WO2007099723A1

WO2007099723A1 - Reader antenna, shelf for placing article provided with antenna, and table for placing article provided with antenna

Info

Publication number: WO2007099723A1
Application number: PCT/JP2007/051006
Authority: WO
Inventors: Seiji Matsumoto
Original assignee: Nippon Sheet Glass Company, Limited
Priority date: 2006-03-02
Filing date: 2007-01-23
Publication date: 2007-09-07

Abstract

A reader antenna arranged on a shelf board is composed of a plurality of antennas having substantially loop-shaped antenna patterns, respectively. First and second antennas among the antennas are provided with a plurality of base line sections and at least one bent section, respectively. Each bent section has a protruding shape provided with a first standing section and a connecting section, which connects the leading end portion of the first standing section with that of a second standing section, and the bent sections are arranged to face each other. The shelf board provided with the antenna can communicate with an electronic tag arranged on an article placed on the shelf board of an article managing shelf, substantially irrespective of the direction of the electronic tag. An article managing shelf using such shelf board having the antenna is also provided.

Description

Specification

Antenna for reader and article mounting shelf with antenna and article mounting table with antenna

Technical field

The “Technical field” of the first, second and third group inventions of the present invention is referred to as “A, technical field of the first group invention”, “B, technical field of the second group invention” and “C. , And the third group technical field of the invention. In the text, “books” refers not only to books but also to newspapers, magazines, materials, documents, other paper-made media, and such paper-made media by binding them with a binder etc. It also includes document binding files, optical recording media such as CDs and DVDs, and magnetic recording media such as video tapes and audio tapes.

A, Technical Field of the First Group Invention

The first group invention of the present invention relates to at least one of various articles (for example, containers such as a bottle having a curved surface shape, irregularly shaped clothing, small jewelry, books, etc.) stored in an article shelf. The present invention relates to an antenna-equipped shelf board which is used for placing one type of article thereon and provided with a reader antenna. The first group invention of the present invention also relates to an article management shelf using such a shelf with an antenna.

B, Technical Field of the Second Group Invention

According to the second group of the present invention, the antenna forming object members such as the shelf board of the article placement shelf and the base plate of the article placement board are respectively provided in the state of being mutually insulated and overlapped with each other. The present invention relates to a reader antenna having first and second antennas. The second group invention of the present invention also relates to an antenna-equipped article placement shelf provided with a shelf board and a base plate provided with such a reader antenna, and an antenna-equipped article placement board. .

C, Field of Invention of Third Group Invention

The third group invention of the present invention has an antenna pattern provided on an antenna formation target member such as a shelf of a bookshelf, other article placing racks, or a bedboard of an article placing stand. Reader antenna. The third group invention of the present invention also relates to an antenna-equipped article placement shelf and an antenna-equipped article placement table provided with a shelf board and a base plate provided with such a reader antenna.

Background art

[0005] The "background art" of the first, second and third group inventions of the present invention is referred to as "A, background art of first group invention", "B, background art of the second group invention" and "C. And “Group 3 Background of the Invention”.

A, Background Art of the First Group Invention

Conventionally, as an article management system, a system in which a bar code is attached to each article, the bar code is scanned by a bar code reader, and the information is stored in a computer to manage the article. Is widespread.

On the other hand, in recent years, as a management system for storage, inventory, sales, etc. of articles such as goods, in place of the conventional system using a tag, shelf label, bar code, etc., a large volume of information is not contacted. An RFID (Radio Frequency Identification) system that can be recorded in the field is being adopted in various fields. The RFID system comprises an electronic tag attached to the article side and a reader / writer equipped with an antenna for communicating with the electronic tag by wireless communication. Such an electronic tag, also referred to as a wireless tag or an IC tag, is a communication circuit that includes an IC chip in which a memory in which information is recorded is incorporated and a small antenna. Then, there are methods described in the following items (1) and (2) as a method for the electronic tag-containing article stored in the article management shelf to communicate with the reader / writer antenna.

(1) A method of communicating with a mobile or handy type reader / writer antenna,

(2) A method of communicating with the reader / writer antenna installed on the upper surface, lower surface or inside of the shelf board of the article management shelf or on the inner side, outside face or inside of the back plate or side board of the article management shelf

[0008] As an example where the number of articles reaches tens of thousands and the efficiency of the management is desired, there is the management of books in the library. In the case of managing such books in the library with the RFID system, usually, the method described in the above (1) is used. Ru. In this case, the worker manages the electronic tag attached to the back cover, front cover or back cover of the book by tracing it with a Nonddy type reader / writer antenna. Therefore, if such collection management is performed by the RFID system, the bookshelf power of the library and the books are taken out one by one and the power of the handy type barcode reader (so-called handy scanner) is applied to the barcodes of the books. Workability is significantly improved compared to collection management with a contact-type barcode system that is designed to scan However, even in the case of non-contact type scanning with a handy type reader / writer antenna, the scanning speed is limited due to its accuracy. Therefore, depending on the volume of collections, the current status is that the closing period required for regular collection and inventory collection is as long as several days.

[0009] On the other hand, it has also been proposed that the collection management at the library is performed by the method described in the above item (2) using the RFID system. Specifically, the direction of the electronic tag attached to the book is uniformly determined, and the reader / writer antenna installed in the bookcase for storing the book communicates with the electronic tag by wireless communication. It is proposed that the article management shelf and article management system power to receive and receive information between the recorded electronic tag and the reader / writer antenna as described below.

[0010] For example, in Patent Document 1, an electronic tag in which information of books is recorded is attached to the back cover of the books, and a substantially rectangular simple loop reader / writer antenna elongated in the frontage direction is used as a bookshelf. The books are installed on the shelf along the outer periphery of the shelf, and the electronic tags of the books placed on the shelf communicate with the reader / writer antenna by an electromagnetic induction method, A system to manage is disclosed.

Patent Document 1: Japanese Patent Application Laid-Open No. 2004-269079

[0011] Patent Document 2 also discloses a system for managing books by communicating between an electronic tag attached to the cover surface of the books and an antenna for a reader / writer. In the case of the book management system disclosed in Patent Document 2, at least two antennas of the plurality of reader / writer antennas that are close to each other are connected to a common surface of the bookcase storage space (ie, They are installed so as to partially overlap each other with their positions shifted by half on the back surface, bottom surface or top surface). And multiple Of the individual reader / writer antennas, the antenna for performing communication operation is sequentially switched to sequentially change the communicable area on the shelf board of the bookcase. Make it possible to communicate with the electronic tags of books in the location! If a management system for books such as that disclosed in Patent Document 2 is used, it becomes unnecessary to scan books with the handy reader / writer antenna one by one. It can make management work much more efficient.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

However, in the case of the book management system disclosed in Patent Documents 1 and 2 above, there are problems as described in the following (A) to (C). The reason why these problems occur is as described in the following items (a) to (c) which are sequentially described next to the description of the respective items (A) to (C).

(A) Communication between the two becomes difficult when the electronic tag attached to the article does not face the reader / writer antenna in a predetermined direction. In the case where it is easy to align the orientation of the electronic tag in a predetermined direction, such as books, the orientation of the electronic tag can be aligned by artificial work, but for articles whose shape or size is not specified. In the case of an attached electronic tag, it is very difficult to unify the orientation of such an electronic tag uniformly for each item.

(a) Since the direction of magnetic lines of force formed by the reader / writer antenna is partially limited, when the antenna surface of the electronic tag is directed in a direction that does not intersect the magnetic lines of force, the reader / writer antenna Communication between the computer and the electronic tag becomes difficult.

(B) In the case of the simple loop type reader / writer antenna provided along the peripheral portion of the shelf board, the back of the shelf board is placed so that the electronic tag is in a direction parallel to the opening direction of the shelf board. When placed in the center of the direction, it is likely that the reader / writer antenna and the electronic tag can not communicate with each other. Further, the electronic tag disposed in the direction perpendicular to the opening direction of the shelf board can not communicate with the reader / writer antenna except when it is arranged at both edge portions in the opening direction of the shelf board.

(b) In any of these cases, among the magnetic lines of force formed by the reader / writer antenna, few magnetic lines of force intersect the electronic tag surface. (c) When a large number of looped antennas are installed as readers / writer antennas sequentially shifted in the opening direction of the shelf plate, an area where communication can not be made to the electronic tags arranged parallel to the opening direction is , May be present in the central part in the depth direction of the shelf board. Also, in the area between adjacent antennas, communication with the electronic tag may not be possible in the entire depth direction of the shelf board. In addition, since it is necessary to sequentially switch and operate a large number of reader / writer antennas, a device for sequentially switching the large number of antennas is required, which increases the cost and increases the cost. Communication time between the reader / writer antenna and the electronic tag increases in order to sequentially switch the

(c) Although the communication status with the electronic tag arranged at right angles to the shelf opening direction of the shelf is improved, among the magnetic lines of force formed by the reader / writer antenna, it is arranged parallel to the shelf opening direction. The number of magnetic lines of force that intersect the electronic tag surface is not improved. In addition, in order to sequentially switch and operate a large number of reader / writer antennas, it is necessary to have a switch for the number of reader / writer antennas.

The first group invention of the present invention was invented to solve the above-mentioned problems, and an electronic tag provided on an article placed on a shelf board of an article management shelf. It is an object of the present invention to provide a shelf board with an antenna capable of communicating with the electronic tag, and an article management shelf using such a shelf board with an antenna, substantially regardless of the orientation. .

B, background art of the second group invention

Conventionally, substantially rectangular articles such as documents, optical disks such as CDs and DVDs, other optical recording media, magnetic tapes such as video tapes and audio tapes, and other magnetic recording media, articles such as bottles, etc. Various articles such as various containers such as cylindrical containers, irregular-shaped clothing, and various collections, such as display shelves, commodity shelves, book shelves, document management shelves such as document management shelves, and reception of libraries It is placed for display, storage, management, etc. on a counter stand such as a counter stand, a table, a desk, etc. Then, it is expected that the above-mentioned various articles will be managed by using the RFID system equipped with the reader / writer antenna for communicating with such electronic tags while attaching the electronic tags to the various articles as mentioned above. ing. Such electronic tags are also called wireless tags or IC tags. The communication circuit includes an IC chip incorporating a memory in which information such as product information is recorded and a small antenna. The reader / writer antenna, which communicates with the electronic tag as described above, has a shelf board surface on which the article is placed, and a back board plane disposed on the back side of the article placement shelf mainly for the purpose of preventing the article from falling off. Often arranged along

As exemplified in Patent Document 3, usually, it is configured as a loop antenna Patent Document 3: Japanese Patent Application Laid-Open No. 2004-140513

On the other hand, an article with an electronic tag placed on a shelf board generally has an irregular shape, and the electronic tag may be attached to the article itself or suspended from the article. Because there are many, the position and orientation of the electronic tag are not constant. In the case of an article having a relatively constant shape, such as a book, a document binding file, or a book such as an optical or magnetic recording medium, the electronic tag may be attached to a certain position as viewed from the article. Is easy. However, even such articles are not necessarily placed on the shelf board in a fixed position or fixed direction. Furthermore, the shelf usually has an area on which a large number of articles can be placed. Therefore, in order for the reader / writer antenna to reliably communicate with the electronic tag whose distance to the shelf surface force and the direction with respect to the shelf surface are not constant over the entire shelf, the reader / writer can It is necessary to devise the configuration of the antenna. Then, if it is attempted to communicate with the electronic tag on the article side with, for example, one reader / writer antenna on the shelf board surface per shelf, the reader / writer antenna may be of any shape. In the case of electronic tags that are in a vertical position relative to the installation plane of the antenna, it is likely to create an incommunicable area.

Therefore, it is conceivable to use a plurality of reader / writer antennas on the shelf board surface per shelf. However, when a plurality of reader / writer antennas are driven by one reader / writer, the value of the current flowing per reader / writer antenna decreases, so the reader / writer antenna communicates with the electronic tag. It may not be possible to obtain the magnetic field necessary for If the output of the reader / writer for driving the reader / writer antenna is increased in order to correct such a defect, a large driving power is required.

Conventionally, as an antenna system for solving the problems as described above, Things have been devised. For example, in Patent Document 2 described above, a plurality of simple loop antennas are provided along the back plate surface (or shelf plate surface) of an article mounting shelf as an antenna for a reader / writer. A reader / writer antenna system is disclosed in which loop antennas are arranged on a common back plate surface (or shelf plate surface) by being shifted by half a pitch at a time, and a plurality of loop antennas are sequentially switched and operated. There is. Further, in Patent Document 4, a plurality of loop antennas provided with a saw-shaped bent portion in a part of them are completely overlapped with each other on a common shelf plate surface as an antenna for a lidar writer. There is disclosed an antenna system for reader / writer provided with feed control means which are arranged in a staggered manner and which feed the plurality of loop antennas so as not to overlap in time. And each of a plurality of loop antennas in this patent document 4 bends so that a concavo-convex part may be formed in an antenna installation side of a shelf board of a shelf of a goods management shelf. It is configured.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

However, the conventional reader / writer antenna systems disclosed in Patent Documents 2 and 4 respectively have problems as described in the following sections (A) to (C). The reason why these problems occur is as described in the following items (a) to (c) which are sequentially described after the description of the respective items (A) to (C).

(A) When arranging a plurality of loop antennas per shelf on a horizontally long shelf board having a certain area, even if the plurality of loop antennas are arranged offset from each other, a large number of loop antennas and a large number of loop antennas are provided. Since individual antenna switching means are required, when managing a plurality of shelves, the number of (or the number of) channels of the reader / writer needs to be increased, resulting in an increase in cost.

(a)-When providing a generally rectangular (generally circular, approximately linear, etc.) loop antenna on a generally long, generally rectangular shelf plate, the incommunicable area is In order to eliminate it, a plurality of antenna groups consisting of at least three loop antennas or an antenna group consisting of at least two loop antennas (in other words, four or more loop antennas) are provided on each shelf. There is a need. In addition, these plural In order to switch the loop antenna of, the number of antenna switching means is required.

(B) When three or more loop antennas are arranged on a common shelf plate surface, the installation position of the antenna switching means affects the performance of the reader / writer antenna system, so the antenna switching means should be located. There is a constraint.

(b) If the length of the connection line connecting the antenna switching means and each of the plurality of loop antennas arranged on the common shelf plate is different for each of the plurality of loop antennas Because the communication performance changes for each of the loop antennas, there is a difference in the communication performance among a plurality of loop antennas disposed on a common shelf surface. In particular, in the case where a large number of loop antennas are provided on the surface of a horizontally long shelf plate, the length of the connection line is set between the loop antenna near the left end of the shelf and the loop antenna near the right end. In order to make the lengths of the connection lines which are not extremely different from each other almost identical to each other, the antenna switching means may be provided at an intermediate position in the opening direction of the back plate disposed on the back side of the article placement shelf. Need to be established.

(C) Even if two loop antennas each having a saw-shaped concavo-convex shape such that each of the loop antennas intersects the electronic tag are arranged such that a part thereof overlaps each other, the antenna pattern shape and those Depending on the form of superposition, there is an incommunicable area of the reader / writer antenna for the electronic tag. Such problems will not be solved even if a feed switching system is used to feed such two loop antennas so as not to overlap in time.

(c) The incommunicable area is generated in the area where the magnetic field passing through the antenna of the electronic tag weakens. As a region where the magnetic field weakens, when the electronic tag is positioned parallel to the direction of the magnetic field, or when the both side force of the electronic tag acts in the same direction in the opposite direction or in the opposite direction. , Mentioned.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

Furthermore, the conventional reader / writer antenna system disclosed in Patent Document 4 has the following problems described in (D) and (E). These issues are The reasons for this are as described in the following sections (d) and (e) which will be described one after the other in the sections (D) and (E) respectively.

(D) A single loop antenna is configured by bending a linear conductor so that an uneven portion is formed in the antenna laying surface of the shelf plate of the product management shelf! In this case, there is an electronic tag that can not communicate with the loop antenna when communicating with a product with an electronic tag placed on the shelf board provided with the above loop antenna. Product management shelves can not be obtained. (Patent Document 4 describes that an unreadable electronic tag could be read by translating 3 cm on a shelf.)

(d) The fact that the inoperable area where the electronic tag of the product with the electronic tag can not communicate with the loop antenna on the shelf board of the product management shelf means that the product exists on the product management shelf in actual product management. Can not be used as inventory management because it is unknown whether or not In addition, it is extremely inconvenient in terms of product placement, and putting the product away from the above-mentioned incommunicable area is not practical.

(E) In the case where a plurality of loop antennas are sequentially switched to complement each other's incommunicable area, an extra time is required for reading by this switching, which also causes a large burden on cost. .

(e) By switching a plurality of loop antennas to complement each other's incommunicable area, there is no incommunicable area throughout the product management shelf, and when configuring the product management shelf ,

(1) Time required for antenna switching itself,

(2) It takes time to read the same product by two or more loop antennas in duplicate.

(3) The time required for the software to count the product information, which has also been read by each of the plurality of loop antennas, on each electronic tag,

And so on. Therefore, in this case, extra communication time is required as compared with the case of reading by a single loop antenna. Also, since the total number of loop antennas that can be controlled by one reader / writer is determined, the number of shelves that can be controlled by one reader / writer is inversely proportional to the number of loop antennas per shelf. One shelf The cost increases as the number of loop antennas increases.

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

The second group invention of the present invention was invented to solve the problems as described above, and substantially independent of the orientation of the electronic tag provided on the article, the electronic tag and the electronic tag. An antenna for a reader capable of communicating with each other, a shelf board provided with such a reader antenna and an article placement shelf with an antenna provided with a base plate, and an article placement stage with the antenna The main purpose is

[0021] C, Background Art of the Third Group Invention

Conventionally, substantially rectangular articles such as documents, optical disks such as CDs and DVDs, other optical recording media, magnetic tapes such as video tapes and audio tapes, and other magnetic recording media, articles such as bottles, etc. Various articles such as various containers such as cylindrical containers, irregular-shaped clothing, and various collections, such as display shelves, commodity shelves, book racks, document placement shelves such as document management shelves, and reception of libraries It is placed for display, storage, management, etc. on a counter stand such as a counter stand, a table, a desk, etc. Then, it is expected that the above-mentioned various articles will be managed by using the RFID system equipped with the reader / writer antenna for communicating with such electronic tags while attaching the electronic tags to the various articles as mentioned above. ing. Such an electronic tag is also referred to as a wireless tag or an IC tag, and also includes communication circuit power including an IC chip in which a memory in which information is recorded is incorporated and a small antenna. As described above, the reader / writer antenna that communicates with the electronic tag is disposed on the shelf board on which the article is placed, or the article placement shelf mainly for the purpose of preventing the article from falling off. Usually, it is configured as a loop antenna, which is often arranged along the back plate surface disposed on the back side.

A bookshelf search system using an antenna system including a reader / writer antenna and an electronic tag as described above is also conventionally known. Such a bookshelf search system has an electronic tag on which information on books is recorded and is affixed to the front cover surface or back cover surface of the books, and a shelf board on which the books are placed and the length direction of the shelf board. And at least one reader / writer antenna disposed to extend along the And, generally, such a shelf board with an antenna has a plurality of upper and lower multi-tiers, etc. It is provided.

As such a bookshelf search system, conventionally, the followings have been specifically devised. For example, in Patent Document 2 described above, a plurality of simple loop antennas are provided on the back plate surface or shelf plate surface of a book rack as a reader / writer antenna along the length direction, and in this case, the plurality of loops A bookshelf search system is disclosed in which the antennas are arranged by being shifted by half pitch in the length direction of the common back plate surface or the common shelf plate surface, and the plurality of loop antennas are sequentially switched and operated. ing. In this case, the electronic tag is attached to the front cover or back cover of the book placed on the shelf board. Also, according to Patent Document 4 described above, a plurality of loop antennas provided with sawtooth-shaped bent portions in part of them do not completely overlap each other on a common shelf plate surface of a book rack as a reader / writer antenna. There is disclosed a bookshelf search system provided with feed control means which is arranged in a staggered manner and which feeds the plurality of loop antennas so as not to overlap in time. Also in this case, the electronic tag is attached to the front cover surface or the back cover surface of the books placed on the shelf board. Further, in Patent Document 5, a bookshelf search in which one simple loop antenna wound in a plurality of turns in a plurality of spirals is provided as a reader / writer antenna on the backboard surface of the bookshelf along its length direction. A system is disclosed. Also in this case, the electronic tag is attached to the front cover or back cover of the books placed on the shelf board.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

Patent document 5: Unexamined-Japanese-Patent No. 2003-252409 gazette

On the other hand, the followings have been proposed as a bookshelf search system for preventing interference between upper and lower shelves in a bookshelf. For example, in Patent Document 6, the shelf board on which the reader / writer antenna is attached is provided with a plurality of or one longitudinal reinforcing member extending along the length direction. A bookshelf search system has been disclosed which reinforces the strength and prevents interference of radio signals between a plurality of reader / writer antennas above and below a plurality of shelf plates in upper and lower stages. In this case, the plurality of interference-preventing longitudinal reinforcing members may be narrow when there are a plurality of them, and one longitudinal reinforcing member may be used. It is widely constructed. In addition, electronic tags are affixed to the front sheet of books placed on the shelf board. Further, in Patent Document 7, the shelf board provided with the reader / writer antenna is provided with a plurality of longitudinal reinforcing members extending along the length direction, whereby the shelf board strength can be increased. Disclosed is a bookshelf search system that reinforces and prevents mutual cancellation of magnetic fields (in other words, magnetic flux) generated by the plurality of reader / writer antennas above and below the shelf plates in the upper and lower stages. It is done. Further, in Patent Document 7 mentioned above, by sticking an iron plate to the side plate of the bookshelf, it is prevented that the magnetic fields generated respectively by the right and left reader / writer antennas of the left and right shelf plates are mutually offset. A bookshelf search system is also disclosed. In any of these cases, the electronic tag is affixed to the spine of the books placed on the shelf board.

Patent Document 6: Japanese Unexamined Patent Application Publication No. 2001-225921

Patent Document 7: Japanese Patent Application Laid-Open No. 2001-270608

However, the conventional bookshelf retrieval systems disclosed in Patent Documents 2 and 4 to 7 respectively have problems as described in the following sections (A) to (F). The reason why these problems occur is as described in the following items (a) to (f) which are sequentially described after the description of the items (A) to (F).

(A) The reader / writer antenna provided for each shelf board in the bookshelf retrieval system described in Patent Documents 6 and 7 has a simple rectangular single loop antenna or a figure of “8” (specifically, The antenna is formed by one loop antenna with a diagonally upward “8” shape, as seen from the diagonal upward force on the front door side. Therefore, when a longitudinal reinforcing member for preventing interference is provided on the shelf board to prevent interference between the upper and lower shelf boards, the electronics of the reader / writer antenna are compared with the case where such a reinforcing member is not provided. Good communication with tags can not be obtained.

(a) In the reader / writer antenna described in Patent Documents 6 and 7, the central portion in the length direction (that is, the opening direction) between a pair of pattern portions which extend in the depth direction and are adjacent to each other, respectively. Can not communicate well with electronic tags attached to the front or back cover of books. And, when the shelf-like plate is provided with the interference-preventing longitudinal auxiliary member, the reader / writer antenna with the electronic tag in the above-mentioned case is provided. The communication status gets worse.

(B) Even if the interference preventing long reinforcing members shown in FIGS. 2, 4 and 5 of the patent document 6 are provided in the bookshelf retrieval system described in the patent documents 2, 4 and 5, between the adjacent shelf boards Interference with each other can not be well prevented, and good communication between the reader / writer antenna and the electronic tag can not be obtained.

(b) When the interference preventing long reinforcing member shown in FIGS. 2 and 4 of Patent Document 6 is provided on a shelf plate on which the reader / writer antenna described in Patent Documents 2, 4 and 5 is formed, It is not possible to prevent mutual interference between the left shelf and the right shelf adjacent to the left and right sides of the plate, respectively. Further, when the interference prevention long reinforcing member shown in FIG. 5 of Patent Document 6 is provided on the shelf plate on which the reader / writer antenna described in Patent Documents 2, 4 and 5 is formed, the reader with the electronic tag The communication performance of the writer antenna is significantly reduced.

(C) Even when the interference prevention plate-like member shown in FIG. 6 of Patent Document 7 is provided in the bookshelf search system described in Patent Documents 2, 4 and 5, good communication with the reader / writer antenna with the electronic tag is achieved. I can not get it.

(c) In the bookshelf retrieval system described in Patent Literatures 2, 4 and 5, when an iron plate is attached to the side plate of the bookshelf as shown in FIG. 6 of Patent Literature 7, it is placed on the shelf near the sideplate. It is not possible to communicate well with the reader / writer antenna on which the electronic tags of the placed books are provided on the shelf board.

(D) In the bookshelf search system described in Patent Documents 2 and 4, the electronic tag can be attached to the front cover surface or the back cover surface of books. However, Patent Documents 2 and 4 do not describe a technique for preventing mutual interference between adjacent shelf boards. And, in this bookshelf retrieval system, since there is a high possibility that interference will occur between adjacent shelf boards in the vertical direction, left-right direction, front-back direction, etc., it is necessary to increase the distance between adjacent shelf boards. Space factor is bad due to this. Furthermore, in the bookshelf retrieval system described in Patent Document 5, since the structure of the electronic tag is complicated, the electronic tag that should be inexpensive is expensive.

(d) For example, as described in paragraph [0065] of Patent Document 2, it is provided on a shelf board. The reader / writer antenna may communicate with both the electronic tags of the books on the shelf and the electronic tags of the books below the shelf. In addition, as described in the paragraph [Patent Document 2], since an antenna switching unit including an extra function and a large rectangular storage box for storing extra various lines are required, Extra space is required and space factor is bad. Further, in the bookshelf retrieval system described in Patent Documents 2 and 4, the reader / writer antenna is a combination of a plurality of loop antennas. Then, when the plurality of loop antennas are placed one on the other on the shelf board, the reader / writer antenna is also configured as a single loop antenna by the mutual coupling of the plurality of loop antennas. Compared to the above, the maximum communicable distance of the reader / writer antenna with the electronic tag decreases. However, near the left and right ends of the shelf plate, a half loop shaped antenna pattern portion (specifically, a substantially U-shaped projecting portion) positionally substantially isolated from other antenna pattern portions. ) Exist respectively. Therefore, the antenna for a lidar writer attached to a certain shelf board is, in particular, near the left and right ends of the shelf board, or the similar half of another shelf board adjacent to the upper and lower and left and right sides. It is easy to cause interference with the looped antenna pattern. For this reason, even if the size of the books is small, it is necessary to provide a sufficient distance between the adjacent shelf boards in the upper and lower directions, and it is also necessary to keep the spacing between the adjacent shelf boards as much as possible. Space factor is bad also in this point. Furthermore, in the bookshelf retrieval system described in Patent Document 3, since it is necessary to use a special structure in which an air core coil and a magnetic core are combined as an electronic tag attached to books, the electronic tag is expensive. It is.

(E) As in the case of the bookshelf search system described in Patent Documents 2 and 5, when the reader / writer antenna is provided on the back plate surface disposed on the back side of the shelf board, the electronic tag of the reader / writer antenna and In order to improve communication performance, it is necessary to attach an electronic tag to the portion of the front or back cover of the books near the front edge of the book.

(e) The size of the books varies, so when trying to align a large number of books on the back plate side of the shelf board, the title part described on the spine of the books is a large number of books Become inconsistent with each other, which makes it difficult for bookshelf users to browse a large number of books (F) In the case of a glass shelf such as a glass display shelf or a product shelf used in a store, etc., as shown in FIG. Space factor is bad because interference between a pair of adjacent shelves can not be prevented.

(f) In the case of the glass shelf as described above, a side plate itself does not exist between a pair of shelf plates adjacent to each other on the left and right !, as shown in FIG. Shielding materials such as iron plates can not be provided on the side plates. For this purpose, since it is necessary to provide a fixed separation distance between a pair of reader / writer antennas adjacent to each other formed on a pair of shelves adjacent to each other, the pair of shelves adjacent to each other is adjacent to each other. It is necessary to take a certain distance apart, and the space factor is bad.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

Patent document 5: Unexamined-Japanese-Patent No. 2003-252409 gazette

Patent Document 7: Japanese Patent Application Laid-Open No. 2001-270608

The third group invention of the present invention was invented to solve such problems focusing on the problems as described above, and is a front cover surface or a back cover surface of books, etc. The reader / writer antenna provided on the antenna formation target member in order to communicate with the electronic tag attached to the electronic tag communicates well with the electronic tag described above, which generates unnecessary space for the article storage space for storing articles such as books. Its main purpose is to make it possible.

Disclosure of the invention

[0027] "Disclosure of the invention" for the first, second and third group inventions of the present invention is referred to as "disclosure of the invention for the first group invention", and "B and invention of the second group invention". It is divided into items in “disclosure” and “C, disclosure of invention regarding third group invention” and described below.

[0028] A, Disclosure of Invention for First Group Invention The first group inventions of the present invention are described in claims 1 to 28. And, according to the first aspect, according to the first aspect, the first group invention is used for an article management shelf provided with an article stored on the article shelf and provided with a reader antenna. Antenna shelf with And, the above-mentioned reader antenna comprises a plurality of antenna powers. The antenna pattern of the first antenna of the plurality of antennas may be a first pattern extending in the direction of the front of the first plate extending substantially in the direction of the front of the shelf plate. And a second pattern portion extending in the substantially depth direction on the side of the second edge portion extending in the substantially depth direction of the shelf plate; and extending substantially in the direction of the front opening of the shelf plate; A third pattern portion extending substantially in the front direction, and a third pattern portion opposite to the first edge portion; and extending substantially in the depth direction of the shelf plate; The fourth edge portion opposite to the second edge portion is configured to be sequentially connected to the fourth pattern portion extending in the substantially depth direction. The antenna pattern of the second antenna of the plurality of antennas includes: a first pattern portion extending substantially in the direction of the front of the third edge; and a second pattern of the second edge A second pattern portion extending in the substantially depth direction on the side, a third pattern portion extending in the substantially front direction on the side of the first edge, and a side of the fourth edge The fourth pattern portion extending in the substantially depth direction is configured by being sequentially connected. In addition, the first and Z or third pattern portions of the first antenna and the first and Z or third pattern portions of the second antenna are substantially in the direction of the frontage. A plurality of extending baseline portions and at least one bent portion connecting the plurality of baseline portions to each other are provided. Furthermore, each of the bent portions has a convex shape including first and second rising portions and a connecting portion connecting the tips of the first and second rising portions to each other.

In the first aspect of the first group invention of the present invention, when the reader antenna provided on the shelf plate is divided into unit areas by virtual unit area dividing lines extending substantially in the depth direction. In each of the unit areas, the first pattern portion of the first antenna and the third pattern portion of the second antenna are provided. One of the forces extending substantially in the direction of the front along the first edge of the shelf plate, and the other of the plurality of base line portions extending in the direction of the front. And the at least one bending portion connecting the plurality of base line portions to each other, and the first pattern portion of the first antenna in each of the unit regions. And one of the first pattern portion of the first antenna and the third pattern portion of the second antenna is the first pattern portion of the first antenna. Pattern portion force The plurality of pattern portions extend substantially in the direction of the front along the third edge of the shelf plate, and extend in the direction of the front with the third pattern portion force of the first antenna. Baselines And the at least one bending portion connecting the plurality of base line portions to each other, and the first pattern portion and the first pattern portion of the first antenna in each of the unit regions. When any one of the second pattern portion and the third pattern portion of the second antenna is the third pattern portion of the second antenna, the third pattern portion force of the first antenna The plurality of bases extending substantially in the direction of the front along substantially the third edge of the plate, and the first pattern portion of the second antenna extends in the direction of the front. Preferably, the line portion and the at least one bent portion connecting the plurality of base line portions to each other are provided.

According to a second aspect of the present invention, the first group invention of the present invention is used for an article management shelf on which articles stored in an article shelf are used to be placed thereon and provided with a reader antenna. Antenna shelf with The reader antenna also has a plurality of antenna powers. The antenna pattern of the first antenna of the plurality of antennas may extend in the direction of the foremost opening substantially along the first edge extending in the direction of the foremost opening of the shelf plate. The first pattern portion, the second edge portion extending substantially in the depth direction of the shelf plate, the second pattern portion extending substantially in the depth direction, and the substantially front surface direction of the shelf plate A third pattern portion extending in the direction opposite to the first edge and extending in the direction of the front, and a third pattern extending on the side of the third edge and extending in the direction towards the back of the shelf plate. And the side of the fourth edge opposite to the second edge is approximately the depth A fourth pattern portion extending in the front direction is configured by being sequentially connected. The antenna pattern of the second antenna of the plurality of antennas may include: a first pattern portion extending substantially along the third edge; and the second edge. A second pattern portion extending substantially in the depth direction, a third pattern portion extending substantially in the direction of the first edge, and a side of the fourth edge And the fourth pattern portion extending substantially in the depth direction are sequentially connected. The third pattern portion of the first antenna and the third pattern portion of the second antenna may include a plurality of base line portions extending substantially in the direction of the frontage, and a plurality of the plurality of baseline portions. And at least one bend connecting the baseline sections to each other. Further, each of the bent portions is provided with a convex shape force which is provided with a first and a second rising portion and a connecting portion connecting the tips of the first and the second rising portions to each other. .

[0031] In the second aspect of the first group invention of the present invention, the baseline portion of the third pattern portion of the first antenna, and the third pattern portion of the second antenna Between the first pattern portion of the second antenna and a virtual shelf board center line extending in the direction of the front of the shelf board. Each of the connecting portion of the bent portion of the third pattern portion of the first antenna and the base line portion of the third pattern portion of the second antenna extends. It is preferable to extend between the first pattern portion of the first antenna and the shelf centerline.

According to the first group invention of the present invention, according to the first and second aspects, the direction of the electronic tag provided on the article placed on the shelf is specified with respect to the shelf. Since each of the plurality of antennas functions to mutually compensate for the incommunicable area on the shelf board, the reader antenna for the electronic tag provided on the article placed on the shelf board. Communication by wireless communication can be performed well. Therefore, since it is not necessary to align the direction of the electronic tag provided for the article placed on the shelf with respect to the shelf board, it is possible to manage the article by the article management shelf reliably and easily. For example, in a library used by a large number of people, books are not always placed facing the front, and the size of the books Although the position of the electronic tag will vary depending on the situation, it is possible to easily manage the books without manually aligning the books. In addition, since the reader antenna can communicate favorably with the electronic tag by wireless communication substantially independently of the direction of the electronic tag with respect to the shelf board, the first group invention of the present invention It is also suitable to be applied to a shelf that manages articles for which it is difficult to unify the orientation of the electronic tag provided on the shelf, such as a chemical storage shelf and an article management shelf such as a product showcase. There is.

[0033] In the first and second aspects of the first group invention of the present invention, the convex portion bending force of the second antenna as viewed in plan shows the convex of the first antenna. By being disposed in a state of being displaced substantially in the front direction with respect to the bending portion of the shape, a portion overlapping with the bending portion of the convex shape of the first antenna is provided. Is preferred. In this case, the width of the overlapping portion in the front direction is basically a value obtained by dividing the width of the bent portion of the convex shape by the number of antennas of the plurality of antennas (in other words, the plurality). There may be a variation, such as ± 25% as described later.

In the first and second aspects of the first group invention of the present invention, the second pattern portion of the first antenna and the second pattern portion of the second antenna are provided. One of the forces extends substantially in the depth direction substantially along the second edge of the shelf, and the other is opposite to the second edge of the one side. One of the fourth pattern portion of the first antenna and the fourth pattern portion of the second antenna, which extends in the substantially depth direction, is either the above or the other of the shelf plate. It is preferable to extend in the substantially depth direction substantially along the fourth edge and to extend in the substantially depth direction opposite to the other one of the fourth edges. . Further, in the first and second aspects of the first group invention of the present invention, each of the plurality of antennas constituting the reader antenna has an intersecting portion in plan view. Preferably not. In the first and second aspects of the present invention, any one of the plurality of antennas constituting the reader antenna and another one of the plurality of antennas may be used. Mutual spacing force of 70mm or less in the thickness direction of the shelf board with one antenna Is preferred. In the first and second aspects of the first group invention of the present invention, it is preferable that the main component of the shelf board is a glass plate. In the first and second aspects of the first group invention of the present invention, each of at least antenna patterns of the plurality of antennas may have a substantially circular or other cross-sectional shape. It may be constituted by a wire conductor (in other words, an existing linear conductor attached to a shelf). And if it is comprised in this way, since the width of the above-mentioned antenna pattern can be made small, when an article shelf is constituted by translucent material power, such as a glass plate, the translucency of an article shelf will be said above. The reduction due to the antenna pattern can be substantially prevented. In this case, the cross-sectional diameter of the wire conductor is generally preferably 1. O mm or less from the viewpoint of practicality, and is preferably 0.2 mm or more.

Furthermore, in the first and second aspects of the first group invention of the present invention, the plurality of antennas constituting the reader antenna are configured to operate sequentially. Is preferred. According to this configuration, mutual interference between the plurality of antennas can be effectively prevented, so that magnetic lines of force formed by at least one of the plurality of antennas can be directed in any direction on the shelf board. It is possible to effectively achieve crossing of the electronic tag facing the Furthermore, in the first and second aspects of the present invention, it is preferable that the reader antenna is a reader / writer antenna which also serves as a reader / writer antenna.

[0036] According to a third aspect of the first group of the present invention, according to the third aspect, an antenna-equipped shelf board according to the first aspect and an antenna-equipped shelf board according to the second aspect are selected. The present invention relates to an article management shelf characterized by comprising at least one shelf with an antenna as a shelf.

B, Disclosure of Invention Regarding Second Group Invention

The second group inventions of the present invention are described in claims 29 to 70. And, according to the first aspect of the second group invention, the object forming objects such as a shelf board of an article placement shelf and a bedboard of an article placement table in a state where they are mutually insulated and overlapped with each other Provided with first and second antennas respectively formed on the member Is related to the reader antenna. Then, when power is supplied to the first antenna, an induced current generated in the second antenna in response to a magnetic field generated by the first antenna is an effective antenna pattern element of the second antenna (the first antenna). Of the first and second antennas, and the shape of the antenna pattern of the first antenna and the second antenna so that the second antenna flows in a common current direction in a longitudinal overlapping portion with an antenna, a longitudinal proximity portion, etc.). The mutual arrangement of the first and second antennas is selected respectively. In the text, “effective antenna pattern element” means, among the antenna patterns of the first and second antennas, a longitudinal pattern portion which effectively functions to generate a magnetic field. According to the first aspect of the second group invention, substantially avoiding the induced current generated in the second antenna by the feeding of the first antenna from being canceled in the second antenna. The magnetic fields generated by each of the first and second antennas can be mutually reinforced. For this reason, a reader capable of communicating with the electronic tag substantially independently of the direction of the electronic tag with a relatively small number of antennas (ie, two) and relatively low driving power. Antenna can be provided.

In the first aspect of the second group invention of the present invention, according to the first aspect, the antenna pattern of the first antenna and the antenna pattern of the second antenna substantially correspond to each other. The antenna pattern of the first antenna and the antenna pattern of the second antenna have at least a first direction of the effective antenna pattern elements. (E.g.

, A shelf plate, a base plate, etc.) (generally speaking, a first effective antenna extending along the first direction). Or both the first effective antenna element and a second effective antenna element extending generally along a second direction orthogonal to the first direction. So long as they are stacked one on top of the other! /, They are placed offset from one another! In this case, even when power is supplied to any one of the first and second antennas, the second direction orthogonal to the first direction and the antenna formation surface of the antenna formation target member For example, in both the shelf board, the base board etc. The first and second antennas are respectively configured such that the first magnetic field components generated in parallel increase and decrease at approximately constant intervals in the second direction, and the antenna of the first antenna is configured. A region weakening in the second direction of the first magnetic field component of the pattern and a region weakening in the second direction of the first magnetic field component of the antenna pattern of the second antenna Preferably, the first antenna and the second antenna are disposed such that the first and second antennas alternately occur. Furthermore, in this case, it is also preferable that the first magnetic field component is substantially uniform in the first direction. According to the first aspect of the first aspect, the incommunicable area extending along the first direction of each of the first and second antennas can be reduced with a relatively small number of antennas. , Can compensate each other. For this reason, it is possible to provide a reader antenna capable of better communication with the electronic tag substantially independently of the orientation of the electronic tag. In the second group invention of the present invention, the length force in the second direction of the antenna formation target member is larger than the length in the first direction of the antenna formation target member, or It is preferred that they be substantially identical. Also, in the text,

The phrase “extends roughly” means within 15%, preferably within 10%, and more preferably 5

It means that it may extend with an inclination angle within%. Furthermore, in the text, "approximately" preferably means "approximately".

Furthermore, in the first aspect of the second group invention of the present invention, according to the second aspect, when either one of the first and second antennas is fed, The first and second antennas are configured such that second magnetic field components respectively generated parallel to both the antenna formation surface of the antenna formation target member and the first direction increase or decrease in the first direction. A region which is respectively formed and weakens in the first direction of the second magnetic field component of the antenna pattern of the first antenna, and the second magnetic field component of the antenna pattern of the second antenna. It is also preferable that the first antenna and the second antenna be arranged such that regions weakening in the first direction alternately occur. In this case, it is also preferable that the second magnetic field component be approximately uniform in the second direction. According to the second aspect of the first aspect, each of the first and second antennas extends along the approximately second direction. The extended incommunicable areas can be compensated for with a relatively small number of antennas. For this reason, it is possible to provide a reader antenna capable of better communication with the electronic tag substantially independently of the orientation of the electronic tag.

According to a second aspect of the present invention, in the second group invention of the present invention, the first and second members respectively formed on the antenna formation target members in a state of being mutually insulated and overlapped with each other. The antenna according to claim 1, wherein each of the first and second antennas relates to a reader antenna comprising at least one substantially loop shaped antenna pattern. And, each of at least one of the substantially loop shaped antenna patterns of the first antenna and at least one of the substantially loop shaped antenna patterns of the second antenna is the target of the antenna formation. A first pattern portion provided on a first side in a first direction of the member (for example, a width direction which is a depth direction of a shelf plate, a base plate, etc.), and the first direction of the antenna formation target member And a second pattern portion provided on the first side in a second direction (for example, a longitudinal direction which is a frontage of a shelf plate, a base plate, etc.) orthogonal to the A third pattern portion provided on the second side opposite to the first side in the first direction, and the first side in the second direction of the antenna formation target member Provided on the opposite second side And and a fourth pattern portion. In addition, at least one of the first to fourth pattern portions of the first antenna and the at least one of the first to fourth pattern portions of the second antenna may be used. A plurality of baseline portions in which at least one corresponding approximately in the same direction, roughly facing, or the like in the pattern portion is arranged intermittently with each other, and the plurality of baseline portions And at least one of the bends provided between the first and second antennas to substantially correspond to each other in substantially the same direction, such as facing each other. Each has its own. Furthermore, each of the bent portions is formed in a substantially convex shape including the first and second rising portions, and the first rising portion or the second rising portion of the first antenna is the same. It is disposed between the corresponding first rising portion of the second antenna and the corresponding second rising portion.

[0041] In the second aspect of the second group invention of the present invention, according to the first aspect, For example, each of the bent portions includes a connecting portion connecting the first rising portion and the second rising portion to configure each of the bent portions in the substantially convex shape. Preferably, each of the connecting portions extends along substantially the second direction. In addition, each of the first and second rising portions may extend substantially along the first direction. Furthermore, some or all of the first and second rising portions extend at an angle to the first direction, and the angle of inclination is 15 ° to 45 ° (preferably, 20 °). Preferably within the range of 25 ° to 35 °).

Further, according to the second aspect of the second group invention of the present invention, according to the second aspect, the force of each of the first and second antennas is set as the substantially loop-shaped antenna pattern. The first pattern portion of the substantially loop-shaped antenna pattern of each of the first and second antennas respectively extends along the second direction, and the first and second antennas are provided. Each of the second and fourth pattern portions of the substantially loop-shaped antenna pattern of each of the second antennas extends respectively generally along the first direction, and the first and second The third pattern partial force of each of the substantially loop shaped antenna patterns of each of the antennas at least a plurality of baseline portions provided between the plurality of baseline portions and the plurality of baseline portions. The first bending portion and the second bending portion respectively have one bending portion so as to substantially correspond to each other in the state of substantially the same orientation, and the like. Preferably, it is configured to have a substantially convex shape so as to protrude to the side of the pattern portion of.

[0043] In the second aspect of the second group invention of the present invention, according to the third aspect, the force of each of the first and second antennas is set as the substantially loop-shaped antenna pattern. And the first pattern portion of the substantially loop shaped antenna pattern of the first antenna extends substantially along the second direction, and the first and second antennas are provided. Each of the second and fourth pattern portions of each of the substantially loop shaped antenna patterns of each of the plurality of substantially loop shaped antenna patterns respectively extending along the first direction; Above of the antenna pattern of the shape A pattern portion force of 3 extends along the second direction substantially, and the third pattern portion of the first antenna and the first pattern portion of the second antenna, respectively. The plurality of base line portions and at least one bent portion provided between the plurality of base line portions are substantially facing each other between the first antenna and the second antenna. In order to correspond roughly to each other in a state such as, each of the bent portions of the first antenna projects in a substantially convex shape so as to project toward the first pattern portion of the first antenna. It is also preferable that the bending portion be configured to have a substantially convex shape so as to protrude toward the third pattern portion of the second antenna.

[0044] In the second aspect of the second group invention of the present invention, according to the fourth aspect, the first pattern portion of the first antenna, and the first antenna of the first antenna An average mutual distance between the connecting portion and the base line portion of the second antenna, the third pattern portion of the second antenna, and the connecting portion of the second antenna; The mutual spacing between the first antenna and the base line portion is equal to an average of the first pattern portion of the first antenna and the third pattern portion of the second antenna. The mutual spacing can be in the range of 1Z40 to 1Z10 (preferably, 1Z30 to 1Z15). As used herein, the “interspacing” between one longitudinal pattern portion and the other longitudinal pattern portion means the mutual distance between the lines passing through the centers of the one and the other longitudinal pattern portions in the width direction. Means an interval of

In the second aspect of the second group invention of the present invention, according to the fifth aspect, the force of each of the first and second antennas is substantially along the first direction. The antenna pattern force of the first substantially loop shape is provided on the first side in the first direction, and the first and second substantially loop shaped antenna patterns are sequentially arranged. Second substantially loop-shaped antenna pattern force Each of the first substantially loop-shaped antenna patterns of the first and second antennas disposed on the second side in the first direction The first pattern portion of the second and the third pattern portion of each of the second substantially loop shaped antenna patterns respectively extend approximately along the first direction, First and 2 And each of the second and fourth pattern portions of each of the first and second substantially loop shaped antenna patterns of each of the antennas extends approximately along the second direction, respectively; The third pattern portion of each of the first substantially loop shaped antenna patterns of each of the first and second antennas and the first pattern of each of the second substantially loop shaped antenna patterns The plurality of base line portions and at least one bend portion provided between the plurality of base line portions are approximately divided by the first antenna and the second antenna. The first and second substantially loop-shaped antenna patterns of the first and second antennas respectively provided so as to substantially correspond to each other in the same orientation or the like. Each of the bent portions is on the side of the first antenna portion of the first substantially loop shaped antenna pattern and on the side of the third antenna portion of the second substantially loop shaped antenna pattern; It is also preferable to be configured in a substantially convex shape so as to protrude respectively.

Furthermore, according to the sixth aspect of the second aspect of the second group invention of the present invention, according to the sixth aspect, the plurality of bases arranged intermittently from each other according to the first antenna force. In the second direction with respect to the second antenna, only in the range of 0.25 to 0.65 (preferably, 0.3 to 0.5) of the average length per line portion It can be offset. Further, according to another embodiment, the first antenna has an average length of 0.20 to 0 per one of the plurality of baseline portions intermittently arranged to each other. It is also possible to deviate in the second direction with respect to the second antenna by a range of 45 or a range of 0.55-0.5. In any of these cases, the first antenna may be offset from the second antenna only in the second direction, but may be offset in the first direction. In this case, the average length per one of the plurality of baseline portions arranged intermittently between the first antenna force and the first antenna force is preferably 0.80 to 0.85 (preferably, 0). The first antenna may be shifted in the first direction with respect to the second antenna by the range of 1 to 0.7, more preferably, 0.15 to 0.6).

According to the second aspect of the second group invention of the present invention (in particular, the first to sixth aspects), the first and second antennas are arranged in substantially the first direction. Extend along The unreliable areas can be compensated for each other with a relatively small number of antennas and a relatively simple antenna pattern. For this reason, it is possible to provide a reader antenna capable of good communication with the electronic tag and being relatively simple in configuration, substantially regardless of the orientation of the electronic tag.

In the first and second aspects of the second group invention of the present invention, according to the first aspect, only any one of the first and second antennas is used. Can be configured to feed power. In the first aspect of the first and second aspects, a capacitor for a resonant circuit is connected between a pair of terminal portions of the other of the first and second antennas. Can be. According to the first aspect in the first and second aspects, power is supplied to only one of the first and second antennas, and the magnetic field generated by the one of the first and second antennas is used. An induced current is generated in the other antenna. For this reason, since the induction current generates a magnetic field so as to compensate the magnetic field generated by the one antenna, antenna switching means for alternately feeding the first and second antennas is not necessary. Also, the communication speed can be shortened. Furthermore, since the number of loop antennas required to be fed can be reduced, power consumption can be reduced, and the number of reader / writers relative to the number of reader antennas can also be reduced. The cost reduction effect can be increased.

Further, in the first and second aspects of the second group invention of the present invention, according to the second aspect, the first and second antennas are configured to be alternately fed. You can also As in the first aspect in the first and second aspects, it is generated by an induced current generated in one of the first and second antennas when power is supplied to the other antenna. The magnetic field is somewhat smaller than the magnetic field generated by the one antenna. However, according to the second aspect in the first and second aspects, by alternately feeding the first and second antennas, both of the antenna power is also generated, and the overall magnetic field strength is uniform. As a result, it is possible to secure a stable communication state between the electronic tag and the reader antenna only by providing one antenna switching means. Also, in the first and second aspects described above, Preferably, the reader antenna is configured as a reader / writer antenna. In this case, since the writing and reading of the electronic tag can be performed with the common antenna, the entire configuration of the reader / writer can be simplified.

In the first and second aspects of the second group invention of the present invention, according to the third aspect, the antenna formation target member is a shelf board of an article placement shelf or a table of an article placement table. It is also preferred that the plate be a transparent non-conductive material of the shelf or the base plate. In addition, it is also preferable that a wire conductor with a force cross-sectional diameter of 0.5 mm or less of at least an antenna pattern (more preferably, an antenna pattern and a pair of terminal portions) of the first and second antennas is also configured. In this case, it is also preferable that the cross-sectional diameter of the wire is generally not less than 0.20 mm in view of practicality. According to the third aspect of the first and second aspects, even when the shelf board of the article placement shelf provided with a plurality of shelf boards is used as the antenna formation target member, one or more of them may be used. Because it is easy to view the articles on another shelf through one shelf board, handling of the articles on this separate shelf is easy, and the lighting equipment for the article placement shelf is omitted. It can be small. Furthermore, in the first and second aspects, it is preferable that the first and second antennas be provided between a pair of glass plates laminated to each other with an insulating layer interposed therebetween. . According to this structure, since the first and second antennas are provided between a pair of glass plates each having excellent weather resistance and chemical resistance, the reader antenna can be used in various environments. Can also be effectively protected. For this reason, since the weather resistance and chemical resistance of the reader antenna are improved, there is no risk of damage even if the reader antenna is provided on a medicine rack or the like. In the first and second aspects, each of the terminal portion of the first antenna and the terminal portion of the second antenna is the antenna formation target member (for example, a shelf plate or a base plate). It is provided at any one edge selected from one and the other edge in the length direction (for example, frontage direction) and the edge on the back side in the width direction (for example, depth direction) Is also preferred. With this configuration, it is easy to combine the terminal parts for feeding the first and second antennas into one place. You can reduce the limitations of

Further, according to a third aspect of the second group invention of the present invention, the shelf board on which the reader antenna according to the first and second aspects is formed is provided as the antenna formation target member. The invention also relates to an article placement shelf with an antenna. Then, according to the fourth aspect of the second group invention of the present invention, the antenna for reader according to the first and second aspects is formed, and the base plate is provided as the antenna formation target member. The invention also relates to an article mounting table with an antenna. According to the third and fourth aspects, the direction of the electronic tag provided on the article placed on the shelf plate of the article placement shelf and the bed plate of the article placement table is substantially irrelevant. An article placement shelf and an article placement table provided with a reader antenna capable of communicating with the electronic tag can be provided.

[0052] C, Disclosure of Invention Regarding Third Group Invention

The third group inventions of the present invention are described in claims 71 to 93. And, according to the first aspect of the third group invention, in the reader / writer antenna having an antenna pattern formed on the antenna formation target member, the conductive porous sheet member is planar The present invention relates to a reader antenna, which is provided on the antenna formation target member so as to extend in a loop shape substantially along the outer periphery of the antenna pattern as seen in FIG. According to the first aspect of the third group invention, the magnetic field (in other words, the magnetic flux) generated by a predetermined antenna component of the antenna pattern of the reader antenna is made conductive in a loop shape. Of the antenna formation target member such as a shelf board (specifically, a portion other than the upper portion of the antenna formation target member over a predetermined distance or the upper side of the antenna formation target member). Since it is possible to weaken only to a considerable extent, there is little possibility of causing interference between the above reader antenna and another reader antenna adjacent to it, and it is possible to store an article. There is no waste of space. However, since the conductive sheet-like member configured in a loop shape is porous, magnetic fields (in other words, magnetic flux) generated by the antenna pattern of the reader antenna are used for mutual communication with the electronic tag. Function effectively. Therefore, despite its relatively simple construction, it is possible for the electronic tag to have a particularly complex structure. The da antenna can be communicated well with the electronic tag.

According to the first aspect of the third group invention of the present invention, according to the first aspect, the porous sheet member has a mesh structure in which conductive filaments are braided in a mesh shape. It can be built. The ratio of the size of the central opening to the size of the porous sheet-like member including the central opening is preferably in the range of 20 to 80% (more preferably 30 to 70%). Further, the pitch of the small openings of the porous sheet member is preferably in the range of 50 to 2,000 m (more preferably 100 to 1,200 m). Further, the area per one of the plurality of small holes of the porous sheet-like member is preferably 4,000 to 1,800,000 / zm ² (more preferably 8,000 to 8,000,000) It is the range of / zm ² ). Further, the open area ratio of the porous sheet-like member with respect to the large number of small holes formed therein is preferably in the range of 70 to 95% (more preferably 80 to 92%). .

According to a second aspect of the first aspect of the third group invention of the present invention, according to the second aspect, any one of the ends of the ends of the antenna pattern is overlapped with (for example, In one of the end portions, a substantially U-shaped protruding portion near at least one end portion of the V-shaped conductive member is applied to the conductive and porous second sheet-like member force. It is preferable that at least a portion corresponding to any one end is provided. According to the second aspect of the first aspect, the magnetic field (in other words, the magnetic flux) generated by a predetermined antenna component of the antenna pattern of the reader antenna can be a second porous sheet. It is possible to further weaken only to the outside of the antenna formation target member such as the shelf board by means of the ring-shaped member, so that it is possible to set between the above-mentioned reader antenna and another reader antenna adjacent thereto. The possibility of causing interference is further reduced.

In the first aspect of the third group invention of the present invention, according to the third aspect, the outer periphery of the porous sheet member is viewed in plan, and the reader / writer is The porous sheet-like member extends along the outer periphery or the outer side of the antenna pattern of the antenna, and the inner periphery of the porous sheet member is described in the following items (a) to (d) in plan view. It is preferable to satisfy the following conditions.

(a) the antenna formation target member of the inner circumference of the porous sheet member A pattern portion in which the inner circumference of the first side in the first direction (for example, the depth direction) extends substantially along the second direction (for example, the frontage direction) orthogonal to the first direction. Extending the outermost periphery of the first side in the first direction of the! /, And extending substantially along the inner end of the pattern portion or the inner side thereof;

(b) Of the inner periphery of the porous sheet member, the inner periphery of the second side opposite to the first side in the first direction of the antenna formation target member is the second In the first direction in the first direction among the pattern portions extending substantially along the direction of the second side, or the inner end of the pattern portion extending substantially at the inner side thereof. Extending along,

(c) The inner periphery of the first side in the second direction of the antenna formation target member of the inner peripheries of the porous sheet member extends substantially along the first direction. Extending the outermost periphery of the first side in the second direction among the pattern portions, and extending substantially along the outer end of the pattern portion or the outer side thereof;

(d) Of the inner periphery of the porous sheet member, the inner periphery of the second side opposite to the first side in the second direction of the antenna formation target member is the first inner periphery of the porous sheet member. It extends substantially along the outer edge or the outer side of the pattern portion extending on the second side in the second direction among the pattern portions extending substantially along the direction of Being present

In the third aspect of the first aspect of the third group invention of the present invention, the porous sheet-like member is viewed in plan view in the second direction of the antenna formation target member Among the substantially extending pattern portions, the portions substantially overlap with the pattern portions extending near the first end and the second end in the first direction, respectively. You may In addition, the porous sheet-like member extends substantially along the second direction in plan view, and substantially overlaps all pattern portions. Furthermore, the porous sheet-like member extends substantially along the first direction in plan view, and substantially does not overlap with the misaligned pattern portion.

[0057] In the first aspect of the third group invention of the present invention, in the fourth aspect, In this case, it is preferable that the reader antenna includes first and second loop antennas respectively provided on the antenna formation target members in a state of being insulated from each other and overlapping each other. In this case, each of the first and second loop antennas has a substantially loop-shaped antenna pattern, and the substantially loop-shaped antenna pattern of the first loop antenna and the second loop antenna Each of the substantially loop-shaped antenna patterns includes a first pattern portion provided on a first side in a first direction (for example, a depth direction) of the antenna formation target member, and the antenna formation target member. The second pattern portion provided on the first side in a second direction (for example, the frontage direction) orthogonal to the first direction, and the first pattern direction member in the first direction. A third pattern portion provided on a second side opposite to the first side, and a second side opposite to the first side in the second direction of the antenna formation target member The fourth pattern portion provided on the side, and the third pattern portion of the first loop antenna and the first pattern portion of the second loop antenna are intermittent with each other Each of the plurality of baseline portions disposed in a row and at least one bend portion provided between the plurality of baseline portions, each of the bend portions being a first The first rising portion or the second rising portion of the first loop antenna corresponds to that of the second loop antenna. The first rising portion or the second rising portion of the first loop antenna is configured in a substantially convex shape including a rising portion and a second rising portion. The first loop antenna is offset with respect to the second loop antenna in the second direction so as to be disposed between the first rising portion and the corresponding second rising portion. Preferred . According to this structure, the incommunicable area extending along substantially the first direction of each of the first and second antennas can be formed with a relatively small number of antennas and a relatively simple antenna pattern shape. Thus, they can make up for each other. To this end, it is possible to provide a reader antenna capable of good communication with electronic tags of various orientations.

In the fourth aspect of the first aspect of the third group invention of the present invention, preferably, the first loop antenna is preferably an average per one of the plurality of baseline portions. Only the range of 0.25 to 0. 75 (more preferably 0.3 to 0. 6) of the length, The second loop antenna is offset in the second direction. Preferably, the first loop antenna is one of the first and second rising portions of the first loop antenna and one of the first and second rising portions of the second loop antenna. Offset in the first direction with respect to the second loop antenna by a range of 0.50 to 0.5 (more preferably, 0.1 to 0.4) of the average length per contact ! /.

Furthermore, in the first aspect of the third group invention of the present invention, according to the fifth aspect, it is preferable that the reader antenna be configured as a reader / writer antenna. According to the fifth aspect of the first aspect, since writing to the electronic tag and reading of the electronic tag force can be performed with a common antenna, the entire configuration of the reader / writer is simplified. be able to.

[0060] In the first aspect of the third group invention of the present invention, according to the sixth aspect, the antenna formation target member is a shelf board of an article placing shelf or a table of an article placing table. A plate, and the main component of the shelf board or the base plate is a transparent non-conductive material, and a wire conductor having a cross-sectional diameter of at least 0.5 mm of at least the antenna pattern of the first and second antennas. Forces can also be configured. Also, the first and second loop antennas can be provided between a pair of glass plates stacked on each other with an insulating layer interposed therebetween. In this case, since the first and second loop antennas are provided between a pair of glass plates each having excellent weather resistance and chemical resistance, the reader antenna can be effectively used even in various environments. Can be protected. As a result, the weather resistance and chemical resistance of the reader antenna are improved. Therefore, even if the reader antenna is provided on a medicine rack or the like, there is no risk of damage.

Furthermore, according to a second aspect of the third group invention of the present invention, the shelf board on which the reader antenna according to the first aspect is formed is provided as the antenna formation target member. The present invention relates to an article mounting shelf with an antenna characterized by In this case, it is preferable that the article mounting shelf with an antenna is a bookshelf with an antenna. And, according to the third aspect of the present invention, according to the third group of the present invention, the base plate for the reader according to the first aspect is formed, and the base plate is provided as the antenna formation target member, The present invention relates to an article mounting table with an antenna characterized by According to these second and third aspects For example, there is little possibility of causing interference between the reader antenna and another reader antenna adjacent to it, and no wasted space is created. Also, the reader antenna can be made relatively simple. Although it is possible to do so, the article placement shelf and article placement table such as a bookshelf provided with a reader antenna that can communicate well with the electronic tag without particularly making the electronic tag into a complicated structure. Can be provided.

Brief description of the drawings

FIG. 1 is a perspective view of the entire article placement shelf in the first embodiment in which the first group invention of the present invention is applied to an article placement shelf.

[FIG. 2A] A plan view showing only the first antenna of the two antennas constituting the reader / writer antenna of the shelf board of FIG.

[FIG. 2B] A plan view showing only the second antenna of the two antennas constituting the reader / writer antenna of the shelf board of FIG. 1.

[FIG. 2C] FIG. 2C is a plan view of the shelf board of FIG. 1 showing both of the two antennas that constitute the reader / writer antenna.

[FIG. 3] It is an enlarged longitudinal cross-sectional view of a part of the shelf board of FIG. 2A.

FIG. 4 is an enlarged plan view of the electronic tag of FIG. 1;

[FIG. 5A] A plan view of the shelf board of FIG. 2C in a state in which an incommunicable area in the first arrangement state of the electronic tag is added.

[FIG. 5B] A plan view of the shelf board of FIG. 2C in a state in which an incommunicable area in the second arrangement state of the electronic tag is added.

[FIG. 5C] A plan view of the shelf board of FIG. 2C in a state in which an incommunicable area in the third arrangement state of the electronic tags is added.

[FIG. 6A] A plan view similar to FIG. 5B of the shelf board in the first comparative example for explaining the first group invention of the present invention.

[FIG. 6B] A plan view of a shelf board in a second comparative example for explaining the first group invention of the present invention in a state similar to FIG. 5B.

7 is a schematic vertical sectional view showing the relationship between the reader / writer antenna shown in FIG. 2C, the electronic tag shown in FIG. 4 and magnetic lines of force. 圆 8] A plan view similar to FIG. 2C of the shelf board in the second embodiment of the first group invention of the present invention.

(9) A perspective view of the entire article placement shelf in the first embodiment in which the invention of the second group of the present invention is applied to the article placement shelf.

10A] is a plan view showing a basic unit pattern shape of a reader / writer antenna of the uppermost shelf plate in FIG. 9. [FIG.

FIG. 10B is a plan view similar to FIG. 1 OA in which the state of the magnetic field component in the direction of the frontage according to the basic unit pattern shape in FIG. 10A is colored.

10C] is a plan view similar to FIG. 1 OA in which the state of the magnetic field component in the depth direction according to the basic unit pattern shape in FIG. 10A is added.

[FIG. 11A] A plan view showing a modification of the basic unit pattern shape of FIG. 10A of the uppermost shelf plate of FIG.

FIG. 11B is a plan view similar to FIG. 11A, showing the state of the magnetic field component in the frontage direction according to the basic unit pattern shape of FIG. 11A.

11C] is a plan view similar to FIG. 11A in which the state of the magnetic field component in the depth direction according to the basic unit pattern shape in FIG. 11A is added.

[FIG. 12A] A plan view showing only the first antenna of the two antennas constituting the reader / writer antenna of Arrangement Example 1 of the uppermost shelf plate in FIG. 9.

[FIG. 12B] A plan view showing only the second antenna of the two antennas constituting the reader / writer antenna of Arrangement Example 1 of the shelf board in the top row of FIG. 9.

[FIG. 12C] A plan view showing both of the two antennas constituting the reader / writer antenna of Arrangement Example 1 of the shelf board in the top row of FIG. 9.

[FIG. 13A] A plan view of the top shelf plate of FIG. 9 including the state of the magnetic field components in the frontage direction by two antennas constituting the reader / writer antenna of FIG. 12C.

13B is a plan view similar to FIG. 13A showing modified example 1 of the reader / writer antenna of FIG. 12C.

13C is a plan view similar to FIG. 13A showing a reference example of the reader / writer antenna of FIG. 12C. 14A is a plan view showing the direction of supply current and induction current of the reader / writer antenna of FIG. 13A of the uppermost shelf plate of FIG. 9;

14B is a plan view similar to FIG. 14A showing the reader / writer antenna of FIG. 13B.

14C is a plan view similar to FIG. 14B showing modified example 2 of the reader / writer antenna of FIG. 12C.

[FIG. 15A] A plan view showing a third modification of the reader / writer antenna of FIG. 12C on the uppermost shelf plate of FIG.

[15B] FIG. 15B is a plan view similar to FIG. 15A showing the longitudinally overlapping portion of the reader / writer antenna of FIG. 15A.

[FIG. 15C] A plan view similar to FIG. 15A showing the direction of supply current and induction current of the reader / writer antenna of FIG. 15A.

FIG. 16A is a plan view showing a modification 4 of the reader / writer antenna of FIG. 12C of the shelf board of FIG. 9;

FIG. 16B is a plan view similar to FIG. 14B showing modified example 5 of the reader / writer antenna of FIG. 12C.

FIG. 17 is a plan view showing the reader / writer antenna of Arrangement Example 2 of the shelf board in the top row of FIG. 9;

18A] A plan view showing a region where the magnetic field component in the frontage direction by the two antennas constituting the reader / writer antenna of FIG. 17 becomes weak.

FIG. 18B is a plan view similar to FIG. 18A showing modified example 1 of the reader / writer antenna of FIG. 17.

18C is a plan view similar to FIG. 18A showing a reference example of the reader / writer antenna of FIG. 17;

[FIG. 19A] A plan view showing the direction of supply current and induction current of the reader / writer antenna of FIG. 18A of the uppermost shelf plate of FIG.

FIG. 19B is a plan view similar to FIG. 19A showing the reader / writer antenna of FIG. 18B.

FIG. 19C is a plan view similar to FIG. 19B showing modified example 2 of the reader / writer antenna of FIG. 17. FIG. 20 is a plan view showing the reader / writer antenna of Arrangement Example 3 of the shelf board in the top row of FIG. 9;

FIG. 21A is a plan view showing a region where the magnetic field component in the frontage direction weakens due to two antennas constituting the reader / writer antenna of FIG. 20;

FIG. 21B is a plan view similar to FIG. 21A showing modified example 1 of the reader / writer antenna of FIG. 20.

21C is a plan view similar to FIG. 21A showing a reference example of the reader / writer antenna of FIG. 20;

22A] A plan view showing the direction of supply current and induction current of the reader / writer antenna of FIG. 21A of the uppermost shelf plate of FIG. 9. [FIG.

FIG. 22B is a plan view similar to FIG. 22A showing modification 2 of the reader / writer antenna of FIG. 20.

22C is a plan view similar to FIG. 22A showing modified example 3 of the reader / writer antenna of FIG. 20. FIG.

23A] A plan view showing a basic unit pattern shape of a reader / writer antenna of the shelf board of the uppermost stage in the second embodiment in which the second group invention of the present invention is applied to an article placing shelf. [FIG.

[FIG. 23B] is a plan view similar to FIG. 23A showing the state of the magnetic field component in the frontage direction according to the basic unit pattern shape of FIG. 23A.

[23C] FIG. 23C is a plan view similar to FIG. 23A to which the state of the magnetic field component in the depth direction according to the basic unit pattern shape of FIG. 23A is added.

圆 24] It is a plan view showing both of the two antennas constituting the reader / writer antenna of the shelf plate of the uppermost stage in the second embodiment of the second group invention of the present invention.

圆 25A] The state of the magnetic field component in the direction of the frontage by the two antennas constituting the reader / writer antenna of FIG. 24 of the top shelf plate in the second embodiment of the second group invention of the present invention is covered. FIG.

FIG. 25B is a plan view similar to FIG. 25A showing modified example 1 of the reader / writer antenna of FIG. 24. [FIG. 25C] A plan view similar to FIG. 25A showing a reference example of the reader / writer antenna of FIG.

FIG. 26A is a plan view showing the direction of the feed current and the induced current of the reader / writer antenna of FIG. 24 of the uppermost shelf plate in the second embodiment of the second group invention of the present invention.

[FIG. 26B] A plan view similar to FIG. 26A of the reader / writer antenna of FIG. 25B.

[FIG. 26C] A plan view similar to FIG. 26A showing modified example 2 of the reader / writer antenna of FIG.

[FIG. 27A] is a plan view similar to FIG. 24 showing modified example 3 of the reader / writer antenna of FIG.

[FIG. 27B] is a plan view similar to FIG. 24 showing Modified example 4 of the reader / writer antenna of FIG. 24.

[FIG. 28A] A plan view similar to FIG. 26A showing modified example 5 of the reader / writer antenna of FIG.

[FIG. 28B] A plan view similar to FIG. 26A showing modified example 6 of the reader / writer antenna of FIG.

圆 29] FIG. 27A is a schematic vertical cross-sectional view showing the relationship between the reader / writer antenna, the electronic tag, and the magnetic lines of force, of the shelf board of FIG. 27A.

[FIG. 30A] A plan view of the shelf board of FIG. 27A in a state in which a communication disabled area in an arrangement substantially parallel to the XY plane of the electronic tag is added.

[FIG. 30B] is a plan view similar to FIG. 30A in the state where the incommunicable area in the arrangement substantially parallel to the X-z plane of the electronic tag is added.

[FIG. 30C] A plan view similar to FIG. 30A in the state in which the incommunicable area in the arrangement substantially parallel to the yz plane of the electronic tag is added.

] 31] of the uppermost shelf plate in the third embodiment in which the second group invention of the present invention is applied to an article placing shelf, both of the two antennas constituting the reader / writer antenna are related thereto It is a top view shown with a circuit part.

FIG. 32A is a plan view similar to FIG. 31 showing Reference Example 1 of the reader / writer antenna of FIG. 31. [FIG. 32B] A plan view similar to FIG. 31 showing the reference example 2 of the reader / writer antenna of FIG. 31. 32C] The shelf board of the third embodiment of the second group invention of the present invention, FIG. FIG. 6 is a plan view including the state of magnetic field components in the depth direction of two antennas that constitute a reader / writer antenna.

FIG. 32D is a plan view similar to FIG. 32C showing a modification of the reader / writer antenna of FIG. 31.

圆 33] A partially omitted perspective view of the bookshelf in the first embodiment in which the third group invention of the present invention is applied to a bookshelf search system.

FIG. 34 is a plan view of the top shelf board of FIG. 33;

FIG. 35 is an enlarged longitudinal view of a portion of the shelf board of FIG. 34.

FIG. 36 is an enlarged perspective view of the books of FIG.

圆 37] A top view of the shelf board of FIG. 34 with the conductive porous sheet member attached and without the shield.

[38] Fig. 37 is an enlarged perspective view of the vicinity of a terminal portion of the shelf board without the shielding material of Fig. 37.

[39] Fig. 38 is an exploded perspective view of the vicinity of a terminal portion of the shelf board without the shielding material of Fig. 38.

FIG. 40 is a front view of the bookcase of the reference example 1 of the third group invention of the present invention.

FIG. 41 is a front view of the bookcase of the reference example 2 of the third group invention of the present invention.

圆 42] It is a top view of the shelf board of the uppermost step in the 2nd Example which applied the 3rd group invention of this invention to the bookshelf search system.

圆 43] FIG. 42 is an exploded perspective view of the first and second porous sheet members attached to the shelf board of FIG.

44 is an enlarged longitudinal sectional view of a portion of the shelf board of FIG.

[45] A top view of a shelf board in the third embodiment in which the third group invention of the present invention is applied to a bookshelf search system.

FIG. 46 is an enlarged longitudinal sectional view of a portion of the shelf board of FIG. 45.

[FIG. 47] Maximum communication in the vertical direction according to the position of the reader / writer antenna of the first to third embodiments and the reference example 1 of the third invention of the present invention in the opening direction with the electronic tag. It is a graph which shows possible distance.

[FIG. 48] The maximum communicable distance in the depth direction of the reader / writer antenna of the first to third embodiments and the reference example 1 of the third group invention of the present invention according to the position in the direction of the frontage with the electronic tag. Is a graph showing

[FIG. 49] A graph similar to FIG. 47 for the reader / writer antenna of Reference Example 2 of the third group invention of the present invention.

[FIG. 50] A graph similar to FIG. 47 for the reader / writer antenna of the third embodiment of the present invention according to the third embodiment.

FIG. 51 is a graph similar to FIG. 47 about the antenna for a relay writer of Reference Example 4 of the third group invention of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Next, examples of the first, second and third group inventions of the present invention will be described in “A, an example of the first group invention”, “B, an example of the second group invention” and “A. C, Third embodiment of the invention will be described with reference to the drawings.

A, an embodiment of the first group invention

First, two embodiments (the first and second embodiments) in which the first group invention of the present invention is applied to an article placing shelf are referred to as "first embodiment of the first group invention". The embodiments will be described with reference to FIGS. 1 to 8 by dividing the items into “Embodiment 2”, “2nd embodiment of the first group invention” and “3. Additional modification of the first group invention”.

1, first embodiment of the first group invention

First of all, according to the first embodiment of the first group invention of the present invention, "(1) Overall configuration of article placement shelf", "(2) Pattern shape of antenna for reader / writer" and "(3) Reader" Operation test for the writer antenna will be divided into sections and explained with reference to Figs. 1 to 7.

(1) Overall Configuration of the Item Mounting Shelf

The article management shelf (in other words, the article placement shelf) shown in FIGS. 1 to 3 in the first embodiment of the first group invention of the present invention, as shown in FIG. 2, towards the right side plate 3, back plate (in other words, back plate) 4, top plate 5 and bottom plate 6 has a nearly box lid shape (in other words, substantially rectangular shape) . These left and right side plates 2 , 3, the back plate 4, the top plate 5 and the bottom plate 6 can also be made of suitable materials such as glass, synthetic resin, wood and the like. The bottom plate 6 doubles as the bottom shelf plate. Article Management Shelf 1 may further include a front plate (not shown) that is preferably configured to be substantially transparent, such as glass and synthetic resin. Such a front plate may be, for example, a pair of left and right sliding doors. Note that one or more or all of the pair of left and right side plates 2 and 3, the back plate 4, the top plate 5, the bottom plate 6 and the front plate may be metal. Then, in the case of forming a reader / writer antenna on the surface of these plates, the surface may be covered with an insulating layer before the formation. Further, in the illustrated embodiment, the left and right side plates 2 and 3 are configured to slightly project downward from the bottom plate 6. The pair of left and right support legs 7 and 8 are respectively formed by the pair of left and right protrusions.

In the illustrated embodiment, the article management shelf 1 shown in FIG. 1 is mainly made of non-metallic suitable material such as glass, synthetic resin, wood or the like (in other words, transparent or opaque non-conductive material). The top shelf plate 11, the second shelf plate 12, the third shelf plate 13, the fourth shelf plate 14 and the lower shelf plate 6, which are respectively configured as components, are provided. There is a five-stage configuration. These shelf plates 6, 11 to 14 are supported on the pair of left and right side plates 2, 3 and the like by appropriate supporting means (not shown). Can.

On each of the shelf boards 6, 11 to 14 of the article management shelf 1 shown in FIG. 1, the reader / writer antenna 15 shown in FIG. 3 is installed so as to be approximately parallel to each shelf board surface. It is done. Then, these reader / writer antennas 15 are connected to an antenna switch (not shown) by a twist cable or coaxial cable (not shown) either via a matching adjuster (not shown). ing. Then, this antenna switching device is connected to the reader / writer main body 17 by a coaxial cable. The reader / writer body 17 is for exchanging information such as an electrical signal with the reader / writer antenna 15, and is connected to a computer (not shown) via an interface circuit (not shown). ing. The reader / writer main body 17 can be disposed on the article management shelf 1 and is disposed on the top 5 in the illustrated embodiment. The above-mentioned antenna switching device can be similarly disposed on the article management shelf 1 as needed. In the first group invention of the present invention, the shelf boards 6, 11 to 14 are It is also possible to construct metal suitable materials such as steel, aluminum alloy etc. respectively. In this case, a magnetic material sheet such as a ferrite sheet is interposed between the metallic material and the reader / writer antenna 15 so that the magnetic flux cancellation phenomenon due to the metallic material of the shelf plates 6 and 11 to 14 does not occur. Preferred to intervene (not shown) U ,.

Various forms of articles 18 are mixed and mounted on each of the shelf boards 6 and 11 to 14 of the article management shelf 1 shown in FIG. 1, and these articles 18 may be in the form of a sheet. Electronic tags 19 are provided respectively. When the article 18 is a book 18a, the electronic tag 19 is a side face in the case of an article 18b such as a box or a container other than the books attached to the back cover, front cover or back cover. , And the upper surface, the lower surface, etc. In any of these cases, the electronic tag 19 is not particularly required to have a specific position or a specific orientation with respect to the surface of each shelf board 6, 11 to 14. Such an electronic tag 19 is, as shown in FIG. 4, the small loop antenna 21 with one or more turns, and the information is A communication circuit may be provided, including a memory to be recorded and an IC chip 22 disposed in the central opening of the small loop antenna 21.

For example, each shelf board 6, 11 to 14 of the article management shelf 1 shown in FIG. 1 and FIG. 2 has a length L in the front direction x (see FIG. 2A) of about 900 mm and a length L in the depth direction y. (See Figure 2A) is about 350mm

1 2

It may be substantially rectangular. On each shelf plate 6, 11 to 14, as shown in FIG. 2, a reader / writer antenna 15 which also has first and second antennas A and B is installed. FIG. 2A is a plan view of, for example, the top shelf 11 in which the second antenna B is omitted and only the first antenna A is projected. FIG. 2B is a plan view of, for example, the top shelf 11, showing the first antenna A omitted and projecting only the second antenna B. FIG. 2C is a plan view of, for example, the top shelf 11, showing both the first and second antennas A and B in a projected manner. A reader / writer antenna 15 having substantially the same shape as the shelf plate 11 shown in FIG. 2 may be installed on each of the shelf plates 6 and 12 to 14 other than the shelf plate 11 as well. A reader / writer antenna 15 may be installed in which one or both of the antennas A and B have a shape different from that of the shelf board 11. In FIGS. 2 and 5 and all the drawings similar to these (including the case of the embodiments of the second and third inventions of the present invention described later), the first antenna is for convenience of illustration. A is indicated by a solid line, and the second antenna B is indicated by a broken line It shows by. Further, the width of each pattern portion of the antenna patterns 31 of the first and second antennas A and B is also shown thicker than the actual width for convenience of illustration.

[0071] The first and second antennas A and B of the reader / writer antenna 15 (specifically, the substantially loop shaped antenna pattern 31 and the pair of terminal portions 32a and 32b shown in FIGS. 2 and 5, respectively. In both cases, as shown in Fig. 3, conductive wire paint is applied to at least one of the upper and lower two plates 23 and 24 respectively made of non-metallic suitable materials such as glass, synthetic resin, wood, etc. For example, it may be a conductive pattern configured by printing and baking the silver paste, for example, in a width of about 20 mm, respectively. The first and second antennas A and B (specifically, both of the substantially loop-shaped antenna pattern 31 and the pair of terminal portions 32a and 32b) have a substantially circular sectional shape and a sectional diameter of 0. It may be constructed using 1 mm copper wire. In this case, the copper wire is bent and formed into a predetermined pattern, and then attached and arranged by being partially or totally adhered to at least one of the plates 23 and 24 with a suitable adhesive. Just do it. Furthermore, as described above, the pair of terminal portions 32a and 32b of the first and second antennas A and B are formed of the conductive pattern by printing and baking the conductive paint as described above. As configured, the substantially loop shaped antenna pattern 31 may also be configured with copper wire force, as described above. In this case, both ends of the antenna pattern 31 may be electrically connected to the pair of terminal portions 32a and 32b by bonding with an appropriate conductive adhesive, soldering or the like. Next, the first and second antennas A and B are upper and lower two plates 23 by laminating these plates 23 and 24 with an intermediate film 25 which is also a non-conductive film force such as PVB resin. It is sandwiched between 24. These plates 23, 24 are, for example, glass plates having a thickness of about 5 mm, and the thickness L of the intermediate film 25 may be

For example, it may be about 300 / z m. The materials constituting the first and second antennas A and B also need to be conductive films, conductive films, conductive metal foils, metal wires such as copper wires as described above, and the like. It may be a wire conductor etc.

The first and second antennas A and B of the reader / writer antenna 15 configured as described above are electrically insulated from each other and the surfaces of the shelf boards 6 and 11 to 14 as shown in FIG. The two glass plates 23 and 24 are sandwiched between the two glass plates 23 and 24 in a substantially parallel state (in other words, a state in which the antennas A and B are substantially parallel to each other). Therefore, these The contact of the first and second antennas A, B with the article 18 disposed on the shelf 6, 11 to 14 prevents the occurrence of scratches. In addition, since the glass plates constituting the upper and lower surfaces of the shelf boards 6, 11 to 14 are excellent in water resistance, chemical resistance and the like, the article management shelf 1 shown in FIG. 1 is used for various applications. Can. And when the main component of the shelf boards 6, 11 to 14 is a transparent glass material, the reader / writer antenna 15 is also a transparent conductive material such as indium tin oxide (ITO), tin dioxide (SnO 2), etc. Can be configured by a membrane and

2

Also, as described above, it can be constituted by fine wire conductors.

In the first group invention of the present invention, the distance L (see FIG. 3) between the plurality of antennas A and B which are substantially parallel to each other in the thickness direction is a viewpoint of practicality.

3

Generally, a range of 0.1 to 70 mm is preferred. However, this interval L is 0.1 mm.

3

Even if it is smaller, if there is electrical isolation between multiple antennas A and B, it can still be supported. Also, if the distance L is greater than 70 mm,

3

In any case, it becomes difficult to communicate well with the electronic tag 19 provided on the article 18 placed on the shelf boards 6, 11-14.

In the illustrated embodiment, the first and second antennas A and B of the reader / writer antenna 15 are embedded in the respective shelf boards 6 and 11 to 14 as shown in FIG. There is. However, at least one of the first and second antennas A and B may be formed in the same manner on the upper surfaces of the shelf boards 6 and 11 to 14. In addition, at least one of the antennas can be formed on the lower surface of each shelf plate 6, 11 to 14 by using the shelf plates 6, 11 to 14 by folding the upper and lower sides. Furthermore, one of the first and second antennas A and B may be formed on the upper surface of each shelf 6, 11 to 14 and the other may be formed on the lower surface of each shelf 6, 11 to 14. it can. In any of these cases, when the plates 23 and 24 which are the main components of each shelf plate 6 and 11 to 14 are interposed between the first and second antennas A and B, the intermediate film 25 is used. It can be omitted. Also, when these antennas A, B are formed on the top and Z or bottom of each shelf 6, 11-14, it reduces the chances of contacting the articles 18 placed on each shelf 6, 11-14. In order to achieve this, the upper surface and Z or lower surface of each of the shelf plates 6 and 11 to 14 including the at least one antenna can be coated with a coating film which also has an appropriate insulating material strength. (2) Pattern shape of the reader / writer antenna

The reader / writer antenna 15 for communicating with the electronic tag 19 provided on the article 18 by wireless communication comprises a first antenna A and a second antenna B, as shown in FIG. Each of the first and second antennas A and B is, as shown in FIG. 2, a pattern corresponding to the electronic tag 19 of the electromagnetic coupling type which is a loop type such as a substantially one loop shape. It has a shape. Each of the first and second antennas A and B is connected to the substantially loop shaped antenna pattern 31 and to both ends of the substantially loop shaped antenna pattern 31 as shown in FIG. It consists of a pair of terminal parts 32a, 32b close to each other. Since a gap 33 is provided between the pair of terminal portions 32a and 32b, a gap 33 similarly exists between both ends of the substantially loop-shaped antenna pattern 31. The pair of terminal portions 32a, 32b may be electrically connected to the matching adjuster by, for example, the twist cable (not shown). In the illustrated embodiment, the substantially loop shaped antenna patterns 31 of the first and second antennas A, B can be formed to be approximately equal width respectively. In addition, the pair of terminal portions 32a and 32b can also be formed to be approximately equal in width (in other words, about 20 mm in width) to the substantially loop-shaped antenna pattern 31 as necessary.

The substantially loop shaped antenna pattern 31 of the first antenna A is, as shown in FIG. 2A, provided with a terminal portion 32 a for feeding etc. connected in a row and located on the rear edge 34 side of the shelf board 11. The first pattern portion 35, the second pattern portion 37 located on the side of the left edge 36 facing the shelf plate 11, and the front edge of the shelf plate 11 (in other words, the edge on the product removal side) Part) The third pattern 39 located on the side of 38 and the terminal 32b for feeding etc. are connected in a row and the fourth pattern located on the side of the edge 40 on the right side of the shelf board 11 The part 41 may be connected in series. The antenna pattern 31 may be configured in a loop shape as a whole except for the gap 33 corresponding to the pair of terminal portions 32a and 32b. The antenna pattern 31 of the substantially loop shape of the first antenna A preferably has a substantially one-loop shape so that it has a crossing portion at which a part thereof crosses another part. In the text, the above "crossing" (that is, crossing between pattern portions) does not cross in a state of being electrically connected to each other, but an ante such as the shelf plate 6, 11 to 14 etc. It means that it intersects (in other words, it sees in a plane) the projection that saw the object to be formed from the top surface, meaning that it intersects.

[0077] As shown in FIG. 2A, the first pattern portion 35 of the first antenna A is close to the rear edge 34 of the shelf board 11 and substantially parallel to the rear edge 34 of the bracket (in other words, In the illustrated embodiment, it is substantially linear in the illustrated embodiment, and substantially parallel to the direction X of the front of the shelf 11 It extends throughout the country. The second pattern portion 37 of the first antenna A is close to the left edge 36 of the shelf 11 and is substantially parallel to the left edge 36 of the bracket (in other words, the depth direction y of the shelf 11 y And substantially straight in the illustrated embodiment--in the context of the present description, the same shall apply). The fourth pattern portion 41 of the first antenna A is slightly parallel to the right edge 40 of the bracket slightly away from the right edge 40 of the shelf 11 (in other words, in the depth direction of the shelf 11) extends approximately parallel to y).

The third pattern portion 39 of the first antenna A shown in FIG. 2A is slightly parallel to the front edge 38 of the bracket slightly away from the front edge 38 of the shelf 11 (in other words, the shelf The plurality of base line portions 43 intermittently extending such that an intermittent portion 42 is generated so as to form an intermittent portion 42 therebetween with the plate 11 in a state substantially parallel to the opening direction X It preferably comprises a plurality of bends 44 respectively present between the plurality of baseline portions 43 (in other words, the intermittent portion 42). Each baseline portion 43 is a virtual center line of the shelf board 11 extending in the direction X of the front of the shelf board 11 substantially along the center of the shelf board 11 in the depth direction y (hereinafter referred to as “shelf board center line” The front edge 38 extends beyond 45. Each bent portion 43 has its front edge connected to the edge on the right side toward the baseline portion 43 on the left side and the first bent up to the rear edge 34 of the shelf plate 11. The leading edge of the rising portion 46 and the leading edge of the right-side base line portion 43 are connected to the left edge thereof and a second rising edge rising toward the trailing edge 34 of the shelf 11. A connecting portion 48 extends substantially parallel to the frontal direction X so as to connect the rear ends of the portion 47 and the first and second rising portions 46 and 47, and a connecting portion 48 and a force. Each bent portion 43 is preferably a substantially rectangular convex portion as a whole. In this case, the connecting portion 48 is the rear edge 34 of the shelf 11 than the shelf centerline 45. Preferably, the side of the base extends substantially parallel to the frontal direction x. Therefore, the first and second rising portions 46, 47 are from one side of the shelf centerline 45 (specifically, the portion on the front edge 38 side of the shelf 11) to the other side (specifically, Preferably, the shelf board 11 extends in a direction substantially orthogonal to the shelf board center line 45 to the rear edge 34 of the shelf board 11).

[0079] The dimensions of the antenna pattern 31 of the first antenna A shown in FIG.

As described in the item (a) to (d). However, in the present text, this type of dimension is calculated with reference to a line passing substantially through the center of each antenna pattern portion of the antenna pattern 31 in the width direction.

(a) The distance L between the first rising portion 46 and the second rising portion 47 of each bent portion 44: about 150 mm

Four

Distance L between the second rising portion 47 of the first bend 44 and the right side of the first bend 44

Four

It may be substantially the same as the distance between the adjacent second bending portion 44 and the first rising portion 46. ),

(b) The length L of each of the first and second rising portions 46 and 47 of each bending portion 44: about 180 m

5 m,

(c) A distance L between the first pattern portion 35 and the baseline portion 43: about 250 mm, and

6

(d) The distance L between the first pattern portion 35 and the connecting portion 48: about 70 mm (This figure shows the formula (L-

7 6

L = L) Forces can also be determined. ;).

5 7

As apparent from observation of FIG. 2, the substantially loop shaped antenna pattern 31 of the second antenna B shown in FIG. 2B is the substantially loop shaped antenna pattern of the first antenna A shown in FIG. 2A. The reference numeral 31 is substantially line symmetrical with respect to the shelf centerline 45 as an axis of symmetry. However, as is clear from FIG. 2C, the antenna pattern 31 of the second antenna B is approximately 1Z 2 of the distance L described in the above (a) with the antenna pattern 31 of the first antenna A.

Four

In the illustrated embodiment, it is formed on the shelf board 11 so as to be offset to the right by about 80 mm). Therefore, the above description of the antenna pattern 31 of the first antenna A excludes the changes caused by the rightward shift as described above and the line symmetry as described above. The same applies to the antenna pattern 31 of the antenna B of 2.

The antenna pattern 31 of the second antenna B is slightly described with reference to FIG. 2B. Then, the second pattern portion 37 is slightly away from the left edge 36 of the shelf 11 and almost parallel to the left edge 36 (in other words, substantially in the depth direction y of the shelf 11) Extend in parallel). The fourth pattern portion 41 of the second antenna B is close to the right edge 40 toward the shelf 11 and substantially parallel to the right edge 40 of the bracket (in other words, the depth direction of the shelf 11) extends approximately parallel to y). As shown in FIG. 2C, each base line portion 43 of the first antenna A is located substantially at the same position in the depth direction y as each coupling portion 48 of the second antenna B in plan view. Therefore, in plan view, they overlap each of the connecting portions 48 by approximately 1Z2. Since each connecting portion 48 of the first antenna A is present at substantially the same position in the depth direction y with respect to each baseline portion 43 of the second antenna B in plan view, As seen, it overlaps with each of the baseline portions 43 by approximately 1Z2. This is because the center line in the depth direction y of each of the bent portions 44 of the first and second antennas A and B respectively constituted by the substantially rectangular convex shaped portions substantially coincides with the shelf center line 45 It is for. In this case, the baseline portion 43 of one antenna A or B and the coupling portion 48 of the other antenna B or A are somewhat offset from each other in the depth direction y, which is not necessary to overlap each other as described above. Even though! /.

As shown in FIG. 2C, in a state in which the first and second antennas A and B of the reader / writer antenna 15 are formed on the common shelf board 11, the first pattern portion of the first antenna A 35 Is extended close to the rear edge 34 of the shelf 11 and substantially parallel to the rear edge 34 of the bracket, and extends over almost the entire length of the front of the shelf 11. Also, the first pattern portion 35 of the second antenna B is close to the front edge 38 of the shelf 11 and substantially parallel to the front edge 38 of the bracket. However, the shelf board 11 is somewhat distant from the left edge 36). In addition, the second pattern portion 37 of the first antenna A is close to the left edge 36 of the shelf 11 and is substantially parallel to the left edge 36 of the bracket. It extends over almost the entire length of (but at some distance from the front edge 38 of the shelf 11). Also, the fourth pattern portion 41 of the second antenna B is close to the edge 40 to the right of the shelf 11 and is substantially parallel to the right edge 40. Almost the entire length of the direction y However, it is slightly away from the rear edge 34 of the shelf board 11. It extends over). In addition, the first, second and third baseline sections 43 of the first antenna A and the first and second coupling sections 48 of the second antenna B are the shelf board centerline 45 and the shelf board 11. It is located between the front edge 38 respectively. Furthermore, the first and second coupling portions 48 of the first antenna A and the first, second and third baseline portions 43 of the second antenna B are the shelf centerline 45 and the shelf 11 It stands between its rear edge 34; ^.

Between the second pattern portion 37 of the first antenna A and the fourth pattern portion 41 of the second antenna B,

(a) The second pattern portion 37 of the first antenna A,

(b) second pattern portion 37 of second antenna B,

(c) the first rising portion 46 of the first bending portion 44 of the first antenna A,

(d) the first rising portion 46 of the first bending portion 44 of the second antenna B,

(e) the second rising portion 47 of the first bending portion 44 of the first antenna A,

(f) the second rising portion 47 of the first bending portion 44 of the second antenna B,

(g) first rising portion 46 of second bending portion 44 of first antenna A;

(h) first rising portion 46 of second bending portion 44 of second antenna B;

(i) second rising portion 47 of second bending portion 44 of first antenna A,

(j) second rising portion 47 of second bending portion 44 of second antenna B;

(k) the fourth pattern portion 41 of the first antenna A, and

(1) The fourth pattern portion 41 of the second antenna B,

Are each at approximately equal intervals (ie approximately L Z2 intervals),

Four

It is arranged sequentially to the right side. In the above-described sequential arrangement, the communicable area may be wider if the intervals are not necessarily approximately the same. In this case, the fluctuation range of each of these intervals is generally ± 25% compared to the case of equal intervals in terms of practicality (in the illustrated embodiment, the above-mentioned intervals are 0.375 L to The numerical range of 0. 625 L) is preferred.

4 4

In the illustrated embodiment, the first pattern portion 35 of the pattern elements constituting the antenna pattern 31 shown in FIG. 2C, the base line portion 43 and the connecting portion 48 are respectively provided. It is configured to extend substantially in the direction of the frontage x of the shelf board 11. Further, each of the second pattern portion 37, the fourth pattern portion 41, the first rising portion 46 and the second rising portion 47 of the pattern elements is substantially in the depth direction y of the shelf board 11. It is configured and extended. Each of the notched elements 35, 43, 37, 41, 46 to 48 is simply inclined or folded with respect to the frontal direction X or depth direction y of the shelf board 11. It may be inclined in a zigzag shape such as a linear shape or a wave shape. However, in this case, in terms of practicality, it is generally preferred that the angle formed by each of pattern elements 35, 43, 48 with respect to opening direction X of shelf plate 11 be in the range of ± 20 °. The range of ± 10 ° is more preferable, and the range of ± 5 ° is most preferable. Further, in this case, generally speaking, the angle of each of the notan elements 37, 41, 46, 47 to the depth direction y of the shelf board 11 is in the range of ± 20 °, also in terms of practicality. It is most preferable that the range of ± 10 ° is more preferable, and the range of ± 5 ° is more preferable. Furthermore, in this case, the angle formed by the adjacent first and second rising portions 46 and 47 constituting the antenna pattern 31 of any one of the plurality of antennas A and B is one of these first The second and third rising portions 46 and 47 should be as small as possible so as to prevent the magnetic field lines generated by the respective second and third rising portions 46 and 47 from interfering with each other as much as possible. Therefore, it is preferable that the convex-shaped bending portion 44 be substantially trapezoidal (although it is trapezoidal in a horizontal direction) such as substantially rectangular or substantially parallelogram. Also, in this case, generally speaking, the angle between the first and second rising portions 46 and 47 adjacent to each other constituting the common antenna pattern 31 is ± 20 °. It is most preferable that the range is ± 10 °, more preferably ± 5 °.

(3) Operation test of antenna for reader / writer

FIG. 7 shows an electronic tag 19 provided on an article 18 and a shelf board 11 respectively used in the first embodiment of the first group invention of the present invention shown in FIGS. 1 to 3. The relationship between the substantially loop-shaped antenna pattern 31 of the reader / writer antenna 15 and the magnetic lines of force 101 is schematically shown. In FIG. 7, the antenna pattern 31 extends substantially perpendicularly to the paper surface (in other words, the surface of FIG. 7). The electronic tag 19 shown in FIG. 4 used in the operation test shown in FIG. 7 has a longitudinal length L force of 3⁄45.6 mm and a lateral direction. The length was L force S 54 mm.

9

In the above-described operation test, the first and second antennas A and B provided on the shelf board 11 were alternately fed with high frequency of 13.56 MHz. Along with this, the electronic tag 19 for the reader / writer antenna 15 is moved in a substantially horizontal direction while keeping the electronic tag 19 in a substantially constant direction with respect to the surface of the shelf board 11 and keeping a substantially constant distance from this surface. Whether or not to communicate was judged. In FIG. 5 and FIG. 6 showing the evaluation results in the above operation test, the incommunicable area 102 where the communication is not performed relatively well is indicated by a halftone. In addition, the communication coverage area 103 where the above communication is performed relatively well is not halftoned.

In FIG. 5A, the surface of the electronic tag 19 is substantially parallel to the surface of the shelf 11, and the longitudinal direction of the electronic tag 19 is substantially in the direction X of the front of the shelf 11. Then, the electronic tag 19 is held so that the distance between the surface of the shelf board 11 and the electronic tag 19 is substantially constant at approximately 80 mm, and the electronic tag 19 is located above the shelf board 11 and in the peripheral area thereof. It shows the evaluation results when it was moved. From FIG. 5A, when the electronic tag 19 is above the shelf board 11, communication between the reader / writer antenna 15 and the electronic tag 19 is surely possible. In FIG. 5B, the surface of the electronic tag 19 is substantially perpendicular to the surface of the shelf 11, and the length direction of the electronic tag 19 is substantially the y direction of the shelf 11. 5B shows that the distance between the surface of the shelf board 11 and the upper side of the electronic tag 19 is substantially constant, ie, approximately 80 mm (the distance between the lower side of the electronic tag 19 is approximately 26 mm). 19 shows the evaluation result in the case where the electronic tag 19 is moved above the shelf board 11 and in the peripheral area while holding the reference numeral 19. From FIG. 5B, it can be seen that there is almost no position where communication of the reader / writer antenna 15 with the electronic tag 19 is disabled above the shelf board 11. In FIG. 5C, the surface of the electronic tag 19 is substantially perpendicular to the surface of the shelf 11, and the length direction of the electronic tag 19 is substantially in the direction X of the front of the shelf 11. Then, hold the electronic tag 19 so that the distance between the surface of the shelf 11 and the upper side of the electronic tag 19 is approximately 80 mm (the distance between the lower side of the electronic tag 19 is approximately 26 mm). The evaluation result in the case where the electronic tag 19 is moved above the shelf board 11 and in the peripheral area thereof is shown. From FIG. 5C, communication of the reader / writer antenna 15 with the electronic tag 19 is disabled above the shelf board 11. It is understood that the position where it is.

Even when the electronic tag 19 is inclined in any of the three directions shown in FIGS. 5A to 5C, the first and second ones of the antenna 15 for the reader / writer may be inclined. Magnetic field lines 101 generated by the pattern elements 35, 37, 41, 4 3, 46 to 48 of any of the antenna patterns 31 of the antenna A and B intersect the electronic tag 19. However, when the first magnetic field 101 is fed to the first antenna A, the magnetic field lines generated by the magnetic field generated by the first antenna A and the second antenna induced by the first antenna A B force includes magnetic lines of force due to the induced magnetic field generated. The magnetic field lines 101 are also generated from the magnetic field lines by the magnetic field generated by the second antenna B and the first antenna A induced by the second antenna B, even when the second antenna B is fed. It includes magnetic lines of force due to the induction magnetic field. Therefore, even when inclined as described above, the position where the reader / writer antenna 15 can not communicate with the electronic tag 19 above the shelf plate 11 as in the case shown in FIGS. 5A to 5C. It turns out that there is almost no.

[0089] For comparison with FIGS. 5A to 5C, FIG. 6 shows the case where the reader / writer antenna 15 has a single antenna power as shown in FIGS. 2A and 2B. The same evaluation results as in the case of Figure 5A to 5C are shown. In FIG. 6, the same parts as in FIG. 2 and FIG. 5 will be assigned the same reference numerals and explanations thereof will be omitted. In the case of FIG. 6, as in the case of FIG. 5B, the surface of the electronic tag 19 is substantially perpendicular to the surface of the shelf 11, and the length direction of the electronic tag 19 is substantially the y direction of the shelf 11. ing. Then, the electronic tag 19 is held so that the distance between the surface of the shelf 11 and the upper side of the electronic tag 19 is approximately 80 mm (the distance between the lower side of the electronic tag 19 is approximately 26 mm). To move the electronic tag 19 above the shelf board 11! /.

FIG. 6A shows an evaluation result similar to the case of FIG. 5B in the case of the simple loop type reader / writer antenna 15 as the first comparative example (in other words, the first reference example). ing. The substantially loop shaped antenna pattern 31 of the reader / writer antenna 15 is substantially rectangular. From FIG. 6A, it is almost impossible to communicate the reader / writer antenna 15 with the electronic tag 19 at the central portion of the shelf 11, and can communicate only near the left and right side edges 36 and 40 of the shelf 11. I understand. The reason is that the shelf board 11 is almost parallel to the frontal direction X This is because, depending on the pattern elements ₃₅ and ₃₉ , magnetic lines of force 101 intersecting the surface of the small antenna 21 of the electronic tag 19 whose surface is disposed so as to be substantially perpendicular to the surface of the shelf plate 11 are not generated.

[0091] FIG. 6B is a reader / writer antenna having a single antenna power having substantially the same shape as the first antenna A shown in FIG. 2A as a second comparative example (in other words, the second reference example). The same evaluation results as in the case of FIG. 5B are shown. In the case of FIG. 6B, the communicable area 103 of the reader / writer antenna 15 with the electronic tag 19 is wider than in the case of the simple loop reader / writer antenna shown in FIG. 6A. However, a region extending substantially in the depth direction y through a substantially central portion in the opening direction X of the base line portion 43 of the reader / writer antenna 15 and an approximately central portion in the opening direction X of the connecting portion 48 A communication disabled area 102 exists in each of the areas extending through in the depth direction y.

Second Embodiment of the First Group Invention

In the first group invention of the present invention, each of a plurality of antennas (for example, the first and second antennas A and B) constituting the reader antenna 15 provided on the shelf boards 6 and 11 to 14 is provided. The configuration, such as the shape, of the substantially loop shaped antenna pattern 31 is not limited to that of the first embodiment shown in FIGS. 1 to 3, and the second embodiment shown in FIG. Various changes and modifications are possible as illustrated. The shelf board 11 in the second embodiment shown in FIG. 8 may have substantially the same configuration as the shelf board 11 in the first embodiment described above, except for the points described below. Therefore, in FIG. 8, the same reference numerals are given to the portions common to FIGS. 1 to 3 and the description thereof will be omitted as necessary. Further, in the following description, only the shelf plate 11 will be described. The remaining shelf plates 6 and 12 to 14 have substantially the same configuration as the shelf plate 11.

In the first embodiment shown in FIGS. 1 to 3, each of the first pattern portions 35 of the first and second antennas A and B of the reader / writer antenna 15 is a rear edge portion of the shelf board 11 34 or a front edge 38, which comprises a linear pattern element extending substantially along the line, and each of the third pattern portions 39 of the first and second antennas A and B comprises a plurality of baseline portions 43 and It was composed of a plurality of bends 44. However, each first pass of the first and second antennas A and B Each of the turn portion 35 and each of the third pattern portions 39 is, as exemplified in the second embodiment shown in FIG. 8, a portion composed of linear pattern elements, a baseline portion 43 and a bending portion A portion composed of 44 may be mixed. For example, as shown in FIG. 2C and FIG. 8, the reader / writer antenna 15 provided on the shelf 11 is paired with the left and right virtual unit area dividing lines 154 extending substantially in the depth direction y of the shelf 11. When divided into first and second unit areas (in other words, a plurality of unit areas) 155 and 156, pattern elements of the first and second antennas A and B in the first unit area 155 Only 35, 37, 43, 46 to 48 can be changed to new pattern elements arranged substantially line-symmetrically in the shelf plate 'with the line 45 as the axis of symmetry, as shown in FIG.

In this case, in the next four places, a cut extending substantially in the depth direction y of the shelf board 11 is generated in the vicinity of the unit area dividing line 154.

(a) A first gap between the pattern element 35 of the first antenna A of the first unit area 155 and the pattern element 43 of the first antenna A of the second unit area 156,

(b) a second gap between the pattern element 43 of the first antenna A of the first unit area 155 and the antenna element 35 of the first antenna A of the second unit area 156,

(c) a third gap between the pattern element 43 of the second antenna B of the first unit area 155 and the pattern element 35 of the second antenna B of the second unit area 156, and

(d) A fourth gap between the pattern element 35 of the second antenna B of the first unit area 155 and the pattern element 43 of the second antenna B of the second unit area 156.

Therefore, it is necessary to provide four first to fourth connecting portions 57, which are new linear pattern element forces for eliminating these four cuts. These connecting portions 57 extend substantially in the depth direction y of the shelf plate 11 as in the illustrated embodiment, or extend obliquely with respect to the depth direction y. Good. In the illustrated embodiment, as shown in FIG. 8, a first connecting portion 57 for connecting the first gap described in the above (a), and a third connecting portion described in the above (c). The third connecting portion 57 connecting the gaps is, in a plan view, a second connecting portion 57 connecting the second gaps described in the item (b); and the item (d) described in the item (d) They are respectively overlapped with the fourth connecting portion 57 connecting the fourth gap. However, in this case, the first and third connecting portions 57 are, in plan view, the second and fourth connecting portions 57 and It is necessary for the respective members to overlap each other in particular, extending approximately parallel to each other at an appropriate distance in the front and back direction X, or mutually intersecting each other, or forming a generally V shape as a whole. You may

Also in the case of the reader / writer antenna 15 in the second embodiment shown in FIG. 8 configured as described above, it is substantially the same as the first embodiment shown in FIGS. There is almost no position on the shelf board 11 where the reader / writer antenna 15 can not communicate with the electronic tag 19.

[0097] 3, Additional Modifications of the First Group Invention

In the above, the first and second embodiments of the first group invention of the present invention have been described in detail. However, in the first group invention of the present invention, various changes and modifications are further possible based on the spirit of the invention described in the claims other than the first and second embodiments. .

For example, in the first and second embodiments of the first group invention, the shelf boards 6, 11 to 14 with five tiers up and down are article management shelves (in other words, article placement shelves) Provided in 1. However, the shelf board does not necessarily have to be provided in the upper and lower five stages, and in some cases, it may be possible to provide another plural stages of two to four stages or six or more stages, or only one stage.

In the first and second embodiments of the first group invention, the substantially loop shaped antenna pattern 31 of the first and second antennas A and B of the reader / writer antenna 15 is , One-roll one. Alternatively, these antenna patterns 31 may be a plurality of turns wound a plurality of times in a spiral or the like. Even in this case, it is preferable that the antenna pattern 31 has no crossing point where one part thereof and another part thereof cross each other.

In the first and second embodiments of the first group invention, the antenna elements 35, 37, 41 of the first and second antennas A and B of the reader / writer antenna 15 are also included. The connection points between 43 and 46 to 48 were pointed at substantially right angles. However, one or more or all of the connection portions may have a rounded shape.

In the first and second embodiments of the first group invention, the reader / writer is The number of bent portions 44 in each of the third pattern portions 39 of the first and second antennas A and B of the antenna 15 is set to two. However, the number of bent portions 44 of each of the third pattern portions 39 is not necessarily limited to two, and may be three or more in some cases. .

In the first and second embodiments of the first group invention, the left and right pair of first and second unit areas 155 and 156 are respectively provided on the shelf boards 6 and 11 to 14 respectively. Provided. However, the number of unit areas provided in each of the shelf boards 6 and 11 to 14 does not necessarily have to be two, and may be three or more in some cases, and may be one. In addition, when providing three unit areas in each shelf board 6, 11-14, for example, in the shelf board 11 shown in FIG. 2C and Z or FIG. The force to be increased, or the first and second unit areas 155 and 156 may be compressed in the direction X of the front opening into a pattern. Then, together with this, the left unit area 155 and the right unit area 156 are formed to be separated from each other, and a third unit area is formed between the first and second unit areas 155 and 156. You just have to This third unit area may be the left unit area 155 shown in FIG. 2C, the left unit area 155 shown in FIG. In this case, the second pattern portions 37 of the first and second antennas A and B are unnecessary in any of the unit regions 155 on the left side shown in FIGS. 2C and 8 respectively. can do. In other words, only the first pattern portion 35 and the third pattern portion 39 of the left unit region 15 5 shown in FIG. 2C and FIG. 8 are disposed between the first and second unit regions 155 and 156, respectively. do it.

In the first and second embodiments of the first group invention, the antenna patterns 31 constituting the reader / writer antenna 15 are configured to have substantially equal widths throughout. However, partially wide pattern portions or partially narrow pattern portions may be present in the antenna pattern 31. The same applies to the thickness of the antenna pattern 31.

Further, in the first and second embodiments of the first group invention described above, two antennas consisting of the first and second antennas A and B are used as the reader / writer antenna 15 in each shelf. It was made to provide in board 6, 11-14, respectively. However, each shelf board 6, 11 to 14 more than three An antenna can also be provided. In this case, the feeding to these three or more antennas can be switched sequentially so that these three or more antennas operate in sequence.

Furthermore, in the first and second embodiments of the first group invention, the shelf boards 6, 11 to 14 are configured in a substantially rectangular shape elongated in the direction X of the front part. However, the shelf boards 6, 11 to 14 have a substantially polygonal shape other than a substantially rectangular shape, a substantially arc shape, a substantially circular shape (in this case, the shelf boards 6, 11 to 14 or the entire article placement shelf 1 is rotated). It may be a formula, it may be a substantially U-shaped, a substantially V-shaped bent or curved non-linear shape such as a V-shape. In this case, the article storage space on the shelf boards 6, 11 to 14 and the frontal direction X of the shelf boards 6 and 11 to 14 are similarly substantially polygonal shapes other than substantially rectangular shapes, substantially arc shapes, substantially circular shapes, substantially U It may be in the shape of a curve, a substantially V-shape, or other non-linear shape that is bent, bent or bent.

B, Example of the Second Group Invention

Next, three embodiments (ie, the first, second and third embodiments) in which the second group invention of the present invention is respectively applied to the article placing racks are referred to as "1, 2nd group First embodiment of the invention, "2, second embodiment of the second group invention", "3, third embodiment of the second group invention" and "4, second modification of the second group invention The examples are divided into sections and described with reference to FIGS. 9 to 32.

1, the first embodiment of the second group invention

First of all, according to the first embodiment of the second group invention of the present invention, “(1) Overall configuration of article placement shelf”, “(2) Basic unit pattern shape of antenna for reader / writer”, “( 3) A concrete pattern shape of the reader / writer antenna and (4) a method of supplying power to the reader / writer antenna will be described with reference to FIGS. 9 to 22.

(1) Overall Configuration of the Item Mounting Shelf

As shown in FIG. 9, the article placement shelf 1 and the electronic tag 19 in the first embodiment of the second group invention of the present invention have the configuration of the reader / writer antenna provided on the shelf boards 6 and 11-14. Except for the difference, the configuration may be substantially the same as that of the article placement shelf 1 and the electronic tag 19 in the first embodiment of the first group invention of the present invention. Therefore, in FIG. 9 to FIG. 22, the same reference numerals as in FIG. 1 to FIG. Omit as needed.

In the article placement shelf 1 shown in FIG. 9, the antenna switching device is connected by the coaxial cable 16 to the reader / writer main body 17 and a control computer (not shown). Further, in the first embodiment of the second group invention, the length L of the direction X of the opening in the space between the shelf plates 6 and 11 to 14 and the length L of the direction y of the depth are shown in FIG. 12C. Furthermore, Figure 12C.

1 2

And all the drawings similar thereto (including the cases of the second and third embodiments and the first to third embodiments of the third invention described below), the first and second embodiments. The actual widths of the pattern portions of the antenna pattern 31 of the antenna 8 and the antenna pattern 31 may be substantially identical to each other, but for convenience of illustration, each pattern of the antenna pattern 31 of the second antenna B is shown. The width of the portion is shown thicker than the width of each pattern portion of the antenna pattern 31 of the first antenna A.

(2) Basic unit pattern shape of antenna for reader / writer

As shown in FIG. 12C, the reader antenna 15 for communicating with the electronic tag 19 provided on the article 18 by wireless communication also comprises a force with the first antenna A and the second antenna B. As shown in FIGS. 12A and 12B, each of the first and second antennas A and B has a continuous antenna pattern 31 in a substantially loop shape and a series of antennas at both ends of the substantially loop antenna pattern 31. A pair of terminal portions 32a, 32b disposed close to each other is provided with force. Since a gap 33 is provided between the pair of terminal portions 32a and 32b, a gap 33 similarly exists between both ends of the substantially loop-shaped antenna pattern 31. The pair of terminal portions 32a, 32b may be electrically connected to the matching adjuster (not shown) by the twist cable (not shown).

Basic unit pattern shapes of the first and second antennas A and B constituting the reader / writer antenna 15 shown in FIG. 12C. C Force: As shown in FIG. 10A. This basic unit pattern shape C is substantially the same as the pattern shape of the first antenna A shown in FIGS. 12A and 12C. The substantially loop-shaped antenna pattern 31 of this basic unit pattern shape C is, as shown in FIG. 10A, provided with a terminal portion 32a for feeding or the like connected in series and located on the rear edge 34 side of the shelf board 11. 1 pattern portion 35, the second pattern portion 37 located on the side of the left edge 36 facing the shelf 11 and the front edge of the shelf 11 (in other words, the article The third pattern portion 39 located on the side of the extraction side 38) and the terminal portion 32b for feeding etc. are connected in a row, and the fourth located on the side of the edge 40 on the right side toward the shelf board 11. The pattern portion 41 of the may be sequentially connected. The antenna pattern 31 may be configured in a loop shape as a whole, except for the gap 33 corresponding to the pair of terminal portions 32a and 32b. It is preferable that the basic unit pattern shape C has a substantially one-loop shape, with crossing points where one part and another part cross each other.

[0112] The first pattern portion 35 of the basic unit pattern shape C is close to the rear edge 34 of the shelf plate 11 and substantially parallel to the rear edge 34 of the bracket as shown in FIG. 10A (in other words, , And is substantially parallel to the frontal direction X of the shelf 11 and is substantially linear in the illustrated embodiment (the same applies hereinafter). doing. The second pattern portion 37 of the basic unit pattern shape C is close to the left edge 36 toward the shelf 11 and almost parallel to the left edge 36 of the bracket (in other words, the depth direction of the shelf 11 It is in a state substantially parallel to y, and in the illustrated embodiment, it is substantially linear (the same applies hereinafter). The fourth notch portion 41 of the basic unit pattern shape C is slightly parallel to the right edge 40 of the bracket slightly away from the right edge 40 toward the shelf 11 (in other words, the depth of the shelf 11) It extends with almost parallel to the direction y).

The third pattern portion 39 of the basic unit pattern shape C shown in FIG. 10A is slightly parallel to the front edge 38 of the bracket with a slight distance from the front edge 38 of the shelf 11 (in other words, the shelf The plurality of baseline portions 43 intermittently extending such that intermittent portions 42 are generated so as to form an intermittent portion 42 between them with the plate 11 in a state substantially parallel to the opening direction X And one or more (preferably, a plurality of) bends 44 which are respectively present between each other (in other words, the intermittent portion 42) of the plurality of baseline portions 43 being It is. Each baseline portion 43 is a virtual center line (hereinafter referred to as “shelf centerline”) 45 of the shelf 11 extending in the direction of the front of the shelf 11 along the center of the shelf 11 in the depth direction y. Rather, it extends on the front edge 38 side. The distance between the first pattern portion 35 and the shelf centerline 45 in the depth direction y is the distance between the plurality of baseline portions 43 and the shelf centerline 45 in the depth direction y. Substantially the same as the Therefore, the shelf centerline 45 also serves as an imaginary centerline extending in the frontal direction X of the basic unit pattern shape C.

Each bent portion 44 has its proximal end portion connected to the end portion on the right side toward the left baseline portion 43 as shown in FIG. The base end portion of the first rising portion 46 rising toward the front end and the base end portion of the left side end portion of the right base line portion 43 are continuously connected to the rear edge portion 34 of the shelf 11. It extends substantially parallel to the opening direction X so as to connect the leading end of the second rising portion 47 and the tips of the first and second rising portions 46 and 47 facing each other. It may be integrated with the connecting part 48. Each of the bent portions 44 is preferably a generally rectangular convex portion as a whole. In this case, the connecting portion 48 preferably extends substantially parallel to the frontal direction X with respect to the shelf center line 45 on the side of the rear edge 34 of the shelf 11. Therefore, the first and second rising portions 46, 47 are from one side of the shelf board 11 (specifically, a portion on the front edge 38 side of the shelf board 11) divided by the shelf board center line 45. It is preferable to extend to the other side (specifically, the portion on the trailing edge 34 side of the shelf 11) so as to intersect the shelf center line 45 substantially perpendicularly! /.

The dimensions of the antenna pattern 31 of the basic unit pattern shape C shown in FIG. 10A are as described in the following (a) to (d).

Four

It may be substantially the same as the distance between the adjacent second bent portions 44 and the first rising portion 46 (in other words, the length of each base line portion 43). ),

5 m,

6

7 6

L = L) Forces can also be determined).

5 7

A modification of the basic unit pattern shape C shown in FIG. 10A is shown in FIG. 11A.

The basic unit pattern shape C shown in FIG. 11A is different from the basic unit pattern shape C shown in FIG. 10A in the second and fourth pattern portions 37, 41 and the first and second pattern portions. Each of the rising portions 46 and 47 is not parallel to the depth direction y, but is inclined by a predetermined angle. The direction of this inclination is, in the illustrated embodiment, a direction in which the side force of the front edge 38 of the shelf 11 also tends to the side of the rear edge 34 and the left force also inclines to the right. The direction of inclination may be the same as in the illustrated embodiment for each of the second and fourth pattern portions 37 and 41 and the first and second rising portions 46 and 47. The opposite direction may or may not be inclined. Further, the predetermined angle Θ is about 5 ° in the illustrated embodiment. However, the predetermined angle Θ also has the same value as in the illustrated embodiment for each of the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47. It may be good, or it may not be the same value, but it may be slightly larger or smaller. And, in view of practicality, the predetermined angle Θ is preferably in the range of 0 ° to 15 ° in one aspect of the second group invention of the present invention. More preferably, it is in the range of 10 °, more preferably in the range of 0 ° to 5 °. Therefore, each of the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47 can be roughly extended along the depth direction y.

The basic unit pattern shape C shown in FIG. 10A and FIG. 11A has a plurality of substantially rectangular bent portions 44, and the substantially loop shaped antenna pattern 31 has an intersection portion! Awkwardly, almost one-loop shaped. The characteristic of the basic unit pattern shape C shown in FIGS. 10A and 11A is that the magnetic field components in the frontal direction X parallel to the surface of the shelf plate 11 are approximately periodically along the frontal direction X according to the position thereof. It is changing and tends to weaken in the hatched area 49 in FIGS. 10A and 11B. This is because the magnetic field component generated parallel to the frontal direction X by antenna pattern portions (that is, the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47) extending in the depth direction y This is because the force decreases at the middle position between these adjacent antenna pattern parts. Therefore, in the basic unit pattern shape C alone shown in FIG. 10A or FIG. 11A, the electronic tag 19 (see FIG. 4) is parallel to the y-z plane (z is the direction perpendicular to the plane of the shelf board 11) When placed in the hatched area 49, the reader / writer antenna 15 (in other words, the basic unit pattern shape C shown in FIG. 10A or FIG. 11A) can communicate with the electronic tag 19. There is a fear.

As described above, to communicate with the electronic tag 19 placed so that the reader / writer antenna 15 is parallel to the y-z plane, each of the antenna patterns of the reader / writer antenna 15 emits light. The component parallel to the direction X of the front of the magnetic field is affected. Therefore, the first and second rising portions 46 and 47 of the bent portion 44 of the antenna not having the intersection portion, and the antenna pattern portion extending in the approximate depth direction y of the antenna having the intersection portion have the opening direction It preferably extends perpendicular to X. However, as shown in FIG. 11A, each of these antenna pattern portions may have some inclination angle Θ. In addition, the antenna patterns adjacent to each other among the antenna pattern portions (that is, the second and fourth pattern portions 37 and 41 and the first and second rising portions 46 and 47) extending in the approximately direction back to the direction y. In the case of the na pattern part, the width of the opening direction X of the incommunicable area of the basic unit pattern shape C with respect to the electronic tag 19 placed parallel to the y-z plane is constant as far as possible along the depth direction y. Preferably, they are substantially parallel to one another.

[0119] While the magnetic field components in the frontage direction X parallel to the surface of the shelf board 11 for the basic unit pattern shape C shown in FIG. 10B and FIG. 11B force are shown in FIG. And FIG. 11C shows the magnetic field component in the depth direction y parallel to the surface of the shelf board 11 for the basic unit pattern shape C shown in FIG. 10A and FIG. 11A. The magnetic field component in the depth direction y parallel to the surface of the shelf 11 also tends to be weak in the hatched area 50 in FIGS. 10C and 11C for the same reason as in the case of the frontage direction X described above. Therefore, in the basic unit pattern shape C, the antenna pattern portion (that is, the first pattern portion 35, the base line portion 43, and the connecting portion 48) extending in the front opening direction X has the Xz plane. Are substantially parallel to one another so that the width in the depth direction y of the non-communicable area of the basic unit pattern shape C with respect to the electronic tag 19 placed parallel to the plane is as constant as possible along the direction X of the frontage. Is preferred. However, the antenna pattern portions 35, 43, 48 may be inclined to the same degree as in the case of the predetermined angle which is not necessarily parallel to each other.

(3) Specific Pattern Shape of Antenna for Reader / Writer

The reader / writer antenna 15 has the basic unit pattern type described in the above (2). It is configured by combining and arranging first and second antennas A and B having antenna pattern shapes 31 and Z substantially the same as shape C and antenna pattern shape 31 similar to Z, respectively. Then, the first and second antennas A, B, the first dotted line regions 49 where the magnetic field components in the front opening direction X weaken are arranged alternately without overlapping each other. And second antennas A and B are arranged respectively. Next, such an arrangement example is divided into “(A) arrangement example 1”, “) arrangement example 2”, “(arrangement example 3)”, and description will be made with reference to FIGS. 12 to 22. Do.

(A) Arrangement Example 1

An antenna 15 for a reader / writer shown in FIG. 12C as an arrangement example 1 is an arrangement in which a first antenna A shown in FIG. 12A and a second antenna B shown in FIG. 12B are combined. Since the first antenna A shown in FIG. 12A has the same antenna pattern shape as the basic unit pattern shape C shown in FIG. 10A, the hatched area of the basic unit pattern shape shown in FIG. It has the same hatched area 49a as 49. Also, the second antenna B shown in FIG. 12B has a substantially loop-shaped antenna pattern 31 substantially identical to the basic unit pattern shape C shown in FIG. 1A (in other words, the first antenna A). , And only the positions of the pair of terminal portions 32a and 32b differ from the basic unit pattern shape C (in other words, the first antenna A) shown in FIG. 10A. For this reason, the second antenna B shown in FIG. 12B is also substantially the same as the hatched area 49 of the basic unit pattern shape C shown in FIG. 10A (in other words, the hatched area 49a of the first antenna A). The hatched area 49b of Therefore, the first antenna A and the second antenna B have antenna pattern shapes similar to each other as a whole.

An antenna 15 for a reader / writer is configured by arranging the first and second antennas A and B in combination with each other as shown in FIG. 12C. In this combination, the second antenna B, as shown in FIG. 12C, is approximately 1Z2 (that is, approximately 1Z2) in the frontal direction X relative to the first antenna A (see FIG. 10A). 0.5 L and shown

4 4

In the embodiment, they are disposed on the left side by about 75 mm) and are not placed in the depth direction y. Therefore, the above description of the basic unit pattern shape C only applies to the first antenna A as well. The same applies to the second antenna B, except for changes resulting from the different positions of the pair of terminal portions 32a, 32b. The first antenna A and the second antenna B have longitudinal overlapping portions 51 to 56 which overlap each other in the vertical direction z. When the second antenna B is shifted in the frontal direction X with respect to the first antenna A, whether it is shifted to the left or to the right, the performance of the reader / writer antenna 15 is substantially equivalent. In the text, the "overlap" (that is, the overlap between pattern portions) does not overlap in a state of being electrically connected to each other, but the antenna forming target members such as the shelf boards 6 and 11 to 14 are It means that the upper surface force is also overlapped (in other words, viewed in a plane) on the projection that is seen.

In the case of the reader / writer antenna 15 shown in FIG. 12C, a hatched area 49a in the front direction X for the first antenna A and a hatched area 49b in the front direction X for the second antenna B. Is approximately equally spaced (in other words, approximately 0.5 L, as shown in FIG. 13A).

It alternates at four intervals). FIG. 13B shows a modification 1 of the antenna 15 for a relay writer shown in FIG. 13A (in other words, FIG. 12C). The distance between the second antenna B and the first antenna A is about 0.5 L (in the illustrated embodiment, about 37.5 mm). Except in Figure 13).

Four

The configuration is substantially the same as that of the reader / writer antenna 15 shown in FIG. In this case, the oblique line area 49a and the oblique line area 49b are staggered as shown in FIG. 13B, but the intervals between them are not even equal to each other.

In the case of the reader / writer antenna 15 shown in FIG. 13A and FIG. 13B, the weakly hatched area 49a of the weakly magnetic field component of the magnetic field component in the front direction X by one of the first and second antennas A and B. 49b Force Compensated by the other antenna. Therefore, the area in which the reader / writer antenna 15 can not communicate with the electronic tag 19 placed parallel to the y-z plane is eliminated. In the case of the reader / writer antenna 15 shown in FIG. 13C as a reference example, the antenna pattern 31 of the substantially loop shape of the first antenna A, and the antenna pattern 31 of the substantially loop shape of the second antenna B and the force. They almost completely overlap each other. Accordingly, in the case of the reader / writer antenna 15 shown in FIG. 13C, it is similar to the case of the first antenna A alone shown in FIG. 12A and the second antenna B alone shown in FIG. 12B. Unreachable area 49 occurs.

In the second group invention of the present invention, an induction is generated in the other antenna in response to the magnetic field generated when power is supplied to one of the first and second antennas A and B. It is preferred that the value of the current be increased to some extent. For this reason, the direction of the induced current of the entire first antenna A or the entire second antenna B is the closest overlapping portions 51 to 56 of the first and second antennas A and B or the closest to each other. It is preferable to arrange the first and second antennas A and B so as to correspond to the direction of the induction current generated at the longitudinal proximity site.

For example, in the case of the reader / writer antenna 15 shown in FIG. 12C, when the first antenna A is fed in the direction of the solid line in FIG. 14A (or the opposite direction), the first and second The induction current generated in the second antenna B at the longitudinal overlapping portions 51 to 56 of the antennas A and B is a broken line opposite to the direction of the solid arrow in FIG. 14A (or the opposite direction). The direction of the arrow (or the opposite direction). Further, in the case of the reader / writer antenna 15 shown in FIG. 13B, an antenna pattern portion extending in the depth direction y of the second antenna B (that is, the second and fourth pattern portions 37, 41 and the fourth The direction of the induced current generated in the first and second rising portions 46, 47) is the first antenna A close to and substantially parallel to the antenna pattern portions 37, 41, 46, 47 of the second antenna B. Antenna pattern portions (ie, the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47) are also induced and the common current direction shown by the broken arrows in FIG. 14B. become. The direction indicated by the broken arrow in FIG. 14B coincides with the flow direction indicated by the broken arrow of the induction current at the longitudinal overlapping portions 51 to 56 shown in FIG. 14A. Note that FIG. 14C shows the case where the first and second antennas A and B are shifted in the front-rear direction X to the left and right as compared with the case of FIG. 14B. Also in the case of FIG. 14C, the flow direction of the induction flow indicated by the broken arrow is substantially the same as the case of FIG. 14B.

Further, in FIG. 15A, with respect to the first antenna A in the reader / writer antenna 15 shown in FIG. 12C, the second antenna B is spaced approximately 1Z4 in the depth direction y (ie, approximately 1Z4).

Five

(Approximately 45 mm) in the illustrated embodiment.

Five

The reader / writer antenna 15 is shown. In this case, the first and second en Weakly shaded areas of the magnetic field components in the depth direction y for tena A, B 50 forces can be made not to overlap each other. Therefore, the weak one of the magnetic field components in the depth direction y in one of the first and second antennas A and B is compensated by the other antenna in the oblique region 50 power. Further, in the case of the reader / writer antenna 15 shown in FIG. 15A, as shown in FIG. 15B, the first and second antennas A and B force mutually overlap in the vertical direction z at the longitudinal overlapping portions 61 and 62. doing. Also in this case, as shown in FIG. 15C, the directions of the induced current at the longitudinal overlapping portions 61, 62 can be made to coincide with each other as shown by the broken arrows.

Also, in FIG. 16A, with respect to the first antenna A in the reader / writer antenna 15 shown in FIG. 13B, the second antenna B is spaced approximately 1Z4 in the depth direction y (ie, approximately 1Z4)

Five

0.25 L, and in the illustrated embodiment, it is offset by about 45 mm)

Five

The reader / writer antenna 15 is shown. Also in this case, the weakly hatched regions 50 of the magnetic field components in the depth direction y of the first and second antennas 8 and B can be made not to overlap each other. Therefore, the weakly hatched area 50 of the magnetic field component in the depth direction y in one of the first and second antennas A and B is compensated by the other antenna. Also in this case, as in the case shown in FIG. 16B, which is a modification of FIG. 16A, the directions of the induced current are made to coincide with each other as indicated by the broken arrows in the longitudinal overlapping portions 61 and 62 and the longitudinal adjacent portions. be able to. In the reader / writer antenna 15 shown in FIG. 16B, the second antenna B is approximately 0.75 L in the frontal direction X with respect to the first antenna A.

4 Shift it to the right and place it.

(B) Arrangement Example 2

The antenna 15 for the reader / writer shown in FIG. 17 as the arrangement example 2 is a virtual center line of the substantially loop-shaped antenna pattern 31 of the first antenna A shown in FIG. 12A and the second antenna B shown in FIG. In the case of FIG. 12C, the second antenna B, which is an antenna inverted in the depth direction y centering on 45 (in other words, the second antenna B and the antenna in line symmetry with the center line 45 as the axis of symmetry) In the same manner as in, it is arranged in combination. The first antenna A and the second antenna B have longitudinal overlapping portions 63 to 68 which overlap each other in the vertical direction z, as shown in FIG. In the case of the reader / writer antenna 15 shown in FIG. 17, the hatched area 49 a in the front direction X for the first antenna A and the hatched area 49 b in the front direction X for the second antenna B are As shown in FIG. 18A, they alternate at roughly equal intervals. FIG. 18B shows a modified example 1 of the reader / writer antenna 15 shown in FIG. The reader / writer antenna 15 shown in FIG. 18B is the reader shown in FIG. 18A except that the distance between the second antenna B and the first antenna A is approximately 0.25 L. lighter

Four

It has substantially the same configuration as the antenna 15. In this case, the diagonally shaded area 49a and the diagonally shaded area 49b alternate in force as shown in FIG. 18B. These intervals are not even equal to each other.

In the case of the reader / writer antenna 15 shown in FIGS. 18A and 18B, the weakly hatched area 49a of the magnetic field component in the front direction X by the antenna of one of the first and second antennas A and B. 49b Force Compensated by the other antenna. Therefore, the area where the reader / writer antenna 15 can not communicate with the electronic tag 19 parallel to the y-z plane is eliminated. In the case of the reader / writer antenna 15 shown in FIG. 18C as a reference example, the substantially loop shaped antenna pattern 31 of the first antenna A and the substantially loop shaped antenna pattern 31 of the second antenna B are provided. , Except for a part (especially, in a pattern portion extending in the substantially depth direction y), almost completely overlap each other. Therefore, in the case of the reader / writer antenna 15 shown in FIG. 18C, the incommunicable area 49 similar to the case of the first antenna A alone shown in FIG. 12A and the second antenna B alone shown in FIG. , Occur.

In the case of the reader / writer antenna 15 shown in FIG. 17, when the first antenna A is fed in the direction of the solid arrow in FIG. 19A (or the opposite direction), the first and second The induced current generated in the second antenna B at the longitudinal overlapping portions 63 to 68 of the antennas A and B is opposite to the direction of the solid arrow in FIG. 19A (or the reverse direction thereof). Orientation (or vice versa). Further, in the case of the reader / writer antenna 15 shown in FIG. 18B, the longitudinal overlapping portions 63 to 68 of the first and second antennas A and B and the longitudinal proximity portions of the first and second antennas A and B The direction of the induction current generated in the direction is the direction shown by the broken arrow in FIG. 19B. And this longitudinal proximity part The direction indicated by the broken arrow of the induced current at the point in the figure coincides with the direction indicated by the broken arrow of the induced current at the longitudinal overlapping portions 63 to 68. In FIG. 19C, the way of shifting the first and second antennas A and B in the frontal direction X is shown in the case where it is reversed from the case of FIG. 19B. Also in the case of FIG. 19C, the flow direction of the induction current indicated by the broken arrow is substantially the same as the case of FIG. 19B.

(C) Arrangement Example 3

In the antenna 15 for the reader / writer shown in FIG. 20 as the arrangement example 3, the first pattern portion 35 of the first antenna A and the first pattern portion 35 of the second antenna B are the base of the second antenna B. The first antenna A and the second antenna B are combined with each other so that the overlapping portions 63 to 68 (see FIG. 17) overlapping the line portion 43 and the base line portion 43 of the first antenna A are eliminated. Are arranged. In this case, as shown in FIG. 20, the first antenna A and the second antenna B have longitudinal overlapping portions 71 to 74 overlapping each other in the vertical direction z.

In the case of the reader / writer antenna 15 shown in FIG. 20, the hatched area 49 a in the front direction X for the first antenna A and the hatched area 49 b in the front direction X for the second antenna B are As shown in FIG. 21A, they alternate at roughly equal intervals. FIG. 21B shows a modified example 1 of the reader / writer antenna 15 shown in FIG. The reader / writer antenna 15 shown in FIG. 21B is the reader shown in FIG. 21A except that the distance between the second antenna B and the first antenna A at the left side is approximately 0.25 L. lighter

Four

It has substantially the same configuration as the antenna 15. In this case, the diagonal areas 49a and the diagonal areas 49b are alternating forces as shown in FIG. 21B.

In the case of the reader / writer antenna 15 shown in FIGS. 21A and 21B, the weakly shaded area 49a of the weakly magnetic field component of the magnetic field component in the frontal direction X by one of the first and second antennas A and B. 49b Force Compensated by the other antenna. Therefore, the reader / writer antenna 15 is placed parallel to the y-z plane, and the area incapable of communicating with the electronic tag 19 is eliminated. In the case of the reader / writer antenna 15 shown in FIG. 21C as a reference example of the reader / writer antenna 15 shown in FIG. 20, the substantially loop shape of the first antenna A is used. The second and fourth pattern portions 37 and 41 and the first and second rising portions 46 and 47 of the antenna pattern 31 and the second and fourth patterns of the substantially loop-shaped antenna pattern 31 of the second antenna B The portions 37, 41 and the first and second rising portions 46, 47 almost completely overlap one another, except in part. Therefore, in the case of the reader / writer antenna 15 shown in FIG. 21C, the incommunicable area 49 similar to the case of the first antenna A alone shown in FIG. 12A and the second antenna B alone shown in FIG. Do.

In the case of the reader / writer antenna 15 shown in FIG. 20, when the first antenna A is fed in the direction of the solid arrow in FIG. 22A (or the opposite direction), the first and second The induced current generated in the second antenna B at the longitudinal overlapping portions 71 to 74 of the antennas A and B is opposite to the direction (or the opposite direction) of the solid arrow in FIG. 22A. The direction of the dashed arrow (or the opposite direction). Further, in the case of the reader / writer antenna 15 shown in FIG. 22B as a second modification of the reader / writer antenna 15 shown in FIG. 20, the longitudinal overlapping portions 71 to 74 of the first and second antennas A and B and The direction of the induced current generated at the longitudinal proximity of the first and second antennas A and B is the direction indicated by the broken arrow in FIG. 22B. The direction indicated by the broken arrow of the induced current at the longitudinal adjacent portion coincides with the direction indicated by the broken arrow of the induced current at the longitudinal overlapping portions 71 to 74. In the case of the reader / writer antenna 15 shown in FIG. 22C as a third modification 3 of the reader / writer antenna 15 shown in FIG. 20, the first and second antennas A and B shift in the direction X of the front opening It is reversed from the case of Fig. 22B. Also in the case of FIG. 22C, the flow direction of the induction current indicated by the broken arrow is substantially the same as in the case of FIG. 22B.

In the reader / writer antenna 15 of this arrangement example 3, the length of the shelf board 11 of the substantially loop shaped antenna pattern 31 of the second antenna B with respect to the substantially loop shaped antenna pattern 31 of the first antenna A. When considering the amount of deviation in the direction (specifically, the frontage direction X), there are four types described in the following (a) to (d).

(a) Amount of deviation of the second antenna B relative to the first antenna A = 0 (in the case of FIG. 21C),

(b) Amount of deviation of the second antenna B relative to the first antenna A 0.5 L (in the case of FIG. 21B) (c) Amount of deviation of the second antenna B relative to the first antenna A = 0.5 L (FIG. 20, FIG. 21A

Four

And Figure 22A), and

(d) Amount of deviation of the second antenna B relative to the first antenna A> 0.5 L (FIG. 22B and

Four

In the case of Figure 22C).

When arranging the first antenna A and the second antenna B in combination with each other (in other words, overlapping each other), the shelf board for the first and second antennas A and B 6 The magnetic field components in the length direction (specifically, frontal direction X) of the antenna formation target member such as 11 to 14 and in the width direction (specifically, depth direction y) depending on the case may become weak. The first antenna A and the second antenna are arranged such that the dashed line regions 49a, 49b, 50 are arranged differently as shown in FIGS. 21A and 21B without overlapping each other as shown in FIG. 21C. It is preferable to arrange B and B respectively. In the case where the length direction and the width direction are substantially equal to each other, one of these two directions can be selected as the length direction X. Further, in order to cause the induced current shown in FIG. 22C to flow in one direction in the first antenna A or the second antenna B, one of the antenna patterns 31 of the first and second antennas A and B is used. It is preferable that the overlapping portions of the respective antenna pattern portions (in particular, the base line portion 43 and the connecting portion 48) extending in the longitudinal direction X or the portion force close to each other be as long as possible.

[0139] To make the magnetic field components in the longitudinal direction X of the first and second antennas A and B weaken each other in the dotted line regions 49a and 49b forces are arranged alternately without overlapping each other. The amount of deviation described in the items (a) to (d) is in the range of 0.25 L to 0.65 L.

More preferably, it is in the range of 0.3 L to 0.5 L. In addition, the above

4 4

When the deflection amount deviates from the above range force, the weak region of the magnetic field component in the length direction X extending along the width direction y of the reader / writer antenna 15 becomes remarkable. In addition, the dotted lines 49a and 49b where the magnetic field components in the longitudinal direction X weaken in the first and second antennas A and B are arranged so as to be alternately arranged without overlapping each other. In order to make the induction current flow in one direction in the first or second antenna A, B, the deviation amount described in the above (a) to (d) is: 0. 45 L range or 0. 55 L

4 4 4

It is preferably in the range of ̃0.65 L. In addition, the matters described in the above items (a) to (d) The items described so far (including these four numerical ranges) apply not only to the layout example 3 in this first embodiment but also to the layout examples 1 and 2 described above. The same applies to various arrangements of the second and third embodiments described later of the second group invention.

(4) Feeding Method of Reader / Writer Antenna

When feeding one of the first and second antennas A and B, it is easy for the induced current generated in the other antenna to flow only in the negative direction (in other words, the common current direction) In addition, when the first and second antennas A and B are disposed in combination, the reader / writer antenna 15 can be favorably exchanged with the electronic tag 19 only by feeding power to only one of the antennas. However, by feeding power to the first and second antennas A and B alternately, the antenna 15 for the reader / writer can be well communicated in a more stable state.

Second Embodiment Second Embodiment of the Invention

In the second group invention of the present invention, the shapes and the like of the antenna patterns 31 of the first and second antennas A and B constituting the reader / writer antenna 15 provided on the shelf boards 6 and 11 to 14 are Various modifications and variations are possible, as illustrated by the second embodiment shown in FIGS. 23 to 30 which are not limited to those of the first embodiment shown in FIGS. Therefore, in the following, the second embodiment of the second group invention of the present invention is described in "(1) Basic unit pattern shape of antenna for reader / writer", "(2) Concrete pattern shape of antenna for reader / writer". The description will be given with reference to FIG. 23 to FIG. 30 by dividing the item into “(3) feeding method to the reader / writer antenna” and “(4) operation experiment of the reader / writer antenna”. The shelf board 11 in the second embodiment shown in FIGS. 23 to 30 is substantially the same as the shelf board 11 in the above-mentioned first embodiment shown in FIGS. 9 to 22 except for the points described below. May have the same configuration. Accordingly, in FIG. 23 to FIG. 30, the same reference numerals are attached to the same parts as in FIG. 9 to FIG. 22, and the explanation thereof will be omitted as necessary. Also, in the following description, only the shelf 11 will be described. The remaining shelves 6, 12-14 may have substantially the same configuration as the shelf 11 !, and the same configuration You don't have to.

(1) Basic unit pattern shape of antenna for reader / writer A basic unit pattern shape C of the first and second antennas A and B which constitute the antenna 15 for a radar writer shown in FIG. 24 is shown in FIG. 23A. This basic unit pattern shape C is substantially the same as the pattern shape of the first antenna A shown in FIG. The antenna pattern 31 of the basic unit pattern shape C has a first substantially loop shaped antenna pattern 31a and a second substantially loop shaped antenna pattern 31b. The first substantially loop-shaped antenna pattern 3 la and the second substantially loop-shaped antenna pattern 3 lb are connected to each other at the upper and lower two points at the intersection 81. The upper and lower two connection points should be insulated by an insulating layer made of an appropriate insulating material.

As shown in FIG. 23A, the first substantially loop-shaped antenna pattern 31a has a first pattern portion 35 in which the terminal portions 32a are continuously provided and located on the rear edge 34 side of the shelf board 35. And a second pattern portion 37 located on the side of the left edge 36 of the shelf 11 and a third pattern portion 39 located on the front edge 38 of the shelf 11 and a terminal portion And a fourth pattern portion 41 located on the side of the edge 40 on the right side of the shelf plate 11 with the second plate portion 32b connected in series, in the vicinity between the third pattern portion 39 and the fourth pattern portion 41. It may be provided one after another except for the crossing point 81. The first antenna pattern 31a may be configured in a loop shape as a whole, except for the gap 33 and the intersection portion 81.

[0144] The first pattern portion 35 of the first substantially loop-shaped antenna pattern 31a is close to the rear edge 34 of the shelf plate 11 and substantially parallel to the rear edge 34 of the bracket, as shown in FIG. 23A. In the state, it extends over almost the entire length of the shelf board 11. The second pattern portion 37 is close to the left edge 36 of the shelf 11 and is substantially parallel to the left edge 36 of the bracket, and only in the depth direction y around the rear edge 34 of the shelf 11 About 1 of length L (see Figure 12C)

2

It extends for a length of Z6 (in other words, about L Z3). The fourth pattern part 41 is a shelf board

Four

11 parallel to the right edge 40 of the bracket slightly away from the right edge 40, the length of the shelf board 11 in the depth direction y of about 1Z3 (in other words, about 2L Z3) Length of

Extend approximately half of the back of the shelf 11 at 2 4.

The third pattern portion 39 of the first substantially loop-shaped antenna pattern 31a is, as shown in FIG. 23A, substantially along the shelf centerline 45 of the shelf 11 and between them. Between A plurality of baseline portions 43 extending intermittently so as to cause the missing portion 42 and a plurality of these baseline portions 43 extending intermittently or a baseline portion 43 and a second Between the pattern part 37 and the! /, The bending part 44 and the strength part! The remaining bent portions 44 except for the left bent portion 44a are connected at their proximal ends to the right end of the left baseline portion 43, and the rear end of the shelf plate 11 is fixed. The base end portion of the first rising portion 46 rising toward the end portion and the base end portion of the right side of the baseline portion 43 toward the right side are continuously connected and the trailing edge of the shelf plate 11 It extends substantially parallel to the frontal direction X so as to connect the second rising portion 47 rising to the portion 34 and the tips of the first and second rising portions 46 and 47 respectively. It may also consist of existing connections 48 and force. Each of the bent portions 44 is preferably a generally rectangular convex portion as a whole. Further, the left bent portion 44a is connected at its base end to the left end of the right baseline portion 43 and is directed to the rear edge 34 of the shelf 11 in a standing manner. It extends substantially parallel to the frontal direction X so as to connect the second rising portion 47 and the front end of the second rising portion 47 with the front end of the second pattern portion 37. It may be composed of the connecting part 48. The bent portion 44 may be a generally L-shaped corner-shaped portion as a whole.

The second substantially loop-shaped antenna pattern 31b is, as shown in FIG. 23A, a first pattern portion 35 located on the rear edge 34 side of the shelf 11 and a left edge of the shelf 11 with a force. The second pattern portion 37 located on the side of the portion 36, the third pattern portion 39 located on the side of the front edge 38 of the shelf 11, and the side of the edge 40 on the right side of the shelf 11. The fourth pattern portion 41 and the force located in the vicinity of the first pattern portion 35 and the fourth pattern portion 41, except for the intersection 81 in the vicinity, are sequentially provided in a row. Good. And, this first pattern portion 35 may be configured in a loop shape as a whole, except for the intersection portion 81. The rear end portion of the fourth pattern portion 41 of the second antenna pattern 31b is connected to the second rising portion 47 of the bending portion 44 on the right side of the first antenna pattern 31a at the intersection portion 81. It is set up. In addition, the right end of the first pattern portion 34 of the second antenna pattern 31b is an intersection 81 at the right end of the third pattern portion 39 of the first antenna pattern 31a. Thank you so much! [0147] The second pattern portion 37 of the second substantially loop-shaped antenna pattern 31b is close to the left edge 36 toward the shelf board 11 and the left edge 36 of the bracket as shown in FIG. 23A. In a substantially parallel state, the shelf board 11 is a shelf board 1 with a length of about 1Z3 with a length L of y in the depth direction 1

2

It extends approximately half of the front side of 1. The third pattern portion 39 extends over substantially the entire length of the shelf 11 adjacent to the front edge 38 of the shelf 11 and generally parallel to the front edge 38 of the bracket. The fourth pattern portion 41 is approximately 1Z3 of the length L of the shelf board 11 in the depth direction y with a direction substantially parallel to the right edge 40 of the bracket at a distance from the facing right edge 40 of the shelf 11. (In other words, approximately 0.67 L) and extend approximately half of the front side of the shelf board 11 by a length of

twenty four

It exists.

[0148] As shown in FIG. 23A, the first pattern portion 35 of the second substantially loop-shaped antenna pattern 31b has the intermittent portion 42 between each other substantially along the shelf centerline 45. A plurality of base line portions 43 extending intermittently so as to occur and a bending portion 44 extending between these plurality of base line portions 43 extending intermittently. And power. Each of the bent portions 44 has its proximal end connected to the end on the right side toward the baseline portion 43 on the left side and is raised to the front end 38 of the shelf board 11. The base end portion of the rising portion 46 of 1 and the base end portion of the baseline portion 43 of the right side toward the left end is directly connected to the front end portion 38 of the shelf board 11. And a connecting portion 48 extending substantially parallel to the frontal direction X so as to connect the front end portions of the first and second rising portions 46 and 47 to each other. You may Each of the bent portions 44 is preferably a substantially rectangular convex portion as a whole.

In the basic unit pattern shape C shown in FIG. 23A, the base line portion 43 of the third pattern portion 39 of the first substantially loop shaped antenna pattern 31a and the second substantially loop shaped antenna The baseline portions 43 of the first pattern portion 35 of the pattern 31 b extend alternately on the shelf centerline 45 so as to be generally in a straight line as a whole. In other words, the base line portion 43 of the second substantially loop shaped antenna pattern 3 lb is disposed in the intermittent portion 42 of the first substantially loop shaped antenna pattern 31a. In addition, the base line portion 43 of the first substantially loop shaped antenna pattern 31 b is disposed in the intermittent portion 42 of the second substantially loop shaped antenna pattern 31 b. And the first The distance between the first pattern portion 35 of the substantially loop shaped antenna pattern 31a and the shelf centerline 45 in the depth direction y is the first pattern portion 35 of the second substantially loop shaped antenna pattern 31b and the shelf center It is substantially the same as the distance between the line 45 and the depth direction y. Therefore, the shelf centerline 45 doubles as an imaginary centerline extending in the frontal direction X of the basic unit pattern shape C.

A characteristic of the basic unit pattern shape C shown in FIG. 23A is that the magnetic field component force in the front direction X parallel to the surface of the shelf plate 11 changes substantially periodically according to the position along the front direction X. In FIG. 23B, the shaded area 49 tends to be weak. This is due to the magnetic field component force in the direction of the mouth x caused by the antenna pattern portions (ie, the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47) extending in the depth direction y. This is because it becomes smaller at the middle position between these adjacent antenna pattern portions. Therefore, in the basic unit pattern shape C alone shown in FIG. 23A, the hatched area is such that the electronic tag 19 (see FIG. 4) is parallel to the y-z plane (z is the direction perpendicular to the surface of the shelf board 11). When placed at 49, the reader / writer antenna 15 (in other words, the basic unit pattern shape C shown in FIG. 23A) may be able to communicate with the electronic tag 19.

As described above, when the reader / writer antenna 15 communicates with the electronic tag 19 placed parallel to the y-z plane, the force of each antenna pattern of the reader / writer antenna 15 is also emitted. The component in the direction of the frontage X is affecting. Therefore, it is preferable that the antenna pattern portion extending substantially in the depth direction of the antenna 15 extend substantially perpendicular to the frontal direction X. However, as in the case of the inclination angle 示す shown in FIG. 11A, it may have some inclination angles. Also, antenna pattern portions extending in the depth direction y (that is, the second and fourth pattern portions 37, 41 of the first and second antenna patterns 31a, 31b and the first and second rising portions 46) , 47) antenna pattern parts adjacent to each other have a basic unit pattern shape for the electronic tag 19 placed parallel to the y-z plane. Preferred to be nearly parallel to each other as constant as possible along y! /.

FIG. 23B shows the magnetic field component in the direction of the frontage X parallel to the surface of the shelf board 11 for the basic unit pattern shape C shown in FIG. 23A, while FIG. 23C shows it in FIG. 23A. Basic A magnetic field component in the direction of depth y parallel to the surface of the shelf board 11 for the unit pattern shape C is shown. The magnetic field component in the depth direction y parallel to the surface of the shelf 11 also tends to be weak in the hatched area 50 in FIG. 23C for the same reason as in the case of the above-mentioned direction X of the mouth. Therefore, antenna pattern portions extending in the frontal direction X in the basic unit pattern shape C (ie, the first pattern portions 35 of the first and second antenna patterns 31a, 31b, the baseline portion 43, and the like). The connecting portion 48) has a width in the depth direction y of the incommunicable area of the basic unit pattern shape C with respect to the electronic tag 19 placed parallel to the x-z plane as constant as possible along the frontal direction X. Preferably, they are approximately parallel to one another. However, the antenna pattern portions 35, 43, 48 need to be substantially parallel to each other, but may be inclined to each other as in the case of the predetermined angle な.

(2) Specific Pattern Shape of Antenna for Reader / Writer

The reader / writer antenna 15 has an antenna pattern shape 31 and a Z or similar antenna pattern shape substantially the same as the basic unit pattern shape C described in the item (1) (ie, the item B2 (l)). The first and second antennas A and B, respectively, are arranged in combination with each other. Then, the first and second dotted lines 49 of the first and second antennas A and B where the magnetic field components in the frontal direction X weaken are arranged alternately without overlapping each other. The antennas A and B are respectively arranged. Next, such an arrangement example will be described with reference to FIGS. 24 to 28.

The reader / writer antenna 15 shown in FIG. 24 has a first antenna A identical to the basic unit pattern shape C shown in FIG. 23A, and a second antenna A similar to the basic unit pattern shape C shown in FIG. 23A. The antenna B is disposed in combination with each other. The first antenna A has the same pattern shape as the basic unit pattern shape C shown in FIG. 23A. Therefore, the first antenna A has substantially the same hatching as the hatched region 49 of the basic unit pattern shape C shown in FIG. It has an area. Also, the second antenna B has an antenna pattern 31 having a substantially loop shape, which is substantially the same as the basic unit pattern shape C shown in FIG. 23A (in other words, the first antenna A). , The force of the pair of terminal portions 32a and 32b by the length of the basic unit pattern shape C (in other words, the first antenna A) shown in FIG. 23A. is there. For this reason, the second antenna B also has a hatched area substantially the same as the hatched area 49 of the basic unit pattern shown in FIG. 23B (in other words, the hatched area of the first antenna A). . Therefore, the first antenna A and the second antenna B have antenna pattern shapes (ie, antenna patterns 31) substantially identical to each other.

An antenna 15 for a reader / writer is configured by arranging the first and second antennas A and B in combination with each other as shown in FIG. In this combination, as shown in FIG. 24, the second antenna B is approximately 1Z2 (that is, approximately 0) of the distance L (see FIG. 10A) in the frontal direction X with respect to the first antenna A. 5 L, and the actual

In the fourth embodiment, they are disposed on the left side by about 75 mm) and not in the depth direction y. Therefore, the basic unit pattern shape This explanation of the present invention is applied to the first antenna A as well, except for the change caused by the difference in length of the pair of terminal portions 32a, 32b. The same applies to the second antenna B. The first antenna A and the second antenna B have longitudinal overlapping portions 82 to 89 overlapping each other in the vertical direction z. In addition, when the second antenna B is shifted in the frontal direction X with respect to the first antenna A, the performance of the reader / writer antenna 15 is substantially equivalent regardless of whether it is shifted to the left or to the right.

In the case of the reader / writer antenna 15 shown in FIG. 24, the hatched area 49 a in the front direction X for the first antenna A and the hatched area 49 b in the front direction X for the second antenna B are , Approximately equally spaced (in other words, approximately L), as shown in FIG. 25A.

4 Z2 interval

Alternate). FIG. 25B shows a modified example 1 of the reader / writer antenna 15 shown in FIG. In the reader / writer antenna 15 shown in FIG. 25B, the spacing force at which the second antenna B is shifted to the left with respect to the first antenna A is approximately 0.25 L.

Four

In the above, the configuration is substantially the same as that of the reader / writer antenna 15 shown in FIG. 25A except that it is approximately 37.5 mm. In this case, the hatched area 49a and the hatched area 49b are staggered as shown in FIG. 25B, but their spacings are not nearly equal to one another.

In the case of the reader / writer antenna 15 shown in FIGS. 25A and 25B, the first and second The weakly hatched area 49a or 49b of the magnetic field component in the frontal direction x by one of the antennas A and B is compensated by the other antenna. Therefore, the reader / writer antenna 15 is placed parallel to the y-z plane to eliminate the area power incapable of communicating with the electronic tag 19. In the case of the reader / writer antenna 15 shown in FIG. 25C as a reference example of the reader / writer antenna 15 shown in FIG. 24, the antenna pattern 31 of the first antenna A and the antenna pattern 31 of the second antenna B Forces almost completely overlap each other. Therefore, in the case of the reader / writer antenna 15 shown in FIG. 25C, the incommunicable areas 49a and 49b are similar to the case of the first antenna A alone and the second antenna B alone shown in FIG. 25A. Occur.

In the second group invention of the present invention, an induction is generated in the other antenna in response to a magnetic field generated when power is supplied to one of the first and second antennas A and B. Preferably, the value of the current is increased. For this purpose, the direction of the induced current of the entire first antenna A or the entire second antenna B, and the longitudinal multiple portions 82 to 89 of the first and second antennas A and B or the closest longitudinal ones. It is preferable to arrange the first and second antennas A and B so as to match the direction of the induced current generated at the proximity site.

For example, in the case of the reader / writer antenna 15 shown in FIG. 24, when the first antenna A is fed in the direction of the solid arrow in FIG. 26A (or the opposite direction), the first and The induction current generated in the second antenna B at the longitudinal overlapping portions 82 to 89 of the two antennas A and B is a broken line which is opposite to the direction of the solid arrow in FIG. 26A (or the opposite direction). The direction of the arrow (or the reverse). Also, in the case of the antenna 15 for the reader / writer shown in FIG. 25B, the antenna notched portion extending in the depth direction y of the second antenna B (ie, the second and fourth pattern portions 37, 41 and the first And the direction of the induced current generated in the second rising portion 46, 47) is the same as that of the first antenna A in the vicinity of and substantially parallel to the antenna pattern portions 37, 41, 46, 47 of the second antenna B. The antenna pattern portions (i.e., the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47) are also inductively directed in the direction shown by the dashed arrows in FIG. 26B. And the direction shown by the broken arrow in FIG. 26B coincides with the direction shown by the broken arrow of the induced current at the longitudinal overlapping portions 82 to 89 shown in FIG. 26A. Note that When the method of shifting the first and second antennas A and B in the direction of the opening X of the first and second antennas A and B is as shown in FIG. 26B. Is the opposite case. Also in the case of FIG. 26C, the direction indicated by the dashed arrow of the induced current is substantially the same as the case of FIG. 26B.

Further, the reader / writer antenna 15 shown in FIG. 27A as a modification 3 of the reader / writer antenna 15 shown in FIG. 24 is different from the first antenna A of the reader / writer antenna 15 shown in FIG. While shifting the second antenna B similarly in the front and back direction X in the same way in the reverse direction, the distance L is approximately 1Z4 in the depth direction y (that is, approximately 0.25 L, and the illustrated embodiment)

5 5

In the case of (22.5 mm), it was shifted to the front. In this case, since the longitudinal overlapping portions 82 to 88 in FIG. 24 are changed to the longitudinal proximity portions 82 to 88 as shown in FIG. 27A, the depths for the first and second antennas A and B are obtained. The weakly hatched areas 50 of the magnetic field components in the direction y do not overlap each other. Therefore, the weak or shaded area 50 of the magnetic field component in the depth direction y in one of the first and second antennas A and B is compensated by the other antenna. In this case, as in the case shown in FIG. 26A, the directions of the induced current at the longitudinal proximity sites 82 to 88 can be made to coincide with each other as shown by the broken arrows. 27B shows a fourth modification of the reader / writer antenna 15 shown in FIG. 24. In the reader / writer antenna 15 shown in FIG. 27A, the second antenna to the first antenna A is shown. The interval at which B is shifted to the right in the frontal direction X is approximately 0.33 L. The reader / writer antenna 15 shown in FIG. 27B

Four

In any case, the directions of the induced current at the longitudinal proximity sites can be matched to one another, as shown by the dashed arrows.

In the case of the reader / writer antenna 15 shown in FIG. 28A as Modification 5 of the reader / writer antenna 15 shown in FIG. 24, the first and second antennas A in the reader / writer antenna 15 shown in FIG. 27A B forces overlap each other in the vertical direction z at the longitudinal overlapping portions 91 to 95. In this case, as the sixth modification of the reader / writer antenna 15 shown in FIG. 24, as in the case of the reader / writer antenna 15 shown in FIG. 28B, the direction of the induced current at the longitudinal overlapping portions 91 to 95 and the longitudinal proximity portion , Can be matched to each other as shown by the dashed arrows. In the reader / writer antenna 15 shown in FIG. 28B, The first antenna A is offset to the left by approximately 0.75 L in the frontal direction X with respect to the second antenna B as well.

Four

(3) Method of supplying power to the reader / writer antenna

Also in the case of the second embodiment of the second group invention, as in the case of the first embodiment of the second group invention, only one of the first and second antennas A and B is fed. It is also possible to feed the first and second antennas A, B alternately.

(4) Operation experiment of antenna for reader / writer

FIG. 29 shows the electronic tag 19 provided on the article 18 shown in FIG. 9, the substantially loop-shaped antenna pattern 31 of the reader / writer antenna 15 provided on the shelf board 11 shown in FIG. Shows the relationship between In FIG. 29, the antenna pattern 31 extends substantially perpendicularly to the paper surface. The electronic tag 19 (see FIG. 4) used in the operation experiment shown in FIG. 29 has a lateral length L force of 3⁄45.6 mm and a longitudinal length L force of 4 mm.

8 9

O

The reader / writer antenna 15 shown in FIG. 27A used in the operation experiment shown in FIG. 29 has both the first and second substantially loop-shaped antenna patterns 31a and 31b and the pair of terminal portions 32a and 32b. At the intersections where the antenna patterns 31 of the first and second antennas A and B intersect, which are formed of copper wires with a diameter of 0.1 mm (ie, cross-sectional diameter), Insulated with resin film. The first and second antennas A and B of the reader / writer antenna 15 shown in FIG. 27A are arranged shifted in the front direction X and the depth direction y, respectively, so that longitudinal overlapping portions do not substantially occur. It was A resin film was interposed between the first and second antennas A and B to insulate them, and adhesive fixing was performed by sandwiching a pair of glass plates 23 and 24 from both sides (see FIG. 3).

In the operation experiment shown in FIG. 29, the first and second antennas A and B were alternately fed with a high frequency of 13.56 MHz, and the input power was 4 W. At the same time, the electronic tag 19 is arranged in a substantially constant direction (that is, any one of the XY plane, the XY plane and the y-z plane is substantially parallel to one surface) with respect to the surface of the shelf plate 11. It was moved in a substantially horizontal direction while maintaining a substantially constant distance from the surface of the brace, and it was judged whether or not the communication of the electronic tag 19 with the reader / writer antenna 15 was possible. Fig. 30A showing the evaluation results in the above operation experiment In FIG. 30B (parallel to the x-y plane), in FIG. 30B (parallel to the x-z plane) and in FIG. 30C (parallel to the yz plane), the above-mentioned communication can not be performed relatively well in the incommunicable area 102. The half tone is applied, and the communication coverage area 103 where the above communication is performed relatively well is not half tone. As shown in FIGS. 30A to 30C, in the antenna formation region where the reader / writer antenna 15 is formed, the electronic tag 19 for the reader / writer antenna 15 is used regardless of which direction the electronic tag 19 is placed. Communication was possible.

Third Embodiment of Third and Second Group Inventions

Next, according to a third embodiment of the second group invention of the present invention, “(1) Overall configuration of article placement shelf”, “(2) Basic unit pattern shape of antenna for reader / writer”, “(( 3) Specific pattern shapes of the reader / writer antenna, "(4) Feeding method to the reader / writer antenna" and "(5) effect of the reader / writer antenna" Explain while referring to. The shelf board 11 in the third embodiment shown in FIGS. 31 and 32 is substantially the same as the shelf board 11 in the first embodiment described above shown in FIGS. 9 to 22 except for the points described below. It may have the same configuration. Therefore, in FIG. 31 and FIG. 32, the same reference numerals as in FIGS. 9 to 22 denote the same parts, and a description thereof will be omitted as necessary. Further, in the following description, the force will be described specifically only for the shelf 11. The remaining shelf plates 6 and 12 to 14 may have substantially the same configuration as the shelf 11 or may be the same. It does not have to be a configuration.

(1) Overall configuration of the item placement rack

The shelf board 11 of the article placement shelf 1 in the third embodiment of the second group invention of the present invention is the shelf of FIG. 12C (that is, the arrangement example 1 of the first embodiment of the second group invention of the present invention). The length L in the fore-opening direction X with respect to the length L in the depth direction y is sufficiently large compared to the plate 11

twenty one

There is. This point is the same for the shelf boards 6 and 12 to 14 other than the shelf board 11 and for the top board 5, and the backboard 4 also has the same length in the frontal direction X. In this case, the length L is

2 The length L which may for example be about 350 mm and may be for example 1380 mm.

[0168] Between the pair of terminal portions 32a and 32b of the second antenna B functioning as a non-feed antenna of the two antennas A and B that constitute the reader / writer antenna 15, as shown in FIG. Semi-fixed capacitor to make a resonant circuit with non-powered antenna B A capacitor 161 for a resonant circuit such as a capacitor is connected. A matching adjuster 162 is connected between the pair of terminal portions 32a and 32b of the first antenna A that functions as a feeding antenna. The reader / writer main body 17 and the control computer 163 are sequentially connected to the matching adjuster 162!

(2) Basic unit pattern shape of antenna for reader / writer

The basic unit pattern shapes of the first and second antennas A and B which constitute the antenna 15 for a radar writer shown in FIG. 31 are described in the following items (a) to (f). Except for the point, it may be substantially the same as the basic unit pattern shape of each of the first and second antennas A and B constituting the reader / writer antenna 15 shown in FIG. 22B.

(a) The number of bent portions 44 of each of the first and second antennas A and B is increased from 2 to 5

(b) The lengths of the first pattern portion 35 of the first antenna A and the third pattern portion 39 of the second antenna B are considerably large,

(c) The lengths of the second and fourth pattern portions 37 and 41 of the first and second antennas A and B are slightly longer,

(d) The lengths of the base line portions 43 and the connection portions 48 of the first and second antennas A and B are somewhat smaller,

(e) the lengths of the first and second rising portions 46, 47 of the first and second antennas A, B are somewhat longer, and

(f) The pair of terminal portions 32a and 32b of the first antenna A is disposed near the edge 40 on the right side of the vicinity of the trailing edge 34 of the shelf 11 and the pair of the second antenna B Terminals 32a and 32b should be arranged near the rear edge 34 of the shelf 11 and near the left edge 36 of the shelf board.

(3) Specific Pattern Shape of Antenna for Reader / Writer

The reader / writer antenna 15 shown in FIG. 31 may be different from the reader / writer antenna 15 shown in FIG. 22B in the following points (g) and (h).

(g) The distance L between the first pattern portion 35 of the first antenna A and the connecting portion 48 of the first antenna A and the base line portion 43 of the second antenna B is relatively small. A baby , And

(h) The distance L between the third pattern portion 39 of the second antenna B and the connecting portion 48 of the second antenna B and the base line portion 43 of the first antenna A is relatively small. To be

In the case of the reader / writer antenna 15 shown in FIG. 32A as the reference example 1, the points described in the following items (i) to (k) are different from the reader / writer antenna 15 shown in FIG. 31. doing.

(i) almost completely overlapping the third pattern portion 39 of the second antenna B, except for the respective force portions of the base line portion 43 of the first antenna A;

(j) almost completely overlapping the first pattern portion 35 of the first antenna A, except for the respective force portions of the base line portion 43 of the second antenna B;

(k) The length L of each of the first and second rising portions 46 and 47 of the first and second antennas A and B should be somewhat short.

Five

In the case of the reader / writer antenna 15 shown in FIG. 32A, the first pattern portion 35 of the first antenna A, the base line portion 43 of the second antenna B, and the train of the first antenna A The distance L to the joint 48 is large. Further, the distance L between the third pattern portion 39 of the second antenna B and the base line portion 43 of the first antenna A and the connecting portion 48 of the second antenna B also increases. For this reason, in the case of the reader / writer antenna 15 shown in FIG. 32A, the magnetic field component force in the opening direction X parallel to the surface of the shelf board 11 tends to be weak in the hatched region 49 in FIG. 32A. Therefore, in the reader / writer antenna 15 shown in FIG. 32A, when the electronic tag 19 is placed parallel to the yz plane as shown in FIG. 32A, the reader / writer antenna 15 is placed in the hatched area 49. There is a risk that it will not be possible to communicate with the attached electronic tag 19. In other words, the hatched area 49 may become an incommunicable area where the reader / writer antenna 15 can not communicate with the electronic tag 19. To explain this point in detail, when the electronic tag 19 is a large size such as a card size electronic tag which is usually attached to the books 18a, the reader / writer antenna 15 can be mounted on the shelf board 11 as long as it is. Even if the magnetic field from the antenna for the dalighta 15 is relatively weak, it can communicate with the electronic tag 19 sufficiently. Therefore, the reader / writer antenna 15 has the depth direction y at a position slightly away from the electronic tag 19 even in the above-mentioned incommunicable area (that is, the hatched area 49). The magnetic field generated from the effective antenna pattern elements 37, 41, 46, 47 extending substantially along can substantially communicate with the electronic tag 19. However, the size of the electronic tag 19 attached to small articles such as jewelry is preferably sufficiently smaller than the above card size. When the size of the electronic tag 19 is thus sufficiently reduced, as described above, there is a possibility that the non-communicable area 49 in which the reader / writer antenna 15 can not communicate well with the electronic tag 19.

In order to correct such a defect of the reader / writer antenna 15 shown in FIG. 32A, in the case of the reader / writer antenna 15 shown in FIG. 32B as the reference example 2, the following items (1) to (o) 32A differs from the antenna 15 for a redirector writer shown in FIG.

(1) The baseline portion 43 of the first antenna A is shifted to some extent toward the rear edge 34 of the shelf board 11 with respect to the third pattern portion 39 of the second antenna B,

(m) The baseline portion 43 of the second antenna B is shifted to some extent toward the front edge 38 of the shelf board 11 relative to the first pattern portion 35 of the first antenna A,

(n) As a result described in the above (1) and (m), the baseline portion 43 of the first antenna A is connected to the connecting portion 48 of the second antenna B in the depth direction y of the shelf board 11 The two are disposed at substantially the same position, and for this reason, both are partially in the length direction (in other words, the front direction X) and almost completely in the width direction (in other words, the depth direction y). And let me

(o) As a result of the items (1) and (m), the base line part 43 of the second antenna B and the connecting part 48 of the first antenna A in the depth direction y of the shelf board 11 They were placed at almost the same position, and for this reason, both were partially overlapped in the length direction and almost completely overlapped in the width direction.

In the case of the reader / writer antenna 15 shown in FIG. 32B, between the trailing edge 34 of the shelf board 11 and the connecting portion 48 of the first antenna A and the baseline portion 43 of the second antenna B. In fact, effectively, only the first pattern portion 35 of the first antenna A extending in the frontal direction X is present, and an effective antenna pattern element extending in the depth direction y. (In other words, the first and second rising portions 46, 47) are not present. Also, between the front edge 38 of the shelf board 11 and the base line portion 43 of the first antenna A and the connecting portion 48 of the second antenna B, Essentially, only the third pattern portion 39 of the second antenna B extending in the frontal direction x is present, and an effective antenna pattern element extending in the depth direction y (in other words, The first and second rising portions 46, 47) are not present. For this reason, in the case of the reader / writer antenna 15 shown in FIG. 32B, the magnetic field component in the direction X of the frontage parallel to the surface of the shelf plate 11 tends to weaken in the hatched regions 49a and 49b in FIG. is there. In FIG. 33B, in the case where the first antenna A and the second antenna B are independent, respectively, FIGS. 12A and 12 B described in the item 1 (3) (ie, the item B1 (3)). Similarly to the case shown in FIG. 12B, the incommunicable areas 49a and 40b are also generated.

Therefore, in the reader / writer antenna 15 shown in FIG. 32B, when the electronic tag 19 is placed parallel to the y-z plane as shown in FIG. 32B, the reader / writer antenna 15 is hatched. Communication may not be possible with the electronic tags 19 placed in the areas 49a, 49b. In other words, the hatched areas 49 a and 49 b may become an incommunicable area where the reader / writer antenna 15 can not communicate with the electronic tag 19. More specifically, as described above, when the electronic tag 19 has a large size, if the reader / writer antenna 15 is placed on the shelf board 11, the magnetic field from the reader / writer antenna 15 is relatively large. Even near the weak rear end 34 and near the front end 38, communication with the electronic tag 19 can be sufficiently achieved. Therefore, the reader / writer antenna 15 extends substantially along the depth direction y at a position slightly away from the electronic tag 19 even in the incommunicable area (that is, hatched areas 49a and 49b). The magnetic field generated from the antenna pattern elements 37, 41, 46, 47 can sufficiently communicate with the electronic tag 19. However, as described above, when the size of the electronic tag 19 becomes sufficiently small, there is a possibility that the incommunicable areas 49a and 49b in which the reader / writer antenna 15 can not communicate well with the electronic tag 19 as described above.

On the other hand, in the case of the reader / writer antenna 15 shown in FIG. 31, the first and second antennas A and B are hatched regions 49 shown in FIG. 32A and hatched regions 49a and 49b shown in FIG. Such an incommunicable area does not occur, and has an antenna pattern shape and a mutual arrangement. In this case, the interval L shown in FIG. 31 (in other words, the interval L described in the (g) and (h) terms) corresponds to the first pattern portion 35 of the first antenna A and the second antenna. The mutual spacing L with the third pattern part 39 of B is approximately 1Z20. And this ratio (ie, L / L Is preferably in the range of 1Z40 to 1Z10 in view of practicality and in general.

Ten

More preferably, it is in the range of 1Z30 to 1Z15.

However, also in the case of the reader / writer antenna 15 shown in FIG. 31, there may be a non-communicable area as described below. That is, in the case of the reader / writer antenna 15 shown in FIG. 31, the connecting portion 48 of the first antenna A and the base line portion 43 of the second antenna B, and the connecting portion 48 of the second antenna B and the The effective antenna pattern element substantially extending in the depth direction y between the first antenna A and the base line portion 43 (in other words, of the first and second antennas A and B) An effective antenna pattern element extending in the frontal direction X only by the presence of the second and fourth pattern portions 37, 41 and the first and second rising portions 46, 47) (in other words, The first pattern portion 35 of the antenna A of 1 and the connecting portion 48 and the base line portion 43) of the second antennas A and B do not exist. For this reason, in the case of the reader / writer antenna 15 shown in FIG. 31, the magnetic field component in the depth direction y parallel to the surface of the shelf plate 11 tends to be weak in the hatched area 50 in FIG. There is. Therefore, in the reader / writer antenna 15 shown in FIG. 31, the reader / writer antenna 15 is placed in the hatched area 50 when the electronic tag 19 is placed parallel to the x-z plane as shown in FIG. 32C. It may not be possible to communicate with the electronic tag 19 that has been placed. In other words, the hatched area 50 may become an incommunicable area where the reader / writer antenna 15 can not communicate with the electronic tag 19. More specifically, as described above, when the size of the electronic tag 19 is large, as long as the reader / writer antenna 15 is on the shelf board 11, the magnetic field from the reader / writer antenna 15 is relatively large. Even in the area substantially along the weak shelf board centerline 45, it can communicate with the electronic tag 19 sufficiently. Therefore, the reader / writer antenna 15 is effective to extend substantially along the front direction X to a position slightly away from the electronic tag 19 even in the above-mentioned incommunicable area (that is, the hatched area 50). The magnetic field generated from the antenna pattern elements 35, 39, 43, 48 can be sufficiently communicated with the electronic tag 19. However, as described above, when the size of the electronic tag 19 becomes sufficiently small, as described above, there may be a non-communicable area 50 in which the reader / writer antenna 15 can not communicate well with the electronic tag 19.

[0178] FIG. 32D corrects such a problem of the reader / writer antenna 15 shown in FIG. Shows a modified example. In the case of the reader / writer antenna 15 shown in FIG. 32D, the first and second rising portions 46 and 47 of the first and second antennas A and B are inclined at a predetermined angle 対 with respect to the depth direction y. ing. Such an inclination angle Θ may also have one or any plurality or all of the second and fourth pattern portions 37, 41 of the first and second antenna A, B. Good. And, in the illustrated embodiment, the predetermined angle よい may be about 30 °, but from the viewpoint of practicality, it is generally preferable to be in the range of 15 ° to 45 °. More preferably, it is in the range of 20 ° to 40 °, and it is more preferably in the range of 25 ° to 35 °. The inclination of the predetermined angle 傾斜 is in the same direction as the effective antenna pattern elements 46, 47, 37, 41 (in the illustrated embodiment, from the rear edge 34 to the front edge 38). It is preferable to incline from the right to the left). Thus, each of the bends 44 of the first and second antennas A, B is preferably substantially parallelogram. Further, it is preferable that each of the effective antenna pattern elements which are inclined by a predetermined angle 延在 extend substantially parallel to each other.

In the case of the reader / writer antenna 15 shown in FIG. 32D, even if the magnetic field components in the depth direction y parallel to the surface of the shelf board 11 are inclined by the predetermined angle 0, the comparison is made even with the effective antenna pattern element. Does not become particularly weak in the hatched area 50 in FIG. 26C. Furthermore, the magnetic field component force in the opening direction X parallel to the surface of the shelf plate 11 does not become particularly weak in the chain line area 49 shown in FIG. 32A and the chain line areas 49a and 49b shown in FIG. Therefore, according to the reader / writer antenna 15 shown in FIG. 32D, the electronic tag 19 extending along any one of the xz plane and the yz plane is a shelf board. It can communicate well so that there is no null point (in other words, an unreadable point) on 11.

(4) Power feeding method to reader / writer antenna

Also in the case of the reader / writer antenna 15 in the third embodiment of the second group invention, as in the case of the first and second embodiments of the second group invention, the first and second antennas A, Power can be supplied to B alternately.

However, in the case of the reader / writer antenna 15 shown in FIG. 31, since the capacitor 161 for the resonant circuit is connected between the terminal portions 32 a and 32 b of the pair of the second antenna B, It is preferable to feed only the first antenna A as a feed antenna to only the first antenna A, and not feed the second antenna B to the second antenna B as a non-feed antenna. In addition, when complementing each other's incommunicable area using a plurality of antennas, it has conventionally been necessary to switch the plurality of antennas sequentially to feed power. However, in the case where only the first antenna A is fed as described above, such switching of the antenna is unnecessary, so the configuration of the reader / writer is simple. In addition, such a capacitor for resonant circuit 161 can be used as the other reader / writer antenna 15 in the third embodiment, or any reader in the first and second embodiments of the second group invention. The same can be applied to the writer antenna 15 as well.

In the case of the reader / writer antenna 15 shown in FIG. 31, etc., the capacitance of the resonant circuit capacitor 161 connected between the pair of terminal portions 32a and 32b of the second antenna B, which is a non-feed antenna. C is

[Equation 1] ί = 2 兀 / ττ ^ Force It is preferable that the value is obtained. In this case, f is an operating frequency which is the frequency of the supply current to the first antenna A, for example f = 13.56 MHz. L is the inductance of the second antenna B. Then, if the capacitance C of the capacitor for resonant circuit 161 is selected to the value shown in the above equation, the reader / writer antenna 15 with a Q value (that is, the quality 'factor) enhanced is designed to match the operating frequency f. Therefore, the magnetic field generated by the induced current flowing through the second antenna B can be made to coincide with the resonant frequency. When the capacitor for resonance circuit 161 is also configured as a semi-fixed capacitor or variable capacitor, adjustment of the capacitance C of the semi-fixed capacitor or variable capacitor 161 and Z or fine adjustment are appropriately performed. Good resonance of the second antenna B, which is an unpowered antenna, can be obtained.

(5) Effects of Reader / Writer Antenna

According to the reader / writer antenna 15 shown in FIGS. 31 and 32D according to the third embodiment of the second group invention, one of the antennas (for example, the first antenna A) is used as a feed antenna and the other antenna ( For example, make the second antenna B) a non-feeding antenna be able to. Therefore, communication with the electronic tag 19 can be performed with a small number of (specifically, one) feeding antennas. Further, according to the reader / writer antenna 15 shown in FIG. 32D, in particular, the reader / writer antenna 15 can communicate favorably with the electronic tag 19 which does not particularly depend on the direction or size of the electronic tag 19. Furthermore, in the case of the reader / writer antenna 15 shown in FIGS. 31 and 32D, when power is supplied to the first antenna A as the feed antenna, each effective antenna pattern element of the non-feed antenna B (especially, the first and the second The induced current generated in the second rising portions 46, 47) flows in the direction of a generally common current, as in the case of the reader / writer antenna 15 shown in FIG. 22B. In other words, the non-feeding antenna B overlaps with the feeding antenna A, the directionality S of the induced current generated at the longitudinal overlapping portion or the closest longitudinal portion, and the direction force S of the non-feeding antenna B The shapes of the first and second antennas A and B and their mutual arrangement were selected so as to be identical at all antenna pattern sites. Therefore, even if the first and second antennas A and B are sequentially switched and the two antennas are not sequentially fed, the readable region of the electronic tag 19 by the emission magnetic field of the feeding antenna A and the non-feeding antenna The readable area of the electronic tag 19 due to the induction magnetic field of B can complement each other for the incommunicable area of the antennas A and B.

Furthermore, in the case of the reader / writer antenna 15 shown in FIG. 31 and FIG. 32D, the number of power supply antennas installed per shelf of the article management shelf 1 such as a product management shelf is only one. It is possible to shorten the communication time required to manage goods such as goods, to eliminate the cost of introducing the RFID system, to eliminate the energy cost at the time of running, and to reduce the cost of labor. be able to.

[0185] For example, taking a library as an example, conventionally, misplacement of books in a bookshelf (that is, a bookshelf) in addition to advice on books for library users, which is the original work of a librarian, etc. A lot of time was spent on operations such as organizing and inventory management. However, by introducing an RFID system including a reader / writer antenna 15 shown in FIG. 31 and FIG. 32D into the library, the librarian manually looks at all the bookshelf and misplaces the books as in the past. It is possible to organize the books by leaving the method of organizing the books and only going to the bookshelf where the misplaced books exist. In addition, since inventory can be performed in real time, it is not necessary to set up a closing day for inventory. I can improve the service to the users of the library. Furthermore, recently, in some libraries, it is possible to obtain books in a short time by introducing an automatic warehouse only for closed books, but in existing libraries, it is possible to use automatic libraries. There was a problem that it would be impossible to obtain the location of the automated warehouse itself if the cost of constructing the warehouse was high. However, R as described above

By introducing the FID system, the same effect as the above-mentioned automatic warehouse can be obtained only by arranging the reader / writer antenna 15 and the like on the existing bookshelf.

The effects described in this section (that is, the section “(5) Effects of the antenna for the reader / writer”) are obtained by the antenna 15 for the reader / writer according to the first and second embodiments of the second group invention described above. It is quite obvious that it can also be played partially or totally.

[0187] 4, additional modification of the second group invention

In the above, the first to third embodiments of the second group invention of the present invention have been described in detail. However, the second group invention of the present invention can be further subjected to various changes and modifications based on the spirit of the invention described in the claims which are not limited to these embodiments.

For example, in the first to third embodiments of the second group invention, the shelf boards 6 and 11 to 14 in the upper and lower five stages are provided on the article placement shelf 1. However, the shelf board does not necessarily have to be provided in the upper and lower five stages. In the case where two to four or six or more additional stages may be provided in the upper and lower, only one may be sufficient.

In the first to third embodiments of the second group invention, the second group invention of the present invention is applied to the article placement shelf 1. However, according to the reader / writer antenna 15 in the first to third embodiments of the second group invention, even the compact electronic tag 19 is substantially irrelevant to the orientation of the electronic tag 19. It is readable. Therefore, the second group invention can be applied to a table on which various articles such as a counter table such as a reception counter table of a library, a table, a desk, etc. are placed, and a medicine bottle etc. It can also be used as a reading antenna for physical distribution in manufacturing lines, a reading antenna for parts management in factory lines, and a gate antenna. Furthermore, the reader antenna according to the second invention should read not only the electronic tag attached to the moving item but also the electronic tag attached to the stationary item as well. Power S can be used, and relatively small electronic tags attached to small articles that can be lined with only relatively large electronic tags attached to books placed on the shelf of a bookshelf such as a library Can be read as well. Furthermore, the reader / writer antenna according to the second group invention can also be used as an antenna for an electronic tag incorporated into an electronic tag. Therefore, the reader antenna of the second group invention can be used for inventory management of product shelves such as stores, monitoring for customers to take out products, and the like. And, for the various applications as described above, the antenna for reader of the first group invention described in the above-mentioned item A (that is, the item of "A, embodiment of the first group invention") is also used similarly. be able to. Furthermore, the reader antenna according to the second group invention is not limited to a substantially rectangular substrate such as a shelf plate of an article mounting shelf, and may be substantially square, substantially parallelogram, other substantially trapezoidal, approximately oval, etc. It can be incorporated into a substrate having various shapes.

In the first to third embodiments of the second group invention, the substantially loop shaped antenna pattern 31 of the first and second antennas A and B of the reader / writer antenna 15 is , One-roll one. However, the antenna pattern 31 may be a plurality of turns wound a plurality of times in a spiral or the like.

In the first to third embodiments of the second group invention, the antenna pattern elements 35 and 37 of the first and second antennas A and B of the reader / writer antenna 15 respectively. Most of the connections between each other, such as 39, 41, 43, 46 to 48, etc., have a pointed shape such as a substantially right angle. However, one or more or all of the connection sites may be rounded.

In the first to third embodiments of the second group invention, the bending portions 44 and 44a of the first and second antennas A and B of the reader / writer antenna 15 respectively. The number of 44bs is two in the first embodiment of the second group invention and five in each of the second and third embodiments of the second group invention. However, the number of the bending portions 44 need not be the number of these without force, but may be any number more or less than that. It may be one.

Further, the leader line shown in FIG. 32D in the already described third example of the second group invention is provided. In the case of the antenna 15, all the first and second rising portions 46, 47 are inclined in the same direction and at substantially the same angle 互いに so that they are almost parallel to each other. There is. However, the first and second rising portions 46 and 47 need to be substantially parallel to each other, and need not necessarily be inclined to the same direction as each other, nor necessarily be inclined to substantially the same angle as each other. Not necessarily. Thus, for example, the first rising portion 46 and the second rising portion 47 may be inclined in opposite directions to each other. Furthermore, it is not necessary that all of the first and second risers 46, 47 be inclined, only some of the first and second risers 46, 47 may be inclined. . Thus, for example, the first rising portion 46 may not be substantially inclined or may have a small inclination angle, and only the second rising portion 47 may be inclined at a predetermined angle.

C, Embodiment of the Third Group Invention

Next, three embodiments (that is, the first, second and third embodiments) in which the third group invention of the present invention is respectively applied to the bookshelf search system are referred to as "the first and third group inventions. Embodiment 1 of 1, 2nd Embodiment of the 2nd 3rd Group Invention, 3rd Embodiment of the 3rd Group Invention 3rd Operation of the Reader / Writer Antenna of the 4th Group Invention The terms “experiments” and “5, additional modifications of the third group invention” will be described separately with reference to FIGS. 33 to 49.

1, the first embodiment of the third group invention

First of all, according to the first embodiment of the third group invention of the present invention, "(1) Schematic configuration of entire bookshelf", "(2) Shelf with antenna for reader / writer", "(3) Interference prevention member The terms “(4) Pattern shape of antenna for reader / writer” and “(5) Power feeding method for antenna for reader / writer” will be described with reference to FIGS. 33 to 39.

(1) Schematic configuration of the entire bookshelf

The bookshelf (in other words, the article management shelf) 1 and the electronic tag 19 in the first embodiment of the third group invention of the present invention, as shown in FIG. 33, except for the points described below, of the present invention The configuration may be substantially the same as the article placement shelf 1 and the electronic tag 19 in the first embodiment of the first group invention. Therefore, in FIG. 33 to FIG. 39, the same reference numerals are attached to the same parts as in FIG. 1 to FIG. The bookshelf 1 shown in FIG. 33 has a side plate 3a common to the left bookshelf part (ie, the first bookshelf part) la and the right bookshelf part (ie, the second bookshelf part) lb toward the left. It is configured by being adjacent to each other to share the Each of these first and second book frame parts la and lb is composed of a side plate 3 or 3a on the left side, a side plate 3a or 3 on the right side, a back plate 4, a top plate 5 and a bottom plate 6 respectively. It has a box lid shape (in other words, a substantially rectangular shape). The pair of left and right side plates 3 and 3a, the back plate 4, the top plate 5 and the bottom plate 6 can be made of glass, synthetic resin, wood or other suitable non-metallic material pots, respectively. The bottom plate 6 is also used as the lower shelf plate. Each of the first and second bookshelf parts la, lb may further comprise a front plate (not shown), which preferably also comprises a substantially transparent material such as glass, plastic or the like. Such a front plate may be, for example, a pair of left and right sliding doors. In the illustrated embodiment, the pair of left and right side plates 3 and 3a are configured to slightly project downward from the bottom plate 6. The pair of left and right support legs 8 and 8a are respectively formed on the first and second bookshelf portions la and lb by the pair of left and right protrusions. In this case, the first and second bookshelf parts la, lb have a common support leg 8a.

[0198] Each of the first and second bookshelf parts la and lb of bookshelf 1 shown in FIG. 33 is, in the illustrated embodiment, a suitable non-metallic material such as glass, synthetic resin, wood or the like (in other words, Three-tiered configuration provided with the top shelf board 11, the second shelf board 12 and the lower shelf board 6, each of which is composed of a transparent or opaque non-conductive material) as main components belongs to. These shelf plates 6, 11 and 12 have a pair of left and right side plates 3 and 3a, and a back plate 4 by means of appropriate supporting means (not shown). It can be supported by

In each of the shelf boards 6, 11 and 12 of the bookcase 1 shown in FIG. 33, the reader / writer antenna 15 shown in FIGS. 34 and 35 is laid so as to be substantially parallel to the shelf board surface. It is done. Then, the first and second loop antennas A and B of the reader / writer antenna 15 are connected to an antenna switch (not shown) by a coaxial cable (not shown) via a matching adjuster (not shown). Not connected). Then, the antenna switching unit is sequentially transmitted to the reader / writer main body 17 and the control computer (not shown) by the coaxial cable 17. Next connected. The reader / writer main body 17 is for exchanging information such as an electrical signal with the reader / writer antenna 15. The reader / writer main body 17 can be disposed on the bookcase 1 and, in the illustrated embodiment, is disposed on the top plate 5 of the second bookcase portion lb. The above-mentioned antenna switching device can also be similarly arranged on the bookcase 1 as required.

[0200] On each shelf board 6, 11, 12 of the bookshelf 1 shown in Fig. 33, books (ie, articles) 8 of various sizes are mixedly mounted. In addition, as shown in FIG. 36, these books 18 are respectively provided with electronic tags 19 which may be in the form of a sheet. The electronic tag 19 may be attached to the front cover 26, back cover 27 or back cover 28 of the books 18. In any of these cases, the electronic tag 19 is not particularly required to have a specific position or a specific orientation with respect to the surface of each shelf board 6, 11, 12. Such an electronic tag 19 has a single-turn or multi-turn small loop-shaped small antenna 21 whose center coincides with the center of the electronic tag 19 and a memory in which information is recorded (see FIG. A communication circuit may be provided which includes an IC chip 22 incorporated in the central opening of the small antenna 21 having a built-in substantially loop shape (see FIG. 4).

(2) Shelf with Antenna for Reader / Writer

Each shelf board 7, 11 and 12 of the bookshelf 6 shown in FIGS. 33 and 34 has, for example, a length L in the front direction x (see FIG. 34) of about 840 mm and a length L in the depth direction y (see FIG. 34). Is about 170 mm

1 2

It may be substantially rectangular in length. As shown in FIGS. 34 and 35, a reader / writer antenna 15 having first and second loop antennas A and B is provided on each of the shelf boards 7, 11 and 12. FIG. 34 is a plan view of, for example, the top shelf 11, showing the first and second loop antennas A and B as projected. Each of the shelf boards 6 and 12 other than the shelf board 11 may be provided with a reader / writer antenna 15 having substantially the same shape as the shelf board 11 shown in FIGS. 34 and 35. A reader / writer antenna 15 may be provided in which the shape of one or both of the second loop antennas A and B is different from that of the shelf board 11.

The first and second loop antennas A and B of the reader / writer antenna 15 (specifically, the substantially loop shaped antenna pattern 31 shown in FIG. 34, FIG. 37, FIG. 38 and FIG. Both terminal parts 32a and 32b) are, as shown in FIG. 35 (see FIG. 3), upper and lower two plates 23, 24 respectively made of a suitable non-metallic material such as glass, synthetic resin, wood, etc. The conductive paint (for example, silver paste) may be printed and baked to a width of, for example, about 5 mm. In addition, the first and second loop antennas A and B may be formed of copper wire having a substantially circular cross-sectional shape and a cross-sectional diameter of 0.1 mm. In this case, the copper wire may be bent and formed into a predetermined pattern, and then attached and arranged by partially or totally adhering to the plates 23 and 24 with a suitable adhesive. Furthermore, the pair of terminal portions 32a and 32b of the first and second loop antennas A and B are formed of the conductive pattern cover formed by printing and baking the conductive paint as described above. The antenna pattern 31 having a substantially loop shape may be made of copper wire as described above. In this case, both ends of the antenna pattern 31 may be electrically connected to the pair of terminal portions 32a and 32b by bonding with an appropriate conductive adhesive, soldering or the like. Next, the first and second loop antennas A and B are attached to the upper and lower two plates by laminating these plates 23 and 24 with an intermediate film 25 made of a nonconductive film force such as PVB resin. It is inserted between 23 and 24. Each of these plates 23, 24 may be, for example, a glass plate having a thickness of about 2.3 mm (specifically, a glass plate manufactured by the float method). In addition, the thickness L of the intermediate film 25 (see FIG. 3) shown in FIG.

3

It may be m. The materials constituting the first and second loop antennas A and B also have to be conductive films, conductive metal foils, metal wires such as copper wires as described above, and so on. It may be a wire conductor etc.

The first and second loop antennas A and B of the reader / writer antenna 15 thus configured are electrically insulated from one another and the shelf plates 6, 11 as shown in FIG. 35 (see also FIG. 3). The two glass plates 23 and 24 are sandwiched between the two glass plates 23 and 24 in a state substantially parallel to the surface of each of 12 (in other words, the loop antennas A and B are substantially parallel to each other). Therefore, the first and second loop antennas A and B are prevented from being scratched by contact with the books 18 placed on the shelf plates 6, 11 and 12. In addition, since the glass plates constituting the upper and lower surfaces of the shelf plates 6, 11 and 12 are excellent in water resistance, weather resistance, chemical resistance and the like, the bookshelf 1 shown in FIG. Can. And the shelf board 6, In the case where the main components 11 and 12 are transparent glass materials, the reader / writer antenna 15 can also be constituted by the thin wire conductor as described above in which the crossing portion and the overlapping portion are insulated.

In the third group invention of the present invention, the distance L (see FIGS. 35 and 3) between the two loop antennas A and B, which are substantially parallel to each other, in the thickness direction is a view of practicality.

3

In terms of point, in general, the range of 0.2 to 35 mm is preferable, and the range of 0.2 to 30 mm is more preferable. However, even if this interval L is smaller than 0.1 mm, two

3

It is sufficient if electrical isolation between the loop antennas A and B is possible. Also, this interval L is 3

3

If it is larger than 5 mm, at least one of the two loop antennas A and B communicates well with the electronic tag 19 provided on the books 18 placed on the shelf boards 6, 11 and 12. There is a danger of becoming

[0205] The first and second loop antennas A and B of the reader / writer antenna 15 are, as shown in FIG. 35 (see also FIG. 3) in the illustrated embodiment, the shelf boards 6, 11, 12 Are buried inside the house. The loop antenna of at least one of the first and second loop antennas A and B is similarly formed on the upper surface of the upper plate 23 of each shelf plate 6, 11, 12. It is also good. In addition, after turning over each of such shelves 6, 11 and 12 upside down, in the subsequent manufacturing process, as in the case of the shelf without the shielding material shown in FIG. 37 (see also FIG. 3), The at least one loop antenna can be formed on the lower surface of the lower plate 24 of each shelf plate 6, 11, 12 by using or the like. Furthermore, one of the first and second loop antennas A and B is formed on the upper surface of the upper plate 23 of each shelf plate 6, 11, 12 and the other is under the respective shelf plates 6, 11, 12. It can also be formed on the lower surface of the side plate 24. In any of these cases, when the plate 23, 24 which is the main component of each shelf 6, 11, 12 intervenes between the first and second loop antennas A, B, the intermediate film 25 is formed. It can be omitted. In this case, the upper plate 23 and the lower plate 24 can be integrated with each other as needed. Furthermore, when the loop antenna of at least one of the first and second loop antennas A and B is formed on the upper surface of the upper plate 23 of each shelf plate 6, 11, 12, each shelf plate 7, 11, 12 Each shelf board including at least one of the above loop antennas, 11, 12, 12 in order to reduce the chance of contacting the books 18 placed on the above. The top surface of the can be coated with a coating of a suitable insulating material.

The terminals of the first and second loop antennas A and B of the reader / writer antenna 15 (ie, the pair of terminal portions 32a and 32b) are processed as shown in FIGS. 38 and 39, for example. It can be done. That is, in the embodiment shown in FIGS. 38 and 39, a portion corresponding to the pair of terminal portions 32a and 32b of the first and second loop antennas A and B of the pair of upper and lower plates 23 and 24, respectively. The missing parts 58, 59 are formed in these places, respectively, by precluding the Next, a pair of lead-out electrodes 75a and 75b are attached and arranged on the lower surface of the upper plate 23 and the upper surface of the lower plate 24 by bonding them with an appropriate adhesive. In this case, it is possible to use, as the pair of lead-out electrodes 75a and 75b of the first and second loop antennas A and B, copper plates coated on their entire surface by solder or the like. Each of the copper plates 75a and 75b may have, for example, a substantially rectangular shape having a length of 25 mm, a width of 10 mm, and a thickness of 0.1 mm. Then, as described above, the substantially loop-shaped antenna patterns 31 of the first and second loop antennas A and B and the pair of terminal portions 32a and 32b are referred to as the lower and lower plates of the upper plate 23. Form on the top of the In this case, as shown in FIG. 38, at least partial force of the pair of terminal portions 32a and 32b of the first and second loop antennas A and B is the lower surface of the pair of extraction electrodes 75a and 75b of the upper plate 23 and The lower plate 24 is formed on the top surfaces of the pair of lead-out electrodes 75a and 75b. Finally, by sequentially laminating the upper plate 23, the intermediate film 25 and the lower plate 24, it is possible to configure the shelf 11 without the shielding material shown in FIG. 37 (see FIG. 3).

(3) Interference prevention member

By attaching a conductive porous sheet-like member 171 as a shielding member (in other words, a member for preventing interference) to the lower surface of the shelf 11 without the shielding member shown in FIG. 37 (see FIG. 3), And the shelf board 11 with a shielding material shown in FIG. 35 can be manufactured. Such attachment may be achieved, for example, by partially or totally adhering the conductive porous sheet member 171 to the lower surface of the lower plate 24 of the shelf 11 without the shielding material with a suitable adhesive. Can be achieved by In this case, if the reader / writer antenna 15 is formed on the lower surface of the lower plate 24 of the shelf board 11, the same intermediate film as the intermediate film 25 shown in FIG. 35 (see also FIG. 3) is used. If it intervenes between lower board 24 and porous sheet-like member 171 ,. Such an intermediate film 25 is a film which also comprises a suitable non-conductive material such as PET (ethylene terephthalate) and is previously bonded to one or both surfaces of the porous sheet-like member 171. Good. In FIG. 34 and all the similar drawings (including the cases of the second and third embodiments described later), the porous sheet-like member 171 is indicated by a dot-and-dash line for convenience of illustration. . The length in the frontal direction X of the porous sheet-like member 171 may be, for example, substantially the same as the length L in the frontal direction X of the shelf plate 11 (in other words, 840 mm). The length y of the porous sheet-like member 171 in the depth direction is substantially the same as the length L (in other words, about 170 mm) in the depth direction y of the shelf plate 11, for example.

2

It may be one. Furthermore, the porous sheet-like member 171 used in the first embodiment is substantially the same as the porous sheet-like member 171 shown in FIG. 41 used in the second embodiment described later. It may be shaped and substantially identical in structure.

[0208] As shown in FIG. 34 (see also FIG. 41), the porous sheet-like member 171 has a central opening (ie, a through opening) 172 formed by lacking a substantially rectangular central portion. It has a closed loop shape. The outer peripheral shape of the porous sheet-like member 171 may be substantially rectangular, and the outer periphery of the reader / writer antenna 15 may be enlarged by one degree. Further, the inner peripheral shape of the porous sheet-like member 171 (in other words, the shape of the central opening 172) is also substantially rectangular, and the outer periphery of the reader / writer antenna 15 is at least slightly smaller in the depth direction y. It may be The ratio of the size of the central opening 172 to the size of the porous sheet-like member 171 (that is, the size including the central opening 172) (in other words, the central opening 172 of the porous sheet-like member 171 In the illustrated embodiment, the aperture ratio) is approximately 50%. The width of each side of the porous sheet-like member 171 (in other words, the shortest distance from each side of the four sides of the sheet-like member 171 to the central opening 172) is about 35 mm (the trailing edge Part 34 side), about 10 mm (to the left side edge 36 side), about 35 mm (the front edge 38 side) and about 25 mm (to the right side edge 40 side) It is.

Therefore, porous sheet-like member 171 has an overlapping portion overlapping the outer peripheral portion of antenna 15 for the reader / writer. In addition, the reader-writer of the porous sheet-like member 171 The overlapping state with the antenna 15 will be described in detail in the following “(4) Pattern shape of antenna for reader / writer”. Furthermore, in the illustrated embodiment, the mutual spacing between the porous sheet-like member 171 and the second loop antenna B (in particular, the antenna pattern 31 thereof) is, as shown in FIG. It is approximately equal to the thickness and about 2.3 mm. Further, as shown in FIG. 35, the distance between the porous sheet-like member 171 and the first loop antenna A (in particular, the antenna pattern 31 thereof) is the thickness of the lower plate 24 (about 2.3 mm). And the thickness of the second antenna B, and the thickness (about 300 m) of the intermediate film 25 and so on, which is approximately 3 mm.

In the first aspect, the conductive porous sheet member 171 has a mesh structure in which conductive filaments such as metal wires are braided in a mesh shape. In the illustrated embodiment, the porous sheet-like member 171 has a substantially matrix shape (in other words, substantially a plurality of vertical lines and a plurality of horizontal lines formed of metal wires such as copper wires and iron wires). Metal mesh force braided in grid shape). The wire diameter of the metal wire may be, for example, about 20 μm, and the mesh pitch of the metal mesh may be, for example, about 300 μm. Therefore, the longitudinal and lateral lengths of the small holes (ie, the through holes) corresponding to the eyes of one grid may be, for example, about 280 m, and this porous sheet shape may be used. The maximum length of the small holes of the member 171 may be, for example, about 396 m, and the area per one small hole may be, for example, about 78, 400 m ^2. The open area ratio (excluding the central opening 172) may be, for example, about 87%. In the second embodiment, the conductive and porous sheet-like member 171 is made of a large number of small conductive thin plates such as stainless steel or other thin metal plates as in the case of the mesh structure described above. It may be a thin plate of a micro mesh structure such as a micro mesh metal in which an opening (i.e., a through hole) is formed. Further, in any of the first and second embodiments, the conductive and porous sheet member 171 may be made of a magnetic material or may be made of a nonmagnetic material. Furthermore, in any of the first and second aspects, the small holes formed in the porous sheet member 171 have a substantially square shape, a substantially rectangular shape, a substantially rhombus shape, a substantially trapezoidal shape, a substantially hexagonal shape, or the like. Shape, substantially circular shape, substantially elliptical shape, substantially oval shape, a shape consisting of any number of combinations of these shapes, or any other shape It may be shaped. The sheet resistance of the metal mesh 171 having the copper wire force may be, for example, about 0.18 Ω. However, in the third group invention of the present invention, the practicality viewpoint force is generally used. In addition, the sheet resistance of the metal mesh is preferably not more than 0.5 Ω or less, more preferably not more than 0.3 Ω or less. In addition, these preferable and more preferable decimal value ranges also apply to the porous sheet-like member 171 having the above-mentioned micro mesh structure.

In any of the above first and second embodiments of the porous sheet-like member 171 (in other words, in the third group invention of the present invention), the porous sheet-like member 171 also refers to the viewpoint of practicality. In general, it is preferable to satisfy one or more or all of the numerical ranges described in the following (a) to (h). In addition, it is more preferable that the numerical range in the catfish described in the following (a) to (h) items be satisfied with the third group invention of the present invention, and is a numerical range.

(a) The ratio of the size of the central opening 172 to the size of the porous sheet-like member 171 (ie, the size including the central opening 172): 20 to 80% (30 to 70%),

(b) Width of one side of porous sheet-like member 171: range of 2 to 80 mm (4 to 60 mm),

(c) The mutual spacing between the porous sheet-like member 171 and the first loop antenna A (in particular, the antenna pattern 31 thereof) and the porous sheet-like member 171 and the second loop antenna B (in particular, the antenna pattern 31 thereof) Each) (in other words, the distance between the porous sheet-like member 171 and the reader / writer antenna 15 (in particular, its antenna pattern 31)): 0.5 to 30 mm (l Range of ~ 15mm),

(d) The maximum line width of the conductive filament of the porous sheet 171 when the porous sheet 171 is a mesh of conductive filaments braided (if the cross section is substantially circular , Wire diameter): 4 to 200 μm (8 to 100 μm) range,

(e) The pitch of the small holes of the porous sheet-like member 171 (specifically, the mesh pitch when the sheet-like member 171 is a mesh of conductive strips braided): 50-2, The range of 000 π ι (100-1, 200 / zm),

(f) Maximum length of each small hole of porous sheet-like member 171: in the range of 60 to 3,000 (120-1, 600 / zm), (g) The area per one of a large number of small holes of the porous sheet member 171: a range of 4,000-1, 800, 000 ^ m ² (8,000-800, 000 m ² ), and

(h) The opening ratio of the portion of the porous sheet-like member 171 excluding the central opening 172 (in other words, the opening ratio of a large number of small holes!): 70 to 95% (80-92) %) Range.

(4) Pattern shape of antenna for reader / writer

The reader / writer antenna 15 for communicating with the electronic tag 19 provided in the books 18 by wireless communication is a first loop antenna as shown in FIGS. 34, 35 and 37 (see also FIG. 3). A and the 2nd loop antenna B and power also consist! Each of the first and second loop antennas A and B has a substantially loop-shaped antenna pattern 31 and a pair of terminals connected to both ends of the substantially loop-shaped antenna pattern 31 and in proximity to each other. It consists of parts 32a and 32b. Since the gap 33 is provided between the pair of terminal portions 32a and 32b, the gap 33 is also present between both ends of the substantially loop-shaped antenna pattern 31. The pair of terminal portions 32a, 32b may be connected to the matching adjuster (not shown) by a twisted cable (not shown).

34, 35 and 37 (see also FIG. 3). The substantially loop-shaped antenna of each of the first and second loop antennas A, B constituting the reader / writer antenna 15 shown in FIG. The patterns 31 may have substantially the same shape as one another or shapes substantially similar to one another except that they are symmetrical in the front-rear direction, as shown in FIGS. 34 and 37. In each of the substantially loop shaped antenna patterns 31 of the first and second loop antennas A and B, terminal portions 32a for feeding or the like are connected in series as necessary and are on the side of the rear edge 34 of the shelf board 11 The first pattern portion 35 located, the second pattern portion 37 located on the side of the left edge 36 toward the shelf 11, and the front edge of the shelf 11 (in other words, books 18 3rd pattern part 39 located on the side of the extraction side of 38) and terminal parts 32a and Z or 32b for feeding etc. are connected as needed and are directed to the right of shelf board 11 The force may be sequentially connected to the fourth pattern portion 40 located on the side of the edge 40. The antenna pattern 31 may be formed in a loop shape as a whole except for the gap 33 corresponding to the pair of terminal portions 32a and 32b. These first and second rules Each of the antennae A and B preferably has a substantially one-loop shape, with cross sections where one part and another part cross each other.

[0214] The first pattern portion 35 of the first loop antenna A is slightly parallel to the rear edge 34 of the bracket slightly away from the rear edge 34 of the shelf plate 11 as shown in Figs. 34 and 37. (In other words, it is in a state substantially parallel to the opening direction X of the shelf 11 and is substantially linear in the illustrated embodiment. The same applies to the following.) It extends over almost the entire length. The second pattern portion 37 of each of the first and second loop antennas A and B is close to or to some extent away from the left edge 36 of the shelf 11 toward the left edge 36 of the bracket. Parallel state (in other words, a state substantially parallel to the depth direction y of the shelf plate 11 and substantially linear in the illustrated embodiment. The same applies below) . The third pattern portion 39 of the second loop antenna B is close to the front edge 38 of the shelf 11 and substantially parallel to the front edge 56 of the bracket (in other words, in the front direction X of the shelf 1 1 In the almost parallel state, the shelf board 11 extends over substantially the entire length of the frontal direction X of the front part. The fourth pattern portion 41 of each of the first and second loop antennas A and B has a portion or an intermediate portion on the rear end 34 side in the front-rear direction for connection of the terminal portions 32a and / or 32b. The gap 33 is broken by a distance V, and is substantially parallel to the right edge 40 of the bracket at a certain distance from the edge 40 on the right side of the shelf 11 (in other words, the shelf 11) Extends approximately in parallel with the depth direction y of y).

The third pattern portion 39 of the first loop antenna A is slightly parallel to the front edge 38 of the bracket at a distance from the front edge 38 of the shelf 11 (in other words, the front of the shelf 11) A plurality of (5 in the illustrated embodiment) base line portions 43 intermittently extending so as to form intermittent portions 42 between them in a substantially parallel state in the direction X; One or more (preferably a plurality of) preferably extending between the plurality of intermittently extending baseline portions 43 (in other words, the intermittent portion 42) In the example, it consists of four bends 44. Each baseline section 43 is a virtual center line of the reader / writer antenna 15 extending in the direction of the front of the shelf 11 along the center of the reader / writer antenna 15 in the depth direction y (hereinafter referred to as “antenna center line "The front edge than 45." The rear edge 34 of the third pattern portion 39 of the second loop antenna B extends on the side 38. The first pattern portion 35 of the second loop antenna B is separated from the rear edge 34 of the shelf 11 to some extent substantially parallel to the rear edge 34 of the bracket (in other words, the front of the shelf 11) Intermittently extending so that an intermittent portion 42 is generated between each other in a direction substantially parallel to direction X! /, A plurality of (5 in the illustrated embodiment) baselines One or a plurality (preferably a plurality), each being present between the portion 43 and the plurality of baseline portions 43 extending intermittently (in other words, the intermittent portion 42) In the illustrated embodiment, the four bends 44 and forces are also included. Each baseline portion 43 extends on the side of the trailing edge 34 with respect to the antenna center line 45 on the side of the leading edge 38 of the first pattern portion 35 of the first loop antenna A. In the illustrated embodiment, a virtual center line of the shelf 11 extending in the direction X of the front of the shelf 11 along the center of the shelf 11 in the depth direction y (that is, the center line of the shelf) Is substantially coincident with the antenna centerline 45.

As shown in FIGS. 34 and 37, each of the bent portions 44 of the first loop antenna A is connected at its proximal end to the end on the right side toward the baseline portion 43 on the left side. The base end is connected to the left end of the first rising portion 46 rising toward the substantially trailing edge 34 of the shelf 11 and the right side of the baseline portion 62 toward the right. And the front end direction of the second rising portion 47 rising toward the substantially rear edge portion 34 of the shelf board 11 and the front end portions of the first and second rising portions 46, 47 respectively. And a connecting portion 48 extending substantially parallel thereto. Each of the bent portions 44 is preferably a substantially rectangular convex portion as a whole. In this case, in the connecting portion 48, the front edge portion 38 side of the first pattern portion 35 of the first loop antenna A on the side of the trailing edge portion 34 of the shelf board 1 with respect to the antenna center line 45 in the front direction X Preferably, they extend approximately parallel. Therefore, the first and second rising portions 46, 47 are from one side of the shelf board 11 bisected by the antenna center line 45 (specifically, from the front edge 38 side of the shelf board 11) It is preferable that the other side (specifically, the portion on the trailing edge 34 side of the shelf board 11) is crossed and extended so as to be substantially orthogonal to the antenna center line 45.

As shown in FIGS. 34 and 37, each of the bent portions 44 of the second loop antenna B has its proximal end portion connected to the end on the right side toward the baseline portion 43 on the left side. And shelf board 11 The base end portion of the first rising portion 46 rising substantially toward the front edge portion 38 of the left end of the shelf board 11 is connected to the left end portion of the right base line portion 43 toward the right It extends substantially parallel to the frontal direction X so as to connect the second rising portion 47 rising substantially to the front edge 38 and the tips of the first and second rising portions 46 and 47, respectively. The connecting part 48 consists of Each of the bent portions 44 is preferably a substantially rectangular convex portion as a whole. In this case, the connecting portion 48 is located on the front edge 38 side of the shelf board 11 with respect to the antenna center line 45 in the front direction X of the rear edge 34 side of the third pattern portion 39 of the second loop antenna B. Preferably, they extend approximately parallel. Therefore, the first and second rising portions 46, 47 are from one side of the shelf board 11 bisected by the antenna center line 45 (specifically, the portion on the rear edge 34 side of the shelf board 11). It is preferable that the other side (specifically, a portion on the front edge 38 side of the shelf board 11) is crossed and extended so as to be substantially orthogonal to the antenna center line 45.

The reader / writer antenna 15 is, as shown in FIGS. 34 and 37, a combination of a first loop antenna A and a second loop antenna B. The second loop antenna B is substantially a loop substantially identical to the substantially loop-shaped antenna pattern 31 of the first loop antenna A except that the second loop antenna B is symmetrical in the back and forth direction with the antenna center line 45 as the symmetry axis. It has a shaped antenna pattern 31 and differs from the first loop antenna A only in the position of the pair of terminal portions 32a, 32b. Therefore, the first loop antenna A and the second loop antenna B generally have antenna pattern shapes substantially identical to or substantially similar to each other.

[0219] The reader / writer antenna 15 is configured by arranging the first and second loop antennas A and B in combination with each other as shown in Figs. In this combination, the second loop antenna B has a distance L (see FIG. 37) of approximately 1Z2 (see FIG. 37) corresponding to the length of the connecting portion 48 in the frontal direction X with respect to the first loop antenna A. Line

Four

Approximately 0.5 L and shifted to the right by approximately 45 mm in the illustrated embodiment.

Four

And approximately 1Z8 (ie, approximately 0.125 L) of the distance L (see FIG. 37) corresponding to the length of the first or second rising portions 46, 47 in the depth direction y. Illustrated

5 5

In the embodiment of the present invention, it is placed in front by about 15 mm). The coated portion (in other words, the overlapping portion between the two) of the conductive and porous sheet-like member 171 covering the reader / writer antenna 15 from the lower surface side of the shelf plate 11 is shown in FIG. In Examples of the invention, the following items (a) to (g) are described.

(a) First pattern portion 35 of first loop antenna A and third pattern portion 39 of second loop antenna B,

(b) Baseline portions 43 of the first and second loop antennas A and B, respectively

(c) Connecting portions 48 of the first and second loop antennas A and B, respectively

(d) The front and rear ends of the second pattern portion 37 of each of the first and second loop antennas A and B,

(e) The front and rear ends of the fourth pattern portion 41 of each of the first and second loop antennas A and B,

(f) first and second front and rear end portions of the first and second rising portions 46 and 47 of the first and second loop antennas A and B, and

(g) A pair of terminal portions 32a, 32b of the first and second loop antennas A, B respectively.

In the third group invention of the present invention, generally speaking, the viewpoint of practicality is also said.

It is preferable that one or more or all of the antenna pattern portions among the antenna pattern portions described in (a) to (g) be covered with the porous sheet-like member 171. Further, in the third group invention of the present invention, one or more of the antenna pattern portions described in the following items (h) to (k) will be generally described, also in view of practicality. The entire antenna pattern portion can be covered by the porous sheet-like member 171.

(h) The second pattern portion 37 of the first loop antenna A,

(i) Fourth pattern portion 41 of second loop antenna B,

(j) Second pattern portion 39 of second loop antenna B, and

(k) The fourth pattern portion 41 of the first loop antenna A.

As described above, in the reader / writer antenna 15, an antenna pattern extending substantially along the front X direction of the antenna patterns 31 of the first and second loop antennas A and B. Component (ie, the ante described in the above (a) to (c) The magnetic field (i.e., the magnetic flux) generated in each of the two pattern components) is weakened to a great extent by the porous sheet member 171. In particular, as described in the item (3) (that is, the item Cl (3)), the side on the rear edge 34 side of the porous sheet-like member 171 becomes relatively wide (that is, about 35 mm) ing. Therefore, even when the second bookshelf similar to the bookshelf 1 shown in FIG. 33 is disposed back to back on the back side of the bookshelf 1 shown in FIG. 9, the reader / writer antenna 15 of the bookshelf 1 shown in FIG. There is a low possibility of interference with the same reader / writer antenna of the second bookshelf. Then, antenna pattern components extending along substantially the depth direction y of the antenna patterns 31 of the first and second loop antennas A and B (that is, described in the above (d) to (f). The magnetic field (ie, magnetic flux) generated by each antenna pattern component 37, 41, 46, 47) effectively communicates with the reader / writer antenna 15 and the electronic tag 19 attached to the books 18 Function. Therefore, in the illustrated embodiment, the electronic tag 19 has front cover 173 and Z or back cover 174 of the books 18 so that the electronic tag 19 can communicate well with the reader / writer antenna 15. It is preferable to be provided (in particular, near the lower end thereof).

According to the bookshelf portions la and lb (thus, bookshelf 1) in which the shelf boards 6, 11, 12 on which the reader / writer antenna 15 shown in FIGS. 34 and 35 is installed are used. As will be described in detail with reference to FIGS. 40 and 41, since each shelf portion la, lb can be provided with a large number of shelf boards, the article storage space of the shelf portion la, lb is effectively utilized. be able to. In FIGS. 40 and 41, the same reference numerals as in FIG. 33 denote the same parts as in FIG. 33, and a description thereof will be omitted.

That is, as described in the paragraph (D) of the section “1, background art of the third group invention” in the section “Background Art”, the bookshelf search described in Patent Documents 2, 4 and 5 is carried out. In the case of a bookshelf to which the system is applied, for example, as in the case of the bookshelf 1 shown in FIG. There is a high possibility of mutual interference between For this reason, the space factor is bad because it is necessary to increase the distance between the shelf boards 6 and 11 to 14 which are vertically adjacent to each other. In other words, a book placed on another shelf plate 6, 11 to 14 by receiving a magnetic field emitted from the reader / writer antenna 15 being fed on one shelf plate 6, 11 to 14 It is stuck on class 18 The electronic tag 19 may react. As a result, the books 18 placed on the other shelf boards 6 and 11 to 14 are placed on the one shelf boards 6 and 11 to 14 and erroneously recognized as if they were There is something to be done. Therefore, the distance between the upper and lower reader / writer antennas 15 in the magnetic field emission direction of the reader / writer antenna 15 (that is, the installation plane of the reader / writer antenna 15 or the vertical direction to the shelf 6 or 11-14) (in other words, The reader / writer antenna laid on the upper shelf plates 6 and 11 to 14 and the other reader / writer antenna 15 laid on the next lower shelf plate 6 and 11 to 14 The distance between them must be at least a certain distance so as not to be affected by the magnetic fields. Therefore, in the case of the conventional bookshelf 1 to which the bookshelf search system disclosed in the patent document 2 is applied, it is the case of the A4 size (29.7 mm in height) weekly magazine 18c of the books 18. However, even in the case of the A6 size (14.8 mm high) paperback book 18d, it is necessary to make almost equal intervals between the upper and lower shelf boards 6 and 11 to 14 of the bookshelf 1. For this reason, in the case of the paperback 18d, an extra space is required twice as much as in the case of the weekly magazine 18c, which causes a big problem in the storage capacity of the books 18 in the bookshelf 1.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Patent Document 4: Japanese Patent Application Laid-Open No. 2003-168914

Patent document 5: Unexamined-Japanese-Patent No. 2003-252409 gazette

Further, in the case of the bookcase 1 shown in FIG. 40, in order to prevent interference with the left and right bookcases 1 and the front and back bookcases 1 (both not shown), the surface of the side plate 3 and the back plate Since a shielding material (not shown) is laid on the surface of 4, the electronic tags 19 of the books 18 near the side plate 3 are read. For this purpose, a dead space can be secured by arranging a synthetic resin, wood or other spacer 176 so that the books 18 can not be placed on the shelf boards 6 and 11 to 14 near the side board 3. Because of the need to do so, the storage capacity of the books 18 in Bookshelf 1 further poses a problem.

On the other hand, in the case of book frame parts la and lb in which the shelf boards 6, 11 and 12 on which the reader / writer antenna 15 shown in FIGS. 34 and 35 is installed are used, for example, As in the case of the shelf board 1 shown in FIG. 41 as the second embodiment of the third group invention of the present invention, the partially strong lines generated by the respective antenna patterns 31 of the first and second loop antennas A and B The magnetic field (i.e., the magnetic flux) is approximately force-induced by the porous sheet-like member 171. Weakened in degree. For this reason, there is a possibility that the reader / writer antenna 15 of, for example, the shelf 12 of the bookshelf 1 shown in FIG. 41 may cause interference with the reader / writer antenna 15 of the upper and lower shelves 11 and 13 thereof. ,Few. Therefore, as in the case of the bookshelf of Patent Document 2, there is no particular need to relatively increase the distance between the shelf plates 6, 11 to 14a and 14b. And, it is possible to make the mutual distance between the bookcase 18 heaven 175 (see Fig. 36) and the shelf board 6, ll to 14a, 14b immediately above the bookcase 18 especially related to the size of the books 18 approximately constant. is there. Therefore, in the case of the shelf plate 6, 11 to 14a, 14b on which only the A6 size paperback book 18d is placed, the distance between the upper shelf plate 6, 11 to 14a, 14b is As compared with the case of the shelf boards 6, 11 to 14a, 14b on which only the load is placed, they can always be set at almost constant intervals (for example, 10 mm or more) and can be made sufficiently small. As a result, since there is no need for extra space on the shelf plate 6, 11 to 14a, 14b on which only A6 size paperback book 18d is placed, the above patent having the shelf plate 6, 11 to 14a, 14b is described Even in the case of the bookshelf parts la and lb on which the shelf boards 6, 11 and 12 on which the reader / writer antenna 15 shown in FIG. 34 and FIG. The number of shelf boards 6, 11 and 12 can be increased to 4 or more. For this purpose, in the case of the shelf part la, lb in which the shelf boards 6, 11, 12 on which the reader / writer antenna 15 shown in FIGS. 34 and 35 is installed are used, the bookshelf part la of Patent Document 2 is used. Since it is possible to store more books 18 than lb, the storage capacity per bookshelf can be increased.

Patent Document 2: Japanese Patent Application Laid-Open No. 2003-72919

Further, in the case of the bookshelf 1 shown in FIG. 41, the reader / writer antenna 15 of the shelf boards 6, 11 to 14a, and 14b is the shelf board 6, 11 to 14a of the bookshelf 1 on the left and right and front and back sides thereof. Since the possibility of causing interference with 14b is also small, there is no particular need to secure a dead space, such as by arranging the spacer 176 as described above. For this purpose, since the books 18 can be placed in the entire area of the opening direction X and the depth direction y of the shelf boards 6, 11 to 14a, 14b, the storage capacity per bookshelf can be further increased. it can.

[0228] As described above, the shelf boards 6, 11, 12 (excluding the bottom board shelf board 6 as necessary) shown in FIG. 33 are appropriate shelf board supports (not shown). Pair of left and right side edges and It is preferable that the side edge on the side of the back plate 4 or the back plate 4 be supported by the left and right side plates 3, 3 a and Z or the back plate 4. The shelf support is constructed separately from the pair of left and right side plates 3, 3a and Z or the back plate 4, and is detachably attachable to the pair of left and right side plates 3, 3a and Z or the back plate 4. And it is preferable that they are attached so that the attachment position in the up and down direction can be changed continuously or stepwise. Further, the shelf support may be integrally formed with the shelves 6, 11, 12. Alternatively, the shelf support may be configured separately to support the shelves 6, 11, 12. It is also good. For this reason, the shelf boards 6 and 11 can change the mounting position in the vertical direction between the top board 5 and the bottom board 6 continuously or stepwise. Therefore, the distance between each of the shelf boards 6, 11, 12 and the distance between the top board 5 and the top shelf board 11 can be changed continuously or stepwise.

(5) Feeding method of antenna for reader / writer

By feeding one of the first and second loop antennas A and B, the induced current generated in the other loop antenna flows in the negative direction (in other words, the common current direction). . Therefore, it is possible to communicate both the first and second loop antennas A and B of the antenna 15 for the reader / writer with the electronic tag 19 only by feeding power to only one of the loop antennas. However, by alternately feeding the first and second loop antennas A and B, the electronic tag 19 and the first and second loop antennas A and B of the reader / writer antenna 15 are further stabilized. It can communicate well.

Second Embodiment of Second Invention

In the bookcase 1 in the second embodiment shown in FIGS. 42 to 44, as the interference preventing members (in other words, the shielding members) provided on the shelf boards 6, 11 and 12, as shown in FIG. In addition to the conductive and porous first sheet-like member 171 configured in the loop shape as in the first embodiment shown in FIGS. 34 and 35, the conductive configured in the non-loop shape. A second porous sheet-like member 181 is provided. The bookshelf 1 in the second embodiment shown in FIGS. 42 to 43 is substantially the same as the bookshelf 1 in the first embodiment of the third group invention except for the points described below. The configuration of Also, the books 18 in the second embodiment may have substantially the same configuration as the books 18 in the first embodiment of the third group invention. Therefore, in FIGS. The same reference numerals as in FIGS. 33 to 39 denote the same parts, and a description thereof will be omitted as necessary. In the following, only the top shelf 11 will be described, but the remaining shelves 6 and 12 may have substantially the same configuration as the shelf 11 if necessary, and may be configured differently. May be

In the shelf board 11 shown in FIG. 42 and FIG. 44, as the interference preventing member (in other words, the shielding member), the center opening is made separately from the first porous sheet member 171 configured in the loop shape. A second porous sheet-like member 181 having neither the mouth 172 nor the incision is provided. Such a second porous sheet member 181 is, as shown in FIGS. 42 and 44, formed on the lower surface (in other words, the outer surface) of the first porous sheet member 171. It can be attached, such as by being laminated using a second interlayer 182 which may be similar to the interlayer 25 described in Section (C1 (2) above). In FIG. 42 and similar drawings (in other words, FIG. 45 of the third embodiment described later), the second porous sheet member 181 is shown by a two-dot chain line for convenience of illustration. ing.

The second porous sheet-like member 181 has a substantially rectangular shape, a substantially square shape, a substantially rhombic shape, a substantially trapezoidal shape, or any other substantially square shape, a substantially oval shape, a substantially elliptical shape, It may be a strip shape, a colored paper shape, or any other shape such as a semicircular shape. The second porous sheet member 181 is formed in a substantially rectangular shape as shown in FIGS. 42 and 43 in the illustrated embodiment. The length in the depth direction y of the second porous sheet member 181 is, for example, the length in the depth direction y of the first porous sheet member 171 (in other words, the depth direction y of the shelf 11) Length may be substantially the same as in the above. In addition, the length (in other words, the width) of the second porous sheet member 181 in the opening direction X may be, for example, about 55 mm.

The second porous sheet-like member 181 shown in FIGS. 42 to 44 has an end on the left side thereof substantially coinciding with an end on the left side of the first porous sheet-like member 171 and The first porous sheet-like member 171 is interposed between the second intermediate film 182 so that the front end and the rear end thereof substantially coincide with the front and rear ends of the first porous sheet-like member 171, respectively. It is superimposed. Such second interlayer 182 may be any suitable non-conductive material such as PET. The film may also be a force and may be pre-bonded to one or both sides of the second porous sheet member 181 which may be a film. In other words, the left end of the second porous sheet member 181 substantially overlaps the left end of the first porous sheet member 171. Therefore, as shown in FIG. 42, the second porous sheet member 181 overlaps with the second pattern portion 37 of the second loop antenna B! /,! /, But the first. The second pattern portion 37 of the loop antenna A, the pattern portion near the left end of the first pattern portion 35 of the first loop antenna A, and the leftmost base line portion 43 of the first loop antenna A The pattern portion and force near the left end of the inner wall also form a U-shaped cross-section near the left edge 36 and overlap with the left-side projecting portion. In other words, the second porous sheet-like member 181 at least partially overlaps the vicinity of the left end of the first porous sheet-like member 171. The second porous sheet member 181 is preferably partially overlapped with the antenna pattern 31 of the feed loop antenna. Therefore, as described in the item 1 (5) (ie, the item Cl (5)), when feeding only one of the first and second loop antennas A and B, Preferably, only the first loop antenna A is supplied with the first loop antenna A as a feeding loop antenna.

Furthermore, the second porous sheet member 181 shown in FIGS. 42 to 44 is the first porous sheet described in the item 1 (3) (that is, the item C1 (3)). The same material and composition as the rod-like member 171 may be used. The second porous sheet-like member 181 is generally the first porous sheet-like member in the item 1 (3) (that is, the item C1 (3)), also in terms of practicality. No. 171, which satisfies one or a plurality or all of the same numerical ranges as the numerical ranges (including the more preferable numerical ranges) described in the (c) to (h) terms described above Preferred to

Since it is as described above, the reader / writer antenna 15 in the second embodiment shown in FIGS. 42 to 44 has the first embodiment than the case in the first embodiment shown in FIGS. 33 to 39. The magnetic field (in other words, the magnetic flux) generated by each of the substantially U-shaped left projecting portions 37, 35 and 43 of the loop antenna A of the first loop sheet A is obtained by the first porous sheet member 171 alone. It is further weakened by the second porous sheet member 181. Still For the books 18 placed on the shelf 11, the mutual communication between the electronic tag 19 attached to the books 18 and the reader / writer antenna 15 is also effective over the whole shelf 11. It can be carried out.

Third Embodiment of Third and Third Group Inventions

The attachment position of the second porous sheet-like member 181 as the second interference preventing member (in other words, the shielding member) is limited to that of the second embodiment shown in FIGS. 42 and 44. Various changes and modifications are possible, as exemplified by the third embodiment shown in FIGS. The bookshelf 1 in the third embodiment shown in FIGS. 45 and 46 has substantially the same configuration as the bookshelf 1 in the second embodiment described above except for the points described below. Good. Further, the books 18 in the third embodiment may have substantially the same configuration as the books 18 in the first embodiment described above. Therefore, in FIG. 45 and FIG. 46, the same reference numerals are attached to the same parts as in FIG. 33 to FIG. 44, and the explanation thereof will be omitted as necessary. In the following, only the top shelf 11 will be described, but the remaining shelves 6 and 12 may have substantially the same configuration as the shelf 11 if necessary. It may be a different configuration.

In the shelf board 11 in the third embodiment shown in FIGS. 45 and 46, the second porous sheet-like member 181 is the same as that of the shelf board 11 in the second embodiment shown in FIGS. Compared to the case, for example, it is offset by about 10 mm to the right from the left side, generally along the frontal direction X, and from the left side. Therefore, the second porous sheet member 181 does not only overlap with the substantially U-shaped left projecting portions 37, 35, 43 described in the second term (ie, the C2 term), but The second pattern portion 37 of the second loop antenna B is also overlapped.

As described above, in the reader / writer antenna 15 in the third embodiment shown in FIGS. 45 and 46, the first embodiment is more effective than in the second embodiment shown in FIGS. 42 and 44. The second pattern portion 37 of the second loop antenna B which is only divided by the magnetic field (in other words, the magnetic flux) generated by the substantially U-shaped left projecting portion 37, 35, 43 of the above loop antenna A. The magnetic field (in other words, the magnetic flux) generated by the second porous sheet member 181 is also weakened by the first porous sheet member 171 alone. However, for the books 18 placed on the shelf 11, the entire shelf 11 is Therefore, mutual communication between the electronic tag 19 attached to the books 18 and the reader / writer antenna 15 can be effectively performed.

Operation experiment of the reader / writer antenna according to the fourth and third group inventions

47 shows an upward direction from the antenna center line 45 according to the position (horizontal axis) of the direction X of the frontage of the antenna 15 for reader / writer of the first to third embodiments of the third group invention with the electronic tag 19 The maximum communicable distance (vertical axis) in the direction (in other words, the direction orthogonal to both the frontage direction X and the depth direction _y ) is shown. In this case, the maximum communicable distance indicates the distance from the upper surface of the shelf 11 to the lower side of the electronic tag 19 in the upward direction along the above direction. Specifically, the maximum communicable distance is the _y - _z plane (in other words, when the opening direction of the shelf plate 11 is the X direction, the depth direction is the y direction, and the vertical direction is the z direction). The maximum communication distance (height from the shelf board 11 to the lower side of the electronic tag 22) in the z direction of the electronic tag 22 parallel to the front cover 23 side or the back cover 24 side of the books 21) is there. The height direction (vertical axis) in FIG. 47 indicates the maximum communicable distance in the vertical direction of the shelf board 11 according to the position in the frontage direction X. Further, a minus area in the position in the frontal direction X (horizontal axis) indicates the direction of the shelf plate 11 and the outside reading range on the left side.

In FIG. 47, the broken line graph of the reference example 1 of the third group invention shows the shielding shown in FIG. 37 (see also FIG. 3) in the first embodiment described in the above-mentioned 1st term (ie, C1 term). It is about the antenna 15 for reader / writers of the shelf board 11 without material. The broken line graph of the first embodiment is the reader / writer antenna 15 of the shelf 11 with the shielding material shown in FIGS. 34 and 35 in the first embodiment described in the first term (that is, C1). It is about. In addition, the broken line graph of the second embodiment relates to the reader / writer antenna 15 of the shelf 11 with the shielding material shown in FIGS. 42 and 44 in the second embodiment described in the second term (that is, the C2 term). belongs to. Furthermore, the broken line graph of the third embodiment corresponds to the antenna 15 for reader / writer of the shelf 11 with the shielding material shown in FIGS. 45 and 46 in the third embodiment described in the third term (that is, the C3 term). belongs to.

[0241] FIG. 47 is described to correspond to the bookshelf 1 shown in FIG. And in this figure 47 Here, reference numeral 3a indicates the common side plate 3a shown in FIG. Further, in FIG. 47, the two symbols 41 on the left side of the common side plate _3a are provided on the shelf plate 11 of the first bookshelf portion la shown in FIG. A center line (solid line) in the width direction of the pattern portion 41 and a center line (broken line) in the width direction of the fourth pattern portion 41 of the second loop antenna B are shown. Further, in FIG. 47, two symbols 37, two symbols 46, two symbols 47, and one symbol 46 of the common side plate 3a from the left to the right toward the right in FIG. It is provided on the shelf plate 11 of the second bookshelf part 1b shown, and shows the center lines in the width direction of the items described in the following (a) to (d).

(a) Second pattern portion 37 of the first loop antenna A (solid line) and second pattern portion 37 of the second loop antenna B (dashed line),

(b) The first rising portion 46 (solid line) of the leftmost bending portion 44 toward the first loop antenna A and the first of the leftmost bending portion 44 toward the second loop antenna B Rising part 4 6 (broken line),

(c) The second rising portion 47 (solid line) of the leftmost bend 44 toward the first loop antenna A and the second turn 44 of the leftmost bend 44 toward the second loop antenna B Rising part 4 of 7 (broken line), and

(d) First rising portion 4 6 (solid line) of the second bent portion 44 from the left toward the first loop antenna A.

Fig. 47 shows the maximum communicable distance when power is alternately supplied to the first and second antennas A and B of the reader / writer antenna 15 of only the second bookshelf portion 1b (the upward direction as described above Maximum communicable distance) in From the graph of the maximum communicable distance shown in FIG. 47, the items described in the following items (e) to (i) can be understood.

(e) In the case of the shelf board 11 as the reference example 1 shown in FIGS. 37 and 38, when the reader / writer antenna 15 of the second bookshelf portion 1b is supplied with power, the second bookshelf portion lb The magnetic field (in other words, the magnetic flux) generated by the reader / writer antenna 15 is used for the reader / writer antenna 15 of the first bookshelf portion la adjacent to the left side of the reader / writer, and for the reader / writer of the shelf board one step above. Interference with the magnetic field (in other words, magnetic flux) generated by antenna 15 with a degree of force, (f) In the case of the shelf board 11 in the first embodiment shown in FIGS. 34 and 35, the interference described in the item (e) does not occur to a considerable extent.

(g) In the case of the shelf board 11 in the second embodiment shown in FIG. 42 to FIG. 44, the interference described in the item (e) above is the case of the first embodiment shown in FIG. 34 and FIG. It will not occur more than

(h) In the case of the shelf board 11 in the third embodiment shown in FIG. 45 and FIG. 46, the interference described in the above item (e) is better than in the case of the second embodiment shown in FIG. Substantially disappear without any further occurrence, and

(i) In the case of the shelf board 11 in any one of the first embodiment shown in FIGS. 34 and 35, the second embodiment shown in FIGS. 42 to 44 and the third embodiment shown in FIGS. 45 and 46 However, for the books 18 placed on the shelf board 11, mutual communication between the electronic tag 19 attached to the books 18 and the reader / writer antenna 15 is still effective over the entire shelf board 11. What you can do

[0243] FIG. 48 shows the position of the opening direction X with the electronic tag 22 (specifically, the lower side portion of the electronic tag 22) of the reader / writer antenna 15 of the first and third embodiments of the third group invention. It shows the maximum communicable distance (vertical axis) in the depth direction y according to. In this case, the maximum communicable distance is a distance from the rear edge 34 of the shelf 11 (in other words, the rear edges of the first and second porous sheet members 171 and 181) along the depth direction y. It indicates the distance to In addition, in FIG. 48, each of Reference Example 1 and Examples 1 to 3 means the same as in the case of FIG. Also, each of symbols 41, 3a, 37, 46 and 47 means the same as in FIG. 47 [Fig. 48].

[0244] FIG. 48 shows the maximum communicable distance when power is supplied alternately to the first and second antennas B of the reader / writer antenna 15 of the second bookshelf portion lb (in the depth direction y as described above Indicates the maximum communicable distance). From the graph of the maximum communicable distance shown in FIG. 48, the items described in the following items (j) and (k) can be understood.

(j) In the case of the shelf board 11 as the reference example 1 shown in FIG. 37 (see also FIG. 3), when the reader / writer antenna 15 of the second bookshelf portion 1b is supplied with power, the second bookshelf The magnetic field (in other words, the magnetic flux) generated by the reader-writer antenna 15 of the part lb is adjacent to the back side of this Interference with the magnetic field (in other words, the magnetic flux) generated by the reader / writer antenna 15 (in particular, the end in the front direction X) on the shelf plate of the bookshelf portion of another bookshelf And

(k) Shelf 11 in the first embodiment shown in FIGS. 34 and 35; shelf 11 in the second embodiment shown in FIGS. 42 to 44; and in the third embodiment shown in FIGS. 45 and 46 In each case of the shelf 11, the interference described in (j) above shall not occur to a considerable extent.

[0245] FIG. 49 shows a graph similar to that of FIG. 47 for Reference Example 2 of the third group invention. In this embodiment, in the first embodiment shown in FIGS. 34 and 35, the porous sheet-like member 171 with the central opening 172 omitted is used as the interference preventing member. Therefore, in the case of the porous sheet-like member 171 of the second embodiment, the portion corresponding to the central opening 172 is also formed in a mesh structure. And, from FIG. 47, the matters described in the following items (1) and (m) can be understood.

(1) In the case of the shelf board 11 shown as this reference example 2, when power is supplied to the reader / writer antenna 15 of the second bookshelf portion lb, this occurs at the reader / writer antenna 15 of the second bookshelf portion lb. That the magnetic field (in other words, the magnetic flux) hardly interferes with the magnetic field (in other words, the magnetic flux) generated by the reader / writer antenna 15 of the first bookshelf part la adjacent to the left side of this and

(m) In the case of the shelf board 11 shown as the above-mentioned reference example 2, it is necessary to take some measures to make the electronic tag 19 attached to the books 18 and the reader / writer antenna 15 communicate favorably with each other. To be

FIG. 50 shows a graph similar to that of FIG. 47 for Reference Example 3 of the third group invention. In the third embodiment shown in FIGS. 45 and 46, the first porous sheet-like member 171 is omitted, and the second porous sheet-like member 181 is used as an interference preventing member. Use only. And, from this Fig. 50, the items described in the following (n) can be understood.

(n) In the case of the shelf board 11 shown as this reference example 3, when power is supplied to the reader / writer antenna 15 of the second bookshelf portion lb, the reader / writer antenna 15 of the second bookshelf portion 15 The magnetic field (in other words, the magnetic flux) generated in the above no longer interferes with the magnetic field (in other words, the magnetic flux) generated in the reader / writer antenna 15 of the first bookshelf part la adjacent to the left side of this However, basically, almost the same graph as in Reference Example 1 (shown in Figure 47) shown in Figure 37 (see also Figure 3) should be obtained.

FIG. 51 shows a graph similar to that of FIG. 45 for Reference Example 4 of the third group invention. In this first embodiment shown in FIGS. 34 and 35, the porous sheet-like member 171 is not closed loop-shaped but open-looped by providing the lacked portion in the porous sheet-like member 171. It is configured in the form of Specifically, the absence portion is formed as a slit having a width of about 7.5 mm on the side 171a (see FIG. 43) on the side of the edge 40 on the right side of the porous sheet-like member 171. And, from FIG. 51, the items described in the following item (o) can be understood.

(o) In the case of the shelf board 11 shown as this reference example 4, the case of the reference example 1 (shown in FIG. 47) shown in FIG. 37 (see also FIG. 3) is almost the same as described in the above (e). Similar interference may occur.

The following Table 1 shows the average of the maximum communicable distances on the shelf board 11 (plus area in the position of the frontage X) shown in FIGS. 47 to 51, respectively. And so on are shown as a table. In this Table 1, in the vertical direction, the maximum value, the average value and the minimum value of the maximum communicable distance (vertical axis) in FIGS. 47 and 49 and FIGS. 49 to 51 are shown. In the case of X in the left-right direction (ie frontage direction), the Omm force at the position (horizontal axis) in the frontage direction in Figs. 45 and 49 to 51 also indicates the maximum communicable distance in the direction toward 100mm. There is. In the case of y in the front-rear direction (ie, in the depth direction), the maximum communicable distance in FIG. 48 is shown.

[table 1] Maximum communicable distance (mm)

Also, in Table 2 below, when the reader / writer antenna 15 laid on each of the shelf boards 6, 11 and 12 is disposed adjacent to each other in the vertical and horizontal directions and in the front and back directions, the relay writer can be used between the shelf boards. The required minimum separation distance between the shelf boards necessary to prevent mutual interference by the antenna 15 is shown. That is, the distance in each direction required to prevent mutual interference between adjacent upper and lower, left and right, and front and rear shelves (specifically, in the vertical direction, the top plate 5 and the top plate 5 and The distance between the shelf plates 6, 11 and 12 and the thickness of the common side plate 3a in the left-right direction and the thickness of the back plate 4 in the front-rear direction are shown.

[Table 2]

From the above Table 1 and Table 2, the items described in the following (p) and (q) can be seen.

(p) The required minimum separation distance shown in Table 2 substantially corresponds to the maximum communicable distance shown in Table 1, and

(q) In the case of Examples 1 to 3, the required minimum separation distance in the vertical and horizontal directions and the front and back directions can be made smaller than in Reference Example 1 (in particular, the vertical direction will be referred to). In Example 1, when many paperback books 18a (height 148 mm) are arranged on a shelf board, the height of the paperback books 18a is more than double the height of the paperback books 18a between the paperback book 18a and the shelf board of the upper row. In the first to third embodiments, it is not necessary to provide the extra space in the vertical direction, and the paperback book 18a is placed on the shelf board so that no gap is generated in the vertical direction. It is possible to arrange many books). [0251] 5, Additional Modifications of the Third Group Invention

Hereinabove, the first to third embodiments of the third group invention of the present invention have been described in detail. However, the third group invention of the present invention is not limited to the first to third embodiments, and various changes and modifications are possible based on the spirit of the invention described in the claims. is there.

For example, in the first to third embodiments of the third group invention described above, the shelf boards 6, 11 and 12 in the upper and lower three stages are provided on the bookshelf 1. However, the shelf board does not necessarily have to be provided in the upper and lower three stages. In the case where two or four or more other multiple stages may be provided in the upper and lower sides, it may be only one.

Further, in the first to third embodiments of the third group invention described above, the bookshelf 1 is constructed from the first and second bookshelf portions la and lb adjacent to each other in the left-right direction. . However, the bookshelf 1 may be configured to have three or more bookshelf parts that are sequentially adjacent in the left-right direction, and further, two or more bookshelf parts that are adjacent to each other back to back in the front-rear direction It may be In addition, the plurality of book rack portions adjacent to each other may be adjacent to each other in the left-right direction and in the Z direction or in the front-rear direction.

In the first to third embodiments of the third group invention, the heights of the corresponding shelf plates 6, 11 and 12 of the first and second bookshelf portions la and lb are respectively set. Were almost identical to each other. However, the heights of at least one shelf plate of the corresponding shelf plates 6, 11, 12 of the first and second bookshelf parts la, lb may be different from each other.

In the first to third embodiments of the third group invention, the third group invention of the present invention is applied to the bookshelf 1. However, the third group invention of the present invention relates to other article placement shelves such as a display shelf, a product shelf, and a document management shelf, a counter stand such as a reception counter of a library, a table, a desk, etc. It can be applied to a table on which various articles are placed, and it can also be used as a reading antenna for physical distribution in manufacturing lines for pharmaceutical products etc., a reading antenna for parts management in factory lines, and a gate antenna. In addition, it can also be used as an antenna for an electronic tag incorporated into the electronic tag. Therefore, the reader antenna according to the third group invention of the present invention is a shelf board of the bookshelf 1 Not limited to substantially rectangular substrates such as 6, 11 and 12, they may be incorporated into substrates having a substantially square shape, a substantially parallelogram shape, a substantially trapezoidal shape, a substantially oval shape, or other various shapes. it can.

In the first to third embodiments of the third group invention, the substantially loop shaped antenna pattern 31 of the first and second antennas A and B of the reader / writer antenna 15 is , One-roll one. However, the antenna pattern 31 may be a plurality of turns wound a plurality of times in a spiral or the like. Further, this antenna pattern 31 may be various ones shown in the drawings such as FIG. 12C exemplified in the second group invention of the present invention which is not limited to the one exemplified in FIG.

In the first to third embodiments of the third group invention, the antenna pattern elements 35 and 37 of the first and second antennas A and B of the reader / writer antenna 15 respectively. Most of the connections between them, such as 39, 41, 43, 46 to 48, etc., were configured in a substantially rounded shape with less roundness. However, one or more or all of these connection sites may be further rounded.

In the first to third embodiments of the third group invention, the number of bent portions 44 of each of the first and second antennas A and B of the reader / writer antenna 15 is set as I made four each. However, the number of the bending portions 44 does not necessarily have to be four, but may be one, in some cases where it may be any number greater or smaller than that.

In the first to third embodiments of the third group invention, the first porous sheet-like member 171 is provided with a single central opening 172. However, the number of central openings 172 provided in the first porous sheet-like member 171 may be two or more, which need not be one. For example, in the central opening 172 shown in FIG. 34, one or a plurality of strip portions extending substantially along the depth direction y, or in the central opening 172 one or more extending substantially along the frontal direction X It is possible to provide the first porous sheet-like member 171 with two or more central openings 172 by providing the belt-like portion of the first porous sheet-like member 171 or the like.

Further, in the first to third embodiments of the third group invention described above, the first loop Each of the pair of terminal portions 32a and 32b of the antenna A and the pair of terminal portions 32a and 32b of the second loop antenna B is provided in the vicinity of the edge 58 on the right side of the shelf board 11. However, each of the pair of terminal portions 32a, 32b of the first and second loop antennas A, B is the rear edge 52 of the shelf board 11, the left edge 36, the front edge 38 and the It can be provided near any edge of the right edge 40. For example, in the shelf board 11 shown in FIG. 34, the pair of terminal portions 32a and 32b of the second loop antenna B is substantially symmetrical with the pair of terminal portions 32a and 32b of the first loop antenna A. The second loop antenna B may be provided near the left edge 36 facing the pair of terminal portions 32a and 32b.

In the first to third embodiments of the third group invention, the aperture ratio of the first porous sheet-like member 171 (ie, the above-mentioned (C1 (3)) h) the opening ratio described in paragraph h) was made uniform throughout. However, the opening ratio of the first porous sheet-like member 171 may not necessarily be totally uniform, but may be partially different. For example, in the first embodiment of the third group invention, a portion of the first porous sheet-like member 171 (specifically, the second or third of the third group invention described above). In the embodiment, only by using the first porous sheet-like member 171 as an interference preventing member by reducing the open area ratio of the second porous sheet-like member 181). The same effects as those of the second or third embodiment of the third group invention can be obtained.

In the second and third embodiments of the third group invention, the opening ratio of the second porous sheet member 181 is the opening ratio of the first porous sheet member 171. It was almost identical and totally uniform. However, the aperture ratio of the second porous sheet member 181 does not necessarily have to be substantially the same as the aperture ratio of the first porous sheet member 171, and also needs to be uniform throughout. Not necessarily.

In the first to third embodiments of the third group invention, the first porous sheet-like member 171 is disposed on the lower surface of the antenna formation target member such as the shelf board 11 or the like. did. However, the first porous sheet-like member 171 can also be disposed on the upper surface of the antenna formation target member depending on the application etc. Furthermore, upper and lower pairs of the upper and lower surfaces of the antenna formation target member It is a matter to set up. In the second and third embodiments of the third group invention, the second porous sheet member 181 is disposed on the lower surface of the antenna formation target member such as the shelf board 11 or the like. However, the second porous sheet-like member 181 can be disposed on the upper surface of the antenna formation target member depending on the application etc. Furthermore, the upper and lower surfaces of the antenna formation target member are vertically paired. You can set it up yourself.

In the second and third embodiments of the third group invention, the second porous sheet member 181 is interposed between the second interlayer 182 and the first porous sheet member. I tried to stick to the member 171. However, the second porous sheet member 181 can be directly bonded to the first porous sheet member 171 with a suitable adhesive.

In the second and third embodiments of the third group invention, the second porous sheet member 181 is disposed on the outer surface of the first porous sheet member 171. . However, if necessary, the second porous sheet member 181 is an inner surface of the first porous sheet member 171 (specifically, the lower plate 24 and the first porous sheet member Between the first porous sheet member 171 and the outer surface of the upper plate 23 (specifically, the outer surface of the upper plate 23). it can.

Further, in the second and third embodiments of the third group invention described above, the second porous sheet member 181 is used as the antenna pattern 31 of the reader / writer antenna 15 in the length direction X. It was placed only near one end (specifically, near the end to the left). However, the second porous sheet member 181 can be disposed only near the other end in the longitudinal direction X of the antenna pattern 31 of the reader / writer antenna 15, and furthermore, both ends A pair may be provided in each of the vicinity (specifically, near both left and right ends toward the left and towards the right).

Claims

The scope of the claims

[1] A shelf board with an antenna, which is used for placing an article to be stored in the article shelf and on which a reader antenna is provided,

The above reader antenna also has multiple antenna powers,

The antenna pattern of the first antenna of the plurality of antennas is a first pattern portion extending in the direction of the front of the first plate extending substantially in the direction of the front of the shelf plate. And a second pattern portion extending in the substantially backward direction on a side of a second edge portion extending in the substantially depth direction of the shelf plate, and extending substantially in the direction of the front opening of the shelf plate; A third pattern portion extending in the direction of the foremost portion of the third edge opposite to the first edge, and a portion extending in the substantially depth direction of the shelf plate and the second And the fourth pattern portion extending in the substantially depth direction is sequentially connected to the side of the fourth edge opposite to the edge of the second edge,

The antenna pattern of the second antenna of the plurality of antennas includes the first pattern portion extending in the direction substantially toward the front of the third edge, and the side of the second edge The second pattern portion substantially extending in the depth direction, the third pattern portion substantially extending in the direction of the first edge, and the fourth edge portion are substantially the same. The fourth pattern portion extending in the almost depth direction is configured by being sequentially connected,

The plurality of first and Z or third pattern portions of the first antenna and the plurality of first and Z or third pattern portions of the second antenna may extend in the direction of the front opening. Each of the baseline sections and at least one bend section connecting the plurality of baseline sections together;

Each of the bent portions has a convex shape provided with a first and a second rising portion and a connecting portion connecting the tips of the first and the second rising portions to each other. A shelf board with an antenna for article management shelves.

[2] In each of the unit areas when the reader antenna provided on the shelf plate is divided into unit areas by the virtual unit area dividing lines extending in the substantially depth direction, the first antenna The first pattern portion of the second antenna and the second Any one of the third pattern portions and the force substantially extend along the first edge of the shelf and the other extends substantially in the direction of the aperture. A plurality of base line portions and at least one of the bent portions connecting the plurality of base line portions to each other;

In each of the unit regions, one of the first pattern portion of the first antenna and the third pattern portion of the second antenna is the first pattern of the first antenna. When it is the pattern portion of 1, the first pattern portion force of the second antenna extends in the direction of the substantially opening substantially along the third edge portion of the shelf plate, and The third pattern portion force of the antenna, the plurality of base line portions extending substantially in the front direction, and the at least one bending portion connecting the plurality of base line portions to each other In each of the unit regions, one of the first pattern portion of the first antenna and the third pattern portion of the second antenna is the second antenna. When it is the third pattern portion of the antenna, the force of the third pattern portion of the first antenna extends in the direction of the opening substantially along the third edge of the shelf plate, and The first pattern partial force of the second antenna, The at least one bend in which the plurality of baseline portions extending substantially in the front direction and the plurality of baseline portions are connected to each other. The shelf with antenna according to claim 1, characterized in that it comprises:

[3] The convex-shaped bending portion force of the second antenna When viewed in plan, with respect to the convex-shaped bending portion of the first antenna, the displacement is substantially offset in the direction of the frontage. The antenna according to claim 1 or 2, characterized in that it has a portion overlapping and a portion not overlapping with the bent portion of the convex shape of the first antenna. Shelf with tena.

[4] A force whose width in the front direction of the overlapping portion is a value obtained by dividing the width of the bent portion of the convex shape by the number of antennas of the plurality of antennas or a fluctuation range of ± 25% with respect to this value The shelf board with an antenna according to claim 3, which is a value within a numerical range having. [5] Any one of the second pattern portion of the first antenna and the second pattern portion of the second antenna substantially along the second edge of the shelf plate And the other extends in the substantially depth direction on the side opposite to the one of the second edges.

Any one of the fourth pattern portion of the first antenna and the fourth pattern portion of the second antenna The force substantially along the fourth edge of the shelf plate It extends in a direction, and the other extends in the substantially depth direction opposite to the fourth edge of any one of the above-mentioned ones. A shelf board with an antenna according to any one of the four items.

[6] In each of the plurality of antennas constituting the reader antenna, each of the plurality of antennas does not have a crossing portion in a planar view, of

V, or A shelf board with an antenna described in one.

[7] The thickness direction of the shelf board of one of the plurality of antennas constituting the reader antenna and one other antenna of the plurality of antennas in the thickness direction of the shelf board A mutual distance is 70 mm or less, The claim 1 characterized by the above-mentioned.

The antenna-mounted shelf board according to any one of the items 1 to 6.

[8] The main component of the shelf plate is a glass plate,

Antenna shelf board according to any one of 7 items.

[9] The force described in any one of the items 1 to 7, characterized in that each of at least antenna patterns of the plurality of antennas is constituted by a power wire lead. Shelf with antenna.

[10] A shelf board with an antenna according to claim 9, wherein a cross-sectional diameter of the wire conductor is 1. O mm or less.

[11] The shelf with an antenna according to any one of claims 9 to 10, wherein a cross-sectional diameter of the wire conductor is 0.02 mm or more.

[12] One of any one of claims 1 to 11, wherein the plurality of antennas constituting the reader antenna are configured to operate in sequence. Antenna with shelf board. [13] A shelf board with an antenna according to any one of claims 1 to 12, characterized in that it is an antenna for reader / card reader / writer.

[14] An article management shelf comprising at least one shelf with an antenna according to any one of claims 1 to 13 as a shelf.

[15] A shelf board with an antenna, which is used for placing an article to be stored in the article shelf and on which a reader antenna is provided,

The above reader antenna also has multiple antenna powers,

The antenna pattern of the first antenna of the plurality of antennas is a first pattern portion extending substantially in the front direction substantially along the first edge extending substantially in the front direction of the shelf plate. And a second pattern portion extending in the substantially depth direction on a side of the second edge portion extending in the substantially depth direction of the shelf plate, and extending in the substantially opening direction of the shelf plate, A third pattern portion opposite to the first edge on the side of the third edge extends in the substantially front direction, a third pattern portion extends in the substantially depth direction of the shelf plate, and the second The fourth edge portion opposite to the edge portion is configured by being sequentially connected to the fourth pattern portion extending in the substantially depth direction.

The antenna pattern of the second antenna of the plurality of antennas includes a first pattern portion extending substantially along the third edge and a side of the second edge. The second pattern portion extending in the substantially depth direction, the third pattern portion extending in the direction of the front portion of the first edge portion, and the side of the fourth edge portion are the above. A fourth pattern portion extending substantially in the depth direction is configured by being sequentially connected,

The third pattern portion of the first antenna and the third pattern portion of the second antenna are a plurality of base line portions extending substantially in the direction of the opening, and a plurality of the plurality of base line portions. The baseline sections are connected to each other and each comprises at least one bend,

Each of the bent portions has a convex shape provided with a first and a second rising portion and a connecting portion connecting the tips of the first and the second rising portions to each other. A shelf board with an antenna for article management shelves. [16] Each of the base line portion of the third pattern portion of the first antenna and the connection portion of the bending portion of the third pattern portion of the second antenna respectively. Extending between the first pattern portion of the antenna and the imaginary shelf centerline extending in the direction of the front of the shelf;

Each of the connection portion of the bent portion of the third pattern portion of the first antenna and the base line portion of the third pattern portion of the second antenna is the first antenna The shelf with an antenna according to claim 15, characterized in that it extends between the first pattern portion of and the shelf centerline.

[17] The convex-shaped bending portion force of the second antenna When viewed in plan, with respect to the convex-shaped bending portion of the first antenna, the displacement is substantially offset in the direction of the frontage. The optical fiber according to claim 15 or 16, characterized in that it has a portion overlapping and a portion not overlapping with the bent portion of the convex shape of the first antenna. Shelf with shelf.

[18] The width of the overlapping portion in the front direction is a force obtained by dividing the width of the bent portion of the convex shape by the number of the plurality of antennas, or a fluctuation range of ± 25% with respect to this value. The shelf with an antenna according to claim 17, which is a value within a numerical range having.

[19] Any one of the second pattern portion of the first antenna and the second pattern portion of the second antenna substantially along the second edge of the shelf plate And the other extends in the substantially depth direction on the side opposite to the one of the second edges.

Any one of the fourth pattern portion of the first antenna and the fourth pattern portion of the second antenna The force substantially along the fourth edge of the shelf plate It extends in a direction, and the other extends in the substantially depth direction opposite to the fourth edge of any one of the above four. Antenna-mounted shelf board according to any one of the items 18.

[20] Each of the plurality of antennas constituting the reader antenna does not have a crossing portion in plan view, and each of the plurality of antennas does not have an intersection portion. A shelf board with an antenna according to any one of the above.

[21] In the thickness direction of the shelf board, one antenna out of the plurality of antennas constituting the reader antenna and another antenna out of the plurality of antennas in the thickness direction of the shelf board The shelf with an antenna according to any one of claims 15 to 20, wherein a mutual distance is 70 mm or less.

[22] The shelf with an antenna according to any one of claims 15 to 21, characterized in that the main component of the shelf is a glass plate.

[23] A method according to any one of claims 15 to 21, characterized in that each of at least antenna patterns of the plurality of antennas is constituted by a power wire conductor. Shelf with antenna.

[24] A shelf board with an antenna according to claim 23, wherein a cross-sectional diameter of the wire conductor is 1. O mm or less.

[25] The shelf with antenna according to claim 23 or 24, wherein a cross-sectional diameter of the wire conductor is not less than 0.02 mm.

[26] The apparatus according to any one of claims 15 to 25, wherein the plurality of antennas constituting the reader antenna are configured to operate in sequence. Shelf with antenna described.

[27] The above-mentioned antenna for reader / card reader / writer.

The antenna-mounted shelf board according to any one of the items 15 to 26.

[28] An article management shelf comprising at least one shelf with an antenna according to any one of claims 15 to 27 as a shelf.

[29] In a reader antenna comprising first and second antennas respectively formed on the antenna formation target members in a state of being mutually insulated and superimposed on each other,

The induced current generated in the second antenna receives the magnetic field generated by the first antenna when power is supplied to the first antenna, and the induced current generated in the second antenna is transmitted to the effective antenna pattern element of the second antenna. The shape of the antenna pattern of each of the first and second antennas and the first and second antenna patterns so that the two antennas flow in a common current direction. A reader antenna characterized in that the mutual arrangement of the second antennas is selected.

[30] The antenna pattern of the first antenna and the antenna pattern of the second antenna have antenna pattern shapes substantially the same as or similar to each other, and the antenna of the first antenna The pattern and the antenna pattern of the second antenna may be the same as the effective antenna pattern element of the effective antenna pattern element that extends along at least the first direction. The antenna for a reader according to claim 29, characterized in that they are arranged one on top of the other so as to be offset from each other.

[31] When power is supplied to any one of the first and second antennas, the antenna formation surface of the antenna formation target member and a second direction orthogonal to the first direction The first and second antennas are respectively configured such that a first magnetic field component generated parallel to both increases and decreases at a substantially constant interval in the second direction, and the antenna pattern of the first antenna is formed. The area weakening in the second direction of the first magnetic field component and the area weakening in the second direction of the first magnetic field component of the antenna pattern of the second antenna alternate with each other. 30. The reader antenna according to claim 30, wherein the first antenna and the second antenna are respectively disposed as in

32. The reader antenna according to claim 31, wherein the first magnetic field component is substantially uniform in the first direction.

[33] A length force in the second direction of the antenna formation target member, or a length equal to or substantially the same as a length in the first direction of the antenna formation target member. Range A reader antenna according to clause 31 or clause 32.

[34] When power is supplied to any one of the first and second antennas, the antenna formation target member is parallel to both the antenna formation surface of the target member and the first direction. The first and second antennas are respectively configured such that the resulting second magnetic field component increases and decreases in the first direction, A region weakening in the first direction of the second magnetic field component of the antenna pattern of the first antenna, and a region of the antenna pattern of the second antenna.

The first antenna and the second antenna are respectively disposed such that regions weakening in the first direction of the two magnetic field components are alternately generated. Reader antenna according to claim 31 or 33.

[35] The reader antenna as set forth in [34], wherein the second magnetic field component is approximately uniform in the second direction.

[36] Any one of claims 29 to 35, characterized in that power is supplied to only one of the first and second antennas. Reader antenna described in (1).

[37] A capacitor for a resonant circuit is connected between a pair of terminal portions of the other of the first and second antennas, characterized in that a capacitor for a resonant circuit is connected. The reader antenna according to any one of the above.

[38] The reader antenna according to any one of claims 29 to 37, characterized in that the first and second antennas are alternately fed. .

[39] The reader antenna according to any one of claims 29 to 38, characterized in that it is configured as the above-mentioned reader antenna carder writer antenna.

[40] The antenna formation target member is a shelf board of an article placement shelf or a bedplate of an article placement table, and the main component of the shelf board or the bedplate is a transparent non-conductive material, The antenna for reader according to any one of claims 29 to 39, characterized in that at least an antenna pattern of at least antenna pattern of the second antenna and a force of the second antenna are also configured.

[41] The reader antenna as set forth in [41], wherein a cross-sectional diameter of the wire conductor is not more than 0.50 mm.

[42] The antenna for reader according to [40] or [41], wherein a cross-sectional diameter of the wire conductor is 0.02 mm or more.

[43] The first and second antennas are stacked on each other with an insulating layer interposed therebetween. 43. The reader antenna according to any one of claims 29 to 42, which is provided between a pair of glass plates.

[44] The terminal portion of the first antenna and the terminal portion of the second antenna each have one and the other edges in the length direction of the antenna formation target member, and the back side in the width direction 43. The leader antee according to any one of claims 29 to 43, characterized in that the medium force with the edge of the head is provided at any one selected edge. Na.

[45] A reader antenna according to any one of claims 29 to 44 is formed! /, And a shelf board is provided as the antenna formation target member! // An article placement shelf with an antenna characterized by

[46] A reader antenna as set forth in any one of claims 29 to 44 is formed! / A base plate provided with said antenna as said antenna formation target member! An article mounting table with an antenna characterized by

[47] The first and second antennas are formed on the antenna formation target member in a state of being insulated from each other and overlapping each other,

Each of the first and second antennas is a reader antenna comprising at least one substantially loop shaped antenna pattern,

Each of at least one of the substantially loop shaped antenna patterns of the first antenna and at least one of the substantially loop shaped antenna patterns of the second antenna is a first one of the antenna formation target members. Pattern portion provided on the first side in the second direction, and second pattern provided on the first side in the second direction orthogonal to the first direction of the antenna formation target member A portion, a third pattern portion provided on the second side opposite to the first side in the first direction of the antenna formation target member, and the third pattern portion of the antenna formation target member A fourth pattern portion provided on the second side opposite to the first side in the two directions, and at least one of the first to fourth pattern portions of the first antenna One and the above At least one of the first to fourth pattern portions of the two antennas that roughly corresponds to the at least one pattern portion is a plurality of intermittently disposed one another. The first antenna and the second antenna substantially correspond to each other in the baseline portion of the book and at least one bent portion provided between the plurality of baseline portions. , Respectively,

Each of the bends is configured in a generally convex shape with first and second raised portions respectively;

The first rising portion or the second rising portion of the first antenna is between the first rising portion corresponding to that of the second antenna and the second rising portion corresponding thereto. An antenna for a reader, which is disposed in

[48] A length force in the second direction of the antenna formation target member, or a length equal to or substantially the same as a length in the first direction of the antenna formation target member. Range A reader antenna according to clause 47.

[49] Each of the bent portions has a connecting portion connecting the first rising portion and the second rising portion to configure each of the bent portions in the substantially convex shape. 49. The reader antenna according to claim 47 or 48, wherein each of the connection parts extends along substantially the second direction.

[50] Each of the first and second rising portions extend substantially along the first direction, [47], [48] or [49]. Reader antenna described in.

[51] Some or all of the first and second rising portions extend obliquely with respect to the first direction,

The angle of inclination is in the range of 15 ° to 45 °, more preferably in the range of 20 ° to 40 °, and still more preferably in the range of 25 ° to 35 °. , A reader antenna according to paragraph 48 or 49.

[52] Each of the first and second antennas is provided with one of the substantially loop-shaped antenna patterns,

The first pattern portion of the substantially loop shaped antenna pattern of each of the first and second antennas extends approximately along the second direction, respectively; Above the substantially loop-shaped antenna pattern of each of the antenna Each of the second and fourth pattern portions of the run extends approximately along the first direction, respectively;

The third pattern portion of the substantially loop shaped antenna pattern of each of the first and second antennas is provided between a plurality of base line portions and the plurality of base line portions. And at least one bend, each of the first antenna and the second antenna substantially corresponding to each other,

52. The force according to any one of claims 47 to 51, wherein each of the bent portions is formed in a substantially convex shape so as to protrude toward the first pattern portion. Reader antenna described in (1).

[53] Each of the first and second antennas is provided with one of the substantially loop-shaped antenna patterns,

The first pattern portion of the generally loop shaped antenna pattern of the first antenna extends generally along the second direction,

Each of the second and fourth pattern portions of the substantially loop shaped antenna pattern of each of the first and second antennas extends approximately along the first direction, respectively;

The third pattern portion of the generally loop shaped antenna pattern of the second antenna extends generally along the second direction,

Each of the third pattern portion of the first antenna and the first pattern portion of the second antenna is provided between a plurality of baseline portions and the plurality of baseline portions. At least one of the bent portions, each corresponding approximately to each other between the first antenna and the second antenna,

The bent portion of the first antenna is formed in a substantially convex shape so as to protrude toward the first pattern portion of the first antenna;

The bent portion of the second antenna is configured to have a substantially convex shape so as to protrude to the side of the third pattern portion of the second antenna. 52. A reader antenna according to any one of 52 to 52.

[54] The first pattern portion of the first antenna, and the coupling portion of the first antenna And an average mutual distance between the base line portion of the second antenna, the third pattern portion of the second antenna, the connecting portion of the second antenna, and the first antenna. Of the first antenna of the first antenna and the third antenna of the second antenna. 54. The reader antenna according to claim 53, wherein the distance is in the range of 1Z40 to 1Z10, preferably in the range of 1Z30 to 1Z15. Each of the first and second antennas comprises first and second substantially loop-shaped antenna patterns sequentially arranged substantially along the first direction,

The first substantially loop-shaped antenna pattern is disposed on the first side in the first direction, and the second substantially loop-shaped antenna pattern is preferably the second substantially loop-shaped antenna pattern. Placed on the side of the

The first pattern portion of each of the first substantially loop shaped antenna patterns of each of the first and second antennas and the third pattern of each of the second substantially loop shaped antenna patterns The portions extend approximately along the first direction, respectively,

Each of the second and fourth pattern portions of each of the first and second substantially loop shaped antenna patterns of each of the first and second antennas is generally along the second direction. Each extends

The third pattern portion of each of the first substantially loop shaped antenna patterns of each of the first and second antennas and the first of each of the second substantially loop shaped antenna patterns The pattern portion includes a plurality of baseline portions and at least one bent portion provided between the plurality of baseline portions, and the first antenna and the second antenna have a large size. Be prepared for each other,

Each of the bent portions of the first and second substantially loop shaped antenna patterns of the first and second antennas is a side of the first pattern portion of the first substantially loop shaped antenna pattern. And a substantially convex shape so as to respectively project to the side of the third pattern portion of the second substantially loop shaped antenna pattern. The reader antenna according to claim 47, characterized in that:

[56] The above-mentioned first antenna power The range of 0.25 to 0.65 of the average length per one piece of the above-mentioned plurality of baseline portions intermittently arranged to each other, preferably 0. A device according to any one of claims 47 to 55, characterized in that it is offset in said second direction with respect to said second antenna by a range of 3 to 0.5. Reader antenna as described.

[57] The above-mentioned first antenna power The range of 0.25 to 0. 45 of the average length per one of the above-mentioned plurality of baseline portions intermittently arranged to each other or 0. 55 to 0 The leader according to any one of claims 47 to 55, characterized in that it is offset in the second direction with respect to the second antenna by a range of 65. Antenna.

[58] The antenna for a reader according to [56] or [57], wherein the first antenna force is deviated in the first direction with respect to the second antenna.

[59] The first antenna force The average length per one of the plurality of baseline portions intermittently arranged to each other is in the range of 0.80 to 0.75, more preferably The present invention is characterized in that it is shifted in the first direction with respect to the second antenna by the range of 0.1 to 0.7, more preferably, the range of 0.15 to 0.6. Reader antenna according to clause 58.

[60] Any one of items 47 to 59, characterized in that power is supplied only to one of the first and second antennas. Reader antenna described in (1).

[61] A capacitor for a resonant circuit is connected between a pair of terminal portions of the other one of the first and second antennas, wherein a capacitor for a resonant circuit is connected. The reader antenna according to any one of the above.

[62] The antenna for reader according to any one of the items 47 to 61, which is configured to feed power to the first and second antennas alternately. .

[63] The reader antenna according to any one of claims 47 to 62, characterized in that it is configured as the above-described reader antenna carder writer antenna.

[64] The above antenna formation target member is a shelf board of an article placement shelf or a bedboard of an article placement table The main component of the shelf board or the base board is a transparent non-conductive material, and at least an antenna pattern of at least the antenna pattern of the first and second antennas is also constituted. An antenna for a reader according to any one of the items 47-63.

[65] The reader antenna as set forth in [64], wherein a cross-sectional diameter of the wire conductor is 0.5 mm or less.

[66] The reader antenna as set forth in [64] or [65], wherein a cross-sectional diameter of the wire conductor is not less than 0.02 mm.

[67] The above-mentioned first and second antennas are provided between a pair of glass plates stacked one upon another with an insulating layer interposed therebetween. Second

The reader antenna according to any one of the items 66.

[68] Each of the terminal portion of the first antenna and the terminal portion of the second antenna has one and the other edge portions in the length direction of the antenna formation target member, and the back side in the width direction The leader antee according to any one of claims 47 to 67, characterized in that the medium force with the edge of the head is provided at any one selected edge. Na.

[69] The reader antenna according to any one of claims 47 to 68 is formed, and a shelf board is provided as the antenna formation target member! /, An article placement shelf with an antenna characterized by

[70] The reader antenna according to any one of claims 47 to 68 is formed! / A base plate provided with the above-mentioned target member for forming the above-mentioned antenna! An article mounting table with an antenna characterized by

[71] In the reader / writer antenna having an antenna pattern formed on the antenna formation target member,

A conductive and porous sheet-like member is provided on the antenna formation target member so as to extend in a loop shape substantially along the outer periphery of the antenna pattern in plan view. Reader antenna.

[72] The porous sheet-like member may have a mesh structure in which conductive filaments are braided in a mesh shape. The reader antenna according to claim 71, characterized in that:

[73] The ratio of the size of the central opening to the size of the porous sheet member including the central opening is in the range of 20 to 80%, preferably in the range of 30 to 70%. 72. A reader antenna according to claim 71 or 72.

[74] The outer periphery of the porous sheet member extends along the outer periphery or the outer side of the antenna pattern of the reader / writer antenna, as viewed in plan,

74. The inner periphery of the porous sheet-like member satisfies the conditions described in the following items (a) to (d) in plan view, 71. Antenna for readers according to paragraph 72 or 73.

(a) Of the inner peripheries of the porous sheet-like member, the inner peripheries of the first side in the first direction of the antenna formation target member are in a second direction orthogonal to the first direction. It extends substantially along the inner end or the inner side of the pattern portion extending on the outermost side of the first side in the first direction among the pattern portions extending substantially along the first side. ,

(d) Of the inner periphery of the porous sheet member, the inner periphery of the second side opposite to the first side in the second direction of the antenna formation target member is the first inner periphery of the porous sheet member. Of the pattern extending substantially along the direction of the outer side of the pattern extending on the second side in the second direction or the outer edge of the pattern extending substantially along the outer side of the pattern. Extend.

[75] The porous sheet-like member may be the first in the first direction among pattern portions substantially extending in the second direction of the antenna formation target member in plan view. 75. The reader antenna according to claim 74, wherein the reader antenna substantially overlaps a pattern portion extending near the end of the side and near the end on the second side.

[76] The porous sheet-like member extends substantially along the second direction in plan view.

75. The reader antenna according to claim 74, wherein V, V and all pattern portions substantially overlap.

[77] The porous sheet-like member extends substantially along the first direction in plan view.

The antenna for reader according to claim 74, item 75, or item 76, characterized in that the pattern portions of V, 、, and shift patterns substantially overlap.

[78] The pitch force of the small holes of the porous sheet member is in the range of 50 to 2,000 μm, preferably in the range of 100 to 200 m. -The reader antenna according to any one of the items 77-77.

[79] The area per one of a large number of small holes in the porous sheet member is in the range of 4,000 to 1,800,000 / zm ² , preferably 8,000 to 800,000 m 73. The reader antenna according to any one of claims 71 to 78, wherein the force is in the range of ² .

[80] The above-mentioned porous sheet member, characterized by an open area ratio force for a large number of small holes formed therein, in the range of 70 to 95%, preferably in the range of 80 to 92%. An antenna for a reader according to any one of claims 71 to 79.

[81] Of the end portions of the antenna pattern, a conductive and porous second sheet-like member overlapping with any one end portion of the antenna pattern is one of the antenna formation target members. 71. The reader antenna according to any one of claims 71 to 80, wherein the antenna is provided at a location corresponding to at least one of the end portions.

[82] The conductive and porous second sheet-like member force is characterized by at least overlapping with a substantially U-shaped protruding portion in the vicinity of one end portion of the antenna pattern. 82. The reader antenna according to claim 81.

[83] In the state where the above-mentioned reader antennas are mutually insulated and overlapped with each other, the above The reader antenna according to any one of claims 71 to 82, further comprising first and second loop antennas respectively provided on the antenna formation target member. .

[84] Each of the first and second loop antennas comprises an antenna pattern having a substantially loop shape,

Each of the substantially loop shaped antenna pattern of the first loop antenna and the substantially loop shaped antenna pattern of the second loop antenna is a first side in a first direction of the antenna formation target member. A first pattern portion provided on the antenna, a second pattern portion provided on a first side in a second direction orthogonal to the A third pattern portion provided on the second side opposite to the first side in the first direction of the formation target member; and the first in the second direction of the antenna formation target member And a fourth pattern portion provided on the second side opposite to the

Each of the third pattern portion of the first loop antenna and the first pattern portion of the second loop antenna includes a plurality of baseline portions intermittently arranged to each other; At least one bend provided between the plurality of baselines,

Each of the bent portions is configured in a substantially convex shape, each having a first rising portion and a second rising portion,

The first rising portion or the second rising portion of the first loop antenna is between the first rising portion corresponding to that of the second loop antenna and the second rising portion corresponding thereto. The reader antenna according to claim 83, wherein said first loop antenna is offset in said second direction with respect to said second loop antenna so as to be disposed in .

[85] Above first loop antenna force Average length per one of the above-mentioned plurality of baseline sections is in the range of 0.25 to 0.75, preferably in the range of 0.3 to 0.6 The reader antenna according to claim 84, which is deviated in the second direction with respect to the second loop antenna. [86] The first loop antenna is one per one of the first and second rising portions of the first loop antenna and the first and second rising portions of the second loop antenna. The average length is deviated in the first direction with respect to the second loop antenna by a range of 0. 05-0.5, preferably in a range of 0. 1-4. A reader antenna as claimed in claim 84 or 85 characterized by:

[87] The reader antenna according to any one of claims 71 to 86, wherein the reader antenna is configured as the reader antenna carder writer antenna.

[88] The antenna formation target member is a shelf board of an article placement shelf or a bedplate of an article placement table, and the main component of the shelf board or the bedplate is a transparent non-conductive material; And at least an antenna pattern of the second reader antenna

The reader antenna according to any one of claims 83 to 87, characterized in that the wire conductor force is also configured.

[89] The antenna for a reader according to [88], wherein a cross-sectional diameter of the wire conductor is 0.5 mm or less.

[90] A method according to claim 83, wherein said first and second loop antennas are provided between a pair of glass plates laminated to each other with an insulating layer interposed therebetween. An antenna for a reader according to any one of clauses 89.

[91] The reader antenna according to any one of claims 71 to 90 is formed! /, And a shelf board is provided as the antenna formation target member! // An article placement shelf with an antenna characterized by

[92] The article equipped shelf with an antenna according to claim 91, wherein the article equipped shelf with an antenna is a bookshelf with an antenna.

[93] The reader antenna as set forth in any one of claims 71 to 90 is formed! / A base plate provided with said base as said antenna formation target member! An article mounting table with an antenna characterized by