CN1240899A

CN1240899A - Safeguard acting on toppling and falling of lamp and lantern

Info

Publication number: CN1240899A
Application number: CN 98102666
Authority: CN
Inventors: 高军礼
Original assignee: JIADIANBAO INDUSTRIAL Co Ltd
Current assignee: JIADIANBAO INDUSTRIAL Co Ltd
Priority date: 1998-06-26
Filing date: 1998-06-26
Publication date: 2000-01-12

Abstract

A safeguard for the lamp and lantern being toppling and falling has a safeguard switch, which is acting on the lamp and lantern being toppling and falling and composed of conic-cavity electrode, cylindrical cup electrode and a metal ball between them. Said metal ball plays the role of connecting them. It also has electronic circuit including voltage-lowering unit,rectifier, voltage stabilizer, transistor unit and relay acting as electronic switch based on the on/off signals of said safeguard switch. When said safeguard switch is tilted to a critical angle,the relay is turned on to play its role. Its advantages are simple and compact structure and low cost.

Description

Safeties when a kind of light fixture is toppled over

The present invention relates to a kind of safeties, relate to a kind of when light fixture is toppled over, can cutting off the electricity supply automatically especially with discharge cock and the corresponding electronic circuit cell of avoiding accident and can meet requirement for insurance when toppling in the new UL standard (153) that will come into force in January, 1999.

A kind of fireproof console mode Halogen lamp LED is disclosed at CN97120142.0 (U.S.'s pending application 08/972.416), it is equipped with aperture plate, heat sensor and optical sensor, and the electronic circuit system that when described sensor detects a predetermined value, can cut off the electricity supply automatically, the mechanical switch that can when this lamp tilts to a predetermined angular, can cut off the electricity supply also is equipped with.

Above-mentioned of the prior art when toppling over the principal disadvantage with switch be that because this class mechanical switch is to be positioned at the downside of base and must to contact reliably with the ground work, common power switch is attached to will be run counter to any " security legislation " on such position.In addition, if above-mentioned switch is used for directly cutting off the electricity supply, owing to need be used for the lead in the deenergization line on the position that switch therewith connects so low, so just must stress eliminating device be set in the both sides of this switch.Also owing to ground Chang Weishui bespatter, jockey itself (they also are very subaerial) should adopt the material of anti-water level to insulate.

Second shortcoming of the mechanical switch of this prior art be, even described switch is used for the shutoff signal circuit, because the stroke of this mechanical switch plunger has fixing value, and can not be with a kind of all lamp types that are designed for.For example, although this switch is positioned at the base center, if the diameter of this base changes, because the switch plunger stroke is fixed, therefore the inclination angle will change.

The 3rd shortcoming be, if this console mode Halogen lamp LED that is equipped with the prior art switch pushes away continuously/draws for certain children, makes this switch on/off continuously in very short time, and then this switch will be breakdown immediately.Reason is that any switch all is according in one hour rather than in one minute, and on/off is less than 50 designs.

So, discharge cock when in above-mentioned prior art, toppling over, making light fixture new or that transform old vertical placement requirement for insurance when meeting the toppling over of new UL-153 will result in hand cramps.

One object of the present invention is to provide a kind of light fixture of vertical placement, and its improved project organization has not only improved job security, has reduced the danger of fire, has also avoided simultaneously such as the life-span that influences this light fixture owing to pulling of children etc.

Another purpose of the present invention is to provide a kind of safeties, and its discharge cock that improves structure can move when light fixture is toppled over reliably, and is not subjected to the restriction of mounting condition.

Another object of the present invention is to provide a kind of safeties, and the electronic circuit system of these safeties can automatically cut off the power supply to fluorescent tube when toppling over its normal position of disengaging when light fixture.

Safeties when a kind of light fixture that proposes in order to realize above-mentioned purpose of the present invention is toppled over are achieved by the following technical solution.

Discharge cock when a kind of light fixture is toppled over plays the Metal Ball of connection effect comprising: in the vertical direction up and down with the tubular cup electrode of the conical cavity electrode of the mutually the same bottom tool tapered slope of certain interval setting and internal diameter and top tool tubular inwall and at this between two electrodes.

The corresponding electronic circuit cell of discharge cock when a kind of and above-mentioned light fixture is toppled over comprises decompressing unit, rectification unit and voltage regulation unit, and wherein said electronic circuit cell also comprises:

One transistor;

One topples over time insurance unit, described when toppling over discharge cock be connected across between described voltage regulation unit and the described transistorized base stage by resistance respectively; And

One plays the relay of electronic switching according to the on/off signal of described switch, and the coil tandem of this relay is at described transistorized colelctor electrode, and the normally-closed contact of this relay and the two ends that directly are attempted by AC power after lighting is connected in series.

Discharge cock when a kind of light fixture is toppled over, comprising: can be identical conical cavity electrode with tapered slope and the Metal Ball that plays the connection effect between this electrode in level to two outer shape with the certain interval setting.

The corresponding electronic circuit cell of discharge cock had comprised the high-power silicon controlled rectifier of electronics on-off action when a kind of and above-mentioned light fixture was toppled over, wherein:

The small-power controllable silicon that described switch and of toppling over time insurance is connected in series with it together is connected across between the base stage of power supply and described high-power silicon controlled rectifier.

Brief description of drawings:

Fig. 1 shows the profile that is provided with the floor lamp of discharge cock when toppling over of the prior art, and when light fixture tilted to default angle, this discharge cock was used for directly cutting off the electricity supply;

The profile that discharge cock amplified when Figure 1A was toppling among Fig. 1;

Fig. 2 is the structural representation of the amplification of discharge cock when being used for the toppling over of light fixture shown in Figure 1;

Fig. 2 A is the circuit of explanation light fixture lamp when the normal position and the schematic diagram of discharge cock;

Fig. 2 B is explanation light fixture the pendulum circuit of lamp and schematic diagram of discharge cock when the normal position;

Fig. 3 is the profile of of the present invention one discharge cock when toppling over, and wherein shows and understands all components and parts that are used for forming this switch;

Fig. 4 is the selected arbitrarily exterior contour of used conical cavity electrode among the present invention;

Fig. 5 is the another profile of discharge cock when toppling over of the present invention, wherein shows and understands all components and parts that are used for forming this switch;

Fig. 5 A be shown in Figure 5 when toppling over discharge cock along A-A to cutaway view;

Fig. 6 is the circuit diagram of a preferred embodiment of safeties when toppling over of the present invention, shows the connection of discharge cock in traditional transistor/relay circuit unit when toppling over of the present invention;

Fig. 7 is the circuit diagram of the another preferred embodiment of safeties when toppling over of the present invention, shows the connection of discharge cock in traditional high-power silicon controlled rectifier circuit unit when toppling over of the present invention.

By below in conjunction with the description of accompanying drawing, will make above-mentioned purpose of the present invention and other advantage clearer to preferred embodiment of the present invention.

With reference to Fig. 1 and Figure 1A, be provided with in the bottom side of the base 11 of console mode halogenic lamps and lanterns 10 in the accompanying drawing and topple over discharge cock 1, this is toppled over discharge cock 1 and directly connects with the power line 12 that enters, its structural representation as shown in Figure 2, switch 1 is a normal open switch that has lever transmission arm 21, this arm 21 has spring 14 to be biased in open position, and then separate with 20 the contact 19 of switch 1; When lamp base 11 leans against on the surface of solids 18, be operated on the normal position as light fixture, transmission arm 21 moves up because of being subjected to support force upwards, and also be about to contact arm 17 and move up, compression bias spring 14, and with

contact

19 and 20 closures; So, just light fixture is in running order, shown in Fig. 2 A.When lamp certain angle that tilted, contact arm 17 is because the elastic force effect of spring 14 and biased downward disconnects

contact

19 and 20, and then makes this switch 1 be in normally open, and lamp will quit work, shown in Fig. 2 B.When this lamp turns back to common erection position once more, lamp will be started working again.Obviously, discharge cock is fixed in the bottom side of base 11 for the toppling over of above-mentioned prior art the time, also must set up the device of carriage, lever, spring etc. in this light fixture 10, although and the stroke of switch 1 is certain in the practice, change along with the difference of the direction of its position set on base 11 and inclination.

And as shown in Figure 1, when unintentionally one glass of water being spilt when splashing on the ground, this switch will be a water retting immediately.In addition, because the stroke of this switch driving member is a constant, then different critical surfaces can appear in the time of will being installed on the different floor lamp of base diameter with a kind of switch.Also have, can cause counterweight irregular when being installed to such switch in the base, reduced to land the stability of light fixture, may make floor lamp have different flip angles again along different directions.At last, because conventional switch can only test by on/off by 50 times frequency per hour,, operates this open pipe so can not bearing in the short time continuously on/off.

And the profile of discharge cock 1 when toppling over of the present invention please refer to Fig. 3.The identical bottom of internal diameter had the conical cavity electrode 31 of tapered slope and tubular cup electrode 35 in the vertical directions that top has the tubular inwall are provided with certain clearance 45, wherein the lower taper cavity electrode 31 that is made of with brass commutator has the axial screw 39 that is used for installing the conical cavity end face 311 of Metal Ball 32 and is used for admitting the terminal screw 33 of band connecting ring 34, and the cylindrical wall 351 and the axial screw 38 that is used for admitting the terminal screw 36 of being with connecting ring 37 of Metal Ball of being slightly larger than 32 can be arranged by 35 at the top tubular cup electrode that commutator is made with brass.Sealing cover is in place and constitute a black box firmly with lower electrode 31 and upper electrode 35 with plastic sheath 40.

The angle from preferred fixed conical cavity end face 311 and horizontal plane here is 20 °.This fluted drill drift angle with standard is compared more blunt slightly for 120 °.Therefore, any fluted drill can both grind to form 140 ° of drift angles and comes to process lower taper cavity electrode 31 by one drilling operating.

For ease of assembling, above-mentioned two

electrodes

31 and 35 exterior contour can be made into profile shown in Figure 4.Like this, in case after the tight fit, plastic sheath 40 just will not extremely be thrown off from these two.Metal Ball 32 preferably by with these two electrodes in particularly lower electrode 31 identical materials make.If the employing steel ball, for the erosion that prevents that electrochemical reaction from causing, preferably to its plating with lower electrode 31 identical materials or with its chromium plating.

Discharge cock 1 is when any direction tilts to a critical angle when this is toppled over, conical cavity end face 311 in this direction will be parallel with horizontal plane, therefore, slightly bigger inclination angle just can make Metal Ball 32 outer rolling, until being stoped by the tubular cup electrode 35 on aforementioned top, on this position, simultaneously both contacts Metal Ball with conical cavity electrode 31 and tubular cup electrode 35, make these two electrodes connections.Thus, shown in Figure 3 of the present invention when toppling over discharge cock 1 be the switch that a kind of first state disconnects and second state conducts electricity.

With of the present invention this when toppling over discharge cock 1 to be installed in any printing board PCB be extremely easy.Unique what will do is that wire with " 9 " shape is replaced that two connecting

rings

34,37, and inserts in the pre-manufactured hole on the PCB welding then with the part of its linearity.Make above-mentioned

terminal screw

33,36 by " 0 " the shape part in " 9 " shape wire again, be screwed in the

screw

39 and 38 of two electrodes 31,35.Nature, also can with other device such as carriage, casing etc. with above-mentioned when toppling over discharge cock 1 be installed on any position of light fixture.

Fig. 6 is a preferred embodiment of the corresponding electronic circuit cell of discharge cock when toppling over the light fixture that above-mentioned first state of the present invention disconnects and second state conducts electricity.In this preferred embodiment of the present invention, its control section at first is connected on AC power AC (120V with a decompression capacitor C1 (105/250V), output 60HZ), so the output of this decompression capacitor C1 again with distolateral joining of input of the rectification circuit of forming by diode D1 (or its array).At the output end of this rectifier D1 and be connected to Zener diode Z1, again capacitor C2 is attempted by the two ends of this Zener diode Z1 then as filter capacitor; At this moment, of the present invention aforesaid when toppling over discharge cock 1 be connected across the side of the positive electrode of this Zener diode Z1 and the base stage B of transistor Q1 through resistance R 1 (1K 1/4W) and resistance R 2 (10K 1/4W) respectively; There is relay coil W to be connected across the side of the positive electrode of this Zener diode Z1 and the colelctor electrode C of transistor Q1; There is simultaneously capacitor C3 (220mmF/25V) to constitute 30 seconds delay circuit unit again together with the emitter E of above-mentioned resistance R 2 (10K 1/4W) and transistor Q1.In addition, the normally-closed contact J1 of described relay with after lighting is connected, is joined with AC power again.

In Fig. 6, the voltage of exporting from AC power AC is reduced to for example appropriate voltage of 12V behind decompression capacitor C1, by rectifier D1 rectification, input to capacitor C2 again after voltage stabilizing.When in case light fixture is toppled over, aforesaid of the present invention when toppling over discharge cock 1 connect, so above-mentioned voltage of voltage regulation just when this is toppled over discharge cock 1 add bias voltage and make this transistor Q1 conducting for the base stage B of transistor Q1 (CS9014C).And collector circuit will make relay coil excitation, cause relay normally-closed contact J1 to disconnect, and then will block the power supply of landing light fixture to described.In the accompanying drawings, in case K switch turns back to off-state, R2 (10K/0.25N) and C3 (220mmF/25V) just constitute 30 seconds delay circuitry.If the resistance of R2 changes, then time-delay also will change.This performance can be used to prevent that children from pushing away/drawing this floor lamp continuously and causing it and rock.

Fig. 5 is the legend of another preferable light fixture of the present invention discharge cock when toppling over.In this embodiment, two electrodes 51 of switch can be arranged to identical semi-cylindrical form and simultaneously tapered slope be arranged at its top 511 and 511 ' with 51 '.Two electrodes 51 described in the use and 51 ' are relatively to be fixed in the plastic packaging cover 40 and 40 ' with certain clearance 53 in the horizontal direction, and tapered portion internal diameter that should the half round post electrode should be arranged to make Metal Ball partly to roll at the conical cavity of semicircular electrode greater than the diameter of Metal Ball; When light fixture was in the normal position, Metal Ball 32 placed the bottom of tapered slope 511 and 511 ' promptly to be in the center of two electrodes that are provided with relatively, and connects described two

electrodes

51 and 51 '.When light fixture is toppled over when reaching a critical angle to any direction, the tapered slope 511 and 511 ' of electrode on this direction will be parallel with horizontal plane, therefore, slightly bigger inclination angle just can make Metal Ball 32 outer rolling, until being stoped by the jut 512 that is provided with along the exterior periphery of two electrodes or 512 ', this moment, discharge cock 1 disconnected during the toppling over of present embodiment.In addition, also electrode tapered edge of the present invention partly should be provided with insulation division 54 and 54 ' with guarantee when Metal Ball 32 along the gap during 53 rolling certain distances, discharge cock 1 is disconnected, thereby guaranteed at light fixture when any direction is toppled over, this switching device can both disconnect effectively, shown in Fig. 5 A.As seen, discharge cock 1 is the switch that a kind of first state conduction and second state cut off the power supply during toppling over shown in the present embodiment.

Identical with embodiment shown in Figure 3, two electrodes 51 and 51 ' among Fig. 5 also preferably adopt the commutator brass material, and Metal Ball 32 is preferably by making with these two electrodes 51 and 51 ' identical materials.If the employing steel ball, for the erosion that prevents that electrochemical reaction from causing, preferably to its plating with electrode 51 and 51 ' identical materials or with its chromium plating.

And a preferred embodiment of Fig. 7 corresponding electronic circuit cell of discharge cock when showing the light fixture that cuts off the power supply with the first state of the present invention conduction and second state and toppling over.In this embodiment, adopt the thyristor TH1 that is in series with lighting as the on/off of electronic switch with the control light fixture; And of the present invention when toppling over discharge cock 1 jump to the two ends of this thyristor TH1 and power supply through resistance R 5 and DB1.When light fixture was in the normal position, voltage was applied to the base stage of thyristor TH1 through the discharge cock 1 of closure, triggered TH1 and also light fixture was lighted; If when light fixture was toppled over, then discharge cock as shown in Figure 5 disconnected immediately, blocks the power supply to light fixture.

In sum, adopt vertical light fixture of the present invention and safeties thereof, at first since now this when toppling over discharge cock 1 compact very much and for example be easy to be installed to lamp stand, lampshade etc. Anywhere, so this switch can be installed to place, promote the security of using discharge cock of the present invention away from base and ground.Secondly, since now this when toppling over the electronic circuit part of discharge cock K can incorporate among the PCB of electronic light modulator, and since any electronic light modulator had decompression capacitor, rectifier and Zener diode etc. thereby only needed transistor Q1 and some simple parts to realize electronic circuit system of the present invention.So, realize that cost of the present invention is very low.In addition, because all parts of using in the discharge cock when toppling over of the present invention all very simply are easy to make, electrode for example of the present invention through be designed to can be in automatic lathe then can be by brass bar manufacturing plastic sheath, terminal screw and connecting ring available from market, thereby very high productivity ratio can be arranged.At last owing to be that drift angle by the conical cavity electrode is set in described critical flip angle in the discharge cock now, just can with this when toppling over discharge cock be used for any floor lamp that base size difference, pole height do not wait.

Although aforesaid when toppling over discharge cock be to be used for the light fixture vertically placed, be to be understood that through after the suitable distortion discharge cock and electronic circuit cell thereof also can be used for having in the field of requirement for insurance when other is toppled over during the toppling over of above preferred embodiment of the present invention.

Though; enumerated above preferred embodiment of the present invention at this, should be understood to those are known those skilled in the art under the prerequisite that does not break away from the present invention spirit essence and any technology distortion of making and changing all should drop within claims of the present invention scope required for protection.

Claims

Discharge cock when 1, a kind of light fixture is toppled over, it is characterized in that described when toppling over discharge cock comprise: in the vertical direction has the conical cavity electrode of tapered slope and tubular cup electrode that top has the tubular inwall and plays the Metal Ball of connection effect up and down between two electrodes at this with certain interval setting and the mutually the same bottom of internal diameter.
Discharge cock when 2, light fixture according to claim 1 is toppled over is characterized in that the inclined-plane of described conical cavity electrode and horizontal plane have an inclination angle.
Discharge cock when 3, light fixture according to claim 2 is toppled over is characterized in that the inclination angle between described inclined-plane and the horizontal plane preferably is no more than 20 °.
Discharge cock when 4, light fixture according to claim 1 is toppled over is characterized in that described tubular cup electrode has a columnar wall portion, and the internal diameter of this columnar wall portion is slightly larger than the diameter of described Metal Ball.
Discharge cock when 5, toppling over according to claim 1 or 2 or 3 or 4 described light fixtures, it is characterized in that described when toppling over discharge cock be the discharge cock that a kind of first state outage and second state conduct electricity.
Discharge cock when 6, a kind of light fixture is toppled over, it is characterized in that described when toppling over discharge cock comprise: can be identical conical cavity electrode with tapered slope and the Metal Ball that plays the connection effect between this electrode in level to two outer shape with the certain interval setting.
Discharge cock when 7, light fixture according to claim 6 is toppled over is characterized in that the inclined-plane of described two conical cavity electrodes and horizontal plane have an inclination angle.
Discharge cock when 8, light fixture according to claim 7 is toppled over is characterized in that the inclined-plane of described two conical cavity electrodes and the inclination angle between the horizontal plane preferably are no more than 20 °.
Discharge cock when 9, light fixture according to claim 6 is toppled over it is characterized in that described electrode is preferably half-cylindrical, and the tapered portion internal diameter should be arranged to than the diameter greater than Metal Ball.
Discharge cock when 10, light fixture according to claim 9 is toppled over is characterized in that best exterior periphery along described half-cylindrical electrode is provided with jut.
Discharge cock when 11, toppling over according to claim 6 or 7 or 8 or 9 or 10 described light fixtures is characterized in that the edge of the described electrode conical surface is provided with from the end to core insulation ground.
Discharge cock when 12, toppling over according to claim 6 or 7 or 8 or 9 or 10 described light fixtures, it is characterized in that described when toppling over discharge cock be the discharge cock that a kind of first state conduction and second state cut off the power supply.
Discharge cock when 13, toppling over according to claim 1 or 6 described light fixtures, it is characterized in that described when toppling over discharge cock can be installed in any position that comprises printed circuit board (PCB) of this body structure of light fixture.
Discharge cock when 14, toppling over according to claim 1 or 6 described light fixtures is characterized in that described electrode preferably made with brass by commutator.
Discharge cock when 15, toppling over according to claim 1 or 6 described light fixtures, it is characterized in that described when toppling over the Metal Ball in the discharge cock preferably by making with described conical cavity electrode identical materials.
Discharge cock when 16, toppling over according to claim 1 or 6 described light fixtures, it is characterized in that described when toppling over the Metal Ball in the discharge cock be to make by being different from described conical cavity electrode material therefor, but described Metal Ball preferably is coated with and described conical cavity electrode identical materials.
Discharge cock when 17, toppling over according to claim 1 or 6 described light fixtures, it is characterized in that described when toppling over the Metal Ball in the discharge cock be to make by being different from described material therefor, and preferably with its chromium plating.
The corresponding electronic circuit cell of discharge cock comprised decompressing unit, rectification unit and voltage regulation unit when 18, light fixture a kind of and claim 1 was toppled over, and it is characterized in that described electronic circuit cell also comprises:

One transistor;

One topples over time insurance unit, described when toppling over discharge cock be connected across between described voltage regulation unit and the described transistorized base stage by resistance respectively; And

One plays the relay of electronic switching according to the on/off signal of described switch, and the coil tandem of this relay is at described transistorized colelctor electrode, and the normally-closed contact of this relay and the two ends that directly are attempted by AC power after lighting is connected in series.
19, electronic circuit cell according to claim 18 is characterized in that described electronic circuit cell also comprises:

One by capacitor, be serially connected in the delay circuit unit that the resistance of described transistor base constitutes together with described transistorized emitter stage.
20,, it is characterized in that described electronic circuit cell can be the part of electronic light modulator circuit unit according to claim 18 or 19 described electronic circuit cells.
21,, it is characterized in that described electronic circuit cell can be a part that is independent of the electronic light modulator circuit unit according to claim 18 or 19 described electronic circuit cells.
The corresponding electronic circuit cell of discharge cock had comprised the high-power silicon controlled rectifier of electronics on-off action when 22, light fixture a kind of and claim 6 was toppled over, and it is characterized in that the small-power controllable silicon that described switch and of toppling over time insurance is connected in series with it together is connected across between the base stage of power supply and described high-power silicon controlled rectifier.