WO1997045596A2 - Electronic road beacon - Google Patents
Electronic road beaconInfo
- Publication number
- WO1997045596A2 WO1997045596A2 PCT/US1997/008905 US9708905W WO9745596A2 WO 1997045596 A2 WO1997045596 A2 WO 1997045596A2 US 9708905 W US9708905 W US 9708905W WO 9745596 A2 WO9745596 A2 WO 9745596A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- beacon
- base plate
- electronic road
- lens
- road beacon
- Prior art date
Links
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F9/00—Arrangement of road signs or traffic signals; Arrangements for enforcing caution
- E01F9/50—Road surface markings; Kerbs or road edgings, specially adapted for alerting road users
- E01F9/553—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members
- E01F9/559—Low discrete bodies, e.g. marking blocks, studs or flexible vehicle-striking members illuminated
Definitions
- the present invention relates to a battery powered traffic alert device. More particularly, the present invention relates to electronic road beacons for alerting on-coming motorists and pedestrians to a potentially hazardous roadway or walkway condition.
- Emergency traffic conditions often arise which require the immediate or special attention of motorists, pedestrians and other thoroughfare users. Emergency situations, for instance, may result from traffic accidents, road construction, road closures, traffic light malfunctions, detours, road obstructions and other temporary or permanent hazards. Often, these hazards are accompanied by inclement weather conditions, such as rain, fog, sleet, snow or dark of night.
- Traffic alert devices have been developed to caution roadway users of unusual conditions.
- Common traffic alert devices include plastic cones or barrels, triangle reflectors, steel or concrete barricades and delineators. However, these devices are difficult to see at night or during inclement weather conditions. Flares occasionally are used either alone or in conjunction with cones and barricades to increase visibility. Yet, flares can be time consuming and potentially dangerous to ignite. Moreover, flares can cause injury to persons and damage to vehicles that inadvertently come into contact with the flare. Likewise, flares produce gagging fumes and smoke and pose a fire hazard.
- flares are inappropriate for indoor uses, or for accidents near dry brush or involving chemical spills or gas leaks.
- flares have a limited duration and lifespan. Flares may burn out prior to help arriving, or prior to the expiration of the emergency condition. Flares must also be replaced about every three years for maximum effectiveness.
- Flashing or rotating warning lights have also been used to alert motorists of hazardous traffic conditions.
- flashing lights are prone to damage and therefore must be mounted to cones or barricades, such as shown by Dydzyk in U.S. Patent No. 5,294,924 entitled "Flashing Warning Light for a Traffic Control Device.”
- the flashing light may be damaged if the light becomes separated from the cone or if the cone is inadvertently knocked over.
- flashing lights are vulnerable to theft since they can be easily turned ON and OFF.
- warning lights mount magnetically on a car roof and can draw power from the cigarette lighter socket of the car. These warning lights, however, are limited to being placed within reach of a cigarette lighter socket. Also, the car- mounted flashing light is prone to damage if the light becomes dislodged from the car.
- a traffic alert device that is highly visible to oncoming traffic. It is a further object of the present invention to provide a road beacon device that is highly visible but also sufficiently strong and durable that it can be driven over by vehicles, is waterproof and can withstand harsh treatment and environments.
- the present invention comprises an electronic road beacon that alerts traffic to a road hazard or emergency condition.
- the electronic road beacon is designed to be placed on the surface of the roadway and can be driven over by a car, truck or other vehicle.
- the electronic road beacon of the present invention comprises three essential components.
- the first component is a circular base plate preferably molded from a high strength, high impact plastic material.
- the base plate is configured to have a circular bottom portion and a raised ring ⁇ like structure or annulus around the outer periphery of the base plate.
- the annulus defines an interior opening for the base plate.
- the annulus also has an outer beveled face to facilitate vehicles passing over the beacon.
- the second component is a dome structure preferably made of a high strength, high impact molded plastic.
- the dome forms a spherical lens, having a spherical shape radius substantially greater than the height of the dome.
- the dome has concentric radial freznel cut into its interior surface and at least one reflector mirror.
- the dome is mounted to the base plate by mating buttress threads associated with the inner surface of the raised annulus. When mounted together, the base plate and the dome define a sealed interior space that is protected from weather and other harmful conditions.
- the third component is a light-generating circuit board mounted to the bottom interior opening of the base plate in the interior space of the beacon defined by the base plate and the dome.
- the circuit board contains solid state circuitry and a light emitting bulb. The light is focused and intensified by the radial freznel of the dome.
- the bulb and circuitry are powered by rechargeable batteries or the like.
- An elongated passage is provided through the annulus of the base plate so that the batteries may be recharged through the use of an external plug.
- the circuit board contains a magnetic activated switch. Thus, the device can only be turned ON and OFF with the use of a magnetic key, thereby reducing the incentives for theft.
- Figure l is an angled perspective of a preferred embodiment of the electronic road beacon in accordance with the present invention.
- Figure 2 is a top view of the preferred electronic road beacon in accordance with the present invention.
- Figure 3 is a cross-sectional side view of the road beacon taken along line 3—3 of Figure 2 in accordance with the preferred embodiment of the invention.
- Figure 4 is a cross-sectional side view of the road beacon taken along line 3—3 of Figure 2 in accordance with an alternative embodiment of the invention.
- Figure 1 generally shows a preferred electronic road beacon 100 of the present invention.
- the beacon 100 is designed to be able to withstand the impact of a vehicle and has endured the force of a 80,000 pound truck traveling at 60 miles per hour.
- the beacon 100 is designed to be water proof to a depth of 300 feet. Accordingly, the beacon 100 may be placed on the roadway hundreds of feet from an accident or at the center of the hazard, such as on a disabled car.
- the beacon 100 essentially comprises a circular base plate 200, dome 300, and circuit board 400.
- dome 300 is made of a high strength, high impact plastic, such as thermoplastic polycarbonate resins and the like.
- a resin found particularly suitable for the dome of the present invention is "LEXAN" 500 or 503 sold by General Electric Company.
- dome 300 is a spherical lens, typically having a thickness of about 0.2800 inches and a radius of about 7.5 inches.
- dome 300 can be a solid core lens, in which the dome may have a conical shape with a flattened top surface (not shown) .
- the base plate 200 is also molded of a high strength, high impact plastic, such as LEXAN 500 or 503.
- Base plate 200 and dome 300 define an interior space for the electronic road beacon 100.
- Base plate 200 has an interior opening on which circuit board 400 is mounted and receives dome 300 thereon in tight sealing engagement. Accordingly, circuit board 400 is sealingly enclosed within the interior space of beacon 100 and thereby protected from adverse weather and other harmful conditions.
- circuit board 400 has a bulb 410, solid state circuitry to control the operation of bulb 410, an ON/OFF switch 415 for activating and de-activating the circuitry, and batteries 420 for powering the circuitry.
- An elongated switch controller (not shown) extends through the bottom portion 202 of base plate 200 in order to turn the bulb 410 ON and OFF.
- circuit board 400 is potted in a tinted resin core plastic.
- the circuit board 400 is potted by first connecting all the solid state elements and Xenon bulb 410.
- the assembled circuit board 400 is placed in a mold and the entire board is encased in the potting material, preferably on the order of V6 inch thick, the bulb 410 then extends outside the pot. In this manner, the bulb 410 becomes affixed to circuit board 400 in a permanent fashion.
- the potting material sets, the encased circuit board 400 is adhered to the bottom portion 202 of base plate 200.
- the potting material is preferably dyed black so that the circuitry is concealed from view.
- the potted circuit board 400 is further coated with an aluminum oxide reflective surface to reflect incident light from bulb 410.
- the potted circuit board 400 provides a level top surface that furnishes a better and more consistent reflection of incident light.
- An indentation or opening 215 is made on the underside of base plate 200 to enable magnetic switch 415 to be operated through the lower surface of the base plate 200.
- the indentation or opening may be located on the outer edge 203 of base plate 200.
- a magnetically actuated switch may be used so that no opening is required.
- bulb 410 is a Xenon strobe tube, such as the "SAFE HOUSE" Emergency Strobe Light available at Radio Shack.
- Bulb 410 provides an extremely high intensive burst of light having a half second duration and repeating between one second pause.
- circuit board 400 is associated with battery recharge receptacle 430, as will be discussed below in relation with Figure 3.
- a coaxial plug (not shown) may be inserted into recharge receptacle 430 in order to recharge batteries 420.
- base plate 200 has a circular bottom portion 202 having an inside floor 250 (shown in Figure 2) and an annulus 205 extending around the periphery of the base plate and defining an inner space.
- Circuit board 400 is mounted to the inner space of base plate 200 in accordance with conventional techniques.
- Annulus 205 is a raised ring- like structure having a vertical outer edge 203 and a horizontal plane 204 on the exterior of the beacon 100.
- the horizontal plane 204 meets with the outer edge 203 at a beveled face 210, preferably having a 45 degree slope.
- the inside of annulus 205 has a shoulder 230 and buttress thread 240 for mating with dome 300.
- Shoulder 230 has a groove 234 which contains O-ring 236.
- O-ring 236 works in conjunction with shoulder 230 to form a tight seal between the base plate 200 and dome 300.
- shoulder 230 provides structural support to dome 300 in a vertical direction.
- annulus 205 provides structural support to dome 300 in a horizontal direction.
- the configuration of annulus 205 and shoulder 230 eliminates undue pressure from buttress threads 240.
- Battery recharge receptacle 430 is a circular, narrow and elongated passage that extends through annulus 205 and part of the bottom portion 202 to circuit board 400. Alternatively, the receptacle 430 may extend through the bottom portion 202 from the underside of the base plate 200 or through the annulus 205 alone.
- a conventional rubber stopper fits inside receptacle 430 to protect against water or dirt entering the interior space of the receptacle 430 when the batteries are not being charged.
- circuit board 400 extends flush against the inside of shoulder 230 so that dirt does not enter the interior space of the electronic road beacon 100.
- dome 300 includes an outwardly turned lip 310 having buttress threads for mating with the buttress thread 240 of annulus 205. The top of lip 310 is flush with the horizontal plane of annulus 205 when the dome 300 is properly mounted to base plate 200.
- the interior of the dome 300 contains two sets 320, 330 of 4 concentric radial freznel 340 for a total of 8 freznel 340.
- each of the freznel 340 are reflector surfaces having a colored tint coating. Only the freznel 340 are dyed, rather than the entire dome 300, so that the intensity of light is not diminished. Even though only the freznel 340 are tinted, the entire beacon 100 shows the selected color.
- the colors blue, flare red and amber are preferably used to indicate the presence of police or highway patrol, fire fighters or rescue teams, and road utility crews or military, respectively. However, it is recognized that any color tint may be utilized to correspond with a particular setting or operation. In addition, the tint may be omitted altogether.
- the compactness and durability of the beacon 100 makes it further useful by private motorists or to mark emergency landing strips for helicopters and the like or other uses which will readily occur to those skilled in the art.
- the sides of freznel 340 function to blend and intensify light emitted from bulb 410.
- freznel 340 are configured so as to direct light emitted from bulb 410 both horizontally and vertically outward from electronic road beacon 100.
- the freznel 340 are configured at about 45 degree angles and are cut about one-eighth inch deep into the inner surface of dome 300.
- the freznel 340 are formed by making an incision on the inside surface of dome 300. The pitch of the incisions may vary along the surface of the dome 300 in order to best focus and direct the light in the particular manner desired.
- the freznel of upper set 320 are located on dome 300 at positions corresponding to a radius of 1.600, 1.780, 1.940 and 2.070 inches. In accordance with the present invention, these radii correlate to an angle of 25, 28, 31 and 34 degrees from the radial center of dome 300 measured along a vertical line, respectively.
- the lower set 330 of freznel are located on dome 300 at positions corresponding to a radius of 2.800, 2.9250, 3.0500 and 3.1750 inches, or 49, 52, 55 and 59 degrees, respectively.
- a reflector 390 is adhered to the interior portion of dome 300 above the upper set 320 of freznel 340.
- the reflector 390 is formed by applying a reflective coating 392 to backing 395, which is then adhered to dome 300.
- the reflective coating 392 reflects incident light emitted by bulb 410 downward back into the electronic road beacon 100.
- the reflector 390 is a vinyl mirror reflector having a plastic material backing 395 and a 1/32 inch of aluminum oxide coating 392.
- the reflector 390 is an inverted cone-shaped vacuum formed vinyl mirror reflector.
- the conical backing 395 can also be formed by placing an incision along the radius of a 3 inch circle of plastic material to create two ends. The ends are overlapped and curled inward to form a pointed cone in which the base has a 2 inch diameter. Any excess material is removed and the ends of the cone are adhered together in accordance with conventional means.
- the reflective coating 392 is then applied to backing 395.
- the outer edge of the base of the cone is then adhered to the inside of the top of dome 300 with a high grade epoxy or other conventional adhering agent.
- the cone extends downward toward bulb 410 so that the top of the cone is about ⁇ inch from the top of bulb 410.
- the cone shape reflects incident light out of the beacon 100, increasing the light intensity of bulb 410.
- reflector 390 conforms to the shape of the top inside of dome 300. By placing reflector 390 on the inside of dome 300, as opposed to the outside the dome, reflector 390 is protected from damage and closer to bulb 410. Since the reflector 390 is closer to the bulb 410, the light is focused and condensed to a greater degree, thereby increasing the intensity of bulb 410.
- the floor 250 of bottom portion 202 also preferably contains a reflective coating, such as one made of aluminum oxide, to further reflect incident light outward from beacon 100.
- a reflective coating such as one made of aluminum oxide
- the surface of batteries 420 may further be provided with a reflective coating.
- reflective coating may be applied in any location to best conserve light intensity and direct light in a desired manner. The reflective surfaces function to condense, compress and intensify the light so as to magnify the effectiveness of the light source.
- reflectors can be placed on the outside of the electronic beacon 100.
- the reflectors reflect light from oncoming car headlights. Reflectors are especially important in the event the bulb 410 burns out or batteries 420 expire.
- Reflectors are preferably placed around the outside edge 203 of the beacon 100, as well as on the top outside of dome 300, above the conical reflective surface 390.
- a reflector may optionally be placed on the inside of dome 300 beneath cone 390 to reduce wear due to a harsh environment. However, placement on the exterior of dome 300 provides an unobstructed use to obtain a maximum reflective effect.
- the reflectors are tinted red, amber or blue.
- a non-slip pad 220 such as one made of non- skid rubber, is optionally mounted to the underside of base plate 200.
- Pad 220 serves to prevent movement of the electronic road beacon 100 from its original placement position. In addition, pad 220 prevents damage to cars or other surfaces upon which the beacon 100 is placed.
- Pad 220 further provides beacon 100 with added protection against environmental elements.
- a hole is cut in pad 220 to allow access to the ON/OFF switch (not shown) located in opening 215.
- the pad 220 may be ribbed or grooved to provide added friction.
- the beacon 100 is designed to be compact and low to the ground. This allows a vehicle to drive over the beacon 100 with minimal interference.
- the entire beacon 100 is only about 3 inches in height and base plate 200 has a diameter of about 8.53 inches, with dome 300 having a diameter at lip 310 of about 7.5 inches. Heights greater than about 3 inches make the beacon difficult to run over by a car.
- the beacon may be as small as about 2 ⁇ inches in height and 7 inches in diameter, because heights less than about 2 ⁇ inches result in poor focusing of the light and therefore diminish illumination for on-coming traffic and the like.
- the light emitted by beacon 100 is visible from as far away as 10 miles.
- the beacon uses a stationary light source
- a rotating light may be used.
- the dome may be in the shape of an ellipse.
- freznel used that partly extend in any direction about the dome.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU31429/97A AU3142997A (en) | 1996-05-28 | 1997-05-27 | Electronic road beacon |
CA002256317A CA2256317C (en) | 1996-05-28 | 1997-05-27 | Electronic road beacon |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/654,266 | 1996-05-28 | ||
US08/654,266 US5785410A (en) | 1996-05-28 | 1996-05-28 | Electronic road beacon |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1997045596A2 true WO1997045596A2 (en) | 1997-12-04 |
WO1997045596A3 WO1997045596A3 (en) | 1998-02-05 |
Family
ID=24624149
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US1997/008905 WO1997045596A2 (en) | 1996-05-28 | 1997-05-27 | Electronic road beacon |
Country Status (4)
Country | Link |
---|---|
US (1) | US5785410A (en) |
AU (1) | AU3142997A (en) |
CA (1) | CA2256317C (en) |
WO (1) | WO1997045596A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008109947A1 (en) * | 2007-03-12 | 2008-09-18 | Inventis Technology Pty Limited | A method, apparatus and system for alerting traffic |
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US6155703A (en) * | 1998-10-06 | 2000-12-05 | Physical Optics Corporation | Surface mounted light assembly |
USD424725S (en) * | 1999-06-02 | 2000-05-09 | Cousins Morison S | Flashlight |
US6329933B1 (en) | 1999-10-07 | 2001-12-11 | Stephen J. Mikesic | Portable emergency landing area lighting device for helicopters |
US6874109B1 (en) * | 1999-11-23 | 2005-03-29 | Janusz Rajski | Phase shifter with reduced linear dependency |
US8360615B2 (en) * | 2000-05-08 | 2013-01-29 | Farlight, Llc | LED light module for omnidirectional luminaire |
US6543911B1 (en) | 2000-05-08 | 2003-04-08 | Farlight Llc | Highly efficient luminaire having optical transformer providing precalculated angular intensity distribution and method therefore |
US6683532B2 (en) | 2000-12-06 | 2004-01-27 | Dtr Systems, Inc. | Portable warning light system |
US6871987B1 (en) * | 2002-03-28 | 2005-03-29 | Kenny F. Morton | Rim illuminating device |
US7878678B1 (en) * | 2002-04-25 | 2011-02-01 | Stamatatos Haralambos A | Illuminating safety and notification device |
US10180244B2 (en) | 2002-04-25 | 2019-01-15 | Haralambos A. Stamatatos | Illuminating safety and notification device |
US20040061943A1 (en) * | 2002-09-26 | 2004-04-01 | Bosch John P. | Vehicle accessory system |
US7578597B2 (en) * | 2002-11-15 | 2009-08-25 | Hubbell Incorporated | Outdoor lighting fixture |
US7071633B2 (en) * | 2003-07-10 | 2006-07-04 | Trafcon Industries, Inc. | Burst pulse circuit for signal lights and method |
US7372441B2 (en) * | 2003-07-10 | 2008-05-13 | Trafcon Industries, Inc. | Burst pulse circuit for signal lights and method |
US7688222B2 (en) | 2003-09-18 | 2010-03-30 | Spot Devices, Inc. | Methods, systems and devices related to road mounted indicators for providing visual indications to approaching traffic |
US20050068777A1 (en) * | 2003-09-25 | 2005-03-31 | Dragoslav Popovic | Modular LED light and method |
JP4381792B2 (en) * | 2003-12-12 | 2009-12-09 | サクサプレシジョン株式会社 | Light alarm device |
KR100555413B1 (en) * | 2004-12-29 | 2006-03-03 | 서정영 | Boundary stone using the sollar cell |
US7172307B2 (en) * | 2005-01-05 | 2007-02-06 | Gamasonic Ltd. | Solar powered garden light |
CA2561692A1 (en) * | 2006-09-19 | 2008-03-19 | Gilles Ruest | Stackable hemispheric light reflecting beacon |
US8786461B1 (en) | 2013-02-05 | 2014-07-22 | Steven Daudelin | Electric road flare |
USD743079S1 (en) * | 2014-01-04 | 2015-11-10 | Herman N. Philhower | Solar powered ground light |
US9399844B1 (en) | 2014-01-13 | 2016-07-26 | Evolutionary Markings, Inc. | Pavement marker modules |
USD854437S1 (en) * | 2017-02-10 | 2019-07-23 | Pi Variables, Inc. | Portable electronic flare system |
USD854438S1 (en) * | 2017-02-10 | 2019-07-23 | Pi Variables, Inc. | Portable electronic flare |
USD848890S1 (en) * | 2017-06-13 | 2019-05-21 | Maschinenfabrik Reinhausen Gmbh | Dial for a measuring instrument |
US11354995B2 (en) | 2017-07-10 | 2022-06-07 | Carrier Corporation | Hazard detector with optical status indicator |
US10825313B2 (en) | 2018-03-30 | 2020-11-03 | Carrier Corporation | Hazard detector with optical status indicator |
US10697139B1 (en) * | 2019-07-04 | 2020-06-30 | Gary Goodwin | Electric road flare |
CN110440182B (en) * | 2019-08-05 | 2021-06-08 | 深圳市中能泰富科技股份有限公司 | Timing dustproof tunnel lighting equipment |
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- 1996-05-28 US US08/654,266 patent/US5785410A/en not_active Expired - Fee Related
-
1997
- 1997-05-27 CA CA002256317A patent/CA2256317C/en not_active Expired - Fee Related
- 1997-05-27 WO PCT/US1997/008905 patent/WO1997045596A2/en active Application Filing
- 1997-05-27 AU AU31429/97A patent/AU3142997A/en not_active Abandoned
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US1265386A (en) * | 1917-09-04 | 1918-05-07 | William B Richards | Illuminated traffic-button. |
US1572214A (en) * | 1924-01-21 | 1926-02-09 | Luther B Mcewing | Road-surface signal lamp |
US1839276A (en) * | 1927-08-24 | 1932-01-05 | Clarence P Taylor | Traffic button |
US4613847A (en) * | 1983-08-08 | 1986-09-23 | Life Light Systems | Emergency signal |
US4759735A (en) * | 1983-10-24 | 1988-07-26 | Frederic Pagnol | Solar cell powered beacon |
US4827245A (en) * | 1988-02-23 | 1989-05-02 | Falcor Group Inc. | Portable strobe light system |
US5103383A (en) * | 1990-08-23 | 1992-04-07 | Mayhew Donald M | Emergency flasher |
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US5213411A (en) * | 1991-11-26 | 1993-05-25 | Wheelock Inc. | Strobe light |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008109947A1 (en) * | 2007-03-12 | 2008-09-18 | Inventis Technology Pty Limited | A method, apparatus and system for alerting traffic |
Also Published As
Publication number | Publication date |
---|---|
US5785410A (en) | 1998-07-28 |
CA2256317A1 (en) | 1997-12-04 |
CA2256317C (en) | 2005-03-01 |
WO1997045596A3 (en) | 1998-02-05 |
AU3142997A (en) | 1998-01-05 |
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