EP0050623A1 - Solar powered street lighting system - Google Patents
Solar powered street lighting systemInfo
- Publication number
- EP0050623A1 EP0050623A1 EP19810900350 EP81900350A EP0050623A1 EP 0050623 A1 EP0050623 A1 EP 0050623A1 EP 19810900350 EP19810900350 EP 19810900350 EP 81900350 A EP81900350 A EP 81900350A EP 0050623 A1 EP0050623 A1 EP 0050623A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- battery
- light
- panels
- pole
- coupled
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
- F21S9/043—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator driven by wind power, e.g. by wind turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S8/00—Lighting devices intended for fixed installation
- F21S8/08—Lighting devices intended for fixed installation with a standard
- F21S8/085—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light
- F21S8/086—Lighting devices intended for fixed installation with a standard of high-built type, e.g. street light with lighting device attached sideways of the standard, e.g. for roads and highways
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/026—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by using wind power, e.g. using wind turbines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/02—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator
- F21S9/03—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light
- F21S9/035—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a battery or accumulator rechargeable by exposure to light the solar unit being integrated within the support for the lighting unit, e.g. within or on a pole
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/09—Arrangements for giving variable traffic instructions
- G08G1/095—Traffic lights
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S9/00—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
- F21S9/04—Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply the power supply being a generator
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/72—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
Definitions
- the invention relates to street lighting and traffic systems; and, more particularly, to a solar powered totally independent combination street lighting and traffic control system.
- a solar powered street lighting system that istotally independent of any external power suply.
- Solar panels are connected in such a manner to charge a maintenance-free storage battery with sufficient capacity to light street lights and/or traffic signals.
- An auxiliary generator may also be provided having a wind driven vane for also delivering capacity to the battery if sufficient sun light is not available.
- the drawing is a vertical view of a street light and traffic signal system in accordance with the teachings of the invention.
- System 10 includes an upright pole 11 having a base 12 adapted to rest on a supporting surface 13.
- a plurality of solar cell panels 14 are fixedly mounted on a rod or shaft 15 at the upper end of pole 11.
- An alternator 16 is also secured to the top of pole 11 below panels 14.
- a windmill 17 is coupled to the internal shaft (now shown) of alternator 16.
- Any suitable alternator may be used, such as a conventional 12V. D.C. alternator.
- any D.C. generator, or A.C. generator in combination with rectifying means may be used.
- a street light 18 extends from pole 11 and a maintenance-free storage battery 19 is disposed in the base 12 of pole 11.
- a conventional regulator 20 is disposed in pole 11 below generator 15 coupled to both battery 19 and generator 16 (and panels 14, if generator 16 is eliminated).
- Street light 18 includes a lamp housing 21 having a lamp 22 and a photocell 23 coupled thereto.
- a traffic signal light 24 is also provided on pole 11 below light 18 having the ususal red, green and yellow or caution lights
- a pedestrian signal 28 may also be disposed on pole 11 below light 24 having suitable lighted pedestrian cautioning indicia 29 as is well known in the art.
- the position of the various components on pole 11 may be varied as desired. Further, certain components, as will be discussed, may be optional. For example, system 19 may be used without the pedestrian signal 28 if such is not needed out in the field. Traffic signal light 24 may also be omitted if only a street light 18 is required.
- the voltage of battery 19 will be dependent on the wattage required for producing the luminosity necessary for the various lights.
- Panels 14 comprise a plurality of individual solar cell panels 30 having solar cells therein connected in series to provide enough voltage, as for example, 12 volts, to charge a preselected battery 19, as for example, a three year maintenance free dry storage battery. For example, a 12 volt, 100 amp battery may be used in each system 10. Each panel 30 is connected in parallel to provide sufficient amperage for battery 19.
- a description of a solar battery sufficient for purposes of my invention made up of several solar cells appears on pages 14-16 of "Solar Cells and Photocells", Rufus P. Turner, 1975.
- the solar battery described on page 16 of Solar Cells consists of a panel of 30 1/2 volt silicon photovoltaic cells connected in series with a diode which prevents backflow of current from the battery through the cells dudring darkness. In bright sunlight, this battery delivers 12 volts of 0,1 amps and has a capacity of 30 . watt-hours per week. In our system 10, we can supplement this by using more panels connected in parallel to obtain more current.
- alternator 16 which may be optional, is provided having windmill 17 which is rotated by wind to drive the alternator 16 and continuously generate a source of power for battery 19. It is to be understood that suitable electrical conduits (not shown) extend between battery 19 and the various components of system 10.
- panels 14 alone may be sufficient to provide sufficient voltage to battery 19.
- the combinator of panels 14 and alternator 16 generates sufficient voltage in all climates and under all weather conditions to charge a three-year maintenance free battery 19.
- Regulator 20 assures constant charge to battery 19 under all wind speeds and variations on the amount of sun light.
- Bulb 22 is selected to match the voltage of battery 19 as are the lights 25 through 27 and signal 28.
- Photocell 28 is automatically actuated by light to switch on bulb 22 when the sun sets and switch bulb 22 off when the sun appears. This is sufficient for tropical and temperate zones; in polar zones, a timer switch (not shown) may be substituted. Although a battery 19 of a preselected amperage and voltage has been disclosed, obviously much higher amperage can be used which would make the system 10 independent for longer periods of time and render auxiliary power means, such as alternator 16, unnecessary. Of course, system 19 can be coupled to a main power supply to provide back-up but it is not necessary in most environments.
- Traffic light 24 can be any suitable type.
- the emergency flashing lights used on police cars can be adapted to system 10 since such lights are low-powered and fulfil safety requirements.
- light bars drawing 19 amps operating at 12 volts are known in the art.
- Various street lights may of course be used, as discussed above, as for example, the relatively new quartz-halogen bulbs of suitable wattage, as 100 watts.
- bulbs of other wattage and type such as 175W, 400W, 250W, mercury vapor type, may be used.
- a control board 31 may be provided on pole 11 having signal lights 32 or the like electronically coupled to the various components of system 10 for indiciating the state thereof. Although board 31 is shwon exposed, it may be internal of pole 11 with access available through a door or the like on pole 11.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Photovoltaic Devices (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
Un systeme d'eclairage solaire de rues est totalement independant de toute alimentation en energie exterieure. Des panneaux solaires (14) sont connectes de maniere a charger une batterie d'accumulateur sans entretien (19) avec une capacite suffisante pour allumer des lampes de rues (21) et/ou des feux de signalisation (24-27). Un generateur auxiliaire (16) peut etre egalement prevu, lequel possede une aube entrainee par le vent (17) pour charger egalement la batterie s'il n'y a pas assez de lumiere solaire.A solar street lighting system is completely independent of any external energy supply. Solar panels (14) are connected to charge a maintenance-free storage battery (19) with sufficient capacity to light street lamps (21) and / or signal lights (24-27). An auxiliary generator (16) can also be provided, which has a wind-driven dawn (17) to also charge the battery if there is not enough sunlight.
Description
SOLAR POWERED STREET LIGHTING SYSTEM
BACKGROUND OF THE INVENTION
Field of the Invention The invention relates to street lighting and traffic systems; and, more particularly, to a solar powered totally independent combination street lighting and traffic control system.
Description of the Prior Art Various street lighting systems are used throughout the world. Such systems consume quite a but of energgy and require much maintenance. In recent years, because of the shortage of fuel, there has been increased interest in the use of energy from the sun and wind power as substitutes for fossil fuels. There is thus a need for utilizing these concepts in street lighting and traffic systems to save on the costs of such fuels and conserve such fuels. further, a totally independent solar powered system will save on installation costs since it does not require connection to a main power system and will operate even in blackout situations since it is not dependent on a main power supply and thus will save lives during emergencies caused by blackouts.
Further, there is a need for such a system which can be readily modified to deliver any desired wattage so that any suitable bulb may be illuminated.
SUMMARY OF THE INVENTION
It is an object of this invention to provide a solar powered street lighting system totally independent of an external power supply. It is a further object of this inveniton to provide such a system which includes an auxiliary wind driven
generator for augmenting the capacity of the system battery.
It is still another object of this invention to provide such a system which includes optional traffic signals therein.
These and other objects are preferably accomplished by providing a solar powered street lighting system that istotally independent of any external power suply. Solar panels are connected in such a manner to charge a maintenance-free storage battery with sufficient capacity to light street lights and/or traffic signals. An auxiliary generator may also be provided having a wind driven vane for also delivering capacity to the battery if sufficient sun light is not available.
Brief Description of the Drawing
The drawing is a vertical view of a street light and traffic signal system in accordance with the teachings of the invention.
Description Of The Preferred Embodiment
Referring now to the drawing, a solar powered combination street light and traffic signal light system 10 is shown. System 10 includes an upright pole 11 having a base 12 adapted to rest on a supporting surface 13. As particularly contemplated in the teachings of my invention, a plurality of solar cell panels 14 are fixedly mounted on a rod or shaft 15 at the upper end of pole 11. An alternator 16 is also secured to the top of pole 11 below panels 14. A windmill 17 is coupled to the internal shaft (now shown) of alternator 16. Any suitable alternator may be used, such as a conventional 12V. D.C. alternator. In fact, any D.C. generator, or A.C. generator in combination with rectifying means, may be used. A street light 18 extends from pole 11 and a maintenance-free storage battery 19 is disposed in the base 12 of pole 11. A conventional
regulator 20 is disposed in pole 11 below generator 15 coupled to both battery 19 and generator 16 (and panels 14, if generator 16 is eliminated).
Street light 18 includes a lamp housing 21 having a lamp 22 and a photocell 23 coupled thereto. A traffic signal light 24 is also provided on pole 11 below light 18 having the ususal red, green and yellow or caution lights
25 through 27 thereon. A pedestrian signal 28 may also be disposed on pole 11 below light 24 having suitable lighted pedestrian cautioning indicia 29 as is well known in the art. The position of the various components on pole 11 may be varied as desired. Further, certain components, as will be discussed, may be optional. For example, system 19 may be used without the pedestrian signal 28 if such is not needed out in the field. Traffic signal light 24 may also be omitted if only a street light 18 is required.
The voltage of battery 19 will be dependent on the wattage required for producing the luminosity necessary for the various lights.
Panels 14 comprise a plurality of individual solar cell panels 30 having solar cells therein connected in series to provide enough voltage, as for example, 12 volts, to charge a preselected battery 19, as for example, a three year maintenance free dry storage battery. For example, a 12 volt, 100 amp battery may be used in each system 10. Each panel 30 is connected in parallel to provide sufficient amperage for battery 19. A description of a solar battery sufficient for purposes of my invention made up of several solar cells appears on pages 14-16 of "Solar Cells and Photocells", Rufus P. Turner, 1975.
It can be seen from pages 14 and 15 that, at 2000 foot candles, the average open-circuit output voltage of a typical silicon cell is approximately 0.3 to 0.6 volts. Thus, the solar battery described on page 16 of Solar Cells consists of a panel of 30 1/2 volt silicon photovoltaic
cells connected in series with a diode which prevents backflow of current from the battery through the cells dudring darkness. In bright sunlight, this battery delivers 12 volts of 0,1 amps and has a capacity of 30 . watt-hours per week. In our system 10, we can supplement this by using more panels connected in parallel to obtain more current.
Thus, silicon cells and arrays are well known for light energy conversion. Solar power conversation systems are available that are directly coupled with battery charger energy storage systems.
The assembly of panels 14, when exposed to sun light, generates sufficient voltage to charge battery 19 in good weather. However, in order that system 10 is effective year round and in all weather conditions, alternator 16, which may be optional, is provided having windmill 17 which is rotated by wind to drive the alternator 16 and continuously generate a source of power for battery 19. It is to be understood that suitable electrical conduits (not shown) extend between battery 19 and the various components of system 10.
In mild climates, as Southern California, panels 14 alone may be sufficient to provide sufficient voltage to battery 19. The combinator of panels 14 and alternator 16 generates sufficient voltage in all climates and under all weather conditions to charge a three-year maintenance free battery 19.
Regulator 20 assures constant charge to battery 19 under all wind speeds and variations on the amount of sun light. Bulb 22 is selected to match the voltage of battery 19 as are the lights 25 through 27 and signal 28.
Photocell 28 is automatically actuated by light to switch on bulb 22 when the sun sets and switch bulb 22 off when the sun appears. This is sufficient for tropical and temperate zones; in polar zones, a timer switch (not shown) may be substituted.
Although a battery 19 of a preselected amperage and voltage has been disclosed, obviously much higher amperage can be used which would make the system 10 independent for longer periods of time and render auxiliary power means, such as alternator 16, unnecessary. Of course, system 19 can be coupled to a main power supply to provide back-up but it is not necessary in most environments.
Traffic light 24 can be any suitable type. For example, the emergency flashing lights used on police cars can be adapted to system 10 since such lights are low-powered and fulfil safety requirements. For example, light bars drawing 19 amps operating at 12 volts are known in the art. Various street lights may of course be used, as discussed above, as for example, the relatively new quartz-halogen bulbs of suitable wattage, as 100 watts. Of course, bulbs of other wattage and type, such as 175W, 400W, 250W, mercury vapor type, may be used.
If desired, a control board 31 may be provided on pole 11 having signal lights 32 or the like electronically coupled to the various components of system 10 for indiciating the state thereof. Although board 31 is shwon exposed, it may be internal of pole 11 with access available through a door or the like on pole 11.
It can be seen that I have described a system which can be modified to provide solar panels which deliver any desired wattage thus enabling bulbs of various brightness and type to be used. Preexisting light poles can be quickly and easily modified to provide solar energy in accordance with the teachings of my invention.
Claims
I claim : 1. A totally independnet street light system comprising: an upright pole adapted to be mounted on a supporting surface; a dry storage battery; a plurality of solar panels, coupled to said battery, each of said panels having a plurality of solar cells connected in series for providing a predetermined voltage to said battery, each of said panels conencted in parallel to provide a predetermined amperage to said battery; and a light mounted on said pole electrically coupled to said battery and actuated by said battery.
2. In the system of claim 1 including wind driven alternator means mounted on said pole coupled to said battery for providing capacity to said battery augmenting said solar panels.
3. In the system of claim 1 wherein said light is a street light, and a light actuated photocell coupled t said light for selectively lighting said light dependent upon light conditions at said pole.
4. In the system of claim 3 further including a traffic signal mounted on said pole electrically connected to said battery.
5. In the system of claim 1 wherein said battery is a 12V. 100 amp, D.C. three-year maintenance free dry storage battery.
6. In the system of claim 5 wherein said light is a 12 Volt D.C. light.
7. In the system of claim 1 wherein each of said panels comprises at least thirty 1/2 Volt silicon photovoltaic cells connected in series with a diode to prevent backflow of current from the battery through the cells during darkness, the total number of said panels mounted in parallel being sufficient to provide a total current output to return said battery to its rated amperage capacity after lighting of said light.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/US1980/000526 WO1981003215A1 (en) | 1980-04-28 | 1980-04-28 | Solar powered street lighting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP0050623A1 true EP0050623A1 (en) | 1982-05-05 |
Family
ID=22154327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP19810900350 Withdrawn EP0050623A1 (en) | 1980-04-28 | 1980-04-28 | Solar powered street lighting system |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP0050623A1 (en) |
| WO (1) | WO1981003215A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360509A (en) * | 2019-07-23 | 2019-10-22 | 安徽鹏祥新能源有限公司 | A kind of new energy pilot indicating lamp with tide protection |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0225950A1 (en) * | 1985-11-05 | 1987-06-24 | Hung-Chie Tsai | Self-powered computerized advertisement board |
| GB2246173A (en) * | 1990-07-20 | 1992-01-22 | Brian Wellesley Temple | Wind powered electric lamp |
| GB2248473A (en) * | 1990-10-01 | 1992-04-08 | Alan Charles Pepper | Wind driven warning device |
| WO1993013355A1 (en) * | 1992-01-02 | 1993-07-08 | Markku Moilanen | Post lamp |
| FR2689996A1 (en) * | 1992-04-14 | 1993-10-15 | Sagem | Set of two beacons transmitting road signaling signals and associated on-board receiver. |
| GB2286637A (en) * | 1994-02-10 | 1995-08-23 | Eurowind Power Systems | Support apparatus for wind turbines and electrical equipment |
| DE29701055U1 (en) * | 1997-01-22 | 1997-03-13 | PKV Brandenburg GmbH, 46514 Schermbeck | Advertising device using environmentally friendly energies such as sun and wind |
| FR2798214A1 (en) * | 1999-09-03 | 2001-03-09 | Claude Noerdinger | AUTONOMOUS ELECTRONIC LUMINOUS DISPLAY DEVICE POWERED BY SOLAR AND WIND ENERGY UTILIZING SOURCES OF LIGHT WITH LOW POWER CONSUMPTION AND HIGH LUMINOUS EFFICIENCY |
| GB0007626D0 (en) * | 2000-03-29 | 2000-05-17 | Alpa Ind Ltd | Road lamp |
| GB2372382A (en) * | 2000-10-20 | 2002-08-21 | Electronic Solar Products Ltd | Solar and wind powered lighting unit |
| NL1027162C2 (en) * | 2004-10-01 | 2006-04-04 | In Lite Design B V | Rechargeable object lighting. |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2894173A (en) * | 1955-10-03 | 1959-07-07 | Hoffman Electronics Corp | Solar powered light source or the like |
| US2901669A (en) * | 1958-06-06 | 1959-08-25 | Servel Inc | Daytime off solar cell flasher circuit |
| US3048833A (en) * | 1960-05-13 | 1962-08-07 | George W Bernheim | Photoelectric control device for street lights |
| US3317809A (en) * | 1963-12-26 | 1967-05-02 | Grover W Bowers | Self-contained electrical lighting unit |
| US3353191A (en) * | 1965-07-01 | 1967-11-21 | Harold W Dahly | Cooling unit for a hat |
| US3508731A (en) * | 1968-01-04 | 1970-04-28 | Mc Graw Edison Co | Pole top luminaire mounting device |
| US3774023A (en) * | 1972-06-28 | 1973-11-20 | Braun Ag | Flashlight |
| JPS5095744A (en) * | 1973-12-25 | 1975-07-30 | ||
| US4041452A (en) * | 1975-02-10 | 1977-08-09 | Moya Castulo J | A rotating beacon for a bicycle |
| US4009535A (en) * | 1975-10-01 | 1977-03-01 | William Stock | Illuminated house number sign |
| US4080221A (en) * | 1976-11-09 | 1978-03-21 | Manelas Arthur J | Solar cell electric and heating system |
-
1980
- 1980-04-28 EP EP19810900350 patent/EP0050623A1/en not_active Withdrawn
- 1980-04-28 WO PCT/US1980/000526 patent/WO1981003215A1/en unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO8103215A1 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110360509A (en) * | 2019-07-23 | 2019-10-22 | 安徽鹏祥新能源有限公司 | A kind of new energy pilot indicating lamp with tide protection |
Also Published As
| Publication number | Publication date |
|---|---|
| WO1981003215A1 (en) | 1981-11-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4200904A (en) | Solar powered street lighting system | |
| US4384317A (en) | Solar powered lighting system | |
| US4281369A (en) | Method and apparatus for solar power lighting | |
| US9920895B2 (en) | Street light | |
| WO2002033311A1 (en) | Solar and wind powered lighting | |
| EP0050623A1 (en) | Solar powered street lighting system | |
| JPH07177683A (en) | Solar cell unit | |
| US9797566B2 (en) | Self-powered street light | |
| GB2246173A (en) | Wind powered electric lamp | |
| GB2408395A (en) | Cylindrical solar street light | |
| KR200209969Y1 (en) | Street lighting system powered by wind and solar in support of commercial electricity | |
| KR200297513Y1 (en) | Solar street lighting with tracking system | |
| KR20170060326A (en) | Street light having a wireless surveillance camera and Control method thereof | |
| KR20160086588A (en) | Solar street light controlled by smart phone | |
| JP2002270381A (en) | Street light | |
| Oke et al. | Design and construction of solar power-based lighting system | |
| JPH06348211A (en) | Solar luminous type traffic signal | |
| CN200993329Y (en) | Wind light complementary road lamp lighting system | |
| KR101740246B1 (en) | Street light having a high efficiency charging device for renewable energy and Control method thereof | |
| CN213818272U (en) | Double-power-point tracking solar lamp driving circuit | |
| CN213089703U (en) | Solar lamp that stainless steel double cell switches | |
| DE3838797A1 (en) | Combination lamp/current generator (recycling of light energy) | |
| WO2014077676A1 (en) | Lighting unit for street furniture | |
| DE19917108A1 (en) | Pocket torch has photovoltaic charging of energy storage device, one or more white light emitting LEDs, whereby all LEDs can be used irrespective of manner of generating white light | |
| KR102555198B1 (en) | Voltage controllable solar and wind power street light apparatus using super capacitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE FR GB LU NL SE |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
| 18D | Application deemed to be withdrawn |
Effective date: 19820628 |