KR20160125014A - Road lighting unit combined with solar module - Google Patents

Road lighting unit combined with solar module Download PDF

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Publication number
KR20160125014A
KR20160125014A KR1020150055595A KR20150055595A KR20160125014A KR 20160125014 A KR20160125014 A KR 20160125014A KR 1020150055595 A KR1020150055595 A KR 1020150055595A KR 20150055595 A KR20150055595 A KR 20150055595A KR 20160125014 A KR20160125014 A KR 20160125014A
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KR
South Korea
Prior art keywords
solar cell
cell module
light
housing
horizontal support
Prior art date
Application number
KR1020150055595A
Other languages
Korean (ko)
Inventor
기재권
Original Assignee
기재권
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by 기재권 filed Critical 기재권
Priority to KR1020150055595A priority Critical patent/KR20160125014A/en
Publication of KR20160125014A publication Critical patent/KR20160125014A/en

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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S9/00Lighting devices with a built-in power supply; Systems employing lighting devices with a built-in power supply
    • F21S9/02Lighting 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
    • F21S9/03Lighting 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
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V17/00Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
    • F21V17/10Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21VFUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V3/00Globes; Bowls; Cover glasses
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H01L31/00Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infra-red radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02SGENERATION OF ELECTRIC POWER BY CONVERSION OF INFRA-RED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
    • H02S40/00Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
    • H02S40/20Optical components
    • H02S40/22Light-reflecting or light-concentrating means
    • H05B37/02
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21WINDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2131/00Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
    • F21W2131/10Outdoor lighting
    • F21W2131/103Outdoor lighting of streets or roads
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02BCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B20/00Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
    • Y02B20/72Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps in street lighting
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy
    • Y02E10/52PV systems with concentrators

Abstract

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road lighting apparatus to which a solar cell module is coupled, and more particularly to a lighting apparatus for a road, which is used for a light source such as a street light, a security light, The illuminating device used for the light source of the light emitting display section which provides the driver with the accurate road information by emitting the light by emitting the light of the symbol, letter, number, figure, etc., The present invention relates to a lighting device for a road to which a battery module is coupled. A housing part having a predetermined space formed inside the housing, and an upper cover for opening / closing the housing part; And a connection portion formed on an outer surface of the enclosure; And a horizontal support coupled to the connection unit horizontally; A solar cell module disposed on the horizontal support for converting solar energy into electricity; A protruding transparent cover portion having a projecting shape spaced apart from the upper surface of the solar cell module and spaced apart from the lower surface of the upper surface of the solar cell module and sealingly engaged with the upper surface of the upper surface of the horizontal support, A power supply control unit for converting solar energy into electric energy through the solar cell module, the power supply control unit being embedded in the housing space of the enclosure space, A power supply unit including a battery for supplying power to the illumination unit, and a coupling unit for coupling to a structure formed on a lower surface of the casing.

Description

A lighting device for a road combined with a solar cell module,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a road lighting apparatus to which a solar cell module is coupled, and more particularly to a lighting system for a road lighting apparatus that is used for a light source such as a streetlight, a security lamp, A lighting apparatus used in a light source of a light emitting display unit which ensures accurate visibility at night by providing road information accurately to a driver by emitting light such as symbols, letters, numbers, figures and the like of a road sign, The present invention relates to a road lighting apparatus to which a solar cell module, which is used by storing light in a storage battery, is combined.

In recent years, global warming and climate change have led to restrictions on the emission of carbon dioxide globally, and it is required to develop a new generation device that does not emit carbon dioxide.

There is no such emission of carbon dioxide, and power generation devices using solar energy are representative of power generation devices using clean energy. Recently, as the development and installation costs of technologies have become cheaper, the spread is spreading.

In general, there is a problem that a streetlight, a security lamp, and the like, which are installed outdoors and illuminate at night, have to install an electric line underground through civil works. Especially, when there is no street light around the road of a driving vehicle, In addition, when road signs are not identifiable and there are roads with steep curves in the middle of the road, or where there are road signs to control the current state of the moving vehicle, such as traffic regulation, stoppage, The probability of an accident occurring when driving is high.

On the other hand, in order to solve the above problems, Korean Patent No. 10-1082853 (registered on Nov. 07, 2011) "illuminated road signboard" has been proposed, but there may be a problem in reduction of production cost.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and it is an object of the present invention to provide a solar cell module, a power supply unit, and a lighting device, And it is also possible to provide the driver with the ability to emit light at the display portion of letters, numerical figures, symbols, etc. that guide various information of the road to the road signs at night, This is to provide an improved road sign and to control the lighting device which stores the electricity generated by the solar cell module in a storage battery and uses it as a light source after sunset or at a necessary time.

According to an aspect of the present invention, A housing part having a predetermined space formed inside the housing, and an upper cover for opening / closing the housing part; And a connection portion formed on an outer surface of the enclosure; And a horizontal support coupled to the connection unit horizontally; A solar cell module disposed on the horizontal support for converting solar energy into electricity; A protruding transparent cover portion having a projecting shape spaced apart from the upper surface of the solar cell module and spaced apart from the lower surface of the upper surface of the solar cell module and sealingly engaged with the upper surface of the upper surface of the horizontal support, A power supply control unit for converting solar energy into electric energy through the solar cell module, the power supply control unit being embedded in the housing space of the enclosure space, A power supply unit including a battery for supplying power to the illumination unit, and a coupling unit for coupling to a structure formed on a lower surface of the casing.

In addition, the present invention provides a road lighting device incorporating a solar cell module packed with an inert gas or kept in a vacuum, inside a protruding transparent cover part.

In addition, the present invention provides a road lighting apparatus to which a solar cell module is coupled, further comprising a light diffusing unit for condensing, diffusing, scattering, and refracting solar light by directing solar light to the solar cell module.

Further, the present invention provides a road lighting apparatus to which a solar cell module having a plurality of connection portions is coupled.

In addition, the present invention provides a road lighting apparatus to which a solar cell module having a plurality of horizontal supports corresponding to the plurality of connection portions is coupled.

In addition, the present invention provides a road lighting device including a solar cell module serving as a streetlight or a security light for illuminating a light source toward the ground or its periphery.

In addition, the present invention is also applicable to a solar cell module having a function of emitting light to a light emitting display unit composed of at least one of letters, numbers, figures and symbols displayed on a road sign in a direction recognized by a driver of a vehicle A road lighting device is provided.

In addition, the present invention can be applied to a solar cell module including an Si crystal solar cell module, a Si thin film solar cell module, a CIGS thin film solar cell module, a CdTe thin film solar cell module, a III-V semiconductor solar cell module or an organic solar battery module, And a solar cell module in which one or more of the battery modules are selected and used.

As described above, according to the present invention, the road lighting device to which the solar cell module is coupled is designed to display letters, numerical figures, and symbols guiding the road on the road sign, It is possible to provide the driver with continuous safe road information to the light emitting display unit even under the harsh environmental conditions at night using the energy saving and the power charged with the sunlight.

In addition, there is an energy saving effect and a prevention of a crime accident at the same time by supplying the power of the lamp at night at the electricity stored in the street lamp, the security lamp, etc., using the sunlight.

1 is a plan view of a road lighting apparatus to which a solar cell module according to the present invention is coupled.
2 is a bottom view of a road lighting apparatus to which a solar cell module according to the present invention is coupled.
3 is a bottom view of another embodiment of a road lighting apparatus to which a solar cell module according to the present invention is coupled.
4 is a plan view of an enclosure of a road lighting apparatus to which a solar cell module according to the present invention is coupled.
FIG. 5 is a structural cross-sectional view illustrating a solar cell module, a protruding transparent cover, and an illumination unit coupled to a horizontal support of a road lighting apparatus to which the solar cell module according to the present invention is coupled.
6 is a perspective view of a light emitting display unit of a road lighting apparatus to which a solar cell module according to the present invention is coupled.
7 is a conceptual diagram of a power supply unit of a road lighting apparatus to which a solar cell module is coupled according to the present invention.
FIG. 8 is a view illustrating a state in which the road lighting apparatus to which the solar cell module according to the present invention is coupled is coupled to a vertical structure.

The features and advantages of the present invention will become more apparent from the following detailed description based on the accompanying drawings. Prior to this, terms and words used in the present specification and claims are to be interpreted in accordance with the technical idea of the present invention based on the principle that the inventor can properly define the concept of the term in order to explain his invention in the best way. It must be interpreted in terms of meaning and concept.

Hereinafter, a road lighting apparatus to which a solar cell module according to an embodiment of the present invention is coupled will be described in detail with reference to the accompanying drawings.

1 to 8, a road lighting apparatus A having a solar cell module according to a preferred embodiment of the present invention includes a housing 100, a housing 110, a connecting portion 310, a horizontal support 320 A solar cell module 111, a protruding transparent cover part 140, an illumination part 210, a power supply part 211, and a fastening part 212.

In the present invention, the enclosure 100 includes a receiving portion 212 having a predetermined space therein, and a connecting portion 212 is formed on the connecting portion 212. The connecting portion 212 is connected to a vertical structure or a horizontal structure, 110, and an upper lid 214 for opening and closing the receiving part 110. The material may be a plastic or a metal material, and the shape thereof may be rectangular, polygonal, circular, etc. As shown in FIG.

The horizontal supports 320 horizontally coupled to each other are connected to the connection unit 310 formed on the outer surface of the housing 100. The connection unit 310 includes a coupling groove having a groove, And a coupling unit for coupling with the coupling unit 310 may be formed at one end of the horizontal support unit 320 in cooperation with the coupling unit 310. In this case,

In addition, a solar cell module 111 for absorbing solar energy is disposed above the horizontal support table 320, and a space is maintained at a predetermined space above the solar cell module 111, And a protruding transparent cover part 140, which is mutually hermetically sealed to the upper circumferential surface of the horizontal support part 320, is coupled.

In addition, the connection unit 310 may include a plurality of horizontal support members 320. The horizontal support members 320 may be coupled to each other to receive sunlight in various directions to produce and store a large amount of electricity in the solar cell module 111, It can be interpreted as to double the effect of emitting light from an angle.

Here, the solar cell used in the solar cell module 111 may be a Si crystalline solar cell, a Si thin film solar cell, a CIGS thin film solar cell, a CdTe thin film solar cell, a III-V semiconductor solar cell or an organic solar cell, This is a photovoltaic cell designed to convert solar energy such as a battery into electric energy. It converts light energy generated from the sun into electric energy. When light is shined on a solar cell, Any photoelectric transformation material can be used without restrictions.

In addition, the solar cell module 111 of the present invention may be replaced with an Si crystalline solar cell module, a Si thin film solar cell module, a CIGS thin film solar cell module, a CdTe thin film solar cell module, a III-V semiconductor solar cell module, , A dye-sensitized solar cell module, or a solar cell module in which one or more of the dye-sensitized solar cell modules are selected and used.

According to the structure of the solar cell module 111, the photoelectric efficiency is different according to the angle of incidence of sunlight and the wavelength of the sunlight, and therefore, ultraviolet rays, visible rays, and the like It is possible to variably use the solar cell module 111 favorable to the wavelength so as to selectively use it.

The protruding transparent cover part 140 may be a transparent plastic material (PC, PMMA, PE or the like) or a glass material. The protruding transparent cover part 140 may be formed of a transparent material, A reflective lens may be further provided so as to have at least one concave-convex shape or to improve the solar power generation efficiency by improving the egg production rate of sunlight.

The protruding transparent cover part further includes a light diffusion part 213 that condenses, diffuses, scatters, and refracts sunlight by guiding sunlight to the solar cell module, The surface area of the protruding transparent cover 140 is greatly increased, so that the amount of condensed light can be greatly increased. When the convex lens is formed in a convex lens shape or a prism shape, The light is irradiated at an angle close to a right angle to the solar cell module 111 even in the morning and evening hours when the sunlight is greatly obliquely irradiated while the sunlight is refracted.

A seating part 119 for stably sealing the protruding transparent cover part 140 is formed along the upper edge part on the upper surface of the horizontal support part 320 and the protruding transparent cover part 140 The flange portion 118 of the flange portion 118 is seated and engaged. At this time, the seat portion 119 of the horizontal support 320 and the flange portion 118 of the protruding transparent cover portion 140 are tightly coupled to each other by the elastic sealing member 300 so as to be firmly and tightly engaged with each other, .

At this time, the sealing member 300 can be used as long as it is stretchable by synthetic rubber, silicone material, synthetic resin, or the like and is excellent in blocking moisture and air.

In addition, the inside of the protruding transparent cover part 140 is filled with an inert gas or held in a vacuum state. This prevents contact between the solar cell module 111 and air or moisture, So that the life of the solar cell module 111 can be maximized for a long time.

A light emitting diode 210 for emitting a light source is coupled to a lower surface of the horizontal support member 320. A light emitting diode (LED) is preferably used for the light emitting unit 210, As the device, all kinds of light emitting devices that can emit light such as a laser diode, an organic EL, an LCD, a field emission device, and an E-paper can be applied. In a corresponding manner.

The illumination unit 210 functions as a streetlight or a security lamp that illuminates a light source on a sidewalk, a roadway, a highway or a park, a waterfront space, etc. In particular, And a mounting member for maintaining a gap between the horizontal support 320 and the illumination unit 210 may be coupled to the illumination unit 210. The illumination unit 210, to which the one or more mounting members are coupled, .

The illuminating unit 210 illuminates the light emitting display 200, which is composed of at least one of letters, numbers, figures, and symbols displayed on the road sign in a direction recognized by the driver of the vehicle, The light emitting device of the illumination unit 210 is connected to the letters, numbers, figures, symbols, etc. formed in the light emitting display unit 200 to emit light. Therefore, light is emitted to the light emitting display unit 200 of the road sign, So that night visibility can be ensured. That is, as the light emitting element emits light in a predetermined pattern programmed in the control circuit part built in the housing part 110 inside the housing 100, for example, always on or continuously blinking, The light emitting display unit 200 can be clearly grasped by the naked eye, thereby ensuring night visibility.

Here, the light emitting display 200 includes a plurality of optical fibers, and the light emitting elements of the illumination unit 210 connected to one end of the optical fiber are installed to emit light from the light source. The light emitted from the light source is transmitted through the optical fiber, The light is emitted to the front surface of the light emitting display 200 to thereby improve the visibility of characters, numbers, figures, and symbols of the light emitting display 200

The power supply control unit 120 of the power supply unit 211 converts solar energy absorbed through the solar cell module 111 into electric energy is stored in the storage unit 110 of the inner space of the housing 100, The power supply control unit 120 and the storage battery 130 are connected to the power supply control unit 120 and the storage battery 130 through the power supply unit 120, (110) so as to block exposure to the outside.

The power control unit 120 may include a sensor for sensing the amount of light detected from the outside, and may be configured to emit light according to the amount of light sensed by the sensor.

The coupling part 212 is formed on the lower surface of the housing 100 to be coupled to a vertical structure or a horizontal structure. The coupling part 212 may be formed by a bolt, a nut or the like through a fastening hole And it is preferable that it is composed of a variety of binding members and binding methods with a rigid metal material.

Optimal embodiments have been disclosed in the drawings and specification. Although specific terms have been employed herein, they are used for purposes of illustration only and are not intended to limit the scope of the invention as defined in the claims or the claims. Therefore, those skilled in the art will appreciate that various modifications and equivalent embodiments are possible without departing from the scope of the present invention. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.

A: Illumination device combined with a solar cell module 100: Housing 110:
111: solar cell module 118: planar part 119: seat part 120: power source control part
130: storage battery 140: protruding transparent cover part 200: light emitting display part 210: illuminating part
211: power supply part 212: fastening part 213: light diffusing part 214: upper cover
300: sealing member 310: connecting portion 320: horizontal support

Claims (8)

A multifaceted housing;
A housing part having a predetermined space formed inside the housing, and an upper cover for opening / closing the housing part; And
A connecting portion formed on the outer surface of the housing; Wow
A horizontal support coupled horizontally to the connection; And
A solar cell module disposed above the horizontal support for converting solar energy into electricity; and
A protruding transparent cover portion having a projecting shape spaced apart from the upper surface of the solar cell module and spaced apart from the lower surface of the solar cell module and sealing the upper surface of the solar cell module,
An illumination unit coupled to a lower surface of the horizontal support to emit a light source,
A power supply control unit built in the housing space of the enclosure space to convert solar energy into electric energy through the solar cell module; and a storage battery for storing electric energy converted from the power supply control unit and supplying power to the illumination unit A power supply unit,
And a fastening portion formed on a lower surface of the housing for coupling to a structure.
The light-emitting device according to claim 1,
Wherein the solar cell module is charged with an inert gas or held in a vacuum state.
3. The method according to claim 1 or 2,
Wherein the protruding transparent cover part further comprises a light diffusing part for guiding solar light to the solar cell module to condense, diffuse, scatter, and refract the sunlight to the solar cell module.
The method according to claim 1 or 2,
Wherein the connection portion is formed of a plurality of solar cell modules.
The method according to claim 1 or 2 or 3 to 4,
Wherein the horizontal support member comprises a plurality of horizontal support members corresponding to the plurality of connection portions.
The method according to claim 1 or 2 or 3 or 4 to 5,
Wherein the illumination unit serves as a streetlight or a security lamp that illuminates the light source toward the ground or the periphery, and a landscape illumination lamp.
The method according to claim 1 or 2 or 3 or 4 to 5,
Wherein the illumination unit is operable to emit a light source to a light emitting display unit formed of at least one of letters, numbers, figures, and symbols displayed on a road sign in a direction recognized by a driver of the vehicle. Road lighting equipment.
8. The method of claim 1, 2, 3, 4, 5, 6, or 7,
The solar cell module may be any one of a Si crystal solar cell module, a Si thin film solar cell module, a CIGS thin film solar cell module, a CdTe thin film solar cell module, a III-V semiconductor solar cell module, an organic solar battery module, One or more of the plurality of solar cell modules are selected and used.
KR1020150055595A 2015-04-21 2015-04-21 Road lighting unit combined with solar module KR20160125014A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020150055595A KR20160125014A (en) 2015-04-21 2015-04-21 Road lighting unit combined with solar module

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020150055595A KR20160125014A (en) 2015-04-21 2015-04-21 Road lighting unit combined with solar module

Publications (1)

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KR20160125014A true KR20160125014A (en) 2016-10-31

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102160625B1 (en) 2020-01-07 2020-09-29 주식회사 유일라이팅 A solar street light
KR102183052B1 (en) * 2020-03-02 2020-11-25 서홍욱 sign boards for climbing way

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR102160625B1 (en) 2020-01-07 2020-09-29 주식회사 유일라이팅 A solar street light
KR102183052B1 (en) * 2020-03-02 2020-11-25 서홍욱 sign boards for climbing way

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