CN112212269A - Novel solar street lamp that generating efficiency is high - Google Patents
Novel solar street lamp that generating efficiency is high Download PDFInfo
- Publication number
- CN112212269A CN112212269A CN201910625333.6A CN201910625333A CN112212269A CN 112212269 A CN112212269 A CN 112212269A CN 201910625333 A CN201910625333 A CN 201910625333A CN 112212269 A CN112212269 A CN 112212269A
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- fixedly connected
- street lamp
- solar street
- block
- novel solar
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- 230000005540 biological transmission Effects 0.000 claims abstract description 27
- 238000010248 power generation Methods 0.000 claims abstract description 17
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 239000011651 chromium Substances 0.000 claims description 3
- 230000005611 electricity Effects 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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- 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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V23/00—Arrangement of electric circuit elements in or on lighting devices
- F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S20/00—Supporting structures for PV modules
- H02S20/30—Supporting structures being movable or adjustable, e.g. for angle adjustment
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
- H02S40/20—Optical components
- H02S40/22—Light-reflecting or light-concentrating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2131/00—Use or application of lighting devices or systems not provided for in codes F21W2102/00-F21W2121/00
- F21W2131/10—Outdoor lighting
- F21W2131/103—Outdoor lighting of streets or roads
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- 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
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/52—PV systems with concentrators
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Photovoltaic Devices (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
The invention relates to the technical field of road lighting equipment, and discloses a novel solar street lamp with high power generation efficiency. This novel solar street lamp that generating efficiency is high, use through wormhole form matte, the unique structure of wormhole form matte, increase the incidence of solar cell panel light, reduce the reflection, use through the cooperation of spotlight piece and fresnel lens, spotlight piece has increased the irradiance of light, fresnel lens's inside texture has the focus function, thereby the utilization ratio of solar energy has been improved, use through the motor, the output shaft of motor drives the chain and rotates, the rotation of chain drives transmission and rotates at the inside of cover piece, thereby change the angle of rack, adapt to the irradiant angle of different time quantum, and then improve the utilization ratio of solar energy, the high mesh of generating efficiency has been realized.
Description
Technical Field
The invention relates to the technical field of road lighting equipment, in particular to a novel solar street lamp with high power generation efficiency.
Background
Solar energy is inexhaustible, clean, pollution-free and renewable green energy, photovoltaic energy is regarded as the most important new energy in twenty-first century, and solar street lamps do not need to lay cables, need not alternating current power supply and do not produce the charges of electricity, adopt direct current power supply control, have the advantages of good stability, long service life, high luminous efficiency, simple and convenient installation and maintenance, high safety performance, energy conservation, environmental protection, economy and practicality and the like, and can be widely applied to places such as city main roads, secondary roads, districts, factories, tourist attractions and parking lots.
The solar street lamp is composed of an LED light source, a solar cell panel, a storage battery, a solar street lamp controller, a street lamp pole, auxiliary material wires and the like, the existing solar street lamp has the defect of low power generation efficiency of the solar cell panel in the use process, the stored electric energy is less, the number of lighting days of the solar street lamp in rainy season is shorter, the working time is reduced, and therefore the novel solar street lamp with high power generation efficiency is provided to solve the problem.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a novel solar street lamp with high power generation efficiency, which has the advantages of high power generation efficiency and the like, and solves the problems that the power generation efficiency of a solar panel is low in the use process of the conventional solar street lamp, the stored electric energy is less, the number of lighting days of the solar street lamp in rainy seasons is shorter, and the working time is shortened.
(II) technical scheme
In order to achieve the purpose of high power generation efficiency, the invention provides the following technical scheme: a novel solar street lamp with high power generation efficiency comprises a base, wherein a lamp post is fixedly connected to the top of the base, a fixed rod is fixedly connected to the left side of the lamp post, a reinforcing plate is fixedly connected to the left side of the lamp post and is positioned at the top of the fixed rod, an LED lamp is fixedly connected to the left side of the fixed rod, a power storage box is fixedly connected to the left side of the lamp post and is positioned at the top of the reinforcing plate, a motor is fixedly connected to the front side of the lamp post, a chain is movably connected to the output shaft of the motor, a transmission device is movably connected to one end of the chain away from the motor, a sleeve block is movably connected to the outer side of the transmission device, a lamp post is fixedly connected to the bottom of the sleeve block, a connecting rod is fixedly connected to the top of the transmission device and is positioned, the top fixedly connected with Fresnel lens of spotlight piece, Fresnel lens's top fixedly connected with protection transparent plate, the inside fixedly connected with solar cell panel of rack, solar cell panel's top fixedly connected with worm hole form matte.
Preferably, the sleeve block comprises a round block, a round groove is formed in the round block, and a movable groove formed in the round block is fixedly connected to the top of the round groove.
Preferably, the transmission device consists of a chain wheel and a round shaft, the front surface of the round shaft is fixedly connected with the chain wheel, and one end, far away from the chain wheel, of the round shaft penetrates through and extends to the inside of the sleeve block.
Preferably, the bottom of the connecting rod extends through the sleeve block and the transmission device and extends to the interior of the transmission device.
Preferably, a placing groove is formed in the placing frame, and the size of the placing groove is equal to the sum of the volumes of the solar cell panel and the wormhole-shaped suede.
Preferably, the light gathering block is a chromium light gathering block which is hollow inside and has a missing top and a missing bottom, and the size of the protective transparent plate is equal to that of the Fresnel lens.
(III) advantageous effects
Compared with the prior art, the invention provides a novel solar street lamp with high power generation efficiency, which has the following beneficial effects:
1. this novel solar street lamp that generating efficiency is high, use through wormhole form matte, the unique structure of wormhole form matte, increase the incidence of solar cell panel light, reduce the reflection, use through the cooperation of spotlight piece and fresnel lens, spotlight piece has increased the irradiance of light, fresnel lens's inside texture has the focus function, thereby the utilization ratio of solar energy has been improved, use through the motor, the output shaft of motor drives the chain and rotates, the rotation of chain drives transmission and rotates at the inside of cover piece, thereby change the angle of rack, adapt to the irradiant angle of different time quantum, and then improve the utilization ratio of solar energy, the high mesh of generating efficiency has been realized.
2. This novel solar street lamp that generating efficiency is high through the use of protecting the transparent plate, avoids fresnel lens and inside solar cell panel to be corroded by the rainwater, produces the harm, has prolonged the life of this device, and through the use of chain, the chain can keep accurate average drive ratio when rotating, and transmission efficiency is higher, and the overload capacity is strong, can be better work under the low-speed heavy load to make the removal of rack more stable, realized the high purpose of practicality.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of the construction of the nest block of the present invention;
FIG. 3 is an enlarged view of the invention at A in FIG. 1.
In the figure: the LED lamp comprises a base 1, a lamp post 2, a fixing rod 3, a reinforcing plate 4, an LED lamp 5, an electricity storage box 6, a motor 7, a chain 8, a transmission device 9, a sleeve block 10, a round block 1001, a round groove 1002, a movable groove 1003, a connecting rod 11, a placing frame 12, a light gathering block 13, a Fresnel lens 14, a protective transparent plate 15, a solar cell panel 16 and a wormhole-shaped suede 17.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-3, a novel solar street lamp with high power generation efficiency comprises a base 1, a lamp post 2 fixedly connected to the top of the base 1, a fixing rod 3 fixedly connected to the left side of the lamp post 2, a reinforcing plate 4 fixedly connected to the left side of the lamp post 2 and located at the top of the fixing rod 3, an LED lamp 5 fixedly connected to the left side of the fixing rod 3, a power storage box 6 fixedly connected to the left side of the lamp post 2 and located at the top of the reinforcing plate 4, a motor 7 fixedly connected to the front side of the lamp post 2, the motor 7 being i HSV60-30-40-48 in type, which is an auxiliary motor indirect speed change device, capable of controlling speed and position precision, converting voltage signals into torque and rotation speed to drive a control object, the rotor rotation speed being controlled by input signals and capable of fast reacting, a chain 8 movably connected to the output shaft of the motor 7, one end of the chain 8, which is far away from the motor 7, is movably connected with a transmission device 9, the transmission device 9 consists of a chain wheel and a circular shaft, the front surface of the circular shaft is fixedly connected with the chain wheel, one end of the circular shaft, which is far away from the chain wheel, penetrates through and extends into the sleeve block 10, the outer side of the transmission device 9 is movably connected with the sleeve block 10, the sleeve block 10 comprises a circular block 1001, the inside of the circular block 1001 is provided with a circular groove 1002, the top of the circular groove 1002 is fixedly connected with a movable groove 1003 arranged on the circular block 1001, the bottom of the sleeve block 10 is fixedly connected with a lamp post 2, the top of the transmission device 9 is fixedly connected with a connecting rod 11, the bottom of the connecting rod 11 penetrates through the sleeve block 10 and the transmission device 9 and extends into the transmission device 9, the top of the connecting rod 11 is fixedly connected with a placing frame 12, the inside of the placing frame 12 is provided with a placing, the top of the placing rack 12 is fixedly connected with a light gathering block 13, the light gathering block 13 is a chromium light gathering block which is hollow inside and has the top and the bottom missing, the size of a protective transparent plate 15 is equal to that of a Fresnel lens 14, the top of the light gathering block 13 is fixedly connected with the Fresnel lens 14, the Fresnel lens 14 is a sheet formed by polyolefin material injection molding, one surface of the lens is a smooth surface, the other surface of the lens is a concentric circle from small to large, the Fresnel lens 14 has a focusing function, the top of the Fresnel lens 14 is fixedly connected with the protective transparent plate 15, through the use of the protective transparent plate 15, the Fresnel lens 14 and an internal solar cell panel 16 are prevented from being corroded by rainwater and damaged, the service life of the device is prolonged, through the use of the chain 8, the chain 8 can keep accurate average transmission ratio when rotating, the transmission efficiency is higher, the overload capacity is strong, and the device can work well under, thereby the movement of the placing rack 12 is more stable, the purpose of high practicability is realized, the solar cell panel 16 is fixedly connected in the placing rack 12, the wormhole-shaped suede 17 is fixedly connected at the top of the solar cell panel 16, the wormhole-shaped suede 17 is used, the incidence of the light of the solar cell panel 16 is increased by the unique structure of the wormhole-shaped suede 17, the reflection is reduced, the irradiation of the light is increased by the light gathering block 13 through the matching use of the light gathering block 13 and the Fresnel lens 14, the irradiation degree of the light is increased by the light gathering block 13, the texture in the Fresnel lens 14 has the focusing function, thereby the utilization rate of the solar energy is improved, the output shaft of the motor 7 drives the chain 8 to rotate through the use of the motor 7, the transmission device 9 is driven to rotate in the sleeve block 10 through the rotation of the chain 8, thereby the angle of the, the purpose of high power generation efficiency is achieved.
When using, the unique structure of wormhole form matte 17 increases the incidence of 16 light of solar cell panel, reduces the reflection, spotlight piece 13 has increased the irradiance of light, the inside texture of fresnel lens 14 has the focus function, thereby the utilization ratio of solar energy has been improved, the output shaft of motor 7 drives chain 8 and rotates, the rotation of chain 8 drives transmission 9 and rotates in the inside of cover piece 10, thereby change the angle of rack 12, adapt to the irradiant angle of different time quantum, and then improve the utilization ratio of solar energy.
In conclusion, this novel solar street lamp that generating efficiency is high, use through wormhole form matte 17, wormhole form matte 17's unique structure, increase the incidence of 16 lights of solar cell panel, reduce the reflection, use through the cooperation of spotlight piece 13 and fresnel lens 14, spotlight piece 13 has increased the irradiance of light, fresnel lens 14 inside texture has the focus function, thereby the utilization ratio of solar energy has been improved, use through motor 7, motor 7's output shaft drives chain 8 and rotates, chain 8's rotation drives transmission 9 and rotates in the inside of cover block 10, thereby change rack 12's angle, adapt to the irradiant angle of different time quantum, and then improve the utilization ratio of solar energy, the purpose that generating efficiency is high has been realized.
And, through the use of the protective transparent plate 15, avoid fresnel lens 14 and inside solar cell panel 16 to be corroded by the rainwater, produce the harm, the life of this device has been prolonged, through the use of chain 8, chain 8 can keep accurate average drive ratio when rotating, transmission efficiency is higher, overload capacity is strong, can be better work under the low-speed heavy load, thereby make the removal of rack 12 more stable, the purpose that the practicality is high has been realized, the shortcoming that current solar street lamp has solar cell panel 16 generating efficiency low in the in-process of using has been solved, the electric energy that leads to the storage is few, make solar street lamp illumination days in the rainy season shorter, the problem of operating time has been reduced.
It is to be noted that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. The utility model provides a novel solar street lamp that generating efficiency is high, includes base (1), its characterized in that: the lamp post is fixedly connected to the top of the base (1), the fixing rod (3) is fixedly connected to the left side of the lamp post (2), the reinforcing plate (4) is fixedly connected to the left side of the lamp post (2) and is located at the top of the fixing rod (3), the LED lamp (5) is fixedly connected to the left side of the fixing rod (3), the electricity storage box (6) is fixedly connected to the left side of the lamp post (2) and is located at the top of the reinforcing plate (4), the motor (7) is fixedly connected to the front side of the lamp post (2), the chain (8) is movably connected to an output shaft of the motor (7), the transmission device (9) is movably connected to one end, away from the motor (7), of the chain (8), the sleeve block (10) is movably connected to the outer side of the transmission device (9), the lamp post (2) is fixedly connected to the bottom of the sleeve block (10), the connecting rod (11) is fixedly connected to, the top fixedly connected with rack (12) of connecting rod (11), the top fixedly connected with of rack (12) gathers light piece (13), the top fixedly connected with fresnel lens (14) of gathering light piece (13), the top fixedly connected with protection transparent plate (15) of fresnel lens (14), the inside fixedly connected with solar cell panel (16) of rack (12), the top fixedly connected with worm hole form matte (17) of solar cell panel (16).
2. The novel solar street lamp with high power generation efficiency as claimed in claim 1, is characterized in that: the sleeve block (10) comprises a round block (1001), a round groove (1002) is formed in the round block (1001), and a movable groove (1003) formed in the round block (1001) is fixedly connected to the top of the round groove (1002).
3. The novel solar street lamp with high power generation efficiency as claimed in claim 1, is characterized in that: the transmission device (9) is composed of a chain wheel and a round shaft, the chain wheel is fixedly connected to the front face of the round shaft, and one end, far away from the chain wheel, of the round shaft penetrates through and extends to the inside of the sleeve block (10).
4. The novel solar street lamp with high power generation efficiency as claimed in claim 1, is characterized in that: the bottom of the connecting rod (11) penetrates through the sleeve block (10) and the transmission device (9) and extends into the transmission device (9).
5. The novel solar street lamp with high power generation efficiency as claimed in claim 1, is characterized in that: a placing groove is formed in the placing rack (12), and the size of the placing groove is equal to the sum of the volumes of the solar cell panel (16) and the wormhole-shaped suede (17).
6. The novel solar street lamp with high power generation efficiency as claimed in claim 1, is characterized in that: the light gathering block (13) is a chromium light gathering block which is hollow inside and is absent at the top and the bottom, and the size of the protective transparent plate (15) is equal to that of the Fresnel lens (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625333.6A CN112212269A (en) | 2019-07-11 | 2019-07-11 | Novel solar street lamp that generating efficiency is high |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910625333.6A CN112212269A (en) | 2019-07-11 | 2019-07-11 | Novel solar street lamp that generating efficiency is high |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112212269A true CN112212269A (en) | 2021-01-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910625333.6A Pending CN112212269A (en) | 2019-07-11 | 2019-07-11 | Novel solar street lamp that generating efficiency is high |
Country Status (1)
| Country | Link |
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| CN (1) | CN112212269A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869844A (en) * | 2024-01-23 | 2024-04-12 | 广东标昇光能科技有限公司 | Automatic solar street lamp follows spot |
-
2019
- 2019-07-11 CN CN201910625333.6A patent/CN112212269A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117869844A (en) * | 2024-01-23 | 2024-04-12 | 广东标昇光能科技有限公司 | Automatic solar street lamp follows spot |
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Application publication date: 20210112 |