CN112309278B - Automatic clear solar energy LED advertising light board device - Google Patents
Automatic clear solar energy LED advertising light board device Download PDFInfo
- Publication number
- CN112309278B CN112309278B CN202011397492.4A CN202011397492A CN112309278B CN 112309278 B CN112309278 B CN 112309278B CN 202011397492 A CN202011397492 A CN 202011397492A CN 112309278 B CN112309278 B CN 112309278B
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- Prior art keywords
- display board
- sweeping
- water bag
- rod
- screw rod
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000010408 sweeping Methods 0.000 claims abstract description 51
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 31
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 31
- 239000010703 silicon Substances 0.000 claims abstract description 31
- 239000013078 crystal Substances 0.000 claims abstract description 17
- 238000003825 pressing Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 229910021419 crystalline silicon Inorganic materials 0.000 claims description 9
- 229920000742 Cotton Polymers 0.000 claims description 8
- 238000004804 winding Methods 0.000 claims description 6
- 239000004677 Nylon Substances 0.000 claims description 5
- 229920001778 nylon Polymers 0.000 claims description 5
- 239000006260 foam Substances 0.000 claims description 4
- 238000004140 cleaning Methods 0.000 abstract description 14
- 239000000428 dust Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 235000012431 wafers Nutrition 0.000 description 5
- 238000009434 installation Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000003670 easy-to-clean Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000002791 soaking Methods 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F13/00—Illuminated signs; Luminous advertising
- G09F13/04—Signs, boards or panels, illuminated from behind the insignia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F15/00—Boards, hoardings, pillars, or like structures for notices, placards, posters, or the like
- G09F15/02—Bills, posters, or the like therefor
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to an automatic cleaning solar LED advertising lamp board device, which comprises a display board and a water bag mechanism, wherein a crystal silicon board is arranged at the top of the display board, a motor is arranged at the top of the right side of the display board, a bearing seat is arranged at the bottom of the right side of the display board, a screw rod is arranged between the bearing seat and the motor, a sweeping rod is arranged at the front side of the display board, the right end of the sweeping rod is matched with the screw rod, the sweeping rod is driven to slide up and down when the screw rod rotates, so that the sweeping rod finishes wiping action on the front surface of the display board from top to bottom, a rear cabin is arranged at the rear side of the display board, the water bag mechanism comprises a water bag arranged in the rear cabin, a pressing plate positioned at the top end of the water bag, a power source when the crystal silicon board is cleaned, a power source when the sweeping rod cleans the display board, and a power source when the water bag mechanism compresses water, the power sources are all from the same screw rod, namely from the same motor, so that the three functions are finished by the same driving power mechanism, therefore, the structure design is ingenious, and the electric energy is saved.
Description
Technical Field
The invention relates to the technical field of advertising boards, in particular to an automatic cleaning solar LED advertising lamp board device.
Background
Shop head, company's signboard, LED lamp bill-board can all be used in advertising, be equipped with the LED lamp in the bill-board, power supply module, control system, the poster of making to paste up on the show tablet can show and propaganda at night, LED lamp in the show tablet is still made and is lighted the form of dodging a bit, be used for improving the bandwagon effect, some show tablets are when using, often still at top installation solar panel, be used for saving the power, and this technique has been used widely, for example the interim warning show tablet of handing over police usefulness etc..
The existing solar display board can leave a large amount of dust on the display surface after being used for a period of time, is not easy to clean, and similarly can leave a large amount of dust (a solar panel, for convenience of description, hereinafter collectively referred to as a crystalline silicon panel) on a top crystalline silicon panel, such as a large-screen display board for a market and the like, so that the size is large, the hanging position is high, and the display board is not easy to manually clean.
Disclosure of Invention
In order to solve the problems, the invention provides an automatic cleaning solar LED advertising lamp board device.
In order to solve the above problems, the present invention provides the following technical solutions:
the utility model provides an automatic clear solar energy LED advertising light board device, includes show tablet and water pocket mechanism, the top of show tablet is equipped with the brilliant silicon board, and the right side top is equipped with the motor, and the right side bottom is equipped with the bearing frame, installs the screw rod between bearing frame and the motor, the pole is swept in the show tablet front side installation, and sweeps pole right-hand member cooperation on the screw rod, and the pole is swept to sliding from top to bottom in the area when the screw rod is rotatory to the messenger sweeps the pole and accomplish the wiping action from top to bottom on the front surface of show tablet.
The display board is characterized in that a rear cabin is arranged on the rear side of the display board, the water bag mechanism comprises a water bag arranged in the rear cabin, a pressing plate located at the top end of the water bag and a sliding block arranged on the outer wall surface of the pressing plate, a sliding groove is formed in the right side of the rear cabin, the sliding block is located in the sliding groove and matched with a screw, and the screw drives the pressing plate to press down when rotating so as to compress the water bag.
The antetheca face of brilliant silicon board is equipped with the guide rail, installs through the guide rail on the brilliant silicon board and sweeps the seat, sweeps the seat right side and is equipped with wire rope, brilliant silicon board front side welded has the hang plate, and the welding of hang plate right side has the pipe, and wire rope wears the dress in the pipe, the gear is installed to the right side bottom of show tablet, and the gear inboard is equipped with around the wheel, and wire rope connects around taking turns for when the gear is rotatory, take wire rope to spur downwards around the wheel, so that sweep the seat and accomplish the action of wiping from the left hand right hand side on the brilliant silicon board.
Preferably, the following steps: and a rack is also arranged on the sliding block, and the rack corresponds to the gear up and down.
Preferably, the method comprises the following steps: the distance between the gear and the rack is consistent with the length distance of the crystal silicon plate.
Preferably, the method comprises the following steps: and limiting plates for shielding the water bag in the rear cabin are arranged on two sides of the rear wall of the display board.
Preferably, the method comprises the following steps: sweep and be equipped with the water pipe on the pole, the water pipe bottom is connected on the water pocket, sweep the pole bottom surface and be equipped with and sweep the cotton board, sweep the laminating of cotton board on the front side surface of display card.
Preferably, the method comprises the following steps: the rear cabin is internally provided with a remote control module for remotely controlling the motor to work in a power-on mode, an electrical component for converting the crystalline silicon plate into electrical energy is installed, an LED lamp electrically connected with the electrical component is also installed, and the motor is electrically connected with the electrical component.
Preferably, the method comprises the following steps: the bottom surface of the crystal silicon plate is elastically connected with the sweeping seat through a nylon spring.
Preferably, the following steps: sweep the bottom surface of seat and still be equipped with one row of spring holder, the spring holder bottom surface is connected with the bubble cotton jointly.
Compared with the prior art, the invention has the following beneficial effects:
1. be equipped with in the display card leading flank and sweep the pole, install the screw rod through the motor on the display card right side, sweep the pole with this and connect on the screw rod, sweep the pole when the motor circular telegram and reciprocate, can clean the dust that the surface formed before the display card and handle, when actual equipment, can add in the display card backseat and establish remote control module for with ground remote controller remote connection, make this sweep the pole and reach remote control, and reach the purpose of cleaning the clearance to the surface before the display card.
2. Still set up on the current brilliant silicon board in top and sweep the seat, it is the same with the pole function to sweep, sweep the seat and remove the dust that forms when moving still with the brilliant silicon board and clean up, consequently can see out, this show tablet not only has the purpose that makes its show face reach the clearance, but also can make the brilliant silicon board at top reach the purpose of clearance, and after the brilliant silicon board dust was cleared up, the better receipt solar energy that can improve electric energy conversion.
3. The display board cleaning mechanism is characterized in that a water bag mechanism is arranged in the display board rear cabin and is matched with the screw rod, when the screw rod rotates, the sweeping rod can be driven to wipe the front surface of the display board, the water bag mechanism can be driven to compress and spray water outwards, water pipes for water conservancy are filled on the sweeping rod, when the sweeping rod is used for cleaning the surface of the display board, the purpose of synchronous sprinkling type cleaning is achieved, and the functionality is improved.
4. The rack is also arranged on the sliding block of the water bag mechanism connected with the screw, when the water bag mechanism is compressed, the rack moves downwards and is meshed with the gear installed on the side wall of the display board, and the sweeping seat for sweeping the crystal silicon board is connected to the gear through the thin steel wire rope, so when the rack moves downwards along with the sliding block and is meshed with the gear, the steel wire rope is forced to control the sweeping seat to sweep the crystal silicon board, therefore, the power source of the crystal silicon board is swept and processed, the power source of the sweeping rod when sweeping the display board, and the power source of the water bag mechanism when the water bag mechanism is compressed to discharge water are all from the same screw, namely from the same motor, therefore, the implementation of three functions is driven and completed by one power mechanism, the structural design is ingenious, and the electric energy is saved.
Drawings
FIG. 1 is a schematic structural view of the rear side view angle water bag mechanism of the present invention removed rearwardly;
FIG. 2 is an enlarged view of part A of FIG. 1;
FIG. 3 is an enlarged view of the portion B of FIG. 1;
FIG. 4 is a schematic view of the assembled front side view of the present invention;
FIG. 5 is an enlarged view of the portion C of the present invention, which is drawn from FIG. 4;
FIG. 6 is a schematic view of the present invention taken from the rotational perspective of FIG. 4;
FIG. 7 is an enlarged view of the portion D of the present invention, which is drawn from FIG. 6;
FIG. 8 is a schematic view of the assembled structure of the present invention viewed from a rear perspective;
FIG. 9 is a partial top side view of the assembled embodiment of the present invention;
FIG. 10 is a schematic view of the sweeping base of the present invention after being moved upward;
FIG. 11 is a schematic view of the sweeping base of the present invention with its interior broken away;
FIG. 12 is a front side view of the present invention in angular rotation;
fig. 13 and 14 are two schematic views of the disassembled parts of the present invention.
Description of the main reference numerals:
1. a display board; 101. a chute; 102. a rear compartment; 2. a crystalline silicon plate; 201. a nylon spring; 202. a conduit; 3. a motor; 4. a screw; 5. a bearing seat; 6. a water bag mechanism; 601. a water bladder; 60101. a rack; 602. pressing a plate; 603. a slider; 7. a gear; 8. sweeping the rod; 801. a water pipe; 9. sweeping the base; 901. a wire rope; 902. a spring seat; 903. soaking cotton; 10. and a limiting plate.
Detailed Description
The technical solutions of the present invention will be described in detail and fully with reference to the accompanying drawings, and it should be understood that the described embodiments are only some embodiments, but not all embodiments, of the present invention. 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.
In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are orientations or positional relationships indicated on the basis of the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the devices or elements referred to must have specific orientations, be constructed and operated in specific orientations, and thus, should not be construed as limiting the invention.
In the description of the present invention, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" should be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be specifically understood by those skilled in the art.
Referring to the attached figures 1-14, an automatic cleaning solar LED advertising light board device comprises a display board 1 and a water bag mechanism 6, wherein a silicon crystal plate 2 is arranged at the top of the display board 1, a motor 3 is arranged at the top of the right side, a bearing seat 5 is arranged at the bottom of the right side, a screw rod 4 is arranged between the bearing seat 5 and the motor 3, a sweeping rod 8 is arranged at the front side of the display board 1, the right end of the sweeping rod 8 is matched with the screw rod 4, the sweeping rod 8 is driven to slide up and down when the screw rod 4 rotates, so that the sweeping rod 8 finishes wiping action on the front surface of the display board 1 from top to bottom, a rear cabin 102 is arranged at the rear side of the display board 1, a remote control module for remotely controlling the motor 3 to work in a power-on mode and an electrical component for converting the silicon crystal plate 2 into electric energy are arranged in the rear cabin 102, an LED lamp electrically connected with the electrical component is also arranged, the motor 3 is electrically connected with the electrical component, therefore in actual installation, the ground remote controller provided with the prior art controls the motor 3 to rotate, so that the front surface of the display board 1 achieves the purpose of regular cleaning, the electrical technology is the prior art, the design is not described in addition, and the arranged sweeping rod 8 improves the functionality and realizes remote cleaning.
As shown in fig. 1 and 3, a water bag mechanism 6 is provided, and the functionality of the water bag mechanism 6 is improved by specifically describing: the water bag mechanism 6 comprises a water bag 601 arranged in the rear cabin 102, a pressing plate 602 positioned at the top end of the water bag 601, and a sliding block 603 arranged on the outer wall surface of the pressing plate 602, the right side of the rear cabin 102 is provided with a sliding groove 101, the sliding block 603 is positioned in the sliding groove 101 and is matched with the screw rod 4, the screw rod 4 drives the pressing plate 602 to press down when rotating, so that the water bag 601 is compressed, the sweeping rod 8 is also provided with a water pipe 801, the bottom end of the water pipe 801 is connected with the water bag 601, the bottom surface of the sweeping rod 8 is provided with a cotton sweeping plate, the cotton sweeping plate is attached to the front side surface of the display board 1, when the water bag 601 is pressed, the clean water inside is sprayed onto the front side surface of the display board 1 through the water pipe 801, so that the front surface of the display board 1 can be sprinkled, when the sweeping rod 8 moves up and down to clean the front surface of the display board 1, the cleaning mode achieves the purpose of sweeping and sprinkling water simultaneously, the cleaning effect is better, as shown in figure 8, both sides of the rear wall of the display board 1 are provided with a limiting plate 10 which shields the water bag 601 in the rear cabin 102, when the water bag 601 is compressed, the direction is limited by the limiting plates 10, and the two limiting plates 10 can prevent the water bag 601 from bulging backwards when being compressed.
As shown in fig. 4 and 5, a guide rail is arranged on the front wall of the crystalline silicon board 2, a sweeping seat 9 is mounted on the crystalline silicon board 2 through the guide rail, a steel wire rope 901 is arranged on the right side of the sweeping seat 9, an inclined plate is welded on the front side of the crystalline silicon board 2, a guide pipe 202 is welded on the right side of the inclined plate, the steel wire rope 901 penetrates through the guide pipe 202, a gear 7 is mounted at the bottom of the right side of the display board 1, a winding wheel is arranged on the inner side of the gear 7, and the steel wire rope 901 is connected to the winding wheel, so that when the gear 7 rotates, the winding wheel drives the steel wire rope 901 to pull downwards, and the sweeping seat 9 finishes wiping actions on the crystalline silicon board 2 from left to right.
As shown in fig. 1, 3, 6 and 7, a rack 60101 is further disposed on the slide block 603, the rack 60101 corresponds to the gear 7 up and down, the distance between the gear 7 and the rack 60101 is the same as the length distance of the silicon wafer 2, so that when the screw 4 rotates, not only the slide block 603 is driven to move the pressing plate 602 up and down to complete the extrusion of the water bladder 601, but also the rack 60101 is driven to move up and down, when the rack 60101 moves down and is engaged with the gear 7, the gear 7 rotates, and when the gear 7 rotates, the sweep base 9 is pulled by the thin steel wire 901 to complete the cleaning of the silicon wafer 2, and as shown in fig. 9 and 12, since the bottom surface of the silicon wafer 2 is elastically connected to the sweep base 9 through a nylon spring 201, when the motor 3 drives the screw 4 to rotate in the reverse direction, the slide block 603 is driven to lift the rack 60101, and the gear 7 rotates in the reverse direction, and is influenced by the nylon spring 201, and the thin steel wire rope 901 wound on the gear 7 is discharged outwards, and finally the sweeping seat 9 is reset leftwards, so that the purpose of sweeping the upper surface of the crystal silicon plate 2 in the opposite direction is achieved. Of course, when the screw rod 4 rotates reversely, the sweeping rod 8 is reset upwards, and the purpose of cleaning the front surface of the display board 1 in the reverse direction is achieved.
As shown in fig. 10 and 11, since the bottom surface of the sweeping base 9 is further provided with a row of spring seats 902, and the bottom surfaces of the spring seats 902 are commonly connected with the foam 903, when the sweeping base 9 sweeps the top area of the silicon wafer 2 from left to right or from right to left, when the foam 903 with elasticity reaches the gap between the two adjacent silicon wafers 2 along with the sweeping base 9, the foam 903 is pressed down to clean the dust in the gap, so that the sweeping base 9 has a more reasonable structural design.
The foregoing descriptions of specific exemplary embodiments of the present invention have been presented for purposes of illustration and description. It is not intended to limit the invention to the precise form disclosed, and obviously many modifications and variations are possible in light of the above teaching. The exemplary embodiments were chosen and described in order to explain certain principles of the invention and its practical application to enable one skilled in the art to make and use various exemplary embodiments of the invention and various alternatives and modifications as are suited to the particular use contemplated. It is intended that the scope of the invention be defined by the claims and their equivalents.
Claims (1)
1. The utility model provides an automatic clear solar energy LED advertising light board device, includes show tablet (1) and water pocket mechanism (6), its characterized in that: the display board is characterized in that a crystal silicon plate (2) is arranged at the top of the display board (1), a motor (3) is arranged at the top of the right side of the display board, a bearing seat (5) is arranged at the bottom of the right side of the display board, a screw rod (4) is arranged between the bearing seat (5) and the motor (3), a sweeping rod (8) is arranged on the front side of the display board (1), the right end of the sweeping rod (8) is matched with the screw rod (4), and the sweeping rod (8) is driven to slide up and down when the screw rod (4) rotates, so that the sweeping rod (8) finishes wiping action on the front surface of the display board (1) from top to bottom;
the display board is characterized in that a rear cabin (102) is arranged on the rear side of the display board (1), the water bag mechanism (6) comprises a water bag (601) arranged in the rear cabin (102), a pressing plate (602) located at the top end of the water bag (601), and a sliding block (603) arranged on the outer wall surface of the pressing plate (602), a sliding groove (101) is formed in the right side of the rear cabin (102), the sliding block (603) is located in the sliding groove (101) and is matched with a screw rod (4), and the screw rod (4) drives the pressing plate (602) to press downwards when rotating so as to compress the water bag (601);
the front wall of the crystal silicon plate (2) is provided with a guide rail, a sweeping seat (9) is installed on the crystal silicon plate (2) through the guide rail, a steel wire rope (901) is arranged on the right side of the sweeping seat (9), an inclined plate is welded on the front side of the crystal silicon plate (2), a guide pipe (202) is welded on the right side of the inclined plate, the steel wire rope (901) penetrates through the guide pipe (202), a gear (7) is installed at the bottom of the right side of the display board (1), a winding wheel is arranged on the inner side of the gear (7), and the steel wire rope (901) is connected to the winding wheel, so that when the gear (7) rotates, the winding wheel drives the steel wire rope (901) to pull downwards, and the sweeping seat (9) finishes wiping action on the crystal silicon plate (2) from left to right;
a rack (60101) is further arranged on the sliding block (603), and the rack (60101) corresponds to the gear (7) up and down;
the distance between the gear (7) and the rack (60101) is consistent with the length distance of the crystal silicon plate (2);
limiting plates (10) enabling the water bag (601) to shield the rear cabin (102) are arranged on two sides of the rear wall of the display board (1);
a water pipe (801) is arranged on the sweeping rod (8), the bottom end of the water pipe (801) is connected to the water bag (601), a cotton sweeping plate is arranged on the bottom surface of the sweeping rod (8), and the cotton sweeping plate is attached to the front side surface of the display board (1);
a remote control module for remotely controlling the motor (3) to work in an electrified mode and an electrical component for converting the crystalline silicon plate (2) into electric energy are arranged in the rear cabin (102), an LED lamp electrically connected with the electrical component is also arranged, and the motor (3) is electrically connected with the electrical component;
the bottom surface of the crystal silicon plate (2) is elastically connected with the sweeping seat (9) through a nylon spring (201);
sweep the bottom surface of seat (9) and still be equipped with one row of spring holder (902), spring holder (902) bottom surface is connected with foam (903) jointly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397492.4A CN112309278B (en) | 2020-12-04 | 2020-12-04 | Automatic clear solar energy LED advertising light board device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011397492.4A CN112309278B (en) | 2020-12-04 | 2020-12-04 | Automatic clear solar energy LED advertising light board device |
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| Publication Number | Publication Date |
|---|---|
| CN112309278A CN112309278A (en) | 2021-02-02 |
| CN112309278B true CN112309278B (en) | 2022-07-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011397492.4A Active CN112309278B (en) | 2020-12-04 | 2020-12-04 | Automatic clear solar energy LED advertising light board device |
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| CN (1) | CN112309278B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113838366B (en) * | 2021-09-26 | 2023-01-20 | 秦皇岛职业技术学院 | Tourist attraction of environmental protection is with tourism sign |
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| CN111883028A (en) * | 2020-08-17 | 2020-11-03 | 嵊州略白广告有限公司 | Self-cleaning billboard with electric shock prevention and auxiliary drainage functions |
| CN111992556B (en) * | 2020-08-25 | 2021-08-17 | 吉林澳奇机电集团有限公司 | Automatic cleaning device for electric automobile charging pile by utilizing rainwater |
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