CN111369912A - Rotating highway advertising board utilizing wind energy based on chute movement - Google Patents
Rotating highway advertising board utilizing wind energy based on chute movement Download PDFInfo
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- CN111369912A CN111369912A CN202010272918.7A CN202010272918A CN111369912A CN 111369912 A CN111369912 A CN 111369912A CN 202010272918 A CN202010272918 A CN 202010272918A CN 111369912 A CN111369912 A CN 111369912A
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- movably connected
- rotating
- wind energy
- block
- rotary
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F11/00—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position
- G09F11/02—Indicating arrangements for variable information in which the complete information is permanently attached to a movable support which brings it to the display position the display elements being secured to rotating members, e.g. drums, spindles
- G09F11/10—Electrical control therefor
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/20—Wind motors characterised by the driven apparatus
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D9/00—Adaptations of wind motors for special use; Combinations of wind motors with apparatus driven thereby; Wind motors specially adapted for installation in particular locations
- F03D9/30—Wind motors specially adapted for installation in particular locations
- F03D9/34—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures
- F03D9/43—Wind motors specially adapted for installation in particular locations on stationary objects or on stationary man-made structures using infrastructure primarily used for other purposes, e.g. masts for overhead railway power lines
- F03D9/46—Tunnels or streets
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- 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
- Y02B10/00—Integration of renewable energy sources in buildings
- Y02B10/30—Wind power
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- 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
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- 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
- Y02E10/70—Wind energy
- Y02E10/728—Onshore wind turbines
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The invention relates to the related technical field of environmental protection, and discloses a rotary highway billboard utilizing wind energy based on chute movement. This rotation highway bill-board based on spout motion utilizes wind energy through the connection of wind wheel, dog, has solved the high problem of energy consumption, has improved the higher problem of power supply system cost, reduces the power consumption, resources are saved, through the connection of first axis of rotation, show tablet, the cost is practiced thrift, has solved the problem that is difficult to realize power supply upset bill-board, great improvement very power consumptive and cost such as the use is higher, practice thrift the cost, save the resource.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a rotary highway billboard utilizing wind energy based on chute movement.
Background
With the rapid economic development of China, the sustainable development of energy and the environmental protection problem of China are closely concerned, common traditional billboards and outdoor billboards in China are mostly placed on two sides of a road, and the content of the signboard is displayed to pedestrians, passengers or drivers, so that the effect of transmitting advertising information is achieved, and the traditional billboards adopt electric energy to supply power to enable the billboards to rotate, so that the content on the billboards is changed.
The outdoor billboard on the market is various in types, common traditional billboards and outdoor billboards can be arranged beside a highway, but in places where electric energy cannot reach easily, the cost of a power supply system is high, the purpose of turning the billboard by supplying power is not easy to realize, the defects of high power consumption, high use cost and the like exist, and the billboard can be automatically turned by utilizing wind energy, so that the purposes of reducing power consumption and cost are achieved.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a rotary highway billboard utilizing wind energy based on chute movement, which has the advantages of low energy consumption and low cost and solves the problems of high energy consumption and high cost.
(II) technical scheme
In order to achieve the purpose, the invention provides the following technical scheme: a rotary highway advertising board utilizing wind energy based on chute movement comprises a wind wheel, wherein one end of the wind wheel is movably connected with a fixed frame, the inside of the fixed frame is movably connected with an input shaft, the outer side of the input shaft is movably connected with a rotary disc, the front surface of the rotary disc is provided with a stop block, two sides of the rotary disc are provided with rotary grooves, the outer side of the stop block is movably connected with a stop shaft, the bottom of the stop shaft is movably connected with a rotary sheet, one end of the rotary sheet is movably connected with a stop block, the inside of the rotary sheet is movably connected with a first rotary shaft, the outer side of the first rotary shaft is movably connected with a rotary disc, the front surface of the rotary disc is provided with a first chute, the bottom of the rotary disc is movably connected with a rotary sliding column, the bottom of the rotary disc is movably connected with a moving strip, the inside of the first chute is movably connected with a, one end swing joint that the head rod was kept away from to the second connecting rod has the go-between, the inboard swing joint of go-between has the output shaft, the outside of output shaft is provided with the sliding block, the outside swing joint of output shaft has the locating piece, the inside of locating piece is provided with the slide, the bottom swing joint of locating piece has the swivel mount, the circular slot has been seted up on the both sides of swivel mount, the bottom swing joint of swivel mount has the turning block, the second spout has been seted up on the surface of turning block, the top swing joint of output shaft has.
Preferably, the number of the wind wheels is not less than two, and the wind wheels are symmetrically distributed about the axis of the input shaft.
Preferably, the block setting is no less than two, about the axis symmetry distribution of carousel.
Preferably, the rotating grooves are not less than two and are symmetrically distributed about the axis of the rotating disc.
Preferably, the stop blocks are arranged at least two and are symmetrically distributed about the axis of the rotating piece.
Preferably, first spout is calabash form spout, and it is no less than two to rotate the traveller setting, with second spout swing joint.
Preferably, the motion strip is movably connected with the circular groove.
Three beneficial effects
Compared with the prior art, the invention provides a rotary highway billboard utilizing wind energy based on chute movement, which has the following beneficial effects:
1. this rotation highway bill-board based on spout motion utilizes wind energy, through the wind wheel, the mount, the input shaft, block the axle, the rotor plate, the connection of dog, utilize wind energy to rotate the bill-board, make the automatic upset of bill-board, to a great extent has solved the problem that the energy consumption is high, common traditional bill-board has been improved, what outdoor bill-board had can establish by the highway but in the place that the electric energy is difficult to reach, the higher problem of power supply system cost reduces the power consumption, resources are saved.
2. This rotation highway bill-board based on spout motion utilizes wind energy through the connection of first axis of rotation, rolling disc, output shaft, rotation platform, show tablet, practices thrift the cost, has solved the problem that is difficult to realize power supply upset bill-board, great improvement very power consumptive and cost such as higher of use shortcoming, practice thrift the cost, save the resource.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of a wind wheel according to the present invention;
FIG. 3 is a schematic view of a rotor plate according to the present invention;
FIG. 4 is a schematic view of the chute structure of the present invention;
FIG. 5 is a schematic view of the circular groove structure of the present invention.
In the figure: 1. a wind wheel; 2. a fixed mount; 3. an input shaft; 4. a turntable; 5. blocking; 6. a rotating groove; 7. a blocking shaft; 8. a rotating sheet; 9. a stopper; 10. a first rotating shaft; 101. rotating the disc; 11. a first chute; 12. a traveler; 13. a motion bar; 14. a slider; 15. a first connecting rod; 16. a second connecting rod; 17. a connecting ring; 18. an output shaft; 19. a slider; 20. positioning blocks; 21. a slideway; 22. a rotating table; 23. a circular groove; 24. rotating the block; 25. a second chute; 26. a display board.
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. 1-5, a rotary highway billboard utilizing wind energy based on chute movement comprises a wind wheel 1, one end of the wind wheel 1 is movably connected with a fixed frame 2, the wind wheel 1 is fixed, the inner part of the fixed frame 2 is movably connected with an input shaft 3, the shaft is driven to move, the wind wheel 1 is provided with at least two blocks, the input shaft 3 rotates, the blocks are symmetrically distributed about the axis of the input shaft 3, the outer side of the input shaft 3 is movably connected with a turntable 4, the front surface of the turntable 4 is provided with a block 5, the block 5 is provided with at least two blocks, the block 5 is symmetrically distributed about the axis of the turntable 4, the block 7 rotates, two sides of the turntable 4 are provided with at least two rotary grooves 6, the rotary grooves 6 are symmetrically distributed about the axis of the turntable 4, the block 9 rotates, the outer side of the block 5 is movably connected with a block shaft 7, the, one end of the rotating sheet 8 is movably connected with a stop block 9, and the stop blocks 9 are arranged at least two and are symmetrically distributed about the axis of the rotating sheet 8, so that the first rotating shaft 10 rotates.
A first rotating shaft 10 is movably connected inside the rotating sheet 8, a rotating disc 101 is movably connected outside the first rotating shaft 10, a first sliding groove 11 is formed in the front surface of the rotating disc 101 and cannot block the rotating disc 101 from moving, a rotating sliding column 12 is movably connected at the bottom of the rotating disc 101, a moving strip 13 is movably connected at the bottom of the rotating disc 101, a sliding block 14 is movably connected inside the first sliding groove 11, the sliding block 14 moves to turn over and move the advertising board, a first connecting rod 15 is movably connected outside the sliding block 14, a second connecting rod 16 is movably connected at one end of the first connecting rod 15 far away from the sliding block 14, a connecting ring 17 is movably connected at one end of the second connecting rod 16 far away from the first connecting rod 15, an output shaft 18 is movably connected inside the connecting ring 17, a sliding block 19 is arranged outside the output shaft 18, a positioning block 20 is movably connected outside the output shaft 18, the bottom swing joint of locating piece 20 has swivel mount 22, and circular slot 23 has been seted up on swivel mount 22's both sides, and motion strip 13 and circular slot 23 swing joint rotate the bottom swing joint of mount 22 has turning block 24, and second spout 25 has been seted up on the surface of turning block 24, and rotation traveller 12 sets up and is no less than two, with second spout 25 swing joint, the top swing joint of output shaft 18 has display card 26, the show advertisement.
The working principle is that the rotary highway advertising board utilizing wind energy based on chute movement comprises a wind wheel 1, wherein the wind wheel 1 is blown by wind to rotate clockwise, the wind wheel 1 is connected with a fixed frame 2 to enable the fixed frame 2 to rotate anticlockwise, the fixed frame 2 is connected with an input shaft 3 to enable the input shaft 3 to rotate anticlockwise, the wind wheel 1 is provided with at least two blocks which are symmetrically distributed about the axis of the input shaft 3, the input shaft 3 is connected with a rotary disc 4 to enable the rotary disc 4 to rotate anticlockwise, the front surface of the rotary disc 4 is provided with a stop block 5, the stop blocks 5 are provided with at least two blocks which are symmetrically distributed about the axis of the rotary disc 4 to enable the stop block 5 to rotate anticlockwise, two sides of the rotary disc 4 are provided with at least two rotary grooves 6, the rotary grooves 6 are symmetrically distributed about the axis of the rotary disc 4 to enable the rotary grooves 6 to rotate anticlockwise, the bottom of the blocking shaft 7 is connected with a rotating sheet 8, the rotating sheet 8 is connected with a stop block 9, so that the rotating sheet 8 moves clockwise, the number of the stop blocks 9 is at least two, the stop blocks are symmetrically distributed about the axis of the rotating sheet 8, the rotating sheet 8 is connected with a first rotating shaft 10, so that the first rotating shaft 10 moves clockwise, the first rotating shaft 10 is connected with a rotating disc 101, so that the rotating disc 101 moves clockwise, a first sliding groove 11 is formed in the front surface of the rotating disc 101, the bottom of the rotating disc 101 is connected with a rotating sliding column 12, the bottom of the rotating disc 101 is connected with a moving strip 13, the first sliding groove 11 is connected with a sliding block 14, the first sliding groove 11 is a gourd-shaped sliding groove, the sliding block 14 slides in the first sliding groove 11, when the sliding block 14 slides to the gourd-shaped groove, the sliding block 14 is connected with a first connecting rod 15, so that, one end of a first connecting rod 15 connected with a second connecting rod 16 is fixed, so that the second connecting rod 16 moves downwards, the second connecting rod 16 far away from the first connecting rod 15 is connected with a connecting ring 17, the connecting ring 17 is connected with an output shaft 18, so that the output shaft 18 moves downwards, the outer side of the output shaft 18 is provided with a sliding block 19, the output shaft 18 is connected with a positioning block 20, the inside of the positioning block 20 is provided with a slide way 21, the sliding block 19 moves downwards in the slide way 21, when the sliding block 14 slides to a gourd-shaped round part, the output shaft 18 can recover the original position, the bottom of the positioning block 20 is connected with a rotating table 22, two sides of the rotating table 22 are provided with round grooves 23, a moving bar 13 is connected with the round grooves 23, the bottom of the rotating table 22 is connected with a rotating block 24, the surface of the rotating block 24 is provided with second sliding grooves 25, at least two rotating sliding, move in the second chute 25, make the turning block 24 rotate, drive the output shaft 18 to rotate, the top of the output shaft 18 connects with the display card 26, make the display card 26 rotate automatically.
To sum up, this rotation highway bill-board based on spout motion utilizes wind energy, through wind wheel 1, mount 2, input shaft 3, block axle 7, rotor plate 8, dog 9's connection, utilize wind energy to rotate the bill-board, make the automatic upset of bill-board, the problem that the energy consumption is high has been solved to a great extent, common traditional bill-board has been improved, the place that can establish by the highway but be difficult to reach at the electric energy that outdoor bill-board has, the higher problem of power supply system cost reduces the power consumption, resources are saved.
This rotation highway bill-board based on spout motion utilizes wind energy through the connection of first axis of rotation 10, rolling disc 101, output shaft 18, rotation platform 22, show tablet 26, practices thrift the cost, has solved the problem that is difficult to realize power supply upset bill-board, great improvement very power consumptive and cost such as higher of use shortcoming, practice thrift the cost, save the resource.
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 (7)
1. The utility model provides a rotation highway bill-board based on spout motion utilizes wind energy, includes wind wheel (1), its characterized in that: one end of the wind wheel (1) is movably connected with a fixed frame (2), the inner part of the fixed frame (2) is movably connected with an input shaft (3), the outer side of the input shaft (3) is movably connected with a turntable (4), a stop block (5) is arranged on the front surface of the turntable (4), rotating grooves (6) are formed in two sides of the turntable (4), a stop shaft (7) is movably connected with the outer side of the stop block (5), a rotating sheet (8) is movably connected with the bottom of the stop shaft (7), a stop block (9) is movably connected with one end of the rotating sheet (8), a first rotating shaft (10) is movably connected with the inner part of the rotating sheet (8), a rotating disc (101) is movably connected with the outer side of the first rotating shaft (10), a first sliding chute (11) is formed in the front surface of the rotating disc (101), a rotating slide column (12) is movably connected with the bottom of the rotating disc (101), a sliding block (14) is movably connected inside the first sliding groove (11), a first connecting rod (15) is movably connected outside the sliding block (14), a second connecting rod (16) is movably connected at one end, far away from the sliding block (14), of the first connecting rod (15), a connecting ring (17) is movably connected at one end, far away from the first connecting rod (15), of the second connecting rod (16), an output shaft (18) is movably connected inside the connecting ring (17), a sliding block (19) is arranged outside the output shaft (18), a positioning block (20) is movably connected outside the output shaft (18), a slide way (21) is arranged inside the positioning block (20), a rotating table (22) is movably connected at the bottom of the positioning block (20), circular grooves (23) are formed in two sides of the rotating table (22), a rotating block (24) is movably connected at the bottom of the rotating table (22), a second sliding groove (25) is, the top end of the output shaft (18) is movably connected with a display board (26).
2. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: the number of the wind wheels (1) is not less than two, and the wind wheels are symmetrically distributed about the axis of the input shaft (3).
3. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: the number of the stop blocks (5) is not less than two, and the stop blocks are symmetrically distributed about the axis of the rotary table (4).
4. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: the number of the rotating grooves (6) is not less than two, and the rotating grooves are symmetrically distributed about the axis of the rotating disc (4).
5. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: the number of the stop blocks (9) is not less than two, and the stop blocks are symmetrically distributed about the axis of the rotating sheet (8).
6. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: first spout (11) are calabash form spout, rotate traveller (12) and set up to be no less than two, with second spout (25) swing joint.
7. The rotary highway advertising board utilizing wind energy based on chute motion as claimed in claim 1, wherein: the motion strip (13) is movably connected with the circular groove (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272918.7A CN111369912A (en) | 2020-04-09 | 2020-04-09 | Rotating highway advertising board utilizing wind energy based on chute movement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010272918.7A CN111369912A (en) | 2020-04-09 | 2020-04-09 | Rotating highway advertising board utilizing wind energy based on chute movement |
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| Publication Number | Publication Date |
|---|---|
| CN111369912A true CN111369912A (en) | 2020-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010272918.7A Pending CN111369912A (en) | 2020-04-09 | 2020-04-09 | Rotating highway advertising board utilizing wind energy based on chute movement |
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| CN (1) | CN111369912A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739446A (en) * | 2020-07-10 | 2020-10-02 | 陈书亚 | Large-scale advertising device of environment-friendly based on wind energy |
| CN111768641A (en) * | 2020-07-31 | 2020-10-13 | 绍兴铭庭电子科技有限公司 | Road condition signal board capable of continuously rotating |
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| CN203746351U (en) * | 2014-03-31 | 2014-07-30 | 嘉兴职业技术学院 | Advertisement device for tourist attractions |
| CN105156277A (en) * | 2015-09-18 | 2015-12-16 | 柳荣贵 | Blade self-sagging windward windmill generator |
| CN105736237A (en) * | 2016-03-11 | 2016-07-06 | 庄秀宝 | Wind power generation device capable of being regulated windward and using method thereof |
| CN105767286A (en) * | 2014-12-23 | 2016-07-20 | 项小飞 | Wind powder tea leaf rolling device |
| CN108335642A (en) * | 2018-04-17 | 2018-07-27 | 吴青鸿 | A kind of wind power transmission wind skips billboard |
| CN108682298A (en) * | 2018-07-24 | 2018-10-19 | 合肥爱玩动漫有限公司 | A kind of cartoon billboard |
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2020
- 2020-04-09 CN CN202010272918.7A patent/CN111369912A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203746351U (en) * | 2014-03-31 | 2014-07-30 | 嘉兴职业技术学院 | Advertisement device for tourist attractions |
| CN105767286A (en) * | 2014-12-23 | 2016-07-20 | 项小飞 | Wind powder tea leaf rolling device |
| CN105156277A (en) * | 2015-09-18 | 2015-12-16 | 柳荣贵 | Blade self-sagging windward windmill generator |
| CN105736237A (en) * | 2016-03-11 | 2016-07-06 | 庄秀宝 | Wind power generation device capable of being regulated windward and using method thereof |
| CN108335642A (en) * | 2018-04-17 | 2018-07-27 | 吴青鸿 | A kind of wind power transmission wind skips billboard |
| CN108682298A (en) * | 2018-07-24 | 2018-10-19 | 合肥爱玩动漫有限公司 | A kind of cartoon billboard |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111739446A (en) * | 2020-07-10 | 2020-10-02 | 陈书亚 | Large-scale advertising device of environment-friendly based on wind energy |
| CN111768641A (en) * | 2020-07-31 | 2020-10-13 | 绍兴铭庭电子科技有限公司 | Road condition signal board capable of continuously rotating |
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Application publication date: 20200703 |
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