CN114863816A - Electronic display board for standard display of ecological protection red line - Google Patents
Electronic display board for standard display of ecological protection red line Download PDFInfo
- Publication number
- CN114863816A CN114863816A CN202210495877.7A CN202210495877A CN114863816A CN 114863816 A CN114863816 A CN 114863816A CN 202210495877 A CN202210495877 A CN 202210495877A CN 114863816 A CN114863816 A CN 114863816A
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- electronic display
- display board
- control module
- top plate
- board body
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- 230000003139 buffering effect Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005457 optimization Methods 0.000 description 2
- 241001465754 Metazoa Species 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
- G09F9/30—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements in which the desired character or characters are formed by combining individual elements
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/02—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems
- F16F15/04—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means
- F16F15/06—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs
- F16F15/067—Suppression of vibrations of non-rotating, e.g. reciprocating systems; Suppression of vibrations of rotating systems by use of members not moving with the rotating systems using elastic means with metal springs using only wound springs
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/24—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other
- F16M11/26—Undercarriages with or without wheels changeable in height or length of legs, also for transport only, e.g. by means of tubes screwed into each other by telescoping, with or without folding
- F16M11/28—Undercarriages for supports with one single telescoping pillar
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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
- Y02E10/50—Photovoltaic [PV] energy
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to an electronic display board for the standard display of ecological protection red lines, which comprises a receiving base for receiving an electronic display board body, wherein an electric telescopic rod is arranged on the receiving base; the two sides of the connecting seat are provided with buffer resetting devices; a trigger device is arranged between the connecting seat and the top plate, and a reset fixing device is arranged on the top plate. The electronic display board can be reset, fixed and stored under the condition of large swing amplitude in strong wind weather, the electronic display board is prevented from being damaged, the electronic display board can be automatically lifted after wind power is small, the intelligent degree is high, and the electronic display board is strong in protection.
Description
Technical Field
The invention belongs to the technical field of display boards, and particularly relates to an electronic display board for standard display of ecological protection red lines.
Background
The ecological protection area is a general term of a special area which is defined for protecting precious and endangered animals, plants and various typical ecological systems, protecting precious geological profiles, providing places for natural protection education, scientific research and propaganda activities and developing tourism and production activities in a specified area. The ecological protection red line is an innovative measure in the field of ecological protection in recent years in China, and is arranged around an ecological protection area for definition and reminding.
At present, a plurality of electronic display boards are generally arranged on an ecological protection red line, and relevant information of an ecological protection area can be displayed on the electronic display boards. Because the wind area of the electronic display board is large, when strong wind blows, the electronic display board cannot release strong instantaneous acting force caused by strong wind, and the electronic display board can be damaged, so that property loss is caused.
Therefore, there is a need to provide a new electronic display board for the specification display of ecological protection red lines to solve the above technical problems.
Disclosure of Invention
The present invention is directed to solving the above problems and providing an electronic display board for displaying ecological protection red line specifications.
The invention realizes the purpose through the following technical scheme:
an electronic display board for the standard display of ecological protection red lines comprises an electronic display board body and a storage base for storing the electronic display board body, wherein an electric telescopic rod is arranged on the storage base, a top plate is arranged on the top side of the electric telescopic rod, a wind power detector is arranged on the top side of the top plate, a connecting seat is rotatably arranged on the bottom side of the top plate, and the electronic display board body is fixedly arranged on the bottom side of the connecting seat; the two sides of the connecting seat are provided with buffer resetting devices; a trigger device is arranged between the connecting seat and the top plate, and a reset fixing device is arranged on the top plate; a control module is arranged in the containing base, and the wind power detector, the electric telescopic rod, the triggering device and the reset fixing device are all connected with the control module;
the electronic display board body comprises the following steps:
s1: when the swing amplitude of the electronic display board body is too large to trigger the triggering device, the control module controls the reset fixing device to reset and fix the electronic display board, and the control module controls the electric telescopic rod to descend and store the electronic display board body into the storage base;
s2: the wind power detector continuously detects the wind power strength value and transmits the wind power strength value to the control module in the storage state, the control module judges whether the wind power strength value in a preset period is always lower than a preset value, and if yes, the control module controls the electric telescopic rod to lift the electronic display board body; if not, keeping the electronic display board body in the storage state and repeating the steps of detecting and judging the wind strength value in the next preset period.
As a further optimized scheme of the invention, a solar panel is arranged on the containing base, a solar controller and a storage battery are arranged in the containing base, the solar panel and the storage battery are both connected with the solar controller, and the storage battery is connected with the control module.
As a further optimized solution of the present invention, the receiving base is provided with a receiving groove for receiving the electronic display board body, and the top plate is used for closing the receiving groove when receiving the electronic display board body.
As a further optimized scheme of the invention, the top side of the containing base is provided with a positioning groove, the bottom side of the top plate is provided with a positioning pin, and the positioning pin is matched with the positioning groove.
As a further optimized scheme of the invention, the containing base is provided with a drain hole, the drain hole is communicated with the containing groove, and the drain hole is obliquely arranged.
As a further optimized solution of the present invention, the bottom side of the receiving base is provided with a plurality of foundation piles.
As a further optimization scheme of the invention, the buffer resetting device comprises a spring telescopic rod which is rotatably connected to the connecting seat, and one end of the spring telescopic rod, which is far away from the connecting seat, is rotatably connected with the top plate.
As a further optimized scheme of the invention, the triggering device comprises two triggering buttons symmetrically arranged at the bottom side of the top plate and two protruding blocks symmetrically arranged on the connecting seat, and the triggering buttons are connected with the control module.
As a further optimization scheme of the invention, the reset fixing device comprises a housing arranged on the top plate, a motor is arranged in the housing, a rotating shaft is arranged on an output shaft of the motor, a driving gear is sleeved on the rotating shaft, the top plate is provided with two through holes, a push rod is slidably arranged in the through holes, the bottom end of the push rod extends out of the through holes and is in contact with the connecting seat, a screw rod is rotatably arranged in the through holes, the push rod is in threaded sleeve connection with the screw rod, the top end of the screw rod extends out of the through holes and is in sleeve connection with a driven gear, and the driven gear is meshed with the driving gear.
As a further optimized scheme of the invention, a bearing is fixedly arranged in the through hole, and the screw rod is fixedly sleeved with an inner ring of the bearing.
The invention has the beneficial effects that:
the electronic display board can be reset, fixed and stored under the condition of large swing amplitude in strong wind weather, the electronic display board is prevented from being damaged, the electronic display board can be automatically lifted after wind power is small, the intelligent degree is high, and the electronic display board is strong in protection.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is an enlarged view of the structure of portion A of FIG. 1;
FIG. 3 is a block diagram of the control module of the present invention.
In the figure: 1. a receiving base; 2. foundation piles; 3. a receiving groove; 4. an electric telescopic rod; 5. a top plate; 6. a wind detector; 7. a connecting seat; 8. an electronic display board body; 10. a spring telescopic rod; 11. a solar panel; 12. a drain hole; 13. positioning pins; 14. positioning a groove; 15. a housing; 16. a motor; 17. a rotating shaft; 18. a driving gear; 19. a through hole; 20. a top rod; 21. a screw; 22. a driven gear; 23. a trigger button; 24. and (4) a convex block.
Detailed Description
The present application will now be described in further detail with reference to the drawings, it should be noted that the following detailed description is given for illustrative purposes only and is not to be construed as limiting the scope of the present application, as those skilled in the art will be able to make numerous insubstantial modifications and adaptations to the present application based on the above disclosure.
Example 1
As shown in fig. 1-3, an electronic display board for standard display of ecological protection red lines comprises an electronic display board body 8 and a receiving base 1 for receiving the electronic display board body 8, wherein a plurality of foundation piles 2 are arranged on the bottom side of the receiving base 1, an electric telescopic rod 4 is arranged on the receiving base 1, a top plate 5 is arranged on the top side of the electric telescopic rod 4, a wind power detector 6 is arranged on the top side of the top plate 5, a connecting seat 7 is rotatably arranged on the bottom side of the top plate 5, and the electronic display board body 8 is fixedly arranged on the bottom side of the connecting seat 7; two sides of the connecting seat 7 are provided with buffer resetting devices; a trigger device is arranged between the connecting seat 7 and the top plate 5, and a reset fixing device is arranged on the top plate 5; a control module is arranged in the containing base 1, and the wind power detector 6, the electric telescopic rod 4, the triggering device and the reset fixing device are all connected with the control module;
the electronic display board body 8 comprises the following steps:
s1: when the oscillation amplitude of the electronic display board body 8 is too large to trigger the triggering device, the control module controls the reset fixing device to reset and fix the electronic display board 8, and the control module controls the electric telescopic rod 4 to descend the electronic display board body 8 to be stored in the storage base 1;
s2: in the storage state, the wind power detector 6 continuously detects a wind power strength value and transmits the wind power strength value to the control module, the control module judges whether the wind power strength value in a preset period is always lower than a preset value, if so, the control module controls the electric telescopic rod 4 to lift the electronic display board body 8; if not, keeping the electronic display board body 8 in the storage state and repeating the steps of detecting and judging the wind strength value in the next preset period.
The control module judges whether the wind strength value is larger than a preset value, if not, the electronic display board body 8 is kept in a lifting state; if yes, the control module controls the electric telescopic rod to store the electronic display board body 8; in the storage state, the wind power detector 6 continuously detects the wind power strength value, the control module judges whether the wind power strength value in the preset period is always lower than a preset value, and if so, the control module controls the electric telescopic rod to lift the electronic display board body 8; if not, keeping the electronic display board body 8 in the storage state and repeating the steps of detecting and judging the wind strength value in the next preset period.
Accomodate and be provided with solar panel 11 on the base 1, it is provided with solar control ware and battery in the base 1 to accomodate, solar panel 11 with the battery all with solar control ware is connected, the battery with control module is connected, and solar panel 11 converts solar energy into the electric energy and stores in the battery and supply power, green for the device.
The storage base 1 is provided with a storage groove 3 for storing the electronic display board body 8, and the top plate 5 is used for sealing the storage groove 3 when the electronic display board body 8 is stored.
The top side of the storage base 1 is provided with a positioning groove 14, the bottom side of the top plate 5 is provided with a positioning pin 13, and the positioning pin 13 is matched with the positioning groove 14, so that the top plate 5 is more stable in a storage state.
The containing base 1 is provided with a drain hole 12, the drain hole 12 is communicated with the containing groove 3, the drain hole 12 is obliquely arranged, and the drain hole 12 drains rainwater falling into the containing groove 3.
Buffering resetting means is connected including rotating spring telescopic link 10 on connecting seat 7, spring telescopic link 10 is kept away from the one end of connecting seat 7 with roof 5 rotates to be connected, and when electronic display board body 8 received wind-force and blows, electronic display board body 8 can have the swing of small range along with the wind, cushions the powerful instantaneous effort that wind caused, prevents to cause the damage to electronic display board body 8, and spring telescopic link 10 plays the effect that the buffering resets.
The trigger device comprises two trigger buttons 23 symmetrically arranged on the bottom side of the top plate 5 and two convex blocks 24 symmetrically arranged on the connecting seat 7, and the trigger buttons 23 are connected with the control module.
The reset fixing device comprises a shell 15 arranged on a top plate 5, a motor 16 is arranged in the shell 15, a rotating shaft 17 is arranged on an output shaft of the motor 16, a driving gear 18 is sleeved on the rotating shaft 17, two through holes 19 are formed in the top plate 5, an ejector rod 20 is slidably arranged in each through hole 19, the bottom end of the ejector rod 20 extends to the outside of each through hole 19 and is in contact with the connecting seat 7, a screw rod 21 is rotatably arranged in each through hole 19, a bearing is fixedly arranged in each through hole 19, the screw rod 21 is fixedly sleeved with an inner ring of the bearing, the ejector rod 20 is in threaded sleeve connection with the screw rod 21, the top end of the screw rod 21 extends to the outside of each through hole 19 and is sleeved with a driven gear 22, and the driven gear 22 is meshed with the driving gear 18.
The working principle of the electronic display board for the standard display of the ecological protection red line provided by the invention is as follows:
when the wind power is large, the electronic display board body 8 swings in a small range, when the swing amplitude is too large, the trigger device is triggered, the trigger device transmits a signal to the control module, the control module controls the starting motor 16, the motor 16 drives the rotating shaft 17 to rotate, the rotating shaft 17 drives the driving gear 18 to rotate, the driving gear 18 drives the two driven gears 22 to rotate, the driven gears 22 drive the screw 21 to rotate, the screw 21 drives the ejector rods 20 to move downwards and extend out of the through holes 19, the ejector rods 20 continue to move downwards after being in contact with the connecting seat 7 until the two ejector rods 20 are both in contact with the connecting seat 7, at the moment, the connecting seat 7 resets and is fixed in position, and then the control module controls the electric telescopic rod 4 to store the electronic display board 8 into the storage groove 3; in the storage state, the wind power detector 6 detects a wind power strength value in real time and transmits the wind power strength value to the control module, the control module judges whether the wind power strength value is larger than a preset value or not, the control module judges whether the wind power strength value in a preset period is always lower than the preset value or not, for example, whether the wind power value in 1 hour is always lower than the preset value or not, if yes, the control module controls the electric telescopic rod 4 to lift the electronic display board body 8; if not, the electronic display board body 8 is kept in the storage state, the steps of detecting and judging the wind strength value in the next preset period are repeated, whether the wind strength value in the next hour is always lower than the preset value is judged, and the electronic display board body 8 is lifted until the wind strength value in the next hour is always lower than the preset value in the preset period.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.
Claims (10)
1. The utility model provides an electronic display board that is used for ecological protection red line standard to show which characterized in that: the electronic display board comprises an electronic display board body (8) and a storage base (1) used for storing the electronic display board body (8), wherein an electric telescopic rod (4) is arranged on the storage base (1), a top plate (5) is arranged on the top side of the electric telescopic rod (4), a wind power detector (6) is arranged on the top side of the top plate (5), a connecting seat (7) is rotatably installed on the bottom side of the top plate (5), and the electronic display board body (8) is fixedly installed on the bottom side of the connecting seat (7); the two sides of the connecting seat (7) are provided with buffer resetting devices; a trigger device is arranged between the connecting seat (7) and the top plate (5), and a reset fixing device is arranged on the top plate (5); a control module is arranged in the containing base (1), and the wind power detector (6), the electric telescopic rod (4), the trigger device and the reset fixing device are all connected with the control module;
the electronic display board body (8) comprises the following steps:
s1: when the swing amplitude of the electronic display board body (8) is too large to trigger the triggering device, the control module controls the reset fixing device to reset and fix the electronic display board (8), and the control module controls the electric telescopic rod (4) to descend and store the electronic display board body (8) into the storage base (1);
s2: the wind power detector (6) detects a wind power strength value and transmits the wind power strength value to the control module in a storage state, the control module judges whether the wind power strength value in a preset period is always lower than a preset value, if so, the control module controls the electric telescopic rod (4) to lift the electronic display board body (8); if not, keeping the electronic display board body (8) in a storage state, and repeating the steps of detecting and judging the wind strength value in the next preset period.
2. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: accomodate and be provided with solar panel (11) on base (1), it is provided with solar control ware and battery in base (1) to accomodate, solar panel (11) with the battery all with solar control ware is connected, the battery with control module is connected.
3. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: accomodate and seted up on base (1) and be used for accomodating accomodate groove (3) of electronic display board body (8), roof (5) are used for accomodating when accomodating electronic display board body (8) seal accomodate groove (3).
4. The electronic display board for the specification display of the ecological protection red line according to claim 3, wherein: the top side of the storage base (1) is provided with a positioning groove (14), the bottom side of the top plate (5) is provided with a positioning pin (13), and the positioning pin (13) is matched with the positioning groove (14).
5. The electronic display board for the specification display of the ecological protection red line according to claim 3, wherein: the containing base (1) is provided with a drain hole (12), the drain hole (12) is communicated with the containing groove (3), and the drain hole (12) is obliquely arranged.
6. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: the bottom side of the containing base (1) is provided with a plurality of foundation piles (2).
7. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: the buffering reset device comprises a spring telescopic rod (10) which is rotatably connected to the connecting seat (7), and one end, far away from the connecting seat (7), of the spring telescopic rod (10) is rotatably connected with the top plate (5).
8. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: the trigger device comprises two trigger buttons (23) symmetrically arranged at the bottom side of the top plate (5) and two protruding blocks (24) symmetrically arranged on the connecting seat (7), and the trigger buttons (23) are connected with the control module.
9. The electronic display board for the specification display of the ecological protection red line according to claim 1, wherein: reset fixing device is including setting up casing (15) on roof (5), be provided with motor (16) in casing (15), be provided with pivot (17) on the output shaft of motor (16), driving gear (18) have been cup jointed in pivot (17), two through-holes (19) have been seted up on the roof (5), through-hole (19) slidable mounting has ejector pin (20), the bottom of ejector pin (20) extends to through-hole (19) outside and with connecting seat (7) contact, screw rod (21) are installed to through-hole (19) internal rotation, ejector pin (20) screw thread cup joints on screw rod (21), the top of screw rod (21) extends to outside and cup jointed driven gear (22) in through-hole (19), driven gear (22) with driving gear (18) meshing.
10. The electronic display board for the specification display of the ecological protection red line according to claim 9, wherein: the bearing is fixedly arranged in the through hole (19), and the screw rod (21) is fixedly sleeved with an inner ring of the bearing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495877.7A CN114863816B (en) | 2022-05-09 | 2022-05-09 | Electronic display board for ecological protection red line standard display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210495877.7A CN114863816B (en) | 2022-05-09 | 2022-05-09 | Electronic display board for ecological protection red line standard display |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114863816A true CN114863816A (en) | 2022-08-05 |
| CN114863816B CN114863816B (en) | 2023-06-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210495877.7A Active CN114863816B (en) | 2022-05-09 | 2022-05-09 | Electronic display board for ecological protection red line standard display |
Country Status (1)
| Country | Link |
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| CN (1) | CN114863816B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207676571U (en) * | 2017-11-22 | 2018-07-31 | 芜湖惊鸿广告传媒有限公司 | A kind of building safety billboard |
| CN207815985U (en) * | 2018-01-11 | 2018-09-04 | 东莞市咏达热能科技有限公司 | A kind of combination type heating furnace |
| CN208861618U (en) * | 2018-09-28 | 2019-05-14 | 桂林军威标识制作有限公司 | A kind of scenic spot mark guide board with wind-shielding function |
| CN212724519U (en) * | 2020-08-27 | 2021-03-16 | 郑州电力职业技术学院 | Novel electronic information display board |
| CN112901945A (en) * | 2021-02-26 | 2021-06-04 | 深圳市深温建材有限公司 | High-rise billboard device with wind-force risk avoiding and protection functions |
-
2022
- 2022-05-09 CN CN202210495877.7A patent/CN114863816B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN207676571U (en) * | 2017-11-22 | 2018-07-31 | 芜湖惊鸿广告传媒有限公司 | A kind of building safety billboard |
| CN207815985U (en) * | 2018-01-11 | 2018-09-04 | 东莞市咏达热能科技有限公司 | A kind of combination type heating furnace |
| CN208861618U (en) * | 2018-09-28 | 2019-05-14 | 桂林军威标识制作有限公司 | A kind of scenic spot mark guide board with wind-shielding function |
| CN212724519U (en) * | 2020-08-27 | 2021-03-16 | 郑州电力职业技术学院 | Novel electronic information display board |
| CN112901945A (en) * | 2021-02-26 | 2021-06-04 | 深圳市深温建材有限公司 | High-rise billboard device with wind-force risk avoiding and protection functions |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114863816B (en) | 2023-06-20 |
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