CN114999313A - Windproof label and construction method thereof - Google Patents
Windproof label and construction method thereof Download PDFInfo
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- CN114999313A CN114999313A CN202210679359.0A CN202210679359A CN114999313A CN 114999313 A CN114999313 A CN 114999313A CN 202210679359 A CN202210679359 A CN 202210679359A CN 114999313 A CN114999313 A CN 114999313A
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- 238000010276 construction Methods 0.000 title claims abstract description 9
- 238000004891 communication Methods 0.000 claims abstract description 7
- 238000005096 rolling process Methods 0.000 claims description 12
- 238000009423 ventilation Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 claims 1
- 239000003570 air Substances 0.000 description 6
- 238000009434 installation Methods 0.000 description 4
- 230000007613 environmental effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000010959 steel Substances 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
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F7/20—Means for attaching signs, plates, panels, or boards to a supporting structure for adjustably mounting
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F7/00—Signs, name or number plates, letters, numerals, or symbols; Panels or boards
- G09F7/18—Means for attaching signs, plates, panels, or boards to a supporting structure
- G09F2007/1834—Signs or the like supported by two lateral posts
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Road Signs Or Road Markings (AREA)
Abstract
The invention discloses a windproof sign and a construction method thereof, relates to signs, and aims to solve the problem that the sign placed outdoors is easy to topple in extreme weather with large wind power, and the technical scheme is characterized in that: the wind speed tester comprises a base and a plurality of supporting rods located on the base, wherein the supporting rods are symmetrically arranged, the same signboard board is connected to the supporting rods in a sliding mode, a wind speed tester is fixedly connected to the base, a lifting assembly is fixedly connected to the inside of each supporting rod and is in communication connection with the wind speed tester, and the lifting assembly is used for driving the signboard board to lift. According to the invention, the current ambient wind speed is monitored in real time through the wind speed tester, and after the ambient wind speed is greater than the wind speed threshold value, the possibility of label toppling is judged, so that the lifting assembly is started to drive the label plate to move downwards, and further, when the label plate is stressed, the distance from the stress point to the base is shortened, so that the label plate is not easy to topple.
Description
Technical Field
The present invention relates to signage, and more particularly, to a windproof signage and a construction method thereof.
Background
The label is used for manufacturing a sign board of a sign as the name implies, and the label is provided with contents such as characters, patterns and the like to play a role in indicating directions and warning. The common signs include public service signs, cultural signs, indicating signs and warning signs.
The existing label comprises a support and a label plate, the label plate placed outdoors is easily stressed under the extreme weather with large wind power, so that the label plate is easily toppled, and the safety of people can be influenced when the label plate is serious.
Therefore, a new solution is needed to solve this problem.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a windproof sign and a construction method thereof.
The technical purpose of the invention is realized by the following technical scheme: the utility model provides a prevent wind sign, includes base and a plurality of bracing pieces that are located on the base, and the symmetry sets up sliding connection has same sign board on the bracing piece, fixedly connected with wind speed tester on the base, the lifting unit that fixedly connected with and wind speed tester communication are connected in the bracing piece, lifting unit is used for driving sign board and goes up and down, be equipped with the wind speed threshold value in the wind speed tester, work as when the wind speed threshold value is less than the environment wind speed, lifting unit drives the decline of sign board, works as when the wind speed threshold value is greater than the environment wind speed, lifting unit drives the sign board and rises to predetermineeing the position.
Through adopting above-mentioned technical scheme, when the sign runs into the gale day, wind speed tester real-time supervision ambient wind speed then, be greater than the wind speed threshold value back at ambient wind speed, judge probably there is the danger that the sign emptys, thereby start lifting unit drive sign board downstream, and then when sign board atress, through shortening the distance between stress point to the base, thereby make the sign be difficult to blown down, after ambient wind speed falls, it rises to predetermineeing the position to drive the sign board through lifting unit, thereby avoided the sign to be blown down in the gale day and lead to dangerous condition.
The invention is further configured to: the lifting assembly comprises a driving motor, a rotating disc, a fixed pulley and a connecting rope, the output end of the driving motor is connected with the rotating disc, the fixed pulley is rotatably connected to the top end of the supporting rod, two ends of the connecting rope are respectively fixed to one side of the top surface of the label plate and the rotating disc, and the connecting rope is connected with the fixed pulley in a sliding mode.
Through adopting above-mentioned technical scheme, driving motor drives the rolling disc and rotates to drive and connect the rope rolling to the rolling disc or from the rolling disc expansion, the fixed pulley can conveniently connect turning to of rope, and the rolling of connecting the rope or expansion can drive the label board and rise or descend.
The invention is further configured to: the bottom surface of base can be dismantled and be connected with a plurality of built-in fittings, the built-in fitting includes the perpendicular main part that sets up and a plurality of horizontal parts that transversely set up, main part and horizontal part fixed connection.
Through adopting above-mentioned technical scheme, when setting up the sign, the trunk portion can provide fore-and-aft extension for the horizontal part buries at the bottom of the ground, through the fixed of built-in fitting and base, thereby easy to assemble sign, the horizontal part can restrict the displacement of sign on vertical, thereby makes the sign installation more firm, and can bear bigger wind-force.
The invention is further configured to: the support rod is connected with a stop switch in a sliding mode, and the label plate abuts against the stop switch and is used for closing the lifting assembly.
Through adopting above-mentioned technical scheme, the sign board rises under lifting unit's drive, stops the switch until sign board butt to close lifting unit, make the removal of sign board stop, and then conveniently fix a position the sign board when the sign board resets, stop the switch through sliding, thereby conveniently adjust the final position of sign board, after setting up a plurality of bracing pieces, make things convenient for a plurality of sign board dislocation set, convenient show.
The invention is further configured to: the horizontal part is the heliciform setting, and a plurality of the horizontal part end to end connects, the cadre is located the central authorities of horizontal part, the bottom of cadre is equipped with most advanced, the top of cadre is formed with the hexagonal head that is used for imbedding box spanner.
Through adopting above-mentioned technical scheme, when installing the sign on earth, the built-in fitting accessible is most advanced to be inserted, realizes prepositioning, then drives the built-in fitting through hexagonal head and box spanner and rotates, because the horizontal part is the heliciform setting to make in the rotatable embedding earth of built-in fitting, make things convenient for the installation of built-in fitting.
The invention is further configured to: the automatic lifting device is characterized by further comprising a controller, wherein the controller is in communication connection with the lifting assembly and is used for achieving lifting of the signboard plate.
By adopting the technical scheme, the sign board can be manually controlled to ascend and descend through the controller, so that the situation that the sign board is not rainy is conveniently achieved, and accidents are avoided.
The invention is further configured to: the supporting rod is fixedly connected with a guide rod arranged in parallel with the supporting rod, and both sides of the signboard plate are fixedly connected with linear bearings sleeved on the guide rod.
Through adopting above-mentioned technical scheme, move on the guide bar through linear bearing to play the guide effect to the removal of signboard board, make the lift of signboard board more steady, and through linear bearing's slip, reduce frictional force, make the removal of signboard board more smooth and easy.
A construction method of a windproof sign comprises the following steps:
s1, installing embedded parts, and embedding the main part and the horizontal part into the ground;
s2, fixing the embedded part with the base;
s3, mounting a plurality of support rods and a wind speed tester on a base;
s4, mounting a label plate, sleeving connecting ropes symmetrically arranged in supporting rods on a fixed pulley, and fixing the connecting ropes with one side of the top surface of the label plate;
s5, setting a preset position of the sliding stop switch to enable different signboard boards to be arranged in a step shape;
s6, setting a threshold value of the wind speed tester;
s7, blowing air to the wind speed tester by using ventilation equipment such as a fan and the like for field debugging, testing the wind speed of the ventilation equipment by holding the wind speed tester, controlling the wind speed above and below a threshold value, testing for multiple times, observing the starting and stopping of the lifting assembly and debugging.
In conclusion, the invention has the following beneficial effects: when the sign runs into the gale day, wind speed tester real-time supervision environment wind speed at that time, after environment wind speed is greater than the wind speed threshold value, judge the danger that probably has the sign to empty, thereby start lifting unit drive sign board downstream, and then when the sign board atress, through shortening the distance between stress point to the base, thereby make the sign be difficult to blown down, after environment wind speed falls, through lifting unit drive sign board rising to predetermineeing the position, thereby avoided the sign to be blown down in the gale day and lead to dangerous condition.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic structural view of an embedded part according to the present invention;
FIG. 4 is a cross-sectional view of the present invention;
fig. 5 is an enlarged view of a portion B in fig. 4.
In the figure: 1. a base; 2. a support bar; 3. a label plate; 4. a wind speed tester; 5. a drive motor; 6. rotating the disc; 7. a fixed pulley; 8. connecting ropes; 9. embedding parts; 10. a trunk portion; 11. a horizontal portion; 12. a tip; 13. a slideway; 14. a stop switch; 15. a hexagonal head; 16. a guide bar; 17. and a linear bearing.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
A windproof sign and a construction method thereof are disclosed, as shown in figures 1 and 2, the windproof sign comprises a base 1, a plurality of support rods 2 and a controller, wherein the support rods 2 are positioned on the base 1, the support rods 2 and the base 1 are detachably connected through bolts, the symmetrically arranged support rods 2 are connected with a same sign board 3 in a sliding mode, specifically, guide rods 16 which are arranged in parallel with the support rods 2 are welded on the support rods 2, and linear bearings 17 which are sleeved on the guide rods 16 are welded on two sides of each sign board 3.
As shown in fig. 1 and 3, a plurality of built-in fittings 9 can be dismantled and be connected with in the bottom surface of base 1, built-in fitting 9 includes the main part 10 of vertical setting and a plurality of horizontal part 11 that transversely sets up, main part 10 and horizontal part 11 welding, horizontal part 11 is the heliciform setting, 11 end to end welding of a plurality of horizontal parts, the bottom of main part 10 is equipped with coniform most advanced 12, the top of main part 10 is formed with the hexagon head 15 that is used for imbedding box spanner, the threaded hole is seted up to hexagon head 15 central authorities, threaded connection has the bolt with the screw hole complex on the base 1, install wind speed tester 4 on the base 1, wind speed tester 4 is prior art, the event is no longer described herein.
As shown in fig. 1, 2, 4 and 5, a lifting assembly in communication connection with an air speed tester 4 is fixedly connected in a support rod 2, the lifting assembly is used for driving a signboard board 3 to lift, the lifting assembly comprises a driving motor 5, a rotating disc 6, a fixed pulley 7 and a connecting rope 8, an output end of the driving motor 5 is connected with the rotating disc 6 through a coupler, the driving motor 5 is a servo motor, the fixed pulley 7 is rotatably connected to the top end of the support rod 2, two ends of the connecting rope 8 are respectively fixed on one side of the top surface of the signboard board 3 and the rotating disc 6, the connecting rope 8 is a steel rope, one end of the connecting rope 8 is in threaded connection with a hook, hanging holes for the hook to pass through are respectively formed in two sides of the signboard board 3, the connecting rope 8 is in sliding connection with the fixed pulley 7, an air speed threshold is arranged in the air speed tester 4, when the air speed threshold is smaller than an ambient air speed, the lifting assembly drives the signboard board 3 to descend, when the wind speed threshold value is greater than the environmental wind speed, the lifting assembly drives the signboard board 3 to ascend to a preset position, the supporting rod 2 is connected with a stop switch 14 in a sliding mode, the supporting rod 2 is provided with a slide 13 containing the stop switch 14 in a sliding mode, the slide 13 is arranged along the length direction of the supporting rod 2, the position of the stop switch 14 is the preset position, the signboard board 3 abuts against the stop switch 14 and is used for closing the lifting assembly, and the controller is in communication connection with the lifting assembly and is used for achieving the lifting of the signboard board 3.
A construction method of a windproof sign comprises the following steps:
s1, installing the embedded part 9, and embedding the main part 10 and the horizontal part 11 underground, specifically, when the embedded part 9 is embedded in the bottom surface of concrete, drilling a hole and vertically placing the embedded part 9, then filling the hole with the concrete, when a sign is installed on the soil, inserting the embedded part 9 through the tip 12 to realize pre-positioning, and then driving the embedded part 9 to rotate through the hexagonal head 15 and the socket wrench, wherein the horizontal part 11 is spirally arranged, so that the embedded part 9 can be rotatably embedded into the soil;
s2, fixing the embedded part 9 and the base 1, specifically, bolting the base 1 and the embedded part 9 through bolts;
s3, mounting a plurality of support rods 2 and a wind speed tester 4 on a base 1;
s4, installing the signboard board 3, sleeving the connecting ropes 8 symmetrically arranged in the supporting rods 2 on the fixed pulleys 7, and fixing the connecting ropes 8 and one side of the top surface of the signboard board 3;
s5 the slide stop switch 14 is set to a preset position so that different signboard plates 3 are arranged in a step shape;
s6, setting a 4-threshold wind speed tester;
s7, blowing air to the wind speed tester 4 by using ventilation equipment such as a fan and the like for field debugging, testing the wind speed of the ventilation equipment by holding the wind speed tester, controlling the wind speed above and below a threshold value, testing for multiple times, observing the starting and stopping of the lifting assembly and debugging.
The working principle is as follows: when installing the sign on earth, 9 accessible pointed ends 12 of built-in fitting insert, realize pre-positioning, then drive built-in fitting 9 through hexagonal head 15 and box spanner and rotate, because horizontal part 11 is the heliciform setting, thereby make in the rotatable embedding earth of built-in fitting 9, make things convenient for the installation of built-in fitting 9, when setting up the sign, main part 10 can provide fore-and-aft extension, make horizontal part 11 bury at the bottom of the ground, through the fixed of built-in fitting 9 and base 1, thereby the easy to assemble sign, horizontal part 11 can restrict the displacement of sign on vertical, thereby make the sign installation more firm, and can bear bigger wind-force.
When the signboard meets a strong wind day, the wind speed tester 4 monitors the current environmental wind speed in real time, and after the environmental wind speed is greater than a wind speed threshold value, the danger that the signboard falls down is judged to possibly exist, so that the lifting assembly is started to drive the signboard board 3 to move downwards, the driving motor 5 drives the rotating disc 6 to rotate, so that the connecting rope 8 is driven to unfold from the rotating disc 6, the fixed pulley 7 can facilitate the steering of the connecting rope 8, the connecting rope 8 unfolds to drive the signboard board 3 to descend, the connecting rope 8 moves on the guide rod 16 through the linear bearing 17, so that the movement of the signboard board 3 is guided, the lifting of the signboard board 3 is more stable, the friction force is reduced through the sliding of the linear bearing 17, the movement of the signboard board 3 is smoother, further, when the signboard board 3 is stressed, the distance between a stress point and the base 1 is shortened, so that the signboard is not easy to fall down, and the lifting of the signboard board 3 can be artificially controlled through the controller, thereby conveniently achieving the effect of no rain and silk and avoiding accidents.
After ambient wind speed fell, it rises to predetermineeing the position to drive signboard board 3 through lifting unit, and is concrete, driving motor 5 drives rolling disc 6 and rotates, thereby it connects on rope 8 rolling to rolling disc 6 to drive, fixed pulley 7 can conveniently connect turning to of rope 8, the rolling of connecting rope 8 can drive signboard board 3 and rise, signboard board 3 rises under lifting unit's drive, it stops switch 14 to contradict until signboard board 3, thereby close lifting unit, make the removal of signboard board 3 stop, and then conveniently fix a position signboard board 3 when signboard board 3 resets, stop switch 14 through sliding, thereby conveniently adjust the final position of signboard board 3, after setting up a plurality of bracing pieces 2, make things convenient for a plurality of signboard board 3 dislocation set, convenient show.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (8)
1. A windproof sign, characterized by: including base (1) and a plurality of bracing piece (2) that are located on base (1), the symmetry sets up sliding connection has same signboard board (3) on bracing piece (2), fixedly connected with wind speed tester (4) on base (1), the lifting unit that fixedly connected with and wind speed tester (4) communication are connected in bracing piece (2), lifting unit is used for driving signboard board (3) to go up and down, be equipped with the wind speed threshold value in wind speed tester (4), work as when the wind speed threshold value is less than the environment wind speed, lifting unit drives signboard board (3) and descends, works as when the wind speed threshold value is greater than the environment wind speed, lifting unit drives signboard board (3) and rises to preset position.
2. The wind resistant sign according to claim 1, wherein: lifting unit includes driving motor (5), rolling disc (6), fixed pulley (7) and connects rope (8), the output and the rolling disc (6) of driving motor (5) are connected, fixed pulley (7) rotate to be connected on bracing piece (2) top, connect the both ends of rope (8) and fix respectively on one side and rolling disc (6) of signboard board (3) top surface, connect rope (8) and fixed pulley (7) sliding connection.
3. The wind resistant sign according to claim 2, wherein: the base is characterized in that a plurality of embedded parts (9) are detachably connected to the bottom surface of the base (1), each embedded part (9) comprises a vertically arranged main part (10) and a plurality of transversely arranged horizontal parts (11), and the main parts (10) are fixedly connected with the horizontal parts (11).
4. The wind resistant sign according to claim 3, wherein: the anti-stop switch is characterized in that the supporting rod (2) is connected with an anti-stop switch (14) in a sliding mode, and the signboard plate (3) abuts against the anti-stop switch (14) and is used for closing the lifting assembly.
5. The wind resistant sign according to claim 3, wherein: the socket wrench is characterized in that the horizontal part (11) is spirally arranged, the horizontal parts (11) are connected end to end, the main part (10) is located in the center of the horizontal part (11), a tip (12) is arranged at the bottom end of the main part (10), and a hexagonal head (15) used for being embedded into a socket wrench is formed at the top end of the main part (10).
6. The wind resistant sign according to claim 1, wherein: the automatic signboard fixing device is characterized by further comprising a controller, wherein the controller is in communication connection with the lifting assembly and is used for achieving lifting of the signboard board (3).
7. The wind resistant sign according to claim 1, wherein: the supporting rod (2) is fixedly connected with a guide rod (16) arranged in parallel with the supporting rod, and two sides of the signboard plate (3) are fixedly connected with linear bearings (17) sleeved on the guide rod (16).
8. A construction method of a wind-proof sign is applied to the wind-proof sign of claims 1 to 4, and is characterized in that: the method comprises the following steps:
s1, installing an embedded part (9), and embedding the main part (10) and the horizontal part (11) into the ground;
s2, fixing the embedded part (9) and the base (1);
s3 a plurality of support rods (2) and an air speed tester (4) are arranged on a base (1);
s4, mounting a signboard board (3), sleeving connecting ropes (8) symmetrically arranged in supporting rods (2) on a fixed pulley (7), and fixing the connecting ropes (8) with one side of the top surface of the signboard board (3);
s5 the slide stop switch (14) is arranged at a preset position, so that different signboard plates (3) are arranged in a step shape;
s6, setting a threshold value of the wind speed tester (4);
s7, blowing air to the wind speed tester (4) by using ventilation equipment such as a fan and the like for field debugging, testing the wind speed of the ventilation equipment by holding the wind speed tester, controlling the wind speed above and below a threshold value, testing for multiple times, observing the starting and stopping of the lifting assembly and debugging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210679359.0A CN114999313A (en) | 2022-06-15 | 2022-06-15 | Windproof label and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210679359.0A CN114999313A (en) | 2022-06-15 | 2022-06-15 | Windproof label and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN114999313A true CN114999313A (en) | 2022-09-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210679359.0A Pending CN114999313A (en) | 2022-06-15 | 2022-06-15 | Windproof label and construction method thereof |
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| CN (1) | CN114999313A (en) |
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| CN205376073U (en) * | 2016-01-27 | 2016-07-06 | 嘉兴职业技术学院 | Advertisement frame convenient to dismouting |
| CN206907358U (en) * | 2017-04-10 | 2018-01-19 | 国网浙江省电力公司嘉兴供电公司 | A kind of electric power warning sign fixing rack structure |
| CN109192089A (en) * | 2018-10-18 | 2019-01-11 | 童思家 | A kind of billboard and its application method |
| CN209000457U (en) * | 2018-07-11 | 2019-06-18 | 吉首大学 | A kind of urban planning Multifunction indication board |
| CN209912395U (en) * | 2019-06-17 | 2020-01-07 | 创联芯（厦门）科技有限公司 | Cable operation signboard convenient to adjust |
| CN211654237U (en) * | 2020-04-22 | 2020-10-09 | 成都奔流标识制作有限责任公司 | Wind-resistant advertising board |
| CN212724604U (en) * | 2020-08-28 | 2021-03-16 | 广东早安文化传播有限公司 | Advertising board |
| CN215834220U (en) * | 2021-09-08 | 2022-02-15 | 绍兴壹叁玖文化传媒有限公司 | Outdoor billboard |
| CN215868565U (en) * | 2021-09-26 | 2022-02-18 | 重庆狂印图文广告有限公司 | Upright column billboard |
-
2022
- 2022-06-15 CN CN202210679359.0A patent/CN114999313A/en active Pending
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205376073U (en) * | 2016-01-27 | 2016-07-06 | 嘉兴职业技术学院 | Advertisement frame convenient to dismouting |
| CN206907358U (en) * | 2017-04-10 | 2018-01-19 | 国网浙江省电力公司嘉兴供电公司 | A kind of electric power warning sign fixing rack structure |
| CN209000457U (en) * | 2018-07-11 | 2019-06-18 | 吉首大学 | A kind of urban planning Multifunction indication board |
| CN109192089A (en) * | 2018-10-18 | 2019-01-11 | 童思家 | A kind of billboard and its application method |
| CN209912395U (en) * | 2019-06-17 | 2020-01-07 | 创联芯（厦门）科技有限公司 | Cable operation signboard convenient to adjust |
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| CN215834220U (en) * | 2021-09-08 | 2022-02-15 | 绍兴壹叁玖文化传媒有限公司 | Outdoor billboard |
| CN215868565U (en) * | 2021-09-26 | 2022-02-18 | 重庆狂印图文广告有限公司 | Upright column billboard |
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