CN113436557A - Adjustable publicity column - Google Patents
Adjustable publicity column Download PDFInfo
- Publication number
- CN113436557A CN113436557A CN202110844919.9A CN202110844919A CN113436557A CN 113436557 A CN113436557 A CN 113436557A CN 202110844919 A CN202110844919 A CN 202110844919A CN 113436557 A CN113436557 A CN 113436557A
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- Prior art keywords
- gear
- fixedly connected
- adjustable
- base
- rotating shaft
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- 230000001360 synchronised effect Effects 0.000 claims description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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Classifications
-
- 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
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B19/00—Teaching not covered by other main groups of this subclass
-
- 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
- G09F2015/0093—Tensioned structures
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- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Entrepreneurship & Innovation (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The invention relates to the technical field related to propaganda and education, and discloses an adjustable publicity column, which comprises a base, wherein a driving box is arranged in the base, and the adjustable publicity column further comprises: the display mechanism can clamp and display pages, posters and the like with propaganda and education contents to be displayed through the arrangement of the clamping component after being unfolded, the unfolding amplitude of the display mechanism can be freely adjusted according to the factors such as the size of the environment, the number of the displayed contents and the like, and the height and the angle of the device can be adjusted through the arrangement of the position adjusting mechanism, so that the practicability of the device is greatly improved.
Description
Technical Field
The invention relates to the technical field related to propaganda and education, in particular to an adjustable publicity column.
Background
The publicity column is used as a tool for ground publicity and popularization, and is widely applied to various scenes such as streets, schools, communities and the like. The display area of the traditional publicity column is fixed, the display area can not be adjusted according to different use scenes, and the practicability is low, so that an adjustable publicity column for publicity and education is required to be designed to solve the problems.
Disclosure of Invention
The present invention is directed to an adjustable bulletin board, which solves the above problems.
In order to achieve the purpose, the invention provides the following technical scheme:
the utility model provides a publicity column with adjustable, includes the base, is provided with the drive case in the base, still includes:
the device comprises a position adjusting mechanism arranged in a driving box, wherein the position adjusting mechanism comprises a rotating shaft arranged in the driving box, the rotating shaft is connected with a rotating adjusting assembly arranged in the driving box, the rotating adjusting assembly is connected with a height adjusting assembly, the rotating adjusting assembly is used for adjusting the display angle of the device, and the height adjusting assembly is used for adjusting the height of the device;
the show mechanism of connection on position adjustment mechanism, show mechanism opens the subassembly including connecting the screw drive subassembly on position adjustment mechanism, connects the synchronization on screw drive subassembly to and connect the clamping component who opens the subassembly in step, show mechanism opens the subassembly through screw drive subassembly drive synchronization and expandes, and after the expansion, show mechanism presss from both sides tightly and demonstrates the propaganda education content of required show through clamping component's setting.
As a further scheme of the invention: the height adjusting assembly comprises a lifting rod arranged on one side of the base, a threaded hole is formed in one end, close to the base, of the lifting rod, one end of the rotating shaft penetrates through a first stud fixedly connected with the base, the first stud is connected into the threaded hole in a threaded mode, the two sides of the lifting rod are connected with axial fixing portions, a gear driving portion is connected to the rotating shaft, the axial fixing portions are used for axially fixing the lifting rod, and the gear driving portion is used for driving the rotating shaft to rotate.
As a further scheme of the invention: the axial fixing part comprises a sliding connecting cylinder fixedly connected to two sides of the outer wall of one end, close to the base, of the lifting rod, one end of a first sliding rod is connected to the sliding connecting cylinder in a sliding mode, and the other end of the first sliding rod is fixedly connected to the rotation adjusting assembly.
As a further scheme of the invention: the rotation adjusting assembly comprises a second motor fixedly connected to the base, a fourth gear is fixedly connected to an output shaft of the second motor, a third gear is arranged on one side of the fourth gear and is meshed with the fourth gear, the third gear is rotatably connected to the rotating shaft, and the first sliding rod is fixedly connected to the third gear.
As a further scheme of the invention: the gear driving part comprises a first motor connected to the third gear, an output shaft of the first motor penetrates through the third gear and is fixedly connected with a second gear, a first gear is arranged on one side of the second gear, the first gear is fixedly connected to the rotating shaft, and the first gear is meshed with the second gear.
As a further scheme of the invention: the screw rod drive assembly comprises a sliding connection cylinder fixedly connected to the lifting rod and far away from one end of the base, a double-threaded screw rod is connected to the sliding connection cylinder in a rotating mode, a driving block is connected to the two ends of the double-threaded screw rod in a threaded mode, one end of the double-threaded screw rod penetrates through a rocker arm fixedly connected with the sliding connection cylinder, and a handle is connected to the rocker arm.
As a further scheme of the invention: the synchronous opening assembly comprises a plurality of groups of notches formed in the outer wall of the sliding connection barrel, the driving block is connected in the notches in a sliding mode, the driving block penetrates through the plurality of groups of notches to rotate and is connected with one end of a plurality of groups of connecting rods, the other end of each group of connecting rods is connected with a side plate in a rotating mode, two ends of two sides of each side plate are connected with one end of a first supporting rod in a rotating mode, the other end of each first supporting rod is connected with one end of a second supporting rod in a rotating mode, and the other end of each second supporting rod is connected to an adjacent group of side plates in a rotating mode.
As a further scheme of the invention: the clamping assembly comprises second sliding rods fixedly connected to the two ends of the side edge plate, clamping plates are connected to the second sliding rods in a sliding mode, springs are arranged on one sides, far away from the side edge plate, of the clamping plates, and the springs are sleeved on the second sliding rods.
As a still further scheme of the invention: the outer wall of the rotary connecting cylinder is connected with a lamp tube.
Compared with the prior art, the invention has the beneficial effects that: according to the invention, the propaganda content is displayed through the arrangement of the display mechanism, the display mechanism drives the synchronous opening assembly to expand through the screw driving assembly, after expansion, the display mechanism clamps and displays pages, posters and the like with propaganda and education content to be displayed through the arrangement of the clamping assembly, the display mechanism can freely adjust the expansion amplitude of the display mechanism according to the factors such as the size of the environment, the quantity of the displayed content and the like, and the height and the angle of the device can be adjusted through the arrangement of the position adjusting mechanism, so that the practicability of the device is greatly improved.
Drawings
FIG. 1 is a schematic view of an adjustable bulletin board of the present invention.
FIG. 2 is a front view of an adjustable billboard of the invention.
FIG. 3 is a front sectional view of an adjustable bulletin board of the present invention.
FIG. 4 is a side sectional view of an adjustable billboard of the invention.
FIG. 5 is a top sectional view of an adjustable billboard of the invention.
In the figure: 1-base, 2-driving box, 3-rotating shaft, 4-first gear, 5-second gear, 6-first motor, 7-third gear, 8-fourth gear, 9-second motor, 10-lifting rod, 11-threaded hole, 12-first stud, 13-sliding connecting cylinder, 14-first slide rod, 15-rotating connecting cylinder, 16-double-threaded screw, 17-driving block, 18-notch, 19-connecting rod, 20-side plate, 21-first supporting rod, 22-second supporting rod, 23-rocker arm, 24-handle, 25-second slide rod, 26-clamping plate, 27-spring, 28-lamp tube, 29-position adjusting mechanism, 30-rotation adjusting component, 31-height adjustment assembly, 32-axial fixing part, 33-gear driving part, 34-display mechanism, 35-screw driving assembly, 36-synchronous opening assembly and 37-clamping assembly.
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 obtained by a person skilled in the art without making any inventive step based on the embodiments of the present invention shall fall within the scope of protection of the present invention, and the present invention shall be described in detail with reference to the accompanying drawings and embodiments.
Referring to fig. 1 to 5, in an embodiment of the present invention, an adjustable bulletin board includes a base 1, a driving box 2 is disposed in the base 1, and the bulletin board further includes: the position adjusting mechanism 29 is arranged in the driving box 2, the position adjusting mechanism 29 comprises a rotating shaft 3 arranged in the driving box 2, the rotating shaft 3 is connected with a rotating adjusting component 30 arranged in the driving box 2, and the rotating adjusting component 30 is connected with a height adjusting component 31; a display mechanism 34 connected to the position adjustment mechanism 29, said display mechanism 34 comprising a screw drive assembly 35 connected to the position adjustment mechanism 29, a simultaneous expansion assembly 36 connected to the screw drive assembly 35, and a clamping assembly 37 connected to the synchronized opening assembly 36, the present invention displays promotional content through the provision of the display mechanism 34, the display mechanism 34 is deployed by a screw drive assembly 35 driving a simultaneous deployment assembly 36 which, after deployment, the display mechanism 34 clamps and displays the pages, posters and the like with propaganda and education contents to be displayed through the arrangement of the clamping component 37, the display mechanism 34 can freely adjust the expansion amplitude of the display mechanism 34 according to the size of the environment and the amount of the displayed contents, and the height and the angle of the device can be adjusted by arranging the position adjusting mechanism 29.
In a case of this embodiment, please refer to fig. 3 and 4, the height adjusting assembly 31 includes a lifting rod 10 disposed on one side of the base 1, a threaded hole 11 is disposed in one end of the lifting rod 10 close to the base 1, one end of the rotating shaft 3 passes through a first stud 12 fixedly connected to the base 1, the first stud 12 is screwed in the threaded hole 11, two sides of the lifting rod 10 are connected with axial fixing portions 32, a gear driving portion 33 is connected to the rotating shaft 3, the height adjusting assembly 31 axially fixes the lifting rod 10 through the axial fixing portions 32, and drives the rotating shaft 3 to rotate through the gear driving portion 33, the rotating shaft 3 drives the first stud 12 to rotate, and the first stud 12 drives the lifting rod 10 to lift through a threaded connection with the threaded hole 11.
In one aspect of this embodiment, referring to fig. 3, the axial fixing portion 32 includes a sliding connecting cylinder 13 fixedly connected to two sides of an outer wall of the lifting rod 10 near one end of the base 1, one end of a first sliding rod 14 is slidably connected to the sliding connecting cylinder 13, the other end of the first sliding rod 14 is fixedly connected to the rotation adjusting assembly 30, and the axial fixing portion 32 axially fixes the lifting rod 10 relative to the rotation adjusting assembly 30 through the sliding connection between the first sliding rod 14 and the sliding connecting cylinder 13.
In one aspect of this embodiment, referring to fig. 4, the rotation adjusting assembly 30 includes a second motor 9 fixedly connected to the base 1, a fourth gear 8 is fixedly connected to an output shaft of the second motor 9, a third gear 7 is disposed on one side of the fourth gear 8, the third gear 7 is engaged with the fourth gear 8, the third gear 7 is rotatably connected to the rotating shaft 3, the first sliding rod 14 is fixedly connected to the third gear 7, the rotation adjusting assembly 30 drives the fourth gear 8 to rotate through the second motor 9, the fourth gear 8 drives the third gear 7 to rotate through engagement with the third gear 7, the third gear 7 drives the first sliding rod 14 to axially rotate, and the first sliding rod 14 drives the lifting rod 10 to rotate through the sliding connecting cylinder 13, so as to adjust the display angle of the apparatus.
In a situation of this embodiment, please refer to fig. 4, the gear driving portion 33 includes a first motor 6 connected to a third gear 7, an output shaft of the first motor 6 passes through the third gear 7 and is fixedly connected to a second gear 5, a first gear 4 is disposed on one side of the second gear 5, the first gear 4 is fixedly connected to a rotating shaft 3, the first gear 4 and the second gear 5 are engaged with each other, the gear driving portion 33 drives the second gear 5 to rotate through the first motor 6, the second gear 5 drives the first gear 4 to rotate through engagement with the first gear 4, and the first gear 4 drives the rotating shaft 3 to rotate.
In a case of this embodiment, please refer to fig. 4, the screw driving assembly 35 includes a rotary connecting cylinder 15 fixedly connected to one end of the lifting rod 10 far from the base 1, a double-threaded screw 16 is rotatably connected in the rotary connecting cylinder 15, driving blocks 17 are respectively connected to two ends of the double-threaded screw 16 in a threaded manner, one end of the double-threaded screw 16 passes through the rotary connecting cylinder 15 and is fixedly connected with a rocker arm 23, a handle 24 is connected to the rocker arm 23, the screw driving assembly 35 drives the rocker arm 23 to rotate by shaking the handle 24, the rocker arm 23 drives the double-threaded screw 16 to rotate, and the double-threaded screw 16 drives the driving blocks 17 to move by being connected with threads of the driving blocks 17.
In one aspect of this embodiment, referring to fig. 2 and 3, the synchronous opening assembly 36 includes a plurality of notches 18 disposed on an outer wall of the rotary connecting cylinder 15, the driving block 17 is slidably connected in the notches 18, the driving block 17 passes through the plurality of notches 18 and is rotatably connected with one end of a plurality of connecting rods 19, the other end of each connecting rod 19 is rotatably connected with a side plate 20, two ends of each side plate 20 are rotatably connected with one end of a first supporting rod 21, the other end of the first supporting rod 21 is rotatably connected with one end of a second supporting rod 22, the other end of the second supporting rod 22 is rotatably connected to an adjacent side plate 20, the synchronous opening assembly 36 drives the connecting rods 19 to rotate by the movement of the driving block 17, the connecting rods 19 drive the side plates 20 to extend, and the distance between two adjacent side plates 20 increases while the side plates 20 extend, and drives the first support bar 21 and the second support bar 22 to open to support and fix the two adjacent sets of side plates 20.
In one aspect of this embodiment, referring to fig. 5, the clamping assembly 37 includes a second sliding rod 25 fixedly connected to two ends of the side board 20, a clamping plate 26 is slidably connected to the second sliding rod 25, a spring 27 is disposed on a side of the clamping plate 26 away from the side board 20, the spring 27 is sleeved on the second sliding rod 25, when the clamping assembly 37 clamps the advertisement content, the clamping plate 26 can be lifted to place one side of the advertisement content between the side board 20 and the clamping plate 26, the clamping plate 26 is released, and the clamping plate 26 clamps the advertisement content under the action of the spring 27.
In a case of this embodiment, please refer to fig. 4, the outer wall of the rotary connecting cylinder 15 is connected with a lamp tube 28, the lamp tube 28 is arranged to supplement light to the display content when the light is weak, so that the reader can read the display content conveniently, the propaganda ability of the device is enhanced, and meanwhile, the lamp tube 28 can be opened at night to be used as a street lamp, thereby improving the practicability of the device.
The working principle of the invention is as follows: the invention can drive the rocker arm 23 to rotate by shaking the handle 24, the rocker arm 23 drives the double-head screw 16 to rotate, the double-head screw 16 drives the driving block 17 to move by being connected with the thread of the driving block 17, the driving block 17 drives the connecting rod 19 to rotate, the connecting rod 19 drives the side plates 20 to extend, when the side plates 20 extend, the distance between two adjacent groups of side plates 20 is increased, and drives the first supporting rod 21 and the second supporting rod 22 to open and support and fix the two adjacent groups of side plates 20, the device is unfolded, after the unfolding, one side of the propaganda content can be placed between the side plates 20 and the clamping plate 26 by lifting the clamping plate 26, the clamping plate 26 clamps the propaganda content under the action of the spring 27, namely, the exhibition of the propaganda content is completed, and simultaneously the device can drive the fourth gear 8 to rotate by the second motor 9, the fourth gear 8 drives the third gear 7 to rotate through meshing with the third gear 7, the third gear 7 drives the first slide rod 14 to axially rotate, the first slide rod 14 drives the lifting rod 10 to rotate through the sliding connecting cylinder 13, the display angle of the device is adjusted, the second gear 5 can also be driven to rotate through the first motor 6, the second gear 5 drives the first gear 4 to rotate through meshing with the first gear 4, the first gear 4 drives the rotating shaft 3 to rotate, the rotating shaft 3 drives the first stud 12 to rotate, the first stud 12 drives the lifting rod 10 to lift through threaded connection with the threaded hole 11, and then the display height of the device is adjusted.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a publicity column with adjustable, includes the base, its characterized in that is provided with the drive case in the base, still includes:
the device comprises a position adjusting mechanism arranged in a driving box, wherein the position adjusting mechanism comprises a rotating shaft arranged in the driving box, the rotating shaft is connected with a rotating adjusting assembly arranged in the driving box, the rotating adjusting assembly is connected with a height adjusting assembly, the rotating adjusting assembly is used for adjusting the display angle of the device, and the height adjusting assembly is used for adjusting the height of the device;
the show mechanism of connection on position adjustment mechanism, show mechanism opens the subassembly including connecting the screw drive subassembly on position adjustment mechanism, connects the synchronization on screw drive subassembly to and connect the clamping component who opens the subassembly in step, show mechanism opens the subassembly through screw drive subassembly drive synchronization and expandes, and after the expansion, show mechanism presss from both sides tightly and demonstrates the propaganda education content of required show through clamping component's setting.
2. The adjustable bulletin board as claimed in claim 1, wherein the height adjustment assembly comprises a lifting rod disposed at one side of the base, a threaded hole is disposed in an end of the lifting rod close to the base, one end of the rotating shaft passes through the base and is fixedly connected with a first stud, the first stud is screwed into the threaded hole, axial fixing portions are connected to two sides of the lifting rod, a gear driving portion is connected to the rotating shaft, the axial fixing portions are used for axially fixing the lifting rod, and the gear driving portion is used for driving the rotating shaft to rotate.
3. The adjustable bulletin board as claimed in claim 2, wherein the axial fixing part comprises a sliding connecting cylinder fixedly connected to two sides of an outer wall of the lifting rod near one end of the base, one end of a first sliding rod is slidably connected to the sliding connecting cylinder, and the other end of the first sliding rod is fixedly connected to the rotation adjusting assembly.
4. The adjustable bulletin board as claimed in claim 3, wherein the rotation adjusting assembly comprises a second motor fixedly connected to the base, a fourth gear is fixedly connected to an output shaft of the second motor, a third gear is disposed on one side of the fourth gear, the third gear is engaged with the fourth gear, the third gear is rotatably connected to the rotating shaft, and the first slide rod is fixedly connected to the third gear.
5. The adjustable bulletin board as claimed in claim 4, wherein the gear driving part comprises a first motor connected to a third gear, an output shaft of the first motor passes through the third gear and is fixedly connected to a second gear, a first gear is disposed on one side of the second gear, the first gear is fixedly connected to the rotating shaft, and the first gear and the second gear are engaged with each other.
6. The adjustable publicity column of claim 2, characterized in that, the screw drive subassembly includes the rotation connecting cylinder of fixed connection on the lifter is kept away from the base one end, rotates in the connecting cylinder and is connected with double-threaded screw, and the equal threaded connection in double-threaded screw both ends has the drive block, the one end of double-threaded screw passes rotation connecting cylinder fixedly connected with rocking arm, is connected with the handle on the rocking arm.
7. The adjustable billboard of claim 6, wherein the synchronous opening assembly comprises a plurality of sets of notches formed in an outer wall of the rotary connecting cylinder, the driving block is slidably connected in the notches, the driving block passes through the plurality of sets of notches to rotatably connect with one end of a plurality of sets of connecting rods, the other end of each set of connecting rods is rotatably connected with a side plate, two side ends of the side plate are rotatably connected with one end of a first supporting rod, the other end of the first supporting rod is rotatably connected with one end of a second supporting rod, and the other end of the second supporting rod is rotatably connected with an adjacent set of side plate.
8. The adjustable billboard of claim 7, wherein the clamping assembly comprises a second slide bar fixedly connected to the two ends of the side panel, a clamping plate is slidably connected to the second slide bar, a spring is disposed on a side of the clamping plate away from the side panel, and the spring is sleeved on the second slide bar.
9. The adjustable bulletin board as claimed in claim 6, wherein a lamp is connected to an outer wall of the rotary connecting cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844919.9A CN113436557A (en) | 2021-07-26 | 2021-07-26 | Adjustable publicity column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110844919.9A CN113436557A (en) | 2021-07-26 | 2021-07-26 | Adjustable publicity column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113436557A true CN113436557A (en) | 2021-09-24 |
Family
ID=77761844
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110844919.9A Pending CN113436557A (en) | 2021-07-26 | 2021-07-26 | Adjustable publicity column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113436557A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101574920A (en) * | 2009-03-11 | 2009-11-11 | 何国苗 | Car tent topee automatically supported, folded and unfolded by micro machine |
| US20090294622A1 (en) * | 2008-05-29 | 2009-12-03 | Neil Medders | Portable drink stand |
| CN201749645U (en) * | 2010-06-13 | 2011-02-16 | 上海工程技术大学 | Umbrella-shaped display plate |
| CN203415195U (en) * | 2013-09-05 | 2014-01-29 | 董伊一 | Umbrella type poster |
| CN107134197A (en) * | 2017-06-24 | 2017-09-05 | 胡菊兰 | A kind of adjustable display device for biological teaching |
| US20190037985A1 (en) * | 2017-08-07 | 2019-02-07 | Linhai Zhongtian Electronic Appliance CO.,Ltd | Intelligent outdoor umbrella |
| CN210353523U (en) * | 2019-05-07 | 2020-04-21 | 晋江闽华伞业有限公司 | Advertisement umbrella convenient to remove |
| CN112331096A (en) * | 2020-11-03 | 2021-02-05 | 宋彩玲 | Psychological education display device |
-
2021
- 2021-07-26 CN CN202110844919.9A patent/CN113436557A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090294622A1 (en) * | 2008-05-29 | 2009-12-03 | Neil Medders | Portable drink stand |
| CN101574920A (en) * | 2009-03-11 | 2009-11-11 | 何国苗 | Car tent topee automatically supported, folded and unfolded by micro machine |
| CN201749645U (en) * | 2010-06-13 | 2011-02-16 | 上海工程技术大学 | Umbrella-shaped display plate |
| CN203415195U (en) * | 2013-09-05 | 2014-01-29 | 董伊一 | Umbrella type poster |
| CN107134197A (en) * | 2017-06-24 | 2017-09-05 | 胡菊兰 | A kind of adjustable display device for biological teaching |
| US20190037985A1 (en) * | 2017-08-07 | 2019-02-07 | Linhai Zhongtian Electronic Appliance CO.,Ltd | Intelligent outdoor umbrella |
| CN210353523U (en) * | 2019-05-07 | 2020-04-21 | 晋江闽华伞业有限公司 | Advertisement umbrella convenient to remove |
| CN112331096A (en) * | 2020-11-03 | 2021-02-05 | 宋彩玲 | Psychological education display device |
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Application publication date: 20210924 |
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| RJ01 | Rejection of invention patent application after publication |