CN115178520B - Planar design advertisement display device - Google Patents
Planar design advertisement display device Download PDFInfo
- Publication number
- CN115178520B CN115178520B CN202210908755.6A CN202210908755A CN115178520B CN 115178520 B CN115178520 B CN 115178520B CN 202210908755 A CN202210908755 A CN 202210908755A CN 115178520 B CN115178520 B CN 115178520B
- Authority
- CN
- China
- Prior art keywords
- machine base
- display screen
- swivel
- cleaning
- dust
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Links
- 238000004140 cleaning Methods 0.000 claims abstract description 51
- 239000000428 dust Substances 0.000 claims abstract description 46
- 238000007790 scraping Methods 0.000 claims description 12
- 238000000605 extraction Methods 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 8
- 230000000694 effects Effects 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000005086 pumping Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/30—Cleaning by methods involving the use of tools by movement of cleaning members over a surface
- B08B1/32—Cleaning by methods involving the use of tools by movement of cleaning members over a surface using rotary cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B1/00—Cleaning by methods involving the use of tools
- B08B1/50—Cleaning by methods involving the use of tools involving cleaning of the cleaning members
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B13/00—Accessories or details of general applicability for machines or apparatus for cleaning
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Displays For Variable Information Using Movable Means (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention relates to the technical field of advertisement display, in particular to a plane design advertisement display device, which comprises a machine base, a plurality of universal wheels and a display screen, wherein the universal wheels are movably arranged on the machine base, the display screen is arranged on the machine base, and the display device further comprises: the cleaning module is arranged on the machine base and used for cleaning the display screen; the adjusting component is arranged on the machine base and connected with the universal wheel, and when the cleaning module works, the adjusting component can be controlled to synchronously work and adjust the position of the universal wheel on the machine base; the whole device degree of automation is high, adopts the structure of linkage, not only can realize the clean work in no dead angle to the display screen surface, can also pack up the universal wheel in order to be equipped with the show work in clean display screen moreover, improves the stability of whole device, in addition, can also replace the dust on the staff automatic removal cleaning strip, guarantees that the clean work of next time normally goes on, has reduced the input of labour.
Description
Technical Field
The invention relates to the technical field of advertisement display, in particular to a plane design advertisement display device.
Background
Advertisement propaganda is an important marketing mode, and has electronic propaganda, poster propaganda and the like, wherein the poster propaganda is popular among manufacturers because of low manufacturing cost, convenient propaganda and wide popularity, so the poster propaganda becomes the most common propaganda mode.
Advertisement propaganda is to post propaganda poster on a display device for display, and the general display device mainly comprises a panel and a bracket.
The panel on the existing advertisement display device needs to be cleaned regularly by staff, otherwise, the displayed content is affected by dust and becomes fuzzy easily when the advertisement display device is displayed, manual cleaning is very inconvenient and easy to cause dead angle cleaning, cleaning tools are required to be cleaned after manual cleaning is finished, and a large amount of time is consumed.
Disclosure of Invention
The invention aims to provide a planar design advertisement display device so as to solve the problems in the background technology.
In order to achieve the above purpose, the present invention provides the following technical solutions:
The utility model provides a planar design advertisement display device, includes frame, a plurality of universal wheel and display screen, a plurality of the universal wheel activity sets up on the frame, the display screen sets up on the frame, display device still includes:
the cleaning module is arranged on the machine base and used for cleaning the display screen; and
The adjusting component is arranged on the machine base and connected with the universal wheel, and the cleaning module can control the adjusting component to synchronously work and adjust the position of the universal wheel on the machine base when in work; wherein the method comprises the steps of
The cleaning module includes:
the swivel is movably arranged on the stand, and a handle is arranged on the swivel;
the mounting seat is movably arranged on the swivel;
the mounting bar is hinged with the machine base at one end, and a through hole which is in sliding fit with the other end of the mounting bar is formed in the mounting base; and
And the cleaning strip is arranged on the mounting strip, and the display screen is positioned on the moving path of the cleaning strip.
The application further adopts the technical scheme that: the cleaning module further comprises a dust removing unit which is arranged in the mounting seat and used for removing dust on the cleaning strip.
The application further adopts the technical scheme that: the dust removing unit comprises a dust scraping seat and a dust collecting drawer;
the dust scraping seat is arranged in the through hole and is in sliding fit with the cleaning strip, and the dust collecting drawer is movably arranged in the mounting seat and is positioned on one side of the dust scraping seat.
The application further adopts the technical scheme that: the trigger unit is arranged between the swivel and the stand, the trigger unit is electrically connected with the display screen, and the display screen can be controlled to be opened through the trigger unit when the rotating angle of the swivel reaches a set position.
The application further adopts the technical scheme that: the triggering unit comprises a first conducting strip and a second conducting strip;
The first conductive sheet and the second conductive sheet are respectively arranged on the swivel and the base, and the second conductive sheet is positioned on the moving path of the first conductive sheet and is electrically connected with the display screen.
The application further adopts the technical scheme that: the adjustment assembly includes:
The number of the wheel seats is the same as that of the universal wheels, the wheel seats are movably arranged in guide rails formed on the machine base, and the universal wheels are arranged on the wheel seats;
the hollow tube is arranged on the machine base, a sliding block is movably arranged in the hollow tube and connected with the hollow tube through an elastic piece, and the sliding block is connected with the wheel seat through a sliding rod; and
The air extraction module is arranged on the machine base and connected with the swivel, and can be controlled to synchronously work and extract air in the hollow tube when the swivel moves.
The application further adopts the technical scheme that: the air extraction module comprises a roller, an air extraction box, a piston and a threaded rod;
The roller is movably arranged on the machine base and is in sliding fit with the outer wall of the swivel, the number of the air extracting boxes is a group, the air extracting boxes are symmetrically arranged on two sides of the roller, the air extracting boxes are arranged on the machine base, the air extracting boxes are provided with input holes communicated with the hollow pipes, the pistons are movably arranged in the air extracting boxes, and the threaded rods are movably arranged in the air extracting boxes and are in threaded fit with the pistons.
Compared with the prior art, the technical scheme provided by the embodiment of the invention has the following beneficial effects:
according to the embodiment of the invention, one end of the mounting bar is connected with the machine base, the other end of the mounting bar is movably connected with the mounting base, the positions of the mounting bar and the cleaning bar can be controlled when the swivel is controlled to rotate, the whole device is high in automation degree, a linkage structure is adopted, dead angle-free cleaning work on the surface of the display screen can be realized, the display screen can be cleaned for display work, the universal wheels can be retracted, the stability of the whole device is improved, in addition, dust on the cleaning bar can be automatically removed by replacing workers, the next cleaning work is guaranteed to be normally carried out, and the investment of labor force is reduced.
Drawings
FIG. 1 is a schematic diagram of a planar advertisement display device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a dust removing unit in a planar advertisement display device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a mounting base of a planar advertisement display device according to an embodiment of the present invention;
FIG. 4 is an enlarged schematic view of the structure of the planar advertisement display device according to the embodiment of the present invention;
fig. 5 is a schematic structural diagram of an air extraction module in a planar advertisement display device according to an embodiment of the present invention.
Reference numerals in the schematic drawings illustrate:
1-stand, 2-wheel seat, 3-universal wheel, 4-swivel, 5-handle, 6-conducting strip, 7-conducting strip No. two, 8-installation strip, 9-installation seat, 10-cleaning strip, 11-dust bin, 12-dust scraping seat, 13-perforation, 14-slide bar, 15-slide block, 16-hollow tube, 17-roller, 18-suction box, 19-piston, 20-threaded rod, 21-input hole, 22-guide rail, 23-display screen, 24-spring.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art without making any inventive effort, based on the embodiments of the present invention are within the scope of the present invention, and the present invention is further described below with reference to the embodiments.
Referring to fig. 1-5, in an embodiment of the present application, a planar advertisement display device includes a base 1, a plurality of universal wheels 3, and a display screen 23, wherein the plurality of universal wheels 3 are movably disposed on the base 1, the display screen 23 is disposed on the base 1, and the display device further includes:
the cleaning module is arranged on the machine base 1 and is used for cleaning the display screen 23; and
The adjusting component is arranged on the machine base 1 and connected with the universal wheel 3, and when the cleaning module works, the adjusting component can be controlled to synchronously work and adjust the position of the universal wheel 3 on the machine base 1; wherein the method comprises the steps of
The cleaning module includes:
the swivel 4 is movably arranged on the stand 1, and a handle 5 is arranged on the swivel 4;
the mounting seat 9 is movably arranged on the swivel 4;
The mounting strip 8, one end of the mounting strip 8 is hinged with the machine base 1, and a through hole 13 which is in sliding fit with the other end of the mounting strip 8 is formed in the mounting seat 9; and
A cleaning strip 10 is arranged on the mounting strip 8, and the display screen 23 is positioned on the moving path of the cleaning strip 10.
In a specific case of this embodiment, the cleaning module further comprises a dust removing unit, provided in the mounting 9, for removing dust from the cleaning strip 10.
In another specific case of the present embodiment, the dust removing unit includes a dust scraping seat 12 and a dust collecting drawer 11;
The dust scraping seat 12 is arranged in the perforation 13 and is in sliding fit with the cleaning strip 10, and the dust collecting drawer 11 is movably arranged in the mounting seat 9 and is positioned on one side of the dust scraping seat 12.
The whole device is moved into a display area through the universal wheel 3, before the display screen 23 is opened, a worker rotates clockwise through the handle 5 to control the swivel 4 as shown in fig. 1, so that the positions of the mounting strip 8 and the cleaning strip 10 are changed, the cleaning strip 10 can sweep the surface of the display screen 23, dust on the surface of the display screen 23 is swept, the cleaning work on the surface of the display screen 23 is realized, the synchronous work of the adjusting component can be controlled while the swivel 4 is controlled to rotate clockwise, the universal wheel 3 is retracted and separated from the ground, the stability in the advertising display process of the whole device is ensured, the handle 5 drives the swivel 4 to rotate anticlockwise after the display work is finished, the mounting seat 9 reaches the leftmost side of the base 1 from the rightmost side of the base 1, the dust scraping seat 12 can be utilized to scrape the dust attached on the surface of the cleaning strip 10 in the process, the dust finally falls in the dust collecting bin 11, the whole device is high in degree of automation, the linkage structure is adopted, the cleaning work on the surface of the display screen 23 is not only realized, the cleaning work can be realized, the whole device can be automatically carried out, the dust can be removed by the clean work can be replaced by the clean the whole device, and the dust can be simultaneously, the dust can be removed by the normal operation of the display device is guaranteed, and the normal work of the dust can be removed by the workers can be simultaneously, and the dust can be removed by the device can be guaranteed, and the normal work can be conveniently and the clean by conveniently and can be conveniently replaced.
Referring to fig. 1, as another preferred embodiment of the present application, a trigger unit is disposed between the swivel 4 and the stand 1, the trigger unit is electrically connected to the display screen 23, and the display screen 23 can be controlled to be opened by the trigger unit when the rotation angle of the swivel 4 reaches the set position.
In this embodiment, the triggering unit includes a first conductive sheet 6 and a second conductive sheet 7;
the first conductive sheet 6 and the second conductive sheet 7 are respectively arranged on the swivel 4 and the base 1, and the second conductive sheet 7 is positioned on the moving path of the first conductive sheet 6, and the first conductive sheet 6, the second conductive sheet 7 and the display screen 23 are electrically connected.
Of course, the triggering unit in the present embodiment is not limited to the above-mentioned mechanical replacement structure, and the position of the handle 5 on the base 1 may be monitored by using an infrared ranging sensor or a laser ranging sensor, which is not illustrated herein.
When the swivel 4 is rotated clockwise to a set position through the handle 5, namely, when the cleaning strip 10 completely cleans the surface of the display screen 23, the first conductive sheet 6 and the second conductive sheet 7 are contacted at the moment, so that the display screen 23 is triggered to be electrified and the advertisement display is performed.
Referring to fig. 1, 4 and 5, as another preferred embodiment of the present application, the adjusting assembly includes:
the number of the wheel seats 2 is the same as that of the universal wheels 3, the wheel seats 2 are movably arranged in guide rails 22 formed on the machine base 1, and the universal wheels 3 are arranged on the wheel seats 2;
The hollow tube 16 is arranged on the machine base 1, a sliding block 15 is movably arranged in the hollow tube 16 and connected with the hollow tube through an elastic piece, and the sliding block 15 is connected with the wheel seat 2 through a sliding rod 14; and
The air extraction module is arranged on the machine base 1 and connected with the swivel 4, and the swivel 4 can control the air extraction module to synchronously work and extract air in the hollow tube 16 when in motion.
It should be noted that the elastic member may be a spring 24, a spring plate or an elastic steel plate, and in this embodiment, the elastic member is preferably a spring 24, and the spring 24 is connected between the slider 15 and the hollow tube 16, and the specific model parameter of the spring 24 is not specifically limited herein.
In the present embodiment, the pumping module includes a roller 17, a pumping chamber 18, a piston 19, and a threaded rod 20;
The roller 17 is movably arranged on the machine base 1 and is in sliding fit with the outer wall of the swivel 4, the number of the air extracting boxes 18 is one group, the air extracting boxes 18 are symmetrically arranged on two sides of the roller 17, the air extracting boxes 18 are arranged on the machine base 1, an input hole 21 communicated with the hollow tube 16 is formed in the air extracting boxes 18, the piston 19 is movably arranged in the air extracting boxes 18, and the threaded rod 20 is movably arranged in the air extracting boxes 18 and is in threaded fit with the piston 19.
When the swivel 4 rotates clockwise in the direction shown in fig. 1, the roller 17 and the threaded rod 20 can be driven to rotate under the action of friction resistance between the swivel 4 and the roller 17, the piston 19 can be driven to move towards the roller 17 in the direction shown in fig. 5 under the action of friction resistance between the threaded rod 20 and the piston 19, so that air in the hollow tube 16 is pumped into the extraction box 18 along the input hole 21, the sliding block 15 moves in the hollow tube 16, the wheel seat 2 and the universal wheel 3 can be driven to be retracted into the machine seat 1 under the action of the sliding rod 14, and instability of the whole device caused by the universal wheel 3 in the process of advertisement display by using the display screen 23 is avoided.
The working principle of the application is as follows:
Through universal wheel 3 with whole device remove the show area in, the staff is before opening display screen 23, rotate clockwise as shown in fig. 1 through handle 5 control swivel 4 to drive the position of installation strip 8 and clean strip 10 and change, clean strip 10 can sweep on the surface of display screen 23, thereby sweep the dust on display screen 23 surface, realize the clean work to the surface of display screen 23, when rotating swivel 4 clockwise through handle 5 and presuming the position, clean strip 10 carries out complete clean work to the surface of display screen 23, contact between No. one conducting strip 6 and No. two conducting strips 7 this moment, trigger the work that display screen 23 circular telegram was worked and advertisement show is carried out. When the swivel 4 rotates clockwise in the direction shown in fig. 1, the roller 17 and the threaded rod 20 can be driven to rotate under the action of friction resistance between the swivel 4 and the roller 17, the piston 19 can be driven to move towards the roller 17 in the direction shown in fig. 5 under the action of friction resistance between the threaded rod 20 and the piston 19, so that air in the hollow tube 16 is pumped into the extraction box 18 along the input hole 21, the sliding block 15 moves in the hollow tube 16, the wheel seat 2 and the universal wheel 3 can be driven to be retracted into the machine seat 1 under the action of the sliding rod 14, and instability of the whole device caused by the universal wheel 3 in the process of advertisement display by using the display screen 23 is avoided. After the display work is finished, the rotating ring 4 is driven to rotate anticlockwise through the handle 5, the mounting seat 9 reaches the leftmost side of the machine base 1 from the rightmost side of the machine base 1, dust attached to the surface of the cleaning strip 10 can be scraped by the dust scraping seat 12 in the process, the final dust falls into the dust collecting drawer 11, the automation degree of the whole device is high, a linkage structure is adopted, dead-angle-free cleaning work on the surface of the display screen 23 can be realized, the display screen 23 can be cleaned, the universal wheels 3 can be retracted when the display work is prepared, the stability of the whole device is improved, in addition, the dust on the cleaning strip 10 can be automatically removed by replacing workers, the next cleaning work is guaranteed to be normally carried out, and the investment of labor force is reduced.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.
Claims (2)
1. The utility model provides a planar design advertisement display device, includes frame, a plurality of universal wheel and display screen, a plurality of the universal wheel activity sets up on the frame, the display screen sets up on the frame, its characterized in that, display device still includes:
the cleaning module is arranged on the machine base and used for cleaning the display screen; and
The adjusting component is arranged on the machine base and connected with the universal wheel, and the cleaning module can control the adjusting component to synchronously work and adjust the position of the universal wheel on the machine base when in work; wherein the method comprises the steps of
The cleaning module includes:
the swivel is movably arranged on the stand, and a handle is arranged on the swivel;
the mounting seat is movably arranged on the swivel;
the mounting bar is hinged with the machine base at one end, and a through hole which is in sliding fit with the other end of the mounting bar is formed in the mounting base; and
The cleaning strip is arranged on the mounting strip, and the display screen is positioned on the moving path of the cleaning strip;
the cleaning module further comprises a dust removing unit which is arranged in the mounting seat and used for removing dust on the cleaning strip; the dust removing unit comprises a dust scraping seat and a dust collecting drawer; the dust scraping seat is arranged in the through hole and is in sliding fit with the cleaning strip, and the dust collecting drawer is movably arranged in the mounting seat and is positioned at one side of the dust scraping seat;
A trigger unit is arranged between the swivel and the stand, the trigger unit is electrically connected with the display screen, and the display screen can be controlled to be opened through the trigger unit when the rotating angle of the swivel reaches a set position;
The triggering unit comprises a first conducting strip and a second conducting strip; the first conductive sheet and the second conductive sheet are respectively arranged on the swivel and the base, and the second conductive sheet is positioned on the moving path of the first conductive sheet and is electrically connected with the display screen;
The adjustment assembly includes:
The number of the wheel seats is the same as that of the universal wheels, the wheel seats are movably arranged in guide rails formed on the machine base, and the universal wheels are arranged on the wheel seats;
the hollow tube is arranged on the machine base, a sliding block is movably arranged in the hollow tube and connected with the hollow tube through an elastic piece, and the sliding block is connected with the wheel seat through a sliding rod; and
The air extraction module is arranged on the machine base and connected with the swivel, and can be controlled to synchronously work and extract air in the hollow tube when the swivel moves.
2. The flat design advertisement display device according to claim 1, wherein the air extraction module comprises a roller, an air extraction box, a piston and a threaded rod;
The roller is movably arranged on the machine base and is in sliding fit with the outer wall of the swivel, the number of the air extracting boxes is a group, the air extracting boxes are symmetrically arranged on two sides of the roller, the air extracting boxes are arranged on the machine base, the air extracting boxes are provided with input holes communicated with the hollow pipes, the pistons are movably arranged in the air extracting boxes, and the threaded rods are movably arranged in the air extracting boxes and are in threaded fit with the pistons.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210908755.6A CN115178520B (en) | 2022-07-30 | 2022-07-30 | Planar design advertisement display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210908755.6A CN115178520B (en) | 2022-07-30 | 2022-07-30 | Planar design advertisement display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115178520A CN115178520A (en) | 2022-10-14 |
| CN115178520B true CN115178520B (en) | 2024-05-31 |
Family
ID=83521736
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210908755.6A Active CN115178520B (en) | 2022-07-30 | 2022-07-30 | Planar design advertisement display device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115178520B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09158133A (en) * | 1995-12-05 | 1997-06-17 | Azuma Shokai:Kk | Cleaning device of display board |
| CN208077526U (en) * | 2018-04-12 | 2018-11-09 | 深圳市华安盛泰科技有限公司 | A kind of rotational display screen |
| CN109147594A (en) * | 2018-09-17 | 2019-01-04 | 北海华源电子有限公司 | Can automated cleaning outdoor electronic display device |
| CN109712524A (en) * | 2019-02-18 | 2019-05-03 | 长沙伯劳智能科技有限公司 | A kind of electronic bill-board dust cleaning plant |
| CN214226356U (en) * | 2021-03-01 | 2021-09-17 | 琼台师范学院 | Adjustable exhibitions advertisement show screen |
| CN113689783A (en) * | 2021-09-01 | 2021-11-23 | 江西交通职业技术学院 | A display device for ideology and politics |
-
2022
- 2022-07-30 CN CN202210908755.6A patent/CN115178520B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09158133A (en) * | 1995-12-05 | 1997-06-17 | Azuma Shokai:Kk | Cleaning device of display board |
| CN208077526U (en) * | 2018-04-12 | 2018-11-09 | 深圳市华安盛泰科技有限公司 | A kind of rotational display screen |
| CN109147594A (en) * | 2018-09-17 | 2019-01-04 | 北海华源电子有限公司 | Can automated cleaning outdoor electronic display device |
| CN109712524A (en) * | 2019-02-18 | 2019-05-03 | 长沙伯劳智能科技有限公司 | A kind of electronic bill-board dust cleaning plant |
| CN214226356U (en) * | 2021-03-01 | 2021-09-17 | 琼台师范学院 | Adjustable exhibitions advertisement show screen |
| CN113689783A (en) * | 2021-09-01 | 2021-11-23 | 江西交通职业技术学院 | A display device for ideology and politics |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115178520A (en) | 2022-10-14 |
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