CN110895900A - Electronic billboard - Google Patents
Electronic billboard Download PDFInfo
- Publication number
- CN110895900A CN110895900A CN201811065054.0A CN201811065054A CN110895900A CN 110895900 A CN110895900 A CN 110895900A CN 201811065054 A CN201811065054 A CN 201811065054A CN 110895900 A CN110895900 A CN 110895900A
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- CN
- China
- Prior art keywords
- electronic billboard
- box
- shell
- fixedly connected
- electronic
- 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.)
- Pending
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- 239000000428 dust Substances 0.000 claims abstract description 27
- 230000007246 mechanism Effects 0.000 claims abstract description 24
- 238000012423 maintenance Methods 0.000 claims abstract description 18
- 238000004804 winding Methods 0.000 claims description 12
- 238000006073 displacement reaction Methods 0.000 claims description 11
- 230000001681 protective effect Effects 0.000 claims description 7
- 238000005286 illumination Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 230000000694 effects Effects 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
Landscapes
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Illuminated Signs And Luminous Advertising (AREA)
Abstract
The invention discloses an electronic billboard, which comprises an electronic billboard shell, wherein a display screen is fixedly arranged on the outer surface of the front section of the electronic billboard shell, a sliding rail and a sliding rod are fixedly arranged on the outer surface of the upper end of the electronic billboard shell, the sliding rail is positioned at the lower end of the sliding rod, an overhaul standby box is fixedly arranged on the outer surface of the lower end of the electronic billboard shell, a flat cable classifying rod and a tool storage box are arranged inside the overhaul standby box, the flat cable classifying rod is positioned at the upper end of the tool storage box, a classifying disc is fixedly arranged on the outer surface of the flat cable classifying rod, and a fixed base is fixedly arranged on the outer surface of the lower end of the overhaul standby box. The electronic billboard is convenient for people to maintain in time when the electronic billboard breaks down by overhauling the spare box, can provide illumination conditions for workers in the maintenance process by the illumination mechanism, and can be convenient for people to clean dust in the screen by the dust box.
Description
Technical Field
The invention relates to the field of electronic billboards, in particular to an electronic billboard.
Background
The electronic advertisement is a form that electronic media information is transmitted through the advertisement, the transmission mode is simple, and the electronic advertisement is convenient for people to watch, and along with the development of science and technology, more and more electronic billboards are popularized.
The existing electronic billboard has certain disadvantages that firstly, the existing electronic billboard can not place some maintenance tools and the internal electric wires can not be arranged, which causes great trouble to the workers for maintenance, and has certain convenience, secondly, the existing electronic billboard can not conveniently clean the internal dust, which results in poor heat dissipation effect in the electronic billboard, and finally, when the existing multimedia billboard breaks down, the existing multimedia billboard can not provide lighting conditions for the inside, which has certain inconvenience,
the invention aims to overcome the defects in the prior art and provide an electronic billboard which can effectively solve the problems in the background art.
In order to achieve the purpose, the invention provides the following technical scheme: an electronic advertising board comprises an electronic advertising board shell, wherein a display screen is fixedly arranged on the outer surface of the front section of the electronic advertising board shell, a sliding rail and a sliding rod are fixedly arranged on the outer surface of the upper end of the electronic advertising board shell, the sliding rail is positioned at the lower end of the sliding rod, an overhaul standby box is fixedly arranged on the outer surface of the lower end of the electronic advertising board shell, a flat cable classification rod and a tool storage box are arranged inside the overhaul standby box, the flat cable classification rod is positioned at the upper end of the tool storage box, a classification disc is fixedly arranged on the outer surface of the flat cable classification rod, a fixed base is fixedly arranged on the outer surface of the lower end of the overhaul standby box, a first universal wheel is fixedly connected to the outer surface of the lower end of the fixed base, a standby box door plate is arranged on the outer surface of the front end of the, an access door is arranged on the outer surface of one side of the electronic billboard shell, a lock catch is arranged on the outer surface of the middle part of one side of the access door, a first fixed block and a second fixed block are arranged on the inner surface of the upper end of the electronic billboard shell, the first fixed block is positioned on one side of the second fixed block, a lighting mechanism is fixedly connected with the outer surfaces of the lower ends of the first fixed block and the second fixed block, a bulb and a lighting lamp protective cover are arranged on the outer surface of the lower end of the lighting mechanism, the bulb is positioned in the middle of the lighting lamp protective cover, a standby power supply is fixedly arranged inside the lighting mechanism, a conductive head is fixedly connected with the outer surface of the lower end of the standby power supply, a power supply flat cable is fixedly connected with the lower end of the conductive head, a fixed, the utility model discloses a dust box, including control mechanism, control mechanism's both sides surface fixedly connected with head rod, control mechanism's front end surface fixedly connected with display screen winding displacement, the one end fixedly connected with display screen of display screen winding displacement, the both sides surface fixedly connected with second connecting rod of display screen, the opposite side surface of electronic billboard shell is provided with rotatory stick and dust box, rotatory stick is located the lower extreme of dust box, the lower extreme surface fixedly connected with second universal wheel of box is stored to the instrument.
1. As a preferred technical scheme of the invention, the outer surface of the lower end of the sliding rod is movably connected with the outer surface of the electronic billboard shell through a sliding track, a plurality of groups of buckles are arranged between the dust box and the electronic billboard shell, and the outer surface of the dust box is movably connected with the inner surface of the electronic billboard shell through the buckles.
2. As a preferred technical scheme of the invention, the sorting discs are in a plurality of groups, a thread is arranged between the flat cable sorting rod and the maintenance standby box, the outer surface of one end of the flat cable sorting rod is movably connected with the inner surface of the maintenance standby box through the thread, the second universal wheels are in four groups, the sorting discs are in a plurality of groups, and the outer surface of the lower end of the tool storage box is in sliding connection with the inner surface of the maintenance standby box through the second universal wheels.
3. As a preferred technical scheme of the present invention, the first fixing block is fixedly connected to the electronic billboard housing, the second fixing block is fixedly connected to the electronic billboard housing, the outer surface of the lower end of the conductive head is connected to the inner surface of the rear end of the bulb through a power supply cable, and the number of the conductive head and the number of the power supply cable are two.
4. As a preferable technical scheme of the present invention, the number of the first universal wheels is four, a fixing rod is arranged between the first universal wheel and the fixing base, and the outer surfaces of both sides of the first universal wheel are fixedly connected with the outer surface of the lower end of the fixing base through the fixing rod.
5. As a preferable technical scheme of the invention, the outer surface of the clamping groove is fixedly connected with the outer surface of the access door through the lock catch.
6. According to a preferable technical scheme of the invention, hinges are arranged between the spare box door plate and the overhaul spare box, the number of the hinges is a plurality of groups, and the outer surface of the front end of the spare box door plate is provided with a key hole.
7. As a preferred technical scheme of the present invention, fixed blocks are disposed between the fixed columns and the electronic billboard housing, the number of the fixed blocks is a plurality of groups, the outer surfaces of both sides of the fixed columns are fixedly connected to the inner surface of the rear end of the electronic billboard housing through the fixed blocks, the number of the first connecting rods is a plurality of groups, and the number of the first connecting rods and the number of the second connecting rods are four groups.
Compared with the prior art, the invention has the beneficial effects that:
1. the maintenance spare box is convenient for people to place the maintenance tools in the tool storage box in advance, and if the maintenance spare box is directly pulled out through the second universal wheel when in use, when some redundant flat cables cannot be accumulated, the flat cables can be fixed on the surface of the flat cable classifying rod and classified and accumulated through the classifying disk, so that the maintenance spare box can be maintained in time when the billboard breaks down or workers can conveniently clear the inner flat cable when the inner part breaks down.
2. According to the invention, through the lighting mechanism, when the electronic advertisement breaks down, electricity can be transmitted out through the standby power supply in the lighting mechanism and is transmitted to the power supply flat cable through the conductive head, so that the bulb is lightened, and good lighting conditions can be provided when workers maintain the electronic advertisement conveniently.
3. According to the invention, when dust is generated on the surface of the dust box, such as an electronic billboard, the sliding rod can slide on the surface of the sliding track, the cleaned dust is cleaned to the inside of the dust box, and then the dust box is detached and cleaned through the buckle, so that the internal heat dissipation effect is enhanced.
Drawings
FIG. 1 is an overall schematic view of the present invention;
FIG. 2 is a cross-sectional view of FIG. 1 according to the present invention;
FIG. 3 is a front view of FIG. 1 of the present invention;
FIG. 4 is a right side view of FIG. 1 in accordance with the present invention;
FIG. 5 is an enlarged view of A of FIG. 1 according to the present invention;
figure 6 is an internal structural view of the lighting mechanism 17 of figure 1 in accordance with the present invention;
in the figure: 1. a slide bar; 2. a sliding track; 3. a display screen; 4. an electronic billboard housing; 5. a flat cable sorting rod; 6. a tool storage case; 7. overhauling the standby box; 8. a fixed base; 9. a first universal wheel; 10. a card slot; 11. locking; 12. an access door; 13. a spare box door panel; 14. a protective cover for the illuminating lamp; 15. fixing a column; 16. a control mechanism; 17. an illumination mechanism; 18. a first connecting rod; 19. display screen cable arrangement; 20. a dust box; 21. rotating the rod; 22. a first fixed block; 23. a standby power supply; 24. a conductive head; 25. a bulb; 26. a power supply flat cable; 27. sorting the discs; 28. a second connecting rod; 29. a second fixed block; 30. a second universal wheel.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-6, the present invention provides a technical solution: an electronic billboard comprises an electronic billboard shell 4, a display screen 3 is fixedly arranged on the outer surface of the front section of the electronic billboard shell 4, a sliding rail 2 and a sliding rod 1 are fixedly arranged on the outer surface of the upper end of the electronic billboard shell 4, the sliding rail 2 is positioned at the lower end of the sliding rod 1, an overhaul standby box 7 is fixedly arranged on the outer surface of the lower end of the electronic billboard shell 4, a flat cable classifying rod 5 and a tool storage box 6 are arranged inside the overhaul standby box 7, the flat cable classifying rod 5 is positioned at the upper end of the tool storage box 6, a classifying disc 27 is fixedly arranged on the outer surface of the flat cable classifying rod 5, a fixed base 8 is fixedly arranged on the outer surface of the lower end of the overhaul standby box 7, a first universal wheel 9 is fixedly connected on the outer surface of the lower end of the fixed base 8, a standby box door plate 13 is arranged on the outer surface of the front end, an access door 12 is arranged on the outer surface of one side of an electronic billboard housing 4, a lock catch 11 is arranged on the outer surface of the middle part of one side of the access door 12, a first fixed block 22 and a second fixed block 29 are arranged on the inner surface of the upper end of the electronic billboard housing 4, the first fixed block 22 is positioned on one side of the second fixed block 29, the outer surfaces of the lower ends of the first fixed block 22 and the second fixed block 29 are fixedly connected with an illuminating mechanism 17, the outer surface of the lower end of the illuminating mechanism 17 is provided with a bulb 25 and an illuminating lamp protective cover 14, the bulb 25 is positioned in the middle part of the illuminating lamp protective cover 14, a standby power supply 23 is fixedly arranged inside the illuminating mechanism 17, the outer surface of the lower end of the standby power supply 23 is fixedly connected with a conductive head 24, the lower end of the conductive head 24 is fixedly connected with a, the outer fixed surface of both sides of control mechanism 16 is connected with first connecting rod 18, the outer fixed surface of front end of control mechanism 16 is connected with display screen winding displacement 19, the one end fixedly connected with display screen 3 of display screen winding displacement 19, the outer fixed surface of both sides of display screen 3 is connected with second connecting rod 28, the opposite side surface of electronic billboard shell 4 is provided with rotatory stick 21 and dust box 20, rotatory stick 21 is located the lower extreme of dust box 20, the lower extreme outer fixed surface of instrument storage box 6 is connected with second universal wheel 30.
In order to conveniently clean the dust on the surface of the display screen 3, in this embodiment, preferably, the outer surface of the lower end of the sliding rod 1 is movably connected with the outer surface of the electronic billboard housing 4 through the sliding rail 2, a plurality of groups of buckles are arranged between the dust box 20 and the electronic billboard housing 4, and the outer surface of the dust box 20 is movably connected with the inner surface of the electronic billboard housing 4 through the buckles.
In order to better summarize, arrange the flat cable and place the tool, in this embodiment, preferably, a thread is arranged between the flat cable classifying rod 5 and the maintenance standby box 7, the outer surface of one end of the flat cable classifying rod 5 is movably connected with the inner surface of the maintenance standby box 7 through the thread, the number of the second universal wheels 30 is four, the number of the classifying disks 27 is several, and the outer surface of the lower end of the tool storage box 6 is slidably connected with the inner surface of the maintenance standby box 7 through the second universal wheels 30.
In order to better provide lighting conditions and cause collapse, in this embodiment, preferably, the first fixing block 22 is fixedly connected with the electronic billboard housing 4, the second fixing block 29 is fixedly connected with the electronic billboard housing 4, the outer surface of the lower end of the conductive head 24 is connected with the inner surface of the rear end of the bulb 25 through the power flat cable 26 by an electric wire, and the number of the conductive head 24 and the power flat cable 26 is two.
In order to enable the electronic billboard to move better, in this embodiment, preferably, the number of the first universal wheels 9 is four, a fixing rod is arranged between the first universal wheels 9 and the fixing base 8, and the outer surfaces of two sides of the first universal wheels 9 are fixedly connected with the outer surface of the lower end of the fixing base 8 through the fixing rod.
In order to better fix them, in this embodiment, it is preferable that the outer surface of the card slot 10 is fixedly connected with the outer surface of the access door 12 through the lock catch 11.
In order to open the spare box door 13 better, in this embodiment, it is preferable that hinges are provided between the spare box door 13 and the repair spare box 7, the number of the hinges is a plurality of groups, and the outer surface of the front end of the spare box door 13 is provided with a key hole.
In order to fix the fixed posts and the electronic billboard housing 4 better, in this embodiment, preferably, fixed blocks are arranged between the fixed posts 15 and the electronic billboard housing 4, the number of the fixed blocks is several groups, the outer surfaces of both sides of the fixed posts 15 are fixedly connected with the inner surface of the rear end of the electronic billboard housing 4 through the fixed blocks, the number of the first connecting rods 18 is several groups, and the number of the first connecting rods 18 and the second connecting rods 28 is four groups.
The working principle and the using process of the invention are as follows: when the electronic billboard is used, a lock catch 11 and a clamping groove 10 on the inner surface of an access door 12 are opened through a key hole, then advertisements to be played are played through an internal usb interface, resource storage and debugging are performed, after the debugging is finished, the access door 12 is closed, the advertisements played can be watched from a display screen 3, in order to prevent the electronic billboard from breaking down, an internal storage maintenance tool of a tool storage box 6 can be stored in advance for the convenience of time and time, redundant flat cables in the interior can be gathered to the upper surface of a flat cable classifying rod 5 for winding, a maintainer can conveniently distinguish the flat cables, when the electronic billboard needs to be moved, the device can be moved through a first universal wheel 9, when dust generated on the surface of a screen needs to be cleaned, the sliding rod 1 can be used for sliding on the surface of a sliding rail 2, and the cleaned dust can be cleaned to the interior of a dust box 20, the dust box 20 is detached and cleaned through the buckle, so that the internal heat dissipation effect is enhanced, if the electronic advertising board breaks down, in order to provide good lighting conditions for a master worker, the standby power supply 23 inside the lighting mechanism 17 can supply electricity, the electricity is transmitted to the power supply flat cable 26 through the conductive head 24, the bulb 25 is enabled to light, and when the electronic advertising board is convenient to maintain, the good lighting conditions can be provided, and the whole operation is convenient and rapid.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. An electronic billboard, comprising an electronic billboard housing (4), characterized in that: the utility model discloses a display screen for electronic advertising board, including electron billboard shell (4), the anterior segment surface fixed mounting of electron billboard shell (4) has display screen (3), the upper end surface fixed mounting of electron billboard shell (4) has slip track (2) and slide bar (1), slip track (2) are located the lower extreme of slide bar (1), the lower extreme surface fixed mounting of electron billboard shell (4) has maintenance reserve box (7), the inside of maintaining reserve box (7) is provided with winding displacement classification pole (5) and instrument storage box (6), winding displacement classification pole (5) are located the upper end of instrument storage box (6), the surface fixed mounting of winding displacement classification pole (5) has classification dish (27), the lower extreme surface fixed mounting of maintaining reserve box (7) has unable adjustment base (8), the lower extreme surface fixed connection of unable adjustment base (8) has first universal wheel (9), the front end outer surface of the overhaul standby box (7) is provided with a standby box door plate (13), one side inner surface of the electronic billboard shell (4) is provided with a clamping groove (10), one side outer surface of the electronic billboard shell (4) is provided with an access door (12), one side middle outer surface of the access door (12) is provided with a lock catch (11), the upper end inner surface of the electronic billboard shell (4) is provided with a first fixed block (22) and a second fixed block (29), the first fixed block (22) is positioned at one side of the second fixed block (29), the lower end outer surface of the first fixed block (22) and the second fixed block (29) is fixedly connected with an illuminating mechanism (17), the lower end outer surface of the illuminating mechanism (17) is provided with a bulb (25) and an illuminating lamp protective cover (14), and the bulb (25) is positioned at the middle part of the illuminating lamp protective cover (14, the lighting device is characterized in that a standby power supply (23) is fixedly mounted inside the lighting mechanism (17), a conductive head (24) is fixedly connected to the outer surface of the lower end of the standby power supply (23), a power supply flat cable (26) is fixedly connected to the lower end of the conductive head (24), a fixed column (15) is fixedly mounted in the middle of the rear end of the electronic billboard shell (4), a control mechanism (16) is fixedly connected to the outer surface of the front end of the fixed column (15), first connecting rods (18) are fixedly connected to the outer surfaces of two sides of the control mechanism (16), a display flat cable (19) is fixedly connected to the outer surface of the front end of the control mechanism (16), a display screen (3) is fixedly connected to one end of the display flat cable (19), second connecting rods (28) are fixedly connected to the outer surfaces of two sides of the display screen (3), a rotating rod (21) and a dust box (20, the rotating rod (21) is located at the lower end of the dust box (20), and a second universal wheel (30) is fixedly connected to the outer surface of the lower end of the tool storage box (6).
2. An electronic billboard according to claim 1, in which: the outer surface of the lower end of the sliding rod (1) is movably connected with the outer surface of the electronic advertising board shell (4) through a sliding track (2), buckles are arranged between the dust box (20) and the electronic advertising board shell (4), the number of the buckles is a plurality of groups, and the outer surface of the dust box (20) is movably connected with the inner surface of the electronic advertising board shell (4) through the buckles.
3. An electronic billboard according to claim i, in which: the quantity of categorised dish (27) is a plurality of groups, be provided with the screw thread between categorised pole of winding displacement (5) and the reserve box of maintenance (7), the one end surface of the categorised pole of winding displacement (5) passes through the internal surface swing joint of screw thread with the reserve box of maintenance (7), the quantity of second universal wheel (30) is four groups, the quantity of categorised dish (27) is a plurality of groups, the lower extreme surface of instrument storage box (6) is through second universal wheel (30) and the internal surface of the reserve box of maintenance (7) be sliding connection.
4. An electronic billboard according to claim 1, in which: first fixed block (22) are fixed connection with electronic billboard shell (4), second fixed block (29) are fixed connection with electronic billboard shell (4), the lower extreme surface of electrically conductive head (24) is connected for the electric wire through power winding displacement (26) and the rear end internal surface of bulb (25), electrically conductive head (24) are two sets of with the quantity of power winding displacement (26).
5. An electronic billboard according to claim 1, in which: the number of the first universal wheels (9) is four, a fixing rod is arranged between each first universal wheel (9) and the corresponding fixing base (8), and the outer surfaces of the two sides of each first universal wheel (9) are fixedly connected with the outer surface of the lower end of the corresponding fixing base (8) through the fixing rods.
6. An electronic billboard according to claim 1, in which: the outer surface of the clamping groove (10) is fixedly connected with the outer surface of the access door (12) through a lock catch (11).
7. An electronic billboard according to claim 1, in which: hinges are arranged between the spare box door plates (13) and the overhaul spare boxes (7), the number of the hinges is a plurality of groups, and key holes are formed in the outer surfaces of the front ends of the spare box door plates (13).
8. An electronic billboard according to claim 1, in which: the electronic billboard is characterized in that fixed blocks are arranged between the fixed columns (15) and the electronic billboard shell (4), the number of the fixed blocks is a plurality of groups, the outer surfaces of two sides of the fixed columns (15) are fixedly connected with the inner surface of the rear end of the electronic billboard shell (4) through the fixed blocks, the number of the first connecting rods (18) is a plurality of groups, and the number of the first connecting rods (18) and the number of the second connecting rods (28) are four groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065054.0A CN110895900A (en) | 2018-09-12 | 2018-09-12 | Electronic billboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811065054.0A CN110895900A (en) | 2018-09-12 | 2018-09-12 | Electronic billboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110895900A true CN110895900A (en) | 2020-03-20 |
Family
ID=69785241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811065054.0A Pending CN110895900A (en) | 2018-09-12 | 2018-09-12 | Electronic billboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110895900A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445975A (en) * | 2022-09-07 | 2022-12-09 | 江苏军友新材料科技有限公司 | Advertisement putting device |
-
2018
- 2018-09-12 CN CN201811065054.0A patent/CN110895900A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115445975A (en) * | 2022-09-07 | 2022-12-09 | 江苏军友新材料科技有限公司 | Advertisement putting device |
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Application publication date: 20200320 |