CN110956898B - Radiating rotation type electronic information display device - Google Patents
Radiating rotation type electronic information display device Download PDFInfo
- Publication number
- CN110956898B CN110956898B CN201911164520.5A CN201911164520A CN110956898B CN 110956898 B CN110956898 B CN 110956898B CN 201911164520 A CN201911164520 A CN 201911164520A CN 110956898 B CN110956898 B CN 110956898B
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- display screen
- disc
- base
- periphery
- connecting rod
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- 238000004140 cleaning Methods 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 20
- 230000017525 heat dissipation Effects 0.000 claims description 15
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000009826 distribution Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 9
- 230000002093 peripheral effect Effects 0.000 abstract description 5
- 238000003860 storage Methods 0.000 abstract description 4
- 238000013461 design Methods 0.000 description 6
- 230000005855 radiation Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09F—DISPLAYING; ADVERTISING; SIGNS; LABELS OR NAME-PLATES; SEALS
- G09F9/00—Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements
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- 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
- B08B1/10—Cleaning by methods involving the use of tools characterised by the type of cleaning tool
- B08B1/14—Wipes; Absorbent members, e.g. swabs or sponges
- B08B1/143—Wipes
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/2007—Undercarriages with or without wheels comprising means allowing pivoting adjustment
- F16M11/2014—Undercarriages with or without wheels comprising means allowing pivoting adjustment around a vertical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16M—FRAMES, CASINGS OR BEDS OF ENGINES, MACHINES OR APPARATUS, NOT SPECIFIC TO ENGINES, MACHINES OR APPARATUS PROVIDED FOR ELSEWHERE; STANDS; SUPPORTS
- F16M11/00—Stands or trestles as supports for apparatus or articles placed thereon ; Stands for scientific apparatus such as gravitational force meters
- F16M11/20—Undercarriages with or without wheels
- F16M11/22—Undercarriages with or without wheels with approximately constant height, e.g. with constant length of column or of legs
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
- H05K7/20954—Modifications to facilitate cooling, ventilating, or heating for display panels
- H05K7/20972—Forced ventilation, e.g. on heat dissipaters coupled to components
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Thermal Sciences (AREA)
- Microelectronics & Electronic Packaging (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Displays For Variable Information Using Movable Means (AREA)
Abstract
The invention provides a rotary electronic information display device capable of efficiently dissipating heat, and relates to the technical field of electronic information. This high-efficient radiating rotation type electronic information display device, the on-line screen storage device comprises a base, the top of base is rotated and is connected with the carousel, the top fixed mounting of carousel has the framework, the triangular prism shape that is of framework, and the equal fixedly connected with display screen in three surface, the peripheral fixedly connected with display screen of framework, there is the lift ring peripheral through connecting rod sliding connection of framework, the inboard fixedly connected with cleaning strip of lift ring. This high-efficient radiating rotation type electronic information display device has improved the bearing capacity of information, also makes the crowd of equidirectional not can observe the information on the display screen, can carry out the cleaning repeatedly by the display screen, has guaranteed the clean degree of display screen, has improved display effect, has improved the radiating effect to the display screen, has guaranteed display device's normal work.
Description
Technical Field
The invention relates to the technical field of electronic information, in particular to a heat-dissipation rotary electronic information display device.
Background
Electronic information is a vocabulary in informatics under the background of rapid development of computer technology, communication technology and high-density storage technology and widely applied in various fields, replaces the long-term storage and transmission of information by a paper carrier in the aspects of information storage, transmission and application, has good information display and advertising capacity, and is visible everywhere in places with high traffic of people, such as streets, stations and the like.
However, most of the conventional electronic information display devices are large display screens which can be controlled by a computer, in the using process, information can be displayed only in the direction towards the display screens, the information amount borne by a single display screen is small, and in order to enable more people to observe the display screens, the common display screens are arranged at high positions, so that the electronic information display devices cannot be cleaned conveniently and regularly, the display effect is influenced, some electronic information display devices are not operated intermittently, heat can be generated in the using process, and the damage of the display devices is easily caused if the heat dissipation is insufficient.
In order to solve the above problems, the inventor provides a heat-dissipating rotary electronic information display device, which improves the information carrying capacity, enables people in different directions to observe information on a display screen, can repeatedly wipe the display screen, ensures the cleanliness of the display screen, improves the display effect, improves the heat-dissipating effect of the display screen, and ensures the normal operation of the display device.
Disclosure of Invention
In order to achieve the purpose, the invention is realized by the following technical scheme: a radiating rotary electronic information display device comprises a base, a rotary table, a frame body, a display screen, a connecting rod, a lifting ring, a cleaning strip, a threaded rod, a gear, an inner sawtooth, a motor, a rolling shaft, a radiating cylinder, a disc, a corrugated pipe, an air inlet, an arc groove, an air outlet, a limiting rod and a lantern ring.
Wherein:
the top of the base is rotatably connected with a turntable, the top end of the turntable is fixedly provided with a frame body, the frame body is in a triangular prism shape, three surfaces of the frame body are fixedly connected with a display screen, the periphery of the frame body is fixedly connected with a lifting ring through a connecting rod in a sliding manner, the inner side of the lifting ring is fixedly connected with a cleaning strip, the connecting rod is internally meshed with a threaded rod, the bottom end of the threaded rod is fixedly provided with a gear, the periphery of the gear inside the base is provided with inner sawteeth, the inside of the base is fixedly provided with a motor, a rotating shaft of the motor is fixedly provided with a rolling shaft, the center of the base is fixedly provided with a heat dissipation cylinder, the inside of the heat dissipation cylinder is slidably connected with a disc, the top end of the disc is fixedly provided with a corrugated pipe, the top of the heat dissipation cylinder is provided with an air inlet, and the periphery of the heat dissipation cylinder is provided with an arc groove, the periphery of the arc groove is provided with an air outlet, the periphery of the disc is fixedly provided with a limiting rod, and the inner side of the connecting rod is fixedly provided with a lantern ring.
Preferably, the three corners of the frame body are provided with sliding grooves, and the connecting rods are connected in the sliding grooves in a sliding mode, so that the lifting ring can move up and down on the periphery of the frame body.
Preferably, the threaded rod is connected with the spacing rotation of carousel, just the threaded rod extends to the below of carousel, the total three groups of quantity of threaded rod all pass the connecting rod and mesh mutually with it, consequently, at threaded rod pivoted in-process, can drive the connecting rod and reciprocate.
Preferably, the notch has been seted up to the below of base inner rotating disc, interior sawtooth has been seted up to the inside of notch, the gear all meshes with interior sawtooth mutually, consequently, follows the connecting rod at the threaded rod and carries out the pivoted in-process, utilizes the intermeshing of gear and interior sawtooth, can make threaded rod self take place to rotate.
Preferably, the combination of the motors and the rollers is two groups, the two groups of the combination are respectively positioned at the left side and the right side of the bottom of the turntable, the rollers are attached to the bottom of the turntable, and the turntable can rotate forwards and backwards in a reciprocating mode by means of alternate rotation of the two motors.
Preferably, a one-way valve is fixedly mounted inside the air inlet, so that air can enter from the air inlet and cannot flow out from the air inlet.
Preferably, the circular arc grooves are distributed in alignment with the display screen, so that air in the circular arc grooves can be blown to the back of the display screen.
Preferably, one side of the limiting rod, which is far away from the center of the heat dissipation cylinder, is connected to the inner side of the sleeve ring in a sliding manner, so that the limiting rod and the disc can be driven to move up and down in the process of rotating and moving up and down of the sleeve ring.
The invention provides a heat-radiating rotary electronic information display device. The method has the following beneficial effects:
1. this high-efficient radiating rotation type electronic information display device through the design of three peripheral display screens of framework to and the rotation of carousel drive framework, can make three display screens circulate the show to the crowd in different positions, not only improved the bearing capacity of information, also make the crowd of equidirectional not can observe the information on the display screen.
2. This high-efficient radiating rotation type electronic information display device, through the design of lifting ring, the threaded rod of cooperation lifting ring connecting rod inside engagement utilizes the intermeshing of threaded rod bottom gear and interior sawtooth at lifting ring pivoted in-process, can make the threaded rod drive the lifting ring and reciprocate, and then makes the inboard clean strip of lifting ring can carry out the cleaning repeatedly to the display screen, has guaranteed the clean degree of display screen, has improved display effect.
3. This high-efficient radiating rotation type electronic information display device, through the design of bellows in the heat dissipation section of thick bamboo, at the in-process that the lantern ring drove the disc and reciprocated, utilize the disc to drive the folding and the extension of bellows, can follow the air inlet suction air to blow off the air current from the venthole of circular arc groove, and then blow to the back of display screen, improved the radiating effect to the display screen, guaranteed display device's normal work.
Drawings
FIG. 1 is a perspective view of the structure of the present invention;
FIG. 2 is a cross-sectional view of a top view of the structure of the present invention;
FIG. 3 is an enlarged top view of the heat dissipating barrel structure of the present invention;
FIG. 4 is a cross-sectional view of a base structure of the present invention;
FIG. 5 is a cross-sectional view of the structure of FIG. 4 taken along line A-A thereof in accordance with the present invention;
FIG. 6 is a cross-sectional view of the heat-dissipating cylinder structure of the present invention.
In the figure: 1. a base; 2. a turntable; 3. a frame body; 4. a display screen; 5. a connecting rod; 6. a lifting ring; 7. a cleaning strip; 8. a threaded rod; 9. a gear; 10. inner saw teeth; 11. a motor; 12. a roller; 13. a heat-dissipating cylinder; 14. a disc; 15. a bellows; 16. an air inlet; 17. an arc groove; 18. an air outlet; 19. a limiting rod; 20. a collar.
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.
The embodiment of the rotary electronic information display device with high heat dissipation efficiency comprises the following steps:
referring to fig. 1-6, a heat-dissipating rotary electronic information display device includes a base 1, a turntable 2, a frame 3, a display screen 4, a connecting rod 5, a lifting ring 6, a cleaning strip 7, a threaded rod 8, a gear 9, an inner saw tooth 10, a motor 11, a roller 12, a heat-dissipating cylinder 13, a disk 14, a corrugated tube 15, an air inlet 16, an arc groove 17, an air outlet 18, a limiting rod 19, and a collar 20.
Wherein:
base 1's top is rotated and is connected with carousel 2, the top fixed mounting of carousel 2 has framework 3, the spout has all been seted up to the three corner of framework 3, 5 sliding connection of connecting rod are in the spout, make the lifting ring 6 can reciprocate in framework 3's periphery, framework 3 is triangular prism shape, and the equal fixedly connected with display screen 4 in three surface, framework 3's peripheral fixedly connected with display screen 4, design through three peripheral display screens 4 of framework 3, and carousel 2 drives the rotation of framework 3, can make three display screens 4 to the crowd circulation show in different position, the bearing capacity of information has not only been improved, also make the crowd of equidirectional not can observe the information on the display screen 4.
The periphery of the frame body 3 is connected with a lifting ring 6 in a sliding way through a connecting rod 5, the inner side of the lifting ring 6 is fixedly connected with a cleaning strip 7, the inner part of the connecting rod 5 is meshed with a threaded rod 8, the threaded rod 8 is connected with the turntable 2 in a limiting and rotating way, the threaded rod 8 extends to the lower part of the turntable 2, three groups of the threaded rods 8 are arranged, and the threaded rods pass through the connecting rod 5 and are meshed with the connecting rod 5, therefore, the connecting rod 5 can be driven to move up and down in the rotating process of the threaded rod 8, a gear 9 is fixedly arranged at the bottom end of the threaded rod 8, inner saw teeth 10 are arranged on the periphery of the gear 9 in the base 1, a notch is arranged below the turntable 2 in the base 1, inner saw teeth 10 are arranged in the notch, the gear 9 is meshed with the inner saw teeth 10, therefore, in the rotating process of the threaded rod 8 along with the connecting rod 5, the mutual meshing of the gear 9 and the inner saw teeth 10 can enable the threaded rod 8 to rotate, base 1's inside fixed mounting has motor 11, motor 11 and roller bearing 12's combination is total two sets ofly, be located the left and right sides of carousel 2 bottom respectively, and roller bearing 12 is attached mutually with the bottom of carousel 2, utilize two motor 11's rotation in turn, can make carousel 2 carry out reciprocal positive and negative rotation, fixed mounting has roller bearing 12 in motor 11's the pivot, design through elevator ring 6, the inside engaged threaded rod 8 of cooperation elevator ring 6 connecting rod 5, at elevator ring 6 pivoted in-process, utilize 8 bottom gears 9 of threaded rod and the intermeshing of interior sawtooth 10, can make threaded rod 8 drive elevator ring 6 reciprocate, and then make the inboard clean strip 7 of elevator ring 6 can carry out the repeated cleaning to display screen 4, the clean degree of display screen 4 has been guaranteed, the display effect has been improved.
A heat radiation cylinder 13 is fixedly arranged at the center of the base 1, a disc 14 is connected inside the heat radiation cylinder 13 in a sliding manner, a corrugated pipe 15 is fixedly arranged at the top end of the disc 14, an air inlet 16 is arranged at the top of the heat radiation cylinder 13, a one-way valve is fixedly arranged inside the air inlet 16, so that air can enter from the air inlet 16 and cannot flow out from the air inlet 16, an arc groove 17 is arranged at the periphery of the heat radiation cylinder 13, the distribution of the arc groove 17 is aligned with the display screen 4, so that the air in the arc groove 17 can be blown to the back of the display screen 4, an air outlet 18 is arranged at the periphery of the arc groove 17, a limiting rod 19 is fixedly arranged at the periphery of the disc 14, one side of the limiting rod 19, which is far away from the center of the heat radiation cylinder 13, is connected to the inner side of a lantern ring 20 in a sliding manner, so that the limiting rod 19 and the disc 14 can be driven to move up and down in the rotating and up-down process of the lantern ring 20, and the inner side of the connecting rod 5 is fixedly arranged with the lantern ring 20, through the design of bellows 15 in heat-dissipating cylinder 13, at the in-process that lantern ring 20 drove disc 14 and reciprocated, utilize disc 14 to drive the folding and the extension of bellows 15, can follow air inlet 16 suction air to blow off the air current from the venthole 18 of circular arc groove 17, and then blow to the back of display screen 4, improved the radiating effect to display screen 4, guaranteed display device's normal work.
When the display device is used, information to be displayed is issued on three display screens 4 on the periphery of the turntable 2 under the control of a computer, then the motor 11 is utilized to drive the roller 12 to rotate, so that the turntable 2 slowly rotates above the base 1, so that the three display screens 4 can circularly display people in different directions, in the rotating process of the turntable 2, the frame body 3 and the lifting ring 6 are driven to synchronously rotate, the threaded rod 8 is driven to rotate, in the rotating process of the threaded rod 8 following the connecting rod 5, the threaded rod 8 can rotate by utilizing the mutual meshing of the gear 9 at the bottom end of the threaded rod 8 and the inner saw teeth 10, the connecting rod 5 can drive the lifting ring 6 to move upwards on the periphery of the frame body 3 by matching with the mutual meshing of the threaded rod 8 and the connecting rod 5, in the moving process, the surface of the display screen 4 can be cleaned by utilizing the cleaning strip 7 on the inner side of the lifting ring 6, meanwhile, in the process that the connecting rod 5 drives the lantern ring 20 to move upwards, the lantern ring 20 enables the disc 14 to move upwards by using the action of the limiting rod 19, and further compresses the corrugated pipe 15, because a one-way valve is arranged in the air inlet 16, air cannot flow out of the air inlet 16, so that air in the corrugated pipe 15 enters the arc groove 17 and is blown out from the air outlet 18, and thus the back of the display screen 4 can be more effectively radiated, when the lifting ring 6 rises to the topmost end, the rolling shaft 12 is driven by the motor 11 on the other side to rotate reversely the turntable 2, and further the lifting ring 6 moves downwards, and meanwhile, the disc 14 moves downwards, and the corrugated pipe 15 is pulled to extend downwards to suck air, therefore, in the process of reciprocating rotation of the turntable 2, the frame body 3 can be rotated, and the lifting ring 6 moves upwards and downwards to clean the surface of the display screen 4, so that the corrugated tube 15 can suck air and blow the air flow to the back of the display screen 4, thereby accelerating the heat dissipation of the display screen 4.
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 (1)
1. The utility model provides a radiating rotation type electronic information display device, includes base (1), its characterized in that: the top of the base (1) is rotatably connected with a turntable (2), the top end of the turntable (2) is fixedly provided with a frame body (3), the periphery of the frame body (3) is fixedly connected with a display screen (4), the periphery of the frame body (3) is slidably connected with a lifting ring (6) through a connecting rod (5), the inner side of the lifting ring (6) is fixedly connected with a cleaning strip (7), the inner part of the connecting rod (5) is meshed with a threaded rod (8), the bottom end of the threaded rod (8) is fixedly provided with a gear (9), the periphery of the gear (9) inside the base (1) is provided with inner sawteeth (10), the inner part of the base (1) is fixedly provided with a motor (11), a rolling shaft (12) is fixedly arranged on a rotating shaft of the motor (11), the center of the base (1) is fixedly provided with a heat dissipation cylinder (13), the inner part of the heat dissipation cylinder (13) is slidably connected with a disc (14), the corrugated pipe (15) is fixedly installed at the top end of the disc (14), the top of the heat dissipation cylinder (13) is provided with an air inlet (16), the periphery of the heat dissipation cylinder (13) is provided with an arc groove (17), the periphery of the arc groove (17) is provided with an air outlet hole (18), the periphery of the disc (14) is fixedly installed with a limiting rod (19), and the inner side of the connecting rod (5) is fixedly installed with a lantern ring (20);
the frame body (3) is in a triangular prism shape, and three surfaces of the frame body are fixedly connected with a display screen (4);
chutes are formed in three corners of the frame body (3), and the connecting rod (5) is connected in the chutes in a sliding manner;
the threaded rods (8) are connected with the rotary table (2) in a limiting and rotating mode, the threaded rods (8) extend to the lower portion of the rotary table (2), and three groups of threaded rods (8) penetrate through the connecting rods (5) and are meshed with the connecting rods (5);
a notch is formed below the inner rotary disc (2) of the base (1), inner saw teeth (10) are formed in the notch, and the gears (9) are meshed with the inner saw teeth (10);
the motor (11) and the rolling shaft (12) are combined into two groups and are respectively positioned at the left side and the right side of the bottom of the turntable (2), and the rolling shaft (12) is attached to the bottom of the turntable (2); the two motors (11) are used for alternatively rotating, so that the rotating disc (2) can rotate forwards and backwards in a reciprocating manner; the screw rod (8) meshed with the inside of the connecting rod (5) of the lifting ring (6) is matched, in the rotating process of the lifting ring (6), the screw rod (8) can drive the lifting ring (6) to move up and down by utilizing the mutual meshing of the gear (9) at the bottom end of the screw rod (8) and the inner saw teeth (10), and then the cleaning strip (7) on the inner side of the lifting ring (6) can repeatedly clean the display screen (4);
a one-way valve is fixedly arranged in the air inlet (16);
the distribution of the arc grooves (17) is aligned with the display screen (4);
one side of the limiting rod (19) far away from the center of the heat dissipation cylinder (13) is connected to the inner side of the lantern ring (20) in a sliding mode;
in the process that the lantern ring (20) drives the disc (14) to move up and down, the disc (14) is used for driving the corrugated pipe (15) to fold and extend, air can be sucked from the air inlet (16), air flow is blown out from the air outlet holes (18) of the arc grooves (17), and then the air flow is blown to the back of the display screen (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164520.5A CN110956898B (en) | 2019-11-25 | 2019-11-25 | Radiating rotation type electronic information display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911164520.5A CN110956898B (en) | 2019-11-25 | 2019-11-25 | Radiating rotation type electronic information display device |
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| Publication Number | Publication Date |
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| CN110956898A CN110956898A (en) | 2020-04-03 |
| CN110956898B true CN110956898B (en) | 2021-08-27 |
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| CN201911164520.5A Expired - Fee Related CN110956898B (en) | 2019-11-25 | 2019-11-25 | Radiating rotation type electronic information display device |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112837638A (en) * | 2020-12-17 | 2021-05-25 | 深圳市盛景基因生物科技有限公司 | Disease prevention publicity column based on internet |
| CN113409625B (en) * | 2021-08-18 | 2021-11-05 | 深圳市志承远大科技有限公司 | A projection device for outdoor teaching |
| CN114526411A (en) * | 2022-02-22 | 2022-05-24 | 肖春 | Display screen capable of being displayed at multiple angles |
| CN114542899A (en) * | 2022-02-28 | 2022-05-27 | 云阳县腾玛人工智能科技有限公司 | Mounting bracket for angle-adjustable video conference terminal |
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