A mobile publicity device for smart cities

Abstract

The utility model discloses a smart city mobile propaganda device, including a base and a display screen, wherein the display screen is driven to rise and fall by a lifting mechanism, and the lifting mechanism is driven by a first motor; a protective plate is rotatably installed on the inner side of the upper end of the lifting plate, and the protective plate is driven to rotate by a folding mechanism, and the folding mechanism is driven by a second motor. The utility model can lift and lower the display screen through the lifting device, and when in use, the display screen is raised to facilitate observation by nearby citizens, and the display screen is lowered during transportation to lower the center of gravity and reduce the volume of the display screen, increase the stability of movement, and save space; in the closed state, the display screen can be protected by shielding the front of the display screen with a protective plate to prevent the display screen from being damaged by collision or extrusion. When in use, the protective plate is opened by a folding mechanism, so that the protective plate is unfolded above the display screen to provide sunshade and rain protection, and has multiple effects.

Description

Technical Field

[0001] The utility model relates to the technical field of smart cities, and in particular to a mobile publicity device for smart cities. Background Art

[0002] The main goals of smart cities are to serve the people all the time, to achieve efficient and orderly urban governance, to open and share data, to achieve green and open source economic development, and to ensure a safe and clear cyberspace. Through system planning, information-led, reform and innovation, the new generation of information technology and urban modernization will be deeply integrated and iteratively evolved to achieve a new ecology of coordinated development between the country and the city. Its essence is a specific measure and embodiment of serving the people wholeheartedly. Smart city publicity devices are devices used by smart cities to publicize urban characteristics and display announcements, and are mainly used for the publicity of urban announcements.

[0003] Existing promotional devices are basically fixed on the ground and are not mobile. Mobile promotional devices are large in size and have a high center of gravity, making them inconvenient to move and transport. Smart promotional devices are equipped with display screens, which are relatively fragile and are easily subject to collision and friction during transportation, resulting in damage to the display screen. Utility Model Content

[0004] The purpose of the utility model is to provide a smart city mobile publicity device to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a smart city mobile publicity device, comprising a base and a display screen, the display screen is driven to rise and fall by a lifting mechanism, the lifting mechanism comprises a stand arranged on both sides of the upper end of the base, a notch is arranged on the inner side of the stand, and a screw rod is arranged inside the notch;

[0006] A fixing frame is provided on the periphery of the display screen, lifting plates are provided on both sides of the fixing frame, nut blocks are provided at the lower ends of both sides of the lifting plates, and the nut blocks are connected to the screw rod through threads;

[0007] The screw is driven to rotate by the driving shaft, a driven bevel gear is arranged at the lower end of the screw, a driving bevel gear is arranged on the driving shaft, and the driving bevel gear is meshed and connected with the driven bevel gear;

[0008] A protective plate is rotatably mounted on the inner side of the upper end of the lifting plate, and the protective plate is driven to rotate by a folding structure. The folding mechanism includes a connecting block arranged on the inner side of the protective plate, and the connecting block is rotatably mounted on the lifting plate via a rotating shaft. A large gear is provided at the outer end of the rotating shaft, and a small gear is meshedly connected to the large gear. The small gear is driven to rotate by a second motor, and the second motor is fixedly mounted on the inner side of the lifting plate.

[0009] Preferably, the base is provided with threaded holes near the four corners, a threaded rod is threadedly connected in the threaded hole, a foot pad is provided at the bottom of the threaded rod, and a hexagonal block is provided at the upper end of the threaded rod.

[0010] Preferably, four sets of wheels are provided at the bottom of the base, and the four sets of wheels are located inside the threaded rod.

[0011] Preferably, a plurality of limiting columns are provided on the front side of the stand, and the height of the limiting columns is greater than the display screen.

[0012] Preferably, a shell is provided on the outer periphery of the driving shaft.

[0013] Preferably, a first mounting block is provided at the upper end of the base, the first mounting block is located between the two vertical frames, and the driving shaft is rotatably mounted on the first mounting block.

[0014] Preferably, the driving shaft is driven to rotate by a first motor, and the first motor is fixedly mounted on the outside of the stand.

[0015] Preferably, a second mounting block is provided in the slot near both ends, and the screw rod is rotatably mounted on the second mounting block.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] The utility model can lift the display screen through the lifting device. When in use, the display screen is lifted up to facilitate nearby citizens to observe. During transportation, the display screen is lowered to lower the center of gravity and reduce the volume of the display screen, thereby increasing the stability of movement and saving space. The stand and the housing can protect the parts of the lifting mechanism, thereby increasing safety and stability.

[0018] In the closed state, the protective plate can be used to block the front of the display screen to protect the display screen from damage caused by collision or extrusion. The limit column can support the protective plate so that there is a certain gap between the protective plate and the display screen to prevent collision or friction between the protective plate and the display screen. When in use, the protective plate is opened by the folding mechanism so that the protective plate is unfolded above the display screen to provide sunshade and rain protection, which has multiple effects.

[0019] The wheels make it easy to move, which increases mobility. The hexagonal block is rotated by a wrench to move the threaded rod downward in the threaded hole, so that the foot pad can contact the ground and support the base, thereby increasing the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the structure when the utility model is used;

[0021] Figure 2 It is a front cross-sectional view of the utility model when in use;

[0022] Figure 3 It is a side view of the utility model when in use;

[0023] Figure 4 It is a schematic diagram of the structure of the utility model when it is closed;

[0024] Figure 5 It is a side view of the utility model when it is closed.

[0025] In the figure: 1. base; 2. stand; 3. notch; 4. screw; 5. display screen; 6. fixing frame; 7. lifting plate; 8. nut block; 9. driving shaft; 10. active bevel gear; 11. driven bevel gear; 12. first mounting block; 13. second mounting block; 14. first motor; 15. housing; 16. threaded rod; 17. foot pad; 18. hexagonal block; 19. wheel; 20. protection plate; 21. connecting block; 22. large gear; 23. small gear; 24. second motor; 25. limit column. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] See also Figure 1-5 The utility model provides a technical solution: a smart city mobile publicity device, comprising a base 1 and a display screen 5, the display screen 5 is driven to rise and fall by a lifting mechanism, the lifting mechanism comprises a stand 2 arranged on both sides of the upper end of the base 1, a notch 3 is arranged on the inner side of the stand 2, and a screw rod 4 is arranged inside the notch 3;

[0028] A fixed frame 6 is provided on the periphery of the display screen 5, and lifting plates 7 are provided on both sides of the fixed frame 6. Nut blocks 8 are provided at the lower ends of both sides of the lifting plates 7, and the nut blocks 8 are connected to the screw rod 4 through threads;

[0029] The screw rod 4 is driven to rotate by the driving shaft 9. A driven bevel gear 11 is provided at the lower end of the screw rod 4. A driving bevel gear 10 is provided on the driving shaft 9. The driving bevel gear 10 is meshed and connected with the driven bevel gear 11.

[0030] A housing 15 is provided around the outer periphery of the driving shaft 9;

[0031] A first mounting block 12 is provided at the upper end of the base 1. The first mounting block 12 is located between the two upright frames 2. The driving shaft 9 is rotatably mounted on the first mounting block 12.

[0032] The driving shaft 9 is driven to rotate by a first motor 14, and the first motor 14 is fixedly mounted on the outside of the stand 2;

[0033] Second mounting blocks 13 are provided near both ends of the slot 3 , and the screw rod 4 is rotatably mounted on the second mounting blocks 13 .

[0034] Among them, the display screen 5 is a smart screen used for city publicity. The display screen 5 can be raised and lowered by a lifting device. The display screen 5 is raised when in use to facilitate observation by nearby citizens. The display screen 5 is lowered during transportation to lower the center of gravity and reduce the volume of the display screen 5, increase the stability of movement, and save space. The fixed frame 6 is used to fix the display screen 5. The stand 2 and the shell 15 can protect the parts of the lifting mechanism to increase safety and stability.

[0035] When in use, start the first motor 14, the first motor 14 drives the driving shaft 9 to rotate, the driving shaft 9 drives the active bevel gear 10 to rotate, the active bevel gear 10 drives the driven bevel gear 11 to rotate, the driven bevel gear 11 drives the screw rod 4 to rotate, the screw rod 4 drives the lifting plate 7 to rise through the nut block 8, and the lifting plate 7 drives the display screen 5 to rise through the fixed frame 6.

[0036] A protective plate 20 is rotatably mounted on the inner side of the upper end of the lifting plate 7. The protective plate 20 is driven to rotate by a folding structure. The folding mechanism includes a connecting block 21 arranged on the inner side of the protective plate 20. The connecting block 21 is rotatably mounted on the lifting plate 7 through a rotating shaft. A large gear 22 is provided at the outer end of the rotating shaft. The large gear 22 is meshedly connected with a small gear 23. The small gear 23 is driven to rotate by a second motor 24. The second motor 24 is fixedly mounted on the inner side of the lifting plate 7.

[0037] A plurality of limiting posts 25 are provided on the front side of the stand 2 , and the height of the limiting posts 25 is greater than the display screen 5 .

[0038] Among them, the protection plate 20 is used to protect the display screen 5. Since the display screen 5 is relatively fragile, especially during transportation, the display screen 5 is easily damaged by collision or squeezing. Therefore, in the closed state, the protection plate 20 is set to block the front of the display screen 5 for protection. When in use, the protection plate 20 is opened and unfolded above the display screen 5 to provide sunshade and rain protection, which has multiple effects. When the protection plate 20 is closed, the limit column 25 can support the protection plate 20 so that there is a certain gap between the protection plate 20 and the display screen 5 to prevent the protection plate 20 from colliding or rubbing with the display screen 5.

[0039] When in use, the second motor 24 is started, the second motor 24 drives the small gear 23 to rotate, the small gear 23 drives the large gear 22 to rotate, and the large gear 22 drives the protection plate 20 to rotate through the connecting block 21, so that the protection plate 20 can be unfolded in a vertical state.

[0040] The base 1 is provided with threaded holes near the four corners, and threaded rods 16 are connected to the threaded holes through threads. A foot pad 17 is provided at the bottom of the threaded rod 16, and a hexagonal block 18 is provided at the upper end of the threaded rod 16.

[0041] Four sets of wheels 19 are provided at the bottom of the base 1 , and the four sets of wheels 19 are located inside the threaded rod 16 .

[0042] Among them, the threaded rod 16 and the foot pad 17 have a supporting function. In the closed state, the threaded rod 16 and the foot pad 17 are in an elevated state and will not affect the rotation of the wheel 19. The wheel 19 can be easily moved, which increases the maneuverability. When in use, the device is moved to the promotion area through the wheel 19, and then the hexagonal block 18 is rotated by a wrench to make the threaded rod 16 move downward in the threaded hole, so that the foot pad 17 can contact the ground and support the base 1, thereby increasing the stability of the device.

[0043] The working principle and use process of this utility model:

[0044] The display screen 5 can be raised and lowered by the lifting device. In the closed state, the display screen 5 is lowered to the inside of the stand 2, so that the display screen 5 has a lower center of gravity and a smaller volume, which increases the stability of movement and saves space. The protection plate 20 blocks the front of the display screen 5 for protection to prevent the display screen 5 from being damaged by collision or extrusion. When in use, the device is moved to the promotion area by the wheels 19, and then the hexagonal block 18 is rotated by a wrench to move the threaded rod 16 downward in the threaded hole, so that the foot pad 17 can contact the ground and support the base 1, thereby increasing the stability of the device. The first motor 14 is started, and the first motor 14 drives the drive shaft 9 to rotate, and the drive shaft 9 drives The active bevel gear 10 rotates, and the active bevel gear 10 drives the driven bevel gear 11 to rotate, and the driven bevel gear 11 drives the screw rod 4 to rotate, and the screw rod 4 drives the lifting plate 7 to rise through the nut block 8, and the lifting plate 7 drives the display screen 5 to rise through the fixed frame 6, so that the citizens nearby can observe the display screen 5, and the publicity effect can be better achieved; then the second motor 24 is started, and the second motor 24 drives the small gear 23 to rotate, and the small gear 23 drives the large gear 22 to rotate, and the large gear 22 drives the protection plate 20 to rotate through the connecting block 21, so that the protection plate 20 can be unfolded in a vertical state, and the protection plate 20 unfolded above the display screen 5 can provide sunshade and rain protection, and has multiple effects.

[0045] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A smart city mobile publicity device, comprising a base (1) and a display screen (5), characterized in that: The display screen (5) is driven to rise and fall by a lifting mechanism, wherein the lifting mechanism comprises a stand (2) arranged on both sides of the upper end of the base (1), a notch (3) is provided on the inner side of the stand (2), and a screw rod (4) is provided inside the notch (3); A fixed frame (6) is provided on the outer periphery of the display screen (5), lifting plates (7) are provided on both sides of the fixed frame (6), nut blocks (8) are provided at the lower ends of both sides of the lifting plates (7), and the nut blocks (8) are connected to the screw rod (4) via threads; The screw rod (4) is driven to rotate by a driving shaft (9); a driven bevel gear (11) is provided at the lower end of the screw rod (4); a driving bevel gear (10) is provided on the driving shaft (9); and the driving bevel gear (10) is meshingly connected with the driven bevel gear (11); A protective plate (20) is rotatably mounted on the inner side of the upper end of the lifting plate (7); the protective plate (20) is driven to rotate by a folding structure; the folding structure comprises a connecting block (21) arranged on the inner side of the protective plate (20); the connecting block (21) is rotatably mounted on the lifting plate (7) via a rotating shaft; a large gear (22) is provided at the outer end of the rotating shaft; the large gear (22) is meshingly connected with a small gear (23); the small gear (23) is driven to rotate by a second motor (24); the second motor (24) is fixedly mounted on the inner side of the lifting plate (7).

2. A smart city mobile advertising device according to claim 1, characterized in that: The base (1) is provided with threaded holes near the four corners, a threaded rod (16) is threadedly connected in the threaded hole, a foot pad (17) is provided at the bottom of the threaded rod (16), and a hexagonal block (18) is provided at the upper end of the threaded rod (16).

3. A smart city mobile advertising device according to claim 2, characterized in that: Four sets of wheels (19) are provided at the bottom of the base (1), and the four sets of wheels (19) are located inside the threaded rod (16).

4. The smart city mobile advertising device according to claim 1, characterized in that: A plurality of limiting columns (25) are provided on the front of the stand (2), and the limiting columns (25) are higher than the display screen (5).

5. The smart city mobile advertising device according to claim 1, characterized in that: A housing (15) is provided on the outer periphery of the driving shaft (9).

6. The smart city mobile advertising device according to claim 1, characterized in that: A first mounting block (12) is provided at the upper end of the base (1), the first mounting block (12) is located between the two upright frames (2), and the drive shaft (9) is rotatably mounted on the first mounting block (12).

7. The smart city mobile advertising device according to claim 1, characterized in that: The driving shaft (9) is driven to rotate by a first motor (14), and the first motor (14) is fixedly mounted on the outside of the stand (2).

8. The smart city mobile advertising device according to claim 1, characterized in that: Second mounting blocks (13) are provided in the notch (3) near both ends, and the screw rod (4) is rotatably mounted on the second mounting blocks (13).

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