Information display device for industrial park operation management
By designing an information display device with compacting and folding components, the problems of poor display effect and difficult storage are solved, and efficient display and convenient storage are achieved.
Patent Information
- Application Number
- CN202422552910.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-22
- Publication Date
- 2025-10-28
- Estimated Expiration
- 2034-10-22
AI Technical Summary
In the prior art, the industrial park operation and management information display device cannot effectively compress the paper, resulting in poor display effect, and is bulky when stored, increasing the difficulty of storage.
An information display device is designed, which includes a display board body, a pressing component, a supporting component, a positioning component and a folding component. The pressing component is used to press and display the paper, and the folding component is used to reduce the volume after use for easy storage.
The display effect is improved, paper wrinkles are avoided, the storage of the device is convenient, and the occupied space is reduced.
Smart Images

Figure CN223486667U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of industrial park operation and management, and in particular to an information display device for industrial park operation and management. Background Technology
[0002] Industrial park operation and management refers to the operation and management of offices, meeting rooms, public facilities and other places in an industrial park. In order to facilitate people's understanding of industrial park operation and management, it is necessary to display paper with relevant information on industrial park operation and management. Therefore, an information display device for industrial park operation and management is needed.
[0003] Chinese Patent CN209388654U discloses a convenient information display rack for park operation and management, comprising a first display panel, with fixed boxes fixedly connected to both sides of the first display panel, a second display panel movably connected to the inner cavity of the first display panel, a first crossbar fixedly connected to the top of the second display panel, and retraction rods fixedly connected to both sides of the bottom of the first crossbar. This invention solves the problem of inconvenient retraction of traditional park operation and management information display racks. The second display panel on this rack can be pulled upwards to expand the display area. To retract, simply press the push handle, which moves the first locking pin out of the locking groove and releases the lock via the movable rod. Then, press the first crossbar downwards to retract the retraction rods into the inner cavity of the fixed boxes. Finally, retract the support rods into the inner cavity of the retraction rods. This reduces the size of the display rack, making it convenient for users to retract and store.
[0004] However, in this patent, when displaying paper printed with information about the operation and management of industrial parks, it is impossible to press the paper tightly, so it can only be pasted on by adhesive. This may cause the paper to wrinkle, reducing its display effect. Furthermore, in this patent, when it needs to be stored, its volume reduction effect is not very good, so its volume may still be large, which may still occupy a lot of space and increase the difficulty of storing it. Utility Model Content
[0005] This invention provides an information display device for industrial park operation and management to solve the problems of poor display effect and inconvenience of storage in the prior art. It can improve the display effect and is easy to store.
[0006] To achieve the above objectives, this utility model provides the following technical solution: an information display device for industrial park operation and management, comprising two display panel bodies. A clamping component is fixedly installed on the front side of each display panel body to press against paper printed with information related to industrial park operation and management displayed on the display panel body. A support component is fixedly installed at the bottom of the clamping component to support the display panel body. First positioning components for positioning the clamping component are fixedly installed on one and the other sides of the clamping component. A second positioning component for positioning the clamping component is fixedly installed on the rear side of the first positioning component. A rotating folding component for folding the display panel body by rotation is rotatably installed on one outer surface of each display panel body. First limiting components for limiting the rotating folding component are fixedly installed on the top, bottom, top outer surface, and bottom outer surface of the rotating folding component. Second limiting components for limiting the rotating folding component are fixedly installed on the top and bottom of each display panel body.
[0007] Furthermore, the clamping assembly includes a transparent door-shaped panel, the rear side of which is fixedly installed on the front side of the display panel body. The front side of the transparent door-shaped panel has a display elongated hole and a mounting groove. A return spring is fixedly connected to the inner wall of the rear end of the mounting groove. A transparent L-shaped rod is fixedly connected to the front end of the return spring. The transparent L-shaped rod is slidably installed inside the transparent door-shaped panel and inside the display elongated hole, respectively. A transparent pressure plate is fixedly connected to the rear side of the transparent L-shaped rod. The transparent pressure plate is slidably installed inside the transparent door-shaped panel.
[0008] Furthermore, the support assembly includes a vertical support leg, the top of which is fixedly installed on the bottom of the transparent door-shaped panel, and a weighted support plate is fixedly connected to one side of the vertical support leg.
[0009] Furthermore, the first positioning component includes a second transparent long rod and a first transparent long rod, with one side of the second transparent long rod fixedly installed on one side of the transparent L-shaped rod, and one side of the first transparent long rod fixedly installed on the other side of the transparent L-shaped rod.
[0010] Furthermore, the second positioning component includes a positioning rod, the front side of which is fixedly installed on the rear side of the first transparent rod, and a limiting rod is fixedly connected to both the top and bottom of the positioning rod. Both the positioning rod and the limiting rod are slidably installed inside the transparent door-shaped panel.
[0011] Furthermore, the rotating folding assembly includes a gate-shaped long plate, which is rotatably connected to one outer surface of the main body of the display panel. A second supporting shaft is fixedly connected between the inner top wall and the inner bottom wall of the gate-shaped long plate, and the second supporting shaft is rotatably connected to the main body of the display panel.
[0012] Furthermore, the first limiting component includes four first supporting shafts and two portal rods. The bottoms of the two first supporting shafts are fixedly installed on the top of the portal-shaped long plate, and the tops of the other two first supporting shafts are fixedly installed on the bottom of the portal-shaped long plate. One portal rod is fixedly installed on the outer surface of the top of the portal-shaped long plate, and the other portal rod is fixedly installed on the outer surface of the bottom of the portal-shaped long plate. The ends of the four first supporting shafts away from the portal-shaped long plate are fixedly connected to limiting posts. The top of one portal rod and the bottom of the other portal rod are provided with a first threaded groove and a second threaded groove. The portal rod is rotatably connected to the main body of the display panel.
[0013] Furthermore, the second limiting component includes four L-shaped long rods. One side of two L-shaped long rods is fixedly installed on the top and bottom of one display panel body, respectively, and one side of the other two L-shaped long rods is fixedly installed on the top and bottom of another display panel body, respectively. Limiting screws are threaded inside the body of each of the four L-shaped long rods. The L-shaped long rods are rotatably connected to the gate-shaped long plate, the first support vertical shaft, the gate-shaped rod, and the limiting post, respectively.
[0014] The working principle and usage principle of this utility model are as follows: During the use of this device, through the arrangement of the display panel body, pressing component, supporting component, first positioning component, and second positioning component, this device can display paper printed with information related to industrial park operation and management. When displaying this paper, the device can press it firmly, avoiding the need for adhesive methods. This prevents wrinkles that could reduce the display effect, thus improving the overall display quality. Furthermore, through the arrangement of the display panel body, rotating and folding component, first limiting component, and second limiting component, the device can be fully folded after use, reducing its size and minimizing storage space. This makes storage easier and more convenient.
[0015] The beneficial technical effects of this utility model are:
[0016] By configuring the display panel body, pressing component, supporting component, first positioning component, and second positioning component, this device can display paper printed with information related to industrial park operation and management. When displaying paper with such information on this device, the device can press the paper firmly, thus improving the display effect. Furthermore, by configuring the display panel body, rotating and folding component, first limiting component, and second limiting component, this device can be fully folded after use and can be easily stored. Attached Figure Description
[0017] Figure 1 This is a frontal perspective three-dimensional schematic diagram of the present invention;
[0018] Figure 2 This is a three-dimensional schematic diagram of the L-shaped long rod of this utility model;
[0019] Figure 3 This is a three-dimensional schematic diagram of the door-shaped long plate of this utility model;
[0020] Figure 4 This is a three-dimensional schematic diagram of the transparent door-shaped panel of this utility model;
[0021] Figure 5 This is a three-dimensional schematic diagram of the transparent pressure plate of this utility model;
[0022] Figure 6 This is a rear-view perspective view of the present invention;
[0023] Figure 7 This is a three-dimensional schematic diagram of the portal-shaped rod of this utility model.
[0024] Explanation of reference numerals in the attached drawings: 1. Limiting post; 2. Gate-shaped long plate; 3. Gate-shaped rod; 4. Display panel body; 5. L-shaped long rod; 6. Limiting screw; 7. Weighted support plate; 8. Vertical support leg; 9. Transparent gate-shaped panel; 10. Transparent pressure plate; 11. Transparent L-shaped rod; 12. First transparent long rod; 13. Second transparent long rod; 14. Second supporting vertical shaft; 15. First threaded groove; 16. Second threaded groove; 17. First supporting vertical shaft; 18. Mounting groove; 19. Limiting long rod; 20. Return spring; 21. Positioning long rod; 22. Display long hole. Detailed Implementation
[0025] To make the technical means, creative features, objectives and effects of the embodiments of this application easier to understand, the embodiments of this application are further described below in conjunction with the figures and specific embodiments. It should be understood that the specific embodiments described herein are only used to explain the embodiments of this application and are not intended to limit the embodiments of this application.
[0026] Example 1: Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 and Figure 7As shown: An information display device for industrial park operation and management includes a display panel body 4, a transparent gate-shaped panel 9, vertical support legs 8, a second transparent long rod 13, a first transparent long rod 12, and a positioning long rod 21. There are two display panel bodies 4. A clamping assembly is fixedly installed on the front side of each display panel body 4 to press down on paper printed with information related to industrial park operation and management displayed on the display panel body 4. The clamping assembly includes the transparent gate-shaped panel 9, whose rear side is fixedly installed on the front side of the display panel body 4. The front side of the transparent gate-shaped panel 9 has a display elongated hole 22 and a mounting groove 18. A return spring 20 is fixedly connected to the inner wall of the rear end of the mounting groove 18, and a transparent L-shaped rod 11 is fixedly connected to the front end of the return spring 20. The transparent L-shaped rod 11 is slidably installed on... Inside the transparent door-shaped panel 9 and the display elongated hole 22, a transparent pressure plate 10 is fixedly connected to the rear side of the transparent L-shaped rod 11. The transparent pressure plate 10 is slidably installed inside the transparent door-shaped panel 9. There are two transparent door-shaped panels 9 and two transparent pressure plates 10. A support component for supporting the display panel body 4 is fixedly installed at the bottom of the pressing assembly. The support component includes a vertical support leg 8. The top of the vertical support leg 8 is fixedly installed at the bottom of the transparent door-shaped panel 9. A weighted support plate 7 is fixedly connected to one side of the vertical support leg 8. A first positioning component of the positioning pressing assembly is fixedly installed on one side and the other side of the pressing assembly. The first positioning component includes a second transparent long rod 13 and a first transparent long rod 12. One side of the second transparent long rod 13 is fixedly installed on the transparent L-shaped rod 11. On one side, one side of the first transparent long rod 12 is fixedly installed on the other side of the transparent L-shaped rod 11. The transparent door-shaped panel 9, the transparent pressure plate 10, the transparent L-shaped rod 11, the first transparent long rod 12, and the second transparent long rod 13 are all made of plastic. A second positioning component of the positioning and pressing component is fixedly installed on the rear side of the first positioning component. The second positioning component includes a positioning long rod 21. The front side of the positioning long rod 21 is fixedly installed on the rear side of the first transparent long rod 12. The top and bottom of the positioning long rod 21 are fixedly connected to limit long rods 19. The positioning long rod 21 and the limit long rod 19 are slidably installed inside the body of the transparent door-shaped panel 9. Through the arrangement of the display panel body 4, the pressing component, the support component, the first positioning component, and the second positioning component, the pressing component can be positioned on the... The paper printed with information about the operation and management of the industrial park on the main body 4 of the display board is pressed down, so that the supporting components can support the main body 4 of the display board. The first positioning component and the second positioning component can both position the pressing component, so that the device can display the paper printed with information about the operation and management of the industrial park. When displaying the paper printed with information about the operation and management of the industrial park on the device, the device can press the paper printed with information about the operation and management of the industrial park to avoid displaying the paper printed with information about the operation and management of the industrial park by pasting. The device can also avoid the paper printed with information about the operation and management of the industrial park to wrinkle, which would reduce the display effect, so that the device can improve the display effect.
[0027] In use, the initial state of this device is as follows: the two display panel bodies 4 are not folded and the limiting screw 6 is threadedly connected to the first threaded groove 15. The rear side of the transparent pressure plate 10 is in contact with the front side of the display panel body 4. During the operation and management of the industrial park, when it is necessary to use this device to display paper printed with relevant information on the operation and management of the industrial park, place the device on the ground. Under the action of the vertical support leg 8 and the weighted support plate 7, the display panel body 4 can be supported. Pull the first transparent long rod 12 away from the display panel body 4 to stretch the return spring 20, so that the transparent L-shaped rod 11 moves along the transparent door-shaped plate 9 and the display long rod 12 respectively. Hole 22 slides away from the main body 4 of the display panel, causing both the positioning rod 21 and the limiting rod 19 to slide along the transparent door-shaped plate 9 away from the main body 4 of the display panel. This causes the second transparent rod 13 to move away from the main body 4 of the display panel, and the transparent pressure plate 10 to slide along the transparent door-shaped plate 9 away from the main body 4 of the display panel. When the transparent pressure plate 10 slides to its maximum distance along the transparent door-shaped plate 9, the state of the transparent pressure plate 10 sliding to its maximum distance along the transparent door-shaped plate 9 remains unchanged, and the first transparent rod 12 remains in a pulled state. The paper printed with relevant information on industrial park operation and management is moved, so that the paper printed with relevant information on industrial park operation and management... The paper containing information about the industrial park's operation and management is passed through two transparent door-shaped panels 9, and the paper is brought into contact with the two display panel bodies 4. When the paper containing the information about the industrial park's operation and management is completely inside the two transparent door-shaped panels 9, the first transparent long rod 12 is released, and the return spring 20 changes from a stretched state to a compressed state. The transparent L-shaped rod 11 slides along the transparent door-shaped panel 9 and the display elongated hole 22 towards the display panel body 4, and the positioning long rod 21 and the limiting long rod 19 slide along the transparent door-shaped panel 9 towards the display panel body 4. The second transparent long rod 13 and the first transparent long rod 12 also slide towards the display panel body 4. The display panel body 4 moves in a certain direction, causing the transparent pressure plate 10 to slide along the transparent door-shaped plate 9 towards the display panel body 4. When the transparent pressure plate 10 slides to its maximum distance along the transparent door-shaped plate 9 towards the display panel body 4, under the action of the return spring 20, the paper printed with relevant information on industrial park operation and management can be pressed and displayed by the two transparent pressure plates 10. This prevents the paper printed with relevant information on industrial park operation and management from being displayed by pasting, and prevents the paper printed with relevant information on industrial park operation and management from wrinkling. At this time, this device can be used to display the paper printed with relevant information on industrial park operation and management.
[0028] In summary, this device can display paper printed with information related to the operation and management of industrial parks. When displaying such paper, the device can press it firmly, avoiding the need for adhesive methods and preventing wrinkles that could reduce the display effect. This enhances the overall display quality.
[0029] Example 2: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 6 and Figure 7As shown: An information display device for industrial park operation and management includes a display panel body 4, a portal-shaped long plate 2, four first supporting shafts 17, two portal-shaped rods 3, and four L-shaped long rods 5. A rotating folding assembly for folding the display panel body 4 by rotation is rotatably installed on one outer surface of the display panel body 4. The rotating folding assembly includes the portal-shaped long plate 2, which is rotatably connected to one outer surface of the display panel body 4. A second supporting shaft 14 is fixedly connected between the inner top wall and the inner bottom wall of the portal-shaped long plate 2, and the second supporting shaft 14 is rotatably connected to the display panel body 4. The top, bottom, and other parts of the rotating folding assembly are also included. The top outer surface of the rotating folding assembly and the bottom outer surface of the rotating folding assembly are both fixedly installed with a first limiting component of the limiting rotating folding assembly. The first limiting component includes four first supporting shafts 17 and two portal rods 3. The bottoms of the two first supporting shafts 17 are fixedly installed on the top of the portal long plate 2, and the tops of the other two first supporting shafts 17 are fixedly installed on the bottom of the portal long plate 2. One portal rod 3 is fixedly installed on the top outer surface of the portal long plate 2, and the other portal rod 3 is fixedly installed on the bottom outer surface of the portal long plate 2. The ends of the four first supporting shafts 17 away from the portal long plate 2 are all fixedly connected to a limiting post 1. The top of the portal rod 3 and the The bottom of the other gate-shaped rod 3 is provided with a first threaded groove 15 and a second threaded groove 16. The gate-shaped rod 3 is rotatably connected to the display panel body 4. The top and bottom of the display panel body 4 are fixedly installed with second limiting components that limit the rotation and folding assembly. The second limiting component includes four L-shaped rods 5. One side of two L-shaped rods 5 is fixedly installed on the top and bottom of one display panel body 4, and one side of the other two L-shaped rods 5 is fixedly installed on the top and bottom of another display panel body 4, respectively. The inside of the four L-shaped rods 5 is threaded with limiting screws 6. The limiting screws 6 are threaded to the first threaded groove 15 and the second threaded groove 16, respectively. Then, the L-shaped long rod 5 is rotatably connected to the gate-shaped long plate 2, the first support vertical shaft 17, the gate-shaped rod 3 and the limiting post 1 respectively. Through the setting of the display panel body 4, the rotating folding assembly, the first limiting assembly and the second limiting assembly, the rotating folding assembly can fold the display panel body 4 by rotating. The first limiting assembly and the second limiting assembly can limit the rotating folding assembly. After the device is used, when the device needs to be stored, the device can be fully folded, which has a good effect of reducing the size of the device. This avoids the difficulty of storage due to the device still occupying a large space, and makes the device easy to store.
[0030] When using this device, after use, when it needs to be stored, rotate the limiting screw 6 to disengage it from the first threaded groove 15 and position one end of the limiting screw 6 inside the body of the L-shaped rod 5. Rotate the L-shaped rod 5 so that the two L-shaped rods 5 rotate along the other two L-shaped rods 5, causing the L-shaped rods 5 to rotate along the gate-shaped plate 2, the first support shaft 17, the limiting post 1, and the gate-shaped rod 3 respectively. This causes the display panel body 4 to rotate along the gate-shaped plate 2, the second support shaft 14, and the gate-shaped rod 3 respectively. This causes the transparent gate-shaped plate 9, the transparent pressure plate 10, the transparent L-shaped rod 11, the first transparent long rod 12, and the second transparent long rod 13 to all rotate. When the rotation angle is ninety degrees, the two display panel bodies 4 rotate until they contact each other, and the two L-shaped rods... The L-shaped long rod 5 rotates until it contacts the other two L-shaped long rods 5. The limiting screw 6 corresponds to the second threaded groove 16. The limiting screw 6 is rotated in the opposite direction to make the limiting screw 6 threadedly connected to the second threaded groove 16. Under the action of the two display panel bodies 4 rotating to contact each other, both display panel bodies 4 can be folded, so that the device can be fully folded, which has a good effect of reducing the size of the device and avoids occupying a large space. At this time, the device can be stored. In summary, after the device is used, when the device needs to be stored, the device can be fully folded, which has a good effect of reducing the size of the device and avoids increasing the difficulty of storage due to the possibility of still occupying a large space, so that the device can be stored conveniently.
[0031] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.
Claims
1. An information display device for industrial park operation and management, comprising two display panel bodies (4), characterized in that: A pressing component is fixedly installed on the front side of the display board body (4) to press the paper with relevant information on industrial park operation and management printed on the display board body (4). A support component is fixedly installed at the bottom of the pressing component to support the display board body (4). A first positioning component of the positioning pressing component is fixedly installed on one side and the other side of the pressing component. A second positioning component of the positioning pressing component is fixedly installed on the rear side of the first positioning component. A rotating folding component is rotatably installed on one outer surface of the display board body (4) to fold the display board body (4) by rotation. A first limiting component of the rotating folding component is fixedly installed on the top, bottom, top outer surface and bottom outer surface of the rotating folding component. A second limiting component of the rotating folding component is fixedly installed on the top and bottom of the display board body (4).
2. The information display device for industrial park operation and management according to claim 1, characterized in that: The clamping assembly includes a transparent door-shaped panel (9), the rear side of which is fixedly installed on the front side of the display panel body (4). The front side of the transparent door-shaped panel (9) has a display elongated hole (22) and a mounting groove (18). A reset spring (20) is fixedly connected to the inner wall of the rear end of the mounting groove (18). A transparent L-shaped rod (11) is fixedly connected to the front end of the reset spring (20). The transparent L-shaped rod (11) is slidably installed inside the transparent door-shaped panel (9) and inside the display elongated hole (22). A transparent pressure plate (10) is fixedly connected to the rear side of the transparent L-shaped rod (11). The transparent pressure plate (10) is slidably installed inside the transparent door-shaped panel (9).
3. An information display device for industrial park operation and management according to claim 1 or 2, characterized in that: The support assembly includes a vertical support leg (8), the top of which is fixedly installed on the bottom of the transparent door-shaped panel (9), and a weighted support plate (7) is fixedly connected to one side of the vertical support leg (8).
4. The information display device for industrial park operation and management according to claim 3, characterized in that: The first positioning component includes a second transparent long rod (13) and a first transparent long rod (12). One side of the second transparent long rod (13) is fixedly installed on one side of the transparent L-shaped rod (11), and one side of the first transparent long rod (12) is fixedly installed on the other side of the transparent L-shaped rod (11).
5. An information display device for industrial park operation and management according to claim 1, 2, or 4, characterized in that: The second positioning component includes a positioning rod (21), the front side of which is fixedly installed on the rear side of the first transparent rod (12), and the top and bottom of the positioning rod (21) are fixedly connected to a limiting rod (19). The positioning rod (21) and the limiting rod (19) are both slidably installed inside the transparent door-shaped plate (9).
6. The information display device for industrial park operation and management according to claim 3, characterized in that: The second positioning component includes a positioning rod (21), the front side of which is fixedly installed on the rear side of the first transparent rod (12), and the top and bottom of the positioning rod (21) are fixedly connected to a limiting rod (19). The positioning rod (21) and the limiting rod (19) are both slidably installed inside the transparent door-shaped plate (9).
7. An information display device for industrial park operation and management according to claim 1, 2, 4 or 6, characterized in that: The rotating folding assembly includes a gate-shaped long plate (2), which is rotatably connected to one outer surface of the display panel body (4). A second supporting shaft (14) is fixedly connected between the inner top wall and the inner bottom wall of the gate-shaped long plate (2), and the second supporting shaft (14) is rotatably connected to the display panel body (4).
8. The information display device for industrial park operation and management according to claim 5, characterized in that: The rotating folding assembly includes a gate-shaped long plate (2), which is rotatably connected to one outer surface of the display panel body (4). A second supporting shaft (14) is fixedly connected between the inner top wall and the inner bottom wall of the gate-shaped long plate (2), and the second supporting shaft (14) is rotatably connected to the display panel body (4).
9. An information display device for industrial park operation and management according to claim 1, 2, 4, 6 or 8, characterized in that: The first limiting component includes four first supporting shafts (17) and two portal rods (3). The bottom of the two first supporting shafts (17) is fixedly installed on the top of the portal long plate (2), and the top of the other two first supporting shafts (17) is fixedly installed on the bottom of the portal long plate (2). One portal rod (3) is fixedly installed on the outer surface of the top of the portal long plate (2), and the other portal rod (3) is fixedly installed on the outer surface of the bottom of the portal long plate (2). The end of each of the four first supporting shafts (17) away from the portal long plate (2) is fixedly connected to a limiting post (1). The top of one portal rod (3) and the bottom of the other portal rod (3) are provided with a first threaded groove (15) and a second threaded groove (16). The portal rod (3) is rotatably connected to the main body of the display panel (4).
10. An information display device for industrial park operation and management according to claim 9, characterized in that: The second limiting component includes four L-shaped long rods (5). Two L-shaped long rods (5) are fixedly installed on one side of the top and bottom of a display panel body (4), and the other two L-shaped long rods (5) are fixedly installed on one side of the top and bottom of another display panel body (4). The four L-shaped long rods (5) are threaded with limiting screws (6) inside their bodies. The L-shaped long rods (5) are rotatably connected to the gate-shaped long plate (2), the first support shaft (17), the gate-shaped rod (3), and the limiting post (1).
Citation Information
Patent Citations
Park operation management information display rack convenient to fold and unfold
CN209388654U