Connecting device, supporting unit and wind-resistant frame

Abstract

The utility model belongs to the technical field of fixing structures, and discloses a connecting device, a supporting unit and a wind-resistant frame. The connecting device comprises a first connecting rod, a second connecting rod, an adjusting rod and a locking assembly. One end of the first connecting rod is connected with the supporting rod, and the other end is provided with a first connecting block; one end of the second connecting rod is connected with the supporting rod, and the other end extends away from the first connecting rod; the adjusting rod is slidably connected to the second connecting rod, and the other end of the adjusting rod is provided with a second connecting block. The locking assembly is arranged on the second connecting rod, and the locking assembly can partially stretch into the second connecting rod and abut against the adjusting rod so as to lock the adjusting rod. Therefore, when the connecting device is used, the distance between the first connecting block and the second connecting block can be flexibly adjusted, the adaptability of the connecting device is effectively improved, meanwhile, independent disassembly and assembly are not needed, the number of structures can be effectively reduced, storage and arrangement are convenient, the disassembly and assembly difficulty can be effectively reduced, and the disassembly and assembly efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of fixed structure technology, and in particular to connecting devices, support units and wind-resistant frames. Background Technology

[0002] The wind-resistant frame is the core support structure when installing outdoor display screens and other devices. The wind-resistant frame consists of multiple sets of sequentially spliced ​​support units, and each support unit is fixedly connected to the display screen and other devices through connecting rods to ensure that the overall stability meets the requirements.

[0003] In the prior art, both ends of the connecting rod are equipped with high-strength bolts, and the connection parts of different display screens and other devices are different. Therefore, multiple sets of connecting rods of different sizes are configured accordingly. During installation, the corresponding length of connecting rod is selected, and one end of the connecting rod is fixedly connected to the support unit by bolts, while the other end is connected to the display screen and other devices.

[0004] The aforementioned wind-resistant frame requires the use of connecting rods of different lengths during assembly and disassembly, resulting in a large number of parts and making storage difficult. Furthermore, the connecting rods require the tightening of multiple bolts during assembly and disassembly, making the assembly and disassembly of the connecting rods difficult and inefficient, thus affecting the overall assembly and disassembly efficiency of devices such as display screens. Utility Model Content

[0005] The purpose of this utility model is to provide a connecting device, a support unit, and a wind-resistant frame, which solves the problems of the large number of parts and the difficulty of storage in the existing wind-resistant frame, as well as the problem of the difficulty and low efficiency of assembling and disassembling the connecting rod, resulting in the low overall assembly and disassembly efficiency of the display screen and other devices.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] In a first aspect, this application provides a connecting device, which includes:

[0008] The first connecting rod has one end connected to the support rod and the other end provided with a first connecting block that is fixedly connected to the display device;

[0009] The second connecting rod has one end connected to the support rod and the other end extending away from the first connecting rod;

[0010] An adjusting rod is slidably connected to the second connecting rod, and the other end of the adjusting rod extends out of the second connecting rod and is provided with a second connecting block that is fixedly connected to the display device;

[0011] A locking component is disposed on the second connecting rod, the locking component being capable of partially extending into the second connecting rod and abutting against the adjusting rod to lock the adjusting rod.

[0012] Optionally, the locking component includes:

[0013] A locking seat is provided on the second connecting rod;

[0014] A locking part is slidably connected to the locking seat, and one end of the locking part passes through the locking seat and the second connecting rod and can abut against the adjusting rod.

[0015] Optionally, the adjusting rod has multiple slots along the sliding direction for the locking part to be inserted.

[0016] Optionally, the locking component further includes:

[0017] An elastic element, one end of which abuts against the locking part, and the other end of which abuts against the locking seat to push the locking part away from the adjusting rod;

[0018] A fixed cam is rotatably connected to the locking seat and abuts against the side of the locking part away from the adjusting rod. The fixed cam is used to push the locking part through the locking seat and the second connecting rod.

[0019] Optionally, the connecting device further includes:

[0020] A guide portion is disposed on the adjusting rod, and the second connecting rod has a guide groove. The guide portion extends at least partially into the guide groove and slides in cooperation with the guide groove.

[0021] Optionally, the connecting device further includes:

[0022] An elastic part is provided on the adjusting rod;

[0023] The inner side wall of the second connecting rod is provided with a limiting hole that engages with the elastic part.

[0024] Optionally, the first connecting block is rotatably connected to the first connecting rod; and / or

[0025] The second connecting block is rotatably connected to the second connecting rod; and / or

[0026] At least one of the first connecting rod and the second connecting rod is rotatably connected to the support rod.

[0027] Secondly, the support unit includes:

[0028] Support rod;

[0029] Multiple connecting devices as described in any one of the first aspects are spaced apart on the support rod and connected to the display device.

[0030] Optionally, the support unit includes:

[0031] A first connector is disposed at one end of the support rod;

[0032] The second connector is located at the other end of the support rod and is plugged into and fixed to the first connector.

[0033] Thirdly, a wind-resistant frame, used for fixing and installing the display device, includes:

[0034] Multiple support units as described in the second aspect are sequentially spliced ​​together and fixedly connected to the display device.

[0035] The beneficial effects of this utility model are:

[0036] Firstly, when connecting the display device, the length of the extending adjustment rod is adjusted according to the position of the connection structure on the display device, thereby adjusting the distance between the first and second connecting blocks. When both the first and second connecting blocks correspond to the connection structure, the locking component is pressed against the adjustment rod to lock it, and then the first and second connecting blocks are fixedly connected to the display device respectively. Therefore, when using this connection device, the distance between the first and second connecting blocks can be flexibly adjusted according to different display devices, eliminating the need for multiple connection structures of different lengths, effectively improving the adaptability of the connection device. At the same time, by directly setting the first and second connecting rods on the support rod, separate disassembly and assembly are no longer required, which not only effectively reduces the number of structures and facilitates storage and organization, but also effectively reduces the difficulty of disassembly and assembly, thereby improving the efficiency of disassembly and assembly.

[0037] Secondly, when the support unit is installed outdoors, it can quickly adapt to different types of display devices using the connecting device, thereby effectively improving the adaptability of the support unit and simplifying the installation and disassembly process, thus effectively improving the installation and disassembly efficiency.

[0038] Thirdly, when the wind-resistant frame is installed outdoors, two adjacent support units can be quickly assembled. Each support unit can also be fixedly connected to the display device through the connecting device, thereby reducing the number of bolts that need to be tightened during the installation process, effectively reducing the difficulty of installation and disassembly, and improving the efficiency of installation and disassembly of the display device. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the support unit in an embodiment of the present invention;

[0040] Figure 2 This is a schematic diagram of the structure of the connecting device with the adjusting rod fully retracted in an embodiment of this utility model;

[0041] Figure 3 This is a cross-sectional view of the structure of the connecting device in an embodiment of this utility model with the adjusting rod fully retracted;

[0042] Figure 4 This is a schematic diagram of the structure of the connecting device with the adjusting rod fully extended in an embodiment of this utility model;

[0043] Figure 5 This is a cross-sectional view of the connecting device in an embodiment of the present invention with the adjusting rod fully extended.

[0044] Figure 6 This is a schematic diagram of the wind-resistant frame in an embodiment of this utility model.

[0045] In the picture:

[0046] 1. First connecting rod; 11. First connecting block; 2. Second connecting rod; 21. Second connecting block; 22. Guide groove; 23. Limiting hole; 3. Adjusting rod; 31. Slot; 4. Locking assembly; 41. Locking seat; 42. Locking part; 421. Locking disc; 422. Guide post; 43. Elastic element; 44. Fixed cam; 441. Handle; 5. Support rod; 6. Guide part; 7. Elastic part; 8. First connector; 9. Second connector. Detailed Implementation

[0047] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0048] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0049] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0050] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0051] This application discloses a connecting device, a support unit, and a wind-resistant frame.

[0052] Reference Figures 1 to 5 The connecting device includes a first connecting rod 1, a second connecting rod 2, an adjusting rod 3, and a locking assembly 4. One end of the first connecting rod 1 is connected to the support rod 5, and the other end is provided with a first connecting block 11 fixedly connected to the display device; one end of the second connecting rod 2 is connected to the support rod 5, and the other end extends away from the first connecting rod 1; the adjusting rod 3 is slidably connected to the second connecting rod 2, and the other end of the adjusting rod 3 extends out of the second connecting rod 2 and is provided with a second connecting block 21 fixedly connected to the display device; the locking assembly 4 is provided on the second connecting rod 2, and the locking assembly 4 can partially extend into the second connecting rod 2 and abut against the adjusting rod 3 to lock the adjusting rod 3.

[0053] Specifically, the first connecting rod 1 and the second connecting rod 2 are located on both sides of the support rod 5. Both can be fixedly connected to the support rod 5, or rotatably connected to the support rod 5 via hinges or other structures. Alternatively, one can be fixedly connected to the support rod 5 while the other is rotatably connected, facilitating adjustment of the angle between the first connecting rod 1 and the second connecting rod 2. A first connecting block 11 is provided at the end of the first connecting rod 1 furthest from the support rod 5. The first connecting block 11 can be adapted to the connection structure of the display device. The first connecting block 11 and the connection structure can be fixedly connected by bolts, or they can be plugged into each other to form a snap-fit ​​connection. In this embodiment, the first connecting block 11 has two through holes, each containing a screw that is threadedly connected to the connection structure. The second connecting block 21 has the same structure as the first connecting block 11, and will not be described further here.

[0054] The second connecting rod 2 is hollow, and the adjusting rod 3 is slidably connected inside the second connecting rod 2. The adjusting rod 3 can be a telescopic structure, allowing it to extend and retract. Alternatively, the adjusting rod 3 can be a straight rod, sliding out or retracting from the end of the second connecting rod 2 away from the support rod 5 to achieve extension and retraction. The locking component 4 is located at the opening of the second connecting rod 2, and a through hole is formed in the side wall of the second connecting rod 2. Part of the structure of the locking component 4 can abut against the side wall of the adjusting rod 3 through this through hole.

[0055] When connecting the display device, the length of the extending adjustment rod 3 is adjusted according to the position of the connection structure on the display device, thereby adjusting the distance between the first connecting block 11 and the second connecting block 21. When both the first connecting block 11 and the second connecting block 21 correspond to the connection structure, the locking component 4 is pressed against the adjustment rod 3 to lock the adjustment rod 3, and then the first connecting block 11 and the second connecting block 21 are fixedly connected to the display device respectively. Therefore, when using this connection device, the distance between the first connecting block 11 and the second connecting block 21 can be flexibly adjusted according to different display devices, eliminating the need for multiple connection structures of different lengths, effectively improving the adaptability of the connection device. At the same time, the first connecting rod 1 and the second connecting rod 2 are directly set on the support rod 5, eliminating the need for separate disassembly and assembly. This not only effectively reduces the number of structures and facilitates storage and organization, but also effectively reduces the difficulty of disassembly and assembly, thereby improving the efficiency of disassembly and assembly.

[0056] The locking assembly 4 includes a locking seat 41 and a locking part 42. The locking seat 41 is disposed on the second connecting rod 2; the locking part 42 is slidably connected to the locking seat 41, and one end of the locking part 42 passes through the locking seat 41 and the second connecting rod 2 and can abut against the adjusting rod 3.

[0057] Specifically, the locking seat 41 has a U-shaped cross-section, and its bottom wall can be fixed to the side wall of the second connecting rod 2 by welding or bonding. A locking hole is provided on the bottom wall of the locking seat 41 to correspond to the through hole on the second connecting rod 2. The locking part 42 is columnar, and its lower end can be located in the locking hole and slide in the locking hole. The lower end of the locking part 42 can pass through the through hole and abut against the side wall of the adjusting rod 3. A limiting structure, such as a spring, pressure block, or bolt, can be provided at the upper end of the locking part 42 to limit the sliding range of the locking part 42.

[0058] By setting a locking seat 41 and a locking part 42, when locking, the locking part 42 passes through the locking seat 41 and is inserted into the second connecting rod 2. When the locking part 42 abuts against the adjusting rod 3, the adjusting rod 3 and the second connecting rod 2 are locked. When unlocking is required, simply pull out the locking part 42 to disengage it from the adjusting rod 3 to release the lock. In this way, locking and unlocking the adjusting rod 3 can be achieved by operating only the locking part 42, effectively simplifying the operation, saving time and effort, and facilitating the quick adjustment of the adjusting rod 3.

[0059] Optionally, the adjusting rod 3 has multiple slots 31 along the sliding direction for the locking part 42 to be inserted.

[0060] Specifically, multiple slots 31 are provided on the side wall of the adjusting rod 3 facing the locking part 42. The slots 31 allow the lower end of the locking part 42 to be inserted. The number and spacing of the slots 31 can be designed according to the adjustment range required for the adjusting rod 3, and this application does not impose any limitations. In this embodiment, only two slots 31 are provided at intervals to correspond to the states when the adjusting rod 3 is fully extended or fully retracted, respectively. To facilitate insertion, the lower end of the locking part 42 can be stepped to reduce the size of the lower end of the locking part 42, making it easier for the locking part 42 to be quickly inserted into the slot 31. It should be understood that the lower end of the locking part 42 can also be spherical or pointed, and this application does not impose any limitations on this.

[0061] Optionally, the locking assembly 4 further includes an elastic element 43 and a fixed cam 44. One end of the elastic element 43 abuts against the locking part 42, and the other end abuts against the locking seat 41 to push the locking part 42 away from the adjusting rod 3; the fixed cam 44 is rotatably connected to the locking seat 41 and abuts against the side of the locking part 42 away from the adjusting rod 3, and the fixed cam 44 is used to push the locking part 42 through the locking seat 41 and the second connecting rod 2.

[0062] Specifically, the upper end of the locking part 42 has a locking disc 421, the size of which is larger than that of the locking part 42. The locking disc 421 has a plurality of guide posts 422 spaced apart along the circumference. Parts of the guide posts 422 are inserted into the locking seat 41 and slidably connected to the locking seat 41. The elastic element 43 can be an elastic rod or a spring, etc., which can deform in the vertical direction. In this embodiment, the elastic element 43 is a spring, and a spring is sleeved on the periphery of each guide post 422.

[0063] The fixed cam 44 is located on the top wall of the locking disc 421 and abuts against the top wall of the locking disc 421. The fixed cam 44 is rotatably connected to the locking seat 41 via a rotating rod. A handle 441 can be provided on the fixed cam 44 to drive the fixed cam 44 to rotate. At this time, the fixed cam 44 is rotatably connected to the rotating rod. Alternatively, a handle 441 can be provided on the rotating rod. In this case, the fixed cam 44 is fixedly connected to the rotating rod, while the rotating rod is rotatably connected to the locking seat 41.

[0064] By setting up the elastic element 43 and the fixed cam 44, when locking the adjusting rod 3, rotating the fixed cam 44 causes the protrusion of the fixed cam 44 to gradually press the locking part 42, thereby pushing the locking part 42 into the second connecting rod 2 and pressing the elastic element 43 until the locking part 42 abuts against the locking rod or is inserted into the slot 31, thus locking the adjusting rod 3. At this time, the abutting force between the fixed cam 44 and the locking disc 421 can also lock the fixed cam 44, thus ensuring that the locking part 42 remains in the locked position without changing. When it is necessary to unlock, the fixed cam 44 needs to be reversed so that the protrusion of the fixed cam 44 is misaligned with the locking part 42. The elastic element 43 can then push the locking part 42 away from the second connecting rod 2. When the locking part 42 disengages from the adjusting rod 3, the lock is released. In this way, only rotating the fixed cam 44 is needed to change the position of the locking part 42, which further simplifies the locking and unlocking operations.

[0065] Optionally, the connecting device further includes a guide portion 6. The guide portion 6 is disposed on the adjusting rod 3, and the second connecting rod 2 has a guide groove 22. The guide portion 6 extends at least partially into the guide groove 22 and slides in cooperation with the guide groove 22.

[0066] Specifically, a fixing part is provided on the side of the second connecting rod 2. The fixing part can be a bolt, with its stud threaded to the adjusting rod 3, and the screw head is located in the guide groove 22. The guide groove 22 extends along the extension and retraction direction of the adjusting rod 3, and the width of the guide groove 22 is just equal to the diameter of the screw head, so that the side wall of the screw head slides against the groove wall of the guide groove 22. In order to reduce friction, a smooth film or other structure can also be provided on the groove wall of the guide groove 22.

[0067] Optionally, the connecting device further includes an elastic part 7. The elastic part 7 is disposed on the adjusting rod 3; wherein, the inner side wall of the second connecting rod 2 is provided with a limiting hole 23 that engages with the elastic part 7.

[0068] Specifically, an elastic part 7 is provided on the side wall of the adjusting rod 3. The elastic part 7 can be a structure with a certain elasticity, such as a glass bead. The end of the elastic part 7 near the second connecting rod 2 is spherical to facilitate its adaptation to the limiting hole 23. Multiple elastic parts 43 can be provided at intervals. In this embodiment, two elastic parts 7 are provided and are distributed at intervals on both sides of the guide part 6 along the width direction of the adjusting rod 3. Two limiting holes 23 are provided on the inner side wall of the second connecting rod 2 at the position corresponding to the slot 31, so that when the adjusting rod 3 is locked, the elastic part 7 can be engaged in the limiting hole 23.

[0069] Optionally, the first connecting block 11 is rotatably connected to the first connecting rod 1.

[0070] Specifically, a pivot is provided at the end of the first connecting rod 1, and the first connecting block 11 is rotatably connected to the pivot to facilitate adjustment of the orientation of the first connecting block 11. Similarly, the second connecting block 21 can also adopt the same structure and be rotatably connected to the second connecting rod 2.

[0071] Optionally, at least one of the first connecting rod 1 and the second connecting rod 2 is rotatably connected to the support rod 5.

[0072] Specifically, taking the fixed connection of the first connecting rod 1 and the support rod 5 as an example, the second connecting rod 2 is rotatably connected to the support rod 5 via a hinge, so as to adjust the included angle between the first connecting rod 1 and the second connecting rod 2, and at the same time, to facilitate folding and storing the first connecting rod 1 and the second connecting rod 2 after disassembly. It should be understood that the first connecting rod 1 can also be rotatably connected to the support rod 5, while the second connecting rod 2 can be fixedly connected to the support rod 5, or both the first connecting rod 1 and the second connecting rod 2 can be rotatably connected to the support rod 5 at the same time. This application does not limit this.

[0073] Reference Figure 1 The support unit includes a support rod 5 and multiple connecting devices as described above. The multiple connecting devices are spaced apart on the support rod 5 and connected to the display device.

[0074] When installed outdoors, this support unit can quickly adapt to different types of display devices using the connecting device, thereby effectively improving the adaptability of the support unit and simplifying the installation and disassembly process, thus effectively improving the installation and disassembly efficiency.

[0075] Optionally, the support unit includes a first connector 8 and a second connector 9. The first connector 8 is disposed at one end of the support rod 5; the second connector 9 is disposed at the other end of the support rod 5 and is inserted and fixed to the first connector 8.

[0076] Specifically, the first connector 8 is cylindrical and can be inserted into a protrusion inside the second connector 9. The second connector 9 is at least partially rotatable to lock the protrusion of the first connector 8. This locking and tightening of adjacent support rods 5 via the first connector 8 and the second connector 9 not only further improves the assembly and disassembly efficiency of the support unit but also allows the fixing structure to be placed internally, thereby improving overall neatness.

[0077] Reference Figure 6 The wind-resistant frame is used to fix the display device in place, and it includes multiple support units as described above. The multiple support units are spliced ​​together in sequence and fixedly connected to the display device.

[0078] When the wind-resistant frame is installed outdoors, two adjacent support units can be quickly assembled. Each support unit can also be fixedly connected to the display device through the connecting device, thereby reducing the number of bolts that need to be tightened during the installation process, effectively reducing the difficulty of installation and disassembly, and improving the efficiency of installation and disassembly of the display device.

[0079] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A connection device, characterized in that The connecting device comprises: a first connecting rod (1) connected with a support rod (5) at one end and provided with a first connecting block (11) fixedly connected with a display device at the other end; a second connecting rod (2) connected with the support rod (5) at one end and extending away from the first connecting rod (1) at the other end; an adjusting rod (3) slidably connected with the second connecting rod (2) at one end and provided with a second connecting block (21) fixedly connected with the display device at the other end extending out of the second connecting rod (2); a locking assembly (4) arranged on the second connecting rod (2) and capable of partially extending into the second connecting rod (2) and abutting against the adjusting rod (3) to lock the adjusting rod (3).

2. The connection device according to claim 1, characterized in that The locking assembly (4) comprises: a locking seat (41) arranged on the second connecting rod (2); a locking part (42) slidably connected with the locking seat (41) and capable of abutting against the adjusting rod (3) at one end extending through the locking seat (41) and the second connecting rod (2).

3. The connection device according to claim 2, characterized in that The adjusting rod (3) is provided with a plurality of clamping grooves (31) along the sliding direction for the locking part (42) to insert.

4. The connection device of claim 2, wherein The locking assembly (4) further comprises: a resilient member (43) abutting against the locking part (42) at one end and abutting against the locking seat (41) at the other end to push the locking part (42) away from the adjusting rod (3); a fixed cam (44) rotatably connected with the locking seat (41) and abutting against the locking part (42) away from the adjusting rod (3), the fixed cam (44) being used to push the locking part (42) to extend through the locking seat (41) and the second connecting rod (2).

5. The connection device according to any one of claims 1 to 4, characterized in that The connecting device further comprises: a guide part (6) arranged on the adjusting rod (3), the second connecting rod (2) being provided with a guide groove (22), the guide part (6) at least partially extending into the guide groove (22) and slidably matched with the guide groove (22).

6. The connection device according to any one of claims 1 to 4, characterized in that The connecting device further comprises: a resilient part (7) arranged on the adjusting rod (3); wherein an inner side wall of the second connecting rod (2) is provided with a limiting hole (23) for clamping the resilient part (7).

7. The connection device according to any one of claims 1 to 4, characterized in that The first connecting block (11) is rotatably connected with the first connecting rod (1); and / or The second connecting block (21) is rotatably connected with the second connecting rod (2); and / or At least one of the first connecting rod (1) and the second connecting rod (2) is rotatably connected with the support rod (5).

8. Support unit, characterized in that The connecting device comprises: a support rod (5); a plurality of connecting devices as claimed in any one of claims 1 to 7 are arranged at intervals on the support rod (5) and connected with the display device.

9. The support unit according to claim 8, characterized in that The support unit comprises: a first connector (8) arranged on one end of the support rod (5); a second connector (9) arranged on the other end of the support rod (5) and fixedly connected with the first connector (8).

10. A windbreak, characterised in that The support unit comprises: a plurality of support units as claimed in claim 8 or 9 are sequentially spliced and fixedly connected with the display device. The support unit comprises: a plurality of support units as claimed in claim 8 or 9 are sequentially spliced and fixedly connected with the display device.

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