Installation device and display screen

Abstract

An installation device and a display screen are disclosed. The installation device includes a first mounting base, a second mounting base, and a third mounting base. The second and third mounting bases are movably mounted on both sides of the first mounting base and can be adjusted according to the curvature of the display screen. An adjustment mechanism is connected between the first mounting base and the second and third mounting bases. One end of the adjustment mechanism is rotatably connected to the second and third mounting bases, and the other end of the adjustment mechanism is retractably disposed within the first mounting base so that the angle of the second and third mounting bases relative to the first mounting base can be adjusted by the length of the extension of the adjustment mechanism.

Description

Technical Field

[0001] This utility model relates to the field of LED display technology, and in particular to an installation device and a display screen. Background Technology

[0002] With the development of commercial LED leasing, leased LED displays need to meet various customer usage needs through installation devices, such as ground stacking and high-altitude hoisting. However, most existing installation devices are designed for straight-edge displays and cannot be used for stacking or hoisting curved displays. Alternatively, corresponding angle adjustment blocks need to be replaced to be suitable for stacking or hoisting curved displays, thereby reducing the installation efficiency of the displays. Utility Model Content

[0003] This utility model provides an installation device and a display screen, which aims to solve at least one of the technical problems existing in the prior art.

[0004] According to a first aspect of the present invention, the present invention provides an installation device for fixing a display screen. The installation device includes a first mounting base, a second mounting base, and a third mounting base. The second mounting base and the third mounting base are movably installed on both sides of the first mounting base and can be adjusted according to the curvature of the display screen.

[0005] An adjustment mechanism is connected between the first mounting base, the second mounting base, and the third mounting base. One end of the adjustment mechanism is rotatably connected to the second mounting base and the third mounting base, and the other end of the adjustment mechanism is telescopically disposed in the first mounting base so that the angle of the second mounting base and the third mounting base relative to the first mounting base can be adjusted by the length of the extension of the adjustment mechanism.

[0006] In the installation device according to one embodiment of the present invention, the second mounting base and the third mounting base are provided with an outwardly protruding arc-shaped portion on the side facing the first mounting base, and the inner side of the arc-shaped portion is connected to the inner side of the second mounting base and the third mounting base through a slope structure.

[0007] In the installation device of one embodiment of the present invention, the adjustment mechanism includes a rotating seat and a connecting rod. The rotating seat is rotatably installed at both ends of the first mounting seat. One end of the connecting rod is rotatably connected to the second mounting seat and the third mounting seat. The other end of the connecting rod is telescopically installed in the rotating seat.

[0008] In one embodiment of the installation device of this utility model, the adjustment mechanism further includes a handle assembly, which is mounted on the rotating seat and used to lock or unlock the length of the connecting rod extending out of the rotating seat, so as to control the included angle between the second and third mounting seats and the first mounting seat.

[0009] In an installation device according to one embodiment of the present invention, the handle assembly includes an adjusting handle, a transmission pin, and a stop member with adjusting teeth. The connecting rod is provided with a rack structure. The adjusting handle is connected to the stop member through the transmission pin. The adjusting teeth are used to engage or disengage with the rack structure.

[0010] In one embodiment of the installation device of this utility model, the rotating seat is provided with a first groove and a second groove arranged perpendicular to the first groove. The connecting rod passes through the first groove. One end of the transmission pin is connected to the adjusting handle, and the other end of the transmission pin passes through the connecting rod and is connected to the stop. The stop is movably installed in the second groove.

[0011] In the installation device of one embodiment of the present invention, the adjusting handle is provided with a cam structure. The cam structure has a rotating hole, a nearest point and a farthest point. The rotating hole is rotatably connected to the transmission pin. The nearest point and the farthest point are spaced apart on the periphery of the cam structure and are used to abut or separate from the rotating seat when the cam structure rotates.

[0012] In one embodiment of the installation device of this utility model, the adjustment mechanism further includes a reinforcing block, the first mounting base is provided with a connecting groove, the reinforcing block is accommodated in the connecting groove, and the upper end of the rotating base is rotatably connected to the reinforcing block.

[0013] The first mounting base has sliding groove structures on both sides, and the connecting rod passes through one end of the rotating base and is slidably mounted in the sliding groove structure; and / or,

[0014] The second and third mounting bases are provided with connecting holes coaxially arranged with the arc-shaped portion, and the connecting rod is rotatably installed in the connecting holes; and / or,

[0015] The radius of the arc-shaped portion is in the range of 20mm to 30mm.

[0016] In one embodiment of the installation device of this utility model, a connecting pipe is provided on the side of the first mounting base for connecting to a stacking support or a lifting beam structure; and / or,

[0017] One of the second and third mounting bases is provided with a side connecting lock, and the other of the second and third mounting bases is provided with a side connecting seat. The side connecting lock cooperates with the side connecting seat to enable the splicing of two adjacent mounting devices; and / or,

[0018] Both the second and third mounting bases are provided with upper and lower locking seats and upper and lower locking bodies, wherein the upper and lower locking seats and the upper and lower locking bodies are coaxially arranged along the height direction of the mounting device; and / or,

[0019] The mounting device further includes a lifting ring disposed on top of the first mounting base; and / or,

[0020] The mounting device further includes support feet disposed at the bottom of the second and third mounting bases; and / or,

[0021] The mounting device further includes a magnetic suction element, which is disposed on the upper and lower end faces of the second and third mounting bases.

[0022] According to a second aspect of the present invention, the present invention also provides a display screen, including a display screen body and the aforementioned mounting device, wherein the display screen body is mounted on the mounting device.

[0023] The technical solution provided in this application embodiment can include the following beneficial effects: This application designs an installation device and a display screen. The installation device includes a first mounting base, a second mounting base, and a third mounting base. The second and third mounting bases are movably installed on both sides of the first mounting base and can be adjusted according to the curvature of the display screen, effectively solving the installation adaptation problem of curved display screens. An adjustment mechanism is connected between the first mounting base and the second and third mounting bases. One end of the adjustment mechanism is rotatably connected to the second and third mounting bases, and the other end is retractably disposed within the first mounting base. This allows the angle of the second and third mounting bases relative to the first mounting base to be adjusted by the length of the extended adjustment mechanism, adapting to display screens with different curvatures. This achieves tool-free adjustment; during installation, only pushing and pulling the adjustment mechanism is needed to automatically match the curvature of the display screen, improving the adaptability of the installation device. Simultaneously, the symmetrical adjustment structure formed by the first mounting base and the second and third mounting bases on both sides eliminates the need to replace different angle adjustment blocks due to inability to adjust, reducing the time required for angle adjustment block replacement and improving the installation efficiency of the display screen.

[0024] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0025] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a schematic diagram of the installation device provided in one embodiment of this application;

[0027] Figure 2 yes Figure 1 A schematic diagram of the installation device from another angle;

[0028] Figure 3 yes Figure 2 A cross-sectional schematic diagram of the installation device in the middle;

[0029] Figure 4 yes Figure 2 An exploded view of the installation device;

[0030] Figure 5 yes Figure 4 Partial exploded view of the installation device;

[0031] Figure 6 yes Figure 5 An exploded view of the regulating mechanism;

[0032] Figure 7 yes Figure 4 A schematic diagram of the structure of the second mounting base;

[0033] Figure 8 yes Figure 4 A schematic diagram of the structure of the third mounting base.

[0034] Explanation of reference numerals in the attached figures:

[0035] 10. First mounting base; 11. First base body; 112. Rotating groove; 113. Connecting groove; 111. Sliding groove structure; 13. Connecting pipe; 12. First cover plate;

[0036] 20. Second mounting base; 21. Second base body; 211. First connecting hole; 212. First arc-shaped portion; 22. Side connecting lock; 23. Upper and lower lock bases; 24. Upper and lower lock bodies;

[0037] 30. Third mounting base; 31. Third base body; 311. Second connecting hole; 312. Second arc-shaped portion; 32. Side connecting base;

[0038] 40. Adjusting mechanism; 41. Rotating seat; 411. First groove; 412. Second groove; 42. Connecting rod; 421. Rack and pinion structure; 422. Scale; 43. Handle assembly; 431. Adjusting handle; 4311. Cam structure; 432. Stop; 433. Transmission pin; 434. Elastic element; 44. Reinforcing block;

[0039] 50. Hanging ring; 60. Support leg; 70. Magnetic attachment. Detailed Implementation

[0040] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0041] It should also be understood that the terminology used in this utility model specification is merely for describing specific aspects of the present application. It is important to understand that terms such as "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present application and simplifying the description, 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 the present application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0042] The following detailed description of some embodiments of this application is provided in conjunction with the accompanying drawings. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0043] like Figures 1 to 8 As shown, according to a first aspect of this application, this application provides an installation device for fixing a display screen, mainly designed for fixing straight-edge and curved display screens. The installation device includes a first mounting base 10, a second mounting base 20, and a third mounting base 30. The second mounting base 20 and the third mounting base 30 are movably mounted on both sides of the first mounting base 10 and can be adjusted according to the curvature of the display screen. This allows for adjustment via the second mounting base 20 and the third mounting base 30 on both sides of the first mounting base 10, thereby adapting to display screens with different curvatures, providing stronger compatibility, and effectively solving the installation adaptation problem of curved display screens.

[0044] In one alternative implementation, such as Figures 1 to 4As shown, an adjustment mechanism 40 is connected between the first mounting base 10, the second mounting base 20, and the third mounting base 30. One end of the adjustment mechanism 40 is rotatably connected to the second mounting base 20 and the third mounting base 30, and the other end of the adjustment mechanism 40 is retractably disposed within the first mounting base 10. This allows the angle of the second mounting base 20 and the third mounting base 30 relative to the first mounting base 10 to be adjusted by extending the adjustment mechanism 40, thus adapting to displays with different curvatures and achieving tool-free adjustment. During installation, simply pushing or pulling the adjustment mechanism 40 is sufficient to automatically match the curvature of the display screen, improving the adaptability of the installation device. At the same time, the symmetrical adjustment structure formed by the first mounting base 10 and the second mounting base 20 and the third mounting base 30 disposed on both sides eliminates the need to replace different angle adjustment blocks due to inability to adjust, reducing the time required for adjusting the angle blocks and improving the installation efficiency of the display screen.

[0045] By adopting the above technical solution, this application, through the combination of the first mounting base 10, the second mounting base 20, and the third mounting base 30 into an adjustable three-section structure, can not only meet the fixing requirements of straight-edge displays but also the fixing requirements of curved displays, solving the long-standing problem of installation adaptation for curved displays in the industry. Furthermore, this application employs an adjustment mechanism 40 combining a rotating connection and a telescopic structure, enabling tool-free adjustment of the installation device. This allows for automatic matching of the display curvature through push-pull operation, significantly improving the convenience of display installation. It eliminates the time required to replace different angle adjustment blocks in existing technologies, improving the adaptability of the installation device and increasing installation efficiency by at least 40%.

[0046] In one alternative implementation, such as Figures 4 to 8 As shown, the second mounting base 20 and the third mounting base 30 have outwardly protruding arc-shaped portions on the side facing the first mounting base 10. The inner side of the arc-shaped portion is connected to the inner side of the second mounting base 20 and the third mounting base 30 through a sloping structure to prevent the second mounting base 20 and the third mounting base 30 from interfering with the first mounting base 10 during rotation relative to the first mounting base 10. The rotation range of its inner and outer sides can reach 45 degrees, thereby accurately matching the curvature radius of the display screen, while enhancing structural stability and ease of operation.

[0047] For example, the arc-shaped portion includes a first arc-shaped portion 212 and a second arc-shaped portion 312. The first arc-shaped portion 212 is formed on the side of the second mounting base 20 facing the first mounting base 10, and the second arc-shaped portion 312 is formed on the side of the third mounting base 30 facing the first mounting base 10. This prevents the second mounting base 20 and the third mounting base 30 from interfering with the first mounting base 10 during rotation, facilitates the application of force when adjusting by hand, and enhances structural stability and ease of operation.

[0048] In an optional embodiment, the adjustment mechanism 40 includes a rotating seat 41 and a connecting rod 42. The rotating seat 41 is rotatably mounted at both ends of the first mounting seat 10. One end of the connecting rod 42 is rotatably connected to the second mounting seat 20 and the third mounting seat 30. The other end of the connecting rod 42 is telescopically mounted in the rotating seat 41. Through the ingenious combination of mechanical structures, the industry pain point of curved screen adaptation is solved.

[0049] For example, when the mounting device is adapted to a straight-edge display screen, it is only necessary to ensure that the second mounting base 20 and the third mounting base 30 are on the same straight line as the first mounting base 10. That is, there is a first hinge point between the connecting rod 42 and the second mounting base 20, a second hinge point between the connecting rod 42 and the third mounting base 30, and a third and fourth hinge point between the first mounting base 10 and the two rotating seats 41. The first, second, third, and fourth hinge points are collinear. When the mounting device is adapted to a curved display screen, the connecting rod 42 is stretched or compressed to change the distance between the second mounting base 20 and the third mounting base 30 and the first mounting base 10. This causes the second mounting base 20 and the third mounting base 30 to rotate around the first, second, third, and / or fourth hinge points due to the change in the length of the connecting rod 42, until they fit the curvature of the display screen, thereby completing the angle adjustment of the mounting device.

[0050] In an optional embodiment, a scale 422 is provided on the connecting rod 42 to assist in the accuracy of the installation device in the curvature adjustment.

[0051] In an optional embodiment, the adjusting mechanism 40 further includes a handle assembly 43 mounted on the rotating seat 41. The handle assembly 43 is used to lock or unlock the extension of the connecting rod 42 beyond the rotating seat 41, thereby controlling the angle between the second mounting seat 20 and the third mounting seat 30 and the first mounting seat 10, improving the operability and locking reliability of the adjusting mechanism 40. Specifically, by moving the handle assembly 43 to the unlocked position, the connecting rod 42 can freely extend and retract, allowing manual pushing and pulling of the second mounting seat 20 and the third mounting seat 30, causing the connecting rod 42 to slide out or retract into the rotating seat 41. Releasing the handle assembly 43 or moving it to the locked position locks the connecting rod 42 onto the rotating seat 41.

[0052] In an optional embodiment, the handle assembly 43 includes an adjusting handle 431, a transmission pin 433, and a stop 432 with adjusting teeth. The connecting rod 42 is provided with a rack structure 421. The adjusting handle 431 is connected to the stop 432 via the transmission pin 433. The adjusting teeth are used to engage or disengage with the rack structure 421 to achieve segmented locking of the connecting rod 42.

[0053] In an optional embodiment, the handle assembly 43 includes an elastic element 434, which is sleeved on the outside of the connecting rod 42. One end of the elastic element 434 abuts against the stop 432, and the other end of the elastic element 434 abuts against the rotating seat 41. When the handle assembly 43 is moved to the unlocked position, the stop 432 is moved away from and separated from the rack structure 421, thereby facilitating the free extension and retraction of the connecting rod 42.

[0054] In an optional embodiment, the rotating seat 41 is provided with a first groove 411 and a second groove 412 perpendicular to the first groove 411. The connecting rod 42 passes through the first groove 411. One end of the transmission pin 433 is connected to the adjusting handle 431, and the other end of the transmission pin 433 passes through the connecting rod 42 and is connected to the stop member 432. The stop member 432 is movably installed in the second groove 412. This not only constrains the width and height directions of the connecting rod 42, so that the connecting rod 42 can only slide along its length direction, but also restricts the stop member 432 in the length and height directions, thereby ensuring that when the stop member 432 moves in the width direction, its adjusting teeth and the rack structure 421 always remain engaged.

[0055] In an optional embodiment, the adjusting handle 431 is provided with a cam structure 4311. The cam structure 4311 has a rotating hole, a nearest point, and a farthest point. The rotating hole is rotatably connected to the transmission pin 433. The nearest point and the farthest point are spaced apart on the periphery of the cam structure 4311, and are used to abut or separate from the rotating seat 41 when the cam structure 4311 rotates. The distance from the nearest point to the rotating hole is a first preset distance, and the distance from the farthest point to the rotating hole is a second preset distance. The first preset distance is less than the second preset distance.

[0056] In an optional embodiment, the adjusting mechanism 40 further includes a reinforcing block 44. The first mounting base 10 is provided with a connecting groove 113, and the reinforcing block 44 is accommodated in the connecting groove 113. The upper end of the rotating base 41 is rotatably connected to the reinforcing block 44 so that when the mounting device is used as a lifting beam, the reinforcing block 44 can increase the contact surface between the rotating base 41 and the first mounting base 10, disperse the tension transmitted by the connecting rod 42, and avoid stress concentration.

[0057] In an optional embodiment, the first mounting base 10 is further provided with a rotating groove 112, and the lower end of the rotating base 41 is rotatably mounted in the rotating groove 112.

[0058] In an optional embodiment, the first mounting base 10 is provided with a sliding groove structure 111 on both sides, and the connecting rod 42 is slidably installed in the sliding groove structure 111 through one end of the rotating base 41, ensuring that the connecting rod 42 moves only in a predetermined direction and preventing deviation or torsion during the movement.

[0059] In an optional embodiment, the second mounting base 20 and the third mounting base 30 are provided with connecting holes coaxially arranged with the arc-shaped portion, and the connecting rod 42 is rotatably installed in the connecting holes to ensure that the rotation center of the second mounting base 20 and the third mounting base 30 coincides with the geometric curvature center of the display screen, thereby avoiding local stress during installation.

[0060] For example, the connection holes include a first connection hole 211 and a second connection hole 311. The first connection hole 211 is formed on the side of the second mounting base 20 near the first arcuate portion 212, and the second connection hole 311 is formed on the side of the third mounting base 30 near the second arcuate portion 312, so that one of the connecting rods 42 can rotate freely in the first connection hole 211 and the other connecting rod 42 can rotate freely in the second connection hole 311, thereby allowing the second mounting base 20 and the third mounting base 30 to adaptively adjust their angles according to the curvature of the display screen.

[0061] In an optional embodiment, the side of the first mounting base 10 is provided with a connecting pipe 13, which is used to connect to the stacking support or the lifting beam structure.

[0062] In one optional embodiment, the radius of the arc portion is in the range of 20mm to 30mm. This not only accommodates the yield strength of the aluminum alloy die casting, enabling it to withstand the lateral moment of a 55kg display screen, but also prevents the parting line from affecting the structural strength of the second mounting base 20 and the third mounting base 30. Preferably, the radius of the arc portion is 25mm ± 1mm ​​to optimize the bending moment distribution.

[0063] In one optional embodiment, one of the second mounting base 20 and the third mounting base 30 is provided with a side connection lock 22, and the other of the second mounting base 20 and the third mounting base 30 is provided with a side connection seat 32. The side connection lock 22 cooperates with the side connection seat 32 to realize the splicing of two adjacent mounting devices.

[0064] For example, the second mounting base 20 includes a second base body 21, the third mounting base 30 includes a third base body 31, the side connection lock 22 is installed on the side of the second base body 21 away from the first mounting base 10, the side connection seat 32 is installed on the side of the third base body 31 away from the first mounting base 10, and the position of the side connection lock 22 corresponds to the position of the side connection seat 32 so that when two adjacent mounting devices are spliced, the side connection lock 22 can be connected to the side connection seat 32.

[0065] In one alternative implementation, such as Figures 2 to 8As shown, both the second mounting base 20 and the third mounting base 30 are provided with upper and lower locking seats 23 and upper and lower locking bodies 24. The upper and lower locking seats 23 and the upper and lower locking bodies 24 are coaxially arranged along the height direction of the mounting device. The upper and lower locking seats 23 are used to connect the mounting device with the cabinet connecting lock on the cabinet structure of the display screen during hoisting. The upper and lower locking bodies 24 are used to connect the mounting device with the cabinet locking seat on the cabinet structure of the display screen during stacking.

[0066] In an optional embodiment, the mounting device further includes a support foot 60 disposed at the bottom of the second mounting base 20 and the third mounting base 30.

[0067] In an optional embodiment, the mounting device further includes a magnetic suction element 70, which is disposed on the upper and lower end faces of the second mounting base 20 and the third mounting base 30, and serves as a pre-positioning element when connected to the cabinet structure of the display screen.

[0068] In an alternative embodiment, the mounting device further includes a lifting ring 50 disposed on top of the first mounting base 10.

[0069] In an optional embodiment, the first mounting base 10 includes a first base body 11 and a first cover plate 12, an adjustment mechanism 40 is disposed in the cavity formed by the first base body 11, the first cover plate 12 covers the opening of the cavity, and a connecting pipe 13 is disposed on the outside of the first cover plate 12.

[0070] like Figures 1 to 8 As shown, according to a second aspect of this application, this application provides a display screen, including a display screen body and the aforementioned mounting device, wherein the display screen body is mounted on the mounting device.

[0071] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection. 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, and they can refer to the internal communication of two components or the interaction between two components. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0072] In this application, unless otherwise expressly 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 being 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 being 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.

[0073] The foregoing disclosure provides many different embodiments or examples for implementing different structures of this application. To simplify the disclosure, specific examples of components and arrangements are described above. Of course, these are merely examples and are not intended to limit the scope of this application. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this application, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with an embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

Claims

1. A mounting device for fixing a display screen, characterized in that, The mounting device includes a first mounting base, a second mounting base, and a third mounting base. The second mounting base and the third mounting base are movably mounted on both sides of the first mounting base and can be adjusted according to the curvature of the display screen. An adjustment mechanism is connected between the first mounting base, the second mounting base, and the third mounting base. One end of the adjustment mechanism is rotatably connected to the second mounting base and the third mounting base, and the other end of the adjustment mechanism is telescopically disposed in the first mounting base so that the angle of the second mounting base and the third mounting base relative to the first mounting base can be adjusted by the length of the extension of the adjustment mechanism.

2. The installation device according to claim 1, characterized in that, The second and third mounting bases have outwardly protruding arc-shaped portions on the side facing the first mounting base, and the inner side of the arc-shaped portions is connected to the inner side of the second and third mounting bases through a slope structure.

3. The installation device according to claim 2, characterized in that, The adjustment mechanism includes a rotating seat and a connecting rod. The rotating seat is rotatably mounted at both ends of the first mounting seat. One end of the connecting rod is rotatably connected to the second and third mounting seats, and the other end of the connecting rod is retractably mounted in the rotating seat.

4. The installation device according to claim 3, characterized in that, The adjustment mechanism further includes a handle assembly mounted on the rotating seat for locking or unlocking the length of the connecting rod extending from the rotating seat, thereby controlling the angle between the second and third mounting seats and the first mounting seat.

5. The installation device according to claim 4, characterized in that, The handle assembly includes an adjusting handle, a transmission pin, and a stop with adjusting teeth. The connecting rod is provided with a rack structure. The adjusting handle is connected to the stop via the transmission pin. The adjusting teeth are used to engage or disengage with the rack structure.

6. The installation device according to claim 5, characterized in that, The rotating seat is provided with a first groove and a second groove arranged perpendicular to the first groove. The connecting rod passes through the first groove. One end of the transmission pin is connected to the adjusting handle, and the other end of the transmission pin passes through the connecting rod and is connected to the stop. The stop is movably installed in the second groove.

7. The installation device according to claim 5, characterized in that, The adjusting handle is provided with a cam structure, which has a rotating hole, a nearest point, and a farthest point. The rotating hole is rotatably connected to the transmission pin, and the nearest point and the farthest point are spaced apart on the periphery of the cam structure for contacting or separating from the rotating seat when the cam structure rotates.

8. The installation device according to claim 3, characterized in that, The adjustment mechanism further includes a reinforcing block. The first mounting base is provided with a connecting groove, the reinforcing block is accommodated in the connecting groove, and the upper end of the rotating base is rotatably connected to the reinforcing block. The first mounting base has sliding groove structures on both sides, and the connecting rod passes through one end of the rotating base and is slidably mounted in the sliding groove structure; and / or, The second and third mounting bases are provided with connecting holes coaxially arranged with the arc-shaped portion, and the connecting rod is rotatably installed in the connecting holes; and / or, The radius of the arc-shaped portion is in the range of 20mm to 30mm.

9. The installation device according to claim 1, characterized in that, The first mounting base has a connecting pipe on its side for connecting to a stacking support or lifting beam structure; and / or, One of the second and third mounting bases is provided with a side connecting lock, and the other of the second and third mounting bases is provided with a side connecting seat. The side connecting lock cooperates with the side connecting seat to enable the splicing of two adjacent mounting devices; and / or, Both the second and third mounting bases are provided with upper and lower locking seats and upper and lower locking bodies, wherein the upper and lower locking seats and the upper and lower locking bodies are coaxially arranged along the height direction of the mounting device; and / or, The mounting device further includes a lifting ring disposed on top of the first mounting base; and / or, The mounting device further includes support feet disposed at the bottom of the second and third mounting bases; and / or, The mounting device further includes a magnetic suction element, which is disposed on the upper and lower end faces of the second and third mounting bases.

10. A display screen, characterized in that, It includes a display screen body and a mounting device as described in any one of claims 1-9, wherein the display screen body is mounted on the mounting device.

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