Display device and adjustment assembly

Abstract

The utility model discloses a display device and an adjusting assembly, and relates to the technical field of LED display, the display device comprises a box body, a display module and a leveling structure, a containing cavity with an opening is formed in the box body, the display module is attached to the box body and is opposite to the containing cavity, and the leveling structure comprises a first connecting piece and a second connecting piece; the first connecting piece is arranged in the containing cavity and connected into the containing cavity. The second connecting piece is movably connected to the end, facing the opening, of the first connecting piece, the end, deviating from the first connecting piece, of the second connecting piece is used for magnetically attracting the display module, and the second connecting piece is driven to move relative to the first connecting piece so as to adjust the distance between the display module and the box body; according to the technical scheme, the adjustment convenience of the flatness of the display device can be improved, and the leveling efficiency of the display device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of LED display, in particular to a display device and an adjustment component. Background Art

[0002] In the related art, a large-area display screen is usually assembled from multiple display devices, wherein the display device usually includes a box and a display module. A receiving cavity with an opening on one side is formed in the box, and the display module is installed at the opening of the box to form the display surface of the display screen. During the assembly process of the display screen, there will be a certain degree of flatness problem between the boxes and display modules of the multiple display devices, which will affect the display effect of the display screen.

[0003] At present, the flatness of the display device is often adjusted by disassembling the display device to readjust the internal structure of the display device and adjusting the assembly position of the display module. However, the operation steps of this method are relatively cumbersome, and it is also impossible to intuitively judge the flatness of the display module after adjustment during the adjustment process. Repeated disassembly and adjustment are required, resulting in low leveling efficiency of the display device. Utility Model Content

[0004] The main purpose of the utility model is to provide a display device and an adjustment component, aiming to improve the convenience of adjusting the flatness of the display device and enhance the leveling efficiency of the display device.

[0005] To achieve the above-mentioned purpose, the display device proposed in the utility model includes a box, a display module and a leveling structure, wherein a receiving cavity with an opening is formed in the box, the display module is attached to the box and is opposite to the receiving cavity, and the leveling structure includes:

[0006] a first connecting member, the first connecting member being disposed in the accommodating cavity and connected to the accommodating cavity; and

[0007] The second connecting member is movably connected to one end of the first connecting member facing the opening, and one end of the second connecting member facing away from the first connecting member is used for magnetically attracting the display module. The second connecting member is driven to move relative to the first connecting member to adjust the distance between the display module and the box.

[0008] In one embodiment, a first magnetic member is provided at one end of the second connecting member facing away from the first connecting member, and the first magnetic member and the display module are magnetically matched;

[0009] The first magnetic member is used to rotate along the central axis of the second connecting member under the driving of an external magnetic force, so as to drive the second connecting member to rotate relative to the first connecting member.

[0010] In one embodiment, the first magnetic member is provided with an insertion hole, a magnetic adsorption body is provided on a side of the display module facing the accommodating cavity, and the insertion hole and the magnetic adsorption body are plugged and matched.

[0011] In one embodiment, one of a connecting column and a connecting hole is formed at one end of the first connecting member facing away from the bottom wall of the accommodating cavity, and the other of the connecting column and the connecting hole is formed at one end of the second connecting member facing the first connecting member;

[0012] The connecting column is provided with an external thread, and the connecting hole is provided with an internal thread that matches the external thread, so that the first connecting member and the second connecting member are threadedly connected.

[0013] In one embodiment, the leveling structure further includes an elastic member, wherein the elastic member is disposed between the first connecting member and the second connecting member and can drive the second connecting member to move away from the first connecting member.

[0014] In one embodiment, the connecting hole comprises a connecting section and a mounting section which are sequentially connected in a direction away from the first connecting member;

[0015] The connecting section is provided with the internal thread, and the elastic member is accommodated in the mounting section.

[0016] In one embodiment, a through hole is formed in the bottom wall of the accommodating cavity, and one end of the first connecting member facing away from the second connecting member is rotatably disposed in the through hole and exposed to the outside through the through hole.

[0017] In one embodiment, a connecting groove is formed at one end of the first connecting member facing away from the second connecting member.

[0018] The utility model also provides an adjustment component, which is applied to any one of the display devices described above;

[0019] The adjustment component is movably disposed outside the display device, and is used to provide a torsional force to one of the first connecting member and the second connecting member, so as to drive one of the first connecting member and the second connecting member to be rotatably disposed relative to the other one, so as to adjust the distance between the display module and the box.

[0020] In one embodiment, the adjustment assembly includes a first adjustment member, one end of which is provided with a second magnetic member, and the first adjustment member is movably arranged on a side of the display module away from the box body, so as to make the second magnetic member and the first magnetic member be arranged relative to each other;

[0021] The second magnetic member is used to apply an external magnetic force to the first magnetic member, so that the second connecting member rotates synchronously with the first adjusting member under the driving of the external magnetic force.

[0022] The display device of the technical solution of the utility model includes a box body, a display module and a leveling structure, wherein the leveling structure includes a first connecting member and a second connecting member that are movably connected, wherein one end of the first connecting member facing away from the second connecting member is connected to the accommodating cavity of the box body, and one end of the second connecting member facing away from the first connecting member is used for magnetically attracting the display module. With such an arrangement, the second connecting member can be driven to move relative to the first connecting member through an external adjustment component without disassembling the display device, so as to adjust the distance between the display module and the box body, thereby realizing the adjustment of the flatness of the display device, improving the convenience of adjusting the flatness of the display device, and being beneficial to improving the leveling efficiency of the display device. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of an application of an embodiment of a display device provided by the utility model;

[0025] Figure 2 for Figure 1 The exploded structure diagram of the display device;

[0026] Figure 3 for Figure 1 a cross-sectional view of the display device;

[0027] Figure 4 for Figure 3 A partial enlarged view of the middle A;

[0028] Figure 5 for Figure 1 Partial structural explosion diagram of the leveling structure;

[0029] Figure 6 for Figure 1 A cross-sectional structural diagram of a first connecting member of the middle leveling structure;

[0030] Figure 7 for Figure 1 A structural diagram of the first magnetic member of the second connecting member of the middle leveling structure;

[0031] Figure 8Structural schematic diagram of an embodiment of the adjustment component provided by the present utility model.

[0032] Explanation of the reference numerals in the drawings:

[0033] 100, display device; 10, leveling structure; 11, first connecting member; 111, connecting hole; 111a, connecting section; 111b, mounting section; 112, connecting groove; 12, second connecting member; 121, connecting post; 122, first magnetic member; 122a, jack; 13, elastic member; 20, box body; 21, through hole; 30, display module; 31, magnetic adsorbent.

[0034] 200, adjustment component; 210, first adjustment member; 211, second magnetic member; 220, second adjustment member.

[0035] The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the embodiments and the accompanying drawings. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0037] It should be noted that if there are directional indications (such as up, down, left, right, front, back,...) in the embodiments of the present utility model, the directional indications are only used to explain the relative positional relationship and movement conditions between components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0038] In addition, if there are descriptions such as "first" and "second" in the embodiments of the present utility model, the descriptions of "first" and "second" are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or a solution that satisfies both A and B at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present utility model.

[0039] In the related art, a large-area display screen is usually assembled by a plurality of display devices 100. Among them, the display device 100 generally includes a box body 20 and a display module 30. An accommodating cavity with an opening on one side is formed in the box body 20, and the display module 30 is installed at the opening of the box body 20 to form the display surface of the display screen. Due to the assembly tolerance during the assembly process of the display screen, there will be a certain degree of flatness problem between the box bodies 20 and the display modules 30 of the plurality of display devices 100. Moreover, the inevitable processing tolerance of the display device 100 will also cause flatness problems, resulting in many uneven light-emitting surfaces on the display screen instead of a whole display surface, which affects the display effect of the display screen.

[0040] Currently, the flatness of the display device 100 is usually adjusted by disassembling and assembling the display device 100 to readjust the internal structure of the display device 100 and then adjusting the assembly position of the display module 30. However, the operation steps of this method are relatively cumbersome, and it is also impossible to visually judge the flatness of the display module 30 after adjustment during the adjustment process. It is necessary to repeatedly disassemble and adjust, resulting in a low leveling efficiency of the display device 100.

[0041] The present utility model proposes a display device 100.

[0042] Please refer to Figures 1 to 8 , in an embodiment of the present utility model, the display device 100 includes a box body 20, a display module 30, and a leveling structure 10. An accommodating cavity with an opening is formed in the box body 20. The display module 30 is attached to the box body 20 and is opposite to the accommodating cavity. The leveling structure 10 includes:

[0043] A first connecting member 11, which is disposed in the accommodating cavity and connected inside the accommodating cavity; and

[0044] A second connecting member 12, which is movably connected to one end of the first connecting member 11 facing the opening. One end of the second connecting member 12 away from the first connecting member 11 is used to magnetically attract the display module 30. The second connecting member 12 is driven to move relative to the first connecting member 11 to adjust the distance between the display module 30 and the box body 20.

[0045] The display device 100 of the technical solution of the present utility model includes a box body 20, a display module 30, and a leveling structure 10. Among them, the leveling structure 10 includes a first connecting member 11 and a second connecting member 12 that are movably connected. One end of the first connecting member 11 facing away from the second connecting member 12 is connected to the accommodating cavity of the box body 20, and one end of the second connecting member 12 facing away from the first connecting member 11 is used to magnetically attract the display module 30. With such a setting, an external adjustment component 200 can drive the second connecting member 12 to move relative to the first connecting member 11 without disassembling the display device 100, so as to adjust the distance between the display module 30 and the box body 20, thereby realizing the adjustment of the flatness of the display device 100, improving the convenience of adjusting the flatness of the display device 100, and being beneficial to improving the leveling efficiency of the display device 100.

[0046] In addition, the technical solution of the present utility model adjusts the flatness of the display device 100 by realizing the method of disassembling and assembling the display device 100, which is also beneficial to avoiding damage to structures such as the LED lights of the display module 30 caused by disassembling and assembling the display device 100, and is beneficial to ensuring the service life of the display device 100. And because this method can conveniently adjust the flatness of the display device 100, it is also beneficial to relax the flatness tolerance of the display device 100 to a certain extent, thereby being beneficial to reducing the processing cost of the display device 100 and improving the production efficiency of the display device 100.

[0047] Please refer to Figures 2 to 7 , in the embodiment of the present utility model, a first magnetic member 122 is provided at one end of the second connecting member 12 facing away from the first connecting member 11, and the first magnetic member 122 is magnetically attracted and matched with the display module 30;

[0048] The first magnetic member 122 is used to rotate along the central axis of the second connecting member 12 under the drive of an external magnetic force, so as to drive the second connecting member 12 to rotate relative to the first connecting member 11.

[0049] Among them, the contact surface of the first magnetic member 122 and the display module 30 is arranged parallel to the display surface of the display module 30. In this way, it is beneficial to ensure the action effect of the external magnetic force on the first magnetic member 122.

[0050] In some embodiments, the first magnetic member 122 includes a first south pole region and a first north pole region, and the extending directions of the first south pole region and the first north pole region are arranged parallel to the central axis of the first connecting member 11; in this way, the magnetic force can better transmit torque, so that it is easy for the second connecting member 12 and the first connecting member 11 to rotate relative to each other.

[0051] Please refer to Figures 3 to 7, in an embodiment of the present utility model, the first magnetic member 122 is provided with a jack 122a. Preferably, the jack 122a is located at the central position of the first magnetic member 122. A magnetic adsorbent 31 is provided on one side of the display module 30 facing the accommodating cavity. The jack 122a and the magnetic adsorbent 31 are in plug-in fit, and the magnetic adsorbent 31 can be partially or entirely wrapped in the jack 122a.

[0052] Among them, the material of the magnetic adsorbent 31 can be iron or other ferromagnetic materials. When the magnetic adsorbent 31 and the jack 122a are in plug-in fit, the first magnetic member 122 can cover the periphery of the magnetic adsorbent 31. In this way, the first magnetic member 122 can be arranged close to the side of the display module 30, so as to be close to the adjustment component 200 located on the other side of the display module 30, which is beneficial to increasing the magnetic force of the external magnetic force exerted by the adjustment component 200 on the first magnetic member 122, so as to indirectly increase the torque, and thus it is easier for the second connecting member 12 to rotate relative to the first connecting member 11. At the same time, the display module 30 is closer to the box body 20, and the thickness of the entire display device 100 is smaller, realizing the thinning of the display device 100.

[0053] In some embodiments, a plurality of magnetic adsorbents 31 are provided on one side of the display module 30 facing the accommodating cavity. The plurality of magnetic adsorbents 31 can be arranged at intervals in sequence along the circumferential direction of the display module 30, or can be uniformly arranged on the module in other ways. Further, a plurality of first connecting members 11 and second connecting members 12 of the leveling structure 10 are provided, and each magnetic adsorbent corresponds to one first connecting member 11 and one second connecting member 12. Such an arrangement can realize the adjustment of the assembly positions of different parts of the display module 30.

[0054] In some embodiments, the first magnetic member 122 includes a first south pole region and a first north pole region. Correspondingly, the second magnetic member 211 includes a second south pole region and a second north pole region. The extending directions of the second south pole region and the second north pole region are parallel to the central axis of the second magnetic member 211. In this way, it is convenient for the first adjusting member 210 to provide a sufficient large magnetic moment to the second connecting member 12, so that the second rotating member can rotate relative to the first rotating member under the drive of the first adjusting member.

[0055] Please refer to Figures 2 to 7 , in an embodiment of the present utility model, one of the connecting post 121 and the connecting hole 111 is provided at one end of the first connecting member 11 away from the bottom wall of the accommodating cavity, and the other of the connecting post 121 and the connecting hole 111 is provided at one end of the second connecting member 12 facing the first connecting member 11;

[0056] The connecting column 121 is provided with an external thread, and the connecting hole 111 is provided with an internal thread that is threadedly engaged with the external thread, so that the first connecting member 11 and the second connecting member 12 are threadedly connected.

[0057] With such a setting, when rotation occurs between the first connecting member 11 and the second connecting member 12, relative rotation can occur between the connecting column 121 and the connecting hole 111, so that the connecting column 121 is screwed into or out of the connecting hole 111 to adjust the threaded connection depth between the first connecting member 11 and the second connecting member 12.

[0058] Please refer to Figures 3 to 5 , in an embodiment of the present invention, the leveling structure 10 further includes an elastic member 13, and the elastic member 13 is disposed between the first connecting member 11 and the second connecting member 12 and can drive the second connecting member 12 to move away from the first connecting member 11.

[0059] Among them, the elastic member 13 can be set as a spring. When the first connecting member 11 and the second connecting member 12 are threadedly connected, the spring can be kept in a compressed state to provide an elastic force for driving the second connecting member 12 to move away from the first connecting member 11, so as to facilitate the lifting of the first connecting seat towards the display module 30. Moreover, the elastic force provided by the spring member can be used as a pre-tightening force to make the threaded engagement between the connecting column 121 and the connecting hole 111 easier.

[0060] Please refer to Figures 3 to 5 , in an embodiment of the present invention, the connecting hole 111 includes a connecting section 111a and an installation section 111b that are sequentially connected in a direction away from the first connecting member 11;

[0061] The connecting section 111a is provided with the internal thread, and the elastic member 13 is accommodated in the installation section 111b.

[0062] Among them, by providing the internal thread only in a part of the connecting section 111a of the connecting hole 111, compared with the technical solution of providing the internal thread on the entire inner side wall of the connecting hole 111, while realizing the threaded connection between the connecting hole 111 and the connecting column 121, the biting area between the connecting hole 111 and the connecting column 121 can be reduced, so as to facilitate the relative rotation between the connecting column 121 and the connecting hole 111, thereby helping to avoid the situation where the torsional force provided by the adjustment assembly 200 is insufficient and the flatness cannot be adjusted. And, by accommodating the elastic member 13 in the installation section 111b of the connecting hole 111, the installation stability of the elastic member 13 can be improved through the limiting effect of the connecting hole 111 on the elastic member 13.

[0063] Please refer to Figure 3In an embodiment of the utility model, a through hole 21 is opened on the bottom wall of the accommodating cavity, and one end of the first connecting member 11 away from the second connecting member 12 is rotatably arranged in the through hole 21 and exposed to the outside through the through hole 21.

[0064] Such arrangement allows the end of the first connecting member 11 to protrude outward through the through hole 21 and be externally connected to the adjustment component 200, so that the adjustment component 200 disposed outside the display device 100 can be detachably connected to the first connecting member 11 to provide a torsional force to rotate the first connecting body.

[0065] See also Figure 3 and Figure 6 In an embodiment of the present utility model, a connecting groove 112 is formed at one end of the first connecting member 11 away from the second connecting member 12 .

[0066] The adjustment assembly 200 includes a second adjustment member 220 movably disposed on a side of the housing 20 away from the display module 30 , and configured to engage with the connecting groove 112 so that the first connecting member 11 and the second adjustment member 220 rotate synchronously.

[0067] In some embodiments, the connection slot 112 can be set in a hexagonal shape, and the second adjustment member 220 can be set as a hexagonal wrench. The shape of the end of the hexagonal wrench is adapted to the hexagon. In this way, the connector of the second adjustment member 220 can be plugged into the connection slot 112, so that the first connection member 11 can be driven to rotate by rotating the second adjustment member 220. Of course, the technical solution of the utility model is not limited to this, and the connection slot 112 can also be set in other shapes, and the end of the second adjustment member 220 is adapted to the shape of the corresponding connection slot 112. The specific implementation method can be set according to actual needs and is not limited here.

[0068] The utility model further proposes an adjustment component 200, which is applied to the display device 100. The specific structure of the display device 100 refers to the above embodiment. Since the adjustment component 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0069] Among them, the display device 100 includes the box body 20, the display module 30 and the leveling structure 10 in the foregoing embodiments. The leveling structure 10 includes a first connecting member 11 and a second connecting member 12 that are movably connected. The adjusting assembly 200 is movably disposed outside the display device 100 and is configured to provide a torsional force for one of the first connecting member 11 and the second connecting member 12, so as to drive one of the first connecting member 11 and the second connecting member 12 to be rotatably disposed relative to the other, so as to adjust the distance between the display module 30 and the box body 20.

[0070] Please refer to Figure 1 and Figure 8 , in an embodiment of the present invention, the adjusting assembly 200 includes a first adjusting member 210. A second magnetic member 211 is provided at one end of the first adjusting member 210. The first adjusting member 210 is movably disposed on a side of the display module 30 away from the box body 20 and is configured to make the second magnetic member 211 and the first magnetic member 122 disposed opposite to each other.

[0071] The second magnetic member 211 is configured to apply an external magnetic force to the first magnetic member 122, so that the second connecting member 12 rotates synchronously with the first adjusting member 210 under the drive of the external magnetic force.

[0072] Specifically, a first card slot is formed at one end of the first adjusting member 210, and at least a part of the second magnetic member 211 is received in the first card slot. Further, a first notch is formed on the groove wall of the first card slot, and a first protrusion is provided on the outer side wall of the second magnetic attracting member. The first protrusion and the first notch are inserted and matched, so that the second magnetic member 211 can rotate synchronously with the main body structure of the first adjusting member 210. At this time, the second connecting member 12 can be driven by the first adjusting member 210 to rotate relative to the first connecting member 11, thereby adjusting the distance between the display module 30 and the box body 20.

[0073] Certainly, the technical solution of the present invention is not limited thereto. Please refer to Figure 3, in some embodiments, the housing 20 is provided with a through hole 21. One end of the first connecting member 11 facing away from the second connecting member 12 is rotatably disposed in the through hole 21 and is exposed through the through hole 21. Moreover, a connecting groove 112 is further formed at one end of the first connecting member 11 facing away from the second connecting member 12. The adjusting assembly 200 further includes the second adjusting member 220 in the foregoing embodiments. The second adjusting member 220 is movably disposed on a side of the housing 20 facing away from the display module 30 and is used for plugging and matching with the connecting groove 112 so that the first connecting member 11 and the second adjusting member 220 can rotate synchronously. At this time, the first connecting member 11 can be driven by the second adjusting member 220 to rotate relative to the second connecting member 12, thereby adjusting the distance between the display module 30 and the housing 20. The specific implementation manner can be set according to actual requirements and is not limited herein.

[0074] The above are only exemplary embodiments of the present invention, and thus do not limit the patent scope of the present invention. Any equivalent structural transformation made under the technical concept of the present invention by using the content of the specification and drawings of the present invention, or direct / indirect application in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A display device, characterized in that: The display device includes a box, a display module and a leveling structure. A receiving cavity with an opening is formed in the box. The display module is attached to the box and faces the receiving cavity. The leveling structure includes: a first connecting member, the first connecting member being disposed in the accommodating cavity and connected to the accommodating cavity; and The second connecting member is movably connected to one end of the first connecting member facing the opening, and one end of the second connecting member facing away from the first connecting member is used for magnetically attracting the display module. The second connecting member is driven to move relative to the first connecting member to adjust the distance between the display module and the box.

2. The display device according to claim 1, wherein: A first magnetic member is disposed at one end of the second connecting member facing away from the first connecting member, and the first magnetic member and the display module are magnetically matched; The first magnetic member is used to rotate along the central axis of the second connecting member under the driving of an external magnetic force, so as to drive the second connecting member to rotate relative to the first connecting member.

3. The display device according to claim 2, wherein: The first magnetic member is provided with an insertion hole, and a magnetic adsorption body is provided on a side of the display module facing the accommodating cavity, and the insertion hole and the magnetic adsorption body are plugged and matched.

4. The display device according to any one of claims 1 to 3, characterized in that: One of a connecting column and a connecting hole is formed at one end of the first connecting member facing away from the bottom wall of the accommodating cavity, and the other of the connecting column and the connecting hole is formed at one end of the second connecting member facing the first connecting member; The connecting column is provided with an external thread, and the connecting hole is provided with an internal thread that matches the external thread, so that the first connecting member and the second connecting member are threadedly connected.

5. The display device according to claim 4, characterized in that The leveling structure further includes an elastic member, which is disposed between the first connecting member and the second connecting member and can drive the second connecting member to move away from the first connecting member.

6. The display device according to claim 5, characterized in that The connecting hole comprises a connecting section and a mounting section which are sequentially connected in a direction away from the first connecting member; The connecting section is provided with the internal thread, and the elastic member is accommodated in the mounting section.

7. The display device according to any one of claims 1 to 3, characterized in that: A through hole is formed on the bottom wall of the accommodating cavity, and one end of the first connecting member which is away from the second connecting member is rotatably arranged in the through hole and exposed to the outside through the through hole.

8. The display device according to claim 7, characterized in that A connecting groove is formed at one end of the first connecting member away from the second connecting member.

9. An adjustment component, characterized in that: Applicable to the display device according to any one of claims 1 to 8; The adjustment component is movably disposed outside the display device, and is used to provide a torsional force to one of the first connecting member and the second connecting member, so as to drive one of the first connecting member and the second connecting member to be rotatably disposed relative to the other one, so as to adjust the distance between the display module and the box.

10. The adjustment assembly according to claim 9, characterized in that The adjustment assembly comprises a first adjustment member, one end of which is provided with a second magnetic member, and the first adjustment member is movably arranged on a side of the display module away from the box body, so as to make the second magnetic member and the first magnetic member be arranged relative to each other; The second magnetic member is used to apply an external magnetic force to the first magnetic member, so that the second connecting member rotates synchronously with the first adjusting member under the driving of the external magnetic force.

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