Display device

Abstract

The utility model provides a display device. The display device comprises a display module; the supporting part comprises a back plate and a knapsack assembly, the back plate is located on the backlight side of the display module, the knapsack assembly comprises a knapsack frame and a knapsack rear cover, the knapsack frame is detachably connected to the back plate, the knapsack rear cover is detachably connected to the knapsack frame, and the knapsack rear cover is detachably connected to the knapsack frame. Wherein the back plate and the backpack assembly are made of metal materials. According to the display device provided by the embodiment of the invention, the overall structural design reliability of a display product is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, and particularly to a display device. Background Art

[0002] With the development of display technology, through the overall structural design and layout, it is a development trend to achieve the overall light weight, reliability and personalization of display products, especially for large-size products. Summary of the Utility Model

[0003] An embodiment of the present disclosure provides a display device, which improves the reliability of the overall structural design of the display product.

[0004] The technical solutions provided by the embodiments of the present disclosure are as follows:

[0005] A display device includes:

[0006] A display module; and

[0007] A support part, the support part includes a backplane and a backpack assembly, the backplane is located on the backlight side of the display module, the backpack assembly includes a backpack frame and a backpack back cover, the backpack frame is detachably connected to the backplane, the backpack back cover is detachably connected to the backpack frame, wherein both the backplane and the backpack assembly are made of metal materials.

[0008] Exemplarily, a hollow area is provided in the middle of the backpack frame, the backpack frame includes four frame bodies that are sequentially connected end to end to enclose the hollow area, the frame body is a profile structure with a cavity, the frame body at least includes a first part and a second part, along the direction perpendicular to the backplane, the first part and the second part are respectively located on opposite sides of the cavity, and the first part is located on the side of the second part close to the backplane, the first part is used to connect to the backplane, the second part is used to support and connect the backpack back cover; wherein, a first connection part is provided on the first part, a second connection part is provided on the backplane, and the first connection part and the second connection part are connected by a first connecting piece.

[0009] Exemplarily, the four frame bodies include a first frame body, a second frame body, a third frame body and a fourth frame body that are sequentially connected end to end; at least one of the first frame body and the third frame body further includes a third part and a fourth part, and the first part, the third part, the second part and the fourth part are sequentially connected to enclose the cavity;

[0010] And in the direction parallel to the back plate, the third part is located on the side of the cavity close to the hollow area. A first window communicating with the cavity is provided on the second part at a position opposite to the first connecting part, and a second window communicating with the cavity is provided on the third part at a position opposite to the first connecting part.

[0011] Exemplarily, the edge area of the backpack back cover includes a first side edge corresponding to the first frame body and a third side edge corresponding to the third frame body, wherein a magnetic connection is provided between the first side edge and the first frame body, and a magnetic connection is provided between the third side edge and the third frame body.

[0012] Exemplarily, first magnetic members are provided at the first side edge and the third side edge. Mounting holes are provided on the second parts of the first frame body and the third frame body, and second magnetic members are mounted in the mounting holes. A magnetic connection is provided between the first magnetic member and the second magnetic member.

[0013] Exemplarily, the four frame bodies include a first frame body, a second frame body, a third frame body, and a fourth frame body that are sequentially connected end to end. At least one of the second frame body and the fourth frame body further includes a fifth part. The first part, the fifth part, and the second part are sequentially connected to form a semi-enclosed shape to enclose the cavity. And in the direction parallel to the back plate, the fifth part is located on the side of the cavity close to the hollow area.

[0014] Exemplarily, heat dissipation holes are provided on the fifth part of at least one of the second frame body and the fourth frame body.

[0015] Exemplarily, the edge area of the backpack back cover includes a second side edge corresponding to the second frame body and a fourth side edge corresponding to the fourth frame body, wherein a snap connection is provided between the second side edge and the second frame body, and a connection is provided between the fourth side edge and the fourth frame body through a second connecting member.

[0016] Exemplarily, a snap edge is provided at an edge of the second part of the second frame body away from the fifth part. A snap member is mounted at the second side edge of the backpack back cover. The snap member has a slot facing the snap edge, and the snap edge snaps into the slot to provide a snap connection between the second side edge and the second frame body.

[0017] Exemplarily, a screw hole is provided at a position of the second part of the fourth frame body close to an edge away from the fifth part. A protruding stud is provided on a side surface of the backpack back cover facing the cavity. A connection is provided between the screw hole and the stud through the second connecting member.

[0018] Exemplarily, the support part further includes: a base assembly, the base assembly includes a base portion, a support portion, and a decorative plate, the support portion is inserted into the cavity of at least one of the first frame body and the third frame body, and a fifth connection portion is provided on the fourth part of at least one of the first frame body and the third frame body, a sixth connection portion is provided on the support portion, and a third connecting member is inserted through the fifth connection portion and the sixth connection portion, wherein the decorative plate is attached to the side of the fourth part away from the cavity and covers the third connecting member.

[0019] The beneficial effects brought by the embodiments of the present disclosure are as follows:

[0020] In the above solution, both the back plate and the backpack assembly in the support part of the display device are made of metal materials, which can achieve better heat dissipation, ensure the efficient heat conduction of the display device, improve the reliability of the overall structure, and further, the support part is split into at least a back plate, a backpack frame, and a backpack back cover that are detachably connected. In this way, the processing and forming difficulty can be reduced, and the overall machine cost can be reduced. Description of the Drawings

[0021] Figure 1 Showing an exploded view of the display device provided by the embodiments of the present disclosure;

[0022] Figure 2 Showing an external view of the front display surface of the display device provided by the embodiments of the present disclosure;

[0023] Figure 3 Showing a schematic structural diagram of the back surface of the display device provided by the embodiments of the present disclosure in a state where the backpack back cover is not provided;

[0024] Figure 4 Showing an external view of the back surface of the display device provided by the embodiments of the present disclosure;

[0025] Figure 5 Showing Figure 4 A sectional view taken along the line E-E in;

[0026] Figure 6 Showing Figure 5 A partial enlarged view of F in;

[0027] Figure 7 Showing Figure 4 A sectional view taken along the line D-D in;

[0028] Figure 8 Showing Figure 7 A partial enlarged view of G in;

[0029] Figure 9 Showing Figure 7 A partial enlarged view of H in;

[0030] Figure 10 View from the side showing Figure 2 ;

[0031] Figure 11 View showing Figure 10 sectional view taken along line C-C in

[0032] Figure 12 View showing Figure 11 partial enlarged view I in

[0033] Figure 13 front view showing the structure of the backplane frame provided in the embodiments of the present disclosure;

[0034] Figure 14 View showing Figure 13 sectional view taken along line A-A in

[0035] Figure 15 View showing Figure 14 partial enlarged view A in

[0036] Figure 16 View showing Figure 13 sectional view taken along line B-B in

[0037] Figure 17 View showing Figure 16 partial enlarged view B in

[0038] Figure 18 View showing Figure 16 partial enlarged view C in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0039] To make the objectives, technical solutions and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Apparently, the described embodiments are some, but not all, of the embodiments of the present disclosure. All other embodiments obtained by those of ordinary skill in the art based on the described embodiments of the present disclosure without creative efforts shall fall within the scope of protection of the present disclosure.

[0040] Unless otherwise defined, technical terms or scientific terms used in this disclosure shall have the ordinary meanings as understood by those of ordinary skill in the art to which this disclosure pertains. The terms "first", "second" and similar terms used in this disclosure do not denote any order, quantity or importance, but are only used to distinguish different components. Similarly, terms such as "a", "an" or "the" do not denote a quantity limitation, but mean that there is at least one. Terms such as "comprising" or "including" mean that the elements or items appearing before this term cover the elements or items listed after this term and their equivalents, without excluding other elements or items. Terms such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. Terms such as "upper", "lower", "left" and "right" are only used to represent relative positional relationships, and when the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0041] As Figures 1 to 4 shown, an embodiment of the present disclosure provides a display device, including a display module 100 and a support part 200. The display module 100 may include a display screen, a backlight source, etc. The support part 200 can support and fix the display module 100 to play a role in protecting the display module 100.

[0042] As Figure 3 shown, the display device may include a backpack system 300, and the backpack system 300 is a portable system. The backpack system 300 may include a power board assembly 310, an FPGA (Field-Programmable Gate Array) assembly 320, a frequency multiplier board assembly 330, a system board assembly 340, a speaker and control assembly 350, etc. All or part of these components may be uniformly arranged in the backpack system 300. The display module 100 may be connected to the components in the backpack system 300 through a connection line 110.

[0043] To achieve better heat dissipation, in some embodiments, as Figure 3 shown, the layout of the components in the backpack system 300 may be as follows: at least several components in the backpack system 300 are arranged at intervals in sequence. For example, as shown in the figure, the power board assembly 310, the FPGA assembly 320, the frequency multiplier board assembly 330, the system board assembly 340, and the speaker and control assembly 350 are arranged at intervals in sequence along a straight line direction, and heat dissipation components such as heat dissipation fans are provided on the components with large working heat.

[0044] As Figure 1As shown, the support part 200 includes a back plate 210 and a backpack component 220, and an externally docking port may be provided on the backpack component 220. The back plate 210 is located on the backlight side of the display module 100. The backpack component 220 includes a backpack frame 221 and a backpack back cover 222. The backpack frame 221 is detachably connected to the back plate 210, and the backpack back cover 222 is detachably connected to the backpack frame 221. Among them, both the back plate 210 and the backpack component 220 are made of metal materials.

[0045] In the above solution, both the back plate 210 and the backpack component 220 in the support part 200 of the display device are made of metal materials, which can achieve better heat dissipation, ensure efficient heat conduction of the display device, improve the reliability of the overall structure, and also split the support part 200 into at least the back plate 210, the backpack frame 221 and the backpack back cover 222 that are detachably connected. In this way, the processing and forming difficulty can be reduced, and the overall machine cost can be reduced.

[0046] In addition, as Figure 2 shown, in some embodiments, the backpack component 220 may further include a frame 240. The frame 240 is located on the peripheral side of the display module 100 and is connected to the back plate 210.

[0047] In some embodiments, in order to achieve better heat dissipation of each component in the backpack system, some components with relatively large working heat in the backpack system may also be in contact with the back plate 210 to conduct heat to the back plate 210.

[0048] For a display device, its assembly convenience is very important, and for high-end display devices, the requirement for the integrity of the appearance of the display device is getting higher and higher.

[0049] As Figure 4 and Figure 10 shown, in some application scenarios of the display device, the appearance surface of the display device may include a display front a, an upper surface b, a back surface c, a left side surface d, a right side surface e, and a lower surface f. In order to ensure the integrity of the appearance of the display device, the backpack component 220 may ensure no connection traces (such as no screw marks) on at least one of the display front a, the upper surface b, the back surface c, the left side surface d, and the right side surface e, that is, the connecting parts are not visible on the appearance surface of at least one of the display front a, the upper surface b, the back surface c, the left side surface d, and the right side surface e to keep the surface appearance flat, and a small number of connecting parts may be visible on the lower surface f in the usage state of the display device.

[0050] In some exemplary embodiments, as Figure 13As shown, the backpack frame 221 is a frame structure with a hollow area N in the middle. The backpack frame 221 includes four frames S, and the four frames S are sequentially connected end to end to enclose the hollow area N.

[0051] As Figures 13 to 16 shown, the frame S is a profile structure with a cavity M. The frame S at least includes a first part S1 and a second part S2. Along the direction perpendicular to the back panel 210, the first part S1 and the second part S2 are respectively located on opposite sides of the cavity M, and the first part S1 is located on the side of the second part S2 close to the back panel 210. The first part S1 is used to connect to the back panel 210, and the second part S2 is used to support and connect the backpack back cover 222. Among them, a first connection part P1 is provided on the first part S1, a second connection part P2 is provided on the back panel 210, and the first connection part P1 and the second connection part P2 are connected by a first connecting piece.

[0052] In the above solution, the frame S of the backpack frame 221 is made of a profile. The inside of the profile has a cavity M. The profile can be formed by enclosing a cavity M with several plates. A first connection part P1 is provided on the first part S1 that encloses the cavity M, and a second connection part P2 is provided on the back panel 210. The first connection part P1 and the second connection part P2 are connected by a first connecting piece to achieve a detachable connection between the frame S and the back panel 210. Since the frame S includes a first part S1 and a second part S2, the first part S1 is located on the side of the second part S2 close to the back panel 210 along the direction perpendicular to the back panel 210. That is to say, the first part S1 will not be exposed on the appearance surface. Therefore, the first connection part P1 is provided on the first part S1, and the first connecting piece is connected to the first connection part P1. In this way, the first connecting piece is inside, and from the appearance surface, the first connecting piece is not visible.

[0053] Exemplarily, one of the first connection part P1 and the second connection part P2 can be a stud structure with a screw hole, and the other can be a screw hole structure. The first connecting piece can be a screw. However, it is not limited thereto.

[0054] In some embodiments, as Figure 13As shown, the backpack frame 221 includes a first frame body 2211, a second frame body 2212, a third frame body 2213, and a fourth frame body 2214 that are sequentially connected end to end. In some application scenarios of the display device, taking the orientation in the usage state of the display device as an example, the first frame body 2211 and the third frame body 2213 can be the left frame body and the right frame body respectively, the second frame body 2212 can be the top frame body, and the fourth frame body 2214 can be the bottom frame body. However, it is not limited thereto.

[0055] It should be noted that the first part S1 is used to provide a connection surface for connecting the frame body S and the back plate 210, and the second part S2 is used to provide a support surface for supporting and fixing the backpack back cover 222.

[0056] In some embodiments, as Figure 15 shown, at least one of the first frame body 2211 and the third frame body 2213 further includes a third part S3 and a fourth part S4, and the first part S1, the third part S3, the second part S2, and the fourth part S4 are sequentially connected to enclose the cavity M;

[0057] And in the direction parallel to the back plate 210, the third part S3 is located on the side of the cavity M close to the hollow area N, a first window V1 communicating with the cavity M is opened at a position on the second part S2 opposite to the first connection part P1, and a second window V2 communicating with the cavity M is opened at a position on the third part S3 opposite to the first connection part P1.

[0058] Adopting the above solution, the first window V1 and the second window V2 are further provided on at least one of the first frame body 2211 and the third frame body 2213, and the first window V1 is opposite to the first connection part P1. In this way, the first connecting piece can be aligned with the first connection part P1 through the first window V1 for connection, and the second window V2 is convenient for the operator to observe the connection and assembly process of the first connecting piece and the first connection part P1. Thus, by providing the first window V1 and the second window V2, the assembly operation is facilitated.

[0059] In some embodiments, the first frame body 2211 and the third frame body 2213 can have the same structure, and the first connection part P1 on the first frame body 2211 and the third frame body 2213 can be a stud structure. However, it is not limited thereto.

[0060] In addition, in some exemplary embodiments, as Figures 16 to 18As shown, at least one of the second housing 2212 and the fourth housing 2214 further includes a fifth part S5. The first part S1, the fifth part S5, and the second part S2 are sequentially connected to form a semi - enclosed shape to enclose the cavity M. And in the direction parallel to the back plate 210, the fifth part S5 is located on the side of the cavity M close to the hollow area N.

[0061] With the above - mentioned solution, the second housing 2212 and the fourth housing 2214 can be profiles in a semi - enclosed shape. At this time, the second part S2 on the second housing 2212 and the fourth housing 2214 can be planar and have edges, and the edges of the second part S2 can be used to connect with the backpack back cover 222. It can be understood that the specific structure of the second housing 2212 and the fourth housing 2214 is not limited to this.

[0062] In addition, in some exemplary embodiments, heat dissipation holes V3 are provided on the fifth part S5 of at least one of the second housing 2212 and the fourth housing 2214. Exemplarily, please refer to Figure 17 As shown, when the second housing 2212 is the top housing, heat dissipation holes V3 are provided on the fifth part S5 of the second housing 2212. However, it is not limited thereto.

[0063] In addition, in some embodiments, the first connecting part P1 on the second housing 2212 and the fourth housing 2214 can be a stud structure or a screw hole structure, and the first connecting part P1 can be a screw hole structure or a stud structure. However, it is not limited thereto. For example, the first connecting part P1 and the second connecting part P2 can also be connected in any suitable way such as snap - fit connection.

[0064] In the above - mentioned embodiments, on the outer surfaces of the first housing 2211, the second housing 2212, the third housing 2213, and the fourth housing 2214, the first connectors for connecting the backpack frame 221 and the back plate 210 are not visible.

[0065] In addition, in some exemplary embodiments, the edge area of the backpack back cover 222 includes a first side edge 2221 corresponding to the first housing 2211 and a third side edge 2223 corresponding to the third housing 2213. Among them, a magnetic connection is provided between the first side edge 2221 and the first housing 2211, and a magnetic connection is provided between the third side edge 2223 and the third housing 2213. Connecting the first housing 2211, the third housing 2213 and the backpack back cover 222 by magnetic attraction has a simple structure and is convenient for assembly.

[0066] Exemplarily, such asFigure 5 and Figure 6 As shown in Figure 6 , a first magnetic attraction member Q1 is provided at the first side edge 2221 and the third side edge 2223. Mounting holes are provided in the second part S2 of the first frame body 2211 and the third frame body 2213, and a second magnetic attraction member Q2 is mounted in the mounting holes. The first magnetic attraction member Q1 and the second magnetic attraction member Q2 are magnetically connected to each other.

[0067] With the above solution, while realizing the magnetic connection between the first frame body 2211, the third frame body 2213 and the backpack rear cover 222, the backpack rear cover 222 also covers the first magnetic attraction member Q1 and the second magnetic attraction member Q2, so as to avoid seeing the first magnetic attraction member Q1 and the second magnetic attraction member Q2 on the appearance surface and ensure the integrity of the appearance.

[0068] Exemplarily, the first magnetic attraction member Q1 can be a magnetic attraction sheet made of a magnetic material. The second magnetic attraction member Q2 can include an adapter provided in the mounting hole. A screw is mounted on the adapter, and the screw is magnetically connected to the magnetic attraction sheet. This structure is simple and easy to assemble. However, the specific structures of the first magnetic attraction member Q1 and the second magnetic attraction member Q2 are not limited thereto.

[0069] In addition, in some exemplary embodiments, as Figure 11 shown, the edge area of the backpack rear cover 222 includes a second side edge 2222 corresponding to the second frame body 2212 and a fourth side edge 2224 corresponding to the fourth frame body 2214. A snap connection is provided between the second side edge 2222 and the second frame body 2212, and a second connecting member P4 is used to connect the fourth side edge 2224 and the fourth frame body 2214.

[0070] With the above solution, when assembling the backpack assembly 220, the second frame body 2212 and the backpack rear cover 222 can be snap-connected first, and then the fourth frame body 2214 and the backpack rear cover 222 can be fixedly connected through the second connecting member P4, which is convenient for disassembly and assembly and has a reliable structural connection.

[0071] Exemplarily, as Figure 7 and Figure 8 shown, a snap edge S21 is provided at one side edge of the second part S2 of the second frame body 2212 away from the fifth part S5. A snap member 2225 is mounted at the second side edge 2222 of the backpack rear cover 222. The snap member 2225 has a slot 2226 facing the snap edge S21, and the snap edge S21 is snapped into the slot 2226 to snap-connect the second side edge 2222 and the second frame body 2212.

[0072] Please refer to Figure 8 As shown, the engaging edge S21 may be a sunken edge formed by the sinking of the edge of the fifth part S5. The buckle 2225 is configured to have a clamping portion, and the clamping portion cooperates with the edge of the backpack rear cover 222 to form the card slot 2226. In this way, after the engaging edge S21 is inserted into the card slot 2226, it can also ensure that the surface of the fifth part S5 is substantially flush with the rear of the backpack, so as to further ensure the integrity of the appearance surface. And, by way of example, the buckle 2225 is fixed to the inner surface of the backpack rear cover 222 by means of screws or the like to ensure the integrity of the appearance surface of the backpack rear cover 222. However, the specific structure of the buckle 2225 is not limited thereto.

[0073] In some exemplary embodiments, such as Figure 7 and Figure 9 As shown, a third connecting portion P5 is provided on the fifth part S5 or the second part S2 in the fourth frame 2214, and a fourth connecting portion P6 is provided on one side surface of the backpack rear cover 222 facing the cavity M. The third connecting portion P5 and the fourth connecting portion P6 are connected by the second connecting member P4. By way of example, one of the third connecting portion P5 and the fourth connecting portion P6 may be a screw hole structure, and the other is a stud structure. The second connecting member P4 includes fasteners such as screws. However, it is not limited thereto.

[0074] In addition, in some exemplary embodiments, such as Figure 1 , Figure 11 and Figure 12 As shown, the support part 200 further includes: a base assembly 230, the base assembly 230 includes a base part 231, a bracket part 232 and a decorative plate 233. The bracket part 232 is inserted into the cavity M of at least one of the first frame 2211 and the third frame 2213, and a fifth connecting portion P7 is provided on the fourth part S4 of at least one of the first frame 2211 and the third frame 2213. A sixth connecting portion P8 is provided on the bracket portion 232, and a third connecting member P9 is inserted through the fifth connecting portion P7 and the sixth connecting portion P8. Wherein, the decorative plate 233 is attached to the side of the fourth part S4 away from the cavity M and covers the third connecting member P9.

[0075] With the above solution, both the fifth connecting portion P7 and the sixth connecting portion P8 can be screw hole structures, and the third connecting member P9 can be a screw structure. By inserting the bracket portion 232 into the cavity M of at least one of the first frame 2211 and the second frame 2212 and fixing it, the assembly connection between the base bracket and the backpack frame 221 is realized. And by providing the decorative plate 233, the integrity of the appearance surface can be ensured, and the connecting member between the base bracket and the backpack frame 221 can be hidden.

[0076] In addition, exemplarily, the cross-sectional shape of the bracket portion 232 is adapted to the cross-sectional shape and size of the cavity M of at least one of the first frame 2211 and the second frame 2212 to avoid shaking and ensure stable assembly.

[0077] Exemplarily, as Figure 12 shown, the backpack assembly further includes a limit stop member 250, and the limit stop member cooperates with the bracket portion 232 to limit the position of the bracket portion 232 inserted into the cavity M.

[0078] In addition, exemplarily, the decorative plate 233 can be attached to the surface of the fourth part S4 by any suitable method such as magnetic attraction or pasting to ensure no trace on the appearance surface.

[0079] The assembly process of the display device in an embodiment of the present disclosure can be as follows:

[0080] First, connect the first connecting portion P1 and the second connecting portion P2 through the first connecting member, and assemble each frame S in the backpack frame 221 to the back panel 210.

[0081] Then, assemble the backpack rear cover 222 and the backpack frame 221. The specific assembly steps are as follows: First, snap-connect the third frame 2213 and the backpack rear cover 222; then, fixedly connect the backpack rear cover 222 and the fourth frame 2214. At the same time, the backpack rear cover 222 and the first frame 2211 and the third frame 2213 are directly magnetically fixed, thus completing the assembly. The entire assembly process is simple and easy to operate.

[0082] The following points need to be explained:

[0083] (1) The drawings of the embodiments of the present disclosure only relate to the structures involved in the embodiments of the present disclosure, and other structures can refer to the general design.

[0084] (2) For clarity, in the drawings used to describe the embodiments of the present disclosure, the thickness of layers or regions is enlarged or reduced, that is, these drawings are not drawn to actual scale. It can be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" or "under" another element, the element can be "directly" on or under the other element or there can be intervening elements.

[0085] (3) Without conflict, the embodiments of the present disclosure and the features in the embodiments can be combined with each other to obtain new embodiments.

[0086] The above is only the specific implementation manner of the present disclosure, but the protection scope of the present disclosure is not limited thereto. The protection scope of the present disclosure shall be subject to the protection scope of the claims.

Claims

1. A display device, characterized in that: include: Display module; and, The supporting part includes a back plate and a backpack assembly, wherein the back plate is located on the backlight side of the display module, and the backpack assembly includes a backpack frame and a backpack back cover, wherein the backpack frame is detachably connected to the back plate, and the backpack back cover is detachably connected to the backpack frame, wherein the back plate and the backpack assembly are both made of metal materials.

2. The display device according to claim 1, characterized in that A hollow area is provided in the middle of the backpack frame, and the backpack frame includes four frames connected end to end in sequence to enclose the hollow area. The frame is a profile structure with a cavity, and the frame includes at least a first part and a second part. Along the direction perpendicular to the back plate, the first part and the second part are respectively located on opposite sides of the cavity, and the first part is located on a side of the second part close to the back plate, the first part is used to connect with the back plate, and the second part is used to support and connect the back cover of the backpack; wherein, a first connecting part is provided on the first part, and a second connecting part is provided on the back plate, and the first connecting part and the second connecting part are connected by a first connecting member.

3. The display device according to claim 2, characterized in that: The four frames include a first frame, a second frame, a third frame and a fourth frame connected end to end in sequence; at least one of the first frame and the third frame further includes a third part and a fourth part, and the first part, the third part, the second part and the fourth part are connected in sequence to enclose and form the cavity; In a direction parallel to the back plate, the third part is located on a side of the cavity close to the hollow area, the second part is provided with a first window communicating with the cavity at a position directly opposite to the first connecting portion, and the third part is provided with a second window communicating with the cavity at a position directly opposite to the first connecting portion.

4. The display device according to claim 3, characterized in that: The edge area of ​​the backpack back cover includes a first side edge corresponding to the first frame and a third side edge corresponding to the third frame, wherein the first side edge is magnetically connected to the first frame, and the third side edge is magnetically connected to the third frame.

5. The display device according to claim 4, characterized in that: A first magnetic component is provided at the first side edge and the third side edge, a mounting hole is provided on the first frame body and the second part in the third frame body, a second magnetic component is installed in the mounting hole, and the first magnetic component is magnetically connected to the second magnetic component.

6. The display device according to claim 2, characterized in that: The four frames include a first frame, a second frame, a third frame and a fourth frame connected end to end in sequence; at least one of the second frame and the fourth frame also includes a fifth part, the first part, the fifth part and the second part are connected in sequence to form the cavity in a semi-enclosed shape, and in a direction parallel to the back plate, the fifth part is located on a side of the cavity close to the hollow area.

7. The display device according to claim 6, characterized in that: The fifth portion of at least one of the second frame body and the fourth frame body is provided with a heat dissipation hole.

8. The display device according to claim 6, characterized in that: The edge area of ​​the backpack back cover includes a second side edge corresponding to the second frame and a fourth side edge corresponding to the fourth frame, wherein the second side edge is snap-connected to the second frame, and the fourth side edge is connected to the fourth frame via a second connecting member.

9. The display device according to claim 8, characterized in that: The second part of the second frame is provided with a locking edge at an edge of a side away from the fifth part, and the backpack back cover is installed with a fastener at the second side edge, and the fastener has a slot facing the locking edge, and the locking edge is locked into the slot to lock and connect the second side edge with the second frame.

10. The display device according to claim 8, characterized in that A third connection part is provided on the fifth part or the second part of the fourth frame, a fourth connection part is provided on the back cover of the backpack on a side facing the cavity, and the third connection part and the fourth connection part are connected by the second connection piece.

11. The display device according to claim 3, characterized in that: The support part further includes: a base assembly, the base assembly including a base portion, a bracket portion and a decorative plate, the bracket portion is inserted into the cavity of at least one of the first frame body and the third frame body, and a fifth connecting portion is provided on the fourth portion of at least one of the first frame body and the third frame body, a sixth connecting portion is provided on the bracket portion, and a third connecting member is installed in the fifth connecting portion and the sixth connecting portion; Wherein, the decorative plate is attached to a side of the fourth part away from the cavity and covers the third connecting member.

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