Display device

Abstract

The utility model provides a display device which comprises a back plate and a rear cover. The rear cover comprises a first rear shell and a second rear shell which are adjacently arranged; the second rear shell covers and is fixed on the back surface of the back plate; one end, facing the first rear shell, of the second rear shell is formed on a convex lap joint part; and a clamping hole is formed in the lap joint part. A protruding clamping protrusion is formed on the face, facing the backboard, of the first rear shell. The clamping protrusion is arranged on the edge of the side, facing the second rear shell, of the first rear shell. The first rear shell can move close to and far away from the back plate, so that the edge, facing the second rear shell, of the first rear shell is in forward lap joint with the face, back to the back plate, of the lap joint part, the clamping protrusions are detachably clamped in the clamping holes, and therefore the first rear shell is detachably clamped on the second rear shell; therefore, connection and disassembly between the first rear shell and the second rear shell are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of household electrical appliances, in particular to a display device. Background Art

[0002] Display devices, such as televisions, have become essential appliances in everyday households. With the development of society, labor costs have increased year by year, and the proportion of product labor costs in the entire production chain has become increasingly important. How to reduce labor costs, improve production efficiency, and ensure production consistency has been valued by more and more companies; especially in the home appliance industry, where competition is more intense, how to better ensure quality and quantity and reduce costs has become an important direction for the survival and development of home appliance companies.

[0003] The display device mainly includes a display panel, a back plate and a rear shell, etc. Among them, the display panel is arranged on the front side wall of the back plate, serving as the display screen of the display device; the rear shell is arranged on the rear side wall of the back plate, serving as part or all of the appearance surface of the back side of the display device.

[0004] At present, TV sets mainly use back shells to protect the electronic components inside the whole machine, so the size of the back shell is relatively large. In order to reduce the mold cost and the packaging and transportation cost of the back shell, the back shell is designed to be a split structure. The connection between the split back shells is mainly through screws, which is not only cumbersome to install, but also time-consuming to disassemble. In addition, when using self-tapping screws for connection, it is easy to cause problems such as thread slippage, and the exposed screws also greatly affect the appearance of the TV. Utility Model Content

[0005] The utility model aims to provide a display device, which is convenient for connecting and disassembling rear covers.

[0006] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0007] According to one aspect of the utility model, the utility model provides a display device, including a back plate and a back cover; a display panel for displaying image information is arranged on the front side of the back plate; a driving component is fixed on the back side of the back plate; the back cover is used to cover the back side of the back plate and cover the driving component; the back cover includes a first rear shell and a second rear shell arranged adjacent to each other; the second rear shell cover is combined and fixed to the back side of the back plate, and the second rear shell is formed on a protruding overlapping portion at one end facing the first rear shell; a clamping hole is provided on the overlapping portion; a protruding clamping protrusion is formed on a side of the first rear shell facing the back plate; the clamping protrusion is arranged on a side edge of the first rear shell facing the second rear shell; the first rear shell can move close to and away from the back plate, so that the edge of the first rear shell facing the second rear shell is overlapped forward on the side of the overlapping portion facing away from the back plate, and the clamping protrusion is detachably engaged in the clamping hole.

[0008] In some embodiments of the present application, the latching protrusion is an insertion tongue protruding from the first rear shell, and a protruding guide portion is formed on a side surface of a free section of the insertion tongue, and the guide portion overlaps the overlapping portion on a side facing the first rear shell; a first guide surface is formed on a side of the guide portion facing away from the first rear shell, and the first guide surface is inclined toward the first rear shell in a direction away from the insertion tongue.

[0009] In some embodiments of the present application, a second guide surface is formed on a surface of the guide portion facing the first rear shell, and the second guide surface extends away from the insertion tongue and away from the first rear shell.

[0010] In some embodiments of the present application, at least a portion of the first rear shell can be flipped relative to the back plate to drive the insertion tongue to move; there is a gap between two opposite side walls of the insertion tongue in the flipping plane of the first rear shell and the corresponding side walls of the card hole.

[0011] In some embodiments of the present application, the latching protrusion is a latching column protruding from the first rear shell, and a protruding rib is formed on the peripheral side of the latching column; the rib is fitted to the peripheral side wall corresponding to the latching hole.

[0012] In some embodiments of the present application, a guide surface is formed at one end of the rib facing away from the first rear shell, and the guide surface is inclined in a direction facing away from the clamping column and toward the first rear shell.

[0013] In some embodiments of the present application, a protruding flange is formed on the edge of the clamping hole; the flange extends back to the first rear shell.

[0014] In some embodiments of the present application, the second rear shell is arranged on the left and right sides of the first rear shell; the first rear shell includes an upper part and a lower part; the latch is formed at the lower part of the first rear shell; a waist is formed between the upper part and the lower part of the first rear shell, and the lower part of the first rear shell can be flipped from the waist relative to the upper part of the first rear shell, so that the first rear shell can be flipped at a preset angle relative to the second rear shell.

[0015] In some embodiments of the present application, the number of the second rear shells is two, and the two second rear shells are respectively arranged on the left and right sides of the first rear shell.

[0016] In some embodiments of the present application, the locking holes are arranged at intervals of multiple, and the locking protrusions are arranged in multiples and correspond to the locking holes.

[0017] It can be seen from the above technical solution that the utility model has at least the following advantages and positive effects:

[0018] In the utility model, the second rear shell is fixedly connected to the back of the back plate, and the end of the second rear shell facing the first rear shell is formed in a protruding overlap portion; a latch hole is provided on the overlap portion. A protruding latch is formed on the side of the first rear shell facing the back plate; the latch is provided on the side edge of the first rear shell facing the second rear shell. The first rear shell can move towards and away from the back plate, so that the edge of the first rear shell facing the second rear shell is forwardly overlapped on the side of the overlap portion facing away from the back plate, and the latch is detachably engaged in the latch hole, so that the first rear shell can be detachably engaged on the second rear shell, thereby facilitating the connection and disassembly between the first rear shell and the second rear shell.

[0019] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0020] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings herein are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present disclosure, and together with the specification are used to explain the principles of the present disclosure. Obviously, the accompanying drawings described below are only some embodiments of the present disclosure, and for ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without creative work.

[0022] Figure 1 It is a structural schematic diagram of the display device of the utility model.

[0023] Figure 2 It is a schematic diagram of the exploded structure of the rear cover of the utility model.

[0024] Figure 3 It is a structural schematic diagram of the rear cover of the utility model.

[0025] Figure 4 It is a schematic diagram of the mechanism of the second rear shell of the utility model from one viewing angle.

[0026] Figure 5 It is a schematic diagram of the mechanism of the second rear shell of the utility model from another perspective.

[0027] Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0028] Figure 7 yes Figure 3 Enlarged view of point B in the middle.

[0029] Figure 8 It is a structural schematic diagram of the first rear shell of the utility model from one viewing angle.

[0030] Fig. 9 It is a structural schematic diagram of the first rear shell of the utility model from another perspective.

[0031] Fig.10 yes Fig. 9 Enlarged view of point C in the middle.

[0032] Fig.11 It is a structural schematic diagram of the plug tongue of the utility model.

[0033] The reference numerals are as follows: 100, back plate; 200, back cover; 210, first rear shell; 211, plug tongue; 212, guide portion; 2121, first guide surface; 2122, second guide surface; 213, clamping column; 214, rib; 215, upper portion; 216, lower portion; 217, waist portion; 220, second rear shell; 221, overlapping portion; 222, first clamping hole; 223, second clamping hole; 224, flange. DETAILED DESCRIPTION

[0034] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be more comprehensive and complete and will fully convey the concept of the example embodiments to those skilled in the art.

[0035] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0036] The present application is further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0037] At present, television sets mainly use the back shell to protect the electronic components inside the whole machine, so the size of the back shell is relatively large. In order to reduce the mold cost and the packaging and transportation cost of the back shell, the back shell is designed to be a split structure. The connection between the split back shells is mainly through screw connection, which is not only cumbersome during installation, but also time-consuming during disassembly. And when using self-tapping screws for connection, it is easy to cause problems such as thread slippage, and the exposed screws also greatly affect the appearance of the TV. The present application provides a display device to solve the above technical problems.

[0038] For ease of description, unless otherwise specified, the directions of up, down, left, right, front, and back in this article are all based on the state of the display device when it is in use. The screen of the display device (i.e., the display surface of the display panel) is the front, and the opposite direction is the back. The display device is not limited to electronic products such as televisions, computer monitors, and digital photo frames. The following is a specific description using the structure of an LCD TV as an example.

[0039] Figure 1 It is a structural schematic diagram of the display device of the utility model.

[0040] See also Figure 1 The display device includes a back plate 100, a display panel (not shown) arranged on the front side of the back plate 100, and a back cover 200 covering the back side of the back plate 100. The back plate 100 is the main support member of the display device. The front side of the back plate 100 is formed with a mounting cavity for mounting structures such as a light source and an optical film group. The light emitted by the light source passes through the optical film group and displays corresponding image information on the display panel. The back plate 100 and the display panel constitute a display body. The specific structure of the back plate 100 refers to the structure of the back plate 100 in the related art, and will not be repeated here.

[0041] The peripheral edge of the back plate 100 is formed with a frame protruding forward; the frame is arranged around the periphery and extends around the edge of the back plate 100. The frame extends forward beyond the front side of the back plate 100, and the frame and the back plate 100 enclose a mounting cavity with a front opening for mounting a backlight source and an optical film assembly. The display panel is fixed at the front end of the frame.

[0042] The frame may be a middle frame that fixes the peripheral edge of the back plate 100. The middle frame covers the edge of the back plate 100, and the middle frame surrounds the peripheral edge of the back plate 100. In some embodiments, the frame and the back plate 100 are formed integrally, and the edge of the back plate 100 extends forward to form a frame, and the frame is arranged around the circumference.

[0043] The display panel is arranged on the front side of the back plate 100 to display image information for users to watch. The edge of the display panel is connected to the frame to fix the display panel. There is a gap between the front side of the back plate 100 and the back side of the display panel to form a mounting cavity, and an optical film group and a light source are arranged in the gap. The light emitted by the light source passes through the optical film group and displays the image information on the display panel.

[0044] The back cover 200 is arranged on the back side of the back plate 100, and a chamber is formed between the front side of the back cover 200 and the back side of the back plate 100. A driving component is arranged on the back side of the back plate 100, and the driving component is arranged in the chamber. The driving component includes a driving board, a power board, a speaker, a socket strip and other main boards. The driving component is fixed on the back side of the back plate 100 and is located within the coverage range of the back cover 200 so as to protect the electronic components with the back cover 200. The driving board is mainly used to calculate the control system and output relevant operation instructions accordingly. The driving board is located between the back side of the back plate 100 and the back cover 200, and is fixed on the back side of the back plate 100.

[0045] The speaker is disposed on the back of the back panel 100, and is mainly used to produce corresponding sounds in coordination with the interface displayed by the display panel. The socket strip is provided with multiple different types of interfaces for connecting external devices, to receive signals from external devices or to output signals to external devices. In some embodiments, the socket strip is integrated on the driver board.

[0046] The back cover 200 is installed on the back of the back plate 100, covering and shielding the driving components to protect the driving components on the back of the back plate 100. The back cover 200 is detachably covered on the back of the back plate 100, so that the electronic components on the back of the back plate 100 can be repaired and tested after the back cover 200 is removed.

[0047] Figure 2 It is a schematic diagram of the exploded structure of the rear cover of the utility model. Figure 3 It is a structural schematic diagram of the rear cover of the utility model.

[0048] See also Figure 2 and Figure 3 The back cover 200 is used to cover the back of the back plate 100, and the back cover 200 covers the driving components on the back of the back plate 100. In this embodiment, the back cover 200 covers a part of the back plate 100, and together with the back of the back plate 100, constitutes the appearance surface of the back of the display device.

[0049] The back cover 200 includes a first back shell 210 and a second back shell 220 arranged adjacent to each other, and the first back shell 210 and the second back shell 220 are spliced ​​at opposite edges. The back cover 200 is a split structure, and the single first back shell 210 and the second back shell 220 have a smaller area than the back cover 200 as a whole, which is convenient for production and installation.

[0050] In this embodiment, the first rear shell 210 and the second rear shell 220 are adjacently arranged on the left and right sides, the second rear shell 220 is provided in two pieces, and the first rear shell 210 is provided in one piece. The two second rear shells 220 are respectively provided on the left and right sides of the first rear shell 210, and the two second rear shells 220 are respectively overlapped on the first rear shell 210 relative to one side of the first rear shell 210. In one embodiment, the first rear shell 210 and the second rear shell 220 are respectively provided in one piece.

[0051] In some embodiments, the first rear shell 210 and the second rear shell 220 are disposed adjacent to each other in the up-and-down direction, and the first rear shell 210 and the second rear shell 220 are respectively disposed in plural numbers.

[0052] Figure 4 It is a schematic diagram of the mechanism of the second rear shell of the utility model from one viewing angle. Figure 5 It is a schematic diagram of the mechanism of the second rear shell of the utility model from another perspective. Figure 6 yes Figure 5 Enlarged view of point A in the middle.

[0053] See also Figures 1 to 6 , the second rear shell 220 covers and is fixed on the back side of the back plate 100. The second rear shell 220 is fixed to the back side of the back plate 100 by means of snap-fit ​​or fasteners. The end of the second rear shell 220 facing the first rear shell 210 is formed at a protruding overlap portion 221, and the overlap portion 221 is used to overlap with the first rear shell 210, so that the first rear shell 210 and the second rear shell 220 are spliced ​​into one. The rear side of the overlap portion 221 is in front of the back side of the first rear shell 210. After the first rear shell 210 and the second rear shell 220 are spliced, the first rear shell 210 faces the edge of the second rear shell 220 and the side facing the back plate 100 and overlaps on the overlap portion 221, and the back sides of the first rear shell 210 and the second rear shell 220 are smoothly transitioned.

[0054] The overlap portion 221 is provided with a locking hole for locking with a corresponding structure on the first rear shell 210, so that the first rear shell 210 is connected to the second rear shell 220. The locking hole is provided as one or more, and when the locking hole is provided as a plurality, the plurality of locking holes are provided at intervals.

[0055] In this embodiment, there are two clamping holes, namely, a first clamping hole 222 and a second clamping hole 223. The first clamping hole 222 is a long hole, and the length direction of the first clamping hole 222 is arranged vertically. The second clamping hole 223 is a round hole, and the second clamping hole 223 is located below the first clamping hole 222. In some embodiments, both clamping holes are long holes.

[0056] A protruding flange 224 is formed at the edge of the card hole; the flange 224 extends away from the first rear shell 210 to enhance the structural strength of the second rear shell 220 at the card hole, effectively avoid breakage or damage at the card hole, and ensure the reliability of the first rear shell 210 being engaged at the card hole.

[0057] Figure 7 yes Figure 3 Enlarged view of point B in the middle. Figure 8 It is a structural schematic diagram of the first rear shell of the utility model from one viewing angle. Fig. 9 It is a structural schematic diagram of the first rear shell of the utility model from another perspective. Fig.10 yes Fig. 9 Enlarged view of point C in the middle. Fig.11 It is a structural schematic diagram of the plug tongue of the utility model.

[0058] See also Figures 1 to 11 , the edge of the first rear shell 210 overlaps the overlapping portion 221 of the second rear shell 220. A protruding latch is formed on the side of the first rear shell 210 facing the back plate 100; the latch is set on the side edge of the first rear shell 210 facing the second rear shell 220. The first rear shell 210 can move closer to and away from the back plate 100, so that the edge of the first rear shell 210 facing the second rear shell 220 is forwardly overlapped on the side of the overlapping portion 221 facing away from the back plate 100, and the latch is detachably engaged in the latch hole, so that the first rear shell 210 and the second rear shell 220 are detachably connected, which facilitates the disassembly between the first rear shell 210 and the second rear shell 220. At the same time, the use of screws is reduced to ensure the aesthetics of the back of the back cover 200.

[0059] When there are one or more clamping protrusions and there are multiple clamping holes, the clamping protrusions are multiple and correspond to the clamping holes. The number and position of the clamping protrusions correspond to the number and position of the clamping holes. In this embodiment, there are two clamping holes, and the clamping protrusions are correspondingly set to two.

[0060] One of the protrusions is a tongue 211 protruding from the first rear shell 210, and a protruding guide portion 212 is formed on one side of the free section of the tongue 211. The guide portion 212 overlaps the overlap portion 221 toward one side of the first rear shell 210, and limits the tongue 211 in the corresponding hole. Specifically, the tongue 211 is arranged corresponding to the first hole 222, and the tongue 211 is inserted in the first hole 222.

[0061] A first guide surface 2121 is formed on the side of the guide portion 212 facing away from the first rear shell 210, and the first guide surface 2121 is inclined toward the first rear shell 210 in a direction away from the plug tongue 211. When the first rear shell 210 moves toward the second rear shell 220, the plug tongue 211 extends into and engages with the corresponding first clamping hole 222. When the plug tongue 211 extends into the corresponding first clamping hole 222, the first guide surface 2121 on the guide portion 212 is provided to facilitate the plug tongue 211 to extend into the clamping hole, and after extending into the clamping hole, the guide portion 212 overlaps the overlap portion 221, so that the plug tongue 211 is limited in the first clamping hole 222.

[0062] A second guide surface 2122 is formed on one side of the guide portion 212 facing the first rear shell 210, and the second guide surface 2122 extends away from the first rear shell 210 in a direction away from the plug tongue 211. When the first rear shell 210 moves away from the back plate 100, so that the first rear shell 210 moves away from the second rear shell 220, and the plug tongue 211 is released from the corresponding first locking hole 222, the second guide surface 2122 facilitates the plug tongue 211 to be pulled out of the first long hole, thereby facilitating the separation of the first rear shell 210 and the second rear shell 220.

[0063] At least part of the first rear shell 210 can be flipped relative to the back plate 100 to drive the insertion tongue 211 to move; there is a gap between the two opposite side walls of the insertion tongue 211 in the flipping plane of the first rear shell 210 and the side walls of the corresponding locking hole, so that when the first rear shell 210 is flipped relative to the back plate 100, the insertion tongue 211 can be extended into or pulled out of the corresponding first locking hole 222, and the movement of the insertion tongue 211 in the first long hole will not be interfered by the first long hole.

[0064] One of the protrusions is a post 213 protruding from the first rear shell 210, and the post 213 is engaged in the corresponding second hole 223. In this embodiment, two protrusions are provided on the edge of the first rear shell 210 facing the second rear shell 220, and the two protrusions are respectively a tongue 211 and a post 213. In some embodiments, the plurality of protrusions are tongues 211.

[0065] In this embodiment, a protruding rib 214 is formed on the peripheral side of the clamping column 213, and the rib 214 is attached to the peripheral side wall of the corresponding clamping hole. The rib 214 is circumferentially arranged on the outer peripheral side of the clamping column 213 around the axis of the clamping column 213, and the rib 214 is attached to the peripheral side wall of the corresponding second clamping hole 223. The clamping column 213 is engaged in the second clamping hole 223, which enhances the structural strength and stability of the clamping of the first rear shell 210 and the second rear shell 220. The clamping column 213 cooperates in the second clamping hole 223 to limit the movement of the second rear shell 220 relative to the first rear shell 210 in the up, down, left and right directions.

[0066] A guide surface is formed at one end of the rib 214 facing away from the first rear shell 210 . The guide surface is inclined in a direction away from the clamping column 213 and toward the first rear shell 210 , so as to facilitate the clamping column 213 to extend into the corresponding second clamping hole 223 .

[0067] In this embodiment, the second rear shell 220 is disposed on the left and right sides of the first rear shell 210; the first rear shell 210 includes an upper portion 215 and a lower portion 216; a cam is formed on the lower portion 216 of the first rear shell 210; a waist portion 217 is formed between the upper portion 215 and the lower portion 216 of the first rear shell 210, and the lower portion 216 of the first rear shell 210 can be flipped relative to the upper portion 215 of the first rear shell 210 from the waist portion 217, so that the first rear shell 210 can be flipped relative to the second rear shell 220 at a preset angle. The flipping of the first rear shell 210 relative to the second rear shell 220 facilitates the separation of the first rear shell 210 and the second rear shell 220.

[0068] In some embodiments, the first rear shell 210 can be flipped as a whole relative to the second rear shell 220 to facilitate the engagement and separation of the first rear shell 210 and the second rear shell 220 .

[0069] In some other embodiments, the first rear shell 210 can be translated as a whole relative to the second rear shell 220 in a direction away from the back plate 100 , so that the first rear shell 210 and the second rear shell 220 can be engaged and separated.

[0070] In the present invention, the second rear shell 220 covers and is fixed on the back of the back plate 100, and the end of the second rear shell 220 facing the first rear shell 210 is formed on a protruding overlap portion 221; a locking hole is provided on the overlap portion 221. A protruding locking protrusion is formed on the side of the first rear shell 210 facing the back plate 100; the locking protrusion is provided on the side edge of the first rear shell 210 facing the second rear shell 220. The first rear shell 210 can move closer to and away from the back plate 100, so that the edge of the first rear shell 210 facing the second rear shell 220 is overlapped forward on the side of the overlap portion 221 facing away from the back plate 100, and the locking protrusion is detachably engaged in the locking hole, so that the first rear shell 210 can be detachably engaged on the second rear shell 220, thereby facilitating the connection and disassembly between the first rear shell 210 and the second rear shell 220.

[0071] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0072] In this application, unless otherwise clearly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral body; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In the description of this specification, the description of the reference terms "some embodiments", "exemplarily", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of this application. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner. In addition, in the absence of contradiction, technicians in this field can combine and combine different embodiments or examples described in this specification and the features of different embodiments or examples.

[0073] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent of this application.

Claims

1. A display device, characterized in that: include: A back plate, a display panel for displaying image information is arranged on the front side of the back plate; A driving component is fixed on the back side of the back plate; A rear cover is used to cover the back of the back plate and cover the driving component; the rear cover includes a first rear shell and a second rear shell arranged adjacent to each other; the second rear shell is combined and fixed to the back of the back plate, and the end of the second rear shell facing the first rear shell is formed on a protruding overlap portion; a clamping hole is provided on the overlap portion; a protruding clamping protrusion is formed on a side of the first rear shell facing the back plate; the clamping protrusion is provided on a side edge of the first rear shell facing the second rear shell; The first rear shell can move toward and away from the back plate, so that the edge of the first rear shell facing the second rear shell overlaps forwardly on a side of the overlap portion facing away from the back plate, and the latching protrusion is detachably engaged in the latching hole.

2. The display device according to claim 1, characterized in that The clamping protrusion is an inserting tongue protruding from the first rear shell, and a protruding guiding portion is formed on a side surface of a free section of the inserting tongue, and the guiding portion overlaps the overlapping portion on a side facing the first rear shell; a first guiding surface is formed on a side of the guiding portion facing away from the first rear shell, and the first guiding surface is inclined toward the first rear shell in a direction away from the inserting tongue.

3. The display device according to claim 2, characterized in that: A second guide surface is formed on a surface of the guide portion facing the first rear shell, and the second guide surface extends away from the insertion tongue and away from the first rear shell.

4. The display device according to claim 2, characterized in that: At least part of the first rear shell can be flipped relative to the back plate to drive the insertion tongue to move; there is a gap between two opposite side walls of the insertion tongue in the flipping plane of the first rear shell and the corresponding side walls of the clamping hole.

5. The display device according to claim 1, characterized in that The clamping protrusion is a clamping column protruding from the first rear shell, and a protruding rib is formed on the peripheral side of the clamping column; the rib is fitted to the peripheral side wall corresponding to the clamping hole.

6. The display device according to claim 5, characterized in that: A guide surface is formed at one end of the rib facing away from the first rear shell, and the guide surface is inclined in a direction facing away from the clamping column and toward the first rear shell.

7. The display device according to claim 1, characterized in that: A protruding flange is formed at the edge of the clamping hole; the flange extends away from the first rear shell.

8. The display device according to claim 1, characterized in that: The second rear shell is arranged on the left and right sides of the first rear shell; the first rear shell includes an upper part and a lower part; the latching protrusion is formed at the lower part of the first rear shell; a waist is formed between the upper part and the lower part of the first rear shell, and the lower part of the first rear shell can be flipped from the waist relative to the upper part of the first rear shell, so that the first rear shell can be flipped at a preset angle relative to the second rear shell.

9. The display device according to claim 8, characterized in that: The number of the second rear shells is two, and the two second rear shells are respectively arranged on the left and right sides of the first rear shell.

10. The display device according to any one of claims 1 to 9, characterized in that: The clamping holes are arranged at intervals of a plurality, and the clamping protrusions are arranged in a plurality and correspond to the clamping holes.

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