Display device

Abstract

The utility model provides a display device. The display device comprises a back plate, a first circuit board, a rear shell and a flame-retardant plate. The flame-retardant plate is arranged on the side, facing the back plate, of the rear shell, the projection of the flame-retardant plate on the back plate covers the first circuit board, and the flame-retardant plate is made of a material with the flame-retardant grade higher than V1 grade, so that heat emitted by the first circuit board can be effectively prevented from being transmitted to the rear shell, and the rear shell can be made of a material with the flame-retardant grade not higher than V1; therefore, the cost of the rear shell is effectively reduced, and the manufacturing cost of the display device is reduced.

Description

TECHNICAL FIELD

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

[0002] Display devices are applied in users' life, can show different interfaces for users to watch, wherein, display device mainly is TV, display and so on. The producers of various display devices compete particularly outstandingly on the TV market, even form the situation of price war, wherein, the producers of various display devices reduce the overall cost of display device by reducing the wall thickness of display device.

[0003] The back plate of the display device is fixed with circuit board and power board and the like structure, the back cover is covered on the back of the back plate and covers the circuit board and the power board. The circuit board and the power board and the like structure will generate heat when working. The generation of heat can cause the back cover to have the risk of fire.

[0004] In the related art, in order to meet the safety requirements, the shell needs to take measures to deal with the fire, and the commonly used scheme is that the back cover as a whole adopts flame-retardant V0 material to meet the safety requirements. However, the cost of the corresponding grade of flame-retardant material is relatively high, resulting in high cost of the display device. UTILITY MODEL CONTENT

[0005] The utility model aims at providing a display device, which sets flame-retardant material on the back cover, and the back cover can be made of material with low flame-retardant grade, thereby reducing the cost of the display device.

[0006] To solve the above technical problems, the utility model adopts the following technical scheme:

[0007] According to one aspect of the utility model, the utility model provides a display device, which comprises a back plate, a first circuit board, a back cover and a flame-retardant plate. The first circuit board is arranged on the back of the back plate, and the heat generated by the first circuit board in working state is higher than a preset threshold. The back cover is covered on the back of the back plate. The flame-retardant plate is fixed on the side of the back cover facing the back plate, and the projection of the flame-retardant plate on the back plate covers the first circuit board. The flame-retardant plate is made of material with flame-retardant grade higher than V1 grade.

[0008] The above technical features have at least the following technical effects and advantages:

[0009] The flame-retardant plate is arranged on the side of the back cover facing the back plate, the projection of the flame-retardant plate on the back plate covers the first circuit board, and the flame-retardant plate is made of material with flame-retardant grade higher than V1 grade, so that the heat generated by the first circuit board can be effectively blocked from being transmitted to the back cover, and the back cover can be made of material with flame-retardant grade not higher than V1, thereby effectively reducing the cost of the back cover and the manufacturing cost of the display device.

[0010] In some embodiments of the present application, the rear shell is provided with a first limiting structure on one side of the back plate, which is a buckle protruding from the front side of the rear shell; the fireproof plate is provided with a second limiting structure, which is a clamping hole formed on the fireproof plate; the buckle is detachably clamped in the clamping hole.

[0011] The above technical features have at least the following technical effects and advantages:

[0012] The clamping hole is formed on the fireproof plate, and the buckle protruding from the front side of the rear shell is arranged on the rear shell. The buckle is detachably clamped in the clamping hole, so as to facilitate the quick installation of the fireproof plate on the front side of the rear shell.

[0013] In some embodiments of the present application, the clamping hole penetrates the fireproof plate in the front-rear direction; the buckle is arranged in the clamping hole and overlaps the front side of the fireproof plate; the projections of the clamping hole and the buckle on the back plate in the front direction do not cover the first circuit board.

[0014] The above technical features have at least the following technical effects and advantages:

[0015] The buckle is arranged in the clamping hole and overlaps the front side of the fireproof plate, limiting the forward movement of the fireproof plate, and limiting the fireproof plate between the front side of the fireproof plate and the buckle. The projections of the clamping hole and the buckle on the back plate in the front direction do not cover the first circuit board, so as to effectively avoid the heat on the first circuit board being transferred to the buckle, effectively reduce the risk of the buckle catching fire, and avoid the flame being transferred from the buckle to the rear shell.

[0016] In some embodiments of the present application, the buckle includes a stop segment and a clamping tongue segment; the stop segment protrudes forward from the rear shell; the stop segment is arranged in the clamping hole; the clamping tongue segment is bent from the front end of the stop segment and extends upward, the rear side of the clamping tongue segment abuts against the front side of the fireproof plate, and the rear side of the fireproof plate is attached to the front side of the rear shell.

[0017] The above technical features have at least the following technical effects and advantages:

[0018] The rear side of the clamping tongue segment abuts against the front side of the fireproof plate, and the rear side of the fireproof plate is attached to the front side of the rear shell, so as to limit the fireproof plate in the front-rear direction and clamp the fireproof plate on the front side of the rear shell.

[0019] In some embodiments of the present application, a protruding guide rib is formed on the front side of the fireproof plate above the clamping hole, and the guide rib extends in the up-down direction; the front end face of the guide rib in the direction of the back plate increases in height in the direction away from the clamping hole, forming a guide surface; and the rear side of the clamping tongue segment in the direction of the rear shell is attached to the front end face of the guide rib.

[0020] The above technical features have at least the following technical effects and advantages:

[0021] The height of the front end surface of the guide rib towards the back plate increases in the direction away from the clamping hole, and a guide surface is formed. Through the guiding effect of the guide surface, the clamping tongue section can move along the guide surface of the guide rib, thereby facilitating the fitting of the rear side surface of the clamping section to the front side surface of the guide rib, and maintaining the clamping between the clamping tongue section of the fireproof plate and the front side surface of the rear shell.

[0022] In some embodiments of the present application, a protruding stop rib is formed on the rear side surface of the clamping tongue section; the distance between the stop rib and the stop section is greater than the extension length of the guide rib, so that the stop rib stops at the upper end of the guide rib.

[0023] The above technical features have at least the following technical effects and advantages:

[0024] The stop rib stops at the upper end of the guide rib, supports the guide rib, and limits the downward movement of the stop rib. The stop rib is arranged on the buckle on the rear shell, and the guide rib is arranged on the fireproof plate, thereby limiting the upward movement of the fireproof plate relative to the rear shell, and avoiding the upward disengagement of the fireproof plate from the buckle.

[0025] In some embodiments of the present application, there is a gap between the clamping tongue section and the front side surface of the rear shell; a reinforcing rib is arranged between the rear shell and the clamping tongue section; an avoiding hole is formed on the fireproof plate above the clamping hole; the lower end of the avoiding hole is in communication with the clamping hole, and the guide rib is arranged on both sides of the avoiding hole; and the reinforcing rib is located in the avoiding hole.

[0026] The above technical features have at least the following technical effects and advantages:

[0027] The reinforcing rib arranged between the rear shell and the clamping tongue section enhances the structural strength of the buckle. The avoiding hole is formed on the fireproof plate, and the reinforcing rib is located in the avoiding hole, so that the arrangement of the reinforcing rib does not affect the clamping of the buckle on the fireproof plate.

[0028] In some embodiments of the present application, a protruding limiting rib is formed on the upper surface of the stop section; and the limiting rib stops on the upper side wall of the clamping hole.

[0029] The above technical features have at least the following technical effects and advantages:

[0030] The arrangement of the limiting rib enhances the structural strength of the stop section, and the stop rib can also support the fireproof plate upwardly.

[0031] In some embodiments of the present application, the fireproof grade of the rear shell is lower than the fireproof grade of the fireproof plate.

[0032] The above technical features have at least the following technical effects and advantages:

[0033] The fire-retardant grade of the rear shell is lower than that of the fire-retardant plate, and the rear shell does not need to be made of a material with a fire-retardant grade higher than V1, thereby reducing the cost of the rear shell.

[0034] In some embodiments of the present application, the display device further comprises a second circuit board disposed on the back plate; the projection of the fire-retardant plate on the back plate does not cover the second circuit board.

[0035] The above technical features have at least the following technical effects and advantages:

[0036] The projection of the fire-retardant plate on the back plate does not cover the second circuit board, and the projection of the fire-retardant plate on the back plate only covers the first circuit board, so that the fire-retardant plate has a smaller area, the fire-retardant plate has a smaller size, thereby reducing the cost of the fire-retardant plate.

[0037] In some embodiments of the present application, the second limiting structure is provided in plurality, and the plurality of second limiting structures are disposed close to the edge of the fire-retardant plate.

[0038] The above technical features have at least the following technical effects and advantages:

[0039] The plurality of second limiting structures are disposed close to the edge of the fire-retardant plate, the first limiting structure on the rear shell corresponds to the second limiting structure, and the first limiting structure on the rear shell is disposed close to the edge of the fire-retardant plate, so as to reduce the probability of heat transfer of the first circuit board to the first limiting structure, effectively avoiding the first limiting structure from catching fire.

[0040] In some embodiments of the present application, the rear shell is further provided with a fixing hole; the fire-retardant plate is provided with a through hole penetrating front and back, and the fastener can pass through the through hole and the fixing hole and be screwed into the fixing hole.

[0041] The above technical features have at least the following technical effects and advantages:

[0042] The fastener can pass through the through hole and the fixing hole and be screwed into the fixing hole, thereby fixing the fire-retardant plate on the front side of the rear shell.

[0043] Other characteristics and advantages of the present application will become apparent from the following detailed description, or will be learned by practice of the present application.

[0044] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0045] The accompanying drawings, which are incorporated into and form a part of the specification, illustrate preferred embodiments of the present disclosure and, together with the description, serve to explain the principles of the present disclosure. It is pointed out that the drawings described below are only some embodiments of the present disclosure, and other drawings can also be obtained according to these drawings without creative labor for those skilled in the art.

[0046] Figure 1 Is a part structure schematic diagram of the display device, wherein the rear shell is not shown.

[0047] Figure 2 Is a connection schematic diagram of the fire-retardant plate on the rear shell.

[0048] Figure 3 Is a schematic diagram of the back of the back plate.

[0049] Figure 4 Is a structure schematic diagram of the rear shell from one perspective.

[0050] Figure 5 Is a structure schematic diagram of the rear shell from another perspective.

[0051] Figure 6 Is Figure 5 An enlarged view of A in FIG.

[0052] Figure 7 Is a structure schematic diagram of the buckle.

[0053] Figure 8 Is Figure 2 An enlarged view of B in FIG.

[0054] Figure 9 Is a structure schematic diagram of the fire-retardant plate.

[0055] Figure 10 Is Figure 9 An enlarged view of C in FIG.

[0056] The reference signs are explained as follows: 100, back plate; 110, first area; 120, second area; 300, rear shell; 310, buckle; 311, stop segment; 312, clamping tongue segment; 313, limiting rib; 314, reinforcing rib; 315, stop rib; 320, fixing hole; 400, fire-retardant plate; 410, clamping hole; 420, guide rib; 421, guide surface; 430, avoiding hole; 440, perforation. DETAILED DESCRIPTION

[0057] Example implementations will now be described more fully with reference to the accompanying drawings. Example implementations can be implemented in any

[0058] Moreover, described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a thorough understanding of embodiments of the application. One skilled in the relevant art will recognize, however, that the

[0059] The application will be further described with reference to the drawings and specific examples. It is to be noted that the technical features involved in the various embodiments of the application described below can be combined with each other as long as there is no conflict. The embodiments described below with reference to the drawings are exemplary and are intended to explain the application, but should not be construed as limiting the application.

[0060] In the related art, in order to meet the safety requirements, the shell needs to take measures to deal with fire, and the commonly used solution is to use flame-retardant V0 material for the whole rear shell to meet the safety requirements. However, the cost of the corresponding grade of flame-retardant material is high, resulting in high cost of the display device. The application provides a display device to solve the above technical problems.

[0061] For the convenience of description and understanding, the state of the display device in use is taken as a reference, the direction of the display device facing the user is front, the direction of the display device facing away from the user is rear, the vertical direction of the display device is up-down direction, and the width direction of the display device is left-right direction.

[0062] Figure 1 is a partial structure schematic view of the display device of the utility model, wherein the rear shell is not shown. Figure 2 is a connection schematic view of the flame-retardant plate on the rear shell.

[0063] Referring to Figure 1 and Figure 2 The application provides a display device, which is mainly television, display and the like. The display device can be used as an independent display source, and can also be matched with other functional components, so that the display device has corresponding functions. Next, taking the television as an example, the scheme of the application is introduced.

[0064] In some embodiments, the display device can include a back plate 100 which is a main support of the display device, and a front side of the back plate 100 is formed with a mounting cavity for mounting a light source and an optical film set and the like.

[0065] The back plate 100 is arranged along a vertical direction. A peripheral edge of the back plate 100 is formed with a frame which protrudes forward; the frame is annularly arranged and extends around the edge of the back plate 100. The frame protrudes forward beyond the front side of the back plate 100, and the frame and the back plate 100 enclose a mounting cavity which is open at the front side for mounting a backlight and an optical film set. A display panel is fixed at a front end of the frame.

[0066] 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 described here.

[0067] In other embodiments, the display device can further include a display panel which is fixed at the front side of the back plate 100. The display panel is used to display image information for a user to view. There is a gap between the front side of the back plate 100 and the rear side of the display panel to form a mounting cavity, and the optical film set and the light source are arranged in the gap. The light emitted by the light source displays image information on the display panel after passing through the optical film set.

[0068] The backlight is used to emit light, and the backlight and the optical film set are arranged in parallel, with the backlight located at the light entrance side behind the optical film set for emitting light towards the optical film set, and the optical film set is located in front of the backlight for obtaining uniform white light at the light exit side in front of the optical film set after the light passes through the optical film set.

[0069] The optical film set is arranged in front of the backlight and has a gap between the backlight for improving the uniformity and enhancing the brightness of the light source. The optical film set includes a diffusion plate and a plurality of film pieces arranged in sequence. The plurality of film pieces include a light enhancement piece and a plurality of prism pieces, or the plurality of film pieces include a plurality of prism pieces.

[0070] In some embodiments, the display device can further include a rear shell 300 which is fixed at the back of the back plate 100. A front side of the rear shell 300 and a rear side of the back plate 100 form a containing space. The rear side of the back plate 100 is provided with electronic components which are arranged in the containing space. The electronic components include a main control board, a power supply board, a loudspeaker and a power strip. The electronic components are fixed at the back of the back plate 100 and located within the coverage of the rear shell 300 to protect the electronic components by the rear shell 300. The main control board is mainly used for operating a control system and corresponding output of operation instructions. The main control board is located between the back of the back plate 100 and the rear shell 300 and is fixed on the back of the back plate 100.

[0071] In some embodiments, the main control board is mainly used for operation of the control system of the display device and outputs operation instructions accordingly.

[0072] The power board is separately arranged or integrated on the main control board and fixed on the back of the back plate 100, and is mainly used for providing driving voltage or stable working voltage to the main control board and keeping the output current stable when the circuit on the main control board works.

[0073] The speaker is arranged on the back of the back plate 100 and is mainly used for cooperating with the interface displayed by the display panel to emit corresponding sound. The power strip is provided with a plurality of different types of interfaces for connecting external devices to receive signals of the external devices or output signals to the external devices. In some embodiments, the power strip is integrated on the main control board. Other driving components can be a remote control module or a voice module.

[0074] During the working of the display device, the power source of the power board can reach three levels (PS, Power Supply), forming a PS3 circuit. The power board constitutes a first circuit board. The power board as a high-power source circuit generates a large amount of heat during working. In order to ensure safety and avoid fire, the corresponding position of the first circuit board on the back plate 100 and the rear shell 300 is provided with corresponding fireproof material.

[0075] In one embodiment, the back plate 100 is made of metal material. The metal material structure not only can prevent fire, but also can ensure the strength of the metal material structure to make the back plate 100 thinner, so that the display device can be made thinner.

[0076] In other embodiments, the back plate 100 is made of other materials, and the back plate 100 is provided with corresponding fireproof measures.

[0077] In some embodiments, any one or more of the main control board, the power board, the electronic components and the like are the first circuit board, and the first circuit board is arranged in the same area on the back plate 100.

[0078] Figure 3 is a schematic view of the back of the back plate of the utility model.

[0079] Referring to Figures 1 to 3 , the back of the back plate 100 is provided with a first area 110 and a second area 120 arranged outside the first area 110; the first circuit board is arranged on the back of the back plate 100 and located in the first area 110.

[0080] The first area 110 can be arranged at any area on the back of the back plate 100, such as any one or more of the upper, lower, left, right and middle portions of the back of the back plate 100.

[0081] In some embodiments, the first area 110 is arranged as one, and the first circuit boards are arranged in the single first area 110.

[0082] In some other embodiments, the first area 110 is arranged as a plurality, and the plurality of areas are arranged in a scattered manner, and the first circuit boards are arranged in the first areas 110 at different positions in a scattered manner.

[0083] Figure 4 FIG. 4 is a structural schematic view of the rear shell from another perspective according to the present application. Figure 5 FIG. 4 is a structural schematic view of the rear shell from another perspective according to the present application. Figure 6 FIG. 4 is a structural schematic view of the rear shell from another perspective according to the present application. Figure 5 FIG. 4 is a structural schematic view of the rear shell from another perspective according to the present application. Figure 7 FIG. 4 is a structural schematic view of the rear shell from another perspective according to the present application.

[0084] Referring to FIG. 1, Figures 2 to 7 The rear shell 300 covers the back of the back plate 100, and the rear shell 300 covers at least the first area 110. For example, the rear shell 300 covers the first area 110 and the second area 120, and the first circuit boards are arranged in the first area 110. The electronic components other than the first circuit boards are arranged in the second area 120. The projection of the rear shell on the back plate covers the first area and the second area. The rear cover covers the electronic components on the back of the back plate.

[0085] The display device further comprises a fireproof plate 400, which is made of a material with a fireproof grade higher than V1, and can effectively prevent the fireproof plate 400 from catching fire. The fireproof plate 400 is fixed to the front side of the rear shell 300, and the projection of the fireproof plate 400 on the back plate covers the first area 110, and the projection of the fireproof plate 400 on the back plate covers the first circuit boards, so as to block the heat of the first circuit boards in the first area 110 from being transmitted to the rear shell 300.

[0086] In some embodiments, the display device further comprises a second circuit board arranged on the back plate 100; the second circuit board can include other electronic components other than the first circuit boards. The projection of the fireproof plate on the back plate does not cover the second circuit board. The projection of the fireproof plate on the back plate does not cover the second circuit board, and the projection of the fireproof plate on the back plate only covers the first circuit boards, so that the fireproof plate has a smaller area, the fireproof plate has a smaller size, thereby reducing the cost of the fireproof plate.

[0087] In some embodiments, the rear shell 300 is provided with a first limiting structure, and the first limiting structure is used to clasp the fireproof plate 400, so that the fireproof plate 400 is detachably connected to the front side of the rear shell 300.

[0088] In some embodiments, the rear shell 300 is provided with a first limiting structure, and the first limiting structure is used to clasp the fireproof plate 400, so that the fireproof plate 400 is detachably connected to the front side of the rear shell 300.Figure 8 is Figure 2 is an enlarged view of A in FIG. Figure 9 is a structural schematic view of the fireproof board. Figure 10 is Figure 9 is an enlarged view of C in FIG.

[0089] Referring to Figures 3 to 10 The second limiting structure is detachably connected to the first limiting structure, so that the fireproof board 400 is detachably connected to the rear shell 300, thereby facilitating the installation of the fireproof board 400 on the front side of the rear shell 300.

[0090] In some embodiments, the first limiting structure is a buckle 310 protruding from the front side of the rear shell 300, and the second limiting structure is a clamping hole 410 formed on the fireproof board 400. The buckle 310 is detachably clamped in the clamping hole 410, and the detachable installation of the buckle 310 in the clamping hole 410 drives the detachable installation of the fireproof board 400 on the rear shell 300.

[0091] It should be noted that in other embodiments, the first limiting structure is the clamping hole 410, and the second limiting structure is the buckle 310.

[0092] In one embodiment, the first limiting structure and the second limiting structure are connecting structures such as bolts or screws.

[0093] In some embodiments, the first limiting structure is a buckle 310 protruding from the front side of the rear shell 300, and the second limiting structure is a clamping hole 410 formed on the fireproof board 400. The clamping hole 410 penetrates the fireproof board 400 in the front-rear direction. The buckle 310 can include a stop segment 311 and a clamping tongue segment 312. The stop segment 311 protrudes forward from the rear shell 300, the rear end of the stop segment 311 is connected to the rear shell 300, and the front end of the stop segment 311 is connected to the clamping tongue segment 312.

[0094] When the fireproof board 400 is connected to the rear shell 300, the stop segment 311 is arranged in the clamping hole 410. The stop segment 311 penetrates the clamping hole 410, the clamping tongue segment 312 is connected to the front end of the stop segment 311, the rear side of the clamping tongue segment 312 is attached to the front side of the fireproof board 400, and the rear side of the fireproof board 400 is attached to the front side of the rear shell 300.

[0095] When the rear side of the fireproof board 400 is attached to the front side of the rear shell 300, there is no gap between the front side of the rear shell 300 and the fireproof board 400, which ensures that the fireproof board 400 is tightly connected to the rear shell 300. At the same time, it can ensure that the structure formed by attaching the rear shell 300 and the fireproof board 400 has a smaller thickness in the front-rear direction, so as to ensure that the display device has a smaller thickness, and the display device is thinner in the front-rear direction.

[0096] The stop segment 311 is arranged in the clamping hole 410 and abuts against the upper side wall of the clamping hole 410 to support the fireproof plate 400 and limit the downward falling of the fireproof plate 400. Further, the upper surface of the stop segment 311 is formed with a protruding limiting rib 313 which is stopped at the upper side wall of the clamping hole 410 to support the fireproof plate 400 upward.

[0097] In some embodiments, the clamping tongue segment 312 is bent from the front end of the stop segment 311 and extends upward, the rear side of the clamping tongue segment 312 abuts against the front side of the fireproof plate 400 which is fitted on the front side of the rear shell 300, the clamping tongue segment 312 presses the rear shell 300 on the front side of the rear shell 300 so that the rear shell 300 and the fireproof plate 400 have a smaller thickness in the front-rear direction after being fitted.

[0098] In other embodiments, the front side of the fireproof plate 400 is formed with a protruding guide rib 420 above the clamping hole 410, and the rear side of the clamping tongue segment 312 is fitted on the guide rib 420. The guide rib 420 protrudes from the front side of the fireproof plate 400 and can be elastically deformed when the clamping tongue segment 312 is fitted on the guide rib 420, thereby ensuring the pressing of the clamping tongue on the fireproof plate 400 and the reliability of the position of the fireproof plate 400.

[0099] In some embodiments, the guide rib 420 extends in the up-down direction, and the front end of the guide rib 420 which faces the back plate has a height which increases in the direction away from the clamping hole, thereby forming a guide surface 421. The guide surface 421 is arranged upward and forward, and the clamping tongue segment 312 can move along the guide surface 421 on the guide rib 420 through the guiding effect of the guide surface 421, thereby facilitating the fitting of the rear side of the clamping segment on the front side of the guide rib 420 and maintaining the clamping between the clamping tongue segment 312 of the fireproof plate 400 and the front side of the rear shell 300.

[0100] In some embodiments, there is a gap between the clamping tongue segment 312 and the front side of the rear shell 300, and a reinforcing rib 314 is arranged between the rear shell 300 and the clamping tongue segment 312. The front and rear ends of the reinforcing rib 314 are formed on the opposite surfaces of the rear shell 300 and the clamping tongue segment 312, respectively. The arrangement of the reinforcing rib 314 enhances the structural strength of the clamping tongue segment 312, thereby effectively avoiding the breakage of the clamping tongue segment 312 and the stop segment 311.

[0101] The relief hole 430 is arranged on the fireproof plate 400 above the clamping hole 410; the lower end of the relief hole 430 is communicated with the clamping hole 410; the reinforcing rib 314 is arranged in the relief hole 430; the reinforcing rib 314 is arranged between the rear shell 300 and the clamping tongue section 312, which strengthens the structural strength of the clamping buckle 310. The relief hole 430 is arranged on the fireproof plate 400, and the reinforcing rib 314 is arranged in the relief hole 430, so that the arrangement of the reinforcing rib 314 does not affect the clamping of the clamping buckle 310 on the fireproof plate 400.

[0102] The guide ribs 420 are arranged on both sides of the relief hole 430, so that the stress of the fireproof plate on both sides of the relief hole is uniform, so as to facilitate the cooperation of the clamping buckle 310 and the guide rib 420. The guide ribs 420 are arranged on both sides of the relief hole 430, which can also enhance the structural strength of the fireproof plate on the side of the relief hole.

[0103] In other embodiments, the reinforcing rib 314 extends in the up-down direction; the upper end of the reinforcing rib 314 extends to the upper end of the clamping tongue section 312; and the lower end of the reinforcing rib 314 extends to the stop section 311, so that the clamping buckle 310 has greater structural strength.

[0104] In some embodiments, the protruding stop rib 315 is formed on the rear side of the clamping tongue section 312; the distance between the stop rib 315 and the stop section 311 is greater than the extension length of the guide rib 420, so that the stop rib 315 stops at the upper end of the guide rib 420. The stop of the stop rib 315 at the upper end of the guide rib 420 supports the guide rib 420 and limits the downward movement of the stop rib 315. The stop rib 315 is arranged on the clamping buckle on the rear shell, and the guide rib is arranged on the fireproof plate, so as to limit the upward movement of the fireproof plate relative to the rear shell and avoid the upward disengagement of the fireproof plate from the clamping buckle.

[0105] In some embodiments, the clamping hole 410 penetrates the fireproof plate 400 in the front-rear direction; the clamping buckle 310 is arranged in the clamping hole 410 and overlaps the front side of the fireproof plate 400; the projections of the clamping hole 410 and the clamping buckle 310 on the back plate 100 in the front direction are both located outside the first area 110. The projections of the clamping hole 410 and the clamping buckle 310 on the back plate 100 in the front direction are both located outside the first area 110, so that the clamping hole 410 and the clamping buckle 310 can be misaligned with the first circuit board in the first area 110. The clamping buckle 310 is arranged in the clamping hole 410 and overlaps the front side of the fireproof plate 400, which limits the forward movement of the fireproof plate 400 and limits the fireproof plate 400 between the front side of the fireproof plate 400 and the clamping buckle 310. The projections of the clamping hole 410 and the clamping buckle 310 on the back plate 100 in the front direction do not cover the first circuit board, so that the heat on the first circuit board can be effectively prevented from being transferred to the clamping buckle 310, the risk of fire of the clamping buckle 310 is effectively reduced, and the flame is prevented from being transmitted from the clamping buckle 310 to the rear shell 300.

[0106] The second limiting structure is provided with a plurality of second limiting structures arranged close to the edge of the flame-retardant plate 400; the first limiting structure and the second limiting structure are one-to-one corresponding. The plurality of second limiting structures are arranged close to the edge of the flame-retardant plate 400, the first limiting structure on the rear shell 300 corresponds to the second limiting structure, and the first limiting structure on the rear shell 300 is arranged close to the edge of the flame-retardant plate 400, so as to reduce the probability of heat transfer of the first circuit board to the first limiting structure and effectively avoid the first limiting structure from being ignited.

[0107] In some embodiments, the rear shell 300 is further provided with a fixing hole 320; the flame-retardant plate 400 is provided with a through hole 440 penetrating front and back, and the fastener can pass through the through hole 440 and the fixing hole 320 and be screwed into the fixing hole 320. The fastener can pass through the through hole 440 and the fixing hole 320 and be screwed into the fixing hole 320, so as to fix the flame-retardant plate 400 on the front side of the rear shell 300. The fastener is a bolt or a screw, and the fastener is made of metal material, so as to avoid ignition.

[0108] In addition, the terms "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implying the number of the technical features indicated. Therefore, the features defined as "first", "second", "third", "fourth", "fifth", "sixth", "seventh" and "eighth" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "a plurality of" is two or more, unless otherwise explicitly specified and limited.

[0109] In the present application, unless otherwise explicitly specified and limited, the terms "assembly", "connection" and the like should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrated; it can be mechanical connection, or electrical connection; it can be direct connection, or indirect connection through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances. In the description of the present application, the description of the terms "some embodiments", "exemplarily" and the like means that the specific features, structures, materials or characteristics described in conjunction with the embodiments or examples are contained in at least one embodiment or example of the present application. In the present application, the illustrative description 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, those skilled in the art can combine and combine the different embodiments or examples described in the present application and the features of different embodiments or examples without contradiction.

[0110] Although the embodiments of the present application have been shown and described above, it is to be understood that the above embodiments are merely exemplary, and are not to be understood as limiting the present application, and any changes, modifications, replacements and variations of the above embodiments made by those skilled in the art within the scope of the present application should be included in the scope of the present application.

Claims

1. A display device, characterized by comprising: The display device comprises: a back plate (100); a first circuit board arranged on the back of the back plate (100), the first circuit board generating heat above a preset threshold in an operating state; a rear shell (300) covering the back of the back plate (100); a fireproof plate (400) fixed on the side of the rear shell (300) facing the back plate (100), the projection of the fireproof plate on the back plate covering the first circuit board; the fireproof plate (400) is made of a material with a fireproof grade higher than V1.

2. The display device according to claim 1, wherein the side of the rear shell (300) facing the back plate (100) is provided with a first limiting structure, which is a buckle (310) protruding from the front side of the rear shell (300); the fireproof plate (400) is provided with a second limiting structure, which is a clamping hole (410) formed on the fireproof plate (400); the buckle (310) is detachably clamped in the clamping hole (410).

3. The display device according to claim 2, wherein the clamping hole (410) penetrates the fireproof plate (400) in the front-rear direction; the buckle (310) is arranged in the clamping hole (410) and overlaps the front side of the fireproof plate (400); the projections of the clamping hole (410) and the buckle (310) on the back plate (100) do not cover the first circuit board.

4. The display device according to claim 2, wherein the buckle (310) comprises: a stop segment (311) protruding forward from the rear shell (300); the stop segment (311) is arranged in the clamping hole (410); a clamping tongue segment (312) bent from the front end of the stop segment (311) and extending upward, the rear side of the clamping tongue segment (312) abutting against the front side of the fireproof plate (400), and the rear side of the fireproof plate (400) abutting against the front side of the rear shell (300).

5. The display device according to claim 4, wherein a protruding guide rib (420) is formed on the front side of the fireproof plate (400) above the clamping hole (410), the guide rib (420) extending in the up-down direction; the front end of the guide rib (420) facing the back plate has a height increasing in the direction away from the clamping hole, forming a guide surface (421); a protruding stop rib (315) is formed on the rear side of the clamping tongue segment (312); the distance between the clamping tongue segment (312) and the stop segment (311) is greater than the extension length of the guide rib (420), so that the rear side of the stop rib (315) abuts against the front end of the guide rib (420).

6. The display device according to claim 5, wherein the distance between the stop rib (315) and the stop segment (311) is greater than the extension length of the guide rib (420), so that the stop rib (315) stops at the upper end of the guide rib (420).

7. The display device according to claim 5, wherein The card tongue section (312) and the front side of the rear shell (300) have a gap; the rear shell (300) and the card tongue section (312) are provided with a reinforcing rib (314); The fireproof plate (400) is provided with an avoiding hole (430) above the card hole (410); the lower end of the avoiding hole (430) is communicated with the card hole (410); the avoiding hole (430) is provided with the guide rib (420) on both sides respectively; The reinforcing rib (314) is located in the avoiding hole (430).

8. The display device of claim 4, wherein, The upper surface of the stop section (311) is formed with a protruding limiting rib (313); the limiting rib (313) is stopped at the upper side wall of the card hole (410).

9. The display device of any one of claims 1 to 8, wherein, The fireproof grade of the rear shell (300) is lower than that of the fireproof plate (400).

10. The display device of any one of claims 1 to 8, wherein, The display device further comprises a second circuit board arranged on the back plate; The projection of the fireproof plate on the back plate does not cover the second circuit board.

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