Display apparatus

Abstract

To provide a display apparatus capable of reducing the number of components and suppressing influence caused by thermal expansion.SOLUTION: A display apparatus comprises: a display panel which performs display; a chassis which is provided on a rear side of the display panel, and to which a circuit board is attached; a rear cabinet which covers the chassis; a connection member which is attached to the side of the rear cabinet of the chassis and connects the rear cabinet and the chassis; and a holding part which slidably holds the connection member.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present disclosure relates to a display device. [Background technology]

[0002] Patent Document 1 proposes a technique for attaching hook members, which are used to attach a rear cabinet to a chassis in a display device, to the rear surface of the chassis using screws. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2020-31349 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, the hook members are fixed to the chassis using screws, which increases the number of parts, and when thermal expansion occurs in the hook members, warping occurs in the rear cabinet that engages with the hook members.

[0005] In one aspect, an object of the present disclosure is to provide a display device that can reduce the number of parts and suppress the effects of thermal expansion. [Means for solving the problem]

[0006] A display device according to one aspect of the present invention comprises a display panel for displaying information, a chassis provided on the rear side of the display panel and having a circuit board attached thereto, a rear cabinet covering the chassis, a connecting member attached to the rear cabinet side of the chassis and connecting the rear cabinet and the chassis, and a holding portion for slidably holding the connecting member. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is an exploded perspective view showing a display panel, a chassis, and a rear cabinet in a display device according to a first embodiment. [Figure 2] 2 is a perspective view of the chassis of FIG. 1 as seen from the rear side. [Figure 3A] FIG. 10 is a perspective view of one connection member as seen from the rear cabinet side. [Figure 3B] FIG. 10 is a perspective view of one connection member as seen from the chassis side. [Figure 4] FIG. 2 is a perspective view of the rear cabinet as seen from the front side. [Figure 5] FIG. 10 is a perspective view showing one engagement protrusion. [Figure 6] 10A to 10C are diagrams illustrating an example of an operation for attaching a connecting member to a chassis. [Figure 7] FIG. 10 is a plan view showing the state in which the connecting member is fixed, as viewed from above. [Figure 8] FIG. 10 is a plan view showing the state in which the connecting member is fixed, as viewed from below. [Figure 9A] FIG. 10 is a cross-sectional view of the state at the start of the engagement operation. [Figure 9B] FIG. 10 is a cross-sectional view of the state when engagement is complete. [Figure 10] FIG. 10 is a perspective view of a fixing portion before a connecting member is fixed. [Figure 11] 4 is a perspective view showing a part in a state where an engaging protrusion is engaged with a connecting member in the first embodiment. FIG. [Figure 12] FIG. 12 is a perspective view of the state of FIG. 11 as seen from the rear side. [Figure 13] 4 is a perspective cross-sectional view of the first embodiment in a state where an engaging protrusion is engaged with a connecting member. FIG. [Figure 14] FIG. 10 is a perspective cross-sectional view of a state in which an engaging protrusion is engaged with a connecting member in a second embodiment. [Figure 15] 14 is a perspective cross-sectional view of a portion where a contact portion in FIG. 13 is formed, as viewed from the Y direction. [Figure 16]FIG. 10 is a perspective view showing another example of a state in which the engaging protrusion is engaged with the connecting member in the second embodiment. [Figure 17] 11 is a cross-sectional view of the third embodiment, seen from the X direction, showing a state in which an engaging protrusion is engaged with a connecting member. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0008] First Embodiment A first embodiment will be described. As shown in Fig. 1, the display device according to the first embodiment includes a display panel DP, a chassis 100, and a rear cabinet 200. The display panel DP is a display panel that displays images and the like. The rear cabinet 200 is fixed to the chassis 100.

[0009] FIG. 1 is an exploded perspective view showing a display panel DP, a chassis 100, and a rear cabinet 200 of a display device, as viewed from the chassis 100 side (as viewed from the front side of the display device).

[0010] Next, the chassis and connecting members will be described. Fig. 2 is a perspective view of the chassis 100 as seen from the rear side. A plurality of connecting members 110 are attached to the rear surface of the chassis 100 (the surface facing the rear cabinet 200). The attachment positions, number of attachments, and attachment structure of the connecting members 110 are not limited to the example shown in Fig. 2. The connecting members 110 are sometimes called hook members.

[0011] Fig. 3A is a perspective view of one connection member 110 as seen from the side of rear cabinet 200. Fig. 3B is a perspective view of one connection member 110 as seen from the side of chassis 100. Hereinafter, the surface of connection member 110 that abuts against chassis 100 may be referred to as the lower surface.

[0012] 3A and 3B, the longitudinal direction of connection member 110 is referred to as the X direction, the lateral direction of connection member 110 as the Y direction, and the height direction of connection member 110 as the Z direction. Hereinafter, the X direction may also be referred to as the left-right direction. One direction of the X directions (first directions) is referred to as the X1 direction, and the direction opposite to the X1 direction is referred to as the X2 direction.

[0013] The Y direction is sometimes referred to as the depth direction. One direction of the Y directions is called the Y1 direction, and the direction opposite to the Y1 direction is called the Y2 direction. One direction of the Z directions, which are height directions, is called the Z1 direction, and the direction opposite to the Z1 direction is called the Z2 direction.

[0014] 3A and 3B, the connecting member 110 has a base portion 111 and a pair of engaging arms 112. The engaging arms are also called engaging ribs. The base portion 111 is a plate-like member having a substantially rectangular shape. When the connecting member 110 is attached to the chassis 100, the lower surface of the base portion 111 (the surface located on the Z2 direction side) faces or abuts against the chassis 100.

[0015] 3A and 3B, the engaging arms 112 are erected so as to protrude upward (in the Z1 direction) from the upper surface of the base portion 111, and the two engaging arms 112 are arranged side by side so as to face each other in the connecting member 110. The arrangement direction of the two opposing engaging arms 112 coincides with the longitudinal direction of the base portion 111 (X direction: a direction perpendicular to the Y and Z directions).

[0016] Each of the engaging arms 112 has a shape having a mountain-shaped protrusion 112A that bulges toward the opposing other engaging arm 112. The distance between the two opposing engaging arms 112 narrows at the top of the protrusion 112A, forming a constriction, and then widens again from the top toward the tip of the engaging arm 112. These protrusions 112A are inserted into recesses 213 of the rear cabinet 200 when engaging protrusions 210 (protrusions) (described later) protruding from the rear cabinet 200 (protruding in the Z2 direction) are fitted and engaged when the rear cabinet 200 is fixed to the chassis 100. The configuration of the engaging protrusions 210 and the engagement operation of the engaging protrusions 210 will be described later.

[0017] Each engaging arm 112 has a leg 112B extending downward (in the Z2 direction) from the lower side (Z2 side) of the protrusion 112A. The width of the protrusion 112A in the Y direction is the same as the width of the leg 112B in the Y direction.

[0018] A first opening 111A is provided in the base portion 111 between the two engaging arms 112. The shape of this first opening 111A in a plan view (the shape when viewed from a direction along the Z direction) is substantially rectangular (approximately oblong).

[0019] The length dimension (opening dimension) of the first opening 111A in the X direction is set to be shorter than the length dimension of the base portion 111 in the X direction by a predetermined dimension, and the length dimension (opening dimension) in the Y direction is set to be shorter than the length dimension of the base portion 111 in the Y direction by a predetermined dimension.

[0020] As an example, the length dimension in the X direction of first opening 111A is set to about 1 / 3 of the length dimension in the X direction of base portion 111. Also, as an example, the length dimension in the Y direction of first opening 111A is set to about 4 / 5 of the length dimension in the Y direction of base portion 111. These dimensional ratios are not limited to these.

[0021] The opening shape of these first openings 111A is determined in relation to the shape of the engaging protrusions 210, which will be described later. Specifically, the opening shape is determined so that the tip portions of the engaging protrusions 210 can be inserted. The relationship between the opening shape of these first openings 111A and the shape of the engaging protrusions 210 will be described later.

[0022] The first opening 111A is formed at a position that is set to approximately the center in the widthwise direction (Y direction) of the base portion 111, but is set at a position closer to the X1 direction than the center in the lengthwise direction (X direction) of the base portion 111. This point will be described in detail later.

[0023] The pair of engaging arms 112 (more specifically, legs 112B) are continuous with the opening edges of the first opening 111A (the opening edges located on the X1 direction side and extending in the Y direction, and the opening edges located on the X2 direction side and extending in the Y direction), and extend upward (in the Z1 direction) from the opening edges. Therefore, in a plan view of the connecting member 110, each of the protrusions 112A is located inside the opening edges of the first opening 111A (they are located above the first opening 111A).

[0024] Furthermore, the connecting member 110 has grooves 300 extending along the Y direction on the upper surface of the base portion 111 of each engaging arm 112 at its base (where the leg portion 112B is connected to the base portion 111). The grooves 300 are recessed downward (in the Z2 direction). The grooves 300 are provided to ensure the elasticity of the engaging arms 112.

[0025] The depth of the groove 300 may be set to a dimension that ensures sufficient elasticity of the engaging arm 112 during the engagement operation of the engaging protrusion 210. This dimension is set in advance, for example, through experiments or simulations. Note that similar grooves are also formed on the outer sides of each engaging arm 112 in the Y direction (Y1 direction side and Y2 direction side). This shape allows the connecting member 110 to be removed from the mold when it is molded.

[0026] The provision of the grooves 300 ensures sufficient elasticity at the base of each engaging arm 112. This prevents cracks from occurring at the base of each engaging arm 112 when engaging the engaging protrusion 210.

[0027] 3B, a first protrusion 150 is provided on the lower surface 111a of the base portion 111 of the connection member 110. In addition, a plurality of protrusions 140 are provided on the lower surface 111a. Details will be described later.

[0028] Next, the rear cabinet and the engaging protrusion will be described. Fig. 4 is a perspective view of the rear cabinet 200 as seen from the front side. The rear cabinet 200 is a member that is attached to the chassis 100 to cover the rear side of the chassis 100.

[0029] A plurality of engagement protrusions 210 are provided on the front surface of the rear cabinet 200 (the surface facing the chassis 100). The number of engagement protrusions 210 is the same as the number of connection members 110 on the chassis 100. The positions at which the engagement protrusions 210 are formed also face the attachment positions of the connection members 110 on the chassis 100. The engagement protrusions 210 may be molded integrally with the rear cabinet 200 from resin, for example.

[0030] 5 is a perspective view showing one of the multiple engagement protrusions 210 provided on the front surface of rear cabinet 200. Engagement protrusion 210 has a base 211 and a head 212, and has a depression 213 near the boundary between base 211 and head 212. Depression 213 is configured as a constricted portion whose dimension in the X direction is set shorter than the dimension of base 211 and head 212 in the X direction.

[0031] The recessed portion 213 is a portion that is inserted into and fitted with the protruding portion 112A of the connecting member 110. The base 211 is formed to stand upright from the rear cabinet 200, but the height thereof does not need to be the same for all of the engaging protrusions 210. In other words, the surface of the rear cabinet 200 on which the engaging protrusions 210 are formed is not necessarily a uniform plane, and therefore the distance between the opposing surfaces of the rear cabinet 200 and the chassis 100 varies depending on the positions at which the engaging protrusions 210 are formed. For this reason, the height of the base 211 is set according to the distance between the opposing surfaces of the rear cabinet 200 and the chassis 100 at the positions at which each engaging protrusion 210 is formed.

[0032] Next, an example of the work of attaching the connection member 110 to the chassis 100 will be described. Fig. 6 is a diagram showing an example of the work of attaching the connection member 110 to the chassis 100. In Fig. 6, the connection member 110 is attached to a fixing portion 400 of the chassis 100 and fixed.

[0033] The fixing portion 400 is a portion for fixing the connecting member 110, and is a part of the chassis 100. The fixing portion 400 is formed corresponding to the above-mentioned engaging protrusion 210. Since the rear cabinet 200 is provided with a plurality of engaging protrusions 210, a plurality of fixing portions 400 are formed on the chassis 100.

[0034] The top surface 401 of the fixed part 400 is a plane that is slightly higher than the plane of the chassis 100. The top surface 401 has two substantially rectangular second openings 402 formed therein. In the example of Fig. 6, the two second openings 402 have the same shape. Furthermore, the length of each second opening 402 in the left-right direction (X direction) is longer than the length in the depth direction (Y direction).

[0035] An abutment portion 403 extending in the left-right direction (X direction) is formed between the two second openings 402. The abutment portion 403 is a part of the chassis 100. The abutment portion 403 will be described in detail later.

[0036] A pair of holding portions 410 are formed above the two second openings 402. The pair of holding portions 410 are formed so as to be located at the top of the outer sides (sides in the Y direction) that sandwich the two second openings 402. The pair of holding portions 410 have the same shape.

[0037] The holding portion 410 is formed by a rising portion 410A and a first flat portion 410B. The rising portion 410A is a portion that rises along the Z direction (a plane along the Z direction). The first flat portion 410B is a surface that continues from the rising portion 410A and is parallel to the surface of the chassis 100 and the top surface portion 401.

[0038] For example, rising portion 410A and first flat portion 410B may be formed by bending rising portion 410A of chassis 100 in the Z direction and bending first flat portion 410B in a direction parallel to the plane of chassis 100. However, holding portion 410 may be formed from a member different from chassis 100.

[0039] The fixed part 400 also has a recess 420. The recess 420 is a portion for fitting with the first protrusion 150 provided on the surface of the above-mentioned connecting member 110 facing the chassis 100. The recess 420 has a depth that allows the first protrusion 150 to be inserted entirely therein.

[0040] 6 (insertion direction: X direction), the connection member 110 is inserted into the fixed part 400. For example, the thickness of the connection member 110 (thickness of the base part 111) may be approximately the same as the height of the rising part 410A of the holding part 410 (height from the upper surface part 401 to the first flat part 410B).

[0041] A first protrusion 150 is provided on the underside 111a of the base portion 111 of the connecting member 110. The connecting member 110 is made of a material such as plastic and has a certain degree of flexibility. Therefore, when the connecting member 110 is inserted into the holding portion 410 in the insertion direction indicated by the arrow, the connecting member 110 receives resistance from the holding portion 410 and is inserted in the direction X2 while bending.

[0042] When the connecting member 110 is inserted in the direction X2, the first protrusion 150 provided near the tip of the connecting member 110 fits into the recess 420 of the fixing part 400. The connecting member 110 is fixed to the fixing part 400.

[0043] Fig. 7 shows a plan view of the connecting member 110 fixed as viewed from above (direction Z2). Fig. 8 shows a plan view of the connecting member 110 fixed as viewed from below (direction Z1). In Fig. 8, the connecting member 110 is indicated by a dashed line. As shown in Fig. 8, the length in the X direction of the recess 420 of the fixing part 400 is longer than the length in the X direction of the first protrusion 150 of the connecting member 110.

[0044] As a result, when the connection member 110 is fixed to the fixing part 400, the connection member 110 can slide in the X direction (the direction of the double arrow). Here, a circuit board (described later) is disposed on the surface of the chassis 100 opposite to the surface to which the connection member 110 is fixed. For example, when the display device is in use, the circuit mounted on the circuit board generates heat. The heat from the circuit board is transferred to the connection member 110 via the chassis 100.

[0045] The chassis 100 is made of a metal material, and the connecting member 110 is made of a resin material such as plastic. Therefore, there is a difference in the thermal expansion coefficient between the chassis 100 and the connecting member 110. Because of this difference in the thermal expansion coefficient, when the circuit board generates heat, the connecting member 110 thermally expands more than the chassis 100.

[0046] The connecting member 110 is fixedly held by the holding portion 410, but since the length of the recess 420 in the X direction is longer than the length of the first protrusion 150 of the connecting member 110 in the X direction, the connecting member 110 is slidable in the X direction.

[0047] When the circuit board generates heat and the heat is transferred from the circuit board to the connecting member 110, the connecting member 110 slides in the X direction. As a result, the connecting member 110 does not warp. As described above, the connecting member 110 engages with the engaging protrusions 210 of the rear cabinet 200. Because the connecting member 110 does not warp, a force that would warp the rear cabinet 200 is prevented from acting on the engaging protrusions 210 that are engaged with the pair of engaging arms 112 of the connecting member 110. As a result, the rear cabinet 200 can be prevented from warping.

[0048] Next, a description will be given of the engagement operation of the engagement protrusion 210. When the rear cabinet 200 is fixed to the chassis 100, the engagement protrusion 210 is fitted between the two engagement arms 112 of the connection member 110 and engaged.

[0049] 9A and 9B are cross-sectional views for explaining the operation of the engaging protrusion 210 during the engaging operation. Fig. 9A is a cross-sectional view showing the state at the start of the engaging operation, and Fig. 9B is a cross-sectional view showing the state when the engagement is completed.

[0050] 9A, head 212 of engaging protrusion 210 is pressed against convex portion 112A of each engaging arm 112 so as to be inserted into the space between each engaging arm 112. This pressing force causes each engaging arm 112 to be pushed outward. When the distance between convex portions 112A (distance in the X direction) reaches the dimension of head 212 of engaging protrusion 210 (dimension in the X direction), head 212 climbs over convex portion 112A and reaches leg portion 112B, as shown in FIG.

[0051] As a result, each engaging arm 112 returns to its original shape, and the convex portion 112A of each engaging arm 112 is inserted (fitted) into each recessed portion 213 of the engaging protrusion 210, so that the engaging protrusion 210 fits between and engages the engaging arms 112. By performing such an engaging operation at the respective positions of the connecting members 110 and the engaging protrusions 210, the rear cabinet 200 is fixed to the chassis 100.

[0052] By engaging the engaging protrusions 210 provided on the rear cabinet 200 with the connecting members 110 attached to the chassis 100 in this manner, the rear cabinet 200 can be attached to the chassis 100 and fixed.

[0053] This significantly reduces the number of screws exposed on the back of the device compared to the conventional method of fastening the rear cabinet with screws from the back side of the display device, and also improves the aesthetic appearance of the device.

[0054] As a result, the number of screws exposed on the rear surface of the display device can be significantly reduced. Although the number of screws used to fasten rear cabinet 200 can be reduced, screws exposed on the rear surface of the display device may remain. In other words, rear cabinet 200 does not have to be fastened only by the engagement between connecting member 110 and engaging protrusion 210, and auxiliary screws (screws fastened from the rear surface side of the display device) may be used.

[0055] As described above, the engagement position where the convex portion 112A of each engagement arm 112 fits into the recessed portion 213 of the engagement protrusion 210 can be brought closer to the base portion 111. The tip portion of the engagement protrusion 210 is located inside the first opening 111A, and the tip portion of the engagement protrusion 210 and the base portion 111 of the connecting member 110 are held in an overlapping state in the X direction and the Y direction. This allows the engagement position to be brought closer to the base portion 111. This makes it possible to reduce the thickness of the display device. For example, compared to when this embodiment is not applied, the thickness of a display device to which this embodiment is applied can be reduced to about one-third.

[0056] Furthermore, each of the engaging arms 112 is continuous with the edge of the first opening 111A and extends upward (in the Z1 direction) from the edge of the opening. Therefore, in a configuration in which the first opening 111A is provided between the engaging arms 112, it is possible to maximize the opening area of ​​this first opening 111A.

[0057] Next, a more detailed description will be given of the sliding of the connecting member 110 when the connecting member 110 is fixed to the fixed part 400. Fig. 10 is a perspective view of the fixed part 400 before the connecting member 110 is fixed.

[0058] As described above, a pair of holding portions 410 extending in the X direction are formed on the upper surface portion 401 of the fixed part 400, and the connecting member 110 is inserted between the pair of holding portions 410. When the connecting member 110 is inserted and the first convex portion 150 provided near the tip of the connecting member 110 reaches the position of the concave portion 420, the first convex portion 150 fits into the concave portion 420.

[0059] This fixes the connecting member 110 to the chassis 100. The length in the Y direction of the pair of holding portions 410 (the length between the two rising portions 410A) is formed to be approximately the same as or slightly longer than the length in the Y direction of the base portion 111 of the connecting member 110. The height in the Z direction of the pair of holding portions 410 (the length from the upper surface portion 401 to the first flat portion 410B) is formed to be approximately the same as or slightly longer than the thickness in the Z direction of the base portion 111 of the connecting member 110.

[0060] Therefore, when the first protrusion 150 fits into the recess 420 and the connecting member 110 is fixed to the chassis 100, large movements of the connecting member 110 in the X, Y, and Z directions are restricted. This prevents the connecting member 110 from easily falling off the chassis 100.

[0061] Holding portion 410 of chassis 100 slidably holds connecting member 110. As described above, the length in the X direction of recess 420 of fixing portion 400 is longer than the length in the X direction of first protrusion 150 of connecting member 110. As a result, even if connecting member 110 thermally expands, connecting member 110 can slide in the X direction, and therefore, connecting member 110 does not warp. As a result, rear cabinet 200 does not warp either.

[0062] Furthermore, as described above, the length in the Y direction of the pair of holding portions 410 (the length between the two rising portions 410A) may be formed to be slightly longer than the length in the Y direction of the base portion 111 of the connecting member 110. This allows the connecting member 110 to slide in the Y direction as well when the connecting member 110 thermally expands.

[0063] Furthermore, as described above, the height in the Z direction of the pair of holding portions 410 (the length from the upper surface portion 401 to the first flat portion 410B) may be formed to be slightly longer than the thickness in the Z direction of the base portion 111 of the connecting member 110. This allows the connecting member 110 to slide in the Z direction as well when the connecting member 110 thermally expands.

[0064] 11 is a perspective view showing a portion in the first embodiment in a state where the engaging protrusion 210 is engaged with the connecting member 110. The connecting member 110 is held by a holding portion 410. The engaging protrusion 210 of the rear cabinet 200 is engaged with the connecting member 110. In this way, the rear cabinet 200 is attached to the chassis 100.

[0065] 12 is a perspective view of the state of FIG. 11 as seen from the rear side. The above-described circuit board 500 is disposed on the chassis 100. Heat generated by the circuit board 500 is transferred to the connecting member 110 via the chassis 100. In this case, the connecting member 110 thermally expands due to the difference in thermal expansion coefficient between the chassis 100 and the connecting member 110.

[0066] As described above, the holding portion 410 of the chassis 100 slidably holds the connection member 110. As a result, even if the connection member 110 thermally expands, the connection member 110 does not warp due to sliding.

[0067] For example, when the connecting member 110 thermally expands, the first convex portion 150 moves in the X direction within the concave portion 420. As a result, the connecting member 110 is not fixed and moves flexibly, so it does not warp. Therefore, the rear cabinet 200 connected to the connecting member 110 via the engaging protrusions 210 also does not warp.

[0068] 13 is a perspective cross-sectional view showing a state in which the engaging protrusion 210 in the first embodiment is engaged with the connecting member 110. As shown in FIG. 13, the length of the recess 420 in the X direction is longer than the length of the first protrusion 150 of the connecting member 110 in the X direction. As a result, when the connecting member 110 thermally expands, the first protrusion 150 of the connecting member 110 can move in the direction X2, so the connecting member 110 slides. Therefore, the connecting member 110 does not warp. Therefore, as described above, the rear cabinet 200 also does not warp.

[0069] 6, the connecting member 110 is inserted between the pair of holding portions 410 from X1 to X2 until the first protrusion 150 engages with the recess 420. For example, when an operator is inserting the connecting member 110, the connecting member 110 receives resistance from the fixed portion 400 of the chassis 100.

[0070] The first protrusion 150 is a portion that protrudes downward from the connection member 110, and the above-mentioned resistance force also acts on the first protrusion 150. As shown in FIG. 13 , the lower portion of the tip of the first protrusion 150 (in the insertion direction of the connection member 110) is chamfered. By chamfering the lower portion of the tip of the first protrusion 150, a slope 150A is formed at the lower portion of the tip of the first protrusion 150. The slope 150A may be flat or rounded.

[0071] Chamfering the lower portion of the tip of first protrusion 150 reduces the resistance force acting on first protrusion 150 when inserting connecting member 110. This allows connecting member 110 to be smoothly inserted between the pair of holding portions 410.

[0072] Furthermore, connecting member 110 is divided into first portion 110A and second portion 110B with a pair of engaging arms 112 in between. First portion 110A is the portion on the leading end side of connecting member 110 in the insertion direction, and is larger in size than second portion 110B. Second portion 110B is the portion on the trailing end side of connecting member 110 in the insertion direction, and is smaller in size than first portion 110A. By forming first portion 110A on the leading end side of connecting member 110 to be larger in size, it is possible to ensure space for forming a portion such as first protrusion 150.

[0073] As described above, in the display device of the first embodiment, fixed portion 400 of chassis 100 is provided with a pair of holding portions 410 that slidably hold connecting member 110. This eliminates the need for members such as screws for fixing connecting member 110 to chassis 100, thereby reducing the number of parts required when attaching rear cabinet 200 to chassis 100.

[0074] The pair of holding portions 410 slidably hold the connecting member 110. For example, when the connecting member 110 is attached to the fixed portion 400 of the chassis 100, the first protrusion 150 of the connecting member 110 fits into the recess 420 of the fixed portion 400. Because the length of the recess 420 in the X direction is longer than the length of the first protrusion 150 in the X direction, the connecting member 110 slides without warping even if the connecting member 110 thermally expands. As a result, the rear cabinet 200 also does not warp.

[0075] Second Embodiment Next, a second embodiment will be described. As described with reference to Fig. 6, a contact portion 403 is formed on the fixed portion 400. The contact portion 403 is a portion formed between two second openings 402, and is a part of the chassis 100.

[0076] Fig. 14 is a perspective cross-sectional view of a state in which the engaging protrusion 210 in the second embodiment is engaged with the connecting member 110. Fig. 15 is a perspective cross-sectional view of the region where the abutting portion 403 in Fig. 13 is formed, as viewed from the Y direction.

[0077] As described above, the engaging protrusion 210 is pushed between the pair of engaging arms 112 of the connecting member 110, and the engaging protrusion 210 is engaged with the connecting member 110. For example, when an operator pushes the engaging protrusion 210 between the pair of engaging arms 112 of the connecting member 110, the pushing amount of the engaging protrusion 210 may become greater than a predetermined amount.

[0078] In this case, the pushing force may become too large, temporarily increasing the pushing amount beyond the predetermined engagement position. When the pushing amount increases, the force that moves head 212 of engagement protrusion 210 toward circuit board 500 increases.

[0079] Here, a contact portion 403 is formed in the fixed portion 400 at a position facing the head portion 212 at the tip of the engaging protrusion 210 that engages with the pair of engaging arms 112. As a result, even if the pushing amount described above becomes large, the head portion 212 at the tip of the engaging protrusion 210 will contact the contact portion 403 before coming into contact with the circuit board 500.

[0080] Therefore, head 212 at the tip of engaging protrusion 210 does not reach circuit board 500. In other words, abutment portion 403 functions as a stopper portion. This prevents head 212 at the tip of engaging protrusion 210 from contacting circuit board 500, thereby protecting circuit board 500.

[0081] 14 and 15, the abutment portion 403 extends in the X direction. The abutment portion may extend in a direction other than the X direction. FIG. 16 is a perspective view showing another example of a state in which the engagement protrusion 210 in the second embodiment is engaged with the connecting member 110. In the example of FIG. 16, the abutment portion 403 extends in the Y direction and is provided at a position where it abuts against the head 212 at the tip of the engagement protrusion 210.

[0082] Even in this case, head 212 at the tip of engaging protrusion 210 abuts against abutment portion 403 before coming into contact with circuit board 500. This prevents head 212 at the tip of engaging protrusion 210 from coming into contact with circuit board 500 during the engagement operation, thereby protecting circuit board 500. Furthermore, for example, the abutment portion may be provided so as to extend in both the X direction and the Y direction.

[0083] <Third embodiment> Next, a third embodiment will be described. Fig. 17 is a cross-sectional view of the third embodiment, seen from the X direction, in a state where the engaging protrusion 210 is engaged with the connecting member 110. As described above, the upper surface 401 (second flat surface) of the fixed part 400 is formed at a position slightly higher than the flat surface of the chassis 100. Furthermore, the upper surface 401 is formed at a position lower than the first flat surface 410B.

[0084] By forming the upper surface portion 401 of the fixed portion 400 at a position slightly higher than the plane of the chassis 100, a gap of a predetermined distance is formed in the Z direction between the circuit board 500 and the upper surface portion 401. A sheet 600 as shown in FIG. 17 can be attached to this gap.

[0085] 17, the gap between the holding portion 410 and the engaging protrusion 210 is not sealed, and for example, after a period of use of the display device increases, foreign matter such as dust may enter between the holding portion 410 and the engaging protrusion 210. It is undesirable for such foreign matter to adhere to the circuit board 500.

[0086] Therefore, by attaching sheet 600 to the gap formed between circuit board 500 and top surface portion 401, it is possible to prevent infiltrating foreign matter from adhering to circuit board 500. Sheet 600 can be attached to the gap between circuit board 500 and top surface portion 401 later, as necessary. In order to ensure a space for attaching sheet 600, top surface portion 401 (second flat surface portion) is formed at a position slightly higher than the plane of chassis 100. Therefore, top surface portion 401 (second flat surface portion) may be formed at a position higher than the plane of chassis 100 by the thickness of sheet 600. Note that sheet 600 can also fulfill the function of suppressing light leakage from optical members provided on circuit board 500.

[0087] 17, a plurality of protrusions 140 are provided on the lower surface 111a of the base portion 111 of the connection member 110. For example, in the example of Fig. 3, the protrusions 140 are provided at six locations on the lower surface 111a of the base portion 111. The number of protrusions 140 is not limited to six.

[0088] By providing the plurality of protrusions 140, the entire lower surface 111a of the base portion 111 of the connecting member 110 does not come into contact with the chassis 100, but the tips of the plurality of protrusions 140 of the connecting member 110 come into contact with the chassis 100. This makes it possible to reduce the contact area between the connecting member 110 and the chassis 100.

[0089] <Other> The present disclosure is not limited to the above-described embodiments, and various modifications are possible within the scope of the claims. Embodiments obtained by appropriately combining the technical means disclosed in different embodiments are also included in the technical scope of the present invention. Furthermore, new technical features can be formed by combining the technical means disclosed in each embodiment. [Explanation of symbols]

[0090] 100 chassis, 110 connection member, 111 base portion, 111A first opening, 112 engagement arm portion, 140 protrusion, 150 first convex portion, 200 rear cabinet, 210 engagement protrusion portion, 211 base portion, 212 head portion, 400 fixing portion, 401 upper surface portion, 402 second opening portion, 403 abutment portion, 410 holding portion, 410A rising portion, 410B first flat portion, 420 recessed portion, 500 circuit board, 600 sheet

Claims

1. a display panel for displaying; a chassis provided on the rear side of the display panel and having a circuit board attached thereto; a rear cabinet covering the chassis; a connecting member attached to the rear cabinet side of the chassis and connecting the rear cabinet and the chassis; a holding portion that slidably holds the connection member; A display device comprising:

2. the connecting member has a first protrusion on a surface that is attached to the chassis, the chassis has a recess into which the first protrusion fits when the connection member is attached to the chassis, The display device according to claim 1 , wherein a length of the recess in a first direction in which the connecting member slides is longer than a length of the first protrusion in the first direction.

3. the connecting member has a pair of engaging ribs that engage with a protrusion that protrudes from the rear cabinet toward the chassis, 2. The display device according to claim 1, wherein the chassis is provided with an abutment portion at a position opposite to the tip of the protrusion that engages with the engagement rib.

4. the connecting member has a base portion attached to the chassis and a pair of engaging ribs that engage with a protrusion protruding from the rear cabinet toward the chassis, 3. The display device according to claim 2, wherein the size of the side of the base portion on which the first protrusion is provided, across the pair of engagement ribs, is larger than the size of the side on which the first protrusion is not provided.

5. The display device according to claim 2 , wherein a lower portion of the tip of each of the first projections is chamfered.

6. a surface of the connection member facing the chassis is formed with a plurality of second protrusions; The display device according to claim 1 .

7. 2. The display device according to claim 1, wherein the holding portion has a first planar portion that protrudes toward the rear cabinet and restricts movement of the connection member toward the rear cabinet, and a second planar portion that protrudes toward the rear cabinet and is located at a lower position than the first planar portion.

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