JP2012226077A - Display unit and casing attachment structure thereof - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a casing attachment structure for display units that ensures joint strength of a casing and allows the casing to be easily detached, and a display unit using the same.SOLUTION: A display unit includes casings 20 and 30, and a front casing 20 has a front engaging part 21 provided with a front pawl part 22 projecting in the side of a liquid-crystal display panel 10. A rear casing 30 has a rear engaging part 31 provided with a rear hole 36 and a slide part 33. By engaging and locking the front pawl part 22 in an engagement hole formed in the rear hole 36, the casings 20 and 30 are attached to the liquid-crystal display panel 10. The casings 20 and 30 can be detached by lifting up the rear casing 30 and sliding the front pawl part 22 by the slide part 33 in the lateral direction perpendicular to the thickness direction of the liquid-crystal display panel 10.

Description

  The present invention relates to a display device such as a liquid crystal television receiver and a housing mounting structure thereof.

  Thin display devices such as liquid crystal television receivers and plasma display panel (Plasma Display Panel; PDP) television receivers have become larger in display screen. While the size of the display screen is increasing, the user prefers a full-screen display design in which the size of the display unit is directly the size of the display screen (hereinafter sometimes referred to as “screen size”).

  The display panel constituting the display unit is sandwiched between a front case disposed on the display screen side and a rear case disposed on the back side. In order to realize full screen display, the size in the width direction of the front casing that covers the outer periphery of the display panel (hereinafter sometimes referred to as “frame width”) is as small as possible compared to the size of the display panel. Tend to be smaller. Further, the dimension in the depth direction of the housing, that is, the thickness direction of the display panel tends to be as small as possible.

  As a method for reducing the frame width of the front housing, it is conceivable to change the screw that joins the front housing and the rear housing to a screw having a smaller diameter than that of a conventionally used screw. This makes it possible to change the screw-fixing boss that needs to be formed on the front housing to a boss having a smaller diameter than the conventional one. The screw fixing boss is disposed on the outer peripheral portion of the display panel. Therefore, by reducing the diameter of the screw-fixing boss as described above, the size of the outer peripheral portion of the display panel necessary for arranging the boss is reduced, and the frame width of the front housing is reduced. It becomes possible to do.

  On the other hand, in a structure using screws with a smaller diameter than before, the number of screws is increased in order to ensure the same strength as that of the conventional case, that is, the strength of joining the front case and the rear case. There is a need. When the number of screws is increased, the number of parts increases and the manufacturing cost increases. Further, in the disassembling work for market service and material recycling, the number of screws that need to be loosened to remove the rear housing is increased, which increases the work man-hours. Furthermore, when the number of screws increases, there are problems that the number of screw portions exposed in the external portion increases, and the design of the external portion is impaired.

  Although not related to the display device, technologies related to the structure of the housing are disclosed in, for example, Patent Document 1 and Patent Document 2.

  Patent Document 1 discloses a hook attachment structure in which two members are attached and detached by attaching and detaching a hook portion and an engagement hole. The hook mounting structure disclosed in Patent Document 1 is provided with an engagement hole in order to facilitate the attachment and detachment of the hook portion and the engagement hole, and extends to the end side from the engagement hole. A first member having a bending guide portion and a hook portion having a retaining function are formed to protrude from the hook forming portion, and a push hole is provided in a portion facing the bending guide portion. A member. In the hook mounting structure disclosed in Patent Document 1, the pushing member is inserted into the pushing hole, and the pushing guide member is pushed to bend the bending guide portion, and by bending the bending guide portion, the hook forming portion is also bent. As a result, the engagement state between the hook portion and the engagement hole is released.

  Patent Document 2 discloses a case attachment structure for a front decorative plate in which an end portion of the case is inserted into a case insertion portion of the front decorative plate and the case is connected to the front decorative plate. In the case mounting structure of the front decorative plate disclosed in Patent Document 2, a plurality of fitting holes and a guide groove toward each of the fitting holes are formed on the outer wall of the end portion of the case, and correspond to the fitting holes. A plurality of claw parts are formed on the housing insertion part of the front decorative plate, and the ends of the housing are on the front until the claw parts are locked to the fitting holes by following the both ends of the claw parts with the guide grooves. It is inserted into the housing insertion part of the decorative plate. In this structure, the planar shape of the support portion of the claw portion is substantially U-shaped, and a notch portion is provided on the inner side to cover and block the guide groove while the claw portion is locked to the fitting hole. A plate is arranged inside the notch.

JP 2004-221121 (paragraphs [0025] to [0045], FIG. 1) JP-A-6-216543 (paragraphs [0012] to [0020], FIG. 1)

  In the structure disclosed in Patent Document 1 and Patent Document 2 described above, it is necessary to form a push-in hole necessary for removing the housing in the housing serving as the external portion. Therefore, the external appearance part has a dent by the hole for pushing in, and since the surface cannot be formed in a flat shape, there exists a problem that the design property of an external appearance part is impaired.

  Moreover, in order to ensure the coupling | bonding strength of a housing | casing, in the structure disclosed by patent document 1, it is necessary to enlarge the height of the hook part engaged with an engagement hole, for example. Similarly, in the structure disclosed in Patent Document 2, it is necessary to increase the height of the claw portion locked in the fitting hole. However, the height of the hook portion and the claw portion (hereinafter sometimes referred to as “engagement portion”) cannot be larger than the flexure dimension of the member in which the hole to be engaged or locked is formed. There is a problem that the coupling strength of the casing cannot be sufficiently ensured.

  In order to solve this problem, it is conceivable to increase the bending dimension of the member in which the hole is formed to increase the height of the engaging portion. However, in order to increase the bending dimension, It is necessary to form a gap corresponding to the bending dimension with the structure. When the gap corresponding to the bending dimension is formed in this way, there is a problem that the outer shape of the housing becomes larger than the internal structure.

  As a method for securing the coupling strength of the housing, it is conceivable to increase the number of locations where the engaging portions are formed. Increasing the number of locations where the engaging portions are formed has a problem in that it is difficult to remove the housing because it is necessary to push in a plurality of engaging portions when removing the housing. Further, there is a problem that the engaging portion may be damaged when the casing is removed. Also, when manufacturing the case with a mold, it is necessary to make the mold structure of the case into a slide structure, etc. to form the engaging part, so the mold structure is complicated and the mold construction period is prolonged. In addition, there is a problem that the cost of the mold increases.

  Therefore, even if the structures disclosed in Patent Literature 1 and Patent Literature 2 are applied to the housing of the display device, it is difficult to secure the coupling strength of the housing and to make the housing easily removable. .

  An object of the present invention is to provide a housing mounting structure for a display device that can secure the coupling strength of the housing and can be easily removed, and a display device using the same.

  The display device of the present invention includes a display panel having a display screen for displaying an image, and a pair of casings that expose the display screen and sandwich the display panel from both sides in the thickness direction. Each of the pair of housings has an engaging portion projecting toward the display panel, and the pair of housings. The engaging portion of the other housing includes a hole portion in which an engaging hole for locking the claw portion is formed, and the claw portion slides in a side surface direction perpendicular to the thickness direction of the display panel. And a movable sliding portion.

  A housing mounting structure of a display device according to the present invention includes a display panel having a display screen for displaying an image, and a pair of housings that expose the display screen and sandwich the display panel from both sides in the thickness direction. The pair of casings have an engaging portion for engaging with each other, and the engaging portion of one of the pair of casings is the display panel. A claw portion projecting to the side, and the engagement portion of the other housing of the pair of housings includes a hole portion in which an engagement hole for locking the claw portion is formed, and the claw portion Has a sliding portion that is slidable in a side surface direction perpendicular to the thickness direction of the display panel, and the pair of housings has the claw portion engaged with an engagement hole formed in the hole portion. It is attached to the display panel by being locked together.

  According to the display device of the present invention, the engagement portion of one of the pair of housings that sandwich the display panel has a claw portion. The engaging part of the other housing includes a hole part in which an engaging hole for engaging the claw part is formed, and a sliding part in which the claw part can slide in the side surface direction perpendicular to the thickness direction of the display panel. And have. Thus, by engaging and locking the claw portion of the engaging portion of one housing with the engaging hole formed in the hole portion of the engaging portion of the other housing, A pair of housings can be attached to the display panel while ensuring the bonding strength. Moreover, since the claw part of the engaging part of one housing | casing can be slid in a side surface direction by the sliding part of the engaging part of the other housing | casing, a claw part can be easily removed from a hole part. . Therefore, it is possible to secure the coupling strength between the pair of housings and to easily remove the housings.

  According to the housing mounting structure of the display device of the present invention, the pair of housings are engaged with each other so that the claw portion of the engaging portion of one housing is formed in the hole portion of the engaging portion of the other housing. Since it is attached to the display panel by being engaged and locked with the hole, it is possible to ensure the coupling strength between the pair of housings. Further, the engaging portion of the other casing has a sliding portion in which the claw portion is slidable in the side surface direction perpendicular to the thickness direction of the display panel, so that the claw portion is slid in the side surface direction by the sliding portion. Therefore, it can be easily removed from the hole. Therefore, it is possible to secure the coupling strength between the pair of housings and to easily remove the housings.

It is sectional drawing which shows the structure of a part of display apparatus 1 which is one Embodiment of this invention. It is a perspective view which shows the structure of the engaging part 21 of the front housing | casing 20 shown in FIG. It is a perspective view which shows the structure of the engaging part 31 of the rear surface housing | casing 30 shown in FIG. It is the disassembled perspective view which looked at the display apparatus 1 which is one Embodiment of this invention from diagonally forward. FIG. 5 is an exploded perspective view of a first housing portion 30a and a second housing portion 30b of the rear housing 30 shown in FIG. FIG. 6 is a perspective view of a part of a second housing portion 30b shown in FIG. FIG. 6 is a perspective view of a part of the second housing portion 30b shown in FIG.

  FIG. 1 is a cross-sectional view showing a configuration of a part of a display device 1 according to an embodiment of the present invention. FIG. 2 is a perspective view showing the configuration of the engaging portion 21 of the front housing 20 shown in FIG. FIG. 3 is a perspective view showing the configuration of the engaging portion 31 of the rear housing 30 shown in FIG. FIG. 4 is an exploded perspective view of the display device 1 according to the embodiment of the present invention as viewed obliquely from the front. FIG. 5 is an exploded perspective view of the first housing part 30a and the second housing part 30b of the rear housing 30 shown in FIG. 6 is a perspective view of a part of the second housing portion 30b shown in FIG. FIG. 7 is a perspective view of a part of the second housing portion 30b shown in FIG. The display device 1 of the present embodiment is a liquid crystal display device.

  As shown in FIGS. 1 and 4, the display device 1 includes a liquid crystal display panel 10 and a pair of housings, that is, a front housing 20 and a rear housing 30. In the present embodiment, the front casing 20 corresponds to one casing, and the rear casing 30 corresponds to the other casing. In the following description, the front casing 20 and the rear casing 30 may be collectively referred to as casings 20 and 30.

  The liquid crystal display panel 10 has a display screen 14 that displays an image. The display screen 14 is formed in a rectangular shape. The display device 1 is installed and used so that the short side direction of the display screen 14 matches the vertical direction and the long side direction of the display screen 14 matches the horizontal direction. In the following description, in the usage state of the display device 1, the front direction toward the display screen 14 may be referred to as the front, and the opposite direction may be referred to as the rear. Further, the long side direction of the display screen 14 may be referred to as a horizontal direction, and the short side direction may be referred to as a vertical direction. In FIG. 1, the long side direction of the display screen 14 that is the horizontal direction is a direction perpendicular to the paper surface of FIG. 1, and the short side direction of the display screen 14 that is the vertical direction is the vertical direction toward the paper surface of FIG. It is.

  The liquid crystal display panel 10 includes a liquid crystal display unit 11 having a display screen 14, a backlight device 12, and a liquid crystal display panel outer frame 13. The backlight device 12 irradiates the liquid crystal display unit 11 with light. The liquid crystal display unit 11 displays an image on the display screen 14 by controlling for each pixel whether the light emitted from the backlight device 12 is transmitted or blocked. The liquid crystal display unit 11 is formed in a rectangular plate shape. Of the surface portion on one side in the thickness direction of the liquid crystal display unit 11, a portion used for displaying an image is referred to as a display screen 14. The outer peripheral end of the surface portion on one side in the thickness direction of the liquid crystal display unit 11 is covered with a liquid crystal display panel outer frame 13.

  The shape of the liquid crystal display panel 10 is a substantially flat plate having a rectangular shape as a whole. The front casing 20 and the rear casing 30, which are a pair of casings, expose the display screen 14 and sandwich the liquid crystal display panel 10 from both sides in the thickness direction. The front housing 20 is disposed on the display screen 14 side, that is, one side in the thickness direction of the liquid crystal display panel 10, that is, on the front side of the display device 1. The rear housing 30 is disposed on the other side in the thickness direction of the liquid crystal display panel 10, that is, on the rear side opposite to the display screen 14, that is, on the rear side of the display device 1.

  The front housing 20 has a frame-shaped portion 24 formed in a rectangular frame shape, and an engaging portion 21 for engaging with the rear housing 30. The front housing 20 covers the liquid crystal display panel outer frame 13 and the liquid crystal display unit 11 in the vicinity of the inner peripheral edge thereof from one side in the thickness direction of the liquid crystal display panel 10 with the frame-shaped portion 24. The display screen 14 is a portion surrounded by the frame-like portion 24 of the front housing 20 in the surface portion on one side in the thickness direction of the liquid crystal display portion 11, in other words, the inside of the frame-like portion 24 of the front housing 20. It corresponds to the exposed part.

  The frame-like portion 24 has a flat plate portion 24a formed in a flat plate shape and inclined portions 24b and 24c inclined with respect to the flat plate portion 24a. The inclined portions 24b and 24c constitute an inner peripheral end 24b and an outer peripheral end 24c of the frame-shaped portion 24. The flat plate portion 24 a constitutes a portion excluding the inner peripheral end portion 24 b and the outer peripheral end portion 24 a of the frame-shaped portion 24. The front housing 20 is attached to the liquid crystal display panel 10 such that the flat plate portion 24 a of the frame-like portion 24 is arranged in parallel with the surface portion on one side in the thickness direction of the liquid crystal display panel 10.

  The inner peripheral end portion 24b of the frame-shaped portion 24 is formed to be inclined with respect to the flat plate portion 24a so that the thickness dimension decreases as the distance from the flat plate portion 24a increases. The outer peripheral end 24c of the frame-shaped portion 24 is formed to have the same thickness as the flat plate portion 24a, and is bent from the flat plate portion 24a toward the rear side, that is, toward the other side in the thickness direction of the liquid crystal display panel 10. Is done. The front housing 20 is coupled to the rear housing 30 so as to be in contact with a main body portion 34 described later of the rear housing 30 by the peripheral portion of the outer peripheral end 24 c of the frame-shaped portion 24.

  An engaging portion (hereinafter also referred to as a “front engaging portion”) 21 of the front housing 20 is in a use state of the display device 1 among four sides constituting the frame-like portion 24 of the front housing 20. , And is formed on a side located on the upper side of the display screen 14 (hereinafter referred to as “upper side”). The use state of the display device 1 is a state in which the display device 1 is installed so that the short side direction of the display screen 14 matches the vertical direction and the long side direction of the display screen 14 matches the horizontal direction as described above. It is.

  More specifically, the front surface engaging portion 21 is formed at the peripheral edge portion of the outer peripheral end portion 24 c in the upper side portion of the frame-like portion 24. In the state where the front casing 20 is attached to the liquid crystal display panel 10, the front engaging portion 21 is formed on both sides of the liquid crystal display panel 10 in the thickness direction from the peripheral portion of the outer peripheral end portion 24 c in the upper side portion of the frame-like portion 24. It is formed as a convex part protruding to the side surface part side perpendicular to the surface part. That is, the front engaging portion 21 is formed to protrude toward the side surface portion of the liquid crystal display panel 10.

  As shown in FIGS. 1 and 2, the front surface engaging portion 21 has a claw portion (hereinafter also referred to as “front surface claw portion”) 22. More specifically, the front surface engaging portion 21 includes a plurality of front surface claw portions 22 formed at intervals and a connection portion that connects the plurality of front surface claw portions 22 (hereinafter also referred to as “front surface connection portion”). 23. The front claw portion 22 is formed to protrude toward the liquid crystal display panel 10 in a state where the front casing 20 is attached to the liquid crystal display panel 10. More specifically, the front claw portion 22 and the front connection portion 23 are formed from the peripheral portion of the outer peripheral end portion 24 c in the upper side portion of the frame-like portion 24 in a state where the front case 20 is attached to the liquid crystal display panel 10. Is also formed to protrude toward the side surface of the liquid crystal display panel 10.

  The rear housing 30 has a main body portion 34 formed in a substantially rectangular plate shape, and an engaging portion 31 for engaging with the front housing 20. The main body portion 34 is a plate-like portion that covers the liquid crystal display panel 10 of the rear housing 30. The rear housing 30 covers the liquid crystal display panel 10 from the other side in the thickness direction of the liquid crystal display panel 10 on the back side, that is, the rear side, by the main body portion 34.

  The main body portion 34 of the rear housing 30 has a rectangular frame-shaped portion that constitutes an outer peripheral end portion of the main body portion 34, and a concave portion 34 e inside the rectangular frame-shaped portion. The concave portion 34e is surrounded by a rectangular frame portion. The concave portion 34e functions as a housing portion that houses a member constituting the backlight device 12 of the liquid crystal display panel 10.

  An engagement portion (hereinafter also referred to as “rear surface engagement portion”) 31 of the rear housing 30 is a display device 1 among four sides constituting a rectangular frame-shaped portion that is an outer peripheral end portion of the main body portion 34. In the use state, the upper side portion which is the side portion located on the upper side toward the display screen 14 is formed.

  In the present embodiment, as shown in FIG. 4, five rear surface engaging portions 31 are formed. The five rear surface engaging portions 31 are composed of the upper side portion of the rectangular frame-shaped portion of the main body portion 34, the core portion 35 that is a central portion between both end portions of the upper side portion, and both ends of the upper side portion. Of the portion between the portion and the core portion 35, the portion closer to the core portion 35 is formed. The front engaging portion 21 is formed in a portion corresponding to a portion where the rear engaging portion 31 is formed in the upper side portion of the front casing 20.

  FIG. 1 shows a virtual one perpendicular to the display screen 14 at the position of the rear surface engaging portion 31 formed on the core portion 35 of the rear surface housing 30 and the front surface engaging portion 21 engaged with the rear surface engaging portion 31. This corresponds to a cross-sectional view of the display device 1 in a plane. FIG. 3 corresponds to an enlarged view of section S of FIG. FIG. 4 is a perspective view of the rear housing 30 as viewed from the left diagonal front, while FIG. 3 is a perspective view of the rear housing 30 as viewed from the right diagonal front. Although FIG. 3 shows the rear surface engaging portion 31 formed at one end portion of the upper side portion of the main body portion of the rear surface housing 30, the other rear surface engaging portions 31 have the same configuration.

  As shown in FIGS. 5 to 7, the rear housing 30 includes a first housing portion 30 a including one end portion of the upper side portion and an upper side portion in the core portion 35 on the upper side portion of the rectangular frame-shaped portion of the main body portion 34. The second housing portion 30b including the other end of the second housing portion 30b can be divided. The first housing part 30a and the second housing part 30b are combined to form the rear housing 30. When the display device 1 is in use, the left portion from the rear side of the display device 1 toward the rear housing 30 is the first housing portion 30a, and the right portion is the second housing portion 30b. The first housing portion 30 a includes a rear surface engaging portion 31 of the core portion 35.

  As shown in FIGS. 5 to 7, a portion excluding the core portion 35 (hereinafter sometimes referred to as “core side portion”) in the upper side portion of the rectangular frame-shaped portion of the main body portion 34 is formed in a flat plate shape. A flat plate portion 34d and a peripheral edge portion 34c perpendicular to the flat plate portion 34d. The flat plate portion 34d continues to the concave portion 34e. The peripheral portion 34 c is connected to the flat plate portion 34 d and constitutes the peripheral portion of the upper side portion of the rectangular frame portion that is the outer peripheral end portion of the main body portion 34.

  As shown in FIG. 1 and FIGS. 5 to 7, the core portion 35 of the upper side portion of the rectangular frame-shaped portion of the main body portion 34 is connected to the flat plate portion 34 d on the side portion of the core, and is behind the flat plate portion 34 a. A projecting portion 34a that projects from the side of the core, a peripheral portion 34c that extends from the side of the core, and a connecting portion 34b that connects the projecting portion 34a and the peripheral portion 34c. The protruding portion 34a has a flat plate-like portion parallel to the flat plate portion 34d on the core side portion, and a curved portion connecting the flat plate portion and the flat plate portion 34d on the core side portion. The connecting portion 34b is formed to be inclined with respect to the flat plate-like portion of the protruding portion 34a.

  The rear housing 30 is arranged such that the flat plate portion of the protruding portion 34 a of the core portion 35 and the flat plate portion 34 d of the core side portion are parallel to the surface portion on the other side in the thickness direction of the liquid crystal display panel 10. And attached to the liquid crystal display panel 10. The rear housing 30 is coupled to the front housing 20 so as to be in contact with the front housing 20 by the peripheral portion 34c of the upper side portion of the rectangular frame-shaped portion of the main body portion 34. Of the rectangular frame-shaped portion of the main body portion 34 of the rear case 30, the upper peripheral portion 34 c is in contact with the outer peripheral end 24 c of the front case 20 in the state where the liquid crystal display panel 10 is attached. Yes.

  The rear surface engaging portion 31 is formed on the peripheral edge portion 34 c of the upper side portion of the rectangular frame-shaped portion of the rear surface housing 30. The rear surface engaging portion 31 is attached to the liquid crystal display panel 10, and the front casing 20 that is one side in the thickness direction of the liquid crystal display panel 10 from the peripheral portion 34 c of the upper side portion of the rectangular frame-shaped portion of the main body portion 34. Side and the side surface portion side of the liquid crystal display panel 10.

  The rear engagement portion 31 is formed by a mold slide structure in a downward direction that is the vertical direction of the flat portion of the rear housing 30. Therefore, the rear surface engaging portion 31 can be formed on the appearance of the rear surface housing 30 without forming an opening in the front-rear direction of the rear surface housing 30.

  As shown in FIG. 3, the rear surface engaging portion 31 may have a hole portion (hereinafter sometimes referred to as “rear hole portion”) 32, a sliding portion 33, and a connecting portion (hereinafter referred to as “rear surface connecting portion”). ) 36 and a locking portion 37. The sliding portion 33 and the locking portion 37 are formed to protrude from the main body portion 34 of the rear housing 30 to the front housing 20 side, which is one side in the thickness direction of the liquid crystal display panel 10. Specifically, the sliding portion 33 and the locking portion 37 are formed to extend forward from the main body portion 34 of the rear housing 30. In other words, the sliding portion 33 and the locking portion 37 are located on the front side that is one side in the thickness direction of the liquid crystal display panel 10 from the main body portion 34 of the rear case 30 in a state where the rear case 30 is attached to the liquid crystal display panel 10. It is formed extending to the housing 20 side.

  The rear surface connecting portion 36 includes a connecting portion that connects the sliding portion 33 and the locking portion 37, and a protruding portion 36 b that protrudes with the connecting portion as a base end portion. The connecting portion is formed to extend in a direction perpendicular to the extending direction of the sliding portion 33 and the locking portion 37, that is, in the lateral direction that is the long side direction of the rear housing 30.

  The protruding portion 36 b is formed to protrude from the connecting portion to the main body portion 34 side, specifically, to the peripheral edge portion 34 c side of the upper side portion of the rectangular frame portion of the main body portion 34. That is, the protruding portion 36 b is formed to protrude to the rear side that is the other side in the thickness direction of the liquid crystal display panel 10 in a state where the rear housing 30 is attached to the liquid crystal display panel 10. In other words, the protruding portion 36b is a rear side where the connecting portion is a base end portion and the free end portion is the other side in the thickness direction of the liquid crystal display panel 10 in a state where the rear housing 30 is attached to the liquid crystal display panel 10. It is provided so that it may be located in. The protruding portion 36b has a lateral dimension such that a gap is formed between the protruding portion 36b and the sliding portion 33 and between the protruding portion 36b and the locking portion 37. It is formed to be slightly smaller than the dimension in the horizontal direction.

  The sliding part 33 and the locking part 37 are formed in a plate shape having a substantially triangular cross section when viewed from the lateral direction. The sliding portion 33 and the locking portion 37 are arranged so that a virtual one plane including one side of a substantially triangular shape (hereinafter sometimes referred to as “first virtual plane”) is parallel to the thickness direction of the rear housing 30. In other words, the rear casing 30 is provided so as to be perpendicular to the surface portion on one side in the thickness direction of the flat plate portion 34d.

  The protruding portion 36b of the rear connection portion 36 is formed in a substantially flat plate shape. The protruding portion 36b is provided so as to be inclined with respect to the first virtual plane. In the protruding portion 36b, the angle formed by the protruding portion 36b and the first virtual plane is larger than the angle formed by the sliding portion 33 and the first virtual plane and the angle formed by the locking portion 37 and the first virtual plane. Formed to be. Further, the protruding portion 36b has a height from the first virtual plane of the free end portion of the protruding portion 36b higher than the height from the first virtual plane of the portion facing the protruding portion 36b of the sliding portion 33 and the locking portion 37. Is also formed to be large.

  The rear hole portion 32 is formed by a part of the peripheral edge portion 34 c of the main body portion 34 of the rear housing 30, the sliding portion 33, the locking portion 37, and the rear surface connecting portion 36. That is, the wall portion of the engagement hole is configured by a part of the peripheral edge portion 34 c of the main body portion 34 of the rear housing 30, the sliding portion 33, the locking portion 37, and the rear surface coupling portion 36. The rear hole portion 32 defines an engagement hole with which the front claw portion 22 is engaged. The rear hole portion 32 constitutes a wall portion of the engagement hole. In other words, the rear hole portion 32 is formed with an engagement hole with which the front claw portion 22 is engaged. Since the rear surface coupling portion 36 has the protruding portion 36b as described above, the engagement hole of the rear surface hole portion 32 is formed in a C shape when viewed from the vertical direction, that is, from above the rear surface housing 30.

  The front claw portion 22 of the front engagement portion 21 is engaged with the rear hole portion 32 of the rear engagement portion 31. The front engaging portion 21 has the front claw portion 22 engaged with the rear hole portion 32 in a state where the rear casing 30 is disposed at a position where the first virtual plane is parallel to the thickness direction of the liquid crystal display panel 10. In addition, the front connecting portion 23 is configured to be pressed against the protruding portion 36b of the rear connecting portion 36. When the front surface connecting portion 23 is pressed against the protruding portion 36 b of the rear surface connecting portion 36, the front surface engaging portion 21 is locked to the rear surface engaging portion 31. In this way, the front casing 20 and the rear casing 30 are attached to the liquid crystal display panel 10.

  The front engaging portion 31 is formed such that a height H that is a protruding amount toward the side surface portion of the liquid crystal display panel 10 is larger than a deflection dimension of the rear engaging portion 31. Here, the “deflection dimension of the rear surface engaging portion 31” refers to the maximum amount of deformation that the rear surface engaging portion 31 can deform. As described above, in the present embodiment, the height H of the front surface engaging portion 21 is set to be larger than the deflection size of the rear surface engaging portion 31, and the front surface engaging portion 21 and the rear surface engaging portion 31 are formed. Engaged. As a result, it is possible to ensure a coupling strength equivalent to that in the case where the front casing 20 and the rear casing 30 are coupled with each other without increasing the number of positions where the front casing 20 and the rear casing 30 are formed. Can do.

  The sliding portion 33 is slidable in the lateral direction perpendicular to the thickness direction of the liquid crystal display panel 10 in a state where the pressing of the front coupling portion 23 by the protruding portion 36b of the rear coupling portion 36 is released. Configured. In the present embodiment, the side surface direction is the horizontal direction, that is, the long side direction of the liquid crystal display panel 10.

  The locking portion 37 is provided opposite to the sliding portion 33 on the side opposite to the sliding portion 33 in the lateral direction that is the side surface direction. The locking portion 37 is configured such that the front claw portion 22 cannot slide in the side surface direction, and locks the front claw portion 22. That is, the front claw portion 22 can slide in the direction indicated by the arrow 38 in FIG. 3, which is the direction from the locking portion 37 toward the sliding portion 33, and the sliding portion 33 moves to the locking portion 37. It is configured not to be able to slide in the direction toward which it is directed, that is, in the direction opposite to the arrow 38.

  When the casings 20 and 30 are removed from the liquid crystal display panel 10, first, a portion where the front casing 20 and the rear casing 30 are engaged, that is, a contact portion between the front engaging portion 21 and the rear engaging portion 31. The rear housing 30 is lifted by a rotational motion with fulcrum as the fulcrum. That is, the rear housing 30 is configured to be capable of angular displacement movement. When the rear housing 30 is lifted and angularly displaced, the pressing of the front connecting portion 23 by the protruding portion 36b of the rear connecting portion 36 is released. In this way, the rear case 30 is further angularly displaced in a state where the pressure is released, and the front end portion 36 a of the rear connection portion 36 of the rear engagement portion 31 is connected to the front case 20 and the rear case 30. When the rear casing 30 is lifted until it contacts the liquid crystal display panel 10 inside, the front casing is arranged in the direction indicated by the arrow 38 in FIG. 20 front claw portions 22 are slid.

  In other words, when the angle formed between the rear surface connecting portion 36 and the upper side portion of the liquid crystal display panel 10 is an angle at which the front end portion 36 a of the rear surface connecting portion 36 contacts the liquid crystal display panel 10, the engaging portion of the rear surface engaging portion 31. The front claw part 22 is slid sideways in the direction of the arrow 38 from 37 to the sliding part 33.

  By doing so, the front claw portion 22 of the front engagement portion 21 can be easily removed from the rear hole portion 32 of the rear engagement portion 31, so that the engagement between the front case 20 and the rear case 30 is possible. Can be easily resolved.

  Therefore, in the present embodiment, it is possible to secure the coupling strength between the front housing 20 and the rear housing 30 equivalent to the case of coupling with screws, and the housings 20 and 30 can be easily removed.

  Further, in the present embodiment, it is not necessary to form a boss for coupling with a screw on the outer peripheral portion of the liquid crystal display panel outer frame 13. Further, it is not necessary to form a push-in hole that is necessary when the casings 20 and 30 are removed in the casings 20 and 30 that are appearance portions. Therefore, the width dimension W of the frame-like portion 24 of the front housing 20 can be reduced without impairing the design of the appearance portion.

  Further, in the present embodiment, the sliding portion 33 of the rear housing 30 has a concave curved surface at the portion that contacts the front claw portion 22. As a result, when the rear housing 30 is lifted to remove the housings 20 and 30 from the liquid crystal display panel 10, the front claw portion 22 that is in contact with the sliding portion 33 is smoothly moved in the lateral direction 38, which is the lateral direction. Can be slid. Therefore, it can prevent that the front nail | claw part 22 will be damaged.

  In the present embodiment described above, the rear surface engaging portion 31 is formed integrally with the main body portion 34 of the rear surface housing 30, but is formed separately from the main body portion 34 and bonded to the main body portion 34. It may be fixed by. In this case, the rear housing 30 is manufactured by separately manufacturing a part having the same shape as the rear engagement portion 31 shown in FIG. 3 and fixing it to the housing having the same shape as the main body portion 34 by adhesion. In this case as well, the same effect as this embodiment can be obtained.

  Further, when the rear surface engaging portion 31 is manufactured as a separate part and bonded to a housing corresponding to the main body portion 34 to manufacture the rear surface housing 30, the rear surface engaging portion 31 is bonded to the main body portion 34 before bonding. Since the shape of the corresponding housing can be simplified, it is possible to obtain the effect that the mold structure of the large housing can be simplified in addition to the effect of the above-described embodiment. .

  Further, in the present embodiment, the front surface engaging portion 21 having the front surface claw portion 22 and the front surface connecting portion 23 is provided in the front case 20, and the rear surface engaging portion 31 having the rear surface hole portion 32, the sliding portion 33, and the like is provided on the rear surface. The housing 30 is provided. However, the present invention is not limited thereto, and an engaging portion having the same configuration as that of the front surface engaging portion 21 of the present embodiment is provided in the rear housing 30, and the engaging portion having the same configuration as that of the rear surface engaging portion 31 of the present embodiment. May be provided in the front casing 20.

  From the viewpoint of workability, the engaging portion 31 having the hole 32 and the sliding portion 33 is provided in the rear case 30 and the engaging portion 21 having the claw portion 22 is provided in the front case as in the present embodiment. It is preferable that the body 20 is provided. Since the rear housing 30 has a substantially plate shape, the strength is higher than that of the frame-shaped front housing 20, and the rear housing 30 is not easily damaged even if various processes are performed. Therefore, it is preferable to provide the rear housing 30 with an engaging portion 31 having a hole 32 and a sliding portion 33, which are more complicated engaging portions.

  In the present embodiment, the display device 1 is a liquid crystal display device, but the housing mounting structure in the present embodiment is also applicable to display devices other than the liquid crystal display device. For example, when the display device is a PDP display device, the cases 20 and 30 are attached to the PDP instead of the liquid crystal display panel 10 by the case attachment structure in the present embodiment.

  DESCRIPTION OF SYMBOLS 1 Display apparatus, 10 Liquid crystal display panel, 11 Liquid crystal display part, 12 Backlight apparatus, 13 Liquid crystal display panel outer frame, 14 Display screen, 20 Front housing | casing, 21 Front engaging part, 22 Front claw part, 23 Front connection part , 24 Frame-shaped portion, 30 Rear housing, 31 Rear surface engaging portion, 32 Rear surface hole portion, 33 Sliding portion, 34 Main body portion, 35 Core portion, 36 Rear surface connecting portion, 37 Locking portion.

Claims (5)

A display panel having a display screen for displaying an image;
A pair of casings that expose the display screen and sandwich the display panel from both sides in the thickness direction;
The pair of housings have engaging portions for engaging with each other;
Of the pair of housings, the engaging portion of one housing has a claw portion protruding toward the display panel,
Of the pair of housings, the engaging portion of the other housing is
A hole portion in which an engagement hole with which the claw portion is engaged is formed;
The display device characterized in that the claw portion has a sliding portion that can slide in a side surface direction perpendicular to the thickness direction of the display panel. The sliding portion is formed to project from the main body portion covering the display panel of the other casing to one side in the thickness direction of the display panel,
The engaging portion of the other casing is
A locking portion that is provided on the opposite side of the sliding portion with respect to the side surface direction so as to face the sliding portion, and locks the claw portion,
A connecting portion that connects the locking portion and the sliding portion;
The display device according to claim 1, wherein the hole portion is formed by the main body portion, the locking portion, the sliding portion, and the connecting portion.   The display device according to claim 1, wherein a portion of the sliding portion that contacts the claw portion is formed in a concave curved surface shape.   The engagement portion of the other housing is formed separately from a main body portion that covers the display panel of the other housing, and is fixed to the main body portion by bonding. 4. The display device according to any one of 3. A housing mounting structure for a display device, comprising: a display panel having a display screen for displaying an image; and a pair of housings that expose the display screen and sandwich the display panel from both sides in the thickness direction,
The pair of housings have engaging portions for engaging with each other;
Of the pair of housings, the engaging portion of one housing has a claw portion protruding toward the display panel,
Of the pair of housings, the engaging portion of the other housing is
A hole portion in which an engagement hole with which the claw portion is engaged is formed;
The claw portion has a sliding portion slidable in a side surface direction perpendicular to the thickness direction of the display panel;
The pair of casings are attached to the display panel by the claw portions being engaged and locked with engaging holes formed in the hole portions. Mounting structure.

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