JP2009042537A - Thin display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce a frame of a liquid crystal television set and to simplify a process of attaching a cabinet. <P>SOLUTION: A front cabinet 5 is disposed in the front side of a liquid crystal panel backlight section 21. The front cabinet 5 is provided with pawls 27 on its outer circumference edge, the pawl having a pawl hook 27a extended toward the liquid crystal panel backlight section 21. The lower face of the pawl hook 27a is in contact with an upper face of a bezel 55, and the top end of the pawl hook 27a has a hook portion to be hooked and locked with the end portion on the back face side of the bezel 55. Further, a protrusion portion 27c extended in the same direction as the pawl hook 27a is formed above the pawl hook 27a, and the tip of a rear cabinet 11 is inserted into a gap formed by the upper face of the pawl hook 27a and the lower face of the protrusion portion 27c. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a thin display device such as a liquid crystal television device, and more particularly to an attachment structure when a front cabinet is attached to a backlight device.

  2. Description of the Related Art A thin display device such as a liquid crystal television has a main body provided with a display panel having a display surface on the front side and a backlight portion arranged on the rear side of the display panel, and covers the front side on the main body. And a rear cabinet attached so as to cover the rear side of the backlight unit (see, for example, Patent Document 1). A mounting flange is provided on the outer periphery of the backlight portion, and is overlapped with the display panel and fastened to the front cabinet by a fixing screw.

JP 2006-235425 A

  In the structure described in Patent Document 1, as shown in FIG. 4 of the same document, a fixing portion is provided on the outer side of the bezel that forms the outer edge of the backlight device. In this way, since the front cabinet fastening boss is arranged outside the outer edge of the backlight device, the protruding area from the end of the panel is increased by that amount, and this part is covered with the front cabinet. Therefore, there is a problem that the frame is widened and hinders narrowing of the frame. That is, the structure in which the boss is provided and screwed to the front cabinet requires a space for arranging the boss, and therefore, narrowing the frame is hindered.

  In addition, it is possible to improve production efficiency by installing the front cabinet with the panel upright, but for a liquid crystal television that has been increasing in size in recent years, the front cabinet is attached while supporting the main unit by one operator. There was a problem that it was difficult to do.

  An object of the present invention is to narrow the frame of a liquid crystal television and simplify the process of attaching a front cabinet.

  According to an aspect of the present invention, a display panel, a backlight unit that is disposed on the back side of the display panel and has a fixing unit that fixes the display panel, and the display panel side of the outer peripheral edge of the backlight unit A front cabinet that forms a frame, and the backlight portion has a locking portion that locks the front cabinet on the inner side of the outer end thereof, and the front cabinet has the engagement portion. A claw hook having a shape that engages with a locking portion, a base portion that extends along the side surface of the outer shape portion of the backlight portion, and a shape that is provided at the tip of the base portion and hooks on the back surface of the outer shape portion And a claw part fixed to the outer shape part of the backlight part.

  As a result, the front cabinet for fixing the hook by hooking the claw hook on the rear side end of the backlight outer shape by sliding the claw portion on the outer side surface while aligning the locking portion and the locked portion. Can be fixed to the light section.

  In addition, a display panel, a backlight unit disposed on the back side of the display panel and having a fixing unit for fixing the display panel, and a frame disposed on the display panel side of the outer peripheral edge of the backlight unit are formed. A front cabinet, and the backlight portion has a through-hole for passing a fixing screw for fixing the front cabinet inside the outer end portion, and the front cabinet is fixed A boss portion for receiving a screw, a base portion having a shape extending along a side surface of the outer shape portion of the backlight portion, and a claw hook portion having a shape provided at the tip of the base portion and hooked on the back surface of the outer shape portion. There is provided a thin display device having a claw portion fixed to the outer shape portion of the backlight portion.

  As a result, the front cabinet is fixed to the backlight portion by sliding the claw portion on the outer side surface and hooking the claw hook on the rear side end portion of the backlight outer shape, and the boss portion and the fixing screw are used. Can be fixed. In addition, it is preferable that the said to-be-latched part and the said nail | claw part are provided in the position which differs along the outer periphery of the said front cabinet. In the state where the front cabinet is temporarily fixed to the backlight portion by the claw portion, it is preferable that the locking portion and the locked portion are disposed at a position where they are engaged.

  Further, the front cabinet may include a fixing portion that is provided outside the claw portion and fixes the rear cabinet disposed on the back side of the backlight portion. Thereby, when fixing a front cabinet and a backlight part, a front cabinet and a rear cabinet can be fixed.

  It is preferable that a decorative cover for covering a hole formed on the display panel side in the mold structure is provided on the front cabinet in association with the provision of the claw portion on the front cabinet.

  According to another aspect of the present invention, in the assembling method of the thin display device described above, the locking portion and the locked portion are engaged in a state where the backlight portion is erected and fixed. Disposing the front cabinet at a position to be engaged, bringing the engaged front cabinet close to the backlight portion, and sliding the claw portion on the outer side surface to slide the claw hook into the outer shape of the backlight. And a step of hooking and fixing to the rear side end of the assembly. Furthermore, it is preferable to have the step which fixes the said front cabinet and the said backlight part with the said latching | locking part and the said to-be-latched part.

  According to the present invention, since the fixing portion of the front cabinet is provided inside the bezel that forms the outer edge of the backlight device, the frame can be narrowed. Furthermore, by using the claw fixing, it is possible to reduce the screw bosses of the front cabinet. By fixing (provisionally) the front cabinet to the panel with the claws, other workers can work alone without supporting from behind the thin display device with the display panel upright.

  In the present specification, the outer edge of the backlight portion refers to the outermost peripheral portion of the backlight portion in the portion constituting the bezel that is a holding frame body that holds the peripheral edge portion of the liquid crystal display panel. In general, the shorter the length from the outer edge to the fixed part of the front cabinet in the outward direction, the narrower the frame.

  Hereinafter, a thin display device according to an embodiment of the present invention will be described with reference to the drawings, taking a liquid crystal television receiver as an example. FIG. 1 is an overall view of a liquid crystal television receiver according to a first embodiment of the present invention, as seen from the front. As shown in FIG. 1, the liquid crystal television receiver A includes a display unit body 1 and a stand 3 that supports the display unit body 1, and the display unit body 1 includes a display screen formed by the liquid crystal panel 7. The front cabinet part 5 which covers the outer peripheral part and covers the liquid crystal panel 7 is provided. The front cabinet 5 forms a frame and has an opening in a portion excluding the outer peripheral portion. This opening allows the user to see the display screen.

  FIG. 2 is a view of the liquid crystal television receiver as viewed from the back. The back side is covered with a rear cabinet part 11 provided with an exhaust part 17. FIG. 3 shows the back surface of the backlight main body 21 from which the rear cabinet 11 is removed. As shown in FIG. 3, the back surface 23 of the substantially rectangular parallelepiped backlight main body 21 that accommodates a fluorescent lamp or the like and emits light toward the front is disposed at positions from P1 to P6, for example. The claw portion described later can be hooked. A groove 28 is formed in the vicinity of the outer peripheral end (outer edge), and a through hole 32 constituting a screw hole is formed in this portion.

  FIG. 4 is a diagram illustrating a detailed configuration example of the front cabinet section 5. As apparent from the correspondence with the main body 21 shown in FIG. 3, the outer peripheral edge 5 a is provided at a position corresponding to the groove 28. When the main body 21 and the front cabinet section 5 are aligned, a fixing boss 31a formed at a position that matches the through hole 32 provided in the main body 21 is provided. Further, claw portions (claw hook portions) 27a and 27b are provided at positions different from the fixing boss portion 31a in the outer peripheral direction. The fixing boss 31 a is locked (engaged) in the through hole 32. That is, the locking part and the locked part are formed.

  FIG. 5 is a cross-sectional view of the front cabinet fixing boss, for example, a cross-sectional structure cut in the vertical direction along the position P2 in FIG. As shown in FIG. 5, the liquid crystal panel 7 is disposed and fixed on the front surface of the liquid crystal backlight unit 21. A front cabinet portion 5 that forms a so-called frame is disposed at a position that covers the outer peripheral portion of the liquid crystal panel 7 and the outer end portion of the backlight portion 21 from the front surface. The liquid crystal backlight unit 21 and the front cabinet unit 5 are fixed by a fixing screw 31 and a fixing boss 31a. Furthermore, a front cover 41 that also serves as a decoration is affixed to the front cabinet portion 5 at a position covering the fixing structure, for example, with a double-sided tape. The detailed structure of this part will be described with reference to FIG. 6A is an enlarged view of the upper part of FIG. 5, and FIG. 6B is an enlarged view of the lower part of FIG. As shown in FIG. 6A, a fixing boss 31a formed on the front cabinet 5 is provided in the upper part on the inner side in the center direction of the display surface than the bezel part 21a that forms the outer shape of the backlight part 21 as shown in FIG. Thus, the front cabinet 5 and the backlight portion 21 are fixed to form a fixed portion. A front cover 41 that also serves as a decoration is provided on the front surface of the fixing portion, and the tip of the fixing screw 31 formed on the fixing boss portion 31a is hidden to prevent it from being seen by the user. Further, by forming a pattern on the front side of the front cover 41, it is possible to give a high-class feeling to the product viewed from the front. The liquid crystal panel 7 is indirectly sandwiched between the back surface of the front cabinet 5 and the front surface of the backlight unit 21 inside the fixed portion. Therefore, the frame can be narrowed compared to the conventional structure in which the fixing portion is formed outside the bezel portion 21a forming the outer shape of the backlight portion 21 in the center direction of the display surface.

  On the other hand, as shown in FIG. 6 (B), the lower cabinet is also formed in the front cabinet 5 at the inner side in the center direction of the display surface than the bezel portion 21b that forms the outer shape of the backlight unit 21 at the lower portion. The fixing boss 31b is provided so that the front cabinet 5 and the backlight portion 21 are fixed to form a fixing portion. The liquid crystal panel 7 is indirectly sandwiched between the back surface of the front cabinet 5 and the front surface of the backlight unit 21 inside the fixed portion. Therefore, the frame can be narrowed as compared with the conventional structure in which the fixing portion is formed outside the bezel portion 21b forming the outer shape of the backlight portion 21 in the center direction of the display surface. The front cover 41 and the like have the same effect as the upper case.

  Next, the detailed structure of the claw hook portion will be described. FIG. 7 is a diagram showing a cross section of the structure cut in the vertical direction at the position P1 in FIG. As shown in FIG. 7, the liquid crystal panel 7 is disposed on the front side of the backlight unit 21, and the front cabinet 5 is disposed on the outer peripheral edge of the backlight unit 21 and the liquid crystal panel 7. A claw part 27 having a claw hook 27a protruding toward the backlight part 21 is provided in the front cabinet 5 here. The front cabinet 5 and the backlight unit 21 are temporarily fixed by hooking the claw hooks 27a on the outer shape of the backlight unit. More specifically, the claw portion 27 includes a base portion having a shape extending along the side surface of the outer shape portion of the backlight portion, and a claw hook portion having a shape that is provided at the tip of the base portion and hooks on the back surface of the outer shape portion of the backlight portion. 27a. On the other hand, the rear cabinet 11 is disposed on the back surface of the backlight unit 21.

  Further, the front cabinet 5 is provided with a rear cabinet fixing portion that sandwiches and fixes the outer peripheral end of the rear cabinet on the outer side of the claw hook 27. The cabinet fixing part will be described later.

  FIG. 8 is an enlarged cross-sectional view of the upper part (FIG. 8A) and the lower part (FIG. 8B) of FIG. FIG. 9 is an exploded view of FIG. As shown in FIGS. 8A and 9A, a diffusion plate 8 and a liquid crystal panel 7 are provided on the front side of the liquid crystal panel backlight unit 21 in the upper part. The liquid crystal panel backlight unit 21 has a lamp such as a fluorescent lamp disposed therein, and a backlight reflector 45 that reflects light from the light source is provided on the back side. A reinforcing member 58 is provided on the outer peripheral side. A panel holder 71 is attached to the reinforcing member 58 on the surface side, and a bezel 55 that forms an outer peripheral end is attached. A front cabinet 5 is disposed on the front side of the liquid crystal panel backlight unit 21. The front cabinet 5 is provided with a claw hook 27a extending toward the liquid crystal panel backlight unit 21 in the vicinity of the outer peripheral end thereof. The lower surface of the claw hook 27a is in contact with the upper surface of the bezel 55, and a hook portion that hooks and engages with the end portion on the back side of the bezel 55 is provided at the tip of the claw hook 27a. Is formed. Further, a protruding portion 27 c extending in the same direction as the claw hook 27 a and extending along the outer peripheral end portion of the front cabinet 5 is formed above the claw hook 27 a. The protrusion 27c is formed continuously or intermittently in the outer peripheral direction of the front cabinet. The front end portion of the rear cabinet 11 is inserted into a gap formed by the upper surface of the claw hook 27a and the lower surface of the protruding portion 27c, and the front cabinet 5 and the rear cabinet 11 are fixed.

  The liquid crystal panel 7 is sandwiched between the panel holder 71 and a portion bent from the bezel portion 55 that forms the outer shape of the backlight portion to the front side. The lower end of the front surface of the front cabinet 5 is bent to the back side, and is held in contact with the tip of the bent portion.

  As shown in FIGS. 8B and 9B, the lower part has substantially the same configuration as the upper part. That is, the upper surface of the claw hook 27b provided on the claw portion 27 is in contact with the lower surface of the bezel 53 formed on the lower surface of the backlight device, and further, the front end portion of the claw hook 27b is on the back side of the bezel 53. A hook (hook) portion is formed to be hooked and locked to the end portion. Further, the lower end portion of the rear cabinet 11 is locked and fixed below the claw hook 27b.

  Note that the front cover 41 covers the holes 51 a and 51 b formed in the front cabinet 5 in both the upper and lower parts. The front cover 41 is affixed to the front cabinet 5 with a double-sided tape 61, for example. As shown in FIG. 10, the hole 51b (51a) is inevitably formed when the claw hook portion 27b (27a) is formed by the mold portion 72. is there.

  As described above, according to the liquid crystal display device according to the present embodiment, since the fixing portion of the front cabinet is provided inside the bezel that forms the outer edge of the backlight device, the frame can be narrowed. Become. Further, by fixing the claw, it is possible to reduce the screw bosses of the front cabinet.

  Next, a manufacturing technique of the thin display device according to the second embodiment of the present invention will be described with reference to the drawings. FIG. 11 is a diagram illustrating a state of work for attaching the front cabinet 5 and the rear cabinet 11 to the liquid crystal panel backlight unit 21. First, a mounting base 81 is prepared, and the liquid crystal panel backlight unit 21 is temporarily fixed to the base 81 in the vertical direction. Next, the front cabinet 5 is brought closer to the display surface of the liquid crystal panel backlight unit 21 as indicated by an arrow. Then, as shown in FIGS. 9 and 10, the claw hooks 27 a and 27 b of the front cabinet 5 are hooked on the bezel parts 53 and 55 forming the outer shape of the liquid crystal panel backlight part 21. At this time, as shown in FIG. 6, the boss portions 31a and 31b for fixing the front cabinet 5 and the through holes formed in the liquid crystal backlight portion serve as a guide for alignment. It has become. In this way, the front cabinet 5 is (temporarily) fixed by the claw part, so that another operator can work alone without supporting the liquid crystal panel backlight unit 21 (liquid crystal panel) from the back of the liquid crystal television. It becomes easy to do.

  As described above, in this embodiment, the liquid crystal television device is described as an example, but it is needless to say that the present invention can be applied to other electronic devices such as a thin display device.

  The present invention can be used for a liquid crystal television receiver and the like.

1 is an overall view of a liquid crystal television receiver according to a first embodiment of the present invention, as viewed from the front. It is the figure which looked at the liquid crystal television receiver from the back. It is a figure which shows the back surface of the backlight main-body part which removed the back cabinet. It is a figure which shows the detailed structural example of a front cabinet part. It is sectional drawing of a front cabinet fixed boss | hub, for example, it is a figure which shows the cross-sectional structure cut | disconnected longitudinally along the position P2 of FIG. 6A is an enlarged view of the upper part of FIG. 5, and FIG. 6B is an enlarged view of the lower part of FIG. It is a figure which shows the structure cross section cut in the vertical direction in the position of P1 of FIG. It is sectional drawing to which the upper part (FIG. 8 (A)) and lower part (FIG. 8 (B)) of FIG. 7 were expanded. FIG. 9 is an exploded view of FIG. 8. It is a figure which shows a mode that a nail | claw hook part is shape | molded with a metal mold | die. It is a figure which shows the mode of the operation | work which attaches a front cabinet and a back cabinet to a liquid crystal panel backlight part.

Explanation of symbols

DESCRIPTION OF SYMBOLS A ... Liquid crystal television receiver, 1 ... Display part main body, 3 ... Stand, 5 ... Front cabinet, 7 ... Liquid crystal panel, 21 ... Backlight part, 27 ... Claw part, 27a, 27b ... Claw hook, 27c ... Projection part 31 ... Fixing screw, 31a ... Fixing boss, 45 ... Backlight reflector, 53, 55 ... External shape (bezel), 58 ... Reinforcing member, 71 ... Panel holder, 72 ... Part of the mold.

Claims (8)

A display panel, a backlight unit arranged on the back side of the display panel and having a fixing unit for fixing the display panel, and a front cabinet arranged on the display panel side of the outer peripheral edge of the backlight unit to form a frame And having
The backlight portion has a locking portion that locks the front cabinet on the inner side of the outer end thereof,
The front cabinet is
A locked portion that the locking portion locks;
A base portion having a shape extending along a side surface of the outer shape portion of the backlight portion, and a claw hook portion having a shape provided at the tip of the base portion and hooked on the back surface of the outer shape portion, to the outer shape portion of the backlight portion. A nail portion to be fixed;
A thin display device comprising: A display panel, a backlight unit arranged on the back side of the display panel and having a fixing unit for fixing the display panel, and a front cabinet arranged on the display panel side of the outer peripheral edge of the backlight unit to form a frame And having
The backlight portion has a through hole for passing a fixing screw for fixing the front cabinet inside the outer end portion thereof,
The front cabinet has a boss portion that receives the fixing screw, a base portion that has a shape extending along a side surface of the outer shape portion of the backlight portion, and a shape that is provided at the tip of the base portion and hooks on the back surface of the outer shape portion. A claw hook part, and a claw part fixed to the outer shape part of the backlight part,
A thin display device comprising:   Furthermore, the said front cabinet is provided in the outer side of the said nail | claw part, and has a rear cabinet fixing | fixed part which fixes the rear cabinet arrange | positioned at the back side of the said backlight part. Thin display device.   The thin display device according to any one of claims 1 to 3, wherein the locked portion and the claw portion are provided at different positions along the outer periphery of the front cabinet.   5. The device according to claim 1, wherein the locking portion and the locked portion are disposed at a position where the front cabinet is temporarily fixed to the backlight portion by the claw portion. The thin display device according to any one of the above.   6. A decorative cover is provided on the front cabinet for covering a hole formed on the display panel side in terms of a mold structure in association with providing a claw portion on the front cabinet. The thin display device according to any one of the above. An assembly method for a thin display device according to any one of claims 1 to 6,
Placing the front cabinet at a position where the locking portion and the locked portion engage with each other with the backlight portion standing and fixed;
Bringing the engaged front cabinet and the backlight portion closer;
A step of sliding the claw portion on the side surface of the outer shape and hooking the claw hook to a rear side end portion of the outer shape of the backlight.   The assembly method according to claim 7, further comprising a step of fixing the front cabinet and the backlight portion by the locking portion and the locked portion.

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