JP4497152B2 - Thin display device - Google Patents

Description

  The present invention relates to a thin display device, and more particularly, to an attachment structure of a cabinet portion, a display panel portion, and a support portion attached to a tilt stand of the thin display device.

  The thin display device includes a cabinet (box body) portion and a display panel portion surrounded by the cabinet portion. Further, when the thin display device is installed on a TV stand or the like, a stand for installation is provided. If necessary, attach the cabinet part to the support part provided in this stand. In addition, a tilt (with an angle adjustment function) type tilt stand is used as this stand. This is because the thin display device is excellent in space saving performance in the front and rear, and the angle can be adjusted in the vertical direction and the horizontal direction by taking advantage of the advantage.

  The support portion and the cabinet portion are fixed by fastening together a boss portion provided in the cabinet portion and a screw hole provided in the support portion with a common screw. By this co-fastening, the entire weight of the cabinet part (including the display panel part provided inside the cabinet part) is supported.

  Further, when the tilt function described above is used, especially when tilted (tilted) in the vertical direction, further stress is applied to the support portion. Furthermore, the display panel section may be distorted by its own weight when tilted in the vertical direction. This distortion may cause the image to deteriorate, or a gap may be generated between the front cabinet section and dust may enter. That was a problem. Therefore, in order to solve such a problem, a configuration is used in which a mounting bracket for separately supporting and fixing the display panel unit from two directions from below and from the rear (backward direction) is used. A conventional tilt stand mounting structure will be described below with reference to the drawings.

  FIG. 6 is a schematic sectional view of a tilt stand mounting structure of a liquid crystal display device which is a conventional thin display device. The liquid crystal display device includes a front cabinet 102, a rear cabinet 103, a display panel unit 104, a support unit 101, and a mounting bracket 105. The front cabinet 102 and the rear cabinet 103 surround the display panel unit 104 and constitute a display device unit (the front cabinet 102, the display panel unit 104, and the rear cabinet 103). Boss portions 107 a and 107 b for attaching the display device portion to the support portion 101 protrude from the front cabinet portion 102 toward the back surface. The bosses 107a and 107b are respectively provided with screw holes 102a and 102b. The support portion 101 is provided with through holes 101a and 101b. The rear cabinet portion 103 is provided with through holes 103a and 103b at positions corresponding to the boss portions 107a and 107b, and screws 108a and 108b are inserted from the back side so as to surround the display panel portion 104. The part 102 and the support part 101 are fixed.

  However, the display panel unit 104 is not fixed only by this, and distortion occurs when tilting in the vertical direction as described above. Therefore, the mounting bracket 105 having a portion that is in contact with a part of the lower part of the display panel unit 104 (a part 104a on the lower surface and a part 104b on the rear surface) is used. The lower part of the mounting bracket 105 is sandwiched between the support part 101 and the boss part 107 a of the front cabinet part 102. The mounting bracket 105 is provided with a through hole 105a at a position corresponding to the screw hole of the boss portion 107a. Screws 108 a are inserted into the through holes 105 a and 103 a from the rear surface of the rear cabinet portion 103 and fastened together with the front cabinet portion 102, the support portion 101, and the rear cabinet 103. By this joint fastening, the mounting bracket 105 is fixed. In addition, a screw hole 104c is provided in a portion 104b on the back surface of the display panel 104 where the mounting bracket 105 abuts, and the mounting bracket 105 is also provided with a through hole 105c at a position corresponding to the screw hole 104c. ing. The screw 108c is inserted into the screw hole 104c and the through hole 105c and fastened together. The display panel unit 104 is supported and fixed to the mounting bracket 105 by this tightening.

  With such a configuration, the display panel unit 104 is fixed in the vertical direction and the front-rear direction, and even if the support unit 101 is tilted back and forth, the display panel unit 104 is not displaced or distorted.

In addition, although it is not the attachment to a stand as mentioned above, as a technique using an attachment metal fitting for attachment (connection) between members, it describes in patent document 1, for example.
JP 2005-331815 A

  However, in the thin display device, the display screen has been increased in size as the technology is improved and the market is expanded. On the other hand, as the display screen is increased, the price of the relatively small thin display device is significantly reduced due to market competition. Improvement of work efficiency and reduction of material costs are regarded as important.

  Accordingly, the present invention has been made in view of the above problems, and provides a tilt stand mounting structure for a thin display device that does not cause distortion in the display panel during tilting without providing a mounting bracket. It is intended.

  In order to achieve the above object, a tilt stand mounting structure for a thin display device according to the present invention comprises a front cabinet part, a rear cabinet part, and a display panel part surrounded by the front cabinet part and the rear cabinet part. In a tilt stand mounting structure of a thin display device that mounts the device on a support provided in the tilt stand, the front cabinet portion has a boss portion that protrudes toward the back of the front cabinet portion, and the boss portion is an internal The display panel portion includes a fitting portion having a recess that fits into the boss portion, the fitting portion includes a first through hole that communicates with the screw hole, and the support portion includes the fitting portion and the rear portion. It is arranged so as to be sandwiched between cabinets and has a second through hole, the rear cabinet part has a third through hole, The one through hole, the second through hole, and the third through hole have the same axis as the screw hole, and include a screw that penetrates through the first through hole, the second through hole, and the third through hole. The front end portion is screwed into the screw hole of the boss portion, and the front cabinet portion, the display panel portion, the support portion, and the rear cabinet portion are fastened together.

  With such a configuration, a tilt stand mounting structure for a thin display device that does not require a separate mounting bracket for supporting and fixing the display panel unit is possible. Therefore, it is possible to improve work efficiency and reduce costs.

  Still further, in order to achieve the above object, in the tilt stand mounting structure of the thin display device according to the present invention, the front cabinet portion includes a second boss portion, and the second boss portion includes a second screw hole therein. The front end surface of the second boss portion is in contact with the front surface of the support portion, the support portion includes a fourth through hole that communicates with the second screw hole, the rear cabinet portion includes a fifth through hole, and the fourth through hole. The hole and the fifth through hole have the same axis as the second screw hole, and the second through screw is inserted through the fourth through hole and the fifth through hole. The front cabinet portion, the support portion, and the rear cabinet portion are fastened together by being screwed into the second screw hole.

  With such a configuration, it is possible to form the attachment structure more firmly, and it is possible to alleviate and reduce the stress applied to the fitting portion of the display panel portion particularly during tilting.

  Still further, in order to achieve the above object, in the tilt stand mounting structure of the thin display device according to the present invention, the first through hole is formed on the front side, the hole portion having the same diameter as the screw hole, and the support portion on the back side. And a tapered portion having a large diameter as it reaches the abutting surface.

  With such a configuration, when the screw is screwed from the back side, it is easy to guide the tip of the screw to the first through hole. Therefore, the work efficiency at the time of assembly is improved, and the display panel portion is not damaged by the tip portion of the screw.

  In order to achieve the above object, the tilt stand mounting structure for a thin display device according to the present invention is characterized in that the boss portion and the second boss portion are cylindrical.

  With such a configuration, the configuration is strong against stress and collision, and durability is improved.

  The boss part and the second boss part are characterized in that they have a cylindrical shape having a tapered outer shape having a small diameter from the root part to the tip part.

  With such a configuration, the configuration is more robust against stress applied to the boss portion and the second boss portion.

  According to the stand mounting structure of the thin display device of the present invention, the mounting bracket used on the back surface of the display panel is not necessary, and the material cost can be reduced and the work efficiency can be improved.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, a stand mounting structure for a liquid crystal television according to the first embodiment of the present invention will be described. FIG. 1 is an exploded perspective view of the liquid crystal television of this embodiment. FIG. 2 is a cross-sectional view of the main part of the mounting structure of this embodiment. FIG. 3 is a rear view of the display panel unit 4 of the present embodiment. FIG. 4 is a perspective view of the tilt device of the present embodiment. FIG. 5 is an enlarged perspective view of the protective rib 11 of the present embodiment. However, in FIG.

  As shown in FIG. 1, the liquid crystal display device of this embodiment is provided with a front cabinet part 2 on the front side and a rear cabinet part 3 on the back side as a box, and a display panel part 4 surrounded by the box. Have. Furthermore, the liquid crystal display device is provided with a support portion 1 provided in a tilt stand 10 required when the liquid crystal display device is placed on a television stand or the like.

  The front cabinet portion 2 has a frame shape having an opening in the front view. From the opening, the display surface of the display panel unit 4 located on the back surface of the front cabinet unit 2 can be seen. The back side of the contour forming portion of the opening and the display surface side of the display panel unit 4 are in contact with each other so that no gap is generated.

  In addition, a plurality of boss portions are provided on the back surface of the front cabinet portion 2. However, only the bosses 7a and 7b relating to the main part of the present case will be described here. As shown in FIG. 2, the boss portions 7 a and 7 b protrude from the front cabinet portion 2 perpendicularly toward the back surface. The boss portions 7a and 7b are respectively provided with screw holes 2a and 2b. Of the two types of boss portions 7a and 7b, the boss portion 7b on the bottom surface side extends until the length abuts on a support portion 1 described later. The outer shape is cylindrical, and is strong against external stress. Further, the root portion located on the front side is thicker than the tip portion located on the back side of the boss portion 7b, that is, the tapered outer shape having a small diameter from the root portion to the tip portion. This increases the strength further. Further, the inside has a screw hole 2b, and this screw hole 2b has a length equivalent to the length of the boss portion 7b.

  On the other hand, the boss portion 7a is shorter than the lower boss portion 7b. This is because a part of the boss fitting portion 4a provided to extend from the support substrate body 4b of the display panel portion 4 is interposed between the support portion 1 and the boss portion 7a, which will be described later. Similarly to the boss portion 7b, the boss portion 7a has a cylindrical outer shape and is resistant to external stress. Further, the root portion located on the front side is thicker than the tip portion of the boss portion 7a located on the back side, thereby further increasing the strength. Moreover, it has a screw hole 2a inside, and this screw hole 2a has a length equivalent to the length of the boss portion 7a. Further, the screw 8 a inserted into the screw hole 2 a is inserted from the rear surface of the rear cabinet portion 3. These boss portions 7 a and 7 b are formed by integral molding with the front cabinet portion 2.

  As shown in FIGS. 2 and 3, the display panel unit 4 includes a display unit 4c and a support substrate body 4b that supports the display unit 4c. The support substrate 4b is made of ABS resin (acrylonitrile butadiene styrene copolymer compound), and is an engineering plastic excellent in rigidity, hardness, impact resistance, and bending fatigue. The display unit 4c includes a liquid crystal panel, a wiring board, and the like, all of which are attached to the support substrate body 4b by screws, an adhesive, or an engaging part.

  From the lower back surface side of the support substrate body 4b, a boss fitting portion 4a having a recess for fitting with a part including the tip portion of the boss portion 7a is formed. The boss fitting portion 4a protrudes from the lower end portion of the support substrate body 4b in the back direction and extends further downward from the raised portion. The portion extending downward includes a part including the tip portion of the boss portion 7a. The shape is covered. A through hole 4b having the same diameter as the screw hole 2a is provided in a portion corresponding to the screw hole 2a of the boss portion 7a. The through-hole 4b penetrates from the surface that fits and contacts the tip surface of the boss portion 7a to the back side. When the boss fitting portion 4a and the boss portion 7a are fitted together, one screw 8a is inserted. Pass through from the back side. Further, a recessed portion 4d is formed in a tapered shape from the surface of the boss fitting portion 4a that contacts the support portion 1 to the through hole 4b. Accordingly, when the screw 8a is inserted from the rear side of the rear cabinet 3, it becomes easy to guide the screw 8a to the through hole 4b, and the working efficiency is improved. Further, a triangular rib 4e is formed from the upper end of the surface in contact with the front surface of the support portion 1 to the back surface of the support substrate body 4b. Thereby, the mechanical strength with respect to the stress concerning this boss | hub fitting part 4a is increasing.

  The support part 1 is made of metal. Further, since it is provided in a tilt device having a tilt function, the liquid crystal display device can be tilted up and down. As shown in FIG. 4, the tilt stand 1 has a bent portion 1c. This is provided in order to increase the strength of the support portion 1 in the front-rear direction because the weight of the liquid crystal display device is applied to the support portion 1 and the weight is applied in the front-rear direction when tilted in the vertical direction. Also, through holes 1a and 1b are provided. The through holes 1a and 1b are formed at positions corresponding to the boss portions 7a and 7b described above, and are holes through which the screws 8a and 8b are passed.

  The rear cabinet unit 3 covers the display panel unit 4 from the back, and is fastened by the front cabinet unit 2 with screws 8a, an engaging unit (not shown) or the like to surround the display panel unit 4. Through holes 3a and 3b are formed in the lower portion of the rear cabinet portion 3, and are formed at positions corresponding to the boss portions 7a and 7b in the same manner as described above. The corresponding position means a position determined so that the screws 8a and 8b penetrate when these members are assembled.

  The front cabinet part 2, the display panel part 4, the rear cabinet part 3 and the support part 1 formed in this way are, as shown in FIGS. 1 and 2, the front cabinet part 2, the display panel part 4 and the support from the front. The parts 1 and the rear cabinet part 3 are overlapped in this order, and the positions of the respective holes are made to coincide with each other and the screws 8a and 8b are passed through and fastened together. The flanges of the screws 8a and 8b are in contact with the back surface of the rear cabinet unit 3 and fix the respective members. At this time, the boss fitting portion 4a of the display panel portion 4 is attached in a state of being fitted to the boss portion 7a.

  With such a configuration, each member is fixed. When the liquid crystal display device is tilted rearward, the surface of the display panel portion 4 facing the back side of the boss fitting portion 4a comes into contact with and is pressed against the support portion 1, so that the display panel portion 4 is distorted by its own weight. Therefore, no gap appears between the front cabinet section 2 and the display panel section 4 of the display panel section 4.

  Moreover, in this embodiment, since the above-mentioned boss | hub fitting part 4a becomes the shape which protruded to the lower part of the display panel part 4, there exists a possibility of damaging by a fall or a collision in the stage before an assembly with another member. . Therefore, a protective rib 11 protruding below the boss fitting portion 4a is provided. The protective rib 11 has a plate-like portion 11a parallel to the display surface and a raised portion 11b formed perpendicular to the edge of the plate-like portion. In addition, a raised portion 11c is provided so as to bisect the plate-like portion 11a in the left-right direction. These raised portions 11b and 11c suppress the increase in the weight of the protective rib 11 and increase the strength. Therefore, it is possible to withstand an impact caused by a drop or a collision, and the protective rib 11 and the boss fitting portion 4a. In addition, it is possible to prevent the entire display panel unit 4 from being damaged. Moreover, it is also possible to add a function as a wire clamper by providing a locking portion on the protective rib 11.

  In addition, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the spirit of the present invention.

It is a disassembled perspective view of the liquid crystal television of this embodiment. It is sectional drawing in the principal part of the attachment structure of this embodiment. It is a rear view of the display panel part of this embodiment. It is an enlarged view of the tilt stand of this embodiment. It is a perspective view of the protection rib of this embodiment. It is sectional drawing which shows the attachment structure of the conventional thin display apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Support part 1a Through-hole 1b Through-hole 2 Front cabinet part 2a Screw hole 2b Screw hole 3 Rear cabinet part 3a Through-hole 3b Through-hole 4 Display panel part 4a Boss fitting part 4b Through-hole 4d Depression part 7a Boss part 7b Boss part 8a screw 8b screw

Claims (5)

Front cabinet section,
The rear cabinet section,
A display panel portion surrounded by the front cabinet portion and the rear cabinet portion;
In the tilt stand mounting structure of the liquid crystal television, the liquid crystal television comprising:
The front cabinet part has a boss part raised in the back direction of the front cabinet part,
The boss part has a screw hole inside,
The display panel portion includes a fitting portion having a recess to be fitted to the boss portion,
The fitting portion includes a first through hole that communicates with the screw hole. The first through hole has a hole portion having the same diameter as the screw hole on the front surface side, and a surface that contacts the support portion on the back surface side. A taper-shaped part that becomes a large diameter as
The support portion is disposed so as to be sandwiched between the fitting portion and the rear cabinet, and includes a second through hole.
The rear cabinet portion includes a third through hole,
The first through hole, the second through hole, and the third through hole are on the same axis as the screw hole,
A screw that penetrates through the first through hole, the second through hole, and the third through hole;
The front end portion of the screw is screwed into the screw hole of the boss portion, and the front cabinet portion, the display panel portion, the support portion, and the rear cabinet portion are fastened together,
The front cabinet portion includes a second boss portion, the second boss portion includes a second screw hole therein, and a front end surface of the second boss portion is in contact with a front surface of the support portion. And
The support portion includes a fourth through hole that communicates with the second screw hole,
The rear cabinet portion includes a fifth through hole,
The fourth through hole and the fifth through hole are on the same axis as the second screw hole,
A second screw threaded through the fourth through hole and the fifth through hole;
The tip part of the second screw is screwed into the second screw hole of the second boss part, and the front cabinet part, the support part and the rear cabinet part are fastened together,
The tilt stand mounting structure for a thin display device, wherein the boss portion and the second boss portion have a cylindrical shape having a tapered outer shape having a small diameter from the base portion to the tip portion. Front cabinet section,
The rear cabinet section,
A display panel portion surrounded by the front cabinet portion and the rear cabinet portion;
In the tilt stand mounting structure of the thin display device, in which the thin display device is attached to the support provided in the tilt stand,
The front cabinet part has a boss part raised in the back direction of the front cabinet part,
The boss part has a screw hole inside,
The display panel portion includes a fitting portion having a recess to be fitted to the boss portion,
The fitting portion includes a first through hole communicating with the screw hole,
The support portion is disposed so as to be sandwiched between the fitting portion and the rear cabinet, and includes a second through hole.
The rear cabinet portion includes a third through hole,
The first through hole, the second through hole, and the third through hole are on the same axis as the screw hole,
A screw that penetrates through the first through hole, the second through hole, and the third through hole;
The front end portion of the screw is screwed into the screw hole of the boss portion, and the front cabinet portion, the display panel portion, the support portion, and the rear cabinet portion are fastened together,
The front cabinet portion includes a second boss portion, the second boss portion includes a second screw hole therein, and a front end surface of the second boss portion is in contact with a front surface of the support portion,
The support portion includes a fourth through hole that communicates with the second screw hole,
The rear cabinet portion includes a fifth through hole,
The fourth through hole and the fifth through hole are on the same axis as the second screw hole,
A second screw threaded through the fourth through hole and the fifth through hole;
A thin display , wherein a front end portion of the second screw is screwed into the second screw hole of the second boss portion, and the front cabinet portion, the support portion, and the rear cabinet portion are fastened together. Device tilt stand mounting structure. The first through hole is
On the front side, a hole portion having the same diameter as the screw hole,
A taper-shaped portion on the back side, the diameter of which increases as the surface comes into contact with the support portion; and
The tilt stand mounting structure according to claim 2 , comprising: 4. The tilt stand mounting structure according to claim 2, wherein the boss portion and the second boss portion are cylindrical . The tilt according to any one of claims 2 to 4 , wherein the boss part and the second boss part have a cylindrical shape having a tapered outer shape having a small diameter from a root part to a tip part. Stand mounting structure.

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