JP2006235424A - Thin type display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily make a thin type display device large-sized by efficiently discharging heat generated at a display portion and a driving circuit portion without installing a fan. <P>SOLUTION: A liquid crystal television 1 which has the driving circuit portion 6 arranged behind a back light device 2 is characterized in that: a flat plate type metallic support 7 is arranged between the back light device 2 and driving circuit portion 6 closely to the back light device 2 and driving circuit portion 6; a metallic stand 9 is arranged below the metallic support 7; and the metallic support 7 is pivoted on a metallic coupler 14 at two right and left lower-end positions to freely rotate in the front-rear direction by horizontal support shafts 12 and 13 and also pivoted on the stand 9 in the center in the right-left direction of the metallic coupler 14 to freely rotate in the horizontal direction by a vertical support shaft 8. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a thin display device such as a liquid crystal television, and more particularly to a thin display device having a heat dissipation structure that can efficiently discharge heat generated by a display panel unit and a control circuit unit.

In recent years, thin display devices such as liquid crystal televisions and PDPs have been increasing in size. With the increase in size, the power consumption increases due to the increase in screen size and the increase in audio output, resulting in an increase in the amount of heat generated inside the display device, resulting in an increase in internal temperature and the risk of thermal runaway of components on the board. The problem of image quality degradation has occurred. As a countermeasure, an exhaust fan is sometimes installed to forcibly ventilate hot air in the cabinet. However, when the exhaust fan is attached, dust accumulates in the cabinet, and further problems such as noise due to wind noise and increased power consumption have occurred. In view of this, as a countermeasure against high temperature in the cabinet, there is a “display device” described in Patent Document 1 and Patent Document 2 conventionally. The “display device” of Patent Document 1 is provided with a heat radiating fin at the upper end of a frame in order to efficiently discharge internal heat. The “display device” of Patent Document 2 is configured to transfer heat generated by the display panel to the chassis and then dissipate heat to the air.
JP 7-322171 A Japanese Patent Laid-Open No. 11-237844

  However, in the above-described “display device” of Patent Document 1, since the installation position of the heat radiating fin is the top of the frame, the air that has become hot due to the heat generation of the PDP and the heat generation of the signal unit in the frame rises, In this case, at least the upper part of the inside of the display device is exposed to a high temperature because it passes through the heat dissipating fins and is discharged to the outside. In addition, the “display device” disclosed in Patent Document 2 uses a chassis made of a material having good thermal conductivity such as aluminum to efficiently discharge heat generated by the display panel, but forcibly exhausts air that has become hot inside. Therefore, a fan is necessary, and the problem of noise and dust suction cannot be solved. Accordingly, in order to solve these problems, the present invention has an object to propose a thin display device that can efficiently discharge heat generated from a display unit and a circuit unit without installing a fan, and can be easily enlarged. .

In order to solve the above-mentioned problems, a thin display device according to the present invention is provided with a metal heat transfer plate penetrating downward in the middle in the front-rear direction of the main body, and a metal stand at the lower end of the heat transfer plate. Are connected.
Specifically, in the thin display device in which the driving circuit unit of the thin display device is disposed behind the display panel unit, the display panel unit and the circuit unit are disposed in close contact with each other between the display panel unit and the circuit unit. The plate-shaped metal support bracket, the metal stand disposed below the support bracket, and the support bracket can be rotated in the front-rear direction by two horizontal support shafts at the bottom left and right of the support bracket. And a metal connecting bracket that is pivotally supported at the center in the left-right direction and is pivotally supported in a horizontal direction by a vertical support shaft on the stand.
Further, in the thin display device in which the backlight device and the drive circuit unit of the thin display device are arranged behind the display panel unit, the backlight device and the drive circuit unit are provided between the backlight device and the drive circuit unit. A plate-shaped metal support bracket disposed in close contact, a metal stand disposed below the support bracket, and front and rear of the support bracket by two horizontal support shafts at the left and right sides of the lower end of the support bracket And a metal connecting bracket that is pivotally mounted in a horizontal direction and supported in a horizontal direction by a vertical support shaft at the center in the left-right direction. To do. The stand is preferably formed by three or more metal legs extending radially downward from the vertical support shaft portion.
Further, it is preferable that a heat radiating fin is provided on the surface of the leg.
Furthermore, it is preferable that a hole for heat dissipation is formed in the leg.

  As described above, according to the present invention, the metal member having the heat transfer function is arranged in the main body of the thin display device, and the metal stand is connected to the lower end thereof, so that the display panel and the drive circuit in the main body are connected. The heat generated in the part is transmitted to the lower stand through the heat transfer member and is efficiently discharged to the outside air, and a thin display device is provided without installing an exhaust fan or the like and maintaining good image quality. Can be made larger.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
1 is a longitudinal sectional perspective view showing a main part of a first embodiment in which the present invention is applied to a liquid crystal television, FIG. 2 is a longitudinal sectional perspective view showing a main part of the liquid crystal television main body, and FIG. 4 is a rear perspective view of the main part with the rear cabinet removed, FIG. 4 is a bottom perspective view showing the main part of the liquid crystal television main body, and FIG. 5 is a top view and a front view showing the support bracket as a single unit. FIG. 6 is a side view showing the rotation range of the support fitting, and FIG. 7 is a side view showing a state where the support fitting is attached to the stand.

  As shown in FIGS. 1 to 4, a backlight device 2 is arranged at a substantially central portion of the liquid crystal television 1, a liquid crystal panel 3 is arranged in front of the backlight device 2, and the periphery of the liquid crystal panel 3 is supported by the front cabinet 4. The periphery of the front cabinet 4 is joined to the rear cabinet 5 and fastened with screws. Inside the rear cabinet 5 is housed a drive circuit unit 6 of a liquid crystal television made of a substrate or the like. A support fitting 7 made of a metal plate is disposed between the backlight device 2 and the drive circuit unit 6, and the backlight device 2 and the drive circuit unit 6 are fastened to the support fitting 7 with screws. A metal vertical support shaft 8 is suspended from the lower end of the support bracket 7, and the vertical support shaft 8 is inserted into the hole of the metal stand 9 so that the liquid crystal television 1 can be rotated in the horizontal direction. Is supported by the stand 9. The stand 9 is configured by extending three metal legs radially downward. In addition, 15 in FIG. 1 is a connection metal fitting when the liquid crystal television 1 is supported by wall hanging.

  As shown in FIGS. 3 and 5, the support fitting 7 is made of a metal plate that is connected to a vertical plate 11 made of a metal plate and a lower end portion of the vertical plate 11 via metal horizontal support shafts 12 and 13. The connecting bracket 14 is composed of a metal vertical support shaft 8 suspended from the central lower surface of the connecting bracket 14. A plurality of mounting holes 11a are formed in the vertical plate 11, and the backlight device 2 and the drive circuit unit 6 are fastened by screws. Both sides of the vertical plate 11 are bent in a U shape in the rearward direction of the liquid crystal television 1, and the bent portion is pivotally attached to a box-shaped connecting bracket 14 via horizontal support shafts 12 and 13. With the horizontal support shafts 12 and 13, the vertical plate 11 can be rotated in the front-rear direction. FIG. 6 shows the rotation range of the vertical plate 11. By rotating the vertical plate 11 in the front-rear direction, the angle of the screen of the liquid crystal television 1 can be adjusted up and down.

  Since the liquid crystal television 1 is configured in this way, the heat generated in the backlight device 2 and the drive circuit unit 6 during the lighting of the liquid crystal television 1 is transmitted to the vertical plate 11 of the support bracket 7 and conducted downward. Then, the light is transmitted to the horizontal support shafts 12, 13, the connecting bracket 14, the vertical support shaft 8, and the stand 9 in order. The heat transferred to the stand 9 having a large surface area and exposed to the outside air is efficiently discharged from the surface of the stand 9 to the outside air. As a result, it is possible to increase the size of the liquid crystal television 1 without installing an exhaust fan or the like on the liquid crystal television 1 and maintaining good image quality.

  Further, in order to increase the heat discharge amount in the heat transfer path formed in the liquid crystal television 1 in this way, it is preferable that the material of the support bracket 7 and the stand 9 be made of a material having good thermal conductivity, and the vertical direction. It is preferable to widen the plate 11 and increase the thickness of each part. Moreover, it is preferable to inject | pour grease and silicone oil into the fitting part of the horizontal spindles 12 and 13 and the vertical spindle 8 so that there may be no clearance. Further, although not shown, it is preferable that a heat radiating fin is provided on the surface of the stand 9 or a hole is formed through the stand 9.

  Next, a second embodiment will be described. The second embodiment is different from the first embodiment described above in that the structure of the support fitting and the stand is partially different. FIG. 8 is a top view, a front view, and a bottom view showing a part of the support metal fitting and the stand in the second embodiment, and FIG. 9 is a side view showing the support metal fitting and the stand. As shown in FIG. 8, the support bracket 21 includes a vertical plate 22 made of a metal plate, and a metal connection bracket 25 connected to the lower end of the vertical plate 22 via metal horizontal support shafts 23 and 24. And a bottom plate 28 fastened to the lower surface of the connection fitting 25 by screws 26 and 27.

  Further, the bottom plate 28 is pivotally attached to a boss portion 32 projecting from the center upper portion of the stand 31 through a connecting pin 29 at the center thereof so as to be horizontally rotatable. The stand 31 is configured by radially extending three metal legs diagonally downward. In this embodiment, after assembling in the state shown in FIGS. 8 and 9, when the bottom plate 28 is fastened to the connecting bracket 25 with screws 26 and 27, the connecting pin 29 is screwed so as not to come off from the boss portion 32. Therefore, although the support bracket 21 and the stand 31 can rotate with respect to each other, they are not separated. That is, an effect can be obtained in which the stand 31 can be prevented from dropping from the liquid crystal television 1 when the liquid crystal television (not shown) assembled to the support bracket 21 is carried for movement. Since other configurations and operations are the same as those of the first embodiment described above, detailed description thereof is omitted.

  In addition to the liquid crystal display device, the present invention can also be used for thin display devices such as a PDP having a display panel that generates heat and a control circuit, an electroluminescence display, a field emission display, and the like.

1 is a longitudinal sectional view of a first embodiment in which the present invention is applied to a liquid crystal television. It is a longitudinal cross-sectional view of the state which removed the stand from FIG. It is the longitudinal cross-sectional view which rotated the cross-sectional direction of FIG. 2 90 degree | times. It is a bottom view of FIG. It is the top view, front view, and bottom view which showed the support metal fitting of FIG. 1 alone. It is a side view which shows the rotation range of the support metal fitting of FIG. It is a side view which shows the state which attached the support metal fitting of FIG. 1 to the stand. It is the top view, front view, and bottom view of the support metal fitting and stand in 2nd Embodiment which applied this invention to the liquid crystal television. It is a side view which shows the support metal fitting and stand of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Liquid crystal television 2 Backlight apparatus 3 Liquid crystal panel 4 Front cabinet 5 Rear cabinet 6 Drive circuit part 7 Support metal fitting 8 Vertical support shaft 9 Stand 11 Vertical board 11a Mounting hole 12, 13 Horizontal support shaft 14 Connection metal fitting 15 Connection metal fitting 21 Support metal fitting 22 Vertical plate 23, 24 Horizontal support shaft 25 Connecting bracket 26, 27 Screw 28 Bottom plate 29 Connecting pin 31 Stand 32 Boss

Claims (6)

A thin display device characterized in that a metal heat transfer plate is provided penetrating downward in the middle of the main body in the front-rear direction, and a metal stand is connected to the lower end of the heat transfer plate. In the thin display device in which the driving circuit unit of the thin display device is arranged behind the display panel unit,
A flat metal support bracket disposed between the display panel unit and the drive circuit unit in close contact with the display panel unit and the drive circuit unit;
A metal stand disposed below the support bracket;
The support bracket is pivotably mounted in the front-rear direction by two horizontal support shafts at the lower left and right sides of the support bracket, and is rotated horizontally by the vertical support shaft at the center in the left-right direction. A metal fitting that is pivotally supported for movement,
A thin display device comprising: In the thin display device in which the backlight device and the drive circuit unit of the thin display device are arranged behind the display panel unit,
A plate-shaped metal support fitting disposed in close contact with the backlight device and the drive circuit unit between the backlight device and the drive circuit unit;
A metal stand disposed below the support bracket;
The support bracket is pivotably mounted in the front-rear direction by two horizontal support shafts at the lower left and right sides of the support bracket, and is rotated horizontally by the vertical support shaft at the center in the left-right direction. A metal fitting that is pivotally supported for movement,
A thin display device comprising: The thin display device according to claim 1,
2. The thin display device according to claim 1, wherein the stand is formed of three or more metal legs extending radially downward from the vertical support shaft portion. The thin display device according to claim 4,
A thin display device characterized in that heat radiation fins are provided on the surface of the legs. The thin display device according to claim 4 or 5,
A thin display device, wherein a heat radiating hole is formed in the leg.

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