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Light source device, image display device and television receiver device

A light source device and light source technology, applied in the cooling/heating device, light source, electric light source, etc. of lighting devices, can solve the problems of low luminous current, high calorific value, and shortened life of light-emitting diodes, etc., to increase the contact area , the effect of suppressing temperature rise, simple maintenance and position change

Inactive Publication Date: 2012-05-16
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when a light emitting diode is used, the amount of light emitted is relatively low relative to the amount of current supplied, so the amount of heat generated increases in proportion to the amount of light emitted, and there is a possibility that the life of the light emitting diode is shortened due to the high amount of heat generated. question

Method used

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  • Light source device, image display device and television receiver device
  • Light source device, image display device and television receiver device
  • Light source device, image display device and television receiver device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach 1-1

[0136] image 3 is a cross-sectional view showing the structure of an image display device including the light source device according to Embodiment 1-1 of the present invention, Figure 4 is a schematic perspective view in which a part of the light source device is disassembled, Figure 5 It is a perspective view showing the configuration of the light source unit of the light source device of the image display device according to Embodiment 1-1 of the present invention.

[0137] The image display device 1 of the present invention includes: a display portion 70 (liquid crystal panel H) having a display surface for displaying images on the front side; a light source device A (backlight device) including a 70 the light source unit 10 on the rear side;

[0138] The display unit 70 includes: a display panel 72 having a display surface; and an optical sheet 73 arranged behind the display panel 72 . The peripheral portion of the display panel 72 is sandwiched and held in the fron...

Embodiment approach 1-2

[0167] Figure 10 It is a cross-sectional view of main parts showing a state in which the light source unit 10 is held by the holder 6 in the image display device according to Embodiment 1-2.

[0168]On the other surface 2 b of the light emitting diode substrate 2 , a plurality of locking portions 20 , 20 , . The locking portion 20 is made of metal and is elastically deformable. The locking portion 20 is obtained by bending a plate. For example, the elongated plate is bent symmetrically with respect to the center in the longitudinal direction, and fixed to the other surface 2b so that the short direction follows the long direction of the light emitting diode substrate 2 .

[0169] That is, the engaging part 20 is constituted by a base 20c and a pair of pressing pieces 20d, 20d, wherein the above-mentioned base 20c is the center part in the longitudinal direction of the locking part 20, and the above-mentioned pair of pressing pieces 20d, 20d and Two opposite edges of the ba...

Embodiment approach 1-3

[0177] Figure 11 It is a cross-sectional view of main parts showing a state in which the light source unit 10 is held by the holder 6 in the image display device according to Embodiment 1-3 of the present invention.

[0178] On the other surface 2 b of the light emitting diode substrate 2 , a plurality of locking portions 20 , 20 , . The locking portion 20 is made of metal and is elastically deformable. The locking portion 20 is obtained by bending a plate. For example, the elongated plate is bent symmetrically with respect to the center in the longitudinal direction, and fixed to the other surface 2b so that the short direction follows the long direction of the light emitting diode substrate 2 .

[0179] Specifically, the locking portion 20 is composed of a flat base 20f, a pair of pressure contact pieces 20g, 20g, and anti-slip portions 20h, 20h, wherein the base 20f is formed at the center of the locking portion 20 in the longitudinal direction. The above-mentioned pair...

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Abstract

Disclosed is an image display device, a television receiver device, and a light source device such that substrates can be electrically connected even if said substrates are separated by more than a prescribed distance, or are in closer proximity than a prescribed distance. A light source unit with light emitting diodes arranged in rows on one surface of a light emitting diode substrate (2) is provided with latching sections (20) on the other surface (2b) of the light emitting diode substrate (2). The locking sections (20) are latched onto latching slits (63, 63... 63) in a holding body (6) for holding the light source unit, allowing the light source unit to slide along one surface of the holding body (6).

Description

technical field [0001] The present invention relates to a light source device, an image display device including the light source device, and a television receiver. Background technique [0002] For example, image display devices such as liquid crystal televisions include so-called direct-type image display devices and edge-light type display devices. In the above-mentioned edge-light image display device, the fluorescent tubes are arranged only on two sides or one side of the light guide plate, and the light incident on the light guide plate is irradiated to the above-mentioned liquid crystal panel. However, in the above-mentioned direct type and edge light type image display devices using fluorescent tubes, there are problems of non-uniform temperature rise due to the fluorescent tubes and low light use efficiency. [0003] To solve the above problems, light emitting diodes (Light Emitting Diode: LED) are recently used instead of fluorescent tubes as backlight sources. H...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21V19/00F21V29/00G02F1/13357F21Y101/02F21V29/503F21V29/70
CPCG02F1/133608G02F1/133603F16B5/126G02B7/008
Inventor 大宫佑贵川村优贵渡边武史石合广和竹内秀仁香月正也篠原克己
Owner SHARP KK
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