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Lighting device, display device, and television receiving device

A technology for lighting devices and display devices, which is applied in the directions of lighting devices, lighting device parts, lighting and heating equipment, etc. Effect

Active Publication Date: 2014-11-19
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in the backlight unit described in Patent Document 1, the heat generated near the LED light source, the positional deviation of the reflection sheet, etc. may cause a part of the reflection sheet to float.
In this case, the light from the LED light source is blocked by the reflective sheet, and the display performance of the backlight unit may decrease.

Method used

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  • Lighting device, display device, and television receiving device
  • Lighting device, display device, and television receiving device
  • Lighting device, display device, and television receiving device

Examples

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Embodiment approach 1

[0036] Embodiment 1 will be described with reference to the drawings. In addition, an X axis, a Y axis, and a Z axis are shown in a part of each drawing, and each axis direction is described as a common direction in each drawing. Wherein, the Y-axis direction is consistent with the vertical direction, and the X-axis direction is consistent with the horizontal direction.

[0037] figure 1 An exploded perspective view of the television receiver TV of the first embodiment is shown. Such as figure 1 As shown, the television receiver TV includes: a liquid crystal display device 10; two front and rear cabinets Ca, Cb sandwiching and storing the liquid crystal display device 10; a power supply P; a tuner T; The liquid crystal display device 10 has a horizontally long square shape as a whole, and is housed in a vertical state.

[0038] figure 2 An exploded perspective view of the liquid crystal display device 10 is shown. image 3 A cross-sectional view in the vertical direct...

Embodiment approach 2

[0061] Embodiment 2 will be described with reference to the drawings. Figure 8 A plan view of the reflection sheet 126 and the LED light sources 128 of the backlight unit according to Embodiment 2 is shown viewed from the front side. Figure 9 Shown is an enlarged view of the reflective sheet 126 and the lens member 132 disposed on the front side of the LED substrate 130 from the left side in the horizontal direction ( Figure 9 The left side of ) is a side view when looking at the reflection sheet 126 and the lens member 132. Embodiment 2 differs from Embodiment 1 in that the LED light source 128 is not covered by a lens member and that the LED light source 128 is provided with a leg. The other configurations are the same as those in Embodiment 1, and therefore descriptions of the configurations, operations, and effects are omitted.

[0062] In the backlight unit according to Embodiment 2, the light emitting side of the LED light source 128 is not covered by the lens member,...

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PUM

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Abstract

A technology for restricting or suppressing a lift of a reflection sheet in a direct backlight device is provided. The direct backlight device according to the present invention includes an LED board 30, LEDs 28, lenses 32, legs 31a, 31b and 31c, a reflection sheet 26. The LEDs 28 are arranged on a surface of the LED board 30. The lenses 32 cover the respective LEDs 28 from the light exit side and diffuse light from the LEDs 28. The legs 31a, 31b and 31c are arranged on the surface of the LED board 30 and support the lenses 32. The reflection sheet 26 has through holes 27. The LEDs 28 and the legs 31a, 31b and 31c are passed through the respective through holes 27 of the reflection sheet 26. The reflection sheet 26 includes projections 26a, 26b and 26c projecting inward from an edge of the corresponding through hole 27. The three projections 26a, 26b and 26c are held between the three legs 31a, 31b and 31c.

Description

technical field [0001] The present invention relates to an illuminating device, a display device and a television receiving device. Background technique [0002] In recent years, the display elements of image display devices represented by television receivers have been continuously developed from the conventional Braun tubes to thin display devices using thin display elements such as liquid crystal panels and plasma display panels, which can realize the thinning of image display devices . Since the liquid crystal panel used in the liquid crystal display device does not emit light itself, it additionally needs a backlight device as an illuminating device. [0003] As a backlight device, a direct type backlight device that directly supplies light to a liquid crystal panel from the rear surface is known. In this backlight device, a reflective sheet may be arranged on a substrate on which light sources such as LEDs are arranged. [0004] Patent Document 1 discloses a direct ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V7/00G02F1/1333G02F1/13357F21Y101/02
CPCG02F1/133605G02F1/133606G02F1/133603G02F2001/133607G02F1/133607
Inventor 镰田健太郎
Owner SHARP KK