Edge light-type surface light source device and illumination device

一种照明装置、面光源的技术，应用在照明装置、光源、电光源等方向，达到长度缩短的效果

Inactive Publication Date: 2015-02-11
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it is very difficult to make the length of the LED light source substrate 140 less than 0.8 times the length of the corresponding short side.

Method used

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  • Edge light-type surface light source device and illumination device
  • Edge light-type surface light source device and illumination device
  • Edge light-type surface light source device and illumination device

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0113] First, use figure 1 with figure 2 Next, the surface light source device 10 of the first embodiment as an example of the edge-light type surface light source device of the present invention will be described.

[0114] (Structure of surface light source device)

[0115] figure 1 The configuration of the surface light source device 10 according to the first embodiment of the present invention is schematically shown. figure 1 The illustrated surface light source device 10 includes a light guide plate 120 and LED light source substrates 140a and 140b. This surface light source device 10 is a so-called edge-light type surface light source device that irradiates light from the side of the light guide plate 120 to the interior of the light guide plate 120 using LED light source substrates 140 a and 140 b disposed on the side surfaces of the light guide plate 120 .

[0116] The light guide plate 120 corresponds to the shape of the liquid crystal display panel mounted in ...

no. 2 approach

[0150] Next, use image 3 with Figure 4 Next, the surface light source device 30 of the second embodiment as an example of the edge-light type light source substrate of the present invention will be described.

[0151] image 3 The configuration of the surface light source device 30 according to the second embodiment of the present invention is schematically shown. In the surface light source device 30 of the second embodiment, the arrangement of the LED light source boards is different from that of the surface light source device 10 , and is the same as that of the surface light source device 10 in other respects.

[0152] Specifically, as image 3 As shown, in the surface light source device 30 of the second embodiment, the LED light source substrate 140a is disposed at the left central portion of the light guide plate 120 , and the LED light source substrate 140b is disposed at the right central portion of the light guide plate 120 .

[0153] Figure 4 In the surface ...

no. 3 approach

[0161] Next, use Figure 5 with Image 6 Next, a surface light source device 50 according to a third embodiment as an example of the edge-light type light source substrate of the present invention will be described.

[0162] Figure 5 The configuration of the surface light source device 50 according to the third embodiment of the present invention is schematically shown. The surface light source device 50 of the third embodiment differs from the surface light source devices 10 and 30 in the arrangement of the LED light source boards, and is the same as the surface light source devices 10 and 30 in other respects.

[0163] Specifically, as Figure 5 As shown, in the surface light source device 50 of the third embodiment, the LED light source substrate 140a is disposed on the upper left end of the light guide plate 120 , and the LED light source substrate 140b is disposed on the lower right end of the light guide plate 120 . That is, in the surface light source device 50 of ...

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PUM

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Abstract

A surface light source device (10) provided with a light guide plate (120) and a plurality of LED light source substrates (140) for emitting light into the light guide plate (120) from the side surface of the light guide plate (120). The LED light source substrates (140) are disposed on each of a set of sides of the light guide plate (120) that face each other, and are shorter than the length of the sides on which the LED light source substrates (140) are disposed.

Description

technical field [0001] The invention relates to an edge light type surface light source device and a lighting device. Background technique [0002] The edge-light type surface light source device using a light guide plate is widely used mainly as a backlight for liquid crystals. [0003] In the liquid crystal backlight, compared with the direct type backlight that does not use the light guide plate but arranges the light source directly under the liquid crystal panel, the linear light source is arranged at the edge and the light guide plate is used to convert it into a planar light emitting edge. Light-type surface light source devices are effective in reducing the thickness of backlight modules for liquid crystals and their applied products, and have become mainstream (for example, refer to Patent Document 1 below). In addition, in some cases, an edge-light type surface light source device is also used for illumination. [0004] Conventionally, a cold cathode tube (CCFL: ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21S2/00F21Y101/02
CPCG02B6/0068G02B6/0061G02B6/0055G02B6/0078G02B6/0021G02B6/0031G02F1/1336
Inventor 冈野昌伸隅谷宪
Owner SHARP KK
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