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Wide light evening light source module

A backlight, wide-width technology, applied in the field of wide-width uniform light backlight modules, achieves the effect of quick and simple positioning, soft light, and guaranteed light uniformity

Inactive Publication Date: 2008-05-14
刘俊波
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Used as a light source in conjunction with advertising light boxes

Method used

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  • Wide light evening light source module
  • Wide light evening light source module
  • Wide light evening light source module

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Embodiment 1: A reflective plate suitable for normal format.

[0032] The mirror-diffuse mixed reflection area is only composed of a mixed reflection surface 61, 62, 63, that is, the two sides of the mirror reflection surface 62 are respectively inward from dense to sparse, and a diffuse reflection with a multi-layer staggered sharp-toothed edge is attached. The diffuse reflection surface formed by uniform light strips 61, 63 is shown in Fig. 2 and Fig. 5 .

[0033] Or a diffuse reflective surface (not drawn) made of grid dots or multi-strip diffuse reflective strips.

Embodiment 2

[0034] Embodiment 2: It is suitable for wide-format reflective plates.

[0035] Increase the width of the mirror-diffuse mixed reflection area, add one or more diffuse reflection uniform light strips 64 in the original mixed reflection surface 61, 62, 63, and also appropriately widen the width of the diffuse reflection uniform light strip 63 to 63 ', forming mixed reflection surfaces 61, 621, 64, 622, 63', as shown in Fig. 4 and Fig. 6 , which can make the illumination of the display surface of the wide-format reflective plate more uniform.

[0036] As shown in FIG. 3 , part of the light emitted from the light source is reflected by specular reflections 51 , 52 , and 62 to diffuse reflection surfaces 71 , 72 , and 73 far from the light source 2 , and then diffused to the display surface 1 . The uniform light reflection cover 3 adjusts the amount of light directly irradiated from the light source to the display surface 1 through the transmission hole, and reflects part of the l...

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PUM

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Abstract

The invention relates to a backlight module with wide amplitude and even light, which can be used as light source by installing in lamp house by assembling one or a plurality of modules. The invention comprises a straight tube type light source, an even light reflection board with multi turning surfaces and an even light bowl. The reflection board with multi turning surfaces and even light respectively comprises a reflection area, a lens diffuse mixing reflection area and a diffuse reflection area from central line to two sides, and each reflection area is formed by one or more than one reflection surfaces, and positioned under the straight tube type light source. The even light bowl is positioned above the straight tube type light source, and provided with a rhomboidal beam orifice, and the edge is in randomly scattered tooth shape, and the face facing the light source is the lens reflecting surface, and the face facing the display surface is the diffuse reflection surface. The design of three areas solves the difficulty of reflected light distribution and control. Reflection ray can be reflected in a cross way in the distance by the even light bowl, and the light ray can be gentler. The effective use rate of the module reaches about 90 percent, wide amplitude reaches 500 to 600 mm, and lighting evenness reaches more than 90 percent. Moreover, the advertising light box thickness is controlled between 70 mm to 50 mm.

Description

technical field [0001] The invention relates to a direct-type backlight module, in particular to a single module or a combination of multiple modules installed in a light box or a wide light box to be used as a light source for an advertising light box, and can make the advertising light box energy-saving, with high brightness and good uniformity wide uniform light backlight module. Background technique [0002] With the development of the economy, advertising light boxes have become a form of media and have been widely used. Streets, alleys, shopping malls, supermarkets, various exhibitions, exhibitions, exhibitions, etc., are inseparable from advertising light boxes everywhere. The advertising light boxes used The number is huge, but most of the existing light boxes have a very low utilization rate of light, which causes a lot of waste of energy, and the uniformity of the light on the screen is also very poor, which directly affects the use effect of the advertising light ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02F1/13357F21V7/04G02F1/1335
CPCF21V7/005F21V7/22F21V7/0025F21Y2103/00F21S2/00F21V7/24F21V7/28
Inventor 刘俊波
Owner 刘俊波
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