Broad width light evening backlight source module and backlight source applying the module

Abstract

The invention relates to a wide light evening backlight module, which comprises a line light source (2), a light evening reflective plate (4) and a reflex housing (3), wherein the line light source (2) is arranged between the light evening reflective plate (4) and the reflex housing (3). The wide light evening backlight module is characterized in that the light evening reflective plate (4) is provided with mirror reflecting zones (51 and 52), mirror diffuse mixed reflecting zones (6 and 6') and diffuse reflecting zones (71, 72 and 73), wherein the mirror reflecting zones (51 and 52) are positioned on a central position of the light evening reflective plate (4); the longitudinal direction of the mirror reflecting zones (51 and 52) is basically parallel to the line light source (2); two sides of the mirror reflecting zones (51 and 52) are provided with the mirror diffuse mixed reflecting zones (6 and 6') respectively; and the outside of at least one of the mirror diffuse mixed reflecting zones (6 and 6') is provided with the diffuse reflecting zones (71, 72 and 73). The wide light evening backlight module improves the light evening effect and light utilization rate through reasonable division and arrangement of the reflecting zones of the light evening reflective plate, thereby the distribution and control problems of reflex are effectively solved and a wide reflective plate can also guarantee illuminating evenness degree of a display surface.

Description

technical field [0001] The invention relates to a backlight source module, in particular to a single module or a combination of multiple modules installed in a light box or a wide light box for use as a backlight 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 boxe...

AI Technical Summary

Problems solved by technology

Because the existing technology cannot solve the problem of high-efficiency reflection and uniform light in a wide format, the problems of low light utilization rate and large energy waste of light boxes have not been well solved.

How to improve the light uniformity effect and light utilization rate by rationally dividing and arranging each reflection area of ​​the uniform light reflector, there is no special document published at present

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