Backlight unit of uniformly light-emitting module lamp box

Abstract

The invention relates to a backlight unit of a uniformly light-emitting module lamp box. The backlight unit comprises a basin-shaped box body, a lens module, a panel and a light source module, whereinthe basin-shaped box body is used for mounting the light source module. The basin-shaped box body comprises a plurality of uniformly arrayed lamp holes, a box body connecting rabbet, a first screw foundation pillar and a second screw foundation pillar, wherein the lamp holes are formed in a box body bottom plate, the first screw foundation pillar is arranged on the rear side of the bottom plate,and the second screw foundation pillar is arranged on the bottom plate. The lens module comprises a lens and is mounted on the front side of the box body bottom plate, so that lens light inlets on therear side of the lens can be matched with the lamp holes in the bottom plate. The panel is mounted on the front side of the basin-shaped box body and connected with the box body connecting rabbet ina directly inserted manner through a panel connecting rabbet. The light source module is mounted on the rear side of the bottom plate, so that light sources on the front side of the light source module are exactly placed on the rear sides of the lamp holes in the bottom plate. The backlight unit has the advantages of light-emitting uniformity, simple structure, convenience in installation and maintenance and the like.

Description

technical field [0001] The invention relates to the field of light boxes, in particular to a backlight unit of a modular light box with uniform light emission. Background technique [0002] As we all know, light boxes are widely used, and it involves the construction field, industry field, business field, medical field, advertising communication field, etc., among which the advertising communication field is the most extensive. [0003] At present, there are mainly two types of advertising light box structures: one is a light box with a side-entry backlight structure, which is mainly composed of a light guide plate and a light source. A light guide point. Due to the limitation of light guide distance, the light box with side-type backlight structure is suitable for products with a small light-emitting area. Commonly used in small-scale decorative paintings, window displays, panel lighting, etc. However, light sources are provided on both sides or around the light guide pl...

AI Technical Summary

Problems solved by technology

However, the cabinet of the direct-lit backlight unit is surrounded by opaque cabinet walls, and serious shadows will appear between the cabinets after splicing. Therefore, shadowless splicing cannot be realized.

As can be seen from the above, the current mainstream advertising light boxes are limited to small format light boxes

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