Backlight unit and light-emitting module of spliced module lamp box

Abstract

The invention relates to a backlight unit and a light-emitting module of a spliced module lamp box. The backlight unit is composed of an integrated lens module mounted along a light source module andthe light source module, wherein the integrated lens module is composed of a lens substrate, a plurality of light inlets arranged on the rear side of the lens substrate and uniformly distributed according to an array, concave spherical surfaces on the bottoms of the light inlets, a plurality of first bolt base columns arranged on the rear side of the lens substrate, having certain intervals, and distributed on the rear side of the substrate, and second bolt base columns on the rear side of the substrate, the light source module is mounted at the rear side of the lens substrate, so that light sources are placed at the light inlets, and screw fixing is realized by the first bolt base columns on the rear side of the substrate. The light-emitting module comprises the backlight units, and further comprises a box, the plurality of backlight units are mounted on the front side of the box in a splicing manner according to an array, screw fixing is realized through screw holes in the mounting face and second bolt base column bolts on the rear side of the substrate, and thus the light-emitting module is formed. The backlight unit and the light-emitting module have the advantages that the light emission is uniform, the maintenance is convenient, etc.

Description

technical field [0001] The invention relates to the field of light boxes, in particular to a backlight unit and a light emitting module of an assembled modular light box. Background technique [0002] As we all know, there are two types of mainstream advertising light box structures: one is a light box with a side-type backlight structure, which is mainly composed of a light guide plate and a light source. Due to the limitation of light guide distance, the light box with side-type backlight structure is suitable for products with small light-emitting area, such as small-sized decorative paintings, window displays, flat panel lighting, etc. However, the two sides of the light guide plate Or there are light sources around, so that there are dark areas caused by the light source body on both sides or around the light guide plate, and shadowless splicing cannot be realized. The other is a light box with a direct backlight structure, which is mainly composed of a panel, a light ...

AI Technical Summary

Problems solved by technology

[0002] As we all know, there are two types of mainstream advertising light box structures: one is a light box with a side-type backlight structure, which is mainly composed of a light guide plate and a light source. Due to the limitation of light guide distance, the light box with side-type backlight structure is suitable for products with small light-emitting area, such as small-sized decorative paintings, window displays, flat panel lighting, etc. However, the two sides of the light guide plate Or there are light sources around, so that there are dark areas caused by the light source body on both sides or around the light guide plate, and shadowless splicing cannot be realized

The other is a light box with a direct backlight structure, which is mainly composed of a panel, a light source and a box body. The panel is installed on the front side of the box body, and the light source is installed on the back side of the box body. Therefore, the thickness of the light box of the direct-type backlight structure is much larger than that of the side-type backlight unit. Because it has the advantages of high brightness and strong controllability of the light source, the application of the direct-type backlight unit is extremely wide, such as Advertising light boxes, signboard light boxes, signboard light boxes and window light boxes, etc. However, the box of the direct-down backlight unit is surrounded by opaque box walls, and serious shadows will appear between the boxes after splicing. Unable to achieve shadowless splicing

It can be seen from the above that the current mainstream advertising light boxes are limited to small-format light boxes. Therefore, the existing large-format advertising in the field of outdoor advertising communication is still stagnant in the four mainstream outdoor carriers of inkjet advertising, three-sided advertising, LED display advertising and luminous character advertising.

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