Backlight units and light-emitting modules of easy-to-maintain modular light box

Abstract

The invention relates to backlight units and light-emitting modules of an easy-to-maintain modular light box. The backlight units are composed of integrated lens modules achieving light source moduleinstallation and light source modules; the integrated lens modules comprise multiple basin-shaped entities distributed according to an array, light incident openings formed in the rear sides of the basin-shaped entities, concave spherical surfaces at the bottoms of the basin-shaped entities, first screw base columns and second screw base columns; the light source modules are installed on the backsides of the integrated lens modules, and light sources on the front sides of the light source modules are placed at the light incident openings of the lens modules and fixed through the first screw base columns by means of screws. The light-emitting modules comprise the backlight units, box bodies and switching power supplies; the backlight units are installed on the front sides of the box bodiesaccording to the array and are electrically connected with the switching power supplies; in the light-emitting module splicing process, obvious dark lines cannot appear. According to the backlight units and the light-emitting modules, not only can splicing be achieved, but also the backlight units and the light-emitting modules have the advantages of being uniform in light emitting, simple in structure, convenient to install and maintain and the like.

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 easy-maintenance 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...

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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