Modular lamp box

Abstract

The invention relates to a modular lamp box. The modular lamp box is formed by assembling a plurality of light-emitting modules according to an array, each light-emitting module comprises the backlight units, a box body and a power supply, and the plurality of backlight units are mutually spliced and mounted on a box body mounting surface at the front side according to an array and are in power supply connection with the power supply; each backlight unit is composed of an array cavity shell, a mask and a light source module, the mask is arranged at the front side of the array cavity shell andis in direct insertion connection with a shell connecting port through a mask connecting tongue-and-groove, and the light source module is installed at the rear side of the array cavity shell. A lightsource at the front side of the light source module is arranged in a lamp hole in the basin-shaped cavity and is fixed through a first screw base column screw at the rear side of the shell, and the backlight unit is fixed through a second screw base column screw at the rear side of the shell. The modular lamp box has the advantages of being uniform in light emitting, simple in structure and beingconvenient to install and maintain.

Description

technical field [0001] The invention relates to the field of light boxes, in particular to a modular light box. Background technique [0002] As we all know, light boxes have a wide range of applications, which involve construction, industry, lighting, civil, commercial, medical, advertising, transportation and other special purposes. Among them, the application in the field of advertising communication is the most widely used, mainly including panel light boxes, cloth light boxes, crystal ultra-thin light boxes and plastic ultra-thin light boxes, mirror induction ultra-thin light boxes, magnetic suction ultra-thin light boxes, dynamic light boxes, etc. [0003] For light boxes in the field of advertising communication, there are mainly two 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. The light source is installed on the side of the light guide plate and at the bottom of the light gu...

AI Technical Summary

Problems solved by technology

[0003] For light boxes in the field of advertising communication, there are mainly two 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. The light source is installed on the side of the light guide plate and at the bottom of the light guide plate There are engraved or printed light guide points. 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, such as small-sized decorative paintings, window displays, flat panel lighting, etc. However, There are light sources on both sides or around the light guide plate, 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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