Arc-shaped surface light-emitting lamp box

Abstract

The invention belongs to the technical field of light-emitting lamp boxes and particularly relates to an arc-shaped surface light-emitting lamp box. The lamp box comprises a supporting frame, a light-emitting panel and a lamp bar assembly. The supporting frame is in an arc surface shape. The light-emitting panel is in the arc shape matched with the arc surface of the supporting frame, the problemthat the use occasion is blocked is effectively solved, the lamp box can be very thin, the light-emitting efficiency is high, the brightness uniformity is high, the color consistency is good, the backlight source emits light, and the problems of glare, residual light pollution, picture display distortion and the like are effectively solved; the lamp box adopts a side light-emitting scheme, so thathigher light output efficiency can be realized, and the uniform illumination of the whole arc-shaped plane can be ensured, and therefore, the illumination application of a light-emitting advertisement picture with a high display effect can be realized without using a very high-power LED lamp; and a light source part which is easy to fail is designed in a quick-replaceable manner, so that the reliability of the LED lamp bead can still be ensured when the PMMA light guide plate is heated to expand, and the lamp box can be applied to a place with higher temperature.

Description

technical field [0001] The invention relates to the technical field of luminous light boxes, in particular to an arc-shaped surface luminous light box. Background technique [0002] Light box advertisement is also known as "light box poster" or "Yingming poster". The outer frame of the light box is made of aluminum alloy or stainless steel, the surface of the box is made of plexiglass, and a fluorescent tube or neon tube is installed inside. The picture is usually a photographic film. Applied to roads, both sides of streets, and public places such as film (drama) theaters, exhibition (marketing) fairs, commercial downtown areas, stations, airports, docks, parks, etc. [0003] At present, the light sources of large-scale advertising screens in the same industry are mainly planar light sources, and in the case of light sources around the cylinder, the light bars are evenly arranged on the bottom layer, and the canvas is far away from the light source. This method of use not o...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an arc-shaped surface light-emitting light box to solve the problem that the light-emitting source proposed in the above-mentioned background technology is mainly a planar light-emitting body, and in the case of a cylindrical light-emitting source, uniformly arranged light strips are used on the bottom layer. The canvas is far away from the light source, which limits the thickness of the canvas light box, and the power of the light source is large, the installation is complicated, the maintenance cost is high, and there is no real problem of energy saving and emission reduction.

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