Arc-shaped surface light-emitting lamp box

A curved surface, light box technology, applied in instruments, display devices, illuminated signs, etc., can solve the problems of not really achieving the effect of energy saving and emission reduction, limiting the thickness of the canvas light box, and high power of the light source, and achieving color consistency. Good, high brightness uniformity, uniform illumination effect

CN111508388AInactive Publication Date: 2020-08-07SHENZHEN MINKAVE TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2020-08-07
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Examples

Embodiment

[0025] see Figure 1-4 , the present invention provides a technical solution: an arc-shaped light box, including a support frame 1, a light-emitting panel 2 and a light bar assembly 3, the support frame 1 is arc-shaped, and the light-emitting panel 2 is in the same arc shape as the support frame 1 The adapted arc shape makes the light-emitting panel 2 close to the surface of the support frame 1. Through the design of the PMMA light-guiding light-emitting panel, the light from both sides can be effectively controlled by the principle of reflection and refraction, so that the entire arc The light-emitting surface emits light evenly, the light-emitting panel 2 is stuck on the support frame 1, and the two light bar assemblies 3 are stuck on both sides of the light-emitting panel 2, and the light-emitting panel 2 is fixed by connecting the two light bar assemblies 3 with the support frame 1 effect;

[0026] The light-emitting panel 2 is stuck on the outer wall of the support frame...