A positive light billboard device

A billboard, positive light technology, applied in display devices, light guides, optics, etc., can solve the problems that the size and shape cannot meet the lively advertising lighting, the uniformity of the light source is difficult to control, and the light utilization efficiency is low. Afterglow glare, low stray light effect

Inactive Publication Date: 2011-12-28
秦厚敬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally speaking, the light utilization efficiency of the backlight type lighting is low, about 10~20%. The uniformity of the large-size surface light source is difficult to control, the cost is high, and the size and shape cannot meet the lively characteristics of advertising lighting.

Method used

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  • A positive light billboard device
  • A positive light billboard device
  • A positive light billboard device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] refer to figure 1 , 2 , 3. This embodiment includes a linear light source 1, a light guide plate 2, and the light guide plate 2 connects to the advertising drawing 6 through the surface of the transparent bump 5 without gaps; On the front of 6, the position of the transparent bump 5 is the outlet of the light in the light guide plate 2, and the distribution coating 7 of the transparent bump matches the content pattern of the advertisement drawing 6, producing a partially emphasized lighting effect.

[0027] The distribution, dot pitch, and height of the transparent bumps 5 can be varied depending on the artist's desired display effect, and there is no specific limitation.

[0028] One end surface 31 of the light guide plate 2 is provided with a linear light source 1, and the other end surface 32 is covered with reflective stickers 4; the linear light source 1 is formed by an arrangement of LED light sources (but not limited thereto).

[0029] The linear light source ...

Embodiment 2

[0031] refer to Figure 4 , this embodiment includes a light guide plate 2, a reflective LCD panel 10, and the transparent bump coating 11 is a macroscopic presentation of the fine transparent bumps printed on the light guide plate 2, with a gradient effect in which the center is dense and gradually loosens around, The linear light source 1 injected laterally can be compensated to form a uniform LED positive light plate 20 , and then positively contact the reflective LCD panel 10 to form an LCD billboard 30 illuminated by LED positive light.

[0032] Transparent bump coating 11, wherein the pitch of the transparent bumps in the central area of ​​the light guide plate 2 is set to 0.15mm, then a better visual effect can be obtained, and the pitch of the transparent bumps in the edge area of ​​the light guide plate 2 is set to 0.30mm, transparent The attenuation of the side light source can be compensated by a simple and gradual distribution of the convex points, so as to obtain ...

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PUM

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Abstract

A positive light billboard device, which includes a light guide plate and a billboard. At least one end surface of the light guide plate is equipped with a light source. The light guide plate is connected to the surface of the billboard through transparent bumps without gaps. Totally reflected light is guided to the front of the billboard through the transparent bumps, and the position of the transparent bumps is the outlet of the light in the light guide plate. The present invention directly contacts the billboard in the form of light guide points, and can do multi-point precise selective lighting, reduce interface light loss, reduce stray light, increase black and white contrast, improve optical efficiency and reduce manufacturing and use costs. The billboards are replaced by ordinary billboards, and the present invention can also be used as indoor general lighting fixtures such as table lamps and wall lamps.

Description

technical field [0001] The invention relates to a positive light billboard device, in particular to a positive light billboard device used for lighting advertisement printed matter or LCD liquid crystal panels in small areas of daily life. Background technique [0002] The common backlight lighting mode takes the acrylic advertising light box as an example. Most of the fluorescent tubes are installed in the light box, and semi-transparent materials such as atomized acrylic sheets are used as the side panels of the light box to achieve a uniform light source effect. As a backlight for transparent advertising patterns or text, this type of backlight light box has uniform, mild light and high environmental compatibility. Fluorescent tube-type backlighting has a light utilization efficiency of only about 10%, which is an advertising product that consumes a lot of energy and contains mercury. The appearance of box-type lighting lacks changes, and the location and size are not ea...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G09F13/18G09F13/22F21V8/00
CPCG09F13/18
Inventor 秦厚敬
Owner 秦厚敬
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