Transmission-type backlight source LED light box dodging device and light box

Abstract

The invention provides a transmission-type backlight source LED light box dodging device. The light box comprises a picture supporting plate, a plurality of LEDs and reflectors, wherein the picture supporting plate is arranged in the display direction of the light box; the LEDs are arranged in the light box; the reflectors are arranged among the LEDs; the dodging device is arranged in the display direction of the light box; and the dodging device is provided with a dodging structure in the position corresponding to the LEDs, and used for shielding rays emitted by the LEDs and dredging the rays to the surroundings. The invention also provides a light box with the dodging device. The dodging device can eliminate dark areas on the picture of the light box, and enhance the lighting uniformity on the display surface of the light box, so that rays are uniformly and softly irradiated on the picture supporting plate.

Description

technical field [0001] The invention relates to a uniform light device for lighting equipment, in particular to a transmission type backlight source LED lamp box uniform light device; also relates to a light box with the above light uniform device. Background technique [0002] The light source of the traditional advertising light box mostly adopts several light tubes arranged in parallel. As an improvement to the traditional light box, LEDs are now used as the backlight of the transmissive light box. However, because there is a certain distance between the LED light sources, when in use, the light box picture will also have discontinuous or uneven light, that is, there are dark areas between the LED light sources, which will affect the display effect of the light box picture . [0003] For the light box using the light tube as the light source, in order to eliminate the rib pattern phenomenon, the applicant has made various improvements to the traditional light box, includ...

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Problems solved by technology

[0004] The above improvements have played a certain role in improving the display effect of the light box, but for the light box with LED as the light source, because the LED light source is different from the light source of the lamp tube, the above improvement scheme cannot be directly applied to the light box with LED as the light source to eliminate the light box screen. dark area

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