Advertising light box and method for controlling light source of same

Abstract

The invention relates to an advertising light box and a method for controlling a light source of same. The advertising light box is used for providing illumination for printing images, and comprises a light source with a plurality of light-emitting areas, a plurality of pieces of contrast information and a programmable light source controller, wherein the plurality of pieces of contrast information is determined according to the contents of an image to be printed, and each piece of contrast information corresponds to one kind of brightness contrast generated by a plurality of light-emitting areas. Therefore, the programmable light source controller can be used for driving the plurality of light-emitting areas to generate different brightness contrasts at different periods of time according to the plurality of pieces of contrast information.

Description

technical field [0001] The invention relates to an advertising light box, in particular to an advertising light box with programmable dynamic effects and a method for controlling the light source of the advertising light box. Background technique [0002] Advertising light boxes are mostly used for advertising or a few are used for landscape vision, beautifying living space, and increasing interior decoration changes. However, since the printed images on advertising light boxes are fixed patterns or lines, they cannot be changed, and their visual effects are more common. Monotonous and less able to attract the viewer's attention. On the other hand, the printed image is clearly visible during the day, but loses the effect of publicity and advertising at night. Therefore, the advertising light box is equipped with a light source, which projects the light on the back or front of the printed image, and can be clearly seen at night. The pattern on the printed image, however, the...

AI Technical Summary

Problems solved by technology

The use of fluorescent tubes has the following disadvantages: (1) The light source distribution of the advertising light box is uneven, and the area close to the lamp tube is often brighter, resulting in darker areas farther from the lamp tube; (2) The fluorescent tube consumes more power and has a longer lifespan. Short, the probability of damage is high; (3) The thickness of the fluorescent tube affects the volume of the advertising light box, which takes up more space

Therefore, the function of the LED is not fully utilized

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