The subject innovation is as due to the contamination of the light cleaning device using the wind to prevent the problem that the signal can be distinctly indicated, more particularly, the rotational force by using a worm gear which is occurring in the wind rotor blades provided in the upper end of the light It will be delivered to the entire surface of the plate to the light-emitting light to an apparatus for decontaminating the front of the traffic light by the operation of the brush. Designed the To this end, the front of the wind rotate by rotating the wing for generating a rotational force, a portion for using a worm gear converting the direction of the rotational force generated by the wind blades, by the transformed rotational force of the operation the brush emission plate a transparent cover plate provided on the light emission is characterized by being a portion to remove an outer surface contamination. Light, worm gears, wind, and the light emitting plate, a brush