The invention belongs to the field of indication equipment capable of changing information and provides a self-cleaning
insect repelling advertisement lamp box, aiming to solve problems in the prior art that the advertisement lamp box cannot illuminate and dissipate heat timely when working for long time and attracts insects when illuminating for long time. According to a basic solution, a
water storage groove is arranged at the top of a shell of a lamp box, a limiting hole is arranged at the bottom of the
water storage groove, a press spring and a
piston are arranged at the bottom of the limiting hole from top to bottom in sequence, a water outlet hole communicated with the lower part of the limiting hole is arranged on the rear wall of the shell, the thickness of the
piston is less thana distance between the highest point of the water outlet hole and the lowest point of the
water storage groove, the water outlet hole is communicated with the top of a creased air bag hung on the rearwall of the shell, slide grooves are respectively arranged at two sides of the air bag, a conversion rod arranged at the bottom of the air bag stretches into the slide grooves, a
copper wire is coiled at a position, corresponding to an
insect repelling lamp or a reinforcing lamp between the two slide grooves, on the conversion rod, an end of the conversion rod is vertically connected with a rack,a scroll for
scrolling light transmitting canvas can rotate in the box body, and a gear fixedly connected at the end of the scroll is meshed with the rack.