The utility model relates to the technical field of projectors, and discloses a
projector with a self-cleaning function and good heat dissipation performance, which comprises an outer shell of the
projector, an LED
light source, a
luminous flux cover, a first
Fresnel lens, a display screen and a second
Fresnel lens are sequentially arranged in the outer shell from back to front, a lens is fixedly installed on the front side of the outer shell, and an optical
machine cavity is formed between the second
Fresnel lens and the lens. The heat dissipation device further comprises a cross flow fan and a heat dissipation cover plate. A cross-flow fan is fixedly installed in the middle of the lower side of the outer shell, and a heat dissipation cover plate corresponding to the cross-flow fan is fixedly installed on the top of the outer shell. An
air blower, an air outlet duct and a heat dissipation plate; an
air blower is fixedly installed on the right side of the outer shell, an air outlet channel fixed to the outer shell is arranged on the rear side of the
air blower, and a heat dissipation plate fixed to the rear side of the LED
light source is arranged at the
tail end of the air outlet channel. Compared with the prior art, the heat dissipation device has the advantages that when the heat dissipation device is used, the heat dissipation effect is better, the heat dissipation efficiency is higher, and the first Fresnel lens, the display screen and the second Fresnel lens in the heat dissipation device can be automatically dedusted.