Patent ID: 7226170

Claim:
A projector with air cleaning functionality, comprising: a lamp module comprising a reflective lamp shade and a projecting light bulb, wherein the reflective lamp shade collects the light emitted from the projecting light bulb to emit visible light, and the projecting light bulb also radiates invisible ultraviolet (UV) light penetrating through the reflective lamp shade; an optics processing part for using the light emitted from the lamp module to project an image signal onto a screen; a cooling device for guiding air outside the projector into the projector through an air inlet as cooling air to absorb heat generated inside the projector and sending heated cooling air out of the projector through an air outlet so as to form a cooling air route; and a photo catalyst material, disposed inside the projector, the lamp module being positioned between the photo catalyst material and the air outlet along the cooling air route and the photo catalyst material being adjacent to the lamp module, wherein the UV light emitted by the projecting light bulb shines on the photo catalyst material.