Patent ID: 7506986

Claim:
In a projection type video display that optically modulates light emitted from a light source by a display device and projects a video, a projection type video display characterized in that said light source has a lamp and a concave reflector which reflects light from the lamp and the reflector is made of a metal selected from the group consisting of iron, copper and stainless steel wherein at least a surface of the reflector which reflects light from the lamp is coated with aluminum, wherein said reflector includes a hole for insertion of said lamp, said hole being formed on a rear end of said reflector, wherein said hole includes a gap for ventilation, wherein a mounting structure is formed on an outer surface of an edge of light exit side aperture of said reflector, wherein said mounting structure is an engaging part formed in said reflector itself as a part of said reflector, and wherein said engaging part includes a thread part.