Patent ID: 7857491

Claim:
A cooling system for a projector for dissipating heat output by at least one of a light source, optical components, and electrical and electronical components, wherein the projector comprises a projector housing with a lamp housing and a base tray, said cooling system comprising: a first cooling device guiding a first convection flow and a second convection flow, said first convection flow being guided through an interior space of the base tray and the lamp housing, said second convection flow circulating at least partially in a circumferential direction around the lamp housing, and said first cooling device comprising a jacket flow guide plate which is arranged in the lamp housing and which comprises a section with first openings; and a second cooling device for a cooling air flow which is substantially directed parallel to an optical axis of the projector and perpendicular to said second convection flow, said second cooling device comprising cooling ducts which are arranged in the lamp housing around the jacket flow guide plate radially spaced apart, said cooling ducts being oriented substantially parallel to the optical axis of the projector, said second cooling device further comprising second openings between said cooling ducts for the passage of said first and second convection flows, and said second openings extending substantially parallel to the optical axis of the projector leading from a front face to a rear face of the lamp housing.