Patent ID: 7766484

Claim:
A structure for cooling a lamp used for a projection type display apparatus, said structure comprising: a lamp house for housing a lamp that is operable as a light source, said lamp house being configured to be installed in a housing of said projection display apparatus, said structure consisting of a fan for supplying cooling air into said lamp house, wherein said lamp house comprises a removable lamp house cover, said fan and said removable lamp house cover being placed on opposite sides of said lamp, wherein an exhaust duct for said cooling air is integrated with said lamp house cover, said cooling air exiting to outside of the display apparatus from said lamp house cover, wherein said lamp comprises a bulb, a cathode, and an anode, said cathode and said anode being located on both sides of said bulb, respectively, wherein said lamp house has a pair of intake ports for receiving cooling air from said fan, wherein said intake ports are formed at locations on a side surface of said lamp house, said side surface being in a direction facing away from said lamp house cover, wherein said locations are different in elevation and face said cathode and said anode, respectively; wherein said exhaust duct has a pair of openings as inlets of said exhaust duct, said openings being formed at locations which correspond to said cathode and said anode, respectively, and wherein said housing has an exhaust port for said cooling air, said exhaust port being formed near an outlet opening of said exhaust duct.