Patent ID: 6398366
Filing Date: 2002-06-04
Classification: G03B,H04N

Abstract:
A display apparatus of the projection type, comprising:an optical unit including a light source and optical modulation means for modulating light outputted from said light source with an image signal inputted thereto; cooling means including an air blasting fan for blasting cooling air blasted from said air blasting fan at least to said light source to cool said light source; an outer housing in which said optical unit and said cooling means are incorporated; and a lamp box removably mounted in said outer housing and having said light source accommodated therein; said lamp box including a transparent protective member disposed adjacent a light output port of said light source, said lamp box having a cooling air intake port for taking in cooling air from said cooling means to said light source, said lamp box further including automatic opening/closing means provided adjacent said cooling air intake port for automatically opening said cooling air intake port when said lamp box is mounted into said outer housing but automatically closing said cooling air intake port when said lamp box is removed to the outside of said outer housing.