Patent ID: 7021768

Claim:
A projection type display apparatus having a discharge lamp for supplying light and a light valve device, comprising: first and second air intake openings arranged on different sides of said apparatus, respectively; a centrifugal fan associated with said first air intake opening so as to draw in air from outside of said apparatus and form a first ventilation air flow from said first air intake opening to said light valve device through a lower side of said light valve device so as to cool said light valve device; a fan associated with said second air intake opening so as to draw in air from outside of said apparatus and form a second ventilation air flow so as to cool optical elements including lenses; an exhaust opening arranged on a different side of said apparatus from the sides of said apparatus on which said first and second air intake openings are arranged; and an exhaust fan arranged proximate to a discharge lamp so as to draw out air including said first and second ventilation air flow through said exhaust opening.