Patent ID: 8317335

Claim:
A projection type video display for displaying a video by projecting light that is emitted from a lamp serving as a light source and modulated on the basis of a video signal, said video display having lamp cooling means for cooling said lamp, said projection type video display, comprising: detection means for detecting the startup status of said lamp in a startup operation; and control means for controlling said lamp cooling means in accordance with said startup status detected by said detection means, wherein the control means monitors voltage, continues feeding power to the lamp even when the voltage exceeds the prescribed voltage and, at the same time, activates the lamp cooling means when the voltage exceeds the prescribed voltage, and wherein said lamp cooling means remains disabled for a predetermined period from a beginning of said startup operation to until the startup status of said lamp reaches a specified value and wherein said detection means having a function of driving the lamp as well as a function of providing a voltage information on a voltage applied to the lamp and provide the voltage information to the control means so as to ensure said lamp cooling means is not enabled before the voltage reaches said specified value.