Apparatus for cooling heat generating spot of electronic device, cooling method therefore, and liquid crystal projector apparatus

摘要

A cooling apparatus for a liquid crystal image display having a liquid crystal unit includes an incident-side polarizing plate, a liquid crystal panel and an exit-side polarizing plate. The incident-side polarizing plate, the liquid crystal panel and the exit-side polarizing plate are disposed side by side with a gap therebetween to have the same in-plane direction. A first cooling unit feeds an air stream in an orientation of the in-plane direction, and a second air cooling unit feeds an air stream in the in-plane direction in a different orientation from the air stream by the first air cooling unit. The first air cooling unit and the second air cooling unit are set such that the first and second air stream collide with each other between the incident-side polarizing plate and the liquid crystal panel and/or between the liquid crystal panel and the exit-side polarizing plate.