| 摘要 |
PROBLEM TO BE SOLVED: To provide a video projecting device where the intrusion of dust or the like is prevented. SOLUTION: This is a video projecting device by which a video displayed on a liquid crystal display panel 7... is magnified and projected by a light source 1 and a projection lens 18 and displayed on a screen. Then, an air path shielded from the outside is formed in an optical engine case 20, and the liquid crystal panel 7... and the light source 1 are arranged inside the air path, and the liquid crystal panel 7... and the light source 1 are cooled by circulating cooling air inside the air path.
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