| 摘要 |
A cooling system for a video projector having a high degree of cooling efficiency and preventing an operator from being exposed to hot exhaust air. The system having a case; an intake formed on the case; an outlet formed on the case; a radial fan having an intake side and an exhaust side communicated with the outlet, for blowing air in a direction orthogonal to a rotary shaft thereof; and a cooling duct having an opening opened to a component to be cooled therearound located in the case, and another opening communicated with the intake side of the radial fan. The radial fan induces a negative pressure in the case so as to take a cooling air from outside into inside of the case and to lead the cooling air so as to pass around the component to be cooled before it is directly led into the radial fan through the cooling duct in order to discharge the cooling air outside of the case.
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