| 摘要 |
PURPOSE: A device for cooling of a projector is provided to increase a local heat transfer coefficient by forming a pulsating flow, thereby improving the cooling performance. CONSTITUTION: A device for cooling of a projector includes a rotating part(310) rotating in an axial direction and reciprocating backward and forward in the axial direction, thereby generating a pulsating flow for cooling; a cover part(320) making a passage while fixing the rotating part; and a driving part(330) forming the rotation and reciprocation of the rotating part; wherein an object to be cooled is a liquid crystal projector; and the pulsating flow according to the reciprocation by the driving part is periodically achieved.
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