| 摘要 |
PROBLEM TO BE SOLVED: To provide a projector in which air can be easily removed from a circulation flow passage.SOLUTION: The projector includes: a pressure-feed part (pump 63) disposed on a circulation flow passage of a cooling liquid to which heat of a cooling target is conducted, and pressurizing and feeding the cooling liquid; a reservoir (tank 62, 71) disposed on the circulation flow passage and reserving the cooling liquid; a supply part (connecting part CN) disposed on the circulation flow passage and capable of supplying the cooling liquid to the circulation flow passage; and a discharge part (connecting part CN) disposed on the circulation flow passage and capable of discharging air from the circulation flow passage to the outside. When the cooling liquid is supplied to the circulation flow passage via the supply part, the pressure-feed part (pump 63) circulates the cooling liquid in the circulation flow passage in an opposite direction to a circulation direction in a normal operation.SELECTED DRAWING: Figure 3 |
