Patent ID: 8651668

Claim:
A liquid-cooling device configured to cool down a cooling target in a projector using cooling liquid, the liquid-cooling device comprising: a liquid storage unit having a storage unit body that temporarily stores the cooling liquid therein; an inflow portion provided in the storage unit body, the inflow portion configured to allow the cooling liquid to flow into the storage unit body from the outside; and an outflow portion provided in a surface of the storage unit body, the outflow portion configured to allow the cooling liquid stored in the storage unit body to flow out to the outside of the storage unit body in a direction substantially orthogonal to a direction in which the cooling liquid flows into the inflow portion of the storage unit body, wherein the liquid storage unit is disposed such that the cooling liquid flows out of the outflow portion in a direction substantially orthogonal to a projection direction of an image from the projector and substantially parallel to a horizontal plane, the outflow portion is provided at a position where a height from a lower surface portion of the storage unit body is less than half of a height from the lower surface portion of the storage unit body to an upper surface portion thereof, the outflow portion is provided at a position adjacent an end of the surface of the storage unit body in the height direction, and the outflow portion is provided at a substantially central position in the widthwise direction of the storage unit body along the projection direction.