Projection image display apparatus
A light source disposed in a projector is cooled by use of a coolant. A cooling unit is disposed in a region that is spatially separated from at least an optical unit and an electrical circuit unit. In addition, piping between the cooling unit and a cooling member is separated from wiring from the electrical circuit unit.
1. A projection image display apparatus, comprising:
an optical unit for modulating and projecting light from light source;
a cooling unit for circulating a coolant into a cooling member arranged in the optical unit;
an electrical circuit unit for electrically controlling each part, wherein
the cooling unit is disposed in a region that is spatially separated from at least the optical unit and the electrical circuit unit;
a cabinet including at least one partition which defines at least a first, second and third area,
wherein the first area contains all components of an optical unit, the second area contains all components of a cooling unit, and the third area contains all components of an electrical circuit unit.
2. A projection image display apparatus according to claim 1 , wherein
the cooling unit, the optical unit and the electrical circuit unit are arranged with partitions therebetween in horizontally separated regions.
3. A projection image display apparatus according to claim 1 , wherein the cooling unit, the optical unit and the electrical circuit unit are arranged with partitions therebetween in vertically separated regions.
4. A projection image display apparatus according to claim 3 , wherein
the cooling unit is placed in one of the vertically separated regions which is lower than those of the optical unit and the electrical circuit unit.
5. A projection image display apparatus according to claim 4 , wherein the electrical circuit unit is placed vertically farther from the cooling unit than the optical unit.
6. A projection image display apparatus according to claim 1 , further comprising: a drip pan for receiving the coolant leaking from the cooling unit.
7. A projection image display apparatus according to claim 1 , wherein piping is installed between the cooling unit and the cooling member such that the coolant does not run over at least the optical unit and the electrical circuit unit.
8. A projection image display apparatus according to claim 1 , wherein the piping between the cooling unit and the cooling member is separated from wiring from the electrical circuit unit.
9. A projection image display apparatus according to claim 1 , further comprising:
a leakage detection part for detecting leakage of the coolant.