Projection-type image display device with cooling mechanism

Details Projection-type image display device with cooling mechanism Projection-type image display device with cooling mechanism

2011-08-23

2011-08-23

Epps, Georgia Y (Department: 2878)

Optics: image projectors

Temperature control

Liquid coolant

C353S052000

Reexamination Certificate

active

08002415

ABSTRACT:
A projection-type image display device generates projection light by modulating light beams of at least three primary colors in accordance with image information and synthesizing the modulated light beams. The display device includes a light source unit constituted by arranging a plurality of light source elements each having light source arrays being arranged on heat receiving plates respectively so as to conduct the light beams of the colors to irradiation surfaces of a synthesizing prism, a refrigerating unit including at least a refrigerant compressor, a condenser, a pressure reducing unit and a refrigerant pipe constituting an evaporator, and an air cooling device lower in cooling capacity than the refrigerating unit. Of the plural light source arrays, those relatively large in the amount of heat generated are connected to the refrigerating unit, while the others are connected to the air cooling unit.

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