| 摘要 |
A projection-type image display device includes three light sources respectively configured to emit a different colored outgoing light, a light combining unit configured to combine outgoing lights, and a projection unit configured to project a combined light combined by the light combining it. The projection-type image display device includes a first cooler configured to cool a first light source of the three light sources, and a second cooler configured to cool a second and a third light source of the three light sources except the first light source.
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