| 摘要 |
A light source apparatus (60) is disclosed which allows effective cooling of an arc tube (41) even with a small amount of wind. The light source apparatus has a light emitter (81) and a reflector (42) which reflects light from the light emitter and causes the reflected light to emerge. The light source apparatus also has a wind-guiding member which has a flow inlet (2a) and a flow outlet (2b,2c) of cooling wind and has a wall portion (87) at a position opposite to the flow inlet, the wall portion guiding the cooling wind toward the light emitter in the reflector. The light source apparatus has a reflector (42) to which an arc tube (41) is fixed via a connecting member, and has a first flow path on which cooling wind from a fan (14) flows to cool an area of the arc tube closer to the connecting member, and a second flow path on which cooling wind from the fan flows to cool an area of the arc tube closer to a light emitting portion. The second flow path is formed separately from the first flow path. |
