| 主权项 |
1. A light source device comprising:
an arc tube having a light emission portion for emitting light; a reflector that reflects the light toward an illumination receiving area with the arc tube fixed to the reflector; and a housing that houses the reflector to form a space through which cooling air for cooling the arc tube flows, wherein
the housing has three delivery ports disposed side by side as ports from each of which the cooling air is delivered toward the direction of the light emission portion,a first delivery port included in the three delivery ports is located such that the center of the first delivery port is disposed substantially at a position aligned and runs parallel to the optical axis of the arc tube,second and third delivery ports included in the three delivery ports disposed in the vicinity of one and the other sides of a first delivery port, respectively, with respect to the optical axis,the second and third delivery ports are inclined toward the optical axis side as close to the arc tube, andthe housing having another set of three delivery ports in addition to the set of the three delivery ports provided on the housing, the two sets of the three delivery ports being disposed substantially symmetric with respect to the optical axis. |
