| 摘要 |
An object of the invention is to provide a light source of a projector apparatus used in floor use and ceiling use, wherein in either use, a discharge lamp and a concave reflecting mirror can be efficiently and sufficiently cooled. A light source apparatus for a projector capable of being used in a floor use and in a ceiling use, comprises a discharge lamp having a neck portion and a light emitting portion, a concave reflecting mirror having a neck portion, in which the discharge lamp is disposed in the neck portion of the concave reflecting mirror, and a ventilation member having at lease one ventilation opening in which cooling air from the upper side ventilation opening passes along the light emitting portion of the discharge lamp so as not to directly blow the light emitting portion and directly blows a mirror face of the concave reflecting mirror.
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