| 摘要 |
PROBLEM TO BE SOLVED: To provide a fluorescent light source device which allows a fluorescent member to be cooled efficiently while allowing the fluorescent member to be held at an appropriate position with respect to a reflection mirror, and by which a high light output can be obtained stably over a long time period.SOLUTION: A fluorescent light source device includes: a fluorescent member that emits fluorescent light with an irradiation of excitation light; and a reflection mirror disposed in such a manner that the reflection surface thereof faces the excitation light receiving surface of the fluorescent member. In the fluorescent light source device, the fluorescent member and the reflection mirror are held by a common holding structure body comprising a thermally conductive material and having a thermal conduction portion formed so as to extend toward the central axis of a cylindrical base body portion from the internal peripheral surface of the base body portion. The fluorescent member is held so as to be positioned on the central axis of the base body portion on one side surface of the thermal conduction portion in the holding structure body, the one side surface facing the reflection surface of the reflection mirror.SELECTED DRAWING: Figure 2 |
