Patent ID: 7654698
Filing Date: 2010-02-02
Classification: F21V,G02F,H01J

Abstract:
1. A light source device comprising: a discharge tube; straightly elongated in a longitudinal direction a reflector to reflect a light radiated from said discharge tube; a support member arranged at a position near an electrode of said discharge tube to support said discharge tube at a prescribed position with respect to said reflector; a heat conduction member contacting a mid portion of said discharge tube in a longitudinal direction thereof so that a portion of said discharge tube near said electrode of said discharge tube is prevented from being the lowest point in temperature, the discharge tube is covered with said reflector; and a pair of electrodes are at the respective ends of the discharge tube, wherein said heat conduction member contacts the mid portion of said discharge tube in a longitudinal direction thereof at a position except for a region to which metal particles from said electrode of said discharge are attached.