Patent ID: 7781948
Filing Date: 2010-08-24
Classification: F21V,G01J,H01J,H01R

Abstract:
1. A light source apparatus comprising: a gas discharge tube, having a stem portion that holds a plurality of stem pins in penetrating states; a lamp container housing said entire gas discharge tube in an interior space defined by inside walls thereof; and an insulating socket member disposed between said gas discharge tube and an inner wall of said lamp container and being fixed in a state of being positioned with respect to said lamp container, wherein said lamp container includes a lamp fixing plate for fixing said insulating socket member to said lamp container, said lamp fixing plate having an opening that is provided at a center portion thereof and exposes a central portion of said insulating socket member, wherein said insulating socket member is comprised of an electrically insulating material, said insulating socket member having a first surface holding said gas discharge tube, a second surface that opposes said first surface and is closely fixed to said lamp fixing plate, and a plurality of through holes communicating said first surface and said second surface, wherein said insulating socket member, as a structure for fixing said gas discharge tube in a detachable state, has: a plane contacting portion, corresponding to said first surface of said lamp fixing plate, put in plane contact with said stem portion of said gas discharge tube; and a pin socket member provided in correspondence to one of said stem pins and in which the corresponding stem pin is inserted in an electrically connected state while part of the corresponding stem pin is inserted into one of said through holes from the first surface side of said insulating socket member and one end of said pin socket member is inserted into the one of said through holes, inserted with the part of the corresponding stem pin, from the second surface side of said insulating socket member, and wherein the other end of said pin socket member protrudes from said second surface of said insulating socket member through said opening of said lamp fixing plate.