ELECTRODE FOR HOT-CATHODE DISCHARGE LAMP, HOT-CATHODE DISCHARGE LAMP, AND LAMP UNIT

摘要

PROBLEM TO BE SOLVED: To provide an electrode for a hot-cathode discharge lamp that allows further service lifetime extension of a hot-cathode discharge lamp than the conventional one, to provide a hot-cathode discharge lamp having a longer service lifetime than the conventional one, and to provide a lamp unit.;SOLUTION: The electrode for a hot-cathode discharge lamp is provided with two lead wires 106, 107, a filament coil 105 connected between the two lead wires so as to hold an emitter 110, and a heat-resistant structure 109 which is fixed or whose moving range is regulated by a member other than the filament coil so as to suppress a change in filament coil shape.;COPYRIGHT: (C)2008,JPO&INPIT