GAS DISCHARGE TUBE

摘要

A gas discharge tube makes a discharge path constricted by the cooperation of a first opening (18) and a second opening (13) to develop high-luminance light. For improving the starting property of a lamp even by constricting the discharge path, a predetermined voltage is impressed from outside on first and second discharge limiters (16, 12). Thus, a positive starting discharge which passes through the first and second openings, so that a discharge between a cathode (20) and an anode (8) is rapidly started. The anode, cathode, and first and second discharge path limiters are electrically connected with first-fourth stem pins (9A-9D) and effectively utilize the respective stem pins to retain a light emitter assembly.