INACRIVE GAS DISCHARGE LAMP DEVICE

摘要

The rare gas discharge lamp device comprises a bulb with a rare gas sealed therein with a pair of internal electrodes provided within the bulb. A phosphor layer is formed on the inner surface of the bulb, and a lighting circuit adapted to apply voltage across two internal electrodes to produce a discharge or a positive column between the internal electrodes. An auxiliary electrode is formed on the outer surface of the bulb and extends in the longitudinal direction of the bulb. The positive column is attracted toward the auxiliary electrode, and a window formed on the bulb in a manner to face the auxiliary electrode for emitting visible light to be produced within the bulb.