High voltage discharge lamp apparatus for vehicles

摘要

A discharge lamp apparatus is provided having a DC power source (1) and a discharge lamp (2) comprising:
a transformer (41) for boosting a voltage of the power source;
a switching element (42) connected to a primary side of the transformer; and
power control means (100, 300) for duty-controlling the switching element based on a signal indicating a lighting state of the discharge lamp to thereby control the power supplied to the discharge lamp,
wherein the power control means is provided with power reduction means (600) for reducing the power supplied to the discharge lamp as a temperature increases.