High-pressure discharge lamp.

摘要

The invention relates to a high-pressure discharge lamp comprising a discharge vessel (3) enclosed by an outer envelope (1) provided with a neck (10) which is adjoined by a sleeve (20) of a lamp cap (2). The lamp cap (2) accommodates an electrical circuit provided with a semiconductor switching element (26) which controls the discharge current in the operating condition of the lamp. The semiconductor switching element (26) is provided with a cooling member (24) which is preferably secured to the sleeve (20). Consequently, it is possible to use the lamp according to the invention without further expedients in combination with a stabilization ballast not adapted to the lamp.