High-pressure sodium vapour discharge lamp.

摘要

A high-pressure sodium vapour discharge lamp having a discharge vessel (1) in which main electrodes (8; 10) are arranged and an ignition system which comprises an electric conductor (15) surrounding the discharge vessel (1) over at least a part of its circumference, which conductor is electrically connected to a main electrode (8) at least in the inoperative state of the lamp. The electric conductor (15) is a clamping member clamping around the discharge vessel (1). A fixed, accurate positioning of the electric conductor (15) is thus obtained.