TUBULAR BALLAST HEAT SINK FOR MERCURY VAPEUR DISCHARGE LAMP

摘要

PHN. 9835 44 Low-pressure mercury vapour discharge lamp having an electrical stabilization ballast which occupies a central position in the lamp. The discharge vessel surrounds the ballast. In order to dissipate the heat generated by the ballast during operation to the environment of the lamp, a thin-walled heat sink of a heat-conductive material which bears on the ballast is provided between the ballast and the discharge vessel, this body having a collar which extends as far as the exterior of the lamp.