Patent ID: 6359376
Filing Date: 2002-03-19
Classification: H01J

Abstract:
A fluorescent lamp (1) for exterior lighting comprising a straight or circularly bent discharge tube (2) made from glass with a circular cross section of less than or equal to 26 mm outside diameter, an electrode (3, 4) sealed into each end of the discharge tube (2), one electrode (3) being arranged at a somewhat greater distance from the end of the discharge tube (2) than the other electrode (4) so that a cold spot can form behind this electrode, a fluorescent coating on the inner wall of the discharge tube (2) and a mercury-inert gas filling as well as a base (9, 10) fitted respectively at either end of the discharge tube (2) and having at least one base pin (13, 14) and a base shell (11, 12) wherein at least in the region of one electrode (3) sealed at a somewhat greater distance from the end of a discharge tube (2) a material which is a good conductor of heat is provided outside on the discharge tube (2).