ELECTRODELESS LOW-PRESSURE DISCHARGE LAMP

摘要

An electrodeless low-pressure discharge lamp according to the invention is provided with a discharge vessel (10) which is closed in a gastight manner, which has a cavity (11), which encloses a discharge space, and which is provided with an ionizable filling. A coil (20) with a winding (21) of an electric conductor and an assembly (30) of a heat conductor (31) and one or several elongate cores (32) of soft-magnetic material are accommodated in the cavity. The cores (32) are arranged along a longitudinal axis (33) of the heat conductor (31) in one or several recesses (34) of the heat conductor which issue into a circumferential surface (36) of the assembly (30). The heat conductor (31) occupies at least halft the circumference in a cross section perpendicular to the longitudinal axis (33) of the assembly (30). The construction of the lamp according to the invention renders possible lamp operation at higher lamp powers also without the use of a heat pipe.