STRUCTURE FOR PREVENTING HEAT ON REFLECTIVE PORTION IN ELECTRODELESS LIGHTING SYSTEM

摘要

PURPOSE: A structure for preventing heat on a reflective portion in an electrodeless lighting system is provided to lengthen a lifetime of the reflective portion by preventing the concentration of the light on a predetermined portion of the reflective portion. CONSTITUTION: A reflective portion(100) has a shape of sphere and is fixed to a casing(10). A resonator(50) is installed in the inside of the reflective portion in order to generate the electric field by electromagnetic waves generated from an electromagnetic wave generator(30). An electrodeless lamp(60) is installed in the inside of the resonator in order to generate plasma and radiate the light. A thermal concentration prevention portion(120) is installed between the resonator and the reflective portion in order to prevent the concentration of the light on a predetermined portion of the reflective portion.