DEVICE FOR PROTECTING BULB HEAT OF PLASMA LIGHTING SYSTEM

摘要

A bulb heat isolating apparatus for an electrodeless lighting bulb is provided to prevent the heat generated by an electrodeless lighting bulb from being transferred to a rotary shaft of a bulb motor by forming a heat insulating part on a connecting member. A resonator includes an electrodeless lighting bulb having a light emitting part filled with a phosphor which is exited by electromagnetic waves to emit visible rays. A support(5b) extending from the light emitting part is connected to a rotary shaft(C) of a bulb motor to rotate the light emitting part of the electrodeless lighting bulb. A heat insulating part is interposed between an end of the support and an end of the rotary shaft of the bulb motor. The support and the rotary shaft are fixed to both ends of a connecting member(110) via a heating insulating member(120).