INCANDESCENT LAMP

摘要

PROBLEM TO BE SOLVED: To provide an incandescent lamp having a resin bulb in which rise in temperature is suppressed. SOLUTION: An amount of infrared radiation can be decreased and visual radiation can be increased by disposing a micro cavity 6 in a filament 4. Temperature at a resin-made bulb 1 can be kept low even if the bulb 1 is used for a bulb while improving lamp efficiency. COPYRIGHT: (C)2004,JPO&NCIPI