| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a lamp in which deterioration of a lifetime due to the effect of heat by a circuit unit is suppressed and, on the whole, the similar part to an HID lamp shines. <P>SOLUTION: The lamp 10 has a base 22 installed on a pedestal 12 and an LED 36 being a semiconductor light-emitting element mounted on the opposite side to the base 22 through the pedestal 12. A pillar-shape light guide member 44 having a hollow part 48 is installed in the pedestal 12 with the incident face 46 facing the emitting part of light of the LED 36, and in the central part in axis center direction of the light guide member 44, a reflecting film 50 being a course change part to change the course of light of the LED 36 which enters from the incident face 46 and advances toward the top end side end face in the direction to cross the axis center, is formed. A circuit unit 66 which converts electric power received from the base 22 and makes the LED 36 emit light is housed in the hollow part 48. The light of the LED 36 incident from the incident face 46 of the light guide member 44 is emitted from the outer surface of the light guide member 44 to the outside of the lamp 10. <P>COPYRIGHT: (C)2012,JPO&INPIT |
