| 摘要 |
Provided is an LED light source lamp that can provide a more even light-emitting surface without deteriorating the light extraction efficiency, and can further improve the heat dissipation performance. An LED light source lamp 100 has built-in drive circuits 131 to 135 in a housing 110, and is used by being attached to a lamp holder (not shown). An LED installation plate 111 is arranged, in a main space 114 of the housing 110, on an attachment side to the lamp holder. An LED module 120 is installed on a surface, of the LED installation plate 111, opposite to the lamp holder, and is a collection of LEDs which emit light by being driven by the drive circuit. A light diffusion member 160 is arranged so as to block the optical axis of light emitted by each LED of the LED module 120. Here, the drive circuits 131 to 135 are arranged in an outer peripheral space, between the LED module 120 and the light diffusion member 160, so as not to block the optical axis of light emitted by each LED of the LED module 120. |
