| 摘要 |
PROBLEM TO BE SOLVED: To provide an LED bulb where bright light is radiated to the rear surface side thereof as well as the front surface side and heat radiation effect is improved.SOLUTION: An LED bulb includes: an LED substrate 2 to which an LED 1 is attached; a light transmissive diffusion member 3 attached to the rear surface side of the LED substrate 2; and a heat sink 10 on which the LED substrate 2 and the diffusion member 3 are placed. Light transmissive holes 13 are formed at the heat sink 10. |
