| 摘要 |
PROBLEM TO BE SOLVED: To provide a lamp having long life and in which a light distribution angle can be broadened.SOLUTION: By utilizing power received from a base 30, a plurality of LED light sources 51b mounted on a mounting substrate 51a are made to emit light, and heat of each of the LED light sources 51b at the time of light emission is radiated by a heat sink 10. The heat sink 10 is arranged along a lamp axis CL which coincides with a shaft center of the base 30, and at an end part on the opposite side of the base 30, a base part 11 having a mounting surface 11a on which the mounting substrate 51a is mounted is provided. The mounting surface 11a has: a first region on which the mounting substrate 51a is mounted; and a second region around the first region. In the second region, a light diffusion lens 53 having a function of diffusing light emitted from each of the LED light sources 51b is fitted. |
