| 摘要 |
A lamp provided with a cylindrical casing (120), the casing including a first casing member (121) and a second casing member (126) having a half-cylindrical shape, the first casing member (121) and the second casing member (126) being joined in a state in which the respective openings of the halved parts face each other. In a state in which a semiconductor light-emitting element (131) is facing outward at one end part, in the cylinder axis direction, of the casing, a light emission module (130) is secured between a first portion (121h) belonging to the first casing member (121) and a portion (126h) of the second casing member (126) opposite the first portion. An illumination circuit unit (150) is secured, at a position further inward from the one end part in the cylinder axis direction, between second portions (121e, 121f, 121g) belonging to the first casing member (121) and portions (126e, 126f, 126g) of the second casing member (126) opposite the second portions. |
