| 摘要 |
A bulb-shaped lamp 11 includes a housing 12 which is formed of metal, and formed in a cylindrical shape which widely opens toward one end side using press molding. A case 13 which is formed of a synthetic resin, and formed in a cylindrical shape which widely opens toward one end side along the inner surface of the housing 12 is arranged in the housing 12. A base 15 is attached to the other end side of the case 13. A heat radiating plate 17 on which a light emitting module 16 having a semiconductor light emitting element 51a is mounted is arranged on one end side of the housing 12. A lighting circuit 19 is accommodated in the case 13. The lighting circuit 19 includes a lighting circuit board 74 which is vertically arranged along the lamp axis direction in the case 13. The lighting circuit board 74 is formed in a shape in which one end side becomes wide in width along the inner surface shape of the case 13, and is arranged at a position which is close to the base 15 side in the case 13. |
