| 摘要 |
PROBLEM TO BE SOLVED: To prevent degradation of luminous efficiency caused by an excessive temperature increase to improve performance by unifying a lamp drive circuit, so as to mount the lamp drive circuit not only inside but also outside a lighting device. SOLUTION: This lamp drive circuit 1 comprises a resin board 2 and a conductive board 3. The resin board 2 is formed with a through hole 2a, allowing penetration of a component attaching part 31 of the conductive plate 3 from behind. The conductive plate 3 is formed of a metal plate-like member in an almost L-shape comprising both a heat radiating part 32 and the component attaching part 31 formed with slits 31a for holding lead terminals of electronic components, while the conductive plate 3 is attached to the resin board 2 such that the conductive plate 3 is disposed according to a circuit structure. Thereby, the lamp drive circuit 1 is unified to be mounted not only on inside but also on the outside a lighting device so that degradation of luminous efficiency caused by an excessive temperature increase can be prevented. |
