| 摘要 |
PURPOSE: To supply power through a lead wire not insulated by extending wire ducts limited to an interval between sub partitions between front and back ends and providing lead wires within the respective lead wires. CONSTITUTION: A housing 30 has a circumferential wall 36 extending to a front end 32, a back end 34, and an interval therebetween. The circumferential wall 36 limits a first cavity 37 closed by a barrier to boundary 33 at the front end 32. Further, the cavity 37 is limited by a main partition 40 for separating the cavity from electric wire tubes, that is, wire ducts 42. The wire ducts 42 are mutually separated by sub partitions 44 extending between the main partition and circumferential wall. Only the electric wire tubes or wire ducts 42 are opened onto the barrier 33, and a mutual space between the electric wire tubes 42 is closed by the barrier 33, thereby acting so as to separate wire leads 1 to 4 from each other and insulate. Thus, temperature performance of the lamp unit can be improved. |
