| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a self-ballasted lamp that efficiently controls temperature rise of a light source, and also prevents the degradation of an operation reliability of a lighting circuit and degradation of its lifetime, while achieving miniaturization, and that prevents electrical short circuit. <P>SOLUTION: In each through-hole 4b, an insulation cylinder 29 formed of electric insulation resin, such as PBT (polybutylene terephthalate), is inserted. Of an insulation coating wire 24 connected with a circuit board 22, a tip with its core wire (copper wire) 24a exposed is soldered to a light source substrate 12 through a wire through-hole 26c. The risk of short circuit between the core wire 24a and a metal-made light source mounting part 4 can be prevented by the insulation cylinder 29. <P>COPYRIGHT: (C)2010,JPO&INPIT |
