| 摘要 |
PROBLEM TO BE SOLVED: To solve problems such as a long assembling period of time, a demand for high accuracy of dimension, and a complicated shape, when a lighting circuit board of an illumination lamp is held within an enclosure.SOLUTION: The illumination lamp comprises: a cylindrical enclosure part 3 that forms an interior space by communicating with a first interior space 321 having a first bore, a second interior space 322 having a second bore smaller than the first bore, and a pyramid-shaped third interior space 323 which links the first interior space with the second interior space; a lightning circuit 5 arranged for lightning a light source; and a lighting circuit board 500 formed by linking a width-wider part end surface narrower than the first bore and wider than the second bore with a width-narrower part end surface narrower than the second bore, and having an edge face of a taper part 501, which is inserted into the interior space to contact an inner peripheral wall part of the third interior space. |
