| 摘要 |
PROBLEM TO BE SOLVED: To provide a bulb like an incandescent lamp or fluorescent lamp with a lead wire without a risk of a filament disconnection due to a connection of lead wire or a getting off of a leg part from a hooking part. SOLUTION: The bulb L1 comprises an airtightly sealed glass bulb 1, an inner lead wire 3A led inside the bulb 1, made of at least a pair of twisted wires, a main coil-shaped part 5C, and leg parts 5L, 5L connected to both ends of the main coil-shaped part, which are formed by winding a tungsten wire, and a coil-shaped filament 5 formed by holding and jointing the leg part 5L at the inside a hooking part 3F formed by folding a top end part of the inner lead wire 3A.
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