| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a vessel and its manufacturing method wherein the shape at the front end of a base pin is stable and the connecting strength of a lead wire is improved with a relatively easy connecting method. SOLUTION: The vessel is provided with a bulb 1, lead wires 4, 4 that is connected with a filament electrode 5 as a sealing member sealed in the bulb 1 and that is sealed to the bulb 1 to lead out to outside, a base member 6 attached to the bulb 1, the base pin 7 wherein a base end side thereof is disposed on the base member 6 so as to force the lead wires to go through an interior portion, a welding portion 25 having smaller diameter than the external diameter of the base pin and formed to project from the front end of the base pin in the longitudinal direction. According to the vessel, the welding portion 25 is formed by plasma welding so as to mix a part of the front end of the base pin and the front end side of the lead wires 4, 4 so that the shape at the front end of the base pin 7 has a smooth surface and the connecting strength of the lead wire 4, 4 can be increased.</p> |
