| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wedge base bulb for a vehicle with high vibration durability. <P>SOLUTION: In a wedge base bulb 1 for a vehicle which is constituted by stretching a filament 5 with a coil part 5a and leg parts 5b which extend from both ends of the coil part 5a between the tip parts of two pieces of lead-in wire 3 by caulking the leg parts 5b of the filament 5 at the respective tip parts of the two pieces of lead-in wire 3 introduced inside a glass bulb 2 by penetrating a collapsed encapsulation part 2a formed at the end of the glass bulb 2, ratio of the filament 5 (leg part length/coil part length) is set to 20.0% to 27.7%. <P>COPYRIGHT: (C)2013,JPO&INPIT</p> |
