| 摘要 |
PURPOSE:To shorten a bulb spacer by forming notches axially on both sides of bulb spacer fixing position at the side of a shield cup then fusing a spacer. CONSTITUTION:A notch 19 is formed in axial direction at the side of a shield cup 18 to form a bulb spacer fixing section 20. A bulb spacer 161 is fused at the tip of the bulb spacer fixing section 20 where said section 20 is used as a portion of a bulb spacer 161. Consequently the bulb spacer is shortened and the fixing work of seal at the neck portion 3 can be performed well. |
