| 摘要 |
PURPOSE: To enable to resist thermal variation and corrosion, and to be especially used for the filler including halide, too. CONSTITUTION: A plug 11 which closes an end section of a ceramic discharge tube 8 is directly and airtightly sintered on a conductor 10 which penetrates a seal section, and an internal support member 16 consisting of a ceramic forming part is arranged in the conductor 10 which penetrates the seal section, at a height of the plug 11. |
