| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas discharge tube with lower power consumption and reduced size. SOLUTION: For the gas discharge tube 100 provided with an airtight vessel 1 with gas sealed in, a positive electrode part 4 arranged inside the airtight vessel 1, a negative electrode part 4 separated from the positive electrode part 4 and generating discharge against the positive electrode in the airtight vessel 1, and a conductive discharge channel limiting part 6 arranged between the positive electrode part 4 and the negative electrode part 7 narrowing a discharge channel, a heat insulating effect of the negative electrode part 7 is heightened and temperature maintenance of the negative electrode part 7 is facilitated by providing a negative electrode part cover 8 structured of ceramics, surrounding the negative electrode 7 and having an opening 8d at least at an electron emission side to lower the consumption power. COPYRIGHT: (C)2006,JPO&NCIPI
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