| 摘要 |
PROBLEM TO BE SOLVED: To realize a discharge tube capable of preventing peel-off of a trigger discharge film due to shock of discharge generated at a discharge gap between discharge electrodes, and exerting an excellent discharge delay prevention effect. SOLUTION: In the discharge tube 10, both-end openings of a case member 12 is sealed airtightly with a pair of lid members 14, 14 serving also as discharge electrodes to make up an airtight envelope 16, in which 16 discharge gas is sealed in, a discharge gap 22 is formed between discharge electrode parts 18, 18 of the lid members 14, 14, and a plurality of trigger discharge films 28 with both ends arranged so as to separate the lid members 14, 14 from micro discharge gaps 26 are formed on inner wall faces of the case member 12. The discharge electrode parts 18, 18 is enveloped by a ring-shape member 32 inserted into the case member 12, and at the same time, a plurality of trigger discharge films 28 with both ends arranged so as to separate the lid members 14, 14 from micro discharge gaps 26 are formed at an outer periphery face of the ring-shape member 32. COPYRIGHT: (C)2006,JPO&NCIPI
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