Title:
DISCHARGE TUBE AND SURGE ABSORBING DEVICE
Document Type and Number:
WIPO Patent Application WO/2004/091060
Kind Code:
A1
Abstract:
A case member (12) composed of an insulating material has openings at both ends. An airtight envelope (16) is formed by hermetically sealing the both end openings of the case member (12) with a pair of cover members (14, 14) which also serve as discharge electrodes. A certain discharge gap (22) is formed between discharge electrode portions (18, 18) of the cover members (14, 14). A plurality of linear trigger discharge films (28) are formed on the inner wall surface (24) of the case member (12) in such a way that both ends of the films face the cover members (14, 14) with very small discharge gaps (26) intervening therebetween. An insulating coating film (30) containing an alkali iodide is formed on the surface of each discharge electrode portion (18). A discharge tube (10) is formed by filling the airtight envelope (16) with a discharge gas containing Kr (krypton).
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Inventors:
Imai, Koichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hori, Satoshi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Matsuyama, Yoichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hanamura, Yoshikazu c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hori, Satoshi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Matsuyama, Yoichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hanamura, Yoshikazu c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Application Number:
PCT/JP2004/004785
Publication Date:
October 21, 2004
Filing Date:
April 01, 2004
Export Citation:
Assignee:
OKAYA ELECTRIC INDUSTRIES CO., LTD. (2-46-3, Sangenjaya Setagaya-ku, Tokyo, 154-8535, JP)
Imai, Koichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hori, Satoshi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Matsuyama, Yoichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hanamura, Yoshikazu c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Imai, Koichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hori, Satoshi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Matsuyama, Yoichi c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
Hanamura, Yoshikazu c/o Okaya Electric Industries Co. Ltd. (Saitama Technical Center, 1003, Aza Egawa, Saij, Gyoda-shi Saitama, 361-0005, JP)
International Classes:
H01J17/20; H01J17/40; H01T4/12; (IPC1-7): H01T4/12; H01J61/16; H01J61/067; H01J61/54
Attorney, Agent or Firm:
Okuda, Hiroyuki (Seiko Toranomon Building 2F, 1-8-10 Toranomo, Minato-ku Tokyo, 105-0001, JP)
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