JPS57115740A - Stem structure for vacuum tube - Google Patents

Stem structure for vacuum tube

Info

Publication number
JPS57115740A
JPS57115740A JP207781A JP207781A JPS57115740A JP S57115740 A JPS57115740 A JP S57115740A JP 207781 A JP207781 A JP 207781A JP 207781 A JP207781 A JP 207781A JP S57115740 A JPS57115740 A JP S57115740A
Authority
JP
Japan
Prior art keywords
wires
leading
glass body
vacuum tube
well
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP207781A
Other languages
Japanese (ja)
Inventor
Saburo Nobutoki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP207781A priority Critical patent/JPS57115740A/en
Publication of JPS57115740A publication Critical patent/JPS57115740A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/46—Leading-in conductors

Landscapes

  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Abstract

PURPOSE:To securely prevent any discharge phenomenon as well as creeping connection of leading-in wires, and obtain a vacuum tube of a high quality and a high voltage-resisting characteristic by forming a film principally consisting of SiO2 on at least peripheral parts of the said leading-in wires which are located on the outer side of a stem. CONSTITUTION:A glass body 1, which is made of a soda or lead glass system having a relatively high expansion coefficient as well as low chemical stability, is provided with an exhaust pipe 1a. Power leading-in wires 2 made of a material having about the same expansion coefficient as the glass body 1, such as Dumet wire, are made to penetrate the glass body 1. At least peripheral parts of the wires 2, which are located on the outer side of the glass body 1 and touch the atmosphere, are coated with a weathering proof film 3 principally consisting of SiO2. Owing to the above constitution, prevention of the discharge phenomenon as well as that of creeping connection of the leading-in wires 2 can be secured, and a high quality vacuum tube with a high voltage-resisting characteristic can be obtained.
JP207781A 1981-01-12 1981-01-12 Stem structure for vacuum tube Pending JPS57115740A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP207781A JPS57115740A (en) 1981-01-12 1981-01-12 Stem structure for vacuum tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP207781A JPS57115740A (en) 1981-01-12 1981-01-12 Stem structure for vacuum tube

Publications (1)

Publication Number Publication Date
JPS57115740A true JPS57115740A (en) 1982-07-19

Family

ID=11519273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP207781A Pending JPS57115740A (en) 1981-01-12 1981-01-12 Stem structure for vacuum tube

Country Status (1)

Country Link
JP (1) JPS57115740A (en)

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