JPS5576547A - Sealing method of exhaust tube of pressured gas sealed bulb - Google Patents

Sealing method of exhaust tube of pressured gas sealed bulb

Info

Publication number
JPS5576547A
JPS5576547A JP14962278A JP14962278A JPS5576547A JP S5576547 A JPS5576547 A JP S5576547A JP 14962278 A JP14962278 A JP 14962278A JP 14962278 A JP14962278 A JP 14962278A JP S5576547 A JPS5576547 A JP S5576547A
Authority
JP
Japan
Prior art keywords
jaws
exhaust tube
cutting sealing
sealing part
nipping
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
JP14962278A
Other languages
Japanese (ja)
Inventor
Tomiyoshi Hirano
Hidehiro Shinada
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP14962278A priority Critical patent/JPS5576547A/en
Publication of JPS5576547A publication Critical patent/JPS5576547A/en
Pending legal-status Critical Current

Links

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

PURPOSE: To improve the cutting sealing by nipping the exhaust tube with a pair of heated metal nipping jaws, and melting the neck with Joule heat gnerated by passing an electric current between the jaws in the process of softening and deforming of the exhaust tube.
CONSTITUTION: A pair of metal nipping jaws 3 are faced to the cutting sealing part 2a of the exhaust tube 2 of a bulb 1 filled with a pressured gas. The jaws 3 and the cutting sealing part 2a are heated with burners 4 and burners 5 respectively, and the jaws 3 are brought near to press elastically the cutting sealing part 2a. The temperature of the cutting sealing part 2a is rapidly elevated by passing a heating current to the jaws 3 from a power source 6 just before contact of the cutting sealing part 2a to seal the part with melted glass. The slow leakage is prevented even with a gas pressure of more than atmospheric pressure in the exhaust tube 2, and the cutting sealing work is improved.
COPYRIGHT: (C)1980,JPO&Japio
JP14962278A 1978-12-05 1978-12-05 Sealing method of exhaust tube of pressured gas sealed bulb Pending JPS5576547A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14962278A JPS5576547A (en) 1978-12-05 1978-12-05 Sealing method of exhaust tube of pressured gas sealed bulb

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14962278A JPS5576547A (en) 1978-12-05 1978-12-05 Sealing method of exhaust tube of pressured gas sealed bulb

Publications (1)

Publication Number Publication Date
JPS5576547A true JPS5576547A (en) 1980-06-09

Family

ID=15479235

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14962278A Pending JPS5576547A (en) 1978-12-05 1978-12-05 Sealing method of exhaust tube of pressured gas sealed bulb

Country Status (1)

Country Link
JP (1) JPS5576547A (en)

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