JPS54107177A - Production of annular fluorescent lamp - Google Patents

Production of annular fluorescent lamp

Info

Publication number
JPS54107177A
JPS54107177A JP1354978A JP1354978A JPS54107177A JP S54107177 A JPS54107177 A JP S54107177A JP 1354978 A JP1354978 A JP 1354978A JP 1354978 A JP1354978 A JP 1354978A JP S54107177 A JPS54107177 A JP S54107177A
Authority
JP
Japan
Prior art keywords
pipe
evacuation
dimensions
tip end
evacuation pipe
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
JP1354978A
Other languages
Japanese (ja)
Inventor
Hideji Shima
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 JP1354978A priority Critical patent/JPS54107177A/en
Publication of JPS54107177A publication Critical patent/JPS54107177A/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 lower the rejection rate of lamps and to enhance lamp characteristics by fixing by fixing an evacuation pipe to a predetermined position so that the pipe formed has a constant length and forming the pipe in a predetermined shape while restricting the dimensions thereof.
CONSTITUTION: In an evacuation pipe forming step, the evacuation pipe 2 of a bulb 1 is sufficiently heated by burner 3. The tip end of the pipe 2 thus heated is nipped by an evacuation pipe nipper 5. Keeping this condition, the nipper 5 is traveled up to a point where the tip end locates in the position of the formed pipe 2, and fixed in situ. An evacuation pipe dimensions restrictor 6 is pressed against the tip end of the pipe 2, and the dimensions of the pipe 2 are adjusted. Keeping this condition, an evacuation pipe forming jig is moved rightward and leftward to form the pipe 2 into a predetermined shape.
COPYRIGHT: (C)1979,JPO&Japio
JP1354978A 1978-02-10 1978-02-10 Production of annular fluorescent lamp Pending JPS54107177A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1354978A JPS54107177A (en) 1978-02-10 1978-02-10 Production of annular fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1354978A JPS54107177A (en) 1978-02-10 1978-02-10 Production of annular fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS54107177A true JPS54107177A (en) 1979-08-22

Family

ID=11836233

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1354978A Pending JPS54107177A (en) 1978-02-10 1978-02-10 Production of annular fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS54107177A (en)

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