JPS54139280A - Nethod of fabricating annular fluorescent lamp - Google Patents

Nethod of fabricating annular fluorescent lamp

Info

Publication number
JPS54139280A
JPS54139280A JP4740078A JP4740078A JPS54139280A JP S54139280 A JPS54139280 A JP S54139280A JP 4740078 A JP4740078 A JP 4740078A JP 4740078 A JP4740078 A JP 4740078A JP S54139280 A JPS54139280 A JP S54139280A
Authority
JP
Japan
Prior art keywords
capsule
bulb
fine tube
fluorescent lamp
mercury
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.)
Granted
Application number
JP4740078A
Other languages
Japanese (ja)
Other versions
JPS5810814B2 (en
Inventor
Kazunori Fukunaga
Masaru Yamaguchi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics Corp
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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP4740078A priority Critical patent/JPS5810814B2/en
Publication of JPS54139280A publication Critical patent/JPS54139280A/en
Publication of JPS5810814B2 publication Critical patent/JPS5810814B2/en
Expired legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To prevent irregularly filled mercury amount in a capsule of metal containing mercury attached to an annular fluorescent lamp by filling inert gas from one side of a linear bulb attached with the capsule and heating the bulb while cooling the capsule to thereby prevent the capsule from damaging.
CONSTITUTION: A linear bulb 6' disosed at the electrode mount 5 having an evacuation side fine tube 1, filament 12, or the like at upside and at the electrode mount 5' having opposite evacuation side fine tube 3, metal capsule 8 codntaining mercury inserted into the fine tube 3, filament 12', or the like at downside is inserted into a holder 2. The fine tube 3 is then inserted through the inner passage 7 of a nitrogen gas feeding post 4 to feed the gas into the bult 6 and also inserted into a heating furnace to heat at 600 to 800°C. Then, the bult is formed in annular shape by an annular mold (not shown). The capsule 8 is always cooled by the nitrogen gas to cause no breakage. The bulb 6 is then completed at the later predetermined steps.
COPYRIGHT: (C)1979,JPO&Japio
JP4740078A 1978-04-20 1978-04-20 Manufacturing method of ring-shaped fluorescent lamp Expired JPS5810814B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4740078A JPS5810814B2 (en) 1978-04-20 1978-04-20 Manufacturing method of ring-shaped fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4740078A JPS5810814B2 (en) 1978-04-20 1978-04-20 Manufacturing method of ring-shaped fluorescent lamp

Publications (2)

Publication Number Publication Date
JPS54139280A true JPS54139280A (en) 1979-10-29
JPS5810814B2 JPS5810814B2 (en) 1983-02-28

Family

ID=12774054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4740078A Expired JPS5810814B2 (en) 1978-04-20 1978-04-20 Manufacturing method of ring-shaped fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5810814B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780634A (en) * 1980-11-07 1982-05-20 Matsushita Electronics Corp Manufacturing method for annular fluorescent lamp
JPS58112227A (en) * 1981-12-25 1983-07-04 Toshiba Corp Manufacture of bent tube type fluorescent lamp

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5780634A (en) * 1980-11-07 1982-05-20 Matsushita Electronics Corp Manufacturing method for annular fluorescent lamp
JPS58112227A (en) * 1981-12-25 1983-07-04 Toshiba Corp Manufacture of bent tube type fluorescent lamp
JPH0151017B2 (en) * 1981-12-25 1989-11-01 Toshiba Electric Equip

Also Published As

Publication number Publication date
JPS5810814B2 (en) 1983-02-28

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