JPS5671268A - Ring-shaped fluorescent lamp - Google Patents

Ring-shaped fluorescent lamp

Info

Publication number
JPS5671268A
JPS5671268A JP14791979A JP14791979A JPS5671268A JP S5671268 A JPS5671268 A JP S5671268A JP 14791979 A JP14791979 A JP 14791979A JP 14791979 A JP14791979 A JP 14791979A JP S5671268 A JPS5671268 A JP S5671268A
Authority
JP
Japan
Prior art keywords
ring
diameter
coiled
electrode
coiled wire
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
JP14791979A
Other languages
Japanese (ja)
Other versions
JPS6257070B2 (en
Inventor
Suguru Mukai
Masaki Suo
Ikuhiro Okuno
Takahito Shigenishi
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 JP14791979A priority Critical patent/JPS5671268A/en
Publication of JPS5671268A publication Critical patent/JPS5671268A/en
Publication of JPS6257070B2 publication Critical patent/JPS6257070B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent

Landscapes

  • Discharge Lamp (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To prevent flickering in the neighbourhood of an electrode by sealing a rare gas of weighted mean atomic weight heavier than that of argon gas in a ring- shaped tube and making a diameter of coiled wire of a filament electrode specially sized. CONSTITUTION:A single or mixing rare gas having a weighted mean atomic weight heavier by 15% than that of argon gas is sealed in a tube of a ring-shaped fluorescent lamp at end parts of which coiled-coil dilament electrodes 2 and 3 are provided and the inner diameter and ring inner diameter of which are 23-29mm. and 139-392mm., respectively and Dw, a diameter of coiled wire of the coiled-coil filament electrode is selected by Dw<=0.097I+32 where I=lamp discharge current. Consequently Dw, a diameter of coiled wire which is greatly influential to the stability of electrode oscillation can be properly determined and irregular flickering generated in the neightbourhood of the electrodes can be prevented almost perfectly.
JP14791979A 1979-11-14 1979-11-14 Ring-shaped fluorescent lamp Granted JPS5671268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14791979A JPS5671268A (en) 1979-11-14 1979-11-14 Ring-shaped fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14791979A JPS5671268A (en) 1979-11-14 1979-11-14 Ring-shaped fluorescent lamp

Publications (2)

Publication Number Publication Date
JPS5671268A true JPS5671268A (en) 1981-06-13
JPS6257070B2 JPS6257070B2 (en) 1987-11-28

Family

ID=15441054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14791979A Granted JPS5671268A (en) 1979-11-14 1979-11-14 Ring-shaped fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS5671268A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6789919B2 (en) 2001-04-25 2004-09-14 Nec Corporation Circular fluorescent lamp unit and lighting apparatus

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108587U (en) * 1978-01-18 1979-07-31

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54108587U (en) * 1978-01-18 1979-07-31

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6789919B2 (en) 2001-04-25 2004-09-14 Nec Corporation Circular fluorescent lamp unit and lighting apparatus

Also Published As

Publication number Publication date
JPS6257070B2 (en) 1987-11-28

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