JPS57141857A - Flat fluorescent lamp - Google Patents

Flat fluorescent lamp

Info

Publication number
JPS57141857A
JPS57141857A JP2570381A JP2570381A JPS57141857A JP S57141857 A JPS57141857 A JP S57141857A JP 2570381 A JP2570381 A JP 2570381A JP 2570381 A JP2570381 A JP 2570381A JP S57141857 A JPS57141857 A JP S57141857A
Authority
JP
Japan
Prior art keywords
electrodes
lid case
fluorescent lamp
flat fluorescent
lamp
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
JP2570381A
Other languages
Japanese (ja)
Inventor
Ryoji Minagawa
Toshiro Kajiwara
Takeo Nishikatsu
Masahiro Dobashi
Yoshinori Anzai
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2570381A priority Critical patent/JPS57141857A/en
Publication of JPS57141857A publication Critical patent/JPS57141857A/en
Pending 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
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

PURPOSE:To improve the starting performance, the yield and the efficiency of a flat fluorescent lamp by connecting electrodes and a metal lid case by means of a rectification circuit, and making the electric potential of the metal lid case to be negative to that of one of the electrodes. CONSTITUTION:A plate-like lid case 4 made of metal is fused to the surface end of the opening of a unified molded glass case, which is provided with partition walls 3 and has a meandering path in it. After that, electrodes 5 are provided at both ends of the above meandering path, and the whole constitutes a flat fluorescent lamp 1. The electrodes 5 and the metal lid case 4 are connected by means of a rectification circuit 12 so that the lid case 4 has an electric potential negative to that of one of the electrodes 5. Then, a preheating current is fed from a power source 9 through a choke-coil-type ballast 10 and the electrodes 5, a glow lamp 11 is desconnected to make kick voltage to develop, and the lamp 1 is lit by the above kick voltage.
JP2570381A 1981-02-24 1981-02-24 Flat fluorescent lamp Pending JPS57141857A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2570381A JPS57141857A (en) 1981-02-24 1981-02-24 Flat fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2570381A JPS57141857A (en) 1981-02-24 1981-02-24 Flat fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS57141857A true JPS57141857A (en) 1982-09-02

Family

ID=12173141

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2570381A Pending JPS57141857A (en) 1981-02-24 1981-02-24 Flat fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS57141857A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887752A (en) * 1981-11-18 1983-05-25 Matsushita Electric Works Ltd Low-pressure mercury vapor electric-discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5887752A (en) * 1981-11-18 1983-05-25 Matsushita Electric Works Ltd Low-pressure mercury vapor electric-discharge lamp
JPS6314462B2 (en) * 1981-11-18 1988-03-31 Matsushita Electric Works Ltd

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