JPS5624750A - Fluorescent discharge lamp - Google Patents

Fluorescent discharge lamp

Info

Publication number
JPS5624750A
JPS5624750A JP9897579A JP9897579A JPS5624750A JP S5624750 A JPS5624750 A JP S5624750A JP 9897579 A JP9897579 A JP 9897579A JP 9897579 A JP9897579 A JP 9897579A JP S5624750 A JPS5624750 A JP S5624750A
Authority
JP
Japan
Prior art keywords
tungusten
wire
discharge lamp
strand
heater
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
JP9897579A
Other languages
Japanese (ja)
Inventor
Kohei Sakayama
Shokichi Noda
Tadashi Yanagi
Takao Takeda
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 JP9897579A priority Critical patent/JPS5624750A/en
Publication of JPS5624750A publication Critical patent/JPS5624750A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01K—ELECTRIC INCANDESCENT LAMPS
    • H01K3/00—Apparatus or processes adapted to the manufacture, installing, removal, or maintenance of incandescent lamps or parts thereof
    • H01K3/02—Manufacture of incandescent bodies

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Discharge Lamp (AREA)

Abstract

PURPOSE:To decrease twisting of filament coils by specifying each line diameter of a tungusten heater and a primary mandrel and the winding pitch of a tungusten strand. CONSTITUTION:The ratio D1/d1 of the wire diameter d1 of tungusten heater 1 to that D1 of a primary mandrel 2 which is finally dissolved and removed is assumed to be about 1.0<D1/d1<3.0 and the ratio G1/d1 of the pitch space G1 of a tungusten strand which is spirally wound on the wire 1 and the wire diameter d1 of the wire 1 is assumed to be about 0.5<G1/d1<2.0. This can decrease mutual twisting of filament coils and improve the their production yield.
JP9897579A 1979-08-02 1979-08-02 Fluorescent discharge lamp Pending JPS5624750A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9897579A JPS5624750A (en) 1979-08-02 1979-08-02 Fluorescent discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9897579A JPS5624750A (en) 1979-08-02 1979-08-02 Fluorescent discharge lamp

Publications (1)

Publication Number Publication Date
JPS5624750A true JPS5624750A (en) 1981-03-09

Family

ID=14234025

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9897579A Pending JPS5624750A (en) 1979-08-02 1979-08-02 Fluorescent discharge lamp

Country Status (1)

Country Link
JP (1) JPS5624750A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6279893B1 (en) 1998-11-13 2001-08-28 Nec Corporation Automatic sheet feeder for an image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6279893B1 (en) 1998-11-13 2001-08-28 Nec Corporation Automatic sheet feeder for an image forming apparatus

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