JPS55136449A - Metal halide lamp - Google Patents

Metal halide lamp

Info

Publication number
JPS55136449A
JPS55136449A JP4282079A JP4282079A JPS55136449A JP S55136449 A JPS55136449 A JP S55136449A JP 4282079 A JP4282079 A JP 4282079A JP 4282079 A JP4282079 A JP 4282079A JP S55136449 A JPS55136449 A JP S55136449A
Authority
JP
Japan
Prior art keywords
bent area
tip
electrode
metal halide
halide 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
JP4282079A
Other languages
Japanese (ja)
Inventor
Akihiro Kamiya
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 JP4282079A priority Critical patent/JPS55136449A/en
Publication of JPS55136449A publication Critical patent/JPS55136449A/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
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To prevent an electrode stem from being deformed due to large current at start and improve its starting characteristic and stability by specifying its wire diameter, the dimensions from its coil tip to the tip wire of the bent area and lamp current. CONSTITUTION:The principal electrode 3 is constituted so that the wire diameter (d) of the electrode stem 10, the dimensions from the tip of the electrode coil 13 to that of the bent area 11, that is the projection length (l) of the bent area 11 and lamp current IL can satisfy the relationship of 4d<=l<=8d and 0.22IL<1/2=d<= 0.35IL<1/2>. At lightening, an arc spot is formed on the bent area 11 which projects on the side of discharge space.
JP4282079A 1979-04-09 1979-04-09 Metal halide lamp Pending JPS55136449A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4282079A JPS55136449A (en) 1979-04-09 1979-04-09 Metal halide lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4282079A JPS55136449A (en) 1979-04-09 1979-04-09 Metal halide lamp

Publications (1)

Publication Number Publication Date
JPS55136449A true JPS55136449A (en) 1980-10-24

Family

ID=12646582

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4282079A Pending JPS55136449A (en) 1979-04-09 1979-04-09 Metal halide lamp

Country Status (1)

Country Link
JP (1) JPS55136449A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0350750U (en) * 1989-09-22 1991-05-17
US6342764B1 (en) 1999-05-24 2002-01-29 Matsushita Electric Industrial Co., Ltd High pressure discharge lamp
US6469442B2 (en) 1999-05-25 2002-10-22 Matsushita Electric Industrial Co., Ltd. Metal vapor discharge lamp
US6639361B2 (en) 1999-05-25 2003-10-28 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6646379B1 (en) 1998-12-25 2003-11-11 Matsushita Electric Industrial Co., Ltd. Metal vapor discharge lamp having cermet lead-in with improved luminous efficiency and flux rise time
KR100651286B1 (en) * 1998-12-04 2006-11-28 오스람 실바니아 인코포레이티드 Capacitive glow starting of high intensity discharge lamps

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0350750U (en) * 1989-09-22 1991-05-17
KR100651286B1 (en) * 1998-12-04 2006-11-28 오스람 실바니아 인코포레이티드 Capacitive glow starting of high intensity discharge lamps
US6646379B1 (en) 1998-12-25 2003-11-11 Matsushita Electric Industrial Co., Ltd. Metal vapor discharge lamp having cermet lead-in with improved luminous efficiency and flux rise time
US6342764B1 (en) 1999-05-24 2002-01-29 Matsushita Electric Industrial Co., Ltd High pressure discharge lamp
US6469442B2 (en) 1999-05-25 2002-10-22 Matsushita Electric Industrial Co., Ltd. Metal vapor discharge lamp
US6639361B2 (en) 1999-05-25 2003-10-28 Matsushita Electric Industrial Co., Ltd. Metal halide lamp

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