JPS5717554A - High pressure sodium lamp - Google Patents

High pressure sodium lamp

Info

Publication number
JPS5717554A
JPS5717554A JP9318980A JP9318980A JPS5717554A JP S5717554 A JPS5717554 A JP S5717554A JP 9318980 A JP9318980 A JP 9318980A JP 9318980 A JP9318980 A JP 9318980A JP S5717554 A JPS5717554 A JP S5717554A
Authority
JP
Japan
Prior art keywords
electrode
coil
core rod
nonfusible
electrode core
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
JP9318980A
Other languages
Japanese (ja)
Other versions
JPS6224900B2 (en
Inventor
Naoki Saito
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 JP9318980A priority Critical patent/JPS5717554A/en
Publication of JPS5717554A publication Critical patent/JPS5717554A/en
Publication of JPS6224900B2 publication Critical patent/JPS6224900B2/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
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • H01J61/26—Means for absorbing or adsorbing gas, e.g. by gettering; Means for preventing blackening of the envelope

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To reduce dispersion and evaporation of electrode substance and prolong the life of a lamp by using the nonfusible metal having getter action at least for one of the outside coil and the inside coil of an electrode, suppressing formation of impure gas. CONSTITUTION:The electrode of a high pressure sodium lamp is so constituted that the coil 9 consisting of a nonfusible metal wire having getter action such as tantaium is closely wound in 2-4 turns on the introducing side of the electrode core rod 8 made of tungsten or thorium tungsten, and a space is formed between the electrode core rod 8 and the outside coil 9 by winding the wire, keeping a fixed distance from the electrode core rod 8 at the center part. Into the space formed between the inner surface of the outside coil 9 and the electrode core rod 8, the treble inside coil 10 which consists of the nonfusible thin metal wire having getter action such as tantalum having electron radiation substance adhered.
JP9318980A 1980-07-07 1980-07-07 High pressure sodium lamp Granted JPS5717554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9318980A JPS5717554A (en) 1980-07-07 1980-07-07 High pressure sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9318980A JPS5717554A (en) 1980-07-07 1980-07-07 High pressure sodium lamp

Publications (2)

Publication Number Publication Date
JPS5717554A true JPS5717554A (en) 1982-01-29
JPS6224900B2 JPS6224900B2 (en) 1987-05-30

Family

ID=14075625

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9318980A Granted JPS5717554A (en) 1980-07-07 1980-07-07 High pressure sodium lamp

Country Status (1)

Country Link
JP (1) JPS5717554A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649187A (en) * 1979-09-26 1981-05-02 Shigeru Murakoshi Sewing machine with meandering controller
JPS57166193A (en) * 1981-04-03 1982-10-13 Shigeru Murakoshi Sewing machine with controller for position of sewing
JPS61281450A (en) * 1985-04-29 1986-12-11 ゼネラル・エレクトリツク・カンパニイ High pressure sodium lamp with getter
JPH067674U (en) * 1991-11-21 1994-02-01 今治キンダイ株式会社 Sewing machine

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101874A (en) * 1977-02-18 1978-09-05 Hitachi Ltd High pressure sodium lamp

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS53101874A (en) * 1977-02-18 1978-09-05 Hitachi Ltd High pressure sodium lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5649187A (en) * 1979-09-26 1981-05-02 Shigeru Murakoshi Sewing machine with meandering controller
JPS6219878B2 (en) * 1979-09-26 1987-05-01 Shigeru Murakoshi
JPS57166193A (en) * 1981-04-03 1982-10-13 Shigeru Murakoshi Sewing machine with controller for position of sewing
JPS61281450A (en) * 1985-04-29 1986-12-11 ゼネラル・エレクトリツク・カンパニイ High pressure sodium lamp with getter
JPH0561747B2 (en) * 1985-04-29 1993-09-07 Gen Electric
JPH067674U (en) * 1991-11-21 1994-02-01 今治キンダイ株式会社 Sewing machine
JP2551223Y2 (en) * 1991-11-21 1997-10-22 矢野 弘 Sewing machine

Also Published As

Publication number Publication date
JPS6224900B2 (en) 1987-05-30

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