JPS5753057A - Metal vapor discharge lamp - Google Patents

Metal vapor discharge lamp

Info

Publication number
JPS5753057A
JPS5753057A JP12986480A JP12986480A JPS5753057A JP S5753057 A JPS5753057 A JP S5753057A JP 12986480 A JP12986480 A JP 12986480A JP 12986480 A JP12986480 A JP 12986480A JP S5753057 A JPS5753057 A JP S5753057A
Authority
JP
Japan
Prior art keywords
luminous tube
amalgam
electrodes
unreliability
phi
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
JP12986480A
Other languages
Japanese (ja)
Other versions
JPH0137826B2 (en
Inventor
Katsuya Otani
Masahiro Dobashi
Keiji Watabe
Ryo Suzuki
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 JP12986480A priority Critical patent/JPS5753057A/en
Publication of JPS5753057A publication Critical patent/JPS5753057A/en
Publication of JPH0137826B2 publication Critical patent/JPH0137826B2/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
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To prevent the adhesion of amalgam to the electrodes of a luminous tube enclosing at least sodium and mercury and eradicate the unreliability of starting and the occurrence of a crack, by adjusting the diameter of the core of each electrode of the luminous tube to specific specific value and less per a unit rated current. CONSTITUTION:The diameter of the core of each electrode of a ceramic luminous tube 1 enclosing electrodes 2, 3 of which base material is tungsten and at least sodium and mercury is adjusted to 0.98mm.phi and less per a unit rated current. It is because the unreliability of starting and the occurrence of a crack occurring in the working time of the luminous tube 1 is caused by the diffusion of the lines alpha of electric force occasioned by the portions phi adhered with amalgam of sodium-mercury created on the end portions of the luminous tube 1, and the adhered portions phi are created because the amalgam vapor is apt to adhere to the electrodes 2, 3 when lighting and the extinguishment of light are done frequently in a short time. Therefore, the unreliability of starting and the occurrence of a crack can be eradicated by preventing the adhesion of amalgam by means of making the diameter of the core of each electrode large and slowing the cooling speed of the electrodes after extinguishing light.
JP12986480A 1980-09-17 1980-09-17 Metal vapor discharge lamp Granted JPS5753057A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12986480A JPS5753057A (en) 1980-09-17 1980-09-17 Metal vapor discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12986480A JPS5753057A (en) 1980-09-17 1980-09-17 Metal vapor discharge lamp

Publications (2)

Publication Number Publication Date
JPS5753057A true JPS5753057A (en) 1982-03-29
JPH0137826B2 JPH0137826B2 (en) 1989-08-09

Family

ID=15020158

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12986480A Granted JPS5753057A (en) 1980-09-17 1980-09-17 Metal vapor discharge lamp

Country Status (1)

Country Link
JP (1) JPS5753057A (en)

Also Published As

Publication number Publication date
JPH0137826B2 (en) 1989-08-09

Similar Documents

Publication Publication Date Title
GB1428494A (en) Sodium vapour lamp having starting means
JPS5838449A (en) High pressure sodium lamp
JPS5753057A (en) Metal vapor discharge lamp
JPS5753056A (en) Metal vapor discharge lamp
FR2408215A1 (en) HIGH PRESSURE GAS DISCHARGE LAMP
JPS57134858A (en) Metal vapour discharge lamp
GB1429044A (en) Sodium vapour lamp having a grooved alumina arc tube thiazole card'ovascular agents
EP0517304A2 (en) High-pressure gas discharge lamp
JPS6254231B2 (en)
EP0204382B1 (en) High-pressure sodium discharge lamp
US6087784A (en) Glow discharge lamp
JPH05266861A (en) High-pressure sodium lamp
JPS5753062A (en) Halide lamp
JPS5454467A (en) Metal vapor discharge lamp
JPS54150871A (en) Super high pressure mercury discharge lamp
JPS5219482A (en) Lectrode for use in high-voltage discharge lamps
JPS5749156A (en) Discharge lamp
JPH0831374A (en) Fluorescent lamp and its device
JPS5838451A (en) High pressure sodium lamp
JP2001345064A (en) Metal halide lamp
JPS55143771A (en) Metal vapor discharge lamp
JPS51145183A (en) Ceramic discharge tube
JPH0471306B2 (en)
JPS6084763A (en) Rapid start type fluorescent lamp
JPS5519733A (en) High voltage mercury gas discharge lamp