JPS5782958A - High pressure discharge lamp - Google Patents

High pressure discharge lamp

Info

Publication number
JPS5782958A
JPS5782958A JP15864880A JP15864880A JPS5782958A JP S5782958 A JPS5782958 A JP S5782958A JP 15864880 A JP15864880 A JP 15864880A JP 15864880 A JP15864880 A JP 15864880A JP S5782958 A JPS5782958 A JP S5782958A
Authority
JP
Japan
Prior art keywords
lamp
luminous
partial pressure
neon
outer tube
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
JP15864880A
Other languages
Japanese (ja)
Inventor
Masato Saito
Keiji Watabe
Masahiro Dobashi
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 JP15864880A priority Critical patent/JPS5782958A/en
Publication of JPS5782958A publication Critical patent/JPS5782958A/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
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent

Landscapes

  • Discharge Lamp (AREA)

Abstract

PURPOSE:To prolong the life of a discharge lamp by enhancing the neon partial pressure in a luminous tube like a metal halide lamp, etc., by a certain amount above the neon partial pressure in an outer tube in order to stabilize the starting characteristics. CONSTITUTION:Ne-N2 mixed gas with a certain pressure is enclosed in an outer lamp 1 like a metal halide lamp, etc., while Ne-Ar which is the mixed rare gas including neon is enclosed in a luminous tube 2 together with a certain amount of mercury, scandium iodide and sodium iodide, then the Ne partial pressure in the luminous lamp 2 is made higher than the Ne partial pressure in the outer tube 1 by 50-60%. Therefore, Ne in the luminous lamp 2 being in durability limit flows into the outer tube 1 positively and the ratio of Ne-Ar remaining in the luminous lamp 2 is gradually enhanced in the lapse of burning time, so the concentration of arc spot of discharge at the beginning time is facilitated, resulting in improvement of the starting characteristics and extension of the life of the lamp.
JP15864880A 1980-11-11 1980-11-11 High pressure discharge lamp Pending JPS5782958A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15864880A JPS5782958A (en) 1980-11-11 1980-11-11 High pressure discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15864880A JPS5782958A (en) 1980-11-11 1980-11-11 High pressure discharge lamp

Publications (1)

Publication Number Publication Date
JPS5782958A true JPS5782958A (en) 1982-05-24

Family

ID=15676294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15864880A Pending JPS5782958A (en) 1980-11-11 1980-11-11 High pressure discharge lamp

Country Status (1)

Country Link
JP (1) JPS5782958A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186283A (en) * 1975-01-24 1976-07-28 Tokyo Shibaura Electric Co METARUHARAIDOR ANPU

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186283A (en) * 1975-01-24 1976-07-28 Tokyo Shibaura Electric Co METARUHARAIDOR ANPU

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