JPS56109446A - Metal haride lamp - Google Patents

Metal haride lamp

Info

Publication number
JPS56109446A
JPS56109446A JP1185580A JP1185580A JPS56109446A JP S56109446 A JPS56109446 A JP S56109446A JP 1185580 A JP1185580 A JP 1185580A JP 1185580 A JP1185580 A JP 1185580A JP S56109446 A JPS56109446 A JP S56109446A
Authority
JP
Japan
Prior art keywords
distance
light emitting
wall
lamp
emitting 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
JP1185580A
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 JP1185580A priority Critical patent/JPS56109446A/en
Publication of JPS56109446A publication Critical patent/JPS56109446A/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)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To prevent the early blackening of lamp and to improve the service life, by employing specific values for the encapsulating pressure (P) of Argon mixed gas under room temperature, the distance (L) from the tip of main electrode to the inner wall of a light emitting tube and the values PD and L/D where D is the distance between both main electrodes. CONSTITUTION:Assuming the encapsulating pressure of Neon-Argon mixed gas under room temperature into small lamp having the distance D between main electrodes is shorter than 4cm is P Torr while the distance from the tip of the electrode to the inner wall of a light emitting tube is L cm, PD is in the range of 100-700 Torr-cm while L/D is larger than 1/10. When employing high value of PD and sufficiently high value of L/D in such a manner, the glow discharge occurring through the coating layer of tungsten formed on the inner wall of the light emitting tube can be prevented, thereby the glow discharge time can be shortened while the flux holding rate and the nonfiring life can be improved.
JP1185580A 1980-02-01 1980-02-01 Metal haride lamp Pending JPS56109446A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1185580A JPS56109446A (en) 1980-02-01 1980-02-01 Metal haride lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1185580A JPS56109446A (en) 1980-02-01 1980-02-01 Metal haride lamp

Publications (1)

Publication Number Publication Date
JPS56109446A true JPS56109446A (en) 1981-08-29

Family

ID=11789332

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1185580A Pending JPS56109446A (en) 1980-02-01 1980-02-01 Metal haride lamp

Country Status (1)

Country Link
JP (1) JPS56109446A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62192552U (en) * 1986-05-29 1987-12-07

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62192552U (en) * 1986-05-29 1987-12-07

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