JPS5755054A - High pressure sodium lamp - Google Patents

High pressure sodium lamp

Info

Publication number
JPS5755054A
JPS5755054A JP13090480A JP13090480A JPS5755054A JP S5755054 A JPS5755054 A JP S5755054A JP 13090480 A JP13090480 A JP 13090480A JP 13090480 A JP13090480 A JP 13090480A JP S5755054 A JPS5755054 A JP S5755054A
Authority
JP
Japan
Prior art keywords
electrodes
luminous tube
end caps
lamp
high pressure
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
JP13090480A
Other languages
Japanese (ja)
Inventor
Yoshiro Ogata
Haruo Yamazaki
Takashi Ikeda
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
Matsushita Electric Industrial 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 Matsushita Electronics Corp, Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electronics Corp
Priority to JP13090480A priority Critical patent/JPS5755054A/en
Publication of JPS5755054A publication Critical patent/JPS5755054A/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
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/88—Lamps with discharge constricted by high pressure with discharge additionally constricted by envelope

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

PURPOSE:To improve efficiency of a lamp by defining the length of electrodes and setting the proper conditions for operating the lamp. CONSTITUTION:End caps 2, 3 are fixed on both ends of a luminous tube 1 made of light-transmitting single crystal alumina. Electrodes 6, 7 or electrode conductors 4, 5 whose ends are provided with electrodes 6, 7 are fixed on these end caps 2, 3. The internal volume of the luminous tube is less than 2cm<3>, in which sodium is charged together with a buffer metal. The ratio of We/l of the wall load We(W/ cm<2>) obtained by dividing the rated power fed into the luminous tube 1 by the internal surface of the luminous tube 1 between electrodes 6 and 7 to the shortest length l(cm) from ends of electrodes 6, 7 on the discharging space side to the inner ends of end caps 2, 3 is adjusted to more than 28.
JP13090480A 1980-09-19 1980-09-19 High pressure sodium lamp Pending JPS5755054A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13090480A JPS5755054A (en) 1980-09-19 1980-09-19 High pressure sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13090480A JPS5755054A (en) 1980-09-19 1980-09-19 High pressure sodium lamp

Publications (1)

Publication Number Publication Date
JPS5755054A true JPS5755054A (en) 1982-04-01

Family

ID=15045437

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13090480A Pending JPS5755054A (en) 1980-09-19 1980-09-19 High pressure sodium lamp

Country Status (1)

Country Link
JP (1) JPS5755054A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62164114U (en) * 1986-04-07 1987-10-19

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124574A (en) * 1978-02-22 1979-09-27 Philips Nv Highhtension sodium vapor discharge lamp
JPS55161360A (en) * 1979-05-28 1980-12-15 Philips Nv High voltage sodium vapor discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54124574A (en) * 1978-02-22 1979-09-27 Philips Nv Highhtension sodium vapor discharge lamp
JPS55161360A (en) * 1979-05-28 1980-12-15 Philips Nv High voltage sodium vapor discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62164114U (en) * 1986-04-07 1987-10-19
JPH0413140Y2 (en) * 1986-04-07 1992-03-27

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