JPS55108160A - High pressure discharge lamp - Google Patents

High pressure discharge lamp

Info

Publication number
JPS55108160A
JPS55108160A JP1575379A JP1575379A JPS55108160A JP S55108160 A JPS55108160 A JP S55108160A JP 1575379 A JP1575379 A JP 1575379A JP 1575379 A JP1575379 A JP 1575379A JP S55108160 A JPS55108160 A JP S55108160A
Authority
JP
Japan
Prior art keywords
coil
emitting material
electron emitting
triple
coated
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
JP1575379A
Other languages
Japanese (ja)
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 JP1575379A priority Critical patent/JPS55108160A/en
Publication of JPS55108160A publication Critical patent/JPS55108160A/en
Pending legal-status Critical Current

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  • Discharge Lamp (AREA)

Abstract

PURPOSE: To suppress the scatter and evaporation of electron emitting material and thus achieving long life, by coating the electron emitting material only on the intermediate one of the inside coils.
CONSTITUTION: The electrode is constructed from an inside coil 7, an outside coil 8 surrounding said coil 7, and an electrode rod 9. The inside coil 7 comprises thress partial coils each consisting of a multiple coil more than triple, and provided on the electrode rod 9 from its forward end toward its backward end along the axis thereof are three partial coils, that is, a multiple coil 7a more than triple with no electron emitting material being coated thereon, a multiple coil 7b more than triple with an electron emitting material being coated thereon, and a multiple coil 7c more than triple with no electron emitting material being coated thereon.
COPYRIGHT: (C)1980,JPO&Japio
JP1575379A 1979-02-13 1979-02-13 High pressure discharge lamp Pending JPS55108160A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1575379A JPS55108160A (en) 1979-02-13 1979-02-13 High pressure discharge lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1575379A JPS55108160A (en) 1979-02-13 1979-02-13 High pressure discharge lamp

Publications (1)

Publication Number Publication Date
JPS55108160A true JPS55108160A (en) 1980-08-19

Family

ID=11897526

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1575379A Pending JPS55108160A (en) 1979-02-13 1979-02-13 High pressure discharge lamp

Country Status (1)

Country Link
JP (1) JPS55108160A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994354A (en) * 1982-11-19 1984-05-31 Matsushita Electronics Corp Flash discharge tube

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186280A (en) * 1975-01-27 1976-07-28 Mitsubishi Electric Corp HODENTOYODENKYOKU
JPS534383A (en) * 1975-12-29 1978-01-14 Matsushita Electronics Corp High pressure sodium lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5186280A (en) * 1975-01-27 1976-07-28 Mitsubishi Electric Corp HODENTOYODENKYOKU
JPS534383A (en) * 1975-12-29 1978-01-14 Matsushita Electronics Corp High pressure sodium lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5994354A (en) * 1982-11-19 1984-05-31 Matsushita Electronics Corp Flash discharge tube
JPH0454337B2 (en) * 1982-11-19 1992-08-31 Matsushita Electronics Corp

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