EP0378338A3 - Discharge tube - Google Patents

Discharge tube Download PDF

Info

Publication number
EP0378338A3
EP0378338A3 EP19900300190 EP90300190A EP0378338A3 EP 0378338 A3 EP0378338 A3 EP 0378338A3 EP 19900300190 EP19900300190 EP 19900300190 EP 90300190 A EP90300190 A EP 90300190A EP 0378338 A3 EP0378338 A3 EP 0378338A3
Authority
EP
European Patent Office
Prior art keywords
electrode
discharge tube
sintered metallic
electrode assemblies
assemblies
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
EP19900300190
Other languages
German (de)
French (fr)
Other versions
EP0378338A2 (en
EP0378338B1 (en
Inventor
Yoriyuki Nieda
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.)
TOKYO DENSOKU KK
Original Assignee
TOKYO DENSOKU KK
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 TOKYO DENSOKU KK filed Critical TOKYO DENSOKU KK
Publication of EP0378338A2 publication Critical patent/EP0378338A2/en
Publication of EP0378338A3 publication Critical patent/EP0378338A3/en
Application granted granted Critical
Publication of EP0378338B1 publication Critical patent/EP0378338B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • H01J61/067—Main electrodes for low-pressure discharge lamps

Landscapes

  • Discharge Lamp (AREA)
  • Lasers (AREA)

Abstract

A discharge tube having a pair of opposite electrode assemblies disposed in a discharge space (6) defined by a peripheral wall and charged with gas, and an a.c. source (11) connected at one end to one of the pair of electrode assemblies and at the other end to the other of the electrode assemblies, each of said opposite electrode assemblies comprising a sintered metallic electrode (2) for emitting electrons and a filament electrode (3) disposed closely adjacent to the sintered metallic electrode (2), for emitting thermoelectrons, and the sintered metallic electrode and the filament electrode being electrically connected in parallel by means of the associated lead wires (8).
EP90300190A 1989-01-12 1990-01-08 Discharge tube Expired - Lifetime EP0378338B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP1005753A JPH02186551A (en) 1989-01-12 1989-01-12 Discharge tube
JP5753/89 1989-01-12

Publications (3)

Publication Number Publication Date
EP0378338A2 EP0378338A2 (en) 1990-07-18
EP0378338A3 true EP0378338A3 (en) 1991-06-12
EP0378338B1 EP0378338B1 (en) 1997-04-02

Family

ID=11619881

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90300190A Expired - Lifetime EP0378338B1 (en) 1989-01-12 1990-01-08 Discharge tube

Country Status (4)

Country Link
EP (1) EP0378338B1 (en)
JP (1) JPH02186551A (en)
KR (1) KR920010057B1 (en)
DE (1) DE69030333D1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2599192Y2 (en) * 1990-07-19 1999-08-30 東京電測 株式会社 Discharge tube
JPH04174951A (en) * 1990-07-19 1992-06-23 Tokyo Densoku Kk Discharge tube
US5585694A (en) * 1990-12-04 1996-12-17 North American Philips Corporation Low pressure discharge lamp having sintered "cold cathode" discharge electrodes
DE9202638U1 (en) * 1992-02-28 1992-04-16 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
JP3498072B2 (en) 2001-06-25 2004-02-16 炳霖 ▲楊▼ Light emitter for discharge lamp
KR101206681B1 (en) * 2011-07-13 2012-12-03 (주) 상일시스템 Cold cathode fluorescent lamp of high efficiency and long life for illumination

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046941A (en) * 1934-10-27 1936-07-07 Gen Electric Gaseous electric discharge device
US2314134A (en) * 1942-01-08 1943-03-16 Colonial Lighting Co Inc Gaseous discharge device
CH319769A (en) * 1953-03-06 1957-02-28 Mueller Felix Ing Dr Electrode for discharge vessels
WO1987004562A1 (en) * 1986-01-17 1987-07-30 Sidefact Limited Flat light source

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5750760A (en) * 1980-09-13 1982-03-25 Matsushita Electric Works Ltd Electrode for discharge lamp
KR910010108B1 (en) * 1988-05-27 1991-12-16 도오시바 라이텍크 가부시기가이샤 Single end-sealed metal halide lamp

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2046941A (en) * 1934-10-27 1936-07-07 Gen Electric Gaseous electric discharge device
US2314134A (en) * 1942-01-08 1943-03-16 Colonial Lighting Co Inc Gaseous discharge device
CH319769A (en) * 1953-03-06 1957-02-28 Mueller Felix Ing Dr Electrode for discharge vessels
WO1987004562A1 (en) * 1986-01-17 1987-07-30 Sidefact Limited Flat light source

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 6, no. 123 (E-177), 8th July 1982, page 1001; & JP-A-57 050 760 (MATSUSHITA) 25-03-1982 *

Also Published As

Publication number Publication date
KR920010057B1 (en) 1992-11-13
JPH0546048B2 (en) 1993-07-12
EP0378338A2 (en) 1990-07-18
EP0378338B1 (en) 1997-04-02
KR900012321A (en) 1990-08-03
DE69030333D1 (en) 1997-05-07
JPH02186551A (en) 1990-07-20

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