EP0253316A3 - Cold cathode type discharge lamp apparatus - Google Patents

Cold cathode type discharge lamp apparatus Download PDF

Info

Publication number
EP0253316A3
EP0253316A3 EP87109938A EP87109938A EP0253316A3 EP 0253316 A3 EP0253316 A3 EP 0253316A3 EP 87109938 A EP87109938 A EP 87109938A EP 87109938 A EP87109938 A EP 87109938A EP 0253316 A3 EP0253316 A3 EP 0253316A3
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
cathode electrode
lamp apparatus
cold cathode
type discharge
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.)
Withdrawn
Application number
EP87109938A
Other languages
German (de)
French (fr)
Other versions
EP0253316A2 (en
Inventor
Shouichi Iwaya
Hitoshi Masumura
Munemitsu Hamada
Hiromi Ohfuna Seisakusho Adachi
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
TDK Corp
Original Assignee
Mitsubishi Electric Corp
TDK 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
Priority claimed from JP1986108595U external-priority patent/JPH0512918Y2/ja
Priority claimed from JP1986108598U external-priority patent/JPH0514455Y2/ja
Priority claimed from JP1986108597U external-priority patent/JPH0514454Y2/ja
Application filed by Mitsubishi Electric Corp, TDK Corp filed Critical Mitsubishi Electric Corp
Publication of EP0253316A2 publication Critical patent/EP0253316A2/en
Publication of EP0253316A3 publication Critical patent/EP0253316A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • 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

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

A cold cathode type discharge lamp apparatus of the invention is composed of a discharge lamp tube, a cathode electrode member in nearly cylindrical form made of a semiconductor porcelain and including an apex made a discharge surface, a sealing support member for sealing and supporting the cathode electrode member within the tube, and a lead wire connected to the cathode electrode member. In such discharge lamp apparatus, since an electron emission material is not used in the cathode electrode but the semiconductor porcelain is used, chemical reaction due to heating is not used, thereby blackening of the light emission tube is prevented and the life becomes long.
EP87109938A 1986-07-15 1987-07-09 Cold cathode type discharge lamp apparatus Withdrawn EP0253316A3 (en)

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
JP108597/86U 1986-07-15
JP1986108595U JPH0512918Y2 (en) 1986-07-15 1986-07-15
JP1986108598U JPH0514455Y2 (en) 1986-07-15 1986-07-15
JP1986108597U JPH0514454Y2 (en) 1986-07-15 1986-07-15
JP108595/86U 1986-07-15
JP108598/86U 1986-07-15

Publications (2)

Publication Number Publication Date
EP0253316A2 EP0253316A2 (en) 1988-01-20
EP0253316A3 true EP0253316A3 (en) 1990-03-21

Family

ID=27311264

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87109938A Withdrawn EP0253316A3 (en) 1986-07-15 1987-07-09 Cold cathode type discharge lamp apparatus

Country Status (2)

Country Link
EP (1) EP0253316A3 (en)
KR (1) KR920001844B1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5585694A (en) * 1990-12-04 1996-12-17 North American Philips Corporation Low pressure discharge lamp having sintered "cold cathode" discharge electrodes
DE19616408A1 (en) * 1996-04-24 1997-10-30 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electrode for discharge lamps
DE19802160A1 (en) * 1998-01-21 1999-07-22 Siemens Ag Light source used especially in optoelectronics or as a component of an image screen or a display

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2501432A1 (en) * 1974-01-15 1975-07-17 Chemokomplex Vegyipari Gep Es VACUUM-TIGHT ELECTRODE AND PIPE END CAP AND PROCESS FOR THEIR PRODUCTION
US3911309A (en) * 1972-09-18 1975-10-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electrode comprising a porous sintered body
US4152619A (en) * 1977-10-26 1979-05-01 Westinghouse Electric Corp. HID lamp electrode comprising barium (yttrium or rare earth metal) tungstate or molybdate

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3911309A (en) * 1972-09-18 1975-10-07 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electrode comprising a porous sintered body
DE2501432A1 (en) * 1974-01-15 1975-07-17 Chemokomplex Vegyipari Gep Es VACUUM-TIGHT ELECTRODE AND PIPE END CAP AND PROCESS FOR THEIR PRODUCTION
US4152619A (en) * 1977-10-26 1979-05-01 Westinghouse Electric Corp. HID lamp electrode comprising barium (yttrium or rare earth metal) tungstate or molybdate

Also Published As

Publication number Publication date
KR880002217A (en) 1988-04-29
EP0253316A2 (en) 1988-01-20
KR920001844B1 (en) 1992-03-05

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18D Application deemed to be withdrawn

Effective date: 19920707

RIN1 Information on inventor provided before grant (corrected)

Inventor name: IWAYA, SHOUICHI

Inventor name: MASUMURA, HITOSHI

Inventor name: HAMADA, MUNEMITSU

Inventor name: ADACHI, HIROMIOHFUNA SEISAKUSHO