EP0441387A3 - Low pressure gas discharge lamp - Google Patents

Low pressure gas discharge lamp Download PDF

Info

Publication number
EP0441387A3
EP0441387A3 EP19910101715 EP91101715A EP0441387A3 EP 0441387 A3 EP0441387 A3 EP 0441387A3 EP 19910101715 EP19910101715 EP 19910101715 EP 91101715 A EP91101715 A EP 91101715A EP 0441387 A3 EP0441387 A3 EP 0441387A3
Authority
EP
European Patent Office
Prior art keywords
low pressure
discharge lamp
gas discharge
pressure gas
lamp
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Withdrawn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
EP19910101715
Other versions
EP0441387A2 (en
Inventor
Kuniharu Kikuchi
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.)
Toshiba Lighting and Technology Corp
Original Assignee
Toshiba Lighting and Technology 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 Toshiba Lighting and Technology Corp filed Critical Toshiba Lighting and Technology Corp
Publication of EP0441387A2 publication Critical patent/EP0441387A2/en
Publication of EP0441387A3 publication Critical patent/EP0441387A3/en
Withdrawn legal-status Critical Current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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H01J61/366—Seals for leading-in conductors
    • H01J61/368—Pinched seals or analogous seals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
    • H01J61/78—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only with cold cathode; with cathode heated only by discharge, e.g. high-tension lamp for advertising
EP19910101715 1990-02-08 1991-02-07 Low pressure gas discharge lamp Withdrawn EP0441387A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2027073A JPH03233854A (en) 1990-02-08 1990-02-08 Cold cathode fluorescent lamp
JP27073/90 1990-02-08

Publications (2)

Publication Number Publication Date
EP0441387A2 EP0441387A2 (en) 1991-08-14
EP0441387A3 true EP0441387A3 (en) 1992-04-15

Family

ID=12210897

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19910101715 Withdrawn EP0441387A3 (en) 1990-02-08 1991-02-07 Low pressure gas discharge lamp

Country Status (3)

Country Link
EP (1) EP0441387A3 (en)
JP (1) JPH03233854A (en)
KR (1) KR940006312B1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6037714A (en) * 1995-09-19 2000-03-14 Philips Electronics North America Corporation Hollow electrodes for low pressure discharge lamps, particularly narrow diameter fluorescent and neon lamps and lamps containing the same
JP2004071276A (en) * 2002-08-05 2004-03-04 Nec Lighting Ltd Cold cathode lamp and electronic apparatus using cold cathode lamp

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056665A (en) * 1934-08-18 1936-10-06 Gen Electric Vapor electric discharge device
US2153009A (en) * 1935-09-10 1939-04-04 Gen Electric Electric discharge lamp

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63259958A (en) * 1987-04-16 1988-10-27 Toshiba Corp Ceramic discharge lamp

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2056665A (en) * 1934-08-18 1936-10-06 Gen Electric Vapor electric discharge device
US2153009A (en) * 1935-09-10 1939-04-04 Gen Electric Electric discharge lamp

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
INFORMATION DISPLAY. vol. 5, no. 11, November 1989, NEW YORK US pages 8 - 13; W. B. MERCER ET AL.: 'Fluorescent backlights for LCDs' *
PATENT ABSTRACTS OF JAPAN vol. 13, no. 78 (E-718)(3426) 22 February 1989 & JP-A-63 259 958 ( TOSHIBA CORP ) 27 October 1988 *

Also Published As

Publication number Publication date
KR910016044A (en) 1991-09-30
KR940006312B1 (en) 1994-07-14
JPH03233854A (en) 1991-10-17
EP0441387A2 (en) 1991-08-14

Similar Documents

Publication Publication Date Title
US5117160C1 (en) Rare gas discharge lamp
HUT57469A (en) Low pressure discharge lamp
EP0420335A3 (en) High pressure gas discharge lamp
HUT57471A (en) Low pressure discharge lamp without electrode
SG44001A1 (en) Low-pressure mercury discharge lamp
DE69318226D1 (en) High pressure gas discharge lamp
EP0550937A3 (en) Low-pressure mercury discharge lamp
EP0453652A3 (en) High pressure discharge lamp
EP0588200A3 (en) High pressure discharge lamp.
GB2257562B (en) Electrodeless low pressure discharge lamp
HUT49965A (en) High pressure metal-halogenide discharge lamp
EP0489463A3 (en) Low pressure discharge lamp
HK1000610A1 (en) Low pressure mercury vapor discharge lamp
EP0389758A3 (en) Water-cooled, low pressure gas discharge lamp
AU7402991A (en) High pressure metal vapor discharge lamp
GB8904898D0 (en) Low pressure discharge lamp
EP0473157A3 (en) Low pressure discharge lamp apparatus
EP0472100A3 (en) High-pressure discharge lamp
EP0456907A3 (en) High-pressure discharge lamp
HUT57467A (en) High pressure sodium discharge lamp
EP0516967A3 (en) High pressure discharge lamp
HU895390D0 (en) High pressure discharge lamp
EP0446462A3 (en) High-pressure discharge lamp
GB2244855B (en) Gas discharge lamps
HU900593D0 (en) High pressure discharge lamp

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19910304

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE GB

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE GB

17Q First examination report despatched

Effective date: 19940627

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19941108