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EP0924745A3 - Fluorescent lamp and manufacturing method - Google Patents

Fluorescent lamp and manufacturing method Download PDF

Info

Publication number
EP0924745A3
EP0924745A3 EP98122236A EP98122236A EP0924745A3 EP 0924745 A3 EP0924745 A3 EP 0924745A3 EP 98122236 A EP98122236 A EP 98122236A EP 98122236 A EP98122236 A EP 98122236A EP 0924745 A3 EP0924745 A3 EP 0924745A3
Authority
EP
European Patent Office
Prior art keywords
fluorescent lamp
manufacturing
flare stem
lamp
flare
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
EP98122236A
Other languages
German (de)
French (fr)
Other versions
EP0924745A2 (en
EP0924745B1 (en
Inventor
Mamoru Fukushima
Yasuo Kobayashi
Soichiro Ogawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of EP0924745A2 publication Critical patent/EP0924745A2/en
Publication of EP0924745A3 publication Critical patent/EP0924745A3/en
Application granted granted Critical
Publication of EP0924745B1 publication Critical patent/EP0924745B1/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
    • H01J61/045—Thermic screens or reflectors
    • 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
    • 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
    • H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
    • H01J9/28—Manufacture of leading-in conductors

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

A high frequency operation fluorescent lamp (1) which can reduce a possibility of over-heat damage of a flare stem (2) at the end of its life. In the lamp, a pair of intermediate lead wires (3a, 3b) are passed through the flare stem at each end of a light emitting envelope, and an insulator (5) is provided to cover a top of the flare stem.
EP98122236A 1997-12-16 1998-11-23 Fluorescent lamp Expired - Lifetime EP0924745B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP34609697 1997-12-16
JP34609697 1997-12-16
JP16466298 1998-06-12
JP16466298A JP3527851B2 (en) 1997-12-16 1998-06-12 Fluorescent lamp, fluorescent lamp manufacturing method and fluorescent lamp device

Publications (3)

Publication Number Publication Date
EP0924745A2 EP0924745A2 (en) 1999-06-23
EP0924745A3 true EP0924745A3 (en) 1999-07-14
EP0924745B1 EP0924745B1 (en) 2003-11-12

Family

ID=26489683

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98122236A Expired - Lifetime EP0924745B1 (en) 1997-12-16 1998-11-23 Fluorescent lamp

Country Status (7)

Country Link
EP (1) EP0924745B1 (en)
JP (1) JP3527851B2 (en)
KR (1) KR100573608B1 (en)
CN (1) CN1118084C (en)
DE (1) DE69819669T2 (en)
ID (1) ID21460A (en)
TW (1) TW582620U (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6486595B1 (en) * 2000-06-19 2002-11-26 Osram Sylvania Inc. Electric lamp having press seal configuration for exhaust tube protection
TW552611B (en) * 2001-03-29 2003-09-11 Toshiba Lighting & Technology Fluorescent lamp and lighting apparatus
JP4382681B2 (en) 2005-02-03 2009-12-16 Ｎｅｃ液晶テクノロジー株式会社 Liquid crystal display
JP2007026811A (en) * 2005-07-14 2007-02-01 Nec Lighting Ltd Fluorescent lamp

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0381950A (en) * 1989-08-24 1991-04-08 Toshiba Lighting & Technol Corp Fluorescent lamp
EP0491420A1 (en) * 1990-12-17 1992-06-24 Koninklijke Philips Electronics N.V. Low-pressure mercury vapour discharge lamp
US5298834A (en) * 1990-10-30 1994-03-29 Okaya Electric Industrial Co., Ltd. Display discharge lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB863468A (en) * 1957-09-16 1961-03-22 Gen Electric Co Ltd Improvements in or relating to low pressure electric discharge lamps
NL6501884A (en) 1965-02-16 1966-08-17

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0381950A (en) * 1989-08-24 1991-04-08 Toshiba Lighting & Technol Corp Fluorescent lamp
US5298834A (en) * 1990-10-30 1994-03-29 Okaya Electric Industrial Co., Ltd. Display discharge lamp
EP0491420A1 (en) * 1990-12-17 1992-06-24 Koninklijke Philips Electronics N.V. Low-pressure mercury vapour discharge lamp

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 015, no. 254 (E - 1083) 27 June 1991 (1991-06-27) *

Also Published As

Publication number Publication date
JP3527851B2 (en) 2004-05-17
EP0924745A2 (en) 1999-06-23
KR19990063033A (en) 1999-07-26
EP0924745B1 (en) 2003-11-12
TW582620U (en) 2004-04-01
DE69819669T2 (en) 2004-09-30
ID21460A (en) 1999-06-17
DE69819669D1 (en) 2003-12-18
KR100573608B1 (en) 2006-11-30
JPH11238458A (en) 1999-08-31
CN1220481A (en) 1999-06-23
CN1118084C (en) 2003-08-13

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