WO2005076313A3 - Low-pressure mercury vapor discharge lamp - Google Patents

Low-pressure mercury vapor discharge lamp Download PDF

Info

Publication number
WO2005076313A3
WO2005076313A3 PCT/IB2005/050221 IB2005050221W WO2005076313A3 WO 2005076313 A3 WO2005076313 A3 WO 2005076313A3 IB 2005050221 W IB2005050221 W IB 2005050221W WO 2005076313 A3 WO2005076313 A3 WO 2005076313A3
Authority
WO
WIPO (PCT)
Prior art keywords
discharge
discharge lamp
mode
low
pressure mercury
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.)
Ceased
Application number
PCT/IB2005/050221
Other languages
French (fr)
Other versions
WO2005076313A2 (en
Inventor
Lars R C Waumans
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.)
Koninklijke Philips NV
Original Assignee
Koninklijke Philips Electronics NV
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 Koninklijke Philips Electronics NV filed Critical Koninklijke Philips Electronics NV
Priority to EP05702720A priority Critical patent/EP1714302A2/en
Priority to US10/597,596 priority patent/US20080252218A1/en
Priority to JP2006551958A priority patent/JP2007525804A/en
Publication of WO2005076313A2 publication Critical patent/WO2005076313A2/en
Anticipated expiration legal-status Critical
Publication of WO2005076313A3 publication Critical patent/WO2005076313A3/en
Ceased 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
    • H01J61/70—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

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

A low-pressure mercury vapor discharge lamp is operable in a first mode of operation ('normal mode') and a second mode of operation ('emergency operation'). The discharge lamp comprises a discharge vessel (10) enclosing a discharge space (13) provided with a filling of mercury and an inert gas. The discharge vessel comprises electrodes (5;6) for maintaining a discharge in the discharge space while the discharge lamp operates in the first mode of operation. According to the invention, at least one of the electrodes is operated on a DC or AC power supply for drawing a discharge current (D1;D2) over the electrode while the discharge lamp operates in the second mode of operation. Preferably, both electrodes operate on a DC or AC power supply, preferably a battery, while the discharge lamp operates in the second mode of operation. The low-pressure mercury vapor discharge lamps operated according to the invention have a relatively long life.
PCT/IB2005/050221 2004-02-05 2005-01-19 Low-pressure mercury vapor discharge lamp Ceased WO2005076313A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP05702720A EP1714302A2 (en) 2004-02-05 2005-01-19 Low-pressure mercury vapor discharge lamp
US10/597,596 US20080252218A1 (en) 2004-02-05 2005-01-19 Low-Pressure Mercury Vapor Discharge Lamp
JP2006551958A JP2007525804A (en) 2004-02-05 2005-01-19 Low pressure mercury vapor discharge lamp

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP04100421 2004-02-05
EP04100421.9 2004-02-05

Publications (2)

Publication Number Publication Date
WO2005076313A2 WO2005076313A2 (en) 2005-08-18
WO2005076313A3 true WO2005076313A3 (en) 2007-01-25

Family

ID=34833730

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2005/050221 Ceased WO2005076313A2 (en) 2004-02-05 2005-01-19 Low-pressure mercury vapor discharge lamp

Country Status (5)

Country Link
US (1) US20080252218A1 (en)
EP (1) EP1714302A2 (en)
JP (1) JP2007525804A (en)
CN (1) CN1998064A (en)
WO (1) WO2005076313A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101379586B (en) * 2006-02-10 2013-03-27 皇家飞利浦电子股份有限公司 Low-pressure mercury vapor discharge lamp with amalgam
CN103430628B (en) * 2011-03-10 2016-01-13 皇家飞利浦有限公司 A method of driving a gas discharge lamp

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751398A (en) * 1986-03-18 1988-06-14 The Bodine Company Lighting system for normal and emergency operation of high intensity discharge lamps
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US5955843A (en) * 1997-06-24 1999-09-21 Hubbell Incorporated Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp
US20020047627A1 (en) * 2000-04-28 2002-04-25 Pickering Charles L. Central battery emergency lighting system

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE520653C2 (en) * 1998-02-18 2003-08-05 Pls Systems I Hestra Ab Device for use in the operation of one or more discharge lamps
JP2007537569A (en) * 2004-05-11 2007-12-20 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Low pressure mercury vapor discharge lamp and display device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4751398A (en) * 1986-03-18 1988-06-14 The Bodine Company Lighting system for normal and emergency operation of high intensity discharge lamps
US5955843A (en) * 1997-06-24 1999-09-21 Hubbell Incorporated Relay circuit for providing power from a normal or emergency power supply to ignite and drive a high intensity discharge lamp
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US20020047627A1 (en) * 2000-04-28 2002-04-25 Pickering Charles L. Central battery emergency lighting system

Also Published As

Publication number Publication date
WO2005076313A2 (en) 2005-08-18
JP2007525804A (en) 2007-09-06
CN1998064A (en) 2007-07-11
EP1714302A2 (en) 2006-10-25
US20080252218A1 (en) 2008-10-16

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