EP1615255A3 - Fluorescent lamp - Google Patents

Fluorescent lamp Download PDF

Info

Publication number
EP1615255A3
EP1615255A3 EP05106230A EP05106230A EP1615255A3 EP 1615255 A3 EP1615255 A3 EP 1615255A3 EP 05106230 A EP05106230 A EP 05106230A EP 05106230 A EP05106230 A EP 05106230A EP 1615255 A3 EP1615255 A3 EP 1615255A3
Authority
EP
European Patent Office
Prior art keywords
lamp
tube
lamp tube
mercury
cavity
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Withdrawn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
EP05106230A
Other languages
German (de)
French (fr)
Other versions
EP1615255A2 (en
Inventor
Onn Fah MASS TECHNOLOGY Foo (H.K.) Ltd.
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.)
Mass Technology HK Ltd
Original Assignee
Mass Technology HK 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 Mass Technology HK Ltd filed Critical Mass Technology HK Ltd
Publication of EP1615255A2 publication Critical patent/EP1615255A2/en
Publication of EP1615255A3 publication Critical patent/EP1615255A3/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Withdrawn legal-status Critical Current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
    • H01J61/30—Vessels; Containers
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/30—Vessels; Containers
    • H01J61/33—Special shape of cross-section, e.g. for producing cool spot
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/24—Means for obtaining or maintaining the desired pressure within the vessel
    • 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

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

Abstract

The present invention relates to a fluorescent lamp using new cold-end technology or an enveloped fluorescent lamp with high surface load. The present invention is comprised of a lamp tube, cathode, stem cap and wire, such that one end of the wire connected to the cathode is fixed on the stem cap and the other end of the wire is led out from the lamp tube. At least one cavity tube connecting through the lamp tube is disposed on side of at least one lamp tube. Advantages of the fluorescent lamp includes: (1) the temperature of cavity tube is not influenced directly with electrical arc since there is no discharge through appended cavity tube, thus mercury-vapor pressure adjustment with cold-end is made possible; furthermore, mercury-vapor pressure is decreased significantly on energy saving lamps with high power or lamps in high environmental temperature; (2) by adjusting the length and/or position of cavity tube, mercury-vapor pressure in the lamp tube can be adjusted efficiently; (3) if amalgam is required for the lamp tube, the adjustment work becomes easy and efficient by positioning the amalgam at the coldest point; with adding auxiliary cathode selectively, good luminous flux is formed rapidly when the lamp is turned on initially; (4) the effective service life of the lamp tube is lengthened since the harmful materials to luminous flux output produced during lamp operation are collected at the cold-end of cavity tube.
EP05106230A 2004-07-08 2005-07-07 Fluorescent lamp Withdrawn EP1615255A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN200420073880 2004-07-08
CNB2004100783883A CN100423174C (en) 2004-07-08 2004-09-27 Fluorescent lamp

Publications (2)

Publication Number Publication Date
EP1615255A2 EP1615255A2 (en) 2006-01-11
EP1615255A3 true EP1615255A3 (en) 2006-07-12

Family

ID=34796413

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05106230A Withdrawn EP1615255A3 (en) 2004-07-08 2005-07-07 Fluorescent lamp

Country Status (4)

Country Link
EP (1) EP1615255A3 (en)
JP (1) JP2006024571A (en)
KR (1) KR100749585B1 (en)
CN (1) CN100423174C (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103021790A (en) * 2011-09-27 2013-04-03 周明久 Lighting light tube with fluorescent lamp filaments functioning as polar plates

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09147795A (en) * 1995-11-28 1997-06-06 Matsushita Electron Corp Compact self-ballasted fluorescent lamp
EP1069595A1 (en) * 1999-07-14 2001-01-17 Matsushita Electronics Corporation Fluorescent disharge tube and bulb-shaped fluorescent lamp using the same
JP2003346712A (en) * 2002-05-29 2003-12-05 Hitachi Lighting Ltd Fluorescent lamp, and lighting device using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1133824B (en) * 1960-09-05 1962-07-26 Patra Patent Treuhand Mercury low pressure discharge lamp for increased electrical and / or thermal load, especially fluorescent lamp
JPH08250067A (en) * 1995-03-14 1996-09-27 Matsushita Electron Corp Bulb shape fluorescent lamp
CN2364551Y (en) * 1999-02-12 2000-02-16 马勤 Cold cathode tube with cold end
CN2378828Y (en) * 1999-05-26 2000-05-17 马士科技有限公司 Cold-end device for low-voltage mercury vapour discharge lamp
CN1418371A (en) * 2001-01-15 2003-05-14 皇家菲利浦电子有限公司 Fluorescent Lamp and method for manufactruing the same
CN2599739Y (en) * 2002-09-21 2004-01-14 赖勇清 Energy-saving lamp tube with additional cold end tube
CN2604000Y (en) * 2003-03-11 2004-02-18 黄甜仔 Spiral fluorescent tube

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH09147795A (en) * 1995-11-28 1997-06-06 Matsushita Electron Corp Compact self-ballasted fluorescent lamp
EP1069595A1 (en) * 1999-07-14 2001-01-17 Matsushita Electronics Corporation Fluorescent disharge tube and bulb-shaped fluorescent lamp using the same
JP2003346712A (en) * 2002-05-29 2003-12-05 Hitachi Lighting Ltd Fluorescent lamp, and lighting device using the same

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 10 31 October 1997 (1997-10-31) *
PATENT ABSTRACTS OF JAPAN vol. 2003, no. 12 5 December 2003 (2003-12-05) *

Also Published As

Publication number Publication date
KR100749585B1 (en) 2007-08-14
CN100423174C (en) 2008-10-01
EP1615255A2 (en) 2006-01-11
CN1610053A (en) 2005-04-27
JP2006024571A (en) 2006-01-26
KR20060050002A (en) 2006-05-19

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