GB1424102A - Fluorescent lamps - Google Patents

Fluorescent lamps

Info

Publication number
GB1424102A
GB1424102A GB2486673A GB2486673A GB1424102A GB 1424102 A GB1424102 A GB 1424102A GB 2486673 A GB2486673 A GB 2486673A GB 2486673 A GB2486673 A GB 2486673A GB 1424102 A GB1424102 A GB 1424102A
Authority
GB
United Kingdom
Prior art keywords
ionizing medium
drift
envelope
portions
wall thickness
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.)
Expired
Application number
GB2486673A
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.)
IONLITE Ltd
Original Assignee
IONLITE 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 IONLITE Ltd filed Critical IONLITE Ltd
Priority to GB2486673A priority Critical patent/GB1424102A/en
Publication of GB1424102A publication Critical patent/GB1424102A/en
Expired 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
    • H01J61/56—One or more circuit elements structurally associated with the lamp

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

1424102 Fluorescent discharge lamps IONLITE Ltd 13 May 1974 [24 May 1973] 24866/73 Heading H1D In a fluorescent lamp having an envelope 10 filled with an ionizing medium, e.g. mercury vapour and argon, and electrodes 14, 15 (which may be sintered), the evelope has a portion 12 of reduced volume at or towards one electrode so that any drift of ionizing medium (e.g. mercury) results in a pressure difference which controls or counters, at least partially, the drift of the ionizing medium. The portions 11, 12 of different cross-sectional areas may be coaxial and of the same length, as shown; or the portions may form the arms of a U-tube (Fig. 2, not shown). The envelope may have constant wall thickness and progressively changing cross-section; or alternatively constant crosssection and progressively changing wall thickness.
GB2486673A 1973-05-24 1973-05-24 Fluorescent lamps Expired GB1424102A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2486673A GB1424102A (en) 1973-05-24 1973-05-24 Fluorescent lamps

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2486673A GB1424102A (en) 1973-05-24 1973-05-24 Fluorescent lamps

Publications (1)

Publication Number Publication Date
GB1424102A true GB1424102A (en) 1976-02-11

Family

ID=10218497

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2486673A Expired GB1424102A (en) 1973-05-24 1973-05-24 Fluorescent lamps

Country Status (1)

Country Link
GB (1) GB1424102A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374737A1 (en) * 1976-12-15 1978-07-13 Jenaer Glaswerk Schott & Gen LUMINOUS DISCHARGE TUBE FOR DC POWER SUPPLY WITH DOUBLE ELECTRODE SYSTEM AND ANTI-DISCHARGE CROSS-JUNCTION OF ELECTRODE CHAMBERS
WO2000019486A1 (en) * 1998-09-29 2000-04-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Gas discharge lamp with controllable length of illumination
WO2002027758A1 (en) * 2000-08-08 2002-04-04 Xihu Yu A method of completely eliminating electrophoresis effect in a dc fluorescent lamp tube
WO2006112127A1 (en) * 2005-04-14 2006-10-26 Sharp Kabushiki Kaisha Discharge fluorescent tube, method for driving discharge fluorescent tube, illuminator for display and display comprising such illuminator for display

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2374737A1 (en) * 1976-12-15 1978-07-13 Jenaer Glaswerk Schott & Gen LUMINOUS DISCHARGE TUBE FOR DC POWER SUPPLY WITH DOUBLE ELECTRODE SYSTEM AND ANTI-DISCHARGE CROSS-JUNCTION OF ELECTRODE CHAMBERS
WO2000019486A1 (en) * 1998-09-29 2000-04-06 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Gas discharge lamp with controllable length of illumination
US6407513B1 (en) 1998-09-29 2002-06-18 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh Gas-discharge lamp with controllable length of illumination
WO2002027758A1 (en) * 2000-08-08 2002-04-04 Xihu Yu A method of completely eliminating electrophoresis effect in a dc fluorescent lamp tube
WO2006112127A1 (en) * 2005-04-14 2006-10-26 Sharp Kabushiki Kaisha Discharge fluorescent tube, method for driving discharge fluorescent tube, illuminator for display and display comprising such illuminator for display
US7868551B2 (en) 2005-04-14 2011-01-11 Sharp Kabushiki Kaisha Fluorescent tube having an increasing internal diameter, a method of driving the fluorescent tube, an illuminating device for display device, and a display device having the illuminating device

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee