GB1424102A - Fluorescent lamps - Google Patents
Fluorescent lampsInfo
- 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
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.
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)
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 |
-
1973
- 1973-05-24 GB GB2486673A patent/GB1424102A/en not_active Expired
Cited By (6)
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 |