GB955076A - Improvements in gas discharge lamps - Google Patents

Improvements in gas discharge lamps

Info

Publication number
GB955076A
GB955076A GB3984459A GB3984459A GB955076A GB 955076 A GB955076 A GB 955076A GB 3984459 A GB3984459 A GB 3984459A GB 3984459 A GB3984459 A GB 3984459A GB 955076 A GB955076 A GB 955076A
Authority
GB
United Kingdom
Prior art keywords
envelope
roughened
portions
mercury
extension
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
GB3984459A
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.)
Egyesuelt Izzolampa es Villamossagi Rt
Original Assignee
Egyesuelt Izzolampa es Villamossagi Rt
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 Egyesuelt Izzolampa es Villamossagi Rt filed Critical Egyesuelt Izzolampa es Villamossagi Rt
Publication of GB955076A publication Critical patent/GB955076A/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
    • H01J61/30—Vessels; Containers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/02—Vessels; Containers; Shields associated therewith; Vacuum locks
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H01J61/523—Heating or cooling particular parts of the lamp
    • 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)

Abstract

955,076. Fluorescent discharge lamps. EGYESULT IZZOLAMPA ES VILLAMOSSAGI R.T. Nov. 24, 1959 [Nov. 25, 1958], No. 39844/59. Drawings to Specification. Heading H1D. A low pressure fluorescent discharge lamp has a vitreous envelope filled with rare gas and mercury vapour and having a major portion or portions of the outer surface of the envelope material unroughened and a minor portion or portions roughened and of such an area that the temperature and partial pressure of the mercury vapour adjacent the roughened portion or portions is reduced because of the increased heat dissipation from the roughened portion or portions. The roughened portions are produced chemically or abrasively as in frosting techniques and can amount to 0.5-4% of the total surface area of the envelope. The roughened portion of the envelope can be at the middle or at each end of the envelope and can be bandshaped. Additional means can be provided for reducing the vapour pressure of the mercury and can comprise cool chambers formed by shields between the electrodes and the ends of the envelope for condensation of the mercury, the outer surfaces of the cool chambers being at least partly roughened. Alternatively a knob-like extension can be formed on the envelope between the electrodes, the outer wall of the extension and/or the envelope surrounding the extension being roughened. The roughened portion or portions can be on the under surface or the side of the envelope or in two symmetrical positions and can be in the form of a letter, number, drawing or inscription for advertising. The filling can be 60 mg. of mercury and a mixture of argon and neon, containing 20% argon by volume, at a pressure of 2 mms.
GB3984459A 1958-11-25 1959-11-24 Improvements in gas discharge lamps Expired GB955076A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
HUEE000595 1958-11-25

Publications (1)

Publication Number Publication Date
GB955076A true GB955076A (en) 1964-04-15

Family

ID=10995125

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3984459A Expired GB955076A (en) 1958-11-25 1959-11-24 Improvements in gas discharge lamps

Country Status (5)

Country Link
BE (1) BE585030A (en)
CH (1) CH377445A (en)
DE (1) DE1807088U (en)
GB (1) GB955076A (en)
NL (1) NL245727A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350691A1 (en) * 1976-05-04 1977-12-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HALOGENIDE DISCHARGE LAMP
FR2472265A1 (en) * 1979-12-20 1981-06-26 Gen Electric DISCHARGE LAMP WITH HIGH INTENSITY METAL VAPORS
GB2281148A (en) * 1993-08-21 1995-02-22 Samsung Display Devices Co Ltd High intensity discharge lamp
EP0987737A1 (en) * 1998-09-18 2000-03-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fluorescent lamp
FR2882611A1 (en) * 2005-02-28 2006-09-01 Clarence Bouvant Neon lighting tube for decorative and/or informative lighting, has frosted surface extending on entire cylindrical part of tube, where junction zone between two opposite ends of two successive tubes is null
WO2009065752A2 (en) * 2007-11-23 2009-05-28 Osram Gesellschaft mit beschränkter Haftung Lamp

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2850966B1 (en) 2003-02-10 2005-03-18 Rhodia Polyamide Intermediates PROCESS FOR PRODUCING DINITRIL COMPOUNDS
FR2854891B1 (en) 2003-05-12 2006-07-07 Rhodia Polyamide Intermediates PROCESS FOR PREPARING DINITRILES
WO2007046799A1 (en) 2005-10-18 2007-04-26 Invista Technologies S.A R.L. Process of making 3-aminopentanenitrile
EP2395010B1 (en) 2006-03-17 2016-07-13 Invista Technologies S.à.r.l. Method for the purification of triorganophosphites by treatment with a basic additive
US7919646B2 (en) 2006-07-14 2011-04-05 Invista North America S.A R.L. Hydrocyanation of 2-pentenenitrile
US7880028B2 (en) 2006-07-14 2011-02-01 Invista North America S.A R.L. Process for making 3-pentenenitrile by hydrocyanation of butadiene
WO2008157218A1 (en) 2007-06-13 2008-12-24 Invista Technologies S.A.R.L. Process for improving adiponitrile quality
EP2229353B1 (en) 2008-01-15 2018-01-03 INVISTA Textiles (U.K.) Limited Hydrocyanation of pentenenitriles
WO2009091771A2 (en) 2008-01-15 2009-07-23 Invista Technologies S.A R.L Process for making and refining 3-pentenenitrile, and for refining 2-methyl-3-butenenitrile
ES2526868T3 (en) 2008-10-14 2015-01-16 Invista Technologies S.À.R.L. Preparation procedure for 2-alkyl-secondary-4,5-di- (alkylnormal) phenols
CN102471218B (en) 2009-08-07 2014-11-05 因温斯特技术公司 Hydrogenation and esterification to form diesters

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2350691A1 (en) * 1976-05-04 1977-12-02 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh HALOGENIDE DISCHARGE LAMP
FR2472265A1 (en) * 1979-12-20 1981-06-26 Gen Electric DISCHARGE LAMP WITH HIGH INTENSITY METAL VAPORS
GB2281148A (en) * 1993-08-21 1995-02-22 Samsung Display Devices Co Ltd High intensity discharge lamp
GB2281148B (en) * 1993-08-21 1997-09-17 Samsung Display Devices Co Ltd High-intensity discharge lamp
EP0987737A1 (en) * 1998-09-18 2000-03-22 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Fluorescent lamp
FR2882611A1 (en) * 2005-02-28 2006-09-01 Clarence Bouvant Neon lighting tube for decorative and/or informative lighting, has frosted surface extending on entire cylindrical part of tube, where junction zone between two opposite ends of two successive tubes is null
WO2009065752A2 (en) * 2007-11-23 2009-05-28 Osram Gesellschaft mit beschränkter Haftung Lamp
WO2009065752A3 (en) * 2007-11-23 2009-12-23 Osram Gesellschaft mit beschränkter Haftung Lamp

Also Published As

Publication number Publication date
CH377445A (en) 1964-05-15
NL245727A (en) 1900-01-01
BE585030A (en) 1960-03-16
DE1807088U (en) 1960-03-03

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