GB711091A - Improvements in or relating to arc discharge tubes - Google Patents

Improvements in or relating to arc discharge tubes

Info

Publication number
GB711091A
GB711091A GB7748/52A GB774852A GB711091A GB 711091 A GB711091 A GB 711091A GB 7748/52 A GB7748/52 A GB 7748/52A GB 774852 A GB774852 A GB 774852A GB 711091 A GB711091 A GB 711091A
Authority
GB
United Kingdom
Prior art keywords
electrode
supply
tube
insulating material
main
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
GB7748/52A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical Industries 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB711091A publication Critical patent/GB711091A/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
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

711,091. Discharge lamps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 26, 1952 [March 20, 1951], No, 7748/52. Class 39(1) A fluorescent arc discharge lamp 1 of the kind , containing two main electrodes 10, activated by electron-emitting substances, and at least one auxiliary electrode 6 conductively connected to one of the main electrodes and extending through at least one third of the arc length and insulated from the other main electrode, is characterized in that each conductor 9 supplying current to a main electrode 10 and each conductor 7 connecting a main electrode 10 to an auxiliary electrode 6 is covered with insulating material 12 and 14 respectively. In the construction shown each auxiliary electrode 6 comprises a strip of conductive material composed of graphite enamel and a binder having a width of about 3 mm. and extending substantially throughout the length of the tube on top of the fluorescent coating 5. Each strip has a resistance of about 3000 ohms and is connected through the metal ribbon 7, which is insulated as described in Specification 690,472, and through a short metal wire 8 to one of the current supply members 9 of a wire electrode 10 activated, for example, by strontium or barium compounds. In the drawing the auxiliary electrodes 6 are shown diametrically opposite to one another but their spacing'may be smaller, e.g. it may be 15 mm. in the case of a tube 120 cms. long and having an internal diameter of about 35 mm. The insulating material 14, 12 covering the metal ribbons 7 and the supply conductors 9 respectively and also insulating material 13 covering the wires 8 is made of potassium water glass, glazing, alumina or similar substance. The tube is filled with argon at a pressure of about 3 mm. of mercury and contains a small quantity of mercury. The lamp can be operated from an A.C. supply in series with an inductor 2 or from a D.C. supply in series with a resistor, for example an incandescent lamp.
GB7748/52A 1951-03-29 1952-03-26 Improvements in or relating to arc discharge tubes Expired GB711091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL300410X 1951-03-29

Publications (1)

Publication Number Publication Date
GB711091A true GB711091A (en) 1954-06-23

Family

ID=19783237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7748/52A Expired GB711091A (en) 1951-03-29 1952-03-26 Improvements in or relating to arc discharge tubes

Country Status (5)

Country Link
US (1) US2733368A (en)
BE (1) BE510237A (en)
CH (1) CH300410A (en)
FR (1) FR1053119A (en)
GB (1) GB711091A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1028685B (en) * 1956-08-01 1958-04-24 Patra Patent Treuhand Electric discharge lamp with internal ignition, in particular fluorescent lamp
US2938137A (en) * 1956-10-22 1960-05-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Electric discharge lamp with connected starting strip
US3013175A (en) * 1957-05-01 1961-12-12 Sylvania Electric Prod High output discharge lamp
US2961566A (en) * 1958-06-18 1960-11-22 Sylvania Electric Prod Fluorescent lamp
US2966606A (en) * 1958-06-18 1960-12-27 Sylvania Electric Prod Fluorescent lamp
US4358701A (en) * 1980-12-08 1982-11-09 Gte Products Corporation Discharge lamps having internal starting aid capacitively coupled to one of the electrodes
US4575656A (en) * 1980-12-08 1986-03-11 Gte Products Corporation Starting aid for non-linear discharge lamps and method of making same
US5319282A (en) * 1991-12-30 1994-06-07 Winsor Mark D Planar fluorescent and electroluminescent lamp having one or more chambers
US5343116A (en) * 1992-12-14 1994-08-30 Winsor Mark D Planar fluorescent lamp having a serpentine chamber and sidewall electrodes
US5479069A (en) * 1994-02-18 1995-12-26 Winsor Corporation Planar fluorescent lamp with metal body and serpentine channel
US5903096A (en) * 1997-09-30 1999-05-11 Winsor Corporation Photoluminescent lamp with angled pins on internal channel walls
US5914560A (en) * 1997-09-30 1999-06-22 Winsor Corporation Wide illumination range photoluminescent lamp
US6091192A (en) * 1998-02-02 2000-07-18 Winsor Corporation Stress-relieved electroluminescent panel
US6100635A (en) * 1998-02-02 2000-08-08 Winsor Corporation Small, high efficiency planar fluorescent lamp
US6114809A (en) * 1998-02-02 2000-09-05 Winsor Corporation Planar fluorescent lamp with starter and heater circuit
US6127780A (en) * 1998-02-02 2000-10-03 Winsor Corporation Wide illumination range photoluminescent lamp
US6075320A (en) * 1998-02-02 2000-06-13 Winsor Corporation Wide illumination range fluorescent lamp
US6218776B1 (en) 1998-12-30 2001-04-17 Honeywell International Inc. Enhanced brightness of flat fluorescent lamp
US6762556B2 (en) 2001-02-27 2004-07-13 Winsor Corporation Open chamber photoluminescent lamp

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2009223A (en) * 1933-06-10 1935-07-23 Gen Electric Gaseous electric discharge lamp device
GB446833A (en) * 1934-11-06 1936-05-06 British Thomson Houston Co Ltd Improvements in and relating to electric discharge lamps
DE636027C (en) * 1935-06-06 1936-09-30 Patra Patent Treuhand Electric light tubes with electrodes attached to the ends, in particular glow electrodes, and wire helix housed inside the tube
BE481281A (en) * 1939-02-15
US2291965A (en) * 1939-08-30 1942-08-04 Gen Electric Electrical discharge device
US2444397A (en) * 1945-03-27 1948-06-29 Sylvania Electric Prod Electric discharge lamp
US2445692A (en) * 1945-10-11 1948-07-20 Gen Electric Ultraviolet ray generator
US2491854A (en) * 1946-04-06 1949-12-20 Gen Electric Starting strip for electric discharge devices
US2504498A (en) * 1947-05-14 1950-04-18 Gen Electric Starting and operating circuit for electric discharge devices
US2542352A (en) * 1947-06-10 1951-02-20 Gen Electric Lead wire for fluorescent lamps
US2508118A (en) * 1948-03-03 1950-05-16 Gen Electric Starting strip for electric discharge devices

Also Published As

Publication number Publication date
FR1053119A (en) 1954-02-01
CH300410A (en) 1954-07-31
BE510237A (en)
US2733368A (en) 1956-01-31

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