GB669068A - Improvements in or relating to electric discharge tubes - Google Patents

Improvements in or relating to electric discharge tubes

Info

Publication number
GB669068A
GB669068A GB15516/49A GB1551649A GB669068A GB 669068 A GB669068 A GB 669068A GB 15516/49 A GB15516/49 A GB 15516/49A GB 1551649 A GB1551649 A GB 1551649A GB 669068 A GB669068 A GB 669068A
Authority
GB
United Kingdom
Prior art keywords
tube
layer
electrode
conductive layer
stay wire
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
GB15516/49A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
Philips Electronics NV
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 Gloeilampenfabrieken NV, Philips Electronics NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB669068A publication Critical patent/GB669068A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/92—Means forming part of the tube for the purpose of providing electrical connection to it
    • 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
    • H01J5/08—Vessels; Containers; Shields associated therewith; Vacuum locks provided with coatings on the walls thereof; Selection of materials for the coatings
    • 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
    • H01J61/541—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch
    • H01J61/542—Igniting arrangements, e.g. promoting ionisation for starting using a bimetal switch and an auxiliary electrode inside the vessel
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S315/00—Electric lamp and discharge devices: systems
    • Y10S315/01—Fluorescent lamp circuits with more than two principle electrodes

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

669,068. Electric discharge tubes. PHILIPS ELECTRICAL, Ltd. June 10, 1949 [June 15, 1948], No. 15516/49. Class 39 (i). In a fluorescent discharge lamp or a cathoderay tube 1 in which an electrically conductive layer 2 is applied to the inner surface of the tube wall, the said layer having applied to it, at least part of the time, an electric voltage by means of a bi-metallic element 8, the latter, at least in the non-heated condition, engages the conductive layer 2 and is arranged so that electrical contact between the bimetallic element, and the conductive layer is broken when the bimetallic element is sufficiently heated. The layer 2 can be made of silver. The bi-metallic strip 8 is secured to the stay wire of the electrode 6 which is covered with highly electronemissive material, the elements 6, 8 and stem 3 constituting a single unit which is introduced into the end of the tube 1 whilst the element 8 is heated by a gas flame. The inner surface of the tube may be coated with a fluorescent layer. The bi-metallic element may be supported on a separate stay wire in the stem 3 and this stay wire may be brought into electrical contact with the electrode 6 internally or externally of the discharge tube. The electrode 6 may be provided with two supply wires.
GB15516/49A 1948-06-15 1949-06-10 Improvements in or relating to electric discharge tubes Expired GB669068A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL272938X 1948-06-15

Publications (1)

Publication Number Publication Date
GB669068A true GB669068A (en) 1952-03-26

Family

ID=19782004

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15516/49A Expired GB669068A (en) 1948-06-15 1949-06-10 Improvements in or relating to electric discharge tubes

Country Status (7)

Country Link
US (1) US2598241A (en)
BE (1) BE489630A (en)
CH (1) CH272938A (en)
DE (1) DE810533C (en)
FR (1) FR988241A (en)
GB (1) GB669068A (en)
NL (2) NL71609C (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2658161A (en) * 1952-01-09 1953-11-03 Rauland Corp Image-reproducing device
US2699594A (en) * 1952-02-27 1955-01-18 Sylvania Electric Prod Method of assembling semiconductor units
US2790941A (en) * 1952-03-27 1957-04-30 Sylvania Electric Prod Terminal lead construction and method, and semiconductor unit
US3440488A (en) * 1965-06-24 1969-04-22 Microdot Inc System for producing illumination of progressive portions of a gas-filled luminescent tube
US4006381A (en) * 1975-08-28 1977-02-01 Rca Corporation CRT with thermally-set nitinol getter spring
DE19610387A1 (en) * 1996-03-16 1997-09-18 Bosch Gmbh Robert Gas discharge lamp, in particular for motor vehicle headlights

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2114535A (en) * 1933-10-24 1938-04-19 Kirsten Lighting Corp Gas arc lamp
US2110597A (en) * 1934-09-18 1938-03-08 Westinghouse Electric & Mfg Co Discharge lamp
US2113314A (en) * 1935-01-10 1938-04-05 Westinghouse Electric & Mfg Co Discharge lamp
US2177105A (en) * 1937-07-03 1939-10-24 Westinghouse Electric & Mfg Co Vapor discharge lamp
US2291965A (en) * 1939-08-30 1942-08-04 Gen Electric Electrical discharge device
US2491854A (en) * 1946-04-06 1949-12-20 Gen Electric Starting strip for electric discharge devices

Also Published As

Publication number Publication date
NL71609C (en)
DE810533C (en) 1951-08-13
FR988241A (en) 1951-08-24
CH272938A (en) 1951-01-15
NL141001B (en)
US2598241A (en) 1952-05-27
BE489630A (en)

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