GB854745A - Improvements in or relating to light sources comprising at least one electric vapourdischarge tube - Google Patents

Improvements in or relating to light sources comprising at least one electric vapourdischarge tube

Info

Publication number
GB854745A
GB854745A GB29957/59A GB2995759A GB854745A GB 854745 A GB854745 A GB 854745A GB 29957/59 A GB29957/59 A GB 29957/59A GB 2995759 A GB2995759 A GB 2995759A GB 854745 A GB854745 A GB 854745A
Authority
GB
United Kingdom
Prior art keywords
electrodes
tube
light source
adjacent
vapourdischarge
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
GB29957/59A
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 GB854745A publication Critical patent/GB854745A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07H—SUGARS; DERIVATIVES THEREOF; NUCLEOSIDES; NUCLEOTIDES; NUCLEIC ACIDS
    • C07H9/00—Compounds containing a hetero ring sharing at least two hetero atoms with a saccharide radical
    • C07H9/02—Compounds containing a hetero ring sharing at least two hetero atoms with a saccharide radical the hetero ring containing only oxygen as ring hetero atoms
    • C07H9/04—Cyclic acetals
    • 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
    • H01J61/32—Special longitudinal shape, e.g. for advertising purposes
    • H01J61/327—"Compact"-lamps, i.e. lamps having a folded discharge path
    • 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
    • H01J61/74—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of difficult vaporisable metal vapour, e.g. sodium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biochemistry (AREA)
  • Biotechnology (AREA)
  • General Health & Medical Sciences (AREA)
  • Genetics & Genomics (AREA)
  • Molecular Biology (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

854,745. Metal vapour lamps. PHILIPS ELECTRICAL INDUSTRIES Ltd. Sept. 2, 1959 [Sept. 5, 1958], No. 29957/59. Drawings to Specification. Class 39(1). A light source comprises at least one metal vapour discharge lamp, which may have a sodium filling, there being a number of straight tubular envelope portions joined by bands, and at least as many electrodes, in the source, as bends in the tubes, which are arranged so that each bend is heated to the same extent as the straight portions by electrodes which are adjacent to them. In one form a light source comprises an envelope, three parallel limbs joined by two bends so that each of two electrodes are arranged adjacent, and symmetrically to two limbs and the bend joining them. In another form the light source is formed by two U-tube shaped discharge tubes which are disposed so that the electrodes of each tube are adjacent to the bead of the other.
GB29957/59A 1958-09-05 1959-09-02 Improvements in or relating to light sources comprising at least one electric vapourdischarge tube Expired GB854745A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL854745X 1958-09-05

Publications (1)

Publication Number Publication Date
GB854745A true GB854745A (en) 1960-11-23

Family

ID=19847213

Family Applications (1)

Application Number Title Priority Date Filing Date
GB29957/59A Expired GB854745A (en) 1958-09-05 1959-09-02 Improvements in or relating to light sources comprising at least one electric vapourdischarge tube

Country Status (3)

Country Link
FR (1) FR1234566A (en)
GB (1) GB854745A (en)
NL (2) NL231157A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005017A1 (en) * 1979-02-13 1980-08-21 Westinghouse Electric Corp ELECTRIC LAMP UNIT
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507011A1 (en) * 1981-05-26 1982-12-03 Desplat Raymond DISCHARGE LAMP TUBE TYPE WITH COLD CATHODE CURVED ACCORDING TO TWO TABLECLOTHS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3005017A1 (en) * 1979-02-13 1980-08-21 Westinghouse Electric Corp ELECTRIC LAMP UNIT
US4300073A (en) * 1979-02-13 1981-11-10 Westinghouse Electric Corp. Screw-in type lighting unit having a convoluted tridimensional fluorescent lamp
US4337414A (en) * 1979-11-26 1982-06-29 Westinghouse Electric Corp. Compact fluorescent lamp having convoluted tubular envelope of tridimensional configuration, method of making such envelope, and lighting unit incorporating such lamp

Also Published As

Publication number Publication date
FR1234566A (en) 1960-10-18
NL98672C (en)
NL231157A (en)

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