GB457740A - Improvements in electric discharge tubes - Google Patents

Improvements in electric discharge tubes

Info

Publication number
GB457740A
GB457740A GB15801/36A GB1580136A GB457740A GB 457740 A GB457740 A GB 457740A GB 15801/36 A GB15801/36 A GB 15801/36A GB 1580136 A GB1580136 A GB 1580136A GB 457740 A GB457740 A GB 457740A
Authority
GB
United Kingdom
Prior art keywords
tube
envelope
cap
electrodes
electric discharge
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
GB15801/36A
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
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 filed Critical Philips Gloeilampenfabrieken NV
Publication of GB457740A publication Critical patent/GB457740A/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
    • H01J61/34—Double-wall vessels or containers
    • 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
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
    • 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

  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Packaging Of Annular Or Rod-Shaped Articles, Wearing Apparel, Cassettes, Or The Like (AREA)

Abstract

457,740. Discharge apparatus. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. June 5, 1936, No. 15801. Convention date, Aug. 26, 1935. Addition to 392,796 and 414,018. [Class 39 (i)] In a metal-vapour discharge tube 1 which is surrounded by a double-walled exhausted envelope 3, and is provided at the bottom thereof with a centring member accom. modated in a cavity in the envelope, as described in the parent Specifications, the centring member consists of an external metal auxiliary electrode 7. The tube is provided with incandescent electrodes 2 and a sodium filling and the electrode 7, which may be U- shaped, is connected to one of the electrodes 2. A cap 4 or the envelope embraces the cap 5 of the tube and the space between the tube and the en. velope may be filled with air
GB15801/36A 1931-12-23 1936-06-05 Improvements in electric discharge tubes Expired GB457740A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
NL392796X 1931-12-23
NL401240X 1932-07-27
DE457740X 1935-08-26

Publications (1)

Publication Number Publication Date
GB457740A true GB457740A (en) 1936-12-04

Family

ID=31950151

Family Applications (3)

Application Number Title Priority Date Filing Date
GB24529/32A Expired GB392796A (en) 1931-12-23 1932-09-02 Improvements in or relating to electric discharge tubes
GB19741/33A Expired GB401240A (en) 1931-12-23 1933-07-12 Improvements in or relating to electric discharge tubes
GB15801/36A Expired GB457740A (en) 1931-12-23 1936-06-05 Improvements in electric discharge tubes

Family Applications Before (2)

Application Number Title Priority Date Filing Date
GB24529/32A Expired GB392796A (en) 1931-12-23 1932-09-02 Improvements in or relating to electric discharge tubes
GB19741/33A Expired GB401240A (en) 1931-12-23 1933-07-12 Improvements in or relating to electric discharge tubes

Country Status (6)

Country Link
US (1) US2056648A (en)
BE (1) BE390343A (en)
DE (1) DE652752C (en)
FR (2) FR741891A (en)
GB (3) GB392796A (en)
NL (1) NL45860C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2610289A (en) * 1949-02-23 1952-09-09 Arthur A Brainerd Enclosed internally heated electric discharge lamp luminaire for variable temperature service
US2849598A (en) * 1953-09-08 1958-08-26 Willis L Lipscomb Non-glare lighting fixture
US3001060A (en) * 1957-07-22 1961-09-19 Esquire Inc Floodlight
FR2649827B1 (en) * 1989-07-13 1992-06-12 Sodern DEVICE FOR HEATING AN ALUMINA TUBE AND DISCHARGE TUBE PROVIDED WITH SUCH A DEVICE
CN108039004A (en) * 2017-12-26 2018-05-15 佛山市道静科技有限公司 A kind of Intelligent road Operation Van based on wireless telecommunications

Also Published As

Publication number Publication date
FR741891A (en) 1933-02-22
DE652752C (en) 1937-11-08
GB401240A (en) 1933-11-09
FR47656E (en) 1937-06-16
NL45860C (en) 1939-06-15
BE390343A (en) 1932-09-23
GB392796A (en) 1933-05-25
US2056648A (en) 1936-10-06

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