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FR822212A - Lighting device comprising a discharge tube filled with high pressure mercury vapor and artificially cooled - Google Patents

Lighting device comprising a discharge tube filled with high pressure mercury vapor and artificially cooled

Info

Publication number
FR822212A
FR822212A FR822212DA FR822212A FR 822212 A FR822212 A FR 822212A FR 822212D A FR822212D A FR 822212DA FR 822212 A FR822212 A FR 822212A
Authority
FR
France
Prior art keywords
high pressure
lighting device
discharge tube
pressure mercury
mercury vapor
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
Other languages
French (fr)
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
Application granted granted Critical
Publication of FR822212A publication Critical patent/FR822212A/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
    • H01J61/52—Cooling arrangements; Heating arrangements; Means for circulating gas or vapour within the discharge space
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/84—Lamps with discharge constricted by high pressure
    • H01J61/86—Lamps with discharge constricted by high pressure with discharge additionally constricted by close spacing of electrodes, e.g. for optical projection
FR822212D 1936-05-27 1937-05-25 Lighting device comprising a discharge tube filled with high pressure mercury vapor and artificially cooled Expired FR822212A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE471321X 1936-05-27

Publications (1)

Publication Number Publication Date
FR822212A true FR822212A (en) 1937-12-23

Family

ID=6541257

Family Applications (1)

Application Number Title Priority Date Filing Date
FR822212D Expired FR822212A (en) 1936-05-27 1937-05-25 Lighting device comprising a discharge tube filled with high pressure mercury vapor and artificially cooled

Country Status (2)

Country Link
FR (1) FR822212A (en)
GB (1) GB471321A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE740922C (en) * 1939-03-21 1943-10-30 Patra Patent Treuhand Arrangement for operating a water-cooled high-pressure mercury discharge lamp

Also Published As

Publication number Publication date
GB471321A (en) 1937-09-01

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