DE721706C - Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer - Google Patents

Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer

Info

Publication number
DE721706C
DE721706C DEP73996D DEP0073996D DE721706C DE 721706 C DE721706 C DE 721706C DE P73996 D DEP73996 D DE P73996D DE P0073996 D DEP0073996 D DE P0073996D DE 721706 C DE721706 C DE 721706C
Authority
DE
Germany
Prior art keywords
lamp
double
pressure mercury
particular high
luminophore layer
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
DEP73996D
Other languages
German (de)
Inventor
Dr Hermann Krefft
Dr Alfred Ruettenauer
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to DEP73996D priority Critical patent/DE721706C/en
Application granted granted Critical
Publication of DE721706C publication Critical patent/DE721706C/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09KMATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K11/00Luminescent, e.g. electroluminescent, chemiluminescent materials
    • C09K11/02Use of particular materials as binders, particle coatings or suspension media therefor
    • C09K11/025Use of particular materials as binders, particle coatings or suspension media therefor non-luminescent particle coatings or suspension media

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)

Description

Doppelwandige Metalldampfentladungslampe, insbesondere Quecksilberhochdruckdampflampe, mit Luminophorschicht Um die Lichtfarbe und Lichtausbeute elektrischer Metalldampfentladungslampen, insbesondere Quecksilberhochdruckdampflampen, zu verbessern, wird vielfach von einer Luminophorschicht Gebrauch gemacht, die, sofern die Lampe ein doppelwandiges Gefäß besitzt, meist im luftdicht abgeschlossenen Raum zwischen Innengefäß und Außengefäß untergebracht wird, damit sie nicht durch die unmittelbare Wirkung der- Entladung schnell -zerstört wird. Bei einer derartigen Unterbringung der Liuninophorschicht im Zwischenraum eines doppelwandigen Lampengefäßes muß natürlich das Innengefäß aus Quarzglas oder aus .einem für ultraviolette, Strahlen genügend durchlässigen quarzähnlichen Glase bestehen. Trotz einer derartigen geschützten Unterbringung der Luminophorschicht findet dennoch eine langsame Abnahme des Lumineszenzlichtes statt, die, wie eingehende Untersuchungen ergeben haben, nicht auf eine verringerte Strahlenaussendung des Entladungsbogens bzw. der Entladungssäule, sondern auf eine Veränderung des Luminophors zurückzuführen ist.Double-walled metal vapor discharge lamp, in particular high pressure mercury vapor lamp, with luminophore layer To change the light color and light output of electric metal vapor discharge lamps, In particular, high-pressure mercury lamps to improve, is often from one Luminophore layer made use of which, provided the lamp was a double-walled vessel usually in the airtight space between the inner vessel and the outer vessel is housed so that it is not affected by the immediate effect of the- discharge is quickly destroyed. With such an accommodation of the Liuninophorschicht In the space between a double-walled lamp vessel, of course, the inner vessel must made of quartz glass or of one that is sufficiently permeable for ultraviolet rays quartz-like glasses exist. Despite such sheltered accommodation the luminophore layer nevertheless finds a slow decrease in the luminescent light instead, which, as in-depth studies have shown, are not reduced to a reduced level Radiation emission of the discharge arc or the discharge column, but on a Change in the luminophore is due.

Dieser Nachteil bisher bekannter Metalldampfentladungslampen mit Innengefäß aus Quarzglas oder quarzähnlichem Glase und im luftdicht abgeschlossenen Raum zwischen Innengefäß und Außengefäß untergebrachter Luminophorschicht wird vermieden, wenn erfindungsgemäß der Zwischenraum nach Entfernen aller anderen Gase mit reinem Sauerstoff gefüllt ist. Durch diese Füllung des Gefäßzivischenraumes werden offenbar die selbst bei bester Entlüftung des Zwischenraumes und weitgehendster Entgasung seiner Wandungen im Laufe der Brenndauer von der Wandung abgegebenen Spuren von Wasserstoff oder Kohlenoxyd, die sonst reduzierend auf den Luminophor einwirken, unschädlich gemacht. - Als Füllung für den Gefäßzwischenraum hat sich besonders eine Füllung von reinem Sauerstoff unter einem Druck von io bis 2o mm Quecksilbersäule bewährt.This disadvantage of previously known metal vapor discharge lamps with an inner vessel made of quartz glass or quartz-like glass and in the airtight space between Inner vessel and outer vessel accommodated luminophore layer is avoided if according to the invention the space after removal of all other gases with pure oxygen is filled. This filling of the space between the vessels reveals the self with the best ventilation of the space and the most extensive degassing of its walls traces of hydrogen emitted by the wall during the burning period or Carbon oxides, which otherwise have a reducing effect on the luminophore, are rendered harmless. - A particularly suitable filling for the space between the vessels Filling with pure oxygen under a pressure of 10 to 20 mm of mercury proven.

Man hat zwar für doppelwandige Metalldampfentladungslampen mit an der Innenwandung des Außengefäßes angebrachter Luminophorschicht schon vorgeschlagen, den Raum zwischen Innengefäß und Außengefäß nicht zu evakuieren und sogar mit der Luft kommunizierend einzurichten. Die hierbei den Zwischenraum anfüllende Luft wirkt jedoch, da sie stets reduzierend wirkende Beimengungen, wie z. B. Kohlenwasserstoffdämpfe, Staub sowie Feuchtigkeit, enthält, schädlich auf die Luminophorschicht ein. Das gleiche tritt ein, wenn der Zwischenraum, wie bei doppelwandigen Glühlampen bekamst ist, nur zum Teil entlüftet wird.One has indeed for double-walled metal vapor discharge lamps with Luminophore layer attached to the inner wall of the outer vessel has already been proposed, not to evacuate the space between the inner vessel and the outer vessel and even with the To set up air communicating. The air that fills the space is effective However, since they always have a reducing additive, such as. B. hydrocarbon vapors, Dust, as well as moisture, is harmful to the luminophore layer. That The same occurs when the space in between, as with double-walled incandescent lamps, is obtained is only partially vented.

Die Anwendung findende Luminophorschicht richtet sich nach der gewünschten Lichtfarbe und besteht z. B. bei der Verwendung einer Quecksilberhochdruckdampflampe mit ultraviolettdurchlässigem Innengefäß aus einer Zinkkadmiumsulfidschicht oder einer C,alciumwolframatschicht, die auf der Innenwandung des aus gewöhnlichem Glase bestehenden Außengefäßes angebracht ist.The luminophore layer used depends on the desired one Light color and consists z. B. when using a high pressure mercury vapor lamp with an ultraviolet-permeable inner vessel made of a zinc cadmium sulfide layer or a C, alcium tungstate layer on the inner wall of the ordinary glass existing outer vessel is attached.

Claims (1)

PATENTANSPRUCH: Doppelwandige Metalldampfentladungslampe, insbesondere Quecksilberhochdruckdampflampe, bei der das Innengefäß aus Quarzglas oder einem quarzähnlichen Glase besteht und im luftdicht abgeschlossenen Raum zwischen Innengefäß und Außengefäß eine Luminophorschicht untergebracht ist, dadurch gekennzeichnet, daß der Zwischenraum nach Entfernen aller anderen Gase mit reinem Sauerstoff gefüllt ist, der vorzugsweise unter einem Druck von io bis 2o mm Quecksilbersäule steht.PATENT CLAIM: Double-walled metal vapor discharge lamp, in particular High-pressure mercury vapor lamp in which the inner vessel is made of quartz glass or a Quartz-like glass and in the airtight space between the inner vessel and a luminophore layer is housed in the outer vessel, characterized in that that the space is filled with pure oxygen after all other gases have been removed is, which is preferably under a pressure of 10 to 20 mm of mercury.
DEP73996D 1936-10-21 1936-10-21 Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer Expired DE721706C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP73996D DE721706C (en) 1936-10-21 1936-10-21 Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP73996D DE721706C (en) 1936-10-21 1936-10-21 Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer

Publications (1)

Publication Number Publication Date
DE721706C true DE721706C (en) 1942-06-16

Family

ID=7392446

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP73996D Expired DE721706C (en) 1936-10-21 1936-10-21 Double-walled metal vapor discharge lamp, in particular high-pressure mercury vapor lamp, with a luminophore layer

Country Status (1)

Country Link
DE (1) DE721706C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1018547B (en) * 1954-01-05 1957-10-31 British Thomson Houston Co Ltd Electric high pressure mercury vapor discharge lamp
DE969346C (en) * 1948-03-27 1958-06-19 Gen Electric Electric high pressure discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE969346C (en) * 1948-03-27 1958-06-19 Gen Electric Electric high pressure discharge lamp
DE1018547B (en) * 1954-01-05 1957-10-31 British Thomson Houston Co Ltd Electric high pressure mercury vapor discharge lamp

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