EP2169703A2 - High pressure discharge lamp - Google Patents

High pressure discharge lamp Download PDF

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Publication number
EP2169703A2
EP2169703A2 EP09168934A EP09168934A EP2169703A2 EP 2169703 A2 EP2169703 A2 EP 2169703A2 EP 09168934 A EP09168934 A EP 09168934A EP 09168934 A EP09168934 A EP 09168934A EP 2169703 A2 EP2169703 A2 EP 2169703A2
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EP
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Prior art keywords
discharge lamp
pressure discharge
lamp according
thallium
tlj
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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.)
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EP09168934A
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German (de)
French (fr)
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EP2169703A3 (en
Inventor
Andreas Genz
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Osram GmbH
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Osram GmbH
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Publication of EP2169703A3 publication Critical patent/EP2169703A3/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/125—Selection of substances for gas fillings; Specified operating pressure or temperature having an halogenide as principal component

Definitions

  • the invention relates to a high-pressure discharge lamp according to the preamble of claim 1.
  • Such lamps are in particular high-pressure discharge lamps with a ceramic discharge vessel or quartz glass vessel for general lighting.
  • the US Pat. No. 4,992,700 discloses a high pressure discharge lamp using a metal halide fill.
  • the high-pressure discharge lamp is used to generate green radiation and contains bromide or iodide of thallium as the metal halide.
  • the object of the present invention is to provide a high-pressure discharge lamp with metal halide filling, which achieves the best possible maintenance.
  • Colored lamps are gaining increasing market significance as an effect light in architectural lighting.
  • the invention relates to green emitting metal halide lamps. Besides the good maintenance there are basically even more goals: 1. high radiation power in the countryside. 2. High color saturation.
  • TlJ The fillings used to date for green emission usually use TlJ.
  • TlBr was also investigated but never used.
  • the use of a mixture has never been seriously considered, as it promised no additional benefits, but is more expensive to produce since the mixture must be controlled and adjusted.
  • a filling of a mixture TlBr + TlJ shows a better maintenance than the previous filling of TlJ on the one hand and pure TlBr and a mixture of TlJ + TlBr + TlCl on the other hand.
  • the maintenance ie the constancy of the power radiated in the green spectral range is thereby improved, without deteriorating the other important variable, the color saturation.
  • the proportion of TlJ is at least 25 wt .-% and at most 75 wt .-%.
  • the filling amount of the total Tl halide is between 0.1 and 1 mg per ml discharge volume. Particularly preferred is a value between 0.2 and 1.0 mg / ml for lamps in the power range from 35 to 150W and a value between 0.1 and 0.6 mg / ml for lamps from 175 to 1000W.
  • the inventive concept is particularly suitable for small and medium power lamps in the range 15 to 1000 W.
  • FIG. 1a schematically shows a metal halide lamp 1. It consists of a discharge vessel 2 made of quartz glass, in which two electrodes 3 are inserted. The discharge vessel has a central part 5 and two ends 4. At the ends sit two bruises. 6
  • the discharge vessel 2 is surrounded by an outer bulb 7.
  • the discharge vessel 2 is supported in the outer bulb by means of a rack including a short and long power supply 11a and 11b.
  • the discharge vessel contains a filling which typically comprises Hg (3 to 30 mg / cm 3 ) and 0.1 to 1 mg / cm 3 halide of thallium.
  • a filling typically comprises Hg (3 to 30 mg / cm 3 ) and 0.1 to 1 mg / cm 3 halide of thallium.
  • argon is used under a pressure of 30 to 300 hPa cold. As a result, a green-emitting metal halide lamp is realized.
  • FIG. 1b shows a second embodiment with a discharge vessel 2 made of quartz glass, on which an integrated outer bulb 10 is attached without a frame is needed.
  • the filling is similar to the embodiment of the FIG. 1a ,
  • FIG. 2 shows a diagram in which the maintenance of different fillings of Tl-halide for a 250 W lamp were compared. It shows that pure TlBr (curve b) and pure TlJ (curve a) show by far the worst behavior.
  • the radiation power in the green spectral range decreases from the reference point after 100 hours up to 6000 hours to a maximum of 80% when using mixtures.
  • mixtures of TlJ and TlBr show significantly better values if the proportion of TlJ lies between 25 (curve d) and 75% by weight (curve c).
  • Outstanding values are achieved when the proportion of TII is in the range of 40 to 60% by weight. Shown is the behavior for 60% by weight (curve e) and 50% by weight (curve f).
  • FIG. 3 shows a diagram for 400 W lamps, in which the maintenance of a mixture 55 wt .-% TlJ with 45 wt .-% TlBr (curve a) is compared with pure TlJ (curve b) and TlBr (curve c) on the one hand, and on the other hand, with a triple mixture (curve d) of proportions of TlJ (70 wt .-%), TlBr (20 wt .-%) and TlCl (10 wt .-%).
  • TlJ 70 wt .-%
  • TlBr 20 wt .-%
  • TlCl 10 wt .-%
  • Table 1 shows the photometric data of various metal halide lamps with quartz glass flask according to FIG. 1a and 1 b.
  • Tab. 1 Type Figure. 1b 70W Fig. 1b 150W Fig. 1a 250W Fig. 1b -400W MH filling amount 55% by weight TlJ + 45% by weight TlBr 0.3 mg 0.8 mg 0.9 mg 1.5 mg volume 0.7 ml 1.8 ml 5.2 ml 8.0 ml Saturation at 100h 38% 43% 53% 48% Luminous flux at 100h 5 200 lm 10 500 lm 23 000 lm 34 000 lm Radiation power in the green 510 to 540 nm at 100h 5 W 10W 29W 41W Maintenance after 6000h 80% 80% 90% 90% Hg amount in mg 8.0 17.0 29.0 62.5

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  • Discharge Lamp (AREA)

Abstract

The discharge lamp i.e. metal halide lamp (1), has an external piston (7) surrounding a discharge volume unit (2). The discharge volume unit includes filling containing thallium halides e.g. thallium iodide and thallium bromide, mercury and inert gas e.g. neon, argon, krypton and xenon, where portion of thallium iodide amounts to 25 percentage to 75 percentage of weight of sum of weight of both thallium iodide and thallium bromide. Content of the mercury is selected in a range of 3 to 30 milligram per cubic centimeters.

Description

Technisches GebietTechnical area

Die Erfindung geht aus von einer Hochdruckentladungslampe gemäß dem Oberbegriff des Anspruchs 1. Derartige Lampen sind insbesondere Hochdruckentladungslampen mit keramischem Entladungsgefäß oder auch Quarzglasgefäß für die Allgemeinbeleuchtung.The invention relates to a high-pressure discharge lamp according to the preamble of claim 1. Such lamps are in particular high-pressure discharge lamps with a ceramic discharge vessel or quartz glass vessel for general lighting.

Stand der TechnikState of the art

Die US 4 992 700 offenbart eine Hochdruckentladungslampe, bei der eine Metallhalogenidfüllung verwendet wird. Die Hochdruckentladungslampe dient zur Erzeugung grüner Strahlung und enthält als Metallhalogenid Bromid oder Jodid von Thallium.The US Pat. No. 4,992,700 discloses a high pressure discharge lamp using a metal halide fill. The high-pressure discharge lamp is used to generate green radiation and contains bromide or iodide of thallium as the metal halide.

Darstellung der ErfindungPresentation of the invention

Die Aufgabe der vorliegenden Erfindung ist es, eine Hochdruckentladungslampe mit Metallhalogenidfüllung bereitzustellen, die eine möglichst gute Maintenance erreicht.The object of the present invention is to provide a high-pressure discharge lamp with metal halide filling, which achieves the best possible maintenance.

Diese Aufgabe wird gelöst durch die kennzeichnenden Merkmale des Anspruchs 1.This object is achieved by the characterizing features of claim 1.

Besonders vorteilhafte Ausgestaltungen finden sich in den abhängigen Ansprüchen.Particularly advantageous embodiments can be found in the dependent claims.

Farbige Lampen gewinnen eine zunehmende Marktbedeutung als Effektlicht in der Architekturbeleuchtung. Die Erfindung betrifft grün emittierende Metallhalogenidlampen. Dabei gibt es neben der guten Maintenance grundsätzlich noch weitere Ziele: 1. hohe Strahlungsleistung im Grünen. 2. Hohe Farbsättigung.Colored lamps are gaining increasing market significance as an effect light in architectural lighting. The invention relates to green emitting metal halide lamps. Besides the good maintenance there are basically even more goals: 1. high radiation power in the countryside. 2. High color saturation.

Die bisher eingesetzten Füllungen für grüne Emission verwenden normalerweise TlJ. Theoretisch wurde auch TlBr untersucht, aber nie eingesetzt. Die Verwendung einer Mischung wurde nie ernsthaft in Erwägung gezogen, da sie keine zusätzlichen Vorteile versprach, jedoch aufwendiger herzustellen ist, da die Mischung kontrolliert und eingestellt werden muss.The fillings used to date for green emission usually use TlJ. Theoretically, TlBr was also investigated but never used. The use of a mixture has never been seriously considered, as it promised no additional benefits, but is more expensive to produce since the mixture must be controlled and adjusted.

Überraschenderweise zeigt eine Füllung aus einer Mischung TlBr+TlJ eine bessere Maintenance als die bisherige Füllung aus TlJ einerseits und reinem TlBr sowie einer Mischung aus TlJ+TlBr+TlCl andererseits.Surprisingly, a filling of a mixture TlBr + TlJ shows a better maintenance than the previous filling of TlJ on the one hand and pure TlBr and a mixture of TlJ + TlBr + TlCl on the other hand.

Die Maintenance, also die Konstanz der im grünen Spektralbereich abgestrahlten Leistung wird dadurch verbessert, ohne die andere wichtige Größe, die Farbsättigung, zu verschlechtern.The maintenance, ie the constancy of the power radiated in the green spectral range is thereby improved, without deteriorating the other important variable, the color saturation.

Dabei gelten folgende Grenzwerte: der Anteil von TlJ liegt bei mindestens 25 Gew.-% und höchstens 75 Gew.-%.The following limit values apply: the proportion of TlJ is at least 25 wt .-% and at most 75 wt .-%.

Die Füllmenge des gesamten Tl-Halogenids liegt zwischen 0,1 und 1 mg pro ml Entladungsvolumen. Besonders bevorzugt ist ein Wert zwischen 0,2 und 1,0 mg/ml für Lampen im Leistungsbereich von 35 bis 150W und ein Wert zwischen 0,1 und 0,6 mg/ml für Lampen von 175 bis 1000W.The filling amount of the total Tl halide is between 0.1 and 1 mg per ml discharge volume. Particularly preferred is a value between 0.2 and 1.0 mg / ml for lamps in the power range from 35 to 150W and a value between 0.1 and 0.6 mg / ml for lamps from 175 to 1000W.

Das erfindungsgemäße Konzept ist vor allem für Lampen kleiner und mittlerer Leistung im Bereich 15 bis 1000 W geeignet.The inventive concept is particularly suitable for small and medium power lamps in the range 15 to 1000 W.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Im Folgenden soll die Erfindung anhand mehrerer Ausführungsbeispiele näher erläutert werden. Die Figuren zeigen:

Fig. 1
eine Hochdruckentladungslampe mit Entladungsgefäß mit separatem Außenkolben (a) und integriertem Außenkolben (b);
Fig. 2
ein Diagramm, das die Maintenance für verschiedene Füllungen zeigt bei 250 W-Lampen;
Fig. 3
ein Diagramm, das die Maintenance für verschiedene Füllungen zeigt bei 400 W-Lampen.
In the following, the invention will be explained in more detail with reference to several embodiments. The figures show:
Fig. 1
a high-pressure discharge lamp with discharge vessel having a separate outer bulb (a) and integrated outer bulb (b);
Fig. 2
a diagram showing the maintenance for different fillings at 250 W lamps;
Fig. 3
a diagram showing maintenance for various fillings on 400 W lamps.

Bevorzugte Ausführungsform der ErfindungPreferred embodiment of the invention

Figur 1a zeigt schematisch eine Metallhalogenidlampe 1. Sie besteht aus einem Entladungsgefäß 2 aus Quarzglas, in das zwei Elektroden 3 eingeführt sind. Das Entladungsgefäß hat einen zentralen Teil 5 und zwei Enden 4. An den Enden sitzen zwei Quetschungen 6. FIG. 1a schematically shows a metal halide lamp 1. It consists of a discharge vessel 2 made of quartz glass, in which two electrodes 3 are inserted. The discharge vessel has a central part 5 and two ends 4. At the ends sit two bruises. 6

Das Entladungsgefäß 2 ist von einem Außenkolben 7 umgeben. Das Entladungsgefäß 2 ist im Außenkolben mittels eines Gestells, das eine kurze und lange Stromzuführung 11a und 11b beinhaltet, gehaltert.The discharge vessel 2 is surrounded by an outer bulb 7. The discharge vessel 2 is supported in the outer bulb by means of a rack including a short and long power supply 11a and 11b.

Das Entladungsgefäß enthält eine Füllung, die typisch Hg (3 bis 30 mg/cm3) und 0,1 bis 1 mg/cm3 Halogenid von Thallium umfasst. Als Edelgas wird Argon unter einem Druck von 30 bis 300 hPa kalt verwendet. Dadurch wird eine grün emittierende Metallhalogenidlampe realisiert.The discharge vessel contains a filling which typically comprises Hg (3 to 30 mg / cm 3 ) and 0.1 to 1 mg / cm 3 halide of thallium. As a noble gas, argon is used under a pressure of 30 to 300 hPa cold. As a result, a green-emitting metal halide lamp is realized.

Figur 1b zeigt ein zweites Ausführungsbeispiel mit einem Entladungsgefäß 2 aus Quarzglas, an dem ein integrierter Außenkolben 10 angesetzt ist ohne dass ein Gestell benötigt wird. Die Füllung ist ähnlich wie im Ausführungsbeispiel der Figur 1a. FIG. 1b shows a second embodiment with a discharge vessel 2 made of quartz glass, on which an integrated outer bulb 10 is attached without a frame is needed. The filling is similar to the embodiment of the FIG. 1a ,

Figur 2 zeigt ein Diagramm, bei dem die Maintenance verschiedener Füllungen an Tl-Halogenid für eine 250 W-Lampe miteinander verglichen wurden. Dabei zeigt sich, dass reines TlBr (Kurve b) und reines TlJ (Kurve a) mit Abstand das schlechteste Verhalten zeigen. Die Strahlungsleistung im Grünen Spektralbereich nimmt vom Bezugspunkt nach 100 Std. bis hin zu 6000 Std. auf höchstens 80% ab, wenn man Mischungen verwendet. Insbesondere zeigen Mischungen aus TlJ und TlBr deutlich bessere Werte, wenn der Anteil des TlJ zwischen 25 (Kurve d) und 75 Gew.-% (Kurve c) liegt. Herausragende Werte werden erzielt, wenn der Anteil des TlJ im Bereich 40 bis 60 Gew.-% liegt. Gezeigt ist das Verhalten für 60 Gew.-% (Kurve e) und 50 Gew.-% (Kurve f). FIG. 2 shows a diagram in which the maintenance of different fillings of Tl-halide for a 250 W lamp were compared. It shows that pure TlBr (curve b) and pure TlJ (curve a) show by far the worst behavior. The radiation power in the green spectral range decreases from the reference point after 100 hours up to 6000 hours to a maximum of 80% when using mixtures. In particular, mixtures of TlJ and TlBr show significantly better values if the proportion of TlJ lies between 25 (curve d) and 75% by weight (curve c). Outstanding values are achieved when the proportion of TII is in the range of 40 to 60% by weight. Shown is the behavior for 60% by weight (curve e) and 50% by weight (curve f).

Figur 3 zeigt ein Diagramm für 400 W-Lampen, bei dem die Maintenance einer Mischung 55 Gew.-% TlJ mit 45 Gew.-% TlBr (Kurve a) verglichen wird mit reinem TlJ (Kurve b) und TlBr (Kurve c) einerseits, und andererseits mit einer Tripel-Mischung (Kurve d) aus Anteilen von TlJ (70 Gew.-%), TlBr (20 Gew.-%) und TlCl (10 Gew.-%). Es zeigt sich, dass die Zugabe von Chlor ähnlich nachteilig wie die Verwendung reiner Halogenide ist. Es darf daher höchstens in kleinen Mengen zugesetzt werden. FIG. 3 shows a diagram for 400 W lamps, in which the maintenance of a mixture 55 wt .-% TlJ with 45 wt .-% TlBr (curve a) is compared with pure TlJ (curve b) and TlBr (curve c) on the one hand, and on the other hand, with a triple mixture (curve d) of proportions of TlJ (70 wt .-%), TlBr (20 wt .-%) and TlCl (10 wt .-%). It turns out that the addition of chlorine is similarly disadvantageous as the use of pure halides. It may therefore be added at most in small quantities.

Tabelle 1 zeigt die lichttechnischen Daten verschiedener Metallhalogenidlampen mit Quarzglaskolben gemäß Figur 1a und 1 b. Tab. 1 Typ Figur. 1b 70W Fig. 1b 150W Fig. 1a 250W Fig. 1b-400W MH-Füllmenge 55 Gew.-% TlJ+45 Gew.-% TlBr 0,3 mg 0,8 mg 0,9 mg 1,5 mg Volumen 0,7 ml 1,8 ml 5,2 ml 8,0 ml Farbsättigung bei 100h 38% 43% 53% 48% Lichtstrom bei 100h 5 200 lm 10 500 lm 23 000 lm 34 000 lm Strahlungsleistung im Grünen 510 bis 540 nm bei 100h 5 W 10W 29W 41W Maintenance nach 6000h 80% 80% 90% 90% Hg Menge in mg 8,0 17,0 29,0 62,5 Table 1 shows the photometric data of various metal halide lamps with quartz glass flask according to FIG. 1a and 1 b. Tab. 1 Type Figure. 1b 70W Fig. 1b 150W Fig. 1a 250W Fig. 1b -400W MH filling amount 55% by weight TlJ + 45% by weight TlBr 0.3 mg 0.8 mg 0.9 mg 1.5 mg volume 0.7 ml 1.8 ml 5.2 ml 8.0 ml Saturation at 100h 38% 43% 53% 48% Luminous flux at 100h 5 200 lm 10 500 lm 23 000 lm 34 000 lm Radiation power in the green 510 to 540 nm at 100h 5 W 10W 29W 41W Maintenance after 6000h 80% 80% 90% 90% Hg amount in mg 8.0 17.0 29.0 62.5

Claims (8)

Hochdruckentladungslampe mit einem Kolben, der ein Entladungsvolumen umgibt, wobei eine Füllung, die Thalliumhalogenide, Quecksilber und Edelgas aus der Gruppe Neon, Argon, Krypton, Xenon enthält, im Entladungsvolumen untergebracht ist, dadurch gekennzeichnet, dass die Füllung gleichzeitig die Halogenide von Jod und Brom enthält, wobei der Anteil von TlJ mindestens 25 Gew.-% und höchstens 75 Gew.-% beträgt, bezogen auf die Summe von TlJ und TlBr.High-pressure discharge lamp with a piston surrounding a discharge volume, wherein a filling containing thallium halides, mercury and noble gas from the group neon, argon, krypton, xenon, is housed in the discharge volume, characterized in that the filling simultaneously the halides of iodine and bromine contains, wherein the proportion of TlJ is at least 25 wt .-% and at most 75 wt .-%, based on the sum of TlJ and TlBr. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der Anteil des TlJ mindestens 40%, insbesondere mindestens 50%, beträgt.High-pressure discharge lamp according to claim 1, characterized in that the proportion of TlI is at least 40%, especially at least 50%. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der Anteil des TlJ höchstens 60% beträgt.High-pressure discharge lamp according to claim 1, characterized in that the proportion of TlI is at most 60%. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass das Edelgas Argon, Krypton oder Neon ist.High-pressure discharge lamp according to claim 1, characterized in that the noble gas argon, krypton or neon. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der Kaltfülldruck des Edelgases im Bereich 30 bis 300 hPa gewählt ist.High-pressure discharge lamp according to claim 1, characterized in that the cold filling pressure of the noble gas is selected in the range 30 to 300 hPa. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass der Gehalt an Hg im Bereich 3 bis 30 mg/cm3 gewählt ist.High-pressure discharge lamp according to claim 1, characterized in that the content of Hg is in the range 3 to 30 mg / cm is selected. 3 Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Lampe eine farbig emittierende Lampe für die Effektbeleuchtung ist.High-pressure discharge lamp according to claim 1, characterized in that the lamp is a lamp emitting colored light for the effect. Hochdruckentladungslampe nach Anspruch 1, dadurch gekennzeichnet, dass die Füllmenge des gesamten Tl-Halogenids zwischen 0,1 und 1 mg pro ml Entladungsvolumen liegt.High-pressure discharge lamp according to claim 1, characterized in that the filling quantity of Tl halide total between 0.1 and 1 mg per ml discharge volume is located.
EP09168934A 2008-09-29 2009-08-28 High pressure discharge lamp Withdrawn EP2169703A3 (en)

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DE102005035191A1 (en) * 2005-07-27 2007-02-01 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Low-pressure gas discharge lamp with new gas filling
CN105655229A (en) * 2014-11-12 2016-06-08 广东雪莱特光电科技股份有限公司 Low-power rail locomotive high-strength gas discharge xenon metal halide lamp
CN105679640B (en) * 2014-11-18 2018-04-10 广东雪莱特光电科技股份有限公司 The xenon lamp of green light

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EP2169703A3 (en) 2011-02-09
US20100079068A1 (en) 2010-04-01
DE102008049476A1 (en) 2010-04-01
CN101714494A (en) 2010-05-26

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