EP0722616B1 - Lampe a decharge d'halogenure metallique - Google Patents

Lampe a decharge d'halogenure metallique Download PDF

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Publication number
EP0722616B1
EP0722616B1 EP94919552A EP94919552A EP0722616B1 EP 0722616 B1 EP0722616 B1 EP 0722616B1 EP 94919552 A EP94919552 A EP 94919552A EP 94919552 A EP94919552 A EP 94919552A EP 0722616 B1 EP0722616 B1 EP 0722616B1
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
metal halide
outer bulb
metal
lamp according
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 - Lifetime
Application number
EP94919552A
Other languages
German (de)
English (en)
Other versions
EP0722616A1 (fr
Inventor
Clemens Barthelmes
Andreas Dr. Hohlfeld
Jürgen Dr. VOM SCHEIDT
Dietrich Dr. Fromm
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
Publication of EP0722616A1 publication Critical patent/EP0722616A1/fr
Application granted granted Critical
Publication of EP0722616B1 publication Critical patent/EP0722616B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—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
    • 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
    • H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • H01J61/827—Metal halide arc lamps

Definitions

  • the invention is based on a metal halide discharge lamp according to the preamble of the claim 1.
  • metal halide lamps primarily low power, especially about 50-250 W.
  • a rough guideline can be that the total amount (in mg) of metal halides can be limited to a maximum of three times the volume of the discharge vessel (in cm 3 ).
  • the condition for the filling quantity can be specified in such a way that the pure proportion of metals with a small ion radius (especially sodium) - which therefore tend to diffuse and are hereinafter referred to as "diff.
  • Metals - expressed in Micromol ( ⁇ mol) in the filling is less than six times the discharge volume, expressed in cubic centimeters (cm 3 ). Expressed as a formula, the following applies: specific diff. Metal content ⁇ 6 ⁇ mol / cm 3 .
  • Metal content is considered to be a value of the simple discharge volume (in cm 3 ), ie specific diff. Metal content ⁇ 1 ⁇ mol / cm 3 . Preferred values of the diff. Metal content are in the range of four times the discharge volume.
  • a small ion radius is understood to be a maximum of about 0.1 nm, such as that of Na + or Li + .
  • the invention is particularly for sodium rare earth filling systems suitable. Similar good results are achieved with Na Sc fillings.
  • the main area of application is lamps with Color temperatures in the order of 4000 K. (Light color neutral white), where the sodium content less than with warm white light colors (approx. 3000 K color temperature) can be selected.
  • the high-pressure discharge lamp 1 shown schematically in FIG. 1 with a power consumption of 70 W consists of an essentially cylindrical discharge vessel 2 made of quartz glass, which is bulged in the middle. It is closed at both ends with a pinch 3, through which the two current leads 4, 5 are inserted in a vacuum-tight manner by means of foils 6 and thereby establish an electrical connection to the electrodes 7 (made of thoriated tungsten) attached in the discharge vessel.
  • the ends of the discharge vessel are provided with a heat-reflecting coating 8.
  • the filling with the light color neutral white consists of the metals Hg and Na with additions of other rare earth metals and the halogens Br and / or I.
  • a preferred metal halide filling is 0.45 mg NaI, in each case 0.27 mg of the rare earth metal halides DyI 3 , HoI 3 and TmI 3 and 0.13 mg T1I.
  • the discharge volume is 0.7 cm 3 .
  • the discharge vessel 2 is located in a coaxially arranged cylindrical outer bulb 9 made of quartz glass, the smallest wall distance being only about 2-3 mm.
  • a getter 10 is arranged potential-free in this outer bulb and runs parallel to one of the current leads 4.
  • the outer bulb 9 is likewise closed at its two ends with a pinch, the electrical connection of the axially arranged power supply lines 4, 5 to the outside being effected in each case via a vacuum-tight foil pinch 11 and ceramic base parts 12 (with plate contacts).
  • the current leads 4, 5 hold the discharge vessel 2 in the outer bulb 9, one of the current leads 5 being provided with an expansion loop 13 to compensate for length tolerances.
  • the need for an expansion loop 13 depends on the dimensions of the lamp.
  • the two current leads 4, 5 are enclosed over their entire length in the outer bulb 9 by a stocking-like sleeve 14 made of quartz silk.
  • This material is temperature resistant up to 1200 ° C.
  • One example is the type SR 05 silicate hose from Lippmann (Schire / Germany).
  • This sleeve has 0.3 mm wall thickness and an inner diameter of 0.4 mm. It consists of more than 95% Si0 2 .
  • a ceramic fiber hose is also suitable for this or quartz fiber hose.
  • a tempered glass or quartz glass tube or a rigid ceramic sleeve In the case of straight power supplies, one can do less flexible material, e.g. a tempered glass or quartz glass tube or a rigid ceramic sleeve, be used.
  • a high temperature resistance is essential as well as sufficient UV absorption.
  • the invention is closed on all sides Discharge vessels that are closed on both sides Outer pistons are attached approximately axially, applicable.
  • the discharge vessel can in particular a quartz glass burner squeezed on both sides or be a ceramic tube closed on both sides.
  • the outer bulb is in particular a pinched on both sides Tempered glass or quartz glass pistons.
  • a ceramic suspension, for example ZrO 2, applied directly as a coating to the power supply is also particularly suitable as the sheathing.
  • This technology also has manufacturing advantages over separate sleeves and is also suitable for flexible power supplies.
  • the layer thickness is approximately 0.15 mm. To improve the adhesion, up to 15%, in particular 10% by weight of boron oxide is added.

Abstract

Une lampe à décharge (1) d'halogénure métallique comportant un récipient coaxial de décharge (2) et un tube extérieur (9) est remplie de métaux qui tendent à se diffuser. Leur teneur spécifique est inférieure à 6 νmol/cm3. Les amenées de courant (4, 5) sont entourées sur une grande partie de leur longueur par une gaine (14) qui absorbe le rayonnement ultraviolet.

Claims (9)

  1. Lampe à décharge à halogénure métallique comprenant une enceinte (2) de décharge fermée des deux côtés et renfermant deux électrodes et une atmosphère ayant des métaux ayant tendance à diffuser dans le verre au quartz ou dans la céramique à des températures allant jusqu'à 1200°C, et qui en fonctionnement forment des ions à petits rayons ioniques, le rayon ionique maximum correspondant à celui de l'ion Na+ et qui est entouré d'une ampoule (9) extérieure cylindrique fermée des deux côtés qui définit un axe, l'enceinte (2) de décharge étant disposée à peu près axialement dans l'ampoule (9) extérieure et y étant maintenue par deux entrées (4, 5) de courant disposées dans l'ampoule (9) extérieure, les entrées (4, 5) de courant disposées dans l'ampoule (9) extérieure étant entourées sur une grande partie de leur longueur par une enveloppe (14) protégeant des UV, caractérisée en ce que la teneur spécifique en les métaux ayant tendance à diffuser est inférieure dans le volume de décharge à 6 µ mole/cm3.
  2. Lampe à décharge à halogénure métallique suivant la revendication 1, caractérisée en ce que le métal ayant tendance à diffuser est le sodium et/ou le lithium.
  3. Lampe à décharge à halogénure métallique suivant la revendication 1 ou 2, caractérisée en ce que la teneur spécifique en métal ayant tendance à diffuser est d'au moins 1 µ mole/cm3.
  4. Lampe à décharge à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enveloppe (14) est en l'un des matériaux que sont la céramique, le verre dur ou le verre de quartz.
  5. Lampe à décharge à halogénure métallique suivant la revendication 4, caractérisée en ce que l'enveloppe (14) est souple.
  6. Lampe à décharge à halogénure métallique suivant la revendication 1, caractérisée en ce que la quantité totale d'halogénures métalliques (en mg) correspond au maximum à trois fois le volume (en cm3) de l'enceinte de décharge.
  7. Lampe à décharge à halogénure métallique suivant la revendication 1, caractérisée en ce que la puissance de la lampe est au maximum de 250 W.
  8. Lampe à décharge à halogénure métallique suivant la revendication 1, caractérisée en ce que l'enveloppe est un revêtement constitué d'une suspension de céramiques, notamment de ZrO2 qui contient jusqu'à 15% en poids d'oxyde de bore.
  9. Utilisation d'une enveloppe (14), notamment d'un manchon en verre au quartz, en verre dur ou en matière céramique, pour les entrées (4, 5) de courant dans l'ampoule extérieure d'une lampe à décharge à halogénure métallique, dans laquelle une enceinte (2) de décharge pincée des deux côtés est disposée à peu près axialement dans une ampoule (9) extérieure cylindrique qui est fermée des deux côtés et qui définit un axe pour empêcher la photo-ionisation, lors de l'utilisation de petites quantités d'atmosphères métalliques des métaux que sont le sodium et/ou le lithium, caractérisée en ce que la quantité pure de ces métaux représente moins de 6 µ mole/cm3 rapportée au volume de décharge.
EP94919552A 1993-10-06 1994-06-30 Lampe a decharge d'halogenure metallique Expired - Lifetime EP0722616B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE4334074 1993-10-06
DE4334074A DE4334074A1 (de) 1993-10-06 1993-10-06 Metallhalogenidentladungslampe
PCT/DE1994/000753 WO1995010120A1 (fr) 1993-10-06 1994-06-30 Lampe a decharge d'halogenure metallique

Publications (2)

Publication Number Publication Date
EP0722616A1 EP0722616A1 (fr) 1996-07-24
EP0722616B1 true EP0722616B1 (fr) 1999-09-08

Family

ID=6499548

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94919552A Expired - Lifetime EP0722616B1 (fr) 1993-10-06 1994-06-30 Lampe a decharge d'halogenure metallique

Country Status (7)

Country Link
US (1) US5729091A (fr)
EP (1) EP0722616B1 (fr)
JP (1) JP3176631B2 (fr)
CN (1) CN1066853C (fr)
DE (2) DE4334074A1 (fr)
HU (1) HU216672B (fr)
WO (1) WO1995010120A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19731168A1 (de) * 1997-07-21 1999-01-28 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Beleuchtungssystem
US6147440A (en) * 1997-09-11 2000-11-14 Osram Sylvania Inc. Low wattage lamp having formed arc tube in aluminosilicate outer jacket
JP3657461B2 (ja) * 1999-06-15 2005-06-08 株式会社小糸製作所 放電バルブ
JP4050062B2 (ja) * 2001-04-02 2008-02-20 サムスン エレクトロニクス カンパニー リミテッド 光源装置、これを有するバックライトアセンブリ及び液晶表示装置
US6861808B2 (en) * 2002-03-27 2005-03-01 Matsushita Electric Industrial Co., Ltd. Metal vapor discharge lamp
DE10234758B4 (de) * 2002-07-30 2006-02-16 Sli Lichtsysteme Gmbh Metall-Halogendampflampe niedriger Leistung
SE530760C2 (sv) * 2007-05-24 2008-09-09 Auralight Int Ab Högtrycksnatriumlampa
CN102205136B (zh) * 2010-03-31 2014-02-05 海尔集团公司 宽频光波杀菌灯

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6703447A (fr) * 1967-03-03 1968-09-04
DE3619068C2 (de) * 1986-06-06 1996-08-22 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Kompakte Metallhalogenidentladungslampe
HU205485B (en) * 1986-10-20 1992-04-28 Tungsram Reszvenytarsasag Metal halogen discharge lamp containing alkali-halogenide additive
DE9002959U1 (fr) * 1990-03-15 1990-05-17 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
US5064395A (en) * 1990-10-01 1991-11-12 Gte Products Corporation Compact outer jacket for low wattage discharge lamp
CA2062889A1 (fr) * 1991-04-22 1992-10-23 John M. Washick Revetements en nitrure de silicium pour lampes a halogenures, destines a reduire les portes de sodium
DE9112690U1 (fr) * 1991-10-11 1991-12-05 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh, 8000 Muenchen, De
JPH0631029U (ja) * 1992-09-22 1994-04-22 住友電装株式会社 シールド電線の端末部分の保護構造

Also Published As

Publication number Publication date
JP3176631B2 (ja) 2001-06-18
JPH08511127A (ja) 1996-11-19
CN1066853C (zh) 2001-06-06
EP0722616A1 (fr) 1996-07-24
HUT73122A (en) 1996-06-28
US5729091A (en) 1998-03-17
CN1132569A (zh) 1996-10-02
WO1995010120A1 (fr) 1995-04-13
DE59408733D1 (en) 1999-10-14
HU216672B (hu) 1999-08-30
HU9503684D0 (en) 1996-02-28
DE4334074A1 (de) 1995-04-13

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