EP0825636B1 - Lampe à décharge haute pression - Google Patents

Lampe à décharge haute pression Download PDF

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Publication number
EP0825636B1
EP0825636B1 EP97112617A EP97112617A EP0825636B1 EP 0825636 B1 EP0825636 B1 EP 0825636B1 EP 97112617 A EP97112617 A EP 97112617A EP 97112617 A EP97112617 A EP 97112617A EP 0825636 B1 EP0825636 B1 EP 0825636B1
Authority
EP
European Patent Office
Prior art keywords
discharge lamp
pressure discharge
lamp according
pinch
approximately
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
EP97112617A
Other languages
German (de)
English (en)
Other versions
EP0825636A3 (fr
EP0825636A2 (fr
Inventor
Hans-Werner Gölling
Thomas Dittrich
Dieter Franke
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
Priority claimed from DE1996133732 external-priority patent/DE19633732A1/de
Application filed by Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP0825636A2 publication Critical patent/EP0825636A2/fr
Publication of EP0825636A3 publication Critical patent/EP0825636A3/fr
Application granted granted Critical
Publication of EP0825636B1 publication Critical patent/EP0825636B1/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
    • H01J61/82—Lamps with high-pressure unconstricted discharge having a cold pressure > 400 Torr
    • 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
    • H01J61/366—Seals for leading-in conductors
    • H01J61/368—Pinched seals or analogous seals

Definitions

  • the invention relates to a high-pressure discharge lamp according to the Preamble of claim 1.
  • Such lamps are double-ended lamps with and without outer bulb.
  • the lamp is through on at least one side sealed a bruise.
  • It generally has a discharge vessel made of quartz glass.
  • they are metal halide lamps, which have a metal halide filling in addition to mercury, but also about high-pressure mercury discharge lamps or high-pressure xenon discharge lamps.
  • the lamps are preferably used for optical Systems, in particular photo-optical purposes, are used, for example in headlights, overhead projectors and effect lighting devices. you find especially used in lighting systems for stage, film and Watch TV.
  • Typical lamp powers are 400 to 2000 W.
  • Such a lamp is known from US Pat. No. 5,142,195
  • the broad and narrow sides of the bruises in cross section have typical double T-shape (also called I-shape). This corresponds to the total width w of the bruises (16 mm) about four times that Thickness d of the bruises (4 mm).
  • Thickness d of the bruises 4 mm
  • Such a width-thickness ratio w / d of about 4 is common.
  • These bruises whose length corresponds approximately to that of the discharge vessel primarily to bring the temperature of the end of the film near the base to a maximum Limit 350 ° C (see also US Pat. No. 5,138,227).
  • To be sufficient to ensure mechanical stability of these bruises according to US Pat. No. 5,142,195 at the starting point of the bruises on the discharge vessel Struts shaped. Through a special design of the Struts can further improve stability.
  • the object of the present invention is a high-pressure discharge lamp according to the preamble of claim 1 to provide a stable Crushed in the simplest possible way.
  • the high-pressure discharge lamp according to the invention consists of an elongate Discharge vessel with a central area that has a discharge volume encloses, and with at least one, preferably two, bruises, which are in diametrically opposite directions from the central area stretch away.
  • the bruise has two broad sides and two narrow sides on. In particular, the pinch is at least 18 mm long.
  • the length of the pinch is of the order of the longitudinal dimension of the Central area.
  • the dimensions of the pinch are chosen so that the Total width of the broadside less than or equal to 2.2 times the thickness this broadside is.
  • the stability of the lamp can be preferred by carefully choosing the thickness of the discharge vessel can be further improved.
  • the wall thickness of the discharge vessel is advantageously more than 1.5 mm. It is preferably included approx. 2 mm ⁇ 0.3 mm.
  • the broad sides of the bruises are known per se Equipped with ridges that widen the narrow sides. Thereby the stability is further improved. Particularly good results can be achieved if the total width of the narrow sides (including the marginal ridges) approximately (in particular to at least 20% exactly) corresponds to the total width of the broadsides.
  • the surface of the broad sides is advantageously cross-corrugated. This creates one larger surface, which due to its high thermal radiation Temperature load at the end of the film is also reduced and improved moreover, the stiffness of the bruise.
  • the length of the film is preferably about 60 to 70% of the length of the pinch.
  • the total width of the bruise reaches less than 50% of the maximum Width of the central area.
  • a hollow cylindrical tube extension is formed on the outer pinch end.
  • a base part can be held on this.
  • the outer diameter of the pipe socket the inner diameter of one on it fitted cylindrical base sleeve adapted.
  • the outside diameter of the pipe neck preferably corresponds approximately to the total width of the Broadside of the bruise. In this way, the two parts are ideally aligned coordinated and therefore easier to manufacture. Beyond that Center the lamp shaft (shown here as a pinch) and the base better axially than in the case of oval melting. In addition, the between Shaft and base remaining cavity well with suitable materials be shielded against air access.
  • Two electrodes extend from the bruises into the discharge volume. They are connected to external power supplies via metal foils, the metal foils being arranged in the bruises.
  • the electrodes are wrapped with rolls of molybdenum foil, as a result Jumps when squeezing and switching the lamp on and off prevented and the centering of the electrode is improved.
  • the roller acts as a flexible layer between the electrode and the surrounding quartz wall, which prevents the quartz glass from sticking to the electrode.
  • the molybdenum acts as a getter against filling impurities. All in all the life of the lamp is extended by the roller.
  • transition zone inserted to further increase the breaking strength. It is about 1 to 4 mm long.
  • the light-emitting fill in the discharge volume preferably contains Metal halides.
  • the discharge vessel is usually the lamp bulb itself.
  • the invention can also be used for lamps with a reflector or with an outer bulb.
  • FIG. 1 and 2 show a 575 W high-pressure discharge lamp 1 with a length of approximately 100 mm, which does not require an outer bulb. It is intended for use in a reflector, not shown here, in particular in an overhead projector, in which it is used transversely. It has a discharge vessel 2, which consists of a central area 3, to which two diametrically opposed bruises 4 are attached.
  • the isothermal discharge vessel 2 made of quartz glass, which is a very good approximation, has a wall thickness of approximately 1.8 mm.
  • the central area 3 is designed as a spherical body with an outer diameter of approximately 22 mm, so that a discharge volume of approximately 3 cm 3 results.
  • the rod-shaped tungsten electrodes 5, the tips of which are 7 mm apart, are each held axially in the pinch 4. They are each surrounded by a molybdenum roller 6, at least in the area of the pinch. The central area has a bulge 7 in the vicinity of the electrodes, which defines the coldest point.
  • the bruises 4, which are about 28 mm long are on by means of a short transition zone 11 the central area 3 connected.
  • the transition zone 11 is approximately 2 mm long. In it there is a smooth transition between the curved wall the central area and the straight contours of the bruises instead of.
  • the radius of curvature in the area of the transition is typically about 2 mm.
  • molybdenum foils 12 with a length of 20 mm and a width of 3.5 mm arranged approximately in the middle. They are vacuum tight embedded in the bruise.
  • At the distal ends of the Squeezes are formed on cylindrical tube lugs 13 with an outer diameter of 8 mm and an inner diameter of 5 mm.
  • the Pipe lugs are each about 10 mm long.
  • the electrodes 5 are via the molybdenum foils 12 with external power supplies 14 connected, which is centered on the pipe lugs 13 to the outside extend.
  • the power supplies 14 are with metallic base sleeves 15 (see Figure 2) in contact via brazing.
  • the base sleeves 15 are direct pushed onto the glass tube lugs 13 and with these by means of putty 21 connected.
  • the base sleeve 15 is lid-like on the outside (reference number 16) completed.
  • On the cover 16 there is a threaded rod in a manner known per se 17 in front who carries a knurled nut 18.
  • a sealing medium 19 is advantageously inserted, which further complicates the oxidation of the film. Can be beneficial the sealing medium 19 also fill the entire cavity.
  • Sealing medium can be, for example, ceramic paper or putty use.
  • a typical temperature at the end of the crush is 250 ° C.
  • the surfaces of the broad sides 8 of the bruises are cross corrugated 20 provided. They also point at the level of the electrodes and the elongated centering knobs on outer power supply lines (not shown).
  • the discharge volume contains a filling of an inert gas (argon) as Ignition gas and mercury as the main component as well as metal halides, consisting of the iodides and / or bromides of hafnium, dysprosium, Gadolinium, Cesium and Thallium. Overall, this filling results a color temperature of 6000 K with a color rendering index of greater 85.
  • argon inert gas
  • Ignition gas and mercury as the main component
  • metal halides consisting of the iodides and / or bromides of hafnium, dysprosium, Gadolinium, Cesium and Thallium.
  • Another embodiment is a 1200 W lamp with a metal halide filling, the structure of which is similar to that shown in FIGS. 1 and 2.
  • the lamp bulb has a total length of approx. 160 mm.
  • the dimensions of the Bruises and the other items are compared to the first Embodiment enlarged by about 50%.
  • the ratio w / d is too here about 2.0.
  • FIG. 3 An exemplary embodiment of a reflector lamp is shown in FIG. 3.
  • the reflector lamp 25 sits axially in a reflector 26, in the apex region of a reflector neck 30 is scheduled.
  • the central region 31 of the lamp is at its first end with a first approximately "square" in cross section Squeeze 27 closed, the additional at its outer end Has extension in the form of a hollow cylindrical tube extension 28.
  • This first pinch 27 together with the extension 28 sits in the reflector neck 30 and is there in a ceramic base part 32, since it is attached to the neck 30, supported by plaster 29.
  • the ratio w / d is about 1.8.
  • the first end of the reflector lamp instead, in a manner known per se, by melting be closed, which also has a hollow cylindrical tube extension.
  • the advantage of using a square squeeze over a meltdown, however, is that for the optical adjustment of the Lamp in the reflector neck remains significantly more space because of the cross-sectional area this bruise is smaller than with a meltdown. The adjustment is made considerably easier.
  • a power supply cable 33 is inserted laterally into the base part 32 and with the external power supply 34, which comes from the hollow cylindrical extension 28 stands out, connected.
  • the second end of the central region 31 of the lamp is in each of the two Embodiments of a reflector lamp by a (second) "Square" pinch 35 closed.
  • This bruising is beneficial kept so short (especially without a pipe neck) that the end of the pinch does not protrude beyond the reflector opening 36. That way a very compact and precisely adjusted reflector lamp can be provided.
  • the second power supply protruding from the second pinch 35 37 is by means of a curved cable 38 to a separate side Terminal 39 guided on the reflector.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Claims (14)

  1. Lampe à décharge à haute pression, constituée
    d'une enceinte (2) de décharge oblongue, comportant une région (3) centrale, qui entoure un volume de décharge, et deux régions d'extrémité, qui s'étendent dans des directions diamétralement opposées et dont au moins l'une est formée par un pincement (4) qui comporte chaque fois deux grands côtés (8) et deux petits côtés (9),
    d'une paire (5) d'électrodes, qui s'étend des pincements (4) vers le volume de décharge et qui est reliée, par l'intermédiaire de rubans (12) métalliques, à des entrées (14) de courant extérieures, les rubans métalliques étant enrobés dans les pincements,
    d'une atmosphère émettant de la lumière dans le volume de décharge,
    la longueur de chaque pincement correspondant à peu près à la dimension en longueur de la région centrale,
    caractérisée en ce que les dimensions du pincement (4) sont choisies de telle manière que la largeur w totale de chaque grand côté (8) est inférieure ou égale à 2,2 fois l'épaisseur d de ce grand côté.
  2. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que la longueur des rubans représente à peu près de 60 à 70 % de la longueur du pincement.
  3. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que la largeur totale du pincement représente moins de 50 % de la largeur maximum de la région centrale.
  4. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que les grands côtés (8) sont munis de renflements (10) sur le bord, qui élargissent les petits côtés (9).
  5. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que la surface des grands côtés est striée (20) transversalement.
  6. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce qu'il est issu de l'extrémité du pincement un prolongement (13) tubulaire cylindrique.
  7. Lampe à décharge à haute pression suivant la revendication 6, caractérisée en ce que le diamètre extérieur du prolongement (13) tubulaire est adapté au diamètre intérieur d'une douille (15) de culot qui y est posée.
  8. Lampe à décharge à haute pression suivant la revendication 6, caractérisée en ce que le diamètre extérieur du prolongement tubulaire correspond à peu près à la largeur totale du grand côté du pincement.
  9. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que l'épaisseur de paroi de l'enceinte de décharge (prolongement tubulaire inclus) est égale à environ 2 mm.
  10. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que les électrodes sont entourées chacune par des tonnelets (6) en molybdène.
  11. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce qu'une zone (11) de transition est insérée chaque fois entre la région (3) centrale et le pincement (4).
  12. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que l'enceinte de décharge est l'ampoule unique de la lampe.
  13. Lampe à décharge à haute pression suivant la revendication 1,
    caractérisée en ce que l'atmosphère contient des halogénures métalliques.
  14. Lampe à décharge à haute pression suivant la revendication 1, caractérisée en ce que la largeur totale des petits côtés (9), renflements sur le bord inclus, correspond à peu près, (notamment à au moins 20 % près), juste à la largeur totale des grands côtés (8).
EP97112617A 1996-08-21 1997-07-23 Lampe à décharge haute pression Expired - Lifetime EP0825636B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE1996133732 DE19633732A1 (de) 1996-08-21 1996-08-21 Hochdruckentladungslampe
DE19633732 1996-08-21
DE19712776A DE19712776A1 (de) 1996-08-21 1997-03-26 Hochdruckentladungslampe
DE19712776 1997-03-26

Publications (3)

Publication Number Publication Date
EP0825636A2 EP0825636A2 (fr) 1998-02-25
EP0825636A3 EP0825636A3 (fr) 1998-05-13
EP0825636B1 true EP0825636B1 (fr) 2001-04-25

Family

ID=26028607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97112617A Expired - Lifetime EP0825636B1 (fr) 1996-08-21 1997-07-23 Lampe à décharge haute pression

Country Status (6)

Country Link
US (1) US5847510A (fr)
EP (1) EP0825636B1 (fr)
JP (2) JPH1092384A (fr)
CN (1) CN1118859C (fr)
CA (1) CA2213189C (fr)
DE (2) DE19712776A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3218560B2 (ja) * 1997-02-07 2001-10-15 スタンレー電気株式会社 前照灯用メタルハライドランプ
EP0964432B1 (fr) * 1998-05-12 2005-08-03 Ushiodenki Kabushiki Kaisha Lampe à décharge à haute pression
JP2001345069A (ja) * 2000-05-31 2001-12-14 Matsushita Electric Ind Co Ltd 放電ランプおよびランプユニット、ならびにランプユニットの製造方法
JP3636654B2 (ja) * 2000-11-14 2005-04-06 株式会社小糸製作所 アークチューブ
US6501231B1 (en) 2001-07-09 2002-12-31 Amglo Kemlite Laboratories, Inc. Metal halide lightbulb strobe system
DE102004019185A1 (de) * 2004-04-16 2005-11-10 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe
US8674591B2 (en) * 2006-07-07 2014-03-18 Koninklijke Philips N.V. Gas discharge lamp with outer cavity
WO2008145173A1 (fr) * 2007-05-25 2008-12-04 Osram Gesellschaft mit beschränkter Haftung Lampe électrique dotée d'une ampoule et procédé de fabrication d'une lampe électrique
WO2009056163A1 (fr) * 2007-10-29 2009-05-07 Osram Gesellschaft mit beschränkter Haftung Lampe électrique comportant une ampoule et son procédé de fabrication
CN102456525A (zh) * 2010-10-18 2012-05-16 爱思普特殊光源(深圳)有限公司 一种有效降低短弧氙灯漏气失效概率的方法

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1317782A (fr) * 1961-03-16 1963-05-08
DE1194975B (de) * 1962-04-13 1965-06-16 Patra Patent Treuhand Hochdruckentladungslampe mit einem Quarzglaskolben
GB1102646A (en) * 1965-11-18 1968-02-07 Sylvania Electric Prod Electric lamp with ribbon seal
NL183613B (nl) * 1978-03-15 1988-07-01 Philips Nv Elektrische lamp.
NL7901630A (nl) * 1978-09-18 1980-03-20 Philips Nv Elektrische lamp.
GB2120006B (en) * 1982-05-07 1985-10-09 Gen Electric Plc Diversion of heat and light from ribbon seals in high-power electric lamps
US4749905A (en) * 1985-11-15 1988-06-07 Kabushiki Kaisha Toshiba High pressure discharge lamp
US4849669A (en) * 1986-11-28 1989-07-18 U.S. Philips Corporation Electric incandescent lamp for operation at line voltage
US5039909A (en) * 1989-04-24 1991-08-13 U.S. Philips Corporation Electric lamp and holder for such a lamp
DE3923589A1 (de) * 1989-07-17 1991-01-24 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe
DE59105899D1 (de) * 1990-04-12 1995-08-10 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Hochdruckentladungslampe und Verfahren zu ihrer Herstellung.
US5528106A (en) * 1993-08-18 1996-06-18 U.S. Philips Corporation Electric lamp with H-shaped pinched seal

Also Published As

Publication number Publication date
JPH1092384A (ja) 1998-04-10
CN1175079A (zh) 1998-03-04
DE59703424D1 (de) 2001-05-31
CA2213189A1 (fr) 1998-02-21
EP0825636A3 (fr) 1998-05-13
DE19712776A1 (de) 1998-10-01
CN1118859C (zh) 2003-08-20
EP0825636A2 (fr) 1998-02-25
CA2213189C (fr) 2004-10-19
US5847510A (en) 1998-12-08
JP2006245017A (ja) 2006-09-14

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