EP1712836A2 - Lampe à decharge haute pression à réflecteur - Google Patents

Lampe à decharge haute pression à réflecteur Download PDF

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Publication number
EP1712836A2
EP1712836A2 EP06007434A EP06007434A EP1712836A2 EP 1712836 A2 EP1712836 A2 EP 1712836A2 EP 06007434 A EP06007434 A EP 06007434A EP 06007434 A EP06007434 A EP 06007434A EP 1712836 A2 EP1712836 A2 EP 1712836A2
Authority
EP
European Patent Office
Prior art keywords
reflector
discharge lamp
lamp according
pressure discharge
space
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.)
Withdrawn
Application number
EP06007434A
Other languages
German (de)
English (en)
Other versions
EP1712836A3 (fr
Inventor
Carsten Dr. Setzer
Kai Dr. Wolter
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 EP1712836A2 publication Critical patent/EP1712836A2/fr
Publication of EP1712836A3 publication Critical patent/EP1712836A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V31/00—Gas-tight or water-tight arrangements
    • F21V31/005—Sealing arrangements therefor
    • 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

Definitions

  • the invention is based on a reflector high-pressure discharge lamp consisting of a gas-tight discharge vessel made of quartz glass with two diametrically attached to the shell of the discharge piston necks, in each of which an electrode made of tungsten is sealed gastight over a sealing film, with a filling of at least one noble gas, possibly Metal halides and possibly mercury and a reflector for collecting and focusing the light emitted from the discharge vessel light with holes for holding the discharge vessel and passing power supply lines and with a cover of a light transparent medium.
  • the reflector high-pressure discharge lamp has a discharge vessel with short electrode spacings, as used for data projectors and rear projection televisions or the like.
  • the discharge vessel heats up to around 1000 ° C outside the discharge space.
  • the temperature in the sealing sections of the discharge vessel is about 500 ° C lower.
  • the problem is the part of the electrical power supply, which is not melted in the glass and comes into contact with air.
  • These power supplies consist of molybdenum wire. From a temperature of 400 ° C but molybdenum corrodes. The cause of the corrosion lies in the oxidation of molybdenum with atmospheric oxygen. As a result, relatively many lamps fail during the lifetime.
  • the sealing portion of the piston necks relatively long (> 20 mm). This lowers the temperature around the molybdenum power supply wire but severely limits the lamp design.
  • the temperature of the molybdenum wire at the end of the sealing portion of the discharge vessel decreases with increasing distance from the discharge space. To lower the temperature so the sealing section and the molybdenum foil can be extended. With low lamp powers (100 - 120 W), this procedure is still sufficient. At higher lamp powers (200 - 250 W) this is no longer the case.
  • an active cooling is necessary, as can be achieved for example by an air flow, with the associated disadvantage of noise.
  • often outside slots are milled into the reflector to allow by means of forced cooling a direct air flow. In some cases, however, the reflector geometry does not allow longer discharge vessels. With a shortening of the discharge vessel, however, the temperature rises too high.
  • the object of the present invention is to provide a reflector high-pressure discharge lamp, in which an oxidation of the power supply lines is prevented.
  • the reflector high-pressure discharge lamp consisting of a gas-tight discharge vessel made of quartz glass with two diametrically attached to the shell of the discharge piston necks, in each case one Tungsten electrode is sealed gastight over a sealing film, with a filling of at least one noble gas, possibly metal halides and possibly mercury and a reflector for collecting and focusing the light emitted from the discharge vessel with holes for holding the discharge vessel and passing power supply lines and a cover a light-transparent medium achieved in that the space between the reflector and the discharge vessel is sealed gas-tight and filled with an inert gas or inert gas mixture.
  • the filling of the space between the reflector and the discharge vessel consists of a high-voltage dielectric gas, preferably of pure nitrogen. Apart from nitrogen, the filling of the space between the reflector and the discharge vessel can also consist of sulfur hexafluoride. Preferably, inert gas mixtures are also possible whose main constituents are nitrogen and / or sulfur hexafluoride and whose minor constituents are noble gases.
  • the filling pressure of the inert gas or inert gas mixture is preferably less than or equal to 1 ⁇ 10 3 hPa.
  • the reflector in these reflector high-pressure discharge lamps consists of glass, glass ceramic, ceramic or metal.
  • the intended as a cover for the reflector disc is gas-tightly connected to the reflector, which can be provided as a seal glass or an adhesive based on silicones, epoxy resins or bismaleimides.
  • the holes in the reflector for holding the discharge vessel and the implementation of the power supply lines with glass or an adhesive based on silicones, epoxy resins or bismaleimides are hermetically sealed.
  • a getter may be arranged in the space between the reflector and the discharge vessel, the possible oxidizing components in the
  • the temperature in the region of the power supply lines can be arbitrarily increased without oxidation occurring.
  • FIG. 1 shows a first exemplary embodiment of a reflector high-pressure discharge lamp.
  • the reflector high-pressure discharge lamp is composed of a high-pressure gas discharge lamp 1 made of quartz glass and a reflector 8 made of glass with a reflective coating 8a.
  • the reflector 8 is closed on the light exit side with a glass pane 9.
  • the disc is glued by means of vacuum-tight adhesive 11 made of silicone over the entire circumference with the reflector 8.
  • the area between Reflector 8 and disc 9 is gas-tight and filled with nitrogen of 1 x 10 3 hPa cold filling.
  • the high-pressure discharge lamp 1 is composed of the discharge piston 1a and the two shafts 1b, 1c mounted diametrically on the discharge piston 1a.
  • the discharge vessel is arranged in the optical axis of the reflector 8 and fixed with the one shaft 1c in a central bore 16 in the neck region of the reflector by means of a ceramic cement 10 based on silicate. This fills about 50% of the neck area. Behind the neck is sealed gas-tight with a vacuum-tight adhesive 13 made of silicone.
  • electrodes 3 made of tungsten. The electrodes 3 are melted over sealing foils 4a, 4b made of tungsten into the shafts 1b, 1c of the discharge vessel 1.
  • Power leads 6a, 6b made of molybdenum are welded to the outer ends of the sealing foils 4a, 4b, wherein the free end of one power supply 6a is connected to another nickel wire feed line 7b and the free end of the other power supply line 6b to the central bore 16 of the reflector 8 is directly connected to a socket 14.
  • the discharge space 2 of the discharge vessel 1 has a filling of mercury 5, metal halides and a noble gas mixture.
  • the further power supply line 7 to the discharge vessel leads through a lateral bore 8b, the gas-tight manner by means of a vacuum-tight adhesive 12 made of silicone, wherein the power supply line 7 is glued with.
  • Figure 2 shows a second embodiment of a reflector high-pressure discharge lamp and largely corresponds to the reflector high-pressure discharge lamp of Figure 1.
  • the reflector has 8 side holes 8b, 8c.
  • a wire coil 15 is wound in the sealed region of the discharge vessel.
  • This wire helix has the task to reduce the necessary ignition voltage of the lamp.
  • the wire helix 15 is guided through the second lateral reflector bore 8c which is sealed with silicone 12.
  • the reflector high-pressure discharge lamp of Figure 3 differs from the reflector high-pressure discharge lamp unit of Figure 2 in that the wire coil 15 is not through a lateral bore, but through the
  • Reflector neck 16 is led out.
  • the reflector high pressure discharge lamp of Figure 4 corresponds to the unit of Figure 1, but has no base and no lateral bore.
  • the power supply line for the power supply of the reflector neck remote end of the discharge lamp 1 is here also guided through the neck portion 16 of the reflector.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)
EP06007434A 2005-04-15 2006-04-07 Lampe à decharge haute pression à réflecteur Withdrawn EP1712836A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005017505A DE102005017505A1 (de) 2005-04-15 2005-04-15 Reflektor-Hochdruckentladungslampe

Publications (2)

Publication Number Publication Date
EP1712836A2 true EP1712836A2 (fr) 2006-10-18
EP1712836A3 EP1712836A3 (fr) 2006-11-29

Family

ID=36486007

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06007434A Withdrawn EP1712836A3 (fr) 2005-04-15 2006-04-07 Lampe à decharge haute pression à réflecteur

Country Status (7)

Country Link
US (1) US20060232178A1 (fr)
EP (1) EP1712836A3 (fr)
JP (1) JP2006302893A (fr)
CN (1) CN1873897A (fr)
CA (1) CA2542554A1 (fr)
DE (1) DE102005017505A1 (fr)
TW (1) TW200705508A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2017668A1 (fr) 2007-07-17 2009-01-21 Ushiodenki Kabushiki Kaisha Dispositif de source lumineuse avec système de réduction du bruit
WO2009049661A1 (fr) * 2007-10-09 2009-04-23 Osram Gesellschaft mit beschränkter Haftung Lampe à décharge haute pression
EP2716327A1 (fr) * 2012-10-03 2014-04-09 B-Intense GmbH Dispositif de rayonnement infrarouge

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5283380B2 (ja) * 2004-07-27 2013-09-04 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 一体型反射器ランプ
JP2009508301A (ja) * 2005-09-13 2009-02-26 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 反射器を含むランプ組立体及びランプ組立体を製造する方法
US8129890B2 (en) 2007-05-04 2012-03-06 Osram Ag High-pressure discharge lamp having a starting aid
JP5477757B2 (ja) * 2007-07-17 2014-04-23 ウシオ電機株式会社 光源装置
JP4973439B2 (ja) * 2007-07-17 2012-07-11 ウシオ電機株式会社 光源装置
US7628511B2 (en) * 2007-07-17 2009-12-08 Ushiodenki Kabushiki Kaisha Light source device
US8247972B2 (en) * 2008-05-15 2012-08-21 Osram Sylvania Inc. Ceramic discharge lamp with integral burner and reflector
DE102009030308B4 (de) 2009-06-24 2012-04-12 Osram Gesellschaft mit beschränkter Haftung Hochdruckentladungslampe
TWI413748B (zh) * 2011-06-15 2013-11-01 Lextar Electronics Corp Ｌｅｄ照明燈具
CL2013000743A1 (es) * 2013-03-19 2013-10-04 Lavin Rodrigo Prado Metodo para mejorar la transmision en un 5% o mas, de rayos ultravioletas en torno a una lampara de desinfeccion de cuarzo, que comprende la utilizacion de cualquier gas, diferente al aire ambiente, en el espacio interior del cuarzo que cubre la lampara uv.
CN104658876B (zh) * 2013-11-22 2018-09-11 海洋王（东莞）照明科技有限公司 灯具的高压气体放电光源
CN206338606U (zh) * 2016-12-07 2017-07-18 东莞市明凌电子科技有限公司 一种防水的led装饰灯泡

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889806C (de) * 1947-12-08 1953-09-14 Hermann E Dr Krefft Lichtquelle fuer Bestrahlung, Beleuchtung, Scheinwerfer und Projektion
US3341731A (en) * 1966-10-31 1967-09-12 Gen Electric Reflector arc lamp with arc tube support comprising arc tube inlead connectors fastened to the outer end of ferrules sealed in the outer envelope
US4622485A (en) * 1984-02-14 1986-11-11 Hitachi, Ltd. Discharge lamp with neon gas in outer tube
EP0550928A1 (fr) * 1991-12-23 1993-07-14 Koninklijke Philips Electronics N.V. Lampe à décharge à haute pression

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3798058A (en) * 1967-06-19 1974-03-19 V Chiola Refractory metal phosphate and phosphide coatings for refractory metal leads and process for producing metal phosphides
US6559600B1 (en) * 1998-11-17 2003-05-06 Matsushita Electric Industrial Co., Ltd. Discharge lamp, light source and projecting display unit
DE10231127B4 (de) * 2001-09-19 2008-09-25 Toshiba Lighting & Technology Corp. Hochdruck-Entladungslampe und Leuchtkörper

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE889806C (de) * 1947-12-08 1953-09-14 Hermann E Dr Krefft Lichtquelle fuer Bestrahlung, Beleuchtung, Scheinwerfer und Projektion
US3341731A (en) * 1966-10-31 1967-09-12 Gen Electric Reflector arc lamp with arc tube support comprising arc tube inlead connectors fastened to the outer end of ferrules sealed in the outer envelope
US4622485A (en) * 1984-02-14 1986-11-11 Hitachi, Ltd. Discharge lamp with neon gas in outer tube
EP0550928A1 (fr) * 1991-12-23 1993-07-14 Koninklijke Philips Electronics N.V. Lampe à décharge à haute pression

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2017668A1 (fr) 2007-07-17 2009-01-21 Ushiodenki Kabushiki Kaisha Dispositif de source lumineuse avec système de réduction du bruit
US7944133B2 (en) 2007-07-17 2011-05-17 Ushiodenki Kabushiki Kaisha Light source device
WO2009049661A1 (fr) * 2007-10-09 2009-04-23 Osram Gesellschaft mit beschränkter Haftung Lampe à décharge haute pression
EP2716327A1 (fr) * 2012-10-03 2014-04-09 B-Intense GmbH Dispositif de rayonnement infrarouge

Also Published As

Publication number Publication date
JP2006302893A (ja) 2006-11-02
CA2542554A1 (fr) 2006-10-15
CN1873897A (zh) 2006-12-06
US20060232178A1 (en) 2006-10-19
EP1712836A3 (fr) 2006-11-29
DE102005017505A1 (de) 2006-10-19
TW200705508A (en) 2007-02-01

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