EP2116111A1 - Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type - Google Patents

Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type

Info

Publication number
EP2116111A1
EP2116111A1 EP08717396A EP08717396A EP2116111A1 EP 2116111 A1 EP2116111 A1 EP 2116111A1 EP 08717396 A EP08717396 A EP 08717396A EP 08717396 A EP08717396 A EP 08717396A EP 2116111 A1 EP2116111 A1 EP 2116111A1
Authority
EP
European Patent Office
Prior art keywords
pulse generator
pressure discharge
spiral
discharge lamp
voltage
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.)
Granted
Application number
EP08717396A
Other languages
German (de)
English (en)
Other versions
EP2116111B1 (fr
Inventor
Andreas Kloss
Bernhard Schalk
Steffen Walter
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
Osram GmbH
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 Osram GmbH filed Critical Osram GmbH
Publication of EP2116111A1 publication Critical patent/EP2116111A1/fr
Application granted granted Critical
Publication of EP2116111B1 publication Critical patent/EP2116111B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/02—Details
    • H05B41/04—Starting switches
    • H05B41/042—Starting switches using semiconductor devices

Definitions

  • the invention relates to a high-voltage pulse generator according to the preamble of claim 1.
  • Such generators can be used in particular for the ignition of high-pressure discharge lamps for general lighting or for photo-optical purposes or for motor vehicles.
  • the invention further relates to a high-pressure discharge lamp with such a generator.
  • the object of the present invention is to provide a spiral pulse generator which can be used as a high temperature resistant transformer.
  • a further object is to provide a high-pressure discharge lamp whose ignition behavior is significantly improved compared to previous lamps and in which no damage due to the high voltage is to be feared.
  • the second conductor only a few turns, while the first conductor has the usual number of turns, such as 20 to 100.
  • the spiral pulse generator acts as a high temperature resistant transformer.
  • This transformer works in a similar way to an integrated Saving Transformer in that the second conductor acts as a capacitor and thus acts as a charging capacitor for the transformer.
  • the generator can also be designed with only one conductor winding with three contacts as a real economy transformer.
  • LTCC component or HTCC component.
  • This material is a special ceramic that can be made temperature resistant to 600 0 C.
  • LTCC has already been used in connection with lamps, see US 2003/0001519 and US Pat. No. B 6,853,151. However, it has been used for quite different purposes in lamps that are practically barely exposed to temperature, with typical temperatures below 100 ° C.
  • the spiral pulse generator is a component that combines the characteristics of a capacitor with those of a waveguide to produce ignition pulses with a voltage of at least 1.5 kV.
  • Two ceramic "green films" with metallic conductive paste are used for the production printed and then added to a spiral wound and finally isostatically pressed into a molding.
  • the following co-sintering of metal paste and ceramic foil takes place in air in the temperature range between 800 and 900 ° C. This processing allows a range of application of the spiral pulse generator up to 700 ° C. temperature load.
  • the spiral pulse generator can be accommodated in the immediate vicinity of the discharge vessel in the outer bulb, but also in the base or in the immediate vicinity of the lamp.
  • spiral pulse generator can also be used for other applications, because it is not only high temperature stable, but also extremely compact.
  • the spiral pulse generator is designed as an LTCC component consisting of ceramic foils and metallic conductive paste.
  • the spiral should have at least 5 turns.
  • an ignition unit which furthermore comprises at least one charging resistor and a switch.
  • the switch can be a spark gap or a Diac in SiC technology.
  • a spiral pulse generator can be dimensioned such that the high-voltage pulse even enables hot re-ignition of the lamp.
  • a very compact design of the spiral pulse generator is possible, so that an installation in commercial outer bulb of high-pressure discharge lamps succeed.
  • the generated high voltage pulse represents a comparatively large energy available, which facilitates the transition to self-discharge after successful breakdown.
  • the large pulse width also facilitates the breakdown in the discharge volume.
  • any conventional glass can be used, ie in particular tempered glass, Vycor or quartz glass.
  • the choice of filling is subject to no particular restriction.
  • Fig. 1 shows the basic structure of a spiral pulse generator as already known
  • Fig. 2 shows the basic structure of a spiral pulse generator with ferritic cladding
  • FIG 3 shows the basic structure of a spiral pulse generator with shortened second conductor.
  • Fig. 5 shows the basic structure of a metal halide lamp with spiral pulse generator in the outer bulb.
  • Fig. 6 shows a metal halide lamp with spiral pulse generator in the outer bulb
  • Fig. 7 is a metal halide lamp with spiral pulse generator in the base.
  • Figure 1 shows the basic structure of a spiral pulse generator 1 in plan view. It consists of a ceramic cylinder 2, in which two different metallic conductors 3 and 4 are spirally wound as a film strip.
  • the cylinder 2 is hollow inside and has a given inner diameter ID.
  • the two inner contacts 6 and 7 of the two conductors 3 and 4 are as close to each other as possible and are connected to each other via a spark gap 5.
  • the spiral pulse generator is either wound from two ceramic foils coated with metal paste or made up of two metal foils and two ceramic foils.
  • An important parameter is the number n of turns, which should preferably be in the order of 5 to 100.
  • This winding assembly is then laminated and then sintered, creating an LTCC component.
  • the thus created spiral pulse generators with capacitor property are then connected with a spark gap and a charging resistor.
  • the spark gap can occur at the inner or the outer terminals or also within the winding of the nerators are located.
  • a spark gap can preferably be used, which is temperature-stable. It is also possible to use a semiconductor switching element, preferably in SiC technology. This is suitable for temperatures above 350 0 C.
  • a ceramic foil in particular a ceramic strip such as Heratape CT 707 or preferably CT 765 or a mixture of both, in each case used by Heraeus, is preferably used as the dielectric. It has a thickness of the green film of typically 50 to 150 microns.
  • Ag conductive paste such as "Cofirable Silver", also from Heraeus, is used as the conductor.
  • a concrete example is TC 7303 from Heraeus. Good results are also provided by the metal paste 6145 from DuPont. These parts are easy to laminate and then heat out ("binder burnout") and sinter together ("co-firing").
  • the inner diameter ID of the spiral pulse generator is 10 mm.
  • the width of the individual strips is also 10 mm.
  • the film thickness is 50 ⁇ m and also the thickness of the two conductors is 50 ⁇ m in each case.
  • FIG. 2 shows a ferrite 50 in the shape of an E core, whose center bar 51 passes through the inner cavity of the generator 1.
  • FIG. 3 shows a spiral pulse generator 10 according to the invention, in which the second metallic conductor 14 is significantly shorter than the first conductor 3.
  • the contacts of the spark gap 5 can be opposite each other o- as close as possible to each other.
  • FIG. 4 shows a spiral pulse generator 20 which has only a single metallic conductor 3 at all. He now has a separate commercially available charging capacitor 10, which is connected in series with the spark gap 5. This circuit acts as a spar transformer by connecting a center tap 40 of the metallic conductor via the charging capacitor 10 and the spark gap 5 to the inner end 41 of the metallic conductor.
  • FIG. 5 shows the basic structure of a metal halide lamp 25 with integrated spiral pulse generator 21, wherein no ignition electrode is attached to the outside of the discharge vessel 22, which may be made of quartz glass or ceramic.
  • the spiral pulse generator 21 is housed with the spark gap 23 and the charging resistor 24 in the outer bulb 36.
  • FIG. 6 shows a metal halide lamp 25 with a discharge vessel 22, which is supported by two supply lines 26, 27 in an outer bulb.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod which leads to the passage 28 remote from the base.
  • an ignition unit 31 is arranged, which contains the spiral pulse generator, the spark gap and the charging resistor, as indicated in Figure 5.
  • FIG. 7 shows a metal halide lamp 25 similar to FIG. 5 with a discharge vessel 22, which is held by two supply lines 26, 27 in an outer bulb 36.
  • the first lead 26 is a short-angled wire.
  • the second 27 is essentially a rod which leads to the base-remote bushing 28.
  • the ignition unit in the base 30 is arranged, both the spiral pulse generator 21, as well as the spark gap 23 and the charging resistor 24th
  • This technique can also be used for electrodeless lamps, where the spiral pulse generator can serve as a starting aid.
  • this compact high-voltage pulse generator is in the ignition of other devices.
  • the application is particularly advantageous in the case of so-called magic spheres, in the generation of X-ray pulses and in the generation of electron beam pulses.
  • a use in a car as a replacement for the usual ignition coils is possible.
  • the invention develops particular advantages in cooperation with high-pressure discharge lamps for car headlights, which are filled with xenon under high pressure of preferably at least 3 bar and metal halides. These are particularly difficult to ignite because of the high xenon pressure, the ignition voltage is more than 10 kV. At present an attempt is being made to accommodate the components of the ignition unit in the base. A spiral pulse generator with integrated charging resistor can be accommodated in the base of the vehicle lamp.
  • the invention has very particular advantages in conjunction with high-pressure discharge lamps which contain no mercury. Such lamps are particularly desirable for environmental reasons. It contains a suitable metal halide charge and, in particular, a noble gas such as xenon under high pressure. Because of the lack of mercury, the ignition voltage is particularly high. It is more than 20 kV. Currently trying to accommodate the components of the ignition unit in the base. A spiral pulse generator with built-in charging resistor can either be housed in the base of the mercury-free lamp or in an outer bulb of the lamp.

Landscapes

  • Discharge Lamps And Accessories Thereof (AREA)
  • Circuit Arrangements For Discharge Lamps (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)

Abstract

Selon la présente invention, pour allumer une lampe à décharge haute pression est utilisé un générateur d'impulsions de haute tension qui sert de transformateur.
EP08717396A 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type Not-in-force EP2116111B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007010898A DE102007010898A1 (de) 2007-03-06 2007-03-06 Hochspannungspulsgenerator und Hochdruckentladungslampe mit derartigem Generator
PCT/EP2008/052642 WO2008107447A1 (fr) 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type

Publications (2)

Publication Number Publication Date
EP2116111A1 true EP2116111A1 (fr) 2009-11-11
EP2116111B1 EP2116111B1 (fr) 2010-11-24

Family

ID=39491714

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08717396A Not-in-force EP2116111B1 (fr) 2007-03-06 2008-03-05 Générateur d'impulsions de haute tension et lampe à décharge haute pression pourvue d'un générateur de ce type

Country Status (8)

Country Link
US (1) US20100102725A1 (fr)
EP (1) EP2116111B1 (fr)
JP (1) JP5086374B2 (fr)
CN (1) CN101658073A (fr)
AT (1) ATE489835T1 (fr)
DE (2) DE102007010898A1 (fr)
TW (1) TW200845819A (fr)
WO (1) WO2008107447A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008036611A1 (de) * 2008-08-06 2010-02-11 Osram Gesellschaft mit beschränkter Haftung Hochspannungsimpulsgenerator und Hochdruckentladungslampe mit einem Hochspannungsimpulsgenerator

Family Cites Families (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1087933A (en) 1963-10-10 1967-10-18 Atomic Energy Authority Uk Improvements in or relating to electrical pulse generators
US3322976A (en) * 1965-03-31 1967-05-30 Tobe Deutschmann Lab Capacitative high voltage pulse generating apparatus
US4005336A (en) * 1975-01-03 1977-01-25 Gte Sylvania Incorporated High intensity discharge lamp starting circuit
US4325004A (en) * 1980-10-02 1982-04-13 Gte Laboratories Incorporated Method and apparatus for starting high intensity discharge lamps
US4353012A (en) * 1981-04-24 1982-10-05 Gte Laboratories Incorporated Pulse injection starting for high intensity discharge metal halide lamps
US4608521A (en) 1984-12-27 1986-08-26 Gte Laboratories Incorporated Dual spiral line generator method and apparatus for starting low wattage high intensity discharge lamps
US4721888A (en) * 1984-12-27 1988-01-26 Gte Laboratories Incorporated Arc discharge lamp with ultraviolet enhanced starting circuit
US4680509A (en) * 1985-12-23 1987-07-14 Gte Laboratories, Inc. Method and apparatus for starting high intensity discharge lamps
US4724362A (en) * 1985-12-23 1988-02-09 Gte Products Corporation High frequency lamp igniter using a spiral line pulse generator in combination with a series inductor-switch circuit
US5567995A (en) * 1994-10-20 1996-10-22 The United States Of America As Represented By The Secretary Of The Air Force Multi winding spiral generator
ES2170213T3 (es) * 1995-03-29 2002-08-01 Valeo Electronique Conjunto de transformador, especialmente para un dispositivo de alimentacion de lampara de descarga de proyector de vehiculo automovil.
US6054914A (en) * 1998-07-06 2000-04-25 Midcom, Inc. Multi-layer transformer having electrical connection in a magnetic core
DE60033299T2 (de) * 1999-12-14 2007-08-30 Koninklijke Philips Electronics N.V. Hochdruckentladungslampe
JP3436252B2 (ja) * 2000-06-30 2003-08-11 松下電器産業株式会社 高圧放電ランプ
US20030001519A1 (en) 2001-05-29 2003-01-02 Kirkpatrick Douglas A. Integrated high brightness electrodeless lamp
US6853151B2 (en) 2002-11-19 2005-02-08 Denovo Lighting, Llc LED retrofit lamp
US7151330B2 (en) * 2003-03-20 2006-12-19 Radiance Technologies, Inc. Apparatus and method for generating high voltages using a voltage inversion generator and multiple closed-path ferrites
US7164572B1 (en) * 2005-09-15 2007-01-16 Medtronic, Inc. Multi-path, mono-polar co-fired hermetic electrical feedthroughs and methods of fabrication therfor
DE102005061831A1 (de) 2005-12-23 2007-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit
DE102005061832A1 (de) * 2005-12-23 2007-06-28 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator
DE102006026750A1 (de) 2006-06-08 2007-12-13 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Hochdruckentladungslampe mit verbesserter Zündfähigkeit sowie Hochspannungspulsgenerator

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2008107447A1 *

Also Published As

Publication number Publication date
DE102007010898A1 (de) 2008-09-11
EP2116111B1 (fr) 2010-11-24
US20100102725A1 (en) 2010-04-29
CN101658073A (zh) 2010-02-24
JP2010520596A (ja) 2010-06-10
DE502008001885D1 (de) 2011-01-05
ATE489835T1 (de) 2010-12-15
TW200845819A (en) 2008-11-16
WO2008107447A1 (fr) 2008-09-12
JP5086374B2 (ja) 2012-11-28

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