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WO2011018118A1 - Lampe à décharge haute pression dotée d'une assistance à l'allumage - Google Patents

Lampe à décharge haute pression dotée d'une assistance à l'allumage Download PDF

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Publication number
WO2011018118A1
WO2011018118A1 PCT/EP2009/060551 EP2009060551W WO2011018118A1 WO 2011018118 A1 WO2011018118 A1 WO 2011018118A1 EP 2009060551 W EP2009060551 W EP 2009060551W WO 2011018118 A1 WO2011018118 A1 WO 2011018118A1
Authority
WO
WIPO (PCT)
Prior art keywords
capillary
discharge lamp
pressure discharge
bending part
lamp according
Prior art date
Application number
PCT/EP2009/060551
Other languages
German (de)
English (en)
Inventor
Thomas Brauner
Sascha Piltz
Original Assignee
Osram Gesellschaft mit beschränkter Haftung
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 Gesellschaft mit beschränkter Haftung filed Critical Osram Gesellschaft mit beschränkter Haftung
Priority to PCT/EP2009/060551 priority Critical patent/WO2011018118A1/fr
Priority to JP2012600034U priority patent/JP3177501U/ja
Priority to US13/389,450 priority patent/US9111744B2/en
Priority to PCT/EP2010/060768 priority patent/WO2011018327A1/fr
Priority to DE212010000116U priority patent/DE212010000116U1/de
Priority to CN201090001082.7U priority patent/CN203242601U/zh
Publication of WO2011018118A1 publication Critical patent/WO2011018118A1/fr

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
    • H01J61/547—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode outside the vessel
    • 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

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 for general lighting or for photo-optical purposes.
  • PRIOR ART WO 2008/044197 discloses a high-pressure discharge lamp with a ceramic discharge vessel, in which an ignition aid starts from a long frame wire.
  • the starting aid is a separate piece of wire which extends in the direction of the discharge vessel at the level of a capillary.
  • a disadvantage of such an arrangement is that the ignition must be installed consuming and costly.
  • the object of the present invention is to provide a high-pressure discharge lamp whose ignition is ensured by simple inexpensive means
  • a part of the frame is now bent directly so that a bending part extends in the direction of a capillary, namely the capillary, which has the opposite electrical polarity to said frame.
  • the bending part has two feed parts and a peak part which develops the main function as a starting aid.
  • the two feed parts are angled against the long power supply, the so-called.
  • Stirrup wire of the frame the peak portion is disposed in the vicinity of the capillary, and preferably in a region in which the shaft of the electrode sits in the capillary, but from the wall the capillary is spaced.
  • the radioactive gas is mixed with a radioactive gas such as Kr85.
  • the radioactivity causes an ionization of the filling gas, which reduces the breakdown voltage and thus ensures the ignitability.
  • the use of radioactivity is increasingly limited by law.
  • a so-called UV enhancer is installed in the outer bulb. This consists of a miniaturized discharge tube, which emits UV radiation when the ignition voltage is applied. This UV radiation likewise causes an ionization of the burner filling gas and thus ensures the ignitability, see EP-A 922296.
  • a wire is wound around the capillary with the opposite-pole electrode from the hanger wire. When the ignition voltage is applied, a dielectrically impeded discharge arises in the region of this electrode, which ionizes the burner fill gas and reduces the ignition voltage, see, for example, EP-A 967631.
  • the current arrangement takes up the principle of dielectrically impeded discharge, but simplifies it decisively.
  • the stirrup wire is designed so that it runs as close to the capillary with the opposite pole electrode or touches them. There arises, similar to the wire windings mentioned under c), a dielectric barrier discharge, which ionizes the filling gas in the burner and allows a breakdown. Characteristic of the approach is that in contrast to previous solutions no additional component is needed as a starting aid, but the hanger wire takes over the additional functionality as a starting aid by its bending shape.
  • the stirrup wire can rest against the capillary, overlap or loop around the capillary. However, preference is given to a geometry that is as simple as possible, which does not affect the production.
  • the peak portion of the stirrup wire preferably has a smallest distance to the opposite pole current-carrying electrode, wherein the location of the smallest distance should be as close as possible to the actual discharge vessel.
  • a guided on the capillary strap wire is manufacturing technology very easy to implement in one-capped lamps and indeed much easier than a wire wrapping the capillary.
  • the stirrup wire does not require extra space in outer bulbs. The risk that the ignition aid loses its functionality or position during the life due to a poor joint connection to the hanger wire, is practically not given, since it is not a separate component, but an integral part of the hanger wire.
  • FIG. 1 shows a high-pressure discharge lamp with starting aid, first exemplary embodiment
  • 2 shows a high-pressure discharge lamp with starting aid, second exemplary embodiment
  • 3 shows a high-pressure discharge lamp with starting aid, third exemplary embodiment
  • 4 shows a high-pressure discharge lamp with starting aid, fourth exemplary embodiment
  • 5 shows a high-pressure discharge lamp with starting aid, fifth exemplary embodiment
  • 6 shows a high-pressure discharge lamp with starting aid, sixth exemplary embodiment.
  • FIG. 1 shows the structure of a high-pressure discharge lamp 1 in a highly schematic manner. It has a discharge vessel 2 which is accommodated in an outer bulb 3.
  • the outer leads 4 of the discharge vessel, which contact electrodes inside, are connected to two frame wires 5 and 6.
  • a short frame wire 5 leads to a first foil 7 in a pinch 8 of the outer bulb.
  • a long frame wire 6, often called stirrup wire, leads to a second film 7 in the pinch 8.
  • the discharge vessel 2 has at its ends in each case a capillary 10, as known per se, and a filling of an ionizable gas, usually argon or Xenon, mercury and metal halides, also known per se.
  • Two electrodes are located in the interior of the discharge vessel, as also known per se, and not shown here. Hg is not essential.
  • the hanger wire 6 is guided substantially parallel to the axis A of the discharge vessel at this to the second capillary 10 remote from the pinch seal 8 where it is connected to the feed 4.
  • the hanger wire 6 is bent in the region of the first capillary 10 in the direction of the capillary in a plane, so that the resulting bending part 11 is shaped similar to a V.
  • the feed parts 12 are angled, in particular 30 to 60 °, angled against the hanger wire 6 and axis A. Typical is an angle of 45 °.
  • This embodiment is gentle on materials and simplest and inexpensive to produce. It is amazing that this simple arrangement is already sufficient to support the ignition sufficient. It is important, however, that the peak part in the area of the capillary is arranged as far in front as possible, if possible in the region of the first 20% of the length of the capillary.
  • Figure 2 shows an embodiment in which the bending part 11 is shaped in the manner of a U.
  • the two feed parts 12 are angled here approximately at 45 ° to 90 ° to the hanger wire 6.
  • the peak portion 13 is angled at 90 ° to 135 ° to the feed parts and runs parallel to the capillary 10 along. This ionizes a larger volume in the discharge vessel.
  • the peak portion 13 should protrude here at least in the range of the first 20% of the length of the capillary or fill it as well as possible.
  • FIG. 3 shows a third exemplary embodiment in which the basic arrangement is similar to that in FIG.
  • the bending part 11 is V-shaped.
  • the plane of the bending part is not chosen so that the shortest connection, as in Figure 1, in the direction of the capillary 10th is searched.
  • the plane of the bending part 11 is chosen so that it is tangentially past the capillary 10.
  • the peak portion 13 is in the projection of the capillary 10 in side view, as shown in FIG.
  • the advantage of this arrangement is that a region with inhomogeneous field strength can act in a relatively large volume of the capillary 10.
  • FIG. 4 shows a fourth exemplary embodiment, in which the bending part 11 does not lie in one plane. Rather, the bending part 11 is guided helically or in the manner of a helix around the capillary 10, the bending part 11 is similar to a semicircle, without a peak part 13 would be structurally excellent. Rather, the peak portion 13 here is functionally given by the point closest to the capillary 10.
  • a modification of this construction can connect elements of the embodiment of Figure 1 with elements of Figure 4, in that the bending part is bent in principle V-shaped, the two supply parts but not a plane, but the peak part around the capillary as shown in FIG is.
  • the hanger wire 6 may also be bent so that a first part 26, which is close to the squeeze, and a second part 36, which is squeezing away, are parallel to each other. Between both parts sits the bending part 11th
  • the minimum distance between bending part 11 and capillary 10 should preferably be at most 1 mm.
  • FIG. 5 shows a detail of a ceramic discharge vessel 30.
  • the starting aid representing characterized by the bending part 11, as far as possible in that region has the shortest distance to the capillary 10, in which the shaft 21 of the electrode sits in the capillary 10, but a relatively large distance to the wall 31 of the capillary is present, so that here is a relatively large ionizable volume is present.
  • this ignition aid should advantageously sit in the first 20% of the length L of the capillary, so that part of the inhomogeneous field strength protrudes as far as possible into the discharge volume 32.
  • the rear part of the shaft or the passage 34 or else is often wrapped with a spiral 35 in order to minimize the dead volume there.
  • FIG. 6 shows a further exemplary embodiment of a discharge vessel 40 with end 41, in which the capillary is represented by a separate plug 25. Again, it is important that the bending part 11 as far as possible, here at the level of the end 41 of the discharge vessel sitting.
  • Essential features of the invention in the form of a numbered list are:
  • High-pressure discharge lamp with ignition aid comprising a ceramic discharge vessel, which is accommodated in an outer bulb, wherein the discharge vessel has two ends with capillaries in which electrodes are fixed, wherein a frame with a hanger wire supports the discharge vessel in the outer bulb, characterized that the stirrup wire is bent so far to the capillary of the opposite pole electrode, that the bending part formed thereby acts as a starting aid.
  • High-pressure discharge lamp according to claim 1 character- ized in that the bending part has two feed parts and a peak part.
  • High-pressure discharge lamp according to claim 1 character- ized in that the bending part is bent V-shaped or U-shaped.
  • High-pressure discharge lamp according to claim 1 character- ized in that the bending part has a minimum distance from the capillary, which sits in the region of the first 20% of the length of the capillary.
  • High-pressure discharge lamp according to claim 1 character- ized in that the bending part lies in a plane.
  • High-pressure discharge lamp according to claim 1 character- ized in that the bending part surrounds the capillary loop-like.
  • Discharge vessel is.
  • High-pressure discharge lamp according to claim 1 character- ized in that the discharge vessel has a metal halide.

Landscapes

  • Vessels And Coating Films For Discharge Lamps (AREA)

Abstract

La présente invention concerne une lampe à décharge haute pression dotée d'une assistance à l'allumage, présentant un récipient de décharge céramique qui est mis en place dans une ampoule extérieure, le récipient de décharge présentant deux extrémités dotées de capillaires dans lesquels sont fixées des électrodes, et un bâti doté d'un fil recourbé servant à maintenir le récipient de décharge dans l'ampoule extérieure. Le fil recourbé est recourbé en direction des capillaires des électrodes de pôles opposés de telle sorte que la partie courbe ainsi formée sert d'assistance à l'allumage.
PCT/EP2009/060551 2009-08-14 2009-08-14 Lampe à décharge haute pression dotée d'une assistance à l'allumage WO2011018118A1 (fr)

Priority Applications (6)

Application Number Priority Date Filing Date Title
PCT/EP2009/060551 WO2011018118A1 (fr) 2009-08-14 2009-08-14 Lampe à décharge haute pression dotée d'une assistance à l'allumage
JP2012600034U JP3177501U (ja) 2009-08-14 2010-07-26 始動補助機構を備えた高圧放電ランプ
US13/389,450 US9111744B2 (en) 2009-08-14 2010-07-26 High-pressure discharge lamp with starting aid
PCT/EP2010/060768 WO2011018327A1 (fr) 2009-08-14 2010-07-26 Lampe à décharge haute pression avec aide à l'amorçage
DE212010000116U DE212010000116U1 (de) 2009-08-14 2010-07-26 Hochdruckentladungslampe mit Zündhilfe
CN201090001082.7U CN203242601U (zh) 2009-08-14 2010-07-26 具有点燃辅助装置的高压放电灯

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2009/060551 WO2011018118A1 (fr) 2009-08-14 2009-08-14 Lampe à décharge haute pression dotée d'une assistance à l'allumage

Publications (1)

Publication Number Publication Date
WO2011018118A1 true WO2011018118A1 (fr) 2011-02-17

Family

ID=41130382

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2009/060551 WO2011018118A1 (fr) 2009-08-14 2009-08-14 Lampe à décharge haute pression dotée d'une assistance à l'allumage

Country Status (1)

Country Link
WO (1) WO2011018118A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8659225B2 (en) 2011-10-18 2014-02-25 General Electric Company High intensity discharge lamp with crown and foil ignition aid
US8766518B2 (en) 2011-07-08 2014-07-01 General Electric Company High intensity discharge lamp with ignition aid

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443964A1 (fr) * 1990-02-23 1991-08-28 Welch Allyn, Inc. Lampe aux halogénures métalliques à wattage bas
US6002197A (en) * 1996-04-24 1999-12-14 Ushiodenki Kabushiki Kaisha Metal halide lamp light source device having conducting wire positioned to prevent it from casting a shadow
WO2000077826A1 (fr) * 1999-06-16 2000-12-21 Koninklijke Philips Electronics N.V. Lampe de decharge a haute pression
EP1398824A2 (fr) * 2002-09-13 2004-03-17 Matsushita Electric Industrial Co., Ltd. Lampe à halogénures métalliques avec dispositif pour la suppression de décharges indésirables
US20080303402A1 (en) * 2007-06-06 2008-12-11 Jianwu Li Ignition aid and fitting shroud for discharge lamp

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443964A1 (fr) * 1990-02-23 1991-08-28 Welch Allyn, Inc. Lampe aux halogénures métalliques à wattage bas
US6002197A (en) * 1996-04-24 1999-12-14 Ushiodenki Kabushiki Kaisha Metal halide lamp light source device having conducting wire positioned to prevent it from casting a shadow
WO2000077826A1 (fr) * 1999-06-16 2000-12-21 Koninklijke Philips Electronics N.V. Lampe de decharge a haute pression
EP1398824A2 (fr) * 2002-09-13 2004-03-17 Matsushita Electric Industrial Co., Ltd. Lampe à halogénures métalliques avec dispositif pour la suppression de décharges indésirables
US20080303402A1 (en) * 2007-06-06 2008-12-11 Jianwu Li Ignition aid and fitting shroud for discharge lamp

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8766518B2 (en) 2011-07-08 2014-07-01 General Electric Company High intensity discharge lamp with ignition aid
US8659225B2 (en) 2011-10-18 2014-02-25 General Electric Company High intensity discharge lamp with crown and foil ignition aid

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