EP0886881A1 - Gas discharge lamp, in particular for motor-vehicle headlights - Google Patents
Gas discharge lamp, in particular for motor-vehicle headlightsInfo
- Publication number
- EP0886881A1 EP0886881A1 EP97916328A EP97916328A EP0886881A1 EP 0886881 A1 EP0886881 A1 EP 0886881A1 EP 97916328 A EP97916328 A EP 97916328A EP 97916328 A EP97916328 A EP 97916328A EP 0886881 A1 EP0886881 A1 EP 0886881A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- ignition
- gas discharge
- discharge lamp
- 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.)
- Granted
Links
- 239000011521 glass Substances 0.000 claims abstract description 15
- 238000001465 metallisation Methods 0.000 claims description 54
- 238000002485 combustion reaction Methods 0.000 claims description 25
- 229910052751 metal Inorganic materials 0.000 claims description 20
- 239000002184 metal Substances 0.000 claims description 20
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005755 formation reaction Methods 0.000 claims description 4
- 230000008018 melting Effects 0.000 claims description 4
- 238000002844 melting Methods 0.000 claims description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910000510 noble metal Inorganic materials 0.000 claims description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 2
- 239000011241 protective layer Substances 0.000 claims description 2
- 238000010304 firing Methods 0.000 claims 2
- 241001156002 Anthonomus pomorum Species 0.000 claims 1
- 239000007789 gas Substances 0.000 description 18
- 238000013461 design Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000007373 indentation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000007740 vapor deposition Methods 0.000 description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000002800 charge carrier Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000004313 glare Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000005012 migration Effects 0.000 description 2
- 238000013508 migration Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 239000011888 foil Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- -1 platinum metals Chemical class 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003595 spectral effect Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
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
- H01J61/54—Igniting arrangements, e.g. promoting ionisation for starting
-
- 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
- H01J61/545—Igniting arrangements, e.g. promoting ionisation for starting using an auxiliary electrode inside the vessel
Definitions
- the invention relates to a gas discharge lamp, in particular for motor vehicle headlights, according to the preamble of the main claim.
- Gas discharge lamps or high-pressure gas discharge lamps are already used as standard in motor vehicle headlights, since they have a much better light output compared to conventional incandescent lamps and the spectral composition of the light is very similar to that of daylight.
- these gas discharge lamps require an ignition voltage between the electrodes of between 6 kV and approximately 25 kV. This voltage initiates the ionization in the gas filling. To burn, ie to maintain the arc between the electrodes, only low voltages of about 50 V are then required, since sufficient charge carriers are then already available.
- the gas discharge lamp according to the invention with the characterizing features of the main claim has the advantage that the ignition voltage can be significantly reduced while maintaining a reliable ignition behavior, only relatively minor structural changes to the lamp or its electrodes being required. In view of the resulting reduced requirements on the components, this can make a significant contribution to reducing costs in the electronic ballast and also in the gas discharge lamp itself, since there, for example, significantly lower requirements are placed on the high-voltage resistance of the lamp base and the components arranged therein are put. A particularly significant cost reduction of the gas discharge lamp occurs when the ballast is integrated in the lamp base.
- a particularly effective reduction in the ignition voltage can be achieved by at least one ignition electrode, which can be arranged separately from the main electrodes or molded onto them.
- this ignition electrode can be designed as a separate third electrode with its own gas-tight leadthrough through the burner vessel, the shorter ignition path being formed toward one of the main electrodes.
- the ignition electrode can be arranged as a separate third electrode on the outside of the burner vessel and in turn forms the ignition path towards one of the main electrodes.
- this ignition electrode can also be retrofitted to conventional gas discharge lamps, in particular to one of tube-like extensions which lead through the electrodes for the main electrodes of the lamp included.
- the ignition electrode expediently encompasses one of the two main electrodes in a ring-shaped or partially ring-shaped manner. If the tubular extension of the burner vessel has a constriction, the ignition electrode is advantageously arranged on this constriction or extends into it, since a particularly short ignition distance and a correspondingly significant reduction in the ignition voltage can then be achieved.
- the ignition electrode can either be designed as a true third electrode or a galvanic connection with one of the main electrodes, which enables the ignition part of the ballast to be operated completely separately from the other electronics.
- the at least one ignition electrode is arranged in the interior of the burner vessel, where it is better protected against external influences and where the connection to one of the main electrodes can be implemented easily and inexpensively.
- This embodiment can be realized in an advantageous manner in that the ignition electrode is connected to the one main electrode and extends to a point in the vicinity of the other main electrode, which in the operating state lies below this other main electrode.
- the ignition electrode is expediently designed as a rod-like or wire-like side arm of the one main electrode and can therefore be manufactured together with it as a one-piece component, the free end of the ignition electrode opening in particular on the wall of the burner vessel, or else the ignition electrode is as Metallization formed on the inside of the burner vessel and extends for connection to the one main electrode up to its electrode leadthrough, so that an electrical connection is automatically established.
- metallization or metal vapor deposition is comparatively inexpensive to apply in the normal production process of the lamp.
- the metallization at least partially encompasses the main electrode and preferably extends essentially to the free end region of this main electrode, so that a sliding spark gap can form from there.
- a clearer reduction in the ignition voltage can be achieved by Shaped or 1 i chtref1 ector-like metallization can be achieved, which extends at least along the area of the focal distance to the area of the other main electrode.
- the primary reflector-like metallization preferably extends essentially over the lower half of the combustion chamber of the burner vessel in the operating position and has the additional advantage of a vehicle headlight Xür__das Function "of ⁇ ubenTisonstlTn" necessary Blen 'de mitschreib Weight to the prescribed set Hei 1 -dark limit and protect oncoming traffic before a glare.
- Xür__das Function "of ⁇ ubenTisonstlTn" necessary Blen 'de mitschreib
- each of the two main electrodes is connected to an ignition electrode, between which a spark or glow spark gap is formed as an ignition gap.
- the ignition electrodes are designed as lateral arms of the main electrodes and extend in particular to form a sliding spark gap up to the inner glass wall of the burner vessel.
- the ignition electrodes are designed as rod-like or wire-like arms or as tapered lateral formations on the main electrodes, a particularly high electrical field being produced at the tapered ends, so that the ignition voltage can thereby be significantly reduced.
- the ignition electrodes preferably extend obliquely to one another up to the ignition plug and are arranged below the main electrodes during operation. As a result, very short ignition distances can be achieved with a correspondingly significantly reduced ignition voltage.
- the Arcs arising after the ignition sparks then migrate automatically through the thermal conditions in the combustion chamber to the location between the main electrodes.
- the two ignition electrodes are in the form of metallizations, each of which extends for connection to the main electrodes up to their electrode bushings.
- metallizations each of which extends for connection to the main electrodes up to their electrode bushings.
- corresponding designs are possible, as in the case of a single electrode formed by a metallization, where the advantages already described also occur.
- sliding spark gaps can be formed as ignition gaps along the inner wall of the burner vessel.
- Tungsten metallization is particularly suitable as the metallization.
- a further advantageous embodiment of the invention consists in that the main electrodes have a cross-sectional profile with a pointed corner, in particular a triangular profile 1. Since the electrodes extend to the glass inner wall on the electrode leadthrough, glass appears at the separation point. Electrode has a very large dielectric jump, so that high field strengths occur. This effect is supported by the pointed corner, so that a sliding discharge is formed on the glass wall even at relatively low ignition voltages, and here too - like in the other exemplary embodiments - the arc migrates upwards due to thermal effects and finally burns at the broadened cross-sectional area. This can be supported by the fact that the mutually facing surfaces of the Main electrodes are inclined in opposite directions to their longitudinal axes, the regions of the main electrodes which are closer to one another being wider and the regions which are more distant from one another are tapering.
- FIG. 1 shows a cross-sectional illustration of a first exemplary embodiment with an outer ring-shaped ignition electrode
- FIG. 2 shows a cross-sectional illustration of a second exemplary embodiment with a wire ring-shaped outer ignition electrode
- FIG. 3 shows a cross-sectional illustration of a third exemplary embodiment with an ignition electrode which is carried out separately through the burner vessel
- FIG. 4 shows a cross-sectional illustration of a fourth exemplary embodiment with an inner ignition electrode formed by a metallization
- FIG. 5 shows a cross-sectional representation of a fifth exemplary embodiment with a differently designed inner electrode formed by a metallization
- FIG. 6 is a cross-sectional view of a sixth exemplary embodiment with two inner ignition electrodes formed by metallization
- FIG. 7 shows a cross-sectional illustration of a seventh exemplary embodiment with two ignition electrodes designed as lateral extensions of the main electrodes
- FIG. 8 shows a cross-sectional illustration of an eighth exemplary embodiment with one as a side Extension of a main electrode formed ignition electrode
- FIG. 9 shows a cross-sectional illustration of a ninth exemplary embodiment with an outer igniter that engages in a constricted area of the burner vessel
- FIG. 10 shows a cross-sectional illustration of a tenth exemplary embodiment with two ignition electrodes designed as tapered lateral extensions of the main electrodes
- FIG. 12 shows a cross-sectional illustration of an eleventh exemplary embodiment with two main electrodes having a wedge profile
- FIG. 15 is a cross-sectional view of a thirteenth embodiment with an outer ignition electrode formed by a metallization, which also serves as a light reflector, and
- FIG. 16 shows a cross-sectional illustration of a fourteenth exemplary embodiment with an inner ignition electrode formed by a metallization, which also serves as a light reflector.
- the gas discharge lamp or high-pressure gas discharge lamp shown in FIG. 1 as the first exemplary embodiment essentially consists of a burner vessel 10 which is made of glass or another transparent, temperature- resistant material and has a central combustion chamber 12 with a flattened spherical shape or ellipsoidal shape, which has two tubular extensions 13, 14 on opposite sides.
- the outer end regions of these tubular extensions 13, 14 are designed as gas-tight electrode bushings 15, 16 for two rod-shaped main electrodes 17, 18, which extend slightly into the combustion chamber 12 from both sides.
- the arc 19 is formed during operation between these two main electrodes 17, 18.
- Outer electrical connecting wires 20, 21 are connected to the two main electrodes 17, 18 via connecting elements 22, which can be formed, for example, as molybdenum foils.
- the electrical connecting wires 20, 21 still run over a certain distance in tubular extensions 23, 24 of the extensions 13, 14, the electrode bushings 15, 16 between the extensions 13, 24 and the tubular extensions 23, 24, the connecting elements 22 and the hold the respective connection ends of the main electrodes 17, 18 or connection wires 20, 21.
- the main electrodes 17, 18 connected to the electrical connecting wires 20, 21 are inserted into the lateral connecting tubes of the combustion chamber 12, these connecting tubes being fused in the connecting area such that the connecting areas are melted and the extensions 13, 14 on the one hand and the tubular extensions 23, 24, on the other hand, are formed on both sides of the electrode bushings 15, 16.
- the electrical connection wires 20, 21, the connecting elements 22 and the tubular extensions 24, 24 are not shown, although it would of course also be possible in principle to implement such a simpler version.
- the representation of an L on the pen base s is dispensed with, for example one of the extensions 13, 14 could be embedded in such a lamp base, the second main electrode pointing away from this lamp base being returned to the lamp base via an external line.
- Other known designs of burner vessels are of course also possible for 1 s.
- this ignition electrode 25 concentrically surrounds the main electrode 17.
- a band-shaped metallization can also take place, a partial ring form also being able to take the place of the ring form.
- the ignition electrode 25 is electrically connected to the right main electrode 18 outside the burner vessel 10, while the main electrode 17, which runs concentrically in the ignition electrode 25, is connected to another voltage termination of a ballast device (not shown) for generating a combustion and ignition voltage. Since the distance between the ignition electrode 25 and the main electrode 17 is significantly smaller than the distance between the two main electrodes 17, 18, a significantly lower ignition voltage is sufficient for the ignition. For example, the ignition voltage can be reduced from 18 kV to 4 kV. After the occurrence of an ignition spark or ignition arc, this migrates due to the thermal conditions in the combustion chamber to the combustion path between the main electrodes, which creates the arc 19, which has an electrical arc curvature upwards, since the hot gas in the arc due to its lower density moves upwards against gravity.
- the ignition electrode 25 is a true third electrode without a galvanic connection to one of the two main electrodes 17, 18. Then the ignition voltage can be formed in a separate ignition part of the circuit separately from the rest of the electronics, so that only this ignition part needs to be resistant to high voltages, but not the majority of the other components that are required for the low-voltage combustion mode to generate the internal voltage.
- the second exemplary embodiment shown in FIG. 2 largely corresponds to the first exemplary embodiment, an ignition electrode 26 designed as a wire ring replacing the band-shaped ignition electrode 25, this wire ring being arranged at the connection point between the left extension 13 and the combustion chamber 12.
- a rod-shaped or wire-shaped ignition electrode 27 is passed through the wall of the combustion chamber 12 via a gas-tight electrode passage 28, the free end of this ignition electrode 27 ending in the vicinity of the left main electrode 17, so that a relatively short ignition distance can be formed. Otherwise the previous explanations apply.
- an ignition electrode 29 in the form of a metallization or metal vapor deposition is arranged on the inner surface of the burner vessel 10.
- This metallization extends over the inner surface of the right extension 14 and still projects somewhat as an all-round metal 1 i si réelle into the combustion chamber 12, essentially to the end region of the Haupt ⁇ electrode 18.
- All-round metal 1 i si réelle 30 extends from a narrow metallization 31 in the Longitudinal direction along the combustion chamber 12 and extends essentially to the attachment point of the left extension 13, that is to say in the vicinity of the left main electrode 17.
- an ignition arc 32 is therefore first formed between the end of the metallization web 31 and the left main electrode 17, which then expands to form an arc 19 between the two main electrodes 17, 18 for the thermal reasons mentioned.
- FIG. 16 A modification of the embodiment shown in FIG. 4 is shown in FIG. 16.
- an ignition electrode 60 takes the place of the ignition electrode 29, likewise in the form of an internal metal coating or metal vapor deposition, in which, based on an all-round metal coating 61, essentially the all-round metal 1 corresponds to 30, instead of a narrow metallization bar 31, a wide, reflector-like metallization 62 now extends to the left main electrode 17 and opens there at a metallization ring 63 encompassing this left main electrode 17.
- the reflector-like metallization 62 extends over the lower half of the combustion chamber 12 in the operating position shown, ie up to the height of the main electrodes 17, 18.
- narrower designs are also conceivable.
- the light emitted downwards cannot be used and must be shielded by an aperture.
- the prescribed Hei 1 dark limit can be set in order to protect oncoming traffic from glare.
- such an additional screen can be omitted and its function is taken over by the metallization 62.
- the metal 1 is chosen appropriately, the metallization has reflective layers Properties, so the majority of the otherwise lost light can be used and used to illuminate the street.
- an ignition arc 32 is first formed between the left edge of the metallization ring 63 and the left main electrode 17.
- an ignition electrode 64 in the form of an outer metal 1 i si réelle or outer metal 1 vaporization is shown.
- an all-round metallization 65 corresponds to the all-round metallization 61 of FIG. 16
- a reflector-like metallization 66 corresponds to the reflector-like metallization 62
- a metallization ring 67 corresponds to the metallization ring 63.
- it can be used as an outer metallization All-round metallization 65 does not reach the main electrode 18. It therefore continues along the electrode feed-through 16 and the extension 24 and is contacted there via a contact wire 68 and connected via a line 69 on the one hand to ground and on the other hand to the electrical connecting wire 21.
- the fifth exemplary embodiment shown in FIG. 5 largely corresponds to the fourth exemplary embodiment, only the metallization web 31 being omitted and an ignition electrode 33 being formed only by an all-round metallization which corresponds to the all-round metallization 30.
- the first discharge is formed as a sliding discharge 34 on the glass wall and as a flashover between the glass wall at the connection point combustion chamber 12 / extension 13 and the left main electrode 17.
- the sixth exemplary embodiment shown in FIG. 6 largely corresponds to the fifth exemplary embodiment, ignition electrodes 35, 36 designed as all-round metallization being provided on both main electrodes 17, 18.
- a sliding discharge along the glass wall between the ignition electrodes 35, 36 is formed in a corresponding manner.
- metallization webs can also be provided, which extend from one or both ignition electrodes 35, 36 to the other ignition electrode.
- rod-like or wire-like ignition electrodes 37, 38 extend obliquely downward from the main electrodes 17, 18 towards the glass wall and open there at a small distance from one another which extends the ignition path bi 1 det.
- These ignition electrodes 37, 38 extending laterally from the main electrodes 17, 18 can either be integrally formed or welded on.
- the ignition can take place with a very low ignition voltage, since the breakdown voltage in gases is approximately proportional to the electrode gap.
- the arrangement and design of the electrode extensions in relation to the vessel wall ensures that the arc that arises following the ignition sparks or ignition arcs also migrates here to the location between the main electrodes 17, 18 due to the thermal conditions in the combustion chamber, where it also passes without the Ignition electrodes 37, 38 would burn.
- An arc burning between the ignition electrodes 37, 38 is cooled to a greater extent by the proximity of the vessel wall than an arc which has a larger wall distance. The arc thus moves to the location of the combustion chamber, where it finds the greatest possible distance from the vessel wall and thus experiences the least possible cooling.
- only the left main electrode 17 has an ignition electrode 39 which extends laterally from this main electrode 17 and extends obliquely downward into the area below the free end of the other main electrode 18 up to the glass wall extends.
- an ignition spark is formed between the free end of the ignition electrode 39 and the right main electrode 18 as a result of the contact with the glass wall, it can be designed partly as a sliding spark and partly as a flashover spark, this ignition spark or ignition arc then in turn migrating upward and becoming the arc 19 between the main electrodes 17, 18, as shown in FIG. 8 schematic see figure 11 is.
- an indentation 40 of the glass wall is provided between the combustion chamber 12 and the lateral extensions 13, 14.
- An ignition electrode 41 designed as a metal strip extends along the left extension 13 into this indentation 40, as a result of which a particularly small distance from the left main electrode 17 and a correspondingly low ignition voltage are achieved.
- ignition electrode 41 instead of the ignition electrode 41, other outer electrode shapes, e.g. According to the exemplary embodiments shown in FIGS. 1 and 2, or metallizations occur, these electrodes either extending into the indentation 40 or being arranged in an annular manner therein.
- a simplified burner vessel 42 without lateral extensions 13, 14 which in turn contains a flattened or el 1 i psoid-like combustion chamber 43.
- Two main electrodes 44, 45 extend into this combustion chamber from two opposite sides and, according to FIG. 11, have a round cross section, that is to say they are rod-shaped.
- the electrode leadthroughs through the walls of the burner vessel 42 must, of course, again be gas-tight.
- the main electrodes 44, 45 each point downwards during operation extending jagged, tapered extensions, which form two ignition electrodes 46, 47. The tips of these ignition electrodes 46, 47 open on the inner wall of the vessel.
- the eleventh exemplary embodiment shown in FIGS. 12 and 13 largely corresponds to the tenth exemplary embodiment shown in FIGS. 10 and 11.
- Separate ignition electrodes 46, 47 are dispensed with, for this purpose correspondingly arranged main electrodes 48, 49 with a triangular or wedge-shaped cross-sectional profile are provided, as shown in FIG. 13.
- the main electrodes 48, 49 therefore have a downward-pointing pointed edge 50, at which in turn a high field strength is formed at the transition point between the metal of the main electrodes 48, 49 and the material of the vessel wall, so that a sliding discharge 34 is again formed, which that corresponds essentially to the tenth embodiment.
- Tungsten and platinum metals are particularly suitable as materials for interior metallizations. All non-oxidizable metals with a melting point above approx. 1000 C can be used for external metal insulations. Are metallizations applied on the outside covered with a temperature-resistant and oxygen-impermeable protective layer, e.g. B. SiOo or a ceramic layer, so less noble metals with melting temperatures above 1100 C can be used, such as Chromium, nickel, molybdenum.
- a temperature-resistant and oxygen-impermeable protective layer e.g. B. SiOo or a ceramic layer, so less noble metals with melting temperatures above 1100 C can be used, such as Chromium, nickel, molybdenum.
Landscapes
- Discharge Lamp (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19610387 | 1996-03-16 | ||
DE19610387A DE19610387A1 (en) | 1996-03-16 | 1996-03-16 | Gas discharge lamp, in particular for motor vehicle headlights |
PCT/DE1997/000423 WO1997035335A1 (en) | 1996-03-16 | 1997-03-06 | Gas discharge lamp, in particular for motor-vehicle headlights |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0886881A1 true EP0886881A1 (en) | 1998-12-30 |
EP0886881B1 EP0886881B1 (en) | 2000-06-14 |
Family
ID=7788497
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97916328A Expired - Lifetime EP0886881B1 (en) | 1996-03-16 | 1997-03-06 | Gas discharge lamp, in particular for motor-vehicle headlights |
Country Status (5)
Country | Link |
---|---|
US (1) | US6445129B1 (en) |
EP (1) | EP0886881B1 (en) |
JP (1) | JP2000506672A (en) |
DE (2) | DE19610387A1 (en) |
WO (1) | WO1997035335A1 (en) |
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WO2001073817A1 (en) * | 2000-03-28 | 2001-10-04 | Robert Bosch Gmbh | Gas discharge lamp with ignition assisting electrodes, especially for automobile headlights |
DE10062974A1 (en) * | 2000-12-16 | 2002-06-20 | Philips Corp Intellectual Pty | High pressure gas discharge lamp and process for its manufacture |
JP4251474B2 (en) * | 2002-07-23 | 2009-04-08 | ウシオ電機株式会社 | Short arc discharge lamp and light source device |
WO2006021910A2 (en) | 2004-08-26 | 2006-03-02 | Philips Intellectual Property & Standards Gmbh | Lamp with reflective coating |
EP1632985B1 (en) * | 2004-09-07 | 2014-06-25 | OSRAM GmbH | High-pressure discharge lampe |
US7187131B2 (en) * | 2004-12-14 | 2007-03-06 | Osram Sylvania Inc. | Discharge lamp with internal starting electrode |
US20080205064A1 (en) * | 2005-01-12 | 2008-08-28 | Koninklijke Philips Electronics, N.V. | Lamp Assembly Comprising a Uv-Enhancer |
DE102005003129A1 (en) * | 2005-01-21 | 2006-07-27 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp |
CA2604456A1 (en) * | 2005-04-14 | 2006-10-19 | Patent-Treuhand-Gesellschaft Fuer Elektrische Gluehlampen Mbh | Starter auxiliary electrode starting device with an arc gap |
JP2007042369A (en) * | 2005-08-02 | 2007-02-15 | Harison Toshiba Lighting Corp | Metal-halide lamp and lighting device |
DE102006007218A1 (en) * | 2006-02-15 | 2007-08-16 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | High pressure discharge lamp |
JP5009984B2 (en) * | 2006-07-07 | 2012-08-29 | 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 | Gas discharge lamp |
DE102006033871A1 (en) * | 2006-07-21 | 2008-01-24 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Discharge lamp with Zündhilfselement |
US8102121B2 (en) * | 2007-02-26 | 2012-01-24 | Osram Sylvania Inc. | Single-ended ceramic discharge lamp |
WO2008129487A2 (en) * | 2007-04-24 | 2008-10-30 | Koninklijke Philips Electronics N.V. | High pressure discharge lamp and vehicle headlight |
US7663318B2 (en) * | 2007-09-18 | 2010-02-16 | Osram Sylvania Inc. | HID lamp with rapid relight aid |
US8063564B2 (en) * | 2008-06-26 | 2011-11-22 | Osram Sylvania Inc. | Starting aid for HID lamp |
US7982400B2 (en) * | 2008-06-26 | 2011-07-19 | Marijan Kostrun | Starting aid for HID lamp |
WO2011048517A1 (en) * | 2009-10-19 | 2011-04-28 | Koninklijke Philips Electronics N.V. | High intensity discharge lamp |
FR2951808B1 (en) * | 2009-10-22 | 2011-11-18 | Gdf Suez | RADIANT BURNER WITH INCREASED YIELD, AND METHOD FOR IMPROVING THE YIELD OF A RADIANT BURNER |
DE102010029068A1 (en) * | 2010-05-18 | 2011-11-24 | Osram Gesellschaft mit beschränkter Haftung | Method for producing a high voltage switching spark gap |
DE102011003141A1 (en) * | 2011-01-26 | 2012-07-26 | Osram Ag | High pressure discharge lamp |
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DE2420811A1 (en) * | 1974-04-30 | 1975-11-13 | Klaus W Reiser & Co | Metal vapour lamp for use in projectors - has two electrodes at opposite ends and auxiliary from one terminal on outside of tube |
US3993922A (en) * | 1976-01-05 | 1976-11-23 | Gte Sylvania Incorporated | Arc discharge lamp with integral trigger electrode |
US4053809A (en) * | 1976-06-18 | 1977-10-11 | General Electric Company | Short-arc discharge lamp with starting device |
US4138621A (en) * | 1977-06-27 | 1979-02-06 | General Electric Company | Short-arc discharge lamp with starting device |
US4437039A (en) * | 1978-10-03 | 1984-03-13 | North American Philips Electric Corp. | Starting arrangement for high-intensity-discharge sodium lamp |
GB2060244B (en) * | 1979-10-09 | 1983-09-14 | Matsushita Electronics Corp | High pressure sodium vapour lamp |
US4360756A (en) * | 1979-11-13 | 1982-11-23 | General Electric Company | Metal halide lamp containing ThI4 with added elemental cadmium or zinc |
HU178828B (en) * | 1980-01-19 | 1982-07-28 | Egyesuelt Izzolampa | Electric discharging lamp of ceramic bulb with ignition electrode introduced through the hole of casing surface |
US4575656A (en) * | 1980-12-08 | 1986-03-11 | Gte Products Corporation | Starting aid for non-linear discharge lamps and method of making same |
US4529914A (en) * | 1982-09-30 | 1985-07-16 | Nec Home Electronics, Ltd. | High intensity discharge lamp ignition system |
JPH067474B2 (en) * | 1985-04-18 | 1994-01-26 | 東芝ライテック株式会社 | Compact high pressure metal vapor discharge lamp |
DE3519611A1 (en) * | 1985-05-31 | 1986-12-04 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 8000 München | MOTOR VEHICLE HEADLAMP UNIT |
SU1365180A1 (en) * | 1985-11-13 | 1988-01-07 | Саранское производственное объединение "Светотехника" | High-pressure gas-discharge lamp |
KR900002446B1 (en) * | 1986-05-30 | 1990-04-14 | 가부시끼 가이샤 도시바 | Inacrive gas discharge lamp device |
US4804888A (en) * | 1987-10-22 | 1989-02-14 | Ushio Denki Kabushiki Kaisha | Low starting voltage short-arc discharge lamp |
JPH065259A (en) * | 1992-06-18 | 1994-01-14 | Hamamatsu Photonics Kk | Metallic vapor discharge tube |
JP3213771B2 (en) * | 1992-08-21 | 2001-10-02 | 松下電器産業株式会社 | Horizontal lighting high pressure discharge lamp |
JPH06290754A (en) * | 1993-03-31 | 1994-10-18 | Toshiba Lighting & Technol Corp | High pressure discharge lamp and semiconductor exposure device and projection device using this discharge lamp |
JPH06314555A (en) * | 1993-04-30 | 1994-11-08 | Toshiba Lighting & Technol Corp | High pressure electric discharge lamp and floodlight using same |
JP3223008B2 (en) * | 1993-10-21 | 2001-10-29 | 松下電器産業株式会社 | Metal halide lamp with reflector and lighting device |
US5610477A (en) * | 1994-04-26 | 1997-03-11 | Mra Technology Group | Low breakdown voltage gas discharge device and methods of manufacture and operation |
-
1996
- 1996-03-16 DE DE19610387A patent/DE19610387A1/en not_active Ceased
-
1997
- 1997-03-06 EP EP97916328A patent/EP0886881B1/en not_active Expired - Lifetime
- 1997-03-06 WO PCT/DE1997/000423 patent/WO1997035335A1/en active IP Right Grant
- 1997-03-06 DE DE59701881T patent/DE59701881D1/en not_active Expired - Lifetime
- 1997-03-06 JP JP9533021A patent/JP2000506672A/en not_active Ceased
- 1997-03-06 US US09/142,954 patent/US6445129B1/en not_active Expired - Fee Related
Non-Patent Citations (1)
Title |
---|
See references of WO9735335A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59701881D1 (en) | 2000-07-20 |
US6445129B1 (en) | 2002-09-03 |
DE19610387A1 (en) | 1997-09-18 |
EP0886881B1 (en) | 2000-06-14 |
JP2000506672A (en) | 2000-05-30 |
WO1997035335A1 (en) | 1997-09-25 |
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