EP0231935B1 - Dazzle headlight lamp for motor vehicles - Google Patents

Dazzle headlight lamp for motor vehicles Download PDF

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Publication number
EP0231935B1
EP0231935B1 EP87101470A EP87101470A EP0231935B1 EP 0231935 B1 EP0231935 B1 EP 0231935B1 EP 87101470 A EP87101470 A EP 87101470A EP 87101470 A EP87101470 A EP 87101470A EP 0231935 B1 EP0231935 B1 EP 0231935B1
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EP
European Patent Office
Prior art keywords
pressure discharge
discharge lamp
lamp according
web
bulb
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
EP87101470A
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German (de)
French (fr)
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EP0231935A3 (en
EP0231935A2 (en
Inventor
Manfred Gaugel
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.)
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Publication of EP0231935A2 publication Critical patent/EP0231935A2/en
Publication of EP0231935A3 publication Critical patent/EP0231935A3/en
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J5/00—Details relating to vessels or to leading-in conductors common to two or more basic types of discharge tubes or lamps
    • H01J5/50—Means forming part of the tube or lamps for the purpose of providing electrical connection to it
    • H01J5/54—Means forming part of the tube or lamps for the purpose of providing electrical connection to it supported by a separate part, e.g. base
    • H01J5/56—Shape of the separate part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/17—Discharge light sources

Definitions

  • the invention relates to a high-pressure discharge lamp for use in motor vehicle headlights in accordance with the preamble of claim 1.
  • Such a high-pressure discharge lamp is known from GB-A 2 132 011, the base being made in one piece and the holding element being formed by the power supply line carrying the shielding agent.
  • the anti-glare agent can e.g. be designed as a ceramic screen.
  • US Pat. No. 4,412,273 describes a halogen incandescent lamp for motor vehicle headlights. The halogen incandescent lamp is fastened adjustable in a base sleeve via a holder.
  • two-filament light bulbs are frequently used in the high-beam and low-beam headlamps used in many motor vehicles, the light-emitting element provided for the low-beam light being partially shielded by a dimming cap arranged in the lamp bulb.
  • Pure low-beam headlights for the use of single-filament light bulbs have a shielding means which is arranged outside the lamps and is arranged on the reflector of the headlight or the lamp holder.
  • the invention has for its object a high-pressure discharge lamp for use in motor vehicle headlights to create, which has a shielding agent located outside the lamp bulb.
  • the lamp bulb and the shielding means should form a structural unit that is as simple as possible in terms of construction, and which, using appropriate materials, permits the use of very high surge voltages, as are required in particular in the hot ignition of high-pressure discharge lamps.
  • Shielding means and holding element can consist in one piece of a plastic part; For reasons of temperature resistance, freedom from outgassing and high-voltage insulation, however, when using high-pressure discharge lamps as the light source (s) for motor vehicle headlights, it is advantageous to produce the dimming agent from ceramic.
  • the shielding means has a plate formed on one of its end faces, which is placed on plastic pins which are formed on the fastening body of the holding element and is connected, for example by ultrasonic riveting, to the fastening body of the holding element.
  • the anti-dazzle agent itself consists of a web with a groove, the concave curvature of which faces the lamp bulb.
  • the axis of curvature of the channel generally coincides with the longitudinal axis of the lamp and the curvature itself encloses an angle ⁇ of less than 180 °.
  • the curvature encloses the angle ⁇ of 165 °.
  • This holding element 5 has a slightly barrel-shaped, curved fastening body 6 made of plastic, which is surrounded at its thickest point by a ring 7 made of ferromagnetic material, which is sunk in a groove.
  • the holding element 5 is inserted with its barrel-shaped fastening body 6 into a cylindrical recess in the base sleeve 4 (also made of plastic) and, due to the shape of the fastening body 6, can be moved in a certain range in all directions with respect to the base sleeve 4. Only after the lamp bulb 1 has been adjusted are the holding element 5 and the base sleeve 4 connected by high-frequency heating, the plastic being melted in the region of the metal ring 7.
  • the barrel-shaped fastening body 6 of the holding element 5 are facing the lamp bulb 1 on it Shaped side pin 8, on which a plate 9 provided with corresponding openings is placed and riveted.
  • the plate 9 has a further opening 10 through which one of the power supply lines 2 of the lamp bulb 1 is guided and fastened.
  • a web 11 made of insulating material is formed on the plate 9 and extends parallel to the lamp axis AA. Because of the high operating temperature that arises at the lamp bulb 1, the plate 9 and the web 11 are advantageously made of ceramic.
  • the web 11 carries at its free end a contact element 12 to which the second power supply 3 of the lamp bulb 1 is attached.
  • connection 18 between this second power supply 3 of the lamp bulb 1 and the base contact 13 is arranged on the side of the web 11 facing away from the lamp bulb 1, recessed therein.
  • the lamp bulb 1 can be surrounded by a heating winding 17 for accelerating the start-up of the lamp, the connecting wires of which are also guided along the side of the web 11 facing away from the lamp bulb 1.
  • the web 11 has a groove, the concave groove 14 facing the lamp bulb 1. This web 11 acts as a dimming means to fulfill the asymmetrical light distribution required for road traffic.
  • the angle ⁇ , which is enclosed by the channel arch 14, is 165 ° in this exemplary embodiment.
  • the base of the lamp consists of the holding element 5 carrying the lamp bulb 1, a base sleeve 4 with an integrally formed adjusting ring 15, base contacts 13 and a cover element 16.
  • the holding element 5 with its barrel-shaped fastening body 6 is in the cylindrical recess of the base sleeve 4 used, both parts 4, 6 interacting like a ball joint and then firmly connected by high-frequency heating.
  • the base of the base sleeve 4 has bores whose diameter is slightly larger than that of the power supply 2 to be passed through or connecting wires 18 between the power supply 3 or heating wire 17 and base contacts 13.
  • the base contacts 13 are anchored in the back of the base base and the connection points between the power supply 2, heating wire 17, connecting wires 18 and base contacts 13 are also on this side.
  • the back of the base base is provided with a cover element 16.
  • Figure 2 shows the lamp in plan view.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)

Description

Die Erfindung betrifft eine Hochdruckentladungslampe für die Verwendung in Kraftfahrzeugscheinwerfern gemäß dem Oberbegriff des Anspruchs 1.The invention relates to a high-pressure discharge lamp for use in motor vehicle headlights in accordance with the preamble of claim 1.

Aus der GB-A 2 132 011 ist eine solche Hochdruckentladungslampe bekannt, wobei der Sockel einteilig ausgeführt und das Haltelement durch die das Abblendmittel tragende Stromzuführung gebildet wird. Das Abblendmittel kann hier z.B. als keramischer Schirm ausgeführt sein. In der US-A 4 412 273 wird eine Halogenglühlampe für Kraftfahrzeugscheinwerfer beschrieben. Die Halogenglühlampe ist dabei über eine Halterung justierbar in einer Sockelhülse befestigt.Such a high-pressure discharge lamp is known from GB-A 2 132 011, the base being made in one piece and the holding element being formed by the power supply line carrying the shielding agent. The anti-glare agent can e.g. be designed as a ceramic screen. US Pat. No. 4,412,273 describes a halogen incandescent lamp for motor vehicle headlights. The halogen incandescent lamp is fastened adjustable in a base sleeve via a holder.

In den bei vielen Kraftfahrzeugen verwendeten Fern- und Abblendlichtscheinwerfern werden bekanntlich häufig Zweifadenglühlampen eingesetzt, wobei der für das Abblendlicht vorgesehene Leuchtkörper teilweise von einer im Lampenkolben angeordneten Abblendkappe abgeschirmt ist.As is known, two-filament light bulbs are frequently used in the high-beam and low-beam headlamps used in many motor vehicles, the light-emitting element provided for the low-beam light being partially shielded by a dimming cap arranged in the lamp bulb.

Reine Abblendlichtscheinwerfer für die Verwendung von Einfadenglühlampen weisen ein außerhalb der Lampen angeordnetes Abblendmittel auf, das an dem Reflektor des Scheinwerfers bzw. der Lampenfassung angeordnet ist.Pure low-beam headlights for the use of single-filament light bulbs have a shielding means which is arranged outside the lamps and is arranged on the reflector of the headlight or the lamp holder.

Der Erfindung liegt die Aufgabe zugrunde, eine Hochdruckentladungslampe für die Verwendung in Kraftfahrzeugscheinwerfern zu schaffen, die ein außerhalb des Lampenkolbens befindliches Abblendmittel aufweist. Dabei sollen Lampenkolben und Abblendmittel eine in der Konstruktion möglichst einfache Baueinheit bilden, die unter Verwendung entsprechender Materialien die Anwendung sehr hoher Stoßspannungen zuläßt, wie sie insbesondere bei der Heißzündung von Hochdruckentladungslampen erforderlich sind.The invention has for its object a high-pressure discharge lamp for use in motor vehicle headlights to create, which has a shielding agent located outside the lamp bulb. In this case, the lamp bulb and the shielding means should form a structural unit that is as simple as possible in terms of construction, and which, using appropriate materials, permits the use of very high surge voltages, as are required in particular in the hot ignition of high-pressure discharge lamps.

Vorliegende Aufgabe ist erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruch 1 gelöst. Abblendmittel und Halteelement können dabei einstückig aus einem Kunststoffteil bestehen; aus Gründen der Temperaturbeständigkeit, Ausgasungsfreiheit und Hochspannnungsisolation ist es jedoch bei der Verwendung von Hochdruckentladungslampen als Lichtquelle(n) für Kraftfahrzeugscheinwerfer vorteilhaft, das Abblendmittel aus Keramik herzustellen. Für diesen Fall ist dem Abblendmittel an einer seiner Stirnseiten eine Platte angeformt, die auf Kunststoffzapfen, die dem Befestigungskörper des Haltelementes angeformt sind, aufgesetzt und beispielsweise durch Ultraschallnietung mit dem Befestigungskörper des Halteelementes verbunden ist.The present object is achieved according to the invention by the characterizing features of claim 1. Shielding means and holding element can consist in one piece of a plastic part; For reasons of temperature resistance, freedom from outgassing and high-voltage insulation, however, when using high-pressure discharge lamps as the light source (s) for motor vehicle headlights, it is advantageous to produce the dimming agent from ceramic. In this case, the shielding means has a plate formed on one of its end faces, which is placed on plastic pins which are formed on the fastening body of the holding element and is connected, for example by ultrasonic riveting, to the fastening body of the holding element.

Das Abblendmittel selbst besteht aus einem Steg mit Rinne, deren konkave Wölbnung dem Lampenkolben zugewandt ist. Die Wölbungsachse der Rinne fällt im allgemeinen mit der Lampenlängsachse zusammen und die Wölbung selbst umschließt einen Winkel α kleiner 180°. Um die nach ECE-Vorschrift geforderte asymmetrische Hell-Dunkel-Grenze zu erhalten, umschließt die Wölbung den Winkel α von 165°.The anti-dazzle agent itself consists of a web with a groove, the concave curvature of which faces the lamp bulb. The axis of curvature of the channel generally coincides with the longitudinal axis of the lamp and the curvature itself encloses an angle α of less than 180 °. In order to obtain the asymmetrical cut-off line required by the ECE regulation, the curvature encloses the angle α of 165 °.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispiels näher erläutert. Es zeigt:

Figur 1
das Ausführungsbeispiel der erfindungsgemäßen Lampe in Seitenansicht teilweise geschnitten
Figur 2
die Draufsicht der Lampe nach Figur 1
Die in Figur 1 dargestellte Lampe für die Verwendung in Kraftfahrzeugscheinwerfern besteht aus einem zweiseitig gequetschten Hochdruckentladungslampenkolben 1, an dessen Quetschungen je eine Stromzuführung 2, 3 herausgeführt ist. Über diese Stromzuführungen 2, 3 ist der Lampenkolben 1 mit einem gegenüber der Sockelhülse 4 justierbaren Halteelement 5 verbunden.The invention is explained in more detail below using an exemplary embodiment. It shows:
Figure 1
the embodiment of the lamp according to the invention partially cut in side view
Figure 2
the top view of the lamp of Figure 1
The lamp shown in FIG. 1 for use in motor vehicle headlights consists of a high-pressure discharge lamp bulb 1, which is pinched on both sides and has a power supply line 2, 3 at each pinch. The lamp bulb 1 is connected to a holding element 5 that is adjustable relative to the base sleeve 4 via these current leads 2, 3.

Dieses Halteelement 5 weist einen leicht faßförmig gewölbten Befestigungskörper 6 aus Kunststoff auf, der an seiner dicksten Stelle von einem in einer Nut versenkt angeordneten Ring 7 aus ferromagnetischem Material umgeben ist. Das Halteelement 5 ist mit seinem faßförmigen Befestigungskörper 6 in eine zylindrische Aussparung der Sockelhülse 4 (ebenfalls aus Kunststoff) eingesetzt und ist, bedingt durch die Form des Befestigungskörpers 6, gegenüber der Sockelhülse 4 in einem gewissen Bereich in alle Richtungen bewegbar. Erst nach Justierung des Lampenkolbens 1 werden Halteelement 5 und Sockelhülse 4 durch Hochfrequenzerwärmen, wobei der Kunststoff im Bereich des Metallringes 7 zum Schmelzen gebracht wird, miteinander verbunden.This holding element 5 has a slightly barrel-shaped, curved fastening body 6 made of plastic, which is surrounded at its thickest point by a ring 7 made of ferromagnetic material, which is sunk in a groove. The holding element 5 is inserted with its barrel-shaped fastening body 6 into a cylindrical recess in the base sleeve 4 (also made of plastic) and, due to the shape of the fastening body 6, can be moved in a certain range in all directions with respect to the base sleeve 4. Only after the lamp bulb 1 has been adjusted are the holding element 5 and the base sleeve 4 connected by high-frequency heating, the plastic being melted in the region of the metal ring 7.

Dem faßförmigen Befestigungskörper 6 des Halteelementes 5 sind auf seiner dem Lampenkolben 1 zugewandten Seite Zapfen 8 angeformt, auf die eine mit entsprechenden Öffnungen versehene Platte 9 aufgesetzt und vernietet ist. Die Platte 9 weist eine weitere Öffnung 10 auf, durch die eine der Stromzuführungen 2 des Lampenkolbens 1 hindurchgeführt und befestigt ist. Zur weiteren Halterung des Lampenkolbens 1 ist an der Platte 9 ein Steg 11 aus isolierendem Material angeformt, der sich parallel zur Lampenachse A-A erstreckt. Aufgrund der an dem Lampenkolben 1 entstehenden hohen Betriebstemperatur sind Platte 9 und Steg 11 vorteilhafterweise aus Keramik gefertigt. Der Steg 11 trägt an seinem freien Ende ein Kontaktelement 12, an dem die zweite Stromzuführung 3 des Lampenkolbens 1 befestigt ist.The barrel-shaped fastening body 6 of the holding element 5 are facing the lamp bulb 1 on it Shaped side pin 8, on which a plate 9 provided with corresponding openings is placed and riveted. The plate 9 has a further opening 10 through which one of the power supply lines 2 of the lamp bulb 1 is guided and fastened. To further hold the lamp bulb 1, a web 11 made of insulating material is formed on the plate 9 and extends parallel to the lamp axis AA. Because of the high operating temperature that arises at the lamp bulb 1, the plate 9 and the web 11 are advantageously made of ceramic. The web 11 carries at its free end a contact element 12 to which the second power supply 3 of the lamp bulb 1 is attached.

Die Verbindung 18 zwischen dieser zweiten Stromzuführung 3 des Lampenkolbens 1 und dem Sockelkontakt 13 ist auf der vom Lampenkolben 1 abgewandten Seite des Steges 11, in diesem versenkt, angeordnet.The connection 18 between this second power supply 3 of the lamp bulb 1 and the base contact 13 is arranged on the side of the web 11 facing away from the lamp bulb 1, recessed therein.

Zusätzlich kann der Lampenkolben 1 von einer Heizwicklung 17 zum Beschleunigen des Anlaufs der Lampe umgeben sein, deren Anschlußdrähte ebenfalls auf der dem Lampenkolben 1 abgewandten Seite des Steges 11 entlanggeführt sind.In addition, the lamp bulb 1 can be surrounded by a heating winding 17 for accelerating the start-up of the lamp, the connecting wires of which are also guided along the side of the web 11 facing away from the lamp bulb 1.

Der Steg 11 weist eine Rinne auf, wobei die konkave Rinnenwölbung 14 dem Lampenkolben 1 zugewandt ist. Dieser Steg 11 wirkt als Abblendmittel zur Erfüllung der für den Straßenverkehr geforderten asymmetrischen Lichtverteilung. Der Winkel α, der von der Rinnenwölbung 14 eingeschlossen ist, beträgt in diesem Ausführungsbeispiel 165°.The web 11 has a groove, the concave groove 14 facing the lamp bulb 1. This web 11 acts as a dimming means to fulfill the asymmetrical light distribution required for road traffic. The angle α, which is enclosed by the channel arch 14, is 165 ° in this exemplary embodiment.

Der Sockel der Lampe besteht aus dem den Lampenkolben 1 tragenden Halteelement 5, einer Sockelhülse 4 mit angeformtem Einstellring 15, Sockelkontakten 13 und einem Abdeckelement 16. Wie bereits beschrieben wurde, ist das Halteelement 5 mit seinem faßförmigen Befestigungskörper 6 in der zylindrischen Ausnehmung der Sockelhülse 4 eingesetzt, wobei beide Teile 4, 6 wie ein Kugelgelenk zusammenwirken und anschließend durch Hochfrequenzerwärmen fest verbunden werden. Der Boden der Sockelhülse 4 weist Bohrungen auf, deren Durchmesser geringfügig größer ist als der der hindurchzuführenden Stromzuführung 2 bzw. Verbindungsdrähte 18 zwischen Stromzuführung 3 oder Heizdraht 17 und Sockelkontakten 13.The base of the lamp consists of the holding element 5 carrying the lamp bulb 1, a base sleeve 4 with an integrally formed adjusting ring 15, base contacts 13 and a cover element 16. As already described, the holding element 5 with its barrel-shaped fastening body 6 is in the cylindrical recess of the base sleeve 4 used, both parts 4, 6 interacting like a ball joint and then firmly connected by high-frequency heating. The base of the base sleeve 4 has bores whose diameter is slightly larger than that of the power supply 2 to be passed through or connecting wires 18 between the power supply 3 or heating wire 17 and base contacts 13.

In der Rückseite des Sockelbodens sind die Sockelkontakte 13 verankert und auch die Verbindungsstellen zwischen Stromzuführung 2, Heizdraht 17, Verbindungsdrähten 18 und Sockelkontakten 13 liegen auf dieser Seite. Zum Schutz der Verbindungsstellen ist die Rückseite des Sockelbodens mit einem Abdeckelement 16 versehen.The base contacts 13 are anchored in the back of the base base and the connection points between the power supply 2, heating wire 17, connecting wires 18 and base contacts 13 are also on this side. To protect the connection points, the back of the base base is provided with a cover element 16.

Um Spannungsüberschläge zwischen den im Sockelteil gelegenen stromführenden Teilen 2, 13, 17, 18 zu vermeiden, sind die von Halteelement 5 und Sockelhülse 4 sowie Sockelhülse 4 und Abdeckelement 16 gebildeten Hohlräume mit einem Silikonharz ausgefüllt oder mit isolierenden Stegen versehen, die die stromführenden Teile ausreichend voneinander trennen. Das Abdeckelement 16 ist auf dem Sockelboden aufgeschnappt.
Zum besseren Verständnis zeigt die Figur 2 die Lampe in Draufsicht.In order to avoid voltage flashovers between the current-carrying parts 2, 13, 17, 18 in the base part, the cavities formed by the holding element 5 and base sleeve 4 as well as base sleeve 4 and cover element 16 are filled with a silicone resin or provided with insulating webs that are sufficient for the current-carrying parts separate from each other. The cover element 16 is snapped onto the base floor.
For better understanding, Figure 2 shows the lamp in plan view.

Claims (11)

  1. High-pressure discharge lamp for use in motor vehicle headlights consisting of a lamp bulb (1) having supply leads (2, 3) which are led out from both ends of the bulb, a cap shell (4), a retaining element (5) which fixes the lamp bulb (1) and has a mounting body (6) inserted in the cap shell (4), at least two cap contacts (13) which are electrically conductively connected at least to the supply leads (2, 3) of the lamp bulb (1), and anti-dazzle means for producing the asymmetric light distribution customary in motor vehicle headlights, these anti-dazzle means being a part of the retaining element (5) fixing the lamp bulb (1), consisting of electrically insulating, thermostable material and being mounted on the mounting body (6) of the retaining element (5).
  2. High-pressure discharge lamp according to Claim 1, in which the anti-dazzle means consist of ceramic.
  3. High-pressure discharge lamp according to Claim 1, in which the anti-dazzle means consist of a web (11) with a groove whose concave camber (14) faces the lamp bulb (1).
  4. High-pressure discharge lamp according to Claim 3, in which the web (11) is provided at one of its end faces with a plate (9), and is mounted via this plate (9) on the mounting body (6) of the retaining element (5), which is connected to the cap shell (4).
  5. High-pressure discharge lamp according to Claim 4, in which the plate (9) is ultrasonically riveted to the mounting body (6) of the retaining element (5) made from plastic.
  6. High-pressure discharge lamp according to Claim 3, in which the camber axis of the groove of the web (11) coincides with the longitudinal axis of the lamp bulb (1).
  7. High-pressure discharge lamp according to Claim 3, in which the groove camber (14) encloses an angle α of less than 180°.
  8. High-pressure discharge lamp according to Claim 3, in which the groove camber (14) encloses an angle α of 165°.
  9. High-pressure discharge lamp according to Claim 3, in which the connection (18) between the cap contact (13) and the lamp supply lead (3) arranged averted from the cap contact (13) is led along on the side of the web (11) averted from the lamp bulb (1).
  10. High-pressure discharge lamp according to Claim 3, in which the lamp bulb (1) is surrounded by a heater winding (17) whose connection with the cap contacts (13) is likewise led along on the side of the web (11) averted from the lamp bulb (1).
  11. High-pressure discharge lamp according to Claims 9 and 10, in which the connections (18) between the lamp supply lead (3) and the cap contact (13) as well as the heater winding (17) and the cap contact (13) are arranged countersunk in the body of the web (11).
EP87101470A 1986-02-06 1987-02-04 Dazzle headlight lamp for motor vehicles Expired - Lifetime EP0231935B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3603743 1986-02-06
DE19863603743 DE3603743A1 (en) 1986-02-06 1986-02-06 HIGH PRESSURE DISCHARGE LAMP FOR USE IN MOTOR VEHICLE HEADLIGHTS

Publications (3)

Publication Number Publication Date
EP0231935A2 EP0231935A2 (en) 1987-08-12
EP0231935A3 EP0231935A3 (en) 1989-10-18
EP0231935B1 true EP0231935B1 (en) 1993-05-26

Family

ID=6293573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87101470A Expired - Lifetime EP0231935B1 (en) 1986-02-06 1987-02-04 Dazzle headlight lamp for motor vehicles

Country Status (4)

Country Link
US (1) US4722039A (en)
EP (1) EP0231935B1 (en)
JP (1) JPS62184757A (en)
DE (2) DE3603743A1 (en)

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Also Published As

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JPS62184757A (en) 1987-08-13
US4722039A (en) 1988-01-26
DE3785940D1 (en) 1993-07-01
DE3603743A1 (en) 1987-08-13
EP0231935A3 (en) 1989-10-18
EP0231935A2 (en) 1987-08-12

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