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WO1999048721A1 - Automobile headlight system for emission of modifiable beams of light - Google Patents

Automobile headlight system for emission of modifiable beams of light Download PDF

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Publication number
WO1999048721A1
WO1999048721A1 PCT/DE1998/003522 DE9803522W WO9948721A1 WO 1999048721 A1 WO1999048721 A1 WO 1999048721A1 DE 9803522 W DE9803522 W DE 9803522W WO 9948721 A1 WO9948721 A1 WO 9948721A1
Authority
WO
WIPO (PCT)
Prior art keywords
headlight
unit
light
emitted
subunit
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.)
Ceased
Application number
PCT/DE1998/003522
Other languages
German (de)
French (fr)
Inventor
Gerhard Weihing
Ralf Steinhart
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO1999048721A1 publication Critical patent/WO1999048721A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/18—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights being additional front lights
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors

Definitions

  • the invention relates to a headlamp system for vehicles for emitting variable light beams according to the preamble of claim 1.
  • Such a headlight system is known from DE 43 13 914 AI.
  • This headlight system has at least one headlight unit, which in turn has a plurality of headlight subunits, through which light beams with different characteristics are emitted.
  • At least one headlight subunit is provided, through which a basic low beam is emitted.
  • at least one headlight subunit is provided, through which a light beam scattered on one side is emitted.
  • the headlight subunits are arranged next to one another, but this is not advantageous in view of the different characteristics of the light beams emitted by the headlight subunits, since in this case there is no optimal use of the
  • the headlight system according to the invention for emitting variable light bundles with the features according to claim 1 has the advantage that the at least one further headlight subunit is arranged in such a way that the light bundle emitted by it on one side can be optimally used for illuminating lateral road areas or when the vehicle is cornering.
  • FIG. 1 shows a vehicle in a front view with two headlight units
  • FIG. 2 shows a headlight unit in a front view according to a first exemplary embodiment
  • FIG. 3 shows the headlight unit in a modified embodiment
  • FIG. 4 shows a measuring screen arranged at a distance from the headlight unit when illuminated by the headlight unit first light bundle emitted according to the first exemplary embodiment
  • FIG. 5 the measuring screen when illuminated by second light bundle emitted by the headlight unit.
  • the headlight units 10, 11 are fastened to the front end of the vehicle in a conventional manner, not shown.
  • the headlight units 10, 11 each have a plurality of headlight subunits, which will be explained in more detail below.
  • the headlight units 10, 11 can also each contain a turn signal lamp 12, 13, which is arranged toward the respective outer vehicle edge 14, 15.
  • the direction indicators 12, 13 can also be used by the
  • Headlight units 10, 11 are separate components which are assembled with the headlight units 10, 11 or are fastened independently of them to the front end of the vehicle.
  • the headlight units 10, 11 each have at least one headlight subunit 20, through which a basic low-beam light beam is emitted during its operation.
  • the headlight subunit 20 has, for example, a light source 22 in the form of an incandescent lamp, one
  • the headlight subunit 20 can also be connected to a remotely located light source via light guides.
  • the headlight subunit 20 can also have a reflector 24, through which light emitted by the light source 22 or light emerging from the light guides is collected and reflected.
  • a lens 26 can be arranged in the beam path of the light reflected by the reflector 24, through which the light passing through is collected or scattered.
  • a light-transmitting pane 28 can also be arranged in the beam path of the light reflected by the reflector 24, which can have optical profiles through which light passing through is deflected and / or scattered.
  • the pane 28 can also serve as a cover pane for the headlight unit 10, 11 as a whole.
  • FIG. 4 shows a measuring screen 80 arranged at a distance from the headlight unit 10.
  • the vertical center plane of the measuring screen 80 is designated W and its horizontal center plane is designated HH.
  • the vertical center plane W and the horizontal center plane HH intersect at point HV.
  • the measuring screen 80 is illuminated in a region 82 by the basic low beam bundle emitted by the headlight subunit 20 in its operation.
  • the area 82 is delimited at the top by a light-dark boundary, which on the oncoming traffic side, that is the left side of the measuring screen 80 in the exemplary embodiments illustrated for right-hand traffic, has a section 84 which runs approximately horizontally below the horizontal central plane HH.
  • the light-dark boundary On its own traffic side, which is the right side of the measuring screen 80 in the illustrated exemplary embodiments for right-hand traffic, the light-dark boundary has a section 86 rising from the horizontal section 84 to the right edge of the measuring screen 80 beyond the horizontal central plane HH.
  • the basic low beam bundle emitted by the at least one headlight subunit 20 has such a characteristic that the area 82 is illuminated with the legally prescribed illuminance distribution, the highest illuminance levels being present in a zone 83 below the point HV and just below the light-dark boundary 84.86 are. - 5 -
  • the headlight unit 10, 11 shown in FIG. 2 has, in addition to the at least one headlight subunit 20, by means of which the
  • At least one further headlight subunit 30 Low beam is emitted, at least one further headlight subunit 30.
  • the structure of the headlight subunit 30 can be the same with respect to the light source 32, the reflector 34, the lens 36 and the disk 38 as above
  • Headlight sub-unit 20 described. to
  • Headlight subunit 30 can also be guided via light guides from a remote light source so that the headlight subunit 30 need not have its own light source.
  • FIG. 2 shows the headlight unit 10 provided on the right for mounting on the vehicle in the direction of travel.
  • the headlight subunit 30 is arranged closest to the outer vehicle edge 14 of all the headlight subunits of the headlight unit 10, that is to say as far to the right as possible in the direction of travel of the vehicle.
  • a beam of light is emitted by the headlight subunit 30, which has a one-sided scattering to the right and through which a region 88 of the measuring screen 80 is illuminated, which is arranged at least essentially only to the right of the vertical center plane W.
  • the area 88 has a lower height than the area 82 illuminated by the headlight subunit 10 and is arranged at a distance below the light-dark boundary 86. In the lateral direction to the right, the area 88 extends further than the area 82
  • Headlight subunit 30 emitted light bundle is thus illuminated above all the right edge of the road and areas beyond it, which is particularly when driving through - 6 -
  • a right turn is advantageous because the course of the road is illuminated.
  • FIG. 2 shows the headlight unit 10 on the right in the direction of travel, the headlight unit 10 shown in FIG.
  • Driving direction left headlight unit 11 also has at least one further headlight sub-unit 30, the structure of which is the same as that of the headlight unit of the right headlight unit 10.
  • Headlight unit 11 is arranged in mirror image to that of the right headlight unit 10 so that it is arranged as close as possible to the left outer vehicle edge 15.
  • a light beam which is scattered on one side to the left and which illuminates the measuring screen 80 in the area 90 is emitted.
  • the area 90 is at least approximately a mirror image of the area 88 and at least substantially to the left of the vertical central plane W.
  • the two areas 88 and 90 can partially overlap in a zone around the vertical central plane W.
  • the light beam emitted by the headlight subunit 30 of the left headlight unit 11 thus illuminates above all the left edge of the road and areas beyond it, which is particularly advantageous when driving through a left-hand bend, since it illuminates the course of the road.
  • the areas 88, 90 can each run obliquely downwards towards the edge of the measuring screen 80.
  • the operation of the headlight subunits 30 can be controlled, for example, depending on the steering angle of the vehicle or depending on a control device - 7 -
  • the turn signal lamp 12 extends only over part of the height of the headlight unit 10 and
  • Headlight subunit 30 is arranged above the turn signal lamp 12. The headlight subunit 30 is thus arranged as close as possible to the outer edge of the vehicle 14.
  • the flashing light 12 extends over the entire height of the headlight unit 10 and the headlight subunit 30 is arranged adjacent to the flashing light 12.
  • the headlight subunit 30 can extend over the entire height of the headlight unit 10 or only over a part of its height.
  • the headlight subunit 20 emitting the low beam bundle illuminating the area 82 of the measuring screen 80 is arranged in a lower area of the headlamp unit 10 and extends, for example, only over part of the height of the headlamp unit 10.
  • the headlamp subunit 20 is in a lower area of the headlight unit 10 adjacent to the turn signal lamp 12 and the headlight sub-unit 30.
  • one or more further headlight subunits can be arranged, through which light beams with different characteristics are emitted and which can be used, for example, to generate fog light or can be operated together with the headlight subunit 20 to generate the high beam.
  • the headlight unit 10 there is additionally at least one arranged further headlight sub-unit 40, the construction of which can be corresponding to the light source 42, the reflector 44, the lens 46 and the pane 48 as in the headlight unit 20.
  • the headlight subunit 40 does not need to have its own light source and can also be connected to a remotely located light source via light guides.
  • the headlight subunit 40 can be arranged above the headlight subunit 20, for example.
  • one or more further headlight subunits can be arranged toward the center of the vehicle, through which light beams with different characteristics are emitted and which can be operated, for example, together with the headlight subunit 20 and / or 40 to generate the high beam.
  • a concentrated light bundle is emitted, which illuminates the measuring screen 80 according to FIG. 5 in an area 92.
  • the measuring screen 80 is illuminated in the area 82 as already explained above.
  • the area 92 is superimposed on the area 82 and extends on both sides of the vertical center plane W of the measuring screen 80.
  • the area 92 can be over the light-dark boundary 84, 86 of the
  • Headlight subunit 20 emitted light bundles on a larger range without causing dazzling oncoming traffic.
  • the area 92 can extend beyond the light-dark boundary 84, 86 of the area 82 and an intensified illumination of the far area in front of the Effect vehicle.
  • Headlight subunit 40 emitted light bundle is thus additionally illuminated in the far range in front of the vehicle with low beam. Due to the higher arrangement of the headlight subunit 20
  • Headlight subunit 40 has the light beam emitted by it a greater geometric range than the light beam emitted by headlight subunit 20 and is therefore particularly suitable for illuminating the far area in front of the vehicle. This is particularly advantageous when the vehicle is traveling at high speed, since the visibility conditions for the vehicle driver in the long range are improved.
  • the operation of the headlamp subunit 40 can be controlled manually by the vehicle operator or automatically by a control device depending on the speed of the vehicle.
  • the left headlight unit 11 also has at least one further headlight subunit 40 arranged mirror-inverted.
  • the at least one further headlight subunit 40 is also additionally provided, which is arranged in the upper region of the headlight unit 10.
  • Headlamp subunit 40 extends across the width of the headlamp unit 10 from its inner edge facing the center of the vehicle to the headlamp subunit 30. In the left headlight unit 11, the arrangement of the headlamp unit 10
  • Headlight subunit 40 in turn is a mirror image of the right headlight unit 10 shown in FIG. 3. - 10 -
  • the embodiments of the headlight units 10, 11 explained above offer the advantage that the headlight subunits 30 and / or 40 are each arranged in the headlight units 10, 11 in such a way that the light beams emitted by them with their special characteristics are optimal for improving the lighting of the roadway can contribute to the vehicle.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The inventive automobile headlight system comprises at least one headlight unit (10) which in turn consists of several other sub-units (20,30, 40) through which beams of light with varying characteristics are emitted. At least one headlight sub-unit (20) emits a basic low beam. At least one other headlight sub-unit (30) arranged close to the outer edge (1) of the vehicle emits a scattered beam of light on one side in the direction of the outer edge of said vehicle. This beam provides greater illumination of the curve of the roadway when cornering in comparison with a basic low beam. At least one additional headlight sub-unit (40) is arranged in a higher position than the headlight sub-unit (20) that emits the basic low beam. Said additional sub-unit emits a concentrated beam of light which provides extra illumination of the distant area below the light/dark boundary of the basic low beam. This is particularly advantageous when the vehicle is travelling at high speeds.

Description

- 1 - - 1 -

Scheinwerferanlaαe für Fahrzeuge zur Aussendung veränderlicher LichtbündelHeadlight system for vehicles for emitting variable light beams

Stand der TechnikState of the art

Die Erfindung geht aus von einer Scheinwerferanlage für Fahrzeuge zur Aussendung veränderlicher Lichtbündel nach der Gattung des Anspruchs 1.The invention relates to a headlamp system for vehicles for emitting variable light beams according to the preamble of claim 1.

Eine solche Scheinwerferanlage ist durch die DE 43 13 914 AI bekannt . Diese Scheinwerferanlage weist wenigstens eine Scheinwerfereinheit auf, die wiederum mehrere Scheinwerferuntereinheiten aufweist, durch die Lichtbündel mit unterschiedlicher Charakteristik ausgesandt werden. Es ist wenigstens eine Scheinwerferuntereinheit vorgesehen, durch die ein Basis-Abblendlichtbündel ausgesandt wird. Außerdem ist wenigstens eine Scheinwerferuntereinheit vorgesehen, durch die ein einseitig gestreutes Lichtbündel ausgesandt wird. Die Scheinwerferuntereinheiten sind nebeneinander angeordnet, was jedoch in Anbetracht der unterschiedlichen Charakteristiken der von den Scheinwerferuntereinheiten ausgesandten Lichtbündel nicht vorteilhaft ist, da hierbei keine optimale Nutzung derSuch a headlight system is known from DE 43 13 914 AI. This headlight system has at least one headlight unit, which in turn has a plurality of headlight subunits, through which light beams with different characteristics are emitted. At least one headlight subunit is provided, through which a basic low beam is emitted. In addition, at least one headlight subunit is provided, through which a light beam scattered on one side is emitted. The headlight subunits are arranged next to one another, but this is not advantageous in view of the different characteristics of the light beams emitted by the headlight subunits, since in this case there is no optimal use of the

Lichtbündel zur Verbesserung der Sichtbedingungen für den Fahrzeuglenker möglich ist. Vorteile der ErfindungBeams of light to improve the visual conditions for the vehicle driver is possible. Advantages of the invention

Die erfindungsgemäße Scheinwerferanlage zur Aussendung veränderlicher Lichtbündel mit den Merkmalen gemäß Anspruch 1 hat demgegenüber den Vorteil, daß die wenigstens eine weitere Scheinwerferuntereinheit derart angeordnet ist, daß das von dieser ausgesandte einseitig gestreute Lichtbündel optimal genutzt werden kann zur Beleuchtung seitlicher Fahrbahnbereiche oder bei Kurvenfahrt des Fahrzeugs.The headlight system according to the invention for emitting variable light bundles with the features according to claim 1 has the advantage that the at least one further headlight subunit is arranged in such a way that the light bundle emitted by it on one side can be optimally used for illuminating lateral road areas or when the vehicle is cornering.

In den abhängigen Ansprüchen sind vorteilhafte Ausgestaltungen und Weiterbildungen der erfindungsgemäßen Scheinwerferanlage angegeben. Die Weiterbildung gemäß Anspruch 4 ermöglicht auch die optimale Nutzung des von der wenigstens einen zusätzlichen Scheinwerferuntereinheit ausgesandten Lichtbündels zur Beleuchtung des Fernbereichs .Advantageous refinements and developments of the headlight system according to the invention are specified in the dependent claims. The development according to claim 4 also enables the optimal use of the light beam emitted by the at least one additional headlight subunit for illuminating the far range.

Zeichnungdrawing

Mehrere Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt und in der nachfolgenden Beschreibung näher erläutert . Es zeigen Figur l ein Fahrzeug in einer Vorderansicht mit zwei Scheinwerfereinheiten, Figur 2 eine Scheinwerfereinheit in einer Vorderansicht gemäß einem ersten Ausführungsbeispiel, Figur 3 die Scheinwerfereinheit in einer modifizierten Ausführung, Figur 4 einen mit Abstand vor der Scheinwerfereinheit angeordneten Meßschirm bei Beleuchtung durch von der Scheinwerfereinheit gemäß dem ersten Ausführungsbeispiel ausgesandte erste Lichtbündel und Figur 5 den Meßschirm bei Beleuchtung durch von der Scheinwerfereinheit ausgesandte zweite Lichtbündel. - 3 -Several embodiments of the invention are shown in the drawing and explained in more detail in the following description. FIG. 1 shows a vehicle in a front view with two headlight units, FIG. 2 shows a headlight unit in a front view according to a first exemplary embodiment, FIG. 3 shows the headlight unit in a modified embodiment, and FIG. 4 shows a measuring screen arranged at a distance from the headlight unit when illuminated by the headlight unit first light bundle emitted according to the first exemplary embodiment and FIG. 5 the measuring screen when illuminated by second light bundle emitted by the headlight unit. - 3 -

Beschreibung der AusführungsbeispieleDescription of the embodiments

An einem in Figur 1 dargestellten Fahrzeug, insbesondere einem Kraftfahrzeug, sind in bekannter Weise an dessenOn a vehicle shown in Figure 1, in particular a motor vehicle, are in a known manner on the

Frontende mit Abstand zueinander zwei Scheinwerfereinheiten 10,11 angeordnet. Die Scheinwerfereinheiten 10,11 sind in üblicher, nicht dargestellter Weise am Frontende des Fahrzeugs befestigt. Die Scheinwerfereinheiten 10,11 weisen jeweils mehrere Scheinwerferuntereinheiten auf, die nachfolgend noch näher erläutert werden. Die Scheinwerfereinheiten 10,11 können außerdem auch jeweils eine Blinkleuchte 12,13 enthalten, die zum jeweiligen äußeren Fahrzeugrand 14,15 hin angeordnet ist. Die Blinkleuchten 12,13 können auch von denFront end spaced two headlight units 10,11 arranged. The headlight units 10, 11 are fastened to the front end of the vehicle in a conventional manner, not shown. The headlight units 10, 11 each have a plurality of headlight subunits, which will be explained in more detail below. The headlight units 10, 11 can also each contain a turn signal lamp 12, 13, which is arranged toward the respective outer vehicle edge 14, 15. The direction indicators 12, 13 can also be used by the

Scheinwerfereinheiten 10,11 getrennte Bauteile sein, die mit den Scheinwerfereinheiten 10,11 zusammengebaut sind oder unabhängig von diesen am Frontende des Fahrzeugs befestigt sind.Headlight units 10, 11 are separate components which are assembled with the headlight units 10, 11 or are fastened independently of them to the front end of the vehicle.

Die Scheinwerfereinheiten 10,11 weisen jeweils wenigstens eine Scheinwerferuntereinheit 20 auf, durch die bei deren Betrieb ein Basis-Abblendlichtbündel ausgesandt wird. Die Scheinwerferuntereinheit 20 weist beispielsweise eine Lichtquelle 22 in Form einer Glühlampe, einerThe headlight units 10, 11 each have at least one headlight subunit 20, through which a basic low-beam light beam is emitted during its operation. The headlight subunit 20 has, for example, a light source 22 in the form of an incandescent lamp, one

Entladungslampe oder einer Halbleiterlichtquelle wie Leuchtdiode. Alternativ kann die Scheinwerferuntereinheit 20 auch über Lichtleiter mit einer entfernt angeordneten Lichtquelle verbunden sein. Die Scheinwerferuntereinheit 20 kann außerdem einen Reflektor 24 aufweisen, durch den von der Lichtquelle 22 ausgesandtes Licht bzw. aus den Lichtleitern austretendes Licht gesammelt und reflektiert wird. Im Strahlengang des vom Reflektor 24 reflektierten Lichts kann eine Linse 26 angeordnet sein, durch die das hindurchtretende Licht gesammelt oder gestreut wird. Alternativ oder zusätzlich kann im Strahlengang des vom Reflektor 24 reflektierten Lichts auch eine lichtdurchlässige Scheibe 28 angeordnet sein, die optische Profile aufweisen kann, durch die hindurchtretendes Licht abgelenkt und/oder gestreut wird. Die Scheibe 28 kann auch als Abdeckscheibe für die Scheinwerfereinheit 10,11 insgesamt dienen.Discharge lamp or a semiconductor light source such as light emitting diode. Alternatively, the headlight subunit 20 can also be connected to a remotely located light source via light guides. The headlight subunit 20 can also have a reflector 24, through which light emitted by the light source 22 or light emerging from the light guides is collected and reflected. A lens 26 can be arranged in the beam path of the light reflected by the reflector 24, through which the light passing through is collected or scattered. Alternatively or additionally, a light-transmitting pane 28 can also be arranged in the beam path of the light reflected by the reflector 24, which can have optical profiles through which light passing through is deflected and / or scattered. The pane 28 can also serve as a cover pane for the headlight unit 10, 11 as a whole.

In Figur 4 ist ein mit Abstand vor der Scheinwerfereinheit 10 angeordneter Meßschirm 80 dargestellt. Die vertikale Mittelebene des Meßschirms 80 ist mit W bezeichnet und dessen horizontale Mittelebene ist mit HH bezeichnet. Die vertikale Mittelebene W und die horizontale Mittelebene HH schneiden sich im Punkt HV. Der Meßschirm 80 wird durch das von der Scheinwerferuntereinheit 20 in deren Betrieb ausgesandte Basis-Abblendlichtbündel in einem Bereich 82 beleuchtet. Der Bereich 82 ist nach oben durch eine Helldunkelgrenze begrenzt, die auf der Gegenverkehrsseite, das ist bei den dargestellten Ausführungsbeispielen für Rechtsverkehr die linke Seite des Meßschirms 80, einen unterhalb der horizontalen Mittelebene HH etwa horizontal verlaufenden Abschnitt 84 auf eist. Auf der eigenen Verkehrsseite, das ist bei den dargestellten Ausführungsbeispielen für Rechtsverkehr die rechte Seite des Meßschirms 80, weist die Helldunkelgrenze einen ausgehend vom horizontalen Abschnitt 84 zum rechten Rand des Meßschirms 80 hin über die horizontale Mittelebene HH hinaus ansteigenden Abschnitt 86 auf. Das von der wenigstens einen Scheinwerferuntereinheit 20 ausgesandte Basis- Abblendlichtbündel weist eine solche Charakteristik auf, daß der Bereich 82 mit der gesetzlich vorgeschriebenen Beleuchtungsstärkeverteilung beleuchtet wird, wobei in einer Zone 83 unterhalb des Punktes HV und dicht unterhalb der Helldunkelgrenze 84,86 die höchsten Beleuchtungsstärken vorhanden sind. - 5 -FIG. 4 shows a measuring screen 80 arranged at a distance from the headlight unit 10. The vertical center plane of the measuring screen 80 is designated W and its horizontal center plane is designated HH. The vertical center plane W and the horizontal center plane HH intersect at point HV. The measuring screen 80 is illuminated in a region 82 by the basic low beam bundle emitted by the headlight subunit 20 in its operation. The area 82 is delimited at the top by a light-dark boundary, which on the oncoming traffic side, that is the left side of the measuring screen 80 in the exemplary embodiments illustrated for right-hand traffic, has a section 84 which runs approximately horizontally below the horizontal central plane HH. On its own traffic side, which is the right side of the measuring screen 80 in the illustrated exemplary embodiments for right-hand traffic, the light-dark boundary has a section 86 rising from the horizontal section 84 to the right edge of the measuring screen 80 beyond the horizontal central plane HH. The basic low beam bundle emitted by the at least one headlight subunit 20 has such a characteristic that the area 82 is illuminated with the legally prescribed illuminance distribution, the highest illuminance levels being present in a zone 83 below the point HV and just below the light-dark boundary 84.86 are. - 5 -

Bei einem in Figur 2 dargestellten ersten Ausführungsbeispiel der Scheinwerfereinheit 10,11 weist diese zusätzlich zu der wenigstens einen Scheinwerferuntereinheit 20, durch die dasIn a first exemplary embodiment of the headlight unit 10, 11 shown in FIG. 2, it has, in addition to the at least one headlight subunit 20, by means of which the

Abblendlichtbündel ausgesandt wird, wenigstens eine weitere Scheinwerferuntereinheit 30 auf. Der Aufbau der Scheinwerferuntereinheit 30 kann hinsichtlich der Lichtquelle 32, des Reflektors 34, der Linse 36 sowie der Scheibe 38 gleich sein wie vorstehend zurLow beam is emitted, at least one further headlight subunit 30. The structure of the headlight subunit 30 can be the same with respect to the light source 32, the reflector 34, the lens 36 and the disk 38 as above

Scheinwerferuntereinheit 20 beschrieben. ZurHeadlight sub-unit 20 described. to

Scheinwerferuntereinheit 30 kann auch über Lichtleiter Licht von einer entfernt angeordneten Lichtquelle geführt werden, so daß die Scheinwerferuntereinheit 30 keine eigene Lichtquelle aufzuweisen braucht. In Figur 2 ist die für den Anbau am Fahrzeug in Fahrtrichtung gesehen rechts vorgesehene Scheinwerfereinheit 10 dargestellt. Die Scheinwerferuntereinheit 30 ist von sämtlichen Scheinwerferuntereinheiten der Scheinwerfereinheit 10 am nächsten zum äußeren Fahrzeugrand 14 hin angeordnet, das heißt in Fahrtrichtung des Fahrzeugs möglichst weit rechts.Headlight subunit 30 can also be guided via light guides from a remote light source so that the headlight subunit 30 need not have its own light source. FIG. 2 shows the headlight unit 10 provided on the right for mounting on the vehicle in the direction of travel. The headlight subunit 30 is arranged closest to the outer vehicle edge 14 of all the headlight subunits of the headlight unit 10, that is to say as far to the right as possible in the direction of travel of the vehicle.

Durch die Scheinwerferuntereinheit 30 wird ein Lichtbündel ausgesandt, das eine einseitige Streuung nach rechts aufweist und durch das ein Bereich 88 des Meßschirms 80 beleuchtet wird, der zumindest im wesentlichen nur rechts der vertikalen Mittelebene W angeordnet ist. Der Bereich 88 weist gegenüber dem durch die Scheinwerferuntereinheit 10 beleuchteten Bereich 82 eine geringere Höhe auf und ist mit Abstand unterhalb der Helldunkelgrenze 86 angeordnet. In seitlicher Richtung nach rechts reicht der Bereich 88 weiter als der Bereich 82. Durch das von derA beam of light is emitted by the headlight subunit 30, which has a one-sided scattering to the right and through which a region 88 of the measuring screen 80 is illuminated, which is arranged at least essentially only to the right of the vertical center plane W. The area 88 has a lower height than the area 82 illuminated by the headlight subunit 10 and is arranged at a distance below the light-dark boundary 86. In the lateral direction to the right, the area 88 extends further than the area 82

Scheinwerferuntereinheit 30 ausgesandte Lichtbündel wird somit vor allem der rechte Fahrbahnrand sowie Bereiche über diesen hinaus beleuchtet, was insbesondere bei Fahrt durch - 6 -Headlight subunit 30 emitted light bundle is thus illuminated above all the right edge of the road and areas beyond it, which is particularly when driving through - 6 -

eine Rechtskurve vorteilhaft ist, da dabei der Verlauf der Fahrbahn beleuchtet wird.a right turn is advantageous because the course of the road is illuminated.

In Figur 2 ist die in Fahrtrichtung rechte Scheinwerfereinheit 10 dargestellt, wobei die inFIG. 2 shows the headlight unit 10 on the right in the direction of travel, the headlight unit 10 shown in FIG

Fahrtrichtung linke Scheinwerfereinheit 11 ebenfalls wenigstens eine weitere Scheinwerferuntereinheit 30 aufweist, deren Aufbau gleich ist wie der der Scheinwerferunterheit der rechten Scheinwerfereinheit 10. Die Scheinwerferuntereinheit 30 der linkenDriving direction left headlight unit 11 also has at least one further headlight sub-unit 30, the structure of which is the same as that of the headlight unit of the right headlight unit 10. The headlight sub-unit 30 of the left

Scheinwerfereinheit 11 ist spiegelbildlich zu der der rechten Scheinwerfereinheit 10 angeordnet, so daß sie möglichst nahe am linken äußeren Fahrzeugrand 15 angeordnet ist. Durch die Scheinwerferuntereinheit 30 der linken Scheinwerfereinheit 11 wird ein einseitig nach links gestreutes Lichtbündel ausgesandt, das den Meßschirm 80 im Bereich 90 beleuchtet. Der Bereich 90 ist zumindest annähernd spiegelbildlich zum Bereich 88 und zumindest im wesentlichen links der vertikalen Mittelebene W. Die beiden Bereich 88 und 90 können sich in einer Zone um die vertikale Mittelebene W teilweise überlagern. Durch das von der Scheinwerferuntereinheit 30 der linken Scheinwerfereinheit 11 ausgesandte Lichtbündel wird somit vor allem der linke Fahrbahnrand sowie Bereiche über diesen hinaus beleuchtet, was insbesondere bei Fahrt durch eine Linkskurve vorteilhaft ist, da dabei der Verlauf der Fahrbahn beleuchtet wird. Die Bereiche 88,90 können zum Rand des Meßschirms 80 hin jeweils schräg nach unten verlaufen. Durch wahlweises Zuschalten der Scheinwerferuntereinheit 30 der rechten Scheinwerfereinheit 10 oder der linken Scheinwerfereinheit 11 können dieHeadlight unit 11 is arranged in mirror image to that of the right headlight unit 10 so that it is arranged as close as possible to the left outer vehicle edge 15. Through the headlight subunit 30 of the left headlight unit 11, a light beam which is scattered on one side to the left and which illuminates the measuring screen 80 in the area 90 is emitted. The area 90 is at least approximately a mirror image of the area 88 and at least substantially to the left of the vertical central plane W. The two areas 88 and 90 can partially overlap in a zone around the vertical central plane W. The light beam emitted by the headlight subunit 30 of the left headlight unit 11 thus illuminates above all the left edge of the road and areas beyond it, which is particularly advantageous when driving through a left-hand bend, since it illuminates the course of the road. The areas 88, 90 can each run obliquely downwards towards the edge of the measuring screen 80. By optionally switching on the headlight subunit 30 of the right headlight unit 10 or the left headlight unit 11, the

Sichtbedingungen für den Fahrzeuglenker bei Befahren einer Rechtskurve bzw. einer Linkskurve verbessert werden. Der Betrieb der Scheinwerferuntereinheiten 30 kann beispielsweise abhängig vom Lenkeinschlag des Fahrzeugs gesteuert werden oder durch eine Steuereinrichtung abhängig - 7 -Visibility conditions for the vehicle driver when driving on a right-hand curve or a left-hand curve are improved. The operation of the headlight subunits 30 can be controlled, for example, depending on the steering angle of the vehicle or depending on a control device - 7 -

vom Verlauf der Fahrbahn vor dem Fahrzeug, der mittels einer Kamera oder über ein Navigationssystem ermittelt werden kann.of the course of the road ahead of the vehicle, which can be determined using a camera or a navigation system.

Bei der Ausführung der Scheinwerfereinheit 10 gemäß Figur 2 erstreckt sich die Blinkleuchte 12 nur über einen Teil der Höhe der Scheinwerfereinheit 10 und dieIn the design of the headlight unit 10 according to FIG. 2, the turn signal lamp 12 extends only over part of the height of the headlight unit 10 and

Scheinwerferuntereinheit 30 ist oberhalb der Blinkleuchte 12 angeordnet. Die Scheinwerferuntereinheit 30 ist somit nächstmöglich zum äußeren Fahrzeugrand 14 hin angeordnet.Headlight subunit 30 is arranged above the turn signal lamp 12. The headlight subunit 30 is thus arranged as close as possible to the outer edge of the vehicle 14.

Bei einer in Figur 3 dargestellten modifizierten Ausführung der Scheinwerfereinheit 10 erstreckt sich die Blinkleuchte 12 über die gesamte Höhe der Scheinwerfereinheit 10 und die Scheinwerferuntereinheit 30 ist an die Blinkleuchte 12 angrenzend angeordnet. Die Scheinwerferuntereinheit 30 kann sich dabei über die gesamte Höhe der Scheinwerfereinheit 10 erstrecken oder nur über einen Teil von deren Höhe.In a modified embodiment of the headlight unit 10 shown in FIG. 3, the flashing light 12 extends over the entire height of the headlight unit 10 and the headlight subunit 30 is arranged adjacent to the flashing light 12. The headlight subunit 30 can extend over the entire height of the headlight unit 10 or only over a part of its height.

Die das den Bereich 82 des Meßschirms 80 beleuchtende Abblendlichtbündel aussendende Scheinwerferuntereinheit 20 ist in einem unteren Bereich der Scheinwerfereinheit 10 angeordnet und erstreckt sich beispielsweise nur über einen Teil der Höhe der Scheinwerfereinheit 10. Bei der Ausführung der Scheinwerfereinheit 10 gemäß Figur 2 ist die Scheinwerferuntereinheit 20 in einem unteren Bereich der Scheinwerfereinheit 10 an die Blinkleuchte 12 und die Scheinwerferuntereinheit 30 angrenzend angeordnet. Zur Fahrzeugmitte hin können neben der Scheinwerferuntereinheit 20 noch eine oder mehrere weitere Scheinwerferuntereinheiten angeordnet sein, durch die Lichtbündel mit unterschiedlicher Charakteristik ausgesandt werden und die beispielsweise zur Erzeugung eines Nebellichts dienen können oder zur Erzeugung des Fernlichts zusammen mit der Scheinwerferuntereinheit 20 betrieben werden können. In einem oberen Bereich der Scheinwerfereinheit 10 ist zusätzlich wenigstens eine weitere Scheinwerferuntereinheit 40 angeordnet, deren Aufbau hinsichtlich der Lichtquelle 42, des Reflektors 44, der Linse 46 sowie der Scheibe 48 entsprechend wie bei der Scheinwerferunterienheit 20 sein kann. Die Scheinwerferuntereinheit 40 braucht keine eigene Lichtquelle aufzuweisen und kann auch über Lichtleiter mit einer entfernt angeordneten Lichtquelle verbunden sein. Die Scheinwerferuntereinheit 40 kann beispielsweise oberhalb der Scheinwerferuntereinheit 20 angeordnet sein. Neben der Scheinwerferuntereinheit 40 können zur Fahrzeugmitte hin noch eine oder mehrere weitere Scheinwerferuntereinheiten angeordnet sein, durch die Lichtbündel mit unterschiedlicher Charakteristik ausgesandt werden und die beispielsweise zusammen mit der Scheinwerferuntereinheit 20 und/oder 40 zur Erzeugung des Fernlichts betrieben werden können.The headlight subunit 20 emitting the low beam bundle illuminating the area 82 of the measuring screen 80 is arranged in a lower area of the headlamp unit 10 and extends, for example, only over part of the height of the headlamp unit 10. In the design of the headlamp unit 10 according to FIG. 2, the headlamp subunit 20 is in a lower area of the headlight unit 10 adjacent to the turn signal lamp 12 and the headlight sub-unit 30. Towards the center of the vehicle, in addition to the headlight subunit 20, one or more further headlight subunits can be arranged, through which light beams with different characteristics are emitted and which can be used, for example, to generate fog light or can be operated together with the headlight subunit 20 to generate the high beam. In an upper area of the headlight unit 10 there is additionally at least one arranged further headlight sub-unit 40, the construction of which can be corresponding to the light source 42, the reflector 44, the lens 46 and the pane 48 as in the headlight unit 20. The headlight subunit 40 does not need to have its own light source and can also be connected to a remotely located light source via light guides. The headlight subunit 40 can be arranged above the headlight subunit 20, for example. In addition to the headlight subunit 40, one or more further headlight subunits can be arranged toward the center of the vehicle, through which light beams with different characteristics are emitted and which can be operated, for example, together with the headlight subunit 20 and / or 40 to generate the high beam.

Durch die Scheinwerferuntereinheit 40 wird bei deren Betrieb ein konzentriertes Lichtbündel ausgesandt, das den Meßschirm 80 gemäß Figur 5 in einem Bereich 92 beleuchtet. Durch das von der Scheinwerferuntereinheit 20 ausgesandteWhen the headlight subunit 40 is in operation, a concentrated light bundle is emitted, which illuminates the measuring screen 80 according to FIG. 5 in an area 92. By the emitted by the headlight sub-unit 20

Abblendlichtbündel wird der Meßschirm 80 wie bereits vorstehend erläutert im Bereich 82 beleuchtet. Der Bereich 92 ist dem Bereich 82 überlagert und erstreckt sich beiderseits der vertikalen Mittelebene W des Meßschirms 80. Der Bereich 92 kann über die Helldunkelgrenze 84,86 desLow beam, the measuring screen 80 is illuminated in the area 82 as already explained above. The area 92 is superimposed on the area 82 and extends on both sides of the vertical center plane W of the measuring screen 80. The area 92 can be over the light-dark boundary 84, 86 of the

Bereichs 82 hinausreichen. Durch die höhere Anordnung der Scheinwerferuntereinheit 40 gegenüber der das Basis - Abblendlichtbündel aussendenden Scheinwerferuntereinheit 20 weist das von der Scheinwerferuntereinheit 40 ausgesandte Lichtbündel bei gleicher Neigung wie das von derExtend area 82. Due to the higher arrangement of the headlight subunit 40 compared to the headlight subunit 20 emitting the basic low beam, the light bundle emitted by the headlight subunit 40 has the same inclination as that of the

Scheinwerferuntereinheit 20 ausgesandte Lichtbündel eine größere Reichweite auf ohne eine Blendung des Gegenverkehrs zu verursachen. Somit kann sich der Bereich 92 bis über die Helldunkelgrenze 84,86 des Bereichs 82 hinaus erstrecken und eine verstärkte Beleuchtung des Fernbereichs vor dem Fahrzeug bewirken. Durch das von derHeadlight subunit 20 emitted light bundles on a larger range without causing dazzling oncoming traffic. Thus, the area 92 can extend beyond the light-dark boundary 84, 86 of the area 82 and an intensified illumination of the far area in front of the Effect vehicle. By the of the

Scheinwerferuntereinheit 40 ausgesandte Lichtbündel wird somit der Fernbereich vor dem Fahrzeug bei Abblendlicht zusätzlich beleuchtet. Durch die gegenüber der Scheinwerferuntereinheit 20 höhere Anordnung derHeadlight subunit 40 emitted light bundle is thus additionally illuminated in the far range in front of the vehicle with low beam. Due to the higher arrangement of the headlight subunit 20

Scheinwerferuntereinheit 40 weist das von dieser ausgesandte Lichtbündel eine größere geometrische Reichweite auf als das von der Scheinwerferuntereinheit 20 ausgesandte Lichtbündel und ist damit besonders zur Beleuchtung des Fernbereichs vor dem Fahrzeug geeignet. Dies ist insbesondere bei hoher Geschwindigkeit des Fahrzeugs vorteilhaft, da die Sichtbedingungen für den Fahrzeuglenker im Fernbereich verbessert werden. Der Betrieb der Scheinwerferuntereinheit 40 kann vom Fahrzeuglenker manuell gesteuert werden oder automatisch durch eine Steuereinrichtung abhängig von der Geschwindigkeit des Fahrzeugs.Headlight subunit 40 has the light beam emitted by it a greater geometric range than the light beam emitted by headlight subunit 20 and is therefore particularly suitable for illuminating the far area in front of the vehicle. This is particularly advantageous when the vehicle is traveling at high speed, since the visibility conditions for the vehicle driver in the long range are improved. The operation of the headlamp subunit 40 can be controlled manually by the vehicle operator or automatically by a control device depending on the speed of the vehicle.

Die linke Scheinwerfereinheit 11 weist analog zu der in Figur 2 dargestellten rechten Scheinwerfereinheit 10 spiegelverkehrt angeordnet ebenfalls zusätzlich wenigstens eine weitere Scheinwerferuntereinheit 40 auf. Bei der modifizierten Ausführung der Scheinwerfereinheit 10 gemäß Figur 3 ist ebenfalls zusätzlich die wenigstens eine weitere Scheinwerferuntereinheit 40 vorgesehen, die im oberen Bereich der Scheinwerfereinheit 10 angeordnet ist. DieAnalogously to the right headlight unit 10 shown in FIG. 2, the left headlight unit 11 also has at least one further headlight subunit 40 arranged mirror-inverted. In the modified embodiment of the headlight unit 10 according to FIG. 3, the at least one further headlight subunit 40 is also additionally provided, which is arranged in the upper region of the headlight unit 10. The

Scheinwerferuntereinheit 40 erstreckt sich dabei über die Breite der Scheinwerfereinheit 10 von deren zur Fahrzeugmitte weisendem innerem Rand bis an die Scheinwerferuntereinheit 30 angrenzend. Bei der linken Scheinwerfereinheit 11 ist die Anordnung derHeadlamp subunit 40 extends across the width of the headlamp unit 10 from its inner edge facing the center of the vehicle to the headlamp subunit 30. In the left headlight unit 11, the arrangement of the

Scheinwerferuntereinheit 40 wiederum spiegelbildlich zu der bei der in Figur 3 dargestellten rechten Scheinwerfereinheit 10. - 10 -Headlight subunit 40 in turn is a mirror image of the right headlight unit 10 shown in FIG. 3. - 10 -

Die vorstehend erläuterten Ausführungen der Scheinwerfereinheiten 10,11 bieten den Vorteil, daß die Scheinwerferuntereinheiten 30 und/oder 40 jeweils derart in den Scheinwerfereinheiten 10,11 angeordnet sind, daß die von diesen ausgesandten Lichtbündel mit deren besonderer Charakteristik optimal zur Verbesserung der Beleuchtung der Fahrbahn vor dem Fahrzeug beitragen können. The embodiments of the headlight units 10, 11 explained above offer the advantage that the headlight subunits 30 and / or 40 are each arranged in the headlight units 10, 11 in such a way that the light beams emitted by them with their special characteristics are optimal for improving the lighting of the roadway can contribute to the vehicle.

Claims

- 11 -Ansprüche - 11 claims 1. Scheinwerferanlage für Fahrzeuge zur Aussendung veränderlicher Lichtbündel mitt wenigstens einer Scheinwerfereinheit (10,11), die mehrere Scheinwerferuntereinheiten (20,30,40) aufweist, durch die Lichtbündel mit unterschiedlicher Charakteristik ausgesandt werden, wobei wenigstens eine Scheinwerferuntereinheit (20) vorgesehen ist, durch die ein Basis-Abblendlichtbündel ausgesandt wird und wobei wenigstens eine weitere Scheinwerferuntereinheit (30) vorgesehen ist, durch die ein einseitig gestreutes Lichtbündel ausgesandt wird, dadurch gekennzeichnet, daß die wenigstens eine weitere Scheinwerferuntereinheit (30) nahe dem äußeren Fahrzeugrand (14,15) angeordnet ist, zu dem hin das von dieser ausgesandte Lichtbündel einseitig gestreut ist.1. headlight system for vehicles for emitting variable light bundles by means of at least one headlight unit (10, 11) which has a plurality of headlight subunits (20, 30, 40) through which light bundles with different characteristics are emitted, at least one headlight subunit (20) being provided, through which a basic low beam is emitted and at least one further headlight subunit (30) is provided, through which a light beam scattered on one side is emitted, characterized in that the at least one further headlamp subunit (30) near the outer edge of the vehicle (14, 15) is arranged, towards which the light beam emitted by this is scattered on one side. 2. Scheinwerferanlage nach Anspruch 1, dadurch gekennzeichnet, daß die wenigstens eine weitere Scheinwerferuntereinheit (30) , durch die ein einseitig gestreutes Lichtbündel ausgesandt wird, näher am äußeren Fahrzeugrand (14,15) angeordnet ist als die wenigstens eine Scheinwerferuntereinheit (20) , durch die das Basis- Abblendlichtbündel ausgesandt wird.2. Headlight system according to claim 1, characterized in that the at least one further headlight sub-unit (30), through which a light beam scattered on one side is emitted, is arranged closer to the outer edge of the vehicle (14, 15) than the at least one headlight sub-unit (20) the basic low beam is emitted. 3. Scheinwerferanlage nach Anspruch 1 oder 2 , dadurch gekennzeichnet, daß die wenigstens eine weitere - 12 -3. Headlight system according to claim 1 or 2, characterized in that the at least one more - 12 - Scheinwerferuntereinheit (30) , durch die ein einseitig gestreutes Lichtbündel ausgesandt wird, die dem äußeren Fahrzeugrand (14,15) am nächsten angeordnete Scheinwerferuntereinheit der wenigstens einen Scheinwerfereinheit (10,11) ist.Headlight subunit (30), through which a light beam scattered on one side is emitted, which is the headlamp subunit of the at least one headlamp unit (10,11) arranged closest to the outer edge of the vehicle (14, 15). 4. Scheinwerferanlage nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die wenigstens eine Scheinwerfereinheit (10,11) wenigstens eine weitere zusätzliche Scheinwerferuntereinheit (40) aufweist, durch die ein konzentriertes Lichtbündel ausgesandt wird, das die durch das Basis-Abblendlichtbündel bewirkte Beleuchtung des Fernbereichs vor dem Fahrzeug verstärkt wird, und daß die wenigstens eine weitere zusätzliche Scheinwerferuntereinheit (40) höher in der wenigstens einen Scheinwerfereinheit (10,11) angeordnet ist als die wenigstens eine Scheinwerferuntereinheit (20) , durch die das Basis- Abblendlichtbündel ausgesandt wird.4. Headlight system according to one of claims 1 to 3, characterized in that the at least one headlight unit (10, 11) has at least one further additional headlight sub-unit (40), through which a concentrated light beam is emitted, which caused by the basic low beam Illumination of the far range in front of the vehicle is increased, and that the at least one further additional headlight sub-unit (40) is arranged higher in the at least one headlight unit (10, 11) than the at least one headlight sub-unit (20) through which the basic low beam is emitted . 5. Scheinwerferanlage nach Anspruch 4, dadurch gekennzeichnet, daß durch das von der wenigstens einen weiteren zusätzlichen Scheinwerferuntereinheit (40) ausgesandte Lichtbündel der Fernbereich vor dem Fahrzeug oberhalb der Helldunkelgrenze (84,86) des von der wenigstens einen Scheinwerferuntereinheit (20) ausgesandten Basis- Abblendlichtbündels beleuchtet wird. 5. Headlight system according to claim 4, characterized in that by the light beam emitted by the at least one further additional headlight subunit (40), the far range in front of the vehicle above the light-dark boundary (84, 86) of the base emitted by the at least one headlamp subunit (20) Low beam is illuminated.
PCT/DE1998/003522 1998-03-25 1998-12-01 Automobile headlight system for emission of modifiable beams of light Ceased WO1999048721A1 (en)

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