EP0999408A2 - Projecteur de véhicule automobile adaptatif comportant un diaphragme réglable - Google Patents

Projecteur de véhicule automobile adaptatif comportant un diaphragme réglable Download PDF

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Publication number
EP0999408A2
EP0999408A2 EP99122137A EP99122137A EP0999408A2 EP 0999408 A2 EP0999408 A2 EP 0999408A2 EP 99122137 A EP99122137 A EP 99122137A EP 99122137 A EP99122137 A EP 99122137A EP 0999408 A2 EP0999408 A2 EP 0999408A2
Authority
EP
European Patent Office
Prior art keywords
headlamp
motor
diaphragm
sensor
lamp
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.)
Withdrawn
Application number
EP99122137A
Other languages
German (de)
English (en)
Other versions
EP0999408A3 (fr
Inventor
Piero Perlo
Vito Lambertini
Claudia Bigliati
Alessandro Negri
Sabino Sinesi
Bartolomeo Pairetti
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.)
Marelli Automotive Lighting Italy SpA
Original Assignee
Automotive Lighting Italia SpA
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 Automotive Lighting Italia SpA filed Critical Automotive Lighting Italia SpA
Publication of EP0999408A2 publication Critical patent/EP0999408A2/fr
Publication of EP0999408A3 publication Critical patent/EP0999408A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V11/00—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00
    • F21V11/16—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed
    • F21V11/18—Screens not covered by groups F21V1/00, F21V3/00, F21V7/00 or F21V9/00 using sheets without apertures, e.g. fixed movable, e.g. flaps, slides
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens

Definitions

  • the present invention relates to a lighting device for motor-vehicles, of the type comprising a first and a second headlamp arranged side-by-side, each comprising a light source constituted by an incandescence lamp and a reflector associated with said lamp.
  • the invention relates to a lighting device of adaptive type, i.e. adapted to generate a light beam at the output whose pattern can be varied depending upon the travel condition of the motor-vehicle (steering angle, speed, etc.) and the ambient and light conditions, as well as the type of road on which the vehicle travels.
  • a lighting device of adaptive type i.e. adapted to generate a light beam at the output whose pattern can be varied depending upon the travel condition of the motor-vehicle (steering angle, speed, etc.) and the ambient and light conditions, as well as the type of road on which the vehicle travels.
  • the object of the present invention is that of providing an adaptive lighting device which on one hand is able to provide on optimized pattern in any condition of use and on the other hand has a structure which is relatively simple, of very reduced dimensions and of relatively low cost.
  • the invention provides an adaptive lighting device for motor-vehicles, comprising a first and a second headlamps arranged side-by-side, each including a light source constituted by an incadescence lamp and a reflector associated with said lamp, characterised in that said first headlamp is provided to originate a light beam at the output of the device having a predetermined basic pattern, and in that said second headlamp comprises diaphragm means arranged in front of the light source and the reflector of said second headlamp to interecept the emitted light beam and able to define at least one window for passage of the beam having variable positions and dimensions, so that said second headlamp is able to originate a plurality of additional light beams, which can be selected by adjustment of said diaphragm means, so as to generate a different total pattern for each condition of use.
  • the first headlamp has the task to originate a basic light beam, having a predetermined pattern
  • the second headlamp which is provided with an adjustable diaphragm, has the task to generate additional light beams, which are added to the basic light beam of the first headlamp in other to obtain the required total beam.
  • motor means are preferably provided for adjustment of the diaphragm means and electronic control means are also provided for controlling said motor means, said control means receiving signals from sensor means for sensing the travel and the ambient conditions and controlling the motor means depending upon said signals.
  • the above mentioned sensor means may comprise a sensor of the steering angle of the motor-vehicle, a speed sensor, a light sensor, a GPS receiver, or also a videocamera located on board the vehicle having the function of monitoring both the ambient conditions and the type of road on which the motor-vehicle travels.
  • the device according to the invention is able to automatically adapt the characteristics of the beam going out of the device to the conditions of use.
  • Figure 1 is a front diagrammatic view of a lighting device 1 for motor-vehicles, comprising a supporting structure 2 on which two headlamps 3, 4 are mounted which are arranged side-by-side.
  • the first headlamp 3 is of a conventional type, with a light source constituted by an incadescence lamp 5, such as of the H7 type and a reflector 6 located at the rear of lamp 5, with reference to the output direction of the light beam from the device, having known characteristics.
  • a light source constituted by an incadescence lamp 5, such as of the H7 type and a reflector 6 located at the rear of lamp 5, with reference to the output direction of the light beam from the device, having known characteristics.
  • the headlamp 3 is completed by a transparent element 7 located at the front and spaced apart from the lamp 5.
  • the second headlamp 4 also has a light source 8 (see also figure 2) constituted by an incandescence lamp such as of the H7 type and a reflector element 9 located at the rear of lamp 8.
  • a light source 8 (see also figure 2) constituted by an incandescence lamp such as of the H7 type and a reflector element 9 located at the rear of lamp 8.
  • lamp 8 constituted by an incandescence lamp such as of the H7 type
  • reflector element 9 located at the rear of lamp 8.
  • the details of construction relating to lamp 8, reflector 9 and the way by which the lamp 8 is mounted on reflector 9 are not shown, since they can be made in any known way and since their deletion from the drawings renders the latter simpler and easier to undestand.
  • the supporting structure of the device has not been illustrated.
  • a diaphragm 11 is located in front of the light source 8 and reflector 9 adapted to intercept the light beam emitted by reflector 9.
  • the diaphragm 11 is adapted to define one or more windows 12 for passage of the light beam.
  • the shape and position of the window is determined by the operative condition of a plurality of curtain-like shutters 13, 14, 15 with which the diaphragm 11 is provided.
  • Shutter 13 is movable between a completely closed condition in which is completely occupies an upper rectangular area of the diaphragm, and a completely opened condition, in which this area is completely free.
  • the two shutters 14 are movable between a totally closed operative condition, in which they totally cover to two rectangular vertical areas which are parellel to and spaced apart from each other, and a completely opened condition, in which these areas are free.
  • the shutters 15 is movable between a completely closed condition, in which it totally covers the horizontally oriented rectangular area indicated in figure 3, and a completely closed condition, in which this area is completely free.
  • the first headlamp 3 is for generating a basic light beam, having a predetermined pattern
  • the second headlamp 4 is able to selectively generate a plurality of different additional beams, which are added to the basic beam generated by the headlamp 3 to originate a total beam having variable characteristics, depending upon the conditions of use.
  • the selection of additional light beams is obtained by adjusting the various curtain-like shuttersof the diaphragm 11.
  • Figure 5 of the annexed drawings shows the pattern which can be obtained by the device according to the invention in a plane orthogonal to the optical axis of each of the head lamps 3, 4 and located at a 25 meters distance from the device.
  • axes H and V respectively designate the horizontal direction and the vertical direction, whereas the various lines indicate the profiles of the area illuminated by the device in the different conditions of use.
  • the basic beam generated by the head lamp 3 is that which originates the pattern indicated by line B, which is of the so called "low beam” or "cross beam” type, having characteristics defined by the laws or more specifically by car manufactures.
  • the basic pattern B is added with two distinct areas C, as shown in figure 5, by a suitable adjustment of the headlamp 4.
  • the two areas D When driving out of town, the two areas D are activated, whereas for driving on a high-way the pattern E is generated. If desidered, an over-head lighting pattern F can be further originated, for use for example when reading over-head road signals.
  • Area G is instead activeted when an upper beam is desidered.
  • Areas L and R are activated for lighting when driving in a curve to the left or the right, respectively, whereas the sum of these two areas L and R is activated when an anti-fog lighting is required.
  • FIG. 4 is a block diagram which diagrammatically shows diaphragm 11 and the motor means 16 which are for driving the diaphragm.
  • These motor means 16 are controlled by an electronic control unit 17 on the basis of signals 18 which are sent thereto by sensors of various type, such as a sensor of the steering angle of the motor-vehicle, a speed sensor, a GPS receiver, and sensors of the ambient and light conditions.
  • sensors of various type such as a sensor of the steering angle of the motor-vehicle, a speed sensor, a GPS receiver, and sensors of the ambient and light conditions.
  • a videocamera can be used which is located on-board the motor-vehicle and adapted to detect both the ambient conditions and the conditions of the road on which the motor-vehicle travels.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP99122137A 1998-11-05 1999-11-05 Projecteur de véhicule automobile adaptatif comportant un diaphragme réglable Withdrawn EP0999408A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT1998TO000934A IT1305162B1 (it) 1998-11-05 1998-11-05 Dispositivo di illuminazione adattativo, a doppio proiettore, perautoveicoli, con diaframma variabile.
ITTO980934 1998-11-05

Publications (2)

Publication Number Publication Date
EP0999408A2 true EP0999408A2 (fr) 2000-05-10
EP0999408A3 EP0999408A3 (fr) 2001-09-05

Family

ID=11417160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99122137A Withdrawn EP0999408A3 (fr) 1998-11-05 1999-11-05 Projecteur de véhicule automobile adaptatif comportant un diaphragme réglable

Country Status (2)

Country Link
EP (1) EP0999408A3 (fr)
IT (1) IT1305162B1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828850A1 (fr) * 2001-08-24 2003-02-28 Valeo Vision Dispositif d'eclairage realisant un faisceau d'eclairage pour la circulation par temps pluvieux
FR2963662A1 (fr) * 2010-08-06 2012-02-10 Valeo Vision Unite optique pour dispositif de signalisation et/ou d'eclairage
DE102004034838B4 (de) * 2004-07-19 2015-07-23 Daimler Ag Fahrzeugscheinwerfersystem mit variabler Strahlform
DE102007045150B4 (de) * 2006-09-27 2021-03-04 HELLA GmbH & Co. KGaA Scheinwerferanordnung für ein Fahrzeug und Verfahren zum Steuern einer Scheinwerferanordnung
CN115199988A (zh) * 2022-09-16 2022-10-18 常州通宝光电股份有限公司 一种基于红外探测技术的车灯组件及照明装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4458303A (en) * 1982-05-24 1984-07-03 Berns Michael S Light beam concentrating, intensifying and filtering device
US4890208A (en) * 1986-09-19 1989-12-26 Lehigh University Stage lighting apparatus
JP2579256Y2 (ja) * 1992-04-30 1998-08-20 株式会社小糸製作所 光束パターン可変型４灯式前照灯
DE19642467B4 (de) * 1996-10-15 2010-04-08 Automotive Lighting Reutlingen Gmbh Scheinwerferanlage für Fahrzeuge zur Aussendung eines veränderlichen Lichtbündels

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2828850A1 (fr) * 2001-08-24 2003-02-28 Valeo Vision Dispositif d'eclairage realisant un faisceau d'eclairage pour la circulation par temps pluvieux
EP1288563A1 (fr) * 2001-08-24 2003-03-05 Valeo Vision Dispositif d'éclairage réalisant un faisceau d'éclairage pour la circulation par temps pluvieux
DE102004034838B4 (de) * 2004-07-19 2015-07-23 Daimler Ag Fahrzeugscheinwerfersystem mit variabler Strahlform
DE102007045150B4 (de) * 2006-09-27 2021-03-04 HELLA GmbH & Co. KGaA Scheinwerferanordnung für ein Fahrzeug und Verfahren zum Steuern einer Scheinwerferanordnung
FR2963662A1 (fr) * 2010-08-06 2012-02-10 Valeo Vision Unite optique pour dispositif de signalisation et/ou d'eclairage
EP2415638A3 (fr) * 2010-08-06 2012-12-26 Valeo Vision Unité optique pour dispositif de signalisation et/ou d'éclairage
CN115199988A (zh) * 2022-09-16 2022-10-18 常州通宝光电股份有限公司 一种基于红外探测技术的车灯组件及照明装置

Also Published As

Publication number Publication date
EP0999408A3 (fr) 2001-09-05
ITTO980934A1 (it) 2000-05-05
IT1305162B1 (it) 2001-04-10

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