EP0624753B1 - Projecteur pour véhicules - Google Patents

Projecteur pour véhicules Download PDF

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Publication number
EP0624753B1
EP0624753B1 EP94105663A EP94105663A EP0624753B1 EP 0624753 B1 EP0624753 B1 EP 0624753B1 EP 94105663 A EP94105663 A EP 94105663A EP 94105663 A EP94105663 A EP 94105663A EP 0624753 B1 EP0624753 B1 EP 0624753B1
Authority
EP
European Patent Office
Prior art keywords
lens
light
reflector
reflection element
headlight
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
EP94105663A
Other languages
German (de)
English (en)
Other versions
EP0624753A3 (fr
EP0624753A2 (fr
Inventor
Freider Dipl.-Ing. Alber
Martin Dipl.-Ing. Lampen (Fh)
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 EP0624753A2 publication Critical patent/EP0624753A2/fr
Publication of EP0624753A3 publication Critical patent/EP0624753A3/fr
Application granted granted Critical
Publication of EP0624753B1 publication Critical patent/EP0624753B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • 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
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/17—Arrangement or contour of the emitted light for regions other than high beam or low beam
    • F21W2102/18—Arrangement or contour of the emitted light for regions other than high beam or low beam for overhead signs

Definitions

  • the invention relates to a headlight for vehicles according to the Genus of claim 1.
  • Such a headlight is known from DE 33 40 796 A1.
  • This headlight has a reflector in which a light source is inserted.
  • a lens is arranged away and in the beam path between the A reflector and the lens is arranged, which is a Has aperture edge, which is imaged by the lens. That from Headlights emitted by the headlights illuminate the front of the vehicle lying area and is up through one of the bezel edge formed light-dark limit limited.
  • the Corposcuro limit is it is sharply defined and above this the area in front of the Vehicle only very dimly illuminated, so that glare oncoming Vehicle drivers are safely avoided.
  • the headlight according to the invention with the features of claim 1 has the advantage that the at least one reflection element the lighting of the area in front of the vehicle above the Patoscuro limit is improved.
  • the illuminance and the illuminance distribution through the Size and shape of the reflection element can be influenced in a targeted manner.
  • FIG. 1 shows a headlight in a longitudinal section with a in front of this arranged measuring screen and Figure 2 with the measuring screen an illuminance distribution generated by the headlight on this.
  • a headlight for vehicles, especially motor vehicles, is used as a low beam headlight and has a reflector 10, in whose apex area a light source 12 is used, the one Incandescent lamp or a gas discharge lamp can be.
  • the one Incandescent lamp or a gas discharge lamp can be.
  • a lens 16 is arranged away from light rays from the reflector 10 and in the beam path between the reflector 10 and the lens 16 an aperture 18 is arranged.
  • the aperture 18 extends below the optical axis 20 of the reflector 10 and has one Upper edge 22, which is arranged approximately at the height of the optical axis 20 is.
  • the reflector 10 is ellipsoid formed and includes in the axial, that is, the optical axis 20th containing longitudinal cuts different ellipses. These ellipses all have a common inner focus F1 in its Area the light source 12 is arranged.
  • vertical axial longitudinal section results in an ellipse, whose outer focus F2v is in the area of the aperture 18.
  • the outer one Focal point F2h lies in the area of lens 16.
  • the lens 16 has a flat surface 24 facing the reflector 10 and facing away from it a convexly curved surface 26.
  • the convex curved surface 26 can be spherical or aspherical depending on the imaging properties for the lens 16 are necessary.
  • the lens 16 forms the upper edge 22 of the Aperture 18, which has a light-dark boundary in the headlight generated on a vertically arranged in front of this measuring screen 28 Illuminance distribution forms.
  • the shape of the top edge 22 of the Aperture 18 thus determines the course of the Varoscuro limit of the illuminance distribution, however, it should be borne in mind that the diaphragm edge 22 is reversed in height and sides by the lens 16 becomes.
  • FIG 2 is the measuring screen arranged vertically in front of the headlight 28 with that from the headlight on this with high illuminance Illuminated hatched area 30 shown.
  • the Measuring screen 28 represents one lying in front of the vehicle Area with a lane and is used to check the headlights generated illuminance distribution under standard conditions.
  • a horizontal center plane HH and vertical center plane VV is drawn, which intersect at point HV, through which also a horizontal connecting line between the headlight and the measuring screen 28 passes through.
  • the area 30 is limited by the Patoscuro limit on the oncoming traffic side, So with the headlamp designed for right-hand traffic of the embodiment of the left side in Figure 2, a horizontal section 32, and one on the own traffic side has section 34 rising towards the edge.
  • the horizontal one Section 32 is approximately 1 percent below the horizontal median HH of the measuring screen 28 arranged, this angle refers to the headlight as the fulcrum.
  • the course of the Cadoscuro boundary is generally based on legal regulations, the light-dark boundary explained above with the horizontal Section 32 and the inclined section 34 existing in Europe legal regulations are sufficient.
  • At least one reflection element 38 is arranged according to the invention, through which is reflected by the reflector 10 and strikes this Light reflected upward with respect to the optical axis 20 is so that after passing through the lens 16 Measuring screen 28 illuminated above the Corposcuro limit 32.34 or 32.36.
  • the vertical extension of the reflection element 38 is small compared to the aperture 18, so that of a region of the region lying further above the optical axis 20 Reflector 10 reflected and with respect to the optical axis 20th downward inclined light rays 42 through the reflection element 38 are not influenced.
  • the reflection element 38 can as shown in Figure 1 on the panel 18, for example by means of rivets or, as shown in broken lines in FIG. 1, on a support 44 holding the lens 16.
  • the reflection element 38 can also be made in one piece with the panel 18 or the carrier 44 be carried out.
  • the size of the reflection element 38 depends then, with what illuminance the measuring screen 28 above the The light-dark boundary is to be illuminated. It is also possible instead of a relatively large reflection element 38 several smaller ones Provide reflection elements.
  • the reflective surface of the reflective element 38 can also be convex or concave run curved and generally depends on the achieving illuminance distribution in the area above the Light-dark boundary. In addition, 38 can light through the reflection element scattered horizontally.
  • the reflection element 38 is designed so that from this reflected light legal regulations about required Minimum illuminance values and maximum permissible illuminance values observed above the Cadoscuro limit will.
  • the ECE control 20 there is, for example, a measuring point B50L included, in which the illuminance is a maximum of 0.4 lux may.
  • the illuminance distribution freely chosen above the Corposcuro limit will.
  • the illuminance distribution can, for example be chosen so that a directly above the light-dark limit lying area 46 of the measuring screen 28, which extends to approximately 2 degrees above the horizontal central plane HH and below about 4 degrees extends on both sides of the vertical center plane VV of the measuring screen 28, only weakly due to the light reflected by the reflection element 38 is illuminated. This makes glare more accommodating Vehicle drivers avoided or at least kept low. A yourself upwards and laterally adjoining area 46 and vertically up to about 4 degrees to the horizontal central plane HH and itself on both sides up to about 8 degrees of the vertical center plane VV of the measuring screen 28 extending area 48 is through that of the reflection element 38 reflected light illuminates more than the area 46.
  • the illuminance distribution in areas 46 and 48 is directed doing so according to legal regulations.
  • By illuminating the Areas 46 and 48 can be the traffic situation located there by the driver are perceived, i.e. objects located there such as high traffic signs or other road users can be recognized.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (4)

  1. Projecteur de véhicules comprenant une source lumineuse (12), un réflecteur (10), une lentille (16) éloignée du réflecteur (10) dans la direction de sortie de lumière (14) ainsi qu'un diaphragme (18) placé dans le chemin des rayons lumineux entre le réflecteur (10) et la lentille (16), et dont la lentille (16) forme en image la limite d'éclairement (32, 34 ; 32, 36) du faisceau lumineux émis par le projecteur,
    caractérisé en ce que
    dans le chemin des faisceaux entre le diaphragme (18) et la lentille (16), il est prévu au moins un élément réfléchissant (38) qui dévie une partie de la lumière réfléchie par le réflecteur (10) pour qu'après le passage à travers la lentille (16), une zone en avant du véhicule au-dessus de la limite d'éclairement (32, 34 ; 32, 36) soit éclairée et, qu'au moins un élément réfléchissant (38) proche de l'axe optique (20) du réflecteur (10) se trouve en dessous de celui-ci.
  2. Projecteur selon la revendication 1,
    caractérisé en ce que
    l'élément de réflexion (38) s'étend dans la direction verticale d'une dimension beaucoup plus faible que celle du diaphragme (18).
  3. Projecteur selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    l'élément réfléchissant (38) est porté par le diaphragme (18).
  4. Projecteur selon l'une des revendications 1 ou 2,
    caractérisé en ce que
    la lentille (16) est portée par un support (44) et l'élément réfléchissant (38) est porté par le support (44).
EP94105663A 1993-05-08 1994-04-13 Projecteur pour véhicules Expired - Lifetime EP0624753B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4315401 1993-05-08
DE4315401A DE4315401A1 (de) 1993-05-08 1993-05-08 Scheinwerfer für Fahrzeuge

Publications (3)

Publication Number Publication Date
EP0624753A2 EP0624753A2 (fr) 1994-11-17
EP0624753A3 EP0624753A3 (fr) 1995-03-01
EP0624753B1 true EP0624753B1 (fr) 1998-03-25

Family

ID=6487605

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94105663A Expired - Lifetime EP0624753B1 (fr) 1993-05-08 1994-04-13 Projecteur pour véhicules

Country Status (2)

Country Link
EP (1) EP0624753B1 (fr)
DE (2) DE4315401A1 (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2769688B1 (fr) * 1997-10-14 2000-03-10 Valeo Vision Projecteur elliptique a coupure attenuee
FR2770617B1 (fr) * 1997-10-30 2000-02-04 Valeo Vision Projecteur elliptique pour vehicule automobile dont le faisceau lumineux presente une coupure attenuee
FR2788585B1 (fr) * 1999-01-18 2001-04-27 Valeo Vision Projecteur du type elliptique, notamment pour vehicule automobile
JP3798583B2 (ja) 1999-07-19 2006-07-19 株式会社小糸製作所 車両用前照灯
DE10004699B4 (de) * 2000-02-03 2014-05-28 Automotive Lighting Reutlingen Gmbh Fahrzeugscheinwerfer nach dem Projektionsprinzip
FR2825138B1 (fr) * 2001-05-25 2004-01-09 Valeo Vision Projecteur d'eclairage de vehicule automobile
DE10333370A1 (de) * 2003-07-23 2005-02-24 Schott Ag Beleuchtungseinrichtung, Linse und Herstellung der Linse
FR2888916B1 (fr) 2005-07-21 2007-09-28 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
FR2895782B1 (fr) * 2006-01-05 2013-05-17 Valeo Vision Dispositif projecteur elliptique multifonctions avec element optique additionnel
JP4749968B2 (ja) * 2006-07-31 2011-08-17 株式会社小糸製作所 車両用前照灯
DE102009035743A1 (de) 2009-08-01 2011-02-17 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer
DE102013207850A1 (de) 2013-04-29 2014-10-30 Automotive Lighting Reutlingen Gmbh Lichtmodul für einen Kraftfahrzeugscheinwerfer

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6486401A (en) * 1987-09-29 1989-03-31 Koito Mfg Co Ltd Head light of vehicle
DE9000395U1 (de) * 1990-01-16 1991-05-16 Robert Bosch Gmbh, 7000 Stuttgart Scheinwerfer für Kraftfahrzeuge
JP2559908B2 (ja) * 1991-02-08 1996-12-04 株式会社小糸製作所 投射型自動車用ヘッドランプ

Also Published As

Publication number Publication date
EP0624753A3 (fr) 1995-03-01
DE4315401A1 (de) 1994-11-10
EP0624753A2 (fr) 1994-11-17
DE59405501D1 (de) 1998-04-30

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