EP1912018A1 - Phares de projection pour véhicules - Google Patents

Phares de projection pour véhicules Download PDF

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Publication number
EP1912018A1
EP1912018A1 EP07115620A EP07115620A EP1912018A1 EP 1912018 A1 EP1912018 A1 EP 1912018A1 EP 07115620 A EP07115620 A EP 07115620A EP 07115620 A EP07115620 A EP 07115620A EP 1912018 A1 EP1912018 A1 EP 1912018A1
Authority
EP
European Patent Office
Prior art keywords
reflector
projection
diaphragm
light
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP07115620A
Other languages
German (de)
English (en)
Other versions
EP1912018B1 (fr
Inventor
Martin WÜLLER
Christian Dr. Lüder
Franz-Josef Kalze
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.)
Hella GmbH and Co KGaA
Original Assignee
Hella KGaA Huek and Co
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 Hella KGaA Huek and Co filed Critical Hella KGaA Huek and Co
Publication of EP1912018A1 publication Critical patent/EP1912018A1/fr
Application granted granted Critical
Publication of EP1912018B1 publication Critical patent/EP1912018B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F21S41/10—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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a projection headlight for vehicles having a first projection light unit for generating a first light distribution and having a second projection light unit for generating a second light distribution, which have a common lens located in the light exit direction, the first projection light unit having a first reflector device, one of the first reflector device associated a first light source device and a first diaphragm arranged between the first reflector device of the lens and a second reflector device, a second light source device associated with the second reflector device and a second diaphragm arranged between the second reflector device and the lens, the first reflector device and the second reflector means em from the first light source means and the second light source means collected light near a rear focal point of the lens.
  • a projection headlight for vehicles which has a first projection light unit for generating a first light distribution and a second projection light unit for generating a second light distribution.
  • the first projection light unit has a first reflector device and a first light source device;
  • the second projection light unit has a second reflector device and a second light source device.
  • These devices of the first projection light unit and the second projection light unit are optically separated from each other.
  • the first reflector device and the first light source device and the second reflector device and the second light source device cooperate with an upstream diaphragm and a shared lens according to the projection principle so that different light distributions associated with the projection light units can be generated.
  • the first light source device and the second light source device are each arranged in a region close to an optical axis of the lens.
  • the main emission direction of the first light source device and the second light source device is perpendicular to the optical axis in the opposite direction outward in the direction of the respectively associated first reflector means and second reflector means.
  • the first light source device and the second light source device are each arranged on a carrier which runs along the optical axis of the lens.
  • a disadvantage of the known projection headlight is that a plurality of such first projection light units or second projection light units is required to produce a predetermined illuminance for a light function.
  • Object of the present invention is to develop a projection headlamp for vehicles such that the number of projection light units can be reduced to produce a predetermined light function, so that the projection headlight is constructed to save space.
  • the invention in conjunction with the preamble of claim 1, characterized in that the first reflector means extends at least in a region between an extension plane of the first light source means and the optical axis of the lens on the one hand and that the second reflector means at least in one Area between the plane of extension of the second light source means and the optical axis of the lens on the other hand extends.
  • the particular advantage of the invention is that a light source device with more than one light source can be assigned to a projection light unit of the projection headlamp so that the number of projection light units that can be used to generate the predetermined light distributions can be reduced to save space.
  • a first light source device and / or a light source device is arranged at a relatively large distance from an optical axis, an improved dissipation of the resulting during operation of the light source means heat to a rear heat sink can be ensured.
  • the light source carriers may be solid without reducing the optically effective areas of the projection light units. This results in an improved thermal connection of the light source devices, which make it possible in that the light source device can have a plurality of light sources for increasing the illuminance.
  • a center axis of the first reflector device and a center axis of the second reflector device form an opening angle of at least 30 °, preferably 45 °. In this way, a maximum light output is ensured since the light reflected by the respectively associated reflector devices is reflected unimpeded in the direction of the lens.
  • the first reflector device is formed of a first reflector and the second reflector device of a second reflector, each having a longitudinal portion which approach asymptotically in the light exit direction to the optical axis.
  • the longitudinal sections of the reflectors can converge to form a diaphragm tip, which is a component of the first diaphragm of the first projection light unit and a component of a second diaphragm of the second projection light unit.
  • the aperture can be integrated in the reflector.
  • a diaphragm associated with a reflector is designed as an inclined surface, which is designed to increase in the direction of an apex region of the reflector with respect to an optical axis.
  • the inclined surface is connected via a curved boundary line with the reflector.
  • the embodiment according to the invention has an optimization of the light distribution in terms of range, ride comfort and safety. Further, aberrations of the projection lens can be suppressed and a tolerance sensitivity in the production of the headlamp can be reduced. This is effected in particular by the diaphragm edge formed according to the invention.
  • a projection headlamp 1 which consists of a first projection light unit 2 for generating a low beam distribution and a second projection light unit 3 for generating a high beam distribution.
  • the first projection light unit 2 is arranged substantially in relation to a horizontal plane symmetrical to the second projection light unit 3.
  • the first projection light unit 2 has a first light source device 4, a first reflector device 5 and a first diaphragm 6.
  • the second projection light unit 3 has a second light source device 7, a second reflector device 8 and a second diaphragm 9.
  • the first projection light unit 2 and the second projection light unit 3 each operate on the projection principle, with the first reflector device 5 and the second reflector device 8 respectively emitting the light beams 10 emitted by the first light source device 4 and the light beams 11 emitted by the second light source device 7 of a rear focal point F of a lens 12 shared by the first projection light unit 2 and the second projection light unit 3.
  • the lens 12 is arranged in the light exit direction 13 of the projection headlamp 1 in front of the first reflector device 5 and the second reflector device 8 or the first diaphragm 6 and the second diaphragm 9.
  • the first light source device 4 preferably has a plurality of light sources 4 'designed as light emitting diodes (LED), of which only one is shown by way of example in FIG. 1 or FIG. 2.
  • the second light source device 7 preferably has a plurality of light-emitting diodes (LED) designed as light sources 7 '.
  • the light sources 4 'of the first light source device 4 and the light sources 7' of the second light source device 7 are each arranged on a light source carrier, not shown, which is arranged in the transverse direction outside an imaginary parallel to the optical axis 14 extending extension line of the lens 12.
  • a massive heat sink which in particular can dissipate the heat generated by the plurality of first light sources 4 ', can be connected to the light source carrier in the rearward direction of the projection headlight.
  • a distance A between an extension plane G and G 'of the first light source device 4 and the second light source device 7 to the optical axis 14 of the lens 12 is greater than the transverse extent of the first reflector means 5 and / or
  • the transverse extent of the second reflector device 8 is understood as meaning the transverse extent of the first reflector device 5 or the second reflector device 8, the extent of the reflector devices 5 and 8 extending transversely to the optical axis 14 of the lens 12.
  • the first reflector device 5 extends in a region between the plane of extent G of the first light source device 4 and the optical axis 14 of the lens 12.
  • the second reflector device 8 extends between the plane of extent G 'of the second light source device 7 and the optical axis 14 of the lens 12.
  • the first reflector device 5 and the second reflector device 8 are arranged substantially between the first light source device 4 and the second light source device 7.
  • a center axis M of the first reflector device 5 and a center axis M 'of the second reflector device 8 form an opening angle W of at least 10 °, preferably 25 °.
  • the center axes M, M 'of the first reflector device 5 and the second reflector device 8 intersect at the focal point F.
  • the first reflector device 5 has an ellipsoidal first reflector 5 '.
  • the second reflector device 8 has an ellipsoidal second reflector 8 '.
  • the first reflector 5 ' extends substantially mirror-inverted to the second reflector 8' above the optical axis 14, while the second reflector 8 'is arranged below the optical axis 14.
  • the first reflector 5 ' has a longitudinal section 15 which approaches the optical axis 14 in the light exit direction 13.
  • the second reflector 8 ' has a longitudinal section 16 which approaches the optical axis 14 in the light exit direction 13.
  • a front end of the longitudinal section 15 of the first reflector 5 ' forms the first diaphragm 6 of the first projection light unit 2 for generating a cut-off for the low-beam light distribution.
  • a front end of the longitudinal section 16 of the second reflector 8 ' forms the second diaphragm 9 of the second projection light unit 3.
  • the reflectors 5', 8 'thus also form the diaphragms for the projection light units 2, 3.
  • the longitudinal sections 15, 16 to a diaphragm tip 17, which serves to image the cut-off for the low-beam light distribution.
  • the ends of the longitudinal sections 15, 16 of the first reflector 5 'or of the reflector 8' can also be arranged offset to one another in the light exit direction 13.
  • the first reflector 5 'and the second reflector 8' each have a longitudinal portion 18 and 19, which converge at a distance S to the diaphragm tip 17.
  • the first light source device 4 and the second light source device 7 are arranged such that the main emission direction thereof is perpendicular to the optical axis 14 and to the optical axis 14.
  • the light source devices 4 and 7 are arranged opposite to the optical axis 14.
  • the first reflector device 5 and the second reflector device 8 extend in a lily shape in cross-section, wherein the outer surface of the lily shape is provided with a specular reflection surface.
  • the projection headlamp has a first reflector device 100 arranged above the optical axis 14 and associated with two light sources 7 '(light-emitting diodes) for generating a low-beam light distribution.
  • the upper reflector device 100 has two adjacently arranged reflectors 105, 105 ', to each of which a light source 7' is assigned.
  • a second reflector device 101 is arranged, which is associated with a further light source 7 '(light emitting diode) for generating a high beam distribution.
  • the second reflector device 101 has a single reflector 108 to which the light-emitting diode 7 'is assigned.
  • the light emitting diodes 7 ' are - as in the previous embodiments - each on a side facing away from the optical axis 14 of the reflectors 105, 105' and the reflector 108 is arranged.
  • the first reflector device 100 and the second reflector device 101 are integrally connected to one another, wherein a arranged on a mutually facing side first aperture 106 of the first reflectors 105, 105 'with a second aperture 109 of the second reflector 108 converge to a common aperture edge 117.
  • the first reflector device 100 and the second reflector device 101 may also be arranged physically separated from one another.
  • the first diaphragm 106 and the second diaphragm 109 each extend as an inclined surface to form an acute angle with respect to a horizontal plane E, in which the optical axis 14 extends.
  • the distance B of the first diaphragm 106 to the second diaphragm 109 increases in the direction of the vertex region of the reflector devices 100, 101, as can be seen from FIG.
  • the first diaphragm 106 and the second diaphragm 109 pass over a curved boundary line 120 or 121 into the first reflector 105, 105 'and the second reflector 108, respectively.
  • the first diaphragm 106 and / or the second diaphragm 109 can also pass continuously into the first reflector 105, 105 'or the second reflector 108.
  • the oblique surfaces of the first panel 106 and the second panel 109 are uneven and have at least one curved surface.
  • the curvature surface may, for example, be formed as a curved subarea 126, 127 with at least one curvature line running transversely and / or in the direction of the optical axis 14.
  • a bend 120 or a bend line is provided which extends at an acute angle to the optical axis 14.
  • the diaphragm edge 117 does not run in a straight line but has formations in the horizontal (Z-direction) and vertical (Y-direction) directions.
  • the diaphragm edge 117 has an offset portion 124, in which the diaphragm edge 117 extends in a straight line between a horizontal plane E contained in the optical axis 14 and one the same parallel horizontal plane E ', which is arranged in the vertical direction below the optical axis 14.
  • the rectilinear offset portion 24 forms an acute angle to the horizontal plane E.
  • the diaphragm edge 117 has an edge rounding with a diameter of at least 0.05 mm.
  • this embodiment of the invention enables an optimization of the light distribution in terms of range, ride comfort and safety. Image defects of the projection lens 12 can be suppressed.
  • the first panel 106 and / or the second panel 109 may also be formed as a substantially flat metal plate, at the free end of which the panel edge 117 extends.
  • the metal plate extends horizontally.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP07115620.2A 2006-09-07 2007-09-04 Phares de projection pour véhicules Active EP1912018B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006041942A DE102006041942A1 (de) 2006-09-07 2006-09-07 Projektionsscheinwerfer für Fahrzeuge

Publications (2)

Publication Number Publication Date
EP1912018A1 true EP1912018A1 (fr) 2008-04-16
EP1912018B1 EP1912018B1 (fr) 2013-11-27

Family

ID=38657167

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07115620.2A Active EP1912018B1 (fr) 2006-09-07 2007-09-04 Phares de projection pour véhicules

Country Status (2)

Country Link
EP (1) EP1912018B1 (fr)
DE (1) DE102006041942A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011045103A1 (fr) 2009-10-15 2011-04-21 Hella Kgaa Hueck & Co. Phare de projection pour véhicules
JP2012022988A (ja) * 2010-07-16 2012-02-02 Koito Mfg Co Ltd 車両用灯具
CN103423685A (zh) * 2012-05-17 2013-12-04 奥斯兰姆施尔凡尼亚公司 以近光和远光输出两者且无活动部分为特征的头灯
WO2014165884A2 (fr) 2013-04-09 2014-10-16 Zizala Lichtsysteme Gmbh Unité lumineuse dotée d'un cache pourvu d'au moins une fenêtre optique
CN104819422A (zh) * 2014-02-05 2015-08-05 株式会社小糸制作所 车辆用灯具
EP2045514B1 (fr) 2007-10-05 2015-12-09 Automotive Lighting Italia S.p.A. Système d'éclairage optique réflectif modulaire et dispositif d'éclairage équipé de celui-ci, en particulier pour véhicules

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008047728B4 (de) * 2008-09-18 2021-01-28 HELLA GmbH & Co. KGaA Scheinwerfer für Kraftfahrzeuge
DE102012211613A1 (de) * 2012-07-04 2014-01-09 Automotive Lighting Reutlingen Gmbh Lichtmodul
DE102012106483A1 (de) 2012-07-18 2014-01-23 Hella Kgaa Hueck & Co. Projektionsscheinwerfer für ein Fahrzeug

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416253A2 (fr) * 1989-09-08 1991-03-13 Inotec Gmbh Gesellschaft Für Innovative Technik Lampe
EP1267116A1 (fr) * 2001-06-14 2002-12-18 Valeo Vision Dispositif d'éclairage ou de signalisation
DE102004047301A1 (de) 2003-09-29 2005-05-04 Koito Mfg Co Ltd Fahrzeugscheinwerfer
EP1607677A1 (fr) 2004-06-17 2005-12-21 Osram Sylvania Inc. LED lampe avec réflecteur conique

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4094446B2 (ja) * 2003-02-03 2008-06-04 株式会社小糸製作所 車両用前照灯及び発光モジュール
JP4108597B2 (ja) * 2003-12-24 2008-06-25 株式会社小糸製作所 車両用灯具ユニット
JP2005332640A (ja) * 2004-05-18 2005-12-02 Ichikoh Ind Ltd 車両用前照灯ユニット
JP4413762B2 (ja) * 2004-12-07 2010-02-10 株式会社小糸製作所 車両用照明灯具

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0416253A2 (fr) * 1989-09-08 1991-03-13 Inotec Gmbh Gesellschaft Für Innovative Technik Lampe
EP1267116A1 (fr) * 2001-06-14 2002-12-18 Valeo Vision Dispositif d'éclairage ou de signalisation
DE102004047301A1 (de) 2003-09-29 2005-05-04 Koito Mfg Co Ltd Fahrzeugscheinwerfer
EP1607677A1 (fr) 2004-06-17 2005-12-21 Osram Sylvania Inc. LED lampe avec réflecteur conique

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2045514B1 (fr) 2007-10-05 2015-12-09 Automotive Lighting Italia S.p.A. Système d'éclairage optique réflectif modulaire et dispositif d'éclairage équipé de celui-ci, en particulier pour véhicules
EP2045514B2 (fr) † 2007-10-05 2022-02-16 Marelli Automotive Lighting Italy S.p.A. Système d'éclairage optique réflectif modulaire et dispositif d'éclairage équipé de celui-ci, en particulier pour véhicules
WO2011045103A1 (fr) 2009-10-15 2011-04-21 Hella Kgaa Hueck & Co. Phare de projection pour véhicules
DE102009049458A1 (de) 2009-10-15 2011-04-28 Hella Kgaa Hueck & Co. Projektionsschweinwerfer für Fahrzeuge
JP2012022988A (ja) * 2010-07-16 2012-02-02 Koito Mfg Co Ltd 車両用灯具
CN103423685A (zh) * 2012-05-17 2013-12-04 奥斯兰姆施尔凡尼亚公司 以近光和远光输出两者且无活动部分为特征的头灯
EP2664841A3 (fr) * 2012-05-17 2015-02-18 Osram Sylvania Inc. Phare de véhicule présentant à la fois de feu de croisement et de feu de route et exempt de pièces mobiles
CN103423685B (zh) * 2012-05-17 2019-07-12 奥斯兰姆施尔凡尼亚公司 以近光和远光输出两者且无活动部分为特征的头灯
WO2014165884A2 (fr) 2013-04-09 2014-10-16 Zizala Lichtsysteme Gmbh Unité lumineuse dotée d'un cache pourvu d'au moins une fenêtre optique
CN104819422A (zh) * 2014-02-05 2015-08-05 株式会社小糸制作所 车辆用灯具
US9631786B2 (en) 2014-02-05 2017-04-25 Koito Manufacturing Co., Ltd. Vehicle lamp with predetermined positioning of shade and projection lens focal point

Also Published As

Publication number Publication date
DE102006041942A1 (de) 2008-03-27
EP1912018B1 (fr) 2013-11-27

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