EP1762777A2 - Dispositif d'éclairage pour véhicule automobile - Google Patents

Dispositif d'éclairage pour véhicule automobile Download PDF

Info

Publication number
EP1762777A2
EP1762777A2 EP06119632A EP06119632A EP1762777A2 EP 1762777 A2 EP1762777 A2 EP 1762777A2 EP 06119632 A EP06119632 A EP 06119632A EP 06119632 A EP06119632 A EP 06119632A EP 1762777 A2 EP1762777 A2 EP 1762777A2
Authority
EP
European Patent Office
Prior art keywords
lens
light
auxiliary lens
lighting unit
reflector
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
EP06119632A
Other languages
German (de)
English (en)
Other versions
EP1762777A3 (fr
EP1762777B1 (fr
Inventor
Michael Wüstefeld
Cornelius Dr. Neumann
Carsten Hohmann
Dr. Bruno Hüsgen
Martin Mügge
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 EP1762777A2 publication Critical patent/EP1762777A2/fr
Publication of EP1762777A3 publication Critical patent/EP1762777A3/fr
Application granted granted Critical
Publication of EP1762777B1 publication Critical patent/EP1762777B1/fr
Not-in-force 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/255—Filters

Definitions

  • the invention relates to a lighting unit for motor vehicles with at least one light source, with a reflector associated with the light source, which parallelizes the light emitted by the light source in the light emission direction, with a reflector in the light emission direction upstream additional lens, which is a means for focusing the light and the other Means are assigned to the scattering of the light.
  • a light unit for motor vehicles with a light source with a reflector and a cover
  • the reflector has a plurality of reflector segments.
  • the reflector segments are designed such that they each have a common segment center with maximum illumination intensity. Each segment center thus has a bright point of light, which gives the impression of a light emitting diode as a light source.
  • the reflector surfaces arranged around the segment center of the reflector segment are designed such that a predetermined light distribution is generated.
  • a disadvantage of the known lighting unit that only a limited LED effect in appearance can be achieved by the segmentation of the reflector surface or by an optical division of the reflector surface with different optics. Furthermore, it is disadvantageous that when using a clear cover, the light source is always visible and thus the impression of an LED function is not given.
  • a light unit for motor vehicles with a light source and a reflector wherein the reflector in Lichtabstrahlraum a first auxiliary lens with means for scattering the light and a second auxiliary lens are preceded by means for focusing the light parallelized by the reflector in the light emission direction.
  • the first additional lens is opaque, so that a part of the light emitted by the reflector beam can not be decoupled.
  • the means for scattering at the first auxiliary lens must be arranged relatively close to each other. A space for separate, in each case the means for scattering associated reflectors is therefore not available.
  • Object of the present invention is to develop a lighting unit for motor vehicles such that a modern LED styling with high brilliance and high luminous efficacy is achieved.
  • the invention in connection with the preamble of claim 1, characterized in that the means for focusing the light comprises a plurality of distributed arranged lenses, each of which at least translucent cup-shaped small reflectors are assigned, and that surfaces of the small Reflectors are each aligned with the light source and / or the reflector.
  • an additional lens is provided, which are associated with a plurality of small reflectors and the other to the same associated lenses on the one hand.
  • the surfaces of the small reflectors are translucent on the one hand and aligned on the other hand to the light source and the downstream reflector.
  • the location of the lens appears as the location of the light emitting diode (LED).
  • the small reflectors appear as LED reflectors associated LED reflectors. Due to the fact that the additional lens is translucent, the partial light beam reflected by the reflector, which is not detected by the lens, can also be used for the light distribution.
  • the formation of the small reflectors determines that LED appearance, wherein the outgoing of the surfaces scattering effect is significantly matched to the rear side entering parallel light to produce a predetermined light distribution.
  • the lighting unit according to the invention allows an easy to produce LED appearance, although preferably only a single light source is used in a rear area of the lighting unit.
  • a parallel light beam entering from the reflector on the back side of the small reflectors also makes use of an increased luminous efficacy.
  • a first auxiliary lens is provided with a plurality of small reflectors and arranged in a rear portion thereof through holes.
  • the surfaces of the small reflectors serve as a means of scattering the light.
  • a second additional lens is provided, which is arranged in the light emission direction behind the first auxiliary lens and has a lens in a aligned with the through holes of the first auxiliary lens areas.
  • the lens has as a means for focusing the light on a collection lens segment, which protrudes on a reflector facing the rear side of the second auxiliary lens.
  • a parallelized partial light bundle can thereby be focused onto the passage opening of the first additional optical disc.
  • the lens has a Streulinsensegment that decouples the focused light directly forward in the light emission direction and laterally to the surfaces of the small reflectors.
  • the scattered lens segment serves as a means of scattering the light.
  • the lenses contribute significantly to the LED appearance since they have a higher luminance than the remaining area of the auxiliary lens by collecting and focusing the light and its relatively small area.
  • this can emulate a considerably brighter light-emitting diode in a light-emitting diode system.
  • a lighting unit according to the invention for motor vehicles can be used as a tail light, headlight or auxiliary brake light.
  • the lighting unit can be used for example as a brake, turn signal, rear fog, reversing, tail or position light.
  • a light unit 1 according to a first embodiment according to FIGS. 1 to 3c comprises, in addition to a light source 2 and a reflector 3 assigned to the light source 2, a first auxiliary light disc 5 and a second auxiliary light disc 6 arranged upstream of the reflector 3 in the light emission direction 4.
  • the first additional lens 5 has a plurality of distributed cup-shaped small reflectors 7, each having in a rear region through holes 8.
  • the surfaces of the small reflectors 7 are formed by segment-like optical surfaces 9, which essentially scatters the partial light bundle parallel to the reflector 3 in the light emission direction 4, which strikes the back of the surface of the small reflector 7 according to a predetermined light distribution.
  • the optical surfaces 7 are preferably formed as concave optical surfaces that give off the appearance of an LED reflector.
  • the concave optical surfaces 9 may be parabolic, spherical or formed as a free curved surfaces. The shape of the optical surfaces 9 is particularly dependent on the installation conditions, such as the available space and the depth or of the desired styling of the light unit.
  • the optical surfaces 9 of the small reflector 7 can be clear or provided with a mirrored coating.
  • the layer thickness of the coating produced by evaporation is chosen such that a permeability of the reflected light from the reflector 3 is given.
  • the entire surface of the first auxiliary lens 5 is therefore illuminated, so that a minimum light area is given.
  • the first auxiliary lens 5 of a crystal clear, transparent plastic material, optionally coated with a translucent or opaque material.
  • the second auxiliary lens 6 is disposed between the reflector 3 and the first auxiliary lens 5. As can be seen from FIG. 1, the second auxiliary lens 6 abuts directly on the first auxiliary lens 5, wherein lenses 10 are arranged on the second auxiliary lens 6 in the region of the through openings 8 of the first auxiliary lens 5.
  • the lenses 10 are integrally connected to the second auxiliary lens 6 and each have on a on a light source 2 side facing a collection lens segment 11 which protrudes from a rear side 12 of the second auxiliary lens 6.
  • the collecting lens segment 11 serves to bundle a partial light bundle L which is parallelized by the reflector 3 and which strikes the spherical coupling surface of the collecting lens segment 11.
  • the collecting lens element 11 has a width b 1 , which is greater than a width b 2 of the through hole 8 of the first auxiliary lens 5.
  • the collecting lens segment 11 serves to deflect and focus the partial light beam 13 in the direction of a Streulinsensegmentes 14 of the lens 10, from a front side 15 of the second auxiliary lens 6 abuts against the light source 2.
  • the scattered light segment 14 is formed dome-shaped and has a width which is smaller than the width b 2 of the passage opening 8.
  • the Streulinsensegment 14 is inserted inserted into the through hole 8, wherein a front part of the Streulinsensegmentes 14 protrudes from the through hole 8 ,
  • the scattering lens segment 14 causes a relatively large proportion of light L 1 of the light L coupled into the lens 10 to be coupled out directly in the light emission direction 4 in accordance with a predetermined light distribution.
  • the scattered lens segment 14 causes a small amount of light L 2 of the partial light bundle L to be coupled out laterally in the direction of the optical surfaces 9 of the respectively associated small reflector 7. Due to the relatively large proportion of light L 1 , which is radiated directly, the lens 10 has in comparison to the other surface areas of the first Additional lens 5 a relatively high luminance, so that in this way the relatively bright LEDs (LEDs) can be emulated.
  • the scattering lens segment 14 serves as a means for scattering the partial light bundle L reflected by the reflector 3 in the light emission direction 4.
  • the optical surfaces 9 of the small reflectors 7 likewise serve as means for scattering the further partial light bundle L emitted by the reflector 3 in the light emission direction 4.
  • the collecting lens segment 11 serves as a means for collecting the light emitted from the reflector 3 to the front partial light beam L.
  • the second auxiliary lens 6 may be made crystal clear or colored (e.g., red or yellow).
  • the second auxiliary lens 6 can thus specify the signal color of the lighting unit 1.
  • a colored light source 2 colored light bulb
  • an additional color filter is required.
  • the first additional lens 5 may be provided with a matting.
  • the optical surfaces 9 of the small reflectors 7 may be formed, for example, by an erosion or etching structure.
  • a lighting unit 20 may be provided, in which a first additional light disk 21 is arranged at a distance from a second auxiliary light disk 22.
  • the same components or component functions of the first embodiment and the second embodiment are provided with the same reference numerals.
  • the first auxiliary lens 21 has - as in the first embodiment - the small reflectors 7.
  • a Streulinsensegment 23 is formed, which has the same function as the Streulinsensegment 14 of the lighting unit. 1
  • the second auxiliary lens 22 is flat on a front side 24. On a rear side 25 of the second auxiliary lens 22 rises in alignment with the Streulinsensegmenten 23 of the first auxiliary lens 21, a collection lens segment 26, which has the same function as the Sammelellinsensegment 11 of the first light unit 1.
  • the first auxiliary lens 21 is crystal clear, so that the scattering lens segment 23 can be integrally connected to the first auxiliary lens 21.
  • the light units 1, 20 each further comprise a cover plate, not shown, which is in the light emission direction 4 in front of the first auxiliary lens 5 - preferably spaced - is arranged.
  • the auxiliary lens 5 can be made clear, translucent or opaque in a predetermined color, preferably the color of the intermediate lens 5 does not match the intended color of the signal function.
  • the intermediate lens 5 may be colored red, for example, so that the lamp has a red appearance in the non-operating state of the flashing light function or the reversing light function.
  • the additional lens 5 may be provided on the front and / or back with a mirrored coating.
  • the first auxiliary lens 5 and the second auxiliary lens 6 can also be connected to each other by a two-component method, for example by gating the first auxiliary lens 5 to the second auxiliary lens 6 by means of a two-component injection molding.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
EP06119632A 2005-09-08 2006-08-28 Dispositif d'éclairage pour véhicule automobile Not-in-force EP1762777B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005042576A DE102005042576A1 (de) 2005-09-08 2005-09-08 Leuchteinheit für Kraftfahrzeuge

Publications (3)

Publication Number Publication Date
EP1762777A2 true EP1762777A2 (fr) 2007-03-14
EP1762777A3 EP1762777A3 (fr) 2007-08-01
EP1762777B1 EP1762777B1 (fr) 2009-10-21

Family

ID=37428607

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06119632A Not-in-force EP1762777B1 (fr) 2005-09-08 2006-08-28 Dispositif d'éclairage pour véhicule automobile

Country Status (3)

Country Link
EP (1) EP1762777B1 (fr)
AT (1) ATE446476T1 (fr)
DE (2) DE102005042576A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2199663A1 (fr) * 2008-12-18 2010-06-23 Peugeot Citroen Automobiles SA Masque de bloc optique de vèhicule automobile à excroissance pour la prolongation d'une paroi de réflecteur

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013222481A1 (de) 2013-11-06 2015-05-07 Zumtobel Lighting Gmbh Optisches Element für eine Leuchte, sowie Leuchte
CN106016123B (zh) * 2016-06-29 2019-05-28 林灿鹏 外罩注塑一体式防水天使眼雾灯

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156973A1 (de) 2001-11-20 2003-05-28 Hella Kg Hueck & Co Fahrzeugleuchte
DE10355210A1 (de) 2003-11-26 2005-06-23 Hella Kgaa Hueck & Co. Leuchteinheit für Fahrzeuge

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1128924B (it) * 1980-07-10 1986-06-04 Iao Industrie Riunite Spa Gruppo ottico per autoveicoli
DE3336178A1 (de) * 1983-10-05 1985-04-25 Robert Bosch Gmbh, 7000 Stuttgart Signalleuchte, insbesondere vordere blinkleuchte, fuer kraftfahrzeuge
DE4230963A1 (de) * 1992-09-16 1994-03-17 Teves Gmbh Alfred Signalleuchte
FR2808247B1 (fr) * 2000-04-26 2002-08-23 Axo Scintex Cie Equip Automobi Feu de signalisation de vehicule
MXPA05003469A (es) * 2002-10-01 2005-06-03 Truck Lite Co Faro delantero con diodo emisor de luz y montaje de faro delantero.
FR2857434B1 (fr) * 2003-07-11 2006-09-29 Valeo Vision Feu de signalisation pour vehicule
FR2863686B1 (fr) * 2003-12-10 2006-02-24 Sagem Feu de signalisation a diodes electroluminescentes

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10156973A1 (de) 2001-11-20 2003-05-28 Hella Kg Hueck & Co Fahrzeugleuchte
DE10355210A1 (de) 2003-11-26 2005-06-23 Hella Kgaa Hueck & Co. Leuchteinheit für Fahrzeuge

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2199663A1 (fr) * 2008-12-18 2010-06-23 Peugeot Citroen Automobiles SA Masque de bloc optique de vèhicule automobile à excroissance pour la prolongation d'une paroi de réflecteur
FR2940204A1 (fr) * 2008-12-18 2010-06-25 Peugeot Citroen Automobiles Sa Masque de bloc optique de vehicule automobile a excroissance pour la prolongation d'une paroi de reflecteur

Also Published As

Publication number Publication date
EP1762777A3 (fr) 2007-08-01
ATE446476T1 (de) 2009-11-15
EP1762777B1 (fr) 2009-10-21
DE502006005164D1 (de) 2009-12-03
DE102005042576A1 (de) 2007-03-15

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