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EP2276969B1 - Appareil d éclairage pour véhicule - Google Patents

Appareil d éclairage pour véhicule Download PDF

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Publication number
EP2276969B1
EP2276969B1 EP09732832.2A EP09732832A EP2276969B1 EP 2276969 B1 EP2276969 B1 EP 2276969B1 EP 09732832 A EP09732832 A EP 09732832A EP 2276969 B1 EP2276969 B1 EP 2276969B1
Authority
EP
European Patent Office
Prior art keywords
reflector
light
light source
lens
scattering elements
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.)
Active
Application number
EP09732832.2A
Other languages
German (de)
English (en)
Other versions
EP2276969A1 (fr
Inventor
Henning Kiel
Mathias Thamm
Sebastian Haering
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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 Volkswagen AG filed Critical Volkswagen AG
Publication of EP2276969A1 publication Critical patent/EP2276969A1/fr
Application granted granted Critical
Publication of EP2276969B1 publication Critical patent/EP2276969B1/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
    • 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
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors

Definitions

  • the present invention relates to a lamp for a vehicle having a light source, a first reflector and at least one lens, which are arranged so that light emitted by the light source is reflected by a reflector surface of the first reflector and forms a first luminous surface of the luminaire.
  • the space requirements for lighting units are very tight.
  • the signal effect of a luminaire is determined by the circumferential size of the radiating surface and by the luminance.
  • the vehicle lights contribute significantly to the design of the vehicle. Due to the design of the lights, the vehicle is often to be given a characteristic appearance, which is easily recognized again. Furthermore, there is the problem that the cost of producing the lights should be as low as possible.
  • the vehicle lamp comprises components which in turn comprise light-emitting diodes and reflectors.
  • the reflectors have a plurality of reflector surfaces, via which the light emitted by the light emitting diodes is directed in the light emission direction.
  • the light of the different reflector surface is scattered on light-scattering elements.
  • the luminaire according to the invention has at least one second reflector whose reflector surface is arranged separately from the reflector surface of the first reflector and which is arranged such that light emitted by the light source is reflected by the reflector surface of the second reflector and forms a second luminous surface of the luminaire, wherein the first and second luminous surfaces are discontinuous.
  • the at least one lens comprises light-scattering elements.
  • at least one lens or the light-scattering elements of the lens is / are arranged only in the area of the luminous surfaces of the luminaire.
  • the first luminous area has a disk or rectangular shape and the second luminous area has an angular shape.
  • the light emission of the one light source strikes two separate reflector surfaces, which provide two separate luminous surfaces.
  • several light sources are provided.
  • each luminous area is assigned at least one separate light source. Due to the structure of the lamp according to the invention costs can be saved for the production of the lamp, since only one light source is required. Furthermore, the space for the usually provided further light source can be saved. Finally, the non-contiguous luminous surfaces of the luminaire can give a characteristic signature, by means of which the vehicle can be easily recognized again.
  • the light source is arranged both in the focal point of the reflector surface of the first reflector and in the focal point of the reflector surface of the second reflector.
  • the focal point of a reflector surface is understood to be the location from which emitted light beams are reflected by the reflector surface such that the reflected light beams are parallel to one another.
  • the light rays emitted by the light source are thus reflected in this embodiment of the luminaire according to the invention of the reflector surfaces of the two reflectors so that in each case a light beam is generated from parallel light beams. Only with the lens the parallel light rays are scattered.
  • This embodiment has the advantage that the luminous surfaces have a homogeneous luminance.
  • the reflector surface of the first reflector lies on a surface formed by a first paraboloid of revolution. Furthermore, the reflector surface of the second reflector lies on a surface formed by a second paraboloid of revolution.
  • the light source is arranged in particular at the focal point of both paraboloid of revolution. Due to the parabolic shape of the reflector surfaces and the arrangement of the light source in the focal point of the parabolas, the light reflected from the reflector surfaces is parallel. Due to this parallelism of the reflected light, which forms the two luminous surfaces, the light intensity in the luminous surfaces is very homogeneous from all viewing angles. The illuminated areas thus appear from all angles with the same brightness.
  • the two paraboloid rotors can be identical.
  • the two reflector surfaces are separated from each other on the surface of a single paraboloid of revolution.
  • the choice of the position and the size of the reflector surfaces on the imaginary rotation paraboloid can depend on the one hand on the space requirements and on the other hand on the shape and size of the desired luminous surfaces.
  • the first and second paraboloid of revolution are different.
  • the two paraboloidal paraboloids thus have different parametrizations, the focal point of both paraboloidal parabolas lying identically at the position of the light source.
  • the position of the two reflector surfaces can be varied even more, so that the lamp can be better adapted to the space requirements.
  • the result is staggered and separately arranged reflector surfaces that provide parallel light beams in the direction of the lens.
  • the light emitted by the light source strikes the reflector surface of the first reflector directly and directly onto the reflector surface of the second reflector. There are between the light source and the reflector surfaces neither optically active elements such. As lenses, prisms or the like, still arranged transparent discs.
  • the light disk comprises light-scattering elements, in particular both on the side facing the light source and on the side remote from the light source.
  • the light-scattering elements extend on the side facing away from the light source in the horizontal direction.
  • they are horizontally oriented sub-rollers.
  • On the light source side facing preferably extend light-scattering elements in the vertical direction. Also in this case, it may be vertically oriented part rollers.
  • the sub-rollers can have the shape of a circular or parabolic section or another convex curvature in cross-section on the light entrance or light exit side, which results essentially from the desired light scattering.
  • the light-scattering elements on the side facing away from the light source side are preferably formed particularly distinctive. They have a different curvature than the light-scattering elements on the side facing the light source.
  • the curvature of the horizontally aligned sub-rollers on the side facing away from the light source side of the lens is in particular smaller than the curvature of the vertically oriented sub-rollers on the light source side facing. This design has the consequence that the part rollers on the outside from the outside are very clearly visible.
  • the light-scattering elements of the lens ensure that the parallel light coming from the reflectors onto the lens is scattered at the desired angles.
  • the light-scattering elements are designed so that the contour of the lens on the externally visible side of the aesthetic requirements, i. the desired design, whereas the light scattering elements on the back, i. on the side facing the light source, the main function of the light scattering takes over. Due to the visible on the outside of the lens a certain light scattering is thus generated. However, the desired light scattering is only generated by the addition of the light-scattering elements on the side not visible from the outside.
  • the lens or the light-scattering elements of the lens is arranged only in the area of the luminous surfaces of the luminaire.
  • the lens can thus be two separate lenses. Furthermore, only the light-scattering elements may be provided in these areas, but the lens may be otherwise contiguous.
  • the light source is shielded by a mask which prevents a direct view from the outside to the light source. In this way it is ensured that from the outside only the two illuminated areas are perceived, not the light source itself.
  • this has a housing which is closed by a cover plate in the light exit direction.
  • the lens is arranged in this case within the housing. It thus forms an intermediate lens.
  • the lens is preferably designed in clear glass optics, i. You can see from the outside without significant interference inside the case.
  • the appearance of the lamp is thus determined by the intermediate lens with the light-scattering elements on the outside both in the on state of the light source and in the off state of the light source.
  • the luminous surfaces are formed, which are visible through the lens.
  • Fig. 1 First, the basic structure of the lamp is described. In the lamp of the embodiment shown is a tail light. It should be noted that the in Fig. 1 Section shown does not necessarily take place along a plane. Rather, the cut can also be chosen so that both reflectors are visible.
  • the directional information such as horizontal, vertical, and lateral, refer in the following to an installation of the lamp in a vehicle.
  • the light comprises a light source 1.
  • This may be a known light source 1, which is as punctiform as possible.
  • a first reflector 2 with a reflector surface 3 is provided.
  • the light emitted from the light source 1 hits the reflector surface 3 and is reflected there in the direction L of the fundamental light emission of the lamp.
  • the reflector surface 3 lies on the surface of a first paraboloid of revolution, wherein at the focal point of this first paraboloid of revolution the light source. 1 is arranged.
  • the light striking the reflector surface 3 from the light source 1 is thus reflected so that a parallel light beam results. This light beam impinges on a designed as intermediate lens 6 lens.
  • the intermediate lens 6 has on the light source 1 facing Side light scattering elements 15 and on the side facing away from the light source 1, ie on the visible side from the outside, light scattering elements 13. Of these light-scattering elements 15 and 13, the light is deflected in the vertical and horizontal directions and a luminous surface 17 is formed, as will be explained later.
  • the luminaire comprises a second reflector 4, the reflector surface 5 of which is arranged separately from the reflector surface 3 of the first reflector 2.
  • the light emitted by the light source 1 also strikes the reflector surface 5 of the second reflector 4 and is reflected there in the direction L.
  • the reflector surface 5 of the second reflector 4 lies on a surface formed by a paraboloid of revolution.
  • the paraboloid of revolution of the reflector surface 5 of the second reflector 4 may be the same paraboloid of revolution on whose surface the reflector surface 3 of the first reflector 2 lies.
  • the reflector surface 5 of the second reflector 4 lies on the surface of a second paraboloid of revolution, which differs from the first paraboloid of revolution.
  • the focal points of the two paraboloidal rotors are each at the position of the light source 1. In the present case, both the reflector surfaces 3 and 5, and the two reflectors 2 and 4 are arranged separately from each other.
  • the light emitted by the light source 1, which falls on the reflector surface 5 of the second reflector 4 is reflected by the reflector surface 5 so that there is a further parallel light beam, which falls on a second intermediate lens 7.
  • the light-scattering elements 13 and 14 of the intermediate lenses 6 and 7, which are arranged on the side facing away from the light source 1 be formed identically.
  • a second luminous surface 18 is formed, which is characterized in that it is not related to the first luminous surface 17, which is formed in the intermediate lens 6. There are thus created by a single light source 1 two separate luminous surfaces 17 and 18.
  • the reflector surfaces 3 and 5 are not Rotationsparaboloide but so-called free-form reflector surfaces.
  • the freeform reflector surfaces are adapted to the arrangement of the light source 1, that of the Freiförmreflektor vom a parallel light beam is generated. In this sense, the light source 1 is thus arranged in the focal point of the free-form reflector surfaces.
  • the lamp is provided within a housing 12, which is closed by a cover plate 8 to the outside.
  • the lens 8 is designed in clear glass optics, so that the rays of light emanating from the intermediate lenses 6 and 7 are essentially not influenced by the lens 8 with respect to their direction.
  • the intermediate lenses 6 and 7 are arranged perpendicular to the direction L. In this plane perpendicular to the direction L is located between the two intermediate lenses 6 and 7, a mask 9, above and below the intermediate lenses 6 and 7 are also the masks 10 and 11.
  • the mask 9 shields the light source 1 so that it prevents a direct view from the outside to the light source 1.
  • the masks 10 and 11 also prevent that you can see from the outside laterally into the light. From the outside, therefore, only the light-scattering elements 13 and 14 of the light source 1 facing away from the sides of the intermediate lenses 6 and 7 can be seen, which form the luminous surfaces 17 and 18.
  • the lamp can be completed in cross-section of the masks 9, 10 and 11 and the intermediate lenses 6 and 7.
  • the masks 9 to 11, in particular the mask 9, could also be provided separately from the intermediate lenses 6 and 7.
  • the intermediate lenses 6 and 7 could be formed in this case by a single intermediate lens, wherein the light-scattering elements 13 to 16 are arranged only in the region of the desired luminous surfaces 17 and 18.
  • FIGS. 2 and 3 An example of a shape of the luminous surfaces 17 and 18 and the associated reflectors 2 and 4 is in the FIGS. 2 and 3 shown.
  • the reflectors 2 and 4 are arranged separately from each other, staggered.
  • the shape of the reflectors 2 and 4 depends on the desired shape of the luminous surfaces 17 and 18, which in Fig. 3 is shown.
  • the luminous surfaces 17 is substantially disc-shaped or rectangular and the luminous surface 18 is angular.
  • Fig. 4 shows a detail of the intermediate lens 7.
  • the intermediate lens 6 is shaped accordingly.
  • the intermediate lens 7 has light-scattering elements 14 which extend in the horizontal direction. These are part rolls.
  • the curvature of the surface may be circular or have another convexly curved shape.
  • the parallel incident light beam becomes a vertical direction scattered.
  • light-scattering elements 16 are arranged, which extend in the vertical direction. In this case too, there are partial rolls whose curvature differs from the curvature of the partial rolls of the light-scattering elements 14.
  • the curvature of the light-scattering elements. 16 is larger, so that more light-scattering elements 16 are arranged on the intermediate lens 7 per unit length, as light-scattering elements 14.
  • the light-scattering elements 16 cause a deflection of the parallel incident light beam in the horizontal direction. They thus essentially determine from which angles the luminaire is visible to other road users.
  • aspects of the design need not be taken into account since they are essentially invisible from the outside. They can be chosen so that the optical requirements of the lamp are met.

Landscapes

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

Claims (12)

  1. Appareil d'éclairage pour un véhicule avec une source lumineuse (1), un premier réflecteur (2), au moins un deuxième réflecteur (4) et au moins une verrine (6, 7) disposés de telle sorte que la lumière émise par la source lumineuse (1) est réfléchie par une surface de réflecteur (3) du premier réflecteur (2) et forme une première surface d'éclairage (17) de l'appareil d'éclairage et que la lumière émise par la source lumineuse (1) est réfléchie par la surface de réflecteur (5) du deuxième réflecteur (4) et forme une deuxième surface d'éclairage (18) de l'appareil d'éclairage, la surface de réflecteur (5) du deuxième réflecteur (4) étant disposée de façon séparée de la surface de réflecteur (3) du premier réflecteur (2), la première et la deuxième surface d'éclairage (17, 18) n'étant pas interdépendantes, l'au moins une verrine (6, 7) comprenant des éléments (13 à 16) de dispersion de lumière et l'au moins une verrine (6, 7) ou les éléments (13 à 16) de dispersion de lumière de la verrine (6, 7) n'étant disposés que dans la région des surfaces d'éclairage (17, 18) de l'appareil d'éclairage, la première surface d'éclairage (17) prenant une forme de disque ou de rectangle, caractérisé en ce que la deuxième surface d'éclairage (18) prenant ainsi une forme anguleuse.
  2. Appareil d'éclairage selon la revendication 1, caractérisé en ce que la source lumineuse (1) est disposée dans le point focal de la surface de réflecteur (3) du premier réflecteur (2) et dans le point focal de la surface de réflecteur (5) du deuxième réflecteur (4).
  3. Appareil d'éclairage selon la revendication 1 ou 2, caractérisé en ce que la surface de réflecteur (3) du premier réflecteur (2) repose sur une surface formée par un premier paraboloïde de révolution et que la surface de réflecteur (5) du deuxième réflecteur (4) repose sur une surface formée par un deuxième paraboloïde de révolution.
  4. Appareil d'éclairage selon la revendication 3, caractérisé en ce que le premier et le deuxième paraboloïde de révolution sont identiques.
  5. Appareil d'éclairage selon la revendication 3, caractérisé en ce que le premier et le deuxième paraboloïde de révolution sont différents.
  6. Appareil d'éclairage selon l'une quelconque des revendications précédentes, caractérisé en ce que la lumière émise par la source lumineuse percute directement la surface de réflecteur (3) du premier réflecteur (2) et percute directement la surface de réflecteur (5) du deuxième réflecteur (4).
  7. Appareil d'éclairage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'au moins une verrine (6, 7) comprend des éléments (13 à 16) de dispersion de lumière tant sur le côté orienté vers la source lumineuse (1) que sur le côté opposé à la source lumineuse (1).
  8. Appareil d'éclairage selon la revendication 7, caractérisé en ce que les éléments (13, 14) de dispersion de lumière s'étendent dans la direction horizontale, sur le côté opposé à la source lumineuse (1).
  9. Appareil d'éclairage selon la revendication 8, caractérisé en ce que les éléments (13, 14) de dispersion de lumière sont des rouleaux partiels alignés à l'horizontale sur le côté opposé à la source lumineuse (1).
  10. Appareil d'éclairage selon l'une quelconque des revendications 7 à 9, caractérisé en ce que les éléments (15, 16) de dispersion de lumière s'étendent dans la direction verticale sur le côté orienté vers la source lumineuse (1).
  11. Appareil d'éclairage selon l'une quelconque des revendications précédentes, caractérisé en ce que la source lumineuse (1) est masquée par un masque (9) empêchant de voir directement la source lumineuse (1) depuis l'extérieur.
  12. Appareil d'éclairage selon l'une quelconque des revendications précédentes, caractérisé en ce que l'appareil d'éclairage comporte un carter (12) fermé par un disque d'extrémité (8) dans la direction de sortie de lumière (L) et que l'au moins une verrine (6, 7) est disposée à l'intérieur du carter (12).
EP09732832.2A 2008-04-16 2009-02-27 Appareil d éclairage pour véhicule Active EP2276969B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008019125.6A DE102008019125B4 (de) 2008-04-16 2008-04-16 Fahrzeugleuchte mit einer Lichtquelle, zwei Reflektoren, zwei Lichtscheiben mit jeweils einer Leuchtfläche und einer Maske zwischen den zwei Leuchtflächen, die eine direkte Sicht auf die Lichtquelle verhindert
PCT/EP2009/052406 WO2009127464A1 (fr) 2008-04-16 2009-02-27 Appareil d’éclairage pour véhicule

Publications (2)

Publication Number Publication Date
EP2276969A1 EP2276969A1 (fr) 2011-01-26
EP2276969B1 true EP2276969B1 (fr) 2015-08-12

Family

ID=40524793

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09732832.2A Active EP2276969B1 (fr) 2008-04-16 2009-02-27 Appareil d éclairage pour véhicule

Country Status (5)

Country Link
US (1) US8523415B2 (fr)
EP (1) EP2276969B1 (fr)
CN (2) CN103499060B (fr)
DE (1) DE102008019125B4 (fr)
WO (1) WO2009127464A1 (fr)

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DE102011110629B4 (de) * 2011-08-18 2025-04-03 Volkswagen Aktiengesellschaft Beleuchtungsvorrichtung
EP2894086B1 (fr) * 2012-09-07 2017-12-20 Mitsubishi Electric Corporation Dispositif de phare de véhicule
FR3007821B1 (fr) * 2013-06-28 2018-04-20 Automotive Lighting Rear Lamps France Dispositif a eclairage indirect pour feu arriere de vehicule automobile
WO2015003949A1 (fr) * 2013-07-09 2015-01-15 Koninklijke Philips N.V. Dispositif d'éclairage, en particulier pour une signalisation automobile présentant un motif de lumière ayant une forme spéciale
CN103994386A (zh) * 2014-05-29 2014-08-20 江苏迅驰汽车部件有限公司 一种汽车后尾灯
FR3022608B1 (fr) * 2014-06-19 2018-07-20 Psa Automobiles Sa. Dispositif d'eclairage et/ou de signalisation generant une lumiere homogene sur un ecran
DE102017214346A1 (de) * 2017-08-17 2019-02-21 Volkswagen Aktiengesellschaft Scheinwerfer für ein Fahrzeug
JP7023780B2 (ja) * 2018-04-19 2022-02-22 スタンレー電気株式会社 車両用灯具
DE102018112453A1 (de) * 2018-05-24 2019-11-28 HELLA GmbH & Co. KGaA Vorfeldlichtmodul
DE102024205986A1 (de) * 2024-06-26 2025-12-31 Volkswagen Aktiengesellschaft Fahrzeugleuchte sowie Kraftfahrzeug mit einer solchen Fahrzeugleuchte

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Also Published As

Publication number Publication date
WO2009127464A1 (fr) 2009-10-22
CN103499060B (zh) 2017-05-31
DE102008019125B4 (de) 2025-04-30
US8523415B2 (en) 2013-09-03
DE102008019125A1 (de) 2009-10-22
EP2276969A1 (fr) 2011-01-26
CN102007340B (zh) 2016-10-12
US20110103085A1 (en) 2011-05-05
CN102007340A (zh) 2011-04-06
CN103499060A (zh) 2014-01-08

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