EP3354970B1 - Beleuchtungsvorrichtung für fahrzeuge mit ästhetischer maske - Google Patents

Beleuchtungsvorrichtung für fahrzeuge mit ästhetischer maske Download PDF

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Publication number
EP3354970B1
EP3354970B1 EP17154080.0A EP17154080A EP3354970B1 EP 3354970 B1 EP3354970 B1 EP 3354970B1 EP 17154080 A EP17154080 A EP 17154080A EP 3354970 B1 EP3354970 B1 EP 3354970B1
Authority
EP
European Patent Office
Prior art keywords
individual
bulged
lighting device
inlet opening
lighting
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
EP17154080.0A
Other languages
English (en)
French (fr)
Other versions
EP3354970A1 (de
Inventor
Pablo RODRIGUEZ ORTEGA
Stephanie RENARD
Sergio Zattoni
Whilk Marcelino GONCALVES
Christophe Le Dall
Michael Bore
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.)
PSA Automobiles SA
Marelli Automotive Lighting Italy SpA
Original Assignee
PSA Automobiles SA
Marelli Automotive Lighting Italy 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 PSA Automobiles SA, Marelli Automotive Lighting Italy SpA filed Critical PSA Automobiles SA
Priority to EP17154080.0A priority Critical patent/EP3354970B1/de
Priority to CN201810096194.8A priority patent/CN108916808B/zh
Publication of EP3354970A1 publication Critical patent/EP3354970A1/de
Application granted granted Critical
Publication of EP3354970B1 publication Critical patent/EP3354970B1/de
Active 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
    • F21S41/50—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
    • 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
    • F21S41/323—Optical layout thereof the reflector having two perpendicular cross sections having regular geometrical curves of a distinct nature
    • 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
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas

Definitions

  • the present invention relates to a lighting device equipped with at least one lighting module and with an aesthetic mask.
  • Lighting devices for vehicles provided with multiple optical modules are known in the art.
  • EP2957822 discloses a lighting device including a rotating module including a fixed reflector, a fixed light source aligned with an axis, and a couple of opposite screens rotating around the axis under the action of a motor actuator; the two screens embody two lenses, e.g. one provided with prisms and one neutral, in order to change the light distribution provided by the light source and the reflector when each of the screens is selectively rotated in front of the reflector.
  • the lighting devices of the prior art provided with one or more rotating modules like e.g. that one of EP2957822 need actuation mechanisms to operate the rotating modules.
  • those mechanisms may be seen from the outside due to the fact that the modern lighting devices are generally provided with outer transparent covers/lens through which the lighting modules are visible. The lighting devices need therefore to be provided with an aesthetic mask to cover the actuating mechanisms.
  • An aesthetic mask may be also necessary in lighting devices having one or more stationary lighting modules in order to join the profile of each lighting module with the overall profile of the lighting device, which generally have to follow the aesthetic profile of the vehicle, and/or to cover possible gaps caused by the mounting in the same housing body of the lighting device of different lighting modules.
  • Such aesthetic masks are usually placed between the lighting modules and the outer transparent cover to close a gap between the lighting modules and the outer profile of the housing body and may be provided with metallized surfaces which may be reflective.
  • parasite light rays may be generated by the reflective surfaces of the aesthetic mask.
  • the parasite rays may cause undesired light distributions or even the dazzling of the drivers of other vehicles.
  • the document GB 2 253 046 A discloses an aesthetical mask provided between a lighting module and the front lens of a headlamp. Said mask is provided with light diffusing regions formed at least in its front end portion. The light beam of the lighting module is diffused widely right and left by the diffusing portions which are formed by cylindrical strip-shaped members.
  • the object of the present invention is to provide a lighting device for vehicles having an housing body, one or more lighting modules arranged therein, which are visible from the outside of the housing body, and at least one aesthetic mask arranged in a gap between the lighting modules and an outer profile of the housing body, wherein the risk of dazzling of crossing vehicles due to parasite rays is avoided or at least greatly reduced when one or more lighting modules are switched on.
  • a lighting device for vehicles having the features set out in the appended claims.
  • reference numeral 1 indicates as a whole a lighting device for vehicles consisting, in the non-limiting embodiment shown, in a vehicle headlight, which is only in part and only schematically shown. It is however to be intended that what will be described can be applied to any vehicle lighting device.
  • the lighting device 1 comprises a generally cup-shaped housing body 2 designed to be mounted on a vehicle, known and not shown for sake of simplicity.
  • Housing body 2 is made of synthetic plastic material by injection molding and has a front inlet opening 3 in use facing opposite to the vehicle and towards a driving or march direction of the vehicle, closed by a transparent cover, preferably consisting in a transparent lens not provided with optical functions ("terse" lens), well known and not shown for sake of simplicity.
  • the housing body 2 carries at the interior thereof at least one (or more) first lighting module 5, which is in the embodiment shown the main lighting module of the lighting device 1, e.g. is a cross-beam light or high beam light, and, possibly, a plurality of secondary lighting modules 6, well known and shown in dotted line and only schematically for sake of simplicity; the secondary lighting modules 6, when present, are designed to provide additional optical functions, all together or singularly, and may be either stationary or rotatable about an axis transverse to an optical axis OA ( figure 2 ) of the main lighting module 5.
  • first lighting module 5 which is in the embodiment shown the main lighting module of the lighting device 1, e.g. is a cross-beam light or high beam light, and, possibly, a plurality of secondary lighting modules 6, well known and shown in dotted line and only schematically for sake of simplicity; the secondary lighting modules 6, when present, are designed to provide additional optical functions, all together or singularly, and may be either stationary or rotatable about an axis transverse to an optical
  • optical axis it is intended herein and below a geometrical axis according with the light rays generated by the lighting module 5 are delivered.
  • the lighting modules 5,6 are all visible from the outside through the inlet opening 3 and the transparent cover, and are arranged side by side facing the inlet opening 3.
  • the lighting modules 5,6 are spaced apart from the inlet opening 3 so that the lighting device 1 also comprises an aesthetic mask 7 to cover a gap G arranged between the inlet opening 3 and the lighting modules 5,6.
  • the aesthetic mask 7 extends parallel to the aforementioned gap G in a substantially horizontal direction and along the full width of the inlet opening 3, transverse the optical axis OA of the first (main) lighting module 5, which optical axis OA is oriented in use in the driving direction of the vehicle.
  • the aesthetic mask 7 is delimited towards the lighting modules 5,6 by an upper surface 8 which hides the gap G.
  • the upper surface 8 is formed by a plurality of individual surface portions 9,10 arranged adjacent to one another, wherein at least part of the individual surface portions, namely portions 9 in the example shown, are bulged upwards.
  • the individual surface portions 9 bulged upwards are delimited by at least one first complex curved surface 11 which is continuous.
  • each first complex curved surface 11 of each bulged surface portion 9 is defined by the convolution of a first spline curve 12 and a second spline curve 13, each first complex curved surface 11 having been generated by the translation of the second spline curve 13 along the first spline curve 12; it is also possible the contrary, according to the circumstances, i.e. each first complex curved surface 11 may be generated by the translation of the first spline curve 12 along the second spline curve 13.
  • spline curve it is intended a geometrical curve generated by graphic interpolation of a set of pre-established points.
  • a spline is a numeric function that is piecewise-defined by polynomial functions, and which possesses a high degree of smoothness at the places where the polynomial pieces connect (which are known as knots).
  • knots which are known as knots.
  • spline interpolation is often preferred to purely polynomial interpolation, because it yields similar results to interpolating with higher degree polynomials while avoiding instability due to Runge's phenomenon.
  • parametric curves whose coordinates are given by splines are popular because of the simplicity of their construction, their ease and accuracy of evaluation, and their capacity to approximate complex shapes through curve fitting and interactive curve design.
  • the most commonly used splines are cubic splines, i.e., of order 3 - in particular, cubic B-spline, which is equivalent to C2 continuous composite Bezier curves.
  • all the individual surface portions 9 bulged upwards are delimited by the one first complex curved surface 11 and by one second complex curved surface 14, which is continuous and which is also defined by the convolution of a first and a second complex curved surfaces, like as schematically shown in figure 3 ; however, according to an aspect of the present invention, the first and second complex curved surfaces (not shown) defining the complex curved surface 14 have curvatures opposite to those of the curves 12 and 13, so that the first and second complex curved surfaces 11,14 have opposite curvatures.
  • the second complex curved surface 14 of each bulged surface portion 9 is arranged immediately adjacent to the first complex curved surface 11 and is separated therefrom by a mathematical discontinuity (a cusp) forming a separation edge 15 between the first and the second complex curved surfaces.
  • the separation edge 15 is also curved and defines the top of each individual bulged surface portion 9; the separation edges 15 of the bulged surface portions 9 are all oriented substantially parallel to the optical axis OA of the lighting module 5, namely in the travel direction of the vehicle on which the lighting device 1 is mounted.
  • the whole upper surface 8 of the aesthetic mask 7 bears the individual bulged surface portions 9, which constitute almost the whole upper surface 8; the remaining of the upper surface 8 is constituted in the non-limiting embodiment shown by a single surface portion 10 which is substantially flat and plane and which define a forward rim 16 of the aesthetic mask 7.
  • the individual bulged surface portions 9 are arranged in a checkerboard configuration, along at least two parallel rows, as well shown in figure 1 , running in the direction of the width of the front inlet opening 3.
  • each individual bulged surface portion 9 defines with another adjacent individual bulged surface portion 9 a separation step 18; all the separation steps are oriented forwards and their height increases progressively in the forward direction, as well shown in figure 4 , so that each bulged surface portion 9 is flush with the surface portion 10 on the side facing the lighting modules 5,6 and then progressively raises above the surface portion 10, raising more at the separation edge 15.
  • the separation steps 18 also separate the forward row of adjacent bulged surface portions 9 by the flat surface portion 10.
  • the upper surface 8 of the aesthetic mask 7 is preferably reflective, e.g. it has been metallized, since the mask 7 is usually made in synthetic plastic material by injection molding, and the bulged surface portions are of a generally prismatic shape owing to a polygonal, e.g. square, shape in plant and owing to the presence of the separation edges 15 and the separation steps 18, so that the whole upper surface 8 has a diamond-like appearance.
  • each bulged surface portion 9 is convex close to the separation step 18 and becomes concave on the opposite side, forming a mathematical flex.
  • Surface 14 is opposite, being concave close to the separation step 18 and becomes convex on the opposite side, also forming a mathematical flex.
  • figure 2 is also schematically represented how the invention works.
  • test screen 20 is indicated a standard test screen, only schematically represented.
  • This test screen is an opaque screen set in front of the lighting device under test and at 25 m distance therefrom, upon which the light rays generated by the lighting device under test are projected. On the test screen 20, therefore, it is reproduced the light distribution obtainable by the lighting device under test.
  • the lighting module 5 When the lighting module 5 is switched on, if the upper surface 8 is made reflective (usually both for aesthetic and technical reasons) some light rays 21 emitted by the lighting devices 5, 6 may hit the surface 8 and are reflected by the same: in the schematic example shown one such light ray 21 may form on the screen 20 a projection point 22.
  • the upper surface 8 was flat, or even if it was shaped to have a diamond-like aspect and the surfaces 11,14 of the bulged surface portions 9 were inclined but flat, the light rays 21 reflected by the surface 8 would be almost parallel and therefore they would form on the test screen 20 a projection 23 quite small (they would be close to each other) and accordingly having more light concentration: in this condition, if the light rays were reflected upwards, they would possibly dazzle incoming drivers even if only position lights or dipped beam lights were switched on.
  • the surfaces 11,14 are calculated in order to continuously vary the orientation of the normal (line perpendicular) to each point of the surface, so that the light rays possibly reflected by the upper surface 8 are spread upon a larger surface and so form a larger projection 24 on the test screen 20; projection 24 has a light concentration so low that no dazzling effect may occur.

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

Claims (7)

  1. Beleuchtungsvorrichtung (1) für ein Fahrzeug, das einen becherförmigen Gehäusekörper (2), der ausgelegt ist, an einer Fahrzeugkarosserie angebracht zu sein, und eine Stirneinlassöffnung (3) aufweist, die in Verwendung einer Vorwärtsfahrtrichtung des Fahrzeugs zugewandt ist, mindestens ein Beleuchtungsmodul (5), das im Inneren des Gehäusekörpers angeordnet ist, wobei es der Einlassöffnung zugewandt und von der Einlassöffnung (3) beabstandet ist, wobei das Beleuchtungsmodul (5; 6) durch die Einlassöffnung (3) von außen sichtbar ist, und eine ästhetische Maske (7), um einen Spalt (G) zwischen der Einlassöffnung und dem mindestens einen Lichtmodul abzudecken, umfasst, wobei sich die ästhetische Maske (7) parallel zu dem Spalt in einer im Wesentlichen horizontalen Richtung erstreckt und in Richtung des mindestens einen Beleuchtungsmoduls (5; 6) durch eine obere Fläche (8) begrenzt ist, die den Spalt (G) verbirgt; wobei:
    i) die obere Fläche (8) durch mehrere einzelne Flächenabschnitte (9, 10) gebildet ist, die zueinander benachbart angeordnet sind;
    ii) mindestens eine Komponente der einzelnen Flächenabschnitte (9) nach oben ausgebaucht ist; und
    iii) die einzelnen, nach oben ausgebauchten Flächenabschnitte (9) durch mindestens eine erste komplex gekrümmte Fläche (11) begrenzt sind, die ununterbrochen ist und die durch die Faltung einer ersten (12) und einer zweiten (13) Spline-Kurve definiert ist;
    iv) jede erste komplex gekrümmte Fläche (11) durch die Translation der zweiten Spline-Kurve (13) entlang der ersten Spline-Kurve (12) oder umgekehrt erzeugt worden ist;
    dadurch gekennzeichnet, dass
    jeder von allen einzelnen, nach oben ausgebauchten Flächenabschnitten (9) durch die eine erste komplex gekrümmte Fläche (11) und durch eine zweite komplex gekrümmte Fläche (14), die ebenfalls ununterbrochen ist und die ebenfalls durch die Faltung einer ersten und einer zweiten Spline-Kurve (12, 13) definiert ist, begrenzt ist; wobei die zweite komplex gekrümmte Fläche (14) in jedem und demselben einzelnen, nach oben ausgebauchten Flächenabschnitt (9) unmittelbar zur ersten (11) benachbart und von der ersten getrennt durch eine mathematische Unstetigkeit, die eine Trennkante (15) zwischen der ersten und der zweiten komplex gekrümmten Fläche bildet, angeordnet ist.
  2. Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die Trennkante (15) die Oberseite jedes einzelnen ausgebauchten Flächenabschnitts definiert und im Wesentlichen parallel zu einer optischen Achse (OA) des mindestens einen Beleuchtungsmoduls ausgerichtet ist.
  3. Beleuchtungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die gesamte obere Fläche (8) der ästhetischen Maske (7) die einzelnen ausgebauchten Flächenabschnitte (9) trägt.
  4. Beleuchtungsvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass die einzelnen ausgebauchten Flächenabschnitte (9) in einer Schachbrettkonfiguration entlang mindestens zweier paralleler Reihen, die in der Richtung der Breite der Stirneinlassöffnung (3) verlaufen, angeordnet sind.
  5. Beleuchtungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass jeder einzelne ausgebauchte Flächenabschnitt (9) mit einem weiteren benachbarten, einzelnen ausgebauchten Flächenabschnitt (9) eine Trennstufe (18) bildet; wobei alle Trennstufen (18) nach vorne orientiert sind.
  6. Beleuchtungsvorrichtung nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die obere Fläche (8) der ästhetischen Maske (7) reflektierend ist.
  7. Fahrzeug, das mit einer Beleuchtungsvorrichtung (1) nach einem der vorhergehenden Ansprüche versehen ist.
EP17154080.0A 2017-01-31 2017-01-31 Beleuchtungsvorrichtung für fahrzeuge mit ästhetischer maske Active EP3354970B1 (de)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP17154080.0A EP3354970B1 (de) 2017-01-31 2017-01-31 Beleuchtungsvorrichtung für fahrzeuge mit ästhetischer maske
CN201810096194.8A CN108916808B (zh) 2017-01-31 2018-01-31 具有美学掩膜的用于车辆的照明装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP17154080.0A EP3354970B1 (de) 2017-01-31 2017-01-31 Beleuchtungsvorrichtung für fahrzeuge mit ästhetischer maske

Publications (2)

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EP3354970A1 EP3354970A1 (de) 2018-08-01
EP3354970B1 true EP3354970B1 (de) 2020-04-29

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EP (1) EP3354970B1 (de)
CN (1) CN108916808B (de)

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FR2709811B1 (fr) * 1993-09-09 1995-12-01 Valeo Vision Projecteur d'aspect intérieur amélioré pour véhicule automobile.
JP3145909B2 (ja) * 1995-11-02 2001-03-12 株式会社小糸製作所 車輌用前照灯
JPH11329009A (ja) * 1998-05-18 1999-11-30 Koito Mfg Co Ltd 車輌用ヘッドランプ
FR2848286B1 (fr) * 2002-12-05 2006-02-10 Valeo Vision Procede de realisation d'un motif decoratif sur un composant d'un dispositif d'eclairage ou de signalisation automobile
US8559095B2 (en) * 2008-11-06 2013-10-15 Blackbrite Aps Radiation emitting element and a method of providing it
CN102121661B (zh) * 2010-12-20 2013-05-29 中国商用飞机有限责任公司 一种用于航行灯的反射面罩以及使用该反射面罩的航行灯
DE102011006073A1 (de) * 2011-03-24 2012-09-27 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugbeleuchtungseinrichtung und Kraftfahrzeugscheinwerfer mit einer solchen Beleuchtungseinrichtung
DE102013100561A1 (de) * 2013-01-21 2014-07-24 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für Fahrzeuge
FR3019116B1 (fr) * 2014-04-01 2017-11-24 Valeo Vision Dispositif lumineux avec ecran de deviation
FR3022327B1 (fr) 2014-06-16 2016-06-10 Valeo Vision Module d'eclairage et/ou de signalisation rotatif
DE102015002341A1 (de) * 2015-02-24 2016-08-25 GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) Scheinwerfer für ein Kraftfahrzeug
JP6519347B2 (ja) * 2015-06-25 2019-05-29 市光工業株式会社 車両用灯具

Non-Patent Citations (1)

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Also Published As

Publication number Publication date
CN108916808B (zh) 2023-04-14
EP3354970A1 (de) 2018-08-01
CN108916808A (zh) 2018-11-30

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