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EP3867563B1 - Light module providing two photometric functions having distinct light signatures - Google Patents

Light module providing two photometric functions having distinct light signatures Download PDF

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Publication number
EP3867563B1
EP3867563B1 EP19795610.5A EP19795610A EP3867563B1 EP 3867563 B1 EP3867563 B1 EP 3867563B1 EP 19795610 A EP19795610 A EP 19795610A EP 3867563 B1 EP3867563 B1 EP 3867563B1
Authority
EP
European Patent Office
Prior art keywords
light
support plate
reflector
section
elongated section
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
EP19795610.5A
Other languages
German (de)
French (fr)
Other versions
EP3867563A1 (en
Inventor
Rodolphe Peron
Filipe Videira
Gilles Moynier
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
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PSA Automobiles SA
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Filing date
Publication date
Application filed by PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3867563A1 publication Critical patent/EP3867563A1/en
Application granted granted Critical
Publication of EP3867563B1 publication Critical patent/EP3867563B1/en
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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
    • F21S41/18—Combination of light sources of different types or shapes
    • 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
    • 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
    • F21S41/19—Attachment of light sources or lamp holders
    • 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
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/333—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/47—Attachment thereof

Definitions

  • the present invention generally relates to the field of optical lighting and signaling units for motor vehicles. It relates in particular to a light module of such an optical unit capable of providing two different photometric lighting and/or signaling functions.
  • DRL Daytime Running Light
  • This daytime running light function whose light emission color is white, must be activated automatically when the vehicle is moving forward and the main or dipped beam headlights are off in order to increase its visibility in driving conditions. day light.
  • the light modules providing this daytime running light function comprise a plurality of light-emitting diodes, commonly referred to by the English acronym LED (for "Light Emitting Diodes”) and now considered as an advantageous alternative to incandescent bulbs in terms of size, reduced electrical energy consumption, increased lifespan and freedom of style.
  • LED Light Emitting Diodes
  • These light-emitting diodes are installed on a printed circuit board commonly referred to by the English acronym PCB (for “Printed Circuit Board”) and incorporating a control device.
  • PCB for “Printed Circuit Board”
  • optical element for example, a reflector or a light guide
  • This last function implemented manually via a control member to signal the driver's desire to change the direction of the vehicle, must also respect a certain color of light emission (in this case, amber or yellow).
  • the regulatory requirements require that the daytime running lights go out as soon as a direction indicator light is actuated by the user so as to make it more visible to other users.
  • European patent application EP 2 161 494 thus discloses a light module for a vehicle headlight unit comprising a first series and a second series of light-emitting diodes respectively emitting amber-colored and white-colored light rays.
  • the two series of diodes are installed on a PCB opposite the rear edge of a substantially flat transparent body of an optical guide which receives the light rays of different colors coming from said diodes and guides them towards its front output edge.
  • the light signature of the two daytime running light and direction indicator light functions proves to be perfectly identical, which is not advantageous from a style point of view.
  • the present invention therefore aims to improve the situation.
  • a light module for a motor vehicle lighting and/or signaling optical unit comprising a plurality of point light sources arranged on at least one support plate and capable of emitting light rays of different colors to ensure different photometric functions, as well as an optical element capable of directing the path of light rays from said light sources towards a space to be illuminated; said optical element being constituted by a reflector comprising first and second elongated sections joined by a curved intermediate section, said light module comprising a first support plate extending along the internal edge of said first elongated section and carrying a first series of sources spot lights capable of emitting light rays of a first color in the direction of this first elongated section, said light module further comprising a second support plate extending along the outer edge of said second elongated section and carrying a second series of sources spot lights capable of emitting light rays of a second color in the direction of this second elongated section, said first support plate comprising an extension extending beyond said first
  • the light module according to the invention makes it possible to perform two different photometric functions (such as in particular the daytime running light and change of direction) presenting light signatures that are distinct and well delimited from each other thanks to the screen formed by the extension extending the first section.
  • the invention also relates, in a second aspect, to an optical vehicle lighting and/or signaling unit, characterized in that it comprises at least one such light module.
  • the figure 1 shows a light module 1 according to the invention intended to be integrated into a front optical unit for motor vehicle signaling to provide the daytime running light and direction change indicator light functions.
  • the light module 1 comprises two support plates 10, 20 each carrying a plurality of point light sources, as well as a reflector 30 in the shape of a chevron able to reflect the light rays emitted by these light sources towards a space to be illuminated.
  • This reflector 30 comprises a first elongated section 31 extending in a substantially horizontal direction, a second elongated section 32 extending in an oblique direction forming an obtuse angle of approximately 120° with the first section 31, as well as a intermediate curve 33 connecting the two sections 31, 32 by two of their ends.
  • the first and second elongated sections 31, 32 each have in section a similar profile of the parabolic type.
  • the reflector 30 is preferably obtained by molding from an injected thermoplastic material such as polyethylene or polypropylene, its functional face being subsequently covered with an aluminized reflective coating.
  • the first support plate 10 is formed by a printed circuit board of the PCB type (for "Printed Circuit Board” in English) extending along the inner edge of the first horizontal elongated section 31 while being fixed thereto rigidly.
  • This first support plate 10 carries a series of five first light-emitting diodes (LEDS) 40 capable of emitting light rays of white color.
  • LEDS first light-emitting diodes
  • the diodes 40 are aligned in a direction parallel to the focus axis F 1 ( figure 2 ) of the first elongated section 31 of the reflector 30 and regularly spaced from each other.
  • the second support plate 20 is also formed by a printed circuit board of the PCB type (for "Printed Circuit Board” in English) extending along the outer edge of the second oblique elongated section 32 while being fixed thereto rigidly.
  • This second support plate 10 carries a series of five second light-emitting diodes (LEDS) 50 able to alternately emit light rays of white color and amber color.
  • LEDS light-emitting diodes
  • Diodes 50 are aligned in a direction parallel to focus axis F 2 ( picture 3 ) of the second elongated section 32 of the reflector 30 and regularly spaced from each other.
  • the first support plate 10 comprises an extension 11 extending, beyond the first horizontal elongated section 31 of the reflector 30, as far as the second support plate 20, so as to constitute a screen limiting the parasitic reflections of light rays coming from the second series of diodes 50 on the curved intermediate section 33 and the first horizontal elongated section 31.
  • this extension 11 is advantageously profiled so as to be contiguous with the second support plate 20, so that no light ray coming from the diodes 50 can pass between the two support plates 10, 20.
  • This extension 11 of the support plate 10 carries a light-emitting diode 60, aligned with the first diodes 40, and capable of emitting light rays of identical color (i.e. white) to that of the rays emitted by these first diodes 40.
  • the diode 60 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.
  • the second support plate 20 also comprises an extension 21 extending beyond the second oblique elongated section 32 of the reflector 30, opposite the curved intermediate section 33.
  • This extension 21 of the support plate 20 carries a light-emitting diode 70, aligned with the second diodes 50, and capable of emitting light rays of identical color (ie white) to that of the rays emitted by the first diodes 40.
  • the diode 70 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.
  • the two support plates 10, 20 are advantageously white in color so as to redirect towards the reflector 30 the vast majority of the light rays reflected towards the latter by this reflector 30, and thus to avoid the vision of shadow zones by an observer. external looking light module 1.
  • These support plates 10, 20 are also connected to a control device, not shown, capable of managing the switching on and off of the light diodes 40, 50, 60 and 70.
  • the diodes 40, 50, 60 and 70 light up automatically by emitting white light rays towards the three sections 31, 32, 33 of the reflector 30, so as to ensure the daytime running light function.
  • This function thus has a continuous light signature in the shape of a chevron corresponding to the shape of the reflector 30.
  • this intermediate section 33 makes it possible to ensure better homogeneity of the light intensity over the whole of the reflector 30 (this intermediate section 33 would in fact be less luminous than the other two elongated sections 31, 32 if one of these two diodes was absent).
  • the diodes 40, 60 and 70 are automatically extinguished while the color of the light rays emitted by the diodes 50 in the direction of the only second elongated section oblique 32 changes from white to amber, so as to provide the direction change indicator light function.
  • This function thus has a continuous light signature of oblique elongated shape corresponding to that of the second section 32 of the reflector 30.
  • the presence of the screen formed by the extension 11 of the first support plate 10 makes it possible to precisely define the lower end of this light signature (the intermediate section 33 and the first section 31 of the reflector 30 then receiving no or almost no light rays) so as to obtain a better visual rendering and to comply with the regulations concerning the minimum height of the direction change indicator light function (this must be at least 350 mm from the ground).
  • the light-emitting diodes are replaced by other point light sources such as laser diodes.
  • the diodes of the second series are capable of emitting only light rays of amber color.
  • the number and/or the emission colors of the diodes forming the first and/or the second series of diodes are different (each of these series comprising for example between 4 and 10 aligned diodes).
  • the angle between the two elongated sections of the reflector is also different and for example between 90 and 130°.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Spectrometry And Color Measurement (AREA)

Description

Domaine techniqueTechnical area

La présente invention concerne d'une manière générale le domaine des blocs optiques d'éclairage et de signalisation pour véhicules automobiles. Elle vise en particulier un module lumineux d'un tel bloc optique apte à assurer deux fonctions photométriques d'éclairage et/ou de signalisation différentes.The present invention generally relates to the field of optical lighting and signaling units for motor vehicles. It relates in particular to a light module of such an optical unit capable of providing two different photometric lighting and/or signaling functions.

Technique antérieurePrior technique

Les exigences réglementaires en matière de signalisation des véhicules automobiles ont évoluées ces dernières années et imposent désormais la présence à l'avant des véhicule de modules lumineux aptes à assurer la fonction feu diurne, couramment désignée sous l'acronyme anglais DRL (pour « Daytime Running Light »).Regulatory requirements in terms of motor vehicle signaling have evolved in recent years and now require the presence at the front of the vehicle of light modules capable of providing the daytime running light function, commonly referred to by the English acronym DRL (for "Daytime Running Light”).

Cette fonction feu diurne dont la couleur d'émission lumineuse est blanche, doit être activée automatiquement dès lors que le véhicule se déplace vers l'avant et que les feux de route ou de croisement sont éteints afin d'accroître sa visibilité dans des conditions de lumière du jour.This daytime running light function, whose light emission color is white, must be activated automatically when the vehicle is moving forward and the main or dipped beam headlights are off in order to increase its visibility in driving conditions. day light.

De manière courante, les modules lumineux assurant cette fonction feu diurne comprennent une pluralité de diodes électroluminescentes, couramment désignées sous l'acronyme anglais LED (pour « Light Emitting Diodes ») et considérées désormais comme une alternative avantageuse aux ampoules à incandescence en termes d'encombrement, de baisse de consommation d'énergie électrique, d'augmentation de la durée de vie et de liberté de style.Commonly, the light modules providing this daytime running light function comprise a plurality of light-emitting diodes, commonly referred to by the English acronym LED (for "Light Emitting Diodes") and now considered as an advantageous alternative to incandescent bulbs in terms of size, reduced electrical energy consumption, increased lifespan and freedom of style.

Ces diodes électroluminescentes sont implantées sur une carte à circuits imprimés désignée couramment sous l'acronyme anglais PCB (pour « Printed Circuit Board ») et intégrant un dispositif de commande.These light-emitting diodes are installed on a printed circuit board commonly referred to by the English acronym PCB (for “Printed Circuit Board”) and incorporating a control device.

De telles diodes ont toutefois pour inconvénient de présenter un grand angle d'éclairage, ce qui engendre une large diffusion et beaucoup de pertes dans une application visant à éclairer une zone éloignée.However, such diodes have the disadvantage of presenting a wide angle of illumination, which generates wide diffusion and a lot of losses in an application aimed at illuminating a remote area.

Aussi, il est connu de les associer à un élément optique (par exemple, un réflecteur ou un guide de lumière) apte à modifier le trajet des rayons lumineux issus de ces diodes.Also, it is known to associate them with an optical element (for example, a reflector or a light guide) capable of modifying the path of the light rays coming from these diodes.

La présence de ces systèmes optiques augmente considérablement le volume des modules lumineux assurant la fonction feu diurne de sorte que leur intégration dans les blocs d'éclairage et de signalisation avant s'avère souvent impossible.The presence of these optical systems considerably increases the volume of the light modules providing the daytime running light function so that their integration into the front lighting and signaling units often proves impossible.

Ces modules sont alors intégrés dans des blocs optiques spécifiques implantés dans la calandre et surplombant les blocs optiques d'éclairage et de signalisation avant.These modules are then integrated into specific optical units installed in the grille and overhanging the front lighting and signaling optical units.

Afin de limiter l'encombrement de la face avant du véhicule par une multitudes de blocs optiques, il est connu, d'intégrer dans un même module lumineux les fonctions feu diurne et feu indicateur de direction.In order to limit the size of the front face of the vehicle by a multitude of optical units, it is known to integrate in the same light module the daytime running light and direction indicator light functions.

Cette dernière fonction, mise en oeuvre de manière manuelle via un organe de commande pour signaler la volonté du conducteur de changer la direction du véhicule, doit également respecter une certaine couleur d'émission lumineuse (en l'occurrence, ambre ou jaune).This last function, implemented manually via a control member to signal the driver's desire to change the direction of the vehicle, must also respect a certain color of light emission (in this case, amber or yellow).

En outre, les exigences réglementaires imposent que les feux diurnes s'éteignent dès qu'un feu indicateur de direction est actionné par l'utilisateur de sorte à le rendre plus visible des autres usagers.In addition, the regulatory requirements require that the daytime running lights go out as soon as a direction indicator light is actuated by the user so as to make it more visible to other users.

La demande de brevet européenne EP 2 161 494 divulgue ainsi un module lumineux pour bloc optique de véhicule comportant une première série et une seconde série de diodes électroluminescentes émettant respectivement des rayons lumineux de couleur ambre et de couleur blanche.European patent application EP 2 161 494 thus discloses a light module for a vehicle headlight unit comprising a first series and a second series of light-emitting diodes respectively emitting amber-colored and white-colored light rays.

Les deux séries de diodes sont implantées sur un PCB en regard de la tranche arrière d'un corps transparent sensiblement plat d'un guide optique qui reçoit les rayons lumineux de couleurs différentes provenant desdites diodes et les guide vers sa tranche avant de sortie.The two series of diodes are installed on a PCB opposite the rear edge of a substantially flat transparent body of an optical guide which receives the light rays of different colors coming from said diodes and guides them towards its front output edge.

Lors du démarrage du véhicule, la seconde série de diodes à lumière blanche s'allume automatiquement de manière à assurer la fonction feu diurne. Dès lors que le conducteur actionne l'organe de commande traduisant sa volonté de changer la direction du véhicule, cette seconde série de diodes est automatiquement éteinte tandis que la première série de diodes à lumière ambre ou jaune s'allume de sorte à assurer la fonction d'indicateur de direction. EP 2 261 555 A1 divulgue un autre module lumineux connu de l'art antérieur.When the vehicle is started, the second series of white light diodes comes on automatically so as to ensure the fire function diurnal. As soon as the driver activates the control member reflecting his desire to change the direction of the vehicle, this second series of diodes is automatically extinguished while the first series of diodes with amber or yellow light lights up so as to ensure the function direction indicator. EP 2 261 555 A1 discloses another light module known from the prior art.

Toutefois, avec un tel module lumineux bi-fonction, la signature lumineuse des deux fonctions feu diurne et feu indicateur de direction s'avère parfaitement identique ce qui n'est pas avantageux d'un point de vue du style.However, with such a dual-function light module, the light signature of the two daytime running light and direction indicator light functions proves to be perfectly identical, which is not advantageous from a style point of view.

Exposé de l'inventionDisclosure of Invention

La présente invention vise donc à améliorer la situation.The present invention therefore aims to improve the situation.

Elle propose à cet effet un module lumineux pour bloc optique d'éclairage et/ou de signalisation de véhicule automobile, comportant une pluralité de sources lumineuses ponctuelles agencées sur au moins une plaque support et aptes à émettre des rayons lumineux de différentes couleurs pour assurer des fonctions photométriques différentes, ainsi qu'un élément optique apte à diriger le trajet des rayons lumineux issus desdites sources lumineuses vers un espace à illuminer ; ledit élément optique étant constitué par un réflecteur comprenant un premier et un second tronçons allongés réunis par un tronçon intermédiaire courbe, ledit module lumineux comportant une première plaque support s'étendant le long du bord interne dudit premier tronçon allongé et portant une première série de sources lumineuses ponctuelles aptes à émettre des rayons lumineux d'une première couleur en direction de ce premier tronçon allongé, ledit module lumineux comprenant en outre une seconde plaque support s'étendant le long du bord externe dudit second tronçon allongé et portant une seconde série de sources lumineuses ponctuelles aptes à émettre des rayons lumineux d'une seconde couleur en direction de ce second tronçon allongé, ladite première plaque support comprenant une extension se prolongeant au-delà dudit premier tronçon allongé jusqu'à ladite seconde plaque support de sorte à constituer un écran limitant ou empêchant les réflexions parasites de rayons lumineux issus de la seconde série de sources lumineuses ponctuelles sur ledit tronçon intermédiaire courbe et ledit premier tronçon allongé du réflecteur, l'extrémité libre de ladite extension de la première plaque support étant profilée de sorte à être jointive avec ladite seconde plaque support.To this end, it proposes a light module for a motor vehicle lighting and/or signaling optical unit, comprising a plurality of point light sources arranged on at least one support plate and capable of emitting light rays of different colors to ensure different photometric functions, as well as an optical element capable of directing the path of light rays from said light sources towards a space to be illuminated; said optical element being constituted by a reflector comprising first and second elongated sections joined by a curved intermediate section, said light module comprising a first support plate extending along the internal edge of said first elongated section and carrying a first series of sources spot lights capable of emitting light rays of a first color in the direction of this first elongated section, said light module further comprising a second support plate extending along the outer edge of said second elongated section and carrying a second series of sources spot lights capable of emitting light rays of a second color in the direction of this second elongated section, said first support plate comprising an extension extending beyond said first elongated section as far as said second support plate so as to constitute a screen limiting or preventing parasitic reflections of light rays from the s second set of sources point light on said curved intermediate section and said first elongated section of the reflector, the free end of said extension of the first support plate being profiled so as to be contiguous with said second support plate.

Tout en présentant un encombrement réduit et un coût de revient peu élevé du fait de sa conception relativement simple, le module lumineux selon l'invention permet d'assurer deux fonctions photométriques différentes (telles qu'en particulier les fonctions feu diurne et feu indicateur de changement de direction) présentant des signatures lumineuses distinctes et bien délimitées l'une de l'autre grâce à l'écran formé par l'extension prolongeant le premier tronçon.While having a reduced size and a low cost price due to its relatively simple design, the light module according to the invention makes it possible to perform two different photometric functions (such as in particular the daytime running light and change of direction) presenting light signatures that are distinct and well delimited from each other thanks to the screen formed by the extension extending the first section.

Selon des caractéristiques préférées dudit module lumineux selon l'invention, prises seules ou en combinaison :

  • ladite extension de la première plaque support porte une source lumineuse ponctuelle apte à émettre des rayons lumineux de ladite première couleur en direction dudit tronçon intermédiaire courbe du réflecteur ;
  • ladite seconde plaque support comprend également une extension se prolongeant au-delà dudit second tronçon allongé du réflecteur en regard dudit tronçon intermédiaire courbe de ce dernier, ladite extension de la seconde plaque support portant une source lumineuse ponctuelle apte à émettre des rayons lumineux de ladite première couleur en direction dudit tronçon intermédiaire courbe du réflecteur ;
  • ladite seconde série de sources lumineuses ponctuelles est également apte à émettre alternativement des rayons lumineux de ladite première couleur et de ladite seconde couleur en direction dudit second tronçon allongé ;
  • lesdites première et seconde plaques support sont blanches de manière à rediriger vers ledit réflecteur la très grande majorité des rayons lumineux réfléchis vers ces dernières par ce réflecteur ;
  • les premier et second tronçons allongés du réflecteur présentent chacun en section un profil parabolique ;
  • les sources lumineuses ponctuelles formant la première série de sources lumineuses ponctuelles sont alignées selon une direction parallèle à l'axe foyer dudit premier tronçon allongé, les sources lumineuses ponctuelles formant la seconde série de sources lumineuses ponctuelles étant alignées selon une direction parallèle à l'axe foyer dudit second tronçon allongé ; et/ou
  • lesdites sources lumineuses ponctuelles sont constituées par des diodes électroluminescentes ou laser.
According to preferred characteristics of said light module according to the invention, taken alone or in combination:
  • said extension of the first support plate carries a point light source capable of emitting light rays of said first color in the direction of said curved intermediate section of the reflector;
  • said second support plate also comprises an extension extending beyond said second elongated section of the reflector facing said intermediate curved section of the latter, said extension of the second support plate carrying a point light source capable of emitting light rays from said first color in the direction of said curved intermediate section of the reflector;
  • said second series of point light sources is also able to alternately emit light rays of said first color and of said second color in the direction of said second elongated section;
  • said first and second support plates are white so as to redirect towards said reflector the vast majority of the light rays reflected towards them by this reflector;
  • the first and second elongated sections of the reflector each have a parabolic profile in section;
  • the point light sources forming the first series of point light sources are aligned in a direction parallel to the focus axis of said first elongated section, the point light sources forming the second series of point light sources being aligned in a direction parallel to the axis focus of said second elongated section; and or
  • said point light sources consist of light-emitting diodes or lasers.

L'invention concerne également sous un second aspect, un bloc optique d'éclairage et/ou de signalisation de véhicule, caractérisé en ce qu'il comporte au moins un tel module lumineux.The invention also relates, in a second aspect, to an optical vehicle lighting and/or signaling unit, characterized in that it comprises at least one such light module.

Brève description des dessinsBrief description of the drawings

L'exposé de l'invention sera maintenant poursuivi par la description détaillée d'un exemple de réalisation, donnée ci-après à titre illustratif mais non limitatif, en référence aux dessins annexés, sur lesquels :

  • [Fig 1] est une vue en perspective d'un module lumineux selon l'invention destiné à être intégré dans un bloc optique d'éclairage et/ou de signalisation pour véhicule ;
  • [Fig 2] représente une vue de section prise selon un plan coupant transversalement le premier tronçon allongé du réflecteur du module de la figure 1 ; et
  • [Fig 3] représente une vue de section prise selon un plan coupant transversalement le second tronçon allongé du réflecteur du module de la figure 1.
The presentation of the invention will now be continued with the detailed description of an embodiment, given below by way of illustration but not limitation, with reference to the appended drawings, in which:
  • [ Fig 1 ] is a perspective view of a light module according to the invention intended to be integrated into an optical unit for lighting and/or signaling for a vehicle;
  • [ Fig 2 ] shows a sectional view taken along a plane cutting transversely the first elongated section of the reflector of the module of the figure 1 ; and
  • [ Fig.3 ] shows a sectional view taken along a plane cutting transversely the second elongated section of the reflector of the module of the figure 1 .

Description détailléedetailed description

La figure 1 représente un module lumineux 1 selon l'invention destiné à être intégré dans un bloc optique avant de signalisation de véhicule automobile pour assurer les fonctions feu diurne et feu indicateur de changement de direction.The figure 1 shows a light module 1 according to the invention intended to be integrated into a front optical unit for motor vehicle signaling to provide the daytime running light and direction change indicator light functions.

Le module lumineux 1 comporte deux plaques support 10, 20 portant chacun une pluralité de sources lumineuses ponctuelles, ainsi qu'un réflecteur 30 en forme de chevron apte à renvoyer les rayons lumineux émis par ces sources lumineuses vers un espace à illuminer.The light module 1 comprises two support plates 10, 20 each carrying a plurality of point light sources, as well as a reflector 30 in the shape of a chevron able to reflect the light rays emitted by these light sources towards a space to be illuminated.

Ce réflecteur 30 comprend un premier tronçon allongé 31 s'étendant selon une direction sensiblement horizontale, un second tronçon allongé 32 s'étendant selon une direction oblique formant un angle obtus d'environ 120° avec le premier tronçon 31, ainsi qu'un tronçon intermédiaire courbe 33 reliant les deux tronçons 31, 32 par deux de leurs extrémités.This reflector 30 comprises a first elongated section 31 extending in a substantially horizontal direction, a second elongated section 32 extending in an oblique direction forming an obtuse angle of approximately 120° with the first section 31, as well as a intermediate curve 33 connecting the two sections 31, 32 by two of their ends.

Tel qu'illustré sur les figures 2 et 3, les premier et second tronçons allongés 31, 32 présentent chacun en section un profil semblable de type parabolique.As shown on the figures 2 and 3 , the first and second elongated sections 31, 32 each have in section a similar profile of the parabolic type.

Le réflecteur 30 est obtenu de préférence par moulage à partir d'un matériau thermoplastique injecté tel que le polyéthylène ou le polypropylène, sa face fonctionnelle étant par la suite recouverte d'un revêtement réfléchissant aluminé.The reflector 30 is preferably obtained by molding from an injected thermoplastic material such as polyethylene or polypropylene, its functional face being subsequently covered with an aluminized reflective coating.

La première plaque support 10 est formée par une carte à circuits imprimés de type PCB (pour « Printed Circuit Board » en langue anglaise) s'étendant le long du bord interne du premier tronçon allongé horizontal 31 en y étant fixé rigidement.The first support plate 10 is formed by a printed circuit board of the PCB type (for "Printed Circuit Board" in English) extending along the inner edge of the first horizontal elongated section 31 while being fixed thereto rigidly.

Cette première plaque support 10 porte une série de cinq premières diodes électroluminescentes (LEDS) 40 aptes à émettre des rayons lumineux de couleur blanche.This first support plate 10 carries a series of five first light-emitting diodes (LEDS) 40 capable of emitting light rays of white color.

Les diodes 40 sont alignées selon une direction parallèle à l'axe foyer F1 (figure 2) du premier tronçon allongé 31 du réflecteur 30 et régulièrement espacées les unes de autres.The diodes 40 are aligned in a direction parallel to the focus axis F 1 ( figure 2 ) of the first elongated section 31 of the reflector 30 and regularly spaced from each other.

Elles présentent des axes d'émission orientés en direction de ce premier tronçon 31 de sorte que les rayons lumineux R1 issus de ces diodes 40 soient réfléchis par ce dernier vers l'espace à illuminer.They have emission axes oriented in the direction of this first section 31 so that the light rays R 1 issuing from these diodes 40 are reflected by the latter towards the space to be illuminated.

La seconde plaque support 20 est également formée par une carte à circuits imprimés de type PCB (pour « Printed Circuit Board » en langue anglaise) s'étendant le long du bord externe du second tronçon allongé oblique 32 en y étant fixé rigidement.The second support plate 20 is also formed by a printed circuit board of the PCB type (for "Printed Circuit Board" in English) extending along the outer edge of the second oblique elongated section 32 while being fixed thereto rigidly.

Cette seconde plaque support 10 porte une série de cinq secondes diodes électroluminescentes (LEDS) 50 aptes à émettre alternativement des rayons lumineux de couleur blanche et de couleur ambre.This second support plate 10 carries a series of five second light-emitting diodes (LEDS) 50 able to alternately emit light rays of white color and amber color.

Les diodes 50 sont alignées selon une direction parallèle à l'axe foyer F2 (figure 3) du second tronçon allongé 32 du réflecteur 30 et régulièrement espacées les unes de autres.Diodes 50 are aligned in a direction parallel to focus axis F 2 ( picture 3 ) of the second elongated section 32 of the reflector 30 and regularly spaced from each other.

Elles présentent des axes d'émission orientés en direction de ce second tronçon 32 de sorte que les rayons lumineux R2 issus de ces diodes 50 soient réfléchis par ce dernier vers l'espace à illuminer.They have emission axes oriented in the direction of this second section 32 so that the light rays R 2 issuing from these diodes 50 are reflected by the latter towards the space to be illuminated.

Tel qu'illustré par la figure 1, la première plaque support 10 comprend une extension 11 se prolongeant, au-delà du premier tronçon allongé horizontal 31 du réflecteur 30, jusqu'à la seconde plaque support 20, de sorte à constituer un écran limitant les réflexions parasites de rayons lumineux issus de la seconde série de diodes 50 sur le tronçon intermédiaire courbe 33 et le premier tronçon allongé horizontal 31.As illustrated by the figure 1 , the first support plate 10 comprises an extension 11 extending, beyond the first horizontal elongated section 31 of the reflector 30, as far as the second support plate 20, so as to constitute a screen limiting the parasitic reflections of light rays coming from the second series of diodes 50 on the curved intermediate section 33 and the first horizontal elongated section 31.

L'extrémité libre de cette extension 11 est avantageusement profilée de sorte à être jointive avec la seconde plaque support 20, de sorte qu'aucun rayon lumineux provenant des diodes 50 ne puisse passer entre les deux plaques support 10, 20.The free end of this extension 11 is advantageously profiled so as to be contiguous with the second support plate 20, so that no light ray coming from the diodes 50 can pass between the two support plates 10, 20.

Cette extension 11 de la plaque support 10 porte une diode électroluminescente 60, alignée avec les premières diodes 40, et apte à émettre des rayons lumineux de couleur identique (i.e. blanche) à celle des rayons émis par ces premières diodes 40.This extension 11 of the support plate 10 carries a light-emitting diode 60, aligned with the first diodes 40, and capable of emitting light rays of identical color (i.e. white) to that of the rays emitted by these first diodes 40.

La diode 60 présente un axe d'émission orienté en direction du tronçon intermédiaire courbe 33 de sorte que les rayons lumineux issus de cette diode soient réfléchis par ce dernier vers l'espace à illuminer.The diode 60 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.

Comme on peut le voir sur la figure 1, la seconde plaque support 20 comprend également une extension 21 se prolongeant, au-delà du second tronçon allongé oblique 32 du réflecteur 30, en regard du tronçon intermédiaire courbe 33.As can be seen on the figure 1 , the second support plate 20 also comprises an extension 21 extending beyond the second oblique elongated section 32 of the reflector 30, opposite the curved intermediate section 33.

Cette extension 21 de la plaque support 20 porte une diode électroluminescente 70, alignée avec les secondes diodes 50, et apte à émettre des rayons lumineux de couleur identique (i.e. blanche) à celle des rayons émis par les premières diodes 40.This extension 21 of the support plate 20 carries a light-emitting diode 70, aligned with the second diodes 50, and capable of emitting light rays of identical color (ie white) to that of the rays emitted by the first diodes 40.

La diode 70 présente un axe d'émission orienté en direction du tronçon intermédiaire courbe 33 de sorte que les rayons lumineux issus de cette diode soient réfléchis par ce dernier vers l'espace à illuminer.The diode 70 has an emission axis oriented in the direction of the curved intermediate section 33 so that the light rays coming from this diode are reflected by the latter towards the space to be illuminated.

Les deux plaques support 10, 20 sont avantageusement de couleur blanche de manière à rediriger vers le réflecteur 30 la très grande majorité des rayons lumineux réfléchis vers ces dernières par ce réflecteur 30, et à éviter ainsi la vision de zones d'ombre par un observateur externe regardant le module lumineux 1.The two support plates 10, 20 are advantageously white in color so as to redirect towards the reflector 30 the vast majority of the light rays reflected towards the latter by this reflector 30, and thus to avoid the vision of shadow zones by an observer. external looking light module 1.

Ces plaques support 10, 20 sont également reliées à un dispositif de commande non représenté et apte à gérer l'allumage et l'extinction des diodes lumineuses 40, 50, 60 et 70.These support plates 10, 20 are also connected to a control device, not shown, capable of managing the switching on and off of the light diodes 40, 50, 60 and 70.

Lors du démarrage du véhicule, les diodes 40, 50 60 et 70 s'allument automatiquement en émettant des rayons lumineux blancs vers les trois tronçons 31, 32, 33 du réflecteur 30, de manière à assurer la fonction feu diurne.When the vehicle is started, the diodes 40, 50, 60 and 70 light up automatically by emitting white light rays towards the three sections 31, 32, 33 of the reflector 30, so as to ensure the daytime running light function.

Cette fonction présente ainsi une signature lumineuse continue en forme de chevron correspondant à la forme du réflecteur 30.This function thus has a continuous light signature in the shape of a chevron corresponding to the shape of the reflector 30.

La présence de deux diodes 60 et 70 dont les axes d'émission sont orientés vers ce tronçon intermédiaire 33 permet d'assurer une meilleure homogénéité de l'intensité lumineuse sur l'ensemble du réflecteur 30 (ce tronçon intermédiaire 33 serait en effet moins lumineux que les deux autres tronçons allongés 31, 32 si l'une de ces deux diodes était absente).The presence of two diodes 60 and 70 whose emission axes are oriented towards this intermediate section 33 makes it possible to ensure better homogeneity of the light intensity over the whole of the reflector 30 (this intermediate section 33 would in fact be less luminous than the other two elongated sections 31, 32 if one of these two diodes was absent).

Dès lors que le conducteur actionne l'organe de commande traduisant sa volonté de changer la direction du véhicule, les diodes 40, 60 et 70 sont automatiquement éteintes tandis que la couleur des rayons lumineux émis par les diodes 50 en direction du seul second tronçon allongé oblique 32 passe du blanc à l'ambre, de sorte à assurer la fonction feu indicateur de changement direction.As soon as the driver activates the control member reflecting his desire to change the direction of the vehicle, the diodes 40, 60 and 70 are automatically extinguished while the color of the light rays emitted by the diodes 50 in the direction of the only second elongated section oblique 32 changes from white to amber, so as to provide the direction change indicator light function.

Cette fonction présente ainsi une signature lumineuse continue de forme allongée oblique correspondant à celle du second tronçon 32 du réflecteur 30.This function thus has a continuous light signature of oblique elongated shape corresponding to that of the second section 32 of the reflector 30.

La présence de l'écran formé par l'extension 11 de la première plaque support 10 permet de définir précisément l'extrémité inférieure de cette signature lumineuse (le tronçon intermédiaire 33 et le premier tronçon 31 du réflecteur 30 ne recevant alors aucun rayon lumineux ou quasiment) de sorte à obtenir un meilleur rendu visuel et à respecter la réglementation concernant la hauteur minimale de la fonction feu indicateur de changement direction (celle-ci devant se situer à au moins 350 mm du sol).The presence of the screen formed by the extension 11 of the first support plate 10 makes it possible to precisely define the lower end of this light signature (the intermediate section 33 and the first section 31 of the reflector 30 then receiving no or almost no light rays) so as to obtain a better visual rendering and to comply with the regulations concerning the minimum height of the direction change indicator light function (this must be at least 350 mm from the ground).

Selon des variantes de réalisation non représentées, les diodes électroluminescentes sont remplacées par d'autres sources lumineuses ponctuelles telles que des diodes laser.According to variant embodiments not shown, the light-emitting diodes are replaced by other point light sources such as laser diodes.

Selon d'autres variantes de réalisation non représentées, les diodes de la seconde série sont aptes à émettre seulement des rayons lumineux de couleur ambre.According to other variant embodiments not shown, the diodes of the second series are capable of emitting only light rays of amber color.

Selon encore d'autres variantes de réalisation, le nombre et/ou les couleurs d'émission des diodes formant la première et/ou la seconde séries de diodes sont différent (chacune de ces séries comprenant par exemple entre 4 et 10 diodes alignées).According to yet other variant embodiments, the number and/or the emission colors of the diodes forming the first and/or the second series of diodes are different (each of these series comprising for example between 4 and 10 aligned diodes).

Selon encore d'autres variantes de réalisation, l'angle entre les deux tronçons allongés du réflecteur est également différent et par exemple compris entre 90 et 130°.According to yet other variant embodiments, the angle between the two elongated sections of the reflector is also different and for example between 90 and 130°.

D'une manière générale, on rappelle que la présente invention ne se limite pas aux formes de réalisation décrites et représentées, mais englobe toute variante d'exécution à la portée de l'homme du métier.In general, it is recalled that the present invention is not limited to the embodiments described and represented, but encompasses any variant of execution within the reach of those skilled in the art.

Claims (9)

  1. A light module for a motor vehicle lighting and/or signalling unit, comprising a plurality of point light sources (40, 50, 60, 70) arranged on at least one support plate (10, 20) and capable of emitting light rays of different colors in order to perform different photometric functions, as well as an optical element (30) capable of directing the path of the light rays coming from said light sources (40, 50, 60, 70) towards a space to be illuminated; said optical element being constituted by a reflector (30) comprising a first and a second elongated section (31, 32) joined by a curved intermediate section (33), said light module comprising a first support plate (10) extending along the inner edge of said first elongated section (31) and carrying a first series of point light sources (40) capable of emitting light rays of a first color in the direction of this first elongated section (31) said light module further comprising a second support plate (20) extending along the outer edge of said second elongated section (32) and carrying a second series of point light sources (50) capable of emitting light rays of a second color in the direction of this second elongated section (32) said first support plate (10) comprising an extension (11) extending beyond said first elongated section (31) as far as said second support plate (20) so as to constitute a screen limiting or preventing the parasitic reflections of light rays coming from the second series of point light sources (50) on said curved intermediate section (33) and said first elongated section (31) of the reflector (30) characterized in that the free end of said extension (11) of the first support plate (10) is profiled so as to be joined to said second support plate (20).
  2. Light module according to claim 1, characterized in that said extension (11) of the first support plate (10) carries a point light source (60) able to emit light rays of said first color towards said curved intermediate section (33) of the reflector (30).
  3. Luminous module according to one of claims 1 or 2, characterized in that said second support plate (20) also comprises an extension (21) extending beyond said second elongated section (32) of the reflector (30) opposite said curved intermediate section (33) of the latter, said extension (21) of the second support plate (20) carrying a point light source (70) capable of emitting light rays of said first color in the direction of said curved intermediate section (33) of the reflector (30).
  4. Luminous module according to one of the claims 1 to 3, characterized in that said second series of point light sources (50) is able to alternately emit light rays of said first color and of said second color in the direction of said second elongated section (32).
  5. Light module according to one of claims 1 to 4, characterized in that said first and second support plates (10, 20) are white so as to redirect towards said reflector (30) the vast majority of the light rays reflected towards them by this reflector.
  6. Light module according to one of claims 1 to 5, characterized in that the first and second elongated sections (31, 32) of the reflector (30) each have a parabolic profile in section.
  7. Luminous module according to claim 6, characterized in that the point light sources (40) forming the first series of point light sources are aligned in a direction parallel to the focal axis (F1) of said first elongated section (31), the point light sources (50) forming the second series of point light sources being aligned in a direction parallel to the focal axis (F2) of said second elongated section (32).
  8. Light module according to one of claims 1 to 7, characterized in that said point light sources are constituted by light-emitting diodes or lasers (40, 50, 60, 70).
  9. Vehicle lighting and/or signalling optical unit, characterized in that it comprises at least one light module according to one of claims 1 to 8.
EP19795610.5A 2018-10-19 2019-10-01 Light module providing two photometric functions having distinct light signatures Active EP3867563B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1871223A FR3087520B1 (en) 2018-10-19 2018-10-19 LIGHT MODULE ENSURING TWO PHOTOMETRIC FUNCTIONS PRESENTING SEPARATE LIGHT SIGNATURES
PCT/FR2019/052313 WO2020079341A1 (en) 2018-10-19 2019-10-01 Light module providing two photometric functions having distinct light signatures

Publications (2)

Publication Number Publication Date
EP3867563A1 EP3867563A1 (en) 2021-08-25
EP3867563B1 true EP3867563B1 (en) 2022-08-31

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EP19795610.5A Active EP3867563B1 (en) 2018-10-19 2019-10-01 Light module providing two photometric functions having distinct light signatures

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EP (1) EP3867563B1 (en)
CN (1) CN112912665B (en)
ES (1) ES2927615T3 (en)
FR (1) FR3087520B1 (en)
WO (1) WO2020079341A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005028250A1 (en) * 2003-09-22 2005-03-31 Decoma International Inc. Vehicular light assembly
US8313223B2 (en) * 2008-03-06 2012-11-20 Honda Motor Co., Ltd. Taillight apparatus
EP2161494B2 (en) 2008-09-05 2020-04-29 HELLA GmbH & Co. KGaA Lighting device for a motor vehicle
FR2959973B1 (en) * 2010-05-12 2013-03-22 Valeo Vision OPTICAL DEVICE, IN PARTICULAR FOR MOTOR VEHICLE
CN108027127B (en) * 2015-09-14 2021-01-12 株式会社小糸制作所 Vehicle lamp
CN109690176B (en) * 2016-09-13 2021-07-09 本田技研工业株式会社 Head lamp device

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WO2020079341A1 (en) 2020-04-23
FR3087520B1 (en) 2021-04-09
EP3867563A1 (en) 2021-08-25
FR3087520A1 (en) 2020-04-24
ES2927615T3 (en) 2022-11-08
CN112912665A (en) 2021-06-04
CN112912665B (en) 2023-04-25

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