EP2570716A1 - Vorrichtung zur Beleuchtung und/oder Signalisierung für Kraftfahrzeug - Google Patents

Vorrichtung zur Beleuchtung und/oder Signalisierung für Kraftfahrzeug Download PDF

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Publication number
EP2570716A1
EP2570716A1 EP12183948A EP12183948A EP2570716A1 EP 2570716 A1 EP2570716 A1 EP 2570716A1 EP 12183948 A EP12183948 A EP 12183948A EP 12183948 A EP12183948 A EP 12183948A EP 2570716 A1 EP2570716 A1 EP 2570716A1
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EP
European Patent Office
Prior art keywords
light beam
optical
screen
light
modules
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP12183948A
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German (de)
French (fr)
Other versions
EP2570716B1 (en
Inventor
Jonathan Blandin
Jean-Luc Meyrenaud
Eric Mornet
Antoine De Lamberterie
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Publication date
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Publication of EP2570716A1 publication Critical patent/EP2570716A1/en
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Publication of EP2570716B1 publication Critical patent/EP2570716B1/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
    • F21S41/19—Attachment of light sources or lamp holders
    • F21S41/192—Details of lamp holders, terminals or connectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • 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
    • F21S41/39—Attachment thereof

Definitions

  • the present invention relates to a lighting and / or signaling device.
  • such a lighting and / or signaling device may be in the form of a motor vehicle light projector, for the purpose of producing for example a coded beam.
  • a lighting and signaling device may be in the form of a motor vehicle light projector, for the purpose of producing for example a coded beam.
  • it is essential that the projection on the road of the light beam generated by the lighting and signaling device does not exceed a predetermined limit, to avoid dazzling a motorist arriving in front .
  • a lighting and / or signaling device arranged to produce a light beam having a cutoff, namely the transition between a zone illuminated by the beam and a zone not illuminated by said beam, is already known, these zones being arranged on the one hand. and other of the cut.
  • the optical modules each formed of at least one light source, are arranged relative to one another so that, in projection on a screen perpendicular to said optical axis, the light beams that they generate are at least partially superimposed.
  • the optical modules are all housed in the same lighthouse. However, there is no mention of the joining of these modules to each other, in particular the attachment of these modules. However, if the optical modules are joined to separate media, it appears adjustment problems due to the lack of common reference between said modules, which, on the one hand, creates a risk of inadequate superposition of light beams, and on the other hand, requires additional adjustment steps, and therefore a manufacturing overhead.
  • the object of the present invention is therefore to limit the manufacturing costs of such a lighting and / or signaling device.
  • the optical modules can be directly aligned via their common support, designed so that the adjustment of the optical modules is done simply by fixing said modules on said support.
  • Such a medium then forms a common reference for the optical modules. It follows that the invention makes it possible to avoid the use of particularly expensive additional adjustment steps.
  • the support is formed by a rigid or flexible substrate carrying at least two electrically conductive tracks.
  • At least one light source of each optical module is placed, for example solidarized, on the substrate, this light source being electrically connected to the conductive tracks.
  • the substrate carries a plurality of electronic components, at least some of which are dedicated to the ignition and / or extinguishing of the light source.
  • such a substrate is an isolated metal substrate.
  • such a light source is a light emitting diode.
  • the optical modules are arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the cut line of the first light beam and one of the branches of the edge of cutting of the second light beam are parallel to a horizontal axis of said screen.
  • the optical modules can be arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the branch of the cutting edge of the second light beam parallel to the axis horizontal of said screen is located above the cutoff line of the first light beam.
  • Such a structure is advantageous because it avoids any need to adjust one beam relative to the other.
  • the current lighting standard for the beam code, and the settings that they imply, need only be respected by one of the beams, the first light beam being voluntarily fixed so as to project its cutoff line just below the cutoff edge of the second light beam.
  • the first beam improves the lighting very clearly without requiring a very fine adjustment, complying with the aforementioned standard.
  • the optical modules can be arranged relative to one another so that, in projection on a screen perpendicular to the optical axis, the fuzzy cut line of the first light beam is included in the second light beam.
  • the optical modules can be arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the cut line of the first light beam is located below the branch. the cutting edge of the second light beam parallel to the horizontal axis at an angle between 0.3 ° and 0.6 °.
  • the device comprises at least two optical modules capable of generating the first light beam and at least two optical modules capable of generating the second light beam.
  • At least three of the optical modules - or all the optical modules - can be aligned. Such an alignment being recognizable in that the light sources of these modules extend in a rectilinear direction.
  • the two branches of the cutting edge of the second light beam form between them an angle of between 8 ° and 15 °.
  • the cutoff of at least one light beam is sharp or fuzzy.
  • the support is plane. This is for example the case of a printed circuit board, in particular type FR4.
  • the support can therefore be formed by a printed circuit supporting at least one electronic component.
  • a cooling device in contact with the support, said device forming in particular a mechanical reinforcement for the support.
  • Each optical module may comprise at least one light source, in particular in the form of a light-emitting diode, all said light sources being arranged on the same side of the support.
  • the first optical module and / or the second optical module comprises a mirror or reflector having a complex surface configured to collect light from a light source and to produce the light beam having its line forward. or cut-off edge required.
  • the figure 1 shows the projection of the first light beam 4 and the second light beam 6 on a screen perpendicular to an optical axis and placed in front of a lighting and / or signaling device according to the invention.
  • the projection of the first light beam 4 generated by at least a first optical module has a large extent in a horizontal axis X-X '.
  • This first light beam 4 is also located under this horizontal axis X-X '.
  • An upper line of this beam is called cut line 4.1 and it is found that it is flat and parallel to the horizontal axis X-X ', while being located below this horizontal axis X-X'.
  • this cut line can be sharp, that is to say frank between the illuminated area and the unlit area.
  • this cut line 4.1 can be blurred, the illuminated area decreasing gradually as one enters the unlit area.
  • the figure 1 also shows a projection on the same screen of a second light beam 6.
  • This second light beam 6 is formed by a second optical module installed in the lighting and / or signaling device, on a support common to the first optical module.
  • the projection of the second light beam 6 has a smaller extent than that of the first light beam 4, as well as a V-shaped cutting edge.
  • This cutting edge comprises a first leg 6.1, situated on one side of the optical axis. ZZ 'and parallel to the horizontal axis X-X'.
  • This cutoff edge further comprises a second branch 6.2, on the other side of the optical axis Z-Z ', which rises above the horizontal axis XX' by a non-zero angle ⁇ , by example between 8 ° and 15 °.
  • This second beam 6 is parallel on the horizontal axis X-X '.
  • the first light beam 4 and the second light beam 6 are superimposed to form a resulting light beam 50 formed by the combination of the first light beam 4 with the second light beam 6.
  • the function of the first light beam 4 is to provide a wide illumination and diffuse which improves the driver's vision of the road he uses with his motor vehicle.
  • the function of the second beam 6 is to fulfill the conditions required to comply with the standard in force for a code illumination.
  • the first and second optical modules are also arranged, relative to each other, so that in projection on the screen (X-X '; Y-Y') perpendicular to the optical axis Z-Z ', the cutoff line 4.1 of the first light beam 4 and one of the branches 6.1 of the cutoff edge of the second light beam are parallel to the horizontal axis XX 'of said screen.
  • the cutoff line 4.1 of the first light beam 4 is below the cutoff edge 6.1 of the second light beam 6, a distance referenced 73 separating this cutoff line and this cutoff edge.
  • This distance 73 results from the choice of inclining the first light beam 4 downwards according to a angle between 0.3 ° and 0.6 ° with respect to a plane which by the light source generating the second light beam 6 and the cutting edge 6.1.
  • the lighting and / or signaling device which receives these two optical modules assembled on the same support thus makes it possible to generate the resulting light beam 50 of the code type, and can therefore easily be incorporated in a headlight of a motor vehicle.
  • a first embodiment of a lighting and / or signaling device 1, represented on the figure 2 is intended to equip the motor vehicle. It has an optical axis ZZ 'and comprises a set of four optical modules 2, 2', 3 and 3 ', of which two first optical modules 2 and 2' are capable of generating the first plane-cut light beam and two second optical modules 3 and 3 'are capable of generating the second "V" cut-off light beam, that is to say forming a non-zero angle, for example equal to a value between 8 ° and 15 °.
  • These four optical modules 2, 2 ', 3 and 3' are all aligned along an axis X-X ', and all have optical axes coinciding with the axis ZZ'.
  • each optical module 2, 2 ', 3 and 3' comprises a light source 51 which takes the form of one or more light-emitting diodes. These light sources 51 are aligned in a rectilinear direction coincident with the axis X-X '.
  • Each of these modules also comprises a reflector 52 of light with complex surfaces.
  • a reflector otherwise called mirror, forms a single piece which ensures the return and concentration of light rays on the road, while ensuring the cutoff line, for the first light beam, or the cutoff edge for the second light beam .
  • At least a first optical module 2 and a second optical module 3 are assembled or united on the same support 7.
  • the first two optical modules 2 and 2 'responsible for generating the first light beam and the two second modules 3 and 3 'optical responsible for generating the second light beam are united on the same support 7, the latter forming for example a rigid or flexible substrate.
  • Such a substrate provides a mechanical strength to the assembly formed by at least the first optical module and the second optical module.
  • the projection of the first light beam 4 generated by the first optical modules 2 and 2 ', on a screen (XX'; Y-Y ') perpendicular to the optical axis ZZ' of the lighting and / or signaling device 1, is represented on the figure 3 .
  • This first light beam 4 has a large extent, located under the horizontal axis X-X ', and the cut line 4.1 flat and parallel to said horizontal axis X-X'.
  • the optical modules 2 and 2 ' have an identical structure, which makes it possible to standardize their construction.
  • the figure 4 shows the projection of the resulting light beam 50 generated by the combination of the first optical module with the second optical module.
  • the first light beam 4 has a large extent under the horizontal axis X-X ', which makes it possible to provide a very wide illumination for the comfort of the driver of the motor vehicle.
  • This resulting light beam 50 also comprises a V-cut generated by the second light beam 6, the first leg 6.1 of which, on one side of the screen (XX ';Y-Y'), is parallel to the horizontal X-X ', and the second branch 6.2, located on the other side of said screen, rises above the horizontal axis XX' of a non-zero angle.
  • FIG. 5 A second embodiment of the lighting and / or signaling device 11, according to the present invention, is represented on the figure 5 .
  • This lighting and / or signaling device 11 comprises, in a manner similar to the device 1 described with reference to the Figures 2 to 4 , four optical modules 12, 12 ', 13 and 13' of substantially identical structure, these four modules however being distinct outside the support 17 which forms the structural element common to these four optical modules 12, 12 ', 13 and 13' .
  • the lens 55 is mechanically held by two arms 56 and 57 which are integral with the support 17.
  • the lighting and / or signaling device 11 also comprises a cooling device 18 in physical contact with the support 17.
  • a function of this cooling device 18 is to dissipate the calories generated by the light-emitting diodes forming at least one or more light sources.
  • This cooling device 18 is also intended to dissipate the calories generated by the electronic components that are mounted on the support 17, the latter then forming a printed circuit board.
  • this cooling device provides a third function which consists in reinforcing the holding mechanical support 17 to limit the mechanical stress experienced by the printed circuit board.
  • the support 17 comprises for this purpose a set of fixing portions 17.1, 17.2, 17.3 and 17.4 by which the optical modules 12, 12 ', 13 and 13' can be respectively fixed or secured to said support 17.
  • the support according to the invention is common to at least two optical modules and forms a unitary element, in other words monobloc. This support is for example made by a single molding operation from a plastic material, for example a resin.
  • the optical modules 12, 12 ', 13 and 13' are aligned through their common support 17, designed directly for the adjustment of their positions. It is therefore not necessary, in accordance with the present invention, to resort to additional steps of adjusting the modules, which are particularly expensive, since the reference, that is to say the common support, is identical for the optical modules. Furthermore, care will have been taken to position the first optical module on the support 17 so that the cutoff line of the first light beam is below the cutoff edge of the second light beam.
  • This figure 6 also illustrates the presence of the plurality of light sources 51 on the same support surface 17.
  • This figure 6 still shows the cooling device 18 which comprises a plane sector 58 on which the support 17 lies flat and a dispersion sector 59 comprising a plurality of fins 60 which extends in a plane perpendicular to the plane sector 58.
  • the projection of the first light beam 14 generated by the first optical modules 12 and 12 ', on a screen (XX'; Y-Y ') perpendicular to the optical axis ZZ' of the lighting and / or signaling device 11, is represented on the figure 7 .
  • This has a large extent, located under the horizontal axis X-X ', and a cut line 14.1 plane and parallel to said horizontal axis X-X'.
  • the projection of the second light beam 15, generated by the second optical modules 13 and 13 ', on this same screen (XX'; Y-Y '), has a smaller extent than that of the projection represented on the figure 7 , as well as a cutting edge in V.
  • This cutting edge comprises a first branch 15.1, located on one side of the screen with respect to the axis YY 'and parallel to the horizontal axis X-X', and a second branch 15.2, on the other side of the axis YY 'and rising above the horizontal axis XX' of a non-zero angle.
  • This resulting light beam 16 also comprises a V-cutoff edge generated by the second light beam 15, whose first branch 16.1, located on one side of the screen (XX ';Y-Y'), is parallel to the 'horizontal X-X', and the second branch 16.2, located on the other side of said screen, rises above the horizontal axis XX 'of a non-zero angle.
  • the lighting and / or signaling device 21 comprises only three optical modules 22, 22 'and 23, of constructions similar to the modules 12, 12', 13 and 13 'detailed in the second embodiment.
  • the first optical modules 22 and 22 ' are capable of generating the first light beam mentioned above, of large extent and whose projection on a screen perpendicular to the optical axis of the device 21 has a cut line plane, while the second optical module 23 is able to generate the second light beam, of reduced extent and whose projection on a screen perpendicular to the optical axis has a V-cut edge.
  • modules 22, 22 'and 23 are joined on a common support 27, the latter may be a rigid or flexible substrate constituting a printed circuit carrying electronic components.
  • the lighting and / or signaling device comprises the support 27 on which four light sources 51 are secured, each first optical module 22 and 22 'comprising a single light source while the second optical module 23 comprises two light sources 51.
  • Light sources 51 are advantageously made by light-emitting diodes.
  • This collector 61 is thus manufactured from the same molding step and has domes 62 ensuring reflection of the light beam at the right of each light source 51.
  • the support 27 is sandwiched between the collector 61 and a cooling device 28, these elements being connected together by a multiplicity of securing means 63, in particular screws.
  • the domes 62 are open towards the front and there is a folder 64 substantially to the right of these openings.
  • the lighting device and / or signaling 21 comprises only two folders 64, a first folder being common to the first two optical modules 22 and 22 'and a second folder being assigned to the second optical module 23.
  • These folders 64 each have a light ray reflection function while defining the cutoff line, for the first light beam, or the cutoff edge, for the second light beam.
  • the two folders although distinct vis-à-vis optical modules they equip, can be made in the form of a single piece that extends throughout the lighting device and / or signaling, that is to say opposite the first two optical modules 22 and 22 'and opposite the second optical module 23.
  • the lighting and / or signaling device 21 also comprises a focusing device 65 intended to focus the light beam that it receives from the collector 61.
  • the focusing device 65 is formed by a single piece used both for the first two optical modules 22 and 22 ', but also for the second optical module 23. Although made in one piece, this focusing device 65 comprises a first and only lens 66 dedicated to the pair of first optical modules 22 and 22 ', and a second lens 67 arranged facing the assembly consisting of the light source 51, the dome 62 and the folder 64 of the second optical module 23.
  • the figure 11 is a view of this third embodiment of the lighting and / or signaling device 21 devoid of the folders 64, the collector 61 and the focusing device 65.
  • This figure therefore shows the plane-to-plane arrangement of the support 27 on the device 28, the latter here having a general shape in a bowl in which extends cooling fins.
  • the cooling device 28 comprises at least a first centralizer 68 whose function is to characterize the position of the support 27 with respect to the cooling device 28.
  • the latter also comprises at least a second centralizer 69, in this example a pair of second centraliser 69, for centering the single collector 61 with respect to the support 27 via the cooling device 28.
  • the cooling device further comprises at least a third centralizer 70, here a pair of third centralizer 70, whose function is to guarantee the position of the folders 64 relative to the other components of the module concerned.
  • the Figures 12 and 13 represent a fourth embodiment of the lighting and / or signaling device 31 according to the present invention, comprising four optical modules 32, 32 ', 33 and 33' disposed on a common support 37, of planar shape.
  • Each of the first and second optical modules consists of a light source 51 advantageously formed by a light emitting diode.
  • a collector 61 which reflects the light rays emitted by the light source 51 towards a folder 64 whose function is identical to that used in the second and third embodiments.
  • Each of these optical modules finally comprises a reflector 71 whose function is to redirect the light rays having crossed the folder to form the first light beam or the second light beam.
  • the two collectors 61, the two folders 64 and the two reflectors 71 of the first two optical modules 32 and 32 ' form a single piece.
  • the latter is made from of the same molding step. It is the same for the pair of second optical modules 33 and 33 '.
  • the cooling device 38 comprises a wall 72 from which extends a plurality of cooling fins 60 in a plane perpendicular to the plane in which the wall 72 extends.
  • the support 27, for example a printed circuit board, is then in contact with the cooling device, for example by being pressed against a free face of the wall 72.
  • Figures 14 and 15 represent a fifth embodiment of the device 41 according to the present invention, comprising three optical modules referenced 42, 42 'and 43 and arranged on a common support 47, of planar shape.
  • This support 47 is secured to a cooling device 48 by a face opposite to that which receives the light sources 51, this face also receiving electronic components.
  • This fifth embodiment of the lighting and / or signaling device 41 is a combination of the first embodiment with the second embodiment.
  • the first optical module or modules 42 and 42 mainly comprise the light source 51 and a mirror or reflector 52 with complex surfaces secured to the face of the support 47 which receives the light source.
  • the first optical module or modules 42 and 42 'mainly comprise the light source 51 and a mirror or reflector 52 with complex surfaces secured to the face of the support 47 which receives the light source.
  • the second optical module 43 comprises an optical collector 53 which receives light from two light sources 51. This collector 53 sends this light to a folder 54 having at least one cutting edge in order to allow the passage of only a portion of the light. light beam from the collector optical 53 to produce the second light beam and its cutting edge. Finally, a lens 55 is arranged to focus the second light beam from the collector and project it on the road taken by the vehicle.
  • the figure 15 shows this fifth embodiment in the absence of the components of the optical modules.
  • the optical modules may advantageously be arranged so that in projection on a screen (XX '; Y-Y') perpendicular to the optical axis Z-Z ', the first branch of the V-cutoff edge of the second light beam, parallel to the horizontal axis X-X ', is located above the plane cutoff of the first light beam.
  • the optical modules are preferably arranged relative to one another so that, when projected onto the screen (XX '; Y-Y' ), the planar and fuzzy cutoff of the first light beam is included in the second light beam.
  • each optical module may for example comprise one or more light sources in the form of light emitting diodes, single-chip or multi-chip, all these diodes preferably being arranged on the same side of their common support.

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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)

Abstract

The device (11) has two optical modules (12, 12 ', 13, 13') respectively generating light beams having, in projection on a screen perpendicular to an optical axis, a plane cutting line and a cutting edge, where the cutting edge comprises two branches forming non-zero angle between the branches. The optical modules are arranged relative to one another such that the light beams are partially superimposed in projection on the screen. The optical modules assembled on a common support (17), where each module includes a light source (51) e.g. single-chip or multi-chip LED.

Description

La présente invention concerne un dispositif d'éclairage et/ou de signalisation.The present invention relates to a lighting and / or signaling device.

Quoique non exclusivement, un tel dispositif d'éclairage et/ou de signalisation peut se présenter sous la forme d'un projecteur lumineux de véhicule automobile, dans le but de produire par exemple un faisceau code. Pour une telle application, on comprendra qu'il est primordial que la projection sur la route du faisceau lumineux généré par le dispositif d'éclairage et de signalisation ne dépasse pas une limite prédéterminée, afin d'éviter d'éblouir un automobiliste arrivant en face.Although not exclusively, such a lighting and / or signaling device may be in the form of a motor vehicle light projector, for the purpose of producing for example a coded beam. For such an application, it will be understood that it is essential that the projection on the road of the light beam generated by the lighting and signaling device does not exceed a predetermined limit, to avoid dazzling a motorist arriving in front .

On connaît déjà un dispositif d'éclairage et/ou de signalisation agencé pour produire un faisceau lumineux qui présente une coupure, à savoir la transition entre une zone éclairée par le faisceau et une zone non éclairée par ledit faisceau, ces zones étant disposées de part et d'autre de la coupure.A lighting and / or signaling device arranged to produce a light beam having a cutoff, namely the transition between a zone illuminated by the beam and a zone not illuminated by said beam, is already known, these zones being arranged on the one hand. and other of the cut.

Lorsqu'il s'agit de produire un faisceau à coupure code en V, c'est-à-dire dont la coupure comporte deux branches faisant entre elles un angle non-nul, il peut être utilisé un dispositif d'éclairage et de signalisation conforme à celui décrit dans le document FR 2 844 033 . Ce dispositif décrit dans le document précité présente un axe optique et comprend :

  • un premier module optique apte à générer un premier faisceau lumineux présentant, en projection sur un écran perpendiculaire à l'axe optique, une coupure plane ; et
  • une deuxième module optique apte à générer un deuxième faisceau lumineux présentant, en projection sur un écran perpendiculaire à l'axe optique, une coupure comprenant deux branches formant entre elles un angle non-nul.
When it comes to producing a V-cut beam, that is to say whose cut has two branches forming between them a non-zero angle, it can be used a lighting and signaling device conform to that described in the document FR 2 844 033 . This device described in the aforementioned document has an optical axis and comprises:
  • a first optical module capable of generating a first light beam having, in projection on a screen perpendicular to the optical axis, a planar cut; and
  • a second optical module capable of generating a second light beam having, in projection on a screen perpendicular to the optical axis, a cutoff comprising two branches forming between them a non-zero angle.

De plus, dans ce dispositif, les modules optiques, chacun formé d'au moins une source lumineuse, sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire audit axe optique, les faisceaux lumineux qu'ils génèrent soient au moins partiellement superposés.Moreover, in this device, the optical modules, each formed of at least one light source, are arranged relative to one another so that, in projection on a screen perpendicular to said optical axis, the light beams that they generate are at least partially superimposed.

Le faisceau lumineux généré, issu de la superposition des deux faisceaux lumineux ci-dessus, présente ainsi, en projection sur l'écran mentionné ci-dessus :

  • une coupure code, grâce au premier faisceau lumineux, ce qui permet de ne pas éblouir un automobiliste arrivant en face ; et
  • un flux lumineux suffisamment intense dans la partie basse du faisceau, grâce au deuxième faisceau lumineux, ce qui assure un éclairage adéquat dans des conditions de conduite automobile.
The light beam generated, resulting from the superposition of the two light beams above, thus has, in projection on the screen mentioned above:
  • a cut code, thanks to the first light beam, which can not dazzle a motorist arriving in front; and
  • a sufficiently intense luminous flux in the lower part of the beam, thanks to the second light beam, which ensures adequate lighting in driving conditions.

Dans ce document, les modules optiques sont tous logés dans un même phare. Toutefois, il n'est pas fait état de la solidarisation de ces modules les uns aux autres, en particulier de la fixation de ces mêmes modules. Or, si les modules optiques sont joints à des supports distincts, il apparaît des problèmes de réglage dus à l'absence de référentiel commun entre lesdits modules, ce qui, d'une part, engendre un risque de superposition inadéquate des faisceaux lumineux, et, d'autre part, nécessite des étapes supplémentaires de réglage, et donc un surcoût de fabrication.In this document, the optical modules are all housed in the same lighthouse. However, there is no mention of the joining of these modules to each other, in particular the attachment of these modules. However, if the optical modules are joined to separate media, it appears adjustment problems due to the lack of common reference between said modules, which, on the one hand, creates a risk of inadequate superposition of light beams, and on the other hand, requires additional adjustment steps, and therefore a manufacturing overhead.

Ainsi, l'agencement des modules optiques proposé dans le document antérieur précité soulève des problèmes d'industrialisation et de compatibilité aux contraintes du secteur automobile, en particulier de compatibilité aux contraintes économiques inhérentes à ce secteur.Thus, the arrangement of the optical modules proposed in the aforementioned prior document raises problems of industrialization and compatibility with the constraints of the automotive sector, in particular compatibility with the economic constraints inherent in this sector.

L'objet de la présente invention est donc de limiter les coûts de fabrication d'un tel dispositif d'éclairage et/ou de signalisation.The object of the present invention is therefore to limit the manufacturing costs of such a lighting and / or signaling device.

L'invention a donc pour objet un dispositif d'éclairage et/ou de signalisation, notamment de véhicule automobile, qui présente un axe optique et qui comprend :

  • un premier module optique apte à générer un premier faisceau lumineux présentant, en projection sur un écran perpendiculaire à l'axe optique, une ligne de coupure plane, autrement dit rectiligne ; et
  • un deuxième module optique apte à générer un deuxième faisceau lumineux présentant, en projection sur un écran perpendiculaire à l'axe optique, un bord de coupure comprenant deux branches formant entre elles un angle non-nul, ci-après appelé coupure en V,
lesdits modules optiques étant agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire audit axe optique, lesdits faisceaux lumineux soient au moins partiellement superposés pour former un faisceau lumineux résultant, le dispositif d'éclairage et/ou de signalisation étant remarquable en ce que lesdits modules optiques sont réunis sur un même support.The subject of the invention is therefore a lighting and / or signaling device, in particular a motor vehicle, which has an optical axis and which comprises:
  • a first optical module capable of generating a first light beam having, in projection on a screen perpendicular to the optical axis, a flat cut line, in other words rectilinear; and
  • a second optical module capable of generating a second light beam having, in projection on a screen perpendicular to the optical axis, a cutoff edge comprising two branches forming between them a non-zero angle, hereinafter referred to as a V cut,
said optical modules being arranged with respect to each other so that, in projection on a screen perpendicular to said optical axis, said light beams are at least partially superimposed to form a resulting light beam, the lighting device and / or or signaling being remarkable in that said optical modules are united on the same support.

Ainsi, grâce à l'invention, les modules optiques peuvent être directement alignés par l'intermédiaire de leur support commun, conçu pour que le réglage des modules optiques se fasse simplement en fixant lesdits modules sur ledit support. Un tel support forme alors un référentiel commun aux modules optiques. Il s'ensuit que l'invention permet d'éviter le recours à des étapes supplémentaires de réglage particulièrement coûteuses.Thus, thanks to the invention, the optical modules can be directly aligned via their common support, designed so that the adjustment of the optical modules is done simply by fixing said modules on said support. Such a medium then forms a common reference for the optical modules. It follows that the invention makes it possible to avoid the use of particularly expensive additional adjustment steps.

Selon une caractéristique intéressante de l'invention, le support est formé par un substrat, rigide ou flexible, porteur d'au moins deux pistes électriquement conductrices.According to an advantageous characteristic of the invention, the support is formed by a rigid or flexible substrate carrying at least two electrically conductive tracks.

Avantageusement, au moins une source lumineuse de chaque module optique est posée, par exemple solidarisée, sur le substrat, cette source lumineuse étant raccordée électriquement aux pistes conductrices.Advantageously, at least one light source of each optical module is placed, for example solidarized, on the substrate, this light source being electrically connected to the conductive tracks.

Selon une amélioration de l'invention, le substrat est porteur d'une pluralité de composants électroniques, dont certains au moins sont dédiés à l'allumage et/ou à l'extinction de la source lumineuse.According to an improvement of the invention, the substrate carries a plurality of electronic components, at least some of which are dedicated to the ignition and / or extinguishing of the light source.

Avantageusement, un tel substrat est un substrat métallique isolé.Advantageously, such a substrate is an isolated metal substrate.

Selon un exemple de réalisation, une telle source lumineuse est une diode électroluminescente.According to an exemplary embodiment, such a light source is a light emitting diode.

De préférence, les modules optiques sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire à l'axe optique, la ligne de coupure du premier faisceau lumineux et l'une des branches du bord de coupure du deuxième faisceau lumineux sont parallèles à un axe horizontal dudit écran.Preferably, the optical modules are arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the cut line of the first light beam and one of the branches of the edge of cutting of the second light beam are parallel to a horizontal axis of said screen.

Dans ce cas, les modules optiques peuvent être agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire à l'axe optique, la branche du bord de coupure du deuxième faisceau lumineux parallèle à l'axe horizontal dudit écran est située au-dessus de la ligne de coupure du premier faisceau lumineux. Une telle structure est avantageuse car elle évite toute nécessité de réglage d'un faisceau par rapport à l'autre. En effet, la norme d'éclairage en vigueur pour le faisceau code, et les réglages qu'elles impliquent, n'ont besoin d'être respectés que par l'un des faisceaux, le premier faisceau lumineux étant volontairement fixé de manière à projeter sa ligne de coupure juste en dessous du bord de coupure du deuxième faisceau lumineux. Ainsi, le premier faisceau améliore très nettement l'éclairage sans pour autant nécessiter un réglage très fin, conforme à la norme précitée.In this case, the optical modules can be arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the branch of the cutting edge of the second light beam parallel to the axis horizontal of said screen is located above the cutoff line of the first light beam. Such a structure is advantageous because it avoids any need to adjust one beam relative to the other. Indeed, the current lighting standard for the beam code, and the settings that they imply, need only be respected by one of the beams, the first light beam being voluntarily fixed so as to project its cutoff line just below the cutoff edge of the second light beam. Thus, the first beam improves the lighting very clearly without requiring a very fine adjustment, complying with the aforementioned standard.

Dans le cas où la coupure du premier faisceau lumineux est floue, les modules optiques peuvent être agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire à l'axe optique, la ligne de coupure floue du premier faisceau lumineux est comprise dans le deuxième faisceau lumineux.In the case where the cutoff of the first light beam is blurred, the optical modules can be arranged relative to one another so that, in projection on a screen perpendicular to the optical axis, the fuzzy cut line of the first light beam is included in the second light beam.

De plus, les modules optiques peuvent être agencés l'un par rapport à l'autre de sorte que, en projection sur un écran perpendiculaire à l'axe optique, la ligne de coupure du premier faisceau lumineux est située au-dessous de la branche du bord de coupure du deuxième faisceau lumineux parallèle à l'axe horizontal selon un angle compris entre 0,3° et 0,6°.In addition, the optical modules can be arranged relative to each other so that, in projection on a screen perpendicular to the optical axis, the cut line of the first light beam is located below the branch. the cutting edge of the second light beam parallel to the horizontal axis at an angle between 0.3 ° and 0.6 °.

Selon un mode particulier de réalisation du dispositif selon l'invention, celui-ci comprend au moins deux modules optiques aptes à générer le premier faisceau lumineux et au moins deux modules optiques aptes à générer le deuxième faisceau lumineux.According to a particular embodiment of the device according to the invention, it comprises at least two optical modules capable of generating the first light beam and at least two optical modules capable of generating the second light beam.

Dans ce cas, au moins trois des modules optiques - ou encore tous les modules optiques - peuvent être alignés. Un tel alignement étant reconnaissable en ce que les sources lumineuses de ces modules s'étendent selon une direction rectiligne.In this case, at least three of the optical modules - or all the optical modules - can be aligned. Such an alignment being recognizable in that the light sources of these modules extend in a rectilinear direction.

De préférence, les deux branches du bord de coupure du deuxième faisceau lumineux forment entre elles un angle compris entre 8° et 15°.Preferably, the two branches of the cutting edge of the second light beam form between them an angle of between 8 ° and 15 °.

Dans un mode de réalisation particulier de l'invention, la coupure d'au moins un faisceau lumineux est nette ou floue.In a particular embodiment of the invention, the cutoff of at least one light beam is sharp or fuzzy.

Dans un autre mode de réalisation avantageux, le support est plan. C'est par exemple le cas d'une carte de circuit imprimé, notamment de type FR4.In another advantageous embodiment, the support is plane. This is for example the case of a printed circuit board, in particular type FR4.

Le support peut donc être formé par un circuit imprimé supportant au moins un composant électronique.The support can therefore be formed by a printed circuit supporting at least one electronic component.

Selon une caractéristique du dispositif selon l'invention, il est prévu un dispositif de refroidissement en contact avec le support, ledit dispositif formant notamment un renfort mécanique pour le support.According to a feature of the device according to the invention, there is provided a cooling device in contact with the support, said device forming in particular a mechanical reinforcement for the support.

Chaque module optique peut comprendre au moins une source lumineuse, notamment sous forme de diode électroluminescente, toutes lesdites sources lumineuses étant disposées d'un même côté du support.Each optical module may comprise at least one light source, in particular in the form of a light-emitting diode, all said light sources being arranged on the same side of the support.

Selon un premier mode de réalisation, le premier module optique et/ou le deuxième module optique comprend un miroir ou réflecteur présentant une surface complexe configurée pour collecter la lumière issue d'une source lumineuse et produire vers l'avant le faisceau lumineux présentant sa ligne ou bord de coupure requis.According to a first embodiment, the first optical module and / or the second optical module comprises a mirror or reflector having a complex surface configured to collect light from a light source and to produce the light beam having its line forward. or cut-off edge required.

Selon un deuxième mode de réalisation, le premier module optique et/ou le deuxième module optique comprend :

  • un collecteur optique agencé pour collecter la lumière issue d'une source lumineuse,
  • une plieuse présentant au moins une arête de coupure en vue d'autoriser le passage de seulement une partie du faisceau provenant du collecteur optique et de produire ainsi le faisceau lumineux correspondant et sa coupure, une telle plieuse pouvant également par exemple comprendre une surface réfléchissante, et
  • une lentille agencée pour focaliser le faisceau lumineux provenant du collecteur optique.
According to a second embodiment, the first optical module and / or the second optical module comprises:
  • an optical collector arranged to collect light from a light source,
  • a folder having at least one cutting edge in order to allow the passage of only a portion of the beam from the optical collector and thus produce the corresponding light beam and its cut, such a folder may also for example include a reflective surface, and
  • a lens arranged to focus the light beam from the optical collector.

Selon un troisième mode de réalisation, le premier module optique et/ou le deuxième module optique comprend :

  • un dôme agencé pour collecter la lumière issue d'une source lumineuse, chaque dôme étant rassemblé en une pièce unique formant un collecteur,
  • une plieuse présentant une arête de coupure en vue de laisser passer seulement une partie du faisceau provenant du dôme et de projeter ainsi vers l'avant le faisceau lumineux correspondant,
  • un dispositif de focalisation agencé pour focaliser vers l'avant le faisceau provenant du collecteur, ledit dispositif de focalisation étant formé d'une unique pièce qui comprend une pluralité de lentilles.
According to a third embodiment, the first optical module and / or the second optical module comprises:
  • a dome arranged to collect the light from a light source, each dome being collected in a single piece forming a collector,
  • a folder having a cutting edge for passing only a portion of the beam from the dome and thereby projecting the corresponding light beam forward,
  • a focusing device arranged to focus the beam coming from the collector forward, said focusing device being formed of a single piece which comprises a plurality of lenses.

Selon un quatrième mode de réalisation, le premier module optique et/ou le deuxième module optique comprend :

  • un collecteur agencé pour collecter la lumière issue d'une source lumineuse,
  • une plieuse présentant une arête de coupure en vue de laisser passer seulement une partie du faisceau provenant du collecteur et de projeter ainsi vers l'avant le faisceau lumineux correspondant,
  • un réflecteur agencé pour renvoyer vers l'avant du véhicule le faisceau provenant du collecteur, ledit collecteur, ladite plieuse et ledit réflecteur étant formés d'une seule pièce.
According to a fourth embodiment, the first optical module and / or the second optical module comprises:
  • a collector arranged to collect light from a light source,
  • a folder having a cutting edge for passing only a portion of the beam from the collector and thereby projecting the corresponding light beam forward,
  • a reflector arranged to return to the front of the vehicle the beam from the collector, said collector, said folder and said reflector being formed in one piece.

Selon un cinquième mode de réalisation, le premier module optique comprend un miroir ou réflecteur présentant une surface complexe configurée pour collecter la lumière issue d'une source lumineuse et produire vers l'avant le faisceau lumineux correspondant présentant sa ligne de coupure requise alors que le deuxième module optique comprend :

  • un collecteur optique agencé pour collecter la lumière issue d'une source lumineuse,
  • une plieuse présentant au moins un bord de coupure en vue d'autoriser le passage de seulement une partie du faisceau provenant du collecteur optique et de produire ainsi le faisceau lumineux correspondant et sa coupure, une telle plieuse pouvant également par exemple comprendre une surface réfléchissante, et
  • une lentille agencée pour focaliser le faisceau lumineux provenant du collecteur.
According to a fifth embodiment, the first optical module comprises a mirror or reflector having a complex surface configured to collect light from a light source and to produce the corresponding light beam with its required cutoff line forwards while the second optical module comprises:
  • an optical collector arranged to collect light from a light source,
  • a folder having at least one cutoff edge for permitting the passage of only a portion of the beam from the optical pickup and thereby producing the corresponding light beam and its cut, a such folder may also for example include a reflective surface, and
  • a lens arranged to focus the light beam from the collector.

Au moins un module optique peut comprendre au moins une source lumineuse sous forme de diode électroluminescente à mono-puce ou à multi-puces.

  • Les figures du dessin annexé feront bien comprendre comment l'invention peut être réalisée. Sur ces figures, des références identiques désignent des éléments techniques semblables.
  • La figure 1 est une vue schématique d'une projection sur un écran perpendiculaire à un axe optique d'un faisceau lumineux résultant de la combinaison du premier faisceau lumineux superposé avec le deuxième faisceau lumineux.
  • La figure 2 est une vue schématique en perspective d'un premier mode de réalisation d'un dispositif d'éclairage et/ou de signalisation à quatre modules optiques.
  • La figure 3 est un schéma représentant la projection, sur un écran perpendiculaire à l'axe optique, du faisceau lumineux à ligne de coupure plane, généré par deux des modules optiques du dispositif de la figure 2.
  • La figure 4 est un schéma représentant la projection, sur un écran perpendiculaire à l'axe optique, du faisceau lumineux résultant généré par l'ensemble des modules optiques du dispositif de la figure 2.
  • La figure 5 est une vue en perspective d'un dispositif d'éclairage et/ou de signalisation à quatre modules optiques, selon un deuxième mode de réalisation de la présente invention.
  • La figure 6 est une vue en perspective du support de l'ensemble des modules optiques du dispositif de la figure 5.
  • La figure 7 est un schéma représentant la projection, sur un écran perpendiculaire à l'axe optique, du faisceau lumineux à coupure plane généré par l'ensemble de deux des quatre modules optiques du dispositif de la figure 5.
  • La figure 8 est un schéma représentant la projection, sur un écran perpendiculaire à l'axe optique, du faisceau lumineux à coupure inclinée généré par l'ensemble de deux des quatre modules optiques du dispositif de la figure 5.
  • La figure 9 est un schéma représentant la projection, sur un écran perpendiculaire à l'axe optique, du faisceau lumineux résultant généré par l'ensemble des modules optiques du dispositif de la figure 5.
  • La figure 10 est une vue en perspective d'un dispositif d'éclairage et/ou de signalisation à trois modules optiques, selon un troisième mode de réalisation de la présente invention.
  • La figure 11 est une vue en perspective du support de l'ensemble des modules optiques du dispositif de la figure 10.
  • La figure 12 est une vue en perspective d'un dispositif d'éclairage et/ou de signalisation à quatre modules optiques, selon un quatrième mode de réalisation de la présente invention.
  • La figure 13 est une vue en perspective du support de l'ensemble des modules optiques du dispositif de la figure 12.
  • La figure 14 est une vue en perspective d'un dispositif d'éclairage et/ou de signalisation à trois modules optiques, selon un cinquième mode de réalisation de la présente invention.
  • La figure 15 est une vue en perspective du support de l'ensemble des modules optiques du dispositif de la figure 14.
At least one optical module may comprise at least one light source in the form of a single-chip or multi-chip light-emitting diode.
  • The figures of the appended drawing will make it clear how the invention can be realized. In these figures, identical references designate similar technical elements.
  • The figure 1 is a schematic view of a projection on a screen perpendicular to an optical axis of a light beam resulting from the combination of the first superimposed light beam with the second light beam.
  • The figure 2 is a schematic perspective view of a first embodiment of a lighting and / or signaling device with four optical modules.
  • The figure 3 is a diagram showing the projection, on a screen perpendicular to the optical axis, of the plane cutoff light beam, generated by two of the optical modules of the device of the figure 2 .
  • The figure 4 is a diagram showing the projection, on a screen perpendicular to the optical axis, of the resulting light beam generated by all the optical modules of the device of the figure 2 .
  • The figure 5 is a perspective view of a lighting and / or signaling device with four optical modules, according to a second embodiment of the present invention.
  • The figure 6 is a perspective view of the support of all the optical modules of the device of the figure 5 .
  • The figure 7 is a diagram showing the projection, on a screen perpendicular to the optical axis, of the plane-cut light beam generated by the set of two of the four optical modules of the device of the figure 5 .
  • The figure 8 is a diagram showing the projection, on a screen perpendicular to the optical axis, of the inclined cut-off light beam generated by the set of two of the four optical modules of the device of the figure 5 .
  • The figure 9 is a diagram showing the projection, on a screen perpendicular to the optical axis, of the resulting light beam generated by all the optical modules of the device of the figure 5 .
  • The figure 10 is a perspective view of a lighting and / or signaling device with three optical modules, according to a third embodiment of the present invention.
  • The figure 11 is a perspective view of the support of all the optical modules of the device of the figure 10 .
  • The figure 12 is a perspective view of a lighting and / or signaling device with four optical modules, according to a fourth embodiment of the present invention.
  • The figure 13 is a perspective view of the support of all the optical modules of the device of the figure 12 .
  • The figure 14 is a perspective view of a lighting and / or signaling device with three optical modules, according to a fifth embodiment of the present invention.
  • The figure 15 is a perspective view of the support of all the optical modules of the device of the figure 14 .

La figure 1 montre la projection du premier faisceau lumineux 4 et du deuxième faisceau lumineux 6 sur un écran perpendiculaire à un axe optique et placé en face d'un dispositif d'éclairage et/ou de signalisation selon l'invention.The figure 1 shows the projection of the first light beam 4 and the second light beam 6 on a screen perpendicular to an optical axis and placed in front of a lighting and / or signaling device according to the invention.

La projection du premier faisceau lumineux 4 généré par au moins un premier module optique présente une large étendue dans un axe horizontal X-X'. Ce premier faisceau lumineux 4 est par ailleurs située sous cet axe horizontal X-X'. Une ligne supérieure de ce faisceau est appelée ligne de coupure 4.1 et on constate que celle-ci est plane et parallèle à l'axe horizontal X-X', tout en étant située en dessous de cet axe horizontal X-X'.The projection of the first light beam 4 generated by at least a first optical module has a large extent in a horizontal axis X-X '. This first light beam 4 is also located under this horizontal axis X-X '. An upper line of this beam is called cut line 4.1 and it is found that it is flat and parallel to the horizontal axis X-X ', while being located below this horizontal axis X-X'.

Selon un exemple de réalisation, cette ligne de coupure peut être nette, c'est-à-dire franche entre la zone éclairée et la zone non éclairée. Alternativement, cette ligne de coupure 4.1 peut être floue, la zone éclairée diminuant progressivement à mesure que l'on pénètre dans la zone non éclairée.According to an exemplary embodiment, this cut line can be sharp, that is to say frank between the illuminated area and the unlit area. Alternatively, this cut line 4.1 can be blurred, the illuminated area decreasing gradually as one enters the unlit area.

La figure 1 montre également une projection sur ce même écran d'un deuxième faisceau lumineux 6. Ce deuxième faisceau lumineux 6 est formé par un deuxième module optique installé dans le dispositif d'éclairage et/ou de signalisation, sur un support commun au premier module optique. La projection du deuxième faisceau lumineux 6 présente une étendue plus réduite que celle du premier faisceau lumineux 4, ainsi qu'un bord de coupure en V. Ce bord de coupure comporte une première branche 6.1, située d'un côté de l'axe optique Z-Z' et parallèle à l'axe horizontal X-X'. Ce bord de coupure comprend encore une deuxième branche 6.2, de l'autre côté de l'axe optique Z-Z', qui s'élève au-dessus de l'axe horizontal X-X' d'un angle α non-nul, par exemple compris entre 8° et 15°. Ce deuxième faisceau 6 est parallèle sur l'axe horizontal X-X'.The figure 1 also shows a projection on the same screen of a second light beam 6. This second light beam 6 is formed by a second optical module installed in the lighting and / or signaling device, on a support common to the first optical module. The projection of the second light beam 6 has a smaller extent than that of the first light beam 4, as well as a V-shaped cutting edge. This cutting edge comprises a first leg 6.1, situated on one side of the optical axis. ZZ 'and parallel to the horizontal axis X-X'. This cutoff edge further comprises a second branch 6.2, on the other side of the optical axis Z-Z ', which rises above the horizontal axis XX' by a non-zero angle α, by example between 8 ° and 15 °. This second beam 6 is parallel on the horizontal axis X-X '.

Le premier faisceau lumineux 4 et le deuxième faisceau lumineux 6 se superposent pour former un faisceau lumineux résultant 50 formé par la combinaison du premier faisceau lumineux 4 avec le deuxième faisceau lumineux 6. La fonction du premier faisceau lumineux 4 est de fournir un éclairage large et diffus qui améliore la vision qu'a le conducteur de la route qu'il emprunte avec son véhicule automobile. La fonction du deuxième faisceau 6 est de remplir les conditions requises pour respecter la norme en vigueur pour un éclairage code.The first light beam 4 and the second light beam 6 are superimposed to form a resulting light beam 50 formed by the combination of the first light beam 4 with the second light beam 6. The function of the first light beam 4 is to provide a wide illumination and diffuse which improves the driver's vision of the road he uses with his motor vehicle. The function of the second beam 6 is to fulfill the conditions required to comply with the standard in force for a code illumination.

Le premier et deuxième modules optiques sont par ailleurs disposés, les uns par rapport aux autres, de manière qu'en projection sur l'écran (X-X'; Y-Y') perpendiculaire à l'axe optique Z-Z', la ligne de coupure 4.1 du premier faisceau lumineux 4 et l'une des branches 6.1 du bord de coupure du deuxième faisceau lumineux soient parallèles à l'axe horizontal X-X' dudit écran.The first and second optical modules are also arranged, relative to each other, so that in projection on the screen (X-X '; Y-Y') perpendicular to the optical axis Z-Z ', the cutoff line 4.1 of the first light beam 4 and one of the branches 6.1 of the cutoff edge of the second light beam are parallel to the horizontal axis XX 'of said screen.

Plus précisément, la ligne de coupure 4.1 du premier faisceau lumineux 4 est en dessous du bord de coupure 6.1 du deuxième faisceau lumineux 6, une distance référencée 73 séparant cette ligne de coupure et ce bord de coupure. Cette distance 73 résulte du choix d'incliner le premier faisceau lumineux 4 vers le bas selon un angle compris entre 0,3° et 0,6° par rapport à un plan qui par la source lumineuse génératrice du deuxième faisceau lumineux 6 et le bord de coupure 6.1.More precisely, the cutoff line 4.1 of the first light beam 4 is below the cutoff edge 6.1 of the second light beam 6, a distance referenced 73 separating this cutoff line and this cutoff edge. This distance 73 results from the choice of inclining the first light beam 4 downwards according to a angle between 0.3 ° and 0.6 ° with respect to a plane which by the light source generating the second light beam 6 and the cutting edge 6.1.

Le dispositif d'éclairage et/ou de signalisation qui reçoit ces deux modules optiques rassemblés sur un même support permet ainsi de générer le faisceau lumineux résultant 50 de type code, et peut donc aisément être incorporé dans un phare avant de véhicule automobile.The lighting and / or signaling device which receives these two optical modules assembled on the same support thus makes it possible to generate the resulting light beam 50 of the code type, and can therefore easily be incorporated in a headlight of a motor vehicle.

Un premier mode de réalisation d'un dispositif d'éclairage et/ou de signalisation 1, représenté sur la figure 2, est destiné à équiper le véhicule automobile. Il présente un axe optique Z-Z' et comprend un ensemble de quatre modules optiques 2, 2', 3 et 3', dont deux premiers modules optiques 2 et 2' sont aptes à générer le premier faisceau lumineux à coupure plane et deux deuxièmes modules optiques 3 et 3' sont aptes à générer le deuxième faisceau lumineux à coupure en « V », c'est-à-dire formant un angle non-nul, par exemple égale à une valeur comprise entre 8° et 15°. Ces quatre modules optiques 2, 2', 3 et 3' sont tous alignés suivant un axe X-X', et présentent tous des axes optiques confondus avec l'axe Z-Z'.A first embodiment of a lighting and / or signaling device 1, represented on the figure 2 , is intended to equip the motor vehicle. It has an optical axis ZZ 'and comprises a set of four optical modules 2, 2', 3 and 3 ', of which two first optical modules 2 and 2' are capable of generating the first plane-cut light beam and two second optical modules 3 and 3 'are capable of generating the second "V" cut-off light beam, that is to say forming a non-zero angle, for example equal to a value between 8 ° and 15 °. These four optical modules 2, 2 ', 3 and 3' are all aligned along an axis X-X ', and all have optical axes coinciding with the axis ZZ'.

Selon ce premier mode de réalisation, chaque module optique 2, 2', 3 et 3' comprend une source lumineuse 51 qui prend la forme d'une ou plusieurs diodes électroluminescentes. Ces sources de lumineuse 51 sont alignées selon une direction rectiligne confondue avec l'axe X-X'.According to this first embodiment, each optical module 2, 2 ', 3 and 3' comprises a light source 51 which takes the form of one or more light-emitting diodes. These light sources 51 are aligned in a rectilinear direction coincident with the axis X-X '.

Chacun de ces modules comprend encore un réflecteur 52 de lumière à surfaces complexes. Un tel réflecteur, autrement appelé miroir, forme une unique pièce qui assure le renvoi et la concentration des rayons lumineux sur la route, tout en garantissant la ligne de coupure, pour le premier faisceau lumineux, ou le bord de coupure pour le deuxième faisceau lumineux.Each of these modules also comprises a reflector 52 of light with complex surfaces. Such a reflector, otherwise called mirror, forms a single piece which ensures the return and concentration of light rays on the road, while ensuring the cutoff line, for the first light beam, or the cutoff edge for the second light beam .

Au moins un premier module optique 2 et un deuxième module optique 3 sont rassemblés ou réunis sur un même support 7. Selon cet exemple de réalisation, les deux premiers modules optiques 2 et 2' chargés de générer le premier faisceau lumineux et les deux deuxièmes modules optiques 3 et 3' chargés de générer le deuxième faisceau lumineux sont réunis sur le même support 7, ce dernier formant par exemple un substrat rigide ou flexible.At least a first optical module 2 and a second optical module 3 are assembled or united on the same support 7. According to this embodiment, the first two optical modules 2 and 2 'responsible for generating the first light beam and the two second modules 3 and 3 'optical responsible for generating the second light beam are united on the same support 7, the latter forming for example a rigid or flexible substrate.

Un tel substrat apporte une tenue mécanique à l'ensemble formé par au moins le premier module optique et le deuxième module optique.Such a substrate provides a mechanical strength to the assembly formed by at least the first optical module and the second optical module.

La projection du premier faisceau lumineux 4 généré par les premiers modules optiques 2 et 2', sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique Z-Z' du dispositif d'éclairage et/ou de signalisation 1, est représentée sur la figure 3. Ce premier faisceau lumineux 4 présente une large étendue, située sous l'axe horizontal X-X', ainsi que la ligne de coupure 4.1 plane et parallèle audit axe horizontal X-X'. On notera que les modules optiques 2 et 2' présentent une structure identique, ce qui permet de standardiser leur construction.The projection of the first light beam 4 generated by the first optical modules 2 and 2 ', on a screen (XX'; Y-Y ') perpendicular to the optical axis ZZ' of the lighting and / or signaling device 1, is represented on the figure 3 . This first light beam 4 has a large extent, located under the horizontal axis X-X ', and the cut line 4.1 flat and parallel to said horizontal axis X-X'. It will be noted that the optical modules 2 and 2 'have an identical structure, which makes it possible to standardize their construction.

La figure 4 montre la projection du faisceau lumineux résultant 50 généré par la combinaison du premier module optique avec le deuxième module optique. Le premier faisceau lumineux 4 présente une grande étendue sous l'axe horizontal X-X', ce qui permet de fournir un éclairage très large pour le confort du conducteur du véhicule automobile. Ce faisceau lumineux résultant 50 comprend également une coupure en V générée par le deuxième faisceau lumineux 6, dont la première branche 6.1, située d'un côté de l'écran (X-X' ; Y-Y'), est parallèle à l'horizontale X-X', et la deuxième branche 6.2, située de l'autre côté dudit écran, s'élève au-dessus de l'axe horizontal X-X' d'un angle non-nul.The figure 4 shows the projection of the resulting light beam 50 generated by the combination of the first optical module with the second optical module. The first light beam 4 has a large extent under the horizontal axis X-X ', which makes it possible to provide a very wide illumination for the comfort of the driver of the motor vehicle. This resulting light beam 50 also comprises a V-cut generated by the second light beam 6, the first leg 6.1 of which, on one side of the screen (XX ';Y-Y'), is parallel to the horizontal X-X ', and the second branch 6.2, located on the other side of said screen, rises above the horizontal axis XX' of a non-zero angle.

Un deuxième mode de réalisation du dispositif d'éclairage et/ou de signalisation 11, selon la présente invention, est représenté sur la figure 5. Ce dispositif d'éclairage et/ou de signalisation 11 comporte, de façon semblable au dispositif 1 décrit en référence aux figures 2 à 4, quatre modules optiques 12, 12', 13 et 13' de structure sensiblement identique, ces quatre modules étant cependant distincts en dehors du support 17 qui forme l'élément structurel commun à ces quatre modules optiques 12, 12', 13 et 13'.A second embodiment of the lighting and / or signaling device 11, according to the present invention, is represented on the figure 5 . This lighting and / or signaling device 11 comprises, in a manner similar to the device 1 described with reference to the Figures 2 to 4 , four optical modules 12, 12 ', 13 and 13' of substantially identical structure, these four modules however being distinct outside the support 17 which forms the structural element common to these four optical modules 12, 12 ', 13 and 13' .

Chacun des modules optiques 12, 12', 13 et 13' comprend dans cet ordre :

  • un collecteur optique 53 pour collecter la lumière issue de la source lumineuse 51,
  • une plieuse 54 présentant une surface réfléchissante et une arête de coupure en vue de laisser passer seulement une partie du faisceau provenant du collecteur optique 53, et ainsi de produire le faisceau lumineux concerné, c'est-à-dire le premier faisceau ou le deuxième faisceau, et
  • une lentille 55 agencée pour focaliser vers l'avant le faisceau provenant du collecteur optique 53.
Each of the optical modules 12, 12 ', 13 and 13' comprises in this order:
  • an optical collector 53 for collecting light from the light source 51,
  • a folder 54 having a reflective surface and a cutting edge for passing only a portion of the beam from the optical collector 53, and thus producing the light beam concerned, that is to say the first beam or the second beam beam, and
  • a lens 55 arranged to focus forward the beam from the optical collector 53.

On notera que la lentille 55 est maintenue mécaniquement par deux bras 56 et 57 qui sont solidaires du support 17.Note that the lens 55 is mechanically held by two arms 56 and 57 which are integral with the support 17.

Le dispositif d'éclairage et/ou de signalisation 11 comprend encore un dispositif de refroidissement 18 en contact physique avec le support 17. Une fonction de ce dispositif de refroidissement 18 est de dissiper les calories générées par les diodes électroluminescentes formant au moins une ou plusieurs sources lumineuses. Ce dispositif de refroidissement 18 est également destiné à dissiper les calories générées par les composants électroniques qui sont montés sur le support 17, ce dernier formant alors une carte de circuit imprimé. Enfin, ce dispositif de refroidissement apporte une troisième fonction qui consiste à renforcer la tenue mécanique du support 17 afin de limiter le stress mécanique subit par la carte de circuit imprimé.The lighting and / or signaling device 11 also comprises a cooling device 18 in physical contact with the support 17. A function of this cooling device 18 is to dissipate the calories generated by the light-emitting diodes forming at least one or more light sources. This cooling device 18 is also intended to dissipate the calories generated by the electronic components that are mounted on the support 17, the latter then forming a printed circuit board. Finally, this cooling device provides a third function which consists in reinforcing the holding mechanical support 17 to limit the mechanical stress experienced by the printed circuit board.

Selon la figure 6, ces premiers et deuxièmes modules optiques sont réunis sur un même support 17 plan. Le support 17 comporte à cet effet un ensemble de portions de fixation 17.1, 17.2, 17.3 et 17.4 par lesquels les modules optiques 12, 12', 13 et 13' peuvent être respectivement fixés ou solidarisés audit support 17. Le support selon l'invention est commun à au moins deux modules optiques et forme un élément unitaire, autrement dit monobloc. Ce support est par exemple réalisé par une seule et unique opération de moulage à partir d'un matériau plastique, par exemple une résine.According to figure 6 these first and second optical modules are united on the same plane support 17. The support 17 comprises for this purpose a set of fixing portions 17.1, 17.2, 17.3 and 17.4 by which the optical modules 12, 12 ', 13 and 13' can be respectively fixed or secured to said support 17. The support according to the invention is common to at least two optical modules and forms a unitary element, in other words monobloc. This support is for example made by a single molding operation from a plastic material, for example a resin.

Ainsi, les modules optiques 12, 12', 13 et 13' sont alignés par l'intermédiaire de leur support commun 17, conçu directement pour le réglage de leurs positions. Il n'est donc pas nécessaire, conformément à la présente invention, de recourir à des étapes supplémentaires de réglage des modules, particulièrement coûteuses, car la référence, c'est-à-dire le support commun, est identique pour les modules optiques. Par ailleurs, on aura pris soin de positionner sur le support 17 le premier module optique de sorte que la ligne de coupure du premier faisceau lumineux soit en dessous du bord de coupure du deuxième faisceau lumineux.Thus, the optical modules 12, 12 ', 13 and 13' are aligned through their common support 17, designed directly for the adjustment of their positions. It is therefore not necessary, in accordance with the present invention, to resort to additional steps of adjusting the modules, which are particularly expensive, since the reference, that is to say the common support, is identical for the optical modules. Furthermore, care will have been taken to position the first optical module on the support 17 so that the cutoff line of the first light beam is below the cutoff edge of the second light beam.

Cette figure 6 illustre également la présence de la pluralité de sources lumineuses 51 sur une même face support 17.This figure 6 also illustrates the presence of the plurality of light sources 51 on the same support surface 17.

Cette figure 6 montre encore le dispositif de refroidissement 18 qui comprend un secteur plan 58 sur lequel repose à plat le support 17 et un secteur de dispersion 59 comprenant une pluralité d'ailettes 60 qui s'étend dans un plan perpendiculaire au secteur plan 58.This figure 6 still shows the cooling device 18 which comprises a plane sector 58 on which the support 17 lies flat and a dispersion sector 59 comprising a plurality of fins 60 which extends in a plane perpendicular to the plane sector 58.

La projection du premier faisceau lumineux 14 généré par les premiers modules optiques 12 et 12', sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique Z-Z' du dispositif d'éclairage et/ou de signalisation 11, est représentée sur la figure 7. Celle-ci présente une grande étendue, située sous l'axe horizontal X-X', ainsi qu'une ligne de coupure 14.1 plane et parallèle audit axe horizontal X-X'.The projection of the first light beam 14 generated by the first optical modules 12 and 12 ', on a screen (XX'; Y-Y ') perpendicular to the optical axis ZZ' of the lighting and / or signaling device 11, is represented on the figure 7 . This has a large extent, located under the horizontal axis X-X ', and a cut line 14.1 plane and parallel to said horizontal axis X-X'.

Sur la figure 8, la projection du deuxième faisceau lumineux 15, généré par les deuxièmes modules optiques 13 et 13', sur ce même écran (X-X' ; Y-Y'), présente une étendue plus réduite que celle de la projection représentée sur la figure 7, ainsi qu'un bord de coupure en V. Ce bord de coupure comporte une première branche 15.1, située d'un côté de l'écran par rapport à l'axe Y-Y' et parallèle à l'axe horizontal X-X', et une deuxième branche 15.2, de l'autre côté de l'axe Y-Y' et s'élevant au-dessus de l'axe horizontal X-X' d'un angle non-nul.On the figure 8 the projection of the second light beam 15, generated by the second optical modules 13 and 13 ', on this same screen (XX'; Y-Y '), has a smaller extent than that of the projection represented on the figure 7 , as well as a cutting edge in V. This cutting edge comprises a first branch 15.1, located on one side of the screen with respect to the axis YY 'and parallel to the horizontal axis X-X', and a second branch 15.2, on the other side of the axis YY 'and rising above the horizontal axis XX' of a non-zero angle.

La projection du faisceau lumineux résultant 16 généré par l'ensemble du dispositif d'éclairage et/ou de signalisation 11, représentée sur la figure 9, présente, grâce au premier faisceau lumineux 14, une grande étendue sous l'axe horizontal X-X', ce qui permet de fournir un éclairage très large pour le confort du conducteur du véhicule automobile. Ce faisceau lumineux résultant 16 comprend également un bord de coupure en V généré par le deuxième faisceau lumineux 15, dont la première branche 16.1, située d'un côté de l'écran (X-X' ; Y-Y'), est parallèle à l'horizontale X-X', et la deuxième branche 16.2, située de l'autre côté dudit écran, s'élève au-dessus de l'axe horizontal X-X' d'un angle non-nul.The projection of the resulting light beam 16 generated by the entire lighting and / or signaling device 11, represented on the figure 9 , present, thanks to the first light beam 14, a large extent under the horizontal axis X-X ', which provides a very wide illumination for the comfort of the driver of the motor vehicle. This resulting light beam 16 also comprises a V-cutoff edge generated by the second light beam 15, whose first branch 16.1, located on one side of the screen (XX ';Y-Y'), is parallel to the 'horizontal X-X', and the second branch 16.2, located on the other side of said screen, rises above the horizontal axis XX 'of a non-zero angle.

Selon un troisième mode de réalisation de l'invention, illustré par les figures 10 et 11, le dispositif d'éclairage et/ou de signalisation 21 comporte uniquement trois modules optiques 22, 22' et 23, de constructions semblables aux modules 12, 12', 13 et 13' détaillés au deuxième mode de réalisation.According to a third embodiment of the invention, illustrated by the Figures 10 and 11 , the lighting and / or signaling device 21 comprises only three optical modules 22, 22 'and 23, of constructions similar to the modules 12, 12', 13 and 13 'detailed in the second embodiment.

Dans ce dispositif 21, les premiers modules optiques 22 et 22' sont aptes à générer le premier faisceau lumineux mentionné ci-dessus, de grande étendue et dont la projection sur un écran perpendiculaire à l'axe optique du dispositif 21 présente une ligne de coupure plane, tandis que le deuxième module optique 23 est apte à générer le deuxième faisceau lumineux, d'étendue réduite et dont la projection sur un écran perpendiculaire à l'axe optique présente un bord de coupure en V.In this device 21, the first optical modules 22 and 22 'are capable of generating the first light beam mentioned above, of large extent and whose projection on a screen perpendicular to the optical axis of the device 21 has a cut line plane, while the second optical module 23 is able to generate the second light beam, of reduced extent and whose projection on a screen perpendicular to the optical axis has a V-cut edge.

L'ensemble de ces modules 22, 22' et 23 sont réunis sur un support commun 27, ce dernier pouvant être un substrat rigide ou flexible constitutif d'un circuit imprimé porteur de composants électroniques.All of these modules 22, 22 'and 23 are joined on a common support 27, the latter may be a rigid or flexible substrate constituting a printed circuit carrying electronic components.

Le dispositif d'éclairage et/ou de signalisation comprend le support 27 sur lequel est solidarisé quatre sources lumineuses 51, chaque premier module optique 22 et 22' comprenant une unique source lumineuse alors que le deuxième module optique 23 comprend deux sources lumineuses 51. Ces sources lumineuses 51 sont avantageusement réalisées par des diodes électroluminescentes.The lighting and / or signaling device comprises the support 27 on which four light sources 51 are secured, each first optical module 22 and 22 'comprising a single light source while the second optical module 23 comprises two light sources 51. Light sources 51 are advantageously made by light-emitting diodes.

Par-dessus le support 27 est installé un collecteur 61 unique et commun aux deux premiers modules optiques 22 et 22' et au deuxième module optique 23. Ce collecteur 61 est ainsi fabriqué à partir d'une même étape de moulage et présente des dômes 62 assurant une réflexion du faisceau lumineux au droit de chaque source lumineuse 51.On top of the support 27 is installed a single collector 61 and common to the first two optical modules 22 and 22 'and the second optical module 23. This collector 61 is thus manufactured from the same molding step and has domes 62 ensuring reflection of the light beam at the right of each light source 51.

Le support 27 est pris en sandwich entre le collecteur 61 et un dispositif de refroidissement 28, ces éléments étant reliés ensemble par une multiplicité de moyens de solidarisation 63, notamment des vis.The support 27 is sandwiched between the collector 61 and a cooling device 28, these elements being connected together by a multiplicity of securing means 63, in particular screws.

Les dômes 62 sont ouverts vers l'avant et on trouve une plieuse 64 sensiblement au droit de ces ouvertures. On notera tout particulièrement que le dispositif d'éclairage et/ou de signalisation 21 comprend uniquement deux plieuses 64, une première plieuse étant commune aux deux premiers modules optiques 22 et 22' et une deuxième plieuse étant affectée au deuxième module optique 23. Ces plieuses 64 présentent chacun une fonction de réflexion des rayons lumineux tout en définissant la ligne de coupure, pour le premier faisceau lumineux, ou le bord de coupure, pour le deuxième faisceau lumineux.The domes 62 are open towards the front and there is a folder 64 substantially to the right of these openings. It will be particularly noted that the lighting device and / or signaling 21 comprises only two folders 64, a first folder being common to the first two optical modules 22 and 22 'and a second folder being assigned to the second optical module 23. These folders 64 each have a light ray reflection function while defining the cutoff line, for the first light beam, or the cutoff edge, for the second light beam.

Selon un exemple de réalisation les deux plieuses, bien que distinctes vis-à-vis des modules optiques qu'elles équipent, peuvent être réalisées sous la forme d'une unique pièce qui s'étend tout le long du dispositif d'éclairage et/ou de signalisation, c'est-à-dire en face des deux premiers modules optique 22 et 22' et en face du deuxième module optique 23.According to an exemplary embodiment the two folders, although distinct vis-à-vis optical modules they equip, can be made in the form of a single piece that extends throughout the lighting device and / or signaling, that is to say opposite the first two optical modules 22 and 22 'and opposite the second optical module 23.

Le dispositif d'éclairage et/ou de signalisation 21 comprend encore un dispositif de focalisation 65 destinée à focaliser le faisceau lumineux qu'il reçoit du collecteur 61. Selon ce troisième mode de réalisation, le dispositif de focalisation 65 est formé par une unique pièce employée à la fois pour les deux premiers modules optiques 22 et 22', mais également pour le deuxième module optique 23. Bien que réalisé en une pièce, ce dispositif de focalisation 65 comprend une première et unique lentille 66 dédiée au couple de premiers modules optique 22 et 22', et une deuxième lentille 67 disposée face à l'ensemble constitué de la source lumineuse 51, du dôme 62 et de la plieuse 64 du deuxième module optique 23.The lighting and / or signaling device 21 also comprises a focusing device 65 intended to focus the light beam that it receives from the collector 61. According to this third embodiment, the focusing device 65 is formed by a single piece used both for the first two optical modules 22 and 22 ', but also for the second optical module 23. Although made in one piece, this focusing device 65 comprises a first and only lens 66 dedicated to the pair of first optical modules 22 and 22 ', and a second lens 67 arranged facing the assembly consisting of the light source 51, the dome 62 and the folder 64 of the second optical module 23.

La figure 11 est une vue de ce troisième mode de réalisation du dispositif d'éclairage et/ou de signalisation 21 dépourvue des plieuses 64, du collecteur 61 et du dispositif de focalisation 65. Cette figure montre donc la disposition plan sur plan du support 27 sur le dispositif de refroidissement 28, ce dernier présentant ici une forme général en cuvette dans laquelle s'étend des ailettes de refroidissement.The figure 11 is a view of this third embodiment of the lighting and / or signaling device 21 devoid of the folders 64, the collector 61 and the focusing device 65. This figure therefore shows the plane-to-plane arrangement of the support 27 on the device 28, the latter here having a general shape in a bowl in which extends cooling fins.

Le dispositif de refroidissement 28 comprend au moins un premier centreur 68 dont la fonction est de caractériser la position du support 27 par rapport au dispositif de refroidissement 28. Ce dernier comprend encore au moins un deuxième centreur 69, dans cet exemple un couple de deuxième centreur 69, destiné à centrer le collecteur unique 61 par rapport au support 27 via le dispositif de refroidissement 28.The cooling device 28 comprises at least a first centralizer 68 whose function is to characterize the position of the support 27 with respect to the cooling device 28. The latter also comprises at least a second centralizer 69, in this example a pair of second centraliser 69, for centering the single collector 61 with respect to the support 27 via the cooling device 28.

Le dispositif de refroidissement comprend encore au moins un troisième centreur 70, ici un couple de troisième centreur 70, dont la fonction est de garantir la position des plieuses 64 par rapport aux autres composants du module concerné.The cooling device further comprises at least a third centralizer 70, here a pair of third centralizer 70, whose function is to guarantee the position of the folders 64 relative to the other components of the module concerned.

Les figures 12 et 13 représentent un quatrième mode de réalisation du dispositif d'éclairage et/ou de signalisation 31 selon la présente invention, comportant quatre modules optiques 32, 32', 33 et 33' disposés sur un support commun 37, de forme plane.The Figures 12 and 13 represent a fourth embodiment of the lighting and / or signaling device 31 according to the present invention, comprising four optical modules 32, 32 ', 33 and 33' disposed on a common support 37, of planar shape.

Les particularités de ce quatrième mode sont les suivantes. Chacun des premiers et deuxièmes modules optiques est constitué d'une source lumineuse 51 formée avantageusement par une diode électroluminescente. En face de cette source lumineuse est disposé un collecteur 61 qui renvoie les rayons lumineux émis par la source lumineuse 51 en direction d'une plieuse 64 dont la fonction est identique celle employée dans le deuxième et le troisième mode de réalisation. Chacun de ces modules optiques comprend enfin un réflecteur 71 dont la fonction est de rediriger les rayons lumineux ayant franchis la plieuse pour former le premier faisceau lumineux ou le deuxième faisceau lumineux.The peculiarities of this fourth mode are as follows. Each of the first and second optical modules consists of a light source 51 advantageously formed by a light emitting diode. In front of this light source is a collector 61 which reflects the light rays emitted by the light source 51 towards a folder 64 whose function is identical to that used in the second and third embodiments. Each of these optical modules finally comprises a reflector 71 whose function is to redirect the light rays having crossed the folder to form the first light beam or the second light beam.

Selon une particularité de ce quatrième mode de réalisation, les deux collecteurs 61, les deux plieuses 64 et les deux réflecteurs 71 des deux premiers modules optiques 32 et 32' forment une seule et unique pièce. Cette dernière est fabriquée à partir d'une même étape de moulage. Il en va de même pour le couple de deuxièmes modules optiques 33 et 33'.According to a feature of this fourth embodiment, the two collectors 61, the two folders 64 and the two reflectors 71 of the first two optical modules 32 and 32 'form a single piece. The latter is made from of the same molding step. It is the same for the pair of second optical modules 33 and 33 '.

Sur la figure 13, le dispositif de refroidissement 38 comprend une paroi 72 à partir de laquelle s'étend une pluralité d'ailettes de refroidissement 60 selon un plan perpendiculaire au plan dans lequel s'étend la paroi 72.On the figure 13 , the cooling device 38 comprises a wall 72 from which extends a plurality of cooling fins 60 in a plane perpendicular to the plane in which the wall 72 extends.

Le support 27, par exemple une carte de circuit imprimé, est alors en contact avec le dispositif de refroidissement, par exemple en étant plaqué contre une face libre de la paroi 72.The support 27, for example a printed circuit board, is then in contact with the cooling device, for example by being pressed against a free face of the wall 72.

Enfin, les figures 14 et 15 représentent un cinquième mode de réalisation du dispositif 41 selon la présente invention, comportant trois modules optiques référencés 42, 42' et 43 et disposés sur un support commun 47, de forme plane. Ce support 47 est solidarisé à un dispositif de refroidissement 48 par une face opposée à celle qui reçoit les sources lumineuses 51, cette face recevant également des composants électroniques.Finally, Figures 14 and 15 represent a fifth embodiment of the device 41 according to the present invention, comprising three optical modules referenced 42, 42 'and 43 and arranged on a common support 47, of planar shape. This support 47 is secured to a cooling device 48 by a face opposite to that which receives the light sources 51, this face also receiving electronic components.

Ce cinquième mode de réalisation du dispositif d'éclairage et/ou de signalisation 41 est une combinaison du premier mode de réalisation avec le deuxième mode de réalisation. En effet, le ou les premiers modules optiques 42 et 42' comprennent principalement la source lumineuse 51 et un miroir ou réflecteur 52 à surfaces complexes solidarisé sur la face du support 47 qui reçoit la source lumineuse. Pour plus de détails, on se reportera aux figures 2 à 4 et à la description qui s'y rapporte.This fifth embodiment of the lighting and / or signaling device 41 is a combination of the first embodiment with the second embodiment. Indeed, the first optical module or modules 42 and 42 'mainly comprise the light source 51 and a mirror or reflector 52 with complex surfaces secured to the face of the support 47 which receives the light source. For more details, please refer to Figures 2 to 4 and the description that relates to it.

Le deuxième module optique 43 comprend un collecteur optique 53 qui reçoit la lumière issue de deux sources lumineuses 51. Ce collecteur 53 envoie cette lumière vers une plieuse 54 présentant au moins un bord de coupure en vue d'autoriser le passage de seulement une partie du faisceau lumineux provenant du collecteur optique 53 pour produire ainsi le deuxième faisceau lumineux et son bord de coupure. Enfin, une lentille 55 est agencée pour focaliser le deuxième faisceau lumineux provenant du collecteur et le projeter sur la route empruntée par le véhicule.The second optical module 43 comprises an optical collector 53 which receives light from two light sources 51. This collector 53 sends this light to a folder 54 having at least one cutting edge in order to allow the passage of only a portion of the light. light beam from the collector optical 53 to produce the second light beam and its cutting edge. Finally, a lens 55 is arranged to focus the second light beam from the collector and project it on the road taken by the vehicle.

La figure 15 montre ce cinquième mode de réalisation en l'absence des composants des modules optiques. On constate la présence de quatre diodes électroluminescentes 51, dont une première est dédiée au premier module optique 42, une deuxième est dédiée à un autre premier module optique 42', une troisième et une quatrième étant dédiées au deuxième module optique 43.The figure 15 shows this fifth embodiment in the absence of the components of the optical modules. The presence of four light-emitting diodes 51, one of which is dedicated to the first optical module 42, a second is dedicated to another first optical module 42 ', a third and a fourth being dedicated to the second optical module 43.

On notera que, dans toutes les réalisations décrites ci-dessus, les modules optiques peuvent être avantageusement agencés de manière qu'en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique Z-Z', la première branche du bord de coupure en V du deuxième faisceau lumineux, parallèle à l'axe horizontal X-X', soit située au-dessus de la coupure plane du premier faisceau lumineux. Ainsi, et quelles que soient les tolérances de fabrication et d'assemblage du premier module optique vis-à vis du support commun, il n'est pas nécessaire d'en assurer un réglage très fin.It will be noted that, in all the embodiments described above, the optical modules may advantageously be arranged so that in projection on a screen (XX '; Y-Y') perpendicular to the optical axis Z-Z ', the first branch of the V-cutoff edge of the second light beam, parallel to the horizontal axis X-X ', is located above the plane cutoff of the first light beam. Thus, and whatever the tolerances of manufacture and assembly of the first optical module with respect to the common support, it is not necessary to ensure a very fine adjustment.

Plus précisément, la ligne de coupure plane du premier faisceau lumineux étant par exemple floue, les modules optiques sont préférentiellement agencés l'un par rapport à l'autre de sorte que, en projection sur l'écran (X-X' ; Y-Y'), la coupure plane et floue du premier faisceau lumineux soit comprise dans le deuxième faisceau lumineux.More specifically, since the plane cutoff line of the first light beam is, for example, fuzzy, the optical modules are preferably arranged relative to one another so that, when projected onto the screen (XX '; Y-Y' ), the planar and fuzzy cutoff of the first light beam is included in the second light beam.

On notera que la détermination de netteté d'une coupure est opérée par son gradient, la coupure étant considérée comme nette dès lors que la valeur du gradient dépasse 0,4, et floue quand cette valeur est inférieure à 0,4.It should be noted that the determination of the sharpness of a cut is made by its gradient, the cutoff being considered clear as soon as the value of the gradient exceeds 0.4, and fuzzy when this value is less than 0.4.

Il a été constaté qu'une disposition optimale des modules optiques permettant de respecter les normes en vigueur pour un faisceau code peut être obtenue lorsqu'en projection sur l'écran (X-X' ; Y-Y') perpendiculaire à l'axe optique Z-Z', la ligne de coupure du premier faisceau lumineux est située au-dessous de la première branche de la coupure du deuxième faisceau lumineux selon un angle compris entre 0,3° et 0,6°.It has been found that an optimal arrangement of the optical modules making it possible to comply with the standards in force for a code beam can be obtained when in projection on the screen (XX ', Y-Y') perpendicular to the optical axis Z -Z ', the cut line of the first light beam is located below the first branch of the cutoff of the second light beam at an angle of between 0.3 ° and 0.6 °.

Aux fins d'un éclairage optimal vis-à-vis du coût de fabrication du dispositif, chaque module optique peut par exemple comprendre une ou plusieurs sources lumineuses sous forme de diodes électroluminescentes, à mono-puce ou à multi-puces, toutes ces diodes étant de préférence disposées d'un même côté de leur support commun.For the purpose of optimum illumination vis-à-vis the cost of manufacture of the device, each optical module may for example comprise one or more light sources in the form of light emitting diodes, single-chip or multi-chip, all these diodes preferably being arranged on the same side of their common support.

Claims (13)

Dispositif d'éclairage et/ou de signalisation (1, 11, 21, 31, 41), notamment de véhicule automobile, présentant un axe optique (Z-Z') et comprenant : - un premier module optique (2, 2', 12, 12', 22, 22', 32, 32', 42, 42') apte à générer un premier faisceau lumineux (4, 14) présentant, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), ligne de coupure (4.1, 14.1) plane ; et - une deuxième module optique (3, 3', 13, 13', 23, 33, 33', 43) apte à générer un deuxième faisceau lumineux (6, 15) présentant, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), un bord de coupure comprenant deux branches (6.1, 6.2, 15.1, 15.2) formant entre elles un angle non-nul, lesdits premier et deuxième modules optiques étant agencés l'un par rapport à l'autre de sorte que, en projection sur un écran (X-X' ; Y-Y') perpendiculaire audit axe optique (Z-Z'), lesdits premier et deuxième faisceaux lumineux (4, 14, 6, 15) soient au moins partiellement superposés, caractérisé en ce que lesdits premier et deuxième modules optiques sont réunis sur un même support (17, 27, 37, 47).Lighting and / or signaling device (1, 11, 21, 31, 41), in particular for a motor vehicle, having an optical axis (Z-Z ') and comprising: a first optical module (2, 2 ', 12, 12', 22, 22 ', 32, 32', 42, 42 ') capable of generating a first light beam (4, 14) presenting, in projection on a screen (XX ';Y-Y') perpendicular to the optical axis (Z-Z '), plane cut-off line (4.1, 14.1); and a second optical module (3, 3 ', 13, 13', 23, 33, 33 ', 43) capable of generating a second light beam (6, 15) having, in projection on a screen (XX'; Y ') perpendicular to the optical axis (Z-Z'), a cutting edge comprising two branches (6.1, 6.2, 15.1, 15.2) forming between them a non-zero angle, said first and second optical modules being arranged with respect to each other so that, in projection on a screen (XX ';Y-Y') perpendicular to said optical axis (Z-Z '), said first and second light beams (4, 14, 6, 15) are at least partially superimposed, characterized in that said first and second optical modules are united on the same support (17, 27, 37, 47). Dispositif selon la revendication 1, dans lequel les premier et deuxième modules optiques sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), la ligne de coupure (4.1, 14.1) du premier faisceau lumineux (4, 14) et l'une (6.1, 15.1) des branches du bord de coupure du deuxième faisceau lumineux (6, 15) sont parallèles à un axe horizontal (X-X') dudit écran.Device according to claim 1, wherein the first and second optical modules are arranged relative to one another so that, when projected on a screen (XX '; Y-Y') perpendicular to the optical axis ( Z-Z '), the cut-off line (4.1, 14.1) of the first light beam (4, 14) and one (6.1, 15.1) of the branches of the cut-off edge of the second light beam (6, 15) are parallel to a horizontal axis (X-X ') of said screen. Dispositif selon la revendication 2, dans lequel les premier et deuxième modules optiques sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), la branche (6.1, 15.1) du bord de coupure du deuxième faisceau lumineux (6, 15) parallèle à l'axe horizontal (X-X') dudit écran est située au-dessus de la ligne de coupure (4.1, 14.1) du premier faisceau lumineux (4, 14).Device according to Claim 2, in which the first and second optical modules are arranged relative to each other so that, when projected onto a screen (XX ';Y-Y') perpendicular to the optical axis ( Z-Z '), the branch (6.1, 15.1) the cutting edge of the second light beam (6, 15) parallel to the horizontal axis (X-X ') of the said screen is situated above the cut-off line (4.1, 14.1) of the first light beam (4, 14 ). Dispositif selon la revendication 3, dans lequel, la ligne de coupure (4.1, 14.1) du premier faisceau lumineux (4, 14) étant floue, les premier et deuxième modules optiques sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), la ligne de coupure floue (4.1, 14.1) du premier faisceau lumineux (4, 14) est comprise dans le deuxième faisceau lumineux (6, 15).Device according to claim 3, wherein, the cutoff line (4.1, 14.1) of the first light beam (4, 14) being fuzzy, the first and second optical modules are arranged relative to one another so that in projection on a screen (XX '; Y-Y') perpendicular to the optical axis (Z-Z '), the fuzzy cut line (4.1, 14.1) of the first light beam (4, 14) is included in the second light beam (6, 15). Dispositif selon la revendication 4, dans lequel les premier et deuxième modules optiques sont agencés l'un par rapport à l'autre de sorte que, en projection sur un écran (X-X' ; Y-Y') perpendiculaire à l'axe optique (Z-Z'), la ligne de coupure (4.1, 14.1) du premier faisceau lumineux (4, 14) est située au-dessous de la branche (6.1, 15.1) du bord de coupure du deuxième faisceau lumineux (6, 15) selon un angle compris entre 0,3° et 0,6°.Device according to claim 4, in which the first and second optical modules are arranged relative to one another so that, when projected on a screen (XX '; Y-Y') perpendicular to the optical axis ( Z-Z '), the cutoff line (4.1, 14.1) of the first light beam (4, 14) is located below the branch (6.1, 15.1) of the cutoff edge of the second light beam (6, 15) at an angle between 0.3 ° and 0.6 °. Dispositif selon l'une des revendications précédentes, dans lequel le support (17, 27, 37, 47) est plan.Device according to one of the preceding claims, wherein the support (17, 27, 37, 47) is plane. Dispositif selon l'une des revendications précédentes, dans lequel chaque module optique comprend au moins une source lumineuse sous forme de diode électroluminescente, toutes lesdites sources lumineuses étant disposées d'un même côté du support (17, 27, 37, 47).Device according to one of the preceding claims, wherein each optical module comprises at least one light source in the form of a light emitting diode, all said light sources being arranged on the same side of the support (17, 27, 37, 47). Dispositif selon l'une des revendications précédentes, dans lequel le support (17, 27, 37, 47) est formé par un circuit imprimé supportant au moins un composant électronique.Device according to one of the preceding claims, wherein the support (17, 27, 37, 47) is formed by a printed circuit supporting at least one electronic component. Dispositif selon l'une des revendications précédentes, dans lequel est prévu un dispositif de refroidissement (18, 28, 38, 48) en contact avec le support (17, 27, 37, 47).Device according to one of the preceding claims, wherein there is provided a cooling device (18, 28, 38, 48) in contact with the support (17, 27, 37, 47). Dispositif selon l'une des revendications précédentes, dans lequel la coupure d'au moins un des faisceaux lumineux est nette.Device according to one of the preceding claims, wherein the cutting of at least one of the light beams is clear. Dispositif selon l'une des revendications précédentes, dans lequel la coupure d'au moins un des faisceaux lumineux est floue.Device according to one of the preceding claims, wherein the cutoff of at least one of the light beams is blurred. Dispositif selon l'une des revendications précédentes, dans lequel au moins un module optique comprend au moins une source lumineuse sous forme de diode électroluminescente à mono-puce ou à multi-puces.Device according to one of the preceding claims, wherein at least one optical module comprises at least one light source in the form of a single-chip or multi-chip light-emitting diode. Dispositif selon l'une des revendications précédentes, agencé pour participer à la production d'une fonction code d'un véhicule automobile.Device according to one of the preceding claims, arranged to participate in the production of a code function of a motor vehicle.
EP12183948.4A 2011-09-13 2012-09-11 Vorrichtung zur beleuchtung und/oder signalisierung für kraftfahrzeug Active EP2570716B1 (en)

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