WO2021099290A1 - Vehicle lighting module the cutoff of which is modulatable between left-hand drive and right-hand drive - Google Patents

Vehicle lighting module the cutoff of which is modulatable between left-hand drive and right-hand drive Download PDF

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Publication number
WO2021099290A1
WO2021099290A1 PCT/EP2020/082337 EP2020082337W WO2021099290A1 WO 2021099290 A1 WO2021099290 A1 WO 2021099290A1 EP 2020082337 W EP2020082337 W EP 2020082337W WO 2021099290 A1 WO2021099290 A1 WO 2021099290A1
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WO
WIPO (PCT)
Prior art keywords
lighting module
complementary
light beam
main
light
Prior art date
Application number
PCT/EP2020/082337
Other languages
French (fr)
Inventor
Julien VOILQUIN
Hugo MESTRE
Adrien Manassero
Original Assignee
Valeo Vision
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision filed Critical Valeo Vision
Publication of WO2021099290A1 publication Critical patent/WO2021099290A1/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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/62—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution for adaptation between right-hand and left-hand traffic
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/155—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having inclined and horizontal cutoff lines

Definitions

  • TITLE LIGHTING MODULE FOR VEHICLE WITH MODULAR CUT-OFF BETWEEN LEFT DRIVE AND RIGHT DRIVE
  • the invention relates to the field of lighting, in particular lighting for motor vehicles.
  • the night vehicle lighting function with oncoming traffic commonly referred to as a "low beam” (code)
  • a low beam has a higher horizontal cutoff, in accordance with applicable regulations.
  • European regulations provide for a horizontal cutoff with an oblique portion in the center of the beam, so that a left or right half of the light beam has a horizontal cutoff less than the other half. More particularly, for right-hand drive countries, i.e. where the driving position is on the left of the vehicle, the left half of the light beam is less than the right half. Conversely, in countries with left-hand drive, i.e. where the driving position is on the right of the vehicle, the left half of the light beam is greater than the right half. US regulations provide for a flat upper horizontal cut-off, that is to say without an oblique portion. This means that automotive headlamps have to be configured differently depending on these territories.
  • the published patent document US 2018180246 A1 discloses an automotive headlight comprising a screen arranged in the optical path of the light rays forming a cut-off light beam, and whose transmittance is locally variable, such as for example a liquid crystal screen, commonly designated by the acronym LCD ("Liquid Crystal Display"). More particularly, the pixels of this screen can be specifically controlled to achieve the above-mentioned upper horizontal cuts for left-hand drive and right-hand drive, respectively, i.e. with opposing central oblique portions. In other words, this teaching provides for an electrically controlled configuration of the projector for different regulations, in particular conducted at left and right hand drive.
  • the presence of the screen, the transmittance of which is locally variable is expensive and also has the drawback of generating significant light losses, due to the limited maximum transmittance.
  • the object of the invention is to overcome at least one of the drawbacks of the aforementioned prior art. More particularly, the object of the invention is to allow a configuration of a lighting device forming a cut-off light beam according to various regulations in force, in an efficient and economical manner.
  • the first object of the invention is a lighting module, in particular for a motor vehicle, comprising a main optical system capable of forming a main light beam along an optical axis of the module, with an upper horizontal cutoff; a first complementary optical system capable of forming a first complementary light beam along the optical axis of the lighting module, narrower than the main light beam and with an upper oblique cutoff; remarkable in that the lighting module further comprises a second complementary optical system capable of forming a second complementary light beam along the optical axis of the module, narrower than the main light beam and with an oblique upper cutoff opposite to the upper oblique cut-off of the first complementary light beam.
  • upper oblique cutoff opposite the upper oblique cutoff of the first complementary light beam it is meant that the inclination of the oblique cutoff of the second complementary light beam, with respect to a vertical direction, is opposite to that of the upper oblique cutoff of the first additional light beam.
  • the inclination is advantageously greater than 30 ° and / or less than 60 °.
  • the upper cuts of the first and second complementary beams each comprise, on either side of the oblique cut-off, a left horizontal cut-off and a right horizontal cut-off, said left and right horizontal cuts being vertically offset by the oblique cut and in an opposite manner between the first second complementary beams.
  • the lighting module further comprises a third complementary optical system capable of forming a third complementary light beam along the optical axis of the module, narrower than the main light beam and with a horizontal upper cut-off.
  • the lighting module is configured so that the third optical system is only active as an alternative to one of the first and second optical systems, or in addition to one of the first and second optical systems. second optical systems.
  • the lighting module is configured so that the first and second complementary optical systems are only active alternately.
  • each of the first, second and, where appropriate third, additional light beams also has a lower horizontal cutoff.
  • At least one or each of the first, second and, where appropriate third, complementary optical systems comprises a light source, a collector with reflecting surface associated with said light source to form the corresponding complementary light beam .
  • the lighting module comprises a device for projecting the first, second and, where appropriate third, complementary light beams, configured to form an image of the reflecting surface of the or each of the collectors.
  • a device for projecting the first, second and, where appropriate third, complementary light beams configured to form an image of the reflecting surface of the or each of the collectors.
  • the or each of the light sources is configured to emit the light rays in a main direction forming an angle of between 65 ° and 115 ° with respect to the optical axis, preferably perpendicular to the optical axis.
  • the or at least one of the light sources is configured to emit the light rays downwards and the reflecting surface of the corresponding collector forms a cap directed upwards, when the module is in the operational position.
  • the projection device has a focus located on the reflecting surface of the or each of the corresponding collectors, at a distance and in front of a rear edge of said reflecting surface.
  • the or at least one of the light sources is configured to emit the light rays upwards and the reflecting surface of the corresponding collector forms a cap directed downwards, when the module is in the operational position.
  • the projection device has a focus located on the reflecting surface of the or each of the corresponding collectors, at a rear edge of said reflecting surface.
  • the main optical system comprises a light source configured to emit the light rays upwards, at least one collector with a reflecting surface forming a cap directed downwards, associated with said light source to form the main light beam, the lighting module comprises a projection device configured to form an image of the reflecting surface of the at least one collector.
  • the light source of the main optical system comprises several light semiconductor components each associated with one of the collectors of said main optical system.
  • the measures of the invention are advantageous in that they make it possible to produce a lighting module with a lighting function with higher cut-off which can take various configurations, in this case oblique cut-off drive on the right, oblique cut-off driven at left and flat cut-off, by simple electrical activation of the corresponding complementary optical system (s).
  • the module is particularly compact and simple in construction.
  • the cut-off edges are provided by the front and / or rear edges of the reflective surfaces of the collectors.
  • the present application aims at a second object relating to another invention, this second object possibly being combined with the first object described above in its various modes.
  • This said second object is a lighting module, in particular for a motor vehicle, comprising a main optical system capable of forming a main light beam along an optical axis of the module, with an upper horizontal cutoff; a first complementary optical system capable of forming a first complementary light beam along the optical axis of the lighting module, narrower than the main light beam and with an upper oblique cutoff; remarkable in that the main optical system comprises a light source configured to emit the light rays upwards, at least one collector with a reflecting surface forming a cap directed downwards, associated with said light source to form the main light beam, the lighting module comprising a projection device configured to form an image of the reflecting surface of the at least one collector, and in that it comprises a part forming a main reflector comprising the collector (s) of the main optical system, said main reflector comprising a stiffness rib extending at least along the rear of the main reflector.
  • This rigidity rib makes it possible to give rigidity to the part forming the main reflector, in particular resistance to bending. This is particularly advantageous in the case where, as here, the main reflector comprises several collectors, and where it is more efficient for the production of the light beam to maintain the positioning of these collectors with respect to one another. This is even more advantageous in the case where, as here, the projection lens images the reflective surface of one or each collector.
  • the first object can optionally be combined with this second object.
  • the lighting module according to said first object according to the combination of the previous paragraph or according to said second object, possibly according to the combination of previous paragraph, may include one of the following characteristics, alone or taken in combination:
  • complementary reflector comprising the collector (s) of the first, second and, where appropriate third, complementary optical systems, complementary reflector comprising a rib of complementary rigidity extending at least along the rear of the reflector complementary ; in this case, the advantages of the principle of the stiffness rib apply to this complementary reflector;
  • the rigidity rib (s) also extend over the side edges of the main reflector and / or the complementary reflector;
  • the rigidity rib (s) have a recess towards the collector (s) of the corresponding reflector;
  • the lighting module comprises a light source support comprising a plate and a radiator with a front wall upper to the rear of the plate and transverse to said plate, in particular perpendicular, in particular vertical;
  • the lighting module comprises a light source support comprising a plate and a radiator with a front wall lower than the rear of the plate and transverse to said plate, in particular perpendicular, in particular vertical;
  • the radiator has fins extending rearwardly from said front wall (s);
  • Said front wall is of complementary shape with that of the rigidity rib, in particular, it can comprise a recess of complementary shape and housed in the recess; thus this arrangement makes it possible to increase the size of the fins at the rear of the recess, in particular by distributing the fins over the length of the front wall, and also to place them closer to the light source.
  • FIG 1 is a perspective and exploded view of a lighting module according to the invention
  • FIG 2 schematically shows the light image of the lighting module of Figure 1 according to a first configuration
  • FIG 3 schematically shows the light image of the lighting module of Figure 1 in a second configuration
  • FIG 4 schematically shows the light image of the lighting module of Figure 1 in a third configuration
  • FIG 5 schematically shows the light image of the lighting module of Figure 1 according to an alternative, the first and second configurations of Figures 2 and 3;
  • FIG 6 shows schematically the path of the light rays of the lighting module of Figure 1;
  • FIG 7 shows schematically the light images of the lighting module of Figure 6.
  • FIG 8 shows, in rear perspective, a collector of the lighting device of Figure 1 and, facing from the front, the illuminated surface of said collector.
  • FIG. 1 is an exploded view of a lighting module according to the invention.
  • lighting module is meant a unitary assembly, that is to say where all the optical parts are assembled to each other so as to be able to perform one or more lighting or light signaling functions.
  • Such a module is intended to be mounted in a box closed by a glass, optionally with one or more other light or lighting modules.
  • the lighting module 2 essentially comprises a light source support 4 providing, in addition, a function of cooling said sources, light sources 6 and 8 arranged on the light source support 4, an upper reflector 10 and a lower reflector 12 , and a projection lens 14. More specifically, the source support 4 comprises a plate 4.1 with an upper face and a lower face opposite the upper face, and a heat exchanger 4.2 which can take the form of a finned radiator.
  • the light source support 4 is advantageously made of a metallic material or at least a heat conductor. It is advantageously in one piece for reasons of simplicity of manufacture, it can however also be made of several parts assembled together.
  • the light source 6 comprises a printed circuit board 6.1 and light semiconductor components, in this case light sources.
  • Light-emitting diodes 6.2 forming light points, arranged on the printed circuit board 6.1.
  • These light semiconductor components 6.2 are advantageously electrically interconnected so as to be switched on at the same time, that is to say in a grouped manner, thus forming a single light source 6.
  • the light sources 8 comprise a circuit board. 8.1 and luminous semiconductor components 8.2 (not visible), in this case light-emitting diodes, arranged on the printed circuit board 8.1.
  • the light semiconductor components 8.2 of the lower light sources 8 are separately electrically connected so that they can be turned on independently, thus forming a plurality of light sources 8.
  • the lower reflector 12 is associated with the lower light sources 8. It comprises several collectors 12.1, 12.2 and 12.3, with reflecting surface, advantageously one collector per light semiconductor component of the light sources 8.
  • the upper reflector 10 is associated with the upper light source 6. Similar to the lower reflector 12, it comprises several collectors 10.1, 10.2, 10.3, 10.4 with reflecting surface, advantageously one collector per light semiconductor component 6.2 of the light source 6. The collectors are not visible but are similar to those of the lower reflector 12.
  • the collectors of the upper 10 and lower 12 reflectors advantageously form caps or shells with a reflecting surface of elliptical or parabolic profile.
  • the reflecting surface is advantageously a surface of revolution of the elliptical or parabolic profile, advantageously over a sector of the order of 180 °.
  • collector 12.3 of the lower reflector 12 forms a double cap, this collector then being associated with two light semiconductor components 8.2 forming one of the light sources 8.
  • the projection lens 14 is advantageously common to the upper light source 6 and to the lower light sources 8.
  • the upper light source 6, the upper reflector 10 and the projection lens 14 form a main optical system configured to form a main light beam along an optical axis of the module, with an upper horizontal cutoff.
  • the upper horizontal cut-off is flat and the beam in question is extended in width.
  • Each of the light semiconductor components together with the corresponding collector forms a sub-beam, these sub-beams adding to form the main beam.
  • the lower light sources 8 and the respective collectors of the lower reflector 12 form optical systems complementary to the main optical system, configured to form complementary light beams along the optical axis of the module, narrower than the main light beam and with upper cuts. flat or oblique, making it possible to produce with the main light beam a light beam with an upper horizontal cut-off in accordance with the regulations in force, namely with an upper horizontal cut-off with an oblique central portion for driving on the left, for driving on the right and with a flat top horizontal cut-off.
  • FIGs 2 to 5 illustrate different light beams formed by the lighting module of Figure 1, more particularly by the combination of the beam main light formed by the main optical system 6, 10 and 14, with one or more of the complementary light beams formed by the complementary optical systems 8, 12 and 14.
  • Figure 2 illustrates the light image of a top-cut light beam with an oblique central portion for right-hand drive.
  • This is a nighttime vehicle lighting function with oncoming traffic called low beam, or also commonly called “code” ("low beam” in English).
  • the light beam consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of FIG. 1, and of a complementary light beam for right-hand drive 18 with an oblique upper cutoff formed by a complementary optical system 8, 12 and 14 corresponding to the lighting module of FIG. 1.
  • the H axis corresponds to the horizontal at the level of the optical axis and the V axis corresponds to the vertical centered on l optical axis.
  • the main light beam 16 is very wide and has a substantially flat upper horizontal cut-off, in particular at the center, essentially aligned with the H axis, while the complementary light beam for right-hand drive 18 has a substantially smaller width.
  • the upper cut-off comprises an oblique central part 18.1 connecting a left horizontal cut-off 18.2 essentially aligned with the upper horizontal cut-off of the main light beam 16 with a right horizontal cut-off 18.3 at a higher level compared to the upper horizontal cut-off of the main light beam 16.
  • FIG. 3 illustrates the light image of a light beam with upper cut-off with an oblique central portion for left-hand drive. This is also a so-called low beam or "code" lighting function.
  • the light beam of Figure 3 consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of Figure 1, and a complementary light beam here being a complementary light beam for left-hand drive 20 with an oblique upper cut-off formed by a complementary optical system 8, 12 and 14 corresponding to the lighting module of FIG. 1.
  • the complementary optical system 8 , 12 and 14 in question is distinct from that forming the complementary light beam for right-hand drive 18 of figure 2.
  • the main light beam 16 is very wide and has an upper horizontal cut-off which is essentially flat, in particular in the center, essentially aligned with the 'axis H whereas the complementary light beam for driving on the left 20 has a substantially smaller width and an upper cut-off with an oblique central part 20.1 connecting a right horizontal cut-off 20.2 essentially aligned with the upper horizontal cut-off of the main light beam 16, with a left horizontal cutoff 20.3 at a higher level than the upper horizontal cutoff of the main light beam 16.
  • Figure 4 illustrates the light image of a light beam with a flat top cutoff. This is also a so-called low beam or "code" lighting function. Similar to the light beams of Figures 2 and 3, the light beam of Figure 4 consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of Figure 1, and a complementary light beam, in this case a complementary light beam with a flat top cutoff. It can be observed that the main light beam 16 is very wide and has an upper cut which is essentially flat and horizontal, in particular at the center, essentially aligned with the H axis, similarly to Figures 2 and 3, while the complementary light beam 22 is significantly narrower and has a flat top cutout.
  • the additional light beam 22 makes it possible to add light at the center and near the cut-off of the light beam, in accordance with the requirements of the regulations, in particular that in force in the United States of America (standard FMVSS 108, acronym of "Federal Motor Vehicle Safety Standard 108 ”).
  • FIG. 5 illustrates several light images with upper horizontal cut-off, similar to those of FIGS. 2 to 4 where, however, the complementary light beam with flat upper cut-off 22 is systematically superimposed on the complementary light beams with upper oblique cut-off driven on the right and driven on the left, respectively.
  • the complementary light beam with flat upper cut-off 22 completes the light beam complementary with oblique upper cut. The latter can then have less light in its lower part, for example have a higher lower cutoff.
  • Figure 6 is a schematic representation of the path of light rays from the lighting module of Figure 1.
  • the main optical system 6, 10 and 14 and one of the complementary optical systems 8, 12, 14 are shown.
  • the projection lens 14 comprises a sub-lens 14.1 associated with the collectors 10.1, 10.2, 10.3 and 10.4, and with the light semiconductor components 6.1.
  • This sub-lens 14.1 and the collector 10.1, 10.2, 10.3 or 10.4 illustrated are aligned along an optical axis 24.1 of the main optical system.
  • the sub-lens 14.1 is a projection lens with a focus 14.3 located at a rear edge A of the reflective surface of the collector 10.1, 10.2, 10.3 or 10.4.
  • the trailing edge A of the reflective surface is imaged sharply to form a sharp upper cut-off edge while the leading edge B is imaged less sharply and thus forms a more blurred lower cut-off edge.
  • the focus 14.3 of the projection sub-lens 14.1 is disposed more near the rear edge A than the front edge B.
  • the projection sub-lens 14.1 has a certain depth of field. The depth of field is sufficient to clearly image a portion of the reflecting surface, said portion preferably corresponding to at least 30%, and more preferably to all, of the extent along the optical axis of the reflecting surface.
  • 10.2, 10.3 or 10.4 has a curved profile in a horizontal plane, meaning that the edge in question has a distance to the projection sub-lens 14.1 which is variable. Its depth of field ensures sufficient sharpness of the upper cut-off edge. It should be noted that in the configuration of FIG. 6 where the focus 14.3 is on the rear edge A, at a central position of said edge, it is the central part of the upper cut-off edge of the light beam 16 which will be the sharpest. It is however understood that other positions of the hearth 14.3 are possible, in particular further forward at a distance from the rear edge A.
  • the sub-lens 14.1 associated with said system may have a focus which is not a point but in the form of a segment, advantageously curved.
  • the collectors 10.1, 10.2, 10.3 and 10.4 can then be placed side by side according to this curved profile.
  • the sub-lens 14.1 can comprise different portions with respective focal points associated with the collectors 10.1, 10.2, 10.3 and 10.4.
  • the complementary optical system 8, 12 and 14 comprises the sub-lens 14.2 aligned with the optical axis 24.2 of said system and having a focus 14.4 located in this case on the reflecting surface of the collector 12.1, 12.2 or 12.3, at a distance from the edge rear C and the front edge D of said surface.
  • the projection sub-lens are the sub-lens 14.2 aligned with the optical axis 24.2 of said system and having a focus 14.4 located in this case on the reflecting surface of the collector 12.1, 12.2 or 12.3, at a distance from the edge rear C and the front edge D of said surface.
  • the focus 14.4 can be positioned further forward or backward, depending on the depth of field of the sub-lens 14.2 and the sharpness desired for the lens. the upper and lower cuts.
  • the projection sub-lens 14.2 can include several adjacent zones, in this case three zones, each having a distinct focus associated with one of the collectors 12.1, 12.2 and 12.3.
  • the sub-lenses 14.1 and 14.2 can be assembled to each other and / or to the rest of the lighting module so as to form a full-fledged projection lens 14, or alternatively they may be integral to form a lens projection 14 in one piece.
  • FIG. 7 schematically illustrates the images of the light beams of the optical systems of FIG. 6, similarly to FIGS. 2 to 5.
  • the upper and lower cut-off edges denoted A and B, respectively, of the image can be observed.
  • light of the main light beam 16 formed by the rear edges A and front B, respectively, of the reflecting surfaces of the collectors 10.1, 10.2, 10.3 and 10.4 of the reflector 10.
  • D and C the upper and lower cut-off edges denoted D and C , respectively, of one of the complementary light beams 18, 20 and 22, formed by the front D and rear C edges of the reflecting surface of the corresponding collector 12.1, 12.2 or 12.3.
  • Figure 8 illustrates a collector of the main optical system, left in rear perspective and right projected by the projection lens onto a screen.
  • the representation on the left we can see the rear A and front B edges of the reflecting surface of one of the collectors 10.1, 10.2, 10.3 and 10.4.
  • the representation on the right is the illuminated reflective surface seen from the front of the projection lens, i.e. through said lens.
  • the passage of light rays through the projection lens causes the image to invert. It is for this reason that the image in question has a top cut A flat corresponding to the trailing edge A of the reflective surface of the collector, which is in a plane, in this case horizontal.
  • the lower edge B of the image corresponds to the front edge B of the reflective surface of the collector, this edge having a curvature in the form of a semicircle with an opening directed downwards, this image then being inverted in the image produced.
  • the reflecting surface of the collector is not necessarily a surface of revolution around the optical axis 24.1 of the main optical system. It may present deviations from such a definition, in particular with a view to spreading the lower cut-off of the image of the main light beam.
  • these light sources are oriented to illuminate in the same direction or in non-opposite directions. It is in fact conceivable that the lower light sources 8, or at least one of them, are oriented so as to illuminate in the same direction as the upper light source 6. This amounts, in FIG. 6, to inverting the optical system. complementary 8, 12, 14.2 by 180 ° with respect to the optical axis 24.2. An adaptation or optimization of the position of the focus 14.4 can be advantageous, in particular in order to concentrate the sharpness on another cut-off edge.
  • the projection lens 14 comprises sub-lenses 14.1 and 14.2 for the main optical system and the complementary optical systems.
  • the sub-lens 14.2 comprises several adjacent zones associated with the complementary optical systems respectively.
  • the arrangement of the sub-lens 14.1 and of the zones of the sub-lens 14.2 can take different configurations, in particular a configuration where the sub-lens 14.1 associated with the main optical system is located at the top of the lens 14 and the adjacent zones of the sub-lens 14.2 associated with the complementary optical systems extend horizontally at the bottom of the lens 14, directly under the sub-lens 14.1.
  • Another possible configuration is a configuration similar to the previous one where, however, the zone of the sub-lens 14.2, associated with the complementary optical system forming the complementary light beam with a flat upper cut-off 22 is located horizontally next to the sub-lens 14.1 associated with the. main optical system.
  • the upper reflector 10 can be produced with a stiffness rib 10.5 extending at least along the rear of the part forming the upper reflector 10.
  • This stiffness rib 10.5 makes it possible to give rigidity to the part forming the upper reflector 10, in particular resistance to bending.
  • the upper reflector 10 comprises several collectors 10.1, 10.2, 10.3, 10.4, and where the production of the light beam is optimized by maintaining the positioning of these collectors relative to each other. This is all the more advantageous in the case where, as here, the projection lens 14 images the reflecting surface of one or each collector 10.1, 10.2, 10.3,
  • the rigidity rib 10.5 can, as here, extend over the lateral edges of the first reflector 10 to reinforce its rigidity.
  • This rigidity rib 10.5 is therefore here behind the reflecting surfaces of the collectors 10.1, 10.2, 10.3, 10. 4 and can, as here, have a recess 10.6 towards these reflecting surfaces.
  • the radiator 4.2 may include an upper front wall 4.5 at the rear of the plate 4.1 and transverse thereto, in particular perpendicular.
  • this upper front wall 4.5 is vertical.
  • the fins 4.3 of the radiator 4.2 extend vertically and rearwardly from this upper front wall 4.5.
  • the upper front wall 4.5 is of complementary shape with that of the rigidity rib 10.5.
  • it comprises a recess 4.4 of complementary shape and housed in the recess 10.6.
  • the fins 4.3 are therefore longer than the others and extend more towards the light emitting diodes 6.2.
  • this arrangement makes it possible to increase the size of some of the fins and also to place them closer to the LEDs, which improves and accelerates their cooling.
  • this stiffness rib 10.5, its recess 10.6, the upper front wall 4.5, its recess 4.4 and the fins 4.3 at the rear of this upper front wall 4.5 therefore has three functions: rigidity of the part forming the upper reflector 10, increase of the heat exchange surface and bringing together of the fins 4.3 of the light-emitting diodes 6.2.
  • This principle can also be applied to complementary optical systems, and in particular to the lower reflector 12, which can also include at the rear a rigidity rib, with a recess in which the recess of a lower front wall of the radiator is housed. 4.2, and the fins which project backwards.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Arrangements Of Lighting Devices For Vehicle Interiors, Mounting And Supporting Thereof, Circuits Therefore (AREA)

Abstract

The invention relates to a lighting module (2), especially for a motor vehicle, comprising a main optical system (6, 10, 14) able to form a main light beam along an optical axis of the module, this beam containing a horizontal upper cutoff; a first complementary optical system (8, 12.1, 14) able to form a first complementary light beam along the optical axis of the lighting module, this beam being narrower than the main light beam and containing an oblique upper cutoff; and a second complementary optical system (8, 12.2, 14) able to form a second complementary light beam along the optical axis of the module, this beam being narrower than the main light beam and containing an oblique upper cutoff opposite to the oblique upper cutoff of the first complementary light beam.

Description

DESCRIPTION DESCRIPTION
TITRE : MODULE D’ECLAIRAGE POUR VEHICULE A COUPURE MODULABLE ENTRE CONDUITE A GAUCHE ET CONDUITE A DROITE TITLE: LIGHTING MODULE FOR VEHICLE WITH MODULAR CUT-OFF BETWEEN LEFT DRIVE AND RIGHT DRIVE
Domaine technique Technical area
L’invention a trait au domaine de l’éclairage, en particulier de l’éclairage pour véhicule automobile. The invention relates to the field of lighting, in particular lighting for motor vehicles.
Technique antérieure Prior art
La fonction d’éclairage automobile de nuit avec une circulation en sens inverse, couramment appelée « code » (« low beam » en anglais), présente une coupure horizontale supérieure, conformément aux réglementations en vigueur. La réglementation européenne prévoit cependant une coupure horizontale avec une portion oblique au centre du faisceau, de manière à ce qu’une moitié gauche ou droite du faisceau lumineux présente une coupure horizontale inférieure à l’autre moitié. Plus particulièrement, pour les pays à conduite à droite, c’est-à-dire où le poste de conduite est à gauche du véhicule, la moitié gauche du faisceau lumineux est inférieure à la moitié droite. Inversement, dans les pays à conduite à gauche, c’est-à-dire où le poste de conduite est à droite du véhicule, la moitié gauche du faisceau lumineux est supérieure à la moitié droite. La réglementation américaine prévoit quant à elle une coupure horizontale supérieure plate, c’est-à-dire sans portion oblique. Cela signifie que les projecteurs automobiles doivent être configurés différemment en fonction de ces territoires. The night vehicle lighting function with oncoming traffic, commonly referred to as a "low beam" (code), has a higher horizontal cutoff, in accordance with applicable regulations. However, European regulations provide for a horizontal cutoff with an oblique portion in the center of the beam, so that a left or right half of the light beam has a horizontal cutoff less than the other half. More particularly, for right-hand drive countries, i.e. where the driving position is on the left of the vehicle, the left half of the light beam is less than the right half. Conversely, in countries with left-hand drive, i.e. where the driving position is on the right of the vehicle, the left half of the light beam is greater than the right half. US regulations provide for a flat upper horizontal cut-off, that is to say without an oblique portion. This means that automotive headlamps have to be configured differently depending on these territories.
Le document de brevet publié US 2018180246 A1 divulgue un projecteur automobile comprenant un écran disposé dans le chemin optique des rayons lumineux formant un faisceau lumineux à coupure, et dont la transmittance est variable localement, comme par exemple un écran à cristaux liquides, couramment désigné par l’acronyme LCD (« Liquid Crystal Display »). Plus particulièrement, les pixels de cet écran peuvent être commandés spécifiquement pour réaliser les coupures horizontales supérieures susmentionnées pour conduite à gauche et conduite à droite, respectivement, c’est-à-dire avec des portions obliques centrales opposées. En d’autres termes, cet enseignement prévoit une configuration par commande électrique du projecteur pour différentes réglementations, en particulier conduite à gauche et conduite à droite. Cependant la présence de l’écran dont la transmittance est variable localement est coûteuse et présente aussi l’inconvénient de générer des pertes de lumière importantes, dues à la transmittance maximale limitée. The published patent document US 2018180246 A1 discloses an automotive headlight comprising a screen arranged in the optical path of the light rays forming a cut-off light beam, and whose transmittance is locally variable, such as for example a liquid crystal screen, commonly designated by the acronym LCD ("Liquid Crystal Display"). More particularly, the pixels of this screen can be specifically controlled to achieve the above-mentioned upper horizontal cuts for left-hand drive and right-hand drive, respectively, i.e. with opposing central oblique portions. In other words, this teaching provides for an electrically controlled configuration of the projector for different regulations, in particular conducted at left and right hand drive. However, the presence of the screen, the transmittance of which is locally variable, is expensive and also has the drawback of generating significant light losses, due to the limited maximum transmittance.
Exposé de l'invention Disclosure of the invention
L’invention a pour objectif de pallier au moins un des inconvénients de l’état de la technique susmentionné. Plus particulièrement, l’invention a pour objectif de permettre une configuration d’un dispositif d’éclairage formant un faisceau lumineux à coupure suivant différentes réglementations en vigueur, et ce de manière efficace et économique. The object of the invention is to overcome at least one of the drawbacks of the aforementioned prior art. More particularly, the object of the invention is to allow a configuration of a lighting device forming a cut-off light beam according to various regulations in force, in an efficient and economical manner.
L’invention a pour premier objet un module d’éclairage, notamment pour véhicule automobile, comprenant un système optique principal apte à former un faisceau lumineux principal suivant un axe optique du module, avec une coupure horizontale supérieure ; un premier système optique complémentaire apte à former un premier faisceau lumineux complémentaire suivant l’axe optique du module d’éclairage, plus étroit que le faisceau lumineux principal et avec une coupure supérieure oblique ; remarquable en ce que le module d’éclairage comprend, en outre, un deuxième système optique complémentaire apte à former un deuxième faisceau lumineux complémentaire suivant l’axe optique du module, plus étroit que le faisceau lumineux principal et avec une coupure supérieure oblique opposée à la coupure supérieure oblique du premier faisceau lumineux complémentaire. The first object of the invention is a lighting module, in particular for a motor vehicle, comprising a main optical system capable of forming a main light beam along an optical axis of the module, with an upper horizontal cutoff; a first complementary optical system capable of forming a first complementary light beam along the optical axis of the lighting module, narrower than the main light beam and with an upper oblique cutoff; remarkable in that the lighting module further comprises a second complementary optical system capable of forming a second complementary light beam along the optical axis of the module, narrower than the main light beam and with an oblique upper cutoff opposite to the upper oblique cut-off of the first complementary light beam.
Par coupure supérieure oblique opposée à la coupure supérieure oblique du premier faisceau lumineux complémentaire, on entend que l’inclinaison de la coupure oblique du deuxième faisceau lumineux complémentaire, par rapport à une direction verticale, est opposée à celle de la coupure supérieure oblique du premier faisceau lumineux complémentaire. L’inclinaison est avantageusement supérieure à 30° et/ou inférieure à 60°. By upper oblique cutoff opposite the upper oblique cutoff of the first complementary light beam, it is meant that the inclination of the oblique cutoff of the second complementary light beam, with respect to a vertical direction, is opposite to that of the upper oblique cutoff of the first additional light beam. The inclination is advantageously greater than 30 ° and / or less than 60 °.
Selon un mode avantageux de l’invention, les coupures supérieures des premier et deuxième faisceaux complémentaires comprennent, chacune, de part et d’autre de la coupure oblique, une coupure horizontale gauche et une coupure horizontale droite, lesdites coupures horizontales gauche et droite étant décalées verticalement par la coupure oblique et ce de manière opposées entre les premier deuxième faisceaux complémentaires. According to an advantageous embodiment of the invention, the upper cuts of the first and second complementary beams each comprise, on either side of the oblique cut-off, a left horizontal cut-off and a right horizontal cut-off, said left and right horizontal cuts being vertically offset by the oblique cut and in an opposite manner between the first second complementary beams.
Selon un mode avantageux de l’invention, le module d’éclairage comprend, en outre, un troisième système optique complémentaire apte à former un troisième faisceau lumineux complémentaire suivant l’axe optique du module, plus étroit que le faisceau lumineux principal et avec une coupure supérieure horizontale. According to an advantageous embodiment of the invention, the lighting module further comprises a third complementary optical system capable of forming a third complementary light beam along the optical axis of the module, narrower than the main light beam and with a horizontal upper cut-off.
Selon un mode avantageux de l’invention, le module d’éclairage est configuré pour que le troisième système optique ne soit actif qu’en alternative à l’un des premier et deuxième systèmes optiques, ou en complément à l’un des premier et deuxième systèmes optiques. According to an advantageous embodiment of the invention, the lighting module is configured so that the third optical system is only active as an alternative to one of the first and second optical systems, or in addition to one of the first and second optical systems. second optical systems.
Selon un mode avantageux de l’invention, le module d’éclairage est configuré pour que les premier et deuxième systèmes optiques complémentaires ne soient actifs que de manière alternative. According to an advantageous embodiment of the invention, the lighting module is configured so that the first and second complementary optical systems are only active alternately.
Selon un mode avantageux de l’invention, chacun des premiers, deuxième et, le cas échéant troisième, faisceaux lumineux complémentaires présente, en outre, une coupure horizontale inférieure. According to an advantageous embodiment of the invention, each of the first, second and, where appropriate third, additional light beams also has a lower horizontal cutoff.
Selon un mode avantageux de l’invention, au moins un ou chacun des premier, deuxième et, le cas échéant troisième, systèmes optiques complémentaires comprend une source lumineuse, un collecteur avec surface réfléchissante associé à ladite source lumineuse pour former le faisceau lumineux complémentaire correspondant. According to an advantageous embodiment of the invention, at least one or each of the first, second and, where appropriate third, complementary optical systems comprises a light source, a collector with reflecting surface associated with said light source to form the corresponding complementary light beam .
Selon un mode avantageux de l’invention, le module d’éclairage comprend un dispositif de projection des premier, deuxième et, le cas échéant troisième, faisceaux lumineux complémentaires, configuré pour former une image de la surface réfléchissante du ou de chacun des collecteurs. Par former une image on entend que des conditions de stigmatisme sont présentes. According to an advantageous embodiment of the invention, the lighting module comprises a device for projecting the first, second and, where appropriate third, complementary light beams, configured to form an image of the reflecting surface of the or each of the collectors. By forming an image we mean that conditions of stigmatism are present.
Selon un mode avantageux de l’invention, la ou chacune des sources lumineuses est configurée pour émettre les rayons lumineux dans une direction principale formant un angle compris entre 65° et 115° par rapport à l’axe optique, de préférence perpendiculaire à l’axe optique. Selon un mode avantageux de l’invention, la ou au moins une des sources lumineuses est configurée pour émettre les rayons lumineux vers le bas et la surface réfléchissante du collecteur correspondant forme une calotte dirigée vers le haut, lorsque le module est en position opérationnelle. According to an advantageous embodiment of the invention, the or each of the light sources is configured to emit the light rays in a main direction forming an angle of between 65 ° and 115 ° with respect to the optical axis, preferably perpendicular to the optical axis. According to an advantageous embodiment of the invention, the or at least one of the light sources is configured to emit the light rays downwards and the reflecting surface of the corresponding collector forms a cap directed upwards, when the module is in the operational position.
Selon un mode avantageux de l’invention, le dispositif de projection présente un foyer situé sur la surface réfléchissante du ou de chacun des collecteurs correspondants, à distance et à l’avant d’un bord arrière de ladite surface réfléchissante. According to an advantageous embodiment of the invention, the projection device has a focus located on the reflecting surface of the or each of the corresponding collectors, at a distance and in front of a rear edge of said reflecting surface.
Selon un mode avantageux de l’invention, la ou au moins une des sources lumineuses est configurée pour émettre les rayons lumineux vers le haut et la surface réfléchissante du collecteur correspondant forme une calotte dirigée vers le bas, lorsque le module est en position opérationnelle. According to an advantageous embodiment of the invention, the or at least one of the light sources is configured to emit the light rays upwards and the reflecting surface of the corresponding collector forms a cap directed downwards, when the module is in the operational position.
Selon un mode avantageux de l’invention, le dispositif de projection présente un foyer situé sur la surface réfléchissante du ou de chacun des collecteurs correspondants, à un bord arrière de ladite surface réfléchissante. According to an advantageous embodiment of the invention, the projection device has a focus located on the reflecting surface of the or each of the corresponding collectors, at a rear edge of said reflecting surface.
Selon un mode avantageux de l’invention, le système optique principal comprend une source lumineuse configurée pour émettre les rayons lumineux vers le haut, au moins un collecteur avec une surface réfléchissante formant une calotte dirigée vers le bas, associée à ladite source lumineuse pour former le faisceau lumineux principal, le module d’éclairage comprend un dispositif de projection configuré pour former une image de la surface réfléchissante de l’au moins un collecteur. Par former une image on entend que des conditions de stigmatisme sont présentes.According to an advantageous embodiment of the invention, the main optical system comprises a light source configured to emit the light rays upwards, at least one collector with a reflecting surface forming a cap directed downwards, associated with said light source to form the main light beam, the lighting module comprises a projection device configured to form an image of the reflecting surface of the at least one collector. By forming an image we mean that conditions of stigmatism are present.
Selon un mode avantageux de l’invention, la source lumineuse du système optique principal comprend plusieurs composants semi-conducteurs lumineux associés chacun à un des collecteurs dudit système optique principal. According to an advantageous embodiment of the invention, the light source of the main optical system comprises several light semiconductor components each associated with one of the collectors of said main optical system.
Les mesures de l’invention sont intéressantes en ce qu’elles permettent de réaliser un module d’éclairage avec une fonction d’éclairage à coupure supérieure qui peut prendre diverses configurations, en l’occurrence coupure oblique conduite à droite, coupure oblique conduite à gauche et coupure plate, par simple activation électrique du ou des systèmes optiques complémentaires correspondants. De par l’utilisation de collecteurs dont les surfaces réfléchissantes sont imagées, le module est particulièrement compact et de construction simple. Les bords de coupures sont assurés par les bords avant et/ou arrière des surfaces réfléchissantes des collecteurs. The measures of the invention are advantageous in that they make it possible to produce a lighting module with a lighting function with higher cut-off which can take various configurations, in this case oblique cut-off drive on the right, oblique cut-off driven at left and flat cut-off, by simple electrical activation of the corresponding complementary optical system (s). Through the use of collectors whose reflecting surfaces are imaged, the module is particularly compact and simple in construction. The cut-off edges are provided by the front and / or rear edges of the reflective surfaces of the collectors.
En dehors de ces problématique, la présente demande vise un deuxième objet relatif à une autre invention, ce deuxième objet pouvant être éventuellement combiné avec le premier objet décrit ci-dessus dans ses différents modes. Apart from these problems, the present application aims at a second object relating to another invention, this second object possibly being combined with the first object described above in its various modes.
Ce dit deuxième objet est un module d’éclairage, notamment pour véhicule automobile, comprenant un système optique principal apte à former un faisceau lumineux principal suivant un axe optique du module, avec une coupure horizontale supérieure ; un premier système optique complémentaire apte à former un premier faisceau lumineux complémentaire suivant l’axe optique du module d’éclairage, plus étroit que le faisceau lumineux principal et avec une coupure supérieure oblique ; remarquable en ce que le système optique principal comprend une source lumineuse configurée pour émettre les rayons lumineux vers le haut, au moins un collecteur avec une surface réfléchissante formant une calotte dirigée vers le bas, associée à ladite source lumineuse pour former le faisceau lumineux principal, le module d’éclairage comprenant un dispositif de projection configuré pour former une image de la surface réfléchissante de l’au moins un collecteur, et en ce qu’il comprend une pièce formant un réflecteur principal comprenant le ou les collecteurs du système optique principal, ledit réflecteur principal comprenant une nervure de rigidité s’étendant au moins le long de l’arrière du réflecteur principal. This said second object is a lighting module, in particular for a motor vehicle, comprising a main optical system capable of forming a main light beam along an optical axis of the module, with an upper horizontal cutoff; a first complementary optical system capable of forming a first complementary light beam along the optical axis of the lighting module, narrower than the main light beam and with an upper oblique cutoff; remarkable in that the main optical system comprises a light source configured to emit the light rays upwards, at least one collector with a reflecting surface forming a cap directed downwards, associated with said light source to form the main light beam, the lighting module comprising a projection device configured to form an image of the reflecting surface of the at least one collector, and in that it comprises a part forming a main reflector comprising the collector (s) of the main optical system, said main reflector comprising a stiffness rib extending at least along the rear of the main reflector.
Cette nervure de rigidité permet de donner de la rigidité à la pièce formant le réflecteur principal, en particulier une résistance à la flexion. Ceci est particulièrement avantageux dans le cas où, comme ici, le réflecteur principal comprend plusieurs collecteurs, et où il est plus performant pour la réalisation du faisceau lumineux de maintenir le positionnement de ces collecteurs les uns par rapport aux autres. C’est d’autant plus avantageux dans le cas où, comme ici, la lentille de projection image la surface réfléchissante de l’un ou de chaque collecteur.This rigidity rib makes it possible to give rigidity to the part forming the main reflector, in particular resistance to bending. This is particularly advantageous in the case where, as here, the main reflector comprises several collectors, and where it is more efficient for the production of the light beam to maintain the positioning of these collectors with respect to one another. This is even more advantageous in the case where, as here, the projection lens images the reflective surface of one or each collector.
Le premier objet peut éventuellement être combiné à ce deuxième objet. The first object can optionally be combined with this second object.
Le module d’éclairage selon ledit premier objet selon la combinaison du paragraphe précédent ou selon ledit deuxième objet, éventuellement selon la combinaison du paragraphe précédent, peut comprendre l’une des caractéristiques ci-après, seule ou prise en combinaison : The lighting module according to said first object according to the combination of the previous paragraph or according to said second object, possibly according to the combination of previous paragraph, may include one of the following characteristics, alone or taken in combination:
- il comprend une pièce formant un réflecteur complémentaire comprenant le ou les collecteurs des premier, deuxième et, le cas échéant troisième, systèmes optiques complémentaires, réflecteur complémentaire comprenant une nervure de rigidité complémentaire s’étendant au moins le long de l’arrière du réflecteur complémentaire ; dans ce cas, les avantages du principe de la nervure de rigidité s’appliquent à ce réflecteur complémentaire ; - it comprises a part forming a complementary reflector comprising the collector (s) of the first, second and, where appropriate third, complementary optical systems, complementary reflector comprising a rib of complementary rigidity extending at least along the rear of the reflector complementary ; in this case, the advantages of the principle of the stiffness rib apply to this complementary reflector;
- la ou les nervures de rigidité s’étendent également sur les bords latéraux du réflecteur principal et/ou du réflecteur complémentaire ; - the rigidity rib (s) also extend over the side edges of the main reflector and / or the complementary reflector;
- la ou les nervures de rigidité présentent un renfoncement vers le ou les collecteurs du réflecteur correspondant; the rigidity rib (s) have a recess towards the collector (s) of the corresponding reflector;
- le module d’éclairage comprend un support de la source lumineuse comprenant une platine et un radiateur avec une paroi avant supérieure à l’arrière de la platine et transversale à ladite platine, notamment perpendiculaire, notamment verticale ;- The lighting module comprises a light source support comprising a plate and a radiator with a front wall upper to the rear of the plate and transverse to said plate, in particular perpendicular, in particular vertical;
- le module d’éclairage comprend un support de la source lumineuse comprenant une platine et un radiateur avec une paroi avant inférieure à l’arrière de la platine et transversale à ladite platine, notamment perpendiculaire, notamment verticale ;- The lighting module comprises a light source support comprising a plate and a radiator with a front wall lower than the rear of the plate and transverse to said plate, in particular perpendicular, in particular vertical;
- le radiateur présente des ailettes s’étendant vers l’arrière à partir de ladite ou desdites parois avant ; - the radiator has fins extending rearwardly from said front wall (s);
- ladite paroi avant est de forme complémentaire avec celle de la nervure de rigidité, en particulier, elle peut comprendre un décrochement de forme complémentaire et logé dans le renfoncement ; ainsi cet agencement permet d'augmenter la taille des ailettes à l’arrière du décrochement, notamment en répartissant les ailettes sur la longueur de la paroi avant, et aussi de les disposer plus près de la source de lumière. - Said front wall is of complementary shape with that of the rigidity rib, in particular, it can comprise a recess of complementary shape and housed in the recess; thus this arrangement makes it possible to increase the size of the fins at the rear of the recess, in particular by distributing the fins over the length of the front wall, and also to place them closer to the light source.
Brève description des dessins Brief description of the drawings
[Fig 1] est une vue en perspective et éclatée d’un module d’éclairage conforme à l’invention ; [Fig 2] représente schématiquement l’image lumineuse du module d’éclairage de la figure 1 suivant une première configuration ; [Fig 1] is a perspective and exploded view of a lighting module according to the invention; [Fig 2] schematically shows the light image of the lighting module of Figure 1 according to a first configuration;
[Fig 3] représente schématiquement l’image lumineuse du module d’éclairage de la figure 1 suivant une deuxième configuration ; [Fig 3] schematically shows the light image of the lighting module of Figure 1 in a second configuration;
[Fig 4] représente schématiquement l’image lumineuse du module d’éclairage de la figure 1 suivant une troisième configuration ; [Fig 4] schematically shows the light image of the lighting module of Figure 1 in a third configuration;
[Fig 5] représente schématiquement l’image lumineuse du module d’éclairage de la figure 1 suivant une alternative, des première et deuxième configurations des figures 2 et 3 ; [Fig 5] schematically shows the light image of the lighting module of Figure 1 according to an alternative, the first and second configurations of Figures 2 and 3;
[Fig 6] représente schématique le parcours des rayons lumineux du module d’éclairage de la figure 1 ; [Fig 6] shows schematically the path of the light rays of the lighting module of Figure 1;
[Fig 7] représente schématiquement les images lumineuses du module d’éclairage de la figure 6. [Fig 7] shows schematically the light images of the lighting module of Figure 6.
[Fig 8] représente, en perspective arrière, un collecteur du dispositif d’éclairage de la figure 1 et, de face depuis l’avant, la surface éclairée dudit collecteur. [Fig 8] shows, in rear perspective, a collector of the lighting device of Figure 1 and, facing from the front, the illuminated surface of said collector.
Description détaillée detailed description
Dans la description qui va suivre, les notions « avant » et « arrière » sont à comprendre suivant la direction principale et le sens de propagation des rayons suivant l’axe optique du module d’éclairage. In the following description, the concepts "front" and "rear" are to be understood according to the main direction and the direction of propagation of the rays along the optical axis of the lighting module.
La figure 1 est une vue éclatée d’un module d’éclairage conforme à l’invention. Par module d’éclairage on entend un ensemble unitaire, c’est-à-dire où toutes les pièces optiques sont assemblées les unes aux autres de manière à pouvoir assurer une ou plusieurs fonctions d’éclairage ou de signalisation lumineuse. Un tel module est destiné à être monté dans un boîtier refermé par une glace, éventuellement avec un ou plusieurs autres modules lumineux ou d’éclairage. Figure 1 is an exploded view of a lighting module according to the invention. By lighting module is meant a unitary assembly, that is to say where all the optical parts are assembled to each other so as to be able to perform one or more lighting or light signaling functions. Such a module is intended to be mounted in a box closed by a glass, optionally with one or more other light or lighting modules.
Le module d’éclairage 2 comprend essentiellement un support de sources lumineuses 4 assurant, en outre, une fonction de refroidissement desdites sources, des sources lumineuses 6 et 8 disposées sur le support de sources lumineuses 4, un réflecteur supérieur 10 et un réflecteur inférieur 12, et une lentille de projection 14. Plus spécifiquement, le support de sources 4 comprend une platine 4.1 avec une face supérieure et une face inférieure opposée à la face supérieure, et un échangeur de chaleur 4.2 pouvant prendre la forme d’un radiateur à ailettes. Le support de sources lumineuses 4 est avantageusement en matériau métallique ou du moins conducteur de la chaleur. Il est avantageusement d’une seule pièce pour des raisons de simplicité de fabrication, il peut cependant également être fait de plusieurs pièces assemblées les unes aux autres. The lighting module 2 essentially comprises a light source support 4 providing, in addition, a function of cooling said sources, light sources 6 and 8 arranged on the light source support 4, an upper reflector 10 and a lower reflector 12 , and a projection lens 14. More specifically, the source support 4 comprises a plate 4.1 with an upper face and a lower face opposite the upper face, and a heat exchanger 4.2 which can take the form of a finned radiator. The light source support 4 is advantageously made of a metallic material or at least a heat conductor. It is advantageously in one piece for reasons of simplicity of manufacture, it can however also be made of several parts assembled together.
Sur la face supérieure de la platine 4.1 est disposée la source lumineuse 6 et sur la face inférieure sont disposées les sources lumineuses 8. La source lumineuse 6 comprend une platine à circuit imprimé 6.1 et des composants semi-conducteurs lumineux, en l’occurrence des diodes à électroluminescence 6.2, formant des points lumineux, disposés sur la platine à circuit imprimé 6.1. Ces composants semi- conducteurs lumineux 6.2 sont avantageusement interconnectés électriquement de manière à être allumés en même temps, c’est-à-dire de manière groupée, formant ainsi une seule source lumineuse 6. Similairement, les sources lumineuses 8 comprennent une platine à circuit imprimé 8.1 et des composants semi-conducteurs lumineux 8.2 (non visibles), en l’occurrence des diodes à électroluminescence, disposés sur la platine à circuit imprimé 8.1. Contrairement à la source lumineuse supérieure 6, les composants semi-conducteurs lumineux 8.2 des sources lumineuses inférieures 8 sont connectés électriquement de manière séparée de manière à pouvoir être allumés de manière indépendante, formant ainsi une pluralité de sources lumineuses 8. On the upper face of the plate 4.1 is arranged the light source 6 and on the lower face are arranged the light sources 8. The light source 6 comprises a printed circuit board 6.1 and light semiconductor components, in this case light sources. Light-emitting diodes 6.2, forming light points, arranged on the printed circuit board 6.1. These light semiconductor components 6.2 are advantageously electrically interconnected so as to be switched on at the same time, that is to say in a grouped manner, thus forming a single light source 6. Similarly, the light sources 8 comprise a circuit board. 8.1 and luminous semiconductor components 8.2 (not visible), in this case light-emitting diodes, arranged on the printed circuit board 8.1. Unlike the upper light source 6, the light semiconductor components 8.2 of the lower light sources 8 are separately electrically connected so that they can be turned on independently, thus forming a plurality of light sources 8.
Le réflecteur inférieur 12 est associé aux sources lumineuses inférieures 8. Il comprend plusieurs collecteurs 12.1, 12.2 et 12.3, avec surface réfléchissante, avantageusement un collecteur par composant semi-conducteur lumineux des sources lumineuses 8. The lower reflector 12 is associated with the lower light sources 8. It comprises several collectors 12.1, 12.2 and 12.3, with reflecting surface, advantageously one collector per light semiconductor component of the light sources 8.
Le réflecteur supérieur 10 est associé à la source lumineuse supérieure 6. Similairement au réflecteur inférieur 12, il comprend plusieurs collecteurs 10.1, 10.2, 10.3, 10.4 avec surface réfléchissante, avantageusement un collecteur par composant semi-conducteur lumineux 6.2 de la source lumineuse 6. Les collecteurs ne sont pas visibles mais sont similaires à ceux du réflecteur inférieur 12. Les collecteurs des réflecteurs supérieur 10 et inférieur 12 forment avantageusement des calottes ou coquilles avec une surface réfléchissante de profil elliptique ou parabolique. La surface réfléchissante est avantageusement une surface de révolution du profil elliptique ou parabolique, avantageusement sur un secteur de l’ordre de 180°. The upper reflector 10 is associated with the upper light source 6. Similar to the lower reflector 12, it comprises several collectors 10.1, 10.2, 10.3, 10.4 with reflecting surface, advantageously one collector per light semiconductor component 6.2 of the light source 6. The collectors are not visible but are similar to those of the lower reflector 12. The collectors of the upper 10 and lower 12 reflectors advantageously form caps or shells with a reflecting surface of elliptical or parabolic profile. The reflecting surface is advantageously a surface of revolution of the elliptical or parabolic profile, advantageously over a sector of the order of 180 °.
Il est à noter que le collecteur 12.3 du réflecteur inférieur 12 forme une double calotte, ce collecteur étant alors associé à deux composants semi-conducteurs lumineux 8.2 formant une des sources lumineuses 8. It should be noted that the collector 12.3 of the lower reflector 12 forms a double cap, this collector then being associated with two light semiconductor components 8.2 forming one of the light sources 8.
La lentille de projection 14 est avantageusement commune à la source lumineuse supérieure 6 et aux sources lumineuses inférieures 8. The projection lens 14 is advantageously common to the upper light source 6 and to the lower light sources 8.
La source lumineuse supérieure 6, le réflecteur supérieur 10 et la lentille de projection 14 forment un système optique principal configuré pour former un faisceau lumineux principal suivant un axe optique du module, avec une coupure horizontale supérieure. En l’occurrence la coupure horizontale supérieure est plate et le faisceau en question est étendu en largeur. Chacun des composants semi-conducteurs lumineux forme avec le collecteur correspondant un sous-faisceau, ces sous- faisceaux s’additionnant pour former le faisceau principal. En l’occurrence, ces sous- faisceaux sont au nombre de quatre correspondant au nombre de composants semi- conducteurs lumineux 6.2, étant entendu que ce nombre peut être différent, supérieur ou inférieur. The upper light source 6, the upper reflector 10 and the projection lens 14 form a main optical system configured to form a main light beam along an optical axis of the module, with an upper horizontal cutoff. In this case, the upper horizontal cut-off is flat and the beam in question is extended in width. Each of the light semiconductor components together with the corresponding collector forms a sub-beam, these sub-beams adding to form the main beam. In this case, there are four sub-beams corresponding to the number of light semiconductor components 6.2, it being understood that this number may be different, higher or lower.
Les sources lumineuses inférieures 8 et les collecteurs respectifs du réflecteur inférieur 12 forment des systèmes optiques complémentaires au système optique principal, configurés pour former des faisceaux lumineux complémentaires suivant l’axe optique du module, plus étroits que le faisceau lumineux principal et avec des coupures supérieures plate ou oblique, permettant de réaliser avec le faisceau lumineux principal un faisceau lumineux à coupure horizontale supérieure conforme à la réglementation en vigueur, à savoir avec une coupure horizontale supérieure avec une portion centrale oblique pour conduite à gauche, pour conduite à droite et avec une coupure horizontale supérieure plate. The lower light sources 8 and the respective collectors of the lower reflector 12 form optical systems complementary to the main optical system, configured to form complementary light beams along the optical axis of the module, narrower than the main light beam and with upper cuts. flat or oblique, making it possible to produce with the main light beam a light beam with an upper horizontal cut-off in accordance with the regulations in force, namely with an upper horizontal cut-off with an oblique central portion for driving on the left, for driving on the right and with a flat top horizontal cut-off.
Les figures 2 à 5 illustrent différents faisceaux lumineux formés par le module d’éclairage de la figure 1 , plus particulièrement par la combinaison du faisceau lumineux principal formé par le système optique principal 6, 10 et 14, avec un ou plusieurs des faisceaux lumineux complémentaires formés par les systèmes optiques complémentaires 8, 12 et 14. Figures 2 to 5 illustrate different light beams formed by the lighting module of Figure 1, more particularly by the combination of the beam main light formed by the main optical system 6, 10 and 14, with one or more of the complementary light beams formed by the complementary optical systems 8, 12 and 14.
La figure 2 illustre l’image lumineuse d’un faisceau lumineux à coupure supérieure avec une portion centrale oblique pour conduite à droite. Il s’agit d’une fonction d’éclairage automobile de nuit avec circulation en sens inverse appelée feu de croisement, ou encore couramment appelée « code » (« low beam » en anglais). Le faisceau lumineux est constitué d’un faisceau lumineux principal 16 formé par le système optique principal 6, 10 et 14 du module d’éclairage de la figure 1, et d’un faisceau lumineux complémentaire pour conduite à droite 18 avec une coupure supérieure oblique formée par un système optique complémentaire 8, 12 et 14 correspondant du module d’éclairage de la figure 1. L’axe H correspond à l’horizontale au niveau de l’axe optique et l’axe V correspond à la verticale centrée sur l’axe optique. On peut observer que le faisceau lumineux principal 16 est très large et présente une coupure horizontale supérieure essentiellement plate, en particulier au centre, essentiellement alignée avec l’axe H alors que le faisceau lumineux complémentaire pour conduite à droite 18 présente une largeur sensiblement plus faible. La coupure supérieure comprend une partie centrale oblique 18.1 reliant une coupure horizontale gauche 18.2 essentiellement alignée avec la coupure horizontale supérieure du faisceau lumineux principal 16 avec une coupure horizontale droite 18.3 à un niveau supérieur par rapport à la coupure horizontale supérieure du faisceau lumineux principal 16. Figure 2 illustrates the light image of a top-cut light beam with an oblique central portion for right-hand drive. This is a nighttime vehicle lighting function with oncoming traffic called low beam, or also commonly called "code" ("low beam" in English). The light beam consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of FIG. 1, and of a complementary light beam for right-hand drive 18 with an oblique upper cutoff formed by a complementary optical system 8, 12 and 14 corresponding to the lighting module of FIG. 1. The H axis corresponds to the horizontal at the level of the optical axis and the V axis corresponds to the vertical centered on l optical axis. It can be observed that the main light beam 16 is very wide and has a substantially flat upper horizontal cut-off, in particular at the center, essentially aligned with the H axis, while the complementary light beam for right-hand drive 18 has a substantially smaller width. . The upper cut-off comprises an oblique central part 18.1 connecting a left horizontal cut-off 18.2 essentially aligned with the upper horizontal cut-off of the main light beam 16 with a right horizontal cut-off 18.3 at a higher level compared to the upper horizontal cut-off of the main light beam 16.
La figure 3 illustre l’image lumineuse d’un faisceau lumineux à coupure supérieure avec une portion centrale oblique pour conduite à gauche. Il s’agit également d’une fonction d’éclairage dite feu de croisement ou « code ». Similairement au faisceau lumineux de la figure 2, le faisceau lumineux de la figure 3 est constitué d’un faisceau lumineux principal 16 formé par le système optique principal 6, 10 et 14 du module d’éclairage de la figure 1 , et d’un faisceau lumineux complémentaire s’agissant ici d’un faisceau lumineux complémentaire pour conduite à gauche 20 avec une coupure supérieure oblique formée par un système optique complémentaire 8, 12 et 14 correspondant du module d’éclairage de la figure 1. Le système optique complémentaire 8, 12 et 14 en question est distinct de celui formant le faisceau lumineux complémentaire pour conduite à droite 18 de la figure 2. Similairement à la figure 2, on peut observer que le faisceau lumineux principal 16 est très large et présente une coupure horizontale supérieure essentiellement plate, en particulier au centre, essentiellement alignée avec l’axe H alors que le faisceau lumineux complémentaire pour conduite à gauche 20 présente une largeur sensiblement plus faible et une coupure supérieure avec une partie centrale oblique 20.1 reliant une coupure horizontale droite 20.2 essentiellement alignée avec la coupure horizontale supérieure du faisceau lumineux principal 16, avec une coupure horizontale gauche 20.3 à un niveau supérieur par rapport à la coupure horizontale supérieure du faisceau lumineux principal 16. FIG. 3 illustrates the light image of a light beam with upper cut-off with an oblique central portion for left-hand drive. This is also a so-called low beam or "code" lighting function. Similar to the light beam of Figure 2, the light beam of Figure 3 consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of Figure 1, and a complementary light beam here being a complementary light beam for left-hand drive 20 with an oblique upper cut-off formed by a complementary optical system 8, 12 and 14 corresponding to the lighting module of FIG. 1. The complementary optical system 8 , 12 and 14 in question is distinct from that forming the complementary light beam for right-hand drive 18 of figure 2. Similar to figure 2, it can be observed that the main light beam 16 is very wide and has an upper horizontal cut-off which is essentially flat, in particular in the center, essentially aligned with the 'axis H whereas the complementary light beam for driving on the left 20 has a substantially smaller width and an upper cut-off with an oblique central part 20.1 connecting a right horizontal cut-off 20.2 essentially aligned with the upper horizontal cut-off of the main light beam 16, with a left horizontal cutoff 20.3 at a higher level than the upper horizontal cutoff of the main light beam 16.
La figure 4 illustre l’image lumineuse d’un faisceau lumineux à coupure supérieure plate. Il s’agit également d’une fonction d’éclairage dite feu de croisement ou « code ». Similairement aux faisceaux lumineux des figures 2 et 3, le faisceau lumineux de la figure 4 est constitué d’un faisceau lumineux principal 16 formé par le système optique principal 6, 10 et 14 du module d’éclairage de la figure 1, et d’un faisceau lumineux complémentaire s’agissant ici d’un faisceau lumineux complémentaire à coupure supérieure plate. On peut observer que le faisceau lumineux principal 16 est très large et présente une coupure supérieure essentiellement plate et horizontale, en particulier au centre, essentiellement alignée avec l’axe H, similairement aux figures 2 et 3, alors que le faisceau lumineux complémentaire 22 est sensiblement plus étroit et présente une coupure supérieure plate. Le faisceau lumineux complémentaire 22 permet de rajouter de la lumière au centre et à proximité de la coupure du faisceau lumineux, conformément aux exigences de la réglementation, notamment celle en vigueur aux Etats-Unis d’Amérique (norme FMVSS 108, acronyme de « Fédéral Motor Vehicle Safety Standard 108 »). Figure 4 illustrates the light image of a light beam with a flat top cutoff. This is also a so-called low beam or "code" lighting function. Similar to the light beams of Figures 2 and 3, the light beam of Figure 4 consists of a main light beam 16 formed by the main optical system 6, 10 and 14 of the lighting module of Figure 1, and a complementary light beam, in this case a complementary light beam with a flat top cutoff. It can be observed that the main light beam 16 is very wide and has an upper cut which is essentially flat and horizontal, in particular at the center, essentially aligned with the H axis, similarly to Figures 2 and 3, while the complementary light beam 22 is significantly narrower and has a flat top cutout. The additional light beam 22 makes it possible to add light at the center and near the cut-off of the light beam, in accordance with the requirements of the regulations, in particular that in force in the United States of America (standard FMVSS 108, acronym of "Federal Motor Vehicle Safety Standard 108 ”).
La figure 5 illustre plusieurs images lumineuses à coupure horizontale supérieure, similaires à celles des figures 2 à 4 où toutefois le faisceau lumineux complémentaire à coupure supérieure plate 22 est systématiquement superposé aux faisceaux lumineux complémentaires à coupure supérieure oblique conduite à droite et conduite à gauche, respectivement. Suivant cette alternative, le faisceau lumineux complémentaire à coupure supérieure plate 22 vient compléter le faisceau lumineux complémentaire à coupure supérieure oblique. Ce dernier peut alors présenter moins de lumière dans sa partie basse, par exemple présenter une coupure inférieure plus haute. FIG. 5 illustrates several light images with upper horizontal cut-off, similar to those of FIGS. 2 to 4 where, however, the complementary light beam with flat upper cut-off 22 is systematically superimposed on the complementary light beams with upper oblique cut-off driven on the right and driven on the left, respectively. According to this alternative, the complementary light beam with flat upper cut-off 22 completes the light beam complementary with oblique upper cut. The latter can then have less light in its lower part, for example have a higher lower cutoff.
La figure 6 est une représentation schématique du parcours des rayons lumineux du module d’éclairage de la figure 1. Le système optique principale 6, 10 et 14 et un des systèmes optiques complémentaires 8, 12, 14 sont représentés. Figure 6 is a schematic representation of the path of light rays from the lighting module of Figure 1. The main optical system 6, 10 and 14 and one of the complementary optical systems 8, 12, 14 are shown.
Pour le système optique principal, un seul composant semi-conducteur lumineux 6.1 et un seul collecteur 10.1, 10.2, 10.3, 10.4 du réflecteur 10 sont représentés, étant entendu que le même principe s’applique aux autres composants semi-conducteurs lumineux 6.1 et aux autres collecteurs associés. La lentille de projection 14 comprend une sous-lentille 14.1 associée aux collecteurs 10.1 , 10.2, 10.3 et 10.4, et aux composants semi-conducteurs lumineux 6.1. Cette sous-lentille 14.1 et le collecteur 10.1 , 10.2, 10.3 ou 10.4 illustré sont alignés suivant un axe optique 24.1 du système optique principal. La sous-lentille 14.1 est une lentille de projection avec un foyer 14.3 situé au niveau d’un bord arrière A de la surface réfléchissante du collecteur 10.1, 10.2, 10.3 ou 10.4. Elle image ainsi la surface réfléchissante éclairée par le composant semi-conducteur lumineux 6.1 associé, de manière plus ou moins nette. En l’occurrence, le bord arrière A de la surface réfléchissante est imagé avec netteté afin de former un bord de coupure supérieure net alors que le bord avant B est imagé avec moins de netteté et forme alors un bord de coupure inférieur plus flou. C’est donc à dessein que le foyer 14.3 de la sous-lentille de projection 14.1 est disposé davantage à proximité du bord arrière A que du bord avant B. La sous- lentille de projection 14.1 présente une certaine profondeur de champ. La profondeur de champ est suffisante pour imager de manière nette une portion de la surface réfléchissante, ladite portion correspondant préférentiellement à au moins 30%, et plus préférentiellement à la totalité, de l’étendue suivant l’axe optique de la surface réfléchissante. Le bord arrière A de la surface réfléchissante du collecteur 10.1 ,For the main optical system, a single light semiconductor component 6.1 and a single collector 10.1, 10.2, 10.3, 10.4 of the reflector 10 are shown, it being understood that the same principle applies to the other light semiconductor components 6.1 and to the other associated collectors. The projection lens 14 comprises a sub-lens 14.1 associated with the collectors 10.1, 10.2, 10.3 and 10.4, and with the light semiconductor components 6.1. This sub-lens 14.1 and the collector 10.1, 10.2, 10.3 or 10.4 illustrated are aligned along an optical axis 24.1 of the main optical system. The sub-lens 14.1 is a projection lens with a focus 14.3 located at a rear edge A of the reflective surface of the collector 10.1, 10.2, 10.3 or 10.4. It thus images the reflecting surface illuminated by the associated light semiconductor component 6.1, more or less clearly. In this case, the trailing edge A of the reflective surface is imaged sharply to form a sharp upper cut-off edge while the leading edge B is imaged less sharply and thus forms a more blurred lower cut-off edge. It is therefore purposely that the focus 14.3 of the projection sub-lens 14.1 is disposed more near the rear edge A than the front edge B. The projection sub-lens 14.1 has a certain depth of field. The depth of field is sufficient to clearly image a portion of the reflecting surface, said portion preferably corresponding to at least 30%, and more preferably to all, of the extent along the optical axis of the reflecting surface. The rear edge A of the reflective surface of the collector 10.1,
10.2, 10.3 ou 10.4 présente un profil courbe dans un plan horizontal, signifiant que le bord en question présente une distance à la sous-lentille de projection 14.1 qui est variable. La profondeur de champ de celle-ci permet d’assurer une netteté suffisante du bord de coupure supérieure. Il est à noter que dans la configuration de la figure 6 où le foyer 14.3 est sur le bord arrière A, à une position centrale dudit bord, c’est la partie centrale du bord de coupure supérieur du faisceau lumineux 16 qui sera la plus nette. Il est toutefois entendu que d’autres positions du foyer 14.3 sont envisageables, notamment plus en avant à distance du bord arrière A. 10.2, 10.3 or 10.4 has a curved profile in a horizontal plane, meaning that the edge in question has a distance to the projection sub-lens 14.1 which is variable. Its depth of field ensures sufficient sharpness of the upper cut-off edge. It should be noted that in the configuration of FIG. 6 where the focus 14.3 is on the rear edge A, at a central position of said edge, it is the central part of the upper cut-off edge of the light beam 16 which will be the sharpest. It is however understood that other positions of the hearth 14.3 are possible, in particular further forward at a distance from the rear edge A.
Toujours en relation avec le système optique principal 6, 10 et 14, la sous-lentilleStill in relation to the main optical system 6, 10 and 14, the sub-lens
14.1 associée audit système peut présenter un foyer non pas ponctuel mais sous forme de segment, avantageusement courbe. Les collecteurs 10.1, 10.2, 10.3 et 10.4 peuvent alors être disposés côte-à-côte suivant ce profil courbe. Alternativement, la sous-lentille 14.1 peut comprendre différentes portions avec des foyers respectifs associés aux collecteurs 10.1, 10.2, 10.3 et 10.4. 14.1 associated with said system may have a focus which is not a point but in the form of a segment, advantageously curved. The collectors 10.1, 10.2, 10.3 and 10.4 can then be placed side by side according to this curved profile. Alternatively, the sub-lens 14.1 can comprise different portions with respective focal points associated with the collectors 10.1, 10.2, 10.3 and 10.4.
Le système optique complémentaire 8, 12 et 14 comprend la sous-lentille 14.2 alignée avec l’axe optique 24.2 dudit système et présentant un foyer 14.4 situé en l’occurrence sur la surface réfléchissante du collecteur 12.1, 12.2 ou 12.3, à distance du bord arrière C et du bord avant D de ladite surface. La sous-lentille de projectionThe complementary optical system 8, 12 and 14 comprises the sub-lens 14.2 aligned with the optical axis 24.2 of said system and having a focus 14.4 located in this case on the reflecting surface of the collector 12.1, 12.2 or 12.3, at a distance from the edge rear C and the front edge D of said surface. The projection sub-lens
14.2 image ainsi la surface réfléchissante éclairée délimitée par les bords arrière C et avant D, le bord arrière C formant la coupure inférieure du faisceau lumineux complémentaire 18, 20 ou 22, et le bord avant D formant la coupure supérieure. En référence à la discussion ci-avant relative au système optique principal, le foyer 14.4 peut être positionné davantage vers l’avant ou vers l’arrière, en fonction de la profondeur de champ de la sous-lentille 14.2 et de la netteté désirée pour les coupures supérieure et inférieure. 14.2 thus image the illuminated reflecting surface delimited by the rear edges C and front D, the rear edge C forming the lower cut-off of the complementary light beam 18, 20 or 22, and the front edge D forming the upper cut-off. With reference to the above discussion of the primary optical system, the focus 14.4 can be positioned further forward or backward, depending on the depth of field of the sub-lens 14.2 and the sharpness desired for the lens. the upper and lower cuts.
Toujours en relation avec le système optique complémentaire, la sous-lentille de projection 14.2 peut comprendre plusieurs zones adjacentes, en l’occurrence trois zones, présentant chacune un foyer distinct associé à un des collecteurs 12.1 , 12.2 et 12.3. Still in relation to the complementary optical system, the projection sub-lens 14.2 can include several adjacent zones, in this case three zones, each having a distinct focus associated with one of the collectors 12.1, 12.2 and 12.3.
Les sous-lentilles 14.1 et 14.2 peuvent être assemblées l’une à l’autre et/ou au reste du module d’éclairage de manière à former une lentille de projection 14 à part entière, ou alternativement être venues de matière pour former une lentille de projection 14 d’un seul tenant. The sub-lenses 14.1 and 14.2 can be assembled to each other and / or to the rest of the lighting module so as to form a full-fledged projection lens 14, or alternatively they may be integral to form a lens projection 14 in one piece.
La figure 7 illustre de manière schématique les images des faisceaux lumineux des systèmes optiques de la figure 6, similairement aux figures 2 à 5. On peut observer les bords de coupure supérieur et inférieur notés A et B, respectivement, de l’image lumineuse du faisceau lumineux principal 16, formés par les bords arrière A et avant B, respectivement, des surfaces réfléchissantes des collecteurs 10.1, 10.2, 10.3 et 10.4 du réflecteur 10. On peut également observer les bords de coupure supérieur et inférieur notés D et C, respectivement, de l’un des faisceaux lumineux complémentaires 18, 20 et 22, formés par les bords avant D et arrière C de la surface réfléchissante du collecteur 12.1, 12.2 ou 12.3 correspondant. FIG. 7 schematically illustrates the images of the light beams of the optical systems of FIG. 6, similarly to FIGS. 2 to 5. The upper and lower cut-off edges denoted A and B, respectively, of the image can be observed. light of the main light beam 16, formed by the rear edges A and front B, respectively, of the reflecting surfaces of the collectors 10.1, 10.2, 10.3 and 10.4 of the reflector 10. It is also possible to observe the upper and lower cut-off edges denoted D and C , respectively, of one of the complementary light beams 18, 20 and 22, formed by the front D and rear C edges of the reflecting surface of the corresponding collector 12.1, 12.2 or 12.3.
La figure 8 illustre un collecteur du système optique principal, à gauche en perspective arrière et à droite projeté par la lentille de projection sur un écran. A la représentation de gauche, on peut observer les bords arrière A et avant B de la surface réfléchissante d’un des collecteurs 10.1, 10.2, 10.3 et 10.4. La représentation de droite est la surface réfléchissante éclairée vue depuis l’avant de la lentille de projection, c’est-à-dire au travers de ladite lentille. Le passage des rayons lumineux au travers de la lentille de projection provoque une inversion de l’image. C’est pour cette raison que l’image en question présente une coupure supérieure A plate correspondant au bord arrière A de la surface réfléchissante du collecteur, qui est dans un plan, en l’occurrence horizontal. Le bord inférieur B de l’image correspond au bord avant B de la surface réfléchissante du collecteur, ce bord présentant une courbure en forme de demi-cercle avec une ouverture dirigée vers le bas, cette image étant alors inversée dans l’image produite. A cet effet, il est à remarquer que la surface réfléchissante du collecteur n’est pas nécessairement une surface de révolution autour de l’axe optique 24.1 du système optique principal. Elle peut présenter des déviations par rapport à une telle définition, notamment en vue d’étaler la coupure inférieure de l’image du faisceau lumineux principal. Figure 8 illustrates a collector of the main optical system, left in rear perspective and right projected by the projection lens onto a screen. In the representation on the left, we can see the rear A and front B edges of the reflecting surface of one of the collectors 10.1, 10.2, 10.3 and 10.4. The representation on the right is the illuminated reflective surface seen from the front of the projection lens, i.e. through said lens. The passage of light rays through the projection lens causes the image to invert. It is for this reason that the image in question has a top cut A flat corresponding to the trailing edge A of the reflective surface of the collector, which is in a plane, in this case horizontal. The lower edge B of the image corresponds to the front edge B of the reflective surface of the collector, this edge having a curvature in the form of a semicircle with an opening directed downwards, this image then being inverted in the image produced. To this end, it should be noted that the reflecting surface of the collector is not necessarily a surface of revolution around the optical axis 24.1 of the main optical system. It may present deviations from such a definition, in particular with a view to spreading the lower cut-off of the image of the main light beam.
Ce qui vient d’être décrit en relation avec la figure 8 s’applique également aux collecteurs 12.1, 12.2 et 12.3 des systèmes optiques complémentaires, étant toutefois entendu que les représentations à la figure 8 sont à inverser autour de l’axe optique du système optique complémentaire. Dans les systèmes optiques complémentaires formant les faisceaux lumineux complémentaires à coupure supérieure oblique, le bord de la surface réfléchissante formant la coupure en question présente alors un ressaut apte à former la portion oblique dudit bord et le décalage en hauteur des portions gauche et droite dudit bord. Dans la configuration de la figure 6, il s’agit du bord avant D. En référence aux figures 1 et 6, les sources lumineuses 6 et 8 sont avantageusement opposées, c’est-à-dire configurées pour éclairer dans des directions principales opposées à 180°. Il est toutefois envisageable que ces sources lumineuses soient orientées pour éclairer dans la même direction ou dans des directions non opposées. Il est en effet envisageable que les sources lumineuses inférieures 8, ou au moins une d’elles, soient orientées de manière à éclairer dans la même direction que la source lumineuse supérieure 6. Cela revient, à la figure 6, à inverser le système optique complémentaire 8, 12, 14.2 de 180° par rapport à l’axe optique 24.2. Une adaptation ou optimisation de la position du foyer 14.4 peut être avantageuse, notamment afin de concentrer la netteté sur un autre bord de coupure.What has just been described in relation to FIG. 8 also applies to collectors 12.1, 12.2 and 12.3 of complementary optical systems, it being understood, however, that the representations in FIG. 8 are to be reversed around the optical axis of the system. complementary optics. In complementary optical systems forming complementary light beams with an oblique upper cutoff, the edge of the reflecting surface forming the cutoff in question then has a projection capable of forming the oblique portion of said edge and the offset in height of the left and right portions of said edge. . In the configuration of figure 6, this is the leading edge D. Referring to Figures 1 and 6, the light sources 6 and 8 are advantageously opposed, that is to say configured to illuminate in main directions opposite 180 °. However, it is conceivable that these light sources are oriented to illuminate in the same direction or in non-opposite directions. It is in fact conceivable that the lower light sources 8, or at least one of them, are oriented so as to illuminate in the same direction as the upper light source 6. This amounts, in FIG. 6, to inverting the optical system. complementary 8, 12, 14.2 by 180 ° with respect to the optical axis 24.2. An adaptation or optimization of the position of the focus 14.4 can be advantageous, in particular in order to concentrate the sharpness on another cut-off edge.
En référence à la figure 6, la lentille de projection 14 comprend des sous-lentilles 14.1 et 14.2 pour le système optique principal et les systèmes optiques complémentaires. La sous-lentille 14.2 comprend plusieurs zones adjacentes associées aux systèmes optiques complémentaires respectivement. L’agencement de la sous-lentille 14.1 et des zones de la sous-lentille 14.2 peut prendre différentes configurations, notamment une configuration où la sous-lentille 14.1 associée au système optique principale est située en haut de la lentille 14 et les zones adjacentes de la sous-lentille 14.2 associée aux systèmes optiques complémentaires s’étendent horizontalement en bas de la lentille 14, directement sous la sous-lentille 14.1. Une autre configuration possible est une configuration similaire à la précédente où toutefois la zone de la sous-lentille 14.2, associée au système optique complémentaire formant le faisceau lumineux complémentaire à coupure supérieure plate 22 est située horizontalement à côté de la sous-lentille 14.1 associée au système optique principal. With reference to FIG. 6, the projection lens 14 comprises sub-lenses 14.1 and 14.2 for the main optical system and the complementary optical systems. The sub-lens 14.2 comprises several adjacent zones associated with the complementary optical systems respectively. The arrangement of the sub-lens 14.1 and of the zones of the sub-lens 14.2 can take different configurations, in particular a configuration where the sub-lens 14.1 associated with the main optical system is located at the top of the lens 14 and the adjacent zones of the sub-lens 14.2 associated with the complementary optical systems extend horizontally at the bottom of the lens 14, directly under the sub-lens 14.1. Another possible configuration is a configuration similar to the previous one where, however, the zone of the sub-lens 14.2, associated with the complementary optical system forming the complementary light beam with a flat upper cut-off 22 is located horizontally next to the sub-lens 14.1 associated with the. main optical system.
D’une manière générale, comme dans cet exemple de réalisation, le réflecteur supérieur 10 peut être réalisé avec une nervure de rigidité 10.5 s’étendant au moins le long de l’arrière de la pièce formant le réflecteur supérieur 10. Cette nervure de rigidité 10.5 permet de donner de la rigidité à la pièce formant le réflecteur supérieur 10, en particulier une résistance à la flexion. Ceci est particulièrement avantageux dans le cas où, comme ici, le réflecteur supérieur 10 comprend plusieurs collecteurs 10.1, 10.2, 10.3, 10.4, et où la réalisation du faisceau lumineux est optimisée en maintenant le positionnement de ces collecteurs les uns par rapport aux autres. C’est d’autant plus avantageux dans le cas où, comme ici, la lentille de projection 14 image la surface réfléchissante de l’un ou de chaque collecteur 10.1, 10.2, 10.3,In general, as in this exemplary embodiment, the upper reflector 10 can be produced with a stiffness rib 10.5 extending at least along the rear of the part forming the upper reflector 10. This stiffness rib 10.5 makes it possible to give rigidity to the part forming the upper reflector 10, in particular resistance to bending. This is particularly advantageous in the case where, as here, the upper reflector 10 comprises several collectors 10.1, 10.2, 10.3, 10.4, and where the production of the light beam is optimized by maintaining the positioning of these collectors relative to each other. This is all the more advantageous in the case where, as here, the projection lens 14 images the reflecting surface of one or each collector 10.1, 10.2, 10.3,
10.4. 10.4.
La nervure de rigidité 10.5 peut, comme ici, se prolonger sur les bords latéraux du premier réflecteur 10 pour en renforcer la rigidité. The rigidity rib 10.5 can, as here, extend over the lateral edges of the first reflector 10 to reinforce its rigidity.
Cette nervure de rigidité 10.5 est donc ici derrière les surfaces réfléchissantes des collecteurs 10.1, 10.2, 10.3, 10. 4 et peut comme ici, présenter un renfoncement 10.6 vers ces surfaces réfléchissantes. This rigidity rib 10.5 is therefore here behind the reflecting surfaces of the collectors 10.1, 10.2, 10.3, 10. 4 and can, as here, have a recess 10.6 towards these reflecting surfaces.
Comme dans cet exemple de réalisation, le radiateur 4.2 peut comprendre une paroi avant supérieure 4.5 à l’arrière de la platine 4.1 et transversale à celle-ci, notamment perpendiculaire. Ici cette paroi avant supérieure 4.5 est verticale. As in this exemplary embodiment, the radiator 4.2 may include an upper front wall 4.5 at the rear of the plate 4.1 and transverse thereto, in particular perpendicular. Here this upper front wall 4.5 is vertical.
Les ailettes 4.3 du radiateur 4.2 s’étendent verticalement et vers l’arrière à partir de cette paroi avant supérieure 4.5. The fins 4.3 of the radiator 4.2 extend vertically and rearwardly from this upper front wall 4.5.
La paroi avant supérieure 4.5 est de forme complémentaire avec celle de la nervure de rigidité 10.5. En particulier, elle comprend un décrochement 4.4 de forme complémentaire et logé dans le renfoncement 10.6. Les ailettes 4.3 sont donc plus longues que les autres et s’étendent davantage vers les diodes à électroluminescence 6.2. Ainsi cet agencement permet d'augmenter la taille de certaines des ailettes et aussi de les disposer plus près des LED, ce qui améliore et accélère leur refroidissement. The upper front wall 4.5 is of complementary shape with that of the rigidity rib 10.5. In particular, it comprises a recess 4.4 of complementary shape and housed in the recess 10.6. The fins 4.3 are therefore longer than the others and extend more towards the light emitting diodes 6.2. Thus this arrangement makes it possible to increase the size of some of the fins and also to place them closer to the LEDs, which improves and accelerates their cooling.
La combinaison de cette nervure de rigidité 10.5, de son renfoncement 10.6, de la paroi avant supérieure 4.5, de son décrochement 4.4 et des ailettes 4.3 à l’arrière de cette paroi avant supérieure 4.5 a donc trois fonctions : rigidité de la pièce formant le réflecteur supérieur 10, augmentation de la surface d'échange thermique et rapprochement des ailettes 4.3 des diodes à électroluminescence 6.2. The combination of this stiffness rib 10.5, its recess 10.6, the upper front wall 4.5, its recess 4.4 and the fins 4.3 at the rear of this upper front wall 4.5 therefore has three functions: rigidity of the part forming the upper reflector 10, increase of the heat exchange surface and bringing together of the fins 4.3 of the light-emitting diodes 6.2.
Ce principe peut également s’appliquer aux systèmes optiques complémentaires, et en particulier au réflecteur inférieur 12, qui peut également comprendre à l’arrière une nervure de rigidité, avec un renfoncement dans lequel se loge le décrochement d’une paroi avant inférieure du radiateur 4.2, et les ailettes qui s’en projettent vers l’arrière. This principle can also be applied to complementary optical systems, and in particular to the lower reflector 12, which can also include at the rear a rigidity rib, with a recess in which the recess of a lower front wall of the radiator is housed. 4.2, and the fins which project backwards.

Claims

REVENDICATIONS
[Revendication 1.] Module d’éclairage (2), notamment pour véhicule automobile, comprenant : [Claim 1.] Lighting module (2), in particular for a motor vehicle, comprising:
- un système optique principal (6, 10, 14) apte à former un faisceau lumineux principal (16) suivant un axe optique (24) du module, avec une coupure horizontale supérieure ; - a main optical system (6, 10, 14) capable of forming a main light beam (16) along an optical axis (24) of the module, with an upper horizontal cutoff;
- un premier système optique (8, 12.1, 14) complémentaire apte à former un premier faisceau lumineux complémentaire (18) suivant l’axe optique (24) du module d’éclairage, plus étroit que le faisceau lumineux principal (16) et avec une coupure supérieure oblique (18.1) ; caractérisé en ce que le module d’éclairage (2) comprend, en outre : - a first complementary optical system (8, 12.1, 14) capable of forming a first complementary light beam (18) along the optical axis (24) of the lighting module, narrower than the main light beam (16) and with an oblique upper cut (18.1); characterized in that the lighting module (2) further comprises:
- un deuxième système optique complémentaire (8, 12.2, 14) apte à former un deuxième faisceau lumineux complémentaire (20) suivant l’axe optique (24) du module, plus étroit que le faisceau lumineux principal (16) et avec une coupure supérieure oblique (20.1) opposée à la coupure supérieure oblique (18.1) du premier faisceau lumineux complémentaire (18). - a second complementary optical system (8, 12.2, 14) capable of forming a second complementary light beam (20) along the optical axis (24) of the module, narrower than the main light beam (16) and with a higher cutoff oblique (20.1) opposite the upper oblique cut-off (18.1) of the first complementary light beam (18).
[Revendication 2.] Module d’éclairage (2) selon la revendication 1 , caractérisé en ce que les coupures supérieures des premier et deuxième faisceaux complémentaires (18, 20) comprennent, chacune, de part et d’autre de la coupure oblique (18.1, 20.1), une coupure horizontale gauche (18.2, 20.3) et une coupure horizontale droite (18.3, 20.2), lesdites coupures horizontales gauche et droite étant décalées verticalement par la coupure oblique (18.1 , 20.1) et ce de manière opposées entre les premier deuxième faisceaux complémentaires (18, 20). [Claim 2.] A lighting module (2) according to claim 1, characterized in that the upper cuts of the first and second complementary beams (18, 20) each comprise on either side of the oblique cut-off ( 18.1, 20.1), a left horizontal cut (18.2, 20.3) and a right horizontal cut (18.3, 20.2), said left and right horizontal cuts being offset vertically by the oblique cut (18.1, 20.1) and this in an opposite manner between the first second complementary beams (18, 20).
[Revendication 3.] Module d’éclairage (2) selon l’une des revendications 1 et 2, caractérisé en ce que le module d’éclairage comprend, en outre, un troisième système optique complémentaire (8, 12.3, 14) apte à former un troisième faisceau lumineux complémentaire (22) suivant l’axe optique (24) du module d’éclairage, plus étroit que le faisceau lumineux principal (16) et avec une coupure supérieure horizontale. [Claim 3.] Lighting module (2) according to one of claims 1 and 2, characterized in that the lighting module further comprises a third complementary optical system (8, 12.3, 14) capable of forming a third complementary light beam (22) along the optical axis (24) of the lighting module, narrower than the main light beam (16) and with a horizontal upper cutoff.
[Revendication 4.] Module d’éclairage (2) selon la revendication 3, caractérisé en ce que le module d’éclairage est configuré pour que le troisième système optique complémentaire (8, 12.3, 14) ne soit actif qu’en alternative à l’un des premier et deuxième systèmes optiques complémentaires (8, 12.1, 14 ; 8, 12.2, 14), ou en complément à l’un des premier et deuxième systèmes optiques complémentaires. [Claim 4.] A lighting module (2) according to claim 3, characterized in that the lighting module is configured so that the third complementary optical system (8, 12.3, 14) is only active as an alternative to one of the first and second complementary optical systems (8, 12.1, 14; 8, 12.2, 14), or in addition to one first and second complementary optical systems.
[Revendication 5.] Module d’éclairage (2) selon l’une des revendications 1 à[Claim 5.] Lighting module (2) according to one of claims 1 to
4, caractérisé en ce que le module d’éclairage est configuré pour que les premier et deuxième systèmes optiques complémentaires (8, 12.1, 14 ; 8,4, characterized in that the lighting module is configured so that the first and second complementary optical systems (8, 12.1, 14; 8,
12.2, 14) ne soient actifs que de manière alternative. 12.2, 14) are only active alternatively.
[Revendication 6.] Module d’éclairage (2) selon l’une des revendications 1 à[Claim 6.] Lighting module (2) according to one of claims 1 to
5, caractérisé en ce que chacun des premiers, deuxième et, le cas échéant troisième, faisceaux lumineux complémentaires (8, 12.1, 14 ; 8, 12.2, 14 ; 8,5, characterized in that each of the first, second and, where appropriate third, additional light beams (8, 12.1, 14; 8, 12.2, 14; 8,
12.3, 14) présente, en outre, une coupure horizontale inférieure. [Revendication 7.] Module d’éclairage (2) selon l’une des revendications 1 à12.3, 14) also has a lower horizontal cutoff. [Claim 7.] Lighting module (2) according to one of claims 1 to
6, caractérisé en ce qu’au moins un ou chacun des premier, deuxième et, le cas échéant troisième, systèmes optiques complémentaires (8, 12.1, 14 ; 8, 12.2, 14 ; 8, 12.3, 14) comprend une source lumineuse (8), un collecteur (12.1, 12.2, 12.3) avec surface réfléchissante associé à ladite source lumineuse pour former le faisceau lumineux complémentaire (18, 20, 22) correspondant. 6, characterized in that at least one or each of the first, second and, where appropriate third, complementary optical systems (8, 12.1, 14; 8, 12.2, 14; 8, 12.3, 14) comprises a light source ( 8), a collector (12.1, 12.2, 12.3) with a reflecting surface associated with said light source to form the corresponding complementary light beam (18, 20, 22).
[Revendication 8.] Module d’éclairage (2) selon la revendication 7, caractérisé en ce que le module d’éclairage comprend un dispositif de projection (14) des premier, deuxième et, le cas échéant troisième, faisceaux lumineux complémentaires (18, 20, 22), configuré pour former une image de la surface réfléchissante du ou de chacun des collecteurs (12.1, 12.2, 12.3). [Revendication 9.] Module d’éclairage selon l’une des revendications 7 et 8, caractérisé en ce que la ou chacune des sources lumineuses (8) est configurée pour émettre les rayons lumineux dans une direction principale formant un angle compris entre 65° et 115° par rapport à l’axe optique, de préférence perpendiculaire à l’axe optique (24). [Claim 8.] A lighting module (2) according to claim 7, characterized in that the lighting module comprises a projection device (14) of the first, second and, where appropriate third, additional light beams (18 , 20, 22), configured to form an image of the reflecting surface of the or each of the collectors (12.1, 12.2, 12.3). [Claim 9.] A lighting module according to one of claims 7 and 8, characterized in that the or each of the light sources (8) is configured to emit the light rays in a main direction forming an angle between 65 ° and 115 ° relative to the optical axis, preferably perpendicular to the optical axis (24).
[Revendication 10.] Module d’éclairage selon l’une des revendications 7 à 9, caractérisé en ce que la ou au moins une des sources lumineuses (8) est configurée pour émettre les rayons lumineux vers le bas et la surface réfléchissante du collecteur correspondant (12.1, 12.2, 12.3) forme une calotte dirigée vers le haut, lorsque le module est en position opérationnelle. [Claim 10.] A lighting module according to one of claims 7 to 9, characterized in that the or at least one of the light sources (8) is configured to emit the light rays downwards and to the surface. reflective of the corresponding collector (12.1, 12.2, 12.3) forms a cap directed upwards, when the module is in the operational position.
[Revendication 11.] Module d’éclairage (2) selon la revendication 10, caractérisé en ce que le dispositif de projection (14) présente un foyer (14.4) situé sur la surface réfléchissante du ou de chacun des collecteurs correspondants (12.1, 12.2, 12.3), à distance et à l’avant d’un bord arrière (C) de ladite surface réfléchissante. [Claim 11.] A lighting module (2) according to claim 10, characterized in that the projection device (14) has a focus (14.4) located on the reflecting surface of the or each of the corresponding collectors (12.1, 12.2 , 12.3), away from and in front of a rear edge (C) of said reflecting surface.
[Revendication 12.] Module d’éclairage (2) selon l’une des revendications 7 à 11 , caractérisé en ce que la ou au moins une des sources lumineuses (8) est configurée pour émettre les rayons lumineux vers le haut et la surface réfléchissante du collecteur correspondant (12.1, 12.2, 12.3) forme une calotte dirigée vers le bas, lorsque le module est en position opérationnelle. [Claim 12.] A lighting module (2) according to one of claims 7 to 11, characterized in that the or at least one of the light sources (8) is configured to emit the light rays upwards and to the surface. reflector of the corresponding collector (12.1, 12.2, 12.3) forms a cap directed downwards, when the module is in the operational position.
[Revendication 13.] Module d’éclairage selon la revendication 12, caractérisé en ce que le dispositif de projection (14) présente un foyer situé sur la surface réfléchissante du ou de chacun des collecteurs correspondants (12.1, 12.2, 12.3), à un bord arrière (C) de ladite surface réfléchissante. [Claim 13.] A lighting module according to claim 12, characterized in that the projection device (14) has a focus located on the reflecting surface of the or each of the corresponding collectors (12.1, 12.2, 12.3), at a rear edge (C) of said reflecting surface.
[Revendication 14.] Module d’éclairage (2) selon l’une des revendications 7 à[Claim 14.] Lighting module (2) according to one of claims 7 to
13, caractérisé en ce que qu’il comprend une pièce formant un réflecteur complémentaire (12) comprenant le ou les collecteurs (12.1, 12.2, 12.3) des premier, deuxième et, le cas échéant troisième, systèmes optiques complémentaires (8, 12.1, 14 ; 8, 12.2, 14 ; 8, 12.3, 14), ledit réflecteur complémentaire comprenant une nervure de rigidité s’étendant au moins le long de l’arrière dudit réflecteur complémentaire (12). 13, characterized in that it comprises a part forming a complementary reflector (12) comprising the collector (s) (12.1, 12.2, 12.3) of the first, second and, where appropriate third, complementary optical systems (8, 12.1, 14; 8, 12.2, 14; 8, 12.3, 14), said complementary reflector comprising a stiffness rib extending at least along the rear of said complementary reflector (12).
[Revendication 15.] Module d’éclairage (2) selon l’une des revendications 1 à[Claim 15.] Lighting module (2) according to one of claims 1 to
14, caractérisé en ce que le système optique principal (6, 10, 14) comprend une source lumineuse (6) configurée pour émettre les rayons lumineux vers le haut, au moins un collecteur (10.1, 10.2, 10.3, 10.4) avec une surface réfléchissante formant une calotte dirigée vers le bas, associée à ladite source lumineuse (6) pour former le faisceau lumineux principal (16), le module d’éclairage comprenant un dispositif de projection (14) configuré pour former une image de la surface réfléchissante de l’au moins un collecteur (10.1, 10.2, 10.3, 10.4). [Revendication 16.] Module d’éclairage selon la revendication 15, caractérisé en ce que la source lumineuse (6) du système optique principal (6, 10, 14) comprend plusieurs composants semi-conducteurs lumineux associés chacun à un des collecteurs (10.1, 10.2, 10.3, 10.4) dudit système optique principal (6, 10, 14). 14, characterized in that the main optical system (6, 10, 14) comprises a light source (6) configured to emit the light rays upwards, at least one collector (10.1, 10.2, 10.3, 10.4) with a surface reflective cap forming a downwardly directed cap, associated with said light source (6) to form the main light beam (16), the lighting module comprising a projection device (14) configured to form an image of the reflecting surface of at least one collector (10.1, 10.2, 10.3, 10.4). [Claim 16.] A lighting module according to claim 15, characterized in that the light source (6) of the main optical system (6, 10, 14) comprises several light semiconductor components each associated with one of the collectors (10.1 , 10.2, 10.3, 10.4) of said main optical system (6, 10, 14).
[Revendication 17.] Module d’éclairage (2) selon l’une des revendications 15 à 16, caractérisé en ce que qu’il comprend une pièce formant un réflecteur principal (10) comprenant le ou les collecteurs (10.1, 10.2, 10.3, 10.4) du système optique principal (6, 10, 14), ledit réflecteur principal comprenant une nervure de rigidité (10.5) s’étendant au moins le long de l’arrière dudit réflecteur principal (10). [Claim 17.] A lighting module (2) according to one of claims 15 to 16, characterized in that it comprises a part forming a main reflector (10) comprising the one or more collectors (10.1, 10.2, 10.3 , 10.4) of the main optical system (6, 10, 14), said main reflector comprising a stiffness rib (10.5) extending at least along the rear of said main reflector (10).
[Revendication 18.] Module d’éclairage selon la revendication 14 ou 17, caractérisé en ce que la ou les nervures de rigidité (10.5) présentent un renfoncement (10.6) vers le ou les collecteurs (10.1, 10.2, 10.3, 10.4) du réflecteur (10, 12) correspondant, et en ce que le module d’éclairage comprend un support de la source lumineuse (6) comprenant une platine (4.1) et un radiateur (4.2) une paroi avant supérieure (4.5) à l’arrière de la platine (4.1 ) et transversale à ladite platine, le radiateur présentant des ailettes (4.3) s’étendant vers l’arrière à partir de ladite paroi avant supérieure (4.5). [Claim 18.] A lighting module according to claim 14 or 17, characterized in that the stiffness rib (s) (10.5) have a recess (10.6) towards the manifold (s) (10.1, 10.2, 10.3, 10.4) of the reflector (10, 12) corresponding, and in that the lighting module comprises a support for the light source (6) comprising a plate (4.1) and a radiator (4.2) an upper front wall (4.5) at the rear of the plate (4.1) and transverse to said plate, the radiator having fins (4.3) extending rearwardly from said upper front wall (4.5).
[Revendication 19.] Module d’éclairage selon la revendication 18, caractérisé en ce que ladite paroi avant (4.5) est de forme complémentaire avec celle de la nervure de rigidité (10.5) et comprend un décrochement (4.4) de forme complémentaire et logé dans le renfoncement (10.6). [Claim 19.] A lighting module according to claim 18, characterized in that said front wall (4.5) is of complementary shape with that of the rigidity rib (10.5) and comprises a recess (4.4) of complementary shape and housed in the recess (10.6).
PCT/EP2020/082337 2019-11-19 2020-11-17 Vehicle lighting module the cutoff of which is modulatable between left-hand drive and right-hand drive WO2021099290A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1912898A FR3103252B1 (en) 2019-11-19 2019-11-19 LIGHTING MODULE FOR VEHICLE WITH MODULAR CUT-OFF BETWEEN LEFT-HAND DRIVE AND RIGHT-HAND DRIVE
FRFR1912898 2019-11-19

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WO2021099290A1 true WO2021099290A1 (en) 2021-05-27

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EP2762772A1 (en) * 2005-07-26 2014-08-06 Valeo Vision Lighting assembly for automotive vehicles
FR2903946A1 (en) * 2006-07-21 2008-01-25 Peugeot Citroen Automobiles Sa Lighting system for motor vehicle, has left and right optical modules with respective light sources, which are illuminated selectively according to which vehicle is used on right or left traffic lanes
FR2944578A1 (en) * 2009-04-21 2010-10-22 Valeo Vision Sas MODULE AND LIGHTING DEVICE FOR VEHICLE WITH ENHANCED ROAD FUNCTION
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EP3404314A1 (en) * 2017-05-18 2018-11-21 Automotive Lighting Reutlingen GmbH Light module of a motor vehicle headlight and headlight with such a light module

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