EP3276249A1 - Leuchtsystem für beleuchtungsvorrichtung und/oder signalvorrichtung für kraftfahrzeug - Google Patents

Leuchtsystem für beleuchtungsvorrichtung und/oder signalvorrichtung für kraftfahrzeug Download PDF

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Publication number
EP3276249A1
EP3276249A1 EP17181259.7A EP17181259A EP3276249A1 EP 3276249 A1 EP3276249 A1 EP 3276249A1 EP 17181259 A EP17181259 A EP 17181259A EP 3276249 A1 EP3276249 A1 EP 3276249A1
Authority
EP
European Patent Office
Prior art keywords
light
module
segments
light module
lighting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP17181259.7A
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English (en)
French (fr)
Inventor
Benoit Reiss
Damien Cabanne
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
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 SAS filed Critical Valeo Vision SAS
Publication of EP3276249A1 publication Critical patent/EP3276249A1/de
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • 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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • 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
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V23/00—Arrangement of electric circuit elements in or on lighting devices
    • F21V23/003—Arrangement of electric circuit elements in or on lighting devices the elements being electronics drivers or controllers for operating the light source, e.g. for a LED array
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light

Definitions

  • the invention relates to the field of lighting and / or signaling, especially for motor vehicles. More particularly, the invention relates to a lighting and / or signaling system for a motor vehicle.
  • a motor vehicle is generally equipped with illuminated projectors intended to illuminate the road in front of the vehicle, at night or when the luminosity is reduced.
  • These luminous projectors generally make it possible to carry out two different types of lighting: a first cross-type lighting and a second road-type lighting.
  • Cross-type lighting provides sufficient illumination of the road in front of the vehicle for safe driving without dazzling other users on the road.
  • Road-style lighting illuminates a large portion of the road far ahead of the vehicle.
  • These types of lighting are generally subject to a regulation defining for example geographical areas in which the light beam performing this type of lighting must respect minima and / or maxima of light intensities.
  • Light modules are known that make it possible to form both regulatory code-type lighting and road-type lighting consisting of several light segments. Each light segment of the street lighting may be selectively extinguished when it is likely to dazzle a road user whose presence is detected by a detection system. These light modules therefore make it possible to achieve a selective road lighting function, also called “Glare Free High Beam”, or in French “Route anti-glare", offering the driver a better visibility of the road, while not impeding the other users.
  • Light modules are also known which make it possible to form a segmented lighting which makes it possible, for example, to perform a dynamic lighting function of the turns, via the lighting and / or extinguishing of certain segments. depending on the curvature of the turn, and therefore give a better view of the road to the driver.
  • These selective road lighting and dynamic cornering lighting functions belong to a family of functions called adaptive lighting and / or signaling functions intended to provide road lighting or vehicle signaling services. adapt to traffic conditions, the vehicle environment and the behavior of road users.
  • An object of the invention is therefore to provide a lighting system for performing both a regulatory lighting and an adaptive function, and which is simple to perform, and inexpensive.
  • a lighting system for lighting and / or signaling of a motor vehicle comprising first and second light modules, each light module being arranged to form a first beam participating in the realization regulatory lighting of a predetermined type; characterized in that at least one of the light modules comprises light emitting means arranged to form at least two selectively activatable light segments; and in that at least the first light module is arranged so that the first beam formed by this first light module forms a portion only of the prescribed type of prescribed lighting, and in that the light modules are arranged so that the first beams, when activated together, form all of the predetermined type of prescribed lighting.
  • the luminous power that the light system must provide is shared between two light modules, which makes it possible to reduce the number of high-power light-emitting sources in each of the light modules, while allowing the system to achieve both a regulatory lighting and an adaptive function.
  • the light modules used are therefore simpler to design and less expensive.
  • each light segment has at least 3 edges, including a lower edge and two lateral edges extending on either side of the lower edge.
  • each light segment has a quadrilateral shape, in particular of rectangle or trapezium or rhombus.
  • each light segment has a triangular shape.
  • the edges may be sharp and the bottom edge may be blurred.
  • each light segment may have a light distribution such that the light intensity of the segment is maximum at the lower edge and decreases as one moves away from the lower edge.
  • each light segment may have three edges, including a straight lower edge, a straight lateral edge and a curved edge joining the lower and lateral edges.
  • each light module of the light system is arranged to form a first beam participating in the realization of a road-type regulatory lighting.
  • each light module is arranged to form a first beam, said lower beam, participating in the realization of cross-type lighting and a second beam, said upper beam, involved in the realization of a road-type lighting; the first and second beams formed by each light module being selectively activatable.
  • at least one of the light modules comprises light emitting means arranged to form at least two selectively activatable light segments in one of the first and second beams formed by this light module.
  • at least the first light module is arranged so that the second beam formed by the first light module forms a portion only of a prescribed road-type lighting, and the light modules are arranged so that the second beam, when activated together, form a regulatory road lighting.
  • each light module of the light system is arranged to form a first beam participating in the achievement of a cross-type regulatory lighting.
  • each light module is arranged to form a first beam, said lower beam, participating in the realization of cross-type lighting and a second beam, said upper beam, involved in the realization of a road-type lighting; the first and second beams formed by each light module being selectively activatable.
  • at least one of the light modules comprises light emitting means arranged to form at least two selectively activatable light segments in one of the first and second beams formed by this light module.
  • at least the first light module is arranged so that the first beam formed by the first light module forms a portion only of a regulatory crossing type of lighting, and the light modules are arranged so that the first beams, when activated together, form a regulation cross type lighting.
  • the first and / or second light module comprises light emission means arranged to form at least two selectively activatable light segments in the second beam formed by this light module.
  • the first and / or second light module comprises light emission means arranged to form at least two selectively activatable light segments in the first beam formed by this light module.
  • the first and / or second light module comprises light emission means arranged to form at least two selectively activatable light segments in the first beam formed by this light module and light emission means arranged to form at at least two light segments selectively activatable in the second beam formed by this light module.
  • the two light modules comprise light emission means arranged to form at least two light segments selectively activatable in one and / or the other of the first and second beams formed by these light modules.
  • each of the two light modules comprises light emission means arranged to form at least two selectively activatable light segments in each of the second beams formed by these light modules.
  • each of the two light modules comprises light emission means arranged to form at least two selectively activatable light segments in each of the first beams formed by these light modules.
  • At least one of the light modules comprises light emission means arranged to form at least two selectively activatable light segments in one of the first and second beams formed by this light module and at least one of the light beams.
  • other light modules features light emitting means arranged to form at least two light segments selectively activatable in the other of the first and second beams formed by the light modules.
  • each of the two light modules comprises light emission means arranged to form at least two light segments selectively activatable in the first beam and in the second beam formed by these light modules.
  • the light emitting means of each of the light modules are arranged so that the light segments formed by the emission means of the first light module are interlaced with the light segments formed by the emission means of the second light module when they are simultaneously activated.
  • Interleaved light segments are understood to mean segments arranged in such a way that at least one light segment formed by the emission means of the first light module, called the first light segment, is arranged between two light segments formed by the light-emitting means. emission of the second light module, said second segments.
  • each of the light modules are arranged so that the light segments formed by the emitting means of the first light module are juxtaposed and / or superimposed with the light segments formed by the light emitting means. emission of the second light module.
  • “Adjoining light segments” means adjacent light segments, such that, for two neighboring segments, only one edge of a light segment is in contact with one of the edges of the other light segment .
  • These two light segments can be formed by a single light module or, one of the segments is a first segment formed by the first light module and the other segment is a second segment formed by the second light module.
  • Superimposed light segments means light segments arranged so that, for two adjacent segments, part of a light segment is at least partially covered by a portion of the other light segment.
  • These two light segments can be formed by a single light module or, one of the segments is a first segment formed by the first light module and the other segment is a second segment formed by the second light module.
  • a fraction, especially half, of the surface of a first light segment may be covered by an identical fraction, in particular half the surface of a second light segment.
  • the light segments are interleaved in an alternation of at least a first segment formed by the first light module and at least a second segment formed by the second light module. It will thus be possible to provide an alternation between a segment originating from one of the light modules and a segment originating from the other light module, or alternating between two segments coming from one of the light modules and a segment coming from the light module. another light module, or an alternation between two segments from one of the light modules and two segments from the other light module.
  • the light emitting means of a light module are arranged such that at least two selectively consecutive activatable light segments are juxtaposed. In an exemplary embodiment, the light emitting means of said light module are arranged so that all the selectively consecutive activatable light segments are juxtaposed
  • the light emitting means of said light module are arranged so that said selectively activatable light segments are spaced from each other.
  • the light emitting means of a light module are arranged so that said selectively activatable light segments are located on a single line.
  • these light segments may be arranged so that the centers of these light segments are aligned on a straight line.
  • these light segments may be arranged such that at least one edge, in particular a lower edge, of each light segment is aligned with the edges, in particular the lower edges, of the other segments.
  • the light emitting means of a light module are arranged so that said selectively activatable light segments are located on several lines.
  • said light segments are located on several lines superimposed on each other.
  • the light module comprising said light emitting means is arranged such that the first and / or second beam is exclusively formed by said at least two selectively activatable light segments formed by these light emitting means.
  • the light module comprising said light emitting means is arranged so that its first and second beams are exclusively formed by said at least two selectively activatable light segments formed by these light emitting means.
  • the second light module is arranged so that the first beam formed by this second light module forms only a portion of a regulatory crossing-type lighting, and in that the light modules are arranged so that the first beams, when are activated together, form a regulatory crossing type lighting.
  • the second light module is arranged so that the first beam formed by the second light module alone forms a regulatory crossing type of lighting.
  • Each light module comprises a single projection means, forming said optical system, associated with the at least first and second light-emitting sources of this light module for projecting beams from these light-emitting sources outside the light module.
  • the projection means may comprise a focal zone, and in particular a focal plane.
  • the projection means may include in particular one or more lenses and / or one or more reflectors.
  • At least one, in particular each, of the first and second light-emitting sources of at least one, in particular each, of the light modules comprises a semiconductor light emitting source, in particular a light emitting chip. an electroluminescent diode.
  • the light module comprising said light emitting means arranged to form at least two selectively activatable light segments comprises at least two semiconductor light emitting sources, said emitting means comprising said at least two light emitting sources. semiconductor.
  • each of the at least two semiconductor light emitting sources forms one of the at least two selectively activatable light segments.
  • each light-emitting source is disposed at the focal zone of the projection means of the light module, the light emitting surface of this light-emitting source being intended to be projected by the projection means to form the light-emitting source. one of said light segments.
  • said light emitting means comprises at least one primary optical element associated with each semiconductor light emitting source of these light emitting means for forming one of the at least two selectively activatable light segments.
  • each primary optical element is arranged to cooperate with the light-emitting source associated therewith so as to form images of this light-emitting source at the focal zone of the projection means of the light module, this image being intended to be projected by the projection means to form one of said light segments.
  • the primary optical element may, for example, be a light guide, a collimator, a reflector or a lens.
  • the second light module comprises a cutoff member arranged to intercept a portion of the light rays emitted by the first light emitting source of the second light module to form a cut in the first beam formed by the second light module. If necessary, the second light module is arranged so that the second beam is juxtaposed or covers the cutoff of the first beam, when they are activated simultaneously.
  • the cut-off member may comprise a so-called folding reflective surface.
  • a portion of the light beam emitted by the first light emitting source encounters the reflecting surface and is reflected in accordance with its angle of incidence on the surface. Another part of the light beam goes beyond edge of the reflecting surface, said cutting edge and is not deflected by the reflective surface.
  • the cutoff edge thus defines a boundary between the portion of the reflected beam and thus deflected and the nonreflected portion.
  • the reflective surface with its cutting edge is called a folder because it deflects or "bends" part of the first beam to form a cut at the first beam emitted by the light module.
  • the cutoff member is arranged so that the cutout formed in the first beam formed by the second light module has at least a substantially flat portion.
  • the cutoff member of the second light module has a cutting edge comprising at least one flat portion.
  • the cut-off member is arranged so that the cut-out formed in the first beam formed by the second light module is substantially flat over the entire length of said first beam.
  • the cut-off member of the second light module is arranged so that the cut-out formed in the first beam formed by the second light module has a drop in line with the substantially flat portion.
  • the cutoff member of the second light module has a cutoff edge with a hook at the right of the substantially flat portion.
  • the cutoff member of the second light module is arranged so that the cutout formed in the first beam formed by the second light module has an oblique portion to the right of the substantially flat portion.
  • the cutoff member of the second light module has a cutting edge with an oblique portion to the right of the substantially flat portion.
  • the first light module comprises a cutoff member arranged to intercept a portion of the light rays emitted by the first light emitting source of this first light module to form a cut in the first beam formed by the first light module.
  • the second beam is juxtaposed with / covers the cutoff of the first beam, when they are simultaneously activated
  • the cutoff member of the first light module is arranged so that the cutout formed in the first beam formed by the first light module has at least a substantially flat portion.
  • the cutoff member of the first light module has a cutoff edge with at least a substantially flat portion.
  • the cut-off member is arranged so that the cut-out formed in the first beam formed by the first light module is substantially flat over its entire length.
  • the cut-off member of the first light module is arranged so that the cut-out formed in the first beam formed by the first light module has a drop off in line with the substantially flat portion.
  • the cutoff member of the first light module has a cutoff edge with a hook at the right of the substantially flat portion.
  • the cutoff member of the first light module is arranged so that the cutout formed in the first beam formed by the first light module has an oblique portion to the right of the substantially flat portion.
  • the cutoff member of the first light module has a cutting edge with an oblique portion to the right of the substantially flat portion.
  • the second light module comprises a cutoff member arranged to intercept a portion of the light rays emitted by the first light emitting source of this second light module to form a cut in the first beam formed by the second light module.
  • this light module comprises an optical element capable of concentrating rays emitted by the first light-emitting source of this light module at the focal zone of the projection means.
  • this optical element may comprise at least one concave reflector portion of generally ellipsoidal type having at least a first focus and a focus point, the first light emitting source of the light module being disposed at the first focus so as to a majority of light rays emitted by this first light emitting source is reflected by the reflector portion in the vicinity of the focusing point, the focusing point being located at the focal area of the projection means.
  • the first and second light modules are arranged so that the horizontal portions of the cuts of the first beams formed by these light modules are aligned.
  • the first light module comprises said transmitting means, said transmitting means comprising an array of light emitting sources for forming at least two selectively activatable light segments in each of the first and second beams formed by this first light module.
  • said array of light-emitting sources extends in at least two directions. In other words, this matrix of light-emitting sources comprises several columns and several lines of light-emitting sources.
  • the first light module includes a primary optical element associated with each semiconductor light emitting source of these light emitting means to form one of the at least two selectively activatable light segments.
  • each optical element primary is arranged to cooperate with the light-emitting source associated therewith so as to form images of this light-emitting source at the focal zone of the projection means of the first light module, this image being intended to be projected by the projection means for forming one of said light segments.
  • the primary optical element may, for example, be a light guide, a collimator, a reflector or a lens, or even a microlens.
  • the primary optical elements may together form a matrix of primary optical elements of the same dimensions as the matrix of light-emitting sources, and thus comprising as many primary optical elements as light-emitting sources.
  • the light system comprises a control unit arranged to selectively activate the light emitting means so as to be able to selectively activate said two selectively activatable light segments.
  • the control unit may be arranged to selectively activate the first and / or second light emitting source of the first and / or second light module.
  • the light system may comprise a detection unit arranged to detect a characteristic relating to the traffic conditions and / or the environment of the vehicle and / or to the behavior of the road users, in particular relating to the presence of a vehicle. crossed vehicle or tracked on the road and likely to be dazzled by one of the light beams emitted by the light system.
  • the control unit is arranged to selectively activate and / or deactivate one or more of the light emitting means and / or first and / or second light emitting sources of the first and / or second light emitting means. light module according to said detection by the detection unit.
  • the first and second light modules can be arranged in the same projector of the motor vehicle.
  • FIG. 1a the projection of a light beam from a first light module according to the invention on a screen placed in a plane HV, and in which the line H is a horizontal line and the line V a vertical line.
  • This light beam comprises a first beam 11, said lower beam, involved in producing a cross-type lighting and a second beam 12, said upper beam, involved in the realization of road-type lighting.
  • the first 11 and second 12 beams formed by the first light module are selectively activatable.
  • the second beam 12 has three selectively activatable light segments 13 located on a single line.
  • Each segment 13 has a rectangular shape delimited by lateral edges 13a, a lower edge 13b and an upper edge 13c.
  • the segments 13 all have the same width, measured between the lateral edges 13a of a segment 13.
  • the segments 13 are distant from each other.
  • the distance separating two consecutive light segments 13, measured between the adjacent lateral edges 13a of these segments, is equal to the width of a light segment 13.
  • the lateral edges 13a of the light segments are sharp while each lower edge 13b is blurred.
  • Each light segment has a light distribution such that the light intensity of the segment is maximum at the lower edge 13b and decreases as one moves away from the lower edge 13b to the upper edge 13c.
  • the first beam 11 forms a portion only of a regulatory crossing type lighting. In other words, the first beam 11 is not, on its own, regulatory.
  • the first beam 11 has an upper cut 14 substantially flat over the entire width of the first beam 11 and parallel to the line H.
  • the segments 13 of the second beam 12 are juxtaposed at the cutoff 14 of the first beam 11, that is to say that the lower edges 13b of these segments 13 are aligned with the cutoff 14 of the first beam 11.
  • a central light segment 13 is disposed of to be centered on the vertical line V and the other light segments 13 are distributed on either side of this central light segment 13.
  • FIG 1b the projection of a light beam from a second light module according to the invention on a screen placed in the plane HV, as in figure 1a .
  • This light beam comprises a first beam 21, said lower beam, involved in producing a cross-type lighting and a second beam 22, said upper beam, involved in the realization of road-type lighting.
  • the first 21 and second 22 beams formed by the second light module are selectively activatable.
  • the second beam comprises two selectively activatable light segments 23.
  • Each of the light segments 23 is substantially identical, in particular by its shape, its dimensions and its light distribution, to the light segments 13 represented in FIG. figure 1a .
  • each segment 23 has a rectangular shape delimited by lateral edges 23a, a lower edge 23b and an upper edge 23c and segments 23 all have the same width, measured between the lateral edges 23a of the same segment 13, identical to that of segments 13 of the figure 1a .
  • the distance separating two consecutive light segments 23, measured between the adjacent lateral edges 23a of these segments is equal to the width of a light segment 23 and therefore of a light segment 13 of the figure 1a .
  • the first beam 21 forms a portion only of a regulatory crossing type lighting.
  • the first beam 21 is not, on its own, regulatory.
  • the first beam 21 has an upper cut across the entire width of the beam with a substantially flat lower portion 24 parallel to the line H, a substantially flat upper portion 26 which is parallel to the lower portion 24 and an oblique portion 25 connecting the flat portions. 24 and 26.
  • the oblique portion 25 includes an angle of 45 ° with the lower portion 24, it being understood that the skilled person could consider other angles within the scope of the invention.
  • the segments 23 of the second beam 22 are juxtaposed at the cutoff of the first beam 21, that is to say that the lower edges 23b of these segments 23 are aligned with the cut of the first beam 21. It could be envisaged without departing from the scope of the invention that the segments 23 are partially superimposed with the first beam 21, so that the lower edges 23b are arranged below the 14. Finally, the light segments 23 are distributed on either side of the vertical line V.
  • the figure 1c schematically represents the projection of the light beam emitted by the first module, as shown in FIG. figure 1a , with the light beam emitted by the second module, as represented on the figure 1b , on the same screen placed in the HV plane of figures 1 a and 1 b.
  • the light segments 13 of the first beam are interlaced with the light segments 23 by being juxtaposed with these light segments 23, so that each of the light segments 23 is arranged between two consecutive light segments 13 and that only the lateral edges 23a of this light segment 23 are in contact with one of the lateral edges 13a of the consecutive segments 13. In other words, no overlap other than at the lateral edges between a segment 23 and a segment 13 is observed. consecutive.
  • the light segments 13, 23 are interleaved in an alternation of a first segment 13 formed by the first light module and a second segment 23 formed by the second light module.
  • the arrangement of the beams is such that the substantially flat upper cut-off 14 of the first beam 11 is aligned with the substantially flat lower portion 24 of the upper cut-off of the first beam 21.
  • all the light segments 13 and 23 of the second beams 12 and 22 thus form a selective road-type lighting of which each light segment can be selectively extinguished when it is likely to dazzle a user of the road, whose presence is detected by a detection system.
  • the figure 2 is a side view of a light module 42 according to the invention making it possible to produce the beam presented on the figure 1a .
  • the light module 42 comprises a first light-emitting source 30 and three second light-emitting sources 34 arranged on the same heat sink 43.
  • Each of the first 30 and second light-emitting sources of the light module comprises a chip of an inescative electrolum diode .
  • This light module 42 comprises a single projection means 36 associated with the first 30 and second light-emitting sources of this light module for projecting beams from these light-emitting sources 30, 34 outside the light module.
  • the projection means 36 comprises a lens 35 having a focal zone 37, and in particular a focal plane P, supporting the focal zone 37.
  • Each of the second semiconductor light emitting sources 34 is associated with primary optical means in the form of a light guide 32 to form one of three selectively activatable light segments 13 of the second beam 12.
  • Each light guide 32 has an input face 34a for receiving light emitted by the associated light emitting source 34, a light-emitting face 34c, of substantially rectangular shape, disposed at the focal zone 37 of the projection means 36, and a lower reflection face 34b, of substantially ellipsoidal profile, arranged to reflect by total internal reflection of the light entering the light guide 32 from the input face to the entire output face.
  • Each light guide 32 is arranged to cooperate with the light emitting source 34 associated therewith so as to form images of this light-emitting source on its exit face 34c at the focal zone 37 of the projection means 36. the light module, this image being intended to be projected by the projection means 36 to form one of said light segments 13.
  • Each association of a second light-emitting source 34 and a light guide 32 thus forms a means light emission in the sense of the invention.
  • the first light-emitting source 30 is associated with a concave reflector portion 31 of ellipsoidal type having a first focus f and a focus point F.
  • the first light-emitting source 30 of the light module is disposed at the first focus f of in such a way that a majority of the light rays emitted by this first light-emitting source 30 is reflected by the reflector portion 31 in the vicinity of the focusing point F, the focusing point being situated at the focal zone 37 of the means 36. These light rays are then projected by the projection means 36 to form the first beam 11 of the module.
  • the light module 42 also comprises a cut-off member 39, an edge 40 of which is disposed at the focal zone 37 of the projection means of this light module.
  • This cut-off member 39 is arranged so as to intercept a portion of the light rays emitted by the first light-emitting source 30 of this light module to form a cut-off 14 in the first beam 11 formed by this light module.
  • the cut-off member further comprises a so-called bending reflective surface 41 extending on an upper face of the cut-off member from the edge 40 to the reflector portion 31.
  • the portion of the light beam emitted by the first source light emitter 30 which is intercepted by the cut-off member 39 thus meets this reflecting surface 41 and is reflected in accordance with its angle of incidence on the surface towards the means of projection 36 to be projected below the cutoff line 14 of the first beam 11.
  • This cutting edge 40 has a substantially flat portion on a substantial portion of its width intended to intercept the light beam emitted by the source to form the upper cut 14 substantially flat over the entire length of the first beam 11.
  • the rectangular outlet faces 34c of the light guides 32 are juxtaposed with the cutting edge 40 of the cut-off member 39, so that an upper edge of each exit face 34c of the light guides 32 is joined with the cutting edge 40.
  • the image of the first 30 and second 34 light sources are juxtaposed at the focal zone 37, which allows the cut 14 of the first beam 11 to be juxtaposed with the lower edges 13b light segments 13 of the second beam 12, when they are activated simultaneously.
  • the light module 42 comprises a detection unit 44 arranged to detect a characteristic relating to the traffic conditions and / or the environment of the vehicle and / or the behavior of the road users, and in particular to detect the presence of a vehicle crossed or followed on the road and liable to be dazzled by one of the light beams emitted by the luminous system.
  • the light module 42 also comprises a control unit 45 arranged to activate and / or deactivate selectively one or more of the first 30 and second light-emitting sources 34, in particular according to said detection by the detection unit so as to it is possible to selectively activate the three selectively activatable light segments 13. It is thus understood that each light segment 13 can be selectively extinguished when it is likely to dazzle a user of the road, whose presence is detected by the detection unit. The light module is thus able to achieve part of a selective road lighting type.
  • this light module so that it forms the beams presented on the figure 1b for example by using only two second light-emitting sources 34 and two light guides 32 to form the two light-activatable segments 23 selectively and modifying the cut-off edge 40 of the cut-off member 39 so that this edge cutoff has a substantially flat lower portion and a substantially flat upper portion parallel to the substantially flat bottom cut, connected by an oblique portion.
  • the figure 3a illustrates the projection of a light beam from a first light module according to the invention on a screen placed in a plane HV, and in which the line H is a horizontal line and the line V is a vertical line.
  • This light beam comprises a first beam 50, said lower beam, involved in producing a cross-type lighting and a second beam 51, said upper beam, involved in the realization of road-type lighting.
  • the first 50 and second 51 beams formed by the first light module are selectively activatable.
  • the first beam 50 forms regulatory crossing type lighting alone and the second beam 51 forms a complementary road-type lighting alone.
  • the first beam 50 has an upper cut 52, 53, 54 over the entire width of the beam with a substantially flat lower portion 52 parallel to the line H, a substantially flat upper portion 54 which is parallel to the lower portion 52 and an oblique portion. 53 connecting the flat portions 52 and 54.
  • the oblique portion 53 is in particular an angle of 45 ° with the lower portion 52, it being understood that the skilled person could consider other angles within the scope of the invention.
  • the second beam 51 is juxtaposed at the cutoff of the first beam 50, that is to say that a lower edge 51a of the second beam 51 is aligned with the cutoff of the first beam 52, 53, 54. It could be envisaged, without leaving the frame of the invention that the second beam 51 is superimposed in part with the first beam 50 so that the lower edge 51 of the second beam 51 is disposed below the cut.
  • the figure 3b illustrates the projection of a light beam from a second light module according to the invention on a screen placed in the plane HV, as in figure 3a .
  • This light beam comprises a first beam 60, said lower beam and a second beam 61, said upper beam.
  • the first beam 60 is exclusively formed by eighteen selectively activatable light segments 62 and the second beam 61 is exclusively formed by eighteen selectively activatable light segments 63.
  • Each light segment 62 of the lower beam 60 has a substantially rectangular shape delimited by lateral edges 62a, a lower edge 62b and an upper edge 62c, it being understood that these segments could have other shapes, in particular trapezes, lozenges, etc. . without departing from the scope of the invention.
  • the segments all have the same width, measured between the lateral edges 62a of a segment 62.
  • the segments 62 are located on three lines parallel to the line H.
  • Each line comprises six selectively activatable light segments 62. These six selectively activatable light segments 62 are juxtaposed, i.e., the side edge 62a of a first light segment 62 is aligned with the side edge 62a of another light segment 62.
  • the lines are superimposed on each other, i.e. the upper edges 62c of the light segments 62 located on a line are aligned with the lower edges 62b of the light segments 62 located on a lower adjacent line.
  • the upper edges 62c of the light segments 62 located on the upper line of the first beam 60 form a substantially flat cutoff 64 over the entire width of the first beam 60.
  • the light segments 63 of the second beam 61 have a shape and an arrangement identical to the light segments 62 of the first beam 60.
  • the first 60 and second 61 beams are juxtaposed, that is to say that the cutoff 64 of the first beam is aligned with the lower edges 63b of the light segments 63 located on the lower line of the second beam 61. It is therefore clear that all the light segments 62 and 63 of the first and second light beams 60 and 61 form a matrix of segments, each segment is selectively activatable.
  • the figure 3c schematically represents the projection of the light beam emitted by the first module, as shown in FIG. figure 3a , with the light beam emitted by the second module, as represented on the figure 3b , on the same screen placed in the HV plane of Figure 3a and 3b .
  • the arrangement of the beams is such that the substantially flat lower portion 52 of the cut-off of the first beam 50 is aligned with the substantially flat upper cut-off 64 of the first beam 60. It could be envisaged, without departing from the scope of the invention, that the upper edge 65 of the second beam 61, formed by the upper edges 63c of the light segments 63 located on the upper line of the second beam 61, is aligned with the substantially flat upper portion 54 of the cut of the first beam 50. It is thus understood that the first beam 60 is associated with the first beam 50 so as to be able to achieve both regulatory crossing type lighting and a dynamic cornering lighting function, as will be seen later.
  • the figure 4 is a side view of a light module 77 according to the invention making it possible to produce the beam presented on the figure 3b .
  • This light module 77 comprises eighteen light-emitting sources 70 and eighteen second light-emitting sources 71 arranged in a matrix of light emitting sources of dimensions 6 ⁇ 6 arranged on the same support 78.
  • Each of the first 70 and second 71 Light emitting sources of the light module comprises a chip of a light emitting diode.
  • This light module 77 comprises a single projection means 73 associated with the first 70 and second light-emitting sources 71 of this light module for projecting the beams coming from these light-emitting sources to light. the outside of the light module.
  • the projection means 73 comprises a lens 75 with a focal zone 74, and in particular a focal plane P.
  • Each of the first 70 and second 71 light-emitting sources is associated with a primary optical element 76, in the form of a microlens 76.
  • Each microlens 76 is arranged to cooperate with the light-emitting source 70, 71 associated therewith. in order to form an image of this light-emitting source at the focal zone 74 of the projection means 73 of the light module 77, this image being intended to be projected by the projection means 73 to form one of said light segments 62 63.
  • the focal zone 74 of the projection means 73 is arranged behind the light-emitting sources 70 and 71, and each microlens 76 is arranged to form a virtual image of the associated light-emitting source. at this focal zone 74.
  • the microlenses are arranged in the form of a matrix of microlenses 72, of identical dimensions to those of the matrix of light-emitting sources.
  • This microlens array 72 has a light entry surface 72a, segmented into as many light entry facets as light emitting sources, and a substantially spherical shaped light exit surface 72b for correcting optical aberrations generated by the projection means 74.
  • the light module 77 comprises a detection unit 80 arranged to detect a characteristic relating to the traffic conditions and / or to the environment of the vehicle and / or to the behavior of the road users, in particular to detect the presence of a bend. upstream of the road taken by the vehicle.
  • the light module 77 also comprises a control unit 81 arranged to activate and / or deactivate selectively one or more of the first 70 and / or second 71 light-emitting sources according to said detection by the detection unit so as to selectively activate one or more of the thirty-six light segments 62, 63 selectively activatable, so as to gradually illuminate the turn taken by the vehicle.
  • the light module thus achieves a dynamic lighting function of the turns.
  • the skilled person can easily adapt the module presented on the figure 2 , for example using only a second light-emitting source, replacing the optical guides by a reflector portion substantially identical to the reflector portion associated with the first source and by arranging this reflector portion to reflect the light beam emitted by the second source at the cutoff edge of the cutoff member of the module, a part of this light beam being intercepted by the cutoff member and another part being reflected towards the projection means to be projected above the cutoff line formed by the cutoff edge of the cutoff member.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP17181259.7A 2016-07-25 2017-07-13 Leuchtsystem für beleuchtungsvorrichtung und/oder signalvorrichtung für kraftfahrzeug Pending EP3276249A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1657096A FR3054295B1 (fr) 2016-07-25 2016-07-25 Systeme lumineux pour dispositif d'eclairage et/ou de signalisation d'un vehicule automobile

Publications (1)

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EP3276249A1 true EP3276249A1 (de) 2018-01-31

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EP (1) EP3276249A1 (de)
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FR (1) FR3054295B1 (de)

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DE102008036193A1 (de) * 2008-08-02 2010-02-04 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug
EP2532950A1 (de) * 2011-06-10 2012-12-12 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfervorrichtung
WO2013075157A1 (de) * 2011-11-22 2013-05-30 Zizala Lichtsysteme Gmbh Led-projektionsmodul
JP2013242996A (ja) * 2012-05-18 2013-12-05 Koito Mfg Co Ltd 車両用前照灯
JP2015065008A (ja) * 2013-09-25 2015-04-09 スタンレー電気株式会社 車両用灯具
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JP5577138B2 (ja) * 2010-04-08 2014-08-20 スタンレー電気株式会社 車両用前照灯
FR2965326B1 (fr) * 2010-09-29 2015-09-25 Valeo Vision Dispositif d'emission de lumiere pour projecteur d'un vehicule automobile
JP5666882B2 (ja) * 2010-11-18 2015-02-12 株式会社小糸製作所 ハイビーム用灯具ユニット
DE102011013211B4 (de) * 2011-03-05 2012-12-06 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugscheinwerfer mit einem Mehrfunktions-Projektionsmodul
JP5823211B2 (ja) * 2011-09-01 2015-11-25 株式会社小糸製作所 車両用前照灯装置
JP5938204B2 (ja) * 2011-12-21 2016-06-22 株式会社小糸製作所 車両用前照灯装置
FR3006421B1 (fr) * 2013-05-30 2017-08-11 Valeo Vision Module d'eclairage pour projecteur de vehicule automobile, projecteur equipe de tels modules, et ensemble de projecteurs

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DE102005041234A1 (de) * 2005-08-31 2007-03-01 Hella Kgaa Hueck & Co. Scheinwerfer für Fahrzeuge
DE102007008994A1 (de) * 2006-02-24 2007-09-20 Koito Manufacturing Co., Ltd. Leuchteneinheit eines Fahrzeugscheinwerfers
DE102008036193A1 (de) * 2008-08-02 2010-02-04 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug
EP2532950A1 (de) * 2011-06-10 2012-12-12 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfervorrichtung
WO2013075157A1 (de) * 2011-11-22 2013-05-30 Zizala Lichtsysteme Gmbh Led-projektionsmodul
JP2013242996A (ja) * 2012-05-18 2013-12-05 Koito Mfg Co Ltd 車両用前照灯
JP2015065008A (ja) * 2013-09-25 2015-04-09 スタンレー電気株式会社 車両用灯具
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Publication number Publication date
CN107654955B (zh) 2024-04-23
FR3054295A1 (fr) 2018-01-26
FR3054295B1 (fr) 2022-08-26
CN107654955A (zh) 2018-02-02

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