EP4264125A1 - Dispositif d'éclairage de véhicule automobile - Google Patents
Dispositif d'éclairage de véhicule automobileInfo
- Publication number
- EP4264125A1 EP4264125A1 EP21839987.1A EP21839987A EP4264125A1 EP 4264125 A1 EP4264125 A1 EP 4264125A1 EP 21839987 A EP21839987 A EP 21839987A EP 4264125 A1 EP4264125 A1 EP 4264125A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- module
- light
- sub
- collector
- lighting device
- 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
Links
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
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/25—Projection lenses
- F21S41/265—Composite lenses; Lenses with a patch-like shape
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/151—Light emitting diodes [LED] arranged in one or more lines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—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
- F21S41/30—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
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
-
- 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
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/47—Attachment thereof
-
- 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
- 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]
Definitions
- the invention relates to the field of lighting and light signaling, more particularly in the automotive field.
- the invention relates to the technical field of lighting and light signaling.
- optical devices comprising a light source, a collector with a reflecting surface, a lens-type optical system and a cover arranged between the collector and the lens.
- the light rays reflected by the collector are partially intercepted by the mask before being projected by the lens, the edge of the mask thus forming a cut in the light beam which is projected.
- this type of device requires the use of a lens whose focal length is large and a collector having large dimensions. If one wishes to decrease the focal length while keeping the same optical power, it is necessary to increase the size of the lens. However, if one wishes to use a device comprising several light modules which one wishes to superimpose, for example for aesthetic reasons, the lighting device becomes bulky and cannot fit into the reduced space allocated to it on the vehicle. automobile.
- An object of the invention is to provide a light module making it possible to use a plurality of modules in the same box, the volume of which is compact in order to be positioned in a small space.
- the invention relates to a motor vehicle lighting device, the device comprising a housing in which are arranged at least a first light module arranged to emit a first light beam with a flat cutoff, a second light module arranged to emitting a second light beam extending at least partially above the first light beam, a third light module arranged to emit a segmented light beam, each segment of which is selectively controllable, the third light beam extending at least partially above of the second light beam, an optical projection system common to the first, second and third modules.
- the device is remarkable in that the second light module is arranged in the housing below the first light module, in that the third light module is arranged in the housing below the second light module and in that each of the first, second and third light modules comprise a plurality of light sources, a collector comprising a reflective surface arranged to collect and reflect the light rays emitted by the plurality of light sources into a beam light, a portion of the projection optical system arranged to project said light beam; said portion being arranged to form an image of the reflective surface of the collector.
- the first and the second light module correspond, for example, to the light beams usually used for regulatory lights of the crossing type.
- the third light module is in particular segmented in order to selectively control each segment of said module, making it possible to perform a glare-free road type lighting function.
- the first light module can be placed on the second light module itself placed on the third light module.
- the optical system can be a lens, arranged at the front of the device and common to the three light modules.
- the optical system can also be a reflector or a combination of one or more reflectors and one or more lenses. It is the projection system that allows the projection of the light beams emitted by the light sources on the road.
- Each light module comprises a plurality of light sources and a collector comprising a reflecting surface.
- the light collector is arranged in line with the light sources, so as to collect the light beam produced by the light sources and to send it to the optical system, itself adapted to project the light beam onto the road. Thanks to the invention, it is thus possible to perform light functions requiring a light beam having a higher cut-off, without using a mask. Therefore, it is possible to reduce the dimensions of the collector of each module and that of the projection optical system, and in particular their vertical dimensions, so as to be able to stack the light modules to respect, for example, an aesthetic constraint, while compacting the device.
- each of the first, second and third light modules comprises a plurality of sectors, each sector being arranged to collect and reflect the light rays emitted by at least one of the light sources of said module to which it is associated, said portion of the optical system of this module being arranged to form an image of each sector. It is thus understood that each sector defines, on its own, part of the light beam emitted by one of the modules.
- the plurality of sectors of each manifold are arranged transversely relative to each other.
- the sectors may have a truncated parabolic profile.
- a single light source is associated with each sector of each collector, that is to say that the light module comprises as many light sources as there are sectors in the collector.
- the light sources extend transversely with respect to an optical axis of the projection optical system.
- two adjacent sectors can have a common lateral edge.
- each sector of the collector of each of the first, second and third light modules has a rear edge and said portion of the optical system of this module has a line of focus located in the vicinity of the rear edges of said sectors of the collector of this module. so that the image of each sector formed by this portion has an upper cut formed by the rear edge of this sector.
- focus line located in the vicinity of the rear edges of the sectors means a focus line located at a distance from said rear edges which is less than 10 mm.
- Each sector of the collector of the first light module has a rear edge, a front edge and two side edges, and in which said first portion of the optical system has a line of focus located in the vicinity of the rear edges of said sectors so that the The image of each sector formed by this first portion has an upper cut formed by the rear edge of this sector and two side cuts each formed by at least a part of one of the side edges of this sector.
- the first light module comprises a first sub-module comprising the plurality of light sources, the collector and said portion, and two other sub-modules arranged on either side of the first sub-module of the first module, each of these sub-modules comprises a light source, a collector comprising a reflecting surface arranged to collect and reflect the light rays emitted by the light source into a light beam; a portion of the projection optical system arranged to project said light beam; said portion being arranged to form an image of the reflective surface of the collector and said portions of the projection optical system of these other sub-modules are arranged on either side of the portion of the projection optical system of the first sub-module of the first mod.
- the collector of the first sub-module comprises five sectors and the collectors of the other sub-modules arranged on either side of this first sub-module each comprise a single sector.
- the sub-modules of the first light module are arranged so as to each emit a light sub-beam having a substantially flat cutoff, these cutoffs being substantially aligned.
- the collectors of each sub-module of the first module form a single first part, forming a cover of the housing of the lighting device
- the device comprises a first heat sink separating the first and the second module, in which the light sources of each of the sub modules of the first light module are mounted on a first common support, said first support being a plate of the first heat sink.
- the first heat sink comprises heat dissipation fins, for example arranged at one end of the plate of the first heat sink, and the first single piece comprises a recess, said recess in which are arranged the fins of the first heat sink.
- the light sources produce heat conducted by the plate to the fins allowing the dissipation of the heat.
- the common support comprises a plurality of blocking members each arranged in line with one of the light sources of each of the sub-modules of the first module.
- the blocking members can for example be covers making it possible to prevent direct light from the light source from passing through the optical system and to avoid causing a spot of light.
- the blocking organs can take the form of a triangular prism.
- the second light module comprises a first diffusing screen interposed between said portion of the optical projection system of the second light module and the collector of the second light module.
- the first diffusing screen may have a front face, oriented towards the first portion of the projection optical system, and a rear face, oriented towards the collector of the second light module.
- the rear face is oriented towards the collector of the second light module, it is this face which receives the light beams returned by said collector of the second light module.
- the front face of the first screen is oriented on the side of said optical system, ie it is this face which projects the image of the collector onto the projection optical system.
- the front and rear faces of the first screen comprise a succession of concavities and convexities respectively. Each of the front and rear faces are provided with a plurality of cores.
- the first screen can make it possible to produce a light beam having an inverted "T" shape.
- the inverted "T" shape can be formed by the horizontal diffusion of the light beam by the diffusing screen.
- the first diffusing screen may extend between an upper part of said collector and said portion of the optical system which has a line of focus situated in the vicinity of the rear edges of said sectors of said collector. If necessary, the first diffusing screen can be arranged to intercept and deflect only light rays emitted by each first light source and reflected by an upper part of the sector of the collector of the second light module associated with this first light source.
- the first screen has an upper rim projecting from the rest of this screen towards the collector of the second light module, the first screen being arranged so that this upper rim adjoins an upper edge of the collector of the second light module.
- the rim may have a sinusoidal shape similar to the front and rear faces of the diffusing screen and may coincide with the upper front edge of the collector of the second light module.
- the device comprises a support plate on which are mounted the first screen and the collector of the second light module.
- the support plate has an orifice, said orifice cooperating with the pin of the screen.
- the second light module comprises a first sub-module comprising the plurality of light sources, the collector, the first screen and said portion of the projection optical system, and at least a second sub-module, this sub-module comprises a plurality of light sources, a collector comprising a reflective surface arranged to collect and reflect the light rays emitted by the light source into a light beam; a portion of the projection optical system arranged to project said light beam; said portion being arranged to form an image of the reflective surface of the collector and a second diffusing screen interposed between said portion of the projection optical system of this second sub-module and of the collector of this second sub-module and said portions of this second sub-module -module is arranged adjacent to the first sub-module portion of the second module.
- the collector of the first sub-module of the second module can comprise twelve sectors and the collector of the second sub-module of the second module can comprise twelve sectors
- the first screen and the second screen extend over the entire length of the collector of the first sub-module of the second module and of the collector of the second sub-module of the second module.
- the first screen and the second screen form a single piece called the screen of the second module.
- the two sub-modules are adjacent on the same horizontal line.
- the collector of the first sub-module of the second module and the collector of the second sub-module of the second module can in particular be arranged in continuity with one another.
- the front and rear faces of the screen of the second module may have a sinusoidal profile. Indeed, the front face has a concavity at the level of the collector of the first sub-module of the second module and of the collector of the second sub-module of the second module and has a convexity at the junction of the collector of the first sub-module of the second module and the collector of the second sub-module of the second module, that is to say at the level of the meeting of the first screen and the second screen.
- the second light module comprises a separating wall arranged between the two sub-modules, said separating wall extending under the plate of the first heat sink.
- the partition wall can be arranged parallel to the optical axis of the projection optical system.
- each sub-module of the second light module comprises a diaphragm arranged between the screen of the second module and the projection optical system.
- the diaphragm of the first sub-module of the second module and the diaphragm of the second sub-module of the second module form a single part called the diaphragm of the second module.
- Said second module diaphragm is arranged perpendicular to the optical axis of the projection optical system.
- the first heat sink comprises the separation wall and the diaphragm of the second module, forming a single piece.
- the partition wall and the diaphragm of the second module are located on the face of the first heat sink, opposite the face comprising the plurality of light sources.
- the first sub-module is arranged so that the images of the sectors of its collector, formed by the first portion of the projection optical system, are superimposed and/or interlaced with the images of the sectors of the second collector of the second sub-module formed by the second portion of the projection optical system.
- the device comprises a second heat sink separating the second and the third module, in which the light sources of the second light module are mounted on a second common support, said second support being a plate of the second heat sink.
- the second heat sink may include a plate on which are arranged the light sources of the second light module and includes fins in the continuity of the plate.
- the collectors of each sub-module of the second module form a single second part, in that the screens of each sub-module of the second module form a single part.
- the second single piece may comprise at least one lateral fixing wing arranged at one end of the collector of the second module, in particular of each collector of the light sub-modules of the second light module, and in which the first screen comprises at least one lateral fixing member which can cooperate with the lateral fixing wing of the collector of the second light module.
- the lateral fixing wing of the collector of the second module is, for example, a slot.
- the lateral fixing member of the first screen is, for example, a pin or a lug. The pin or the lug of the screen is inserted into the slot of the collector in order to maintain the first screen in position in front of the collector of the light module.
- the first screen and the second screen are arranged between the second single part comprising the collector of the first sub-module of the second module and the collector of the second sub-module of the second module and the projection optical system.
- one of the faces of said screen of the second module can receive the light beam reflected by the collector and the other of the faces of said screen of the second module can project this said light beam onto the optical projection system
- the third light module comprises a first sub-module comprising the plurality of light sources, the collector and said portion, and at least another sub-module, characterized in that this sub-module comprises a plurality of light sources, a collector comprising a reflective surface arranged to collect and reflect the light rays emitted by the light source into a light beam; a portion of the projection optical system arranged to project said light beam; said portion being arranged to form an image of the reflective surface of the collector and in that said portions of these other sub-modules are arranged adjacent to the portion of the first sub-module of the third module.
- the third light module may comprise a first, a second and a third sub-module, and the collector of the first sub-module of the third module comprising six sectors, the collector of the second sub-module of the third module comprising six sectors and the collector of the third sub-module of the third module comprising eight sectors
- the third light module comprises a plurality of dividing walls, each arranged between two adjacent sub-modules of the third module, said dividing walls extending under the second heat sink plate.
- the partition walls can be arranged parallel to the optical axis of the projection optical system.
- the second heat sink includes the plurality of partition walls.
- the light sources of the second light module are mounted on a first face of the second common support and in that the light sources of the third light module are mounted on a second face, opposite the first face, of the second common support.
- the plurality of partition walls of the third module are located on the face of the second heat sink, comprising the plurality of light sources of the third module and on the face opposite the face comprising the plurality of light sources of the second module.
- the collectors of each sub-module of the third module form a single third part, forming a frame of the housing of the lighting device.
- This single piece is called the third module manifold.
- the second heat sink has heat dissipation fins and in the second single piece has an opening opening onto said fins of the second heat sink and fixing members arranged in line with this opening and intended to cooperate with a fan.
- the second single piece has a sloping opening leading to the fins of the second heat sink.
- the sloping opening directs the airflow towards the fins and thus improves heat dissipation.
- the fins recover the heat diffused by the plate from the light sources, so as to dissipate said heat.
- the cavity or cavities of the collector of the first module and the cavity or cavities of the collector of the third module are oriented in opposite directions and the cavity or cavities of the collector of the first module and the cavity or cavities of the second of the third module are oriented in identical directions.
- the device comprises first fasteners arranged to hold together the second single part and the third single part and second fasteners arranged to hold together the third single part and the first single part.
- the second single part fixing member is a cap and the third single part fixing member is a pin. Said pin and said cap cooperate together to hold together the second single part and the third single part.
- the device comprises third fasteners arranged on the first and third single parts which cooperate with complementary fasteners of the optical projection system.
- the third fasteners are a slot and a notch cooperating to hold the projection optical system on the housing of the device.
- each of the light sources of the second light module and/or each of the light sources of the third light module can be activated selectively
- the device comprises a control unit arranged to selectively control each of these light sources that can be selectively activated.
- each light source is composed of a plurality of light-emitting diodes, each light source can be activated selectively.
- the control unit selects the light source to be activated, for example, according to the instructions received from a computer included in the motor vehicle in which the light module is installed.
- FIG. 1 represents, schematically and partially, a front perspective view of a lighting device according to one embodiment of the invention
- FIG. 2 represents, schematically and partially, another front perspective view of the lighting device of [Fig. 1], in which the projection optical system has been removed;
- FIG. 3 represents, schematically and partially, a top perspective view of a first luminous module of the lighting device of [Fig. 1];
- FIG. 4 represents, schematically and partially, a top perspective view of a second light module of the lighting device of [Fig. 1];
- FIG. 5 represents, schematically and partially, a top perspective view of a third light module of the lighting device of [Fig. 1];
- FIG. 6 represents, schematically and partially, a sectional view of the lighting device of [Fig. 1];
- FIG. 7 represents, schematically and partially, a rear perspective view of the second light module of the lighting device of [Fig. 1];
- FIG. 8 represents, in projection on a vertical screen, an example of a light beam emitted by the first light module of the lighting device of [Fig. 1],
- FIG. 9 represents, in projection on a vertical screen, an example of a light beam emitted by the second light module of the lighting device of [Fig. 1];
- FIG. 10 represents, in projection on a vertical screen, an example of a light beam emitted by the third light module of the lighting device of [Fig. 1],
- FIG. 1 a lighting device 30 of a motor vehicle according to one embodiment of the invention.
- This lighting device 30 will be described in conjunction with [Fig. 2], [Fig. 3], [Fig. 4], [Fig. 5], [Fig. 6] and [Fig. 7] which each represent a view of a part of this lighting device 30, and in connection with [Fig. 8], [Fig. 9] and [Fig. 10] which each represent an example of a light beam capable of being emitted by this lighting device 30.
- the lighting device 30 comprises three light modules 31, 32, 33 and has on its front face an optical projection lens 34.
- the lens 34 is formed from a single piece common to the plurality of light modules 31, 32, 33 making it possible to project the light beams emitted by the plurality of light sources onto the road.
- the first light module 31 is positioned above the second light module 32, itself being positioned above the third light module 33.
- the first light module 31 comprises a first sub-module 31.1, called sub-module central, and a second and a third sub-modules 31.2 and 31.3, called lateral sub-modules, aligned horizontally, so as to be adjacent to each other.
- the second light module 32 comprises a first sub-module 32.1 and a second sub-module 32.2 aligned horizontally, so as to be adjacent to each other.
- the third light module 33 comprises a first sub-module 33.1 called central sub-module, a second sub-module 33.2 and a third sub-module 33.3, called side sub-modules aligned horizontally, so as to be adjacent to each other.
- a first sub-module 33.1 called central sub-module
- a second sub-module 33.2 and a third sub-module 33.3, called side sub-modules aligned horizontally, so as to be adjacent to each other.
- two adjacent sub-modules have a common side edge.
- Each of the light sub-modules 31.1, 31.2 and 31.3 comprises at least one light source (not shown in the figures), a collector respectively 31.11, 31.21 and 31.31, comprising a reflecting surface arranged to collect and reflect the light rays emitted by said at least one light source into a light beam.
- the collector 31.11 is divided into five sectors, and the submodule luminous 31.1 comprises five light sources, each associated with one of these sectors.
- the manifold 31.11 two adjacent sectors have a common side edge.
- the plurality of sectors of the collector 31.11 are arranged transversely with respect to each other.
- the sectors have a truncated parabolic profile each defining a cavity in which the light source is arranged.
- the collectors 31.21 and 31.31 each comprise a single sector, and the sub-modules 31.2 and 31.3 each comprise a single light source (not shown) associated with the collector respectively 31.21 and 31.31.
- Each sector of the collectors 31.11, 31.21 and 31.31 is arranged so that it collects the light beam emitted by the light source and to reflect it towards the optical system 34. More precisely, each collector 31.11, 31.21 and 31.31 of a light sub-module 31.1, 31.2 and 31.3 reflects this light beam towards a portion of the optical system 34, respectively 31.12, 31.22 and 31.32, considered to be part of said light sub-module 31.1, 31.2 and 31.3.
- This lens portion 31.12, 31.22 and 31.32 has a line of focus, respectively fil, fl2 and 13, passing through the rear edge of the collector 31.11, 31.21 and 31.31, so that this lens portion projects the image of this collector.
- the first central sub-module 31.1 is thus arranged to form a light beam having a substantially flat upper cutoff, shown in [Fig. 8], each of the second and third lateral sub-modules 31.2 and 31.3 is arranged to form a light beam also having a substantially flat upper cut-off and having a horizontal extent and a maximum light intensity lower than those of the beam capable of being emitted by the first central sub-module 31.1.
- These two beams are for example intended to supplement the beam capable of being emitted by the first central sub-module 31.1 for the performance of functions of the motorway lighting or wide-range lighting type.
- the collector 31.11 is arranged between the collectors 31.21 and 31.31.
- the collectors 31.11, 31.21 and 31.31 are formed by the same first part 311, forming a cover of the lighting device 30, as shown in [Fig. 1],
- the first light module 31 comprises a first heat sink 312.
- the first heat sink 312 comprises a plate 312.1 serving as a common support for the plurality of light sources of the first light module 31 and comprises a plurality of fins 312.2 of heat dissipation.
- the first heat sink 312 comprises on its upper face pins 312.3 intended to come into abutment in recesses 311.1 of the cover 311 and allowing the indexing of the collectors 31.11, 31.21 and 31.31 vis-à-vis the light sources.
- the plate 312.1 comprises a plurality of blocking members 312.4, each has the shape of a triangular prism arranged in line with each of the light sources of the first module 31.
- the blocking members 312.4 are preferably caches making it possible to prevent direct, so-called parasitic, light from the light sources from passing through the optical system 34.
- the rear part of the cover 311, opposite to the zone for fixing the optical system 34, has a recess, shown in [Fig. 3], in which the fins 312.2 of the first heat sink 312 are arranged.
- Each of the light sub-modules 32.1 and 32.2 comprises at least one light source (not shown in the figures), a collector respectively 32.11 and 32.21, comprising a reflecting surface arranged to collect and reflect the light rays emitted by said at least a light source in a light beam and a first and a second diffusing screen 321.1, 321.2 interposed between said collector 32.11 and 32.21 and the projection optical system 34.
- the collectors 32.11 and 32.21 are divided into twelve sectors.
- the light sub-modules 32.1, 32.2 include twelve light sources (not shown), each associated with one of these sectors.
- two adjacent sectors have a common side edge.
- the plurality of sectors of the collectors 32.11 and 32.21 are arranged transversely with respect to each other.
- the sectors have a truncated parabolic profile each defining a cavity in which the light source is arranged.
- Each sector of the collectors 32.11 and 32.21 is arranged so as to collect the light beam emitted by the plurality of light sources and to reflect said beam towards the optical system 34.
- each collector 32.11 and 32.21 of the light sub-modules 32.1 and 32.2 reflects this light beam towards a portion of the optical system 34, respectively 32.12 and 32.22, considered to be part of said light sub-module 32.1 and 32.2.
- This lens portion 32.12 and 32.22 has a line of focus, respectively f21 and f22, passing through the rear edge of the collectors 32.11 and 32.21, so that this lens portion projects the image of these collectors onto the road.
- the collectors 32.11 and 32.21 are continuous with one another and form a second single part 323, as shown in [Fig. 4],
- the first diffusing screen 321.1 and the second diffusing screen 321.2 are arranged respectively in line with the collectors 32.11 and 32.21.
- the first and the second screen 321.1 and 321.2 form the same part called screen 321.
- the first and the second screen 321.1 and 321.2 have a front face 321.3, oriented on the side of the first and the second portion of the optical projection system 34, and a rear face 321.4, oriented towards the collectors 32.11 and 32.21.
- the rear face 321.4 of the screen 321 being oriented towards the collectors 32.11 and 32.21, it is this face 321.4 which receives the light beams returned by said collectors 32.11 and 32.21.
- the front face 321.3 of the screen 321 is oriented on the side of said optical system 34, that is to say that it is this face 321.3 which projects the image of the collectors 32.11 and 32.21 onto the projection optical system 34.
- front 321.3 and rear 321.4 faces respectively comprise a succession of concavities and convexities.
- Each of the front 321.3 and rear 321.4 faces are provided with a plurality of cores.
- the screen 321 has an upper rim 321.5, projecting from the remainder of said screen 321 towards the collectors 32.11 and 32.21, the screen 321 being arranged so that the said rim 321.5 adjoins the upper edge of the collectors 32.11 and 32.21.
- the flange 321.5 has a sinusoidal shape similar to the front 321.3 and rear 321.4 faces and coincides with the upper front edge of each manifold 32.11 and 32.21.
- the second single piece 323 comprises at least one lateral fixing wing 323.1 arranged at one end of its reflecting surface
- the screen 321 comprises at least one lateral fixing member 321.6 arranged to cooperate with said lateral fixing wing 323.1 of the second single piece 323.
- the lateral fixing wing 323.1 is a slot.
- the lateral fixing member 321.6 is a pin or a lug. The pin or lug 321.6 is inserted into the slot 323.1 in order to hold the screen 321 in position in front of the collector 32.11 and 32.21.
- the first and second sub-modules 32.1 and 32.2 are thus arranged to form a plurality of light segments each having a shape substantially in the shape of an inverted “T” having a horizontal extent.
- the screen 321 allows the horizontal diffusion of each light segment formed from the image of each sector, at the level of its lower part, so as to obtain light segments having this so-called particular inverted “T” shape.
- the lower diffused portions of these light segments formed by this sub-module overlap to form a segmented light beam, as shown in [Fig . 9],
- the first sub-module 32.1 is arranged so that the images of the sectors of the first collector 32.11 formed by a first portion of the projection optical system 32.12 are superimposed with the images of the sectors of the second collector 32.21 of the second sub-module 32.2 formed by a second portion 32.22 of the projection optical system 34.
- each image formed by the second sub-module 32.2 is superimposed with at least one of the images formed by the first sub-module 32.1, the set of images thus forming together a homogeneous light beam.
- the second light module 32 comprises a second heat sink 322.
- Said second heat sink 322 comprises a plate 322.1 serving as a common support for the plurality of light sources of the second light module 32 and comprises a plurality of fins 322.2 of heat dissipation.
- the second heat sink 322 comprises on its upper face pins 322.4 intended to come into abutment in recesses 323.2 of the second single piece 323 and allowing the indexing of the collectors 32.11 and 32.21 vis-à-vis the light sources.
- the lower face of the second heat sink 322, opposite the face comprising the plurality of light sources, comprises a plurality of partition walls 322.3 forming a side edge common to two adjacent sub-modules of the third module. bright 33.
- the second single piece 323 comprises a sloping opening 323.3 opening onto the fins 322.2 of the second heatsink 322, as shown in [Fig. 4],
- the second single piece 323 comprises fastening members 323.5 arranged in line with said opening 323.3, intended to cooperate with a fan (not shown).
- the sloping opening directs the airflow towards the fan and thus improves heat dissipation.
- the opening 323.3 allows the dissipation of the heat produced by the light sources of the second module 32.
- the lower face of the first heat sink 312, opposite the face comprising the plurality of light sources of the first module 31, comprises a diaphragm 312.5 arranged perpendicularly with respect to the optical axis of the optical projection system 34 and comprises a dividing wall 312.6 of the first and second sub-modules of the second light module 32, as shown in [Fig. 1] and in [Fig. 3],
- the first heat sink 312, the partition wall 322.3 and the diaphragm 3125 form a single piece.
- Each of the light sub-modules 33.1, 33.2 and 33.3 of the third module 33 comprises at least one light source (not shown in the figures), a collector respectively 33.11, 33.21 and 33.31, comprising a reflective surface arranged to collect and reflect the light rays emitted by said at least one light source into a light beam.
- the central collector 33.11 is divided into six sectors, and the light sub-module 33.1 comprises six light sources, each associated with one of these sectors.
- the plurality of sectors of the collector 33.11 are arranged transversely relative to each other.
- the sectors have a truncated parabolic profile each defining a cavity in which the light source is arranged.
- the collectors 33.21 and 33.31 respectively comprise six and eight sectors, and the sub-modules 33.2 and 33.3 respectively comprise six and eight light sources (not shown) associated with the collector respectively 33.21 and 33.31.
- Each sector of the collectors 33.11, 33.21 and 33.31 is arranged so that it collects the light beam emitted by the light source and to reflect it towards the optical system 34. More precisely, each collector 33.11, 33.21 and 33.31 of a light sub-module 33.1, 33.2 and 33.3 reflects this light beam towards a portion of the optical system 34, respectively 33.12, 33.22 and 33.32, considered to be part of said light sub-module 33.1, 33.2 and 33.3.
- This lens portion 33.12, 33.22 and 33.32 has a line of focus, respectively f31, f32 and 33, passing through the rear edge of the collector 33.11, 33.21 and 33.31, so that this lens portion projects the image of this collector.
- each of the first, second and third sub-modules 33.1, 33.2 and 33.3 is thus arranged to form a segmented light beam, each segment of which is selectively controllable, shown in [Fig. 10],
- the collector 33.11 is arranged between the collectors 33.21 and 33.31.
- the collectors 33.11, 33.21 and 33.31 are formed by the same third part 330, forming a frame of the lighting device 30, as shown in [Fig. 1] and in [Fig. 5],
- the third module 33 two adjacent sub-modules have a common side edge 322.3, said side edge 322.3 forming a single piece with the second heat sink 323 as shown in [fig. 5],
- the collector cavity or cavities 31.11, 31.21 and 31.31 and the collector cavities 33.11, 33.21 and 33.31 are oriented in opposite directions and the collector cavity or cavities 31.11, 31.21 and 31.31 and the collector cavities 32.11 and 32.21 are oriented in the same direction.
- the light sources of the second light module 32 are mounted on a first face of the second common support 322.1 and in that the light sources of the third light module 33 are mounted on a second face, opposite the first face, of the second support common 322.1.
- the second unique piece 323 comprises two recesses 323.2 in which a pin 330.1 of the frame 330 is housed to hold together said second unique piece 323 and said frame 330.
- the cover 311 and the frame 330 each comprise second fixing members 311.2, 330.1, respectively caps 311.2 and pins 330.1, shown in [Fig. 2], said caps 311.2 and said pins 330.1 cooperate together to hold said cover 311 and said frame 330 together.
- 330.1, shown in [Fig. 2], said caps 323.4 and said pins 330.1 cooperate together to hold together said second single piece 323 and said frame 330.
- the front part of the cover 311 includes a slot 3111 for fixing the optical system 34.
- the frame 330 includes a slot 330.2 capable of cooperating with the notch 340 of the optical system 34.
- the lens includes at least one notch 340 cooperating with at least slot 3111 of the case.
- the device therefore comprises the first light module 31 arranged to emit the first flat cut-off light beam, the second light module 32 arranged to emit the second light beam extending at least partially above the first light beam and the third light module 33 arranged to emit the segmented light beam, each segment of which is selectively controllable, the third light beam extending at least partially above the second light beam.
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Optics & Photonics (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2013631A FR3118123B1 (fr) | 2020-12-18 | 2020-12-18 | Dispositif d’éclairage de véhicule automobile |
| PCT/EP2021/086324 WO2022129424A1 (fr) | 2020-12-18 | 2021-12-16 | Dispositif d'éclairage de véhicule automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4264125A1 true EP4264125A1 (fr) | 2023-10-25 |
Family
ID=74592246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP21839987.1A Pending EP4264125A1 (fr) | 2020-12-18 | 2021-12-16 | Dispositif d'éclairage de véhicule automobile |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US12270522B2 (fr) |
| EP (1) | EP4264125A1 (fr) |
| CN (1) | CN116601428B (fr) |
| FR (1) | FR3118123B1 (fr) |
| WO (1) | WO2022129424A1 (fr) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021218826A1 (fr) * | 2020-04-30 | 2021-11-04 | 华域视觉科技(上海)有限公司 | Unité de lentille, lentille optique, module d'éclairage, lumière de véhicule et véhicule |
| FR3118123B1 (fr) * | 2020-12-18 | 2023-04-28 | Valeo Vision | Dispositif d’éclairage de véhicule automobile |
| USD1029318S1 (en) * | 2021-03-11 | 2024-05-28 | Hasco Vision Technology Co., Ltd. | Lens module for automobile lamp |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005044699A (ja) * | 2003-07-24 | 2005-02-17 | Koito Mfg Co Ltd | 車両用灯具及び光源モジュール |
| FR2891510B1 (fr) * | 2005-09-30 | 2009-05-15 | Valeo Vision Sa | Dispositif d'eclairage et/ou de signalisation pour vehicule automobile incorporant un materiau presentant une anisotropie thermique |
| FR2919378B1 (fr) * | 2007-07-27 | 2009-10-23 | Valeo Vision Sa | Module d'eclairage pour projecteur de vehicule automobile. |
| AT513738B1 (de) * | 2012-12-20 | 2014-07-15 | Zizala Lichtsysteme Gmbh | Leuchteinheit für einen Scheinwerfer |
| EP3152481A1 (fr) * | 2014-06-08 | 2017-04-12 | Valeo North America, LLC | Système d'éclairage à réflecteur et lentille générant un diagramme de lumière avec ligne de coupure |
| FR3051884A1 (fr) * | 2016-05-27 | 2017-12-01 | Koito Mfg Co Ltd | Lampe de vehicule |
| JPWO2018003888A1 (ja) * | 2016-06-29 | 2019-04-25 | 株式会社小糸製作所 | 車両用灯具 |
| FR3077362B1 (fr) * | 2018-01-31 | 2021-05-28 | Valeo Vision | Module lumineux pour vehicule automobile, et dispositif d’eclairage et/ou de signalisation muni d’un tel module |
| US10539313B2 (en) * | 2018-06-19 | 2020-01-21 | Ford Global Technologies, Llc | Vehicle lighting assemblies and modules |
| FR3118123B1 (fr) * | 2020-12-18 | 2023-04-28 | Valeo Vision | Dispositif d’éclairage de véhicule automobile |
-
2020
- 2020-12-18 FR FR2013631A patent/FR3118123B1/fr active Active
-
2021
- 2021-12-16 WO PCT/EP2021/086324 patent/WO2022129424A1/fr not_active Ceased
- 2021-12-16 US US18/257,481 patent/US12270522B2/en active Active
- 2021-12-16 EP EP21839987.1A patent/EP4264125A1/fr active Pending
- 2021-12-16 CN CN202180084829.2A patent/CN116601428B/zh active Active
-
2025
- 2025-03-06 US US19/071,971 patent/US20250198586A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US12270522B2 (en) | 2025-04-08 |
| FR3118123B1 (fr) | 2023-04-28 |
| CN116601428A (zh) | 2023-08-15 |
| US20250198586A1 (en) | 2025-06-19 |
| US20240027050A1 (en) | 2024-01-25 |
| FR3118123A1 (fr) | 2022-06-24 |
| WO2022129424A1 (fr) | 2022-06-23 |
| CN116601428B (zh) | 2026-03-20 |
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