EP4263286A1 - Light-emitting device for a motor vehicle - Google Patents
Light-emitting device for a motor vehicleInfo
- Publication number
- EP4263286A1 EP4263286A1 EP21840908.4A EP21840908A EP4263286A1 EP 4263286 A1 EP4263286 A1 EP 4263286A1 EP 21840908 A EP21840908 A EP 21840908A EP 4263286 A1 EP4263286 A1 EP 4263286A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- light
- module
- optical system
- rotation
- light module
- 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
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- 238000000429 assembly Methods 0.000 description 6
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 6
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- 230000007935 neutral effect Effects 0.000 description 5
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
- B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
- B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
-
- 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
- F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
-
- 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
- F21S41/28—Cover glass
-
- 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
- F21S41/60—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
- F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving 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
- 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
- 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
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
Definitions
- the invention relates to the field of lighting and/or light signaling in the automotive field, and more particularly to systems for adjusting the position of light modules of a light device for a motor vehicle.
- the field of lighting and/or light signaling of motor vehicles is subject to regulations which require that each motor vehicle be equipped with lights, fulfilling specific safety functions, and in particular main beam and dipped beam headlights .
- Dipped headlights allow a motor vehicle to be seen by other users and its driver to properly see the roadway up to 30 meters away, without dazzling the users present on the road scene.
- the main beam headlights emit more intense light beams so that the driver of the motor vehicle can see the roadway properly, at least 100 meters away in nighttime conditions.
- dipped beam headlights and main beam headlights are implemented by two light modules, each light module being able to comprise an essentially point light source, for example of the light-emitting diode type, and a collector, which comprises a reflecting surface of revolution with an elliptical profile.
- the light source is then located at a first focal point of the reflecting surface, being oriented so as to illuminate essentially in the direction of said surface.
- the light rays are reflected in a convergent manner towards a second focus of the reflective surface of the collector, coincident with a focus of an optical system of the light module, such as a lens, configured to project a light beam reflected by the collector towards the pavement.
- the second light module can in particular be configured to generate a matrix beam which can be turned off or turned on partially so as not to dazzle road users.
- the first light module, intended to form the dipped beam can comprise two distinct light sources, that is to say respectively associated with different optical systems, with different focal lengths within the same module luminous.
- the light modules allowing the implementation of dipped beam headlights and main beam headlights can be grouped together in the same light device arranged on the front face of a motor vehicle, in particular to facilitate the production of optical continuity when switching from dipped beam to main beam.
- the light device is mounted on a motor vehicle, it is necessary to precisely adjust the orientation of each light module, in order to ensure that the light beam projected by each light module correctly illuminates the road in accordance with the regulations and to elsewhere to ensure that the transition from one light to another is as smooth as possible.
- Such systems for adjusting light devices can however have the disadvantage of being bulky and complex to use.
- the adjustments allowed by such systems are all the more complicated as the light modules within the same light device consist of several different types of modules, with different lighting functions.
- the movements of the modules as a whole are made possible by a design of the headlamp such that the modules are housed in a box closed by a closing lens, at a distance from which the modules are arranged.
- a headlamp without lens that is to say a headlamp in which the optical systems of each light module are visible from the outside of the vehicle, being not covered by a closing glass.
- the invention aims to propose, according to a first aspect, a light module for a motor vehicle, comprising at least one light emission assembly capable of emitting light rays and an optical system arranged, on a specific optical axis of the light module , across the light rays and configured to project a light beam, the at least one light emission assembly being arranged in the vicinity of an object focal plane of the optical system.
- the light module is remarkable in that the optical system forms a closing element of the light module and in that the light emission assembly is mounted on a rotary support driven in rotation by a drive system specific, independent of the optical system.
- the present invention proposes a light module inside which the position of the light emission assembly, and in particular of a light source composing it, can be adjusted, by a rotational movement, by with respect to the position of the optical system which moreover participates in forming a closing element of the light module, if necessary visible from outside the vehicle, so that this closing element must remain stationary. It is thus possible to freeze the position of the optical system with respect to a reference which may in particular consist of a headlamp structure or of a structure of the vehicle in which the headlamp is positioned and once this position has been ensured, allow the adjustment of the position of the light emission assembly, and in particular of the light source, with respect to this optical system.
- the applicant has been able to verify empirically that it is possible, when it is desired to raise the level of the beam projected by a light module placed in a headlamp without lens, to replace a movement in translation of a light module in its together within the device by a displacement in rotation only of the light source, and if necessary of the collector, photometric readings having determined that the beam is adjusted in a similar way by displacing in rotation the source independently of the optical system, since an optimal position of the axis of rotation is found.
- light module it is necessary to understand a lighting unit comprising at least the light emission assembly and the optical system arranged on the path of the rays emitted by the light emission assembly.
- the characteristics of light emission set may vary depending on the type of light module, namely a module configured to project a dipped beam or else a module configured to project a driving beam or else a complementary beam capable of forming a driving beam with the dipped beam.
- a light emission assembly includes at least one light source and may include a collector if necessary.
- the light-emitting assembly may in particular comprise a light source of the semiconductor type and may consist of a light-emitting diode (abbreviated as LED) or a plurality of light-emitting diodes formed at the level of an object focal plane of the optical system.
- LED light-emitting diode
- the light source can be associated in the light emission assembly with a collector, towards which the light source emits its rays and which is configured to collimate or deflect the light rays emitted by the light source by direction of the optical system.
- the optical system can then be configured to project an image of the reflective surface of the collector.
- the image projected on the road scene by the light device consists of a direct image of the collector and the shape of the latter influences the image projected on the road scene.
- the module according to the invention may also have one or more of the characteristics mentioned below, taken alone or in combination when these characteristics allow it.
- the light source and the collector are fixed on the same rotating support.
- the light module is associated with a calculation module configured to communicate control instructions to the drive system.
- the calculation module takes into account the position of the axis of rotation of the rotary support to determine by calculation the angle of rotation to be given and therefore the corresponding displacement of the drive system. It is understood that the calculation module can be housed in a casing delimiting the light module or else be placed in a light device in which the light module is also housed, or even be present in the motor vehicle, at a distance from the light module, as long as it is configured to communicate with the drive system.
- the drive system comprises a stepper motor connected to the rotary support via a lever arm of said drive system.
- the position of the light emission assembly is adjusted step by step, via the rotary support, by controlling the motor.
- the motor and the lever arm are housed in a casing participating in delimiting with the closing element a volume for receiving the light module. In this way, it is possible to provide protection for the motor, and for the drive system as a whole, in a volume closed by the closure element.
- the rotary support is made rotatable around an axis of rotation which is perpendicular to the optical axis and at a distance from the light emission assembly.
- the system for adjusting the light emission assembly with respect to the optical system is in particular configured to allow adjustment of the attitude of the light device, that is to say the vertical orientation of the beam emitted by this light device with respect to a horizontal line.
- the optimal position of the axis of rotation around which the rotary support is made mobile is determined by calculation according to mechanical characteristics of the drive system and/or according to optical characteristics of the light module .
- the position of the axis of rotation of the rotary support is in the vicinity of the optical system.
- proximity it is understood that the position of said axis of rotation is in contact with the optical system or separated from the latter by a distance less than or equal to three times, in particular less than or equal to twice the maximum thickness of the optical system.
- the maximum thickness of the optical system is measured along the direction of the optical axis between the first face of the optical system encountered by the light rays emitted by the light source and the last face of the optical system encountered by said rays before leaving the module luminous. It corresponds to the greatest distance measured, in the direction of the optical axis, between these two faces, when traversing the entire optical system transversely to this axis.
- the axis of rotation of the rotary support is arranged on the side of the optical system opposite to the light emission assembly.
- the light module may consist of a module configured to generate a dipped beam.
- the light emission assembly may comprise two light sources offset laterally relative to each other so as to be arranged respectively facing a first optical system associated with a first of the two light sources and a second optical system associated with a second of the two light sources, the closure element being formed by the lateral juxtaposition of the first and second optical systems, the two light sources being arranged on different object focal planes with respect to their associated optical system.
- the light module is remarkable in that the two light sources are driven in rotation around the same axis forming said axis of rotation, independently of the closure element.
- a calculation unit configured to calculate an optimal position of the axis of rotation is parameterized with an equation taking into account only the optical characteristics of the module, independently of the mechanical characteristics of the drive system.
- the collector of such a light module may in particular consist here of a reflector, equipped with a reflective surface configured to deflect the light rays emitted by the light source in the direction of the optical system.
- the reflector has an elliptical or parabolic shape, an elliptical reflector advantageously making it possible to reduce the height of the optical system, consisting for example of a projection lens, provided on the trajectory of the reflected light rays.
- the reflector can be configured in order to present an end edge in the vicinity of the light source with a specific profile, for example on a staircase, which contributes to giving the projected image an appropriate profile, and in particular an appropriate cut-off, for achieving a desired optical function.
- the light module may consist of a module configured to generate a complementary beam to the dipped beam, to form a high beam beam.
- the complementary part of the beam formed by this module can be a matrix beam forming the upper part of the beam and the matrix cutting of this beam makes it possible to switch on or off one of the bands of the beam to avoid dazzling a driver of another vehicle , whether or not one of the sources is switched on.
- the light emission assembly may comprise a plurality of light sources arranged in a matrix in which each light source is capable of being powered independently of the other light sources.
- the collector of such a light module comprising a light emission assembly with a matrix of light sources
- the collector of the light emission assembly may consist of a collimator, crossed by the light rays emitted by the light sources of the matrix which are supplied, said collimator being configured to direct the light rays towards a single optical system of the light module.
- the light emission assembly is arranged in the vicinity of the object focal plane of the optical system and it is more particularly an output face of the collimator which is arranged on or substantially on this object focal plane of the optical system.
- the rotary support comprises a printed circuit board on which are fixed the light source, and if necessary the collector.
- the optical system consists of a projection lens.
- the optical system may consist, more specifically in the context of a compact luminous device, of a thin projection lens, having a thickness, that is to say a dimension perpendicular to the optical axis of the optical system, which may be less than 8.5mm, and for example of the order of 7mm.
- the optical system is particularly arranged close to the light source and, where appropriate, close to the collector of the corresponding module.
- the optical system can be interposed between the first focal point and the second focal point of said collector.
- the invention also relates, according to a second aspect, to a motor vehicle lighting device, comprising a housing and at least two light modules in accordance with what has just been described above and housed in said housing.
- the invention relates to a light device, forming a motor vehicle headlamp, comprising a first light module, the at least one light source of which is able to be made rotatable independently of the optical system of this first module. light and also comprising a second light module, the at least one light source of which is able to be made rotatable independently of the optical system of this second light module.
- a first light module capable of generating a dipped beam and a second module capable of generating a main beam or a beam complementary to the dipped beam are arranged side by side to form a road, and it is ensured by appropriate means specific to each module that the two beams can be adjusted uniformly when the vehicle leaves the factory, for example.
- the closure element of each light module participates in closing the housing of the light device, the closure element of one of the light modules being made in one piece with the closure element of the other light module.
- the light device or motor vehicle headlamp, has a volume closed by a closing window and inside which the components of each light module are arranged, the optical systems being integrated in the closing window.
- the closing window thus comprises in one piece the two optical systems and support portions able to ensure the fixing of the closing window on the housing.
- the closing window is at least partially transparent, and it is configured to integrate the optical systems of at least two light modules of the light device.
- the optical systems we understand both a configuration in which the closing window integrates the optical systems, that is to say that it is made in one piece with the optical systems, or a configuration in which the closing window carries the optical systems, that is to say that the optical systems are attached to the closing window.
- the closing window and the optical systems can thus be made of identical materials, for example polymethyl methacrylate (PMMA) or polycarbonate (PC), or the closing window can be similar to a protective window and be made in a neutral material such as glass or synthetic polymers such as polyetherimide (PEI), in order to carry the optical systems which can themselves be made of polymethyl methacrylate (PMMA) or polycarbonate (PC).
- PMMA polymethyl methacrylate
- PC polycarbonate
- the optical systems consist of defined portions of the closing window, presenting, for example, a convex face facing the light source of the corresponding light module.
- the closing window may have an internal face, facing the inside of the case, which is substantially flat, with the exception of the two zones formed by the optical systems integrated in the closing window, which respectively have a domed shape via their convex face.
- a first light module conforms to what has been described above with two light sources respectively associated with an optical system, that is to say a bifocal system, and a second light module conforms to what was previously described with a plurality of emitting sources arranged in a matrix.
- each light module has an axis of rotation of the at least one light source of this module which is arranged at a distance from the closure element, and the axes of rotation are arranged at distances different from the closure element from one light module to another.
- the light module comprises, in addition to the rotation drive system, means for stopping in position making it possible to freeze the position of the light emission assembly once the latter has pivoted from an appropriate angle.
- the means for stopping in position comprise an actuating element passing through a wall of the projection device.
- the means for stopping in position can be implemented from outside the casing delimiting the volume of the projection device in which the light modules are arranged.
- the sealing of the luminous device is made easy, the sealing only having to be managed at the level of the passage zones through the housing. It is possible to provide sealing elements around these passage zones, advantageously compressed when the light module stops in position.
- the position of the light device as a whole, as previously mentioned, with possible independent drive of each of the light modules arranged inside the light device can be adjusted by a specific adjustment device to the light device.
- a specific adjustment device to the light device.
- the closing window comprises at least two fixing portions, for example by gluing, on the housing of the luminous device, said fixing portions being optically neutral.
- optically neutral it is understood that the rays passing through the material considered are not or almost not deflected.
- each optically neutral zone of the closing window is arranged superimposed on an opaque wall of the case.
- the housing of the light device and the protective glass form a sealed space, configured to protect the light modules from the environment external to the vehicle.
- These opaque walls make it possible in particular to absorb, at least in part, external light rays, for example emitted by the sun or any artificial source of light external to the motor vehicle, likely to enter the internal volume of the light device.
- the presence of the invention also proposes a motor vehicle comprising at least one light device as previously explained, arranged on the front face and/or on the rear face of the motor vehicle.
- FIG. 1 illustrates a vehicle whose front headlight comprises a light device according to one aspect of the invention
- FIG. 1 is a schematic representation of a lighting device according to one aspect of the invention and in particular suitable for equipping the vehicle with the , with a housing housing a first light module and a second light module, each light module being in a first configuration;
- FIG. 1 is a schematic representation equivalent to that of the , wherein the first light module and a second light module, housed in the housing, are in a second configuration;
- FIGS. 2 and 3 is a perspective view of a first light module of the device of FIGS. 2 and 3, comprising two separate light emission assemblies;
- FIGS. 2 and 3 is a perspective view of a second light module of the device of FIGS. 2 and 3, comprising at least one matrix assembly of light sources;
- FIG. 1 is a schematic representation of the first light module of the , illustrating more particularly the means for rotating the first light module, with the position of the axis of rotation which is determined by calculation via an equation taking into account the mechanical characteristics of the drive system;
- FIG. 1 is a schematic representation of the light module of the , more particularly illustrating the means for rotating the second light module, with the position of the axis of rotation which is determined by means of an equation taking into account only the optical characteristics of the module, independently of the mechanical characteristics of the drive system.
- the qualifier “longitudinal” applies to the direction in which the optical axis of at least one of the light modules extends
- the invention relates in particular to a light module 1 of a motor vehicle, comprising at least one light emission assembly 2 and an optical system 4 arranged across the light rays emitted to project a light beam, with the optical system which forms a closure element 6 of the light module 1 and the light emission assembly which is mounted on a rotary support 8 driven in rotation by a specific drive system 10, independently of the optical system.
- Such a light module 1 can in particular be arranged on the front face 12 of the vehicle, in a front headlamp configured to project onto the road scene on which the vehicle is traveling a light beam, whether this is for example a dipped beam or a beam of road.
- the light module 1 can be implemented in a light device 14 of the projector type without lens, as illustrated in the and detailed below.
- a headlamp without glass is such that, for at least one light module housed in the headlamp, no optical element, even if it is optically neutral, is arranged between the optical system 4 of this light module 1 and the road on which the beam created by the light module is projected.
- FIGS 2 and 3 illustrate an embodiment of the invention, with a light device 14 comprising a housing 16 housing a plurality of light modules 1 here two in number.
- the box 16 comprises a plurality of walls defining an internal housing 18 open on an end face facing directly towards the roadway, said end face being closed by means of a closing window 20.
- the walls defining the case may be opaque in order to absorb any light rays external to the light device.
- the light modules 1 housed in the housing are thus protected from the environment external to the vehicle, in particular from bad weather, the accumulation of dirt, or the rays of the sun for example, by the assembly formed by the closing window 20 and through box 16.
- the case 16 comprises in particular a partially open front wall 22, with a first opening 24 formed between a central strip 26 and the upper edge of the front wall which is covered by the closing window 20, and a second slot 28 formed between the central strip 26 and the lower edge of the front wall which is covered by the closing window 20.
- the closing window 20 integrates the optical systems 4 of each of the light modules 1 so that, as mentioned above, no optical element is arranged between these optical systems and the roadway. More specifically, each optical system 4 forms both a closing element 6 of the light module 1 to which it belongs, and participates in forming, with the optical system of the other light module, the closing window 20 of the light device 14 in which are housed the at least two light modules 1.
- the closing window 20 can, in this context of integration, be made of the same material as that of the optical systems 4, or else be made of a second material distinct from that used to make the optical systems, since this second material has no optical effect.
- the protective pane 20 and/or the optical systems 4 integrated in the protective pane can be made of polymethyl methacrylate (PMMA) or of polycarbonate (PC).
- PMMA polymethyl methacrylate
- PC polycarbonate
- Closing window 20 also comprises fixing portions 30 intended to be pressed against the internal face of front wall 22, around slots 24, 26 formed in this front wall.
- the closing window 20 thus forms a protective physical barrier between the light modules and the environment external to the vehicle.
- the light modules 1 are housed inside the casing 16 in such a way that they can be adjusted in rotation inside the internal casing 18 defined by the casing 16 and the closing window 20 of the light device 14 and it is appropriate to note that moreover, this luminous device can be adjustable in position as a whole, with respect to the structure of the vehicle in particular, via a more conventional adjustment device, which can allow movement according to a multiaxial rotational movement of the housing of the device light for example. More particularly, and as shown schematically in Figures 2 and 3, the housing 16 is attached to a structure 32 of the motor vehicle by at least one adjustable fixing member 34 forming this conventional adjustment device as mentioned.
- the adjustment in position of the light modules is particular here in that the light emission assemblies 2 of each light module 1 can be pivoted independently of the fixed position of the optical system 4 associated with each of the light emission assemblies 2.
- the optical systems 4 are fixed with respect to a vehicle frame of reference, and here with respect to the housing 16 of the luminous device 14, being in contact with and directly fixed to the front wall 22 of the housing of the luminous device.
- the light emission assemblies 2 are carried by the housing 16 of the luminous device via a rotary support 8 making it possible to pivot the light emission assemblies 2, and in particular the light sources, with respect to said vehicle reference system and so compared to optical systems 4.
- the rotary support 8 thus participates in forming a system for adjusting the position of the associated light source, and stop means in position associated with this rotary support can be provided to make it possible to freeze the position of the rotary support 8 when the adjustment of the position of the light emission assembly is completed.
- the rotary support 8 is in particular configured to include pivot members participating in forming the axis of rotation and to be linked to a drive system 10 which tends to push on the support to force it to pivot around the axis of rotation. spin.
- each light module 1 comprises on the one hand a light emission assembly 2, with a light source 36 capable of emitting light rays, and a collector 38, configured to collimate or deflect the light rays emitted by the light source 36 along an optical axis 100 of the light module 1, and on the other hand an optical system 4, arranged on the path of the light rays and configured to form with these rays a regulatory light beam.
- each light module 1 it is the light emission assembly 2, and therefore the light source 36 and, where appropriate, the collector 38, which is secured to the rotary support 8.
- Each optical system 4 is specifically part of a light module 1, being specifically associated with a light emission assembly 2, and it is also part, as mentioned above, of the closing window 20 defining with the housing 16 a housing common to both modules.
- the light device 14 is configured to receive in its housing two light modules 1, and more particularly a first light module 5 and a second light module 7.
- the first light module 5 is here configured so as to form a first light beam corresponding to regulatory lighting of the dipped beam type and the second light module 7 is here configured to form a second light beam complementary to the first light beam so that the combination of these two beams can form a regulatory beam of the dipped beam type road.
- the first light module 5 will now be more particularly described, with reference to FIGS. 2 to 4, it being understood that other forms of modules could be implemented when, as mentioned above, at least the emission light of this first light module is configured so that its position can be adjusted by rotation independently of the optical system of this light module.
- the light emission assembly 2 here comprises two light sources 36a, 36b of the semiconductor type, or more particularly two groups of light sources, arranged on a printed circuit board 40 fixed to the rotary support 8.
- These two groups of light sources 36a, 36b are offset from each other laterally, that is to say along a transverse direction perpendicular to the optical axis 500 of the first light module 5 and included in the plane main elongation of the printed circuit board 40, so as to be arranged respectively opposite one of the two optical systems 4a, 4b that comprises the first light module 5, these two optical systems 4a, 4b also being offset laterally l one relative to the other.
- the first light module 5 here forms a double focal system, because the two optical systems 4a, 4b are aligned along a transverse direction perpendicular to the optical axis 500 while the two groups of light sources 36a, 36b are offset longitudinally along the optical axis 500 in addition to their previously mentioned transverse offset.
- the alignment of the optical systems 4a, 4b makes it possible to generate a closure element 6 of the first light module which extends substantially in one piece, mainly perpendicular to the optical axis 500, and the longitudinal offset of the groups of light sources 36a, 36b implies a position of a first group at a first focal distance F1 of the associated optical system 4a and a position of a second group at a second focal distance F2 of the associated optical system 4b.
- This arrangement makes it possible to generate a dipped beam with two portions of the beam which are distinct by their concentration of light rays, so as for example to increase the concentration of light rays at the center and at the level of the cut-off of the light beam projected by the first light module.
- Each light source 36 is configured to emit light rays in a half-space delimited by the main elongation plane of the printed circuit board, in particular in the direction of the collector 38 associated with each light source.
- Each collector 38 has a reflective internal surface configured to deflect the light rays emitted by the light source 36 of the corresponding light module in the direction of the optical system 4 along an optical axis specific to each light module. In this way, the image projected onto the road scene by the light module consists of direct imaging of the collector 38.
- Collector 38 is advantageously made of materials with good heat resistance, for example glass or synthetic polymers such as polycarbonate (PC) or polyetherimide (PEI).
- PC polycarbonate
- PEI polyetherimide
- each collector 38 has a substantially elliptical shape and each light source 36 is particularly arranged at a first focal point of the collector associated with it so that the deflected rays are directed towards a second focal point.
- the elliptical collector arranged on the optical axis 100.
- the optical system 4 is arranged on the optical axis 100 between the two focal points of the elliptical collector, on the path of the deflected light rays, the optical system 4 extending in a direction substantially perpendicular to said optical axis.
- the optical system 4 here has the form of a converging lens, the focal point of which is arranged here in the vicinity of the collector 38.
- the optical system 4 of each light module can in particular consist of a thin projection lens, for example with a thickness of l order of 7mm. It should be noted that such a projection lens configuration is given here only by way of example and that it could be provided, without departing from the context of the invention, a projection lens having a greater thickness and made in several layers.
- the first light module 5 is pivotable about a first axis of rotation 101 perpendicular to the optical axis 500 so that the optical system 4 of this first light module 5 remains fixed.
- Figures 2 and 3 illustrate in particular the first light module 5 within the light device 14 in a first position ( ) corresponding to the mounting position, with an optical axis 500 of the first light module 5 which is included in a main elongation plane of the vehicle, substantially horizontal, and in a second position ( ) corresponding to a trim adjustment position, with the optical axis 500 which is angularly offset, around the first axis of rotation 101.
- the light emission assembly 2 and the rotary support 8 on which the light emission assembly is fixed are rotatable around this first axis of rotation 101.
- the rotary support 8 of the first light module 5 comprises means for guiding in rotation around this first axis of rotation, an embodiment of which will be described below with reference to the in particular, and it is made mobile by means of a drive system 10.
- the drive system here comprises a motor 44 whose operation generates the movement of a lever arm 46 bearing against the support rotary.
- the motor can be controlled via a calculation module housed in the casing of the light device.
- the rotation guide means are configured so that the first axis of rotation 101 is formed at a distance from the light emission assembly 2 of the first light module 5.
- the rotary support 8 comprises branches 48 extending longitudinally, on the sides of the light module, as far as the optical systems 4a, 4b, and the free end of these branches 48, at a distance from the light emission assembly 2, each carries a pivot member 50 participating in forming a pivot connection schematically shown in the figure. It is understood that the rotary support could carry, without this being limiting of the invention, both a male member capable of cooperating with an orifice formed in a casing of the light module or in a wall of the housing of the light device as well as a member female capable of cooperating with a lug present in said casing or said wall.
- the means for guiding in rotation are formed by a lug forming a lateral projection of the rotary support, at the level of the printed circuit board, capable of translate inside a curved groove, the center of curvature of which is positioned on the axis of rotation of the light emission assembly.
- the position of the first axis of rotation 101 is determined by means of an equation taking into account only the optical characteristics of the first light module, independently of the mechanical characteristics of the drive system 10.
- it is possible to find, by a trigonometric calculation in particular, the position of a first axis of rotation 101 making it possible to ensure, during the rotation of the light emitting assembly 2, that the displacement of one of the groups of light sources 4b is greater than the displacement of the other group of light sources 4a and that these different displacements allow uniform adjustment of the two portions of the driving beam formed by each light source.
- D being the distance along the optical axis 500 between the first axis of rotation 101 and the light source 36 farthest from the optical systems 4a, 4b of the light module.
- the second light module 7 will now be more particularly described, with reference to FIGS. 3 to 5, it being understood that other forms of modules could be implemented when, as mentioned above, at least the emission assembly light of this second light module is configured so that its position can be adjusted by rotation independently of the optical system of this light module.
- the light emission assembly 2 of the second light module 7 may comprise a plurality of light sources 36 arranged in a matrix in which each light source is capable of being powered independently of the other light sources.
- the light sources are arranged in two rows 52 arranged one above the other.
- the light sources can be divided into two groups of light sources 36a, 36b, with a matrix of two rows for each of the groups.
- Each light source may in particular consist of a light-emitting diode, controllable independently of the other light sources in order to be able to be switched off or on independently of the switching on of the neighboring sources and thus participate in forming a light pattern with portions of the beam, in particular in the form of strips , off or on.
- the complementary part of the beam formed by this module can be a matrix beam forming the upper part of the beam and the matrix cutting of this beam makes it possible to switch on or off one of the bands of the beam to avoid dazzling a driver of another vehicle , whether or not one of the sources is switched on.
- Each light source 36 is arranged on a printed circuit board 40, here substantially perpendicular to the optical axis 700 of the second light module 7 and this printed circuit board participates in forming the rotary support 8 which will drive the assembly in rotation. light emission 2.
- the printed circuit board of the first light module the printed circuit board and the rotary support may be integral with a body of the light module, forming for example a heatsink configured to dissipate heat generated by the operation of the light source array.
- Each light source 36 is here configured to emit light rays in a half-space delimited by the main elongation plane of the printed circuit board, in particular in the direction of the collector 38.
- the collector 38 here has the form of a collimator, with an input face through which all the rays emitted by the light sources penetrate and an output face 54 which forms an image obtained by the addition of the various rays emitted. This image may in particular include dark bands due to the extinction of such and such light sources opposite the input face of the collector.
- the output face 54 of the collector 38 is arranged on the focal plane Pf, or in the vicinity of the focal plane, of the optical system associated with this second light module.
- Collector 38 is advantageously made of materials with good heat resistance, for example glass or synthetic polymers such as polycarbonate (PC) or polyetherimide (PEI).
- the optical system 4 of the second light module 7 comprises a projection lens capable of being integrated into the closing window 20 common to the two light modules 5, 7.
- an additional lens 56 is positioned upstream of the lens with respect to the direction of circulation of the light rays.
- the second light module 7 is pivotable about a second axis of rotation 102 perpendicular to the optical axis so that the optical system 4 of this second light module 7 remains fixed. More particularly, in this second light module 7, the light emission assembly 2 and the rotary support 8 on which the light emission assembly is fixed are rotatable around this second axis of rotation 102. And it is note that the second axis of rotation 102 is distinct, and more particularly parallel and at a distance, from the first axis of rotation 101.
- the rotary support 8 of the second light module 7 comprises means for guiding in rotation around this second axis of rotation, an embodiment of which will be described below with reference to the in particular, and it is made mobile by means of a drive system 10.
- the drive system here comprises a motor 44 whose operation generates the movement of a lever arm 46 bearing against the support rotary.
- the rotation guide means are configured so that the second axis of rotation 102 is formed at a distance from the light emission assembly 2 of the second light module 7.
- the rotary support 8 comprises at least one branch 48 which extends longitudinally, on one side of the light module, as far as the optical system, and the free end of this branch, at a distance from the light emission assembly, is extended by a lever arm 46 on which the motor 44 of the drive system 10 is able to push. More particularly here, without limitation, the motor is a linear stepper motor.
- the position of the second axis of rotation 102 is determined via a database obtained empirically and taking into account the mechanical characteristics of the drive system 10.
- These mechanical characteristics may in particular be one or more of the following values, namely the angular precision of the stepper motor 44, the maximum travel distance of the output shaft of the stepper motor 44 and the length of the lever 46, and the distance of the second axis of rotation 102 with respect to the focal plane is then defined as a function of these values and of the desired theoretical height of displacement in order to adjust the attitude of this light module.
- the second angle of rotation ⁇ thus associated with the rotational movement of the light emission assembly of the second light module 7 may have a value equal to or different from that of the first angle of rotation ⁇ associated with the rotational movement of the assembly d light emission of the first light module 5, it being understood that an independent adjustment is carried out for each set of light emission of the light modules.
- a mounting and position adjustment method is equivalent, with the rotation of the light emission assembly independently of the optical system participating in forming the light module with the emission assembly light, the rotation of the light emission assembly taking place around an axis of rotation formed at a distance from the light emission assembly.
- the movement of the light emission assembly must be understood in each of these cases as a specific movement of the light source, and of the associated collector if applicable, relative to a fixed frame of reference which notably includes the optical system. In this way, when pivoting the light source, the optical system remains fixed. It is therefore necessary to find an advantageous position of the axis of rotation so that the pivoting of the light source makes it possible to preserve the passage of the majority of the light rays emitted through the optical system.
- the means of stopping in position mentioned above make it possible to freeze the position of the light emission assembly after rotation around the determined axis of rotation.
- These means for stopping in position may consist of mechanical means, and in particular comprise a tapped hole, made in a casing of the light module or in the housing of the light device, a circular arc bore made in the rotary support, and a tightening screw which can be left permanently in the tapped hole by being more or less tight or can be added when the desired position is obtained.
- the stop-in-position means can also consist of electronic means for securing the stop position of the motor provided for driving the light module in rotation.
- sealing members can advantageously be provided on one side of the housing of the light module and/or on one side of the housing of the light device.
- the present invention proposes a light device for a simplified and compact motor vehicle, comprising at least two light modules housed in a housing of the device whose closing window is common with the optical systems of the modules, and which allows adjustment of the position of at least one of the light modules independently of at least the other light module, with a corresponding rotation of the light source independently of the optical systems.
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Abstract
Light-emitting module (1, 5, 7) for a motor vehicle, the module comprising at least one light-emitting assembly (2) able to emit light rays and an optical system (4) placed, on a specific optical axis (100, 500, 700) of the light-emitting module, crosswise to the light rays and configured to project a light beam, the at least one light-emitting assembly (2) being placed in the vicinity of an object focal plane of the optical system (4), characterized in that the optical system (4) forms an element (6) for closing the light-emitting module and in that the light-emitting assembly (2) is mounted on a rotatable carrier (8) that is rotated by a specific drive system (10) independently of the optical system (4).
Description
- L’invention a trait au domaine de l’éclairage et/ou de la signalisation lumineuse dans le domaine automobile, et plus particulièrement aux systèmes de réglage de la position de modules lumineux d’un dispositif lumineux pour véhicule automobile.The invention relates to the field of lighting and/or light signaling in the automotive field, and more particularly to systems for adjusting the position of light modules of a light device for a motor vehicle.
- Le domaine de l’éclairage et/ou de la signalisation lumineuse des véhicules automobiles est soumis à une réglementation qui impose que chaque véhicule automobile soit équipé de feux, remplissant des fonctions spécifiques de sécurité, et notamment des feux de route et des feux de croisement. Les feux de croisement permettent à un véhicule automobile d’être vu des autres usagers et à son conducteur de voir convenablement la chaussée jusqu’à 30 mètres, sans éblouir les usagers présents sur la scène de route. Les feux de route émettent des faisceaux lumineux plus intenses pour que le conducteur du véhicule automobile puisse voir convenablement la chaussée, à au moins 100 mètres en condition de nuit. The field of lighting and/or light signaling of motor vehicles is subject to regulations which require that each motor vehicle be equipped with lights, fulfilling specific safety functions, and in particular main beam and dipped beam headlights . Dipped headlights allow a motor vehicle to be seen by other users and its driver to properly see the roadway up to 30 meters away, without dazzling the users present on the road scene. The main beam headlights emit more intense light beams so that the driver of the motor vehicle can see the roadway properly, at least 100 meters away in nighttime conditions.
- Il est connu que les feux de croisement et les feux de route soient mis en œuvre par deux modules lumineux, chaque module lumineux pouvant comprendre une source lumineuse essentiellement ponctuelle, par exemple de type diode électroluminescente, et un collecteur, qui comporte une surface réfléchissante de révolution avec un profil elliptique. La source lumineuse est alors située au niveau d’un premier foyer de la surface réfléchissante en étant orientée de manière à éclairer essentiellement en direction de ladite surface. Les rayons lumineux sont réfléchis de manière convergente vers un deuxième foyer de la surface réfléchissante du collecteur, confondu avec un foyer d’un système optique du module lumineux, tel qu’une lentille, configuré pour projeter un faisceau lumineux réfléchi par le collecteur vers la chaussée.It is known that dipped beam headlights and main beam headlights are implemented by two light modules, each light module being able to comprise an essentially point light source, for example of the light-emitting diode type, and a collector, which comprises a reflecting surface of revolution with an elliptical profile. The light source is then located at a first focal point of the reflecting surface, being oriented so as to illuminate essentially in the direction of said surface. The light rays are reflected in a convergent manner towards a second focus of the reflective surface of the collector, coincident with a focus of an optical system of the light module, such as a lens, configured to project a light beam reflected by the collector towards the pavement.
- Il est notamment connu d’avoir un dispositif lumineux dans lequel un premier module lumineux apte à générer un faisceau de feu de croisement et dans lequel un deuxième module lumineux est apte à générer un faisceau complémentaire, qui en addition au faisceau de feu de croisement forme un faisceau de route. It is in particular known to have a light device in which a first light module able to generate a dipped beam and in which a second light module is able to generate a complementary beam, which in addition to the dipped beam forms a road beam.
- Dans ce contexte, le deuxième module lumineux peut notamment être configuré pour générer un faisceau matriciel qui peut être éteint ou allumé partiellement pour ne pas éblouir les usagers de la route. Et le premier module lumineux, destiné à former le faisceau de feu de croisement, peut comporter deux sources lumineuses distinctes, c’est-à-dire respectivement associées à des systèmes optiques différents, avec des distances focales différentes au sein d’un même module lumineux.In this context, the second light module can in particular be configured to generate a matrix beam which can be turned off or turned on partially so as not to dazzle road users. And the first light module, intended to form the dipped beam, can comprise two distinct light sources, that is to say respectively associated with different optical systems, with different focal lengths within the same module luminous.
- Au sein d’un véhicule automobile, les modules lumineux permettant la mise en œuvre des feux de croisement et des feux de route peuvent être regroupés dans un même dispositif lumineux disposé en face avant d’un véhicule automobile, notamment pour faciliter la réalisation d’une continuité optique lors du passage des feux de croisement aux feux de route. Lorsque le dispositif lumineux est monté sur un véhicule automobile, il est nécessaire de régler précisément l’orientation de chaque module lumineux, afin de s’assurer que le faisceau lumineux projeté par chaque module lumineux éclaire correctement la route conformément à la réglementation et d’autre part afin de s’assurer que le passage d’un feu à l’autre soit le plus fluide possible. Within a motor vehicle, the light modules allowing the implementation of dipped beam headlights and main beam headlights can be grouped together in the same light device arranged on the front face of a motor vehicle, in particular to facilitate the production of optical continuity when switching from dipped beam to main beam. When the light device is mounted on a motor vehicle, it is necessary to precisely adjust the orientation of each light module, in order to ensure that the light beam projected by each light module correctly illuminates the road in accordance with the regulations and to elsewhere to ensure that the transition from one light to another is as smooth as possible.
- Il est connu pour cela de recourir à différents systèmes de réglage parmi lesquels des moyens de déplacement en translation des modules dans leur ensemble au sein du projecteur ou bien des moyens permettant de contrôler le pivotement du module lumineux dans son ensemble et selon différentes directions de rotation, et notamment selon un axe de rotation sensiblement horizontal et perpendiculaire à l’axe optique des dispositifs lumineux. De tels systèmes de réglages permettent un déplacement de chaque module dans son ensemble, c’est-à-dire de la source lumineuse et du système optique associé, au sein du dispositif, à l’abri derrière une glace fermant le logement dans lequel son reçus les modules. It is known for this to use different adjustment systems, including means for moving the modules in translation as a whole within the headlamp or means making it possible to control the pivoting of the light module as a whole and according to different directions of rotation. , and in particular along a substantially horizontal axis of rotation perpendicular to the optical axis of the light devices. Such adjustment systems allow movement of each module as a whole, that is to say of the light source and the associated optical system, within the device, sheltered behind a glass closing the housing in which its received the modules.
- De tels systèmes de réglage des dispositifs lumineux peuvent toutefois présenter l’inconvénient d’être volumineux et d’utilisation complexe. Les réglages permis par de tels systèmes sont d’autant plus compliqués que les modules lumineux au sein d’un même dispositif lumineux consistent en plusieurs types de modules différents, avec des fonctions d’éclairage différentes.Such systems for adjusting light devices can however have the disadvantage of being bulky and complex to use. The adjustments allowed by such systems are all the more complicated as the light modules within the same light device consist of several different types of modules, with different lighting functions.
- Par ailleurs, les déplacements des modules dans leur ensemble sont rendus possibles par une conception du projecteur tel que les modules sont logés dans un boîtier fermé par une glace de fermeture, à distance de laquelle sont agencés les modules. Or, il peut être souhaité par un constructeur automobile de prévoir un projecteur sans glace, c’est-à-dire un projecteur dans lequel les systèmes optiques de chaque module lumineux sont apparents depuis l’extérieur du véhicule, en étant non recouverts par une glace de fermeture.Furthermore, the movements of the modules as a whole are made possible by a design of the headlamp such that the modules are housed in a box closed by a closing lens, at a distance from which the modules are arranged. However, it may be desired by a car manufacturer to provide a headlamp without lens, that is to say a headlamp in which the optical systems of each light module are visible from the outside of the vehicle, being not covered by a closing glass.
- Dans ce contexte, l’invention vise à proposer selon un premier aspect un module lumineux de véhicule automobile, comportant au moins un ensemble d’émission lumineuse apte à émettre des rayons lumineux et un système optique disposé, sur un axe optique spécifique du module lumineux, en travers des rayons lumineux et configuré pour projeter un faisceau lumineux, l’au moins un ensemble d’émission lumineuse étant disposé au voisinage d’un plan focal objet du système optique. In this context, the invention aims to propose, according to a first aspect, a light module for a motor vehicle, comprising at least one light emission assembly capable of emitting light rays and an optical system arranged, on a specific optical axis of the light module , across the light rays and configured to project a light beam, the at least one light emission assembly being arranged in the vicinity of an object focal plane of the optical system.
- Selon l’invention, le module lumineux est remarquable en ce que le système optique forme un élément de fermeture du module lumineux et en ce que l’ensemble d’émission lumineuse est monté sur un support rotatif entraîné en rotation par un système d’entraînement spécifique, indépendamment du système optique.According to the invention, the light module is remarkable in that the optical system forms a closing element of the light module and in that the light emission assembly is mounted on a rotary support driven in rotation by a drive system specific, independent of the optical system.
- En d’autres termes, la présente invention propose un module lumineux à l’intérieur duquel la position de l’ensemble d’émission lumineuse, et notamment d’une source lumineuse le composant, peut être ajustée, par un mouvement de rotation, par rapport à la position du système optique qui par ailleurs participe à former un élément de fermeture du module lumineux, le cas échéant visible de l’extérieur du véhicule, de sorte que cet élément de fermeture doit rester immobile. On peut ainsi figer la position du système optique par rapport à un référentiel qui peut notamment consister en une structure de projecteur ou en une structure du véhicule dans lequel est positionné le projecteur et une fois cette position assurée permettre le réglage de la position de l’ensemble d’émission lumineuse, et notamment de la source lumineuse, par rapport à ce système optique.In other words, the present invention proposes a light module inside which the position of the light emission assembly, and in particular of a light source composing it, can be adjusted, by a rotational movement, by with respect to the position of the optical system which moreover participates in forming a closing element of the light module, if necessary visible from outside the vehicle, so that this closing element must remain stationary. It is thus possible to freeze the position of the optical system with respect to a reference which may in particular consist of a headlamp structure or of a structure of the vehicle in which the headlamp is positioned and once this position has been ensured, allow the adjustment of the position of the light emission assembly, and in particular of the light source, with respect to this optical system.
- La demanderesse a pu vérifier de manière empirique qu’il était possible, lorsque l’on souhaite relever l’assiette du faisceau projeté par un module lumineux disposé dans un projecteur sans glace, de remplacer un déplacement en translation d’un module lumineux dans son ensemble au sein du dispositif par un déplacement en rotation uniquement de la source lumineuse, et le cas échéant du collecteur, des relevés photométriques ayant déterminés que le faisceau est réglé de façon similaire en déplaçant en rotation la source indépendamment du système optique, dès lors qu’une position optimale de l’axe de rotation est trouvée.The applicant has been able to verify empirically that it is possible, when it is desired to raise the level of the beam projected by a light module placed in a headlamp without lens, to replace a movement in translation of a light module in its together within the device by a displacement in rotation only of the light source, and if necessary of the collector, photometric readings having determined that the beam is adjusted in a similar way by displacing in rotation the source independently of the optical system, since an optimal position of the axis of rotation is found.
- Par module lumineux, il convient de comprendre une unité d’éclairage comportant au moins l’ensemble d’émission lumineuse et le système optique disposé sur le trajet des rayons émis par l’ensemble d’émission lumineuse. Selon le type de module lumineux, à savoir un module configuré pour projeter un faisceau de croisement ou bien un module configuré pour projeter un faisceau de route ou bien un faisceau complémentaire apte à former avec le faisceau de croisement un faisceau de route, les caractéristiques de l’ensemble d’émission lumineuse peuvent varier.By light module, it is necessary to understand a lighting unit comprising at least the light emission assembly and the optical system arranged on the path of the rays emitted by the light emission assembly. Depending on the type of light module, namely a module configured to project a dipped beam or else a module configured to project a driving beam or else a complementary beam capable of forming a driving beam with the dipped beam, the characteristics of light emission set may vary.
- Un ensemble d’émission lumineuse comprend au moins une source lumineuse et peut comprendre le cas échéant un collecteur. L’ensemble d’émission lumineuse peut notamment comporter une source lumineuse du type à semi-conducteur et peut consister en une diode électroluminescente (abrégée LED pour l’anglais « light-emitting diode ») ou une pluralité de diodes électroluminescentes ménagée au niveau d’un plan focal objet du système optique.A light emission assembly includes at least one light source and may include a collector if necessary. The light-emitting assembly may in particular comprise a light source of the semiconductor type and may consist of a light-emitting diode (abbreviated as LED) or a plurality of light-emitting diodes formed at the level of an object focal plane of the optical system.
- Tel qu’évoqué précédemment, la source lumineuse peut être associée dans l’ensemble d’émission lumineuse à un collecteur, en direction duquel la source lumineuse émet ses rayons et qui est configuré pour collimater ou dévier les rayons lumineux émis par la source lumineuse en direction du système optique. Le système optique peut alors être configuré pour projeter une image de la surface réfléchissante du collecteur. En d’autres termes, l’image projetée sur la scène de route par le dispositif lumineux consiste en une imagerie directe du collecteur et la forme de celui-ci influe sur l’image projetée sur la scène de route.As mentioned previously, the light source can be associated in the light emission assembly with a collector, towards which the light source emits its rays and which is configured to collimate or deflect the light rays emitted by the light source by direction of the optical system. The optical system can then be configured to project an image of the reflective surface of the collector. In other words, the image projected on the road scene by the light device consists of a direct image of the collector and the shape of the latter influences the image projected on the road scene.
- Le module selon l’invention peut en outre présenter une ou plusieurs des caractéristiques mentionnées ci-dessous, prises seules ou en combinaison lorsque ces caractéristiques le permettent.The module according to the invention may also have one or more of the characteristics mentioned below, taken alone or in combination when these characteristics allow it.
- Selon une caractéristique de l’invention, la source lumineuse et le collecteur sont fixés sur un même support rotatif.According to a characteristic of the invention, the light source and the collector are fixed on the same rotating support.
- Selon une caractéristique de l’invention, le module lumineux est associé à un module de calcul configuré pour communiquer des instructions de commande au système d’entraînement. Dans ce contexte d’un réglage automatisé, le module de calcul tient compte de la position de l’axe de rotation du support rotatif pour déterminer par le calcul l’angle de rotation à donner et donc le déplacement correspondant du système d’entraînement. On comprend que le module de calcul peut être logé dans un carter délimitant le module lumineux ou bien être disposé dans un dispositif lumineux dans lequel est également logé le module lumineux, ou bien encore être présent dans le véhicule automobile, à distance du module lumineux, dès lors qu’il est configuré pour communiquer avec le système d’entraînement.According to one characteristic of the invention, the light module is associated with a calculation module configured to communicate control instructions to the drive system. In this context of automated adjustment, the calculation module takes into account the position of the axis of rotation of the rotary support to determine by calculation the angle of rotation to be given and therefore the corresponding displacement of the drive system. It is understood that the calculation module can be housed in a casing delimiting the light module or else be placed in a light device in which the light module is also housed, or even be present in the motor vehicle, at a distance from the light module, as long as it is configured to communicate with the drive system.
- Selon une caractéristique de l’invention, le système d’entraînement comporte un moteur pas à pas relié au support rotatif par l’intermédiaire d’un bras de levier dudit système d’entraînement. En d’autres termes, la position de l’ensemble d’émission lumineuse est ajustée pas à pas, via le support rotatif, par un pilotage du moteur.According to one characteristic of the invention, the drive system comprises a stepper motor connected to the rotary support via a lever arm of said drive system. In other words, the position of the light emission assembly is adjusted step by step, via the rotary support, by controlling the motor.
- Selon une caractéristique de l’invention, le moteur et le bras de levier sont logés dans un boîtier participant à délimiter avec l’élément de fermeture un volume de réception du module lumineux. De la sorte, on peut réaliser une protection du moteur, et du système d’entraînement dans son ensemble, dans un volume fermé par l’élément de fermeture.According to one characteristic of the invention, the motor and the lever arm are housed in a casing participating in delimiting with the closing element a volume for receiving the light module. In this way, it is possible to provide protection for the motor, and for the drive system as a whole, in a volume closed by the closure element.
- Selon une caractéristique de l’invention, le support rotatif est rendu mobile en rotation autour d’un axe de rotation qui est perpendiculaire à l’axe optique et à distance de l’ensemble d’émission lumineuse. En d’autres termes, le système de réglage de l’ensemble d’émission lumineuse par rapport au système optique est notamment configuré pour permettre le réglage de l’assiette du dispositif lumineux, c’est-à-dire l’orientation verticale du faisceau émis par ce dispositif lumineux par rapport à une ligne horizontale.According to a characteristic of the invention, the rotary support is made rotatable around an axis of rotation which is perpendicular to the optical axis and at a distance from the light emission assembly. In other words, the system for adjusting the light emission assembly with respect to the optical system is in particular configured to allow adjustment of the attitude of the light device, that is to say the vertical orientation of the beam emitted by this light device with respect to a horizontal line.
- Selon une caractéristique de l’invention, la position optimale de l’axe de rotation autour duquel le support rotatif est rendu mobile est déterminée par calcul en fonction de caractéristiques mécaniques du système d’entraînement et/ou en fonction de caractéristiques optiques du module lumineux.According to a characteristic of the invention, the optimal position of the axis of rotation around which the rotary support is made mobile is determined by calculation according to mechanical characteristics of the drive system and/or according to optical characteristics of the light module .
- Selon une caractéristique de l’invention, la position de l’axe de rotation du support rotatif est au voisinage du système optique. Par voisinage on comprend que la position dudit axe de rotation est au contact du système optique ou écarté de ce dernier d’une distance inférieure ou égale à trois fois, notamment inférieure ou égale à deux fois l’épaisseur maximale du système optique. L’épaisseur maximale du système optique est mesurée selon la direction de l’axe optique entre la première face du système optique rencontrée par les rayons lumineux émis par la source lumineuse et la dernière face du système optique rencontrée par lesdits rayons avant de sortir du module lumineux. Elle correspond à la plus grande distance mesurée, selon la direction de l’axe optique, entre ces deux faces, lorsqu’on parcourt transversalement à cet axe l’ensemble du système optique.According to a characteristic of the invention, the position of the axis of rotation of the rotary support is in the vicinity of the optical system. By proximity, it is understood that the position of said axis of rotation is in contact with the optical system or separated from the latter by a distance less than or equal to three times, in particular less than or equal to twice the maximum thickness of the optical system. The maximum thickness of the optical system is measured along the direction of the optical axis between the first face of the optical system encountered by the light rays emitted by the light source and the last face of the optical system encountered by said rays before leaving the module luminous. It corresponds to the greatest distance measured, in the direction of the optical axis, between these two faces, when traversing the entire optical system transversely to this axis.
- Selon une caractéristique de l’invention, l’axe de rotation du support rotatif est disposé du côté du système optique opposé à l’ensemble d’émission lumineuse. According to one characteristic of the invention, the axis of rotation of the rotary support is arranged on the side of the optical system opposite to the light emission assembly.
- Selon une caractéristique de l’invention, le module lumineux peut consister en un module configuré pour générer un faisceau de croisement. According to a feature of the invention, the light module may consist of a module configured to generate a dipped beam.
- L’ensemble d’émission lumineuse peut comporter deux sources lumineuses décalées latéralement l’une par rapport à l’autre de manière à être disposées respectivement en regard d’un premier système optique associé à une première des deux sources lumineuses et d’un deuxième système optique associé à une deuxième des deux sources lumineuses, l’élément de fermeture étant formé par la juxtaposition latérale des premier et deuxième systèmes optiques, les deux sources lumineuses étant disposées sur des plans focaux objets différents par rapport à leur système optique associé. Le module lumineux est remarquable en ce que les deux sources lumineuses sont entraînées en rotation autour d’un même axe formant ledit axe de rotation, indépendamment de l’élément de fermeture.The light emission assembly may comprise two light sources offset laterally relative to each other so as to be arranged respectively facing a first optical system associated with a first of the two light sources and a second optical system associated with a second of the two light sources, the closure element being formed by the lateral juxtaposition of the first and second optical systems, the two light sources being arranged on different object focal planes with respect to their associated optical system. The light module is remarkable in that the two light sources are driven in rotation around the same axis forming said axis of rotation, independently of the closure element.
- Dans ce contexte d’un module lumineux bifocal, c’est-à-dire présentant deux plans focaux décalés l’un par rapport à l’autre, une unité de calcul configurée pour calculer une position optimale de l’axe de rotation est paramétrée avec une équation prenant en compte uniquement les caractéristiques optiques du module, indépendamment des caractéristiques mécaniques du système d’entraînement. Ainsi, on s’assure de trouver, par un calcul trigonométrique notamment, un axe de rotation permettant, lors de la rotation de l’ensemble d’émission lumineuse, que le déplacement de l’une des sources est plus important que le déplacement de l’autre source et que ces déplacements différents permettent un réglage homogène des deux portions du faisceau de route formé par chaque source lumineuse. In this context of a bifocal light module, that is to say having two focal planes offset relative to each other, a calculation unit configured to calculate an optimal position of the axis of rotation is parameterized with an equation taking into account only the optical characteristics of the module, independently of the mechanical characteristics of the drive system. Thus, it is ensured to find, by a trigonometric calculation in particular, an axis of rotation allowing, during the rotation of the light emission assembly, that the displacement of one of the sources is greater than the displacement of the other source and that these different movements allow uniform adjustment of the two portions of the main beam formed by each light source.
- L’équation peut notamment s’écrire de la sorte :The equation can be written as:
-
- - D, la distance le long de l’axe optique entre l’axe de rotation et la source lumineuse la plus éloignée du système optique du module lumineux ;- D, the distance along the optical axis between the axis of rotation and the light source furthest from the optical system of the light module;
- - F1, F2, la distance du plan focal objet pour chacune des sources lumineuses, avec F1 la distance associée à la source la plus proche du système optique du module lumineux ;- F1, F2, the distance from the object focal plane for each of the light sources, with F1 the distance associated with the source closest to the optical system of the light module;
- - H1, H2, la hauteur de réglage théorique de chacune des sources lumineuses, avec H1 la hauteur associée à la source la plus proche du système optique du module lumineux.- H1, H2, the theoretical adjustment height of each of the light sources, with H1 the height associated with the source closest to the optical system of the light module.
- Le collecteur d’un tel module lumineux peut notamment consister ici en un réflecteur, équipé d’une surface réfléchissante configurée pour dévier les rayons lumineux émis par la source lumineuse en direction du système optique. Le réflecteur présente une forme elliptique ou parabolique, un réflecteur elliptique permettant, avantageusement de réduire la hauteur du système optique, consistant par exemple en une lentille de projection, ménagée sur la trajectoire des rayons lumineux réfléchis. The collector of such a light module may in particular consist here of a reflector, equipped with a reflective surface configured to deflect the light rays emitted by the light source in the direction of the optical system. The reflector has an elliptical or parabolic shape, an elliptical reflector advantageously making it possible to reduce the height of the optical system, consisting for example of a projection lens, provided on the trajectory of the reflected light rays.
- Le réflecteur peut être configuré afin de présenter un bord d’extrémité au voisinage de la source lumineuse au profil spécifique, par exemple en marche d’escalier, qui participe à donner à l’image projetée un profil approprié, et notamment une coupure appropriée, pour la réalisation d’une fonction optique souhaitée. The reflector can be configured in order to present an end edge in the vicinity of the light source with a specific profile, for example on a staircase, which contributes to giving the projected image an appropriate profile, and in particular an appropriate cut-off, for achieving a desired optical function.
- Selon une caractéristique de l’invention, le module lumineux peut consister en un module configuré pour générer un faisceau complémentaire au faisceau de croisement, pour former un faisceau de feu de route.According to one characteristic of the invention, the light module may consist of a module configured to generate a complementary beam to the dipped beam, to form a high beam beam.
- La partie complémentaire du faisceau formée par ce module peut être un faisceau matriciel formant la partie supérieure du faisceau et le découpage matriciel de ce faisceau permet d’allumer ou éteindre une des bandes du faisceau pour éviter d’éblouir un conducteur d’un autre véhicule, par allumage ou non d’une des sources.The complementary part of the beam formed by this module can be a matrix beam forming the upper part of the beam and the matrix cutting of this beam makes it possible to switch on or off one of the bands of the beam to avoid dazzling a driver of another vehicle , whether or not one of the sources is switched on.
- L’ensemble d’émission lumineuse peut comporter une pluralité de sources lumineuses agencées en une matrice dans laquelle chaque source lumineuse est apte à être alimentée indépendamment des autres sources lumineuses. The light emission assembly may comprise a plurality of light sources arranged in a matrix in which each light source is capable of being powered independently of the other light sources.
- Dans ce contexte d’un ensemble d’émission lumineuse avec une matrice de sources lumineuses, une unité de calcul configurée pour calculer une position optimale de l’axe de rotation comporte une mémoire de stockage dans laquelle est stockée une base de données obtenue de façon empirique et prenant en compte les caractéristiques mécaniques du système d’entraînement.In this context of a light emission assembly with a matrix of light sources, a calculation unit configured to calculate an optimal position of the axis of rotation comprises a storage memory in which is stored a database obtained in such a way empirical and taking into account the mechanical characteristics of the drive system.
- Le collecteur d’un tel module lumineux, comportant un ensemble d’émission lumineuse avec une matrice de sources lumineuses, le collecteur de l’ensemble d’émission lumineuse peut consister en un collimateur, traversé par les rayons lumineux émis par les sources lumineuses de la matrice qui sont alimentées, ledit collimateur étant configuré pour diriger les rayons lumineux vers un système optique unique du module lumineux. Tel qu’évoqué, l’ensemble d’émission lumineuse est agencé au voisinage du plan focal objet du système optique et c’est plus particulièrement une face de sortie du collimateur qui est disposée sur ou sensiblement sur ce plan focal objet du système optique.The collector of such a light module, comprising a light emission assembly with a matrix of light sources, the collector of the light emission assembly may consist of a collimator, crossed by the light rays emitted by the light sources of the matrix which are supplied, said collimator being configured to direct the light rays towards a single optical system of the light module. As mentioned, the light emission assembly is arranged in the vicinity of the object focal plane of the optical system and it is more particularly an output face of the collimator which is arranged on or substantially on this object focal plane of the optical system.
- Selon des caractéristiques de l’invention, le support rotatif comporte une plaque de circuits imprimés sur lequel sont fixés la source lumineuse, et le cas échéant le collecteur.According to characteristics of the invention, the rotary support comprises a printed circuit board on which are fixed the light source, and if necessary the collector.
- Selon une caractéristique de l’invention, le système optique consiste en une lentille de projection. Le système optique peut consister, plus spécifiquement dans le cadre d’un dispositif lumineux compact, en une lentille de projection mince, présentant une épaisseur, c’est-à-dire une dimension perpendiculaire à l’axe optique du système optique, qui peut être inférieure à 8,5mm, et par exemple de l’ordre de 7mm. Afin de réduire l’encombrement d’un module lumineux et d’un dispositif lumineux dans lequel ce module lumineux est susceptible d’être intégré, le système optique est particulièrement disposé à proximité de la source lumineuse et le cas échéant à proximité du collecteur du module correspondant. A titre d’exemple, lorsque le module comporte un collecteur et que celui-ci présente une forme elliptique, le système optique peut être interposé entre le premier foyer et le deuxième foyer dudit collecteur.According to a characteristic of the invention, the optical system consists of a projection lens. The optical system may consist, more specifically in the context of a compact luminous device, of a thin projection lens, having a thickness, that is to say a dimension perpendicular to the optical axis of the optical system, which may be less than 8.5mm, and for example of the order of 7mm. In order to reduce the size of a light module and of a light device in which this light module is capable of being integrated, the optical system is particularly arranged close to the light source and, where appropriate, close to the collector of the corresponding module. By way of example, when the module comprises a collector and when the latter has an elliptical shape, the optical system can be interposed between the first focal point and the second focal point of said collector.
- L’invention concerne également, selon un deuxième aspect, un dispositif lumineux de véhicule automobile, comprenant un boîtier et au moins deux modules lumineux conformes à ce qui vient d’être précédemment décrit et logés dans ledit boîtier.The invention also relates, according to a second aspect, to a motor vehicle lighting device, comprising a housing and at least two light modules in accordance with what has just been described above and housed in said housing.
- En d’autres termes, l’invention concerne un dispositif lumineux, formant un projecteur de véhicule automobile, comportant un premier module lumineux dont l’au moins une source lumineuse est apte à être rendue mobile en rotation indépendamment du système optique de ce premier module lumineux et comportant par ailleurs un deuxième module lumineux dont l’au moins une source lumineuse est apte à être rendue mobile en rotation indépendamment du système optique de ce deuxième module lumineux. Ainsi, au sein d’un même projecteur, on dispose côte à côte un premier module lumineux apte à générer un faisceau de croisement et un deuxième module apte à générer un faisceau de route ou un faisceau complémentaire du faisceau de croisement pour former un faisceau de route, et on assure par des moyens appropriés spécifiques à chaque module que les deux faisceaux puissent être réglées de façon homogène à la sortie en usine du véhicule par exemple.In other words, the invention relates to a light device, forming a motor vehicle headlamp, comprising a first light module, the at least one light source of which is able to be made rotatable independently of the optical system of this first module. light and also comprising a second light module, the at least one light source of which is able to be made rotatable independently of the optical system of this second light module. Thus, within the same headlamp, a first light module capable of generating a dipped beam and a second module capable of generating a main beam or a beam complementary to the dipped beam are arranged side by side to form a road, and it is ensured by appropriate means specific to each module that the two beams can be adjusted uniformly when the vehicle leaves the factory, for example.
- Selon une caractéristique de l’invention, l’élément de fermeture de chaque module lumineux participe à fermer le boîtier du dispositif lumineux, l’élément de fermeture d’un des modules lumineux étant réalisé d’un seul tenant avec l’élément de fermeture de l’autre module lumineux.According to one characteristic of the invention, the closure element of each light module participates in closing the housing of the light device, the closure element of one of the light modules being made in one piece with the closure element of the other light module.
- En d’autres termes, le dispositif lumineux, ou projecteur de véhicule automobile, présente un volume fermé par une vitre de fermeture et à l’intérieur duquel sont disposés les composants de chaque module lumineux, les systèmes optiques étant intégrés dans la vitre de fermeture. La vitre de fermeture comporte ainsi d’un seul tenant les deux systèmes optiques et des portions de support aptes à assurer la fixation de la vitre de fermeture sur le boîtier. In other words, the light device, or motor vehicle headlamp, has a volume closed by a closing window and inside which the components of each light module are arranged, the optical systems being integrated in the closing window. . The closing window thus comprises in one piece the two optical systems and support portions able to ensure the fixing of the closing window on the housing.
- Plus particulièrement, la vitre de fermeture est au moins en partie transparente, et elle est configurée pour intégrer les systèmes optiques d’au moins deux modules lumineux du dispositif lumineux. Par intégrer les systèmes optiques, on comprend aussi bien une configuration dans laquelle la vitre de fermeture intègre les systèmes optiques, c’est-à-dire qu’elle est réalisée d’un seul tenant avec les systèmes optiques, ou bien une configuration dans laquelle la vitre de fermeture porte les systèmes optiques, c’est-à-dire que les systèmes optiques sont rapportés sur la vitre de fermeture. La vitre de fermeture et les systèmes optiques peuvent ainsi être réalisés dans des matériaux identiques, par exemple en polyméthacrylate de méthyle (PMMA) ou en polycarbonate (PC), ou la vitre de fermeture peut être analogue à une vitre de protection et être réalisé dans un matériau neutre tel que du verre ou des polymères synthétiques comme du polyétherimide (PEI), afin de porter les systèmes optiques qui peuvent eux être réalisés en polyméthacrylate de méthyle (PMMA) ou en polycarbonate (PC).More particularly, the closing window is at least partially transparent, and it is configured to integrate the optical systems of at least two light modules of the light device. By integrating the optical systems, we understand both a configuration in which the closing window integrates the optical systems, that is to say that it is made in one piece with the optical systems, or a configuration in which the closing window carries the optical systems, that is to say that the optical systems are attached to the closing window. The closing window and the optical systems can thus be made of identical materials, for example polymethyl methacrylate (PMMA) or polycarbonate (PC), or the closing window can be similar to a protective window and be made in a neutral material such as glass or synthetic polymers such as polyetherimide (PEI), in order to carry the optical systems which can themselves be made of polymethyl methacrylate (PMMA) or polycarbonate (PC).
- Selon une caractéristique de l’invention, les systèmes optiques consistent en des portions définies de la vitre de fermeture, présentant, par exemple, une face convexe tournée vers la source lumineuse du module lumineux correspondant. En d’autres termes, la vitre de fermeture peut présenter une face interne, tournée vers l’intérieur du boîtier, sensiblement plane, à l’exception des deux zones formées par les systèmes optiques intégrées dans la vitre de fermeture, qui présentent respectivement une forme bombée par l’intermédiaire de leur face convexe.According to one characteristic of the invention, the optical systems consist of defined portions of the closing window, presenting, for example, a convex face facing the light source of the corresponding light module. In other words, the closing window may have an internal face, facing the inside of the case, which is substantially flat, with the exception of the two zones formed by the optical systems integrated in the closing window, which respectively have a domed shape via their convex face.
- Selon une caractéristique de l’invention, un premier module lumineux est conforme à ce qui a été décrit précédemment avec deux sources lumineuses respectivement associées à un système optique, c’est-à-dire un système bifocal, et un deuxième module lumineux est conforme à ce qui a été décrit précédemment avec une pluralité de sources émettrices agencées en une matrice.According to one characteristic of the invention, a first light module conforms to what has been described above with two light sources respectively associated with an optical system, that is to say a bifocal system, and a second light module conforms to what was previously described with a plurality of emitting sources arranged in a matrix.
- Selon une caractéristique de l’invention, chaque module lumineux présente un axe de rotation de l’au moins une source lumineuse de ce module qui est disposé à une distance de l’élément de fermeture, et les axes de rotation sont disposés à des distances différentes de l’élément de fermeture d’un module lumineux à l’autre. According to one characteristic of the invention, each light module has an axis of rotation of the at least one light source of this module which is arranged at a distance from the closure element, and the axes of rotation are arranged at distances different from the closure element from one light module to another.
- Selon une caractéristique de l’invention, le module lumineux comporte, outre le système d’entraînement en rotation, des moyens d’arrêt en position permettant de figer la position de l’ensemble d’émission lumineuse une fois que celui-ci a pivoté d’un angle approprié.According to one characteristic of the invention, the light module comprises, in addition to the rotation drive system, means for stopping in position making it possible to freeze the position of the light emission assembly once the latter has pivoted from an appropriate angle.
- Selon une caractéristique de l’invention, les moyens d’arrêt en position comportent un élément d’actionnement traversant une paroi du dispositif de projection. De la sorte, les moyens d’arrêt en position peuvent être mis en œuvre depuis l’extérieur du boîtier délimitant le volume du dispositif de projection dans lequel les modules lumineux sont disposés. La réalisation de l’étanchéité du dispositif lumineux est rendue facile, l’étanchéité étant uniquement à gérer au niveau des zones de passage à travers le boîtier. On peut prévoir des éléments d’étanchéité autour de ces zones de passage, avantageusement comprimés lors de l’arrêt en position du module lumineux.According to one characteristic of the invention, the means for stopping in position comprise an actuating element passing through a wall of the projection device. In this way, the means for stopping in position can be implemented from outside the casing delimiting the volume of the projection device in which the light modules are arranged. The sealing of the luminous device is made easy, the sealing only having to be managed at the level of the passage zones through the housing. It is possible to provide sealing elements around these passage zones, advantageously compressed when the light module stops in position.
- Selon une caractéristique de l’invention, la position du dispositif lumineux dans son ensemble, tel que précédemment évoqué, avec un entraînement indépendant possible de chacun des modules lumineux disposés à l’intérieur du dispositif lumineux, peut être réglée par un dispositif de réglage spécifique au dispositif lumineux. Ainsi, il est possible avantageusement, du fait de ce réglage étagé avec d’une part un réglage indépendant des sources lumineuses des modules lumineux et d’autre part un réglage simultané de ces modules lumineux par un déplacement du boîtier logeant ces modules lumineux dans son ensemble, de réaliser un réglage optimal en plusieurs séquences de réglages dans des lieux différents. Notamment, il est possible de régler chez le fabricant du dispositif lumineux la position de chacun des ensembles d’émission lumineuses les uns par rapport aux autres, afin de s’assurer que dans une position donnée du dispositif lumineux, les faisceaux projetés par le premier module lumineux et par le deuxième module lumineux sont cohérents, puis de régler la position du dispositif lumineux dans son ensemble lors de son montage sur le véhicule. According to a characteristic of the invention, the position of the light device as a whole, as previously mentioned, with possible independent drive of each of the light modules arranged inside the light device, can be adjusted by a specific adjustment device to the light device. Thus, it is advantageously possible, because of this staggered adjustment with on the one hand an independent adjustment of the light sources of the light modules and on the other hand a simultaneous adjustment of these light modules by a displacement of the housing housing these light modules in its together, to carry out an optimal adjustment in several sequences of adjustments in different places. In particular, it is possible to adjust at the manufacturer of the light device the position of each of the light emission assemblies relative to each other, in order to ensure that in a given position of the light device, the beams projected by the first light module and by the second light module are consistent, then to adjust the position of the light device as a whole when it is mounted on the vehicle.
- Selon une caractéristique de l’invention, la vitre de fermeture comporte au moins deux portions de fixation, par exemple par collage, sur le boîtier du dispositif lumineux, lesdites portions de fixation étant optiquement neutres. Par optiquement neutre, on comprend que les rayons traversant la matière considérée ne sont pas ou presque pas déviés.According to one characteristic of the invention, the closing window comprises at least two fixing portions, for example by gluing, on the housing of the luminous device, said fixing portions being optically neutral. By optically neutral, it is understood that the rays passing through the material considered are not or almost not deflected.
- Selon une caractéristique de l’invention, chaque zone optiquement neutre de la vitre de fermeture est disposée en superposition d’une paroi opaque du boîtier. De la sorte, le boîtier du dispositif lumineux et la vitre de protection forment un espace étanche, configuré pour protéger les modules lumineux de l’environnement externe au véhicule. Ces parois opaques permettent notamment d’absorber, au moins en partie, des rayons lumineux externes, par exemple émis par le soleil ou toute source artificielle de lumière externe au véhicule automobile, susceptibles d’entrer dans le volume interne du dispositif lumineux.According to one characteristic of the invention, each optically neutral zone of the closing window is arranged superimposed on an opaque wall of the case. In this way, the housing of the light device and the protective glass form a sealed space, configured to protect the light modules from the environment external to the vehicle. These opaque walls make it possible in particular to absorb, at least in part, external light rays, for example emitted by the sun or any artificial source of light external to the motor vehicle, likely to enter the internal volume of the light device.
- La présence invention propose également un véhicule automobile comprenant au moins un dispositif lumineux tel que précédemment exposé, ménagé en face avant et/ou en face arrière du véhicule automobile.The presence of the invention also proposes a motor vehicle comprising at least one light device as previously explained, arranged on the front face and/or on the rear face of the motor vehicle.
- D’autres caractéristiques, détails et avantages de l’invention ressortiront plus clairement à la lecture de la description qui suit d’une part, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels :Other characteristics, details and advantages of the invention will emerge more clearly on reading the description which follows on the one hand, and several examples of embodiment given by way of indication and not limitation with reference to the appended schematic drawings on the other. part, on which:
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- Il faut tout d’abord noter que les figures exposent l’invention de manière détaillée pour sa mise en œuvre, mais que lesdites figures peuvent bien entendu servir à mieux définir l’invention, le cas échéant.It should first be noted that the figures expose the invention in detail for its implementation, but that said figures can of course be used to better define the invention, if necessary.
- Par convention, dans tout le présent document, le qualificatif « longitudinal » s’applique à la direction dans laquelle s’étend l’axe optique d’au moins l’un des modules lumineux, les qualificatifs « transversal » et « vertical » s’appliquant respectivement à des directions sensiblement perpendiculaires à la direction longitudinale et perpendiculaires entre elles.By convention, throughout this document, the qualifier "longitudinal" applies to the direction in which the optical axis of at least one of the light modules extends, the qualifiers "transverse" and "vertical" s 'applying respectively to directions substantially perpendicular to the longitudinal direction and mutually perpendicular.
- Pour rappel, l’invention porte notamment sur un module lumineux 1 de véhicule automobile, comportant au moins un ensemble d’émission lumineuse 2 et un système optique 4 disposé en travers des rayons lumineux émis pour projeter un faisceau lumineux, avec le système optique qui forme un élément de fermeture 6 du module lumineux 1 et l’ensemble d’émission lumineuse qui est monté sur un support rotatif 8 entraîné en rotation par un système d’entraînement 10 spécifique, indépendamment du système optique.As a reminder, the invention relates in particular to a light module 1 of a motor vehicle, comprising at least one light emission assembly 2 and an optical system 4 arranged across the light rays emitted to project a light beam, with the optical system which forms a closure element 6 of the light module 1 and the light emission assembly which is mounted on a rotary support 8 driven in rotation by a specific drive system 10, independently of the optical system.
- Un tel module lumineux 1 peut notamment être disposé en face avant 12 du véhicule, dans un projecteur avant configuré pour projeter sur la scène de route sur laquelle circule le véhicule un faisceau lumineux que celui-ci soit par exemple un faisceau de croisement ou un faisceau de route. Such a light module 1 can in particular be arranged on the front face 12 of the vehicle, in a front headlamp configured to project onto the road scene on which the vehicle is traveling a light beam, whether this is for example a dipped beam or a beam of road.
- Plus particulièrement, le module lumineux 1 selon l’invention peut être mis en œuvre dans un dispositif lumineux 14 de type projecteur sans glace, tel qu’illustré sur la
- Un projecteur sans glace est tel que, pour au moins un module lumineux logé dans le projecteur, aucun élément optique, même s’il est neutre optiquement, n’est disposé entre le système optique 4 de ce module lumineux 1 et la chaussée sur laquelle est projeté le faisceau créé par le module lumineux.A headlamp without glass is such that, for at least one light module housed in the headlamp, no optical element, even if it is optically neutral, is arranged between the optical system 4 of this light module 1 and the road on which the beam created by the light module is projected.
- Les figures 2 et 3 illustrent un exemple de réalisation de l’invention, avec un dispositif lumineux 14 comportant un boîtier 16 logeant une pluralité de modules lumineux 1 ici au nombre de deux.Figures 2 and 3 illustrate an embodiment of the invention, with a light device 14 comprising a housing 16 housing a plurality of light modules 1 here two in number.
- Le boîtier 16 comporte une pluralité de parois définissant un logement interne 18 ouvert sur une face d’extrémité tournée directement vers la chaussée, ladite face d’extrémité étant fermée par l’intermédiaire d’une vitre de fermeture 20. The box 16 comprises a plurality of walls defining an internal housing 18 open on an end face facing directly towards the roadway, said end face being closed by means of a closing window 20.
- Les parois définissant le boîtier peuvent être opaques afin d’absorber d’éventuels rayons lumineux externes au dispositif lumineux. Les modules lumineux 1 logés dans le boîtier sont ainsi protégés de l’environnement externe au véhicule, notamment des intempéries, de l’accumulation de salissures, ou des rayons du soleil par exemple, par l’ensemble formé par la vitre de fermeture 20 et par le boîtier 16.The walls defining the case may be opaque in order to absorb any light rays external to the light device. The light modules 1 housed in the housing are thus protected from the environment external to the vehicle, in particular from bad weather, the accumulation of dirt, or the rays of the sun for example, by the assembly formed by the closing window 20 and through box 16.
- Plus particulièrement, dans l’exemple illustré, le boîtier 16 comporte notamment une paroi frontale 22 partiellement ouverte, avec une première lumière 24 formée entre un bandeau central 26 et le bord supérieur de la paroi frontale qui est recouverte par la vitre de fermeture 20, et une deuxième lumière 28 formée entre le bandeau central 26 et le bord inférieur de la paroi frontale qui est recouverte par la vitre de fermeture 20.More particularly, in the example illustrated, the case 16 comprises in particular a partially open front wall 22, with a first opening 24 formed between a central strip 26 and the upper edge of the front wall which is covered by the closing window 20, and a second slot 28 formed between the central strip 26 and the lower edge of the front wall which is covered by the closing window 20.
- La vitre de fermeture 20 intègre les systèmes optiques 4 de chacun des modules lumineux 1 de sorte que comme évoqué précédemment, aucun élément optique n’est disposé entre ces systèmes optiques et la chaussée. Plus particulièrement, chaque système optique 4 forme à la fois un élément de fermeture 6 du module lumineux 1 auquel il appartient, et participe à former, avec le système optique de l’autre module lumineux, la vitre de fermeture 20 du dispositif lumineux 14 dans lequel sont logés les au moins deux modules lumineux 1.The closing window 20 integrates the optical systems 4 of each of the light modules 1 so that, as mentioned above, no optical element is arranged between these optical systems and the roadway. More specifically, each optical system 4 forms both a closing element 6 of the light module 1 to which it belongs, and participates in forming, with the optical system of the other light module, the closing window 20 of the light device 14 in which are housed the at least two light modules 1.
- La vitre de fermeture 20 peut, dans ce contexte d’intégration, être réalisée dans le même matériau que celui des systèmes optiques 4, ou bien être réalisée dans un deuxième matériau distinct de celui utilisé pour réaliser les systèmes optiques, dès lors que ce deuxième matériau n’a pas d’effet optique. La vitre de protection 20 et/ou les systèmes optiques 4 intégrés dans la vitre de protection peuvent être réalisés en polyméthacrylate de méthyle (PMMA) ou en polycarbonate (PC). Chaque système optique, intégré dans la vitre de fermeture, forme respectivement partie d’un des modules lumineux, de sorte que ces systèmes optiques vont être décrits plus en détails ci-après. The closing window 20 can, in this context of integration, be made of the same material as that of the optical systems 4, or else be made of a second material distinct from that used to make the optical systems, since this second material has no optical effect. The protective pane 20 and/or the optical systems 4 integrated in the protective pane can be made of polymethyl methacrylate (PMMA) or of polycarbonate (PC). Each optical system, integrated in the closing window, respectively forms part of one of the light modules, so that these optical systems will be described in more detail below.
- La vitre de fermeture 20 comporte par ailleurs des portions de fixation 30 destinées à être plaquées contre la face interne de la paroi frontale 22, autour des lumières 24, 26 formées dans cette paroi frontale. La vitre de fermeture 20 forme ainsi une barrière physique protectrice entre les modules lumineux et l’environnement externe au véhicule.Closing window 20 also comprises fixing portions 30 intended to be pressed against the internal face of front wall 22, around slots 24, 26 formed in this front wall. The closing window 20 thus forms a protective physical barrier between the light modules and the environment external to the vehicle.
- Les modules lumineux 1 sont logés à l’intérieur du boîtier 16 de telle sorte qu’ils puissent être réglables en rotation à l’intérieur du logement interne 18 défini par le boîtier 16 et la vitre de fermeture 20 du dispositif lumineux 14 et il convient de noter que par ailleurs, ce dispositif lumineux peut être réglable en position dans son ensemble, par rapport à la structure du véhicule notamment, via un dispositif de réglage plus classique, qui peut permettre le déplacement selon un mouvement de rotation multiaxial du boîtier du dispositif lumineux par exemple. Plus particulièrement, et tel que cela est illustré schématiquement sur les figures 2 et 3, le boîtier 16 est rattaché à une structure 32 du véhicule automobile par au moins un organe de fixation réglable 34 formant ce dispositif de réglage classique tel qu’évoqué. The light modules 1 are housed inside the casing 16 in such a way that they can be adjusted in rotation inside the internal casing 18 defined by the casing 16 and the closing window 20 of the light device 14 and it is appropriate to note that moreover, this luminous device can be adjustable in position as a whole, with respect to the structure of the vehicle in particular, via a more conventional adjustment device, which can allow movement according to a multiaxial rotational movement of the housing of the device light for example. More particularly, and as shown schematically in Figures 2 and 3, the housing 16 is attached to a structure 32 of the motor vehicle by at least one adjustable fixing member 34 forming this conventional adjustment device as mentioned.
- Le réglage en position des modules lumineux est ici particulier en ce que les ensembles d’émission lumineuse 2 de chaque module lumineux 1 peuvent être pivotés indépendamment de la position fixe du système optique 4 associé à chacun des ensembles d’émission lumineuse 2. Dans l’exemple illustré, les systèmes optiques 4 sont fixes par rapport à un référentiel véhicule, et ici par rapport au boîtier 16 du dispositif lumineux 14 en étant au contact et directement fixés sur la paroi frontale 22 du boîtier du dispositif lumineux. A l’inverse, les ensembles d’émission lumineuse 2 sont portés par le boîtier 16 du dispositif lumineux via un support rotatif 8 rendant possible le pivotement des ensembles d’émission lumineuse 2, et notamment des sources lumineuses, par rapport audit référentiel véhicule et donc par rapport aux systèmes optiques 4.The adjustment in position of the light modules is particular here in that the light emission assemblies 2 of each light module 1 can be pivoted independently of the fixed position of the optical system 4 associated with each of the light emission assemblies 2. In the example shown, the optical systems 4 are fixed with respect to a vehicle frame of reference, and here with respect to the housing 16 of the luminous device 14, being in contact with and directly fixed to the front wall 22 of the housing of the luminous device. Conversely, the light emission assemblies 2 are carried by the housing 16 of the luminous device via a rotary support 8 making it possible to pivot the light emission assemblies 2, and in particular the light sources, with respect to said vehicle reference system and so compared to optical systems 4.
- Tel que cela sera évoqué ci-après, le support rotatif 8 participe ainsi à former un système de réglage de la position de la source lumineuse associée, et des moyens d’arrêt en position associés à ce support rotatif peuvent être prévus pour permettre de figer la position du support rotatif 8 lorsque le réglage de la position de l’ensemble d’émission lumineuse est terminé. Le support rotatif 8 est notamment configuré pour comporter des organes de pivotement participant à former l’axe de rotation et pour être lié à un système d’entraînement 10 qui tend à pousser sur le support pour le forcer à pivoter autour de l’axe de rotation.As will be mentioned below, the rotary support 8 thus participates in forming a system for adjusting the position of the associated light source, and stop means in position associated with this rotary support can be provided to make it possible to freeze the position of the rotary support 8 when the adjustment of the position of the light emission assembly is completed. The rotary support 8 is in particular configured to include pivot members participating in forming the axis of rotation and to be linked to a drive system 10 which tends to push on the support to force it to pivot around the axis of rotation. spin.
- Dans l’exemple illustré, chaque module lumineux 1 comprend d’une part un ensemble d’émission lumineuse 2, avec une source lumineuse 36 apte à émettre des rayons lumineux, et un collecteur 38, configuré pour collimater ou dévier les rayons lumineux émis par la source lumineuse 36 suivant un axe optique 100 du module lumineux 1, et d’autre part un système optique 4, agencé sur le trajet des rayons lumineux et configuré pour former avec ces rayons un faisceau lumineux réglementaire. In the example illustrated, each light module 1 comprises on the one hand a light emission assembly 2, with a light source 36 capable of emitting light rays, and a collector 38, configured to collimate or deflect the light rays emitted by the light source 36 along an optical axis 100 of the light module 1, and on the other hand an optical system 4, arranged on the path of the light rays and configured to form with these rays a regulatory light beam.
- Pour chaque module lumineux 1, c’est l’ensemble d’émission lumineuse 2, et donc la source lumineuse 36 et le cas échéant le collecteur 38, qui est rendu solidaire du support rotatif 8.For each light module 1, it is the light emission assembly 2, and therefore the light source 36 and, where appropriate, the collector 38, which is secured to the rotary support 8.
- Chaque système optique 4 fait partie spécifiquement d’un module lumineux 1, en étant spécifiquement associé à un ensemble d’émission lumineuse 2, et il fait en outre partie tel qu’évoqué précédemment de la vitre de fermeture 20 définissant avec le boîtier 16 un logement commun aux deux modules.Each optical system 4 is specifically part of a light module 1, being specifically associated with a light emission assembly 2, and it is also part, as mentioned above, of the closing window 20 defining with the housing 16 a housing common to both modules.
- Dans l’exemple illustré, le dispositif lumineux 14 est configuré pour recevoir dans son boîtier deux modules lumineux 1, et plus particulièrement un premier module lumineux 5 et un deuxième module lumineux 7. Le premier module lumineux 5 est ici configuré de manière à former un premier faisceau lumineux correspondant à un éclairage réglementaire de type feu de croisement et le deuxième module lumineux 7 est ici configuré pour former un deuxième faisceau lumineux complémentaire du premier faisceau lumineux pour que la combinaison de ces deux faisceaux puisse former un faisceau réglementaire de type feu de route.In the example illustrated, the light device 14 is configured to receive in its housing two light modules 1, and more particularly a first light module 5 and a second light module 7. The first light module 5 is here configured so as to form a first light beam corresponding to regulatory lighting of the dipped beam type and the second light module 7 is here configured to form a second light beam complementary to the first light beam so that the combination of these two beams can form a regulatory beam of the dipped beam type road.
- Le premier module lumineux 5 va maintenant être plus particulièrement décrit, en référence aux figures 2 à 4, étant entendu que d’autres formes de modules pourraient être mises en œuvre dès lors que, comme évoqué précédemment, au moins l’ensemble d’émission lumineuse de ce premier module lumineux est configuré pour que sa position puisse être réglée par une rotation indépendamment du système optique de ce module lumineux.The first light module 5 will now be more particularly described, with reference to FIGS. 2 to 4, it being understood that other forms of modules could be implemented when, as mentioned above, at least the emission light of this first light module is configured so that its position can be adjusted by rotation independently of the optical system of this light module.
- L’ensemble d’émission lumineuse 2 comporte ici deux sources lumineuses 36a, 36b du type à semi-conducteur, ou plus particulièrement deux groupes de sources lumineuses, disposés sur une carte de circuits imprimés 40 solidaire du support rotatif 8. The light emission assembly 2 here comprises two light sources 36a, 36b of the semiconductor type, or more particularly two groups of light sources, arranged on a printed circuit board 40 fixed to the rotary support 8.
- Ces deux groupes de sources lumineuses 36a, 36b sont décalés l’un par rapport à l’autre latéralement, c’est-à-dire selon une direction transversale perpendiculaire à l’axe optique 500 du premier module lumineux 5 et comprise dans le plan principal d’allongement de la carte de circuits imprimés 40, de manière à être disposées respectivement en regard d’un des deux systèmes optiques 4a, 4b que comporte le premier module lumineux 5, ces deux systèmes optiques 4a, 4b étant également décalés latéralement l’un par rapport à l’autre. These two groups of light sources 36a, 36b are offset from each other laterally, that is to say along a transverse direction perpendicular to the optical axis 500 of the first light module 5 and included in the plane main elongation of the printed circuit board 40, so as to be arranged respectively opposite one of the two optical systems 4a, 4b that comprises the first light module 5, these two optical systems 4a, 4b also being offset laterally l one relative to the other.
- Le premier module lumineux 5 forme ici un système à double focal, du fait que les deux systèmes optiques 4a, 4b sont alignés le long d’une direction transversale perpendiculaire à l’axe optique 500 tandis que les deux groupes de sources lumineuses 36a, 36b sont décalées longitudinalement le long de l’axe optique 500 en plus de leur décalage transversal précédemment évoqué. L’alignement des systèmes optiques 4a, 4b permet de générer un élément de fermeture 6 du premier module lumineux qui s’étend sensiblement d’un seul tenant, principalement perpendiculaire à l’axe optique 500, et le décalage longitudinal des groupes de sources lumineuses 36a, 36b implique une position d’un premier groupe à une première distance focale F1 du système optique associé 4a et une position d’un deuxième groupe à une deuxième distance focale F2 du système optique associé 4b. The first light module 5 here forms a double focal system, because the two optical systems 4a, 4b are aligned along a transverse direction perpendicular to the optical axis 500 while the two groups of light sources 36a, 36b are offset longitudinally along the optical axis 500 in addition to their previously mentioned transverse offset. The alignment of the optical systems 4a, 4b makes it possible to generate a closure element 6 of the first light module which extends substantially in one piece, mainly perpendicular to the optical axis 500, and the longitudinal offset of the groups of light sources 36a, 36b implies a position of a first group at a first focal distance F1 of the associated optical system 4a and a position of a second group at a second focal distance F2 of the associated optical system 4b.
- Cet agencement permet de générer un faisceau de croisement avec deux portions du faisceau qui sont distinctes par leur concentration de rayons lumineux, de manière par exemple à augmenter la concentration de rayons lumineux au centre et au niveau de la coupure du faisceau lumineux projeté par le premier module lumineux.This arrangement makes it possible to generate a dipped beam with two portions of the beam which are distinct by their concentration of light rays, so as for example to increase the concentration of light rays at the center and at the level of the cut-off of the light beam projected by the first light module.
- La fixation de ces deux groupes de sources lumineuses 36a, 36b sur le même support rotatif 8 permet d’entraîner l’ensemble des sources lumineuses 36 en rotation autour d’un même premier axe de rotation 101, indépendamment de l’élément de fermeture 6.The fixing of these two groups of light sources 36a, 36b on the same rotary support 8 makes it possible to drive all the light sources 36 in rotation around the same first axis of rotation 101, independently of the closure element 6 .
- Chaque source lumineuse 36 est configurée pour émettre des rayons lumineux dans un demi-espace délimité par le plan principal d’allongement de la carte de circuits imprimés, notamment en direction du collecteur 38 associé à chaque source lumineuse.Each light source 36 is configured to emit light rays in a half-space delimited by the main elongation plane of the printed circuit board, in particular in the direction of the collector 38 associated with each light source.
- Chaque collecteur 38 présente une surface interne réfléchissante configurée pour dévier les rayons lumineux émis par la source lumineuse 36 du module lumineux correspondant en direction du système optique 4 suivant un axe optique propre à chaque module lumineux. De la sorte, l’image projetée sur la scène de route par le module lumineux consiste en une imagerie directe du collecteur 38.Each collector 38 has a reflective internal surface configured to deflect the light rays emitted by the light source 36 of the corresponding light module in the direction of the optical system 4 along an optical axis specific to each light module. In this way, the image projected onto the road scene by the light module consists of direct imaging of the collector 38.
- Le collecteur 38 est avantageusement réalisé dans des matériaux présentant une bonne tenue à la chaleur, par exemple du verre ou des polymères synthétiques comme du polycarbonate (PC) ou du polyétherimide (PEI).Collector 38 is advantageously made of materials with good heat resistance, for example glass or synthetic polymers such as polycarbonate (PC) or polyetherimide (PEI).
- Dans ce premier module lumineux 5, chaque collecteur 38 présente une forme sensiblement elliptique et chaque source lumineuse 36 est particulièrement disposée au niveau d’un premier foyer du collecteur qui lui associé de sorte que les rayons déviés soient dirigés en direction d’un deuxième foyer du collecteur elliptique agencé sur l’axe optique 100. Le système optique 4 est disposé sur l’axe optique 100 entre les deux foyers du collecteur elliptique, sur la trajectoire des rayons lumineux déviés, le système optique 4 s’étendant selon une direction sensiblement perpendiculaire audit axe optique. In this first light module 5, each collector 38 has a substantially elliptical shape and each light source 36 is particularly arranged at a first focal point of the collector associated with it so that the deflected rays are directed towards a second focal point. of the elliptical collector arranged on the optical axis 100. The optical system 4 is arranged on the optical axis 100 between the two focal points of the elliptical collector, on the path of the deflected light rays, the optical system 4 extending in a direction substantially perpendicular to said optical axis.
- Le système optique 4 présente ici la forme d’une lentille convergente dont le foyer est disposé ici au voisinage du collecteur 38. Le système optique 4 de chaque module lumineux peut notamment consister en une lentille de projection mince, par exemple d’épaisseur de l’ordre de 7mm. Il convient de noter qu’une telle configuration de lentille de projection n’est donnée ici qu’à titre d’exemple et qu’il pourrait être prévu, sans sortir du contexte de l’invention, une lentille de projection présentant une épaisseur supérieure et réalisée en plusieurs couches.The optical system 4 here has the form of a converging lens, the focal point of which is arranged here in the vicinity of the collector 38. The optical system 4 of each light module can in particular consist of a thin projection lens, for example with a thickness of l order of 7mm. It should be noted that such a projection lens configuration is given here only by way of example and that it could be provided, without departing from the context of the invention, a projection lens having a greater thickness and made in several layers.
- Tel que cela est visible sur les figures 2 et 3, le premier module lumineux 5 est pivotable autour d’un premier axe de rotation 101 perpendiculaire à l’axe optique 500 de telle sorte que le système optique 4 de ce premier module lumineux 5 reste fixe. Les figures 2 et 3 illustrent notamment le premier module lumineux 5 au sein du dispositif lumineux 14 dans une première position (
- Le support rotatif 8 du premier module lumineux 5 comporte des moyens de guidage en rotation autour de ce premier axe de rotation, dont un exemple de réalisation va être décrit ci-après en référence à la
- Les moyens de guidage en rotation sont configurés pour que le premier axe de rotation 101 soit formé à distance de l’ensemble d’émission lumineuse 2 du premier module lumineux 5.The rotation guide means are configured so that the first axis of rotation 101 is formed at a distance from the light emission assembly 2 of the first light module 5.
- Dans un exemple de réalisation illustré sur la
- Par ailleurs, sans que cela soit représenté, il pourrait être envisagé un exemple de réalisation différent, dans lequel les moyens de guidage en rotation sont formés par un ergot formant saillie latérale du support rotatif, au niveau de la carte de circuits imprimés, apte à translater à l’intérieur d’une rainure courbe, dont le centre de courbure est positionné sur l’axe de rotation de l’ensemble d’émission lumineuse.Furthermore, without this being shown, a different example of embodiment could be envisaged, in which the means for guiding in rotation are formed by a lug forming a lateral projection of the rotary support, at the level of the printed circuit board, capable of translate inside a curved groove, the center of curvature of which is positioned on the axis of rotation of the light emission assembly.
- Dans le contexte précédemment évoqué d’un module lumineux bifocal, c’est-à-dire présentant deux plans focaux décalés l’un par rapport à l’autre, la position du premier axe de rotation 101 est déterminée par l’intermédiaire d’une équation prenant en compte uniquement les caractéristiques optiques du premier module lumineux, indépendamment des caractéristiques mécaniques du système d’entraînement 10. Ainsi, on peut trouver, par un calcul trigonométrique notamment, la position d’un premier axe de rotation 101 permettant d’assurer, lors de la rotation de l’ensemble d’émission lumineuse 2, que le déplacement de l’un des groupes de sources lumineuses 4b est plus important que le déplacement de l’autre groupe de sources lumineuses 4a et que ces déplacements différents permettent un réglage homogène des deux portions du faisceau de route formé par chaque source lumineuse. In the previously mentioned context of a bifocal light module, that is to say having two focal planes offset from each other, the position of the first axis of rotation 101 is determined by means of an equation taking into account only the optical characteristics of the first light module, independently of the mechanical characteristics of the drive system 10. Thus, it is possible to find, by a trigonometric calculation in particular, the position of a first axis of rotation 101 making it possible to ensure, during the rotation of the light emitting assembly 2, that the displacement of one of the groups of light sources 4b is greater than the displacement of the other group of light sources 4a and that these different displacements allow uniform adjustment of the two portions of the driving beam formed by each light source.
- En se référant notamment à la
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- D étant la distance le long de l’axe optique 500 entre le premier axe de rotation 101 et la source lumineuse 36 la plus éloignée des systèmes optiques 4a, 4b du module lumineux. L’intégration dans cette équation de données structurelles du système optique, comme les distances F1, F2 du plan focal objet pour chacun des groupes de sources lumineuses 36a, 36b et son système optique 4a, 4b associé, et de données de réglage souhaitées comme le déplacement vertical H1, H2 de chaque groupe de sources lumineuses, positif ou négatif par rapport à l’axe optique, permet de calculer la distance D et donc le bon positionnement du premier axe de rotation 101. Par bon positionnement de l’axe de rotation, on comprend qu’il s’agit de calculer une position du premier axe de rotation 101 autour duquel va tourner le support rotatif 8 et qui va permettre un pivotement de l’ensemble d’émission lumineuse 2 du premier module lumineux 5, avec les deux groupes de sources lumineuses pivotant simultanément, gardant une homogénéité du faisceau formé des deux portions de faisceaux émis par chaque groupe de source lumineuse et son système optique associé.D being the distance along the optical axis 500 between the first axis of rotation 101 and the light source 36 farthest from the optical systems 4a, 4b of the light module. The integration into this equation of structural data of the optical system, such as the distances F1, F2 from the object focal plane for each of the groups of light sources 36a, 36b and its associated optical system 4a, 4b, and of desired adjustment data such as the vertical displacement H1, H2 of each group of light sources, positive or negative with respect to the optical axis, makes it possible to calculate the distance D and therefore the correct positioning of the first axis of rotation 101. By correct positioning of the axis of rotation , it is understood that it is a question of calculating a position of the first axis of rotation 101 around which the rotary support 8 will rotate and which will allow a pivoting of the light emission assembly 2 of the first light module 5, with the two groups of light sources pivoting simultaneously, keeping the homogeneity of the beam formed by the two portions of beams emitted by each group of light sources and its associated optical system.
- A titre d’exemple, pour un module lumineux dans lequel la première distance focale F1 est de l’ordre de 65mm et dans lequel la deuxième distance focale F2 est de l’ordre de 95mm, on peut déterminer via cette équation la position de l’axe de rotation et l’angle de rotation à donner au support rotatif du premier module lumineux pour que les sources lumineuses soient déplacées en rotation avec un effet sur le faisceau qui soit similaire à un déplacement en translation des sources lumineuses. Pour des hauteurs de réglage théorique H1, H2 de chacune des sources lumineuses, avec H1 la hauteur associée à la source la plus proche du système optique du module lumineux, on obtient une distance D de l’ordre de 112mm et on en déduit trigonométriquement une valeur de l’angle de rotation α de l’ordre de 2,1°.By way of example, for a light module in which the first focal distance F1 is of the order of 65mm and in which the second focal distance F2 is of the order of 95mm, it is possible to determine via this equation the position of the axis of rotation and the angle of rotation to be given to the rotary support of the first light module so that the light sources are moved in rotation with an effect on the beam which is similar to a translational movement of the light sources. For theoretical adjustment heights H1, H2 of each of the light sources, with H1 the height associated with the source closest to the optical system of the light module, we obtain a distance D of the order of 112mm and we deduce trigonometrically a value of the angle of rotation α of the order of 2.1°.
- Le deuxième module lumineux 7 va maintenant être plus particulièrement décrit, en référence aux figures 3 à 5, étant entendu que d’autres formes de modules pourraient être mises en œuvre dès lors que, comme évoqué précédemment, au moins l’ensemble d’émission lumineuse de ce deuxième module lumineux est configuré pour que sa position puisse être réglée par une rotation indépendamment du système optique de ce module lumineux.The second light module 7 will now be more particularly described, with reference to FIGS. 3 to 5, it being understood that other forms of modules could be implemented when, as mentioned above, at least the emission assembly light of this second light module is configured so that its position can be adjusted by rotation independently of the optical system of this light module.
- L’ensemble d’émission lumineuse 2 du deuxième module lumineux 7 peut comporter une pluralité de sources lumineuses 36 agencées en une matrice dans laquelle chaque source lumineuse est apte à être alimentée indépendamment des autres sources lumineuses. Dans l’exemple illustré, les sources lumineuses sont agencées en deux rangées 52 disposées l’une au-dessus de l’autre. Tel que cela est visible sur la
- Chaque source lumineuse 36 est disposée sur une carte de circuits imprimés 40, ici sensiblement perpendiculaire à l’axe optique 700 du deuxième module lumineux 7 et cette carte de circuits imprimés participe à former le support rotatif 8 qui va entraîner en rotation l’ensemble d’émission lumineuse 2. Le cas échéant, comme cela peut être également le cas pour la carte de circuit imprimés du premier module lumineux, la carte de circuits imprimés et le support rotatif peuvent être solidaires d’un corps du module lumineux, formant par exemple un radiateur configuré pour dissiper la chaleur générée par le fonctionnement de la matrice de sources lumineuses. Each light source 36 is arranged on a printed circuit board 40, here substantially perpendicular to the optical axis 700 of the second light module 7 and this printed circuit board participates in forming the rotary support 8 which will drive the assembly in rotation. light emission 2. If necessary, as may also be the case for the printed circuit board of the first light module, the printed circuit board and the rotary support may be integral with a body of the light module, forming for example a heatsink configured to dissipate heat generated by the operation of the light source array.
- Chaque source lumineuse 36 est ici configurée pour émettre des rayons lumineux dans un demi-espace délimité par le plan principal d’allongement de la carte de circuits imprimés, notamment en direction du collecteur 38.Each light source 36 is here configured to emit light rays in a half-space delimited by the main elongation plane of the printed circuit board, in particular in the direction of the collector 38.
- Le collecteur 38 présente ici une forme de collimateur, avec une face d’entrée par laquelle pénètre l’ensemble des rayons émis par les sources lumineuses et une face de sortie 54 qui forme une image obtenue par l’addition des différents rayons émis. Cette image pouvant notamment comporter des bandes sombres dues à l’extinction de telles ou telles sources lumineuses en regard de la face d’entrée du collecteur. La face de sortie 54 du collecteur 38 est agencée sur le plan focal Pf, ou au voisinage du plan focal, du système optique associé à ce deuxième module lumineux. Le collecteur 38 est avantageusement réalisé dans des matériaux présentant une bonne tenue à la chaleur, par exemple du verre ou des polymères synthétiques comme du polycarbonate (PC) ou du polyétherimide (PEI).The collector 38 here has the form of a collimator, with an input face through which all the rays emitted by the light sources penetrate and an output face 54 which forms an image obtained by the addition of the various rays emitted. This image may in particular include dark bands due to the extinction of such and such light sources opposite the input face of the collector. The output face 54 of the collector 38 is arranged on the focal plane Pf, or in the vicinity of the focal plane, of the optical system associated with this second light module. Collector 38 is advantageously made of materials with good heat resistance, for example glass or synthetic polymers such as polycarbonate (PC) or polyetherimide (PEI).
- Conformément à ce qui a pu être décrit précédemment, le système optique 4 du deuxième module lumineux 7 comporte une lentille de projection apte à être intégrée dans la vitre de fermeture 20 commune aux deux modules lumineux 5, 7. Dans l’exemple illustré, il convient de noter qu’une lentille additionnelle 56 est positionnée en amont de la lentille par rapport au sens de circulation des rayons lumineux.In accordance with what has been described previously, the optical system 4 of the second light module 7 comprises a projection lens capable of being integrated into the closing window 20 common to the two light modules 5, 7. In the example illustrated, it should be noted that an additional lens 56 is positioned upstream of the lens with respect to the direction of circulation of the light rays.
- Tel que cela est visible sur les figures 2 et 3, et de façon similaire à ce qui a été décrit pour le premier module lumineux, le deuxième module lumineux 7 est pivotable autour d’un deuxième axe de rotation 102 perpendiculaire à l’axe optique de telle sorte que le système optique 4 de ce deuxième module lumineux 7 reste fixe. Plus particulièrement, dans ce deuxième module lumineux 7, l’ensemble d’émission lumineuse 2 et le support rotatif 8 sur lequel l’ensemble d’émission lumineuse est fixé sont mobiles en rotation autour de ce deuxième axe de rotation 102. Et il est notable que le deuxième axe de rotation 102 est distinct, et plus particulièrement parallèle et à distance, du premier axe de rotation 101.As seen in Figures 2 and 3, and similarly to what has been described for the first light module, the second light module 7 is pivotable about a second axis of rotation 102 perpendicular to the optical axis so that the optical system 4 of this second light module 7 remains fixed. More particularly, in this second light module 7, the light emission assembly 2 and the rotary support 8 on which the light emission assembly is fixed are rotatable around this second axis of rotation 102. And it is note that the second axis of rotation 102 is distinct, and more particularly parallel and at a distance, from the first axis of rotation 101.
- Le support rotatif 8 du deuxième module lumineux 7 comporte des moyens de guidage en rotation autour de ce deuxième axe de rotation, dont un exemple de réalisation va être décrit ci-après en référence à la
- Les moyens de guidage en rotation sont configurés pour que le deuxième axe de rotation 102 soit formé à distance de l’ensemble d’émission lumineuse 2 du deuxième module lumineux 7.The rotation guide means are configured so that the second axis of rotation 102 is formed at a distance from the light emission assembly 2 of the second light module 7.
- Dans un exemple de réalisation illustré sur la
- Dans ce contexte d’un module lumineux avec un système optique à simple focal et un ensemble d’émission lumineuse disposé sur cet unique plan focal, ici via le collimateur disposé en regard de la matrice de sources lumineuses, la position du deuxième axe de rotation 102 est déterminée par l’intermédiaire d’une base de données obtenue de façon empirique et prenant en compte les caractéristiques mécaniques du système d’entraînement 10.In this context of a light module with a single focal optical system and a light emission assembly arranged on this single focal plane, here via the collimator arranged facing the matrix of light sources, the position of the second axis of rotation 102 is determined via a database obtained empirically and taking into account the mechanical characteristics of the drive system 10.
- Ces caractéristiques mécaniques peuvent notamment être l’une ou plusieurs des valeurs suivantes, à savoir la précision angulaire du moteur pas à pas 44, la distance de course maximale de l’arbre de sortie du moteur pas à pas 44 et la longueur du bras de levier 46, et la distance du deuxième axe de rotation 102 par rapport au plan focal est alors définie en fonction de ces valeurs et de la hauteur de déplacement théorique souhaitée pour procéder au réglage d’assiette de ce module lumineux. These mechanical characteristics may in particular be one or more of the following values, namely the angular precision of the stepper motor 44, the maximum travel distance of the output shaft of the stepper motor 44 and the length of the lever 46, and the distance of the second axis of rotation 102 with respect to the focal plane is then defined as a function of these values and of the desired theoretical height of displacement in order to adjust the attitude of this light module.
- Comme précédemment, une fois déterminée la distance à laquelle s’étend l’axe de rotation du plan focal du deuxième module lumineux, il est possible trigonométriquement d’en déduire l’angle de rotation à donner au deuxième module lumineux 7 pour que le réglage de l’émission des rayons soit similaire à un déplacement en translation ou rotation du module lumineux dans son ensemble. Le deuxième angle de rotation β ainsi associé au mouvement en rotation de l’ensemble d’émission lumineuse du deuxième module lumineux 7 peut présenter une valeur égale ou différente de celle du premier angle de rotation α associé au mouvement en rotation de l’ensemble d’émission lumineuse du premier module lumineux 5, étant entendu que l’on procède à un réglage indépendant de chaque ensemble d’émission lumineuse des modules lumineux.As previously, once the distance to which the axis of rotation of the focal plane of the second light module extends, it is possible trigonometrically to deduce therefrom the angle of rotation to be given to the second light module 7 so that the adjustment of the emission of the rays is similar to a movement in translation or rotation of the light module as a whole. The second angle of rotation β thus associated with the rotational movement of the light emission assembly of the second light module 7 may have a value equal to or different from that of the first angle of rotation α associated with the rotational movement of the assembly d light emission of the first light module 5, it being understood that an independent adjustment is carried out for each set of light emission of the light modules.
- Pour chacun des modules lumineux, un procédé de montage et de réglage en position est équivalent, avec la mise en rotation de l’ensemble d’émission lumineuse de manière indépendante du système optique participant à former le module lumineux avec l’ensemble d’émission lumineuse, la rotation de l’ensemble d’émission lumineuse se faisant autour d’un axe de rotation formé à distance de l’ensemble d’émission lumineuse.For each of the light modules, a mounting and position adjustment method is equivalent, with the rotation of the light emission assembly independently of the optical system participating in forming the light module with the emission assembly light, the rotation of the light emission assembly taking place around an axis of rotation formed at a distance from the light emission assembly.
- Le mouvement de l’ensemble d’émission lumineuse doit être compris dans chacun de ces cas comme un mouvement spécifique de la source lumineuse, et du collecteur associé le cas échéant, par rapport à un référentiel fixe qui comprend notamment le système optique. De la sorte, lors du pivotement de la source lumineuse, le système optique reste fixe. Il convient dès lors de trouver une position avantageuse de l’axe de rotation de sorte que le pivotement de la source lumineuse permette de conserver le passage de la majorité des rayons lumineux émis à travers le système optique.The movement of the light emission assembly must be understood in each of these cases as a specific movement of the light source, and of the associated collector if applicable, relative to a fixed frame of reference which notably includes the optical system. In this way, when pivoting the light source, the optical system remains fixed. It is therefore necessary to find an advantageous position of the axis of rotation so that the pivoting of the light source makes it possible to preserve the passage of the majority of the light rays emitted through the optical system.
- Les moyens d’arrêt en position évoqués précédemment permettent de figer la position de l’ensemble d’émission lumineuse après rotation autour de l’axe de rotation déterminé. Ces moyens d’arrêt en position peuvent consister en des moyens mécaniques, et notamment comporter un trou taraudé, réalisé dans un carter du module lumineux ou dans le boîtier du dispositif lumineux, un alésage en arc de cercle réalisé dans le support rotatif, et une vis de serrage qui peut être laissée à demeure dans le trou taraudé en étant plus ou moins serrée ou bien être rapportée au moment où la position souhaitée est obtenue. Les moyens d’arrêt en position peuvent également consister en des moyens électroniques pour sécuriser la position d’arrêt du moteur prévu pour entraîner en rotation le module lumineux. Dans le cas de moyens mécaniques, des organes d’étanchéité peuvent avantageusement être prévus sur une face du carter du module lumineux et/ou sur une face du boîtier du dispositif lumineux.The means of stopping in position mentioned above make it possible to freeze the position of the light emission assembly after rotation around the determined axis of rotation. These means for stopping in position may consist of mechanical means, and in particular comprise a tapped hole, made in a casing of the light module or in the housing of the light device, a circular arc bore made in the rotary support, and a tightening screw which can be left permanently in the tapped hole by being more or less tight or can be added when the desired position is obtained. The stop-in-position means can also consist of electronic means for securing the stop position of the motor provided for driving the light module in rotation. In the case of mechanical means, sealing members can advantageously be provided on one side of the housing of the light module and/or on one side of the housing of the light device.
- On comprend à la lecture de ce qui précède que la présente invention propose un dispositif lumineux d’un véhicule automobile simplifié et compacté, comprenant au moins deux modules lumineux logés dans un boîtier du dispositif dont la vitre de fermeture est commune avec les systèmes optiques des modules, et qui permet un réglage de la position d’au moins l’un des modules lumineux indépendamment d’au moins l’autre module lumineux, avec une rotation de la source lumineuse correspondant indépendamment des systèmes optiques.It is understood on reading the foregoing that the present invention proposes a light device for a simplified and compact motor vehicle, comprising at least two light modules housed in a housing of the device whose closing window is common with the optical systems of the modules, and which allows adjustment of the position of at least one of the light modules independently of at least the other light module, with a corresponding rotation of the light source independently of the optical systems.
- L’invention ne saurait toutefois se limiter aux moyens et configurations décrits et illustrés ici, et elle s’étend également à tout moyen ou configuration équivalents et à toute combinaison technique opérant de tels moyens. En particulier, le nombre de modules lumineux pourra être modifié sans nuire à l’invention, dans la mesure où le dispositif lumineux, in fine, remplit les mêmes fonctionnalités que celles décrites dans ce document.
The invention cannot however be limited to the means and configurations described and illustrated here, and it also extends to any equivalent means or configuration and to any technical combination operating such means. In particular, the number of light modules may be modified without harming the invention, insofar as the light device, ultimately, fulfills the same functions as those described in this document.
Claims (10)
- Module lumineux (1, 5, 7) de véhicule automobile, comportant au moins un ensemble d’émission lumineuse (2) apte à émettre des rayons lumineux et un système optique (4) disposé, sur un axe optique (100, 500, 700) spécifique du module lumineux, en travers des rayons lumineux et configuré pour projeter un faisceau lumineux, l’au moins un ensemble d’émission lumineuse (2) étant disposé au voisinage d’un plan focal objet du système optique (4), caractérisé en ce que le système optique (4) forme un élément de fermeture (6) du module lumineux et en ce que l’ensemble d’émission lumineuse (2) est monté sur un support rotatif (8) entraîné en rotation par un système d’entraînement (10) spécifique, indépendamment du système optique (4). Motor vehicle light module (1, 5, 7), comprising at least one light emission assembly (2) capable of emitting light rays and an optical system (4) arranged on an optical axis (100, 500, 700 ) specific to the light module, across the light rays and configured to project a light beam, the at least one light emission assembly (2) being arranged in the vicinity of an object focal plane of the optical system (4), characterized in that the optical system (4) forms a closing element (6) of the light module and in that the light emission assembly (2) is mounted on a rotary support (8) driven in rotation by a system of specific drive (10), independent of the optical system (4).
- Module lumineux (1, 5, 7) selon la revendication précédente, caractérisé en ce que le support rotatif (8) est rendu mobile en rotation autour d’un axe de rotation (101, 102) qui est perpendiculaire à l’axe optique (100, 500, 700) et à distance de l’ensemble d’émission lumineuse (2).Light module (1, 5, 7) according to the preceding claim, characterized in that the rotary support (8) is made rotatable around an axis of rotation (101, 102) which is perpendicular to the optical axis ( 100, 500, 700) and remote from the light emission assembly (2).
- Module lumineux (1, 5, 7) selon la revendication précédente, caractérisé en ce que la position de l’axe de rotation du support rotatif (8) est au voisinage du système optique (4).Light module (1, 5, 7) according to the preceding claim, characterized in that the position of the axis of rotation of the rotary support (8) is in the vicinity of the optical system (4).
- Module lumineux (1, 5) selon l’une des revendications 1 à 3, caractérisé en ce que l’ensemble d’émission lumineuse (2) comporte deux sources lumineuses (36a, 36b) décalées latéralement l’une par rapport à l’autre de manière à être disposées respectivement en regard d’un premier système optique (4a) associé à une première des deux sources lumineuses et d’un deuxième système optique (4b) associé à une deuxième des deux sources lumineuses, l’élément de fermeture (6) étant formé par la juxtaposition latérale des premier et deuxième systèmes optiques, les deux sources lumineuses étant disposées sur des plans focaux objets différents par rapport à leur système optique associé, le module lumineux (5) étant caractérisé en ce que les deux sources lumineuses (36a, 36b) sont entraînées en rotation autour d’un même axe formant ledit axe de rotation, indépendamment de l’élément de fermeture (6).Light module (1, 5) according to one of Claims 1 to 3, characterized in that the light emission assembly (2) comprises two light sources (36a, 36b) laterally offset from one another another so as to be arranged respectively facing a first optical system (4a) associated with a first of the two light sources and a second optical system (4b) associated with a second of the two light sources, the closing element (6) being formed by the lateral juxtaposition of the first and second optical systems, the two light sources being arranged on different object focal planes with respect to their associated optical system, the light module (5) being characterized in that the two sources lights (36a, 36b) are driven in rotation around a same axis forming said axis of rotation, independently of the closure element (6).
- Module lumineux (1, 7) selon l’une des revendications 1 à 3, caractérisé en ce que l’ensemble d’émission lumineuse (2) comporte une pluralité de sources lumineuses (36) agencées en une matrice dans laquelle chaque source lumineuse est apte à être alimentée indépendamment des autres sources lumineuses. Light module (1, 7) according to one of Claims 1 to 3, characterized in that the light emission assembly (2) comprises a plurality of light sources (36) arranged in a matrix in which each light source is able to be powered independently of other light sources.
- Dispositif lumineux (14) de véhicule automobile, comprenant un boîtier (16) et au moins deux modules lumineux (1, 5, 7) conformes à l’une des revendications précédentes et logés dans ledit boîtier. Motor vehicle light device (14), comprising a casing (16) and at least two light modules (1, 5, 7) in accordance with one of the preceding claims and housed in said casing.
- Dispositif lumineux (14) de véhicule automobile selon la revendication précédente, dans lequel l’élément de fermeture (6) de chaque module lumineux (1, 5, 7) participe à fermer le boîtier (16), l’élément de fermeture d’un des modules lumineux étant réalisé d’un seul tenant avec l’élément de fermeture de l’autre module lumineux.Motor vehicle light device (14) according to the preceding claim, in which the closure element (6) of each light module (1, 5, 7) contributes to closing the housing (16), the closure element of one of the light modules being made in one piece with the closing element of the other light module.
- Dispositif lumineux (14) de véhicule automobile selon la revendication 6 ou 7, dans lequel un premier module lumineux (5) est conforme à la revendication 4 et un deuxième module lumineux (7) est conforme à la revendication 5.A motor vehicle lighting device (14) according to claim 6 or 7, wherein a first lighting module (5) is according to claim 4 and a second lighting module (7) is according to claim 5.
- Dispositif lumineux (14) selon l’une des revendications 6 à 8, dans lequel chaque module lumineux (1, 5, 7) présente un axe de rotation de l’au moins une source lumineuse de ce module qui est disposé à une distance de l’élément de fermeture (6), et caractérisé en ce que les axes de rotation (101, 102) sont disposés à des distances différentes de l’élément de fermeture (6) d’un module lumineux à l’autre. Luminous device (14) according to one of Claims 6 to 8, in which each luminous module (1, 5, 7) has an axis of rotation of the at least one luminous source of this module which is disposed at a distance of the closing element (6), and characterized in that the axes of rotation (101, 102) are arranged at different distances from the closing element (6) from one light module to another.
- Véhicule automobile comprenant au moins un dispositif lumineux (14) selon l’une quelconque des revendications 6 à 9 et ménagé en face avant et/ou en face arrière du véhicule automobile.Motor vehicle comprising at least one light device (14) according to any one of Claims 6 to 9 and provided on the front face and/or on the rear face of the motor vehicle.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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FR2013706A FR3118126B1 (en) | 2020-12-18 | 2020-12-18 | Luminous device for a motor vehicle |
PCT/EP2021/086660 WO2022129617A1 (en) | 2020-12-18 | 2021-12-17 | Light-emitting device for a motor vehicle |
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EP4263286A1 true EP4263286A1 (en) | 2023-10-25 |
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EP21840908.4A Pending EP4263286A1 (en) | 2020-12-18 | 2021-12-17 | Light-emitting device for a motor vehicle |
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EP (1) | EP4263286A1 (en) |
CN (1) | CN116685801A (en) |
FR (1) | FR3118126B1 (en) |
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FR2904094B1 (en) * | 2006-07-21 | 2008-10-03 | Valeo Vision Sa | LIGHT EMITTING DIODE LIGHTING DEVICE EQUIPPED WITH AN EXTERNAL COOLING SYSTEM. |
JP4697215B2 (en) * | 2007-11-20 | 2011-06-08 | 市光工業株式会社 | Vehicle lighting |
DE102008061526A1 (en) * | 2008-12-10 | 2010-06-17 | Daimler Ag | Vehicle i.e. motor vehicle, headlight, has cooling bodies, which are thermally coupled with LED light sources arranged within housing by carrier elements, and cooling element movably supported with LED light sources |
JP2012226997A (en) * | 2011-04-20 | 2012-11-15 | Koito Mfg Co Ltd | Vehicular headlight |
DE102014217522A1 (en) * | 2014-09-02 | 2016-03-03 | Osram Gmbh | Lighting device with movable support |
CN211316066U (en) * | 2019-11-27 | 2020-08-21 | 华域视觉科技(上海)有限公司 | Vehicle lighting device and vehicle |
-
2020
- 2020-12-18 FR FR2013706A patent/FR3118126B1/en active Active
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2021
- 2021-12-17 CN CN202180084827.3A patent/CN116685801A/en active Pending
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CN116685801A (en) | 2023-09-01 |
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