Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K35/00—Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles
  • B60K35/20—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor
  • B60K35/28—Output arrangements, i.e. from vehicle to user, associated with vehicle functions or specially adapted therefor characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver
• • 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
  • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
  • B60Q1/507—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking specific to autonomous vehicles
• • 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
  • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
  • B60Q1/543—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating other states or conditions of the vehicle
• • 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
  • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
  • B60Q1/50—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking
  • B60Q1/545—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic for indicating other intentions or conditions, e.g. request for waiting or overtaking for indicating other traffic conditions, e.g. fog, heavy traffic
• • G—PHYSICS
  • G06—COMPUTING; CALCULATING OR COUNTING
  • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
  • G06V20/00—Scenes; Scene-specific elements
  • G06V20/50—Context or environment of the image
  • G06V20/56—Context or environment of the image exterior to a vehicle by using sensors mounted on the vehicle
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
  • B60K2360/16—Type of output information
  • B60K2360/178—Warnings
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
  • B60K2360/00—Indexing scheme associated with groups B60K35/00 or B60K37/00 relating to details of instruments or dashboards
  • B60K2360/20—Optical features of instruments
  • B60K2360/33—Illumination features
  • B60K2360/334—Projection means
• • 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
  • B60Q2400/00—Special features or arrangements of exterior signal lamps for vehicles
  • B60Q2400/50—Projected symbol or information, e.g. onto the road or car body

Definitions

• the invention relates to the field of lighting and / or signaling, particularly for a motor vehicle and more particularly relates to the signaling of a lane change of a motor vehicle and in particular of an autonomous vehicle.
• Direction indicator lights whose flashing gives a light signal on external parts of the vehicle to prevent road users. Furthermore, the actuation of the direction indicator lights is accompanied by a light signaling inside the vehicle, for example on a dashboard, to prevent, this time the occupants of the vehicle, the situation of change of direction. way.
• This luminous display can also be accompanied, in the passenger compartment, by an audible signal.
• This signaling may however be insufficient in the context of the use of automated or autonomous vehicles.
• An automated vehicle is able to take over from the driver in certain predetermined situations recognized by the vehicle while an autonomous vehicle takes care of all the decisions concerning the movement of the vehicle from the start of the engine until it stops.
• the driver When the vehicle supports driving, whether it is an autonomous or automated vehicle, the driver may be no longer required to pay as much attention to the road scene as when driving the vehicle. even. If the signaling by the turn signals can allow the users of the vehicle, and in particular the driver of this vehicle, to understand that a lane change decision has been made by this vehicle, they have no information on the other hand allowing them to understand such a decision, which can be distressing for these users. It is therefore necessary today to propose solutions to these users allowing them not only to be informed that the vehicle has made the decision of a lane change but also to understand in a simple and fast way the reason for this change of route. way.
• the present invention is part of this context and aims to make the signaling of these lane changes more efficient and more precise, particularly in the context of the use of autonomous or automated vehicles.
• the object of the present invention relates to a light signaling device for a lane change for a motor vehicle.
• This device comprises at least one lane change detection element of said vehicle as well as at least one control module configured to receive and process information from the lane change detection element (s) and to control accordingly a transmission and projection element configured to project at least one pictogram on the road.
• the element or elements of emission and projection of the light signal can be arranged at the front of the vehicle, at the rear of the vehicle, or on at least a side portion of the vehicle. It is also conceivable to combine several of these provisions in which case a vehicle may comprise emission and projection elements of the light signal both at the front, at the rear and on at least one of its lateral parts.
• the projection position of the pictogram on the road can be adapted to different driving situations encountered.
• the at least one pictogram projected on the road is a sequence of pictograms calculated by the control module.
• a sequence of pictograms comprises several predefined pictograms projected simultaneously or successively by one or more emission and projection elements.
• the control module can thus calculate at least one instruction to be transmitted to the transmission and projection elements configured to project the pictogram sequence corresponding to this instruction based on information relating to the characteristics of the vehicle and its occupants.
• Vehicle and occupant characteristics means all the characteristics independent of the external environment of the vehicle, such as the height of the vehicle, the height of the driver's seat of the vehicle, or the size of the vehicle. driver of that vehicle. It is understood that the consideration of these particular characteristics makes it possible to determine an optimum position on the road for the projection of the pictograms, in order to improve the visibility of the pictogram sequence projected for the driver of the vehicle as well as for the passengers of this vehicle. vehicle.
• control module can also control at least one instruction to be transmitted to the transmission and projection elements according to information relating to the characteristics of third-party vehicles present in the environment of the vehicle comprising the device according to the present invention.
• the sequence of pictograms can be projected so as to be easily visible by the drivers and passengers of these third vehicles.
• the device according to the present invention may also comprise at least one environment analysis device configured to detect, in real time, the presence, and possibly the type, of objects on the road.
• These environmental analysis organs may thus comprise means for acquiring and processing images configured to interpret the presence of objects on the road.
• These acquisition and image processing means may for example be photo or video means, laser means or radar means associated with software capable of interpreting the signals transmitted by these acquisition means.
• These environmental analysis organs can also be configured to calculate, in real time, the distance separating the vehicle from the objects that surround it.
• the objects that can be detected by these environmental analysis organs are varied and may for example include other users of the road at a stop or moving, or areas of work.
• the projected sequence of pictograms may be different for a situation where an object in motion, such as a third-party vehicle, is exceeded for a stationary object such as a work zone, or for a related lane change. to a predefined route.
• the frequency or type of pictograms projected may be adapted according to the type of situation detected.
• the control module of the device can calculate the sequence of pictograms, and in particular the shape and the projection area of this sequence, as a function of a lane change situation determined by this control module according to the information from the detection element or elements as well as information relating to the environment of the vehicle transmitted to this control module by the environmental analysis organs.
• the control module accordingly transmits at least one instruction to at least one transmission and projection element configured to project the calculated pictogram sequence.
• This control module can also calculate, during the maneuver and according to the acquisition, in real time, new data by the environmental analysis organs, a modification of the sequence of pictograms being projected, that is to say a new sequence of pictograms, and transmit accordingly new instructions to the elements of emission and projection.
• the first instruction may be transmitted to a transmission and projection element disposed at the front of the vehicle while the second instruction may be transmitted to a second transmission and projection means disposed at the rear of the vehicle. vehicle.
• the control module can thus send the instructions to one or more transmission and projection elements.
• These instructions include for example the shape of the pictograms to be projected, their color and also their position on the road according to the characteristics of the vehicle but also according to the positions of the other road users, the positions of these road users making by example part of the information transmitted by the environmental analysis bodies.
• At least one emission and projection element of the device according to the invention may comprise optical electromechanical microsystems.
• These electromechanical microsystems reflect rays emitted by a light source according to their position, and all of the rays thus reflected form the pictogram or pictograms.
• These electromechanical microsystems may consist of mirrors movable in rotation about an axis, so as to pivot each between two extreme positions, at a determined rotational speed. In a first position, the reflected rays are oriented towards the output of the transmitting and projecting element while they are locked in the second position.
• the position of each mirror defines for all the mirrors a given configuration that can form a pixelated beam, capable of projecting an image in a fixed manner, or variable by changing the position of the appropriate mirrors.
• the invention also relates to a motor vehicle equipped with at least one lane assist device according to the invention.
• This invention particularly relates to autonomous or automated motor vehicles. Indeed, thanks to a projection on the road pictograms warning a change of lane, the driver and all passengers of the vehicle are warned that the vehicle has taken into account the need for this change of lane. For example, users see an object approaching and can be reassured to see that the vehicle projects a sequence of pictograms showing the path that will follow.
• the present invention also comprises a light-signaling method of a lane change comprising a step of detecting lane change of the vehicle, a step of calculation by the control module of at least one sequence of pictograms adapted to the situation detected.
• This signaling method may also comprise, according to an embodiment of the present invention, a step of acquiring information relating to the environment of the vehicle by the environmental analysis organs, a step of transmission of these information by these environmental analysis organs to the control module and a step of calculation by this control module of the sequence of pictograms to project taking into account said information relating to the environment of the vehicle.
• FIG 1 is a schematic view, in block diagram form, of the operation of a light signaling device of a lane change according to the invention
• FIGS. 2 to 5 are a schematic representation of the light-signaling method implemented by the device according to the present invention in a first situation
• FIG. 6 is a schematic representation of the light signaling method implemented by the device according to the present invention in a second situation.
• FIG. 1 schematically illustrates an operation of a light-signaling device 1 for a lane change according to the present invention.
• the light-signaling device 1 comprises at least one lane-changing detection element 2, at least one control module 3, at least one emission and projection element 4 of a light signal and at least one light-emitting element. environmental analysis 6.
• the detection element 2 lane change can for example be a satellite tracking system that detects a future lane change according to a route programmed by a user of the vehicle at the beginning of the journey.
• the lane change detection element 2 may also be autonomous vehicle control software comprising the device 1 according to the present invention, which makes the decision to change lanes.
• a lane change information 7 is transmitted to the control module 3 which calculates, accordingly, at least one pictogram, advantageously several pictograms forming a sequence of pictograms 9, to project on the road.
• the control module 3 calculates a sequence of pictograms 9 to project on the road.
• instructions 8 corresponding to this sequence of pictograms 9 are transmitted by the control module 3 to at least one transmission and projection element 4 configured to project the pictogram sequence 9 on the road.
• sequence of pictograms means several pictograms which follow each other and whose logical succession forms information with variable data over time.
• the emission and projection elements 4 may be arranged to project the sequence of pictograms 9 forwards, backwards or laterally relative to the vehicle.
• the same vehicle may have a plurality of emission and projection elements 4 arranged to project all or part of the sequence of pictograms 9 in different zones.
• These emission and projection elements 4 operate independently of each other and can therefore project the pictograms simultaneously or successively according to the instructions transmitted by the control module 3.
• the emission and projection elements 4 comprise at least one light source associated with a matrix of micromirrors, forming an electromechanical microsystem, known by the acronym MEMS for the English translation “MicroElectroMechanical Systems ".
• MEMS MicroElectroMechanical Systems
• These electromechanical microsystems consist of movable mirrors able to reflect part of the light rays emitted by the light source, each mirror being rotatably mounted about an axis, so as to pivot between two extreme positions, at a rotational speed determined.
• the position of each mirror defines for the set of micromirrors a given configuration that can form a pixellated image. It is thus possible to project at least one pictogram in a fixed manner, or variable by changing the position of the appropriate mirrors.
• the control module 3 can take several parameters into account in order to calculate the sequence of pictograms 9 and the instructions 8 Corresponding to transmit to the elements of emission and projection 4. This control module 3 can for example calculate the instructions 8 corresponding to the sequence of pictograms 9 according to the characteristics 12 of the vehicle and its occupants. It should be noted that the characteristics of the vehicle are independent of the external environment of this vehicle.
• These characteristics 12 may for example relate to the position and / or orientation of the seats, the position and / or size of the occupants of the vehicle, the height of the car or the number of passengers. All of these characteristics 12 allow the control module 3 to calculate an optimal projection zone of the sequence of pictograms 9 allowing the driver of the vehicle, and the largest number of occupants of this vehicle, to see the sequence of pictograms 9 projected and thus to be informed of the upcoming lane change.
• the light-signaling device 1 may comprise at least one analysis unit 6 of the environment outside the vehicle.
• This environmental analysis unit 6 is in particular configured to detect and interpret the presence of objects in the environment of a vehicle comprising the device 1 according to the present invention. It can also be configured to measure the outdoor brightness, analyze the type of road surface or detect the presence of roughness on this road. This environmental analysis unit 6 can also be configured to calculate the distance separating the vehicle from the detected objects.
• the analysis unit 6 of the environment may include image acquisition and processing means, configured to interpret the presence of objects on the road.
• the acquisition means may notably consist of photo-video means, radar systems, laser means or any other sensor making it possible to collect the same type of data.
• This analysis organ 6 of the environment then also includes means for processing the collected images capable of interpreting the presence and position of objects.
• the analysis unit 6 of the environment transmits the information thus collected to the control module 3 which can then take them into account when calculating the sequence of pictograms 9 to be projected alternately or cumulatively to take into account the characteristics 12 of the vehicle.
• this information can be collected by the analysis unit 6 of the environment in real time, which then allows the control module 3 to be able to modify the sequence of pictograms 9 to be projected in real time, for example as a function of the evolution of the position of third-party vehicles.
• the objects that can be detected by the analysis unit 6 of the environment are varied and include all the objects with which the vehicle is likely to collide. It may for example be other vehicles, moving or not, pedestrians or areas of work.
• the information concerning the external environment transmitted to the control module 3 by the analysis unit 6 of the environment may enable this control module 3 to adapt at least one appearance of the sequence of pictograms 9 to be projected.
• the control module 3 may, for example, modify a shape, a color or an intensity of this sequence of pictograms 9.
• the emission and projection elements 4 of the light signal may thus comprise at least one diode RGB (Red - Green - Blue) capable of projecting light signals of different colors.
• information concerning the presence of objects in the vehicle environment also enables the control module 3 to adapt the projection area of the sequence of pictograms 9 so that it is clearly visible to all users. present in this environment.
• the pictogram sequence 9 can be projected beyond the detected object 14 so that the road users located behind this object can also perceive this projected sequence on the ground.
• control module 3 can take into account both the information relating to the characteristics of the vehicle and its occupants, as well as the information relating to the environment transmitted to this control module 3 by the analysis unit 6 of the environment. The control module 3 can then calculate the sequence of pictograms 9 and the instructions 8 corresponding to the projection of this sequence of pictograms 9 so that the users of the vehicle as well as the users present in the environment of this vehicle are alerted to the change. track and the reason for this lane change.
• Figures 2 to 5 illustrate a first lane change situation implementing the light signaling device according to the invention.
• a first autonomous vehicle 13 is equipped with the light signaling device 1 according to the invention.
• the first autonomous vehicle 13 is shown in a situation in which the environmental analysis unit detects the presence of an object 14.
• the object 14 is a second vehicle traveling at a speed below the pace to which rolls the first autonomous vehicle 13, and the first autonomous vehicle 13 then makes the decision to engage a maneuver beyond this object 14.
• the lane detection detection element detects the upcoming lane change and sends the information of this change of lane, and the reasons which impose it, to the control module which calculates then a sequence of pictograms to project on the road.
• the light signaling device 1 can be installed in a conventional vehicle, the lane change decision to double the object 14 then being taken by the driver of this conventional vehicle. It is understood that in this variant, the projection of pictogram (s) mainly allows other occupants of the vehicle to be informed of the specificity of the lane change, the driver being in this case aware of these reasons.
• the projected sequence of pictograms comprises five different pictograms 15, 1 6, 17, 18, 19, some of which are projected simultaneously and others successively relative to one another.
• the control module can share the pictogram sequence in different parts and thus to transmit different instructions to different emission and projection elements, each of the instructions corresponding to one of the parts of the calculated pictogram sequence.
• FIG. 3 In Figure 3 are illustrated two pictograms 15, 16 defining a first portion of the sequence of pictograms.
• a first pictogram 15 represents an arrow indicating the change of lane which will be operated by the first vehicle 13 and a second pictogram 1 6 indicates to the users located at the rear of the first vehicle 13 that a lane change will be made by this first vehicle 13.
• the first pictogram 15 is projected in an area visible by the occupants of the first vehicle 13 and by the occupants of the object 14 detected while the second pictogram 16 is projected in an area visible at least by the occupants of the vehicle or vehicles following the first vehicle 13.
• a second part of the sequence of pictograms is illustrated in Figure 4 by two new pictograms 17, 18.
• These new pictograms 17, 18 indicate a change of lane in progress, this lane change corresponding in this case to an overshoot.
• the pictogram 17 warns the users arriving behind the first vehicle 13 that an overtaking is in progress, while the pictogram 18 indicates the direction of movement of the first vehicle 13 in order to make visible, both for the occupants of the first vehicle 13 that for those of the object 14, the progress of the overtaking.
• the control module can provide a third part of the sequence of pictograms comprising a still different pictogram 19 indicating that the first vehicle 13 will fall back on the track on which it was initially.
• the control module is configured to calculate an optimal projection area for each of these pictograms taking into account, as mentioned above, the characteristics of the vehicle and its occupants but also other road users.
• the pictograms are projected so as to be visible to all road users so that they be advised of the maneuver performed, as well as the progress of this maneuver.
• the pictograms 15, 18 and 19 are projected on the road by emission and projection elements arranged at the front of the first vehicle 13 while the pictograms 1 6 and 17 are projected on the road by emission and projection elements arranged at the rear of this first vehicle 13.
• the emission and projection elements arranged at the front of the vehicle may for example be arranged at the level of the side mirrors or the central rearview mirror and the emission and projection elements arranged at the rear of the vehicle may for example be arranged in the vicinity of conventional lighting systems.
• FIG. 6 represents a second lane change situation, in which the object 14 detected by the environmental analysis unit and motivating the change of lane by the vehicle 13 is a work zone.
• the control module receives the information of the detection of a change of lane by the lane-detection element and the information that the object 14 to be exceeded is a zone of work by the lane-detection element. environmental analysis body. With this information, the control module calculates the shape and the projection position of the sequence of pictograms. In this example, three pictograms 15, 16, 20 are simultaneously projected by several emission and projection elements.
• pictogram 15 indicating a future lane change to the driver and the occupants of the first vehicle 13 as well as the pictogram 1 6 warning the users located behind the first vehicle 13 that a change of The second vehicle will be initiated by this first vehicle 13.
• an additional pictogram 20 is also projected and makes it possible to warn the road users following the vehicle that the upcoming lane change is linked to the presence of a vehicle. work area.
• the environmental analysis unit can operate in real time and can therefore send information, in real time, to the control module.
• the control module can recalculate the sequence of pictograms according to these new parameters and consequently send new instructions to the transmission elements and projection.
• the invention finds many advantageous applications, whether to inform users of a change of lane or the reasons for this change of lane.
• At least one channel change detection element configured to calculate at least one instruction corresponding to at least one pictogram, and at least one emission and projection element of said pictogram.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Transportation (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• Automation & Control Theory (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Multimedia (AREA)
• Theoretical Computer Science (AREA)
• Lighting Device Outwards From Vehicle And Optical Signal (AREA)
• Traffic Control Systems (AREA)

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• 2017
  • 2017-04-13 FR FR1753240A patent/FR3065191B1/fr active Active
• 2018
  • 2018-04-11 CN CN201880024874.7A patent/CN110573377B/zh active Active
  • 2018-04-11 WO PCT/EP2018/059272 patent/WO2018189232A1/fr unknown
  • 2018-04-11 US US16/604,736 patent/US10974642B2/en active Active
  • 2018-04-11 EP EP18718414.8A patent/EP3609742A1/de active Pending

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