EP3519727B1 - Module d'émission lumineuse amélioré pour véhicule automobile - Google Patents

Module d'émission lumineuse amélioré pour véhicule automobile Download PDF

Info

Publication number
EP3519727B1
EP3519727B1 EP17771479.7A EP17771479A EP3519727B1 EP 3519727 B1 EP3519727 B1 EP 3519727B1 EP 17771479 A EP17771479 A EP 17771479A EP 3519727 B1 EP3519727 B1 EP 3519727B1
Authority
EP
European Patent Office
Prior art keywords
light
substrate
screen
elements
emitting
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.)
Active
Application number
EP17771479.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3519727A1 (fr
Inventor
Vincent Godbillon
Franck MILLON
Jean-Didier KINFACK
Patrice Collot
Lothar Seif
Natacha AUDY
Arnaud ABALA
Lingxuan Zhu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP3519727A1 publication Critical patent/EP3519727A1/fr
Application granted granted Critical
Publication of EP3519727B1 publication Critical patent/EP3519727B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • 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]
    • F21S41/151—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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/30—Fog lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/10—Position lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/15—Side marker lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/20—Direction indicator lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/35—Brake lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/40—Rear fog lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/45—Reversing lights
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2103/00—Elongate light sources, e.g. fluorescent tubes
    • F21Y2103/30—Elongate light sources, e.g. fluorescent tubes curved
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/20—Light sources with three-dimensionally disposed light-generating elements on convex supports or substrates, e.g. on the outer surface of spheres
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/50—Light sources with three-dimensionally disposed light-generating elements on planar substrates or supports, but arranged in different planes or with differing orientation, e.g. on plate-shaped supports with steps on which light-generating elements are mounted
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the field of the invention relates to light emitting devices for motor vehicles, and in particular to lighting and/or signaling devices.
  • a large number of these devices comprise a light emission module provided with a plurality of photoemissive elements forming the light emission core of the device.
  • the devices In certain applications, in particular for signaling devices intended to be arranged at the rear of a vehicle, the devices have a curved profile, that is to say curved, so as to match the shape of the bodywork at the level from which they are received.
  • the document EP 2 671 756 A2 describes a light emitting module which comprises the technical characteristics of the preamble of claim 1.
  • this geometric configuration results in numerous constraints on the design of the devices. Indeed, in particular, in addition to possible considerations of homogeneity of the light rendering obtained which must result in a difficulty or even an impossibility for the observer to distinguish the photoemissive elements in a unitary manner within it, this type of device is subject to regulations which require in particular the device to have a spatial distribution of light intensity having minimum values in certain directions and/or not exceeding maximum values in other directions.
  • a solution commonly used to achieve this result consists of having a substrate receiving the photoemissive elements in the form of a plurality of flat plates disjointed from each other and oriented in a chosen manner, for example substantially orthogonal to one or several directions of light emission that regulations require to be favored.
  • the invention aims to propose a light emission module and a light emission device which does not have these drawbacks.
  • the main direction of emission of each photoemissive element of said part is substantially parallel to a local plane tangential to the zone of the substrate associated with the photoemissive element considered.
  • the main portion of the substrate and the screen are substantially parallel.
  • the photoemissive elements of said part are arranged along a longitudinal direction of the substrate, the distances separating two consecutive elements along said direction being substantially identical.
  • the photoemissive elements are substantially at the same distance from the screen, the distance between two consecutive photoemissive elements being less than or equal to the distance separating the photoemissive elements from the screen.
  • the illuminated surface of the screen is homogeneous during operation of the light emission module.
  • the screen and the substrate define between them a space extending from the screen to the substrate, said space comprising a gas and the photoemissive elements, said space being devoid of optical deflection element of the light emitted by the photoemissive elements or an element for guiding the light emitted by the photoemissive elements other than said gas and said photoemissive elements.
  • the photoemissive elements are in contact with said gas.
  • the substrate is made from a reinforced epoxy resin composite and has a thickness of between 0.3 mm and 1.6 mm.
  • the face of the substrate carrying the photoemissive elements is adapted to reflect at least part of the light emitted by the photoemissive elements reaching it.
  • the face of the substrate carrying the photoemissive elements is adapted to diffuse at least part of the light emitted by the photoemissive elements reaching it.
  • At least two photoemissive elements are arranged side by side along the substrate, at least one of said two photoemissive elements being pivoted towards the other or away from the other, so that the respective main directions of emission of the two photoemissive elements are coplanar and not parallel.
  • the light emission module further comprises shaping optics interposed between at least one photoemissive element and the screen, the shaping optics being configured to deflect at least a portion of the light emitted by said at least one photoemissive element.
  • the screen is made from a material having diffusion properties.
  • the screen has a face comprising microstructures adapted to diffuse the light emitted by the photoemissive elements.
  • the light emission module further comprises a control assembly adapted to control at least the switching on and off of the photoemissive elements.
  • control assembly comprises a plurality of control modules respectively coupled to photoemissive elements.
  • the control modules are for example arranged on the substrate at a face thereof opposite to that carrying the photoemissive elements.
  • the invention further relates to a lighting and/or signaling device for a motor vehicle, the lighting and/or signaling device comprising a light emission module as defined above.
  • the motor vehicle extends along an axis, the light emission module having a preferred direction of light emission substantially parallel to said axis of the motor vehicle and substantially horizontal.
  • the motor vehicle extends along an axis, the contour of the main portion of the substrate and the contour of the screen having substantially the same shape in projection on a plane orthogonal to said axis of the vehicle.
  • the lighting and/or signaling device further comprises a housing and a closing glass cooperating with one another to delimit a cavity receiving all or part of the light emission module.
  • the lighting and/or signaling device further comprises a receiving housing provided within the cavity and receiving all or part of the light emission module, the screen closing at least part of said accommodation.
  • FIGS. 1a and 1b illustrate a light emitting device 2 according to the invention, hereinafter device 2.
  • Device 2 is configured to emit light.
  • the device 2 is advantageously intended to be integrated into a motor vehicle.
  • it is a light emitting device for a motor vehicle.
  • the device 2 is a lighting and/or signaling device for a motor vehicle.
  • It is for example configured to implement one or more photometric functions.
  • a photometric function is for example a lighting and/or signaling function visible to a human eye. Note that these photometric functions may be the subject of one or more regulations establishing requirements for colorimetry, intensity, spatial distribution according to a so-called photometric grid, or even visibility ranges of the emitted light.
  • the device 2 is for example a lighting device and then constitutes a vehicle headlight - or headlight - intended to be arranged at the front of the vehicle. It is then configured to implement one or more photometric functions, for example chosen from a low beam function called a “code function”, a high beam function called a “road function”, a fog light function.
  • the device is a signaling device intended to be arranged at the front or rear of the vehicle.
  • the photometric functions that it is configured to implement include a direction change indication function, a daytime running light function known by the English acronym DRL, for “Daytime Running Light”, a front light signature function, a position light function, a so-called “Side” function -marker”, which comes from English and can be translated as lateral signaling.
  • these photometric functions include a reversing indication function, a stop function, a fog light function, a direction change indication function, a rear light signature function, a lantern function, a “Side-marker” function.
  • the device 2 is intended for lighting the passenger compartment of a vehicle and is then intended to emit light mainly into the passenger compartment of the vehicle.
  • the device 2 is described in a non-limiting manner in a configuration in which it is intended to emit light outside the vehicle and is a rear signaling device.
  • the device 2 comprises a housing 4 and a closing glass 6 cooperating with one another to internally delimit a cavity 8, as well as a light emission module 10 according to the invention, hereinafter module 10.
  • the device 2 is curved, or curved.
  • the housing and the glass are curved, here to match the shape of the vehicle body at the region in which the device 2 is intended to be arranged.
  • the leftmost portion of the device Figure 1b is for example intended to be arranged on the exterior side of the vehicle, the right part being conversely oriented towards a median plane of the vehicle.
  • Module 10 is arranged in whole or in part in cavity 8.
  • the device 2 comprises a receiving housing 12 for receiving the module 10.
  • This housing is for example provided in the housing 4.
  • this receiving housing 12 is advantageously closed towards the front by an element forming a screen for diffusing the light generated by the module 10.
  • the internal face(s) of the housing 12 advantageously have reflective and diffusing optical properties.
  • Module 10 is configured to emit light. Advantageously, as in the example of Figures 1a and 1b , it is arranged to emit light towards the closing glass (which is transparent for at least part of this light emitted by module 10).
  • the device 2 is configured to present a spatial distribution of light intensity having, for at least a plurality of given directions, minimum and/or maximum values. In other words, according to these directions, the light intensity emitted by the device 2 must be greater and/or less than a predetermined threshold value. Threshold values are for example defined by one or more regulations.
  • a direction P is illustrated in Figure 1b , and is for example a horizontal direction (in the sense of the orientation of the device 2 within the vehicle) parallel to an axis of movement X of the vehicle along which the vehicle extends and according to which the light intensity emitted by the device 2 must be greater than a given threshold value.
  • This direction P can be seen as a preferred direction of emission (among a plurality).
  • the module 10 comprises a substrate 14, photoemissive elements 16 and a screen 18.
  • the substrate 14 forms a support for the photoemissive elements 12.
  • it is configured to convey electrical energy to the photoemissive elements 12 for the generation of light rays by them.
  • it comprises means for conveying electrical energy configured for connecting the elements 12 to a source of electrical energy.
  • These means include, for example, metal or metallized connection elements, such as copper tracks or wires.
  • the substrate 14 has the general shape of a plate. In other words, its thickness is small compared to its other dimensions. It is for example of a generally polygonal shape, such as rectangular. Its corners are optionally rounded.
  • the Figure 2 illustrates two substrates 14 arranged in contact with each other. They can be seen as belonging to distinct modules 10 that the device 2 comprises. In this configuration, as described below, the respective screens 18 of the modules 10 are for example formed on the same part. As also illustrated in this Figure, the substrate 14 is arranged substantially horizontally relative to the orientation of the vehicle (upper substrate), or is inclined relative to the horizontal (lower substrate).
  • the substrate 14 has a contour C having rectilinear or non-rectilinear edges.
  • the shape of the contour C is advantageously chosen to correspond to the shape of the contour of the screen 18 associated in projection on a plane orthogonal to the axis X of the vehicle.
  • the outline of the substrate has the same general shape as that of the screen, but not necessarily the same dimensions. Furthermore, this is understood at a rotation around an axis parallel to the X axis.
  • the substrate 14 comprises a main portion 20 and tabs 22.
  • the main portion 20 gives the substrate 14 its general appearance. It has, for example, a general polygonal shape, such as rectangular. For example, it is formed by the entire substrate with the exception of the tabs 22 described below. However, in certain embodiments, the substrate may comprise regions other than the main portion and the tabs, and which extend for example from the outer edge of the main portion and away from the main portion. These regions are for example intended for receiving connectors or for fixing the substrate to the rest of the device 2.
  • the contour C corresponds to the contour of the main portion, ignoring these extension regions.
  • the main portion 20 is flexible. More specifically, it is adapted to deform elastically, in particular under the effect of a bending force, such as a bending tending to bring its longitudinal ends closer to each other and applied normally to one face of the substrate .
  • a bending force such as a bending tending to bring its longitudinal ends closer to each other and applied normally to one face of the substrate .
  • main portion and the substrate in general to be curved, in particular with a view to arranging the main portion of the substrate substantially parallel to the closing glass 6 and/or to the rear wall of the housing 4 when the device 2 is curved.
  • the tabs 22 are in the form of material tongues. They extend from the main portion. More specifically, they each extend from an internal edge of the main portion. In other words, they do not extend from an external edge of the substrate 14, that is to say from the edge facing outwards of the substrate 14.
  • These tabs are for example formed by cutting the substrate, which initially has a solid surface.
  • connection edge 22B (dotted on certain tabs of the Figure 2 ), and their other edges are free, that is to say disjointed from the substrate 14.
  • the connection edge 22B is for example integral with the main portion.
  • the tongues have a general polygonal shape, such as rectangular, all or part of the angles of which are optionally rounded.
  • the connection edge 22B corresponds to at least one side of this polygon, the other sides forming free edges.
  • the end tabs can be made to have dimensions or even a shape different from those of the tabs which are not proximal relative to the ends of the substrate.
  • the tongues 22 are substantially flat. Furthermore, advantageously, they are arranged to remain substantially flat in the event of elastic bending of the main portion.
  • FIG. 3 illustrates the geometric configuration of the tabs in such a flexed configuration.
  • the tongues extend substantially in a plane locally tangent to the main portion.
  • the tongues are advantageously made from the same material as the rest of the substrate 14. Their flatness, particularly in the flexed configuration of the main portion, has the effect of limiting the transmission of bending forces exerted on the main portion to the components arranged on the tabs and/or the welds making said components integral with the surface of said tabs, and results in maintaining their planar configuration while the main portion flexes.
  • the substrate 14 comprises for example a plurality of tabs 22 arranged consecutively along the substrate. They are for example thus arranged in an aligned manner along a longitudinal direction of the substrate.
  • connection edge 22B forms a longitudinal end of the proximal tongues relative to the same end of the substrate, the opposite edge being turned towards the tongue 22 coming afterwards in the direction of travel of the substrate from this end towards the other end.
  • connection edge 22B of the tabs is substantially parallel to the axis of local curvature of the substrate. In this way, the tabs are only slightly or not mechanically constrained by the bending force of the substrate 14.
  • the substrate can include a line of tabs as illustrated in Figure 2 , or else a plurality of lines of tongues extending parallel to each other and offset from each other transversely to this longitudinal direction.
  • the substrate is for example made from an epoxy resin composite reinforced, typically with glass fibers.
  • it is made from a material commonly called PCB FR-4 (PCB being the English acronym for Printed Circuit Board).
  • the photoemissive elements are arranged on a given face 24 of the substrate.
  • this face 24 is adapted to reflect at least part of the light coming from the elements 16 and reaching them.
  • this side is white.
  • this face 24 is also configured to diffuse at least part of the light coming from the elements 16 and reaching it.
  • the substrate is advantageously made in a single piece of the same material, as opposed to a configuration of portions of different materials connected to each other and forming a heterogeneous substrate.
  • the main portion extends from one end to the other of the substrate and is formed of a single portion made of a given material, the tabs being made integrally with this portion.
  • the photoemissive elements 16 are each configured to emit light when supplied with electrical energy appropriately. These elements 16 form the light emission core of module 10.
  • these elements 16 are semiconductor photoemissive elements adapted to generate photons by electroluminescence.
  • each element 16 of at least part of the elements 16 that the module 10 comprises is formed from a light-emitting diode.
  • the light-emitting structure that the element 16 comprises is a light-emitting diode, sometimes called an LED chip.
  • the photoemissive elements 16 comprises a diode and a housing 26 within which the corresponding diode is arranged. 26 boxes are sometimes called “packages”, which comes from English and can be translated as box.
  • the diodes themselves are sometimes called LED chips, and form the photoemissive structure of the photoemissive element.
  • the arrangement of the diode within the housing is chosen to obtain a main direction of emission of the corresponding diode which is chosen at the given orientation of the associated housing 26.
  • This main direction corresponds to the direction in which the element 16 considered emits maximum light intensity.
  • the photoemissive elements 12 are arranged on the substrate. As indicated previously, they are arranged on the same face 24 of the substrate. This face 24 faces the screen 18 and the closing glass 6.
  • the boxes 26 are fixed on the face 24.
  • the photoemissive elements are advantageously arranged on the tabs 22 of the substrate.
  • These lines are advantageously arranged in one or more lines. These lines are advantageously each parallel to a longitudinal direction of the substrate (which can be curved depending on the configuration of the substrate 14 considered).
  • the elements 16 are thus arranged in two parallel lines.
  • the distance separating two consecutive elements 16 along the substrate is substantially constant.
  • each element 16 is associated with at least one element 16 located substantially at the same location along the substrate.
  • the corresponding photoemissive elements are also arranged in columns each comprising at least two elements 16. Each column is advantageously substantially perpendicular to the longitudinal direction at least locally.
  • the distance separating two adjacent elements within a given column is substantially constant within the column, and preferably is the same for all the columns defined by the arrangement.
  • the distance separating two consecutive elements within a row is the same as that separating two consecutive elements within a column.
  • the distance separating two consecutive elements 16 within a row and/or a column is for example between the distance which separates the substrate from the screen, and 40% of this value.
  • the elements 16 are configured to present a main direction of emission angularly offset from the direction normal to the substrate at the level of the zone of the substrate carrying the element 16 considered. In other words, this direction does not correspond to the local normal to the substrate.
  • the elements 16 are configured to emit light in a preferred main direction angularly between a plane parallel to a local plane tangential to the corresponding zone of the substrate and the local normal to the substrate.
  • the corresponding elements 16 are configured to emit light in a preferred direction included in a plane substantially parallel to the local plane tangential to the zone of the corresponding substrate.
  • the photoemissive elements are configured so that this direction is parallel to the tab 22 on which they are located.
  • the corresponding elements 16 are light-emitting diodes known by the English name “Side-LED”, which can be translated as “side LED”.
  • the desired main direction is obtained by arranging the diode within the corresponding housing 26 appropriately.
  • module 10 comprising elements 16 emitting parallel to the local tangential plane to the substrate considered and/or others emitting angularly between the plane parallel to the local tangential plane and the normal to the zone considered.
  • the module 10 can comprise photoemissive elements whose main direction corresponds substantially to the local normal to the substrate.
  • the main directions oriented parallel to the local tangential plane have the references dp3 to dp6 and the associated local normals have references n loc3 to n loc6 .
  • the main directions having a configuration simply inclined with respect to the other corresponding normal are referenced dp1 and dp2 (the associated local normals are referenced n loc1 and n loc2 ).
  • the module 10 only comprises elements 16 having a main direction parallel to the local tangential plane.
  • the main directions are or are not substantially parallel to each other.
  • one and/or the other of the two photoemissive elements is pivoted relative to the other along an axis normal to the zone of the substrate carrying the element 16 considered. In this way, their main directions of emission are substantially coplanar but not parallel.
  • they are pivoted towards each other so that their main directions (that is to say here the original half-axis of the element 16 considered) intersect, as illustrated in Figure 2 for the rightmost tab. This makes it possible, for example, to compensate for the possible appearance of darker zones within the device in a region located between the two elements 16.
  • one and/or the other is pivoted away from the other, as illustrated on the lower substrate.
  • one of the two photoemissive elements has a main direction of emission aligned with the longitudinal direction of the substrate (possibly considered locally at the level of the zone carrying the photoemissive element considered when the substrate does not extend in a rectilinear direction), and the other a main horizontal direction.
  • the module 10 is for example configured to emit white, or even red or amber, light. Other colors are still possible depending on the intended application.
  • module 10 can include elements 16 configured to emit white light, others in amber color and/or others in red color.
  • the screen 18 is configured to form a surface illuminated from the light emitted by the elements 16. In addition, it is configured to diffuse at least part of the light received from the photoemissive elements and passing through it.
  • the screen is configured to form a substantially homogeneous illuminated surface.
  • homogeneous we mean that the photoemissive elements are not distinguishable to the naked eye within this surface illuminated by an observer whose gaze is directed towards the screen.
  • the distance between two adjacent photoemissive elements is less than or equal to the distance which separates them from the screen, and advantageously less than 70% of the latter .
  • H it can be determined from or as a minimum between on the one hand a local uniformity L_U and a global uniformity G_U.
  • the local uniformity is for example determined as follows. We consider a pixel X of the illuminated surface, the square region of side n (for example n pixels) centered on a distance n from the point X. The points Xi are for example regularly distributed around X.
  • the overall homogeneity is for example determined as a minimum of the respective homogeneities of the two regions.
  • the homogeneity H is advantageously greater than 85%.
  • the screen 18 is at least partly transparent to the light of the elements 16.
  • the screen 18 is said to broadcast “into the mass”. In other words, it is made from a diffusing material. This type of material is sometimes called opalescent.
  • the screen has a surface provided with microstructures 28 intended to diffuse the light from the photoemissive elements. They are advantageously designed to diffuse light by diffraction in transmission.
  • microstructures 28 are for example formed in the surface of the external face of the screen, that is to say the face facing the closing glass. They are present over the entire surface of the screen (they are illustrated on only part of the screen 18 in Figure 4 for the sake of clarity).
  • microstructures 28 are obtained by injection.
  • microstructures are for example in the form of depressions or projections formed in the surface of the face of the screen. They have characteristic dimensions of an order of magnitude between that of the wavelength of the light emitted by the photoemissive elements and a hundred times this order of magnitude.
  • the microstructures have a diffusion profile having a total width at half height whose opening angle at the top is between 25° and 80° in all directions on either side of the normal to the screen, more preferably between 30° and 60°.
  • the screen 18 has a general polygonal shape, such as rectangular, its angles being optionally rounded.
  • the screen is arranged facing the face of the substrate 14 carrying the photoemissive elements 16. It is located away from this face and the photoemissive elements.
  • the screen is located at a distance from the substrate, for example greater than 20 mm. It is for example between 20 mm and 90 mm.
  • the screen 18 is curved. Preferably, it has a curve identical to that of the substrate over at least part of its length.
  • the screen, or more specifically its face carrying the microstructures is arranged substantially parallel to at least part of the main portion of the substrate (that is to say the large face of the latter turned towards the screen). In this way, for at least part of the elements 16, all the photoemissive elements considered are all located substantially at the same distance from the screen 18.
  • the screen 18 is carried by a diffusion element 30 belonging to the module 10.
  • this element 30 comprises a fixing portion 32 surrounding the screen over at least part of its periphery. This portion 32 is provided for fixing the element 30 within the volume 8, and optionally within the housing 12, as well as for gripping the element 30.
  • element 30 can include several screens, as illustrated in Figure 4 .
  • it comprises a first substantially horizontal screen and a second screen 18 2 of bent shape extending from the first in an inclined manner relative to the horizontal.
  • the screen is arranged within the device 2 so as to at least partially close the housing 12 towards the front.
  • the screen and the substrate have respective contours whose shapes are advantageously a function of one another.
  • the shape of the contour of the substrate corresponds to that of the contour of the screen in projection on a plane orthogonal to the axis
  • the dimensions of the screen are greater than those of the substrate. In alternative configurations, the screen dimensions are smaller than the screen dimensions.
  • the element 30 is coupled to an envelope 34 with which it cooperates or within which it is arranged, the envelope being arranged in the housing 12 or defining the housing (for example by forming all or part of its wall ). Jointly with element 30 or not, the envelope defines a closed volume in which the photoemissive elements and the substrate are arranged. This volume is configured so that the light from the photoemissive elements does not exit the device 2 without first passing through the screen 18.
  • the envelope has an internal face adapted to reflect and/or diffuse at least part of the incident light coming from the elements 16.
  • it is white in color and/or has a surface metallization, and optionally presents a diffusing texturing on all or part of this internal face.
  • the module 10 advantageously comprises a control assembly 36 ( Figure 2 ) adapted to control at least the switching on and off of the photoemissive elements.
  • a control assembly 36 ( Figure 2 ) adapted to control at least the switching on and off of the photoemissive elements.
  • it is also configured to control the intensity of the light emitted by the photoemissive elements.
  • the assembly 36 comprises for example a plurality of control modules respectively coupled to a plurality of photoemissive elements for controlling them. These modules are for example distributed on the substrate, for example on the face of the substrate opposite to that receiving the elements 16.
  • control assembly is configured for the implementation of a light sequence during which all or part of the elements 16 is sequentially and/or simultaneously turned on and/or off.
  • this sequence is implemented in response to the detection of an event occurring at the vehicle level, such as the ignition of the vehicle, the opening of a door that it includes or the actuation of 'a direction change indication command.
  • the photoemissive elements 16 are controlled to emit by the control assembly 36 via the electrical energy conveyed by the substrate 14. In response, these emit light with maximum intensity according to their main direction of emission. This light is then diffused by the screen 18, after possible reflections on the envelope 34 and/or the face 24 of the substrate. Due to the orientation of their respective emission directions, satisfaction of the requirements in terms of spatial distribution of light intensity of the device 2 is facilitated.
  • control assembly 36 implements a light sequence, for example in response to an event detected at the vehicle level, or to a failure of one or other of the photoemissive elements of the system.
  • the invention has several advantages.
  • the presence of the tabs 22 ensures good flatness of the interface of the photoemissive elements with the substrate and promotes the holding of the device 2 over time by minimizing the stresses induced at the level of the fixings of the photoemissive elements or even of the structure itself. these elements.
  • the light rendering obtained is homogeneous, that is to say that the photoemissive elements are not discernible, or at least difficult to discern, as emission units within the light rendering obtained.
  • the module 10 comprises, in addition to the above elements, at least one optical shaping element interposed between at least one photoemissive element and the screen.
  • Each optical shaping element is configured to deflect at least a portion of the light from the corresponding photoemissive elements.
  • the volume delimited between the substrate and the screen (and which extends from one to the other) is devoid of optical element other than the gas filling this volume and the elements 16.
  • this volume is devoid of any element emitting light or deflecting light other than the elements 16 themselves and this gas (which is for example air), such as for example deflection optics or light guiding elements.
  • the module 10 is devoid of primary optics associated with the elements 16, such optics being presented for example in the form of a resin arranged in contact with the elements 16 and the substrate and interposed between the screen and the substrate, or even any optical light deflection element, such as a lens or an intermediate screen between the screen 18 and the elements 16.
  • the photoemissive elements are in contact with this gas filling the volume between the screen and the substrate.
  • the elements 16 are devoid of a sub-component aimed at directing the maximum light intensity emitted by each of them in a direction different from that in which they would emit it in the absence of this component.
  • certain known LED type photoemissive elements include an optical lens type device mounted integrally with the housing, components of this type having an impact on the optical behavior of the element considered resulting in a deviation in the maximum light intensity emitted by the elements 16.
  • the elements 16 of the device 2 according to the invention are devoid of such components: for financial reasons, it will in fact be preferable to optimize the spatial distribution of light intensities of the device by optimizing the arrangement of the elements 16 on the substrate, as well as the control of these elements 16, rather than by costly adding an optical device in or on the structure of said elements 16 itself.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Mathematical Physics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Illuminated Signs And Luminous Advertising (AREA)
EP17771479.7A 2016-09-28 2017-09-27 Module d'émission lumineuse amélioré pour véhicule automobile Active EP3519727B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1659222A FR3056678B1 (fr) 2016-09-28 2016-09-28 Module d'emission lumineuse ameliore pour vehicule automobile
PCT/EP2017/074547 WO2018060284A1 (fr) 2016-09-28 2017-09-27 Module d'émission lumineuse amélioré pour véhicule automobile

Publications (2)

Publication Number Publication Date
EP3519727A1 EP3519727A1 (fr) 2019-08-07
EP3519727B1 true EP3519727B1 (fr) 2024-02-21

Family

ID=57485728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17771479.7A Active EP3519727B1 (fr) 2016-09-28 2017-09-27 Module d'émission lumineuse amélioré pour véhicule automobile

Country Status (5)

Country Link
US (1) US10845022B2 (zh)
EP (1) EP3519727B1 (zh)
CN (1) CN109790965B (zh)
FR (1) FR3056678B1 (zh)
WO (1) WO2018060284A1 (zh)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3657067B1 (en) * 2018-11-23 2021-08-18 Valeo Iluminacion, S.A. Automotive lighting device and method for manufacturing an automotive lighting device
US11131438B2 (en) * 2018-12-19 2021-09-28 Valeo North America, Inc. IR illuminator with secondary function
JP2022035593A (ja) * 2020-08-21 2022-03-04 株式会社ファルテック 移動体搭載表示装置

Family Cites Families (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000100216A (ja) * 1998-09-21 2000-04-07 Ichikoh Ind Ltd 車両用ランプ装置
DE10020099A1 (de) * 2000-04-22 2001-10-25 Hella Kg Hueck & Co Kraftfahrzeugleuchte
ES2168071B1 (es) * 2000-07-12 2003-07-16 Barros Alejandro Rodriguez Retrovisor modular con señales multiples intercambiables para vehiculos de 2, 3, 4 o mas ruedas.
US6769798B2 (en) * 2002-04-11 2004-08-03 E'sam Co.,. Ltd. Side mirror cover and cover lamp to be used therefor
DE10250877B4 (de) * 2002-10-31 2008-09-04 Osram Opto Semiconductors Gmbh Lichtemittierendes Halbleiterbauelement, Herstellungsverfahren und Verwendung dafür, eine Vielzahl der lichtemittierenden Halbleiterbauelemente enthaltendes Modul und dessen Verwendung
DE10255709A1 (de) * 2002-11-29 2004-06-09 Hella Kg Hueck & Co. Fahrzeugleuchte
JP4631838B2 (ja) * 2006-10-20 2011-02-16 市光工業株式会社 車両用灯具
BRPI1007601A2 (pt) * 2009-04-24 2016-02-16 3M Innovative Properties Co "conjunto de luz"
FR2977926B1 (fr) * 2011-06-30 2014-09-12 Valeo Vision Dispositif optique et systeme de signalisation et/ou eclairage
EP2671756B1 (en) * 2012-06-08 2022-01-19 LG Innotek Co., Ltd. Lamp unit and vehicle using the same
US9194566B2 (en) * 2012-06-08 2015-11-24 Lg Innotek Co., Ltd. Lamp unit and vehicle lamp apparatus using the same
FR2995977B1 (fr) * 2012-09-26 2019-06-28 Valeo Vision Guide de lumiere pour un dispositif d'eclairage et/ou de signalisation de vehicule automobile
FR3009366B1 (fr) * 2013-08-02 2018-03-23 Valeo Vision Projecteur et systeme d'eclairage notamment pour vehicule automobile
JP6278510B2 (ja) * 2014-02-21 2018-02-14 株式会社小糸製作所 車両用灯具
WO2016006698A1 (ja) * 2014-07-10 2016-01-14 株式会社小糸製作所 灯具
KR101629663B1 (ko) * 2015-12-31 2016-06-13 에코캡 주식회사 헤드라이트 모듈
FR3056705B1 (fr) * 2016-09-28 2020-07-24 Valeo Vision Module d'emission lumineuse a commande amelioree notamment pour vehicule automobile

Also Published As

Publication number Publication date
FR3056678B1 (fr) 2020-07-24
CN109790965B (zh) 2021-11-16
CN109790965A (zh) 2019-05-21
WO2018060284A1 (fr) 2018-04-05
US20200041094A1 (en) 2020-02-06
EP3519727A1 (fr) 2019-08-07
FR3056678A1 (fr) 2018-03-30
US10845022B2 (en) 2020-11-24

Similar Documents

Publication Publication Date Title
EP1895228B1 (fr) Dispositif d'éclairage ou de signalisation d'aspect guide de lumière haute performance pour véhicule automobile
EP3273149B1 (fr) Module lumineux pour véhicule automobile
FR3056705A1 (fr) Module d'emission lumineuse a commande amelioree notamment pour vehicule automobile
EP3519727B1 (fr) Module d'émission lumineuse amélioré pour véhicule automobile
EP2098774A1 (fr) Système optique avec fonction principale pour véhicule automobile
EP2846996A1 (fr) Vitrage éclairant avec déflecteur incorporé
EP0947761A1 (fr) Feu de signalisation comprenant plusieurs sources lumineuses
EP1654912A1 (fr) Element lumineux comportant au moins un substrat et un revetement emettant de la lumiere
FR3097936A1 (fr) Dispositif lumineux pour véhicule automobile
WO2022129420A1 (fr) Module lumineux imageant la surface eclairee d'un collecteur avec bloqueur de rayons parasites
EP3604905B1 (fr) Dispositif lumineux pour vehicule automobile
EP3024697A1 (fr) Système d'éclairage, notamment pour un organe d'éclairage de véhicule automobile, a carte a circuit imprime inclinée par rapport a la direction d'éclairage
EP3301355B1 (fr) Procédé d' obtention d'un ensemble de diffusion de lumière, notamment pour véhicule automobile
EP3467375B1 (fr) Dispositif lumineux a faible epaisseur et eclairage homogene
EP3315857B1 (fr) Guide de lumière coudé amélioré
FR3061537A1 (fr) Module d'emission lumineuse a nappe de guidage ameliore
EP3589516B1 (fr) Dispositif lumineux pour vehicule automobile comprenant une source de lumiere comportant une pluralité d'élements émissifs
EP4045841A1 (fr) Système optique
FR3036769B1 (fr) Dispositif d'eclairage pour vehicule automobile
WO2023006673A1 (fr) Module lumineux pour phare de vehicule
EP3534062B1 (fr) Dispositif d'éclairage pour véhicule comprenant un masque à nervures pour la limitation de sortie de photons entre de guides de lumière
FR2858278A3 (fr) Dispositif d'eclairage pour une immatriculation de vehicule automobile
WO2023242300A1 (fr) Ensemble vitré pour véhicule automobile, procédé de fabrication associé
WO2023088826A1 (fr) Module lumineux avec fonctions d'éclairage et de signalisation
FR3105349A1 (fr) Dispositif d’éclairage et/ou de signalisation comprenant une pluralité d'éléments opaques.

Legal Events

Date Code Title Description
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: UNKNOWN

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE

PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20190325

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

DAV Request for validation of the european patent (deleted)
DAX Request for extension of the european patent (deleted)
STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20220113

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230528

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230925

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 602017079357

Country of ref document: DE

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: FRENCH