EP3857120A1 - Light guide for a vehicle lighting device - Google Patents

Light guide for a vehicle lighting device

Info

Publication number
EP3857120A1
EP3857120A1 EP19794591.8A EP19794591A EP3857120A1 EP 3857120 A1 EP3857120 A1 EP 3857120A1 EP 19794591 A EP19794591 A EP 19794591A EP 3857120 A1 EP3857120 A1 EP 3857120A1
Authority
EP
European Patent Office
Prior art keywords
guide portion
light
guide
freedom
optical path
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.)
Granted
Application number
EP19794591.8A
Other languages
German (de)
French (fr)
Other versions
EP3857120B1 (en
Inventor
Rodolphe Peron
Guillaume Royer
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.)
Stellantis Auto SAS
Original Assignee
PSA Automobiles SA
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 PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3857120A1 publication Critical patent/EP3857120A1/en
Application granted granted Critical
Publication of EP3857120B1 publication Critical patent/EP3857120B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • 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
    • F21S43/27—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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]

Definitions

  • the present invention generally relates to a light guide forming part of a light signaling device of a motor vehicle, such a light guide typically comprising a light source and a guide portion made of transparent material, for guiding light towards an exit surface visible from the outside environment of the vehicle.
  • An object of the present invention is to respond to the drawbacks of the prior art mentioned above and in particular, first of all, to provide a light guide which offers a simple fixing solution and which allows adaptations of design or conception, without requiring long and costly development operations.
  • a first aspect of the invention relates to a light guide of a vehicle light signaling device comprising at least one light source arranged to emit at least one signaling light, the light guide comprising:
  • first guide portion defining a first optical path
  • second guide portion defining a second optical path, following the first optical path
  • first guide portion and / or the second guide portion is integrally formed with:
  • positioning means arranged to block at least three degrees of freedom between the first guide portion and the second guide portion
  • - Locking means comprising at least one flexible portion, arranged to lock the blocking of said degrees of freedom, by elastic deformation of said at least one flexible portion.
  • the light guide according to the above implementation comprises positioning and locking means integrally formed in the first or second guide portion (the guide portions are separate and independent parts), so that there is no need to provide external fixing, which simplifies the overall system.
  • these guide portions are produced by molding a transparent plastic material. These are for example PMMA (poly (methyl methacrylate)) with a refractive index of 1.49 or polycarbonate with a refractive index of 1.59, and the integration of these positioning and locking means is easy, by simple design of the manufacturing mold.
  • these two guide portions which integrate their own coupling means between them (made of the same material), provide an integrated fixing solution.
  • the positioning means are arranged to block at least five degrees of freedom between the first guide portion and the second guide portion. Even more advantageously, the positioning means are arranged to block six degrees of freedom between the first guide portion and the second guide portion, so as to immobilize the two guide portions between them.
  • the positioning means comprise a plurality of support pads arranged on an exit surface of the first optical path or on an entry surface of the second optical path, and arranged to bear respectively on the surface of entry of the second optical path or on the exit surface of the first optical path, so as to block at least a first degree of freedom in translation in a first direction.
  • Such support pads can for example block an X translation, and also one or two rotations along an axis perpendicular to this direction.
  • the invention relates to a light guide of a vehicle light signaling device comprising at least one light source arranged to emit at least one signaling light, the light guide including:
  • a first guide portion comprising:
  • a second entry surface arranged to capture and direct the light emitted by the first exit surface towards a second optical path of the second guide portion ⁇ a second exit surface, arranged at the exit of the second optical path of the second portion guide characterized in that the first guide portion and / or the second guide portion is integrally formed with: positioning means arranged to block at least three degrees of freedom between the first exit surface and the second entry surface,
  • - Locking means comprising at least one flexible portion, arranged to lock the blocking of said degrees of freedom, by elastic deformation of said at least one flexible portion.
  • the positioning means are arranged to block at least five degrees of freedom between the first exit surface and the second entry surface.
  • the positioning means comprise a plurality of support pads arranged on one of the first outlet surface or of the second inlet surface, and arranged to bear on the other of the first surface exit or the second entry surface, so as to block at least a first degree of freedom in translation in a first direction.
  • Such support pads can for example block an X translation, and also one or two rotations along an axis perpendicular to this direction.
  • the positioning means comprise a plurality of hooks arranged on one of the first guide portion or of the second guide portion, so as to couple with the other of the first guide portion or of the second guide portion, so as to lock the first degree of freedom in the second direction, and to block at least a second degree of freedom in translation.
  • the second degree of freedom is typically in the Y direction.
  • the positioning means and the locking means comprise at least one flexible tab arranged on one of the first guide portion or of the second guide portion, so as to couple with the other of the first guide portion or the second guide portion, so as to block at least a third degree of freedom in translation and to lock the first guide portion on the second guide portion.
  • the third degree of freedom is typically in the direction Z. It is possible to envisage engagement or coupling by elastic interlocking, otherwise called clipping or clipping.
  • the first guide portion and / or the second guide portion are thin and / or planar guide portions.
  • the guide portions have a cross section (typically perpendicular to the optical path, that is to say the path of the light) which has a width significantly less than its length, and the total optical path has a length also significantly greater than the width of the cross section.
  • a second aspect of the invention relates to a signaling device, such as a device for indicating a change in direction and / or in position, comprising:
  • At least one light source arranged to emit at least one signaling light
  • said at least one light source is fixed on the first guide portion.
  • the light guide comprises two light sources, each arranged to emit specific signaling light.
  • a third aspect of the invention relates to a motor vehicle, comprising at least one light guide according to the first aspect of the invention.
  • FIG. 1 shows a general view of a light guide according to the invention
  • Figure 2 shows a rear view of the light guide of Figure 1;
  • Figure 3 shows a first guide portion of the light guide of Figure 1;
  • Figure 4 shows a second guide portion of the light guide of Figure 1;
  • Figure 5 shows a detail of the second guide portion of the light guide of Figure 1;
  • FIG. 6 shows a detail of the light guide of Figure 1, seen from a first angle
  • Figure 7 shows the detail of the light guide of Figure 1, seen from a second angle
  • Figure 8 shows another detail of the light guide of Figure 1
  • FIG. 9 represents two schematic examples of the embodiment of the light guide of FIG. 1.
  • Figure 1 shows a light guide according to the present invention, comprising a first guide portion 10 coupled to a second guide portion 20.
  • the first guide portion 10 defines a first optical path which is upstream (i.e. close to the light source), and the second guide portion 20 forms a second optical path which is downstream (i.e. the first guide portion 10 is located between the light source and the second guide portion 20).
  • this is the second portion guide 20 and in particular its outlet surface which will be visible to the customer.
  • the light guide comprises a first standard guide portion 10 usable on several vehicle models and a second guide portion 20 whose output is specific to a given vehicle.
  • FIG. 2 shows a rear view of the first guide portion 10 which embeds the light sources, which here are one or more light emitting diodes (LEDs or LEDs) mounted on an electronic circuit 40.
  • the light sources which here are one or more light emitting diodes (LEDs or LEDs) mounted on an electronic circuit 40.
  • the invention also provides an integrated fixing solution for securing the first guide portion 10 and the second guide portion 20, as shown in Figures 3 and 4.
  • pads 31 are formed on a surface d entry 20e of the second guide portion 20, which come to bear on an exit surface 10s of the first guide portion 10.
  • These studs 31 therefore form part of positioning means, and block, a first degree of freedom, here a translation along an axis X of the vehicle.
  • FIG. 5 shows these studs 31 in close-up.
  • the positioning means also include hooks 32b formed on the inlet surface 20e of the second guide portion 20 (visible in FIG. 4), which are housed in openings 32a formed in the outlet surface 10s of the first guide portion 10. These hooks 32b and openings 32a are part of the positioning means, and then block a second degree of freedom, here a translation along an axis Y of the vehicle.
  • Figures 6 and 7 show in close-up and at two different angles the assembled parts, with the hooks 32b engaged in the openings 32a.
  • a flexible tab 33a is provided on the first guide portion 10, to cooperate with a cleat 33b of the second guide portion, to block the last degree of freedom in translation (in the direction Z), and also to engage after deformation and elastic return on the cleat 33b (by clipping or clipping or elastic interlocking), so as to also form locking means, in addition to being part of the positioning means.
  • FIG. 8 represents a close-up of the flexible tab 32a engaged with the cleat 33b.
  • the studs 31, the openings 32a, the hooks 32b, the flexible tab 33a and the cleat 33b form means for positioning the first guide portion 10 on the second guide portion 20 and are integrated on these parts (made for example from a single block by injection / molding in a single material). Part of these positioning means also form locking means, so that the first guide portion 10 is firmly fixed to the second guide portion 20 to form the light guide according to the invention.
  • FIG. 9 shows two alternative embodiments of the light guide according to the invention which is coupled to two types of light sources 41 and 42.
  • the light sources 41 and 42 are stacked or offset in a direction normal to this view, fixed on a printed circuit 43, and opposite a single input surface of the first guide portion 10, which is coupled with the positioning and locking means with the second guide portion 20.
  • the light sources 41 and 42 are separated, so that the first guide portion 10 'has two inlet surfaces, and a single outlet surface, which is opposite screw with the entry surface of the second guide portion 20 '.
  • the second guide portion 20 or 20 ' is visible from the outside, so that only the latter would have to be modified in case of adaptation to a new vehicle.
  • the interfaces (positioning means and locking means) between the first guide portion 10 or 10 'the second guide portion 20 or 20' are identical, and always integrated directly into the body of these parts, which are then easy manufacturing and assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Light guide for a vehicle light-signalling device comprising at least one light source designed to emit at least one signal light, the light guide comprising: - a first guide portion (10) defining a first optical path, - a second guide portion (20) defining a second optical path following the first optical path, characterised in that the first guide portion (10) and/or the second guide portion (20) is integrally formed with: - positioning means designed to block at least three degrees of freedom between the first guide portion (10) and the second guide portion (20), - locking means which comprise at least one flexible portion and are designed to secure the blocking of said degrees of freedom by elastically deforming said at least one flexible portion.

Description

GU I DE DE LUM I ERE D’U N D ISPOSITI F D’ECLAI RAGE DE  GU I DE DE LUM I ERE D'U N D ISPOSITI F D’CLAY RAGE DE
VEH ICU LE  VEH ICU LE
[0001] La présente invention concerne de manière générale un guide de lumière faisant partie d’un dispositif de signalisation lumineuse d’un véhicule automobile, un tel guide de lumière comprenant typiquement une source de lumière et une portion de guidage en matière transparente, pour guider de la lumière vers une surface de sortie visible depuis l’environnement extérieur du véhicule. The present invention generally relates to a light guide forming part of a light signaling device of a motor vehicle, such a light guide typically comprising a light source and a guide portion made of transparent material, for guiding light towards an exit surface visible from the outside environment of the vehicle.
[0002] Il est connu dans l’art antérieur des guides de lumières avec plusieurs portions de guidage de lumière distinctes coopérant avec un guide de lumière ou une portion de guidage principale, comme le montre le document EP3118060A1 , mais ce document ne donne aucune solution de fixation de toutes ces portions de guidage, et il en résulte une complexité de fabrication pour maintenir ensembles tous ces composants. De plus, une modification de la forme du guide de lumière principal entraîne alors une redéfinition de tout l’ensemble, ce qui augmente alors les coûts de conception et d’outillage.  It is known in the prior art light guides with several separate light guide portions cooperating with a light guide or a main guide portion, as shown in document EP3118060A1, but this document gives no solution. fixing all these guide portions, and this results in a manufacturing complexity for holding all these components together. In addition, a modification of the shape of the main light guide then leads to a redefinition of the whole assembly, which increases the design and tooling costs.
[0003] Un but de la présente invention est de répondre aux inconvénients de l’art antérieur mentionnés ci-dessus et en particulier, tout d'abord, de proposer un guide de lumière qui propose une solution de fixation simple et qui permette des adaptations de design ou de conception, sans pour autant requérir de longues et coûteuses opérations de développement.  An object of the present invention is to respond to the drawbacks of the prior art mentioned above and in particular, first of all, to provide a light guide which offers a simple fixing solution and which allows adaptations of design or conception, without requiring long and costly development operations.
[0004] Pour cela un premier aspect de l'invention concerne un guide de lumière d’un dispositif de signalisation lumineuse de véhicule comprenant au moins une source de lumière agencée pour émettre au moins une lumière de signalisation, le guide de lumière comprenant :  For this, a first aspect of the invention relates to a light guide of a vehicle light signaling device comprising at least one light source arranged to emit at least one signaling light, the light guide comprising:
- une première portion de guidage définissant un premier chemin optique, - une deuxième portion de guidage définissant un deuxième chemin optique, à la suite du premier chemin optique, a first guide portion defining a first optical path, a second guide portion defining a second optical path, following the first optical path,
caractérisé en ce que la première portion de guidage et/ou la deuxième portion de guidage est intégralement formée avec : characterized in that the first guide portion and / or the second guide portion is integrally formed with:
- des moyens de positionnement agencés pour bloquer au moins trois degrés de liberté entre la première portion de guidage et la deuxième portion de guidage, positioning means arranged to block at least three degrees of freedom between the first guide portion and the second guide portion,
- des moyens de verrouillage comprenant au moins une portion flexible, agencés pour verrouiller le blocage desdits degrés de liberté, par déformation élastique de ladite au moins une portion flexible.  - Locking means comprising at least one flexible portion, arranged to lock the blocking of said degrees of freedom, by elastic deformation of said at least one flexible portion.
[0005] Le guide de lumière selon la mise en œuvre ci-dessus comprend de moyens de positionnement et de verrouillage intégralement formés dans la première ou deuxième portion de guidage (les portions de guidage sont des pièces distinctes et indépendantes), si bien qu’il n’y a pas besoin de prévoir de fixation externe, ce qui simplifie le système global. Typiquement, ces portions de guidages sont réalisées par moulage d'une matière plastique transparente. Il s'agit par exemple de PMMA (poly(méthacrylate de méthyle)) d'indice de réfraction de 1 ,49 ou de polycarbonate d'indice de réfraction de 1 ,59, et l’intégration de ces moyens de positionnement et de verrouillage est aisé, par simple conception du moule de fabrication. En d’autres termes, ces deux portions de guidage qui intègrent leurs propres moyens d’accouplement entre elles (réalisés dans la même matière), procurent une solution de fixation intégrée.  The light guide according to the above implementation comprises positioning and locking means integrally formed in the first or second guide portion (the guide portions are separate and independent parts), so that there is no need to provide external fixing, which simplifies the overall system. Typically, these guide portions are produced by molding a transparent plastic material. These are for example PMMA (poly (methyl methacrylate)) with a refractive index of 1.49 or polycarbonate with a refractive index of 1.59, and the integration of these positioning and locking means is easy, by simple design of the manufacturing mold. In other words, these two guide portions which integrate their own coupling means between them (made of the same material), provide an integrated fixing solution.
[0006] Avantageusement, les moyens de positionnement sont agencés pour bloquer au moins cinq degrés de liberté entre la première portion de guidage et la deuxième portion de guidage. Encore plus avantageusement, les moyens de positionnement sont agencés pour bloquer six degrés de liberté entre la première portion de guidage et la deuxième portion de guidage, de sorte à immobiliser les deux portions de guidage entre elles. [0007] Avantageusement, les moyens de positionnement comprennent une pluralité de plots d’appui agencés sur une surface de sortie du premier chemin optique ou sur une surface d’entrée du deuxième chemin optique, et agencés pour prendre appui respectivement sur la surface d’entrée du deuxième chemin optique ou sur la surface de sortie du premier chemin optique, de sorte à bloquer au moins un premier degré de liberté en translation selon une première direction. De tels plots d’appuis peuvent par exemple bloquer une translation en X, et aussi une ou deux rotations selon un axe perpendiculaire à cette direction. Advantageously, the positioning means are arranged to block at least five degrees of freedom between the first guide portion and the second guide portion. Even more advantageously, the positioning means are arranged to block six degrees of freedom between the first guide portion and the second guide portion, so as to immobilize the two guide portions between them. Advantageously, the positioning means comprise a plurality of support pads arranged on an exit surface of the first optical path or on an entry surface of the second optical path, and arranged to bear respectively on the surface of entry of the second optical path or on the exit surface of the first optical path, so as to block at least a first degree of freedom in translation in a first direction. Such support pads can for example block an X translation, and also one or two rotations along an axis perpendicular to this direction.
[0008] En d'autres termes et selon un mode de réalisation particulier, l'invention concerne un guide de lumière d’un dispositif de signalisation lumineuse de véhicule comprenant au moins une source de lumière agencée pour émettre au moins une lumière de signalisation, le guide de lumière comprenant :  In other words and according to a particular embodiment, the invention relates to a light guide of a vehicle light signaling device comprising at least one light source arranged to emit at least one signaling light, the light guide including:
- une première portion de guidage comprenant : - a first guide portion comprising:
• une première surface d’entrée agencée pour capter et diriger la lumière émise par la source de lumière vers un premier chemin optique de la première portion de guidage • a first entry surface arranged to capture and direct the light emitted by the light source towards a first optical path of the first guide portion
• une première surface de sortie, agencée en sortie du premier chemin optique de la première portion de guidage • a first outlet surface, arranged at the outlet of the first optical path of the first guide portion
- une deuxième portion de guidage comprenant :  - a second guide portion comprising:
• une deuxième surface d’entrée agencée pour capter et diriger la lumière émise par la première surface de sortie vers un deuxième chemin optique de la deuxième portion de guidage · une deuxième surface de sortie, agencée en sortie du deuxième chemin optique de la deuxième portion de guidage caractérisé en ce que la première portion de guidage et/ou la deuxième portion de guidage est intégralement formée avec : - des moyens de positionnement agencés pour bloquer au moins trois degrés de liberté entre la première surface de sortie et la deuxième surface d’entrée,• a second entry surface arranged to capture and direct the light emitted by the first exit surface towards a second optical path of the second guide portion · a second exit surface, arranged at the exit of the second optical path of the second portion guide characterized in that the first guide portion and / or the second guide portion is integrally formed with: positioning means arranged to block at least three degrees of freedom between the first exit surface and the second entry surface,
- des moyens de verrouillage comprenant au moins une portion flexible, agencés pour verrouiller le blocage desdits degrés de liberté, par déformation élastique de ladite au moins une portion flexible. - Locking means comprising at least one flexible portion, arranged to lock the blocking of said degrees of freedom, by elastic deformation of said at least one flexible portion.
[0009] Avantageusement, les moyens de positionnement sont agencés pour bloquer au moins cinq degrés de liberté entre la première surface de sortie et la deuxième surface d’entrée.  Advantageously, the positioning means are arranged to block at least five degrees of freedom between the first exit surface and the second entry surface.
[0010] Avantageusement, les moyens de positionnement comprennent une pluralité de plots d’appui agencés sur l’une de la première surface de sortie ou de la deuxième surface d’entrée, et agencés pour prendre appui sur l’autre de la première surface de sortie ou de la deuxième surface d’entrée, de sorte à bloquer au moins un premier degré de liberté en translation selon une première direction. De tels plots d’appuis peuvent par exemple bloquer une translation en X, et aussi une ou deux rotations selon un axe perpendiculaire à cette direction.  Advantageously, the positioning means comprise a plurality of support pads arranged on one of the first outlet surface or of the second inlet surface, and arranged to bear on the other of the first surface exit or the second entry surface, so as to block at least a first degree of freedom in translation in a first direction. Such support pads can for example block an X translation, and also one or two rotations along an axis perpendicular to this direction.
[0011] Avantageusement, les moyens de positionnement comprennent une pluralité de crochets agencés sur l’une de la première portion de guidage ou de la deuxième portion de guidage, de sorte à s’accoupler avec l’autre de la première portion de guidage ou de la deuxième portion de guidage, de sorte à verrouiller le premier degré de liberté selon la deuxième direction, et à bloquer au moins un deuxième degré de liberté en translation. Le deuxième degré de liberté est typiquement selon la direction Y.  Advantageously, the positioning means comprise a plurality of hooks arranged on one of the first guide portion or of the second guide portion, so as to couple with the other of the first guide portion or of the second guide portion, so as to lock the first degree of freedom in the second direction, and to block at least a second degree of freedom in translation. The second degree of freedom is typically in the Y direction.
[0012] Avantageusement, les moyens de positionnement et les moyens de verrouillage comprennent au moins une patte flexible agencée sur l’une de la première portion de guidage ou de la deuxième portion de guidage, de sorte à s’accoupler avec l’autre de la première portion de guidage ou de la deuxième portion de guidage, de sorte à bloquer au moins un troisième degré de liberté en translation et à verrouiller la première portion de guidage sur la deuxième portion de guidage. Le troisième degré de liberté est typiquement selon la direction Z. On peut envisager un engagement ou un accouplement par emboîtement élastique, autrement appelé clipsage ou clipage. Advantageously, the positioning means and the locking means comprise at least one flexible tab arranged on one of the first guide portion or of the second guide portion, so as to couple with the other of the first guide portion or the second guide portion, so as to block at least a third degree of freedom in translation and to lock the first guide portion on the second guide portion. The third degree of freedom is typically in the direction Z. It is possible to envisage engagement or coupling by elastic interlocking, otherwise called clipping or clipping.
[0013] Avantageusement, la première portion de guidage et/ou la deuxième portion de guidage sont des portions de guidage minces et/ou planes. En d’autres termes, les portions de guidage présentent une section transversale (typiquement perpendiculaire au chemin optique, c’est-à-dire au trajet de la lumière) qui présente une largeur nettement inférieure à sa longueur, et le chemin optique total présente une longueur également nettement supérieure à la largeur de la section transversale.  Advantageously, the first guide portion and / or the second guide portion are thin and / or planar guide portions. In other words, the guide portions have a cross section (typically perpendicular to the optical path, that is to say the path of the light) which has a width significantly less than its length, and the total optical path has a length also significantly greater than the width of the cross section.
[0014] Un deuxième aspect de l’invention concerne un dispositif de signalisation, tel qu'un dispositif d’indication de changement de direction et/ou de position, comprenant :  A second aspect of the invention relates to a signaling device, such as a device for indicating a change in direction and / or in position, comprising:
- un guide de lumière selon le premier aspect de l’invention,  - a light guide according to the first aspect of the invention,
- au moins une source de lumière agencée pour émettre au moins une lumière de signalisation  - at least one light source arranged to emit at least one signaling light
[0015] Avantageusement, ladite au moins une source de lumière est fixée sur la première portion de guidage. Advantageously, said at least one light source is fixed on the first guide portion.
[0016] Avantageusement, le guide de lumière comprend deux sources de lumière, chacune agencée pour émettre une lumière de signalisation spécifique.  Advantageously, the light guide comprises two light sources, each arranged to emit specific signaling light.
[0017] Un troisième aspect de l’invention concerne un véhicule automobile, comprenant au moins un guide de lumière selon le premier aspect de l’invention. [0018] D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à la lecture de la description détaillée qui suit d'un mode de réalisation de l'invention donné à titre d'exemple nullement limitatif et illustré par les dessins annexés, dans lesquels : A third aspect of the invention relates to a motor vehicle, comprising at least one light guide according to the first aspect of the invention. Other characteristics and advantages of the present invention will appear more clearly on reading the following detailed description of an embodiment of the invention given by way of non-limiting example and illustrated by the accompanying drawings, wherein :
- la figure 1 représente une vue générale d'un guide de lumière selon l'invention ;  - Figure 1 shows a general view of a light guide according to the invention;
la figure 2 représente une vue arrière du guide de lumière de la figure 1 ;  Figure 2 shows a rear view of the light guide of Figure 1;
la figure 3 représente une première portion de guidage du guide de lumière de la figure 1 ;  Figure 3 shows a first guide portion of the light guide of Figure 1;
la figure 4 représente une deuxième portion de guidage du guide de lumière de la figure 1 ;  Figure 4 shows a second guide portion of the light guide of Figure 1;
la figure 5 représente un détail de la deuxième portion de guidage du guide de lumière de la figure 1 ;  Figure 5 shows a detail of the second guide portion of the light guide of Figure 1;
- la figure 6 représente un détail du guide de lumière de la figure 1 , vu sous un premier angle ;  - Figure 6 shows a detail of the light guide of Figure 1, seen from a first angle;
la figure 7 représente le détail du guide de lumière de la figure 1 , vu sous un deuxième angle ;  Figure 7 shows the detail of the light guide of Figure 1, seen from a second angle;
la figure 8 représente un autre détail du guide de lumière de la figure 1 ;  Figure 8 shows another detail of the light guide of Figure 1;
la figure 9 représente deux exemples schématiques de réalisation du guide de lumière de la figure 1.  FIG. 9 represents two schematic examples of the embodiment of the light guide of FIG. 1.
[0019] La figure 1 présente un guide de lumière selon la présente invention, comprenant une première portion de guidage 10 accouplée à une deuxième portion de guidage 20. Par convention dans la présente demande, la première portion de guidage 10 définit un premier chemin optique qui est en amont (c’est-à-dire proche de la source de lumière), et la deuxième portion de guidage 20 forme un deuxième chemin optique qui est en aval (c’est-à-dire que la première portion de guidage 10 est située entre la source de lumière et la deuxième portion de guidage 20). Typiquement, c'est la deuxième portion de guidage 20 et en particulier sa surface de sortie qui sera visible pour le client. Figure 1 shows a light guide according to the present invention, comprising a first guide portion 10 coupled to a second guide portion 20. By convention in the present application, the first guide portion 10 defines a first optical path which is upstream (i.e. close to the light source), and the second guide portion 20 forms a second optical path which is downstream (i.e. the first guide portion 10 is located between the light source and the second guide portion 20). Typically, this is the second portion guide 20 and in particular its outlet surface which will be visible to the customer.
[0020] De cette manière, il est aisé de prévoir par exemple la première portion de guidage 10 avec une forme standard, et de modeler la surface de sortie 20s de la deuxième portion de guidage 20 pour respecter les contraintes d'aspect, si bien que le guide de lumière comprend une première portion de guidage 10 standard utilisable sur plusieurs modèles de véhicule et une deuxième portion de guidage 20 dont la sortie est spécifique à un véhicule donné. In this way, it is easy to provide for example the first guide portion 10 with a standard shape, and to model the outlet surface 20s of the second guide portion 20 to respect the appearance constraints, so that the light guide comprises a first standard guide portion 10 usable on several vehicle models and a second guide portion 20 whose output is specific to a given vehicle.
[0021 ] La figure 2 représente une vue arrière de la première portion de guidage 10 qui embarque les sources de lumières, qui sont ici une ou plusieurs diodes électroluminescentes (DELs ou LEDs) montées sur un circuit électronique 40. 2 shows a rear view of the first guide portion 10 which embeds the light sources, which here are one or more light emitting diodes (LEDs or LEDs) mounted on an electronic circuit 40.
[0022] L'invention propose aussi une solution de fixation intégrée pour solidariser la première portion de guidage 10 et la deuxième portion de guidage 20, comme le montrent les figure 3 et 4. En effet, des plots 31 sont formés sur une surface d'entrée 20e de la deuxième portion de guidage 20, qui viennent en appui sur une surface de sortie 10s de la première portion de guidage 10. Ces plots 31 font donc partie de moyens de positionnement, et bloquent dont un premier degré de liberté, ici une translation selon un axe X du véhicule. La figure 5 montre en gros plan ces plots 31 . The invention also provides an integrated fixing solution for securing the first guide portion 10 and the second guide portion 20, as shown in Figures 3 and 4. Indeed, pads 31 are formed on a surface d entry 20e of the second guide portion 20, which come to bear on an exit surface 10s of the first guide portion 10. These studs 31 therefore form part of positioning means, and block, a first degree of freedom, here a translation along an axis X of the vehicle. FIG. 5 shows these studs 31 in close-up.
[0023] Les moyens de positionnement comprennent aussi des crochets 32b formés sur la surface d'entrée 20e de la deuxième portion de guidage 20 (visibles figure 4), qui viennent se loger dans des ouvertures 32a ménagées dans la surface de sortie 10s de la première portion de guidage 10. Ces crochets 32b et ouvertures 32a font dont partie des moyens de positionnement, et bloquent alors un deuxième degré de liberté, ici une translation selon un axe Y du véhicule. Les figures 6 et 7 montrent en gros plan et selon deux angles différents les pièces assemblées, avec les crochets 32b engagés dans les ouvertures 32a. [0024] De plus, une patte flexible 33a est prévue sur la première portion de guidage 10, pour coopérer avec un taquet 33b de la deuxième portion de guidage, pour bloquer le dernier degré de liberté en translation (selon la direction Z), et aussi pour s'engager après déformation et retour élastique sur le taquet 33b (par clippage ou clipsage ou emboîtement élastique), de sorte à former aussi des moyens de verrouillage, en plus de faire partie des moyens de positionnement. La figure 8 représente un gros plan de la patte flexible 32a engagée avec le taquet 33b. The positioning means also include hooks 32b formed on the inlet surface 20e of the second guide portion 20 (visible in FIG. 4), which are housed in openings 32a formed in the outlet surface 10s of the first guide portion 10. These hooks 32b and openings 32a are part of the positioning means, and then block a second degree of freedom, here a translation along an axis Y of the vehicle. Figures 6 and 7 show in close-up and at two different angles the assembled parts, with the hooks 32b engaged in the openings 32a. In addition, a flexible tab 33a is provided on the first guide portion 10, to cooperate with a cleat 33b of the second guide portion, to block the last degree of freedom in translation (in the direction Z), and also to engage after deformation and elastic return on the cleat 33b (by clipping or clipping or elastic interlocking), so as to also form locking means, in addition to being part of the positioning means. FIG. 8 represents a close-up of the flexible tab 32a engaged with the cleat 33b.
[0025] En résumé, les plots 31 , les ouvertures 32a, les crochets 32b, la patte flexible 33a et le taquet 33b forment des moyens de positionnement de la première portion de guidage 10 sur la deuxième portion de guidage 20 et sont intégrés sur ces pièces (réalisées par exemple d'un seul bloc par injection/moulage en une seule matière). Une partie de ces moyens de positionnement forment aussi des moyens de verrouillage, si bien que la première portion de guidage 10 est fermement fixée à la deuxième portion de guidage 20 pour former le guide de lumière selon l'invention.  In summary, the studs 31, the openings 32a, the hooks 32b, the flexible tab 33a and the cleat 33b form means for positioning the first guide portion 10 on the second guide portion 20 and are integrated on these parts (made for example from a single block by injection / molding in a single material). Part of these positioning means also form locking means, so that the first guide portion 10 is firmly fixed to the second guide portion 20 to form the light guide according to the invention.
[0026] La figure 9 représente deux alternatives de réalisation du guide de lumière selon l'invention qui est accouplé à deux types de sources lumineuses 41 et 42.  FIG. 9 shows two alternative embodiments of the light guide according to the invention which is coupled to two types of light sources 41 and 42.
[0027] Dans la vue de gauche, les sources lumineuses 41 et 42 sont empilées ou décalées selon une direction normale à cette vue, fixées sur un circuit imprimé 43, et en vis-à-vis d'une seule surface d'entrée de la première portion de guidage 10, qui est accouplées avec les moyens de positionnement et de verrouillage avec la deuxième portion de guidage 20.  In the left view, the light sources 41 and 42 are stacked or offset in a direction normal to this view, fixed on a printed circuit 43, and opposite a single input surface of the first guide portion 10, which is coupled with the positioning and locking means with the second guide portion 20.
[0028] Dans la vue de droite, les sources de lumière 41 et 42 sont séparées, si bien que la première portion de guidage 10' présente deux surfaces d'entrée, et une seule surface de sortie, qui est en vis-à-vis avec la surface d'entrée de la deuxième portion de guidage 20'.  In the right view, the light sources 41 and 42 are separated, so that the first guide portion 10 'has two inlet surfaces, and a single outlet surface, which is opposite screw with the entry surface of the second guide portion 20 '.
[0029] En tout état de cause, seule la deuxième portion de guidage 20 ou 20' est visible de l'extérieur, si bien que seule cette dernière serait à modifier en cas d'adaptation à un nouveau véhicule. De plus, les interfaces (moyens de positionnement et moyens de verrouillage) entre la première portion de guidage 10 ou 10' la deuxième portion de guidage 20 ou 20' sont identiques, et toujours intégrées directement au corps de ces pièces, qui sont alors de fabrication et d'assemblage aisés. In any event, only the second guide portion 20 or 20 'is visible from the outside, so that only the latter would have to be modified in case of adaptation to a new vehicle. In addition, the interfaces (positioning means and locking means) between the first guide portion 10 or 10 'the second guide portion 20 or 20' are identical, and always integrated directly into the body of these parts, which are then easy manufacturing and assembly.
[0030] On comprendra que diverses modifications et/ou améliorations évidentes pour l'homme du métier peuvent être apportées aux différents modes de réalisation de l’invention décrits dans la présente description sans sortir du cadre de l'invention.  It will be understood that various modifications and / or improvements obvious to those skilled in the art can be made to the various embodiments of the invention described in the present description without departing from the scope of the invention.

Claims

REVENDICATIONS
1. Guide de lumière d’un dispositif de signalisation lumineuse de véhicule comprenant au moins une source de lumière (41 , 42) agencée pour émettre au moins une lumière de signalisation, le guide de lumière comprenant :  1. Light guide of a vehicle light signaling device comprising at least one light source (41, 42) arranged to emit at least one signal light, the light guide comprising:
- une première portion de guidage (10) définissant un premier chemin optique,  - a first guide portion (10) defining a first optical path,
- une deuxième portion de guidage (20) définissant un deuxième chemin optique, à la suite du premier chemin optique,  a second guide portion (20) defining a second optical path, following the first optical path,
dans lequel la première portion de guidage (10) et/ou la deuxième portion de guidage (20) est intégralement formée avec : in which the first guide portion (10) and / or the second guide portion (20) is integrally formed with:
- des moyens de positionnement agencés pour bloquer au moins trois degrés de liberté entre la première portion de guidage (10) et la deuxième portion de guidage (20),  positioning means arranged to block at least three degrees of freedom between the first guide portion (10) and the second guide portion (20),
- des moyens de verrouillage comprenant au moins une portion flexible, agencés pour verrouiller le blocage desdits degrés de liberté, par déformation élastique de ladite au moins une portion flexible, dans lequel les moyens de positionnement comprennent une pluralité de plots (31 ) d’appui agencés sur une surface de sortie du premier chemin optique ou sur une surface d’entrée du deuxième chemin optique, et agencés pour prendre appui respectivement sur la surface d’entrée du deuxième chemin optique ou sur la surface de sortie du premier chemin optique, de sorte à bloquer au moins un premier degré de liberté en translation selon une première direction, et dans lequel les moyens de positionnement comprennent une pluralité de crochets (32b) agencés sur l’une de la première portion de guidage (10) ou de la deuxième portion de guidage (20), de sorte à s’accoupler avec l’autre de la première portion de guidage (10) ou de la deuxième portion de guidage (20), de sorte à verrouiller le premier degré de liberté selon la deuxième direction, et à bloquer au moins un deuxième degré de liberté en translation. - Locking means comprising at least one flexible portion, arranged to lock the blocking of said degrees of freedom, by elastic deformation of said at least one flexible portion, in which the positioning means comprise a plurality of support studs (31) arranged on an exit surface of the first optical path or on an entry surface of the second optical path, and arranged to bear respectively on the entry surface of the second optical path or on the exit surface of the first optical path, so as to block at least a first degree of freedom in translation in a first direction, and in which the positioning means comprise a plurality of hooks (32b) arranged on one of the first guide portion (10) or of the second guide portion (20), so as to couple with the other of the first guide portion (10) or the second guide portion (20), so as to lock the first degree of freedom in the second direction, and to block at least a second degree of freedom in translation.
2. Guide de lumière selon la revendication précédente, dans lequel les moyens de positionnement sont agencés pour bloquer au moins cinq degrés de liberté entre la première portion de guidage (10) et la deuxième portion de guidage (20). 2. Light guide according to the preceding claim, wherein the positioning means are arranged to block at least five degrees of freedom between the first guide portion (10) and the second guide portion (20).
3. Guide de lumière selon l’une des revendication précédente, dans lequel les moyens de positionnement et les moyens de verrouillage comprennent au moins un une patte flexible (33a) agencée sur l’une de la première portion de guidage (10) ou de la deuxième portion de guidage (20), de sorte à s’accoupler avec l’autre de la première portion de guidage (10) ou de la deuxième portion de guidage (20), de sorte à bloquer au moins un troisième degré de liberté en translation et à verrouiller la première portion de guidage (10) sur la deuxième portion de guidage (20).  3. Light guide according to one of the preceding claim, wherein the positioning means and the locking means comprise at least one flexible tab (33a) arranged on one of the first guide portion (10) or the second guide portion (20), so as to couple with the other of the first guide portion (10) or the second guide portion (20), so as to block at least a third degree of freedom in translation and to lock the first guide portion (10) on the second guide portion (20).
4. Guide de lumière selon l’une des revendications précédentes, dans lequel la première portion de guidage (10) et/ou la deuxième portion de guidage (20) sont des portions de guidage minces et/ou planes  4. Light guide according to one of the preceding claims, in which the first guide portion (10) and / or the second guide portion (20) are thin and / or planar guide portions
5. Dispositif de signalisation lumineuse, tel qu’un dispositif d’indication de changement de direction et/ou de position, comprenant :  5. Light signaling device, such as a direction and / or position change indication device, comprising:
- un guide de lumière selon l’une des revendications précédentes, - a light guide according to one of the preceding claims,
- au moins une source de lumière (41 , 42) agencée pour émettre au moins une lumière de signalisation. - at least one light source (41, 42) arranged to emit at least one signaling light.
6. Dispositif de signalisation selon la revendication précédente, dans lequel ladite au moins une source de lumière (41 , 42) est fixée sur la première portion de guidage (10).  6. Signaling device according to the preceding claim, wherein said at least one light source (41, 42) is fixed on the first guide portion (10).
7. Dispositif de signalisation l’une des revendications 5 ou 6, comprenant deux sources de lumière, chacune agencée pour émettre une lumière de signalisation spécifique.  7. Signaling device one of claims 5 or 6, comprising two light sources, each arranged to emit a specific signaling light.
8. Véhicule automobile, comprenant au moins un guide de lumière selon l’une des revendications 1 à 4.  8. Motor vehicle, comprising at least one light guide according to one of claims 1 to 4.
EP19794591.8A 2018-09-27 2019-09-13 Light guide for a vehicle lighting device Active EP3857120B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1858853A FR3086729B1 (en) 2018-09-27 2018-09-27 LIGHT GUIDE OF A VEHICLE LIGHTING DEVICE
PCT/FR2019/052129 WO2020065171A1 (en) 2018-09-27 2019-09-13 Light guide for a vehicle lighting device

Publications (2)

Publication Number Publication Date
EP3857120A1 true EP3857120A1 (en) 2021-08-04
EP3857120B1 EP3857120B1 (en) 2023-01-11

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FR (1) FR3086729B1 (en)
WO (1) WO2020065171A1 (en)

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EP2438350A1 (en) * 2009-06-02 2012-04-11 Koninklijke Philips Electronics N.V. Apparatus and system for separating space
KR101594620B1 (en) * 2009-07-14 2016-02-17 엘지디스플레이 주식회사 Back light unit and liquid crystal display device having the same
JP5396498B2 (en) * 2012-03-02 2014-01-22 株式会社エス・ケー・ジー Light emitting device
DE102013008433B4 (en) * 2013-05-17 2020-12-03 Lisa Dräxlmaier GmbH Flat device for illuminating the interior of a vehicle
FR3031793B1 (en) * 2015-01-15 2017-01-27 Valeo Iluminacion Sa VEHICLE LIGHT DEVICE IN WHICH A LIGHT GUIDE SUPPORTS ANOTHER LIGHT GUIDE
FR3033621B1 (en) * 2015-03-13 2017-04-21 Valeo Iluminacion Sa LIGHT DEVICE WITH OPTICAL GUIDES
JP6599647B2 (en) * 2015-06-05 2019-10-30 株式会社小糸製作所 Vehicle lighting
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EP3857120B1 (en) 2023-01-11
CN112739952A (en) 2021-04-30
FR3086729B1 (en) 2021-04-23
WO2020065171A1 (en) 2020-04-02
CN112739952B (en) 2023-05-30
FR3086729A1 (en) 2020-04-03

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