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WO2012059852A1 - Lighting or signalling device for a motor vehicle, comprising a light guide layer - Google Patents

Lighting or signalling device for a motor vehicle, comprising a light guide layer Download PDF

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Publication number
WO2012059852A1
WO2012059852A1 PCT/IB2011/054801 IB2011054801W WO2012059852A1 WO 2012059852 A1 WO2012059852 A1 WO 2012059852A1 IB 2011054801 W IB2011054801 W IB 2011054801W WO 2012059852 A1 WO2012059852 A1 WO 2012059852A1
Authority
WO
WIPO (PCT)
Prior art keywords
web
sheet
piece
face
printed circuit
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.)
Ceased
Application number
PCT/IB2011/054801
Other languages
French (fr)
Inventor
Michel Hermitte
Nicolas Come
Jérôme Chiron
Fabrice Sagorin
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
PSA Automobiles SA
Original Assignee
Valeo Vision SAS
Peugeot Citroen 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 Valeo Vision SAS, Peugeot Citroen Automobiles SA filed Critical Valeo Vision SAS
Priority to CN201180053114.7A priority Critical patent/CN103201556B/en
Priority to EP11799315.4A priority patent/EP2635842B1/en
Publication of WO2012059852A1 publication Critical patent/WO2012059852A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • 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]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/29—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]
    • 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
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • 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 invention relates to a lighting or signaling device for a motor vehicle of the kind comprising:
  • a light guide ply having an upper and a lower face, generally parallel, a rear slice with at least one lobe, and an outlet slice,
  • At least one light source of the electroluminescent diode type, mounted on a printed circuit board, capable of injecting a light beam through one face of the guide sheet, which, by refraction and / or reflection on the faces and on the wafer, backward, gives a substantially parallel beam, emerging through the exit slice,
  • EP 2 169 296 A1 Although such a device is satisfactory, it is desirable to improve the fixing means of the guide web to maintain the homogeneity of light output of the web, and its optical performance, including avoiding creating a hole opening inside the sheet, or by avoiding creating a fixation appendix on this sheet.
  • Optical surfaces, generally flat surfaces, above and below the sheet, and parabolas at the back of the sheet should be respected, so as not to generate photometric disturbances and especially not to create disturbances at the level of the plane. homogeneity at the output of the optical part that constitutes the sheet.
  • a signaling lighting device for a motor vehicle of the kind defined above is characterized in that:
  • the means for fixing the ply comprise means for clamping the faces of the ply between an upper element against which the upper face of the ply bears, and a lower part against which the lower face bears against,
  • the signaling lighting device may also comprise positioning means between several of its different components, to ensure the appropriate relative positions between these components.
  • the upper element against which the sheet is supported can be constituted by the printed circuit board disposed above the sheet.
  • the clamping means may comprise an upper part comprising a front nose which masks the printed circuit board and ends near the web, and clamping means of the upper part and the lower part.
  • the upper part is independent of the lower part, and the clamping means comprise at least one clamping member, provided at the rear of the rear edge, to take the ply between the two pieces.
  • the clamping member may comprise at least one screw.
  • the upper and lower parts form an integral assembly, and determine a slot in which the guide sheet is mounted in a drawer.
  • the lower edge of the slot may comprise at least one elastic blade, in particular horizontal, projecting rearward, forming clamping member.
  • the elastic blade may preferably comprise a housing or pin adapted to cooperate with a pin, or housing, provided under the sheet.
  • the light source is projecting on the printed circuit board to be placed at the right of a light receiving zone, the card comprising, in the vicinity of this reception zone, protruding pins to be applied against the card of printed circuit, when tightening.
  • Pins may also be provided on the web for positioning in two orthogonal directions, corresponding to the transverse direction and the longitudinal direction of a vehicle equipped with the device.
  • the light receiving zone may be formed by a frustoconical dome whose small base is remote from the map.
  • the positioning means at the level of the web and the lower part, may comprise at least one lug or a housing provided under the lower face of the web, and at least one housing or lug provided on the lower part.
  • the positioning means may also comprise abutment members protruding from the lower part, suitable for bearing against the rear edge of the ply.
  • these abutment members bear against the rear edge of the ply, in a hollow between two parabolic lobes.
  • the stop members may be formed by cylindrical studs.
  • a radiator plate may be disposed between the printed circuit board and the top plate.
  • Another object of the invention is a vehicle comprising a device lighting and / or signaling according to the present invention.
  • Fig. 1 is an exploded perspective view of a lighting or signaling device according to a first embodiment of the invention.
  • Fig. 2 shows in perspective the assembled device of FIG. 1.
  • Fig. 3 is a vertical section, on a larger scale, along the line III-III of FIG. 2.
  • Fig. 4 is a vertical section, similar to that of FIG. 3, illustrating an alternative embodiment.
  • Fig. 5 is a partial view from above of the guide ply of FIG. 1 disposed on the lower part.
  • Fig. 6 is an exploded perspective view, similar to FIG. 1, an alternative embodiment.
  • Fig. 7 is a section, on a larger scale, along the line VII-VII of FIG. 6 of the assembled device, and
  • Fig. 8 is a perspective front view of the device of FIG. 6 assembled.
  • a lighting or signaling device A for a motor vehicle which comprises a guide sheet 1 for the light, in a transparent material, having an upper face 1a and a lower face 1b generally parallel.
  • These faces 1a, 1b in the illustrated example are planar but could have a curved shape as disclosed in EP 1 881 263.
  • the web 1 comprises a rear slice 1 c and an output slice 1 d at the front.
  • the device A may be at the front of a vehicle, in which case the output wafer 1 d is located in front of the rear wafer 1 c according to the direction of movement of the vehicle towards the front.
  • the output wafer 1 d is behind the wafer 1 c in the normal direction of travel of the vehicle.
  • the rear slice 1c comprises at least one lobe 2 and, in the case present, several lobes 2, 2.1, 2.2, 2.3, 2.4 convex backwards with parabolic outline.
  • the vertical section of the slice 1c may be in the form of a dihedral whose tip is turned towards the rear.
  • the lighting device A comprises at least one light source 3, schematically represented in FIG. 3, of the light-emitting diode type, mounted on a PCB printed circuit board arranged, in the examples shown, above the sheet 1.
  • the electroluminescent diode 3 protrudes under the underside of the card B and is capable of injecting a light beam through the upper face of the sheet 1, which, by refraction and / or reflection on its faces and on the rear edge, gives a essentially parallel beam emerging through the output wafer 1 d.
  • the card B supports four light-emitting diodes arranged below this card and intended to come, when the device A is assembled (see FIG. 3), in line with protuberances 4 in the form of frustoconical domes, of which the small base is turned upwards.
  • the domes 4 are located on the upper face of the sheet 1 for the injection of light into this sheet.
  • the domes 4 (Fig.5) are provided towards the rear edge of the lobes 2.2.1, 2.2, 2.3.
  • Pions 5a are provided in the vicinity of the domes 4 at the upper surface of the web 1 to serve as a support for the printed circuit board B as illustrated in FIG. 3, maintaining a determined distance between each light emitting diode 3 and the upper surface of the dome 4.
  • Lugs 5x, 5y (Fig.5) are also provided on the web 1 for positioning in two orthogonal horizontal directions x, y.
  • Fixing means F of the guide web in a support D and means P for indexing and positioning the various components of the device A are provided:
  • the fixing means F of the ply 1 comprise clamping means S of the faces 1a, 1b of the ply between an upper member 6 against which the upper face 1a of the ply bears against a lower piece 7 against which abuts the lower face 1b of the web.
  • the upper element 6 is formed by the PCB B circuit.
  • Positioning means P are provided between the lower part 7 and the sheet 1, as well as between the various components of the device to ensure appropriate relative positions between the components in the assembled device.
  • the positioning means P comprise, between the lower part 7 and the sheet 1, at least one lug 8 provided under the lower face of the sheet 1 and at least one corresponding housing 9 on the lower part 7 forming a support D; the cooperation of the lug 8 and the housing 9 ensures at least the retention of the web 1 forward as shown in FIG. 3.
  • Ribs 10 spaced, obliquely oriented according to the example of FIG. 1, are provided projecting on the upper surface of the lower part 7 to serve as a support for the lower face of the sheet 1, as shown in FIG. 3.
  • the inclination of the ribs 10 with respect to the direction orthogonal to the large dimension of the part 7 is favorable to the demolding of this piece advantageously made of plastic.
  • Each protruding zone formed by a rib 10 is further away from the rear edge 1c of the ply than the bearing pieces 5a of the upper face of the ply.
  • the positioning means P further comprise, in the example under consideration (see FIG 5), two studs 1 1 projecting on the upper face of the lower piece 7, at the rear of the latter, suitable for bearing against the rear edge 1 c of the web 1 in a hollow between two parabolic lobes 2, 2.1, 2.3, 2.4.
  • the studs 1 1 exert the retention towards the rear of the sheet 1 by bearing on the faces of the parabolas.
  • the lighting device may comprise, as illustrated in Figs. 1 -3, a radiator 12 in the form of a metal plate, matching the outline of the circuit board B.
  • the device may comprise thermal screws 6a, 6b screwing into the radiator, to clamp the radiator on the card B. These screws can also serve as a mass for the electronic part.
  • the positioning means P, for the stacking of the card B and the radiator 12 on the sheet 1, comprise two oblique pins 13 projecting on the upper face of the sheet 1, adapted to engage in oblong openings 14, 15 also oblique, provided respectively in the card B and in the radiator 12.
  • the lower face of the card presses the pins 5a which determine the height position of the sheet 1, in the vertical direction z.
  • the stud 5x which may be in the form of a cross, projecting from the upper surface of the sheet 1, is provided to ensure the position in the x direction (direction orthogonal to the longitudinal plane of the vehicle equipped with the lighting device ) of the card B which comprises a conjugated pin 6x projecting under the underside of the card to cooperate with the pin 5x.
  • a pin 6y provided on the card B and projecting below this card can cooperate with the lug 5y, also in the form of a cross, to ensure the stop in the direction y (longitudinal direction of the vehicle on which is installed the lighting device).
  • the upper element of the device A is constituted by an upper part 16 provided forwards with a spout 17 or flange directed downwards.
  • the sheet 1 projects forwardly beyond the upper part 6 and the spout 17.
  • the upper part 16 is independent of the lower part 7 and the clamping means S between the two parts comprise two clamping screws 18 adapted to pass through holes 19 provided in the part 16 and able to bear against the edge a cavity 20 of the upper face of the part 16.
  • the screws 18 pass through holes 21, 22 respectively provided in the radiator and in the card B to screw, preferably by self-tapping, into holes provided in the studs January 1.
  • the screws 18 are located at the rear of the rear edge 1c of the ply and the tightening of these screws makes it possible to take the ply between the lower piece 7 and the upper piece 16 which exerts its pressure via the radiator 12 and the card B. If necessary, according to the thermal specificity of the printed circuit board B, the radiator 12 could be omitted.
  • the upper part 16 may comprise in its central front part a window 23 allowing in particular a circulation of air for evacuation of the heat.
  • the spout 17 comes, by its lower part, in the vicinity of the upper face of the ply 1, without exerting a tightening on this sheet.
  • the clearance between the lower part of the spout 17 and the sheet 1 is sufficiently reduced, in particular of the order of 0.2 mm, to hide the inside of the space comprising the plate B and the diodes 3 to the view from the front of the tablecloth 1.
  • clamping means constituted by the screws 18 could be replaced by equivalent means, in particular clips.
  • the upper part 16 could be removed and the screws 18 would directly support the radiator 12 or PCB B circuit in the absence of radiator.
  • the lug 8 provided under this ply may be sufficient to cooperate with a housing 9 such that the retention of the ply 1 is ensured forwards and backwards. , in which case it is not necessary to provide a stop of the rear edge 1 c against pads 1 1.
  • the use of the rear studs 1 1 is advantageous.
  • the sheet 1 is placed on the lower part 7, which serves as a support, being positioned by cooperation of the lug 8 and the housing 9, and by the support of the rear edge of the sheet against the pads 1 1 .
  • the card B with the radiator 12, is then installed on the sheet 1 being guided by the oblique pins 13, engaged in the oblong openings 14, 15 of the card and the radiator.
  • the position of the card B is ensured precisely by pressing on the pins 5a, and cooperation of the positioning pins 5x, 5y, and pins 6x, 6y.
  • the light-emitting diodes 3 are positioned accurately above the domes 4 of light entry into the sheet.
  • the upper piece 16 is then put in place and fixed with the screws 18 which make it possible to exert the tightening of the faces of the sheet 1 without creating stresses on the sensitive optical surfaces.
  • the lower part 7 ' has a lug 8' projecting on its upper face, while the ply 1 'has, on its underside, a housing 9' formed by a non-through hole, adapted to receive the lug 8 'with a reduced play so that the cooperation of this lug 8' with the housing 9 'provides retention towards the front and rear of the web 1' relative to the lower part 7 '.
  • retaining studs 11 may be provided at the rear of the ply 1 'as illustrated in FIG. 4, similarly to the embodiment of FIGS. 1 -3.
  • the housing 9 cooperates, according to FIG. 4, with a pin 8 'coming out of the lower piece 7' of support.
  • a pin 8 'coming out of the lower piece 7' of support.
  • the housing corresponding to the hole 9' of the upper ply can cooperate with a pin provided on the upper face of a lower ply. . It is thus possible to index several stacked guiding layers.
  • the guide ply 1 'of FIG. 4 is clamped between the lower support part 7 'and the upper part 16 with the interposition of the printed circuit board B and, if appropriate, the radiator 12.
  • FIG. 6 to 8 we can see an alternative embodiment of the lighting device according to which the upper piece 16 "and the lower piece 7" are in one piece and form an assembly piece 24 by determining a slot 25 in which the guide web 1 can be mounted in drawer being engaged from the back to the front.
  • the lower edge of the slot 25 comprises, according to the example of FIG. 6, two horizontal resilient blades 26, spaced transversely, projecting rearwardly.
  • Each blade 26 comprises a hooking member constituted by a hole 27 in the example of FIG. 7 adapted to cooperate with a complementary member, namely a pin 28 provided under the sheet 1.
  • a complementary member namely a pin 28 provided under the sheet 1.
  • the elastic strips 26 furthermore form a clamping member of the ply 1 against the upper part 16 "of the piece 24, with the interposition of the printed circuit board B and possibly a radiator 12.
  • the lighting device makes it possible to index and fix the optical part constituted by the guide ply 1, 1 'while keeping the homogeneity of light at the output of optical parts. and its optical performance, without creating holes leading into sensitive areas inside the room, and without creating attachment appendages on the optical part.
  • the proposed device allows:

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Planar Illumination Modules (AREA)
  • Fastening Of Light Sources Or Lamp Holders (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Abstract

Lighting or signalling device for a motor vehicle comprising: a light guide layer (1) having a top face (1a) and a bottom face (1b), a rear edge (1c) with at least one lobe and an output edge (1d); at least one light-emitting diode (3), mounted on a printed circuit board (B) capable of injecting a beam of light via one face of the guide layer which, by refraction and/or reflection on the faces and on the rear edge, yields an essentially parallel beam, emerging via the output edge (1d); means (F) of fixing the guide layer (1, 1') into a support (D), which means comprise means (S) of clamping the faces (1a, 1b) of the layer between a top element (6) against which the top face (1a) of the layer bears and a bottom component (7) against which the bottom face (1b) bears, while positioning means (P) are provided between the bottom element (7, 7', 7") and the layer (1) and between the various components (6,12) of the device (A).

Description

DISPOSITIF D'ECLAIRAGE OU DE SIGNALISATION, POUR VEHICULE AUTOMOBILE, COMPORTANT UNE NAPPE DE GUIDAGE DE LUMIERE.  LIGHTING OR SIGNALING DEVICE FOR A MOTOR VEHICLE HAVING A LIGHT GUIDE RAIL.

L'invention est relative à un dispositif d'éclairage ou de signalisation pour véhicule automobile du genre de ceux qui comportent : The invention relates to a lighting or signaling device for a motor vehicle of the kind comprising:

- une nappe de guidage de lumière présentant une face supérieure et une face inférieure, généralement parallèles, une tranche arrière avec au moins un lobe, et une tranche de sortie,  a light guide ply having an upper and a lower face, generally parallel, a rear slice with at least one lobe, and an outlet slice,

- au moins une source lumineuse, du type diode électroluminescente, montée sur une carte de circuit imprimé, propre à injecter un faisceau lumineux par une face de la nappe de guidage, laquelle, par réfraction et/ou réflexion sur les faces et sur la tranche arrière, donne un faisceau essentiellement parallèle, émergeant par la tranche de sortie,  at least one light source, of the electroluminescent diode type, mounted on a printed circuit board, capable of injecting a light beam through one face of the guide sheet, which, by refraction and / or reflection on the faces and on the wafer, backward, gives a substantially parallel beam, emerging through the exit slice,

- des moyens de fixation de la nappe de guidage dans un support.  - Means for fixing the guide web in a support.

Des dispositifs de ce genre sont connus, notamment par le document Devices of this kind are known, in particular by the document

EP 2 169 296 A1 . Bien qu'un tel dispositif donne satisfaction, il est souhaitable d'améliorer les moyens de fixation de la nappe de guidage pour conserver l'homogénéité de lumière en sortie de la nappe, et sa prestation optique, notamment en évitant de créer un trou débouchant à l'intérieur de la nappe, ou en évitant de créer un appendice de fixation sur cette nappe. Il convient en effet de respecter les surfaces optiques, généralement surfaces planes, dessus et dessous de la nappe, et paraboles à l'arrière de la nappe, pour ne pas générer de perturbations photométriques et surtout pour ne pas créer de perturbations au niveau de l'homogénéité en sortie de la pièce optique que constitue la nappe. EP 2 169 296 A1. Although such a device is satisfactory, it is desirable to improve the fixing means of the guide web to maintain the homogeneity of light output of the web, and its optical performance, including avoiding creating a hole opening inside the sheet, or by avoiding creating a fixation appendix on this sheet. Optical surfaces, generally flat surfaces, above and below the sheet, and parabolas at the back of the sheet should be respected, so as not to generate photometric disturbances and especially not to create disturbances at the level of the plane. homogeneity at the output of the optical part that constitutes the sheet.

Selon l'invention, un dispositif d'éclairage de signalisation pour véhicule automobile du genre défini précédemment est caractérisé en ce que : According to the invention, a signaling lighting device for a motor vehicle of the kind defined above is characterized in that:

- les moyens de fixation de la nappe comprennent des moyens de serrage des faces de la nappe entre un élément supérieur contre lequel vient en appui la face supérieure de la nappe, et une pièce inférieure contre laquelle vient en appui la face inférieure, the means for fixing the ply comprise means for clamping the faces of the ply between an upper element against which the upper face of the ply bears, and a lower part against which the lower face bears against,

- et des moyens de positionnement sont prévus entre la pièce inférieure et la nappe.  and positioning means are provided between the lower piece and the sheet.

Le dispositif d'éclairage de signalisation selon l'invention peut également comprendre des moyens de positionnement entre plusieurs de ses différents composants, pour assurer les positions relatives appropriées entre ces composants.  The signaling lighting device according to the invention may also comprise positioning means between several of its different components, to ensure the appropriate relative positions between these components.

L'élément supérieur contre lequel vient en appui la nappe peut être constitué par la carte de circuit imprimé disposée au-dessus de la nappe. The upper element against which the sheet is supported can be constituted by the printed circuit board disposed above the sheet.

Les moyens de serrage peuvent comprendre une pièce supérieure comportant un bec avant qui masque la carte de circuit imprimé et se termine à proximité de la nappe, et des moyens de serrage de la pièce supérieure et de la pièce inférieure.  The clamping means may comprise an upper part comprising a front nose which masks the printed circuit board and ends near the web, and clamping means of the upper part and the lower part.

Avantageusement, la pièce supérieure est indépendante de la pièce inférieure, et les moyens de serrage comprennent au moins un organe de serrage, prévu à l'arrière de la tranche arrière, pour prendre la nappe en tenaille entre les deux pièces. L'organe de serrage peut comprendre au moins une vis.  Advantageously, the upper part is independent of the lower part, and the clamping means comprise at least one clamping member, provided at the rear of the rear edge, to take the ply between the two pieces. The clamping member may comprise at least one screw.

Selon une variante, les pièces supérieure et inférieure forment un ensemble d'un seul tenant, et déterminent une fente dans laquelle la nappe de guidage est montée en tiroir.  According to a variant, the upper and lower parts form an integral assembly, and determine a slot in which the guide sheet is mounted in a drawer.

Le bord inférieur de la fente peut comporter au moins une lame élastique, notamment horizontale, en saillie vers l'arrière, formant organe de serrage. La lame élastique peut préférentiellement comporter un logement ou pion, propre à coopérer avec un pion, ou logement, prévu sous la nappe.  The lower edge of the slot may comprise at least one elastic blade, in particular horizontal, projecting rearward, forming clamping member. The elastic blade may preferably comprise a housing or pin adapted to cooperate with a pin, or housing, provided under the sheet.

Généralement, la source lumineuse est en saillie sur la carte du circuit imprimé pour être placée au droit d'une zone de réception de lumière, la carte comportant au voisinage de cette zone de réception des pions en saillie pour s'appliquer contre la carte de circuit imprimé, lors du serrage. Des ergots peuvent également être prévus sur la nappe pour le positionnement selon deux directions orthogonales, correspondant à la direction transversale et à la direction longitudinale d'un véhicule équipé du dispositif.  Generally, the light source is projecting on the printed circuit board to be placed at the right of a light receiving zone, the card comprising, in the vicinity of this reception zone, protruding pins to be applied against the card of printed circuit, when tightening. Pins may also be provided on the web for positioning in two orthogonal directions, corresponding to the transverse direction and the longitudinal direction of a vehicle equipped with the device.

La zone de réception de lumière peut être formée par un dôme tronconique dont la petite base est éloignée de la carte.  The light receiving zone may be formed by a frustoconical dome whose small base is remote from the map.

Les moyens de positionnement, au niveau de la nappe et de la pièce inférieure, peuvent comprendre au moins un ergot ou un logement prévu sous la face inférieure de la nappe, et au moins un logement ou ergot prévu sur la pièce inférieure.  The positioning means, at the level of the web and the lower part, may comprise at least one lug or a housing provided under the lower face of the web, and at least one housing or lug provided on the lower part.

Les moyens de positionnement peuvent également comprendre des organes de butée, en saillie sur la pièce inférieure, propres à venir en appui contre la tranche arrière de la nappe. Préférentiellement, ces organes de butée sont en appui contre la tranche arrière de la nappe, dans un creux entre deux lobes paraboliques. Les organes de butée peuvent être formés par des plots cylindriques.  The positioning means may also comprise abutment members protruding from the lower part, suitable for bearing against the rear edge of the ply. Preferably, these abutment members bear against the rear edge of the ply, in a hollow between two parabolic lobes. The stop members may be formed by cylindrical studs.

Une plaque radiateur peut être disposée entre la carte de circuit imprimé, et la plaque supérieure.  A radiator plate may be disposed between the printed circuit board and the top plate.

Un autre objet de l'invention est un véhicule comprenant un dispositif d'éclairage et/ou de signalisation selon la présente invention. Another object of the invention is a vehicle comprising a device lighting and / or signaling according to the present invention.

L'invention peut comprendre, mises à part les dispositions exposées ci-dessus, en un certain nombre d'autres dispositions dont il sera plus explicitement question ci-après à propos d'exemples de réalisation décrits avec référence aux dessins annexés, mais qui ne sont nullement limitatifs. Sur ces dessins :  The invention may include, apart from the arrangements set out above, a number of other arrangements which will be more explicitly discussed below with respect to embodiments described with reference to the accompanying drawings, but which do not are in no way limiting. On these drawings:

Fig. 1 est une vue en perspective éclatée d'un dispositif d'éclairage ou de signalisation selon un premier mode de réalisation de l'invention.  Fig. 1 is an exploded perspective view of a lighting or signaling device according to a first embodiment of the invention.

Fig. 2 montre en perspective le dispositif assemblé de Fig. 1 . Fig. 3 est une coupe verticale, à plus grande échelle, suivant la ligne lll-lll de Fig. 2.  Fig. 2 shows in perspective the assembled device of FIG. 1. Fig. 3 is a vertical section, on a larger scale, along the line III-III of FIG. 2.

Fig. 4 est une coupe verticale, semblable à celle de Fig. 3, illustrant une variante de réalisation.  Fig. 4 is a vertical section, similar to that of FIG. 3, illustrating an alternative embodiment.

Fig. 5 est une vue partielle de dessus de la nappe de guidage de Fig. 1 disposée sur la pièce inférieure.  Fig. 5 is a partial view from above of the guide ply of FIG. 1 disposed on the lower part.

Fig. 6 est une vue en perspective éclatée, semblable à Fig. 1 , d'une variante de réalisation.  Fig. 6 is an exploded perspective view, similar to FIG. 1, an alternative embodiment.

Fig. 7 est une coupe, à plus grande échelle, suivant la ligne VII-VII de Fig. 6 du dispositif assemblé, et  Fig. 7 is a section, on a larger scale, along the line VII-VII of FIG. 6 of the assembled device, and

Fig. 8 est une vue de face en perspective du dispositif de Fig. 6 assemblé.  Fig. 8 is a perspective front view of the device of FIG. 6 assembled.

Toutes les expressions du type "avant", "arrière", etc., utilisées dans la description et les revendications sont à comprendre pour un dispositif d'éclairage ou de signalisation fixé sur un véhicule.  All expressions of the type "front", "rear", etc., used in the description and the claims are to be understood for a lighting or signaling device attached to a vehicle.

En se reportant aux dessins, notamment à Fig. 1 , on peut voir un dispositif d'éclairage ou de signalisation A pour véhicule automobile qui comporte une nappe de guidage 1 pour la lumière, en une matière transparente, présentant une face supérieure 1 a et une face inférieure 1 b généralement parallèles. Ces faces 1 a, 1 b dans l'exemple illustré sont planes mais pourraient avoir une forme incurvée comme exposé dans EP 1 881 263. Referring to the drawings, especially Figs. 1, we can see a lighting or signaling device A for a motor vehicle which comprises a guide sheet 1 for the light, in a transparent material, having an upper face 1a and a lower face 1b generally parallel. These faces 1a, 1b in the illustrated example are planar but could have a curved shape as disclosed in EP 1 881 263.

La nappe 1 comporte une tranche arrière 1 c et une tranche de sortie 1 d à l'avant. The web 1 comprises a rear slice 1 c and an output slice 1 d at the front.

Le dispositif A peut se trouver à l'avant d'un véhicule, auquel cas la tranche de sortie 1 d est située en avant de la tranche arrière 1 c suivant le sens de déplacement du véhicule vers l'avant. Lorsque le dispositif A est disposé à l'arrière d'un véhicule, la tranche de sortie 1 d se trouve en arrière de la tranche 1 c selon le sens de déplacement normal du véhicule.  The device A may be at the front of a vehicle, in which case the output wafer 1 d is located in front of the rear wafer 1 c according to the direction of movement of the vehicle towards the front. When the device A is disposed at the rear of a vehicle, the output wafer 1 d is behind the wafer 1 c in the normal direction of travel of the vehicle.

La tranche arrière 1 c comporte au moins un lobe 2 et, dans le cas présent, plusieurs lobes 2, 2.1 , 2.2, 2.3, 2.4 convexes vers l'arrière à contour parabolique. Comme visible sur Fig. 3, la section verticale de la tranche 1 c peut avoir la forme d'un dièdre dont la pointe est tournée vers l'arrière. The rear slice 1c comprises at least one lobe 2 and, in the case present, several lobes 2, 2.1, 2.2, 2.3, 2.4 convex backwards with parabolic outline. As shown in Fig. 3, the vertical section of the slice 1c may be in the form of a dihedral whose tip is turned towards the rear.

Le dispositif d'éclairage A comprend au moins une source lumineuse 3, schématiquement représentée sur Fig. 3, du type diode électroluminescente, montée sur une carte B de circuit imprimé disposée, dans les exemples représentés, au-dessus de la nappe 1 . La diode électroluminescente 3 fait saillie sous la face inférieure de la carte B et est propre à injecter un faisceau lumineux par la face supérieure de la nappe 1 , laquelle, par réfraction et/ou réflexion sur ses faces et sur la tranche arrière, donne un faisceau essentiellement parallèle émergeant par la tranche de sortie 1 d.  The lighting device A comprises at least one light source 3, schematically represented in FIG. 3, of the light-emitting diode type, mounted on a PCB printed circuit board arranged, in the examples shown, above the sheet 1. The electroluminescent diode 3 protrudes under the underside of the card B and is capable of injecting a light beam through the upper face of the sheet 1, which, by refraction and / or reflection on its faces and on the rear edge, gives a essentially parallel beam emerging through the output wafer 1 d.

Selon l'exemple de Fig. 1 , la carte B supporte quatre diodes électroluminescentes disposées au-dessous de cette carte et destinées à venir, lorsque le dispositif A est assemblé (voir Fig.3), à l'aplomb de protubérances 4 en forme de dômes tronconiques, dont la petite base est tournée vers le haut. Les dômes 4 sont situés sur la face supérieure de la nappe 1 pour l'injection de lumière dans cette nappe. Les dômes 4 (Fig.5) sont prévus vers la tranche arrière des lobes 2,2.1 , 2.2, 2.3. Des pions 5a sont prévus au voisinage des dômes 4, à la surface supérieure de la nappe 1 pour servir d'appui à la carte B de circuit imprimé comme illustré sur Fig. 3, en maintenant une distance déterminée entre chaque diode électroluminescente 3 et la surface supérieure du dôme 4. Des ergots 5x, 5y (Fig.5) sont également prévus sur la nappe 1 pour le positionnement selon deux directions horizontales orthogonales x, y.  According to the example of FIG. 1, the card B supports four light-emitting diodes arranged below this card and intended to come, when the device A is assembled (see FIG. 3), in line with protuberances 4 in the form of frustoconical domes, of which the small base is turned upwards. The domes 4 are located on the upper face of the sheet 1 for the injection of light into this sheet. The domes 4 (Fig.5) are provided towards the rear edge of the lobes 2.2.1, 2.2, 2.3. Pions 5a are provided in the vicinity of the domes 4 at the upper surface of the web 1 to serve as a support for the printed circuit board B as illustrated in FIG. 3, maintaining a determined distance between each light emitting diode 3 and the upper surface of the dome 4. Lugs 5x, 5y (Fig.5) are also provided on the web 1 for positioning in two orthogonal horizontal directions x, y.

Des moyens de fixation F de la nappe de guidage dans un support D et des moyens P d'indexation et de positionnement des différents composants du dispositif A sont prévus :  Fixing means F of the guide web in a support D and means P for indexing and positioning the various components of the device A are provided:

- pour respecter les surfaces optiques de la nappe de guidage 1 , en particulier paraboles arrière et surfaces planes dessus, dessous,  to respect the optical surfaces of the guide ply 1, in particular rear parabolas and flat surfaces above, below,

- pour ne pas générer de pertubations photométriques, - not to generate photometric disturbances,

- et surtout pour ne pas créer de perturbations au niveau de l'homogénéité en sortie de la nappe de guidage.  - And especially not to create disturbances in the homogeneity at the output of the guide web.

Pour cela, selon l'invention, on prévoit :  For this, according to the invention, provision is made for:

- de ne pas faire de trous traversant l'épaisseur matière de la nappe de guidage 1 ;  - Do not make holes through the material thickness of the guide web 1;

- de ne pas créer d'appendices, par rajout de matière, à l'arrière de la nappe de guidage 1 , en particulier au niveau de la tranche arrière 1 c et des lobes ;  - Do not create appendices, by adding material, to the rear of the guide web 1, in particular at the rear edge 1 c and lobes;

- de ne pas ajouter d'appendices de matière sur les côtés de la nappe de guidage 1 en raison d'un manque de volume dans le projecteur optique associé et d'un surcoût de matière au niveau de la nappe de guidage. - not to add material appendages on the sides of the tablecloth guidance 1 due to a lack of volume in the associated optical projector and an additional cost of material at the guide web.

Les moyens de fixation F de la nappe 1 comprennent des moyens de serrage S des faces 1 a, 1 b de la nappe entre un élément supérieur 6 contre lequel vient en appui la face supérieure 1 a de la nappe et une pièce inférieure 7 contre laquelle vient en appui la face inférieure 1 b de la nappe. Dans l'exemple représenté, l'élément supérieur 6 est formé par la carte B de circuit imprimé.  The fixing means F of the ply 1 comprise clamping means S of the faces 1a, 1b of the ply between an upper member 6 against which the upper face 1a of the ply bears against a lower piece 7 against which abuts the lower face 1b of the web. In the example shown, the upper element 6 is formed by the PCB B circuit.

Des moyens de positionnement P sont prévus entre la pièce inférieure 7 et la nappe 1 , ainsi qu'entre les différents composants du dispositif pour assurer des positions relatives appropriées entre les composants dans le dispositif assemblé.  Positioning means P are provided between the lower part 7 and the sheet 1, as well as between the various components of the device to ensure appropriate relative positions between the components in the assembled device.

Les moyens de positionnement P, selon le mode de réalisation des Figs. 1 -3, comprennent, entre la pièce inférieure 7 et la nappe 1 , au moins un ergot 8 prévu sous la face inférieure de la nappe 1 et au moins un logement correspondant 9 sur la pièce inférieure 7 formant support D ; la coopération de l'ergot 8 et du logement 9 assure au moins la retenue de la nappe 1 vers l'avant comme illustré sur Fig. 3.  The positioning means P, according to the embodiment of Figs. 1 -3, comprise, between the lower part 7 and the sheet 1, at least one lug 8 provided under the lower face of the sheet 1 and at least one corresponding housing 9 on the lower part 7 forming a support D; the cooperation of the lug 8 and the housing 9 ensures at least the retention of the web 1 forward as shown in FIG. 3.

Des nervures 10 espacées, orientées en oblique selon l'exemple de Fig. 1 , sont prévues en saillie sur la surface supérieure de la pièce inférieure 7 pour servir d'appui à la face inférieure de la nappe 1 , comme illustré sur Fig. 3. L'inclinaison des nervures 10 par rapport à la direction orthogonale à la grande dimension de la pièce 7 est favorable au démoulage de cette pièce réalisée avantageusement en matière plastique.  Ribs 10 spaced, obliquely oriented according to the example of FIG. 1, are provided projecting on the upper surface of the lower part 7 to serve as a support for the lower face of the sheet 1, as shown in FIG. 3. The inclination of the ribs 10 with respect to the direction orthogonal to the large dimension of the part 7 is favorable to the demolding of this piece advantageously made of plastic.

Chaque zone en saillie, formée par une nervure 10, est plus éloignée de la tranche arrière 1 c de la nappe que les pions d'appui 5a de la face supérieure de la nappe.  Each protruding zone formed by a rib 10 is further away from the rear edge 1c of the ply than the bearing pieces 5a of the upper face of the ply.

Les moyens de positionnement P comprennent en outre, dans l'exemple considéré (voir Fig. 5), deux plots 1 1 en saillie sur la face supérieure de la pièce inférieure 7, à l'arrière de cette dernière, propres à venir en appui contre la tranche arrière 1 c de la nappe 1 dans un creux entre deux lobes paraboliques 2, 2.1 , 2.3, 2.4. Les plots 1 1 exercent la retenue vers l'arrière de la nappe 1 en portant sur les faces des paraboles.  The positioning means P further comprise, in the example under consideration (see FIG 5), two studs 1 1 projecting on the upper face of the lower piece 7, at the rear of the latter, suitable for bearing against the rear edge 1 c of the web 1 in a hollow between two parabolic lobes 2, 2.1, 2.3, 2.4. The studs 1 1 exert the retention towards the rear of the sheet 1 by bearing on the faces of the parabolas.

Le dispositif d'éclairage peut comporter, comme illustré sur Figs. 1 -3, un radiateur 12 sous forme de plaque métallique, épousant le contour de la carte B de circuit imprimé. De manière non limitative, le dispositif peut comprendre des vis thermiques 6a, 6b se vissant dans le radiateur, pour maintenir par serrage le radiateur sur la carte B. Ces vis peuvent aussi servir de masse pour la partie électronique. Les moyens de positionnement P , pour l'empilage de la carte B et du radiateur 12 sur la nappe 1 , comprennent deux pions 13 obliques faisant saillie sur la face supérieure de la nappe 1 , propres à s'engager dans des ouvertures oblongues 14, 15 également obliques, prévues respectivement dans la carte B et dans le radiateur 12. The lighting device may comprise, as illustrated in Figs. 1 -3, a radiator 12 in the form of a metal plate, matching the outline of the circuit board B. Without limitation, the device may comprise thermal screws 6a, 6b screwing into the radiator, to clamp the radiator on the card B. These screws can also serve as a mass for the electronic part. The positioning means P, for the stacking of the card B and the radiator 12 on the sheet 1, comprise two oblique pins 13 projecting on the upper face of the sheet 1, adapted to engage in oblong openings 14, 15 also oblique, provided respectively in the card B and in the radiator 12.

A la fin de la mise en place de la carte B sur la nappe 1 , la face inférieure de la carte appuie sur les pions 5a qui déterminent la position en hauteur de la nappe 1 , suivant la direction verticale z.  At the end of the introduction of the card B on the sheet 1, the lower face of the card presses the pins 5a which determine the height position of the sheet 1, in the vertical direction z.

L'ergot 5x, qui peut avoir la forme d'une croix, en saillie sur la surface supérieure de la nappe 1 , est prévu pour assurer la position suivant la direction x (direction orthogonale au plan longitudinal du véhicule équipé du dispositif d'éclairage) de la carte B qui comporte un pion conjugué 6x faisant saillie sous la face inférieure de la carte pour coopérer avec l'ergot 5x. Un pion 6y prévu sur la carte B et faisant saillie au-dessous de cette carte peut coopérer avec l'ergot 5y, également en forme de croix, pour assurer l'arrêt suivant la direction y (direction longitudinale du véhicule sur lequel est installé le dispositif d'éclairage).  The stud 5x, which may be in the form of a cross, projecting from the upper surface of the sheet 1, is provided to ensure the position in the x direction (direction orthogonal to the longitudinal plane of the vehicle equipped with the lighting device ) of the card B which comprises a conjugated pin 6x projecting under the underside of the card to cooperate with the pin 5x. A pin 6y provided on the card B and projecting below this card can cooperate with the lug 5y, also in the form of a cross, to ensure the stop in the direction y (longitudinal direction of the vehicle on which is installed the lighting device).

L'élément supérieur du dispositif A est constitué par une pièce supérieure 16 munie vers l'avant d'un bec 17 ou rebord dirigé vers le bas. La nappe 1 fait saillie vers l'avant au-delà de la pièce supérieure 6 et du bec 17.  The upper element of the device A is constituted by an upper part 16 provided forwards with a spout 17 or flange directed downwards. The sheet 1 projects forwardly beyond the upper part 6 and the spout 17.

Selon la réalisation des Figs. 1 -4, la pièce supérieure 16 est indépendante de la pièce inférieure 7 et les moyens de serrage S entre les deux pièces comprennent deux vis de serrage 18 propres à traverser des trous 19 prévus dans la pièce 16 et propres à prendre appui contre le bord d'une cavité 20 de la face supérieure de la pièce 16.  According to the embodiment of Figs. 1 -4, the upper part 16 is independent of the lower part 7 and the clamping means S between the two parts comprise two clamping screws 18 adapted to pass through holes 19 provided in the part 16 and able to bear against the edge a cavity 20 of the upper face of the part 16.

Comme visible sur Fig. 3, les vis 18 traversent des trous 21 , 22 prévus respectivement dans le radiateur et dans la carte B pour se visser, de préférence par autotaraudage, dans des trous prévus dans les plots 1 1 . Les vis 18 se trouvent à l'arrière de la tranche arrière 1 c de la nappe et le serrage de ces vis permet de prendre la nappe en tenaille entre la pièce inférieure 7 et la pièce supérieure 16 qui exerce sa pression par l'intermédiaire du radiateur 12 et de la carte B. Le cas échéant, selon la spécificité thermique de la carte B de circuit imprimé, le radiateur 12 pourrait être omis.  As shown in Fig. 3, the screws 18 pass through holes 21, 22 respectively provided in the radiator and in the card B to screw, preferably by self-tapping, into holes provided in the studs January 1. The screws 18 are located at the rear of the rear edge 1c of the ply and the tightening of these screws makes it possible to take the ply between the lower piece 7 and the upper piece 16 which exerts its pressure via the radiator 12 and the card B. If necessary, according to the thermal specificity of the printed circuit board B, the radiator 12 could be omitted.

La pièce supérieure 16 peut comporter dans sa partie centrale avant une fenêtre 23 permettant notamment une circulation d'air pour évacuation de la chaleur.  The upper part 16 may comprise in its central front part a window 23 allowing in particular a circulation of air for evacuation of the heat.

Le bec 17 vient, par sa partie inférieure, au voisinage de la face supérieure de la nappe 1 , sans toutefois exercer un serrage sur cette nappe. Le jeu entre la partie inférieure du bec 17 et la nappe 1 est suffisamment réduit, notamment de l'ordre de 0.2 mm, pour masquer l'intérieur de l'espace comportant la plaque B et les diodes 3 à la vue depuis l'avant de la nappe 1 . The spout 17 comes, by its lower part, in the vicinity of the upper face of the ply 1, without exerting a tightening on this sheet. The clearance between the lower part of the spout 17 and the sheet 1 is sufficiently reduced, in particular of the order of 0.2 mm, to hide the inside of the space comprising the plate B and the diodes 3 to the view from the front of the tablecloth 1.

Les moyens de serrage constitués par les vis 18 pourraient être remplacés par des moyens équivalents, notamment des clips.  The clamping means constituted by the screws 18 could be replaced by equivalent means, in particular clips.

Le cas échéant, la pièce supérieure 16 pourrait être supprimée et les vis 18 appuieraient directement sur le radiateur 12 ou sur la carte B à circuit imprimé en cas d'absence de radiateur.  If necessary, the upper part 16 could be removed and the screws 18 would directly support the radiator 12 or PCB B circuit in the absence of radiator.

En fonction de l'angle de démoulage de la nappe de guidage 1 , l'ergot 8 prévu sous cette nappe peut être suffisant pour coopérer avec un logement 9 tel que la retenue de la nappe 1 soit assurée vers l'avant et l'arrière, auquel cas il n'est pas nécessaire de prévoir une butée de la tranche arrière 1 c contre des plots 1 1 . Toutefois, dans le cas d'un démoulage où les surfaces de contact ne sont pas franches, le recours aux plots arrière 1 1 est avantageux.  Depending on the demolding angle of the guide ply 1, the lug 8 provided under this ply may be sufficient to cooperate with a housing 9 such that the retention of the ply 1 is ensured forwards and backwards. , in which case it is not necessary to provide a stop of the rear edge 1 c against pads 1 1. However, in the case of demolding where the contact surfaces are not blunt, the use of the rear studs 1 1 is advantageous.

L'assemblage des composants du dispositif A illustrés sur Fig. 1 résulte des explications qui précèdent.  The assembly of the components of the device A illustrated in FIG. 1 results from the foregoing explanations.

La nappe 1 est mise en place sur la pièce inférieure 7, qui sert de support, en étant positionnée par coopération de l'ergot 8 et du logement 9, et par l'appui de la tranche arrière de la nappe contre les plots 1 1 .  The sheet 1 is placed on the lower part 7, which serves as a support, being positioned by cooperation of the lug 8 and the housing 9, and by the support of the rear edge of the sheet against the pads 1 1 .

La carte B, avec le radiateur 12, est ensuite installée sur la nappe 1 en étant guidée par les pions obliques 13, engagés dans les ouvertures oblongues 14, 15 de la carte et du radiateur. La position de la carte B est assurée de manière précise par appui sur les pions 5a, et coopération des ergots de positionnement 5x, 5y, et des pions 6x, 6y.  The card B, with the radiator 12, is then installed on the sheet 1 being guided by the oblique pins 13, engaged in the oblong openings 14, 15 of the card and the radiator. The position of the card B is ensured precisely by pressing on the pins 5a, and cooperation of the positioning pins 5x, 5y, and pins 6x, 6y.

Dans ces conditions, les diodes électroluminescentes 3 sont positionnées avec précision au-dessus des dômes 4 d'entrée de lumière dans la nappe.  Under these conditions, the light-emitting diodes 3 are positioned accurately above the domes 4 of light entry into the sheet.

La pièce supérieure 16 est ensuite mise en place et fixée à l'aide des vis 18 qui permettent d'exercer le serrage des faces de la nappe 1 sans créer de contraintes sur les surfaces optiques sensibles.  The upper piece 16 is then put in place and fixed with the screws 18 which make it possible to exert the tightening of the faces of the sheet 1 without creating stresses on the sensitive optical surfaces.

En se reportant à Fig. 4, on peut voir une variante de réalisation dont les éléments identiques ou similaires à des éléments déjà décrits à propos de Figs. 1 à 3 sont désignés par les mêmes références sans que leur description soit reprise.  Referring to Fig. 4, we can see an alternative embodiment of which elements identical or similar to elements already described in connection with Figs. 1 to 3 are designated by the same references without their description being repeated.

Selon la variante de Fig. 4, la pièce inférieure 7' comporte un ergot 8' en saillie sur sa face supérieure, tandis que la nappe 1 ' comporte, sur sa face inférieure, un logement 9' formé par un trou non débouchant, propre à recevoir l'ergot 8' avec un jeu réduit de sorte que la coopération de cet ergot 8' avec le logement 9' assure une retenue vers l'avant et vers l'arrière de la nappe 1 ' par rapport à la pièce inférieure 7'. According to the variant of FIG. 4, the lower part 7 'has a lug 8' projecting on its upper face, while the ply 1 'has, on its underside, a housing 9' formed by a non-through hole, adapted to receive the lug 8 'with a reduced play so that the cooperation of this lug 8' with the housing 9 'provides retention towards the front and rear of the web 1' relative to the lower part 7 '.

Des plots de retenue 1 1 peuvent cependant être prévus à l'arrière de la nappe 1 ' comme illustré sur Fig. 4, de manière semblable à l'exemple de réalisation des Figs. 1 -3.  However, retaining studs 11 may be provided at the rear of the ply 1 'as illustrated in FIG. 4, similarly to the embodiment of FIGS. 1 -3.

Le logement 9' coopère, selon Fig. 4, avec un pion 8' sortant de la pièce inférieure 7' de support. Toutefois, il est possible d'empiler plusieurs nappes de guidage telles que la nappe 1 ' et, dans ce cas, le logement correspondant au trou 9' de la nappe supérieure peut coopérer avec un pion prévu sur la face supérieure d'une nappe inférieure. On peut ainsi indexer plusieurs nappes de guidage empilées.  The housing 9 'cooperates, according to FIG. 4, with a pin 8 'coming out of the lower piece 7' of support. However, it is possible to stack several guide plies such as the ply 1 'and, in this case, the housing corresponding to the hole 9' of the upper ply can cooperate with a pin provided on the upper face of a lower ply. . It is thus possible to index several stacked guiding layers.

Comme dans l'exemple des Fig. 1 -3, la nappe de guidage 1 ' de Fig. 4 est prise en tenaille entre la pièce inférieure 7' de support et la pièce supérieure 16 avec interposition de la carte B de circuit imprimé et, le cas échéant, du radiateur 12.  As in the example of Figs. 1 -3, the guide ply 1 'of FIG. 4 is clamped between the lower support part 7 'and the upper part 16 with the interposition of the printed circuit board B and, if appropriate, the radiator 12.

En se reportant aux Figs. 6 à 8, on peut voir une variante de réalisation du dispositif d'éclairage selon laquelle la pièce supérieure 16" et la pièce inférieure 7" sont d'un seul tenant et forment une pièce d'ensemble 24 en déterminant une fente 25 dans laquelle la nappe de guidage 1 peut être montée en tiroir en étant engagée depuis l'arrière vers l'avant.  Referring to Figs. 6 to 8, we can see an alternative embodiment of the lighting device according to which the upper piece 16 "and the lower piece 7" are in one piece and form an assembly piece 24 by determining a slot 25 in which the guide web 1 can be mounted in drawer being engaged from the back to the front.

Le bord inférieur de la fente 25 comporte, selon l'exemple de Fig. 6, deux lames élastiques horizontales 26, écartées transversalement, en saillie vers l'arrière. Chaque lame 26 comporte un organe d'accrochage constitué par un trou 27 dans l'exemple de Fig. 7 propre à coopérer avec un organe complémentaire, à savoir un pion 28 prévu sous la nappe 1 . La disposition inverse est possible selon laquelle le pion serait prévu en saillie sur la lame 26 et le logement serait prévu dans la nappe 1 comme illustré sur Fig. 4.  The lower edge of the slot 25 comprises, according to the example of FIG. 6, two horizontal resilient blades 26, spaced transversely, projecting rearwardly. Each blade 26 comprises a hooking member constituted by a hole 27 in the example of FIG. 7 adapted to cooperate with a complementary member, namely a pin 28 provided under the sheet 1. The reverse arrangement is possible according to which the pin is projected on the blade 26 and the housing would be provided in the ply 1 as illustrated in FIG. 4.

Les lames élastiques 26 forment en outre un organe de serrage de la nappe 1 contre la partie supérieure 16" de la pièce 24, avec interposition de la carte B de circuit imprimé et éventuellement d'un radiateur 12.  The elastic strips 26 furthermore form a clamping member of the ply 1 against the upper part 16 "of the piece 24, with the interposition of the printed circuit board B and possibly a radiator 12.

Selon cette variante des Fig. 6 à 8, il n'est plus nécessaire de prévoir des vis de serrage telles que celles des figures précédentes, le serrage étant assuré par les lames élastiques 26. La construction est simplifiée puisque la pièce 24 regroupe les pièces inférieure et supérieure en un seul ensemble.  According to this variant of FIGS. 6 to 8, it is no longer necessary to provide clamping screws such as those of the preceding figures, the clamping being ensured by the elastic blades 26. The construction is simplified since the part 24 includes the lower and upper parts in one together.

Quel que soit le mode de réalisation adopté, le dispositif d'éclairage selon l'invention permet d'indexer et de fixer la pièce optique constituée par la nappe de guidage 1 , 1 ' en conservant l'homogénéité de lumière en sortie de pièces optiques et sa prestation optique, sans créer de trous débouchant dans des zones sensibles à l'intérieur de la pièce, et sans créer d'appendices de fixation sur la pièce optique. Whatever the embodiment adopted, the lighting device according to the invention makes it possible to index and fix the optical part constituted by the guide ply 1, 1 'while keeping the homogeneity of light at the output of optical parts. and its optical performance, without creating holes leading into sensitive areas inside the room, and without creating attachment appendages on the optical part.

Le dispositif proposé permet :  The proposed device allows:

- de supprimer des "trous noirs" dans la tranche de sortie de lumière de la pièce optique (nappe de guidage) qui seraient dus à des passages de vis dans l'épaisseur de la matière de la pièce optique ;  - to remove "black holes" in the light output portion of the optical part (guide sheet) that would be due to screw passages in the thickness of the material of the optical part;

- d'éviter des appendices pour fixation à l'arrière de la pièce optique, qui réduiraient sensiblement les performances optiques de la pièce s'ils étaient prévus à l'arrière des paraboles ;  - Avoid appendages for attachment to the back of the optical part, which would significantly reduce the optical performance of the room if they were provided at the back of the dishes;

- d'éviter des appendices pour fixation en bout de la pièce optique qui prendraient du volume dans le projecteur ; avoid appendages for fixing at the end of the optical part that would take volume in the projector;

- d'avoir des jeux périphériques très faibles autour de la pièce optique, notamment dans la solution des Fig. 1 à 4.  to have very weak peripheral games around the optical part, in particular in the solution of FIGS. 1 to 4.

Claims

REVENDICATIONS 1 . Dispositif d'éclairage ou de signalisation pour véhicule automobile comportant : 1. Lighting or signaling device for a motor vehicle comprising: - une nappe de guidage de lumière (1 ,1 ') présentant une face supérieure (1 a) et une face inférieure (1 b), une tranche arrière (1 c) avec au moins un lobe, et une tranche de sortie (1 d), a light guide mat (1, 1 ') having an upper face (1 a) and a lower face (1 b), a rear edge (1 c) with at least one lobe, and an output edge (1 d) - au moins une source lumineuse, du type diode électroluminescente (3), montée sur une carte (B) de circuit imprimé, propre à injecter un faisceau lumineux par une face de la nappe de guidage, laquelle, par réfraction et/ou réflexion sur les faces et sur la tranche arrière, donne un faisceau essentiellement parallèle, émergeant par la tranche de sortie (1 d),  at least one light source, of the electroluminescent diode type, mounted on a printed circuit board (B), capable of injecting a light beam through one face of the guide sheet, which, by refraction and / or reflection on the faces and on the rear edge, gives a substantially parallel beam, emerging through the output wafer (1 d), - des moyens de fixation (F) de la nappe de guidage (1 ,1 ') dans un support (D), caractérisé en ce que :  - Fixing means (F) of the guide web (1, 1 ') in a support (D), characterized in that: - les moyens de fixation (F) de la nappe comprennent des moyens de serragethe fastening means (F) of the sheet comprise clamping means (5) des faces (1 a, 1 b) de la nappe entre un élément supérieur (6,B) contre lequel vient en appui la face supérieure (1 a) de la nappe, et une pièce inférieure (7) contre laquelle vient en appui la face inférieure (1 b), (5) faces (1a, 1b) of the web between an upper element (6, B) against which bears the upper face (1a) of the web, and a lower part (7) against which comes in support of the lower face (1 b), - et des moyens de positionnement (P) sont prévus entre la pièce inférieure (7, 7', 7 ") et la nappe (1 ,1 ').  and positioning means (P) are provided between the lower piece (7, 7 ', 7 ") and the sheet (1, 1'). 2. Dispositif selon la revendication 1 , caractérisé en ce que l'élément supérieur2. Device according to claim 1, characterized in that the upper element (6) contre lequel vient en appui la nappe (1 , 1 ') est constitué par la carte (B) de circuit imprimé disposée au-dessus de la nappe (1 , 1 '). (6) against which abuts the web (1, 1 ') is constituted by the printed circuit board (B) disposed above the web (1, 1'). 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens de serrage (S) comprennent une pièce supérieure (16, 16") comportant un bec avant (17, 17") qui masque la carte (B) de circuit imprimé et se termine à proximité de la nappe (1 ), et des moyens de serrage (S) de la pièce supérieure (16, 16") et de la pièce inférieure (7,7',7 "). 3. Device according to claim 1 or 2, characterized in that the clamping means (S) comprise an upper piece (16, 16 ") having a front nose (17, 17") which hides the circuit board (B). printed and terminates near the web (1), and clamping means (S) of the upper piece (16, 16 ") and the lower piece (7.7 ', 7"). 4. Dispositif selon la revendication 3, caractérisé en ce que la pièce supérieure (16) est indépendante de la pièce inférieure (7, 7'), et les moyens de serrage (S) comprennent au moins un organe de serrage (18), prévu à l'arrière de la tranche arrière (1 c), pour prendre la nappe (1 ) en tenaille entre les deux pièces (7, 7' ; 16). 4. Device according to claim 3, characterized in that the upper piece (16) is independent of the lower piece (7, 7 '), and the clamping means (S) comprise at least one clamping member (18), provided at the rear of the rear slice (1 c), to take the ply (1) pinced between the two pieces (7, 7 ', 16). 5. Dispositif selon la revendication 4, caractérisé en ce que l'organe de serrage comprend au moins une vis (18). 5. Device according to claim 4, characterized in that the clamping member comprises at least one screw (18). 6. Dispositif selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les pièces supérieure (17") et inférieure (7") forment un ensemble (24) d'un seul tenant, et déterminent une fente (25) dans laquelle la nappe de guidage (1 ) est montée en tiroir. 6. Device according to any one of claims 1 to 3, characterized in that the upper (17 ") and lower (7") parts form an assembly (24) in one piece, and determine a slot (25) in which the guide web (1) is mounted in a drawer. 7. Dispositif selon la revendication 6, caractérisé en ce que le bord inférieur de la fente (25) comporte au moins une lame élastique (26), notamment horizontale, en saillie vers l'arrière, formant organe de serrage. 7. Device according to claim 6, characterized in that the lower edge of the slot (25) comprises at least one resilient blade (26), in particular horizontal, projecting rearwardly, forming clamping member. 8. Dispositif selon la revendication 7, caractérisé en ce que la lame élastique (26) comporte un logement (27) ou pion, propre à coopérer avec un pion (28), ou logement, prévu sous la nappe. 8. Device according to claim 7, characterized in that the elastic blade (26) comprises a housing (27) or pin adapted to cooperate with a pin (28), or housing, provided under the sheet. 9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la source lumineuse (3) est en saillie sur la carte (B) du circuit imprimé pour être placée au droit d'une zone de réception de lumière (4), la carte comportant au voisinage de cette zone de réception des pions (5a) en saillie pour s'appliquer contre la carte (B) de circuit imprimé, lors du serrage. 9. Device according to any one of the preceding claims, characterized in that the light source (3) is projecting on the board (B) of the printed circuit to be placed in line with a light receiving area (4). , the card having in the vicinity of this zone of reception pins (5a) projecting to be applied against the PCB (B) of printed circuit, during tightening. 10. Dispositif selon la revendication 9, caractérisé en ce que des ergots (5x, 5y) sont également prévus sur la nappe (1 ,1 ') pour le positionnement selon deux directions orthogonales (x, y) correspondant à la direction transversale et à la direction longitudinale d'un véhicule équipé du dispositif. 10. Device according to claim 9, characterized in that pins (5x, 5y) are also provided on the web (1, 1 ') for positioning in two orthogonal directions (x, y) corresponding to the transverse direction and the longitudinal direction of a vehicle equipped with the device. 1 1 . Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de positionnement (P), au niveau de la nappe (1 ,1 ') et de la pièce inférieure (7, 7', 7") comprennent au moins un ergot (8,28) ou un logement (9') prévu sous la face inférieure de la nappe, et au moins un logement (9, 27) ou ergot (8') prévu sur la pièce inférieure (7, 7'). 1 1. Device according to any one of the preceding claims, characterized in that the positioning means (P), at the level of the ply (1, 1 ') and the lower piece (7, 7', 7 ") comprise at least a pin (8,28) or a housing (9 ') provided under the lower face of the web, and at least one housing (9,27) or lug (8') provided on the lower part (7,7 ') . 12. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de positionnement (P) comprennent des organes de butée (1 1 ), en saillie sur la pièce inférieure (7,7') propres à venir en appui contre la tranche arrière (1 c) de la nappe. 12. Device according to any one of the preceding claims, characterized in that the positioning means (P) comprise stop members (1 1), projecting on the lower piece (7, 7 ') suitable to bear in abutment. against the rear slice (1c) of the slick. 13. Dispositif selon la revendication 12, caractérisé en ce que les organes de butée sont en appui contre la tranche arrière (1 c) de la nappe, dans un creux entre deux lobes paraboliques. 13. Device according to claim 12, characterized in that the organs of stop abut against the rear edge (1 c) of the sheet, in a hollow between two parabolic lobes. 14. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une plaque radiateur (12) est disposée entre la carte (B) de circuit imprimé, et la plaque supérieure (16). 14. Device according to any one of the preceding claims, characterized in that a radiator plate (12) is disposed between the printed circuit board (B) and the upper plate (16). 15. Véhicule automobile comprenant un dispositif selon l'une quelconque des revendications précédentes. 15. Motor vehicle comprising a device according to any one of the preceding claims.
PCT/IB2011/054801 2010-11-05 2011-10-28 Lighting or signalling device for a motor vehicle, comprising a light guide layer Ceased WO2012059852A1 (en)

Priority Applications (2)

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CN201180053114.7A CN103201556B (en) 2010-11-05 2011-10-28 Lighting or signaling devices for motor vehicles comprising a light-guiding layer
EP11799315.4A EP2635842B1 (en) 2010-11-05 2011-10-28 Lighting or signalling device for a motor vehicle, comprising a light guide layer

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FR1059126 2010-11-05
FR1059126A FR2967235B1 (en) 2010-11-05 2010-11-05 LIGHTING OR SIGNALING DEVICE FOR A MOTOR VEHICLE HAVING A LIGHT GUIDE RAIL.

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FR2967235B1 (en) 2014-10-31
CN103201556A (en) 2013-07-10
EP2635842A1 (en) 2013-09-11
EP2635842B1 (en) 2020-08-19
CN103201556B (en) 2015-08-05
FR2967235A1 (en) 2012-05-11

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