EP4402405A1 - Dispositif d'éclairage et/ou de signalisation de véhicule automobile - Google Patents
Dispositif d'éclairage et/ou de signalisation de véhicule automobileInfo
- Publication number
- EP4402405A1 EP4402405A1 EP22760761.1A EP22760761A EP4402405A1 EP 4402405 A1 EP4402405 A1 EP 4402405A1 EP 22760761 A EP22760761 A EP 22760761A EP 4402405 A1 EP4402405 A1 EP 4402405A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- vehicle
- angle
- lighting
- light
- motor vehicle
- 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
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
- F21S43/237—Light guides characterised by the shape of the light guide rod-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
- F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/50—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by aesthetic components not otherwise provided for, e.g. decorative trim, partition walls or covers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2103/00—Exterior vehicle lighting devices for signalling purposes
- F21W2103/55—Daytime running lights [DRL]
Definitions
- the invention relates in general to motor vehicle lighting and/or signaling devices and is more particularly concerned with a lighting and/or light signaling device whose main function is to signal the position of the daytime vehicle.
- a lighting and/or light signaling device whose main function is to signal the position of the daytime vehicle.
- Such devices designated DRL for Daytime Running Light (or Lamp) in English, meaning daytime running light, perform a signaling function automatically lit when the vehicle is put into operation, by day, to improve the visibility of said vehicle.
- DRL Daytime Running Light
- These devices are mainly installed on at least one of the corners of a motor vehicle, generally on the two corners of the front face of a motor vehicle on either side of the grille, being integrated into the front bumper. of the vehicle.
- a lighting and/or signaling device comprises, in a known manner, a box closed by a wall, designated glass, consisting more precisely of a two-color glass, having a base opaque to light and at least a translucent, transparent, opaline or colored part or window.
- the case receives at least one light source and a light guide capable of homogeneously diffusing the light emitted by the light source through the translucent window provided in said glass, towards the outside of said case (outwards from the vehicle).
- Such windows depending on their shape, their number and their positioning, also make it possible to confer a light signature characteristic of the vehicle concerned.
- the interior frontal and exterior lateral visibility angles of the traffic light of the motor vehicle are determined with reference to a longitudinal axis passing through the center of the traffic light, and parallel to the vertical plane of symmetry of the motor vehicle as well as to the ground on which circulates the vehicle (considered as the horizontal plane of reference).
- the interior frontal and exterior lateral visibility angles are scanned in a horizontal plane parallel to the ground between the longitudinal axis of reference and, respectively, half-lines issuing from the center of the light.
- the so-called "inward-facing" half-line i.e. facing the front of the vehicle towards the plane of symmetry
- the lateral visibility angle constraint of 80° is difficult to achieve when the window is in the form of a "narrow" rectangular strip of light, extending substantially in a vertical direction on the front face of the vehicle, and this, all the more so when the curve of the angles of the front face is pronounced.
- narrow strip of light or “narrow” opening, we mean a window whose width does not allow the regulatory lateral visibility angle of 80° to be reached.
- optical prisms made from material with the glass (or formed on an intermediate internal screen) in order to deflect the rays of the light beam in the directions making it possible to satisfy the side visibility angle (80°).
- the rays pass into total reflection and then propagate in the thickness of the glass which behaves as a light guide.
- too prominent prisms arranged inside the glass can generate unsightly accumulations/drips when depositing the anti-condensation varnish on the inside face of the glass.
- the object of the invention is therefore in particular to overcome these drawbacks by proposing a simple and inexpensive solution.
- the first subject of the invention is a lighting and/or signaling device for a motor vehicle, comprising a housing open to the outside when the device is mounted on a vehicle, a light guide arranged at the inside the box, a glass closing the box, said glass being essentially opaque and comprising a translucent opening of determined width defining a window arranged facing the light guide to allow the emission of the light diffused by the light guide towards the exterior, in which the glass comprises a translucent wall and an opaque layer, both obtained after bi-material injection molding, and in which the glass defines a protrusion vis-à-vis the case centered on the light guide, having a first and a second outward facing side walls and a front face respectively connecting the first and second side walls with a closed angle and an open angle, the said opaque layer covering the internal faces of the side walls of the translucent wall, ending on the internal face of the front face of the crystal by presenting, in the closed angle of the protrusion, an inclined plane defining a reflecting facet at the edge of the window for the ray
- the translucent window defines a band of light of generally rectangular shape extending in a substantially vertical direction when the device is mounted on a vehicle.
- the box comprises a protrusion centered on the protrusion of the crystal and supporting the light guide.
- the light guide is a cylindrical guide of circular section.
- the thickness of the opaque layer is constant up to the front face of the protrusion at the level of the open angle of the protrusion and increases in a constant manner in the vicinity of the closed angle up to the face. front of the protuberance to form the inclined plane.
- the reflective facet is obtained by mirror polishing of the inclined plane.
- a second object of the invention is an arrangement for a motor vehicle comprising a bodywork element and at least one lighting and/or signaling device as described above, installed in the bodywork element.
- a third object of the invention is an arrangement for a motor vehicle comprising a front bumper comprising at least one lighting and/or signaling device as described above, located symmetrically with respect to the longitudinal axis of the vehicle, respectively in the vicinity of the front left and right corners of the front bumper; the inclination of the front face of the protrusion following the curve of the front bumper of the vehicle.
- the fourth subject of the invention is an arrangement for a motor vehicle, comprising a first and a second set of three lighting and/or signaling devices as described above, located symmetrically with respect to the longitudinal axis of the vehicle , respectively in the vicinity of the front left and right corners of the front bumper; the three devices of the first and second sets being respectively located in three adjacent openings arranged in the front bumper in the vicinity of the front corners left and right of the front bumper; each of the three devices of the first and second sets sharing the same case and the same lens.
- the fifth subject of the invention is a motor vehicle comprising at least one lighting and/or signaling device as described above or at least one of the arrangements as described above.
- FIG.1 illustrates a front view of an arrangement of lighting and/or signaling devices installed in the front left corner of the bumper of a motor vehicle
- FIG.2 illustrates the arrangement of Figure 1, in a top view in section along the cutting axis ll-ll;
- FIG.3 illustrates one of the lighting and/or signaling devices of the arrangement in accordance with Figures 1 and 2;
- FIG.4 illustrates a first embodiment of a lighting and/or signaling device according to the invention in an arrangement according to Figures 1 and 2; and [Fig.5] illustrates a second embodiment of a device according to the invention in an arrangement in accordance with Figures 1 and 2.
- the orthonormal reference XYZ to identify the directions of extension of the vehicle and the associated relative concepts, including a longitudinal direction (along X), a transverse direction (along Y) and a vertical direction (according to Z).
- the longitudinal direction X extends between the front and the rear of the vehicle
- the transverse direction Y extends between the right and left lateral sides of the vehicle identified with respect to the driver in the driving position of the vehicle
- the vertical direction Z defines the extension of the vehicle in elevation from its rolling plane on the ground.
- FIG. 1 illustrates an arrangement of a first set 10 of three identical lighting and/or signaling devices 11, 12 and 13 installed respectively in openings 21, 22 and 23 arranged in a bodywork element 20 arranged on the front face of a motor vehicle V, and in particular at the left corner of the front bumper 20 of the vehicle V.
- a second set identical to the first 10, not shown and therefore not referenced, arranged symmetrically with respect to the plane of symmetry vertical of the vehicle V at the right angle to the front face of the vehicle V.
- the devices 11 to 13 of the first 10 and second sets fulfill the function of daytime running lights (DRL) and operate simultaneously as soon as the vehicle V is started.
- DRL daytime running lights
- the three devices, or lights, 11-13 are presented vis-à-vis an observer placed in front of the front face of the vehicle V, as three identical, narrow and elongated light bands, of generally rectangular shape, and of the same width, arranged parallel to each other in a substantially vertical or substantially inclined direction with respect to the vertical direction Z.
- the width of the rectangular strips 11 -13 corresponds substantially to the width of the bumper parts 24 and 25 respectively separating the openings 21 and 22 and the openings 22 and 23.
- the openings 21 -13 closely match the three light bands.
- the three light strips 11-13 have the same spacing.
- Figure 2 illustrates the arrangement of Figurel in a top view, in section along the section line II-II of Figure 1.
- the devices 11 -13 comprise a common casing 30 closed at the front (towards the outside of the vehicle V) by a common glass 40.
- the glass 40 is a so-called two-color glass in that it has a wall external transparent to light 41 (translucent) and in that this external wall is completely covered on its internal face with a layer of material opaque to light 42 (black) with the exception of zones 43-45 respectively defining windows transparent through which the light rays coming from inside the box 30 can pass to the outside of the glass 40.
- These windows 43-45 respectively define light strips 11 -13 seen from outside the vehicle V.
- the outer profile of the glass 40 seen from above follows the curve G of the bumper 20.
- the profile of the glass 40 defines a series of hollows and bumps with three protuberances 46- 48 facing the front of the conveyed V, before the conveyed V which is symbolized in FIG. 2 by a solid arrow.
- the protrusions 46-48 are all centered respectively on the axes X1 -X3 parallel to the longitudinal direction of the vehicle V along X. Only the front faces of the protrusions 46-48, contained in the openings 22-23 of the bumper 20, are visible from outside the vehicle V and correspond respectively to the windows 43-45 of the three devices or lights 11-13. They are flush with the skin of the bumper 20 which follows the same curve G.
- the three protrusions 31-33 of the housing 30 respectively support three cylindrical light guides with a circular section 51 -53, arranged inside the box 30 which extend respectively facing the windows 43-45 of the three devices 11 -13 in a general direction in Z being centered with respect to the windows 43-45.
- the light guides 51 -53 are capable of homogeneously diffusing the light emitted by at least one light source, not shown, through the windows 43-45 of the devices, or lights, 11 -13.
- Figure 3 illustrates in detail one 12 of the devices 12-13 of the arrangement of Figure 2.
- the narrowness of the device 12 (small width of the protuberance 47 along Y) and its curve G imposed by the style, must respond to the double constraint of masking the technical zones/elements situated at the rear of the glass 40 and, on the other hand, of respecting the angle of external lateral visibility of 80°.
- the left and right side walls PLG and PLD of the protrusion 47 extend substantially in a direction parallel to the longitudinal axis of the vehicle V (along X) towards the outside of the vehicle V. Due to the pronounced curve G at the right angle (respectively left) of the front face of the vehicle V, the front face FAV of the protuberance 47 is inclined by a determined angle 0 with respect to a fictitious straight line D passing through the front face of the vehicle V (along Y) in being perpendicular to the longitudinal axis of the vehicle V (along X).
- the curve G, reduced to the scale of the protuberance 47 can be considered as a line segment SD.
- the front face FAV of the protrusion 47 forms a determined angle 0 with the straight line D. Due to the inclination of the angle ⁇ and the direction along I axis X of the left PLG and right PLD side walls of the protuberance 47, the latter has a closed angle a between the right side wall PLD and the front face FAV of the protrusion 47 and an open angle p between the left side wall PLG and the front face FAV of the protuberance 47. In this configuration, it is the closed angle a of the protuberance 47 which is critical with respect to compliance with the lateral visibility angle of 80°.
- the opaque layer 42 covers the inner faces of the outer wall 41 of the crystal 40 up to the front face FAV of the crystal 40. Its thickness is conditioned by the molding process and its extent to the inside the protrusion 47 parallel to the side walls PLG and PLD makes it possible to mask the technical zones/elements which could be visible by an observer placed in front of the crystal 40.
- the opaque layer 42 is of constant thickness to the bottom of the protuberance 47; bottom which corresponds to the internal face of the front face FAV of the protuberance 47.
- the light rays R diffused by the light guide 52 are emitted through the window 43, delimited by the thickness of the layer opaque 42, with a maximum angle exceeding the authorized angle of visibility of 80°, considered at the level of the closed angle a of the protrusion 47.
- the rays R are not contained in the lateral visibility angle of 80° as symbolized in figure 3.
- FIG. 4 illustrates a first embodiment of a device or lamp 12 according to the invention making it possible to contain the rays R within the lateral angle of visibility of 80° authorized, at the level of the closed angle a of the protrusion 47.
- the thickness of the opaque layer 42 obtained during the bi-injection molding process with the translucent material used to produce the outer wall 41 of the glass 40, is no longer constant along the inner face of the right side wall PLD of the crystal 40 but increases constantly from a determined distance from the bottom of the protrusion 47 to the bottom of the protrusion so as to define an inclined plane 50 facing the rays R.
- the surface condition of the inclined plane 50 is treated so that the latter has a surface condition similar to that of a mirror (obtained by mirror polishing in the mold for example).
- the inclined plane 50 then behaves like the facet of a mirror.
- the incident light rays R encounter the facet 50, the light is reflected with an angle determined by the inclination of the facet 50 with respect to the rays R so as to fill the photometric grid in the entire range of the lateral visibility angle of 80°.
- FIG. 5 illustrates, by way of a variant, an embodiment according to the invention, in which the opaque material 42 extends over the internal face of the front face FAV of the protrusion 47 following the right side wall PLD then the bottom of the protuberance 47, by filling the closed angle a of the protuberance 47, over a determined length, with the same thickness.
- the edge of the opaque material 42 has an inclined plane 50 similar to that of the embodiment of FIG. 4 which also behaves like the facet of a mirror for the incident rays R. It is thus possible to adapt the length of the opaque layer 42 on the internal wall of the front face FAV and the inclination of the facet 50 to adapt the angle of visibility and the width of the window 43.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2109728A FR3127036B1 (fr) | 2021-09-16 | 2021-09-16 | Dispositif d’éclairage et/ou de signalisation de véhicule automobile. |
| PCT/FR2022/051529 WO2023041856A1 (fr) | 2021-09-16 | 2022-07-29 | Dispositif d'éclairage et/ou de signalisation de véhicule automobile. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP4402405A1 true EP4402405A1 (fr) | 2024-07-24 |
| EP4402405B1 EP4402405B1 (fr) | 2025-08-27 |
Family
ID=78332915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22760761.1A Active EP4402405B1 (fr) | 2021-09-16 | 2022-07-29 | Dispositif d'éclairage et/ou de signalisation de véhicule automobile. |
Country Status (3)
| Country | Link |
|---|---|
| EP (1) | EP4402405B1 (fr) |
| FR (1) | FR3127036B1 (fr) |
| WO (1) | WO2023041856A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3161623B1 (fr) * | 2024-04-25 | 2026-03-13 | Stellantis Auto Sas | Calandre éclairée pour véhicule automobile |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3636229A (en) | 1970-10-26 | 1972-01-18 | Lab Equipment Corp | Electrically resistive crucible |
| FR2989449B1 (fr) * | 2012-04-11 | 2018-05-11 | Valeo Vision | Element transparent pour dispositif d'eclairage et/ou de signalisation de vehicule, comprenant un moyen anti-retrait, et moule de fabrication d'un tel element |
| FR3079282B1 (fr) * | 2018-03-20 | 2020-10-09 | Psa Automobiles Sa | Agencement pour vehicule automobile comprenant un element de carrosserie et un dispositif d’eclairage et/ou de signalisation implante dans ledit element de carrosserie |
| FR3103538B1 (fr) * | 2019-11-25 | 2022-11-04 | Psa Automobiles Sa | Module de signalisation pour véhicules automobiles |
-
2021
- 2021-09-16 FR FR2109728A patent/FR3127036B1/fr active Active
-
2022
- 2022-07-29 WO PCT/FR2022/051529 patent/WO2023041856A1/fr not_active Ceased
- 2022-07-29 EP EP22760761.1A patent/EP4402405B1/fr active Active
Also Published As
| Publication number | Publication date |
|---|---|
| WO2023041856A1 (fr) | 2023-03-23 |
| EP4402405B1 (fr) | 2025-08-27 |
| FR3127036B1 (fr) | 2023-08-04 |
| FR3127036A1 (fr) | 2023-03-17 |
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