EP3290779B1 - Beleuchtungs- und signalgebungsvorrichtung für kraftfahrzeuge, mit einen lichtleiter mit verbreitertem endstück - Google Patents

Beleuchtungs- und signalgebungsvorrichtung für kraftfahrzeuge, mit einen lichtleiter mit verbreitertem endstück Download PDF

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Publication number
EP3290779B1
EP3290779B1 EP17187584.2A EP17187584A EP3290779B1 EP 3290779 B1 EP3290779 B1 EP 3290779B1 EP 17187584 A EP17187584 A EP 17187584A EP 3290779 B1 EP3290779 B1 EP 3290779B1
Authority
EP
European Patent Office
Prior art keywords
light guide
light
front portion
main body
flat light
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP17187584.2A
Other languages
English (en)
French (fr)
Other versions
EP3290779A1 (de
Inventor
Rodolphe Peron
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.)
PSA Automobiles SA
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PSA Automobiles SA
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Filing date
Publication date
Application filed by PSA Automobiles SA filed Critical PSA Automobiles SA
Publication of EP3290779A1 publication Critical patent/EP3290779A1/de
Application granted granted Critical
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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
    • F21S43/50—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
    • 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
    • F21S43/236—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
    • 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

Definitions

  • the invention relates generally to lighting and / or light signaling devices, intended more particularly for motor vehicles.
  • lighting module such a lighting device and / or light signaling will be referred to hereafter as "lighting module”.
  • the invention therefore relates to a lighting module of a motor vehicle, and more specifically to a lighting module comprising a light signaling function performed by scattering the light emitted by a light source via a light guide of flat type.
  • a lighting module is arranged at the front and rear of a motor vehicle to, on the one hand, to illuminate the road to improve the visibility of the driver of the vehicle, especially in night condition and / or, on the other hand, to signal the position of the vehicle to other road users.
  • a lighting module may consist of a light signaling device whose function is to signal the positioning of the vehicle by day.
  • a device designated DRL for Daytime Running Light (or Lamp) in the English language, meaning daytime running lamp, corresponds to a lighting module automatically turned on during the operation of the vehicle, by day, to improve the visibility of said vehicle.
  • DRL Daytime Running Light
  • Such a device hereafter referred to as a diurnal traffic light device, is mainly positioned in a front lighting module of a motor vehicle.
  • Said diurnal traffic light device comprises, in a known manner, with reference to the figure 1 , a housing closed by a wall, designated ice, consisting more specifically of a two-color ice, having an opaque base and translucent openings, designated "crystal openings".
  • the housing receives at least one light source and a flat light guide capable of diffusing the light emitted by the light source.
  • the translucent openings provided in said mirror allow diffusion, outside said housing, of light from the light source and diffused in the flat light guide. Such openings, according to their positioning, also allow to confer a characteristic light signature of the vehicle concerned.
  • the light function of a daytime running light device is generally achieved by the scattering of light, emitted by one or more light source (s), via a light guide, flat type, designated flat guide or Flat Guide, in English, said flat light guide being mounted inside the aforementioned housing behind the aforementioned ice.
  • Such a flat light guide thus positioned behind the ice has, in the state of the art, a section of constant thickness.
  • Said constant thickness typically limited to an injection thickness of between 6 and 8 mm according to conventional manufacturing techniques of this type of polycarbonate part, does not make it possible to fill the entire width of the aforementioned ice openings. Indeed, as described in figure 2 it results from the functional play between the flat light guide and the ice, a direct visibility of the inside of the housing from the outside, which is unsightly.
  • the invention therefore aims to overcome these drawbacks by proposing a lighting and / or light-signaling device in which the light function is carried out by light scattering, emitted by a light source, via a flat light guide whose section has an enlarged end.
  • Such a device makes it possible to fill the visual defects resulting from the presence of a void space between the flat light guide and the ice, necessary for the ventilation of the housing.
  • Such a device comprising a flat light guide having an enlarged front portion, allows, as such, to prevent the inside of the housing from being visible from the outside.
  • the junction zone between the main body and the front part has a section comprising a radius of curvature of between 1 and 2 mm, said radius of curvature being adapted to allow light to be diffused over the entire surface of the enlarged section of the beam. said front portion.
  • a radius of curvature allows a better diffusion of the light in the entirety of the front part.
  • the main body of the flat light guide is of constant section, allowing a simpler and less expensive manufacture.
  • the diameter of the section of the main body of the flat light guide is between 6 and 8 mm, making it possible to use the conventional manufacturing techniques of this type of polycarbonate part, by injection.
  • the enlarged section of the front portion of the flat light guide comprises three portions: a central portion and two lateral portions extending on either side of the central portion, so as to form said front portion of enlarged thickness .
  • the thickness of the front portion of the flat light guide is 2 to 6 mm greater than the thickness of the main body, thus making it possible to visually fill the functional clearance.
  • the front portion of the flat light guide has a width of between 3 and 12 mm, a width approximately equal to 10% to 14% of the width of the main body.
  • a width small in front of the width of the main body, allows to limit the size inside the housing.
  • the invention also relates to a vehicle comprising a lighting and / or light-signaling device according to the invention.
  • the described embodiments are more particularly related to an implementation of the device according to the invention within a motor vehicle.
  • any implementation in a different context, in particular in any type of vehicle, is also covered by the present invention.
  • the figure 3 represents a lighting device and / or light signaling, designated lighting module.
  • the figure 3 more specifically, in this case, a lighting module corresponding to a device 1 of daytime running light.
  • a device 1 of daytime running light Such a device 1 makes it possible to signal the positioning of the day vehicle.
  • the light function of the daytime running light device 1 is realized by diffusion of the light from light sources in a flat light guide 40.
  • the device 1 presented on the figure 3 comprises a flat guide 40 made according to the invention.
  • the embodiment presented in this document describes a device 1 of daytime running light. It goes without saying that the invention applies to any lighting and / or light-signaling device whose light function is achieved by diffusion of the light emitted by a light source via a flat light guide 40.
  • the device 1 comprises a housing 10, open towards the front, corresponding to the outside of the device 1 mounted on a vehicle, a closing wall, designated ice 20, adapted to cooperate with said housing 10, a flat light guide 40, adapted to fit into said housing 10 and a plurality of light sources (not shown), adapted to fit into the housing 10, so as to inject light into said flat light guide 40 allowing the diffusion of light.
  • the housing 10 has a typically elongate base defining a length and a width of said housing 10.
  • the housing 10 includes, on one of its faces, an opening extending the entire length of said housing 10, as shown in section on the figure 4 . Said housing 10 is closed by the closure wall.
  • the closure wall typically made of plastic material, is conventionally referred to as ice cream 20.
  • the translucent openings 21 allow the diffusion, outside said housing 10, of light from the light source.
  • Said translucent openings 21 extend over the length of the window 20 and can be of any desired shape and / or geometry.
  • Said translucent openings 21 also extend along the width of the ice 20 over a width G. Said width G may vary according to the arrangement of the translucent openings 21 on the ice 20.
  • the device 1 also comprises a flat light guide 40 as well as at least one light source, adapted to inject light into said flat light guide 40 able to diffuse said light.
  • the device 1 comprises a plurality of LED-type light sources, which stands for light-emitting diodes. The light scattered in the flat light guide 40 is thus transmitted outside the housing 10 through the translucent openings 21 of the ice 20 above.
  • Said flat light guide 40 is adapted to fit inside the housing 10, upstream of the window 20, so as to maintain a gap between said flat light guide 40 and said window 20.
  • Such empty space designated functional clearance 50, is necessary for the circulation of air in order to avoid any condensation inside the housing 10.
  • the flat light guide 40 comprises a main body 41 and a front portion 42, extending towards the front of the housing 10 of the device 1.
  • the main body 41 of the flat light guide 40 has a constant section of width L and a thickness E typically of the order of 6 to 8 mm.
  • said flat light guide 40 comprises a front portion 42 of E 'wide thickness, typically of the order of 8 to 14 mm, extending to the front of the device 1.
  • the front portion 42 has a width L', small in front of the width L of the main body 41.
  • the width L 'of the front portion 42 is of the order of 3 to 12 mm and the width L of the main body 41 of 30 to 90 mm along the curve of the flat light guide 40.
  • the widened thickness E' the front portion 42 is larger than the width G the translucent openings 21 arranged in the ice 20.
  • Said translucent openings 21 typically have a width G of the order of magnitude of the thickness E of the main body 41.
  • the sectional view of the front portion 42 shows that the latter comprises three distinct portions: a central portion 421 and two lateral portions 422, 423.
  • the central portion 421 is of identical section to the section of the main body 41.
  • the two lateral portions 422, 423 which may have the same or different dimensions, are adapted to prevent the direct visibility, from the outside, of the inside of the housing 10 via the functional clearance 50, on both sides of the housing.
  • the two side portions 422, 423 thus function to inhibit any visibility of the interior of the housing 10 from the outside, mainly for aesthetic purposes.
  • the junction zone between the main body 41 and the front portion 42 comprises on either side of the central portion 421 a radius of curvature 43, 43 ', for progressively widening the section of the flat light guide 40
  • the radii of curvature 43, 43 ', potentially dissimilar, are of the order of 1 to 2 mm.
  • Such a radius of curvature 43, 43 ' makes it possible to distribute the light uniformly over the entire front portion 42 of the flat light guide 40.
  • the flat light guide 40 in a device 1 of daytime running light according to the invention, can visually mask the functional clearance 50 present between the flat light guide 40 and the ice 20 while ensuring a diffusion of the homogeneous light and complies with the regulations in force.
  • the manufacture of such a flat light guide 40 also incurs no additional cost since it is made from a flat light guide mold of the prior art in which the portion corresponding to the front portion has been dug to obtain a flat light guide 40 expanded at one end.

Landscapes

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

Claims (8)

  1. Vorrichtung (1) zur Beleuchtung und/oder Lichtsignalisierung für Fahrzeug, insbesondere für Kraftfahrzeug, wobei die Vorrichtung (1) Folgendes umfasst:
    - ein Gehäuse (10), das an der Vorderseite, das heißt nach außen, offen ist, wenn die Vorrichtung (1) auf ein Fahrzeug montiert ist,
    - mindestens eine Lichtquelle, die in dem Inneren des Gehäuses (10) angeordnet ist,
    - eine Scheibe (20), die einer Wand entspricht, die angepasst ist, um das Gehäuse (10) zu schließen, wobei die Scheibe (20) im Wesentlichen undurchsichtig ist und durchlässige Öffnungen (21) umfasst, die angepasst sind, um das Übertragen des Lichts zu erlauben, das aus der mindestens einen Lichtquelle außerhalb des Gehäuses (10) stammt, wobei sich die durchlässigen Öffnungen (21) auf einer Breite (G) der Scheibe (20) erstrecken, und
    - ein Lichtleiterflachteil (40), das in das Gehäuse (10) montiert ist, das angepasst ist, um Licht, das aus der mindestens einen Lichtquelle stammt, zu streuen, und das in einem vorbestimmten Abstand von der Scheibe (20) derart angeordnet ist, dass ein leerer Raum gebildet wird, der einem funktionalen Spiel (50) entspricht, das angepasst ist, um eine Belüftung des Gehäuses (10) zu erlauben, wobei das Lichtleiterflachteil (40) einen Hauptkörper (41), einen Vorderseitenteil (42) zu der Vorderseite des Gehäuses (10) gegenüber der Scheibe (20) sowie eine Verbindungszone umfasst, die den Vorderseitenteil (42) mit dem Hauptkörper (41) verbindet,
    gekennzeichnet durch
    den Vorderseitenteil (42) des Lichtleiterflachteils (40), der einen erweiterten Querschnitt umfasst, der eine Stärke (E') aufweist, die größer ist als die Breite (G) der durchlässigen Öffnungen (21) der Scheibe (20).
  2. Vorrichtung (1) nach Anspruch 1, wobei die Verbindungszone zwischen dem Hauptkörper (41) und dem Vorderseitenteil (42) einen Krümmungsradius (43, 43') aufweist, der zwischen 1 und 2 mm liegt, wobei der Krümmungsradius angepasst ist, um das Streuen von Licht auf dem gesamten verbreiterten Querschnitt des Vorderseitenteils (42) zu erlauben.
  3. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei der Hauptkörper (41) des Lichtleiterflachteils (40) einen konstanten Querschnitt hat.
  4. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei der Durchmesser des Querschnitts des Hauptkörpers (41) des Lichtleiterflachteils (40) zwischen 6 und 8 mm liegt.
  5. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei der erweiterte Querschnitt des Vorderseitenteils (42) des Lichtleiterflachteils (40) drei Abschnitte umfasst: einen zentralen Abschnitt (421) und zwei seitliche Abschnitte (422, 423), die sich an jeder Seite des zentralen Abschnitts (421) derart erstrecken, dass der Vorderseitenteil (42) mit erweiterter Stärke (E') gebildet wird.
  6. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei die Stärke (E') des Vorderseitenteils (42) des Lichtleiterflachteils (40) um 2 bis 6 mm größer ist als die Stärke (E) des Hauptkörpers (41).
  7. Vorrichtung (1) nach einem der vorstehenden Ansprüche, wobei der Vorderseitenteil (42) des Lichtleiterflachteils (40) eine Breite (L') zwischen 3 und 12 mm besitzt.
  8. Kraftfahrzeug, das mindestens eine Vorrichtung (1) zur Beleuchtung und/oder Lichtsignalisierung nach einem der vorstehenden Ansprüche umfasst.
EP17187584.2A 2016-09-01 2017-08-23 Beleuchtungs- und signalgebungsvorrichtung für kraftfahrzeuge, mit einen lichtleiter mit verbreitertem endstück Active EP3290779B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1658116A FR3055264B1 (fr) 2016-09-01 2016-09-01 Dispositif d'eclairage et/ou de signalisation lumineuse pour vehicule, comprenant un guide de lumiere a extremite elargie

Publications (2)

Publication Number Publication Date
EP3290779A1 EP3290779A1 (de) 2018-03-07
EP3290779B1 true EP3290779B1 (de) 2019-08-07

Family

ID=57121422

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17187584.2A Active EP3290779B1 (de) 2016-09-01 2017-08-23 Beleuchtungs- und signalgebungsvorrichtung für kraftfahrzeuge, mit einen lichtleiter mit verbreitertem endstück

Country Status (4)

Country Link
EP (1) EP3290779B1 (de)
CN (1) CN108302472B (de)
ES (1) ES2744102T3 (de)
FR (1) FR3055264B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3095259B1 (fr) * 2019-04-16 2021-03-19 Psa Automobiles Sa Guide de lumière plan ayant une surface de sortie de lumière à finition lisse et feu de véhicule automobile comportant un tel guide.
FR3098277A1 (fr) 2019-07-01 2021-01-08 Psa Automobiles Sa Dispositif de signalisation lumineuse pour véhicule

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2794218B1 (fr) * 1999-05-26 2001-07-13 Valeo Vision Feu de signalisation pour vehicule automobile
FR2934353B1 (fr) * 2008-07-25 2011-03-11 Valeo Vision Sas Systeme optique avec fonction d'eclairage a large surface d'emission pour vehicule automobile
FR2967235B1 (fr) * 2010-11-05 2014-10-31 Valeo Vision Dispositif d'eclairage ou de signalisation, pour vehicule automobile, comportant une nappe de guidage de lumiere.
FR3002895B1 (fr) * 2013-03-05 2016-12-23 Peugeot Citroen Automobiles Sa Dispositif d'indication de changement de direction d'un vehicule, a guide de lumiere et ecran opalin
FR3014787B1 (fr) * 2013-12-12 2016-01-01 Peugeot Citroen Automobiles Sa Dipositif de signalisation lumineuse

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Also Published As

Publication number Publication date
CN108302472A (zh) 2018-07-20
CN108302472B (zh) 2021-05-28
FR3055264B1 (fr) 2018-08-17
ES2744102T3 (es) 2020-02-21
EP3290779A1 (de) 2018-03-07
FR3055264A1 (fr) 2018-03-02

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