EP2080948A2 - Element der rückwärtigen Scheinwerfereinheit eines Kraftfahrzeugs, das einen Rückstrahler mit Diffusionslinsen und Hintergrundbeleuchtung bildet - Google Patents

Element der rückwärtigen Scheinwerfereinheit eines Kraftfahrzeugs, das einen Rückstrahler mit Diffusionslinsen und Hintergrundbeleuchtung bildet Download PDF

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Publication number
EP2080948A2
EP2080948A2 EP09150489A EP09150489A EP2080948A2 EP 2080948 A2 EP2080948 A2 EP 2080948A2 EP 09150489 A EP09150489 A EP 09150489A EP 09150489 A EP09150489 A EP 09150489A EP 2080948 A2 EP2080948 A2 EP 2080948A2
Authority
EP
European Patent Office
Prior art keywords
light
mask
emitting diodes
optical block
reflector
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.)
Withdrawn
Application number
EP09150489A
Other languages
English (en)
French (fr)
Inventor
Denis Dumur
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
Original Assignee
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of EP2080948A2 publication Critical patent/EP2080948A2/de
Withdrawn legal-status Critical Current

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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
    • F21S43/20—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
    • F21S43/251—Light guides the light guides being used to transmit light from remote light sources
    • 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
    • F21S43/245—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
    • F21S43/235—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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • 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 the rear light units of a motor vehicle, also called rear lights signaling.
  • the light-emitting diodes emitting light not only forwards (which corresponds to the rear of the vehicle) but also on the sides, part of the light emitted on the sides propagates inside the housing and constitutes thus a parasitic light which is all the more unsightly as the number of light-emitting diodes is high. It is certainly possible to prevent the spread of this stray light by means of dedicated screens, but these increase the weight and the costs of design and manufacture.
  • the invention therefore aims to improve the situation.
  • the invention also proposes a rear optical unit of a motor vehicle, comprising a housing housing at least two diodes electroluminescent, a mask with windows placed in front of the light emitting diodes, an ice placed in front of the mask, and an element of the type shown below.
  • the invention proposes a rear optical unit intended to form part of a motor vehicle and comprising a housing housing at least two light-emitting diodes, a mask provided with windows placed in front of the light-emitting diodes and an ice-cream placed in front of the mask.
  • This element is characterized in that it is adapted to be installed between the diodes and the mask and comprises a part which defines a reflex reflector and which is extended at its periphery by diffusion lenses adapted to be housed at least partially in the windows in front of the light-emitting diodes to diffuse their light towards the ice.
  • This element cooperates with the mask, and in particular with the opaque parts of the mask, to prevent or reduce the propagation of the parasitic light coming from the diodes, in particular at the level of the frames surrounding the windows. Indeed, part of the light of the diodes is emitted forward thanks to the presence of the lenses. Another part of the light of the diodes is blocked by the mask instead of being transformed into parasitic light emitted on the sides and being reflected everywhere.
  • FIG. 1 We have schematically represented on the figure 1 an embodiment of a rear optical unit (or taillight signaling) FA according to the invention, before assembly, intended to equip a motor vehicle.
  • Such a rear optical unit FA comprises a housing B secured to the front side with a mirror (front) G and possibly the rear side to the person skilled in the art called a "lamp holder" PL.
  • the housing B houses (on the front side) at least two light-emitting diodes (or LEDs (or LEDs in English)), an EL element according to the invention and a mask M.
  • the housing B is intended to house fifteen light-emitting diodes D constituting as many light sources.
  • the invention is not limited to this number of light-emitting diodes D. It applies in fact to the housings B housing at least two light-emitting diodes D.
  • the light emitting diodes D are mounted on three bars BD (two of them having six while the third has three). But this is not obligatory.
  • the mask M comprises windows F in number equal to the number of light-emitting diodes D and intended to be placed opposite them, respectively.
  • This mask M is preferably metallized (for example chromed), at least partially, especially on its front face which is intended to be observed from outside the vehicle and on reflective portions at least partially defining the windows F (and generally grained to absorb parasitic light rays).
  • the shape of the mask M depends on the way in which the light-emitting diodes D are arranged relative to one another in the housing B. In the non-limiting exemplary embodiment illustrated in FIG. figure 1 , the light-emitting diodes D are arranged substantially in a U.
  • the EL element according to the invention is intended to be installed between the electroluminescent diodes D and the mask M.
  • it comprises a part C which defines a retro-reflector (or cataphot) and which is extended over at least part of its periphery by diffusion lenses L whose number is equal to the number of light-emitting diodes D.
  • each diffusion lens L is intended to be housed at least partially in one of the windows F of the mask M in front of the corresponding light-emitting diode D so as to diffuse the light that the latter emits towards the ice-cream G (that is forward (which is the rear of the vehicle)).
  • An EL element according to the invention is therefore a monobloc element which provides at least two functions: the reflection of the light which comes from a light source located behind the vehicle (catadiopter C) and the scattering of the light emitted by the light-emitting diodes D (diffusion lenses L).
  • the rear face F1 of the reflector portion C which is opposite its front face F2 facing the ice G (see figure 5 ), is provided with facets (or patterns) for reflecting the light forward (which corresponds to the rear vehicle).
  • the shape of the element EL depends at least on the manner in which the light-emitting diodes D are arranged relative to one another in the housing B. It can also depend, as in the non-limiting embodiment illustrated on FIG. the Figures 1 to 3 of the form of the mask M. In fact, in the nonlimiting exemplary embodiment illustrated on the Figures 1 to 3 , the mask M comprises a central opening O which is surrounded at least partially by the windows F and opposite which is placed the reflector portion C of the EL element.
  • the reflector portion C may possibly be extended by an extension EX beyond the zone in which the diffusion lenses L are located. This is particularly the case in the nonlimiting exemplary embodiment which is illustrated in FIGS. Figures 1 to 3 .
  • the central opening O of the mask M may have substantially the shape of the retro-reflector portion C and its extension EX.
  • this extension EX does not necessarily constitute a retro-reflector, and that it may have a different orientation from that of the retro-reflector portion C (as in the non-limiting embodiment example which is illustrated in FIGS. Figures 1 to 3 ).
  • each diffusion lens L may be secured to the reflector portion C by a bridge P.
  • the latter does not necessarily provide a binding function. It is indeed particularly advantageous, as illustrated on the figure 5 it also provides a light guide function.
  • a bridge P can be arranged to guide part of the light, which is emitted by a light-emitting diode D and which penetrates into the diffusion lens L associated therewith, to the inside (path TL) of the reflector portion C so as to illuminate it by backlighting.
  • the light which is guided towards the reflector portion C is that which is emitted at relatively large angles, typically between about 30 ° and about 60 ° when the light-emitting diode D emits light forward (which corresponds to the vehicle) at angles between 0 ° and approximately 60 ° (as shown in figure 5 ). It will therefore be understood that the invention advantageously proposes to recover at least a portion of the light emitted by the light-emitting diodes D, which has hitherto been regarded as parasitic (and therefore not diffused towards the front) in order to retract illuminate the reflector portion C.
  • the associated bridge P may be shaped so as to penetrate the light in this part C in a direction. chosen angle of incidence (see figure 5 ), for example between about 20 ° and about 60 °. This forms a kind of curtain of light that gives an impression of backlighting.
  • This backlight function is a third function of the EL element. It will of course be understood that it is active only when the light-emitting diodes D are in continuous operation (that is to say when they provide a lantern function which corresponds to a continuous ignition).
  • the EL element is made of a material having optical properties similar to those of glass, such as a synthetic material.
  • PMMA can be used.
  • the synthetic material used may be colored or not colored as required, and in particular depending on whether the area of the ice G which is located opposite the reflex reflector portion C (as well as its possible extension EX) is uncoloured or colored.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP09150489A 2008-01-18 2009-01-14 Element der rückwärtigen Scheinwerfereinheit eines Kraftfahrzeugs, das einen Rückstrahler mit Diffusionslinsen und Hintergrundbeleuchtung bildet Withdrawn EP2080948A2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0850333A FR2926504B1 (fr) 2008-01-18 2008-01-18 Element de bloc optique arriere de vehicule automobile, constituant un catadioptre a lentilles de diffusion et a retro-eclairage

Publications (1)

Publication Number Publication Date
EP2080948A2 true EP2080948A2 (de) 2009-07-22

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP09150489A Withdrawn EP2080948A2 (de) 2008-01-18 2009-01-14 Element der rückwärtigen Scheinwerfereinheit eines Kraftfahrzeugs, das einen Rückstrahler mit Diffusionslinsen und Hintergrundbeleuchtung bildet

Country Status (2)

Country Link
EP (1) EP2080948A2 (de)
FR (1) FR2926504B1 (de)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093126A1 (de) * 2011-01-04 2012-07-12 Hella Kgaa Hueck & Co. Leuchteinheit für fahrzeuge
WO2015049264A1 (de) * 2013-10-01 2015-04-09 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für fahrzeuge
DE102014211789A1 (de) * 2014-06-19 2015-12-24 Volkswagen Aktiengesellschaft Leuchtvorrichtung mit Retroreflexionselement für ein Kraftfahrzeug sowie ein Kraftfahrzeug
DE102014212918A1 (de) * 2014-07-03 2016-01-21 Volkswagen Aktiengesellschaft Kraftfahrzeug-Beleuchtungseinrichtung
WO2020104737A1 (fr) * 2018-11-23 2020-05-28 Psa Automobiles Sa Bloc optique de véhicule à catadioptres flottant par rapport à un masque

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5122939A (en) * 1991-06-07 1992-06-16 David Kazdan Safety lighting and reflector system
NL1008523C2 (nl) * 1998-03-06 1999-09-07 Spanninga Metaal Achterlicht.
US6612728B2 (en) * 2000-07-07 2003-09-02 Truck-Lite Co., Inc. Marker lamp with picture frame optics
WO2002031913A1 (en) * 2000-10-12 2002-04-18 Truck-Lite Co. Inc. Antenna marker lamp
DE102004011600B4 (de) * 2004-03-10 2011-07-28 odelo GmbH, 71409 Heckleuchte eines Fahrzeugs
FR2874993B1 (fr) * 2004-09-07 2008-07-18 Valeo Vision Sa Dispositif d'eclairage et/ou de signalisation a guide de lumiere
US20060061994A1 (en) * 2004-09-22 2006-03-23 Su-Chang Liao Alert lampshade device
DE102006023873A1 (de) * 2006-05-19 2007-11-22 Busch & Müller KG Rücklicht für ein Zweirad
AU2006202597A1 (en) * 2006-06-19 2008-01-10 Prime Global Brands Ltd. Trailer lamp assembly
TWM311615U (en) * 2006-08-03 2007-05-11 Dj Auto Components Corp Structure of LED car lamp

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012093126A1 (de) * 2011-01-04 2012-07-12 Hella Kgaa Hueck & Co. Leuchteinheit für fahrzeuge
WO2015049264A1 (de) * 2013-10-01 2015-04-09 Hella Kgaa Hueck & Co. Beleuchtungsvorrichtung für fahrzeuge
US9915406B2 (en) 2013-10-01 2018-03-13 Hella Kgaa Hueck & Co. Illumination device for vehicles
DE102014211789A1 (de) * 2014-06-19 2015-12-24 Volkswagen Aktiengesellschaft Leuchtvorrichtung mit Retroreflexionselement für ein Kraftfahrzeug sowie ein Kraftfahrzeug
DE102014212918A1 (de) * 2014-07-03 2016-01-21 Volkswagen Aktiengesellschaft Kraftfahrzeug-Beleuchtungseinrichtung
WO2020104737A1 (fr) * 2018-11-23 2020-05-28 Psa Automobiles Sa Bloc optique de véhicule à catadioptres flottant par rapport à un masque
FR3088987A1 (fr) * 2018-11-23 2020-05-29 Psa Automobiles Sa Bloc optique de véhicule à catadioptres flottant par rapport à un masque

Also Published As

Publication number Publication date
FR2926504A1 (fr) 2009-07-24
FR2926504B1 (fr) 2010-08-20

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