EP2738448A2 - Beleuchtung und/oder Signalisierungsvorrichtung, insbesondere für Fahrzeug - Google Patents

Beleuchtung und/oder Signalisierungsvorrichtung, insbesondere für Fahrzeug Download PDF

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Publication number
EP2738448A2
EP2738448A2 EP13194055.3A EP13194055A EP2738448A2 EP 2738448 A2 EP2738448 A2 EP 2738448A2 EP 13194055 A EP13194055 A EP 13194055A EP 2738448 A2 EP2738448 A2 EP 2738448A2
Authority
EP
European Patent Office
Prior art keywords
light
guide
interface
emitting
source
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Withdrawn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
EP13194055.3A
Other languages
English (en)
French (fr)
Other versions
EP2738448A3 (de
Inventor
Jean-François Doha
Sylvain Giraud
Arnaud Perrotin
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
Original Assignee
Valeo Vision SAS
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 filed Critical Valeo Vision SAS
Publication of EP2738448A2 publication Critical patent/EP2738448A2/de
Publication of EP2738448A3 publication Critical patent/EP2738448A3/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Withdrawn legal-status Critical Current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
    • F21S43/10—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
    • 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
    • F21S43/235—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
    • 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

Definitions

  • the present invention relates to a lighting and / or signaling device, in particular for a motor vehicle. It is particularly intended for traffic lights and / or daytime running lights without being limited to such applications.
  • Devices with a light source usually a light-emitting diode, and a light guide in the form of a bead or sheet from which light is emitted in a free geometric pattern are thus known.
  • the light propagates in the guide by total reflection to an exit face, which projects the light so as to be seen by the vehicles that follow or precede.
  • an exit face which projects the light so as to be seen by the vehicles that follow or precede.
  • These devices today use light sources comprising a support for supplying power to a single light emitting diode, said single-component light source.
  • the sources have a limited light intensity.
  • the entrance surface of the light is located at a slice of the guide, of similar thickness. The integration of a plurality of single-component light sources along said entrance face is then possible and provides a good light intensity.
  • the invention therefore aims to obtain a device, provided with a light guide, in particular in the form of a cord, capable of achieving the brightness criteria set by the regulations while limiting the number of light sources.
  • the lighting and / or signaling device in particular for a motor vehicle, comprises at least one light source and one light guide, said source comprising a support and a plurality of transmission components.
  • light arranged on said support so as to emit a light beam, said device being configured to direct said beam towards said guide
  • said support is a printed circuit and / or said light-emitting components are light-emitting diodes, wherein said light-emitting components are arranged to define a transmitting surface of said light beam on a face of said support, wherein said light source is configured so that said transmitting surface has a longitudinal extension axis
  • said light guide comprises at least one emitting portion configured to emit light outside said guide, and at least one guide portion, located between said source and said transmitting portion, configured to transmit said light beam from said source to said transmitting portion, characterized in that said guide portion has a smaller section than that of said emitting portion.
  • the light emitters are integrated into the source and a light beam having a higher luminous intensity is available while limiting the integration difficulties. of the light source or sources in the device. Indeed, for a given light intensity emitted by said device, they are less numerous than in the case of the use of single-component sources. In other words, such a solution facilitates the coupling between the light source (s) and the guide.
  • the invention also relates to a lighting and / or signaling unit comprising said device.
  • the invention relates to a lighting and / or signaling device.
  • Said device will find its applications as a lantern and / or traffic light and / or daytime running light, without this being considered as limiting.
  • Said device comprising at least one light source 1 and a light guide 2.
  • said light source 1 comprises a support 4 and a plurality of light emitting components 6, here four, schematically illustrated in dashed lines. Said components 6 are arranged on said support 4 so as to emit a light beam.
  • a light source 1 is also called multi-component light source as opposed to the so-called single-component sources, comprising only one light emitter. They have the advantage of offering greater light output with a higher degree of integration.
  • the components 6 of the same light source 1 share the same support 4.
  • Said support 4 is, for example, a printed circuit. It serves, in particular to the attachment of said components 6 light emitters and / or their power supply. It may be a support type SMI or insulated metal substrate. Optionally, said support 4 further comprises control components of the supply current of said light emitting components 6.
  • Said light emitting components 6 are, for example, light emitting diodes. They emit a white light, because the white diodes are the most powerful at the moment.
  • Said light emitting components 6, in this case said light-emitting diodes, are arranged so as to define a transmission surface 10 of said light beam on a face 12 of said support 4.
  • said light-emitting components are arranged on the same side of the support 4, in a dedicated area thereof. That is, the beam emitted by said emitting surface 10 has a light intensity which is not necessarily completely homogeneous.
  • Said emission surface may in particular have more illuminating areas than others.
  • Said light emitting components 6, however, are arranged sufficiently close inside said emitting surface 10 to avoid giving the impression of the existence of non-illuminating areas between the latter.
  • Said light source 2 can be configured so that said transmission surface 10 has a longitudinal extension axis. In other words, said emission surface 10 has a preferred direction of elongation. In other words, said emission surface is neither square nor circular. It is here substantially rectangular.
  • said device is configured to direct said beam towards said guide 2.
  • the light source (s) 1 are here arranged opposite one or more input faces 14 of the light guide 2 so that that said light beam emitted by the or each of said light sources 1 penetrates inside said light guide 2 by said at least one input face 14 of said guide 2.
  • Said light guide 2 is configured to guide the light entering through the input face (s) 14 up to an exit face 16 of the guide 2, in particular by total reflection.
  • said guide 2 comprises a reflection face 18, provided with optical units, not illustrated, allowing part of the light rays propagating in the guide 2, to exit through the output face 16, provided opposite to said reflection face 18.
  • Said light guide 2 is here a linear guide of rectilinear or curved longitudinal shape, according to the needs of use of the device 1.
  • said guide 2 is in the form of a cord or elongated element, it is that is, an element having a cross-section whose dimensions are much smaller than its length.
  • Devices equipped with such guides 2 are particularly interesting because they can be arranged in multiple ways, in a minimum of space. It is thus possible to give guides 2 original shapes, and allow aesthetic creations with innovative design.
  • Said light guide 2 here comprises at least one emitting portion 20 configured to emit light outside said guide 2, and at least one guiding portion 22, located between said source 1 and said emitting portion 20, configured to transmit said beam from said source 1 to said emitting portion 20.
  • the at least one input face 12 of said guide 2 is at the level of said guide portion or portions 22 while said reflection face (s) 18 and exit face 16 are located at said emitting portion 20.
  • Said emitting portion 20 has, for example, a circular section and / or constant, disregarding the optical patterns made.
  • the device comprises a single said light source 1 and said guide 2 comprises a single said guide portion 22.
  • Said emitting portion 20 is here in the continuity of said guide portion 22.
  • Said guide portion 22 and said emitting portion 20 thus have an identical section, for example circular.
  • said device comprises several said light sources 1 and said light guide 2 comprises a plurality of guide portions 22, situated between each of said sources 1 and said emitting portion 20.
  • said light guide 2 comprises a plurality of guide portions 22, situated between each of said sources 1 and said emitting portion 20.
  • two light sources are provided. 1 and two guide portions 22, respectively associated.
  • Said guide portions 22 advantageously have a transverse axis of elongation, oriented along the longitudinal axis of the emission surface 10 of said light sources 1.
  • said guide portions 22 are also elongate in a given direction and their direction of elongation is matched to that of the emission surface of the corresponding light sources 1.
  • the section of the one or more guide portions 22 is, for example, rectangular, as in FIGS. Figures 4 and 5 , and / or oval, as figures 6 and 7 .
  • said guide portions 22 comprise an interface zone 24 common with said emitting portion 20, located in particular at an input face 26 of said emitting portion 20.
  • said guide 2 comprises an interface zone 24 between said guide portions 22, defined by a plane.
  • the guide 2 has a convergence zone situated upstream of said emitting portion 20.
  • Said plane 28 is, for example, perpendicular to the input face 26 of said emitting portion 22.
  • Said guide portions are advantageously symmetrical to on both sides of said plane in said convergence zone.
  • Said guide portions 22 are here, for example, of circular and / or constant section, before the convergence zone.
  • the coupling portion 32 formed by the joining of said guide portions 22 in said convergence zone may also be of constant section to said input face 26 of the emitting portion 20, that is to say, to be of section similar to the profile of said interface area 28.
  • the latter may have a symmetrical shape vis-à-vis an axis of symmetry of said inlet face 26 of the emitting portion 20, including one of its diameters.
  • said guide portions 22 converge at the same point on the surface of said input face 26 of the emitting portion 20, in particular its center. According to another configuration, they converge at two distinct points of said input face 26 of the emitting portion 20, for example, about 2 mm apart.
  • each guide portion 22 comprises an interface zone 30 with said emitting portion 20, in particular its input face 26.
  • Said interface zones 30 are here distinct from one another, for example contiguous. In this way, the reduction of optical losses is promoted.
  • Said interface zones 30 may be symmetrical with respect to each other with respect to an axis of symmetry of said input face 26 of the emitting portion 20, in particular one of its diameters.
  • said interface zone or zones 24, 30 are centered on said input face 26 of said transmitting portion 2. Such a characteristic also contributes to reducing the optical losses.
  • each of said guide portion 22 will have a smaller section than that of said transmitting portion 20. More precisely, here, the surface of said interface zone 24, according to the embodiment of the Figures 2 and 3 , is smaller than the section of the transmitting portion. In other words, the section of said coupling portion 32 is smaller than the section of the emitting zone 20.
  • the invention further relates to a lighting and / or signaling unit comprising one or more devices as described above.
  • Said housing may include other types of lighting and / or signaling devices so as to combine several optical functions.

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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)
EP13194055.3A 2012-11-30 2013-11-22 Beleuchtung und/oder Signalisierungsvorrichtung, insbesondere für Fahrzeug Withdrawn EP2738448A3 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1261511A FR2998942B1 (fr) 2012-11-30 2012-11-30 Dispositif d'eclairage et/ou de signalisation, notamment pour vehicule automobile

Publications (2)

Publication Number Publication Date
EP2738448A2 true EP2738448A2 (de) 2014-06-04
EP2738448A3 EP2738448A3 (de) 2017-10-18

Family

ID=47628268

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13194055.3A Withdrawn EP2738448A3 (de) 2012-11-30 2013-11-22 Beleuchtung und/oder Signalisierungsvorrichtung, insbesondere für Fahrzeug

Country Status (4)

Country Link
US (1) US20140153272A1 (de)
EP (1) EP2738448A3 (de)
CN (1) CN103851502A (de)
FR (1) FR2998942B1 (de)

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DE102014004698B3 (de) * 2014-03-31 2015-08-06 Matthias Ebel Beleuchtung für ein zumindest teilweise muskelbetriebenes Fahrzeug bzw. dessen Anhänger mittels Lichtführungselementen, gesteuert durch ein mobiles Endgerät bzw. Smartphone oder durch eine zentrale Lichtquelle
FR3031793B1 (fr) * 2015-01-15 2017-01-27 Valeo Iluminacion Sa Dispositif lumineux de vehicule dans lequel un guide de lumiere supporte un autre guide de lumiere
FR3036774B1 (fr) * 2015-05-27 2019-04-05 Valeo Vision Belgique Dispositif lumineux, notamment pour vehicule automobile, et boitier d'eclairage comprenant un tel dispositif
FR3041741B1 (fr) * 2015-09-30 2017-11-24 Valeo Iluminacion Sa Dispositif optique et systeme de signalisation et/ou d'eclairage pour un vehicule automobile
CN108613125B (zh) * 2016-12-23 2023-11-21 市光法雷奥（佛山）汽车照明系统有限公司 用于机动车辆的发光装置
US11085604B2 (en) * 2017-09-12 2021-08-10 Lumileds Llc Holder for vehicle signaling light

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Also Published As

Publication number Publication date
FR2998942B1 (fr) 2018-08-17
CN103851502A (zh) 2014-06-11
US20140153272A1 (en) 2014-06-05
EP2738448A3 (de) 2017-10-18
FR2998942A1 (fr) 2014-06-06

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