EP2711612B1 - Modul für eine Vorrichtung zur Beleuchtung und/oder Signalisierung für Fahrzeuge, die eine Linse und Lichtquellen umfasst - Google Patents

Modul für eine Vorrichtung zur Beleuchtung und/oder Signalisierung für Fahrzeuge, die eine Linse und Lichtquellen umfasst Download PDF

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Publication number
EP2711612B1
EP2711612B1 EP13185229.5A EP13185229A EP2711612B1 EP 2711612 B1 EP2711612 B1 EP 2711612B1 EP 13185229 A EP13185229 A EP 13185229A EP 2711612 B1 EP2711612 B1 EP 2711612B1
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EP
European Patent Office
Prior art keywords
lens
sources
module according
produce
module
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EP13185229.5A
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English (en)
French (fr)
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EP2711612A1 (de
Inventor
Jean-Luc Meyrenaud
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
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Valeo Vision SAS
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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
    • 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
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • 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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • 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
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources

Definitions

  • the invention relates to lighting and/or signaling devices for motor vehicles.
  • a headlamp capable of producing either a main beam or a daytime type beam, using the same light source and the same lens.
  • the source is formed by a filament lamp or a discharge lamp.
  • the projector has a filter mounted to move between a position in which it intercepts the light rays from the source and a position in which it leaves them free. Two different beams are therefore obtained by means of the same optical unit.
  • JP2007109532A describes a light module comprising light sources arranged on a set of aligned focal points of a lens unit.
  • An object of the invention is to produce two types of beams by means of a device without resorting to such a mechanism for passing from one beam to the other.
  • an optical module according to claim 1 is provided according to the invention.
  • the beam produced by the module is determined.
  • the LEDs allow the module to be made in a compact and economical form. And there is no need to provide the module with a mechanism for the beam change, which avoids the problems of assembly, adjustment and longevity associated with it.
  • At least one of the light sources has a light emission axis, this axis passing through the lens.
  • At least one of the light sources is arranged so that the beam which it emits enters directly into the lens.
  • At least one of the sources is located at a focal point of the lens.
  • the lens has a line of focal points on which the sources are located.
  • the lens has a light exit face having a section of elliptical shape in at least one vertical plane.
  • the exit of the light rays from the lens in the horizontal planes is favored.
  • the module is arranged to produce, by means of the lens, a beam capable of constituting part, in particular all, of a regulatory beam having no cutoff, in particular a beam of the daytime lighting type.
  • the module is arranged to produce a single beam using all the sources.
  • it is arranged to produce by means of the lens two different lighting beams.
  • a beam of the daytime running light or DRL (Daytime Running Light) type for example, a beam of the daytime running light or DRL (Daytime Running Light) type.
  • the module comprises means for choosing an electric current supply voltage of at least one of the sources between two non-zero values.
  • this source It is thus possible to supply this source with a relatively high voltage when this source is used without the others being switched on or is used with a reduced number of other sources. Conversely, when this source is used with all the other sources or with a large number of sources, its supply voltage can be reduced to obtain a better distribution of the light.
  • the module can include a cover capable of forming a cut in a beam produced by means of the lens.
  • the lenses are two in number and each capable of producing a beam.
  • a lighting and/or signaling device for a vehicle which comprises a first optical module according to the invention.
  • the device further comprises at least one second module arranged to produce a beam supplementing a beam produced by means of the first module to form a cut-off beam.
  • the orthogonal coordinate system X, Y, Z is used below in which the direction Z is vertical and the directions X and Y horizontal, the direction X being parallel to the direction of travel of the vehicle.
  • the device 2 comprises a base module which comprises a single lens 4 and light sources formed by LEDs 6, 8, 10, 12, 14, 16.
  • the LEDs here are six in number but this number is not limiting. It could be equal to two, three, four, five or even be greater than six.
  • the lens has two median planes of symmetry parallel respectively to the X and Y directions and to the X and Z directions
  • the lens has a vertical front face 20 which has an elliptical shape in the vertical sections taken in the planes parallel to the X and Z directions, as shown in figure 1 . That 22 of the two foci of the ellipse which is closest to the face 20 is located on the face 18.
  • the lens thus comprises a line of foci parallel to the direction Y and situated in its median horizontal plane.
  • This elliptical shape which is the same in all the sections rests on a curve which forms the section of the lens in its median horizontal plane.
  • This section can be given various shapes depending on the beams to be produced by the device. This is a parabolic shape. But it could also be an elliptical shape.
  • the elliptical shape of the vertical section makes it possible to orient the light rays which emerge from the lens in horizontal planes or to give them a direction slightly inclined with respect to the horizontal direction.
  • All the sources are aligned along a straight line coinciding with the line of the foci and inscribed in the face 18.
  • Each of the sources is therefore located at the aforementioned focus of the corresponding vertical section of the face 20. All have their emitting face in surface contact with the face 18 so that the latter receives the light coming from each of the LEDs.
  • the source 10 is located on the optical axis 7.
  • the two sources 6 and 8 are located in the left part of the lens while the other three 12, 14 and 16 are located in its right part. Other arrangements of the sources are of course possible.
  • the basic module comprises means 17 for controlling the lighting of the LED 10 and means 19 for controlling the lighting of the other LEDs, common to them. You can therefore choose to light only LED 10, the other LEDs remaining off, or to light all the LEDs at the same time.
  • control means 17 are configured to make it possible to choose the electric current supply voltage of the LED 10 between two non-zero values which are different from each other.
  • the device 2 further comprises at least one complementary module 40 illustrated in figure 1 .
  • This module is completely separate from the base module. It comprises means for producing a lighting beam independent of the beam produced by the base module. These means comprise for example at least one lens 42 and at least one light source 44 such as an LED.
  • This module 40 has the function of producing a beam which complements the beam emitted by the base module to obtain the desired regulatory beam.
  • the base module is capable in this case of producing a choice of two beams 26, 28 illustrated respectively in figures 5 and 6 as they appear on a flat vertical screen perpendicular to the direction X, arranged in front of the device.
  • Beam 26 is a flat or low type beam. It is observed that the device sends little or no light above the horizontal line representing the horizon and in particular no light in the part of this line which adjoins the center of the marker. This beam is formed by turning on the source 10 only, the other LEDs of the device being off. The supply voltage of this source is then given its highest value.
  • the device is arranged so that the beam 26 of the base module and that of the complementary module 40 complement each other to form a cut-off beam.
  • This is, for example, a dipped beam, a main beam or a foglamp beam.
  • one or more complementary modules 40 complete the beam 26 in the upper right part of the screen.
  • one or more complementary modules 40 complete the beam 26 in the upper left and right parts of the screen.
  • the fog lamp beam is produced in a similar way.
  • the other beam 28 is in this case a beam which does not present a cut.
  • This is a daytime running type beam. It is produced by simultaneously lighting up all the leds of the base module. It is observed that the beam extends both below the horizontal axis representing the horizon line and above it, unlike the beam 26. The supply voltage of the source 10 is then given its lowest value among the two aforementioned non-zero values.
  • This beam 28 is produced by means of the basic module alone, without using the complementary module 40 which is switched off.
  • the device according to the invention makes it possible to give the central LED 10 an efficiency comprised for example between 60 and 70%, which is relatively high. It also makes it possible to ensure that the base module has substantially the same appearance for the observer, whether it produces a cut-off beam or a daytime lighting type beam.
  • a second embodiment of the device is illustrated in figures 7 to 10 .
  • the device comprises not one but two lenses 4 distinct from each other but formed in one piece with each other in the present example.
  • the device also comprises a group of LEDs associated specifically with one lenses 4 and another group of LEDs specifically associated with the other lens 4.
  • This time it therefore comprises two basic modules, each module comprising one of the lenses and one of the groups of LEDs.
  • Each base module is otherwise configured in the same way as the base module of the device of the figures 1 to 4 . In particular, it includes the same number of LEDs as the module of the first embodiment, although this is not an obligation.
  • These two basic modules, and in particular the two lenses, are arranged so as to produce on their own respective beams 30 and 32 which may be different from each other and are illustrated in figures 8 and 9 .
  • the difference between the beams can be obtained in particular by giving the two lenses different focal lengths from each other.
  • these two beams are obtained by switching on only the central diode 10 in each base module. These are two flat or low type beams.
  • the device again comprises one or more complementary modules 40 supplying one or more beams forming, in combination with the beams 30 and 32, a cut-off beam such as a dipped beam, a main beam or a fog lamp beam as is the case here.
  • This regulatory beam is therefore formed in particular by the addition of beams 30 and 32.
  • the device is also arranged so that the two base modules used in combination and without the complementary module(s) 40 produce a beam 34 illustrated in figure 10 .
  • This is an uninterrupted beam which is in this case a beam of the daytime lighting type. This time, all the LEDs of each of the base modules are lit, the LEDs 10 being supplied with the lowest voltage among the two possible ones.
  • the add-on(s) are turned off.
  • the entrance face of the lens when it is a question of producing a daytime lighting beam, the entrance face of the lens will be given a sufficient surface, for example approximately 24 cm 2 , to obtain the regulatory photometry of this type of beam.
  • the two lenses can be produced in the form of separate parts.
  • the invention can be implemented to obtain a signaling device such as a direction indicator.
  • the device forms a signaling device and/or a device lighting, it can have one or more other lighting and/or signaling functions than those implemented with the invention, these functions being performed by one or more modules independent of the aforementioned modules.
  • control means capable of controlling the lighting of a group of LEDs independently of the other group of LEDs or of one of the other groups of LEDs. It is also possible to provide individual control means for each LED.

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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)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (12)

  1. Optisches Modul, insbesondere für eine Vorrichtung (2) zur Beleuchtung und/oder Signalisierung für ein Fahrzeug, das Folgendes beinhaltet:
    - eine Linse (4),
    - mindestens zwei Lichtquellen, insbesondere zwei LEDs (6, 8, 10, 12, 14, 16), die gegenüber einer gleichen Fläche (18) der Linse angeordnet sind, und
    - Mittel (17, 19), die es ermöglichen, das Einschalten mindestens einer (10) der Quellen unabhängig von der anderen (6, 8, 12, 14, 16) zu steuern;
    wobei das Modul dazu eingerichtet ist, mit Hilfe der Linse ein Lichtbündel (28; 34) zu produzieren, das dazu fähig ist, einen Teil, insbesondere die Gesamtheit, eines vorschriftsmäßigen Lichtbündels ohne Abschattung zu bilden, insbesondere ein Lichtbündel vom Typ Tagesfahrlicht, wobei die Linse eine Linie von Brennpunkten aufweist, auf der oder in deren Nähe sich die Quellen (6, 8, 10, 12, 14, 16) befinden, wobei mindestens eine der Lichtquellen so eingerichtet ist, dass das Lichtbündel, welches sie emittiert, direkt in die Linse eintritt, dadurch gekennzeichnet, dass die Linse eine Lichtaustrittsfläche (20) aufweist, die in mindestens einer vertikalen Ebene einen elliptischen Querschnitt aufweist, wobei sich derjenige (22) der zwei Brennpunkte der Ellipse, der der Fläche (20) am nächsten ist, auf der Fläche (18) befindet, wobei die Brennpunkte die Linie von Brennpunkten bilden, auf der oder in deren Nähe sich die Quellen befinden,
    wobei diese elliptische Form in allen vertikalen Querschnitten, die durch die zu der X- und Z-Richtung parallelen Ebenen verlaufen, gleich ist und sich auf eine Kurve stützt, welche den Querschnitt der Linse in ihrer horizontalen Mittelebene bildet, wobei die Z-Richtung vertikal ist und die X-Richtung horizontal und parallel zu der Fahrtrichtung des Fahrzeugs ist.
  2. Modul nach dem vorhergehenden Anspruch, wobei mindestens eine der Lichtquellen eine Lichtemissionsachse aufweist, wobei diese Achse durch die Linse verläuft.
  3. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, wobei sich mindestens eine der Quellen an einem Brennpunkt (22) der Linse befindet.
  4. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, das dazu eingerichtet ist, mit Hilfe der Linse ein Lichtbündel (26; 30, 32) zu produzieren, das dazu fähig ist, einen Teil eines vorschriftsmäßigen Lichtbündels mit Abschattung zu bilden.
  5. Modul nach dem vorhergehenden Anspruch, das dazu eingerichtet ist, das Lichtbündel (26; 30, 32), das dazu fähig ist, einen Teil eines vorschriftsmäßigen Lichtbündels mit Abschattung zu bilden, mit Hilfe einer der Quellen zu produzieren, während die eine oder die anderen Quellen ausgeschaltet sind.
  6. Modul nach einem der vorhergehenden Ansprüche, das dazu eingerichtet ist, das Lichtbündel (28; 34), das dazu fähig ist, einen Teil, insbesondere die Gesamtheit, eines vorschriftsmäßigen Lichtbündels ohne Abschattung zu bilden, mit Hilfe aller Quellen zu produzieren.
  7. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, das dazu eingerichtet ist, mit Hilfe der Linse zwei unterschiedliche Lichtbündel zur Beleuchtung (26, 28; 30, 32, 34) zu produzieren.
  8. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, das Mittel (17) beinhaltet, um eine Spannung für die Stromversorgung für mindestens eine der Quellen aus zwei Werten ungleich null auszuwählen.
  9. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, das eine Abdeckung (24) beinhaltet, die dazu fähig ist, in einem Lichtbündel, das mit Hilfe der Linse produziert wird, eine Abschattung zu bilden.
  10. Modul nach mindestens einem beliebigen der vorhergehenden Ansprüche, wobei die Anzahl der Linsen (4) zwei beträgt und diese dazu fähig sind, jeweils ein Lichtbündel zu produzieren.
  11. Vorrichtung zur Beleuchtung und/oder Signalisierung für ein Fahrzeug, dadurch gekennzeichnet, dass sie ein erstes optisches Modul nach einem beliebigen der vorhergehenden Ansprüche umfasst.
  12. Vorrichtung nach dem vorhergehenden Anspruch, die ferner mindestens ein zweites Modul (40) beinhaltet, das dazu eingerichtet ist, ein Lichtbündel zu produzieren, das ein mit Hilfe des ersten Moduls produziertes Lichtbündel ergänzt, um ein Lichtbündel mit Abschattung zu bilden.
EP13185229.5A 2012-09-25 2013-09-19 Modul für eine Vorrichtung zur Beleuchtung und/oder Signalisierung für Fahrzeuge, die eine Linse und Lichtquellen umfasst Active EP2711612B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1258970A FR2995973B1 (fr) 2012-09-25 2012-09-25 Dispositif d'eclairage et/ou de signalisation pour vehicule comprenant une lentille et des sources

Publications (2)

Publication Number Publication Date
EP2711612A1 EP2711612A1 (de) 2014-03-26
EP2711612B1 true EP2711612B1 (de) 2023-04-26

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EP13185229.5A Active EP2711612B1 (de) 2012-09-25 2013-09-19 Modul für eine Vorrichtung zur Beleuchtung und/oder Signalisierung für Fahrzeuge, die eine Linse und Lichtquellen umfasst

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US (1) US9200760B2 (de)
EP (1) EP2711612B1 (de)
JP (1) JP6257980B2 (de)
FR (1) FR2995973B1 (de)

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DE102013114264B4 (de) * 2013-12-18 2023-12-07 HELLA GmbH & Co. KGaA Scheinwerfer für Fahrzeuge
EP3173688B1 (de) * 2014-07-23 2021-06-09 Koito Manufacturing Co., Ltd. Leuchte und scheinwerfer für fahrzeug
JP6443722B2 (ja) * 2014-07-30 2018-12-26 パナソニックＩｐマネジメント株式会社 照明装置及び照明装置を備える自動車
FR3048059B1 (fr) * 2016-02-22 2022-08-05 Valeo Vision Dispositif de projection de faisceau lumineux muni d'une matrice de sources de lumiere, module d'eclairage et projecteur muni d'un tel dispositif
US10317030B2 (en) * 2017-10-24 2019-06-11 Grote Industries, Llc Dual high-beam and low-beam vehicle headlamp
EP3505818B1 (de) * 2017-11-16 2023-01-04 Stanley Electric Co., Ltd. Fahrzeuglampe und beleuchtungssteuerschaltung einer fahrzeuglampe
FR3138497A1 (fr) * 2022-07-28 2024-02-02 Valeo Vision Module lumineux pour dispositif d’éclairage d’un véhicule

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Publication number Priority date Publication date Assignee Title
DE10110132A1 (de) * 2001-02-21 2003-01-16 German Gresser Automobil-Scheinwerfer
JP2006156301A (ja) * 2004-12-01 2006-06-15 Ichikoh Ind Ltd 車両用前照灯ユニット
JP2007109532A (ja) * 2005-10-14 2007-04-26 Stanley Electric Co Ltd 車両用灯具
EP2752615A1 (de) * 2011-09-01 2014-07-09 Koito Manufacturing Co., Ltd. Automobilscheinwerfervorrichtung

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US20140085920A1 (en) 2014-03-27
FR2995973A1 (fr) 2014-03-28
JP2014067714A (ja) 2014-04-17
EP2711612A1 (de) 2014-03-26
US9200760B2 (en) 2015-12-01
JP6257980B2 (ja) 2018-01-10
FR2995973B1 (fr) 2019-04-05

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