EP3301351B1 - Monoblock-halterung für leuchtvorrichtung mit mikrospiegel-matrix - Google Patents

Monoblock-halterung für leuchtvorrichtung mit mikrospiegel-matrix

Info

Publication number
EP3301351B1
EP3301351B1 EP17192239.6A EP17192239A EP3301351B1 EP 3301351 B1 EP3301351 B1 EP 3301351B1 EP 17192239 A EP17192239 A EP 17192239A EP 3301351 B1 EP3301351 B1 EP 3301351B1
Authority
EP
European Patent Office
Prior art keywords
optical
microsystem
light
forming
support
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
EP17192239.6A
Other languages
English (en)
French (fr)
Other versions
EP3301351A1 (de
Inventor
Joel LI
Sylvain CHANEZ
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 EP3301351A1 publication Critical patent/EP3301351A1/de
Application granted granted Critical
Publication of EP3301351B1 publication Critical patent/EP3301351B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/39—Attachment thereof
    • 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
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/19—Attachment of light sources or lamp holders
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • 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
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/37—Attachment thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
    • F21V29/50—Cooling arrangements
    • F21V29/70—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks
    • F21V29/74—Cooling arrangements characterised by passive heat-dissipating elements, e.g. heat-sinks with fins or blades
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/002—Refractors for light sources using microoptical elements for redirecting or diffusing light
    • 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 field of lighting and light signaling, in particular for motor vehicles. More particularly, the invention relates to a light signaling device capable of producing light pictograms by means of a microelectromechanical system with a matrix of micro-mirrors.
  • the published patent document US 2015/0175054 A1 discloses a lighting device for a motor vehicle headlight.
  • the device comprises a laser-type light source, a microelectromechanical system serving as a deflector for the laser light, a phosphor-type luminophore element capable of converting the monochromatic light reflected by the deflector, and an optical device comprising several lenses receiving the white light coming from the luminophore element.
  • the deflector can be controlled so as to modulate the light image thus produced.
  • the device comprises a support for supporting these different elements.
  • the support is made up of several parts assembled together, directly or indirectly, for example via the housing of the device or the headlight.
  • the invention aims to overcome at least one of the drawbacks of the aforementioned state of the art. More particularly, the invention aims to propose a solution ensuring precise positioning of the optical components of a light device comprising a microelectromechanical system provided with one or more mirrors.
  • the invention relates to a light device according to claim 1.
  • the support comprises a single-piece body, preferably made of aluminum, said body forming the reception areas for the light source(s), the optical shaping device and the optical projection device.
  • the cavity is delimited by the reception zone of the optical shaping device and the reception zone of the optical projection device.
  • the light source(s), the optical shaping device and the microsystem form a first optical axis
  • said microsystem and the optical projection device form a second optical axis, the angle between said optical axes being between 40° and 65°, preferably between 45° and 60°.
  • the light source(s) are of the light-emitting diode type on a plate arranged on a radiator fixed to the receiving area of said light source(s).
  • the light source(s), of the light-emitting diode type are arranged via a base directly on the radiator fixed to the receiving area of said light source(s).
  • the optical shaping device comprises a biconvex lens and/or the projection device comprises a biconvex lens and a biconcave lens.
  • the or each of the lenses of the optical device(s) is held in place by a flange, fixed for example by screwing, gluing, welding, crimping, riveting, by means of dowels or rivets, or any other fixing means, or by the combination of two or more of these means.
  • the optical shaping device has a diameter greater than twice, preferably three times, that of the optical projection device.
  • the microsystem is on a printed circuit board, said board being fixed to the support so as to press said microsystem against the receiving area of said microsystem.
  • the light device is a rear signaling light capable of forming pictograms in the light beam produced, said pictograms being a function of programming of the microsystem.
  • the measures of the invention are interesting in that they make it possible to ensure exact positioning of the various components, including the microelectromechanical system while it is on a printed circuit board.
  • the light device 2 is in this case a light signaling device for a motor vehicle. It essentially comprises a support 4, optical components arranged on the support 4 and a printed circuit board 6 with electronic components and an electromechanical optical microsystem 8.
  • the latter comprises a matrix of micro-mirrors capable of being individually pivotally controlled.
  • Such a microsystem is commonly called a micro-mirror matrix or DMD (acronym for “Digital Micromirror Device”).
  • DMD digital Micromirror Device
  • Each mirror can take two positions: it can tilt by 10 to 15° along the same axis so as to reflect the light either towards a diffusion lens or towards an absorbing surface. It is said to switch “ on ” or “off”, This regime is therefore binary.
  • Such a microsystem is in itself well known to those skilled in the art.
  • microelectromechanical system fixed to the printed circuit board can then be fixed to the support so that the microelectromechanical system is under pressure on the pads 28.3, thus ensuring contact and, therefore, exact positioning in the direction perpendicular to the face 10.3 of the body 10.
  • Means for positioning the board, in the plane of said board, can be provided, such as in particular pins passing through orifices in the board and in the body 10 at the level of the face 10.3.
  • the diaphragm 24 can be observed in the cavity 30 as well as its method of fixing.
  • the tab 24.1 forming the diaphragm comprises at its end opposite the orifice 24.2 two orifices 24.3 cooperating with positioning rods embedded in the body. It also comprises a fixing orifice 24.4 central relative to the positioning orifices 24.3, said orifice receiving a fixing screw engaging with the body 10.
  • the body 10 comprises in the cavity 30 a recess forming a bearing surface for the tongue 24.1, allowing the latter to pass under the element 28 (according to the point of view of the figure 3 ).
  • the orifice 24.2 is located at the end of the tab 24.1 which is located on the side of the shaping lens 20, so as to avoid any obstruction of the light beam propagating from the shaping lens 20 towards the microelectromechanical system.
  • the proximity between this beam and the edge of the tab 24.1 at the orifice 24.2 is visible at the figure 2 .
  • FIG 4 corresponds to the figure 3 , where however the element 28 is absent.
  • the first lens 22.1 of the optical projection device 22 is held in place on the body 10 by means of a first flange 32.
  • This may have an open profile, in this case U-shaped, with the opening directed towards the shaping lens 20.
  • the shaping lens 20 and the first lens 22.1 are in fact very close to each other to the point that no space is available for a portion of flange between the two lenses.
  • the first flange 32 is advantageously fixed to the body 10 by screws engaging in threaded holes made in said body.
  • the shaping lens 20 and the second lens 22.2 are placed from outside the body by insertion into the respective receiving areas.
  • the first lens 22.1 is, for its part, placed via the cavity 30.

Landscapes

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

Claims (13)

  1. Leuchtvorrichtung (2), insbesondere für ein Kraftfahrzeug, umfassend:
    - einen Träger (4);
    - einen Kühlkörper (12) mindestens eine Lichtquelle (16) tragend, die auf dem Träger (4) angeordnet ist;
    - eine optische Vorrichtung (20) zum Formen des von der Lichtquelle oder den Lichtquellen (16) emittierten Lichts, wobei die Vorrichtung auf dem Träger (4) angeordnet ist;
    - ein elektromechanisches Mikrosystem (8) mit mindestens einem Spiegel, der die von der optischen Formungsvorrichtung ausgehenden Strahlen empfangen kann, wobei das Mikrosystem auf dem Träger (4) angeordnet ist; und
    - eine optische Projektionsvorrichtung (22), die das von dem Spiegel oder den Spiegeln des elektromechanischen Mikrosystems (8) reflektierte Licht empfangen kann, wobei die Vorrichtung auf dem Träger (4) angeordnet ist;
    wobei der besagte Träger (4) eine Aufnahmezone für das elektromechanische Mikrosystem (8) umfasst
    wobei der besagte Träger (4) einen Körper (10) umfasst, umfassend:
    - eine Aufnahmezone (10.1) für den Kühlkörper (12), der mindestens eine Lichtquelle (16) trägt;
    - eine Aufnahmezone (10.2) für die optische Vorrichtung zum Formen des von der Lichtquelle oder den Lichtquellen (16) emittierten Lichts; und
    - eine Aufnahmezone (10.4) für die optischen Projektionsvorrichtung (22), die die von dem Spiegel oder den Spiegeln des elektromechanischen Mikrosystems (8) reflektierten Strahlen empfängt;
    dadurch gekennzeichnet, dass
    der Körper (10) aus einem einzigen Stück, vorzugsweise aus Aluminium, gefertigt ist;
    dass der Körper (10) einen Hohlraum (30) mit einer Öffnung bildet; und
    dass der Träger (4) ein Element (28) umfasst, das durch eine Platte (28.1) gebildet ist, die am Körper (10) befestigt werden kann, um den Hohlraum (30) teilweise abzudichten,
    wobei die Platte (28.1) in einem mittleren Abschnitt mit einer Öffnung (28.2) versehen ist, die dazu bestimmt ist, Licht von der optischen Formungsvorrichtung (20) zum optischen Teil des elektromechanischen Mikrosystems (8) gelangen zu lassen, das vor der besagten Öffnung (28.2) positioniert ist,
    wobei die Platte (28.1) eine Außenfläche um die besagte Öffnung (28.2) herum umfasst, wobei die Außenfläche die Aufnahmezone für das Mikrosystem (8) bildet.
  2. Leuchtvorrichtung (2) nach Anspruch 1, dadurch gekennzeichnet, dass der Hohlraum (30) mit einer Antireflexions- und/oder Absorptionsbeschichtung, vorzugsweise schwarz, bedeckt ist.
  3. Leuchtvorrichtung (2) nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass der Hohlraum (30) durch die Aufnahmezone (10.2) für die optische Formungsvorrichtung und die Aufnahmezone (10.4) für die optische Projektionsvorrichtung (22) begrenzt ist.
  4. Leuchtvorrichtung (2) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass mindestens eine, vorzugsweise jede, der Aufnahmezonen (10.2, 10.4) für die optische Formungsvorrichtung und die optische Projektionsvorrichtung (22) eine im Träger (4) ausgebildete Öffnung und eine Schulter um die besagte Öffnung aufweist.
  5. Leuchtvorrichtung (2) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass sie innerhalb des Hohlraums (30) eine freitragende Lasche (24.1) mit einer Öffnung (24.2) aufweist, die dazu bestimmt ist, von dem durch das elektromechanische Mikrosystem (8) reflektierten Licht in Richtung der optischen Projektionsvorrichtung (22) durchquert zu werden.
  6. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lichtquelle oder die Lichtquellen (16), die optische Formungsvorrichtung und das Mikrosystem (8) eine erste optische Achse (26.1) bilden, und das besagte Mikrosystem und die optische Projektionsvorrichtung (22) eine zweite optische Achse (26.2) bilden, wobei der Winkel zwischen den besagten optischen Achsen zwischen 40° und 65°, vorzugsweise zwischen 45° und 60°, liegt.
  7. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Lichtquelle oder die Lichtquellen (16) vom Typ Leuchtdiode auf einer Platine (14) angeordnet sind, die auf einem Kühlkörper (12) befestigt ist, der an der Aufnahmezone (101) für die besagte Lichtquelle oder besagten Lichtquellen (16) befestigt ist.
  8. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die optische Formungsvorrichtung eine Formungslinse (20) umfasst, die bikonvex ist, und/oder die Projektionsvorrichtung (22) eine erste Linse (22.1) umfasst, die bikonvex ist, und eine zweite Linse (22.2), die bikonkav ist.
  9. Leuchtvorrichtung (2) nach Anspruch 8, dadurch gekennzeichnet, dass die oder jede der Linsen (20, 22.1, 22.2) einer oder aller optischen Formungsvorrichtungen oder der optischen Projektionsvorrichtung (22) durch einen Flansch (32, 34, 36) gehalten wird.
  10. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die optische Formungsvorrichtung einen Durchmesser aufweist, der mehr als zweimal so groß, vorzugsweise dreimal so groß, wie der der optischen Projektionsvorrichtung (22) ist.
  11. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass das elektromechanische Mikrosystem (8) auf einer Leiterplatte (6) angeordnet ist, wobei die Leiterplatte am Träger (4) befestigt ist, um das Mikrosystem gegen die Aufnahmezone für das besagte Mikrosystem zu drücken.
  12. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass es sich um ein Hecksignallicht handelt, das in der Lage ist, Piktogramme im erzeugten Lichtstrahl zu bilden, wobei die Piktogramme eine Funktion einer Programmierung des Mikrosystems sind.
  13. Leuchtvorrichtung (2) nach einem der vorhergehenden Ansprüche, bei der das Element (28) Stifte (28.3) umfasst, die Auflageflächen für das elektromechanische Mikrosystem (8) bilden.
EP17192239.6A 2016-09-28 2017-09-20 Monoblock-halterung für leuchtvorrichtung mit mikrospiegel-matrix Active EP3301351B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1659227A FR3056685B1 (fr) 2016-09-28 2016-09-28 Support monobloc pour dispositif lumineux avec matrice de micro-miroirs

Publications (2)

Publication Number Publication Date
EP3301351A1 EP3301351A1 (de) 2018-04-04
EP3301351B1 true EP3301351B1 (de) 2025-10-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP17192239.6A Active EP3301351B1 (de) 2016-09-28 2017-09-20 Monoblock-halterung für leuchtvorrichtung mit mikrospiegel-matrix

Country Status (4)

Country Link
US (1) US10619818B2 (de)
EP (1) EP3301351B1 (de)
CN (1) CN107869695B (de)
FR (1) FR3056685B1 (de)

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CN107869695B (zh) 2022-06-24
US10619818B2 (en) 2020-04-14
FR3056685B1 (fr) 2021-01-15
FR3056685A1 (fr) 2018-03-30
EP3301351A1 (de) 2018-04-04
CN107869695A (zh) 2018-04-03

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