EP2947380B1 - Licht-emissionsmodul mit elektrolumineszenzdiode und blende - Google Patents

Licht-emissionsmodul mit elektrolumineszenzdiode und blende Download PDF

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Publication number
EP2947380B1
EP2947380B1 EP15168261.4A EP15168261A EP2947380B1 EP 2947380 B1 EP2947380 B1 EP 2947380B1 EP 15168261 A EP15168261 A EP 15168261A EP 2947380 B1 EP2947380 B1 EP 2947380B1
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EP
European Patent Office
Prior art keywords
light
collector
emitting module
module according
indexing
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
EP15168261.4A
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English (en)
French (fr)
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EP2947380A3 (de
EP2947380A2 (de
Inventor
Jean-Marie Flatres
Philippe Lopez
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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Publication date
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Publication of EP2947380A2 publication Critical patent/EP2947380A2/de
Publication of EP2947380A3 publication Critical patent/EP2947380A3/de
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Publication of EP2947380B1 publication Critical patent/EP2947380B1/de
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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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—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
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades

Definitions

  • the present invention relates to light emitting modules, and more particularly to modules in which the light source is a light emitting diode.
  • Such diodes are carried by a printed circuit board which allows the transmission of the control instructions for switching on and off the diode by an on-board control module.
  • these printed circuit boards are mounted on support means capable of dissipating, in particular by appropriate ribbing, the significant thermal radiation specific to the operation of the light-emitting diodes.
  • the light emitting module is arranged so that the diode emits light towards a collector whose arrangement and coating allows reflection of the rays so that they leave the light emitting module according to a desired transmission axis.
  • the collector may be substantially elliptical and the diode placed at its first focus so that a lens placed at the second focus allows the output of light rays parallel to the optical axis of the assembly.
  • the diode is a point source of light, that is to say that it emits in a precise beam, some rays are emitted with an angular dispersion and it is impossible to ensure that the reflection in the collector of these scattered rays leads to an emission output along said desired axis.
  • the emission modules it is known to use a concealer, that is to say a concealed cover which directly blocks the scattered light rays at the output of the diode. It is appropriate in these modules to ensure the position of the concealer both with respect to the diode and with respect to the collector so that the concealer only blocks the scattered rays that can not be reflected correctly inside the module , and that it does not block other rays, which could decrease the photometric performance of the light emitting module.
  • the document EP2573456 A1 discloses a module light emission in which a shield is screwed onto the heat sink of the module.
  • the invention proposes a light emitting module in which the position of the occluder, and the means provided to ensure this position, are specific.
  • the invention proposes a light emitting module, comprising a light-emitting diode which is able to emit light rays in optical deflection means of a collector and which is carried by a printed circuit board, said module comprising a concealer arranged in the vicinity of the diode, for blocking rays emitted directly by said diode.
  • This module is remarkable in that the collector comprises a fixing plate which allows in particular the attachment of the printed circuit board and the diode relative to the optical deflection means and the shield is held in position relative to the light emitting diode by clamping between the printed circuit board and the collector mounting plate.
  • fixing means which are particularly simple to implement, and which allow the occultor to be correctly positioned with respect to the collector and in particular the optical deflection means and with respect to the printed circuit board, and thus by compared to the diode.
  • these optical deflection means are reflecting surfaces, for example a support coated with a layer of reflective material.
  • the reflective surface can thus be obtained by aluminizing a support, for example a plastic support.
  • the concealer comprises a securing frame to the collector and an occulting wall of the light rays emitted by said light-emitting diode, the concealer being sandwiched between the printed circuit board and the fixing plate of the light-emitting diode. manifold in the area of the attachment frame.
  • the occultation wall which extends to the right of the diode and which forms the main blocking wall of scattered light rays, does not participate in the fixing of the occulter. In this way, the occultation function is optimized.
  • the attachment frame comprises three uprights, among which a central upright on either side of which lateral uprights are arranged.
  • the frame may further comprise indexing fins, which may in particular be arranged at the free end of the lateral uprights when the frame has.
  • indexing fins which may in particular be arranged at the free end of the lateral uprights when the frame has.
  • the occluder may be a folded part, formed of a metal sheet.
  • the occluder may have a thickness of between 0.3 and 0.5 mm.
  • the blackout can be covered on its inner face facing the diode, a black matte coating.
  • a light emitting module 2 comprises a collector 4, a printed circuit board 6 carrying a light-emitting diode 8 and an associated radiator 10 for cooling the printed circuits.
  • This module further comprises a concave 12 arranged next to the diode.
  • the collector 4 comprises optical deflection means and a fixing plate 16 made integral with these optical deflection means and which allows in particular the attachment of the radiator, the printed circuit board and the diode relative to the optical deflection means.
  • the optical deflection means take the form of a substantially elliptical wall 18 delimited in a vertical and longitudinal plane (that is to say in the plane of the representation of the figure 2 ) by an upper edge 20 secured to the fixing plate, and by a free lower edge 22.
  • the elliptical wall has a reflective inner surface to achieve the deviation of light rays emitted.
  • the elliptical wall has two foci among which a first home where the diode is located and a second home where there is an optical element, lens type and not shown here, to form the light rays at the output of the module.
  • the attachment plate 16 extends transversely the upper edge of the elliptical wall. It is advantageously integral with the elliptical wall but it will be understood that the latter can be attached to the fixing plate.
  • the fixing plate comprises, from one axial end to another, a joining edge 24 with the elliptical wall, a central clearance zone 26 and a plate 28 cut at its center to form two fastening tabs 30.
  • an upper face 32 and a lower face 34 are distinguished, the upper face being the face turned away from the optical deflection means and able to receive the radiator 10 and the printed circuit board 6.
  • the junction edge 24 has in the plane of the plate, perpendicular to the upper edge of the optical deflection means, a curved shape, substantially a circular portion oriented so that the ends 36 are recessed with respect to the clearance zone 26.
  • a barrel 38 is integrally formed with the upper face of the plate, to extend projecting from the joining edge.
  • the barrel has at its free end a boss 39.
  • the central clearance zone 26 there are two bores 40 of oblong dimensions formed in the thickness of the plate and these two oblong bores are arranged perpendicularly with respect to each other, that is to say that the long axes of the oblong bores are perpendicular.
  • the oblong bores here participate in the fixing from below of the plate by relative to the module, with clamping means not shown here, the fixing holes being on the radiator.
  • the clearance zone has a depth sufficient for the housing of a screw head, as illustrated in FIG. figure 2 .
  • the bore 42 is able to allow passage to peripheral fixing screws of the collector on the radiator
  • the indexing pad 44 is adapted to cooperate with indexing means of complementary shape carried by the radiator
  • the pin 46 is adapted to serve as a support for the printed circuit board carried by the radiator.
  • the light-emitting diode 8 is carried by the printed circuit board 6, and the latter is mounted relative to the collector so that the diode is in line with the optical deflection means, in the vicinity of the focus of the first reflector.
  • the light rays emitted by the diode are mainly directed inside the means of optical ray deflection.
  • the diode is positioned at a sufficient distance from the collector to avoid the formation of an electric arc, which can be formed when a light emitting diode is too close to an aluminized surface.
  • the printed circuit board 6 comprises a series of electrical circuits and a control module, said electrical circuits being able to transmit to the diode ignition control or extinguishing instructions.
  • the plate comprises five through holes, among which a first hole 48 and a second hole 50 of a first diameter, substantially equal to the diameter of the indexing studs 44, a third hole 52 and a fourth hole 54 of a second sufficiently large diameter. to allow the passage of a peripheral fixing screw 55, and a fifth hole 56 which is arranged in the center of the plate and which has an oblong shape. This fifth hole allows the passage of a central fixing screw 57 of the plate on the radiator.
  • the radiator which has substantially a parallelepiped shape, has, on one of these faces, a support face 58 of the printed circuit board 6. This is pressed against the radiator via the central fastening screw 57.
  • a central threaded bore 60 made in the thickness of the radiator from the support face 58 as visible on the figure 2 , allows to receive this screw.
  • the radiator also plays a role in plating the printed circuit board on the collector and for this purpose it comprises two peripheral threaded bores, not visible in the figures, suitable for extend facing fixing lugs 30 when the radiator is attached to the plate, and two straight bores not threaded, also not visible, each respectively disposed next to one of the peripheral threaded bores.
  • the peripheral tapped bores are adapted to receive the peripheral fixing screws and that the right bores are able to receive the indexing pads 44.
  • the radiator 10 has grooves 64 which function as heat exchangers to allow cooling of the printed circuit board and the associated diode.
  • the occluder 12 comprises a frame 66 and an occultation wall 68 substantially perpendicular to the frame.
  • the frame is formed by three uprights, including a central base upright 70 which is extended at each of its lateral ends by lateral uprights 72 which each form an angle of approximately 45 ° with the base upright.
  • the lateral uprights carry indexing vanes 74 which extend perpendicularly to the frame, so as to be substantially parallel to the concealment wall.
  • These fins are pierced at their center and the resulting pair of holes 76 form complementary fastening means of the barrels 38 of the manifold so as to form a male and female fastener assembly.
  • the attachment zone is offset transversely on either side of the occultation zone, located more centrally to be opposite the diode.
  • the occluder is formed from a metallized sheet, for example aluminum, and for example a thickness between 0.3 and 0.5 mm. Furthermore, the sheet may be covered with a matt coating, over the entire inner face 78, that is to say that facing the diode, both on the amounts of the frame that on the wall of occultation.
  • the printed circuit board 6 and the associated diode 8 are mounted on the radiator 10.
  • the printed circuit board is positioned against the support face 58 of the radiator. comparing the central tapped bore 60 of the radiator and the fifth oblong hole of the printed circuit board.
  • the central fixing screw 57 is inserted into the central threaded bore and the screw head bears against the printed circuit board to press against the radiator.
  • the central fixing screw in addition to its role of holding in position, allows the grounding of the assembly. It is observed that this assembly leaves a freedom of translation of the plate in a direction along the support face of the radiator by the presence of the oblong hole in the printed circuit board.
  • the occultor 12 is then placed in place by making the fastening means carried by the fins 74 of this occluder cooperate with the drums 38 carried by the collector.
  • the holes 76 formed at the center of the fins allow the fitting of the occluder around the bosses 39 disposed at the end of the barrels.
  • the height of the stop pins 46 carried by the collector, the height of the drums 38, and the thickness of the indexing vanes of the occluder 12 are determined to form a substantially horizontal receiving plane of the printed circuit board when the cover is in place on the collector, the upper face of the pions and the upper face of the fins of the concealer, when it is attached against the collector, to be located in the same plane.
  • the assembly formed in the first step is then mounted on the collector to grip the concealer between the collector and the printed circuit board. For this purpose, the assembly is lowered against the collector, and the clearance zone 26 allows this descent without interference of the central fixing screw head 57.
  • the indexing studs 44 are initially co-operated with this descent. in the indexing holes 48, 50 and then plays in a second step on the freedom of translation of the printed circuit board so that the indexing studs penetrate into the straight bores formed in the radiator.
  • the bores 42 of the tabs 30 and the holes 48, 50 of the plate 6 are correctly aligned to the right of the tapped holes of the radiator for the passage of the peripheral fixing screws.
  • the weight of the radiator immobilizes the printed circuit board, and it and the barrels carried by the collector make the shield is clamped at its indexing fins.
  • the gravity makes it possible to flatten the indexing fins vertically, which extend substantially horizontally against the collector, and thus to ensure that the position of the concealer and therefore of the concealment wall facing the diode is correctly fixed. carried by the printed circuit board.
  • the light module comprises a concealer whose position is ensured by minimizing the number of reported means, by clamping between a collector carrying means for optical deflection of the rays emitted by a diode, and a carrier plate of said diode.
  • the male and female fastening means capable of setting the occultor 112 in position by relative to the collector 104 are different in that the drums 138 are drilled at their center with a blind hole 80 adapted to receive a pin 82 integral with each of the indexing vanes 174.
  • these pins extend perpendicular to the indexing fins, from the side facing the concealment wall, so as to favor the stable position in which the concealment wall is positioned in the plane of the contact areas between the concealer and the collector.
  • the concealer 112 is sandwiched between the securing plate of the collector 104 and the printed circuit board 106 carried by the radiator 110.

Claims (16)

  1. Lichtemissionsmodul, umfassend eine lichtemittierende Diode (8), die geeignet ist, Lichtstrahlen in Mittel zur optischen Ablenkung zu emittieren, die eine reflektierende Oberfläche eines Kollektors (4) umfassen, und die von einer Leiterplatte (6) getragen wird, wobei das Modul eine Verdeckungseinrichtung (12) umfasst, die angrenzend an die Diode (8) angeordnet ist, um Strahlen zu blockieren, die direkt von der Diode emittiert werden, dadurch gekennzeichnet, dass der Kollektor (4) eine Befestigungsplatte (16) umfasst, die insbesondere die Befestigung der Leiterplatte (6) und der Diode (8) bezogen auf die Mittel zur optischen Ablenkung erlaubt, und die Verdeckungseinrichtung (12) durch Einklemmen zwischen der Leiterplatte (6) und der Befestigungsplatte (16) des Kollektors (4) bezogen auf die lichtemittierende Diode (8) in Position gehalten wird.
  2. Lichtemissionsmodul nach Anspruch 1, dadurch gekennzeichnet, dass die Blende (12) einen Rahmen (66) zur Befestigung am Kollektor und eine Wand zur Verdeckung (68) der Lichtstrahlen, die von der lichtemittierenden Diode (8) emittiert werden, umfasst, wobei die Verdeckungseinrichtung zwischen der Leiterplatte (6) und der Befestigungsplatte (16) des Kollektors (4) im Bereich des Rahmens zur Befestigung eingeklemmt ist.
  3. Lichtemissionsmodul nach Anspruch 2, dadurch gekennzeichnet, dass der Rahmen zur Befestigung (66) drei Stützen umfasst, darunter eine mittlere Stütze (70), auf derer beiden Seiten seitliche Stützen (72) angeordnet sind.
  4. Lichtemissionsmodul nach Anspruch 2 oder 3, dadurch gekennzeichnet, dass der Rahmen ferner Arretierungsflügel (74) umfasst, die insbesondere am freien Ende der seitlichen Stützen (72) angeordnet sind.
  5. Lichtemissionsmodul nach einem der Ansprüche 2 bis 4, dadurch gekennzeichnet, dass die Arretierungsflügel (74) im Wesentlichen parallel zu den Stützen des Befestigungsrahmens (66) und im Wesentlichen parallel zur Verdeckungswand (68) verlaufen.
  6. Lichtemissionsmodul nach einem der Ansprüche 4 bis 5, dadurch gekennzeichnet, dass die Arretierungsflügel (74; 174) und der Kollektor (4; 104) eingreifende und aufnehmende Befestigungsmittel umfassen, die sich ergänzen.
  7. Lichtemissionsmodul nach Anspruch 6, dadurch gekennzeichnet, dass die eingreifenden und aufnehmenden Befestigungsmittel, die sich ergänzen, Stifte (80), die mit den Arretierungsflügeln (174) einstückig ausgebildet sind, und Hülsen (138), die von dem Kollektor (104) abstehen, umfassen, wobei die Stifte geeignet sind, in den Hülsen aufgenommen zu sein.
  8. Lichtemissionsmodul nach Anspruch 6, dadurch gekennzeichnet, dass die eingreifenden und aufnehmenden Befestigungsmittel, die sich ergänzen, von Arretierungsflügeln (74) und Arretierungshülsen (38), die von dem Kollektor (4) abstehen, gebildet sind, wobei die Arretierungsflügel (74) in ihrer Mitte durchbohrt sind, um um die Arretierungshülsen (38) herum gesteckt zu sein.
  9. Lichtemissionsmodul nach Anspruch 7 oder 8, dadurch gekennzeichnet, dass die Hülsen (38; 138) mit dem Kollektor (4; 104) einstückig ausgebildet sind.
  10. Lichtemissionsmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verdeckungseinrichtung (12) ein gefaltetes Teil ist, das aus einem metallischen Blech gebildet ist.
  11. Lichtemissionsmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verdeckungseinrichtung (12) eine Dicke zwischen 0,3 und 0,5 mm aufweist.
  12. Lichtemissionsmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Verdeckungseinrichtung (12) auf ihrer Innenseite (78) die der Diode (8) zugewandt ist, mit einer mattschwarzen Beschichtung bedeckt ist.
  13. Lichtemissionsmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Leiterplatte (6) auf einem Kühlkörper (10) befestigt ist, der Mittel zum Klemmen gegen den Kollektor (4) trägt, so dass die Platte zwischen dem Kühlkörper und dem Kollektor angeordnet ist.
  14. Lichtemissionsmodul nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Mittel zum Klemmen zwei periphere Befestigungsschrauben (55) des Kühlkörpers (10) auf dem Kollektor (4) umfassen, während die Leiterplatte (6) durch eine mittlere Befestigungsschraube (57) am Kühlkörper befestigt ist.
  15. Lichtemissionsmodul nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass die Anschlagstifte (46) auf dem Kollektor (4) vorgesehen sind, um die Leiterplatte (6) in Anlage aufzunehmen.
  16. Lichtemissionsmodul nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass die Höhe der Anschlagstifte (46) in Abhängigkeit von der Höhe der Hülsen (38) und der Dicke der Arretierungsflügel (74) der Verdeckungseinrichtung (12) berechnet wird, so dass die obere Seite der Stifte und die obere Seite der Arretierungsflügel in einer selben Ebene liegen, wenn die Verdeckungseinrichtung an dem Kollektor (4) anliegt.
EP15168261.4A 2014-05-20 2015-05-19 Licht-emissionsmodul mit elektrolumineszenzdiode und blende Active EP2947380B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1454534A FR3021459B1 (fr) 2014-05-20 2014-05-20 Module d'emission de lumiere a diode electroluminescente et occulteur

Publications (3)

Publication Number Publication Date
EP2947380A2 EP2947380A2 (de) 2015-11-25
EP2947380A3 EP2947380A3 (de) 2015-12-23
EP2947380B1 true EP2947380B1 (de) 2018-12-19

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EP15168261.4A Active EP2947380B1 (de) 2014-05-20 2015-05-19 Licht-emissionsmodul mit elektrolumineszenzdiode und blende

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EP (1) EP2947380B1 (de)
FR (1) FR3021459B1 (de)

Families Citing this family (4)

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Publication number Priority date Publication date Assignee Title
US10578267B2 (en) 2016-10-26 2020-03-03 North American Lighting, Inc. Vehicle lamp light assembly
EP3450828A1 (de) * 2017-08-31 2019-03-06 Valeo Iluminacion Beleuchtungsvorrichtung für ein kfz-scheinwerfer
CN111486407A (zh) * 2019-11-30 2020-08-04 华域视觉科技(上海)有限公司 车灯模组、车灯及车辆
FR3122479A1 (fr) * 2021-04-29 2022-11-04 Psa Automobiles Sa Module d’illumination pour projecteur de véhicule automobile

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JP4850743B2 (ja) * 2007-02-13 2012-01-11 株式会社小糸製作所 車両用前照灯
AT510930B1 (de) * 2010-12-15 2013-05-15 Zizala Lichtsysteme Gmbh Led-lichtmodul
JP5811675B2 (ja) * 2011-08-09 2015-11-11 市光工業株式会社 車両用灯具
JP5733129B2 (ja) * 2011-09-20 2015-06-10 市光工業株式会社 車両用灯具
DE102011084890A1 (de) * 2011-10-20 2013-04-25 Automotive Lighting Reutlingen Gmbh Lichtmodul einer Beleuchtungseinrichtung eines Kraftfahrzeugs
AT512083B1 (de) * 2011-11-02 2013-07-15 Zizala Lichtsysteme Gmbh Verfahren zur herstellung von reflektoren und lichteinheit mit reflektor
DE102012109491A1 (de) * 2012-10-05 2014-04-10 Hella Kgaa Hueck & Co. Beleuchtungseinheit für ein Kraftfahrzeug
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TWM464599U (zh) * 2013-05-24 2013-11-01 Sun Yujing Technology Ltd 可提升散熱效果的車用ｌｅｄ燈具

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Also Published As

Publication number Publication date
EP2947380A3 (de) 2015-12-23
EP2947380A2 (de) 2015-11-25
FR3021459A1 (fr) 2015-11-27
FR3021459B1 (fr) 2016-06-03

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