EP3243024B1 - Optisches modul für fahrzeugscheinwerfer - Google Patents

Optisches modul für fahrzeugscheinwerfer Download PDF

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Publication number
EP3243024B1
EP3243024B1 EP16700194.0A EP16700194A EP3243024B1 EP 3243024 B1 EP3243024 B1 EP 3243024B1 EP 16700194 A EP16700194 A EP 16700194A EP 3243024 B1 EP3243024 B1 EP 3243024B1
Authority
EP
European Patent Office
Prior art keywords
optical module
radiator
module according
fan
housing
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
EP16700194.0A
Other languages
English (en)
French (fr)
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EP3243024A1 (de
Inventor
Nicolas RUCKEBUSCH
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
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 EP3243024A1 publication Critical patent/EP3243024A1/de
Application granted granted Critical
Publication of EP3243024B1 publication Critical patent/EP3243024B1/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
    • 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
    • F21S45/42—Forced cooling
    • F21S45/43—Forced cooling using gas
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S45/49—Attachment of the cooling means
    • 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
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • 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 an optical module for a vehicle headlamp.
  • Such an optical module operates with a light source having the disadvantage of emitting heat. It is therefore equipped with a radiator for absorbing this heat, so as to maintain the temperature of said module at a relatively low level. In this way, the operation of the optical module is not affected by too high a temperature.
  • This type of module has already been patented.
  • This module includes a radiator able to blow air cooled to the light source.
  • An optical module according to the invention implements a fan / radiator assembly, which is easy and quick to assemble and disassemble, is compact and has a reduced cost.
  • the invention relates to an optical module comprising a radiator comprising one or more heat-dissipating surfaces, a fan capable of sending air to the heat-dissipating surface or surfaces, and a light source supported by said radiator.
  • the main characteristic of an optical module according to the invention is that the radiator is formed with folded sheet, the fan being fixed to said radiator by fastening means made in said folded sheet.
  • the fastening means are of small thickness, have a good mechanical strength and may have a certain ability to elastic deformation. All these structural and functional features are particularly suitable for fixing the fan on the radiator.
  • such a fixing configuration is freed from the implementation of additional parts, often expensive and bulky, and specifically designed for fixing the fan on said radiator. This results in a gain economic and space saving often sought in a motor vehicle.
  • a folded sheet has the advantage of being easily and quickly machined, to obtain fastening means of variable geometry and size, adapted to the characteristics of the fan and radiator considered.
  • Each heat-dissipating surface may, for example, be represented by a fin or a pin.
  • the folded sheet forms a casing surrounding the heat dissipating surface or surfaces.
  • the folded sheet forms a fin, or several fins interconnected and separated by the folds or the curvatures of said sheet, the fins or fins forming the heat dissipating surface or surfaces.
  • the fins and the housing form a single piece formed by said folded sheet
  • the fan is attached to the radiator by clipping.
  • the attachment of the fan to the radiator is easy and fast because it does not require specific tools or complicated handling requiring precision and rigor.
  • the fan can be removed at any time from the radiator as simply and quickly as when mounted on said radiator.
  • the heat-dissipating surfaces and the housing form two distinct parts.
  • the fixing means are made in the housing of the radiator.
  • the folded sheet forms a fin, or several fins connected to one another and separated by the folds or curvatures of said sheet, the fins forming the heat-dissipating surface or surfaces, the fixing means being made in the fins of the radiator.
  • the fixing means comprise at least two resiliently deformable fastening tabs.
  • the housing, the heat dissipating surfaces and the fixing means are made of aluminum.
  • the aluminum is 99% pure.
  • the fan comprises complementary fastening means adapted to cooperate with the radiator fastening means.
  • the light source comprises at least one electroluminescent diode.
  • a light-emitting diode is a powerful light source in terms of light intensity produced, while remaining of a small footprint.
  • the fan is attached to the radiator by means of a sliding of said fan along said radiator and a lock made with the radiator fastening means.
  • a light module according to the invention for which the fan is fixed laterally on the radiator.
  • the sliding is effected by means of an interaction between two grooves and two rails, said two grooves belonging to one of the two elements constituted by the radiator and the fan and said two rails belonging to the other element.
  • the grooves are introduced into the rails and slide along them until the fan has reached its final fixing position.
  • the rails are folded portions of said folded sheet.
  • the subject of the invention is a vehicle headlight comprising at least one optical module according to the invention.
  • a light module according to the invention is particularly suitable for use in a vehicle headlight, and more particularly in a motor vehicle headlight.
  • An optical module according to the invention has the advantage of being flexible in use and maintenance, because the fan can be attached to the radiator quickly and easily, and can be removed at any time easily . It also has the advantage of being efficient in terms of temperature regulation, insofar as the radiator is made of folded sheet metal, with pure aluminum having good thermal conduction.
  • an optical module 1 constitutes an elongated element, and comprises schematically two light-emitting diodes 2, 3, two reflecting surfaces 4, 5, an exit diopter 6 and a cooling device having a fan 7 and a radiator 8.
  • the two diodes 2, 3 are placed on a support piece 9 flat and thin, secured to the radiator 8. More specifically, this support part 9 comprises two flat surfaces 10, 11 and parallel, a diode 2, 3 being fixed on each of said surfaces 10, 11.
  • Each reflective diopter 4, 5 is curved and is located opposite a diode 2, 3 so as to reflect the light beams from said diode 2, 3 to the output diopter 6.
  • the device cooling is placed behind the diodes 2, 3 with respect to 6 diopter output. In other words, the diodes 2, 3 are placed between the output dioptre 6 and the assembly formed by the fan 7 and the radiator 8.
  • the cooling device, the diodes 2, 3 and the output diopter 6 are aligned in a longitudinal axis of the optical module 1.
  • the radiator 8 comprises a housing 12 and a network of fins 13 of aluminum.
  • the housing 12 is delimited by four side walls 14, 15, 16, 17 and a bottom 18, two successive walls forming between them an angle of 90 °.
  • the walls 14, 15, 16, 17 and the bottom 18 are planar, said bottom 18 being perpendicular to each of said walls 14, 15, 16, 17.
  • each of said lugs 19, 20 having three segments 21, 22, 23 and two elbows.
  • These two tabs 19, 20 emerge on the same side of the two walls 14, 15 on which they are implanted, said side being opposite to that at which the bottom 18 is located. In this way, each tab 19, 20 extends into a direction which is opposed to that where the bottom 18 is located.
  • the first segment 21 extends in the same plane the wall 14, from which it emerges, the second segment 22 extends said first segment 21, and has a tendency to extend towards the center of the housing 13.
  • the third segment 23 extends said second segment 22 by being slightly inclined relative to the first segment 21 and tends to extend outwardly of said housing 12, the two elbows being situated between said three segments 21, 22, 23.
  • the third segments 23 of the two tabs 19, 20 facing one another, define between them a space which is gradually reduced in approaching the bottom 18 of the housing 12.
  • Two positioning tabs 24, 25, 2 6, 27 frame each of the two clipping lugs 19, 20, each of said positioning tabs 24, 25, 26, 27 consisting of a flat wall of small thickness, extending in the same plane the side wall 14, 15 of the housing 12 from which it emerges, and projecting in the same direction as that of the clipping lug 19, 20.
  • the other two parallel side walls 16, 17 of the housing 12 also have legs 28, 29, 30 having different lengths along said walls 16, 17.
  • the various positioning tabs 24, 25, 26, 27, 28, 29, 30 are intended to delimit a space of the radiator 8 intended to receive the fan 7.
  • the fins 13 of the radiator 8 are all the same length and are arranged in said radiator 8 being parallel to each other. They are further aligned with each other, two successive fins 13 being connected to each other by means of a segment 31 bent at 180 °. In other words, each fin 13 is extended at its ends by bent segments 31 in opposite directions.
  • the fins 13 being machined into sheets, can be made with 99% pure aluminum thus enabling high performance thermal conduction, in particular to cool the optical module 1.
  • the fins 13 of the radiator 8 constitute a single piece, housed in the housing 12 of the radiator 8 remaining fully included in said housing 12, without emerging thereof.
  • the housing 12 is provided with perforated fastening elements 32, parallel to the bottom 18 of said housing 12, to allow attachment, for example by screwing it onto the flat support part 9 of the optical module 1.
  • the fin array 13 and the housing 12 constitute a single piece made of folded aluminum sheet.
  • the fan 7 is brought above the radiator 8, consisting of the housing 12 and the fins 13, said radiator 8 being fixed to the flat support part 9 of the optical module 1.
  • the fan 7 is then moved in translation from top to bottom, as indicates the arrow 34, to be fixed on said radiator 8.
  • the fan 7 then passes between the third segments 23 of the two lugs 19, 20 of clipping, causing a temporary spacing of said two legs 19, 20.
  • the stroke of the fan 7 to the radiator 8 continues, until the upper part of said fan 7 has crossed the second segments 22 of said tabs 19, 20.
  • the clipping lugs 19, 20 then close on the fan 7 while relaxing to find their rest position.
  • the fin array 13 and the housing 12 constitute two separate parts made of folded aluminum sheet.
  • the part materializing the network of fins 13 is then introduced into the housing 12 to form the radiator 8.
  • the fan 7 is then attached to the radiator 8 according to the same principle as that used for the first preferred embodiment described above. .
  • the fan 7 can be fixed, either by the top of the radiator 8 as is the case for the first two preferred embodiments described above. but laterally by means of sliding on said radiator 8.
  • This lateral sliding is implemented by means of an interaction between two parallel projecting grooves and two parallel rails, said grooves belonging to one of the two elements constituted by the fan 7 and the radiator 8, and said two rails belonging to the other element.
  • the grooves are introduced into the rails, and the fan 7 slides laterally on the radiator 8 by creating an extra thickness corresponds approximately to the total thickness of said fan.
  • the fan 7 is locked on said radiator 8 by clipping.

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)
  • Cooling Or The Like Of Semiconductors Or Solid State Devices (AREA)

Claims (16)

  1. Optisches Modul (1), umfassend einen Radiator (8), umfassend eine oder mehrere Wärmeabfuhrflächen (13), einen Ventilator (7), der geeignet ist, Luft auf die eine oder mehreren Wärmeabfuhrflächen (13) zu blasen, und eine Lichtquelle (2, 3), die von dem Radiator (8) getragen wird, wobei der Radiator (8) mit einem gefalteten Blech ausgebildet ist, dadurch gekennzeichnet, dass der Ventilator (7) an dem Radiator (8) durch Befestigungsmittel (19, 20) befestigt ist, die in dem gefalteten Blech gebildet sind.
  2. Optisches Modul nach Anspruch 1, dadurch gekennzeichnet, dass das gefaltete Blech ein Gehäuse (12) bildet, das die eine oder mehreren Wärmeabfuhrflächen (13) umgibt.
  3. Optisches Modul nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass das gefaltete Blech eine Rippe oder mehrere Rippen (13) bildet, die durch die Falten oder die Krümmungen des Blechs miteinander verbunden sind und dadurch getrennt sind, wobei die eine oder mehreren Rippen die eine oder mehreren Wärmeabfuhrflächen bilden.
  4. Optisches Modul nach den Ansprüchen 2 und 3, dadurch gekennzeichnet, dass die Rippen (13) und das Gehäuse (12) ein einziges Stück bilden, das durch das gefaltete Blech gebildet wird.
  5. Optisches Modul nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Ventilator (7) an dem Radiator (8) durch Klemmen befestigt ist.
  6. Optisches Modul nach Anspruch 2, dadurch gekennzeichnet, dass die Wärmeabfuhrflächen (13) und das Gehäuse (12) zwei verschiedene Stücke bilden.
  7. Optisches Modul nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Befestigungsmittel in dem Gehäuse (12) des Radiators (8) gebildet sind.
  8. Optisches Modul nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass das gefaltete Blech eine Rippe oder mehrere Rippen (13) bildet, die durch die Falten oder die Krümmungen des Blechs miteinander verbunden sind und dadurch getrennt sind, wobei die eine oder mehreren Rippen die eine oder mehreren Wärmeabfuhrflächen bilden, und dadurch, dass die Befestigungsmittel in den Rippen (13) des Radiators (8) gebildet sind.
  9. Optisches Modul nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Befestigungsmittel mindestens zwei elastisch verformbare Befestigungslaschen (19, 20) umfassen.
  10. Optisches Modul nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass das Gehäuse (12), die Wärmeabfuhrflächen (13) und die Befestigungsmittel (19, 20) aus Aluminium bestehen.
  11. Optisches Modul nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass der Ventilator (7) komplementäre Befestigungsmittel umfasst, die geeignet sind, mit den Befestigungsmitteln (19, 20) des Radiators (8) zusammenzuwirken.
  12. Optisches Modul nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Lichtquelle mindestens eine Elektrolumineszenzdiode (2, 3) umfasst.
  13. Optisches Modul nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass der Ventilator (7) an dem Radiator (8) durch ein Gleiten des Ventilators (7) entlang des Radiators (8), dann ein mit den Befestigungsmitteln des Radiators (8) durchgeführtes Verriegeln befestigt wird.
  14. Optisches Modul nach Anspruch 13, dadurch gekennzeichnet, dass das Gleiten mit Hilfe einer Interaktion zwischen zwei Rillen und zwei Schienen erfolgt, wobei die beiden Rillen zu einem der beiden Elemente gehören, die von dem Radiator (8) und dem Ventilator (7) gebildet werden, und die beiden Schienen zu dem anderen Element (7, 8) gehören.
  15. Optisches Modul nach Anspruch 14, dadurch gekennzeichnet, dass die Schienen rückgefaltete Abschnitte des gefalteten Blechs sind.
  16. Fahrzeugscheinwerfer, umfassend mindestens ein optisches Modul (1) nach einem der Ansprüche 1 bis 15.
EP16700194.0A 2015-01-09 2016-01-08 Optisches modul für fahrzeugscheinwerfer Active EP3243024B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1550173A FR3031572B1 (fr) 2015-01-09 2015-01-09 Module optique pour projecteur de vehicule
PCT/EP2016/050288 WO2016110573A1 (fr) 2015-01-09 2016-01-08 Module optique pour projecteur de vehicule

Publications (2)

Publication Number Publication Date
EP3243024A1 EP3243024A1 (de) 2017-11-15
EP3243024B1 true EP3243024B1 (de) 2018-12-05

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Application Number Title Priority Date Filing Date
EP16700194.0A Active EP3243024B1 (de) 2015-01-09 2016-01-08 Optisches modul für fahrzeugscheinwerfer

Country Status (7)

Country Link
US (1) US9958129B2 (de)
EP (1) EP3243024B1 (de)
JP (1) JP6797806B2 (de)
KR (1) KR102468165B1 (de)
CN (1) CN107208863A (de)
FR (1) FR3031572B1 (de)
WO (1) WO2016110573A1 (de)

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Publication number Priority date Publication date Assignee Title
FR3031571B1 (fr) * 2015-01-09 2018-08-10 Valeo Vision Module optique pour projecteur de vehicule
FR3037125B1 (fr) * 2015-06-08 2019-10-11 Valeo Vision Dissipateur thermique pour module d'emission lumineuse, module d'emission lumineuse et dispositif lumineux associes
FR3064049B1 (fr) 2017-03-16 2021-07-09 Valeo Vision Module optique comportant un radiateur equipe d'un event
DE102017114466A1 (de) 2017-06-29 2019-01-03 Automotive Lighting Reutlingen Gmbh Kühlkörper aus Aluminium zum Abführen von Wärme von Halbleiter-Lichtquellen und Kraftfahrzeugbeleuchtungseinrichtung mit einem solchen Kühlkörper
EP3428514B1 (de) * 2017-07-11 2022-01-05 Marelli Automotive Lighting Italy S.p.A. Beleuchtungsvorrichtung für mit gekühlten beleuchtungsmodulen ausgestattete fahrzeuge
CN108826218B (zh) * 2018-05-14 2021-04-27 安徽卡澜特车灯科技有限公司 一种双光透镜灯座
FR3100598B1 (fr) 2019-09-05 2025-03-07 Psa Automobiles Sa Dispositif anti-vibrations pour un ventilateur de projecteur de véhicule automobile
EP3875849A1 (de) * 2020-03-02 2021-09-08 ZKW Group GmbH Beleuchtungsvorrichtung für einen fahrzeugscheinwerfer
DE102021111933B4 (de) 2021-05-07 2026-08-20 HELLA GmbH & Co. KGaA Kühlvorrichtung für eine Beleuchtungseinrichtung eines Kraftfahrzeugs

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Also Published As

Publication number Publication date
FR3031572A1 (fr) 2016-07-15
US9958129B2 (en) 2018-05-01
KR102468165B1 (ko) 2022-11-16
US20170370551A1 (en) 2017-12-28
EP3243024A1 (de) 2017-11-15
WO2016110573A1 (fr) 2016-07-14
CN107208863A (zh) 2017-09-26
JP2018501627A (ja) 2018-01-18
FR3031572B1 (fr) 2018-08-10
JP6797806B2 (ja) 2020-12-09
KR20170103796A (ko) 2017-09-13

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