EP3153770A1 - Cooling air duct for motor vehicle headlight - Google Patents

Cooling air duct for motor vehicle headlight Download PDF

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Publication number
EP3153770A1
EP3153770A1 EP16190426.3A EP16190426A EP3153770A1 EP 3153770 A1 EP3153770 A1 EP 3153770A1 EP 16190426 A EP16190426 A EP 16190426A EP 3153770 A1 EP3153770 A1 EP 3153770A1
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EP
European Patent Office
Prior art keywords
walls
projector
duct
hollow portions
wall
Prior art date
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Granted
Application number
EP16190426.3A
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German (de)
French (fr)
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EP3153770B1 (en
Inventor
Lotfi REDJEM SAAD
François BERREZAI
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Valeo Vision SAS
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Valeo Vision SAS
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Publication date
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Publication of EP3153770A1 publication Critical patent/EP3153770A1/en
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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
    • 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
    • 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
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles

Definitions

  • the invention relates to the field of lighting and / or light signaling, in particular for a motor vehicle. More particularly, the invention relates to the cooling of light modules of a motor vehicle headlamp.
  • Light sources in projectors and light fixtures are subject to heating and often require cooling. This is particularly the case for semiconductor light sources, such as electroluminescent diodes or laser diodes. These light sources are indeed very small for a significant lighting power. They are usually arranged on a board of the printed circuit type and are often thermally coupled to one or more radiators.
  • the published patent document DE 10 2007 043 961 A1 discloses a projector comprising a plurality of light modules whose light sources of the semiconductor type are coupled to radiators. These are cooled by a forced air flow through a conduit.
  • the latter comprises a cooling air inlet moved by a fan, several outlets opening near the coolers and a passage connecting the inlet to the outlets.
  • the passage includes branches dividing the flow of air from the inlet into several flow rates to the different outlets.
  • the construction of the duct is conventional in that it is the ramifications of the duct which realize the distribution of the inlet air flow.
  • the number of possible outlets is however limited by the ramifications and, moreover, the distribution of the specific flows of the different outlets lacks to be controlled. Indeed, an unidentified pressure drop downstream in one of the branches can have a significant adverse influence on the flow distribution.
  • the realization of ramifications is not without some problems of size and cost of implementation.
  • the patent document FR 2 946 730 A1 discloses, similarly to the preceding document, a motor vehicle headlamp, comprising a plurality of modules whose light sources are cooled by a flow of cooling air flowing through a duct arranged between a fan and respective radiators of the light sources. Similar to the path of teaching previous, the conduit is brought to present a cumbersome and complex form from a cost of production point of view. The distribution of flows has the same disadvantages as in the previous teaching.
  • the patent document US 2011/0051453 A1 discloses a projector for a motor vehicle, comprising a plurality of light modules whose light sources are in thermal contact with a common radiator.
  • a fan is arranged in the low position and away from the radiator to allow the pivoting of the light sources and the radiator in connection with a directional lighting function. This solution is interesting for its simplicity but presents constraints as regards the location of the modules and more particularly the light sources.
  • the invention aims to propose a solution to the cooling problem of light modules of a projector or light device. More particularly, the invention aims to allow efficient distribution of a cooling air flow produced by one or more radiators.
  • the subject of the invention is a headlamp, in particular for a motor vehicle, comprising: a plurality of light modules; an air duct for cooling the light modules, with at least one inlet of an air flow of one or more fans, several air outlets to the light modules, and a passage connecting the inlet (s) with the exits ; remarkable in that the conduit comprises at least one reported partition wall of the passage.
  • the passage advantageously forms several fluid veins, such as for example at least four fluid veins.
  • Each fluid stream is advantageously associated with one or more outlets.
  • the duct is advantageously made of plastic material, in particular thermoplastic.
  • the or at least one of the attached walls is adjacent to the inlet or at least one of the entries.
  • the duct extends generally in a plane, the or at least one of the added walls being parallel to said plane or forming an angle of less than 15 °, preferably less than 10 °, with said plan.
  • the or at least one of the reported walls is configured to divide the air flow, preferably at the inlet of said duct, into at least two separate veins towards the different outlets.
  • the reported wall or walls cooperate with one or more partition walls fixed so as to divide the flow of air, preferably at the inlet of said duct, into at least four separate veins towards the different exits.
  • the fixed partition or walls are transverse, preferably perpendicular, to the reported walls.
  • the conduit comprises at least two hollow portions assembled to one another, the or at least one of the added walls being disposed between said hollow portions.
  • the reported walls are thus sandwiched between the at least two hollow parts.
  • the at least two hollow portions delimit in a complementary manner the passage between the at least one inlet and the outlet, along one or more transverse sections of said passage.
  • the at least two hollow portions form at least one hinge connecting them and allowing them to be brought together in order to assemble them, said hinge preferably being integral with said hollow portions.
  • the at least two hollow portions are assembled in a generally plane mutual contact, the or at least one of the attached walls extending parallel to said plane or forming with said plane an angle of less than 15 ° preferably less than 10 °.
  • the at least two hollow portions delimit the entry or at least one of the entries, in a cross section of the at least one entry.
  • each of the outlets is integrally formed on one of the at least two hollow portions.
  • At least one, preferably each, of the outlets form a channel extending transversely to the duct.
  • the channel formed by the outlet (s) has a section with a convergent profile.
  • each of the at least two hollow portions comprises a bottom wall, the or each of the fixed partition walls extending on one of said bottom walls.
  • each of the at least two hollow portions comprises side walls, the or each of the fixed partition walls being in contact with at least one of the side walls.
  • the fixed partition walls comprise at least one partition wall transverse to the duct, with an edge adjacent to an edge of the one or more of the attached walls, the said partition wall or walls being preferentially usually straight.
  • the fixed partition walls comprise at least one guiding wall extending along the duct, the said guiding wall or walls being preferentially curved.
  • the partition wall or walls are on one of the at least two hollow portions of the conduit and the or at least one of the guide walls is on another of said at least two hollow portions.
  • the measures of the invention are interesting in that they make it possible to produce a duct forming several veins towards different outlets, which is efficient and economical.
  • the duct is efficient in that providing at least one partition wall which is reported allows to optimally separate the fluid veins.
  • the conduit is economical to achieve in that all its fixed walls can extend in the same direction, which is favorable to demolding operations. The reported walls may thus cooperate with the walls fixed to delimit in a precise and controlled manner the different fluid veins towards the different outlets.
  • the Figures 1 to 3 illustrate a projector according to a first embodiment of the invention.
  • the figure 1 illustrates the projector 2 from a viewpoint located at the front.
  • the projector 2 is illustrated without closure glass. It comprises a housing 4 housing light modules 6, in this case four lighting modules.
  • the housing 4 also houses a cooling system of the modules 6, specifically the light sources of the modules in question, comprising a duct 8 of cooling air and two fans 10 and 12 aeraulic connected with the duct 8.
  • the latter comprises air outlets arranged near radiators of the light modules 6.
  • the figure 2 is a rear view of the light modules 6 and their cooling system. There can be observed the two fans 10 and 12 disposed in front of corresponding inputs of the duct 8. It can also be observed that the modules 6 each comprise a radiator 14 disposed at the rear. The light source or sources of each of the modules 6 are thermally connected to the radiator of the module, so that the cooling air flow rate of the led 8, along the radiators ensures cooling of the light source or sources in question.
  • the light sources are advantageously of the semiconductor type, such as for example electroluminescence diodes or laser type.
  • the figure 3 is a plan view of the conduit 8, the latter consisting of two hollow portions 8 1 and 8 2 which are shown in the open state. More precisely, these two parts 8 1 and 8 2 are interconnected by a hinge 8 3 .
  • the hollow parts and the hinge are advantageously made of a single piece of plastic material.
  • Each of the two hollow portions 8 1 and 8 2 comprises two inputs 16 1/16 2 and 18 1/18 2. It is understood that the inlets 16 1 and 16 2 , and the inlets 18 1 and 18 2 , cooperate with each other when the two hollow portions 8 1 and 8 2 are assembled to one another, for forming the inlets 16 and 18 of the duct cooperating with the fans 10 and 12 ( figure 2 ), respectively.
  • the hollow part 8 2 comprises the four outlets 20 1 , 20 2 , 20 3 and 20 4 intended to be arranged close to the radiators 14 of the modules 6 ( figure 2 ).
  • the duct 8 thus forms a passage connecting the inlets 16 and 18 to the outlets 20 1 , 20 2 , 20 3 and 20 4 . More specifically, the passage is divided into four veins 22 1 , 22 2 , 22 3 and 22 4 specific to the four outlets 20 1 , 20 2 , 20 3 and 4 respectively.
  • the vein 22 1 connects the input 16 (16 1 + 16 2 ) to the output 20 1 .
  • the vein 22 2 connects the inlet 18 (18 1 +18 2 ) to the outlet 2 .
  • the vein 22 3 connects the inlet 18 to the outlet 20 3 and the vein 22 4 connects the inlet 16 to the outlet 20 4 .
  • Each of the inputs 16 and 18 is thus connected to two veins 22 1 and 22 4 , and 22 2 and 22 3 , respectively.
  • the duct 8 comprises a partition wall 24 (shaded area) disposed near the inlets 16 and 18 and essentially in the contact plane of the two hollow portions 8 1 and 8 2 .
  • This partition wall is reported in that it is disposed between the two hollow portions 8 1 and 8 2 , this wall being distinct from said hollow portions.
  • the reported separation wall 24 thus makes it possible to divide each of the two forced air flows in the inlets 16 and 18 by the fans in two fluid veins, in this case the fluid veins 22 1 and 22 4 for the inlet 16 and the fluid veins 22 2 and 22 3 for the inlet 18.
  • the fluid veins are delimited by the fixed partition walls 26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 and 28 5 of the two hollow portions 8 1 and 8 2 .
  • These fixed separation walls extend generally perpendicularly to the mean contact plane of the two hollow parts and, consequently, of the added wall 24.
  • the added wall 24 cooperates with the two walls 26 1 and 26 2 in order to delimit, in the hollow part 8 2 , the veins 22 1 and 22 2 .
  • Both walls 26 1 and 26 2 have their free edges adjacent to two opposite edges of the insert wall 24, respectively. Of the two other edges of the attached wall 24, one is adjacent to a side wall of the hollow portion 8 2, along the hinge 8 3, and the other is located in the registers 16 and 18 and forms a separation edge of the flows of these inputs.
  • the hollow portions 8 1 and 8 2 each comprise a bottom wall and side walls, said walls forming a U-shaped profile.
  • the fixed partition walls extend on the bottom walls and are contiguous with the corresponding side walls. .
  • the fixed partition walls there are the walls 28 1 and 28 2 on the hollow portion 8 2 , of generally curved shape and providing appropriate guidance of the fluid veins 22 1 and 22 2 to the outlets 20 1 and 20 2 .
  • the wall 28 3 always on the hollow portion 8 2 , of generally curved shape and providing appropriate guidance of the fluid stream 22 3 to the outlet 20 3 .
  • the fluid stream 22 3 extends, downstream of the added wall 24, over the entire thickness of the duct 8, that is to say in the two hollow portions 8 1 and 8 2 .
  • the fixed wall 28 4 on the hollow portion 8 1 cooperates with the fixed wall 28 3 .
  • the fixed wall 28 4 also cooperates with the added wall 24 in that it comes into contact with the latter.
  • the fixed wall 28 5 on the hollow portion 8 1 , also cooperates with the added wall 24. Similar to the fluid stream 22 3 , the fluid stream 22 4 extends over the entire thickness of the duct downstream of the wall reported 24.
  • each of the inlets 16 and 18 has a portion of the separation edge of the attached wall 24, these edge portions ensuring the separation in two of each of the flow rates at said inputs.
  • each of the flow rates produced by the fans 10 and 12 ( figures 1 and 2 ) is separated into two fluid streams near the inlet, which ensures a controlled distribution of flows to the different outlets.
  • the implementation of the reported wall 24 is particularly simple.
  • the realization of the hollow portions 8 1 and 8 2 is also advantageous in that they can be made in one piece by plastic injection into a mold.
  • the walls delimiting the duct and the fixed separation walls essentially all extend in the same direction, which is favorable to demolding operations.
  • the added wall 24 may be glued or more simply deposited in a housing on the hollow portion 8 2 .
  • the two hollow portions 8 1 and 8 2 can be assembled to one another by clipping, gluing and / or screwing.
  • FIG. 4 to 6 illustrate a cooling air duct according to a second embodiment, it being understood that this duct can be used in a projector as illustrated in FIG. figure 1 .
  • the reference numbers of the first embodiment are used to designate the same elements or corresponding elements, these numbers being however increased by 100 for purposes of distinguishing between the two embodiments. Reference is also made to the description of these elements in relation to the first embodiment. Specific numbers are used for the specific elements of this embodiment.
  • the conduit 108 is formed, similarly to the first mode, essentially of two hollow portions 108 1 and 108 2 connected together by a hinge 108 3.
  • the conduit 108 has a single inlet 116 (116 1 + 116 2 ) for a single fan 110.
  • Each of the hollow portions 108 1 and 108 2 comprises a fixed partition wall 126 3 and 126 4 , respectively, extending in the axis of the inlet. These two walls 126 3 and 126 4 are advantageously aligned, it being understood that they can also be shifted.
  • the added partition wall 124 extends transversely to the walls 126 1 , 126 2 , 126 3 and 126 4 .
  • the walls 126 1 , 126 2 and 126 4 delimit, with the added wall 124, the veins 122 1 and 122 2 in the hollow portion 108 2 .
  • the walls 126 3 , 128 4 and 128 5 delimit, with the added wall 124, the veins 122 3 and 122 4 in the hollow part 108 1 , at the height of the added wall 124, and in the hollow portions 108 1 and 108 2 , downstream of said wall 124.
  • the outputs of the conduit can form channels extending transversely to the general extent of the conduit. These channels may have a convergent section for accelerating the flow of cooling air.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Projection Apparatus (AREA)

Abstract

L'invention a trait à un projecteur notamment pour véhicule automobile, comprenant plusieurs modules lumineux (6) et un conduit (8 ; 108) d'air de refroidissement des modules lumineux (6), avec au moins une entrée d'air (116 1 , 116 2 ) pour un ou plusieurs ventilateurs (10, 12 ; 110), plusieurs sorties d'air (120 1 , 120 2 , 120 3 , 120 4 ) vers les modules lumineux (6), et un passage (122 1 , 122 2 , 122 3 , 122 4 ) reliant la ou les entrées (116 1 , 116 2 ) avec les sorties (120 1 , 120 2 , 120 3 , 120 4 ). Le conduit (8 ; 108) comprend au moins une paroi rapportée (124) de séparation du passage.The invention relates to a headlamp, in particular for a motor vehicle, comprising a plurality of light modules (6) and a cooling air duct (8; 108) for the light modules (6), with at least one air inlet (116). 1, 116 2) for one or more fans (10, 12; 110), a plurality of air outlets (120 1, 120 2, 120 3, 120 4) to the light modules (6), and a passage (122 1 , 122 2, 122 3, 122 4) connecting the at least one input (116 1, 116 2) with the outputs (120 1, 120 2, 120 3, 120 4). The duct (8; 108) comprises at least one insert wall (124) for separating the passage.

Description

L'invention a trait au domaine de l'éclairage et/ou de la signalisation lumineuse, notamment pour véhicule automobile. Plus particulièrement, l'invention a trait au refroidissement de modules lumineux d'un projecteur de véhicule automobile.The invention relates to the field of lighting and / or light signaling, in particular for a motor vehicle. More particularly, the invention relates to the cooling of light modules of a motor vehicle headlamp.

Les sources lumineuses présentes dans les projecteurs et dispositifs lumineux sont sujettes à échauffement et requièrent souvent d'être refroidies. C'est particulièrement le cas pour les sources lumineuses à semi-conducteurs, comme les diodes à électroluminescence ou encore les diodes laser. Ces sources lumineuses sont en effet de très petite taille pour une puissance d'éclairage importante. Elles sont habituellement disposées sur une platine du type circuit imprimé et sont souvent couplées thermiquement à un ou plusieurs radiateurs.Light sources in projectors and light fixtures are subject to heating and often require cooling. This is particularly the case for semiconductor light sources, such as electroluminescent diodes or laser diodes. These light sources are indeed very small for a significant lighting power. They are usually arranged on a board of the printed circuit type and are often thermally coupled to one or more radiators.

Le document de brevet publié DE 10 2007 043 961 A1 divulgue un projecteur comprenant plusieurs modules lumineux dont les sources lumineuses du type semi-conducteurs sont couplées à des radiateurs. Ces derniers sont refroidis par un courant d'air forcé au travers d'un conduit. Ce dernier comprend une entrée d'air de refroidissement mis en mouvement par un ventilateur, plusieurs sorties débouchant à proximité des refroidisseurs et un passage reliant l'entrée aux sorties. Le passage comprend des ramifications divisant le débit d'air de l'entrée en plusieurs débits vers les différentes sorties. La construction du conduit est classique en ce que ce sont les ramifications du conduit qui réalisent la répartition du débit d'air d'entrée. Le nombre de sorties possibles est cependant limité par les ramifications et, par ailleurs, la répartition des débits spécifiques des différentes sorties manque d'être maitrisée. En effet, une perte de charge non identifiée en aval dans une des ramifications peut avoir une influence néfaste importante sur la répartition des débits. De plus, la réalisation des ramifications n'est pas sans poser certains problèmes d'encombrement et de coût de réalisation.The published patent document DE 10 2007 043 961 A1 discloses a projector comprising a plurality of light modules whose light sources of the semiconductor type are coupled to radiators. These are cooled by a forced air flow through a conduit. The latter comprises a cooling air inlet moved by a fan, several outlets opening near the coolers and a passage connecting the inlet to the outlets. The passage includes branches dividing the flow of air from the inlet into several flow rates to the different outlets. The construction of the duct is conventional in that it is the ramifications of the duct which realize the distribution of the inlet air flow. The number of possible outlets is however limited by the ramifications and, moreover, the distribution of the specific flows of the different outlets lacks to be controlled. Indeed, an unidentified pressure drop downstream in one of the branches can have a significant adverse influence on the flow distribution. In addition, the realization of ramifications is not without some problems of size and cost of implementation.

Le document de brevet FR 2 946 730 A1 divulgue, similairement au document précédent, un projecteur pour véhicule automobile, comprenant plusieurs modules dont les sources lumineuses sont refroidies par un débit d'air de refroidissement circulant au travers d'un conduit disposé entre un ventilateur et des radiateurs respectifs des sources lumineuses. Similairement au conduit de l'enseignement précédent, le conduit est amené à présenter une forme encombrante et complexe d'un point de vue coût de production. La répartition des débits y présente les mêmes inconvénients que dans l'enseignement précédent.The patent document FR 2 946 730 A1 discloses, similarly to the preceding document, a motor vehicle headlamp, comprising a plurality of modules whose light sources are cooled by a flow of cooling air flowing through a duct arranged between a fan and respective radiators of the light sources. Similar to the path of teaching previous, the conduit is brought to present a cumbersome and complex form from a cost of production point of view. The distribution of flows has the same disadvantages as in the previous teaching.

Le document de brevet US 2011/0051453 A1 divulgue un projecteur pour véhicule automobile, comprenant plusieurs modules lumineux dont les sources lumineuses sont en contact thermique avec un radiateur commun. Un ventilateur est disposé en position basse et à distance du radiateur afin de permettre le pivotement des sources lumineuses et du radiateur en relation avec une fonction d'éclairage directionnel. Cette solution est intéressante par sa simplicité mais présente des contraintes en ce qui concerne l'emplacement des modules et plus particulièrement des sources lumineuses.The patent document US 2011/0051453 A1 discloses a projector for a motor vehicle, comprising a plurality of light modules whose light sources are in thermal contact with a common radiator. A fan is arranged in the low position and away from the radiator to allow the pivoting of the light sources and the radiator in connection with a directional lighting function. This solution is interesting for its simplicity but presents constraints as regards the location of the modules and more particularly the light sources.

L'invention a pour objectif de proposer une solution au problème de refroidissement de modules lumineux d'un projecteur ou dispositif lumineux. Plus particulièrement, l'invention a pour objectif de permettre une distribution efficace d'un débit d'air de refroidissement produit par un ou plusieurs radiateurs.The invention aims to propose a solution to the cooling problem of light modules of a projector or light device. More particularly, the invention aims to allow efficient distribution of a cooling air flow produced by one or more radiators.

L'invention a pour objet un projecteur notamment pour véhicule automobile, comprenant : plusieurs modules lumineux ; un conduit d'air de refroidissement des modules lumineux, avec au moins une entrée d'un flux d'air d'un ou plusieurs ventilateurs, plusieurs sorties d'air vers les modules lumineux, et un passage reliant la ou les entrées avec les sorties ; remarquable en ce que le conduit comprend au moins une paroi rapportée de séparation du passage.The subject of the invention is a headlamp, in particular for a motor vehicle, comprising: a plurality of light modules; an air duct for cooling the light modules, with at least one inlet of an air flow of one or more fans, several air outlets to the light modules, and a passage connecting the inlet (s) with the exits ; remarkable in that the conduit comprises at least one reported partition wall of the passage.

Par paroi rapportée, on entend une paroi distincte du corps du conduit, la paroi étant alors fixée audit corps. Le corps forme avantageusement les parois extérieures du conduit.By reported wall is meant a separate wall of the conduit body, the wall then being fixed to said body. The body advantageously forms the outer walls of the conduit.

Le passage forme avantageusement plusieurs veines fluides, comme par exemple au moins quatre veines fluides. Chaque veine fluide est avantageusement associée à une ou plusieurs sorties.The passage advantageously forms several fluid veins, such as for example at least four fluid veins. Each fluid stream is advantageously associated with one or more outlets.

Le conduit est avantageusement en matériau plastique, notamment thermoplastique.The duct is advantageously made of plastic material, in particular thermoplastic.

Selon un mode avantageux de l'invention, la ou au moins une des parois rapportées est adjacente à l'entrée ou au moins une des entrées.According to an advantageous embodiment of the invention, the or at least one of the attached walls is adjacent to the inlet or at least one of the entries.

Selon un mode avantageux de l'invention, le conduit s'étend généralement dans un plan, la ou au moins une des parois rapportées étant parallèle audit plan ou formant un angle de moins de 15°, préférentiellement de moins de 10°, avec ledit plan.According to an advantageous embodiment of the invention, the duct extends generally in a plane, the or at least one of the added walls being parallel to said plane or forming an angle of less than 15 °, preferably less than 10 °, with said plan.

Selon un mode avantageux de l'invention, la ou au moins une des parois rapportées est configurée pour diviser le flux d'air, préférentiellement à l'entrée dudit conduit, en au moins deux veines séparées vers les différentes sorties.According to an advantageous embodiment of the invention, the or at least one of the reported walls is configured to divide the air flow, preferably at the inlet of said duct, into at least two separate veins towards the different outlets.

Selon un mode avantageux de l'invention, la ou les parois rapportées coopèrent avec une ou plusieurs parois de séparation fixes de manière à diviser le flux d'air, préférentiellement à l'entrée dudit conduit, en au moins quatre veines séparées vers les différentes sorties.According to an advantageous embodiment of the invention, the reported wall or walls cooperate with one or more partition walls fixed so as to divide the flow of air, preferably at the inlet of said duct, into at least four separate veins towards the different exits.

Selon un mode avantageux de l'invention, la ou les parois de séparation fixes sont transversales, préférentiellement perpendiculaires, à la ou aux parois rapportées.According to an advantageous embodiment of the invention, the fixed partition or walls are transverse, preferably perpendicular, to the reported walls.

Selon un mode avantageux de l'invention, le conduit comprend au moins deux parties creuses assemblées l'une à l'autre, la ou au moins une des parois rapportées étant disposée entre lesdites parties creuses. La ou les parois rapportées sont ainsi prises en sandwich entre les au moins deux parties creuses.According to an advantageous embodiment of the invention, the conduit comprises at least two hollow portions assembled to one another, the or at least one of the added walls being disposed between said hollow portions. The reported walls are thus sandwiched between the at least two hollow parts.

Selon un mode avantageux de l'invention, les au moins deux parties creuses délimitent de manière complémentaire le passage entre la ou les entrées et les sorties, suivant une ou plusieurs sections transversales dudit passage.According to an advantageous embodiment of the invention, the at least two hollow portions delimit in a complementary manner the passage between the at least one inlet and the outlet, along one or more transverse sections of said passage.

Selon un mode avantageux de l'invention, les au moins deux parties creuses forment au moins une charnière les reliant et permettant de les rapprocher en vue de les assembler, ladite charnière étant préférentiellement venue de matière avec lesdites parties creuses.According to an advantageous embodiment of the invention, the at least two hollow portions form at least one hinge connecting them and allowing them to be brought together in order to assemble them, said hinge preferably being integral with said hollow portions.

Selon un mode avantageux de l'invention, les au moins deux parties creuses sont assemblées suivant un contact mutuel généralement plan, la ou au moins une des parois rapportées s'étendant parallèlement audit plan ou formant avec ledit plan un angle de moins de 15°, préférentiellement de moins de 10°.According to an advantageous embodiment of the invention, the at least two hollow portions are assembled in a generally plane mutual contact, the or at least one of the attached walls extending parallel to said plane or forming with said plane an angle of less than 15 ° preferably less than 10 °.

Selon un mode avantageux de l'invention, les au moins deux parties creuses délimitent l'entrée ou au moins une des entrées, suivant une section transversale de ladite ou desdites entrées.According to an advantageous embodiment of the invention, the at least two hollow portions delimit the entry or at least one of the entries, in a cross section of the at least one entry.

Selon un mode avantageux de l'invention, chacune des sorties est intégralement formée sur une des au moins deux parties creuses.According to an advantageous embodiment of the invention, each of the outlets is integrally formed on one of the at least two hollow portions.

Selon un mode avantageux de l'invention, au moins une, préférentiellement chacune, des sorties forme un canal s'étendant transversalement au conduit.According to an advantageous embodiment of the invention, at least one, preferably each, of the outlets form a channel extending transversely to the duct.

Selon un mode avantageux de l'invention, le canal formé par la ou les sorties présente une section avec un profil convergent.According to an advantageous embodiment of the invention, the channel formed by the outlet (s) has a section with a convergent profile.

Selon un mode avantageux de l'invention, chacune des au moins deux parties creuses comprend une paroi de fond, la ou chacune des parois de séparation fixes s'étendant sur une desdites parois de fond.According to an advantageous embodiment of the invention, each of the at least two hollow portions comprises a bottom wall, the or each of the fixed partition walls extending on one of said bottom walls.

Selon un mode avantageux de l'invention, chacune des au moins deux parties creuses comprend des parois latérales, la ou chacune des parois de séparation fixes étant en contact avec au moins une des parois latérales.According to an advantageous embodiment of the invention, each of the at least two hollow portions comprises side walls, the or each of the fixed partition walls being in contact with at least one of the side walls.

Selon un mode avantageux de l'invention, les parois de séparation fixes comprennent au moins une paroi de cloisonnement transversale au conduit, avec un bord adjacent à un bord de la ou d'une des parois rapportées, ladite ou lesdites parois de cloisonnement étant préférentiellement généralement droites.According to an advantageous embodiment of the invention, the fixed partition walls comprise at least one partition wall transverse to the duct, with an edge adjacent to an edge of the one or more of the attached walls, the said partition wall or walls being preferentially usually straight.

Selon un mode avantageux de l'invention, les parois de séparation fixes comprennent au moins une paroi de guidage s'étendant suivant le conduit, ladite ou lesdites parois de guidage étant préférentiellement courbes.According to an advantageous embodiment of the invention, the fixed partition walls comprise at least one guiding wall extending along the duct, the said guiding wall or walls being preferentially curved.

Selon un mode avantageux de l'invention, la ou les parois de cloisonnement sont sur une des au moins deux parties creuses du conduit et la ou au moins une des parois de guidage est sur une autre desdites au moins deux parties creuses.According to an advantageous embodiment of the invention, the partition wall or walls are on one of the at least two hollow portions of the conduit and the or at least one of the guide walls is on another of said at least two hollow portions.

Les mesures de l'invention sont intéressantes en ce qu'elles permettent de réaliser un conduit formant plusieurs veines vers différentes sorties, qui est performant et économique. Le conduit est performant en ce que le fait de prévoir au moins une paroi de séparation qui est rapportée permet de séparer de manière optimale les veines fluides. Le conduit est économique à réaliser en ce que toutes ses parois fixes peuvent s'étendre dans la même direction, ce qui est favorable aux opérations de démoulage. La ou les parois rapportées peuvent ainsi coopérer avec les parois fixes pour délimiter de manière précise et contrôlée les différentes veines fluides vers les différentes sorties.The measures of the invention are interesting in that they make it possible to produce a duct forming several veins towards different outlets, which is efficient and economical. The duct is efficient in that providing at least one partition wall which is reported allows to optimally separate the fluid veins. The conduit is economical to achieve in that all its fixed walls can extend in the same direction, which is favorable to demolding operations. The reported walls may thus cooperate with the walls fixed to delimit in a precise and controlled manner the different fluid veins towards the different outlets.

D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :

  • La figure 1 est une vue avant d'un projecteur selon un premier mode de réalisation de l'invention ;
  • La figure 2 est une vue arrière des modules et du conduit de refroidissement desdits modules du projecteur de la figure 1 ;
  • La figure 3 est une vue en plan du conduit des figures 1 et 2, le conduit étant en position ouverte ;
  • La figure 4 est une vue en perspective d'un conduit selon un deuxième mode de réalisation, le conduit étant en position ouverte ;
  • La figure 5 est une vue en plan du conduit de la figure 4 ;
  • La figure 6 est une vue en perspective du conduit des figures 4 et 5, à l'état assemblé.
Other features and advantages of the present invention will be better understood from the description and the drawings, among which:
  • The figure 1 is a front view of a projector according to a first embodiment of the invention;
  • The figure 2 is a rear view of the modules and the cooling duct of said projector modules of the figure 1 ;
  • The figure 3 is a plan view of the duct figures 1 and 2 , the duct being in the open position;
  • The figure 4 is a perspective view of a duct according to a second embodiment, the duct being in the open position;
  • The figure 5 is a plan view of the duct of the figure 4 ;
  • The figure 6 is a perspective view of the duct figures 4 and 5 , in the assembled state.

Les figures 1 à 3 illustrent un projecteur conforme à un premier mode de réalisation de l'invention.The Figures 1 to 3 illustrate a projector according to a first embodiment of the invention.

La figure 1 illustre le projecteur 2 depuis un point de vue situé à l'avant. Le projecteur 2 est illustré sans glace de fermeture. Il comprend un boîtier 4 logeant des modules lumineux 6, en l'occurrence quatre modules d'éclairage. Le boîtier 4 loge également un système de refroidissement des modules 6, plus précisément des sources lumineuses des modules en question, comprenant un conduit 8 d'air de refroidissement et deux ventilateurs 10 et 12 reliés de manière aéraulique avec le conduit 8. Ce dernier comprend des sorties d'air disposées à proximité de radiateurs des modules lumineux 6.The figure 1 illustrates the projector 2 from a viewpoint located at the front. The projector 2 is illustrated without closure glass. It comprises a housing 4 housing light modules 6, in this case four lighting modules. The housing 4 also houses a cooling system of the modules 6, specifically the light sources of the modules in question, comprising a duct 8 of cooling air and two fans 10 and 12 aeraulic connected with the duct 8. The latter comprises air outlets arranged near radiators of the light modules 6.

La figure 2 est une vue arrière des modules lumineux 6 et de leur système de refroidissement. On peut y observer les deux ventilateurs 10 et 12 disposés devant des entrées correspondantes du conduit 8. On peut également observer que les modules 6 comprennent, chacun, un radiateur 14 disposé à l'arrière. La ou les sources lumineuses de chacun des modules 6 sont reliées thermiquement au radiateur du module, de manière à ce que le débit d'air de refroidissement du conduit 8, le long des radiateurs assure un refroidissement de la ou des sources lumineuses en question.The figure 2 is a rear view of the light modules 6 and their cooling system. There can be observed the two fans 10 and 12 disposed in front of corresponding inputs of the duct 8. It can also be observed that the modules 6 each comprise a radiator 14 disposed at the rear. The light source or sources of each of the modules 6 are thermally connected to the radiator of the module, so that the cooling air flow rate of the led 8, along the radiators ensures cooling of the light source or sources in question.

Les sources lumineuses sont avantageusement du type semi-conducteur, comme par exemple des diodes à électroluminescence ou encore du type laser.The light sources are advantageously of the semiconductor type, such as for example electroluminescence diodes or laser type.

La figure 3 est une vue en plan du conduit 8, ce dernier étant constitué de deux parties creuses 81 et 82 qui sont représentées à l'état ouvert. Plus précisément, ces deux parties 81 et 82 sont reliées entre elles par une charnière 83. Les parties creuses et la charnière sont avantageusement réalisées d'un seul tenant en matériau plastique.The figure 3 is a plan view of the conduit 8, the latter consisting of two hollow portions 8 1 and 8 2 which are shown in the open state. More precisely, these two parts 8 1 and 8 2 are interconnected by a hinge 8 3 . The hollow parts and the hinge are advantageously made of a single piece of plastic material.

Chacune des deux parties creuses 81 et 82 comprend deux entrées 161/162 et 181/182. Il est entendu que les entrées 161 et 162, et les entrées 181 et 182, coopèrent l'une avec l'autre lorsque les deux parties creuses 81 et 82 sont assemblées l'une à l'autre, pour former les entrées 16 et 18 du conduit coopérant avec les ventilateurs 10 et 12 (figure 2), respectivement.Each of the two hollow portions 8 1 and 8 2 comprises two inputs 16 1/16 2 and 18 1/18 2. It is understood that the inlets 16 1 and 16 2 , and the inlets 18 1 and 18 2 , cooperate with each other when the two hollow portions 8 1 and 8 2 are assembled to one another, for forming the inlets 16 and 18 of the duct cooperating with the fans 10 and 12 ( figure 2 ), respectively.

La partie creuse 82 comprend les quatre sorties 201, 202, 203 et 204 destinées à être disposées à proximité des radiateurs 14 des modules 6 (figure 2). Le conduit 8 forme ainsi un passage reliant les entrées 16 et 18 aux sorties 201, 202, 203 et 204. Plus précisément, le passage est divisé en quatre veines 221, 222, 223 et 224 spécifiques aux quatre sorties 201, 202, 203 et 204, respectivement. La veine 221 relie en effet l'entrée 16 (161+162) à la sortie 201. Similairement, la veine 222 relie l'entrée 18 (181+182) à la sortie 202. La veine 223 relie l'entrée 18 à la sortie 203 et la veine 224 relie l'entrée 16 à la sortie 204. Chacune des entrées 16 et 18 est ainsi reliée à deux veines 221 et 224, et 222 et 223, respectivement. Pour ce faire, le conduit 8 comprend une paroi de séparation 24 (zone hachurée) disposée à proximité des entrées 16 et 18 et essentiellement dans le plan de contact des deux parties creuses 81 et 82. Cette paroi de séparation est rapportée en ce qu'elle est disposée entre les deux parties creuses 81 et 82, cette paroi étant distincte desdites parties creuses. La paroi de séparation rapportée 24 permet ainsi de diviser chacun des deux flux d'air forcés dans les entrées 16 et 18 par les ventilateurs en deux veines fluides, en l'occurrence les veines fluides 221 et 224 pour l'entrée 16 et les veines fluides 222 et 223 pour l'entrée 18.The hollow part 8 2 comprises the four outlets 20 1 , 20 2 , 20 3 and 20 4 intended to be arranged close to the radiators 14 of the modules 6 ( figure 2 ). The duct 8 thus forms a passage connecting the inlets 16 and 18 to the outlets 20 1 , 20 2 , 20 3 and 20 4 . More specifically, the passage is divided into four veins 22 1 , 22 2 , 22 3 and 22 4 specific to the four outlets 20 1 , 20 2 , 20 3 and 4 respectively. The vein 22 1 connects the input 16 (16 1 + 16 2 ) to the output 20 1 . Similarly, the vein 22 2 connects the inlet 18 (18 1 +18 2 ) to the outlet 2 . The vein 22 3 connects the inlet 18 to the outlet 20 3 and the vein 22 4 connects the inlet 16 to the outlet 20 4 . Each of the inputs 16 and 18 is thus connected to two veins 22 1 and 22 4 , and 22 2 and 22 3 , respectively. To do this, the duct 8 comprises a partition wall 24 (shaded area) disposed near the inlets 16 and 18 and essentially in the contact plane of the two hollow portions 8 1 and 8 2 . This partition wall is reported in that it is disposed between the two hollow portions 8 1 and 8 2 , this wall being distinct from said hollow portions. The reported separation wall 24 thus makes it possible to divide each of the two forced air flows in the inlets 16 and 18 by the fans in two fluid veins, in this case the fluid veins 22 1 and 22 4 for the inlet 16 and the fluid veins 22 2 and 22 3 for the inlet 18.

Les veines fluides sont délimitées grâce aux parois de séparation fixes 261, 262, 281, 282, 283, 284 et 285 des deux parties creuses 81 et 82. Ces parois de séparation fixes s'étendent généralement perpendiculairement au plan moyen de contact des deux parties creuses et, partant, de la paroi rapportée 24. La paroi rapportée 24 coopère avec les deux parois 261 et 262 en vue de délimiter, dans la partie creuse 82, les veines 221 et 222. Les deux parois 261 et 262 ont leurs bords libres adjacents à deux bords opposés de la paroi rapportée 24, respectivement. Parmi les deux autres bords de la paroi rapportée 24, l'un est adjacent à une paroi latérale de la partie creuse 82, le long de la charnière 83, et l'autre est situé dans les entrées 16 et 18 et forme un bord de séparation des débits de ces entrées.The fluid veins are delimited by the fixed partition walls 26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 and 28 5 of the two hollow portions 8 1 and 8 2 . These fixed separation walls extend generally perpendicularly to the mean contact plane of the two hollow parts and, consequently, of the added wall 24. The added wall 24 cooperates with the two walls 26 1 and 26 2 in order to delimit, in the hollow part 8 2 , the veins 22 1 and 22 2 . Both walls 26 1 and 26 2 have their free edges adjacent to two opposite edges of the insert wall 24, respectively. Of the two other edges of the attached wall 24, one is adjacent to a side wall of the hollow portion 8 2, along the hinge 8 3, and the other is located in the registers 16 and 18 and forms a separation edge of the flows of these inputs.

Les parties creuses 81 et 82 comprennent, chacune, une paroi de fond et des parois latérales, lesdites parois formant un profil en U. Les parois de séparation fixes s'étendent sur les parois de fond et sont jointives avec les parois latérales correspondantes.The hollow portions 8 1 and 8 2 each comprise a bottom wall and side walls, said walls forming a U-shaped profile. The fixed partition walls extend on the bottom walls and are contiguous with the corresponding side walls. .

Parmi les parois de séparation fixes, on compte les parois 281 et 282 sur la partie creuse 82, de forme généralement courbe et assurant un guidage approprié des veines fluides 221 et 222 vers les sorties 201 et 202. On compte également la paroi 283, toujours sur la partie creuse 82, de forme généralement courbe et assurant un guidage approprié de la veine fluide 223 vers la sortie 203. La veine fluide 223 s'étend, en aval de la paroi rapportée 24, sur toute l'épaisseur du conduit 8, c'est-à-dire dans les deux parties creuses 81 et 82. A cet effet, la paroi fixe 284 sur la partie creuse 81 coopère avec la paroi fixe 283. Il est à noter que la paroi fixe 284 coopère également avec la paroi rapportée 24 en ce qu'elle vient en contact avec cette dernière. Similairement la paroi fixe 285, sur la partie creuse 81, coopère également avec la paroi rapportée 24. Similairement à la veine fluide 223, la veine fluide 224 s'étend sur toute l'épaisseur du conduit en aval de la paroi rapportée 24.Among the fixed partition walls, there are the walls 28 1 and 28 2 on the hollow portion 8 2 , of generally curved shape and providing appropriate guidance of the fluid veins 22 1 and 22 2 to the outlets 20 1 and 20 2 . There is also the wall 28 3 , always on the hollow portion 8 2 , of generally curved shape and providing appropriate guidance of the fluid stream 22 3 to the outlet 20 3 . The fluid stream 22 3 extends, downstream of the added wall 24, over the entire thickness of the duct 8, that is to say in the two hollow portions 8 1 and 8 2 . For this purpose, the fixed wall 28 4 on the hollow portion 8 1 cooperates with the fixed wall 28 3 . It should be noted that the fixed wall 28 4 also cooperates with the added wall 24 in that it comes into contact with the latter. Similarly the fixed wall 28 5 , on the hollow portion 8 1 , also cooperates with the added wall 24. Similar to the fluid stream 22 3 , the fluid stream 22 4 extends over the entire thickness of the duct downstream of the wall reported 24.

Lorsque les deux parties creuses 81 et 82 sont rabattues l'une sur l'autre de manière à former le conduit 8, chacune des entrées 16 et 18 présente une portion du bord de séparation de la paroi rapportée 24, ces portions de bord assurant la séparation en deux de chacun des débits aux dites entrées. En d'autres termes, chacun des débits produit par les ventilateurs 10 et 12 (figures 1 et 2) est séparé en deux veines fluides à proximité de l'entrée, ce qui assure une répartition maitrisée des débits vers les différents sorties. De plus, la mise en place de la paroi rapportée 24 est particulièrement simple. La réalisation des parties creuses 81 et 82 est également avantageuse en ce qu'elles peuvent être réalisées d'un seul tenant par injection plastique dans un moule. Les parois délimitant le conduit et les parois de séparation fixes s'étendent essentiellement toutes dans la même direction, ce qui est favorable aux opérations démoulage.When the two hollow portions 8 1 and 8 2 are folded over one another so as to form the duct 8, each of the inlets 16 and 18 has a portion of the separation edge of the attached wall 24, these edge portions ensuring the separation in two of each of the flow rates at said inputs. In other words, each of the flow rates produced by the fans 10 and 12 ( figures 1 and 2 ) is separated into two fluid streams near the inlet, which ensures a controlled distribution of flows to the different outlets. In addition, the implementation of the reported wall 24 is particularly simple. The realization of the hollow portions 8 1 and 8 2 is also advantageous in that they can be made in one piece by plastic injection into a mold. The walls delimiting the duct and the fixed separation walls essentially all extend in the same direction, which is favorable to demolding operations.

La paroi rapportée 24 peut être collée ou plus simplement déposée dans un logement sur la partie creuse 82. Les deux parties creuses 81 et 82 peuvent être assemblées l'une à l'autre par clippage, collage et/ou vissage.The added wall 24 may be glued or more simply deposited in a housing on the hollow portion 8 2 . The two hollow portions 8 1 and 8 2 can be assembled to one another by clipping, gluing and / or screwing.

Les figures 4 à 6 illustrent un conduit d'air de refroidissement selon un deuxième mode de réalisation, étant entendu que ce conduit peut être mis en oeuvre dans un projecteur tel qu'illustré à la figure 1.The Figures 4 to 6 illustrate a cooling air duct according to a second embodiment, it being understood that this duct can be used in a projector as illustrated in FIG. figure 1 .

Les numéros de référence du premier mode de réalisation sont utilisés pour désigner les mêmes éléments ou des éléments correspondants, ces numéros étant toutefois majorés de 100 à des fins de distinction des deux modes de réalisation. Il est par ailleurs fait référence à la description de ces éléments en relation avec le premier mode de réalisation. Des numéros spécifiques sont utilisés pour les éléments spécifiques à ce mode de réalisation.The reference numbers of the first embodiment are used to designate the same elements or corresponding elements, these numbers being however increased by 100 for purposes of distinguishing between the two embodiments. Reference is also made to the description of these elements in relation to the first embodiment. Specific numbers are used for the specific elements of this embodiment.

Le conduit 108 est constitué, similairement à celui du premier mode, essentiellement de deux parties creuses 1081 et 1082 reliées entre elles par une charnière 1083.The conduit 108 is formed, similarly to the first mode, essentially of two hollow portions 108 1 and 108 2 connected together by a hinge 108 3.

A la différence du conduit des figures 1 à 3, le conduit 108 présente une seule entrée 116 (1161+1162) pour un seul ventilateur 110. Cela signifie que le débit d'air à l'entrée se voit divisé en quatre veines fluides 1221, 1222, 1223 et 1224 vers les différentes sorties 1201, 1202, 1203 et 1204, respectivement. Chacune des parties creuses 1081 et 1082 comprend une paroi de séparation fixe 1263 et 1264, respectivement, s'étendant dans l'axe de l'entrée. Ces deux parois 1263 et 1264 sont avantageusement alignées, étant toutefois entendu qu'elles peuvent également être décalées. La paroi de séparation rapportée 124 s'étend transversalement aux parois 1261, 1262, 1263 et 1264. Les parois 1261, 1262 et 1264 délimitent, avec la paroi rapportée 124, les veines 1221 et 1222 dans la partie creuse 1082. Similairement, les parois 1263, 1284 et 1285 délimitent, avec la paroi rapportée 124, les veines 1223 et 1224 dans la partie creuse 1081, à hauteur de la paroi rapportée 124, et dans les parties creuses 1081 et 1082, en aval de ladite paroi 124.Unlike the conduct of Figures 1 to 3 the conduit 108 has a single inlet 116 (116 1 + 116 2 ) for a single fan 110. This means that the air flow at the inlet is divided into four fluid streams 122 1 , 122 2 , 122 3 and 122 4 to the different outputs 120 1 , 120 2 , 120 3 and 120 4 , respectively. Each of the hollow portions 108 1 and 108 2 comprises a fixed partition wall 126 3 and 126 4 , respectively, extending in the axis of the inlet. These two walls 126 3 and 126 4 are advantageously aligned, it being understood that they can also be shifted. The added partition wall 124 extends transversely to the walls 126 1 , 126 2 , 126 3 and 126 4 . The walls 126 1 , 126 2 and 126 4 delimit, with the added wall 124, the veins 122 1 and 122 2 in the hollow portion 108 2 . Similarly, the walls 126 3 , 128 4 and 128 5 delimit, with the added wall 124, the veins 122 3 and 122 4 in the hollow part 108 1 , at the height of the added wall 124, and in the hollow portions 108 1 and 108 2 , downstream of said wall 124.

A la figure 6, on peut observer les moyens de clippage 130 assurant la liaison entre les deux parties creuses lorsqu'elles sont assemblées l'une à l'autre.To the figure 6 it is possible to observe the clipping means 130 connecting the two hollow parts when they are assembled to one another.

En relation avec les deux modes de réalisation ci-avant et de manière générale, les sorties du conduit peuvent former des canaux s'étendant transversalement à l'étendue générale du conduit. Ces canaux peuvent présenter une section convergente destinée à assurer une accélération du flux d'air de refroidissement.In relation to the two embodiments above and in general, the outputs of the conduit can form channels extending transversely to the general extent of the conduit. These channels may have a convergent section for accelerating the flow of cooling air.

De manière générale, il est entendu que le nombre d'entrées, de sorties et de veines fluides peut varier des deux modes de réalisation qui sont décrits ci-avant.In general, it is understood that the number of inputs, outputs and fluid veins can vary from the two embodiments described above.

Claims (18)

Projecteur (2) notamment pour véhicule automobile, comprenant : - plusieurs modules lumineux (4) ; - un conduit (8 ; 108) d'air de refroidissement des modules lumineux (4), avec au moins une entrée (16, 18 ; 116) d'un flux d'air d'un ou plusieurs ventilateurs (10, 12 ; 110), plusieurs sorties d'air (201, 202, 203, 204 ; 1201, 1202, 1203, 1204) vers les modules lumineux (4), et un passage reliant la ou les entrées avec les sorties ; caractérisé en ce que
le conduit (8; 108) comprend au moins une paroi rapportée (24, 124) de séparation du passage.Projector (2) in particular for a motor vehicle, comprising: - several light modules (4); - a duct (8; 108) of cooling air of the light modules (4), with at least one inlet (16, 18; 116) of an air flow of one or more fans (10, 12; 110), a plurality of air outlets (20 1 , 20 2 , 20 3 , 20 4 , 120 1 , 120 2 , 120 3 , 120 4 ) to the light modules (4), and a passage connecting the input (s) with the exits ; characterized in that
the duct (8; 108) comprises at least one insert wall (24, 124) for separating the passage. Projecteur (2) selon la revendication 1, caractérisé en ce que la ou au moins une des parois rapportées (24, 124) est adjacente à l'entrée (116) ou au moins une des entrées (16, 18).Projector (2) according to claim 1, characterized in that the or at least one of the walls (24, 124) is adjacent to the inlet (116) or at least one of the inputs (16, 18). Projecteur (2) selon l'une des revendications 1 et 2, caractérisé en ce que le conduit (8 ; 108) s'étend généralement dans un plan, la ou au moins une des parois rapportées (24 ; 124) étant parallèle audit plan ou formant un angle de moins de 15°, préférentiellement de moins de 10°, avec ledit plan.Projector (2) according to one of claims 1 and 2, characterized in that the duct (8; 108) extends generally in a plane, the or at least one of reported walls (24; 124) being parallel to said plane or forming an angle of less than 15 °, preferably less than 10 °, with said plane. Projecteur (2) selon l'une des revendications 1 à 3, caractérisé en ce que la ou au moins une des parois rapportées (24, 124) est configurée pour diviser le flux d'air, préférentiellement à l'entrée (16, 18 ; 116) dudit conduit, en au moins deux veines séparées (221, 222, 223, 224 ; 1221, 1222, 1223, 1224) vers les différentes sorties (201, 202, 203 et 204 ; 1201, 1202, 1203, 1204).Projector (2) according to one of claims 1 to 3, characterized in that the or at least one of the reported walls (24, 124) is configured to divide the air flow, preferably at the inlet (16, 18 116) of said duct, in at least two separate veins (22 1 , 22 2 , 22 3 , 22 4 , 122 1 , 122 2 , 122 3 , 1224) to the different outlets (20 1 , 20 2 , 20 3 and 4 , 120 1 , 120 2 , 120 3 , 120 4 ). Projecteur (2) selon l'une des revendications 1 à 4, caractérisé en ce que la ou les parois rapportées (24, 124) coopèrent avec une ou plusieurs parois de séparation fixes (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) de manière à diviser le flux d'air, préférentiellement à l'entrée (116) ou aux entrées (16, 18) dudit conduit, en au moins quatre veines séparées (221, 222, 223, 224 ; 1221, 1222, 1223, 1224) vers les différentes sorties (201, 202, 203 et 204 ; 1201, 1202, 1203, 1204).Projector (2) according to one of claims 1 to 4, characterized in that the one or more inserts (24, 124) cooperate with one or more fixed partition walls (26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 , 28 5 ; 126 1 , 126 2 , 126 3 , 126 4 , 128 4 , 128 5 ) so as to divide the flow of air, preferably at the inlet (116) or at the inlet (16). , 18) of said duct, in at least four separate veins (22 1 , 22 2 , 22 3 , 22 4 ; 122 1 , 122 2 , 122 3 , 122 4 ) to the different outlets (20 1 , 20 2 , 20 3 and 4 , 120 1 , 120 2 , 120 3 , 120 4 ). Projecteur (2) selon la revendication 5, caractérisé en ce que la ou les parois de séparation fixes (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) sont transversales, préférentiellement perpendiculaires, à la ou aux parois rapportées (24 ; 124).Projector (2) according to claim 5, characterized in that the fixed partition or walls (26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 , 28 5 ; 126 1 , 126 2 , 126 3 , 126 4 , 128 4 , 128 5 ) are transverse, preferably perpendicular, to the reported wall (s) (24; 124). Projecteur (2) selon l'une des revendications 1 à 6, caractérisé en ce que le conduit (8 ; 108) comprend au moins deux parties creuses (81, 82 ; 1081, 1082) assemblées l'une à l'autre, la ou au moins une des parois rapportées (24 ; 124) étant disposée entre lesdites parties creuses (81, 82 ; 1081, 1082).Projector (2) according to one of claims 1 to 6, characterized in that the duct (8; 108) comprises at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) assembled one to the other. the other, the at least one of the insert walls (24; 124) being disposed between said hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ). Projecteur (2) selon la revendication 7, caractérisé en ce que les au moins deux parties creuses (81, 82 ; 1081, 1082) forment au moins une charnière (83 ; 1083) les reliant et permettant de les rapprocher en vue de les assembler, ladite charnière (83 ; 1083) étant préférentiellement venue de matière avec lesdites parties creuses (81, 82 ; 1081, 1082).Projector (2) according to claim 7, characterized in that the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) form at least one hinge (8 3 ; 108 3 ) connecting them and allowing them to bringing together to assemble them, said hinge (8 3 ; 108 3 ) being preferably integral with said hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ). Projecteur (2) selon l'une des revendications 7 et 8, caractérisé en ce que les au moins deux parties creuses (81, 82 ; 1081, 1082) sont assemblées suivant un contact mutuel généralement plan, la ou au moins une des parois rapportées (24; 124) s'étendant parallèlement audit plan ou formant avec ledit plan un angle de moins de 15°, préférentiellement de moins de 10°.Projector (2) according to one of claims 7 and 8, characterized in that the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) are assembled in mutual contact generally plane, the or at least one of the reported walls (24; 124) extending parallel to said plane or forming with said plane an angle of less than 15 °, preferably less than 10 °. Projecteur (2) selon l'une des revendications 7 à 9, caractérisé en ce que les au moins deux parties creuses (81, 82 ; 1081, 1082) délimitent l'entrée (116) ou au moins une des entrées (16, 18), suivant une section transversale de ladite ou desdites entrées.Projector (2) according to one of claims 7 to 9, characterized in that the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) delimit the entry (116) or at least one of the entries (16, 18), in a cross section of said one or more entries. Projecteur (2) selon l'une des revendications 7 à 10, caractérisé en ce que chacune des sorties (201, 202, 203 et 204 ; 1201, 1202, 1203, 1204) est intégralement formée sur une des au moins deux parties creuses (81, 82 ; 1081, 1082).Projector (2) according to one of Claims 7 to 10, characterized in that each of the outlets (20 1 , 20 2 , 20 3 and 20 4 ; 120 1 , 120 2 , 120 3 , 120 4 ) is integrally formed on one of the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ). Projecteur (2) selon l'une des revendications 7 à 11, caractérisé en ce qu'au moins une, préférentiellement chacune, des sorties (201, 202, 203, 204 ; 1201, 1202, 1203, 1204) forme un canal s'étendant transversalement au conduit (8 ; 108).Projector (2) according to one of Claims 7 to 11, characterized in that at least one, preferably each, of the outlets (20 1 , 20 2 , 20 3 , 20 4 , 120 1 , 120 2 , 120 3 , 120 4 ) forms a channel extending transversely to the conduit (8; 108). Projecteur (2) selon la revendication 12, caractérisé en ce que le canal formé par la ou les sorties (201, 202, 203, 204 ; 1201, 1202, 1203, 1204) présente une section avec un profil convergent.Projector (2) according to Claim 12, characterized in that the channel formed by the outlet (s) (20 1 , 20 2 , 20 3 , 20 4 , 120 1 , 120 2 , 120 3 , 120 4 ) has a section with a convergent profile. Projecteur (2) selon l'une des revendications 5 et 6 et selon l'une des revendications 7 à 13, caractérisé en ce que chacune des au moins deux parties creuses (81, 82 ; 1081, 1082) comprend une paroi de fond, la ou chacune des parois de séparation fixes (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) s'étendant sur une desdites parois de fond.Projector (2) according to one of claims 5 and 6 and according to one of claims 7 to 13, characterized in that each of the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) comprises a bottom wall, the or each of the fixed partition walls (26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 , 28 5 ; 126 1 , 126 2 , 126 3 , 126 4 , 128 4 , 128 5 ) extending over one of said bottom walls. Projecteur (2) selon la revendication 14, caractérisé en ce que chacune des au moins deux parties creuses (81, 82 ; 1081, 1082) comprend des parois latérales, la ou chacune des parois de séparation fixes (261, 262, 281, 282, 283, 284, 285; 1261, 1262, 1263, 1264, 1284, 1285) étant en contact avec au moins une des parois latérales.Projector (2) according to claim 14, characterized in that each of the at least two hollow portions (8 1 , 8 2 ; 108 1 , 108 2 ) comprises side walls, the or each of the fixed partition walls (26 1 , 26 2 , 28 1 , 28 2 , 28 3 , 28 4 , 28 5 ; 126 1 , 126 2 , 126 3 , 126 4 , 128 4 , 128 5 ) being in contact with at least one of the side walls. Projecteur (2) selon l'une des revendications 14 et 15, caractérisé en ce que les parois de séparation fixes comprennent au moins une paroi de cloisonnement (261, 262; 1261, 1262) transversale au conduit, avec un bord adjacent à un bord de la ou d'une des parois rapportées (24 ; 124), ladite ou lesdites parois de cloisonnement étant préférentiellement généralement droites.Projector (2) according to one of claims 14 and 15, characterized in that the fixed partition walls comprise at least one partition wall (26 1 , 26 2 , 126 1 , 126 2 ) transverse to the duct, with an edge adjacent to an edge of the one or more of the reported walls (24; 124), said one or more partition walls preferably being generally straight. Projecteur (2) selon l'une des revendications 14 à 16, caractérisé en ce que les parois de séparation fixes comprennent au moins une paroi de guidage (281, 282, 283, 284, 285; 1284, 1285) s'étendant suivant le conduit (8 ; 108), ladite ou lesdites parois de guidage étant préférentiellement courbes.Projector (2) according to one of Claims 14 to 16, characterized in that the fixed partition walls comprise at least one guide wall (28 1 , 28 2 , 28 3 , 28 4 , 28 5 , 128 4 , 128 5 ) extending along the conduit (8; 108), said one or more guide walls being preferably curved. Projecteur (2) selon les revendications 16 et 17, caractérisé en ce que la ou les parois de cloisonnement (261, 262; 1261, 1262) sont sur une des au moins deux parties creuses (82 ; 1082) du conduit (8 ; 108) et la ou au moins une des parois de guidage (284, 285; 1284, 1285) sont sur une autre desdites au moins deux parties creuses (81 , 1081).Projector (2) according to claims 16 and 17, characterized in that the partition wall or walls (26 1 , 26 2 ; 126 1 , 126 2 ) are on one of the at least two hollow portions (8 2 ; 108 2 ) the duct (8; 108) and the or at least one of the guide walls (28 4 , 28 5 ; 128 4 , 128 5 ) are on another one of the at least two hollow portions (8 1 , 108 1 ).
EP16190426.3A 2015-10-09 2016-09-23 Cooling air duct for motor vehicle headlight Active EP3153770B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1559625A FR3042259B1 (en) 2015-10-09 2015-10-09 COOLING AIR DUCT FOR MOTOR VEHICLE PROJECTOR

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EP3153770A1 true EP3153770A1 (en) 2017-04-12
EP3153770B1 EP3153770B1 (en) 2023-05-17

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EP (1) EP3153770B1 (en)
CN (1) CN107023788B (en)
FR (1) FR3042259B1 (en)

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Also Published As

Publication number Publication date
US10451244B2 (en) 2019-10-22
CN107023788B (en) 2020-11-06
EP3153770B1 (en) 2023-05-17
CN107023788A (en) 2017-08-08
FR3042259A1 (en) 2017-04-14
FR3042259B1 (en) 2018-09-07
US20170102120A1 (en) 2017-04-13

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