FR2936751A1 - Headlight assembling device for motor vehicle, has connection unit connecting case on structural element that houses channel, where channel circulates air from air treating unit that has ventilation, heating and/or air conditioning unit - Google Patents

Abstract

The device has a connection unit connecting a case (18) on a structural element of a vehicle and interposed between an engine compartment and a cab interior of the vehicle. The structural element is constituted of a transversal reinforcing post (1) that reinforces the cab interior of the vehicle. The structural element houses an air circulation channel (21) that circulates air from a thermal air treating unit, where the air is in thermal contact with a light source i.e. LED. The air treating unit comprises a ventilation, heating and/or air conditioning installation of the vehicle. An independent claim is also included for a headlight for a motor vehicle.

Description

Headlamp for a motor vehicle mounted on a reinforcing beam housing an air circulation channel.

The invention is in the field of lighting devices for a motor vehicle, and more particularly the projectors equipping such vehicles. It relates to a device for mounting such a projector on the vehicle, and a projector incorporating means that includes the mounting device. The projector of the present invention is more precisely of the type comprising a housing closed by a transparent wall constituted by a region of the windshield of the vehicle, this housing being mounted on the vehicle via a structural element interposed between the compartment engine and the passenger compartment of the vehicle.

Automotive headlamps are composed in their generality of a housing which is closed by a transparent wall through which emerge one or more light beams. This housing houses at least one optical module which combines a light source and an optical system for reflecting the light produced by the light source for the emission of the light beam (s). This housing is also capable of accommodating various functional elements, such as mobility means of the optical system, covers limiting the range of one or more light beams emitted by the projector, or even electronic and / or mechanical means of control of the implementation of the various members contained inside the housing, such as the light source and / or a mobility actuator of the optical module and / or one or more caches. The optical system associated with the light source is for example constituted by at least one reflector and / or a light guide. The projector is commonly mounted on a structural element of the vehicle through the housing.

A problem lies in the ease of access for an operator to the interior volume of the housing, for a maintenance operation for example. Such a maintenance operation consists in particular in a replacement of the light source, or to intervene on any other member housed inside the housing. The housing is commonly mounted at the front of the vehicle, being carried by a frame member, and access to its interior volume is obtained from the engine compartment, which is difficult.

It has been proposed by JP10086745 (KANTO JIDOSHA KOGYO) to operate an area of the windshield of the vehicle to form the transparent closing wall of the housing. The headlamp is no longer housed in the engine compartment, but in an area of easier access between the engine compartment and the passenger compartment of the vehicle. More particularly, the housing is mounted at a dashboard that includes the vehicle at the front of the passenger compartment, which allows easy access to its interior from the interior of the passenger compartment. Furthermore, the housing is sealed for closure against the area of the windshield operated to form its transparent wall.

However, and despite the advantages offered by such a solution for setting up the projector on the vehicle, such an approach deserves to be perfected. However, it must be taken into account that such improvements must be obtained by avoiding unduly increasing the costs of obtaining and / or installing the projector on the vehicle, with regard to the newly obtained advantages.

The object of the present invention is to provide an improvement of a mounting device on a motor vehicle of a projector housed in an easier to access area between the engine compartment and the passenger compartment of the vehicle.

The object of the present invention is a mounting device on a vehicle of a headlamp comprising a housing provided with a transparent closing wall, this mounting device implementing means for connecting the housing to a structural element of the vehicle. intended to be interposed between the engine compartment and the passenger compartment of the vehicle. Said structural element is constituted by a transverse reinforcement beam of a vehicle cabin, which houses at least one air circulation channel coming from a heat treatment unit of air that includes a ventilation, heating installation and / or air conditioning equipping the vehicle. This transverse reinforcing beam of the passenger compartment of the vehicle, is anchored at its ends on the chassis.

Such an arrangement aims in particular to optimize the benefits offered by this organization of the housing, to best meet the various operating requirements of a car projector, while avoiding increasing or even limiting the costs of the means to implement. In addition to the advantages offered by the installation of the projector in an area easily accessible by an operator, the mechanical installation of the housing on the reinforcing beam is easy to achieve by any means of attachment. The mechanical attachment of the housing to the reinforcing beam is able to be made robust easily and at lower cost.

In addition, thanks to the implementation of the projector housing between the engine compartment and the passenger compartment of the vehicle, the projector is no longer at the front bumper of the vehicle and is thus less exposed to shocks with pedestrians.

This arrangement also makes it possible to evacuate the heat produced by the light sources, more particularly in the case of LEDs (Electroluminescent Diode). Indeed, the light source or sources produce heat that is necessary to evacuate. This heat dissipation is made all the more necessary when the light source consists of one or more LEDs (Electroluminescent Diode), due to the loss of quality of the light emitted by the LEDs when placed in an environment of excessive and / or inappropriate heat. Similarly, this arrangement allows to evacuate the condensation on the inner face of the transparent wall, which is caused by certain atmospheric conditions and which may affect the quality of the light beam emitted by the projector.

The mechanical installation of the housing on the reinforcing beam is performed by connecting means associating mechanical fixing means of the housing on the reinforcing beam and means for communicating aeraulic interior volume of the housing with said channel. The fastening means may be fastening means by interlocking, preferably elastic and / or irreversible, by sealing or by means of fasteners reported jointly engaged on the housing and on the reinforcing beam, such as staples. or the like. Preferably, the implantation of the housing on said reinforcing beam avoids having to design for this housing provisions relating to its resistance in case of violent impact, this function being obtained from the very design of the reinforcing beam.

Preferably, this transparent closure wall is formed by an area of the windshield equipping the vehicle, to make the best use of the windshield to form the transparent closing wall of the housing.

Preferably, the ventilation communication means consist of at least one air passage formed between the housing and the reinforcing beam for conveying at least one fraction of air conveyed by the channel towards the inside of the housing.

The assembly associating the reinforcing beam carrier of at least one said projector box is adapted to constitute a robust element of original equipment on the vehicle. The housing and the reinforcing beam being made of rigid members, their mechanical assembly to one another allows interposed between them a compressible sealing member ensuring the sealing of the housing. Such a seal is useful not only against an undesirable infiltration of particles, but also for obtaining a sealed airtight junction between the reinforcing beam and the housing. This sealed airtight junction is easily achievable in order to take at least a fraction of air from the channel to the interior volume of the housing for cooling purposes. More particularly, the proximity between the housing and the reinforcing beam is adapted to be used to provide an air passage between them from openings which are advantageously formed in the walls of the housing and the beam and which are placed next to each other, and preferably at the outlet of each other. The aeraulic connection between the housing and the ventilation, heating and / or air conditioning installation is simplified for cooling the interior volume of the housing, either from the formation of the said air passage, or by the intermediate of an auxiliary duct connecting any channel of the reinforcing beam to the housing. The channel can be chosen and determined according to the characteristics of the air that it conveys and / or its aeration destination of a specific area of the passenger compartment.

More particularly, the channel is advantageously dedicated to defrosting and / or demisting the windshield, so that it is able to provide such a function for the inner face of the transparent wall closing the housing, while facilitating the junction mechanical and / or aeraulic housing on the reinforcing beam due to the location and / or orientation of such a channel near the windshield. Another advantage is that the defogging and / or defrosting system of the windshield is generally controlled independently of the thermal regulation system of the passenger compartment of the vehicle.

The said connecting means include in particular mechanical fixing means of the housing on the reinforcing beam and means for placing in communication aeraulic the interior volume of the housing with the channel.

The junction made between the structural element which is constituted by the reinforcing beam accommodating the channel, makes it possible to obtain the dual functionality: *) of easy installation of the projector casing in an area of the vehicle easily accessible by an operator, and *) facilitating airflow communication between the housing and the ventilation, heating and / or ventilation system for cooling its interior volume, limiting the pressure losses and heat losses.

In general, the positioning of the projector makes it possible to couple it directly to the ventilation, heating and / or air-conditioning system of the vehicle: it is thus possible to obtain, for the interior of the projector, an air whose humidity and / or the temperature are regulated, thereby improving the operation and life of the elements contained in the projector and preventing the formation of frost or fog; in particular, the air will be injected in temperatures in a limited range, between 15 and 30 ° C, usually close to 20 ° C; - We can get a thermal environment around the projector much cooler than under the bonnet; because of these two advantages, the thermal dimensioning is simplified; in particular, the radiators attached to the LEDs may be less bulky than in conventional solutions, and it will be possible to dispense with radiators integrated in or against the wall of the housing of the projector; - clean air can be obtained; if a dust filter is still added in the projector, there will be no clogging, and the filter will be set up for life (ie for a duration at least equal to the life of the projector) - it is no longer necessary to use fans in the projector; this reduces the noise level; It will be possible for these purposes to size the radiators to allow the installation of ventilation, heating and / or air conditioning of the vehicle, time to start before the LEDs are damaged, especially in case of intense external light ( exposure to sunbeams focused on the LEDs by the optical systems), - the mechanical zero adjustment of the beam correction emitted by the headlamp, can be carried out from the passenger compartment with a shorter cable length than if the headlamp was attached to the front bumper; it follows a reduction in cost and weight of the vehicle.

Also when the transparent closing wall of the housing is constituted by a zone of the windshield: - it is possible to benefit from the athermic windshield treatment to protect the projector from the sun (weakly absorbing treatment for a beam LEDs 5 mainly consisting of blue and yellow-green and very little red) - the cleaning of the ice and the removal of the snow are ensured by the wiping system.

The air-to-air communication can be directly carried out between the housing and the reinforcing beam via an air passageway formed from air intake and air outlet mouths arranged through the openings. walls respectively of the housing and the reinforcing beam. Branching means for the air conveyed by the channel to the interior volume of the housing can be easily implanted, in particular being constituted by a deflector placed inside the channel in the vicinity of the air passage.

In the headlamp according to the present invention, a light beam capable of being emitted by the headlamp is generated by at least one optical module of the headlamp, the aeraulic communication means being arranged so that a portion of the circulating air flow in the channel flows in the housing and in contact with the light source (s) of the optical module and / or with an element in thermal contact with the light source (s). Preferably, the projector can generate several beams by means of several optical modules. Preferably, the light sources are electroluminescent diodes. According to a preferred embodiment, the ventilation communication means consist of at least one air passage, which is formed between the housing and the reinforcing beam. This air passage is adapted to allow a conveyance of at least a fraction of air conveyed by the first channel which is deflected towards the inside of the housing. Such an air passage is easily achievable because of the proximity between the housing and the reinforcing beam, and more particularly from a housing installation against a wall of the reinforcing beam defining the channel. Openings correspondingly formed through the walls respectively of the housing and the reinforcing beam make it possible to obtain at a lower cost the formation of the air passage, while avoiding the loss of loads and the thermal losses of the air taken since the installation for its routing to the interior volume of the housing. In addition, the opening formed through the wall of the reinforcing beam to form an air outlet mouth, can be easily made by cutting this wall. Such a cutout can be exploited by folding the cut portion of the wall towards the inside of the channel, to form the deflector capable of at least partially deflecting the flow of air flowing inside the channel towards the interior volume. of the case.

According to a preferred embodiment, the air passage is formed by an air outlet mouth and an air inlet mouth which are respectively formed through the wall of the reinforcing beam and the wall of the housing. The outlets of these air intake and air outlet mouths are advantageously placed in juxtaposition with one another. As referred to above, the air outlet mouth is advantageously formed by cutting and folded towards the inside of the cut portion of the beam to form the deflector. Such a solution is particularly advantageous because of the direct obtaining of air-to-air communication between the channel and the interior volume of the housing, with aeraulic pressure losses and thermal losses that can be considered negligible.

According to another variant embodiment, the air passage is formed by a secondary duct air junction between the housing and the first channel. This other variant of embodiment is disadvantageous compared with the previous one, but is likely to be implemented in the case where the structural organization of the reinforcing beam does not make it possible to have a desired specific channel in direct aeraulic contact with the casing via the air passage.

In particular, in the case where the selected channel has no delimiting wall capable of being placed against a wall of the housing due to the arrangement of the reinforcing beam and / or the relative positions between the beam and the housing, it a secondary duct is then used to place the channel and the housing in aeraulic communication. Such a solution nevertheless remains advantageous because of the effective proximity between the casing and the reinforcing beam on which it is fixed, the secondary duct being of small extension and consequently inducing only very few pressure drops and / or thermal losses. It will be understood by weak extension the relative notion of an extension of the secondary duct from the reinforcement beam to the housing that it supports, with regard to an extension of the secondary duct from the reinforcement beam and / or from the installation of heating and / or air conditioning ventilation to the front area of the vehicle where the projectors are commonly installed.

Preferably and regardless of the arrangements for setting the internal volume of the housing and the channel in aeraulic communication, the latter houses a deflector to induce at least a partial diversion of the flow of air conveyed by the channel through the air passage. towards the interior volume of the housing. This deflector and the air outlet mouth are preferably jointly formed by cutting and folding the wall of the reinforcing beam towards the inside of the channel.

The deflector is in particular a fixed member advantageously from the wall of the reinforcing beam. However, and according to an improved embodiment, the baffle is likely to be a movably mounted member, indifferently on the housing and / or on the reinforcing beam. Such mobility aims to allow an adjustment of the flow rate of the air flow taken from inside the channel to be routed to the inside of the housing according to the necessary ventilation of its interior volume. In this case, the deflector is adapted to be operated between a closed position in which it prohibits an air intake inside the housing and at least one open position in which it allows the communication between the air aeraulic between channel and the interior volume of the case. Maneuvering the deflector in the open position is likely to correspond to a plurality of opening positions respectively allowing a more or less significant diversion of the air flow from the first channel to the interior volume of the housing. The operation of the deflector is indifferently a discrete or continuous maneuver.

The housing preferably comprises a venting mouth of the air admitted from the channel. According to one embodiment, the exhaust mouth is likely to be placed in aeraulic communication with any air circulation channel housed in the reinforcing beam. Such a channel preferably corresponds to the one from which the air conveyed towards the interior of the housing is taken, in order to avoid disturbing and / or complicating the operation of the installation taking into account the temperature difference of the exhausted air. out of the housing and that of the air admitted inside the housing. However, this exhaust air out of the housing having been heated, it is likely to be exploited for the operation of the installation and be in this case evacuated to another channel of the installation where it can be used.

The implementation of the installation is likely to be required by control means assigned to the cooling of the housing according to the characteristics of the air contained therein, such as the temperature and / or the humidity level. In the case where the implementation of the installation has only been required by such control means, the evacuation of the hot air out of the housing can be carried out according to an alternative embodiment to a transport channel. air ventilating an area of the passenger compartment that may not cause discomfort to passengers, such as under the dashboard. According to another variant embodiment, the reinforcing beam and / or the thermal unit of the installation may be equipped with selective air distribution members whose implementation is placed under the control of said means. control. Such selective air distribution members are able to be operated between an open position in which the air flowing through the installation and in particular the various channels that comprise the reinforcing beam are capable of ventilating the passenger compartment. , and a closed position in which the air flowing through the installation and in particular the channel in aeraulic communication with the housing is only used for ventilation of the latter.

According to another preferred embodiment, the exhaust air outlet is in aeraulic communication with the outside of the passenger compartment, and in particular with the engine compartment through an opening or the like formed through the deck and in communication aeraulic with the exhaust air outlet, or directly in the housing, opening for example in the engine compartment or outside the vehicle.

The channel from which the air used for ventilation of the housing is taken is indifferently a channel specifically dedicated to the ventilation of the housing or a channel which is also dedicated to ventilation of the passenger compartment. This channel is preferably a channel dedicated to the defrosting and / or defogging of the windshield and / or the side windows of the vehicle, to obtain at least a cooling of the interior volume of the housing and, insofar as such a deicing control and / or defogging is required by the installation itself, to obtain a defrosting and / or demisting of the inner face of the transparent wall of the headlight together with that of the windshield and / or side windows.

Preferably, any of the air passage and / or the air outlet mouth is provided with a particulate filter or similar purifying member. Such particulate filters are able to preserve the housing from an undesirable introduction of impurities possibly conveyed by the flow of air conveyed by the channel and / or if necessary from the engine compartment through the outlet mouth. It will be noted, however, that the presence of such a particulate filter in the area of the air passage is incidental, if not unnecessary, in the case where the flow of air flowing inside the channel is previously treated by at least one similar particle filter that includes the installation and which is placed upstream of the air passage in the direction of flow of the air flow inside the channel.

The mechanical fastening means are indifferently of the type by interlocking cooperating members respectively provided on the housing and on the beam, and / or are reported in joint engagement therewith. Other mechanical fastening means are possible, such as sealing for example.

The present invention also relates to a motor vehicle headlight incorporating means that comprises a device for mounting the housing of this projector on a structural element of the vehicle. Such a projector is in accordance with the mounting device which has just been described, according to any of its characteristics taken separately or in combination. This projector is intended to be fixed on a mounting device, according to the invention, of this projector on a structural element of the vehicle. It comprises a housing containing optical modules capable of generating at least one light beam, and mechanical fixing means on a transverse reinforcement beam of the passenger compartment of the vehicle, which comprises a ventilation, heating and / or air conditioning installation. equipping the vehicle. This projector comprises means for placing aerator communication of the interior volume of a projector housing with any channel housed inside a reinforcing beam.

Preferably, said transparent wall is formed by an area of the windshield fitted to the vehicle.

The aeraulic communication establishment means comprise in particular a said air inlet mouth which is formed through the wall of the housing and which is adapted to be placed in aeraulic communication with a said air outlet mouth that the beam comprises. reinforcement. This aeraulic communication is in particular obtained by a mechanical fixing of the housing against the beam, an air passage being formed between them from the formation of the air inlet mouth and the air outlet mouth whose outlets are placed opposite one another.

Preferably, the projector comprises an air outlet mouth adapted to be placed in aeraulic communication with an opening. This opening is likely to be formed through the wall of the reinforcing beam to induce an air outlet from the housing to any channel that includes the reinforcing beam. However, it is preferred to provide said opening through the vehicle deck, to evacuate the air admitted inside the housing to the engine compartment. The air communication between the exhaust port and the opening formed through the deck is in particular carried out via a secondary conduit integrated into the housing or reported. Preferably, the air inlet mouth and / or the air outlet mouth is / are provided (s) with a particulate filter.

The housing of the projector is integrated in a rigid set of original equipment on the chassis of a motor vehicle, consisting of at least one said housing and the reinforcing beam.

Such a rigid element of original equipment is particularly advantageous for reducing the costs of assembly of the various components of the vehicle on a chassis. The rigid element is in particular assembled to the frame via the ends of the reinforcing beam. During the installation of the windshield, a seal is formed in the region of the windshield corresponding to the transparent closing wall of the housing, being for example reported at the periphery of the outlet of the housing to be applied. against the windshield.

The rigid assembly may include one or more selective air distribution members, such as flap, drum flap, butterfly flap or similar members, which are placed inside the channel assigned to the ventilation of the housing and / or inside one or more other channels housed inside the reinforcing beam. These selective air distribution members are operable between at least one open position in which the air conveyed by the channels is able to be evacuated for ventilation of the passenger compartment, and a closed position in which only the casing is ventilated from the air routed through the channel assigned to it.

The implementation of the ventilation system, heating and / or air conditioning is placed under the control of said control means assigned to the ventilation of the housing, so that a flow of air can be channeled through the channel in the absence of a request for ventilation of any area of the passenger compartment. These control means comprise for example a temperature sensor and / or a sensor of the moisture content of the air contained inside the housing. The dependence of the installation by the control means is able to concern the implementation of heat treatment organs of the air admitted inside the installation, and / or at least one blower causing an air flow through the installation, and / or the operation of one or more components that includes the installation to allow or not air circulation to the interior of the passenger compartment. For example, an implementation of the installation may not be required by the passenger and / or the control means specifically dedicated to the installation, and nevertheless be required by said control means. In this case, the installation and / or one of the organs that it comprises is capable of being implemented, and one or more shutters that it comprises may be placed in the closed position of the channels exhaust air out of the installation to the interior of the passenger compartment, such as the different channels housed in the reinforcement beam.

The present invention will be better understood on reading the description which will be made of exemplary embodiments, in connection with the figures of the attached plates, in which: Fig.1 and fig.2 are respectively exploded perspective illustrations and assembled, an embodiment of the present invention of a reinforcing beam for receiving a housing of a projector of this vehicle. Fig.3 and Fig.4 are schematic illustrations of mounting examples according to the present invention, a projector on a reinforcing beam as shown in the previous figures.

In fig.1 and fig.2, a reinforcement beam of a vehicle interior is organized for the circulation through air from a heat treatment unit that includes a heating, ventilation system and / or air conditioning of the vehicle, for aeration of specific areas of the passenger compartment. Such a reinforcing beam 1 is in accordance with the teachings delivered by the document EP1614563. Note however that this reinforcing beam is illustrated for exemplary embodiment of the present invention, and that any reinforcing beam of the passenger compartment of the vehicle which houses at least one air flow channel from a processing unit thermal of a ventilation, heating and / or air conditioning of the vehicle is likely to be used for the present invention. Preferably, this beam is housed under the dashboard of the vehicle, more preferably still supports this dashboard.

More particularly, the reinforcing beam 1 is arranged to accommodate at least one casing 2, 3 forming a selective air distribution module, or even distributors 4, 5, such as shutters or the like it receives through 6, 7. The beam 1 is longitudinally extended in a constant direction and is open at its ends to provide windows 8, 9 through which the boxes 2, 3 are introduced for their mounting inside the door. Beam 1. The ends of the reinforcing beam 1 are equipped with end pieces 10, 11 for reinforcing and fixing the reinforcing beam 1 on a supporting structure of the passenger compartment of the vehicle, and in particular on the amounts that the frame comprises of the vehicle. Various air circulation channels are formed inside the reinforcing beam 1, being delimited by the outer walls of the latter and / or by the boxes it houses. In the exemplary embodiment illustrated, the reinforcing beam 1 comprises an air intake opening 12 which is formed substantially in the middle zone of the lower face of the reinforcing beam 1. Exhaust vents for aeration rear 13 respectively right and left are formed at the corresponding ends of the lower face of the reinforcing beam 1. Evacuation vents for the right and left lateral ventilation respectively 14 are formed at the corresponding ends of the front face of the beam 1 reinforcement. Evacuation vents for the central ventilation 15 are provided in the central zone of the end face of the reinforcing beam 1. The reinforcing beam 1 also comprises right and left discharge vents for the demisting of the side windows of the vehicle, and exhaust vents for defrosting and / or demisting the windshield. The vents for defogging and / or defrosting of the windshield are provided in the median area of the rear face of the reinforcing beam 1, and are not visible in the figures.

It will be understood that each of these outlets corresponds to the outlet of a respective channel housed inside the reinforcing beam 1, and that the latter comprises several air circulation channels, which are respectively assigned to the ventilation of specific areas of the passenger compartment of the vehicle.

In Fig.3 and Fig.4, a projector 16 is mounted on the reinforcing beam 1. This projector 16 comprises an optical module 17 associating a light source and an optical system for the emission of a light beam. The optical module 17 is housed inside a housing 18, whose front face is closed by a transparent wall formed by an area of the windshield 19 equipping the vehicle. In the exemplary embodiment illustrated, the housing 18 houses a single optical module 17. However, the housing 18 is able to accommodate either one or more optical modules 17 dedicated to the emission of light beams of respective scope.

The mounting of the housing 18 on the reinforcing beam 1 is effected by means of mechanical fixing means 20 and means for communicating aerodynamically the internal volume of the housing 18 with one of the channels 21 that includes the reinforcement beam 1. The mechanical fastening means 20 consist for example of staples or the like, and the ventilation communication means consist of an air passage 22 formed between the reinforcing beam 1 and the housing 18. A deflector 23 is placed in the downstream zone of the air flow 24 conveyed by the channel 21 near the air passage 22, so that a part of this air flow 24 is diverted towards the interior volume of the housing 18 in order to cool the air it contains. The air passage 22 is formed from an air outlet mouth formed through the wall of the reinforcing beam 1, and an air inlet mouth 12 formed through the wall of the housing 18. The outlets of these inlet and outlet air outlets are placed in juxtaposition to form the air passage 22.

The air outlet mouth is formed by cutting the wall of the reinforcing beam 1, and by folding the cut inwardly of the channel 21 to form the deflector 23. The air passage 22 is incidentally provided with a particle filter 25, to prevent unwanted introduction into the housing 18 of particles capable of being entrained by the air flow 24 conveyed by the channel 21. The area of the windshield 19 operated to form the transparent closing wall of the housing 18 is preferably placed on the path traveled by the front wiper 28 of the vehicle, to allow cleaning of its outer face.

The assembly composed by the housing 18 mounted on the reinforcing beam 1 constitutes a rigid and integral element which is adapted to be installed as a first gear on the vehicle. This rigid element is fixed on the vehicle frame, and in particular on lateral uprights, being interposed between the deck and the passenger compartment. The edges of the opening of the housing 18 are pressed against the windshield 19, a seal being provided between them during assembly of the rigid assembly. A dashboard can then be attached to the interior of the cabin to hide the rigid element and perfect the interior of the vehicle.

In the embodiment shown in FIG. 3, the housing 18 comprises a discharge opening 26 of the air flow 27 admitted into the interior volume of the housing.

This exhaust port 26 is placed downstream of the air passage 25 in the direction of flow of the airstream 24 conveyed by the channel 21. This exhaust port 26 is in aeraulic communication with the channel 21, so the air flow 27 admitted inside the housing 18 is driven towards the channel 21, after having circulated inside the housing 18.

In FIG. 4, the housing 18 includes an exhaust port 29 for the air admitted from the channel 21, which is in aeraulic communication with the outside of the passenger compartment. The air admitted inside the housing 18 is discharged to the engine compartment, through an opening which is formed in the deck of the vehicle and which is in aeraulic communication with the exhaust port 29, via a conduit for example. A particulate filter is preferably placed in the area of the exhaust port, to prevent any unwanted particles from entering the housing 18 from the engine compartment of the vehicle. The reinforcing beam 1 is equipped with various selective air distribution members 30, such as flaps with valves or the like, which are operable between at least one open position in which the air is channeled through the channel is assigned is allowed to be evacuated out of the reinforcing beam 1, and a closed position in which such air evacuation is prohibited. Maneuvering these flaps 30 is placed under the control of control means comprising temperature sensors 32 and the moisture content of the air contained inside the housing 18. In the case where the operation of the installation ventilation, heating and / or air conditioning is not required for ventilation of the passenger compartment, the control means cause the implementation of the installation and closure of the flaps 30, to allow routing of the flow 24 air inside the channel 21 dedicated to the ventilation of the housing 18, without inducing ventilation of the passenger compartment.

Claims (17)

Revendications1. Device for mounting a vehicle of a headlamp (16) comprising a housing (18) provided with a transparent closing wall, this mounting device implementing means for connecting the housing (18) to a structural element of the vehicle intended to be interposed between the engine compartment and the passenger compartment of the vehicle, characterized in that said structural element consists of a transverse reinforcing beam (1) of vehicle cabin, which houses at least one channel (21) of air circulation from a heat treatment unit of air that includes a facility (33) for ventilation, heating and / or air conditioning equipping the vehicle. 2. Device according to claim 1, characterized in that the connecting means associates mechanical fastening means (20) of the housing (18) on the reinforcing beam (1) and means for placing in communication aeraulic the internal volume of the housing (18) with said channel (21). 3. Device according to claim 2, characterized in that at least one light beam adapted to be emitted by said projector is generated by at least one optical module of the projector, said aeraulic communication setting means being arranged so that a part the flow of air flowing in said channel flows in the housing and in contact with the light source (s) of said optical module and / or with an element in thermal contact with said light source (s). 4. Device according to claim 3, characterized in that said light sources are light emitting diodes. 5. Device according to any one of the preceding claims, characterized in that said transparent closing wall is formed by an area of the windshield (19) fitted to the vehicle. 6. Device according to any one of the preceding claims, characterized in that said means for establishing aeraulic communication consist of at least one air passage (22) formed between the housing (18) and the reinforcement beam. (1) for conveying at least a fraction of air conveyed by the channel (21) to the interior of the housing (18). 7. Device according to claim 6, characterized in that the air passage (22) formed between the housing (18) and the reinforcing beam (1) is formed by an air outlet mouth and a mouth of air inlet which are respectively formed through the wall of the reinforcing beam (1) and the wall of the housing (18), and whose outlets are placed in juxtaposition one on the other. 8. Device according to any one of claims 6 or 7, characterized in that the channel (21) houses a deflector (23) to induce at least a partial diversion of the air flow (24) conveyed by the channel (21). ) through the air passage (22) between the housing (18) and the reinforcing beam (1). 9. Device according to any one of claims 6 to 8, characterized in that the air passage (22) formed between the housing (18) and the reinforcing beam (1) and / or the exhaust mouth (26, 29) is provided with a particulate filter (25). 10. Device according to any one of the preceding claims, characterized in that the housing (18) comprises a discharge port (26) of the intake air from the channel (21), said mouth being in aeraulic communication with any channel (21) of air flow accommodated in the reinforcing beam (1). 11. Device according to any one of claims 1 to 9, characterized in that the housing (18) comprises a vent (29) of the intake air from the channel (21), said mouth being in communication aeraulic with the outside of the cockpit. 12. Device according to any one of the preceding claims, characterized in that the channel (21) is a channel dedicated to the ventilation of the passenger compartment. 13. Device according to any one of the preceding claims, characterized in that the channel (21) is a channel further dedicated to defrosting and / or defogging the windshield (19) and / or side windows of the vehicle. 14. Projector (16) for a motor vehicle for attachment to a mounting device of this projector on a structural element of the vehicle according to any one of the preceding claims, comprising a housing (18) containing optical modules capable of generating at less a light beam, characterized in that it comprises mechanical fixing means (20) on a transverse reinforcement beam (1) of the passenger compartment of the vehicle that comprises a ventilation, heating and / or ventilation installation (33) air-conditioning equipment fitted to the vehicle, and means for placing the internal volume of a housing (18) of the projector (16) in communication with the air with any channel (21) housed inside said reinforcing beam (1). 15. Projector (16) according to claim 14, characterized in that it comprises an air inlet mouth (22) intended to be placed in aeraulic communication with an air outlet mouth (26) that comprises the reinforcing beam (1) and / or an exhaust air outlet (29) intended to be placed in air-traffic communication with the outside of the passenger compartment of the vehicle. 16. Projector (16) according to claim 15, characterized in that the air inlet mouth (22) and / or the air outlet mouth (26, 29) is / are provided with a particulate filter (25). 17. Projector (16) according to any one of claims 14 to 16, characterized in that the housing (18) of the projector (16) is integrated in a rigid assembly of the original equipment on the chassis of a motor vehicle, consisting of at least one said housing (18) and the reinforcing beam (1).