• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a projector unit (1) comprising a cooling circuit (2a, 2b) provided with at least two air circulation ducts (3a, 3b, 3c, 3d, 3e) connected to at least one device generating (4) an air flow, in particular a fan, and provided with at least one variation element (5a, 5b, 5c) of a proportion of the distributed air flow in each of said at least two ducts (3a, 3b, 3c, 3d, 3e).
    公开号:FR3063336A1
    申请号:FR1751518
    申请日:2017-02-24
    公开日:2018-08-31
    发明作者:Thibault Menn
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    (57) The invention relates to a spotlight unit (1) comprising a cooling circuit (2a, 2b) provided with at least two air circulation pipes (3a, 3b, 3c, 3d, 3e) connected to at least the same device for generating (4) an air flow, in particular a fan, and provided with at least one variation element (5a, 5b, 5c) of a proportion of the air flow distributed in each of the said at least two lines (3a, 3b, 3c, 3d, 3e).
    FR 3 063 336 - A1

    PROJECTOR BLOCK
    The present invention relates to a headlamp unit and a method of managing air circulation in this headlamp unit as well as to a system for implementing this method.
    The invention also relates to a vehicle, in particular a motor vehicle comprising such a management system.
    The invention also relates to a computer program comprising program code instructions for executing the steps of this method.
    Motor vehicle headlamps must be cooled, all the more so if they include several lighting modules, in order to avoid any malfunction which could lead to a reduction or even a total loss of the lighting function provided by them .
    To do this, with reference to FIG. 1, there are known in the state of the art projector blocks 100 comprising a housing 104 and a lens 105 defining an enclosure 106 in which are included a cooling circuit 101, a fan 102 and lighting modules 103a, 103b. In these projector blocks 100, the cooling circuit 101 connects the fan 102 to the lighting modules 103a, 103b of these blocks
    100. Such a fan 102 operates as soon as the vehicle engine is running and makes it possible to diffuse a constant flow of air towards these lighting modules 103a, 103b.
    However, one of the drawbacks of such projector units 100 is linked to the fact that the cooling of the lighting modules 103a, 103b is not optimized. Indeed, the diffusion of such a constant air flow by this fan 102 does not make it possible to adapt the cooling of the lighting modules 103a, 103b to changes in the outside temperatures to which the vehicle and therefore consequently the unit may be subjected. projector 100, nor to the operating conditions of the lighting modules 103a, 103b.
    In addition, such headlamps 100 are often subject to condensation phenomena which appear at their glass 105 and which are manifested by the appearance of droplets on an inner surface of this glass 105. This phenomenon appears in certain temperature conditions, in particular during a thermal shock induced by a large temperature difference between on one side the hot temperature coming from the engine (particularly for a headlight unit arranged at the front of the vehicle) and on the other side the temperature which can be low. Such condensation phenomena are often the cause of dysfunction of these headlamp units 100 resulting from degradations induced by the presence of a high level of humidity in the enclosure 106 of these blocks 100, linked to these phenomena. In addition, the appearance of these condensation phenomena at the ice level
    105 of the headlight unit 100 often generates a perception by the vehicle owner of a deterioration in the aesthetic appearance of this headlight unit 100 which inevitably leads to dissatisfaction with the latter followed by a return of this vehicle to service after -sale from the car manufacturer.
    The present invention aims to overcome these drawbacks related to the state of the art.
    One of the aims of the invention is to improve the cooling of headlamps comprising several lighting modules.
    Another object of the invention is to reduce, or even eliminate, the phenomena of condensation in the projector units.
    In this design, the invention relates to a spotlight unit comprising a cooling circuit provided with at least two air circulation pipes connected to at least one and the same device for generating an air flow, in particular a fan, and provided with at least one element for varying a proportion of the air flow distributed in each of said at least two pipes.
    In other embodiments:
    - Said at least one variation element is a movable wall arranged in a zone of junction of an air inlet pipe of said cooling circuit with said at least two air circulation pipes;
    - the projector unit includes a clean air circulation pipe connected to each lighting module;
    the projector unit comprises a window and at least one lighting module and in that it comprises an air circulation pipe whose end is connected to the window and at least one separate air circulation pipe of which the end is connected to at least one lighting module;
    - Said at least one device for generating an air flow is linked to an air inlet pipe of said cooling circuit.
    The invention also relates to a method of managing an air circulation in this headlight unit, comprising a step of varying the proportion of the air flow distributed in each of said at least two air circulation pipes of the circuit. of the headlight unit.
    Advantageously, the variation step comprises a substep for configuring the cooling circuit in a first mode of operation in which the entire air flow is guided towards a single lighting module or a window or in a second mode of operation in which the air flow is shared between at least two air circulation pipes.
    In particular, the configuration sub-step takes into account all or part of the following data:
    îo - the on or off state of each lighting module;
    - the temperature of at least one lighting module;
    - the temperature inside the projector and / or outside;
    - the humidity level measured in the external environment of the projector unit.
    The invention also relates to a system for managing an air circulation in such a projector unit implementing this method, the system comprising a control unit controlling at least one element for varying a proportion of the flow of air distributed in each of said at least two pipes of the cooling circuit of the headlight unit.
    Advantageously, the system comprises at least one device for generating an air flow, in particular a centrifugal fan, at least one temperature sensor, at least one temperature sensor and / or at least one humidity sensor measuring respectively the temperature and humidity present in the external environment of the projector unit and / or at least one temperature sensor included in an enclosure of the projector unit.
    In particular, the management system comprises at least one temperature sensor arranged in a lighting module of said projector unit.
    The invention also relates to a vehicle, in particular a motor vehicle, comprising at least one such headlight.
    The invention also relates to a computer program comprising 5 program code instructions for executing the steps of this method when said program is executed by a control unit of this management system.
    Other advantages and characteristics of the invention will appear better on reading the description of a preferred embodiment which will follow, with reference to the figures, produced by way of indicative and nonlimiting example:
    Figure 1 is a graphical representation of a projector unit comprising a cooling circuit of the prior art;
    - Figure 2 is a graphic representation of a headlamp unit comprising a first variant of a cooling circuit provided with a single variation element, according to the embodiment of the invention;
    Figure 3 is a graphical representation of the first variant of the cooling circuit configured in a first operating mode, according to the embodiment of the invention;
    Figures 4, 5 and 6 are graphic representations of the first variant of the cooling circuit configured in a second operating mode, according to the embodiment of the invention;
    Figure 7 is a graphical representation of the projector unit comprising a second variant of the cooling circuit configured in the first mode of operation and comprising two variation elements, according to the embodiment of the invention;
    Figure 8 is a graphical representation of the headlamp unit comprising the second variant of the cooling circuit configured in the second operating mode and comprising two variation elements, according to the embodiment of the invention;
    FIG. 9 is a graphical representation of a system for managing an air circulation in the projector unit, according to the embodiment of the invention, and
    - Figure 10 is a flow diagram relating to a method of managing an air circulation in the headlight unit, according to the embodiment of the invention
    In the following description, identical reference numerals designate identical parts or having similar functions.
    In Figures 2, 7 and 8, there is shown an embodiment of a projector unit 1 capable of emitting light radiation. This headlight unit 1 is preferably arranged in a vehicle, for example a maritime, air or land vehicle. It can alternatively be included in an interior or exterior lighting device of a building or even in a public lighting device.
    In the present embodiment, the vehicle in which this headlight unit 1 is arranged is preferably a motor vehicle. In this context, the headlight unit 1 is located at a rear or front part of the vehicle.
    Such a projector unit 1 essentially comprises a housing 8 defining an opening closed by a transparent glass 9 capable of being traversed by the light rays emitted by at least one lighting module 12a, 12b of this projector unit 1.
    The housing 8 and the glass 9 thus assembled together define an enclosure 11 of this projector unit 1 comprising each lighting module 12a, 12b. This headlight unit 1 preferably comprises two lighting modules 12a, 12b which may for example correspond to a high beam module and a low beam module. It will be understood that this headlamp unit 1 may additionally include other lighting modules such as a daytime running light module or even a position light module. This enclosure 11 can also comprise at least one temperature sensor 13 of the glass 9 preferably arranged at a distance from the lighting modules 12a, 12b.
    In this headlight unit 1, each lighting module 12a, 12b comprises a light source such as in particular an electric bulb, a halogen lamp, a xenon lamp, one or more light-emitting diodes or one or more laser diodes. The lighting module 12a, 12b can also include at least one temperature sensor 15.
    The headlight unit 1 also includes a cooling circuit 2a, 2b provided with at least two air circulation pipes 3a, 3b, 3c, 3d, 3e connected via an air inlet pipe 7 to at least one device 4 for generating an air flow. The air circulation pipes 3a, 3b, 3c, 3d, 3e can be connected to the same generation device
    4 of air flow or more than one of these devices 4. The inlet pipe 7 comprises an end provided with an inlet opening of the cooling circuit 2a, 2b through which the air enters the latter. As for said at least two air circulation pipes 3a, 3b, 3c, 3d, 3e, they each include one end provided with an outlet opening of the cooling circuit 2a, 2b allowing the air to be evacuated. circulating in this circuit 2a, 2b towards the lighting modules 12a, 12b and / or the lens 9 of the headlight unit 1.
    This projector unit 1 comprises two variants of the cooling circuit 2a, 2b. The difference between the first and the second variant lies in the presence of an air circulation pipe 3e in this second variant which is intended to conduct an air flow or a proportion of the latter towards the glass 9 of the block. projector 1.
    îo In the first variant visible in FIGS. 2 to 6, the cooling circuit 2a comprises the air inlet pipe 7 which is connected at the level of a junction zone 6 to two air circulation pipes 3a, 3b. In this configuration, the end of each of these air circulation pipes 3a, 3b is connected to the corresponding lighting module 12a, 12b of the headlight unit 1. It is understood here that this first variant of the cooling circuit 2a comprises preferably as many air circulation pipes 3a, 3b as the projector unit 1 advantageously comprises lighting modules 12a, 12b.
    In the second variant visible in FIGS. 7 and 8, the cooling circuit 2b also includes the air inlet pipe 7 which is connected at the level of a junction area 6 to three air circulation pipes 3c, 3d, 3rd. In this configuration, the ends of two 3c, 3d of these three air circulation pipes 3c, 3d are connected to the lighting modules 12a, 12b of the headlight unit 1, the end of the air circulation pipe 3e remaining remaining arranged in turn near the glass 9 of the projector unit 1. In particular, the outlet opening of this end of the air circulation pipe 3e is preferably positioned opposite said glass 9. In in addition, in addition to the remaining air circulation line 3e, this second variant of the cooling circuit 2b preferably comprises as many air circulation lines 3c, 3d as the headlight unit 1 comprises lighting modules 12a, 12b.
    This spotlight unit 1 also comprises at least one element for variation 5a, 5b, 5c of the proportion of the air flow distributed in each of said at least two pipes 3a to 3e of the first or of the second variant of the cooling circuit 2a, 2b. More specifically, the first variant of this cooling circuit 2a comprises a single variation element 5a and the second variant of this circuit 2b îo comprises two variation elements 5b, 5c.
    In these two variants of the cooling circuit 2a, 2b, each variation element 5a, 5b, 5c is a movable wall which is arranged in whole or in part in the junction zone 6 of the air inlet pipe 7 with said at least two air circulation lines 3a, 3b, 3c, 3d, 3e. This movable wall comprises a body which preferably extends rectilinearly between two ends 17 of this wall. This wall is mounted mobile in rotation in the first and second variants of the cooling circuit 2a, 2b. To do this, the first end 17 of this wall is fixed in these first and second variants of the cooling circuit 2a, 2b in a connection region 6b of two air circulation pipes 3a, 3b, 3c, 3d, 3e between them, said connecting region 6b being included in the junction zone 6. Thus the first end 17 defines an axis of rotation around which the movable wall is capable of being displaced. In other words, this axis of rotation is included in the connection region 6b of the two air circulation pipes 3a, 3b, 3c, 3d, 3e between them. It will be noted that the movable wall has a surface which is substantially greater than or equal to the surface of the section of each air circulation pipe 3a, 3b, 3c, 3d, 3e included in the two variants of cooling circuit 2a, 2b , in particular a circular surface insofar as these pipes 3a, 3b, 3c, 3d, 3e each have a circular cross section. It will be noted that this wall can be coupled to an actuating device of the electric motor type for carrying out its movement in the cooling circuit 2a, 2b.
    In the headlight unit 1, the device 4 for generating the air flow can be a fan, in particular an axial fan arranged in the air inlet pipe 7. This axial fan is capable of generating an air flow in the cooling circuit 2a, 2b by sucking the air entering through the inlet opening of the circuit 2a, 2b and by propelling it into the latter parallel to the axis of rotation of the fan. In other variants, this fan can be centrifugal or include any device having the capacity to blow air.
    With reference to FIG. 9, the invention also relates to a system 10 for managing the air circulation in the headlight unit 1. This management system 10 comprises a control unit 18 controlling at least one variation element 5a, 5b , 5c. It also includes said at least one temperature sensor 13, 15 arranged in the projector unit 1 and said at least one variation element 5a, 5b, 5c as well as said at least one device 4 for generating air flows. In addition, the system 10 can also include at least one temperature sensor 19 and at least one humidity sensor 14 measuring respectively the temperature and a humidity level present in the external environment of the projector unit, that is to say say in the external environment of the vehicle defined at the level of an external face of the lens 9 of this headlight unit 1.
    In this management system 10, the control unit 18 comprises hardware and software resources more precisely at least one processor cooperating with memory elements 20. The control unit 18 is able to execute instructions for the implementation of a computer program.
    Such a control unit 18 is connected to each:
    - temperature sensor 13, 15, 19;
    - humidity sensor 14;
    - variation element 5a, 5b, 5c, and
    - device 4 for generating the air flow.
    It will be noted that in this management system 10, the device 4 for generating the air flow can be as we have mentioned, included inside the headlight unit 1 while being located in the inlet pipe of air 7. It can, alternatively, be positioned outside of the latter by being connected to the inlet opening of the air inlet pipe 7. In the latter case, this generation device 4 can be a fan, in particular a centrifugal fan. Such a centrifugal fan is then able to generate a flow of air in the cooling circuit 2a, 2b by sucking the air parallel to the axis of rotation of the fan and by propelling it by centrifugal force perpendicular to this same axis.
    With reference to FIG. 10, such a management system 10 is capable of implementing a method for managing the air circulation in the headlight unit 1.
    This method comprises a step of starting 22 of said at least one device 4 for generating air flows. This step 22 is preferably carried out by the control unit 18 as soon as the latter detects a start of the vehicle engine. Alternatively, such a step 22 can provide conditions for initiating this start-up of the device 4 for generating air flows which are linked for example to the detection of a heating of one of the lighting modules. 12a, 12b of the headlamp unit 1 or even on the detection of a condensation phenomenon 32 appearing at the level of the glass 9 of the headlamp unit 1 when the latter comprises the second variant of the cooling circuit 2b.
    The method then provides for a step 23 of varying a proportion of the air flow distributed in each of said at least two pipes 3a to 3e of the cooling circuit 2a, 2b of the headlight unit 1.
    Such a step 23 comprises a sub-step of configuration 24 of the cooling circuit 2a, 2b in a first operating mode. The first operating mode provides for an orientation of all the air flow generated by the air flow generation device 4 in one or the other of said at least two air circulation pipes 3a, 3b, 3c , 3d, 3rd. In other words, in this first mode of operation, the proportion of flow distributed in one or the other of these said at least two pipes can be zero. Thus in the first and second variants of the cooling circuit 2a, 2b, the entire air flow is then directed towards one or the other of the lighting modules 12a, 12b connected to the ends of two circulation pipes of air 3a, 3b, 3c, 3d. This first operating mode is for example illustrated in FIG. 3 when the headlight unit 1 comprises the first variant of the cooling circuit 2a. In addition, in the second variant 2b and with reference to FIG. 7, all of this air flow can be directed towards the lens 9 of the headlight unit 1.
    This sub-step 24 may include a phase 25 of detection of a heating of one of the lighting modules 12a, 12b of the headlamp unit 1 connected to one of said at least two air circulation pipes 3a, 3b, 3c, 3d. During this phase 25, temperatures T1, T2 of the lighting modules 12a, 12b of the headlight unit 1 are measured from the temperature sensors 15 included in these lighting modules 12a, 12b. Thereafter, each of these temperatures T1, T2 is transmitted to the control unit 18 so as to be compared with a threshold temperature Ts included in the memory elements 20 of this control unit 18.
    If one of these temperatures T1, T2 is higher than the threshold temperature Ts, then the corresponding lighting module 12a, 12b has an abnormal and / or detrimental increase in its temperature and the configuration sub-step 24 then provides under these conditions carrying out a piloting phase 26 of at least one variation element 5a, 5b, 5c io of the headlight unit 1, so as to induce the cooling of the lighting module concerned.
    During this piloting phase 26, the control unit 18 then controls said at least one variation element 5a, 5b, 5c in order to direct all of the air flow towards the lighting module 12a, 12b exhibiting this heating. In the case of the first variant of the cooling circuit 2a, the variation element 5a is controlled so as to be in a position for closing the air circulation pipe 3a, 3b connected to the lighting module 12a, 12b which does not show any overheating. In the case of the second variant of this circuit 2b, the two variation elements 5b, 5c are controlled by the control unit 18 so as to be in the closed positions of the air circulation pipe 3e capable of conduct the air flow at the level of the glass 9 of the headlight unit 1 as well as of the air circulation duct 3c, 3d connected to the lighting module
    12a, 12b not exhibiting overheating.
    When the headlight unit 1 comprises the second variant of the cooling circuit 2b, this sub-step 24 may also include, in addition to the previous detection phase 25, a detection phase 27 of a condensation phenomenon 32 appearing at the level of the lens 9 of the headlamp unit 1. During this phase 27, the control unit 18 determines a temperature Tg of the lens 9 of the headlamp unit 1 and then compares it to a threshold temperature Tr. This threshold temperature Tr is a dew temperature also called “dew point” which is determined before carrying out the detection phase 27 or also during the course of this phase 27. This threshold temperature Tr can be determined by the control unit 18 from temperatures and rates of humidity measured in the external environment of the headlamp unit 1 and of the implementation of equations well known from the state of the art for determining the temperature of r daring as Heinrich Gustav Magnus-Tetens' equation. Insofar as the temperature Tg of the glass 9 is lower than this threshold temperature Tr, then a condensation phenomenon 32 is present at the level of this glass 9 of the headlight unit 1.
    In this context, the configuration sub-step 24 then provides, following this detection phase 27, for carrying out a piloting phase 28 of the variation elements 5b, 5c of the headlight unit 1. During this piloting phase 28, the control unit 18 then controls the two variation elements 5b, 5c in order to direct all the air flow towards the glass 9 of the headlamp unit 1. Thus with reference to FIG. 8, the two variation elements 5b , 5c are controlled by the control unit 18 so as to be in the closed positions of the air circulation pipes 3c, 3d connected to the lighting modules 12a, 12b.
    In addition or as an alternative to a temperature measurement, the configuration sub-step 24 can take into account the state of a lighting module (on or off), to provide cooling only when it is on.
    Thereafter, the variation step 23 comprises a substep of configuration 29 of the cooling circuit 2 in a second mode of operation. This second operating mode provides for a diffusion of the air flow generated by the air flow generation device 4 in said at least two air circulation pipes 3a, 3b, 3c, 3d, 3e and this, according to a non-zero variable proportion of this flow distributed in each of these at least two air circulation pipes 3a, 3b, 3c, 3d, 3e.
    This sub-step 29 comprises, when the headlamp unit 1 is provided with the first variant of the cooling circuit 2a, a phase of piloting the variation element 5a as a function of the temperatures T1,
    T2 relating to the lighting modules 12a, 12b of the headlamp unit 1. During this phase 30, the variation element 5a is controlled by the control unit 18 as a function of the temperatures T1, T2 of the lighting modules 12a, 12b. These temperatures T1, T2 of the lighting modules 12a, 12b are measured and transmitted periodically to the control unit 18 which, for example from mapping data 21, determines the position of each variation element 5a in the circuit of cooling 2a. These cartographic data 21, which are archived in the memory elements 20 of the control unit 18 and come for example from empirical data, define different positions of the variation element 5a as a function of the temperatures T1, T2 measured from the lighting modules 12a, 12b of the headlamp unit 1. Thus, as a function of these temperatures T1, T2, the variation element 5a can then be configured in different positions by distributing a substantially equal proportion of the air flow in each of the air circulation pipes 3a, 3b, as illustrated in FIG. 4, or alternatively by distributing a greater proportion of air towards one of these two pipes 3a, 3b, as shown in FIGS. 5 and 6.
    When the headlight unit 1 is provided with the second variant of the cooling circuit 2b, the configuration sub-step 29 comprises a piloting phase 31 of at least one variation element 5b, 5c as a function of the temperatures T1, T2 relating to the lighting modules 12a, 12b of the projector unit 1 and of the detection of a condensation phenomenon 32 appearing at the level of the glass 9 of the projector unit
    1. During this phase 31, at least one variation element 5b, 5c is controlled by the control unit 18 as a function of the temperatures T1, T2 of the lighting modules 12a, 12b and of the detection of the appearance of the condensation phenomenon 32. The temperatures T1, T2 of the lighting modules 12a, 12b are measured and transmitted periodically to the control unit 18. The parameters making it possible to detect the appearance of the condensation phenomenon 32 in this projector unit 1 are also determined and transmitted periodically to this control unit 18. These determined parameters may include, as we have seen previously, estimated temperatures of the glass 9 of the headlamp unit 1 and / or measured temperatures and humidity levels in the external environment of the headlamp unit 1. The control unit 18, from the temperatures T1, T2 measured, and from the result of the comparison of the temperature Tg of the ice with respect to the threshold temperature Tr as well as of don born of mapping 21, then determines the position of each variation element 5b, 5c in the cooling circuit 2b. Thus, the variation element 5b, 5c can then be configured in different positions by distributing a substantially equal proportion of the air flow in each of the air circulation pipes 3c to 3e or in two air circulation pipes 3c , 3d as illustrated in Figure 7 or by distributing a higher proportion of air to one of these three pipes 3c to 3e.
    The invention also relates to a computer program comprising program code instructions for the execution of steps 22,
    23 of this method when said program is executed by the control unit 18 of the management system 10.
    Thus, the invention makes it possible to improve the cooling of the headlight unit 1 by distributing a proportion of the air flow generated by the device 4 for generating air flows in each air circulation pipe 3a to
    3rd of the cooling circuit 2a, 2b. This proportion is defined according to the position of said at least one variation element 5a, 5b, 5c and is determined precisely as a function of needs required by components of the spotlight unit 1 such as the lighting modules 12a, 12b and the glass. 9 of this block capable of receiving this proportion of the air flow. These needs correspond to a need to cool the lighting modules 12a, 12b and / or to reduce or even eliminate the phenomenon of condensation 32. A projector provided with such a cooling circuit according to the invention thus makes it possible to implement a intelligent cooling management, allowing compromises to be made to optimize cooling efficiency from a single cooling source, for example a single fan. In particular, the management system can best deal with all extreme situations. For example, in a first situation where no lighting module is used and for which there is no condensation phenomenon, the air flow generation device 4 can be stopped: this makes it possible to reduce consumption energy while increasing the lifespan of the generation 4 air flow device. In a second situation in which all the modules are used and possibly for which there is a condensation phenomenon, the management system can share the cooling between the different components in a precise proportion adapted to the needs of each component, or even can carry out arbitrations to maintain an acceptable security situation.
    In addition, the invention has the advantage of being of minimal bulk and of a low cost of implementation.
    Naturally, the invention is not limited to the embodiments described. It is suitable for any situation where several components of the same projector need to be cooled. The elements of the device can take any other form without departing from the scope of the invention. In particular, the variation elements can take any shape and / or be positioned in any other location of the pipes.
    权利要求:
    Claims (13)
    [1" id="c-fr-0001]
    1. Projector unit (1), characterized in that it comprises a cooling circuit (2a, 2b) provided with at least two air circulation pipes (3a, 3b, 3c, 3d, 3e) connected to the at least one same device for generating (4) an air flow, in particular a fan, and provided with at least one variation element (5a, 5b, 5c) of a proportion of the air flow distributed in each said at least two lines (3a, 3b, 3c, 3d, 3e).
    [2" id="c-fr-0002]
    2. Projector unit (1) according to the preceding claim, characterized in that said at least one variation element (5a, 5b, 5c) is a movable wall arranged in a junction zone (6) of an inlet pipe. (7) of air from said cooling circuit (2a, 2b) with said at least two air circulation pipes (3a, 3b, 3c, 3d, 3e).
    [3" id="c-fr-0003]
    3. Projector unit (1) according to any one of the preceding claims, characterized in that it comprises a clean air circulation pipe (3a, 3b) connected to each lighting module (12a, 12b).
    [4" id="c-fr-0004]
    4. Projector unit (1) according to any one of claims 1 and 2, characterized in that it comprises a lens (9) and at least one lighting module (12a, 12b) and in that it comprises an air circulation pipe (3e) the end of which is connected to the glass (9) and at least one separate air circulation pipe (3c, 3d) the end of which is connected to at least one module d lighting (12a, 12b).
    [5" id="c-fr-0005]
    5. Projector unit (1) according to any one of the preceding claims, characterized in that said at least one device for generating (4) an air flow is linked to an air inlet pipe (7 ) of said cooling circuit (2a, 2b).
    [6" id="c-fr-0006]
    6. Method for managing an air circulation in a headlight unit (1) according to any one of the preceding claims,
    5 characterized in that it comprises a step of varying (23) the proportion of the air flow distributed in each of said at least two air circulation pipes (3a, 3b, 3c, 3d, 3e) of the cooling (2a, 2b) of the headlight unit (1).
    îo
    [7" id="c-fr-0007]
    7. Method according to the preceding claim, characterized in that the variation step (23) comprises a configuration sub-step (24) of the cooling circuit (2a, 2b) in a first operating mode in which the entire flow air is guided to a single lighting module (12a, 12b) or a window (9) or in a
    15 second operating mode in which the air flow is shared between at least two air circulation pipes (3a, 3b, 3c, 3d, 3e).
    [8" id="c-fr-0008]
    8. Method according to one of claims 6 or 7, characterized in that the configuration sub-step (24) takes into account all or
    20 part of the following data:
    - the on or off state of each lighting module (12a, 12b);
    - the temperature of at least one lighting module (12a, 12b);
    - the temperature inside the projector and / or outside;
    25 - the humidity level measured in the external environment of the projector unit (1).
    [9" id="c-fr-0009]
    9. Management system (10) for air circulation in a headlamp unit (1) according to any one of claims 1 to 5 putting in place
    30 implements the method according to any one of claims 6 to 8, comprising a control unit (18) controlling at least one variation element (5a, 5b, 5c) of a proportion of the air flow distributed in each of said at least two lines (3a, 3b, 3c, 3d, 3e) of the cooling circuit (2a, 2b) of the headlight unit (1).
    [10" id="c-fr-0010]
    10. Management system (10) according to the preceding claim, characterized in that it comprises at least one device for generating (4) an air flow, in particular a centrifugal fan, at least one temperature sensor (15 ), at least one temperature sensor (19) and / or at least one humidity sensor (14) measuring respectively the temperature and the humidity present in the external environment of the projector unit (1) and / or at least one temperature sensor (13) included in an enclosure (
    [11" id="c-fr-0011]
    11) of the headlight unit (1).
    15 11. Management system (10) according to any one of claims 9 and 10, characterized in that it comprises at least one temperature sensor (15) arranged in a lighting module (
    [12" id="c-fr-0012]
    12a, 12b) of said headlight unit (1).
    20 12. Vehicle, in particular motor vehicle, characterized in that it comprises at least one headlight (1) according to any one of claims 1 to 5.
    [13" id="c-fr-0013]
    13. Computer program including instructions for
    25 program code for the execution of the steps of the method according to any one of claims 6 to 8 when said program is executed by a control unit (18) of a management system (10) according to any one of claims 9 to 11.
    1/3 1 FIGURE 1 (PRIOR ART)
    13 FIGURE 2
    2/3
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    EP3346184A1|2018-07-11|Improved light emission module for a motor vehicle
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    FR3083180A1|2020-01-03|METHOD FOR CONTROLLING A PROJECTOR AIR EXTRACTOR FOR A MOTOR VEHICLE.
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    EP2927568A1|2015-10-07|Long-range lighting system for motor vehicle
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    同族专利:
    公开号 | 公开日
    WO2018153552A1|2018-08-30|
    CN110325790A|2019-10-11|
    FR3063336B1|2019-04-05|
    EP3586058A1|2020-01-01|
    US20200003390A1|2020-01-02|
    US11022270B2|2021-06-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE102007043961A1|2007-09-14|2009-03-19|Automotive Lighting Reutlingen Gmbh|Illuminating device, has closed air passage provided with essentially horizontal extension, and conveying unit actively conveying air through air passage, and heat sink partially arranged in air stream that flows through air passage|
    DE102014110605A1|2014-07-28|2016-01-28|Hella Kgaa Hueck & Co.|Cooling air duct for cooling a light source in a movable light module|
    US20160208997A1|2015-01-19|2016-07-21|Osram Sylvania Inc.|Vehicle Headlamp Regulated Airflow System and Method|
    JP4945799B2|2007-11-21|2012-06-06|Ｎｅｃディスプレイソリューションズ株式会社|Light source cooling device, projection display device including the same, and light source cooling method|
    DE102008062827B4|2008-12-23|2014-06-26|Automotive Lighting Reutlingen Gmbh|Headlight for a motor vehicle|
    FR3012080B1|2013-10-21|2018-07-13|Valeo Systemes Thermiques|HEATING, VENTILATION AND / OR AIR CONDITIONING INSTALLATION FOR A MOTOR VEHICLE HABITACLE|
    KR20160139777A|2015-05-28|2016-12-07|엘지이노텍 주식회사|Lamp for vehicle|DE102016124763A1|2016-12-19|2018-06-21|HELLA GmbH & Co. KGaA|Lighting device for vehicles|
    WO2021230758A1|2020-05-13|2021-11-18|Llerena Lazo Jose Felix Rogelio|Device for preventing dew formation in vehicle headlights|
    CN112393201A|2020-11-23|2021-02-23|杨俊�|Automobile headlamp with antifogging function|
    法律状态:
    2018-02-26| PLFP| Fee payment|Year of fee payment: 2 |
    2018-08-31| PLSC| Search report ready|Effective date: 20180831 |
    2020-02-28| PLFP| Fee payment|Year of fee payment: 4 |
    2021-02-26| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1751518|2017-02-24|
    FR1751518A|FR3063336B1|2017-02-24|2017-02-24|PROJECTOR BLOCK|FR1751518A| FR3063336B1|2017-02-24|2017-02-24|PROJECTOR BLOCK|
    CN201880013785.2A| CN110325790A|2017-02-24|2018-02-23|Illuminating lamp unit|
    EP18725104.6A| EP3586058A1|2017-02-24|2018-02-23|Projector unit|
    PCT/EP2018/025044| WO2018153552A1|2017-02-24|2018-02-23|Projector unit|
    US16/482,929| US11022270B2|2017-02-24|2018-02-23|Headlight unit|
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