INTERIOR LIGHTING MODULE FOR MOTOR VEHICLES

Description

Technical field

[0001] The present invention lies in the field of the automotive industry, and more particularly relates to interior lighting modules for motor vehicles in order to illuminate all or part of a motor vehicle interior. State of the prior art

[0002] As is known, a motor vehicle interior is equipped with interior lighting modules to enable users of said motor vehicle to illuminate all or part of the interior, depending on their needs. These lighting modules thus contribute to the well-being of users and improve their comfort. Documents DE 10 2015 114 861 A1 and WO 2008 / 044460 A1 disclose an interior lighting module for a motor vehicle.

[0003] There are several types of lighting modules that can generate varied light beams in order to perform several lighting functions. For example, when a vehicle is stationary, it may be beneficial to uniformly illuminate the interior passenger compartment to allow users to easily see the interior of the motor vehicle. On the other hand, in a driving situation, for example, it may be desired not to illuminate a driver's compartment of the motor vehicle while the other passengers might wish for partial lighting depending on their needs. Thus, very specific lighting, with very low spatial dispersion of the light beam, may be sought in order to provide a point of light over a small area: this is the case, for example, of reading lights that can generate a very narrow light beam that allows a user to read without illuminating the rest of the passenger compartment and without disturbing the driver.

[0004] To meet these multiple lighting needs, it is known to integrate into the ceiling light of the passenger compartment of the motor vehicle numerous light sources and / or several lighting modules each fulfilling a well-defined lighting function. For example, a ceiling light is often equipped with at least one reading light for the passenger located next to the driver, as well as at least one lighting point to illuminate the passenger compartment more generally.

[0005] A known disadvantage is linked to the size of the ceiling light: the multiplicity of light sources and / or lighting modules, combined with the limited space available in the ceiling light for their integration, does not always allow the numerous lighting needs of the passenger compartment to be properly met, or at the cost of an expensive design.

[0006] The object of the present invention is to address at least a large part of the preceding problems and to further lead to other advantages by proposing a new interior lighting module for a motor vehicle.

[0007] Another aim of the present invention is to facilitate the integration of such a lighting module into a motor vehicle interior ceiling light.

[0008] Another object of the present invention is to reduce the manufacturing costs of such a lighting module.

[0009] Another aim of the present invention is to reduce the costs of integrating such a lighting module into the interior ceiling light of a motor vehicle. Statement of the invention

[0010] According to a first aspect of the invention, at least one of the aforementioned objectives is achieved with an interior lighting module for a motor vehicle, said module comprising the characteristics of claim 1.

[0011] The lighting module according to the invention thus comprises at least two light sources, each light source being associated with an optical guide making it possible to generate a particular light function. Thus, the lighting module according to the first aspect of the invention makes it possible to generate at least two different light functions. Il This results in easier integration into the passenger compartment of the motor vehicle, and more particularly into the ceiling light. Indeed, since the light sources are all located on the same flat substrate, the collaboration of the substrate of the lighting module in accordance with the first aspect of the invention with the main substrate of the passenger compartment is facilitated: it is much simpler to establish the electrical connections between the lighting module and the passenger compartment.

[0012] By substrate is meant a support intended to receive the light sources and in particular to establish an electrical connection between the light sources and an electrical circuit of the passenger compartment of the motor vehicle. Generally speaking, the substrate comprises a material intended to receive the printing of an electronic circuit, and / or different components constituting such an electronic circuit. By way of non-limiting example, the substrate can advantageously form an electronic card, such as for example a printed circuit, or PCB (English acronym known for « Printed Circuit Board "). Additionally, the substrate of the lighting module according to the first aspect of the invention also serves as a mechanical reference on which the different elements of said lighting module are referenced - directly or indirectly - in order to enable them to collaborate together and generate the corresponding light beams.

[0013] Generally speaking, the support of the lighting module according to the first aspect of the invention is intended to collaborate with the electrical circuit of the passenger compartment of the motor vehicle, and more particularly with the electrical circuit of a ceiling light of said passenger compartment. The substrate of the lighting module is separate from the electrical circuit of the passenger compartment, in order to facilitate the electrical and mechanical integration of said lighting module in the passenger compartment.

[0014] According to the first aspect of the invention, the substrate is planar. The substrate comprises at least one planar surface forming an elongation plane of said substrate. In the remainder of the description, the "planar" property of the substrate designates the at least one planar surface of said substrate. According to the invention, the planar surface of the substrate is formed by a first face located opposite the optical guides of the lighting module. Alternatively, the planar surface of the substrate may be formed by a second face located opposite the optical guides of the lighting module relative to said substrate. In a general, but non-limiting manner, the first face and the second face of the substrate are at least partly parallel to each other, the substrate being able to form, for example, an electronic card, as described above.

[0015] Each light source associated with an optical guide makes it possible to generate a particular light function. Depending on the requirements, each light source associated with its optical guide makes it possible to generate a light function different from all the others, or identical to at least part of the light functions generated by the other light sources associated with their optical guides. The light function reflects the destination of the corresponding light beam. By way of non-limiting examples, the light functions may be: to illuminate the passenger compartment ceiling light in a diffuse manner, to illuminate the passenger compartment in a homogeneous manner, to illuminate an ashtray punctually, to illuminate at least part of a dashboard of the motor vehicle, to illuminate at least part of a central console of the passenger compartment, to illuminate at least one of the seats of the passenger compartment, etc.

[0016] The light function is thus attached to particular characteristics of the light beam. Depending on the desired light functions, the following characteristics of the light beam can be adapted in isolation or in combination: opening angle, orientation, light intensity, color. An object of the invention in accordance with its first aspect is thus to define a light module comprising at least two light sources each associated with an optical guide in order to generate at least two light beams having different characteristics in order to produce at least two different light functions.

[0017] Each optical guide is defined by an optical axis that extends in a different direction from the optical axis of the other optical guides. The optical axis is defined here as an axis of symmetry or a median axis of the optical guide. By extension, the optical axis of the guide advantageously coincides with the optical axis of the generated light beam. By "median axis", we define, for example, a barycentric axis of the light rays having passed through one of the optical guides of the lighting module and thus forming one of the light beams. In other words, the median axis corresponds to the majority propagation direction of the light beam considered.

[0018] The lighting module in accordance with the first aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination: at least part of the optical guides is advantageously made of a plastic material and / or glass. Polycarbonate (PC), polypropylene carbonate (PPC) or polymethyl methacrylate (PMMA) will preferably be used. Advantageously, the optical guides are obtained by molding; each optical guide is distinct from the other optical guides. In other words, each optical guide is delimited by walls which are distinct from the other walls delimiting the other optical guides; each light source is optically coupled to one end of one of the optical guides. This advantageous configuration makes it possible to inject at least part of the light rays generated by the light source into the corresponding optical guide; each optical guide comprises a guide section and a projection section.The guide section is used to route the light rays generated by the corresponding light source to the projection section in which they will be shaped in order to form the corresponding light beam. Inside the guide section, the light rays are routed by internal reflections; the guide section is located between the projection section and the corresponding light source; According to a first embodiment variant, the guide section is rectilinear. Thus, the guide section projects from the substrate of the lighting module. The guide section may extend perpendicularly to the substrate and / or inclined. According to a particular embodiment, the guide section of each optical guide extends in parallel. Optionally, the guide sections of optical guides extend in different directions.Advantageously, the guide section of at least a portion of the optical guides extends directly above the substrate. According to a second embodiment variant, the guide section comprises at least one bent portion in order to take into account the constraints of integrating the lighting module into the passenger compartment of the motor vehicle in which it is intended to be integrated.The bent parts of the optical guides can of course be oriented in similar or different directions, in order to define a similar or respectively different orientation of the optical axes of each projection section, thus making it possible to orient the light beams generated in different directions and according to different orientations; the projection section is parabolic or hyperbolic, an opening angle of the projection section making it possible to define an opening angle of the corresponding light beam; advantageously, the guide section and the projection section are made in one piece.Alternatively, the guide section and the projection section can be optically connected and coupled to each other; the at least two optical guides comprise a first optical guide for generating a first light beam at a first opening angle and along a first optical axis, and a second optical guide for generating a second light beam at a second opening angle and along a second optical axis; the first opening angle is smaller than the second opening angle. This advantageous configuration thus makes it possible to generate a first light beam whose spatial extent is narrower than the spatial extent of the second light beam, each light beam thus performing a different light function; the first light beam at least partially covers the second light beam.This advantageous configuration makes it possible to cause at least part of the light rays generated by the first light source to intersect with at least part of the light rays generated by the second light source. To do this, the orientation of the optical axis of each optical guide and / or the opening angle of each optical guide is configured so as to be oriented substantially in the direction of the other optical guide; according to a first alternative, the lighting module according to the first aspect of the invention comprises at least one optical window located at a distal end of the optical guides relative to the substrate. This advantageous configuration makes it possible to protect the distal ends of each optical guide using at least one corresponding optical window.According to a first variant, the distal end of each optical guide is closed by a separate optical window; according to a second variant, an optical window covers the distal ends of several optical guides. The at least one optical window is advantageously made of a transparent material, such as for example a plastic and / or glass material. Polycarbonate (PC), polypropylene carbonate (PPC) or polymethyl methacrylate (PMMA) will preferably be used. Advantageously, the at least one optical window is integral with the optical guides.Alternatively, the at least one optical window is attached and fixedly attached to at least a portion of the optical guides; according to a second alternative, the lighting module according to the first aspect of the invention comprises a single optical window located at a distal end of the optical guides relative to the substrate, said optical window covering the first and second optical guides. This advantageous configuration makes it possible to protect the distal ends of each optical guide using the optical window. The optical window is advantageously made of a transparent material, such as for example a plastic and / or glass material. Polycarbonate (PC), polypropylene carbonate (PPC) or polymethyl methacrylate (PMMA) will preferably be used. Advantageously, the optical window is integral with the optical guides.Alternatively, the optical window is attached and fixedly attached to the optical guides; generally, the lighting module comprises an optical window located at a distal end of the at least two optical guides relative to the substrate, said optical window covering at least the two optical guides; the optical window is parallel to the substrate; alternatively, the optical window extends along a plane intersecting with an elongation plane of the substrate. the plane as described previously, the elongation plane of the substrate corresponds to the flat surface of the substrate, said flat surface being able to be formed by the face of the substrate facing the optical guides or the face opposite the optical guides relative to the substrate.The optical window may be flat or curved in order to adapt to the geometry of the passenger compartment of the motor vehicle with which the lighting module is intended to collaborate; the light sources are advantageously controllable selectively or collectively. Advantageously, each light source is of the light-emitting diode type. By way of non-limiting example, the light sources may be: o of the axial emission diode type, making it possible to generate light rays in a main direction substantially perpendicular to the plane of the support supporting them; and / or o of the lateral emission diode type, making it possible to generate light rays in a direction parallel to the plane of the support supporting them; and / or o of the through emission diode type, making it possible to generate light rays through the support supporting them.

[0019] According to a second aspect of the invention, there is provided a motor vehicle interior, said interior comprising at least one interior lighting module in accordance with the first aspect of the invention or according to any of its improvements, said lighting module being integrated into a ceiling light of said interior.

[0020] The compact configuration of the lighting module thus facilitates its integration into the passenger compartment ceiling light. In particular, the characteristic whereby all the light sources are located on the same flat support makes it easier to establish electrical connections with the ceiling light's electrical circuit.

[0021] The passenger compartment in accordance with the second aspect of the invention may advantageously comprise at least one of the improvements below, the technical characteristics forming these improvements being able to be taken alone or in combination: the first optical axis of the first optical guide of the module is oriented at a seat of said passenger compartment, and the second optical axis of the second optical guide is oriented towards a central console of said passenger compartment; the first optical guide is arranged to generate a first light beam with an opening angle less than an opening angle of a second light beam generated by the second optical guide; the lighting module is arranged on a central part of the ceiling light of the passenger compartment. Alternatively, the lighting module is arranged on one side of the ceiling light of the passenger compartment. According to an advantageous embodiment, the passenger compartment comprises a first and a second interior lighting module, the first lighting module being located on a first side of the passenger compartment of the motor vehicle and the second lighting module being located on a second side of the passenger compartment, preferably symmetrically with respect to a median axis of said passenger compartment.The median axis is preferably an axis which extends from the rear of the motor vehicle towards the front; the substrate of each module is electrically and / or mechanically coupled to an electrical circuit of the ceiling light and secured to said electrical circuit, for example by soldering and / or by a mechanical coupling independent of the type of fixing screw or by engagement of complementary shapes with the electrical circuit for example.

[0022] Various embodiments of the invention are provided, incorporating, in all their possible combinations, the various optional features set out herein. Description of figures

[0023] Other characteristics and advantages of the invention will become apparent from the following description on the one hand, and from several examples of embodiment given for informational and non-limiting purposes with reference to the attached schematic drawings on the other hand, in which: there FIGURE 1 illustrates a first example of embodiment of a lighting module in accordance with the first aspect of the invention; the FIGURE 2 illustrates a second exemplary embodiment of a lighting module in accordance with the first aspect of the invention; FIGURE 3 illustrates a partial view of an interior passenger compartment ceiling light incorporating two lighting modules in accordance with the first aspect of the invention; the FIGURE 4 illustrates a partial view of a motor vehicle interior according to the second aspect of the invention.

[0024] Of course, the features, variants and different embodiments of the invention may be combined with each other, in various combinations, provided that they are not incompatible or mutually exclusive. In particular, variants of the invention may be imagined comprising only a selection of features described below in isolation from the other features described, if this selection of features is sufficient to confer a technical advantage or to differentiate the invention from the prior art.

[0025] In particular, all the variants and embodiments described can be combined with each other if there is no technical obstacle to this combination.

[0026] In the figures, elements common to several figures retain the same reference. Description détaillée de l'invention

[0027] In reference to the FIGURES 1 et 2 , an interior lighting module 100 for a motor vehicle comprises: two light sources 110a, 110b arranged to emit light rays when they are selectively or collectively polarized by a control module not shown. As described previously, the lighting module 100 may optionally comprise more than two light sources 110a, 110b; two optical guides 130a, 130b, each optical guide 130a, 130b being associated with one of the light sources 110a, 110b in order to shape the light rays generated by said light source 110a, 110b and to generate a light beam according to one of the light functions described previously. In addition, each optical guide 130a, 130b extends along an optical axis oriented in a direction different from that of the other optical guides 130a, 130b; a single substrate 120 for securing the light sources 110a, 110b, said substrate 120 being flat in order to facilitate the integration of the lighting module 100 into the passenger compartment of the motor vehicle.In the example shown on the . FIGURE 1 , the substrate 120 is rectangular in shape and extends on either side of the light sources 110a, 110b. Of course, the substrate 120 can take any shape in order to meet the space requirements in the passenger compartment, and more particularly in the ceiling light in which the lighting module 100 is intended to be mounted. The substrate 120 is delimited by a first flat surface 121 located opposite the optical guides 130a, 130b of the lighting module 100 and a second flat surface 122 located opposite the optical guides of said lighting module 100 relative to the first flat surface 121. According to the invention, the substrate 120 of the lighting module 100 is intended to collaborate with an electrical circuit 400 of the passenger compartment of the motor vehicle, and more particularly the ceiling light.This collaboration is achieved by electrical communication of a portion of the electrical tracks of the electrical circuit 400 of the passenger compartment with the substrate 120 and / or by mechanical coupling between the substrate 120 and the electrical circuit 400 of said passenger compartment.

[0028] Each light source 110a, 110b is optically coupled to one end of the optical guide 130a, 130b with which it collaborates. In order to facilitate the optical coupling of the light source 110a, 110b with the optical guide 130a, 130b, the light source 110a, 110b is advantageously fixed against a facing face of the optical guide 130a, 130b located at the end of the optical guide 130a, 130b located on the side of the substrate 120. Alternatively, the optical coupling of at least a portion of the light sources 110a, 110b can be improved by the use of an optical device for directing the light rays generated by the light source 110a, 110b in the optical guide 130a, 130b, such as a collimator for example.

[0029] The light sources 110a, 110b may be of any type; preferably, the light sources 110a, 110b are of the type of at least one light-emitting diode emitting light rays of which at least a portion has a wavelength between 300 nm and 800 nm.

[0030] Each light source 110a, 110b is electrically coupled with the substrate 120 so that it can be polarized to generate the corresponding light rays. The electrical coupling of the light sources 110a, 110b with the substrate 120 can be achieved for example by soldering.

[0031] The substrate preferably comprises an electronic card and / or a printed circuit making it possible to control each light source 110a, 110b selectively or collectively. The control of the light sources 110a, 110b and / or the lighting module 100 is provided by a control module not shown.

[0032] Each optical guide 130a, 130b is arranged to shape the light rays generated by the light source 110a, 110b to which it is coupled, so as to form a shaped light beam in order to produce a predetermined light function. The light beam - and therefore the corresponding light function - are determined in particular by the type of light source 110a, 110b used, and / or a light power generated by said light source 110a, 110b, and / or a wavelength of the light rays generated, and / or a light beam shape and / or an orientation of the light beam and / or an opening angle of said light beam.

[0033] The optical guides 130a, 130b are made of a material transparent to the wavelengths of the light rays emitted by the light sources 110a, 110b, such as for example glass or a plastic material. Advantageously, each optical guide 130a, 130b is made by molding. Optionally, all the optical guides 130a, 130b of the lighting module 100 are made in one piece, for example following a single molding process. Alternatively, each optical guide 130a, 130b can form a part independent of the other optical guides 130a, 130b.

[0034] In the example illustrated on the FIGURE 1 , each optical guide 130a, 130b comprises an axis of symmetry forming an optical axis of the optical guide 130a, 130b and of the shaped light beam. The optical axis of each optical guide 130a, 130b is advantageously perpendicular to the substrate 120. The optical guides 130a, 130b are thus at least partly located directly above the substrate 120. Each optical guide 130a, 130b is of parabolic or hyperbolic shape. Each optical guide 130a, 130b is delimited laterally by walls of parabolic or hyperbolic shape in order to shape the light rays which can propagate inside the optical guide 130a, 130b, for example by internal reflections. Optionally, one or more inner faces of the optical guides 130a, 130b are metallized in order to facilitate the reflections of the light rays on the walls of said optical guides 130a, 130b.

[0035] In the example illustrated on the FIGURE 1 , the optical guides 130a, 130b do not have the same shape in order to generate light beams of different shapes - thus making it possible to perform different light functions. In particular, an opening angle of the first optical guide 130a associated with the first light source 110a is less than an opening angle of the second optical guide 130b associated with the second light source 110b. Consequently, the light beam generated by the first light source 110a collaborating with the first optical guide 130a has an angular opening less than that of the light beam generated by the second light source 110b collaborating with the second optical guide 130b.

[0036] The angular aperture of the optical guide 130a, 130b or of the light beam formed by it translates an angular distance between the most divergent light rays of said light beam emerging from said optical guide 130a, 130b. More particularly, the angular aperture is defined by the angle subtended by the optical axis of said optical guide 130a, 130b (or of the corresponding light beam) and: for the optical guide 130a, 130b, the side wall delimiting said optical guide 130a, 130b; or for the light beam, the most divergent light ray.

[0037] In the example illustrated on the FIGURE 2 , the optical guides 130a, 130b do not have the same shape in order to generate light beams of different shapes - thus making it possible to achieve different light functions.

[0038] Each optical guide 130a, 130b comprises a projection section 133a, 133b in order to shape the light rays passing through the optical guide 130a, 130b and a guide section 131a, 131b in order to guide the light rays emitted by the corresponding light source 110a, 110b towards said projection section 133.

[0039] The guide section 131a, 131b, is, at its end located opposite the corresponding light source 110a, 110b, optically coupled to said light source 110a, 110b so that at least a portion of the light rays generated by said light source 110a, 110b is injected into the optical guide 130a, 130b. The optical coupling may be direct or indirect, via an optical device such as a collimator for example.

[0040] For the first optical guide 130a associated with the first light source 110a, the guide section 131a-132a comprises a first rectilinear part 131a and a second bent part 132a. Its section is generally constant. Its section is advantageously circular but can take any other shape, in particular polygonal.

[0041] The first part 131a of the guide section 131a-132a of the first optical guide 130a extends in a direction substantially perpendicular to the plane of the substrate 120 and / or of the first light source 110a as shown in the FIGURE 2 The first part 131a of the guide section 131a-132a thus extends directly above the first light source 110a and / or the substrate 120.

[0042] The second bent portion 132a of the guide section 131a-132a has a section preferably identical to that of the first rectilinear portion 131a of said guide section 131a-132a. The area of ​​the section of the second bent portion 132a of the guide section 131a-132a is preferably equal to that of the first rectilinear portion 131a. The shape of the section of the second bent portion 132a of the guide section 131a-132a is preferably of the same type as that of the first rectilinear portion 131a.

[0043] The second bent portion 132a of the guide section 131a is extended by the projection section 133a with continuity of the shapes of the walls and / or of the section. The projection section 133a has a divergent section in a direction away from the guide section 131a: an area of ​​the projection section 133a is greater than an area of ​​the guide section 131a at a distal end of the projection section 133a relative to the guide section 131a.In addition, the shape of the section of the first optical guide 130a evolves continuously between the guide section 131a and the projection section 133a: on the side of the end of the guide section 131a located towards the first light source 110a, the section of said guide section 131a is circular, while, on the side of a distal end of the projection section 133a relative to the guide section 131a, the section of said projection section 133a is polygonal, and more particularly rectangular with rounded corners. Between these two ends, the section of the first optical guide 130a evolves by continuous morphological transformation.

[0044] For the second optical guide 130b associated with the second light source 110b, the guide section 131b is rectilinear. Its section is generally constant. Its section is advantageously circular but can take any other shape, in particular polygonal. The guide section 131b extends in a direction substantially perpendicular to the plane of the substrate 120 and / or of the second light source 110b as shown in the FIGURE 2 The guide section 131b thus extends directly above the second light source 110b and / or the substrate 120.

[0045] The guide section 131b is extended by the projection section 133b with continuity of the shapes of the walls and / or of the section. The projection section 133b has a divergent section in a direction away from the guide section 131b: an area of ​​the projection section 133b is greater than an area of ​​the guide section 131b at a distal end of the projection section 133b relative to the guide section 131b.Additionally, the shape of the section of the second optical guide 130b evolves continuously between the guide section 131b and the projection section 133b: on the side of the end of the guide section 131b located towards the second light source 110b, the section of said guide section 131b is circular, while, on the side of a distal end of the projection section 133b relative to the guide section 131b, the section of said projection section 133b is polygonal, and more particularly rectangular with rounded corners. Between these two ends, the section of the second optical guide 130b evolves by continuous morphological transformation.

[0046] The projection section 133b of the second optical guide 130b extends in the same direction as the guide section 131b. In other words, the projection section extends substantially perpendicular to the substrate 120 and / or to the plane of the second light source 110b shown in the FIGURE 2 Advantageously, the projection section 133b extends directly above the substrate 120 and / or the second light source 110b.

[0047] At the distal end of the projection section 133b relative to the guide section 131b, the second optical guide 133b comprises a border 134b forming a sidewalk surrounding the projection section 133b.

[0048] In each example of realization illustrated on the FIGURES 1 et 2 , at the distal end of the optical guides 130a, 130b relative to the substrate 120, the lighting module 100 advantageously comprises an optical window 140 making it possible to close said optical guides 130a, 130b while allowing the transmission of the light beam(s) generated by said lighting module 100. According to a particular embodiment, the optical window 140 is integral with at least one of the optical guides 130a, 130b, and preferably with all the optical guides 130a, 130b, so that the assembly formed by the optical guides 130a, 130b and the optical window 140 forms a single, single-piece part.

[0049] The optical window 140 is formed at least in part by a material transparent to the wavelengths of the light rays generated by the light sources 110a, 110b, such as for example glass or a plastic material.

[0050] There FIGURE 3 illustrates a partial view of a ceiling light 10 of passenger compartment 1 integrating two lighting modules 100 in accordance with the first aspect of the invention, and the FIGURE 4 illustrates a partial view of a passenger compartment 1 of a motor vehicle in accordance with the second aspect of the invention, in which the different light beams generated by the lighting modules 100 are represented.

[0051] Advantageously, each lighting module 100 in accordance with the first aspect of the invention is housed in a ceiling light 10 in order to enable part of the passenger compartment 1 to be effectively illuminated for at least one of the users of the motor vehicle.

[0052] Preferably, each light module 100 is housed on a lateral side of the ceiling light 10, that is to say on either side of a longitudinal axis O of the ceiling light 10, coinciding with a longitudinal axis of the motor vehicle incorporating such a ceiling light 10. More particularly, each lighting module 100 is located symmetrically with respect to the longitudinal axis O. Each lighting module 100 may be located near a glazed opening 11 of the ceiling light 10.

[0053] The lighting module(s) 100 according to the first aspect of the invention are advantageously located on a front portion of the ceiling light 10 of the passenger compartment 1 of the motor vehicle. More particularly, the lighting module(s) are located at the level of the front seats 300a, 300b of the passenger compartment 1, for example directly above a seat or a backrest of the front seats 300a, 300b of the passenger compartment 1.

[0054] There FIGURE 4 illustrates the light intensities of the light beams projected by the lighting modules 100 housed in the ceiling light 10. In particular: a first lighting module 100 can generate a first light beam 210a and / or a complementary light beam collaborating with said first beam to form - at least in part, a second light beam 220; a second lighting module 100 can generate a first light beam 210b and / or a complementary light beam collaborating with said first beam to form - at least in part, the second light beam 220.

[0055] It is thus understood that each lighting module 100 can alternatively or complementary generate a first type of light beam when only the first light source 110a is activated - producing the first light beam 210, a second type of light beam when only the second light source 110b is activated - producing the complementary light beam, or a third type of light beam when the first 110a and second 11b light sources are simultaneously activated - producing at least in part the second light beam 220.

[0056] Each first light beam 210a, 210b generated by the lighting modules 100 produces a first light function of the reading light type: the spatial extent of the light rays shaped by the first optical guide 130a of each lighting module 100 is localized to an area of ​​small spatial extent, with respect to an area of ​​the passenger compartment 1. This technical characteristic of each first light beam 210a, 210b is obtained by a small opening angle of the corresponding first optical guide 130a, 130b.

[0057] In addition, the projection plane of each first light beam 210a, 210b is inclined relative to a horizontal plane of the passenger compartment 1, not shown in the FIGURE 4 . The horizontal plane of the passenger compartment 1 corresponds to the horizontal plane of normal use of the motor vehicle comprising said passenger compartment 1. The inclination of the projection plane of each first light beam 210a is preferably equal to 45° relative to the horizontal plane. Optionally, the inclination of the projection plane of each first light beam 210a is between 30° and 60° relative to the horizontal plane. This technical characteristic of each first light beam 210a, 210b is obtained by a similar inclination of the optical axis of the corresponding first optical guide 130a of the lighting module 100. More particularly, the first optical guide 130a is oriented along an optical axis whose angle relative to the horizontal plane is between 30° and 60°, preferably equal to 45°.

[0058] Subsequently, each first light beam generated by the lighting module(s) 100 has technical characteristics which make it suitable for focusing the light rays produced by the corresponding light sources 110a, 110b at a localized area of ​​the passenger compartment 1, capable of allowing reading by one of the users of said motor vehicle.

[0059] The second light source 110b of each lighting module 100 can be controlled so as to generate light rays, in addition to or alternatively to the emission of light rays by the first light source 110a of each lighting module 100. Preferably, the second light source 110b of at least one of the lighting modules 100 of the passenger compartment 1 is activated simultaneously with the first light source 110a of the corresponding lighting module 100. The simultaneous activation of the first light source 110a and the second light source 110b of at least one lighting module 100 makes it possible to generate at least in part the second light beam 220.

[0060] The complementary light beam generated by the second light source 110b of each lighting module 100 extends over a larger surface area than that of the first light beam 210. This technical characteristic is obtained by an opening angle of the second optical guide 130b greater than that of the first optical guide 130a.

[0061] In addition, the projection plane of each complementary light beam is substantially included in the horizontal plane of the passenger compartment 1. This technical characteristic is obtained by a similar inclination of the optical axis of the corresponding second optical guide 130b of the corresponding lighting module 100. More particularly, the second optical guide 130b is oriented along an optical axis substantially perpendicular to the horizontal plane.

[0062] According to a particular embodiment, for each lighting module 100, the first light beam 210 and the complementary light beam overlap at least partially in order to increase the lighting surface in the passenger compartment 1 and to produce ambient lighting of said passenger compartment 1.

[0063] According to a preferred embodiment, the first light beam 210a and / or the complementary light beam of the first lighting module 100 at least partially overlap the first light beam 210a and / or the complementary light beam of the second lighting module 100, according to any of the combinations. This advantageous configuration is illustrated more particularly in the FIGURE 4 , through the second light beam 220 whose spatial distribution covers almost the entire surface of the passenger compartment 1 located in front of the front seats 300a, 300b.

[0064] Obviously, each light source 110a, 110b of each lighting module 100, and / or each lighting module 100 of the passenger compartment 1 can be controlled selectively or collectively in order to generate at least one of the first light beams and / or at least one of the complementary light beams, in order to perform at least two different lighting functions among those described previously.

[0065] In summary, the invention relates to an interior lighting module 100 for a passenger compartment 1 of a motor vehicle, said lighting module 100 comprising at least two light sources 110a, 110b, each light source 110a, 110b being associated with an optical guide 130a, 130b in order to produce at least two distinct light beams. The lighting module 100 thus makes it possible to produce at least two light functions, preferably distinct from one another. According to the invention, the light sources 110a, 110b of the lighting module 100 are integral with the same flat substrate 120 in order to facilitate its integration into the passenger compartment 1 of the motor vehicle and to facilitate the establishment of electrical connections with the electrical circuit of said passenger compartment 1.

[0066] Of course, the invention is not limited to the examples which have just been described and numerous adjustments can be made to these examples without departing from the scope of the invention which is defined by the appended claims. In particular, the different characteristics, forms, variants and embodiments of the invention can be associated with each other in various combinations insofar as they are not incompatible or mutually exclusive. In particular, all the variants and embodiments described above can be combined with each other.

Claims

1. Interior luminous module (100) for an automotive vehicle, said module (100) comprising: - at least two light sources (110a, 110b) designed to be able to emit light rays; - at least two light guides (130a, 130b), each light guide (130a, 130b) having an optical axis which extends in a different direction from the optical axes of the other light guides (130a, 130b), each light guide (130a, 130b) being associated with one of the light sources (110a, 110b) in order to shape the light rays generated by said light source (110a, 110b) and generate a light beam; - a single substrate (120) for securing the at least two light sources (110a, 110b), the substrate (120) being planar; characterized in that the light guides (130) are made from a material transparent to the wavelengths of the light rays emitted by the light sources (110a, 110b), and in that the substrate comprises at least one flat surface forming a plane of elongation of said substrate, the flat surface of the substrate being formed by a first face which faces the light guides of the luminous module.

2. Module (100) according to the preceding claim, wherein each light source (110a, 110b) is optically coupled to an end of one of the light guides (130a, 130b).

3. Module (100) according to either one of Claims 1 and 2, wherein each light guide (130a, 130b) comprises a guide portion (131a, 131b) and a projection portion (133a, 133b).

4. Module (100) according to the preceding claim, wherein the guide portion (131a, 131b) is situated between the projection portion (133a, 133b) and the corresponding light source (110a, 110b).

5. Module (100) according to either one of Claims 3 and 4, wherein the guide portion (131a, 131b) is rectilinear.

6. Module (100) according to either one of Claims 3 and 4, wherein the guide portion (131a, 131b) comprises at least one curved part (132).

7. Module (100) according to any one of Claims 3 to 6, wherein the projection portion (133a, 133b) is parabolic or hyperbolic.

8. Module (100) according to any one of the preceding claims, wherein the at least two light guides (130a, 130b) comprise a first light guide (130a) for generating a first light beam at a first aperture angle and along a first optical axis, and a second light guide (130b) for generating a second light beam at a second aperture angle and along a second optical axis.

9. Module (100) according to the preceding claim, wherein the first aperture angle is smaller than the second aperture angle.

10. Module (100) according to either one of Claims 8 and 9, wherein the first light beam at least partially overlaps the second light beam.

11. Module (100) according to any one of Claims 1 to 10, the module (100) comprising an optical window (140) situated at a distal end of the at least two light guides (130a, 130b) relative to the substrate (120), said optical window (140) covering at least the two light guides (130a, 130b).

12. Module (100) according to the preceding claim, wherein the optical window (140) extends in a plane secant with a plane of elongation of the substrate (120).

13. Automotive vehicle interior (1) comprising at least one interior luminous module (100) according to any one of the preceding claims, each luminous module (100) being incorporated in a dome light (10) of said vehicle interior (1).

14. Vehicle interior (1) according to the preceding claim, taken in combination with Claim 8, wherein the first optical axis of the first light guide (130a, 130b) of the module (100) is oriented at a seat (300) of said vehicle interior (1), and the second optical axis of the second light guide (130a, 130b) is oriented towards a central console of said vehicle interior (1).

15. Vehicle interior (1) according to either one of Claims 13 and 14, wherein the first light guide (130a, 130b) is designed to generate a first light beam with an aperture angle smaller than an aperture angle of a second light beam generated by the second light guide (130a, 130b) .

16. Vehicle interior (1) according to any one of Claims 13 to 15, wherein the substrate (120) of each module (100) is electrically coupled to an electrical circuit of the dome light (10) and integral with said electrical circuit (10).