Light module of a lighting and / or signalling device for a vehicle

Abstract

The present invention relates to a light module (2) of a lighting device for a vehicle, comprising: - at least one ray-emitting assembly; and - an optical element (18) of which an input surface (181) is provided with a plurality of convergent optical patterns (184), the element further comprising an output surface (182) which is opposite the input surface and the outer face of which is at least partially reflective, the output surface having a plurality of non-reflective zones (186), located on or in the vicinity of a zone for focusing rays coming from the assembly for emitting light rays and passed through the convergent optical patterns (184), a source (16) of additional light rays, arranged on the side opposite the assembly for emitting light rays with respect to the optical element (18), being configured to emit a light beam towards the reflective output surface (182).

Description

[0001] DESCRIPTION

[0002] Title of the invention: Light module of a lighting and / or signaling device for a vehicle

[0003] The present invention relates to the fields of automobiles and optics, and more specifically concerns lighting and signaling devices for motor vehicles.

[0004] Lighting and signalling devices consist of headlamps arranged at the front of a motor vehicle and which comprise one or more light modules whose function is to ensure the projection of a lighting beam, intended to illuminate the road scene in front of the motor vehicle, and / or a signalling beam, intended to make the motor vehicle more easily visible to road users or intended to give these same road users an indication on the driving of the vehicle.

[0005] The lighting beams can be either a "low beam" or "dipped beam" type lighting beam, with a range of around 70 meters and which aims to illuminate the road scene without dazzling other road users, or a "high beam" type lighting beam, with a greater range of at least 100 meters. Obtaining these lighting beams requires a high-power light intensity, and therefore the provision of a specific light source and specific associated optics within the corresponding light module.

[0006] Signaling beams can consist of position lights, daytime running lights or DRL for Daytime Running Lamp in English, or flashing lights without this list being exhaustive. Such signaling beams are made with specific light sources and optics, distinct from those used for lighting lights, and it is classic to have a light module dedicated to the production of a signaling beam and a light module dedicated to the production of a lighting beam. Today, it is desired by motor vehicle manufacturers, in particular due to the use of light-emitting diodes and other optical elements allowing the production of light modules with various shapes, to offer light signatures specific to a manufacturer or a car brand.In other words, manufacturers want their car brand to be recognizable by the shape of the illuminating area of ​​the light functions when the lighting and signaling devices, i.e. the headlights at the front of the vehicle, generate a particular light beam. The diversity of optics for producing lighting beams and signaling beams, as mentioned above, can have the disadvantage of modifying the light signature of the vehicle depending on the type of beams generated by the light module. The very function of the light signature is therefore altered.

[0007] There is therefore a need to have a lighting and signaling device for vehicles which allows the same light signature to be maintained, whether the beam projected by this device is a lighting beam or a signaling beam.

[0008] The present invention at least partially overcomes the drawbacks of the technique, by providing a light module capable of equipping a lighting and / or signaling device and which is configured to generate both a lighting beam and a signaling beam on the same output interface.

[0009] To this end, the invention proposes a light module of a vehicle lighting device, comprising:

[0010] - at least one light ray emission assembly configured to send said light rays towards an input surface of an optical element of said light module,

[0011] - said optical element, said input surface of which is provided with a plurality of converging optical patterns, said optical element further comprising an output surface opposite said input surface and the external face of which is at least partially reflective, said light module being remarkable in that the output surface has a plurality of non-reflecting zones, each non-reflecting zone being located on or in the vicinity of a zone for focusing rays coming from the light ray emission assembly and passed through one of the converging optical patterns, and in that it further comprises a source of additional light rays, arranged on the side opposite the light ray emission assembly relative to the optical element, the source of additional light rays being configured to emit a light beam towards said reflective output surface.

[0012] The outer face of the output surface shall be understood as the face of that output surface facing the outside of the optical element.

[0013] The output surface is said to be partially reflective on this external face due to the presence of non-reflective areas. However, its reflection coefficient is generally high, the non-reflective areas representing less than ten percent of the output surface. The non-reflective areas of the output surface allow the light from the light ray emission assembly to pass through. These non-reflective areas do not include any reflective treatment, the term "reflective" being understood as not including vitreous reflections.

[0014] It should be noted that the non-reflective areas are configured to allow rays from the light ray emitting assembly to pass through. The light module has an optical axis corresponding to the general direction of the light beam which passes through the non-reflective areas of the optical element, when said beam has exited said optical element.

[0015] It should be understood by the fact that non-reflecting zones are located on or in the vicinity of a focusing zone that an optical pattern present on the input surface converges the light rays which encounter it into at least one focusing zone which is positioned on the output surface at a non-reflecting zone, or which is positioned in the vicinity of this output surface, opposite a non-reflecting zone. The at least one focusing zone may be centered on the non-reflecting zone, on the surface of the optical element. The at least one focusing zone may be arranged downstream of the output surface of the optical element, when considering the direction of propagation of the light rays.

[0016] The light ray emission assembly comprises at least a first source of light rays and, where appropriate, an optical member, of the reflector or collimator type for example, arranged opposite the first source of light rays to collect said light rays and shape them into a beam of light rays directed towards the entry surface of the optical element. The light ray emission assembly generates a beam of substantially parallel rays, in the direction of the optical element. The expression "substantially parallel" means that the beam may have an angular aperture due to the dimension of the light source.When the lighting device is in the mounting position on the motor vehicle, the output surface of the optical element is located facing the road, i.e. on the front face of the vehicle and oriented towards the outside of the vehicle, so that it is capable of reflecting towards the front of the vehicle the light rays emitted by the source of additional light rays. Furthermore, the output surface of the optical element is located on the propagation path of the rays emitted by the light ray emission assembly and the non-reflecting areas allow these light rays to propagate towards the road.

[0017] Thus, depending on the activated light source, the output surface appears to emit rays from the light ray emission assembly, forming for example a signaling beam, or appears to emit rays from the additional light ray source, forming for example a lighting beam, in particular a regulatory lighting beam. The invention therefore makes it possible to preserve the light signature of the vehicle regardless of the type of lighting function implemented, since regardless of the lighting function the lighting surface is formed by the output surface of the optical element.

[0018] According to an optional feature of the invention, the source of additional light rays is included in an additional light assembly capable of generating a lighting beam. Depending on the type of lighting and signaling functions implemented within the light module according to the invention, and the regulatory standards which are associated with the emission of these functions, the lighting beam and the signaling beam may not be emitted at the same time.

[0019] According to an optional characteristic of the invention, a reflection of said light beam on said output surface generates a reflected beam substantially parallel to the optical axis of the light module.

[0020] According to an optional feature of the invention, a reflection of said light beam on said output surface generates a reflected beam substantially parallel to a direction of propagation of the light rays having passed through the optical element and coming from the light ray emission assembly. This feature further improves the homogeneity of the light signature of the vehicle.

[0021] According to an optional characteristic of the invention, the light ray emission assembly is capable of emitting a signaling beam and the source of additional light rays is capable of emitting at least one lighting beam.

[0022] According to an optional characteristic of the invention, said optical element is a plate of transparent material covered with a layer of reflective material on said output surface, said non-reflective zones being openings distributed in said layer of reflective material. They are for example made in the form of slots or oblong holes. This embodiment has the advantage of being simple and inexpensive to produce.

[0023] According to an optional characteristic of the invention, the total surface area of ​​said openings is less than or equal to ten percent of said output surface area. Thus the light loss of the light beam from the source of additional light rays is very low and does not alter the lighting function of the beam.

[0024] According to an optional characteristic of the invention, the dimensions of each of said openings are less than or equal to two millimeters, and preferably one millimeter. These dimensions correspond, for example, to the width and length of one of the openings on the exit surface of the optical element. This makes it possible to homogenize the diffusion of the rays coming from the light ray emission assembly thanks to a plurality of such openings distributed over the exit surface.

[0025] According to an optional characteristic of the invention, said converging optical patterns are produced in the form of bosses on said input surface.

[0026] According to an optional feature of the invention, said converging optical patterns are configured to converge the light rays of the light ray emission assembly into two different zones according to two orthogonal convergence planes.

[0027] This allows the formation of a beam that has a greater angular aperture in one of the two directions considered. For example, convergence on the exit surface gives a first angular aperture, and convergence beyond the exit surface gives a second angular aperture smaller than the first.

[0028] According to an optional feature of the invention, the openings have an oblong or rectangular shape, with different dimensions depending on the directions of elongation of these openings. The elongated shape, for example oblong, of these openings makes it possible to adapt these openings as closely as possible around the impact zone of the light rays on the exit face. Advantageously, the oblong shapes are oriented to allow the emission of a light beam having the correct angular openings in the correct directions.

[0029] According to an optional feature of the invention, according to one of said convergence planes, the light rays coming from the light ray emission assembly converge on said output surface, and according to the other of said convergence planes, the light rays coming from the light ray emission assembly converge beyond said output surface, outside the optical element. In other words, the focusing of the light rays can be done on the output surface, and in particular on one of the openings of the output surface, considering one of the two convergence planes, to ensure that the rays pass through the openings in particular in the narrowest dimension of the openings, and the focusing of the light rays is also done beyond the output surface considering the other convergence plane, on a plane parallel to the widest dimension of the openings and comprising the optical axis.

[0030] According to an optional characteristic of the invention, the light ray emission assembly comprises at least one light ray source and an optical guide element configured to collect light rays emitted by said source and to direct them towards the optical element.

[0031] According to an optional feature of the invention, the light ray emission assembly comprises several first light ray sources and several optical guide elements, each of said optical guide elements being configured to collect light rays from a corresponding light ray source among said sources. This increases the power of the rays arriving at the input surface of the optical element.

[0032] According to an optional feature of the invention, said optical guide elements are deflectors forming portions of parabolic mirror, offset from each other. The deflectors are for example offset along the optical axis of the light rays arriving on the entry surface of the optical element. This arrangement makes it possible to reduce the size of the light module. In an alternative embodiment, the optical guide elements are collimators, or other types of deflectors.

[0033] The invention also relates to a light device, in particular a lighting and / or signaling device, comprising a housing and a transparent closing wall defining a cavity in which at least one light module, as just mentioned, is arranged, said transparent closing wall being capable of being crossed by the rays coming from said optical element and / or reflected by said optical element. The closing glass is for example a glass or a transparent plastic cover externally protecting the light module according to the invention and defining from the outlet an illuminated surface through which the visual signature is visible. The lighting and / or signaling device is typically a light or a projector, in particular arranged at the front of the vehicle.

[0034] 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:

[0035] [fig.i] schematically represents a light device comprising a light module according to the invention, in a preferred embodiment of the invention,

[0036] [fig.2] illustrates the path of light rays through an optical element of the light module according to the invention, in this preferred embodiment of the invention,

[0037] [fig.3] illustrates an output surface of the optical element of figure 2, and

[0038] [fig.4] illustrates the path of light rays through the optical element seen from a different angle than that illustrated in figure 2.

[0039] The invention relates to a light module 2 of a lighting and / or signaling device for a vehicle, as illustrated in FIG. 1, said light module being configured to generate both a signaling beam and a lighting beam, with an illumination surface which is the same regardless of the beam generated.

[0040] The lighting and / or signaling device in which the light module according to the invention is housed may be mounted on a front lateral end of a vehicle, and take the form of a vehicle front headlight. The vehicle lighting device may also comprise other light modules than the one which will be described below, provided that it comprises at least one light module configured to generate both a signaling beam and a lighting beam.

[0041] The lighting and / or signaling device comprises a housing, shown here schematically in dotted lines, which forms with a transparent closing wall a cavity in which are housed different optical components of a light module 2, including at least one assembly for emitting light rays, an optical element and a source of additional light rays.

[0042] Each light ray emission assembly comprises a light source, here a light-emitting diode 4, 6 mounted on a printed circuit 8 enabling the diode to be powered. Each light-emitting diode 4, 6 participates in generating a signaling beam, for example a direction indicator light beam or a position light or a daytime running light. For example, this light-emitting diode 4, 6 can be likened to a first light source of low temperature, capable of emitting a sufficient luminous flux to produce a signaling beam.

[0043] In the illustrated example, the light module 2 comprises two light ray emission assemblies, each with a light-emitting diode 4, 6, and these light-emitting diodes are positioned opposite each other, being arranged on opposite faces of the printed circuit. Alternatively, the light module comprises a single emission assembly, or more than two emission assemblies. Furthermore, although in this embodiment each emission assembly comprises a single light-emitting diode, alternatively each emission assembly comprises one or more light-emitting diodes.

[0044] Each light ray emission assembly of the light module 2 also comprises an optical guide element 10, 12 configured to deflect the light rays emitted by the corresponding light-emitting diode towards the optical element which will be described below. The presence of an optical guide element, as well as its configuration, is not limiting of the invention since the emission assembly directs light rays towards the optical element.

[0045] In the illustrated example, the optical guide element 10, 12 is a parabolic reflector and the light-emitting diode 4, 6 associated within the light assembly is arranged at the focus of the parabolic reflector 10, 12 respectively associated with each light-emitting diode. Thus, the rays from the light-emitting diodes 4, 6 are collected by the respective parabolic reflectors 10, 12 which send them towards an entry surface 181 of an optical element 18, mentioned previously and also forming part of the light module 2. Here, the parabolic reflector 10 collects the rays emitted by the diode 4 and directs them towards the entry surface 181, while the parabolic reflector 12 collects the rays emitted by the diode 6 and directs them towards the entry surface 181.

[0046] The emission assemblies, and in particular here the parabolic reflectors 10, 12, are configured so that the emitted light rays are directed towards this entry surface 181, along an optical axis substantially parallel to a longitudinal direction X corresponding to the longitudinal direction in the reference frame of the vehicle. A vertical direction Z orthogonal to the longitudinal direction X corresponds to the vertical direction in the reference frame of the vehicle. Finally, a transverse direction Y orthogonal to the horizontal directions X and vertical directions Z corresponds to a transverse direction in the reference frame of the vehicle.

[0047] The fact of using two parabolic reflectors 10, 12 respectively associated with one of the light-emitting diodes 4, 6, on either side of a printed circuit board 8, with moreover a longitudinal offset of the light-emitting diodes 4, 6, makes it possible to propose a compact light module for the realization of one or more signaling functions. As mentioned, alternatively, a single light-emitting diode or more than two light-emitting diodes can be used, and likewise a single optical guide element or more than two optical guide elements could be implemented to generate a signaling beam directed onto the input surface 181 of the optical element 18.

[0048] In another variant, instead of the parabolic reflectors 10, 12, each light ray emission assembly of the light module 2 comprises collimators, or other optical devices, which collect the rays coming from the light emitting diodes 4, 6 to send them in a beam of substantially parallel rays onto the input surface 181 of the optical element 18. The optical element 18 takes the form of a plate extending parallel to the transverse direction Y to be arranged across the longitudinal direction of propagation of the light rays coming from the emission assembly. The optical element is arranged on the path of the light rays coming from the emission assembly, being arranged between this assembly and the transparent closing wall 20 of the lighting and / or signaling device.

[0049] The optical element 18 has, opposite the entry surface 181 previously mentioned, an exit surface 182 which faces the transparent closing wall 20 of the lighting and / or signaling device.

[0050] As can be seen in Figure 2 in particular, the optical element 18 is inclined relative to a plane perpendicular to this longitudinal direction. The optical element is here inclined by 45 0 relative to such a perpendicular, vertical and transverse plane. The direction of inclination of the optical element 18 is such that the source 16 of additional light rays and the transparent closing wall 20 are arranged on the same side of the light module if we consider that the plane in which the optical element 18 is inscribed cuts the light module into two distinct parts.

[0051] The optical element 18 is made of transparent material, for example glass, polycarbonate (PC) or polymethyl methacrylate (PMMA), and comprises on its output surface 182, and more particularly an external face of the output surface, a layer of reflective material 183, this layer being for example made by vaporizing aluminum on the output surface 182.

[0052] Figure 3 illustrates more particularly the external face of this exit surface 182, that is to say the face facing the outside of the optical element. The layer of reflective material 183 comprises openings 186 distributed over the exit surface 182, which form zones in which the transparent material of the optical element is not covered with a reflective material.It is understood that the presence of reflective material on the output surface can prevent the propagation of light rays coming from the light ray emission assemblies, in particular here the light-emitting diodes 4, 6, and which arrive at the input surface 181 of the optical element 18 and it is understood in this context that the openings 186 made in this reflective material have the effect of locally allowing the light coming from these light ray emission assemblies to pass through the optical element 18, via these openings 186, and to arrive at the transparent closing wall 20. These openings 186 are for example formed by laser cutting on the layer of reflective material 183.

[0053] The layer of reflective material 183 makes it possible to reflect a light beam, here a lighting beam 162, coming from the source 16 of additional light rays previously mentioned. This source 16 of additional light rays is arranged so that the lighting beam 162 arrives with an angle of incidence close to 45 0 on the output surface 182 so that the lighting beam 162 is reflected by the layer of reflective material 183 in the longitudinal direction X towards the closing wall 20 of the lighting and / or signaling device. It should be noted that the angle of incidence mentioned, here substantially equal to 45 0 , can vary depending on the inclination which is given to the plate forming the optical element 18 relative to a plane perpendicular to the optical axis of the light module, here substantially equal to 45 0 .

[0054] The openings 186 on the layer of reflective material 183 are small enough not to substantially alter the light output of the lighting beam. For example, they represent less than 7.5% of the reflective surface of the optical element 18.

[0055] The plate forming the optical element also comprises on its entry surface 181 converging optical patterns 184. These patterns have the function of directing as many rays as possible from the light ray emission assemblies, as they pass through the optical element 18, towards the openings 186. These converging optical patterns 184 are produced in the form of bosses on the entry surface 181 of the optical element 18. The corresponding surface portion is calculated so that the rays from the light ray emission assemblies, which arrive at these bosses while being parallel to each other in the longitudinal direction X, converge towards the openings 186. As will be detailed below, the bosses forming the converging optics 184 are configured to converge the light rays in the vicinity of the openings, but in different zones depending on the plane considered.

[0056] It should be noted that in one variant, the emission assemblies each generate a convergent or divergent beam, the rays in these beams not all being parallel to each other. In this case, certain convergent optical patterns 184 are arranged differently from the others on the entry face 181, and / or the shape of their boss is adapted, to allow the beams coming from the emission assemblies to pass into the openings 186 of the layer of reflective material 183.

[0057] In the illustrated example, the bosses are formed at a distance from each other, with a flat surface disposed between two bosses. Alternatively, the bosses are contiguous to each other.

[0058] As illustrated in Figure 3, the openings 186 have elongated slot shapes on the exit surface 182, very narrow in the transverse direction Y. As a non-limiting example of the invention, the converging patterns 184 form bosses extending over a square surface with a side length of one millimeter, and the openings 186 have a width of 0.12 millimeters and a length of 0.6 millimeters, measured in the plane of the exit surface of the optical element 18. The width of an opening 186 extends in the transverse direction Y parallel to the exit surface 182, and the length of an opening 186 extends in a direction parallel to this exit surface 182, but orthogonal to the transverse direction Y.

[0059] In Figure 3, the view of the output surface is shown when looking at the optical element 18 with a viewing angle along an axis substantially perpendicular to the plane of elongation of the optical element. In this figure, each boss 184 is shown in transparency by dotted lines on the output surface 182 of the optical element 18. It can be seen that with this viewing angle, each boss 184 is located above the opening 186 towards which it deflects the light. This is due to the fact that the rays from the light-emitting diodes 4, 6 do not arrive parallel to the optical axis of each boss, since the latter is inclined, here with an angle substantially equal to 45 degrees, relative to the longitudinal direction X.

[0060] In different variants of what has just been mentioned, the bosses have a surface area different from one square millimeter, but of the order of one square millimeter, and the openings have different dimensions but always less than one or two millimeters. In another variant the bosses are adjacent to each other, that is to say they are made continuously on the entry surface 181 without a flat surface interposed between them.

[0061] It should be noted that the number of openings 186 and bosses 184 illustrated in Figures 2 to 4 may not be representative of the exact number that would be implemented on the optical element 18, in particular to simplify the reading of the figures.

[0062] The shape of the converging patterns 184, here in bosses, is configured to converge the rays coming from the light-emitting diodes 4, 6 according to two specific convergence planes, that is to say on different zones depending on whether one considers a vertical longitudinal plane (X, Z) or depending on whether one considers the transverse direction Y, as illustrated respectively in figures 2 and 4. Such a double convergence makes it possible to obtain the desired shape for the emitted beam, which is twice as wide as it is high, in order to comply with the regulations. It should be understood that a single convergence would give a beam as high as it is wide and would cause a lot of light to be lost in directions where it is not necessary. This specific double convergence is obtained by the shape of the bosses whose surface is toroidal, or quasi-toroidal.

[0063] In the vertical longitudinal plane (X, Z) mentioned, the point of convergence is arranged beyond the exit surface, outside the optical element 18. The rays coming from the light ray emission assembly are refracted by the difference in medium at the exit of the openings 186 and arrive in focusing zones 188 visible in FIG. 2. A focusing zone 188 corresponds to a zone in which rays coming from the light-emitting diodes 4, 6 and deflected where appropriate by the parabolic reflectors 10, 12 converge, and this focusing zone is located in the vicinity of an opening 186 through which these rays pass, outside the optical element.Beyond this focusing zone 188, the rays coming from the light ray emission assembly diverge and spread over the entire surface of the transparent closing wall 20, without this being a problem from a glare point of view since these rays are intended to form a signaling beam with low light intensity.

[0064] On the other hand, when the optical element 18 is viewed transparently at a viewing angle V referenced in FIG. 2, the rays coming from the light ray emission assembly converge on the output surface 182, to be certain of passing as a whole through the corresponding opening, as illustrated in FIG. 4, in which the optical element 18 is shown at the viewing angle V.

[0065] As mentioned, the rays coming from the light ray emission assembly are thus guided, in particular via the bosses of the entry surface of the optical element, through the openings 186 to be directed towards the transparent closing wall 20, it being understood that the rays coming from the light source 16 of additional rays, after their deflection by the reflecting surface of this same optical element, are also directed towards the transparent closing wall 20, with for their part an orientation substantially parallel to a transverse longitudinal plane (X, Y).

[0066] As a result, seen from the outside of the light module 2, the light rays exit through the same optical surface whether they come from a first or a second light source, that is to say here whether they come from the light ray emission assembly or from the source of additional light rays. The invention thus achieves the aim it had set itself, insofar as the vehicle therefore has the same light signature, whether it emits a signaling beam or a lighting beam.

Claims

CLAIMS 1- Light module (2) of a lighting device for a vehicle, comprising: - at least one light ray emission assembly configured to send said light rays towards an input surface (181) of an optical element (18) of said light module (2), - said optical element (18), said input surface (181) of which is provided with a plurality of converging optical patterns (184), said optical element (18) further comprising an output surface (182) opposite said input surface and the external face of which is at least partially reflective, said light module (2) being characterized in that the output surface has a plurality of non-reflecting zones (186), each non-reflecting zone being located on or in the vicinity of a zone for focusing rays coming from the light ray emission assembly and passed through the converging optical patterns (184), and in that it further comprises a source (16) of additional light rays, arranged on the side opposite the light ray emission assembly relative to the optical element (18), the source (16) of additional light rays being configured to emit a light beam towards said reflective output surface (182). 2- Light module (2) according to claim 1, wherein a reflection of said light beam on said output surface (182) generates a reflected beam substantially parallel to an optical axis of the light module. 3- Light module (2) according to claim 1 or 2, in which the light ray emission assembly is capable of emitting a signaling beam and the source (16) of additional light rays is capable of emitting at least one lighting beam. 4- Light module (2) according to any one of claims 1 to 3, wherein said optical element (18) is a plate of transparent material covered with a layer of reflective material (183) on said surface of output (182), said non-reflective zones (186) being openings distributed in said layer of reflective material (183). 5- Light module (2) according to claim 4, in which the total surface area of ​​said openings is less than or equal to ten percent of said output surface area (182). 6- Light module (2) according to any one of the preceding claims, in which said converging optical patterns (184) are produced in the form of bosses on said entry surface (181). 7- Light module (2) according to any one of the preceding claims, wherein said converging optical patterns (184) are configured to converge the light rays from said at least one first source (4, 6) into two different zones according to two orthogonal convergence planes. 8- Light module (2) according to the preceding claim, wherein according to one of said convergence planes, the light rays coming from the light ray emission assembly converge on said output surface (182), and according to the other of said convergence planes, the light rays coming from the light ray emission assembly converge beyond said output surface (182), outside the optical element. 9- Light module (2) according to the preceding claim, in which the light ray emission assembly comprises at least one light ray source (4, 6) and an optical guide element (10, 12) configured to collect light rays emitted by said source and to direct them towards the optical element (18). 10- Lighting and / or signaling device comprising a light module (2) according to any one of the preceding claims, comprising a housing and a transparent closing wall (20) defining a cavity in which at least one light module according to one of the preceding claims is arranged, said transparent closing wall (20) being capable of being crossed by the rays coming from said optical element (18) and / or reflected by said optical element (18).

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