EP3887716A1

EP3887716A1 - Lighting device

Info

Publication number: EP3887716A1
Application number: EP19805946.1A
Authority: EP
Inventors: Cyril Herbin; Lucas PERDRIX; Paulo Ferreira
Original assignee: Valeo Vision Belgique SA
Current assignee: Valeo Vision Belgique SA
Priority date: 2018-11-30
Filing date: 2019-11-15
Publication date: 2021-10-06
Anticipated expiration: 2039-11-15
Also published as: CN113167455A; FR3089277A1; US20220120405A1; FR3089172A1; EP3887716B1; CN113167455B; FR3089172B1; US11536434B2

Abstract

The invention relates to a lighting module (1) for a vehicle comprising: - at least one light source (10), - an open casing (12), - a closure element (13) for closing the open casing (12), characterized in that the open casing (12) comprises a positioning recess (126) on an optical element (30), the positioning housing (126) comprising a plurality of grooves (127), and a fastening tab (124) on a casing (3) of the motor vehicle comprising the optical element (30) and a glass (31) for closing the casing (3), the lighting module (1) being configured to perform a rotational movement and to fasten itself at the end of the rotation to the casing (3) via the fastening tab (124) of the open casing (12).

Description

Title of the invention: Lighting device

[1] The present invention relates to a light module for a motor vehicle. It finds a particular but non-limiting application in additional signaling lights.

[2] A light module such as an additional signaling light, known to a person skilled in the art, comprises at least one light source, a light source support, an open housing, a housing closing element, a electrical connection harness for connecting said at least one light source to an external connector of the motor vehicle. The light module is fixed with a screw to a housing of the motor vehicle closed by a glass and arranged at the grid level of the front face of the motor vehicle. It is in particular fixed in an ice support at the level of said grid.

[3] A disadvantage of this prior art is that due to the environmental constraints on the motor vehicle, there is little space to mount the light module on the motor vehicle. It is difficult to mount / dismount the light module with a screwdriver due to the presence of other parts such as the radiator which are behind the light module. Access for mounting / dismounting using a screwdriver is therefore difficult.

[4] In this context, the present invention aims to propose a light module which makes it possible to solve the mentioned drawback.

[5] To this end, the invention proposes a light module for a motor vehicle comprising:

- at least one light source,

- an open box,

a closing element for closing said open case,

characterized in that said open housing comprises a positioning housing on an optical element, said positioning housing comprising a plurality of grooves, and a lug on a housing of said motor vehicle comprising said optical element and a window for closing said housing , said light module being configured to perform a rotational movement and catch at the end of rotation to said housing via said hooking tab of said open housing.

[6] Thus, as will be seen in detail below, thanks to the positioning housing, the grooves, and the hanging tab, it is no longer necessary to use a screwdriver to fix the light module. Furthermore, the rotational movement allows the light module to be easily mounted on the motor vehicle housing and facilitates access to the light module for an operator. In addition, the no longer using a screwdriver avoids damaging the glass support since there is no longer any screwing / unscrewing action on the glass support.

[7] According to non-limiting embodiments, the light module for a motor vehicle may further include one or more additional characteristics taken alone or in any technically possible combination, from the following.

[8] According to a nonlimiting embodiment, said optical element is a light guide.

[9] According to a nonlimiting embodiment, said positioning housing comprises two or three grooves.

[10] According to a nonlimiting embodiment, said attachment tab is configured to hang on a support for attaching an optical element support of said motor vehicle housing, or to a support for hooks an ice support of said motor vehicle housing.

[11] There is further provided a housing for a motor vehicle, said housing comprising an optical element, characterized in that said housing further comprises:

- an optical element support,

- a lens formed by a lens support and a transparent optical part,

- A hanging support for a hanging lug of a light module, said hanging support being integral with said optical element support or said glass support.

[12] According to a nonlimiting embodiment, said optical element comprises lugs for positioning a light module.

[13] According to a nonlimiting embodiment, said optical element is positioned in the center of said positioning lugs.

[14] According to a nonlimiting embodiment, the positioning pins are arranged around said optical element.

[15] It is further proposed a light device comprising a light module according to any one of the preceding characteristics and a housing according to any one of the preceding characteristics.

[16] The invention and its different applications will be better understood on reading the following description and on examining the accompanying figures:

[17] [Fig. the] represents a three-quarter view from above of a light device comprising a light module, according to a first non-limiting embodiment of the invention, [18] [Fig. lb] is a zoom on the light module of figure la,

[19] [Fig. 2] is a three-quarter view downwards of the light device of FIG. La, according to a nonlimiting embodiment,

[20] [Fig. 3a] represents the light module of FIG. 1b cooperating with an optical element, according to a nonlimiting embodiment,

[21] [Fig. 3b] is a sectional view of the light module of FIG. 3a cooperating with said optical element, according to a nonlimiting embodiment,

[22] [Fig. 4a] is an assembled view of the light module of FIGS. 1a and 1b, according to a nonlimiting embodiment,

[23] [Fig. 4b] is a sectional view of the light module of FIG. 4a,

[24] [Fig. 5] is an exploded view of the light module of FIG. 4a, the light module comprising at least one light source, a light source support, an open housing, a housing closing element, according to a nonlimiting embodiment ,

[25] [Fig. 6a] is a view of the open housing of FIG. 5, according to a nonlimiting embodiment,

[26] [Fig. 6b] is a sectional view of the open housing of FIG. 6a, according to a nonlimiting embodiment,

[27] [Fig. 6c] is a zoomed view of part of the open housing of FIG. 6a, according to a non-limiting embodiment,

[28] [Fig. 7a] is a perspective view of the optical element of the light module of FIG. 3a, according to a nonlimiting embodiment,

[29] [Fig. 7b] is a zoomed view of part of the optical element of FIG. 7b, according to a nonlimiting embodiment,

[30] [Fig. 8] is a zoomed view of part of an optical element support for the optical element of FIGS. 7a and 7b, according to a non-limiting embodiment,

[31] [Fig. 9a] is a first zoomed view of the optical element of FIGS. 7a and 7b mounted on the optical element support of FIG. 8, according to a nonlimiting embodiment,

[32] [Fig. 9b] is a second zoomed view of the optical element of FIGS. 7a and 7b mounted on the optical element support of FIG. 8, according to a nonlimiting embodiment, [33] [Fig. 10] is a zoomed view of the optical element-optical element support assembly of FIGS. 9a and 9b assembled with a window support for a housing of the vehicle of the light device of FIG. 1, according to a non-limiting embodiment ,

[34] [Fig. 11a] is a partial disassembled view of a light device comprising a light module and a housing of the motor vehicle, according to a second nonlimiting embodiment of the invention,

[35] [Fig. 11b] is a zoom on the light module assembled on the motor vehicle housing of the light device of FIG. 11a, according to a nonlimiting embodiment,

[36] [Fig. 12a] is a partial disassembled view of the light device of FIG. 11a, which illustrates a first step for mounting the light module on the housing of the motor vehicle, according to which the light module is in a first position, according to one embodiment not limiting,

[37] [Fig. 12b] is a partial view of the light device of FIG. 11a, which illustrates a second step for mounting the light module on the housing of the motor vehicle, according to a nonlimiting embodiment,

[38] [Fig. 12c] is a partial view of the light device of FIG. 11a, which illustrates a third step for mounting the light module on the housing of the motor vehicle, according to a non-limiting embodiment,

[39] [Fig. 12d] is a partial assembled view of the light device of FIG. 11a, which illustrates a fourth step for mounting the light module on the housing of the motor vehicle, according to which the light module is in a second position, according to one embodiment not limiting, and

[40] [Fig. 12e] is a partial view of the light device of FIG. 11a, which illustrates the passage of the light module between the first position of FIG. 12a and the second position of FIG. 12d, according to a nonlimiting embodiment.

[41] Identical elements, by structure or by function, appearing in different figures keep, unless otherwise specified, the same references.

[42] The light module 1 for a motor vehicle according to the invention is described with reference to Figures la to 12d. By motor vehicle is meant any type of motor vehicle.

[43] The light module 1 is juxtaposed with a housing 3 of the motor vehicle, the whole forming a light device 4. The light module 1 thus forms part of a light device 4 illustrated in the figure it. In non-limiting embodiments, the light device 4 is a signaling light and / or a projector, or an interior lighting device.

[44] In a nonlimiting embodiment illustrated in FIG. 1a, the housing 3 has an opening closed by a crystal 31. In nonlimiting embodiments, the housing 3 comprises:

- a) at least one optical element 30 as illustrated in FIG. 3a closed by a glass 31 as illustrated in FIG. la or

- b) an ice cream 31 alone.

[45] Note that the housing 3 may include other components configured to emit a light beam independently of the light module 1. The housing 3 is otherwise called second housing 3 in the following description.

[46] The nonlimiting embodiment a) is taken as a nonlimiting example in the following description. The glass 31 is formed by a glass support 33 and a transparent optical part 34. It makes it possible to close the housing 3. The housing 3 further comprises an optical element support 32. As illustrated in the figure 8, the optical element support 32 comprises an orifice 320 through which an end 30c of the optical element 30 can pass. In a nonlimiting embodiment, the orifice 320 has a hexagonal shape which cooperates with a hexagonal shape of the tip 30c of the optical element 30. The optical element 30 is thus held in position as illustrated in FIG. 9a . Furthermore, the optical element support 32 comprises a longitudinal body 321 in which the body 30b of the optical element 30 can be housed as illustrated in FIG. 9b. The optical element support 32 is configured to cooperate with the glass support 33 as illustrated in FIG. 10. As can be seen, the ice support 33 covers the optical element support 32.

[47] The housing 3 further comprises a hanging support 310 for fixing the light module 1 on said housing 3 and locking it in position. In a first nonlimiting embodiment illustrated in FIG. 1b, the attachment support 310 is integral with said glass support 33. As can be seen in FIG. 1b, the attachment tab 124 of the light module 1 cooperates with the hanging support 310 of the ice support 33.

[48] In a second embodiment illustrated in FIG. 11a, the attachment support 310 is integral with said optical element support 32. As can be seen in FIG. 11b, the attachment tab 124 of the light module 1 cooperates with the attachment support 310 of the optical element support 32.

[49] In a non-limiting embodiment, the light module 1 is an additional signaling light juxtaposed with the housing 3 comprising said at least one optical element 30 closed by a window 31. The signaling light makes it possible to perform a light signaling function. The signaling light is taken as a nonlimiting example in the following description. Of course, the invention is not limited to the signaling light, but can be applied to other types of light modules. The optical element 30 is configured to cooperate with at least one light source 10 (described below) of said light module 1. In a non-limiting embodiment, it forms a projector. The projector allows to realize a light lighting function. Of course, the invention is not limited to the projector. Thus, in the nonlimiting embodiment taken as an example, the light device 4 is a projector and a signaling light.

[50] In a nonlimiting embodiment, the light signaling function is:

- a Tl flashing light called in English "Turn Indicator", and / or,

- a DRL daytime running light called in English "Daytime Running Lamp", and / or,

- a PL parking light called in English "Parking Lamp", and / or,

- a position light T called in English "Tail", and / or,

- an STP stop light called in English "Stop lamp", and / or,

- a reversing light R called in English "Reverse", and / or,

- an FG fog lamp called in English “Fog lamp”, and / or,

- a side light SM called in English "Side marker", and / or

- a third stop light CHMSL, called in English "Center High-Mount Stop Light".

[51] As illustrated in Figures la to 2, the light module 1 is mounted on the housing 3 of the motor vehicle. In particular, it is mounted at the rear 3a of said housing 3. In a nonlimiting embodiment, the light module 1 is mounted between the housing 3 and the bodywork (not shown) of the motor vehicle. It is mounted in a limited space, especially in the direction of depth. In a nonlimiting example, this space is approximately 10 centimeters. In a nonlimiting example, there is a clearance of approximately 10mm between the light module 1 and the bodywork. As illustrated in FIG. 1a, the light module 1 is juxtaposed with the housing 3. The glass 31 of the housing 3 is on the side opposite to the light module 1. It is located on the front side 3b of the housing 3.

[52] The optical element 30 of the housing 3 extends on the side of said glass 31. In the nonlimiting example illustrated in FIGS. 3a and 3b, the optical element 30 of the housing 3 is a light guide which s 'extends along the housing 3. This nonlimiting embodiment is taken as a nonlimiting example in the following description. As illustrated in FIGS. 7a and 7b, the light guide 30 comprises reflective elements 30d, a body 30b with two ends 30c, one of the ends 30c comprising a planar surface 30a. The flat surface 30a is configured to be arranged facing the light source 10. The body 30b is configured to be arranged in the element support optics 32 as illustrated in FIG. 9b. One of the ends 30c of the body 30b is configured to fit into the interface 122 of the open housing 12 described below. In a nonlimiting embodiment, said end 30c has a hexagonal shape so as to fit correctly in the orifice 321 of the optical element support 32. Furthermore, in a nonlimiting embodiment illustrated in FIG. 7b , the light guide 30 further comprises positioning pins 300 of the light module 1. In a nonlimiting example illustrated, it comprises two positioning pins 300. In a nonlimiting embodiment, the light guide 30 is positioned at center of said positioning pins 300. The positioning pins 300 are arranged around the light guide 30. This allows better positioning relative to said light source 10 described below. The positioning pins 300 are arranged on the periphery of one of the ends 30c of the light guide 30. The positioning pins 300 are configured to cooperate with grooves 127 and guide zones 128 of a positioning housing 126 of the housing open 12 as described below.

[53] As illustrated in FIGS. 4a to 5, the light module 1 comprises:

- at least one light source 10,

- a light source support 11,

- an open box 12,

a closing element 13 of the open housing 12,

a primary electrical connection element 14 connected to the light source support 11,

- A secondary electrical connection element 15 connected to the housing.

[54] These various elements are described in detail below.

[55] The light source 10 is illustrated in FIGS. 3b, 4b and 5. In a nonlimiting embodiment illustrated, the light module 1 comprises a single light source 10. In another nonlimiting embodiment not illustrated , the light module 1 comprises a plurality of light sources 10. In a nonlimiting embodiment, said at least one light source 10 is a semiconductor light source. In a nonlimiting embodiment, the semiconductor light source is part of a light emitting diode. By light-emitting diode is meant any type of light-emitting diode, whether in non-limiting examples of LEDs (“Light Emitting Diode”), OLEDs (“organic LEDs”), AMOLEDs (Active-Matrix-Organic LEDs), or FOLED (Flexible OLED).

[56] Said at least one light source 10 is configured to emit light rays which cooperate with the optical element 30 to generate a light beam. Said light beam makes it possible to carry out the light signaling function. In the nonlimiting example illustrated on the FIG. 3b, said at least one light source 10 cooperates with the light guide 30. It is arranged opposite one end of the light guide 30. In a nonlimiting embodiment, said at least one light source 10 is arranged on the light source support 11 described below.

[57] The light source support 11 is illustrated in FIGS. 3b, 4b and 5. It is sandwiched between the open housing 12 and the closing element 13. It extends at 90 ° relative to the the axis of emission of the light rays from said at least one light source 10. In a nonlimiting embodiment illustrated in FIG. 5, the light source support 11 is a printed circuit card, otherwise called PCBA card and known by the acronym “Printed Circuit Board Assembly”. This PCBA card comprises electronic components (not illustrated) such as in a nonlimiting example a control device (not illustrated) of said at least one light source 10, otherwise called "driver" in English.

[58] As illustrated in FIG. 5, the primary electrical connection element 14 is connected to the light source support 11. As illustrated in FIG. 4b, it cooperates with the secondary electrical connection element 15 to make an electrical connection. In a nonlimiting embodiment, said primary electrical connection element 14 is welded to the light source support 11. In a nonlimiting embodiment illustrated, said primary electrical connection element 14 is a female connector. Having a female connector on the light source support 11 makes it possible to have a more stable surface support than if it were a male connector. As illustrated in FIG. 5, the female connector 14 is composed of two pins 14a, 14b (one positive, the other negative) assembled on the light source support 11. In a nonlimiting example, the two pins 14a, 14b are welded to the light source support 11.

[59] In a nonlimiting embodiment not illustrated in FIG. 5, the light source support 11 further comprises at least one reference orifice 110 configured to position it relative to the open housing 12. In an alternative embodiment nonlimiting, it includes two reference orifices 110. These cooperate with two reference pins 120 of the open housing 12. They allow referencing along axes Y and Z parallel to the light source support

11.

[60] In a nonlimiting embodiment not illustrated in FIG. 5, the light source support 11 further comprises at least one positioning orifice 111 configured to guide the open housing 12 when it is assembled to the element closure 13. In a non-limiting variant, it comprises three positioning orifices 111. They cooperate with three tabs of positioning 121 of the open housing 12. They ensure correct positioning laterally (in the two lateral directions).

[61] The closing element 13 is illustrated in FIGS. 1b to 5. In a nonlimiting embodiment, the closing element 13 is a radiator or a closing hood. In the nonlimiting example illustrated, it is a radiator. In a nonlimiting embodiment, the closure element 13 is fixed to the open housing 12 by welding. . The light source support 11 is fixed to the closing element 13. When the closing element 13 is a radiator, in a nonlimiting embodiment, the light source support 11 is fixed to the radiator 13 via a adhesive. When the closure element 13 is a closure cover, in a nonlimiting embodiment not illustrated, the light source support 11 is fixed to the closure cover 13 via fixing clips or stoppers. In a nonlimiting embodiment illustrated in FIG. 5, the closing element 13 comprises at least one slide 131 for positioning the open housing 12. In a nonlimiting variant, it comprises three slides 131. They cooperate with the positioning tabs 121 of the open housing 12.

[62] The open housing 12 is illustrated in Figures 1b to 6b. It is configured to cover the light source support 11. In a nonlimiting embodiment illustrated in FIG. 6a, the open housing 12 comprises at least one reference pin 120 for positioning the light source support 11. In a non-limiting variant, it includes two reference pins 120. The two reference pins 120 are configured to ensure the positioning of the light source support 11. They cooperate with the reference orifices 110 of the light source support 11 In a nonlimiting embodiment illustrated in FIG. 6a, the open housing 12 comprises at least one positioning tab 121. In a nonlimiting variant, it comprises three positioning tabs 121. The three positioning tabs 121 are configured to correctly position the open housing 12 relative to the closing element of the housing 13. These positioning tabs 121 are configured for r pass through the positioning orifices 111 of the light source support and engage in the slides 131 of the closing element 13.

[63] In a nonlimiting embodiment illustrated in FIGS. 3b to 6b, the open housing 12 further comprises an interface 122 with the optical element 30. In a nonlimiting variant embodiment, this interface 122 is circular. In the nonlimiting example of the light guide 30, as illustrated in FIG. 3b, one end 30c of the light guide 30 can be inserted into this interface 122. The interface 122 is located opposite the light source 10 so that the end 30c, in particular its flat surface 30a, of the light guide 30 is opposite the source of light 10. Thus, the light rays of the light source 10 are directed into the light guide 30. The interface 122 includes an O-ring 1220 which provides sealing.

[64] In a nonlimiting embodiment illustrated in the figures, the open housing 12 also comprises a connector part 123. As illustrated in FIG. 6b, a secondary connection part 151 of the secondary electrical connection element 15 is inserted into the connector part 123, and configured to cooperate with an external connector (not illustrated) of the motor vehicle which makes it possible to supply the PCBA card.

[65] In a nonlimiting embodiment illustrated in FIG. 6a, the open housing 12 further comprises a positioning housing 126 with a plurality of grooves of 127. As illustrated in FIG. 6c, the positioning housing 126 comprises a central axis Axl perpendicular to the longitudinal direction of the open housing 12. The positioning housing 126 comprises a substantially circular cross section and opens onto the interface 122 and the interior of the open housing 12. The grooves 127 are arranged in the housing 126. As illustrated in FIG. 6b, the positioning housing 126 comprises a flange 1260 in which said grooves 127 are made. Said grooves 127 start from said flange 1260 to open into said housing 126, on the inside of the open housing 12. The positioning housing 126 accommodates the light guide 30, in particular one of its ends 30c which can be inserted in said positioning housing 126. The grooves 127 make it possible to block the positioning pins 300 of the light guide 30.

[66] In a nonlimiting example not illustrated, the positioning housing 126 comprises three grooves 127. In a nonlimiting embodiment, the three grooves 127 are angularly offset by 120 °. In another nonlimiting example not illustrated, it comprises two grooves 127. In a nonlimiting embodiment, the two grooves 127 are angularly offset by 180 °, that is to say they are arranged opposite one another. The fact of angularly shifting the grooves 127 makes it possible to have guide zones 128 in the positioning housing 126 as illustrated in FIG. 6c. As illustrated in FIG. 6c, the guide zones 128 are formed by arcs of a circle. They are located on the inner circumference of the flange 1260. In the nonlimiting embodiment illustrated, there are three guide zones 128, two of which end in a stop 128b. In a nonlimiting embodiment illustrated, an arc 128 is thus offset by 120 ° relative to an adjacent arc.

[67] In a non-limiting embodiment illustrated in FIGS. 1b and 4a, the open housing 12 further comprises a lug for hooking 124 to the housing 3. The lug for hook 124 is configured to hang on the support d hook 310 of the housing 3. As will be seen later, the module luminous 1 is configured to perform a rotational movement and hang at the end of rotation to a second housing 3 of the motor vehicle via its hook tab 124 of its open housing 12. According to a first nonlimiting embodiment illustrated in the FIG. 1b, the attachment tab 124 cooperates with an attachment support 310 of the glass support 31 of the housing 3. In particular, it is clipped onto said attachment support 310. According to a second nonlimiting embodiment illustrated in FIG. FIG. 11b, the attachment tab 124 cooperates with an attachment support 310 of the optical element support 32 of the housing 3. In particular, it is clipped onto said attachment support 310.

[68] In a nonlimiting embodiment illustrated in FIG. 3b, the open housing 12 further comprises means for centering 125 of the light source 10 with the optical element 30.

[69] The secondary electrical connection element 15 is illustrated in FIGS. 6a and 6b. As illustrated, the secondary electrical connection element 15 is connected to the open housing 12. In a nonlimiting embodiment, said open housing 12 is overmolded on the secondary electrical connection element 15. According to the overmolding process, the secondary electrical connection element 15 is placed in an injection mold, then the material of the open housing 12 is injected into the injection mold to obtain the part. This ensures tightness and respects a precise assembly dimension. The secondary electrical connection element 15 is configured to cooperate with the primary electrical connection element 14. In a nonlimiting embodiment, the secondary electrical connection element 15 is a male connector. Having a male connector on the open housing 12 is simpler to manufacture than having a male connector on the light source support 11.

[70] The assembly along an axis X perpendicular to the light source support 11, between the light source support 11 and the open housing 12 is thus easy thanks to the male connector 15 and the female connector 14 seen above. The electrical connection between the male connector 15 and the female connector 14 during assembly between the light source support 11 and the open housing 12 is thus simple to perform.

[71] As illustrated in FIGS. 6a and 6b, the secondary electrical connection element 15 comprises:

a primary connection part 150 with said primary electrical connection element 14, and

- A secondary connection part 151 with the exterior connector of the motor vehicle.

[72] The fact that the secondary connection element 15 allows both a connection with the PCBA card via the primary connection part 150, and a connection with the external connector via the secondary connection part 151 makes it possible not to use of internal electrical connection harness between the light source support 11 and the exterior connector of the motor vehicle which would cause electromagnetic compatibility issues. This avoids electromagnetic compatibility problems. This also avoids having problems positioning the internal electrical connection harness inside the open box 12, once the box is open 12, the light source support 11 and the closure element 13 assembled together. Indeed, in the case of the use of such an internal electrical connection bundle, it would be necessary to have a great length in order to be able to replace the light source 10.

[73] The primary connection part 150 forms the male connector. It comprises two pins 150a, 150b (one positive, the other negative) configured to cooperate respectively with the two pins 14a, 14b of the primary electrical connection element 14. In a nonlimiting embodiment, the two pins 150a, 150b are integrated into the open housing 12 by overmolding. As illustrated in FIG. 6b, the primary connection part 150 extends in a first direction AX. It is in plan contact with the open housing 12 which prevents any deformation and the pins 150a, 150b from moving.

[74] The secondary connection part 151 forms a male connector which is configured to be plugged into a female connector formed (not illustrated) in the exterior connector of the motor vehicle. It includes two pins 151a, 151b (one positive, the other negative). The secondary connection part 151 extends in a second direction AY. The second direction AY makes an angle b with the first direction AX between 45 ° and 135 °. Thanks to this arrangement with an angle b, it is possible to mount the light module 1 between the second housing 3 and the body of the motor vehicle along the X axis, and to disassemble it to replace it when the light device 4 is mounted on the motor vehicle. This also makes it possible to have small dimensions, in particular in width of the light module 1 so that it can be easily integrated into the space between the second housing 3 and the body of the motor vehicle.

[75] In a nonlimiting embodiment illustrated, the angle b is 90 °.

[76] Thus, the first direction AX is perpendicular to the light source support 11 and the second direction AY is parallel to the light source support 11 and to the second housing 3. The fact of having the secondary connection part parallel to the second housing 3 makes it possible to have a connection with the external connector 5 parallel to the second housing 3. The dimensions of the light module 1 can thus be reduced, in particular along the axis X, and the light module 1 takes up less space than if the connection was perpendicular to the second box 3 for example.

[77] As illustrated in FIGS. 4b and 6b, the primary connection part 150 and the secondary connection part 151 are connected together via an elbow 152 which makes it possible to produce the angle b. Thus, the pin 150a of the primary connection part 150 is connected by an elbow to the pin 151a of the secondary connection part 151, and the pin 150b of the primary connection part 150 is connected by an elbow to the pin 151b of the secondary connection part 151.

[78] The assembly by an operator of the light module 1 on the housing 3 of the motor vehicle is carried out as follows with reference to Figures 12a to 12d. In FIGS. 12a to 12d, the second embodiment with the attachment support 310 on the optical element support 32 of the second housing 3 is taken as a nonlimiting example to illustrate said assembly.

[79] In a first step illustrated in Figure 12a, the light module 1 is arranged by the operator between the second housing 3 and the body of the motor vehicle. It rotates it so that it has an angle relative to the longitudinal axis of the second housing 3. The rotation is illustrated by the arrow referenced 60 in the figure.

[80] In a second step illustrated in FIG. 12b, the light module 1 is positioned by the operator so that the grooves 127 of the open housing 12 of the light module 1 are opposite the positioning pins 300 of the housing 3. Then, the operator pushes the light module 1 in translation along an axis (not shown) perpendicular to the longitudinal axis of the second housing 3 so that the positioning pins 300 of the housing 3 are inserted into said grooves 127 of the open housing 12. The light module 1 is thus placed in a first position pl. The light module 1 is thus pre-positioned on the second housing 3. The translation is illustrated by the arrow referenced 61 in the figure.

[81] In a third step illustrated in Figure 12c, the operator turns the light module 1 so that it performs a rotational movement. During this rotation, the positioning pins 300 of the second housing 3 slide along the guide zones 128 of the open housing 12 until it reaches the abutment up to the stops 128b of said guide zones 128. The rotation is illustrated by the arrow referenced 62 in the figure. The stops 128b make it possible to block the end of the rotation.

[82] In a fourth step illustrated in FIG. 12d, the rotation of the light module 1 ends when the hook tab 124 of the open housing 12 engages on the hook support 310 of the second housing 3, and is clipped on said attachment support 310. Thus, the open housing 12 is locked on the second housing 3. Thus, the attachment device formed by the attachment tab 124 and the attachment support 310 makes it possible to prevent unlocking untimely open case 12 when in particular the motor vehicle is moving. The light module 1 is thus hooked to the second housing 3. The light module 1 is thus placed in a second position p2, otherwise called the mounted position.

[83] FIG. 12e thus illustrates the light module 1 which passes from the first position pl to the second position p2. [84] Of course, the description of the invention is not limited to the embodiments described above and to the field described above.

[85] Thus, in another nonlimiting embodiment, said primary electrical connection element 14 is a male connector and said secondary electrical connection element 15 is a female connector.

[86] Thus, in another nonlimiting embodiment, said secondary electrical connection element 15 is bonded to said open housing 12 instead of being molded, in particular its primary connection part 150.

[87] Thus, in another nonlimiting embodiment, the fixing by welding between the closing element 13 and the open housing 12 can be replaced by short fixing screws, for example less than 5 mm. In this other nonlimiting embodiment, it is also possible to provide a seal disposed between the open case 12 and the closing element of the case 13, which makes it possible to ensure a closing of the open case 12 with the closing element of the housing 13 while ensuring a good seal.

[88] Thus, the invention described has in particular the following advantages:

- it allows the light module 1 to be mounted in a limited space,

- It allows to mount / dismount along the X axis said light source 10 with the light source support 11 without having to dismantle the entire light device 4 and this only by means of a screwdriver. The housing 3 thus remains mounted on the motor vehicle,

- it eliminates the use of an electrical connection harness and the problems associated with its use.

Claims

[Claim 1] Light module (1) for a motor vehicle comprising:

- at least one light source (10),

- an open housing (12),

- a closing element (13) for closing said open housing (12),

characterized in that said open housing (12) comprises a positioning housing (126) on an optical element (30), said positioning housing (126) comprising a plurality of grooves (127), and a lug (124 ) on a housing (3) of said motor vehicle comprising said optical element (30) and a window (31) for closing said housing (3), said light module (1) being configured to perform a rotational movement and to hang in end of rotation to said housing (3) via said lug (124) of said open housing (12).

[Claim 2] Light module (1) according to claim 1, wherein said optical element (30) is a light guide.

[Claim 3] Light module (1) according to any one of the preceding claims, according to which said positioning housing (126) comprises two or three grooves (127).

[Claim 4] Light module (1) according to any one of the preceding claims, in which said hooking tab (124) is configured to hang on a hooking support (310) of an element support. optic (32) of said housing (3) of the motor vehicle, or to an attachment bracket (310) of a lens support (33) of said housing (3) of the motor vehicle.

[Claim 5] Housing (3) for a motor vehicle, said housing (3) comprising an optical element (30), characterized in that said housing (3) further comprises:

- an optical element support (32),

- a lens (31) formed by a lens support (33) and a transparent optical part (34),

- an attachment support (310) for an attachment tab (124) of a light module (1), said attachment support (310) being integral with said optical element support (32) or with said support ice (31).

[Claim 6] Housing (3) according to the preceding claim, wherein said optical element (30) comprises positioning pins (300) of a light module (1).

[Claim 7] Housing (3) according to the preceding claim, wherein said optical element (30) is positioned in the center of said positioning pins (300).

[Claim 8] Light device (4) comprising a light module (1) according to any one of the preceding claims 1 to 4 and a housing (3) according to any one of claims 5 to 7. [Claim 9] Light device (4) according to the preceding claim, wherein said light device (4) is a signaling light and / or a projector, or an interior lighting device.