Light device for motor vehicle

Abstract

A lighting device for a motor vehicle. A lighting device (20) comprising an outer wall including a closing lens (21), fixed to a main housing (22), characterized in that it comprises at least one secondary housing (23) positioned on the inner side of the lighting device and fixed to the main housing (22), and in that the fixing of the outer wall including the closing lens (21) is removable so as to allow access to the lighting device (20) from the outside by removing this outer wall when necessary, and in that the fixing of at least one secondary housing (23) to the lighting device (20) is removable so as to allow access to the lighting device from the inside by removing this at least one secondary housing (23) when necessary. Figure for the abbreviation: 5

Description

Title of the invention: Lighting device for motor vehicles

[0001] The present invention relates to a lighting device for a motor vehicle. It also concerns a motor vehicle as such, including such a lighting device. It also relates to a procedure for intervening on such a lighting device.

[0002] Figure 1 represents a motor vehicle 1 according to the prior art. This motor vehicle is equipped with a rear-mounted lighting device 10, which takes the form of a strip extending across the entire width of the motor vehicle, as shown in Figure 2. Such a lighting device has the disadvantage of making any repair operations difficult, since access to its various components is not always easy.

[0003] The object of the invention is to provide a lighting device improving the state of the art, in particular by facilitating after-sales intervention operations.

[0004] To this end, the invention relates to a lighting device comprising an outer wall including a closing glass, fixed to a main housing characterized in that it comprises at least one secondary housing positioned on the inner side of the lighting device and fixed to the main housing, and in that the fixing of the outer wall including a closing glass is removable so as to allow intervention on the lighting device from the outside by removing this outer wall if necessary and in that the fixing of at least one secondary housing on the lighting device is removable so as to allow intervention on the lighting device from the inside by removing this at least one secondary housing if necessary.

[0005] The fixing of the outer wall including a closing glass and / or at least one secondary housing can be watertight.

[0006] The fixing of the outer wall including a closing glass and / or at least one secondary housing may include a UV adhesive.

[0007] The attachment of the outer wall including a closing glass to the main housing may include a groove in the main housing or of the outer wall including a closing glass in which a UV adhesive is positioned and a rib respectively of the outer wall including a closing glass or of the main housing positioned within the groove and the UV adhesive and / or the attachment of at least one secondary housing to the main housing may include a groove in the at least one secondary housing or of the main housing in which a UV adhesive is positioned and a rib respectively of the main housing or of at least one secondary housing positioned within the groove and the UV adhesive.

[0008] The groove may have a horizontal U-shaped cross-section.

[0009] The fixing of the outer wall including a closing glass and / or at least one secondary housing may include screwing by at least one screw.

[0010] The main housing can delimit a first volume including in particular electronic components of the lighting function, and at least one secondary housing can delimit a second volume including in particular optical components of the lighting function.

[0011] The invention also relates to a motor vehicle characterized in that it includes a lighting device as described above, in particular a front and / or rear lighting device.

[0012] The invention also relates to a method of intervention on a lighting device as described above, characterized in that it includes a heating step to dismantle an outer wall comprising a closing glass and / or a secondary housing positioned on the inner side.

[0013] These objects, features and advantages of the present invention will be described in detail in the following description of an embodiment given by way of non-limiting example, with reference to the accompanying figures, among which:

[0014] Fig. 1 is a side view of a motor vehicle according to a prior art.

[0015] Fig. 2 represents a motor vehicle lighting device according to a prior art.

[0016] Fig. 3 schematically represents a perspective view of a lighting device according to one embodiment of the invention.

[0017] Fig. 4 represents a schematic exploded perspective view of the lighting device according to the embodiment of the invention.

[0018] Fig. 5 represents a schematic cross-sectional view of the lighting device according to the embodiment of the invention.

[0019] Fig. 6 represents another perspective view of the right half of the lighting device according to the embodiment of the invention.

[0020] Fig. 7 is another simplified exploded perspective view of the lighting device according to the embodiment of the invention.

[0021] By convention, we will use the adjective "exterior" to designate a part of a lighting device intended to be oriented outwards from a motor vehicle after its installation on a motor vehicle. The exterior part includes, in particular, the closing lens visible from outside the vehicle. We will use the adjective "interior" to designate, on the contrary, a part oriented towards the interior of a motor vehicle, as opposed to an exterior part.

[0022] The concept of the invention consists of proposing a light device 20 that can be disassembled both from its outer face and from its inner face, in order to have easy access to all the components so as to be able to easily carry out any subsequent intervention. sale on the lighting device. This concept applies equally to the rear and front lighting devices of the motor vehicle.

[0023] Figures 3 and 6 show a lighting device 20 according to an embodiment of the invention. It comprises a first outer wall including a closing lens 21, visible from outside the motor vehicle, and through which a beam of light generated by the lighting device escapes. It further comprises a main housing 22 which extends around the entire perimeter of the lighting device and defines a sealed internal volume. It also comprises one or two secondary housings 23 arranged on the inner side of the lighting device. In this embodiment, a right-hand secondary housing and a left-hand secondary housing are provided.

[0024] As shown in Figures 4 and 7, the lighting device is formed by stacking the closing glass 21, the main housing 22 and the secondary housings 23. Between these components, sealing elements 41, 43 are positioned to ensure the sealing of the entire lighting device 20.

[0025] Figure 5 shows a cross-sectional view of the lighting device 20 according to the embodiment of the invention. As shown in this figure, the lighting device 20 comprises a first volume 24 delimited by the closing lens 21 and the main housing 22, and a second volume 25 delimited by the secondary housing(s) 23. Within these volumes are distributed the essential and traditional components for fulfilling the lighting function, namely the electronic components, which can be arranged on one or more printed circuit boards (PCBs), and the optical components, for generating and guiding a light beam capable of illuminating the exterior environment of a motor vehicle through the closing lens 21 of the lighting device. These components are traditional and are not shown. They are distributed within the volumes defined by the previously described architecture of the lighting device.In particular, the first volume may include electronic components for the lighting function, and the second volume may include optical components for the right and left lighting functions respectively.

[0026] According to the invention, the attachment between the closing glass 21, or more generally the outer wall comprising the closing glass, and the main housing 22 is removable, to allow the removal of the closing glass 21 and initial access to the lighting device 20 from the outside. In addition, the attachment between a secondary housing 23 and the main housing 22 is also removable, to allow the removal of a secondary housing 23 and a second access to the lighting device 20 from the inside. This dual access capability allows an operator to easily access all the components of the lighting device to perform any operation, such as repair, replacement, etc.

[0027] Figure 5 illustrates these removable fasteners according to the embodiment of the invention. These fasteners are further distinguished by their sealing function. To achieve this, they combine mechanical fastening by screwing the two parts together with one or more screws, and the application of a sealant to the interface between these two parts. As shown, the seal is achieved by using a UV adhesive, which has the advantage of simultaneously achieving bonding and sealing properties when UV radiation is applied. For this purpose, the first part to be assembled has a groove in which the UV adhesive is placed, and the second part to be assembled has a rib that is positioned in the groove within the UV adhesive.After the UV adhesive is activated, it secures the two parts together by bonding, while ensuring a watertight seal at the interface between the two bonded parts.

[0028] Thus, as shown in [Fig. 5], the main housing 22 includes an outwardly oriented groove 32, the cross-section of which has substantially a horizontal U-shaped profile. A UV adhesive 41 is disposed in this groove 32. The outer wall, which includes the closing glass 21, comprises a rib 31 or finger disposed within the UV adhesive 41 and the groove 32. Similarly, the secondary housing 23 includes an outwardly oriented groove 33, the cross-section of which has substantially a horizontal U-shaped profile. A UV adhesive 43 is disposed in this groove 33. The main housing 22 includes a rib 34 or finger disposed within the UV adhesive 43 and the groove 33.

[0029] Optionally, to reinforce the fastening of the various parts of the lighting device 20, the UV-bonded, watertight fasteners described above are supplemented by screws. For this purpose, one or more screws 51 are used to fasten the outer wall, which includes the closing lens 21. In addition, one or more screws 53 are used to fasten the secondary housing(s) 23.

[0030] These fasteners are removable, allowing the fastened parts to be separated easily and without damage. These fasteners are designed to be removable. To separate the two parts, simply unscrew the optional screws 51 and 53, and heat the relevant UV adhesive 41 and 43 to break its bond.

[0031] Naturally, the invention is not limited to the embodiment described. The lighting device could include any other architecture, provided that it comprises a first removable outer part and a second removable inner part. Furthermore, any equivalent watertight fastening could be implemented. In particular, the groove / rib structures described above could include other cross-sectional shapes and could be reversed between the two interconnected parts.

[0032] The invention also relates to a motor vehicle, which includes a lighting device as described above, in particular a front and / or rear lighting device.

[0033] The invention also relates to a method of intervention on a lighting device as described above, characterized in that it includes a heating step to dismantle an outer wall comprising a closing glass 21 and / or a secondary housing 23 positioned on the inner side.

Claims

Demands

1. A lighting device (20) comprising an outer wall including a closing glass (21), fixed to a main housing (22) characterized in that it comprises at least one secondary housing (23) positioned on the inner side of the lighting device and fixed to the main housing (22), and in that the fixing of the outer wall including a closing glass (21) is removable so as to allow intervention on the lighting device (20) from the outside by removing this outer wall if necessary and in that the fixing of at least one secondary housing (23) on the lighting device (20) is removable so as to allow intervention on the lighting device from the inside by removing this at least one secondary housing (23) if necessary.

2. A light device (20) according to claim 1, characterized in that the attachment of the outer wall comprising a closing glass (21) and / or at least one secondary housing (23) is watertight.

3. A light device (20) according to any one of the preceding claims, characterized in that the attachment of the outer wall comprising a closing glass (21) and / or at least one secondary housing (23) comprises a UV adhesive (41, 43).

4. A lighting device (20) according to any one of the preceding claims, characterized in that the attachment of the outer wall comprising a closing lens (21) to the main housing (22) comprises a groove (32) in the main housing (22) or of the outer wall comprising a closing lens (21) in which a UV adhesive (41) is positioned, and a rib (31) of the outer wall comprising a closing lens (21) or of the main housing (22), respectively, positioned within the groove (32) and the UV adhesive (41), and / or in that the attachment of at least one secondary housing (23) to the main housing (22) comprises a groove (33) in the at least one secondary housing (23) or of the main housing (22) in which a UV adhesive (43) is positioned, and a rib (34) of the main housing (22) or of at least one secondary housing (23), respectively, positioned within the groove (33) and UV glue (43).

5. Light device (20) according to the preceding claim, characterized in that the groove (32, 33) has a U-shaped cross-section lying down.

6. A light device (20) according to any one of the preceding claims, characterized in that the attachment of the outer wall comprising a closing glass (21) and / or at least one secondary housing (23) comprises screwing by at least one screw (51, 53).

7. A lighting device (20) according to any one of the preceding claims, characterized in that the main housing (22) delimits a first volume including in particular electronic components of the lighting function, and in that at least one secondary housing (23) delimits a second volume including in particular optical components of the lighting function.

8. Motor vehicle characterized in that it comprises a lighting device (20) according to any one of the preceding claims, in particular a front and / or rear lighting device (20).

9. A method of intervention on a lighting device (20) according to any one of claims 1 to 7, characterized in that it comprises a heating step to dismantle an outer wall comprising a closing glass (21) and / or a secondary housing (23) positioned on the inner side.

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