Lighting arrangement and motor vehicle with such a lighting arrangement

Abstract

A lighting arrangement for illuminating a motor vehicle interior is proposed, comprising a light source (36) and a fastening element (22, 72), characterized by a contact element (20, 52, 56, 60) and a light-conducting lighting panel (38) with a light coupling region (16) and a light coupling-out region (18), wherein light from the light source (36) can be coupled into the light-conducting lighting panel (38) at the light coupling region (16) and light coupled into the light-conducting lighting panel (38) can be coupled out of the light-conducting lighting panel (38) at the light coupling-out region (18), and wherein the light-conducting lighting panel (38) can be fixed to a support component (32, 46) of a motor vehicle assembly in a first edge region (24) in the transverse or longitudinal direction by means of the fastening element (22, 72) in such a way that the contact element (20, 52, 56,60) rests against a contact area (64) of the motor vehicle assembly. Furthermore, a motor vehicle with such a lighting arrangement (14, 66, 68, 70) is proposed.

Description

[0001] The invention relates to a lighting arrangement for illuminating a motor vehicle interior of a motor vehicle with the features of the preamble of patent claim 1 and a motor vehicle with such a lighting arrangement.

[0002] Lighting arrangements for motor vehicle interior lighting are known in various designs from the prior art.

[0003] Known lighting arrangements typically comprise a housing, a light source arranged in the housing, and a fastening means for securing the housing to a support component of the motor vehicle. An adhesive is typically used as the fastening means. The adhesive is applied over the entire surface of a top side of the housing facing the support component, thereby securing the lighting arrangement to the support component.

[0004] However, the use of adhesive as a fastening means requires that the adhesive be applied over the entire surface of the housing to securely connect the lighting arrangements to the support component. Consequently, once the lighting arrangement has been mounted on the support component, it is impossible or at least difficult to replace.

[0005] The invention is based on the object of providing a lighting arrangement that can be easily assembled, disassembled, and thus replaced. Furthermore, the present invention is an object of providing a motor vehicle with such a lighting arrangement.

[0006] These objects are achieved according to the invention by the lighting arrangement having the features of patent claim 1 and the motor vehicle having the features of patent claim 12.

[0007] According to the invention, a lighting arrangement for illuminating a motor vehicle interior, in particular a reading light, is proposed. The lighting arrangement comprises a light source, a fastening element, a contact element, and a light-conducting illumination panel. The light-conducting illumination panel has a light coupling region and a light output region. In the light coupling region, light from the light source can be coupled into the light-conducting illumination panel. In the light output region, light coupled into the light-conducting illumination panel can be coupled out of the light-conducting illumination panel, in particular into the motor vehicle interior.The light-guiding illumination panel can be fixed to a support component of a motor vehicle assembly by means of the fastening element at least in a first edge region in the transverse or longitudinal direction of extension in such a way that the contact element rests against a contact region of the motor vehicle assembly.

[0008] The core idea of the invention is therefore to provide a fastening element by means of which the light-guiding lighting panel can be fixed to the motor vehicle in a first edge region of the light-guiding lighting panel. To increase the stability of the connection of the light-guiding lighting panel, a contact element is further provided which, when the light-guiding lighting panel is fixed to the support component by means of the fastening element, rests against the contact region of the motor vehicle in such a way that movement of the light-guiding lighting panel, in particular in the region of the contact element, in the direction of the contact region is prevented.

[0009] By means of the fastening element, the light-guiding lighting disc can therefore be secured in a simple manner to the support component by merely lateral fixation, wherein rattling noises which can result from the light-guiding lighting disc striking a motor vehicle element are excluded by providing the contact element in addition to the fastening element.

[0010] The motor vehicle assembly may be a motor vehicle roof.

[0011] The contact area is, for example, an area of the motor vehicle that is different from the supporting component.

[0012] The contact area can be an area of a motor vehicle window.

[0013] In a preferred embodiment of the lighting arrangement according to the invention, the fastening element is a fixed clamp. The fastening element thus prevents any translational or rotational movement of the light-conducting lighting disc relative to the support component.

[0014] The fastener may be made of metal or plastic or comprise metal or plastic.

[0015] In an exemplary embodiment of the lighting arrangement according to the invention, the contact element is arranged in a second edge region of the light-guiding lighting disc opposite the first edge region in the transverse or longitudinal direction of extension, in a third edge region of the light-guiding lighting disc adjacent to the first edge region in the longitudinal or transverse direction of extension and / or in a fourth edge region of the light-guiding lighting disc opposite the third edge region in the longitudinal or transverse direction of extension.

[0016] The contact element has, for example, a position in the transverse or longitudinal direction that differs from the position of the fastening element. Thus, the contact element is, for example, spaced apart from the fastening element, which may in particular also include the contact element resting against the fastening element.

[0017] For example, the contact element and the fastening element are designed as separate components.

[0018] The contact element is, for example, a sealing element. When the lighting arrangement is mounted on the motor vehicle assembly, a cavity existing between the light-conducting lighting pane and the motor vehicle assembly, in particular the motor vehicle pane, can be at least partially laterally delimited or laterally defined by the contact element.

[0019] The contact element can be elastic. This simplifies installation and eliminates rattling noises caused by the contact element striking the vehicle assembly, particularly the vehicle windshield.

[0020] The support element includes, for example, a reinforcement, particularly a metal reinforcement. This increases the stability of the support element.

[0021] The contact element can be formed as a single piece with the light-conducting illumination panel. Thus, no additional assembly steps are required for the contact element.

[0022] For example, the contact element is a plastic injection-molded element that is molded onto the light-conducting lighting disc.

[0023] In an exemplary embodiment of the lighting arrangement according to the invention, the light-conducting lighting panel is at least partially transparent, in particular completely or at least partially transparent, at least in a partial area. If the lighting arrangement is mounted in an area of a motor vehicle window, a transparent area of the motor vehicle window is thus not reduced or at least only slightly reduced.

[0024] In a preferred embodiment of the lighting arrangement according to the invention, the light coupling region is arranged on a first side of the light-conducting lighting disc, which lies in the first edge region.

[0025] The light coupling area can extend over the entire first side of the light-conducting illumination disc.

[0026] The light source is arranged, for example, on a first side of the light-conducting illumination disc, which lies in the first edge region.

[0027] The light source can be directly adjacent to the first side of the light-conducting illumination disc or can be spaced from it by a gap.

[0028] In an exemplary embodiment of the lighting arrangement according to the invention, the light source comprises at least one light-emitting diode (LED), in particular a plurality of LEDs arranged on a printed circuit board.

[0029] For example, the light source includes 2 to 20 LEDs.

[0030] In a preferred embodiment of the lighting arrangement according to the invention, the light source comprises at least one elongated light guide which can be illuminated by means of at least one light source, in particular an LED.

[0031] The elongated light guide extends, for example, parallel to the first side of the light-guiding illumination disc.

[0032] A diffusing element can be arranged between the light source and the light-guiding illumination panel to diffuse the light from the light source. This ensures uniform light distribution into the light-guiding illumination panel.

[0033] The scattering element is formed, for example, in that the first side of the light-conducting layer, in particular in the light coupling region, has a higher roughness than the remaining region of the light-conducting layer.

[0034] The scattering element can be a film which has a higher roughness than the light-guiding illumination disc and covers the first side of the light-guiding layer completely or in the light coupling area.

[0035] The light-guiding lighting disc has, for example, a transverse extension and / or longitudinal extension of a maximum of 300 mm.

[0036] The light-guiding illumination disc can be plate-shaped, i.e. have the shape of a flat body.

[0037] The light-guiding illumination panel, for example, has a thickness of 1 to 25 mm, particularly in the range of 1.2 to 5 mm. A thin panel, approximately 1 mm thick, offers the advantage of a weight-reduced design for the lighting assembly. A thicker illumination panel can contribute significantly to the rigidity of the connection and thus to the stability of the lighting assembly. Thus, a combination of both advantages, and thus a thickness of 2 to 4 mm in particular, represents a compromise between both advantages and disadvantages, while simultaneously ensuring particularly high-quality workmanship during manufacture and installation of the lighting assembly on the motor vehicle assembly.

[0038] The light-conducting lighting disc can be made of glass or plastic.

[0039] For example, the light-guiding illumination panel is made of glass material, for example a glass with a low iron content, a tempered or partially tempered glass, polymethyl methacrylate (PMMA), polycarbonate (PC), cycloolefin polymers (COP) or cycloolefin copolymers (COC) or comprises at least one of the aforementioned materials.

[0040] In an exemplary embodiment of the lighting arrangement according to the invention, the light-guiding lighting disc can be fixed to the support component by means of the fastening element in such a way that the light-guiding lighting disc is clamped between the fastening element and the support component.

[0041] For example, the fastening element can be screwed and / or glued to the support component.

[0042] The fastening element can be clamped and / or glued to the support component.

[0043] The fastening element can be foamed onto the supporting component or foamed into the supporting component. The foamed material can mechanically fix and / or secure the fastening element to the supporting component in a form-fitting and / or force-fitting manner, or it can be materially bonded.

[0044] Depending on the choice of material and type of fastening, the fastening element and the support component are preferably connected to each other in a detachable, in particular refastenable, manner.

[0045] The fastening element is thus, for example, sprayed onto an underside of the carrier component, in particular the motor vehicle window, facing the motor vehicle interior, so that a foam is created in which the light-conducting illumination window is at least partially embedded in the first edge region, which comprises the first side.

[0046] The fastening element can be a foam, in particular a PU foam, which, for example, surrounds the motor vehicle window at least partially on the circumference, or can be at least partially embedded in such a foam.

[0047] For example, the support component itself forms the fastening element. The foam encapsulation thus at least partially embeds the light-conducting illumination panel in the first edge area.

[0048] A sealing element can be provided between the foam coating or the foaming and the light-guiding lighting panel in the edge region, in particular on an upper side of the light-guiding lighting panel facing the motor vehicle window, at least in one region, in particular over the entire extent of the first side.

[0049] For example, the sealing element rests with its underside on an upper side of the light-conducting lighting disc.

[0050] On the upper side, the sealing element can rest against the motor vehicle assembly, in particular the motor vehicle window.

[0051] In an exemplary embodiment of the lighting arrangement according to the invention, the light extraction region is formed by laser engraving on an underside of the light-guiding illumination panel, in particular facing the motor vehicle interior, and / or in the light-guiding illumination panel. The laser engraving refracts light coupled into the light-guiding illumination panel in such a way that, when properly installed on a motor vehicle, it is extracted into the motor vehicle interior.

[0052] In a preferred embodiment of the lighting arrangement according to the invention, the light refraction properties of the light-guiding lighting disc in the light output region are changed by mechanical processing such that light coupled into the light-guiding lighting disc is coupled out of the light-guiding lighting disc in the light output region.

[0053] In an exemplary embodiment of the lighting arrangement according to the invention, the light-guiding lighting disc is printed in such a way that light can be coupled out of the light-guiding lighting disc only in the printed area or only in the non-printed area.

[0054] The light-conducting illumination disc is, for example, roughened in the light-outcoupling region in such a way that light can be coupled out of the light-conducting illumination disc in the light-outcoupling region, but not otherwise.

[0055] The light-guiding illumination panel can be an injection-molded component, wherein an injection mold can include a region with a roughened surface. Thus, the light-outcoupling region is formed directly during the production of the light-guiding illumination panel, without the need for subsequent processing of the light-guiding illumination panel, in particular subsequent roughening of the light-outcoupling region.

[0056] In an exemplary embodiment of the lighting arrangement according to the invention, a film and / or a coating is or are provided adjacent to the light output region, in particular on the underside of the light-conducting lighting panel.

[0057] The coating or film comprises at least two areas whose transparency and / or structuring differ from each other.

[0058] The foil is applied to the light-conducting lighting disc, for example, using a hot stamping process.

[0059] The coating, which has light-refracting and / or light-scattering elements, allows light that is guided in the illumination disc to be coupled out.

[0060] In contrast to printing, coating is usually a material deposition which has a layer thickness of a few µm, in particular less than 1 µm.

[0061] The coating can be arranged partially, in particular in a pattern.

[0062] Light extraction can be achieved, for example, using extraction particles that scatter light and are arranged, for example, in the printing, the coating, or within the extraction film. It would also be possible to use particles that are excited to emit light by the light guided through the illumination panel.

[0063] The light extraction in the light extraction area can take place in different planes, which are arranged in the planar extension of the lighting disc.

[0064] The different planes are, for example, spaced apart from each other in an orthogonal direction to the planar extension, i.e. to a transverse extension plane.

[0065] In a preferred embodiment of the lighting arrangement according to the invention, a lens, in particular a surface lens, is arranged in or on, particularly on the underside, of the light-guiding lighting panel. Thus, light coupled out of the light-guiding lighting panel can be selectively focused, thereby providing a surface light.

[0066] In a preferred embodiment, the lighting arrangement according to the invention comprises a cover arrangement for covering the light source, further electronic components and / or the fastening element.

[0067] The aperture arrangement can be made of an opaque, i.e. non-transparent, plastic.

[0068] The aperture arrangement comprises, for example, two aperture elements.

[0069] The panel assembly can be a multi-component injection-molded part, with an edge region of the panel element being formed from a softer plastic than an inner region. The edge region can thus adapt to the contour of an adjacent region against which the panel assembly rests.

[0070] The aperture assembly can be fixed in a specific position on the vehicle assembly using an adhesive. The adhesive can thus prevent unwanted light leakage.

[0071] In a preferred embodiment, the lighting arrangement according to the invention comprises a control module for controlling the light source.

[0072] The control module is arranged, for example, at a distance from the light source, wherein an electrical connection is provided for connecting the control module to the light source.

[0073] Alternatively, the control module can be located near the light source and connected directly to it.

[0074] Furthermore, the invention relates to a motor vehicle comprising a motor vehicle window and a lighting arrangement as described above.

[0075] The contact element rests, for example, against the vehicle window. The contact area can therefore be an area of the vehicle window, in particular an underside of the vehicle window that faces the vehicle interior.

[0076] The vehicle window can be a component of a vehicle roof. The vehicle assembly can therefore be a vehicle roof.

[0077] For example, the vehicle window is a panoramic roof window.

[0078] The fastening element can fix the light-guiding lighting disc to a support component.

[0079] The carrier component is, for example, the vehicle window and / or an area adjacent to the vehicle window.

[0080] The carrier component is, for example, a part of a foam encapsulation of the motor vehicle window, in particular a PU foam encapsulation.

[0081] The foam can surround the vehicle window in a form-fitting manner at its edge area, in particular completely around the circumference.

[0082] The support component can be a frame element that surrounds the motor vehicle window at least in a partial area, in particular completely.

[0083] The frame element can be fixed to the body, i.e. part of a body of the motor vehicle, in particular the motor vehicle component.

[0084] The support component can be a rail, in particular a guide rail of a shading element, for example a roller blind arrangement or a sliding roof element.

[0085] The support component is, for example, a stiffening element of the vehicle window.

[0086] The support component can be part of a roof lining and / or part of a roof lining connection.

[0087] In an exemplary embodiment of the motor vehicle according to the invention, a transverse extension plane of the light-guiding illumination pane runs parallel to a transverse extension plane of the motor vehicle pane.

[0088] For example, the transverse extension plane extends in the longitudinal direction of the vehicle and the transverse direction of the vehicle.

[0089] Alternatively, the light-guiding illumination disc can be inclined in the direction of the disc center, in particular about a rotation axis extending parallel to the first side, in the direction of the disc.

[0090] The light-guiding illumination panel is spaced apart from the vehicle windshield. The light-guiding illumination panel is not directly in contact with the vehicle windshield at any point, leaving a hollow space between the light-guiding illumination panel and the vehicle windshield.

[0091] Further advantages and advantageous embodiments of the subject matter of the invention can be found in the description, the drawings, and the patent claims. The scope of the invention includes all combinations of at least two features disclosed in the description, the claims, and / or the figures. Thus, each feature mentioned in the description can be part of the claimed subject matter independently of the other features and / or specifications mentioned in the respective context.

[0092] Exemplary embodiments of motor vehicle roofs with panel arrangements according to the invention are shown schematically in the drawing and are explained in more detail in the following description. It shows: Fig. 1 is a bottom view of a portion of a motor vehicle roof and a lighting arrangement arranged on the motor vehicle roof according to a first embodiment of the invention; Fig. 2 a sectional view along line II-II in Fig. 1; Fig. 3 a Fig. 2 corresponding view of a motor vehicle roof with a lighting arrangement according to a second embodiment of the invention; Fig. 4 a Fig. 2 corresponding view of a motor vehicle roof with a lighting arrangement according to a third embodiment of the invention; and Fig. 5 a Fig. 2 corresponding view of a motor vehicle roof with a lighting arrangement according to a fourth embodiment of the invention.

[0093] In the Fig. 1 and Fig. Figure 2 shows a portion of a motor vehicle roof 10 of a motor vehicle, on which a lighting arrangement 14, in particular a reading light, is arranged according to a first embodiment of the invention. A motor vehicle interior 62 can be illuminated by means of the lighting arrangement 14.

[0094] The motor vehicle roof 10 comprises a motor vehicle window 12, which is circumferentially surrounded by a support component 32, in particular a PU foam. The support component 32 fixes the motor vehicle window 12 in the present embodiment of a motor vehicle roof as a fixed glass element, fixed to the body.

[0095] It is also conceivable for the vehicle window to be a sunroof window, i.e., one that is movable relative to the body of the vehicle. In this case, the support component could be part of a frame or a PU foam encapsulation of the vehicle window. Thus, the lighting arrangement is fixed to a movable assembly of the vehicle roof, which in particular comprises the sunroof window and the frame or the PU foam encapsulation.

[0096] The vehicle window 12 is a panoramic roof window. The vehicle window 12 is translucent and is made, in particular, of glass or plastic.

[0097] The lighting arrangement 14 comprises a light source 36, a fastening element 22, a light-conducting lighting disc 38, and a contact element 20. The light-conducting lighting disc 38 comprises a light coupling region 16 and a light coupling region 18.

[0098] The light coupling region 16 is formed on a first side 40 of the light-conducting illumination panel 38 and extends across the entire first side 40. It is also conceivable for the light coupling region 16 to form only a partial region of the first side 40 of the light-conducting illumination panel 38.

[0099] The light source 36 is arranged relative to the light coupling region 16, in particular laterally of the light coupling region 16, such that light from the light source 36 can be coupled through the light coupling region 16 into the light-conducting illumination disk 38.

[0100] At the light output region 18, the light coupled into the light-guiding illumination disc 38 can be coupled out of the light-guiding illumination disc 38. For this purpose, the light refraction properties of the light-guiding illumination disc 38 are modified in the light output region 18 such that the light coupled into the light-guiding illumination disc 38 is refracted such that it is coupled out into the motor vehicle interior 62 when it strikes the light output region 18.

[0101] It is also conceivable, instead of modifying the light refraction properties of the light-guiding illumination disc 38 in the light output region 18, to apply a film and / or a coating to the underside of the light-guiding illumination disc 38, which faces the motor vehicle interior 62, which allows light to be output from the light-guiding illumination disc 38 into the motor vehicle interior 62 only in a defined area.

[0102] The light output region 18 is arranged in a central region of the light-guiding illumination disc 38 in the transverse extension direction and the longitudinal extension direction, which together span a transverse extension plane.

[0103] The light output region 18 is cuboid-shaped. However, the light output region 18 can also have any other geometry.

[0104] By means of the fastening element 22, the light-conducting illumination pane 38 is fixed to the support component 32 in a first edge region in the longitudinal direction such that the contact element 20 rests against a contact region 64 of the motor vehicle, in particular against an underside of the motor vehicle pane 12.

[0105] The fastening element 22 is designed in the form of a retaining bracket and is fixed to the support component 32 in such a way that the light-conducting illumination disc 38 is clamped between the support component 32 and the fastening element 22.

[0106] The fastening element 22 and the light source 36 are covered by a cover assembly 44 so that the fastening element 22 and the light source 36 are not visible when viewed from the vehicle interior 62. The cover assembly 44 is in Fig. 1 is shown transparently for reasons of clarity in areas in which the aperture arrangement covers elements of the lighting arrangement 14.

[0107] As is particularly evident from Fig. 2, the contact element 20 laterally encloses the light-guiding illumination panel 38 in an area exposed in the motor vehicle interior 62, i.e., an area not covered by the panel arrangement 44 and / or the fastening element 22. The area of the light-guiding illumination panel 38 exposed in the motor vehicle interior 62 and enclosed by the contact element consists of a second edge area 26, which lies opposite the first side 40, a third edge area 28, and a fourth edge area 30. The third edge area 28 and the fourth edge area 30 connect a first edge area 24, which encompasses the first side 40, and the second edge area 26 of the light-guiding illumination panel 38 to one another. In a plan view, the contact element 20 has, in particular, a U-shaped profile, the legs of which rest against the panel arrangement 44 at the ends.

[0108] The contact element 20 is made of an elastic material. Thus, the contact element 20 can be easily attached to the light-conducting illumination disc 38.

[0109] The light-guiding illumination disc 38 extends parallel to the motor vehicle window 12. The light-guiding illumination disc 38 is spaced from the motor vehicle window 12 in a direction orthogonal to the transverse extension plane, so that a cavity is formed.

[0110] The cavity is bounded on a first side by the support component 32. On a second side, a third side, and a fourth side, the cavity is bounded by the contact element 20, which extends from the light-conducting illumination panel 38 to the motor vehicle window 12 and thus forms a sealing element. This prevents unwanted deposition of solids or fluids in the cavity, particularly on the upper side of the light-conducting illumination panel 38.

[0111] Fig. 3 shows a motor vehicle roof 58 with a lighting arrangement 66 according to a second embodiment of the invention. The motor vehicle roof 58 corresponds in its design to that shown in the Fig. 1 and Fig. 2. Therefore, the above statements regarding the motor vehicle roof 10 apply accordingly to the motor vehicle roof 58. The lighting arrangement 66 essentially corresponds to the lighting arrangement 14 according to the first embodiment. Therefore, only the distinguishing features will be explained below, with the above statements regarding the lighting arrangement 14 according to the first embodiment otherwise applying accordingly.

[0112] Instead of the contact element 20, the lighting arrangement 66 comprises a contact element 60. The contact element 66 differs from the contact element 20 in its cross-sectional profile. While the contact element 20 has a substantially round cross-sectional profile, the contact element 66 has a rectangular cross-sectional profile. The contact element 66 is embodied here as an injection-molded part or foam-enclosed element, in particular applied directly to the light-conducting lighting panel 38 and in particular fixed thereto.

[0113] Both the contact element 20 and the contact element 66 have a recess, in particular a rectangular recess, on a side facing the light-guiding illumination pane 38 for receiving the light-guiding illumination pane 38 and are each adapted to the geometry of the motor vehicle pane 12 on their side facing the motor vehicle pane 12, i.e. on their upper side, by elastic deformation resulting from contact with the motor vehicle pane 12.

[0114] Fig. 4 shows a motor vehicle roof 42 with a lighting arrangement 68 according to a third embodiment of the invention. The motor vehicle roof 42 and the lighting arrangement 68 according to the third embodiment of the invention essentially correspond to the Fig. 1 and Fig. 2, respectively, according to the first embodiment. Therefore, only the distinguishing features will be explained below, with the above statements regarding the motor vehicle roof 10 and the lighting arrangement 14 otherwise applying.

[0115] In the third embodiment, the support component 46 is a PU foam. When foaming during the manufacture of the motor vehicle roof 42, not only the motor vehicle window 12 but also the light-conducting illumination panel 38 is foamed and thus fixed with a PU foam. Fig. 4, the support component 46 itself forms a fastening element for fastening the light-conducting illumination panel 38 to the body.

[0116] In the cavity between the motor vehicle window 12 and the light-conducting illumination pane 38, a sealing element 48 is provided, which adjoins the carrier component 46 and prevents unwanted entry of the PU foam into the cavity during the foaming process.

[0117] Instead of the contact element 20, the lighting arrangement 68 according to the third embodiment comprises a contact element 52. The contact element 52 has a contact element body with a rectangular cross-sectional profile, which in particular includes rounded corners. On a side facing the light-guiding lighting disc 38, the contact element 52 has a recess, in particular a rectangular one, for receiving the light-guiding lighting disc 38.

[0118] On a side facing the support component 46, the contact element 20 comprises a sealing element 50 for closing the cavity between the motor vehicle window 12 and the light-conducting illumination pane 38. The sealing elements 48 and 50, for example, together form a seal that closes the cavity laterally and circumferentially.

[0119] With the production of the support component 46, the contact element 52 can be formed at the same time.

[0120] In an alternative not shown, the PU foams are formed separately from the light-conducting illumination panel 38, so that the illumination panel 38 is received and fixed in a complementary recess formed in the second edge region 26 of the light-conducting illumination panel 38. The illumination panel 38 can be fixed to the motor vehicle by means of a fixation, preferably a mechanically releasable fixation, for example by clipping using a locking element, at the first edge region 24 to the support component 46.

[0121] Fig. 5 shows a motor vehicle roof 54 with a lighting arrangement 70 according to a fourth embodiment of the invention. The motor vehicle roof 54 corresponds in its design to that shown in Fig.4. Therefore, the above statements regarding the motor vehicle roof 42 apply accordingly to the motor vehicle roof 54. The lighting arrangement 70 essentially corresponds to the lighting arrangement 68 according to the third embodiment. Therefore, only the distinguishing features will be explained below, with the above statements regarding the lighting arrangement 68 according to the third embodiment otherwise applying accordingly.

[0122] In contrast to the third embodiment, in the lighting arrangement 70, the support component 46 itself is not used to fix the light-conducting lighting disc 38. Instead, in the fourth embodiment, the light-conducting lighting disc 38 is attached to the support component 46 via an adhesive layer forming a fastening element 72.

[0123] Instead of the contact element 52, a contact element 56 is provided. The contact element 56 has an elastic contact body 74 and a, in particular, inelastic, cover element 76. The cover element is fixed vertically at the bottom of the contact body 74, in particular clipped to it. This improves the visual appearance of the contact element 56 as viewed from the motor vehicle interior 62. List of reference symbols 10 Vehicle roof 12 vehicle window 14 Lighting arrangement 16 Light coupling area 18 Light output area 20 Investment element 22 Fastening element 24 first edge area 26 second edge area 28 third edge area 30 fourth edge area 32 support component 34 aperture arrangement 36 light source 38 light-guiding lighting disc 40 first page 42 vehicle roof 44 aperture arrangement 46 Support component 48 Sealing element 50 sealing element 52 Investment element 54 vehicle roof 56 Investment element 58 vehicle roof 60 investment element 62 Motor vehicle interior 64 Investment area 66 Lighting arrangement 68 Lighting arrangement 70 Lighting arrangement 72 Fastening element 74 elastic contact body 76 Cover element

Claims

[1] Lighting arrangement for illuminating a motor vehicle interior of a motor vehicle, comprising a light source (36) and a fastening element (22, 72), characterized by a contact element (20, 52, 56, 60) and a light-guiding illumination panel (38) with a light coupling region (16) and a light coupling-out region (18), wherein light from the light source (36) can be coupled into the light-guiding illumination panel (38) at the light coupling region (16) and light coupled into the light-guiding illumination panel (38) can be coupled out of the light-guiding illumination panel (38) at the light coupling-out region (18), and wherein the light-guiding illumination panel (38) can be fixed to a carrier component (32, 46) of a motor vehicle assembly in a first edge region (24) in the transverse or longitudinal direction of extension by means of the fastening element (22, 72) in such a way that the contact element (20, 52, 56, 60) bears against a contact region (64) of the motor vehicle assembly. [2] Lighting arrangement according to claim 1, characterized by that the contact element (20, 52, 56, 60) is arranged in a second edge region (26) of the light-guiding illumination panel (38) opposite the first edge region (24) in the transverse or longitudinal direction of extension, in a third edge region (28) of the light-guiding illumination panel (38) adjacent to the first edge region (24) in the longitudinal or transverse direction of extension and / or in a fourth edge region (30) of the light-guiding illumination panel (38) opposite the third edge region (28) in the longitudinal or transverse direction of extension. [3] Lighting arrangement according to claim 1 or 2, characterized by that the light-conducting illumination panel (38) is at least partially transparent, in particular completely, at least in a partial area. [4] Lighting arrangement according to one of claims 1 to 3, characterized bythat the light source (36) comprises a plurality of LEDs arranged on a circuit board and / or at least one elongated light guide which can be illuminated by means of at least one illuminant. [5] Lighting arrangement according to one of claims 1 to 4, characterized by that a scattering element for scattering the light from the light source (36) is arranged between the light source (36) and the light-conducting illumination disc (38). [6] Lighting arrangement according to one of claims 1 to 5, characterized by that the light-conducting illumination disc (38) is made of glass or plastic, in particular of polymethyl methacrylate, polycarbonate, cycloolefin polymers or cycloolefin copolymers. [7] Lighting arrangement according to one of claims 1 to 6, characterized bythat the light-guiding illumination disc (38) can be fixed to the support component (32, 46) by means of the fastening element (22, 72), in particular can be screwed on, clipped on, clamped on, glued on and / or foamed in, such that the light-guiding illumination disc (38) is clamped between the fastening element (22, 72) and the support component. [8] Lighting arrangement according to one of claims 1 to 6, characterized bythat the light output region (18) is formed by introducing a laser engraving on an underside of the light-guiding illumination panel (38), in particular facing the motor vehicle interior, and / or in the light-guiding illumination panel (38), that the light-guiding illumination panel (38) is printed in such a way that light can be output from the light-guiding illumination panel (38) only in the printed area or the unprinted area, and / or that the light output region (18) is formed by roughening the light-guiding illumination panel (38) in the light output region (18). [9] Lighting arrangement according to one of claims 1 to 8, characterized by that a film and / or coating is provided adjacent to the light output region (18), which film and / or coating has or has regions of different transparency and / or different structuring. [10] Lighting arrangement according to one of claims 1 to 9, characterized by that a lens, in particular a surface lens, is arranged in and / or on the light-conducting illumination disc (38). [11] Lighting arrangement according to one of claims 1 to 10, characterized by a diaphragm arrangement for covering the light source (36) and / or the fastening element (22, 72), which is formed in particular from an opaque plastic. [12] Motor vehicle, comprising a motor vehicle window (12), characterized by a lighting arrangement (14, 66, 68, 70) according to one of claims 1 to 11, wherein the contact element (20, 52, 56, 60) bears against the motor vehicle window (12) and the fastening element (22, 72) fixes the light-conducting lighting window (38) to a carrier component (32, 46). [13] Motor vehicle according to claim 12, characterized by that the carrier component (32, 46) is the motor vehicle window (12) and / or an area adjacent to the motor vehicle window (12). [14] Motor vehicle according to claim 12 or 13, characterized by that a transverse extension plane of the light-guiding illumination disc (38) extends parallel to a transverse extension plane of the motor vehicle window (12) or that the light-guiding illumination disc (38) is slightly inclined in the direction of a center of the motor vehicle window (12) in the direction of the motor vehicle window (12). [15] Motor vehicle according to one of claims 12 to 14, characterized by in that the light-guiding illumination pane (38) is spaced apart from the motor vehicle window (12) such that a cavity is formed which is delimited at the top by the motor vehicle window (12), at the bottom by the light-guiding illumination pane (38) on a first side by a sealing element or the carrier component (32, 46) and / or on at least one further side, in particular on a second side, on a third side and on a fourth side by the contact element (20, 52, 56, 60).

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