LIGHTING DEVICE FOR THE INTERIOR OF A MOTOR VEHICLE

Description

[0001] The invention relates to a lighting device for the interior of a motor vehicle having the features of the preamble of patent claim 1.

[0002] Such a lighting device is known, for example, from DE 10 2017 124 311 A1. Specifically, the lighting device disclosed therein comprises a first, plate-shaped light guide with a light-coupling surface formed on a first flat side. Furthermore, a plurality of light sources are provided for coupling light into an edge surface of the first light guide. A plurality of strip-shaped light guides extend approximately perpendicularly from a rear side of the plate-shaped light guide. The light of an LED strip can be coupled into a free underside of each of the strip-shaped light guides. The light coupled into the strip-shaped light guides can be coupled into a rear side of the plate-shaped light guide via light-coupling surfaces.Thus, a light emission pattern can be generated overall, which consists of a first part generated by the plate-shaped light guide and a second part generated by the band-like light guide.

[0003] A lighting device with the features of the preamble of patent claim 1 is also known from DE 10 2018 103 659 A1. The lighting device has a first housing part made of a first plastic and a second housing part made of a second plastic, which together form a receiving space with a slit-like light outlet opening. Accommodated in the receiving space are a light-generating module with a plurality of light sources and a light guide configured to guide the light emitted by the light sources to the light outlet opening. The light guide is a two-component light guide with a first, transparent light guide section and a second, diffuse light guide section optically connected downstream of the first light guide section. The light-generating module has a light strip with a plurality of light sources designed as light-emitting diodes arranged in series.

[0004] Finally, WO2018 / 149741 A1 describes a lighting device for an interior trim part. The lighting device comprises a light guide strip having a light entry surface extending along a longitudinal direction. A light source strip with a plurality of point-shaped light sources arranged in series along the light entry surface is arranged on the light guide strip. Furthermore, a cover element is provided, which extends along the longitudinal direction of the light guide strip and shields at least one side surface of the light guide strip that differs from the light entry surface. The cover element is connected to the light guide strip via a first fastening element, and the light source strip is connected to the light guide strip via a second fastening element, wherein the light source strip is housed between the cover element and the light guide strip.

[0005] EP 3 663 641 A1 discloses a lighting device for the automotive sector, which has at least two LED light sources facing a plurality of light guides. Furthermore, the light guides are suitable for transmitting and emitting the light from the LED light sources through at least two different illumination surfaces to a front wall of the lighting device. The light guides are arranged next to and adjacent to one another on at least one respective inner wall. Furthermore, the light guides are mechanically and optically separated by blocking elements that prevent the passage of light between the light guides on the at least one inner wall. The blocking elements are opaque partition walls that extend from the rear wall to at least the front wall and completely traverse it.

[0006] FR 3 056 537 A1 discloses a driver assistance system comprising at least one unit for detecting at least one obstacle located in front of or behind the vehicle, and at least one processing unit configured to calculate at least one distance separating the vehicle from the obstacle. It also includes at least one lighting module configured to generate a light signal characteristic of the distance to the obstacle.

[0007] From FR 3 086 368 A1, a lighting device is known which comprises a light source and a light guide which receives the light from the light source in a first region in order to guide it to a second region. The light guide comprises, at a selected location, a transverse groove which extends over almost its entire thickness and across its entire width in order to divide it into two adjacent parts. The lighting device further comprises an opaque plate which has dimensions similar to those of the transverse groove and which is either housed therein to enable illumination of a part of the second region belonging to one of the parts of the light guide, or is unused to enable illumination of the entire second region.

[0008] Furthermore, it can be seen that the lighting of the interior of motor vehicles in the form of so-called ambient lighting is becoming increasingly important for customers.

[0009] Against this background, the present invention is based on the object of providing a lighting device for the interior of a motor vehicle, which offers the prerequisite for animated ambient lighting, which is easily perceptible to an observer and has a compact design.

[0010] This object is achieved by a lighting device having the features of patent claim 1. Advantageous embodiments or further developments of the invention can be found in the dependent claims.

[0011] The invention is based on a lighting device for the interior of a motor vehicle with at least one at least predominantly flat light guide. The light from at least two adjacent light sources can be coupled into the light guide via at least one edge-side light coupling surface and can be coupled out of the light guide again via at least one light coupling surface.

[0012] The invention now proposes that the light guide has at least one elongated material interruption pointing in the light emission direction of the light sources, by which the light guide is divided transversely to the light emission direction into several emission regions arranged next to one another.

[0013] The above features provide a lighting device which offers the basic prerequisite for producing a clearly visible, animated light phenomenon and at the same time allows the lighting device to be designed in a compact manner.

[0014] Under Light emission direction For the purposes of the invention, the direction of light sources is understood to be the direction in which the light intensity of the light source is at its highest. Light-emitting diodes, for example, have a light emission characteristic that encompasses a radiation angle of 180 degrees, with a maximum in light intensity being achieved at 90 degrees. Thus, the light emission direction within the meaning of the invention also lies at approximately 90 degrees.

[0015] Under a flatA light guide within the meaning of the invention is understood to be a light guide whose surface area in at least two perpendicular surface directions is several times greater than its thickness. A flat light guide within the meaning of the invention is understood to mean, in particular, a plate- or strip-like light guide.

[0016] According to a further development of the invention, the light guide is accommodated in a housing, and the light output surface is covered by a decorative part that is at least partially translucent. An opaque element protrudes into or through the at least one material interruption. The opaque element fills, or at least almost fills, a length of the material interruption. A wall is formed by the opaque element.

[0017] In this way, an easily mountable lighting device can be provided that can also serve as a decorative component for the interior of a motor vehicle. The lighting device can be arranged, for example, in an interior panel, such as an interior door panel of the motor vehicle.

[0018] Furthermore, this refinement contributes to achieving an even clearer visual separation between the emission areas of the lighting device, making an animated light appearance even more clearly perceptible. The opaque component prevents, or at least noticeably impedes, the transmission of light emitted from one emission area to an adjacent emission area.

[0019] The translucency of the decorative part can be achieved in different ways. For example, it is conceivable for the decorative part to be provided with material perforations at least in certain areas. The material perforations can be hole-like, for example. However, it is also conceivable for the decorative part to be formed from a translucent material through which the light from the light sources can shine. It is also conceivable for the decorative part to consist of a material that is translucent in at least certain areas and which is provided on its visible side (i.e., facing the interior of a motor vehicle in the assembled state) with a print or film that is translucent in one direction. In the daytime design (when the light sources are switched off), the visible side of the decorative part then displays a colored or patterned surface.In the night design (with activated light sources), however, the film or coating of the decorative part is illuminated by the light of the light sources, thus creating a visible light effect.

[0020] In another embodiment of the invention, it is proposed that the opaque element be molded onto the housing. This offers the advantage of simplified assembly and a reduction in the number of parts.

[0021] Alternatively, it is also conceivable that the opaque element is molded onto the decorative part, whereby the same advantages as mentioned above can be achieved.

[0022] In order to effectively prevent the light emitted from one emission zone from being transmitted to an adjacent emission zone, a further embodiment of the inventive concept proposes that a clear distance between the light guide and the decorative part be bridged or almost bridged in the region of the opaque element. In this way, a type of light chamber is formed above each emission zone, which, viewed in the cross-section of the lighting device, is delimited on the sides by a housing wall and the opaque element or (in the case of multiple opaque elements) by two opaque elements. Towards the top, i.e. in the direction of the light exiting the lighting device, a light chamber is formed by the decorative part.

[0023] According to the invention, the light sources are designed as RGB LEDs. The light guide is a multi-component component comprising a first, strongly light-scattering region and a second, non- or only weakly light-scattering region. Viewed in the light emission direction, the first, strongly light-scattering region of the light guide is arranged downstream of the light sources, followed by the second, non- or only weakly light-scattering region.

[0024] These features offer the advantage that the lighting effects achievable with the lighting device can be displayed in any color with a high degree of homogeneity. RGB light-emitting diodes (RGB LEDs), which have three individual LED chips (red, green, and blue), can produce any color by mixing colors in the RGB color space. They are well known to those skilled in the art and therefore need not be explained further here.

[0025] The light guide, designed as a multi-component component, is preferably a two-component plastic component. It is conceivable that the strongly light-scattering area has a milky, cloudy appearance, while the non- or only weakly light-scattering area can preferably be transparent.

[0026] This arrangement results in the light emitted by the RGB LEDs being initially highly homogenized in the first, highly light-scattering region. Due to the effective homogenization of the emitted light rays by the first, highly light-scattering region of the light guide, the distance between the second, non- or only weakly light-scattering region of the light guide and the RGB LEDs can be kept significantly shorter than would be possible without the first, highly light-scattering region. This, in turn, allows for an enlargement of the second, non- or only weakly light-scattering region and thus the size of the emission area.

[0027] Each emission region has corresponding output coupling structures, which can, for example, be implemented as impurities introduced into the back of the light guide. The light-scattering properties of the first, strongly light-scattering region can, for example, be achieved by volume-scattering impurities introduced into the material of the light guide.

[0028] According to the invention, the light guide is elongated, with the light sources arranged at least along one longitudinal side of the light guide. The light guide can, for example, have a rectangular and / or ribbon-like outline.

[0029] In this way, the lighting device is particularly suitable for installation in a door interior panel, wherein the lighting device can be aligned with its longitudinal extension preferably in the longitudinal direction of the motor vehicle.

[0030] In order to allow even greater variability in the generation of animated light phenomena, it is also conceivable that the light sources are arranged on opposite long sides of the light guide.

[0031] Another possible further development also proposes that the opaque component is designed as a separate component from the housing and the decorative part and is arranged between the housing and the decorative part in a way that is detachable from the lighting device.

[0032] This facilitates any desired adjustment of the light emission characteristics of the lighting device.

[0033] To support an animated light phenomenon, it is very advantageous if the light sources of the lighting device can be or are controlled individually by a control device.

[0034] In this context, it is also conceivable that the control device is connected to the driver assistance system and / or to sensors of a motor vehicle in such a way that animated light phenomena are generated with the lighting device as a function of certain driving conditions, driving maneuvers and / or other recorded sensor data.

[0035] For example, in order to be able to create particularly well-animated light phenomena in the longitudinal direction of the motor vehicle, it is proposed that the light guide be divided into a plurality of emission regions perpendicular to the light emission direction of the light sources. For example, it is conceivable that the lighting device could generate a running light in or opposite to the direction of travel. In other words, in this refinement, the light guide is elongated with a plurality of elongated material interruptions through which said emission regions are formed.

[0036] Finally, the invention also aims to protect a motor vehicle which has at least one lighting device according to the invention.

[0037] Such a motor vehicle can be further developed in that the lighting device is signal-connected to at least one control device, by which the lighting device can be controlled in such a way that animated light phenomena can be generated. In particular, the individual light sources of the lighting device can be controlled individually by the control device.

[0038] Preferred embodiments of the invention are illustrated in the figures and explained in more detail in the following description with reference to the figures. This also makes further features and advantages of the invention clear. The same reference numerals, even in different figures, refer to the same, comparable, or functionally identical components. Corresponding or comparable properties and advantages are achieved even if a repeated description or reference to them is not made. The figures are not, or at least not always, to scale. In some figures, proportions or distances may be exaggerated in order to more clearly emphasize features of an embodiment. If the term "and / or" is used in a list of two or more terms or objects, this may mean that any of the listed terms or objects can be used alone.It can also mean that any combination of two or more of the listed terms or objects can be used.

[0039] They show, schematically Fig. 1 a motor vehicle with lighting devices according to the invention in the door interior panels, Fig. 2 a view of a lighting device according to view II of Fig. 1 , partly broken open and cut, Fig. 3 a sectional view according to section III of Fig. 2 , Fig. 4 a sectional view according to section IV of Fig. 2 , Fig. 5 a lighting device according to a second embodiment, Fig. 6 a sectional view according to section VI from Fig. 5 , Fig. 7 a lighting device according to a further embodiment, Fig. 8 a sectional view according to section VIII from Fig. 7 , Fig. 9 a sectional view according to section IX of Fig. 7, Fig. 10 a representation of yet another embodiment of the lighting device and Fig. 11 a signal diagram to explain a conceivable mode of operation of the lighting device.

[0040] First, the Fig. 1 Reference is made to the drawing. It shows a motor vehicle K with an interior I. The interior I is equipped with interior door panels 2. Lighting devices 1a are embedded in the interior door panels 2.

[0041] The illumination devices 1a are preferably elongated in outline, particularly preferably band- or strip-like. However, the outline can also have other shapes.

[0042] Instead of the lighting devices 1a, it is also conceivable that 2 lighting devices 1b, 1c or 1d are embedded in the door interior panels.

[0043] The lighting devices 1a to 1d will be explained in detail later using the following figures.

[0044] The lighting devices 1a to 1d have a decorative part 10 which faces the interior I of the motor vehicle K and is therefore visible.

[0045] In the Fig. 2 to 4 The lighting device 1a is now shown in detail. It can be clearly seen that the lighting device 1a has a band- or strip-like appearance in outline. The lighting device 1a has long sides with a longitudinal extension 11 and narrow sides with a width b1. The lighting device 1a is further formed by a housing 11, which is covered on the visible side, i.e., toward the interior I, by the decorative part 10. The housing 11 is preferably made of an opaque material.

[0046] A light guide 12 is accommodated in the housing 11. The light guide 12 also preferably has a ribbon-like or strip-like appearance in outline, with two long sides and two narrow sides. The long sides have a longitudinal extension that is only slightly smaller than the previously mentioned longitudinal extension 11. The light guide 12 preferably extends over the entire length of the housing 11.

[0047] Viewed in outline, the light guide 12 has a width b2. The width b2 is selected such that the housing 11 still has enough space to accommodate a circuit board 13 on which a plurality of light sources 14a are arranged.

[0048] The circuit board 13 is arranged in a strip-like manner and extends approximately over the entire length of the light guide 12. The light sources 14a are arranged next to one another at equal intervals on the circuit board 13.

[0049] The circuit board 13 with the light sources 14a extends along a long side of the light guide 12, which thus serves as an edge-side light coupling surface 12e.

[0050] In the present embodiment, the light sources 14a are preferably designed as light-emitting diodes, particularly preferably as RGB light-emitting diodes. RGB light-emitting diodes can emit light of any color in the so-called RGB color space through color mixing.

[0051] Furthermore, it is shown that the light guide 12 has a first region 12a and a second region 12b.

[0052] The first region 12a is a highly light-scattering region. The light-scattering properties of this region are preferably achieved by volume-scattering defects 12d, which are introduced into the first region 12a.

[0053] Light rays L emitted by the light sources 14a, only two of which are shown as examples, initially reach the first region 12a. There, the light rays are strongly scattered. Thus, in the first region 12a, the emitted light rays L are strongly mixed, resulting in an effective homogenization of the light in the first region 12a.

[0054] The light rays L then enter the second region 12b. The second region 12b of the light guide 12 is not or only weakly light-scattering. It can preferably be transparent. It should be noted that the light guide 12 is preferably made of plastic, for example, polymethyl methacrylate (PMMA) or polycarbonate (PC).

[0055] Furthermore, it can be seen that in the second region 12b, a plurality of light-outcoupling structures 12h are arranged transversely, in particular perpendicularly, to a light emission direction LA of the light sources 14a. In a plan view of the outline of the light guide 12, the light-outcoupling structures 12h have an approximately rectangular outline. The light-outcoupling structures 12h can be created, for example, by a rear-side, light-scattering and / or reflective coating of the light guide 12. It is also conceivable for the light-outcoupling structures 12h to be created as a roughened, matte surface during the manufacturing process.

[0056] In a plan view of the outline of the light guide 12, the first, highly reflective region 12a extends over the entire or almost the entire length of the light guide 12. Likewise, the light extraction structures 12h, arranged side by side, extend over the entire or almost the entire length of the light guide 12. Two adjacent light extraction structures 12h are separated from each other only by a material interruption 12c. The material interruptions 12c are elongated and have a length that preferably approximately corresponds to a length l2 of the light extraction structures 12h. The material interruptions 12c are preferably slit-like.

[0057] They form an important component of the present invention. They are also incorporated into the light guide 12 during its manufacturing process, preferably during its injection molding process.

[0058] The light guide 12 is thus a multi-component component, preferably a two-component component, consisting of the first, strongly light-scattering region 12a and the second, non- or only weakly light-scattering region 12b. Due to manufacturing reasons, the regions 12a and 12b are thus integrally connected to one another (by a material bond).

[0059] The light output structures 12h serve to deflect coupled light rays L toward a light output surface 12f, from which the light rays L are then output toward the interior I. The light rays L pass through the translucent decorative part 10.

[0060] In the exemplary embodiment, the translucency of the decorative part 10 is formed by a translucent base body 10a (e.g., plastic, preferably transparent), which is covered by an equally translucent print 10b. The print 10b is preferably translucent only in one direction, i.e., in the direction of the light rays L emerging from the lighting device 1a.

[0061] The light guide 12 has a thickness d which is smaller than the thickness of the housing 11. This creates a slight distance a between the light guide 12 and the decorative part 10 (see also Fig. 3 ). The distance a leads to an increase in the homogeneity of the light emission of the lighting device 1a.

[0062] Let's return to the material interruptions 12c. These form interfaces (optical fiber material / air) within the second region 12b of the optical fiber 12, at which total internal reflection of the light rays L entering the second region 12b can occur. This is illustrated by the first, left-hand material interruption 12c. As can be seen, the material interruptions 12c are aligned parallel to one another. Furthermore, the material interruptions 12c run parallel to the light emission direction LA of the light sources 14a.

[0063] In this way, a radiation region 12g is formed between two adjacent material interruptions 12c or between a material interruption 12c and the housing 11.

[0064] The material interruptions 12c prevent or at least impede light exchange between the emission regions 12g. In other words, the material interruptions 12c enable the creation of clearly defined emission regions 12g in the light guide 12. Each light source 14a is assigned exactly one emission region 12g. In other words, viewed in the light emission direction LA of a light source 14a, exactly one emission region 12g is arranged downstream of the light source 14a.

[0065] Such a clear definition of emission areas 12g is of great advantage when the light sources 14a can be controlled individually, or are controlled individually. Thus, depending on the control of a light source 14a, primarily only the emission area 12g that is assigned to only one of the light sources 14a can be illuminated.

[0066] In this context, it should be mentioned that the first, strongly light-scattering region 12a primarily serves to sufficiently mix the light color components (red, green, blue) emitted by a light source 14a, so that a desired color can be homogeneously generated in the first region 12a and subsequently coupled out in the second region 12b.

[0067] In this way, the lighting device 1a can, for example, be used to generate a clearly visible running light directed in the longitudinal extension l1, in which the radiation areas 12g light up sequentially one after the other.

[0068] Based on the Figs. 5 and 6A second exemplary embodiment of a lighting device 1b will now be explained in more detail. The lighting device 1b differs from the previous exemplary embodiment in that an additional opaque element 15 extends through or into the material interruptions 12c. Each opaque element 15 at least substantially fills a length of the material interruption 12c. In the region of an opaque element 15, the distance a between the light guide 12 and the decorative part 10 is bridged or at least substantially bridged.

[0069] In this way, a type of light chamber is formed above the emission areas 12g, which are separated from one another in terms of light technology in the longitudinal extension l1 of the lighting device 1b in such a way that a light transfer LÜ between the light chambers is prevented or at least almost prevented.

[0070] This can lead to even better visualization of animated light phenomena.

[0071] Deviating from the exemplary embodiments already presented, it is conceivable for a lighting device 1a or 1b according to the invention to also have more or fewer emission regions 12g or light chambers. However, a lighting device 1a or 1b has at least two emission regions 12g, which are separated from one another by a material interruption 12c.

[0072] From the Fig. 6 It becomes clear that the opaque element 15 is integrally connected to the rear wall of the housing 11, i.e., is molded onto it. The opaque elements 15 extend vertically upward from the rear wall of the housing 11 to the decorative part 10. A distance a between the light guide 12 and the decorative part 10 is thus bridged, or at least substantially bridged.

[0073] Based on the Fig. 7 to 9 A further exemplary embodiment of an illumination device 1c according to the invention is described. In contrast to the previous exemplary embodiment, the illumination device 1c has the following differences: Firstly, a light guide 12' is provided which has only a non- or only weakly light-scattering region. Furthermore, in this exemplary embodiment, light sources 14b are provided which emit monochrome, i.e. single-colored light. The light sources 14b are preferably designed as light-emitting diodes, particularly preferably as light-emitting diodes emitting white light. Since no multicolored light is emitted by the light sources 14b, the downstream connection of a strongly scattering region (compare region 12a in Fig. 2 ) not required.

[0074] Furthermore, it should be noted that in this embodiment, the opaque elements 15 are integrally connected to the decorative part 10, from which they extend in a rib-like manner in the direction of the light guide 12' and project into or through the material interruptions 12c. In this case, a clear distance a between the light guide 12' and the decorative part 10 is completely bridged in the area of ​​the opaque elements 15 (see Fig. 9 ).

[0075] Fig. 10 shows a highly simplified outline view of yet another embodiment of a lighting device 1d. As a significant difference from the previous embodiments, in the lighting device 1d, strip-like circuit boards 13 with light sources 14a or 14b are arranged on both opposite longitudinal sides of a light guide 12".

[0076] When using light sources 14a (as in the first embodiment), a first, strongly light-scattering area (similar to area 12a in Fig. 2 ). In this case, the 12" light guide has two strongly scattering areas along the edges and a central area that does not or almost does not scatter light (not shown in detail).

[0077] When using monochrome light sources 14b, however, the light guide 12" is formed only by a region with non- or almost non-light-scattering properties. Preferably, the light guide 12" is then transparent.

[0078] In any case, the light guide 12" also has material interruptions 12c (only indicated as a line), which are arranged and designed in a manner comparable to the material interruptions 12c of the light guides 12 or 12'. Radiation areas 12g are also formed between the material interruptions 12c.

[0079] The existing material interruptions 12d of the lighting device 1d can in turn preferably be interspersed with opaque elements, comparable to the translucent elements 15 of the lighting devices 1b and 1c.

[0080] Finally, the Fig. 11It should be noted that the lighting devices 1a to 1d according to the invention can be signal-connected to at least one control device 16. The control device 16 can be an integral component of the lighting device 1a to 1d. However, it is also conceivable for the control device 16 to be installed as a separate component in the motor vehicle K.

[0081] The control device 16 can in turn be connected in terms of signal technology to driver assistance systems 17 and / or to a vehicle sensor system 18, for example to wheel speed sensors, brake and / or accelerator pedal sensors, inclination sensors, yaw angle sensors and the like.

[0082] In this way, it is possible for the lighting device 1a to 1d to be controlled depending on a detected driving condition, a detected driving maneuver, or the like. For example, it is conceivable that when the accelerator pedal is actuated, i.e., during an acceleration process, the lighting device (1a to 1d) is controlled in such a way that the light sources (14a, 14b) are activated one after the other, generating a running light opposite to the direction of travel. The speed of the running light can be varied depending on the magnitude of the acceleration.

[0083] Similarly, it is conceivable to generate a running light pointing in the opposite direction of travel when the brake pedal is pressed, i.e., during braking. Here, too, the speed of the running light can be varied depending on the degree of braking deceleration. List of reference symbols

[0084] 1a-1d Lighting device 2 Door interior panel 10 decorative part 10a translucent base body 10b Oppression 11 Housing 12, 12' light guide 12a first area 12b second area 12c Material interruption 12d volume-scattering defects 12e Light coupling surface 12f Light output surface 12g Radiation areas 12h Light decoupling structure 13 circuit board 14a Light sources, RGB LEDs 14b Light sources, light-emitting diodes 15 opaque element 16 Control device 17 Driver assistance systems 18 Vehicle sensors a clear distance I2 Longitudinal extension b1. b2 Width d thickness I Interior K motor vehicle LA Light emission direction LÜ Light transmission L light rays I1 Longitudinal extension

Claims

1. Lighting device (1a-1d) for the interior (I) of a motor vehicle (K), comprising at least one at least predominantly flat light guide (12, 12'), into which light (L) from at least two adjacently arranged light sources (14a, 14b) can be coupled via at least one edge-side light in-coupling surface (12e) and can be coupled out of the light guide (12, 12') again via at least one light out-coupling surface (12f), wherein the light guide (12, 12') is elongate and the light sources (14a, 14b) are arranged at least along one longitudinal side of the light guide (12, 12'), characterized in that the light guide (12, 12') comprises at least one elongate material interruption (12c) pointing in the light emission direction (LA) of the light sources (14a, 14b), by means of which interruption the light guide (12, 12') is divided transversely to the light emission direction (LA) into a plurality of adjacently arranged emission regions (12g), wherein the light sources (14a) are designed as RGB light-emitting diodes and the light guide (12) is designed as a multicomponent constituent part which comprises a first, strongly light-scattering region (12a) and a second, non- or only weakly light-scattering region (12b), wherein, when viewed in the light emission direction (LA), the first, strongly light-scattering region (12a) and then the second, non- or only weakly light-scattering region (12b) are arranged downstream of the light sources (14a).

2. Lighting device (1b, 1c, 1d) according to claim 1, characterized in that the light guide (12, 12') is accommodated in a housing (11) and the light out-coupling surface (12f) is covered by a decorative part (10) which is translucent at least in regions, wherein an opaque element (15) projects into or through the at least one material interruption (12c) and the opaque element (15) at least predominantly fills a length of the material interruption (12c), wherein a wall is formed by the opaque element (15).

3. Lighting device (1b) according to claim 2, characterized in that the opaque element (15) is integrally formed on the housing (11).

4. Lighting device (1c) according to claim 2, characterized in that the opaque element (15) is integrally formed on the decorative part (10).

5. Lighting device (1b, 1c, 1d) according to any of the preceding claims 2 - 4, characterized in that, in the region of the opaque element (15), a clear distance (a) between the light guide (12, 12') and the decorative part (10) is bridged or almost bridged by said opaque element.

6. Lighting device (1d) according to any of the preceding claims, characterized in that the light sources (14a, 14b) are arranged on opposite longitudinal sides of the light guide (12, 12').

7. Lighting device according to any of the preceding claims 2 to 6, characterized in that the opaque element is designed as a constituent part which is separate from the housing (11) and the decorative part (10) and is arranged between the housing (11) and the decorative part (10) so as to be detachable from the lighting device.

8. Lighting device (1a-1d) according to any of the preceding claims, characterized in that the light sources (14a, 14b) can be individually controlled by a control device (16).

9. Lighting device (1a-1d) according to any of the preceding claims, characterized in that the light guide (12, 12') is divided into a plurality of emission regions (12g) transversely to the light emission direction (LA) of the light sources (14a, 14b).

10. Motor vehicle (K), characterized by at least one lighting device (1a-1d) according to any of the preceding claims.

11. Motor vehicle (K) according to claim 10, characterized in that the lighting device (1a-1d) is in signaling connection with at least one control device (16), by means of which the lighting device (1a-1d) can be controlled in such a way that animated light phenomena can be generated by it.