DE102017128896A1 - Arrangement for illuminating the interior of a motor vehicle and motor vehicle with such an arrangement - Google Patents

Abstract

The invention relates to an arrangement for illuminating the interior of a motor vehicle, comprising a arranged in the interior of the motor vehicle light source for emitting light and for illuminating the interior. The motor vehicle preferably has a retractable convertible top (8). At least one of the interior of the motor vehicle facing portion of a headliner has an active light emitting flat or elongated element, which forms at least part of the light source for illuminating the interior and emits light over its surface or its length. It is also proposed that the at least one light source (18, 20) is arranged in the interior of the motor vehicle such that the light emitted by it hits the headliner of the motor vehicle, which illuminates the interior as an indirect light source.

Description

The present invention relates to an arrangement for illuminating the interior of a motor vehicle, comprising at least one arranged in the interior of the motor vehicle light source for emitting light and for illuminating the interior. This is preferably a motor vehicle equipped with a retractable convertible top.

In the following explanations will be discussed in particular on motor vehicles, which are equipped with a retractable convertible top, and the illumination of the interior of such convertibles. However, the invention can also be used to illuminate the interior of any motor vehicle, especially those with a fixed roof. The following explanations thus also apply to fixed roof vehicles in a corresponding manner.

In particular, the illumination of the interior of a motor vehicle may comprise an ambient light which, while driving, effects illumination of large areas of the interior in any color of relatively low brightness. In addition, the lighting may comprise vehicle interior lighting which, when the vehicle is at a standstill (for example when the door opener is actuated or when the doors are opened), also illuminates the interior in a large area but with relatively high brightness, preferably with white light. Furthermore, the illumination of the interior may include reading lights which illuminate a relatively narrow space with relatively bright white light.

According to the current state of the art, it is very dark in convertibles with the roof down in the interior and it creates a constricted, cave-like impression. Due to the peculiarity of a convertible top, in particular the mobility for opening and closing and fabric covering the flexibility of the headliner, it is in the prior art so that active light sources for interior lighting are mainly mounted on fixed parts in the interior, for example. On the frame of the windscreen, an inside rearview mirror or in the footwell. Reasons why the interior caves are on the one hand, the relatively small rear window and missing light-emitting elements in the headliner of the convertible top. The rear window must be made relatively small, because it is usually made of glass nowadays and therefore can not be folded when opening the top and stowing in a top compartment, and because in the top compartment for the folded-cab roof only relatively little space is available. Luminous elements for interior lighting are not on the convertible top itself, but at best arranged on fixed components next to it, so that the interior facing the inside of the convertible top acts as a large dark area.

Occasionally, it is also known in the art to mount active light sources for interior lighting, in particular reading lights, on the hood itself. However, this has the disadvantage that they "hang" on the hood and have negative effects in terms of weight, space and kinematics on the overall system of the convertible top.

Vehicle interior lights are currently equipped with only a few intelligent functions in the prior art. In most cases, the scope of functions is limited to simple switching or dimming and differently colored light according to the individual wishes / preferences of the driver of the motor vehicle. A coupling to certain functions in the vehicle takes place only rarely and is usually limited to comfort / well-being functions.

Currently known arrangements which generate an ambient light in the vehicle interior use lighting systems which generate shadow gaps by means of deflecting the light. This requires a higher space requirement in the vehicle. Due to the required space, the use of these known arrangements is severely limited. In particular, use in the field of a convertible top is not possible.

Based on the described prior art, the present invention seeks to design an arrangement for interior lighting of the type mentioned in such a way and further that it provides a brighter and more homely interior.

To solve this problem is proposed starting from the arrangement for interior lighting of the type mentioned that at least one of the interior of the motor vehicle facing portion of the convertible top has a light-emitting planar or elongated element which forms at least a portion of the at least one light source for illuminating the interior and emitting light over its area or length. The light-emitting area or elongated element preferably emits light actively. Alternatively, it is proposed that the at least one light source is arranged and aligned in the interior of the motor vehicle such that the light emitted by the at least one light source strikes at least a portion of the convertible top facing the interior of the motor vehicle and at least that portion of the convertible top forms part of the convertible top Arrangement for lighting the interior forms and is designed to illuminate the interior of the motor vehicle as an indirect light source. Thus, the present invention proposes a concept in which the headliner or other moving parts of the convertible top, for example a roof cap, a roof frame, a linkage, brackets, etc., actively or passively emit light into the interior. Due to the actively or passively illuminated areas of the convertible top, the cave effect can be specifically counteracted.

The concepts described here make the interior brighter and more homely. It is proposed that at least part of the interior facing the inside of the convertible top and possibly other convertible-specific components are illuminated so that the illuminated parts in the interior of the motor vehicle passively lights, or that at least a part of the interior facing the inside of the convertible top and below Cause other convertible-specific components are provided with elongated and / or planar active luminous elements that emit light. In addition to light and logo projection on the headliner, luminous fabrics are used. Furthermore, ambient lighting is achieved by targeted light guidance by means of light projection and by the use of black light (UV light).

• Zum aktiven Lichtaussenden in den Innenraum:
  • - Faserbasierende Lichtleiter, in die an mindestens einem Ende Licht eingekoppelt und über die Länge des Lichtleiters in den Innenraum ausgekoppelt wird.
  • - Leuchtende Stoffe mit denen eine zum Innenraum gewandte Innenseite des Dachhimmels bezogen ist, die auf verschiedene Arten zum Leuchten gebracht werden können und Licht in Richtung des Innenraums aussenden. Solche Stoffe werden bspw. von der Fa. Grado Zero Espace S.r.l., Montelupo Fiorentino (FI), Italien für Kleidungsstücke unter der Bezeichnung „Luciferas“, „LQ Jacket“ und „S1 Sailing Suit“ vertrieben.
  • - Organische Leuchtdioden (organic light emitting diodes, OLEDs), die in eine nahezu beliebige Flächenform gebracht werden können und großflächig Licht aussenden.
  • - Anordnen von faserbasierenden Lichtleitern, leuchtenden Stoffen oder organischen Leuchtdioden hinter einer Zwischenschicht die zumindest teilweise lichtdurchlässige ausgebildet ist. In der Zwischenschicht können lichtdurchlässige Bereiche auch in einem Muster angeordnet sein, das von den dahinter befindlichen aktiv Licht aussendenden Elementen zum Leuchten gebracht oder beleuchtet werden kann, so dass auf diese Weise ein leuchtendes Muster erzeugt werden kann. Die aktiv Licht aussendenden Elemente sind hinter der Zwischenschicht versteckt.
• Zum passiven Lichtaussenden, bspw. mittels Projektion von Licht auf den Dachhimmel, der dieses in den Innenraum umlenkt:
  • - MEMS (microelectromechanical systems) basierte Systeme mit einfarbigen bzw. mehrere LASER-Dioden. Ein Projektor kann einen Mikrospiegelaktor umfassen. Der Mikrospiegelaktor kann als ein Mikroscanner oder als ein Flächenlichtmodulator ausgebildet sein. Bei einem Mikroscanner wird ein stark kollimierter Lichtstrahl sehr schnell über die Projektionsfläche bewegt, so für das menschliche Auge der Eindruck entsteht, auf der Projektionsfläche werde eine Projektion abgebildet. Ein Flächenlichtmodulator umfasst eine Vielzahl von einzeln ansteuerbaren Mikrospiegeln, die auftreffendes Licht abhängig von ihrer Ansteuerung und der daraus resultierenden Ausrichtung gezielt zur Erzeugung einer gewünschten Projektion auf der Projektionsfläche umlenken können.
  • - Mikrooptiken zum Bündeln und Umlenken des von Lichtquellen ausgesandten Lichts zur Erzeugung einer gewünschten Projektion am Dachhimmel des Cabrioverdecks. Solche Mikrooptiken wurden von Fraunhofer IOF, Jena, Deutschland entwickelt (vgl. http://www.iof.fraunhofer.de/de/geschaeftsfelder/optis che-komponenten-und-systeme/mikrooptikmodule/komplexe-mikrooptische-module.html)
  • - Prismenoptiken zur Realisierung einer Kaleidoskopartigen Projektion an dem Dachhimmels des Cabrioverdecks.

For the lighting of the headliner different technologies can be used, as shown in the following examples:

• For active light emission into the interior:
  • - Fiber-based light guide, is coupled to the light at at least one end and coupled over the length of the light guide into the interior.
  • - Luminous fabrics with which an interior facing the inside of the headliner is related, which can be lit in various ways and emit light in the direction of the interior. Such fabrics are marketed, for example, by the company Grado Zero Espace Srl, Montelupo Fiorentino (FI), Italy for garments under the name "Luciferas", "LQ Jacket" and "S1 Sailing Suit".
  • - Organic light emitting diodes (OLEDs), which can be brought into almost any surface shape and emit light over a large area.
  • - Arranging fiber-based light guides, luminous materials or organic light-emitting diodes behind an intermediate layer which is at least partially transparent. In the intermediate layer, translucent areas can also be arranged in a pattern which can be illuminated or illuminated by the active light-emitting elements located behind it, so that a luminous pattern can be generated in this way. The active light emitting elements are hidden behind the intermediate layer.
• For passive light emission, for example by means of projection of light on the headliner, which deflects this into the interior:
  • - MEMS (microelectromechanical systems) based systems with monochrome or multiple LASER diodes. A projector may include a micro-mirror actuator. The micromirror actuator may be designed as a microscanner or as a surface light modulator. In a microscanner, a strongly collimated light beam is moved very quickly over the projection surface, so that the impression is created on the human eye that a projection is projected on the projection surface. A surface light modulator comprises a plurality of individually controllable micromirrors, which can redirect incident light depending on their control and the resulting alignment specifically to produce a desired projection on the projection surface.
  • - Micro-optics for bundling and redirecting the light emitted by light sources to produce a desired projection on the headliner of the convertible top. Such micro-optics were developed by Fraunhofer IOF, Jena, Germany (see http://www.iof.fraunhofer.de/de/geschaeftsfelder/optis che-components-and-systems / micro-optic modules / complex-micro-optical-modules.html)
  • - Prismatic optics for the realization of a Kaleidoskopartigen projection on the headliner of the convertible top.

With regard to the active light-emitting elements on the headliner is proposed according to a preferred embodiment of the invention that the actively illuminating, planar element is formed as an electroluminescent film comprising a layer of light-emitting phosphor, such as phosphorus, which is arranged between two thin electrode layers , Wherein the electrode layer facing away from the interior of the motor vehicle is impermeable to light, preferably reflective, and the electrode layer directed toward the interior is made light-permeable. The thicknesses of the layers are in the range of 1/10 - 1 μm (10 ^-6 m). The electroluminescent film is attached at least to a portion of the headliner, and the electrode layers are exposed to an alternating voltage for emitting light (so-called AC thin-film electroluminescence). This stimulates the phosphor, emit electromagnetic radiation in the form of visible light. The light is not coherent and is emitted in the manner of a Lambertian radiator in all spatial directions. By the rear opaque, preferably reflective electrode layer, the light is directed into the interior of the motor vehicle. In this way, large-area lighting areas can be generated on the headliner, which effectively counteracts a cave effect. The flat element is robust, flexible and flexible and can be opened together with the soft top and stowed in a convertible top compartment.

According to another preferred embodiment of the invention, the planar element is formed as an electroluminescent substance comprising a layer of light-emitting phosphor disposed between two thin electrode layers, and a carrier material made of material on which the three layers are spread, wherein the electroluminescent Fabric facing away from the interior of the fabric material is mounted at least on a portion of the headliner and the electrode layers are exposed to the emission of light with an alternating voltage. Again, the phosphor is excited by the applied AC voltage to emit electromagnetic radiation in the form of visible light. The light is not coherent and is emitted in the manner of a Lambertian radiator in all spatial directions. By the rear opaque, preferably reflective support layer or by the rear opaque, preferably reflective electrode layer, the light is directed into the interior of the motor vehicle. In this way, large-area lighting areas can be generated on the headliner, which effectively counteracts a cave effect. The flat element is robust, flexible and flexible and can be opened together with the soft top and stowed in a convertible top compartment.

According to yet another advantageous embodiment of the invention, the sheet-like element is formed as a woven fabric in the weave structure optical fibers made of plastic or glass are used, wherein the woven fabric is mounted at least on a portion of the headliner and for emitting light to at least one End of the optical fibers light at least one light source couples. It is conceivable that the fibers have an inner core made of acrylic plastic or glass and a sheathing with a lower refractive index than acrylic plastic or glass. The sheath is preferably made of a fluorinated polymer (so-called fluoropolymer), e.g. Polytetrafluoroethene (PTFE). In order to achieve better flexibility of the optical fiber, this is preferably made of plastic. However, if a particularly high flexibility of the optical fibers is not required, for example because the motor vehicle has a fixed roof or the optical fibers run parallel to the folds of a convertible top when folded, the optical fibers can also be made of glass. At the ends of the optical fibers, light is coupled in and propagated by total reflection along the length of the fibers. Through specific measures for coupling light out of the fiber, light can be coupled out at any point, preferably along the entire longitudinal extent of the fiber, through the sheathing in order to illuminate the interior. It is conceivable to replace only a few warp and / or weft threads of the weave structure by optical fibers. As a result, desired luminous patterns and structures can be realized in a targeted manner. For very tightly woven optical fibers results in a rather flat lighting. When the distances of the optical fibers are larger, a more subtle ambiance is created. Different weaving techniques allow many different patterns to be achieved. Furthermore, it would be conceivable to tension the optical fibers in a similar manner as in a weaving board, and additionally to clamp them in the fabric.

According to a preferred embodiment, it is proposed that a layer of fluorescent material is applied to the fabric woven with the optical fibers. This fluorescent material is locally excited by the light emitted from the optical fibers to emit light. In this case, the decoupled light can be UV radiation which is not or hardly visible to the human eye and which excites the fluorescent material for emitting visible light. The intensity of illumination can be dictated by the number and weave of the optical fibers in the woven fabric. It can also be used different fluorescent materials that emit light of different colors.

Particularly preferably, a mask made of a substantially light-impermeable material is applied to the layer of fluorescent material with local light-transmitting regions forming a pattern. In this way, patterns can be realized that can not be represented in conventional weaving technology.

According to another advantageous embodiment of the invention, it is proposed that the planar element comprises at least one organic light-emitting diode (OLED), which is attached at least to a partial region of a front roof cap and / or a side roof frame of a convertible top. Due to the flexibility of the OLEDs to some extent, it would even be conceivable to arrange OLEDs inside the headliner, so that they are folded when folding the convertible top in the top compartment. The OLEDs allow almost any bright pattern or structure to be realized on the headliner. The OLEDs can also emit light of different colors when appropriately controlled.

According to yet another advantageous development of the invention, it is proposed that the elongate element arranged on the subregion of the headliner, which faces the interior of the motor vehicle, comprises active light-emitting elements comprising a plurality of light guides. In a convertible top these are preferably attached to structural elements of the convertible top, in particular to a front roof cap, side roof frame, a bow or a part thereof. Light from light sources is coupled into the optical fibers, and the optical fibers couple the coupled-in light over their entire longitudinal extent in the direction of the interior of the motor vehicle. An attachment of the light guide to the stable structural elements of the convertible top has the advantage that they are not bent and damaged when opening and closing the hood. With the elongated optical fibers, the contours of the hood can be highlighted and emphasized especially at night. In addition, the cavernous impression is eliminated. At at least one end of the light guide, light is coupled in from light sources and coupled out over the longitudinal extension of the light guide.

It would also be conceivable that the optical fibers, which are arranged in the region of the bows or other structural elements of the convertible top, couple the coupled-out light into an optical film (for example with microstructures or a retroreflective film) which extends between the bows. The laterally coupled into the film light is coupled over the entire surface extension of the film from this. This creates a large illuminated area that illuminates the interior of the vehicle.

With regard to the passively luminous headliner, which is illuminated by light sources in the interior, subsequent developments are proposed. Advantageously, the at least one light source which emits light in the direction of the headliner is arranged in headrests, in seats and / or in columns (for example A or C pillars) of the motor vehicle. Here is the A-pillar between the windshield and the front doors, the B-pillar between the front and rear doors in a convertible is usually not available, and the C-pillar is located between the rearmost doors (in the convertible so the Front doors) and the rear window. When arranging the light sources in the interior of the vehicle, care must be taken that in the beam path of the emitted light on the way to the headliner there are no other components of the vehicle or passengers which could shade the light.

According to an advantageous refinement, it is proposed that at least one subarea of the headliner has a two-dimensional pattern or a three-dimensional structure, which reflects incident light locally with different intensities and in different directions as a function of the angle of incidence. Preferably, the pattern is formed as a polygonal pattern or the structure as a polygonal structure. This pattern or structure reflects the light with different intensity and depending on the angle of incidence in different directions. This creates an illuminated polygonal pattern or illuminated polygonal structure with random light-shadow distributions. By illuminating the headliner with different colored light additional effects can be achieved.

According to a preferred embodiment of the invention it is proposed that the at least one light source is part of a projector or forms the projector which is designed to project a light pattern, a logo or a symbol at least on the partial area of the headliner, and that at least this partial area as a projection surface is formed. The projection may be realized by means of a micro-mirror actuator (e.g., MEMS mirror), prism optics (kaleidoscope), or micro-optics. When integrating the lighting arrangement in the interior of the motor vehicle, it should be noted that there are no passengers or components of the vehicle present in the interior in the beam paths of the light emitted by the projector.

Advantageously, at least the partial area of the headliner forming the projection surface is provided with a multiplicity of small, transparent bundling optics distributed over the partial area. Preferably, the bundling optics are formed as spherical segments made of glass or plastic. With such a trained projection surface, the light from the projector is focused and reflected more towards the projector than in all other possible directions. From the direction of the projector a brighter picture can be seen. By means of the bundling optics, therefore, the efficiency of the reflection of the projected image from the headliner back into the interior can be improved. The image projected onto the headliner can preferably be selected individually by the driver of the motor vehicle. For this purpose, a special menu may be provided in an on-board computer of the motor vehicle, which allows a selection of predetermined images or a download of images from the Internet or from a mobile phone of the driver. Alternatively, a program (a so-called application or app) can be installed on the mobile phone, with which the projection can be customized to the headliner.

According to another advantageous embodiment of the invention it is proposed that a layer of fluorescent material is attached to the headliner, on which a mask of a substantially light-impermeable material is applied with local light-transmissive areas forming a pattern. When the headliner is illuminated by the at least one light source arranged in the interior, the fluorescent material illuminates through the light-transmitting area of the mask and emits light toward the interior. In this concept, the headliner is constructed of a multilayered layer, the inner layer comprising the fluorescent material covered by the outer layer in the form of the mask. The mask can be individually provided with various patterns of light transmissive areas. By choosing the mask or the pattern different individual appearances of the luminous parts of the headliner can be generated. This concept thus offers a cost-effective alternative to the individual arranging and contacting individual light sources (usually LEDs) in the headliner currently practiced in the art in order to realize an individual luminous pattern on the headliner (eg in different models of Rolls Royce and in the Opel Adam). ,

According to yet another embodiment of the invention, it is proposed that in the case of a vehicle equipped with a collapsible convertible top motor vehicle to structural elements of the convertible top, in particular on a front roof cap, side roof frame, a bow or a part thereof, fluorescent material is attached. When the fluorescent material is illuminated by the light sources arranged in the interior, the material illuminates and emits light in the direction of the interior. In this case, the fluorescent material may be applied linear or planar. Depending on the nature of the material, when illuminated with light of a certain wavelength, it in turn emits light of a particular color. The light of the light sources may be, for example, UV light or visible light of any color. It is conceivable to irradiate the fluorescent material depending on the situation with light of different wavelengths, so that the material emits light of a predetermined color.

The wavelength of the light of the light sources can be chosen so that the color of the emitted light from the fluorescent material corresponds to a color that was detected by a camera above the vehicle roof or a convertible top most often. For example, it is conceivable that, when driving through a forest, the fluorescent material is irradiated with light of a wavelength which causes the fluorescent material to emit green light. Likewise, it would be conceivable to irradiate the fluorescent material with light of a wavelength when driving under a blue sky, which causes the fluorescent material to emit blue light. Furthermore, it would be conceivable for the light emitted by the at least one light source to have a wavelength which depends on the time of day, on the presence of a dangerous situation detected in the surroundings of the motor vehicle, on a temperature in the interior, on a currently selected driving mode of the motor vehicle and / or a current driving style of a driver of the motor vehicle. In this way, the fluorescent material is caused to emit light of a color that depends on the time of day (eg daytime green, blue light depending on what is above the headliner, at night white ambient light), from the presence of one in the environment of the motor vehicle detected dangerous situation (eg red light for a detected dangerous situation), from a temperature in the interior (eg red for hot, yellow for warm and blue for cold), from a currently selected driving mode of the motor vehicle (eg green for eco mode, blue for comfort mode, orange for sports mode, red for Sport Plus mode) and / or a current driving style of a driver of the motor vehicle (eg green for restrained driving, red for sporty driving).

It is also proposed that the at least one light source for illuminating the headliner comprises a laser light source or a light emitting diode. In the various lighting concepts, the color psychology of humans can be considered. By choosing different colors of light that illuminate the interior, various reactions and associations in humans can be triggered. For example. has blue calming and relaxing. This color is ideal for reducing stress and hectic. Blue light triggers nervous cramps, the muscles relax and the heart can calm down again. Blue is used in color therapy for the treatment of migraine, for the cooling of daily stress, for regeneration and recovery.

• 1a und 1b verschiedene Ausführungsbeispiele der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 2 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 3 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 4 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 5a ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 5b ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem Festdach ausgestatteten Kraftfahrzeugs;
• 6 eine schematische Ansicht der Anordnung aus den 5a und 5b;
• 7 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs mit einem Ambientelicht bei Nacht am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 8a und 8b das Ausführungsbeispiel der Anordnung aus 7 mit einem Ambientelicht bei Tag am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 9 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 10 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs;
• 11 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs; und
• 12 ein weiteres Ausführungsbeispiel der erfindungsgemäßen Anordnung zur Beleuchtung des Innenraums eines Kraftfahrzeugs am Beispiel eines mit einem versenkbaren Cabrioverdeck ausgestatteten Kraftfahrzeugs.

Further features and advantages of the present invention will be explained in more detail with reference to FIGS. Show it:

• 1a and 1b Various embodiments of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a with a retractable convertible top equipped motor vehicle;
• 2 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 3 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 4 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 5a a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 5b a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a vehicle equipped with a fixed roof motor vehicle;
• 6 a schematic view of the arrangement of the 5a and 5b ;
• 7 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle with an ambient light at night on the example of a motor vehicle equipped with a retractable convertible top;
• 8a and 8b the embodiment of the arrangement 7 with an ambient light by day using the example of a motor vehicle equipped with a retractable convertible top;
• 9 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 10 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top;
• 11 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top; and
• 12 a further embodiment of the inventive arrangement for illuminating the interior of a motor vehicle on the example of a motor vehicle equipped with a retractable convertible top.

The present invention relates to an arrangement for illuminating the interior of a motor vehicle. Particularly advantageous is the arrangement for use in a vehicle equipped with a retractable convertible top motor vehicle. The convertible top can have collapsible hard-shell roof elements or a fabric top. Particularly in the case of convertible covers made of fabric, it is very difficult to position light sources for illuminating the interior in the region of the headliner with reasonable effort and reasonable costs. For this reason, in the prior art in vehicles with a convertible top, an arrangement of light sources for illuminating the interior in the area of the headliner is dispensed with. Instead, the light sources are arranged on fixed or rigid components of the motor vehicle, e.g. a frame of the windshield, an interior rearview mirror, a footwell or the instrument panel. As a result, the headliner, especially at night, over a large area dark and it creates a cavernous impression that can affect passengers oppressive.

Here, the invention can remedy the situation. The invention proposes to dispose at least one light-emitting element at least on a part region of the convertible top facing the interior of the motor vehicle, which element forms at least a part of the at least one light source for illuminating the interior. The light-emitting element may be a special, active light-emitting flat or elongated element that emits light over its surface or its length and thus illuminates the interior of the motor vehicle. Alternatively, the light-emitting element can also be illuminated by at least one light source arranged in the interior of the motor vehicle and then passively emit light, for example by reflection, fluorescence or phosphorescence.

In this case, actively emitting elements in the region of the headliner, for example, can be designed as light guides, OLEDs or luminous substances. The passively light-emitting elements in the region of the headliner are, for example, as a projection surface, fluorescent or phosphorescent surfaces, or the like. educated. The light sources for illuminating these surfaces can be designed as LEDs in conjunction with suitable optics or as a laser, in particular as a semiconductor laser. Furthermore, the light sources may be part of a projector, for example, by means of MEMS-based Systems (micromirror array or microscanner) or micro-optics projects any images onto the headliner. The light sources can be designed to emit light of different colors and intensities.

Also described is the use of very thin, flexible glass and plastic fibers as optical fibers, which can realize dynamic or static light functions in the vehicle interior. Since the light source does not have to lie directly on the fiber to be illuminated, this can be positioned where sufficient space is available and waste heat can be well dissipated, and the light via a "supply", which generates no loss of light, to the relevant point be transported. Furthermore, due to its small diameter, which is preferably in the μm range, the fiber can also be woven into fabrics. Due to this small diameter of the fiber, a laser is preferably used as the light source for coupling light into the fiber.

In the proposed concepts, the color psychology of humans can be considered. By choosing different colors, the most diverse reactions and associations in humans can be triggered. For example. Blue has a calming and relaxing effect. This color is ideal for reducing stress and hectic. Blue light triggers nervous cramps, the muscles relax and the heart can calm down again. Blue is used in color therapy for the treatment of migraine, to cool off from the stress of the day, for regeneration and recovery.

Concept 1:

The 1a and 1b show a first embodiment of the arrangement according to the invention. It is a view into the interior of a motor vehicle shown against the direction of travel. Very good to recognize are parts of the headrests 2 the front seats, rear seats 4 with headrests 6 , an interior facing the inside of a convertible top 8th and a relatively small rear window disposed therein 10 , In this embodiment, the current inner fabric of the hood 8th In the area of the headliner at least partially replaced by a substance that actively emits light. Such fabrics are marketed, for example, by the company Grado Zero Espace Srl, Montelupo Fiorentino (FI), Italy for garments under the name "Luciferas", "LQ Jacket" and "S1 Sailing Suit". In this case, plastic fibers are woven into a fabric, is coupled into the light and coupled over a longitudinal extent of the fiber from this. The appearance of the headliner or other elements in the vehicle in which the fibers are woven, can be changed by different design of the warp and weft threads. Thus, the fibers can be woven very tight, which realizes a surface lighting. (see. 1a) If the distances between the warp and weft threads of the luminous fibers are made wider, a more subtle (darker) ambience is created. By different weaving techniques, a variety of different lighting patterns are conceivable. In addition, the fibers can be stretched similar to a weaving board and additionally clamped in the fabric, which in 1b is shown, leaving a net-like illuminated structure 8c results.

Such substances are now used according to the invention, for the first time for use in a motor vehicle to illuminate the interior. The particular advantage is that the luminous fabric is robust and flexible and together with the remaining top material of the convertible top 8th opened and folded without damage in a top compartment. In addition, the luminous substance is relatively easy and inexpensive to produce and can be contacted in a simple manner electrically. The electrical supply lines can, for example, from the side roof frame or from the back of the hood 8th from where the hood 8th in connection with the rest of the body, in the hood 8th and continue to be led to the luminous substance. Furthermore, the luminous substance can be brought into a virtually arbitrary shape in a simple manner, so that the designers a particularly large space for designing a night design of the glowing areas of the headliner is available.

In this embodiment, a flat illumination of the entire headliner on the inside of the hood 8th (see. 1a at the top) as well as different structures or line shapes (eg in the direction of travel) can be realized. In the middle representation of 1a are on the headliner on the inside of the convertible top 8th and in a side area between the C-pillar and the windshield 10 relatively wide bright stripes running in the direction of travel 8a realized by darker, non-luminous areas 8b are separated from each other. In the darker areas 8b a conventional non-luminous material can be used as a headliner. In 1a at the bottom are narrower in the direction of travel running luminous stripes 8a realized only in the headliner, whereas on the lateral parts of the convertible top, ie in the area of the A and C columns 16 up to the windshield 10 , no active bulbs are provided for indoor lighting. By designing the line shape and thus the structure (light shadow effect) of the substance, a desired spatial effect of the luminous surface can be realized. So let eg thin glowing lines in the headliner near the C-pillar 16 these appear narrower.

In this concept, light from one or both end faces is coupled into the fibers. With a coupling of light from both ends, different colors and intensities can be realized. With a coupling in from both end faces, even the realization of a color gradient is conceivable, whereby e.g. when illuminating from one end side with red and from the opposite coupling point with blue a color gradient over violet arises. In addition, alternately light with different colors can be coupled into the fibers via a corresponding control, so that a running light effect can be achieved by changing different colors.

In addition, in this concept light of any color and intensity can be coupled into the optical fibers. It would even be conceivable that the light sources which couple light into the optical fibers are coupled to sensors (for example indirectly via a control unit for interior lighting) and couple light of different color and / or intensity into the fibers depending on the signals from the sensors , Here, several sensors such as temperature, acceleration, accelerator, brake pedal and steering angle sensors are conceivable. The corresponding sensor signals can be routed directly from the sensors or via an in-vehicle data bus to the control unit of the interior lighting. The control unit evaluates the sensor signals and generates corresponding control signals for the light sources of the interior lighting, so that they emit light of a certain intensity and / or color. The light sources are controlled in such a way that, depending on the sensor signals, they couple light of a situation-dependent intensity and / or color into the fibers and thus the current situations can be visualized via the fibers.

This example thus describes a luminaire (comprising one or more glass or plastic fibers) in the vehicle, which adapts dynamically to the desired lighting situation and thereby relies on the evaluation of simple sensor signals. Scenarios for ambient lighting and warnings (e.g., red light on vehicle in the sub-lane) or visualization of operating conditions, e.g. the air conditioning system, a driving mode (e.g., Eco, Comfort, Sport, Sport Plus), a driving style of the driver (e.g., restrained to athletic) can be visualized. The coupling via a laser allows the use of this thin fiber and creates a brilliant and sharply demarcated appearance of the fiber.

Concept 2:

An example of this concept is in 2 shown. The basis of this concept is that the interior of the headliner facing the interior of the motor vehicle is used as an indirect light source. The sky of the hood 8th consists, for example, of a polygonal material 8d (See the enlarged detail on the right in 2 ), which reflects the light with different intensity and depending on the angle of incidence in different directions. This creates an illuminating polygonal structure with a random light-shadow ratio (cf. 2 ). The light sources 18 are here either in the headrests 2 . 6 , in the rear seats 4 in the dashboard 12 and / or in the area of the A-pillars 14 and / or C-pillars 16 integrated of the motor vehicle. In 2 are exemplary light sources 18 at the top of the headrests 2 . 6 and in the dashboard 12 located. When integrating the light sources 18 It should be noted that the beam paths are not obscured by the passengers or existing components inside the vehicle. In addition to the use of the headliner as an indirect light source, it can also be illuminated directly by projectors in the form of micro-optics (kaleidoscope) (see concept 3 ).

Concept 3:

Various examples of this concept are in the 3 and 4 shown. The basis of this concept is that the headliner of the hood 8th at least partially via projection 8e is illuminated or logos / symbols / patterns 8f be projected onto at least part of the headliner. The projection can be implemented using MEMS mirrors, prism optics (kaleidoscope) or micro-optics. The light sources / projection systems 20 can either do this in the headrests 2 . 6 , in the rear seats 4 or in the area of the A-pillars 14 and / or C-pillars 16 be integrated into the vehicle.

In 3 is, for example, a logo 8e of a football club projected onto the headliner. The headliner reflects at least part of the light towards the interior and illuminates it. It is particularly advantageous that the cavernous, oppressive effect of the convertible top 8th Lost and the hood 8th instead it looks bright and open. When integrating it must be taken into account that the beam paths from the light sources / projectors 20 not be obscured by the passengers or existing components in the vehicle interior.

In the context of this embodiment, it is conceivable via laser projection of four lasers 20 in the headrests 2 . 6 a logo / icon 8e to project onto the headliner of the convertible (cf. 3 ). The combination of many laser beams creates an individualizable image / symbol 8e , which can be selected via an application on the driver's mobile phone, via a special menu in the on-board electronics of the vehicle, via the Internet or any exchange media (eg USB stick, memory card).

In the context of this embodiment, it is also conceivable via laser projection of four lasers 4 an individualizable pattern 8f (see. 4 ) to project on the headliner of the convertible.

Concept 4:

An example of this concept is in the 5a and 5b shown. Here is the headliner of the convertible top 8th from a multilayered layer (cf. 6 ) built up. An inner situation 22 has a fluorescent material. On the inner situation 22 is an outer situation 24 made of a light-impermeable material having a plurality of light-transmissive regions formed therein. The light transmissive areas form any structure or any pattern 8g , The outer situation 24 serves as a mask. By illuminating the headliner by one or more light sources arranged in the vehicle interior 18 becomes the areas of the mask that are transmissive to light 24 visible fluorescent material 22 for lighting and for passive emission of light in the direction of the interior excited. By a choice of pattern (s) 8g the light-permeable areas in the mask 24 Any individual appearance of the passively illuminated surfaces on the headliner can be generated. While 6 the structure of the multilayer layer from the inner layer 22 made of fluorescent material and the outer layer 24 as mask shows is in 5a an example of an application shown where the light transmissive areas in the mask 24 a pattern 8g having a plurality of matrix-like over and next to each other or mutually offset circular recesses. Of course, the light transmissive areas in the mask 24 also be shaped and / or arranged differently.

The light source (s) 18 emit visible light or invisible black light (UV light). The advantage of UV light is that of the light sources 18 emitted direct light is not visible to the human eye and only the desired area lights in the headliner. In addition to the illumination of the headliner with black light can structures / shapes in the area of the A-pillars 14 and C-pillars 16 as well as the interior lining by application of the fluorescent material 22 and a mask 24 set bright accents.

Instead of the light sources arranged in the interior of the motor vehicle 18 can the fluorescent material 22 Alternatively, in the headliner, it is also possible to excite light and to emit light in such a way that a light-emitting substance with optical fibers (see the example of FIG 1a and 1b) between hood 8th and the fluorescent material is arranged on the headliner (see. 5b) , The optical fibers are preferably woven very tightly into the fabric around the fluorescent layer 22 to illuminate as uniformly as possible. Additionally, another layer of fabric may be between the luminous fabric with the fibers and the layer of fluorescent material 22 to be ordered. This additional layer of fabric may have light transmissive areas that form a pattern or structure. In this way the fluorescent material becomes 22 it only excites at the light-transmissive areas and it may be the glowing pattern or luminous structure 8g be achieved. In this case, then on the mask 24 in front of the location 22 dispensed with the fluorescent material. This results in a sandwich structure of the luminous fabric layer with fibers, the further fabric layer for masking and the fluorescent material 22 , It is also conceivable that the optical fibers (without being woven into a luminous substance) only between fluorescent material 22 and the masking 24 lie. In this case, the optical fibers can be laminated.

The fibers are preferably fed UV light, but also a lighting by blue light or other colors, for which there are fluorescent colors, would be conceivable. An advantage of this design is that the light is generated where it is the fluorescent material 22 stimulates and no shadows can arise, if you remove the UV light from the headrests 2 . 6 would project. The intensity of illumination can be determined by the number and weave of the optical fibers in the luminous material and / or by dimming the light sources 18 , which feed light into the fibers, adjust. This will also make glowing patterns 8g Can be realized on the headliner, which can not be displayed in conventional weaving technology. Or it can be a multi-colored effect through the use of a larger number of fluorescent in different colors materials 22 be achieved.

Concept 5:

An example of this concept is in the 7 . 8a and 8b shown. This will be a roof cap 26 of the hood 8th which in the prior art is usually held in black plastic, illuminated day and night. The roof cap 26 itself here comprises a volume-scattering or transparent material 8h , On the Interior of the vehicle side facing away from the volume-scattering or transparent material 8h (ie between the outer layer of the roof 8th and the material 8h) are light sources (for example in the form of a luminous substance, as it is, for example, with respect to the example of FIG 1a and 1b described), which actively emit light through the transparent material 8h passes, possibly with scattering of the light.

At night, the glowing roof cap 26 be used as ambient lighting or interior lighting when unlocking the vehicle and / or when opening the doors (see. 7 ). During the day, the roof cap 26 in different colors, the color of the roof cap 26 emitted light depends on which color in the environment of the vehicle, in particular above the convertible top 8th , most / most frequently detected. A camera can be used to detect the most common / strongest ambient color. This creates a "more open" feeling for the driver in the interior and the impression of a cave is prevented.

In 7 The night mode is shown in which the roof cap 26 decent ambient light, eg. Send out in blue or white color. In 8a a first day mode is shown where the vehicle is driving through a forest and from the roof cap 26 therefore green light is emitted.

Accordingly, in 8b another day mode shown, in which the vehicle drives under blue skies and from the roof cap 26 therefore blue light is emitted. The color of the roof cap 26 or other elements is thus adapted to the driving or environmental situation.

Concept 6:

An example of this concept is in 9 shown. The roof cap 26 of the hood 8th , which is usually held in black plastic in the art, comprises one or more OLEDs 8i , The state which currently outside the vehicle, especially above the roof 8th , exists (eg blue sky with clouds), is captured via cameras and via the OLED display 8i reproduced. Furthermore, other convertible-specific elements, such as the headliner of the hood 8th for the use of OLEDs 8i conceivable.

Concept 7:

An example of this concept is in the 10 and 11 shown. In this concept, optical fibers 28 used for ambient lighting and for lighting the interior. The light guides 28 (eg made of silicone, plastic fiber, glass fiber) are used on any rigid or rigid structural elements of the convertible top 8th (eg on the front roof cap 26 , on lateral roof frames 30 , on a bow 32 , on a side guide 34 or on a part of it) and create a more pleasant ambience in the vehicle when light along its longitudinal extension 8j send out. The arrangement of the light guides 28 on the structural elements of the convertible top 8th allows the light guides 28 by integration with the existing solid, rigid structure (eg aluminum or plastic) when opening and closing the hood 8th not be bent and damaged. But even a laying of the light guide 28 in the top cloth itself would be conceivable as the light guide 28 very thin and so flexible that they are together with the soft top 8th can be folded without damage. In the example of 10 are the light guides 28 on the roof cap 26 a roof frame 30 and a side guide 34 of the convertible top 8th arranged. The light guides 28 can also be in the bow 32 be integrated (cf. 11 ) or parallel to it near the hoops 32 be attached to the headliner. With the help of this concept, the contours of the hood 8th highlighted and avoided the cave-like impression.

Furthermore, the light guides 28 , which are in the area of the bow 32 or other structural elements are arranged, which couple light into a film (possibly with microstructures or a retroreflective sheeting) which is located between the bows 32 is arranged on the inside of the headliner. The coupled light emerges from the film over a large area. This creates a luminous surface that illuminates the interior of the vehicle. The foil can be used together with the convertible top 8th opened and closed without damage and stowed folded in the top compartment.

The light guides 28 are preferably very thin (diameter in the micron range) and bendable without damage. Instead of weaving them into a fabric itself, the light guides can 28 also for highlighting contours or edges in the vehicle (cf. 12 ), especially in the area of the convertible top 8th (see. 10 and 11 ) are used. Again, different colors can be chosen or a color gradient can be realized in the coupling of both end faces. Again, the properties of the small diameter of the fiber 28 very beneficial to use existing edges and contours and the light sources 18 , the light in the light guide 28 couple, place at a suitable location depending on the space at a distance to the surface to be illuminated (see. 10 and 11 ). The light guides 28 can also be segmented in a way that gives the impression of a running light.

Due to valid rules for the approval of outdoor lighting (eg ECE R48 ), it may be advantageous, the luminous light guide 28 to be placed in the interior in such a way that a comparable effect arises through the windows, ie that of the light guides 28 decoupled light 8j is visible from the outside through the windows and thereby certain outlines of the motor vehicle are highlighted even when viewed from outside. By laying the light guides 28 in the interior eliminates the restrictions of eg the ECE R48 , which makes the use of colors other than white, yellow and red for the emitted light 8j be possible or the use of lighting is not limited to certain speed ranges.

Concept 8:

An embodiment of this concept is in 12 shown. In doing so, the coupling of the light sources, the light in the optical fibers 28 couple, shown on sensors in four different scenarios. Here, several sensors such as temperature, acceleration, accelerator, brake pedal and steering angle sensors are conceivable. The corresponding sensor signals can be passed directly from the sensors or via an in-vehicle data bus to a control unit of the interior lighting. The control unit evaluates the sensor signals and generates corresponding control signals for the light sources of the interior lighting, so that they emit light of a certain intensity and / or color, that in the fibers 28 is coupled. The light sources are controlled in such a way that, depending on the sensor signals, they emit light of a situation-dependent intensity and / or color into the fibers 28 couple and so the current situations about the fibers 28 can be visualized.

So it would be conceivable, for example, that the optical fibers 28a be used as a blind spot detector. Here, the steering angle, a radar, a LIDAR and / or a camera signal is evaluated and processed this information and passed to the light source (eg a laser), which light of a corresponding color and intensity in the optical fibers 28a coupled. The fibers are in the area of the A-pillars 14 arranged. The fibers 28a red, for example, when a threatening dangerous situation has been detected, or green when no other road users have been detected in the blind spot when turning or changing lanes. Further, for example, with the optical fibers 28b an animation of the interior lighting in the form of a running light can be realized when the driver approaches the vehicle, the vehicle unlocks or was identified by a transponder (so-called keyless go). The fibers 28b are laid, for example, along a waistline of the vehicle.

It would also be conceivable that a temperature sensor is provided, whose signals are passed to the control unit of the interior lighting and generates these drive signals for the at least one light source. For example, optical fibers 28c , which are located in the headliner near ventilation openings or around the ventilation openings, glow blue if cooled and glow red in the event of a warm air supply. In this way, the current operating state or the current setting of the air conditioning / ventilation through the optical fibers 28c be visualized. Finally, it would also be conceivable to detect information about an acceleration of the vehicle by an acceleration sensor, to process, to generate corresponding control signals for the light sources and the driver the current driving mode by the color and / or intensity of optical fibers 28d to visualize emitted light. For example, it would be conceivable to use the optical fibers 28d green light to visualize ECO mode. However, these colors could also be chosen freely. The fibers 28d are, for example, arranged on the edge of a center tunnel and / or in partial areas of the steering wheel. This is particularly interesting in an autonomous operation of a vehicle.

Claims (23)

Arrangement for illuminating the interior of a motor vehicle, comprising at least one arranged in the interior of the motor vehicle light source for emitting light and for illuminating the interior, characterized in that at least one of the interior of the motor vehicle facing portion of a headliner of the motor vehicle, a light-emitting area or elongated Element having at least a portion of the at least one light source for illuminating the interior and emits light over its surface or its length. Arrangement according to Claim 1 , characterized in that the planar element is formed as an electroluminescent film comprising a layer of light-emitting phosphor, which is arranged between two thin electrode layers, wherein the remote from the interior of the motor vehicle electrode layer impermeable to light and directed to the interior electrode layer transmissive light is, the electroluminescent film is mounted at least on a portion of the headliner and the electrode layers are exposed to the emission of light with an AC voltage. Arrangement according to Claim 1 , characterized in that the planar element is formed as an electroluminescent substance, which is a layer Light-emitting phosphor, which is arranged between two thin electrode layers, and a carrier material made of material, on which the three layers are spread, wherein the electroluminescent material with the carrier material made of fabric facing away from the interior at least on a portion of the headliner is mounted and the electrode layers are exposed to the emission of light with an AC voltage. Arrangement according to Claim 1 , characterized in that the sheet-like element is formed as a woven fabric in the weave structure of optical fibers of plastic or glass are used, wherein the woven fabric is mounted on a portion of the headliner and at least one end of the optical fibers light at least one light source coupled and decoupled over the longitudinal extent of the fibers to illuminate the interior. Arrangement according to Claim 4 , characterized in that the sheath comprises a fluorinated polymer. Arrangement according to Claim 4 or 5 , characterized in that a layer of fluorescent material is applied to the woven fabric. Arrangement according to Claim 6 , characterized in that on the layer (22) of fluorescent material, a mask (24) made of a substantially light-impermeable material with local light-transmitting regions is applied, which form a pattern. Arrangement according to Claim 1 , characterized in that the motor vehicle is a motor vehicle equipped with a retractable convertible top (8) and the planar element comprises at least one organic light-emitting diode (OLED), which at least at a portion of a front roof cap (26) and / or a side roof frame (30 ) of the convertible top (8) is mounted. Arrangement according to Claim 1 , characterized in that the elongated member comprises a plurality of optical fibers (28), which are laid in the headliner, wherein at least one end of the light guide (28) light from light sources (18) couples and the light guides (28) the coupled light over its entire Decoupling longitudinal extension in the direction of the interior of the motor vehicle. Arrangement according to Claim 9 , characterized in that the motor vehicle is a motor vehicle equipped with a retractable convertible top (8) and the light guides (28) on structural elements of the convertible top (8), in particular on a front roof cap (26), lateral roof frame (30), a bow ( 32) or a part thereof are attached. Arrangement for illuminating the interior of a motor vehicle, comprising at least one arranged in the interior of the motor vehicle light source for emitting light and for illuminating the interior, characterized in that the at least one light source (18; 20) arranged and aligned in the interior of the motor vehicle in that the light emitted by the at least one light source (18; 20) strikes at least a partial area of a headliner of the motor vehicle facing the interior of the motor vehicle and at least this subarea of the headliner forms and is part of the arrangement for illuminating the interior space indirect light source to illuminate the interior of the motor vehicle. Arrangement according to Claim 11 , characterized in that the at least one light source (18; 20) is arranged in headrests (2, 6), in seats (4) and / or in columns (14, 16) of the motor vehicle. Arrangement according to Claim 11 or 12 , characterized in that at least a portion of the headliner has a two-dimensional pattern or a three-dimensional structure, which reflects incident light locally with different intensities and in different directions depending on the angle of incidence. Arrangement according to Claim 13 , characterized in that the pattern is formed as a polygonal pattern or the structure as a polygonal structure. Arrangement according to Claim 11 or 12 , characterized in that the at least one light source is part of a projector (20) or forms the projector (20), which is designed to project a light pattern, a logo or a symbol at least on the partial area of the headliner, and that at least this partial area is designed as a projection surface. Arrangement according to Claim 11 or 12 , characterized in that on a headliner a layer of fluorescent material (22) is mounted, on which a mask (24) is applied from a substantially light-impermeable material with local light-transmissive areas forming a pattern. Arrangement according to Claim 11 or 12 , characterized in that the motor vehicle is a motor vehicle equipped with a retractable convertible top (8), wherein Structural elements of the convertible top, in particular on a front roof cap (26), side roof frame (30), a bow (32) or a part thereof, fluorescent material is attached. Arrangement according to one of the preceding claims, characterized in that the at least one light source (18; 20) is designed to emit light in a wavelength range which is visible to the human eye or in an invisible UV wavelength range. Arrangement according to Claim 18 , characterized in that the at least one light source (18) is designed to emit visible light of different colors. Arrangement according to Claim 19 , Characterized in that the radiation emitted by the at least one light source (18) color of the light depends on the time of day, by a means of a camera above the automobile highest detected in color, on the presence of a detected in the environment of the motor vehicle hazard situation, a temperature in the interior, a currently selected driving mode of the motor vehicle and / or a current driving style of a driver of the motor vehicle. Arrangement according to one of the preceding claims, characterized in that the at least one light source (18) comprises a laser light source or a light-emitting diode. Motor vehicle with an arrangement for illuminating the interior, which comprises at least one arranged in the interior of the motor vehicle light source for emitting light and for illuminating the interior, characterized in that the arrangement for illuminating the interior is designed according to one of the preceding claims. Motor vehicle after Claim 22 , characterized in that the motor vehicle is a motor vehicle equipped with a retractable convertible top (8).

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