DE102020114537A1 - Interior lighting arrangement for indirect lighting of a vehicle interior with invisible light and a corresponding vehicle - Google Patents

Abstract

The invention relates to an interior lighting arrangement for a vehicle, in particular for a motor vehicle, comprising: a windshield which at least partially delimits a cockpit area of a vehicle interior and has a reflection section which, on the vehicle interior side, reflects and / or diffuses invisible light in a predetermined spectral range , in particular infrared light; an interior mirror arranged in the vehicle interior in front of or above an upper section of the windshield; as well as an upper light source arranged on the inside mirror or in its vicinity in the vehicle interior, facing the reflective section of the windshield, which is arranged and designed for radiating the invisible light in the direction of the reflective section of the windshield so that it is perpendicular and / or obliquely downward from the reflective section is reflected and / or diffusely scattered to illuminate the cockpit area and objects located therein.

Description

Technical area

The invention relates to interior lighting arrangements which are designed to illuminate a vehicle interior provided for occupants with light in the invisible electromagnetic spectral range, in particular in the infrared range. The invention also relates to a suitably equipped vehicle, in particular a motor vehicle or any other land, air or water vehicle.

Technical background

In the vehicle interior of a motor vehicle, systems are often used that require light in the invisible spectral range for their function, mostly infrared. For example, it can be an occupant monitoring system to ensure correct functioning of auxiliary and control systems provided on board the motor vehicle. In order to ensure the correct function of such a system, its detection area in the vehicle interior must be sufficiently illuminated by light sources that emit invisible light in the same spectral range.

To illuminate a vehicle interior, direct lighting is mostly used, i. H. the area of the room that is to be illuminated is illuminated directly by the light source. For this purpose it is known, for example, to position several light sources that emit invisible light at several points in the vehicle interior. With the usual interior architecture of a motor vehicle, however, it is not always possible to achieve the desired illumination with direct lighting: Some areas of the vehicle interior are permanently or temporarily covered by other objects, for example by a steering wheel or the driver's arms when the steering wheel is moved.

An obstacle on the route between a light source and its target area leads to the casting of a shadow. This can impair the functioning of the system, which is dependent on proper illumination of the target area. In principle, this problem can be solved by using several light sources or by repositioning one light source. However, due to the very high demands placed on the correct functioning of the illumination on the one hand and for reasons of economy, the limited installation space, ergonomics and / or aesthetics in the vehicle interior, on the other hand, it is not always possible in practice. A visible integration of parts of the sensor system can also lead to unpleasant feelings in some vehicle occupants, for example a feeling of permanent observation. However, it is not always possible to place the light sources discreetly in the case of direct lighting. In addition, some people can perceive strong light sources in the infrared range when looking directly into the light source. This visible “glow” can also irritate the occupants.

• So offenbart beispielsweise WO 2017/167483 A1 eine Beleuchtungsvorrichtung zum Beleuchten eines Fahrers eines Fahrzeugs mit Infrarotlicht sowie ein Fahrerbeobachtungssystem und eine Head-up-Display-Einheit mit einer solchen Beleuchtungsvorrichtung. Dabei ist eine Infrarotlichtquelle der Beleuchtungsvorrichtung ausgebildet, um einen Infrarotlichtstrahl unter Nutzung eines Strahlengangs der Head-up-Display-Einheit des Fahrzeugs auszusenden, um den Fahrer mit dem Infrarotlicht zu beleuchten. Unter einer Head-up-Display-Einheit (HUD) kann dabei ein Sichtfeldanzeigegerät zum Anzeigen eines virtuellen Bildes in einem Sichtfeld des Fahrers verstanden werden; und unter ihrem Strahlengang kann ein Lichtweg verstanden werden, über den ein Lichtstrahl ausgehend von einer Bilderzeugungseinrichtung der HUD-Einheit in das Sichtfeld des Fahrers gelenkt werden kann.

In addition to direct lighting, in the specific cases in which the driver's face or the condition of the driver's eyes are to be precisely monitored, it is known to illuminate and capture the driver's face from the front using a beam path known from the head-up display, the one from an infrared light source or infrared camera housed in the vehicle's instrument panel leads to the driver's face via a reflection on the windshield or a combiner window:

• For example, reveals WO 2017/167483 A1 a lighting device for illuminating a driver of a vehicle with infrared light and a driver observation system and a head-up display unit with such a lighting device. In this case, an infrared light source of the lighting device is designed to emit an infrared light beam using a beam path of the head-up display unit of the vehicle in order to illuminate the driver with the infrared light. A head-up display unit (HUD) can be understood to mean a field of view display device for displaying a virtual image in the driver's field of view; and its beam path can be understood to mean a light path via which a light beam, starting from an image generation device of the HUD unit, can be directed into the driver's field of vision.

For example, the beam path according to WO 2017/167483 A1 comprise a windshield of the vehicle or a combiner pane which can act as a reflective surface for reflecting both this light beam and the infrared light beam. For example, a suitable infrared light source can be integrated into the image generation device of the HUD unit for this purpose or, alternatively or in addition, also be arranged at other locations in the above-mentioned HUD beam path, for example in the area of deflection optics of the head-up display to guide the infrared light beam through the beam path in direct a field of view of the driver. Such a lighting device for indirect infrared lighting by means of intelligent integration in a HUD or combiner HUD offers according to WO 2017/167483 A1 the advantage of a frontal and even illumination of a face of the Driver as well as efficient use of the available space in the vehicle.

Also disclosed US 2002/0116106 A1 a motor vehicle with a monitoring arrangement that has one or more active pixel cameras for capturing images inside the motor vehicle and for using the information obtained therefrom when controlling other vehicle systems, such as e.g. B. an airbag, an air conditioning system, an entertainment system, an adjustable rearview mirror, or for driver fatigue detection. In particular, several transmitters and receivers of infrared waves are arranged at different positions in the motor vehicle, which are typically arranged for the best possible resolution with a direct view of the objects to be monitored in the passenger compartment. Specifically, a transmitter and receiver pair is also described, which is arranged in the instrument panel opposite the windshield, so that the infrared light emitted to the driver's face or reflected by the latter is reflected on the windshield in a manner similar to the head-up display. A suitable coating of the windshield can be provided to ensure a required reflectivity in the infrared range used.

It is also off US 2015/0124068 A1 a driver monitoring system and an associated assembly method are known, the system being usable, for example, for monitoring the vigilance of a driver of a motor vehicle or as an input device based on recognition of his gestures. The assembly method specifically comprises attaching a reflective infrared film to a windshield of the motor vehicle, attaching an infrared flash in the area of the instrument panel to emit infrared light to the driver and an infrared camera to capture an image illuminated by the beam, and aligning the infrared flash and / or the infrared camera to a position opposite the reflective infrared film. In particular, shadow formation by the steering wheel can be avoided in this way by reflection of the infrared light on the windshield on the way to the driver or to the infrared camera. A similar arrangement in the context of an optical system in a motor vehicle for the purpose of driver monitoring is also out US 2006/0098166 A1 known.

The object of the present invention is to provide one or more optical arrangements for illuminating a vehicle interior or predetermined parts thereof with light in the invisible electromagnetic spectrum, in particular in the infrared range, which, in the light of the prior art and the problems described, provide alternative, further and / or for example, with regard to the freedom of position and / or size of the illuminable vehicle interior areas and objects and / or a space-saving or discreet accommodation of the light sources in the vehicle offer improved arrangement options. It is also the object of the invention to specify a vehicle, in particular a motor vehicle, which is equipped with one or more such interior lighting arrangements.

Disclosure of the invention

This object is achieved by an interior lighting arrangement according to one of the independent claims 1, 4 or 7 or by any combination of these interior lighting arrangements and by a vehicle equipped therewith according to the independent claim. Further refinements are given in the dependent claims. All of the additional features and effects mentioned in the claims and the following description for the interior lighting arrangements also apply in relation to the vehicle, and vice versa.

• - eine Windschutzscheibe, die den im Fahrzeug vorne angeordneten und insbesondere für den Fahrer zur Fahrzeugsteuerung vorgesehenen Cockpitbereich zumindest teilweise begrenzt und einen Reflexionsabschnitt aufweist, der fahrzeuginnenraumseitig zum Reflektieren und/oder zu einer zumindest teilweise diffusen Rückstreuung des unsichtbaren Lichts ausgebildet ist;
• - einen im Fahrzeuginnenraum vor oder über einem oberen Abschnitt der Windschutzscheibe angeordneten Innenspiegel; sowie
• - eine am Innenspiegel oder in dessen Nähe im Fahrzeuginnenraum bzw. in oder an diesen begrenzenden Bauteilen fahrzeuginnenraumseitig angeordnete, dem Reflexionsabschnitt der Windschutzscheibe zugewandte obere Lichtquelle, die zum Abstrahlen des unsichtbaren Lichts in Richtung des Reflexionsabschnitts der Windschutzscheibe so angeordnet und ausgebildet ist, dass dieses Licht vom Reflexionsabschnitt senkrecht und/oder schräg nach unten zum Ausleuchten des Cockpitbereichs und darin befindlicher Objekte reflektiert und/oder diffus gestreut wird. Diese Ausleuchtung kann - in Kombination mit einem geeigneten Erfassungsgerät - beispielswese für Systeme zur Bewegungserkennung, etwa eine Gestik-Kamera, verwendet werden, vgl. 1.

According to a first aspect, an interior lighting arrangement for a vehicle, in particular for a motor vehicle or any other land, air or water vehicle, is provided which, according to a first embodiment, is used to indirectly illuminate a so-called cockpit area of a vehicle interior from above with what is invisible to the human eye Light is formed in a predetermined spectral range, in particular with infrared light, and for this purpose comprises the following:

• A windshield which at least partially delimits the cockpit area which is arranged at the front of the vehicle and which is intended in particular for the driver to control the vehicle, and which has a reflection section which is designed on the vehicle interior side for reflecting and / or for at least partially diffuse backscattering of the invisible light;
• an inside mirror arranged in the vehicle interior in front of or above an upper section of the windshield; as
• - an upper light source facing the reflection section of the windshield, which is arranged and designed to emit the invisible light in the direction of the reflection section of the windshield so that this light is arranged on the inside mirror or in its vicinity in the vehicle interior or in or on components delimiting the vehicle interior from the reflection section vertically and / or obliquely is reflected and / or diffusely scattered at the bottom to illuminate the cockpit area and objects located therein. This illumination can - in combination with a suitable detection device - be used, for example, for systems for motion detection, such as a gesture camera, cf. 1 .

Here, terms such as “over”, “under”, “down”, “side”, “front” and the like, particularly in the case of a motor vehicle, but also for other types of vehicle in a conventional Cartesian vehicle coordinate system (X, Y, Z) understand, with a horizontal X-axis in the longitudinal direction of the vehicle, which corresponds to the direction of travel, a vertical Y-axis in the transverse direction of the vehicle and a vertical Z-axis that is perpendicular to this and points upwards from a vehicle floor to a vehicle roof (cf. 1 and 2 ).

One idea of the invention consists in bringing the degree of reflection in the invisible spectral range of the upper light source to an optically usable level in the above-mentioned reflection section of the windshield by means of suitable measures, in particular known to those skilled in the art, and using this surface as a mirror or reflector for one to Indirect not present in the vehicle, d. H. Using the reflection on the windshield, downwardly running optical path between a predetermined target area below in the cockpit and the light source arranged further above in the area of the interior mirror. (More details of the mutual arrangement of the reflection section of the windshield and the upper light source can be selected in a specific application, for example depending on the vehicle geometry and the desired target area of the vehicle interior to be illuminated. Some possible examples of this are given below.)

The “reflective section” mentioned herein can in particular be implemented as a partial section of the windshield, for example in which a special reflective layer (e.g. film, etc., see below) has been partially applied to the pane especially for this purpose. But that doesn't have to be the case, i. H. the “reflection section” can alternatively also extend over the entire pane surface and in particular already be provided for other purposes in the vehicle. For example, in many motor vehicles today, for reasons of protection from sunlight, the panes are equipped with an infrared protection filter over a large area, for example in the form of a coating. Such filters that are already present can also be used for the described function of the invention - optionally with a suitable optimization of the reflectivity on the inside of the vehicle.

With such an optical arrangement, the cockpit area can be illuminated from above and / or at an angle from the front, i. H. from the direction of the reflective portion of the windshield. This direction of illumination would be accessible neither via direct lighting nor via a HUD beam path described at the beginning. Furthermore, the aforementioned shadow cast by other objects and moving objects in the cockpit, such as a steering wheel, driver's hands or displays, etc. protruding from an instrument panel, can be effectively avoided.

In addition, a particularly space-saving and discreet accommodation of a light source is often possible in the area of the interior mirror. The upper light source can be mounted in or on a rear side of the interior mirror facing the reflection section of the windshield and / or on a position of the vehicle that is concealed by the interior mirror or its holder for viewing directions from a passenger compartment, in particular for the driver. In contrast to the instrument panel, there can be sufficient free space for the upper light source at this point in the vehicle.

• - eine Abstrahlcharakteristik der oberen Lichtquelle und deren Ausrichtung bezüglich des Reflexionsabschnitts der Windschutzscheibe derart sind, dass das am Reflexionsabschnitt senkrecht oder schräg nach unten reflektierte bzw. gestreute unsichtbare Licht einen vorbestimmten Teil des Cockpitbereichs vor und/oder über der Instrumententafel und darin befindliche Objekte ausleuchtet; und
• - die in dem vorbestimmten Teil des Cockpitbereichs auszuleuchtenden Objekte vorzugsweise Hände eines Insassen, insbesondere des Fahrers, des Fahrzeugs sind und deren Ausleuchtung mit dem unsichtbaren Licht für deren optische Erfassung durch eine in demselben Spektralbereich arbeitende Gestik-Kamera ausgelegt ist, beispielsweise indem die ausgeleuchtete Fläche und/oder die Lichtintensität des unsichtbaren Lichts in dieser Fläche ausreichend groß für diesen Zweck gewählt sind.

According to a further development of the first embodiment, the interior lighting arrangement further comprises an instrument panel arranged in the cockpit area under the windshield, wherein

• an emission characteristic of the upper light source and its alignment with respect to the reflective section of the windshield are such that the invisible light reflected or scattered vertically or obliquely downward at the reflective section illuminates a predetermined part of the cockpit area in front of and / or above the instrument panel and objects located therein; and
• The objects to be illuminated in the predetermined part of the cockpit area are preferably the hands of an occupant, in particular the driver, of the vehicle and their illumination with the invisible light is designed for their optical detection by a gesture camera operating in the same spectral range, for example by the illuminated area and / or the light intensity of the invisible light in this area is selected to be sufficiently large for this purpose.

• - eine Seitenscheibe, die den Fahrzeuginnenraum zumindest teilweise begrenzt und einen Reflexionsabschnitt aufweist, der fahrzeuginnenraumseitig zum Reflektieren und/oder zu einer zumindest teilweise diffusen Rückstreuung des unsichtbaren Lichts ausgebildet ist; sowie
• - mindestens eine im Fahrzeuginnenraum bzw. in oder an diesen begrenzenden Bauteilen fahrzeuginnenraumseitig angeordnete, dem Reflexionsabschnitt der Seitenscheibe zugewandte seitliche Lichtquelle, die zum Abstrahlen des unsichtbaren Lichts in Richtung des Reflexionsabschnitts der Seitenscheibe so angeordnet und ausgebildet ist, dass dieses Licht vom Reflexionsabschnitt zum Ausleuchten des Fahrzeuginnenraums und darin befindlicher Objekte reflektiert und/oder diffus gestreut wird. Dieses Licht kann insbesondere eingesetzt werden, um die seitlichen Bereiche des Fahrzeuginnenraums auszuleuchten, wie z. B. eine Fahrer-Profilansicht für dessen genauere Authentifizierung, vgl. 2.

According to a second embodiment, which can be combined with the above first embodiment, an interior lighting arrangement for a vehicle, in particular for a motor vehicle or any other land, air or water vehicle, is provided, which is used for indirect lateral illumination of a vehicle interior light invisible to the human eye in a predetermined spectral range, in particular with infrared light, and for this purpose comprises the following:

• a side window which at least partially delimits the vehicle interior and has a reflection section which is designed on the vehicle interior side to reflect and / or to at least partially diffuse backscattering of the invisible light; as
• - At least one side light source arranged in the vehicle interior or in or on components delimiting the vehicle interior, facing the reflection section of the side window, which is arranged and designed to emit the invisible light in the direction of the reflection section of the side window so that this light from the reflection section is used to illuminate the Vehicle interior and objects located therein is reflected and / or diffusely scattered. This light can be used in particular to illuminate the side areas of the vehicle interior, such as. B. a driver profile view for its more precise authentication, cf. 2 .

In this embodiment, too, an idea of the invention consists in bringing the degree of reflection in the invisible spectral range of the side light source to an optically usable level in the above-mentioned reflection section of the side light source by means of suitable measures, in particular known as such to the person skilled in the art, and using this surface as a mirror or Reflector for an indirect lateral, d. H. Optical path running via the reflection on the side window between a predetermined target area in the vehicle interior and a correspondingly suitable position in the vehicle (further forward or further back, and / or further up or further down, e.g. on a headliner or on a vehicle seat side) arranged lateral light source. (More details of the mutual arrangement of the reflection section of the side window and a side light source can be selected in a specific application, for example depending on the vehicle geometry and the desired target area of the vehicle interior to be illuminated. Some possible examples of this are given below.)

The “reflective section” mentioned here can in particular be implemented as a partial section of the side pane, for example in which a special reflective layer (e.g. film, etc., see below) has been partially applied to the pane especially for this purpose. But that doesn't have to be the case, i. H. the “reflection section” can alternatively also extend over the entire pane surface and in particular already be provided for other purposes in the vehicle. For example, in many motor vehicles today, for reasons of protection from sunlight, the panes are equipped with an infrared protection filter over a large area, for example in the form of a coating. Such filters that are already present can also be used for the described function of the invention - optionally with a suitable optimization of the reflectivity on the inside of the vehicle.

With such an optical arrangement, the vehicle interior can be illuminated from the direction of the reflection section of the side window. This direction would not be accessible via direct lighting. As a result, for example, object surfaces facing the side window can be illuminated better, in particular more evenly, and accordingly detected with a higher resolution by a detection device arranged at a suitable position in the vehicle. Furthermore, the aforementioned shadow cast by other objects crossing a direct optical path or moving objects in the vehicle can be avoided.

In a specific embodiment, the side window is designed as part of a front vehicle door on the driver's side, and at least one of the side light sources is arranged in a cockpit area arranged at the front of the vehicle interior, in particular in or on a surface of an instrument panel, an A-pillar, facing the reflection section of the side window of the vehicle or a door rail of the vehicle door mentioned. Alternatively or additionally, the interior lighting arrangement can further comprise one or more vehicle seats arranged in the vehicle interior and / or one or more front or rear vehicle doors and / or A-, B- or C-pillars and / or a headliner and / or a rear panel that supports the Also limit the vehicle interior, and at least one of the side light sources can be arranged on an A, B or C-pillar, a door rail of one of the vehicle doors, on a vehicle seat or on its headrest, on the headliner and / or on the rear panel. The vehicle seats and their headrests in particular can be particularly well suited for the discrete attachment of the lateral light sources and / or result in a particularly good view of the object to be illuminated via the indirect optical path of the type set out herein.

In particular, in the interior lighting arrangements according to the first and / or the second embodiment, the reflection section of the windshield and / or the reflection section of the side window can be in or on the Windshield or the side window in the vehicle production or subsequently attached, invisible light on the vehicle interior side reflecting and / or diffusely scattering layer, coating or film, which can in particular be transparent to visible light.

• - eine von der Fahrzeugverglasung verschiedene Interieuroberfläche, die den Fahrzeuginnenraum zumindest teilweise begrenzt und einen Reflexionsabschnitt aufweist, der fahrzeuginnenraumseitig zum Reflektieren und/oder zu einer zumindest teilweise diffusen Rückstreuung des unsichtbaren Lichts ausgebildet ist; sowie
• - mindestens eine im Fahrzeuginnenraum bzw. in oder an diesen begrenzenden Bauteilen fahrzeuginnenraumseitig angeordnete, dem Reflexionsabschnitt der Interieuroberfläche zugewandte Interieur-Lichtquelle, die zum Abstrahlen des unsichtbaren Lichts in Richtung des Reflexionsabschnitts der Interieuroberfläche so angeordnet und ausgebildet ist, dass dieses Licht vom Reflexionsabschnitt zum Ausleuchten des Fahrzeuginnenraums und darin befindlicher Objekte reflektiert und/oder diffus gestreut wird.

According to a third embodiment, which can be combined with the above first and / or second embodiment, an interior lighting arrangement for a vehicle, in particular for a motor vehicle or any other land, air or water vehicle, is provided, which is used to indirectly illuminate a vehicle interior is formed with light invisible to the human eye in a predetermined spectral range, in particular with infrared light, via reflection and / or diffuse scattering on an interior surface different from the vehicle glazing and for this purpose comprises the following:

• an interior surface different from the vehicle glazing, which at least partially delimits the vehicle interior and has a reflection section which is designed on the vehicle interior side to reflect and / or to at least partially diffuse backscattering of the invisible light; as
• - At least one interior light source, which is arranged in the vehicle interior or in or on the delimiting components on the vehicle interior side, faces the reflection section of the interior surface and is arranged and designed to emit the invisible light in the direction of the reflection section of the interior surface in such a way that this light is from the reflection section for illumination of the vehicle interior and objects located therein is reflected and / or diffusely scattered.

In this embodiment, one idea of the invention is that in the above-mentioned reflection section of the surface of an interior part in the vehicle interior, the degree of reflection in the invisible spectral range of the interior light source is already determined or by suitable measures (such as a special component coating) that are known as such to those skilled in the art is an optically usable level, so that this surface acts as a mirror or reflector for an indirect, i.e. H. Optical path running via the reflection on the interior surface between a predetermined target area in the vehicle interior and a correspondingly suitable position in the vehicle (further forward or further back, and / or further above or further below, e.g. on a headliner or on a vehicle seat side) arranged interior light source can be used.

Such interior parts can thus be used as reflectors for deflecting the illumination rays in the invisible spectral range, whereby the requirements for the optical illumination presented here in comparison to optical detection can be far less stringent on the surface shape or its reflective properties, so that diffuse scattering or an irregular reflective surface geometry can also exist can be sufficient or even useful. Practically every component with a suitable shape and position in the vehicle interior can be used as a reflector for the invisible light. This radically increases the possibilities for discrete positioning of the light sources and also the possibilities for more economical integration. An example of this is in 3 illustrated.

The “reflection section” mentioned here can in particular be implemented as a section of the interior surface, for example in which a special reflection layer (e.g. film or lacquer layer, etc., see below) has been partially applied to the interior surface especially for this purpose. But that doesn't have to be the case, i. H. the “reflection section” can alternatively also extend over the entire surface of the relevant interior part and for example already be provided for other purposes in the vehicle, for example as a protective layer and / or a surface provided for optical design reasons.

In a specific embodiment, the interior surface is a surface of an instrument panel, a center console formed therein, a door railing or door lining of a vehicle door, a rear lining and / or a vehicle seat back of a vehicle seat arranged in the vehicle interior. Alternatively or additionally, the interior lighting arrangement can furthermore comprise an instrument panel, one or more vehicle seats arranged in the vehicle interior and / or one or more front or rear vehicle doors and / or A, B or C pillars and / or a headliner and / or a rear panel which also delimit the vehicle interior, and at least one of the interior light sources can be on the instrument panel, on an A, B or C-pillar, on a door rail of one of the vehicle doors, on a vehicle seat or on its headrest, on the headliner and / or be arranged on the rear fairing. The vehicle seats and their headrests in particular can be particularly well suited for the discrete attachment of the interior light sources and / or result in a particularly good view of the object to be illuminated via the indirect optical path of the type set out here.

In particular, the reflection section of the interior surface can be in or on the Interior surface during vehicle manufacture or subsequently applied, invisible light on the vehicle interior side reflecting and / or diffusely scattering layer, coating or film, for example made of a paint, which can be transparent to visible light in particular or can have a customary color.

• - einen Fahrzeuginnenraum, der zumindest teilweise von einer Windschutzscheibe, einer Seitenscheibe und einer Interieuroberfläche begrenzt ist; sowie
• - mindestens eine Innenraumausleuchtungsanordnung gemäß der obigen ersten, zweiten und/oder dritten Ausführungsform.

According to a further aspect, a vehicle, in particular a motor vehicle or any other land, air or water vehicle, is provided. The vehicle includes

• a vehicle interior which is at least partially delimited by a windshield, a side window and an interior surface; as
• - At least one interior lighting arrangement according to the above first, second and / or third embodiment.

In particular, the vehicle can also have at least one detection device, for example a gesture camera, the detection device being designed and arranged to detect the invisible light that is reflected by objects located in the vehicle interior that are illuminated by the at least one interior lighting arrangement.

Figure list

• 1 eine schematische Seitenansicht eines Ausschnitts eines Kraftfahrzeugs mit einer Innenraumausleuchtungsanordnung gemäß der ersten Ausführungsform der Erfindung, wobei eine obere Lichtquelle in diesem Beispiel an einer der Windschutzscheibe zugewandten Innenspiegelrückseite angeordnet ist;
• 2 eine schematische Draufsicht eines Ausschnitts eines Kraftfahrzeugs mit einer Innenraumausleuchtungsanordnung gemäß der zweiten Ausführungsform der Erfindung, wobei die Seitenscheibe in diesem Beispiel Teil einer vorderen Fahrzeugtür auf Fahrerseite ist und eine seitliche Lichtquelle in einer Instrumententafel angeordnet ist; und
• 3 eine schematische Seitenansicht eines Ausschnitts eines Kraftfahrzeugs mit einer Innenraumausleuchtungsanordnung gemäß der dritten Ausführungsform der Erfindung, wobei die Interieuroberfläche in diesem Beispiel eine Oberfläche einer Instrumententafel oder einer Mittelkonsole ist und eine Interieur-Lichtquelle im Bereich eines Innenspiegels oder Dachhimmels des Fahrzeugs angeordnet ist.

The above aspects of the invention and its embodiments and specific configurations are explained in more detail below with reference to the examples shown in the accompanying drawings. The drawings are purely schematic; in particular, they are not to be understood as being true to scale. Show it:

• 1 a schematic side view of a section of a motor vehicle with an interior lighting arrangement according to the first embodiment of the invention, an upper light source in this example being arranged on an inside mirror rear side facing the windshield;
• 2 a schematic top view of a section of a motor vehicle with an interior lighting arrangement according to the second embodiment of the invention, the side window in this example being part of a front vehicle door on the driver's side and a side light source being arranged in an instrument panel; and
• 3 a schematic side view of a section of a motor vehicle with an interior lighting arrangement according to the third embodiment of the invention, the interior surface in this example being a surface of an instrument panel or a center console and an interior light source being arranged in the area of an interior mirror or headliner of the vehicle.

Description of embodiments

All of the various embodiments, variants and specific design features of the interior lighting arrangements and of the vehicle according to the above aspects of the invention mentioned above in the description and in the following claims can be used in the 1 until 3 examples shown. They are therefore not all repeated again below. The same applies accordingly to the definitions of terms and effects already given above in relation to individual features that are included in the 1-3 are shown.

1 shows a schematic side view of a detail of an example of a vehicle, in this case a motor vehicle 1 , with an interior lighting arrangement 9 according to the above first embodiment of the invention.

The car 1 includes a vehicle interior 2 with a front-mounted in the direction of travel X drawn in, and operated by a driver ( 1 just shows his hand 3 ) occupied and used cockpit area 4th at least partially from a windshield 5 and an instrument panel arranged underneath (in the Z direction shown) 6th is limited. There is also a schematic in front of the instrument panel 6th arranged steering wheel 8th indicated. Furthermore, the motor vehicle 1 one in front of an upper section 5a the windshield 5 arranged interior mirror 7th on, in a manner known per se for observing behind the motor vehicle 1 surrounding environment is designed by the driver.

According to the first embodiment of the invention, the motor vehicle 1 the 1 too indirect lighting of the cockpit area 4th from above with invisible light 11th Interior lighting arrangement formed in a predetermined invisible spectral range, in this example infrared light 9 on. In this example, this includes the windshield 5 with their reflection section 10 , the inside of the vehicle to reflect the invisible light 11th is formed, as well as one in the vehicle interior 2 on the inside mirror 7th arranged and the reflection section 10 the windshield 5 facing upper light source 12th .

The upper light source 12th is for radiating the invisible light 11th in the direction of the reflection section 10 the windshield 5 so arranged and designed that it is dated Reflection section 10 vertically and / or obliquely downwards (ie in the XZ direction in the usual vehicle coordinate system shown) for illuminating the cockpit area 4th and objects located therein is reflected and / or diffusely scattered. In this example is the top light source 12th on one of the upper windshield section 5a facing back 7a of the inside mirror 7th and thus on one through the inside mirror 7th for directions of view from a passenger compartment of the motor vehicle 1 hidden position mounted.

In 1 is a radiation characteristic of the upper light source 12th and the mutual arrangement of the reflection section 10 the windshield 5 and the upper light source 12th designed such that the reflection section 10 Invisible light reflected or scattered vertically or diagonally downwards 11th a predetermined part of the cockpit area 4th in front of and / or above the instrument panel 6th and illuminates objects located in it.

As in 1 shown, can in this embodiment of the interior lighting arrangement 9 especially in front of and / or above the instrument panel 6th moving hands 3 an occupant, in this example the driver, of the motor vehicle 1 , from invisible light 11th be illuminated. The car 1 also includes a gesture camera (not shown) that captures the hands 3 reflected / scattered invisible light 11th detected, and the information obtained therefrom can serve in particular as a user interface for the input of control commands for other vehicle systems by this occupant. As in 1 Indicated purely by way of example, the gesture of the hand that can thereby be detected 3 of the driver z. B. the selection of one in the mentioned space in front of and above the instrument panel 6th floating virtual menu display 13th signal, with the virtual menu display 13th from one on the instrument panel 6th mounted display device 14th was generated.

In 1 has the reflection section 10 the windshield 5 purely by way of example one on the windshield 5 The invisible light that is attached during vehicle manufacture or afterwards on the inside of the vehicle 11th reflective layer, coating or film 15th on.

2 shows a schematic plan view of a detail of an example of a vehicle, in this case a motor vehicle 1 , with an interior lighting arrangement 17th according to the above second embodiment of the invention, which in particular with the first embodiment according to 1 can be combined in the vehicle.

The car 1 the 2 includes a vehicle interior 2 that is at least partially covered by a windshield (in 2 not shown), one below (in the drawn Z direction of the usual vehicle coordinate system, cf. 1 ) arranged instrument panel 6th , and a side window 16 is limited. According to the second embodiment of the invention, the motor vehicle 1 in 2 too indirect lateral illumination of the vehicle interior 2 with invisible light 19th Interior lighting arrangement formed in a predetermined invisible spectral range, in this example infrared light 17th on. In this example, this includes the side window 16 with their reflection section 18th , the inside of the vehicle to reflect the invisible light 19th is formed, and one in the vehicle interior 2 arranged, the reflection section 18th the side window 16 facing side light source 20th . The side light source 20th is for radiating the invisible light 19th in the direction of the reflection section 18th the side window 16 so arranged and formed that it is from the reflection section 18th for illuminating the vehicle interior 2 and objects located therein are reflected and / or diffusely scattered.

In 2 is the side window 16 purely by way of example part of a front vehicle door 22nd on the driver's side, and the side light source 20th is in one in terms of 1 cockpit area described in more detail 4th mounted, in this example in one of the reflection section 18th the side window 16 facing surface of the instrument panel 6th . In this way, the side areas of the vehicle interior 2 be illuminated on the driver's side, such as B. the left profile view 21 a of the driver's head 21 which can be used, for example, for a more precise authentication of the driver.

As an alternative or in addition (not shown), the side window and a side light source in this embodiment can also be on the other, ie in FIG 2 be arranged on the right side of the vehicle. The side light source can not only be further forward in the cockpit area 4th , but alternatively or additionally in a rear area or a central area of the motor vehicle 1 be arranged in the longitudinal direction X, such as. B. on a B- or C-pillar or a door railing of a rear door.

3 shows a schematic side view of a detail of an example of a vehicle, in this case a motor vehicle 1 , with an interior lighting arrangement 23 according to the above third embodiment of the invention, in particular with the first embodiment according to 1 and / or with the second embodiment according to 2 can be combined in the vehicle. The car 1 the 3 includes one Vehicle interior 2 with a front in the vehicle longitudinal direction, in operation by a driver ( 3 shows his hand 3 and his head 21 ) occupied and used cockpit area 4th at least partially from a windshield 5 and an instrument panel arranged below 6th is limited.

According to the third embodiment of the invention, the motor vehicle 1 the 3 too indirect illumination of the vehicle interior 2 with invisible light 24 Interior lighting arrangement formed in a predetermined invisible spectral range, in this example infrared light 23 on. This includes an interior surface 25th which in this example is a surface of the instrument panel 6th or a center console and a reflection section 26th has, the vehicle interior side for reflecting and / or for a diffuse backscattering of the invisible light 24 is formed, as well as one in this example in the vehicle interior 2 in the area of an interior mirror or headliner (not shown), the reflection section 26th the interior surface 25th facing interior light source 27 . The interior light source 27 is for radiating the invisible light 24 in the direction of the reflection section 26th the interior surface 25th so arranged and formed that it is from the reflection section 26th for illuminating the vehicle interior 2 and objects located therein is reflected and / or diffusely scattered.

The interior lighting arrangement 23 for example, may be similar to those relating to 1 and 2 application examples described in combination with suitable detection devices for invisible light 24 to a motion detection to operate an above the instrument panel 6th floating virtual menu display 13th and / or a more precise authentication of the driver by optical detection of his head 21 be used.

List of reference symbols

1

Motor vehicle

2

Vehicle interior

3

hand

4th

Cockpit area

5

Windshield

5a

upper section of the windshield

6th

dashboard

7th

Inside mirror

7a

Rear of the interior mirror

8th

steering wheel

9

Interior lighting arrangement designed for indirect cockpit area lighting from above

10

Reflection section of the windshield

11

invisible light

12th

upper light source

13th

virtual menu display

14th

Display device

15th

Invisible light reflecting layer, coating or film

16

Side window

17th

Interior lighting arrangement designed for indirect lateral vehicle interior lighting

18th

Reflection section of the side window

19th

invisible light

20th

lateral light source

21

Driver's head

21a

left driver profile view

22nd

front vehicle door on driver's side

23

for indirect vehicle interior lighting via reflection and / or diffuse scattering on an interior lighting arrangement that is different from the vehicle glazing

24

invisible light

25th

Interior surface

26th

Reflection section of the interior surface

27

Interior light source

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent literature cited

• WO 2017/167483 A1 [0005, 0006]
• US 2002/0116106 A1 [0007]
• US 2015/0124068 A1 [0008]
• US 2006/0098166 A1 [0008]

Claims (10)

Interior lighting arrangement (9) for a vehicle, in particular for a motor vehicle (1), comprising: - A windshield (5) which at least partially delimits a cockpit area (4) of a vehicle interior (2) and has a reflection section (10) which, on the vehicle interior side, is used to reflect and / or diffuse backscattering of invisible light (11) in a predetermined spectral range, in particular infrared light is formed; - An inside mirror (7) arranged in the vehicle interior (2) in front of or above an upper section (5a) of the windshield (5); as - An upper light source (12) which is arranged on the inside mirror (7) or in its vicinity in the vehicle interior (2) and faces the reflection section (10) of the windshield (5) and which is used to emit the invisible light (11) in the direction of the reflection section (10 ) the windshield (5) is arranged and designed so that it is reflected and / or diffusely scattered by the reflection section (10) vertically and / or obliquely downwards to illuminate the cockpit area (4) and objects located therein. Interior lighting arrangement (9) according to Claim 1 , in which the upper light source (12) in or on a rear side (7a) of the interior mirror (7) facing the reflection section (10) of the windshield (5) and / or on a through the interior mirror (7) or its holder for viewing directions from Occupants, in particular the driver, of the vehicle is mounted in a concealed position. Interior lighting arrangement (9) according to Claim 1 or 2 which further comprises an instrument panel (6) arranged in the cockpit area (4) under the windshield (5), wherein - an emission characteristic of the upper light source (12) and its orientation with respect to the reflection section (10) of the windshield (5) are such that the invisible light (11) reflected or scattered vertically or obliquely downward at the reflection section (10) illuminates a predetermined part of the cockpit area (4) in front of and / or above the instrument panel (6) and objects located therein; and - the objects to be illuminated in the predetermined part of the cockpit area (4) are preferably the hands (3) of an occupant, in particular the driver, of the vehicle and their illumination with the invisible light (11) is designed for their optical detection by a gesture camera . Interior lighting arrangement (17) for a vehicle, in particular for a motor vehicle (1), comprising: - A side window (16) which at least partially delimits a vehicle interior (2) and has a reflection section (18) which is designed on the vehicle interior side for reflecting and / or for diffuse backscattering of invisible light (19) in a predetermined spectral range, in particular infrared light ; as - At least one side light source (20) which is arranged in the vehicle interior (2) and faces the reflection section (18) of the side window (16) and which is arranged to emit the invisible light (19) in the direction of the reflection section (18) of the side window (16) and is designed that it is reflected and / or diffusely scattered by the reflection section (18) for illuminating the vehicle interior (2) and objects located therein. Interior lighting arrangement (17) according to Claim 4 - The side window (16) is part of a front vehicle door (22) on the driver's side and at least one of the side light sources (20) is arranged in a cockpit area (4) arranged at the front in the vehicle interior (2), in particular in or on one of the reflection section (18) the surface of an instrument panel (6) facing the side window (16), an A-pillar of the vehicle or a door panel of said vehicle door (22); and / or - the interior lighting arrangement (17) also has one or more vehicle seats arranged in the vehicle interior (2) and / or one or more front or rear vehicle doors and / or A, B or C pillars and / or a headliner and / or comprises a rear panel that delimit the vehicle interior (2), and at least one of the side light sources (20) on an A, B or C-pillar, a door sill of one of the vehicle doors, on a vehicle seat or on its headrest, on the headliner and / or is arranged on the rear fairing. Interior lighting arrangement (9) and / or interior lighting arrangement (17) according to one or more of the preceding claims, wherein the reflection section (10) of the windshield (5) and / or the reflection section (18) of the side window (16) has an in or on the windshield ( 5) or the side window (16) attached, invisible light (11, 19) on the vehicle interior side reflective and / or diffusely scattering and preferably transparent for visible light layer, coating or film. Interior lighting arrangement (23) for a vehicle, in particular for a motor vehicle (1), comprising: - an interior surface (25) different from the vehicle glazing, which at least partially delimits a vehicle interior (2) and has a reflection section (26) which is designed on the vehicle interior side for reflecting and / or for diffuse backscattering of invisible light (24) in a predetermined spectral range, in particular infrared light; and - at least one interior light source (27) arranged in the vehicle interior (2) and facing the reflection section (26) of the interior surface (25), which is used to emit the invisible light (24) in the direction of the reflection section (26) of the interior surface (25) is arranged and designed in such a way that it is reflected and / or diffusely scattered by the reflection section (26) for illuminating the vehicle interior (2) and objects located therein. Interior lighting arrangement (23) according to Claim 7 wherein - the interior surface (25) is a surface of an instrument panel (6), a center console formed therein, a door railing or door lining of a vehicle door, a rear lining and / or a vehicle seat back of a vehicle seat arranged in the vehicle interior (2); and / or - the interior lighting arrangement (23) furthermore an instrument panel, one or more vehicle seats arranged in the vehicle interior (2) and / or one or more front or rear vehicle doors and / or A, B or C-pillars and / or a headliner and / or comprises a rear panel that delimit the vehicle interior (2), and at least one of the interior light sources (27) on the instrument panel, on one of the A, B or C pillars, on a door sill of one of the vehicle doors is arranged on one of the vehicle seats or on its headrest, on the roof lining and / or on the rear panel. Interior lighting arrangement (23) according to Claim 7 or 8th , in which the reflection section (26) of the interior surface (25) has an invisible light (24) applied in or on the interior surface (25) on the vehicle interior side, reflective and / or diffusely scattering layer, coating or film, for example made of a paint, which is preferably transparent to visible light or has a conventional color. Vehicle, in particular a motor vehicle (1), comprising: - A vehicle interior (2) which is at least partially delimited by a windshield (5), a side window (16) and an interior surface (25); - At least one interior lighting arrangement (9, 17, 23) according to one or more of the preceding claims; as - preferably also at least one detection device, in particular a gesture camera, which is designed and arranged to detect the invisible light (11, 19, 24) that is detected by objects located in the vehicle interior (2), which are detected by the at least one interior lighting arrangement (9, 17, 23) are illuminated, is reflected.

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