METHOD AND SYSTEM FOR ADJUSTING THE LIGHTING CONDITIONS OF A VEHICLE AND VEHICLE

Description

[0001] The invention relates to a method for adjusting lighting conditions in a vehicle. A control device is provided with a desired lighting value in an interior of the vehicle. In a further method step, light is emitted from at least one light source depending on the desired lighting value specified by the control device. In a further method step, a current lighting value in the interior is detected by a detection device. Furthermore, the current lighting value is adjusted to the predetermined desired lighting value if a deviation of the current lighting value from the predetermined desired lighting value is detected. The invention also includes a system operable according to the method according to the invention, as well as a vehicle having such a system.

[0002] The gaze of passengers in a vehicle is not necessarily directed outwards at their surroundings. With the steadily increasing number of autonomously driven routes, the driver can also increasingly devote himself to alternative activities inside the vehicle, such as reading or relaxing. Unlike in the living room at home, the lighting conditions inside a moving vehicle are anything but constant. Changes in direction, buildings and / or at night the headlights of other vehicles and / or street lighting cause irregular, particularly strong, fluctuations in the interior light. When the sun is low in the sky, trees in avenues can create a veritable stroboscopic effect. This disrupts various activities or tasks inside the vehicle.

[0003] Depending on changing environmental parameters, it is known from the general state of the art to monitor the vehicle's surroundings and thus to control devices in the vehicle, such as interior lighting and / or air conditioning control.

[0004] For example, DE 103 38 060 A1 describes a sensor device for a vehicle with at least one light sensor for monitoring an environment of the vehicle and a control unit which generates a control signal for further use from the measured values ​​of the light intensity of the light sensor.

[0005] An alternative approach to controlling lighting in the interior of a vehicle is proposed in DE 10 2016 203 164 A1 as a light therapy lighting system for a vehicle interior. The light therapy lighting system comprises a lighting device with at least one light source arranged within a vehicle interior and configured to illuminate a usable area within the vehicle interior, at least one sensor unit configured to detect the illuminance in this usable area, and a control unit configured to receive the illuminance detected by the sensor unit and to control the brightness of the at least one light source of the lighting device such that the illuminance detected by the sensor unit in the usable area corresponds to a target illuminance.

[0006] The disadvantage of such devices is that they have very little ability to counteract these natural fluctuations in interior light. Furthermore, simply adjusting the illuminance often creates an unnatural effect, which can significantly impair user comfort.

[0007] The published patent applications DE 10 2013 016817 A1, KR 2012 0051810 A, and DE 10 2016 213 629 A1 also each disclose methods for adjusting lighting conditions in vehicle interiors. From the published patent application DE 10 2017 001239 A1, it is known to adapt the luminosity of headlights to the ambient light.

[0008] The object of the present invention is therefore to improve a method and a system for adjusting the lighting conditions of a vehicle in such a way that it counteracts light fluctuations in the interior of the vehicle particularly reliably and thus increases the comfort of using the vehicle.

[0009] This object is achieved by a method and a system having the features of the independent patent claims. Advantageous embodiments with expedient and non-trivial refinements of the invention are specified in the dependent patent claims.

[0010] To achieve this object, the invention provides a method for adjusting the lighting conditions of a vehicle with the features of claim 1. "Adjusting" refers in particular to regulating, adjusting, or controlling the lighting conditions. "Lighting conditions" refers in particular to the conditions relating to the light or to the lighting. In one method step, a lighting target value in or for an interior of the vehicle is specified or stored in a control device. In other words, a value of a lighting parameter, which in particular determines the lighting conditions of the vehicle, that the interior of the vehicle should have can be specified to the control device. For this purpose, the control device can, for example, have a memory in which the lighting target value is stored. The control device can also be designed, for example, as an ECU - Electronic Control Unit.

[0011] In a further method step, light is emitted by at least one light source depending on the desired illumination value specified by the control device. In other words, the control device can be configured to control the at least one light source such that the desired illumination value in the interior of the vehicle is set or met by the light emitted or emitted by the at least one light source. "Light" refers in particular to light or radiation in the visible wavelength range. The control device has the advantage that it can be used to switch or control the at least one light source particularly quickly, reliably, and without limitation.

[0012] Particularly preferably, it can be provided that a predetermined area is illuminated or illuminated by the at least one light source. The predefined illumination target value can refer to this predetermined area. The term "predetermined area" refers, in particular, to a part of the space or spatial area or spatial section of the interior of the vehicle. For example, the predetermined area can be the light cone generated by the at least one light source. Particularly preferably, an area of ​​a seat, such as the driver's seat, the front passenger seat, or the rear seat, is illuminated or illuminated by the at least one light source. For this purpose, the at least one light source can be arranged on a roof lining of the vehicle, in particular in the area of ​​a seat or seating area, such as the driver's seat, the front passenger seat, or the rear seat.

[0013] In a further method step, a current lighting value in the interior can be detected by means of a detection device. In other words, the detection device can be positioned in the interior such that the detection device can detect, measure, or record the current lighting value in the interior. For this purpose, the detection device can, for example, have one or more sensors. The sensor can, for example, be designed as a camera, a light sensor, or a color sensor. The detection device is particularly preferably arranged on a roof liner of the vehicle, in particular in the region of a seat or seating location, such as the driver's seat, the front passenger seat, or the rear seat. The detection device is advantageously arranged next to the at least one light source.The detection device allows the current lighting value in the interior of the vehicle to be recorded particularly easily and reliably.

[0014] Subsequently, the current illumination value is set to the predefined illumination target value if a deviation of the current illumination target value from the predefined illumination target value is detected. In other words, if the detection device and / or the control device detects that the current illumination value does not correspond to the predefined illumination target value, the current illumination value is adjusted. For this purpose, the control device can control the at least one light source. In other words, the current illumination value can be adjusted by dynamically controlling the at least one light source. Particularly preferably, the at least one light source can be controlled in such a way, or the current illumination value can be adjusted in such a way, that the lighting conditions in the interior of the vehicle can be kept virtually constant.This has the advantage that fluctuations in the light or the current lighting value in the interior can be compensated for by a regulated interior light - at least one light source - and thus the comfort in the interior, especially for the driver and / or the passengers, can be particularly increased.

[0015] The invention is characterized in that an ambient luminosity value in an environment of the vehicle is detected by means of a further detection device. The further detection device can be arranged on the vehicle and / or directed towards an environment of the vehicle. The detection device can have one or more sensors for detecting the ambient luminosity value. If the further detection device has, for example, a plurality of sensors, these can preferably be distributed on the body of the vehicle, in particular at predetermined distances from one another. The sensor can be designed, for example, as a camera or as a light sensor or as a rain sensor or as a color sensor. The ambient luminosity value comprises a light color which is detected in the environment of the vehicle.Furthermore, the current illumination value is adjusted such that a light color of the emitted light in the interior of the vehicle is adjusted to a light color detected in the vehicle's surroundings. In other words, the control device can be configured to control the at least one light source depending on the light color or colors detected in the surroundings such that the light source emits light in a light color of the ambient light. In other words, the compensating light of the light source can have the same light color as the ambient light.

[0016] Over the course of the day, the ambient light can have one or more light colors, which can be detected in particular by the additional detection device. The light color or colors can be stored in the control device. The lighting setpoint can have one or more predetermined light colors. The light color of the current lighting value can be adjusted to a predetermined light color of the ambient light of the lighting setpoint or a current light color of the ambient light. If the current lighting value is adjusted to a current light color, the control device can compare the detected light color of the ambient light with the light colors stored in it and select the light color from this.The light color to be set can, for example, be detected from a current time and / or by sensors or the sensors of the additional detection device or can also be specified by the user or driver.

[0017] Adjusting the light color offers the advantage of adjusting the interior lighting to be particularly realistic or true to the surroundings. This process also allows the current lighting level to be set in a particularly simple and reliable manner. Furthermore, the process can compensate for light fluctuations particularly well, thus increasing comfort for the driver and passengers of the vehicle.

[0018] An advantageous embodiment provides that the illumination value further comprises a brightness value, wherein the detected current brightness value is set to a predetermined brightness value of the illumination target value if a deviation of the current brightness value from the predetermined brightness value is detected. In other words, a brightness or light intensity or illuminance in the interior of the vehicle can be adjusted. In particular, an emitted amount of light by the at least one light source in the interior can be regulated depending on the predetermined amount of light or brightness in the interior. The amount of light can be regulated such that the brightness in the interior remains constant despite changing light changes or lighting conditions. The brightness can be detected by the detection device.

[0019] A specific exemplary embodiment will be discussed in more detail below. At least one light sensor of the detection device is positioned or arranged in the interior of the vehicle such that it can detect the brightness of the interior perceived by the driver. Such a sensor or the detection device is particularly preferably positioned near or in a region of the driver's head and / or has an orientation and / or a detection range that corresponds to the driver's field of vision. For example, the sensor can be arranged on a roof liner of the vehicle. The sensor can be arranged in the vehicle in such a way that window areas, for example those of the instrument panel, are not included. By regulating the setting of the at least one light source, in particular by the control device, a constant brightness and / or a constant light color can be designed.At least one light source can be controlled to illuminate and / or color-adjust the sensor's detection area and thus also the driver's field of vision. Particularly preferably, the light source, like the sensor, is positioned near or within the driver's range. This minimizes or reduces visible shadows.

[0020] Advantageously, if the detected brightness value in the interior exceeds a brightness threshold, the control device activates a dimming device of the vehicle to darken the interior. "Brightness threshold" refers in particular to a limit value or a maximum value. For example, the brightness threshold can be adjusted to a maximum brightness of the ambient light or sunlight. Thus, if the predefined brightness value in the interior is below the brightness threshold, the control device activates a dimming device of the vehicle to darken or darken the interior of the vehicle. In other words, if the predefined brightness value cannot reach the brightness threshold by controlling the at least one light source, the control device activates the dimming device.The darkening device preferably comprises at least one blind or roller blind of the vehicle, which is arranged on a window of the vehicle, and / or an electrowetting display, which is arranged in particular on at least one window of the vehicle, preferably on the windshield and / or on the rear window and / or on one or more side windows of the vehicle, and / or which covers at least one window at least partially, i.e. completely or partially, and / or at least one electrochromic pane, which is preferably designed as a windshield and / or as a rear window and / or as one or more side windows of the vehicle. To darken the interior, the control device can actuate the blind in such a way that the blind covers or covers the window at least partially, i.e. completely or partially.Additionally or alternatively, the control device can be configured to darken the window by controlling the electrochromic pane in such a way that the degree of transparency of the pane is adjusted by the control device. In other words, by controlling the electrochromic pane, the pane can be adjusted or switched to be translucent, partially translucent, or opaque. Controlling the vehicle's darkening device offers the advantage that the lighting conditions in the vehicle's surroundings can be addressed in a particularly simple and reliable manner. Furthermore, the desired lighting level in the vehicle's interior can be met particularly easily, even in brighter outside light conditions.

[0021] The invention is further based on the realization that, especially when driving at night, a driver may be briefly, particularly severely, dazzled by the headlights of another vehicle. Possible causes for this may include topological conditions and / or inattention, such as accidentally driving with high beams on, and / or road conditions, such as reflective water surfaces. In such a case, the human eye reacts by adapting to a bright environment. Once the bright light stimulus has passed, the opposite adaptation to a dark environment occurs.Both processes take time, with adaptation to bright surroundings being carried out much more quickly than adaptation to dark surroundings, resulting in a period of several seconds to one minute after glare, particularly depending on the intensity of the glare, in which the driver sees significantly worse than usual.

[0022] For this purpose, the invention provides that the vehicle further comprises a headlight device, wherein the headlight light emitted by the headlight device is adjusted by the control device as a function of the current illumination value. Additionally or alternatively, the headlight light can be adjusted as a function of the ambient luminous value and / or the predetermined illumination target value and / or a driving operation of the vehicle. In particular, the light emitted by the headlight device, which comprises at least one headlight, particularly preferably two headlights of the vehicle, is directed at the surroundings, in particular at an area in front of the vehicle in the direction of travel of the vehicle. In other words, the light emitted by the headlight device is directed at a front area in front of the vehicle. The headlight light can be designed as a low beam or as a high beam.By adjusting the emitted headlight light, the control device can react particularly reliably to different influences external or internal to the vehicle, thereby increasing comfort for a driver and / or passengers of the vehicle.

[0023] Advantageously, before or during a change from autonomous driving mode to non-autonomous driving mode of the vehicle, the control device sets the brightness of the headlight light emitted by the headlight device to a higher level than the brightness of the current illumination value or the predefined illumination setpoint in the interior of the vehicle if the further detection device detects that the ambient light has a higher brightness than the current illumination value or the predefined illumination setpoint in the interior of the vehicle. In other words, the control device can be configured to increase the vehicle's area lighting after the driver has assumed the driving task.Particularly preferably, the light emitted by the headlight device can be adapted to the ambient luminous value by the control device if the current illumination value or the predefined illumination target value in the interior is lower or smaller than the ambient luminous value. For example, the control device can intensify the area lighting if the driver is dazzled, in particular if dazzled by oncoming traffic. Particularly preferably, the headlight device comprises a headlight that can provide more light for a predetermined period of time at a predetermined value that is greater than a headlight illumination threshold. In other words, the headlight can be configured to provide more or stronger light than required by the normal light distribution adapted to the driving situation.The additional light is emitted with the same light distribution as the normal light distribution, adapted to the driving situation. This light distribution can be, for example, a low beam, a country light, a high beam, or a masked permanent high beam.

[0024] The end of autonomous driving mode or a transition from autonomous driving mode to non-autonomous driving mode can be detected by the detection device, for example, when a driver of the vehicle intervenes in the current driving maneuver. Alternatively, the end of autonomous driving mode or a transition from autonomous driving mode to non-autonomous driving mode can be detected if the vehicle is only in autonomous driving mode on a predetermined route, which can be stored in the vehicle's navigation system. Once the end of the predetermined route is reached, a transition to non-autonomous driving mode occurs. Autonomous driving mode is therefore terminated at the end of the predetermined route.

[0025] The emitted headlight light can preferably be adjusted for a predetermined period of time. This allows the driver to be assisted by a brighter headlight from the headlight device during a predetermined period of time—the predetermined period of time. The predetermined period of time or duration can be between 1 s and 60 s or more than 60 s. After the predetermined period of time has elapsed, the control device can be configured to control the headlight device such that the headlight light emitted by the headlight device is reset, in particular reduced, to the original brightness or luminous intensity or light quantity or light intensity.In other words, after the expiration of the predetermined period of time, the control device can be configured to reset the headlight device to the original setting, in particular a headlight illumination value of a low beam or high beam of the headlight device.

[0026] According to an advantageous development, it is provided that a power of the headlight device and / or a brightness of the headlight light emitted by the headlight device is reduced during autonomous driving of the vehicle to a predetermined headlight illumination target value, which is in particular lower than a brightness of a headlight illumination value of a low beam or high beam, compared to a non-autonomous driving operation. In other words, the control device can be configured to reduce the power and / or the brightness of the headlight light during autonomous driving or driving mode of the vehicle below an original setting of a headlight illumination value of a low beam or high beam of the headlight device. In other words, the exterior light or the area lighting can be reduced during autonomous driving of the vehicle.The reduction in exterior light or the apron lighting can only be reduced to the extent necessary to ensure visibility, safety, and the vehicle's camera function(s). This can save energy, particularly during autonomous driving.

[0027] A further advantageous embodiment provides that, when switching from autonomous driving mode to non-autonomous driving mode, the light emitted by the headlight device is adapted to the predefined lighting target value in the interior of the vehicle by the control device. This results in the advantage that the driver or a passenger of the vehicle can be helped to become accustomed to the ambient lighting conditions more quickly, especially at night or when the lighting conditions in the surroundings of the vehicle are darker than in the interior. Particularly preferably, the control device can control the headlight device such that the light emitted by the headlight device is adapted to the predefined lighting target value in the interior of the vehicle for a predetermined period of time. The predetermined period of time can be between 1 s and 60 s or more than 60 s.After the predetermined time period has elapsed, the control device can be configured to control the headlight device such that the light emitted by the headlight device is reset to the original luminous intensity, quantity of light, or light intensity, in particular increased or reduced. In other words, after the predetermined time period has elapsed, the control device can be configured to reset the headlight device to the original setting, in particular a headlight illumination value of a low beam or high beam of the headlight device.

[0028] An advantageous development provides that, before switching from autonomous driving mode to non-autonomous driving mode of the vehicle, the lighting setpoint is reduced to a further lighting setpoint that is lower than the lighting setpoint. In other words, it can additionally or alternatively be provided that, before switching from autonomous driving mode to non-autonomous driving mode, the brightness of the current lighting value or the set lighting setpoint is reduced by the control device. For example, the control device can be configured to reduce the interior brightness before taking over the driving task after driving a route autonomously.This has the advantage that the driver or a passenger of the vehicle can be helped to get used to the lighting conditions in the environment more quickly, especially at night or when the lighting conditions in the area surrounding the vehicle are darker than in the interior.

[0029] Advantageously, the control device can be configured to adjust additional light sources, particularly in the area of ​​the vehicle doors, to the specified lighting target value. For example, the control device can activate the additional light source(s) when the vehicle door is opened. The control optimizes the brightness of the viewing areas not only with regard to maintaining a constant color and / or brightness within the viewing area, but also with regard to safety when transitioning between different viewing areas, especially inside and / or outside, for example, when entering or exiting the vehicle.

[0030] The headlight system advantageously comprises at least one LED headlight, which is in particular equipped with a current regulator. In addition, the LED technology can adjust the operation of the LED headlight above the standard value. The maximum and / or duration of an overload of the LED headlight depends essentially on the design and temperature management. Thus, a dazzled driver can be briefly supported immediately after being dazzled by more light in the front area, i.e., the headlight beam. The headlight beam can be provided by means of an, in particular brief, override of the at least one LED headlight. This does not require the installation of additional components or light sources.Additionally or alternatively, it can be provided that the vehicle or the headlight device has at least one further light source, which is arranged in particular in the region of the headlights, wherein the at least one further light source has a higher light output than the headlights of the headlight device. In other words, an additional light output can be installed in the headlights. The at least one further light source can be controlled by the control device, in particular for adjusting the headlight light.

[0031] For example, the headlight device can comprise an LED system designed for higher light outputs than in normal operation. The LED system can be dimmed, i.e., operated at a proportional output. Additionally or alternatively, the LED system can be designed, in particular, for 100% light output, but whose control allows the system to be overridden for a predetermined period of time, in particular a brief override. Additionally or alternatively, the headlight device can have multiple light sources that generate the same light distribution, of which a variable number is switched and / or dimmed depending on the situation and / or function.

[0032] Additionally or alternatively, the headlight system can be configured to provide a masked permanent high beam. This allows the headlight system to adjust the light distribution according to the traffic situation. This also allows the driver to be provided with more light after being dazzled by an oncoming vehicle, particularly when the ambient light is brighter than in the vehicle's interior.

[0033] Additionally or alternatively, the headlight system can have an adaptive lighting system designed to reduce or adjust the amount of light, particularly in certain driving situations. For example, the adaptive lighting system is designed to prevent self-glare caused by reflection or to make electric vehicles more efficient. If, for example, glare from other vehicles occurs in a situation with dimmed headlights, there is also the option of increasing the brightness to compensate for the glare.

[0034] The appropriate design of the headlight system has the advantage that immediately after glare, the brightness of the optimal light distribution can be increased overall in order to compensate for the delayed dark adaptation.

[0035] Based on measurements from one or more sensors, such as a rain / light sensor and / or a camera system and / or an illuminance sensor in the vehicle interior, the illuminance at the driver's eye can be calculated or determined. If this value exceeds a certain threshold and / or drops suddenly after a prolonged period of elevated levels, it can be assumed that the driver's perception is impaired for a certain period of time due to the eye's adaptation to the bright environment or the time required to adapt to darker environments. During this period, the system can make more light available. The additional amount of light is provided either immediately after glare occurs or increasing with the degree of glare. The amount of light can then be reduced in accordance with the average adaptation curve of the human eye.After glare, the light output decreases preferentially according to the adaptation curve of the human eye. This adaptation curve can be stored in the control device.

[0036] The invention also includes a further method for adjusting lighting conditions in a vehicle. In this method, a headlight illumination setpoint of a headlight device is first specified to a control device. The headlight illumination setpoint specifies, in particular, the quantity of light or luminous intensity and / or brightness that the light emitted by the headlight device should have. Furthermore, the headlight device emits light depending on the headlight illumination setpoint specified by the control device. Subsequently, a current ambient luminous value in the area surrounding the vehicle is detected by means of a detection device. Furthermore, an illumination value in an interior of the vehicle is detected by means of a further detection device.Finally, the headlight illumination setpoint is increased, in particular for a predetermined period of time, to a predetermined value, in particular a maximum value, if a detection device detects that the illumination value is lower than the ambient luminance value. In particular, the predetermined value is above the headlight illumination setpoint and / or the illumination value.

[0037] Finally, the invention also includes a system for adjusting lighting conditions of a vehicle with the features of claim 10. The system comprises a control device to which a desired lighting value in an interior of the vehicle is predetermined. Furthermore, the system comprises at least one light source configured to emit light as a function of the desired lighting value predetermined by the control device. Furthermore, the system has a detection device configured to detect a current lighting value in the interior. The control device is configured to adapt the current lighting value to the predetermined desired lighting value if a deviation of the current lighting value from the predetermined desired lighting value is detected. In particular, the current lighting value is adjusted by controlling the at least one light source.The system is characterized in that the system comprises a further detection device configured to detect an ambient luminous value in the surroundings of the vehicle, wherein the ambient luminous value comprises a light color. Furthermore, the control device is configured to adjust the current illumination value such that a light color of the emitted light in the interior of the vehicle is adapted to the light color detected in the surroundings of the vehicle. Furthermore, the vehicle comprises a headlight device, wherein the control device is further configured to adjust the headlight light emitted by the headlight device depending on the current illumination value.

[0038] Advantageously, the light source has at least two light sources, each having a different primary color. In other words, at least two light sources can be installed which have a different primary color. The light sources can be designed, for example, as LEDs or as a light source with a color filter or as a fluorescent tube or as an OLED. For example, a first light source of the at least two light sources can output or emit light with a light color of up to 2700 K, which is perceived in particular as yellow light. A second light source of the at least two light sources can output or emit light with a light color between 2700 K and 6500 K, which is perceived in particular as white or blue light.

[0039] The invention also includes a vehicle with a system for adjusting lighting conditions with the features of claim 12. Advantageously, the vehicle is designed as a motor vehicle, in particular as a passenger car, or as a train or as a subway or as a cable car or as an aircraft or as a ship.

[0040] The invention also includes further developments of the system according to the invention, the vehicle according to the invention, and the further method, which have features already described in connection with the further developments of the method according to the invention. For this reason, the corresponding further developments of the system according to the invention and the vehicle according to the invention are not described again here.

[0041] An exemplary embodiment of the invention is described below. It shows: Fig. 1 schematically shows the method steps of a method for adjusting the lighting conditions of a vehicle; and Fig. 2 shows a schematic representation of the vehicle with a system for adjusting the lighting conditions of the vehicle.

[0042] The exemplary embodiments explained below represent preferred embodiments of the invention. In the exemplary embodiments, the described components of the embodiments each represent individual features of the invention that should be considered independently of one another. Furthermore, the described embodiments can also be supplemented by further features of the invention already described.

[0043] In the figures, functionally identical elements are provided with the same reference numerals.

[0044] Fig. 1 shows in a schematic flow diagram the individual process steps of the method for adjusting the lighting conditions of a vehicle 10. Fig. 2 shows schematically the vehicle 10 with a system 12 for adjusting lighting conditions of the vehicle 10.

[0045] In connection with Fig. 1 and Fig. 2 The method and the system 12 for adjusting the lighting conditions of the vehicle 10 will be discussed in more detail. In this case, the vehicle 10 is designed as a motor vehicle, in particular as a passenger car.

[0046] In the method, a lighting setpoint BS is initially specified in a first method step S1. For this purpose, this lighting setpoint BS is specified in a control device 14 of the vehicle 10 or stored therein. For example, the control device 14 can have a memory (not shown in the figures) in which the lighting setpoint BS can be stored. The lighting setpoint BS specifies, in particular, which lighting conditions should prevail in the vehicle 10. In other words, the lighting setpoint BS is specified for an interior 16 of the vehicle 10.

[0047] In a second method step S2, light, in particular in the visible wavelength range, is emitted by at least one light source 18 as a function of the desired illumination value BS specified by the control device 14. In other words, light or radiation is emitted by the at least one light source in such a way that the desired illumination value BS is met or guaranteed in the interior 16 of the vehicle 10. The light source 18 can have one or more light sources. The light source(s) can be designed as an LED or as a light source with a color filter or as a fluorescent tube or as an OLED. The at least one light source 18 is arranged in the interior 16 of the vehicle 10, preferably on a roof lining, in particular in a region of a seat, such as the driver's seat, front passenger seat, or rear seat.

[0048] In a further third method step S3, a current illumination value BW in the interior 16 is detected by a detection device 20 of the system 12. For this purpose, the detection device 20 can, for example, have one or more sensors. The sensor can be designed, for example, as a camera or as a light sensor. Particularly preferably, the detection device 20 is arranged in the interior 16 of the vehicle 10 on a roof lining, in particular in a seat area, such as the driver's seat, front passenger seat, or rear seat.

[0049] Subsequently, in a method step S4, the current illumination value BW is set to the predefined illumination setpoint BS by the control device 14 if a deviation of the current illumination value BW from the predefined illumination setpoint BS is detected by the detection device 20 or the control device 14. To set the illumination setpoint BS, the control device 14 controls the at least one light source 18.

[0050] When setting the illumination setpoint BS, the control device 14 can be configured to control the at least one light source 18 such that a brightness H or an intensity of the light emitted by the at least one light source 18 is adjusted or set in a method step S6 or a light color K of the light emitted by the at least one light source 18 is adjusted or set in a method step S5.

[0051] To adapt or adjust the light color, an ambient luminous value in an environment 24 of the vehicle 10 is detected by a further detection device 22. A light color K of the ambient light is detected as the ambient luminous value. In method step S5, the current illumination value BW is then adjusted such that a light color K of the light emitted by the at least one light source 18 in the interior 16 of the vehicle 10 is adapted to a light color K detected in the environment 24 of the vehicle. For this purpose, the at least one light source 18 has at least two light sources, each of which has a different primary color. In other words, at least two light sources can be installed, each of which has a different primary color.For example, a first light source of the at least two light sources can emit or output light with a light color of up to 2700 K, which is particularly perceived as yellow light. A second light source of the at least two light sources can emit or output light with a light color between 2700 K and 6500 K, which is particularly perceived as white or blue light.

[0052] To adjust the brightness H in the interior 16 of the vehicle 10, the desired lighting value can further comprise a predetermined brightness value H. The detection device 20 checks whether the detected current brightness value in the interior 16 of the vehicle 10 corresponds to the predetermined or predefined brightness value of the desired lighting value BS. If the detection device 20 or the control device 14 detects that the current brightness value deviates from the predefined brightness value, the brightness value is set to the predefined brightness value. For this purpose, the control device 14 controls the at least one light source 18, which then increases or decreases a light intensity, brightness, or quantity of the emitted light, in particular until the predefined brightness value is set.

[0053] If the detected brightness value H in the interior 16 exceeds a brightness threshold value, which may be the case, for example, if the ambient brightness is brighter or stronger than it is possible for the at least one light source 18 to emit the output light, the control device 14 can control a darkening device 26 of the vehicle 10 to darken the interior 16.

[0054] For this purpose, the darkening device 26 can comprise at least one blind arranged on a window of the vehicle 10 and / or an electrochromic pane. To darken the interior 16, the control device 14 can, for example, control the blind such that the blind at least partially, i.e., completely or partially, covers or covers the window. Additionally or alternatively, the control device 14 can be configured to darken the window by controlling the electrochromic pane such that a degree of transparency of the pane is adjusted by the control device 14. In other words, by controlling the electrochromic pane, the pane can be set to be translucent, partially translucent, or opaque.

[0055] In order that a driver or a vehicle occupant is not only exposed to constant or uniform lighting conditions in the interior 16 of the vehicle, it can additionally or alternatively also be provided that the vehicle 10 or the system 12 further comprises a headlight device 28, wherein the light emitted by the headlight device 28, the headlight light, is adjusted in a method step S7 as a function of the ambient luminous value and / or the predetermined desired illumination value BS or the current illumination value BW and / or a driving operation of the vehicle 10.

[0056] In this case, the control device 14 can control the headlight device 28 such that the headlight light is amplified, for example, in the event of glare or immediately after the driver has assumed the driving task. Additionally or alternatively, the control device 14 can control the headlight device 28 such that the interior brightness, in particular the desired illumination value, is reduced even before the driver assumes the driving task after autonomously driven routes. Additionally or alternatively, the control device 14 can control the headlight device 28 such that the headlight light or an exterior light of the vehicle 10 is reduced during autonomous driving, in particular while ensuring the visibility and the functions of the additional detection device 22.Additionally or alternatively, the control device 14 can control the headlight device 28 in such a way that a light distribution, in particular a color and / or a brightness, is changed, for example on lonely long journeys or in urban areas under the aspect of fatigue and the fact that a driver who is adapted to the darkest possible also sees more in the areas that cannot be illuminated by the light cone of the headlights.

[0057] Overall, the example shows how the invention provides lighting that compensates for light fluctuations. List of reference symbols

[0058] 10Vehicle 12System 14Control device 16Interior 18Light source 20Detection device 22Further detection device 24Environment 26Darkening device 28Headlight device S1First process step S2Second process step S3Third process step S4Fourth process step S5Fifth process step S6Sixth process step S7Seventh process step

Claims

1. Method for setting light conditions of a vehicle (10) and for providing illumination which compensates for light fluctuations in an interior (16) of the vehicle (10), comprising: - specifying an illumination target value (BS) of a control device (14) in the interior (16); - emitting light through at least one light source (18) arranged in the interior (16) in dependence on the illumination target value (BS) specified by the control device (14); - capturing a current illumination value (BW) in the interior (16) using a capture device (20); - setting the current illumination value (BW) to the specified illumination target value (BS) by controlling the at least one light source (18) if a deviation of the current illumination value (BS) from the specified illumination target value (BS) is detected; - capturing an ambient lighting value in a vicinity (24) of the vehicle (10) using a further capture device (22), wherein the ambient lighting value comprises a light colour (K) of the ambient light, - setting the current illumination value (BW) by controlling the at least one light source (18) in such a way that a light colour (K) of the emitted light in the interior (16) of the vehicle (10) is adapted to a light colour (K) detected in the vicinity (24) of the vehicle (10), characterized in that - the vehicle (10) further comprises a headlamp device (28), wherein the control device (14) is used to set the headlamp light emitted by the headlamp device (28) in dependence on the current illumination value (BW) in such a way that light fluctuations in the interior of the vehicle are compensated for and a comfort level for a driver or passenger of the vehicle (10) during use of the vehicle (10) is increased.

2. Method according to Claim 1, characterized in that the illumination value (BW) further comprises a brightness value (H), wherein the captured current brightness value (H) is set to a specified brightness value of the illumination target value (BS) if a deviation of the current brightness value (H) from the specified brightness value is detected.

3. Method according to Claim 2, characterized in that, if the captured brightness value (H) in the interior (16) exceeds a brightness threshold value, the control device (14) controls a darkening device (26) of the vehicle (10) for darkening the interior (16).

4. Method according to Claim 3, characterized in that the darkening device comprises a blind of the vehicle (10), which is arranged at a window of the vehicle (10), and / or an electrowetting display, which is arranged in particular at at least one window of the vehicle, preferably at the windscreen and / or at the rear window and / or at one or more side windows of the vehicle, and / or an electrochromic window of the vehicle (10), which is preferably in the form of a windscreen and / or a rear window and / or one or more side windows of the vehicle, wherein, when controlling the electrochromic window and / or the electrowetting display, a degree of transparency of the window and / or a light transmission of the window is set by the control device (14).

5. Method according to any of the preceding claims, characterized in that the control device (14) is used to set the headlamp light emitted by the headlamp device (28) in dependence on the ambient lighting value and / or the specified illumination target value (BS) and / or a driving mode of the vehicle (10).

6. Method according to Claim 5, characterized in that before or during a change from an autonomous driving mode to a non-autonomous driving mode of the vehicle (10), a brightness of the headlamp light emitted by the headlamp device (28) is set by the control device (14) to be higher than a brightness of the current illumination value (BW) or the specified illumination target value (BS) in the interior (16) of the vehicle (10) if the further capture device (22) detects that the ambient light has a higher brightness than the current illumination value (BW) or the specified illumination target value (BS) in the interior (16) of the vehicle (10).

7. Method according to Claim 5, characterized in that a power of the headlamp device (28) and / or a brightness of the headlamp light emitted by the headlamp device (28) is reduced in an autonomous driving mode of the vehicle (10) to a predetermined headlamp illumination target value which in particular is lower than a brightness of a headlamp illumination value of a low beam or high beam with respect to a non-autonomous driving mode.

8. Method according to Claim 5, characterized in that, during a change from an autonomous driving mode to a non-autonomous driving mode, the light emitted by the headlamp device (28) is adapted to the specified illumination target value (BS) in the interior (16) of the vehicle (10) using the control device (14).

9. Method according to any of the preceding claims, characterized in that, before a change takes place from an autonomous driving mode to a non-autonomous driving mode of the vehicle (10), the illumination target value (BS) is reduced to a further illumination target value, which is lower than the illumination target value.

10. System (12) for setting light conditions of a vehicle (10) and for providing illumination which compensates for light fluctuations in an interior (16) of the vehicle (10), comprising: - a control device (14), to which an illumination target value (BS) in the interior (16) is provided; - at least one light source (18), which is arranged in the interior (16) and is configured to emit light in dependence on the illumination target value (BS) specified by the control device (14); - a capture device (20), which is configured to capture a current illumination value (BW) in the interior (16), wherein - the control device (14) is further configured to adapt the current illumination value (BW) to the specified illumination target value (BS) by controlling the at least one light source (18) if a deviation of the current illumination value (BW) from the specified illumination target value (BS) is detected, wherein - the system (12) comprises a further capture device (22), which is configured to capture an ambient lighting value in a vicinity (24) of the vehicle (10), wherein the ambient lighting value in the vicinity (24) comprises a light colour (K), and wherein - the control device (14) is further configured to set the current illumination value (BW) by controlling the at least one light source (18) in such a way that a light colour (K) of the emitted light in the interior (16) of the vehicle (10) is adapted to the light colour detected in the vicinity of the vehicle, characterized in that - the vehicle (10) further comprises a headlamp device (28), wherein the control device (14) is further configured to set the headlamp light emitted by the headlamp device (28) in dependence on the current illumination value (BW) in such a way that light fluctuations in the interior of the vehicle are compensated for and a comfort level for a driver or passenger of the vehicle (10) during use of the vehicle (10) is increased.

11. System (12) according to Claim 10, characterized in that the at least one light source (18) comprises at least two light-emitting means, which each exhibit a different basic colour.

12. Vehicle (10) comprising a system (12) for setting light conditions of the vehicle (10) according to Claim 10 or 11.

13. Vehicle (10) according to Claim 12, characterized in that the vehicle (10) is a motor vehicle, in particular a passenger car, or is a train or an underground train or a gondola lift or an aircraft or a ship.