DE102016203164A1 - Light therapy lighting system for a vehicle interior - Google Patents

Abstract

The invention relates to a light therapy lighting system (10) for a vehicle interior (40) of a vehicle (11), comprising a lighting device (20) with at least one light source (22) which is arranged inside a vehicle interior (40) and designed to be To illuminate useful area (32) within the vehicle interior (40), at least one sensor unit (30), which is adapted to detect the illuminance in this Nutzbereich (32), and a control unit (60) which is adapted to that of to receive the illumination intensity detected by the sensor unit (30) and to regulate the brightness of at least one light source (22) of the illumination device (20) so that the illumination intensity detected by the sensor unit (30) in the useful region (32) corresponds to a desired illumination intensity. The viewing direction of the user (44) is switched off by a further sensor unit (31) and light sources of the lighting device are switched off in the spatial areas considered by the user (44) or reduced in their intensity.

Description

The present invention relates to a phototherapy lighting system for a vehicle interior which is capable of alleviating depression-induced depression (so-called "seasonal affective depression") and generally improving well-being.

Clinical depression is a mental illness characterized by a constant state of depression, lack of drive, joyless / sadness, low self-esteem and guilt. The suicide rate is significantly increased. Furthermore, the circadian rhythm is often disturbed and the patients suffer from excessive morning tiredness with simultaneous nocturnal sleep disturbances. Worldwide, about 350 million people are affected by this disease. Neurobiologically, depression is a disorder of the brain's neurotransmitter balance. In particular, the concentration of serotonin is reduced. Pharmacologically this can be countered by so-called serotonin reuptake inhibitors. One known drug is fluoxetine ("Prozac").

However, the concentration of serotonin can also be affected by the amount of light that falls on the retina. If the amount of light is too small, it can also lead to depression. Especially during the winter months, the number of hours of sunshine is low, and there is often a lack of time and opportunity to actually go to the sun. Therefore, this type of depression occurs especially in the winter months and in northern countries (e.g., Norway), which is why it is called a winter depression.

For these symptoms, a light therapy has proven itself as a treatment. In the process, the lack of natural sunlight is replaced by artificial light irradiation, thus normalizing the neurotransmitter household. For this purpose, a user sets himself for a period of about 20 to 60 minutes of a so-called daylight lamp whose illuminance is usually between 2500 and 10,000 lux, with the rule being the brighter the light, the shorter the treatment time can be. Nevertheless, many people find it difficult to integrate such treatment into their daily lives and to devote the necessary time to it.

From the DE 10 2009 051 260 A1 It is therefore known, for example, to perform light therapy with spectral light within a truck. For this purpose, a lighting device is arranged above a couch on which people can take rest breaks. Via a communication interface, the person can conduct a dialogue with a system which determines, for example based on questions, a suitable therapy and in particular a suitable duration and intensity of a light therapy. After the treatment, the person can evaluate the quality of the therapy, whereupon, if necessary, parameters for further treatments are changed and stored in a personal profile. Thus, the driver of a truck can use breaks for a light therapy within the vehicle.

Interior lighting for vehicles that vary parameters depending on the lighting are also known in the art. In the DE 10 2012 015 039 A1 an interior lighting for a vehicle is disclosed which comprises a lighting unit, a control device and a sensor device. The sensor device detects an object to be observed and the light intensity emitted by the latter and the control device is designed to control the emission characteristic of the lighting unit as a function of the detected light intensity. Also from the DE 10 2006 052 777 A1 is known interior lighting for vehicles, with a control device for controlling the light output of a light source. The control of the light emission takes place as a function of a characteristic parameter which is detected by a camera unit in the vehicle interior. The DE 43 30 721 C1 describes a method in which the illumination within a vehicle is controlled in dependence on a parameter detected by a sensor unit.

Against this background, the present invention has the object to provide an improved light therapy illumination system that exposes a user without much effort daylight-like light, in particular for performing a light therapy. In particular, it is the object of providing an individual and dynamically adaptable lighting situation in the vehicle interior for each user. This object is achieved by a light therapy illumination system having the features of claim 1 and by a light therapy illuminating system having the features of claim 4. Further advantages and features of the invention will become apparent from the dependent claims.

It should be noted that the features listed individually in the claims can be combined with each other in any technically meaningful manner and show further embodiments of the invention. The description additionally characterizes and specifies the invention, in particular in connection with the figures.

• – eine Beleuchtungsvorrichtung mit mindestens einer Lichtquelle, die innerhalb eines Fahrzeuginnenraums angeordnet und dazu ausgebildet ist, einen Nutzbereich innerhalb des Fahrzeuginnenraums zu beleuchten,
• – wenigstens eine Sensoreinheit, die dazu ausgebildet ist, die Beleuchtungsstärke in diesem Nutzbereich zu erfassen, und
• – eine Regeleinheit, die dazu eingerichtet ist, die von der Sensoreinheit erfasste Beleuchtungsstärke von dieser zu empfangen und die Helligkeit wenigstens einer Lichtquelle der Beleuchtungsvorrichtung so zu regeln, dass die von der Sensoreinheit erfasste Beleuchtungsstärke im Nutzbereich einer Soll-Beleuchtungsstärke entspricht.

The light therapy illumination system according to the invention is suitable for a vehicle interior of a vehicle and comprises

• A lighting device having at least one light source, which is arranged inside a vehicle interior and designed to illuminate a useful area within the vehicle interior,
• - At least one sensor unit which is adapted to detect the illuminance in this Nutzbereich, and
• A control unit which is set up to receive the illumination intensity detected by the sensor unit and to regulate the brightness of at least one light source of the illumination device in such a way that the illuminance detected by the sensor unit in the useful range corresponds to a desired illumination intensity.

In addition, the light therapy illumination system according to the invention comprises a further sensor unit, which is designed to detect a viewing direction of the user. The control unit is designed to evaluate the detected viewing direction of the user and to switch off the light sources of the lighting device in the space areas considered by the user or to reduce their intensity.

The brightness of a lighting device for performing a light therapy can be controlled dynamically and thereby adapted at least to the lighting conditions within the vehicle interior. The illumination device can emit white or differently colored light, wherein the brightness, also referred to as radiation power, the at least one light source is controllable. In particular, the lighting device is designed to alleviate winter depression and to increase the sense of well-being by exposing a user to bright light and, at best, effectively simulating daylight or sunlight. The light can be emitted continuously or in pulsating form. However, it is preferable to avoid emitting ultraviolet light because it may cause adverse effects such as increased cancer risk.

A useful area into which the lighting device radiates the light is located, in particular, at the height of the user's head so that the largest possible amount of light of the emitted light falls on the retina of a user. Preferably, the lighting device comprises a plurality of light sources, in particular LEDs or OLEDs, through which different useful areas can be illuminated. In one embodiment of the invention, at least one LED emits light in the wavelength range of 420 to 480 nm, so that blue light is generated. Preferably, the lighting device comprises a plurality of light sources, which are independently controllable.

In particular, the lighting device is arranged so that dazzling effects or reflections of the light sources on the windshield of the vehicle are avoided. For example, light sources are integrated in the floor, in the doors or in the pillars of the car. Preferably, the lighting device is arranged on the vehicle ceiling of the vehicle. It may be advantageous, for example, to integrate at least one light source of the lighting device in a sun visor of the vehicle. In this case, the user can align the sun visor and thus the light source so that their radiation is comfortable for him.

Furthermore, at least one illuminable operating element in the vehicle interior can serve as the light source of the lighting device. Here, for example, illuminated displays in the dashboard can be used as a light source. In particular, find illuminated controls such as the speedometer or the fuel gauge in addition as a light source in the context of the invention use. The lighting device may thus include various light sources, which together contribute to the illuminance within a defined useful range.

Furthermore, the light therapy illumination system comprises at least one sensor unit which is likewise arranged in the vehicle interior and which is suitable for detecting the illuminance in the useful area of the vehicle interior. The illuminance is defined as the luminous flux per area in the unit Lux. For example, this sensor unit is integrated in the headrest of a vehicle seat or attached to the vehicle ceiling. Preferably, the sensor unit is arranged in the upper region of the windshield or above it.

An associated control unit is configured to receive the corresponding data of the illuminance in the useful range from the sensor unit and to regulate the brightness of the at least one light source depending on the received illuminance. To further optimize the light therapy, a further input variable for regulating the at least one light source is included.

There is provided a further sensor unit which detects the viewing direction of the user. The further sensor unit is a suitable device, for example a camera system, with which the viewing direction and head position of the driver / user are detected at regular intervals and the Lighting is adjusted in the direction of space or space considered by the driver. For this purpose, the lighting system is preferably subdivided into a plurality of individually controllable areas which can be individually controlled by the control unit of the control unit. As a camera system, for example, the product faceLAB ^TM Seeing Machines can be used. An alternative system is the Eye Tracker technology "Fovio" from the same company. The sensor unit for detecting the line of vision is positioned so that the viewing direction can be detected in as many possible driver positions as possible. Preferably, the sensor unit for detecting the line of sight in the instrument panel or in the dashboard or is integrated in the steering wheel. If the system is used by inmates other than the driver, then further sensor units for detecting the viewing direction are preferably arranged in the interior of the vehicle, for example on the headrests of the front seats, in order to detect the viewing direction of users sitting in the rear seat.

But especially when driving a vehicle, the brightness should not be perceived as unpleasant and disturb the driver. The driver, as well as other road users must not be impaired in any way, and above all not blinded. Since glare effects only arise when light is actually directed in the viewing direction, the lighting device with its light sources is preferably designed to emit diffused light. At least one light source of the lighting device is then designed to emit diffused light. The detection of the line of sight of the driver is also advantageous for avoiding glare effects, then the area of space actually considered by the user can then be determined. The regulation of the brightness can then be such that no light source radiates directly in the viewing direction, whereby the safety of the driver and other road users is ensured.

According to the invention, in an alternative or supplementary embodiment of the invention, for optimizing the light therapy for a user, means for determining a treatment time are provided which record the treatment time already taken. If an optimal treatment time or a desired treatment time is reached, then means for switching off the lighting device enable the automatic shutdown. The control unit is set up to detect a light dose as a product of the illuminance in the useful area and the treatment time already taken, so that there is always information about the light dose that the user has already received. An optimal treatment time for increasing the well-being of a user results not from the radiant power with which the light sources emit light, but from the illuminance, which actually arrives over a certain time in the useful area in which the eyes of a person are. The product of the illuminance and the treatment time is called dose (light dose) and given in lux hours. Like any therapy, light therapy also has a therapeutic window that is limited by a minimum effective dose down. For optimal therapeutic effect, a dose of approximately 5,000 lux hours is usually required. In order to obtain such dosage, the treatment time can be reduced and the illuminance for it increased or vice versa. For example, a dose of about 5000 lux hours can be achieved by irradiation for 30 min with 10,000 lux, but also irradiation for 60 min with 5000 lux.

In particular, means for determining a target illuminance or a target treatment time by a user are provided. Together with the means for determining a treatment time can be adjusted depending on the light dose, the user has already received either the target illuminance or the target treatment time, so that the user receives a total sufficient light dose.

For example, therefore, the control unit includes a database, comprising different illuminances, which are selectable by a user as a target illuminance and thus fixed. These target illuminances are preferably assigned to corresponding treatment times, wherein this information is preferably also stored in the database. In particular, the database contains information about what the optimal ratio of treatment time and illuminance looks like and the control unit comprises calculation means which makes the corresponding conversions from set target illuminance to optimal treatment time or vice versa from set treatment time to optimal target illuminance.

When the light therapy illumination system is activated, at least one adjustment takes place between the set desired illuminance and the illuminance detected by the first sensor unit in the useful area. The brightness of the light sources is then adjusted so that they match as possible. It was recognized that the actual illuminance in the working area is constantly changing due to external influences. Especially in a moving vehicle, the environment changes constantly and thus the external lighting conditions. A user is thus constantly exposed to changing brightness. Therefore, a dynamic control of the light sources is advantageous to To be able to ensure a constant illuminance in a given useful range. The control unit therefore compensates the measured illuminance according to the invention with a predetermined target illuminance and regulates the brightness of the illumination device or its light source (s) such that the illuminance detected by the sensor unit in the useful region corresponds as far as possible to the desired illuminance. This means that it is regularly checked whether the illuminance detected by the sensor unit corresponds to the desired illuminance. If this is not the case, the brightness of the light sources is adjusted. If the detected illuminance is below the value of the target illuminance, the brightness of the light source (s) is increased. Accordingly, the brightness is reduced when the detected illuminance is above the target illuminance. This adjustment takes place, for example, permanently and in real time, preferably continuously at certain time intervals, for example at intervals of a few seconds. In particular, the time intervals in which this adjustment is to take place can be set via the control unit.

For example, depending on the speed of the vehicle, the time intervals in which the adjustment takes place between the detected illuminance and the target illuminance are changed. So the environment changes at a speed of 200 km / h more often than at a speed of 50 km / h, which is why a comparison in shorter time periods can be useful.

The adjustment between the detected illuminance and the target illuminance is also preferably within a tolerance range in order to prevent a change in the brightness of the light sources, even with minor deviations - for example, of a few 10 lux. This could otherwise be perceived by a user as a disturbing flicker.

Alternatively or additionally, it is possible for a user to individually set a desired illuminance. This means he can choose a brightness that he finds pleasing. This happens for example via a voice control or via manual input units, which are coupled to the control unit. For example, regulators analogous to volume controls in the area of the dashboard are provided, via which a user can initially set the brightness of the lighting device manually and preferably continuously. If he has found an optimal setting for him, the corresponding illuminance is detected by the sensor unit in the useful area and stored as a target illuminance.

In one embodiment of the invention, the control unit is set up to take into account further input variables when controlling the brightness of at least one light source of the lighting device. These input variables may in particular be information about light conditions outside the vehicle and / or the driving state of the vehicle. These input variables can in particular be used to determine the desired illuminance.

According to a preferred embodiment, the control unit is set up to also record the treatment time. Preferably, the control unit is designed to determine the optimal illumination duration, also called treatment time, for performing a light therapy, depending on the selected target illuminance. Even if, for example, the brightness is only increased for a short time, this is registered and the remaining treatment time is adjusted accordingly. If the end of the treatment time is reached, the lighting device is automatically switched off, for example, or the user is informed that the corresponding treatment time has been reached. Likewise, for example, a user can specify a desired illumination duration / treatment time via the control unit and calculates a target illumination intensity suitable for this treatment time.

In one embodiment of the invention, the control unit is coupled to the navigation system of the vehicle and the target illuminance is selected depending on the expected travel time. As a rule of thumb, the longer the journey time, the lower the target illuminance.

According to a further embodiment of the invention, the light therapy illumination system for the vehicle interior is connected to further external light therapy illumination systems via a network. This may be, for example, a smart home system. The treatment time of a user is then detected by the respective active light therapy lighting system and transmitted to the other systems. If a user switches between the light therapy lighting systems, this information can be used to calculate the residual treatment time that is still needed and / or to specify the required target illuminance.

According to an advantageous further embodiment of the invention, the lighting device is designed in several parts in order to generate the respectively desired desired illuminance in different useful areas. In particular, a plurality of sensors are provided for this purpose within a sensor unit, which provide the light intensity in the different Record useful areas. For example, corresponding light sources and sensors are available for each seat within a vehicle.

It is also particularly preferable for the useful range detected by the sensor unit to be adjustable in order to be able to adapt it to different body sizes of users. For example, a sensor unit is coupled to a vehicle seat in such a way that the setting of the useful range is automatic depending on the seating position. If a further sensor unit is provided for detecting the viewing direction, this function can also be taken over by the further sensor unit, as already described.

As already explained, the lighting device is preferably designed to generate white or differently colored light in order to simulate daylight as effectively as possible. According to a preferred embodiment, the lighting device comprises a plurality of LEDs that are independently controllable by the control unit. Preferably, at least one of the light sources is a blue LED. It has been found that a proportion of blue light in the range of about 480 nm is suitable to compensate for lack of sunlight. By using an advantageous proportion of blue, even at comparatively low brightnesses of about 750 lux results can be achieved which otherwise can only be achieved by significantly higher brightnesses and / or longer irradiation times. Particularly preferably, the lighting device comprises at least one red, one green and one blue LED, so that white light is generated by additive color mixing and additionally the color temperature of the light is controllable. If only a mixture of a few discrete wavelengths is used, the windows of the vehicle - especially the windshield - may be appropriately coated so as to be pervious or absorbent to the particular wavelengths. This avoids reflections on the windshield.

It should also be noted that the light therapy lighting system can and should preferably be used in daylight, that is to say in the light, since it is only possible to partially look into the darkness from a vehicle illuminated from inside. Alternatively and in combination, therefore, various measures may be provided to ensure the safety of the driver and other road users. For example, the sensor unit first measures the light intensity when the lighting device is switched off, or, alternatively, the brightness of the surroundings is detected by a sensor which is directed outwards. If the light intensity detected in this way falls below a certain threshold value, that is to say if the surroundings are dark, switching on of the lighting device is not permitted in order to prevent the windows from becoming blind due to the illumination of the vehicle interior.

According to one embodiment, the light therapy illumination system, in particular the control unit, is coupled to the exterior lighting of the vehicle. Thus, in particular registered by the control unit, whether the exterior lighting of the vehicle is turned on. If this is the case, the lighting device is automatically switched off. Even if the driver only temporarily activates the exterior lighting, for example because he is driving through a tunnel, this is registered by the control unit and the lighting device is automatically deactivated. It should be noted that this embodiment is not suitable for countries in which a switched on outdoor lighting is also required by day.

According to a further embodiment, the control unit is also coupled to other components of the vehicle, in particular to the driving electronics. Preferably, the control unit registers whether the vehicle is in motion or whether it is stationary. In the case of standstill, the control unit allows the lighting device to be turned on. For example, the brightness can be automatically increased when the vehicle is at a red light.

Furthermore, additional sensors can be provided, via which other road users, as a rule other cars, are registered. In order to avoid dazzling these other road users, the brightness of the light sources can automatically be down regulated when another vehicle is detected.

Further features and advantages of the invention will become apparent from the following description of a non-limiting embodiment, which will be explained in more detail below with reference to the figures. In this drawing show schematically:

1 a side view of a vehicle with an embodiment of a light therapy illumination system according to the invention; and

2 an embodiment of a control circuit for the light therapy lighting system according to the invention.

1 schematically shows a side view of a vehicle 11 with an embodiment of a light therapy illumination system according to the invention 10 for a vehicle interior 40 , Here are the components of this lighting system 10 shown only schematically and their education and arrangement is not limited to this illustration. In this embodiment of the invention, for example, in the vehicle interior 40 of the vehicle 11 a lighting device 20 arranged. The lighting device 20 is on the vehicle roof 42 attached and includes one or more light sources 22 putting light into a utility area 32 radiate and illuminate this. In the 1 is this useful area 32 indicated as dashed oval. The useful area 32 is at head height of a user 44 standing in a front seat of the vehicle 11 sitting. This is preferably the driver's seat, but also persons in the passenger seat can define a useful area at head height. With the light therapy illumination system according to the invention 10 Thus, a light therapy for the driver and / or the passenger can be performed. The invention is also suitable for people in the rear seats of a vehicle with an appropriate design 11 applicable.

Furthermore, the light therapy illumination system includes 10 a first sensor unit 30 in the illustrated embodiment in the upper region of the windshield 46 is arranged. The sensor unit 30 is adapted to the illuminance in the working area 32 inside the vehicle interior 40 capture. It is thus a sensor, preferably inside the vehicle 11 which is aligned to the driver's seat. The sensor 30 is conveniently located near the head of a person sitting on a vehicle seat, so as to increase the illuminance in the area 32 to measure in which the head and thus the eyes of a person are. Additionally or alternatively, a sensor unit suitable for this purpose 30 for example, in a headrest 12 be integrated.

The system 10 includes a further sensor unit 31 include, with which the viewing direction of a person can be detected. This sensor unit can be located, for example, in the area of the dashboard, as in 1 is indicated schematically. Also an attachment below the vehicle ceiling 42 or other suitable positions would be possible. For example, the sensor unit comprises 31 to a camera system, which is adapted to the line of sight of a user 44 capture. Furthermore, the system includes 10 in the embodiment of the 1 a third sensor unit 33 below the vehicle roof 42 which is directed outwards. This sensor 33 captures the ambient light in the exterior of the vehicle 11 ,

In addition, the light therapy illumination system according to the invention comprises 10 a control unit 60 for communication with at least the sensor unit 30 and the lighting device 20 is formed and thus connected to these. The control unit 60 is preferably also with the sensor unit 33 for detecting the ambient light and the sensor unit 31 connected to detect the line of sight of a driver, if such additional sensor units are provided. Other sensors and / or data sources can also be sent to the control unit 60 be connected. For example, the control unit 60 Information from other systems of the vehicle 11 and / or vehicle systems of other vehicles receive and evaluate. The control unit 60 is in 1 only schematically above the vehicle 11 however, is typically integrated into the electronics of the vehicle.

In one embodiment of the invention is the light therapy illumination system 10 via a network in conjunction with other light therapy lighting systems 10 ' , ..., 10 '' as it is in 1 is shown by dashed lines. This connection is preferably wireless and can be realized for example as a radio link. This makes it possible to coordinate several light therapy lighting systems with each other, so that one in the vehicle 11 light dose to be applied may be adjusted when the information to the light therapy illumination system from another light therapy illumination system 10 of the vehicle 11 that a person has already been exposed to a certain light dose elsewhere on the same day.

The control unit 60 of the light therapy lighting system 10 preferably has access to a database of target illuminances that it can access to the illuminance in the useful area 32 to regulate. This regulation of the illuminance in the working area 32 takes place via a control of the lighting device 20 through the control unit 60 , It is controlled by a control unit 60 the control unit 60 the at least one light source 22 the lighting device 20 while adjusting its brightness. This can be done for example via a variable resistor. Uses the lighting device 20 Other light sources, for example in the form of illuminable control elements of the vehicle, these can also be controlled accordingly by the control unit to the total with the various light sources in the useful area 32 to set a specific illuminance.

The control unit 60 is adapted to the lighting device 20 at least as a function of the sensor unit 30 recorded illuminance in the working area 32 head for. In addition, the control as input variables further information from the sensor units 31 and 33 consider. For example, the Regulation include that the lighting device 20 completely switched off in the space areas considered by the driver or the light intensity is at least reduced. For this purpose, information flows from the sensor unit 31 to capture the viewing direction in the scheme. Information from the sensor 33 for the ambient light can also be used to the lighting device 20 switch off or at least reduce the light intensity when it is dark outside the vehicle or with the sensor unit 33 measured brightness is below a threshold.

2 schematically shows an embodiment of a control loop for a light therapy lighting system according to the invention. Input variables here are, on the one hand, information about the light in the surroundings of the vehicle (ambient light), which corresponds to the ambient light sensor 33 is detectable. This may be, for example, a phototransistor. Another input quantity is the intended light dose B which a user is to record, in lux hours. This is for example 5000 lux hours. Optionally, other context information may be used, which may be, for example, information that the vehicle has been held at a traffic sign or a traffic light, or that other vehicles are in the area of the vehicle and, for example, come to meet him. This information may be captured by and received from sensors of the vehicle, other vehicles (C2C), or other external devices (C2X).

The output value of the control loop is the illuminance in a working area 32 inside the vehicle interior 40 at a certain time. Based on this output value, the detected ambient light and possibly further context information, the maximum tolerable illuminance in this useful range is determined by means of a non-linear transfer function. The actual illuminance in the useful area is determined by the sensor unit 30 certainly. By means of a control loop which compares the actual illuminance with the maximum tolerable illuminance determined by the transfer function, the lighting device becomes 20 for example in the form of an LED array of a control unit 61 controlled accordingly to increase or reduce the brightness of the LED array accordingly. In this case, the control loop is preferably selected so that rapid changes in illuminance are avoided, since this can otherwise lead to unpleasant irritations. For this example, a PI controller can be used.

Furthermore, the light dose A is tracked by integration and as long as this light dose A is below the intended light dose B, light is further introduced into the vehicle interior and the light therapy continues. When the light dose A reaches the predetermined light dose B, the lighting device becomes 20 switched off and the light therapy ended.

LIST OF REFERENCE NUMBERS

10, 10 ', 10' '

 Light therapy light system

11

 vehicle

12

 headrest

20

 Lighting device, LED array

22

 light source

30

 Sensor unit, light sensor for the working area

31

 Sensor unit for detecting the viewing direction, camera system

32

 useful region

33

 Sensor unit, ambient light sensor

40

 Vehicle interior

42

 vehicle ceiling

44

 Users, drivers

46

 Windshield

50

 Viewing direction of a user

60

 control unit

61

 control unit

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been 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.

Cited patent literature

• DE 102009051260 A1 [0005]
• DE 102012015039 A1 [0006]
• DE 102006052777 A1 [0006]
• DE 4330721 C1 [0006]

Claims (18)

Light therapy lighting system ( 10 ) for a vehicle interior ( 40 ) of a vehicle ( 11 ), comprising - a lighting device ( 20 ) with at least one light source ( 22 ) inside a vehicle interior ( 40 ) is arranged and adapted to a Nutzbereich ( 32 ) inside the vehicle interior ( 40 ), - at least one sensor unit ( 30 ), which is adapted to the illuminance in this useful range ( 32 ), - another sensor unit ( 31 ), which is adapted to a viewing direction of the user ( 44 ), and - a control unit ( 60 ), which is adapted to that of the sensor unit ( 30 ) received illuminance of the latter and the brightness of at least one light source ( 22 ) of the lighting device ( 20 ) in such a way that that of the sensor unit ( 30 ) recorded illuminance in the useful range ( 32 ) corresponds to a target illuminance, and that of the further sensor unit ( 31 ) the most viewed direction of the user ( 44 ) and light sources of the lighting device ( 20 ) in the user's ( 44 ) to turn off or to reduce their intensity. Light therapy lighting system ( 10 ) for a vehicle interior ( 40 ) of a vehicle ( 11 ), comprising - a lighting device ( 20 ) with at least one light source ( 22 ) inside a vehicle interior ( 40 ) is arranged and adapted to a Nutzbereich ( 32 ) inside the vehicle interior ( 40 ), - at least one sensor unit ( 30 ), which is adapted to the illuminance in this useful range ( 32 ), - means for determining a treatment time, - means for switching off the lighting device ( 20 ) after a predetermined target treatment time, and - a control unit ( 60 ), which is adapted to that of the sensor unit ( 30 ) received illuminance of the latter and the brightness of at least one light source ( 22 ) of the lighting device ( 20 ) in such a way that that of the sensor unit ( 30 ) recorded illuminance in the useful range ( 32 ) corresponds to a target illuminance, and which is set up, a light dose as a product of the illuminance in the useful range ( 32 ) and the treatment time. Light therapy lighting system ( 10 ) according to the preceding claim, characterized in that the control unit ( 60 ) comprises an internal database and / or arithmetic unit, which determines a suitable target treatment time depending on a target illuminance or vice versa. Light therapy lighting system ( 10 ) according to one of claims 2 or 3, characterized in that the control unit ( 60 ) is adapted to the lighting device ( 20 ) shut off when the determined light dose has reached a predetermined dose of light. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the control unit ( 60 ) is arranged, in the regulation of the brightness of at least one light source of the lighting device ( 20 ) to take into account further input variables. Light therapy lighting system ( 10 ) according to the preceding claim, characterized in that information about light conditions outside the vehicle ( 11 ) and / or the driving condition of the vehicle ( 11 ) belong. Light therapy lighting system ( 10 ) according to the preceding claim, characterized in that it is designed to provide information about other vehicles in the vicinity of the vehicle ( 11 ), and the control unit ( 60 ) is adapted to the lighting device ( 20 ) decrease in intensity when another vehicle has been detected. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the usable range ( 32 ) is defined in the upper region of a vehicle seat. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the lighting device ( 20 ) comprises at least one LED and / or an OLED. Light therapy lighting system ( 10 ) according to the preceding claim, characterized in that at least one LED emits light in the wavelength range of 420 to 480 nm. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that at least one light source ( 22 ) of the lighting device ( 20 ) on the vehicle ceiling ( 42 ) of the vehicle interior ( 40 ) is arranged. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that at least one light source of Lighting device ( 20 ) in a sun visor of the vehicle ( 11 ) is integrated. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that at least one illuminable operating element in the vehicle interior ( 40 ) as the light source of the lighting device ( 20 ) serves. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that at least one light source ( 22 ) of the lighting device ( 20 ) is adapted to emit diffused light. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the sensor unit ( 30 ) in the area of the vehicle ceiling ( 42 ) is located. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the sensor unit ( 30 ) in the region of a headrest ( 12 ) of a vehicle seat ( 11 ) is located. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the lighting device ( 20 ) is subdivided into several segments, which are controlled by a control unit ( 61 ) of the control unit ( 60 ) are independently controllable in intensity. Light therapy lighting system ( 10 ) according to one of the preceding claims, characterized in that the light therapy illumination system ( 10 ) via a network with at least one further light therapy illumination system ( 10 '; 10 '' ) connected is.

Images