JP5692524B2 - Vehicle lighting control device - Google Patents

Description

  The present invention relates to a vehicle lighting control device, and more specifically, for a vehicle that comprehensively controls a plurality of lighting means in a vehicle interior according to an illuminance distribution in the vehicle interior that dynamically changes by a light source outside the vehicle. The present invention relates to a lighting control device.

  In the conventional vehicle, the illumination of the devices arranged on the front panel in the vehicle interior is also lit in conjunction with the lighting of the headlamp and auxiliary lamp. Patent Document 1 below describes an illumination control system that brightens the illumination of a device facing the occupant's line of sight, and further darkens the illumination of the device when it is dark outside the vehicle. Further, in Patent Document 2 below, a time-series change in illuminance outside the vehicle is detected, and when the illuminance outside the vehicle rapidly decreases in consideration of the dark adaptation of the occupant, the illuminance inside the vehicle is lit high. There is described a vehicle interior lighting device that performs illuminance control in which the vehicle interior illuminance is reduced to a low level when the vehicle is gradually reduced.

Japanese Patent Laid-Open No. 2006-21591 JP-A-11-255017

  By the way, various outside lights such as sunlight and street lamps enter the vehicle interior of the actual vehicle from the window or sunroof of the vehicle. In addition, the intensity and direction of external light incident on the vehicle compartment of a running vehicle is constantly changing due to various external factors such as changes in the environment around the road on which the vehicle runs, such as entering and exiting a tunnel, and changes in weather. Change dynamically. For this reason, the illuminance distribution according to the simulation at the vehicle design stage is not always reproduced in the cabin of the traveling vehicle.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a vehicular illumination control device capable of reproducing a desired illuminance distribution in a vehicle interior.

  In order to achieve the above object, a vehicle lighting control device according to the present invention includes a database that stores data of a three-dimensional shape and reflection characteristics of members constituting a vehicle interior, and data of a reference illuminance distribution in the vehicle interior; A light source distribution measuring means for measuring illuminance, the illuminance measured by the light source distribution measuring means, and the three-dimensional shape and reflection characteristics of the members constituting the vehicle interior read from the database. Based on the data, a composite image generating means for generating a vehicle interior composite image, a plurality of illumination means arranged in the vehicle interior, an illumination distribution in the vehicle interior is obtained from the vehicle interior composite image, and the illumination distribution is obtained from the database. Illumination control means for controlling the plurality of illumination means so as to approach the reference illuminance distribution read out from.

  According to the present invention configured as described above, a composite image of the passenger compartment is generated using the measurement result of the light source distribution measuring means, and the illuminance distribution in the passenger compartment is obtained. A plurality of illumination means are controlled according to the illuminance distribution in the passenger compartment. This makes it possible to reproduce a desired illuminance distribution even in the interior of a traveling vehicle in which the intensity and direction of incident external light changes dynamically every moment.

  In the present invention, it is preferable that the database stores reference color temperature data in a passenger compartment, the light source distribution measuring unit measures chromaticity, and at least one of the plurality of lighting units stores chromaticity. The chromaticity variable illuminating means that can be adjusted, wherein the composite image generating means includes illuminance and chromaticity measured by the light source distribution measuring means, and three members constituting the vehicle interior read from the database. The vehicle interior composite image is generated based on the data of the dimensional shape and the reflection characteristics, and the lighting control unit obtains the color temperature of the vehicle interior from the vehicle interior composite image, and the color temperature is read from the database. The chromaticity of the chromaticity variable illumination means is adjusted so as to approach the reference color temperature.

  Outside light of various chromaticities enters the passenger compartment. For this reason, the color temperature in the passenger compartment may change greatly due to external light incident on the passenger compartment. For example, when sunset light or arc lamp light is incident, the interior of the vehicle has a reddish color and the color temperature in the interior of the vehicle tends to be low. For example, in the case of cloudy weather, the interior of the vehicle has a bluish color and the color temperature in the interior of the vehicle tends to increase.

  In addition, the color temperature in the passenger compartment affects the sensation of the passenger. For example, when the color temperature is high, the passenger's arousal level or cold feeling tends to increase. For example, when the color temperature is low, the degree of concentration and warmth of the occupant tend to increase.

  Therefore, in the present invention, the chromaticity of the variable chromaticity illumination means is adjusted according to the color temperature in the passenger compartment. This makes it possible to reproduce a desired color temperature in the vehicle interior of a running vehicle in which the intensity and direction of incident external light changes dynamically every moment. As a result, a desired sensation can be induced in the occupant by the color temperature.

  In the present invention, it is preferable that the reference color temperature is set for each of a plurality of zones obtained by dividing a vehicle interior, and the lighting control unit is configured so that the temperature distribution approaches the reference color temperature for each zone. Control the chromaticity variable illumination means.

  By setting the reference color temperature for each zone in this way, it is possible to reproduce a desired color temperature for each zone. For example, in the driver's seat zone, the color temperature peak is increased so as to increase the arousal level, while in the rear seat, the color temperature in the vehicle interior is decreased so as to decrease the color temperature peak so as to give a sense of warmth. It can be adjusted for each zone.

In the present invention, it is preferable that the variable chromaticity illumination means is a light emitting diode.
Thereby, by adjusting the chromaticity of the light emitting diode, the chromaticity in the passenger compartment can be easily changed while suppressing power consumption.

In the present invention, it is preferable that the light source distribution measuring means is an omnidirectional camera.
Thus, by providing one light source distribution measuring means, it is possible to measure the light source distribution of the entire vehicle interior.

  According to the vehicle lighting control device of the present invention, it is possible to reproduce a desired illuminance distribution in the passenger compartment.

It is a block diagram explaining the structure of the vehicle lighting control apparatus by embodiment of this invention. It is a schematic diagram explaining arrangement | positioning of the illumination intensity sensor in a vehicle interior. It is a perspective view explaining the zone in a vehicle interior. It is a flowchart explaining operation | movement of the vehicle lighting control apparatus by embodiment of this invention. (A) is a graph which shows the relationship between color temperature and a feeling of cold, (b) is a graph which shows the relationship between color temperature and a feeling of warmth. (A) is a graph which shows the relationship between color temperature and arousal feeling, (b) is a graph which shows the relationship between color temperature and concentration degree.

Hereinafter, an embodiment of a vehicle lighting control device of the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a block diagram of a vehicle lighting control apparatus according to an embodiment of the present invention. As shown in FIG. 1, the vehicle lighting control device includes three-dimensional shape data such as arrangement and shape of members constituting the vehicle interior, reflection characteristic data of each part of the member surface, and reference illuminance distribution in the vehicle interior. The database 1 storing data, the light source distribution measuring means 2 arranged in the passenger compartment and measuring the illuminance and chromaticity, the illuminance and chromaticity measured by the light source distribution measuring means 2, and read from the database 1 Based on the data of the three-dimensional shape and reflection characteristics of the members constituting the vehicle interior, composite image generation means 3 for generating a vehicle interior composite image, a plurality of illumination means 4 arranged in the vehicle interior, and vehicle interior composition An illumination control means 5 for controlling a plurality of illumination means 4 is provided so as to obtain an illuminance distribution in the vehicle interior from the image and bring the illuminance distribution closer to the reference illuminance distribution read from the database.

The database 1 stores CAD data including data on the three-dimensional shape and reflection characteristics of members constituting the vehicle interior, and data on the reference illuminance distribution in the vehicle interior.
In addition to the reference illuminance distribution data in the passenger compartment, the database 1 also stores reference color temperature data set for each of a plurality of zones into which the passenger compartment is divided.

  FIG. 2 shows an arrangement example of the illuminance sensors 21 to 24 which are the light source distribution measuring means 2. In the example shown in FIG. 2, the first illuminance sensor 21 is arranged on the front dashboard in the passenger compartment, the second illuminance sensor 22 is arranged inside the door window on the right side of the driver's seat, and the third The illuminance sensor 23 is arranged inside the door window on the left side of the passenger seat, and the fourth illuminance sensor 24 is arranged behind the rear seat and below the rear window. And in these 1st-4th illumination intensity sensors 21-24, illumination intensity and chromaticity are measured.

  Although FIG. 2 shows an example in which four illuminance sensors 21 to 24 are provided, the number of illuminance sensors arranged is not limited to this. For example, the light source distribution measuring means 2 may be composed of one omnidirectional camera. The omnidirectional camera may be arranged near the center of the ceiling in the passenger compartment. Further, the light source distribution measuring means 2 may be composed of one hemispherical mirror disposed on the dashboard and a camera that images the spherical mirror.

The light source distribution measuring means 2 uses brightness linearity as light source estimation. The linearity of brightness refers to an assumption that the brightness of an object observed in an environment where a plurality of light sources exist is equal to the sum of the brightness of objects under each light source. For example, the light source I in the scene is represented by a linear sum of n base light sources I _(i) having unit luminance, as shown in the following formula (1).
I = Σ ⁿ _i-1 α _i I _(i) (1)

If the brightness R _j (I _(i) ) of a certain point xj in the scene observed under each base light source I _(i) is given, the observation is performed under the light source I in the scene. The brightness xj to be given is given by the following equation (2).
xj = Σ _i α _i R _j (I _(i) ) (2)

Accordingly, the brightness x _j at a sufficiently large number of points is given by the following expression (3), and by solving this with respect to the unknown α _i , the light source distribution I is obtained based on the brightness x _j observed as an image. It is done.

  The composite image generation means 3 is the three-dimensional CAD data read from the database 1, that is, the reflection characteristic data such as the arrangement, shape, and reflectance spectral distribution of the members constituting the vehicle interior, and the light source distribution measurement. A vehicle interior composite image is generated by combining the illuminance and chromaticity measured by the means 2. The composite image generation means 3 incorporates the data measured by the light source distribution measurement means into the vehicle interior image data of the interior of the vehicle interior based on the three-dimensional CAD data, and generates a vehicle interior composite image by a rendering algorithm. For example, the illuminance for each predetermined minute portion on the surface of the component when the component in the passenger compartment in the CAD data is irradiated with light of the chromaticity measured from the measured light source direction at the measured illuminance And the color tone are calculated by a computer according to the reflection characteristics of each minute portion.

  Further, from the measured color tone, for example, the color temperature is obtained based on the chromaticity coordinates of the CIE chromaticity diagram.

  Thus, the composite image of the passenger compartment generated using the measurement result of the light source distribution measuring unit is closer to the scene in the passenger compartment visually recognized by the occupant than the image of the passenger compartment captured by the camera. It will be a thing. For this reason, the illuminance distribution and the color temperature in the passenger compartment are more accurately obtained. A plurality of illumination means are controlled according to the illuminance distribution in the passenger compartment. This makes it possible to reproduce a desired illuminance distribution even in the interior of a traveling vehicle in which the intensity and direction of incident external light changes dynamically every moment.

  As an example of the illumination means 4, as shown in the block diagram of FIG. 1, illumination of front seat peripheral devices such as instrument panel meters 411, sub-indicator monitor 412, navigation system & display 413, operation system switch 414 Room lamps such as a room lamp 421, a courtesy lamp 422, an outer handle lamp 423, a foot lamp 424, an intermediate pillar lamp 425, a seat downlight lamp 426, a console downlight lamp 427 and an inner handle lamp 428, Illumination of peripheral devices of the second seat and the third seat such as the rear seat TV monitor 431 and the operation system switch 432 may be mentioned.

  Each of these illumination means 4 is preferably composed of light-emitting diodes with variable chromaticity. As a result, the color tone of the illumination of each illumination means 4 can be adjusted.

  And the illumination control means 5 calculates | requires the illumination distribution in a vehicle interior from a vehicle interior synthetic | combination image. The illuminance distribution in the passenger compartment may be obtained for each zone obtained by dividing the passenger compartment into a plurality of regions. FIG. 3 shows an example of a zone in the vehicle interior. In the example shown in FIG. 3, the vehicle interior is divided into six zones Z1 to Z6. The first zone Z1 is provided near the driver seat, the second zone Z2 is provided near the passenger seat, the third zone Z3 is provided near the right seat in the second row, and the fourth zone Z4 is provided near the left seat in the second row, the fifth zone Z5 is provided near the right seat in the third row, and the sixth zone Z6 is provided near the left seat in the third row. It has been.

  The arrangement of the zones is not limited to this, and various arrangements can be set. For example, in the example shown in FIG. 3, the second row is divided into a third zone on the right seat side and a fourth zone on the left seat side. May be set as Similarly, the vicinity of the left and right seats in the third row may be set as one zone.

  The illumination control unit 5 controls the plurality of illumination units 4 so that the illuminance distribution approaches the reference illuminance distribution read from the database.

  Note that the reference illuminance distribution and the reference color temperature stored in the database need not be limited to one, and may be stored in correspondence with various environmental conditions. And it is good for an illumination control means to read the reference | standard illumination intensity distribution and color temperature corresponding to environmental conditions.

  Examples of various environmental conditions include the presence / absence of seating of a passenger in each passenger seat in the passenger compartment. The presence / absence of seating is detected by, for example, a front seat sensor 601, a second seat sensor 602, and a third seat sensor 603. Examples of various environmental conditions include opening / closing of a vehicle door and operating conditions. The opening / closing and operation status of the door are detected by, for example, a door position sensor 604, a door switch 605, an outer handle operation sensor 606, an inner handle operation sensor 607, a door opening / closing operation sensor 609, and a door lock sensor 613. Examples of various environmental conditions include vehicle stoppages and travel conditions. The stop of the vehicle and the traveling state are detected by, for example, a parking brake sensor 610, a gear range sensor 611, and a speed sensor 612.

  In order to control the illumination unit 4, the illumination control unit 5 includes a front seat peripheral device illumination control unit 51, a room lamp system illumination control unit 52, and a second / third sheet peripheral device illumination control unit 53.

  The front seat peripheral device illumination control unit 51 controls the lighting of the front seat peripheral devices such as instrument panel meters 411, sub-indicator monitor 412, navigation system & display 413, and operation system switch 414. The room lamp system lighting control unit 52 includes a room lamp 421, a courtesy lamp 422, an outer handle lamp 423, a foot lamp 424, an intermediate pillar lamp 425, a seat downlight lamp 426, a console downlight lamp 427, and an inner handle lamp 428. Control the lighting of the room lamp system. The second and third seat peripheral device illumination control unit 53 controls the illumination of the second seat and third seat peripheral devices such as the rear seat TV monitor 431 and the operation system switch 432.

  Further, the illumination control means 5 controls the color tone of the LED illumination means so that the temperature distribution approaches the reference color temperature for each zone.

Next, with reference to the flowchart of FIG. 4, the operation example of the vehicle lighting control apparatus according to the embodiment of the present invention will be described.
Note that the operation shown in the flowchart of FIG. 4 may be repeatedly executed at a predetermined cycle (for example, every 100 milliseconds). As a result, the illuminance and the like of the interior of the traveling vehicle in which the intensity and direction of the incident external light changes dynamically every moment are sequentially measured, and the plurality of illumination means are sequentially controlled according to the illuminance distribution. .

  First, illuminance and color tone are detected by the four illuminance sensors 21 to 24 of the light source distribution measuring means 2 (step S1). Table 1 below shows the measurement results of the illuminance of each of the illuminance sensors 21-24.

As shown in Table 1 above, the measured illuminance of the first illuminance sensor 21 is 80 lux, the measured illuminance of the second illuminance sensor 22 is 90 lux, and the measured illuminance of the third illuminance sensor 23 is 70 lux. The measured illuminance of the fourth illuminance sensor 24 is 20 lux.
In addition, the illuminance sensors 21 to 24 measure color tone in addition to illuminance. For example, the color tone may be measured as a balance of the three primary colors.

  Next, the composite image generating means 3 generates a vehicle interior composite image (step S2). And the illumination control means 5 calculates | requires the illumination intensity distribution and color temperature distribution in a vehicle interior from a vehicle interior synthetic | combination image (step S3). Table 2 below shows the illuminance distribution detected for each zone.

As shown in Table 2 above, the detected illuminance of the driver's zone Z1 is “level 9”, the detected illuminance of the passenger's zone Z2 is “level 7”, and the second row of the right-seat zone Z3 The detected illuminance is “level 3”, the detected illuminance of the zone Z4 in the second row of the left seat is “level 3”, and the detected illuminance of the zone Z5 in the third row of the right seat is “level 2”. The detected illuminance of the zone Z6 for the left seat is “level 2”.
Here, the higher the illuminance, the larger the numerical value of the illuminance level. In addition, the numerical value classification of the level may be set arbitrarily.

Table 3 below shows the color temperature distribution for each zone.

  As shown in Table 2 above, the detected illuminance of the zone Z1 of the driver's seat is “level II”, the detected color temperature of the zone Z2 of the passenger seat is “level II”, and the zone Z3 of the right seat in the second row The detected color temperature is “level II”, the detected color temperature of the zone Z4 in the second row left seat is “level II”, and the detected color temperature of the zone Z5 in the third row right seat is “level I”. Yes, the detected color temperature of the zone Z6 in the third row on the left seat is “level I”.

  As shown in Table 4 below, “Level I” of the color temperature corresponds to “3000 to 4000 K”, “Level II” of the color temperature corresponds to “4000 to 5000 K”, The color temperature “level III” corresponds to the color temperature “5000 to 6000 K”, and the color temperature “level IV” corresponds to the color temperature “6000 to 7000 K”.

  Next, the illumination control unit 5 controls the plurality of illumination units 4 so that the detected illuminance distribution and color temperature distribution are brought close to the reference illuminance distribution and reference color temperature distribution read from the database 1 ( Step S4).

  The reference illuminance distribution read from the database 1 is shown at the bottom of Table 2 above. In this reference illuminance distribution, the detected illuminance in the driver's zone Z1 is "level 9", the detected illuminance in the passenger's zone Z2 is "level 7", and the detected illuminance in the zone Z3 in the second row right seat is “Level 4”, the detected illuminance of the zone Z4 in the second row left seat is “level 4”, the detected illuminance of the zone Z5 in the third row right seat is “level 2”, and the third row left seat The detected illuminance of the zone Z6 is “level 2”.

  When the detected illuminance distribution in Table 2 is compared with the reference illuminance distribution, the detected illuminance “level 3” in the zone Z3 in the second row and the right seat and the zone Z4 in the second row in the left seat are the reference illuminance “level 4” in the same zone. Is lower than. Therefore, the illuminance control means 5 controls the illumination means 4 so as to increase the illuminance of these zones Z3 and Z4 from “level 3” to “level 4”.

  First, since it is not necessary to change the illuminance of the driver seat (zone Z1) and the passenger seat (zone Z2), as shown in Table 5 below, corresponding illumination means before and after the control by the front seat peripheral illumination control unit 51 The illuminance does not change.

  Further, as shown in Tables 6 and 7 below, the room lamp system illumination control unit 52 turns the room lamp 421 “OFF” so as to increase the illuminance of the zones Z3 and Z4 from “level 3” to “level 4”. To “level 1”, the intermediate pillar lamp 425 is also changed from “OFF” to “level 1”, and the seat downlight lamp 426 is changed from “level 2” to “level 3”.

  Further, as shown in Table 8 below, the second and third sheet peripheral device illumination control unit 53 changes the illuminance of the operation system switch 432 from “level 3” to “level 4”, and changes the illuminance of the zones Z3 and Z4. Improve.

  As described above, the front seat peripheral illumination control unit 51, the room lamp system illumination control unit 52, and the second and third seat peripheral device illumination control unit 53 of the illumination control unit 4 control the illuminance of the various illumination means 4, thereby The illuminance distribution of the zone is adjusted to be close to the reference illuminance distribution. Thus, by comprehensively controlling various illumination means in the vehicle interior, it is possible to reproduce a desired illuminance distribution in the vehicle interior.

  When the third seat seating sensor 603 detects that no occupant is seated on the third row of seats, a reference illuminance distribution corresponding to such a case may be read. The reference illuminance distribution in this case is set to “level 1” where the illuminance of the third row right seat (zone Z5) and the third row left seat (zone Z6) shown in Table 2 is the lowest level. Then, the second and third sheet peripheral device illumination control unit 53 of the illuminance control means 5 may, for example, set the operation system switch 432 in the third row to “OFF”.

  In this way, the presence or absence of an occupant seated on each seat in the passenger compartment is detected, and the lighting means is controlled according to the presence or absence of an occupant seated on the seat in the zone, thereby suppressing power consumption of the illuminating means. Can do.

Furthermore, the illumination controller 5 also adjusts the color temperature for each zone.
The reference color temperature distribution read from the database 1 is shown at the bottom of Table 3 above. The reference color temperature of the driver's zone Z1 is "Level IV", the reference color temperature of the passenger's zone Z2 is "Level III", the second row right seat zone Z3, the second row left seat zone The reference color temperatures of Z4, the third-seat right-seat zone Z5, and the third-seat left-seat zone Z6 are “level I”. On the other hand, as shown in Table 3 above, the detected color temperatures of zone Z1 for the driver's seat, zone Z2 for the passenger seat, zone Z3 for the second row right seat and zone Z4 for the second row left seat are “level II”. The detected color temperatures of the zone Z5 in the third row and the right seat and the zone Z6 in the third row and the left seat are “level I”.

  Therefore, the lighting control unit 5 raises the color temperature of the zone Z1 of the driver's seat from “level II” to “level IV” in order to bring the color temperature distribution of each zone close to the reference color temperature distribution, and the zone Z2 of the passenger seat. The color tone of the illumination means is adjusted so that the color temperature of the lighting device is raised from “level II” to “level III”. For this purpose, for example, the front seat ambient illumination control unit 51 may adjust the color tone of the meters 411, the sub-indicator monitor 412, and the operation system switch 414 so that the color temperature becomes high.

  Here, reference is made to the graph of FIG. A curve I in the graph indicates a tendency of sensory evaluation of arousal level with respect to color temperature (K). As shown by curve I, the arousal level tends to increase when the color temperature is high. Accordingly, the driver's arousal level can be improved by adjusting the color temperature of the zone Z1 of the driver's seat to “level IV” (6000 to 7000K). The higher the driver's arousal level, the more likely it is to contribute to safe driving.

  Referring to the graph of FIG. 5B, the curve II in the graph indicates the tendency of the sensory evaluation of the concentration degree with respect to the color temperature (K). As shown by curve II, the degree of concentration tends to increase when the color temperature is low. Therefore, the driver's concentration can be improved by lowering the color temperature of the zone Z1 of the driver's seat to, for example, “level I” (3000 to 4000K).

  In addition, the illumination control unit 5 changes the color temperature of the zone Z3 in the second row right seat and the zone Z4 in the second row left seat from “level II” in order to bring the color temperature distribution of each zone closer to the reference color temperature distribution. The color tone of the illumination means is adjusted so as to increase to “level I”. For this purpose, for example, the room lamp system illumination control unit 52 may adjust the color tones of the room lamp 421, the intermediate pillar lamp 425, and the seat downlight lamp 426 so that the color temperature is lowered.

  Here, reference is made to the graph of FIG. A curve III in the graph indicates a tendency of sensory evaluation of warmth feeling with respect to the color temperature (K). As shown by the curve III, the warmth tends to be high when the color temperature is low. Therefore, by reducing the color temperature of the zones Z3 to Z6 in the second row and the third row to “level I” (3,000 to 4000 K), it is possible to improve the warmth of the passenger. By improving the feeling of warmth, it is thought that it contributes to the improvement of passenger comfort, especially in cold weather.

  Referring to the graph of FIG. 6B, a curve IV in the graph indicates a tendency of sensory evaluation of the feeling of cold with respect to the color temperature (K). As shown by curve IV, the cold feeling tends to increase when the color temperature is high. Therefore, by increasing the color temperature of the zones Z3 and Z4 in the second row to, for example, “level IV” (6000 to 7000 K), it is possible to improve the cold feeling of the passenger. By improving the feeling of cold, it is thought to contribute to the improvement of passenger comfort, especially in hot weather.

  In the above-mentioned embodiment, although the example which comprised this invention on the specific conditions was demonstrated, this invention can perform a various change and combination, and is not limited to this. For example, in the above-described embodiment, the example in which the distribution measuring unit measures the color tone together with the illuminance has been described. However, in the present invention, the illuminance distribution may be obtained without measuring the color tone.

DESCRIPTION OF SYMBOLS 1 Database 2 Light source distribution measurement means 3 Composite image generation means 4 Illumination means 5 Illumination control means 51 Front seat peripheral equipment illumination control part 52 Room lamp system illumination control part 53 Second and third seat peripheral equipment illumination control part

Claims (5)

A database storing data of the three-dimensional shape and reflection characteristics of members constituting the vehicle interior, and data of a reference illuminance distribution in the vehicle interior;
A light source distribution measuring means arranged in the passenger compartment for measuring illuminance;
Based on the illuminance measured by the light source distribution measuring means and the data of the three-dimensional shape and reflection characteristics of the members constituting the vehicle interior read from the database, the composite image generating means for generating a vehicle interior composite image When,
A plurality of lighting means arranged in the passenger compartment;
Illumination control means for determining the illuminance distribution in the vehicle interior from the vehicle interior composite image, and controlling the plurality of illumination means so that the illuminance distribution approaches the reference illuminance distribution read from the database;
A vehicle lighting control device comprising: The database stores reference color temperature data in the passenger compartment,
The light source distribution measuring means measures chromaticity,
At least one of the plurality of illumination means is a chromaticity variable illumination means capable of adjusting chromaticity,
The composite image generating means is based on the illuminance and chromaticity measured by the light source distribution measuring means, and the data of the three-dimensional shape and reflection characteristics of the members constituting the vehicle interior read from the database. Generate indoor composite images,
The illumination control unit obtains a color temperature in a vehicle interior from the vehicle interior composite image, and adjusts the chromaticity of the chromaticity variable illumination unit so that the color temperature approaches the reference color temperature read from the database. ,
The vehicle lighting control device according to claim 1. The reference color temperature is set for each of a plurality of zones obtained by dividing the vehicle interior,
3. The vehicle illumination control device according to claim 2, wherein the illumination control unit controls the chromaticity variable illumination unit so that a temperature distribution approaches the reference color temperature for each zone. 4. The vehicle illumination control device according to claim 2, wherein the chromaticity variable illumination means is formed of a light emitting diode. The vehicle light control device according to claim 1, wherein the light source distribution measuring unit is an omnidirectional camera.

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