JP7206522B2 - Vehicle interior lighting control system and vehicle interior lighting control method - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle interior lighting control system and a vehicle interior lighting control method for controlling lighting in a vehicle interior.

In recent years, autonomous driving technology has been developed that enables autonomous driving without the need for driver operation. is in the stage of commercialization.

According to such automatic driving technology, passengers can spend their leisure time freely without worrying about driving operations, so technologies have been developed to relax passengers during automatic driving. . For example, during automatic driving, by allowing a wider range of displacement of the relative movement between each part of the seat during automatic driving than during manual driving, the seat cushion and seat back move relative to each other. A vehicle seat is known in which a driver's seat can be displaced to a fully-flat reclining state (see Patent Document 1).

JP 2017-170942 A

According to the conventional technology described in Patent Literature 1, it is possible to realize a posture for relaxing the passenger seated on the seat during automatic driving. However, as a result of extensive studies by the inventors of the present application, it is important not only to change the posture of the passenger but also to appropriately control the lighting in the passenger compartment in order to stably realize the relaxed state of the passenger. I found out.

It should be noted that the technology for stably achieving a relaxed state for passengers during automatic driving is similar to that of passengers other than the driver in conventional vehicles that require human driving operations (i.e., passengers who need to drive). It is also useful for passengers who do not

In view of the above background, the present invention aims to provide a vehicle interior lighting control system and a vehicle interior lighting control method that are capable of stably realizing a relaxed state for passengers that does not require driving operations. Make it an issue.

In order to solve the above problems, one aspect of the present invention is a vehicle interior lighting control system (1) for controlling lighting in the vehicle interior of an automobile, comprising a heartbeat sensor ( 23), one or more first light sources (31, 32, 46) that illuminate the interior of the vehicle, a seat control device (2) that controls the posture of the seat (3) on which the passenger sits, and the (1) a light emission control device (2) for controlling a light emission state of a light source, wherein the light emission control device controls, when the posture of the seat is changed from the standard state to the backward inclined state by the control of the seat control device, the The light emitting state of the first light source is controlled based on the measured value of the heart rate sensor.

According to this aspect, the light emitting state of the first light source can be controlled so as to relax the passenger based on the measurement value of the heart rate sensor while the seat on which the passenger who does not require driving operation is seated is tilted backward. Therefore, it is possible to stably realize a relaxed state of the passenger.

In the above aspect, the seat further includes a body pressure sensor (24) that measures pressure due to seating of the occupant, and the seat control device controls the posture of the seat based on the measurement result of the body pressure sensor. should be controlled.

According to this aspect, it is possible to estimate the physical characteristics of the occupant (for example, body type and weight) based on the measurement result of the body pressure sensor. , can be appropriately realized according to the physical characteristics of the passenger.

In the above aspect, at least one of said first light sources may be provided in a passenger door (30) adjacent to said seat.

According to this aspect, even when there are a plurality of passengers in the passenger compartment, it is possible to effectively illuminate the vicinity of the target passengers, so that the relaxed state can be realized individually.

In the above aspect, at least one of the first light sources may be provided on the floor located in front of the seat.

According to this aspect, even when there are a plurality of passengers in the passenger compartment, it is possible to effectively illuminate the vicinity of the target passengers, so that the relaxed state can be realized individually.

In the above aspect, the light emission control device sets the first light source to the first light emission of the standard color when the heart rate based on the measurement value of the heart rate sensor while the passenger is seated is less than a predetermined threshold. The first light source may be controlled to emit light in a second emission color different from the first emission color when the heart rate of the passenger in the seated state is equal to or greater than the threshold value. .

According to this aspect, when the passenger's heart rate is equal to or greater than a predetermined threshold (that is, when the passenger is not in a relaxed state), the control is performed to emit light in the second emission color for relaxing the passenger. Therefore, it is possible to avoid giving a sense of discomfort to the passenger who is in a relaxed state due to an unnecessary change in the emission color (standard color) of the first light source.

In the above aspect, the light emission control device causes the first light source to emit light in a third emission color different from the first and second emission colors before the passenger sits on the seat. should be controlled.

According to this aspect, before the passenger is seated, the surroundings of the passenger are easier to see than the first emission color, which is the standard color, or the second emission color for relaxing the passenger. can be emitted in the third emission color with priority given to .

In the above aspect, the light emission control device preferably suspends control of the light emission state of the first light source while the seat is being operated under the control of the seat control device.

According to this aspect, in controlling the light emitting state of the first light source, it is possible to eliminate the influence of the operation of the seat on the passenger's heart rate.

In the above aspect, further comprising one or more second light sources (45) for illuminating the interior of the vehicle, the light emission control device adjusts the light emission state of the second light sources based on the state of the passenger regarding seating on the seat. should be controlled.

According to this aspect, it is possible to appropriately illuminate the interior of the vehicle by the second light source, in addition to the light emission control by the first light source for relaxing the target passenger.

In the above aspect, at least one of the second light sources may be provided on the ceiling (44) inside the vehicle compartment.

According to this aspect, it is possible to illuminate the interior of the vehicle over a wide range with a simple configuration.

In the above aspect, when the seat posture is in the standard state, the light emission control device causes the second light source to emit light with a first brightness, which is standard brightness, and the seat posture is in the standard state. It is preferable to control the second light source to emit light with a second brightness that is darker than the first brightness when the vehicle is in the backward tilted state.

According to this aspect, it is possible to ensure the visibility in the vehicle interior by the light emission of the second light source while preventing the occupant's relaxed state from being adversely affected by the light emission of the second light source.

In the above aspect, the light emission control device may control the second light source to emit light with a third brightness brighter than the second brightness before the passenger sits on the seat.

According to this aspect, before the passenger sits down, the surroundings of the passenger can be more easily recognized than the first brightness, which is the standard brightness, and the second brightness for relaxing the passenger. It is possible to emit light with a third brightness that gives priority to .

Further, in order to solve the above-described problems, one aspect of the present invention is a vehicle interior lighting control method for illuminating the vehicle interior of a vehicle with one or more first light sources, the method comprising: a body pressure measurement step of measuring pressure; a heartbeat measurement step of measuring the heartbeat of the passenger; a seat attitude control step of controlling the attitude of the seat; and a light emission control step of controlling the light emission state of the first light source. wherein the light emission control step controls the light emission state of the first light source based on the measured value of the heartbeat when the posture of the seat is changed from the standard state to the backward tilted state by the seat posture control step. It is characterized by

According to this aspect, the light emitting state of the first light source can be controlled so as to relax the passenger based on the measurement value of the heart rate sensor while the seat on which the passenger who does not require driving operation is seated is tilted backward. Therefore, it is possible to stably realize a relaxed state of the passenger.

According to one aspect of the present invention, the light emitting state of the first light source is controlled based on the measurement value of the heart rate sensor so as to relax the passenger while the seat on which the passenger who does not require driving operation is seated is tilted backward. Therefore, it is possible to stably realize the relaxed state of the passenger.

According to the aspect, the seat further includes a body pressure sensor that measures pressure due to the seating of the occupant, and the seat control device controls the posture of the seat based on the measurement result of the body pressure sensor, Since it is possible to estimate the physical characteristics of the passenger (for example, body shape and weight) based on the measurement results from the body pressure sensor, the rearward tilting of the seat to relax the passenger can be adjusted according to the physical condition of the passenger. Appropriate realization is possible according to the characteristics.

According to the mode in which at least one of the first light sources is provided at the boarding door adjacent to the seat, even when there are a plurality of passengers in the vehicle, the vicinity of the target passenger is effectively illuminated. Since it becomes possible, it becomes possible to realize a relaxed state individually.

The light emission control device causes the first light source to emit light in a first emission color, which is a standard color, when the heart rate based on the measurement value of the heart rate sensor in the seated state of the passenger is less than a predetermined threshold value. According to the aspect of controlling the first light source to emit light in a second emission color different from the first emission color when the heart rate of the passenger in the seated state is equal to or greater than the threshold, When the heart rate of the passenger is equal to or higher than a predetermined threshold (that is, when the passenger is not in a relaxed state), the light can be controlled to emit light in the second emission color for relaxing the passenger. It is possible to avoid giving a sense of discomfort to a passenger in a relaxed state due to an unnecessary change in the emission color (standard color) of one light source.

According to the aspect, the light emission control device controls the first light source to emit light in a third emission color different from the first and second emission colors before the passenger sits on the seat. For example, before the passenger sits down, the first emission color, which is the standard color, and the second emission color for relaxing the passenger, give priority to making the surroundings of the passenger easier to see. It is possible to emit light in three emission colors.

According to the mode in which the light emission control device interrupts the control of the light emission state of the first light source during the operation of the seat under the control of the seat control device, in controlling the light emission state of the first light source, the operation of the seat It is possible to eliminate the influence on the passenger's heart rate due to

Further comprising one or more second light sources that illuminate the interior of the vehicle, the light emission control device controls the light emission state of the second light source based on the state of the passenger regarding seating on the seat. Apart from the light emission control by the first light source for relaxing the passenger, it is possible to appropriately illuminate the vehicle interior by the second light source.

According to the mode in which at least one of the first light sources is provided in the ceiling portion of the vehicle interior, it is possible to illuminate the interior of the vehicle over a wide range with a simple configuration.

When the posture of the seat is in the standard state, the light emission control device causes the second light source to emit light with a first brightness that is standard brightness, and the posture of the seat is in the backward tilting state. In some cases, according to the aspect of controlling the second light source to emit light with a second brightness that is darker than the first brightness, it is possible to prevent the emission of the second light source from adversely affecting the relaxed state of the passenger. At the same time, it is possible to secure the visibility in the vehicle interior by the light emission of the second light source.

According to the aspect, the light emission control device controls the second light source to emit light with a third brightness brighter than the second brightness before the passenger sits on the seat. Before the passenger is seated, the third brightness prioritizes making the surroundings of the passenger easier to see than the first brightness, which is the standard brightness, and the second brightness for relaxing the passenger. It is possible to emit light with

BRIEF DESCRIPTION OF THE DRAWINGS The block diagram which shows the outline of the lighting control system for vehicle interiors which concerns on embodiment. Functional block diagram of cabin lighting control system Flow chart showing the flow of lighting control processing by the vehicle interior lighting control system Explanatory diagram showing an overview of lighting control processing by the vehicle interior lighting control system

An embodiment in which a vehicle interior lighting control system and a vehicle interior lighting control method according to the present invention are applied to a vehicle will be described below with reference to the drawings. In the following description, the front, rear, left, and right are defined with reference to the passenger seated on the seat. A common number is assigned to the same configuration provided in a pair on the left and right, and description thereof is omitted.

As shown in FIG. 1, a vehicle interior lighting control system 1 is an ECU (Electronic Control Unit) as a control device (seat control device, light emission control device) mounted in an appropriate location of an automobile (only the main part is shown in FIG. 1). ) 2, and by controlling the posture of the seat 3 and the lighting in the vehicle interior based on the information from each sensor, the passenger (not shown) seated on the seat 3 is placed in a relaxed state ( relaxed state). The posture of the seat 3 and the lighting in the vehicle interior can be controlled not only by the ECU 2 but also by separate control devices that cooperate with each other.

As shown in FIG. 1, the seat 3 has a seat cushion 11 provided on the floor 10 of the passenger compartment, and a seat back 12 provided at the rear end of the seat cushion so as to be rotatable at a desired angle. The seat back 12 is driven by a seat drive device 13 built into the seat 3 . Seat 3 is any seat in the passenger compartment if the vehicle is an autonomous vehicle that does not require driver intervention. Also, in the case where the automobile requires the assistance of the driver, the seat 3 is a passenger seat, a rear seat, or the like, excluding the driver's seat.

The seat 3 also has a headrest 14 provided on the upper end of the seat back 12 so as to be movable up and down, and an ottoman 15 provided on the front end of the seat cushion 11 so as to be rotatable. The rotation axis of the seat back 12 with respect to the seat cushion 11 and the rotation axis of the ottoman 15 with respect to the seat cushion 11 extend parallel to each other in the left-right direction.

The seat back 12 may be configured to include a seat back lower portion rotatably provided at the rear end of the seat cushion 11 and a seat back upper portion rotatably provided at the seat back lower portion.

A pair of side covers 21 are provided on the left and right sides of the seat cushion 11 . The rear upper ends of the left and right side covers 21 protrude upward and are located on the sides of the seatback 12, and constitute left and right armrests 22, respectively.

The left armrest 22 is provided with a heartbeat sensor 23 that measures the heartbeat of the passenger by contacting the left arm of the seated passenger. However, as the heartbeat sensor 23, other known sensors (for example, a wristwatch-type heartbeat sensor capable of wireless communication with the vehicle interior lighting control system 1) can be used as long as they can measure at least the heartbeat of the passenger. As shown in FIG. 2 , the heartbeat sensor 23 is communicably connected to the ECU 2 and appropriately transmits detection results (detection signals) to the ECU 2 .

Inside the seat cushion 11, a sheet-shaped body pressure sensor 24 is provided so as to face the seat surface 11a forming the upper surface of the seat cushion 11 from the inside. As shown in FIG. 2 , the body pressure sensor 24 is communicably connected to the ECU 2 and appropriately transmits detection results (detection signals) to the ECU 2 . The seat surface 11a of the seat cushion 11 can be configured to be inclined between an initial position extending substantially horizontally and an inclined position where the front end is moved upward with respect to the initial position.

The body pressure sensor 24 can measure the magnitude and pressure distribution of the pressure exerted on each part of the seat surface 11a due to the seating of the passenger. The vehicle interior lighting control system 1 can estimate the physical characteristics (body size, weight, etc.) of the passenger based on the measurement results of the body pressure sensor 24 . However, the body pressure sensor 24 is not limited to a sheet-like sensor, and other known body pressure sensors can be appropriately employed. For example, a configuration is possible in which a plurality of body pressure sensors are arranged at predetermined intervals so as to correspond to the area of the seat surface 11a.

In addition, in the seat 3, by providing a weight sensor 25 under the seat cushion 11, instead of the body pressure sensor 24 or in cooperation with the body pressure sensor 24, the physical characteristics (weight) of the occupant are estimated. is also possible. As shown in FIG. 2 , the weight sensor 25 is communicably connected to the ECU 2 and appropriately transmits detection results (detection signals) to the ECU 2 .

In order to guide the occupant to a relaxed state (relaxed state), the seat back 12 of the seat 3 is changed from the upright posture (standard state) indicated by the solid line in FIG. Displacement is possible. At this time, in the seat 3, the seat cushion 11 may be tilted backward and the ottoman 15 may be deployed upward by a known driving device.

Inside the passenger compartment, a passenger door 30 positioned adjacent to and to the right of the seat 3 is provided with a plurality of door lamps (first light sources) 31, 32 for illuminating the passenger compartment (in particular, near the passenger). is provided. Here, the first door lamp 31 is provided along the armrest 33, and the second door lamp 32 is provided along the edge of the window 34 provided in the door 30 (here, part of the upper edge and rear edge). are placed along the However, the number and arrangement of door lamps are not limited to those shown here, and can be changed as appropriate as long as at least the vicinity of the passenger can be illuminated.

Further, on the armrest 33 of the door 30, there is a first operation switch (SW) 41 for the passenger to change the seat 3 to the rearward tilting posture (to rotate the seat back 12 rearward), A second operation switch 42 is provided for changing the tilted position of the seat 3 to the upright position. The second operation switch 42 is arranged behind the first operation switch 41, thereby facilitating the operation by the passenger seated on the seat 3 tilted backward.

A room lamp (second light source) 45 is provided on a ceiling portion 44 inside the vehicle compartment. The room lamp 45 can illuminate the interior of the vehicle in a wider range than the door lamps 31 and 32 . Furthermore, a floor lamp 46 extending in the front-rear direction is provided at the right end of the floor 10 in front of the seat 3 . The floor lamp 46 can illuminate the vicinity of the passenger's feet.

As the door lamps 31, 32, the room lamp 45, and the floor lamp 46, LED lamps, liquid crystal panels, and LED lamps can be used as long as the light emission state (here, at least one of brightness and color) can be changed as described later. A known lighting device such as an organic EL panel can be used. Also, here, an example of uniformly controlling the light emission state of the door lamps 31 and 32, the room lamp 45, and the floor lamp 46 is shown, but some of these lamps may be omitted or the light emission state of each may be changed. Individual control is also possible.

As shown in FIG. 2, the ECU (seat control device, light emission control device) 2 controls the operation of the seat drive device 13 (that is, the posture of the seat 3) and the lamps 31, 32, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, 45, and 45 based on a predetermined control program. 46, a memory 52 for storing programs and various data necessary for the control executed by the processor 51, and an input/output interface (I/F) 53. The input/output interface 53 inputs detection signals from the sensors 23 to 25, inputs operation signals from the operation switches 41 and 42, and outputs control signals to the seat driving device 13 and the lamps 31, 32, 45, and 46. and so on, respectively.

According to the vehicle interior lighting control system 1, the seat 3 on which the passenger who does not need driving operation is seated is tilted backward, and the door lamp is set so as to relax the passenger based on the measurement value of the heartbeat sensor 23. 31, 32, the room lamp 45, and the floor lamp 46 can be controlled, it is possible to stably achieve a relaxed state for the passenger.

Next, a processing flow of lighting control by the vehicle interior lighting control system 1 shown in FIG. 3 will be described with reference to FIG. Note that FIG. 4 shows changes in the state of the passenger, with respect to changes in body pressure sensor 24, heartbeat sensor 23, room lamp 45, door lamps 31 and 32, floor lamp 46, and the operation of first and second operation switches 41 and 42. Each situation is shown in chronological order.

As shown in FIG. 3, in the vehicle interior lighting control system 1, when a passenger gets into the vehicle (S101: Yes), the room lamp 45, the door lamps 31 and 32, and the floor lamp 46 are turned on. Here, boarding of the passenger can be detected based on a known method (for example, an operation such as unlocking or opening/closing the door 30).

As also shown in FIG. 4, in the vehicle interior lighting control system 1, the brightness level of the interior lamp 45 is set to "high" (third brightness) when the passenger gets in, and the door lamp 31 , 32 and floor lamp 46 are set to "rainbow" (third emission color) (S102). At this time, the color of the door lamps 31 and 32 and the floor lamp 46 should be set to a color that gives priority to facilitating visibility of the surroundings of the passenger.

Also, here, the brightness of the room lamp 45 (at least one of total luminous flux, illuminance, luminous intensity, and brightness) can be set to three levels of "low", "standard (medium)", and "high". be. Also, the colors of the door lamps 31 and 32 and the floor lamp 46 can be set to one of three colors of "rainbow", "blue", and "amber".

However, the number of brightness levels of the room lamp 45 and the types of colors of the door lamps 31 and 32 and the floor lamp 46 are not limited to the configuration shown here, and various changes are possible. Also, for example, it is possible to set different colors for the door lamps 31 and 32 and the floor lamp 46 . Although only the brightness of the room lamp 45 is changed here, it is also possible to change the color of the room lamp 45 . Also, although only the colors of the door lamps 31, 32 and the floor lamp 46 are changed here, the brightness of the door lamps 31, 32 and the floor lamp 46 can also be changed.

Next, in the passenger compartment lighting control system 1, when the passenger sits down (becomes in a seated state) (S103: Yes), the heart rate sensor 23 is turned on, and the brightness level of the room lamp 45 is changed to " "Standard" (first brightness), and the color of the door lamps 31, 32 and floor lamp 46 is set to "blue" (second emission color), which is a color for relaxing passengers. (S104). Here, when the passenger is seated, the seat 3 is in a standing posture (standard state). Also, the seating of the passenger can be detected by the body pressure sensor 24 . Furthermore, the color for relaxing the passenger is not limited to "blue", and it is possible to set another color (for example, a desired color selected in advance by the passenger).

Here, as also shown in FIG. 4, the color of the door lamps 31 and 32 and the floor lamp 46 is set to "blue" which is a color for relaxing the passenger after the passenger is seated. However, as will be described later, after the passenger is seated, the standard color is set to "amber", and then the passenger's heart rate based on the measurement value of the heart rate sensor 23 reaches a predetermined threshold value (in a relaxed state). A configuration is also possible in which the color is changed to “blue” when it is determined to be equal to or greater than a threshold value for determining whether or not there is. Also, when the passenger's heart rate is less than a predetermined threshold, the colors of the door lamps 31 and 32 and the floor lamp 46 may be changed from "blue" to "amber" as will be described later. Multiple thresholds for the passenger's heart rate can also be set.

Subsequently, as shown in FIG. 4, the first operation switch 41 is turned on to inform the passenger that the operation to change the seat 3 to the rearward tilting posture is possible. Therefore, when the passenger operates the first operation switch 41, the seat 3 starts to operate (that is, the seat back 12 tilts) (S105: Yes). As a result, the heartbeat sensor 23 is turned off (that is, control of the door lamps 31 and 32 and the floor lamp 46 is suspended), and the brightness level of the room lamp 45 is set to "low" (second brightness). Also, the color of the door lamps 31 and 32 and the floor lamp 46 is set to the standard color "amber" (first emission color) (S106). If the passenger's heart rate immediately before the seat 3 starts operating is equal to or greater than a predetermined threshold, the color of the door lamps 31 and 32 and the floor lamp 46 may be set to "blue" in step S106. good.

As described above, in the vehicle interior lighting control system 1, control of the lighting state of the door lamps 31 and 32 and the floor lamp 46 is interrupted while the seat 3 is in operation. can be eliminated.

As described above, the vehicle interior lighting control system 1 estimates the physical characteristics of the passenger (body size, weight, etc.) based on the measurement results of the body pressure sensor 24, and based on the estimation results, It is possible to determine the backward tilting posture (eg, the angle of the seat back 12) in step S105. According to this, it is possible to appropriately realize a backward tilting state of the seat for relaxing the passenger according to the physical characteristics of the passenger.

After that, when the tilting of the seat 3 is completed (that is, the seat 3 is displaced to the rearward tilting posture) (S107: Yes), the heart rate sensor 23 is turned on again in the vehicle interior lighting control system 1 (S108). As a result, determination of the heart rate of the passenger is started (ST109), and when the heart rate exceeds a predetermined threshold (S109: Yes), the colors of the door lamps 31 and 32 and the floor lamp 46 change to the color of the boarding lamp. It is set to "blue" which is a color for relaxing the person (ST110). In addition, in the passenger compartment lighting control system 1, when the passenger's heart rate is less than the predetermined threshold (S109: No), the color of the door lamps 31 and 32 and the floor lamp 46 is changed from "blue" to "amber." You may

When the tilting of the seat 3 ends (S107: Yes), as shown in FIG. 4, the second operation switch is operated to inform the passenger that the seat 3 can be operated to return to the standing posture. 42 lights up. Therefore, when the passenger operates the second operation switch 42, the seat 3 starts to operate (that is, the seat back 12 stands up) (S111: Yes). As a result, the heartbeat sensor 23 is turned off (S112).

The processes of steps S109 to S112 described above are repeatedly executed until the passenger finally leaves the seat 3 and leaves (or gets off the vehicle) (S113: Yes).

In such a vehicle interior lighting control system 1, the colors of the door lamps 31 and 32 and the floor lamp 46 are controlled based on the measurement value of the heart rate sensor 23. It is possible to effectively illuminate the vicinity of the passenger to be in a relaxed state individually.

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified.

1: Interior lighting control system 2: ECU
3: Seat 10 : Floor 11 : Seat cushion 11a : Seat surface 12 : Seat back 13 : Seat driving device 14 : Headrest 15 : Ottoman 21 : Side cover 22 : Armrest 23 : Heart rate sensor 24 : Body pressure sensor 25 : Weight sensor 30 : Door 31 : First door lamp (first light source)
32: second door lamp (first light source)
33: Armrest 34: Window 37: Room lamp 41: First operation switch 42: Second operation switch 44: Ceiling 45: Room lamp (second light source)
46: floor lamp (first light source)
51: processor 52: memory 53: input/output interface

Claims (7)

A cabin lighting control system for controlling lighting in a cabin of an automobile, comprising:
a heartbeat sensor that measures the heartbeat of the passenger;
a body pressure sensor that measures pressure due to seating of the passenger;
one or more first light sources that illuminate the interior of the vehicle;
a seat control device that controls the posture of the seat on which the passenger sits;
a light emission control device that controls the light emission state of the first light source,
The light emission control device controls the light emission state of the first light source based on the measurement value of the heart rate sensor when the seat posture is in a standard state under the control of the seat control device,
The light emission control device interrupts the measurement of the heart rate sensor when the seat posture starts to move from the standard state to the backward tilted state under the control of the seat control device, and the seat control device A lighting control system for a passenger compartment, wherein the posture of the seat is controlled based on the result of measurement by a body pressure sensor . When the posture of the seat is changed from the standard state to the backward tilted state under the control of the seat control device, the light emission control device controls the light emission control device based on the measurement value of the heartbeat sensor when the posture of the seat is in the standard state. 1 to control the light emission state of the light source,
The light emission control device causes the first light source to emit light in a first emission color, which is a standard color, when the heart rate based on the measurement value of the heart rate sensor in the seated state of the passenger is less than a predetermined threshold value. ,
The first light source is controlled to emit light in a second emission color different from the first emission color when the heart rate of the passenger in the seated state is equal to or higher than the threshold value. The vehicle interior lighting control system according to claim 1. The light emission control device, during operation of the seat under control of the seat control device,
The vehicle interior lighting control system according to claim 1 , wherein the control of the light emitting state of the first light source is interrupted . The light emission control device lights up an operation switch that informs the passenger that the seat can be actuated from a standard state to a backward tilted state under the control of the seat control device. A vehicle interior lighting control system according to claim 1. The light emission control device restarts the measurement of the heart rate sensor when the posture of the seat is completely changed from the standard state to the backward tilted state under the control of the seat control device. The vehicle interior lighting control system according to any one of claims 1 to 4. The light emission control device notifies the passenger that, when the seat control device completes the movement of the seat posture from the standard state to the rearward tilting state, the operation of returning the seat posture to the standing posture is possible. The operation switch that informs the person lights up
The vehicle interior lighting control system according to any one of claims 1 to 5, characterized in that: 7. The vehicle interior lighting control system according to any one of claims 1 to 6 , wherein the measurement of the heartbeat sensor is interrupted when the operation of returning the posture of the seat to the standing posture is started. .

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