Cabin environment control device

Abstract

To reduce mental fatigue of an occupant.SOLUTION: A cabin environment control device 240 includes: an occupant information acquisition section 231 that acquires fatigue information indicating a degree of fatigue of an occupant on the basis of biological information on the occupant of a vehicle; an air conditioner 80 that enables the occupant to designate an air-conditioning temperature within a cabin as a first temperature; and a control section 241 that instructs the air conditioner 80 to change the air-conditioning temperature from the first temperature to a second temperature lower than the first temperature when the degree of the fatigue of the occupant acquired by the occupant information acquisition section 231 is a predetermined value or larger.SELECTED DRAWING: Figure 3A

Description

[Technical Field]

[0001] The present invention relates to a vehicle interior environment control device for controlling the environment in a vehicle interior. [Background technology]

[0002] As this type of technology, technology has been developed to reduce physical and mental fatigue not only for the driver of a vehicle but also for passengers in the vehicle. For example, Patent Document 1 (JP 2013-518632 A) discloses a fatigue recovery method that transmits instructions to a passenger by controlling a massage device built into a seat backrest, thereby revitalizing the passenger physically and mentally. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Special Publication No. 2013-518632 Summary of the Invention [Problem to be solved by the invention]

[0004] However, conventional techniques have been less effective for occupants who find physical stimuli unpleasant or for occupants who primarily want to reduce mental fatigue. [Means for solving the problem]

[0005] One embodiment of the present invention provides a vehicle interior environment control device that includes an occupant information acquisition unit that acquires fatigue level information indicating the fatigue level of a vehicle occupant based on the biometric information of the occupant, an air conditioning device that allows the occupant to specify the air conditioning temperature in the vehicle interior as a first temperature, and a control unit that instructs the air conditioning device to change the air conditioning temperature from the first temperature to a second temperature lower than the first temperature when the occupant's fatigue level acquired by the occupant information acquisition unit is equal to or higher than a predetermined value. [Effects of the Invention]

[0006] According to the present invention, it is possible to reduce the mental fatigue of the occupants. [Brief explanation of the drawings]

[0007] [Figure 1] 1 is a schematic diagram showing an example of an IVI system including a vehicle interior environment control device. [Figure 2] FIG. 10 is a diagram illustrating an example of an operation menu screen. [Figure 3A] FIG. 2 is a block diagram illustrating the configuration of a main part of the vehicle interior environment control device. [Figure 3B] FIG. 2 is a block diagram illustrating the main configuration of a terminal. [Figure 3C] FIG. 2 is a block diagram illustrating the main configuration of a vehicle sensor group and an in-vehicle camera. [Figure 3D] FIG. 2 is a block diagram illustrating the configuration of the main parts of an input device and an output device. [Figure 4] 4 is a flowchart illustrating the flow of a vehicle interior environment control process performed by a program. DETAILED DESCRIPTION OF THE INVENTION

[0008] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. <Overview of vehicle cabin environment control device> The vehicle interior environment control device according to the embodiment controls the vehicle interior environment so as to reduce mental fatigue of people in the vehicle interior of a moving vehicle such as an automobile. In the embodiment, as an example, the vehicle interior environment control device adjusts the air conditioning temperature in the vehicle interior.

[0009] Generally, the temperature of the vehicle interior is controlled to cool the vehicle interior when the temperature inside the vehicle interior rises above a preset temperature, and to heat the vehicle interior when the temperature inside the vehicle interior falls below the preset temperature. In other words, the temperature is controlled to maintain the preset temperature. On the other hand, passengers in the vehicle may experience discomfort, such as stiffness in the neck or back, due to maintaining a seated position for a long period of time. In such cases, being surrounded by slightly cooler air can refresh the passengers and make them feel refreshed. Therefore, in this embodiment, the air conditioning temperature in the vehicle cabin is automatically adjusted for each seating position according to the fatigue level of each passenger. The vehicle interior environment control device provides a service that soothes occupants and reduces mental fatigue by adjusting the temperature inside the vehicle.

[0010] In this embodiment, the vehicle is provided with a vehicle interior environment control device as one of the functions of an IVI (In-Vehicle Infotainment) system. Such a vehicle interior environment control device will be described in more detail below.

[0011] <System configuration example> 1 is a schematic diagram showing an example of an IVI system including a vehicle interior environment control device. The IVI system includes a control device 20, a group of vehicle sensors 12 of a vehicle 100 as a moving body, a display unit 51, a projection unit 52, and audio playback units 53A to 53D that constitute an output device 50 provided in the vehicle 100, operation detection units 11A and 11B and microphones 111A and 111B that constitute an input device 11 provided in the vehicle 100, a front seat camera 131 and a rear seat camera 132 that constitute an interior camera 13 provided in the vehicle 100, a terminal 2A used by a front seat occupant P1 in the vehicle cabin, and a terminal 2B used by a rear seat occupant P2 in the vehicle cabin.

[0012] The control device 20 and the terminals 2A and 2B are configured to be capable of wireless communication. The control device 20, the output device 50, the input device 11, the vehicle sensor group 12, and the in-vehicle camera 13 are configured to be capable of wired communication using a CAN (Controller Area Network) or the like. The vehicle 100 is equipped with an air conditioning unit 80 that adjusts the temperature and humidity inside the vehicle cabin, a light-admitting device 70 (which may be called a light-admitting sunroof) that can adjust the amount of light entering the vehicle cabin using light-admitting glass that covers almost the entire ceiling of the vehicle cabin, and an ambient light 60A for the front seats and an ambient light 60B for the rear seats that constitute the lighting device 60.

[0013] As an example, the terminals 2A and 2B are configured by smartphones used by the occupants P1 and P2, respectively. The terminals 2A and 2B may be held in holders (not shown) installed on the seats where the occupants P1 and P2 sit. Although two terminals 2A and 2B are shown as terminals used by occupants P1 and P2, the actual number of terminals varies depending on the number of occupants, and is four when there are four occupants. Furthermore, the number of cameras constituting the in-vehicle camera 13, the number of operation detection units and microphones constituting the input device 11, and the number of display units, projection units and audio playback units constituting the output device 50 may also be changed as appropriate depending on the number of occupants.

[0014] 2 is a diagram illustrating an example of an operation menu screen of the IVI system of FIG. 1. In this embodiment, the operation menu screen is projected or displayed on output device 50 (projection unit 52, display unit 51). When a menu button (which may also be called an icon) displayed on output device 50 is touched or when a voice corresponding to the menu button is input from microphones 111A and 111B that constitute input device 11, control device 20 starts operation of a function corresponding to the menu selected by the touch operation or voice input.

[0015] The operation menu screen illustrated in FIG. 2 includes menu buttons corresponding to a "conversation promotion" function that assists conversations between occupants of vehicle 100, an "acoustic healing" function that provides soothing relief to occupants through sounds played by audio playback units 53A-53D, an "air conditioning healing" function that provides soothing relief to occupants using air conditioning unit 80, a "route guidance" function that provides guidance on the driving route to the destination, a "following (audio)" function that connects the terminal of an occupant who has exited vehicle 100 with the communication unit (described later) of control device 20 to transmit external audio to occupants in the vehicle cabin, a "following (video)" function that connects the terminal of an occupant who has exited vehicle 100 with the communication unit (described later) of control device 20 to transmit external video to occupants in the vehicle cabin, a "vehicle information" function that sets functions of vehicle 100 and operates auxiliary equipment, a "media playback" function that plays media containing content from output device 50, and other functions (description omitted).

[0016] The following description will focus on the function of the control device 20 as a vehicle interior environment control device when the "air conditioning healing" button on the operation menu screen is operated. Figures 3A to 3D are diagrams illustrating configuration examples of the various parts of Figure 1. <Vehicle cabin environment control device> 3A is a block diagram illustrating the configuration of the main parts of the control device 20. The control device 20 includes an arithmetic processing unit such as an MPU (Micro Processing Unit) (not shown), and performs various information processing, control processing, and the like required by the control device 20 by reading and executing predetermined programs stored in a storage unit (not shown).

[0017] The control device 20 includes, as functional components for the vehicle interior environment control device 240, an occupant information acquisition unit 231, an air conditioning control unit 241, a destination information acquisition unit 208, and a communication unit 209, and controls the IVI system to function as the vehicle interior environment control device 240.

[0018] (Occupant information acquisition unit) The occupant information acquisition unit 231 estimates the fatigue levels of the occupants P1 and P2 in the vehicle cabin using a predetermined learning process based on the biological information of the occupants P1 and P2 acquired by the terminals 2A and 2B. Here, the learning process may use an algorithm such as SVM (Support Vector Machines). In addition, the occupant information acquisition unit 231 may estimate the degree of fatigue of occupants P1 and P2 based on image information from the interior camera 13 (front seat camera 131, rear seat camera 132), for example, the number of yawns and blinks per specified period of time, and changes in posture since the beginning of the ride.

[0019] (Air conditioning control unit) When it is determined that air conditioning control is necessary to provide comfort to the occupants P1, P2, the air conditioning control unit 241 controls the air conditioner 80 to adjust the temperature, humidity, blown air volume, etc. at the seating positions of the occupants P1, P2. The air conditioner 80 is configured so that the temperature, etc. can be specified (or may be called set) for each seating position, in other words, for each occupant P1, P2. Furthermore, if the fatigue levels of the occupants P1, P2 acquired by the occupant information acquisition unit 231 are equal to or greater than a predetermined value, the air conditioning control unit 241 may instruct the air conditioner 80 to change the temperature from a first temperature designated by each occupant P1, P2 to a second temperature lower than the first temperature. The air conditioner 80 gradually lowers the temperature of the air sent to the target seating position from the first temperature to the second temperature over a period of, for example, about 30 minutes. The air conditioning control unit 241 is configured to be able to specify different values ​​for the second temperature for each seating position depending on the difference in the fatigue levels of the occupants P1 and P2. For example, the air conditioning control unit 241 may instruct the air conditioner 80 to lower the second temperature as the fatigue level of the occupant P1 or P2 at the target seating position increases. As an example, the second temperature may normally be set to one degree lower than the first temperature, and as the fatigue level of the occupant P1 or P2 increases, the second temperature may be set to two degrees lower or three degrees lower than the first temperature. Furthermore, the air conditioning control unit 241 may instruct the air conditioner 80 to change the air conditioning temperature at the target seating position from the second temperature to the first temperature as the vehicle 100 approaches the destination. The air conditioner 80 gradually increases the temperature of the air sent to the target seating position from the second temperature to the first temperature, for example, from about 30 minutes before the scheduled arrival time at the destination until the scheduled arrival time.

[0020] (Destination information acquisition department) The destination information acquisition unit 208 acquires destination information indicating a destination set for the IVI system to provide "route guidance."

[0021] (Communications Department) The communication unit 209 includes a short-range wireless communication module (not shown) that performs wireless communication with the terminals 2A and 2B, and a wired communication module (not shown) that performs wired communication using a CAN or the like. The short-range wireless communication module may employ a wireless communication method that has a direction detection function.

[0022] <terminal> 3B is a block diagram illustrating an example of the configuration of the main parts of terminal 2A. The configuration of terminal 2B is also similar to that of terminal 2A, and is therefore not shown. Terminal 2A includes an arithmetic processing unit such as an MPU (not shown), and performs various information processing, control processing, and the like required for the functional configuration described below by reading and executing a predetermined program (which may also be called an application) stored in a storage unit (not shown). Terminal 2A includes, as functional components, a personal information storage unit 21, a related information storage unit 22, a content storage unit 23, a biometric sensor group 24, and a communication unit 25. Generally, a smartphone is equipped with a display unit, an input unit, an audio playback unit, a camera, a position detection unit, etc., but illustrations and descriptions of these will be omitted. The terminal 2A may share functions with other devices such as a smart watch (not shown).

[0023] (Personal information storage unit) The personal information storage unit 21 stores personal information of the occupant P1 who carries the terminal 2A. When the IVI system functions as the vehicle interior environment control device 240, personal information is not required.

[0024] (Relationship information storage unit) The relationship information storage unit 22 stores relationship level information of the occupant P1 who uses the terminal 2A. When relationship level information indicating the degree of intimacy between the occupants P1 and P2 in the vehicle cabin is transmitted from the control device 20, the relationship information storage unit 22 stores the information. When the IVI system functions as the vehicle cabin environment control device 240, the relationship level information is not required.

[0025] (Content storage unit) The content storage unit 23 stores content collected by the occupant P1 who owns the terminal 2A, or information necessary for playing the content (for example, cloud storage for storing the content, URL of a server that streams the content, etc.). When the IVI system functions as the vehicle interior environment control device 240, sound content that the occupant P1 wants to listen to when tired may be stored in the content storage unit 23 in advance. The sound content includes voice content and music content.

[0026] (Biosensor group) The biosensor group 24 includes, for example, a heart rate sensor that acquires the heart rate of the occupant P1 carrying the terminal 2A, a respiration sensor that acquires the respiration rate, a blood flow velocity sensor that acquires the blood flow velocity, and an electrical skin resistance sensor that acquires the electrical skin resistance value (all of which are not shown). When the IVI system functions as the vehicle interior environment control device 240, the bioinformation of the occupant P1 collected by the biosensor group 24 is used by the occupant information acquisition unit 231 to estimate the fatigue level of the occupant P1.

[0027] (Communications Department) The communication unit 25 includes a short-range wireless communication module (not shown) that performs wireless communication with the control device 20, and a wired communication module (not shown) that performs wired communication using a CAN or the like.

[0028] FIG. 3C is a block diagram illustrating the configuration of the main parts of the vehicle sensor group 12 and the interior camera 13 of the vehicle 100. As shown in FIG. <Vehicle sensors> The vehicle sensor group 12 includes a vehicle speed sensor 121, a positioning sensor 122, and a camera 123. Generally, the vehicle 100 is equipped with sensors such as an acceleration sensor and radar, but these will not be shown or described here.

[0029] (vehicle speed sensor) The vehicle speed sensor 121 detects the speed of the vehicle 100 and outputs vehicle speed information to the control device 20. When the IVI system functions as the vehicle interior environment control device 240, the vehicle speed information is used to calculate the estimated time of arrival at the destination.

[0030] (positioning sensor) The positioning sensor 122 detects the current position of the vehicle 100 based on positioning signals from GPS (Global Positioning System) satellites, quasi-zenith satellites, etc. The positioning sensor 122 outputs a signal indicating the current position as position information to the control device 20. When the IVI system functions as the vehicle interior environment control device 240, the information on the current position is used to calculate the estimated time of arrival at the destination.

[0031] (camera) The camera 123 captures images of the surroundings of the vehicle 100. The camera 123 outputs data of the subject image as image information to the control device 20. The camera 123 can capture both still images and videos. When the IVI system functions as the vehicle interior environment control device 240, image information of the surroundings of the vehicle 100 is not required.

[0032] <In-vehicle camera> The vehicle interior camera 13 includes a front seat camera 131 and a rear seat camera 132. The front seat camera 131 captures an image of the upper body of an occupant P1 sitting in the front seat, and outputs the subject image data as image information to the control device 20. The rear seat camera 132 captures an image of the upper body of an occupant P2 sitting in the rear seat, and outputs the subject image data as image information to the control device 20.

[0033] FIG. 3D is a block diagram illustrating the configuration of the main parts of the input device 11 and the output device 50 of the control device 20 of the vehicle 100. As shown in FIG. <Input device> The input device 11 includes operation detection units 11A and 11B and microphones 111A and 111B. (Operation detection unit) The operation detection unit 11A is operated by a front seat passenger P1 and outputs an operation signal to the control device 20. The operation detection unit 11A may be configured as a pointing device that works in conjunction with a projected image projected by a projection unit 52, which will be described later. The operation detection unit 11B is provided on the display surface of the display unit 51. The operation detection unit 11B is operated by a rear seat passenger P2 and outputs an operation signal indicating a touch position to the control device 20.

[0034] (microphone) The microphone 111A collects the voice uttered by the front seat passenger P1 and outputs an audio signal to the control device 20. The microphone 111B collects the voice uttered by the rear seat passenger P2 and outputs an audio signal to the control device 20.

[0035] <Output device> The output device 50 includes a display unit 51, a projection unit 52, and an audio playback unit 53. The output device 50 is used, for example, to display the operation menu screen of Fig. 2, play content, and the like. The content to be played may be acquired via the communication unit 209 from terminals 2A and 2B carried by multiple occupants P1 and P2 in the vehicle cabin. The content may be acquired not only from the terminals 2A and 2B, but also from an external content management server via a communication network (not shown). The content management server includes a cloud storage that stores the content and a streaming server that plays the content. The content to be played is searched for and acquired by the control device 20 via the communication unit 209. The content to be played back may be video content (moving images, still images, text displays, icon displays, graphic displays, etc.) or sound content. As described above, the content storage unit 23 of the terminal 2A stores sound content that the occupant P1 wants to listen to when he or she is tired.

[0036] (Display) The display unit 51 has a screen such as a liquid crystal display, and displays image information based on a display signal output from the control device 20. The image information includes the operation menu screen of Fig. 2, images of video content, and the like.

[0037] (projection section) The projection unit 52 is configured by a head-up display (HUD) that is projected onto the windshield, for example, and projects image information based on a projection signal output from the control device 20. The image information includes the operation menu screen of FIG. 2, images of video content, etc.

[0038] (Audio playback section) The audio playback units 53A to 53D are configured as speakers that play back and output audio and the like, and play back audio content based on a playback signal output from the control device 20. Note that an audio output unit that outputs a content playback signal to headphones (not shown) or the like may also be provided.

[0039] <Explanation of the flowchart> Fig. 4 is a flowchart illustrating an example of a vehicle interior environment control process performed by a program executed by the MPU of the control device 20. When the "Air Conditioning Healing" button is operated on the operation menu screen of Fig. 2, the MPU of the control device 20 executes a program that performs the processing shown in Fig. 4 to cause the IVI system to function as the vehicle interior environment control device 240. While the program is being executed, the control device 20 functions as a control unit for the vehicle interior environment control device 240.

[0040] 4, the control device 20 starts wireless communication with the terminals 2A and 2B carried by the occupants P1 and P2 in the vehicle cabin via the communication unit 209, and then proceeds to step S2. If the communication unit 209 and the terminals 2A and 2B have already started wireless communication, the control device 20 proceeds directly to step S2.

[0041] In step S2, the control device 20 acquires the seating positions of the passengers P1 and P2 in the vehicle cabin based on image information from the vehicle interior camera 13 (front seat camera 131, rear seat camera 132), and proceeds to step S3. The control device 20 may acquire the seating positions of the occupants P1 and P2 based on the voices collected by the microphones 111A and 111B constituting the input device 11. The voice signal from the microphone 111A corresponds to the voice of the occupant P1 in the front seat, and the voice signal from the microphone 111B corresponds to the voice of the occupant P2 in the rear seat.

[0042] In step S3, the control device 20 causes the air conditioning control unit 241 to acquire the first temperature from the operation detection units 11A and 11B, and proceeds to step S4. More specifically, the air conditioning control unit 241 acquires information indicating the first temperature set by the front seat occupant P1 for the seating position of the occupant P1 via the operation detection unit 11A. The air conditioning control unit 241 also acquires information indicating the first temperature set by the rear seat occupant P2 for the seating position of the occupant P2 via the operation detection unit 11B. The first temperature set by the occupant P1 may or may not match the first temperature set by the occupant P2.

[0043] In step S4, the control device 20 instructs the air conditioning control unit 241 to the air conditioning device 80 to adjust the temperature to the first temperature, and then proceeds to step S5. To explain in more detail, the air conditioning control unit 241 instructs the air conditioning device 80 to adjust the temperature to the first temperature designated (which may also be called a setting) by each occupant P1, P2 for each seating position.

[0044] In step S5, the control device 20 acquires occupant information using the occupant information acquisition unit 231. More specifically, the occupant information acquisition unit 231 estimates the fatigue level of each occupant P1, P2 based on the biological information of each occupant P1, P2 whose seating position has been acquired, and proceeds to step S6.

[0045] In step S6, the control device 20 determines whether the estimated fatigue level is equal to or greater than a predetermined value using the air conditioning control unit 241. If the estimated fatigue level for each seating position is equal to or greater than the predetermined value, the air conditioning control unit 241 makes a positive judgment in step S6 and proceeds to step S7. On the other hand, if the estimated fatigue level for each seating position is less than the predetermined value, the air conditioning control unit 241 makes a negative judgment in step S6 and proceeds to step S11.

[0046] In step S7, the control device 20 instructs the air conditioning control unit 241 to adjust the air conditioning device 80 so that the temperature is changed from the first temperature specified by each occupant P1, P2 to a second temperature lower than the first temperature for each seating position, and then proceeds to step S8.

[0047] In step S8, the control device 20 acquires, via the destination information acquisition unit 208, destination information indicating the destination set for the IVI system to provide "route guidance," and then proceeds to step S9.

[0048] In step S9, the control device 20 determines whether or not the vehicle is approaching the destination. If, for example, the remaining time until the scheduled arrival time is less than 30 minutes based on the location information of the vehicle 100 acquired by the positioning sensor 122 and the destination information, the control device 20 makes a positive determination in step S9 and proceeds to step S10. If the remaining time until the scheduled arrival time is 30 minutes or more, the control device 20 makes a negative determination in step S9 and returns to step S5. When returning to step S5, the control device 20 repeats the above-mentioned process. That is, the air conditioning temperature for each seating position is adjusted according to the fatigue levels of the occupants P1 and P2 to provide comfort to each of the occupants P1 and P2.

[0049] In step S10, the control device 20 instructs the air conditioning control unit 241 to adjust the air conditioner 80 to change the temperature from the second temperature to the first temperature for each seating position, and then proceeds to step S11. Note that if the fatigue level estimated by the occupant information acquisition unit 231 is less than a predetermined value, the air conditioning control unit 241 instructs the air conditioner 80 to adjust the temperature to maintain the first temperature for that seating position.

[0050] In step S11, the control device 20 determines whether or not to terminate the vehicle interior environment control process. If a predetermined termination operation has been performed, the control device 20 makes an affirmative determination in step S11 and proceeds to step S12, whereas if no termination operation has been performed, the control device 20 makes a negative determination in step S11 and returns to step S5. If returning to step S5, the control device 20 repeats the above-described process. That is, the control device 20 adjusts the air conditioning temperature for each seating position according to the fatigue levels of the occupants P1 and P2 to provide comfort to each of the occupants P1 and P2.

[0051] In step S12, the control device 20 performs termination processing to terminate the processing shown in Fig. 4. The termination processing includes, for example, termination of air conditioning temperature adjustment by the air conditioning control unit 241 and termination of wireless communication with the terminals 2A and 2B by the communication unit 209. Note that the wireless communication with the terminals 2A and 2B by the communication unit 209 does not need to be terminated if it is required for processing other than the vehicle interior environment control processing.

[0052] According to the embodiment described above, the following advantageous effects are achieved. (1) The vehicle interior environment control device 240 of the vehicle 100 includes an occupant information acquisition unit 231 that acquires fatigue level information indicating the fatigue level of the occupants P1 and P2 of the vehicle 100 based on the biometric information of the occupants P1 and P2, an air conditioning unit 80 that allows the occupants P1 and P2 to specify the air conditioning temperature in the vehicle interior as a first temperature, and an air conditioning control unit 241 that serves as a control unit that instructs the air conditioning unit 80 to change the air conditioning temperature from the first temperature to a second temperature lower than the first temperature when the fatigue level of the occupants P1 and P2 acquired by the occupant information acquisition unit 231 is equal to or higher than a predetermined value. With this configuration, it is possible to alleviate mental fatigue by soothing tired occupants P1 and P2 with the conditioned air temperature. For example, by lowering the conditioned air temperature so that the occupants P1 and P2 are enveloped in slightly cool air, it is possible to refresh the minds of occupants P1 and P2 and alleviate their fatigue.

[0053] (2) In the vehicle interior environment control device 240 described in (1) above, the air conditioning control unit 241 lowers the second temperature as the fatigue level of the occupants P1 and P2 increases. This configuration makes it possible to soothe the occupants P1 and P2 at an appropriate second temperature according to their fatigue levels, compared to when the same second temperature is continuously set regardless of the fatigue levels of the occupants P1 and P2.

[0054] (3) The vehicle interior environment control device 240 of (1) or (2) above further includes a destination information acquisition unit 208 that acquires destination information regarding the destination of the vehicle 100, and the air conditioning control unit 241 instructs the air conditioning device 80 to change the air conditioning temperature from the second temperature to the first temperature as the vehicle 100 approaches the destination. This configuration allows the temperature of the air surrounding the occupants P1 and P2 to be automatically returned to the first temperature specified by the occupants P1 and P2 in preparation for arrival at the destination, resulting in an easy-to-use vehicle interior environment control device 240.

[0055] (4) In the vehicle interior environment control device 240 described in (1) to (3) above, the occupant information acquisition unit 231 acquires fatigue level information for each occupant P1, P2, and the air conditioning control unit 241 instructs the air conditioning device 80 on the air conditioning temperature for each occupant P1, P2. With this configuration, it is possible to reduce the mental fatigue of each of the occupants P1 and P2 in accordance with their respective levels of fatigue.

[0056] The above embodiment can be modified in various ways, and modifications will be described below. (Variation 1) In the above embodiment, an example has been described in which four people including the driver are accommodated in the vehicle cabin, but the number of occupants is not limited to four, and may be six or ten.

[0057] (Variation 2) In the above-described embodiment and variant example 1, the cabin of a vehicle 100 as a moving body is given as an example of a vehicle compartment whose temperature and humidity are adjusted by the air conditioning unit 80, but any cabin of a moving body carrying multiple occupants may be treated in the same way as the above-described vehicle compartment.

[0058] The above description is merely an example, and the present invention is not limited to the above-described embodiment and modifications as long as the features of the present invention are not impaired. One or more of the above-described embodiment and modifications can be arbitrarily combined, and modifications can also be combined with each other. [Explanation of symbols]

[0059] 2A, 2B terminal, 11 input device, 11A, 11B operation detection unit, 12 vehicle sensor group, 13 in-vehicle camera, 20 control device, 21 personal information storage unit, 22 related information storage unit, 23 content storage unit, 24 biosensor group, 25, 209 communication unit, 50 output device, 51 display unit, 52 projection unit, 53A to 53D audio playback unit, 100 vehicle, 111A, 111B microphone, 121 vehicle speed sensor, 122 positioning sensor, 123 camera, 131 front seat camera, 132 rear seat camera, 208 destination information acquisition unit 208, 231 occupant information acquisition unit, 240 vehicle interior environment control device, 241 air conditioning control unit

Claims

1. an occupant information acquisition unit that acquires fatigue level information indicating a fatigue level of an occupant of a vehicle based on biological information of the occupant; an air conditioning device that allows the occupant to specify an air conditioning temperature in the vehicle cabin as a first temperature; a control unit that instructs the air conditioner to change the air conditioning temperature from the first temperature to a second temperature that is lower than the first temperature when the fatigue level of the occupant acquired by the occupant information acquisition unit is equal to or greater than a predetermined value; A vehicle interior environment control device comprising:

2. The vehicle interior environment control device according to claim 1, The control unit decreases the second temperature as the fatigue level of the occupant increases. A vehicle interior environment control device characterized by:

3. The vehicle interior environment control device according to claim 1, a destination information acquisition unit that acquires destination information related to a destination of the vehicle; the control unit instructs the air conditioner to change the air conditioning temperature from the second temperature to the first temperature as the vehicle approaches the destination. A vehicle interior environment control device characterized by:

4. The vehicle interior environment control device according to any one of claims 1 to 3, the occupant information acquisition unit acquires the fatigue level information for each occupant, The control unit instructs the air conditioning device on the air conditioning temperature for each occupant. A vehicle interior environment control device characterized by:

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