Seat system

Abstract

To provide a seat system which enables information on a user seated on a seat to be obtained by another user.SOLUTION: A seat system 1 includes: a seat body 5; at least one sensor 40 provided at the seat body; a control unit 46 which processes a signal from the sensor; and a first user interface 69 which communicates with the control unit and gives notice of information based on a signal from the control unit. The sensor may obtain information obtained from a seating person seated on the seat body. The seat system 1 includes a camera 51 which captures an image of the seating person seated on the seat body. The control unit may display the image captured by the camera on the first user interface.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present invention relates to a seating system. [Background technology]

[0002] 2. Description of the Related Art Conventionally, there is known a device that estimates the seating posture of a seated person by mounting a pressure sensor or the like on the seat of the seated person (Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 11-064131 Summary of the Invention [Problem to be solved by the invention]

[0004] There are various advantages to being able to share information about the seated person obtained by a sensor installed in the seat with other users. For example, if a game is configured using a sensor installed in the seat as an input device, other users can know the progress and results of the game, which can increase the commercial value of the game. In addition, if the seat is out of sight or in a remote location, other users can know the status of the seated person without visual inspection, which can be used for childcare, nursing care, monitoring, etc.

[0005] In view of the above background, an object of the present invention is to provide a seat system that allows other users to obtain information about a user seated in a seat. [Means for solving the problem]

[0006] In order to solve the above problems, one aspect of the present invention is a seat system (1) having a seat body (5), at least one sensor (40) provided on the seat body, a control device (46) that processes signals from the sensor, and a first user interface (69) that communicates with the control device and notifies information based on the signal from the control device.

[0007] According to this aspect, other users can obtain information about the user seated in the seat using the first user interface. If the seat is out of sight or in a remote location, other users can understand the state of the user seated in the seat without visual inspection, which can be used for childcare, nursing care, monitoring, etc.

[0008] In the above aspect, the sensor may acquire information from an occupant seated in the seat body. The biological information may include, for example, body temperature, pulse, sweat, odor, etc., and the sensor may include a temperature sensor, a pulse sensor, a humidity sensor, an odor sensor, etc.

[0009] According to this aspect, another user can obtain biometric information of the user seated in the seat.

[0010] In the above aspect, the seat may further include a camera (51) that captures an image of the occupant seated in the seat body, and the control device may cause the first user interface to display an image captured by the camera.

[0011] According to this aspect, another user can obtain image information of the user seated in the seat by using the first user interface.

[0012] In the above aspect, the camera may be provided on the upper part of the seat back (8) or on the headrest (9).

[0013] According to this aspect, the camera can be supported by utilizing the seat back or the headrest, and a separate stand for supporting the camera can be omitted.

[0014] In the above aspect, the control device may have an application processing unit (57) that executes an application based on a signal from the sensor, and an image generated by the application processing unit may be displayed on the first user interface.

[0015] According to this aspect, other users can use the first user interface to check the game screen of the game being played by the user seated on the seat body, which means that the other users can enjoy the game together with the user playing the game.

[0016] In the above aspect, the control device may be configured as a mobile terminal (49) that wirelessly communicates with the sensor, and the mobile terminal may have a second user interface (47) that displays the image.

[0017] According to this aspect, a user seated on the seat body can check the image through the second user interface of the mobile terminal. Also, the control device and the second user interface can be configured using a known mobile terminal such as a tablet PC or a smartphone.

[0018] In the above aspect, it is preferable that the first user interface accepts an input from a user, and the control device outputs to the second user interface based on the input from the first user interface.

[0019] According to this embodiment, a user other than the user playing the game can participate in the game by utilizing the input device.

[0020] In the above aspect, the control device may communicate with the first user interface via the Internet (59).

[0021] According to this aspect, a user who is in a remote location with respect to the seat body can obtain information about the user seated in the seat body.

[0022] In the above aspect, the seat system may be a seat system for a vehicle.

[0023] According to this aspect, the sensor can be used as a seating sensor for detecting whether or not a user is seated on the seat. Effect of the Invention

[0024] One aspect of the present invention is a seat system (1) comprising a seat body (5), at least one sensor (40) provided on the seat body, a control device (46) that processes signals from the sensor, and a first user interface (69) that communicates with the control device and notifies information based on signals from the control device.

[0025] According to this aspect, other users can obtain information about the user seated in the seat using the first user interface. If the seat is out of sight or in a remote location, other users can understand the state of the user seated in the seat without visual inspection, which can be used for childcare, nursing care, monitoring, etc.

[0026] In the above aspect, the sensor may acquire information from an occupant seated in the seat body. The biological information may include, for example, body temperature, pulse, sweat, odor, etc., and the sensor may include a temperature sensor, a pulse sensor, a humidity sensor, an odor sensor, etc.

[0027] According to this aspect, another user can obtain biometric information of the user seated in the seat.

[0028] In the above aspect, the seat may further include a camera (51) that captures an image of the occupant seated in the seat body, and the control device may cause the first user interface to display an image captured by the camera.

[0029] According to this aspect, another user can obtain image information of the user seated in the seat by using the first user interface.

[0030] In the above aspect, the camera may be provided on the upper part of the seat back (8) or on the headrest (9).

[0031] According to this aspect, the camera can be supported by utilizing the seat back or the headrest, and a separate stand for supporting the camera can be omitted.

[0032] In the above aspect, the control device may have an application processing unit (57) that executes an application based on a signal from the sensor, and an image generated by the application processing unit may be displayed on the first user interface.

[0033] According to this aspect, other users can use the first user interface to check the game screen of the game being played by the user seated on the seat body, which means that the other users can enjoy the game together with the user playing the game.

[0034] In the above aspect, the control device may be configured as a mobile terminal (49) that wirelessly communicates with the sensor, and the mobile terminal may have a second user interface (47) that displays the image.

[0035] According to this aspect, a user seated on the seat body can check the image through the second user interface of the mobile terminal. Also, the control device and the second user interface can be configured using a known mobile terminal such as a tablet PC or a smartphone.

[0036] In the above aspect, it is preferable that the first user interface accepts an input from a user, and the control device outputs to the second user interface based on the input from the first user interface.

[0037] According to this embodiment, a user other than the user playing the game can participate in the game by utilizing the input device.

[0038] In the above aspect, the control device may communicate with the first user interface via the Internet (59).

[0039] According to this aspect, a user who is in a remote location with respect to the seat body can obtain information about the user seated in the seat body.

[0040] In the above aspect, the seat system may be a seat system for a vehicle.

[0041] According to this aspect, the sensor can be used as a seating sensor for detecting whether or not a user is seated on the seat. [Brief description of the drawings]

[0042] [Figure 1] FIG. 1 is a perspective view of a vehicle interior equipped with a seat system according to a first embodiment; [Diagram 2] FIG. 3 is a perspective view of the seat body; [Diagram 3] Block diagram of a seat system according to a first embodiment. [Figure 4] A viewing screen displayed on the user interface of another mobile device, (A) only game images, (B) when there is one user playing the game, or (C) when there are multiple users playing the game. [Diagram 5] Block diagram of a seat system according to a second embodiment. [Figure 6] Block diagram of a seat system according to a third embodiment. [Figure 7]User information screen displayed on the user interface of another mobile device DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0043] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment in which a seat system according to the present invention is applied to a vehicle such as an automobile will be described with reference to the drawings.

[0044] (First embodiment) 1, the seat system 1 has at least one seat body 5 arranged on a floor 3 that defines the bottom of a vehicle interior 2. In this embodiment, the seat system 1 has multiple seat bodies 5. In the following description, the front-rear, left-right, and up-down directions are defined based on a user seated on the seat body 5.

[0045] The seat body 5 constitutes the left and right front seats, the left and right mid seats provided behind the front seats, and the left and right rear seats provided behind the mid seats. Each seat body 5 has a seat cushion 7 provided on the floor 3 of the passenger compartment 2, a seat back 8 connected to the rear of the seat cushion 7, and a headrest 9 provided on the upper side of the seat back 8.

[0046] As shown in Fig. 2, each of the seat cushions 7 has a seat cushion frame (not shown) forming a skeleton, a pad 12 supported by the seat cushion frame, and a skin material 13 covering the outer surface of the pad 12. Similarly, each of the seat backs 8 has a seat back frame (not shown) forming a skeleton, a pad 16 supported by the seat back frame, and a skin material 17 covering the outer surface of the pad 16. The seat back frame is rotatably attached at its lower end to the rear end of the seat cushion frame. The pads 12 and 16 are made of a flexible resin material such as urethane foam. The skin materials 13 and 17 are made of, for example, woven fabric, leather, or synthetic leather.

[0047] At least one sensor 40 is provided in the seat body 5. It is preferable that at least one sensor 40 is provided in the seat cushion 7 and at least one sensor 40 is provided in the seat back 8. The sensor 40 has a plurality of detection units 41, one first communication unit 42, one battery 43, and wiring 44 connecting the plurality of detection units 41, the first communication unit 42, and the battery 43. The first communication unit 42 may be configured by a microcomputer or the like. The battery 43 may be replaceable or rechargeable. The battery 43 may be charged by connecting a harness or by wireless charging. It is preferable that the plurality of detection units 41, the first communication unit 42, the battery 43, and the wiring 44 are arranged on a sheet material 45 having a common flexibility. The sheet material 45 may be, for example, a flexible printed circuit board. In this embodiment, one of the sensors 40 is provided between the upper surface of the pad 12 of the seat cushion 7 and the cover material 13, and the other is provided between the front surface of the pad 16 of the seat back 8 and the cover material 17.

[0048] The sensor 40 constitutes a load sensor, a pressure-sensitive switch, or a touch sensor that detects the load applied by the user seated on the seat main body 5 or contact with the user. The detection unit 41 of the sensor 40 may be, for example, a piezoelectric element, a membrane switch, or a capacitance sensor. The sensor 40 may also constitute a bioinformation sensor that detects the body temperature, pulse, sweating state, odor, and the like of the user seated on the seat main body 5. The bioinformation sensor includes a temperature sensor, a pulse sensor, a humidity sensor, an odor sensor, and the like. In this embodiment, the sensor 40 is a membrane switch that generates an on signal when a load equal to or greater than a predetermined value is received.

[0049] As shown in Fig. 3, the seat system 1 further includes a control device 46 that communicates with the sensor 40, a user interface 47 controlled by the control device 46, and a camera 51 that captures an image of an occupant seated in the seat body 5. The user interface 47 preferably has at least an output function for displaying an image, and an input function for receiving an input from a user. In this embodiment, the user interface 47 is a touch panel display that can display an image and input an input by a user's touch operation. The touch panel display may be, for example, a liquid crystal display or an organic electroluminescence display.

[0050] As shown in Figs. 1 and 3, the camera 51 may be a digital camera. The camera 51 communicates with the control device 46 by wired communication or wireless communication, and transmits captured image data to the control device 46. The camera 51 may be provided for each seat body 5, or a common camera 51 may be configured to capture images of users seated in a plurality of seat bodies 5. The camera 51 may be provided on a structure such as a roof 52 or a pillar 53 of the vehicle, or on the back surface of the seat body 5 located in front of the seat body 5 to be imaged. The camera 51 may also be provided on an upper portion of the seat back 8 or a headrest 9 of the seat body 5 to be imaged, and may capture an image of the side of the face of the user seated in the seat body 5.

[0051] In this embodiment, the control device 46 and the user interface 47 are integrally combined to form a mobile terminal 49. In other embodiments, the control device 46 and the user interface 47 may be disposed in the vehicle as devices independent of each other.

[0052] The control device 46 is an electronic control device including a CPU, a ROM, a RAM, a rewritable non-volatile memory, and the like. The control device 46 has a second communication unit 55 that wirelessly communicates with the first communication unit 42 of the sensor 40 and communicates with the sensor 40, a signal processing unit 56 that processes a signal from the sensor 40, an application processing unit 57 that executes an application based on a signal from the signal processing unit 56, an image creation unit 58, and a third communication unit 64 for wirelessly communicating with a base station to connect to the Internet 59. The server 61 may be a cloud server. The application processing unit 57 can execute various applications including games. The second control device 50 functions as a platform and holds various applications. The applications may be imported into the control device 46 via the Internet 59 or a storage medium. The applications include games and applications for operating the seat body 5 and the lighting and sound devices in the vehicle. In this embodiment, the application processing unit 57 executes a game application in which the sensor 40 is a controller. The server 61 connects the mobile terminal 49 to another mobile terminal 62, enabling online games.

[0053] The other mobile terminal 62 may be located inside the vehicle or in a remote location outside the vehicle. The other mobile terminal 62 may be a known tablet PC or smartphone, and has a user interface 69 capable of inputting and outputting with the control device 68. The control device 68 has a fourth communication unit 70 for wirelessly communicating with a base station to connect to the Internet 59. The other mobile terminal 62 communicates with the control device 46, and the user interface 69 notifies information based on a signal from the control device 46. The user interface 69 may be a touch panel display capable of inputting and outputting.

[0054] A navigation system 67 is provided on a dash panel 65 constituting the front part of the passenger compartment 2. The navigation system 67 has a control device 71 that executes car navigation processing based on GPS information and map information, and a user interface 72 that displays a car navigation screen generated by the control device 71. The control device 71 of the navigation system 67 has a fifth communication unit 73 for communicating with the second communication unit 55 of the mobile terminal 49. The user interface 72 is preferably a touch panel display capable of input and output.

[0055] The first communication unit 42, the second communication unit 55, and the fifth communication unit 73 may communicate by a short-range wireless communication method such as Bluetooth (registered trademark). The third communication unit 64 and the fourth communication unit 70 may communicate with a base station device connected to the Internet 59 by wireless communication based on a mobile communication standard such as 4G or 5G.

[0056] The signal processing unit 56 converts the signal from the sensor 40 into a signal that can be processed by the application processing unit 57. When the application is started, the application processing unit 57 generates a game screen (image), controls the user interface 47 provided in the mobile terminal 49, and causes the user interface 47 to display the game screen. The application processing unit 57 also executes game processing based on the signal from the signal processing unit 56, and changes the game screen displayed on the user interface 47. The user interface 47 may be a touch panel display configured from a liquid crystal display or an organic EL display. The application processing unit 57 communicates with the server 61 through the third communication unit 64. The game application executed by the application processing unit 57 may be, for example, one in which a character in the game is moved based on the body movement of the user seated on the seat main body 5, and a game is played.

[0057] The viewing image creation unit 58 creates a viewing image 80 based on the image information from the camera 51 and the game screen. The viewing image 80 is an image displayed on the other mobile terminal 62 and the navigation system 67. The viewing image 80 includes at least one of a game image and a camera image. The viewing image 80 may be only a game image 80A as shown in FIG. 4(A), for example, or the game image 80A may be displayed on the left half of the image as shown in FIG. 3(B), and the camera image 80B may be displayed on the right half. The camera image includes a user playing the game. As shown in FIG. 3(C), when there are multiple users playing the game in the vehicle cabin 2, the right half may be divided according to the number of users playing the game, and camera images 80B, 80B capturing each user may be displayed.

[0058] The control device 46 transmits the viewed image 80 to a control device 71 of the navigation system 67, and the control device 71 causes the user interface 72 to display the viewed image 80. In addition, the control device 46 transmits the viewed image 80 to an external portable terminal 62, and the control device 68 of the portable terminal 62 causes the user interface of the portable terminal 62 to display the viewed image 80.

[0059] The user interface 69 of the other mobile terminal 62 may accept a message input by the user, and the control device 68 may transmit the input message to the mobile terminal 49. The application processing unit 57 of the mobile terminal 49 may display the received message on the game screen. This allows users having other mobile terminals 62 to also participate in the game as supporters.

[0060] Furthermore, the viewed image 80 may be stored in at least one of the control device 46, the server 61, and the control device 68. The control device 68 may select the stored viewed image 80 in response to an operation by another user, and display it on the user interface 69. The control device 68 may display an image selection screen showing a list of past viewed images 80 on the user interface 69, and allow the other user to select the viewed image 80 to be displayed. This allows the other user to check the past viewed images 80.

[0061] Furthermore, the server 61 may store the viewing images 80 transmitted from the multiple control devices 46. The control device 68 may then display on the user interface 69 a viewing image 80 selected from the viewing images 80 transmitted from the multiple control devices 46 in response to an operation by another user. The control device 68 may display on the user interface 69 an image selection screen showing a list of the viewing images 80 transmitted from the multiple control devices 46, and allow the other user to select the viewing image 80 to be displayed. This allows the other user to check the viewing images 80 generated by the multiple control devices 46.

[0062] According to the above-described embodiment, a video game can be provided to the user using the sensor 40 provided on the seat main body 5 as a game controller. The sensor 40 detects the body movement of the user seated on the seat main body 5, and executes the game in accordance with the body movement of the user. In other words, the seat system 1 provides a game that the user seated on the seat main body 5 can enjoy by moving his or her body.

[0063] In the seat system 1, other users can obtain information about the user seated in the seat body 5 by using the user interface 69 of the mobile terminal 62. When the seat is out of sight or the seat body 5 is in a remote location, the other users can grasp the state of the user seated in the seat body 5 without visual inspection, and can use the information for childcare, nursing care, monitoring, etc. For example, a user seated in the seat body 5, which is a mid-seat, can obtain information about the user seated in the seat body 5, which is a front seat, by using the user interface 69 of the mobile terminal 62. Also, a user who is far away from the vehicle can obtain information about the user seated in the seat body 5 in the vehicle.

[0064] In addition, since the viewing image 80 is also displayed on the user interface 72 of the navigation system 67, the user seated in the seat body 5, which is the front seat, can obtain the viewing image 80 using the user interface 72 of the navigation system 67.

[0065] Since the viewing image 80 includes a captured image of the user seated in the seat body 5, other users can check an image of the user playing the game. In addition, since the viewing image 80 also includes a game image, other users can check the user's game play status. For example, grandparents who are in a remote location away from the vehicle can check the behavior of their grandchild who is enjoying a game inside the vehicle.

[0066] In the seat system 1 according to the first embodiment, when the mobile terminal 62 is located relatively close to the mobile terminal 49, for example when inside a vehicle, the mobile terminal 62 may directly communicate wirelessly with the mobile terminal 49 via short-range communication without going through the Internet 59.

[0067] Second embodiment 5, the seat system 90 according to the second embodiment differs from the seat system 1 according to the first embodiment in that the control device 71 of the navigation system 67 has a second communication unit 55, a signal processing unit 56, an application processing unit 57, a viewing image creation unit 58, and a third communication unit 64. In the seat system 90, the mobile terminal 49 is an additional component and may be omitted.

[0068] According to the seat system 90 in the second embodiment, the navigation system 67 installed in the vehicle can be used to process the signals from the sensor 40 and execute game processing, and the mobile terminal 49 can be omitted.

[0069] Third embodiment 6, the seat system 100 according to the third embodiment differs from the seat system 1 according to the first embodiment in that it has a user information processing unit 101. In the seat system 100, the sensor 40 has a pressure sensor that detects pressure (load) applied by a user seated on the seat main body 5, a pulse sensor that acquires the pulse of the user seated on the seat main body 5, and a body temperature sensor that measures the body temperature of the user seated on the seat main body 5.

[0070] The user information processing unit 101 acquires user information including whether or not a user is seated on the seat main body 5, the pulse rate of the user seated on the seat main body 5, and the body temperature of the user seated on the seat main body 5, based on a signal from the sensor 40. Then, the control device 46 transmits the user information to another mobile terminal 62, and causes the user interface 69 to display a user information screen 105 including the user information. The user information screen 105 may be, for example, a screen shown in FIG. 7. Furthermore, the control device 46 may transmit the user information to the navigation system 67, and causes the user interface 72 to display the user information screen 105.

[0071] Furthermore, the user information may be stored in at least one of the control device 46, the server 61, and the control device 68. The control device 68 may select the stored user information in response to an operation by another user, generate a user information screen 105 based on the selected user information, and display the user information screen 105 on the user interface 69. The control device 68 may display a user information selection screen displaying a list of past user information on the user interface 69, and allow the other user to select the user information to be displayed. This allows the user to check the past user information.

[0072] The server 61 may store user information transmitted from the multiple control devices 46. The control device 68 may generate a user information screen 105 based on user information selected from the user information transmitted from the multiple control devices 46 in response to an operation by another user, and display the user information screen 105 on the user interface 69. The control device 68 may display a user information selection screen displaying a list of user information transmitted from the multiple control devices 46 on the user interface 69, and allow the other user to select user information to be displayed. This allows the other user to check the user information acquired by the multiple control devices 46.

[0073] With the seat system 100, a user with a mobile terminal 62 can determine whether or not a user is seated in the seat body 5, and if a user is seated, can obtain the user's biological information, including the pulse and body temperature. In the seat system 100, by incorporating a humidity sensor and an odor sensor in the sensor 40, the sweating state, odor, etc. of the user seated in the seat body 5 can also be obtained by other users in remote locations.

[0074] The seat system 100 is suitable for monitoring elderly people from a remote location when applied to chairs in the home. The seat system 100 can record whether an elderly person living in a remote location has used the seat body 5, and if so, can obtain information on his / her health condition, such as pulse rate and body temperature.

[0075] Although the description of the specific embodiment has been completed above, the present invention is not limited to the above embodiment and can be modified in a wide range of ways. In the above embodiment, an example in which the seat system is applied to a vehicle is described, but the seat system may be applied to seats for vehicles other than automobiles, or seats provided in buildings such as theaters and homes.

[0076] The signal processing unit 56 may determine that a child seat or a booster seat is installed on the seat main body 5 based on a signal from the sensor 40, and may set the output from the signal processing unit 56 to the application processing unit 57 to 0 when a child seat or a booster seat is installed. When the sensor 40 has a load sensor (pressure sensor), the signal processing unit 56 may detect whether or not a child seat or a booster seat is installed on the seat main body 5 based on the load distribution detected by the sensor 40. For example, when the load distribution detected by the sensor 40 matches a preset pattern, it may be determined that a child seat or a booster seat is installed on the seat cushion 7 of the seat main body 5.

[0077] Furthermore, the child seat or booster seat mounted on the seat body 5 may have a sensor capable of transmitting a signal to the control device 46 by wireless communication. The sensor of the child seat and booster seat may be the same as the sensor 40 applied to the seat body 5. When the signal processing unit 56 detects that the child seat or booster seat is placed on the seat body 5, it can output a signal from the sensor provided on the child seat or booster seat to the application processing unit 57 by setting the output based on the signal from the sensor 40 of the seat body 5 to 0. This allows a user seated in the child seat or booster seat to play the game. [Explanation of symbols]

[0078] 1, 90, 100: Sheet system 5: Seat body 7: Seat cushion 8: Seat back 9: Headrest 40: Sensor 46: Control device 47: User Interface 49: Mobile terminals 51: Camera 55: Second Communication Department 56: Signal processing section 57: Application processing unit 58: Appreciation Image Creation Department 59: Internet 61: Server 62: Mobile terminal 64: Third Communications Department 65: Dash panel 67: Navigation system 68: Control device 69: User Interface 70: 4th Communications Department 71: Control device 72: User Interface 73: 5th Communications Department 80: Viewing images 101: User information processing unit 105: User information screen

Claims

1. A seat system for a vehicle, comprising: A seat body provided in a vehicle and having at least one sensor; a first control device disposed in the vehicle and processing signals from the sensor; a first user interface that is disposed in the vehicle, communicates with the first control device, and notifies information based on a signal from the first control device; The first control device is A signal processing unit that processes a signal from the sensor; An application processing unit that executes various applications; The application processing unit includes: generating an image and displaying the generated image on the first user interface; changing the image generated based on the signal from the signal processing unit; The signal processing unit includes: converting a signal from the sensor into a signal that can be processed by the application processing unit and outputting the signal to the application processing unit; determining whether a child seat or a booster seat is installed in the seat body based on a signal from the sensor; A seat system that sets an output to the application processing unit to 0 when it is determined that the child seat or the booster seat is installed in the seat body.

2. The sensor has a load sensor, The signal processing unit, based on the load distribution detected by the load sensor, The seat system according to claim 1 , further comprising a detection unit configured to detect whether the child seat or the booster seat is placed on the seat body.

3. A mobile terminal disposed outside the vehicle, having a second user interface, and communicating with the first control device; The first control device has a user information processing unit that acquires user information including biometric information of a first user seated on the seat body based on a signal from the sensor, transmits the user information to the mobile terminal, and causes the second user interface to display a user information screen including the user information. The mobile terminal has a second control device, 3. The seat system according to claim 1, wherein the second control device, when the child seat or the booster seat is mounted on the seat body, causes the second user interface to display that the child seat or the booster seat is placed on the seat body.

4. A camera that communicates with the first control device by wired communication or wireless communication, captures an image of a first user seated in the seat body, and transmits the captured image data to the first control device; The first control device causes the first user interface to display an image captured by the camera; The seat body includes a seat cushion provided on a floor of a vehicle compartment, a seat back connected to a rear portion of the seat cushion; A headrest provided on an upper side of the seat back, The seat system according to claim 3 , wherein the camera is provided on an upper portion of the seat back or on the headrest.

5. A seat system described in any one of claims 1 to 4, wherein the first control device performs wireless communication with the sensor.

6. The first control device has an image creation unit, the application processing unit generates a game screen, executes game processing based on a signal from the sensor, and changes the game screen; the viewing image creation unit creates a viewing image including at least one of the image data from the camera and the game screen based on the image data from the camera and the game screen; The first control device transmits the viewing image to the mobile terminal; The seat system according to claim 4 , wherein the second control device of the mobile terminal causes the second user interface to display the viewing image.

7. The second user interface of the mobile terminal accepts input of a message; The second control device transmits the input message to the first control device; The seat system according to claim 6 , wherein the application processing unit of the first control device displays the received message on the game screen.

8. A seat system as described in claim 3, wherein the second control device communicates with the first control device via the Internet.

9. The seat body includes a seat cushion provided on a floor of a vehicle compartment, a seat back connected to a rear portion of the seat cushion; A headrest provided on an upper side of the seat back, Each of the seat cushion and the seat back includes a frame forming a skeleton thereof, a pad supported by the frame and a skin material covering an outer surface of the pad; 9. The seat system according to claim 1, wherein the frame of the seat back is rotatably attached at a lower end to a rear end of the frame of the seat cushion.

10. A seat system as described in any one of claims 1 to 9, wherein the first control device constitutes a control device of a navigation system of the vehicle.

Images