In-vehicle device and in-vehicle system

Abstract

To improve the degree of freedom in arranging various components in a vehicle.SOLUTION: An on-vehicle device that is installed in a vehicle, includes an electric component including a sensor, a power source module including a power reception antenna, and a power source circuit that converts power supply radio waves received by the power reception antenna to electric power, and a line member that electrically connects the electric component and the power source module, and that has flexibility.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to an in-vehicle device and an in-vehicle system. [Background technology]

[0002] For example, Patent Document 1 (JP 2019-97303 A) discloses a wireless power transmission system that has a wireless power transmitting device and one or more wireless power receiving devices installed in a vehicle. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-97303 Summary of the Invention [Problem to be solved by the invention]

[0004] In Patent Document 1, it is possible to wirelessly receive and supply power to various components inside a vehicle. However, Patent Document 1 does not disclose anything about the relationship between the layout of the various components inside the vehicle and the wireless power receiving device. Here, it is desirable to improve the degree of freedom in arranging the various components inside the vehicle.

[0005] The present disclosure has been made to solve the above-mentioned problems, and its purpose is to provide an in-vehicle device and an in-vehicle system that can improve the degree of freedom in arranging various components inside a vehicle. [Means for solving the problem]

[0006] The on-board device of the present disclosure is an on-board device mounted on a vehicle, and includes an electrical component including a sensor, a power receiving antenna, a power supply module including a power supply circuit that converts power supply radio waves received by the power receiving antenna into electricity and supplies it to the electrical component, and a flexible line member that electrically connects the electrical component and the power supply module.

[0007] The in-vehicle system of the present disclosure is mounted on a vehicle and includes an in-vehicle device, a power supply antenna provided on the ceiling of the vehicle and configured to transmit the power supply radio waves from the ceiling to an interior space of the vehicle, the in-vehicle device including an electrical component having a sensor, a power receiving antenna, and a power supply module including a power circuit that converts the power supply radio waves received by the power receiving antenna into electric power and supplies the electric power to the electrical component, and a flexible wiring member that electrically connects the electrical component and the power supply module.

[0008] The present disclosure may be realized as a semiconductor integrated circuit that realizes part or all of an in-vehicle device or an in-vehicle system. [Effects of the Invention]

[0009] According to the present disclosure, it is possible to improve the degree of freedom in arranging various components inside a vehicle. [Brief explanation of the drawings]

[0010] [Figure 1] FIG. 1 is a side view showing the configuration of a vehicle equipped with an in-vehicle system including an in-vehicle device according to an embodiment of the present disclosure. [Figure 2] FIG. 2 is a configuration diagram showing the configuration of a power supply module of an in-vehicle system according to an embodiment of the present disclosure. [Figure 3] FIG. 3 is a configuration diagram showing the configuration of an in-vehicle device according to an embodiment of the present disclosure. [Figure 4] FIG. 4 is a schematic diagram showing an in-vehicle device according to an embodiment of the present disclosure placed on a seat. DETAILED DESCRIPTION OF THE INVENTION

[0011] First, the contents of the embodiments of the present disclosure will be listed and described.

[0012] (1) An on-board device according to an embodiment of the present disclosure is an on-board device mounted on a vehicle, and includes: an electrical component including a sensor; a power supply module including a power receiving antenna; a power supply circuit that converts power supply radio waves received by the power receiving antenna into electricity and supplies the electricity to the electrical component; and a flexible wiring member that electrically connects the electrical component and the power supply module.

[0013] A vehicle may be equipped with electrical components such as a sensor for detecting odors inside the vehicle, a sensor for detecting the heart rate and body temperature of a user inside the vehicle, a car navigation system, and a television. Power is required to operate these electrical components. The power supply module receives power-supply radio waves via a power receiving antenna and converts the received power-supply radio waves into electrical power via a power supply circuit. The power supply module then outputs this power to the electrical components via a line member.

[0014] Although the electrical components and the power supply module are electrically connected via the line members, they are separate entities, which allows for greater freedom in arranging the electrical components within the vehicle. The power supply module can also be placed at a location where it is easy to receive radio waves for power supply, improving the degree of freedom in placement of electrical components. This allows the power receiving antenna to be placed at a location where it can receive radio waves for power supply, improving the degree of freedom in placement of electrical components. Furthermore, the use of flexible line members allows for greater freedom in the relative placement of the power supply module and electrical components. According to the above configuration, it is possible to improve the degree of freedom in arranging various parts inside the vehicle.

[0015] (2) Preferably, the electrical component detects an indicator including at least one of the user's physical condition and the atmosphere of the vehicle using the sensor, and the sensor is provided on a seat cover installed in the vehicle.

[0016] The sensor is provided on the seat cover, so it can detect indicators of the user's physical condition, such as the heart rate and body temperature of the user seated in the seat. The sensor can also detect indicators of the vehicle's atmosphere, such as temperature and humidity. Because the sensor is electrically connected to the power supply module via the wiring member, the sensor can be placed on the seat cover without being limited by the placement position of the power supply module.

[0017] (3) Preferably, the line member is an FPC (Flexible Printed Circuit).

[0018] This configuration allows for greater freedom in designing the circuit that connects the power supply module and the electrical components.

[0019] (4) Preferably, the power receiving antenna receives the power supply radio waves based on the power supplied from the vehicle.

[0020] The power receiving antenna receives radio waves for power supply based on power supplied from, for example, a battery of the vehicle, etc. Therefore, power supply and reception can be completed within the vehicle.

[0021] (5) An in-vehicle system according to an embodiment of the present disclosure includes an in-vehicle device and a power supply antenna provided on a ceiling of the vehicle and configured to transmit the power supply radio waves from the ceiling to an interior space of the vehicle. The in-vehicle device includes an electrical component having a sensor, a power receiving antenna, and a power supply module including a power circuit that converts the power supply radio waves received by the power receiving antenna into electric power and supplies the electric component with electric power, and a flexible wiring member that electrically connects the electrical component and the power supply module.

[0022] A vehicle may be equipped with electrical components such as a sensor for detecting odors inside the vehicle, a sensor for detecting the heart rate and body temperature of a user inside the vehicle, a car navigation system, and a television. Power is required to operate these electrical components. The power supply module receives power-supply radio waves via a power receiving antenna and converts the received power-supply radio waves into electrical power via a power supply circuit. The power supply module then outputs this power to the electrical components via a line member.

[0023] Although the electrical components and the power supply module are electrically connected via the line members, they are separate entities, which allows for greater freedom in arranging the electrical components within the vehicle. The power supply module can also be placed at a location where it is easy to receive radio waves for power supply, improving the degree of freedom in placement of electrical components. This allows the power receiving antenna to be placed at a location where it can receive radio waves for power supply, improving the degree of freedom in placement of electrical components. Furthermore, the use of flexible line members allows for greater freedom in the relative placement of the power supply module and electrical components. According to the above configuration, it is possible to improve the degree of freedom in arranging various components.

[0024] Furthermore, since the power supply antenna is mounted on the ceiling of the vehicle, the power supply radio waves from the power supply antenna are less likely to be blocked by furniture such as seats in the vehicle interior, which improves the reception quality of the power supply radio waves from the power supply antenna at the power receiving antenna of the power supply module.

[0025] (6) Preferably, the power supply antenna transmits the power supply radio wave based on the power supplied from the vehicle to the power receiving antenna.

[0026] The power supply antenna transmits radio waves for power supply based on power supplied from, for example, a battery of the vehicle, etc. Therefore, power supply and reception can be completed within the vehicle.

[0027] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In the drawings, identical or corresponding parts are designated by the same reference numerals, and their description will not be repeated. Furthermore, at least some of the embodiments described below may be combined in any manner.

[0028] FIG. 1 is a side view showing the configuration of a vehicle equipped with an in-vehicle system including an in-vehicle device according to an embodiment of the present disclosure. 1, an in-vehicle system 1 including an in-vehicle device 2 according to this embodiment is mounted on a vehicle 50. First, the configuration of the vehicle 50 on which the in-vehicle system 1 is mounted will be briefly described.

[0029] 1, vehicle 50 has, in a side view, a front section 55 and a rear section 57 sandwiching a ceiling 53. Front section 55 is provided with front wheels 51a, and rear section 57 is provided with rear wheels 51b. A battery 58 that stores the power necessary to drive vehicle 50 is stored inside front section 55.

[0030] An interior space 59 is formed between the front section 55 and the rear section 57 of the vehicle 50. An instrument panel module 70 is provided on the front section 55 side of the interior space 59. The instrument panel module 70 is configured as a unit containing a dashboard, air conditioning equipment, a car navigation system, a television, an audio unit, etc.

[0031] Furthermore, a plurality of seats 60 are arranged in a row in the interior space 59, with the front part 55 of the vehicle 50 positioned in front. The seats 60 include a seat portion 61, a backrest portion 63, and a headrest 65. The seat portion 61 is the portion on which the user's buttocks are positioned, and has a seat surface portion 61a consisting of a generally horizontal surface facing the ceiling 53. The backrest portion 63 is the portion that supports the user's back, and is attached to the rear of the seat portion 61 so as to rise toward the ceiling 53. The backrest portion 63 has a backrest surface portion 63a that comes into contact with the user's back, and a backrest ceiling surface portion 63b that faces the ceiling 53. The headrest 65 is the portion on which the user's head is positioned, and is attached so as to protrude from the backrest portion 63 toward the ceiling 53 from the backrest surface portion 63b.

[0032] The seat surface portion 61a, the backrest surface portion 63a and the backrest ceiling surface portion 63b correspond to the cover of the seat 60 of the present disclosure.

[0033] Although not shown, the vehicle 50 is also provided with doors that can be opened and closed for passengers to get in and out of the vehicle. In addition, a handle, a brake, and the like are provided in the interior space 59 adjacent to the instrument panel module 70.

[0034] [assignment] Sensors, which are electrical components, can be installed inside a vehicle. The sensors are powered by receiving a supply of electric power. To supply power to the sensors, for example, an electric wire can be drawn from the vehicle's battery, and the power can be supplied from the battery to the sensors via the electric wire. However, the electric wire from the battery to the sensors must be installed inside the vehicle interior. In this case, it is difficult to route the electric wire to the sensors installed in predetermined positions while avoiding structures such as seats inside the vehicle interior. Furthermore, as the number of sensors increases, multiple electric wires must be installed inside the vehicle interior, making the installation of the electric wires even more difficult.

[0035] Another method is to supply power to the sensor from a device that converts power-supply radio waves received by a power-receiving antenna into electric power. However, the placement of the power-receiving antenna may limit the placement of the sensor. Therefore, it is desirable to increase the degree of freedom in the placement of sensors, which are electrical components, within a vehicle. It is also desirable to increase the degree of freedom in the placement of power-receiving antennas.

[0036] In contrast, the in-vehicle system according to the embodiment of the present disclosure solves the above problem with the following configuration and operation.

[0037] 1, a vehicle 50 is provided with an in-vehicle system 1 capable of transmitting and receiving radio waves for power supply. The in-vehicle system 1 includes an in-vehicle device 2 and a power supply module 30.

[0038] The in-vehicle device 2 and the power supply module 30 will be described below. Fig. 2 is a configuration diagram showing the configuration of the power supply module. Fig. 3 is a configuration diagram showing the configuration of an in-vehicle device according to an embodiment of the present disclosure. Fig. 4 is a schematic diagram showing an appearance in which an in-vehicle device according to an embodiment of the present disclosure is placed on a seat.

[0039] 2, the power supply module 30 is a device capable of transmitting radio waves for power supply. The power supply module 30 includes a flat power transmission board 31 and a flat power supply antenna 33. The power transmission board 31 is an electronic board on which the power supply antenna 33 is mounted. The power supply antenna 33 is an antenna capable of transmitting radio waves for power supply, and is disposed on a surface portion 31a of the power transmission board 31.

[0040] 1 , the power supply module 30 is attached to the ceiling 53. Specifically, the power supply module 30 is attached so that the back surface 31b of the power transmission board 31 faces the ceiling 53. Therefore, the power supply antenna 33 disposed on the front surface 31a of the power transmission board 31 is disposed so as to face the interior space 59 of the vehicle.

[0041] The power supply module 30 is connected to a battery 58 via a battery wiring 58a and receives power from the battery 58. The power supply antenna 33 transmits the power received from the battery 58 to the vehicle interior 59 by power supply radio waves, such as microwaves. As described above, the power supply antenna 33 is disposed on the ceiling 53 so as to face the vehicle interior 59. Therefore, the power supply radio waves transmitted from the power supply antenna 33 are unlikely to be blocked by structures within the vehicle interior 59 and can be transmitted to any position within the vehicle interior 59. For example, the backrest 63 of the seat 60 is disposed in the vehicle interior 59 so as to rise in a direction generally perpendicular to the ceiling 53. Therefore, the transmission of the power supply radio waves from the ceiling 53 is unlikely to be blocked by the backrest 63.

[0042] 3, the in-vehicle device 2 is a device that can operate by receiving power supply from a power supply module 30. The in-vehicle device 2 includes a flat-plate sensor 10, a flat-plate power supply module 20, and a flexible line member 40 that connects the sensor 10 and the power supply module 20. The sensor 10 detects the physical condition of a user riding in a vehicle 50, such as the heart rate and body temperature of the user.

[0043] The power supply module 20 of the in-vehicle device 2 is a device that receives power supply radio waves from the power supply module 30 and converts them into electric power. The power supply module 20 includes a flat power receiving board 21, a flat power receiving antenna 23 that is scheduled to be placed in a position where it can receive the power supply radio waves, and a flat power supply circuit 25. The power receiving antenna 23 is an antenna that can receive the power supply radio waves and is placed on the front surface 21a of the power receiving board 21. The power supply circuit 25 is a circuit that converts the power supply radio waves into electric power and is placed on the back surface 21b of the power receiving board 21.

[0044] The power receiving antenna 23 receives the power supply radio waves transmitted from the power supply antenna 33 and outputs them to the power supply circuit 25. The power supply circuit 25 includes a capacitor and the like, and rectifies the power supply radio waves to convert them into electric power. The power supply circuit 25 outputs the rectified electric power to the sensor 10 via the line member 40. The power supply circuit 25 may output electric power to the sensor 10 constantly or intermittently.

[0045] Referring to FIG. 4, the sensor 10 of the in-vehicle device 2 is embedded inside the backrest portion 63 in the vicinity of the backrest surface portion 63a.

[0046] In this embodiment, the flat sensor 10 is arranged so that its surface is aligned with the backrest surface portion 63a. As a result, the back of a user seated in the seat 10 is close to the sensor 10 arranged near the backrest surface portion 63a. The sensor 10 is powered by receiving power from the power supply circuit 25 via the line member 40, and detects the user's heart rate, body temperature, and the like from the user's back. The sensor 10 can also receive voltage intermittently from the power supply circuit 25 at predetermined intervals, allowing it to detect the user's heart rate, body temperature, and the like at predetermined intervals.

[0047] The sensor 10 transmits the measurement results of the user's heart rate, body temperature, etc. acquired by the sensor 10 to various devices other than the power supply module 30. For example, the sensor 10 has a communication module that transmits the measurement results to a receiving device 71 provided in the instrument panel module 70 and a mobile terminal or the like brought into the vehicle 50 using wireless communication such as Bluetooth (registered trademark).

[0048] The backrest surface portion 63a corresponds to the cover of the seat 60 of the present disclosure. In this embodiment, the sensor 10 is disposed inside the backrest portion 63 near the rear side of the backrest surface portion 63a, and is disposed near the rear side of the cover of the seat 60 of the present disclosure.

[0049] 1, 3, and 4, the power supply module 20 of the in-vehicle device 2 is embedded along the backrest ceiling surface portion 63b of the seat back 63 so that the surface portion 21a having the power receiving antenna 23 faces the ceiling 53. In other words, the surface of the flat-plate-shaped power receiving antenna 23 serves as a receiving surface for the power supply radio waves, and this receiving surface faces the ceiling 53. The power supply antenna 33 of the power supply module 30 transmits the power supply radio waves from the ceiling 53 to the vehicle interior space 59. Therefore, the power receiving antenna 23 facing the ceiling 53 can efficiently receive the power supply radio waves from the power supply antenna 30.

[0050] The backrest ceiling surface portion 63b corresponds to the cover of the seat 60 of the present disclosure. In this embodiment, the receiving antenna 23 is disposed inside the backrest portion 63 near the rear side of the backrest ceiling surface portion 63b, and is disposed near the rear side of the cover of the seat 60 of the present disclosure.

[0051] The line member 40 of the on-board device 2 electrically connects the sensor 10 and the power supply module 20. The line member 40 outputs power from the power supply circuit 25 of the power supply module 20 to the sensor 10. The line member 40 is, for example, an FPC. The line member 40 may also be a coaxial cable.

[0052] The line member 40 connects the sensor 10 and the power supply module 20 according to the positions where the sensor 10 and the power supply module 20 are arranged. In this embodiment, referring to FIGS. 1 and 4, the line member 40 electrically connects the power supply module 20 embedded in the backrest portion 63 along the backrest ceiling surface portion 63b to the sensor 10 embedded in the backrest portion 63 along the backrest surface portion 63a. In the case of FIGS. 1 and 4, the line member 40 is embedded in the backrest portion 63 along the backrest surface portion 63a so as to connect the end of the power supply module 20 and the end of the sensor 10.

[0053] As described above, the sensor 10, the power supply module 20, and the line member 40 are embedded inside the backrest 63. This reduces the discomfort felt by the user when sitting in the seat 60 and touching the backrest 63.

[0054] According to the above configuration, the sensor 10 is provided on the backrest surface portion 63a of the seat 60 so as to easily measure the user's body temperature, etc. Meanwhile, the power supply module 20 is provided on the backrest ceiling surface portion 63 so as to easily receive power supply radio waves from the power supply module 30 provided on the ceiling 53. In other words, the receiving sensitivity of the power supply radio waves of the power receiving antenna 23 provided on the backrest ceiling surface portion 63b is higher than the receiving sensitivity when the power receiving antenna 23 is provided on the backrest surface portion 63a where the sensor 10 is provided.

[0055] The sensor 10 and the power supply module 20 are connected via a line member 40, and the sensor 10 can receive a supply of power from the power supply module 20 via the line member 40. Although the sensor 10 and the power supply module 20 are electrically connected via the line member 40 in this way, they are separate entities, which improves the degree of freedom in the placement of the sensor 10 within the vehicle 50. If the degree of freedom in the placement of the sensor 10 is high, the sensor 10 can be placed in a position that suits each user with a different physique, for example.

[0056] Furthermore, the power supply module 20 can also be placed at a position where it is easy to receive power via radio waves for power supply, thereby improving the degree of freedom in placement.

[0057] As described above, the degree of freedom in the relative placement of the power supply module and the electrical components can be improved, and therefore the power supply module 20 having the power receiving antenna 23 can be placed in a position where it is easy to receive radio waves for power supply, and the sensor 10 can be placed in a position where the sensitivity is high, such as a position close to the user.

[0058] [Variations] In the above description, the in-vehicle device 2 includes the sensor 10 as an electrical component that detects the heart rate and body temperature of a user in the vehicle 50. However, the in-vehicle device 2 may also include electrical components such as a sensor that detects the atmosphere inside the vehicle 50, such as odor, temperature, and humidity, a car navigation system, and a television.

[0059] In the above description, the sensor 10 and the power supply module 20 are disposed in the backrest 63 of the seat 60. The position of the sensor 10 and the power supply module 20 is not limited to the backrest 63 of the seat 60, but may be in the seat portion 61 or in the headrest 65. Furthermore, the position of the sensor 10 and the power supply module 20 is not limited to the seat 60, but may be anywhere in the vehicle interior space 59. For example, the sensor 10 and the power supply module 20 may be provided in the instrument panel module 70, the door, the handle, etc.

[0060] In the above description, the sensor 10 and the power supply module 20 are disposed in a manner that they are embedded inside the seat 60. However, the sensor 10 and the power supply module 20 may also be disposed so as to be exposed on the surface of the seat 60, such as the seat surface portion 61a and the backrest surface portion 63a. The seat surface portion 61a and the backrest surface portion 63a correspond to the cover of the seat 60 of the present disclosure. Therefore, the sensor 10 may be disposed on the front side of the cover of the seat 60 of the present disclosure.

[0061] In the above description, the flat sensor 10 and the flat power supply module 20 are arranged so that their planes are aligned with the surfaces of the seat 60, such as the backrest surface 63a and the backrest ceiling surface 63b. However, for example, the sensor 10 and the power supply module 20 may be arranged so that their planes intersect with the surfaces of the seat 60, such as the backrest surface 63a and the backrest ceiling surface 63b.

[0062] In the above description, the sensor 10 and the power supply module 20 are flat plate-shaped members. However, the shapes of the sensor 10 and the power supply module 20 are not limited to flat plate shapes, and may be box-shaped.

[0063] In the above, in the flat power supply module 20, the power receiving antenna 23 is arranged on the front surface 21a facing the ceiling 53, and the power supply circuit 25 is arranged on the opposite back surface 21b. In other words, the power receiving antenna 23 and the power supply circuit 25 are arranged on different surfaces. However, the power receiving antenna 23 and the power supply circuit 25 may also be arranged on the same surface.

[0064] In the above description, the power supply module 30 is provided on the ceiling 53. However, the power supply module 30 may be provided anywhere in the vehicle interior space 59, such as in the instrument panel module 70, the door, or the handle.

[0065] In the above, the sensor 10 has a communication module that wirelessly transmits the measurement results. However, the on-board device 2 may be configured such that the communication module is provided separately from the sensor 10 and further includes a flexible line member that electrically connects the sensor 10 and the communication module. The line member may be integrated with the line member 40 or may be separate. In this case, the communication module is preferably placed in a position where a certain level of communication quality with the destination of the measurement results can be ensured, such as the same position as the power supply module 20.

[0066] Incidentally, various components including various electrical components such as the sensor 10 can be mounted inside the vehicle 50. It is desirable to be able to improve the degree of freedom in arranging the various components inside the vehicle 50.

[0067] In contrast, the vehicle device 2 according to an embodiment of the present disclosure is an on-board device 2 mounted on a vehicle 50, and includes a power supply module 20 including electrical components including a sensor 10, a power receiving antenna 23, and a power supply circuit 25 that converts the power supply radio waves received by the power receiving antenna 23 into electricity and supplies it to the electrical components, and a flexible line member 40 that electrically connects the electrical components and the power supply module 20.

[0068] The vehicle 50 may be equipped with electrical components such as a sensor for detecting odors inside the vehicle 50, a sensor 10 for detecting the heart rate and body temperature of a user in the vehicle, a car navigation system, and a television. Power is required to operate these electrical components. In the power supply module 20, the power receiving antenna 23 receives radio waves for power supply, and the power supply circuit 25 converts the radio waves received by the power receiving antenna 23 into electrical power. The power supply module 20 then outputs this power to the electrical components via the line member 40.

[0069] Although the electrical components and the power supply module 20 are electrically connected via the line member 40, they are separate from each other, which allows for greater freedom in arranging the electrical components within the vehicle 50. Furthermore, the power supply module 20 can also be placed at a position where it is easy to receive radio waves for power supply, improving the degree of freedom in placement of the electrical component 10. This allows the power receiving antenna 23 to be placed at a position where it can receive radio waves for power supply, improving the degree of freedom in placement of the electrical component 10. Furthermore, the use of flexible line members 40 allows for greater freedom in the relative arrangement of power supply modules 20 and electrical components. According to the above configuration, the degree of freedom in arranging various parts inside the vehicle 50 can be improved.

[0070] The above-described embodiments should be considered to be illustrative in all respects and not restrictive. The scope of the present invention is defined by the claims, not by the above description, and is intended to include all modifications within the meaning and scope of the claims.

[0071] The above description includes the following additional features. [Appendix 1] An in-vehicle device mounted on a vehicle, an electrical component including a sensor; a power supply module including a power receiving antenna that is to be placed in a position where it can receive radio waves for power supply; and a power supply circuit that converts the radio waves for power supply received by the power receiving antenna into electric power and supplies the electric power to the electric component; a flexible line member that electrically connects the electrical component and the power supply module; The in-vehicle device, wherein the receiving sensitivity of the power receiving antenna to the power supply radio wave is higher than the receiving sensitivity when the power receiving antenna is disposed at the location where the sensor is disposed. [Explanation of symbols]

[0072] 1. In-vehicle systems 2 Onboard equipment 10 sensors 20 Power Supply Modules 21 Power receiving board 21a Surface part 21b Back part 23 Receiving antenna 25 Power circuit 30 Power Supply Module 31 Power transmission board 31a Surface part 31b Back part 33 Powered antenna 40 Railway components 50 vehicles 51a front wheel 51b rear wheel 53 Ceiling 55 Front 57 rear 58 Battery 58a Battery Wiring 59 Interior space 60 seats 61 Seat area 61a Seat surface 63 Backrest 63a Backrest surface 63b Backrest ceiling surface 65 Headrest 70 Instrument panel module 71 Receiving device

Claims

1. An in-vehicle device mounted on a vehicle, an electrical component including a sensor; a power supply module including a power receiving antenna that receives radio waves for power supply transmitted from a power supply antenna provided on the ceiling of the vehicle, and a power supply circuit that converts the radio waves for power supply received by the power receiving antenna into electric power and supplies the electric power to the electric component; a communication module that transmits the measurement results of the sensor via wireless communication; a first flexible line member that electrically connects the electrical component and the power supply module; a second flexible line member electrically connecting the sensor and the communication module; The in-vehicle device, wherein the power supply module and the communication module are provided in a portion of a backrest of a seat mounted in the vehicle, the portion facing the ceiling of the vehicle.

2. the electrical component detects an indicator including at least one of a user's physical condition and an atmosphere of the vehicle using the sensor; The in-vehicle device according to claim 1 , wherein the sensor is provided on a cover of a seat installed in the vehicle.

3. 3. The on-board device according to claim 1, wherein the first line member is a flexible printed circuit (FPC).

4. The in-vehicle device according to claim 1 , wherein the power receiving antenna receives the power supply radio waves based on power supplied from the vehicle.

5. An in-vehicle system mounted on a vehicle, an in-vehicle device; a power supply antenna provided on a ceiling of the vehicle and configured to transmit radio waves for power supply from the ceiling to an interior space of the vehicle; The in-vehicle device an electrical component having a sensor; a power supply module including a power receiving antenna and a power supply circuit that converts the power supply radio waves received by the power receiving antenna into electric power and supplies the electric power to the electric component; a communication module that transmits the measurement results of the sensor via wireless communication; a first flexible line member that electrically connects the electrical component and the power supply module; a second flexible line member electrically connecting the sensor and the communication module; The in-vehicle system, wherein the power supply module and the communication module are provided in a portion of a backrest of a seat mounted in the vehicle, the portion facing the ceiling of the vehicle.

6. The in-vehicle system according to claim 5 , wherein the power supply antenna transmits the power supply radio waves based on the power supplied from the vehicle to the power receiving antenna.

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