Vehicle seat

Abstract

To provide a vehicle seat that can suppress power consumption of a vehicle by an electric apparatus.SOLUTION: In a heater device 40, a seat heater pad 42 is arranged on a seat cushion 12 of a vehicle seat 10 and a back heater pad 44 is arranged on a seat back 14. Cables 48A, 42A, 44A connected to a battery 48, the seat heater pad 42, and the back heater pad 44, respectively, are connected to a changeover switch 54 of a switch box 46 and a receptacle 56 on which a mobile battery 50 is mounted is connected to the changeover switch. Accordingly, the seat heater pad 42 is operated by power of the mobile battery 50 by operating the changeover switch 54 from an internal power supply side to an external power supply side, and consumption of power of the battery 48 can be suppressed when the seat heater pad 42 is operated.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present invention relates to a vehicle seat. [Background technology]

[0002] Patent Document 1 discloses a detachable seat heater. This detachable seat heater has a heating element disposed between a first outer fabric and a second outer fabric in a vehicle seat, and is disposed in the seat cushion, the seat back, or straddling the seat cushion and the seat back, and is connected to the vehicle battery to heat the occupant seated in the seat.

[0003] Some vehicle seats have heaters pre-installed in the seat cushion or seat back, allowing the occupant to be heated using power supplied from the vehicle battery. Furthermore, some vehicle seats installed in vehicles are provided with electrically operated reclining mechanisms, slide mechanisms, lifter mechanisms, etc. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3209693 Summary of the Invention [Problem to be solved by the invention]

[0005] Generally, a vehicle battery is charged with power generated by the driving force of the engine and supplies power to various electrical devices installed in the vehicle. Therefore, when the engine is stopped, the battery consumes power, and the power stored in the battery is consumed. In a vehicle, a decrease in the battery charge level can cause problems in driving, so there is room for improvement in the use of power within the vehicle when the engine is stopped.

[0006] The present invention has been made in view of the above circumstances, and has an object to provide a vehicle seat that can reduce the power consumption of the vehicle. [Means for solving the problem]

[0007] In order to achieve the above-mentioned object, a vehicle seat of a first aspect of the present invention includes a seat body including a seat cushion that supports the buttocks and lower back of a seated occupant and a seat back that supports the back of the occupant seated on the seat cushion, an electrical device provided in the seat body and operable by receiving DC power from a vehicle power source, a connection portion provided in the seat body and capable of connecting to an external power source that can operate the electrical device, and a switching portion that switches the connection source of the electrical device between the vehicle power source and the external power source connected to the connection portion.

[0008] The vehicle seat of the first aspect is provided with a seat cushion that supports the buttocks and lower back of an occupant seated on the seat body, and a seat back that supports the back of the occupant seated on the seat cushion. The seat body is also provided with electrical devices that can be operated by receiving DC power from a vehicle power source.

[0009] The connection part is connectable to an external power source provided in the seat body and capable of operating the electrical devices, and the switching part switches the connection source of the electrical devices between the vehicle power source and the external power source connected to the connection part.

[0010] This allows the external power source to be connected to the connection section, and the switching section to switch the power source connection source for the electrical equipment to the external power source, thereby reducing the consumption of power from the vehicle's power source when the electrical equipment is used.

[0011] The vehicle seat of a second aspect is the vehicle seat of the first aspect, wherein the electrical device is a heater that heats an occupant seated in the seat body.

[0012] In the vehicle seat of the second aspect, the heater that warms the occupant seated in the seat body is an electric device, which makes it possible to reduce the consumption of the vehicle's power supply when heating the occupant.

[0013] A third aspect of the vehicle seat is the same as the second aspect, except that the heater is divided into multiple parts, and the switching unit is capable of connecting the vehicle's power source to each of the divided heaters, and is capable of connecting the external power source to some of the divided heaters.

[0014] In the vehicle seat of the third aspect, the heater is divided into multiple heaters, and the switching unit connects some of the divided heaters to the external power source, thereby reducing the power consumption of the heaters and extending the usage time of the external power source.

[0015] A fourth aspect of the vehicle seat is the second or third aspect, wherein the heater is disposed in the seat cushion.

[0016] In the vehicle seat of the fourth aspect, the heater is disposed in the seat cushion, thereby making it possible to heat the buttocks and lower back of an occupant seated in the seat main body.

[0017] A fifth aspect of the vehicle seat is the fourth aspect, wherein the heater is arranged in the seat cushion and the seat back, and the switching unit is capable of connecting the vehicle's power source to the heaters of the seat cushion and the seat back, and is capable of connecting the external power source to the heater of the seat cushion or the heater of the seat back.

[0018] In a fifth aspect of the vehicle seat, a heater is disposed in the seat cushion and the seat back, and a switching unit connects an external power source to the heater in the seat cushion or the heater in the seat back, thereby making it possible to heat the occupant while reducing power consumption of the external power source.

[0019] A sixth aspect of the vehicle seat is the fourth or fifth aspect, wherein the switching portion includes a changeover switch, and the connection portion and the changeover switch are installed on the rear surface of the seat back.

[0020] In the vehicle seat of the sixth aspect, the switching unit includes a switch, and the connection unit and the switch are installed on the back of the seat back, which makes it easy to connect an external power source and switch from the vehicle power source to the external power source from the rear side of the seat back (e.g., the rear seat) without interfering with the occupant seated in the seat main body.

[0021] The vehicle seat of a seventh aspect is the sixth aspect, wherein a storage section that opens upward is provided on the rear surface of the seatback.

[0022] In the vehicle seat of the seventh aspect, a storage compartment that opens upward is provided on the rear surface of the seat back, so that an external power supply can be stored in the storage compartment.

[0023] An eighth aspect of the vehicle seat is the seventh aspect, wherein the connection portion is provided with a connection wire having a connector at the tip that is connected to the external power source, and the connection wire is capable of being pulled out from the rear side of the seat back and stored in the storage portion.

[0024] In the vehicle seat of the eighth aspect, the connection portion includes a connection line having a connector at its tip that is connected to an external power source, and the connection line is pulled out from the rear side of the seat back and can be stored in the storage portion, thereby allowing the external power source to be stored in the storage portion. [Effects of the Invention]

[0025] According to the present invention, electrical equipment provided in the seat main body and operated by the vehicle's power supply can be operated without using the vehicle's power supply, thereby having the effect of reducing the power consumption of the vehicle's power supply when operating the electrical equipment. [Brief explanation of the drawings]

[0026] [Figure 1] 1 is a perspective view showing a vehicle seat according to an embodiment of the present invention; [Figure 2] 1 is a perspective view showing an outline of a main part of a vehicle seat; [Figure 3] 1 is a single-line diagram showing a schematic configuration of a heater device according to an embodiment of the present invention. [Figure 4] FIG. 2 is a rear view of an example of a seat back as seen from the rear of the vehicle. [Figure 5] FIG. 10 is a rear view of another example of a seat back as seen from the rear of the vehicle. DETAILED DESCRIPTION OF THE INVENTION

[0027] Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. 1 shows a perspective view of a vehicle seat 10 according to this embodiment. In the drawing, the front side of the vehicle seat 10 is indicated by an arrow FR, the right side by an arrow HR, and the upper side by an arrow UP. In the following description, the terms "front / rear," "up / down," and "left / right" refer to the front / rear, top / bottom, and left / right of the vehicle seat 10 unless otherwise specified.

[0028] The vehicle seat 10 according to this embodiment is installed in a vehicle as a driver's seat where a driver (passenger) sits, with the front side facing the front of the vehicle and the right side facing the right side in the vehicle width direction. The vehicle seat 10 is installed in various vehicles and used for seating passengers, and may be used not only as a driver's seat but also as a passenger seat in the front seat of the vehicle. The vehicle seat of the present invention is not limited to a front seat and can also be applied to other seats such as a rear seat of the vehicle.

[0029] 1, a vehicle seat 10 includes a seat cushion 12 for supporting the buttocks, thighs, etc. of a seated occupant (not shown), a seat back 14 for supporting the back of the occupant, and a headrest 16. In this embodiment, the seat cushion 12 and the seat back 14 form a seat main body, which may include the headrest 16.

[0030] The seat back 14 has a back pad 20, which is a pad supported by a back frame (not shown), which is a skeleton member, and is covered by a back skin 22. The back skin 22 is formed into a bag shape by sewing together a plurality of pieces of fabric made of, for example, cloth, leather, synthetic leather, PVC, etc., and the back pad 20 is housed inside the bag-shaped back skin 22. The headrest 16 is attached to the upper end of the seat back 14 and supports the head of an occupant seated on the seat cushion 12.

[0031] The seat cushion 12 includes a cushion pad 24 as a pad supported by a seat frame (not shown) which is a framework member, and the cushion pad 24 is covered with a seat cover 26. Similar to the back cover 22, the seat cover 26 is made of a plurality of pieces of fabric made of, for example, cloth, leather, synthetic leather, PVC, etc., and the plurality of pieces of fabric are sewn together to form a bag shape so as to ensure breathability.

[0032] The cushion pad 24 has its upper and outer periphery housed inside the bag-shaped interior of the seat upholstery 26 and is covered by the seat upholstery 26. The cushion pad 24 is formed with a pad main body 30 and left and right side portions (side support portions) 32 of the pad main body 30. The left and right side portions 32 bulge out above the pad main body 30 on both the left and right sides of the pad main body 30, and the side portions 32 are shaped to ensure side support for the buttocks and thighs of an occupant seated on the pad main body 30.

[0033] Materials known in the art for vehicle seats can be used for the back pad 20 and the cushion pad 24 (the pad main body 30 and the side portions 32). The cushion pad 24 is made of a foam such as polyurethane foam (soft polyurethane foam) and is configured to provide the required seating comfort.

[0034] The seat cushion 12 has a pair of left and right side frames 34 that form a seat frame. The rear ends of the side frames 34 are connected to the lower end of the back frame of the seat back 14 via a reclining mechanism (not shown). The reclining mechanism allows the seat back 14 to tilt in the front-rear direction relative to the seat cushion 12.

[0035] The seat cushion 12 also has left and right slide rails 36 and a lifter mechanism (not shown) disposed below the side frames 34. The left and right slide rails 36 are fixed to the vehicle compartment floor with their longitudinal directions aligned in the vehicle front-to-rear direction. The left and right side frames 34 are movably engaged with the left and right slide rails 36. This allows the seat cushion 12 and the seat back 14 of the vehicle seat 10 to move together in the vehicle front-to-rear direction via a seat slide mechanism (not shown). The lifter mechanism connects the left and right side frames 34 and the left and right slide rails 36 via multiple link members, enabling the vertical position of the seat cushion 12 to be adjusted.

[0036] Meanwhile, a heater device 40 is installed as an electrical device in the vehicle seat 10. Fig. 2 shows a perspective view of the main parts of the heater device 40 as seen diagonally forward from the left, and Fig. 3 shows a circuit diagram (single-line diagram) of the schematic configuration of the heater device 40.

[0037] 1 to 3, the heater device 40 includes a seat heater pad 42, a back heater pad 44, and a switch box 46 as a switching unit. In the heater device 40, the heater pad as a heater is divided into the seat heater pad 42 and the back heater pad 44, and the seat heater pad 42 and the back heater pad 44 are each thin sheet-shaped.

[0038] The seat heater pad 42 is disposed on the upper surface of the pad main body 30 of the cushion pad 24 in the seat cushion 12, and is covered with the seat cover 26. The back heater pad 44 is disposed on the front side of the back pad 20 in the seat back 14, and is covered with the back cover 22.

[0039] The seat heater pad 42 and the back heater pad 44 generate heat when DC power of a predetermined voltage is applied to each of them. As a result, the heater device 40 heats the buttocks and lower back of the occupant seated in the vehicle seat 10 with the seat heater pad 42, and heats the occupant's back with the back heater pad 44. The seat heater pad 42 and the back heater pad 44 use hot wires or PCT (Positive Temperature Coefficient) elements (PCT heaters) or the like as heat generating means.

[0040] The heater device 40 can be operated by DC voltage (e.g., 12 V) power supplied from a battery (storage battery) 48 mounted on the vehicle as a power source. In the heater device 40, a heater switch (not shown) located on the vehicle's instrument panel, center console, or side of the seat cushion 12 is operated to supply DC power from the battery 48, thereby activating the seat heater pad 42 and the back heater pad 44.

[0041] The heater device 40 can be operated by DC power supplied from an external power source other than the battery 48. The heater device 40 uses a mobile battery 50, which can be used for mobile terminals such as smartphones and tablets, and portable game consoles, as an example of an external power source.

[0042] The mobile battery 50 outputs power with a direct current voltage of 5 V when connected using a USB (Universal Serial Bus) connector. The mobile battery 50 is provided with, for example, a Type-A male connector (plug) 52. The connector 52 is connected to one end of a cable 52A, and the other end of the cable 52A is connected to the mobile battery 50. Note that the mobile battery 50 may be compliant with, for example, the USB Power Delivery (USB PD) standard.

[0043] In the heater device 40, a switch box 46 is provided with a changeover switch 54 as a switching means and a receptacle 56 as a Type-A female connector as a connection portion.

[0044] 3, the changeover switch 54 is a dual switch in which switch sections 54A and 54B are interlocked. One end of a cable 42A, the other end of which is connected to the seat heater pad 42, is connected to the secondary side of the switch section 54A, and the seat heater pad 42 is connected to the switch section 54A. Also, one end of a cable 44A, the other end of which is connected to the back heater pad 44, is connected to the secondary side of the switch section 54B, and the back heater pad 44 is connected to the switch section 54B.

[0045] One end of a cable 48A, one end of which is connected to the battery 48 via a heater switch (not shown), is connected to one primary side terminal of the switch unit 54A and the other primary side terminal of the switch unit 54B. A receptacle 56 is connected to the other primary side terminal of the switch unit 54A, and the other primary side terminal of the switch unit 54B is open.

[0046] As a result, in the heater device 40, when the changeover switch 54 is set to one side (hereinafter referred to as the "internal power supply side"; see the solid line in FIG. 3), power from the battery 48 can be supplied to the seat heater pad 42 and the back heater pad 44. In addition, in the heater device 40, when the changeover switch 54 is set to the other side (hereinafter referred to as the "external power supply side"; see the dashed line in FIG. 3), the seat heater pad 42 is connected to the receptacle pull 56 and the back heater pad 44 is released. At this time, when the connector 52 of the mobile battery 50 is attached to the receptacle pull 56, the back heater pad 44 is in a stopped state and the seat heater pad 42 can be operated using power from the mobile battery 50.

[0047] As shown in Fig. 4, a seat back board (seat back panel) 58 is disposed on the rear surface of the seat back 14 of the vehicle seat 10, and the rear side of the seat back 14 is covered by the seat back board 58. A switch box 46 (see Fig. 2) is disposed on the upper inside of the seat back board 58, and an operation panel 60 of the switch box 46 is attached to the seat back board 58. Note that the headrest 16 is not shown in Fig. 4.

[0048] The operation panel 60 is provided with an operating section 54C of the selector switch 54 and a receptacle 56. A slide switch, a rocker switch, or a rotary switch can be used as the selector switch 54 (in this embodiment, a rocker switch is used as an example). This makes it possible to attach and detach the mobile battery 50 to and from the receptacle 56 and operate the selector switch 54 from the rear seat side of the heater device 40.

[0049] Furthermore, in the vehicle seat 10, a pocket 62 is formed in the seat back board 58 of the seat back 14. The pocket 62 is formed by sewing both the left and right sides and the bottom side to the seat back board 58, and the inside of the pocket 62 can be opened upward. This makes it possible to store the mobile battery 50 in the pocket 62 of the seat back 14 in the vehicle seat 10.

[0050] In the vehicle seat 10 configured as described above, the thighs and buttocks of a seated occupant are supported by the seat cushion 12, and the back of the occupant is supported by the seat back 14. In addition, a heater device 40 is installed in the vehicle seat 10.

[0051] In the heater device 40, when the selector switch 54 on the operation panel 60 is set to the "internal power supply side," power from the battery 48 can be supplied to each of the seat heater pad 42 and the back heater pad 44. When the heater switch is turned on in this state, power is supplied to each of the seat heater pad 42 and the back heater pad 44 in the heater device 40, and the seat heater pad 42 and the back heater pad 44 are operated by power from the vehicle battery 48.

[0052] In the heater device 40, the seat heater pad 42 and the back heater pad 44 are activated to heat the thighs, buttocks, and back of the occupant. As a result, even when the outside air temperature (temperature outside the vehicle) is low, the occupant seated in the vehicle seat 10 can ward off the cold by activating the heater device 40. Note that in the heater device 40, the seat heater pad 42 and the back heater pad 44 may be selectively activated by operating a heater switch.

[0053] Meanwhile, in the vehicle, a generator (dynamo) is driven by the driving force of the engine (not shown), enabling charging of the battery 48. Therefore, when the engine is stopped, the heater device 40 and the like are operated and consume power, reducing the charge level of the battery 48. However, if the heater device 40 is stopped to prevent the reduction in the charge level of the battery 48, the occupants will feel cold.

[0054] Here, the heater device 40 can be supplied with power from a mobile battery 50. In the vehicle seat 10, an operation panel 60 is arranged on a seat back board 58 of the seat back 14, and a pocket 62 is also arranged therein.

[0055] When power is supplied from the mobile battery 50 to the heater device 40, the mobile battery 50 with the connector 52 attached to the receptacle 56 arranged on the operation panel 60 is stored in the pocket 62. After this, the changeover switch 54 on the operation panel 60 is operated to the "external power supply side."

[0056] As a result, in the heater device 40, the seat heater pad 42 and the back heater pad 44 are disconnected from the battery 48, and the use of power from the battery 48 for heating the occupants is stopped.

[0057] In addition, in the heater device 40, when the selector switch 54 is operated to the "external power supply side," the mobile battery 50 attached to the receptacle 56 is connected to the seat heater pad 42, and the seat heater pad 42 is operated by the power of the mobile battery 50. In this way, the heater device 40 can heat the occupant seated in the vehicle seat 10 without consuming power from the vehicle battery 48.

[0058] Furthermore, in the heater device 40, the mobile battery 50 is stored in the pocket 62 provided in the seat back 14, so the mobile battery 50 does not get in the way of the passenger sitting in the vehicle seat 10 or the passenger sitting in the rear seat. Therefore, the passenger in the rear seat can move smoothly when sitting in the vehicle seat 10. Moreover, the mobile battery 50 is held stably by being stored in the pocket 62.

[0059] Furthermore, in the heater device 40, the back heater pad 44 is disconnected when the mobile battery 50 is used. This allows the heater device 40 to reduce power consumption compared to when the seat heater pad 42 and the back heater pad 44 are operated simultaneously, thereby extending the heating time using the mobile battery 50.

[0060] On the other hand, in this embodiment, the operation panel 60 on which the receptacle 56 is arranged is installed on the seat back board 58 of the seat back 14. However, the arrangement of the operation unit and the connection unit is not limited to this. Fig. 5 shows a rear view of another example of the seat back 14 as seen from the rear of the vehicle. Note that the headrest 16 is omitted from Fig. 5.

[0061] 5, a Type-A connector (male connector, plug) 52 may be used as the connection part instead of the receptacle 56. In this case, in the heater device 40, the changeover switch 54 is disposed on an operation panel 64 disposed on the seat back board 58 of the seat back 14, and the receptacle (female connector) 56 is provided on the mobile battery 50.

[0062] In addition, in the heater device 40, a cable 52A having a connector 52 connected to one end is connected to a switch portion 54A of a changeover switch 54, and is drawn out from between a seat back board 58 and an operation panel 64. In addition, the connector 52 side of the cable 52A can be stored in a pocket 62.

[0063] This allows the mobile battery 50 to be attached to the switch box 46 (switch section 54A) by connecting the connector 52 to the receptacle 56 inside the pocket 62, and the mobile battery 50 is held in a stable state without getting in the way of passengers sitting in the rear seats.

[0064] Furthermore, when the operation panel 60 on which the receptacle 56 is arranged is placed on the seat back board 58, the connector 52 attached to the receptacle 56 protrudes slightly toward the rear of the vehicle from the seat back board 58. In contrast, by providing the connector 52 on the cable 52A drawn out from the switch box 46, the connector 52 does not protrude rearward from the seat back 14, making it possible to attach the mobile battery 50 more effectively.

[0065] In the embodiment described above, a Type-A connector is used to connect the mobile battery 50. However, any type of connector that complies with the USB standard may be used to connect the mobile battery as an external power source.

[0066] In addition, in this embodiment, the heater is divided into a seat heater pad 42 and a back heater pad 44, and the mobile battery 50 is connected to the seat heater pad 42 so that only the seat heater pad 42 is operated by power from the mobile battery 50. However, only the back heater pad 44 may be operated by power from the mobile battery 50. Also, both the seat heater pad 42 and the back heater pad 44 may be operated by power from the mobile battery 50. This provides a comfortable feeling of warmth to the occupant.

[0067] In addition, the seat heater pad 42 may be divided into multiple areas, and power from the mobile battery 50 may be supplied to some of the divided areas. This may reduce the power consumption of the mobile battery 50 and enable heating of the occupants for a long period of time.

[0068] The heater device 40 may also be provided with a heating capacity switching function that switches the heating capacity between multiple levels. This not only makes it possible to obtain high heating capacity when heating is required in a short time or when the outside temperature is low, but also prevents overheating and allows for effective heating according to the passenger's wishes using power from an external power source.

[0069] Furthermore, in this embodiment, a mobile battery 50 is used as the external power source. However, the external power source may be any power source capable of outputting DC power at a predetermined voltage (for example, approximately 5 V to 12 V), and various portable power sources, generators, etc. may be used. In this case, it is preferable to use a connector other than the USB standard connector.

[0070] Furthermore, in this embodiment, the heater device 40 has been described as operating on the voltage (12 V) of the vehicle battery 48 as an internal power source. However, a voltage converter may be provided to convert the voltage of the vehicle battery 48 to, for example, 5 V that conforms to the USB standard, and the heater device 40 may be operated on the voltage converted by the voltage converter. This prevents the occupant from feeling that the heating capacity of the seat heater pad 42 or the like is reduced when a mobile battery 50 is used as an external power source, and allows for effective heating even when the mobile battery 50 is used.

[0071] Furthermore, in the heater device 40 according to this embodiment, the operation panel 60 (the changeover switch 54 and the receptacle 56) is disposed on the seat back board 58 of the seat back 14. However, the changeover unit and the connection unit may be disposed on the side of the vehicle seat 10 (the side of the seat cushion 12 or the side of the seat back 14). Furthermore, the changeover unit and the connection unit may be disposed on the instrument panel or center console of the vehicle together with the heater switch. Furthermore, if the vehicle seat is provided with an armrest, the changeover unit and the connection unit may be disposed on the armrest together with the heater switch.

[0072] Furthermore, in the above-described embodiment, the heater device 40 is used as the electrical device installed in the vehicle seat. However, if the reclining mechanism, lifter mechanism, and slide mechanism of the vehicle seat are equipped with actuators that are operated by power from the vehicle battery, the reclining mechanism, lifter mechanism, and slide mechanism may also be used as the electrical device.

[0073] This prevents the reclining mechanism, lifter mechanism, and slide mechanism of a vehicle seat from being unable to operate due to the inability to use power from the vehicle's battery, and allows the occupant's seating position to be changed even if the vehicle's battery runs out of power. [Explanation of symbols]

[0074] 10 Vehicle seats 12 Seat cushion (seat body) 14 Seat back (seat body) 40 Heating equipment (electrical equipment) 42 Seat heater pad (heater, electrical equipment) 44 Back Heater Pad (Heater) 46 Switch box (switching section, connection section) 48 Battery (Vehicle power supply) 50 Mobile battery (external power source) 52 Connector (connection part) 54 Changeover switch (changeover section) 56 Receptacle (connection part) 60 Operation Panel 62 pockets (storage area).

Claims

1. a seat body including a seat cushion that supports the buttocks and lower back of a seated occupant and a seat back that supports the back of the occupant seated on the seat cushion; an electrical device provided in the seat body and operable by receiving DC power from a vehicle power supply; a connection portion provided on the seat body and adapted to be connected to an external power source capable of operating the electrical device; a switching unit that switches a connection source of the electrical device between a power source of the vehicle and the external power source connected to the connection unit; 1. A vehicle seat including:

2. The vehicle seat according to claim 1, wherein the electrical device is a heater that heats an occupant seated in the seat body.

3. The heater is divided into a plurality of parts, 3. The vehicle seat according to claim 2, wherein the switching unit is capable of connecting a power source of the vehicle to each of the divided heaters and is capable of connecting the external power source to some of the divided heaters.

4. The vehicle seat according to claim 2 , wherein the heater is disposed in the seat cushion.

5. The heater is disposed in the seat cushion and the seat back, 5. The vehicle seat according to claim 4, wherein the switching unit is capable of connecting a power source of the vehicle to the heaters of the seat cushion and the seat back, and is capable of connecting the external power source to the heater of the seat cushion or the heater of the seat back.

6. the switching unit includes a changeover switch, The vehicle seat according to claim 4, wherein the connection portion and the changeover switch are provided on a rear surface of the seat back.

7. 7. The vehicle seat according to claim 6, wherein a storage section that opens upward is provided on the rear surface of the seatback.

8. the connection portion includes a connection line having a connector at a tip end connected to the external power source, 8. The vehicle seat according to claim 7, wherein the connecting wire is drawn out from the rear side of the seat back and is storable in the storage portion.

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