JP2016107724A - Vehicle seat device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle seat device capable of providing a stable potential therapeutic effect even at low outdoor temperature or the like.SOLUTION: A vehicle seat is provided with a shared line 31 which functions as an electrode line and a heater line and a counter electrode line 32 which is provided in contraposition to the shared line 31 while being apart therefrom. The vehicle seat is further provided with a step-up unit 52 which is voltage application means for applying a voltage between the shared line 31 which is the electrode line and the counter electrode line 32 and a rectifier unit 53. The vehicle seat is also provided with a heater control unit 51 which functions as current-carrying means for carrying a current to the shared line 31 which functions as the heater line. A switchover switch 54 alternately switches over between a first state of causing the shared line 31 to function as the electrode line and a second state of causing the shared line 31 to function as the heater line.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a vehicle seat device having a function of treating a potential of an occupant seated with an electrode for generating an electric field.

  As a prior art, for example, there is a vehicle seat device disclosed in Patent Document 1 below. The seat device includes a laying member attached to the seat. And a voltage is applied to the electrode in the laying tool, and an occupant seated on the seat is subjected to potential treatment.

JP 2002-355319 A

  However, in the above-described conventional vehicle seat device, for example, immediately after getting on the vehicle at a low outside air temperature, even if the potential treatment is performed by applying a voltage to the electrode, the occupant may hardly feel the treatment effect. There is a problem.

  The present invention has been made in view of the above points, and an object of the present invention is to provide a vehicle seat device capable of providing a stable potential treatment effect even at a low outside air temperature.

In order to achieve the above object, in the present invention,
A vehicle seat (10);
An electrode wire (31) provided on the vehicle seat;
A counter electrode member (32) provided on the vehicle seat so as to face the electrode wire while being spaced apart;
Voltage applying means (52, 53) for applying a voltage between the electrode wire and the counter electrode member;
A heating wire (31) provided on the vehicle seat and generating heat when energized;
And an energization means (51) for energizing the heating wire.

  According to this, it is possible to apply potential to the occupant seated on the vehicle seat by applying a voltage between the electrode wire and the counter electrode member by the voltage applying means. At the same time, it is possible to warm the occupant seated on the vehicle seat by energizing the heating wire with the energizing means. Therefore, even when the outside temperature is low, the potential treatment can be performed on the occupant while warming the occupant seated on the vehicle seat. In this way, a stable potential treatment effect can be provided even at a low outside air temperature.

  In addition, the code | symbol in the parenthesis attached | subjected to each said means is an example which shows a corresponding relationship with the specific means as described in embodiment mentioned later.

It is a perspective view showing the schematic structure of vehicular seat device 1 in the embodiment to which the present invention is applied, and shows a partial section. 1 is a cross-sectional view of a part of a vehicle seat device 1. FIG. 3 is a plan view of a wiring sheet 21 provided on the vehicle seat 10. 2 is a plan view of a wiring sheet 22 provided in the vehicle seat 10. FIG. 3 is a plan view of a wiring sheet 23 provided on the vehicle seat 10. FIG. 3 is a plan view of a wiring sheet 24 provided on the vehicle seat 10. FIG. 1 is a block diagram illustrating a schematic circuit configuration of a vehicle seat device 1. FIG. 4 is a model diagram showing voltage application between a common line 31 and a counter electrode line 32. FIG. 4 is a graph for explaining a voltage value applied between a common line 31 and a counter electrode line 32; 3 is a time chart showing an example of a switching pattern of energization to a common line 31 and voltage application between the common line 31 and the counter electrode line 32; It is a time chart which shows an example of the relationship between the voltage application pattern between the common line 31 and the counter electrode line 32, and a blood flow rate.

  A plurality of modes for carrying out the present invention will be described below with reference to the drawings. In each embodiment, parts corresponding to the matters described in the preceding embodiment may be denoted by the same reference numerals, and redundant description may be omitted. In the case where only a part of the configuration is described in each embodiment, the other parts of the configuration are the same as those described previously. In addition to the combination of parts specifically described in each embodiment, the embodiments may be partially combined as long as the combination is not particularly troublesome.

(First embodiment)
A first embodiment to which the present invention is applied will be described with reference to FIGS.

  The vehicle seat device 1 to which the present invention is applied is used as, for example, a seat device for a front seat of an automobile. The vehicle seat device 1 can be used for a driver seat or a passenger seat. The present invention can also be applied to a seat device for a rear seat of an automobile. The present invention is also applicable to a seat device for a seat of a vehicle other than an automobile.

  As shown in FIG. 1, the vehicle seat device 1 includes a vehicle seat 10 and wiring sheets 21, 22, 23, and 24 provided on the vehicle seat 10. Hereinafter, the vehicle seat 10 may be simply referred to as a seat 10.

  The seat 10 includes a seat cushion portion 11 and a seat back portion 12. The wiring sheets 21 and 22 are provided on the seat cushion portion 11. The wiring sheets 23 and 24 are provided on the seat back portion 12. Each of the seat cushion portion 11 and the seat back portion 12 includes a skin member 13 and a pad member 14. The skin member 13 is made of, for example, fabric, leather, leather with a nonwoven fabric stuck on the back side, or the like. The pad member 14 is made of, for example, a urethane foam resin, a urethane foam resin whose outer surface is covered with a nonwoven fabric, or the like.

  The wiring sheets 21 and 22 are interposed between the skin member 13 and the pad member 14 of the seat cushion portion 11. The wiring sheet 21 is interposed between the skin member 13 and the pad member 14 in the front portion of the seat cushion portion 11. The wiring sheet 21 is disposed at a position corresponding to the knee part of the thigh from the knee part of the occupant seated on the seat 10. The wiring sheet 22 is interposed between the skin member 13 and the pad member 14 in the rear portion of the seat cushion portion 11 relative to the position where the wiring sheet 21 is disposed. The wiring sheet 22 is disposed at a position corresponding to the buttocks from the buttocks side portion of the thigh of the occupant seated on the seat 10.

  The wiring sheets 23 and 24 are interposed between the skin member 13 and the pad member 14 of the seat back portion 12. The wiring sheet 23 is interposed between the skin member 13 and the pad member 14 in the lower part of the seat back portion 12. The wiring sheet 23 is disposed at a position corresponding to the waist of the occupant seated on the seat 10. The wiring sheet 24 is interposed between the skin member 13 and the pad member 14 in a portion above the position where the wiring sheet 23 is disposed in the seat back portion 12. The wiring sheet 24 is disposed at a position corresponding to the back to shoulder of the occupant seated on the seat 10.

  As illustrated in FIG. 2, the wiring sheet 21 includes a base sheet 30, a common line 31 and a counter electrode line 32 disposed on one side of the base sheet 30. The wiring sheet 21 is interposed between the skin member 13 and the pad member 14 such that the base sheet 30 is located on the pad member 14 side and the common line 31 and the counter electrode line 32 are located on the skin member 13 side. Yes. The wiring sheets 22 to 24 are the same as the wiring sheet 21. Each of the wiring sheets 21 to 24 can also be disposed inside the pad member 14. When the pad member 14 has a main pad and a placement pad disposed closer to the skin member 13 than the main pad, the wiring sheets 21 to 24 are interposed between the main pad and the placement pad. Is also possible.

  As shown in FIG. 3, the wiring sheet 21 includes a base sheet 30, a common line 31, a counter electrode line 32, a thermistor 33, and a high resistance body 36. The base sheet 30 is a polyurethane resin sheet, for example. The base sheet 30 has a trapezoidal shape whose width increases toward the front side. A common line 31 and a counter electrode line 32 are meandered on the base sheet 30. The common line 31 and the counter electrode line 32 are joined to the base sheet 30 by, for example, welding, adhesion, or the like and wired at predetermined positions.

  The common line 31 is arranged meandering with the outer peripheral edge of the base sheet 30 as a main wiring region. Although the details will be described later, the shared line 31 has a function as an electrode line and a function as a heating line. The counter electrode line 32 is arranged meandering with the central portion of the base sheet 30 as a main wiring area. The common line 31 and the counter electrode line 32 are separated from each other. The shared line 31 and the counter electrode line 32 are at least partly arranged along each other. The counter electrode line 32 is separated from the common line 31 that may function as an electrode line, and is opposed to the common line 31.

  The common line 31 corresponds to an electrode line in the present embodiment and also corresponds to a heating line. The common line 31 corresponds to the same wiring member used for the electrode line and the heating line. The electrode lines can be called potential electrode lines, and the heating lines can be called heater wires. The counter electrode line 32 corresponds to the counter electrode member in the present embodiment.

  The common line 31 has a conductive line made of, for example, a tin-containing copper alloy. As the conductive wire, a wire material obtained by performing tin plating on the outer peripheral surface of a tin-containing copper alloy wire can be used. For the conductive wire, for example, a wire having an outer diameter of 0.05 mm can be used. This conducting wire has a predetermined resistance value and functions as a heating element when energized. A coating layer made of an insulating material is disposed on the outer periphery of the conductive wire. The covering layer covering the conductive wire can have a two-layer structure of a fluororesin layer and a polyethylene terephthalate resin layer, for example. The shared wire 31 is a coated conductor wire having a finished outer diameter of 1.0 mm to 1.2 mm including an insulating coating layer, for example.

  As the counter electrode line 32, for example, a covered conductor line having the same configuration as the shared line 31 can be used. By using the common line 31 and the counter electrode line 32 as wiring members having the same configuration, the wiring sheet 21 can be easily manufactured. Moreover, the common wire 31 and the counter electrode wire 32 which have the same outer diameter are used, and the wiring density on the base sheet 30 of both lines is made substantially uniform, thereby suppressing the foreign object feeling when the occupant is seated on the seat 10. be able to.

  As illustrated in FIG. 2, the common line 31 and the counter electrode line 32 are both circular in cross-sectional shape of the conductor, but are not limited thereto. For example, the cross-sectional shape of the conductor may be oval or elliptical, or a rectangular conductor having a rectangular cross-sectional shape may be used. Further, the counter electrode line 32 may be a wiring member having a configuration different from that of the shared line 31.

  Both ends of the shared line 31 are electrically connected to the lead wire 39. A connector can be provided in the middle of the wiring path of the lead wire 39. The conductive line of the shared line 31 is connected to the end of the conductive line of the lead wire 39 by pressure bonding, soldering, welding, or the like, for example, in the vicinity of the rear side of the trapezoidal base sheet 30. One end of the counter electrode wire 32 is electrically connected to the lead wire 39. The conducting wire of the counter electrode 32 is connected to the end of the conducting wire of the lead wire 39 by pressure bonding, soldering, welding, or the like, for example, in the vicinity of the rear side of the trapezoidal base sheet 30. The other end of the counter electrode line 32 is connected to a high resistance body 36 having an electric resistance value higher than that of the counter electrode line 32. The high resistance body 36 may be an insulating cap that covers the end of the counter electrode line 32.

  The thermistor 33 is disposed, for example, in the vicinity of the rear side of the trapezoidal base sheet 30. The thermistor 33 is disposed adjacent to the shared line 31. The thermistor 33 is provided as a temperature detecting means when the shared line 31 functions as a heating line. The thermistor 33 is also connected to the lead wire 39.

  The connecting portion of the common wire 31 with the lead wire 39, the connecting portion of the counter electrode wire 32 with the lead wire 39, the connecting portion of the high resistance 36 of the counter electrode wire 32, and the disposing portion of the thermistor 33 are the same side of the base sheet 30. It is concentrated in the vicinity of the part. Each of the above portions is disposed in the vicinity of the side portion on the connector side when the lead wire 39 is provided with a connector. Thereby, the foreign object feeling by said each part at the time of a passenger | crew seating on the sheet | seat 10 can be suppressed.

  As shown in FIG. 4, the wiring sheet 22 includes a base sheet 30, a common line 31, a counter electrode line 32, a thermistor 33, and a high resistance body 36. The base sheet 30 of the wiring sheet 22 has a substantially rectangular shape with substantially the same width in the front-rear direction. The wiring sheet 22 has substantially the same configuration as the wiring sheet 21 except that the outer shape is different.

  As shown in FIG. 5, the wiring sheet 23 includes a base sheet 30, a common line 31, a counter electrode line 32, a thermistor 33, and a high resistance body 36. The base sheet 30 of the wiring sheet 23 has a substantially rectangular shape with substantially the same width in the front-rear direction. The wiring sheet 23 has substantially the same configuration as the wiring sheet 21 except that the outer shape is different.

  As shown in FIG. 6, the wiring sheet 24 includes a base sheet 30, a common line 31, a counter electrode line 32, a thermistor 33, and a high resistance body 36. The base sheet 30 of the wiring sheet 24 has a trapezoidal shape whose width increases toward the upper side. The wiring sheet 24 has substantially the same configuration as the wiring sheet 21 except that the outer shape is slightly different.

  In each of the wiring sheets 21 to 24, the base sheet 30 is attached to the pad member 14 by, for example, sewing, welding, adhesion, adhesion using a double-sided tape, or the like. Moreover, each wiring sheet 21-24 is arrange | positioned with respect to the skin member 13 by arrange | positioning the double-sided tape etc., for example in the area | region shown with the dashed-dotted line in each of FIGS.

  As shown in FIG. 7, the vehicle seat device 1 of the present embodiment includes a control unit 50, a heater control unit 51, a boosting unit 52, a rectifying unit 53, a changeover switch 54, an operation input unit 55, and the like. The control unit 50, the heater control unit 51, the boosting unit 52, the rectifying unit 53, and the changeover switch 54 are accommodated in, for example, a single casing and disposed below the seat cushion unit 11. Moreover, the operation input part 55 is provided in an instrument panel, a center console, the sheet | seat 10, etc., for example.

  The heater control unit 51 is an energization control unit that supplies electric power fed from a power supply unit 60 mounted on a vehicle to the shared line 31 and causes the shared line 31 to function as a heating line. The power supply unit 60 may be a 12V power supply or a 288V power supply. Between the power supply unit 60 and the changeover switch 54, a power supply circuit that boosts or lowers the power supply voltage may be provided.

  Further, a fuse 61 is interposed in the power supply path from the power supply unit 60 to the vehicle seat device 1. Thereby, when leakage etc. generate | occur | produce in the vehicle seat apparatus 1 and an excessive electric current flows into the electric power feeding path | route, the fuse 61 interrupts | blocks a power feeding path | route.

  The heater control unit 51 corresponds to energization means for energizing the heating wire in the present embodiment. The heater control unit 51 energizes the shared line 31 so that, for example, a heat generation output of 55 to 70 W is performed from the shared line 31. Temperature information from the thermistor 33 is input to the heater control unit 51. The heater control unit 51 prevents overheating by performing temperature feedback control when each wiring sheet functions as a heater using the temperature information. In addition, prevention of overheating when using the common line 31 as a heater line may be performed by a thermostat. A thermistor and a thermostat may be used in combination.

  The boosting unit 52 boosts the voltage of power supplied from the power supply unit 60. The rectifying unit 53 rectifies the current flowing through the shared line 31 with the electric power boosted by the boosting unit 52. The rectifying unit 53 includes a protection circuit including a high resistance body having an electric resistance value higher than that of the shared line 31, for example. The boosting unit 52 and the rectifying unit 53 apply a high voltage between the common line 31 and the counter electrode line 32 when each wiring sheet functions as a potential treatment device. The boosting unit 52 and the rectifying unit 53 correspond to a voltage applying unit that applies a voltage between the electrode line and the counter electrode member in the present embodiment.

  The protection circuit including the high resistance in the rectifying unit 53 has a leakage current value of 0 even when the sheet 10 is wet with a conductive liquid when the insulating coating of the shared line 31 is broken, for example. It is a protective device for setting the current to 5 mA or less.

  The voltage applying means applies a voltage of, for example, DC 900V between the common line 31 and the counter electrode line 32. In each wiring sheet, at the portion along which the common line 31 and the counter electrode line 32 are aligned, the distance between both lines is set to, for example, 2.0 to 2.5 mm. Thereby, the surrounding electric field strength can be made suitable for electric potential treatment.

  In each wiring sheet, for example, as schematically shown in FIG. 8, the common line 31 and the counter electrode line 32 can extend along the entire extending direction. The common line 31 and the counter electrode line 32 are preferably along each other over the entire region in the extending direction. The distance D between the shared line 31 and the counter electrode line 32 is set so that the strength of the electric field generated around the two lines by applying a voltage between the two lines becomes a suitable intensity. The electric field strength of the electric field generated around both lines forming a pair is preferably 350 kV or more as shown in the upper part of FIG. According to a study by Shimizu et al. Of Hokkaido Institute of Technology, it is reported that an electric field having an intensity of 350 kV or more is effective in increasing peripheral blood flow.

  In order to obtain a high electric field strength, it is preferable to apply a high voltage between the common line 31 and the counter electrode line 32, but the voltage is preferably 900 V or less. When the applied voltage is a high voltage exceeding 900 V, the occupant seated on the seat 10 is charged, and when the occupant touches the ground potential member of the vehicle, there is a case where the charged electrostatic discharge causes discomfort. As shown in the lower part of FIG. 9, discomfort due to discharge can be prevented by setting the applied voltage to 900 V or less.

  The applied voltage is preferably 600 to 900V. When the applied voltage is less than 600 V, the distance D needs to be extremely small in order to obtain an electric field strength of 350 kV or higher. Narrowing the interval D makes it difficult to manufacture each wiring sheet. Further, narrowing the interval D increases the rigidity of each wiring sheet, and gives a sense of foreign matter to the occupant seated on the seat 10. For this reason, it is preferable that an applied voltage is 600-900V, and if it is 850-900V, it is more preferable.

  In order to obtain a field strength of 350 kV or more by applying a voltage of 900 V between the shared line 31 and the counter electrode line 32, the interval D needs to be 2.5 mm or less. In the present embodiment, the distance D is set to 2.0 to 2.5 mm as a configuration that is relatively easy to manufacture and hardly gives a sense of foreign matter to the occupant.

  Note that it is preferable that a current of 0.8 to 5.0 mA flows between the common line 31 and the counter electrode line 32 as shown in FIG. If it is less than 0.8 mA, it is difficult for the occupant seated on the seat 10 to perceive energization, and it is difficult to obtain a sense of potential treatment. In addition, when the current is 10 mA or more, the occupant seated on the seat 10 may cause discomfort such as muscle spasm and may be uncomfortable. It is preferable that the occupant can perceive energization and that the current value is 0.8 to 5.0 mA in order to reliably prevent a failure due to energization. Here, the voltage applied between the common line 31 and the counter electrode line 32 may be an alternating current.

  The changeover switch 54 shown in FIG. 7 switches the state of each wiring sheet between the first state and the second state. The first state is a voltage application state in which the boosting unit 52 and the rectifying unit 53 that are voltage application means apply a voltage between the common line 31 and the counter electrode line 32. In the first state, each wiring sheet is caused to function as a potential treatment device. The second state is an energized state in which the heater control unit 51 that is an energizing unit energizes the shared line 31. In the second state, each wiring sheet is caused to function as a heater.

  The changeover switch 54 includes a switch 54A and a switch 54B that are linked to each other. The switch 54A switches between a state in which power from the power supply unit 60 is supplied to the heater control unit 51 side and a state in which power is supplied to the boosting unit 52 side. The switch 54B switches between the state where the end of the shared line 31 opposite to the power supply side is connected to the ground and the state where the end is floated from the ground.

  When the switch 54A supplies power from the power supply unit 60 to the heater control unit 51 side, the switch 54B connects the end of the shared line 31 to a ground potential member such as a metal part of the vehicle body, for example. The state is set. When the switch 54A supplies the power from the power supply unit 60 to the boosting unit 52 and the rectifying unit 53, the switch 54B floats the end of the shared line 31 from the ground potential, and the first state is set. The changeover switch 54 is a switching means for setting and switching between the first state and the second state.

  When the switch 54B is in a state where the end of the shared line 31 opposite to the power supply side is floated from the ground, the shared line 31 is connected to the high resistance 34 having a higher electric resistance value than the shared line 31. Is done. The high resistance body 34 corresponds to the high resistance member in the present embodiment. As a result, when the changeover switch 54 is set to the first state and the potential of the shared line 31 is floated from the ground, even if the occupant touches the end that floats from the ground, the shared switch 31 is shared. A large current can be prevented from flowing through the line 31.

  FIG. 7 shows an example in which the high resistance 34 is provided at the end of the shared line 31 opposite to the power supply side, but the shared line 31 also branches in the middle of the extending direction of the shared line 31. Thus, a high resistance body can be provided.

  Further, the counter electrode line 32 is connected, for example, at one end to the ground. A high resistance 35 having a higher electrical resistance value than the counter electrode 32 can be provided at this one end of the counter electrode 32. As a result, both the insulation coating of the common line 31 and the insulation coating of the counter electrode line 32 are broken, and even if there is a leakage between the common line 31 and the counter electrode line 32 to which a high voltage is applied, a large current Can be prevented from leaking.

  As described above, the counter electrode 32 is also provided with the high resistance 36 at the other end in the wiring sheet. Thereby, even if a passenger | crew may touch the other end part of this counter electrode line 32 by any chance when it is in a ground-fault state, it can suppress that a heavy current flows into the counter electrode line 32. FIG. As described above, the counter electrode line 32 is provided with the high resistance body at both ends, but the high resistance body can be provided so as to branch from the counter electrode line 32 even in the extending direction of the counter electrode line 32. Further, the high resistance body connected to the counter electrode line 32 can be eliminated. If the other end portion of the counter electrode 32 described above forms a good insulating state, a high resistance is not necessary.

  The control unit 50 controls the switching operation of the selector switch 54. The control unit 50 is a control unit in the present embodiment. The control unit 50 also controls the heater control unit 51, the boosting unit 52, and the rectifying unit 53. The control unit 50 is also an overall control unit that controls the overall operation of the potential treatment function unit and the heater function unit of the vehicle seat device 1.

  The control unit 50 switches the changeover switch 54 in accordance with various setting states by the operation of the user or the like in the operation input unit 55. The operation input unit 55 includes, for example, a potential switch for potential treatment and a heater switch for heater.

  For example, when both the potential switch and the heater switch are set to the on state in the operation input unit 55 by an occupant immediately after boarding at a low outside air temperature, the control unit 50 operates the changeover switch 54 to change to the first state. The second state is set alternately. The mode in which the first state is set to perform the potential treatment and the mode in which the second state is set to perform the thermal stimulation with the heater are alternately performed. As illustrated in FIG. 10, the setting of the first state for 30 seconds and the setting of the second state for 180 seconds are alternately performed.

  In the potential therapy mode in which the setting of the first state is performed intermittently, the peripheral blood flow increases due to the effect of the electric field, and a relief effect such as low back pain, stiff shoulders, and headache can be obtained. In particular, a great effect can be obtained when the electric field strength increases when switching from the second state to the first state. In the heater mode in which the setting of the second state is performed intermittently, the peripheral blood flow rate is further increased by the effect of the thermal stimulation, and the effect of alleviating fatigue, poor circulation, neuralgia, etc. is obtained.

  Thus, when the blood flow is increased by thermal stimulation due to the intermittent setting of the second state, the potential treatment is performed by the intermittent setting of the first state to further increase the blood flow, A good feeling of fatigue relaxation can be given to the occupant. In addition, each setting time which sets a 1st state and a 2nd state alternately is not limited to what was illustrated.

  Further, for example, when the potential switch is set to the on state and the heater switch is set to the off state in the operation input unit 55 by an occupant who has boarded at a time other than the low outside air temperature, the control unit 50 sets the changeover switch 54. To set the first state intermittently. Since the setting of the second state is prohibited by the heater switch, the setting of the second state is stopped.

  In the intermittent setting of the first state, the voltage application can be intermittently performed by, for example, the operation of the rectifying unit 53 while both the switches 54A and 54B are set to the first state side. Alternatively, both switches 54A and 54B can be changed alternately between the first state side position and the intermediate position.

  Accordingly, the first state is intermittently set and potential treatment is performed. As illustrated in the upper part of FIG. 11, the setting of the first state for 3 seconds and the cancellation of the setting of the first state for 1 second are performed alternately. In the potential therapy mode in which the setting of the first state is performed intermittently, the peripheral blood flow increases due to the effect of the electric field, and a relief effect such as low back pain, stiff shoulders, and headache can be obtained. In particular, a great effect can be obtained when the electric field strength is increased when the first state is set. As illustrated in the lower part of FIG. 11, each time the setting of the first state is repeated, the increase in blood flow is repeated when the electric field strength at the start of the setting is increased, and gradually saturates to a high blood flow state.

  Thus, when the outside air temperature is relatively high and the blood flow volume is large, the potential treatment is performed by intermittent setting of the first state to further increase the blood flow volume, thereby giving the passenger a good feeling of fatigue relaxation. Can do. Note that the setting time and the setting cancellation time in the first state are not limited to those illustrated. When the potential switch is set to the on state and the heater switch is set to the off state, the setting of the second state may be stopped and the first state may be set continuously.

  Further, for example, when the potential switch is set to the off state in the operation input unit 55 and the heater switch is set to the on state by an occupant immediately after getting on at the low outside temperature, the control unit 50 sets the changeover switch 54 to Operate and set continuously with the second state. A mode in which the second state is set and the thermal stimulation is performed by the heater is continuously performed.

  In the heater mode in which the setting of the second state is performed continuously, the peripheral blood flow volume increases due to the effect of thermal stimulation, and a relief effect such as fatigue, poor circulation, neuralgia, and the like can be obtained. As described above, by increasing the blood flow rate by thermal stimulation by continuously setting the second state, it is possible to give a good fatigue relaxation feeling to the occupant.

  According to the vehicle seat device 1 of the present embodiment, the following effects can be obtained.

  The vehicle seat device 1 includes a common line 31 functioning as an electrode line provided on the seat 10 and a counter electrode line 32 provided on the seat 10 so as to be opposed to the common line 31 as an electrode line. It is equipped with. Further, the vehicle seat device 1 includes a boosting unit 52 and a rectifying unit 53 that are voltage applying means for applying a voltage between the common line 31 that is an electrode line and the counter electrode line 32. The vehicle seat device 1 includes a common line 31 as a heating line that generates heat by energization provided in the seat 10, and a heater control unit 51 as a current-carrying means that energizes the common line 31 that is a heating line. .

  According to this, it is possible to apply a voltage between the common line 31 as the electrode line and the counter electrode line 32 by the voltage applying means, and to perform the potential treatment on the occupant seated on the seat 10. At the same time, the occupant seated on the seat 10 can be warmed by energizing the common line 31 as the heating line by the energizing means. Therefore, even when the outside temperature is low, the potential treatment can be performed on the occupant while warming the occupant seated on the seat 10. In this way, a stable potential treatment effect can be provided even at a low outside air temperature.

  In addition, the electrode wire and the heating wire are composed of a common line 31 that is the same wiring member. Then, switching as a switching means capable of setting switching between a first state in which the voltage applying means applies a voltage between the common line 31 and the counter electrode line 32 and a second state in which the energizing means energizes the common line 31. A switch 54 is provided.

  According to this, the common wire 31 which is the same wiring member can be used for the electrode wire and the heating wire for the heater when performing the potential treatment. Therefore, the number of wirings provided on the sheet 10 can be suppressed. Thereby, the structure of the vehicle seat apparatus 1 can be simplified relatively. In addition, the occupant's feeling of foreign objects seated on the seat 10 can be suppressed.

  In addition, when the first switch is set, the changeover switch 54 that is the switching means floats the potential of the common line 31 that is the same wiring member from the ground. According to this, when a switching means sets a 1st state and a high voltage is applied between the same wiring member and a counter electrode line, it can suppress that a large current flows into the same wiring member.

  Further, a high resistance member 34, which is a high resistance member, is connected to the same wiring member when the first state is set by the switching means. According to this, when the switching means sets the first state, even if a current leaks from the same wiring member, it is possible to prevent a large current from flowing through the path via the high resistance member.

  Moreover, the control part 50 as a control means which controls the switching operation of the changeover switch 54 which is a switching means is provided, and the control part 50 sets a switching means so that a 1st state and a 2nd state may be set alternately. Make it work. According to this, the same wiring member can be alternately used as an electrode wire and a heating wire for a heater when performing a potential treatment. Moreover, application of a high voltage between the same wiring member and the counter electrode line 32 can be performed intermittently. In the potential treatment by applying a high voltage, an increase in the blood flow of the occupant is promoted particularly at the timing when the voltage application is started. Therefore, if the high voltage application is intermittently performed, the increase in the blood flow of the occupant can be repeatedly promoted by repeatedly restarting the voltage application.

  In addition, when the setting of the second state is prohibited, the control unit 50 stops the setting of the second state and sets the first state intermittently. According to this, even when the heater function is not used, it is possible to intermittently apply a high voltage between the same wiring member and the counter electrode. Therefore, by intermittently applying the high voltage, it is possible to repeatedly restart the voltage application and promptly increase the blood flow of the occupant.

  The vehicle seat device 1 includes a fuse 61, a protection circuit including a high resistance body in the rectification unit 53, high resistance bodies 34, 35, 36, and the like. According to this, even if the insulation of the shared line 31 or the counter electrode line 32 is broken, it is possible to prevent electric leakage quickly and reliably.

(Other embodiments)
The preferred embodiments of the present invention have been described above, but the present invention is not limited to the above-described embodiments, and various modifications can be made without departing from the spirit of the present invention. The structure of the said embodiment is an illustration to the last, Comprising: The scope of the present invention is not limited to the range of these description. The scope of the present invention is indicated by the description of the scope of claims, and further includes meanings equivalent to the description of the scope of claims and all modifications within the scope.

  In the said embodiment, although the counter electrode wire 32 was used as a counter electrode member, it is not limited to this. For example, a flexible sheet-like electrode member may be employed as the counter electrode member. The sheet-like electrode member can be disposed, for example, on the opposite side of the base sheet 30 with the common line 31 in between.

  Moreover, in the said embodiment, although the four wiring sheets 21-24 were used, it is not limited to this. For example, one wiring sheet may be provided for each of the seat cushion portion and the seat back portion. Further, the wiring sheet may be provided only on one of the seat cushion portion and the seat back portion. For example, when it is a vehicle seat provided with a legrest part in a backseat etc., you may provide a wiring sheet in a legrest part.

  Moreover, in the said embodiment, when the 1st state in which the shared line 31 was used as an electrode line was set, it was the structure which connects the high resistance body 34 to the edge part of the shared line 31, but it is limited to this. It is not a thing. The high resistance member may not be provided.

  Moreover, in the said embodiment, although the shared line 31 and the counter electrode line 32 which is a counter electrode member were wired on the base sheet 30, it is not limited to this. For example, the common line and the counter electrode member may be directly wired to the back surface of the skin member constituting the sheet.

  Moreover, in the said embodiment, although the control part 50 controlled the switching operation of the changeover switch 54, it is not limited to this. For example, an occupant or the like may manually switch the changeover switch 54.

  In the above embodiment, the switch 54A and the switch 54B employ the change-over switch 54 that is interlocked by a mechanical mechanism or an electrical mechanism, and the control unit 50 controls the operation thereof. However, the present invention is not limited to this. is not. For example, the changeover switch is composed of two switches that are not connected by a mechanical mechanism or an electrical mechanism, and the control unit 50 controls both switches synchronously so that the two switches are interlocked. Also good.

  Moreover, in the said embodiment, although the electrode wire and the heat generating wire were used as the common line 31 which is the same wiring member, it is not limited to this. The electrode wire and the heating wire may be separate wiring members. In other words, the vehicle seat may be provided with a function unit that performs potential treatment and a function unit that performs thermal stimulation separately, so that a passenger seated on the seat can perform potential treatment and thermal stimulation at the same time.

  Even in such a configuration, it is preferable to intermittently apply the voltage from the voltage applying means between the electrode wire and the counter electrode member. According to this, it is possible to intermittently apply a high voltage between the electrode wire and the counter electrode member. As described in the above embodiment, by intermittently applying a high voltage, it is possible to repeatedly restart the voltage application and repeatedly promote an increase in the blood flow of the occupant.

DESCRIPTION OF SYMBOLS 1 Vehicle seat apparatus 10 Vehicle seat 31 Shared wire (electrode wire, heat generating wire, same wiring member)
32 Counter electrode (counter electrode member)
50 Control unit (control means)
51 Heater control unit (energizing means)
52 Booster unit (part of voltage application means)
53 Rectification unit (part of voltage application means)
54 changeover switch (switching means)

Claims (7)

A vehicle seat (10);
An electrode wire (31) provided on the vehicle seat;
A counter electrode member (32) provided on the vehicle seat so as to face the electrode wire while being spaced apart;
Voltage applying means (52, 53) for applying a voltage between the electrode wire and the counter electrode member;
A heating wire (31) provided on the vehicle seat and generating heat when energized;
A vehicle seat device comprising: an energization means (51) for energizing the heating wire. The electrode wire and the heating wire are made of the same wiring member,
Switching means capable of setting and switching between a first state in which the voltage applying means applies a voltage between the same wiring member and the counter electrode member and a second state in which the energizing means energizes the same wiring member. The vehicle seat device according to claim 1, further comprising (54).   3. The vehicle seat device according to claim 2, wherein when the first state is set, the switching unit floats the potential of the same wiring member from the ground. 4.   The high resistance member (34) having a higher electrical resistance value than the same wiring member is connected to the same wiring member when the first state is set by the switching means. Item 4. The vehicle seat device according to Item 3. Control means (50) for controlling the switching operation of the switching means,
5. The control unit according to claim 2, wherein the control unit operates the switching unit so that the first state and the second state are alternately set. 6. Vehicle seat device.   6. The control unit according to claim 5, wherein when the setting of the second state is prohibited, the control unit stops the setting of the second state and sets the first state intermittently. Vehicle seat device.   2. The vehicle seat device according to claim 1, wherein the voltage application from the voltage application means to the electrode wire and the counter electrode member is intermittently performed.

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