JP5586827B2 - Sheet - Google Patents

Description

  The present invention relates to a seat, and more particularly to a vehicle seat provided with an air cushion.

  Particularly in passenger cars, attempts have been made to improve riding comfort by embedding an air cushion in the seat. For example, it is considered that an airbag is embedded in the seat and the air pressure in the airbag is controlled by a control device. That is, the feeling or body pressure distribution of the person sitting on the seat is adjusted.

  Here, the body pressure distribution refers to the distribution of the contact pressure between the body and the seat when sitting on the seat. It is known that body pressure distribution is an important factor affecting the comfort and discomfort of the seat. Body pressure distribution was measured for many sheets, and it was confirmed that there was a clear correlation between the comfort and discomfort of the sheets and the body pressure distribution.

In a comfortable seat, pressure is applied to the cushion around the sciatic nodule, while in an uncomfortable seat, pressure on the thighs and both ends of the hips is high. In addition, the comfortable seat has a smaller pressure gradient of the body pressure between the central point of the pressure and the portion between the peripheral portions than the unpleasant seat, and draws a gentle curve like a contour line of a low mountain.
However, even in these seats, the feeling of the occupant in a long-time drive is not sufficiently improved, and accumulation of a feeling of fatigue due to sitting for a long time cannot be sufficiently prevented.

  In order to eliminate such problems, it is physiological for a long time by allowing each part of the body pressure distribution at the time of sitting to change by taking air in and out of a plurality of air bags arranged in the cushioning material. There has been proposed a vehicle seat that can maintain a sitting posture that does not cause fatigue accumulation, in particular, numbness of the hips, even when the vehicle is operated without changing its posture (see, for example, Patent Document 1).

JP-A-11-342776

The technique disclosed in Japanese Patent Application Laid-Open No. 11-342776 is intended to eliminate occupant's bottom numbness mainly by an air bag disposed in a seating region, and fatigue other than the butt portion felt by the occupant. Is not considered. For this reason, there is a disadvantage that the fatigue feeling accumulated in parts other than the hips such as the back cannot be reduced.
In addition, it is known that not only physical fatigue but also psychological fatigue (stress) is accumulated by sitting for a long time, but there is a disadvantage that stress reduction is not considered.

  In view of the above problems, an object of the present invention is to provide a seat capable of reducing the physical and psychological fatigue caused by sitting by realizing a comfortable seating feeling for a long time.

The object is achieved, according to the sheet according to claim 1, a seat for a vehicle formed by coating the skin to the cushion body, a plurality of fluid holding bag wherein arranged on the skin opposite side of said cushion body A pump coupled to the plurality of fluid holding bags via a tubular body, a control unit that controls driving of the pump, a plurality of detection units connected to the control unit, and a light emitting means. , at least one of the previous SL detector provided in each of the plurality of fluid holding bag, the controller, on the basis of the output signal from the detecting portion provided in each of said plurality of fluid holding bag Judging the physique of the seated occupant, controlling the drive of the pump, and taking in and out the fluid in the plurality of fluid holding bags, thereby forming a seat shape corresponding to the physique, and the light emitting means in accordance with the control of the pump Change the light emitted from , Before Symbol detector is a capacitive sensor formed in a ring shape, wherein provided in each of the plurality of fluid holding bag, the ring of the electrostatic capacitance sensor, the seating surface of said fluid holding bag It is solved by being mounted over the side surface.
As described above, the physique of the seated occupant is determined based on the output signal from the detection unit provided in each of the plurality of fluid holding bags, the fluid in the plurality of fluid holding bags is taken in and out, and the physique is determined. By adjusting the sheet shape and sheet hardness, a sheet having a pressure gradient with a suitable body pressure can be provided, and the sheet having a more suitable pressure gradient can be provided with improved measurement accuracy.

Further, the pump is controlled so that the fluid is discharged from the fluid holding bag on the bank surface for a certain time after the door lock is unlocked or for a certain time after the engine stop operation of the ignition key. You may make it low.
Further, the subject is a vehicle seat in which a cushion body is covered with a skin, a plurality of fluid holding bags disposed on the opposite side of the skin of the cushion body, and the plurality of fluid holding bags, A pump connected via a tubular body, a control unit that controls driving of the pump, and a plurality of detection units connected to the control unit, and at least one of the detection units is the plurality of the plurality of detection units Provided in each of the fluid holding bags, the control unit determines the physique of the seated occupant based on an output signal from the detection unit provided in each of the plurality of fluid holding bags, and drives the pump By controlling and taking in and out the fluids of the plurality of fluid holding bags, a seat shape corresponding to the physique is formed, and the fluid is discharged from the fluid holding bags on the hips, thighs and upper seat back during high speed running To make the pump The detection unit is a capacitance sensor formed in a ring shape, and is provided in each of the plurality of fluid holding bags, and the ring shape capacitance sensor is seated on the fluid holding bag. It is solved by being attached over the surface side surface.
Further, the control unit may control the pump in accordance with a signal from a collision sensor provided in the vehicle to vibrate the seating surface or change the seat shape .
Also, the control unit in response to information obtained from the car navigation system, may be to control the pump so as to out at least a portion of the fluid in the fluid holding bag.
The seat may include an audio system, and the control unit may control the pump according to sound information from the audio system to vibrate a seating surface or change the seat shape. .
Further, the control unit operates an accelerator, a brake, a handle, a gear or a parking brake, or turns on a headlight, vibrates a seating surface or changes the seat shape in conjunction with a direction indicator, ETC, or an inter-vehicle distance sensor. You may do it.

The seat of the present invention is provided with a plurality of fluid holding bags each having a detection unit attached to the seating surface of the seat back and the seat cushion. The seat shape is based on an output signal from the detection unit, etc. By adjusting the sheet hardness, it is possible to provide a sheet that has an effect of reducing physical and psychological fatigue.
In addition, air with temperature and humidity adjusted is led out from between the fluid holding bags to the seating surface side, or the temperature adjusted fluid is circulated through multiple fluid holding bags to suppress moisture over a long period of time. In addition, a sheet having an effect of reducing physical and psychological fatigue can be provided by maintaining a comfortable temperature.
Furthermore, it is possible to provide a seat having an effect of reducing psychological fatigue by providing light emitting means over a wide area of the seating surface and the back surface and adjusting the color tone and timing of light emission.

  Hereinafter, the present invention will be described with reference to the drawings. The members, arrangements, and the like described below do not limit the present invention, and various modifications can be made in accordance with the spirit of the present invention.

(First embodiment)
1 to 6 show an embodiment according to a first embodiment of the present invention, FIG. 1 is a schematic perspective view of a vehicle seat, FIG. 2 is a schematic sectional view taken along II of the vehicle seat, and FIG. FIG. 4 is a control flow diagram in which the color tone of the light emitting region L changes every time T1, FIG. 5 is a control flow diagram in which light in the light emitting region L moves, and FIG. It is a control flow figure which changes with information.

As shown in FIG. 1, the vehicle seat S according to the present embodiment includes a seat cushion S1, a seat back S2, and a headrest S3, and a part of the seating area of the seat cushion S1 and the seat back S2 is illuminated by light. A light emitting region L capable of changing the color tone is formed.
The light emitting region L is formed in each of the seat cushion S1 and the seat back S2 in the present embodiment, but has the same mechanism as each other. Therefore, in the following description, the seat cushion S1 will be described as an example for convenience.

FIG. 2 shows an outline of the II cross section of the seat cushion S1.
In the seat cushion S1 constituting the vehicle seat S, the structure of the light emitting region L at the center portion of the seating surface is different from that of the non-light emitting region such as the bank surface or the seating surface front side.
First, in a region where light is not emitted, a cushion pad 10 as a cushion body, a seat cushion frame 13 as a frame on which the cushion pad 10 is placed, and a seating surface side (sitting region) are covered to obtain a suitable appearance. A skin 16 is provided, and a side cover 15 is provided on the side surface of the seat cushion S1 to cover the side surface portion.

  In the light emitting region L, the translucent cushion pad 11 as the translucent cushion body and the seating surface side (sitting region) are covered to obtain a suitable appearance and transmit light from the light emitting means. And a planar LED (light emitting diode) unit U as a light emitting means. The LED unit U is placed on the seat cushion frame 13.

  Here, the seating area means the entire surface on which the passengers of the seat cushion S1 and the seat back S2 are seated. Similarly, the pressure receiving area is the area pressed by the occupant seating in the seat cushion S1, seat back S2, and headrest S3, the pressure receiving surface is the surface pressed by the occupant seating including the seating surface, and the butt area. The region of the seat cushion S <b> 1 and the back region that are pressed by the hips of the vehicle are the region of the seat back S <b> 2 that is pressed by the back of the occupant.

  The seat cushion frame 13 is formed of a rigid metal or a hard resin, and includes a pan frame (not shown) that supports the cushion pad 10 or the translucent cushion pad 11 from the bottom, and a leg portion that serves as a support base. Has been. An inner rail (not shown) can be attached to the leg portion, and the leg portion can be assembled into a slide type whose position can be adjusted back and forth from an outer rail installed on the vehicle body floor side.

The cushion pad 10 is a cushion body formed of an elastic soft foam resin such as a urethane foam material, and is not translucent. Therefore, the cushion pad 10 is disposed in a region where the vehicle seat S does not emit light.
The translucent cushion pad 11 is a cushion body composed of a sheet-like fiber structure disposed in the light emitting region L. It has translucency and cushion performance equivalent to the cushion pad 10 made of urethane foam. Moreover, the translucent cushion pad 11 comprised from this sheet-like fiber structure is formed with a thickness of about 20 to 40 mm. Even though the LED unit U is disposed in the seat cushion S1 due to the cushioning property of the translucent cushion pad 11, a good seating feeling can be realized.
The sheet-like fiber structure will be described later.

The skin 16 is formed by sewing a plurality of skin materials, and covers the seat cushion frame 13, the cushion pad 10, and the translucent cushion pad 11 to obtain a suitable appearance and design. In the embodiment, a translucent skin 16 a is used as the skin 16.
The translucent skin 16a is a skin used for a portion corresponding to the light emitting region L, and is made of a material that transmits visible light such as polyester.

  The LED unit U as the light emitting means of this embodiment constitutes a light emitting mechanism together with a control device (not shown) as the control means. The LED unit U is provided between the translucent cushion pad 11 and the seat cushion frame 13 as described above, and the control device is attached to the lower surface side of the seat cushion S1.

The arrangement and configuration of the LED unit U will be described.
FIG. 3 is a cross-sectional explanatory view of the light emitting region L of the seat cushion S1, and the light-transmitting skin 16a, the light-transmitting cushion pad 11, the LED unit U, and the seat cushion frame 13 are arranged in this order from the seating surface side. It is configured to be. In the seat cushion S1 in the present embodiment, the LED unit U is disposed at the bottom portion located in the central portion of the seating portion. However, the LED unit U is disposed on the entire seating portion including the side surface portion, and the entire seat seating surface. Alternatively, the light emitting region L may be formed. In this case, it is necessary that the cushion body and the skin disposed on the upper surface of the LED unit U have translucency. Of course, the light emitting region L can be arbitrarily formed also in the seat back S2.

  In addition, the translucent cushion pad 11 can also be comprised by replacing with other translucent materials which have cushioning properties other than said sheet-like fiber structure. As another translucent material, for example, a hollow air cushion formed from a transparent or translucent resin (translucent resin) such as polyester, polyamide synthetic fiber, acrylic, or PET (polyethylene terephthalate) can be considered. . When a hollow air cushion is made of a highly transparent resin, clearer light emission performance than that of the light-transmitting cushion pad 11 can be obtained.

  Further, the cushion body of the seat cushion S1 and the seat back S2 may be integrally formed with the light-transmitting cushion pad 11 without using the cushion pad 10, and conversely, the cushion pad is integrally formed and the upper portion of the LED unit U is formed. It is good also as a structure which arrange | positions a translucent cushion pad only.

Next, the configuration of the LED unit U will be described.
In the present embodiment, the LED unit U is divided into four parts, and two sets of the LED unit U are fixed to the seat cushion frame 13 and the seat back frame (not shown). It can also be set as a structure to be placed. In this case, the LED unit U itself can move to some extent as the cushion pad 10 is bent.

  In addition, by dividing the LED unit U into several blocks and arranging the plurality of blocks to form one LED unit U, each block is connected by a flexible material such as a cable, The LED unit U itself can have a certain degree of flexibility. In the case where the LED unit U is placed on the cushion body, the cushioning property can be improved. Moreover, the seating feeling can be further improved by configuring the shape of the LED unit U formed in a flat shape as a shape having irregularities matching the shape of the seating surface side of the vehicle seat S.

  The LED unit U as the light emitting means includes an LED module 3 as a light source in which a large number of light emitting elements (LED elements) as light emitters are arranged on a substrate, and a holding body that is a box on which the LED module 3 is placed. It is comprised from the case 4 and the transparent cover 5 as a protector which protects the LED module 3, and the light emission surface of the LED module 3 which arrange | positioned many LED elements is arrange | positioned toward the seating surface side.

The LED module 3 is configured by mounting a large number of LED elements as light emitting elements on a substrate, and has a longer life than a light source using a conventional light emitter by using an LED (light emitting diode) element. A light source unit (LED unit) having high brightness, light weight, and small size (thin wall) can be formed. Moreover, since it is configured by combining a plurality of types of LED elements having different emission colors, various emission colors can be expressed. In the present embodiment, a large number of LED elements having three kinds of light emission colors of R (red), G (green), and B (blue), which are the three primary colors of light, are alternately arranged on a substrate in order. 3 can be expressed in all colors.
In the present embodiment, a plurality of LED modules 3 are arranged side by side in the case 4, and a segment type LED or a shell type LED can be used as the LED element.

Of course, the LED module 3 may be composed of LED elements having emission colors other than the single color or the three primary colors (R, G, B), and express characters and patterns in addition to the emission and color development of the vehicle seat S. Is also possible.
Further, if the LED unit U is formed by further increasing the density of the LED elements attached to the LED module 3, a more precise image can be expressed and a video or the like can be displayed.

  In the present embodiment, an LED element is used as the light emitting element, but a light source composed of other light emitting elements such as EL (electroluminescence) or electroluminescent fiber may be used. Furthermore, it is good also as a structure which obtains a surface light source by scattering and equalizing the light from point light sources, such as an incandescent lamp and LED, using a light-scattering polymer light guide. Of course, the light scattering polymer light guide is inclined in the case, and light from an electroluminescent fiber, optical fiber, LED, EL, or small fluorescent lamp is irradiated from the side direction to make it thinner and lighter. A light emitting unit that replaces the LED unit U illustrated may be configured.

The transparent cover 5 is a member attached to the seating surface side of the LED module 3, and is formed from a transparent resin such as acrylic or polycarbonate. It is configured to have sufficient strength to withstand normal use such as seating of passengers.
The case 4 is a holding body on which the LED module 3 is placed, and is formed from an aluminum alloy because of its light weight. However, the case 4 may be a formed product such as resin or soft iron.

Next, the control device for the light emitting mechanism will be described.
The LED unit U is connected to the control device. The control device is provided with operation switches and control circuits for operating lighting, blinking, color development, etc., and is disposed on the lower surface of the seat cushion S1, and each LED unit provided on the seat cushion S1, the seat back S2, or the headrest S3. A branch cord connected to U is routed. Further, it is connected to a power source on the vehicle side through a control device.

The control device can be connected to the ignition key switch of the vehicle to control the lighting of the LED unit U according to the timing of the ignition, or by detecting the vehicle wireless key or door opening / closing signal.
Specifically, when a passenger with a wireless key approaches, the color tone of the light emitting area L gradually changes to blue, red, and yellow. Further, when the occupant switches on the ignition key, the vehicle seat S can be turned on, discolored, or blinked so that the light moves from the upper part to the lower part.

FIG. 4 shows a control flow diagram in the case where the color tone of the light emitting area L gradually changes to blue, red, and yellow as a passenger with a wireless key approaches.
First, when the radio wave from the wireless key is detected in step S1, the door is unlocked. At this time, the timer is turned on simultaneously (step S2: YES), and gradually R, G, B is passed every time T1 elapses. The emission color of the vehicle seat S is changed by a known control method for changing the color tone to blue, red, yellow, and blue again (step S3). Step S3 is continued until (30 seconds) elapses (step S4). In this embodiment, T1 is set to 0.1 seconds.

FIG. 5 shows a control flow diagram in the case where lighting is performed so that light moves from the upper part to the lower part of the vehicle seat S when the occupant switches on the ignition key.
When the operation of the ignition key is detected in step S1, the timer is turned on (step S2: YES), and the light emitting portion of the vehicle seat S is moved from the upper side to the lower side by a known control method that changes the light emitting location every time T2 elapses. When the LED is gradually changed (step S3) and is lit to the lowest position as the end condition, all the LEDs are turned off (step S4: YES). In this embodiment, T2 is set to 0.1 seconds.

Further, as a change in the color tone of the light emitting region L formed in the seating region, it is possible to detect the load state of the seating region of the seat and at least one of the temperature and humidity around the seat and control the light emitting means. it can.
Specifically, the pressure of the portion loaded by the occupant's seating is detected by a plurality of pressure sensors arranged on the translucent cushion pad 11, and corresponds to the place where the pressure sensors are arranged. The color tone of the LED element in the portion to be changed is changed according to the detected pressure value.
The pressure sensor can be replaced by film sensors 28 and 29 disposed on the air cell 22 described later.

  A control flow in this case is shown in FIG. In step S1, the pressure sensor load pressure value is read into the control device, and the pressure sensor mounting position information stored in advance in step S2 is referred to. Next, by using a known calculation method that expresses the color tone with the high pressure part being red and the low part being blue, and estimating the part where the pressure sensor is not attached from the detected values from the surrounding pressure sensors. The color tone of the seat is calculated (step S3), and is output to the LED module as the sheet color tone (step S4), so that the color tone is gradually changed according to the load state of the seating area.

  Further, when the temperature and humidity around the seat are detected and the color tone of the vehicle seat S is changed based on the detection results, a thermometer and a hygrometer attached to the lower side of the skin of the vehicle seat S are used. The temperature and humidity are detected, and the sensory temperature is calculated from these values, and the sensory temperature and the color tone of the vehicle seat S are linked. The control flow is the same as that shown in FIG.

  In addition to the above, optical sensors that measure the amount of light outside the car, car audio systems, car navigation systems, ETC, seating sensors (pressure sensors), mobile phones, vehicle speedometers, tachometers, turbo pressure gauges, inter-vehicle sensors, fuel gauges, etc. It may be linked to link lighting and color development. Of course, the occupant can directly select lighting or color development according to the climate or mood by using a switch attached to the control device.

Here, the sheet-like fiber structure used for the above-described translucent cushion pad 11 will be described below.
The sheet-like fiber structure includes a fixing point thermally fused in a state where the heat-adhesive composite short fibers intersect with each other, an inelastic crimped short fiber having a higher melting point than the heat-adhesive composite short fibers, and the heat-bonding Fixing points thermally fused in a state where the functional composite short fibers intersect with each other are scattered and distributed, and the number of short fibers arranged along the thickness direction per unit volume is A, When the number of short fibers arranged so as to be along the direction perpendicular to the thickness direction is B, the relationship of A ≧ 3B / 2 is satisfied.

  In addition, a plurality of sheet-like fiber structures are stacked in the thickness direction and compressed in a mold having a cavity with a predetermined shape and having a vapor hole formed on the mold surface. Thus, the cushion body can be formed by blowing steam at a pressure higher than atmospheric pressure.

  In particular, a sheet-like fiber structure in which the number of fibers along the thickness direction is 3/2 or more than the number of fibers along the direction perpendicular to the thickness direction is laminated in the thickness direction and molded. The cushion body is formed by high-pressure steam molding in the mold. Moreover, when it produces by laminating | stacking a polyester fiber as a sheet-like fiber structure, it can be set as the cushion body which has translucency. A translucent cushion pad 11 is constituted by this cushion body.

The sheet-like fiber structure preferably has a density distribution in the range of 0.015 to 0.20 g / cm ³ . Further, the heat-adhesive composite short fiber may have a melting point of 120 ° C. or higher.
Furthermore, the cushion body comprised from the sheet-like fiber structure can be formed in three-dimensional uneven | corrugated shape. In addition, since the length direction of the fiber is mainly directed to the load direction, the cushion body has an appropriate hardness with respect to the stress direction as well as air permeability and can easily disperse the stress. . Furthermore, it will be excellent in durability. Therefore, a comfortable seating feeling can be maintained for a long time when an occupant is seated.

  Further, even when sag occurs in the cushion body, it is higher than the glass transition point of the heat-adhesive composite short fiber and the inelastic crimped short fiber and lower than the melting point of the heat-adhesive composite short fiber. Sag can be restored by blowing steam at temperature.

In the present embodiment, the LED unit U is disposed on the seat cushion S1 and the seat back S2, but the LED unit U may be disposed on the headrest S3. Further, by linking the sound from the car audio output from the speaker 18 with the light emission color, color tone, and pattern of the LED unit U, visual stimulation linked to the sound can be given to the occupant. At this time, the speaker 18 is more preferably attached to the headrest S3.
Moreover, you may use in combination with the light emission means using the electroluminescent fiber arrange | positioned in the ball | bowl edge part and seating area | region of the sewing part of an outer skin.

  Here, together with the speaker 18 provided in the headrest S3, a noise canceling function is provided by a microphone provided in the vicinity of the headrest S3 for detecting noise, a control unit for outputting a canceling sound for canceling the noise, and a speaker for outputting the canceling sound. It is more preferable to provide a noise canceling mechanism. By providing a noise canceling speaker in the headrest S3, it is possible to reduce the noise felt by the occupant and to provide better sound quality.

  In the vehicle seat S of the present invention, the LED unit U is disposed on the pressure-receiving surface of the seat cushion S1 and the seat back S2, or the headrest S3, so that a wide area of the seating surface and the back surface can emit light. It is possible to provide a vehicle seat that can provide a decorative effect that is not required.

For vehicles that achieve both high brightness and uniform light emission on the seating surface and back surface (sitting area) and good seating feeling by providing the LED unit U under the translucent skin 16a and the translucent cushion pad 11. Sheets can be provided.
Furthermore, the use of LEDs as light emitters makes it possible to form the LED unit U with a long life and light weight, and to form a vehicle seat that achieves both a light emitting function and a seating feeling at a high level. can do.

  Further, the LED unit U provided in the seating area of the seat cushion S1 and the seat back S2 is composed of a large number of LED elements having the light emission colors of the three primary colors (R, G, B), so that various color tones and It is possible to provide a vehicle seat that can express a pattern and obtain an unprecedented decorative effect.

(Second Embodiment)
7 to 14 show an embodiment according to the second embodiment of the present invention. FIG. 7 is an explanatory perspective view of the air cell, FIG. 8 is an explanatory sectional view of the light emitting region, and FIG. 9 is an arrangement of the air cell in the vehicle seat. FIG. 10 is an example of a system configuration diagram, FIG. 11 is a control flow diagram in which the seat shape changes with the occupant's physique, FIG. 12 is a control flow diagram in which the seat shape changes with time, and FIG. FIG. 14 is a schematic sectional view of a seat cushion to which a temperature and humidity adjusting mechanism is attached.

Note that the same components as those in the first embodiment are denoted by the same reference numerals, and redundant description is omitted.
In the present embodiment, the vehicle seat S in the first embodiment is provided with a posture control mechanism as posture control means.

  The attitude control mechanism will be described with reference to FIGS. The posture control mechanism includes 15 air cells 22 (22a to 22o) provided on the seat cushion S1 and the seat back S2, a control device (control unit) and an air pump (pump) (not shown). The heat accumulator or the air conditioner 31 or the blower (blower) may be integrated. Moreover, between each air cell 22 (22a thru | or 22o), a control apparatus, and a pump, the wiring of the sensor as a detection part and the pipe body which guides the fluid are routed.

  The air cell 22 shown in FIG. 7 is formed in a hollow, substantially rectangular parallelepiped shape from a material having translucency and flexibility (flexibility), and has a function as a fluid holding bag that allows fluid to be taken in and out. doing. Film-like sensors 28 and 29 serving as detection units or measuring means are attached to the upper surface of the air cell 22 on the surface arranged on the seating surface side. The film sensors 28 and 29 have a good sensitivity because the film portion to be attached to the air cell 22 is formed in a ring shape. Further, a fluid inlet / outlet 27 for allowing fluid to flow into and out of the air cell 22 is attached to a surface other than the seating surface.

Capacitance sensors are used as the film sensors 28 and 29, and ring portions of the capacitance sensors are attached over a wide range of the air cell 22 on the seating surface side. Since the area of the ring portion is large, this capacitance sensor has good sensitivity.
However, the film-like sensors 28 and 29 can also be constituted by a pressure-sensitive sensor, a temperature sensor, a displacement sensor, or the like. A plurality of types of sensors may be combined and attached to the air cell 22.

  In addition, the air cell 22 is configured to be able to change individual thickness (shape) and hardness by changing the internal air pressure, and the plurality of air cells 22 are arranged on the seating surface side with a predetermined interval. The split cell structure arranged side by side also has a function as a cushion body (air cushion). The shape of the air cell 22 may be a bag shape formed by bonding edges of two sheets in addition to the box shape. In this case, the air cell 22 is suitable for the air cell 22 for changing the shape of the seating surface because the air cell 22 is thin and flat when the air is extracted. The shape of the seating surface side of the seat is changed by changing the shape of the air cell 22.

In the present embodiment, air is used as the fluid 23 that flows into and out of the air cell 22, but water, silicon oil, a gel substance, nitrogen gas, helium gas, or the like can be used in addition to air.
Moreover, as a raw material which has translucency, transparent or translucent resin, such as polyethylene, polyester, polyvinyl chloride, polyolefin, a fluororesin, can be considered, for example. Note that the air cells 22 (22k, 22l, 22m, 22n, and 22o: see FIG. 9) disposed at positions other than the light emitting region L such as the bank portion in the present embodiment do not need to have translucency, and thus are transparent. You may shape | mold from the raw material which does not have light nature. Even if it is formed from any material, the air cell 22 is configured to have a flexibility that deforms according to the internal pressure as a mechanical property.

  FIG. 8 shows the arrangement position of the air cells 22 (22g to 22j) arranged in the light emitting region L of the seat cushion S1 in the transverse section (II section in FIG. 1), and the translucent cushion pad. The air cell 22 is disposed at a position between the LED 11 and the LED unit U. Similarly, the air cell 22 (22a to 22f) disposed in the light emitting region L of the seat back S2 is disposed at a position between the translucent cushion pad 11 and the LED unit U.

In addition, air cells 22 (22k to 22o) disposed in a seating region other than the light emitting region L such as a bank surface are also disposed below the cushion pad 10.
However, the location of the air cell 22 is not limited to the above, and may be, for example, the upper side (the seating surface side) of the cushion pad 10 or the translucent cushion pad 11.

Further, FIG. 9 shows an arrangement position of the air cell 22 in the seating region of the vehicle seat S. In this embodiment, 15 air cells 22 (22a to 22o) are arranged.
In the seat cushion S1, four air cells 22g, 22h, 22i, and 22j are disposed in the bottom region, and air cells 22m and 22n are disposed on the left and right bank surfaces.

  Among these, the air cells 22g, 22h, 22i, and 22j in the bottom region are formed in a thin rectangular parallelepiped shape or a substantially rectangular bag shape in the thickness direction of the seat cushion S1, and the air cells 22m and 22n disposed on the bank surface. Is formed in a vertically long rectangular parallelepiped shape or rod shape so as to be embedded along the bank surface.

  The seat back S2 has a configuration in which a total of nine air cells (22a to 22f, 22k, 22l, 22o) are arranged. That is, there are nine in total, six on the pressure-receiving surface at the back (22a, 22b, 22c, 22d, 22e, 22f), two on the bank (22k, 22l), and one on the top of the back (22o). .

  Among these, the air cells 22a, 22b, 22c, 22d, 22e, and 22f disposed in the pressure receiving portion of the seat back S2 are arranged in the thickness direction of the seat back S2 in the same manner as the air cells 22g, 22h, 22i, and 22j at the bottom. It is formed in a thin, substantially rectangular parallelepiped shape or a substantially rectangular bag shape, and the air cells 22k, 22l disposed on the bank surface are also vertically elongated rectangular parallelepiped shapes so as to be embedded along the bank surface in the same manner as the seat cushion S1. Or it is formed into a rod shape. Further, the air cell 22o disposed in the upper portion of the back portion is formed in a shape that is long in the width direction of the seat back S2.

  Of course, the arrangement, number, and shape of the air cells 22 are not limited to the above, and can be changed as appropriate. In particular, the light emitting region L may be configured by a larger number of air cells. Alternatively, the air cells having the same shape may be arranged side by side over the entire seating region, and in this case, 10 to 20 air cells are provided for both the seat cushion S1 and the seat back S2.

  Next, control for changing the sheet shape in the control device will be described. The control device is based on sensor information obtained by measuring means such as film sensors 28 and 29 and a temperature / humidity meter, vehicle information detected from devices connected to a car navigation system, an ignition device, a speedometer, and the setting value selected by the occupant. The sheet shape can be changed. Several specific examples of the control for changing the sheet shape will be described below.

  As a first specific example of changing the seat shape by control, a case where the seat shape changes depending on the physique of the occupant will be described. The control device as the control means can calculate the physique of the seated occupant based on the information detected from the film sensors 28 and 29 attached to the air cell 22 (22a to 22o). Film sensors 28 and 29 are attached to all air cells 22. Further, the fifteen air cells 22 are configured so that their air pressures can be adjusted independently.

  FIG. 10 shows an example of a system configuration diagram of the vehicle seat S. As shown in FIG. In addition, when it is set as the structure which does not use members, such as the light emission mechanism shown in FIG. 10, a sheet | seat shape control mechanism, and the reservoir tank 44, it can remove suitably. Of course, changes such as replacing the air conditioner 31 with a regenerator and a humidity control device can be performed at any time.

Based on the calculated physique information, an air pump (not shown) connected to the control device is driven and controlled to change the air pressure of each air cell 22a to 22o to change the shape of the seating region of the vehicle seat S and the hardness of the seat ( Surface pressure) can be adjusted.
A specific processing flow when the seat shape changes depending on the physique of the occupant will be described with reference to FIG. Information from the film sensors 28 and 29 is detected in step S1, and the physique is determined in step S2. In step S2, the occupant's physique is determined from the mounting positions of the film sensors 28 and 29 and the measured values. Next, a sheet shape suitable for the physique is calculated based on the determined physique information, and a sheet shape corresponding to the physique is output by calculating an internal pressure value of each air cell 22 suitable for the shape (step S3). ) Based on the output result, the pressure of each air cell 22 is adjusted to change to a suitable sheet shape (step S4).

  Here, the pressure of each air cell 22 is adjusted by detecting the internal pressure of each air cell 22 with a pressure controller as a control circuit and adjusting the amount of internal fluid to independently control the pressure of each air cell. . The internal fluid amount is adjusted by adjusting the inflow amount of fluid from the pump (air pump) with a valve (electromagnetic valve). In addition, when a substance other than air is used as a fluid, a reservoir tank for storing the fluid is attached.

In addition, a control for changing to the optimum seat position by driving and controlling each air cell 22 and air pump in consideration of the occupant's physique determined by the film sensors 28 and 29 may be configured.
In step S3 (see FIG. 11), the seated occupant may be identified by comparing the physique information with the previously stored physique information, and may be changed to an arbitrary seat shape set by the occupant in advance. .
Furthermore, not only the shape of the seating area but also the seat slide, reclining, height (seat height), and headrest height can be changed simultaneously as the seat shape. In this case, these seat shapes can be controlled via a seat drive control mechanism connected to the reclining drive device, the seat slide drive device, the seat height drive device, and the headrest drive device.

  As a second specific example of changing the seat shape, support for getting on and off will be described. When getting on and off, the height of the bank surface is lowered to support boarding and getting off, and a series of operations of returning the seat shape upon completion of boarding and getting off can be automatically driven and controlled according to a preset program. In this case, the seat shape for boarding is maintained for a certain period of time after the door lock is unlocked, and the control is performed to change to the seat shape for getting off for a certain time after the operation of the ignition key (engine stop).

As a third specific example of changing the seat shape, a control for reducing numbness and fatigue of the occupant due to the seating by adjusting the surface pressure and the shape of a part of the air cell 22 located in the seating region will be described.
The flow of processing is shown in FIG. When the engine is started in step S1, the timer is turned on (step S2). Then, control for changing the sheet shape is performed by driving and controlling the air pump according to the time T determined in step S3.

  In the case of this embodiment, the following sheet shape change cycle is performed. First, after 5 minutes have elapsed from the timer ON, the air in the air cells 22g and 22h corresponding to the sciatic nodule portion is discharged, and air is again introduced 1 minute later. This is to prevent the numbness of the buttocks that is most likely to numb. Further, after 1 minute (7 minutes after the timer is turned on), the air in the air cells 22i and 22j corresponding to the thigh is discharged, and air is again introduced after 1 minute. This is because the thigh tends to cause numbness next to the buttocks. After 1 minute (9 minutes after the timer is turned on), the air cells 22m and 22n on the bank are exhausted and introduced after 1 minute, and the timer is reset after another 5 minutes (15 minutes after the timer is turned on). To do.

As described above, one cycle of exhausting and introducing the air cell 22 is 15 minutes, and this is repeated, thereby preventing the numbness caused by the occupant maintaining a constant posture without causing a physiological posture change. be able to.
Furthermore, the seating region can be vibrated and swung by the drive control of the air pump, and massage and sleepiness can be prevented.
These fatigue reduction functions can further improve the seating feeling, and the fatigue reduction effect can be further enhanced by driving control in combination with a temperature and humidity control mechanism described later.

As a fourth specific example of changing the seat shape, the seat pressure and the shape of the seating area can be changed according to road conditions by interlocking with the car navigation system.
FIG. 13 shows the flow of processing at this time. The flow of processing will be described with reference to FIG. 13. First, road information is detected from the car navigation system (step S1), and then a sheet shape corresponding to the road condition is selected from a database as storage means (step S2). To do. Then, the sheet shape is changed (step S3), and the flow ends.

As a specific example of the seat shape input as a set value in the database, on the mountain road, the air cells 22k, 22l, 22m, and 22n arranged on the bank surface and the air cell 22o on the seat back S2 are expanded to expand the bank surface and the seat back upper part. The sheet shape is increased. With this shape, a feeling of holding can be improved and a driving posture suitable for mountain roads can be obtained.
In addition, the height of the air cushion 22 (22g, 22h, 22i, 22j, 22o) of the seat cushion S1 and the upper portion of the seat back S2 is lowered during high speed traveling. With this seat shape, the seating position can be lowered to improve the stability, and the driving posture can be made suitable for high-speed traveling.

The light emitting mechanism can change the color tone (light emission and coloring) according to the operating state of the attitude control mechanism. For example, the LED unit U arranged below the air cell 22 under drive control is decorated to make the operation of the air cell 22 conspicuous by emitting light and changing color, and at that time, blinking and color change are performed in accordance with the rhythm. As a result, the psychological effect of giving a sense of speed and a sense of security to the operation of the air cell 22 can be enhanced.
In addition, the color of the part with the higher height is changed to a color with a high lightness such as the primary color system, while the light color and the color with a low lightness that are not noticeable to the coloration of the part with the lower height are selected. It is possible to make the occupant feel that there is a greater change than the change, and to increase the psychological effect that gives a sense of hold and a sense of security.
In particular, an effect of reducing psychological fatigue can be expected by setting the color tone with a sense of security and calmness.

  Further, the LED unit U is divided according to the shape of each air cell 22 arranged in the light emitting region L (see FIG. 1), and the air cell 22 (22a to 22j) and the LED unit U are integrally formed. You may comprise as a body-type unit. In this case, since the vehicle seat S is assembled after first assembling the integrated unit, it is possible to reduce the number of members at the time of assembling the seat, so that the mounting is easy and the accuracy of the mounting position is improved. is there.

In this embodiment, a temperature and humidity control mechanism can be further attached.
The temperature / humidity adjusting mechanism will be described below. FIG. 14 is a schematic cross-sectional explanatory view of the seat cushion S1 to which the temperature / humidity adjusting mechanism is attached.
The temperature / humidity adjustment mechanism includes the air conditioner 31 serving as air adjustment means (air adjustment unit) such as temperature and humidity and a control device, but may be configured integrally with the attitude control mechanism. The air conditioner 31 has a humidity adjusting function and is attached to the vehicle side below the seat cushion S1.

The air whose temperature and humidity are adjusted by the air conditioner 31 is guided between the LED unit U and the air cell 22 through the duct 34 and flows in accordance with the air passage 35 passing through the translucent cushion pad 11 and the translucent skin 16a. Released to the side of the seating surface. The case 4, LED module 3, and transparent cover 5 constituting the LED unit U are formed with holes for ensuring air permeability, and the adjusted air passes through the LED unit U and is guided to the back side of the air cell 22. It can also be configured.
The seat back S2 has the same configuration, and air adjusted through the duct 34 is also guided into the seat back S2. Of course, the air adjusted to the seating surface side is also emitted in regions other than the light emitting region L.

At this time, it is preferable to attach a temperature sensor 32 as a measuring means (detection unit) in the light-transmitting cushion pad 11 in the pressure receiving portions of the seat cushion S1 and the seat back S2.
The attachment position of the temperature sensor 32 is not limited to the above, and can be attached to any position in the seat. Further, the air conditioner 31 or the heat accumulator may be mounted on the seat cushion frame 13 of the seat cushion S1 to guide the adjusted air inside the seat without using the duct 34. Further, instead of the air conditioner 31 It can also consist of a heat accumulator and a humidity control device.

  The control device as the control means of the temperature / humidity adjusting mechanism is based on the temperature information in the seat from the temperature sensor 32 attached in the translucent cushion pad 11 and the temperature, humidity, set temperature, and humidity in the vehicle. This is a mechanism for determining an appropriate temperature and humidity of the air supplied into the seat S, and is connected to the air conditioner 31.

  Even when the air conditioner 31 is attached to the vehicle body side below the seat cushion S1, air with adjusted temperature and humidity may be supplied into the seat cushion S1 and the seat back S2 via the duct 34. In this case, the duct 34 is configured to have flexibility and is routed around the back side of the air cell 22 (the side opposite to the seating surface) or the back side of the LED unit U. Regulated air is discharged into the sheet from an outlet formed at an arbitrary position of the duct 34. The air released to the back side of the air cell 22 passes through the gap of the air cell 22 and the light-transmitting cushion pad 11 or the cushion pad 10 and the skin 16 and reaches the seating surface side of the vehicle seat S.

  With this configuration, the temperature of the seat cushion S1 and the cushion inside the seat back S2 and the skin are controlled while the temperature of the air is adjusted from the seating portion of the vehicle seat S. Since it is discharged directly to the back and back, the temperature can be adjusted more efficiently and quickly than the conventional air conditioner 31.

Further, since air is supplied from the inside of the vehicle seat S, the humidity can be adjusted and kept constant even in a portion where the humidity is likely to rise, such as the buttocks and the back region, which is also effective as a moisture countermeasure. .
Further, by adjusting the pressure in the duct 34 to a negative pressure or a negative pressure with the air pump of the air conditioner 31 being in an intake operation, the air in the seating area can be sucked and moisture can be absorbed. It has a great effect on the humidity adjustment and deodorizing function of the seat cushion S1 and the seat back S2.

  Further, when a heat accumulator and a humidity control device are used instead of the air conditioner 31, a blower (blower) may be used as the humidity control device. By supplying the air sent from the blower from the back surface of the air cell 22, moisture can be removed by a simpler method and kept at a comfortable humidity.

Of course, it can be interlocked with the operation of the light emitting mechanism according to the operating condition of the temperature and humidity adjusting mechanism.
Specifically, in the operation control of the air conditioner 31 of the temperature / humidity adjusting mechanism, when the set temperature is higher than the vehicle interior temperature (during heating), a warm color emission color such as orange or red that can image warmth When the set temperature is lower than the in-vehicle temperature (during cooling), a psychological effect can be expected by causing the seating area of the seat to emit light in a cold color system such as light blue or blue, which can imagine coldness.

(Third embodiment)
FIG. 15 is an explanatory diagram showing an example of the temperature control module 40 configured to circulate fluid in the air cell 46 according to the third embodiment of the present invention.
In the second embodiment, the air whose temperature and humidity are adjusted by the temperature and humidity adjustment mechanism is discharged from the duct 34 provided in the seat, but in the present embodiment, the fluid temperature in the air cell 22 is set. The structure is adjusted.
In addition, it is good also as a structure which discharge | releases the air which adjusted the temperature and humidity from the hole provided in the air cell 22 by providing a hole in the air cell 22. FIG.

A substance other than air may be used as the fluid 23 introduced into the air cell 22. In this case, it is preferable to use a liquid having a large heat capacity, helium gas, or a gel substance. In particular, the use of a gel-like substance can improve the seating feeling (fit feeling).
Further, if the fluid inlet / outlet 27 in the air cell 22 is divided into an inlet and an outlet to circulate the fluid 23 whose temperature and pressure are adjusted, a temperature adjusting mechanism with good fluid circulation efficiency and heat transfer efficiency can be configured. it can.

FIG. 15 shows an example of a temperature control module configured to circulate the fluid 23 in the air cell 46. The temperature control module 40 shown in FIG. 15 has twelve air cells 46. Further, a gel material is used as the fluid 23.
The temperature adjustment module 40 is disposed on the seat cushion S1 or the seat back S2 of the vehicle seat S, and includes an air cell 46, a temperature adjustment mechanism 42 as a fluid adjustment unit, a reservoir tank 44, and a temperature adjustment mechanism 42. And a tube that transports the fluid 23 between the air cell 46.

The air cell 46 has two fluid inlets / outlets 27 formed in the air cell 22 on the inlet side and the outlet side, and improves the circulation efficiency of the fluid. By making the fluid 23 easy to circulate, the temperature of the fluid 23 can be easily adjusted. A film sensor 28 is disposed on the seating surface side of each air cell 46.
The temperature adjustment mechanism 42 is a device that adjusts the temperature of the fluid 23 in the air cell 46, and includes a valve and a control circuit that adjust the flow rate and pressure of the fluid 23 in addition to the temperature adjustment function. This control circuit is linked to the vehicle body side information, and can control the shape and hardness (pressure) of the air cell 46 independently for each air cell 46.

The vehicle seat S according to the first to third embodiments described above can be further combined with a pre-crash operating mechanism and an active headrest mechanism.
The pre-crash operating mechanism is a mechanism configured to be able to feed back a signal from a collision sensor (not shown) attached to the vehicle body side to control the attitude control mechanism, and when a collision danger signal is issued from the collision sensor. The seat seat surface vibrates to notify the occupant of the danger and can be automatically changed to a position that reduces the impact.

  In addition, if a danger such as wobbling caused by falling asleep is detected, the cell in the seat may vibrate and emit a warning bell. Furthermore, if an emergency collision cannot be avoided, the air cell 22 reacts instantly. It is more preferable to change the seating posture to reduce the obstacle.

  In the first embodiment, the vehicle seat S having a light emitting mechanism and a noise canceling mechanism is provided. In the second and third embodiments, in addition to the light emitting mechanism, an attitude control mechanism, a temperature / humidity adjusting mechanism, and the like are provided. Although the vehicle seat S has been described, it is assumed that the mechanisms described above can be used in appropriate combinations, and can be combined with a known pre-crash operating mechanism and active headrest mechanism. Of course, it is good also as a structure provided with only an attitude | position control mechanism or a temperature / humidity adjustment mechanism, without providing a light emission mechanism.

  Furthermore, a combined effect can be expected by mounting the above-described mechanisms in combination with existing mechanisms in an organic manner. For example, by using a combination of a light emitting mechanism, attitude control mechanism, noise canceling mechanism, and car audio system, it is possible to perform light emission (sight) and sheet shape change (tactile sense) according to high-quality sound (hearing). Expect an unprecedented effect.

  In addition, each operation of the accelerator, brake, steering wheel, gear, etc., lighting of headlights, operation of direction indicators, parking brakes, light emission (color tone change) and seat shape change in conjunction with ETC, inter-vehicle distance sensor, etc. Or can be configured to vibrate. Since the seat responds to each operation of the occupant, intuitive operability can be improved, and it is possible to further prevent erroneous operations such as fatigued occupants and elderly people. In addition, by setting a sheet response pattern for each operation, confirmation of the display panel on the dashboard is not necessary, so that an effect of improving safety can be expected.

  Further, the light emission (color change), shape change, and vibration of the seat linked with the occupant's operation can give the occupant an unprecedented operational feeling. In particular, by changing the seat shape, it is possible to obtain a three-dimensional movement obtained by adding a movement in the height direction to a conventional seat that can only move two-dimensionally during traveling.

  In the present embodiment, the seat cushion S1 of the front seat of the automobile has been described as a specific example. However, the present invention is not limited to this, and the same configuration can be applied to the seat cushion and the seat back of the rear seat. It is. Moreover, it is applicable not only to a vehicle seat but also to a sofa or a chair.

1 is a schematic perspective view of a vehicle seat according to a first embodiment of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS It is II schematic sectional explanatory drawing of the vehicle seat which concerns on 1st Embodiment of this invention. It is a section explanatory view of the luminescence field concerning a 1st embodiment of the present invention. It is a control flow figure in which the color tone of the light emission area concerning a 1st embodiment of the present invention changes every time T1. It is a control flow figure to which the light of the light emission area concerning a 1st embodiment of the present invention moves. It is a control flowchart which changes the color tone of the light emission area which concerns on 1st Embodiment of this invention by vehicle body information. It is a perspective explanatory view of an air cell concerning a 2nd embodiment of the present invention. It is sectional explanatory drawing of the light emission area | region which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows the example of arrangement | positioning of the air cell in the vehicle seat which concerns on 2nd Embodiment of this invention. It is an example of the system block diagram of the vehicle seat which concerns on 2nd Embodiment of this invention. It is a control flow figure in which the seat shape of the vehicular seat concerning a 2nd embodiment of the present invention changes with a crew member's physique. It is a control flow figure in which the seat shape of the vehicular seat concerning a 2nd embodiment of the present invention changes with time. It is a control flow figure in which the seat shape of the vehicular seat concerning a 2nd embodiment of the present invention changes with road information. It is a cross-sectional schematic explanatory drawing of the seat cushion which attached the temperature / humidity adjustment mechanism which concerns on 2nd Embodiment of this invention. It is explanatory drawing which shows an example of the temperature control module made into the structure which the fluid circulates through the inside of the air cell which concerns on 3rd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS S Vehicle seat S1 Seat cushion S2 Seat back S3 Headrest L Light emission area U LED unit 3 LED module 4 Case 5 Transparent cover 10 Cushion pad 11 Translucent cushion pad 13 Seat cushion frame 15 Side cover 16 Skin 16a Translucent skin 18 Speakers 22, 46 Air cell 23 Fluid 27 Fluid inlet / outlet 28, 29 Film sensor 31 Air conditioner 32 Temperature sensor 34 Duct 35 Air passage 40 Temperature control module 42 Temperature control mechanism 44 Reservoir tank

Claims (7)

A vehicle seat in which a cushion body is covered with an outer skin,
A plurality of fluid retaining bags disposed on the opposite side of the skin of the cushion body;
A pump connected to the plurality of fluid holding bags via a tubular body;
A control unit for controlling the driving of the pump;
A plurality of detection units connected to the control unit;
A light emitting means ,
At least one of the previous SL detector provided in each of the plurality of fluid holding bag,
The controller is
Judging the physique of the seated occupant based on the output signal from the detection unit provided in each of the plurality of fluid holding bags,
By controlling the driving of the pump and taking in and out the fluid in the plurality of fluid holding bags, a sheet shape corresponding to the physique is obtained.
Change the light emitted from the light emitting means according to the control of the pump,
Before SL detector is a capacitive sensor formed in a ring shape, provided in each of the plurality of fluid holding bag,
The seat is characterized in that the ring-shaped electrostatic capacitance sensor is attached over a surface on the seating surface side of the fluid holding bag.   The pump is controlled so that the fluid is discharged from the fluid holding bag on the bank for a certain period of time after the door lock is unlocked or for a certain period of time after the engine operation of the ignition key is stopped. The sheet according to claim 1, wherein the sheet is lowered. A vehicle seat in which a cushion body is covered with an outer skin,
A plurality of fluid retaining bags disposed on the opposite side of the skin of the cushion body;
A pump connected to the plurality of fluid holding bags via a tubular body;
A control unit for controlling the driving of the pump;
A plurality of detection units connected to the control unit ,
At least one of the previous SL detector provided in each of the plurality of fluid holding bag,
The controller is
Judging the physique of the seated occupant based on the output signal from the detection unit provided in each of the plurality of fluid holding bags,
By controlling the driving of the pump and taking in and out the fluid in the plurality of fluid holding bags, a sheet shape corresponding to the physique is obtained.
Controlling the pump so as to discharge the fluid from the fluid holding bag at the upper part of the hip, thigh and seat back during high-speed running;
Before SL detector is a capacitive sensor formed in a ring shape, provided in each of the plurality of fluid holding bag,
The seat is characterized in that the ring-shaped electrostatic capacitance sensor is attached over a surface on the seating surface side of the fluid holding bag.   The said control part controls the said pump according to the signal from the collision sensor provided in the vehicle, A seating surface is vibrated or the said seat shape is changed, The any one of Claims 1 thru | or 3 characterized by the above-mentioned. Item 1. The sheet according to item 1. Wherein, in response to information obtained from the car navigation system, any one of claims 1 to 4, wherein the controller controls the pump to out at least a portion of the fluid in the fluid holding bag Item 1. The sheet according to item 1. The seat comprises an audio system;
The said control part controls the said pump according to the sound information from the said audio system, A seating surface is vibrated or the said seat shape is changed, The any one of Claims 1 thru | or 5 characterized by the above-mentioned. The described sheet. The control unit operates an accelerator, a brake, a handle, a gear or a parking brake, or turns on a headlight, a direction indicator, an ETC, or an inter-vehicle distance sensor to vibrate a seating surface or change the seat shape. The sheet according to any one of claims 1 to 6 , characterized in that:

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