JP5308020B2 - Sheet - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a vehicle seat providing an unprecedented decorative effect by making a wide area of a seating surface of a seat cushion and a seat back planarly emit a light. <P>SOLUTION: The vehicle seat S having the seat cushion S1 and the seat back S2 is disposed with a translucent cushion pad 11 and a translucent cover 16a in a seating area, and an LED unit U under the translucent cushion pad 11, so as to optionally change the color tone of the seating area by changing the color of the emitted light of the LED unit U. Alternatively, the color tone of the seating area can be changed by detecting the conditions of the seating area of the seat, such as a loading condition, an ambient temperature, and humidity around the seat. <P>COPYRIGHT: (C)2009,JPO&amp;INPIT

Description

  The present invention relates to a seat, and more particularly to a vehicle seat having a light emitting function.

  Conventionally, as a vehicle seat having a light emitting function, for example, a phosphorescent pigment is mixed into a seat surface or a material of a rim, and a luminous effect is obtained by this luminescent effect, or a fluorescent paint is applied to a skin material or a rim material. And the like to obtain a light emitting effect by irradiating with black light.

  However, those using the above-mentioned fluorescent paint have the disadvantages that light emission cannot be controlled and the amount of light is small. On the other hand, those using the black light have a drawback that it is difficult to obtain a continuous light emitting effect because only the portion irradiated with the light emits light.

  In order to solve such a problem, a sheet has been proposed which has a light emitting effect that is linearly continuous by means of an electroluminescent fiber disposed in the bead formed on the stitched portion or the stitched portion of the skin or on the seating surface. (For example, refer to Patent Document 1).

JP 2001-186965 A

  The technology disclosed in Japanese Patent Laid-Open No. 2001-186965 is to obtain a linear light-emitting effect at a portion where an electroluminescent fiber is disposed on a ball edge or a seating surface, and has a wide seat cushion or seat back. There is a problem that it is difficult to emit light in a uniform surface area.

In addition, in the case of a structure in which a light source is placed under a conventional cushion pad, a light source that emits light in a planar shape can be attached, but the light intensity of the light source is not increased because the cushion pad has low translucency. There was a problem that the seating surface did not emit light.
On the other hand, in the structure in which the light source is arranged between the skin and the cushion pad, there is a problem that the cushioning property is lowered and a good seating feeling cannot be secured because the rigid light source is arranged on the upper surface of the cushion pad. As with the cushion pad, since the translucency of the epidermis is small, there is a problem that the seating surface does not emit light unless the light amount of the light source is increased.

  SUMMARY OF THE INVENTION In view of the above problems, an object of the present invention is to provide a vehicle seat that can provide an unprecedented decorative effect by emitting light over a wide area of seating surfaces of a seat cushion and a seat back.

The object is achieved, according to claim 1 in engagement Resid over preparative, the sheet is a sheet formed by changeable constructed the color tone of the seating area in accordance with the seating conditions, emission to the seating area of the seat comprising means, translucent epidermis having a light-transmitting property in the light-emitting area, is solved by Rukoto with a non-translucent skin having no light-transmitting non-light-emitting region.
In this way, by configuring the seating area so that the color tone of the seating area can be changed according to the seating situation, it is possible to provide a seat that can provide an unprecedented decorative effect.
The sheet includes a light-transmitting cushion body having a light-transmitting property and a non-light-transmitting cushion body not having a light-transmitting property, and the light-transmitting cushion body is the light-emitting region. The non-light-transmitting cushion body may be disposed on the back side of the non-light-transmitting skin, which is the non-light emitting region.
In addition, the sheet may include a side cover that does not have translucency and covers a side part of the translucent cushion body.
The light emitting means preferably includes a transparent cover for protecting the light source on the seating surface side.
The seat includes a temperature sensor and a first control device that controls the light emitting means, and the light emitting means is connected to an air conditioner and the temperature sensor, and the control device is connected to the temperature sensor. When the obtained temperature is higher than the set temperature or when heating, the warm emission color is emitted, or when the temperature obtained from the temperature sensor is lower than the set temperature or when cooling, the cold emission color is emitted. You may make it control a light emission means.
Further, the seat is a vehicle seat and includes a second control device that controls the light emitting means, and the second control device operates an accelerator, a brake, a handle, a gear, or a parking brake, or You may make it change the color tone of the light emitted from the said light emission means in response to lighting of a headlight, a direction indicator, ETC, or a distance sensor between vehicles.
The translucent cushion is a sheet-like fiber structure, and it is preferable that the length direction of the fibers of the sheet-like fiber structure is directed to a direction in which a load from an occupant is applied.

The vehicle seat of the present invention can provide a vehicle seat without decorative effect in traditional obtained.

  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 of the seating surface is different from the region that does not emit light such as the bank surface or the front side of the seating surface.
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 passenger.

  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 holder as 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 LED (light emitting diode) elements. 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 configured 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. Gradually change (step S3), when all the LEDs are turned off when turned on (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 location where the sensor is disposed is detected by a plurality of sensors (capacitance sensors) disposed on the translucent cushion pad 11 by detecting the pressure of the portion loaded by the occupant's seating. The color tone of the LED element in the portion corresponding to is changed according to the detected pressure value.

  A control flow in this case is shown in FIG. In step S1, the sensor load pressure value is read into the control device, and the sensor mounting position information stored in advance in step S2 is referred to. Next, the color tone of the sheet is expressed by using a known calculation method that expresses the color tone with the high pressure value being red, the low pressure value is blue, and the portion where the sensor is not attached is estimated from the detection values from the surrounding sensors. By calculating (step S3) and outputting the sheet color tone to the LED module (step S4), the color tone is gradually changed according to the load situation of the seating area.

  Further, when the temperature and humidity around the seat are detected and the color tone of the seat S is changed based on the detection results, the temperature and humidity from the thermometer and hygrometer attached to the underside of the vehicle seat S are detected. Humidity is detected, the sensory temperature is calculated from those 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 vehicle, car audio systems, car navigation systems, ETC, seating sensors (capacitance sensors), mobile phones, vehicle speedometers, tachometers, turbo pressure gauges, inter-vehicle sensors, fuel gauges, etc. It may be linked with 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.

The sheet-like fiber structure preferably has a density distribution in the range of 0.015 to 0.20 g / cm ³ . 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, when a seated person is seated, a comfortable seating feeling can be maintained for a long time.

  Further, even when the vehicle seat S has a sag, the vehicle body S has a higher temperature than the glass transition point of the heat-adhesive composite staple fiber and the inelastic crimped staple fiber, and the heat-adhesion. The sag can be recovered by spraying steam having a temperature lower than the melting point of the conductive composite short fiber.

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 12 show an embodiment according to a second embodiment of the present invention, FIG. 7 is a perspective explanatory view of an air cell, FIG. 8 is a sectional explanatory view of a light emitting region, and FIG. 9 is an arrangement of the air cell in a vehicle seat. FIG. 10 is a control flow diagram in which the seat shape changes with the occupant's physique, FIG. 11 is a control flow diagram in which the seat shape changes with time, and FIG. 12 is a control flow diagram in which the seat shape changes with road information.

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 20 as posture control means.

  The attitude control mechanism 20 will be described with reference to FIGS. The attitude control mechanism 20 includes 15 air cells 22 (22a to 22o) provided in the seat cushion S1 and the seat back S2, a control device (not shown), an air pump, a heat accumulator, or an air conditioner. Further, between each air cell 22 (22a to 22o), the control device, and the air pump, sensor wiring and fluid pipes 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). Film sensors 28 and 29 as measuring means are attached to the upper surface of the air cell 22 on the surface (upper surface) of the air cell 22 arranged on the seating surface side. The film-like sensors 28 and 29 have a film portion to be attached to the air cell 22 in a ring shape, and have better sensitivity than conventional pressure-sensitive sensors. Further, a fluid inlet / outlet port 27 for flowing into and out of the air cell 22 is attached to a surface other than the seating surface.

  The air cell 22 is a cell structure formed so that the thickness can be changed by changing the internal air pressure, and also has a function as a cushion body. 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, since the air cell 22 is flat when the air is extracted, it is suitable as the air cell 22 for changing the shape of the seating surface. 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 flowing into and out of the air cell 22, but water, silicon oil, gel material, 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 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 can change the sheet shape based on information detected from measuring means such as the film sensors 28 and 29 and a thermometer, or equipment connected to a car navigation system. 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-like 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 the respective air pressures can be adjusted independently.

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 according to the occupant's physique will be described with reference to FIG. Information from the film sensor 28 (pressure sensor) is detected in step S1, and the physique is determined in step S2. In step S2, a known method for judging the occupant's physique from the mounting position of the film sensor 28 and the pressure value is used. Next, a suitable sheet shape is calculated based on the determined physique information, and an internal pressure value of each air cell 22 suitable for the shape is output (step S3). Based on the output result, the pressure of each air cell 22 is output. Is adjusted to a suitable sheet shape (step S4).

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. 10), the seated occupant may be identified by comparing the physique information with the physique information stored in advance, 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.

  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, control for reducing numbness and fatigue of the occupant due to seating by adjusting the surface pressure 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 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.

In this way, one cycle of exhausting and introducing the air cell 22 is 15 minutes, and this is repeated to prevent the numbness of the buttocks that occurs when the seated person maintains a certain posture without changing the physiological posture. can do.
Furthermore, the driving control of the air pump can make the seating region vibrate or swing, thereby preventing massage and drowsiness.
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 / humidity adjusting mechanism 30 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. 12 shows the flow of processing at this time. The process flow will be described with reference to FIG. 12. 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 the database (step S2). Then, the sheet shape is changed (step S3), and the flow ends.

As a specific example of the seat shape input to 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 inflated to increase the height on the bank surface and the seat back top. The sheet shape increases the height. 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 emit light and color in accordance with the operating state of the attitude control mechanism 20. For example, by decorating the air cell 22 to make the operation of the air cell 22 conspicuous by emitting and changing the color of the air cell 22 under drive control, at that time, blinking or changing the color tone according to the rhythm, A psychological effect that gives a sense of security can be expected.
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. The occupant can feel that there is a greater change than the change, and the psychological effect of enhancing the sense of hold and security can be improved.

  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, the number of members at the time of assembling the seat can be reduced, so that the mounting is easy and the accuracy of the mounting position is improved. is there.

A temperature / humidity adjusting mechanism 30 (not shown) can be further attached to the present embodiment.
The temperature / humidity adjusting mechanism 30 will be described below.
The temperature / humidity adjusting mechanism 30 includes an air conditioner and a control device as temperature and humidity adjusting means. The air conditioner has a humidity adjusting function and is attached to the bottom of the seat cushion S1.
Moreover, it can also be comprised with a thermal storage and a humidity control apparatus instead of an air conditioner.

At this time, it is preferable to install a temperature sensor as a measuring means in the translucent cushion pad 11 of the pressure-receiving portions of the seat cushion S1 and the seat back S2.
The attachment position of the temperature sensor is not limited to the above, and can be attached to any position in the seat. Moreover, it is good also as a structure which attaches an air conditioner or a heat storage device to the vehicle body floor side below seat cushion S1, and guide | induces an air blowing outlet inside a seat.

  The control device as the control means of the temperature / humidity adjusting mechanism 30 is based on the temperature information in the seat from the temperature sensor 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 air to be supplied into the seat S, and is connected to an air conditioner (not shown).

  The air whose temperature and humidity are adjusted by the air conditioner is guided to a duct (not shown) and supplied into the seat cushion S1 and the seat back S2. The duct is disposed on the back side (opposite to the seating surface) of the air cell 22, and air whose temperature and humidity are adjusted is discharged into the seat from a fluid outlet formed at an arbitrary position of the duct. 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 of the seat S.

  With this configuration, the temperature-adjusted air from the seating portion of the vehicle seat S passes through the seat cushion S1 and the seat back S2 while adjusting the temperature of the cushion body and the skin inside the seat cushion S1 and the seat back S2. Because it is discharged directly to the back, the temperature can be adjusted quickly compared to conventional air conditioners.

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. .
Furthermore, by adjusting the pressure in the duct to negative pressure or negative pressure by operating the air pump of the air conditioner to intake air, 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.

  In the present embodiment, the air whose temperature and humidity are adjusted by the temperature / humidity adjusting mechanism 30 is released from the duct provided inside the seat, but the structure in which the air temperature in the air cell 22 is adjusted by the temperature / humidity adjusting mechanism 30 is used. Alternatively, the air cell 22 may be provided with a hole so that air whose temperature and humidity are adjusted is discharged from the hole provided in the air cell 22.

Of course, 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, or a gel substance. In particular, the use of a gel-like substance can improve the seating feeling (fit feeling).
The fluid inlet / outlet 27 in the air cell 22 may be divided into an inlet and an outlet to circulate the fluid 23 whose temperature and pressure are adjusted. In this case, a highly efficient temperature adjusting mechanism can be configured.

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 30.
Specifically, in the operation control of the air conditioner of the temperature / humidity adjusting mechanism 30, when the set temperature is higher than the vehicle interior temperature (during heating), as a warm-colored 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.

The vehicle seat according to the first and second 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 20, and when a collision danger signal is generated 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 the light emitting mechanism and the noise canceling mechanism, and in the second embodiment, in addition to the light emitting mechanism, the attitude control mechanism 20, the temperature / humidity adjusting mechanism 30, the pre-crash operating mechanism, Although the vehicle seat S provided with the active headrest mechanism and the like has been described, the mechanisms described above can be used in appropriate combination. Of course, it is good also as a structure provided only with the attitude | position control mechanism 20 or the temperature / humidity adjustment mechanism 30 without providing the 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 the light emitting mechanism, the attitude control mechanism 20, the noise canceling mechanism, and the car audio system, light emission (sight) and sheet shape change (tactile sense) can be performed in accordance with 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 region L which concerns on 1st Embodiment of this invention changes for every time T1. It is a control flow figure in which the light of the light emission area | region L which concerns on 1st Embodiment of this invention moves. It is a control flowchart which changes the color tone of the light emission area | region L which concerns on 1st Embodiment of this invention with sensor 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 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.

Explanation of symbols

DESCRIPTION OF SYMBOLS S Vehicle seat S1 Seat cushion S2 Seat back S3 Headrest F Seat frame 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 Sexual skin 18 Speaker 20 Attitude control mechanism 22 Air cell 23 Fluid 27 Fluid inlet / outlet 28, 29 Film sensor 30 Temperature / humidity adjustment mechanism

Claims (7)

A seat configured to be able to change the color tone of the seating area according to the seating situation ,
A light emitting means is provided in the seating area of the seat,
A sheet comprising a light-transmitting skin having a light-transmitting property in a light-emitting region and a non-light-transmitting skin having a light-transmitting property in a non-light-emitting region . A translucent cushion body having translucency and a non-translucent cushion body having no translucency,
The translucent cushion body is disposed on the back side of the translucent skin that is the light emitting region,
The sheet according to claim 1, wherein the non-light-transmitting cushion body is disposed on a back side of the non-light-transmitting skin that is the non-light-emitting region. The sheet according to claim 1, further comprising a side cover that does not have translucency and covers a side surface portion of the translucent cushion body. The sheet according to any one of claims 1 to 3, wherein the light emitting means includes a transparent cover for protecting the light source on a seating surface side. A temperature sensor;
A first control device for controlling the light emitting means,
The light emitting means is connected to an air conditioner and the temperature sensor,
  When the temperature obtained from the temperature sensor is higher than a set temperature or when heating, the controller emits a warm-colored luminescent color, or when the temperature obtained from the temperature sensor is lower than the set temperature or when cooled, a cool color system The sheet according to any one of claims 1 to 4, wherein the light emitting means is controlled so as to emit light of a different color. The seat is a vehicle seat,
A second control device for controlling the light emitting means;
The second control device operates the accelerator, the brake, the handle, the gear or the parking brake, or turns on the headlight, the direction indicator, the ETC, or the inter-vehicle distance sensor, and adjusts the color tone of the light emitted from the light emitting means. The sheet according to any one of claims 1 to 5, wherein the sheet is changed. The said translucent cushion body is a sheet-like fiber structure, The length direction of the fiber of this sheet-like fiber structure is suitable for the direction where the load from a passenger | crew is applied. Sheet.

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