JP2018103886A - Seat for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To give heat of a seat heater for a sitting surface efficiently.SOLUTION: A seat for a vehicle comprises: a seat cover 6S forming a sitting surface SS of a seat; a seat heater 10 arranged in the backside of the seat cover 6S; and a planar heat conduction member 30a giving the heat of the seat heater 10. At a heat conduction site (a first heat conduction site 31) provided to the heat conduction member 30a, the heat of the seat heater 10 is easy to be given for the surface direction of the heat conduction member 30a than the direction of the sitting surface SS.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a vehicle seat provided with a planar heat conducting member capable of transferring heat of a seat heater to a seating surface of the seat.

  As this type of vehicle seat, a vehicle seat including a skin material that constitutes a seating surface of the seat, a cushion pad body that elastically supports an occupant, a seat heater, and a planar cushioning material is known. (See Patent Document 1). In the known technology, a seat heater that generates heat when energized is interposed between a cushion pad body and a skin material. The seat heater includes a planar base cloth and a metal heating wire fixed on the base cloth. The cushioning material is a soft face material based on polyester fibers, and contains fibers with high thermal conductivity such as carbon fibers at random. Accordingly, a cushioning material is disposed between the seat heater and the skin material, and the cushioning material can heat the occupant by transmitting the heat of the seat heater to the seating surface side while covering a relatively hard heating wire.

Japanese Patent No. 3669099

  By the way, in the above-mentioned seat configuration, there is a demand to heat the seating surface of the seat widely in the surface direction by the heat of the seat heater from the viewpoint of efficiently heating the occupant. However, in the known buffer material, fibers having high thermal conductivity are randomly arranged in polyester fibers. For this reason, the cushioning material has no regularity in the direction in which the heat of the seat heater is transmitted, and the skin material portion on the heating wire tends to be heated relatively strongly. For this reason, in the configuration of the publicly known technology, the seating surface of the seat is locally heated, which is a slightly unsuitable configuration for efficiently heating the occupant. Further, in the configuration of the known technology, when the seating surface portion that is relatively strongly heated is in contact with the air, a lot of heat escapes from the seating surface portion, which reduces the power consumption of the seat. It was not a configuration that could be easily adopted from a viewpoint. The present invention has been devised in view of the above points, and a problem to be solved by the present invention is to efficiently transfer the heat of the seat heater toward the seating surface.

  As means for solving the above-mentioned problems, a vehicle seat according to a first aspect of the present invention includes a seat cover that constitutes a seating surface of the seat, a seat heater disposed on the back side of the seat cover, and a surface that transfers heat of the seat heater. A heat conductive member. In this type of seat configuration, it is desirable that the heat of the seat heater is efficiently transmitted toward the seating surface by, for example, widely transmitting in the surface direction of the seating surface. Therefore, in the present invention, the heat transfer portion provided in the heat conductive member is more easily transmitted toward the surface direction of the heat conductive member than to transfer the heat of the seat heater toward the seating surface. In the present invention, the seating surface can be widely heated in the surface direction by transmitting the heat of the seat heater to the seating surface while transmitting the heat of the seat heater in the surface direction of the heat conducting member.

  The vehicle seat of the second invention is the vehicle seat of the first invention, wherein the heat conducting member includes a first heat transfer portion as a heat transfer portion, a seating surface side surface of the first heat transfer portion, and a seat heater side. The second heat transfer part is disposed on at least one of the surfaces of the heat transfer member in a stacked state, and the second heat transfer part is seated rather than transferring the heat of the seat heater toward the surface direction of the heat conducting member. It is easy to convey towards the surface. In the present invention, the heat of the seat heater can be transmitted in the surface direction by the first heat transfer site and efficiently transmitted to the seating surface side by the second heat transfer site.

  The vehicle seat of the third invention is the vehicle seat of the second invention, wherein the second heat transfer site is provided only on the seating surface side surface of the first heat transfer site. In the present invention, the heat of the seat heater can be efficiently transmitted to the seating surface side by the second heat transfer portion while being transferred in the surface direction by the first heat transfer portion.

  The vehicle seat according to a fourth aspect of the present invention is the vehicle seat according to any one of the first to third aspects of the present invention, which includes a seat pad that is disposed on the back side of the seat cover and elastically supports an occupant, and a seat heater The heat insulating member is disposed between the seat pad and the seat cover, and is less likely to transfer heat than the seat pad between the seat pad and the seat heater. In the present invention, the heat insulating member can prevent the heat of the seat heater from escaping to the seat pad side as much as possible.

  The vehicle seat according to a fifth aspect of the present invention is the vehicle seat according to any one of the first to fourth aspects of the present invention, wherein the seat heater is provided with a non-heat generating portion that does not generate heat, and the non-heat generating portion includes a seat heater. A penetrating portion that penetrates through in the thickness direction is provided. In the present invention, when it is desired to dispose other members such as a duct and a wiring through the seat heater, these other members can be disposed by being inserted through the penetration portion of the non-heat generating portion.

  The vehicle seat according to a sixth aspect of the present invention is the vehicle seat of any one of the first to fifth aspects, wherein the heat conducting member is integrated with the seat heater. In the present invention, since the seat heater and the heat conducting member are integrated, the arrangement work of the heat conducting member can be simplified, and the heat conducting member can be stably placed at an appropriate position of the seat heater. I can leave.

  The vehicle seat of the seventh invention is the vehicle seat of any one of the first to sixth inventions, wherein the heat conducting member is integrated with the seat cover. In the present invention, since the seat cover and the heat conducting member are integrated, the arrangement work of the heat conducting member can be simplified, and the heat conducting member can be stably disposed at an appropriate position of the seat cover. I can leave.

  According to the first aspect of the present invention, the heat of the seat heater can be efficiently transmitted toward the seating surface. According to the second invention, the heat of the seat heater can be transmitted more efficiently toward the seating surface. Further, according to the third invention, the heat of the seat heater can be more efficiently transmitted toward the seating surface. According to the fourth invention, the heat of the seat heater can be efficiently transmitted toward the seating surface without loss as much as possible. Further, according to the fifth aspect, it is possible to efficiently transfer the heat of the seat heater toward the seating surface while improving the usability of the seat heater. According to the sixth and seventh inventions, the heat of the seat heater can be efficiently and stably transmitted toward the seating surface.

It is a perspective view of a vehicle seat. It is a front view of a seat heater. It is a schematic sectional drawing of a seat cover, a seat heater, and a heat conduction member. It is a schematic perspective view of a heat conductive filler. It is a schematic perspective view of a seat heater and a heat conduction member. It is a schematic sectional drawing of the seat cover of a modification 1, a seat heater, and a heat conduction member. It is a schematic sectional drawing of the seat cover of a modification 2, a seat heater, and a heat conduction member.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. In each drawing, for convenience, arrow lines indicating the front-rear direction, the left-right direction, and the up-down direction of the vehicle seat may be illustrated. In FIG. 5, for the sake of convenience, the direction in which heat is transmitted is indicated by a thick arrow. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these seat constituent members includes a seat frame (4F, 6F, 8F) forming a seat skeleton, a seat pad (4P, 6P, 8P) forming a seat outer shape, and a seat cover (4S, 6S, 8S). A lower portion of a seat back 6 (details will be described later) is connected to the rear portion of the seat cushion 4 so as to be able to rise and fall, and a headrest 8 is disposed on the upper portion of the seat back 6 in a standing state.

[Seatback]
The seat back 6, together with the basic configuration (6F, 6P, 6S) described above, with reference to FIGS. 2 and 3, the seat heater 10 and a plurality of heat conduction members (first heat conduction member 30 a to fourth heat conduction). 30 d) and a heat insulating member 50 (details of each member will be described later). Here, the seat heater 10 (described in detail later) is a face material that can generate heat when energized, and is disposed between the seat cover 6S and the seat pad 6P. Then, the seating surface SS of the seat shown in FIG. 3 which is the surface of the seat cover 6S is heated by the heat of the seat heater 10. In this type of configuration, the passenger on the seating surface SS is efficiently heated. In view of this, it is desirable that the seating surface SS can be widely heated in the surface direction by the heat of the seat heater 10. Therefore, in this embodiment, the heat of the seat heater 10 is efficiently transmitted toward the seating surface SS by the heat conductive members 30a to 30d described later. Hereinafter, each configuration will be described in detail.

[Basic configuration]
Here, the seat back 6 is formed by covering the seat pad 6P on the seat frame 6F (not shown) with the seat cover 6S. The seat frame 6F is typically a substantially arch-shaped frame, and can be formed of a material such as a metal or a hard resin having excellent rigidity. The seat pad 6P is a member that can elastically support an occupant and can be formed of a foamed resin such as polyurethane foam (density: 10 kg / m ^{3 to} 60 kg / m ³ ). The seat pad 6P has a substantially rectangular shape when viewed from the front, and includes a seating portion 6a and a bank portion 6b with reference to FIGS. The seating portion 6a is a central portion of the seat pad 6P in the seat width direction. Further, the bank portion 6b is a portion protruding forward relative to the seating portion 6a, and is disposed on the right side and the left side of the seating portion 6a, respectively, and can support the side portion of the occupant during cornering traveling or the like.

Referring to FIG. 3, the seat cover 6S is a surface material that covers the seat pad 6P and constitutes the seating surface SS of the seat. The seat cover 6S is a fabric (woven fabric, knitted fabric, non-woven fabric) or leather (natural leather, synthetic leather). ). A highly breathable first pad material 7a and a low breathable second pad material 7b can be laminated and integrated in this order on the back surface of the seat cover 6S facing the seat pad 6P. First padding 7a is highly breathable slab urethane, cotton material, fibers can be made of a material such as 3D net body formed by knitting a three-dimensional ^{shape, 200cc / cm 2 · sec~400cc /} cm 2 · sec Preferably, the air permeability is as follows. The second pad material 7b is made of a material such as slab urethane having a low air permeability that is inferior to that of the first pad material 7a. The second pad material 7b has a thickness equal to that of the second pad material 7b. A hole penetrating in the direction can be provided as appropriate.

[Seat heater]
2 and 3, the seat heater 10 includes a planar substrate 12, a non-heat generating portion 14, a pair of through portions 16 and 18, a plurality of heat generating portions 21 to 24, and a plurality of electrodes. It has parts 31r, 32r, 31l, 32l. The base material 12 is a substantially rectangular face material that forms the base of the seat heater 10 as viewed from above, and is elongated in the vertical direction when the seat back is upright as a reference, and the seat portion 6a of the seat pad 6P is It has dimensions that can cover the majority. In addition, as for the upper part side of the base material 12, the left-right side part in a sheet | seat width direction is long compared with the center so that it may make a substantially U shape by a front view. Although the material of the base material 12 is not specifically limited here, it is preferable that it is a material provided with flexibility, such as felt, a cloth, leather, and a soft resin sheet, and it is further a material which is more rigid than the seat cover 6S. preferable.

[Non-heating part / penetrating part]
The non-heat generating portion 14 is a portion that does not generate heat because a heating wire HL described later is not disposed, and in the present embodiment, is a base portion excluding the heat generating portions 21 to 24 described later. A pair of penetration parts (the 1st penetration part 16 and the 2nd penetration part 18) are holes which penetrate base material 12 in the thickness direction in non-heat generating part 14, and insert other members, such as wiring and a duct which are not illustrated. Is possible. The first through portion 16 is a small through hole having a substantially square shape when viewed from the front. The first through portion 16 is formed at the center of the upper portion of the base material 12 as the non-heat generating portion 14 in the seat width direction with the seat back 6 standing up. Is provided. The second through portion 18 is a substantially rectangular through hole that is elongated in the vertical direction of the sheet, and is provided in the lower center of the base material 12 as the non-heat generating portion 14 in the sheet width direction.

[Fever site]
The plurality of heat generating portions (first heat generating portion 21 to fourth heat generating portion 24) are portions that can generate heat when energized with reference to FIG. 2, and a heat generating line HL (detailed later) shown in FIG. Has been. The first heat generating portion 21 and the second heat generating portion 22 are provided in the lower part of the base material 12 so as to be symmetric with respect to the second through portion 18. The first heat generating portion 21 is a substantially rectangular portion that is vertically long, and is provided on the lower right side of the substrate 12. Similarly, the second heat generating portion 22 is a substantially rectangular portion which is vertically long and is provided in the lower left portion of the base material 12. The first heat generating portion 21 and the second heat generating portion 22 are portions that are arranged in a face-to-face manner, for example, on the waist of a seated passenger. The third heat generating portion 23 is a wide belt-like portion that is elongated in the sheet width direction, and is provided at the approximate center of the substrate 12 in the sheet vertical direction. The third heat generating portion 23 is disposed between the first penetrating portion 16 and the second penetrating portion 18 in the vertical direction of the sheet, and is bridged between left and right outer electrode portions 32r and 32l described later. The fourth heat generating portion 24 is a narrow strip-like portion that is elongated in the sheet width direction, and is provided on the base 12. The fourth heat generating portion 24 is disposed above the first through portion 16 and is bridged between left and right outer electrode portions 32r and 32l described later. The right side and the left side of the third heat generating part 23 and the fourth heat generating part 24 are parts that are arranged facing each other on the left and right shoulders of a seated occupant, for example.

  Here, the heating wire HL is a wire that can generate heat when energized with reference to FIG. 3. As this type of heating wire HL, carbon fiber filament, carbon fiber covering yarn, metal (copper, aluminum, etc.), Examples thereof include a wire such as an alloy, and a wire plated with a metal or an alloy. In each of the heat generating portions 21 to 24, the heat generating line HL extends between the electrode portions (31r and 32r, 31l and 32l, 32r and 32l) that extend in the sheet width direction and form a pair described later. ing. In each of the heat generating portions 21 to 24, referring to FIG. 5, the single heat generating wire HL can be arranged while being curved in a zigzag shape in the sheet width direction, and the plurality of heat generating wires HL are arranged in parallel at appropriate intervals. It can also be arranged. A heat generating resin layer containing conductive particles (typically metal particles or alloy particles) may be disposed in each of the heat generating portions 21 to 24.

  The plurality of electrode portions (first inner electrode portion 31r, second inner electrode portion 31l, first outer electrode portion 32r, second outer electrode portion 32l) are respectively shown in the corresponding heat generation portions with reference to FIG. 3 is a belt-like portion capable of supplying power to the heating wire HL. In the seat heater 10, a first outer electrode portion 32r, a first inner electrode portion 31r, a second inner electrode portion 31l, and a second outer electrode portion 32l are arranged in this order at an appropriate interval from right to left. ing. That is, the first outer electrode portion 32 r is disposed on the rightmost side of the substrate 12, and the second outer electrode portion 32 l is disposed on the leftmost side of the substrate 12. Each of these outer electrode portions 32 r and 32 l is relatively long and extends from the lower end of the seat heater 10 to above the fourth heat generating portion 24. The first inner electrode portion 31r is disposed on the left side of the first outer electrode portion 32r and in close proximity to the right end of the second penetration portion 18, and the second inner electrode portion 31l is located on the right side of the second outer electrode portion 32l. The second penetrating portion 18 is disposed close to the left end. These inner electrode portions 31 r and 31 l are relatively short and extend from the lower end of the seat heater 10 to the middle of the second through portion 18.

  And the lower end of each electrode part 31r, 31l, 32r, 32l is electrically connected with the power supply and control part which are not shown in figure via the wiring part W with reference to FIG. At this time, the first outer electrode portion 32r and the second inner electrode portion 31l are positive, and the first inner electrode portion 31r and the second outer electrode portion 32l are negative. The first heat generating portion 21 generates heat when the heating wire HL is energized by supplying power from the paired first outer electrode portion 32r and first inner electrode portion 31r. The second heat generating portion 22 generates heat when the heating wire HL is energized by the power supply from the paired second inner electrode portion 31l and second outer electrode portion 32l. The third heat generating portion 23 and the fourth heat generating portion 24 generate heat when the heat generating wire HL is energized by the power supply from the paired first outer electrode portion 32r and second outer electrode portion 32l. The first heat generating portion 21, the second heat generating portion 22, the third heat generating portion 23, and the fourth heat generating portion 24 can be heated independently by a control unit (not shown), and can also generate heat synchronously. You can also.

[Heat conduction member]
The plurality of heat conducting members 30a to 30d are planar members that transmit the heat of the seat heater 10 toward the seating surface SS with reference to FIGS. 2 and 3, and the first heat transfer portion 31 and the second heat transfer member, respectively. It has a heat transfer part 32 (details of each heat transfer part will be described later). Referring to FIG. 2, the first heat conducting member 30 a is a substantially rectangular surface material that is vertically long, and has substantially the same shape and dimensions as the first heat generating portion 21. Similarly, the second heat conducting member 30b is also a substantially rectangular face material that is vertically long, and is substantially the same shape and the same size as the second heat generating portion 22. The third heat conducting member 30c is a wide strip that is elongated in the sheet width direction, and has substantially the same shape and dimensions as the third heat generating portion 23. The fourth heat conducting member 30d is a narrow strip that is elongated in the sheet width direction, and has substantially the same shape and dimensions as the fourth heat generating portion 24. And since each heat conductive member 30a-30d has a substantially identical basic structure, the detail is demonstrated to the 1st heat conductive member 30a as an example below.

[First heat transfer part (heat transfer part)]
The first heat conducting member 30a is a planar member composed of a first heat transfer portion 31 and a second heat transfer portion 32 described later with reference to FIG. The first heat transfer portion 31 is a planar portion having thermal conductivity corresponding to the heat transfer portion of the present invention, and is disposed on the side facing the seat heater 10 of the first heat transfer member 30a. This first heat transfer portion 31 is easier to transfer the heat of the seat heater 10 toward the surface direction of the first heat conducting member 30a (the left-right direction in FIG. 3) than to transfer the heat of the seat heater 10 toward the seating surface SS. ing. For example, the first heat transfer portion 31 of the present embodiment can be made of a resin material having thermal conductivity, and a plurality of heat conductive fillers shown in FIG. 4 with respect to a base resin (described later in detail). 40 (details will be described later) are continuously arranged so as to be parallel to the surface direction. As will be described later, in the state where the first heat conducting member 30a is disposed facing the seat heater 10, the heat of the seat heater 10 is increased by the heat conducting filler 40 arranged in the surface direction of the first heat transfer portion 31. The first heat conducting member 30a is relatively easy to convey toward the surface direction.

  Here, the method for forming the first heat transfer portion 31 is not particularly limited. For example, after a thin film is formed with a resin serving as a base, a plurality of heat conductive fillers 40 are provided so as to cover the film. A plurality of films can be stacked and fused together to form a material for the first heat transfer site 31. In this material, a base resin layer and a heat conductive filler 40 layer are alternately formed. Is done. And in the layer of the heat conductive filler 40, the several heat conductive filler 40 is continuously arranged so that it may become parallel to the surface direction of a raw material. Here, examples of the resin serving as a base include thermoplastic resins such as polyethylene and polypropylene, and thermoplastic elastomers such as a styrene-butadiene copolymer. The material of the heat conductive filler 40 is not particularly limited as long as it can transfer heat, but boron nitride (BN), graphite, carbon fiber, mica, alumina, aluminum nitride, silicon carbide, silica, zinc oxide, molybdenum disulfide. , Copper, and aluminum. In addition to the flat shape shown in FIG. 4, the shape of the heat conductive filler 40 can be exemplified by a scale shape, a plate shape, a film shape, a cylindrical shape, a prismatic shape, and an elliptical shape. In view of the above, the aspect ratio is preferably 2 or more. And the mixture ratio of the heat conductive filler 40 is set according to the heat conductivity requested | required of the 1st heat transfer site | part 31, and the ratio of the heat conductive filler 40 with respect to resin used as a base typically is 20-80 volume%. Can be set in the range.

[Second heat transfer part]
The second heat transfer portion 32 is a planar portion having thermal conductivity, and is arranged and integrated in a stacked state on the surface facing the seating surface SS of the first heat transfer portion 31 with reference to FIG. ing. The second heat transfer portion 32 is in a direction orthogonal to the surface direction (up and down direction in FIG. 3) rather than transferring the heat of the seat heater 10 toward the surface direction of the first heat conducting member 30a. It is easy to convey toward the seating surface SS. The second heat transfer portion 32 can also be made of a resin material having thermal conductivity, like the first heat transfer portion 31. For example, in the second heat transfer portion 32, the heat conductive filler 40 is continuously arranged in a direction orthogonal to the surface direction with respect to the base resin. As will be described later, in the state where the first heat conductive member 30a is disposed facing the seat heater 10, the sheet heater is provided by the heat conductive fillers 40 arranged in a direction orthogonal to the surface direction of the second heat transfer portion 32. The heat of 10 is relatively easily transmitted toward the seating surface SS side. The method for integrating the first heat transfer portion 31 and the second heat transfer portion 32 is not particularly limited, and examples thereof include methods such as adhesion, fusion, sticking, and stitching.

[Insulation material]
2 and 3, the heat insulating member 50 is a planar member that is less likely to transmit heat than the seat pad 6 </ b> P, and is disposed on the back side of the seat heater 10 facing the seat pad 6 </ b> P. Examples of the material of the heat insulating member 50 include fiber laminates made of synthetic fibers, inorganic fibers, and natural fibers, and sheet bodies, board bodies, and mat bodies made of foamed resin. In the present embodiment, referring to FIG. 2, a plurality of heat insulating members 50 are integrally provided on the back surface side of the left and right sides of the seat heater 10. The method for integrating the heat insulating member 50 and the seat heater 10 is not particularly limited, and examples thereof include methods such as adhesion, fusion, adhesion, and stitching. Thus, in the seat heater 10, with reference to FIG. 3, for example, the heating line HL, the base material 12, and the heat insulating member 50 are laminated in this order in the first heating portion 21. Similarly, with reference to FIG. 2, the heating wire HL, the base material 12, and the heat insulating member 50 are laminated in this order also in the second heat generating portion 22. The heating wire HL, the base material 12, and the heat insulating member 50 are laminated in this order also on the right side and the left side of the third heating part 23 and the fourth heating part 24.

[Sheet heater formation]
Referring to FIG. 2, the plurality of heat conducting members 30 a to 30 d are integrated and placed stably at appropriate positions of the seat heater 10. Here, the integration method is not particularly limited, and examples thereof include adhesion, fusion, adhesion, and stitching. At this time, the first heat conducting member 30a is integrated in a bridging manner between the first inner electrode portion 31r and the first outer electrode portion 32r while being applied to the first heat generating portion 21. Similarly, the second heat conducting member 30b is integrated in a bridging manner between the second inner electrode portion 31l and the second outer electrode portion 32l while being applied to the second heat generating portion 22. Further, the third heat conducting member 30c is integrated in a bridging manner between the left and right outer electrode portions 32r and 32l while being applied to the third heat generating portion 23. The fourth heat conducting member 30d is integrated in a bridging manner between the left and right outer electrode portions 32r and 32l while being applied to the fourth heat generating portion 24.

  Next, the seat heater 10 is fixed to the seat cover 6S together with the heat conducting members 30a to 30d. For example, referring to FIG. 3, a planar adhesive member 60 is attached to the seating side surface of the first heat conducting member 30 a, and the first heat conducting member 30 a and the seat heater 10 are seated together with the seat cover 6 </ b> S by this adhesive member 60. Adhere to the back side of and fix. At this time, in this embodiment, as shown in FIG. 2, since the respective heat conducting members 30 a to 30 d are integrated in advance at appropriate positions of the seat heater 10, the seat heater 10 and the respective heat conducting members 30 a to 30 d are sequentially attached. The arrangement work can be simplified as compared with the above. Then, the seat cover 6S is attached to the seat pad 6P together with the seat heater 10 and the heat conducting members 30a to 30d. For example, the seat heater 10 and the like can be disposed between the seat cover 6S and the seat pad 6P by attaching the seat cover 6S while covering the seat pad 6P that is molded in advance. As another method, the seat cover 6S is disposed in the cavity of the mold of the seat pad 6P together with the seat heater 10 and the heat conducting members 30a to 30d. Then, by foaming and curing the molding material of the seat pad 6P in the cavity, the seat pad 6P can be integrally attached to the back surface side of the seat cover 6S while being molded. At this time, excessive impregnation of the molding material into the seat cover 6S can be suitably avoided by the low-breathable second pad material 7b.

[Use of seat heater]
Referring to FIGS. 3 and 5, the seating surface SS of the seat is heated via each heat conducting member 30 a and the like by energizing the seat heater 10 to generate heat. In this type of configuration, it is desirable that the seating surface SS of the seat can be widely heated in the surface direction by the heat of the seat heater 10 from the viewpoint of efficiently heating the occupant. Therefore, in this embodiment, as shown in FIG. 2, the heat conducting members 30 a to 30 d are disposed on the seating surface SS side of the seat heater 10, and each of the heat conducting members 30 a to 30 d includes a first one shown in FIG. 3. A heat transfer portion 31 and a second heat transfer portion 32 are provided. And in the 1st heat-transfer site | part 31, with reference to FIG. 5, it is made easy to transmit the heat | fever of the seat heater 10 toward the surface direction of the 1st heat conductive member 30a relatively. Further, in the second heat transfer portion 32 arranged on the seating side of the first heat transfer portion 31, heat from the seat heater 10 is relatively easily transmitted toward the seating surface SS side constituted by the seat cover 6S. Yes. For this reason, the heat of the seat heater 10 can be efficiently transmitted to the seating surface SS side by the second heat transfer portion 32 while being transmitted to the surface direction of each heat conducting member 30a and the like by the first heat transfer portion 31. In this way, in this embodiment, by utilizing the orientation of the heat transfer portions 31 and 32, heat can be diffused and radiated only in one desired direction, and the performance as the seat heater 10 can be improved. it can. In addition, when the seat heater 10 is in a non-energized state, the heat generated from the occupant can be released into the seat through the respective heat conducting members 30a to 30d, so that the seat configuration is excellent in comfort. Furthermore, in the present embodiment, referring to FIG. 3, a planar heat insulating member 50 is disposed between the seat pad 6 </ b> P and the seat heater 10. For this reason, the heat insulation member 50 can prevent the heat of the seat heater 10 from escaping to the seat pad 6P as much as possible. In particular, since the heat insulating member 50 is disposed in the heat generating part that heats the occupant's waist and the heat generating part that heats the shoulder of the occupant, the occupant can be efficiently heated.

  Further, in the seat heater 10 described above, a pair of penetration portions 16 and 18 are provided in the non-heat generating portion 14, and other members such as a duct and a wiring (not shown) are appropriately inserted into the penetration portions 16 and 18. be able to. Thus, when providing the penetration parts 16 and 18 from a viewpoint of the usability improvement of a sheet | seat, since the heating wire HL cannot be arrange | positioned in the penetration parts 16 and 18, the dimension of each heat_generation | fever part 21-24 may be restrict | limited. is there. At this time, in the present embodiment, since the heat of each of the heat generating portions 21 to 24 can be efficiently transmitted to the seating surface SS by the corresponding heat conducting members 30a to 30d, the dimensions and the like of each of the heat generating portions 21 to 24 are limited. You can minimize the disadvantages.

  As described above, in the present embodiment, each of the heat conducting members 30a to 30d has the first heat transfer portion 31 that is relatively easy to transfer heat toward the surface direction. While the heat of the seat heater 10 is transmitted to the surface direction of each of the heat conducting members 30a to 30d by the first heat transfer portion 31, the seating surface SS can be widely heated in the surface direction. Each of the heat conducting members 30a to 30d has a second heat transfer portion 32 that is relatively easy to transfer heat toward the seating surface SS. Therefore, the heat of the seat heater 10 can be smoothly transferred to the seating surface SS side by the second heat transfer portion 32 while being transferred in the surface direction by the first heat transfer portion 31. Further, the heat insulating member 50 provided on the back surface of the seat heater 10 can prevent the heat of the seat heater 10 from escaping to the seat pad 6P side as much as possible. Further, in this embodiment, when other members such as a duct and a wiring are to be disposed through the seat heater 10, the other members can be disposed by being inserted through the through portions 16 and 18 of the non-heat generating portion 14. And since the seat heater 10 and each heat conductive member 30a-30d are integrated, the arrangement | positioning operation | work of each heat conductive member 30a-30d can be simplified, and also each heat conductive member 30a-30d is made into a sheet | seat. The heater 10 can be stably disposed at an appropriate position. For this reason, according to the present embodiment, the heat of the seat heater 10 can be efficiently transmitted toward the seating surface SS.

[Modification 1]
Here, the configuration of the heat conducting member can take various configurations in addition to the above-described configuration. For example, in the modification 1, with reference to FIG. 6, the 1st heat conductive member 30a is integrated in the back side of the 1st pad material 7a of the seat cover 6S, and the 2nd pad material 7b is abbreviate | omitted. . Thus, in this modification, since the seat cover 6S and the first heat conducting member 30a are integrated, the arrangement work of the first heat conducting member 30a can be simplified, and the first heat conducting is further performed. The member 30a can be stably arranged at an appropriate position of the seat cover 6S. The seat cover 6S and the first heat conducting member 30a are integrated and attached to the seat heater 10 via the adhesive member 60. When the seat pad 6P is molded and integrated with the seat cover 6S, the first heat conductive member 30a can prevent the molding material from being excessively impregnated instead of the second pad material 7b.

[Modification 2]
Moreover, in the modification 2, with reference to FIG. 7, the 1st heat conductive member 30a is integrated in the state interposed between the seat cover 6S and the 1st pad material 7a. The second pad material 7 b of the seat cover 6 </ b> S is integrated and attached to the seat heater 10 via the adhesive member 60. Thus, also in this modification, since the seat cover 6S and the first heat conducting member 30a are integrated, the arrangement work of the first heat conducting member 30a can be simplified, and the first heat conducting is further performed. The member 30a can be stably arranged at an appropriate position of the seat cover 6S.

[Modification 3]
Moreover, in the modification 3, with reference to FIG.6 and FIG.7, between the seat heater 10 and the heat insulation member 50, the other heat conductive member 33 is arrange | positioned and integrated. The other heat conducting member 33 is composed of a face material having substantially the same configuration as the first heat transfer portion 31 and is heat other than that for transferring the heat of the seat heater 10 toward the seating surface SS. It is easy to convey toward the surface direction of the conductive member 33. In this modification, the heat generated by the heating wire HL is transmitted toward the surface direction of the other heat conducting member 33 on the back surface side of the seat heater 10. In this way, the heat of the heating wire HL is transmitted in the surface direction by the other heat conducting member 33 and then transmitted to the seating surface SS side via the seat heater 10 again.

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. In the present embodiment, the configuration of the seat heater 10 (shape, dimensions, arrangement position, number of arrangements, constituent members, etc.) is exemplified, but the configuration of the seat heater is not intended to be limited. For example, the seat heater can be provided with a plurality or a single heat generating portion, and the heat generating portion can be provided over substantially the entire surface of the seat heater. Further, the seat heater can be provided with a plurality or a single through portion at an appropriate position, and the through portion can be omitted. In addition, a penetration part can also be comprised in the notch part which notched the periphery of the seat heater other than the through-hole. Moreover, each electrode part can be used as either a positive electrode or a negative electrode according to a sheet | seat structure.

  Moreover, in this embodiment, although the structure (shape, dimension, arrangement | positioning position, the number of arrangement | positioning, the structure of each heat transfer site | part, etc.) of each heat conductive member 30a-30d was illustrated, in the meaning which limits the structure of these members. Absent. For example, each heat conducting member may be larger or smaller than the corresponding heat transfer portion, but it is desirable that each heat conducting member has a size that can cover the heat generation wires arranged in the heat generation portion. The heat conducting member can be provided on at least one of the seating side surface and the back surface of the seat heater. Further, the heat conducting member can be integrated with at least one of the seat heater and the seat cover, and can be configured not to be integrated with the seat heater and the seat cover. Further, the heat conducting member can be provided so as to cover at least a part of the non-heat generating portion (penetrating portion), and in this case, the seat heater surface also faces the non-heat generating portion (penetrating portion). Can be communicated.

  Moreover, in this embodiment, although the structure of the 1st heat transfer site | part 31 and the 2nd heat transfer site | part 32 was illustrated, it is not the meaning which limits the structure of these each site | part. For example, although the example which provides a 2nd heat transfer part only in the surface by the side of the seating surface of a 1st heat transfer part was demonstrated, this 2nd heat transfer part is the seat side and seat heater side of a 1st heat transfer part. It can be arranged in a laminated state on at least one of the surfaces. Moreover, a 2nd heat-transfer site | part can also be abbreviate | omitted from a heat conductive member. Moreover, the 1st heat-transfer site | part should just be made easy to convey the heat | fever of a seat heater toward the surface direction of a heat conductive member relatively. For example, in the first heat transfer region, in addition to the case where the heat conductive filler is disposed parallel to the surface direction, the first heat transfer region may be disposed slightly obliquely. Further, in the first heat transfer portion, the heat conductive fillers can be arranged in a lattice form on the top, bottom, left and right in FIG. 3, and in this case, a relatively large number of heat conductive fillers are arranged in the left and right direction. Similarly, the second heat transfer portion may be configured so that the heat of the seat heater is relatively easily transferred toward the seating surface.

  Further, in the present embodiment, the seat back 6 has been described as an example, but the configuration of the present embodiment can be applied to various seat components such as the seat cushion 4, the headrest 8, and the armrest. The configuration of the present embodiment can be applied to all vehicle seats such as vehicles, airplanes, and trains.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 6S Seat Cover 6P Seat Pad 6F Seat Frame 6a Seating Part 6b Bank Part 7a First Pad Material 7b Second Pad Material 10 Seat Heater 12 Base Material 14 Non-Heat Generation Part 16 First Penetration part 18 2nd penetration part 21-24 Heat generation part 31r, 31l Inner electrode part 32r, 32l Outer electrode part 30a-30d Heat conduction member 31 1st heat transfer part (heat transfer part of the present invention)
32 Second heat transfer part 33 Other heat conduction member 40 Heat conduction filler 50 Heat insulation member 60 Adhesive member HL Heating wire W Wiring part

Claims (7)

In a vehicle seat comprising a seat cover that constitutes a seating surface of the seat, a seat heater disposed on the back side of the seat cover, and a planar heat conducting member that transmits heat of the seat heater,
A vehicle seat in which a heat transfer portion provided in the heat conductive member is more easily transmitted in a surface direction of the heat conductive member than in a direction of transferring heat of the seat heater toward the seating surface.   The heat conducting member is disposed in a laminated state on at least one of a first heat transfer portion as the heat transfer portion, a surface on the seating surface side of the first heat transfer portion, and a surface on the seat heater side. A second heat transfer portion, and the second heat transfer portion makes it easier to transfer the heat of the seat heater toward the seating surface than in the direction of the surface of the heat conducting member. Item 2. The vehicle seat according to Item 1.   The vehicle seat according to claim 2, wherein the second heat transfer portion is provided only on a seating surface side surface of the first heat transfer portion.   The vehicle seat has a seat pad that is arranged on the back side of the seat cover and elastically supports an occupant, and the seat heater is arranged between the seat pad and the seat cover, The vehicle seat according to any one of claims 1 to 3, wherein a heat insulating member that is less likely to transfer heat than the seat pad is disposed between the seat pad and the seat heater.   The non-heat generating part which does not generate | occur | produce heat is provided in the said sheet heater, The penetration part which penetrates the said sheet heater in the thickness direction is provided in the said non-heat generating part. The vehicle seat according to the item.   The vehicle seat according to any one of claims 1 to 5, wherein the heat conducting member is integrated with the seat heater. The vehicle seat according to any one of claims 1 to 6, wherein the heat conducting member is integrated with the seat cover.

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