WO2022244506A1

WO2022244506A1 - Vehicle seat

Info

Publication number: WO2022244506A1
Application number: PCT/JP2022/015895
Authority: WO
Inventors: 広宣村上; 周治伊藤; 健志田中
Original assignee: 株式会社デンソー
Priority date: 2021-05-19
Filing date: 2022-03-30
Publication date: 2022-11-24
Also published as: JP2022178194A

Abstract

This vehicle seat is constructed of a resin molded body that supports the load of a seated occupant, and the vehicle seat comprises: a seat pad (15) having a front surface (17), which is the surface on the seated occupant side, and a rear surface (18), which is the surface on the opposite side to the seated occupant side, and also having a plurality of ventilation holes (22) penetrating from the front surface to the rear surface, to allow wind that is generated by operating a blower to flow therethrough; and a cover (16) which covers the surface of the seat pad and has air permeability. In the surface of the seat pad, one or more long grooves (23) are formed which are linearly arranged and connect two or more of the plurality of ventilation holes to each other.

Description

vehicle seat

Cross-references to related applications

This application is based on Japanese Patent Application No. 2021-84797 filed on May 19, 2021, the contents of which are incorporated herein by reference.

The present disclosure relates to a vehicle seat used in a vehicle seat air conditioner.

Patent Document 1 discloses a vehicle seat air conditioner. This seat air conditioner includes a seat and a blower. The seat is provided with a plurality of ventilation holes. This seat air conditioner draws in or blows out air from a plurality of ventilation holes by operating an air blower, thereby improving the comfort of an occupant seated in the seat.

JP 2019-38461 A

All or part of the plurality of ventilation holes are blocked at a portion of the seat that is in surface contact with the body of the occupant. Therefore, no wind flows between the occupant's body and the seat, or less wind flows between the occupant's body and the seat. As a result, the passenger feels hot, stuffy, and uncomfortable.
An object of the present disclosure is to provide a vehicle seat that is used in a vehicle seat air-conditioning system and that can suppress the occupant's hot and stuffy feeling and improve the comfort of the occupant. do.

In order to achieve the above object, according to one aspect of the present disclosure,
The vehicle seat that is applied to the vehicle seat air conditioner and the passenger sits on,
It is composed of a resin molded body that supports the load of a seated occupant, has a front surface that is the surface on the side of the seated occupant, and a back surface that is the surface on the opposite side to the occupant. a seat pad formed with a plurality of ventilation holes through which air formed by operation flows;
Covering the surface of the seat pad and having an air permeable skin,
The surface of the seat pad is formed with one or more surface grooves linearly arranged to connect two or more of the plurality of ventilation holes.

According to this, since the surface grooves are formed on the surface of the seat pad, when the occupant's body is in contact with the seat so as to block the plurality of ventilation holes, the occupant's body faces the surface grooves. An air layer is formed between the portion where the sheet is applied and the sheet. As a result, it is possible to suppress the occupant's feeling of heat and stuffiness compared to the case where the front groove is not formed.

Also, unlike the present disclosure, when one or more surface grooves communicate with only one ventilation hole, when the occupant's body is in contact with the seat so as to block the ventilation hole to which the surface grooves communicate, Wind does not flow in the groove. Alternatively, less wind flows through the surface groove.

On the other hand, according to the present disclosure, since the surface groove connects two or more ventilation holes, if the seating posture of the occupant changes, etc., one of the two or more ventilation holes connected by the surface groove When any one or more ventilation holes are open, airflow can be generated in the surface groove. Alternatively, the wind flowing through the surface groove can be increased. As a result, it is possible to suppress the occupant's feeling of heat and stuffiness.

It should be noted that the reference numerals in parentheses attached to each component etc. indicate an example of the correspondence relationship between the component etc. and the specific component etc. described in the embodiment described later.

1 is a front view of a vehicle seat air conditioner according to a first embodiment; FIG. FIG. 2 is a sectional view taken along line II-II of FIG. 1; FIG. 2 is a diagram showing a state in which the seat back cover is removed in the seat air conditioner of FIG. 1 ; 4 is an enlarged view of part IV of FIG. 3; FIG. FIG. 5 is a perspective view of a V portion of FIG. 4; FIG. 5 is a sectional view taken along the line VI-VI of FIG. 4; FIG. 7 is a cross-sectional view of the vehicle seat air conditioner of Comparative Example 1 when the passenger is in a normal seating posture; FIG. 10 is a cross-sectional view of the vehicle seat air-conditioning system of Comparative Example 1 when the occupant is in an oblique sitting posture; FIG. 11 is a cross-sectional view of the vehicle seat air-conditioning apparatus of Comparative Example 2 when the passenger is in the normal seating posture; FIG. 11 is a cross-sectional view of the vehicle seat air-conditioning system of Comparative Example 2 when the occupant is in an oblique sitting posture; FIG. 2 is a sectional view of the vehicle seat air conditioner of the first embodiment when the passenger is in a normal sitting posture; 1 is a cross-sectional view of the vehicle seat air-conditioning apparatus of the first embodiment when a passenger is seated in an oblique posture; FIG. 10 is an enlarged view of the surface of the seat pad in which the center side surface groove is formed in the vehicle seat air conditioner of Comparative Example 3. FIG. FIG. 9 is an enlarged view of the surface of a seat pad in which a central side surface groove is formed in the vehicle seat air conditioner of the second embodiment; FIG. 7 is a cross-sectional view of the vehicle seat air conditioner of the second embodiment when the occupant is in a normal sitting posture; FIG. 7 is a cross-sectional view of the vehicle seat air conditioner of the second embodiment when the occupant is in an oblique sitting posture; FIG. 11 is an enlarged view of the surface of a seat pad in which a central side surface groove is formed in the vehicle seat air conditioner of the third embodiment; FIG. 11 is an enlarged view of the surface of a seat pad in which a central side surface groove is formed in the vehicle seat air conditioner of the fourth embodiment; FIG. 11 is an enlarged view of the surface of a seat pad having a center-side surface groove formed in the vehicle seat air conditioner of the fifth embodiment; FIG. 12 is a plan view showing the vehicle seat air-conditioning apparatus of the sixth embodiment, showing a state in which the outer skin of the seat cushion is removed; FIG. 11 is a plan view showing a vehicle seat air-conditioning apparatus according to a seventh embodiment, showing a state in which an outer skin of a seat cushion is removed; FIG. 4 is a diagram showing the surface of a seat pad of a seat cushion used in tests conducted by the inventors; FIG. 10 is a cross-sectional view of a central side surface groove in another embodiment; FIG. 10 is a cross-sectional view of a central side surface groove in another embodiment; FIG. 10 is a cross-sectional view of a central side surface groove in another embodiment;

Hereinafter, embodiments of the present disclosure will be described based on the drawings. In addition, in each of the following embodiments, portions that are the same or equivalent to each other will be described with the same reference numerals.

(First embodiment)
A vehicle seat air conditioner using the vehicle seat of the present disclosure will be described. As shown in FIGS. 1 and 2, a vehicle seat air conditioner 1 includes a seat 3 on which an occupant 2 is seated, and a blower 4 that forms an air flow. A vertical direction D1, a left-right direction (that is, a lateral direction) D2, and a front-rear direction D3 shown in FIGS. The vertical direction D1 of the seat 3 coincides with the vertical direction of the vehicle. The lateral direction D2 of the seat 3 coincides with the lateral direction of the vehicle. The longitudinal direction D3 of the seat 3 coincides with the longitudinal direction of the vehicle.

The seat 3 is applied to the vehicle seat air conditioner 1 and is a vehicle seat on which the passenger sits. The seat 3 is installed inside the vehicle. The seat 3 includes a seat back 10 and a seat cushion 11. - 特許庁The seat back 10 supports the back of the occupant 2 seated on the seat 3 . The vertical direction D1 of the seat back 10 when the seat back 10 is parallel to the vertical direction D1 is the longitudinal direction of the seat back 10 . The seat cushion 11 supports the buttocks of the occupant 2 seated on the seat 3 .

The seat back 10 has a central portion 12 and a pair of side supports 13,14. The center portion 12 is a portion of the seatback 10 located on the center side in the lateral direction D2 of the seatback 10 . The central portion 12 faces the back of the occupant 2 seated on the seat 3 in the thickness direction of the seat back 10 and supports the back of the occupant 2 from behind. The central portion 12 is also called a backrest surface or a seat surface. The central portion 12 includes an upper central portion 121 positioned on the upper side of the central portion 12 and a lower central portion 122 positioned below the upper central portion 121 of the central portion 12 .

The side supports 13 and 14 are portions of the seatback 10 located on both sides of the seatback 10 in the lateral direction D2 with respect to the central portion 12 . The side supports 13 and 14 support the back of the occupant 2 seated on the seat 3 from the sides.

The seat back 10 includes a seat pad 15 and an outer skin 16. The seat pad 15 is a cushion material that supports the load of the seated occupant 2 . The seat pad 15 is made of a flexible foamed polyurethane resin molding. The seat pad 15 has roles such as maintaining the posture of the occupant 2, distributing body pressure, and suppressing vibration. In addition, in the present embodiment, the seat pad 15 is composed of one type of foamed polyurethane resin, but may be composed of two or more types of foamed polyurethane resins having different softnesses. Also, the seat pad 15 may be made of a foamed resin molding other than foamed polyurethane resin.

As shown in FIG. 2, the seat pad 15 includes a front surface 17, which is the surface of the seat pad 15 facing the occupant, a back surface 18, which is the surface of the seat pad 15 opposite to the occupant, and lateral surfaces of the seat pad. It has a side surface 19 which is a surface. The skin 16 covers the surface 17 and side surfaces 19 of the seat pad 15 . The skin 16 is made of fabric, leather, or the like. The skin 16 has a plurality of fine holes (not shown) called perforations, and has air permeability. The diameter of one hole is, for example, about 1 mm.

As shown in FIG. 3 , the seat pad 15 has a central pad portion 151 and a pair of

side pad portions

152 and 153 . The central pad portion 151 constitutes the central portion 12 of the seatback 10 . The center pad portion 151 is a portion of the seat pad 15 located on the center side of the seat back 10 in the lateral direction D2. The central pad portion 151 includes an upper pad portion 151a and a lower pad portion 151b. The upper pad portion 151a is a portion of the central pad portion 151 located on the upper side. The lower pad portion 151b is a portion of the central pad portion 151 located below the upper pad portion 151a. The

side pad portions

152 , 153 constitute the side supports 13 , 14 of the seat back 10 . The

side pad portions

152 and 153 are portions of the seat pad 15 located on both sides of the seat back 10 with respect to the central pad portion 151 in the lateral direction D2.

A plurality of hanging grooves 20 are formed on the surface 17 of the seat pad 15 . The plurality of suspension grooves 20 are grooves for suspending and supporting the outer skin 16 . A plurality of hanging portions (not shown) are formed in the outer skin 16 . Each hanging portion of the upholstery 16 is inserted into each hanging groove 20 and fixed to a wire 21 embedded in the seat pad 15 .

The plurality of hanging grooves 20 include a first vertical hanging groove 201 , a second vertical hanging groove 202 , a horizontal hanging groove 203 , a third vertical hanging groove 204 and a fourth vertical hanging groove 205 . The first vertical hanging groove 201 is arranged at the boundary between the lower pad portion 151b and the right side pad portion 152 on the surface 17 of the seat pad 15 and extends in the longitudinal direction of the seat back 10 . The second vertical hanging groove 202 is arranged at the boundary between the lower pad portion 151b and the left side pad portion 153 on the surface 17 of the seat pad 15 and extends in the longitudinal direction of the seat back 10 . The lateral hanging groove 203 is arranged on the surface 17 of the seat pad 15 at the boundary between the upper pad portion 151a and the lower pad portion 151b, and extends in the lateral direction D2 of the seat back 10. As shown in FIG. The third vertical hanging groove 204 is arranged at the boundary between the upper pad portion 151a and the right side pad portion 152 on the surface 17 of the seat pad 15 and extends in the longitudinal direction of the seat back 10 . The fourth vertical hanging groove 205 is arranged in the boundary portion between the upper pad portion 151 a and the left side pad portion 153 on the surface 17 of the seat pad 15 and extends in the longitudinal direction of the seat back 10 .

As shown in FIG. 3, a central pad portion 151 of the seat pad 15 has a plurality of ventilation holes 22 formed therein. The plurality of ventilation holes 22 pass through the seat pad 15 from the surface 17 to the back surface 18 of the seat pad 15, as shown in FIG. Air generated by the operation of the blower 4 flows through the plurality of ventilation holes 22 .

As shown in FIG. 3, one of the plurality of ventilation holes 22 is formed in the upper pad portion 151a. Eight of the plurality of ventilation holes 22 are formed in the upper region of the lower pad portion 151b. The upper region of the lower pad portion 151b is the central region of the regions obtained by vertically dividing the central pad portion 151 into three.

As shown in FIGS. 3 and 4, a plurality of central side surface grooves 23 and a plurality of outer side surface grooves 24 are formed on the surface 17 of the lower pad portion 151b of the seat pad 15. As shown in FIGS. The plurality of central side surface grooves 23 are surface grooves arranged in a line connecting two or more ventilation holes 22 among the plurality of ventilation holes 22 . Each of the plurality of central side surface grooves 23 linearly extends and spreads in the direction along the surface 17 . The plurality of center-side front grooves 23 are arranged at least in the center-side portion of the portions obtained by dividing the lower pad portion 151b into three equal parts in the lateral direction D2. That is, the plurality of center-side front grooves 23 are arranged at least in a portion of the lower pad portion 151b that faces the center of the back of the seated occupant 2 .

The plurality of outer surface grooves 24 are arranged on both end side portions of the portions obtained by dividing the lower pad portion 151b into three equal parts in the lateral direction D2. Each of the plurality of outer surface grooves 24 linearly extends from each of the corresponding plurality of ventilation holes 22 toward the side away from the central portion of the seat pad 15 in the lateral direction D2. Each of the plurality of outer surface grooves 24 linearly extends and spreads in the direction along the surface 17 .

As shown in FIGS. 5 and 6, in each of the plurality of central side surface grooves 23 and the plurality of outer side surface grooves 24, the cross-sectional shape of the surface grooves in the cross section perpendicular to the direction in which the surface grooves extend is rectangular. is a shape excluding one side. The depth of each of the plurality of central side surface grooves 23 and the plurality of outer side surface grooves 24 is smaller than the thickness of the lower pad portion 151b, for example, about 5 to 10 mm. Therefore, each of the plurality of central side surface grooves 23 and the plurality of outer side surface grooves 24 does not reach the back surface 18 of the lower pad portion 151b.

The arrangement of the plurality of ventilation holes 22, the plurality of central side surface grooves 23 and the plurality of outer side surface grooves 24 will be described in more detail. As shown in FIG. 4, the first ventilation hole 22a, the second ventilation hole 22b, and the third ventilation hole 22c of the eight ventilation holes 22 are located in the right region of the lower pad portion 151b in the lateral direction D2 from above. are arranged in order. Of the eight ventilation holes 22, the fourth ventilation hole 22d and the fifth ventilation hole 22e are arranged in order from the top in the central region of the lower pad portion 151b in the lateral direction D2. Of the eight ventilation holes 22, the sixth ventilation hole 22f, the seventh ventilation hole 22g, and the eighth ventilation hole 22h are arranged in order from the top in the left region of the lower pad portion 151b in the lateral direction D2. The area on the right side is the area on the right side of the parts obtained by dividing the lower pad portion 151b into three equal parts in the lateral direction D2. The area on the central side is an area on the central side of the parts obtained by dividing the lower pad portion 151b into three equal parts in the horizontal direction D2. The left area is the area on the left side of the parts obtained by dividing the lower pad portion 151b into three equal parts in the horizontal direction D2.

As shown in FIG. 4, the plurality of central side surface grooves 23 include a plurality of horizontal straight portions 23a to 23e extending linearly in the horizontal direction D2 and a plurality of vertical straight portions 23f and 23g extending linearly in the vertical direction. including. Each of the horizontal straight portions 23a to 23e connects the ventilation holes 22 located on one side and the other side in the horizontal direction D2. Each of the plurality of vertical straight portions 23f and 23g intersects a plurality of horizontal straight portions at different positions in the vertical direction among the plurality of horizontal straight portions 23a to 23e, and connects the horizontal straight portions at different positions in the vertical direction. I'm in.

Specifically, the plurality of horizontal straight portions 23a to 23e include a first horizontal straight portion 23a, a second horizontal straight portion 23b, a third horizontal straight portion 23c, a fourth horizontal straight portion 23d, and a fifth horizontal straight portion 23e. include. The first horizontal straight portion 23a connects the first ventilation hole 22a and the sixth ventilation hole 22f, which are located at the same position in the vertical direction. The second horizontal straight portion 23b connects the second ventilation hole 22b and the fourth ventilation hole 22d located at the same position in the vertical direction. The third horizontal straight portion 23c connects the third ventilation hole 22c and the fifth ventilation hole 22e located at the same position in the vertical direction. The fourth horizontal straight portion 23d connects the fourth ventilation hole 22d and the seventh ventilation hole 22g located at the same position in the vertical direction. The fifth horizontal straight portion 23e connects the fifth ventilation hole 22e and the eighth ventilation hole 22h located at the same position in the vertical direction.

The plurality of vertical straight portions 23f and 23g include a first vertical straight portion 23f and a second vertical straight portion 23g. The first vertical straight portion 23f extends horizontally between the first to third ventilation holes 22a to 22c located on the right side in the horizontal direction D2 and the fourth and fifth ventilation holes 22d and 22e located on the center side in the horizontal direction D2. It crosses each of the first to third horizontal straight lines 23a, 23b, and 23c at a position between them in the direction D2. The second vertical straight portion 23g extends in the horizontal direction between the fourth and fifth ventilation holes 22d and 22e located on the center side in the horizontal direction D2 and the sixth to eighth ventilation holes 22f to 22h located on the left side in the horizontal direction D2. At a position between D2, it crosses each of the first horizontal straight portion 23a, the fourth horizontal straight portion 23d, and the fifth horizontal straight portion 23e.

In this way, the plurality of horizontal straight portions 23a to 23e and the plurality of vertical straight portions 23f and 23g connect the plurality of ventilation holes 22 at different positions in the vertical direction D1 and the horizontal direction D2. In the present embodiment, each of the fourth ventilation hole 22d and the fifth ventilation hole 22e corresponds to a central ventilation hole arranged on the central side in the lateral direction D2 of the central pad portion. Each of the first to third ventilation holes 22a to 22c and the sixth to eighth ventilation holes 22f to 22h is one outer ventilation hole arranged outside the central ventilation hole in the lateral direction D2 in the central pad portion. corresponds to The plurality of horizontal straight portions 23a to 23e and the plurality of vertical straight portions 23f and 23g correspond to linear portions connecting the central ventilation holes and the outer ventilation holes.

As shown in FIG. 4 , each of the plurality of outer surface grooves 24 communicates with the corresponding ventilation hole 22 among the plurality of ventilation holes 22 . Specifically, each of the plurality of outer surface grooves 24 communicates with each of the first to third ventilation holes 22a to 22c and the sixth to eighth ventilation holes 22f to 22h located on both left and right sides in the lateral direction D2. ing.

Each of the plurality of outer surface grooves 24 extends outward from the corresponding ventilation hole 22 in the lateral direction D2 from the center side of the central pad portion 151 in the lateral direction D2. Specifically, the plurality of outer surface grooves 24 include first to sixth grooves 24a to 24f.

The first groove 24a communicates with the first ventilation hole 22a. The first groove 24a extends obliquely upward from the first ventilation hole 22a toward the right side pad portion 152 in the lateral direction D2. The second groove 24b communicates with the second ventilation hole 22b. The second groove 24b extends in the horizontal direction D2 from the second ventilation hole 22b to the first vertical suspension groove 201. As shown in FIG. The second groove 24 b communicates with the first vertical suspension groove 201 and connects the second ventilation hole 22 b and the first vertical suspension groove 201 . The third groove 24c communicates with the third ventilation hole 22c. The third groove 24c extends in the horizontal direction D2 from the third ventilation hole 22c to the first vertical hanging groove 201. As shown in FIG. The third groove 24 c communicates with the first vertical suspension groove 201 and connects the third ventilation hole 22 c and the first vertical suspension groove 201 .

The fourth groove 24d communicates with the sixth ventilation hole 22f. The fourth groove 24d extends obliquely upward from the sixth ventilation hole 22f toward the left side pad portion 153 in the lateral direction D2. The fifth groove 24e communicates with the seventh ventilation hole 22g. The fifth groove 24e extends in the horizontal direction D2 from the seventh ventilation hole 22g to the second vertical hanging groove 202. As shown in FIG. The fifth groove 24 e communicates with the second vertical suspension groove 202 and connects the seventh ventilation hole 22 g and the second vertical suspension groove 202 . The sixth groove 24f communicates with the eighth ventilation hole 22h. The sixth groove 24f extends in the horizontal direction D2 from the eighth ventilation hole 22h to the second vertical hanging groove 202. As shown in FIG. The sixth groove 24f communicates with the second vertical suspension groove 202, and connects the eighth ventilation hole 22h and the second vertical suspension groove 202. As shown in FIG.

As shown in FIGS. 1 and 2, a back groove 25 is formed on the back surface 18 of the seat pad 15 . The back grooves 25 form ventilation paths between the plurality of ventilation holes 22 and the blower 4 . Specifically, the back groove 25 has three grooves 25a to 25c extending substantially vertically and a substantially rectangular space 25d communicating with the three grooves 25a to 25c. Three grooves 25 a to 25 c extending substantially vertically communicate with the plurality of ventilation holes 22 . Therefore, the substantially rectangular space 25d also communicates with the plurality of ventilation holes 22 through the three grooves 25a to 25c.

A back cover 26 is provided at a portion corresponding to the back groove 25 on the back surface 18 side of the seat pad 15 . The back cover 26 is made of, for example, hard felt, polypropylene, resin such as POM, or the like. The back cover 26 is attached to the back surface 18 of the seat pad 15 so as to block the open surface of the back groove 25. - 特許庁A blower 4 is provided behind the back cover 26 . The rear cover 26 is provided with an opening hole 27 at a position corresponding to the air suction port of the blower 4 .

A back frame 28 is provided behind the blower 4 . An outer edge of the back frame 28 is connected to the seat pad 15 . A seatback space 29 is formed between the back cover 26 and the back frame 28 .

The blower 4 is arranged in the seat back space 29. The blower 4 is a fan that generates an airflow by rotating an impeller driven by an electric motor (not shown). A centrifugal fan is used as the impeller. An axial fan, a diagonal fan, or a turbo fan may be used as the impeller. The blower 4 is configured to blow the air sucked from the perforations of the upholstery 16 through the plurality of ventilation holes 22 and the back grooves 25 into the seat back space 29 .

Next, the vehicle seat air conditioner 1 of this embodiment and the vehicle

seat air conditioners

1A and 1B of Comparative Examples 1 and 2 will be compared.

7 and 8, the seat pad 15 of the vehicle seat air-conditioning apparatus 1A of Comparative Example 1 does not have the central side surface groove 23 and the outer side surface groove 24 formed on the surface 17 of the seat pad 15. It is different from the vehicle seat air conditioner 1 in the form. Other configurations of the vehicle seat air conditioner 1A of Comparative Example 1 are the same as those of the vehicle seat air conditioner 1 of the present embodiment.

In the vehicle seat air conditioner 1A of Comparative Example 1, as shown in FIG. 7, when the passenger 2 is in the normal sitting posture, the plurality of ventilation holes 22 are all blocked by the back of the passenger 2. Therefore, when the blower 4 is activated, no wind flows between the back of the occupant 2 and the seat back 10, or less wind flows between the back of the occupant 2 and the seat back 10. - 特許庁As a result, the occupant 2 feels hot, stuffy, and uncomfortable. The normal posture here refers to a state in which the body of the occupant 2 faces forward and the back of the seated occupant 2 is parallel to the surface of the central portion 12 of the seat back 10, as indicated by the arrow A1. It is a state in which a load is applied to the central portion 12 and surface contact is made. That is, the normal posture is a state in which the entire back of the occupant 2 is in close contact with the surface of the central portion 12 of the seat back 10 .

Further, in the vehicle seat air-conditioning system 1A of Comparative Example 1, when the air blower 4 is operated, as shown in FIG. In addition, air is drawn in from the ventilation holes 22 that are not blocked by the back of the passenger 2 among the plurality of ventilation holes 22 . As a result, air flows between the back of the occupant 2 and the seat back 10 . The oblique posture referred to here means that the body of the occupant 2 faces obliquely forward as indicated by the arrow A2, and the part of the back of the seated occupant 2 on one side in the lateral direction D2 is aligned with the seat back 10. It means a state away from the central portion 12 .

As shown in FIGS. 9 and 10, the vehicle seat air conditioner 1B of Comparative Example 2 is similar to the vehicle seat air conditioner of the present embodiment in that the surface 17 of the seat pad 15 is not formed with the center side surface groove 23. Differs from device 1. Other configurations of the vehicle seat air conditioner 1B of Comparative Example 2 are the same as those of the vehicle seat air conditioner 1 of the present embodiment.

In the vehicle seat air conditioner 1B of Comparative Example 2, a plurality of outer surface grooves 24 are formed on the surface 17 of the central pad portion 151 of the seat pad 15 . As shown in FIG. 9 , when the occupant 2 is in the normal sitting posture, the ventilation holes 22 located on both end sides in the lateral direction D2 of the central pad portion 151 are arranged through a plurality of outer surface grooves 24 to provide air to the vehicle interior. Communicate with space. Therefore, when the occupant 2 is in the normal sitting posture, when the blower 4 is activated, the air in the vehicle interior is blown into the perforations of the outer skin 16, the outer surface grooves 24, and the ventilation holes 22 as indicated by the dashed arrows in FIG. , the back groove 25, the blower 4, and the seat back space 29 in this order. As a result, air flows between the seat back 10 and the portions of the back of the occupant 2 on both end sides in the lateral direction D2.

However, the central ventilation hole 22 located on the central side in the lateral direction D2 of the central pad portion 151 is such that the central portion of the back of the occupant 2, which is the region on the central side in the lateral direction D2, is on the surface of the seat back 10. By closely contacting, it is blocked by the center of the back. That is, the central portion of the back comes into surface contact with the surface of the seat back 10 so as to block the central ventilation holes 22 located opposite the central portion of the back. Therefore, no wind flows between the center of the back of the occupant 2 and the seat back 10 . Alternatively, less wind flows between the center of the back and the seat back 10 . As a result, the occupant 2 feels hot, stuffy, and uncomfortable.

Further, in the vehicle seat air-conditioning apparatus 1B of Comparative Example 2, when the passenger 2 changes from the normal posture to the oblique posture as shown in FIG. Air is sucked from the central ventilation hole 22 which is not blocked at the back of the. As a result, air flows between the center of the back of the occupant 2 and the seat back 10 . At this time, the wind flows through the outer surface grooves 24 , and therefore more wind flows between the back of the occupant 2 and the seat back 10 than in the vehicle seat air-conditioning system 1</b>A of the first comparative example.

In the vehicle seat air conditioner 1 of the present embodiment, as shown in FIGS. A groove 23 is formed. The plurality of central side surface grooves 23 are arranged in a linear manner connecting the plurality of ventilation holes 22 with each other. The plurality of central side surface grooves 23 are arranged at least in a portion of the seat pad 15 facing the center of the back of the seated occupant 2 .

As shown in FIG. 11, when the occupant 2 is in the normal sitting posture, similarly to the vehicle seat air conditioner 1B of the comparative example 2, when the blower 4 is activated, the air in the vehicle compartment is expanded as indicated by the dashed arrow. , through the outer surface grooves 24 and through the plurality of ventilation holes 22 located at both ends of the central pad portion 151 in the lateral direction D2. Further, unlike the vehicle seat air conditioner 1</b>B of Comparative Example 2, an air layer is formed between the central portion of the back portion and the seat pad 15 by the central surface groove 23 . As a result, when the occupant 2 is in the normal sitting posture, the occupant's feeling of heat and stuffiness can be suppressed as compared with the vehicle

seat air conditioners

1A and 1B of the first and second comparative examples.

In the vehicle seat air-conditioning system 1 of the present embodiment, when the air blower 4 is activated and the seating posture of the occupant 2 changes from the normal posture to the oblique posture as shown in FIG. 12, the central ventilation hole 22 is opened. be. Therefore, air is sucked from the central ventilation hole 22 and flows between the center of the back of the occupant 2 and the seat back 10 as indicated by the dashed arrows. At this time, the wind toward the central ventilation hole 22 flows through the central front groove 23 . Therefore, as compared with the vehicle

seat air conditioners

1A and 1B of Comparative Examples 1 and 2, more wind flows between the center of the back of the occupant 2 and the seat back 10 . As a result, it is possible to suppress the occupant's feeling of heat and stuffiness.

In particular, in the vehicle seat air-conditioning device 1 of the present embodiment, the plurality of center side surface grooves 23 are formed by the plurality of horizontal straight portions 23a to 23e and the plurality of vertical straight portions 23f and 23g in the vertical and horizontal directions D2. The plurality of left ventilation holes 22, the plurality of center side ventilation holes 22, and the plurality of right side ventilation holes 22 at different positions are connected to each other. Therefore, no matter how the occupant 2 seated on the seat 3 changes his or her seating posture, one or more of the plurality of ventilation holes 22 are opened, so that the plurality of central side surface grooves 23 are opened. , can form a wind flow toward the open ventilation holes 22 . As a result, compared to the vehicle

seat air conditioners

1A and 1B of Comparative Examples 1 and 2, the air flowing between the back of the occupant 2 and the seat 3 toward the open ventilation holes 22 can be increased. Therefore, it is possible to suppress the occupant's feeling of heat and stuffiness.

Next, the plurality of central side surface grooves 23 of this embodiment and the plurality of central side surface grooves 23A of Comparative Example 3 shown in FIG. 13 will be compared. Unlike the plurality of central side surface grooves 23 of the present embodiment, the plurality of central side surface grooves 23A of Comparative Example 3 are not arranged so as to connect two or more ventilation holes, and only one ventilation hole 22 is provided. communicates with That is, one end of each of the plurality of center-side front grooves 23A of Comparative Example 3 communicates with one ventilation hole 22, but the other end does not communicate with a ventilation hole 22 other than the ventilation hole 22. .

Therefore, even if the seating posture of the occupant 2 changes from the normal posture to the oblique posture, the occupant's back is in contact with the surface of the seat back 10 so as to close the ventilation holes 22 communicating with the plurality of central side surface grooves 23A. When there is, the wind does not flow through the plurality of central side surface grooves 23A. Alternatively, less wind flows through the plurality of central side surface grooves 23A.

On the other hand, the plurality of central side surface grooves 23 of the present embodiment connect two or more ventilation holes 22 to each other, as shown in FIG. Therefore, when the seating posture of the occupant 2 changes from the normal posture to the oblique posture, any one or more of the two or more ventilation holes 22 connected by the plurality of central side surface grooves 23 are opened. When opened, air can flow through the plurality of central side surface grooves 23 . Alternatively, the wind flowing through the plurality of central side surface grooves 23 can be increased.

By forming the plurality of central side surface grooves 23 of the present embodiment on the surface 17 of the seat pad 15 in this way, the plurality of central side surface grooves 23A of Comparative Example 3 are formed on the surface 17 of the seat pad 15. Air flow is more likely to occur between the back of the occupant 2 and the seat back 10 compared to the case where the seat back 10 is seated. Therefore, it is possible to suppress the occupant's feeling of heat and stuffiness.

(Second embodiment)
As shown in FIG. 14, in this embodiment, the surface 17 of the lower pad portion 151b of the seat pad 15 has a plurality of central side surface grooves 23 and a plurality of outer side surface grooves 24 described in the first embodiment. Of these, only a plurality of central side surface grooves 23 are formed. Other configurations of the vehicle seat air conditioner 1 are the same as those of the first embodiment.

As shown in FIG. 15 , when the occupant 2 is in the normal sitting posture, the center side surface groove 23 forms an air layer between the center of the back and the seat pad 15 . As a result, compared with the vehicle

seat air conditioners

1A and 1B of Comparative Examples 1 and 2, it is possible to suppress the occupant's feeling of heat and stuffiness.

In the vehicle seat air-conditioning system 1 of the present embodiment, when the air blower 4 is activated and the seating posture of the occupant 2 changes from the normal posture to the oblique posture as shown in FIG. 16, the central ventilation hole 22 is opened. be. Therefore, air is sucked from the central ventilation hole 22 and flows between the center of the back of the occupant 2 and the seat back 10 as indicated by the dashed arrows. At this time, the wind toward the central ventilation hole 22 flows through the central front groove 23 . Therefore, as compared with the vehicle

seat air conditioners

(Third embodiment)
In this embodiment, the arrangement of the plurality of central side surface grooves 23 is different from that in the second embodiment. Specifically, as shown in FIG. 17, in the present embodiment, a plurality of center-side front grooves 23 are formed on the surface 17 of the lower pad portion 151b of the seat pad 15 except for the front groove setting disabled range 30. formed. The front groove setting impossible range 30 is a range of the surface 17 of the lower pad portion 151b in which grooves cannot be formed for some reason.

The center side surface groove 23 includes a plurality of horizontal straight portions 23b, 23c, 23d, 23e and a plurality of vertical straight portions 23h, 23i, 23j, 23k, 23l. Each of the horizontal straight portions 23b to 23e extends linearly in the horizontal direction D2 and connects the ventilation holes 22 positioned on one side and the other side in the horizontal direction D2. Each of the plurality of vertical linear portions 23h to 23l extends linearly in the vertical direction (that is, the vertical direction D1), and connects the ventilation holes 22 located on one side and the other side in the vertical direction.

Other configurations of the vehicle seat air conditioner 1 of the present embodiment are the same as those of the second embodiment. Therefore, the same effects as in the second embodiment can be obtained in this embodiment as well.

(Fourth embodiment)
In this embodiment, the arrangement of the plurality of central side surface grooves 23 is different from that in the second embodiment. Specifically, as shown in FIG. 18, in the present embodiment, a plurality of central side surface grooves 23 are formed on the surface 17 of the lower pad portion 151b of the seat pad 15 except for the surface groove setting disabled range 31. formed.

The center side surface groove 23 includes a plurality of horizontal straight portions 23a to 23e, a plurality of vertical straight portions 23h, 23k, 23m, and a plurality of curved portions 23n, 23o.

The vertical linear portions 23h and 23k extend linearly in the vertical direction and connect the ventilation holes 22 located on one side and the other side in the vertical direction. The vertical linear portion 23m extends linearly in the vertical direction and connects one ventilation hole 22 (ie, fourth ventilation hole 22d) and one horizontal linear portion 23 (ie, first horizontal linear portion 23a). I'm in.

Each of the plurality of curved portions 23n, 23o extends in a curved line in the vertical direction, bypasses the front groove setting impossible range 31, and connects the ventilation holes 22 located on one side and the other side in the vertical direction. there is Specifically, the curved portion 23n extends in a curved line connecting the second ventilation hole 22b and the third ventilation hole 22c. The curved portion 23o extends in a curved line connecting the seventh ventilation hole 22g and the eighth ventilation hole 22h.

(Fifth embodiment)
In this embodiment, the arrangement of the plurality of central side surface grooves 23 is different from that in the second embodiment. Specifically, as shown in FIG. 19, in the present embodiment, a plurality of center side surface grooves are formed on the surface 17 of the lower pad portion 151b of the seat pad 15 except for the surface groove setting

disabled ranges

32 and 33. 23 are formed.

The center side surface groove 23 includes a plurality of vertical straight portions 23h, 23i, 23j, 23k, and 23l, as well as oblique straight portions 23p and 23q, and a vertical straight portion 23r. The oblique straight portion 23p communicates with the first ventilation hole 22a and linearly extends obliquely upward from the first ventilation hole 22a. The oblique linear portion 23q communicates with the sixth ventilation hole 22f and extends linearly obliquely upward from the sixth ventilation hole 22f. The vertical straight portion 23r communicates with the fourth ventilation hole 22d and linearly extends upward from the fourth ventilation hole 22d. The oblique straight portion 23p, the oblique straight portion 23q and the vertical straight portion 23r are connected. In this way, the oblique linear portions 23p, 23q and the vertical linear portion 23r bypass the front groove setting

disabled ranges

32, 33 and connect the first ventilation hole 22a, the fourth ventilation hole 22d, and the sixth ventilation hole 22f. arranged in a shape.

In addition, the central side surface groove 23 includes curved portions 23s and 23t and a vertical linear portion 23u. The curved portion 23s communicates with the third ventilation hole 22c and extends downward from the third ventilation hole 22c in an arc curve. The curved portion 23t communicates with the eighth ventilation hole 22h and extends downward from the eighth ventilation hole 22h in an arc curve. The vertical straight portion 23u communicates with the fifth ventilation hole 22e and extends downward from the fifth ventilation hole 22e. The curved portions 23s, 23t and the straight portion 23u are arranged in a curved shape or a straight line to bypass the front groove settable ranges 32, 33 and connect the third vent hole 22c, the fifth vent hole 22e and the eighth vent hole 22h. It is

(Sixth embodiment)
As shown in FIG. 20 , in the vehicle seat air conditioner 1 of this embodiment, the seat pad 15 of the seat cushion 11 is formed with a plurality of central side surface grooves 23 and a plurality of outer side surface grooves 24 . FIG. 20 shows the seat cushion 11 with the skin removed.

The seat cushion 11 has a central portion 41 and side supports 42 and 43. The center portion 41 is a portion of the seat cushion 11 located on the center side in the lateral direction D2. The central portion 41 faces the buttocks and thighs of the occupant 2 seated on the seat 3 in the thickness direction of the seat cushion 11 and supports the buttocks and thighs from below.

The side supports 42 and 43 are portions of the seat cushion 11 located on both sides of the central portion 41 in the lateral direction D2. The side supports 42 and 43 laterally support the buttocks and thighs of the occupant 2 seated on the seat 3 .

The seat cushion 11 includes a seat pad 15 and an upholstery 16, similar to the seat back 10. The seat pad 15 of the seat cushion 11 has a central pad portion 151 and

side pad portions

152 and 153 like the seat pad 15 of the seat back 10 . The center pad portion 151 is a portion of the seat pad 15 located on the center side in the lateral direction D2 and constitutes the center portion 41 of the seat cushion 11 . The center pad portion 151 is a region of the seat pad 15 that faces the buttocks and thighs of the occupant 2 seated on the seat 3 . The

side pad portions

152 and 153 are portions of the seat pad 15 located on both sides of the central pad portion 151 in the lateral direction D2, and constitute side supports 42 and 43 of the seat cushion 11 .

A plurality of hanging grooves 20 are formed in the seat pad 15 of the seat cushion 11 in the same manner as the seat pad 15 of the seat back 10 . The multiple hanging grooves 20 include a first hanging groove 206 and a second hanging groove 207 . The first hanging groove 206 is arranged at the boundary between the central pad portion 151 and the right side pad portion 152 on the surface 17 of the seat pad 15 and extends in the front-rear direction of the seat cushion 11 . The second hanging groove 207 is arranged in the boundary portion between the central pad portion 151 and the left side pad portion 153 on the surface 17 of the seat pad 15 and extends in the front-rear direction of the central pad portion 151 .

A plurality of ventilation holes 22 are formed in the center pad portion 151 of the seat pad 15 . The plurality of ventilation holes 22 are formed in a region of the center pad portion 151 on the center side in the lateral direction D2 and in a region of the center pad portion 151 on the rear side of the center in the front-rear direction D3, and are spaced apart from each other in the front-rear direction D3. It includes two central ventilation holes 22i, 22j arranged in a row with a gap between them. The plurality of ventilation holes 22 includes five right ventilation holes 22k, 22l, 22m, 22n, and 22o arranged in a line in the right region of the central pad portion 151 in the lateral direction D2 with spaces therebetween in the front-rear direction D3. including. The plurality of ventilation holes 22 includes five left ventilation holes 22p, 22q, 22r, 22s, and 22t arranged in a row in the front-rear direction D3 in the left region of the central pad portion 151 in the lateral direction D2. including. Each of the five right ventilation holes 22k to 22o and the five left ventilation holes 22p to 22t corresponds to one outer ventilation hole arranged outside the center ventilation hole in the lateral direction D2 in the center pad portion. do.

A plurality of central side surface grooves 23 and a plurality of outer side surface grooves 24 are formed on the surface 17 of the seat pad 15 .

The plurality of central side surface grooves 23 are arranged in the area between the five right ventilation holes 22k to 22o and the five left ventilation holes 22p to 22t of the central pad portion 151. In other words, the plurality of central side surface grooves 23 are arranged at least in the central portion of the portions obtained by dividing the central pad portion 151 into three equal parts in the lateral direction D2.

A plurality of central side surface grooves 23 are arranged in a line connecting two or more of the plurality of ventilation holes 22 . Specifically, the plurality of center-side front grooves 23 connect one or more ventilation holes 22 located on one side in the lateral direction D2 and one or more ventilation holes 22 located on the other side in the lateral direction D2. arranged in a line.

More specifically, the plurality of center-side front grooves 23 are linear portions that connect the center-side ventilation hole 22i and the right-side ventilation hole 22k located at the same position in the front-rear direction D3, and extend linearly in the lateral direction D2. It includes a horizontal straight portion 231 that extends to a wide area. The plurality of center-side front grooves 23 are linear portions that connect the center-side ventilation hole 22j and the right-side ventilation hole 22l located at the same position in the front-rear direction D3, and are horizontal straight portions that extend linearly in the horizontal direction D2. 232. The plurality of center-side front grooves 23 are linear portions that connect the center-side ventilation hole 22i and the left-side ventilation hole 22p located at the same position in the front-rear direction D3, and are horizontal straight portions that extend linearly in the horizontal direction D2. 233. The plurality of center-side front grooves 23 are linear portions that connect the center-side ventilation hole 22j and the left-side ventilation hole 22q located at the same position in the front-rear direction D3, and are horizontal straight portions that extend linearly in the horizontal direction D2. 234.

The plurality of center-side front grooves 23 are linear portions that connect the right side ventilation hole 22m and the left side ventilation hole 22r that are located at the same position in the front-rear direction D3, and are horizontal straight portions 235 that extend linearly in the lateral direction D2. including. The plurality of central side surface grooves 23 include vertical straight portions 236 that linearly extend in the front-rear direction D3 so as to intersect with the plurality of horizontal straight portions 231, 232, 235 located at different positions in the front-rear direction D3. The plurality of central side surface grooves 23 include vertical straight portions 237 that linearly extend in the front-rear direction D3 so as to intersect with the plurality of horizontal straight portions 233, 234, 235 located at different positions in the front-rear direction D3.

In this way, the plurality of central side surface grooves 23 are formed by the plurality of horizontal straight portions 231 to 235 and the plurality of vertical straight portions 236, 237, and the plurality of left ventilation holes 22p at different positions in the vertical direction and the horizontal direction D2. .

In addition, the plurality of center-side front grooves 23 are linear portions that connect the right side ventilation hole 22n and the left side ventilation hole 22s, which are located at the same position in the front-rear direction D3, and extend linearly in the lateral direction D2. A portion 238 is included. The plurality of center-side front grooves 23 are linear portions that connect the right side ventilation hole 22o and the left side ventilation hole 22t that are located at the same position in the front-rear direction D3, and are horizontal straight portions 239 that extend linearly in the lateral direction D2. including. The plurality of central side surface grooves 23 include vertical straight portions 2310, 2311 that linearly extend in the front-rear direction D3 so as to intersect with the plurality of horizontal straight portions 238, 239 located at different positions in the front-rear direction D3.

Thus, the plurality of central side surface grooves 23 are formed by the plurality of horizontal straight portions 238, 239 and the plurality of vertical straight portions 2310, 2311, and the plurality of left ventilation holes 22s located at different positions in the vertical direction and the horizontal direction D2. , 22t and a plurality of right ventilation holes 22n, 22o are connected to each other.

The plurality of outer surface grooves 24 are arranged on both end side portions of the portions obtained by dividing the central pad portion 151 into three equal parts in the lateral direction D2. Each of the plurality of outer surface grooves 24 communicates with the corresponding ventilation hole 22 among the plurality of ventilation holes 22 . Each of the plurality of outer surface grooves 24 extends outward from the corresponding ventilation hole 22 in the lateral direction D2 from the central side of the central pad portion 151 in the lateral direction D2.

Specifically, the plurality of outer surface grooves 24 include outer surface grooves 24k, 24l, 24m, 24n, and 24o that are connected to the plurality of right ventilation holes 22k, 22l, 22m, 22n, and 22o, respectively. Each of the outer surface grooves 24k-24o extends in the lateral direction D2 from each of the plurality of corresponding right ventilation holes 22k-22o to the first hanging groove 206. As shown in FIG. The plurality of outer surface grooves 24 include outer surface grooves 24p, 24q, 24r, 24s, 24t that are continuous with the plurality of left vent holes 22p, 22q, 22r, 22s, 22t, respectively. Each of the outer surface grooves 24p-24t extends in the lateral direction D2 from each of the plurality of corresponding left ventilation holes 22p-22t to the second hanging groove 207. As shown in FIG.

The same effects as in the first embodiment can also be obtained with this embodiment. That is, according to this embodiment, when the seating posture of the occupant 2 is a normal posture in which the entire buttocks and thighs of the occupant 2 are in surface contact with the surface of the seat cushion 11, the central side surface groove 23 allows the occupant 2 to An air layer is formed between the buttocks and thighs and the seat pad 15 . As a result, the occupant's feeling of heat and stuffiness can be suppressed as compared with the case where the center side surface groove 23 is not formed.

Also, when the seating posture of the occupant 2 changes from the normal posture to the posture in which at least part of the buttocks and thighs of the occupant 2 are separated from the surface of the seat cushion 11, air is sucked through the open ventilation holes 22. As a result, air flows between the buttocks and thighs of the occupant 2 and the seat cushion 11 . At this time, the air flowing toward the opened ventilation holes 22 flows through the center side surface grooves 23 . Therefore, more air flows between the buttocks and thighs of the occupant 2 and the seat cushion 11 than when the center side surface grooves 23 are not formed. As a result, it is possible to suppress the occupant's feeling of heat and stuffiness.

(Seventh embodiment)
This embodiment differs from the sixth embodiment in the arrangement of the plurality of ventilation holes 22 . Specifically, as shown in FIG. 21, in the present embodiment, the central pad portion 151 is not formed with the central ventilation hole. The horizontal straight portion 231 of the center-side front groove 23 connects the right ventilation hole 22k and the left ventilation hole 22p, which are located at the same position in the front-rear direction D3. The horizontal straight portion 232 of the center-side front groove 23 connects the right ventilation hole 22l and the left ventilation hole 22q, which are located at the same position in the front-rear direction D3. Other configurations of the vehicle seat air conditioner 1 are the same as those of the sixth embodiment. Also in this embodiment, the same effect as in the sixth embodiment can be obtained.

Here, the test results conducted by the present inventor will be described. As shown in FIG. 22, the present inventor divides the surface of the seat pad 15 of the seat cushion 11 into a region R1 in which the center side surface groove 23 is formed and a region R2 in which the center side surface groove 23 is not formed. established. The present inventor operated the air blower of the vehicle seat air conditioner while the occupant was sitting on the seat cushion 11 covering the seat pad 15 with the skin. Three seconds after the occupant left the seat cushion 11, the inventor measured the temperature of the skin of the seat cushion 11 using a thermoviewer.

As a result, the average temperature of the epidermis in the region R1 where the central surface grooves 23 were formed was 30.5°C. The average temperature of the skin in the region R2 where the central side surface groove 23 was not formed was 32.4°C. The average skin temperature of the region R1 in which the central surface groove 23 was formed was about 2° C. lower than that of the region R2 in which the central surface groove 23 was not formed. It is conceivable that the area R1 in which the center side surface groove 23 is formed has a lower average temperature of the outer skin because more wind flows occur immediately after the occupant leaves the area. From this test result, it was confirmed that forming the center side surface groove 23 on the surface of the seat pad 15 can reduce the heat felt by the passenger.

(Other embodiments)
(1) In the first embodiment, in each of the plurality of central side surface grooves 23 and the plurality of outer side surface grooves 24, the cross-sectional shape of the surface grooves in the cross section perpendicular to the direction in which the surface grooves extend is rectangular. is a shape excluding one side. However, the cross-sectional shape of the surface grooves may be other shapes. For example, as shown in FIG. 23, the cross-sectional shape of the surface groove may be a hexagonal shape with two chamfered corners of a rectangle excluding one side. Also, the cross-sectional shape of the surface grooves may be a triangular shape with one side removed, that is, a V-shape, as shown in FIG. Also, the cross-sectional shape of the surface groove may be arcuate as shown in FIG.

(2) In each of the above-described embodiments, a plurality of central side surface grooves 23 are formed, but only one central side surface groove 23 may be formed. As described above, one or more central side surface grooves 23 may be formed.

(3) In the first embodiment, as shown in FIG. 4, as the plurality of ventilation holes 22, ventilation holes 22d and 22e are formed in the center pad portion 151 on the center side in the lateral direction D2. However, these ventilation holes 22d and 22e may not be formed. In this case, the center-side front groove 23 includes the ventilation holes 22a, 22b, and 22c located on one side in the lateral direction D2 of the central pad portion 151 relative to the center side in the lateral direction D2, and the central pad portion 151 in the lateral direction. The ventilation holes 22f, 22g, and 22h located on the other side in the lateral direction D2 of the central side of D2 may be arranged in a line that connects them.

(4) In the first embodiment, the formation positions of the plurality of ventilation holes 22, the central surface grooves 23, and the outer surface grooves 24 were the upper region of the lower pad portion 151b. It may be the lower region of the . The lower region of the lower pad portion 151b is the lower region of the regions obtained by vertically dividing the central pad portion 151 into three.

(5) In the first embodiment, the center-side front grooves 23 are arranged linearly connecting all the eight ventilation holes 22 of the lower pad portion 151b. However, some of the eight ventilation holes 22 may not be connected to other ventilation holes 22 . In other words, it is only necessary that they are linearly arranged to connect at least two or more of the eight ventilation holes 22 of the lower pad portion 151b.

Similarly, in the sixth embodiment, the center side surface grooves 23 are arranged linearly connecting the plurality of ventilation holes 22 of the central pad portion 151 with respect to all of the ventilation holes 22 . However, the center side surface groove 23 may be arranged linearly connecting at least two or more ventilation holes 22 among the plurality of ventilation holes 22 of the central pad portion 151 .

(6) In each of the above-described embodiments, the plurality of ventilation holes 22 suck air from the space on the occupant side by the operation of the blower 4 . However, the plurality of ventilation holes 22 may blow air into the space on the occupant side by the operation of the blower 4 .

(7) The present disclosure is not limited to the above-described embodiments, and can be modified as appropriate, including various modifications and modifications within the equivalent range. Moreover, the above-described embodiments are not unrelated to each other, and can be appropriately combined unless the combination is clearly impossible. Further, in each of the above-described embodiments, it goes without saying that the elements constituting the embodiment are not necessarily essential, unless it is explicitly stated that they are essential, or they are clearly considered essential in principle. stomach. In addition, in each of the above-described embodiments, when numerical values such as the number, numerical value, amount, range, etc. of the constituent elements of the embodiment are mentioned, when it is explicitly stated that they are particularly essential, and when they are clearly limited to a specific number in principle It is not limited to that specific number, except when In addition, in each of the above-described embodiments, when referring to the material, shape, positional relationship, etc. of the constituent elements, unless otherwise specified or in principle limited to a specific material, shape, positional relationship, etc. , its material, shape, positional relationship, and the like.

Claims

A vehicle seat that is applied to a vehicle seat air conditioner and on which an occupant sits,
It is composed of a resin molded body that supports the load of a seated occupant, and has a surface (17) that is a surface on the side of a seated occupant and a back surface (18) that is a surface on the opposite side of the occupant. a seat pad (15) formed with a plurality of ventilation holes (22) penetrating from to the back surface and through which the wind formed by the operation of the blower flows;
a breathable skin (16) covering the surface of the seat pad;
A vehicle seat, wherein one or more surface grooves (23) linearly arranged to connect two or more of the plurality of ventilation holes are formed on the surface of the seat pad.
The seat pad and the skin constitute a seat back (10) that supports the back of the occupant,
The seat pad comprises a central pad portion (151) located on the center side of the seat back in the lateral direction (D2) of the seat pad, and both sides of the central pad portion in the lateral direction of the seat pad. and a pair of side pad portions (152, 153) located in
Suspension grooves (20) for connecting the seat pad and the outer skin are formed in the boundary portions between the central pad portion and the pair of side pad portions of the seat pad,
The vehicle seat according to claim 1, wherein the plurality of ventilation holes and the surface grooves are arranged in the central pad portion.
The seat pad and the skin constitute a seat cushion (11) that supports the back of the occupant,
The seat pad comprises a central pad portion (151) located on the central side of the seat cushion in the lateral direction (D2) of the seat pad, and both sides of the central pad portion in the lateral direction of the seat pad. and a pair of side pad portions (152, 153) located in
Suspension grooves (20) for connecting the seat pad and the outer skin are formed in the boundary portions between the central pad portion and the pair of side pad portions of the seat pad,
The vehicle seat according to claim 1, wherein the plurality of ventilation holes and the surface grooves are arranged in the central pad portion.
The plurality of ventilation holes include one center side ventilation hole (22d, 22e, 22i, 22j) arranged on the center side in the lateral direction of the center pad portion and the center side ventilation hole of the center pad portion. and one outer ventilation hole (22b, 22c, 22k, 22l) arranged laterally outside the holes,
The vehicle seat according to claim 2 or 3, wherein the surface groove includes linear portions (23b, 23c, 231, 232) connecting the central ventilation hole and the outer ventilation hole.