Vehicle seats

Abstract

To provide a vehicle seat that can improve the efficiency of the seat's air conditioning system. [Solution] The vehicle seat 1 comprises a seat back 2, a seat cushion 3, and an air conditioning system 5 that circulates air over the surface of these seats. The air conditioning system 5 includes a first intake passage 5A that draws in air from the front of the seat surface of the seat cushion 3, a first exhaust passage 5B that discharges the air drawn in from the first intake passage 5A from the rear of the seat surface, and a second intake passage 5C that draws in the air discharged from the first exhaust passage 5B from the lower part of the front of the seat back 2.

Description

Technical Field

[0001] The present invention relates to a vehicle seat. More specifically, it relates to a vehicle seat having a seat cushion, a seat back, and an air conditioning system that flows air over the surfaces of these seats.

Background Art

[0002] Patent Document 1 discloses a vehicle seat equipped with an air conditioning function that suppresses stuffiness during seating by flowing air over the seat surface. Specifically, a blower is built into the seat back and the seat cushion, and by these, suction and blowing of air from the seat surface are performed.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In the configuration described in Patent Document 1, it has a circulation structure that blows out the air sucked from the seat surface from the seat surface. However, since the air blown out from the seat surface is discharged to the outside as unused, there is room for improvement from the perspective of efficiency. Therefore, the present invention provides a vehicle seat capable of enhancing the efficiency of seat air conditioning.

Means for Solving the Problems

[0005] As means for solving the above problems, the vehicle seat of the present invention takes the following means.

[0006] In other words, the first invention of the present invention is a vehicle seat having a seat cushion, a seat back, and an air conditioning system for circulating air over the surface of these seats, wherein the air conditioning system has a first intake passage for drawing in air from the front of the seat surface of the seat cushion, a first exhaust passage for discharging the air drawn in from the first intake passage from the rear of the seat surface, and a second intake passage for drawing in the air discharged from the first exhaust passage from the lower part of the front of the seat back.

[0007] According to the first invention, air drawn in from the front upper surface of the seat cushion can be reused as air to be discharged from the rear upper surface or drawn in from the lower front surface of the seat back. Therefore, when cool or warm air from the air conditioner is blown out from the front of the seat, that conditioned air can be taken in and used to efficiently flow to the seat surface of the seat cushion and seat back. In addition, the flow of conditioned air blown out from the front of the seat can be used to guide the air discharged from the rear upper surface of the seat cushion to be more easily drawn into the seat back.

[0008] The second invention of the present invention is a vehicle seat in which, in the first invention described above, the air conditioning system further has a second exhaust passage that discharges air drawn in from the second intake passage from the rear surface of the seat back.

[0009] According to the second invention, by utilizing the airflow discharged from the rear surface of the seat back, it is possible to reuse the conditioned air for the rear seat occupants and promote the stirring and circulation of air in the rear seat space.

[0010] The third invention of the present invention is a vehicle seat in which, in the first or second invention described above, the first exhaust passage opens at a position away from the seating contact area that makes contact with the seat when the AM95 dummy is seated on the upper surface of the seat, toward the rear of the seat.

[0011] According to the third invention, the first exhaust passage for discharging air from the rear upper surface of the seat cushion can be formed in a position that is less likely to be crushed by seating pressure and is close to the seat back.

[0012] The fourth invention of the present invention is a vehicle seat in which, in the third invention described above, the first exhaust passage has an exhaust hole that penetrates the cushion pad, which is the pad material of the seat cushion, in the pad thickness direction, and a surface groove that recesses the cushion pad from the pad surface so that the front side portion of the exhaust hole facing the upper surface of the seat extends toward the rear side of the seat.

[0013] According to the fourth invention, the surface grooves allow the exhaust vent to open at a position away from the seat contact area and towards the rear of the seat, without having to move or enlarge the vent towards the rear of the seat. Furthermore, the surface grooves allow the air discharged from the exhaust vent to be guided towards the rear of the seat so that it flows along the surface of the seated occupant's buttocks due to the Coanda effect.

[0014] The fifth invention of the present invention is a vehicle seat in which, in the fourth invention described above, the cushion pad has a rear suspension groove extending in the width direction of the seat in a region rearward of the seat from the surface groove, for suspending a cushion cover, which is a cover material for the seat cushion, from the surface of the pad, and the surface groove extends to the rearward side of the seat to a position that communicates with the rear suspension groove.

[0015] According to the fifth invention, the air discharged from the surface groove can be directed to the rear suspension groove. As a result, the air discharged from the exhaust port can be more appropriately guided to the rear of the seat so that it flows along the surface of the seated occupant's buttocks. In addition, the air discharged from the exhaust port can be diffused in the seat width direction through the rear suspension groove before being discharged.

[0016] The sixth invention of the present invention is, in the above first or second invention, the cushion pad which is the pad material of the seat cushion has a front suspension groove extending in the seat width direction for suspending the cushion cover which is the cover material of the seat cushion from the front side of the pad between the front part and the rear part of the seat upper surface, the air conditioning system has a first blower for applying a suction pressure to the first intake passage at a position closer to the first intake passage than the front suspension groove, and the first exhaust passage has an exhaust groove for causing the air discharged from the first blower to flow from the back side of the pad to the rear side of the seat across the front suspension groove, and is a vehicle seat.

[0017] According to the sixth invention, the first blower can be arranged at a position close to the first intake passage, and a high negative pressure can be applied to the first intake passage. Further, even if the first blower is arranged at a position closer to the front side of the seat than the front suspension groove, the sucked air can be appropriately discharged from the upper surface of the rear side of the seat cushion through the exhaust groove extending across the front suspension groove.

Brief Description of the Drawings

[0018] [Figure 1] It is a side view showing the configuration of a vehicle seat according to the first embodiment. [Figure 2] It is a plan view of a vehicle seat. [Figure 3] It is a plan view of a cushion pad. [Figure 4] It is a sectional view taken along line IV-IV of FIG. 2. [Figure 5] It is a sectional view taken along line V-V of FIG. 2. [Figure 6] It is an enlarged view of part VI of FIG. 5.[[ID=二十八]] [[ID=二十九]]

Mode for Carrying Out the Invention

[0019] Hereinafter, the embodiments for carrying out the present invention will be described with reference to the drawings.

[0020] 《First Embodiment》[[ID=4}} (Schematic Configuration of Seat 1) First, the configuration of the seat (vehicle seat) 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 6. In the following description, when indicating directions such as front and rear, up and down, left and right, etc., the respective directions shown in each figure shall be referred to. The directions shown in each figure are the directions as seen from the seated occupant of the seat 1. Also, when indicating each direction with "seat" attached, such as "seat width direction", it shall refer to the respective directions based on the seat 1.

[0021] As shown in FIG. 1, the seat 1 according to the present embodiment is configured as a front seat mounted on an automobile. The seat 1 has a seat back 2 that serves as a backrest, a seat cushion 3 that serves as a seating portion, and a headrest 4 that serves as a headrest.

[0022] The seat 1 further has an air conditioning system 5 that suppresses sweating during seating by flowing air over the seat surface. The air conditioning system 5 forms a flow of air on the seat surface by sucking air in the vehicle interior from the seat surface into the seat or discharging the sucked air from the seat surface.

[0023] Specifically, the air conditioning system 5 is configured to take in conditioned air (cool air or warm air) blown out from an air conditioner outlet AC provided on the instrument panel of the vehicle and flow it over the seat surface. Thereby, when the air blown out from the air conditioner outlet AC is cool air, sweating during seating can be suppressed. Also, in the case of warm air, the surface of the seated occupant's body can be warmed.

[0024] Also, when a function of presetting the vehicle interior to a comfortable temperature by so-called remote air conditioning is provided, the seat surface can be efficiently brought close to a comfortable temperature by using the conditioned air blown out from the air conditioner outlet AC. Note that the air blown out from the air conditioner outlet AC is not limited to conditioned air and may be simply blown air.

[0025] The air conditioning system 5 of seat 1 specifically includes a first intake passage 5A that draws in air from the front of the seat cushion 3's upper surface, and a first exhaust passage 5B that discharges the drawn-in air from the rear of the seat cushion 3's upper surface. The air conditioning system 5 also includes a second intake passage 5C that draws in the air discharged from the first exhaust passage 5B from the lower part of the front of the seat back 2, and a second exhaust passage 5D that discharges the drawn-in air from the rear of the seat back 2.

[0026] Furthermore, the air conditioning system 5 includes a first blower 5E installed at the bottom of the seat cushion 3 to perform the aforementioned suction and blowing, and a second blower 5F installed inside the seat back 2 to perform the aforementioned suction and blowing. The air conditioning system 5 is configured to draw in air from the front of the seat top surface of the seat cushion 3, discharge it from the rear of the seat top surface, and then draw that (discharged air) in from the bottom of the front of the seat back 2.

[0027] This configuration allows the conditioned air blown out from the air conditioner outlet AC to be reused as conditioned air that flows along the thighs, buttocks, and lower back of the seated occupant. Furthermore, the air conditioning system 5 is configured to draw in air from the front of the seat back 2 and discharge it from the rear of the seat. This configuration allows for the reuse of conditioned air for rear-seat occupants (those seated in the rear seats) and promotes the agitation and circulation of air in the rear seat space.

[0028] The specific configuration of each part of the air conditioning system 5 will be explained in detail below. First, the basic configuration of the seat cushion 3 will be described. As shown in Figure 2, the seat cushion 3 has a metal cushion frame 3F that forms its internal skeleton and a urethane foam cushion pad 3P that forms the cushioning material. The seat cushion 3 also has a fabric cushion cover 3C that covers the surface of the cushion pad 3P.

[0029] The cushion frame 3F forms the skeletal structure along the front, rear, left, and right edges of the seat cushion 3. The cushion pad 3P is assembled to cover the cushion frame 3F from above the seat. As a result, the front, rear, left, and right edges of the cushion pad 3P are supported from below the seat by the cushion frame 3F. Furthermore, the cushion pad 3P is elastically supported from below the seat by a spring body (not shown) bridged between the front and rear frame sections of the cushion frame 3F.

[0030] The cushion cover 3C is made of a highly breathable fabric that does not obstruct the intake or exhaust of air from the seat surface. The cushion cover 3C is placed over the cushion pad 3P, which is mounted on the cushion frame 3F, from above the seat. The front, back, left, and right edges of the cushion cover 3C are then pulled downwards towards the seat, wrapping around the sides of the cushion pad 3P, and secured to the cushion frame 3F.

[0031] As a result, the cushion cover 3C is stretched and fixed in close contact with the seat surface of the cushion pad 3P. Through the tensioning of this cushion cover 3C, the cushion pad 3P is held in place while assembled to the cushion frame 3F.

[0032] As shown in Figure 3, the cushion pad 3P has a top plate that supports the seated occupant's buttocks and thighs, which is composed of a central main top plate and left and right side top plate sections. The central main top plate has a nearly flat shape that supports the seated occupant's buttocks and thighs directly below it. The left and right side top plate sections have a levee-like shape that rises diagonally upward from the main top plate. These side top plate sections function as side supports that support the seated occupant's buttocks and thighs from diagonally downwards.

[0033] The top surface of the cushion pad 3P has side suspension grooves P1 that extend in a groove-like manner in the front-to-back direction of the sheet, separating the main top surface from each side surface. The top surface of the cushion pad 3P also has a front suspension groove P2 that extends in a groove-like manner in the sheet width direction, separating the front and rear of the main top surface. The top surface of the cushion pad 3P also has a rear suspension groove P3 that extends in a groove-like manner in the sheet width direction, separating the rear of the main top surface from front to back.

[0034] These side suspension grooves P1, front suspension groove P2, and rear suspension groove P3 function as grooves for suspending the cushion cover 3C (see Figure 2) that is placed over their surfaces. Through this suspension, the cushion cover 3C is placed over the cushion pad 3P in a wide, tight-fitting manner without any gaps or wrinkles.

[0035] As shown in Figures 3 to 5, multiple intake holes H1 constituting the first intake passage 5A are formed in the front of the main top plate of the cushion pad 3P. These intake holes H1 are formed to penetrate the cushion pad 3P in the direction of the pad thickness.

[0036] Furthermore, on the underside of the cushion pad 3P, groove-shaped intake grooves H2 are formed, which serve as ventilation passages to concentrate the air drawn in from each intake hole H1 to the installation location of the first blower 5E. A cover BC is placed over the intake grooves H2 from below the sheet to prevent the air passing through them from leaking to the outside.

[0037] The first blower 5E has its intake port connected to a connection port opened in a part of the cover BC. The first blower 5E is positioned directly below the front of the main top plate where the first intake passage 5A of the cushion pad 3P is formed. By positioning the first blower 5E so close to the first intake passage 5A, a high suction negative pressure can be applied to the first intake passage 5A.

[0038] Multiple exhaust holes H3 constituting the first exhaust passage 5B are formed at the rear of the main top plate of the cushion pad 3P. These exhaust holes H3 are formed to penetrate the cushion pad 3P in the direction of the pad thickness. These exhaust holes H3 are formed in the region between the front suspension groove P2 and the rear suspension groove P3 of the cushion pad 3P.

[0039] Furthermore, the back surface of the cushion pad 3P has groove-shaped exhaust grooves H4 formed therein, which serve as ventilation passages to guide the air discharged from the first blower 5E to each exhaust port H3. These exhaust grooves H4 are also covered from below the seat by a cover BC to prevent the air passing through them from leaking out.

[0040] The first blower 5E has its outlet connected to a connection port made in a part of the cover BC. The exhaust groove H4 is formed to extend from the connection point with the first blower 5E, which is located in front of the front suspension groove P2, across the front suspension groove P2 to the rear of the seat. With this configuration, even if it is difficult to place the first blower 5E directly below the rear of the cushion pad 3P due to the lowering of the seat cushion 3, the first blower 5E can be placed directly below the front while the exhaust air can be appropriately guided to each exhaust hole H3.

[0041] As shown in Figure 3, each of the intake holes H1 and exhaust holes H3 described above is formed in the area on the top surface of the cushion pad 3P where the seated occupant's buttocks and thighs rest from above the seat. Specifically, each of the intake holes H1 and exhaust holes H3 is formed within or near the seating contact area A that makes contact with the seat cushion 3 when the AM95 dummy is seated there.

[0042] More specifically, each intake port H1 is formed along the outer or inner edge of the thigh portion of the seating contact area A. Each exhaust port H3 is formed along the outer or rear edge of the buttock portion of the seating contact area A. These intake ports H1 and exhaust ports H3 are located in the area between the left and right side suspension grooves P1.

[0043] In the inner region along the left and right side suspension grooves P1, there are exhaust holes H3 arranged in a single row in the front-to-rear direction of the seat. Each of the rearmost exhaust holes H3 has a surface groove H5 formed therein that extends the front portion of the hole toward the rear of the seat. As shown in Figure 6, these surface grooves H5 are formed in such a way that the cushion pad 3P is recessed from the front side of the pad so that the front portion of each exhaust hole H3 facing the top surface of the seat is extended toward the rear of the seat.

[0044] As shown in Figure 3, each surface groove H5 has a straight groove shape that extends in an oval shape in the front-rear direction of the seat when viewed from above. Each surface groove H5 is shaped to extend to a position where it moves away from the seating contact area A towards the rear of the seat. More specifically, as shown in Figure 6, each surface groove H5 is shaped to extend towards the rear of the seat to a position where it communicates with the rear suspension groove P3 formed in the rear area of ​​the seat.

[0045] The formation of these surface grooves H5 allows each exhaust port H3 to open upwards on the seat at a position away from the seating contact area A towards the rear of the seat. As a result, even if the seated occupant's buttocks are in contact with the ground directly above each exhaust port H3, the air discharged from each exhaust port H3 can be guided by the Coanda effect to flow along the surface of the buttocks towards the rear and upwards of the seat. Because these surface grooves H5 are formed at a position away from the seating contact area A towards the rear of the seat, the seat cushion 3 is less likely to collapse when an occupant sits on it.

[0046] Furthermore, since each surface groove H5 is in communication with the rear suspension groove P3, the air discharged from each surface groove H5 can be directed to the rear suspension groove P3. As a result, the air discharged from each exhaust hole H3 is guided towards the rear of the seat and can flow along the surface of the seated occupant's buttocks due to the Coanda effect. In addition, the air discharged from each exhaust hole H3 can be diffused in the width direction of the seat through the rear suspension groove P3 and discharged from the seat surface.

[0047] As shown in Figures 4 and 5, of the exhaust holes H3, the rear edge exhaust holes H3 that are aligned along the rear edge of the seat in the width direction of the seat, and the rear suspension grooves P3 that are aligned on the rear side of the seat, open upwards to face the triangular gap T, which is formed in a side view between the seat cushion 3 and the seat back 2. Therefore, when an occupant is seated on the seat cushion 3, the air discharged from each exhaust hole H3 and the rear suspension groove P3 flows upwards to the seat along the surface of the seat through the space secured by the triangular gap T, due to the Coanda effect.

[0048] Furthermore, as shown in Figure 5, the air discharged from each exhaust vent H3, which is arranged in a single row in the front-to-back direction of the seat along the inner area of ​​the left and right side suspension grooves P1, is redirected towards the rear of the seat by the air conditioning airflow blown from the air conditioning outlet AC as described in Figure 1. When no occupant is seated on the seat cushion 3, the air discharged from the other exhaust vents H3 shown in Figure 4 is also redirected towards the rear of the seat by the air conditioning airflow blown from the air conditioning outlet AC (see Figure 1).

[0049] As shown in Figure 2, the air discharged from each exhaust port H3 of the seat cushion 3 is drawn into the interior of the seat back 2 through a corresponding second intake passage 5C formed at the bottom of the front surface of the seat back 2. The second intake passage 5C is formed at positions where its arrangement in the seat width direction substantially overlaps with that of each exhaust port H3, although detailed illustration is omitted. The air drawn from the second intake passage 5C to the second blower 5F is discharged from the rear surface of the seat back 2 through a second exhaust passage 5D that extends from the second blower 5F to the rear of the seat.

[0050] In summary, Sheet 1 according to this embodiment has the following configuration. The reference numerals in parentheses below correspond to the respective configurations shown in the above embodiment.

[0051] In other words, the vehicle seat (1) comprises a seat cushion (3), a seat back (2), and an air conditioning system (5) that circulates air over the surface of these seats. The air conditioning system (5) includes a first intake passage (5A) that draws in air from the front of the seat top surface of the seat cushion (3), a first exhaust passage (5B) that discharges the air drawn in from the first intake passage (5A) from the rear of the seat top surface, and a second intake passage (5C) that draws in the air discharged from the first exhaust passage (5B) from the lower part of the front of the seat back (2).

[0052] With the above configuration, the air drawn in from the front upper surface of the seat cushion (3) can be reused as air to be discharged from the rear upper surface or drawn in from the lower front surface of the seat back (2). Therefore, when cool or warm air from the air conditioner is blown out from the front of the seat, that conditioned air can be taken in and used to efficiently flow over the seat surface of the seat cushion (3) and seat back (2). In addition, the flow of conditioned air blown out from the front of the seat can be used to guide the air discharged from the rear upper surface of the seat cushion (3) to be more easily drawn into the seat back (2).

[0053] Furthermore, the air conditioning system (5) has a second exhaust passage (5D) that discharges air drawn in from the second intake passage (5C) from the rear of the seat back (2). With the above configuration, the airflow discharged from the rear of the seat back (2) can be used to reuse the conditioned air for the rear seat occupants and to promote the stirring and circulation of air in the rear seat space.

[0054] Furthermore, the first exhaust passage (5B) opens at a position away from the seat rearward from the seating contact area (A) that makes contact with the seat when the AM95 dummy is seated on the seat surface. With the above configuration, the first exhaust passage (5B) that discharges air from the rear upper surface of the seat cushion (3) can be formed in a position that is less likely to be crushed by seating pressure and is close to the seat back (2).

[0055] Furthermore, the first exhaust passage (5B) has an exhaust hole (H3) that penetrates the cushion pad (3P), which is the pad material of the seat cushion (3), in the direction of the pad thickness, and a surface groove (H5) that recesses the cushion pad (3P) from the pad surface so that the front side of the exhaust hole (H3) facing the upper surface of the seat extends toward the rear side of the seat.

[0056] According to the above configuration, the surface groove (H5) allows the exhaust port (H3) to open at a position away from the seat contact area (A) and towards the rear of the seat, without having to move or expand it towards the rear of the seat. In addition, the surface groove (H5) allows the air discharged from the exhaust port (H3) to be guided towards the rear of the seat so that it flows along the surface of the seated occupant's buttocks due to the Coanda effect.

[0057] Furthermore, the cushion pad (3P) has a rear suspension groove (P3) extending in the width direction of the seat in the area behind the seat from the surface groove (H5), for suspending the cushion cover (3C), which is the cover material for the seat cushion (3), from the front side of the pad. The surface groove (H5) extends to the rear of the seat to a position that communicates with the rear suspension groove (P3).

[0058] With the above configuration, the air discharged from the surface groove (H5) can be directed to the rear suspension groove (P3). As a result, the air discharged from the exhaust port (H3) can be more appropriately guided to the rear of the seat so that it flows along the surface of the seated occupant's buttocks. In addition, the air discharged from the exhaust port (H3) can be diffused in the width direction of the seat through the rear suspension groove (P3) before being discharged.

[0059] Furthermore, the cushion pad (3P) has a front suspension groove (P2) extending in the seat width direction between the front and rear of the seat surface for suspending the cushion cover (3C), which is the cover material for the seat cushion (3), from the front side of the pad. The air conditioning system (5) has a first blower (5E) located in front of the seat, further forward than the front suspension groove (P2), which applies suction pressure to the first intake passage (5A). The first exhaust passage (5B) has an exhaust groove (H4) that recesses the cushion pad (3P) from the back side of the pad so that the air discharged from the first blower (5E) flows across the front suspension groove (P2) to the rear of the seat.

[0060] With the above configuration, the first blower (5E) can be positioned close to the first intake passage (5A), and a high negative pressure can be applied to the first intake passage (5A). Furthermore, even if the first blower (5E) is positioned in front of the seat relative to the front suspension groove (P2), the air drawn in can be properly discharged from the rear upper surface of the seat cushion (3) through the exhaust groove (H4) that extends across the front suspension groove (P2).

[0061] Regarding other embodiments: Although the embodiments of the present invention have been described above using one embodiment, the present invention can be implemented in various forms other than those described above.

[0062] 1. The vehicle seat of the present invention may be used not only as an automobile seat, but also as a seat for other vehicles such as trains, aircraft, and ships. Furthermore, the vehicle seat may be configured as a bench seat capable of seating two or three people in the same row, or as separate single seats. In addition, the vehicle seat may be configured not only as a front seat of an automobile, but also as a second or third-row rear seat.

[0063] 2. The air conditioning system may be configured to draw in air from a second intake passage in the seatback and discharge it from the upper front of the seatback or from the side of the seat. If a second exhaust passage is provided to discharge air drawn in from the second intake passage in the seatback from the rear of the seat, this second exhaust passage may be located at the top of the seatback as well as the bottom.

[0064] 3. The first exhaust passage, which discharges air from the rear of the seat surface of the seat cushion, may be configured to open only within the seating contact area that makes contact with the seat when the AM95 dummy is seated, without deviating from that area. The first exhaust passage may be configured such that the surface grooves formed in the exhaust holes lined up at its rearmost position do not communicate with the rear suspension grooves formed on the rear side of the seat.

[0065] 4. The first blower may be configured to be located directly below the rear of the seat cushion where the first exhaust passage is formed, rather than directly below the front of the seat cushion where the first intake passage is formed. [Explanation of symbols]

[0066] 1 seat (vehicle seat) 2 seatbacks 3 Seat cushions 3F Cushion Frame 3P Cushion Pad P1 Side Hanging Groove P2 Front suspension groove P3 Rear suspension groove H1 intake port H2 intake groove H3 exhaust hole H4 exhaust vent H5 surface groove 3C Cushion Cover 4 headrests 5. Air conditioning system 5A First intake passage 5B First Exhaust Passage 5C Second intake passage 5D Second Exhaust Passage 5E 1st blower 5F 2nd blower A. Seating contact area AC air conditioner vent BC lid T Triangular gap

Claims

1. A vehicle seat comprising a seat cushion, a seat back, and an air conditioning system for circulating air over the surface of these seats, The aforementioned air conditioning system, The first intake passage draws air from the front of the upper surface of the seat cushion, A first exhaust passage that discharges the air drawn in from the first intake passage from the rear of the upper surface of the seat, A vehicle seat having a second intake passage that draws in air discharged from the first exhaust passage from the lower part of the front surface of the seat back.

2. A vehicle seat according to claim 1, A seat for a vehicle, wherein the air conditioning system further has a second exhaust passage that discharges air drawn in from the second intake passage from the rear surface of the seat back.

3. A vehicle seat according to claim 1 or claim 2, A vehicle seat in which the first exhaust passage opens at a position away from the seating contact area that makes contact with the seat when an AM95 dummy is seated on the upper surface of the seat, towards the rear of the seat.

4. A vehicle seat according to claim 3, A seat for a vehicle, wherein the first exhaust passage has an exhaust hole that penetrates the cushion pad, which is the pad material of the seat cushion, in the direction of the pad thickness, and a surface groove that recesses the cushion pad from the pad surface so that the front portion of the exhaust hole facing the upper surface of the seat extends toward the rear of the seat.

5. A vehicle seat according to claim 4, A vehicle seat wherein the cushion pad has a rear suspension groove extending in the width direction of the seat in a region behind the seat than the surface groove, for suspending a cushion cover, which is a cover material for the seat cushion, from the front side of the pad, and the surface groove extends to the rear of the seat to a position where it communicates with the rear suspension groove.

6. A vehicle seat according to claim 1 or claim 2, The cushion pad, which is the pad material of the seat cushion, has a front suspension groove extending in the seat width direction between the front and rear portions of the upper surface of the seat, for suspending the cushion cover, which is the cover material of the seat cushion, from the front side of the pad. The air conditioning system has a first blower that applies suction pressure to the first intake passage at a position in front of the seat, relative to the front suspension groove. A seat for a vehicle having an exhaust groove that causes the cushion pad to be recessed from the back side of the pad so that the first exhaust passage allows the air discharged from the first blower to flow across the front suspension groove to the rear side of the seat.

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