JP6260500B2 - Vehicle seat - Google Patents

Description

  The present invention relates to a vehicle seat including a centrifugal blower and a duct member (a tubular member that supplies air to the blower).

  As this type of vehicle seat, a vehicle seat including a seat pad, a blower, and a duct member is known (see Patent Document 1). The seat pad is a member that elastically supports an occupant by forming a seat outer shape, and the seating side of the seat pad is covered with a seat cover (a breathable surface material). The blower is a member that discharges air supplied from the axial direction of the fan in the centrifugal direction, and is disposed on the back side of the seat pad. The duct member is a tubular member (bellows shape) that supplies air to the blower, and is disposed between the seat pad and the blower. The end side (the side facing the fan) of the duct member is widened toward the end, and an outlet serving as an air outlet is formed at the center.

  In the known technology, an air passage (through hole) is provided in the seat pad so that air can pass from the seating side toward the back surface side (the thickness direction of the seat pad). The opening on the back side of the air passage is communicated with the blower on the back side of the seat through the duct member. At this time, it is desirable that the outlet portion of the duct member be disposed facing the axial center of the fan, for example, so that air can be supplied in the axial direction. Thus, in the known technique, the air sucked from the air passage is supplied to the fan side of the blower through the duct member. Then, the air blown from the centrifugal direction of the blower is sent to the seating side of the seat pad via another air passage.

JP 2007-126047 A

  By the way, in the above-described seat configuration, the outlet portion of the duct member may be displaced from the facing position of the fan shaft center due to the relationship of the internal space of the seat. In such a configuration, the air that has passed through the outlet is excessively supplied to a part of the fan that is different from the shaft center, and the amount of air that blows out from the centrifugal direction may be biased. For this reason, an unintended loud sound (noise) may occur due to unintentional strong air being blown out from a part (in the centrifugal direction) of the blower. The present invention has been devised in view of the above points, and the problem to be solved by the present invention is to supply air as uniformly as possible to the fan of the blower.

As means for solving the above-mentioned problems, a vehicle seat according to a first aspect of the present invention includes a seat pad that can elastically support an occupant, a flow path portion that penetrates the seat pad from the seating side toward the back side, and a seat pad. A blower that discharges air supplied from the axial direction of the rotating fan disposed in the rear side of the fan in the centrifugal direction, and a tubular duct member through which air can pass. The duct member is disposed between the seat pad and the air blower, and has a first end that is widened and covers the fan side of the air blower, and a second end that can suck air from the flow path And an air outlet that communicates with the second end and opens to the first end. In the present invention, air sucked from the second end of the duct member is supplied to the fan side of the blower from the first end through the outlet. At this time, when the same air is supplied to the fan side as it is, the air is supplied to a part of the fan that is different from the fan axis to a part of the fan that is different from the part of the fan. In this type of configuration, for example, it is desirable that air can be supplied to the fan of the blower as uniformly as possible regardless of the positional relationship between the outlet and the fan.

  Therefore, in the present invention, a planar adjustment member having air permeability is provided in the middle of the air movement path from the outlet portion to a part of the fan. Then, after the air passing through the outlet part hits the adjusting member, the air is supplied to a part of the fan and the other fan parts while passing along the surface direction of the adjusting member while passing therethrough. In the present invention, the air that has passed through the outlet portion hits the adjusting member, thereby preventing the air from being supplied to a part of the fan as much as possible. Then, the air is supplied to the fan side (a part of the fan and other fan parts) while flowing along the surface direction of the adjusting member and is supplied more uniformly to the fan. It will be.

  According to the first aspect of the present invention, air can be supplied as uniformly as possible to the fan of the blower.

It is a schematic side view which shows a part of vehicle seat transparently. It is a perspective view of an air blower and a part of duct member. It is a schematic sectional drawing of a duct member partial and air blower. It is a front view of a part of adjustment member. It is a schematic sectional drawing of a part of duct member of another example, and an air blower. It is a schematic sectional drawing of the adjustment member which concerns on a modification, and some air blowers. It is a schematic side view of a measuring device.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to FIGS. Also, in each figure, a reference symbol F is attached to the front of the vehicle seat, a reference symbol B is attached to the rear of the vehicle seat, a reference symbol UP is provided above the vehicle seat, and a reference symbol DW is provided below the vehicle seat. The vehicle seat 2 in FIG. 1 includes a seat cushion 4, a seat back 6, and a headrest 8. Each of these seat components includes a seat frame that forms a seat skeleton, a seat pad that forms a seat outer shape, and a seat cover that covers the seat pad. In the present embodiment, the seat back 6 is connected to the rear portion of the seat cushion 4 so as to be able to rise and fall, and the headrest 8 is disposed above the seat back 6 (in a standing state).

[Seatback]
In the present embodiment, the seat back 6 includes a basic configuration (seat frame 6F, seat pad 6P, seat cover 6S), a flow path section 10, and configurations described later (the air blower 20, the duct member 30, and the adjustment member 40). (See FIGS. 1 to 4). Here, the seat frame 6F is a substantially inverted arch-shaped frame, and can be formed of a material (metal, hard resin, etc.) having excellent rigidity (see FIG. 1). The seat cover 6S is a surface material that forms a seating surface, and can be formed of a fabric (woven fabric, knitted fabric, non-woven fabric provided with a through hole), and leather (natural leather, synthetic leather) provided with a through hole. The seat pad 6P is a member that can elastically support an occupant and can be formed of a foamed resin such as polyurethane foam. The flow path portion 10 is a passage (space portion) through which air can pass, and is formed from the seating side of the seat pad 6P to the back surface (penetrating in the thickness direction). The flow path portion 10 of the present embodiment is branched on the seating side, and has a plurality of first openings 11 that open to the seat seating side, and a second opening 12 (single) that opens to the back side of the seat.

  In this embodiment, from the viewpoint of improving seat comfort, an air flow is created in the seat back 6 from the seat seating side to the rear side. At this time, while taking in air from the seating side of seat pad 6P (first opening 11 of flow path unit 10), fan 22 of blower 20 on the back side of seat pad 6P (details will be described later) via duct member 30 (details will be described later). To be supplied later). For this reason, the duct member 30 is disposed in the seat (between the seat pad 6P and the blower 20). At this time, the positional relationship between the duct member 30 and the blower 20 is appropriate due to the internal space of the seat. It may not be possible. For example, in the present embodiment, due to the internal space, the portion of the duct member 30 where the air is blown out (exit portion 36 described later) is disposed slightly shifted from the axis A1 of the fan 22 (described later). (See FIG. 3). In this type of configuration, there is a concern that a large sound (noise) may be generated due to excessive supply of air to a part of the fan 22 (in this embodiment, the fan lower portion 22X) different from the axis A1. The Therefore, in the present embodiment, air is uniformly applied to the fan 22 of the blower device 20 as much as possible with the configuration (adjusting member 40) described later, regardless of the positional relationship between the outlet portion 36 and the fan 22 (axial center A1). It was decided to supply. Hereinafter, each configuration will be described in detail.

[Blower]
The blower 20 of the present embodiment is a hollow box (short cubic shape), and includes a fan 22 as a blower mechanism and a cover portion 24 described later (see FIGS. 2 and 3). In the present embodiment, a centrifugal mechanism (mechanism for releasing air supplied from the axial direction in the centrifugal direction) can be used as the fan 22. Examples of this type of fan include multi-blade fans (sirocco fans), plate fans, turbo fans, airfoil fans, and limit load fans. In the present embodiment, the fan 22 is exposed to one side of the air blower 20 and rotates so as to have a substantially circular shape when viewed from the front centered on the center (axial center A1) (substantially circular when viewed from the front). Fan shape). Therefore, the air blower 20 is attached to the seat frame 6F with the fan side facing the back side of the seat pad 6P, and is arranged so as to be able to communicate with the flow path portion 10 via a duct member 30 described later (see FIGS. 1 to 3). ).

  And the cover part 24 is a site | part which is attached to the one side of the air blower 20, and coat | covers the fan 22, and the below-mentioned adjustment member 40 can be attached (refer FIG.2 and FIG.3). The cover portion 24 of the present embodiment is formed of a flat plate member (substantially rectangular member having an opening at the center), and the center opening 24H (substantially circular shape) is an outlet portion 36 of the duct member 30 described later. Is set larger than the opening area. In the present embodiment, the cover 22 covers the fan 22 and the central opening 24H is disposed facing the portion from the center of the fan 22 to the end side (axial center A1, fan lower portion 22X, fan upper portion 22Y). . Thus, in this embodiment, as described later, the air that has passed through the duct member 30 (exit portion 36) is sent to the fan 22 of the blower device 20 through the central opening 24H of the cover portion 24 (central opening 24H). Is provided in the middle of the air movement path from the outlet portion 36 to the fan lower portion 22X).

[Duct member]
The duct member 30 is a tubular member (both ends open) through which air can pass, and is disposed between the seat pad 6P (flow channel portion 10) and the blower 20 (see FIG. 1). The duct member 30 of the present embodiment has a first end portion 31 (details will be described later) disposed on the air blower side and a second end portion 32 disposed on the flow path portion side with reference to the attached state. Here, the second end portion 32 is a tubular portion (substantially rectangular parallelepiped shape in the present embodiment), and can communicate with the flow path portion 10 (second opening 12 side) to suck air. The second end portion 32 is typically provided with flexibility, and is appropriately bent (for example, curved) in the sheet vertical direction or the sheet width direction in consideration of the arrangement relationship between the second opening 12 and the blower 20. Can be made.

  Moreover, the 1st end part 31 is a site | part which spreads in the shape of the end spread, and can cover the fan side of the air blower 20 (refer FIGS. 1-3). The second end portion 32 of the present embodiment has a slightly short substantially cubic shape, and has a main body portion (upper surface portion 31a, side surface portion 31b, open portion 31c), a connecting portion 34, and an outlet portion 36 ( (See FIGS. 2 and 3). The upper surface portion 31a is a flat plate portion that is disposed facing the fan side of the blower device 20 at an appropriate interval, and the side surface portion 31b is a flat plate formed by bending the end portion side of the upper surface portion 31a to the blower device side. It is a part. And the open part 31c is an opening of the side part which faces the upper surface part 31a, and is set to the opening dimension which can cover the fan side of the blower 20.

  The connecting portion 34 is a hollow tubular (slightly short) portion that communicates with the upper surface portion 31 a and can communicate with the second end portion 32. The connecting portion 34 of the present embodiment is slightly diametrical (same shape as the same end portion) than the second end portion 32 and can be assembled to the distal end side of the second end portion 32. And in this embodiment, the connection part 34 is provided in the lower side (below the facing position of axial center A1) of the upper surface part 31a on the basis of the time of attachment of the duct member 30 from the relationship of the internal space of a sheet | seat (FIG. 3). The outlet portion 36 is a portion that communicates with the second end portion 32 and air sucked from the second end portion 32 blows out toward the first end portion 31 side. The outlet portion 36 of the present embodiment has an opening area smaller than the outer shape of the fan (the same shape and opening area as the connecting portion 34), and is the same as the position where the connecting portion 34 is formed (slightly below the upper surface portion 31a). Placed in position.

  Here, the height dimension T1 of the first end portion 31 (the dimension between the upper surface portion 31a and the cover portion 24) is within a range that does not extremely impede the flow of air (the flow of air along the adjusting member 40 described later). It can be set (see FIG. 3). At this time, a sufficient height dimension can be taken as in another example of the first end portion 31A (elongate substantially cubic shape) while taking into account the internal space of the sheet (see FIG. 5). In this way, by using the relatively large first end portion 31A (set to a height dimension T2 that is 2 to 4 times that of the first end portion 31 as a standard product), as described later, along the adjustment member 40 Air can easily flow (becomes conducive to noise reduction).

[Adjustment member]
The adjustment member 40 is a planar member having air permeability, and is provided in the middle of an air inflow (movement) path from the outlet portion 36 to the fan 22 (see FIGS. 2 to 4). As this type of adjusting member 40, a metal or resin net (mesh), a fabric having a plurality of through holes (woven fabric, knitted fabric, non-woven fabric), a fiber laminate having a plurality of through holes, and three-dimensionally the fibers A 3D net body that is entangled can be exemplified. And the adjustment member 40 of this embodiment consists of a net | network material (larger than the exit part 36) of the magnitude | size which covers the center opening 24H, and is provided with the below-mentioned air permeability.

(Adjustment member air permeability)
And it is desirable for the adjustment member 40 to have such a degree of air permeability that the air does not extremely stagnate on the surface side facing the outlet portion 36 (see FIGS. 3 and 4). For example, when a mesh material is used as the adjustment member 40, it is preferable to set the roughness of the mesh (the numerical value of the mesh defined by “JIS G 3555” (hereinafter also referred to as JIS mesh value)) to be larger than 6. More preferably, it is set to 7 to 200, and more preferably 9 to 100. In “JIS G 3555”, the numerical value of the roughness of the net (JIS mesh value) is expressed as a numerical value indicating how many eyes per 25.4 mm. And when the coarseness of the adjustment member 40 is 6 or less, air may be supplied to the fan side as it is, and the noise reduction effect may not be sufficiently exhibited. Also, if the coarseness of the adjustment member 40 is larger than 200, the air is extremely stagnant on the surface side facing the outlet portion 36 and the air is not sufficiently supplied to the blower 20 (ensure an appropriate air supply amount). To increase the output of the blower to increase the sound).

(Shape of adjustment member)
Here, the shape of the adjusting member 40 is not particularly limited as long as the outlet portion 36 (or the central opening 24H) can be covered (see FIG. 2). For example, the adjustment member 40 of the present embodiment is planar (flat), and is wider than the outlet portion 36, and is arranged facing it (see FIG. 3). In addition to this, the hemispherical adjustment member 40A shown in the first modification, or an irregularly shaped adjustment member such as a cone (cone, polygonal pyramid, etc.) or a half-columnar (cylindrical, polygonal prism, etc.) in a laid state is used. (See FIG. 6). Then, the three-dimensional shape of the adjustment member 40A is made into a hemispherical shape, for example, so that the shape of the adjustment member 40A gradually separates from the outlet 36 as it goes from a part of the fan 22 (fan lower part 22X) to the other fan part side (fan upper part 22Y). (See FIG. 3). By doing so, air can flow uniformly along the adjustment member 40 </ b> A and the air can be supplied uniformly by the fan 22.

[Installation work of duct member (adjustment member)]
1 to 3, after the adjustment member 40 is attached to the duct member 30, these are disposed between the flow path unit 10 and the blower device 20. At this time, in this embodiment, the adjustment member 40 is fixed to the air blower side (cover part 24), and the center opening 24H is covered (refer FIG. 3). In this way, the adjustment member 40 can be provided in the middle of the air movement path from the outlet portion 36 to the fan 22. Next, the second end portion 32 of the duct member 30 is communicated with the flow path portion 10 (second opening 12) while being appropriately bent and deformed, and at the fan end of the blower device 20 at the first end portion 31 of the duct member 30 ( The entire outer shape of the substantially circular fan during rotation is covered (see FIG. 1). At this time, in the present embodiment, the outlet portion 36 is disposed on the lower side of the upper surface portion 31a and is opposed to the lower side (fan lower portion 22X) side of the axis A1 of the fan 22 (see FIGS. 2 and 3). reference).

[Driving device]
With reference to FIG. 1, the air blower 20 is driven, and the flow of the air which flows into the seat back 6 from the seating side to the rear side is created. At this time, in the present embodiment, as described above, since the outlet portion 36 is disposed facing the position different from the axis A1, a large sound (noise) is generated due to a deviation in the amount of air blown from the centrifugal direction. (See FIGS. 2 and 3). That is, in the present embodiment, the air that has passed through the outlet portion 36 is transferred to the fan lower portion 22X (a part of the fan different from the axis A1) and other fan portions (for example, the fan upper portion 22Y on the upper side of the axis A1) More will be supplied.

  Therefore, in the present embodiment, the adjustment member 40 is provided in the middle of the air movement path from the outlet portion 36 to the fan lower portion 22X. Then, after the air passing through the outlet portion 36 hits the adjusting member 40, the air is supplied to the fan lower portion 22X and the fan upper portion 22Y while passing along the surface direction of the adjusting member 40 while passing therethrough. In this way, in the present embodiment, the air that has passed through the outlet portion 36 hits the adjusting member 40, thereby preventing the air from being supplied to the fan lower portion 22X as much as possible (supplying an extremely large amount of air only to a part of the fan). Is preferably prevented). The air is supplied to the fan 22 (22X, 22Y, etc.) more uniformly by flowing along the surface direction of the adjusting member 40 and being supplied to the fan side while passing through the air. . For this reason, according to this embodiment, by supplying air to the fan 22 as uniformly as possible with the adjustment member 40, the noise of the air blower 20 and the duct member 30 can be reduced suitably.

Hereinafter, although this embodiment is described based on an example, the present invention is not limited to the example.
[Example 1]
In the present embodiment, as the adjustment member (40) in FIG. 7, a wire mesh (manufactured by GREENPARTS, trade name: garden fluid replacement medium 7515586, material: stainless steel, roughness of eyes: 9 (equivalent to JIS mesh value 9) , Eye shape: substantially square shape, three-dimensional shape: flat surface shape). And what attached the adjustment member (40) of a present Example to the duct member (L2: 29 mm) shown in FIG. 5 was made into the 1st end part (31A) of the duct member (30) of Example 1. FIG.

[Example 2]
In this embodiment, as an adjustment member, a wire mesh (manufactured by Liberty Corporation, trade name: LC283, material: stainless steel, mesh roughness: 16 (equivalent to JIS mesh value 16), eye shape: substantially square shape, three-dimensional shape: Hemisphere with a curvature radius of 150 mm) was used. Other conditions were the same as in Example 1.

[Example 3]
In this embodiment, as an adjusting member, a wire mesh (manufactured by GREENPARTS, trade name: gardening fluid replacement fine mesh 751587, material: stainless steel, mesh roughness: 19 (equivalent to JIS mesh value 20), eye shape: substantially square Shape, three-dimensional shape: flat surface shape). Other conditions were the same as in Example 1.

[Example 4]
In this embodiment, as the adjustment member, a highly breathable mesh material (manufactured by Toyota Home, trade name: criamide (registered trademark), material: polypropylene (PP), mesh roughness: 24 (equivalent to JIS mesh value 24) , Eye shape: substantially square shape, three-dimensional shape: flat surface shape). Other conditions were the same as in Example 1.

[Example 5]
In this example, a wire mesh (material: stainless steel, mesh roughness: 38 (equivalent to JIS mesh value 40), eye shape: substantially square shape, solid shape: flat surface shape) was used as the adjustment member. Other conditions were the same as in Example 1.

[Example 6]
In this embodiment, a wire mesh (material: aluminum, mesh roughness: 43 (equivalent to JIS mesh value 45), eye shape: substantially square shape, solid shape: flat surface shape) was used as the adjustment member. Other conditions were the same as in Example 1.

[Example 7]
In this embodiment, a wire mesh (material: stainless steel, eye shape: approximately rhombus shape, solid shape: flat surface shape) was used as the adjustment member. Other conditions were the same as in Example 1.

[Example 8]
In the present embodiment, a thread net (material: stainless steel, net roughness: 102 (equivalent to JIS mesh value 100), eye shape: substantially square shape, solid shape: flat surface shape) was used as the adjustment member. Other conditions were the same as in Example 1.

[Example 9]
In this example, a 3D net (manufactured by Asahi Kasei Co., Ltd., trade name: AKE64030, material: polyethylene terephthalate (PET) and nylon (NY), solid shape: flat surface shape)) was used as the adjustment member. Other conditions were the same as in Example 1.

[Comparative Example 1]
In this comparative example 1, the first end (L2: 29 mm) of the duct member of FIG.

[Comparative Example 2]
In this comparative example, as an adjustment member, a resin net (Daiso Co., Ltd., trade name: Horticulture bowl bottom net, material: polypropylene (PP), net roughness: 6 (equivalent to JIS mesh value 6), eye shape: A substantially square shape and a three-dimensional shape: a flat surface shape) were used. Other conditions were the same as in Example 1.

[First test method]
In this test, the test apparatus shown in FIG. 7 was assembled. At this time, an existing drive source (power source: PAS 20-36, 12 V, signal: 3320 A (FG), pulse: 500 Hz, 0-5 V, 15 to 50%) was used as a fan drive source. As the first measuring instrument (51), a microphone (manufactured by RION, product number: UC-53A (preamplifier NH22)) and a measuring instrument (manufactured by RION, product number: SA-01) were used.

And after attaching the 1st end part (31A) of Example 1 to an air blower (20), it arrange | positions in a predetermined position with several tripods, and measured these noises with the 1st measuring device (51). (See FIG. 7). At this time, four tripods (S1, S2, etc., each height dimension L3: 800 mm) were arranged at each vertex position of the square shape. The four tripods (S1, S2) are held with the duct member side facing upward and the air blower (20) is held at a predetermined height (L2: 710 mm) in a state of being suspended by the threads extending from the four tripods. ) At the center position. Then, the first measuring instrument (51) is fixed to another tripod S1 and is held on the side of the first end part (31A) (the connecting part side) and at a predetermined distance (L1: 1000 mm) therefrom. did. In this state, the amount of noise was measured by the first measuring instrument (51) while driving the blower (20) under predetermined conditions (fan air volume: 112 m ³ / h, output: 85%). In addition, noise was measured under the same conditions for the duct members (first end portions) of Examples 2 to 9 and Comparative Examples.

[Second test method]
In this test, using the same equipment and conditions as in the first test method, the noise emitted from the duct members of Examples 2 to 9 and each comparative example was measured with the second measuring instrument (52) (see FIG. 7). reference). As the second measuring instrument (52), an apparatus having the same configuration as that of the first measuring instrument (51) was used. In this test, the second measuring instrument (52) was held in a state of being suspended by another tripod (S3), and was held immediately above the axis of the fan and at a predetermined distance (L4: 1000 mm). In this state, the amount of noise was measured by the second measuring instrument (52) while driving the blower (20) under the above conditions.

[Results and discussion]
The following [Table 1] shows the first test results of each example and each comparative example. Moreover, the following [Table 2] shows the 2nd test result of each Example and each comparative example.

  With reference to [Table 1], compared with Comparative Example 1, all of Examples 1 to 9 had a preferable noise reduction effect. From this, it was found that the noise generation of the blower can be prevented as much as possible by supplying air to the blower as uniformly as possible with the adjusting members of Examples 1 to 9. Further, referring to [Table 2], there was a preferable noise reduction effect in Examples 2 to 9. From this, it was found that by supplying the air to the air blower as uniformly as possible with the adjustment members of Examples 2 to 9, there was a suitable noise reduction effect in almost all directions of the air blower. .

  The vehicle seat of the present embodiment is not limited to the above-described embodiment, and can take other various embodiments. For example, in the present embodiment, an example in which air is excessively supplied to a part of the fan 22 due to the deviation of the outlet portion 36 and the axis A1 has been described. In addition to this, as an example in which air is excessively supplied to a part of the fan, when the outlet portion has a substantially rectangular shape (different from the outer shape of the fan) as in this embodiment, a plurality of outlet portions are formed. Can be assumed. Further, the opening size of the outlet portion may be set larger than the central opening. In this case, for example, the central opening can be opened only in a part of the fan.

  In the present embodiment, the configuration (shape, dimension, number of arrangement, arrangement position, etc.) of the adjustment member 40 is exemplified, but the configuration of the member is not limited. For example, a plurality or a single adjustment member can be provided at an appropriate position in the middle of the air movement path. The adjustment member preferably has a size that can cover most of the fan, but covers only a part of the fan (for example, smaller than the central opening of the cover part) unless the noise reduction effect is extremely impaired. Dimensions). Moreover, in this embodiment, although the structure of the flow-path part 10, the air blower 20, and the duct member 30 was illustrated, the structure of these same members etc. can be suitably changed according to a sheet | seat structure. For example, the outlet portion of the duct member can be formed so as to be shifted upward with respect to the fan axis with respect to the mounted state, or can be formed so as to be shifted in the seat width direction. Further, the configuration (shape, dimensions, arrangement position, etc.) of the duct member (first end portion and second end portion) can be appropriately changed in consideration of the internal space of the sheet.

  In the present embodiment, the seat back 6 has been described as an example, but the configuration of the present embodiment can be applied to various seat components such as a seat cushion. In addition to the vehicle seat, the configuration of the present embodiment can be applied to all vehicle seats such as aircraft and trains.

2 Vehicle Seat 4 Seat Cushion 6 Seat Back 8 Headrest 6S Seat Cover 6P Seat Pad 6F Seat Frame 10 Flow Channel Part 20 Blower Device 22 Fan 22X Fan Lower Part 22Y Fan Upper Part 24 Cover Part 30 Duct Member 31 First End 32 Second End portion 34 Connecting portion 36 Outlet portion 40 Adjustment member A1 Fan axial center

Claims (1)

A seat pad that can elastically support an occupant, a flow path portion that penetrates the seat pad from the seating side toward the back side, and an axial center direction of a rotating fan that is disposed on the back side of the seat pad and rotates. A blower that discharges the air in the centrifugal direction and a tubular duct member through which the air can pass. The duct member is disposed between the seat pad and the blower and has a divergent shape. A first end portion covering the fan side of the blower, a second end portion capable of sucking air from the flow passage portion, and an air outlet communicating with the second end portion and opening to the one end portion side And
When the air sucked from the second end of the duct member is supplied as it is from the first end to the fan side of the blower through the outlet, the fan is different from the fan axis. In part, in a vehicle seat configured to be supplied with more air than other fan parts different from the part,
By providing a planar adjustment member having air permeability in the middle of the air movement path from the outlet part to a part of the fan, air that has passed through the outlet part hits the adjustment member. A vehicle seat configured to be supplied to a part of the fan and the other fan part while passing along the surface direction of the adjusting member while passing therethrough.