WO2008038476A1

WO2008038476A1 - Seat surface cooling and heating equipment for vehicle seat

Info

Publication number: WO2008038476A1
Application number: PCT/JP2007/066204
Authority: WO
Inventors: Naohisa Kamiyama; Hiroshi Soma; Toshio Ohashi
Original assignee: Calsonic Kansei Corporation
Priority date: 2006-09-27
Filing date: 2007-08-21
Publication date: 2008-04-03

Abstract

Not only are intra-sheet heat exchangers embedded in the interiors of seat face of seat back and seat face of seat cushion but also an extra-seat heat exchanger is disposed on the undersurface side of the seat cushion. Heat exchange medium is circulated between the intra-sheet heat exchangers and the extra-seat heat exchanger by medium circulating means. The heat exchange medium fed from the extra-seat heat exchanger to the intra-sheet heat exchangers is warmed by a medium warming heater fitted to the extra-seat heat exchanger, so that the heat exchange medium cooled or warmed is circulated through the intra-sheet heat exchangers. Accordingly, the seat faces can be evenly cooled or warmed.

Description

Specification

Seat cooling / heating device for vehicle seat

Technical field

TECHNICAL FIELD [0001] The present invention relates to a seat surface cooling and heating device that cools and heats a seat surface that is a surface side of a vehicle seat including a seat cushion and a seat back.

Background art

[0002] As a conventional device for cooling and heating a vehicle seat, heat generated by a heat source having a cooling or heating function is transferred to a temperature-adjusted portion serving as a seat surface via a heat conducting unit, while being supplied from a blower It is known to cool and heat the seat surface by blowing out the cool and warm air blown from a large number of blow holes formed over the entire surface of the temperature controlled part through the convection part (for example, JP 2003-42590 A). Issue gazette).

[0003] However, in the conventional seat surface cooling and heating apparatus, which has power, the structure is such that the heat of one heat source is transferred to the temperature controlled part via the heat conduction part, so the temperature of the heat conduction part is There was a problem that the temperature was high at the part close to the heat source and low at the part far from the heat source, and temperature unevenness occurred in the temperature controlled part, that is, the sheet surface.

[0004] Further, when the cool and warm air of the blower is blown out from the blowout holes of the temperature controlled portion to cool and heat the seat surface, the amount of air blown from the blowout holes depends on the direction of the blown air from the blower. As a result, there was also a problem that temperature unevenness occurred on the sheet surface.

[0005] Accordingly, an object of the present invention is to provide a vehicle seat surface air-conditioning / heating device that can suppress the occurrence of uneven temperature on the air-conditioning seat surface.

Disclosure of the invention

[0006] In the present invention, the in-seat heat exchanger embedded in the seat surface which is the front surface side of the vehicle seat including a seat cushion and a seat back, and the rear surface side of the vehicle seat are disposed. An outside seat heat exchanger, a medium circulation mechanism for circulating a heat exchange medium between the inside seat heat exchanger and the outside seat heat exchanger, and the outside seat heat exchanger. Heat the heat exchanger power and the heat exchange medium supplied to the in-seat heat exchanger. A medium heating heater that operates the medium circulation mechanism during cooling of the seat surface to supply the low temperature medium of the heat exchanger outside the sheet to the heat exchanger within the seat, and during heating, the medium The heat exchange medium heated by operating the heater is supplied to the in-seat heat exchanger.

[0007] In the present invention, the medium flow path of the heat exchanger outside the sheet and the heater-side medium flow path of the medium heating heater are arranged in parallel, and the medium flow path and the heater are arranged in parallel. A flow path switching mechanism may be provided at a branch portion with the side medium flow path.

[0008] In the present invention, the in-seat heat exchanger embedded in the seat surface on the front side of the vehicle seat having a seat cushion and a seat back, and the back surface of the vehicle seat A heat exchanger outside the seat disposed on the side, a medium circulation means for circulating a heat exchange medium between the heat exchanger inside the seat and the heat exchanger outside the seat, and the heat exchanger inside the seat. An electric heater to be fed, and when the seat surface is cooled, the medium circulating means is operated to supply the low temperature medium of the outside seat heat exchanger to the in-seat heat exchanger, and at the time of heating, the electric heater You can warm up by operating!

[0009] In the present invention, the heating wire of the electric heater may be arranged so as to be shifted from the medium flow path of the in-seat heat exchanger.

[0010] In the present invention, the in-sheet heat exchanger may join a plurality of flexible sheets while forming a medium flow path between them.

[0011] In the present invention, a cooling fan for the heat exchanger outside the seat may be provided.

[0012] Further, in the present invention, a duct for introducing conditioned air conditioned by an air conditioner mounted on a vehicle may be connected to the heat exchanger outside the seat! /.

In the present invention, a Peltier element that is cooled by energization may be provided in the heat exchanger outside the seat.

Brief Description of Drawings

FIG. 1 is a side sectional view of a vehicle seat equipped with a seat surface cooling / heating device according to a first embodiment of the present invention.

FIG. 2 is a schematic configuration diagram showing the seat surface cooling / heating device according to the first embodiment of the present invention. FIG. 3 is a partially enlarged sectional view taken along line III-III in FIG.

FIG. 4 is an enlarged cross-sectional view of an external heat exchanger according to the second embodiment of the present invention.

[Fig. 5] Fig. 5 is an enlarged cross-sectional view of a heat exchanger outside a seat that applies force to the third embodiment of the present invention.

FIG. 6 is a side sectional view of a vehicle seat equipped with a seat surface cooling / heating device according to a fourth embodiment of the present invention.

[Fig. 7] Fig. 7 is a schematic configuration diagram showing, in an exploded manner, the seat surface cooling / heating device according to the fourth embodiment of the present invention.

FIG. 8 is an enlarged schematic configuration diagram showing a force, a heat exchanger in a seat and an electric heater according to a fourth embodiment of the present invention.

[FIG. 9] FIG. 9 is an enlarged sectional view taken along line IX-IX in FIG.

FIG. 10 is an enlarged cross-sectional view of an external heat exchanger according to the fifth embodiment of the present invention.

BEST MODE FOR CARRYING OUT THE INVENTION

Hereinafter, a seat surface cooling and heating apparatus according to an embodiment of the present invention will be described in detail with reference to the drawings. In addition, about the same component about each following embodiment, while attaching | subjecting a common code | symbol, the overlapping description is abbreviate | omitted.

First Embodiment FIG. 1 is a side sectional view of a vehicle seat equipped with a seat surface cooling / heating device according to the present embodiment, and FIG. 2 is a schematic configuration diagram showing the seat surface cooling / heating device in an exploded manner. Yes

FIG. 3 is a partially enlarged sectional view taken along line III-III in FIG.

[0017] As shown in FIG. 1, a vehicle seat 1 to which the seat surface cooling and heating device 10 that applies force to the present embodiment is applied is schematically configured to include a seat cushion 2, a seat back 3, and a headrest 4. The cushion 2 is installed on the vehicle body floor 6 via support legs (for example, a slide device) 5.

[0018] Then, the vehicle seat 1 includes an upper surface and a seat back that are the front side of the seat cushion 2.

The front surface which is the surface side of 3 is the sheet surface 2a, 3a.

[0019] Then, as shown in FIG. 2, the seat surface cooling and heating apparatus 10 is configured to seat the seat cushion 2. In-seat heat exchanger 11 embedded in the seat surface 3a of the surface 2a and the seat back 3, and the seat-external heat exchanger 12 disposed on the lower surface 2b side of the seat cushion 2 which is the back surface of the vehicle seat 1 And a medium circulation mechanism 13 for circulating a heat exchange medium between the in-seat heat exchanger 11 and the outside-sheet heat exchanger 12, and the outside-sheet heat exchanger 12, and the outside-sheet heat exchanger And a medium heating heater 14 for heating the heat exchange medium supplied from 12 to the in-seat heat exchanger 11.

[0020] When the seat surfaces 2a and 3a are cooled, the seat surface cooling / heating device 10 operates the medium circulation mechanism 13 to supply the low temperature medium of the out-seat heat exchanger 12 to the in-seat heat exchanger 11, while heating Sometimes, the heat exchanger medium heated by operating the medium heater 14 is supplied to the in-seat heat exchanger 11.

Here, in the present embodiment, the in-seat heat exchanger 11 includes a seat cushion side heat exchanger 1 lc provided in the seat cushion 2 and a seat provided in the seat back 3, as shown in FIG. A knock side heat exchanger l ib. In FIG. 2, the seat cushion side heat exchanger 11c and the seat back side heat exchanger l ib are collectively shown as one in-seat heat exchanger 11 for convenience.

[0022] The seat outside heat exchanger 12 is disposed under the seat cushion 2, and the seat outside heat exchanger 12, the seat cushion side heat exchanger 1 lc, and the seat back side heat exchanger 1 lb In other words, the in-seat heat exchanger 11) is connected through a seat cushion side circulation path 15 and a seat back side circulation path 16 for circulating a heat exchange medium such as engine cooling water.

[0023] The seat cushion side circulation path 15 includes an outward path 15a and a return path 15b communicating the seat outer heat exchanger 12 and the seat cushion side heat exchanger 11c, and the seat back side circulation path 16 An outward path 16a and a return path 16b communicating with the exchanger 12 and the seat back side heat exchanger l ib are provided, and the medium circulation mechanism 13 is disposed in each of the return paths 15b and 16b.

As shown in FIG. 2, the medium circulation mechanism 13 is configured to include an electric water pump 13a and a reservoir tank 13b arranged in series upstream of the water pump 13a.

[0025] The medium circulation mechanism 13 operates the water pump 13a to thereby enable seat cushions. The heat exchange medium in the front side heat exchanger 1 lc and the seat back side heat exchanger 1 lb is sucked through the reservoir tank 13b and pumped toward the heat exchanger 12 outside the seat. The heat exchange medium pumped to the heat exchanger 12 outside the seat flows through the medium flow path 12p arranged in a bellows shape in the heat exchanger 12 outside the seat, and is then distributed to the forward paths 15a and 16a to be seat cushions. Side heat exchanger 1 lc and seat back side heat exchanger 1 lb flow into the seat cushion side heat exchanger 1 lc and seat back side heat exchanger 1 lb. After circulating lp, it is collected in the reservoir tank 13b.

[0026] Then, by being sucked again from the reservoir tank 13b to the water pump 13a, the heat exchange medium becomes the heat exchanger 12 outside the seat, the heat exchanger 11c on the seat cushion side, and the heat exchange on the seat back side. Between 1 lb and 1 vessel.

As shown in FIG. 2, the medium heating heater 14 includes a heater-side medium flow path 14 p arranged in a bellows shape. The heater-side medium flow path 14p is provided with a heating wire 14h, and the heat exchange medium in the heater-side medium flow path 14p is heated by energizing the heating wire 14h.

[0028] Here, in the present embodiment, the medium flow path 12p of the outside-seat heat exchanger 12 and the medium heating heater

14 heater side medium flow paths 14p are arranged in parallel, and a switching valve 17 as a flow path switching mechanism is provided at a branch portion T between the medium flow paths 12p and the heater side medium flow paths 14p. .

That is, the heater-side medium flow path 14p arranged in parallel with the medium flow path 12p is communicated with the forward paths 15a and 16a after being branched by the return paths 15b and 16b at the branch portion T. Let's go. Then, by switching the switching valve 17, the heat exchange medium discharged from the water pump 13a passes through the medium flow path 12p and is supplied to the forward paths 15a and 16a and the heater side medium flow path 14p. Thus, the paths supplied to the forward paths 15a and 16a are switched.

[0030] Further, as shown in FIG. 3, the seat cushion side heat exchanger 1 lc and the seat back side heat exchanger 1 lb include two flexible sheets 18a and 18b, and a medium between them. It is formed by high-frequency welding W and joining while forming the flow path l ip. As the flexible sheets 18a and 18b, for example, a sheet made of ether urethane and having a thickness of about 0.3 mm is used.

[0031] With the configuration described above, according to the seat surface cooling / heating device 10 for the vehicle seat 1 according to the present embodiment, when the vehicle is parked for a long time under the hot summer sun, the direct sunlight irradiated in the vehicle interior As a result, the seat cushion 2 on the front side of the vehicle seat 1 and the seat surfaces 2a and 3a of the seat back 3 are heated. At this time, the back side of the vehicle seat 1, that is, the lower surface 2b of the seat cushion 2 and the rear side surface of the seat back 3, particularly the lower surface 2b of the seat cushion 2 in this embodiment is blocked by direct sunlight, The atmospheric temperature in the passenger compartment is substantially the same.

[0032] For this reason, the seat-side heat exchanger 12 disposed on the lower surface 2b side of the seat cushion 2 is in a low-temperature state substantially equal to the vehicle interior temperature, while the seat cushion 2 and the seat back 3 are seat surfaces. The seat cushion side heat exchanger 11c and the seat back side heat exchanger 1 lb placed on the 2a, 3a side will be hot!

Here, in the present embodiment, the switching valve 17 is switched to the seat outside heat exchanger 12 side, and the water pump 13a of the medium circulation mechanism 13 is operated to heat the seat outside heat exchanger 12 and the seat cushion side heat. Circulate the heat exchange medium between the exchanger 1 lc and the seat back heat exchanger 1 lb.

[0034] Thereby, the heat exchange medium in a low temperature state circulates through the medium flow path l ip of the seat cushion side heat exchanger 1 lc and the seat back side heat exchanger l ib. Therefore, the seat surfaces 2a and 3a on which the seat cushion side heat exchanger 11c and the seat back side heat exchanger ib are provided are uniformly and uniformly cooled. In this way, the occupant can sit on the vehicle seat 1 that has been cooled to approximately the vehicle interior temperature.

[0035] On the other hand, when the vehicle interior temperature is lowered and the seat surfaces 2a and 3a are cold in cold weather, the switching valve 17 is moved to the heater side medium flow path 14p side of the medium heating heater 14. The medium heater 14 is switched to operate (that is, the heating wire 14h is energized).

Thereby, the heat exchange medium heated by the medium heating heater 14 is supplied to the seat cushion side heat exchanger 11c and the seat back side heat exchanger l ib. Therefore, the seat surfaces 2a and 3a on which the seat tack side heat exchanger 1 lc and the seat back side heat exchanger 1 lb are provided are heated evenly as a whole.

Furthermore, in the present embodiment, the seat cushion side heat exchanger 1 lc and the seat back side heat exchanger l ib are formed, and the flexible flexible sheets 18a and 18b are formed between them, and the medium flow path l ip is formed therebetween. However, it was formed by joining. For this reason, the medium flow path l ip can be set in a collapsed state during normal times when the heat exchange medium is not supplied, so the vehicle seat 1 should be seated without a sense of incongruity. In addition, when the heat exchange medium is supplied, the medium flow path l ip expands and the medium flow can be performed smoothly.

(Second Embodiment) FIG. 4 is an enlarged cross-sectional view of a heat exchanger outside a seat according to this embodiment.

[0039] The seat surface cooling and heating apparatus according to the present embodiment is basically the same as the seat surface cooling and heating apparatus 10 of the first embodiment, and the heat exchange medium of the outside seat heat exchanger 12 is used as the in-seat heat exchanger 11. It is supposed to circulate. However, in this embodiment, the cooling fan 20 is provided in the heat exchanger 12 outside the seat.

[0040] Therefore, according to the present embodiment, the cooling fan 20 is provided in the out-of-seat heat exchanger 12, and therefore the out-of-seat heat exchanger 12 can improve the cooling efficiency of the heat exchange medium by the blowing of the cooling fan 20. As a result, the cooling efficiency of the in-seat heat exchanger 11 can be increased to further improve the cooling effect of the seat surfaces 2a and 3a (see FIG. 1).

(Third Embodiment) FIG. 5 is an enlarged cross-sectional view of a heat exchanger outside a seat according to this embodiment.

[0042] The seat surface cooling and heating apparatus of the present embodiment is basically similar to the seat surface cooling and heating apparatus 10 of the first embodiment, in which the heat exchange medium of the outside seat heat exchanger 12 is changed to the in-seat heat exchanger 11. It is designed to circulate. However, in the present embodiment, a duct 21 for introducing conditioned air conditioned by an air conditioner (not shown) mounted on the vehicle is connected to the heat exchanger 12 outside the seat. In this embodiment, an opening / closing door 22 is provided on the entrance side of the duct 21.

[0043] Therefore, according to the present embodiment, with the air conditioner operated, the open / close door 22 is opened as shown by the solid line in the figure, so that the outside air heat is supplied by the conditioned air supplied from the duct 21. The cooling efficiency of the exchanger 12 can be increased, and consequently the cooling efficiency of the in-seat heat exchanger 11 can be increased to further improve the cooling effect of the seat surfaces 2a and 3a (see FIG. 1).

[0044] In particular, in the present embodiment, by setting the air conditioner to the cooling mode and supplying the cooling air from the duct 21 to the heat exchanger 12 outside the seat, the cooling efficiency of the heat exchanger 12 outside the seat is further increased, Further cooling effects of the seat surfaces 2a and 3a can be expected.

(Fourth Embodiment) FIG. 6 shows a vehicle equipped with a seat surface cooling / heating device according to this embodiment. FIG. 7 is a schematic configuration diagram showing the seat surface cooling / heating device in an expanded state, FIG. 8 is a schematic configuration diagram showing the in-seat heat exchanger and the electric heater in an enlarged manner, and FIG. FIG. 8 is an enlarged sectional view taken along line A—A in FIG.

As shown in FIG. 6, a vehicle seat 1A to which the seat surface cooling / heating device 10 that applies force to the present embodiment is applied is schematically configured to include a seat cushion 2, a seat back 3, and a headrest 4. The cushion 2 is installed on the vehicle body floor 6 via support legs (for example, a slide device) 5.

Then, as shown in FIG. 7, the seat surface cooling / heating device 10A includes an in-seat heat exchanger 11A embedded in the seat surface 2a of the seat cushion 2 and the seat surface 3a of the seat back 3, and a vehicle. Heat exchange medium is circulated between the seat outside heat exchanger 12A located on the bottom 2b side of the seat cushion 2 on the back side of the seat 1 and the inside seat heat exchanger 11A and the outside seat heat exchanger 12A. A medium circulation mechanism 13 to be operated, and an electric heater 14A incorporated in the in-seat heat exchanger 11A.

[0048] During cooling of the seat surfaces 2a and 3a, the seat surface cooling / heating device 10A operates the medium circulation mechanism 13 to supply the low temperature medium of the seat outer heat exchanger 12A to the seat heat exchanger 11A, During heating, the electric heater 14A is operated to heat the seat surfaces 2a and 3a.

Here, in the present embodiment, the in-seat heat exchanger 11A includes, as shown in FIG. 6, the seat cushion side heat exchanger 11 Ac provided in the seat tack 2 and the seat back provided in the seat back 3. Consists of with 1 lAb, side heat exchanger!

[0050] On the other hand, the electric heater 14A is constituted by a seat tack side heater 14Ac provided in the seat cushion side heat exchanger 11Ac and a seat back side heater 14Ab provided in the seat back side heat exchanger lAb. Has been.

In FIG. 7, for the sake of convenience, the seat cushion side heat exchanger 1 lAc and the seat back side heat exchanger 11 Ab are collectively shown as one in-seat heat exchanger 11 A, and the seat cushion side heater 14Ac and the seat back side heater 14Ab are collectively shown as one electric heater 14A.

[0052] The heat exchanger 12A outside the seat is disposed under the seat cushion 2, and The heat exchanger 12A, the seat cushion side heat exchanger 11 Ac, and the seat back side heat exchanger 1 lAb (that is, the in-seat heat exchanger 11A) are each a seat that circulates a heat exchange medium such as engine coolant. The cushion side circulation path 15 and the seat back side circulation path 16 are connected to each other.

[0053] The seat cushion side circulation path 15 includes an outward path 15a and a return path 15b communicating the seat outer heat exchanger 12A and the seat cushion side heat exchanger 11 Ac, and the seat back side circulation path 16 includes a seat. An outward path 16a and a return path 16b communicating the external heat exchanger 12A and the seat back side heat exchanger 1lAb are provided, and a medium circulation mechanism 13 is disposed in each of the return paths 15b and 16b.

[0054] The medium circulation mechanism 13 has the same configuration as that of the first embodiment. That is, in this medium circulation mechanism 13, when the water pump 13a is operated, the heat exchange medium force S in the seat cushion side heat exchanger 11 Ac and the seat back side heat exchanger l lAb is sucked through the reservoir tank 13b. Then, the heat exchange medium that has been sucked by the bow I is pumped toward the heat exchanger 12A outside the seat.

[0055] The heat exchange medium pumped to the seat outer heat exchanger 12A flows through the medium flow path 12p in the seat outer heat exchanger 12A, and is then distributed to the forward paths 15a and 16a to be seat cushion side heat exchangers. 1 lAc and seat back side heat exchanger 1 lAb flows into the seat cushion side heat exchanger 1 lAc and seat back side heat exchanger 1 lAb medium flow path 1 lp, then collects in reservoir tank 13b It is done.

[0056] Then, by being sucked again from the reservoir tank 13b to the water pump 13a, the heat exchange medium is converted into the seat outside heat exchanger 12A, the seat cushion side heat exchanger lAc, and the seat back side heat exchanger. Cycled between 1 lAb.

Here, in the present embodiment, the seat cushion side heat exchanger 1 lAc and the seat back side heat exchanger 11 Ab include the seat cushion side heater 14Ac over substantially the entire region as shown in FIG. And a seat back side heater 14Ab is arranged.

[0058] At this time, the heating wire 14r of the seat cushion side heater 14Ac and the seat back side heater 14Ab (electric heating heater 14A) is connected to the seat cushion side heat exchanger 11 Ac and the seat back side heat exchanger 11 Ab (that is, the seat Arranged from the media flow path 1 lp of the internal heat exchanger 11) ing.

Specifically, as shown in FIG. 7, the medium flow path l ip reciprocates in a bellows shape, that is, reciprocates substantially over the entire surface of the seat cushion side heat exchanger 11A c and the seat back side heat exchanger 1 lAb. Medium Channel l ip is routed in parallel. On the other hand, the heating wire 14r of the seat cushion side heater 14Ac and the seat back side heater 14Ab is also arranged in a bellows shape. At this time, the heating wire 14r is arranged between two adjacent medium flow paths l ip. Has been. The resistance value (heat generation amount) of the heating wire 14r is set so that the occupant can be heated appropriately.

Then, as shown in FIG. 9, the seat cushion side heat exchanger l lAc and the seat back side heat exchanger l lAb (that is, the in-seat heat exchanger 11) include a plurality of flexible sheets (in this embodiment, 3) 1st to 3rd flexible sheets (for example, sheets made of ether-based urethane) 1 9a, 19b, 19c, high-frequency welding W while forming a medium flow path l ip between them Then, it is formed by joining!

[0061] At this time, the first flexible sheet 19a and the second flexible sheet 19b are made relatively thick, while the third flexible sheet 19c is made relatively thin so that the first flexible sheet 19a and the second flexible sheet 19c are made relatively thin. The first to third flexible sheets 19a to 19b are overlapped with the heating wire 14r sandwiched between the conductive sheet 19a and the second flexible sheet 19b, and the three flexible sheets 19a to 19b are welded by high frequency at both sides W of the medium flow path l ip!

[0062] When the medium flow path l ip formed by force is filled with the heat exchange medium, the third flexible sheet 19c bulges and the medium flow path l ip swells. On the other hand, when the heat exchange medium is removed, the medium flow path l ip is crushed.

[0063] With the above configuration, according to the seat surface cooling / heating device 10 for the vehicle seat 1 according to the present embodiment, when the vehicle is parked for a long time under the hot summer sun, the vehicle seat is caused by the direct sunlight irradiated into the vehicle interior. The seat cushion 2 on the front side of 1 and the seat surfaces 2 a and 3 a of the seat back 3 are heated. At this time, the back side of the vehicle seat 1, that is, the lower surface 2b of the seat cushion 2 and the rear side surface of the seat back 3, particularly the lower surface 2b of the seat cushion 2 in this embodiment is blocked by direct sunlight, The atmospheric temperature in the passenger compartment is substantially the same.

[0064] For this reason, the seat outside heat exchanger 13 disposed on the lower surface 2b side of the seat cushion 2 is in a low temperature state substantially equal to the vehicle interior temperature, while the seat cushion 2 and the seat back The seat cushion side heat exchanger 1 lAc and the seat back side heat exchanger 1 lAb placed on the seat surfaces 2a and 3a side of 3 are in a high temperature state!

[0065] At this time, the water pump 13a of the medium circulation mechanism 13 is operated to exchange heat between the seat outside heat exchanger 12A and the seat cushion side heat exchanger 1lAc and the seat back side heat exchanger 1lAb. Circulate the medium.

[0066] Thereby, the heat exchange medium in a low temperature state circulates through the medium flow path l ip of the seat cushion side heat exchanger 1lAc and the seat back side heat exchanger llAb. Therefore, the seat surfaces 2a and 3a on which the seat cushion side heat exchanger 1lAc and the seat back side heat exchanger 1lAb are provided are uniformly and uniformly cooled. In this way, the occupant can sit on the vehicle seat 1 that has been cooled to approximately the vehicle interior atmosphere temperature.

[0067] On the other hand, when the passenger compartment temperature is lowered and the seat surfaces 2a and 3a become cold due to cold conditions, the seat cushion side heat exchanger 1 lAc and the seat back side heat exchanger 11 Ab Actuate the seat cushion side heater 14Ac and the seat back side heater 14Ab that are installed in (that is, energize the heating wire 14r). Thereby, the sheet surfaces 2a and 3a are heated by the heating wire 14r.

At this time, in this embodiment, the heating wire 14r of the seat cushion side heater 14Ac and the seat back side heater 14Ab is connected to the seat cushion side heat exchanger 1 lAc and the seat back side heat exchanger 11 Ab medium. Flow path l Arranged from ip. For this reason, since the heat of the seat cushion side heater 14Ac and the seat back side heater 14Ab is taken away by the heat exchange medium in the fluid flow path 1lp, the speed warming effect of the seat surfaces 2a and 3a can be enhanced.

[0069] Furthermore, the seat cushion side heat exchanger 11 Ac and the seat back side heat exchanger 1 lAb are provided with the first to third flexible sheets 19a, 19b, 19c between the medium flow paths. Joined while forming 1 lp. According to the configuration, the heat flow in the seat can be reduced by crushing the media flow path due to the occupant pressure on the heat exchanger 11A in the seat or by lowering the forward path with respect to the heat exchanger A in the gravity direction. The container 11A is squeezed, and the heat exchange medium can be efficiently discharged to the lower reservoir tank 13b. In addition, since the medium flow path l ip can be set in a collapsed state during normal times when no heat exchange medium is supplied, the force S of sitting on the vehicle seat 1 without a sense of incongruity can be achieved. When the heat exchange medium is supplied, the medium flow path l ip is expanded. Therefore, the medium can be distributed more smoothly.

(Fifth Embodiment) FIG. 10 is an enlarged cross-sectional view of an external heat exchanger according to this embodiment.

[0071] The seat surface cooling and heating apparatus according to the present embodiment is basically similar to the seat surface cooling and heating apparatus 10 of the fourth embodiment, and the heat exchange medium of the outside seat heat exchanger 12A is used as the in-seat heat exchanger 11. It is supposed to circulate. However, in the present embodiment, a Peltier element 23 that is cooled by energization is attached to the heat exchanger 12A outside the seat.

[0072] In the present embodiment, as in the third embodiment, a duct 21 for introducing a cooling air conditioned by an air conditioner (not shown) is connected to the heat exchanger 12A outside the seat. The Peltier element 23 is attached to the lower surface of the outside-seat heat exchanger 12A so as to be disposed in the duct 21.

Therefore, according to the present embodiment, the cooling effect of the external heat exchanger 12A is increased by the cooling effect of the Peltier element 23 provided in the external heat exchanger 12A, and consequently, the internal heat exchanger It can improve the cooling efficiency of 11A and improve the cooling effect of the seat surfaces 2a and 3a (see Fig. 6).

[0074] Further, in this embodiment, the duct 21 for introducing the air conditioning air conditioned by the air conditioner is connected to the outside seat heat exchanger 12A, and therefore, combined with the cooling effect by the Peltier element 23. Thus, the cooling efficiency of the outside-seat heat exchanger 12A can be further increased.

As described above, the preferred embodiments of the present invention have been described. However, the present invention is not limited to the above-described embodiments, and various modifications can be made.

[0076] For example, in the above embodiments, the seat cushion side heat exchanger 11c, l lAc and the seat back side heat exchanger l ib, l are provided on the seat surface 2a of the seat cushion 2 and the seat surface 3a of the seat back 3. lAb is a force that discloses the case where both the seat cushion 2 and the seat back 3 are air-conditioned. The in-seat heat exchangers 11 and 11 A are equipped with the seat surface 2a of the seat cushion 2 or the seat surface 3a of the seat back. It is also possible to provide either one of the heat exchangers 11 and 11A in the seat on the front surface of the headrest 4! /.

[0077] In addition, the fourth embodiment may be provided with a cooling fan in the heat exchanger outside the seat, or may be provided with a Peltier element in the heat exchanger outside the seat according to the first embodiment. The present invention can be used for an automobile air conditioner.

Claims

The scope of the claims

[1] An in-seat heat exchanger embedded in a seat surface on the front side of a vehicle seat including a seat cushion and a seat back,

An outside seat heat exchanger disposed on the back side of the vehicle seat;

A medium circulation mechanism for circulating a heat exchange medium between the in-seat heat exchanger and the out-of-seat heat exchanger;

A medium heating heater which is provided in the heat exchanger outside the sheet and heats a heat exchange medium supplied from the heat exchanger outside the sheet to the heat exchanger inside the sheet;

With

During the cooling of the seat surface, the medium circulation mechanism is operated to supply the low temperature medium of the outside heat exchanger to the in-seat heat exchanger, and during heating, the medium heating heater is operated to heat the medium. A seat surface cooling / heating device for a vehicle seat, wherein the heat exchange medium is supplied to an in-seat heat exchanger.

[2] The medium flow path of the heat exchanger outside the sheet and the heater side medium flow path of the medium heating heater are arranged in parallel, and flow to the branch portion between the medium flow path and the heater side medium flow path. The seat surface cooling / heating device for a vehicle seat according to claim 1, further comprising a road switching mechanism.

[3] An in-seat heat exchanger embedded in a seat surface that is a front surface side of a vehicle seat having a seat cushion and a seat back;

An outside seat heat exchanger disposed on the back side of the vehicle seat;

A medium circulation means for circulating a heat exchange medium between the in-seat heat exchanger and the out-of-seat heat exchanger;

An electric heater incorporated in the in-seat heat exchanger;

With

During cooling of the seat surface, the medium circulating means is operated to supply the low temperature medium of the heat exchanger outside the sheet to the in-seat heat exchanger, and during heating, the electric heater is operated to heat. A seat surface cooling / heating device for a vehicle seat.

4. The seat surface cooling / heating device for a vehicle seat according to claim 3, wherein the heating wire of the electric heater is arranged so as to be shifted with respect to the medium flow path of the in-seat heat exchanger.

[5] The vehicle according to claim 3 or 4, wherein the in-sheet heat exchanger is formed by joining a plurality of flexible sheets while forming a medium flow path therebetween. Sheet surface air-conditioning system.

6. The seat cooling / heating device for a vehicle seat according to any one of claims 1 to 5, further comprising a cooling fan for the heat exchanger outside the seat.

[7] The duct according to any one of claims 1 to 6, wherein a duct for introducing conditioned air conditioned by an air conditioner mounted on a vehicle is connected to the heat exchanger outside the seat. Seat cooling and heating system for car seats.

[8] The seat surface cooling / heating device for a vehicle seat according to any one of [8] to [7], wherein a Peltier element for cooling by energization is provided in the heat exchanger outside the seat.