JPH11254949A - Vehicle air-conditioning device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle air-conditioning device having a simple and compact structure which can effectively warm up the rear part of a cabin of a vehicle. SOLUTION: In a vehicle in which a plurality of rows of seats 1 to 3 are arranged in a cabin in the longitudinal direction of the cabin, a heat unit 4 is arranged on one side of the rearmost rear seat 3, and a heater duct 6 for guiding heating air delivered from the heater unit 4 toward the widthwise center part of the vehicle, is laid underneath the rear seat 3, and is formed therein with a blow-out port for blowing out heating air upward from the floor part of the cabin.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an air conditioner for a vehicle configured to heat a rear part of a vehicle interior by a heater unit disposed on a side of a rear seat.

[0002]

2. Description of the Related Art Conventionally, as shown in Japanese Utility Model Application Laid-Open No. 3-103806, for example, a first rear seat is arranged behind a front seat, and a second rear seat is further arranged behind the first seat. In a vehicle having a large cabin such as a one-box car, heating air derived from a heater unit of an air conditioning unit installed on a side wall portion of the vehicle body is supplied to the first rear portion located at a central portion in the front-rear direction of the cabin. The heater air is supplied to a heater duct installed below the seat, and the heating air is blown out from an outlet formed in the heater duct toward a front seat and a second rear seat. There is known an air distribution structure of a vehicle air conditioner configured to effectively heat a rear portion of a vehicle interior that is difficult to heat by an air conditioning unit.

[0003]

The vehicle air conditioner disclosed in the above publication is a heater of an air conditioning unit disposed at a side portion of a first rear seat located at a substantially central portion in a front-rear direction of a vehicle compartment. Heating air derived from the unit is configured to be guided by a heater duct disposed below the first rear seat and blown out to the central portion of the vehicle interior. It is difficult to provide a rear door. For this reason, the vehicle in which the rear doors are disposed on the left and right side walls of the vehicle body cannot be equipped with the vehicle air conditioner, and there is a problem that the vehicles capable of installing the air conditioner are limited. .

[0004] Further, in the vehicle air conditioner, in order to efficiently heat the entire interior of the vehicle cabin, a blower of the heater duct disposed below a first rear seat located at a substantially central portion of the vehicle interior is provided. Heating air is blown out from the exit toward the front seat and the second rear seat. Therefore, it is necessary to make the heater duct protrude above the floor portion in the vehicle compartment and form air outlets on both front and rear wall surfaces of the protruding portion. The presence of the heater duct makes the floor portion of the vehicle compartment flat. There was a problem that it was not possible.

The present invention has been made in view of the above circumstances, and provides a vehicle air conditioner which can effectively heat the rear portion of a vehicle interior with a simple and compact structure and can be mounted on various vehicles. is there.

[0006]

The invention according to claim 1 is
In a vehicle in which a plurality of rows of seats are arranged in the front-rear direction of a vehicle cabin, a heater unit is arranged beside a rear seat located at the rearmost position, and heating air derived from the heater unit is supplied to a vehicle width. A heater duct that guides toward the center in the direction is installed below the rear seat, and an outlet for blowing the heating air from a floor portion in the vehicle compartment is formed in the heater duct.

[0007] According to the above configuration, the heater unit is arranged on the side of the rear seat located at the rearmost position of the passenger compartment, so that the space for installing the rear door in front of the installation portion of the heater unit is provided. Is secured. After the heating air derived from the heater unit passes through the heater duct and is guided under the rear seat to the center in the vehicle width direction, the heating air flows from the air outlet located on the floor in the vehicle compartment. By blowing the air, the rear part of the vehicle compartment is efficiently heated.

[0008] The invention according to claim 2 is mounted on a vehicle in which three rows of seats are arranged in the front-rear direction of the vehicle compartment.
The vehicle air conditioner according to claim 1, wherein a heater unit is provided on a side of a rear seat located in a third row from the front.

According to the above arrangement, the heater unit is provided on the side of the rear seat in the third row from the front of the rearmost portion of the vehicle compartment, so that the heater unit is located in front of the installation portion of the heater unit, that is, in the vehicle. 2 from the front located in the center of the room in the front-back direction
A space for installing the rear door beside the rear seat in the row is secured. Also, after the heating air led out from the heater unit is guided to the center in the vehicle width direction through the heater duct, under the rear seats located in the third row from the front, and then to the floor in the vehicle interior, By the above-mentioned heating air being blown out from the located blow outlet,
The rear part of the cabin is efficiently heated.

According to a third aspect of the present invention, in the vehicle air conditioner according to the first or second aspect, the first duct extends downward from the installation portion of the heater unit along the side wall of the vehicle body, and the first duct. A second duct extending from the lower end of the vehicle to the center in the vehicle width direction along the upper surface of the floor panel of the vehicle body, and a third duct extending forward from the front end of the second duct to the vehicle compartment. The third duct is provided with an air outlet for heating air.

According to the above configuration, the heating air led out of the heater unit is supplied to the lower side of the passenger compartment through the first duct of the heater duct, and is also supplied to the center in the vehicle width direction through the second duct. Supplied to the department. Then, after the heating air is supplied to the front side of the vehicle compartment through the third duct of the heater duct, the air is blown out from the floor portion in the vehicle compartment to the rear portion of the vehicle compartment.

According to a fourth aspect of the present invention, in the vehicle air conditioner according to the third aspect, the air conditioner is disposed symmetrically at a front portion of the third duct along a center line passing through a center position in the vehicle width direction. And a pair of branch portions, and an outlet for heating air is provided at the tip of the branch portion.

According to the above configuration, the heating air led out of the heater unit is supplied to the lower side of the passenger compartment through the first duct of the heater duct, and is also supplied to the center in the vehicle width direction through the second duct. After being supplied to the front part of the passenger compartment through the third duct and further branched right and left through the branch part, the air is blown out from the floor part in the passenger compartment to the rear part of the passenger compartment.

According to a fifth aspect of the present invention, in the air conditioner for a vehicle according to any one of the first to fourth aspects, the air conditioner for heating is provided at an outlet of the heater duct toward a foot of an occupant seated in a rear seat. A grille having a guide plate for guiding air and a reinforcing rib is attached.

According to the above configuration, the heating air blown out from the outlet of the heater duct is guided by the guide plate of the grill so as to face the feet of the occupant, so that the feet of the occupant are effectively warmed. In addition, the grill attached to the outlet of the heater duct disposed at the bottom in the vehicle cabin is reinforced by the reinforcing rib, and entry of foreign matter into the outlet is effectively prevented by the reinforcing rib. become.

According to a sixth aspect of the present invention, in the vehicle air conditioner according to any one of the first to fifth aspects, a sound insulating material is installed on an upper surface of the floor panel, and a heater duct is embedded in the sound insulating material. It was done.

According to the above configuration, the heater duct is embedded in the sound insulating material on the floor panel, so that the bottom surface in the vehicle compartment is formed flat.

According to a seventh aspect of the present invention, in the vehicle air conditioner according to any one of the first to sixth aspects, the rear seat displaced rearward is provided on a floor panel located rearward of the rear seat. And a heater duct is disposed in front of the recess.

According to the above configuration, it is possible to dispose the heater duct on the floor in the vehicle compartment without disturbing the operation of displacing the rear seat rearward and storing it in the recess.

According to an eighth aspect of the present invention, in the vehicle air conditioner according to any one of the first to seventh aspects, the lower portion of the rearmost pillar and the wheel house of the rear wheel are provided. Is provided with a heater unit.

According to the above arrangement, the heater unit is provided between the lower part of the pillar located at the rearmost position of the vehicle body and the wheel house of the rear wheel, so that the rear part is located in front of the wheel house of the rear wheel. Space for installing the door will be secured.

According to a ninth aspect of the present invention, in the air conditioner for a vehicle according to the eighth aspect, a cooler unit is disposed together with the heater unit on a side of the rear seat, and cooling air derived from the cooler unit is supplied. A cooler duct that guides upward is installed along a pillar located at the rearmost position.

According to the above configuration, the heater unit and the cooler unit are arranged on the side of the rear seat located at the rearmost position of the vehicle compartment, so that the rear door is installed in front of the installation section of these units. In addition to securing a space for cooling, the air for cooling derived from the cooler unit is guided to the upper part of the cabin through the cooler duct, and then blown into the cabin.

[0024] The invention according to claim 10 is the above-described claim 1.
The vehicle air conditioner according to claim 9,
A sliding rear door is provided in front of a heater unit installation section.

According to the above configuration, the opening for installing the slide door having a large opening area is formed in front of the installation portion of the heater unit, and the rear seat can be easily boarded and dismounted via the opening. Become.

[0026]

FIG. 1 shows a front seat 1 comprising a driver's seat and a passenger seat, a first rear seat 2 of a separate type in which left and right seats located behind the front seat 1 are independent of each other, and a rear seat 1 located behind the front seat. 3 shows an embodiment of an air conditioner according to the present invention mounted on a vehicle consisting of a one-box car in which three rows of bench seat type second rear seats 3 are arranged in the vehicle interior in the front-rear direction. .

The air conditioner includes a heater unit 4 having a blower and a heater core, a cooler unit 5 having an evaporator and an air mixing member, a heater duct 6 for guiding heating air derived from the heater unit 4, and a cooler. It has a cooler duct 7 for guiding cooling air derived from the unit 5, and an air conditioning unit 8 is configured by integrating the heater unit 4 and the cooler unit 5. The air-conditioning unit 8 is located between the lower part of a so-called D pillar 9 located at the rearmost part of the vehicle body and the right rear wheel house 10 on the right side of the second rear seat 3 located at the rearmost part of the vehicle compartment. And a sliding rear door 11 is disposed in front of the rear door 11.

As shown in FIGS. 2 and 3, the heater duct 6 extends downward from the installation portion of the heater unit 4 along the side wall of the vehicle body to a first duct 12 extending downward from the vehicle body. A second duct 14 extending from the lower end of the first duct 12 to the center in the vehicle width direction along the upper surface of the floor panel 13, and a third duct extending from the distal end of the second duct 14 to the front of the passenger compartment. And a duct 15.

The third duct 15 is provided at its front half with a pair of branch portions 16, 16 symmetrically disposed along a center line CL passing through the center position in the vehicle width direction. The branching portions 16 and 16 are connected to the second rear seat 3.
And a heating air outlet 17 is formed on the upper surface of the front end of the front end of the vehicle, and the heating air is blown upward from the floor at the rear of the vehicle compartment.

As shown in FIGS. 4 and 5, felt, urethane foam,
A sound insulating material 18 made of polyethylene foam or glass wool or the like is provided, and a second duct 14 and a third duct 15 of the heater duct 6 are installed in cutouts formed in the sound insulating material 18. As a result, the second and third ducts 14 and 15 are buried in the sound insulating material 18, and a rug 19 made of a carpet or a mat is installed on the upper surface thereof, thereby forming a flat floor surface.

The second duct 14 of the heater duct 6 has a bulging portion 20 formed by recessing the first half of the bottom wall of the second duct 14, and the floor panel 13 has the bulging portion 2 formed therein.
A recess 21 corresponding to 0 is formed. A cross member 22 extending in the vehicle width direction and a recess 23 having a predetermined width recessed downward are provided behind the installation portion of the second duct 14.
Are provided. The concave portion 23 is large enough to store the second rear seat 3 when the seed backs are folded on the seat bottom of the second rear seat 3 and operated to rotate and displace them rearward. The air conditioning unit 8 is laid out on the right side.

The second duct 1 of the heater duct 6
The fourth and third ducts 15 are provided with a plurality of reinforcing portions 24 for preventing the deformation. The reinforcing portion 24 is formed by recessing the upper wall portion and the bottom wall portion of the second duct 14 and the third duct 15 into the inside of the duct and joining the recessed ends together. , The second
The dimension in the duct width direction is formed smaller than the dimension in the duct length direction so as not to obstruct the flow of the heating air passing through the duct 14 and the third duct 15.

As shown in FIGS. 5 and 6, a grill 26 having a plurality of reinforcing ribs 25 extending in the front-rear direction of the vehicle compartment is attached to the outlet of the heater duct 6. The grill 26 has a front end portion. A guide plate 27 for guiding the heating air obliquely upward toward the feet of the occupant seated on the second rear seat 3 is provided. A flange 28 is formed on the outer periphery of the grill 26 so as to be pressed against the upper surface of the rug 19, and the flange 28 locks and conceals the periphery of the grill installation hole formed in the rug 19. It has become so.

The cooler duct 7 for guiding the cooling air derived from the cooler unit 5 has a structure as shown in FIG.
A rising duct 29 extending upward from the installation portion of the cooler unit 5 along the rearmost D pillar 9, and a side duct extending from the upper end of the rising duct 29 to the front side of the vehicle compartment along the roof side portion 30 of the vehicle body. 31 and a roof duct 33 extending in the vehicle width direction along the lower surface of the roof panel 32 from the tip of the side duct 31. The roof duct 33 is located at the rear of the front seat 1. It is arranged above the seat 2 and the second rear seat 3 located behind the seat 2.

As shown in FIG. 7, the rising duct 29 is installed along the inner wall surface of the D-pillar 9 located at the rearmost part of the vehicle body, and a trim member 34 disposed inside the vehicle interior. Is configured to cover the inner wall surface. At the front side of the inner wall surface of the D-pillar 9, a recessed step portion 35 recessed to the outside of the vehicle is formed. The rising duct 29 is mounted along with the recess 35 of the D-pillar 9 by a mounting tool.

As shown in FIGS. 8 and 9, between the upper end of the rising duct 29 and the rear end of the side duct 31, both ends are fitted into the rising duct 29 and the side duct 31, respectively. As a result, both ducts 29,
A connection duct 36 that connects the power supply 31 is provided. A side surface protection member 37 made of a plastic material or the like protrudes from a front side of the connection duct 36.

The side surface protection member 37 has a predetermined width and extends to the front side of the vehicle body along the bottom wall surface of the side duct 31 and the inner wall surface of the roof side portion 30 of the vehicle body.
And a bellows-like rib plate 39 protruding from the outer surface of the side plate 38.
When the rib plate 39 comes into contact with the vehicle, the rib plate 39 is pressed against the roof side portion 30 of the vehicle body and elastically deforms, thereby absorbing a load acting on the head of the occupant and protecting the occupant. .

As shown in FIG. 8, on the lower surface of the roof panel 32, a roof reinforcement 40 having an inverted hat shape extending in the vehicle width direction is mounted. The roof duct 33 has a flat cross-section including a first bulging portion 41 protruding forward and a second bulging portion 42 protruding rearward from the vehicle body member including the roof reinforcement 40. It has a shape, and a recessed portion 43 that is recessed downward corresponding to the roof reinforcement 40 is formed in the center on the upper wall surface.

As shown in FIG. 10, on the bottom wall of the roof duct 33, defroster outlets 44 are formed at both left and right ends, and a mounting portion 45 for the vehicle body member is provided on the inner side. Have been. On the bottom wall surface of the roof duct 33, a pair of left and right first air outlets 46, 46 for the first rear seat 2 is formed in the bottom wall of the first bulging portion 42, and the second rear seat A pair of left and right second air outlets 47, 47 for three are formed in the bottom wall of the second bulging portion 41, and these first air outlets 46, 47 are formed.
The 46 and the second outlets 47 are symmetrically arranged along a center line CL passing through the center position in the vehicle width direction.

As shown in FIG.
As shown by an arrow a, the outside position for guiding the cooling air toward the side window 48 of the vehicle compartment, and as shown by the arrow b, the cooling air is guided toward the inside of the vehicle room. A grill 50 having a wind direction guide portion 49 for changing the wind direction between the inside and the inside position is provided. A flange 52 is formed on the outer periphery of the grill 50 so as to be pressed against the lower surface of the top sealing material 51.
Thereby, the periphery of the grill installation hole is locked and concealed.

The mounting portion 45 of the roof duct 33 is
As shown in FIG. 12, the bottom wall 53 of the roof duct 33 is formed by recessing outside the vehicle compartment, that is, on the upper side, and the recessed end 54 contacts the upper wall 55 of the roof duct 33. It is configured to be mounted on the lower surface of the roof reinforcement 40 by the mounting tool 56 in the contact state.

The first outlet 46 for the first rear seat 2
As shown in FIG. 13, is formed on an inclined wall 57 that rises forward and is provided on a bottom wall portion of the first bulging portion 41 protruding forward of the vehicle compartment, and is formed obliquely from the first air outlet 46. The cooling air is blown out toward the front side. The second outlet 47 for the second rear seat 3 is formed in a rearwardly inclined wall 58 provided on the bottom wall of the second bulging portion 42 protruding rearward of the passenger compartment. The cooling air is blown obliquely rearward from the outlet 47.

As shown in FIG. 14, the first outlet 46 for the first rear seat 2 is disposed in the leaf duct 33 at the center in the vehicle width direction.
Left and right first rear seats 2 formed in a separate type;
It is configured to blow cooling air between the two.
The second air outlet 4 provided behind the first air outlet 46
The air for cooling blown out from 7 is blown to the center of the second rear seat 3 formed as a bench seat type. The first and second outlets 46 and 47 are provided with grills each having a wind direction guide for changing the blowing direction of the cooling air in the front-rear direction and the left-right direction of the vehicle compartment.

In the above configuration, when the heater unit 4 of the air conditioning unit 8 disposed at the rear of the vehicle compartment is operated, the heating air derived from the heater unit 4 causes the first to first air of the heater duct 6 to flow. 3 ducts 12, 1
By flowing through the inside of the fourth rear seat 3, the passenger is guided under the second rear seat 3 to the central portion in the vehicle width direction, and after being guided to the front side thereof, seated on the second rear seat 3. The air blows out from the air outlet 17 located on the floor toward the foot F of the occupant (see FIG. 1). As a result,
The rear part of the vehicle interior away from the heating range of an air conditioning unit (not shown) provided in the front part of the vehicle interior is effectively heated.

When the cooler unit 5 of the air conditioning unit 8 is operated, the cooling air derived from the cooler unit 5 flows through the rising duct 29, the side duct 31, and the roof duct 33 of the cooler duct 7. Thereby, after being guided to the center part of the vehicle interior through the upper part between the first rear seat 2 and the second rear seat 3,
By blowing air downward from the air outlets 46 and 47 located on the roof of the vehicle cabin, the rear part of the vehicle cabin is effectively cooled.

In the vehicle in which a plurality of rows of seats 1 to 3 are arranged in the front-rear direction of the vehicle as described above, the heater unit 4 is arranged beside the second rear seat 3 located at the rearmost position. A heater duct 6 for guiding the heating air derived from the heater unit 4 toward the center in the vehicle width direction is provided below the rear seat 3, and the heating air is blown out from the floor in the vehicle compartment. Since the air outlet 17 is formed in the heater duct 6, the rear part of the cabin of a one-box car or the like can be efficiently heated without the problem that the type of a mountable vehicle is limited.

That is, since the heater unit 4 is disposed beside the second rear seat 3, the heater unit 4
In front of the vehicle, that is, at the side of the first rear seat 2 located at the center in the front-rear direction of the vehicle compartment, it is possible to secure a space for installing the rear door 11. Therefore, not only a vehicle in which the rear door is disposed only on one side of the vehicle body, but also a vehicle in which the rear door 11 is disposed on both right and left sides of the vehicle body has the heater unit 4 and the heater duct 6. The rear part of the cabin can be heated by installing an air conditioner.

Since the heater duct 6 is provided below the rear seat 3, the opening area of the heater duct 6 can be sufficiently increased without affecting the space of the trunk room disposed behind the rear seat 3. Can be secured. Therefore, the heating air derived from the heater unit 4 can be supplied smoothly through the heater duct 6, and the floor of the trunk room can be formed on a flat surface to improve the utilization efficiency. .

Further, since the heating air is blown upward from the air outlet 17 of the heater duct 6 located at the center in the vehicle width direction, the heater disposed at the side of the vehicle compartment. As in the case where an air outlet is provided in the vicinity of the unit 4, that is, in the right side of the vehicle compartment, the heating air blown out from the air outlet circulates in the vicinity of the heater unit 4 and only a part of the rear vehicle compartment is provided. Can be uniformly heated over a wide area without rearrangement from the heating range of the air-conditioning unit provided at the front of the vehicle compartment. In particular, the air-conditioning unit 8 disposed at the rear of the vehicle compartment is often of an internal air circulation type in which the heating air is likely to circulate in a part of the vehicle interior, as compared with the external air introduction type. The effect of adopting the above configuration is remarkable.

In the above embodiment, an example is described in which the present invention is applied to a vehicle in which three rows of seats 1 to 3 are arranged in the front-rear direction of the vehicle compartment. However, the present invention is not limited to this. The configuration of the present invention can also be applied to a vehicle in which two rows of rear seats are arranged in the directions. That is, 2
The heater unit 4 is installed on the side of the rearmost rear seat located in the row, and the heater duct 6 for guiding the heating air derived from the heater unit 4 to the center in the vehicle width direction is connected to the rear portion. The same operation and effect can be obtained even when the device is installed below the seat.

In the above embodiment, the first duct 12 extends downward from the installation portion of the heater unit 4 along the side wall of the vehicle body, and extends from the lower end of the first duct 12 along the upper surface of the floor panel 13 of the vehicle body. A heater duct 6 is constituted by a second duct 14 extending to a central portion in the vehicle width direction and a third duct 15 extending from the front end of the second duct 14 to the front side of the vehicle compartment. Since the heater air outlet 17 is provided in the rear seats 2 and 3 as in the case where a heater duct is installed in front of the rear wheel wheel house 10 along the peripheral surface thereof.
The heating air can be supplied to an appropriate position in the rear part of the vehicle compartment through the heater duct 6 without causing a problem of getting on and off the vehicle.

Further, as shown in the above embodiment, the third
At the front of the duct 15, there is provided a pair of branches 16, 16 arranged symmetrically along the center line CL, and at the ends of the branches 16, 16, a heating air outlet 17 is provided. If provided, the air for heating is blown out into the vehicle cabin in a state where the air for heating is evenly distributed to the left and right in the vehicle width direction by the branch portions 16 while ensuring a sufficient opening area of the third duct 15. A wide area in the rear part of the vehicle interior can be efficiently heated. In addition, the two branch portions 16, 16
There is also an advantage that it is possible to arrange a fixture for a child seat or the like between them.

In the above embodiment, the heater duct 6
A guide plate 27 for guiding heating air toward the foot F of the occupant seated on the second rear seat 3 and a grill 26 having reinforcing ribs 25 are attached to the outlet 17 of the occupant. Heating air can be supplied to the air outlet and the grill 26 can be heated comfortably even when the passenger's feet or luggage are placed on the air outlet 17.
Can be effectively prevented, and foreign matter can be effectively prevented from entering the air outlet 17.

In the above embodiment, the floor panel 1
3 and the heater duct 6 is buried in the sound insulating material 18. By installing the rug 19 above the heater duct 6 and the sound insulating material 18, the installation space for the heater duct 6 is reduced. The bottom surface in the vehicle cabin can be formed flat while securing. Therefore, when the second rear seat 3 is detached and the installation part of the heater duct 6 is used as a trunk room, it is possible to effectively improve luggage storage.

Further, in the above embodiment, a recess 23 for storing the second rear seat 3 displaced rearward is formed in the floor panel 13 located behind the second rear seat 3 and Since the heater duct 6 is arranged in front of the heater duct 23, the heater duct 6 is installed on the floor panel 13 without disturbing the operation of displacing the second rear seat 3 rearward and storing it in the recess 23. be able to.

As shown in the above embodiment, when the heater unit 4 is installed between the lower part of the rearmost D pillar 9 and the wheel house 10 of the rear wheel, the second The heater unit 4 can be properly installed by effectively utilizing the space provided on the side of the rearmost seat including the rear seat 3. Further, as described above, in the second duct 14 of the heater duct 6, a bulged portion 20 is formed by recessing the first half of the bottom wall of the second duct 14, and a recessed portion 21 corresponding to the bulged portion 20 is formed. When the floor panel 13 is formed, the second duct 1
There is an advantage that the flow resistance of the heating air can be effectively reduced by sufficiently securing the opening area in a state where the protrusion 7 is prevented from protruding above the floor.

Further, in the above embodiment, the upper wall and the bottom wall of the second duct 14 and the third duct 15 of the heater duct 6 are recessed inward, and the recessed ends are joined to each other. Since the reinforcing portion 25 is provided, deformation of the second duct 14 and the third duct 15 can be effectively prevented with a simple configuration. In particular, as described above, the reinforcement 25
When the dimension in the duct width direction is formed smaller than the dimension in the duct length direction, the flow of the heating air passing through the second duct 14 and the third duct 15 is not hindered.
There is an advantage that the second duct 14 and the third duct 15 can be effectively reinforced.

In the above-described embodiment, a cooler unit 5 is arranged together with the heater unit 4 beside the second rear seat 3 located at the rearmost position.
Since the cooler duct 7 for guiding the cooling air derived from the upper part along the D pillar 9 located at the rearmost part of the vehicle body, the rear door 11 is provided in front of the air conditioning unit 8 having the heater unit 4 and the cooler unit 5. By guiding the cooling air derived from the cooler unit 5 upward through the cooler duct 7 and blowing out the air into the vehicle interior while ensuring a sufficient space for installing the vehicle interior, The rear part can be efficiently cooled.

Furthermore, even if the D pillar 9 located at the rearmost part of the vehicle body is formed to have a large width dimension (dimension in the front-rear direction), the visibility of the seated occupant in the vehicle compartment may be significantly affected. Since there is no D-pillar 9
And the cooler duct 7 installed along the
Can be increased in width. Thereby, the opening area of the cooler duct 7 can be sufficiently secured to reduce the flow resistance of the cooling air, and the strength of the D pillar 9 can be improved to improve the sense of stability of the vehicle body. The effect is obtained.

As shown in the above embodiment, when the sliding rear door 11 is provided in front of the heater unit installation section, a larger open area can be secured as compared with the hinge type door. So that the rear seats 2, 3
There is an advantage that it is possible to easily get on and off the vehicle.

In the above embodiment, the cooler duct 7
A side duct 31 extending in the front-rear direction of the vehicle body along the roof side portion 30 of the vehicle body is provided between the rising duct 29 and the roof duct 33 of the vehicle. 2 and the rearmost second rear seat 3, and air is blown toward the first rear seat 2 toward the center of the roof duct 33 in the vehicle width direction. A first air outlet 46 and a second air outlet 4 for blowing air for cooling toward the second rear seat 3
7, the cooling air flows from the first and second air outlets 46 and 47 formed at the center of the roof duct 33 in the vehicle width direction toward the first and second rear seats 2 and 3. , The bias of the cooling due to the circulation of the heating air is reliably prevented, and the rear part of the vehicle compartment can be efficiently cooled.

Further, as shown in the above embodiment, when the first rear seat 2 in the second row from the front is configured as a separate type in which the left and right seats are independent, the front seat 1 and the first rear seat 2 can be easily moved from the second rear seat 6 to the second rear seat 6, and the first rear seats 2 arranged on the left and right from the first outlet 46 formed at the center of the roof duct 33 in the vehicle width direction. The air for cooling is blown out in the middle of the airbag, thereby preventing the air for cooling from directly hitting the back of the occupant sitting on the left and right first rear seats 2,
The rear part of the cabin can be efficiently cooled.

In the above embodiment, the roof duct 3
The defroster outlet 44 for blowing air for cooling toward the side window 48 is formed at both left and right end portions of the airbag. Therefore, the air for cooling blown out from the defroster outlet 44 effectively reduces the fogging of the side window 48. There is an advantage that it can be removed. In particular, as shown in the above embodiment, an outer position for guiding the cooling air toward the side window 48 of the passenger compartment and an inner position for guiding the cooling air toward the inner side of the passenger compartment. When a grill 50 having a wind direction guide portion 49 for changing the wind direction between the defroster outlets 44 is attached to the defroster outlet 44, the direction of the cooling air blown out from the defroster outlets 44 is directed toward the inside of the passenger compartment. Thus, it is possible to switch between a state where importance is placed on the cooling performance in the vehicle compartment and a state where importance is attached to the fogging by directing the blowing direction to the side window 48 as necessary.

[0064]

As described above, according to the present invention, in a vehicle in which a plurality of rows of seats are provided in the front-rear direction of a vehicle cabin, a heater unit is provided beside a rear seat located at the rearmost position. At the same time, a heater duct for guiding the heating air derived from the heater unit to the center in the vehicle width direction is provided below the rear seat, and the heating air is blown upward from a floor in the vehicle compartment. Since the air outlet is formed in the heater duct, it is possible to secure a space for installing the rear door in front of the installation portion of the heater unit, and the rear door is provided only on one side of the vehicle body. Not only vehicles, but also vehicles with rear doors arranged on both left and right sides of the vehicle body, the air conditioner having the heater unit and heater duct is mounted to effectively make the rear part of the vehicle interior It is possible to bunch.

Further, since the heater duct is provided below the rear seat, the opening area of the heater duct can be sufficiently secured without affecting the space of the trunk room disposed behind the rear seat. The heating air derived from the unit can be smoothly supplied through the heater unit, and the floor portion of the trunk room can be formed on a flat surface to improve the utilization efficiency. .

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing an embodiment of a vehicle air conditioner according to the present invention.

FIG. 2 is a perspective view showing a configuration of a heater unit and a heater duct.

FIG. 3 is a plan view showing a configuration of a heater unit and a heater duct.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a sectional view taken along line BB of FIG. 3;

FIG. 6 is a plan view showing a configuration of a grill attached to an outlet of a heater duct.

FIG. 7 is a cross-sectional view showing an installation state of a cooler duct.

FIG. 8 is a side view showing an installation state of a cooler duct.

FIG. 9 is a sectional view taken along the line CC of FIG. 8;

FIG. 10 is a bottom view showing the structure of the roof duct.

FIG. 11 is a sectional view taken along line DD of FIG. 10;

FIG. 12 is a sectional view taken along line EE of FIG. 10;

FIG. 13 is a sectional view taken along line FF of FIG. 10;

FIG. 14 is a front view showing an installation state of a roof duct.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Front seat 2 1st backseat 3 2nd backseat 4 Heater unit 5 Cooler unit 6 Heater duct 7 Cooler duct 8 Air conditioning unit 9 D pillar (pillar located at the back) 10 Rear wheel house 11 Rear door 12 First Duct 13 Floor panel 14 Second duct 15 Third duct 16 Branch 17 Heating air outlet 18 Sound insulating material 23 Seat back storage recess 26 Grill 27 Guide plate

Claims (10)

[Claims] 1. A vehicle in which a plurality of rows of seats are arranged in the front-rear direction of a vehicle compartment, a heater unit is arranged on a side of a rear seat located at a rearmost position, and heating derived from the heater unit is provided. A heater duct for guiding the air for use toward the center in the vehicle width direction is provided below the rear seat, and an outlet for blowing the heating air from the floor in the vehicle compartment is formed in the heater duct. Vehicle air conditioning system. 2. A vehicle in which three rows of seats are arranged in the front-rear direction of a vehicle cabin, wherein a heater unit is arranged beside a rear seat located in a third row from the front. 2. The vehicle air conditioner according to claim 1. 3. A first duct extending downward from the installation portion of the heater unit along the side wall of the vehicle body, and a first duct extending from a lower end of the first duct to a central portion in the vehicle width direction along the upper surface of the floor panel of the vehicle body. The heater duct is constituted by two ducts and a third duct extending from the tip of the second duct to the front side of the passenger compartment, and an air outlet for heating air is provided in the third duct. An air conditioner for a vehicle according to claim 1 or 2. 4. A pair of bifurcated portions disposed symmetrically along a center line passing through a center position in the vehicle width direction at a front portion of the third duct, and a heating end is provided at a tip end of the bifurcated portion. The vehicle air conditioner according to claim 3, further comprising an air outlet. 5. A grille having a guide plate for guiding heating air toward a foot of an occupant seated in a rear seat and a reinforcing rib is attached to an outlet of the heater duct. An air conditioner for a vehicle according to claim 4. 6. An air conditioner for a vehicle according to claim 1, wherein a sound insulating material is provided on an upper surface of the floor panel, and a heater duct is embedded in the sound insulating material. 7. A concave portion for storing the rear seat displaced rearward is formed in a floor panel located at a rear portion of the rear seat, and a heater duct is disposed in front of the concave portion. An air conditioner for a vehicle according to any one of claims 1 to 6. 8. The vehicle according to claim 1, wherein a heater unit is provided between a lower portion of a pillar located rearmost and a wheel house of a rear wheel. Air conditioner. 9. A cooler unit is provided together with a heater unit on a side of a rear seat, and a cooler duct for guiding cooling air derived from the cooler unit upward is provided.
9. The air conditioner for a vehicle according to claim 8, wherein the air conditioner is installed along a pillar located on the rearmost side. 10. The air conditioner for a vehicle according to claim 1, wherein a sliding rear door is provided in front of a heater unit installation portion.