JP6883452B2 - Vehicle air blower - Google Patents

Description

The technique of the present disclosure relates to an air blowing device for a vehicle that blows air-conditioned air for air-conditioning the interior of a vehicle.

Conventionally, as an air blowing device for a vehicle of this type, an air blowing device having an elongated outlet extending in the vehicle width direction and having a plurality of vertical fins arranged along the longitudinal direction of the outlet has been known. (See, for example, Patent Document 1). Such an air blowing device is generally incorporated in an interior component such as an instrument panel, and is often adjacent to a device such as an airbag, and the air conditioning air brought from the side through a duct is taken into the vertical fins. The angle is changed at a right angle to blow out into the passenger compartment.

Special Fairness 05-008346

However, in the conventional air blowing device for vehicles, the vertical fins are formed relatively long from the vicinity of the outlet to the duct portion where the air flow flows inward in the lateral direction, and the air flowing through the duct portion. Since it is provided so as to block the flow, the side of the vertical fin facing the air inflow direction (the surface opposite to the side on which the air flows in) becomes negative pressure. Turbulent flow is likely to occur near the air outlet. When turbulent flow occurs near the air outlet, irregular vortices are created, which increases ventilation resistance and hinders smooth ventilation from the air outlet. Further, such an irregular vortex affects the air flow blown out from the outlet, so that the stability of the air-conditioning air blowout direction is deteriorated.

The technique of the present disclosure has been made in view of these points, and the purpose thereof is to improve the stability of the air-conditioning air blowing direction while realizing smooth air blowing from the air outlet. is there.

In order to achieve the above object, in the technique of the present disclosure, the shape of the fin has been devised so as to suppress the generation of turbulence near the fin.

Specifically, the technology of the present disclosure is intended for a vehicle air blowing device. This vehicle air blowing device has a duct portion through which the air blown from the air conditioner flows and a duct portion in a second direction perpendicular to or substantially perpendicular to the first direction in which the air flows in the duct portion. It is provided with an air outlet portion which protrudes from the air outlet and has an elongated outlet formed at the tip thereof in the first direction. The term "substantially right angle" as used herein means to include a range inclined by about 10 degrees with respect to a direction perpendicular to the first direction. The air blowing portion has a pair of facing walls facing each other in a third direction orthogonal to the first direction and the second direction, and the pair of facing walls approach each other from the duct portion side toward the outlet. It has a tapered shape.

A plurality of fins for adjusting the direction of the conditioned air blown from the air outlet in the first direction are provided between the pair of facing walls at intervals along the first direction. The fins are formed along the inner surface of the facing wall facing the air outlet portion, and straddle the outlet in the third direction. The back edge of the fins located on the duct portion side extends along the facing wall, and the portion of the back edge corresponding to the air outlet in the middle in the third direction , It is located on the protruding side of the air blowing portion rather than the portions on both ends in the third direction. On the back side of the fin, the space for circulating the air in a first direction in an air blowing portion is made form. The width of this space in the third direction is larger than the width of the air outlet in the third direction, and the depth of the space in the second direction gradually increases from the central portion in the third direction toward both ends. It's getting shorter.

According to the above configuration, since the air outlet portion has a tapered shape in which a pair of facing walls approach from the duct portion side toward the outlet, the conditioned air is efficiently guided to the outlet. Further, since the fins that adjust the direction of the conditioned air blown out from the air outlet in the longitudinal direction thereof are relatively long in the depth direction on both end sides in the direction in which the pair of facing walls face each other (third direction). The direction of the air flow can be changed by fins at points along each facing wall.

Then, since the fins are relatively short in the depth direction in the middle of the direction in which the pair of facing walls face each other (third direction), the portion of the fins that shields the air flow flowing through the duct portion is reduced. Moreover, it is possible to suppress the occurrence of turbulent flow near the fins on the back side of the air outlet. As a result, the ventilation resistance at the air outlet due to the vortex caused by the turbulent flow is reduced, so that smooth ventilation from the outlet can be realized. Further, since the influence of the turbulent flow on the air flow blown out from the air outlet is reduced, the stability of the air conditioning air in the blowing direction can be improved.

In the air blowing device according to the technique of the present disclosure, it is preferable that the end edge on the back surface side of the fin is recessed in a bow-shaped curved shape on the protruding side of the air blowing portion.

According to the above configuration, the fins are provided relatively short in the depth direction at a place where the air flow can be efficiently changed along the facing wall, so that the air flow flowing through the duct portion is not blocked as much as possible. Therefore, the ventilation resistance at the air blowing portion can be suppressed as much as possible. Since the fins are provided to be the shortest on the back side of the air outlet, the generation of turbulent flow near the fins is sufficiently prevented, and the stability of the air conditioning air from the air outlet in the blowing direction is preferably improved. It can be increased, and the direction of blowing air conditioning air can be more reliably directed to a desired direction.

The duct portion has a back wall corresponding to the back side of the air blowing portion. The back wall may approach the air blowing portion side from the upstream side to the downstream side in the first direction in which air flows, and may be inclined with respect to the first direction and the second direction. preferable.

According to the above configuration, the back wall of the air blowing portion is provided in an inclined posture that approaches the air blowing portion as the distance from the air inflow side increases, and the cross-sectional area of the duct portion is directed from the upstream side to the downstream side of the air flow in the longitudinal direction. Since it is gradually narrowed, the ventilation resistance in the duct portion is increased according to the cross-sectional area. Thereby, the air flowing through the duct portion can be distributed to the air outlet without being biased along the longitudinal direction thereof. Therefore, the conditioned air can be blown out evenly and uniformly in the longitudinal direction from the outlet.

According to the vehicle air blowing device according to the technique of the present disclosure, it is possible to improve the stability of the air conditioning air blowing direction while realizing smooth air blowing from the air outlet.

It is a perspective view which shows the instrument panel which incorporated the air blowing device for a vehicle which concerns on embodiment, and its periphery. It is a perspective view of the air blowing device for a vehicle which concerns on embodiment. It is a vertical sectional view of the air blowing device for a vehicle in line III-III of FIG. It is a top view of the air blowing device for a vehicle which concerns on embodiment. It is an exploded perspective view of the air blowing device for a vehicle which concerns on embodiment. It is a perspective view of the air blowing device for a vehicle which concerns on a comparative example. It is a vertical sectional view of the air blowing device for a vehicle which concerns on a comparative example. It is sectional drawing which shows the air flow in the air blowing device for a vehicle which concerns on a comparative example. It is a vertical cross-sectional view which shows the air flow in the air blowing device for a vehicle which concerns on a comparative example. It is sectional drawing which shows the air flow in the air blowing device for a vehicle which concerns on embodiment. It is a vertical cross-sectional view which shows the air flow in the air blowing device for a vehicle which concerns on embodiment. It is an exploded sectional view of the air blowing device for a vehicle which concerns on a modification.

Hereinafter, exemplary embodiments will be described in detail with reference to the drawings. In the following embodiments, for convenience of explanation, the front side in the vehicle front-rear direction is referred to as "front" and the rear side is referred to as "rear", and the left side in the vehicle width direction facing the front of the vehicle is referred to as "left" and the right side is referred to as "right". The upper side in the vehicle height direction is called "upper" and the lower side is called "lower".

In this embodiment, the air blowing device for a vehicle according to the technique of the present disclosure will be described as an air blowing device incorporated in an instrument panel. Here, the first direction of the air blowing device corresponds to the left-right direction, the second direction of the air blowing device corresponds to the front-rear direction, and the third direction of the air blowing device corresponds to the vertical direction. ..

FIG. 1 shows a perspective view of the instrument panel 101 in which the air blowing device 1 according to this embodiment is incorporated and its surroundings. FIG. 2 shows a perspective view of the air blowing device 1. FIG. 3 shows a vertical cross-sectional view of the air blowing device 1 in lines III-III of FIG. FIG. 4 shows a plan view of the air blowing device 1. FIG. 5 shows an exploded perspective view of the air blowing device 1.

The instrument panel 101 shown in FIG. 1 is mounted on the rear side of the dash panel that separates the engine room and the vehicle interior in the front part of the vehicle interior, and is supported by the instrument panel reinforcement surface extending in the vehicle width direction. It is attached to. The instrument panel 101 shown is a panel for a so-called right-hand drive vehicle.

Air conditioning air from an air conditioner (not shown) installed in the instrument panel 101 is blown into the vehicle interior space at a position above the glove box (not shown) on the front side of the passenger seat of the instrument panel 101. A mouth 103 is provided. The air outlet 103 is formed in an elongated slit shape extending linearly in the vehicle width direction (left-right direction). The air conditioner is installed on the back side of the instrument panel 101 on the left side of the center, facing the passenger seat side occupant.

The air blowing device 1 is installed on the left side of the air conditioner on the back side of the instrument panel 101 corresponding to the air outlet 103. As shown in FIGS. 2 to 5, the air blowing device 1 includes a duct portion 3 through which the air blown from the air conditioner flows, and an air blowing portion 5 that blows the air flowing through the duct portion 3 to the outside. To be equipped with.

The duct portion 3 is a resin molded part formed by injection molding, blow molding, or the like, and is composed of an integrally molded duct member 7. The duct member 7 has a rectangular tubular shape having a passage having a rectangular vertical cross section, and is arranged in a posture in which the longitudinal direction is along the vehicle width direction. The right end of the duct member 7 constitutes a connecting portion 11 having a rectangular inflow port 9. The connection portion 11 is connected to a relay duct (not shown) extending from the air conditioner.

The duct member 7 is integrally formed with an upper surface wall 13 facing upward, a lower surface wall 15 facing downward, a back wall 17 facing the front side, and a front wall 19 facing the rear side. The inflow port 9 is formed by the right end edges of the upper surface wall 13, the lower surface wall 15, the back surface wall 17, and the front surface wall 19. The back wall 17 is composed of a parallel portion 23 parallel to the vehicle width direction and an inclined portion 25 inclined with respect to the vehicle width direction.

The parallel portion 23 constitutes a portion of the back wall 17 near the inflow port 9. The inclined portion 25 constitutes a portion of the back wall 17 excluding the parallel portion 23. The inclination angle α of the inclined portion 25 with respect to the vehicle width direction is set to, for example, about 5 degrees to 15 degrees. The cross-sectional area of the duct member 7 gradually decreases from the connecting portion 11 side connected to the intermediate duct to the tip on the left side in the portion corresponding to the inclined portion 25.

A horizontally long rectangular outlet 27 is formed in substantially the entire front wall 19 except for a part near the connecting portion 11. The outlet 27 corresponds to the entire inclined portion 25 and a part of the parallel portion 23 of the back wall 17. A plurality of locking claws 29 are provided apart from each other in the vehicle width direction at portions of the upper surface wall 13 and the lower surface wall 15 along the upper and lower ends of the outlet 27.

The air blowing portion 5 is a resin molded part molded by injection molding or the like, and is composed of an integrally molded louver case 31. The louver case 31 is integrally connected to the outlet 27 of the duct member 7, and projects rearward from the duct member 7. The louver case 31 has a pair of facing walls 33 facing each other in the vertical direction, and side walls 35 that close the space between the two facing walls 33 on both the left and right sides.

Bracket pieces 37 projecting forward are provided on the upper end edge of the upper facing wall 33 and the lower end edge of the lower facing wall 33, respectively. Each of these bracket pieces 37 is provided with a number of engaging pieces 39 corresponding to the locking claws 29 protruding rearward from the bracket piece 37. A locking hole 41 is formed in the engaging piece 39. The louver case 31 is attached to the duct member 7 so as to cover the outlet 27 by hooking the upper and lower engaging pieces 39 on the locking claws 29.

At the tip of the louver case 31 in the protruding direction, an elongated air outlet 43 extending in the vehicle width direction (left-right direction) is formed. The air outlet 43 is connected to and integrated with the air outlet 103. The shape of the outlet 43 in the present embodiment is formed in an elongated rectangular shape. The louver case 31 has a tapered shape in which a pair of facing walls 33 approach each other from the duct member 7 side toward the outlet 43.

Both side walls 35 of the louver case 31 are formed in a substantially trapezoidal shape. On one side wall 35, a rectangular mounting hole 47 for mounting the resin bush 45 is formed. The bush 45 is attached to the side wall 35 of the louver case 31 by press-fitting the rectangular insertion portion 49 into the attachment hole 47. A shaft support hole 51 is formed in the central portion of the bush 45. The other side wall 35 is formed with an insertion hole (not shown) through which the shaft support portion 55 of the angle adjusting gear 53 is inserted.

The louver case 31 is provided with a plurality of vertical fins 57 for adjusting the direction of the conditioned air blown from the air outlet 43 in the left-right direction, and horizontal fins 59 for adjusting the direction of the conditioned air blown from the air outlet 43 in the vertical direction. ing. The plurality of vertical fins 57 and horizontal fins 59 are arranged so as to overlap each other in the vertical direction when viewed from the width direction of the air outlet 43. According to such an arrangement, the space occupied by both the vertical fins 57 and 59 can be reduced as compared with the case where the plurality of vertical fins 57 and the horizontal fins 59 are arranged so as to be offset in the depth direction.

The plurality of vertical fins 57 are integrally formed with the louver case 31, and are arranged at intervals in the left-right direction. The vertical fins 57 extend along the inner surface of the facing wall 33 facing the inside of the louver case 31, are integrally formed with the facing wall 33, and straddle the air outlet 43 in the vertical direction. The vertical fins 57 are formed in a substantially boomerang shape, and serve to partition the inside of the louver case 31 in the longitudinal direction and to increase the rigidity of the louver case 31.

As shown in FIGS. 2 and 3, the rear edge 61 of the vertical fins 57 located on the duct member 7 side is recessed in a bow shape toward the rear, which is the protruding side of the louver case 31. There is. In the end edge 61 on the back side of the vertical fin 57, the portion corresponding to the air outlet 43 in the middle in the vertical direction is located behind the portions on both ends in the vertical direction, and the duct member in the louver case 31. A space 63 is formed on the 7 side. A housing recess 65 recessed on the duct member 7 side is formed in the rear portion of the vertical fin 57 corresponding to the air outlet 43. The upper and lower edges of the opening facing the rear of the accommodating recess 65 are continuous with the air outlet 43.

The horizontal fin 59 is composed of a movable fin member 67 that is separate from the louver case 31. The movable fin member 67 is accommodated lying in the accommodating recess 65 of each vertical fin 57. The movable fin member 67 has a horizontally long horizontal fin 59 extending over the entire length of the air outlet 43, and a pair of shaft portions 69 protruding from both ends in the longitudinal direction of the horizontal fin 59. The lateral fin 59 has a semicircular cross section at the front and a tapered cross section at the rear, and is provided with its tip directed toward or inserted into the air outlet 43.

One of the shaft portions 69 is inserted into the shaft support hole 51 of the bush 45, and is rotatably supported by the louver case 31 via the bush 45. The other shaft portion 69 is press-fitted into an insertion hole formed in the shaft support portion 55 of the angle adjusting gear 53, and is rotatably supported by the louver case 31 via the shaft support portion 55. The angle adjusting gear 53 is connected to a drive gear attached to an output shaft of a motor (not shown). The movable fin member 67 is rotated by the operation of the motor.

In the air blowing device 1 having the above configuration, the air blown from the air conditioner flows into the duct member 7 from the right side along the longitudinal direction via the relay duct. Then, the air flowing into the duct member 7 is changed in direction by the plurality of vertical fins 57 and blown out from the air outlet 43 to the passenger seat side through the air outlet 103. At this time, since the louver case 31 has a tapered shape in which the pair of facing walls 33 approach the outlet 43 from the duct member 7 side, the conditioned air is efficiently guided to the outlet 43.

Further, in the present embodiment, since the cross-sectional area of the duct member 7 gradually narrows from the upstream side to the downstream side of the air flow along the longitudinal direction, the ventilation resistance of the duct member 7 becomes the cross-sectional area. Increased accordingly. As a result, the air flowing through the duct member 7 is distributed to the outlet 43 without being biased along the longitudinal direction thereof, so that the conditioned air is evenly and uniformly blown out from the outlet 43 in the longitudinal direction.

Then, the direction in which the conditioned air is blown out from the air outlet 43 is changed in the vertical direction by the rotational operation of the movable fin member 67. When the lateral fin 59 of the movable fin member 67 is in a horizontal state, that is, in a state where the tip of the lateral fin 59 faces directly rearward, the conditioned air is blown out horizontally and straight toward the passenger in the passenger seat from the air outlet 43. When the lateral fin 59 of the movable fin member 67 is rotated downward from the horizontal state, that is, the tip of the lateral fin 59 faces downward, the air conditioning air is directed downward from the passenger seat from the air outlet 43. Is blown out. On the contrary, when the lateral fin 59 of the movable fin member 67 is rotated upward from the horizontal state, that is, the tip of the lateral fin 59 faces upward, the conditioned air is blown from the air outlet 43 to the upper side of the passenger seat. It is blown out toward.

-Effect of embodiment-
According to the vehicle air blowing device 1 according to this embodiment, it is possible to improve the stability of the air conditioning air blowing direction while realizing smooth air blowing from the air outlet 43. This will be described below with reference to FIGS. 6 to 11. In the following description, for convenience, the same reference reference numerals will be given to the configurations of the air blowing device 201 of the comparative example corresponding to the air blowing device 1 of this embodiment.

FIG. 6 is a perspective view of the air blowing device 201 according to the comparative example. FIG. 7 is a vertical cross-sectional view of the air blowing device 201 according to the comparative example. FIG. 8 is a cross-sectional view showing the air flow in the air blowing device 201 according to the comparative example. FIG. 9 is a vertical cross-sectional view showing the air flow in the air blowing device 201 according to the comparative example. FIG. 10 is a cross-sectional view showing the flow of air in the air blowing device 1 according to this embodiment. Further, FIG. 11 is a vertical cross-sectional view showing the flow of air in the air blowing device 1 according to this embodiment.

As shown in FIGS. 6 and 7, the air blowing device 201 of the comparative example has a substantially trapezoidal shape in which the vertical fins 57 correspond to the side wall 35 of the louver case 31, and the air blowing device 1 of the above embodiment includes the air blowing device 1. It is formed longer in the depth direction than the vertical fin 57. The end edge 61 on the back surface side of the vertical fin 57 is formed in a straight line extending straight in the vertical direction.

In such an air blowing device 201, since the vertical fins 57 are provided so as to shield the air flow flowing through the duct member 7, negative pressure is applied to the sides of the vertical fins 57 facing the air inflow direction. As shown in FIGS. 8 and 9, turbulence is likely to be generated in the vicinity of the air outlet 43. When a turbulent flow occurs in the vicinity of the air outlet 43, an irregular vortex is formed, so that the ventilation resistance increases and the smooth air blowing from the air outlet 43 is hindered. Further, since such an irregular vortex affects the air flow blown out from the outlet 43, the stability of the blowing direction of the conditioned air is poor, and as shown in FIG. 8, the conditioned air is blown to the right side. The direction of the air-conditioning air blows fluctuates as it is blown straight toward the front toward the rear.

On the other hand, according to the air blowing device 1 according to this embodiment, the portion of the vertical fin 57 corresponding to the outlet 43 in the middle in the vertical direction is relatively shorter in the depth direction than both ends thereof. Therefore, it is possible to prevent the air flow flowing through the duct member 7 from being blocked as much as possible, and to suppress the occurrence of turbulent flow near the vertical fins 57 on the back side of the air outlet 43 as shown in FIGS. 10 and 11. As a result, the ventilation resistance in the louver case 31 caused by the vortex caused by the turbulent flow is reduced, so that smooth ventilation from the air outlet 43 can be realized. Further, since the influence of the turbulent flow on the air flow blown out from the air outlet 43 is reduced, the stability of the air conditioning air in the blowing direction can be improved.

As described above, a preferred embodiment has been described as an example of the technique of the present disclosure. However, the technique of the present disclosure is not limited to this, and can be applied to embodiments in which changes, replacements, additions, omissions, etc. are made as appropriate. In addition, the components described in the attached drawings and the detailed description may include components that are not essential for solving the problem. Therefore, it should not be immediately determined that those non-essential components are essential by the fact that those non-essential components are described in the accompanying drawings and detailed description.

For example, the above embodiment may have the following configuration.

FIG. 12 shows an exploded cross-sectional view of the vehicle air blowing device 1 according to the modified example. In the above embodiment, the configuration in which the air blowing device 1 is a combination of the duct member 5 and the louver case 31 has been described as an example, but the present invention is not limited to this. For example, as shown in FIG. 12, the air blowing device 1 including the duct portion 3 and the air blowing portion 5 may be configured by combining a pair of halves 73 and 75 divided in the vertical direction. .. Further, the air blowing device 1 includes a main body member in which the air blowing portion 5 and a part of the duct portion 3 (for example, the upper surface wall 13, the lower surface wall 15, and the front wall 19) are integrally formed, and the duct portion 3. It may be configured by a combination with a back member forming the back wall 17.

Further, in the above embodiment, the vertical fins 57 are formed in a boomerang shape, but the present invention is not limited to this. The vertical fin 57 has, for example, a U-shaped notch on the back side portion corresponding to the air outlet 43, and both side portions of the notch in the vertical direction extend to the front opening of the louver case 31. It may have an extended shape. In short, in the end edge 61 on the back side of the vertical fin 57 located on the duct member 7 side, the portion corresponding to the outlet 43 in the middle in the vertical direction is the air outlet portion rather than the portion on both ends in the vertical direction. It suffices that the space 63 is located on the protruding side of the duct member 7 and is formed on the duct member 7 side in the air blowing portion 5.

Further, in the above embodiment, the cross section of the duct member 7 is rectangular, but the present invention is not limited to this. The cross-sectional shape of the duct member 7 may be, for example, a circular shape, an elliptical shape, a triangular shape, or any other polygonal shape.

Further, in the above embodiment, the duct member 7 is connected to the relay duct extending from the air conditioner from the right side, but the present invention is not limited to this. The duct member 7 may be connected to the relay duct from the front when viewed from the passenger seat side, for example.

Further, in the above embodiment, the outlet 43 is provided on the passenger seat side of the instrument panel 101 so that the longitudinal direction is the left-right direction, but the present invention is not limited to this. The air blowing device 1 may be provided with the air outlet 43 so that the longitudinal direction is the vertical direction or the vertical diagonal direction. Further, the air blowing device 1 may be provided not only on the passenger seat side but also at a position such as a center console, a side door, or a rear seat side.

As described above, the technique of the present disclosure is useful for a vehicle air blowing device that blows air-conditioned air for air-conditioning a vehicle interior.

1 Vehicle air blower 3 Duct part 5 Air blower 7 Duct member 9 Inflow port 11 Connection part 13 Top wall 15 Bottom wall 17 Back wall 19 Front wall 23 Parallel part 25 Inclined part 27 Outlet 29 Locking claw 31 Louver case 33 Opposing wall 35 Side wall 37 Bracket piece 39 Engagement piece 41 Locking hole 43 Air outlet 45 Bush 47 Mounting hole 49 Insertion part 51 Shaft support hole 53 Angle adjustment gear 55 Shaft support 57 Vertical fin 59 Horizontal fin 61 End edge 63 Space 65 Containment recess 67 Movable fin member 69 Shaft 73,75 Half-split 101 Instrument panel 103 Air outlet

Claims (3)

The duct part (3) through which the air blown from the air conditioner flows, and
An elongated outlet that protrudes from the duct portion (3) in a second direction that is perpendicular to or substantially perpendicular to the first direction in which air flows in the duct portion (3) and extends to the tip in the first direction. It is equipped with an air outlet (5) on which (43) is formed.
The air blowing portion (5) has a pair of facing walls (33) facing each other in the first direction and a third direction orthogonal to the second direction, and these pair of facing walls (33). Have a tapered shape that approaches each other from the duct portion (3) side toward the air outlet (43).
Between the pair of facing walls (33), fins (57) that adjust the direction of the conditioned air blown from the outlet (43) in the first direction are spaced apart from each other along the first direction. There are multiple spaces,
The fin (57) is formed along the inner surface of the facing wall (33) facing the air outlet portion (5), and straddles the outlet (43) in the third direction.
The back edge (61) of the fins (57) located on the duct portion (3) side extends along the facing wall (33), and of the back edges (61). The portion corresponding to the outlet (43) in the middle of the third direction is located on the protruding side of the air outlet (5) with respect to the portions on both ends in the third direction.
Wherein the rear side of the fins (57), a space for circulating air in said first direction by said air blowing unit (5) in (63) is made form,
The width of the space (63) in the third direction is larger than the width of the air outlet (43) in the third direction.
A vehicle air blowing device characterized in that the depth of the space (63) in the second direction is gradually shortened from a central portion in the third direction toward both ends. In the vehicle air blowing device according to claim 1,
An air blowing device for a vehicle, wherein the end edge (61) on the back surface side of the fin (57) is recessed in a bow-shaped curved shape on the protruding side of the air blowing portion (5). In the vehicle air blowing device according to claim 1 or 2.
The duct portion (3) has a back wall (17) corresponding to the back side of the air blowing portion (5).
The back wall (17) approaches the air blowing portion (5) side from the upstream side to the downstream side in the first direction in which air flows, and the first direction and the second direction. A vehicle air blower characterized by being inclined with respect to a direction.

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