阅读说明：本技术 前除霜器喷嘴 (Front defroster nozzle ) 是由 潘永龙 于 2021-04-07 设计创作，主要内容包括：本发明涉及一种前除霜器喷嘴,其具有：连接部,其在汽车的前挡风玻璃的车辆宽度方向中央部处的车辆下方侧与空调装置相连接；喷嘴下部,其被设置在所述连接部的车辆上方侧；喷嘴上部,其在所述喷嘴下部的车辆上方侧处向车辆后方侧被倾斜地设置,并且在上端部处具备于车辆宽度方向上延伸并在仪表板上被开口的吹出开口部,在车辆侧剖视观察时,所述喷嘴上部与所述前挡风玻璃所成的吹出角被设定为,车辆宽度方向两端部处的所述吹出角与车辆宽度方向中央部处的所述吹出角相比而较大。(The invention relates to a front defroster nozzle having: a connecting portion that is connected to an air conditioning device on a vehicle lower side at a vehicle width direction center portion of a front windshield of an automobile; a nozzle lower portion provided on a vehicle upper side of the connecting portion; and a nozzle upper portion that is provided obliquely to a vehicle rear side at a vehicle upper side of the nozzle lower portion, and that includes a blow-out opening portion that extends in a vehicle width direction and is open in an instrument panel at an upper end portion, wherein a blow-out angle formed by the nozzle upper portion and the front windshield glass is set such that the blow-out angle at both vehicle width direction end portions is larger than the blow-out angle at a vehicle width direction center portion, as viewed in a vehicle side cross-section.)

1. A front defroster nozzle having:

a connecting portion that is connected to an air conditioning device on a vehicle lower side at a vehicle width direction center portion of a front windshield of an automobile;

a nozzle lower portion provided on a vehicle upper side of the connecting portion;

and a nozzle upper portion that is provided at an upper side of the nozzle lower portion with an inclination toward a vehicle rear side, and that includes a blow-out opening portion that extends in a vehicle width direction and is open in an instrument panel at an upper end portion, wherein a blow-out angle formed between the nozzle upper portion and the front windshield is set such that the blow-out angle at both end portions in the vehicle width direction is larger than the blow-out angle at a center portion in the vehicle width direction when viewed in a vehicle side cross-section.

2. The front defroster nozzle of claim 1 wherein,

the nozzle upper portion is formed linearly when viewed in cross section from the vehicle side, and an elevation angle of the nozzle upper portion with respect to the vehicle front-rear direction is set such that the elevation angle at both ends in the vehicle width direction is larger than the elevation angle at the center in the vehicle width direction.

3. The front defroster nozzle of claim 2 wherein,

the nozzle upper portion includes a pair of right and left gradually-changing portions between the vehicle width direction both end portions and the vehicle width direction center portion, and the elevation angle at the gradually-changing portions continuously changes between the elevation angle at the vehicle width direction both end portions and the elevation angle at the vehicle width direction center portion.

4. The front defroster nozzle of any one of claim 1 to claim 3 wherein,

the lower portion of the nozzle is inclined toward the front side of the vehicle,

a curved portion that is convex toward the vehicle front side is formed on the vehicle upper side of the lower portion of the nozzle,

the bending angles of the bent portions are set such that the bending angles at both ends in the vehicle width direction are larger than the bending angles at the center portion in the vehicle width direction.

5. The front defroster nozzle of any one of claim 1 to claim 4 wherein,

the nozzle upper portion has a flow path width of a flow path cross section when viewed in a cross-sectional view from a vehicle side, the flow path width being set to be larger at both ends in the vehicle width direction than at a center portion in the vehicle width direction.

Technical Field

The present disclosure relates to a front defroster nozzle.

Background

Conventionally, a front defroster nozzle (hereinafter, appropriately referred to as a "defroster nozzle") that prevents frost and dew condensation of a front windshield (hereinafter, appropriately referred to as a "windshield") and removes fogging has been widely used. The defroster nozzle has a blow-out opening in the dashboard for blowing out the warm air dried by the air conditioner to the windshield.

In recent years, with the electric drive of automobiles, electric components such as heads up displays and the like installed in instrument panels are increasing, and the space for disposing the defroster nozzle is becoming narrow. Therefore, there is a demand for miniaturization of the defroster nozzle.

Here, in order to remove the fogging of the windshield over a wide range, it is necessary to blow the air blown out from the blowout opening of the defroster nozzle over a wide range to both ends of the windshield in the vehicle width direction. However, if the defroster nozzle is small, the length of the outlet opening in the vehicle width direction cannot be set long as in the conventional defroster nozzle, and the curvature of the side surface portion becomes large. Therefore, if the defroster nozzle is small, it becomes difficult to blow the wind to both ends of the windshield in the vehicle width direction.

Therefore, japanese patent application laid-open No. 2015-003605 discloses a defroster nozzle in which guide vanes are provided at a blow-out opening portion in order to send wind to both ends in the vehicle width direction. In this publication, the blowout opening is further divided into two in the front-rear direction in order to eliminate the lack of air blowing to the upper portion of the windshield due to the provision of the guide vanes. That is, the air blowing to the both end portions in the vehicle width direction of the windshield and the air blowing to the center portion in the vehicle width direction are separated, so that interference of the wind is suppressed and the air is blown over a wide range to the entire surface of the windshield.

Disclosure of Invention

However, in the above-described conventional technique, a plurality of guide vanes and a blow-out opening divided into two portions in the front-rear direction are required, and the defroster nozzle has a relatively complicated structure.

The present disclosure takes into consideration the above facts, and provides a front defroster nozzle capable of removing fogging of a windshield over a wide range with a simple structure, despite being small-sized.

A front defroster nozzle of a first aspect of the present disclosure includes: a connecting portion that is connected to an air conditioning device on a vehicle lower side at a vehicle width direction center portion of a front windshield of an automobile; a nozzle lower portion provided on a vehicle upper side of the connecting portion; and a nozzle upper portion provided on a vehicle upper side of the nozzle lower portion. The nozzle upper portion is provided obliquely to the vehicle rear side, and has a blow-out opening portion that extends in the vehicle width direction and is open in the instrument panel at an upper end portion, and a blow-out angle formed by the nozzle upper portion and the front windshield glass is set such that the blow-out angle at both vehicle width direction end portions is larger than the blow-out angle at a vehicle width direction center portion when viewed in a vehicle side cross-section.

According to the front defroster nozzle of the first aspect, the blow-out angles at the both ends in the vehicle width direction are larger than the blow-out angle at the center portion in the vehicle width direction. Thus, the wind blown out from the blowout opening portion easily collides with the windshield at both ends in the vehicle width direction. As a result, at both ends in the vehicle width direction, the wind spreads in the vehicle width direction on the windshield. On the other hand, the blow-out angle at the vehicle width direction center portion is smaller than the blow-out angles at the vehicle width direction both end portions. Therefore, at the vehicle width direction center portion, the wind easily flows along the windshield, and is efficiently conveyed upward of the windshield. This makes it possible to efficiently blow air over a wide range of the windshield. However, the "blow-out angle" referred to herein is an angle formed between a line extending in the vector direction of the vehicle longitudinal direction center portion above the nozzle and the front windshield at a point where the line intersects the front windshield.

A front defroster nozzle of a second aspect of the present disclosure is the front defroster nozzle of the first aspect in which the nozzle upper portion is formed linearly when viewed in a cross-sectional view from a vehicle side, and an elevation angle of the nozzle upper portion with respect to a vehicle front-rear direction is set such that the elevation angle at both ends in the vehicle width direction is larger than the elevation angle at a center portion in the vehicle width direction.

According to the front defroster nozzle of the second aspect, the nozzle upper portion is formed linearly as viewed in a vehicle-side cross section. In this case, the direction of the air blown out from the outlet opening is substantially the same as the direction of the upper portion of the nozzle when viewed in cross section from the vehicle side. That is, the angle of elevation of the blown wind with respect to the vehicle front-rear direction is approximated to the angle of elevation of the nozzle upper portion. By forming the nozzle upper portion in a straight line in this manner, air can be smoothly blown toward the windshield without obstructing the flow of air from the air conditioner. However, the term "linear" as used herein is a concept including a slightly curved shape.

A front defroster nozzle of a third aspect of the present disclosure is the front defroster nozzle of the second aspect in which the nozzle upper portion includes a pair of left and right gradually-changing portions between both ends in the vehicle width direction and a center portion in the vehicle width direction, and the elevation angle at the gradually-changing portions continuously changes between the elevation angle at both ends in the vehicle width direction and the elevation angle at the center portion in the vehicle width direction.

According to the front defroster nozzle of the third aspect, the vehicle width direction both end portions and the vehicle width direction center portion are smoothly coupled at the nozzle upper portion. This can suppress the occurrence of pressure loss due to the generation of vortices between the vehicle width direction both end portions and the vehicle width direction center portion at the upper portion of the nozzle. Therefore, the nozzle upper portion can further smoothly blow air without obstructing the air flow of the air blown from the air conditioner.

A front defroster nozzle of a fourth aspect of the present disclosure is the front defroster nozzle of any one of the first to third aspects, wherein the nozzle lower portion is inclined toward the vehicle front side, a bent portion that is convex toward the vehicle front side is formed on a vehicle upper side of the nozzle lower portion, and a bent angle of the bent portion is set such that the bent angle at both ends in the vehicle width direction is larger than the bent angle at a center portion in the vehicle width direction.

According to the front defroster nozzle of the fourth aspect, the wind is made to easily flow toward both ends in the vehicle width direction that are formed so that the buckling angle is large.

A front defroster nozzle of a fifth aspect of the present disclosure is the front defroster nozzle of any one of the first to fourth aspects in which a flow passage width of a flow passage cross section of the nozzle upper portion when viewed in a cross section taken on a vehicle side is set such that the flow passage width at both ends in the vehicle width direction is larger than the flow passage width at a center portion in the vehicle width direction.

According to the front defroster nozzle of the fifth aspect, at the nozzle upper portion, the wind is made to easily flow toward both ends in the vehicle width direction that are formed so that the flow passage width is large.

Effects of the invention

As described above, the front defroster nozzle of the first aspect has an excellent effect of being able to remove fogging of the windshield over a wide range with a simple structure, even though it is small in size.

The front defroster nozzle of the second aspect has an excellent effect that the direction of the wind blowing toward the windshield can be controlled by the angle of elevation of the upper portion of the nozzle while the wind speed at the blow-out opening portion is ensured.

The front defroster nozzle of the third aspect has an excellent effect that the wind speed at the blowing opening portion can be further secured.

The front defroster nozzle of the fourth aspect has an excellent effect that the amount of air blown out from both ends in the vehicle width direction of the outlet opening can be increased.

The front defroster nozzle of the fifth aspect has an excellent effect that the amount of air blown out from both ends in the vehicle width direction of the outlet opening can be increased.

Drawings

The preferred embodiments of the present invention will be described in detail based on the following drawings, in which:

fig. 1 is a side sectional view showing an enlarged main part of a vehicle to which a defroster nozzle according to an embodiment is applied.

Fig. 2 is a perspective view of a defroster nozzle according to an embodiment.

Fig. 3 is a front view of the defroster nozzle of fig. 2 as viewed from the front side of the vehicle.

Fig. 4 is a side view of the defroster nozzle of fig. 2 from the left side of the vehicle.

Fig. 5A is a side sectional view of a main portion at a widthwise central left portion of the vehicle including a line a-a section of fig. 3.

Fig. 5B is a side sectional view of a main portion at a widthwise left side portion of the vehicle including a section of line B-B of fig. 3.

Fig. 6 is a graph showing a relationship between a distance from the defroster nozzle to the center in the vehicle width direction and a blow-out angle according to one embodiment.

Fig. 7 is a flow velocity distribution diagram at the blow-out opening portion in the case where the defroster nozzle according to the embodiment is applied.

Fig. 8A is a flow velocity distribution diagram at a cross section of line a-a of fig. 3.

Fig. 8B is a flow velocity distribution diagram at a section of line B-B of fig. 3.

Fig. 9A is a flow velocity distribution diagram on a windshield in the case where the defroster nozzle of the comparative example is applied.

Fig. 9B is a flow velocity distribution diagram on the windshield in the case where the defroster nozzle according to the embodiment is applied.

Detailed Description

A front defroster nozzle according to an embodiment of the present invention will be described below with reference to fig. 1 to 9. Note that arrow FR shown appropriately in the drawings indicates the vehicle front side, arrow UP indicates the vehicle upper side, and arrow RH indicates the vehicle width direction right side. In the following description, when the front-rear direction, the up-down direction, and the left-right direction are used without specific description, the front-rear direction of the vehicle front-rear direction, the up-down direction of the vehicle up-down direction, and the left-right direction of the vehicle (vehicle width direction) are indicated.

As shown in fig. 1, an instrument panel 14 is provided at a front portion of a vehicle 10 below a front windshield 12 (hereinafter referred to as a "windshield 12"). Further below the instrument panel 14, an HVAC (Heating, Ventilating and Air-Conditioning Unit) 16 and a front defroster nozzle 18 (hereinafter, referred to as "defroster nozzle 18") are provided as Air Conditioning devices.

The defroster nozzle 18 has a connection portion 20 that is provided at a vehicle width direction center portion and is connected to the HVAC16, and an airflow direction adjustment portion 22 that is provided above the connection portion 20 and is formed in a substantially L shape when viewed from the side, the airflow direction adjustment portion 22 extending upward. As shown in fig. 1 and 4, the airflow direction adjusting portion 22 includes a curved portion 24 that is curved so as to be convex toward the vehicle front side. A nozzle lower portion 26 inclined to the vehicle front side is provided at the lower side of the curved portion 24, and a nozzle upper portion 28 inclined to the vehicle rear side is provided at the upper side of the curved portion 24. As shown in fig. 1, the nozzle upper portion 28 is opened on the instrument panel 14 through a blow-out opening portion 30 formed at an upper end portion.

As shown in fig. 2 and 3, the defroster nozzle 18 is formed in a shape that gradually expands as it goes upward in a front view so that its length in the vehicle width direction becomes longer. As shown in fig. 2, the outlet opening 30 extends in the vehicle width direction and is formed in a substantially rectangular shape in plan view. The length of the outlet opening 30 in the vehicle width direction is formed to be approximately one third of the length of the instrument panel 14 (see fig. 1) in the vehicle width direction. In the present embodiment, as an example, the length of the outlet opening 30 in the vehicle width direction is set to 450 mm.

As shown in fig. 2, three ribs 32 are formed at the nozzle upper portion 28. The center rib 32A provided at the vehicle width direction center is formed so as to be larger than the right rib 32B provided at the right side and the left rib 32C provided at the left side. The outlet opening 30 is substantially quartered in the vehicle width direction by the center rib 32A, the right rib 32B, and the left rib 32C. The right rib 32B and the left rib 32C extend toward the nozzle lower portion 26 and function as guide vanes.

As shown in fig. 3, the defroster nozzle 18 includes a center portion 34 provided at a center portion in the left-right direction in a front view, a pair of side portions 36 provided at both end portions in the left-right direction, and a pair of left and right gradually-changing portions 38 that connect the center portion 34 and the side portions 36 to each other. The right side portion 36A, the right gradually-changing portion 38A, and the right center portion 34A, which are provided at the right side, approximately trisect the right side of the defroster nozzle 18 in the vehicle width direction. Likewise, the left side portion 36B, the left gradually-changing portion 38B, and the left center portion 34B provided at the left side substantially equally divide the left side of the defroster nozzle 18 in the vehicle width direction.

A left side view of the defroster nozzle 18 is illustrated in fig. 4. As shown in the drawing, the outlet opening 30 is provided on the vehicle front side of the connection portion 20. The curved portion 24 of the airflow direction adjuster 22 is provided on the vehicle front side of the outlet opening 30.

Hereinafter, the difference in shape between the center portion 34, the side portion 36, and the gradually-changing portion 38 of the defroster nozzle 18 will be described in detail. Since the defroster nozzle 18 in the present embodiment is formed symmetrically, only the left side thereof will be described, and the right side thereof will not be described.

In fig. 5A, a side cross section of a main portion of the vehicle 10 including a line a-a cross section at the left center portion 34B of fig. 3 is illustrated, and in fig. 5B, a side cross section of a main portion of the vehicle 10 including a line B-B cross section at the left side portion 36 of fig. 3 is illustrated. As shown in these figures, the nozzle upper portion 28 and the nozzle lower portion 26 are each formed substantially linearly when viewed in a cross-sectional view from the vehicle side. In fig. 5A and 5B, a flow path center line of the airflow direction adjusting portion 22 in a side cross-sectional view is indicated by a one-dot chain line, and a vehicle front-rear direction is indicated by a two-dot chain line.

Here, when the elevation angle of the nozzle upper portion 28 with respect to the vehicle front-rear direction is set to α, the elevation angle α at the left side portion 36B shown in fig. 5B is set to α₂Is set to an angle of elevation α with respect to the left center portion 34B shown in FIG. 5A₁Is comparatively large (alpha)₂＞α₁)。

The inclination of the windshield 12 with respect to the vehicle front-rear direction is an inclination angle β. The windshield 12 is slightly curved in the vehicle width direction, but is formed in a substantially planar shape. Therefore, the inclination angle β at the vehicle width direction central portion shown in fig. 5A₁And inclination angles β at both ends in the vehicle width direction shown in fig. 5B₂Are formed at substantially equal angles (beta)₁≒β₂)。

Therefore, the angle formed by the direction of the wind blown out from the outlet opening 30 and the windshield 12, that is, the angle α - β formed by the nozzle upper portion 28 and the windshield 12 is set to the angle α at the left side portion 36B shown in fig. 5B₂―β₂And an angle alpha at the left central portion 34B shown in FIG. 5A₁―β₁Is comparatively large (alpha)₂―β₂＞α₁―β₁). Specifically, as shown in fig. 5A, at the left center portion 34B, the angle α formed between the nozzle upper portion 28 and the windshield 12 is₁―β₁Is formed to be smaller (alpha) than 30 DEG₁―β₁< 30 °). On the other hand, as shown in fig. 5B, at the left side portion 36B, the angle α formed by the nozzle upper portion 28 and the windshield 12 is₂―β₂Is set to be larger than 45 ° (α)₂―β₂＞45°)。

Since the nozzle upper portion 28 is formed substantially linearly in a vehicle side cross-sectional view, the direction of the conditioned air H blown out from the outlet opening portion 30 is substantially equal to the direction of the nozzle upper portion 28 in the vehicle side cross-sectional view. That is, an angle of elevation α ', not shown, of the blown air-conditioned air H with respect to the vehicle longitudinal direction is approximated to the angle of elevation α (α' ≈ α) of the nozzle upper portion 28. Therefore, an angle α '- β (hereinafter, referred to as "blowing angle") between the direction of the air-conditioning wind H blown out from the outlet opening 30 and the windshield 12 is approximated to an angle α - β (α' — β ≈ α - β) between the center line of the flow path of the nozzle upper portion 28 and the windshield 12.

Therefore, hereinafter, the change in the blow-out angle will be described in detail with reference to fig. 6, with α — β being the blow-out angle. In fig. 6, the relationship between the distance L from the center of the defroster nozzle 18 on the right and left and the blow-out angle α - β is shown in a graph. In the present embodiment, the central blow-out angle α at the left central portion 34B is set as an example₁―β₁Is formed as alpha₁―β₁25 ° and a side blow-out angle α at the left side portion 36B₂―β₂Is formed as alpha₂―β₂50 deg.. As shown in the figure, is provided between the left center portion 34B and the left side portion 36BAt the left gradually-changing portion 38B of (1) and the gradually-changing blow-out angle α thereof₃―β₃At a central blow-off angle alpha₁―β₁Angle of side blow-out alpha₂―β₂Continuously changing in the same way. As described above, since the inclination angle β of the windshield 12 is substantially fixed, the elevation angle α at the left gradation portion 38B is substantially constant₃To become alpha₁＜α₃＜α₂Is formed in the manner of (1).

Here, as shown in fig. 5A and 5B, the flexion angle of the flexion portion 24 (the angle formed by the nozzle upper portion 28 and the nozzle lower portion 26 when viewed in a side cross-sectional view) is γ. At this time, the buckling angle γ at the left side portion 36B shown in fig. 5B₂Is set to the same angle γ as the bending angle at the left central portion 34B shown in fig. 5A₁Compared to larger.

Further, when the width of the flow passage section orthogonal to the flow direction of the air-conditioned air H at the nozzle upper portion 28 is set as the flow passage width S, the flow passage width S at the left side portion 36B shown in fig. 5B is set as the flow passage width S₂Is set to have the same width S as the flow path at the left center portion 34B shown in FIG. 5A₁Compared to larger.

(action and Effect of the present embodiment)

Next, the operation and effect of the present embodiment will be described.

According to the defroster nozzle 18 of the present embodiment, the side blow-out angle α at the left side portion 36B₂―β₂Is set to be larger than 45 ° (α)₂―β₂> 45 °). The right side of the defroster nozzle 18 is also configured in the same manner. Thus, the air-conditioning wind H blown out from the right side portion 36A and the left side portion 36B easily collides with the windshield 12. Therefore, the air-conditioning wind H tends to spread toward the vehicle width direction at both vehicle width direction end portions 12B (see fig. 9B) of the windshield 12.

On the other hand, the central blow-out angle α at the left central portion 34B₁―β₁Is formed to be smaller (alpha) than 30 DEG₁―β₁< 30 °). Namely, the angle of elevation α of the nozzle upper portion 28 at the left center portion 34B₁Is set to be closer to the windshield 12 angle of inclination beta₁. The right side of the defroster nozzle 18 is also configured in the same manner. This facilitates the flow of the air-conditioning wind H blown out from the center portion 34 along the windshield 12. Therefore, the air-conditioning wind H is efficiently sent upward of the windshield 12 at the vehicle transverse direction central portion 12A (see fig. 9B) of the windshield 12.

In fig. 8A, a flow velocity distribution diagram at a main portion side cross section of the vehicle 10 including a line a-a cross section of the left center portion 34B is illustrated. On the other hand, in fig. 8B, a flow velocity distribution diagram at a main portion side cross section of the vehicle 10 including a B-B line cross section of the left side portion 36B is illustrated. The shade of the color indicates the range of the flow rate, respectively, and it appears that the stronger the color, the faster the flow rate. When the flow velocity distribution in the vicinity of the windshield 12 is compared in fig. 8A and 8B, it is observed that the wind velocity can be secured at the vehicle width direction end portion 12B of the windshield 12 to the same extent as the vehicle width direction central portion 12A of the windshield 12.

Fig. 9A shows a flow velocity distribution diagram on the windshield 12 when an unillustrated defroster nozzle having a length of 600mm in the vehicle width direction of the outlet opening is applied as a comparative example of the defroster nozzle 18 according to the present embodiment. On the other hand, fig. 9B is a flow velocity distribution diagram on the windshield 12 in the case where the defroster nozzle 18 according to the present embodiment having the length of the outlet opening 30 in the vehicle width direction of 450mm is applied. Similarly to fig. 8, it appears that the thicker the color, the faster the flow rate. When the left and right end portions 12B of the windshield 12 are compared in fig. 9A and 9B, it can be seen that the small-sized defroster nozzle 18 according to the present embodiment can secure a wind speed to the left and right end portions 12B of the windshield 12 in a wider range than the large-sized defroster nozzle of the comparative example. Therefore, even if the defroster nozzle 18 has a small and simple structure, air can be efficiently blown over a wide range of the windshield 12, and fogging can be removed over a wide range.

Further, according to the defroster nozzle 18 of the present embodiment, the nozzle upper portion 28 is formed substantially linearly in a vehicle side cross-sectional view. At this time, the direction of the air-conditioned air H blown out from the outlet opening 30 is substantially equal to the direction of the nozzle upper portion 28 when viewed in a cross-sectional view from the vehicle side. That is, the angle of elevation α 'of the blown air-conditioned air H with respect to the vehicle front-rear direction is approximated to the angle of elevation α (α' ≈ α) of the nozzle upper portion 28. Therefore, the angle α '- β formed by the direction of the conditioned air H and the windshield 12 is approximated to the blow-out angle α - β (α' — β ≈ α - β) formed by the nozzle upper portion 28 and the windshield 12. Therefore, the direction of the air-conditioning wind H blown against the windshield 12 can be controlled by the elevation angle α of the nozzle upper portion 28.

Further, by forming the nozzle upper portion 28 substantially linearly in this manner, air can be smoothly blown toward the windshield 12 without the flow of air from the HVAC16 being obstructed by the nozzle upper portion 28. Therefore, the wind speed at the outlet opening 30 can be ensured.

The nozzle upper portion 28 includes a pair of right and left gradually-changing portions 38 between the side portions 36 and the central portion 34. That is, at the nozzle upper portion 28, the side portions 36 and the center portion 34 are smoothly joined. This can prevent the occurrence of pressure loss due to the generation of vortices between the side portion 36 having a large elevation angle α and the center portion 34 having a small elevation angle α of the nozzle upper portion 28. Therefore, the nozzle upper portion 28 can supply air more smoothly without obstructing the air flow of the air-conditioning air H supplied from the HVAC 16. Therefore, the wind speed at the outlet opening 30 can be further ensured.

Fig. 7 illustrates a flow velocity distribution diagram at the blowout opening 30. Similarly to fig. 8 and 9, it is shown that the flow rate is faster as the color is thicker. In general, since the defroster nozzle is formed in a substantially fan-like shape in a front view, there is a problem that air is more likely to be blown toward the center portion than toward the side portions, and the air volume in the side portions is insufficient at the blow-out opening portion. However, according to the defroster nozzle 18 of the present embodiment, the buckling angle γ at the left side portion 36B₂Is set to be equal to the bending angle gamma of the left central portion 34B₁Compared to larger. In addition, the flow passage at the left side portion 36BWidth S₂Is set to have a flow passage width S at the left central portion 34B₁Compared to larger. Therefore, the defroster nozzle 18 is configured to facilitate the flow of the wind direction side portion 36. This makes it possible to increase the speed of the air blown out from the side portion 36 of the outlet opening 30, as shown in fig. 7. Therefore, the volume of air blown out from the side portion 36 can be increased.

[ supplementary explanation of the above embodiment ]

In the above-described embodiment, the nozzle upper portion 28 and the nozzle lower portion 26 are described as being formed substantially linearly when viewed in a vehicle side cross-section, but the present invention is not limited thereto, and the nozzle lower portion may be formed by bending, for example.

In the above embodiment, the gradient portion 38 is formed so as to have the angle of elevation α₃Elevation angle alpha at center 34₁Angle of elevation alpha with respect to the side 36₂The present invention is not limited to the above-described embodiments, but may be applied to various types of electronic devices. For example, the defroster nozzle may not have the gradually changing portion.

Also, although in the above-described embodiment, the bending angle γ at the left side portion 36B is set as₂Is set to the bending angle gamma with respect to the left central portion 34B₁The description has been made for the case of being larger than the same. For example, even if the buckling angle γ at the left side portion 36B₂Angle of flexion γ with respect to left central portion 34B₁Same (gamma)₂＝γ₁) However, it is only necessary to make the relationship between the magnitudes of the blow-out angles α₂―β₂＞α₁―β₁And (4) finishing.

In addition, in the above embodiment, the flow path width S at the left side portion 36B is set as₂Is set to have a flow path width S at the left central portion 34B₁The description has been made for the case of being larger than the same. For example, the flow passage width S at the left side portion 36B₂And the width S of the flow path at the left central portion 34B₁May be the same as (S)₂＝S₁)。

In the above-described embodiment, the blow-out opening 30 is formed in a substantially rectangular shape in plan view and formed in a length of approximately one-third of the length of the instrument panel 14 in the vehicle width direction. For example, the outlet opening may be provided so that the side portions are positioned forward of the central portion.

In the above embodiment, the case where the three ribs 32 are formed in the nozzle upper portion 28 has been described, but the present invention is not limited thereto, and the nozzle upper portion may not include the ribs.

In the above embodiment, the front defroster nozzle 18 which is not integrally formed with the side defroster has been described, but the front defroster nozzle is not limited to this, and the front defroster nozzle may be integrally formed with the side defroster which removes fogging of the side window.

In the above embodiment, the case where the left and right side portions 36A, B, the gradually-changing portion 38A, B, and the center portion 34A, B are each formed so as to approximately bisect the right side or the left side of the defroster nozzle 18 in the vehicle width direction has been described. However, the present invention is not limited to this, and the sizes of the side portion, the gradually changing portion, and the center portion may be appropriately changed according to the size and the arrangement position of the entire defroster nozzle.

In the above embodiment, the defroster nozzle 18 is formed symmetrically in the left-right direction, but the defroster nozzle is not limited to this and may be formed asymmetrically in the left-right direction.