Wind direction adjustment device

Abstract

To provide a wind direction adjustment device capable of supplying winds of various properties. [Solution] The wind direction adjustment device 1 includes two sets of air distribution bodies 20 that have a rotation axis 22 in the first direction, are arranged side by side in the second direction and can rotate independently of each other, a negative pressure section 13 that is set in the air passage 5 upstream of the rotation axis 22 of the air distribution body 20 in the air passage direction and between the air distribution bodies 20 in the second direction and generates negative pressure downstream in the air passage direction, and a convex portion 15 that protrudes toward the downstream in the air passage direction toward the top portion 16 located downstream of the rotation axis 22 in the air passage direction, narrowing the air passage 5 in the second direction. The air distribution body 20 has an extension portion 27a formed on at least one other fin 27 whose tip is located upstream of the rotation axis 22 in the air passage direction, and forms a space portion 30 between the negative pressure section 13 and the air distribution body 20 in the air passage 5, the width of which increases or decreases in the second direction according to the rotation angle of the air distribution body 20.

Description

Technical Field

[0001] The present invention relates to an air direction adjusting device provided with a rotatable air distribution body.

Background Art

[0002] Conventionally, in vehicles such as automobiles, an air direction adjusting device that appropriately changes the direction of conditioned air introduced from the duct of an air conditioner according to the rotation angles of vertical fins and horizontal fins is known (see, for example, Patent Document 1).

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] For example, in order to improve the comfort of the passenger compartment space in view of the automatic driving of a vehicle, in the air direction adjusting device, not only is it desired to send conditioned air to a desired location simply by adjusting the fin angle, but also to be able to send conditioned air with variations.

[0005] The present invention has been made in view of such points, and an object thereof is to provide an air direction adjusting device capable of sending winds with various properties.

Means for Solving the Problems

[0006] An airflow adjustment device according to an aspect of the present invention comprises a case body that partitions an air passage internally; two sets of air distribution bodies having a pivot axis in a first direction intersecting the airflow direction of the air passage, and arranged side by side in a second direction intersecting the airflow direction and the first direction, and rotatable independently of each other; a negative pressure section set in the air passage upstream of the pivot axis of the air distribution bodies in the airflow direction and between the air distribution bodies in the second direction, which generates negative pressure downstream of the airflow direction; and downstream of the pivot axis in the airflow direction The air distribution body has a protrusion that projects toward the downstream side in the ventilation direction toward the top where it is located, narrowing the ventilation passage in the second direction, and each of the air distribution body has at least one fin and at least one other fin having an extension that extends toward the upstream side in the ventilation direction toward the fin, the tip of which is located upstream of the rotation axis in the ventilation direction, and a space is formed in the ventilation passage between the extension and the negative pressure portion, the width of which increases or decreases in the second direction according to the rotation angle of the air distribution body. [Effects of the Invention]

[0007] According to the present invention, it becomes possible to deliver wind with diverse properties. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view showing the neutral state of the air distribution body of a wind direction adjustment device according to one embodiment of the present invention. [Figure 2] This is a cross-sectional view showing the airflow state of one of the wind direction adjustment devices. [Figure 3] A cross-sectional view showing other airflow configurations of the same wind direction adjustment device. [Figure 4] A cross-sectional view showing yet another airflow configuration of the same wind direction adjustment device. [Figure 5] This is a longitudinal cross-sectional view of the same wind direction adjustment device. [Figure 6] This is a disassembled perspective view of the same wind direction adjustment device. [Figure 7] This is a perspective view of the wind direction adjustment device shown above. [Figure 8]These are explanatory diagrams showing the airflow when the wind direction adjustment device is used, with (a) showing the state in Figure 1, (b) showing the state in Figure 2, (c) showing the state in Figure 3, and (d) showing the state in Figure 4. [Modes for carrying out the invention]

[0009] Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

[0010] In Figures 6 and 7, 1 is an airflow adjustment device. The airflow adjustment device 1 is also called an air outlet, ventilator, register, etc., and adjusts the direction of airflow from an air conditioning system. To clarify the explanation below, the airflow adjustment device 1 is defined as having a front side, front side, or near side on the leeward side from which the air is blown out, and a rear side, back side, or far side on the opposite side, i.e., the windward side from which the air is received. The directions are defined as the left-right direction or width direction and the up-down direction when viewed from the front. In this embodiment, the airflow adjustment device 1 is applied to an air conditioning system for a vehicle such as an automobile. The airflow adjustment device 1 may be placed in any position, but in the drawings, it is assumed that the arrow FR side is the front side, the arrow RR side is the rear side, the arrow L side is the left side, the arrow R side is the right side, the arrow U side is the top side, and the arrow D side is the bottom side. These directions are illustrated as examples only and may be changed as appropriate depending on the installation position and orientation of the airflow adjustment device 1.

[0011] The airflow adjustment device 1 comprises a case body 3. The case body 3 is also called a duct. The case body 3 is formed in a cylindrical shape in the front-rear direction. The ventilation passage 5 is enclosed inside the case body 3. The direction parallel to the central axis of the case body 3 is the ventilation direction of the ventilation passage 5. In this embodiment, the ventilation direction of the ventilation passage 5 is in the front-rear direction, and air is vented from the rear to the front. That is, in the ventilation passage 5, the rear side is the upstream side in the ventilation direction, and the front side is the downstream side in the ventilation direction.

[0012] The case body 3 has a predetermined length in the direction of airflow of the ventilation passage 5. An inlet 6 is formed at the rear end of the case body 3 to receive air, i.e., conditioned air, into the ventilation passage 5, and an outlet 7 is formed at the front end of the case body 3 to discharge conditioned air from the ventilation passage 5. The ventilation passage 5 is formed between the inlet 6 and the outlet 7, connecting them. Conditioned air passes from the inlet 6 to the outlet 7. The inlet 6 and the outlet 7 are both elongated horizontally. The case body 3 may be formed as a single unit or by combining multiple members.

[0013] In this embodiment, the case body 3 is flattened in the vertical direction, which is a first direction intersecting or perpendicular to the ventilation direction, and is elongated in the horizontal direction, which is a second direction intersecting or perpendicular to the ventilation direction and the vertical direction. Therefore, the airflow adjustment device 1 is formed in a horizontal, thin shape. In the illustrated example, the case body 3 is rectangular and has a pair of end walls 10 arranged vertically and a pair of side walls 11 arranged horizontally, as shown in Figures 1 and 5.

[0014] A negative pressure section 13 is formed in the case body 3, located in the ventilation passage 5. The negative pressure section 13 is an obstacle that receives the conditioned airflow from the upstream side passing through the ventilation passage 5, and has the function of a branching section that branches the airflow in the left and right directions within the ventilation passage 5. Due to this branching of the conditioned airflow, a negative pressure section with lower pressure than other parts of the ventilation passage 5 is created downstream of the negative pressure section 13 in the ventilation direction, and a portion of the conditioned airflow is drawn into the central part of the ventilation passage 5. In this embodiment, the negative pressure section 13 is located in the central or approximate central part in the left and right direction of the ventilation passage 5. In the illustrated example, the negative pressure section 13 is columnar in shape, extending vertically between the end wall sections 10, 10. The negative pressure section 13 can have any cross-sectional shape, such as a circular, square, or triangular shape, as long as it can generate negative pressure on the downstream side in the ventilation direction. In this embodiment, for example, it is formed in a cross-section with planes extending in the front-rear, left-right, and right-handed directions, that is, an isosceles trapezoidal shape when viewed from the top-down direction, with the rear side, which is the upstream side in the ventilation direction, being longer in the left-right direction than the front side, which is the downstream side in the ventilation direction. The size of the negative pressure section 13 can also be set arbitrarily as long as it can generate the necessary negative pressure.

[0015] Furthermore, protrusions 15 are formed on the side walls 11 of the case body 3. The protrusions 15 have the function of bending the conditioned air passing through the ventilation passage 5 toward the center of the ventilation passage 5 in the left-right direction. The protrusions 15 are located downstream of the negative pressure section 13 in the ventilation direction. The protrusions 15 are located downstream of the negative pressure section 13 and upstream of the air outlet 7. The protrusions 15 project into the interior of the ventilation passage 5 so as to narrow the ventilation passage 5 in the left-right direction. The left and right protrusions 15 are at equal or approximately equal positions to each other in the ventilation direction. The protrusions 15 are formed in a triangular shape when viewed from above. The protrusions 15 have an upstream flow straightening section 17 that slopes toward the center of the ventilation passage 5 in the left-right direction toward the top 16 that protrudes the most into the ventilation passage 5, and a downstream flow straightening section 18 that slopes outward from the top 16 in the left-right direction toward the outside of the ventilation passage 5. In this embodiment, the inclination of the upstream flow straightening section 17 is set to be smaller than the inclination of the downstream flow straightening section 18 with respect to the front-to-back direction, which is the airflow direction.

[0016] Inside the case body 3, i.e., in the ventilation passage 5, two sets (a pair) of air distribution elements 20 are arranged. The air distribution elements 20 are rotatable and adjust the direction of the conditioned air blown out from the outlet 7 according to their rotation. In this embodiment, the air distribution elements 20 have a rotation axis 22 in the vertical direction and are rotatable in the left-right direction, and have the function of controlling the amount by which the conditioned air from the upstream side is divided in the left-right direction of the ventilation passage 5 according to the rotation angle. The rotation axis 22 is located downstream of the negative pressure section 13 and upstream of the convex section 15 (upstream rectifier section 17) in the ventilation direction. Unless otherwise specified, the air distribution elements 20 will be described below based on their neutral position.

[0017] As shown in FIGS. 5 and 6, the air distribution body 20 has a rotating part 23 at the top and bottom, and each rotating part 23 is rotatably held by a rotating receiving part 24 formed on the upper and lower end walls 10 of the case body 3. One of the rotating part 23 and the rotating receiving part 24 is a shaft part, and the other is a hole part or a concave part. In the present embodiment, the rotating part 23 is a shaft part, the rotating receiving part 24 is a round hole-shaped hole part or a concave part, and the central axis of the rotating part 23 is the rotation axis 22. The air distribution bodies 20 are arranged side by side at positions separated from each other in the left-right direction. In the illustrated example, the air distribution bodies 20 are located at an equal distance or approximately an equal distance from the negative pressure part 13 in the left-right direction. That is, the negative pressure part 13 is located at the position between the air distribution bodies 20 in the left-right direction.

[0018] As shown in FIGS. 1, 5 and 6, each air distribution body 20 has at least one first fin 26 and at least one other fin 27. In the present embodiment, each air distribution body 20 has a pair of first fins 26 in the left-right direction, and has one other fin 27 between these first fins 26 in the left-right direction. Without being limited to this, as long as the rotation of the air distribution body 20 is not hindered, it is not necessary for the other fin 27 to be located between the first fins 26. The first fin 26 and the other fin 27 are also called louvers or the like, and are each formed in a plate shape having a thickness direction in the left-right direction, and the main surfaces in the thickness direction are each a rectifying surface. The first fins 26 are formed in shapes that are equal or approximately equal to each other. For example, the first fin 26 is a rectangular shape that is long in the up-down direction.

[0019] Also, the other fins 27 are located at the intermediate portions of one pair of fins 26, 26. The other fins 27 are formed in a rectangular shape. The other fins 27 are provided with an extension portion 27a extending to the upstream side, i.e., the rear side in the ventilation direction, at the upstream end with respect to one fin 26. The extension portion 27a is located away from the side of the negative pressure portion 13 and forms a space portion 30 through which air can pass between the negative pressure portion 13 in the ventilation passage 5. That is, the space portions 30 are located on both sides of the negative pressure portion 13 in the ventilation passage 5. The rear end portion of the extension portion 27a extends rearward from the rear end portion of the negative pressure portion 13. According to the rotation of the air distribution body 20, the left-right width of the space portion 30 is increased or decreased by the extension portion 27a. And in the present embodiment, one fin 26 and the other fins 27 are connected to each other by a connecting portion 32 at the upper and lower positions and are integrated. In the illustrated example, the air distribution body 20 forms a rectangular frame shape or each cylindrical shape by one pair of fins 26, 26 and the connecting portions 32, 32, and the other fins 27 are integrally formed inside thereof.

[0020] The connecting portion 32 is plate-shaped and is formed, for example, in a rectangular shape, and in the present embodiment, in a square shape. A rotating portion 23 is disposed at the central portion of the connecting portion 32. Therefore, the other fins 27 are located between the rotating portions 23 in the vertical direction, and the rotation axis 22 is at the central portion in the thickness direction of the other fins 27 when viewed from the vertical direction. Also, the extension portion 27a of the other fins 27 extends rearward from the central portion of the rotating portion 23, i.e., from the rotation axis 22. In the present embodiment, the rear end portions of one fin 26 and the other fins 27 extend rearward from the rotation axis 22, and the front end portions of one fin 26 and the other fins 27 extend forward from the rotation axis 22.

[0021] And each air distribution body 20 is rotatable independently of each other. In the present embodiment, each air distribution body 20 is manually rotated by a link 34 which is an operation portion. Not limited to this, each air distribution body 20 may be configured to be rotated electrically or the like via an actuator such as a motor.

[0022] Link 34 extends in the front-rear direction, with its rear end connected to the front end of the other fins 27 of each air distribution body 20, and its front end facing the outlet 7, making it operable by the user via the outlet 7.

[0023] In this embodiment, a downstream fin 36 is arranged inside the case body 3, i.e., in the ventilation passage 5. The downstream fin 36, also called a louver, is rotatably arranged in a direction intersecting the air distribution body 20, i.e., one and the other fins 26, 27, and adjusts the direction of the conditioned air blown out from the outlet 7 according to its rotation. In this embodiment, the downstream fin 36 has a rotation axis 38 in the left-right direction and is rotatable in the up-down direction, adjusting the airflow direction in the up-down direction. The rotation axis 38 is located downstream of the protrusion 15 in the ventilation direction and faces the outlet 7. In other words, at least the top 16 of the protrusion 15, and in this embodiment, substantially the entire protrusion 15, is located between the rotation axis 22 of the air distribution body 20 and the rotation axis 38 of the downstream fin 36 in the ventilation direction. That is, the downstream fin 36 is located downstream of the air distribution body 20 in the ventilation direction. Therefore, in this embodiment, one and the other fins 26, 27 of the air distribution body 20 are upstream fins.

[0024] The downstream fin 36 is formed in a plate shape with a thickness in the vertical direction, and the main surfaces in the thickness direction each serve as a flow-rectifying surface. In this embodiment, the downstream fin 36 has a rectangular shape that is elongated in the left-right direction.

[0025] In the illustrated example, there are multiple downstream fins 36, for example three, which are positioned apart from each other in the vertical direction. In this embodiment, the downstream fins 36 are integrally connected to each other by connecting parts 40 to form a downstream air distribution body 41. Therefore, in this embodiment, the air distribution body 20 is the upstream air distribution body. The downstream air distribution body 41 has rotating parts 43 on the left and right sides, and each rotating part 43 is rotatably held by a rotating receiving part 44 formed on the left and right side walls 11 of the case body 3. One of the rotating part 43 and the rotating receiving part 44 is a shaft part, and the other is a hole or recess. In this embodiment, the rotating part 43 is a shaft part, the rotating receiving part 44 is a round hole or recess, and the central axis of the rotating part 43 is the rotation axis 38.

[0026] The connecting portion 40 is plate-shaped, for example, rectangular, and in this embodiment, square. The rotating portion 43 is located in the center of the connecting portion 40.

[0027] The downstream fins 36 may be configured to rotate electrically via an actuator such as a motor, but preferably, an operating knob 46, which is an operating part for operating the downstream fins 36 (downstream air distribution body 41), is provided on one of the downstream fins 36, specifically the one located in the center in the vertical direction in the illustrated example. The operating knob 46 is located, for example, in the center in the left-right direction of the downstream fins 36. However, the mechanism for operating the downstream fins 36 is not limited to this and any known mechanism may be used.

[0028] In this embodiment, since a downstream fin 36 (downstream air distribution body 41) is provided, a groove 48 is formed in the link 34 for operating the air distribution body 20 to avoid interference with the downstream fin 36. In the illustrated example, the groove 48 is located in the vertical center of the link 34, and the link 34 is claw-shaped above and below the groove 48. Furthermore, in order to ensure that the link 34 maintains its connection with the air distribution body 20 even when the downstream fin 36 (downstream air distribution body 41) is rotated, the link 34 is formed with a connecting portion 50 for connecting the link 34 to the air distribution body 20 so that it can rotate vertically. The connecting portion 50 is formed at the rear end of the link 34. In this embodiment, the connecting portion 50 is connected to a connecting receiving portion 27b formed at the front end of another fin 27 of the air distribution body 20. In this embodiment, the connecting receiving portion 27b is formed as an arc-shaped protrusion (rib) extending in the vertical direction. This is not limited to this configuration; any known configuration for connecting link 34 and air distribution unit 20 may be applied.

[0029] Note that the downstream fins 36 (downstream air distribution body 41) are not an essential component. Furthermore, it is not necessary for multiple downstream fins 36 to constitute the downstream air distribution body 41; they may be connected to each other by links or the like so that they rotate in the same direction.

[0030] Furthermore, a shut valve may be provided inside the case body 3, i.e., in the ventilation passage 5, which rotates relative to the case body 3 to open and close the ventilation passage 5 in accordance with that rotation.

[0031] The wind direction adjustment device 1 controls the wind direction in the left-right direction by grasping the link 34 and rotating each air distribution body 20 in the left-right direction.

[0032] Specifically, the conditioned air introduced from the inlet 6 into the ventilation passage 5 is received by the negative pressure section 13 in the central part of the ventilation passage 5 in the left-right direction, and divided into left and right spaces 30. Negative pressure is generated downstream of the negative pressure section 13, and a portion of the air is drawn into the central part of the ventilation passage 5 in the left-right direction. On both the left and right sides near the side wall 11 of the ventilation passage 5, the conditioned air is bent towards the central part in the left-right direction by the upstream straightening section 17 of the convex section 15 and heads towards the central part of the outlet 7 in the left-right direction. Also, on both the left and right sides near the central part of the ventilation passage 5, the conditioned air passes between one and the other fins 26, 27 of the air distribution body 20 and heads towards the outlet 7. Due to these mutual interactions, the conditioned air is distributed to blow forward from the outlet 7.

[0033] For example, Figure 1 shows the neutral state with each air distribution body 20 and the downstream fin 36 (downstream air distribution body 41) in the neutral position. In this state, the conditioned air that passes between one and the other fins 26, 27 of the air distribution body 20 is directed straight forward towards the outlet 7. Therefore, the conditioned air blows out from the outlet 7 in a nearly straight line forward.

[0034] Figure 2 shows the state in which each air distribution body 20 is rotated toward the central part in the left-right direction. In this state, the extension portions 27a of the other fins 27 of each air distribution body 20 move away from the negative pressure section 13 in the left-right direction, increasing the width of each space 30. As a result, the negative pressure downstream of the negative pressure section 13 becomes relatively smaller, and the amount of conditioned air flowing between one fin 26 and the other fins 27 on the side closer to the negative pressure section 13 in each air distribution body 20 decreases relatively. Therefore, the amount of conditioned air that passes between one and the other fins 26 and 27 of each air distribution body 20 and is directed toward the central part in the left-right direction of the outlet 7 decreases relatively on both the left and right sides near the central part of the ventilation passage 5. Consequently, the directional component of the conditioned air bent by each convex portion 15 becomes dominant over the directional component of the conditioned air distributed by each air distribution body 20, and the conditioned air concentrates toward the central part in the left-right direction from the outlet 7, colliding with each other and then diffusing vertically before being blown out.

[0035] Figure 3 shows the state in which each air distribution body 20 is rotated to the opposite side of the central part in the left-right direction. In this state, the width of each space 30 decreases as the extensions 27a of the other fins 27 of each air distribution body 20 approach the negative pressure section 13 in the left-right direction. As a result, the negative pressure downstream of the negative pressure section 13 becomes relatively larger, and the amount of conditioned air flowing between one fin 26 and the other fins 27 on the side closer to the negative pressure section 13 in each air distribution body 20 increases relatively. Therefore, the amount of conditioned air flowing inclined toward the central part in the left-right direction of the outlet 7 through one and the other fins 26 and 27 of each air distribution body 20 increases relatively. Consequently, the directional component of the conditioned air distributed by each air distribution body 20 becomes dominant over the directional component of the conditioned air bent by each convex part 15, and the conditioned air is diffused and blown out from the outlet 7 forward, away from the central part in the left-right direction.

[0036] Figure 4 shows each air distribution body 20 rotated by the same or approximately the same angle to one side in the left-right direction, for example, to the right. In this state, the extensions 27a of the other fins 27 of the right air distribution body 20 move closer to the negative pressure section 13 in the left-right direction, reducing the width of the space 30 on the right side. As a result, the negative pressure downstream of the negative pressure section 13 becomes relatively larger. On the other hand, the extensions 27a of the other fins 27 of the left air distribution body 20 move further away from the negative pressure section 13 in the left-right direction, increasing the width of the space 30 on the right side. As a result, the negative pressure downstream of the negative pressure section 13 becomes relatively smaller. In other words, in the ventilation passage 5, there is a difference in ventilation resistance between the area of ​​the right air distribution body 20 including the space 30 on the right side and the area of ​​the left air distribution body 20 including the space 30 on the left side. Therefore, in the right-side air distribution body 20, the amount of conditioned air flowing between one fin 26 on the side closer to the negative pressure section 13 and the other fins 27 increases relatively, while in the left-side air distribution body 20, the amount of conditioned air flowing between one fin 26 on the side closer to the negative pressure section 13 and the other fins 27 decreases relatively. As a result, the directional component of the conditioned air distributed to the right by the right-side air distribution body 20 becomes dominant over the directional component of the conditioned air bent to the left by the right-side convex portion 15. Furthermore, the directional component of the conditioned air distributed to the right by the left-side air distribution body 20 interferes with the directional component of the conditioned air bent to the right by the left-side convex portion 15, causing the conditioned air to blow out from the outlet 7 forward as a curved indirect airflow that is less likely to directly hit the user (it curves before hitting the user and passes around them).

[0037] In addition, if only one of the air distribution units 20 is rotated toward the central part in the left-right direction, the direction of air conditioning airflow will be tilted according to the rotation angle, and if only one of the air distribution units 20 is rotated toward the opposite side from the central part in the left-right direction, the air conditioning air will diffuse in the direction of rotation according to the rotation angle.

[0038] Examples of wind direction analysis results from the examples in Figures 1 to 4 are shown in Figures 8(a) to 8(d). In Figure 8, brighter indicators indicate higher pressure.

[0039] Furthermore, the wind direction in the vertical direction is controlled by the wind direction adjustment device 1 by grasping the operating knob 46 and rotating the downstream fin 36 (downstream air distribution body 41) in the vertical direction.

[0040] Therefore, by further combining the downstream fins 36, the wind direction adjustment device 1 can direct airflow in any direction.

[0041] Thus, according to one embodiment, the ventilation passage 5 includes two sets of air distribution bodies 20 that can rotate independently of each other, a negative pressure portion 13 set in the ventilation passage 5 upstream of the rotation axis 22 of the air distribution bodies 20 in the ventilation direction and between the air distribution bodies 20 in the left-right direction, and a convex portion 15 that protrudes toward the downstream side in the ventilation direction toward the top portion 16 located downstream of the rotation axis 22 in the ventilation direction, narrowing the ventilation passage 5 in the left-right direction, and the air distribution bodies 20 are arranged such that the extension portions 27a of the other fins 27 which are aligned in the left-right direction with respect to one fin 26 in the ventilation direction The extension is made to extend upstream, and the tip of the extension portion 27a is made to protrude upstream in the ventilation direction from the rotation axis 22, so that the width of the space portion 30 formed in the ventilation passage 5 between the extension portion 27a and the negative pressure portion 13 increases or decreases according to the rotation angle of the air distribution body 20. As a result, the independent rotation of the air distribution bodies 20, 20 and the resulting changes in the width of the space portions 30, 30 in the left-right direction, the ventilation resistance caused by the difference in width, and the interaction between the negative pressure portion 13 and the protrusion portion 15 make it possible to deliver air with various properties as described above.

[0042] In particular, by rotating each air distribution body 20 to the opposite side of the central part in the left-right direction, as shown in Figure 3, it becomes possible to adjust the wind direction in the left-right diffused wind, which was difficult with conventional wind direction adjustment devices.

[0043] Furthermore, by forming the negative pressure section 13 as a columnar shape extending vertically within the ventilation passage 5, the entire negative pressure section 13 can receive the conditioned air passing through the ventilation passage 5, thereby reliably generating negative pressure on the downstream side.

[0044] Furthermore, by placing the above-mentioned wind direction adjustment device 1 in the vehicle cabin, it is possible to provide wind that is less likely to directly hit the occupants in a location close to them, thereby improving the comfort of the vehicle cabin space and contributing to the further spread of autonomous driving.

[0045] In one embodiment, the wind direction adjustment device 1 is not limited to those for automobiles, but may be used for any other purpose. [Industrial applicability]

[0046] The present invention can be suitably used, for example, as an airflow direction adjustment device for the air conditioning system of an automobile. [Explanation of Symbols]

[0047] 1 Wind direction adjustment device 3 Case Body 5. Ventilation channel 13. Negative pressure section 15 Convex part 16 Top 20 Air distribution body 22 Rotation axis 26 First Fin 27 Other Fins 27a Extension 30 Space section

Claims

1. A case body that partitions the ventilation passage inside, Two sets of air distribution bodies are arranged side by side in a second direction intersecting the ventilation direction and the ventilation path, and each set of air distribution bodies has a pivot axis in a first direction intersecting the ventilation direction and the first direction, and is rotatable independently of each other. A negative pressure section is set in the ventilation passage on the upstream side in the ventilation direction from the rotation axis of the air distribution body and at a position between the air distribution bodies in the second direction, and generates negative pressure on the downstream side in the ventilation direction, It comprises a convex portion that protrudes toward the downstream side in the ventilation direction toward the second direction toward the top of the pivot axis located downstream in the ventilation direction, The air distribution body has, in the second direction, at least one fin and at least one other fin having an extension that extends upstream of the first fin in the ventilation direction, The extension portion has its tip located upstream of the rotation axis in the ventilation direction, and forms a space within the ventilation passage between it and the negative pressure portion, the width of which increases or decreases in the second direction according to the rotation angle of the air distribution body. A wind direction adjustment device characterized by the following features.

2. The negative pressure section is formed in a columnar shape extending in the first direction within the ventilation passage. The wind direction adjustment device according to claim 1, characterized in that it is a wind direction adjustment device.

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