Airflow control apparatus, airflow control system, and airflow control method

Abstract

An air flow control apparatus according to an embodiment of the present technology includes a first frame, a second frame, and a rectifying plate. The first frame is positioned about a center of rotation and includes a through hole. The second frame is located on an outer peripheral side with respect to the first frame about the rotation center. The rectifying plate is flexible, has one end fixed to the rotation center and the other end fixed to the second frame, and penetrates through the through hole. And a deflection amount of a portion thereof between the through hole and the rotation center varies according to a length of the portion due to a change in relative rotation of the first frame and the second frame about the rotation center.

Description

Technical Field

[0001] The present technology relates to an airflow control device for generating airflow, an airflow control system and an airflow control method. Background Art

[0002] In order to enhance the realism of audio-visual content, airflow can be used. Generally, airflow is generated by an airflow generator using rotating blades or a compressor, and some airflow generators can change the degree of diffusion or convergence of the airflow. Changing the degree of diffusion or convergence of the airflow can control the range of the airflow. If the controllability is high, it can be said that the spatial resolution of the airflow is very high. For example, Patent Documents 1 to 3 disclose an airflow generator, each of which includes a rotating blade and can change the degree of diffusion or convergence of the airflow.

[0003] Patent document 1 discloses a blower including an axial flow fan and a straightening blade, and capable of changing the degree of diffusion or convergence of airflow by changing the position of the straightening blade. In addition, patent document 2 discloses a blower including an axial flow fan and a straightening blade, and capable of changing the degree of diffusion or convergence of airflow by changing the angle of the straightening blade. In addition, patent document 3 discloses an electric fan including a fan and a front guard plate, and capable of changing the degree of diffusion or convergence of airflow by removing the front guard plate and turning it from the inside out for connection.

[0004] Prior art literature

[0005] Patent Literature

[0006] Patent Document 1: Japanese Patent Application Laid-Open No. 2016-070110

[0007] Patent Document 2: Japanese Patent Application Laid-Open No. 2016-151173

[0008] Patent Document 3: Japanese Patent Application Laid-Open No. 2015-042868 Summary of the invention

[0009] Technical Problems to be Solved by the Invention

[0010] However, the configurations described in Patent Documents 1 to 3 do not provide a sufficient range of control over the degree of diffusion or convergence of the airflow, and the spatial resolution of the airflow is limited.

[0011] In view of the above situation, an object of the present technology is to provide an airflow control device, an airflow control system, and an airflow control method that can achieve high spatial resolution of airflow.

[0012] Means of solving the problem

[0013] In order to achieve the above-mentioned object, an airflow control device according to an embodiment of the present technology includes a first frame, a second frame, and a rectifying plate.

[0014] The first frame is positioned around a rotation center and includes a through hole.

[0015] The second frame is located on an outer peripheral side relative to the first frame about the rotation center.

[0016] The rectifying plate is flexible, one end of which is fixed to the rotation center and the other end of which is fixed to the second frame, passes through the through hole, and the amount of transformation of a portion of the rectifying plate between the through hole and the rotation center changes according to the length of the portion due to the relative rotation of the first frame and the second frame around the rotation center.

[0017] The first frame may have a cylindrical shape centered at the rotation center, and the second frame may have a cylindrical shape centered at the rotation center and have an inner diameter greater than an outer diameter of the first frame.

[0018] The through hole may have a slit shape having a longitudinal direction parallel to the rotation center, and the rectifying plate may be parallel to the rotation center.

[0019] The through hole may have a slit shape with one direction as the longitudinal direction, and the longitudinal direction may change between a direction parallel to the rotation center and a direction inclined relative to the direction parallel to the rotation center according to the relative rotation, and the rectifying plate may change between a state parallel to the rotation center and a state inclined relative to the rotation center according to the relative rotation.

[0020] The airflow control device may further include a fan capable of changing a pitch angle of a rotating blade and delivering the airflow to the fairing.

[0021] The fan may include a rotational drive source, a rotational shaft, a pitch drive source, and a pitch angle changing mechanism, wherein the rotational shaft connects the rotating blades and the rotational drive source and is rotated by the rotational drive source to rotate the rotating blades, and the pitch angle changing mechanism transmits the force of the pitch drive source in a direction separate from the rotation of the rotational shaft and parallel to the axial direction of the rotational shaft, and changes the pitch angle of the rotating blades.

[0022] The pitch angle changing mechanism may include a handle portion, the handle portion changing the pitch angle of the rotary blade by rotation, and a sliding shaft, the sliding shaft sliding in a direction parallel to the rotary shaft by the drive of the pitch driving source, thereby rotating the handle portion.

[0023] The airflow control device may further include a nozzle capable of changing a nozzle diameter, into which the airflow having passed through the rectifying plate flows.

[0024] The airflow control device may further include a fan capable of changing a pitch angle of a rotary blade and delivering the airflow to the fairing; and a nozzle capable of changing a nozzle diameter into which the airflow having passed through the fairing flows.

[0025] In order to achieve the above-mentioned object, an airflow control system according to an embodiment of the present technology includes an airflow control device and a controller.

[0026] The airflow control device includes a first frame, a second frame, and a rectifying plate, the first frame being positioned around a rotation center and including a through hole, the second frame being located on the outer peripheral side relative to the first frame around the rotation center, the rectifying plate being flexible, one end of which is fixed to the rotation center, the other end of which is fixed to the second frame, passing through the through hole, and the deflection amount of the rectifying plate between the through hole and the rotation center changes according to the length of the portion due to the relative rotation of the first frame and the second frame around the rotation center.

[0027] The controller controls the rectifying plate to define a relative rotation angle of the first frame and the second frame about the rotation center.

[0028] The airflow control device may further include a nozzle capable of changing a nozzle diameter, the airflow having passed through the rectifying plate flowing into the nozzle, and the controller may further control the nozzle to define the nozzle diameter.

[0029] The controller may change the degree of divergence and convergence of the airflow delivered from the airflow control device by controlling the rectifying plate and the nozzle.

[0030] The controller may control the rectifying plate and the nozzle to present an airflow simulated in the space in the virtual space to the user.

[0031] The airflow control device may further include a fan capable of changing a pitch angle of a rotating blade and delivering airflow to the fairing, and the controller may further control the fan to define the pitch angle.

[0032] The controller may change the degree of diffusion and convergence and the flow rate of the airflow delivered from the airflow control device by controlling the rectifying plate and the fan.

[0033] The controller may control the rectifying plate and the fan to present an airflow simulated in the space in the virtual space to the user.

[0034] The airflow control device may further include a nozzle and a fan, wherein the nozzle is capable of changing the nozzle diameter, the airflow having flowed through the straightening plate flows into the nozzle, the fan is capable of changing the pitch angle of the rotating blades and delivering the airflow to the straightening plate, and the controller may change the degree of diffusion and convergence and the flow rate of the airflow delivered from the airflow control device by controlling the straightening plate, the nozzle and the fan.

[0035] The controller may control the rectifying plate, the nozzle, and the fan to present an airflow simulated in the space in the virtual space to a user.

[0036] In order to achieve the above-mentioned purpose, the airflow control method according to the embodiment of the present technology includes: controlling the rectifying plate of the airflow control device, and defining the relative rotation angle of the first frame and the second frame around the rotation center, the airflow control device includes the first frame, the second frame and the rectifying plate, the first frame is positioned around the rotation center and includes a through hole, the second frame is located on the outer peripheral side relative to the first frame around the rotation center, the rectifying plate is flexible, one end of which is fixed to the rotation center, and the other end is fixed to the second frame, passing through the through hole, and the deflection amount of a part of the rectifying plate between the through hole and the rotation center changes according to the length of the part due to the change in the relative rotation of the first frame and the second frame around the rotation center.

[0037] In order to achieve the above-mentioned object, an airflow control method according to an embodiment of the present technology includes controlling an airflow control device that generates an airflow based on a flow rate and a reach of the airflow presented to a user. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 is a perspective view of an airflow control device according to an embodiment of the present technology.

[0039] Figure 2 is an exploded cross-sectional view of an airflow control device.

[0040] Figure 3 is an exploded perspective view of a rectifying plate unit included in the airflow control device.

[0041] Figure 4 It is a plan view of the rectifier plate unit.

[0042] Figure 5 1 is an exploded perspective view of a first frame and a second frame of a rectifying plate unit.

[0043] Figure 6 It is a plan view of the first frame and the second frame.

[0044] Figure 7is a cross-sectional view of a portion of the first frame.

[0045] Figure 8 is a cross-sectional view of a portion of the second frame.

[0046] Fig. 9 is a schematic diagram illustrating relative rotation of the first frame and the second frame.

[0047] Fig.10 It is a plan view of a rectifier plate, a first frame and a second frame of a rectifier plate unit.

[0048] Fig.11 It is a cross-sectional view of a portion of a rectifying plate, a first frame, and a second frame.

[0049] Fig.12 is a schematic diagram showing the rotation of the second frame and the change in the deflection amount of the rectifying plate.

[0050] Fig.13 is a schematic diagram showing the rotation of the second frame and the change in the deflection amount of the rectifying plate.

[0051] Fig.14 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0052] Fig.15 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0053] Fig.16 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0054] Fig.17 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0055] Fig.18 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0056] Fig.19 Schematic diagram showing the change in the deflection amount of the rectifier plate.

[0057] Fig. 20 is a schematic diagram showing nozzle diameters of nozzles included in the airflow control device.

[0058] Fig.21 is a schematic diagram showing nozzle diameters of nozzles included in the airflow control device.

[0059] Fig. 22 is a schematic diagram showing airflow delivered from an airflow control device.

[0060] Fig.23 is a schematic diagram showing airflow delivered from an airflow control device.

[0061] Fig.24 is a perspective view of a fan included in an airflow control device.

[0062] Fig.25 This is a cross-sectional view of the fan.

[0063] Fig.26 This is a plan view of the fan.

[0064] Fig. 27 This is a plan view of the fan.

[0065] Fig.28 is a perspective view of the rotating blades and handle included in the fan.

[0066] Fig.29 is a cross-sectional view of a sliding shaft and a handle included in the fan.

[0067] Fig.30 is a schematic diagram showing the operation of a pitch angle variation mechanism included in a fan.

[0068] Fig.31 is a schematic diagram showing the operation of a pitch angle variation mechanism included in a fan.

[0069] Fig.32 is a schematic diagram showing changes in the pitch angle of the rotary blades.

[0070] Fig.33 is a schematic diagram showing changes in the pitch angle of the rotary blades.

[0071] Fig.34 : is a schematic diagram showing the operation of the rectifying plate unit according to the modification example of the present technology.

[0072] Fig.35 is a schematic diagram showing the operation of the rectifying plate unit.

[0073] Fig.36 is a schematic diagram of an airflow control system according to an embodiment of the present technology.

[0074] Fig.37 is a schematic diagram illustrating the operation of the airflow control system.

[0075] Fig.38 is a schematic diagram illustrating the operation of the airflow control system.

[0076] Fig.39 is a perspective view of a fan included in an airflow control device having another configuration.

[0077] Fig.40 is a perspective view of a fan included in an airflow control device having another configuration.

[0078] Fig.41 It is a perspective view of the vicinity of a rotation conversion portion (sliding screw method) of a fan having another configuration included in the airflow control device.

[0079] Fig.42 It is a perspective view of the vicinity of a rotation conversion portion (cam lever method) of a fan having another configuration included in the airflow control device.

[0080] Fig.43 is a block diagram showing a hardware configuration of a controller included in the airflow control system. DETAILED DESCRIPTION

[0081]

Configuration of air flow control equipment

[0082] An airflow control device according to an embodiment of the present technology will be described. Figure 1 is a perspective view of an airflow control device 100 according to this embodiment, Figure 2 1 is an exploded perspective view of the airflow control device. As shown in the figure, the airflow control device 100 includes a fan 110, a rectifying plate unit 120 and a nozzle 130.

[0083] The fan 110 delivers the airflow toward the rectifying plate unit 120. Figure 2 As shown, the fan 110 includes a rotating blade 111 and a rotating driving source 112, and the rotating blade 111 is rotated by the rotating driving source 112 to generate an airflow. For example, the gas that becomes the airflow is air, but it can be other gases. The fan 110 can change the pitch angle of the rotating blade 111, and its details will be described later.

[0084] The rectifying plate unit 120 rectifies the airflow delivered from the fan 110 . Figure 3 is an exploded perspective view of the rectifier plate unit 120, Figure 4 1 is a plan view of the rectifying plate unit 120 . Figure 5 is an exploded perspective view of a partial configuration of the rectifier plate unit 120, Figure 6 1 is a plan view of a partial configuration of the rectifier plate unit 120. Figure 3 and Figure 4 As shown, the rectifying plate unit 120 includes a first frame 121 , a second frame 122 and rectifying plates 123 . Figures 3 to 6 The rotation center P is shown, and the extending direction of the rotation center P is defined as the X direction in each figure.

[0085] like Figure 6 As shown, the first frame 121 is located on the inner circumference side of the second frame 122. The first frame 121 has a cylindrical shape centered at the rotation center P. The first frame 121 may have a Figure 5 The cylindrical shape shown in the figure, but it can also have other cylindrical shapes, such as square tube shape. Figure 6 As shown, the surface of the first frame 121 located on one side of the rotation center P is the inner peripheral surface 121a, and the surface opposite to the inner peripheral surface 121a is the outer peripheral surface 121b. The inner peripheral surface 121a and the outer peripheral surface 121b are both parallel to the extension direction (X direction) of the rotation center P. The first frame 121 includes a supporting portion 121c connected to the inner peripheral surface 121a.

[0086] like Figure 5 As shown, the first frame 121 includes a plurality of through holes 151. The through holes 151 have a slit shape having a longitudinal direction (X direction) parallel to the rotation center P. For example, the number of the through holes 151 is not particularly limited, but may be eight. Figure 7 1 is a cross-sectional view of the vicinity of the through hole 151 of the first frame 121. As shown in the figure, both the inner peripheral surface 121a side and the outer peripheral surface 121b side of the through hole 151 are chamfered.

[0087] like Figure 6 As shown, the second frame 122 is located on the outer peripheral side of the first frame 121. The second frame 122 has a cylindrical shape centered at the rotation center P. The second frame 122 may have a cylindrical shape as shown in FIG. Figure 5 The second frame 122 is cylindrical as shown, but may also have other cylindrical shapes, such as a square tube shape. The inner diameter of the second frame 122 is greater than the outer diameter of the first frame 121, and the second frame 122 is farther away from the rotation center P than the first frame 121. Figure 6 As shown, the surface of the second frame 122 located on the side of the rotation center P is an inner peripheral surface 122a, and the surface opposite to the inner peripheral surface 122a is an outer peripheral surface 122b. The inner peripheral surface 122a faces the outer peripheral surface 121b of the first frame 121 at a predetermined interval.

[0088] like Figure 5 As shown, the second frame 122 includes a plurality of through holes 152 . The through holes 152 have a slit shape having a longitudinal direction in a direction (X direction) parallel to the rotation center P. The number of the through holes 152 is the same as the number of the through holes 151 . Figure 8 1 is a cross-sectional view of the vicinity of the through hole 152 of the second frame 122. Figure 8 As shown, the inner peripheral surface 122a side of the through hole 152 is chamfered.

[0089] The first frame 121 and the second frame 122 rotate relative to each other about the rotation center P. Fig. 9 1 is a schematic diagram showing the rotation of the first frame 121 and the second frame 122. The first frame 121 may be Fig. 9 The second frame 122 may rotate around the rotation center P as shown by the arrow A1, while the second frame 122 may not rotate. Fig. 9As shown by arrow A2, the first frame 122 rotates around the rotation center P, while the first frame 122 may not rotate. Fig. 9 As shown by arrows A1 and A2, the first frame 121 and the second frame 122 can both rotate around the rotation center P.

[0090] The rectifying plate 123 is flexible and attached to the first frame 121 and the second frame 122 . Fig.10 is a plan view showing a rectifying plate 123, a first frame 121 and a second frame 122, Fig.11 151 is a cross-sectional view showing the vicinity of the through hole 151. As shown in the figure, the rectifying plate 123 passes through the through hole 151 of the first frame 121 from the inner peripheral surface 121a side to the outer peripheral surface 121b side. The rectifying plate 123 is not fixed to the first frame 121 and can slide in the through hole 151.

[0091] like Fig.10 As shown, one end 123a of the rectifying plate 123 is fixed to the rotation center P. Specifically, in the Figure 4 As shown, one end 123a of the rectifying plate 123 is connected to the other rectifying plates 123 at the rotation center P, thereby being fixed to the rotation center P. Note that a physical shaft may be provided at the rotation center P, and one end 123a may be connected to the shaft to be fixed to the rotation center P.

[0092] In addition, the other end 123b of the rectifying plate 123 is fixed to the second frame 122. Specifically, the rectifying plate 123 further passes through the through hole 152 of the second frame 122, and the other end 123b is connected to the outer peripheral surface 122b. In addition, the rectifying plate 123 may not pass through the through hole 152, and the other end 123b may be connected to the inner peripheral surface 122a. In this case, the through hole 152 may not be provided.

[0093] As described above, the rotation center P and the through hole 151 extend in a direction (X direction) parallel to the rotation center P, and therefore, the rectifying plate 123 is also parallel to the same direction (X direction). Fig.10 One rectifying plate 123 is shown, and the other rectifying plates 123 each pass through a corresponding through hole 151 and are fixed to the rotation center P and the second frame 122 (see FIG. 1 ) at both ends thereof in a similar manner. Figure 4 ).

[0094] The deformation of the rectifying plate 123 will be described. Fig.12 and Fig.13 15 and 15 are schematic diagrams showing deformation of the rectifying plate 123. In those drawings, a portion of the rectifying plate 123 between the through hole 151 and the rotation center P is referred to as a portion 123c. In addition, the length of the portion 123c in the drawings is referred to as a length L.

[0095] exist Fig.12In the state shown in FIG. 1 , when the first frame 121 is fixed and the second frame 122 rotates around the rotation center P as shown by the arrow, the other end 123b moves away from the through hole 151 through which the rectifying plate 123 passes, and the rectifying plate 123 is gradually pulled out of the through hole 151. Therefore, the length L of the portion 123c gradually becomes shorter and as shown in FIG. Fig.13 On the contrary, Fig.13 In the state shown, when the first frame 121 is fixed and the second frame 122 rotates around the rotation center P as shown by the arrow, the other end 123b approaches the through hole 151 through which the rectifying plate 123 passes, and the rectifying plate 123 is gradually inserted into the through hole 151. Therefore, the length L of the portion 123c gradually becomes longer and as shown in FIG. Fig.12 It becomes a curve as shown.

[0096] Since the linear distance between the through hole 151 and the rotation center P is always constant, the deflection amount of the rectifying plate 123 changes according to the length L of the portion 123c. Figures 14 to 19 is a schematic diagram showing the change in the deflection amount of each rectifying plate 123 due to the rotation of the second frame 122. Figures 14 to 19 As the number of the figure becomes larger, the rotation angle of the second frame 122 becomes larger, and the deflection amount of the rectifying plate 123 also becomes larger. It should be noted that the case where only the second frame 122 is rotated has been described here, but it is sufficient to rotate the first frame 121 and the second frame 122 relatively around the rotation center P. Rotating only the first frame 121 or rotating both the first frame 121 and the second frame 122 can also change the deflection amount of the rectifying plate 123.

[0097] As an effect of the deformation of the rectifying plate 123, when the length L of the portion 123c and the deflection amount of the rectifying plate 123 become larger, that is, when the rectifying plate 123 is bent, the airflow flowing through the rectifying plate 123 converges. On the other hand, when the length L of the portion 123c becomes shorter and the deflection amount of the rectifying plate 123 becomes smaller, that is, when the rectifying plate 123 becomes straight, the airflow flowing through the rectifying plate 123 diffuses. Therefore, in the rectifying plate unit 120, the degree of convergence and diffusion of the airflow from the fan 110 can be controlled by the relative rotation of the first frame 121 and the second frame 122.

[0098] The nozzle 130 controls the degree of convergence and divergence of the airflow delivered from the fan 110 and flowing through the rectifying plate unit 120 . Fig. 20 and Fig.21 1 is a perspective view of the nozzle 130. As shown in the figure, the opening diameter of the nozzle 130 on the side opposite to the rectifying plate unit 120 is referred to as the nozzle diameter D. The nozzle 130 is composed of a plurality of plates 131 assembled together. Changing the angle of the plate 131 can be as follows: Fig. 20 and Fig.21The nozzle diameter D is changed as shown. It should be noted that the specific structure of the nozzle 130 is not particularly limited as long as the nozzle diameter D can be changed.

[0099]

Effect of airflow control equipment

[0100] The effect of the airflow control device will be described. Fig. 22 and Fig.23 1 is a schematic diagram showing the effect of the airflow control device 100. In the airflow control device 100, when the fan 110 is driven, the airflow generated by the fan 110 flows through the rectifying plate unit 120 and the nozzle 130 and is delivered from the airflow control device 100. The airflow delivered from the airflow control device 100 is Fig. 22 and Fig.23 The air flow F is shown in FIG.

[0101] As described above, the airflow control device 100 can be operated by relative rotation of the first frame 121 and the second frame 122 in the rectifying plate unit 120 (see Figures 14 to 19 ) controls the convergence and diffusion degree of the airflow. Therefore, in the airflow control device 100, controlling the rectifying plate unit 120 can increase the control range of the convergence and diffusion degree of the airflow F and enhance the spatial resolution of the airflow F.

[0102] In addition, the airflow control device 100 can also control the convergence and diffusion of the airflow F by changing the nozzle diameter D in the nozzle 130 (see Fig. 20 and Fig.21 ). Therefore, in the airflow control device 100, controlling the rectifying plate unit 120 and the nozzle 130 can further increase the control range of the convergence and diffusion degree of the airflow F, and further enhance the spatial resolution of the airflow F, such as Fig. 22 and Fig.23 shown.

[0103]

About fan configuration

[0104] The fan 110 may vary the pitch angle. Fig.24 is a perspective view of the fan 110, Fig.25 is a cross-sectional view of the fan 110 . Fig.26 and Fig. 27 1 is a plan view of the fan 110. As shown in the figure, the fan 110 includes a rotary blade 111, a rotary drive source 112, a rotary shaft 113, a pitch drive source 114, and a pitch angle changing mechanism 115.

[0105] like Fig. 27As shown, four rotating blades 111 are provided. Each of the rotating blades 111 is connected to a rotating shaft 113 and rotated by the rotating shaft 113. In addition, the pitch angle of each of the rotating blades 111 is changed by a pitch angle changing mechanism 115. The shape and number of the rotating blades 111 are not particularly limited. The rotating drive source 112 generates rotating power. For the rotating drive source 112, a general motor can be used. The rotating shaft 113 is an axis that connects the rotating blades 111 and the rotating drive source 112 with the X direction as the longitudinal direction. The rotating shaft 113 is rotated by the rotating drive source 112 to rotate the rotating blades 111.

[0106] like Fig.26 As shown, two pitch drive sources 114 are provided to generate rotational power for changing the pitch angle of the rotary blades 111. For the pitch drive source 114, a servo motor can be used. The pitch angle changing mechanism 115 transmits the power of the pitch drive source 114 in a direction separate from the rotation of the rotary shaft 113 and parallel to the axial direction (X direction) of the rotary shaft 113, and changes the pitch angle of the rotary blades 111.

[0107] Specifically, the pitch angle variation mechanism 115 includes an arm 116, a movable portion 117, a sliding shaft 118, and a handle 119. In the arm 116, one end is fixed to the output shaft of the pitch drive source 114, and the other end is rotatably connected to the movable portion 117. Therefore, the arm 116 moves the movable portion 117 along the axial direction (X direction) of the rotation shaft 113 by the rotation of the pitch drive source 114. The movable portion 117 is connected to the arm 116 and the sliding shaft 118 to move along the axial direction (X direction) of the rotation shaft 113 through the arm 116, and to slide the sliding shaft 118 in the same direction (X direction).

[0108] The sliding shaft 118 rotates together with the rotating shaft 113 and slides in the axial direction (X direction) of the rotating shaft 113 through the movable portion 117. A bearing is provided between the movable portion 117 and the sliding shaft 118 to separate the rotation of the sliding shaft 118 and its movement through the movable portion 117. Each rotating blade 111 is provided with a handle 119.

[0109] Fig.28 11 is a perspective view of the handle 119 and the rotating blade 111 . As shown in the figure, the handle 119 and the rotating blade 111 are connected to rotate around the rotation center C. The protrusion 119 a is provided at a position away from the rotation center C of the handle 119 . Fig.29 is a cross-sectional view of the handle 119 and the sliding shaft 118. Fig.29As shown, the sliding shaft 118 has the same number of recesses 118a as the handles 119, and the protrusions 119a are inserted into the corresponding recesses 118a. Therefore, when the sliding shaft 118 is driven by the pitch drive source 114 to slide, each handle 119 and the rotating blade 111 rotate around the rotation center C, and the pitch angle of each rotating blade 111 changes.

[0110] Figure 30 to Figure 33 is a schematic diagram showing changes in the pitch angle of the fan 110 . Fig.33 The distance between one end 113a of the rotating shaft 113 and the movable portion 117 is shown as the distance G1 to G3, the pitch angle A, and the airflow R. Fig.30 In the state shown in (a), the movable part 117 is located at a predetermined position, and the distance between one end of the rotating shaft 113 and the movable part 117 is Fig.33 (a) shows the distance G1. At this time, the rotating blade 111 has Fig.31 (a) Fig.32 (a) and Fig.33 In the case of the pitch angle A of 0° shown in (a), the blade surface is perpendicular to the axial direction (X direction) of the rotary shaft 113. In this state, even if the rotary blade 111 rotates, no airflow is generated.

[0111] like Fig.30 As shown in (b), when the pitch drive source 114 is driven to rotate the arm 116 as shown by the dotted arrow, the movable part 117 and the sliding shaft 118 are as shown in FIG. Fig.30 (b) and Fig.31 As indicated by the solid arrow in (b), the rotation drive source 112 is moved away from the rotation drive source 112 along the axial direction (X direction) of the rotation shaft 113. Fig.33 As shown in (b), the distance G2 between the one end 113 a of the rotating shaft 113 and the movable portion 117 is greater than the distance G1 , and the difference is, for example, 3 mm.

[0112] This movement of the sliding shaft 118 causes the handle 119 to rotate, rotating the blades 111 as shown in FIG. Fig.31 (b) as indicated by the dotted arrow. Fig.32 (b) and Fig.33 As shown in (b), the pitch angle A becomes positive, and the blade surface of the rotating blade 111 is inclined relative to the axial direction (X direction) of the rotating shaft 113. In this state, as shown in Fig.33 As shown in (b), when the rotary blades 111 rotate, an airflow R is generated which is delivered from the fan 110. For example, the pitch angle A is +65°.

[0113] Then, if Fig.30 As shown in (c), when the pitch drive source 114 is driven to rotate the arm 116 as shown by the dotted arrow, the movable part 117 and the sliding shaft 118 are as shown in FIG. Fig.30 (c) and Fig.31 As indicated by the solid arrow in (c), the rotating shaft 113 moves in the axial direction (X direction) toward the rotation drive source 112. Fig.33 As shown in (c), the distance G3 between the one end 113a of the rotating shaft 113 and the movable portion 117 is smaller than the distance G1, and the difference is, for example, 3 mm.

[0114] This movement of the sliding shaft 118 causes the handle 119 to rotate, rotating the blades 111 as shown in FIG. Fig.31 (c) as indicated by the dotted arrow. Fig.32 (c) and Fig.33 As shown in (c), the pitch angle A becomes negative, and the blade surface of the rotating blade 111 is inclined relative to the axial direction (X direction) of the rotating shaft 113. In this state, Fig.33 As shown in (b), when the rotary blades 111 rotate, an airflow R is generated which is sucked into the fan 110. For example, the pitch angle A is -65 degrees.

[0115] The pitch angle changing mechanism 105 has the above-described configuration. Note that the configuration of the pitch angle changing mechanism 105 is not limited to the above-described configuration as long as it transmits the power of the pitch driving source 114 in a direction separate from the rotation of the rotating shaft 113 and parallel to the axial direction (X direction) of the rotating shaft 113 and changes the pitch angle of the rotating blade 111. For example, the pitch angle changing mechanism 105 may be a mechanism using, for example, a feed screw that generates linear motion when rotated.

[0116] As described above, the fan 110 can change the pitch angle of the rotating blades 111 independently of the rotation of the rotating blades 111. This allows the fan 110 to quickly control the flow rate of the airflow (including the presence or absence of airflow). Specifically, when the pitch angle is changed while the rotating blades 111 rotate at a constant speed and the pitch angle is set to 0°, the fan 110 can immediately generate an airflow. In the case of an ordinary fan, when the rotating blades rotate, thereby generating an airflow from a state where the blades stop rotating and no airflow is generated, it is difficult to immediately generate an airflow because the increase in the rotation speed takes time. Similarly, when the flow rate of the airflow is changed, the fan 110 can immediately change the flow rate by changing the pitch angle, but an ordinary fan cannot immediately change the flow rate because it takes time to change the rotation speed.

[0117] As described above, in the airflow control device 100, the control range of the convergence and diffusion degree of the airflow F can be increased by controlling the rectifying plate unit 120 and the nozzle 130 (see Fig. 22 and Fig.23), and enhance the spatial resolution of the airflow F. In addition, by enabling the fan 110 to change the pitch angle, the flow rate of the airflow can be quickly controlled, and the temporal resolution of the airflow F can be enhanced. Therefore, in the airflow control device 100, high resolution in terms of spatial resolution and temporal resolution of the airflow F can be achieved.

[0118] [Revision example]

[0119] The rectifying plate unit 120 may also be configured as follows. Fig.34 1 is a perspective view of the rectifying plate unit 120 according to the modified example. By the relative rotation of the first frame 121 and the second frame 122 around the rotation center P, the rectifying plate 123 can be Fig.34 (a) is parallel to the rotation center P and Fig.34 (b) changes between the states of inclination relative to the rotation center P.

[0120] Fig.35 is a schematic diagram showing the first frame 121 of the rectifying plate unit 120. Fig.35 As shown in (a) and (b), the first frame 121 may include a frame member 121d, a movable member 121e, and a rotation shaft 121f. The movable member 121e is connected to the frame member 121d via the rotation shaft 121f and is Fig.35 (a) The upright position shown and Fig.35 (b) The through hole 151 is provided in the movable member 121e and has a slit shape whose longitudinal direction changes between a direction (X direction) parallel to the rotation center P and a direction inclined with respect to the same direction.

[0121] The rectifier plate 123 is inserted into each through hole 151, and the length L of the portion 123c (see Fig.12 and Fig.13 ) is changed by the relative rotation of the first frame 121 and the second frame 122 around the rotation center P. Therefore, the movable member 121e receives power from the rectifying plate 123 and Fig.35 The angle of the movable member 121e is changed as shown in (a) and (b). Fig.34 As shown in (a) and (b), the straightening plate 123 also tilts as it moves away from the rotation center P. In this configuration, the convergence or diffusion effect of the airflow achieved by the straightening plate 123 can be greater.

[0122]

Configuration of air flow control system

[0123] An airflow control system according to this embodiment will be described. Fig.361 is a schematic diagram showing the configuration of an airflow control system 170 according to the embodiment. As shown in the figure, the airflow control system 170 includes the above-mentioned airflow control device 100 and a controller 180. The controller 180 includes an airflow characteristic determination unit 181, a nozzle controller 182, a rectifying plate controller 183 and a fan controller 184. Each of the components of the controller 180 is a functional component implemented by software and hardware in collaboration.

[0124] The airflow characteristic determination unit 181 determines the characteristics of the airflow to be generated by the airflow control device 100 (hereinafter, referred to as airflow characteristics). The airflow characteristics include the start time of airflow generation, the stop time of airflow generation, flow rate, degree of diffusion and convergence, etc. The airflow characteristic determination unit 181 can obtain audio-visual content from the controller 180 or another information processing device to determine the airflow characteristics read from the audio-visual content or generated based on the details of the content.

[0125] Specifically, the controller 180 may determine the airflow characteristics to present the simulated airflow in the space in the virtual space to the user. In addition, the airflow characteristics determination unit 181 may further determine the airflow characteristics based on information related to the airflow control device 100 (such as the position of the airflow control device 100 and its relative position to the user). Once the airflow characteristics determination unit 181 determines the airflow characteristics, the airflow characteristics determination unit 181 determines the parameters for achieving the airflow characteristics and provides the parameters to the nozzle controller 182, the rectifying plate controller 183 and the fan controller 184.

[0126] The nozzle controller 182 controls the nozzle 130 to define the nozzle diameter D according to the parameters provided by the airflow characteristic determination unit 181 (see Fig. 20 and Fig.21 The rectifying plate controller 183 controls the rectifying plate unit 120 to limit the relative rotation angle of the first frame 121 and the second frame 122 according to the parameters provided by the airflow characteristic determination unit 181. The fan controller 184 limits the operation time, rotation speed and rotation angle of the rotation driving source 112 and the pitch driving source 114 according to the parameters provided by the airflow characteristic determination unit 181.

[0127] The airflow control system 170 has the configuration as described above. The controller 180 can control at least any one of the fan 110, the rectifying plate unit 120 or the nozzle 130 in the airflow control device 100 to change the convergence and diffusion degree of the airflow and its flow rate, thereby allowing the user to present an airflow with desired characteristics. Specifically, the controller 180 can control the airflow control device 100 to present the user with an airflow simulated in space in a virtual space. In addition, the controller 180 can also present the characteristics of the airflow observed at a specific point in the real space to the user in a virtual manner by controlling the airflow control device 100.

[0128] In this way, the controller 180 can control the airflow control device 100 based on the flow rate and reach of the airflow to be presented to the user. As described above, in the airflow control device 100, the spatial resolution and temporal resolution of the airflow can be enhanced so that the airflow control system 170 can present the airflow corresponding to the details of the audio-visual content. It should be noted that the controller 180 is not limited to a controller including all of the airflow feature determination unit 181, the nozzle controller 182, the rectifying plate controller 183, and the fan controller 184, but only needs to include at least the rectifying plate controller 183.

[0129] [Specific example of control by airflow control system]

[0130] The controller 180 may control the airflow according to the installation state of the airflow control device 100 . Fig.37 is a schematic diagram showing a control method according to the installation state of the airflow control device 100. As shown in the figure, since the airflow F will diffuse according to the distance between the user T and the airflow control device 100, the controller 180 can determine the convergence and diffusion degree C of the airflow F so that the diffusion range H of the airflow F at the position of the user T is the desired range.

[0131] In addition, considering the distance between the user T and the airflow control device 100 and the arrival time of the airflow, the controller 180 can advance the airflow delivery time of the airflow control device 100 according to the distance to obtain the required presentation time. In addition, if the flow velocity change frequency of the airflow delivered by the airflow control device 100 exceeds a certain level (such as 100 Hz or more), the flow velocity change frequency will decrease as the user T and the airflow control device 100 are further apart from each other, so that a continuous airflow will be felt. Therefore, the controller 180 can control to make the flow velocity change frequency smaller according to the distance between the user T and the airflow control device 100, so as to present the frequency change of the airflow.

[0132] Regarding the method of controlling the flow rate through the airflow control system 170, when the flow rate of the airflow increases, as the pitch angle change speed (pitch angle / second) of the rotating blades 111 becomes larger, the controller 180 over-adjusts the pitch angle change speed (after reaching the target value, the pitch angle change speed far exceeds the target value), thereby preventing the rotation speed of the rotating blades 111 from decreasing.

[0133] In addition, when the airflow is stopped, the controller 180 reverses the pitch angle of the rotary blades 111 to generate an airflow in the opposite direction of the delivered airflow, so that the windless state can be achieved more quickly. In addition, the controller 180 can also rotate the rotary drive source 112 even in the windless state (see Fig.33 (a)), and then change the pitch angle when airflow begins to occur (see Fig.33 (b)), thereby accelerating the realization of the target flow rate. At this time, since the load on the rotary drive source 112 changes with the pitch angle of the rotary blades 111, the flow rate can be kept constant by changing the power input to the rotary drive source 112 according to the rotation speed. For example, the load on the rotary drive source 112 is the lowest in a windless state (see Fig.33 (a)), but the load increases when the pitch angle changes (see Fig.33 (b)), the rotation speed of the rotation drive source 112 can be increased according to the required flow rate.

[0134] In addition, in order to maintain a constant flow rate of the airflow presented to the user even when the convergence range of the airflow changes, the controller 180 can automatically adjust the pitch angle of the rotary blade 111 and the rotation speed of the rotary drive source 112 according to the convergence range. In order to achieve the desired flow rate, the controller 180 can select which of the two parameters (the pitch angle of the rotary blade 111 and the rotation speed of the rotary drive source 112) to increase and which to decrease based on optimizing energy efficiency. In this case, if the flow rate can be increased only by changing the pitch angle without increasing the rotation speed, it is advantageous in terms of energy.

[0135] Regarding the method of controlling the wind direction by the airflow control system 170, in order to give a sense of the wind direction, by changing the pitch angle to switch the suction and blowing of the airflow, the controller 180 can present a sense that the wind direction has changed without moving the fan 110 itself. In addition, the airflow control device 100 itself can also be moved to control the wind direction. In order to make the user feel as if the wind is blowing from the front, the following operation can be repeated: the airflow is delivered while moving the airflow control device 100 from front to back, and the airflow control device 100 is returned from back to front when the airflow is stopped.

[0136] Fig.38 is a schematic diagram showing the positional relationship between the user T and the airflow control device 100. As shown in the figure, the controller 180 sequentially delivers airflow F1, airflow F2, and airflow F3 at different airflow delivery timings at each position while moving the airflow control device 100 left and right, and then repeats this operation to create an illusion (visible effect) that the wind flows from left to right as shown by the arrow W in the figure. In addition, as Fig.38 As shown, when multiple airflow control devices 100 are used, airflow can be delivered from each airflow control device 100 in the order of airflow F1, airflow F2, and airflow F3, so as to present a sense of wind direction using an apparent motion effect. In addition, if the airflow control device 100 is installed on both sides of the user's neck, the wind speed experience can also be improved by controlling the pitch angle on one side of the wind outlet direction and the other side of the wind inlet direction.

[0137] Regarding the method of controlling the temperature by the airflow control system 170, the airflow control device 100 includes a heat source or a cold heat source at the inlet portion, which can present the temperature together with the airflow. In this case, the controller 180 can adjust the flow rate to a degree where the airflow cannot be felt, and only present the temperature. In addition, the airflow control device 100 can also generate airflow in the air inlet direction in a manner where the airflow cannot be felt, thereby only presenting a cool feeling.

[0138]

Application examples of air flow control systems

[0139] An application example of the airflow control system 170 will be described. The airflow control device 100 can be mounted on a neck-hanging device worn on the neck of a user. When a user wearing such a device watches an environmental video showing a flowing river and swaying leaves on a tree, the user imagines that the wind is blowing. In the airflow control system 170, the controller 180 can control the airflow control device 100 to deliver airflow to the user at a set time synchronized with the video.

[0140] In addition, when there is no wind blowing in the video, the rotary blade 111 rotates, and the pitch angle is set to be horizontal relative to the outlet or set to an angle that slightly inhales the airflow, so that the airflow control device 100 does not deliver airflow to the user. When the wind blows in the video, the controller 180 controls the airflow control device 100 to change the pitch angle to the wind outlet direction and deliver airflow to the user. At this time, in order to present the airflow in a large range of the user's body, the controller 180 sets the nozzle diameter of the nozzle 130 to an open state, and sets the rectifier unit 120 to a state that diffuses the airflow.

[0141] The content creator can set the flow rate and diffusion range of the airflow as parameters. The controller 180 can calculate the pitch angle of the rotating blade 111 and the rotation speed of the rotation drive source 112 based on the flow rate, and can calculate the degree of diffusion and convergence through the rectifying plate unit 120 and the nozzle 130 based on the diffusion range. In this case, the degree of diffusion and convergence can be changed according to the distance between the user and the airflow control device 100, and the pitch angle and the rotation speed can be controlled to maintain the target flow rate because the flow rate increases when the airflow converges.

[0142] In addition, the controller 180 can adjust the degree of diffusion and convergence of the airflow according to the sound frequency of the content (low frequency → diffusion / low speed, high frequency → convergence / high speed). The controller 180 can use a sensor to measure the distance between the user and the airflow control device 100. In this case, the flow rate of the airflow delivered by the airflow control device 100 is reversely calculated from the flow rate of the airflow reaching the user. In addition, the airflow control device 100 can be used together with a heat source or a cold heat source provided at the inlet portion to change the temperature of the airflow.

[0143] In addition, when an object passes near a character operated by a user in an action game or the like, the controller 180 can control the airflow control device 100 to present an airflow corresponding to the object. For example, when the object is small and passes by as fast as a bullet, the airflow control device can simply present an airflow that converges to a narrower range, and when a train passes in front of the user, a continuous airflow can be presented in a wider range. In addition, for example, when the character operated by the user runs, the airflow control device 100 can also change the flow rate of the airflow delivered to the user according to the moving speed of the character and present the moving speed.

[0144] In addition, when there is no wind blowing in the game, the controller 180 rotates the rotating blade 111, and the pitch angle is set to be parallel to the outlet or set to an angle that slightly inhales the airflow, so that the airflow control device 100 does not deliver airflow to the user. When the wind blows in the game, the controller 180 briefly changes the pitch angle of the rotating blade 111 to the wind outlet direction, and then immediately changes the pitch angle to the horizontal direction, so that the airflow can be briefly presented. At this time, in order to present the airflow to a small area of ​​the user's body, the controller 180 sets the nozzle 130 to be closed and sets the rectifier unit 120 to a state that diffuses the airflow.

[0145] In addition, the controller 180 may perform the following operations in sequence to present an airflow exceeding the flow rate that can be achieved by the airflow control device 100, or to emphasize the change in the flow rate. If the rate of change of the flow rate is of a certain level or higher, or if the flow rate specified in the content exceeds the flow rate that can be achieved by the airflow control device 100, in order to create the illusion of strong wind, the controller 180 may generate a windless state immediately before the flow rate changes. For example, when the flow rate is specified as 3→10, the controller 180 may equate it to 3→3→0→7→7, and in order to achieve a difference of 7 from 3→10, a windless state may be presented once, and then a flow rate of 7 may be presented.

[0146] In addition, in order to emphatically present a windless state, the controller 180 may control the flow rate to suddenly drop to zero after intentionally presenting a stable, weak airflow. In addition, when the rate of change of the flow rate is at a certain level or higher, in order to emphasize the change, the controller 180 may also intentionally over-adjust the flow rate presented to the user. For example, when the flow rate suddenly changes from 0 to 1, the controller 180 may change the flow rate in the manner of 0→0→2→1→1. The position of the airflow control device 100 worn by the user is not limited to the neck, but may also be a hand or foot. In this case, the controller 180 may present the airflow in response to the movement of the hand or foot. In addition, when the airflow control device 100 is worn on the hand, the controller 180 may also present the movement of attracting or releasing a virtual object in a virtual reality (VR) space by inhaling or exhausting the airflow.

[0147] [Other configurations about the fan]

[0148] Fig.39 and Fig.40 2 is a perspective view of the fan 210. The airflow control device 100 may include the fan 210 instead of the fan 110. Fig.39 and 40 As shown, the fan 210 includes a rotating blade 211 , a rotation driving source 212 , a rotating shaft 213 , a pitch driving source 214 , a fixing portion 215 , and a pitch angle varying mechanism 216 .

[0149] like Fig.40 As shown, six rotary blades 211 are provided. Each of the rotary blades 211 is connected to a rotary shaft 213 and rotated by the rotary shaft 213. In addition, the pitch angle of each of the rotary blades 211 is changed by a pitch angle changing mechanism 216. The shape and number of the rotary blades 211 are not particularly limited.

[0150] The rotation drive source 212 generates rotational power. For the rotation drive source 212, a direct current (DC) motor may be used, but other types of motors may also be used. The rotation shaft 213 is an axis with the X direction as the longitudinal direction, and connects the rotating blade 211 and the rotation drive source 212. The rotation shaft 213 is rotated by the rotation drive source 212 to rotate the rotating blade 211.

[0151] The pitch drive source 214 generates a rotational power for changing the pitch angle of the rotary blade 211. For the pitch drive source 214, a stepping motor may be used, but other types of motors may also be used. The fixed portion 215 is fixed in position and supports the rotation drive source 212 and the sliding shaft 218. The pitch angle changing mechanism 216 transmits the power of the pitch drive source 214 in a direction separate from the rotation of the rotary shaft 213 and parallel to the axial direction (X direction) of the rotary shaft 213, and changes the pitch angle of the rotary blade 211.

[0152] Specifically, the pitch angle changing mechanism 216 includes a rotation conversion portion 217, a sliding shaft 218, and a handle 219 (see Fig.40 The rotation conversion portion 217 connects the output shaft of the pitch drive source 214 and the sliding shaft 218 , and converts the rotation of the output shaft into the movement of the sliding shaft 219 in a direction parallel to the axial direction (X direction) of the rotation shaft 213 .

[0153] Fig.4121 is an enlarged view of the vicinity of the rotation conversion portion 217. As shown in the figure, the rotation conversion portion 217 is a sliding screw system and includes a screw shaft 217a and a nut 217b. The screw shaft 217a is an axis with the X direction as the longitudinal direction, which is connected to the output shaft of the pitch drive source 214 and includes a threaded groove (not shown in the figure). The nut 217b is screwed onto the screw shaft 217a and moves along the screw shaft 217a when the screw shaft 217a rotates. The nut 217b is connected to the sliding shaft 218 and moves the sliding shaft 218 along the axial direction (X direction) of the screw shaft 217a.

[0154] Sliding shaft 218 (see Fig.40 ) is an axis with the X direction as the longitudinal direction, which is arranged across the rotation drive source 212, and is supported so as to be connected to the rotation conversion part 217 and the handle 219, and slide in the axial direction (X direction) through the rotation conversion part 217. A bearing is provided between the rotation shaft 213 and the sliding shaft 218 to separate the rotation of the rotation shaft 213 and the movement of the sliding shaft 218.

[0155] Each rotating blade 211 is provided with a handle 219, which is similar to the handle 119 described above. The handle 219 is rotated by sliding the sliding shaft 218 to change the pitch angle of each rotating blade 211 (see Fig.28 and Fig.29 ).

[0156] In this configuration, the line of action of the pitch angle driving force is on the same line as the output shaft of the rotation driving source 212, which can make the pitch driving source 214 (see Fig.26 ) is reduced by one, thereby reducing the moment load on the pitch drive source 214 and other structures. In addition, the rotating shaft 213, the output shaft of the rotating drive source 212 and the output shaft of the pitch drive source 214 are located on the same line, which provides good force transmission efficiency and is conducive to reducing the volume. In addition, when air resistance is generated, the load on the pitch drive source 214 is reduced by sliding the rotation conversion part 217 of the screw system.

[0157] In addition, the rotation conversion section 217 may be configured as follows. Fig.42 2 is an enlarged view of the vicinity of the rotation conversion portion 217 having another configuration. As shown in the figure, the pitch drive source 214 is provided with an output shaft in the Z direction. The rotation conversion portion 217 is a cam lever system and includes a rotating body 217c and a lever 217d.

[0158] The rotating body 217c is connected to the output shaft of the pitch drive source 214 and rotates with the Z direction as the rotation axis direction. The rod 217d is connected to the rotating body 217c at one end and to the sliding shaft 218 at the other end. The rod 217d is connected to the rotating body 217c at a position spaced apart from the rotation axis of the rotating body 217c. When the rotating body 217c rotates, the rod 217d moves the sliding shaft 218 along its axial direction (X direction).

[0159] Likewise, in this configuration, the line of action of the pitch angle driving force is on the same line as the output shaft of the rotation driving source 212, which can reduce the number of pitch driving sources 214 by one, thereby reducing the moment load on the pitch driving source 214 and other structures. In addition, the rotation conversion portion 217 has a cam rod system, so that short-cycle motion can be performed. In this case, a pitch driving source 214 with a high rotation speed is suitable. The rotation speed of each motor becomes faster in the order of brushless DC motor> brushed DC motor> stepper motor.

[0160]

Hardware configuration of control device

[0161] A hardware configuration that can realize the functional configuration of the controller 180 will be described. Fig.43 is a schematic diagram showing the hardware configuration of the controller 180 .

[0162] As shown, the controller 180 includes a central processing unit (CPU) 1001 and a graphics processing unit (GPU) 1002. An input / output interface 1006 is connected to the CPU 1001 and the GPU 1002 via a bus 1005. A read only memory (ROM) 1003 and a random access memory (RAM) 1004 are connected to the bus 1005.

[0163] An input unit 1007, an output unit 1008, a storage unit 1009, and a communication unit 1010 are connected to the input / output interface 1006. The input unit 1007 includes an input device such as a keyboard and a mouse used by a user to input an operation instruction. The output unit 1008 outputs an image of a processing operation screen and a processing result to a display device. For example, the storage unit 1009 includes a hard disk drive in which programs and various data are stored. For example, the communication unit 1010 includes a local area network (LAN) adapter and performs communication processing through a network represented by the Internet. In addition, a drive 1011 is connected to the input / output interface 1006. The drive 1011 reads data from a removable storage medium 1012 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory and writes data therein.

[0164] The CPU 1001 performs various processes according to a program stored in the ROM 1003 or a program read from a removable storage medium 1012 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory to be installed on the storage unit 1009, and loads from the storage unit 1009 into the RAM 1004. Data required for the CPU 1001 to perform various processes is also stored as needed in the RAM 1004. The GPU 1002 performs calculation processing required for drawing an image under the control of the CPU 1001.

[0165] In the controller 180 having the above configuration, the above series of processing is performed by the CPU 1001 loading a program stored in, for example, the storage unit 1009 into the RAM 1004 and executing the program via the input / output interface 1006 and the bus 1005 .

[0166] For example, the program executed by the controller 180 may be provided by being recorded in the removable storage medium 1012 serving as, for example, a package medium. In addition, the program may be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting.

[0167] In the controller 180, the program can be installed on the storage unit 1009 via the input / output interface 1006 by the removable storage medium 1012 mounted on the drive 1011. In addition, the program can be received by the communication section 1010 via a wired or wireless transmission medium to be installed on the storage unit 1009. In addition, the program can be installed in the ROM 1003 or the storage unit 1009 in advance.

[0168] It should be noted that the program executed by the controller 180 may be a program that is processed in time in the order described in the present disclosure, or may be a program that is processed in parallel or processed at a necessary time (such as a call time). In addition, all hardware configurations of the controller 180 do not have to be included in a single device, and the controller 180 may include multiple devices. In addition, a part or all of the hardware configurations of the controller 180 may be included in multiple devices connected to each other via a network.

[0169]

About this disclosure

[0170] The effects described in the present disclosure are merely examples and are not limiting, and other effects may be obtained. The description of the above multiple effects does not necessarily mean that these effects are applied simultaneously. It means that at least any one of the above effects may be obtained according to conditions, etc., and it is possible to exhibit effects not described in the present disclosure. In addition, at least two of the characteristic parts described in the present disclosure may be combined with each other.

[0171] Note that the present technology can also adopt the following configurations. (1)

[0173] An airflow control device, comprising:

[0174] a first frame positioned about a rotation center and including a through hole;

[0175] a second frame located on an outer peripheral side relative to the first frame about the rotation center; and

[0176] A rectifier plate is flexible, one end of which is fixed to the rotation center and the other end of which is fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifier plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame around the rotation center. (2)

[0178] The airflow control device according to (1), wherein

[0179] The first frame has a cylindrical shape centered at the rotation center, and

[0180] The second frame has a cylindrical shape centered at the rotation center and has an inner diameter larger than an outer diameter of the first frame. (3)

[0182] The airflow control device according to (1) or (2), wherein

[0183] The through hole has a slit shape with a longitudinal direction being parallel to the rotation center, and

[0184] The rectifying plate is parallel to the rotation center. (4)

[0186] The airflow control device according to (1) or (2), wherein:

[0187] The through hole has a slit shape with one direction as a longitudinal direction, and the longitudinal direction changes between a direction parallel to the rotation center and a direction inclined with respect to the direction parallel to the rotation center according to the relative rotation, and

[0188] The rectifying plate changes between a state parallel to the rotation center and a state inclined with respect to the rotation center according to the relative rotation. (5)

[0190] The airflow control device according to any one of (1) to (4), further comprising:

[0191] A fan is capable of changing a pitch angle of a rotating blade and delivering an airflow to the fairing. (6)

[0193] The airflow control device according to (5), wherein

[0194] The fan includes a rotation drive source, a rotation shaft, a pitch drive source, and a pitch angle changing mechanism. The rotation shaft is connected to the rotating blades and the rotation drive source and is rotated by the rotation drive source to rotate the rotating blades. The pitch angle changing mechanism transmits the force of the pitch drive source in a direction separate from the rotation of the rotation shaft and parallel to the axial direction of the rotation shaft, and changes the pitch angle of the rotating blades. (7)

[0196] The airflow control device according to (6), wherein:

[0197] The pitch angle changing mechanism includes a handle portion and a sliding shaft. The handle portion changes the pitch angle of the rotary blade by rotating. The sliding shaft slides in a direction parallel to the rotary shaft by the drive of the pitch driving source to rotate the handle portion. (8)

[0199] The airflow control device according to any one of (1) to (7), further comprising:

[0200] A nozzle is provided, wherein the nozzle diameter is changed, and the airflow having passed through the rectifying plate flows into the nozzle. (9)

[0202] The airflow control device according to any one of (1) to (7), further comprising:

[0203] a fan capable of changing the pitch angle of rotating blades and delivering airflow to the fairing; and

[0204] A nozzle is provided, wherein the nozzle diameter is changed, and the airflow having passed through the rectifying plate flows into the nozzle. (10)

[0206] An airflow control system, comprising:

[0207] An airflow control device, the airflow control device comprising:

[0208] a first frame positioned about a rotation center and including a through hole;

[0209] a second frame located on an outer peripheral side relative to the first frame about the rotation center; and

[0210] a rectifying plate which is flexible, one end of which is fixed to the rotation center and the other end of which is fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifying plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame about the rotation center; and

[0211] A controller controls the rectifying plate to define a relative rotation angle of the first frame and the second frame around the rotation center. (11)

[0213] The airflow control system according to (10), wherein

[0214] The airflow control device further includes a nozzle capable of changing a nozzle diameter, the airflow having passed through the rectifying plate flowing into the nozzle, and

[0215] The controller further controls the nozzle to define the nozzle diameter. (12)

[0217] The airflow control system according to (11), wherein

[0218] The controller changes the degree of divergence and convergence of the airflow delivered from the airflow control device by controlling the rectifying plate and the nozzle. (13)

[0220] The airflow control system according to (12), wherein

[0221] The controller controls the rectifying plate and the nozzle to present an airflow simulated in a space in a virtual space to a user. (14)

[0223] The airflow control system according to any one of (10) to (13), wherein

[0224] The airflow control device further includes a fan capable of changing the pitch angle of the rotating blades and delivering the airflow to the fairing, and

[0225] The controller further controls the fan to define the pitch angle. (15)

[0227] The airflow control system according to (14), wherein

[0228] The controller controls the rectifying plate and the fan to change the diffusion and convergence degree and flow rate of the airflow delivered from the airflow control device. (16)

[0230] The airflow control system according to (15), wherein

[0231] The controller controls the rectifying plate and the fan to present an airflow simulated in the space in the virtual space to a user. (17)

[0233] The airflow control system according to any one of (10) to (16), wherein

[0234] The airflow control device further includes a nozzle and a fan, wherein the nozzle is capable of changing the nozzle diameter, the airflow having flowed through the fairing flows into the nozzle, and the fan is capable of changing the pitch angle of the rotating blades and delivering the airflow to the fairing, and

[0235] The controller changes the degree of diffusion and convergence and the flow rate of the airflow delivered from the airflow control device by controlling the rectifying plate, the nozzle and the fan. (18)

[0237] The airflow control system according to (17), wherein

[0238] The controller controls the rectifying plate, the nozzle, and the fan to present an airflow simulated in a space in a virtual space to a user. (19)

[0240] An airflow control method, comprising:

[0241] Controlling the rectifying plate of the airflow control device to limit the relative rotation angle of the first frame and the second frame around the rotation center, the airflow control device comprising:

[0242] the first frame, the first frame being positioned about the rotation center and comprising a through hole;

[0243] the second frame located on the outer peripheral side relative to the first frame about the rotation center; and

[0244] The rectifying plate, which is flexible and has one end fixed to the rotation center and the other end fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifying plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame around the rotation center. (20)

[0246] An airflow control method, comprising:

[0247] The airflow control device generating the airflow is controlled based on the flow rate and reach of the airflow presented to the user.

[0248] Reference numerals

[0249] 100 Airflow Control Equipment

[0250] 105 Pitch angle changing mechanism

[0251] 110, 210 fans

[0252] 111, 211 Rotating blades

[0253] 112, 212 Rotation drive source

[0254] 113, 213 Rotation axis

[0255] 114, 214 Pitch drive source

[0256] 115, 216 Pitch angle changing mechanism

[0257] 116 Arm

[0258] 117 Removable parts

[0259] 118, 218 sliding shaft

[0260] 119, 219 handle

[0261] 120 Rectifier unit

[0262] 121 First Frame

[0263] 122 Second Frame

[0264] 123 Rectifier

[0265] 130 Nozzle

[0266] 131 Board

[0267] 151 Through Hole

[0268] 152 Through Hole

[0269] 170 Airflow Control System

[0270] 180 Control Equipment

[0271] 181 Airflow characteristic determination unit

[0272] 182 Nozzle Controller

[0273] 183 Rectifier board controller

[0274] 184 Fan Controller

Claims

1. An airflow control device, comprising: a first frame positioned about a rotation center and including a through hole; a second frame located on an outer peripheral side relative to the first frame about the rotation center; as well as A rectifier plate is flexible, one end of which is fixed to the rotation center and the other end of which is fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifier plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame around the rotation center.

2. The airflow control device according to claim 1, wherein The first frame has a cylindrical shape centered at the rotation center, and The second frame has a cylindrical shape centered at the rotation center and has an inner diameter larger than an outer diameter of the first frame.

3. The airflow control device according to claim 1, wherein The through hole has a slit shape with a longitudinal direction being parallel to the rotation center, and The rectifying plate is parallel to the rotation center.

4. The airflow control device according to claim 1, wherein: The through hole has a slit shape with one direction as a longitudinal direction, and the longitudinal direction changes between a direction parallel to the rotation center and a direction inclined with respect to the direction parallel to the rotation center according to the relative rotation, and The rectifying plate changes between a state parallel to the rotation center and a state inclined with respect to the rotation center according to the relative rotation.

5. The airflow control device according to claim 1, further comprising: A fan is capable of changing a pitch angle of a rotating blade and delivering an airflow to the fairing.

6. The airflow control device of claim 5, wherein The fan includes a rotation drive source, a rotation shaft, a pitch drive source, and a pitch angle changing mechanism. The rotation shaft is connected to the rotating blades and the rotation drive source and is rotated by the rotation drive source to rotate the rotating blades. The pitch angle changing mechanism transmits the force of the pitch drive source in a direction separate from the rotation of the rotation shaft and parallel to the axial direction of the rotation shaft, and changes the pitch angle of the rotating blades.

7. The airflow control device according to claim 6, wherein: The pitch angle changing mechanism includes a handle portion and a sliding shaft. The handle portion changes the pitch angle of the rotary blade by rotating. The sliding shaft slides in a direction parallel to the rotary shaft by the drive of the pitch driving source to rotate the handle portion.

8. The airflow control device of claim 1, further comprising: A nozzle is provided, wherein the nozzle diameter is changed, and the airflow having passed through the rectifying plate flows into the nozzle.

9. The airflow control device of claim 1, further comprising: a fan capable of changing the pitch angle of rotating blades and delivering airflow to the fairing; and A nozzle is provided, wherein the nozzle diameter is changed, and the airflow having passed through the rectifying plate flows into the nozzle.

10. An airflow control system, comprising: An airflow control device, the airflow control device comprising: a first frame positioned about a rotation center and including a through hole; a second frame located on an outer peripheral side relative to the first frame about the rotation center; and a rectifying plate which is flexible, one end of which is fixed to the rotation center and the other end of which is fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifying plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame about the rotation center; and A controller controls the rectifying plate to define a relative rotation angle of the first frame and the second frame around the rotation center.

11. The airflow control system of claim 10, wherein The airflow control device further includes a nozzle capable of changing a nozzle diameter, the airflow having passed through the rectifying plate flowing into the nozzle, and The controller further controls the nozzle to define the nozzle diameter.

12. The airflow control system of claim 11, wherein The controller changes the degree of divergence and convergence of the airflow delivered from the airflow control device by controlling the rectifying plate and the nozzle.

13. The airflow control system of claim 12, wherein The controller controls the rectifying plate and the nozzle to present an airflow simulated in the space in a virtual space to a user.

14. The airflow control system of claim 10, wherein The airflow control device further includes a fan capable of changing the pitch angle of the rotating blades and delivering the airflow to the fairing, and The controller further controls the fan to define the pitch angle.

15. The airflow control system of claim 14, wherein The controller controls the rectifying plate and the fan to change the diffusion and convergence degree and flow rate of the airflow delivered from the airflow control device.

16. The airflow control system of claim 15, wherein The controller controls the rectifying plate and the fan to present an airflow simulated in the space in the virtual space to a user.

17. The airflow control system of claim 10, wherein The airflow control device further includes a nozzle and a fan, wherein the nozzle is capable of changing the nozzle diameter, the airflow having flowed through the fairing flows into the nozzle, and the fan is capable of changing the pitch angle of the rotating blades and delivering the airflow to the fairing, and The controller changes the degree of diffusion and convergence and the flow rate of the airflow delivered from the airflow control device by controlling the rectifying plate, the nozzle and the fan.

18. The airflow control system of claim 17, wherein The controller controls the rectifying plate, the nozzle, and the fan to present an airflow simulated in a space in a virtual space to a user.

19. A method for controlling airflow, comprising: Controlling the rectifying plate of the airflow control device to limit the relative rotation angle of the first frame and the second frame around the rotation center, the airflow control device comprising: the first frame, the first frame being positioned about the rotation center and comprising a through hole; the second frame located on the outer peripheral side relative to the first frame about the rotation center; and The rectifying plate, which is flexible and has one end fixed to the rotation center and the other end fixed to the second frame, passes through the through hole, and a deflection amount of a portion of the rectifying plate between the through hole and the rotation center changes according to a length of the portion due to a relative rotation of the first frame and the second frame around the rotation center.

20. A method for controlling airflow, comprising: The airflow control device generating the airflow is controlled based on the flow rate and reach of the airflow presented to the user.

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