JP2019111965A - Airflow control device - Google Patents

Abstract

To provide an airflow control device which properly controls airflow around a wiper device.SOLUTION: An airflow control device is provided at a wiper device 100 having: a wiper arm 110 which swings around a rotary shaft provided adjacent to an end part of a wind screen 20 provided at a cabin 10 of a vehicle 1; and a blade holder 120 attached to the wiper arm and holding a wiper blade. The airflow control device includes: an airflow generation part 200 which is provided in at least one of the wiper arm and the blade holder; and a control part 310 which causes the airflow generation part to generate airflow F flowing in a direction that the airflow F inhibits influence of turbulent flow caused by travel wind W flowing around the airflow generation part when the wiper arm operates.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a wiper device provided in a wiper device of a vehicle such as a car.

A wiper device provided in a vehicle such as an automobile is provided with a blade holder for holding a wiper blade formed of rubber or the like at the tip of a wiper arm that swings within a predetermined angle range by an actuator such as an electric motor. It wipes the screen (window glass).
Such a wiper device inevitably has a protrusion projecting from the surface of the windscreen of the vehicle, and therefore, air resistance and aerodynamic noise (wind The sound may be deteriorated, or the wiper blade may be lifted.
For this reason, various rectification means for rectifying the air flow around the wiper device have been proposed.

As prior art related to control of the air flow around the wiper device, for example, Patent Document 1 describes that an air flow deflector movable relative to the wiper arm is provided to prevent the wiper blade from rising.
Further, Patent Document 2 describes that a guide portion that receives an air flow and guides and rectifies it in the traveling direction is formed in a retainer portion of the wiper arm.
Further, Patent Document 3 describes that a protrusion having a predetermined shape is provided on a lower end portion or an upper surface portion of a side wall of a wiper arm to generate an eddy current, thereby suppressing generation of a larger eddy current and reducing wind noise. ing.

JP-A-3-61151 Unexamined-Japanese-Patent No. 2010-125872 JP 2005-329875 A

The above-described prior arts are all passive based on the control of the traveling wind flowing into the vicinity of the wiper device, and depending on the flow velocity of the traveling wind, the angular relationship between the wiper arm and the traveling wind, etc. There is concern that you can not get
For this reason, it is demanded to control the air flow around the wiper device more effectively to reduce air resistance and aerodynamic noise.
SUMMARY OF THE INVENTION In view of the problems described above, an object of the present invention is to provide a rectifying device that appropriately controls the air flow around the wiper device.

The present invention solves the above-mentioned problems by the following solutions.
According to a first aspect of the present invention, there is provided a windscreen provided in a cabin of a vehicle, a wiper arm swinging around a rotation axis provided adjacent to an end of the windscreen, and a swing of the wiper arm attached to the wiper arm. A rectifying device provided in a wiper apparatus having a blade holder for holding a wiper blade that wipes the wind screen according to a movement, the air flow generation unit provided in at least one of the wiper arm and the blade holder, And a control unit configured to generate, in the air flow generation unit, an air flow in a direction to suppress the influence of turbulent flow caused by traveling air flowing around the air flow generation unit when the wiper arm is operated.
According to this, when traveling wind flows around the wiper arm and the blade holder, the air flow generation unit generates an air flow in a direction to suppress the generation of the turbulent flow, thereby causing the turbulent flow generated by the wiper device. It is possible to prevent the deterioration of air resistance and aerodynamic noise.

In the invention according to claim 2, the air flow generation portion is provided at an end of at least one of the wiper arm and the blade holder on the opposite side to the wind screen side, along the surface of the wind screen and for the vehicle body The flow control device according to claim 1, wherein an air flow having a velocity component parallel to a relative movement direction of the air flow generation unit is generated.
According to this, when the wiper arm and the blade holder swing, the air flow generation unit generates an air flow in a direction not against the traveling wind flowing along the surface of the windscreen, thereby suppressing the generation of the turbulent flow. In addition to reducing the recirculation area (the area where the vortex is recirculating) causing air resistance and blowing the turbulence away from the wiper arm and blade holder even if it occurs, the reattachment position on the windscreen is kept away Thus, the deterioration of the air resistance and the aerodynamic noise can be appropriately prevented.

The invention according to claim 3 is that the control unit causes the air flow generation unit to generate an air flow flowing to the downstream side of the traveling air, when the air flow generating unit is moving with the traveling air as the opposing wind. It is a rectifier of Claim 2 characterized by the above-mentioned.
In the invention according to claim 4, the control unit is configured to move the air flow generation unit as a trailing wind and the flow velocity of the movement wind to the vehicle body is lower than the velocity of the air flow generation unit to the vehicle body. The flow control unit according to claim 2 or 3, wherein an air flow that flows to the upstream side of the traveling wind is generated in an air flow generation unit.
In the invention according to claim 5, the control unit is configured to move the air flow generation unit as a trailing wind and the flow velocity of the movement wind to the vehicle body is higher than the velocity of the air flow generation unit to the vehicle body. The flow control unit according to any one of claims 2 to 4, wherein an air flow that flows to the downstream side of the traveling wind is generated in an air flow generation unit.
According to each of the inventions described above, the above-described effects can be reliably obtained by appropriately controlling the air flow generation unit in accordance with the direction and relative speed of the traveling wind with respect to the air flow generation unit.

In the invention according to claim 6, the rotary shaft of the wiper arm is provided in the vicinity of the lower end portion of the windscreen, and the control unit is configured such that the wiper arm is in the middle of the swing range of the wiper arm. The flow control device according to any one of claims 2 to 5, characterized in that the flow velocity of the air flow generated by the air flow generation unit is controlled to be faster than that in the case near the lower end. .
According to this, in the middle part of the swing range in which the wiper arm and the blade holder receive relatively strong traveling wind and turbulent flow is easily generated, the turbulent flow suppressing effect can be enhanced, and the above-described effects can be appropriately exhibited. .

The invention according to claim 7 is characterized in that the air flow generated by the air flow generation unit has a velocity component in the direction of moving away from the surface of the windscreen. It is a rectification device of a statement.
The invention according to claim 8 is provided at the downstream end of the air flow generated by the air flow generation unit of the wiper arm or the blade holder, and generates an air flow having a velocity component in a direction away from the windscreen. It has an auxiliary air flow generation part, It is a rectifier of any one of Claim 2-7 characterized by the above-mentioned.
According to each of the inventions, it is possible to deflect the generated turbulent flow in a direction away from the wind screen and to blow it away, and it is possible to promote the above-described effect by setting the reattachment position to the wind screen to be further away. .

The invention according to claim 9 is the upstream which is provided at the upstream end of the air flow generated by the air flow generation unit of the wiper arm or the blade holder, and generates the air flow having a velocity component in the direction approaching the windscreen. The rectifier according to any one of claims 2 to 8, further comprising a side auxiliary air flow generating unit.
According to this, it is possible to further suppress the generation of turbulent flow by guiding the traveling wind colliding with the wiper arm and the blade holder to the wind screen side and passing the gap between the wiper arm and the blade holder and the wind screen. .

In the invention according to claim 10, at least a part of the air flow generation unit is provided in the blade holder, one end of a swing range of the blade holder is disposed in the vicinity of a pillar of a vehicle, and the control unit The air flow is generated in the air flow generation portion so that a negative pressure area is formed between the blade holder and the pillar when the blade holder approaches the pillar. It is a rectification device given in any 1 paragraph to nine.
According to this, it is possible to prevent water and the like wiped to the side of the pillar by the blade from passing over the pillar and coming around to the side of the vehicle body, and it is possible to prevent the glass and the side view mirror etc.

In the invention according to claim 11, at least a part of the air flow generation unit is provided in the blade holder, one end of a swing range of the blade holder is disposed in the vicinity of a pillar of a vehicle, and the control unit The rectifier according to any one of claims 1 to 9, wherein when the blade holder is close to the pillar, an air flow flowing to the pillar side is generated.
According to this, by separating the turbulent flow generated in the vicinity of the wiper device from the vehicle body and blowing it away in the vehicle width direction, the turbulent flow reattaches to the side portion of the vehicle body immediately after the pillar to deteriorate air resistance and aerodynamic noise. Can be prevented.

The invention according to claim 12 is characterized in that the air flow generation unit is a plasma actuator having a pair of electrodes disposed with a dielectric interposed therebetween and a power supply for applying an alternating voltage to the electric power. The rectifier according to any one of claims 11 to 12.
According to this, it is possible to generate an air flow with good response by a simple configuration having no movable part, and the above-mentioned effect can be reliably obtained.

  As described above, according to the present invention, it is possible to provide a rectifying device that appropriately controls the air flow around the wiper device.

1 is an external perspective view of a windscreen peripheral portion of a vehicle provided with a first embodiment of a rectifying device to which the present invention is applied. It is an II-II section arrow sectional view of FIG. FIG. 5 is a schematic cross-sectional view of the arm upper surface plasma actuator in the rectifying device of the first embodiment cut along a plane parallel to the direction of air flow; It is IV-IV section arrow sectional drawing of FIG. It is a block diagram showing composition of a rectifier of a 1st embodiment. It is a flowchart which shows operation | movement of the rectifier of 1st Embodiment. It is a flowchart which shows the turbulent flow suppression control of the rectifier of 1st Embodiment. It is a figure which shows the state at the time of driving | running | working wind colliding with the driver's seat side wiper arm which is a comparative example of this invention. It is a figure which shows the state of the driver's seat side wiper arm in pillar side airflow formation control in the rectifier of 1st Embodiment. It is a figure which shows the driver's seat side blade holder state in pillar side airflow formation control in the rectifier of 1st Embodiment. BRIEF DESCRIPTION OF THE DRAWINGS It is an external appearance perspective view which shows the state in which a wiper apparatus is in a storing state in the vehicle which has a rectifier of 1st Embodiment. FIG. 6 is an external perspective view showing a state immediately after the driver's seat side wiper arm or the like starts moving to the A-pillar side in the vehicle having the rectifying device of the first embodiment. It is an appearance perspective view showing the state when the driver's seat side wiper arm etc. move to the A pillar side in the vehicle which has the rectification device of a 1st embodiment, and exist in the middle part of the rocking range. It is an appearance perspective view showing a state when driver's seat side wiper arm etc. are near a turning point which approaches the A pillar side in the vehicle which has a rectification device of a 1st embodiment. It is an appearance perspective view showing a state when a driver's seat side wiper arm etc. move to a cowl part side in a vehicle which has a rectification device of a 1st embodiment, and it exists in a middle part of a rocking range. It is an appearance perspective view showing the state just before a driver's seat side wiper arm etc. return to a cowl part in vehicles which have a rectification device of a 1st embodiment. It is an appearance perspective view showing a state when driver's seat side wiper arm etc. are near a turning point which approaches the A pillar side in vehicles which have a 2nd embodiment of a rectifier to which the present invention is applied. It is sectional drawing of the driver's seat side blade holder in 3rd Embodiment of the rectification device to which this invention is applied. It is sectional drawing of the driver's seat side wiper arm in 4th Embodiment of the rectifier which applied this invention. It is sectional drawing of the driver's seat side wiper arm in 4th Embodiment of the rectifier which applied this invention.

First Embodiment
Hereinafter, a first embodiment of a rectifier to which the present invention is applied will be described.
The rectifying device of the first embodiment is provided, for example, in a motor vehicle such as a passenger car, provided in a wiper device that wipes a wind screen that is a window glass provided in the front of a cabin, and rectifies the air flow around the wiper arm and the blade holder. It is

FIG. 1 is an external perspective view of a windscreen peripheral portion of a vehicle provided with the rectifying device of the first embodiment.
The vehicle 1 includes a cabin 10, a wind screen 20, a front hood 30, a front fender 40, a cowl unit 50, a wiper device 100, and the like.

The vehicle 1 is, for example, a 3 box type, 2 box type or the like passenger car having an engine compartment in front of a cabin 10.
The cabin 10 is a portion in which an occupant and the like are accommodated, and is provided at a central portion in the front-rear direction of the vehicle 1.
The cabin 10 is configured to have a roof 11, an A-pillar 12, a front side door 13, a front door glass 14, a side view mirror 15, and the like.

The roof 11 is a panel-like member that constitutes a ceiling portion of the cabin 10.
The A-pillar 12 is a columnar member projecting downward from the left and right side end portions of the front end portion of the roof 11.
The A-pillar 12 is arranged to be inclined such that the lower end advances with respect to the upper end.
The upper end of the A-pillar 12 is connected to a roof side rail extending along the side end of the roof 11.

The front side door 13 is a portion that constitutes a side surface portion in the front half portion of the cabin 10.
The front side door 13 is an openable door-like body used for getting on and off the passengers of the driver's seat and the passenger's seat.
The front door glass 14 is provided on the upper portion of the front side door 13 and constitutes a part of the side portion of the vehicle 1.
The front door glass 14 is mounted to be able to move up and down with respect to the front side door 13.
When the front door glass 14 is in the raised state (door window closed state), the upper edge of the front door glass 14 is disposed along the roof side rail at the side end of the roof 11.
At this time, the front edge of the front door glass 14 is disposed along the A-pillar 12.

The side view mirror 15 is provided with a mirror surface portion for the occupant to visually check the rear of the vehicle.
The side view mirror 15 is provided so as to protrude outward in the vehicle width direction from an upper portion in the vicinity of the front end portion of the front side door 13.

The wind screen 20 is a glass substantially transparent member (front window glass) provided at the front of the cabin 10.
The wind screen 20 is provided so as to close a front window which is mainly used when the occupant looks at the front of the vehicle.
The wind screen 20 is configured, for example, as a laminated glass of a quadratic curved surface curved in the direction in which the central portion protrudes outward.

The front hood 30 is a panel-like member provided on the front side of the cabin 10 and provided on the top of an engine compartment in which a power train such as an engine that is a driving power source of the vehicle 1 is accommodated.
The front hood 30 is provided to be inclined with respect to the horizontal surface such that the front end is below the rear end.
A front end portion of the front hood 30 is disposed adjacent to an upper end portion of a radiator grill (not shown) and a front combination lamp constituting a light emitting portion of the headlight device.
The rear end of the front hood 30 is disposed adjacent to the lower end of the wind screen 20.

The front fender 40 is a panel-like member that constitutes a side portion of the engine compartment.
The front fender 40 is formed with a wheel arch which is an opening of a wheel house accommodating the front wheel (not shown) of the vehicle 1.
The rear edge of the front fender 40 is disposed adjacent to the front edge of the front side door 13.

The cowl portion 50 is a portion provided between the lower end (front end) of the wind screen 20 and the rear end of the front hood 30.
The cowl portion 50 is configured as a space portion recessed downward with respect to the rear end portion of the front hood 30.
The cowl unit 50 is provided with a wiper device 100 to be described below, a washer device (not shown) for jetting a washer fluid to the wind screen 20, and the like.

The wiper device 100 wipes water droplets and the like adhering to the surface of the wind screen 20 with a blade B made of rubber.
In the first embodiment, a so-called right-hand drive car with the right front seat as the driver's seat will be described, but in the case of a so-called left-hand drive car with the left front seat as the driver's seat, the left and right are reversed. .

The wiper apparatus 100 has a driver's seat side wiper arm 110, a passenger's seat side wiper arm 120, a driver's seat side blade holder 130, a passenger's seat side blade holder 140 and the like.
The driver's seat side wiper arm 110 and the passenger's seat side wiper arm 120 swing around the rotation center axis provided in the cowl 50, and shake the driver's seat side blade holder 130 and the passenger's seat side blade holder 140 along a predetermined locus. It is a wiper arm to move.

The driver's seat side wiper arm 110 can swing around a rotation center axis provided near the end on the right side of the cowl portion 50 in the vehicle width direction.
The driver's seat side wiper arm 110 is disposed at a standby position (position when the wiper apparatus 100 is not in use) disposed substantially along the lower end of the windscreen 20 and a position (reverse position) adjacent to the right A pillar 12. Swing between.

FIG. 2 is a cross-sectional view taken along line II-II in FIG.
FIG. 2 shows a cross section of the driver's seat side wiper arm 110 cut along a plane orthogonal to its longitudinal direction.
In FIG. 2, the left side shows the A-pillar 12 side at the time of rocking, and the right side shows the cowl 50 side (the same in FIG. 4).

The driver's seat side wiper arm 110 has an upper surface portion 111 and end surface portions 112 and 113.
The upper surface portion 111 is a flat portion disposed substantially parallel to the surface of the windscreen 20.
The end surface portions 112 and 113 are flat plate-like portions formed to protrude toward the wind screen 20 from both end portions of the upper surface portion 111 in the width direction (direction orthogonal to the longitudinal direction).
The end surface portion 112 is provided at an end portion of the upper surface portion 111 on the A pillar 12 side.
The end surface portion 113 is provided at an end portion of the upper surface portion 111 on the side of the cowl portion 50.
A spring or the like (not shown) is disposed in the space between the end surface portions 112 and 113.
The end portions of the end face portions 112 and 113 on the wind screen 20 side are disposed to face the surface of the wind screen 20 at a distance.

The upper surface portion 111 is provided with an arm upper surface plasma actuator 200.
The arm upper surface plasma actuator 200 is an air flow generating unit that generates an air flow F in a direction substantially parallel to the upper surface portion 111 of the driver's seat side wiper arm 110.
FIG. 3 is a schematic cross-sectional view of the arm upper surface plasma actuator 200 cut in a plane parallel to the generation direction of the air flow.
A plasma actuator is a fluid control device that induces an air flow with a configuration without moving parts.
The arm upper surface plasma actuator 200 in the present embodiment is, for example, a dielectric barrier discharge plasma actuator (DBD-PA).

The arm upper surface plasma actuator 200 is configured to include a dielectric 210, an upper electrode 220, a lower electrode 230, an insulator 240 and the like.
The dielectric 210 is a sheet-like member made of, for example, a fluorocarbon resin such as polytetrafluoroethylene.
The upper electrode 220 and the lower electrode 230 are made of, for example, a conductive tape made of a metal thin film such as copper.
The upper electrode 220 is attached to the surface side of the dielectric 210 (the side exposed to the outside when attached to the wheel W).
The lower electrode 230 is attached to the back side of the dielectric 210.
The upper electrode 220 and the lower electrode 230 are offset in the surface direction of the dielectric 210.
The insulator 240 is a sheet-like member to be a base of the arm upper surface plasma actuator 200, and is provided on the back surface side of the dielectric 210 so as to cover the lower electrode 230.

When an AC voltage having a predetermined waveform is applied to the upper electrode 220 and the lower electrode 230 of the arm upper surface plasma actuator 200 by the power source PS, plasma discharge P is generated between the electrodes.
The applied voltage needs to be high enough to cause dielectric breakdown and generate plasma discharge P, and can be, for example, about 1 to 10 kV.
The frequency of the applied voltage can be, for example, about 1 to 10 kHz.
At this time, the air on the front surface side of the arm upper surface plasma actuator 200 is attracted to the plasma discharge P, and an air flow F in the form of a wall jet is generated.
The arm upper surface plasma actuator 200 can also reverse the direction of the air flow F by controlling the waveform of the applied AC voltage.

The direction of the air flow F formed by the arm upper surface plasma actuator 200 is, for example, orthogonal to the longitudinal direction of the driver's side wiper arm 110 when viewed from the direction orthogonal to the surface of the windscreen 20 (normal direction of the surface of the windscreen 20). It may be the direction in which
Further, the direction of the air flow F may be inclined with respect to the driver's seat side wiper arm 110 in order to optimize the rectification effect when the traveling wind flows obliquely with respect to the driver's seat side wiper arm 110.

An arm pillar side plasma actuator 200A and an arm cowl side plasma actuator 200B are provided on the end face portions 112 and 113 of the driver seat side wiper arm 110, respectively.
The arm pillar side plasma actuator 200A and the arm cowl side plasma actuator 200B have substantially the same configuration as the arm upper surface plasma actuator 200 described above.
The arm pillar side plasma actuator 200A and the arm cowl side plasma actuator 200B can generate air flows Fa and Fb in a direction substantially orthogonal to the surface of the windscreen 20, respectively.

The front passenger's seat side wiper arm 120 is swingable around a rotation center axis provided at an intermediate portion in the vehicle width direction of the cowl portion 50.
The passenger side wiper arm 120 is operated between a standby position disposed substantially along the lower end of the windscreen 20 and a position where the tip of the passenger seat side blade holder 140 approaches the upper end of the windscreen 20. It swings in conjunction with the seat side wiper arm 110.
The passenger side wiper arm 120 has a configuration substantially similar to the configuration of the driver side wiper arm 110 shown in FIG.

The driver's seat side blade holder 130 is a member that is detachably attached to the tip of the driver's seat side wiper arm 110 and holds a blade B that wipes water droplets and the like attached to the windscreen 20.
FIG. 4 is a cross-sectional view taken along line IV-IV in FIG.
FIG. 4 shows a cross section of the driver's seat side blade holder 130 cut along a plane perpendicular to the longitudinal direction.
The driver's seat side blade holder 130 holds the blade B and the rail R, and includes a projecting end portion 131, sloped portions 132 and 133, and the like.

The blade B is a rubber member having a lip that slides in contact with the surface of the windscreen 20.
At the upper portion (the end opposite to the wind screen 20) of the blade B, a groove is formed in which the rail R is fitted.
The rail R is a member formed in a band plate shape, for example, of metal or the like, and is fitted into the groove of the blade B.

The end portion 131 is a convex portion formed by raising the central portion in the width direction of the upper surface portion (surface portion on the opposite side to the wind screen 20 side) of the driver's seat side blade holder 130.
The slope portions 132 and 133 are surface portions respectively provided on the A pillar 12 side and the cowl portion 50 side of the projecting end portion 131, and the windscreen 20 is approached to the windscreen 20 according to the distance from the projecting end portion 131. It is formed to be inclined with respect to the surface of.
The sloped portions 132 and 133 are formed as a concave curved surface having an arc shape in a cross sectional view shown in FIG. 4.
An engaging portion that engages with the rail R and holds the rail R is formed on the back surface portion (surface portion on the wind screen 20 side) of the inclined surface portions 132 and 133.

The blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D are provided on the slope parts 132 and 133, respectively.
The blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D have substantially the same configuration as the arm upper surface plasma actuator 200 described above.

The passenger's seat side blade holder 140 is a member that is detachably attached to the tip of the passenger's seat side wiper arm 120 and holds the blade B.
The passenger side blade holder 140 has substantially the same configuration as the driver's side blade holder 130 shown in FIG.

FIG. 5 is a block diagram showing the configuration of the rectifying device of the first embodiment.
As shown in FIG. 5, the rectifying device includes a plasma actuator control unit 310, a drive power supply unit 320, a wiper device control unit 330, and the like.

  The plasma actuator control unit 310 controls each plasma actuator (arm upper surface plasma actuator 200, arm pillar side plasma actuator 200A, arm cowl side, etc., based on the operation state of the wiper device 100 and information such as traveling speed (vehicle speed) of the vehicle. The direction and the intensity of the air flow F when operating the plasma actuator 200B, the blade holder pillar side plasma actuator 200C, and the blade holder cowl side plasma actuator 200D) are set.

A vehicle speed sensor 311 is connected to the plasma actuator control unit 310.
The vehicle speed sensor 311 is provided at the hub portion of the wheel and outputs a vehicle speed pulse signal of a frequency according to the rotation speed of the wheel.
The vehicle speed sensor 311 may be connected via another unit such as, for example, a behavior control unit that performs ABS control or behavior control.
The plasma actuator control unit 310 has a function of estimating the flow velocity distribution of the traveling wind W near the surface of the windscreen 20 from the traveling speed (vehicle speed) of the vehicle calculated using the output of the vehicle speed sensor 311.

The drive power supply unit 320 supplies drive voltage to each plasma actuator in response to a command from the plasma actuator control unit 310.
The drive power supply unit 320 is configured to include, for each plasma actuator, a power supply device that generates AC power having a predetermined voltage waveform, and a switch device that switches between energization and cutoff of each plasma actuator.

The wiper device control unit 330 controls the operation of the wiper device 100.
The wiper device control unit 330 has a function of issuing a command to the wiper motor 331 and controlling the on / off of the wiper motor 331 and the speed at the time of operation.
The wiper motor 331 is an electric actuator that swings the driver's seat side wiper arm 110 and the passenger's seat side wiper arm 120 of the wiper device 100.
The driver's side wiper arm 110 and the passenger's side wiper arm 120 are connected by a mechanical linkage, and are configured to operate in conjunction with a single wiper motor 331.

A wiper position sensor 332 is connected to the wiper device control unit 330.
The wiper position sensor 332 is provided with a position encoder that detects the position of the driver's side wiper arm 110 and the passenger's side wiper arm 120 within the swing range.
In addition, since the driver's seat side wiper arm 110 and the front passenger's seat side wiper arm 120 interlock with each other by the linkage, it is possible to calculate the other position by actually detecting one of the positions.

The operation of the rectifier of the first embodiment will be described below.
FIG. 6 is a flowchart showing the operation of the rectifier of the first embodiment.
Hereinafter, each step will be described in order.

<Step S01: Wiper Operating State Determination>
The plasma actuator control unit 310 determines whether the wiper motor 331 is operating based on the information from the wiper device control unit 330 (whether the driver's side wiper arm 110 and the passenger's side wiper arm 120 are swinging or not). To determine.
If the wiper motor 331 is in operation, the process proceeds to step S02. Otherwise, the process proceeds to step S07.

<Step S02: Vehicle Speed Determination>
The plasma actuator control unit 310 takes into consideration that the vehicle speed detected by the vehicle speed sensor 311 causes air resistance deterioration and aerodynamic noise (wind noise) deterioration due to interference of traveling wind to the wiper device 100. It is then determined whether or not it is equal to or greater than a preset threshold.
If the current vehicle speed is equal to or higher than the threshold value, the process proceeds to step S03. Otherwise, the process proceeds to step S07.

<Step S03: Arm position cowl part vicinity determination>
The plasma actuator control unit 310 determines whether the position of the driver's seat side wiper arm 110 provided by the wiper device control unit 330 is in the vicinity of the cowl unit 50.
For example, when the swing angle of the driver seat side wiper arm 110 around the rotation center axis of the driver seat side wiper arm 110 is less than 30 ° from the storage position where the position of the driver seat side wiper arm 110 is closest to the front hood 30 side in the swing range. The driver's seat side wiper arm 110 is in the vicinity of the cowl portion 50, and it is judged that the traveling wind colliding with the driver's seat side wiper arm 110 is relatively weak (turbulence hardly occurs), and the process proceeds to step S07. In the case, the process proceeds to step S04.

<Step S04: arm position pillar neighborhood size>
The plasma actuator control unit 310 determines whether or not the position of the driver's seat side wiper arm 110 provided from the wiper device control unit 330 is in the vicinity of the A-pillar 12.
For example, when the swing angle around the rotation center axis of the driver seat wiper arm 110 is less than 10 ° from the reverse position where the position of the driver seat wiper arm 110 is closest to the A pillar 12 side within the swing range. The process proceeds to step S06, assuming that the driver's seat side wiper arm 110 is in the vicinity of the A-pillar 12, otherwise the process proceeds to step S05.

<Step S05: Turbulence Suppression Control Execution>
The plasma actuator control unit 310 executes turbulence suppression control for suppressing turbulence generated around the wiper device 100 by interference of traveling wind with the wiper device 100.
The turbulent flow suppression control will be described in detail later.
After that, the series of processing ends (returns).

<Step S06: Negative pressure formation control execution>
The plasma actuator control unit 310 causes the arm upper surface plasma actuator 200 provided on the driver's seat side wiper arm 110 to generate an air flow F with the A pillar 12 side as the upstream and the center side in the vehicle width direction as the downstream.
At this time, the output of the arm upper surface plasma actuator 200 is the maximum output.
As a result, a negative pressure region N having a pressure lower than that of the surrounding atmosphere is formed in the vicinity of the surface portion of the windscreen 20 between the driver's seat side wiper arm 110 and the A pillar 12.
After that, the series of processing ends (returns).

<Step S07: Plasma Actuator Stop>
The plasma actuator control unit 310 stops the operation of each plasma actuator.
After that, the series of processing ends.

Next, the above-described turbulent flow suppression control (step S05) will be described in more detail.
FIG. 7 is a flowchart showing turbulent flow suppression control in the rectifying device of the first embodiment.
Hereinafter, each step will be described in order.

<Step S11: Wind velocity distribution on the wind screen>
The plasma actuator control unit 310 estimates the flow velocity distribution of the traveling wind W near the surface portion of the windscreen 20 based on the vehicle speed of the host vehicle detected by the vehicle speed sensor 311.
For example, the direction of the traveling wind W in each part of the wind screen 20 and the relative flow velocity with respect to the vehicle body can be held in advance as a map read from the vehicle speed.
Thereafter, the process proceeds to step S12.

<Step S12: Arm-traveling wind relative air flow velocity calculation>
The plasma actuator control unit 310 obtains, from the wiper device control unit 330, information on the position, moving direction, and speed of the driver's side wiper arm 110.
The plasma actuator control unit 310 calculates the relative velocity of the traveling wind W with respect to the arm upper surface plasma actuator 200 provided on the driver side wiper arm 110 using the flow velocity distribution of the traveling wind W estimated in step S11.

The traveling wind W usually flows into the lower end portion of the wind screen 20 from the front hood 30 side, and flows along the wind screen 20 in the direction of rising to the roof 11 side.
When the driver's seat side wiper arm 110 is drawn once and then reverses and returns from the A pillar 12 side to the cowl portion 50 side, the traveling wind W collides with the normal driver's seat side wiper arm 110 from the front side in the traveling direction It becomes.
In this case, the relative velocity of the traveling wind W in the air flow generation direction of the arm upper surface plasma actuator 200 is a value obtained by adding the velocity of the traveling wind W and the velocity of the driver seat side wiper arm 110.

On the other hand, when the driver's seat side wiper arm 110 is extended from the cowl 50 side to the A pillar 12 side, the relative velocity of the traveling wind W in the air flow generation direction of the arm upper surface plasma actuator 200 is driven from the speed of the traveling wind W It is a value obtained by subtracting the speed of the seat side wiper arm 110.
When the velocity of the traveling wind W is larger than the velocity of the driver's seat side wiper arm 110, the traveling wind W flows from the cowl 50 side to the A pillar 12 side based on the arm upper surface plasma actuator 200 (driver's seat) The traveling wind W overtakes the side wiper arm 110) to provide a trailing wind.
On the other hand, when the speed of the traveling wind W is smaller than the speed of the driver's side wiper arm 110, the traveling wind W flows from the A pillar 12 side to the cowl portion 50 side with reference to the arm upper surface plasma actuator 200. It will be in the state of
After the relative velocity of the traveling wind W with respect to the arm upper surface plasma actuator 200 is calculated, the process proceeds to step S13.

<Step S13: Driver side wiper arm moving direction determination>
The plasma actuator control unit 310 determines the moving direction of the driver's side wiper arm 110.
If the driver's seat side wiper arm 110 is moving from the cowl 50 side to the A-pillar 12 side, the process proceeds to step S14, and if it is moving in the reverse direction, the process proceeds to step S16.

<Step S14: Determination of Backwind Condition>
The plasma actuator control unit 310 determines, based on the calculation result in step S12, whether or not the traveling wind W is passing the arm upper surface plasma actuator 200.
If it is a tailwind state, the process proceeds to step S16. Otherwise, the process proceeds to step S15.

<Step S15: Control of air flow formation on the cowl side>
The plasma actuator control unit 310 controls the formation of a cowl side air flow that generates an air flow F flowing from the driver side wiper arm 110 to the cowl unit 50 side by the arm upper surface plasma actuator 200 of the driver side wiper arm 110.
After that, the series of processing ends (returns).

<Step S16: Pillar Side Airflow Formation Control>
The plasma actuator control unit 310 performs pillar side air flow formation control for generating an air flow F flowing from the driver side wiper arm 110 to the A pillar 12 side by the arm upper surface plasma actuator 200 of the driver side wiper arm 110.
After that, the series of processing ends.

FIG. 8 is a view showing a state where traveling wind collides with the driver's seat side wiper arm which is a comparative example of the present invention.
In the comparative example, portions substantially common to those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.
The driver's seat side wiper arm 110 of the comparative example is different from the first embodiment in that the arm upper surface plasma actuator 200, the arm pillar side plasma actuator 200A, and the arm cowl side plasma actuator 200B are not provided.

In FIG. 8, the driver's seat side wiper arm 110 is moving from the A-pillar 12 side to the cowl 50 side, and the traveling wind W flows in from the front side in the direction of travel of the driver's seat arm 110. (Same in Figure 9)
As shown in FIG. 8, when the traveling wind W collides with the driver's seat side wiper arm 110 from the cowl 50 side, the traveling wind which has passed around the end face portion 113 where the traveling wind W collides and above the upper surface portion 111 Around the end face 112 to be rolled up, a region is formed in which the turbulent flow accompanied by the vortex is recirculated.
When such turbulent flow adheres to the windscreen 20, it causes air resistance and aerodynamic noise to deteriorate.

FIG. 9 is a diagram showing the state of the driver's side wiper arm during the pillar side air flow formation control in the rectifying device of the first embodiment.
As shown in FIG. 9, during execution of the pillar side air flow formation control, the arm upper surface plasma actuator 200 forms an air flow F spouting from the driver seat side wiper arm 110 to the A pillar 12 side.
The strength (flow velocity) of the air flow F is set to increase according to the increase of the relative flow velocity of the traveling wind W with respect to the driver's seat side wiper arm 110 (component of the arm upper surface plasma actuator 200 in the air flow F direction).
For example, when the vehicle speed increases and the flow velocity of the traveling wind W increases, the flow velocity of the air flow F is also set to increase.
Further, focusing on the position of the driver's seat side wiper arm 110, the relative velocity of the traveling wind W tends to increase in the middle part within the swing range, so the flow velocity of the air flow F is also set to increase.

On the other hand, in the area near the cowl section 50, the traveling wind W is hard to directly hit the driver's seat side wiper arm 110 due to the rectification effect by the rear end of the front hood 30, and in the area near the A pillar 12 Since the angle between the longitudinal direction of the wiper arm 110 and the direction of the traveling wind W is relatively small (the traveling wind W flows substantially along the driver's seat side wiper arm 110), turbulent flow is less likely to occur.
In such a state, since the necessity of obtaining the rectification effect by the arm upper surface plasma actuator 200 is relatively low, the air flow F can be weakened or the arm upper surface plasma actuator 200 can be stopped.

Further, at the time of execution of the pillar side air flow formation control, the arm pillar side plasma actuator 200A generates an air flow Fa in a direction away from the wind screen 20.
Such an air flow Fa interferes with the air flow F formed by the arm upper surface plasma actuator 200, and gives the air flow flowing from the driver side wiper arm 110 to the A pillar 12 side a velocity component in a direction away from the windscreen 20 Have.
At this time, the arm cowl side plasma actuator 200B generates an air flow Fb in the direction of spraying toward the wind screen 20 side.
Such an air flow Fb deflects a part of the traveling wind W colliding with the end face portion 113 on the cowl portion 50 side to the wind screen 20 side, passes through the gap between the driver's seat side wiper arm 110 and the wind screen 20 It has a function of guiding to flow toward the pillar 12 side.

Further, in the case of performing the cowl-side air flow formation control, the air flow generation direction of each plasma actuator may be reversed (reversed) with respect to the above-described pillar-side air flow formation control.
That is, the arm upper surface plasma actuator 200 forms an air flow F spouting toward the cowl portion 50, the arm cowl side plasma actuator 200B generates an air flow Fb in a direction away from the windscreen 20, and the arm pillar side plasma actuator 200A The air flow Fa in the direction of blowing to the wind screen 20 side is generated.

The control described above relates to each plasma actuator of the driver side wiper arm 110, but the blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D provided in the driver side blade holder 130 are also shown in FIGS. Control substantially similar to 7 is performed.
FIG. 10 is a diagram showing a driver's seat side blade holder state during pillar side air flow formation control in the rectifying device of the first embodiment.
At the time of execution of the pillar side air flow formation control, the blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D both form the air flows Fc and Fd to be ejected from the driver seat side blade holder 130 to the A pillar 12 side. Do.
Further, at the time of execution of the cowl side air flow formation control, the air flow generation directions of the blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D are both reversed.

Hereinafter, the operation of the rectifier of the first embodiment will be described in time series.
FIG. 11 is an external perspective view showing a state in which the wiper device is in the stored state in the vehicle having the rectifying device of the first embodiment.
In FIG. 11, both the driver's seat side wiper arm 110 and the passenger's seat side wiper arm 120 of the wiper device 100 are located at the end on the front hood 30 side in the swing range.
The traveling wind W formed during traveling of the vehicle flows from the front side to the rear side of the vehicle body along the upper surface of the front hood 30, and then rises along the surface of the windscreen 20. A part of the traveling wind W flows while spreading outward in the vehicle width direction, and flows from the A pillar 12 side to the front door glass 14 side.
As shown in FIG. 11, when the wiper device 100 is in the stored state, the traveling wind W bounced up at the rear end of the front hood 30 does not substantially interfere with the wiper device 100, and the wind screen 20 is Each plasma actuator is in a stopped state because it flows to the side.

FIG. 12 is an external perspective view showing a state immediately after the driver's seat side wiper arm or the like starts moving to the A-pillar side in the vehicle having the rectifying device of the first embodiment.
The driver's seat side wiper arm 110 and the passenger's seat side wiper arm 120 are pivoted counterclockwise in FIG.
In the example shown in FIG. 12, the flow velocity of the traveling wind W is faster than the moving velocity of the arm upper surface plasma actuator 200 of the driver side wiper arm 110, and the plasma actuator control unit 310 controls the pillar side air flow formation control. Running.
The arm upper surface plasma actuator 200 of the driver's side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver's side blade holder 130, and the blade holder cowl side plasma actuator 200D are air flows F, Fc, Fd spouting to the A pillar 12 side, respectively. Generate.

FIG. 13 is an external perspective view showing a state where the driver's seat side wiper arm or the like moves to the A-pillar side and is in the middle part of the swing range in the vehicle having the rectifying device of the first embodiment.
Also in the state shown in FIG. 13, the plasma actuator control unit 310 executes pillar side air flow formation control as in FIG.
The arm upper surface plasma actuator 200 of the driver's side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver's side blade holder 130, and the blade holder cowl side plasma actuator 200D are air flows F, Fc, Fd spouting to the A pillar 12 side, respectively. The flow velocity of each air flow F, Fc, Fd is increased more than the state shown in FIG. 12 according to the position change of the driver's side wiper arm 110.

FIG. 14 is an external perspective view showing a state where a driver's seat side wiper arm or the like is in the vicinity of a turning point closest to the A-pillar side in a vehicle having the rectifying device of the first embodiment.
In the state shown in FIG. 14, the plasma actuator control unit 310 executes negative pressure formation control.
The arm upper surface plasma actuator 200 of the driver's side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver's side blade holder 130, and the blade holder cowl side plasma actuator 200D are air currents F jetted to the side opposite to the A pillar 12 side. , Fc, Fd are generated.
Thus, a negative pressure region N in which the air pressure is lower than the atmospheric pressure is formed between the driver's seat side wiper arm 110, the driver's seat side blade holder 130, and the A-pillar 12.
After the driver's seat side wiper arm 110 and the passenger's seat side wiper arm 130 reach the end of the swing range, the turning direction is reversed to start the movement from the A pillar 12 side to the cowl portion 50 side.

FIG. 15 is an external perspective view showing a state in which the driver's seat side wiper arm or the like is moved toward the cowl portion in the vehicle having the rectifying device of the first embodiment and is in the middle part of the swing range.
In the state shown in FIG. 15, the plasma actuator control unit 310 resumes the pillar-side air flow formation control.
The arm upper surface plasma actuator 200 of the driver's side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver's side blade holder 130, and the blade holder cowl side plasma actuator 200D are air flows F, Fc, Fd spouting to the A pillar 12 side, respectively. Generate.
In this case, since the driver's seat side wiper arm 110 etc. travels against the traveling wind W, the relative flow velocity of the traveling wind W based on the driver's seat side wiper arm 110 becomes high.
Therefore, the airflows F, Fc, and Fd are further increased as compared with the state shown in FIG.

FIG. 16 is an external perspective view showing a state immediately before the driver's seat side wiper arm or the like returns to the cowl portion in the vehicle having the rectifying device of the first embodiment.
Also in the state shown in FIG. 16, the plasma actuator control unit 310 executes pillar side air flow formation control as in FIG.
The arm upper surface plasma actuator 200 of the driver's side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver's side blade holder 130, and the blade holder cowl side plasma actuator 200D are air flows F, Fc, Fd spouting to the A pillar 12 side, respectively. The flow velocity of each of the air flows F, Fc, Fd is reduced as compared with the state shown in FIG. 15 in accordance with the change in position of the driver's side wiper arm 110.

According to the first embodiment described above, the following effects can be obtained.
(1) When the traveling wind W flows around the driver's seat side wiper arm 110, the driver's seat side blade holder 130, etc., the plasma actuators 200, 200A, 200B, 200C, 200D suppress the generation of turbulent flow. By generating the air flows F, Fa, Fb, Fc, and Fd, it is possible to prevent the deterioration of the air resistance and the aerodynamic noise due to the turbulent flow.
(2) When the driver's seat side wiper arm 110, the driver's seat side blade holder 130, etc. swing, the plasma actuator 200 or the like generates an air flow F in a direction not against the traveling wind W flowing along the surface of the windscreen 20. As a result, the occurrence of turbulent flow is suppressed to reduce the recirculation region causing air resistance, and even if turbulent flow is generated, it is blown away from the driver side wiper arm 110, the driver side blade holder 130, etc. By keeping the reattachment position to the windscreen 20 away, it is possible to appropriately prevent the deterioration of the air resistance and the aerodynamic noise.
(3) The above-described effect can be reliably obtained by generating the air flow F or the like which is jetted in the downstream direction of the traveling wind W when the driver's seat side wiper arm 110 and the driver's seat side blade holder 130 are used as a reference. it can.
(4) In the middle part of the swing range of the driver side wiper arm 110, the flow velocity of the air flow F or the like generated by the arm upper surface plasma actuator 200 or the like when it is near the lower end of the windscreen 20 (near the cowl 50). By controlling the speed of the driver's seat side wiper arm 110 and the driver's seat side blade holder 130 to receive a relatively strong traveling wind W, and the turbulence suppression effect can be It is possible to enhance the effects described above appropriately.
(5) The turbulence generated by deflecting the air flow F generated by the arm upper surface plasma actuator 200 to have a velocity component in a direction away from the windscreen 20 by the arm cowl side plasma actuator 200B and the arm pillar side plasma actuator 200A. The flow can be blown away in a direction away from the windscreen 20, and the above-described effect can be promoted by making the reattachment position on the windscreen more distant.
(6) By guiding the traveling wind W colliding directly against the driver's seat side wiper arm 110 with the arm pillar side plasma actuator 200A and the arm cowl side plasma actuator 200B between the driver's seat side wiper arm 110 and the windscreen 20 Water and the like wiped to the A-pillar 12 side by the blade B can be prevented from crossing the A-pillar 12 and coming around to the side of the vehicle body, and the front door glass 14 and the side view mirror 15 can be prevented from being soiled.
(7) By generating the air flow F by the plasma actuator 200 or the like, it is possible to generate the air flow with good response by a simple configuration having no movable part, and the above-mentioned effect can be obtained surely.

Second Embodiment
Next, a second embodiment of a rectifier to which the present invention is applied will be described.
In each embodiment to be described below, the same reference numerals are given to portions substantially common to the previous embodiment, the description is omitted, and the difference will be mainly described.
The rectifying device of the second embodiment is characterized in that turbulent flow separation control described below is performed instead of the negative pressure formation control in the rectifying device of the first embodiment.
FIG. 17 is an external perspective view showing a state where a driver's seat side wiper arm or the like is in the vicinity of a turnaround point closest to the A-pillar side in a vehicle having the rectifying device of the second embodiment.

In the turbulent flow separation control shown in FIG. 17, the arm upper surface plasma actuator 200 of the driver side wiper arm 110, the blade holder pillar side plasma actuator 200C of the driver side blade holder 130, and the blade holder cowl side plasma actuator 200D are A pillars, respectively. The air flow F, Fc, Fd which blows off to the 12 side is generated.
At this time, the output of each plasma actuator can be substantially maximized.

  According to the second embodiment described above, in addition to the effects substantially the same as the effects of the first embodiment described above (except those related to negative pressure formation control), the disturbance generated in the vicinity of the wiper device 100 By separating the flow from the vehicle body and spraying it outwards in the vehicle width direction, the turbulent flow is separated from the vehicle body, and the turbulent flow reattaches to the front door glass 14 etc. immediately after the A pillar 12 to deteriorate air resistance and aerodynamic noise. Can be prevented.

Third Embodiment
Next, a third embodiment of a rectifier to which the present invention is applied will be described.
The rectification device of the third embodiment is characterized in that the number of plasma actuators is reduced to simplify the device configuration.
FIG. 18 is a cross-sectional view of the driver's seat side blade holder in the rectifying device of the third embodiment.
FIG. 18 shows a cross section of a portion corresponding to FIG. 4 in the first embodiment.
In the third embodiment, a blade holder upper surface plasma actuator 200E described below is provided instead of the blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D in the first embodiment.
The blade holder upper surface plasma actuator 200E is attached to the surface of the end portion 131, and is capable of generating an air flow in a direction substantially parallel to the surface of the windscreen 20.

Also, in the driver's seat side wiper arm 110, the blade holder pillar side plasma actuator 200C and the blade holder cowl side plasma actuator 200D may be omitted for simplification of the device.
In the third embodiment described above, rectification around the wiper device 100 can be performed with a simpler configuration than the first embodiment and the second embodiment.

Fourth Embodiment
Next, a fourth embodiment of the rectifier to which the present invention is applied will be described.
FIG. 19 is a cross-sectional view of the driver's seat side wiper arm in the rectifying device of the fourth embodiment.
FIG. 19 shows a cross section of a portion corresponding to FIG. 2 in the first embodiment. (Same in FIG. 20 described later)
As shown in FIG. 19, in the fourth embodiment, a recess 114 formed in a stepped manner on the wind screen 20 is provided in a region on the end face 113 side of the upper surface 111 of the driver seat side wiper arm 110. ing.
The upper surface portion 111 and the concave portion 114 are connected by the inclined surface portion 115 in which the end surface portion 112 side is inclined in the direction of separating from the wind screen 20 with respect to the end surface portion 113 side.
The sloped portion 115 is provided in the vicinity of the central portion in the width direction of the driver's seat side wiper arm 110 (the direction in which the end surfaces 112 and 113 are separated).

In the fourth embodiment, the arm upper surface plasma actuator 200 is provided on the upper surface of the recess 114.
The air flow F1 ejected from the arm upper surface plasma actuator 200 toward the cowl portion 50 flows in a straight manner substantially in parallel with the surface of the recess 114 and the surface of the wind screen 20.
On the other hand, the air flow F2 emitted by the arm upper surface plasma actuator 200 toward the A-pillar 12 collides with the inclined surface 115 and is deflected to give a velocity component in a direction away from the wind screen 20.

According to the fourth embodiment described above, when a single plasma actuator is used to reverse the generation direction of the air flow, it is possible to generate an air flow having different speed components in the normal direction of the windscreen 20. .
For example, according to the configuration of the fourth embodiment, when the pillar side air flow formation control is performed, the air flow F2 is deflected by the inclined surface 115 to blow away the turbulent flow in the direction away from the wind screen 20, and the turbulent flow is The point of reattachment to the screen 20 can be kept away.

Fifth Embodiment
Next, a fifth embodiment of the rectifier to which the present invention is applied will be described.
FIG. 20 is a cross-sectional view of the driver's seat side wiper arm in the rectifying device of the fifth embodiment.
As shown in FIG. 20, in the fifth embodiment, a recess 116 is formed in the center in the width direction of the upper surface portion 111 of the driver's side wiper arm 110 and is formed to be recessed toward the wind screen 20.
The main portion of the recess 116 is formed in a flat plate shape substantially parallel to the upper surface portion 111.
The end portions on the end surface portions 112 and 113 side of the concave portion 116 are connected to the upper surface portion 111 via the slope portions 117 and 118, respectively.
The inclined surface portions 117 and 118 are inclined with respect to the upper surface portion 111 such that the end surface portions 112 and 113 are separated from the wind screen 20 with respect to the recessed portion 116 side.

In the fifth embodiment, the arm upper surface plasma actuator 200 is provided on the upper surface of the recess 116.
The air flow F1 emitted from the arm upper surface plasma actuator 200 toward the cowl portion 50 collides with the slope 118 and is deflected, and is given a velocity component in a direction away from the wind screen 20 side.
The air flow F2 emitted by the arm upper surface plasma actuator 200 toward the A-pillar 12 collides with the slope 117 and is deflected, and is given a velocity component in a direction away from the wind screen 20 side.

  According to the fifth embodiment described above, bi-directional air flow ejected toward the cowl 50 and the A-pillar 12 with a single plasma actuator is skewed in the direction away from the wind screen 20. The reattachment point of the turbulent flow formed around the wiper device 100 can be made more distant.

(Modification)
The present invention is not limited to the embodiments described above, and various modifications and changes are possible, which are also within the technical scope of the present invention.
(1) The configurations of the rectifying device and the vehicle on which the rectifying device is mounted are not limited to the embodiments described above, and can be changed as appropriate.
For example, the number, arrangement, and operating direction of the arms of the wiper device can be changed as appropriate, and the present invention is also applicable to a wiper device having a single arm configuration or a wiper device having a plurality of wiper arms having different swinging directions. It is possible to apply.
(2) The cross-sectional shapes of the wiper arm and the blade holder in the embodiment are an example, and the present invention can be applied to wiper devices having different cross-sectional shapes.
(3) In the embodiment, each plasma actuator generates the air flow in the direction perpendicular to the longitudinal direction of the wiper arm and the blade holder, but generates the air flow in the direction inclined to the longitudinal direction of the wiper arm etc. You may For example, in a region where air resistance or the like caused by traveling wind is most deteriorated, the air flow generation unit such as a plasma actuator may be disposed such that the direction of the traveling wind and the direction of the air flow are substantially along.

DESCRIPTION OF SYMBOLS 1 vehicle 10 compartment 11 roof 12 A pillar 13 front side door 14 front door glass 15 side view mirror 20 wind screen 30 front hood 40 front fender 50 cowl portion 100 wiper device 110 driver's seat side wiper arm 111 top surface portion 112, 113 end surface portion 114 recessed portion 115 sloped portion 116 recessed portion 117, 118 sloped portion 120 passenger side wiper arm 130 driver side blade holder 131 projecting end portion 132, 133 sloped portion B blade R rail 140 passenger side blade holder 200 arm upper surface plasma actuator 200A arm pillar side Plasma Actuator 200B Arm Cowl Side Plasma Actuator 200C Blade Holder Pillar Side Plasma Actuator 200D Blade Holder cowl side plasma actuator 200E blade holder upper surface plasma actuator 210 dielectric 220 upper electrode 230 lower electrode 240 insulator PS power supply P plasma discharge F air flow 310 plasma actuator control unit 311 vehicle speed sensor 320 drive power supply unit 330 wiper control unit 331 wiper motor 332 wiper Position sensor

Claims (12)

A windscreen provided in the cabin of the vehicle,
A wiper arm pivoting about an axis of rotation provided adjacent to an end of the windscreen;
And a blade holder attached to the wiper arm and holding a wiper blade that wipes the window according to the swing of the wiper arm.
An air flow generating unit provided on at least one of the wiper arm and the blade holder;
A control unit configured to generate, in the air flow generation unit, an air flow in a direction to suppress the influence of turbulent flow caused by traveling wind flowing around the air flow generation unit when the wiper arm is operated. The air flow generating portion is provided at an end of at least one of the wiper arm and the blade holder on the opposite side to the wind screen side, and the relative movement direction of the air flow generating portion along the surface of the wind screen and with respect to the vehicle body The flow straightening device according to claim 1, wherein an air flow having a velocity component parallel to the flow direction is generated. The control unit causes the air flow generation unit to generate an air flow flowing to the downstream side of the traveling air, when the air flow generating unit is moving with the traveling air as the opposing wind. Rectification device. The control unit is configured to move the air flow generation unit to the air flow generation unit when the air flow generation unit moves as a trailing wind and the flow velocity of the traveling air to the vehicle body is slower than the speed of the air flow generation unit to the vehicle body. The air flow which flows into the upper stream side is generated. The rectification device according to claim 2 or 3 characterized by things. The control unit is configured to move the air flow generation unit to the air flow generation unit when the air flow generation unit moves as a trailing wind and the flow velocity of the traveling air to the vehicle body is faster than the speed of the air flow generation unit to the vehicle body. The air flow which flows downstream is generated. The rectifier according to any one of claims 2 to 4. The rotary shaft of the wiper arm is provided near the lower end of the windscreen,
The control unit controls the flow velocity of the air flow generated by the air flow generation unit to be faster than when the wiper arm is in the vicinity of the lower end portion of the windscreen in the middle of the swing range of the wiper arm. The rectifier according to any one of claims 2 to 5, characterized in that. The rectifier according to any one of claims 2 to 6, wherein the air flow generated by the air flow generation unit has a velocity component in a direction away from the surface of the windscreen. It is provided at the downstream end of the air flow generated by the air flow generation portion of the wiper arm or the blade holder, and has a downstream auxiliary air flow generation portion generating an air flow having a velocity component in a direction away from the windscreen. The rectifier according to any one of claims 2 to 7, characterized in that: It has an upstream auxiliary air flow generation unit provided at the upstream end of the air flow generated by the air flow generation unit of the wiper arm or the blade holder and generating an air flow having a velocity component in a direction approaching the windscreen. The rectifier according to any one of claims 2 to 8, characterized in that At least a part of the air flow generation unit is provided in the blade holder;
One end of the swing range of the blade holder is disposed in the vicinity of a pillar of a vehicle,
The control unit generates an air flow in the air flow generation unit such that a negative pressure region is formed between the blade holder and the pillar when the blade holder approaches the pillar. The rectifier according to any one of claims 1 to 9. At least a part of the air flow generation unit is provided in the blade holder;
One end of the swing range of the blade holder is disposed in the vicinity of a pillar of a vehicle,
The flow control device according to any one of claims 1 to 9, wherein the control unit generates an air flow flowing toward the pillar when the blade holder approaches the pillar. The air flow generating unit is a plasma actuator having a pair of electrodes disposed with a dielectric interposed therebetween and a power supply for applying an alternating voltage to the electric power. The rectifier as described in a term.

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