JP2656898B2 - Wind direction adjustment device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind direction adjusting device used in a cooling and heating apparatus, and more particularly, to a wind direction in which when an external force acts on a wind direction adjusting blade, the external force is prevented from being transmitted to power generating means. It relates to an adjusting device.

[0002]

2. Description of the Related Art A wind direction adjusting device used for a heating device or a cooling device usually includes a wind direction adjusting blade, a driving motor, and a power for transmitting the rotational force of the driving motor to the blade.
The transmission member controls the direction of air flow.

As a practical example, a conventional wind direction adjusting device for an air conditioner is disclosed in Japanese Utility Model Publication No. 55-168140.

In the above-mentioned wind direction adjusting device, the rocking tables are fixed to a plurality of rocking vertical axes which are supported in parallel at appropriate intervals in the take-out port, and the other end of each rocking table is pivotally connected in a connecting rod shape. The connecting base is connected to a power source by interposing a mechanical power transmission device such as a crank device and the like, so that the connecting base can be swung by the rotation of the vertical axis. At the same time, the wind direction is adjusted to each of the swing shafts. It is formed by connecting plates so that the mounting angle can be adjusted.

[0005]

In the conventional wind direction adjusting device described above, when a rotational force is applied to the blade from the outside, the force is applied to the drive motor through a power transmission member such as a crank device. Is transmitted, the drive motor may be damaged, and the wind direction adjusting blade cannot maintain the adjusted angle.

Further, if this phenomenon occurs frequently, the life of the drive motor may be shortened, or the drive motor may be severely damaged.

[0007] Further, in the case of a heating device, high-temperature air flows from the inside of the heating device if a rotating external force acts on the blade so as to close the extraction port in a state where the blade opens the extraction port. It cannot be discharged, and there is a risk of damaging the internal equipment by overheating. In the case of cooling equipment, low-temperature air causes frost to form inside the equipment, deteriorating thermal efficiency. It is a factor.

SUMMARY OF THE INVENTION An object of the present invention, which has been made to solve the above-mentioned problems, is to provide a wind direction adjusting device for transmitting a rotational driving force of a drive motor to a wind direction adjusting blade.

Another object of the present invention is to prevent damage to the drive motor due to external force by preventing the rotation external force from being transmitted to the drive motor even if the rotation external force acts on the wind direction adjusting blade.

Another object of the present invention is to provide a highly reliable wind direction adjusting device, in which when the external rotating force applied to the wind direction adjusting blade is removed, the wind direction adjusting blade is restored to its original adjusted position. An apparatus is provided.

[0011]

The wind direction adjusting device according to the present invention comprises a power generating means for generating a rotational driving force;
Only when the power generating means is rotationally driven, the rotational driving force is transmitted to the wind direction adjusting blade, and when an external force is applied to the wind direction adjusting blade, the external force is not transmitted to the power generating means. Power transmission means.

Furthermore, it said power transmission means is rotated when the wind direction adjusting blade is rotated in one direction by an external force, the first rotary member and the air vent control blade is fixed when rotating in the opposite direction Due to external force, the second rotating member is fixed when rotating in the one direction and is rotated between the first and second rotating members when rotating in the opposite direction, and is located between the first and second rotating members. An elastic member having both ends coupled to the first and second rotating members, a bush sandwiched and fitted inside the elastic member, and a first and second rotation driving force of the power generating means. It is composed of a casing that transmits to members.

[0013] The first and second rotary members, with the same configuration,
At the center thereof, there is provided a shaft hole having one projection formed, and a pair of rotor blades and the like are extended on the outer peripheral edge so as to be opposed to each other.

[0014] a projection formed in the axial hole of the first rotating member,
The protrusions formed in the shaft hole of the second rotating member are located facing each other. One end of the casing is closed, and the other end has an open cylindrical shape. The first rotating member, the elastic member, and the second
A rotating member is arranged.

Furthermore, the casing is in a position facing each other of the inner peripheral edge has a pair of projections, accordingly rotor blades or the like of the first and second rotary members of the found pair of projecting portions of the casing They are arranged so that they cross each other around the center.

A small hole is formed on each one-side rotor of the first and second rotating members, and both ends of the elastic member are fitted into the holes and the like, whereby the first and second rotating members are fitted. The rotating member and the elastic member move in an interlocking manner in the casing.

[0017]

The drive shaft of the power generation means is connected to the outer surface of the closed end of the casing of the power transmission means constructed as described above, and the rotational driving force of the power generation means is transmitted to the power transmission means.

Furthermore, connected to said power transmitting means, is rotated by the rotational driving force generated from power generating means,
The wind direction adjusting blade shaft that adjusts the wind direction has a "D" -shaped cross-section that is partially cut in the length direction to a length that allows one end to enter the open interior of the casing. .

[0019] Thus, "D" end of the wind direction adjusting blade shaft having a shape of a cross section, a shaft hole or the like formed in the first and second rotary member is fitted to the elastic member positioned therebetween, It is inserted into the casing through the bush. At this time, the cut surface of the wind direction adjusting blade shaft described above is fitted into the projections protruding from the shaft holes of the first and second rotating members, and is joined. It is.

The other end of the air vent control blade shaft is coupled to the first air flow direction control blades have been fitted into air vent control blade shaft disc near the middle of the coupling hole formed in the circular plate, A connecting link connected to the second wind direction adjusting blade shaft is fitted. The connecting links may be provided in large numbers according to the number of wind direction adjusting blades. Therefore,
One power generating means can rotate a number of wind direction adjusting blades and the like.

[0021] Looking to guess the behavior of each member of the constructed wind direction adjusting device as as follows.

When the power generation means rotates in one direction, the casing of the power transmission means connected to the drive shaft of the power generation means rotates in that direction.

When the casing is rotated, a pair of protruding portions formed on the inner peripheral edge of the casing form a pair of first and second rotating members of the first and second rotating members, which face each other, with the protruding portions and the like as centers. , The rotating wings and the like placed in the rotation direction are rotated.

When one of the first and second rotating members is rotated, the first and second rotating members are connected to each other by an elastic member, so that they rotate integrally.

When the first and second rotating members are rotated, the projections formed in the shaft holes of the first and second rotating members push the cut surface of the wind direction adjusting blade shaft inserted in the shaft holes. , In the direction of rotation of the power generating means.

[0026] Here, the protrusion formed on the shaft hole of the rotary member, Wakashi, a pair of projections or the like of the casing, is rotated the first rotary member, formed in the axial hole of the second rotary member The formed protrusion rotates the wind direction adjusting blade shaft, and vice versa, the protrusion of the second rotating member is arranged to rotate the wind direction adjusting blade shaft.

[0027] Thus, airflow direction adjusting blade shaft is rotated in one direction by the power generating means, rotated and air flow direction control blade at a predetermined angle, so adjusting the wind direction.

On the other hand, any one of a number of air vent control blade, rotating external force acts, when the rotation the wind direction adjusting blade shaft in one direction, projection or the like of the first or the second rotary member Rotate only the protrusion located in the rotation direction in the other, while the other rotation member is fixed by the protrusion of the casing, the rotation member on which the protrusion is formed is aligned with the direction of the external rotation force. The casing is rotated to be separated from the pair of protrusions of the casing.

[0029] At the same time, the elastic member coupled to the first and second rotating member has one end remains is fixed a fixed other rotating member of the as support points, only the other end air vent control blade It is twisted and rotated by the rotation of one rotating member, which is rotated by the shaft, and absorbs the rotating external force.

In the above, the reason why the casing is not rotated by the external rotation force and the elastic member is twisted and rotated is that the elastic force of the elastic member is set to be smaller than the rotational driving force of the power generating means, so that the wind direction can be adjusted. This is because the elastic member is twisted to an angle corresponding to the external force by a rotational external force applied to the member, and absorbs the rotational external force.

Furthermore, if the rotational force is removed, the restoring force of the elastic member, airflow direction adjusting blade is to be restored to the original position.

[0032]

FIG. 1 is an exploded perspective view showing a wind direction adjusting device according to the present invention in a developed state. As shown in the drawings, the present invention is made up of the power generating means 1, the wind direction adjusting blade shaft 20, and the wind direction adjusting blade 10 formed by the stepping motor 70 and the drive shaft 71. The wind direction adjusting means 3 and the rotational driving force generated by the power generating means 1 are transmitted to the wind direction adjusting means 3, and the external rotational force applied to the wind direction adjusting means 3
The power transmission means 2 is configured not to be transmitted to the power transmission means.

The power transmission means 2 has a cylindrical casing 60 with one end closed and the other end open.
A first rotating member 50 which is sequentially arranged from the open inner rear of the casing 60;
0 and a second rotating member 30.

A bearing 61 is formed at the center of the outer surface of one end where the casing 60 is closed, and a pair of first and second protrusions 62 and 63 are formed on the inner peripheral edge of the opened cylinder.
Are formed in the axial direction so as to face each other.

[0035] is opened in the casing 60, the first rotating member 50 to be placed towards the deepest inner cylinder, at the disc shaped, have a shaft hole 53 for accommodating the air vent control blade axis 20 in its center And a pair of first and second rotors 51, 52 from opposite sides of the disk shape.
Is formed as an extension.

A coupling hole 54 is formed in the first rotary blade 51 for receiving and fixing the front end 43 of the elastic member 40 located between the first rotary member 50 and the second rotary member 30. And as shown in FIGS. 1 and 2,
In the shaft hole 53 of the first rotating member 50, the first and second wind direction adjusting blades 10, 10A and the like project in a right position when viewed from the open front surface of the casing 60 in a state in which the air outlet 11 is closed. Are formed to protrude.

[0037] The first rotating member 50 described above, second rotary member 30 which is made in the same shape, the axial hole 33 for housing a first airflow direction adjusting blade axis 20 in its center
And a pair of first and second rotating blades 31 and 32 are formed to extend from both sides of the disk shape facing each other.

[0038] Further, as in the first rotary member 50,
The first rotating blade 31 of the second rotating member 30 includes an elastic member 40.
The second rotating member 30 is provided with a coupling hole 34 for receiving and fixing the rear end 44 of the second rotating member 30 at a position facing the projection 55 formed in the shaft hole 53 of the first rotating member 50.
A protrusion 35 is formed on the left side of the shaft hole 33.

[0039] During the first and second rotary members 50, 30 of said, the first rotating member coupling hole 54 formed in the first rotary blade 51 of the 50, Mari its front end 43 is fitted, a second rotary The rear end 44 is fitted in the coupling hole 34 formed in the first rotor 31 of the member 30, and the first and second rotating members 50 and 30 are fitted.
An elastic member 40 in the form of a coil that is coupled to the elastic member 40 is arranged, and a bush 41 is fitted into the elastic member 40.

As shown in FIGS. 1 and 2,
The first wind direction adjusting blade 10 has one end connected to the first
The other end of the wind direction adjusting blade shaft 20 is cut in the length direction to a length corresponding to the depth of the open interior of the casing 60 to form a “D” -shaped cross section.

[0041] Therefore, portions forming the cutting surface 21 of the first airflow direction adjusting blade shaft 20, first and second rotary members 5
It is disposed inside the cylinder of the casing 60 through the shaft holes 53 and 33 of 0 and 30 and the bush 41 fitted inside the elastic member 40.

At this time, when looking at the open interior of the casing 60, the right side of the cut surface 21 of the first wind direction adjusting blade shaft 20 is formed by the projection 55 formed in the shaft hole 53 of the first rotating member 50. Is fixed, and the left side of the cut surface 21 is
The second rotation member 30 is fixed by a projection 35 formed in the shaft hole 33.

[0043] Further, as was shown in Figure 2,
A first disk 22 is fitted into the first wind direction adjusting blade shaft 20 at a point where the cut surface 21 ends, and
The disk 22A of the second wind direction adjusting blade shaft 20A having the same shape as the first wind direction adjusting blade shaft 20 is interconnected by the connecting link 23, so that the first wind direction adjusting blade shaft 20 is By the rotation, the second wind direction adjusting blade shaft 20A also rotates together.

[0044] Thus, by providing a large number of connecting links 23 as described above, it is possible to adjust the rotational angle of the plurality of air vent control blade by one of the power generating unit 1.

The drive shaft 71 of the power generating unit 1 includes a bearing portion 61 formed on the outer surface of the closed end of the casing 60
And connected.

[0046] Further, the first air flow direction control blade shaft 20 of the power transmission unit 2 is fitted into the first and second rotary members 50, 30 and the elastic member 40 are interconnected, the second airflow direction adjusting blade shaft 20A Are connected to each other by the connection link 23 so as to perform an interlocking movement.

FIG . 3 shows the first and second wind direction adjusting blades 1.
In a state where 0, 10A or the like closes the air outlet 11, the first and second rotating members 50, 30, the elastic member 40, and
FIG. 3 illustrates a state in which the first wind direction adjusting blade shaft 20 is disposed inside the casing 60.

The first rotating blade 51 of the first rotary member 50 is positioned to the left around the first projecting portion 62 of the casing 60, the first rotary blade 31 of the second rotary member 30, the first projecting portion It is located on the right side with respect to 62.

[0049] Further, the second rotating blade 52 of the first rotary member 50
Is located on the right side with respect to the second protrusion 63 of the casing 60, and the second rotor 32 of the second rotating member 30 is located on the left side with respect to the second protrusion 63.

[0050] That is, the first and second rotor blades 51 and 52 of the first rotary member 50 first and second rotary blades 31 and 32 of the second rotary member 30 is intended to be arranged mutually intersect .

The front end 43 of the elastic member 40 which is displayed by a dotted line is fitted to the first rotating member coupling hole 54 formed in the first rotary blade 51 of the 50, the rear end 44,
The first and second rotating members 50 and 30 are fitted into the coupling holes 34 provided on the first rotating blades 31 of the second rotating member 30.
, And are linked to make an interlocking movement.

[0052] Further, the first air flow direction control blade shaft 20, the projection 55 of the first rotary member 50 which is located on the right side of the cut surface 21 of the blade shaft 20, a second rotary member which is located on the left side of the cut surface 21 The protrusions 35 of the thirty rotate the left or right direction.

The process of adjusting the wind direction angle of the wind direction adjusting blade and the like by the wind direction adjusting device of the present invention configured as described above will be described in detail below.

FIG . 2 shows the first and second wind direction adjusting blades 1.
0, 10A and the like show a state in which the air outlet 11 is closed, and FIG. 3 is a sectional view taken along AA in FIG.

FIG . 4 shows that the drive shaft 71 is rotated by the rotational driving force of the stepping motor 70, and the power transmission means 2 and the first wind direction adjusting blade shaft 20 are rotated rightward by the angle α (“R”).
Direction).

The operation process will be described in detail. In the state of FIG. 2, the control unit (not shown) of the cooling / heating equipment
When a signal is sent to the stepping motor 70 so that the second wind direction adjusting blades 10, 10A and the like are rotated clockwise by an angle α (“R” direction), the stepping motor 70 is operated, and the drive shaft 71 rotates clockwise. , The casing 60 connected to the drive shaft 71 by the bearing 61 also
Will rotate to the right.

When the casing 60 rotates clockwise, the right side face 62A of the first protrusion 62 of the casing 60 pushes the left side face 31B of the first rotor 31 of the second rotating member 30, and at the same time, the second face of the casing 60 Left side surface 63B of protrusion 63
Is the right side surface 32A of the second rotating blade 32 of the second rotating member 30.
Is pressed, the second rotating member 30 rotates clockwise.

[0058] The first rotating member 50 by the elastic member 40,
The second rotating member 30 is connected to the second rotating member 30.
Is rotated right, the first rotating member 50 also rotates clockwise with the rotation of the elastic member 40.

[0059] Here, the rotation resistance force of the wind direction adjusting means 3,
Since the elastic force is set to be much smaller than the elastic force of the elastic member 40, the elastic member 40 is rotated rightward integrally with the first and second rotating members 50 and 30 without being twisted.

When the first rotating member 50 is rotated clockwise, the first rotating member 50 is moved to the position where the casing 60 shown in FIG.
Projection 55 formed on the right side of shaft hole 53 of rotating member 50
Pushes the cut surface 21 of the first wind direction adjusting blade shaft 20 to rotate clockwise, and the first wind direction adjusting blade 10 is rotated in the arrow direction (“X” direction) shown in FIG. Further, the second wind direction adjusting blade shaft 20A connected to the first wind direction adjusting blade shaft 20 by the connecting link 23 is also clockwise rotated, and the second wind direction adjusting blade 10A is also rotated in the direction like the first wind direction adjusting blade 10. Then, the blowing port 11 is opened by an angle corresponding to the designated rotation angle α.

In the state where the rotation angles of the first and second wind direction adjusting blades 10 and 10A are adjusted by the above-described operation, the first and second wind direction adjusting blades 10 and 1A are adjusted.
When an external rotation force acts on any one of 0A and the like, the external rotation force is not transmitted to the power generating means 1. However, when observing the operation of each member in this case, it is as follows. It is.

FIG . 5 shows that, when the power transmitting means 2 is rotated by the angle α and the wind direction adjusting means 3 is adjusted in angle, a rotating external force in the “Y” direction acts on the wind direction adjusting means 3 to cause the casing 60 to rotate. Inside, the first rotating member 50
Shows a state in which the lens is rotated left (“L” direction) by the rotation angle β.

As shown in FIG . 4, the power transmission means 2 is rotated by an angle α, and the first air direction adjusting blade 10
When a rotational external force acts in the "Y" direction, the first wind direction adjusting blade 10 is rotated in a direction to close the air outlet 11, and accordingly, the first wind direction adjusting blade shaft 20 is rotated left. .

[0064] Here, the rotational force is a first or second airflow direction adjusting blade 10,10A or the like, in order to forcibly rotated must overcome the elastic force of the elastic member 40.
Further, the elastic force of the elastic member 40 is designed to be smaller than the driving force for forcibly rotating the power generating means 1, and if an external rotating force exceeding the elastic force acts on the wind direction adjusting means 3, the power is increased. The elastic member 40 is torsionally rotated while the casing 60 directly connected to the generating means 1 is stopped.

[0065] That is, if the first air flow direction control blade shaft 20 be rotated left ( "L" direction), and the first rotating blade 31 of the second rotary member 30 and the second rotating blade 32 is, first, each casing 60
While being fixed by the second protrusions 62 and 63, the first
The projection 55 of the first rotating member 50 located on the right side of the cut surface 21 of the wind direction adjusting blade shaft 20 is pushed by the rotation of the cut surface 21 and is rotated left.

[0066] Therefore, while the second rotary member 30 is fixed, first rotation member 50 is rotated counterclockwise, accordingly, linked elastic member coupling hole 34 of the first rotary blade 31 of the second rotary member 30 While the rear end 44 of the first rotary member 50 is fixed, the front end 43 of the elastic member 40 connected to the coupling hole 54 of the first rotary wing 51 of the first rotary member 50 is rotated counterclockwise together with the first rotary member 50, and the rotational external force is applied. Will be absorbed.

[0067] That is, when only the first or the second rotating member 50, 30, either one of the members of the wind direction adjusting means 3 by rotating external force is rotated by the rotation driving force of the power generating unit 1, Elastic member 4 when wind direction adjusting means 3 is rotated
0 is rotated without torsional deformation, while the other end is rotated while the one end of the elastic member 40 is fixed and the other end is rotated by torsional rotation. Since the generating means 1 is not rotated, the stepping motor 70 can be protected.

[0068] Further, as shown in FIG. 5, first by rotating external force
When the rotation member 50 is rotated left by the angle β and the external rotation force is removed, the first rotation member 50 is rotated clockwise by the elastic restoring force of the elastic member 40, and the position shown in FIG. Thus, the wind direction adjusting blades 10 and 10A can maintain the original adjusted angle.

FIG . 3 shows that the elastic member 40 is
Is left side (“L” direction) or right side (“R” direction)
90 degrees, which is the maximum rotation angle that can be rotated.

[0070] That is, while the elastic member 40 left direction ( "L" direction) force for rotating the acts, the rear end 44 of the second rotary member 30 and the elastic member 40 is fixed, the elastic member 4
If the front end 43 of the first rotating member 50 is twisted and rotated and the first rotating member 50 is continuously rotated leftward, the first rotating blade 5 of the first rotating member 50 is rotated.
1 is rotated by 90 degrees, and is locked to the left side surface 63B of the second protrusion 63 of the casing 60. Further, the right side surface 52A of the second rotor 52 of the first rotating member 50 is The casing 60 is rotated by 90 degrees, and is locked on the right side face 62A of the first projecting portion 62 of the casing 60, so that the casing 60 cannot be further rotated.

[0071] the first or second air flow direction control blade 10, 10
A, etc., when a rotational external force is applied in the direction opposite to the direction described above, that is, in the “X” direction shown in FIG. While the one rotating member 50 and the front end 43 of the elastic member 40 remain fixed, the second rotating member 30 and the rear end 44 of the elastic member 40 are rotated rightward (R direction) and absorb the external rotational force. As a result, the rotational external force is not transmitted to the power generating means 1.

FIG . 6 is a cross-sectional view illustrating another embodiment of the present invention. FIG. 6 (A) shows the outer surface of the first rotating member 50 and the casing when the wind direction adjusting device of the present invention is operated. The first and second rotating members are provided to prevent the inner wall surface of the second rotating member 60 and the outer surface of the second rotating member 30 from coming into contact with the disk 22 installed on the first wind direction adjusting blade shaft 20. 50,
30 shows that round projections 56 and 36 are formed in the column direction on 30 and the like.

[0073] Further, FIG. 6 (B), when the first and second rotary members 50, 30 are rotated, both ends 4 of the elastic member 40
The rotating blades 51, 52, 3 of the first and second rotating members 50, 30, so that the inner and outer walls 3, 44 do not contact the inner wall surface of the casing 60 and the disk 22 of the first wind direction adjusting blade shaft 20.
1, 32, etc. are bent inward.

[0074]

As described above, the wind direction adjusting device of the present invention can rotate a wind direction adjusting blade or the like to a preferable and accurate angle with a simple structure, and can rotate the wind direction adjusting blade or the like. Even if an external force is applied, the external force is not transmitted to the stepping motor, so that the stepping motor is prevented from being damaged, its life is prolonged, and if the external force is removed, the wind direction adjusting blades and the like can be adjusted. The air-conditioning device of the present invention has the effect of improving the reliability of the air conditioner equipped with the wind direction adjusting device according to the present invention.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing a wind direction adjusting device according to the present invention in a developed state.

FIG. 2 is a side view showing a wind direction adjusting device of the present invention installed on one side of a blade.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a view showing a state in which a power transmission unit is rotated clockwise to a predetermined angle by an operation of a stepping motor.

5 is a drawing showing a state in which the power transmission means is rotated left as a result of an external rotating force acting as shown in FIG. 4;

FIGS. 6A and 6B are side views of a wind direction adjusting device illustrating another embodiment of the present invention.

[Explanation of symbols]

 Reference Signs List 10 First wind direction adjusting device blade 10A Second wind direction adjusting device blade 20 First wind direction adjusting blade shaft 30 Second rotating member 40 Elastic member 50 First rotating member 60 Casing 70 Stepping motor

Claims (4)

(57) [Claims] Power generating means for generating a rotational driving force; transmitting the rotational driving force to a wind direction adjusting blade only when the power generating means is rotationally driven; and when an external force is applied to the wind direction adjusting blade. , wind the external force is Ru made by power transmitting means which form so as not to be transmitted to the power generating means
A direction adjusting device, wherein the power transmission means is configured such that the wind direction adjusting blade is adapted to receive an external force.
If it rotates more in one direction, it will rotate,
A first rotating member fixed when rotating to: the wind
When the direction adjusting blade is rotated in one direction by an external force,
Fixed in the case of rotation, and rotated in the opposite direction
Between the second rotating member and the first and second rotating members.
And both ends thereof are connected to the first and second rotating members.
And an elastic member to be driven: a rotational driving force of the power generating means.
For transmitting the pressure to the first and second rotating members
And a wind direction adjusting device characterized by comprising: 2. The apparatus according to claim 1, wherein each of the first and second rotating members has a shaft hole formed with one protrusion, and a pair of rotating blades and the like are formed on the outer peripheral edge thereof so as to face each other. The wind direction adjusting device according to claim 1, wherein 3. The casing has a pair of protruding portions at positions facing each other on an inner peripheral edge thereof, and the first and second rotating members each include a pair of the protruding portions provided with the pair of rotating blades mounted on the casing. The wind direction adjusting device according to claim 1 , wherein the wind direction adjusting devices are arranged so as to cross each other around the portion. Elastic force according to claim 4, wherein said elastic member is characterized by being set smaller than the rotational driving force of the power generating means, air flow direction control apparatus according to claim 1.