JPH084647A - Wind power generation device - Google Patents

Abstract

PURPOSE:To provide a wind power generation device which can generate power even by soft wind irrespective of blowing direction. CONSTITUTION:A hollow rotary shaft 10 is stood perpendicularly. A plurality of blades 20 are installed on an upper stage 11 of the rotary shaft. A power generation device 30 is installed on a lower stage 12 of the rotary shaft 10. The power generation device 30 is composed of magnets 31 which are cylindrically arranged around the lower stage 12 of the rotary shaft 10 with their N poles and S poles alternately positioned and rotated interlockingly with the rotary shaft 10, and a coil 32 in which a conductor is snaked oppositely to a lengthwise direction of the magnet 31 around an outer periphery of the magnets 31. A lower edge and the upper edge of the lower stage 12 of the rotary shaft 10 is connected to each other by a duct 50. A wind power generation unit 51 is arranged in the duct 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wind turbine generator capable of generating power even with a slight wind regardless of the wind direction.

[0002]

2. Description of the Related Art In a power generator, a conductor cuts a magnetic flux to generate an electric current, and an alternating current is generally obtained from a mechanical rotating force. In a small power generator, magnetic flux is created by a permanent magnet, and an armature coil formed by bending a conductor into a rectangular shape is rotated. However, in a large-sized power generator, the armature coil is fixed and the magnet is rotated due to connection and structural reasons.

Generally, hydraulic power, thermal power, and nuclear power are used to rotate the magnet. However, in recent years, from the viewpoint of protection of the natural environment and the like, a wind power generator using wind power is being developed. Most of the conventional wind turbine generators are propeller types installed at a high place by a support tower and provided with a directional tail.

[0004]

A propeller type wind turbine generator is one in which a propeller rotates due to wind force and a magnet rotates due to the rotating force. Therefore, there is a problem that the magnet does not rotate in a slight breeze with a wind speed of 7 (m / s) or less, and power cannot be generated. If you make the propeller large so that it can rotate even in a breeze, the propeller support tower will rise,
Structural problems also arise. Further, since the propeller is made to face the wind direction by the tail fin, it is difficult to follow the instantaneous change in the wind direction.

Therefore, an object of the present invention is to provide a wind turbine generator capable of generating power even in a slight wind regardless of the wind direction.

[0006]

[Means for Solving the Problems] A first means for achieving the above object is a rotary shaft provided upright in the vertical direction and provided with a hollow pipe portion, and a large number of rotary shafts attached to the upper stage portion of the rotary shaft. It is a wind power generator characterized by comprising a blade and a generator rotated by the blade.

A second means for achieving the above object is a rotary shaft provided upright in the vertical direction and provided with a hollow tube portion, a large number of blades attached to the upper stage of the rotary shaft, and the rotary shaft. The permanent magnets having N poles and S poles alternately arranged in a cylindrical shape around the lower step portion and rotating in conjunction with a rotation axis, and the permanent magnets facing the outer circumference of the permanent magnets where a magnetic field is created, in the lengthwise direction of the permanent magnets. And a coil having a conducting wire meandering.

A third means for achieving the above object is
The wind turbine generator according to the first or second means is a wind turbine generator characterized in that a power generator unit is arranged in a hollow pipe portion or a gas flow path continuous with the hollow pipe portion.

Further, a fourth means for achieving the same object is provided with a hollow tube portion having an opening and a wind guide plate radially provided around the hollow tube portion. The wind power generator is characterized in that a power generation unit is arranged in a gas flow path continuous with the pipe portion.

A fifth means is the wind turbine generator according to any one of the first to fourth embodiments, wherein the hollow pipe portion or the gas flow path continuous to the hollow pipe portion is formed by one or two or more ducts. And a wind power generation unit is installed in the duct.

A sixth means for achieving the above object is
In the wind turbine generator according to any one of the first to fifth aspects, a part or all of the hollow pipe part or a gas flow path continuous with the hollow pipe part is arranged inside the outer wall, and the hollow pipe part or the hollow pipe part The end of the gas flow path continuous with the pipe portion is open in the outer wall, and an annular gas flow path is formed between the outer wall and the hollow pipe portion or the gas flow passage continuous with the hollow pipe portion. The wind power generator is characterized in that

The seventh means, which is a further improvement of the sixth means, is characterized in that the hollow pipe portion or the gas flow path continuous to the hollow pipe portion is opened toward the wind power generation unit. It is a wind power generator.

Further, an eighth means for achieving the above object is, in the wind turbine generator according to any one of the first to seventh aspects, covered with a large number of blades or air guide plates above the center of the lower surface. The wind power generation device is characterized in that a roof having a conical body protruding from the above portion toward the upper step of the hollow pipe portion is provided.

The ninth means, which is an improvement of the eighth means, is
A wind turbine generator characterized in that the upper surface of the roof described in the eighth means is covered with a solar cell.

[0015]

According to the first means, the blade rotates regardless of the wind direction and the wind force, and the rotation of the blade rotates the generator to generate electricity. Further, since the wind that hits the blades flows in the rotation shaft, an air flow can be generated in the rotation shaft. Further, according to the second means, the rotation shaft also rotates due to the rotation of the blade, and the permanent magnet rotates to generate a rotating magnetic field. Therefore, the coil around the permanent magnet relatively cuts off the magnetic flux, and power is generated.

Further, according to the third means, in addition to the power generation by the rotation of the blade, a part or all of the wind hitting the blade is introduced into the hollow portion of the rotary shaft of the blade. And this wind flows through the gas flow path which connects through a rotating shaft, and power generation is performed by a power generation unit. Therefore, according to the third means, the wind force is used without waste.

According to the fourth means, the wind hits the air guide plate and is guided into the hollow pipe portion, and the wind is collected to generate a strong air flow in the hollow pipe portion. Further, in the present wind power generator, since the power generation unit is installed in the hollow pipe portion or in the gas flow path continuous with the hollow pipe portion, the power generation unit is activated by the above-described airflow to generate power.

Further, according to the fifth means, the air flow flowing through the hollow pipe portion or the like flows through the duct and is recovered and returns to the hollow pipe portion or the like again. Therefore, the wind circulates in the gas flow path, and power is generated until the energy is consumed.

The sixth means is to construct a gas flow path between the outer wall and the hollow tube portion instead of the duct. According to the wind turbine generator of the present invention, the wind discharged from the hollow pipe portion and the like flows through the gap between the outer wall and the hollow pipe portion and is returned to the hollow pipe portion and the like again. Therefore, as in the case of the fifth means, the wind circulates in the gas flow path, and power is generated until the energy is consumed.

In the seventh means, since the end of the hollow pipe portion or the like is open toward the wind power generation unit, the wind emitted from the hollow pipe portion or the like is blown directly to the wind power generation unit. Can be attached. Therefore, power is also generated by the wind power generation unit.

According to the eighth and ninth means, not only the roof is protected from rain, but also the air flown between the blade and the roof is guided into the hollow pipe portion by the cone protruding in the center of the lower surface. Thus, a flow of air is created from the upper part to the lower part of the rotating shaft. According to the ninth means, standby power can be secured by the solar cell.

[0022]

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic perspective view showing the basic configuration of the embodiment. FIG. 2 is a front sectional view showing the basic configuration of the embodiment. FIG. 3 is a sectional view taken along the line AA of FIG.

The basic structure of the present wind power generator is that a hollow rotary shaft 10 is erected in the vertical direction and the upper stage 1 of the rotary shaft 10 is provided.
A large number of blades 2 (only 4 are shown in the figure for simplicity)
0 is attached radially, and the generator 30 is attached to the lower stage portion 12 of the rotary shaft 10. The rotary shaft 10 employed in this embodiment has a hollow interior and a tubular shape. The top of the rotary shaft 10 has an annular shape, but a large number of slits 13 are provided in the vertical direction in the area below it.

One of the blades 20 has, for example, an arcuate shape in a plan view, and one long side has an upper step portion 1 of the rotary shaft 10.
The wind that hits the blades 20 is attached to the slit 1
It is made to be introduced into the upper stage portion 11 of the rotary shaft 10 from between three. The blade 20 is mounted between the slits 13 of the rotary shaft 10, and when the wind hits the blade 20, the blade 20 receives a rotational force, while the wind flows along the surface of the blade 20,
It is guided to the slit 13. That is, in the wind turbine generator of this embodiment, the blade 20 also functions as a wind guide plate. It should be noted that the slits 13 may be reinforced with rings 14 at several places.

A dome-shaped roof 40 is covered above a large number of blades 20, and a cone 41 is attached to the lower side of the center of the roof 40 as shown in FIG. Blade 20 and roof 40
The air that has flowed in between
0 into the upper stage portion 11 of the rotary shaft 10 lower stage portion 12
Creates an air flow to. Therefore, the wind hitting the blades 20 flows into the lower step portion 12 of the rotary shaft 10 between the slits 13 of the upper step portion 11 of the rotary shaft 10 or from the opening of the top surface of the rotary shaft 10. The roof 40 also functions as a rain shield,
By covering the upper surface with the solar cell 42, it is possible to secure standby power.

The lower portion 12 of the rotary shaft 10 to which the generator 30 is attached is a complete tubular body except for the attachment portion of the duct 50 described later. The generator is, for example, Japanese Patent Application Laid-Open No. 4-46540 and Japanese Patent Application Laid-Open No. 5-32 which the present application has previously disclosed.
It is desirable to apply the configuration disclosed in Japanese Patent No. 8648. That is, the generator 30 is provided with the overhanging member 34 (see FIGS. 2 and 3) on the outer peripheral surface of the tubular body, and further overhangs the overhanging member 3.
4 has a U-shaped planar permanent magnet 31
Is arranged. Therefore, the rotation of the rotary shaft 10 also rotates the permanent magnet 31. U-shaped permanent magnet 31
One of the convex portions is an N pole and the other convex portion is an S pole, and a magnetic field is generated between the two poles. However, as the rotating shaft 10 rotates, a rotating magnetic field whose magnetic flux changes near the surface of the permanent magnet 31 is able to make.

The circumference of the permanent magnet 31 in which the rotating magnetic field is generated is surrounded by a coil 32 in which one conductor wire is meandered at a narrow interval. The conducting wire is opposed to the permanent magnet 31 in the vertical direction in parallel, and is folded back at both ends of the permanent magnet 31 into a double-sided or a double-sided shape. The spacing between the conductors is equal to the spacing between the poles of the permanent magnet 31 as shown in FIG. Such a coil 32
Is fixed in a groove formed on the inner peripheral surface of the cylinder 33. In the generator used in this embodiment, the coil is made by folding back the conducting wire, and therefore the length of the connecting portion 35 of the conducting wire is short. The crossover portion 35 is a portion that originally does not contribute to power generation, and the generator 30 employed in the present embodiment has high power generation efficiency because the crossover portion 35 is short.

The power generator 30 is mainly configured as described above, and the auxiliary power generator is configured as follows. That is, the wind power generation unit 51 is installed in the gas flow path formed by the lower part 12 of the rotating shaft 10. The wind power generation unit 51 has a propeller attached to the rotary shaft 10 of the rotor, and the propeller is rotated by the air flow. Further, the lower stage portion 12 of the rotary shaft 10 is circulated so that the air flowing into the lower stage portion 12 of the rotary shaft 10 circulates.
One or a plurality of ducts 50 that circulate from the lower end edge 15 to the upper end edge 16 are connected. 1 or 2 in each duct 50
A small wind power generation unit 51 is installed at the location. Further, as shown in FIG. 2, a valve 52 is attached to an arbitrary portion of each duct 50 so that the duct 50 is exhausted when the wind pressure is strong. Since the lower stage 12 of the rotary shaft 10 rotates on the duct 50, the thrust bearing 55 is interposed between the rotary shaft 10 of the lower stage 12 and the duct 50.

The present invention is configured as described above, and a power generation method will be described next. Since the wind enters the concave portions of the blades 20, the blades 20 rotate regardless of the wind direction, and even if the wind speed is a light wind of about 1.5 (m / s). Then, the rotating shaft 1
At 0, the upper part 11 and the lower part 12 rotate together, and the permanent magnets 31 arranged around the lower part 12 also rotate. The coil 32 arranged so as to face the permanent magnet 31 is in a state of relatively moving in the magnetic flux in which the N pole and the S pole are alternately changed instantaneously. Therefore, an alternating current is generated in the coil 32 according to Fleming's right-hand rule.

The wind that has rotated the blades 20 is guided to the cone 41 from the lower side of the dome-shaped roof 40, or directly enters the inside of the rotary shaft 10 along the blades 20 and from the upper stage portion 11. Create an air flow to the lower part 12. Therefore,
Air passes through the lower step portion 12 from between the slits 13 of the upper step portion 11 of the rotating shaft 10. At that time, the wind power generation unit 51 provided in the lower stage portion 12 of the rotary shaft 10 operates to generate power. Further, the wind goes further downstream and flows into the duct 50. Then, the wind power generation unit 5 in the duct 50
The propeller 1 rotates, and power is generated separately from the coil 32.

The wind that rotates the propeller in the duct 50 is returned to the upper end of the rotary shaft 10 of the lower stage 12 when the wind is light, and circulates in the rotary shaft 10 of the lower stage 12 and the duct 50. Therefore, the wind that has entered the rotary shaft 10 continues to circulate until the kinetic energy is lost, and power is generated. When the wind pressure is strong, the valve 52 is opened and exhausted.

In parallel with these power generations, power is also generated by the solar cell 42 coated on the upper surface of the roof 40. Since the power generation by the solar cell 42 is performed even in a windless state, it is particularly advantageous when the wind speed is 1.5 (m / s) or less.

The present invention is not limited to the above-mentioned embodiment, and the design can be changed within the scope of the present invention. For example, the blades 20 may be bowl-shaped instead of arch-shaped, and the planar shape of the permanent magnet 31 may be I-shaped instead of U-shaped. As the permanent magnet 31, a U-shaped permanent magnet is prepared in advance,
This may be appropriately arranged and assembled, but by compressing and laminating gear-shaped thin iron plates, a number of axial grooves are provided on the surface to form a member having a concave-convex cross-sectional shape in the plane direction,
The permanent magnet 31 may be replaced by magnetizing portions of the member corresponding to the teeth of the gears so that adjacent teeth have different polarities. The modified example of the permanent magnet is also applicable to the generator 30 and the wind power generation units 73 and 80 of the embodiments described later.

The above embodiments have disclosed that the wind is applied to the blades 20 to rotate the blades to generate electricity, and the winds are collected by the blades 20 to generate electricity also by the air flow. That is, it can be said that the above-described wind turbine generator is mainly configured to generate electricity by rotating the blades 20, and to supplementarily generate electricity using the airflow. However, conversely, it is possible to limit the function of the blades 20 to the function of collecting the wind and generate electric power only by the wind collected by the blades 20, or it is possible to adopt an intermediate structure between the two. An embodiment in which the function of the blade 20 is limited to the function of collecting wind will be described below.

FIG. 4 is a front view showing the appearance of the embodiment. FIG. 5 is a schematic perspective view showing the basic configuration of the embodiment. FIG. 6 is a front sectional view showing the basic structure of the embodiment. FIG. 7A is a sectional view taken along line BB of FIG.
(B) is a detailed view of FIG. The wind turbine generator of this embodiment is surrounded by a cylindrical outer wall 60. Outer wall 60
Has an open top and is covered with a roof 40 as in the previous embodiment. A solar cell is attached to the roof 40.

A large number of slits 61 are provided on the upper side surface of the outer wall 60. The lower half of the outer wall 60 is in a substantially sealed state, but an opening 63 is provided in the lowermost portion, and a check valve 65 is attached to the opening 63. The inside of the outer wall 60 is configured as shown in FIGS. 5 and 6. That is, inside the outer wall 60, there is a partition plate 66 in the middle portion in the height direction, and the inside is largely divided into two upper and lower rooms.

In the upper chamber, a hollow tubular portion 67 having a hollow interior and having a tubular shape is erected vertically.
The hollow tube portion 67 is provided with the slits 13. The hollow tube portion 67 is provided with a large number of blade-shaped air guide plates 68 (only four are shown in the figure for simplicity). The shapes of the hollow tube portion 67 and the blade-shaped air guide plate 68 used in this embodiment are exactly the same as those of the blade 20 and the rotary shaft 10 described in the previous embodiment. However, in the previous embodiment, the blade 20 rotates together with the rotary shaft 10, but in the present embodiment, both are integrally attached to the outer wall 60 via the partition plate 66 and cannot rotate. The points are different. In the present embodiment, the vane-shaped air guide plate 68 and the partition plate 66 make the air flow in any direction downward in the center and create a spiral wind flow.

When the eyes are moved to the lower stage in the outer wall 60, a gas flow path 70 continuous from the hollow pipe portion 67 is suspended in the lower stage. The lower end of the gas flow path 70 is open. Further, an opening 72 is provided on the side surface of the gas flow path 70 and at a position close to the partition plate 66. And gas flow path 7
At 0, a wind power generation unit 73 is arranged. Regarding the wind power generation unit 73 adopted in this embodiment, the applicant of the present invention has previously disclosed Japanese Patent Laid-Open No. 4-46540 and Japanese Patent Laid-Open No. 32-32864.
This is an application of the one disclosed in Japanese Patent Publication No. 8, and a type that can be called a fuselage wind tunnel type is adopted. That is, in the wind power generation unit 73, as shown in FIGS. 6 and 7, the fan 77 is directly inserted into the tube body 76 forming a part of the gas flow path 70. A large number of permanent magnets are attached to the peripheral surface of the fan 77 as shown in FIG. A coil (only a part of the conducting wire is shown in FIG. 7) 78 is arranged around the tubular body 76. The structure of the coil 78 is the same as that of FIG. 1, and is formed by folding back one conducting wire. The conductor spacing is equal to the pole pitch of the permanent magnet.

Immediately below the opening of the gas flow path 70, downward vortex wind hits the bottom to create horizontal vortex wind flow in all directions. A large diameter wind power generation unit 80 is arranged in this portion. In the wind power generation unit 80, the coil 83 is annularly arranged along the inner surface of the outer wall 60, and the fan 82 is rotatably arranged inside the coil 83. A permanent magnet is attached to the fan 82 similarly to the wind power generation unit 73. In the lower portion of the fan 82 in FIG. 6, there is a bearing 85 provided for smoothing the rotation of the fan 82.

In the power generator of this embodiment, wind blows from the slit 61 of the outer wall 60 and the upper opening of the outer wall 60 to the outer wall 60.
Get in. Then, the wind is collected in the center along the blade-shaped air guide plate 68, enters the hollow tube portion 67 from the slit 13, and a downward spiral airflow is generated. Then, this air flow passes through the gas flow path 70, and at this time, the wind power generation unit 73
The fan 77 of is rotated. Since a permanent magnet is attached to the peripheral surface of the fan 77 and a coil 78 is arranged outside the tubular body 76, electromotive force is generated in the coil 78 to generate electricity. In this embodiment, since the coil has a short length at the crossing portion, the power generation efficiency is higher than that of a normal turtle coil. Wind power generation unit 73
The wind that has passed through is jetted downward from the open end of the gas flow path 70. Then, this wind becomes a horizontal and vortex wind, and directly abuts on the fan 82 of the wind power generation unit 80, and the fan 82 is rotated by this wind force.

Therefore, the wind power generation unit 7 described above is used.
Power generation is performed in the same manner as 3. Further, the wind that hits the fan 82 and bounces, or the wind that has passed through the fan 82 and then returned through the gap goes up the gas flow passage 86 constituted by the gap between the inner surface of the outer wall 60 and the outer surface of the gas flow passage 70, and From the opening 72 of the flow path 70, it returns to the inside of the gas flow path 70 and again becomes downward spiral wind force. However, when the wind power is low or too strong, the wind power may be discharged from the outer periphery of the bottom through the valve without being reused. That is, in the wind turbine generator of the present embodiment, the gap between the inner surface of the outer wall 60 and the outer surface of the gas flow passage 70 is the gas flow passage 86. From the gas flow passage 70, the gas flow passage 86 by the gap and the opening 72 are formed. Then, a series of gas channels connected in an annular shape is formed. Therefore, as in the previous embodiment, the wind circulates in these gas flow paths and repeats power generation until the energy is exhausted.

When the pressure inside the outer wall 70 rises excessively, the check valve 65 opens and the wind is released to the outside.
That is, when the outside wind is strong, the amount of air introduced into the outer wall 60 becomes excessive, the internal pressure rises, and the air flow in the gas flow path becomes rather stagnant. Therefore, the check valve 65 causes this adverse effect. To prevent.

In this embodiment, the wind power generation units 73, 8
Although the fuselage wind tunnel type is illustrated in FIG. 0, the propeller type as in the previous embodiment may be used. On the contrary, it is also possible to use the fuselage wind tunnel type wind power generation unit adopted in the present embodiment in the previous embodiment. Similarly, the inner surface of the outer wall 60 and the gas flow path 70 adopted in this embodiment are used.
Instead of the structure in which the gap on the outer surface of the gas flow path 86 is the gas flow path 86, the duct as in the previous embodiment may be applied, and conversely, the gas flow path 86 utilizing the inner surface of the outer wall 60 may be applied to the previous embodiment. It can also be used.

[0044]

EFFECTS OF THE INVENTION According to the present invention, it is possible to generate power regardless of the wind direction even in the case of a slight breeze. Therefore, it is possible to put wind power into practical use, not only effectively utilize resources but also reduce pollution. Can provide no clean energy.

Further, according to the wind power generator of the third to seventh aspects, the wind hitting the blades or the baffle plate is guided into the hollow tube portion to generate an air flow, and the air flow generates electricity. Therefore, in the wind turbine generator according to claims 3 to 7, the energy of the wind can be used without waste, and the power generation efficiency is high.

Further, in the wind power generator according to claim 9,
Preliminary power generation by a solar cell can be performed, and auxiliary power generation can be performed when the wind is weak, which has an effect of greatly contributing to the practical application of the wind power generator.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a basic configuration of an embodiment of the present invention.

FIG. 2 is a front sectional view showing the basic configuration of the embodiment of the present invention.

3 is a cross-sectional view taken along the line AA of FIG.

FIG. 4 is a front view showing the outer appearance of an embodiment of the present invention.

FIG. 5 is a schematic perspective view showing the basic configuration of the embodiment of the present invention.

FIG. 6 is a front sectional view showing the basic structure of the embodiment of the present invention.

7A is a sectional view taken along line BB of FIG. 6, and FIG.
[Fig. 3] is a detailed view of (a).

[Explanation of symbols]

 10 Rotating Shaft 11 Upper Stage 12 Lower Stage 15 Lower Edge 16 Upper Edge 20 Blade 31 Permanent Magnet 32, 78, 83 Coil 40 Roof 41 Cone 42 Solar Cell 50 Duct 51, 73, 80 Wind Power Unit 60 Outer Wall 67 Hollow Tube Part 68 Blade-shaped air guide plate 70 Gas flow path

Claims (9)

[Claims] 1. A rotary shaft vertically provided upright and having a hollow tube portion, a plurality of blades attached to the upper stage of the rotary shaft, and a generator rotated by the blades. A characteristic wind power generator. 2. A rotating shaft vertically provided upright and having a hollow tube portion, a large number of blades attached to the upper stage of the rotating shaft, and N poles and S poles around the lower stage of the rotating shaft. A permanent magnet that is alternately arranged in a cylindrical shape and rotates in conjunction with a rotation axis, and a coil in which a conductor wire that opposes the lengthwise direction of the permanent magnet meanders around the outer circumference of the permanent magnet that creates a magnetic field. A wind power generator. 3. The wind power generator according to claim 1 or 2, wherein the power generator unit is arranged in the hollow pipe portion or in a gas flow path continuous with the hollow pipe portion. . 4. A hollow pipe part having an opening, and a wind guide plate radially provided around the hollow pipe part, wherein power is generated in the hollow pipe part or in a gas flow path continuous with the hollow pipe part. A wind turbine generator characterized in that units are arranged. 5. The wind turbine generator according to any one of claims 1 to 4, wherein the hollow pipe portion or a gas flow path continuous with the hollow pipe portion is annularly connected by one or more ducts, and A wind turbine generator characterized in that a wind turbine generator unit is installed in the duct. 6. The wind turbine generator according to any one of claims 1 to 5, wherein a part or all of the hollow pipe portion or a gas flow path continuous with the hollow pipe portion is arranged in an outer wall, and is hollow. The end of the gas flow path continuous to the pipe part or the hollow pipe part is open in the outer wall, and an annular shape is formed between the outer wall and the hollow pipe part or the gas flow path continuous to the hollow pipe part. A wind turbine generator characterized in that a gas flow path is formed. 7. The wind turbine generator according to claim 6,
A wind turbine generator, wherein the hollow pipe portion or a gas flow path continuous with the hollow pipe portion is open toward the wind turbine generator unit. 8. The wind turbine generator according to any one of claims 1 to 7, which covers over a large number of blades or air guide plates and projects from the center of the lower surface toward the upper step of the hollow tube. A wind power generator having a roof having the above-mentioned cone. 9. A wind turbine generator characterized in that the upper surface of the roof according to claim 8 is covered with a solar cell.