JP2007103806A - Solar power generation equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide solar power generation equipment characterized in that it can be installed in a site where strong wind blows, in that a reduction of generation efficiency caused by a composition of excrement of bird or the like can be prevented, in that installation is easy to perform, and in that a variation of generation efficiency caused by season is less. <P>SOLUTION: The solar power generation equipment comprises a solar panel supporter 5a profiled in hexagonal prism, a solar panel 6 performing power generation by sunlight which is arranged in the side of the solar panel supporter 5a, and a lighting 4a consuming electric power generated by the solar panel 6. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a solar power generation apparatus that supplies electric power obtained by solar power generation to a load such as an illumination lamp.

2. Description of the Related Art Conventionally, solar power generation apparatuses that generate power using sunlight are known. This solar power generation device has been designed so that the panel surface of the solar panel is horizontal with respect to the ground in order to receive sunlight efficiently.
In addition, as a device for generating power using a solar panel, a proximity alarm device having a structure for performing solar power generation described in Patent Document 1 is known.
Japanese Patent Application Laid-Open No. 6-129597

However, in a conventional solar power generation device, a solar panel is installed at a high position of the solar power generation device in order to efficiently receive sunlight. Therefore, when a strong wind is blowing, there is a problem that the solar panel cannot withstand the wind pressure and may be damaged. Furthermore, lighting by solar panel power generation is useful in the event of a disaster such as a typhoon or an earthquake, but there is a problem that lighting cannot be used due to breakage, particularly when a storm such as a typhoon occurs.
In addition, since conventional solar power generation devices are installed so that the panel surface of the solar panel is horizontal with respect to the ground, a part of the solar panel is soiled by bird droppings and the power generation efficiency decreases. There was also a problem of doing.
In addition, the conventional solar power generation device was designed to increase the area of the solar panel with the ground in order to receive more sunlight, so it is difficult to carry the solar power generation device, There is a problem that a large space is required to install the photovoltaic power generation apparatus.
Moreover, in the conventional solar power generation device, since the solar panel was designed so as to face horizontally above the ground, there was a problem that the incident angle of sunlight changed depending on the season and the power generation efficiency fluctuated.

  The present invention has been made in view of the above circumstances, and its purpose is to be installed in a place where strong winds blow, can prevent a decrease in power generation efficiency due to accumulation of bird droppings, etc., and is easy to install. There is a need to provide a solar power generation device with little variation in power generation efficiency depending on the season.

  The present invention has been made to solve the above-mentioned problems. The invention according to claim 1 is provided with support means having a cylindrical or columnar shape and a side surface of the support means. A solar power generation device comprising: a solar power generation unit that performs power consumption; and a load that consumes the power generated by the solar power generation unit.

  The invention according to claim 2 is the photovoltaic power generator according to claim 1, wherein the shape of the cross section parallel to the bottom surface of the support means is a polygon or a circle.

  The invention according to claim 3 is the solar power generation device according to claim 1 or 2, characterized in that the area of the cross section parallel to the bottom surface of the support means is larger toward the lower side in the vertical direction.

  According to a fourth aspect of the present invention, there is provided a support means having a cylindrical or columnar shape and capable of controlling a tilt angle of a side surface, and solar light that is provided on a side surface of the support means and generates power by sunlight. The power generation means, the wind speed measurement means for measuring the wind speed, the first control means for controlling the inclination angle of the side surface according to the measurement result of the wind speed measurement means, and the power generated by the solar power generation means are consumed. It is the solar power generation device characterized by having a load to do.

  The invention according to claim 5 is the solar power generation device according to any one of claims 1 to 4, wherein the load is an illumination lamp.

  The invention according to claim 6 further includes a time measuring unit for outputting time, and a second control unit for turning on or off the illumination lamp based on the time output by the time measuring unit. It is a solar power generation device of Claim 5.

  Moreover, the invention described in claim 7 is a third illumination device that turns on or off the illumination lamp based on the illuminance measurement unit that measures the illuminance around the solar power generation device and the illuminance measured by the illuminance measurement unit. The solar power generation device according to claim 5, further comprising a control unit.

  The invention according to claim 8 further includes power storage means for storing the power generated by the solar power generation means, and the load consumes the power stored in the power storage means. The solar power generation device according to any one of claims 1 to 7.

  According to a ninth aspect of the present invention, there is provided a fourth control means for controlling the amount of electric power stored in the power storage means so as not to be not less than a predetermined upper limit value and not to be less than a predetermined lower limit value. The solar power generation device according to claim 8, further comprising:

In the present invention, the photovoltaic power generation apparatus is provided on the side surface of the support means having a cylindrical or columnar shape installed in a direction perpendicular to the ground, and the photovoltaic power generation means for generating power by sunlight, and the photovoltaic power generation The load which consumes the electric power generated by the means is provided.
As a result, the solar power generation means installed on the cylindrical side surface is not greatly affected by wind pressure even when strong winds are blowing, so the solar power generation means cannot withstand strong winds. It can be prevented from being damaged.
In addition, since the solar power generation means is installed on a cylindrical side surface installed in a direction perpendicular to the ground, it is difficult for bird droppings and garbage to accumulate, and the power generation efficiency of the solar power generation means decreases. Can be prevented.
Moreover, since the photovoltaic power generation means is installed on the cylindrical side surface installed in a direction perpendicular to the ground, it is possible to reduce labor and cost required for installing the photovoltaic power generation apparatus.
In addition, the solar power generation means is installed on a cylindrical side surface that is installed in a direction perpendicular to the ground, and the incident angle of sunlight does not change greatly depending on the season, so the power generation efficiency varies depending on the season. This can be prevented.

First, the solar power generation device according to the first embodiment of the present invention will be described.
FIG. 1 is a front view showing the configuration of the photovoltaic power generator according to this embodiment. This solar power generation device is supported by a base 1, and includes a lead storage battery box 2, a support column 3, an illumination lamp 4a (load), a solar panel support portion 5a (support means), and a solar panel 6 (solar power generation means). , Has a model 7.
The shaped object 7 has, for example, a shape such as an animal such as a bird or a cage, and is attached to the upper part of the solar panel support 5a in accordance with the installation location of the apparatus (a park or a residential area). It may also be a characteristic of the installation location (such as a city mark or a company mark that symbolizes the installation owner). This shaped object 7 may incorporate an illuminance sensor (illuminance measuring means), a timer (time measuring means), etc. for measuring the illuminance around the place where the photovoltaic power generation apparatus is installed. In addition, you may install an illumination intensity sensor and a timer in other places (inside the lead storage battery box 2 etc.), without incorporating in the molded article 7.
Note that the illuminance around the device is measured in a place where the illumination lamp is not directly irradiated.

  In the photovoltaic power generation apparatus according to the present embodiment, as an example, the height x1 of the lead storage battery box 2 is 1500 mm, and the length of the column 3 from the top of the lead storage battery box 2 to the bottom of the solar panel support 5a. x2 was 1500 mm, the length x3 of the solar panel support 6 was 1000 mm, and the height x4 of the illuminating lamp was 2800 mm. The height of the photovoltaic power generator was 4000 mm (= x1 + x2 + x3). A solar power generation device having a weight of 164 kg was used.

The base 1 is for fixing a solar power generation device perpendicularly to the ground, and has a rectangular flat plate shape.
The lead storage battery box 2 has a rectangular parallelepiped box shape and is provided on the base 1. The lead storage battery box 2 contains a lead storage battery (power storage means) and a controller (second to fourth control means) not shown. A lead storage battery is a secondary battery that can be repeatedly charged and discharged. The lead storage battery stores the electric power generated by the solar panel 6. Further, the lead storage battery supplies the stored electric power to the illuminating lamp 4a. In the present embodiment, a lead storage battery having a performance of 12V-50Ah is used.
The controller includes an overcharge prevention unit and an overdischarge prevention unit (not shown), and controls so that the amount of power stored in the lead storage battery does not exceed a predetermined upper limit value, and does not decrease below a predetermined lower limit value. .

  The controller also controls lighting and extinguishing of the illumination lamp 4a of the solar power generation device. As a pattern for controlling lighting and extinguishing of the illuminating lamp, a pattern that is turned on at a predetermined time (for example, 6:00 pm) by a timer and turned off at another predetermined time (for example, 6:00 am), When the illuminance around the device falls below the predetermined illuminance by a pattern that turns on when a predetermined time (for example, 6:00 pm) by the timer and turns off when the predetermined time elapses, or by an illuminance sensor It is possible to use a pattern that is turned on and turned off when a predetermined illuminance is exceeded. In addition, the illumination sensor turns on when the ambient illumination of the device falls below a predetermined illumination, and turns off after a predetermined time (for example, 12 hours) by a timer, or a predetermined time ( For example, in the pattern that turns on at 6:00 pm) and turns off when the illuminance sensor exceeds a predetermined illuminance, or in each of the patterns described above, after a predetermined time elapses from lighting (for example, after 6 hours) It is also possible to use a pattern in which the illumination lamp 4a is turned on with the illuminance lowered.

The column 3 is made of, for example, a pole, and is installed so that the central axis of the pole is parallel to the axis perpendicular to the ground. The support column 3 is coated with urethane resin after being subjected to antirust coating.
The illuminating lamp 4a lights up using the electric power stored in the lead storage battery. Here, 1.1 W × 4 super bright white LEDs (Laser Emitting Diodes) are used as the illumination lamp 4a. The illumination lamp 4a is lit for about 12 hours from sunset, for example.

FIG. 2A is a perspective view showing a partial configuration of the photovoltaic power generation apparatus according to the present embodiment. As shown in the figure, in this embodiment, an illuminating lamp having a flat structure is used as the illuminating lamp 4a. As the structure of the illuminating lamp, it is not necessary to use a structure having the structure shown in FIG. 2A, and a rectangular parallelepiped illuminating lamp 4b as shown in FIG. 2B or an illumination having another structure. A light may be used.
Further, the structure of the illuminating lamp may be a structure as shown in FIG. In FIG. 2C, the control box 8 is attached to the column 3. The control box 8 is provided with arms 9a to 9c to which illumination lights 4c to 4e are respectively attached. The control box 8 can control the shapes of the arms 9a to 9c and can control the lighting and extinguishing of the illumination lights 4c to 4e. Thereby, the irradiation lights of the illumination lamps 4 c to 4 e can be irradiated to an arbitrary position based on the control of the control box 8. In addition, although all white LED is used here as the illuminating lights 4c-4e, it is not limited to such a structure. For example, you may attach LED of different colors, such as blue, red, and green, to the illuminating lights 4c-4e, respectively.
Although the case where the three arms 9a to 9c are installed in the control box 8 has been described here, the present invention is not limited to such a configuration. For example, one, two, or four or more arms may be installed in the control box 8.

  FIG. 3 is an illuminance distribution diagram when the illumination light is turned on by the illumination lamp 4a (FIG. 2A) according to the present embodiment. This figure has shown the illumination distribution of the circumference | surroundings of the place where the solar power generation device is installed. An illuminance of 20 Lx is obtained near the illuminating lamp 4a of the solar power generation device. Further, when the direction in which the illuminating lamp 4a is installed is the front direction with respect to the axis of the column 3 of the photovoltaic power generation apparatus, the front direction distance x5 = 4000 mm, the left direction distance x6 = 4000 mm, and the right direction In the range of the distance x7 = 4000 mm, an illuminance of about 1 Lx is obtained.

Returning to FIG. 1, the solar panel support portion 5 a has a hexagonal column shape, and is attached to the column 3 so that the central axis coincides with the central axis of the column 3.
The solar panel 6 receives sunlight and generates electric power by converting light energy into electric energy. The electric power generated by the solar panel 6 is sent to the lead storage battery and stored. In this embodiment, the 15W solar panel 6 is attached to each of the six side surfaces of the solar panel support 5a having a hexagonal column shape.

FIG. 4A is a plan view showing the configuration of the solar panel support portion 5a of the solar power generation device according to the present embodiment. Moreover, FIG.4 (b) is a side view which shows the structure of the solar panel support part 5a of the solar power generation device by this embodiment.
In this embodiment, the solar panel support part 5a whose distance x8 (FIG. 4 (a)) between the hexagonal vertices which oppose is 356 mm was used. The solar panel support 5a has six rectangular side surfaces m11 to m13 and m14 to m16 (not shown). A solar panel 6 is attached to each of these side surfaces m11 to m16.
In addition, in this embodiment, although the solar panel installation part 5a which installs the solar panel 6 has demonstrated the case where it has the shape of a hexagonal column, other polygonal columns, such as a quadrangular column and an octagonal column, are described. It can also be used.

Moreover, as a solar panel support part, it can also be set as the structure of the solar panel support part 5b as shown to Fig.5 (a), (b). Fig.5 (a) is a top view which shows the structure of the solar panel support part 5b. Moreover, FIG.5 (b) is a side view which shows the structure of the solar panel 5b.
The solar panel support 5b has a cylindrical shape and has a side surface m21. For example, a film-type solar panel 6 is attached to the side surface m21 along a curved surface.
In addition, although FIG. 4 demonstrated the case where the cross section of the side surface of the solar panel support part 5a was a polygon, FIG. 5 demonstrated the case where the cross section of the side surface of the solar panel support part 5b was circular, like this It is not limited to a simple configuration. Moreover, as a shape which can endure a wind pressure, other shapes, such as a barrel shape, may be sufficient if a solar panel can be attached to the side surface of a solar panel support part, for example.

Moreover, the structure of the solar panel support part 5c as shown to Fig.6 (a), (b) can also be used as a solar panel support part. Fig.6 (a) is a top view which shows the structure of the solar panel support part 5c. Moreover, FIG.6 (b) is a side view which shows the structure of the solar panel 5c.
The solar panel support 5c has a hexagonal truncated pyramid shape and has side surfaces m31 to m36 having a trapezoidal shape. The solar panels 6 are attached to the side surfaces m31 to m36, respectively.

In addition, in description of FIG. 6 (a), (b), although the case where the thing of the shape of a hexagonal frustum was used as the solar panel support part 5c was demonstrated, it is not limited to such a structure, It is also possible to use a solar panel support portion in the shape of another polygonal frustum such as a quadrangular frustum or an octagonal frustum, or a solar panel support portion in the shape of a truncated cone.
Moreover, you may use a solar panel support part which has a structure where the cross-sectional area of a horizontal direction is large with respect to the ground so that it may become perpendicular | vertical downward. For example, as the shape of the solar panel support portion, a polygonal pyramid shape such as a quadrangular pyramid or an octagonal pyramid, or a conical shape may be used.

  As described above, the solar panel support section having a side surface perpendicular to the ground surface by using a solar panel support section having a polygonal truncated cone or truncated cone shape (see FIG. 4). Compared with the case where a solar panel is attached to the solar cell, sunlight can be received efficiently.

Next, the solar power generation device according to the second embodiment of the present invention will be described. Since the configuration of the photovoltaic power generation apparatus according to this embodiment is the same as that in FIG. 1, detailed description thereof will be omitted.
The solar power generation device of the present embodiment is different in that it further includes an anemometer (wind speed measuring unit), an anemometer, and a control unit (first control unit) and a mechanism of the solar panel support unit is different. This is different from the photovoltaic power generation apparatus according to the first embodiment. The anemometer measures the wind speed at the place where the photovoltaic power generator is installed.

The solar panel support unit according to the present embodiment is transformed into the first state and the second state based on the control of the control unit. Since the 1st state is the same as the shape (refer FIG. 4) of the solar panel support part by 1st Embodiment, the detailed description is abbreviate | omitted.
Fig.7 (a) is a top view which shows the structure of the 2nd state of the solar panel support part by this embodiment. Moreover, FIG.7 (b) is a side view which shows the structure of the 2nd state of the solar panel support part by this embodiment.
Assuming that the angle at which the axis perpendicular to the ground and the side surfaces m11 to m16 of the solar panel support section intersect is the tilt angle θ, the tilt angle θ in the first state of the solar panel support section (FIG. 4). Was 0 degrees. In contrast, in the second state of the solar panel support (FIG. 7), the positions of the side surfaces m11 to m16 are such that the inclination angle θ is a predetermined angle θA (0 degree <θA ≦ 90 degrees). It is controlled by the control unit.
In order to control the inclination angle θ of the solar panel in this embodiment, for example, a flat plate having the same area as the rectangle is superposed on the six rectangular side surfaces m11 to m16 of the solar panel support 6a. The six sides of the hexagonal top surface of the optical panel support part and the upper short side of each flat plate are locked with a hinge or the like, and the opening angle of the hinge or the like is changed by a hydraulic pump or the like to change the inclination angle θ This can be realized by controlling the above. The opening angle of a hinge or the like is controlled by a hydraulic pump or the like controlled by a controller. A solar panel is attached to the surface of each of the six flat plates.
In addition, as a mechanism for moving each flat plate from the solar panel support portion 6a, the hinge is locked with a hinge and the opening angle is adjusted with a hydraulic pump. Shall not be.

FIG. 8 is a flowchart showing the processing of the control unit of the photovoltaic power generator according to the second embodiment of the present invention. First, a control part measures the wind speed of the place in which the solar power generation device is installed with the anemometer (step S1). And a control part determines whether the measurement result of an anemometer is smaller than predetermined | prescribed wind speed (step S2). As the predetermined wind speed, for example, a wind speed for determining strong wind is set.
When the measurement result of the anemometer is equal to or higher than a predetermined wind speed, that is, when strong wind is blowing at the installation place of the solar power generation device, the control unit places the solar panel support unit in the first state (FIG. 4). Control) (step S3).
On the other hand, when the measurement result of the anemometer is less than a predetermined wind speed, that is, when strong wind is not blowing at the installation place of the solar power generation device, the control unit moves the solar panel support unit to the second state ( (See FIG. 7) (Step S4).

In the solar power generation device according to the second embodiment of the present invention, when the strong wind is blowing, the side surfaces m11 to m16 of the solar panel support part are closed (tilt angle θ = 0). Therefore, it can prevent that a solar panel support part and a solar panel are destroyed by the wind pressure of a strong wind.
In addition, when strong wind is not blowing, the side surfaces m11 to m16 of the solar panel support part are opened (so that the inclination angle θ = θA), so that the solar panel can more efficiently perform sunlight. Can be received, and the power generation efficiency can be improved.
In the description of FIG. 8, the case has been described in which the shape of the solar panel support portion assumes the two states of the first state (FIG. 4) and the second state (FIG. 7). It is not something. For example, the inclination angle θ of the side surfaces m11 to m16 of the solar panel support portion may be continuously changed according to the wind speed measured by the anemometer.
Further, the wind direction may be measured by an anemometer, and the side surface that opens and closes may be controlled according to the wind direction. That is, it is possible to perform control so that the side face that receives a strong wind pressure is closed and the other side face is opened.
Further, the solar power generation apparatus may be provided with a communication function to obtain weather information, and the side surfaces m11 to m16 of the solar panel instruction unit may be opened and closed based on the weather information.

The solar power generation devices according to the first and second embodiments of the present invention described above can be installed, for example, in urban areas, parks, agricultural roads, forest roads, and the like.
In the solar power generation apparatus according to the first and second embodiments of the present invention, an LED that can be driven with a small amount of power is used as the illumination lamp 4 even when the power obtained by the power generation by the solar panel is small. Therefore, the illumination lamp 4 can be turned on.
In addition, the solar panels installed on the sides of the cylindrical or columnar solar panel support are not greatly affected by wind pressure even when strong winds are blowing. It is possible to prevent breakage without being able to withstand. For example, the solar power generation apparatus according to the first embodiment of the present invention can be used without damaging the solar panel even when a wind with a wind speed of 60 m / s is blowing.
In addition, since the solar panel is installed on the side of the cylindrical solar panel support that is installed in a direction perpendicular to the ground, birds cannot stop on the solar panel, and bird droppings and garbage It becomes difficult to accumulate. Therefore, it can prevent that the power generation efficiency of a solar panel falls.

In addition, since the solar panel is installed on the side surface of the cylindrical or columnar solar panel support section installed in a direction perpendicular to the ground, the solar panel is arranged so that it can receive more sunlight. It is easier to carry and install than a photovoltaic power generation device, and labor and cost when installing the photovoltaic power generation device can be reduced.
In addition, the solar panel is installed on the side of the cylindrical solar panel support that is installed in a direction perpendicular to the ground, and the balance between the incident angle of sunlight and the irradiation time does not vary greatly depending on the season. Therefore, it is possible to prevent the power generation efficiency from changing according to the season.
In the above embodiment, the illumination lamp is used as the power consumption load. However, the load may be a monitoring camera or a display device (such as an electric bulletin board), and is not limited to the illumination lamp.

  The embodiment of the present invention has been described in detail with reference to the drawings. However, the specific configuration is not limited to this embodiment, and includes designs and the like that do not depart from the gist of the present invention.

It is a front view which shows the structure of the solar power generation device by the 1st Embodiment of this invention. It is a perspective view which shows the structure of a part of solar power generation device by this embodiment. It is an illuminance distribution figure at the time of lighting with the illumination lamp 4a (FIG.2 (a)) by this embodiment. It is the top view and side view which show the structure of the solar panel support part 5a of the solar power generation device by this embodiment. It is the top view and side view which show the structure of the solar panel support part 5b of a solar power generation device. It is the top view and side view which show the structure of the solar panel support part 5c of a solar power generation device. It is the top view and side view which show the structure of the 2nd state of the solar panel support part by the 2nd Embodiment of this invention. It is a flowchart which shows the process of the control part of the solar power generation device by this embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Base, 2 ... Lead acid battery box, 3 ... Support | pillar, 4a-4e ... Illuminating lamp, 5a-5c ... Solar panel support part, 6 ... Solar panel, 7 ... molded object, 8 ... control box, 9a-9c ... arm

Claims (9)

A support means having a cylindrical or columnar shape;
A solar power generation means provided on a side surface of the support means for generating power by sunlight;
A load that consumes the power generated by the solar power generation means;
A solar power generation device comprising:   The photovoltaic power generation apparatus according to claim 1, wherein a shape of a cross section parallel to the bottom surface of the support means is a polygon or a circle.   3. The photovoltaic power generation apparatus according to claim 1, wherein an area of a cross section parallel to the bottom surface of the support means is larger toward a lower side in the vertical direction. A support means having a cylindrical or columnar shape and capable of controlling the inclination angle of the side surface;
A solar power generation means provided on a side surface of the support means for generating power by sunlight;
Wind speed measuring means for measuring the wind speed;
First control means for controlling the inclination angle of the side surface according to the measurement result of the wind speed measuring means;
A load that consumes the power generated by the solar power generation means;
A solar power generation device comprising:   The said load is an illuminating lamp, The solar power generation device in any one of Claims 1-4 characterized by the above-mentioned. A time measuring means for outputting time;
Second control means for turning on or off the illumination lamp based on the time output by the time measuring means;
The solar power generation device according to claim 5, further comprising: Illuminance measuring means for measuring the illuminance around the solar power generation device;
Based on the illuminance measured by the illuminance measuring means, third control means for turning on or off the illumination lamp;
The solar power generation device according to claim 5, further comprising: It further has a power storage means for storing the power generated by the solar power generation means,
The said load consumes the electric power currently stored in the said electrical storage means, The solar power generation device in any one of Claims 1-7 characterized by the above-mentioned. A fourth control means for controlling the amount of electric power stored in the power storage means so as not to be equal to or greater than a predetermined upper limit value and not to be equal to or lower than a predetermined lower limit value;
The solar power generation device according to claim 8, further comprising:

Images