JP2013168515A - Photovoltaic power generation device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve energy conversion efficiency for the full year of a photovoltaic power generation device.SOLUTION: A photovoltaic power generation device comprises plural photovoltaic members provided on a mounting object surface with an inclination angle α to a lower part of a vertical plane, and having a light-receiving surface for receiving sunlight. The device has: a first photovoltaic member whose inclination angle θ1 of a light receiving face to a lower part of the vertical plane is set to an arbitrary angle within a range (θm<θ1≤θs) larger than a vernal or autumnal equinox elevation angle θm and equal to or smaller than a summer solstice elevation angle θs, when an elevation angle to a south of a sun during a meridian time of a summer solstice is designated as a summer solstice elevation angle θs, an elevation angle to a south of a sun during a meridian time of a winter solstice is designated as a winter solstice elevation angle θw, and an elevation angle to a south of a sun during a meridian time of a vernal or autumnal equinox is designated as a vernal or autumnal equinox elevation angle θm; and a second photovoltaic member whose inclination angle θ2 of a light receiving face to a lower part of the vertical plane is set to an arbitrary angle within a range (θw≤θ2<θm) equal to or larger than the winter solstice elevation angle θw and smaller than the vernal or autumnal equinox elevation angle θm.

Description

  The present invention relates to a solar power generation apparatus that generates power by receiving sunlight with a solar member installed on a roof portion, an outer wall portion, or the like of a building.

  Conventionally, a solar panel is installed as a solar member of a solar power generation device on a roof portion or an outer wall portion of a building, and power is generated by receiving sunlight on the light receiving surface of the solar panel. ing.

JP 2010-263089 A

  The energy conversion efficiency from sunlight to electricity increases as the incident angle of sunlight on the light receiving surface of the solar panel is closer to a right angle. In addition, since the elevation angle of the southern reference sun changes throughout the year, the incident angle on the light receiving surface also changes.

  Here, generally, the light receiving surface of the solar panel is fixed in a state of being inclined at a predetermined inclination angle θ with respect to the lower side of the vertical plane. At this time, if the inclination angle θ is set to the same value as the elevation angle θm of the sun at the time of the spring or autumn day at the installation point of the solar panel, the sunlight is emitted at the middle of the spring or autumn day. Since the light is incident on the light receiving surface of the solar panel at an incident angle closer to a right angle, the energy conversion efficiency is high during the spring and autumn days. On the other hand, during the summer solstice and during the winter solstice, the incident angle of sunlight is farther from the right angle, so the energy conversion efficiency will decrease, but if you set this way, it will be average throughout the year. This is usually done because a certain degree of energy conversion efficiency can be secured.

  However, due to the recent increase in the use of renewable energy, there is a desire to further increase the energy conversion efficiency of photovoltaic power generation devices. In this regard, during the summer (period from spring to summer solstice to fall) If you have a solar panel with a specific tilt angle θs and a solar panel with a specific tilt angle θw for the winter season (the period from autumn to winter solstice to spring equinox), energy conversion efficiency will be further improved throughout the year. It is thought that it can be increased.

  This invention is made | formed in view of the above conventional problems, The objective is to raise the energy conversion efficiency of the year round of a solar power generation device.

In order to achieve this object, the invention shown in claim 1
In the solar power generation apparatus including the solar light member having a light receiving surface that receives sunlight, which is a plurality of solar light members provided on a surface to be attached whose inclination angle with respect to the lower side of the vertical surface is α,
The elevation angle with respect to the south of the sun during the summer solstice is the summer elevation angle θs, and the elevation angle with respect to the south of the winter solstice is the winter elevation angle θw. Is the spring / autumn elevation angle θm,
A first solar member in which an inclination angle θ1 of the light receiving surface with respect to a lower side of the vertical plane is set to an arbitrary angle within a range that is greater than the spring-autumn elevation angle θm and equal to or less than the summer elevation angle θs (θm <θ1 ≦ θs);
A second solar member in which the inclination angle θ2 of the light receiving surface with respect to the lower side of the vertical plane is set to an arbitrary angle in a range (θw ≦ θ2 <θm) that is equal to or greater than the winter elevation angle θw and smaller than the spring and autumn elevation angle θm; It is characterized by having.

  According to the first aspect of the present invention, the first sunlight member in which the inclination angle θ1 of the light receiving surface with respect to the lower part of the vertical surface is set to θm <θ1 ≦ θs, and the inclination angle of the light receiving surface with respect to the lower part of the vertical surface. θ2 has a second sunlight member in which θw ≦ θ2 <θm. Therefore, in the summer (period from spring equinox through summer solstice to fall equinox), the first solar component generates electricity from sunlight with high energy conversion efficiency, and in the winter (from autumn equinox through the winter solstice to the equinox) In the period of (2), since the second solar member generates electricity from sunlight with high energy conversion efficiency, the solar power generation device can generate electricity with high energy conversion efficiency throughout the year.

The invention shown in claim 2 is the solar power generation device of claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θs−90 ° <α ≦ θw) that is greater than the summer elevation angle θs−90 ° and less than or equal to the winter elevation angle θw.
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
The lower end edge of the second solar light member is provided to be located outward in the normal direction of the attachment target surface.

According to the second aspect of the present invention, the inclination angle α of the attachment target surface is set to θs−90 ° <α ≦ θw. Therefore, based on the former size condition, the shadow of the attachment target surface is prevented from being applied to the light receiving surface of the first solar member, and based on the latter size condition, the attachment target surface is surely and easily applied to the attachment target surface. 2 It becomes possible to attach the solar member.
In addition, since the inclination angle θ1 of the light receiving surface of the first solar member is set to the summer solstice angle θs, the sunlight is incident on the light receiving surface of the first solar member at an angle closer to a right angle during the summer solstice. In this way, the first sunlight member can convert sunlight into electricity with high energy conversion efficiency in summer.
Furthermore, since the inclination angle θ2 of the light receiving surface of the second sunlight member is set to the winter solstice angle θw, the incident angle near the right angle to the light receiving surface of the second solar member during the south solstice of the winter solstice. Thus, the second sunlight member can convert sunlight into electricity with high energy conversion efficiency in winter.

The invention described in claim 3 is the solar power generation device according to claim 2,
A plurality of the first sunlight members are provided in the vertical direction on the attachment target surface, and each of the plurality of first sunlight members is fixed with an upper end edge in contact with the attachment target surface. Has been
Among the first sunlight members adjacent in the vertical direction, when the length between the upper edge and the lower edge of the upper first sunlight member is L1,
The upper end edge of the lower first sunlight member is located at a position away from the position of the upper end edge of the upper first sunlight member by L1 / cos (θs−α) or more downward in the direction along the attachment target surface. It is fixed.

  According to the third aspect of the present invention, the fixing position of the upper end edge of the lower first sunlight member is set to L1 downward from the position of the upper end edge of the upper first sunlight member in the direction along the attachment target surface. Since the position is separated by at least / cos (θs−α), it is possible to avoid the shadow of the upper first sunlight member from being applied to the light receiving surface of the lower first sunlight member.

Invention of Claim 4 is a solar power generation device of Claim 2 or 3,
A plurality of the second sunlight members are provided in the vertical direction on the attachment target surface, and each of the plurality of second sunlight members is fixed with an upper end edge in contact with the attachment target surface. Has been
Among the second sunlight members adjacent in the vertical direction, when the length between the upper edge and the lower edge of the upper second sunlight member is L2,
The upper end edge of the lower second sunlight member is located at a position away from the position of the upper end edge of the upper second sunlight member by L2 / cos (θw−α) or more downward in the direction along the attachment target surface. It is fixed.

  According to the fourth aspect of the present invention, the fixing position of the upper end edge of the lower second solar member is set to L2 below the direction along the attachment target surface from the position of the upper end edge of the upper second solar member. / Cos (θw−α) or more away, so that at least on the day of the winter solstice, it is possible to avoid the shadow of the upper second solar member on the light receiving surface of the lower second solar member. .

The invention shown in claim 5 is the solar power generation device according to any one of claims 2 to 4,
The second solar light member is disposed between the first solar light members adjacent in the vertical direction.

  According to the fifth aspect of the present invention, the second solar member is disposed between the first solar members. Here, the portion between the first solar members is a portion where the shadow of the first solar member is easily formed in summer when the energy conversion efficiency of the first solar member is high. However, in winter, since the altitude of the sun is lower than that in summer, the shadow of the first solar member becomes small, making it difficult to make the shadow. Therefore, by arranging the second sunlight member in the part, sunlight can be converted into electricity with high energy conversion efficiency in winter, and the amount of power generation in winter can be increased. That is, since the second solar member is disposed in the dead space where the first solar member could not be disposed due to the occurrence of a shadow of the first solar member, the free space on the attachment target surface is reduced. Can be planned.

The invention described in claim 6 is the solar power generation device according to claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °). When the inclination state where the lower end position is located outward in the lateral direction along the normal direction of the vertical plane is defined as a positive value (α> 0),
The inclination angle α is set to an arbitrary angle within a range (θw <α <θs) that is larger than the winter altitude angle θw and smaller than the summer altitude angle θs,
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
The upper end edge of the second solar light member is located outside the lower end edge of the second solar member in the normal direction of the attachment target surface.

According to the sixth aspect of the invention, since the inclination angle α of the attachment target surface is set to θw <α <θs, the first solar member and the second solar member are respectively attached to the attachment target surface. It can be securely attached and supported on the surface to be attached.
Further, since the inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer solstice angle θs, sunlight enters the light receiving surface of the first sunlight member closer to a right angle during the summer solstice. Incident at the corners, thereby allowing the first solar member to convert sunlight into electricity with high energy conversion efficiency in summer.
Furthermore, since the inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter solstice angle θw, the sunlight is closer to the light receiving surface of the second solar member at a right angle during the south and middle of the winter solstice. Incident light is incident at an incident angle, whereby the second solar member can convert sunlight into electricity with high energy conversion efficiency in winter.

The invention shown in claim 7 is the solar power generation device according to claim 1,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θw <α <θs) that is larger than the winter altitude angle θw and smaller than the summer altitude angle θs,
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
The upper end edge is provided outside the lower end edge of the second sunlight member, and is located outside the normal direction of the attachment target surface.
A first changing mechanism that changes the tilt angle θ1 of the light receiving surface of the first sunlight member within a range (θm <θ1 ≦ θs) that is larger than the spring / autumn elevation angle θm and less than or equal to the summer elevation angle θs;
And a second changing mechanism that changes the inclination angle θ2 of the light receiving surface of the second sunlight member within a range (θw ≦ θ2 <θm) that is equal to or larger than the winter elevation angle θw and smaller than the spring and autumn elevation angle θm. And

  According to the seventh aspect of the present invention, the inclination angle θ1 of the light receiving surface of the first sunlight member can be changed within the range of θm <θ1 ≦ θs by the first changing mechanism. The inclination angle θ1 of the light receiving surface of the first solar member can be changed / adjusted according to the elevation angle of the sun during each day of the day. Therefore, for each day, the incident angle of sunlight on the light-receiving surface can be set to be closer to a right angle, and as a result, for each day from the summer, that is, from the spring to the summer solstice to the autumn, more Sunlight can be converted into electricity with high energy conversion efficiency.

  In addition, since the inclination angle θ2 of the light receiving surface of the second sunlight member can be changed within the range of θw ≦ θ2 <θm by the second changing mechanism, each day for each day from the autumn to the winter solstice to the spring equinox The inclination angle θ2 of the light receiving surface of the second solar member can be changed / adjusted according to the elevation angle of the sun during the south / central time. Therefore, for each day, the incident angle of sunlight on the light receiving surface can be set to be closer to a right angle, and as a result, for each day from the winter season, that is, from the autumn to the winter solstice to the spring equinox, more Sunlight can be converted into electricity with high energy conversion efficiency.

The invention shown in claim 8 is the solar power generation device of claim 7,
As the first change mechanism and the second change mechanism,
A first connecting portion that connects a lower end edge of the first solar light member and an upper end edge of the second solar light member while allowing relative rotation of each other;
One end edge of the upper end edge of the first sunlight member and the lower end edge of the second sunlight member is vertically moved in the direction along the attachment target surface while allowing relative rotation with the attachment target surface. A second connecting portion that is slidably connected;
The other end edge of the upper end edge of the first sunlight member and the lower end edge of the second sunlight member is vertically moved in the direction along the attachment target surface while allowing relative rotation with the attachment target surface. A third connecting part that is slidably movable;
And a drive source that slides on the one end edge.

  According to the invention described in claim 8, the first solar member and the second solar member are slid by moving one of the upper end edge of the first solar member and the lower end edge of the second solar member. The inclination angles θ1 and θ2 of the respective light receiving surfaces of the sunlight member can be changed simultaneously.

The invention shown in claim 9 is the solar power generation device according to claim 8,
The first solar member and the second solar member connected to each other form a solar member pair,
A plurality of the solar member pairs are provided on the attachment target surface at a predetermined pitch along the top and bottom in the direction along the attachment target surface,
When the length between the upper edge and the lower edge of the first sunlight member is L1, and the length between the upper edge and the lower edge of the second sunlight member is L2,
The predetermined pitch is set to a value equal to or greater than L1 + L2.

  According to the ninth aspect of the present invention, since the predetermined pitch is set to a value equal to or greater than L1 + L2, it is effective that the sunlight member pairs adjacent in the vertical direction interfere when the solar member pair slides. Thus, the light receiving surfaces of the first sunlight member and the second sunlight member can smoothly rotate. As a result, the inclination angles θ1 and θ2 of the light receiving surfaces are smoothly changed.

The invention shown in claim 10 is the solar power generation device of claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θs ≦ α <θw + 90 °) which is not less than the summer elevation angle θs and smaller than the winter elevation angle θw + 90 °,
The inner end edge in the lateral direction is located outside the outer end edge in the lateral direction of the first sunlight member, and is located outward in the normal direction of the attachment target surface.
The inner end edge in the lateral direction is provided outside the outer end edge in the lateral direction of the second sunlight member and is located outward in the normal direction of the attachment target surface. Features.

According to the tenth aspect of the present invention, the inclination angle α of the attachment target surface is set to θs ≦ α <θw + 90 °. Therefore, based on the latter size condition, it avoids that the shadow of the surface to be attached is applied to the light receiving surface of the second solar member, and based on the former size condition, the first and second conditions are reliably and easily applied to the surface to be attached. 1 It becomes possible to attach a sunlight member.
Further, since the inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer solstice angle θs, sunlight enters the light receiving surface of the first sunlight member closer to a right angle during the summer solstice. Incident at the corners, whereby the first solar member can convert sunlight into electricity with high energy conversion efficiency in summer.
Furthermore, since the inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter solstice angle θw, the sunlight is closer to the light receiving surface of the second solar member at a right angle during the summer solstice. Incident light is incident at an incident angle, whereby the second solar member can convert sunlight into electricity with high energy conversion efficiency in winter.

The invention shown in claim 11 is the solar power generation device of claim 10,
A plurality of the second sunlight members are provided side by side in the lateral direction on the attachment target surface, and each of the plurality of second sunlight members has an outer edge in the lateral direction. It is fixed in contact with the mounting target surface,
Among the second sunlight members adjacent in the lateral direction, when the length between the outer edge and the inner edge of the second sunlight member outside the lateral direction is L2. ,
The outer edge of the second solar member on the inner side in the lateral direction is L2 / cos (α−) inward in the direction along the attachment target surface from the position of the outer edge of the second solar member on the outer side. It is characterized by being fixed at a position separated by θw) or more.

  According to the eleventh aspect of the present invention, the fixing position of the outer edge of the inner second sunlight member is set inward in the direction along the attachment target surface from the position of the outer edge of the outer second sunlight member. At least at a distance of L2 / cos (α−θw), the shadow of the outer second solar member is applied to the light receiving surface of the inner second solar member at least in the middle of winter. Can be avoided.

The invention shown in claim 12 is the solar power generation device of claim 10 or 11,
A plurality of the first sunlight members are provided side by side in the lateral direction on the attachment target surface, and each of the plurality of first sunlight members has an outer edge in the lateral direction. It is fixed in contact with the mounting target surface,
Among the first sunlight members adjacent in the lateral direction, when the length between the outer edge and the inner edge of the first sunlight member outside the lateral direction is L1. ,
The outer edge of the first solar member on the inner side in the lateral direction is L1 / cos (α−) from the position of the outer edge of the first solar member on the outer side inward in the direction along the attachment target surface. It is characterized by being fixed at a position separated by θs) or more.

  According to the invention described in claim 12, the fixing position of the outer edge of the inner first sunlight member is set inward in the direction along the attachment target surface from the position of the outer edge of the outer first sunlight member. At least at the time of the summer solstice, the shadow of the outside first sunlight member is applied to the light receiving surface of the inside first sunlight member. Can be avoided.

The invention shown in claim 13 is the solar power generation device according to any one of claims 10 to 12,
The first sunlight member is disposed between the second sunlight members adjacent in the lateral direction.

  According to the invention described in claim 13, the first solar member is disposed between the second solar members. Here, the portion between the second solar members is a portion where the second solar member is easily shaded in winter when the energy conversion efficiency of the second solar member is high. However, in the summer, since the altitude of the sun is higher than that in the winter, the shadow of the second solar member becomes small and the shadow is difficult to be formed. Therefore, by arranging the first sunlight member in the portion, sunlight can be converted into electricity with high energy conversion efficiency in summer, and the amount of power generation in summer can be increased. That is, since the first solar member is disposed in the dead space where the second solar member could not be disposed due to the occurrence of a shadow of the second solar member, the free space on the attachment target surface is reduced. Can be planned.

The invention shown in claim 14 is the photovoltaic power generator according to claim 1,
A third changing mechanism for changing the inclination angle θ1 of the light receiving surface of the first sunlight member within a range that is larger than the spring / autumn elevation angle θm and less than or equal to the summer elevation angle θs (θm <θ1 ≦ θs); Features.

  According to the invention described in claim 14, the third changing mechanism can change the inclination angle θ1 of the light receiving surface of the first sunlight member in the range of θm <θ1 ≦ θs. It becomes possible to change and adjust the inclination angle θ1 of the light receiving surface of the first sunlight member according to the elevation angle of the sun during each day of the south and middle for each day. Therefore, for each day, the incident angle of sunlight on the light-receiving surface can be set closer to a right angle, and as a result, it is high for each day from the summer, that is, from the spring to the summer solstice to the autumn. Sunlight can be converted into electricity with energy conversion efficiency.

The invention shown in claim 15 is the solar power generation device of claim 1 or 14,
A fourth changing mechanism that changes the inclination angle θ2 of the light receiving surface of the second solar light member within a range (θw ≦ θ2 <θm) that is greater than the winter elevation angle θw and smaller than the spring / autumn elevation angle θm. Features.

  According to the invention described in claim 15, since the inclination angle θ2 of the light receiving surface of the second solar light member can be changed within the range of θw ≦ θ2 <θm by the fourth changing mechanism, it is changed from autumn to winter solstice. The inclination angle θ2 of the light receiving surface of the second solar member can be changed / adjusted according to the elevation angle of the sun during each day of the south and middle for each day. Therefore, for each day, the incident angle of sunlight on the light receiving surface can be set to be closer to a right angle, and as a result, it is high for each day from the winter season, that is, from the autumn to the winter solstice to the spring equinox. Sunlight can be converted into electricity with energy conversion efficiency.

The invention shown in claim 16 is the solar power generation device of claim 7,
The drive source operates using electricity generated by the first sunlight member or the second sunlight member as power.

  According to the invention shown in claim 16, the power required for changing the tilt angle θ1 and the tilt angle θ2 can be covered by the electric power generated by the first solar member or the second solar member. This eliminates the need for an external power supply.

The invention shown in claim 17 is the solar power generation device of claim 14,
The third changing mechanism has an electric drive source for changing an inclination angle θ1 of the first solar member,
The drive source operates using electricity generated by the first sunlight member or the second sunlight member as power.

  According to the invention shown in claim 17, the power required for changing the tilt angle θ1 can be covered by the electric power generated by the first solar member or the second solar member, and an external power source can be used. No need to use it.

The invention shown in claim 18 is the solar power generation device of claim 15,
The fourth changing mechanism has an electric drive source for changing an inclination angle θ2 of the second sunlight member,
The drive source operates using electricity generated by the first sunlight member or the second sunlight member as power.

  According to the invention described in claim 18, the power required for changing the tilt angle θ2 can be covered by the electric power generated by the first solar member or the second solar member, and the external power source can be used. No need to use it.

  ADVANTAGE OF THE INVENTION According to this invention, the energy conversion efficiency of the year round of a solar power generation device can be improved.

It is a schematic side view of the 1st mode for explaining the basic composition of the solar power generation device concerning the present invention. It is explanatory drawing of inclination-angle (alpha) of each attachment object surface 3 which concerns on a 1st-3rd aspect. FIG. 3A is an explanatory diagram of a problem when θs−90 ° ≧ α in the first aspect, and FIG. 3B is an explanatory diagram of a problem when θw <α in the first aspect. It is explanatory drawing of distance D1 (= L1 / cos ((theta) s- (alpha))) which concerns on the space | interval between the 1st sunlight panels 10 and 10 adjacent to an up-down direction. 5A and 5B are explanatory diagrams for explaining why it is preferable to arrange the second solar panel 20 at a position between the first solar panels 10 and 10 adjacent to each other in the vertical direction. It is explanatory drawing of distance D2 (= L2 / cos ((theta) w- (alpha))) which concerns on the space | interval between the 2nd sunlight panels 20 and 20 adjacent to an up-down direction. Description of distance D2 (= L2 × cos (θw−α) + L2 × tan (θm−α) × sin (θw−α)) related to the interval between second solar panels 20 and 20 adjacent in the vertical direction FIG. FIG. 8A is an explanatory diagram of a lower limit value D12 of a distance that should be separated from each other when the second solar panel 20 is located next to the lower side of the first solar panel 10, and FIG. It is explanatory drawing of the lower limit D21 of the distance which should separate | separate between each other, when the 1st solar panel 10 is located next to the downward direction of 2 solar panels 20. FIG. It is a case where the glass plate 9 is provided instead of the outer wall part of a building, Comprising: The 1st solar panel 10,10 ... and the 2nd solar panel 20,20 ... are the indoor side positions rather than the said glass plate 9. It is a schematic side view at the time of arrange | positioning. In a 1st aspect, it is a schematic side view of the structural example in case the inclination angle (theta) 1 of the 1st solar panel 10 and the inclination angle (theta) 2 of the 2nd solar panel 20 are changed every day. It is a schematic side view of a 2nd aspect. FIG. 12A is an explanatory diagram of a problem when θw ≧ α in the second mode, and FIG. 12B is an explanatory diagram of a problem when α ≧ θs in the second mode. It is a schematic side view at the time of arrange | positioning 1st solar panel 10,10 ... and 2nd solar panel 20,20 ... in the position of the indoor side rather than the window part W which the building inclined. In the case of θ2 ≧ α, it is a schematic side view showing that a triangular shape cannot be formed by the three of the first solar panel 10, the second solar panel 20, and the attachment target surface 3. In a 2nd aspect, it is a schematic side view of the structural example in case the inclination angle (theta) 1 of the 1st solar panel 10 and the inclination angle (theta) 2 of the 2nd solar panel 20 are changed every day. FIG. 16A is a conceptual diagram showing the inclination angles θ1 and θ2 of the spring equinox day or the autumn equinox day, and FIG. 16B is a conceptual diagram showing the inclination angles θ1 and θ2 of the summer solstice day or the winter solstice day. It is a schematic side view of a 3rd aspect. FIG. 18A is an explanatory diagram of problems when α ≧ θw + 90 ° in the third aspect, and FIG. 18B is an explanatory diagram of problems when θs> α in the third aspect. It is explanatory drawing of distance D2 '(= L2 / cos ((alpha)-(theta) w)) which concerns on the space | interval between the 2nd sunlight panels 20 and 20 adjacent to a side direction. 20A and 20B are explanatory diagrams for explaining why it is preferable to dispose the first solar panel 10 at a position between the second solar panels 20 and 20 adjacent to each other in the lateral direction. It is explanatory drawing of distance D1 '(= L1 / cos ((alpha)-(theta) s)) which concerns on the space | interval between the 1st sunlight panels 10 and 10 adjacent to a side direction. Distance D1 ′ (= L1 × cos (α−θs) + L1 × tan (α−θm) × sin (α−θs)) related to the distance between the first solar panels 10 and 10 adjacent in the lateral direction. It is explanatory drawing of. FIG. 23A is an explanatory diagram of a lower limit value D12 ′ of the distance that should be separated from each other when the second solar panel 20 is located next to the inside of the first solar panel 10 in the lateral direction. FIG. 23B is an explanatory diagram of a lower limit value D21 ′ of the distance that should be separated from each other when the first solar panel 10 is located next to the inner side of the second solar panel 20 in the lateral direction. is there. When the glass plate 9 is provided instead of the roof portion of the building, the first solar panels 10, 10... And the second solar panels 20, 20. It is a schematic side view at the time of arrange | positioning. In a 3rd aspect, it is a schematic side view of the structural example in case the inclination angle (theta) 1 of the 1st solar panel 10 and the inclination angle (theta) 2 of the 2nd solar panel 20 are changed every day. It is a schematic side view of other embodiment. It is a schematic side view of other embodiment. It is a schematic side view of other embodiment. It is a schematic side view of other embodiment. It is a schematic side view of other embodiment.

=== This Embodiment ===
First, the basic configuration of the present invention will be described with reference to the schematic side view of FIG.
The solar power generation device of the present invention includes a plurality of first solar panels 10, 10... (Corresponding to a first solar member) and a plurality of second solar panels 20, 20. ). Each of the solar panels 10 and 20 has light receiving surfaces 10a and 20a, and generates electricity by receiving sunlight at the light receiving surfaces 10a and 20a. And each solar panel 10 and 20 has the characteristic that the energy conversion efficiency from sunlight to electricity becomes high, so that the incident angle of the sunlight to the light-receiving surface 10a and 20a is near right angle. The solar panels 10 and 20 can be applied with a well-known configuration such as a thin-film solar cell made mainly of a silicon semiconductor or the like. The flat surface corresponds to the above-described light receiving surfaces 10a and 20a.

  For both the light receiving surface 10a of the first solar panel 10 and the light receiving surface 20a of the second solar panel 20, the inclination angles θ1 and θ2 are set with reference to the common vertical surface As. It is arranged in a state inclined by predetermined inclination angles θ1, θ2 with respect to the lower side of the vertical plane As. The inclination angles θ1 and θ2 are different from each other. That is, the light receiving surface 10a of the first solar panel 10 is set to an inclination angle θ1 that exhibits high energy conversion efficiency in summer, while the light receiving surface 20a of the second solar panel 20 is high in winter. The inclination angle θ2 is set so as to exhibit energy conversion efficiency.

  Here, before describing the inclination angles θ1 and θ2, terms will be defined. First, the elevation angle with respect to the south of the sun at the time of the summer solstice is called the summer supremacy angle θs, and the elevation angle with respect to the south of the sun at the time of the winter solstice is called the winter elevation angle θw. The angle of elevation relative to the south of the sun at mid-time is called the spring-autumn elevation angle θm.

  In the first solar panel 10 specialized for summer power generation, the inclination angle θ1 of the light receiving surface 10a is larger than the spring / autumn elevation angle θm and less than or equal to the summer elevation angle θs (θm <θ1 ≦ θs). It is set to an arbitrary angle. Further, in the second solar panel 20 specialized for power generation in winter, the inclination angle θ2 of the light receiving surface 20a is in a range (θw ≦ θ2 <θm) that is equal to or greater than the winter maximum elevation angle θw and smaller than the spring / autumn elevation angle θm. It is set to an arbitrary angle. For example, in Tokyo where the latitude is 35 °, the summer elevation angle θs is 78 ° (= 90 ° −35 ° + 23.4 °) and the winter elevation angle θw is 32 ° (90 ° −35 ° −23.4 °). Since the spring / autumn elevation angle θm is 55 ° (= 90 ° -35 °), in that case, the inclination angle θ1 of the first solar panel 10 is set to an arbitrary angle of 55 ° <θ1 ≦ 78 °. 2 The inclination angle θ2 of the solar panel 20 is set to an arbitrary angle of 32 ° ≦ θ2 <55 °. Therefore, in the summer, sunlight is incident on the light receiving surface 10a of the first solar panel 10 at an incident angle closer to a right angle, while in the winter, the sunlight is incident on the light receiving surface 20a of the second solar panel 20. However, since it is incident at an incident angle closer to a right angle, the solar power generation device can generate power with high energy conversion efficiency throughout the year.

  As the attachment target surface 3 to which the first and second solar panels 10 and 20 are attached, direct sunlight is used both in the summer solstice and in the winter solstice among the surfaces provided by structures such as buildings. The side that hits. For example, a substantially vertical surface portion 4 such as an outer wall portion of a building as shown in FIG. 1, a substantially horizontal surface portion 6 such as a roof portion of a building (see FIG. 17), and between the substantially vertical surface portion 4 and the substantially horizontal surface portion 6. Although it is assumed that it is attached to a substantially sloped part 5 (see FIG. 11) having a slope of, it is assumed that direct sunlight will be applied both in the middle of the summer solstice and in the middle of the winter solstice. This surface is the attachment target surface 3. In addition, in the example of FIG.1, FIG.11 and FIG.17, although the case where the attachment object surface 3 has faced the direction parallel to the north-south direction is illustrated, it is the attachment object surface 3 which satisfies the said conditions. If there is, it may face in directions other than the direction parallel to the north-south direction.

  In the present embodiment, the summer elevation angle θs is selected from the above range θm <θ1 ≦ θs as the inclination angle θ1 of the light receiving surface 10a of the first solar panel 10, and the above θ1 is set to the same value as the summer elevation angle θs. Further, as the inclination angle θ2 of the light receiving surface 20a of the second solar panel 20, the winter elevation angle θw is selected from the above range θw ≦ θ2 <θm, and the above θ2 is set to the same value as the winter elevation angle θw. It is set.

  And when the inclination angle θ1 of the first solar panel 10 is set to θs and the inclination angle θ2 of the second solar panel 20 is set to θw, the first and second solar panels 10, According to the inclination angle α formed between the attachment target surface 3 to which 20 is to be attached and the lower side of the vertical surface As, the attachment manner is roughly divided into first to third embodiments. Incidentally, the term “vertical surface As” that defines the inclination angle α described above refers to a surface that is the same or parallel to the vertical surface As that defines the inclination angles θ1 and θ2 of the light receiving surfaces 10a and 20a. .

  FIG. 2 is an explanatory diagram of the first to third aspects. In the following, one side of the horizontal lateral direction is referred to as an outer side, and the other side is referred to as an inner side. Incidentally, “outside” corresponds to the outside of the building (structure), “inside” corresponds to the inside of the building, and the side direction is the normal line of the vertical plane As described above. It also corresponds to the direction.

  Further, here, as the definition of the inclination angle α, a state in which the attachment target surface 3 is parallel to the lower side of the vertical surface As is α = 0 °, and the lower end position is higher than the upper end position on the attachment target surface 3. The inclination state protruding outward in the lateral direction, which is the normal direction of As, is α> 0 (the clockwise direction in FIG. 2). When α is in the range of 0 <α <90 °, the attachment target surface 3 faces outward in the lateral direction (more precisely, obliquely upward outward), but when α = 90 °, the attachment target The surface 3 becomes a horizontal surface, and the surface 3 faces vertically upward. Further, in a range of 90 ° <α <180 °, the surface 3 faces inward in the lateral direction (more precisely, obliquely upward inward). .

  As shown in FIG. 2, the first aspect is a case where the substantially vertical surface portion 4 of the building is the attachment target surface 3, and the second aspect is a case where the substantially inclined surface portion 5 is the attachment target surface 3, The third aspect is a case where the substantially horizontal plane portion 6 is the attachment target surface 3. Specifically, the first aspect is a case where the inclination angle α of the attachment target surface 3 is θs−90 ° <α ≦ θw, and the second aspect is that the inclination angle α of the attachment target surface 3 is θw < This is a case where α <θs, and the third mode is a case where the inclination angle α of the attachment target surface 3 is θs ≦ α <θw + 90 °. More specifically, in the case of Tokyo with a latitude of 35 °, since the summer supremacy angle θs is 78 ° and the winter supremacy angle θw is 32 °, the first mode is −12 ° <α ≦ 32 °, The aspect is 32 ° <α <78 °, and the third aspect is 78 ° ≦ α <122 °. Hereinafter, each of the first to third aspects will be described in detail, including the reason why the angle range is divided into three.

<<<< first aspect >>>>
In the first mode of FIG. 1, the substantially vertical surface portion 4 is set as the attachment target surface 3 as described above. In other words, the inclination angle α of the attachment target surface 3 is set to an arbitrary value in the range of θs−90 ° <α ≦ θw, and in the case of Tokyo, −12 ° <α ≦ 32 °. It is set to an arbitrary value in the range. In the following, every time the description of the tilt angle α appears in the text, a numerical example in Tokyo is also written in parentheses immediately after that so that the tilt angle α can be easily imaged. And the some 1st solar panel 10,10 ... and several 2nd solar panel 20,20 ... are arrange | positioned along with the up-down direction in the louver form on the attachment object surface 3 of this inclination angle (alpha). ing.

  Here, the first solar panel 10 is cantilevered by being fixed to the attachment target surface 3 at the upper end edge 10eu, that is, the lower end edge 10ed is attached to the upper end edge 10eu. It is located outside the normal direction of the surface 3, so that the inclination angle θ <b> 1 with respect to the lower side of the vertical surface As is set to θs. Further, the second solar panel 20 is also cantilevered by being abutted and fixed to the mounting target surface 3 at the upper end edge 20eu, that is, the lower end edge 20ed is attached to the upper end edge 20eu. The inclination angle θ2 with respect to the lower side of the vertical surface As is set to θw.

  Therefore, if the inclination angle α is an attachment target surface 3 that satisfies the condition of θs−90 ° <α ≦ θw (−12 ° <α ≦ 32 ° in Tokyo), the attachment target surface 3 is The 1st solar panel 10 and the 2nd solar panel 20 can be attached without a problem. More specifically, first, in the first embodiment, when θs−90 ° ≧ α (in the Tokyo, −12 ° ≧ α) that falls outside the above condition, as shown in FIG. At the time of the summer elevation angle θs, which is the elevation angle θs of the sun during south-central time (θs = 78 ° in Tokyo), the shadow of the attachment target surface 3 enters a part of the light receiving surface 10a of the first solar panel 10. It becomes. In addition, when α> θw where α deviates from the above condition to the higher side (in the case of α> 32 ° in Tokyo), when the second solar panel 20 is attached to the attachment target surface 3, FIG. As shown, the lower part 20d of the second solar panel 20 has to be embedded in the attachment target surface 3, which is not easily attached and causes a problem. In this regard, these problems can be avoided if the above conditions are satisfied. That is, if the inclination angle α of the attachment target surface 3 satisfies the condition of θs−90 ° <α ≦ θw (−12 ° <α ≦ 32 ° in Tokyo), the shadow of the attachment target surface 3 is the first sunlight. The second solar panel 20 can be reliably and easily attached to the attachment target surface 3 while avoiding the light receiving surface 10 a of the panel 10.

  As shown in FIG. 1, a plurality of first solar panels 10, 10... Are provided on the attachment target surface 3, and each first solar panel 10 is adjacent to each other in the vertical direction. A space is provided between the panel 10 and the panel 10. Then, this interval may be set as follows. That is, as shown in FIG. 4, the length between the upper edge 10 eu and the lower edge 10 ed of the upper first solar panel 10 among the first solar panels 10, 10 adjacent in the up-down direction is set. In the case of L1, the upper end edge 10eu of the lower first solar panel 10 has a distance D1 (=) downward from the position of the upper end edge 10eu of the upper first solar panel 10 in the direction along the attachment target surface 3. It may be fixed at a position separated by L1 / cos (θs−α)) or more. If it does so, it will become possible to avoid that the shadow of the 1st sunlight panel 10 applies to the light-receiving surface 10a of the 1st sunlight panel 10 adjacent to the downward direction throughout the year. Details are as follows.

  First, the mathematical formula L1 / cos (θs−α) related to the distance D1 is obtained by referring to FIG. 4, and the first solar panel 10 formed on the mounting target surface 3 at the time of the south solstice of the summer solstice. Represents the length of the shadow. And since the summer altitude of the summer solstice has the highest solar altitude during the year, in the case of the shadow formed on the substantially vertical surface 4 as in the first aspect, Is the longest of the year. Therefore, if the first solar panels 10 and 10 are separated from each other by a distance D1 or more as described above, the shadow of the first solar panel 10 is reflected on the light receiving surface 10a of the first solar panel 10 adjacent below the first solar panel 10. Such a situation can be avoided over the course of the year. As a result, the light receiving surface 10a of the lower first solar panel 10 is affected by the shadow of the upper first solar panel 10 over the course of the year. To be released.

  In the example of FIG. 1, the length L1 of the first solar panel 10 is uniform over all the first solar panels 10, 10..., And thus the distance D1 (= L1 / cos) described above. The value of (θs−α) is the same for all the first solar panels 10, 10. In the example of FIG. 1, all the first solar panels 10, 10... Are arranged with a predetermined value P1 that is equal to or greater than the distance D1 as an arrangement pitch in the vertical direction on the attachment target surface 3. Each of the first solar panels 10, 10... Is released from the influence of the shadow of the first solar panel 10 located above itself.

  On the other hand, the second solar panels 20, 20. And in the example of FIG. 1, the 2nd solar panel 20 is provided in the position between the 1st solar panels 10 and 10 adjacent to an up-down direction. Here, the reason why the second solar panel 20 is provided at the same position is as follows. As shown in FIG. 5A, the position between the first solar panels 10 and 10 on the attachment target surface 3 is the first sunlight in the summer when the energy conversion efficiency of the first solar panel 10 is high. This is a portion where the shadow of the panel 10 is easily formed. Therefore, it becomes a dead space in summer. However, as shown in FIG. 5B, in winter, since the altitude of the sun is lower than that in summer, the shadow of the first solar panel 10 becomes smaller and it becomes difficult to make the shadow. Therefore, in the 2nd solar panel 20 specialized in winter, it can be arrange | positioned in the position between 1st solar panels 10 and 10, and if it arrange | positions, it is sunlight with high energy conversion efficiency in winter Therefore, the second solar panel 20 is disposed at a position between the first solar panels 10 and 10 for such a reason.

  In this example, as shown in FIG. 1, three second solar panels 20, 20, 20 are arranged in the vertical direction as a plurality of examples at positions between the first solar panels 10, 10 adjacent in the vertical direction. However, the present invention is not limited to this, and may be one, two, or four or more. In the case where a plurality of second solar panels 20 are provided, as in the case of the first solar panel 10 described above, the second solar panel is taken into consideration so that the influence of the shadow on the light receiving surface 20a is reduced. It is desirable that the distance between 20, 20 is set.

  That is, as shown in FIG. 6, the length between the upper end edge 20eu and the lower end edge 20ed of the upper second solar panel 20 among the second solar panels 20 and 20 adjacent in the up-down direction is set. In the case of L2, the upper end edge 20eu of the lower second solar panel 20 has a distance D2 (= below the direction along the attachment target surface 3 from the position of the upper end edge 20eu of the upper second solar panel 20. It may be fixed at a position separated by L2 / cos (θw−α)) or more. If it does in this way, it will become possible to avoid that the shadow of the 2nd solar panel 20 applies to the light-receiving surface 20a of the 2nd solar panel 20 adjacent to the lower part at least on the day of the winter solstice. Details are as follows.

  First, the mathematical formula L2 / cos (θw−α) related to the distance D2 is obtained by referring to FIG. 6, the second solar panel 20 formed on the attachment target surface 3 at the time of the south solstice of the winter solstice. Represents the length of the shadow. And the time of the south solstice of this winter solstice is the time when the length of the shadow formed on the attachment target surface 3 becomes the longest on the day of the winter solstice. Therefore, if the second solar panels 20 and 20 are separated from each other by a distance D2 or more as described above, the shadow of the second solar panel 20 is reflected on the light receiving surface 20a of the second solar panel 20 adjacent below it. This can be avoided at least on the day of the winter solstice. As a result, on the day of the winter solstice, the light receiving surface 20a of the lower second solar panel 20 is affected by the shadow of the second solar panel 20 above it. Freed from influence.

  In addition, in the example of FIG. 1, since the length L2 of the 2nd solar panel 20 is equal over all the 2nd solar panels 20, 20, ..., said distance D2 (= L2 / cos) The value of (θw−α)) is also the same for all the second solar panels 20, 20. In the example of FIG. 1, each second solar panel 20 between the first solar panels 10, 10 has a predetermined arrangement value P <b> 2 that is equal to or greater than the distance D <b> 2, and a vertical arrangement pitch on the attachment target surface 3. As a result, the second solar panels 20, 20... Are released from the influence of the shadow of the second solar panel 20 positioned above itself.

In addition, when the area of the attachment target surface 3 has a margin, the above-described distance D2 may be further expanded, that is, the distance D2 may be set to a value obtained from Equation 1 below.
D2 = L2 × cos (θw−α)
+ L2 × tan (θm−α) × sin (θw−α) (1)

  Here, as shown in FIG. 7, Equation 1 shows the length of the shadow of the second solar panel 20 formed on the attachment target surface 3 during the spring and autumn day or the autumn day of the autumn day. . And the length of the shadow at the south-central time of this spring equinox day or autumn equinox day is the longest in the winter season. Therefore, the position where the upper end edge 20eu of the lower second solar panel 20 is separated from the position of the upper end edge 20eu of the upper second solar panel 20 in the direction along the attachment target surface 3 by the distance D2 or more. If it fixes to, it becomes possible to avoid that the shadow of the 2nd solar panel 20 applies to the light-receiving surface 20a of the 2nd solar panel 20 adjacent to the downward direction over all the days of winter. As a result, it is possible to effectively increase the amount of power generation in winter by effectively using the second solar panel 20 specialized in winter. The above equation 1 can be obtained from the geometric relationship of FIG.

  By the way, when the 2nd solar panel 20 is arrange | positioned between the 1st solar panels 10 and 10 as mentioned above, the shadow of the 1st solar panel 10 is light reception of the 2nd solar panel 20. There is a risk that the surface 20a may be applied, or the shadow of the second solar panel 20 may be applied to the light receiving surface 10a of the first solar panel 10. For example, when the second solar panel 20 is located below the first solar panel 10, the shadow of the first solar panel 10 may be applied to the light receiving surface 20 a of the second solar panel 20. On the contrary, when the first solar panel 10 is located next to the lower side of the second solar panel 20, the shadow of the second solar panel 20 is the light receiving surface of the first solar panel 10. 10a.

  Therefore, regarding the positional relationship between the first solar panel 10 and the second solar panel 20 that are adjacent to each other in the vertical direction, the first solar panel 10 is considered in consideration of the influence of the shadow on the light receiving surfaces 10a and 20a as described above. It is desirable to set the distance between the solar panel 10 and the second solar panel 20. Hereinafter, when the second solar panel 20 is located next to the lower side of the first solar panel 10 as illustrated in FIG. 8A, the lower limit value of the distance to be separated from each other is referred to as “distance D12”. In addition, when the first solar panel 10 is located next to the lower side of the second solar panel 20 as shown in FIG. "

First, the distance D12 will be described with reference to FIG. 8A. The second solar panel 20 should generate power effectively in winter. In addition, the longest shadow of the first solar panel 10 in this winter season is at the middle of the spring or autumn day. This longest length can be obtained from the geometric relationship by replacing “θw” in Equation 1 with θs and replacing “L2” in Equation 1 with L1. Is equivalent to the distance D12, the distance D12 is expressed by the following equation 2.
D12 = L1 × cos (θs−α)
+ L1 × tan (θm−α) × sin (θs−α) (2)

  Therefore, the upper end edge 20eu of the lower second solar panel 20 is fixed at a position away from the position of the upper end edge 10eu of the upper first solar panel 10 in the direction along the attachment target surface 3 by a distance D12 or more. If it is done, it will become possible to avoid that the shadow of the 1st solar panel 10 applies to the light-receiving surface 20a of the 2nd solar panel 20 adjacent to the downward direction over all the days of winter.

Next, the distance D21 will be described with reference to FIG. 8B. The first solar panel 10 should effectively generate power in the summer. In addition, the longest shadow of the second solar panel 20 in this summer is during the summer solstice. The longest length can be obtained by replacing “θm” in the above-mentioned formula 1 with θs. Since the longest length corresponds to the distance D21, the distance D21 is expressed by the following formula 3. Is done.
D21 = L2 × cos (θw−α)
+ L2 × tan (θs−α) × sin (θw−α) (3)

  Therefore, the upper end edge 10eu of the lower first solar panel 10 is fixed at a position away from the position of the upper end edge 20eu of the upper second solar panel 20 in the direction along the attachment target surface 3 by a distance D21 or more. If it is done, it will become possible to avoid that the shadow of the 2nd sunlight panel 20 applies to the light-receiving surface 10a of the 1st sunlight panel 10 adjacent to the downward direction on all the days of summer.

  As specific examples of the attachment target surface 3 according to the first aspect, that is, the substantially vertical surface portion 4, basically, a vertical outer wall portion of a building, an outer wall portion inclined at a steep slope, a vertical window portion, or a steep Examples include windows that are inclined at a slope. However, the attachment target surface 3 may be a virtual surface that does not actually exist. For example, when the glass plate 9 is used as a substitute for the outer wall portion as in a glass-walled building, as shown in FIG. It is assumed that 10 ... and the second solar panels 20, 20 ... are arranged. In such a case, the first and second solar panels 10 and 20 may be supported by appropriate stay members (not shown) provided on the indoor pillars 8a and beams 8b. The configuration corresponding to the attachment target surface 3 may not exist, but in that case, the attachment target surface 3 may be considered as a virtual surface.

  By the way, in the above-described example, the inclination angle θ1 of the light receiving surface 10a of the first solar panel 10 is set to a fixed value equal to the summer supremacy angle θs, and the inclination angle θ2 of the light receiving surface 20a of the second solar panel 20 is set to the winter solstice. Although the fixed value is the same as the elevation angle θw, it is not limited to this. That is, as described above, the inclination angle θ1 of the first solar panel 10 may be set to an arbitrary value within the range of θm <θ1 ≦ θs (55 ° <θ1 ≦ 78 ° in Tokyo). The inclination angle θ2 of the second solar panel 20 may also be set to an arbitrary value as long as it is in the range of θw ≦ θ2 <θm (32 ° ≦ θ1 <55 ° in Tokyo). If each is set within this range, in the summer, the sunlight is incident on the light receiving surface 10a of the first solar panel 10 at an incident angle closer to a right angle, while in the winter, the second sun Sunlight is incident on the light receiving surface 20a of the optical panel 20 at an incident angle nearer to a right angle, so that the first solar panel 10 and the second solar panel 20 are specially adapted for power generation in summer and winter, respectively. It becomes a thing.

  Further, the inclination angle θ1 of the first solar panel 10 and the inclination angle θ2 of the second solar panel 20 may be changed every day. For example, as shown in the schematic side view of FIG. 10, the inclination angle θ1 of the first solar panel 10 is changed from θma slightly larger than θm to θs with the passage of the day from the equinox day to the summer solstice day. While gradually increasing, this operation may be reversed at the summer solstice, that is, gradually decreasing from θs to θma with the passage of the day from the summer solstice to the autumn day. Similarly, the inclination angle θ2 of the second solar panel 20 is gradually decreased from θmb slightly smaller than θm to θw with the passage of days from the autumn day to the winter solstice day, while the winter solstice is reduced. This operation may be reversed at the boundary, that is, gradually increase from θw to θmb with the passage of the day from the winter solstice day to the spring equinox day.

  And if it changes in this way, while being able to orient | assign the light-receiving surface 10a of the 1st solar panel 10 to the direction which sunlight injects at a right angle at the time of the south and middle over all the days of summer, The light receiving surface 20a of the second solar panel 20 can be oriented in such a direction that sunlight enters at a right angle during the south and middle hours throughout the winter. As a result, the energy conversion efficiency of the photovoltaic power generator can be further increased.

  In the winter period from the autumn day to the winter solstice through the winter solstice, the inclination angle θ1 of the first solar panel 10 may be fixed to a predetermined angle in a range of θm <θ1 ≦ θs, for example. In the summer period from the equinox day through the summer solstice to the fall equinox day, the inclination angle θ2 of the second solar panel 20 may be fixed at a predetermined angle in the range of θw ≦ θ2 <θm, for example.

Thus, as a change mechanism (equivalent to a 3rd change mechanism) which changes inclination-angle (theta) 1 of the 1st solar panel 10, as shown in FIG. 10, the upper end edge 10eu of the 1st solar panel 10 is used as a rotating shaft. A shaft support member 12 such as a hinge member that is rotatably supported, a drive source (not shown) such as an electric motor that rotates the first solar panel 10 around the upper edge 10eu, a computer that controls the drive source, and the like And a control unit (not shown). Similarly, as a change mechanism (corresponding to a fourth change mechanism) for changing the inclination angle θ2 of the second solar panel 20, a hinge member that rotatably supports the upper end edge 20eu of the second solar panel 20 as a rotation axis. And the like, a drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the upper edge 20eu, and a control unit (not shown) such as a computer that controls the drive source. And can be exemplified.
And in any of the control units, it has a storage unit such as a hard disk, and in the same storage unit, the data of the inclination angle θ1 of each day or the inclination of each day in association with each day of the year. Data on the angle θ2 is stored. Accordingly, the processor of the control unit transmits the rotation angle control signal to the drive source based on the data, whereby the daily inclination angles θ1 and θ2 are changed.

  In any of these changing mechanisms, when an electric motor is used as a drive source, the first solar panel 10 or the second solar panel 20 generates power necessary for the operation of the electric motor. It may be covered by the electric power. In that case, for example, a storage battery is provided, electricity generated by the first solar panel 10 or the second solar panel 20 is stored in the storage battery, and power is supplied from the storage battery to the electric motor.

<<< Second Aspect >>>
Next, a 2nd aspect is demonstrated. In the second mode shown in FIG. 11, the substantially slope portion 5 of the building is the attachment target surface 3 as described above. In other words, the inclination angle α of the attachment target surface 3 is in the range of θw <α <θs (Tokyo). Is set to an arbitrary value of 32 ° <α <78 °. And the 1st solar panel 10 and the 2nd solar panel 20 are arrange | positioned alternately by the attachment object surface 3 in the up-down direction.

  Here, the first solar panel 10 is abutted and fixed to the attachment target surface 3 at the upper end edge 10eu, and the lower end edge 10ed is in the normal direction of the attachment target surface 3 rather than the upper end edge 10eu. Thus, the inclination angle θ1 with respect to the lower side of the vertical plane As is set to θs. Further, the second solar panel 20 is abutted and fixed to the mounting target surface 3 at the lower end edge 20ed, and the upper end edge 20eu is in the normal direction of the mounting target surface 3 rather than the lower end edge 20ed. Accordingly, an inclination angle θ2 with respect to the lower side of the vertical plane As is set to θw. Here, the lower end edge 10ed of the first solar panel 10 which is a free end and the upper end edge 20eu of the second solar panel 20 are connected to each other, whereby the first solar panel 10 and the second solar panel. 20 are combined one by one to form a panel pair G12 (corresponding to a solar member pair) having a V-shaped cross section.

  Therefore, if the inclination angle α is an attachment target surface 3 that satisfies the condition of θw <α <θs (32 ° <α <78 ° in Tokyo), the first solar panel 10 and the second sun The optical panel 20 can be attached without any problem. That is, when this condition is not satisfied, as shown in FIG. 12A or 12B, either the upper edge 10eu or the lower edge 20ed of the panel pair G12 floats away from the attachment target surface 3, Although the panel pair G12 cannot be stably supported, if the above condition is satisfied in this respect, both the upper edge 10eu and the lower edge 20ed of the panel pair G12 can be abutted and fixed to the attachment target surface 3, and the result , It is excellent in support stability. More specifically, in the second mode, when θw ≧ α (32 ° ≧ α in Tokyo) where α deviates from the above condition, as shown in FIG. 12A, the lower edge 20ed of the panel pair G12 is It floats away from the attachment target surface 3 and causes a problem in terms of support stability. Also, when α ≧ θs (α ≧ 78 ° in Tokyo) where α deviates from the above condition, the upper edge 10eu of the panel pair G12 is lifted from the attachment target surface 3 as shown in FIG. 12B. This is a problem in terms of support stability. In this regard, these problems can be avoided if the above conditions are satisfied. That is, both the upper end edge 10eu and the lower end edge 20ed of the panel pair G12 can be reliably abutted and fixed to the attachment target surface 3, and as a result, the support stability is improved. However, the configuration as shown in FIG. 12A or 12B is interesting in design. Therefore, when the design property is given priority over the support stability, it is configured as shown in FIG. 12A or 12B. Also good.

  As a specific example of the attachment target surface 3 according to the second aspect, that is, the substantially inclined surface portion 5, basically, an inclined outer wall portion, an inclined window portion, an inclined roof portion, or the like of a building can be cited. However, as described in the first aspect, the attachment target surface 3 may be a virtual surface that does not actually exist. For example, as shown in FIG. 13, it is assumed that the first solar panels 10, 10,... And the second solar panels 20, 20,. In such a case, the solar panels 10 and 20 may be supported by an appropriate stay member (not shown) provided on the indoor pillar or beam 8b, which corresponds to the attachment target surface 3. However, in this case, the attachment target surface 3 may be considered as a virtual surface.

  In the example of FIG. 11 described above, the inclination angle θ1 of the light receiving surface 10a of the first solar panel 10 is set to a fixed value equal to the summer supremacy angle θs, and the inclination angle of the light receiving surface 20a of the second solar panel 20 is set. Although θ2 is a fixed value equal to the winter elevation angle θw, it is not limited to this. That is, as described above, the tilt angle θ1 of the first solar panel 10 is set to an arbitrary value in the range of θm <θ1 ≦ θs (55 ° <θ1 ≦ 78 ° in Tokyo) if possible. Also, the inclination angle θ2 of the second solar panel 20 may be set to an arbitrary value in the range of θw ≦ θ2 <θm (32 ° ≦ θ1 <55 ° in Tokyo) if possible. good. If each is set within this range, in the summer, the sunlight is incident on the light receiving surface 10a of the first solar panel 10 at an incident angle closer to a right angle, while in the winter, the second sun Sunlight is incident on the light receiving surface 20a of the optical panel 20 at an incident angle nearer to a right angle, so that the first solar panel 10 and the second solar panel 20 are specially adapted for power generation in summer and winter, respectively. It becomes a thing. Incidentally, in the case of θ2 <α, the triangular shape of the cross section as in the example of FIG. 11 can be formed by the three of the first solar panel 10, the second solar panel 20, and the attachment target surface 3. However, in the case of θ2 ≧ α, the triangular cross section cannot be formed, that is, the lower end edge 10ed of the first solar panel 10 and the upper end edge 20eu of the second solar panel 20 as shown in FIG. It becomes the arrangement | positioning aspect spaced apart.

  Further, the inclination angle θ1 of the first solar panel 10 and the inclination angle θ2 of the second solar panel 20 may be changed every day. FIG. 15 is an explanatory diagram of a configuration example having a change mechanism (corresponding to a first change mechanism and a second change mechanism) that changes the tilt angles θ1 and θ2.

  In this example, first, the lower end edge 10ed of the first solar panel 10 and the upper end edge 20eu of the second solar panel 20 are connected via a first hinge member 14 as an example of a first connecting portion. This allows relative rotation of each other. Further, the attachment target surface 3 is provided with a slider 15a that can be slid up and down in the direction along the surface 3. The slider 15a has a second hinge member 15b (by combining with the slider 15a, The upper edge 10eu of the first solar panel 10 is connected while being allowed to rotate relative to each other. Further, the third hinge member 16 is fixed to the attachment target surface 3, and the lower end edge 20ed of the second solar panel 20 is connected via the third hinge member 16 while allowing relative rotation. . Therefore, by driving the slider 15a with an appropriate drive source such as an electric motor, the panel pair G12 can be bent into a V shape or extended in a straight line at the position of the first hinge member 14. That is, both the inclination angle θ1 of the first solar panel 10 and the inclination angle θ2 of the second solar panel 20 can be simultaneously changed through the change of the V-shaped bending angle. For example, if the slider 15a is moved downward, θ1 can be changed in the increasing direction and θ2 can be changed in the decreasing direction. Conversely, if the slider 15a is moved upward, θ1 is changed in the decreasing direction and θ2 is changed. Can be changed in an increasing direction.

  Therefore, if the slider 15a is gradually slid downward along the attachment target surface 3 from the state of FIG. 16A to the state of FIG. The inclination angle θ1 of the solar panel 10 can be gradually increased from θma larger than θm to θs, and this operation is reversed at the boundary of the summer solstice, that is, At the same time, if the slider 15a is gradually slid upward from the state of FIG. 16B to the state of FIG. 16A, the inclination angle θ1 of the first solar panel 10 can be gradually decreased from θs to θma. And thereby, the light-receiving surface 10a of the 1st solar panel 10 can be orient | assigned to the direction which sunlight injects at a right angle at the time of the south and middle over all the days of summer.

  On the other hand, if the slider 15a is gradually slid downward along the attachment target surface 3 from the state of FIG. 16A to the state of FIG. The inclination angle θ2 of the solar panel 20 can be gradually decreased from θmb smaller than θm to θw, and this operation is reversed at the winter solstice, that is, the passage of days from the winter solstice to the spring equinox. At the same time, if the slider 15a is gradually slid upward from the state of FIG. 16B to the state of FIG. 16A, the inclination angle θ2 of the second solar panel 20 can be gradually increased from θw to θmb. And thereby, the light-receiving surface 20a of the 2nd solar panel 20 can be orient | assigned to the direction which sunlight injects at a right angle at the time of the south and middle over all the days of winter.

  The plurality of panel pairs G12, G12... Are arranged in the direction along the same surface 3 on the attachment target surface 3 as shown in FIG. 15, but each panel pair G12, G12. When the tilt angles θ1 and θ2 are variably configured as described above, the arrangement pitch P12 of the panel pairs G12, G12... Arranged vertically in the direction along the same surface 3 on the attachment target surface 3 of the panel pair G12 is L1 + L2. It should be set to the above values. And if it sets in this way, at the time of the slide movement of the panel pair G12, it will be avoided effectively that the panel pair G12 and G12 which adjoins up and down interfere, and, thereby, the 1st solar panel 10 and the 2nd solar Each light receiving surface 10a, 20a of the optical panel 20 can smoothly rotate. As a result, the light receiving surfaces 10a and 20a can smoothly change the inclination angles θ1 and θ2, respectively.

  In the example of FIG. 15 described above, the slider 15a and the second hinge member 15b are provided with respect to the upper end edge 10eu of the first solar panel 10 so that the upper end edge 10eu is slidable. Although the third hinge member 16 is provided on the lower edge 20ed of the optical panel 20 so that the lower edge 20ed cannot slide, the present invention is not limited to this and may be reversed. That is, the upper edge 10eu of the first solar panel 10 is provided with a third hinge member 16 so that the upper edge 10eu cannot slide, and the lower edge 20ed of the second solar panel 20 has sliders 15a and A second hinge member 15b may be provided so that the lower end edge 20ed is slidable.

  Incidentally, the operation of the drive source such as the electric motor described above may be controlled by a control unit (not shown) such as an appropriate computer. In this case, the control unit has a storage unit such as a hard disk, and data in each position of the slider 15a is stored in the storage unit in association with each day of the year. Accordingly, the processor of the control unit transmits the rotation angle control signal to the drive source based on the data, whereby the daily inclination angles θ1 and θ2 are changed.

  In addition, when an electric motor is used as a drive source, power necessary for the operation of the electric motor may be covered by electric power generated by the first solar panel 10 or the second solar panel 20. In that case, for example, a storage battery (not shown) is provided so that electricity generated by the first solar panel 10 or the second solar panel 20 is stored in the storage battery, and power is supplied from the storage battery to the electric motor. It ’s fine.

<<< Third Aspect >>>
Finally, the third aspect will be described. In the third mode shown in FIG. 17, the substantially horizontal surface portion 6 of the building is the attachment target surface 3 as described above. In other words, the inclination angle α of the attachment target surface 3 is in the range of θs ≦ α <θw + 90 ° ( In Tokyo, an arbitrary value of 78 ° ≦ α <122 ° is set. And in the attachment object surface 3, several 1st solar panels 10,10 ... and several 2nd solar panels 20,20 ... are located in a line in the inside and outside of the side direction (north-south direction) in the shape of a louver. Is arranged.

  Here, the first solar panel 10 is abutted and fixed to the mounting target surface 3 at the outer edge 10es in the lateral direction and is cantilevered, that is, in the lateral direction from the outer edge 10es. The inner end edge 10en located inward of the mounting surface 3 is provided on the outer side in the normal direction of the attachment target surface 3, so that the inclination angle θ1 with respect to the lower side of the vertical surface As is set to θs. ing. Further, the second solar panel 20 is also cantilevered by being fixed to the mounting target surface 3 at the outer edge 20es in the lateral direction, that is, more lateral than the outer edge 20es. The inner end edge 20en located inward in the direction is provided to be located outward in the normal direction of the attachment target surface 3, so that the inclination angle θ2 with respect to the lower side of the vertical surface As is set to θw. Has been.

  Therefore, if the inclination angle α is an attachment target surface 3 that satisfies the condition of θs ≦ α <θw + 90 ° (78 ° ≦ α <122 ° in Tokyo), the first sunlight is applied to the attachment target surface 3. The panel 10 and the second solar panel 20 can be attached without any problem. Specifically, in the third aspect, in the case where α ≧ θw + 90 ° (a numerical example in Tokyo: α ≧ 122 °) in which α deviates from the above condition, as shown in FIG. 18A, the middle of the winter solstice At the time of winter elevation angle θw (in the Tokyo, θw = 32 °) which is the elevation angle θw of the sun at the time, a shadow of the attachment target surface 3 enters a part of the light receiving surface 20a of the second solar panel 20, which becomes a problem. In addition, in the case of θs> α (78 °> α in Tokyo) where α deviates from the above condition to the lower side, when the first solar panel 10 is attached to the attachment target surface 3, as shown in FIG. 18B. In addition, the side portion 10s in the lateral direction of the first solar panel 10 has to be embedded in the surface 3 to be attached, which is problematic because it cannot be easily attached. In this regard, these problems can be avoided if the above conditions are satisfied. That is, if the inclination angle α of the mounting target surface 3 satisfies the condition of θs ≦ α <θw + 90 ° (78 ° ≦ α <122 ° in Tokyo), the shadow of the mounting target surface 3 is reflected on the second solar panel 20. The first solar panel 10 can be reliably and easily attached to the attachment target surface 3 while avoiding the light receiving surface 20a.

  As shown in FIG. 17, a plurality of second solar panels 20, 20... Are provided on the attachment target surface 3, and each second solar panel 20 is adjacent to each other in the lateral direction. A space is provided between the optical panel 20 and the optical panel 20. Then, this interval may be set as follows. That is, as shown in FIG. 19, between the second solar panels 20 and 20 adjacent to each other in the lateral direction, between the outer edge 20 es and the inner edge 20 en of the outer second solar panel 20. When the length is L2, the outer edge 20es of the inner second solar panel 20 is inward in the direction along the attachment target surface 3 from the position of the outer edge 20es of the outer second solar panel 20. The distance D2 ′ (= L2 / cos (α−θw)) or more is preferably fixed. If it does so, it will be possible to avoid that the shadow of the 2nd solar panel 20 at the time of the south and middle will apply to the light-receiving surface 20a of the 2nd solar panel 20 adjacent to the inner side of a side direction throughout the year. Details are as follows.

  First, as can be understood with reference to FIG. 19, the mathematical expression L2 / cos (α−θw) relating to the distance D2 ′ is the second solar panel 20 formed on the attachment target surface 3 during the south solstice of the winter solstice. Represents the length of the shadow. And since the solar altitude of the winter solstice is the lowest in the year in the middle of the year, in the case of a shadow formed on the substantially horizontal surface portion 6 as in the third aspect, The length of the shadow in the south-central time is the longest of all the south-central hours of the year. Therefore, if the second solar panels 20 and 20 are separated from each other by a distance D2 ′ or more as described above, the shadow of the second solar panel 20 is adjacent to the inner side in the lateral direction. It is possible to avoid the light receiving surface 20a for all the south-central hours of the year, and as a result, the light-receiving surface 20a of the second solar panel 20 on the inner side is the second outside of the second solar panel 20 on the outer side for all the south-mid hours of the year. Freed from the influence of the shadow of the solar panel 20.

  In addition, in the example of FIG. 17, since the length L2 of the 2nd solar panel 20 is equal in the same dimension over all the 2nd solar panels 20, said distance D2 '(= L2 / cos ((alpha)). The value of −θw)) is the same for all the second solar panels 20, 20. And in the example of FIG. 17, all the 2nd solar panels 20, 20, ... are arrange | positioned as the arrangement | positioning pitch of the side direction on the attachment object surface 3 with predetermined value P2 'used as distance D2' or more. Thus, each of the second solar panels 20, 20... Is released from the influence of the shadow of the second solar panel 20 located on the outer side of the second solar panel 20 at the time of the south and middle.

  On the other hand, the first solar panels 10, 10. And in the example of FIG. 17, the 1st solar panel 10 is provided in the position between the 2nd solar panels 20 and 20 adjacent in a side direction. Here, the reason why the first solar panel 10 is provided at the same position is as follows. As shown in FIG. 20A, the position between the second solar panels 20 and 20 on the attachment target surface 3 is the second sunlight in the winter when the energy conversion efficiency of the second solar panel 20 is high. This is a portion where the shadow of the panel 20 is easily formed. Therefore, it becomes a dead space in winter. However, as shown in FIG. 20B, since the altitude of the sun is higher in the summer than in the winter, the shadow of the second solar panel 20 becomes smaller and it becomes difficult to make the shadow. Therefore, in the 1st solar panel 10 specialized in summer, it can be arrange | positioned in the position between 2nd solar panels 20 and 20, and if it arrange | positions, it will be sunlight with high energy conversion efficiency in summer. Therefore, the first solar panel 10 is disposed at a position between the second solar panels 20 and 20 for such a reason.

  In this example, as shown in FIG. 17, three first solar panels 10, 10, 10 as a plurality of examples are located on the side between the second solar panels 20, 20 adjacent in the lateral direction. Although arranged in the direction of the direction, it is not limited to this, and it may be one, two, or four or more. In the case where a plurality of first solar panels 10 are provided, the first solar panel is taken into consideration so that the influence of the shadow on the light receiving surface 10a is reduced as in the case of the second solar panel 20 described above. It is desirable that the distance between the ten and the ten is set.

  That is, as shown in FIG. 21, among the first solar panels 10 and 10 adjacent to each other in the lateral direction, the outer edge 10es and the inner edge 10en of the first solar panel 10 outside in the lateral direction. The outer edge 10es of the inner first solar panel 10 extends along the attachment target surface 3 from the position of the outer edge 10es of the outer first solar panel 10 when the length between the first solar panel 10 and the outer solar panel 10 is L1. It may be fixed at a position that is more than the distance D1 ′ (= L1 / cos (α−θs)) inward in the direction. If it does in this way, it can avoid that the shadow of the 1st solar panel 10 applies to the light-receiving surface 10a of the 1st solar panel 10 adjacent to the inner side at least in the middle of the summer solstice day. Become. Details are as follows.

  First, the mathematical expression L1 / cos (α−θs) relating to the distance D1 ′ is, as can be seen with reference to FIG. 21, the first solar panel 10 formed on the attachment target surface 3 at the time of the summer solstice. Represents the length of the shadow. Therefore, if the first solar panels 10 and 10 are separated from each other by a distance D1 ′ or more as described above, the light receiving surface of the first solar panel 10 adjacent to the inside of the shadow of the first solar panel 10 10a can be avoided at least in the middle and middle hours of the summer solstice day. As a result, the light receiving surface 10a of the first solar panel 10 on the inner side is on the outer side of the summer solstice day. It is released from the influence of the shadow of the first solar panel 10.

  In addition, in the example of FIG. 17, since the length L1 of the 1st sunlight panel 10 is equal in the same dimension over all the 1st sunlight panels 10,10 ..., said distance D1 '(= L1 /). The value of cos (α−θs) is the same for all the first solar panels 10, 10. In the example of FIG. 17, each first solar panel 10 between the second solar panels 20 and 20 has a predetermined value P1 ′ that is a distance D1 ′ or more in the lateral direction on the attachment target surface 3. The first solar panels 10, 10... Are thereby freed from the influence of the shadows of the first solar panels 10 located outside of themselves.

Further, when the area of the attachment target surface 3 has a margin, the above-described distance D1 ′ may be further expanded, that is, the distance D1 ′ may be set to a value obtained from the following expression 4.
D1 ′ = L1 × cos (α−θs)
+ L1 × tan (α−θm) × sin (α−θs) (4)

  Here, this Formula 4 has shown the length of the shadow of the 1st solar panel 10 formed on the attachment object surface 3 at the time of the middle of the spring equinox day or the autumn equinox day, as shown in FIG. And the length of the shadow of this spring equinox day or autumn equinox day is the longest in the summer in the middle of the summer. Therefore, the outer edge 10es of the first solar panel 10 on the inner side in the lateral direction is inward in the direction along the attachment target surface 3 from the position of the outer edge 10es of the outer first solar panel 10. If fixed at a position that is more than the distance D1 ′, the shadows of the first solar panel 10 are adjacent to each other inward in the lateral direction over the entire summer time in the summer. It is possible to avoid the light receiving surface 10a. As a result, it is possible to effectively increase the amount of power generation in summer by effectively using the first solar panel 10 specialized in summer. The above equation 4 can be obtained from the geometric relationship of FIG.

  By the way, when the 1st solar panel 10 is arrange | positioned between the 2nd solar panels 20 and 20 as mentioned above, the shadow of the 2nd solar panel 20 is light reception of the 1st solar panel 10. There is a possibility that the surface 10a may be applied, or the shadow of the first solar panel 10 may be applied to the light receiving surface 20a of the second solar panel 20. For example, when the first solar panel 10 is located next to the inner side in the lateral direction of the second solar panel 20, the shadow of the second solar panel 20 is received by the first solar panel 10. If the second solar panel 20 is located next to the inner side in the lateral direction of the first solar panel 10, the shadow of the first solar panel 10 may occur. May be applied to the light receiving surface 20a of the second solar panel 20.

  Therefore, regarding the positional relationship between the first solar panel 10 and the second solar panel that are adjacent to each other in the lateral direction, the first sunlight is similarly considered in consideration of the influence of the shadow on the light receiving surfaces 10a and 20a. It is desirable to set the distance between the panel 10 and the second solar panel 20. Below, when the 2nd solar panel 20 is located next to the inner side of the 1st solar panel 10 like FIG. 23A, the lower limit of the distance which should be separated between each other is referred to as “distance D12. ”, And when the first solar panel 10 is positioned next to the inner side of the second solar panel 20 as shown in FIG. Say “Distance D21 ′”.

First, the distance D12 ′ will be described with reference to FIG. 23A. The second solar panel 20 should generate power effectively in winter. In addition, the longest shadow of the first solar panel 10 during the winter season is the day of the winter solstice. This longest length can be obtained from the geometric relationship by replacing “θm” in the above-mentioned formula 4 with θw, and since the longest length corresponds to the distance D12 ′, the distance D12 ′ is expressed by the following formula 5.
D12 ′ = L1 × cos (α−θs)
+ L1 × tan (α−θw) × sin (α−θs) (5)

  Therefore, the outer edge 20es of the second solar panel 20 on the inner side in the lateral direction is a distance D12 from the position of the outer edge 10es of the outer first solar panel 10 to the inner side in the direction along the attachment target surface 3. If it is fixed at a position more than or equal to, the shadow of the first solar panel 10 is applied to the light receiving surface 20a of the second solar panel 20 adjacent to the inner side of the second solar panel 20 during It is possible to avoid it.

Next, the distance D21 ′ will be described with reference to FIG. 23B. The first solar panel 10 should effectively generate power in the summer. In addition, the longest shadow of the second solar panel 20 during the summer time in the summer is on a spring equinox day or an autumn equinox day. The longest length can be obtained by replacing “θs” in Equation 4 with θw and replacing “L1” in Equation 4 with L2, which is the distance D21. Since this corresponds to ', the distance D21' is expressed by the following formula 6.
D21 ′ = L2 × cos (α−θw)
+ L2 × tan (α−θm) × sin (α−θw) (6)

  Therefore, the outer edge 10es of the inner first solar panel 10 is separated from the position of the outer edge 20es of the second outer solar panel 20 by an inner distance D21 ′ or more in the direction along the attachment target surface 3. If it is fixed at the position, it is possible to avoid the shadow of the second solar panel 20 from being applied to the light receiving surface 10a of the first solar panel 10 adjacent to the inner side of the solar panel 20 throughout the summer. It becomes.

  As specific examples of the mounting target surface 3 according to the third aspect, that is, the substantially horizontal surface portion 6, basically, a horizontal roof portion of a building, a roof portion inclined at a gentle slope, a horizontal skylight portion, An example is the skylight that slopes at a slope. However, the attachment target surface 3 may be a virtual surface that does not actually exist. For example, when the glass plate 9 is used as a substitute for the roof portion as in a glass-walled building, the first solar panels 10, 10... Are located on the indoor side of the glass plate 9 shown in FIG. It is assumed that the second solar panels 20, 20. In such a case, the solar panels 10 and 20 may be supported by an appropriate stay member (not shown) provided on the indoor pillar or beam 8b, which corresponds to the attachment target surface 3. However, in this case, the attachment target surface 3 may be considered as a virtual surface.

  By the way, in the above-described example, the inclination angle θ1 of the light receiving surface 10a of the first solar panel 10 is set to a fixed value equal to the summer supremacy angle θs, and the inclination angle θ2 of the light receiving surface 20a of the second solar panel 20 is set to the winter solstice. Although the fixed value is the same as the elevation angle θw, it is not limited to this. That is, as described above, the inclination angle θ1 of the first solar panel 10 may be set to an arbitrary value within the range of θm <θ1 ≦ θs (55 ° <θ1 ≦ 78 ° in Tokyo). The inclination angle θ2 of the second solar panel 20 may also be set to an arbitrary value as long as it is in the range of θw ≦ θ2 <θm (32 ° ≦ θ1 <55 ° in Tokyo). If each is set within this range, in the summer, the sunlight is incident on the light receiving surface 10a of the first solar panel 10 at an incident angle closer to a right angle, while in the winter, the second sun Sunlight is incident on the light receiving surface 20a of the optical panel 20 at an incident angle nearer to a right angle, so that the first solar panel 10 and the second solar panel 20 are specially adapted for power generation in summer and winter, respectively. It becomes a thing.

  Further, the inclination angle θ1 of the first solar panel 10 and the inclination angle θ2 of the second solar panel 20 may be changed every day. For example, as shown in the schematic side view of FIG. 25, the inclination angle θ1 is gradually increased from a predetermined angle θma slightly larger than θm to θs with the passage of days from the spring equinox day to the summer solstice day. This operation may be reversed at the boundary, that is, it may be gradually decreased from θs to θma with the passage of days from the day of summer solstice to the day of autumn. Similarly, the inclination angle θ2 is also gradually decreased from θmb slightly smaller than θm to θw with the passage of days from the autumn day to the winter solstice day, while this operation is reversed at the winter solstice. That is, it may be gradually increased from θw to θmb with the passage of days from the winter solstice day to the spring equinox day.

  And if it changes in this way, while being able to orient | assign the light-receiving surface 10a of the 1st solar panel 10 to the direction which sunlight injects at a right angle at the time of the south and middle over all the days of summer, The light receiving surface 20a of the second solar panel 20 can be oriented in such a direction that sunlight enters at a right angle during the south and middle hours throughout the winter. As a result, the energy conversion efficiency of the photovoltaic power generator can be further increased.

  In the winter period from the autumn day to the winter solstice through the winter solstice, the inclination angle θ1 of the first solar panel 10 may be fixed to a predetermined angle in a range of θm <θ1 ≦ θs, for example. In the summer period from the spring equinox day through the summer solstice to the autumn equinox day, the inclination angle θ2 of the first solar panel 10 may be fixed at a predetermined angle in the range of θw ≦ θ2 <θm, for example.

Thus, as a change mechanism (equivalent to a 3rd change mechanism) which changes inclination-angle (theta) 1 of the 1st solar panel 10, as shown in FIG. 25, the outer edge 10es of the 1st solar panel 10 is made into a rotating shaft. A shaft support member 18 such as a hinge member that is rotatably supported, a drive source (not shown) such as an electric motor that rotates the first solar panel 10 around the outer end edge 10es, and a computer that controls the drive source And a control unit (not shown). Similarly, as a changing mechanism (corresponding to a fourth changing mechanism) for changing the inclination angle θ2 of the second solar panel 20, a hinge that rotatably supports the outer edge 20es of the second solar panel 20 as a rotation axis. A shaft support member 28 such as a member, a drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the outer edge 20es, and a control unit (not shown) such as a computer that controls the drive source. Can be illustrated.
And in any of the control units, it has a storage unit such as a hard disk, and in the same storage unit, the data of the inclination angle θ1 of each day or the inclination of each day in association with each day of the year. Data on the angle θ2 is stored. Accordingly, the processor of the control unit transmits the rotation angle control signal to the drive source based on the data, whereby the daily inclination angles θ1 and θ2 are changed.

  In any of these changing mechanisms, when an electric motor is used as a drive source, the first solar panel 10 or the second solar panel 20 generates power necessary for the operation of the electric motor. It may be covered by the electric power. In that case, for example, a storage battery is provided, electricity generated by the first solar panel 10 or the second solar panel 20 is stored in the storage battery, and power is supplied from the storage battery to the electric motor.

=== Other Embodiments ===
As mentioned above, although embodiment of this invention was described, said embodiment is for making an understanding of this invention easy, and is not for limiting and interpreting this invention. Further, the present invention can be changed or improved without departing from the gist thereof, and needless to say, the present invention includes equivalents thereof. For example, the following modifications are possible.

  In the above-described embodiment, the attachment target surface 3 is set in a building as an example of a structure, but the present invention is not limited to this. For example, the ground may be the attachment target surface 3, or the upper surface of a foundation constructed on the ground may be the attachment target surface 3.

  In the above-mentioned embodiment, the 2nd solar panel is arrange | positioned in the position between 1st solar panels 10 and 10, or the 1st sun is in the position between 2nd solar panels 20 and 20. Although the light panel 10 was arrange | positioned at all, it is not restricted to this at all, The 2nd solar panel 20 does not need to be arrange | positioned in the position between 1st solar panels 10 and 10, 1st. The 1 solar panel 10 may not be arranged at a position between the second solar panels 20 and 20. For example, next to a first solar panel group in which a plurality of first solar panels 10, 10... Are arranged at a predetermined pitch, a plurality of second solar panels 20, 20. A solar panel group may be arranged.

  In the 1st aspect of the above-mentioned embodiment, as an example of a structure of the 1st, 2nd solar panels 10 and 20 attached to the attachment object surface 3 in which the inclination angle α is in the range of θs−90 ° <α ≦ θw, FIG. As described above, the configuration in which the upper end edge 10eu of the first solar panel 10 and the upper end edge 20eu of the second solar panel 20 are in contact with and fixed to the attachment target surface 3 is shown, but the present invention is not limited to this. For example, even if the configuration such as the panel pair G12 having the V-shaped cross section described in FIG. 12A is attached to the attachment target surface 3 in the range of the inclination angle α (θs−90 ° <α ≦ θw) according to the first aspect. good. Specifically, as shown in the schematic side view of FIG. 26, the upper end edge 10eu of the first solar panel 10 is abutted and fixed to the attachment target surface 3, and the lower end edge 10eu of the first solar panel 10 is set to the second position. By connecting to the upper edge 20eu of the solar panel 20, the solar panel pair G12 having a V-shaped cross section may be formed. In addition, although the lower end edge 20ed of the 2nd solar panel 20 which is the lower end edge 20ed of this panel pair G12 is in the state which floated away from the attachment object surface 3, this is the state of the 1st solar panel 10. This is because the inclination angle θ1 of the light receiving surface 10a is set to the summer elevation angle θs, and the inclination angle θ2 of the light reception surface 20a of the second solar panel 20 is set to the winter elevation angle θw. In this case as well, a plurality of panel pairs G12, G12... Are arranged at a predetermined pitch above and below in the direction along the attachment target surface 3, whereby the first solar panel 10 and the second sunlight. The panels 20 are alternately arranged in the vertical direction.

  Further, also in the configuration of the panel pair G12, the inclination angle θ1 and the inclination angle θ2 are changed every day in the range of θm <θ1 ≦ θs and the range of θw ≦ θ2 <θm, respectively, as described above with reference to FIG. Also good. As a configuration example for realizing this, for example, the following can be cited. That is, in the configuration example of FIG. 26, the shaft support member 12 such as a hinge member that supports the first solar panel 10 so as to be rotatable about the upper end edge 10eu of the first solar panel 10 as a rotation axis, and the upper end edge 10eu. A drive source (not shown) such as an electric motor that rotates the first solar panel 10 around, and an upper end edge 20eu of the second solar panel 20 on the lower end edge 10ed of the first solar panel 10 A hinge member 31 that is connected around the upper edge 20eu, a drive source (not shown) such as an electric motor that rotates the second solar panel 20, and a computer that controls these drive sources. And a control unit (not shown). As the control unit, since the same configuration as that described in the first aspect is applicable, the description thereof is omitted.

  In the 3rd aspect of the above-mentioned embodiment, as a structural example of the 1st and 2nd solar panels 10 and 20 attached to the attachment object surface 3 in which the inclination angle α is in the range of θs ≦ α <θw + 90 °, as shown in FIG. Although the configuration in which the outer edge 20es of the second solar panel 20 and the outer edge 10es of the first solar panel 10 are in contact with and fixed to the attachment target surface 3 is shown, the present invention is not limited to this. For example, the configuration like the panel pair G12 having the V-shaped cross section described above with reference to FIG. 12B may be attached to the attachment target surface 3 in the range of the inclination angle α (θs ≦ α <θw + 90 °) according to the third aspect. Specifically, as shown in the schematic side view of FIG. 27, the outer edge 20es of the second solar panel 20 is abutted and fixed to the surface 3 to be attached, and the inner edge 20en of the second solar panel 10 is fixed. By connecting to the outer edge 10es of the first solar panel 10, a panel pair G12 having a V-shaped cross section may be formed. In addition, although the inner end edge 10en of the 1st solar panel 10 which is the inner end edge 10en of this panel pair G12 is in the state which floated away from the attachment object surface 3, this is the 2nd solar panel. This is because the inclination angle θ2 of the 20 light receiving surfaces 20a is set to the winter elevation angle θw, and the inclination angle θ1 of the light reception surface 10a of the first solar panel 10 is set to the summer elevation angle θs. In this case as well, a plurality of panel pairs G12, G12,... Are arranged side by side at a predetermined pitch on the inside and outside in the lateral direction along the attachment target surface 3. The second solar panels 20 are arranged alternately in the lateral direction.

  Further, also in the configuration of the panel pair G12, the inclination angle θ1 and the inclination angle θ2 are changed every day in the range of θm <θ1 ≦ θs and the range of θw ≦ θ2 <θm, respectively, as described above with reference to FIG. Also good. As a configuration example for realizing this, for example, the following can be cited. That is, in the configuration example of FIG. 27, the pivot member 13 such as a hinge member that rotatably supports the second solar panel 20 with the outer edge 20es of the second solar panel 20 as a rotation axis, and the outer end. A drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the edge 20es and an outer edge 10es of the first solar panel 10 on the inner edge 20en of the second solar panel 20 A hinge member 32 connected to the periphery of the outer edge 10es so as to be relatively rotatable, a drive source (not shown) such as an electric motor for rotating the first solar panel 10 around the outer edge 10es, and these drive sources And a control unit (not shown) such as a computer for controlling the computer. As the control unit, the same configuration as that described in the third aspect can be applied, and the description thereof is omitted.

In the second aspect of the above-described embodiment, as a configuration example of the first and second solar panels 10 and 20 that are attached to the attachment target surface 3 having an inclination angle α in the range of θw <α <θs, a panel as shown in FIG. The pair G12 is shown, and both end edges 10eu and 20ed of the panel pair G12 are fixed to the surface to be attached 3 in order to improve the support stability. However, the present invention is not limited to this.
For example, as shown in FIGS. 28 and 29, only one end edge 10eu (20ed) of both end edges 10eu and 20ed of the panel pair G12 is abutted and fixed to the attachment target surface 3, and the other end edge is fixed. 20ed (10eu) may be floated away from the attachment target surface 3. In the example of FIG. 28, the upper edge 10eu is abutted and fixed to separate the lower edge 20ed, and in the example of FIG. 29, the lower edge 20ed is abutted and fixed to separate the upper edge 10eu. And if it does in this way, although support stability will worsen, it will become interesting in design.

Also in the configuration of the panel pair G12, the inclination angle θ1 and the inclination angle θ2 may be changed every day in a range of θm <θ1 ≦ θs and a range of θw ≦ θ2 <θm, respectively. As a configuration example for realizing this, for example, the following can be cited.
First, the configuration example of FIG. 28 will be described. In the case of this configuration example, a shaft such as a hinge member that rotatably supports the first solar panel 10 with the upper end edge 10eu of the first solar panel 10 as a rotation axis. The supporting member 12, a drive source (not shown) such as an electric motor that rotates the first solar panel 10 around the upper edge 10eu, and the second solar panel 20 on the lower edge 10ed of the first solar panel 10. A hinge member 14 that connects the upper edge 20eu of the second solar panel 20 around the upper edge 20eu, and a drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the upper edge 20eu. And a control unit (not shown) such as a computer for controlling these drive sources. As the control unit, since the same configuration as that described in the first aspect is applicable, the description thereof is omitted.

  On the other hand, in the case of the configuration example of FIG. 29, the pivot member 13 such as a hinge member that rotatably supports the second solar panel 20 with the lower end edge 20ed of the second solar panel 20 as the rotation axis, and the lower end A drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the edge 20ed, and the lower end edge 10ed of the first solar panel 10 on the upper end edge 20eu of the second solar panel 20 A hinge member 14 that is rotatably coupled around the edge 10ed, a drive source (not shown) such as an electric motor that rotates the first solar panel 10 around the lower edge 10ed, and a computer that controls these drive sources And a control unit (not shown). As the control unit, since the same configuration as that described in the first aspect is applicable, the description thereof is omitted.

  Furthermore, in the 2nd aspect of the above-mentioned embodiment, as shown in FIG. 11, the 1st solar panel 10 and the 2nd solar panel 10 were connected and made the panel pair G12. Rather, it may not be connected. That is, in the example of the schematic side view of FIG. 30, the lower end edge 10ed of the first solar panel 10 and the upper end edge 20eu of the second solar panel 20 are not connected, and are provided at a distance from each other. However, this may be used. However, also in this unconnected configuration, as in the case of the panel pair G12 described above, the first solar panel 10 and the second solar panel 20 are alternately arranged in the vertical direction along the attachment target surface 3. It is possible (see FIG. 30), and according to this configuration, when the first solar panel 10 and the second solar panel 20 that are adjacent to each other are considered as one panel set G12 ′ Furthermore, the panel set G12 ′ has a cross-sectional shape as shown in FIG. 30 and is interesting in design.

  In the configuration of the panel set G12 ', the inclination angle θ1 and the inclination angle θ2 may be changed every day in the range of θm <θ1 ≦ θs and the range of θw ≦ θ2 <θm, respectively. As a configuration example for realizing this, for example, the following can be cited. That is, in the example of FIG. 30, the shaft support member 12 such as a hinge member that rotatably supports the first solar panel 10 with the upper end edge 10eu of the first solar panel 10 as a rotation axis, and the periphery of the upper end edge 10eu. A drive source (not shown) such as an electric motor that rotates the first solar panel 10 and a hinge that rotatably supports the second solar panel 20 with the lower end edge 20ed of the second solar panel 20 as a rotation axis. A shaft support member 13 such as a member, a drive source (not shown) such as an electric motor that rotates the second solar panel 20 around the lower edge 20ed, and a control unit (not shown) such as a computer that controls these drive sources. (Shown). As the control unit, since the same configuration as that described in the first aspect is applicable, the description thereof is omitted.

3 surface to be attached, 4 substantially vertical surface portion, 5 substantially slope portion, 6 substantially horizontal surface portion,
8a pillar, 8b beam, 9 glass plate,
10 1st sunlight panel (1st sunlight member), 10a Light-receiving surface,
10eu upper edge, 10ed lower edge, 10es outer edge, 10en inner edge,
10s inner part,
12 shaft support members, 13 shaft support members,
14 1st hinge member (1st connection part),
15a slider (second connecting part), 15b second hinge member (second connecting part),
16 3rd hinge member (3rd connection part),
18 shaft support member,
20 second solar panel (second solar member), 20a light receiving surface,
20eu upper edge, 20ed lower edge, 20es outer edge, 20en inner edge,
20d bottom,
22 shaft support members, 28 shaft support members,
31 hinge member, 32 hinge member,
G12 Panel pair (solar member pair),
G12 'panel set,
As vertical plane, W window,

Claims (18)

In the solar power generation apparatus including the solar light member having a light receiving surface that receives sunlight, which is a plurality of solar light members provided on a surface to be attached whose inclination angle with respect to the lower side of the vertical surface is α,
The elevation angle with respect to the south of the sun during the summer solstice is the summer elevation angle θs, and the elevation angle with respect to the south of the winter solstice is the winter elevation angle θw. Is the spring / autumn elevation angle θm,
A first solar member in which an inclination angle θ1 of the light receiving surface with respect to a lower side of the vertical plane is set to an arbitrary angle within a range that is greater than the spring-autumn elevation angle θm and equal to or less than the summer elevation angle θs (θm <θ1 ≦ θs);
A second solar member in which the inclination angle θ2 of the light receiving surface with respect to the lower side of the vertical plane is set to an arbitrary angle in a range (θw ≦ θ2 <θm) that is equal to or greater than the winter elevation angle θw and smaller than the spring and autumn elevation angle θm; A solar power generation device comprising: It is a solar power generation device according to claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θs−90 ° <α ≦ θw) that is greater than the summer elevation angle θs−90 ° and less than or equal to the winter elevation angle θw.
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
A solar power generation device, wherein a lower end edge is provided outside an upper end edge of the second solar light member in a normal direction of the attachment target surface. It is a solar power generation device according to claim 2,
A plurality of the first sunlight members are provided in the vertical direction on the attachment target surface, and each of the plurality of first sunlight members is fixed with an upper end edge in contact with the attachment target surface. Has been
Among the first sunlight members adjacent in the vertical direction, when the length between the upper edge and the lower edge of the upper first sunlight member is L1,
The upper end edge of the lower first sunlight member is located at a position away from the position of the upper end edge of the upper first sunlight member by L1 / cos (θs−α) or more downward in the direction along the attachment target surface. A solar power generation device characterized by being fixed. It is a solar power generation device according to claim 2 or 3,
A plurality of the second sunlight members are provided in the vertical direction on the attachment target surface, and each of the plurality of second sunlight members is fixed with an upper end edge in contact with the attachment target surface. Has been
Among the second sunlight members adjacent in the vertical direction, when the length between the upper edge and the lower edge of the upper second sunlight member is L2,
The upper end edge of the lower second sunlight member is located at a position away from the position of the upper end edge of the upper second sunlight member by L2 / cos (θw−α) or more downward in the direction along the attachment target surface. A solar power generation device characterized by being fixed. It is a solar power generation device in any one of Claims 2 thru | or 4,
The solar power generator, wherein the second solar member is disposed between the first solar members adjacent in the vertical direction. It is a solar power generation device according to claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °). When the inclination state where the lower end position is located outward in the lateral direction along the normal direction of the vertical plane is defined as a positive value (α> 0),
The inclination angle α is set to an arbitrary angle within a range (θw <α <θs) that is larger than the winter altitude angle θw and smaller than the summer altitude angle θs,
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
The solar power generation device, wherein an upper end edge of the second solar light member is provided at an outer side in a normal direction of the attachment target surface than a lower end edge of the second solar light member. It is a solar power generation device according to claim 1,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θw <α <θs) that is larger than the winter altitude angle θw and smaller than the summer altitude angle θs,
The lower end edge is provided outside the upper end edge of the first sunlight member and is located outside the normal direction of the attachment target surface.
The upper end edge is provided outside the lower end edge of the second sunlight member, and is located outside the normal direction of the attachment target surface.
A first changing mechanism that changes the tilt angle θ1 of the light receiving surface of the first sunlight member within a range (θm <θ1 ≦ θs) that is larger than the spring / autumn elevation angle θm and less than or equal to the summer elevation angle θs;
And a second changing mechanism that changes the inclination angle θ2 of the light receiving surface of the second sunlight member within a range (θw ≦ θ2 <θm) that is equal to or larger than the winter elevation angle θw and smaller than the spring and autumn elevation angle θm. A solar power generation device. It is a solar power generation device according to claim 7,
As the first change mechanism and the second change mechanism,
A first connecting portion that connects a lower end edge of the first solar light member and an upper end edge of the second solar light member while allowing relative rotation of each other;
One end edge of the upper end edge of the first sunlight member and the lower end edge of the second sunlight member is vertically moved in the direction along the attachment target surface while allowing relative rotation with the attachment target surface. A second connecting portion that is slidably connected;
The other end edge of the upper end edge of the first sunlight member and the lower end edge of the second sunlight member is vertically moved in the direction along the attachment target surface while allowing relative rotation with the attachment target surface. A third connecting part that is slidably movable;
And a driving source for slidingly moving the one end edge. It is a solar power generation device of Claim 8, Comprising:
The first solar member and the second solar member connected to each other form a solar member pair,
A plurality of the solar member pairs are provided on the attachment target surface at a predetermined pitch along the top and bottom in the direction along the attachment target surface,
When the length between the upper edge and the lower edge of the first sunlight member is L1, and the length between the upper edge and the lower edge of the second sunlight member is L2,
The said predetermined pitch is set to the value more than L1 + L2, The solar power generation device characterized by the above-mentioned. It is a solar power generation device according to claim 1,
The inclination angle θ1 of the light receiving surface of the first sunlight member is set to the same value as the summer elevation angle θs,
The inclination angle θ2 of the light receiving surface of the second sunlight member is set to the same value as the winter elevation angle θw,
With respect to the inclination angle α of the attachment target surface with respect to the lower side of the vertical surface, a state in which the attachment target surface is parallel to the lower side of the vertical surface is defined as 0 ° (α = 0 °), and the upper end position on the attachment target surface When the inclination state is defined as a positive value (α> 0) such that the lower end position is located outward in the lateral direction along the normal direction of the vertical plane,
The inclination angle α is set to an arbitrary angle within a range (θs ≦ α <θw + 90 °) which is not less than the summer elevation angle θs and smaller than the winter elevation angle θw + 90 °,
The inner end edge in the lateral direction is located outside the outer end edge in the lateral direction of the first sunlight member, and is located outward in the normal direction of the attachment target surface.
The inner end edge in the lateral direction is provided outside the outer end edge in the lateral direction of the second sunlight member and is located outward in the normal direction of the attachment target surface. A featured solar power generator. It is a solar power generation device according to claim 10,
A plurality of the second sunlight members are provided side by side in the lateral direction on the attachment target surface, and each of the plurality of second sunlight members has an outer edge in the lateral direction. It is fixed in contact with the mounting target surface,
Among the second sunlight members adjacent in the lateral direction, when the length between the outer edge and the inner edge of the second sunlight member outside the lateral direction is L2. ,
The outer edge of the second solar member on the inner side in the lateral direction is L2 / cos (α−) inward in the direction along the attachment target surface from the position of the outer edge of the second solar member on the outer side. θw) A photovoltaic power generation device that is fixed at a position separated by at least. It is a solar power generation device according to claim 10 or 11,
A plurality of the first sunlight members are provided side by side in the lateral direction on the attachment target surface, and each of the plurality of first sunlight members has an outer edge in the lateral direction. It is fixed in contact with the mounting target surface,
Among the first sunlight members adjacent in the lateral direction, when the length between the outer edge and the inner edge of the first sunlight member outside the lateral direction is L1. ,
The outer edge of the first solar member on the inner side in the lateral direction is L1 / cos (α−) from the position of the outer edge of the first solar member on the outer side inward in the direction along the attachment target surface. A photovoltaic power generation apparatus characterized by being fixed at a position separated by θs) or more. It is a solar power generation device in any one of Claims 10 thru | or 12, Comprising:
The solar power generator, wherein the first solar light member is disposed between the second solar light members adjacent in the lateral direction. It is a solar power generation device according to claim 1,
A third changing mechanism for changing the inclination angle θ1 of the light receiving surface of the first sunlight member within a range that is larger than the spring / autumn elevation angle θm and less than or equal to the summer elevation angle θs (θm <θ1 ≦ θs); A featured solar power generator. It is a solar power generation device according to claim 1 or 14,
A fourth changing mechanism that changes the inclination angle θ2 of the light receiving surface of the second solar light member within a range (θw ≦ θ2 <θm) that is greater than the winter elevation angle θw and smaller than the spring / autumn elevation angle θm. A featured solar power generator. It is a solar power generation device according to claim 7,
The driving power source operates using electricity generated by the first solar light member or the second solar light member as power. The solar power generation device according to claim 14,
The third changing mechanism has an electric drive source for changing an inclination angle θ1 of the first solar member,
The driving power source operates using electricity generated by the first solar light member or the second solar light member as power. The solar power generation device according to claim 15,
The fourth changing mechanism has an electric drive source for changing an inclination angle θ2 of the second sunlight member,
The driving power source operates using electricity generated by the first solar light member or the second solar light member as power.