JP6061781B2 - Louver device - Google Patents

Description

  The present invention relates to a louver device that adjusts the direction and amount of sunlight incident from a window of a building.

  Conventionally, a louver device has been provided on the outdoor side of a window part of a building to adjust the amount of solar radiation from the window part or to block the line of sight from the outside.

  For example, Patent Document 1 is a louver device that is attached to an opening and is capable of blocking solar radiation or line of sight, and has a plurality of angle members arranged in parallel in the opening, and the plurality of angle members are: Each of the plurality of angle members can be rotated and rotated in a direction perpendicular to the longitudinal direction, and can be extended and stacked. There is disclosed a louver device characterized in that each angle member includes one surface that can block solar radiation and another surface that can simultaneously block the line of sight when the one surface blocks solar radiation.

JP 2010-168854 A (Claim 1)

  However, in the louver device described in Patent Document 1, for example, it is possible to prevent glare by blocking solar radiation, or to suppress an increase in room temperature in summer and to suppress the power consumption of the air conditioning equipment. Since the room becomes dark, the power consumption of the lighting equipment increases and the energy saving effect decreases.

  The present invention has been made in view of these problems, and an object of the present invention is to provide a louver device capable of guiding solar radiation to the window side and the back side of an indoor ceiling while suppressing glare. .

  The present invention provides a plurality of reflective fins that are arranged in parallel with an interval in the vertical direction on the outside of a window portion of a building, with the longitudinal direction being transverse, and reflecting irradiated sunlight toward the ceiling inside the building, A plurality of light-shielding fins that are arranged below and in parallel to each other vertically below the reflecting fins, with the longitudinal direction being laterally arranged on the outside of the window portion of the building, and shielding the irradiated sunlight; and And a rotating means for rotating the plurality of light shielding fins in the vertical direction, wherein the light shielding fins are pivotally supported around a rotational axis in the horizontal direction. In addition, the reflective fin is formed in a substantially square shape in a sectional view in which the building side is a concave surface and the opposite side to the building is a convex surface, and the reflection fin is rotatable about a horizontal rotation axis; The fixed part located on the building side of the part, The rotating portion includes an upper surface extending in an opposite direction to the building from an end portion on the fixed portion side, and a lower side from an end portion on the upper surface opposite to the building and on the building side. And the upper surface of the fixed portion is inclined so as to be located upward from the end portion on the rotating portion side toward the building side, and the rotating means includes: The plurality of light shielding fins are rotated in the vertical direction in the same phase, and the plurality of rotating portions are rotated in the vertical direction in synchronization with the light shielding fins.

  According to such a structure, since the said rotation part has the upper surface extended in the opposite direction to the said building from the edge part on the said fixed part side, according to the irradiation direction of sunlight, a rotation part By rotating, the sunlight irradiated on the upper surface of the rotating part can be reflected toward the ceiling. Moreover, since the rotation part has the front surface extended from the edge part on the opposite side to the said building of the said upper surface and the building side, when the front surface is provided at right angles with respect to the upper surface As compared with the above, it is possible to increase the amount of sunlight that hits the upper surface of the rotating portion. In addition, the plurality of reflection fins are arranged in parallel with a space therebetween in the vertical direction, and the rotating means rotates the plurality of rotating portions in the vertical direction in the same phase. Sunlight reflected on the upper surface of the rotating portion of the reflective fin disposed on the relatively upper side of the fin illuminates a portion of the ceiling close to the window, and is disposed on the relatively lower side of the plurality of reflective fins. The sunlight reflected on the upper surface of the rotating part of the fin illuminates a portion of the ceiling that is relatively far from the window. Thereby, the ceiling becomes bright overall, and the amount of illumination used can be suppressed.

  Further, the rotating portion has a front surface extending downward and toward the building from the end of the upper surface opposite to the building, and the upper surface of the fixed portion is extended from the end of the rotating portion to the building. Since it is inclined so as to be located upward as it goes to the side, the distance between the reflective fins arranged vertically (the vertical distance between the lower end of the front surface of the upper rotating part and the upper end of the lower fixing part) ) Becomes smaller. Therefore, when sunlight is irradiated at a shallow angle with respect to the horizontal direction (for example, when the sun is low), the amount of sunlight that passes between the lower end of the front surface of the rotating unit and the upper end of the fixed unit is reduced, resulting in dazzling. Can be reduced. Further, in this case, the sunlight reflected on the front surface of the rotating portion is directed downward, and further reflected on the upper surface of the rotating portion disposed below to illuminate the ceiling. Moreover, the sunlight irradiated to the front surface of the fixed part reflects obliquely upward to illuminate the ceiling. Thereby, for example, even when the solar altitude is low, the amount of illumination used can be suppressed by brightening the ceiling while suppressing glare.

  Furthermore, according to such a structure, since the several light shielding fin is arrange | positioned below the reflection fin, the glare of the person in the room of a building can be reduced. Further, since the light shielding fins are bent and formed in a substantially square shape in a cross-sectional view, the gap between the light shielding fins can be made larger than when the light shielding fins are not bent. In addition, the rotating means rotates the plurality of light shielding fins in the vertical direction in the same phase, and rotates the plurality of rotating portions in the vertical direction in synchronization with the light shielding fins. Sunlight can be suitably taken into the room by the reflection fins while shielding the light.

  In the present invention, it is preferable that the rotation means rotate the plurality of rotation portions in the vertical direction at a rotation angle that is approximately ½ of the light shielding fin. If it does in this way, sunlight can be taken in indoors more suitably by a reflective fin, shielding sunlight with a light shielding fin.

  Moreover, in this invention, it is preferable that the upper surface of the said rotation part is curving concavely. According to such a configuration, the light beam applied to the upper surface of the rotating unit can be efficiently reflected obliquely upward.

  In the present invention, the light-shielding fin has a photovoltaic power generation element in the first half of the convex surface, and the rotating means is arranged so that the first half of the convex surface is orthogonal to the irradiation angle of sunlight. It is preferable to rotate the light shielding fin.

  According to such a configuration, the light shielding fin has a photovoltaic power generation element in the first half of the convex surface, and the rotating means is so that the first half of the convex surface is orthogonal to the irradiation angle of sunlight. Since the light shielding fin is rotated, the power generation efficiency can be increased.

  ADVANTAGE OF THE INVENTION According to this invention, the louver apparatus which can guide solar radiation to the window side and back | inner side of an indoor ceiling can be provided, suppressing glare.

It is sectional drawing of the building provided with the louver apparatus which concerns on this embodiment. It is an expanded sectional view of a reflective fin. It is an expanded sectional view of a light-shielding fin. It is explanatory drawing for demonstrating operation | movement of a reflective fin. It is explanatory drawing for demonstrating operation | movement of a reflective fin. It is explanatory drawing for demonstrating operation | movement of a reflective fin. It is explanatory drawing for demonstrating operation | movement of a light shielding fin. It is explanatory drawing for demonstrating operation | movement of a light shielding fin. It is explanatory drawing for demonstrating operation | movement of a light shielding fin.

  A first embodiment of the present invention will be described in detail with reference to the drawings. In the description, the same elements are denoted by the same reference numerals, and redundant description is omitted. The direction will be described with reference to the top and bottom shown in each figure. In the description, the direction orthogonal to the paper surface of FIG.

FIG. 1 is a cross-sectional view of a building including a louver device according to the present embodiment.
As shown in FIG. 1, the building 1 partitions a room 11, an outer wall 12 that partitions the room 11 from the outside, a window 13 that is an opening provided in the outer wall 12, and an upper floor and a lower floor. The floor slab 14, the ceiling 15 suspended and supported on the lower surface of the floor slab 14 on the upper floor, and the louver device 2 installed on the outdoor side of the outer wall 12 are provided. The window portion 13 is provided in a range from an intermediate portion in the vertical direction of the outer wall 12 (for example, the height of a person's waist) to the vicinity of the ceiling 15.

  The louver device 2 is a device that decorates the exterior of the building 1 and adjusts the amount and direction of sunlight that enters the room 11 from the window portion 13. The louver device 2 includes a pair of support members 20 (only one side is shown in FIG. 1) installed outside the outer wall 12, a plurality of reflection fins 30 and a plurality of light shielding fins 40 supported between the pair of support members 20. And rotation means 70 are mainly provided.

  The pair of support members 20 are members that support the reflection fins 30 and the light shielding fins 40. The pair of support members 20 are installed on the outside of the outer wall 12 with an interval substantially equal to the length dimension of the reflection fin 30 and the light shielding fin 40. The support member 20 includes a vertical member 21 extending in the vertical direction and a horizontal member 22 extending from the upper and lower ends of the vertical member 21 toward the outer wall 12. Inside the longitudinal member 21, a turning means 70 (see FIGS. 2 and 3) for turning the reflecting fin 30 and the light shielding fin 40 is provided. The rotating means will be described in detail later.

  The reflection fin 30 is a long plate-like member, and has a function of reflecting sunlight irradiated on the reflection fin 30 toward the ceiling 15. The reflection fins 30 are installed in a range corresponding to the upper half of the window portion 13. Furthermore, the reflection fin 30 is installed in the range above the height of the person in the room 11. Incidentally, for example, if the average height of a Japanese adult male is used as a reference, the reflection fin 30 is installed in a range of about 170 cm or more from the floor surface. In the present embodiment, the four reflecting fins 30 are arranged at equal intervals with an interval in the vertical direction. The vertical installation interval V1 between the reflective fins 30 (see FIG. 2) is narrower than the vertical installation interval V2 (see FIG. 3) of the light shielding fin 40 described later.

FIG. 2 is an enlarged cross-sectional view of the reflective fin. In FIG. 2, a state in which the rotation unit 50 of the reflection fin 30 is rotated to the lowermost side and the uppermost side is depicted by a virtual line (two-dot chain line).
As shown in FIG. 2, the rotating unit 50 is a member that adjusts the direction in which sunlight is reflected by rotating in the vertical direction. Rotating shafts 51 protrude from the building 1 side (rear side) at both ends in the longitudinal direction of the rotating portion 50. The rotation shaft 51 is pivotally supported by the support member 20 and is mechanically connected to rotation means 70 provided inside the support member 20. All the rotation parts 50 are rotated by the same angle by the rotation means 70.

  The rotating part 50 is formed in a substantially trapezoidal shape in a side view, and includes an upper surface 52 that extends forward from the upper side of the rotating shaft 51, a front surface 53 that extends downward and rearward from the front end of the upper surface 52, The lower surface 54 extends rearward from the lower end of the front surface 53, and the rear surface 55 extends in an arc shape from the rear end of the lower surface 54 toward the rear end of the upper surface 52. The upper surface 52 is curved in a concave shape. The front surface 53 and the lower surface 54 are formed in a planar shape. The rear surface 55 is formed in an arc shape concentric with the center 51 a of the rotation shaft 51. The front surface 53 is inclined so as to be located on the rear side as it goes downward. Among these, at least the upper surface 52 is subjected to, for example, a highly reflective finish so as to be a reflective surface that reflects sunlight, and the front surface 53 and the lower surface 54 are finished to have a diffuse reflective surface (ordinary finished surface). ing.

  As shown in FIG. 2, the fixing portion 60 is a member for reducing glare by reflecting sunlight that passes between the rotation portions 50 horizontally or obliquely downward, obliquely upward. The fixed portion 60 is disposed adjacent to the rotating portion 50 on the building 1 side. Fixed shafts 61 that are fixed to the support member 20 protrude from the rotation unit 50 side at both ends in the longitudinal direction of the fixing unit 60. The upper surface 62 of the fixed portion 60 is inclined so as to be positioned higher toward the building 1 side. Similarly, the lower surface 63 of the fixed portion 60 is also inclined so as to be positioned higher toward the building 1 side. The thickness dimension of the fixing portion 60 (the distance between the upper surface 62 and the lower surface 63) becomes smaller as the building 1 is approached. The upper surface 62 has a high reflection finish, for example, so as to be a reflection surface that reflects sunlight, and the lower surface 63 has a diffusive reflection surface (ordinary finish surface).

  Returning to FIG. 1, the light shielding fins 40 are members that rotate in the vertical direction to block sunlight incident on the room 11. The light-shielding fins 40 are long plate-like members that have a substantially square shape (boomerang shape) in a side view, and are arranged with the longitudinal direction oriented in the lateral direction. Three light shielding fins 40 are arranged at positions corresponding to the lower half of the window portion 13. Furthermore, the light shielding fin 40 is located at a position corresponding to the window portion 13 and below the height of the person in the room 11. Incidentally, in the present embodiment, three light shielding fins 40 are arranged on the lower side of the window part 13 and on the upper side of the window part 13 for the purpose of improving the design of the building 1 and the power generation capacity. Yes.

FIG. 3 is an enlarged cross-sectional view of the light shielding fin. In addition, in FIG. 3, the state which the light-shielding fin rotated to the lowest side and the uppermost side is drawn with the virtual line (two-dot chain line).
As shown in FIG. 3, the light shielding fins 40 have rotation shafts 41 at both ends in the longitudinal direction and in the middle in the front-rear direction (or the up-down direction) in a side view. The rotation shaft 41 is pivotally supported by the support member 20 and is mechanically connected to rotation means 70 provided inside the support member 20. All the light shielding fins 40 are rotated by the same angle by the rotating means 70.

The light shielding fin 40 is formed in a substantially square shape in a side view, and has a convex surface 42 directed forward (or upward) and a concave surface 43 directed rearward (or downward).
The convex surface 42 has a linear front half 42a on the front side of the rotation shaft 41 and a linear rear half 42b on the rear side of the rotation shaft 41. Similarly, the concave surface 43 has a linear front half 43a on the front side of the rotation shaft 41 and a linear rear half 43b on the rear side of the rotation shaft 41. A solar power generation element 44 is attached to the front half 42 a of the convex surface 42. The concave surface 43 has a matte reflective surface finish that diffusely reflects sunlight.

  The vertical interval V2 between the light shielding fins 40 is lower than the front (lower) end 45 of the upper light shielding fin 40 in a state where the light shielding fin 40 is rotated most downward. The rear (upper) end 46 is set to be positioned on the upper side. In other words, the light shielding fin 40 is configured such that the front (lower) end 45 of the upper light shielding fin 40 and the rear (upper) end 46 of the lower light shielding fin 40 slightly overlap in the horizontal direction. (See dimension V4 in FIG. 3).

  As shown in FIGS. 2 and 3, the turning means 70 is a device that turns the turning portion 50 of the reflection fin 30 and the light shielding fin 40. The rotation means 70 is connected to the first wheel gear 71 connected to the rotation shaft 51 of the rotation unit 50, the first worm gear 72 meshing with the first wheel gear 71, and the rotation shaft 41 of the light shielding fin 40. Second wheel gear 73, second worm gear 74 meshing with second wheel gear 73, shaft 75 connecting first worm gear 72 and second worm gear 74, servo motor 76 for rotating shaft 75, servo And a control unit 77 that controls the motor 76.

The control unit 77 is a device that controls the servo motor 76 so that the front half 42a of the light shielding fin 40 is perpendicular to the sunshine angle calculated from the position coordinate data of the building 1 and date / time data stored in advance. . Thereby, the power generation efficiency of the solar power generation element 44 provided in the front half part 42a of the light shielding fin 40 is improved. The control unit 77 is realized, for example, by causing a general-purpose computer device to execute a predetermined program.
In the present embodiment, the rotating means 70 includes the first wheel gear 71 and the first worm gear 72 so that the light shielding fin 40 rotates by about 2θ when the rotating portion 50 rotates by a predetermined angle θ. A gear ratio and a gear ratio between the second wheel gear 73 and the second worm gear 74 are set.

  Note that the rotation means 70 is not limited to such an automatic control device. For example, the rotation unit 50 of the reflection fin 30 and the light shielding fin 40 are rotated by rotating the shaft 75 with a manual rotation lever. You may make it rotate.

  Next, an example of the rotation range of the rotation unit 50 and the light shielding fin 40 will be described. Here, the end portion 56 between the upper surface 52 and the front surface 53 is formed in an arc shape in a cross-sectional view, and connects the center 56 a of the arc constituting the end portion 56 and the center 51 a of the rotating shaft 51. The straight line is defined as a rotation reference line L1. For the light shielding fins 40, the front half 42a of the convex surface 42 is used as a reference line. In addition, a state of rotating upward with respect to the horizontal reference line LH is expressed as a plus (+) direction, and a state of rotating downward is expressed as a minus (−) direction.

  In the present embodiment, the rotation unit 50 forms a rotation reference line L1 with respect to the horizontal reference line LH in a state where the rotation unit 50 is rotated to the lowest side, as indicated by a virtual line (two-dot chain line) in FIG. The angle θ1 is −9 °, and the upper end rotated to the uppermost side is rotated in the range where the angle θ2 formed by the rotation reference line L1 is + 28 ° with respect to the horizontal reference line LH.

  Further, in the present embodiment, the light shielding fin 40 is rotated to the lowermost side, as indicated by a virtual line (two-dot chain line) in FIG. 3, and the front half 42a of the convex surface 42 with respect to the horizontal reference line LH. Is rotated in the range where the angle θ4 formed by the front half 42a of the convex surface 42 is −12 ° with respect to the horizontal reference line LH.

  Incidentally, the rotating part 50 and the light shielding fin 40 of the reflecting fin 30 are rotated in conjunction with each other by the rotating means 70. When the light shielding fin 40 rotates to the lowermost side (θ3 = −90 °), the rotating portion 50 of the reflective fin 30 also rotates to the lowermost side (θ1 = −9 °). Further, when the light shielding fin 40 is rotated to the uppermost position (θ4 = −12 °), the rotating portion 50 of the reflecting fin 30 is also rotated to the uppermost position (θ2 = + 28 °). The rotation range of the light shielding fin 40 (90 ° −12 ° = 78 °) is approximately twice (78 ° / 78 °) with respect to the rotation range (28 ° + 9) = 37 ° of the rotation unit 50 of the reflection fin 30. 37 ° = 2.1). That is, the rotation unit 50 rotates at an angular velocity (rotation angle) that is approximately ½ of that of the light shielding fin 40.

  Note that the above-described rotation range and rotation ratio are merely examples, and may be set as appropriate according to the region and direction in which the louver device 2 is installed.

  The louver device 2 according to the present embodiment is basically configured as described above. Next, referring to FIGS. 1 to 9 (particularly FIGS. 4 to 9), the operation of the louver device 2 is described. The effect will be described. 4 to 6 are explanatory diagrams for explaining the operation of the reflective fin 30. FIG. 7 to 9 are explanatory diagrams for explaining the operation of the light shielding fin 40.

First, the operation of the light shielding fin 40 will be described.
As shown in FIGS. 7 to 9, the control unit 77 of the louver device 2 uses a light-shielding fin for a sunshine angle (also referred to as solar altitude) δ calculated from the position coordinate data of the building 1 and date / time data stored in advance. The servo motor 76 is rotated so that the front half 42a of the 40 is perpendicular.

  For example, as shown in FIG. 7, when the sunshine angle δ is 60 °, the light shielding fin 40 rotates so that the front half 42a of the convex surface 42 is −30 ° with respect to the horizontal reference line LH. At this time, solar power generation is efficiently performed by the light beam H5 irradiated at right angles to the solar power generation element 44 installed in the front half part 42a of the convex surface 42. Sunlight does not irradiate the latter half 42 b of the convex surface 42, and sunlight does not directly enter the building 1. Therefore, the person inside the room 11 does not feel dazzling, and since the gap between the upper and lower light shielding fins 40 is large, the view is good and a feeling of release can be felt.

  Further, as shown in FIG. 8, when the sunshine angle δ is 30 °, the light shielding fin 40 rotates so that the front half 42a of the convex surface 42 is −60 ° with respect to the horizontal reference line LH. At this time, solar power generation is efficiently performed by the light beam H5 irradiated at right angles to the solar power generation element 44 installed in the front half part 42a of the convex surface 42. Further, the light beam H6 applied to the rear half portion 42b of the convex surface 42 is reflected obliquely upward and applied to the concave surface 43 of the upper light shielding fin 40. Since the concave surface 43 has a matte reflecting surface finish, the light beam H6 applied to the concave surface 43 is diffusely reflected. Therefore, the glare of the person inside the room 11 can be reduced and the brightness near the window portion 13 can be improved. The light beam H7 applied to the rear half 42b of the convex surface 42 is reflected obliquely upward, and is applied to a portion of the ceiling 15 of the room 11 that is close to the window 13.

  Furthermore, as shown in FIG. 9, when the sunshine angle δ is 0 °, the light shielding fin 40 rotates so that the front half 42a of the convex surface 42 is −90 ° with respect to the horizontal reference line LH. At this time, solar power generation is efficiently performed by the light beam H5 irradiated at right angles to the solar power generation element 44 installed in the front half part 42a of the convex surface 42. Further, the light beam H6 applied to the rear half portion 42b of the convex surface 42 is reflected obliquely upward and applied to the concave surface 43 of the upper light shielding fin 40. Since the concave surface 43 has a matte reflecting surface finish, the light beam H6 applied to the concave surface 43 is diffusely reflected. Therefore, the glare of the person inside the room 11 can be reduced and the brightness near the window portion 13 can be improved. Further, in this rotating state, the front end 45 of the upper light shielding fin 40 and the rear end 46 of the lower light shielding fin 40 overlap in the vertical direction (see dimension V4 in FIG. 3). Does not directly irradiate the room 11. Therefore, the person inside the room 11 does not feel dazzling. Further, since the light shielding fins 40 are formed in a substantially square shape in a side view, even in this rotating state, the light shielding fins 40 are horizontally located between the front end 45 of the upper light shielding fin 40 and the rear end 46 of the lower light shielding fin 40. There is a gap in the direction. For this reason, since the field of view in the obliquely downward direction is open, the feeling of occlusion can be reduced.

Next, the operation of the reflective fin 30 will be described.
As shown in FIG. 4, for example, when the sunshine angle δ of the light beams H1 and H2 is 45 °, the angle formed by the rotation reference line L1 of the rotation unit 50 of the reflection fin 30 with respect to the horizontal reference line LH (hereinafter simply referred to as “ May be referred to as “inclination angle θ”.) Is + 16 °. At this time, since the upper surface 52 of the rotating unit 50 is inclined so as to be positioned downward toward the building 1, the light beam H1 applied to the upper surface 52 of the rotating unit 50 is upward at a relatively shallow angle. The ceiling 15 is illuminated. Further, since the upper surface 52 of the rotating unit 50 is curved in a concave shape, the light beam H1 irradiated to a position closer to the front end of the upper surface 52 illuminates the ceiling 15 at the back of the room 11 and The light beam H1 irradiated to a closer position illuminates the ceiling 15 near the window of the room 11. Moreover, since the reflective fins 30 arranged on the upper side are closer to the ceiling 15, the ceiling near the window of the room 11 is illuminated. Thereby, the ceiling 15 is illuminated as a whole and becomes brighter. The light beam H2 applied to the front surface 53 of the rotating unit 50 is reflected downward to illuminate the upper surface 52 of the lower rotating unit 50. When the sunshine angle δ of the light beam is 45 °, the light beam does not directly irradiate the upper surface 62 of the fixed portion 60.

  As shown in FIG. 5, for example, when the sunshine angle δ of the light beams H1 to H4 is 15 °, the inclination angle θ of the reflection fin 30 with respect to the horizontal reference line LH is −2 °. At this time, the upper surface 52 of the rotating part 50 is inclined so as to be positioned upward as it goes toward the building 1 side. Thereby, the behavior of the light beams H1 and H2 is substantially the same as that shown in FIG.

  As shown in FIG. 5, light beams H <b> 3 and H <b> 4 are irradiated on the upper surface 62 of the fixing portion 60. The light beams H3 and H4 are reflected by the upper surface 62 of the fixed portion 60 so as to be directed obliquely upward. For this reason, since the light rays H3 and H4 do not illuminate the inside of the room 11 downward, it is possible to reduce the glare of the person inside the room 11. The light beam H6 reflected on the upper surface 62 of the fixing portion 60 is further reflected on the lower surface 63 of the upper fixing portion 60 to illuminate the interior of the room 11 substantially horizontally. At this time, since the reflection fins 30 are disposed above the average height of the person, it is possible to suppress glare. Further, the light beam H <b> 7 that is reflected on the upper surface 62 of the fixing unit 60 but not on the lower surface 63 illuminates the ceiling 15 near the window of the room 11. Thereby, the ceiling 15 is illuminated as a whole and becomes brighter.

  As shown in FIG. 6, for example, when the sunshine angle δ of the light beams H1 to H4 is 0 °, the inclination angle θ of the reflection fin 30 with respect to the horizontal reference line LH is −9 °. At this time, the upper surface 52 of the rotating part 50 is inclined so as to be positioned upward as it goes toward the building 1 side. As a result, the behavior of the light beams H1, H2, and H4 is substantially the same as that shown in FIG.

  As mentioned above, according to the louver device concerning this embodiment, since rotation part 50 has upper surface 52, by rotating rotation part 50 according to the irradiation direction of light ray H1, The light beam H <b> 1 irradiated on the upper surface 52 of the rotating unit 50 can be irradiated toward the ceiling 15. Moreover, since the rotation part 50 has the front surface 53 extended from the front end of the upper surface 52 and the building 1 side, compared with the case where the front surface 53 is provided at right angles with respect to the upper surface. Thus, the amount of sunlight that hits the upper surface 52 of the lower rotating portion 50 can be increased. Further, the plurality of reflection fins 30 are arranged in parallel with a space therebetween in the vertical direction, and the rotation means 70 rotates the plurality of rotation portions 50 in the vertical direction in the same phase. The light beam H1 reflected on the upper surface 52 of the rotating portion 50 of the reflecting fin 30 illuminates a portion of the ceiling 15 close to the window portion 13 and is reflected on the upper surface 52 of the rotating portion 50 of the lower reflecting fin 30. Illuminates a portion of the ceiling 15 that is relatively distant from the window portion 13. Thereby, the ceiling 15 becomes bright overall, and the usage-amount of illumination can be suppressed.

  Further, the rotation unit 50 has a front surface 53 that extends downward and toward the building 1 from the end 56 opposite to the building 1 on the upper surface 52, and the upper surface 62 of the fixed unit 60 is on the rotation unit 50 side. Since it inclines so that it may be located upward, so that it goes to the building 1 side from the edge part of this, the space | interval (refer dimension V3 of FIG. 2) between the reflective fins 30 arrange | positioned up and down becomes small. Therefore, when sunlight is irradiated at a shallow angle with respect to the horizontal direction (for example, when the sun is low), the amount of sunlight passing between the lower end of the front surface 53 of the rotating unit 50 and the upper end of the fixed unit 60 is small. And dazzling can be reduced. Further, in this case, the sunlight reflected on the front surface 53 of the rotating unit 50 is directed downward, and further reflected on the upper surface 52 of the rotating unit 50 disposed below to illuminate the ceiling 15. Further, the light beams H3 and H4 irradiated on the upper surface 62 of the fixed part 60 are reflected obliquely upward to illuminate the ceiling 15. Thereby, even when the day is low, for example, the ceiling 15 becomes bright overall while suppressing the glare, and the amount of illumination used can be suppressed.

  Moreover, since the upper surface 52 of the rotation part 50 is curving concavely, the light beam H1 irradiated to the upper surface 52 of the rotation part 50 can be efficiently reflected diagonally upward.

  Moreover, since the light-shielding fin 40 is arrange | positioned in the position corresponding to the lower half part of the window part 13, the louver apparatus 2 can reduce the glare of the person in the room 11 of the building 1. FIG. In addition, since the light shielding fins 40 are bent in a substantially letter-like shape when viewed in cross section, the gap between the light shielding fins 40 can be increased as compared with the case where the light shielding fins 40 are not bent. Therefore, visibility can be ensured.

  Moreover, the light shielding fin 40 has the photovoltaic power generation element 44 in the front half part 42a of the convex surface 42, and the rotation means 70 is light shielding fin so that the front half part 42a of the convex surface 42 may be orthogonal to the irradiation angle of sunlight. Since 40 is rotated, the power generation efficiency can be increased.

  As mentioned above, although embodiment of this invention was described in detail with reference to drawings, this invention is not limited to this, In the range which does not deviate from the main point of invention, it can change suitably.

  For example, in the present embodiment, the solar power generation element 44 is installed in the front half 42a of the convex surface 42, but the present invention is not limited to this, and the solar power generation element 44 may be omitted.

  In the present embodiment, a plurality of reflective fins 30 are installed in the upper half of the window 13 and a plurality of light shielding fins 40 are installed in the lower half of the window 13, but the present invention is limited to this. It is not a thing. For example, when the height of the window portion 13 is large, a plurality of light shielding fins 40 may be further disposed above the reflection fins 30.

  Further, in the present embodiment, the rotation means 70 is configured to rotate the rotation portion 50 of the reflection fin 30 at a rotation angle of about ½ of the light shielding fin 40, but the present invention is not limited to this. Instead, the rotation means 70 may rotate the rotation portion 50 of the reflection fin 30 in synchronization with the light shielding fin 40. For example, the rotation unit 50 may be set as appropriate for the rotation angle (ratio) of the rotation unit 50 with respect to the light shielding fin 40 according to the area and orientation in which the louver device 2 is installed.

  In the present embodiment, the rotating means 70 rotates the single shaft 75 with one servomotor 76, so that the rotating portion of the reflecting fin 30 connected to the shaft 75 via gears 71-74. However, the present invention is not limited to this. For example, the shaft 75 and the gears 71-74 are omitted, and a plurality of servo motors 76 are individually connected to the rotating shafts 51 of the plurality of rotating portions 50 and the rotating shafts 41 of the plurality of light shielding fins 40, Each servo motor 76 may be rotated by the control unit 77 in synchronization. If it does in this way, the rotation ratio of the rotation part 50 and the light-shielding fin 40 can be freely set by changing the setting of the control part 77. FIG.

DESCRIPTION OF SYMBOLS 1 Building 13 Window part 15 Ceiling 2 Louver apparatus 20 Support member 30 Reflection fin 40 Light shielding fin 50 Turning part 60 Fixing part 70 Turning means L1 Turning reference line LH Horizontal reference line

Claims (4)

A plurality of reflective fins that are arranged in parallel with the longitudinal direction being laterally spaced apart from each other on the outside of the window of the building, and reflecting the irradiated sunlight toward the ceiling inside the building;
A plurality of light-shielding fins that are arranged below and in parallel with the vertical direction laterally outside the window portion of the building and spaced apart from each other below the reflective fins, and shield the irradiated sunlight.
A louver device having rotating means for rotating the plurality of reflection fins and the plurality of light shielding fins in the vertical direction,
The light-shielding fin is pivotally supported around a rotational axis in a horizontal direction, and is formed in a substantially square shape in a sectional view in which the building side is a concave surface and the opposite side to the building is a convex surface.
The reflection fin is configured to include two members, a rotation unit that can rotate around a horizontal rotation axis, and a fixed unit that is disposed closer to the building than the rotation unit.
The rotating portion includes an upper surface extending in an opposite direction to the building from an end portion on the fixed portion side, and a front surface extending downward and toward the building side from an end portion on the upper surface opposite to the building. Have
The upper surface of the fixed part is inclined so as to be located upward as it goes from the end on the rotating part side toward the building side,
The rotating means rotates the plurality of light shielding fins in the vertical direction in the same phase, and rotates the plurality of rotating portions in the vertical direction in synchronization with the light shielding fins. .   The louver device according to claim 1, wherein the rotating unit rotates the plurality of rotating portions in the vertical direction at a rotation angle that is approximately ½ of the light shielding fin.   The louver device according to claim 1, wherein an upper surface of the rotating portion is curved in a concave shape. The light shielding fin has a photovoltaic power generation element in the first half of the convex surface,
The said rotation means rotates the said light shielding fin so that the front half part of the said convex surface may orthogonally cross with respect to the irradiation angle of sunlight, The Claim 1 characterized by the above-mentioned. Louver device.

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