TWI298094B - Light distribution control method, light distribution control device and greenhouse usins the same - Google Patents

Description

I298Q94 IX. INSTRUCTIONS OF THE INVENTION: TECHNICAL FIELD OF THE INVENTION The present invention relates to a technique for taking in sunlight or controlling light from an artificial light source without a driving means. [Prior Art] In the movable louver system disclosed in Patent Document 1 of the present applicant, the upper surface of the outdoor side portion which divides the transparent blades is divided into a part of a substantially round cross section. The struts are arranged in a structure in which they are sufficiently close to each other and orthogonal to the longitudinal direction of the blade, and the sunlight reflected by the surface is diffused so as to be centered on the axis parallel to the longitudinal direction of the ridge by the arrangement of the ridges. It is substantially symmetrical and is incident on the lower surface of the indoor side portion of the blade located directly above, and is arranged in the same manner as the longitudinal direction of the blade, and is diffused and penetrated so as to be substantially symmetrical about an axis parallel to the longitudinal direction. Widely diffused towards the interior. Further, Patent Document 1 discloses a light distribution control device that introduces light into a shadowed region or a portion by diffusing light that penetrates the surface 1 of a plate-like or film-like structure having the same ridges. , or a specific area or part, to spread the beam of the bulb evenly to reduce the glare. [Patent Document 1] JP-A-2002-8 1275 SUMMARY OF THE INVENTION [Problems to be Solved by the Invention] However, since the arrangement of the ridges required for such a louver or a light distribution control device requires a high degree of manufacturing technology, it is difficult to This satisfactorily realizes the shape and function that can be satisfied. Therefore, the symmetry of the diffused light beam 1298094 with incident light at a large azimuth angle is not sufficient. Further, the use of the diffused light penetrating the surface of the structure also reduces the amount of light due to the surface reflection of the structure, so that there is still room for improvement in energy utilization efficiency. The present invention has been made in order to solve the above problems, and the object of the present invention is to achieve high efficiency by designing and using the structure, without requiring a manufacturing technique that increases the limit of the technical level close to today. A light distribution control method and apparatus using a diffused beam. [Means for Solving the Problem] The light distribution control method of the present invention is a method of: causing light to be incident on a plurality of protrusions of the structure, and passing the light through the incident point and diffusing into a line parallel to the protrusion a conical or semi-conical shape of the central axis, and the structural system has at least a light-transmissive or light-reflective plate or film shape, and has a plurality of parallel and relatively close-arranged on at least one side. The ridges and the cross-sections of the ridges orthogonal to the longitudinal direction of the ridges form a substantially circular portion, and the surfaces of the ridges are substantially mirror-finished. Here, the "substantial mirror" can be defined as follows. It is known that specular reflection is performed on incident light having a predetermined surface unevenness of a structure which is much smaller than the wavelength of light, and on the other hand, scattering (diffusion reflection) is performed when the unevenness is equal to or higher than the wavelength of light. The surface to be specularly reflected is generally referred to as the "mirror surface". In the case where the majority of the surface of the object is composed of a "mirror surface" or a "mirror surface" which is substantially uniformly dispersed, the ratio of the total mirror surface area to the area of the predetermined surface (referred to as the mirror rate) is considered to be on the surface. The use of the appropriate scope is defined as "substantial mirror". For example, the mirror must have a majority of the incident light of 0.9 or more in its required I298Q94 function. The light distribution control device of the present invention arranges a plurality of structural bodies such that diffused light propagating in parallel with the conical shape parallel to the ridges at a predetermined interval is oriented toward at least light transmittance or The light has a portion on one side that is parallel to each other and that is orthogonal to the length direction of the ridge, and in addition to the ridges, each of the structures is formed to be the length of each structure. The direction of the intersection, the shape of each structure and the length direction. It is also preferable to have an adjustment mechanism that changes the size of each structure. The multi-piece structure in which the light distribution control of the present invention is mounted on the window is arranged, and the diffused light is generated or the position where the upper and the external light are incident, and the flower plate portion caused by the protrusions of the respective structures is At least one of the wall portions is to be specularly reflected, and the mirror surface ratio is about: the protrusions are parallel and face each other, and the line of the protrusions of the respective structures is a central axis cone. The direction of the surface or semi-light distribution, and the structural system is plate-like or film-like, and the plurality of protrusions are arranged in a relatively close manner, and the cross section of the intersecting protrusion forms a substantially circular surface substantially Mirror surface.

It is preferred that a plurality of protrusions are formed on the faces. The elongated plate or film shape can form a plurality of ridges in the wrong direction. In this case, the orthogonal cross section has a curved shape or an angle of V to the arrangement direction of the multi-piece structure, and is disposed on the window into which the external light is incident, and the ridges of the respective structures are taken toward the room to become the shadow of the building. Part of the diffused light that is part of the shadow of the building, or placed in or near the greenhouse, can be diffused into the greenhouse interior I298Q94 ^ to absorb the light caused by the ridges of each structure. Further, in the greenhouse of the present invention, the light distribution control device described above is provided in at least one of the ceiling portion and the wall portion of the greenhouse or in the vicinity thereof. Further, at least one of the ceiling portion and the wall portion may be formed by sandwiching the light distribution panel of the light distribution control device between the transparent plates of the double structure. [Effects of the Invention] According to the present invention, it is not necessary to require a manufacturing technique that increases the limit of the technical level close to today, and the symmetry of light diffusion can be improved, and the diffused light beam can be utilized efficiently. [Embodiment] Hereinafter, embodiments of the present invention will be described based on additional drawings. The inventors of the present invention used a fiber-optic rod and a round bar of various diameters to test a light-diffusing structure having a ridge, and then investigated the distribution of the light distribution of the diffusion, and the plurality of ridges were parallel to each other and arranged in close proximity to each of the ridges. The curve of the cross section> The surface of the arc of the line and the surface of the ridge show a substantially specular surface, and the ray A of a point i incident on the surface of the structure, by the diffraction effect caused by the arrangement of the ridges described above, Whether it is reflection or penetration, it spreads into a conical shape with the point i as its apex. It is known that in this diffused beam, the diffuse reflected beam is diffused into a longitudinal half-conical shape, while the diffused transmitted beam is Diffusion into the remaining half of the conical shape. This conical surface diffusion has the following characteristics. First, as shown in Fig. 1, it is assumed that a straight line 1298094 which is parallel to the longitudinal direction of the ridge U through the point i is the Y-axis, and an orthogonal coordinate system of the X-axis and the z-axis orthogonal to the Y-axis is added. In the orthogonal coordinate system, if the thickness of the planar structure is omitted, the 'YZ plane becomes the structure, and the surface is set to the surface S. The coordinate origin 〇 and the Y axis orthogonal to the point i are orthogonal to each other. The XZ plane is the plane T, the axis passing through the point i and parallel to the Z axis is the Z 'axis, and the plane containing the Z 'axis and intersecting the acute angle α and the plane S is the plane P. Advancing on the facet, the light A incident on the face S at the point i, and the intersection of the reflected light and the transmitted light and the face T in the case where the face S is mirrored, respectively, is a and a ' to connect the appropriate points a And the line segments a and 原a' which are the radius of the circle, and each of which is a cross section taken by the diffused reflected light beam of the light A and the surface T of the diffused light beam. Here, as indicated by the incident ray B toward the surface S of the structure, the diffused light beam does not become larger as the acute angle intersecting the XY plane passing through the incident point i and parallel to the ridge U and orthogonal to the plane S is not enlarged. The spread has also grown. Further, in the case where the brightness of the diffused light beam is diffused, the direction of the reflected light and the transmitted light in the case where the plane S is a plane is assumed to be the maximum 値, and the brightness is made to follow the direction away from the maximum 値. The angle between the directions of the largest 値 is lower in a certain relationship. The luminance distribution of the diffused light beam in the diffusion direction (hereinafter referred to as the luminance distribution of the diffused light beam) can be more uniformly distributed by selecting the circumferential angle of the cross section of the ridge, the maximum diameter, and the proximity of the ridges to each other. In these selection examples, for each of the ribs having a radius of 1 mm, 0.5 mm, and 0.125 mm, the circumferential angle of the rib section and the interval between the ridges are changed by the technician H1, the market developer H2, and the business orderer H3. In the third place, each of the following evaluations of the performance of the light distribution control device of the application field of the present invention is allowed to be 1,290,094 degrees. The results of the evaluation are shown in Table 1 below. In addition, the evaluation system is divided into 1: Applicable, 2: According to the use of E to distinguish the application, 3: Difficult to apply the 3-stage evaluation.

[Table 1] The radius of the ridges is estimated by the interval of the circumferential angle ridges HI Η 2 Η 3 1mm 160° About 5 // m 2 2 2 About 1 0 to m 2 3 2 About 1 0 0 // m 3 3 3 140° About 5 # m 3 2 3 About 1 0 // m 2 3 3 About 1 0 0 V m 3 3 3 0.5mm 160° About 5 // m 1 1 2 About 1 0 // m 1 2 2 About 1 0 0 // m 3 3 2 140° about 5 // m 1 2 2 about 1 0 μ m 2 2 2 about 100 // m 3 3 3 0.1 25mm 160° about 5 μ m 1 1 1 about 1 0 // m 1 2 1 约1 0 0 // m 3 3 3 In the first embodiment, the light distribution control device according to the first embodiment is shown. The light distribution control device is provided with an elongated plate shape -10- 1298094 or a film-shaped multi-piece structure 1 each having a plurality of ridges u as described above. In each of the structures 1, the ridges u are staggered in the longitudinal direction of the structure 1. Specifically, 'the direction is formed in the direction orthogonal to each other. These structures 1 are arranged such that the ridges u are parallel to each other and face each other at a predetermined interval d and in parallel. Further, in Fig. 2, although the ridges U' are schematically represented in a pattern by a simple line segment in order to indicate the forming direction, in reality, the ridges U whose cross-section forms a substantially circular portion and whose surface is substantially mirror-finished The surfaces of the structures 1 are arranged side by side very close to each other. Each of the structures 1 has both light transmittance and light reflectivity, and as shown in FIG. 2' • When the light beam L is incident on the surface i of the surface of the structure 1 at an incident angle, the arrangement of the protrusions U is caused by The diffractive effect, whether reflected or penetrated, is diffused into a conical shape with the point i as the apex and the line parallel to the ridge U as the central axis C, and the diffuse reflected beam Fr diffuses into a longitudinal half-conical shape. And the diffusion penetrating beam Ft diffuses into a conical shape of the remaining longitudinal half. Here, the central axis C of the diffused light beam is always in a direction parallel to the ridges U regardless of the incident angle of the ray L, for example, as shown in the third (A) diagram, regardless of the incident angle to the surface of the structural body 1. The incident light ray L1 of 0 1 or the incident light ray L2 having an incident angle of 0 2 is diffused into a conical shape having a central axis C oriented in the same direction. Therefore, the light distribution control device is disposed such that the ridges U of the respective structures 1 are directed in the direction in which light is desired to be distributed. Therefore, the light incident on the surface of each of the structures 1 is diffused into a conical shape having a central axis C in a direction parallel to the ridges U, that is, a direction in which the light is to be distributed, regardless of reflection or penetration. . In this way, the light can be efficiently diffused and distributed in a desired direction.

Further, in the case where the structure 1 has at least light penetrability, the ridges U -11 to 1298094 may be formed as one of the principal faces of the structures 1 facing each other. For example, in the structure 1 of Fig. 2, although the protrusion u is provided on the upper surface, the protrusion U may be formed below. If the ridges U are formed on both sides of the main faces facing each other, the diffusion effect is further enhanced. Further, in the case where the structure 1 does not have light reflectivity and only has light transmittance, in Fig. 2, although the diffusion penetrating beam Ft is diffused only into the conical shape of the lower half of the lower side, the same can be achieved as desired. The direction of the light distribution. On the other hand, in the case where the structure 1 does not have light transmittance and only has light reflectivity®, in Fig. 2, the diffuse reflection light beam Fr is diffused only into a conical surface shape of the upper half of the upper side, and can be oriented in the desired direction. Light distribution. As described above, in the case where the structure 1 has only light reflectivity, the ridges U may be formed only on the surface on which the incident light rays of the main surfaces of the structures 1 are opposed to each other. However, if the ridge U is formed on both sides, as shown by the incident light ray L3 in the third (B) view, the diffused reflected light beam caused by the ridge U on the lower side of the structure 1 on the lower side is located directly above. The protrusion U below the structure 1 is diffused, so that the diffusion light distribution with better efficiency is realized. ^ In the ridge U, for example, various cross sections shown in Figs. 4(A) to (Η) are used, but it is necessary to form a substantially circular portion and the ridge U surface is substantially mirror-finished. Further, it is preferable that the diameter of each of the ridges U is less than 3 mm and 50 // m or more. As shown in the fourth (A), (E), (G), and (H) diagrams, in the case where the arc 1 of the adjacent ridges U is connected to form the structure 1, the actual commercial production technique is limited. The circumferential angle of the arc of the ridge U shown in Fig. 5 is 1 40 degrees or more, and the straight portion is set from the end point of the arc toward the tangential direction to reach and swell from the apex of the -12- 1298094 bulge u The depth of the strip U is approximately equal to the depth, and by this point contact with the adjacent ridge U, commercial production can be performed by extrusion. Second Embodiment Fig. 6 is a view showing a light distribution control device according to a second embodiment. In the light distribution control device of the first embodiment, the adjustment mechanism 2 for changing the angle of the multi-piece structure 1 that is parallel to each other is provided. On the adjustment mechanism 2, a mechanism for changing the inclination of a plurality of blades of a general-purpose louver can be used. # Since the adjustment mechanism 2 is provided, the angle of each structure 1 can be easily changed in accordance with the direction in which light is desired to be distributed. In the light distribution control device according to the first embodiment, each of the structures 1 has a flat plate shape. However, as shown in Fig. 7, a cross section orthogonal to the longitudinal direction may have a bent shape or a V shape. Structure 1. That is, the structure 1 has the outer side portion 3 and the inner portion 4 which are equally divided in the longitudinal direction thereof, and the protrusions U are formed on the surfaces 3a and 4a of the outer portion 3 and the inner portion 4 in a direction orthogonal to the longitudinal direction of the product. . Further, the structure 1 is a person having both light transmittance and light reflectivity. As shown in Fig. 8, the multi-piece structure 1 having the bent cross-sectional shape is arranged in parallel with each other and at a predetermined interval, thereby constituting the light distribution control device according to the third embodiment. For example, the light distribution control device is disposed such that the outer portion 3 is located on the side from which light from the light source such as sunlight or artificial light is incident, and the protrusion U of the inner portion 4 is directed in the direction in which light is desired to be distributed. As shown by the incident light L4, it directly enters the light of the surface 4a of the inner portion 4, and the diffraction effect caused by the arrangement of the ridges U is diffused into a reflection or penetration. The line parallel to the ridge U is a conical shape of the central axis C. Since the structure 1 has a curved cross-sectional shape, when incident on the back surface 3b of the outer portion 3 as indicated by the incident light beam L5, the light reflected by the back surface 3b of the outer portion 3 is incident on the structure 1 directly below. On the surface 4a of the inner portion 4, here, it is diffused into a conical shape having a line parallel to the ridge U as a central axis C. Further, the light penetrating the outer portion 3 among the incident light beams L5 is diffused at the protrusions U of the surface 3a of the outer portion 3, and the light incident on the surface 4a of the inner portion 4 among the diffused lights, It is diffused into a conical shape with the ridge U of the surface 4a as the central axis C. The final direction of diffusion of the light distribution control means is determined in accordance with the direction in which the ridges U of the inner portion 4 face, so that it becomes the direction of light distribution. As described above, by using the structure 1 having a curved cross-sectional shape, light from the light source can be taken in more efficiently, and the light can be directed in the direction in which light is desired to be distributed. Further, the ridges U may be formed on the back sides 3b and 4b of the outer side portion 3 and the inner side portion 4 of the structure 1 instead of the surfaces 3a and 4a thereof. It is also possible to form the ridges U on the surface of one of the outer side portion 3 and the inner side portion 4 and the back side of the other side. Further, it is preferable that both of the surfaces 3a and 4a and the back surfaces 3b and 4b of the outer portion 3 and the inner portion 4 form a ridge U in a direction orthogonal to the longitudinal direction. When so formed, as shown in Fig. 9, for example, as shown by the incident light ray L6, the light incident on the back surface 3b of the outer portion 3 is diffused therein so as to be parallel to the ridge U of the back surface 3b of the outer portion 3. The line is a conical shape of the central axis C 1 , and the diffuse reflection beam is incident on the surface 4a of the inner portion 4 of the structure 1 of the structure 1 directly below, and then diffused to be parallel with the protrusion U of the surface 4a. The line diffused by the back surface 3b of the circular outer portion 3 of the central axis C2 diffuses through the surface 4a of the inner portion 4 of the optical body 1, and the parallel line of the re-diffusing protrusion U is the conical surface of the central axis C2. The structure 1 may also have only one of light penetration. Further, in the light distribution control device according to the third embodiment, the adjustment mechanism 2 shown in the embodiment is preferable in terms of the structure. Fourth Embodiment Further, as shown in Fig. 10, a structure 1 having a curved shape and a length may be used, and a plurality of pieces may be arranged at a predetermined interval. The ridges U are formed in orthogonal directions on the surface of the bend. Because the structure 1 is a conical shape of the cut ® mandrel toward the point at which the incident light is incident. Therefore, the diffusion of the conical shape of the central axis which is not diffused in one direction is generated to perform more uniform light distribution. Further, as shown in Fig. 11, a structure 1 having a rhombic shape or a rectangular shape may be used, and the plurality of sheets may be arranged at intervals of a predetermined interval. The ridges U are formed in the direction orthogonal to the longitudinal direction of the structure. The surface of the inner portion 4 on the two surfaces 5 and 6 in the direction in which the light is intended to be distributed is tapered. Also, in the bundle, the same injection is made to form more than the surface 4a. Or the light-reflective arrangement, the second embodiment is also provided. The cross-sections of the respective structures 1 are orthogonal to each other and are bent in the direction of the direction and the length. Therefore, the line in the direction of the diffusion line is medium, and at a certain angle, A section perpendicular to the direction of the wide range _ the surface of the body 1 is flat on the surface of the body 1 by the arrangement of the ridges U, 1298094 黍, and the light incident on the surface 5 is diffused into a protrusion with the surface 6 The line parallel to the strip U is a conical shape of the central axis C5, and the light incident on the surface 6 is diffused into a conical shape having a line parallel to the ridge U of the surface 5 as the central axis C6. Therefore, a conical surface diffusion is generated in both directions, and a more uniform light distribution can be performed. Further, the structure 1 shown in FIG. 10 and the structure 1 shown in FIG. 1 may each have both light transmittance and light transmittance, or may have only light penetration and light. Any of the penetrating properties. Fifth Embodiment FIG. 1 is a view showing a light distribution control device according to a fifth embodiment. In the light distribution control device, the surfaces of the structures 1 shown in the first embodiment are arranged in parallel with each other at a predetermined interval above the region Q where the light distribution is desired, and the respective faces are oriented vertically. Direction. Further, the ridges U of the respective structures 1 are oriented in the vertical direction. When sunlight or the like is incident from the obliquely upward direction on the surface of each of the structures 1 arranged as described above, it is diffused into a conical shape having a central axis C which is parallel to the ridges U and directed in the vertical direction, and thus is located in the region Q below. Perform a uniform light distribution. As shown in Fig. 3, in the light distribution control device according to the fifth embodiment, when the adjustment mechanism 2 shown in the second embodiment is provided and the angle of each structure 1 can be changed in structure, it is possible to The area Q where light distribution is required is more surely introduced into the light. Further, as shown in Fig. 14, the arrangement of the plurality of structures 1 can be formed by overlapping the upper and lower portions. In this case, the arrangement direction of the structure 1 located in the upper stage and the arrangement direction of the structure 1 located in the lower stage are mutually staggered, for example, orthogonal. In this way, the light from the light source -16 - 12.98094 ^ can be taken in more efficiently and distributed to the area Q. Further, each of the structures 1 shown in Fig. 12 and Fig. 14 does not have to be oriented in the vertical direction, and may be arranged to form a certain angle in the horizontal direction so as to be incident on the light from the light source. Further, the structure 1 is not limited to those shown in the first embodiment, and a structure having a cross-sectional shape as shown in the third and fourth embodiments may be used. [Embodiment] > Embodiment 1 Fig. 15 shows Embodiment 1 of a light distribution control device embodying the present invention. The light distribution control device according to the first embodiment is installed in a window 7 into which external light is incident. The multi-piece structure 1 of the light distribution control device is arranged along the surface of the window 7, and the diffused light caused by the ridges U of the respective structures 1 is taken into the room. [Embodiment 2] As shown in Fig. 6, the light distribution control device according to the first embodiment is installed in the sunroof 8 into which external light is incident. The multi-piece structure 1 of the light distribution control device is arranged along the surface of the > skylight 8, and the diffused light caused by the ridges U of the respective structures 1 is taken in from the upper side toward the room. (Embodiment 3) As shown in Fig. 17, the light distribution control device according to the first embodiment is placed above the shaded portion 10 of the building 9 and the external light is incident. The multi-piece structure 1 of the light distribution control device is arranged vertically in the vertical direction and in the horizontal direction above the portion 10. The diffused light caused by the ridges U of the respective structures 1 is taken in from the upper side toward the portion 1. -17- 1298094 ^ Embodiment 4 As shown in Fig. 18, the light distribution control device according to the first embodiment is placed above or to the side of the cultivated crop 1 1 planted on the ground. The diffused light caused by the ridges U of the respective structures 1 is taken up from the top toward the planting crop 11. Therefore, sunlight or artificial light can be more effectively irradiated to the cultivated crops 1 to promote cultivation. [Embodiment 5] As shown in Fig. 9, the light distribution control device according to the first embodiment is installed above the greenhouse 12 or above the roof. The multi-piece structures 1 of the light distribution control device are each arranged in the vertical direction and along the roof of the greenhouse 12. The diffused light caused by the ridges U of the respective structures 1 is taken in from the upper side toward the inside of the greenhouse 12. Further, as shown in Fig. 20, the light distribution control device according to the first embodiment is provided in the upper portion of the greenhouse 12, and the same effect can be obtained. The light distribution control device is not limited to the upper portion of the greenhouse 12 or the upper portion of the greenhouse 12, and may be provided at least in the vicinity of the ceiling portion and the wall portion of the greenhouse 12. [Embodiment 6] As shown in Fig. 2, two transparent plates 13 and 14 each made of resin, glass, or the like are arranged in parallel with each other at intervals, and are formed between these transparent plates 13 and 14 As shown in Fig. 22, the light distribution panel 15 having the light distribution control device according to the first embodiment of the multi-piece structure 1 is formed by the light distribution panel 15 to form a ceiling portion and a wall portion of the greenhouse. The protrusions u of the respective structures 1 of the light distribution panel 15 are taken up from the upper side and the side toward the inside of the greenhouse to cause -18 - 1298094 ^ of diffused light. Further, since the light distribution control device is sandwiched between the transparent plates 1 3 and 1 / 2 of the double structure, the heat insulating effect can be utilized to protect the multi-piece structure 1 from heat intrusion. It is also possible to form both the ceiling portion and the wall portion of the greenhouse without using the light distribution panel 15 , and it is also effective to form only at least one of the ceiling portion and the wall portion by the light distribution panel 15 . In addition to the above-described first to sixth embodiments, for example, the light distribution control device of the present invention is provided above or in front of the light-receiving portion of the solar cell, and it is also effective to efficiently perform light distribution on the photosensitive portion. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a view for explaining a light distribution control method of the present invention. Fig. 2 is a partial perspective view showing a light distribution control device according to a first embodiment of the present invention. 3(A) and 3(B) are cross-sectional views showing the operation of the light distribution control device according to the first embodiment. ® 4(A) to (Η) are sectional views showing various forms of the structure used in the light distribution control device. Fig. 5 is an enlarged cross-sectional view showing a ridge of the structure. Fig. 6 is a side view showing the light distribution control device of the second embodiment. Fig. 7 is a cross-sectional view showing various features of the structure used in the light distribution control device of the third embodiment. Fig. 8 is a side view showing a light distribution control device according to a third embodiment. Fig. 9 is a side view showing a light distribution control device according to a third embodiment. -19- 1298094 Fig. 10 is a cross-sectional view showing the m structure used in the light distribution control device of the fourth embodiment. Fig. 1 is a cross-sectional view showing a structure used in a modification of the light distribution control device according to the fourth embodiment. Fig. 1 is a perspective view showing a light distribution control device according to a fifth embodiment. Fig. 13 is a side view showing a modification of the light distribution control device of the fifth embodiment. Fig. 14 is a perspective view showing another modification of the light distribution control device of the fifth embodiment. Fig. 15 is a perspective view showing the light distribution control device of the first embodiment. Fig. 16 is a cross-sectional view showing the light distribution control device of the second embodiment. Fig. 17 is a cross-sectional view showing the light distribution control device of the third embodiment. Fig. 18 is a cross-sectional view showing the light distribution control device of the fourth embodiment. Fig. 19 is a cross-sectional view showing the light distribution control device of the fifth embodiment. Fig. 20 is a cross-sectional view showing the light distribution control device according to a modification of the fifth embodiment. Fig. 2 is a partial perspective view showing a light distribution panel used in the greenhouse of the sixth embodiment. Figure 22 is a cross-sectional view showing the greenhouse of the sixth embodiment. [Description of component symbols] 1 Structure 2 Adjustment mechanism 3 Outside part -20- 1298094

4 7 8 9 10 11 12 13, 14 15

U C , Cl , C2 , C5 , Inner part Surface window Skylight Building Part Cultivated crops Greenhouse Transparent plate Light distribution panel Bars C6 Center axis

-twenty one -

Claims (1)

Xing 094 No. 95105848 'Greenhouse' patent case light distribution control method, light distribution control device and the use of the device (corrected on November 2, 2007) X. Patent application scope: 1. A light distribution control method, characterized by : injecting light into a plurality of ridges of the structure, and diffusing the light into a conical or semi-conical shape through a point of incidence and a line parallel to the ridge, and the structure has at least light penetration a plate or film having permeability or light reflectivity, and having a plurality of ridges arranged parallel to each other and relatively close to each other on at least one face, and a cross section of the ridge orthogonal to the longitudinal direction of the ridge is formed substantially It is a part of a circle, and the surfaces of the protrusions are substantially mirror-shaped. 2. A light distribution control device, characterized in that: a plurality of structural bodies are arranged such that protrusions of each other are parallel, and faces of each other are parallel to each other at a predetermined interval, so that projections of the respective structures are incident. The light propagates into a conical or semi-conical diffused light having a central axis parallel to the ridge toward a direction in which light is desired to be distributed, and the multi-piece construction system each has at least light penetration or a light-reflective plate or film shape having a plurality of ridges arranged parallel to each other and relatively close to each other on at least one face, and a cross section of the ridge orthogonal to the longitudinal direction of the ridge is formed into a substantially circular shape Part of the surface of the ridges is substantially mirrored. 3. The light distribution control device of claim 2, wherein a plurality of ridges are formed on each of both sides of each of the structures. The light distribution control device according to claim 2, wherein each of the structures has an elongated plate shape or a film shape, and a plurality of ridges are formed in a direction interlaced with the longitudinal direction of each of the structures. 5. The light distribution control device according to claim 3, wherein each of the structures has an elongated plate shape or a film shape, and a plurality of ridges are formed in a direction staggered with the longitudinal direction of each of the structures. 6. The light distribution control device of claim 4, wherein the cross section orthogonal to the longitudinal direction of each of the structures has a bent shape or a V shape. B. The light distribution control device according to claim 5, wherein the cross section orthogonal to the longitudinal direction of each of the structures has a bent shape or a V shape. 8. The light distribution control device according to any one of claims 2 to 7, further comprising an adjustment mechanism for changing an angle of each of the structures for the arrangement direction of the plurality of structures. 9. The light distribution control device according to claim 8, wherein the plurality of structures are arranged along the surface of the window, and the ridges of the respective structures are taken toward the indoor _ Diffused light. 10. The light distribution control device according to the eighth aspect of the invention, wherein the light distribution control device is installed above the portion of the shadow of the building and the position where the external light is incident, and is taken into the structure of the building toward the shadow of the building. The diffused light caused by the ridges. The light distribution control device according to claim 8, wherein at least one of the ceiling portion and the wall portion of the greenhouse is disposed in the vicinity of the greenhouse, and the diffusion caused by the protrusion of each structure is taken into the greenhouse. Light. 12. A greenhouse, characterized in that the light distribution control device according to any one of claims 2 to 28,094 of the invention is provided in at least one of a ceiling portion and a wall portion or in the vicinity thereof. 13. The greenhouse of claim 12, wherein at least one of the ceiling portion and the wall portion is formed by a light distribution panel having a light distribution control device sandwiched between the transparent plates of the double structure.