JP6444679B2 - Vertical light duct - Google Patents

Description

  The present invention relates to a saddle type light duct that takes daylight into a building.

2. Description of the Related Art Conventionally, a plurality of techniques for guiding sunlight into a building and using it as an illumination light source have been used. As one of the techniques, there is a technique called an optical duct. The light duct includes a daylighting unit provided at a position penetrating the building skin, a light emission unit provided in a portion using the guided sunlight, and a light guide unit for guiding sunlight from the daylighting unit to the light emission unit, , Divided into
There are two types of optical ducts, a vertical duct (the daylighting unit is installed on the rooftop) and a horizontal type optical duct (the daylighting unit is installed on the outer wall). The reason why the horizontal light duct is not adopted is as follows: (1) It is difficult to cope with fluctuations in the position of the sun, (2) The required duct back is too large to fit within the general floor height, and (3) The lighting section is located on the outer wall. It is necessary to harmonize with the exterior wall design when trying to install it in the area.

A countermeasure against (1) has been proposed, and for example, a method of automatically adjusting the inclination angle of the reflecting surface for taking sunlight into a building has been proposed (for example, see Patent Document 1).
In addition, the daylighting part of the horizontal light duct generally has a shape like a “receiver”. The shape like this “receiver” is a device for taking more daylight into the daylighting unit. The daylighting part having a shape like this “receiving port” is provided such that the bottom part of the daylighting part protrudes to the outdoor side from the window glass and the waist wall. In addition, there is a method of arranging the daylighting unit so as to fit inside the outer wall line, but in any case, the height of the daylighting unit is relatively large.

  As described above, the daylighting portion is difficult to harmonize with the exterior design of the building because the height of the opening surface is large. For this reason, various ideas have been made to harmonize with the outer wall design. For example, there is a method of designing to make the daylighting part look like a part of the window, a method of devising an installation place to make the installation part of the daylighting part appear not to be an outer wall, a method of embedding the daylighting part in the outer wall, etc. Proposed.

  As a method for making the daylighting part look like a part of the window, for example, by providing the same number of daylighting parts as the window on the upper part of the window, the daylighting part looks like a part of the window. For this reason, a feeling of strangeness does not occur in the daylighting section in the entire outer wall. However, since the same number of lighting parts as the number of windows is required, it is difficult to implement in terms of cost unless the price of the horizontal light duct (including construction costs and construction costs caused by installation) is low. The price of a horizontal light duct is not cheap.

Moreover, as a method of devising the installation location of the daylighting unit, it is as if the daylighting unit is arranged on the roof surface by installing the daylighting unit on the top of the outer wall. Then, it can be made to feel that the lighting part and the outer wall design are unrelated. If daylighting is performed by providing a daylighting unit on the top floor in this way, the vertical light duct is cheaper and more responsive to changes in the azimuth of the sun.
Moreover, in the case of the method of embedding a daylighting part in an outer wall, a daylighting part may be conspicuous on the contrary by the reflected light by the light reflection material in a daylighting part. In addition, the method of embedding the daylighting part in the outer wall reduces the efficiency of guiding light compared to the case of not embedding. Therefore, a lighter that does not exist on other floors is installed, and the light reflected by this lighter is introduced into the daylighting part. For this reason, it is necessary to supplement the amount of light that irradiates the daylighting unit.

Japanese Utility Model Publication 4-55365

As described above, methods for harmonizing the daylighting unit with the exterior design of the building have been proposed, but these methods are disadvantageous in terms of cost and efficiency. Therefore, there has been a demand for an optical duct having a daylighting portion that can be more harmonized with the exterior design of a building without increasing costs or reducing efficiency.
Therefore, the present invention has been made paying attention to the above-mentioned conventional unsolved problems, and can efficiently guide light without increasing the cost and can be more harmonized with the exterior design of the building. The aim is to provide a saddle-shaped light duct.

In order to achieve the above object, the vertical light duct according to claim 1 of the present invention has a daylighting unit for collecting sunlight and a light guide unit for guiding the sunlight collected by the daylighting unit, Having a bowl-shaped ridge disposed on the outside of the building, a light guide that guides sunlight, and a light emission part that emits sunlight guided by the light guide to the indoor space, An indoor portion disposed inside the building, wherein the indoor portion includes an end portion on the building side of the light guide portion in the heel portion and an end portion on the outdoor side of the light guide portion in the indoor portion. It is arranged so that sunlight that is opposed and guided to the end on the building side by the light guide in the roof enters the light guide in the indoor part, and further, the daylighting unit and the wall the light guide portion of the portion formed in a tubular shape, wherein the eaves section is disposed outside of the building have between the buildings a predetermined distance as a wind vent features a Rukoto There.
In addition, the saddle shape here includes a so-called saddle itself, and also includes a shape that protrudes outward from the outer wall of the building like a saddle.

Also, eaves optical duct according to claim 2, closes the gap between the building and the eaves portion from the side of the overhanging portion, is characterized in that it comprises a light leakage prevention member formed of a specular reflective material Yes.
Moreover , the vertical optical duct according to claim 3 includes a rainwater guide plate projecting to the building side at an end of the building upper surface of the saddle portion, and the end of the rainwater guide plate on the building side is , It is characterized in that it is located between the end of the heel part on the building side and the building.
Furthermore, the vertical light duct according to claim 4 includes a daylighting unit for daylighting and a light guide unit for guiding the sunlight collected by the daylighting unit, and is disposed in the outer shape of the building. And a light guide part that guides sunlight and a light emitting part that emits sunlight guided by the light guide part into the indoor space, and is disposed inside the building. And the indoor part has an end of the light guide part in the ridge part on the building side facing an end part on the outdoor side of the light guide part in the indoor part, and the light guide in the ridge part. The sunlight guided to the end portion on the building side by the portion is arranged to enter the light guide portion of the indoor portion, and further, the A rainwater guide plate projecting to the side, wherein the end of the rainwater guide plate on the building side is located between the end of the saddle on the building side and the building. That.

  According to the present invention, the daylighting part and a part of the light guide part are included in the eaves, and the horizontal light duct appears to be a glance at the exterior of the building. The lighting part of the duct can be harmonized with the exterior design of the building.

It is explanatory drawing which shows the concept of this invention. It is sectional drawing which shows schematic structure of an example of the horizontal type | mold optical duct applied to the vertical type optical duct in this invention. It is a fragmentary sectional view for demonstrating the schematic structure of the width direction of a lighting part. It is sectional drawing which shows an example of the front-end | tip part of a collar part. It is sectional drawing which shows an example of a structure of an air vent part. It is sectional drawing which shows the other example of a structure of an air vent part. It is a top view which shows an example of a structure of an air vent part. It is explanatory drawing for demonstrating the effect | action of a light leakage prevention board. It is explanatory drawing for demonstrating the arrangement position of a light leakage prevention board. It is sectional drawing which shows an example of the fixing | fixed part of a light leak prevention board. It is sectional drawing which shows an example of the reflection part of a light leakage prevention board. It is sectional drawing of the ventilation part for demonstrating the arrangement position of a rainwater guide plate. It is an example of a multistage bowl. It is the other example of arrangement | positioning of a saddle type optical duct.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a conceptual diagram showing an example of a vertical optical duct 1 according to the present invention.
As shown in FIG. 1, the vertical light duct 1 is a horizontal light duct, and is horizontally disposed in the vicinity of the upper part of the window frame provided in the building 2 through the building skin. The eaves-type optical duct 1 includes an eaves part 1A, an indoor part 1B, and an air vent 1C. The eaves part 1A is disposed outside the building and acts as a eaves. Indoor part 1B is arranged inside a building. The air vent 1 </ b> C is formed between the flange 1 </ b> A and the outer skin of the building 2.

FIG. 2 is a cross-sectional view showing a schematic configuration of an example of a horizontal light duct applied to the vertical light duct 1 in the present invention. The configuration of the air vent 1C portion will be described later.
As shown in FIG. 2, the vertical light duct 1 includes a daylighting unit 3 that collects sunlight irradiated from the sun, a light guide unit 5 that guides sunlight emitted from the daylighting unit 3, and a light guide. And a light emitting unit 7 that emits sunlight guided by the unit 5 as illumination light of the indoor space 92. And the lighting part 3 and a part of light guide part 5 are provided in the collar part 1A. The portion of the vertical light duct 1 that is disposed indoors, that is, the indoor portion 1B is horizontally disposed on the ceiling plate 93, and the light guide portion 5 is horizontally disposed.

  The light guide 5 is formed in a substantially rectangular tube shape with a large horizontal width, and the entire inner surface of the light guide 5 is finished with a specular reflector. The daylighting unit 3 is provided in an opening at one end of the light guide unit 5, and the light emission port 7 a is formed on the light guide unit lower surface 5 b in the middle of the light guide unit 5. The light emission part 7 includes a mirror reflection part 8 that changes the traveling direction of the guided light to the light emission port 7a side. The light emission port can also be provided on the side surface of the end portion of the light guide portion 5.

The daylighting unit 3 is inclined upward with respect to the light guide unit 5 to form an opening, and the opening is formed at an angle at which more sunlight can be received corresponding to the solar altitude during the day. The A traveling direction changing unit that changes the traveling direction of sunlight is formed in the daylighting unit 3.
That is, as shown in FIG. 2, the downstream side (hereinafter simply referred to as the downstream side) of the daylighting unit upper surface 3 a of the daylighting unit 3 in the sunlight guiding direction is the sunlight guiding unit 21. It is joined to the upstream side in the light direction (hereinafter simply referred to as the upstream side), and the lighting unit upper surface 3a is joined with the upstream side inclined upward with respect to the light guide unit upper surface 5a.

The lower surface side of the daylighting unit 3 includes a first lower inclined surface 3b having a gentler slope than the daylighting unit upper surface 3a, a substantially horizontal horizontal surface 3c joined to the downstream side of the first lower inclined surface 3b, and a horizontal surface. A second lower inclined surface 3d connected to the downstream side of 3c and having a gentler inclination than the first lower inclined surface 3b, and the downstream side of the second lower inclined surface 3d is connected to the lower surface 5b of the light guide section. Be joined.
Then, a prismatic first refracting body 4a extending in the width direction of the daylighting unit 3 is disposed on the daylighting unit upper surface 3a portion of the daylighting unit 3, and the first refracting body 4a, the first lower inclined surface 3b, In the meantime, the prismatic second refractor 4b extending in the width direction of the daylighting unit 3 is disposed with a gap. The first refracting body 4a and the second refracting body 4b are made of, for example, a transparent prism that is formed of glass, crystal, resin, or the like and can emit incident light by reflecting or refracting it.

The first refracting body 4a is provided perpendicular to the first surface m1 facing the opening of the daylighting unit 3, the second surface m2 having a gentler slope than the daylighting unit upper surface 3a, and the light guide unit upper surface 5a. And a third surface m3.
The second refracting body 4b faces the opening of the daylighting unit 3, faces the first surface m11 having a gentler inclination than the first surface m1, and the first lower inclined surface 3b. The second surface m12 having a gentler inclination than the lower inclined surface 3b and the traveling direction of the sunlight incident on the second refracting body 4b are set horizontally along the direction in which the light guide 5 extends. A fourth surface m14 that is emitted so as to be changed, and a third surface m13 that is formed between the second surface m12 and the fourth surface m14 and is formed of a substantially horizontal plane.

A specular reflection material is formed on each of the lighting unit upper surface 3a, the first lower inclined surface 3b, the horizontal surface 3c, and the third lower inclined surface 3d to form a specular reflecting surface.
In the daylighting unit 3 configured in this way, the traveling direction of the incident sunlight is determined by passing through one or more of the first refracting body 4a, the second refracting body 4b, and each specular reflection surface. Change to be horizontal when viewed from the side. That is, the specular reflection formed on each of the first refracting body 4a, the second refracting body 4b, the lighting unit upper surface 3a, the first lower inclined surface 3b, the horizontal surface 3c, and the third lower inclined surface 3d. The surface constitutes the traveling direction changing unit.

There are three ways to change the direction of sunlight so that it is horizontal when viewed from the side. In the following description, changing the traveling direction of sunlight so as to be horizontal when viewed from the side is also referred to as leveling, and this method is also referred to as leveling method.
The first leveling method is based on refraction in the refractor and total reflection from the high refractor to the low refractor (air) by the first refractor 4a or the second refractor 4b. The conversion method is based on specular reflection by the specular reflection surface, and the third leveling method is based on refraction in the refraction body by the first refracting body 4a or the second refracting body 4b and specular reflection by the specular reflection surface. There is something.

The sunlight from each solar altitude is leveled by these three leveling methods so as to proceed in a direction within ± 10 degrees from the horizontal when viewed from the side.
In addition, the shape and material (refractive index) of the 1st refractor 4a and the 2nd refractor 4b, arrangement position, and the shape of the lighting part 3 are the area where the vertical optical duct 1 is installed, specifically, It is set according to the latitude, mildness, and surrounding conditions.

FIG. 3 is a partial cross-sectional view for explaining a schematic configuration in the width direction of the daylighting section 3 of the vertical light duct 1 in the present invention, showing the upper half of the vertical light duct 1 in the width direction. Yes, the shape of the lower half is the shape of the upper half and the surface object.
As shown in FIG. 3, the opposite side surfaces of the daylighting section 3 of the saddle-shaped light duct 1 are not arranged in parallel to each other, but a plurality of specular reflecting surfaces (in the case of FIG. Are arranged at a predetermined angle, and the distance between the side surfaces gradually increases as the distance from the opening of the daylighting unit 3 increases. It is arranged to be larger.

  Specifically, one or a plurality of specular reflection surfaces arranged on the side surface of the daylighting unit 3 is such that the traveling direction of sunlight reflected from these specular reflection surfaces as viewed from above extends along the direction in which the light guide unit 5 extends. The angles formed by the plurality of specular reflection surfaces are adjusted so as to be parallel to each other. The angles of the plurality of specular reflection surfaces are determined according to the solar azimuth angle of incident sunlight. That is, it is determined based on the area or longitude where the vertical light duct 1 is installed.

FIG. 4 is a diagram illustrating an example of a tip portion of the collar portion 1A.
As described above, the saddle-shaped light duct 1 has a high specular reflectivity in the interior finish in order to guide more captured light. And the opening part of the lighting part 3 is sealed so that external air may not enter into the inside of the collar part 1A in order to prevent a decrease in the specular reflectance due to dirt.
Specifically, a sealing member 31 made of a light transmitting material is provided at the opening at the tip of the daylighting unit 3 so as to capture more daylight. The sealing member 31 is preferably subjected to antifouling treatment in order to prevent a decrease in light transmittance. Specifically, a highly transparent protective film (photocatalyst, water-repellent film having a lotus surface structure) can be considered as the antifouling treatment.

5-7 is a figure which shows the structure of the wind vent 1C part of the vertical optical duct 1, Comprising: FIG. 5, FIG. 6 is sectional drawing, FIG. 7 is a top view. 5 to 7, the thickness of each part is omitted for simplicity.
As shown in FIG. 5, the saddle-shaped light duct 1 has the daylighting section 3 side provided in the collar section 1A, the light emission section 7 side provided in the indoor section 1B, and guided through the collar section 1A and the indoor section 1B. The light part 5 is provided. The heel part 1 </ b> A is fixed to the building 2 with a space that becomes the air vent 1 </ b> C between the building 2 and the building 2. In addition, the buttocks 1A are arranged such that the surface on the building 2 side of the buttocks 1A, the surface on the outside of the building 2, and the surface on the buttocks 1A side of the indoor portion 1B are parallel to each other. The light guide unit 5 includes a light guide unit provided in the heel part 1A and a light guide part provided in the indoor part 1B, and the outer surface of the building 2 of the heel part 1A and the ridge part 1A of the indoor part 1B. The indoor part of the light guide provided in the collar part 1A is arranged so that the surface on the side is parallel and the extending direction of the flange part 1A and the extending direction of the indoor part 1B are on the same straight line. The surface of the light guide provided in 1B and the surface of the light guide provided in the indoor portion 1B on the flange 1A side are parallel, and the direction in which the light guide provided in the flange 1A extends And the direction where the light guide part provided in indoor part 1B extends is located on the same straight line. As a result, the light guided by the light guide unit on the side of the flange 1A is transmitted to the light guide unit provided in the indoor unit 1B via the wind vent 1C and transmitted to the light emitting unit 7 side. It has become.

For example, as shown in FIG. 5, by fixing the upper surface of the flange 1A and the outer surface of the building 2 with a bracket 1D, the flange 1A is suspended and fixed to the building 2 at a predetermined interval. Is done. In addition, as shown in FIG. 6, the lower surface of the flange 1 </ b> A of the vertical optical duct 1 and the outer surface of the building 2 are fixed by the bracket 1 </ b> D, thereby supporting the flange 1 </ b> A from the lower side. Thus, the building 2 may be fixed at a predetermined interval.
For example, as shown in FIG. 7, the bracket 1 </ b> D may be fixed at positions near both ends in the width direction of the flange 1 </ b> A.

  Here, the end face on the indoor part 1B side of the collar part 1A is sealed by a sealing member 32 formed of a highly transparent protective film or the like. Similarly, the end surface of the indoor portion 1B on the side of the flange 1A is sealed by a sealing member 33 formed of a highly transparent protective film or the like. As a result, outside air enters the vertical optical duct 1 to prevent a decrease in specular reflectance due to dirt inside the vertical optical duct 1. The sealing member 32 is preferably subjected to antifouling treatment in order to prevent a decrease in light transmittance. Specifically, a highly transparent protective film can be considered as the antifouling treatment. As the protective film, a photocatalyst, a water repellent film having a lotus surface structure, or the like can be applied.

And the indoor part 1B is horizontally mounted on the ceiling board 93, and the end face of the indoor part 1B on the side of the flange 1A is in the vicinity of the upper part of the window glass and formed on the building skin near the indoor ceiling board The flange portion 1A is fixed so that the flange portion 1A is positioned on the extension in the longitudinal direction of the indoor portion 1B. Thereby, the vertical optical duct 1 is fixed through the building skin.
In the vertical light duct 1 arranged in this manner, sunlight is taken into the daylighting unit 3 through the sealing member 31 provided in the opening, guided by the light guide unit 5, and the collar unit 1A. The light is guided to the indoor portion 1B side through a sealing member 32 made of a light transmitting material provided on the building 2 side and a sealing member 33 made of a light transmitting material provided on the indoor portion 1B side.

Moreover, since the inside of the collar part 1A is hollow, unlike the conventional collar, its own weight is light and it is easy to receive to the influence of a wind. However, since the wind vent 1C is provided between the end of the heel part 1A on the building 2 side and the building 2, the influence of the wind can be reduced.
Here, the locus | trajectory of the light from the sun which faces the opening part of the lighting part 3 in a horizontal direction is shown in FIG. Most of the sunlight directly facing the opening is leveled and guided to the light emitting unit 7 while being reflected in the vertical direction in the light guide unit 5.

On the other hand, as shown in FIG. 8, sunlight that does not face the opening end is also reflected in the horizontal direction, and is formed by a wind draft 1 </ b> C between the heel part 1 </ b> A and the building 2. There is a possibility that light leaks in the gap portion. This leads to a decrease in the amount of light guided.
Therefore, as shown in FIG. 9, a light leakage prevention plate (east) 34E and a light leakage prevention plate (west) 34W are provided at both ends in the width direction of the air vent 1C.
The light leakage prevention plates (east) 34E and (west) 34W are provided with a reflection portion 34a for preventing light leakage from the wind vent 1C portion in the horizontal direction and light leakage prevention plates 34E and 34W to the flange portion 1A. A fixing portion 34b for fixing, and the fixing portion 34b and the reflecting portion 34a are connected to each other.

As shown in FIG. 10, the fixing portion 34 b has a cross-section in the longitudinal direction of the saddle-shaped optical duct 1, and has a “K” shape or a reverse shape.
As shown in FIG. 11, the reflecting portion 34 a has a longitudinal cross-section of the saddle-shaped optical duct 1 that has a shape in which the Roman letter “L” is turned upside down or a shape that is left and right reversed. The reflective portion 34a is arranged along the side surface in the width direction of the collar portion 1A so that the portion corresponding to the short side of the Roman letter L faces upward and the inner side faces the inner side, and the portion corresponding to the long side of the Roman letter L It arrange | positions so that the clearance gap between the part 1A and the building 2 may be plugged up from the side.

  Thereby, in the reflection part 34a, the sunlight which progresses in a horizontal direction is reflected by the part corresponding to the long side of the Roman letter L, and light leakage is prevented. Further, by providing a portion corresponding to the short side of L in the Roman letter, rainwater or the like is prevented from falling on the portion corresponding to the long side of the reflecting portion 34a, that is, the mirror surface that reflects the sunlight in the horizontal direction. Is prevented from getting dirty.

  By fixing the fixing part 34b of the light leakage prevention plates 34E and 34W to the side surface in the width direction on the building 2 side of the ridge part 1A, as shown in FIGS. As a result, the sunlight leaked from the air vent 1C is reflected by the reflecting portion 34a and returned to the light guide portion 5. In addition, the reflective part 34a consists of a specular reflector at least on the side facing the air vent 1C.

Further, the upper surface of the flange 1A is inclined so that the building 2 side is lower than the opening side. By providing such an inclination, rainwater is prevented from accumulating on the upper surface of the collar 1A. The inclination of the upper surface of the collar 1A is, for example, about “1/30”.
Moreover, as shown in FIGS. 7 and 12, a rainwater guide plate 35 is provided on the upper surface of the end portion of the eaves part 1 </ b> A.

  The rainwater guide plate 35 prevents rainwater from flowing down toward the wind vent 1C due to the inclination of the upper surface of the collar 1A, and as a result, the sealing member 32 made of the light transmitting material of the collar 1A is prevented from being contaminated and the light transmittance being lowered. doing. The rainwater guide plate 35 is formed, for example, in a plate shape, and has a width approximately equal to the width of the collar portion 1A, and the end portion of the rainwater guide plate 35 in the longitudinal direction of the collar portion 1A is the end portion of the collar portion 1A. Further, the rainwater that protrudes to the building 2 side and is formed with a gap between the building 2 and flowing to the building 2 side on the upper surface of the heel part 1A is prevented from falling on the sealing member 32 of the heel part 1A.

  When the installation height of the vertical light duct 1 is high, the distance between the vertical part 1A and the building 2, that is, the length in the longitudinal direction of the vertical optical duct 1 of the wind vent 1C, that is, the vertical part. By increasing the distance between 1A and the building 2, the dripping of rainwater received by the flange 1A of the vertical light duct 1 provided in the upper layer of the building 2 is reduced to the vertical part 1A of the lower vertical light duct 1. Can be received at. That is, when the installation position of the window is on the same line in the vertical direction, rainwater received at the flange 1A of the vertical light duct 1 installed on the upper floor window falls through the wind vent 1C. Then, it will be received by the eaves part 1A of the eaves-type optical duct 1 installed in the window on the lower floor, and then falls to the ground or the like. Since it is possible to avoid the rainwater received at the upper floor ridge 1A from dropping directly onto the ground or the like by the lower floor ridge 1A, the distance between the ridge 1A and the building 2 is higher in the upper floor. And the wind vent 1C is made large, so that rain water falling from the upper floor can be received by the buttocks 1A of the lower floor. Therefore, for example, it is possible to avoid that rainwater received on the upper floor falls to the ground or the like like a waterfall, and it is possible to avoid hitting a pedestrian or the like directly. Furthermore, providing a large wind vent 1C on the upper floor can sufficiently reduce the force received by the wind on the upper floor where there is a high possibility of receiving a larger wind. In these cases, the same effect can be obtained regardless of whether the bracket 1A is suspended from above by the bracket or supported from below.

Moreover, since the snow accumulated on the heel part 1A melts on the heel part 1A and is treated in the same manner as rainwater after that, it is possible to prevent the snow mass from falling.
Further, an upward needle-like protrusion may be provided on the upper surface of the collar 1A so that a pigeon or the like does not remain on the collar 1A.
As a result of the configuration as described above, the vertical light duct 1 in the present embodiment is easier to harmonize with the external appearance design than a conventional horizontal light duct daylighting unit. The reason for this is that the size, shape, and attachment method are similar to those of the cocoons that have been installed on the outer skin, and they appear to be cocoons at first glance.

  That is, the vertical optical duct 1 having the shape as described above has a relatively small opening surface (for example, about 100 mm) and looks like a cocoon at first glance. easy. Therefore, for example, it is not necessary to devise in order to harmonize with the appearance design, such as providing a daylighting unit in all windows or providing a daylighting unit only on the upper part of the outer wall. In addition, the number of installed light ducts is increased to provide daylighting sections for all windows, or the installation floor of light ducts is not limited to the top floor, and is not limited to any position. Any number of vertical light ducts 1 can be installed.

  In addition, since the vertical light duct 1 in the present embodiment requires a relatively low opening surface of the daylighting section 3, for example, as shown in FIG. 13, the vertical light duct 1 is arranged in multiple stages. It is also possible. In FIG. 13, the saddle type optical duct 1 is arranged in three stages. Thus, by increasing the number of the daylighting units 3 to be arranged, the amount of daylight that can be used is increased, or the daylight guided from the individual vertical light ducts 1 is guided to different sections. It is also possible. When daylight guided from the stacked vertical light ducts 1 is used at different locations, the daylight guided by one vertical light duct 1 is divided and guided to each section. In contrast, almost the same amount of daylight is guided. As described above, since the daylight guided is leveled, even if the distances guided by the vertical light ducts 1 are different, almost the same amount of daylight is guided. Can do. That is, since the amount of light emitted from the light emission port 7a can be made equal, it is not necessary to provide a control device or the like for controlling the amount of light from the light emission port 7a equally.

  In addition, the conventional optical duct has a relatively large opening surface for securing the amount of light received. Therefore, when the optical duct is mounted on the fence, the floor and the floor on the upper floor are correspondingly increased. It is necessary to secure a space for installing the optical duct between the slab. However, as described above, the vertical optical duct 1 according to the present embodiment requires a relatively small opening surface of the vertical optical duct 1, so that the vertical optical duct 1 has a vertical gap between the vertical portion 1A and the floor slab on the upper floor. The height of the space for providing the mold optical duct 1 can be lower. Therefore, application is not limited to buildings with high floors, and the application range can be expanded.

  Further, in this way, the vertical light duct 1 is not limited to a building with a high floor height, that is, can be applied to a building with a relatively low floor height. It can also be applied to a general high-rise building where shelves cannot be applied. In other words, the light shelf is provided with a eave in the middle of the window surface to shield direct sunlight, and takes in light reflected from the eave from the window above the eave and uses it in daylight. For this reason, a relatively large window is required above the fence, and its application is limited to buildings with relatively high floors. Since a high floor height is required, the construction cost per floor area is often high, and daylight from a light shelf may not be available in terms of floor height and price. However, daylight can be used by applying the vertical light duct 1. The light shelf cannot be used for daylight in a room without a window such as a core part, but daylight use by a light duct can be used for daylight in a room without a window such as a core part.

In other words, even when the daylight use by a light shelf, a conventional light duct, or the like is not possible due to the relative position of the portion to be used, the height of the floor, and the price, the vertical light duct 1 as described above. By applying, daylight can be used.
By the way, as a result of measuring the amount of light leveled by irradiating the vertical light duct 1 with light at various angles using pseudo horizontal light, it was confirmed that there was leveling performance. Based on this result, a living room (for example, a washroom, etc., 4.5 m away from the outdoor side end of the heel part 1A using a ridge-shaped optical duct 1 having a ridge part 1A having a thickness of about 0.1 m is used. ² ) When the illuminance when the sunlight is guided to 100 (lx) or less, the illumination power can be reduced by 31.6% when the light is supplemented to be 100 (lx) (9 : 00 to 16:00) was estimated.

  In addition, since the vertical light duct 1 is arranged outdoors and indoors, there is a possibility that outdoor cold air may be transmitted to the indoor side through, for example, a metal duct of the vertical light duct 1. However, by providing the air vent 1C, the outdoor-side metal duct and the indoor-side metal duct are separated, and the outdoor-side cold air is connected to the indoor-side metal duct through the metal duct. It is possible to avoid being transmitted. As a result, cold air is transmitted to the indoor side through the metal duct, so that it is possible to avoid the occurrence of condensation in the indoor metal duct.

In the above embodiment, a case where a horizontal light duct using a prism is used has been described. However, the present invention is not limited to this, and the height of the opening surface is relatively small, and sunlight is kept horizontal. It is also possible to use a horizontal type optical duct designed to guide light.
Moreover, in the said embodiment, although the case where the vertical optical duct 1 was provided on the window frame was demonstrated, it is not necessarily restricted on a window frame, The indoor part 1B is horizontally arrange | positioned on the ceiling board 93. Any position can be used.
Moreover, in the said embodiment, although the case where the indoor part 1B was arrange | positioned horizontally on the ceiling board 93 was demonstrated, it does not necessarily restrict to the ceiling board 93, and it arrange | positions even when there is no ceiling board 93. It is only necessary that the indoor portion 1B can be arranged horizontally, that is, the light guide portion 5 provided in the flange portion 1A and the indoor portion 1B can be maintained horizontally.

  Moreover, if the light guide part 5 can be maintained horizontally, the collar part 1A can be provided more overhanging. For example, as shown in FIG. 14, it is possible to attach the saddle type optical duct 1 to a window provided on the passage side. In this case, since there is a roof of the passage, the flange portion 1A is formed so as to protrude by an amount corresponding to the width of the roof of the passage. For example, the flange portion 1A may be fixed to the roof of the passage. As described above, even when the flange portion 1A is arranged on the roof of the passage, the height of the opening surface of the flange portion 1A is relatively small, so that it is relatively easy to harmonize with the design of the roof.

It should be noted that the scope of the present invention is not limited to the illustrated and described exemplary embodiments, but includes all embodiments that provide the same effects as those intended by the present invention.
Furthermore, the scope of the invention is not limited to the combinations of features of the invention defined by the claims, but may be defined by any desired combination of particular features among all the disclosed features.

DESCRIPTION OF SYMBOLS 1 Vertical type light duct 1A A collar part 1B Indoor part 1C Ventilation 2 Building 3 Daylighting part 5 Light guide part 7 Light emission part

Claims (4)

Having a daylighting unit for collecting sunlight and a light guide unit for guiding the sunlight collected by the daylighting unit, and a bowl-shaped eaves portion arranged outside the building;
A light guide part that guides sunlight and a light emission part that emits sunlight guided by the light guide part into an indoor space, and an indoor part arranged inside the building, ,
The indoor portion has an end portion on the building side of the light guide portion in the ridge portion and an end portion on the outdoor side of the light guide portion in the indoor portion, and the light guide portion in the ridge portion causes the building side end portion to face the building side. Arranged so that sunlight guided to the end is incident on the indoor light guide ,
Furthermore, the said lighting part and the light guide part in the said collar part are formed in a cylinder shape,
The eaves section has eaves optical duct disposed outside the building have between the buildings a predetermined distance as a wind vent, characterized in Rukoto. The eaves portion a gap between the building blocked from the side of the eaves section, eaves optical duct according to claim 1, further comprising a light leakage prevention member formed of a specular reflective material. A rainwater guide plate projecting to the building side is provided at an end of the top surface of the ridge part on the building side, and the end part of the rainwater guide plate on the building side includes the end part on the building side of the heel part and the building side. The vertical light duct according to claim 1 , wherein the vertical light duct is located between the building and the building. Having a daylighting unit for collecting sunlight and a light guide unit for guiding the sunlight collected by the daylighting unit, and a bowl-shaped eaves portion arranged outside the building;
A light guide part that guides sunlight and a light emission part that emits sunlight guided by the light guide part into an indoor space, and an indoor part arranged inside the building, ,
The indoor portion has an end portion on the building side of the light guide portion in the ridge portion and an end portion on the outdoor side of the light guide portion in the indoor portion, and the light guide portion in the ridge portion causes the building side end portion to face the building side. Arranged so that sunlight guided to the end is incident on the indoor light guide ,
Further, a rainwater guide plate projecting to the building side is provided at an end portion of the upper surface of the ridge portion on the building side, and the end portion of the rainwater guide plate on the building side is an end portion of the heel portion on the building side position to the eaves optical duct, characterized in Rukoto between the buildings and.