JP2019179639A - Sunlight daylighting illumination device - Google Patents

Abstract

To provide a sunlight daylighting illumination device that can ensure inexpensive and stable indoor illumination by guiding sunlight indoors while reducing a diameter of a hole bored in a roof.SOLUTION: A sunlight daylighting illumination device includes: a light receiving opening 110 installed outdoors and provided with an opening for taking in sunlight; a light guide part 120 for guiding the received sunlight to indoors; an illumination part 130 for causing the sunlight to be emitted at a predetermined indoor spot; a north side reflection plate 140; an east side reflection plate 150; and a west side reflection plate 160. The east side reflection plate 150 includes an east side substrate and an east side inclined surface that is bent outward on the east side in an upper part of the east side substrate and protrudes above the light receiving opening 110. The west side reflection plate 160 includes a west side substrate and a west side inclined surface that is bent outward on the west side in an upper part of the west side substrate and protrudes above the light receiving opening 110. The east side reflection plate and the west side reflection plate are formed of mirror surfaces. The sunlight irradiated to an undersurface of the east side inclined surface from the east side is reflected downward, and the sunlight irradiated to an undersurface of the west side inclined surface from the west side is reflected downward.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a solar lighting / illuminating device that can secure inexpensive and semi-permanently stable indoor lighting by directing sunlight, which is natural light, directly into a room using a device installed on a rooftop.

  A technology that uses sunlight for indoor lighting is drawing attention. Sunlight is natural light, is inexpensive and is a preferred light source from the viewpoint of energy saving. In the prior art, an optical duct that condenses sunlight and guides it through an optical system has already been put into practical use. As a basic structure, the optical duct of the prior art is provided with an opening on the roof or wall surface, receives sunlight indoors through the opening, and attaches a mirror surface to the inner surface of the cylindrical duct while repeatedly reflecting sunlight. The light is transmitted to a desired location, and sunlight is emitted from the irradiation port of the optical duct and used as illumination light. By utilizing this optical duct as auxiliary lighting for indoor lighting, it has been put into practical use as means for illuminating at low cost without using energy such as electricity.

  However, sunlight is not always a stable light source. Even if the influence of the weather is unavoidable, the sun has the characteristic that the irradiation angle changes momentarily due to fluctuation factors such as daily fluctuation and seasonal fluctuation. If the incident angle of sunlight with respect to the opening axis of the roof or the wall surface increases, the amount of light that can be collected decreases. The conventional light duct has a problem in that the amount of sunlight taken in greatly changes due to changes in solar altitude, and illumination light with a stable amount cannot be obtained.

In the prior art, several daylighting apparatuses are known that take sunlight from the outside indoors and use it for indoor lighting.
For example, a daylighting device disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2006-228663) is known.
As shown in FIG. 6, the daylighting device disclosed in Patent Document 1 receives the light from the daylighting means 4 for receiving sunlight provided on the rooftop, the stationary condensing reflection plate 17 provided therein, and the daylighting means 4. A daylighting device provided with a cylindrical light guide means 6 that guides in a predetermined direction while being reflected by the inner surface thereof, and an irradiation means 8 that is provided on the indoor ceiling 12 and that irradiates the light guided by the light guide means 6 indoors In particular, the light guiding means 6 is provided with an enlarged portion 68 whose cross-sectional area is enlarged from the daylighting means 4 side to the irradiating means 8 side, and the lighting means for illuminating the interior through the enlarged portion 68 is disclosed. The point connected to 72 is characteristic.

For example, a daylighting device disclosed in Patent Document 2 (Japanese Patent Laid-Open No. 2011-003534) is known.
As shown in FIG. 7, the daylighting device disclosed in Patent Document 2 includes an optical duct system including a solar daylighting unit 2, a light guiding unit 4, and a light emitting unit 5 provided outdoors such as a wall surface. It is disclosed that it includes a structure in which at least two or more kinds of resins are alternately laminated in 30 layers or more, and is characterized in that light can be transmitted to a desired place indoors by the principle of optical fiber.

Further, for example, a daylighting device disclosed in Patent Document 3 (Japanese Patent Application Laid-Open No. 11-025726) is known.
As shown in FIG. 8, the daylighting device disclosed in Patent Literature 3 is configured to connect the daylighting device 12 and the light guide device 14 to constitute the illumination system 11. The daylighting device 12 includes an optical system 21 and is covered with a cover body 22. The cover 22 is provided with an optical filter 28 including a light interference multilayer film that reflects infrared light, and is characterized in that the illumination light is captured while the infrared light is reflected to prevent the indoor temperature from rising.

For example, a daylighting device disclosed in Patent Document 4 (Japanese Patent Laid-Open No. 09-270204) is known.
The daylighting apparatus of Patent Document 4 employs a method of tracking the sunlight axis by rotating an aperture or an optical system according to time. As shown in FIG. 9, a lens holder 2 in which a large number of lenses 11 to 1n are disposed, a lens holder support member 7 that rotatably holds the lens holder 2 around a horizontal axis 6, and the lens It has a rotation base 8 on which a holder support member is rotatably mounted around a vertical axis, and a reflector disposed behind the lens holder. The horizontal axis 6 and the rotating base 8 are controlled by the sensor 13 so that the lens surface of the lens holder faces the sun, and the sunlight collected by the lens is reflected by the reflecting plate and is reflected on the base. It is a daylighting system that is led indoors below.

For example, a daylighting device disclosed in Patent Document 5 (Japanese Patent Laid-Open No. 11-232915) is known.
As shown in FIG. 10, the daylighting device disclosed in Patent Document 5 introduces a concave mirror-like condensing means 2 serving as a daylighting unit installed outdoors such as a rooftop, and introduces the collected sunlight into an indoor space using an optical fiber 3. A daylighting system that emits sunlight from a predetermined illumination unit 9 via a light guide 4 is disclosed. Here, the concave mirror of the condensing means 2 moves while following the irradiation direction of sunlight.

JP 2006-228663 A JP 2011-003534 A Japanese Patent Laid-Open No. 11-025726 JP 09-270204 A JP-A-11-232915

As described above, there are some known daylighting apparatuses that take in sunlight indoors and use it for indoor lighting. However, these conventional techniques have problems to be solved respectively.
That is to secure a light quantity in a time zone where the irradiation angle of sunlight is low, such as morning and evening, though it is an inexpensive and simple structure. In other words, the conventional technology can obtain a light amount in the daytime or at a specific time, but cannot provide a sufficient amount of light in the morning or evening, and is expensive with an operating part such as a motor.

  According to the daylighting device disclosed in Patent Document 1 (Japanese Patent Laid-Open No. 2006-228663), the cylindrical light guide means 6 penetrating from the outside to the inside is provided, and the sunlight is surely guided indoors. It can be done. However, a sufficient amount of light cannot be secured in the morning and evening hours when the sunlight irradiation angle is low. Although what is called the stationary condensing reflector 17 is provided, it does not work against sunlight in the time zone when the irradiation angle in the morning or evening is low.

  According to the daylighting device disclosed in Patent Document 2 (Japanese Patent Application Laid-Open No. 2011-003534), sunlight can surely be guided indoors by an optical duct system provided from outside to inside. However, a sufficient amount of light cannot be secured in the morning and evening hours when the sunlight irradiation angle is low. Only the opening is provided on the south wall, and it cannot receive sunlight in the morning or evening hours when the irradiation angle is low.

  Next, according to the daylighting device disclosed in Patent Document 3 (Japanese Patent Laid-Open No. 11-025726), the sunlight collected by the optical system 21 installed outdoors is guided indoors by the light duct, so that the sunlight is surely emitted. It can be led indoors. However, the optical system is a concave mirror or the like installed in the south-central direction, and the amount of light cannot be secured sufficiently in the time zone where the sunlight irradiation angle is low, such as in the morning or evening. It only has an optical system on the roof on the south side, and it cannot sufficiently receive sunlight in a time zone where the irradiation angle in the morning or evening is low.

  Next, according to the daylighting device disclosed in Patent Document 4 (Japanese Patent Laid-Open No. 09-270204), the amount of light that can be taken increases, but a large rotation mechanism that tracks the sunlight axis is required, and natural light is emitted. As a system using solar light, the cost is rather high, and it is assumed that there are many failures, so the maintenance load is large, and it must be said that the system is not suitable for practical use.

  Next, according to the daylighting device disclosed in Patent Document 5 (Japanese Patent Laid-Open No. 11-232915), as in Patent Document 4, the amount of light that can be collected is increased, but a large amount of rotation that tracks the solar axis. As a system that uses sunlight, which is natural light, requires a mechanism, it is rather expensive, and it is assumed that there are many failures, so the maintenance load is large, and it must be said that it was not suitable for practical use. I don't get it.

As described above, each of the conventional daylighting devices using sunlight has problems.
Therefore, the present invention is an inexpensive and simple structure that guides sunlight, which is natural light, indoors at low cost and efficiently by the daylighting unit installed on the roof, and reduces the diameter of the hole that opens in the roof. An object of the present invention is to provide a solar lighting / illuminating device capable of securing a light amount in a time zone in the evening when the irradiation angle of sunlight is low.

  In order to achieve the above object, a daylighting illumination apparatus according to the present invention is installed outdoors and has a light receiving opening provided with an opening for taking in sunlight, and a light guide for guiding the sunlight received by the light receiving opening to the inside. A lighting unit that emits the sunlight transmitted through the light guide unit at a predetermined location indoors, an east side substrate erected along the south-central direction in the light receiving opening, and the east side An east-side reflector having an east-side inclined surface that is bent outwardly on the east side at the top of the substrate and protrudes above the light-receiving opening, a west-side substrate that is erected along the south-center direction in the light-receiving opening, and A west-side reflector is provided that has a west-side inclined surface that is bent outward at the top of the west-side substrate and protrudes above the light receiving opening, and sunlight irradiated from the east side is reflected downward on the lower surface of the east-side inclined surface. In the light receiving opening Only is irradiated, sunlight irradiated from the west to the lower surface of the western inclined surface is sunlight daylighting illumination device configured to be irradiated toward the light receiving aperture is reflected downward.

  With the above configuration, the east side inclined surface that protrudes above the light receiving opening receives sunlight coming from the east side, that is, sunlight in the time when the sun and morning are not so high, Reflecting toward the light, it is possible to effectively increase the amount of light in the morning from the morning. In addition, the west-side inclined surface that protrudes above the light-receiving opening receives sunlight coming from the west, that is, sunlight during sunset and afternoon hours, and reflects it toward the light-receiving opening. Thus, the amount of light from the afternoon to the evening can be effectively increased.

Here, it is necessary to devise so that the east-side reflector and the west-side reflector are obstacles to sunlight and the amount of received light is not reduced in a time zone when the daytime sun is relatively high. Therefore, sunlight irradiated from the east side with respect to the upper surface of the inclined surface on the west side (that is, sunlight in the morning hours when the daytime sun is relatively high) is reflected toward the east side reflector. The angle at which the light receiving opening is irradiated through the reflection between the east side reflector and the west side reflector. In addition, sunlight irradiated from the west side with respect to the upper surface of the inclined surface on the east side (that is, sunlight in the afternoon when the daytime sun is relatively high) is reflected toward the west reflector, It is preferable that the angle is such that the light receiving opening is irradiated through the reflection between the east side reflection plate and the west side reflection plate.
As an example, the bending angle of the east side inclined surface is 40 to 50 degrees, and the bending angle of the west side inclined surface is 40 to 50 degrees.

  With the above configuration, the east-side inclined surface and the west-side inclined surface are simply the sun even in the time zone in which sunlight falls on the east-side reflector and the west-side reflector in the time zone when the daytime sun is relatively high. It is not an obstacle that blocks light, but sunlight reflected on the upper surface is repeatedly reflected between the two and irradiated to the light receiving opening below.

  Further, it is possible to increase the amount of light by providing a north reflector on the north side and reflecting sunlight coming from the south side from the north side. That is, the north-side reflector is erected at an angle higher than the light-receiving opening and closer to the north side in the light-receiving opening and at an angle at which received sunlight is reflected downward and irradiated toward the light-receiving opening.

  With the above configuration, the north-side reflecting plate is raised higher than the light-receiving opening and can be reflected downward, so that the light-receiving area of sunlight coming from the south side during the day increases and the amount of light can be increased.

Next, the shape and installation angle of the light receiving opening serving as the base in the sunlight lighting / illuminating device having the above-described configuration will be described.
The inner surface shape of the opening of the light receiving opening part of the inner surface shape of the inverted frustoconical cylindrical body, the opening opens in the south-central direction, and the upper apex side of the opening edge is at least the summer-solstice angle Opened above, the lower top edge of the opening edge is opened at least below the south-central angle of the winter solstice, and the diameter of the light guide part is reduced to be smaller than the diameter of the opening edge of the light receiving opening part. It is preferable to have a structure.
By the said structure, it can devise so that the opening shape of the light-receiving opening part fixed toward the south side may satisfy | fill the conditions which can receive sunlight most efficiently.

  According to the daylighting illumination device according to the present invention, the east-side reflector and the west-side reflector are provided so as to be higher than the light receiving opening, while having an inexpensive and simple structure. The amount of light can be secured in a low time zone. Since the north reflector that is raised higher than the light receiving opening is also provided, the amount of light in the daytime can be effectively increased. Further, the installation angle of the light receiving opening is in accordance with the daily fluctuation and the annual fluctuation, and it is possible to perform efficient daylighting according to the daily fluctuation and the annual fluctuation at a low cost.

It is the figure which showed simply the structure of the lighting illumination apparatus 100 concerning Example 1. FIG. It is a figure explaining the installation angle of the light-receiving opening part. It is a figure explaining the mode of the light reception of the sunlight in the time zone when the sun is comparatively high in the daytime. It is a figure which shows simply a mode when sunlight is irradiated from the east side with respect to the east side reflecting plate 150, and a mode when sunlight is irradiated from the west side with respect to the west side reflecting plate 160. It is a figure explaining reflection of the sunlight by the east side reflector 150 and the west side reflector 160 in the time zone when the sun is comparatively high in the daytime. It is a figure which shows the lighting apparatus disclosed by patent document 1 (Unexamined-Japanese-Patent No. 2006-228663) of a prior art. It is a figure which shows the lighting device disclosed by patent document 2 (Unexamined-Japanese-Patent No. 2011-003534) of a prior art. It is a figure which shows the lighting apparatus disclosed by patent document 3 (Unexamined-Japanese-Patent No. 11-025726) of a prior art. It is a figure which shows the lighting apparatus disclosed by patent document 4 (Unexamined-Japanese-Patent No. 09-270204) of a prior art. It is a figure which shows the lighting apparatus disclosed by patent document 5 (Unexamined-Japanese-Patent No. 11-232915) of a prior art.

  Hereinafter, embodiments of the daylighting illumination device of the present invention will be described. The present invention is not limited to these examples.

A configuration example of the daylighting illumination device 100 according to the present invention will be described with reference to the drawings.
FIG. 1 is a diagram simply illustrating a configuration example of a daylighting illumination device 100 according to the first embodiment.
1A is a plan view seen from above, FIG. 1B is a front view, and FIG. 1C is a longitudinal sectional view taken along line AA in FIG. In addition, in FIG.1 (b), the cross section of a roof and the indoor light guide part 120 and the illumination part 130 are also shown in figure simply.
As shown in FIG. 1, a daylighting illumination device 100 according to the present invention includes a light receiving opening 110, a light guide 120, an illumination unit 130, a north reflector 140, an east reflector 150, a west reflector 160, and a transparent dome 170. It is the composition provided with. The figure also shows a roof 200 as an installation location and a roof opening 210 as an attachment hole.
Hereinafter, each component will be described.

As shown in FIG. 1, the light receiving opening 110 includes an opening 111, an opening edge 112, and an opening base end 113.
The light receiving opening 110 is installed outdoors and has an opening for taking in sunlight. Here, the light receiving opening 110 is attached so that the opening base end 113 fits into the roof opening 210 provided in the roof 200. ing.
Here, since part of the daylighting lighting device 100 for concentrated light according to the present invention is installed on the outer wall of a building, each member is configured to conform to the regulations of the Fire Service Law or the Building Standard Law. Is preferred.

Next, the shape of the opening 111 of the light receiving opening 110 will be described.
In this configuration example, as shown in FIG. 1, the inner surface shape of the opening 111 of the light receiving opening 110 is a partial shape of the inner surface shape of the inverted truncated cone-shaped cylinder. An inverted frustoconical cylindrical body is provided obliquely and the lower side is cut horizontally. Therefore, the diameter of the opening base end portion 113 is smaller than the diameter of the opening edge 112. Since the diameter of the opening base end portion 113 is narrower than the diameter of the opening edge 112, sunlight having a larger area than that of the roof opening 210 can be condensed. Further, by reducing the diameter of the opening base end portion 113 rather than the diameter of the opening edge 112, the area of the roof opening 210 serving as a through hole opened to the roof 200 can be suppressed, and the burden of installation work on the roof can be suppressed. It also leads to.

  Although the size of the light receiving opening 110 is not limited, for example, in the example of FIG. 1, the diameter of the opening edge 112 is 500 φ, the diameter of the opening base end 113 is 350 φ, and the whole is a part of an inverted frustoconical cylindrical body. Become. Of course, when it is desired to increase the illuminance from the illumination unit 130 in the room, it goes without saying that the amount of light collected increases if the size of the light receiving opening 110, particularly the diameter of the opening edge 112 is increased. In the present invention, since the amount of light received in the large area of the opening edge 112 in this way passes through the roof opening 210 with a small area of the opening base end portion 113, it is condensed at the opening base end portion 113. This is called “concentrated light”.

Next, the installation angle of the light receiving opening 110 will be described.
The light receiving opening 110 is attached so that the opening 111 faces in the south-central direction. Here, the opening angle of the opening 111 and the attachment angle to the roof 200 are devised. As shown in FIG. 1, the upper apex of the opening edge 112 is open at least at the south-central angle of the summer solstice, and the lower apex of the opening edge 112 is open at least at the south-central angle of the winter solstice. It is attached.

FIG. 2 is a diagram illustrating the installation angle of the light receiving opening 110.
FIG. 2A is a diagram simply showing the relationship between the incident angle of sunlight at the south-central angle of the summer solstice and the angle of the upper apex side of the opening edge 112 of the light receiving opening 110 of the daylighting illumination device 100. is there. The upper side of the opening edge 112 of the light receiving opening 110 is shown as the center.
In Japan, for example, in the case of Tokyo, the south-south angle is about 78 degrees because of the difference in latitude in Japan. In the example shown in FIG. 2A, the opening angle of the upper side of the opening edge 112 of the light receiving opening 110 is 80 degrees, and the opening angle of the upper side of the opening edge 112 of the light receiving opening 110 is larger. Is slightly larger than the incident angle of sunlight at 78 degrees in the south-south angle of the summer solstice, it can be seen that the sunlight in the summer solstice can be efficiently condensed at the opening 111 of the light receiving opening 110.

FIG. 2 (b) is a diagram simply showing the relationship between the incident angle of sunlight at the south-central angle of the winter solstice and the angle of the lower apex of the opening edge 112 of the light receiving opening 110 of the daylighting illumination device 100. It is. The light receiving opening 110 is mainly illustrated.
For example, in the case of Tokyo, the south-central angle of the winter solstice is about 32 degrees. In the example shown in FIG. 2B, the opening angle of the lower top side of the opening edge 112 of the light receiving opening 110 is 30 degrees. ing. Since the opening angle at the lower side of the opening edge 112 of the light receiving opening 110 is slightly lower than the incident angle of sunlight at the south-central angle of the winter solstice, which is 32 degrees, the opening 111 of the light receiving opening 110 is efficiently formed. It can be seen that sunlight from the winter solstice can be collected.

The light guide part 120 guides the sunlight received by the light receiving opening part 110 indoors. For example, the light guide unit 120 is a cylindrical body, and the inner wall surface thereof is finished with a mirror surface having a high light reflectance. Since the light guide unit 120 serves as a medium for the sunlight received by the light receiving opening 110 to the illumination unit 130, it is preferable that the light attenuation rate is small. In addition to a structure in which the inner wall surface is formed of a mirror surface, a structure formed by combining transparent resin materials according to the principle of an optical fiber may be used.
The diameter of the light guide unit 120 is not particularly limited. For example, the diameter may be approximately the same as the diameter of the opening base end portion 113 of the light receiving opening 110, or may be smaller than the diameter of the opening base end portion 113 of the light receiving opening 110. However, it may be a large diameter.

The illuminating unit 130 is a translucent member attached to a predetermined indoor ceiling or wall surface, and emits sunlight transmitted through the light guide unit 120 at a predetermined indoor location. . In the case of general electric lighting, an electric light source such as a light emitting element is provided inside. However, the lighting unit 130 is electrically connected to the light guide unit 120 on the inner side, and is taken by the light receiving opening 110 to be guided. Sunlight that has reached through the light unit 120 serves as a light source and is emitted through the illumination unit 130.
Here, as a member of the illumination unit 130, a ground glass file panel can be used to diffuse light.

Next, the structure and effect of the north side reflection plate 140, the east side reflection plate 150, and the west side reflection plate 160 will be described.
First, the north reflector 140 will be described.
FIG. 3 is a diagram for explaining how sunlight is received in a daytime when the day is relatively high (for example, 11:00 am).
The north reflecting plate 140 is a member having a high reflectivity installed near the north side inside the light receiving opening 110. At least the south side has a mirror finish.
Although the shape of the north reflecting plate 140 is not limited, the lower edge is curved along the edge of the light receiving opening 110 here, and is formed in a curved shape as shown in FIG.
The installation angle of the north reflecting plate 140 is provided with an inclination more than the opening angle of the upper side of the opening edge 112 of the light receiving opening 110, and the light receiving opening below the sunlight coming from the southeast to the southwest It reflects toward 110.
FIG. 3 is a diagram illustrating a state in which sunlight passing through the upper side of the light receiving opening 110 and reaching the roof behind the light is reflected by the north reflecting plate 140 and irradiated toward the light receiving opening 110. .
During the day, the irradiation angle is relatively high, and the sunlight directly incident on the light receiving opening 110 is received as it is, but the sunlight irradiated on the north reflecting plate 140 on the north side is further reflected to the light receiving opening 110. This increases the amount of light received.

Next, the east side reflecting plate 150 and the west side reflecting plate 160 will be described.
As shown in FIG. 1, the east-side reflecting plate 150 is bent in the south-center direction in the light receiving opening 110 and is bent outward from the east side at the upper part of the substrate. It also has an east slope that protrudes upward.

As shown in FIG. 1, the west-side reflector 160 is bent in the south-center direction within the light-receiving opening 110, and is bent outward from the west side at the top of the substrate. It also has a west slope that protrudes upward.
In this example, both the east-side reflector 150 and the west-side reflector 160 are formed by mirror surfaces having high reflectance on both front and back surfaces.
In this example, as shown in FIG. 1, the east side reflector 150 and the west side reflector 160 are erected in the center of the light receiving opening 110 in a pair of east and west, and the east side slope and the west side slope are seen from the front direction. It has a shape that opens outward like the letter Y.

Sunlight near the morning has a low irradiation angle, and it is difficult for the sunlight to efficiently enter the light receiving opening 110, but by providing the east side reflector 150, the morning sun coming from the east side or the morning where the irradiation angle is relatively low The sunlight can be reflected and received by the light receiving opening 110.
FIG. 4A is a diagram simply showing how the east side reflector 150 receives and reflects sunlight near the morning. The light receiving opening 110 and the east side reflecting plate 150 are mainly shown.
As shown in FIG. 4A, the sunlight near the morning is incident at a low angle, so it is difficult to directly enter the opening 111 of the light receiving opening 110, but the east side reflector that is raised higher than the light receiving opening 110. The sunlight reflected at 150 is folded back toward the light receiving opening 110, and the reflected light can be collected at the opening 111 of the light receiving opening 110.
For example, the east-side inclined surface has a bending angle of about 40 to 50 degrees, and the received sunlight is reflected downward and can be received by the light receiving opening 110.

Similarly, the sunlight near the evening has a low irradiation angle, and it is difficult for the sunlight to efficiently enter the light receiving opening 110, but by providing the west reflector 160, the sunset that comes from the west or a relatively irradiation angle of Low sunlight in the late afternoon can be reflected and received by the light receiving opening 110.
FIG. 4B is a diagram simply showing how the west reflector 160 receives and reflects sunlight near the evening. The light receiving opening 110 and the west reflection plate 160 are mainly shown.
As shown in FIG. 4B, since the sunlight near the evening is incident at a low angle, it is difficult to directly enter the opening 111 of the light receiving opening 110, but the west reflector is raised higher than the light receiving opening 110. The sunlight reflected at 160 is folded back toward the light receiving opening 110, and the reflected light can be condensed on the opening 111 of the light receiving opening 110.
For example, the west-side inclined surface has a bending angle of about 40 to 50 degrees, and the received sunlight is reflected downward and can be received by the light receiving opening 110.

Next, the point that the east-side inclined surface of the east-side reflecting plate 150 and the west-side inclined surface of the west-side reflecting plate 160 do not interfere with the incidence of sunlight in a time zone where the sun is relatively high near noon will be described.
FIG. 5 is a diagram for explaining the reflection of sunlight by the east-side reflector 150 and the west-side reflector 160 during the daytime when the sun is relatively high. For example, it is assumed that it is about 11 am.

As shown in FIG. 5, both sides of the east side inclined surface of the east side reflector 150 and both sides of the west side inclined surface of the west side reflector 160 are mirror-finished, and the angle of the east side inclined surface of the east side reflector 150 is on the upper surface. On the other hand, the sunlight irradiated from the west side has an angle at which it is reflected toward the west side reflection plate 160. On the other hand, the angle of the west-side inclined surface of the west-side reflecting plate 160 is such that sunlight irradiated from the east side with respect to the upper surface is reflected toward the east-side reflecting plate 150.
That is, among the sunlight irradiated from above on the east-side reflecting plate 150 and the west-side reflecting plate 150, the sunlight irradiated on the east-side inclined surface and the west-side inclined surface repeatedly reflects between them, and the light receiving opening portion. 110 is irradiated. In addition, the sunlight which passed between the east side inclined surface and the west side inclined surface goes straight as it is, and is irradiated to the light-receiving opening part 110.

As shown in FIG. 5, the east-side inclined surface of the east-side reflecting plate 150 and the west-side inclined surface of the west-side reflecting plate 160 reflect a part of sunlight that is directly incident on the light receiving opening 110, but are reflected. Since the sunlight repeatedly reflects and eventually enters the light receiving opening 110, the amount of sunlight does not decrease.
Further, the sunlight that enters the light receiving opening 110 through the outside of the east-side inclined surface of the east-side reflecting plate 150 is received as it is, and also enters the light-receiving opening 110 through the outside of the west-side inclined surface of the west-side reflecting plate 160. Sunlight is received as it is.

  As mentioned above, although preferred embodiment in the structural example of the lighting illumination apparatus of the concentrated light of this invention was illustrated and demonstrated, it is understood that various changes are possible without deviating from the technical scope of this invention. Will.

  The concentrated light daylighting illumination device of the present invention can be widely applied to devices that use sunlight as indoor lighting regardless of lighting applications.

DESCRIPTION OF SYMBOLS 100 Concentrated light lighting illuminator 110 Light receiving opening part 111 Opening 112 Opening edge 113 Opening base end part 120 Light guide part 130 Illumination part 140 North side reflecting plate 150 East side reflecting plate 160 West side reflecting plate 170 Transparent dome body

Claims (5)

A light receiving opening that is installed outdoors and has an opening for taking in sunlight;
A light guide portion for guiding sunlight received by the light receiving opening portion indoors;
An illuminating unit that emits the sunlight transmitted through the light guide unit at a predetermined location indoors;
An east side reflector provided with an east side reflector that is erected along the south-middle direction in the light receiving opening, and an east side inclined surface that is bent outward from the east side at the upper part of the east side substrate and protrudes above the light receiving opening; ,
A west-side reflector provided with a west-side substrate erected along the south-center direction in the light-receiving opening, and a west-side inclined surface that is bent to the west-side outward at the top of the west-side substrate and protrudes above the light-receiving opening. Prepared,
Sunlight irradiated from the east side to the lower surface of the east-side inclined surface is reflected downward and irradiated toward the light receiving opening, and sunlight irradiated from the west side to the lower surface of the west-side inclined surface is reflected downward and receives the light. A solar lighting / illuminating device configured to be irradiated toward the opening. Sunlight irradiated from the east side with respect to the upper surface at an angle of the west-side inclined surface is reflected toward the east-side reflecting plate, and irradiated to the light receiving opening through reflection between the east-side reflecting plate and the west-side reflecting plate. Angle to be
Sunlight irradiated from the west side with respect to the upper surface of the inclined surface on the east side is reflected toward the west side reflection plate and irradiated to the light receiving opening through reflection between the east side reflection plate and the west side reflection plate. The sunlight lighting and illuminating device according to claim 1, wherein the solar lighting and lighting device is configured so as to be at an angle.   The daylighting illumination device according to claim 2, wherein a bending angle of the east side inclined surface is 40 to 50 degrees, and a bending angle of the west side inclined surface is 40 to 50 degrees.   A north-side reflecting plate that is erected higher on the north side in the light-receiving opening than the light-receiving opening and is adjusted to an angle at which the received sunlight is reflected downward and irradiated toward the light-receiving opening. The solar light lighting and illuminating device for concentrated light according to any one of claims 1 to 3.   The shape of the inner surface of the opening of the light receiving opening is a part of the shape of the inner surface of an inverted frustoconical cylindrical body, the opening is opened in the south-central direction, and the upper top side of the opening edge is at least in the summer solstice It opens above the angle, and the lower top edge of the opening edge opens at least below the south-central angle of the winter solstice, and the diameter of the light guide section is narrowed to be smaller than the diameter of the opening edge of the light receiving opening section. The solar light illumination device according to any one of claims 1 to 4, wherein

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