JP2014089870A - Natural lighting device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve a lighting performance in a time range at the morning and the evening where a solar altitude is low at a building lighting part with its upper part being opened that is preferable for a circumstance of a guest room and the like at a hotel where daytime lighting is not so important.SOLUTION: A morning solar light reflection plate 4 is arranged at a north-west side peripheral edge part 2a of a building lighting part 2, and an evening solar light reflection plate 4 is arranged at an east-southern side peripheral edge part 2d. A shape of each of the morning solar light reflection plate 4 and the evening solar light reflection plate 4 is a right triangle and its height variation is set as an opposite relation with respect to a longitudinal direction x. Reflection light L1 of the morning solar light advanced from above the lower part of the evening solar light reflection plate 4 toward an inner reflection surface 4a of the morning solar light reflection plate 4 and reflection light L2 of the evening solar light advanced from above the lower part of the morning solar light reflection plate 4 toward an inner reflection surface 4a' of an evening solar light reflection plate 4' incident to the building lighting part 2. Various other shapes of the morning solar light reflection plate and the evening solar light reflection plate are also disclosed.

Description

  The present invention relates to a daylighting device for improving daylighting performance in a time zone where the solar altitude in the morning and evening is low in a building daylighting section opened upward.

  In particular, as a morning sunlight reflecting plate (evening sunlight position side) and an evening sunlight reflecting plate (morning sunlight incident side) disposed on the opposite peripheral edge of the building lighting section, each has an inner reflection surface, and The present invention relates to a daylighting apparatus that uses a reflecting plate whose height changes in the longitudinal direction after being arranged in a building daylighting unit are opposite to each other.

  “The change in height in the longitudinal direction is opposite to each other” of each reflector for morning sunlight and evening sunlight is an outline, for example, the morning sunlight reflector in the shape of a right triangle is in the direction from the south side to the north side. And the evening sunlight reflecting plate having a right triangle shape is also lowered along the direction.

  That is, the morning sunlight reflecting plate and the evening sunlight reflecting plate having a right triangle shape are arranged so as to face each other so that the hypotenuses that determine the respective heights are alternately arranged.

  In the installation situation of the morning sunlight reflecting plate and evening sunlight reflecting plate having various shapes described later including such a right triangle shape, one high portion and the other low portion (including a zero height portion). Are facing each other.

  Part of the morning sunlight travels from above the lower part of the evening sunlight reflector to the inner reflection surface of the opposite morning sunlight reflector, and the reflected light enters the building lighting section.

  Further, part of the evening sunlight travels from above the lower part of the morning sunlight reflecting plate to the inner reflection surface of the evening evening sunlight reflecting plate on the opposite side, and the reflected light enters the building lighting section.

  For example, in a guest room of a hotel, daylighting is generally not so important, and daylighting performance in the late afternoon after check-in and early morning in the morning before checkout is particularly important.

  The present invention is thus a daylighting device that is intended to make each of morning sunlight and evening sunlight enter a building lighting section such as a light duct or toplight in the same manner.

  In the present specification, east, west, north, and south respectively indicate directions when the daylighting device is disposed in the northern hemisphere. In the southern hemisphere, of course, the “north-south” relationship is reversed.

  Conventionally, there has been proposed a daylighting apparatus in which a sunlight reflecting plate is installed on the peripheral part of a rectangular building lighting part opened upward (see, for example, FIG. 2 of Patent Document 1).

  This sunlight reflecting plate is an upright flat plate having the same height, and is provided at, for example, the southern peripheral portion of the building lighting section, and the reflected light is incident on the optical duct.

Japanese Patent Laid-Open No. 11-203917

  According to the present invention, the solar light reflectors are opposite to each other at the opposite peripheral portions (the evening sunlight position side and the morning sunlight position side) of the building lighting part, as described above, with respect to the height change in the longitudinal direction of the reflection plate. The purpose is to improve the daylighting performance in a specialized form in the time zone when the solar altitude is low in the morning and evening.

  That is, the reflected light of morning sunlight that has traveled from the lower part of the evening sunlight reflector (morning sunlight position side) to the inner reflection surface of the morning sunlight reflector (evening sunlight position side) In the morning and evening, the reflected light of evening sunlight that has entered the building's daylighting part from the lower part of the morning sunlight reflector to the inner reflection surface of the evening sunlight reflector is incident on the building lighting section. We are trying to improve.

  It is another object of the present invention to reduce the manufacturing cost and simplify the management of the entire reflector by setting the morning sunlight reflector and the evening sunlight reflector to the same flat plate shape.

  In addition, design of the entire daylighting device is ensured by ensuring the symmetry of the overall shape, such as the morning sun light reflector, the evening sun light reflector, and the building daylighting part where it is installed, which consists of such height changes. The purpose is to plan.

The present invention solves the above problems as follows.
(1) A light reflector (for example, a morning sunlight reflector described later) for improving the daylighting performance in a time zone when the solar altitude in the morning and evening is low in a building lighting section (for example, a building sunlight section 2 described later) opened upward. 4-10, in the daylighting device provided with evening sunlight reflectors 4′-10 ′)
The light reflector is
A morning sun light reflector (for example, a morning sun light reflector 4 to 10 described later) disposed on one (for example, a northwest side edge 2a described later) of the opposing peripheral edge of the building lighting section, and the counter peripheral edge It consists of the evening sunlight reflector (for example, the evening sunlight reflector 4 ′ to 10 ′ described later) disposed on the other (for example, the southeast peripheral edge 2d described later),
The morning sunlight reflector and the evening sunlight reflector are
Each has an inner reflection surface (for example, inner reflection surfaces 4a to 10a and 4a ′ to 10a ′ described later),
The change in height in the longitudinal direction after the arrangement to the building daylighting unit is set in an opposite relationship to each other,
In the building lighting section,
Reflected light of morning sunlight that has entered the inner reflective surface of the morning sunlight reflector without being blocked by the evening sunlight reflector,
Reflected light of evening sunlight that has advanced to the inner reflective surface of the evening sunlight reflector without being blocked by the morning sunlight reflector,
Use things.
(2) In (1) above,
The morning sunlight
Passing over the lower part of the evening solar reflector and proceeding to the inner reflective surface of the morning solar reflector,
The evening sunlight is
Passing over the lower part of the morning solar reflector and proceeding to the inner reflective surface of the evening solar reflector,
Use things.
(3) In the above (1) and (2),
The morning sunlight reflector and the evening sunlight reflector are
It is a reflector of the same flat plate arranged in an opposing state,
Use things.
(4) In the above (1), (2), (3),
The morning sunlight reflector and the evening sunlight reflector are
It is arranged in a standing state on the opposite peripheral edge of the building lighting part,
Use things.
(5) In the above (1), (2), (3), (4),
The morning sunlight reflector and the evening sunlight reflector are
Each of them has a shape of a right triangle (for example, morning sunlight reflector 4 and evening sunlight reflector 4 ′ described later),
Use things.

  The daylighting apparatus having the above configuration is the subject of the present invention.

The present invention is based on the above problem solving means.
(11) To improve the daylighting performance in a specialized form in the time zone when the solar altitude is low in the morning and evening,
(12) Reduce the manufacturing cost and simplify management of the morning sunlight reflector and the evening sunlight reflector.
(13) To design the whole daylighting device,
You can do that.

It is explanatory drawing which shows the lighting apparatus which installed two sets of a pair of morning sunlight reflecting plates and evening sunlight reflecting plates (the 1) in the building lighting part in the opposing state. It is explanatory drawing which shows the lighting device which consists of a morning sunlight reflecting plate and evening sunlight reflecting plate which were respectively used in FIG. It is explanatory drawing which shows the lighting device which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 2). It is explanatory drawing which shows the lighting device which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 3). It is explanatory drawing which shows the lighting apparatus which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 4). It is explanatory drawing which shows the lighting device which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 5). It is explanatory drawing which shows the lighting apparatus which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 6). It is explanatory drawing which shows the lighting apparatus which consists of a pair of morning sunlight reflecting plate and evening sunlight reflecting plate (the 7).

  The form for implementing this invention is demonstrated using FIGS. 1-8.

  The constituent elements (for example, the northwest side peripheral edge portion 2a) of the “number + alphabet” reference number used in FIGS. 1 to 8 are a part of the constituent elements (for example, the building daylighting section 2) of the reference numeral. Show.

In FIG.
1 is the roof of the building where the daylighting equipment is installed,
2 is a rectangular building lighting section (used in FIGS. 1 to 8) provided on the rooftop 1;
2a is the northwestern periphery of the building lighting section,
2b is a high column for attaching a reflector plate provided at the northeast side end portion and the center portion of the northwest side peripheral edge 2a;
2c is a low column for attaching a reflector provided at the southwest end of the northwest peripheral edge 2a.
2d is the southeastern peripheral edge of the building lighting section,
2e is a high column for attaching a reflector plate provided at the southwest end portion and the central portion of the southeast peripheral edge 2d.
2f is a low column for attaching the reflector provided at the northeast end of the southeast side peripheral edge 2d.
3 is a well-known light propagation duct extending from the building lighting section 2 into the building,
Respectively.

1 to 8,
4 to 10 are plate-shaped morning sun light reflectors that are attached to the pillars 2b and 2c of the building lighting unit 2 in a standing state,
4a to 10a are specular specular inner reflecting surfaces formed on the inner side of the morning sunlight reflecting plates 4 to 10 (building daylighting side),
4 ′ to 10 ′ are in a standing state, that is, in a parallel state with the morning sunlight reflecting plates 4 to 10 (4 ′ to 9 ′ are in a parallel opposite state) and are attached to the columns 2e and 2f of the building lighting unit 2 Evening sunlight reflector,
4a ′ to 10a ′ are specular inner reflection surfaces formed on the inner side (building daylighting side) of the sunlight reflecting plates 4 ′ to 10 ′ in the evening,
Respectively.

Also,
As for L1, morning sunlight progresses from the upper part of each lower part of evening sunlight reflectors 4'-10 'to the inner reflective surfaces 4a-10a of morning sunlight reflectors 4-10, and the reflected light there is a building. Morning sunlight path when entering the daylighting unit 2,
In L2, evening sunlight travels from the lower part of each of the morning sunlight reflecting plates 4 to 10 to the inner reflecting surfaces 4a ′ to 10′a of the evening sunlight reflecting plates 4 ′ to 10 ′, and the reflections there. Evening sunlight path when light is incident on the building lighting part 2,
x is a longitudinal direction as a reference direction when verifying a change in height of each of the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′,
Respectively.

  In the illustrated daylighting apparatus, the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 'to 10' are arranged so that the longitudinal direction x thereof substantially coincides with the northeast direction in order to further improve the daylighting performance in the morning and evening. It is arranged.

  At this time, the longitudinal direction x is deviated from the north direction and the east direction by about 45 degrees. Further, the morning sunlight reflecting plates 4 to 8 are higher on the north side on the northwest side, and the evening sunlight reflecting plates 4 'to 10' are higher on the south side on the southeast side.

  Although the orientation relationship of the longitudinal direction x shown in the drawing is an example suitable for daylighting performance in the morning and evening, the orientation of the daylighting device of the present invention is not limited to this, and the area where the daylighting device is used and the direction of the building used It can be arbitrarily changed according to the above.

  The outer shapes of the morning sunlight reflecting plates 4 to 8 and 10 and the evening sunlight reflecting plates 4 'to 8' and 10 'in each of the sets shown in Figs. 1 to 6 and 8 are the same. That is, these morning sunlight reflecting plates and evening sunlight reflecting plates all have the same flat plate shape.

  The morning sunlight reflecting plate 4 and the evening sunlight reflecting plate 4 ′ of FIGS. 1 and 2 have a right triangle shape, and the morning sunlight reflecting plate 10 and the evening sunlight reflecting plate 10 ′ of FIG. 7 are rectangular or square. It consists of a shape.

The basic features of the illustrated daylighting apparatus according to the present invention are as follows:
(21) The morning sunlight reflecting plates 4 to 10 having various shapes shown in FIGS. 2 to 8 are respectively arranged in a standing state on the northwest side peripheral edge portion 2a of the building lighting section 2, and the evening sunlight reflecting plate. 4 ′ to 10 ′ are respectively arranged on the southeast side peripheral edge 2d of the building daylighting section 2 in a standing state substantially parallel to the morning sunlight reflecting plate (in the case of FIGS.
(22) The height of each of the pair of morning sunlight reflecting plates 4 to 10 and evening sunlight reflecting plates 4 ′ to 10 ′ disposed varies in the opposite relationship along the longitudinal direction x.
That is.

Looking at the relationship of the height change in (22) above individually for the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 'to 10', respectively, along the longitudinal direction x,
(31) The right-angled triangular morning sunlight reflector 4 in FIGS. 1 and 2 increases in a straight line, and the evening sunlight reflector 4 ′ decreases in a straight line.
(32) The morning sunlight reflector 5 in FIG. 3 increases in a quadratic function curve, and the evening sunlight reflector 5 ′ decreases in a quadratic function curve,
(33) The morning sunlight reflector 6 in FIG. 4 increases in a curve “y = arctan (x)”, and the evening sunlight reflector 6 ′ decreases in a curve “y = arctan (x)”. And
(34) The morning sunlight reflecting plate 7 in FIG. 5 increases in a plurality of linear lines of “low horizontal line segment−uphill inclined line segment−high horizontal line segment”, and the evening sunlight reflecting plate 7 ′ is “high horizontal line segment−downhill”. Decrease in multiple lines of "Slope line-Low horizontal line"
(35) The morning sunlight reflecting plate 8 in FIG. 6 increases linearly by a plurality of “low horizontal line segment−high horizontal line segment”, and the evening sunlight reflecting plate 8 ′ has a plurality of “high horizontal line segment−low horizontal line segment”. Decreases linearly,
(36) The morning sunlight reflecting plate 9 of FIG. 7 is “decreasing → increasing” in a plurality of straight lines of “downhill line segment−uphill line segment”, and the evening sunlight reflector plate 9 ′ is “uphill line segment” -"Increase → Decrease" in multiple straight lines
(37) The morning sunlight reflector 10 in FIG. 8 maintains the height of the horizontal line in the front half of the building lighting section 2 in the x direction (right side in the figure), and the evening sunlight reflector 10 ' Hold the height of the horizontal line in the rear half of the x direction (left side in the figure),
It is set to the height of the shape.

  It should be noted that the ascending line segment and the descending line segment of the morning sunlight reflecting plate 9 and the evening sunlight reflecting plate 9 ′ in (36) have the same angle.

The morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 'to 10'
(41) The low part of the evening sunlight reflectors 4 ′ to 9 ′ and the high part of the morning sunlight reflectors 4 to 9 face each other,
(42) The low part of the morning sunlight reflecting plates 4 to 9 and the high part of the evening sunlight reflecting plates 4 'to 9' face each other,
(43) The evening sunlight reflecting plate 10 ′ (morning sunlight reflecting plate 10) is not installed on the opposite portion of the morning sunlight reflecting plate 10 (evening sunlight reflecting plate 10 ′).
It is arranged in a manner.

  As described above, the shapes of the pair of morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ in FIGS. 1 to 6 and FIG. The entire device is of excellent design.

  Here, the inner reflective surfaces 4a to 10a of the specular specification of the morning sunlight reflecting plates 4 to 10 and the inner reflective surfaces 4a 'to 10a' of the specular spec of the evening sunlight reflecting plates 4 'to 10' are made of glass, stainless steel, aluminum. , Resin or the like.

  The inner reflection surfaces 4a to 10a and the inner reflection surfaces 4a ′ to 10a ′ may be diffuse reflection surfaces, and in that case, the inner reflection surfaces 4a to 10a are formed by gray coating or resin film application.

  The outer surface portions of the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ may have arbitrary specifications such as a light absorption surface, a diffuse reflection surface, and a mirror surface, respectively.

The morning sunlight path L1 when the morning sunlight is reflected and incident on the building daylighting section 2 in each of the daylighting devices of FIGS.
(51) Evening sunlight reflectors from above the lower part of the evening sunlight reflectors 4 ′ to 10 ′ (in the case of FIG. 8, the part where the evening sunlight reflector 10 ′ of the southeast peripheral edge 2d is not installed) Proceed to the inner reflective surfaces 4a-10a with 4-10 mirror surface specifications,
(52) The light reflected by the inner reflection surface enters the building daylighting unit 2;
It has a shape (see FIG. 1).

In addition, the evening sunlight path L2 when the evening sunlight is reflected and incident on the building daylighting section 2 in each of the daylighting apparatuses of FIGS.
(61) Evening sunlight reflectors 4 'to above the lower part of the morning sunlight reflectors 4 to 10 (in the case of FIG. 8, the part where the morning sunlight reflector 10 is not installed on the northwest side peripheral edge 2a) Proceed to the inner reflective surface 4a'-10a 'of the specular specification of 10',
(62) The light reflected by the inner reflection surface enters the building daylighting unit 2,
It has a shape (see FIG. 1).

  In the present invention, the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ are arranged at the respective heights on the northwest side peripheral portion 2a and the southeast side peripheral portion 2d of the building daylighting portion 2 in this way. (In the case of FIG. 8, this includes the zero-height portion where the reflectors 10 and 10 'are not installed.) The shape changes in the reverse relation to the same longitudinal direction (the x direction in the drawing) of the reflector. By setting in parallel, the reflected light of the morning sunlight and evening sunlight from the reflecting plate is made to enter the building daylighting unit 2 in the same manner without being separated.

  The morning sunlight reflecting plates 4 to 10 on the northwest side peripheral edge 2a prevent the evening sunlight from traveling toward the southeast side peripheral edge 2d on the outer surface, and the inner reflection surfaces 4a to 10a give the morning sunlight to the morning sunlight. Reflective action is exhibited.

  On the other hand, the evening sunlight reflecting plates 4 ′ to 10 ′ on the southeast peripheral edge 2d prevent the morning sunlight from traveling toward the northwest peripheral edge 2a on the outer surface, and the inner reflecting surfaces 4a ′ to 10a ′. In the evening, it is reflecting sunlight.

That is, the building daylighting unit 2 in FIGS.
According to the height situation of said (31)-(37) regarding each of morning sunlight reflecting plates 4-10 and evening sunlight reflecting plates 4'-10 ',
(71) Evening sunlight reflecting plates 4 ′ to 10 ′ without being blocked by the morning sunlight reflecting plates 4 to 10a are reflected from the morning sunlight reflecting surfaces 4a to 10a.
(72) Evening sunlight reflecting plates 4 to 10 enter the evening reflecting surfaces 4a 'to 10a' of the evening sunlight reflecting plates 4 'to 10' without being blocked by the morning sunlight reflecting plates 4 to 10. .

  When attaching the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ to the columns 2b, 2c, 2e, and 2f having the corresponding heights, various fixings such as screwing, riveting, and adhesion are performed. Means are used as appropriate.

Of course, the present invention is not limited to the above embodiments, for example,
(81) Instead of the flat plate-shaped morning sunlight reflecting plates 4 to 10 and evening sunlight reflecting plates 4 ′ to 10 ′, a curved plate shape, for example, a curved plate shape curved outward in the longitudinal direction or the height direction Use
(82) The morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ are arranged to be shifted from the parallel state.
(83) The morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ are arranged to be inclined inward (side of the building daylighting unit 2) or the opposite side,
(84) The height of each pair of morning sunlight reflecting plates 4 to 10 and evening sunlight reflecting plates 4 'to 10' is shown within a range where "the changes in height in the longitudinal direction are opposite to each other" Set to a shape other than
(85) The longitudinal direction of the building daylighting unit 2 is set to a predetermined range (not illustrated) in which the reflected light from the morning sunlight reflecting plates 4 to 10 and the evening sunlight reflecting plates 4 ′ to 10 ′ can enter the building daylighting unit. ) In any direction, eg north-south direction,
You may do it.

1: Building roof 2: Building lighting part 2a: Northwest peripheral edge 2b: High strut 2c: Low strut 2d: Southeast peripheral edge 2e: High strut 2f: Low strut 3: Duct for light propagation

4 to 10: Flat morning sunlight reflecting plates 4a to 10a: Specular inner reflecting surfaces 4 'to 10': Flat evening sunlight reflecting plates 4a 'to 10a': Inner reflecting surfaces L1: Morning sunlight Path L2: Evening sunlight path x: Longitudinal direction

Claims (5)

In the daylighting device equipped with a light reflector for improving the daylighting performance in the time zone where the solar altitude in the morning and evening is low in the building daylighting part opened upward,
The light reflector is
The morning sunlight reflecting plate disposed on one of the opposed peripheral portions of the building daylighting unit, and the evening sunlight reflecting plate disposed on the other of the opposed peripheral portions,
The morning sunlight reflector and the evening sunlight reflector are
Each has an inner reflective surface,
The change in height in the longitudinal direction after the arrangement to the building daylighting unit is set in an opposite relationship to each other,
In the building lighting section,
Reflected light of morning sunlight that has entered the inner reflective surface of the morning sunlight reflector without being blocked by the evening sunlight reflector,
Reflected light of evening sunlight that has advanced to the inner reflective surface of the evening sunlight reflector without being blocked by the morning sunlight reflector,
A daylighting apparatus characterized by that. The morning sunlight
Passing over the lower part of the evening solar reflector and proceeding to the inner reflective surface of the morning solar reflector,
The evening sunlight is
Passing over the lower part of the morning solar reflector and proceeding to the inner reflective surface of the evening solar reflector,
The daylighting apparatus according to claim 1. The morning sunlight reflector and the evening sunlight reflector are
It is a reflector of the same flat plate arranged in an opposing state,
The daylighting apparatus according to claim 1 or 2, wherein The morning sunlight reflector and the evening sunlight reflector are
It is arranged in a standing state on the opposite peripheral edge of the building lighting part,
The daylighting device according to any one of claims 1 to 3. The morning sunlight reflector and the evening sunlight reflector are
Each has a right triangle shape.
The daylighting device according to any one of claims 1 to 4, wherein:

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