JP2012064368A - Daylighting device and daylighting method to indoor space region - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain deepening of the region or further widening of the region of irradiation object portion in a daylighting device to an indoor space region in which a plurality of light reflection fins are installed.SOLUTION: The daylighting device is provided with a plurality of light reflection fins 11 installed at a light passage section 2a in which the intervals of light-emitting side openings (respective spacing between light-emitting side end parts 12b-15b) are larger than the intervals of neighboring light incident side openings (respective spacing between light incident side end parts 12a-15a) and which are installed so that the center portion in lateral direction is formed in convex shape or in concave shape to the side of the indoor space region 1, when the whole of the respective light-emitting side end parts 12b-15b is seen. As shown in the figure of the concave shape, the irradiation object portion is made deep and, on the contrary, in the form of the convex shape, the irradiation object portion is made further widened.

Description

  When taking natural light or the like into an indoor space from a light passage for taking in light, which is set at an exit of an optical duct, an entrance of an optical duct, an intermediate part of an optical duct, a roof window, etc. The present invention relates to a daylighting apparatus and a daylighting method that are intended to achieve irradiation or to achieve brighter illumination over a wider area.

  In particular, natural light or illumination light is output in a form that is brightly illuminated deeper into the indoor space area, or is illuminated brighter in a wider area in the horizontal direction of the indoor space area, and more uniformly over the wide area. A lighting device and a lighting method for outputting in the form.

  In the present specification, the horizontal direction substantially orthogonal to the longitudinal direction of the plurality of plate-like light reflecting fins disposed in the light passage portion for taking in light in such a manner that the respective longitudinal directions are substantially the same direction is referred to as “ "Horizontal".

  In addition, the term “natural light” is used to include artificial illumination light, and the term “indoor space region” is used to include a passage portion downstream of the light reflecting fin arrangement portion of the light duct.

  The present applicant has already proposed a daylighting apparatus in which the irradiation range is expanded in the lateral direction of the indoor space area when natural light is taken into the indoor space area (see Patent Document 1 below).

  In this daylighting apparatus, a plurality of light reflecting fins (light reflecting blades) are arranged such that the interval between the light exit side openings is larger than the interval between the adjacent light incident side openings.

  The natural light incident on the plurality of light reflecting fins propagates from the light exit side opening to the indoor space area in a form spreading and diffusing in the indoor lateral direction.

International Publication No. WO2009-025089

  In the case of this proposed daylighting device, a plurality of light reflecting fins are arranged in the form of a front opening in which the adjacent light exit side openings are wider than the light entrance side openings, thereby widening the indoor space area. This ensures the convenience of being exposed to natural light.

  Further, in the present invention, the natural light in the indoor space is also focused on the lateral positional relationship of the entire light emitting side end of each of the light reflecting fins arranged in the form of a front opening in the light passing part for light capturing. An object is to achieve a deeper area or a wider range of the irradiation target portion.

  Another object of the present invention is to reduce the cost and simplify the construction work for the entire daylighting apparatus by using a plurality of light reflecting fins arranged in the same shape.

  In addition, the vertical position of the light incident side end of the plurality of light reflecting fins is set so as to increase in the horizontal direction from the light reflecting fin on the front side of the incident light, thereby increasing the amount of light collected. It aims to plan.

  In addition, when the entire light emitting side end of the light reflecting fins arranged in a plurality is shaped so that the middle part in the lateral direction is convex toward the indoor space, the light incident on the light reflecting fins An object of the present invention is to set the pitch between the side end portions so as to be narrow at the middle portion in the horizontal direction and wide at the outer portion thereof, thereby uniformizing the amount of light reaching the floor portion to be irradiated.

The present invention solves the above problems as follows.
(1) In a lighting device for an indoor space area (for example, an indoor space area 1 described later),
A light passage portion for capturing light (for example, a light passage portion 2a described later);
In the light passage portion, the interval between the light exit side openings is larger than the interval between the adjacent light entrance side openings, and when the entire end portion of each light exit side is viewed, the middle portion in the lateral direction is A plurality of light reflecting fins (for example, light reflecting fins 11, 21, 31, 41, 51, 61, 71, 73, 75, 81, described later) arranged in a convex or concave shape on the indoor space side. 83, 85, 91, 101, 111, 121),
Is provided.
(2) In (1) above,
The plurality of light reflecting fins are:
Each is a plate-like member having the same shape (for example, light reflecting fins 32 to 35, 52 to 55, and 62 to 65 described later).
(3) In (1) above,
The plurality of light reflecting fins are:
A member (in the light passing portion) arranged such that the vertical position of each light incident side end portion becomes higher in order from the light reflecting fin on the front side of the incident light with respect to the lateral direction of the entire light reflecting fin ( For example, light reflection fins 92 to 99 and 112 to 119) described later.
(4) In (1) above,
The plurality of light reflecting fins are:
The middle portion in the horizontal direction is convex toward the indoor space region side, and the pitch between the light incident side end portions is narrow at the middle portion in the horizontal direction and wide at the outer portion.
(5) In the lighting method for indoor space,
A plurality of light reflecting fins are provided in the light passage portion for capturing light.
When the interval between the light emitting side openings is larger than the interval between the light incident side openings adjacent to the light reflecting fins, and the entire light emitting side end of each of the light reflecting fins is viewed in the lateral direction. By arranging the middle part in a shape that is convex or concave on the indoor space side,
Incident light to the light passage part is propagated to the indoor space while being reflected by the action of the light reflecting fins adjacent to each other.

  The present invention is directed to a daylighting device and a daylighting method for an indoor space having the above-described configuration.

The present invention is based on the above problem solving means.
(11) In the indoor space, natural light or other areas subject to irradiation, or more extensive,
(12) To reduce costs and simplify construction work for the entire daylighting device,
(13) Increase the amount of light collected into the indoor space.
(14) To equalize the amount of light that reaches the floor of the irradiation target.
be able to.

It is explanatory drawing which shows the lighting device (the 1) of the back area bright irradiation type (concave shape in the indoor space area side) which consists of several light reflection fins of the rectangular flat plate shape from which width differs, (a) is light path omission A lighting device is shown, and (b) shows a light path and a lighting device. It is explanatory drawing which shows the lighting device (the 1) of the wide bright illumination type (convex shape to the indoor space area side) which consists of a plurality of light reflection fins of the rectangular flat plate shape with different widths, (a) is the light path omitted A lighting device is shown, and (b) shows a light path and a lighting device. It is explanatory drawing which shows the daylighting device which each consists of a plurality of light reflection fins of rectangular flat plate shape of approximately the same size, (a) shows the back area bright illumination type (concave shape on the indoor space side), (b) Indicates a wide bright illumination type (convex shape on the indoor space side). It is explanatory drawing which shows the lighting apparatus of the back area bright irradiation type (concave shape in an indoor space area side) which each consists of several light reflection fins of the short C-shaped flat plate shape of substantially the same size. FIG. 5 is an explanatory view showing a daylighting device of a wide bright illumination type (convex shape on the indoor space side) having a shape corresponding to the plurality of light reflecting fins of FIG. 4. It is explanatory drawing which shows the lighting device of the back area bright irradiation type (concave shape in the indoor space area side) which consists of a plurality of light reflection fins of a bent plate shape and a curved plate shape having a rectangular outline. The case of a light reflecting fin bent inward is shown, (b) shows the case of a light reflecting fin bent downward, and (c) shows the case of a light reflecting fin bent downward inward. It is explanatory drawing which shows the daylighting device of the wide bright illumination type (convex shape to an indoor space area side) shape corresponding to the some light reflection fin of FIG. It is explanatory drawing which shows the lighting device (the 1) of the back region bright irradiation type (concave shape in the indoor space area side) which consists of several rectangular flat light reflection fins from which width differs, (a) is each light reflection fin Shows the case where the vertical position of the light incident side end is set so that the near side of the incident light is low and the deep side is high, and (b) shows the vertical position relationship of the light incident side end is set opposite to (a) Shows the case. It is explanatory drawing which shows the daylighting apparatus (the 2) of the wide bright illumination type (convex shape to an indoor space area side) of the shape corresponding to the several light reflection fin of FIG. 1 and 2 show the installation angle of each light reflecting fin and the distance between adjacent light incident side ends, (a) corresponds to the daylighting device of FIG. 1, (b) shows the daylighting of FIG. It corresponds to the device. The spreading | diffusion state of the arrival light to the floor surface in the lighting apparatus of FIG. 2, FIG.10 (b) is shown.

  The form for implementing this invention is demonstrated using FIGS. 1-11.

  As described above, according to the present invention, the light duct exit, the light duct entrance, the middle of the light duct passage, the light passage portion for taking in the light set in the roof window, and the like are targeted. It is assumed that a louver composed of a plurality of light reflecting fins is provided at the light passage portion as the light duct exit.

  The light passage portion for taking in light in the middle of the light duct passage is a cross-sectional portion (intersecting the longitudinal direction) of the light duct passage provided with a louver for collecting or diffusing natural light incident thereon. That is.

About components other than the light reflection fin in FIGS. 1-11,
1 is an indoor space area that is exposed to natural light,
1a is a ceiling constituting the indoor space area,
1b is an opening for taking in light formed in the ceiling,
2 is a horizontal light duct mounted on the ceiling 1a,
2a is a light passage portion for taking in light (one of the outlets of the light duct) formed in an opening manner in a predetermined portion of the light duct corresponding to the opening portion 1b.
3 is a pair of angles (mounting brackets) fixed to the ceiling near the opening 1b,
4 is a pair of rectangular holding substrates for fixing the light reflecting fins attached to the angle 3 (see FIGS. 1, 6, 8, and 10),
5 is a pair of eaves cross-section holding substrates for fixing light reflecting fins attached to the angle 3 (see 1: FIG. 2, FIG. 3, FIG. 7, FIG. 9, FIG. 10, FIG. 11),
6 is a pair of cross-sectional type holding substrates for fixing light reflecting fins attached to angle 3 (Part 2: see FIGS. 3 and 4),
7 is a pair of hook-shaped holding substrates for fixing light reflecting fins attached to angle 3 (Part 3: see FIG. 5),
8 is a floor surface exposed to natural light,
Respectively.

And the basic characteristics of each daylighting device consisting of a plurality of light reflecting fins in FIGS.
(11) For each light reflecting fin as a whole, it is set in the form of a front opening in which the interval on the light exit side opening is larger than the interval between the light incident side openings on each adjacent side,
(12) As a whole, each of the light reflecting fins has a horizontal imaginary continuous line at each end of the light emitting side that is concave toward the indoor space area [FIG. 1, FIG. 3 (a), FIG. 4, FIG. 6, FIG. 10 (a)] or a convex shape (FIG. 2, FIG. 3 (b), FIG. 5, FIG. 7, FIG. 9, FIG. 10 (b), FIG. 11).
That is.

By having this basic feature,
(21) In the daylighting device in which the light emitting side end of each light reflecting fin is concave on the indoor space side, it achieves bright illumination in the inner space area,
(22) In the daylighting device in which the light emission side end portion of each light reflecting fin is convex toward the indoor space area side, it is possible to realize further wide-area bright illumination in the indoor space area lateral direction,
be able to.

  Here, (21) it is possible to realize the bright illumination of the back area to the indoor space area, as illustrated in FIG. 1 (b), the reflected light from the outer light reflecting fins is in the lateral direction of the plurality of light reflecting fins. This is because the light advances from the center and the reflected light from the entire light reflecting fins gathers.

  In addition, (22) the wide and clear illumination to the indoor space can be realized because the reflected light from the outer light reflecting fins is laterally outward of the plurality of light reflecting fins as illustrated in FIG. 2 (b). This is because the reflected light from the entire light reflecting fin diffuses.

1 and 10 (a),
11 is a pair of units and has different vertical lengths (widths) in the figure, and a plurality of light reflecting fins (= 12 to 15) screwed to the holding substrate 4 respectively.
12 is a rectangular flat plate disposed at the outermost part and a pair of longest width light reflecting fins;
13 is a rectangular flat plate disposed at the innermost part of the center and a pair of shortest width light reflecting fins;
14 and 15 are disposed between the outermost longest light reflecting fin 12 and the innermost innermost shortest light reflecting fin 13 in order of increasing width from the light reflecting fin 12, respectively. A rectangular plate-shaped intermediate light reflecting fin,
12a to 15a are light incident side end portions of the respective light reflecting fins 12 to 15,
12b-15b is the light emission side edge part of each light reflection fin 12-15,
16, each light incident side end 12a-15a is provided in the light passing portion 2a in a shape where the light emitting side ends 12b-15b are concave on the indoor space side. Area irradiating type louver (lighting device),
S1 is a cross section in the orthogonal direction of the light beam such as natural light in the direction of the arrow reaching the incident range from the light incident side end 12a to the light incident side end 15a,
Respectively.
S1 corresponds to an incident amount per unit time such as natural light.

In the daylighting apparatus of FIGS. 2, 10 (b) and 11,
Reference numeral 21 denotes a pair of units that have different vertical lengths (widths), and are each a plurality of light reflecting fins (= 22 to 25) screwed to the holding substrate 5.
22 is a rectangular flat plate disposed in the outermost part and a pair of shortest width light reflecting fins;
23 A pair of longest-width light reflecting fins in the shape of a rectangular flat plate disposed in the center innermost part,
Reference numerals 24 and 25 are arranged between the outermost shortest width light reflecting fin 22 and the innermost longest width light reflecting fin 23 in order of decreasing width from the light reflecting fin 22, respectively. A rectangular plate-shaped intermediate light reflecting fin,
22a to 25a are light incident side end portions of the respective light reflecting fins 22 to 25;
22b to 25b are light emission side end portions of the respective light reflecting fins 22 to 25,
26, the light incident side end portions 22a to 25a are provided at the light passage portion 2a so that the light emitting side end portions 22b to 25b are convex toward the indoor space area. Wide-area bright irradiation type louver (lighting device),
S2 is the same orthogonal cross section as S1 in FIG.
Respectively.

In the daylighting device of FIG.
31 is a plurality of light reflecting fins (= 32 to 35) each having the same shape and screwed to the holding substrate 6;
32 is a rectangular flat plate disposed at the outermost and lowermost part, and a pair of lowermost light reflecting fins,
33 is a rectangular flat plate disposed at the center innermost and uppermost part, and a pair of uppermost light reflecting fins,
34 and 35 are disposed between the outermost lowermost light reflecting fin 32 and the innermost uppermost light reflecting fin 33 at positions on the upper side of the figure in order from the lowermost light reflecting fin 32. A rectangular flat plate-shaped intermediate light reflecting fin consisting of a pair of units,
32a to 35a are light incident side end portions of the respective light reflecting fins 32 to 35;
32b to 35b are light emitting side end portions of the light reflecting fins 32 to 35, respectively.
Reference numeral 36 denotes a back area bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light emission side end portions 32b to 35b are concave on the indoor space area 1 side.
Respectively.

In the daylighting device of FIG.
41 is a plurality of light reflecting fins (= 42 to 45) each having the same shape and screwed to the holding substrate 5;
42 is a rectangular flat plate disposed on the outermost and uppermost part, and a pair of uppermost light reflecting fins,
43 is a rectangular flat plate arranged at the center innermost and lowermost part, and a pair of bottom light reflecting fins,
44 and 45 are disposed between the outermost uppermost light reflecting fin 42 and the innermost lowermost light reflecting fin 43 at the lower position in the drawing in order from the uppermost light reflecting fin 42. A rectangular flat plate-shaped intermediate light reflecting fin consisting of a pair of units,
42a to 45a are light incident side end portions of the light reflecting fins 42 to 45,
42b-45b are the light emission side edge part of each light reflection fin 42-45,
Reference numeral 46 denotes a wide-area bright irradiation type louver (lighting device) provided in the light passage portion 2a in such a manner that each light emission side end portion 42b to 45b is convex toward the indoor space area 1 side.
Respectively.

In the daylighting apparatus of FIG.
51 are a plurality of light reflecting fins (= 52 to 56), each having the same shape and screwed to the holding substrate 6;
52 is a short C-shaped flat plate disposed at the outermost and lowermost part, and a pair of lowermost light reflecting fins,
53 is a short C-shaped flat plate arranged at the center innermost and uppermost part, and a pair of uppermost light reflecting fins,
54 to 56 are arranged between the outermost light reflecting fin 52 and the uppermost light reflecting fin 53 at the center innermost in order from the lower light reflecting fin 52 in the upper side of the figure, respectively. A short C-shaped flat intermediate light reflecting fin consisting of a pair of units;
52a to 56a are light incident side end portions of the light reflecting fins 52 to 56, respectively.
52b-56b are light emission side end portions of the light reflecting fins 52-56,
57 is a back area bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that each light emission side end portion 52b to 56b is concave on the indoor space area 1 side.
Respectively.

In the daylighting apparatus of FIG.
61, a plurality of light reflecting fins (= 62 to 66) each having the same shape and screwed to the holding substrate 7;
62 is a short C-shaped flat plate disposed at the outermost and uppermost part, and a pair of uppermost light reflecting fins,
63 is a short C-shaped flat plate disposed at the center innermost and lowermost part, and a pair of bottom light reflecting fins,
Reference numerals 64 to 66 are disposed between the outermost uppermost light reflecting fin 62 and the innermost innermost light reflecting fin 63 at positions on the lower side of the figure in order from the uppermost light reflecting fin 62. A flat-plate intermediate light reflecting fin consisting of a pair of units,
62a to 66a are light incident side end portions of the respective light reflecting fins 62 to 66;
62b to 66b are light emitting side end portions of the respective light reflecting fins 62 to 66,
Reference numeral 67 denotes a wide-area bright irradiation type louver (lighting device) provided in the light passage portion 2a in such a manner that the light emission side end portions 62b to 66b are convex toward the indoor space area 1 side.
Respectively.

In the daylighting apparatus of FIG.
Reference numeral 71 denotes a light reflecting fin formed of a bent plate having a shape in which each of the plurality of light reflecting fins 11 in FIG. 1 is bent inward, and is screwed to the holding substrate 4.
Reference numeral 72 denotes a back area bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light emitting side end of each light reflecting fin 71 is concave toward the indoor space 1 side.
73 is a light reflecting fin formed of a bent plate having a shape in which each of the plurality of light reflecting fins 11 in FIG. 1 is bent outward, and is screwed to the holding substrate 4.
Reference numeral 74 denotes a back area bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light exit side end portion of each light reflecting fin 73 is concave toward the indoor space 1 side.
75 is a light reflecting fin formed of a curved plate having a shape in which the lower side of each of the plurality of light reflecting fins 11 in FIG.
Reference numeral 76 denotes a back area bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light exit side end of each light reflecting fin 75 is concave toward the indoor space 1 side.
Respectively.

In the daylighting apparatus of FIG.
81 is a light reflecting fin formed of a bent plate having a shape in which each of the plurality of light reflecting fins 21 in FIG. 2 is bent inward, and is screwed to the holding substrate 5, respectively.
82 is a wide-bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light emission side end portion of each light reflecting fin 81 is convex toward the indoor space 1 side,
83 is a light reflecting fin formed of a bent plate having a shape in which each of the plurality of light reflecting fins 21 in FIG. 2 is bent outward, and is screwed to the holding substrate 5, respectively.
84 is a wide bright illumination type louver (lighting device) provided on the light passage portion 2a in such a manner that the light emission side end portion of each light reflecting fin 83 is convex toward the indoor space 1 side.
85 is a light reflecting fin formed of a curved plate having a shape in which each of the plurality of light reflecting fins 21 in FIG. 2 is curved inward, and is screwed to the holding substrate 5.
86 is a wide bright illumination type louver (lighting device) provided in the light passage portion 2a in such a manner that the light exit side end of each light reflecting fin 85 is convex toward the indoor space area 1 side.
Respectively.

In the daylighting device of FIG.
Reference numeral 91 denotes a plurality of light reflecting fins (= 92 to 99) each having a different vertical length (width) in the drawing and screwed to the holding substrate 4.
92 is a foremost light reflecting fin in the shape of a rectangular flat plate disposed in the foremost part of the incident light of the arrow;
93 is a rectangular flat plate-like innermost light reflecting fin disposed at the innermost part of the incident light of the arrow,
94 to 99 are intermediate light reflecting fins disposed between the foremost light reflecting fin 92 and the deepest light reflecting fin 93;
92a to 99a are light incident side end portions of the respective light reflecting fins 92 to 99,
92b to 99b are light emitting side end portions of the respective light reflecting fins 92 to 99,
100, the vertical positions of the light incident side end portions 92a to 99a are sequentially increased from the foremost light reflecting fin 92 toward the innermost light reflecting fin 93, and the light emitting side end portions 92b to 99b are in an indoor space area. A deep area illuminating type louver (lighting device) provided in the light passage portion 2a in a concave shape on the side,
S3 is an orthogonal cross section of the light beam such as natural light in the direction of the arrow reaching the incident range from the light incident side end portion 92a to the light incident side end portion 99a,
Respectively.
S3 corresponds to the amount of incident light per unit time such as natural light.

In the daylighting device of FIG.
Reference numeral 101 denotes a plurality of light reflecting fins (= 102 to 109) each screwed to the holding substrate 4 in such a manner that the vertical position of the light incident side end is opposite to that in FIG.
Reference numeral 102 denotes a foremost light reflecting fin having a rectangular flat plate shape disposed in the foremost part of the incident light of the arrow;
103 is a rectangular flat plate-shaped innermost light reflecting fin disposed at the innermost part of the incident light of the arrow,
104 to 109 are intermediate light reflecting fins disposed between the foremost light reflecting fin 102 and the innermost light reflecting fin 103;
102a to 109a are light incident side end portions of the light reflecting fins 102 to 109,
102b to 109b are light emitting side end portions of the light reflecting fins 102 to 109,
110, the vertical positions of the light incident side end portions 102a to 109a are sequentially lowered from the foremost light reflecting fin 102 toward the innermost light reflecting fin 103, and the light emitting side end portions 102b to 109b are located on the indoor space side. Deep area illumination type louver (lighting device) provided in the light passing portion 2a in a concave shape,
S4 indicates a cross section in the orthogonal direction of a light beam such as natural light in the direction of an arrow reaching the incident range from the light incident side end portion 102a to the light incident side end portion 109a.
S4 corresponds to an incident amount per unit time such as natural light.

In the daylighting device of FIG.
111 is different in length (width) in the vertical direction in the figure, and each includes a plurality of light reflecting fins (= 112 to 119) screwed to the holding substrate 5.
112 is a foremost light reflecting fin having a rectangular flat plate shape disposed in the foremost part of the incident light of the arrow;
113 is a rectangular flat plate-shaped innermost light reflection fin disposed at the innermost part of the arrow incident light,
Reference numerals 114 to 119 denote intermediate light reflecting fins disposed between the foremost light reflecting fin 112 and the innermost light reflecting fin 113, respectively.
112a to 119a are light incident side end portions of the respective light reflecting fins 112 to 119;
112b to 119b are light emitting side end portions of the respective light reflecting fins 112 to 119;
In 120, the vertical positions of the light incident side end portions 112a to 119a are sequentially increased from the foremost light reflecting fin 112 toward the innermost light reflecting fin 113, and the light emitting side end portions 112b to 119b are on the indoor space side. Wide light irradiation type louver (lighting device) provided in the light passing portion 2a in a convex shape,
S5 is the same orthogonal cross section as S3 in FIG.
Respectively.

In the daylighting device of FIG.
Reference numeral 121 denotes a plurality of light reflecting fins (= 122 to 129) each screwed to the holding substrate 5 in such a manner that the vertical position of the light incident side end is opposite to that in FIG. 9A.
122 is a foremost light reflecting fin in the shape of a rectangular flat plate disposed in the foremost part of the incident light of the arrow;
123 is a rectangular flat plate-like innermost light reflecting fin disposed at the innermost part of the arrow incident light,
124 to 129 are intermediate light reflecting fins disposed between the foremost light reflecting fin 122 and the deepest light reflecting fin 123;
122a to 129a are light incident side end portions of the respective light reflecting fins 122 to 129;
122b to 129b are light emitting side end portions of the respective light reflecting fins 122 to 129,
130, the vertical positions of the light incident side end portions 122a to 129a are sequentially lowered from the foremost light reflecting fin 122 toward the innermost light reflecting fin 103, and the light emitting side end portions 122b to 129b are located on the indoor space side. Wide light irradiation type louver (lighting device) provided in the light passing portion 2a in a convex shape,
S6 is the same orthogonal cross section as S4 in FIG.
Respectively.

  Here, each light reflecting fin shown in FIGS. 1 to 11 has a shape perpendicular to the paper surface, and both surfaces are mirror-like.

  Accordingly, natural light or the like incident on each daylighting device in FIGS. 1 to 11 is repeatedly reflected between the opposing surfaces of adjacent light reflecting fins and then emitted to the indoor space [FIG. ), See Fig. 2 (b)].

In the daylighting devices 100 and 120 shown in FIGS. 8A and 9A, the daylight such as natural light captured between the foremost light reflecting fins 92 and 112 and the innermost light reflecting fins 93 and 113 of the incident light of the arrow is collected. The amount is greater than that in the daylighting device of FIGS.
That is, “size of S3, S5> size of S1, S2”.

In contrast, in the daylighting apparatuses 110 and 130 shown in FIGS. 8B and 9B, the incident light is captured between the foremost light reflecting fins 102 and 122 and the innermost light reflecting fins 103 and 123. The amount of collected natural light or the like is less than that of the daylighting apparatus shown in FIGS.
That is, “size of S4 and S6 <size of S1 and S2”.

  Here, when the daylighting devices 100 and 120 of FIGS. 8 (a) and 9 (a) are installed on the roof window in such a way that the arrow incident light becomes the east incident light, the amount of natural light incident on the indoor space is in the morning. More and less in the evening.

  In addition, when the daylighting devices 100 and 120 of FIGS. 8B and 9B are installed on the roof window in such a way that the arrow incident light becomes the east incident light, the amount of natural light incident on the indoor space is in the morning. Less and more in the evening.

As shown in FIG. 10, the positions of the light incident side end portions of the light reflecting fins 11 (12 to 15) in FIG. 1 and the reflecting fins 21 (22 to 25) in FIG.
(31) The distance between the shortest light reflecting fins 13 and 13 and the distance between the longest light reflecting fins 23 and 23 are both set to “20 mm”.
(32) The distance between the shortest light reflecting fin 13 and the intermediate light reflecting fin 15 and the distance between the longest light reflecting fin 23 and the intermediate light reflecting fin 25 are both set to “25 mm”.
(33) Both the interval between the intermediate light reflection fin 15 and the intermediate light reflection fin 14 and the interval between the intermediate light reflection fin 25 and the intermediate light reflection fin 24 are set to “30 mm”.
(34) Both the interval between the intermediate light reflection fin 14 and the longest light reflection fin 12 and the interval between the intermediate light reflection fin 24 and the shortest light reflection fin 22 are set to “35 mm”.

Further, the inclination of the light reflecting fins 11 (12 to 15) of FIG. 1 and the reflecting fins 21 (22 to 25) of FIG. 2 is the middle of the shortest light reflecting fins 13 and 13 and the middle of the longest light reflecting fins 23 and 23. For the virtual reference plane in the vertical direction shown in the figure,
(41) The shortest light reflecting fins 13 and 13 and the longest light reflecting fins 23 and 23 are “5 degrees” (= the angle between the shortest light reflecting fins and the angle between the longest light reflecting fins are “10 degrees”). Set to
(42) The intermediate light reflecting fins 15 and 25 are set to “10 degrees” (= “5 degrees” for the shortest light reflecting fin 13 and the longest light reflecting fin 23),
(43) The intermediate light reflecting fins 14 and 24 are set to “15 degrees” (= “5 degrees” for the intermediate light reflecting fins 15 and 25),
(44) The longest light reflecting fin 12 and the shortest light reflecting fin 22 are set to “20 degrees” (= “5 degrees” for the intermediate light reflecting fins 14 and 24).

  The numerical values of the position and inclination shown in FIG. 10 are the light reflecting fins 31, 41, 51, 61, 71, 73, 75, 81, 83, 85, 91, 101, 111, FIG. 121 also applies.

  As shown in FIG. 11, between the light incident side end portions 23 a and 23 a having a narrow pitch of 20 mm among the reflective fins 21 (22 to 25) convex to the indoor space area side of FIGS. 2 and 10 (b). A small amount of natural light entering the light gathers in a narrow area of the floor 8, and a large amount of natural light entering between the light incident side end portions 22 a and 24 a having a wide pitch of 35 mm, for example, diffuses to a wide area of the floor 8.

  Of course, the relationship between light collection and light diffusion on the floor surface 8 due to the narrow pitch of the light incident side end is secured between the plurality of light reflecting fins 21 (22 to 25).

  Therefore, the amount of natural light or the like that reaches the floor surface 8 from each reflection fin 21 (22 to 25) is more uniform in a predetermined floor surface range than in the case of each reflection fin that is composed of light-incidence-side end portions at equal pitches. It becomes.

  The uniformization of natural light reaching the floor surface is achieved by reflecting each of the reflective fins 41, 61, 81, 83, 85, which are convex on the indoor space side in FIG. 3 (b), FIG. 5, FIG. It is secured also in each of 111,121.

The mirror surface (both sides) of each light reflecting fin is
・ Made of aluminum mirror, stainless steel mirror, resin mirror with silver and aluminum vacuum metallized film treatment.

Of course, the present invention is not limited to the above embodiments, for example,
(51) Instead of the planar light reflecting fin, a light reflecting fin having a curved cross-sectional shape in the width direction is used (see FIG. 6 of International Publication No. 2009/025089).
(52) Use a light diffusing surface (a light diffusing surface such as a satin specification, an uneven specification, a white paint specification, etc.) as the reflecting surface of the light reflecting fin.
(53) Use various fixing means such as riveting and gluing when installing light reflecting fins.
You may do it.

[FIGS. 1 to 11]
1: Indoor space area 1a: Ceiling 1b: Opening portion 2 for taking in light: Optical duct 2a: Light passage portion for taking in light (one of outlets of optical duct)
3: A pair of angles 4: A pair of rectangular holding substrates (FIGS. 1, 6, 8, and 10)
5: A pair of scissors-shaped holding substrates (FIGS. 2, 3, 7, 9, 10, and 11)
6: A pair of scissors-shaped holding substrates (FIGS. 3 and 4)
7: A pair of scissors-shaped holding substrates (FIG. 5)
8: Floor surface

[Fig. 1 and Fig. 10 (a)]
11: A plurality of light reflecting fins (= 12 to 15)
12: A pair of longest width light reflecting fins 13: A pair of shortest width light reflecting fins 14, 15: Intermediate light reflecting fins 12a to 15a: Light incident side end portions 12b to 15b: Light emitting side end portions 16: Back region bright illumination Type louver (lighting device)
S1: Cross section in the orthogonal direction of the light beam (FIGS. 2, 10B, and 11)
21: A plurality of light reflecting fins (= 22 to 25)
22: A pair of shortest width light reflecting fins 23: A pair of longest width light reflecting fins 24, 25: Intermediate light reflecting fins 22a to 25a: Light incident side end portions 22b to 25b: Light emitting side end portions 26: Wide range bright illumination Type of louver (lighting device)
S2: Cross section in the orthogonal direction of the light beam [Fig. 3]
31: A plurality of light reflecting fins (= 32 to 35)
32: A pair of lowermost light reflecting fins 33: A pair of uppermost light reflecting fins 34, 35: Intermediate light reflecting fins 32a to 35a: Light incident side end portions 32b to 35b: Light emitting side end portions 36: Bright irradiation of the back region Type of louver (lighting device)
41: A plurality of light reflecting fins (= 42 to 45)
42: A pair of uppermost light reflecting fins 43: A pair of lowermost light reflecting fins 44, 45: Intermediate light reflecting fins 42a to 45a: Light incident side end portions 42b to 45b: Light emission side end portions 46: Wide range bright illumination type Louver (lighting device)
[FIGS. 4 and 5]
51: a plurality of light reflecting fins (= 52 to 56)
52: a pair of lowermost light reflecting fins 53: a pair of uppermost light reflecting fins 54 to 56: intermediate light reflecting fins 52a to 56a: light incident side end portions 52b to 56b: a light emitting side end portion 56: light irradiation on the back area Type of louver (lighting device)
61: A plurality of light reflecting fins (= 62 to 66)
62: A pair of uppermost light reflecting fins 63: A pair of lowermost light reflecting fins 64 to 66: Intermediate light reflecting fins 62a to 66a: Light incident side end portions 62b to 66b: Light emitting side end portions 67: Wide range bright illumination type Louver (lighting device)
[Fig. 6 and Fig. 7]
71, 73, 75, 81, 83, 85: Light reflecting fins 72, 74, 76: Back region bright illumination type louver (lighting device)
82, 84, 86: Wide irradiating type louver (lighting device)
[Fig. 8]
91: A plurality of light reflecting fins (= 92 to 99)
101: A plurality of light reflecting fins (= 102 to 109)
92, 102: foremost light reflecting fins 93, 103: innermost light reflecting fins 94-99, 104-109: intermediate light reflecting fins 92a-99a, 102a-109a: light incident side end portions 92b-99b, 102b-109b : Light emitting side ends 100, 110: Back area bright irradiation type louver (lighting device)
S3, S4: Cross section in the orthogonal direction of the light beam [Fig. 9]
111: A plurality of light reflecting fins (= 112 to 119)
121: a plurality of light reflecting fins (= 122 to 129)
112, 122: foremost light reflecting fins 113, 123: innermost light reflecting fins 114-119, 124-129: intermediate light reflecting fins 112a-119a, 122a-129a: light incident side ends 112b-119b, 122b-129b : Light emitting side ends 120 and 130: Wide-area bright irradiation type louver (lighting device)
S5, S6: Cross section in the orthogonal direction of the light beam

Claims (5)

A light passage for taking in light;
In the light passage portion, the interval between the light exit side openings is larger than the interval between the adjacent light entrance side openings, and when the entire end portion of each light exit side is viewed, the middle portion in the lateral direction is A plurality of light reflecting fins arranged in a convex or concave shape on the indoor space side,
A lighting device for indoor space characterized by comprising: The plurality of light reflecting fins are:
Each is a plate-shaped member of the same shape,
The daylighting device for indoor space according to claim 1. The plurality of light reflecting fins are:
A member disposed on the light passing portion in such a manner that the vertical position of each light incident side end portion becomes higher in order from the light reflecting fin on the front side of the incident light with respect to the lateral direction of the entire light reflecting fin. is there,
The daylighting device for indoor space according to claim 1. The plurality of light reflecting fins are:
The middle portion in the horizontal direction is convex toward the indoor space region side, and the pitch between the light incident side end portions is narrow at the middle portion in the horizontal direction and wide at the outer portion.
The daylighting device for indoor space according to claim 1. In the daylighting method for indoor space,
A plurality of light reflecting fins are provided in the light passage portion for capturing light.
When the interval between the light emitting side openings is larger than the interval between the light incident side openings adjacent to the light reflecting fins, and the entire light emitting side end of each of the light reflecting fins is viewed in the lateral direction. By arranging the middle part in a shape that is convex or concave on the indoor space side,
The incident light to the light passage part is propagated to the indoor space area while being reflected by the action of the light reflecting fins adjacent to each other.
Daylighting method for indoor space.

Images