JP2009123351A

JP2009123351A - Daylighting device

Info

Publication number: JP2009123351A
Application number: JP2007292800A
Authority: JP
Inventors: Kaomi Taneichi; 薫美種市; Tsutomu Matsuda; 力松田; Yasuji Mihashi; 保治三橋
Original assignee: Sankyo Tateyama Aluminium Inc
Current assignee: Sankyo Tateyama Aluminium Inc
Priority date: 2007-11-12
Filing date: 2007-11-12
Publication date: 2009-06-04
Anticipated expiration: 2027-11-12
Also published as: JP5038100B2

Abstract

<P>PROBLEM TO BE SOLVED: To provide a daylighting device capable of efficiently taking light having a low incident angle (10°-30°) in the morning and evening or in the winter into the indoor as indirect light while intercepting the line of sight from the outdoor. <P>SOLUTION: This daylighting device is equipped with a daylighting part 1 extended to the outdoor side, a light guide part 2 passing through a wall 15, and a light emitting part 3 extended to the indoor side. The daylighting part and the light emitting part have upward translucent panels 4, 6 respectively, the translucent panel 4 of the daylighting part inclines toward the indoor side with a descending slope, a first reflector 7 inclined at an angle of 20°-30° from a horizontal plane with an ascending slope and a second reflector 8 inclined at an angle of 40°-60° toward the indoor side are consecutively connected from the outdoor side to the indoor side, and light entered from the translucent panel 4 of the daylighting part is reflected by the reflectors 7, 8 to emit light to the indoor from the translucent panel 6 of the light emitting part. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、屋外からの視線を遮りつつ太陽の光を屋内に採り込む採光装置に関する。 The present invention relates to a daylighting apparatus that takes in sunlight indoors while blocking the line of sight from the outside.

窓から射し込む太陽の光は、人が健康で快適な生活を送る上で重要な要素である。隣家が間近に迫っているような都市の住宅においては、窓を設けても十分な採光がなされないばかりか、プライバシーの確保が難しいといった問題がある。
特許文献１には、窓上部より屋外側に張り出す庇と、窓の高さ方向の中間部から屋内側に張り出したライトシェルフとを備えた採光装置が開示されている。この採光装置は、窓の正面からは室内の様子を見ることができるので、プライバシーを確保できない。また同採光装置は、太陽光をライトシェルフで屋内の天井面に向けて反射させて照明光として利用するとしているが、朝夕や冬期の低い入射角（１０°〜３０°）の光は、ライトシェルフで反射した光が天井面に届かないので、その機能を発揮し得ない。 The sunlight that shines through the window is an important factor for people to live a healthy and comfortable life. In urban houses where neighbors are approaching, there are problems such as not being able to get enough light even if windows are installed, and ensuring privacy.
Patent Document 1 discloses a daylighting apparatus including a ridge projecting from the upper part of a window to the outdoor side and a light shelf projecting from an intermediate part in the height direction of the window to the indoor side. Since this daylighting apparatus can see the state of the room from the front of the window, privacy cannot be ensured. In addition, the daylighting device reflects sunlight toward the indoor ceiling surface with a light shelf and uses it as illumination light. However, light with a low incident angle (10 ° to 30 °) in the morning or evening is light. Since the light reflected by the shelf does not reach the ceiling surface, it cannot perform its function.

特許文献２には、内部に反射鏡を有するダクトを用いた採光装置が開示されている。この採光装置は、水平に設けた光導入口と、光導入口と対向する底面に設けられた反射鏡とを備えており、反射鏡は角度の異なる第１の反射部と第２の反射部とを連設してあり、光導入口の光軸となす光入射角をθ、必要とする最大入射角をθｍａｘとした時に、最大入射角θｍａｘ以下の全ての入射角の光をダクト内に導けるように、第１の反射部と第２の反射部を設定している。しかし、最大入射角θｍａｘよりも大きい入射角の光、水平面を基準とする入射角でいえば（９０°−θｍａｘ）よりも小さい入射角の光は、すべてダクト内に導けるものではなく、したがって朝夕や冬期の低い入射角（１０°〜３０°）の光を効率よく室内に採り入れられるものではなかった。例えば最大入射角θｍａｘを５５°に設定したとすると、図１０に示すように、第１の反射部３２の傾斜角度は５５°、第２の反射部３１の傾斜角度は７２．５°となるが、水平面に対する入射角θ´が小さいと、光導入口の幅Ａに対する光導入口に入射する光の幅Ｂの割合Ｂ／Ａが極端に小さくなり、しかも入射角θ´が１７．５°よりも小さい光は、第２の反射部３１で反射されてダクト内に入らない。
特開２０００−２８５７１０号公報特開２００１−２１６８２１号公報 Patent Document 2 discloses a daylighting device using a duct having a reflecting mirror inside. The daylighting device includes a light entrance provided horizontally and a reflecting mirror provided on a bottom surface facing the light entrance, and the reflecting mirror includes a first reflecting portion and a second reflecting portion having different angles. And the light incident angle formed with the optical axis of the light entrance is θ, and the required maximum incident angle is θmax, light of all incident angles equal to or smaller than the maximum incident angle θmax is placed in the duct. The first reflection part and the second reflection part are set so that they can be guided. However, light having an incident angle larger than the maximum incident angle θmax and light having an incident angle smaller than (90 ° −θmax) with respect to the incident angle with respect to the horizontal plane cannot be guided into the duct. In addition, light with a low incident angle (10 ° to 30 °) in winter was not able to be taken into the room efficiently. For example, if the maximum incident angle θmax is set to 55 °, as shown in FIG. 10, the inclination angle of the first reflection portion 32 is 55 °, and the inclination angle of the second reflection portion 31 is 72.5 °. However, when the incident angle θ ′ with respect to the horizontal plane is small, the ratio B / A of the width B of light incident on the light entrance to the width A of the light entrance becomes extremely small, and the incident angle θ ′ is 17.5 °. Light smaller than that is reflected by the second reflecting portion 31 and does not enter the duct.
JP 2000-285710 A Japanese Patent Application Laid-Open No. 2001-216821

本発明は以上に述べた実情に鑑み、屋外からの視線を遮りながら朝夕時や冬期の低い入射角（１０°〜３０°）の光を間接光として効率よく室内に採り込むことのできる採光装置の提供を目的とする。 In light of the circumstances described above, the present invention provides a daylighting apparatus that can efficiently take light of a low incident angle (10 ° to 30 °) in the morning or evening or winter as indirect light while blocking the line of sight from the outside. The purpose is to provide

上記の課題を達成するために請求項１記載の発明による採光装置は、屋外側に張出した採光部と、壁を貫いた導光部と、屋内側に張出した放光部とを備え、採光部と放光部にはそれぞれ上向きの透光パネルを有し、採光部の透光パネルは屋外側に向かって下り勾配で傾斜しており、放光部内に、屋内側に向かって上り勾配で水平面から２０°〜３０°傾斜した第１反射板と４０°〜６０°傾斜した第２反射板とを屋外側から屋内側に連設してあり、採光部の透光パネルから入射した光を反射板で反射して放光部の透光パネルから室内に上向きに放光することを特徴とする。 In order to achieve the above object, a daylighting apparatus according to the first aspect of the present invention includes a daylighting unit projecting to the outdoor side, a light guide unit penetrating the wall, and a light emitting unit projecting to the indoor side. The light-transmitting part has an upward light-transmitting panel, and the light-transmitting light-transmitting panel inclines with a downward slope toward the outdoor side, and within the light-emitting part with an upward slope toward the indoor side. A first reflector inclined by 20 ° to 30 ° from a horizontal plane and a second reflector inclined by 40 ° to 60 ° are continuously provided from the outdoor side to the indoor side, and light incident from the translucent panel of the daylighting unit is received. It is characterized by being reflected upward by a reflector and emitting light upward from the light transmitting panel of the light emitting part into the room.

請求項２記載の発明による採光装置は、請求項１記載の発明の構成に加え、導光部内の底面に反射板が水平に設けてあることを特徴とする。 The daylighting device according to a second aspect of the invention is characterized in that, in addition to the configuration of the first aspect of the invention, a reflector is horizontally provided on the bottom surface in the light guide section.

請求項１記載の発明による採光装置は、屋外側に張出した採光部と屋内側に張出した放光部に上向きの透光パネルを有し、採光部の透光パネルから入射した光を放光部内に設けた反射板で反射して放光部の透光パネルから室内に上向きに放光するようにしたので、屋外からの視線を遮りながら太陽光を間接照明として室内に採り入れることができ、採光部の透光パネルが屋外側に向かって下り勾配で傾斜していると共に、反射板を屋内側に向かって上り勾配で水平面から２０°〜３０°傾斜した第１反射板と４０°〜６０°傾斜した第２反射板とを屋外側から屋内側に連設した構成としたことで、朝夕時や冬期の低い入射角（１０°〜３０°）の光を効率よく室内に採り込むことができる。 The daylighting device according to the first aspect of the present invention has an upward light-transmitting panel in the daylighting unit extending to the outdoor side and the light-emitting unit extending to the indoor side, and emits light incident from the light-transmitting panel of the daylighting unit Because it is reflected by the reflector provided in the unit and emitted upward from the translucent panel of the light emitting part into the room, sunlight can be taken into the room as indirect lighting while blocking the line of sight from the outside, The translucent panel of the daylighting unit is inclined with a downward gradient toward the outdoor side, and the reflective plate is inclined upward from the horizontal plane with an upward gradient toward the indoor side by 20 ° to 30 ° and 40 ° to 60 °. By adopting a configuration in which the inclined second reflecting plate is connected from the outdoor side to the indoor side, light with a low incident angle (10 ° to 30 °) in the morning and evening and winter can be efficiently taken into the room. it can.

さらに請求項２記載の発明による採光装置は、導光部内の底面に反射板が水平に設けてあることで、導光の効率をより一層向上することができる。 Furthermore, in the daylighting device according to the second aspect of the present invention, the light guide efficiency can be further improved by providing the reflecting plate horizontally on the bottom surface in the light guide section.

以下、本発明の実施の形態を図面に基づいて説明する。図１は、本発明の採光装置の一実施形態を示す縦断面図であり、図２は同採光装置の屋内側から見た斜視図である。本採光装置は、内部が空洞の箱状に形成され、建物の屋外側に面した壁１５の高い位置の躯体開口部１１に、排煙窓等の窓と同じような形で取付けている。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing an embodiment of a daylighting apparatus of the present invention, and FIG. 2 is a perspective view of the daylighting apparatus as viewed from the indoor side. The daylighting device is formed in a box shape having a hollow inside, and is attached to the housing opening 11 at a high position of the wall 15 facing the outdoor side of the building in the same manner as a window such as a smoke exhaust window.

本採光装置は、図１に示すように、屋外側に張出した採光部１と、壁１５を貫いた導光部２と、屋内側に張出した放光部３とを有している。採光部１の上面は、屋外側に向かって下り勾配で水平面から４０°傾斜しており、その傾斜した採光部１上面に採光用の四角い窓１ａが形成してあり、その採光用の窓１ａにガラスや樹脂の透明板よりなる透光パネル４が嵌め込んである。このように採光部３の透光パネル４を４０°傾けて設置してあることで、朝夕の低い入射角の光から昼間の高い入射角の光まで、効率よく採光装置内に入射する。採光部３内の底部には、反射板１０が屋外側に向かって上り勾配で水平面から２０°傾斜して設置してある。
導光部２は、躯体開口部１１の内周側面に断熱材１２を取付け、導光部２内の底面と天面とに反射板５，１３を水平に取付けている。
放光部３は、上面が屋内側に向かって下り勾配で水平面から２０°傾斜しており、その傾斜した放光部３上面に放光用の四角い窓３ａを形成し、その放光用の窓３ａにガラスや樹脂の透明板よりなる透光パネル６が嵌め込んである。放光部３内の底部には、屋内側に向かって上り勾配で水平面から２０°〜３０°傾斜した第１反射板７と４０°〜６０°傾斜した第２反射板８とを、屋外側から屋内側に連設している。第１反射板７と第２反射板８の屋内外方向の幅は、同じになっている。このように、角度の異なる第１反射板７と第２反射板８を連設することで、屋外側から屋内側への導光率を向上させることができ、また第１反射板７の角度αの範囲（２０°〜３０°）と第２反射板８の角度βの範囲（４０°〜６０°）は、特に朝夕時や冬期の低い入射角（１０°〜３０°）の光９を、放光部３の透光パネル６から室内に効率よく採り込めるように設定している。この点に関しては、後で詳しく述べる。
さらに本採光装置は、装置内部の左右の側面にも反射板１４を取付けている。 As shown in FIG. 1, the present daylighting apparatus includes a daylighting unit 1 projecting to the outdoor side, a light guide unit 2 penetrating the wall 15, and a light emitting unit 3 projecting to the indoor side. The upper surface of the daylighting unit 1 is inclined downward by 40 ° from the horizontal plane toward the outdoor side, and a rectangular window 1a for daylighting is formed on the upper surface of the inclined daylighting unit 1, and the window 1a for daylighting is formed. A translucent panel 4 made of a transparent plate made of glass or resin is fitted in. As described above, the translucent panel 4 of the daylighting unit 3 is installed at an angle of 40 °, so that light from a low incident angle in the morning and evening to a light having a high incident angle in the daytime efficiently enters the daylighting apparatus. At the bottom of the daylighting unit 3, the reflector 10 is installed with an upward slope toward the outdoor side and inclined 20 ° from the horizontal plane.
The light guide 2 has a heat insulating material 12 attached to the inner peripheral side surface of the housing opening 11, and reflectors 5 and 13 are horizontally attached to the bottom and top surfaces of the light guide 2.
The light emitting unit 3 has an upper surface inclined downward by 20 ° from the horizontal plane toward the indoor side, and a light emitting square window 3a is formed on the inclined upper surface of the light emitting unit 3 to emit light. A transparent panel 6 made of a transparent plate made of glass or resin is fitted in the window 3a. The bottom part in the light emission part 3 has the 1st reflecting plate 7 inclined 20 degrees-30 degrees from the horizontal surface and the 2nd reflecting plate 8 inclined 40 degrees-60 degrees on the outdoor side ascending toward the indoor side. To the indoor side. The widths of the first reflector 7 and the second reflector 8 in the indoor / outdoor direction are the same. Thus, the light guide rate from the outdoor side to the indoor side can be improved by connecting the first reflector 7 and the second reflector 8 at different angles, and the angle of the first reflector 7 The range of α (20 ° to 30 °) and the range of the angle β of the second reflector 8 (40 ° to 60 °) include light 9 having a low incident angle (10 ° to 30 °) especially in the morning and evening. The light-transmitting section 3 is set so that it can be efficiently taken into the room from the translucent panel 6. This will be described in detail later.
Further, the present daylighting apparatus also has a reflector 14 attached to the left and right side surfaces inside the apparatus.

本採光装置は、図１に示すように、採光部１の透光パネル４より太陽の光９が入射し、光９は放光部３の底部に設けた第１反射板７と第２反射板８に反射して（光９の入射角によっては、採光部１や導光部２の反射板１０，１２でも反射する）、放光部３の透光パネル６より上向きに放光される。本採光装置によれば、屋外からの視線を遮りつつ太陽の光を間接照明として利用することができ、プライバシー保護の観点から窓を設置できない場合でも、自然の光を感じながら快適に生活することができる。 In this daylighting apparatus, as shown in FIG. 1, solar light 9 is incident from a translucent panel 4 of the daylighting unit 1, and the light 9 is reflected by a first reflector 7 and a second reflection provided at the bottom of the light emitting unit 3. Reflected by the plate 8 (also reflected by the reflecting plates 10 and 12 of the daylighting unit 1 and the light guide unit 2 depending on the incident angle of the light 9) and emitted upward from the translucent panel 6 of the light emitting unit 3. . According to this daylighting device, the sun's light can be used as indirect lighting while blocking the line of sight from the outside, and even if windows cannot be installed from the viewpoint of privacy protection, living comfortably while feeling natural light Can do.

図３〜図６は、放光部３内の第１反射板７の角度αと第２反射板８の角度βの範囲を決めるために行ったシミュレーションの結果を示している。図３は第１反射板７の角度αが２０°で第２反射板８の角度βが４０°の場合、図４は第１反射板７の角度αが２０°で第２反射板８の角度βが６０°の場合、図５は第１反射板７の角度αが３０°で第２反射板８の角度βが４０°の場合、図６は第１反射板７の角度αが３０°で第２反射板８の角度βが６０°の場合であり、それぞれ入射角が１０°，２０°，３０°の光９の導光状態を示している。各図の上段の（ａ）図は、採光部１の透光パネル４から入射した光９が第１反射板７と第２反射板８で直接反射して放光部３の透光パネル６から室内に採り込まれるものについて示しており、下段の（ｂ）図は、導光部２底面の反射板５で反射してから室内に採り込まれる光について示している。導光率は、採光部１の透光パネル４に入射する光９の帯の全幅Ａに対する、室内に採り込まれる光９ａの帯（図中のハッチングした部分）の幅の割合から算出している。（ａ）図の導光率と（ｂ）図の導光率を合わせた値が、採光装置全体としての導光率になる。
図７は、比較例として放光部内に０°，２０°，３０°の反射板３０のみを設置した場合の入射角１０°，２０°，３０°の光９の導光状態を示している。 3 to 6 show the results of a simulation performed to determine the range of the angle α of the first reflecting plate 7 and the angle β of the second reflecting plate 8 in the light emitting unit 3. 3 shows that when the angle α of the first reflector 7 is 20 ° and the angle β of the second reflector 8 is 40 °, FIG. 4 shows that the angle α of the first reflector 7 is 20 ° and the second reflector 8 5 is 30 °, the angle α of the first reflector 7 is 30 °, and the angle β of the second reflector 8 is 40 °. FIG. This is a case where the angle β of the second reflector 8 is 60 °, and shows a light guide state of the light 9 having incident angles of 10 °, 20 °, and 30 °, respectively. The upper part (a) of each figure shows that the light 9 incident from the light transmitting panel 4 of the daylighting unit 1 is directly reflected by the first reflecting plate 7 and the second reflecting plate 8 and the light transmitting unit 6 of the light emitting unit 3. The lower figure (b) shows the light taken into the room after being reflected by the reflecting plate 5 on the bottom surface of the light guide section 2. The light guide ratio is calculated from the ratio of the width of the band of light 9a (hatched portion in the figure) taken into the room to the full width A of the band of light 9 incident on the light transmitting panel 4 of the daylighting unit 1. Yes. A value obtained by combining the light guide rate in (a) and the light guide rate in (b) is the light guide rate of the entire daylighting apparatus.
FIG. 7 shows a light guide state of the light 9 having an incident angle of 10 °, 20 °, and 30 ° when only the 0 °, 20 °, and 30 ° reflecting plate 30 is installed in the light emitting portion as a comparative example. .

第１反射板７の角度αと第２反射板８の角度βの範囲は、入射角θが１０°〜３０°のときに、第１反射板７と第２反射板８のみによる導光率（図３〜６の（ａ）の導光率）が２６％以上になり、且つ導光部底面の反射板の反射光も含めた全体での導光率（図３〜６の導光率（ａ）＋（ｂ））が３６％以上になるように設定している。
第１反射板７の角度αは、図３と図４の左上の図より、２０°よりも小さいと入射角θ＝１０°のときに第１反射板７を介して光を採り込めなくなり、また全体での導光率３６％以上を確保できなくなるため、最小値を２０°とした。また、図５と図６の右上の図より、第１反射板の角度αが３０°よりも大きいと、入射角θ＝３０°のときに第１反射板７と第２反射板８のみによる導光率が２６％以下になるため、最大値を３０°とした。
第２反射板の角度βは、図３の左上・左下の図より、４０°よりも小さいと入射角θ＝１０°のときに全体の導光率が３６％以下になるため、最小値を４０°とした。また、図４の左上・左下の図より、第２反射板の角度βが６０°よりも大きいと入射角θ＝１０°のときの全体の導光率が３６％以下になるため、最大値を６０°とした。 The range of the angle α of the first reflecting plate 7 and the angle β of the second reflecting plate 8 is such that the light guide rate by only the first reflecting plate 7 and the second reflecting plate 8 when the incident angle θ is 10 ° to 30 °. (The light guide rate of (a) of FIGS. 3 to 6) is 26% or more, and the overall light guide rate including the reflected light of the reflection plate on the bottom surface of the light guide unit (the light guide rate of FIGS. 3 to 6). (A) + (b)) is set to be 36% or more.
If the angle α of the first reflecting plate 7 is smaller than 20 ° as shown in the upper left of FIGS. 3 and 4, light cannot be taken in through the first reflecting plate 7 when the incident angle θ = 10 °. In addition, since the overall light guide rate of 36% or more cannot be secured, the minimum value is set to 20 °. 5 and 6, when the angle α of the first reflector is larger than 30 °, only the first reflector 7 and the second reflector 8 are used when the incident angle θ = 30 °. Since the light guide rate is 26% or less, the maximum value is set to 30 °.
The angle β of the second reflector is lower than the upper left and lower left of FIG. 3, and if the angle is smaller than 40 °, the overall light guide rate becomes 36% or less when the incident angle θ = 10 °. The angle was 40 °. In addition, from the upper left and lower left diagrams of FIG. 4, when the angle β of the second reflector is larger than 60 °, the overall light guide rate when the incident angle θ = 10 ° is 36% or less, so the maximum value Was 60 °.

図８は、図３〜図７のシミュレーションの結果より求めた導光率を、第１反射板７と第２反射板８を連設した場合と、連設しない場合（図７（ｂ），（ｃ））とで比較したグラフである。
図８−１（ａ），（ｂ）に示すように、２０°の反射板３０のみでは入射角θが１０°のときに導光率が僅か２％であるのに対して、２０°の第１反射板に４０°，６０°の第２反射板を連設したときには、それぞれ４０％，３７％の導光率を確保できる。なお、図７（ａ）に示すように、放光部内に設置した反射板３０の角度が０°のときには、入射角１０°，２０°，３０°の光の導光率はいずれも０％である。
また、第１反射板７と第２反射板８のみによる導光率は、第１反射板７の角度αが２０°で第２反射板８の角度βが４０°のときの入射角θ＝２０°、第１反射板７の角度αが３０°で第２反射板８の角度βが４０°のときの入射角θ＝１０°、第１反射板７の角度αが３０°で第２反射板８の角度βが６０°のときの入射角θ＝１０°においても、連設しない場合よりも向上している。これは、図３（ａ）の中央の図などに示すように、第１反射板７の反射光と第２反射板８の反射光の両方が室内に採り込めるためである。
図８−２（ｄ）に示すように、第１反射板７の角度αが３０°で第２反射板８の角度βが６０°の場合の入射角θ＝２０°のときだけは、第１反射板７と第２反射板８のみによる導光率が連設しない場合よりも低下するが、導光部底面の反射板３０の反射光も含めた全体の導光率では、連設しない場合よりも向上する。導光部底面の反射板５は、入射角θが２０°，３０°のときの導光率向上に寄与する。 FIG. 8 shows the light guide ratio obtained from the simulation results of FIGS. 3 to 7 when the first reflecting plate 7 and the second reflecting plate 8 are connected to each other and when not connected (FIG. 7B, It is the graph compared by (c)).
As shown in FIGS. 8-1 (a) and (b), the light guide rate is only 2% when the incident angle θ is 10 ° with only the 20 ° reflection plate 30, whereas it is 20 °. When a second reflector of 40 ° and 60 ° is connected to the first reflector, a light guide rate of 40% and 37% can be secured, respectively. As shown in FIG. 7A, when the angle of the reflecting plate 30 installed in the light emitting part is 0 °, the light guide rates of the incident angles of 10 °, 20 °, and 30 ° are all 0%. It is.
Further, the light guide rate by only the first reflector 7 and the second reflector 8 is an incident angle θ = when the angle α of the first reflector 7 is 20 ° and the angle β of the second reflector 8 is 40 °. When the angle α of the first reflector 7 is 30 ° and the angle β of the second reflector 8 is 40 °, the incident angle θ = 10 °, and the angle α of the first reflector 7 is 30 °. Even when the angle β of the reflecting plate 8 is 60 °, the incident angle θ is 10 °, which is improved as compared with the case where the reflection plate 8 is not provided continuously. This is because both the reflected light of the first reflecting plate 7 and the reflected light of the second reflecting plate 8 can be taken into the room, as shown in the center diagram of FIG.
As shown in FIG. 8-2 (d), only when the incident angle θ = 20 ° when the angle α of the first reflector 7 is 30 ° and the angle β of the second reflector 8 is 60 °, Although the light guide rate of only the first reflector 7 and the second reflector 8 is lower than the case where the light reflector is not continuously provided, the light guide rate is not continuously provided with the entire light guide rate including the reflected light of the reflector 30 on the bottom surface of the light guide unit. Improve than the case. The reflection plate 5 on the bottom surface of the light guide part contributes to improvement of the light guide rate when the incident angle θ is 20 ° or 30 °.

以上に述べたように本採光装置は、放光部内に２０°〜３０°傾斜した第１反射板と４０°〜６０°傾斜した第２反射板とを連設したことで、朝夕時や冬期の低い入射角（１０°〜３０°）の光を効率よく室内に採り込むことができる。さらに、導光部２の底面にも反射板５を有していることで、導光率をより一層向上することができる。さらに本採光装置は、採光部１内にも反射板１０が屋内外方向に対して２０°傾けて設置してあることで、図９に示すように、朝夕時の低い入射角の光だけでなく、昼間の高い入射角の光９も室内に採り込むことができる。 As described above, the daylighting apparatus is provided with the first reflecting plate inclined at 20 ° to 30 ° and the second reflecting plate inclined at 40 ° to 60 ° in the light emitting part, so that it can be used in the morning and evening and in winter. Light having a low incident angle (10 ° to 30 °) can be efficiently taken into the room. Furthermore, the light guide rate can be further improved by having the reflecting plate 5 on the bottom surface of the light guide unit 2. Further, the present daylighting apparatus is also provided with the reflector 10 in the daylighting section 1 being inclined by 20 ° with respect to the indoor / outdoor direction, so that only the light having a low incident angle in the morning and evening hours as shown in FIG. In addition, the light 9 having a high incident angle in the daytime can be taken into the room.

本発明は以上に述べた実施形態に限定されない。第１反射板７は２０°〜３０°の範囲、第２反射板８は４０°〜６０°の範囲で、それぞれ角度を自由に設定することができる。第１反射板７と第２反射板８の屋内外方向の幅は、異ならせることもできる。採光部１内の底面と導光部２内の底面の反射板１０，５は、省略することもできる。採光部１と放光部３の張出し寸法、透光パネル４，６の角度は、適宜変更することができる。採光部の透光パネル４の傾斜角度は、４０°よりも緩い角度や急な角度であってもよい。放光部の透光パネル６は、水平に設置してもよい。 The present invention is not limited to the embodiments described above. The angle can be freely set for the first reflector 7 within a range of 20 ° to 30 °, and the second reflector 8 within a range of 40 ° to 60 °. The indoor and outdoor widths of the first reflector 7 and the second reflector 8 can be different. The reflectors 10 and 5 on the bottom surface in the daylighting unit 1 and the bottom surface in the light guide unit 2 can be omitted. The overhanging dimensions of the daylighting unit 1 and the light emitting unit 3 and the angles of the translucent panels 4 and 6 can be appropriately changed. The inclination angle of the translucent panel 4 of the daylighting unit may be an angle that is less than 40 ° or a steep angle. The translucent panel 6 of the light emitting part may be installed horizontally.

本発明の採光装置の一実施形態を示す縦断面図である。It is a longitudinal cross-sectional view which shows one Embodiment of the lighting apparatus of this invention. 同採光装置の室内側から見た斜視図である。It is the perspective view seen from the room inner side of the lighting device. 第１反射板の角度が２０°で第２反射板の角度が４０°の場合の入射角１０°，２０°，３０°の光の導光状態を示す縦断面図であって、（ａ）は第１反射板と第２反射板のみで反射する光について、（ｂ）は導光部底面の反射板で反射する光について示している。It is a longitudinal cross-sectional view which shows the light guide state of incident angles 10 degrees, 20 degrees, and 30 degrees when the angle of a 1st reflector is 20 degrees and the angle of a 2nd reflector is 40 degrees, (a) Indicates light reflected by only the first reflector and the second reflector, and (b) indicates light reflected by the reflector on the bottom surface of the light guide section. 第１反射板の角度が２０°で第２反射板の角度が６０°の場合の入射角１０°，２０°，３０°の光の導光状態を示す縦断面図であって、（ａ）は第１反射板と第２反射板のみで反射する光について、（ｂ）は導光部底面の反射板で反射する光について示している。It is a longitudinal cross-sectional view which shows the light guide state of the incident angles 10 degrees, 20 degrees, and 30 degrees when the angle of a 1st reflecting plate is 20 degrees, and the angle of a 2nd reflecting plate is 60 degrees, (a) Indicates light reflected by only the first reflector and the second reflector, and (b) indicates light reflected by the reflector on the bottom surface of the light guide section. 第１反射板の角度が３０°で第２反射板の角度が４０°の場合の入射角１０°，２０°，３０°の光の導光状態を示す縦断面図であって、（ａ）は第１反射板と第２反射板のみで反射する光について、（ｂ）は導光部底面の反射板で反射する光について示している。It is a longitudinal cross-sectional view which shows the light guide state of the incident angles 10 degrees, 20 degrees, and 30 degrees when the angle of a 1st reflecting plate is 30 degrees, and the angle of a 2nd reflecting plate is 40 degrees, (a) Indicates light reflected by only the first reflector and the second reflector, and (b) indicates light reflected by the reflector on the bottom surface of the light guide section. 第１反射板の角度が３０°で第２反射板の角度が６０°の場合の入射角１０°，２０°，３０°の光の導光状態を示す縦断面図であって、（ａ）は第１反射板と第２反射板のみで反射する光について、（ｂ）は導光部底面の反射板で反射する光について示している。It is a longitudinal cross-sectional view which shows the light guide state of the incident angles 10 degrees, 20 degrees, and 30 degrees when the angle of a 1st reflecting plate is 30 degrees and the angle of a 2nd reflecting plate is 60 degrees, (a) Indicates light reflected by only the first reflector and the second reflector, and (b) indicates light reflected by the reflector on the bottom surface of the light guide section. 本発明との比較例として、放光部内に連設しない単一の反射板を設置した場合の入射角１０°，２０°，３０°の光の導光状態を示す縦断面図であって、（ａ）は反射板の角度が０°の場合、（ｂ）は反射板の角度が２０°の場合、（ｃ）は反射板の角度が３０°の場合を示している。As a comparative example with the present invention, it is a longitudinal cross-sectional view showing a light guide state of light at an incident angle of 10 °, 20 °, 30 ° when a single reflector that is not provided continuously in the light emitting part is installed, (A) shows the case where the angle of the reflector is 0 °, (b) shows the case where the angle of the reflector is 20 °, and (c) shows the case where the angle of the reflector is 30 °. 第１反射板と第２反射板を連設した場合と連設しない場合とで入射角１０°，２０°，３０°の光の導光率を比較したグラフであり、（ａ）は第１反射板の角度が２０°で第２反射板の角度が４０°の場合、（ｂ）は第１反射板の角度が２０°で第２反射板の角度が６０°の場合を示している。It is the graph which compared the light guide rate of incident angle 10 degrees, 20 degrees, and 30 degrees with the case where the 1st reflecting plate and the 2nd reflecting plate are connected, and the case where it does not connect continuously, (a) is the 1st. When the angle of the reflector is 20 ° and the angle of the second reflector is 40 °, (b) shows the case where the angle of the first reflector is 20 ° and the angle of the second reflector is 60 °. 第１反射板と第２反射板を連設した場合と連設しない場合とで入射角１０°，２０°，３０°の光の導光率を比較したグラフであり、（ａ）は第１反射板の角度が３０°で第２反射板の角度が４０°の場合、（ｂ）は第１反射板の角度が３０°で第２反射板の角度が６０°の場合を示している。It is the graph which compared the light guide rate of incident angle 10 degrees, 20 degrees, and 30 degrees with the case where the 1st reflecting plate and the 2nd reflecting plate are connected, and the case where it does not connect continuously, (a) is the 1st. When the angle of the reflector is 30 ° and the angle of the second reflector is 40 °, (b) shows the case where the angle of the first reflector is 30 ° and the angle of the second reflector is 60 °. 図１に示す実施形態の採光装置において、昼間の高い入射角の光の導光状態を示す縦断面図である。FIG. 2 is a longitudinal sectional view showing a light guiding state of light having a high incident angle in the daytime in the daylighting device of the embodiment shown in FIG. 1. 特許文献２に開示された従来の採光装置に、低い入射角の光が入射したときの状態を示す縦断面図である。It is a longitudinal cross-sectional view which shows a state when the light of a low incident angle injects into the conventional lighting device disclosed by patent document 2. FIG.

Explanation of symbols

１採光部
２導光部
３放光部
４採光部の透光パネル
５導光部底面の反射板
６放光部の透光パネル
７第１反射板
８第２反射板
９光
１５壁
α 第１反射板の角度
β 第２反射板の角度
θ 光の入射角 DESCRIPTION OF SYMBOLS 1 Daylighting part 2 Light guide part 3 Light emission part 4 Translucent panel of light collection part 5 Reflection board of light guide part bottom face 6 Translucent panel of light emission part 7 1st reflection plate 8 2nd reflection plate 9 Light 15 Wall alpha 1st 1 Angle of reflector β Angle of second reflector θ Incident angle of light

Claims

A daylighting unit projecting to the outdoor side, a light guide unit penetrating the wall, and a light emitting unit projecting to the indoor side, each having a light-transmitting panel facing upward, and the daylighting unit The translucent panel is inclined toward the outdoor side with a downward gradient, and within the light-emitting portion, a first reflector that is inclined upward from the horizontal plane with an upward gradient toward the indoor side and 40 ° to 60 °. An inclined second reflecting plate is connected from the outdoor side to the indoor side, and light incident from the translucent panel of the daylighting unit is reflected by the reflecting plate and released upward from the translucent panel of the light emitting unit into the room. A daylighting device characterized by light.

The daylighting apparatus according to claim 1, wherein a reflecting plate is horizontally provided on a bottom surface in the light guide portion.