JP2019207830A

JP2019207830A - Luminaire

Info

Publication number: JP2019207830A
Application number: JP2018103765A
Authority: JP
Inventors: 寺田　守; Mamoru Terada; 守寺田; 洋次郎幅多; Yojiro Habata
Original assignee: Koizumi Lighting Technology Corp
Current assignee: Koizumi Lighting Technology Corp
Priority date: 2018-05-30
Filing date: 2018-05-30
Publication date: 2019-12-05
Anticipated expiration: 2038-05-30
Also published as: CN209819454U; JP7105617B2

Abstract

To provide a luminaire that can restrain intense light from being focused on a specific region on an installation surface for the luminaire even if the height of the luminaire is low.SOLUTION: A luminaire 1 comprises a housing 3, a first reflection part 7, a second reflection part 9, and a light source 11. The housing 3 comprises an opening 5. The first reflection part 7 reflects light toward the opening 5. The second reflection part 9 reflects lights toward the opening 5. The light source 11 is located below the first reflection part 7 and the second reflection part 9, and emits light toward the first reflection part 7 and the second reflection part 9. Light distribution LD2 of light LT2 of the light source 11 based on the second reflection part 9 is different from light distribution LD1 of light LT1 of the light source 11 based on the first reflection part 7.SELECTED DRAWING: Figure 2

Description

本発明は、照明器具に関する。 The present invention relates to a lighting fixture.

特許文献１に記載された照明器具は、筒状の下ポールと、筒状の上ポールと、灯具とを備える。下ポールは、地中に埋設される。上ポールは、下ポールの上端に接続される。灯具は、上ポールの上端に取付けられる。灯具は光源を有する。 The lighting fixture described in Patent Document 1 includes a cylindrical lower pole, a cylindrical upper pole, and a lamp. The lower pole is buried in the ground. The upper pole is connected to the upper end of the lower pole. The lamp is attached to the upper end of the upper pole. The lamp has a light source.

特開２０１０−２７７７１０号公報JP 2010-277710 A

しかしながら、特許文献１に記載された照明器具では、灯具が地面（照明器具の設置面）に光を照射する際に、照明器具に近い領域に強い光が集中する。つまり、照明器具に近い領域に照度ピークが存在する。特に照明器具の高さが低くなると、灯具の光源と地面との距離が短くなるため、照度ピークが顕著になる。その結果、見る人に、光が広がっていない印象を与える。 However, in the luminaire described in Patent Document 1, when the lamp irradiates light on the ground (installation surface of the luminaire), strong light concentrates in a region near the luminaire. That is, an illuminance peak exists in a region close to the lighting fixture. In particular, when the height of the lighting fixture is lowered, the distance between the light source of the lamp and the ground is shortened, so that the illuminance peak becomes remarkable. As a result, the viewer is given the impression that light is not spreading.

本発明は上記課題に鑑みてなされたものであり、その目的は、照明器具の高さが低い場合でも、照明器具の設置面上の特定の領域に強い光が集中することを抑制できる照明器具を提供することにある。 The present invention has been made in view of the above problems, and an object of the present invention is to provide a lighting apparatus that can suppress intense light from being concentrated on a specific area on the installation surface of the lighting apparatus even when the height of the lighting apparatus is low. Is to provide.

本願に開示する照明器具は、筐体と、第１反射部と、第２反射部と、光源とを備える。筐体は、開口を有する。第１反射部は、前記開口に向けて光を反射する。第２反射部は、前記開口に向けて光を反射する。光源は、前記第１反射部及び前記第２反射部の下方に位置し、前記第１反射部及び前記第２反射部に向けて光を出射する。前記第２反射部に基づく前記光源の光の配光は、前記第１反射部に基づく光源の光の配光と異なる。 The lighting fixture disclosed in the present application includes a housing, a first reflecting portion, a second reflecting portion, and a light source. The housing has an opening. The first reflecting portion reflects light toward the opening. The second reflecting portion reflects light toward the opening. The light source is positioned below the first reflection unit and the second reflection unit, and emits light toward the first reflection unit and the second reflection unit. The light distribution of the light source based on the second reflection unit is different from the light distribution of the light source based on the first reflection unit.

本願に開示する照明器具において、前記第２反射部は、光を反射する複数の第１反射面と、複数の凹部とを有することが好ましい。複数の凹部の各々は、前記第１反射面に対して窪んでいることが好ましい。前記複数の凹部の各々は、光を反射する第２反射面を有することが好ましい。 In the lighting fixture disclosed in the present application, it is preferable that the second reflecting portion includes a plurality of first reflecting surfaces that reflect light and a plurality of concave portions. Each of the plurality of recesses is preferably recessed with respect to the first reflecting surface. Each of the plurality of recesses preferably has a second reflecting surface that reflects light.

本願に開示する照明器具において、前記第２反射部は、光を反射する複数の第１反射面と、複数の凸部とを有することが好ましい。複数の凸部の各々は、前記第１反射面に対して突出していることが好ましい。前記複数の凸部の各々は、光を反射する第３反射面を有することが好ましい。 In the lighting fixture disclosed in the present application, it is preferable that the second reflecting portion includes a plurality of first reflecting surfaces that reflect light and a plurality of convex portions. Each of the plurality of convex portions preferably protrudes with respect to the first reflecting surface. Each of the plurality of convex portions preferably has a third reflecting surface that reflects light.

本願に開示する照明器具において、前記第２反射部は、前記光源から離れる方向に凸状に湾曲していることが好ましい。 In the lighting fixture disclosed in the present application, it is preferable that the second reflecting portion is curved in a convex shape in a direction away from the light source.

本願に開示する照明器具において、前記第１反射部は、前記光源から離れる方向に凸状に湾曲していることが好ましい。 In the lighting fixture disclosed in the present application, it is preferable that the first reflecting portion is curved in a convex shape in a direction away from the light source.

本発明によれば、照明器具の高さが低い場合でも、照明器具の設置面上の特定の領域に強い光が集中することを抑制できる。 ADVANTAGE OF THE INVENTION According to this invention, even when the height of a lighting fixture is low, it can suppress that strong light concentrates on the specific area | region on the installation surface of a lighting fixture.

本発明の実施形態１に係る照明器具を示す斜視図である。It is a perspective view which shows the lighting fixture which concerns on Embodiment 1 of this invention. 実施形態１に係る照明器具を示す模式的縦断面図である。1 is a schematic longitudinal sectional view showing a lighting apparatus according to Embodiment 1. FIG. 実施形態１に係る照明器具の第２反射部を示す斜視図である。It is a perspective view which shows the 2nd reflection part of the lighting fixture which concerns on Embodiment 1. FIG. 実施形態１に係る照明器具の第２反射部を示す模式的断面図である。6 is a schematic cross-sectional view showing a second reflecting portion of the lighting fixture according to Embodiment 1. FIG. 実施形態１に係る照明器具の第２反射部の一部を拡大して示す模式的断面図である。FIG. 3 is a schematic cross-sectional view showing a part of a second reflecting portion of the lighting fixture according to Embodiment 1 in an enlarged manner. 実施形態１の第１変形例に係る照明器具の第２反射部の一部を拡大して示す模式的断面図である。FIG. 6 is a schematic cross-sectional view showing a part of a second reflecting portion of a lighting fixture according to a first modification of Embodiment 1 in an enlarged manner. 実施形態１の第２変形例に係る照明器具の第２反射部の一部を拡大して示す模式的断面図である。It is a typical sectional view expanding and showing a part of the 2nd reflective part of the lighting fixture concerning a 2nd modification of Embodiment 1. 実施形態１の第３変形例に係る照明器具の第２反射部の一部を拡大して示す模式的断面図である。FIG. 6 is a schematic cross-sectional view showing a part of a second reflecting portion of a lighting fixture according to a third modification of Embodiment 1 in an enlarged manner. 本発明の実施形態２に係る照明器具を示す模式的縦断面図である。It is a typical longitudinal cross-sectional view which shows the lighting fixture which concerns on Embodiment 2 of this invention.

以下、本発明の実施形態について、図面を参照しながら説明する。なお、図中、同一または相当部分については同一の参照符号を付して説明を繰り返さない。また、図中、理解の容易のため、三次元直交座標系のＸ軸、Ｙ軸、およびＺ軸を適宜記載している。Ｘ軸及びＹ軸は水平方向に平行であり、Ｚ軸は鉛直方向に平行である。Ｚ軸の正方向は上方向を示し、Ｚ軸の負方向は下方向を示す。 Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the drawings, the same or corresponding parts are denoted by the same reference numerals and description thereof is not repeated. In the drawing, for easy understanding, an X axis, a Y axis, and a Z axis of a three-dimensional orthogonal coordinate system are appropriately described. The X axis and the Y axis are parallel to the horizontal direction, and the Z axis is parallel to the vertical direction. The positive direction of the Z axis indicates the upward direction, and the negative direction of the Z axis indicates the downward direction.

（実施形態１）
図１〜図５を参照して、本発明の実施形態１に係る照明器具１を説明する。まず、図１を参照して照明器具１を説明する。図１は、実施形態１に係る照明器具１を示す斜視図である。図１に示すように、照明器具１は設置面ＧＤに設置される。設置面ＧＤは、典型的には、地面である。照明器具１は、設置面ＧＤに向けて光を出射する。 (Embodiment 1)
With reference to FIGS. 1-5, the lighting fixture 1 which concerns on Embodiment 1 of this invention is demonstrated. First, the lighting fixture 1 is demonstrated with reference to FIG. FIG. 1 is a perspective view showing a lighting fixture 1 according to the first embodiment. As shown in FIG. 1, the lighting fixture 1 is installed in the installation surface GD. The installation surface GD is typically the ground. The lighting fixture 1 emits light toward the installation surface GD.

照明器具１は筐体３を備える。実施形態１では、筐体３は、中空の略直方体状である。筐体３は開口５を有する。開口５は略矩形状である。なお、照明器具１が設置面ＧＤに向けて光を出射できる限りにおいて、筐体３及び開口５の形状は特に限定されない。 The luminaire 1 includes a housing 3. In Embodiment 1, the housing | casing 3 is a hollow substantially rectangular parallelepiped shape. The housing 3 has an opening 5. The opening 5 has a substantially rectangular shape. In addition, as long as the lighting fixture 1 can radiate | emit light toward the installation surface GD, the shape of the housing | casing 3 and the opening 5 is not specifically limited.

次に、図２を参照して、照明器具１の内部構造を説明する。図２は、照明器具１を示す模式的縦断面図である。なお、図２では、図面の簡略化のため、断面を示すハッチングを適宜省略している。 Next, the internal structure of the lighting fixture 1 will be described with reference to FIG. FIG. 2 is a schematic longitudinal sectional view showing the lighting apparatus 1. In FIG. 2, hatching indicating a cross section is omitted as appropriate for simplification of the drawing.

図２に示すように、照明器具１は、第１反射部７と、第２反射部９と、光源１１と、支持体１３とをさらに備える。筐体３は、第１反射部７、第２反射部９、光源１１、及び支持体１３を収容する。 As shown in FIG. 2, the lighting fixture 1 further includes a first reflecting portion 7, a second reflecting portion 9, a light source 11, and a support body 13. The housing 3 accommodates the first reflecting portion 7, the second reflecting portion 9, the light source 11, and the support body 13.

支持体１３は筐体３の内部に固定される。支持体１３は光源１１を支持する。 The support 13 is fixed inside the housing 3. The support 13 supports the light source 11.

光源１１は、第１反射部７及び第２反射部９の下方に位置する。光源１１は、第１反射部７及び第２反射部９に向けて光ＬＴ０を出射する。具体的には、光源１１は発光体１１ａを含む。発光体１１ａは発光する。発光体１１ａは、単数又は複数の発光素子を含む。発光素子は、例えば、ＬＥＤ（ＬｉｇｈｔＥｍｉｔｔｉｎｇＤｉｏｄｅ）である。なお、発光体１１ａは、発光素子に代えて、蛍光灯又は白熱電球を含んでいてもよい。 The light source 11 is located below the first reflecting portion 7 and the second reflecting portion 9. The light source 11 emits light LT0 toward the first reflection unit 7 and the second reflection unit 9. Specifically, the light source 11 includes a light emitter 11a. The light emitter 11a emits light. The light emitter 11a includes one or a plurality of light emitting elements. The light emitting element is, for example, an LED (Light Emitting Diode). The light emitter 11a may include a fluorescent lamp or an incandescent bulb instead of the light emitting element.

第１反射部７は、開口５に向けて光ＬＴ１を反射する。具体的には、第１反射部７は、光源１１の出射した光ＬＴ０の一部を光ＬＴ１として開口５に向けて反射する。第１反射部７は反射面７ａを有する。反射面７ａは、例えば、光ＬＴ１を鏡面反射する。 The first reflecting unit 7 reflects the light LT1 toward the opening 5. Specifically, the first reflecting unit 7 reflects a part of the light LT0 emitted from the light source 11 toward the opening 5 as the light LT1. The first reflecting portion 7 has a reflecting surface 7a. The reflecting surface 7a, for example, specularly reflects the light LT1.

第１反射部７は支持体１３に固定される。第１反射部７は、断面視において略湾曲形状を有する。具体的には、第１反射部７は、開口５から離れる方向に凸状に湾曲している。つまり、第１反射部７は、光源１１から離れる方向に凸状に湾曲している。第１反射部７は、第２反射部９よりも光源１１の近くに配置される。 The first reflecting portion 7 is fixed to the support body 13. The first reflecting portion 7 has a substantially curved shape in a sectional view. Specifically, the first reflecting portion 7 is curved in a convex shape in a direction away from the opening 5. That is, the first reflecting portion 7 is curved in a convex shape in a direction away from the light source 11. The first reflecting unit 7 is disposed closer to the light source 11 than the second reflecting unit 9.

第２反射部９は、開口５に向けて光ＬＴ２を反射する。具体的には、第２反射部９は、光源１１の出射した光ＬＴ０の一部を光ＬＴ２として開口５に向けて反射する。第２反射部９は反射面９ａを有する。反射面９ａは、例えば、光ＬＴ２を鏡面反射する。 The second reflecting unit 9 reflects the light LT2 toward the opening 5. Specifically, the second reflecting portion 9 reflects a part of the light LT0 emitted from the light source 11 toward the opening 5 as the light LT2. The second reflecting portion 9 has a reflecting surface 9a. For example, the reflection surface 9a specularly reflects the light LT2.

第２反射部９は支持体１３に固定される。第２反射部９は、断面視において略湾曲形状を有する。具体的には、第２反射部９は、開口５から離れる方向に凸状に湾曲している。つまり、第２反射部９は、光源１１から離れる方向に凸状に湾曲している。第２反射部９は、第１反射部７よりも光源１１から離れて配置される。 The second reflecting portion 9 is fixed to the support body 13. The second reflecting portion 9 has a substantially curved shape in a sectional view. Specifically, the second reflecting portion 9 is curved in a convex shape in a direction away from the opening 5. That is, the second reflecting portion 9 is curved in a convex shape in a direction away from the light source 11. The second reflecting unit 9 is arranged farther from the light source 11 than the first reflecting unit 7.

第１反射部７の反射面７ａ及び第２反射部９の反射面９ａの各々は、例えば、鏡面反射を起こす塗料を板金又は合成樹脂に塗布することにより形成される。又は、反射面７ａ及び反射面９ａの各々は、例えば、鏡面反射を起こすように板金又は合成樹脂にメッキを行うことにより形成される。なお、反射面７ａ及び反射面９ａの各々は、鏡面を有することは必須ではない。 Each of the reflecting surface 7a of the first reflecting portion 7 and the reflecting surface 9a of the second reflecting portion 9 is formed, for example, by applying a paint that causes specular reflection to sheet metal or synthetic resin. Alternatively, each of the reflecting surface 7a and the reflecting surface 9a is formed by, for example, plating a sheet metal or a synthetic resin so as to cause specular reflection. In addition, it is not essential that each of the reflective surface 7a and the reflective surface 9a has a mirror surface.

第１反射部７と第２反射部９とは、別部材として構成される。第１反射部７と第２反射部９とは、第１反射部７の下部と第２反射部９の上部とが重なるように配置される。従って、実施形態１によれば、光源１１の出射した光ＬＴ０が、第１反射部７及び第２反射部９の背面側に漏れることを抑制できる。 The 1st reflection part 7 and the 2nd reflection part 9 are comprised as a separate member. The first reflecting part 7 and the second reflecting part 9 are arranged so that the lower part of the first reflecting part 7 and the upper part of the second reflecting part 9 overlap each other. Therefore, according to the first embodiment, the light LT0 emitted from the light source 11 can be prevented from leaking to the back side of the first reflecting portion 7 and the second reflecting portion 9.

第１反射部７と第２反射部９とが重なっている部分以外の部分において、水平方向に対する第２反射部９の傾斜角θｂは、水平方向に対する第１反射部７の傾斜角θａと異なる。傾斜角θａ及び傾斜角θｂの各々は、鋭角である。 In a portion other than the portion where the first reflecting portion 7 and the second reflecting portion 9 overlap, the inclination angle θb of the second reflecting portion 9 with respect to the horizontal direction is different from the inclination angle θa of the first reflecting portion 7 with respect to the horizontal direction. . Each of the inclination angle θa and the inclination angle θb is an acute angle.

すなわち、第２反射部９の傾斜は、第１反射部７の傾斜と異なる。従って、第２反射部９に基づく光源１１の光ＬＴ０の配光ＬＤ２（つまり、光ＬＴ２の照射方向）は、第１反射部７に基づく光源１１の光ＬＴ０の配光ＬＤ１（つまり、光ＬＴ１の照射方向）と異なる。つまり、光源１１の光ＬＴ０が、第２反射部９と第１反射部７とによって、互いに異なる方向に配分される。その結果、実施形態１によれば、照明器具１の高さが低い場合でも、照明器具１の設置面ＧＤ上の特定の領域に強い光が集中することを抑制できる。 That is, the inclination of the second reflecting portion 9 is different from the inclination of the first reflecting portion 7. Accordingly, the light distribution LD2 of the light LT0 of the light source 11 based on the second reflection unit 9 (that is, the irradiation direction of the light LT2) is the light distribution LD1 of the light LT0 of the light source 11 based on the first reflection unit 7 (that is, the light LT1). The irradiation direction). That is, the light LT0 of the light source 11 is distributed in different directions by the second reflecting portion 9 and the first reflecting portion 7. As a result, according to Embodiment 1, even when the height of the lighting fixture 1 is low, it can suppress that strong light concentrates on the specific area | region on the installation surface GD of the lighting fixture 1. FIG.

特に、実施形態１では、第１反射部７と第２反射部９とが重なっている部分以外の部分において、第２反射部９の傾斜角θｂは、第１反射部７の傾斜角θａよりも小さい。つまり、第２反射部９の傾斜は、第１反射部７の傾斜よりも小さい。従って、第２反射部９が反射する光ＬＴ２は、設置面ＧＤのうち照明器具１に近い側の面に照射される。一方、第１反射部７が反射する光ＬＴ１は、設置面ＧＤのうち照明器具１から遠い側の面に照射される。つまり、光源１１の光ＬＴ０が、第２反射部９と第１反射部７とによって、設置面ＧＤのうち照明器具１に近い側の面と遠い側の面とに配分される。その結果、実施形態１によれば、照明器具１の高さが低い場合でも、設置面ＧＤのうち照明器具１に近い側の面に強い光が集中することを抑制できる。照明器具１に近い側の面に強い光が集中することを抑制できると、照明器具１の高さが低い場合でも、見る者に、広い範囲に光が届いている印象を与えることができる。 In particular, in Embodiment 1, the inclination angle θb of the second reflection part 9 is greater than the inclination angle θa of the first reflection part 7 in a part other than the part where the first reflection part 7 and the second reflection part 9 overlap. Is also small. That is, the inclination of the second reflecting portion 9 is smaller than the inclination of the first reflecting portion 7. Therefore, the light LT2 reflected by the second reflecting portion 9 is irradiated on the surface of the installation surface GD that is closer to the lighting fixture 1. On the other hand, the light LT1 reflected by the first reflecting unit 7 is applied to the surface of the installation surface GD that is far from the lighting fixture 1. That is, the light LT0 of the light source 11 is distributed by the second reflecting portion 9 and the first reflecting portion 7 to a surface closer to the lighting fixture 1 and a surface farther from the installation surface GD. As a result, according to Embodiment 1, even when the height of the lighting fixture 1 is low, it is possible to suppress strong light from being concentrated on the surface of the installation surface GD that is closer to the lighting fixture 1. If strong light can be prevented from concentrating on the surface close to the luminaire 1, even if the height of the luminaire 1 is low, it is possible to give the viewer the impression that the light reaches a wide range.

次に、図３〜図５を参照して、第２反射部９の詳細を説明する。図３は、第２反射部９を示す斜視図である。図４は、第２反射部９を示す模式的断面図である。図５は、第２反射部９の一部を拡大して示す模式的断面図である。なお、図４及び図５では、図面の簡略化のため、断面を示すハッチングを省略している。 Next, details of the second reflecting portion 9 will be described with reference to FIGS. FIG. 3 is a perspective view showing the second reflecting portion 9. FIG. 4 is a schematic cross-sectional view showing the second reflecting portion 9. FIG. 5 is a schematic cross-sectional view showing a part of the second reflecting portion 9 in an enlarged manner. In FIGS. 4 and 5, hatching indicating a cross section is omitted for simplification of the drawings.

図３及び図４に示すように、第２反射部９は、複数の第１反射面２１と、複数の凹部２２とを有する。複数の第１反射面２１の各々は、光を反射する。複数の第１反射面２１の各々は、例えば、略平坦である。複数の凹部２２の各々は、第１反射面２１対して窪んでいる。複数の凹部２２は、三角格子状に配置される。なお、複数の凹部２２の配置は、三角格子状に限定されず、例えば、矩形格子状又は正方格子状であってもよい。複数の凹部２２の各々は、第２反射面２２ａを有する。複数の第２反射面２２ａの各々は、光を反射する。複数の第２反射面２２ａの各々は、例えば、略平坦である。複数の第１反射面２１と複数の第２反射面２２ａとは、反射面９ａを構成する。 As shown in FIGS. 3 and 4, the second reflecting portion 9 has a plurality of first reflecting surfaces 21 and a plurality of concave portions 22. Each of the plurality of first reflection surfaces 21 reflects light. Each of the plurality of first reflection surfaces 21 is, for example, substantially flat. Each of the plurality of recesses 22 is recessed with respect to the first reflecting surface 21. The plurality of recesses 22 are arranged in a triangular lattice shape. In addition, arrangement | positioning of the some recessed part 22 is not limited to a triangular lattice shape, For example, a rectangular lattice shape or a square lattice shape may be sufficient. Each of the plurality of recesses 22 has a second reflecting surface 22a. Each of the plurality of second reflecting surfaces 22a reflects light. Each of the plurality of second reflecting surfaces 22a is, for example, substantially flat. The plurality of first reflection surfaces 21 and the plurality of second reflection surfaces 22a constitute a reflection surface 9a.

図５に示すように、第１反射面２１は、光ＬＴ２１を第１反射角θ１で反射する。一方、凹部２２の第２反射面２２ａは、光ＬＴ２２を第２反射角θ２で反射する。第２反射角θ２は、第１反射角θ１よりも小さい。従って、第２反射面２２ａは、第１反射面２１の反射する光ＬＴ２１よりも下方に向けて光ＬＴ２２を反射する。 As shown in FIG. 5, the first reflecting surface 21 reflects the light LT21 at the first reflection angle θ1. On the other hand, the second reflection surface 22a of the recess 22 reflects the light LT22 at the second reflection angle θ2. The second reflection angle θ2 is smaller than the first reflection angle θ1. Accordingly, the second reflecting surface 22a reflects the light LT22 downward from the light LT21 reflected by the first reflecting surface 21.

第１反射角θ１は、第２反射部９の傾斜角θｂによって設定される。第２反射角θ２は、傾斜角θｘによって設定される。傾斜角θｘは、第１反射面２１に対する第２反射面２２ａの上端２２ｂからの傾斜角を示す。 The first reflection angle θ1 is set by the inclination angle θb of the second reflecting portion 9. The second reflection angle θ2 is set by the inclination angle θx. The inclination angle θx indicates an inclination angle from the upper end 22b of the second reflection surface 22a with respect to the first reflection surface 21.

以上、図５を参照して説明したように、実施形態１によれば、第２反射面２２ａの第２反射角θ２は、第１反射面２１の第１反射角θ１と異なる。従って、第２反射部９は、複数の第２反射面２２ａと複数の第１反射面２１とによって、互いに異なる配光を実現する。つまり、光源１１の光が、第２反射面２２ａと第１反射面２１とによって、互いに異なる方向に配分される。その結果、照明器具１の設置面ＧＤ上の特定の領域に強い光が集中することを更に抑制できる。 As described above with reference to FIG. 5, according to the first embodiment, the second reflection angle θ 2 of the second reflection surface 22 a is different from the first reflection angle θ 1 of the first reflection surface 21. Accordingly, the second reflecting section 9 realizes different light distributions by the plurality of second reflecting surfaces 22 a and the plurality of first reflecting surfaces 21. That is, the light from the light source 11 is distributed in different directions by the second reflecting surface 22 a and the first reflecting surface 21. As a result, it is possible to further suppress strong light from being concentrated on a specific area on the installation surface GD of the lighting fixture 1.

特に、実施形態１では、図２に示すように、第２反射部９は、第２反射部９の全体としては、設置面ＧＤのうち照明器具１に近い側の面に光ＬＴ２を照射する。加えて、図５に示すように、第２反射面２２ａの第２反射角θ２は、第１反射面２１の第１反射角θ１より小さい。従って、設置面ＧＤのうち照明器具１に近い側の面内において、第２反射面２２ａが反射する光ＬＴ２２は、照明器具１に近い側の領域に照射され、第１反射面２１が反射する光ＬＴ２１は、照明器具１から遠い側の領域に照射される。 In particular, in the first embodiment, as illustrated in FIG. 2, the second reflecting unit 9 irradiates the light LT2 on the surface of the installation surface GD closer to the lighting fixture 1 as a whole. . In addition, as shown in FIG. 5, the second reflection angle θ 2 of the second reflection surface 22 a is smaller than the first reflection angle θ 1 of the first reflection surface 21. Therefore, the light LT22 reflected by the second reflecting surface 22a in the surface on the side close to the lighting fixture 1 in the installation surface GD is irradiated to the region near the lighting fixture 1, and the first reflecting surface 21 reflects. The light LT21 is irradiated to a region far from the lighting fixture 1.

すなわち、光源１１の光が、第２反射面２２ａと第１反射面２１とによって、設置面ＧＤのうち照明器具１に近い側の面内において、照明器具１に近い側の領域と遠い側の領域とに配分される。従って、実施形態１によれば、設置面ＧＤのうち照明器具１に近い側の面内において、照明器具１に近い側の領域に強い光が集中することを抑制できる。その結果、照明器具１の高さが低い場合でも、見る者に、広い範囲に光が届いている印象を与えることができる。 That is, the light from the light source 11 is separated from the area closer to the luminaire 1 by the second reflective surface 22a and the first reflective surface 21 in the surface near the luminaire 1 in the installation surface GD. Allocated to the area. Therefore, according to Embodiment 1, it can suppress that strong light concentrates on the area | region near the lighting fixture 1 in the surface near the lighting fixture 1 among the installation surfaces GD. As a result, even when the height of the lighting fixture 1 is low, it is possible to give the viewer the impression that the light reaches a wide range.

なお、図２では、第１反射部７と第２反射部９とは、別部材で構成された。ただし、第１反射部７と第２反射部９とは、単一の部材で構成されてもよい。また、第１反射部７と第２反射部９との位置が逆であってもよい。つまり、第２反射部９が、第１反射部７よりも光源１１の近くに配置されてもよい。この場合は、第１反射部７と第２反射部９とが重なっている部分以外の部分において、第２反射部９の傾斜角θｂは、第１反射部７の傾斜角θａよりも大きい。 In addition, in FIG. 2, the 1st reflection part 7 and the 2nd reflection part 9 were comprised by the separate member. However, the 1st reflection part 7 and the 2nd reflection part 9 may be comprised by the single member. Further, the positions of the first reflecting portion 7 and the second reflecting portion 9 may be reversed. That is, the second reflection unit 9 may be disposed closer to the light source 11 than the first reflection unit 7. In this case, the inclination angle θb of the second reflection portion 9 is larger than the inclination angle θa of the first reflection portion 7 in a portion other than the portion where the first reflection portion 7 and the second reflection portion 9 overlap.

また、開口５にカバー（不図示）を配置することも可能である。カバーは、例えば、略平坦であり、透明色（有色透明又は無色透明）を有する。又は、カバーは、例えば、スプレッドレンズとしての機能を有する。つまり、カバーは、光を水平方向に広げる機能を有する。この場合は、設置面ＧＤ上で照射領域の境界が目立つことを抑制できる。又は、カバーは、例えば、光を拡散する拡散板としての機能を有する。 It is also possible to arrange a cover (not shown) in the opening 5. The cover is, for example, substantially flat and has a transparent color (colored transparent or colorless transparent). Or a cover has a function as a spread lens, for example. That is, the cover has a function of spreading light in the horizontal direction. In this case, it can suppress that the boundary of an irradiation area is conspicuous on the installation surface GD. Or a cover has a function as a diffusion plate which diffuses light, for example.

（第１変形例）
図６を参照して、実施形態１の第１変形例に係る照明器具１を説明する。第１変形例に係る照明器具１の第２反射部９が複数の凸部２３を有する点で、第１変形例は、図５を参照して説明した実施形態１に係る照明器具１と主に異なる。以下、第１変形例が、実施形態１と異なる点を主に説明する。 (First modification)
With reference to FIG. 6, the lighting fixture 1 which concerns on the 1st modification of Embodiment 1 is demonstrated. The first modified example is different from the luminaire 1 according to Embodiment 1 described with reference to FIG. 5 in that the second reflecting portion 9 of the luminaire 1 according to the first modified example has a plurality of convex portions 23. Different. Hereinafter, the difference between the first modification and the first embodiment will be mainly described.

図６は、第１変形例に係る第２反射部９の一部を拡大して示す模式的断面図である。なお、図６では、図面の簡略化のため、断面を示すハッチングを省略している。 FIG. 6 is a schematic cross-sectional view showing a part of the second reflecting portion 9 according to the first modification in an enlarged manner. In FIG. 6, hatching indicating a cross section is omitted for simplification of the drawing.

図６に示すように、第１変形例に係る第２反射部９は、図３〜図５に示す複数の凹部２２に代えて、複数の凸部２３を有する。複数の凸部２３の各々は、第１反射面２１対して突出している。複数の凸部２３の配置は、実施形態１に係る複数の凹部２２の配置と同様である。複数の凸部２３の各々は、第３反射面２３ａを有する。複数の第３反射面２３ａの各々は、光を反射する。複数の第３反射面２３ａの各々は、例えば、略平坦である。複数の第１反射面２１と複数の第３反射面２３ａとは、反射面９ａを構成する。 As shown in FIG. 6, the 2nd reflection part 9 which concerns on a 1st modification has several convex part 23 instead of the several recessed part 22 shown in FIGS. Each of the plurality of convex portions 23 protrudes from the first reflecting surface 21. The arrangement of the plurality of convex portions 23 is the same as the arrangement of the plurality of concave portions 22 according to the first embodiment. Each of the plurality of convex portions 23 has a third reflecting surface 23a. Each of the multiple third reflecting surfaces 23a reflects light. Each of the multiple third reflecting surfaces 23a is, for example, substantially flat. The plurality of first reflection surfaces 21 and the plurality of third reflection surfaces 23a constitute a reflection surface 9a.

凸部２３の第３反射面２３ａは、光ＬＴ２２を第２反射角θ２で反射する。第２反射角θ２は、第１反射角θ１よりも小さい。従って、第３反射面２３ａは、第１反射面２１の反射する光ＬＴ２１よりも下方に向けて光ＬＴ２２を反射する。第２反射角θ２は、傾斜角θｘによって設定される。傾斜角θｘは、第１反射面２１に対する第３反射面２３ａの下端２３ｂからの傾斜角を示す。 The third reflecting surface 23a of the convex portion 23 reflects the light LT22 at the second reflection angle θ2. The second reflection angle θ2 is smaller than the first reflection angle θ1. Accordingly, the third reflecting surface 23 a reflects the light LT 22 downward from the light LT 21 reflected by the first reflecting surface 21. The second reflection angle θ2 is set by the inclination angle θx. The inclination angle θx indicates an inclination angle from the lower end 23b of the third reflection surface 23a with respect to the first reflection surface 21.

以上、図６を参照して説明したように、第１変形例によれば、第３反射面２３ａの第２反射角θ２は、第１反射面２１の第１反射角θ１と異なる。従って、光源１１の光が、第３反射面２３ａと第１反射面２１とによって、互いに異なる方向に配分される。その結果、照明器具１の設置面ＧＤ上の特定の領域に強い光が集中することを抑制できる。 As described above with reference to FIG. 6, according to the first modification, the second reflection angle θ 2 of the third reflection surface 23 a is different from the first reflection angle θ 1 of the first reflection surface 21. Therefore, the light from the light source 11 is distributed in different directions by the third reflecting surface 23 a and the first reflecting surface 21. As a result, it is possible to suppress strong light from being concentrated on a specific area on the installation surface GD of the lighting fixture 1.

具体的には、第２反射角θ２が第１反射角θ１よりも小さいため、実施形態１と同様に、設置面ＧＤのうち照明器具１に近い側の面内において、第３反射面２３ａが反射する光ＬＴ２２は、照明器具１に近い側の領域に照射され、第１反射面２１が反射する光ＬＴ２１は、照明器具１から遠い側の領域に照射される。従って、第１変形例によれば、設置面ＧＤのうち照明器具１に近い側の面内において、照明器具１に近い側の領域に強い光が集中することを抑制できる。 Specifically, since the second reflection angle θ2 is smaller than the first reflection angle θ1, the third reflection surface 23a is within the surface of the installation surface GD closer to the luminaire 1 as in the first embodiment. The reflected light LT22 is applied to a region near the lighting fixture 1, and the light LT21 reflected by the first reflecting surface 21 is applied to a region far from the lighting fixture 1. Therefore, according to the 1st modification, it can suppress that strong light concentrates on the area | region near the lighting fixture 1 in the surface near the lighting fixture 1 among the installation surfaces GD.

（第２変形例）
図７を参照して、実施形態１の第２変形例に係る照明器具１を説明する。第２変形例に係る照明器具１において第２反射部９の凸部２４の反射角が大きい点で、第２変形例は、図６を参照して説明した第１変形例に係る照明器具１と主に異なる。以下、第２変形例が、第１変形例と異なる点を主に説明する。 (Second modification)
With reference to FIG. 7, the lighting fixture 1 which concerns on the 2nd modification of Embodiment 1 is demonstrated. In the lighting fixture 1 according to the second modified example, the second modified example is a lighting fixture 1 according to the first modified example described with reference to FIG. And mainly different. Hereinafter, the difference between the second modification and the first modification will be mainly described.

図７は、第２変形例に係る第２反射部９の一部を拡大して示す模式的断面図である。なお、図７では、図面の簡略化のため、断面を示すハッチングを省略している。 FIG. 7 is a schematic cross-sectional view showing a part of the second reflecting portion 9 according to the second modification in an enlarged manner. In FIG. 7, hatching indicating a cross section is omitted for simplification of the drawing.

図７に示すように、第２変形例に係る第２反射部９は、図６に示す複数の凸部２３に代えて、複数の凸部２４を有する。複数の凸部２４の各々は、第１反射面２１対して突出している。複数の凸部２４の配置は、第１変形例に係る複数の凸部２３の配置と同様である。複数の凸部２４の各々は、第３反射面２４ａを有する。複数の第３反射面２４ａの各々は、光を反射する。複数の第３反射面２４ａの各々は、例えば、略平坦である。複数の第１反射面２１と複数の第３反射面２４ａとは、反射面９ａを構成する。 As shown in FIG. 7, the second reflecting portion 9 according to the second modification has a plurality of convex portions 24 instead of the plurality of convex portions 23 shown in FIG. 6. Each of the plurality of convex portions 24 protrudes from the first reflecting surface 21. The arrangement of the plurality of convex portions 24 is the same as the arrangement of the plurality of convex portions 23 according to the first modification. Each of the plurality of convex portions 24 has a third reflecting surface 24a. Each of the plurality of third reflecting surfaces 24a reflects light. Each of the plurality of third reflecting surfaces 24a is, for example, substantially flat. The plurality of first reflection surfaces 21 and the plurality of third reflection surfaces 24a constitute a reflection surface 9a.

凸部２４の第３反射面２４ａは、光ＬＴ２２を第３反射角θ３で反射する。第３反射角θ３は、第１反射角θ１よりも大きい。従って、第３反射面２４ａは、第１反射面２１の反射する光ＬＴ２１よりも上方に向けて光ＬＴ２２を反射する。第３反射角θ３は、傾斜角θｙによって設定される。傾斜角θｙは、第１反射面２１に対する第３反射面２４ａの上端２４ｂからの傾斜角を示す。 The third reflection surface 24a of the convex portion 24 reflects the light LT22 at the third reflection angle θ3. The third reflection angle θ3 is larger than the first reflection angle θ1. Therefore, the third reflecting surface 24a reflects the light LT22 upward from the light LT21 reflected by the first reflecting surface 21. The third reflection angle θ3 is set by the inclination angle θy. The inclination angle θy indicates an inclination angle from the upper end 24 b of the third reflection surface 24 a with respect to the first reflection surface 21.

以上、図７を参照して説明したように、第２変形例によれば、第３反射面２４ａの第３反射角θ３は、第１反射面２１の第１反射角θ１と異なる。従って、光源１１の光が、第３反射面２４ａと第１反射面２１とによって、互いに異なる方向に配分される。その結果、照明器具１の設置面ＧＤ上の特定の領域に強い光が集中することを抑制できる。 As described above with reference to FIG. 7, according to the second modification, the third reflection angle θ 3 of the third reflection surface 24 a is different from the first reflection angle θ 1 of the first reflection surface 21. Accordingly, the light from the light source 11 is distributed in different directions by the third reflecting surface 24 a and the first reflecting surface 21. As a result, it is possible to suppress strong light from being concentrated on a specific area on the installation surface GD of the lighting fixture 1.

具体的には、第３反射角θ３が第１反射角θ１よりも大きいため、設置面ＧＤのうち照明器具１に近い側の面内において、第３反射面２４ａが反射する光ＬＴ２２は、照明器具１から遠い側の領域に照射され、第１反射面２１が反射する光ＬＴ２１は、照明器具１から近い側の領域に照射される。従って、第２変形例によれば、設置面ＧＤのうち照明器具１に近い側の面内において、照明器具１に近い側の領域に強い光が集中することを抑制できる。 Specifically, since the third reflection angle θ3 is larger than the first reflection angle θ1, the light LT22 reflected by the third reflection surface 24a within the surface of the installation surface GD closer to the lighting fixture 1 is illuminated. The light LT21 that is irradiated on the region far from the fixture 1 and reflected by the first reflecting surface 21 is irradiated on the region near the lighting fixture 1. Therefore, according to the 2nd modification, it can control that strong light concentrates on the field near the lighting fixture 1 in the side near the lighting fixture 1 among the installation surfaces GD.

（第３変形例）
図８を参照して、実施形態１の第３変形例に係る照明器具１を説明する。第３変形例に係る照明器具１において第２反射部９の凹部２５の反射角が大きい点で、第３変形例は、図５を参照して説明した実施形態１に係る照明器具１と主に異なる。以下、第３変形例が、実施形態１と異なる点を主に説明する。 (Third Modification)
With reference to FIG. 8, the lighting fixture 1 which concerns on the 3rd modification of Embodiment 1 is demonstrated. In the lighting fixture 1 according to the third modified example, the third modified example is different from the lighting fixture 1 according to the first embodiment described with reference to FIG. 5 in that the reflection angle of the concave portion 25 of the second reflecting portion 9 is large. Different. Hereinafter, the difference between the third modification and the first embodiment will be mainly described.

図８は、第３変形例に係る第２反射部９の一部を拡大して示す模式的断面図である。なお、図８では、図面の簡略化のため、断面を示すハッチングを省略している。 FIG. 8 is a schematic cross-sectional view showing an enlarged part of the second reflecting portion 9 according to the third modification. In FIG. 8, hatching indicating a cross section is omitted for simplification of the drawing.

図８に示すように、第３変形例に係る第２反射部９は、図５に示す複数の凹部２２に代えて、複数の凹部２５を有する。複数の凹部２５の各々は、第１反射面２１対して窪んでいる。複数の凹部２５の配置は、実施形態１に係る複数の凹部２２の配置と同様である。複数の凹部２５の各々は、第２反射面２５ａを有する。複数の第２反射面２５ａの各々は、光を反射する。複数の第２反射面２５ａの各々は、例えば、略平坦である。複数の第１反射面２１と複数の第２反射面２５ａとは、反射面９ａを構成する。 As shown in FIG. 8, the second reflecting portion 9 according to the third modification has a plurality of recesses 25 instead of the plurality of recesses 22 shown in FIG. 5. Each of the plurality of recesses 25 is recessed with respect to the first reflecting surface 21. The arrangement of the plurality of recesses 25 is the same as the arrangement of the plurality of recesses 22 according to the first embodiment. Each of the plurality of recesses 25 has a second reflecting surface 25a. Each of the plurality of second reflecting surfaces 25a reflects light. Each of the plurality of second reflecting surfaces 25a is, for example, substantially flat. The plurality of first reflection surfaces 21 and the plurality of second reflection surfaces 25a constitute a reflection surface 9a.

凹部２５の第２反射面２５ａは、光ＬＴ２２を第３反射角θ３で反射する。第３反射角θ３は、第１反射角θ１よりも大きい。従って、第２反射面２５ａは、第１反射面２１の反射する光ＬＴ２１よりも上方に向けて光ＬＴ２２を反射する。第３反射角θ３は、傾斜角θｙによって設定される。傾斜角θｙは、第１反射面２１に対する第２反射面２５ａの下端２５ｂからの傾斜角を示す。 The second reflection surface 25a of the recess 25 reflects the light LT22 at the third reflection angle θ3. The third reflection angle θ3 is larger than the first reflection angle θ1. Accordingly, the second reflecting surface 25a reflects the light LT22 upward from the light LT21 reflected by the first reflecting surface 21. The third reflection angle θ3 is set by the inclination angle θy. The inclination angle θy indicates an inclination angle from the lower end 25b of the second reflection surface 25a with respect to the first reflection surface 21.

以上、図８を参照して説明したように、第３変形例によれば、第２反射面２５ａの第３反射角θ３は、第１反射面２１の第１反射角θ１と異なる。従って、光源１１の光が、第２反射面２５ａと第１反射面２１とによって、互いに異なる方向に配分される。その結果、照明器具１の設置面ＧＤ上の特定の領域に強い光が集中することを抑制できる。 As described above with reference to FIG. 8, according to the third modification, the third reflection angle θ 3 of the second reflection surface 25 a is different from the first reflection angle θ 1 of the first reflection surface 21. Therefore, the light from the light source 11 is distributed in different directions by the second reflecting surface 25 a and the first reflecting surface 21. As a result, it is possible to suppress strong light from being concentrated on a specific area on the installation surface GD of the lighting fixture 1.

具体的には、第３反射角θ３が第１反射角θ１よりも大きいため、設置面ＧＤのうち照明器具１に近い側の面内において、第２反射面２５ａが反射する光ＬＴ２２は、照明器具１から遠い側の領域に照射され、第１反射面２１が反射する光ＬＴ２１は、照明器具１から近い側の領域に照射される。従って、第２変形例によれば、設置面ＧＤのうち照明器具１に近い側の面内において、照明器具１に近い側の領域に強い光が集中することを抑制できる。 Specifically, since the third reflection angle θ3 is larger than the first reflection angle θ1, the light LT22 reflected by the second reflection surface 25a within the surface of the installation surface GD closer to the lighting fixture 1 is illuminated. The light LT21 that is irradiated to the region far from the fixture 1 and reflected by the first reflecting surface 21 is irradiated to the region closer to the lighting fixture 1. Therefore, according to the 2nd modification, it can control that strong light concentrates on the field near the lighting fixture 1 in the side near the lighting fixture 1 among the installation surfaces GD.

（実施形態２）
図９を参照して、本発明の実施形態２に係る照明器具１Ａを説明する。実施形態２に係る照明器具１Ａが略平板状の第２反射部９０を備えている点で、実施形態２は実施形態１と主に異なる。以下、実施形態２が実施形態１と異なる点を主に説明する。 (Embodiment 2)
With reference to FIG. 9, 1 A of lighting fixtures concerning Embodiment 2 of this invention are demonstrated. The second embodiment is mainly different from the first embodiment in that the luminaire 1A according to the second embodiment includes a substantially flat second reflecting portion 90. Hereinafter, the points of the second embodiment different from the first embodiment will be mainly described.

図９は、実施形態２に係る照明器具１Ａを示す模式的縦断面図である。なお、図９では、図面の簡略化のため、断面を示すハッチングを適宜省略している。 FIG. 9 is a schematic longitudinal sectional view showing a lighting fixture 1A according to the second embodiment. In FIG. 9, hatching indicating a cross section is appropriately omitted for simplification of the drawing.

図９に示すように、照明器具１Ａは、図２を参照して説明した照明器具１の第２反射部９に代えて、第２反射部９０を備える。 As shown in FIG. 9, the lighting fixture 1 A includes a second reflecting portion 90 instead of the second reflecting portion 9 of the lighting fixture 1 described with reference to FIG. 2.

第１反射部７の構成は、図２を参照して説明した第１反射部７の構成と同様である。第１反射部７は、第２反射部９０よりも光源１１から離れて配置される。 The configuration of the first reflection unit 7 is the same as the configuration of the first reflection unit 7 described with reference to FIG. The first reflecting unit 7 is arranged farther from the light source 11 than the second reflecting unit 90.

第２反射部９０は、開口５に向けて光ＬＴ２を反射する。具体的には、第２反射部９０は、光源１１の出射した光ＬＴ０の一部を光ＬＴ２として開口５に向けて反射する。第２反射部９０は、略平板状であり、略平坦な反射面９０ａを有する。従って、湾曲構造と比較して、第２反射部９０の製造コストを低減できる。反射面９０ａは、例えば、光ＬＴ２を鏡面反射する。反射面９０ａは、反射面７ａと同様にして形成される。第２反射部９０は支持体１３に固定される。なお、反射面９０ａは、鏡面を有することは必須ではない。 The second reflecting unit 90 reflects the light LT2 toward the opening 5. Specifically, the second reflecting unit 90 reflects a part of the light LT0 emitted from the light source 11 toward the opening 5 as the light LT2. The 2nd reflection part 90 is substantially flat form, and has the substantially flat reflective surface 90a. Therefore, the manufacturing cost of the second reflecting portion 90 can be reduced as compared with the curved structure. The reflective surface 90a reflects the light LT2 in a specular manner, for example. The reflective surface 90a is formed in the same manner as the reflective surface 7a. The second reflecting portion 90 is fixed to the support 13. In addition, it is not essential that the reflective surface 90a has a mirror surface.

水平方向に対する第２反射部９０の傾斜角θｂは、水平方向に対する第１反射部７の傾斜角θａと異なる。傾斜角θａ及び傾斜角θｂの各々は、鋭角である。 The inclination angle θb of the second reflection unit 90 with respect to the horizontal direction is different from the inclination angle θa of the first reflection unit 7 with respect to the horizontal direction. Each of the inclination angle θa and the inclination angle θb is an acute angle.

すなわち、第２反射部９０の傾斜は、第１反射部７の傾斜と異なる。従って、第２反射部９０に基づく光源１１の光ＬＴ０の配光ＬＤ２（つまり、光ＬＴ２の照射方向）は、第１反射部７に基づく光源１１の光ＬＴ０の配光ＬＤ１（つまり、光ＬＴ１の照射方向）と異なる。つまり、光源１１の光ＬＴ０が、第２反射部９０と第１反射部７とによって、互いに異なる方向に配分される。その結果、実施形態２によれば、照明器具１Ａの高さが低い場合でも、照明器具１Ａの設置面ＧＤ上の特定の領域に強い光が集中することを抑制できる。 That is, the inclination of the second reflection unit 90 is different from the inclination of the first reflection unit 7. Therefore, the light distribution LD2 of the light LT0 of the light source 11 based on the second reflection unit 90 (that is, the irradiation direction of the light LT2) is the light distribution LD1 of the light LT0 of the light source 11 based on the first reflection unit 7 (that is, the light LT1). (Irradiation direction). That is, the light LT0 of the light source 11 is distributed in different directions by the second reflecting unit 90 and the first reflecting unit 7. As a result, according to the second embodiment, even when the height of the lighting fixture 1A is low, strong light can be prevented from concentrating on a specific region on the installation surface GD of the lighting fixture 1A.

特に、実施形態２では、第２反射部９０の傾斜角θｂは、第１反射部７の傾斜角θａよりも大きい。つまり、第２反射部９０の傾斜は、第１反射部７の傾斜よりも大きい。従って、第２反射部９０が反射する光ＬＴ２は、設置面ＧＤのうち照明器具１Ａから遠い側の面に照射される。一方、第１反射部７が反射する光ＬＴ１は、設置面ＧＤのうち照明器具１Ａに近い側の面に照射される。つまり、光源１１の光ＬＴ０が、第２反射部９０と第１反射部７とによって、設置面ＧＤのうち照明器具１Ａに遠い側の面と近い側の面とに配分される。その結果、実施形態２によれば、照明器具１Ａの高さが低い場合でも、設置面ＧＤのうち照明器具１Ａに近い側の面に強い光が集中することを抑制できる。照明器具１Ａに近い側の面に強い光が集中することを抑制できると、照明器具１Ａの高さが低い場合でも、見る者に、広い範囲に光が届いている印象を与えることができる。 In particular, in the second embodiment, the inclination angle θb of the second reflection unit 90 is larger than the inclination angle θa of the first reflection unit 7. That is, the inclination of the second reflection unit 90 is larger than the inclination of the first reflection unit 7. Therefore, the light LT2 reflected by the second reflecting unit 90 is irradiated on the surface of the installation surface GD that is far from the lighting fixture 1A. On the other hand, the light LT1 reflected by the first reflecting portion 7 is irradiated on the surface of the installation surface GD that is closer to the lighting fixture 1A. That is, the light LT0 of the light source 11 is distributed by the second reflecting unit 90 and the first reflecting unit 7 to the surface on the side farther from the lighting fixture 1A on the installation surface GD. As a result, according to the second embodiment, even when the height of the lighting fixture 1A is low, it is possible to suppress strong light from being concentrated on the surface of the installation surface GD that is closer to the lighting fixture 1A. If strong light can be prevented from concentrating on the surface close to the lighting fixture 1A, even if the height of the lighting fixture 1A is low, the viewer can be given an impression that the light reaches a wide range.

なお、図９では、第１反射部７と第２反射部９０とは、別部材で構成された。ただし、第１反射部７と第２反射部９０とは、単一の部材で構成されてもよい。また、第１反射部７と第２反射部９０との位置が逆であってもよい。つまり、第２反射部９０が、第１反射部７よりも光源１１から離れて配置されてもよい。この場合は、第２反射部９の傾斜角θｂは、第１反射部７の傾斜角θａよりも小さい。また、開口５にカバー（不図示）を配置することも可能である。カバーは、図２を参照して説明した開口５に配置可能なカバーと同様である。 In addition, in FIG. 9, the 1st reflection part 7 and the 2nd reflection part 90 were comprised by the separate member. However, the 1st reflection part 7 and the 2nd reflection part 90 may be comprised by the single member. Further, the positions of the first reflecting portion 7 and the second reflecting portion 90 may be reversed. That is, the second reflection unit 90 may be arranged farther from the light source 11 than the first reflection unit 7. In this case, the inclination angle θb of the second reflecting portion 9 is smaller than the inclination angle θa of the first reflecting portion 7. It is also possible to arrange a cover (not shown) in the opening 5. The cover is the same as the cover that can be disposed in the opening 5 described with reference to FIG.

以上、図面を参照しながら本発明の実施形態について説明した。但し、本発明は、上記の実施形態に限られるものではなく、その要旨を逸脱しない範囲で種々の態様において実施することが可能である。また、上記の実施形態に開示されている複数の構成要素を適宜組み合わせることによって、種々の発明の形成が可能である。例えば、実施形態に示される全構成要素から幾つかの構成要素を削除してもよい。さらに、異なる実施形態にわたる構成要素を適宜組み合わせてもよい。図面は、理解しやすくするために、それぞれの構成要素を主体に模式的に示しており、図示された各構成要素の厚み、長さ、個数、間隔等は、図面作成の都合上から実際とは異なる場合もある。また、上記の実施形態で示す各構成要素の材質、形状、寸法等は一例であって、特に限定されるものではなく、本発明の効果から実質的に逸脱しない範囲で種々の変更が可能である。 The embodiments of the present invention have been described above with reference to the drawings. However, the present invention is not limited to the above-described embodiment, and can be implemented in various modes without departing from the gist thereof. In addition, various inventions can be formed by appropriately combining a plurality of components disclosed in the above embodiments. For example, some components may be deleted from all the components shown in the embodiment. Furthermore, constituent elements over different embodiments may be appropriately combined. In order to facilitate understanding, the drawings schematically show each component as a main component, and the thickness, length, number, interval, etc. of each component shown in the drawings are actual for convenience of drawing. May be different. In addition, the material, shape, dimensions, and the like of each component shown in the above embodiment are merely examples, and are not particularly limited, and various changes can be made without departing from the effects of the present invention. is there.

本発明は、照明器具を提供するものであり、産業上の利用可能性を有する。 The present invention provides a lighting apparatus and has industrial applicability.

１、１Ａ照明器具
５開口
７第１反射部
９、９０第２反射部
１１光源
２１第１反射面
２２、２５凹部
２２ａ、２５ａ第２反射面
２３、２４凸部
２３ａ、２４ａ第３反射面 DESCRIPTION OF SYMBOLS 1, 1A Lighting fixture 5 Opening 7 1st reflection part 9, 90 2nd reflection part 11 Light source 21 1st reflection surface 22, 25 Concave part 22a, 25a 2nd reflection surface 23, 24 Convex part 23a, 24a 3rd reflection surface

Claims

A housing having an opening;
A first reflecting portion that reflects light toward the opening;
A second reflecting portion that reflects light toward the opening;
A light source that is located below the first reflection unit and the second reflection unit and emits light toward the first reflection unit and the second reflection unit;
The light distribution of the light of the light source based on the second reflection unit is different from the light distribution of the light of the light source based on the first reflection unit.

The second reflecting portion is
A plurality of first reflecting surfaces that reflect light;
A plurality of recesses each recessed with respect to the first reflecting surface;
Each of these recessed parts is a lighting fixture of Claim 1 which has the 2nd reflective surface which reflects light.

The second reflecting portion is
A plurality of first reflecting surfaces that reflect light;
A plurality of protrusions each protruding from the first reflecting surface;
Each of these convex parts is a lighting fixture of Claim 1 which has the 3rd reflective surface which reflects light.

The lighting apparatus according to any one of claims 1 to 3, wherein the second reflecting portion is curved in a convex shape in a direction away from the light source.

The lighting fixture according to any one of claims 1 to 4, wherein the first reflecting portion is convexly curved in a direction away from the light source.