JP7105617B2 - lighting equipment - Google Patents

lighting equipment Download PDF

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JP7105617B2
JP7105617B2 JP2018103765A JP2018103765A JP7105617B2 JP 7105617 B2 JP7105617 B2 JP 7105617B2 JP 2018103765 A JP2018103765 A JP 2018103765A JP 2018103765 A JP2018103765 A JP 2018103765A JP 7105617 B2 JP7105617 B2 JP 7105617B2
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reflecting
light
lighting fixture
reflector
reflection
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JP2019207830A (en
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守 寺田
洋次郎 幅多
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Koizumi Lighting Technology Corp
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Koizumi Lighting Technology Corp
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Description

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

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 Literature 1 includes a tubular lower pole, a tubular 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 lighting fixture described in Patent Literature 1, when the lighting fixture irradiates the ground (surface on which the lighting fixture is installed) with light, strong light is concentrated in a region close to the lighting fixture. That is, there is an illuminance peak 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 lighting fixture and the ground is shortened, so the illuminance peak becomes noticeable. As a result, the viewer is given the impression that the light is not spread out.

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 fixture capable of suppressing concentration of strong light in a specific area on the installation surface of the lighting fixture even when the height of the lighting fixture 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。 A lighting fixture disclosed in the present application includes a housing, a first reflector, a second reflector, and a light source. The housing has an opening. The first reflector reflects light toward the opening. The second reflector reflects light toward the opening. The light source is positioned below the first reflecting section and the second reflecting section, and emits light toward the first reflecting section and the second reflecting section. The light distribution of the light source based on the second reflector is different from the light distribution of the light source based on the first reflector.

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 section has a plurality of first reflecting surfaces that reflect light and a plurality of recesses. Each of the plurality of concave portions is preferably recessed with respect to the first reflecting surface. Each of the plurality of concave portions 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 has a plurality of first reflecting surfaces that reflect light and a plurality of convex portions. It is preferable that each of the plurality of convex portions protrude 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 section is convexly curved 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 section is convexly curved 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。BRIEF DESCRIPTION OF THE DRAWINGS 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 fixture 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。4 is a perspective 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反射部を示す模式的断面図である。4 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。4 is a schematic cross-sectional view showing an enlarged part of the second reflecting portion of the lighting fixture according to Embodiment 1. FIG. 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. 7 is a schematic cross-sectional view showing an enlarged part of a second reflecting portion of the lighting fixture according to the first modified example of the first embodiment; 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。FIG. 11 is a schematic cross-sectional view showing an enlarged part of a second reflecting portion of the lighting fixture according to the second modified example of the first embodiment; 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. 11 is a schematic cross-sectional view showing an enlarged part of a second reflecting portion of a lighting fixture according to a third modified example of Embodiment 1; 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。Fig. 2 is a schematic longitudinal sectional view showing a lighting fixture according to Embodiment 2 of the present 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。 BEST MODE FOR CARRYING OUT THE INVENTION 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 will not be repeated. Also, in the drawing, the X-axis, Y-axis, and Z-axis of the three-dimensional orthogonal coordinate system are shown as appropriate for easy understanding. The X and Y axes are horizontally parallel, and the Z axis is vertically parallel. 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)
A lighting fixture 1 according to a first embodiment of the present invention will be described with reference to FIGS. 1 to 5. FIG. First, a lighting fixture 1 will be described with reference to FIG. FIG. 1 is a perspective view showing a lighting fixture 1 according to Embodiment 1. FIG. As shown in FIG. 1, the lighting fixture 1 is installed on 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 has a housing 3 . In Embodiment 1, the housing 3 has a hollow, substantially rectangular parallelepiped shape. The housing 3 has an opening 5 . The opening 5 has a substantially rectangular shape. The shapes of the housing 3 and the opening 5 are not particularly limited as long as the lighting device 1 can emit light toward the installation surface GD.

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 device 1. FIG. In addition, in FIG. 2, for simplification of the drawing, hatching indicating a cross section is appropriately omitted.

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 luminaire 1 further includes a first reflector 7 , a second reflector 9 , a light source 11 and a support 13 . The housing 3 accommodates the first reflector 7 , the second reflector 9 , the light source 11 and the support 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 . A 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（Ｌｉｇｈｔ Ｅｍｉｔｔｉｎｇ Ｄｉｏｄｅ）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 positioned below the first reflector 7 and the second reflector 9 . The light source 11 emits light LT0 toward the first reflecting section 7 and the second reflecting section 9 . Specifically, the light source 11 includes a light emitter 11a. The light emitter 11a emits light. The light emitter 11a includes one or more light emitting elements. The light emitting element is, for example, an LED (Light Emitting Diode). Note that the light emitter 11a may include a fluorescent lamp or an incandescent lamp 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 reflector 7 reflects the light LT1 toward the opening 5. As shown in FIG. Specifically, the first reflecting section 7 reflects 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 mirror-reflects the light LT1, for example.

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 reflector 7 is fixed to the support 13 . The first reflecting portion 7 has a substantially curved shape in a cross-sectional view. Specifically, the first reflecting portion 7 is convexly curved in a direction away from the opening 5 . That is, the first reflecting portion 7 is convexly curved in the direction away from the light source 11 . The first reflector 7 is arranged closer to the light source 11 than the second reflector 9 is.

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 reflector 9 reflects the light LT2 toward the opening 5. As shown in FIG. Specifically, the second reflecting section 9 reflects 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. The reflecting surface 9a mirror-reflects the light LT2, for example.

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 reflector 9 is fixed to the support 13 . The second reflecting portion 9 has a substantially curved shape in a cross-sectional view. Specifically, the second reflecting portion 9 is convexly curved in a direction away from the opening 5 . That is, the second reflecting portion 9 is convexly curved in the direction away from the light source 11 . The second reflector 9 is arranged farther from the light source 11 than the first reflector 7 is.

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 coating a sheet metal or a synthetic resin with paint that causes specular reflection. Alternatively, each of the reflecting surface 7a and the reflecting surface 9a is formed, for example, by plating a sheet metal or a synthetic resin so as to cause specular reflection. In addition, it is not essential that each of the reflecting surfaces 7a and 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 first reflecting portion 7 and the second reflecting portion 9 are configured as separate members. The first reflecting portion 7 and the second reflecting portion 9 are arranged so that the lower portion of the first reflecting portion 7 and the upper portion of the second reflecting portion 9 overlap. Therefore, according to the first embodiment, it is possible to prevent the light LT0 emitted from the light source 11 from leaking to the rear side of the first reflecting section 7 and the second reflecting section 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 tilt angle θa and the tilt 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 . Therefore, the light distribution LD2 of the light LT0 of the light source 11 based on the second reflecting section 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 reflecting section 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 section 9 and the first reflecting section 7 . As a result, according to the first embodiment, even if the height of the lighting fixture 1 is low, it is possible to suppress concentration of strong light on a specific area on the installation surface GD of the lighting fixture 1 .

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 portion 9 is greater than the inclination angle θa of the first reflection portion 7 at portions other than the portion where the first reflection portion 7 and the second reflection portion 9 overlap. is also small. In other words, 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 to 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 portion 7 is irradiated onto the surface of the installation surface GD farther from the lighting device 1 . In other words, the light LT0 of the light source 11 is distributed by the second reflecting portion 9 and the first reflecting portion 7 to the surface closer to the lighting fixture 1 and the surface farther from the installation surface GD. As a result, according to the first embodiment, even if the height of the lighting fixture 1 is low, it is possible to suppress the concentration of strong light on the surface of the installation surface GD closer to the lighting fixture 1 . If it is possible to suppress the concentration of strong light on the surface closer to the lighting fixture 1, even if the height of the lighting fixture 1 is low, the viewer can be given 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, the details of the second reflector 9 will be described with reference to FIGS. 3 to 5. FIG. FIG. 3 is a perspective view showing the second reflector 9. As shown in FIG. FIG. 4 is a schematic cross-sectional view showing the second reflector 9. As shown in FIG. FIG. 5 is a schematic cross-sectional view showing an enlarged part of the second reflecting section 9. As shown in FIG. In addition, 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 section 9 has a plurality of first reflecting surfaces 21 and a plurality of recesses 22 . Each of the plurality of first reflecting surfaces 21 reflects light. Each of the multiple first reflecting surfaces 21 is, for example, substantially flat. Each of the recesses 22 is recessed with respect to the first reflecting surface 21 . The plurality of recesses 22 are arranged in a triangular lattice. Note that the arrangement of the plurality of recesses 22 is not limited to a triangular lattice pattern, and may be, for example, a rectangular lattice pattern or a square lattice pattern. 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 reflecting surfaces 21 and the plurality of second reflecting surfaces 22a constitute a reflecting 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 reflecting surface 22a of the concave portion 22 reflects the light LT22 at the second reflection angle θ2. The second angle of reflection θ2 is smaller than the first angle of reflection θ1. Therefore, 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 reflection portion 9 . The second reflection angle θ2 is set by the tilt angle θx. The tilt angle θx indicates the tilt angle from the upper end 22b of the second reflecting surface 22a with respect to the first reflecting 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 angle of reflection θ2 of the second reflecting surface 22a is different from the first angle of reflection θ1 of the first reflecting surface 21 . Therefore, the second reflecting section 9 achieves different light distributions with 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 concentration of strong light on a specific area on the installation surface GD of the lighting device 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 shown in FIG. 2, the second reflector 9 as a whole irradiates the surface of the installation surface GD closer to the lighting fixture 1 with the light LT2. . In addition, as shown in FIG. 5, the second reflection angle .theta.2 of the second reflection surface 22a is smaller than the first reflection angle .theta.1 of the first reflection surface 21a. Therefore, the light LT22 reflected by the second reflecting surface 22a in the surface of the installation surface GD closer to the lighting device 1 is irradiated to the area closer to the lighting device 1, and is reflected by the first reflecting surface 21. The light LT21 is applied to an area 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 reflected by the second reflecting surface 22a and the first reflecting surface 21 between the area closer to the lighting apparatus 1 and the area farther from the lighting apparatus 1 in the surface of the installation surface GD closer to the lighting apparatus 1. distributed between regions. Therefore, according to the first embodiment, it is possible to suppress the concentration of strong light in the area near the lighting fixture 1 in the installation surface GD near the lighting fixture 1 . As a result, even if the height of the lighting fixture 1 is low, the viewer can be given 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 first reflecting portion 7 and the second reflecting portion 9 are configured by separate members. However, the first reflecting section 7 and the second reflecting section 9 may be configured by a single member. Also, the positions of the first reflecting portion 7 and the second reflecting portion 9 may be reversed. That is, the second reflector 9 may be arranged closer to the light source 11 than the first reflector 7 is. 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 at portions 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) over the opening 5 . The cover is, for example, substantially flat and has a transparent color (colored transparent or colorless transparent). Alternatively, the cover functions as a spread lens, for example. That is, the cover has the function of spreading the light horizontally. In this case, it is possible to suppress conspicuousness of the boundary of the irradiation area on the installation surface GD. Alternatively, the cover functions as a diffusion plate that 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)
A lighting fixture 1 according to a first modification of the first embodiment will be described with reference to FIG. In that the second reflecting portion 9 of the lighting fixture 1 according to the first modified example has a plurality of convex portions 23, the first modified example is different from the lighting fixture 1 according to Embodiment 1 described with reference to FIG. different. Differences of the first modification from the first embodiment will be mainly described below.

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 an enlarged part of the second reflecting section 9 according to the first modified example. In addition, in FIG. 6, the hatching which shows a cross section is abbreviate|omitted for the simplification of 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 second reflecting portion 9 according to the first modification has a plurality of convex portions 23 instead of the plurality of concave portions 22 shown in FIGS. Each of the multiple convex portions 23 protrudes with respect to the first reflecting surface 21 . The arrangement of the plurality of protrusions 23 is the same as the arrangement of the plurality of recesses 22 according to the first embodiment. Each of the plurality of convex portions 23 has a third reflecting surface 23a. Each of the plurality of third reflecting surfaces 23a reflects light. Each of the multiple third reflecting surfaces 23a is, for example, substantially flat. The plurality of first reflecting surfaces 21 and the plurality of third reflecting surfaces 23a constitute a reflecting 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 angle of reflection θ2 is smaller than the first angle of reflection θ1. Therefore, the third reflecting surface 23 a reflects the light LT22 downward from the light LT21 reflected by the first reflecting surface 21 . The second reflection angle θ2 is set by the tilt angle θx. The tilt angle θx indicates the tilt angle from the lower end 23b of the third reflecting surface 23a with respect to the first reflecting 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 angle of reflection θ2 of the third reflecting surface 23a is different from the first angle of reflection θ1 of the first reflecting 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 prevent strong light from concentrating on a specific area on the installation surface GD of the lighting device 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 angle of reflection θ2 is smaller than the first angle of reflection θ1, the third reflection surface 23a is located on the side of the installation surface GD closer to the lighting fixture 1, as in the first embodiment. The reflected light LT22 is applied to a region closer to the lighting fixture 1 , and the light LT21 reflected by the first reflecting surface 21 is applied to a region farther from the lighting fixture 1 . Therefore, according to the first modified example, it is possible to suppress the concentration of strong light in the area nearer to the lighting fixture 1 in the surface of the installation surface GD closer to the lighting fixture 1 .

（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)
A lighting fixture 1 according to a second modification of the first embodiment will be described with reference to FIG. In the lighting fixture 1 according to the second modified example, the angle of reflection of the projection 24 of the second reflecting part 9 is large. differ mainly from Hereinafter, the differences of the second modified example from the first modified example 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 an enlarged part of the second reflecting section 9 according to the second modification. In addition, in FIG. 7, the hatching which shows a cross section is abbreviate|omitted for the simplification of 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. Each of the plurality of convex portions 24 protrudes with respect to the first reflecting surface 21 . The arrangement of the plurality of protrusions 24 is the same as the arrangement of the plurality of protrusions 23 according to the first modified example. 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 reflecting surfaces 21 and the plurality of third reflecting surfaces 24a constitute a reflecting 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 reflecting surface 24a of the convex portion 24 reflects the light LT22 at a third reflection angle θ3. The third angle of reflection θ3 is greater than the first angle of reflection 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 tilt angle θy. The tilt angle θy indicates the tilt angle from the upper end 24b of the third reflecting surface 24a with respect to the first reflecting surface 21. As shown in FIG.

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 modified example, the third reflection angle θ3 of the third reflection surface 24a is different from the first reflection angle θ1 of the first reflection surface 21 . Therefore, 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 prevent strong light from concentrating on a specific area on the installation surface GD of the lighting device 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 angle of reflection θ3 is larger than the first angle of reflection θ1, the light LT22 reflected by the third reflection surface 24a in the surface of the installation surface GD closer to the lighting device 1 is The light LT21 emitted to the area far from the fixture 1 and reflected by the first reflecting surface 21 is emitted to the area close to the lighting fixture 1 . Therefore, according to the second modification, it is possible to suppress the concentration of strong light in the area near the lighting fixture 1 in the surface of the installation surface GD that is closer to the lighting fixture 1 .

（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)
A lighting fixture 1 according to a third modification of the first embodiment will be described with reference to FIG. In the lighting fixture 1 according to the third modified example, the angle of reflection of the concave portion 25 of the second reflecting portion 9 is large. different. In the following, differences of the third modification from 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 section 9 according to the third modification. In addition, in FIG. 8, the hatching which shows a cross section is abbreviate|omitted for the simplification of 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 reflector 9 according to the third modification has a plurality of recesses 25 instead of the plurality of recesses 22 shown in FIG. Each of the 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 reflecting surfaces 21 and the plurality of second reflecting surfaces 25a constitute a reflecting 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 reflecting surface 25a of the concave portion 25 reflects the light LT22 at a third reflection angle θ3. The third angle of reflection θ3 is greater than the first angle of reflection θ1. Therefore, 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 tilt angle θy. The tilt angle θy indicates the tilt angle from the lower end 25b of the second reflecting surface 25a with respect to the first reflecting 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 θ3 of the second reflection surface 25a is different from the first reflection angle θ1 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 prevent strong light from concentrating on a specific area on the installation surface GD of the lighting device 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 angle of reflection θ3 is larger than the first angle of reflection θ1, the light LT22 reflected by the second reflection surface 25a in the surface of the installation surface GD closer to the lighting fixture 1 is The light LT21 emitted to the area far from the fixture 1 and reflected by the first reflecting surface 21 is emitted to the area close to the lighting fixture 1 . Therefore, according to the second modification, it is possible to suppress the concentration of strong light in the area near the lighting fixture 1 in the surface of the installation surface GD that is closer to the lighting fixture 1 .

（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)
A lighting fixture 1A according to Embodiment 2 of the present invention will be described with reference to FIG. Embodiment 2 is mainly different from Embodiment 1 in that the lighting fixture 1A according to Embodiment 2 includes a substantially flat plate-shaped second reflecting portion 90 . In the following, differences of the second embodiment 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 Embodiment 2. FIG. In addition, in FIG. 9, the hatching which shows a cross section is suitably abbreviate|omitted for the simplification of 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 1A includes a second reflecting section 90 instead of the second reflecting section 9 of the lighting fixture 1 described with reference to FIG.

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 reflector 7 is the same as the configuration of the first reflector 7 described with reference to FIG. The first reflector 7 is arranged further away from the light source 11 than the second reflector 90 is.

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 reflector 90 reflects the light LT2 toward the opening 5. As shown in FIG. Specifically, the second reflecting section 90 reflects part of the light LT0 emitted from the light source 11 toward the opening 5 as the light LT2. The second reflecting section 90 has a substantially flat plate shape and has a substantially flat reflecting surface 90a. Therefore, the manufacturing cost of the second reflecting section 90 can be reduced compared to the curved structure. The reflecting surface 90a mirror-reflects the light LT2, for example. The reflective surface 90a is formed in the same manner as the reflective surface 7a. The second reflector 90 is fixed to the support 13 . In addition, it is not essential that the reflecting 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 reflector 90 with respect to the horizontal direction is different from the inclination angle θa of the first reflector 7 with respect to the horizontal direction. Each of the tilt angle θa and the tilt 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 reflector 90 is different from the inclination of the first reflector 7 . Therefore, the light distribution LD2 of the light LT0 of the light source 11 based on the second reflecting section 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 reflecting section 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 section 90 and the first reflecting section 7 . As a result, according to the second embodiment, even when the height of the lighting fixture 1A is low, it is possible to suppress the concentration of strong light in a specific area 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 reflector 90 is larger than the inclination angle θa of the first reflector 7 . In other words, the slope of the second reflecting portion 90 is greater than the slope of the first reflecting portion 7 . Therefore, the light LT2 reflected by the second reflecting section 90 is irradiated to the surface of the installation surface GD farther from the lighting device 1A. On the other hand, the light LT1 reflected by the first reflecting portion 7 is irradiated onto the surface of the installation surface GD that is closer to the lighting device 1A. In other words, the light LT0 of the light source 11 is distributed by the second reflecting portion 90 and the first reflecting portion 7 to the surface of the installation surface GD which is farther from and closer to the lighting apparatus 1A. As a result, according to the second embodiment, even if the height of the lighting device 1A is low, it is possible to suppress the concentration of strong light on the surface of the installation surface GD closer to the lighting device 1A. If it is possible to suppress the concentration of strong light on the surface closer to the lighting fixture 1A, even if the height of the lighting fixture 1A is low, the viewer can be given the 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 first reflecting portion 7 and the second reflecting portion 90 are configured by separate members. However, the first reflecting section 7 and the second reflecting section 90 may be configured by a single member. Also, the positions of the first reflecting portion 7 and the second reflecting portion 90 may be reversed. That is, the second reflector 90 may be arranged further away from the light source 11 than the first reflector 7 is. In this case, the inclination angle θb of the second reflector 9 is smaller than the inclination angle θa of the first reflector 7 . It is also possible to arrange a cover (not shown) over the opening 5 . The cover is similar to the cover that can be placed over 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 embodiments, and can be implemented in various aspects without departing from the gist of the present invention. Further, various inventions can be formed by appropriately combining a plurality of constituent elements disclosed in the above embodiments. For example, some components may be omitted from all components shown in the embodiments. Furthermore, components across different embodiments may be combined as appropriate. In order to make the drawings easier to understand, the drawings mainly show each component schematically. may be different. In addition, the material, shape, dimensions, etc. of each component shown in the above embodiment are examples and are not particularly limited, and various changes are possible without substantially departing from the effects of the present invention. be.

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。 INDUSTRIAL APPLICABILITY The present invention provides a lighting fixture 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 Reference Signs List 1, 1A lighting device 5 opening 7 first reflecting part 9, 90 second reflecting part 11 light source 21 first reflecting surface 22, 25 concave portion 22a, 25a second reflecting surface 23, 24 convex portion 23a, 24a third reflecting surface

Claims (4)

開口を有する筐体と、
前記開口に向けて光を反射する第１反射部と、
前記開口に向けて光を反射する第２反射部と、
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光源と
を備え、
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り、
前記第２反射部は、
光を反射する複数の第１反射面と、
各々が前記第１反射面に対して窪んでいる複数の凹部と
を有し、
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、照明器具。 a housing having an opening;
a first reflector that reflects light toward the opening;
a second reflector that reflects light toward the opening;
a light source located below the first reflecting section and the second reflecting section and emitting light toward the first reflecting section and the second reflecting section;
The light distribution of the light source based on the second reflecting section is different from the light distribution of the light source based on the first reflecting section,
The second reflecting section is
a plurality of first reflecting surfaces that reflect light;
a plurality of recesses each recessed with respect to the first reflecting surface;
has
A lighting fixture , wherein each of the plurality of recesses has a second reflecting surface that reflects light . 開口を有する筐体と、
前記開口に向けて光を反射する第１反射部と、
前記開口に向けて光を反射する第２反射部と、
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光源と
を備え、
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り、
前記第２反射部は、
光を反射する複数の第１反射面と、
各々が前記第１反射面に対して突出している複数の凸部と
を有し、
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、照明器具。 a housing having an opening;
a first reflector that reflects light toward the opening;
a second reflector that reflects light toward the opening;
a light source positioned below the first reflecting section and the second reflecting section and emitting light toward the first reflecting section and the second reflecting section;
with
The light distribution of the light source based on the second reflecting section is different from the light distribution of the light source based on the first reflecting section,
The second reflecting section is
a plurality of first reflecting surfaces that reflect light;
and a plurality of convex portions each protruding from the first reflecting surface,
The lighting fixture, wherein each of the plurality of convex portions has a third reflecting surface that reflects light. 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、請求項１又は請求項２に記載の照明器具。 The lighting fixture according to claim 1 or 2 , wherein the second reflector is convexly curved in a direction away from the light source. 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、請求項１から請求項３のいずれか１項に記載の照明器具。

The lighting fixture according to any one of claims 1 to 3 , wherein the first reflector is convexly curved in a direction away from the light source.
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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009094026A (en) 2007-10-12 2009-04-30 Nichia Corp Illumination unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009094026A (en) 2007-10-12 2009-04-30 Nichia Corp Illumination unit

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