JP7084693B2

JP7084693B2 - Light utilization space system

Info

Publication number: JP7084693B2
Application number: JP2017041915A
Authority: JP
Inventors: 隆之生喜; 極鈴木; 知成浜村; 好雄香山; 慎太郎熊倉; 光彦矢崎; 広正野村; 光雅伏見; 一実西村
Original assignee: Nippon Steel Coated Sheet Corp
Current assignee: Nippon Steel Coated Sheet Corp
Priority date: 2016-03-08
Filing date: 2017-03-06
Publication date: 2022-06-15
Anticipated expiration: 2037-03-06
Also published as: JP2017162808A

Description

本発明は、光活用空間システムに関する。詳しくは、本発明は、屋内の明るさなどの光学的な環境のコントロールが可能な光活用空間システムに関する。 The present invention relates to a light utilization space system. More specifically, the present invention relates to a light utilization space system capable of controlling an optical environment such as indoor brightness.

従来、屋内の明るさは照明器具の発光強度や配置などを変更して調整されている。 Conventionally, the indoor brightness is adjusted by changing the emission intensity and arrangement of the lighting fixtures.

特開平１０－２０８５１８号公報Japanese Unexamined Patent Publication No. 10-20518

しかし、照明器具の発光強度を強くして屋内を明るくする場合は、消費電力が多くなって、省エネルギー化を図ることが難しい。また照明器具の配置を変更して屋内を明るくする場合は照明器具の位置の自由度が低くなってしまう。 However, when the light emission intensity of the lighting equipment is increased to brighten the room, the power consumption increases and it is difficult to save energy. In addition, when the arrangement of the lighting fixtures is changed to brighten the interior, the degree of freedom in the position of the lighting fixtures is reduced.

本発明は上記の点に鑑みてなされたものであり、省エネルギー化を図りやすく、照明器具の位置の自由度が高い光活用空間システムを提供することを目的とするものである。 The present invention has been made in view of the above points, and an object of the present invention is to provide a light utilization space system which is easy to save energy and has a high degree of freedom in the position of a lighting fixture.

本発明に係る光活用空間システムは、天井面と壁面と光源を備え、前記光源から発せられる光が前記天井面と前記壁面の少なくとも１つで反射される光活用空間システムであって、前記光源は、前記天井面に配置されている照明器具であり、前記天井面の全面が第一の高光拡散型塗装鋼板で形成され、前記壁面の下部が高光反射型塗装鋼板で形成され、前記壁面の前記高光反射型塗装鋼板よりも上方に第二の高光拡散型塗装鋼板が配置されており、前記高光反射型塗装鋼板は、ＪＩＳＫ５６００－４－７で規定される６０度鏡面光沢度が９０％以上であり、前記第一及び第二の高光拡散型塗装鋼板は、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率が８５％以上であり、前記第一及び第二の高光拡散型塗装鋼板の前記６０度鏡面光沢度が、前記高光反射型塗装鋼板の前記６０度鏡面光沢度よりも小さく、５～４０％未満であり、前記高光反射型塗装鋼板、前記第一の高光拡散型塗装鋼板及び前記第二の高光拡散型塗装鋼板のそれぞれの最表面には、光触媒を含有する光活性塗膜が設けられていることを特徴とする。
また本発明に係る他の光活用空間システムは、天井面と壁面と光源を備え、前記光源から発せられる光が前記天井面と前記壁面の少なくとも１つで反射される光活用空間システムであって、前記光源は、前記天井面に配置されている照明器具であり、前記天井面の全面が高光反射型塗装鋼板で形成され、前記壁面の全面が高光拡散型塗装鋼板で形成され、前記高光反射型塗装鋼板は、ＪＩＳＫ５６００－４－７で規定される６０度鏡面光沢度が９０％以上であり、前記高光拡散型塗装鋼板は、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率が８５％以上であり、前記高光拡散型塗装鋼板の前記６０度鏡面光沢度が、前記高光反射型塗装鋼板の前記６０度鏡面光沢度よりも小さく、５～４０％未満であり、前記高光反射型塗装鋼板及び前記高光拡散型塗装鋼板のそれぞれの最表面には、光触媒を含有する光活性塗膜が設けられていることを特徴とする。
また本発明に係る他の光活用空間システムは、天井面と壁面と光源を備え、前記光源から発せられる光が前記天井面と前記壁面の少なくとも１つで反射される光活用空間システムであって、前記光源は、前記天井面に配置されている照明器具であり、前記天井面の全面が高光拡散型塗装鋼板で形成され、前記壁面の全面が高光反射型塗装鋼板で形成され、前記高光反射型塗装鋼板は、ＪＩＳＫ５６００－４－７で規定される６０度鏡面光沢度が９０％以上であり、前記高光拡散型塗装鋼板は、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率が８５％以上であり、前記高光拡散型塗装鋼板の前記６０度鏡面光沢度が、前記高光反射型塗装鋼板の前記６０度鏡面光沢度よりも小さく、５～４０％未満であり、前記高光反射型塗装鋼板及び前記高光拡散型塗装鋼板のそれぞれの最表面には、光触媒を含有する光活性塗膜が設けられていることを特徴とする。 The light utilization space system according to the present invention is a light utilization space system including a ceiling surface, a wall surface, and a light source, and light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface. Is a lighting fixture arranged on the ceiling surface, the entire surface of the ceiling surface is formed of the first high light diffusion type coated steel plate, and the lower portion of the wall surface is formed of the high light reflection type coated steel plate. A second high-light diffusion type coated steel plate is arranged above the high-light reflection type coated steel plate, and the high-light reflection type coated steel plate has a 60-degree mirror surface gloss specified by JIS K 5600-4-7. The first and second high light diffusion type coated steel plates are 90% or more, and the first and second high light diffusion type coated steel plates have a diffusion reflectance of light having a wavelength of 550 nm, which does not include mirror reflection by an integrating sphere, of 85% or more. The 60-degree mirror surface gloss of the second high-light diffusion type coated steel plate is smaller than the 60-degree mirror surface gloss of the high-light reflection type coated steel plate and is less than 5 to 40%. A photoactive coating film containing a photocatalyst is provided on the outermost surfaces of each of the first high light diffusion type coated steel plate and the second high light diffusion type coated steel plate .
Further, another light utilization space system according to the present invention is a light utilization space system including a ceiling surface, a wall surface, and a light source, and light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface. The light source is a lighting fixture arranged on the ceiling surface, and the entire surface of the ceiling surface is formed of a high light reflection type coated steel plate, and the entire surface of the wall surface is formed of a high light reflection type coated steel plate. The type-coated steel plate has a 60-degree mirror surface gloss of 90% or more specified by JIS K 5600-4-7, and the high-light diffusion type coated steel plate is light having a wavelength of 550 nm, which does not include mirror reflection due to an integrating sphere. The diffusion reflectance is 85% or more, and the 60-degree mirror surface gloss of the high-light-diffusing coated steel plate is smaller than the 60-degree mirror surface gloss of the high-light reflection-type coated steel plate, and is less than 5 to 40%. Therefore, a photoactive coating film containing a photocatalyst is provided on the outermost surfaces of the high light reflection type coated steel plate and the high light diffusion type coated steel plate .
Further, another light utilization space system according to the present invention is a light utilization space system including a ceiling surface, a wall surface, and a light source, and light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface. The light source is a lighting fixture arranged on the ceiling surface, and the entire surface of the ceiling surface is formed of a high light diffusion type coated steel plate, and the entire surface of the wall surface is formed of a high light reflection type coated steel plate. The type-coated steel plate has a 60-degree mirror surface gloss of 90% or more specified by JIS K 5600-4-7, and the high-light diffusion type coated steel plate is light having a wavelength of 550 nm, which does not include mirror reflection due to an integrating sphere. The diffusion reflectance is 85% or more, and the 60-degree mirror surface gloss of the high-light-diffusing coated steel plate is smaller than the 60-degree mirror surface gloss of the high-light reflection-type coated steel plate, and is less than 5 to 40%. Therefore, a photoactive coating film containing a photocatalyst is provided on the outermost surfaces of the high light reflection type coated steel plate and the high light diffusion type coated steel plate .

本発明は、光源から発せられる光が天井面と壁面の一部で反射されたり拡散されたりするために、該光が天井面と壁面で囲まれる空間に広がりやすくなり、光源の発光強度や配置の影響を少なくして該空間の明るさを調整することができ、省エネルギー化を図りやすく、光源の位置の自由度が高い。 In the present invention, since the light emitted from the light source is reflected or diffused by a part of the ceiling surface and the wall surface, the light easily spreads in the space surrounded by the ceiling surface and the wall surface, and the light emission intensity and arrangement of the light source are easily arranged. The brightness of the space can be adjusted by reducing the influence of the light source, it is easy to save energy, and the degree of freedom in the position of the light source is high.

図１は、本発明に係る光活用空間システムの一実施形態を示す概略図である。FIG. 1 is a schematic view showing an embodiment of an optical utilization space system according to the present invention. 図２は、本発明に係る光活用空間システムの他の一実施形態を示す概略図である。FIG. 2 is a schematic view showing another embodiment of the optical utilization space system according to the present invention. 図３は、本発明に係る光活用空間システムの他の一実施形態を示す概略図である。FIG. 3 is a schematic view showing another embodiment of the optical utilization space system according to the present invention. 図４は、本発明に係る光活用空間システムの他の一実施形態を示す概略図である。FIG. 4 is a schematic view showing another embodiment of the optical utilization space system according to the present invention. 図５Ａは、壁クロスを使用した状態をシミュレーションしたコンピュータグラフィックスである。図５Ｂは、高光反射型塗装鋼板を使用した状態をシミュレーションしたコンピュータグラフィックスである。FIG. 5A is computer graphics simulating a state using a wall cloth. FIG. 5B is computer graphics simulating a state in which a high light reflection type coated steel plate is used. 図６Ａは、鏡面光沢度が１０％である高光拡散型塗装鋼板を使用した状態をシミュレーションしたコンピュータグラフィックスである。図６Ｂは、鏡面光沢度が３０％である高光拡散型塗装鋼板を使用した状態をシミュレーションしたコンピュータグラフィックスである。FIG. 6A is computer graphics simulating the state of using a high light diffusion type coated steel sheet having a mirror surface gloss of 10%. FIG. 6B is computer graphics simulating the state of using a high light diffusion type coated steel sheet having a mirror surface gloss of 30%. 図７Ａは、本発明に係る光活用空間システムの他の一実施形態を示す概略の平面図である。図７Ｂは、同上の天井面を示す概略図である。FIG. 7A is a schematic plan view showing another embodiment of the optical utilization space system according to the present invention. FIG. 7B is a schematic view showing the ceiling surface of the same. 図８Ａ、図８Ｂ、図８Ｃは、本発明に係る光活用空間システムの他の一実施形態を示し、照明装置の点灯状態の概略図である。8A, 8B, and 8C show another embodiment of the light utilization space system according to the present invention, and are schematic views of a lighting state of the lighting device. 図９は、実施例１及び比較例１の測定結果を示すグラフである。FIG. 9 is a graph showing the measurement results of Example 1 and Comparative Example 1. 図１０は、実施例２及び比較例２の測定結果を示すグラフである。FIG. 10 is a graph showing the measurement results of Example 2 and Comparative Example 2. 図１１は、実施例３及び比較例３の測定結果を示すグラフである。FIG. 11 is a graph showing the measurement results of Example 3 and Comparative Example 3. 図１２は、実施例１及び実施例４～６の測定結果を示すグラフである。FIG. 12 is a graph showing the measurement results of Examples 1 and 4 to 6. 図１３は、実施例２、実施例３、実施例７及び実施例８の測定結果を示すグラフである。FIG. 13 is a graph showing the measurement results of Example 2, Example 3, Example 7, and Example 8. 図１４Ａ及び図１４Ｂは、官能試験の結果を示すグラフである。14A and 14B are graphs showing the results of the sensory test.

以下、本発明を実施するための形態を説明する。 Hereinafter, embodiments for carrying out the present invention will be described.

図１～４はそれぞれ光活用空間システム１００の実施形態を示している。 FIGS. 1 to 4 show embodiments of the optical utilization space system 100, respectively.

光活用空間システム１００は天井面１１０と床面１２０と壁面１３０と光源１４０を備えている。光活用空間システム１００は天井面１１０と床面１２０と壁面１３０とで囲まれて空間１５０が形成されている。空間１５０の明るさは、光源１４０で発せられる光が天井面１１０と床面１２０と壁面１３０の少なくとも１つで反射されたり拡散されたりして調整される。なお、図１～４では、４面ある壁面１３０のうち、１面の図示が省略されている。また、光活用空間システム１００の外観形状は特に限定されないが、例えば、直方体に形成される。また光活用空間システム１００の内部形状（空間１５０の形状）は特に限定されないが、例えば、直方体に形成される。 The light utilization space system 100 includes a ceiling surface 110, a floor surface 120, a wall surface 130, and a light source 140. The light utilization space system 100 is surrounded by a ceiling surface 110, a floor surface 120, and a wall surface 130 to form a space 150. The brightness of the space 150 is adjusted by reflecting or diffusing the light emitted by the light source 140 on at least one of the ceiling surface 110, the floor surface 120, and the wall surface 130. In FIGS. 1 to 4, one of the four wall surfaces 130 is not shown. Further, the external shape of the light utilization space system 100 is not particularly limited, but is formed in a rectangular parallelepiped, for example. The internal shape of the light utilization space system 100 (the shape of the space 150) is not particularly limited, but is formed in, for example, a rectangular parallelepiped.

天井面１１０と床面１２０と壁面１３０との少なくとも一部が高光反射型塗装鋼板又は高光拡散型塗装鋼板で形成される。すなわち、天井面１１０はその一部又は全面が高光反射型塗装鋼板又は高光拡散型塗装鋼板で形成される場合がある。床面１２０はその一部又は全面が高光反射型塗装鋼板又は高光拡散型塗装鋼板で形成される場合がある。壁面１３０はその一部又は全面が高光反射型塗装鋼板又は高光拡散型塗装鋼板で形成される場合がある。 At least a part of the ceiling surface 110, the floor surface 120, and the wall surface 130 is formed of a high light reflection type coated steel plate or a high light diffusion type coated steel plate. That is, the ceiling surface 110 may be partially or entirely formed of a high light reflection type coated steel plate or a high light diffusion type coated steel plate. The floor surface 120 may be partially or entirely formed of a high light reflection type coated steel plate or a high light diffusion type coated steel plate. The wall surface 130 may be partially or entirely formed of a high light reflection type coated steel plate or a high light diffusion type coated steel plate.

高光反射型塗装鋼板及び高光拡散型塗装鋼板は厚みが０．２５ｍｍ～３．２ｍｍ程度の板状に形成されている。後述の壁部材や天井部材にサンドイッチパネルに使用する場合は、上記の高光反射型塗装鋼板及び高光拡散型塗装鋼板をプレス成形、押出成形、ロール成形等によって成形加工してサンドイッチパネルの金属外皮として使用する。 The high light reflection type coated steel sheet and the high light diffusion type coated steel sheet are formed in a plate shape having a thickness of about 0.25 mm to 3.2 mm. When used as a sandwich panel for wall members and ceiling members, which will be described later, the above-mentioned high-light reflection type coated steel sheet and high-light diffusion type coated steel sheet are molded by press molding, extrusion molding, roll molding, etc. to form a metal outer skin of the sandwich panel. use.

高光反射型塗装鋼板は、少なくとも片面の６０度鏡面光沢度が９０％以上に形成されている。鏡面光沢度は、ＪＩＳＫ５６００－４－７（１９９９）に記載されている６０度鏡面光沢度測定方法に従い、光の反射率を測定して、基準面の光沢度を１００としたときの百分率で規定される。高光反射型塗装鋼板の鏡面光沢度の上限は１００％である。高光反射型塗装鋼板の鏡面光沢度は鋼板の表面に形成される塗膜の組成や厚みなどにより実現される。高光反射型塗装鋼板は、例えば、新日鐵住金株式会社製造の商品名「高反射タイプビューコート」などが使用可能である。また、特許第４０７４８４７号公報や特許第４３１４０８０号公報に記載された鋼板を使用可能である。 The high light reflection type coated steel sheet is formed to have a 60 degree mirror gloss of 90% or more on at least one side. The mirror glossiness is a percentage when the reflectance of the light is measured according to the 60-degree mirror glossiness measurement method described in JIS K 5600-4-7 (1999) and the glossiness of the reference surface is 100. Specified in. The upper limit of the mirror surface gloss of the high light reflection type coated steel sheet is 100%. The mirror glossiness of the high light reflection type coated steel sheet is realized by the composition and thickness of the coating film formed on the surface of the steel sheet. As the high-reflection type coated steel sheet, for example, the trade name "high-reflection type view coat" manufactured by Nippon Steel & Sumitomo Metal Corporation can be used. Further, the steel sheets described in Japanese Patent No. 4074847 and Japanese Patent No. 431480 can be used.

高光反射型塗装鋼板の最表面には、光触媒を含有する光活性塗膜が設けられていてもよい。光活性層は酸化チタンなどの光触媒を含有する。光触媒としては可視光励起型であることが好ましく、これにより、屋内の光で光触媒が活性しやすくなる。光活性塗膜は、光触媒の酸化分解機能による抗菌・抗カビ・抗ウイルスや空気浄化（ガス分解）機能があり、表面の親水化機能も得られる。光触媒である酸化チタンに光が当たると、その表面に活性酸素（強い酸化力）が発生する。この活性酸素が、有機物、細菌やカビを分解すると考えられる。例えば、光活性塗膜に白色蛍光灯の光を照射すると、黄色ブドウ球菌やアオカビの発生が抑制される。また光活性塗膜に蛍光灯の光を照射すると、インフルエンザＡ型ウイルスの増殖が抑制される。光活性塗膜は、特許第４５８８１６４号公報や特開２００６－２７２０３６号公報に開示のものが使用可能である。 A photoactive coating film containing a photocatalyst may be provided on the outermost surface of the high light reflection type coated steel sheet. The photoactive layer contains a photocatalyst such as titanium oxide. The photocatalyst is preferably a visible light excitation type, which facilitates activation of the photocatalyst with indoor light. The photoactive coating film has antibacterial, antifungal, antiviral and air purification (gas decomposition) functions due to the oxidative decomposition function of the photocatalyst, and also has a surface hydrophilization function. When light hits titanium oxide, which is a photocatalyst, active oxygen (strong oxidizing power) is generated on the surface. This active oxygen is thought to decompose organic matter, bacteria and mold. For example, when the photoactive coating film is irradiated with the light of a white fluorescent lamp, the generation of Staphylococcus aureus and Penicillium is suppressed. Further, when the photoactive coating film is irradiated with the light of a fluorescent lamp, the growth of influenza A virus is suppressed. As the photoactive coating film, those disclosed in Japanese Patent No. 4588164 and Japanese Patent Application Laid-Open No. 2006-272060 can be used.

高光拡散型塗装鋼板は、少なくとも片面の拡散反射率が８５％以上に形成されている。ここで「拡散反射率」とは、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率のことである。この拡散反射率は、積分球を使用した拡散反射率測定装置を用いて測定した波長５５０ｎｍの拡散反射率が、基準白色板を１００としたときの百分率で規定される。拡散反射率測定装置としては、ミノルタ株式会社（現在はコニカミノルタ株式会社）製の「ＣＭ－３７００ｄ」などを例示することができる。拡散反射率は、ＪＩＳＺ８７２２幾何条件ｃなどに準拠して測定されるものであって、積分球（光をほぼ完全に拡散反射する硫酸バリウムなどの白い塗料で内面を塗布した球）を使用して、拡散照明８°方向受光の条件で、波長５５０ｎｍでの反射率を、基準白色板（材質は硫酸バリウム）を１００とした時の百分率で測定する。拡散反射率は、正反射光を除去して光を測る方法をＳＣＥ（正反射光除去）方式を採用することができる。ＳＣＥ方式では、正反射光を除去し、拡散反射光だけを測定しているので、目視に近い色や光沢の評価となる。高光拡散型塗装鋼板の拡散反射率の上限は１００％である。高光拡散型塗装鋼板の拡散反射率は鋼板の表面に形成される塗膜の組成や厚みなどにより実現される。高光拡散型塗装鋼板は、例えば、鋼板の表面にプライマー層と上塗塗膜層の２層を備える塗装板が使用可能である。プライマー層は、ポリエステル樹脂及び硬化剤を含有するプライマー樹脂バインダ、及び該プライマー樹脂バインダ１００質量部に基づいて、酸化チタン顔料８０～２５０質量部を含有し、且つプライマー層の膜厚が１０～２０μｍである上塗塗膜層は、ポリエステル樹脂及び硬化剤を含有する上塗樹脂バインダ、並びに該上塗樹脂バインダ１００質量部に対し、酸化チタン顔料１００～２５０質量部、及び平均粒子径４～９μｍの有機ポリマー微粒子１０～３０質量部を含有し、且つ上塗塗膜層の膜厚が２０～３５μｍである。 The high light diffusion type coated steel sheet is formed to have a diffuse reflectance of at least one side of 85% or more. Here, the "diffuse reflectance" is the diffuse reflectance of light having a wavelength of 550 nm, which does not include specular reflection by the integrating sphere. This diffuse reflectance is defined as a percentage when the diffuse reflectance with a wavelength of 550 nm measured using a diffuse reflectance measuring device using an integrating sphere is set to 100 as a reference white plate. As the diffuse reflectance measuring device, "CM-3700d" manufactured by Minolta Co., Ltd. (currently Konica Minolta Co., Ltd.) can be exemplified. Diffuse reflectance is measured in accordance with JIS Z 8722 geometric condition c, etc., and an integrating sphere (a sphere whose inner surface is coated with a white paint such as barium sulfate that diffusely reflects light almost completely) is used. Then, the reflectance at a wavelength of 550 nm is measured as a percentage when the reference white plate (material is barium sulfate) is set to 100 under the condition of light reception in the diffuse illumination 8 ° direction. For the diffuse reflectance, an SCE (specularly reflected light removal) method can be adopted as a method of measuring the light by removing the specularly reflected light. In the SCE method, the specularly reflected light is removed and only the diffusely reflected light is measured, so that the color and gloss can be evaluated close to the visual one. The upper limit of the diffuse reflectance of the high light diffusion type coated steel sheet is 100%. The diffuse reflectance of a high light diffusion type coated steel sheet is realized by the composition and thickness of the coating film formed on the surface of the steel sheet. As the high light diffusion type coated steel sheet, for example, a coated plate having two layers of a primer layer and a topcoat coating film layer on the surface of the steel sheet can be used. The primer layer contains 80 to 250 parts by mass of a titanium oxide pigment based on a primer resin binder containing a polyester resin and a curing agent and 100 parts by mass of the primer resin binder, and the thickness of the primer layer is 10 to 20 μm. The topcoat coating layer is an organic polymer having a titanium oxide pigment of 100 to 250 parts by mass and an average particle diameter of 4 to 9 μm with respect to 100 parts by mass of a topcoat resin binder containing a polyester resin and a curing agent and 100 parts by mass of the topcoat resin binder. It contains 10 to 30 parts by mass of fine particles, and the thickness of the topcoat coating layer is 20 to 35 μm.

高光拡散型塗装鋼板の最表面には、高光反射型塗装鋼板と同様に、光触媒を含有する光活性塗膜が設けられていてもよく、この場合、上記のような効果が高光拡散型塗装鋼板でも生じることになる。 Similar to the high light reflection type coated steel sheet, a photoactive coating film containing a photocatalyst may be provided on the outermost surface of the high light diffusion type coated steel sheet. But it will happen.

高光拡散型塗装鋼板は、光源１４０から発せられる光が効率よく拡散反射することができ、正反射光を拡散反射光へ振り分けているため、像の映り込みが少なく、柔らかい光沢感となる。さらに、照度を高く保持することができるため、光源１４０の個数や消費電力を低減することができ、トータル的なコスト削減につながる可能性があり、省エネルギー化を図れることができる。例えば、高光拡散型塗装鋼板は、汎用塗装鋼板に比べて、照度が４０～４５％向上することがあり、消費電力においては２０００ｌｘ（ＪＩＳＺ９１１０：ショーウインドウ重要部照度基準）の時、高光拡散型塗装鋼板は、汎用塗装鋼板に比べて、１５～２０％低減することが可能である。 In the high light diffusion type coated steel sheet, the light emitted from the light source 140 can be efficiently diffusely reflected, and the specular reflected light is distributed to the diffuse reflected light, so that the image is less reflected and the glossiness is soft. Further, since the illuminance can be kept high, the number of light sources 140 and the power consumption can be reduced, which may lead to a total cost reduction, and energy saving can be achieved. For example, a high light diffusion type coated steel sheet may have an illuminance of 40 to 45% higher than that of a general-purpose coated steel sheet, and when the power consumption is 2000 lpx (JIS Z 9110: show window important part illuminance standard), the illuminance is high. The mold-coated steel sheet can be reduced by 15 to 20% as compared with the general-purpose coated steel sheet.

高光反射型塗装鋼板の拡散反射率は、高光拡散型塗装鋼板よりも小さいほうが好ましく、７０～９０％であり、好ましくは８５％以下である。高光反射型塗装鋼板の拡散反射率は低いほど、正反射光が多くなることがあり、好ましい。 The diffuse reflectance of the high light reflection type coated steel sheet is preferably smaller than that of the high light reflection type coated steel sheet, and is 70 to 90%, preferably 85% or less. The lower the diffuse reflectance of the high light reflection type coated steel sheet, the more specular light may be, which is preferable.

高光拡散型塗装鋼板の鏡面光沢度は、高光反射型塗装鋼板よりも小さいほうが好ましく、９０％未満であり、好ましくは５～４０％である。高光拡散型塗装鋼板の鏡面光沢度は低いほど、像の映り込みが少なくなり、好ましい。 The mirror surface gloss of the high light diffusion type coated steel sheet is preferably smaller than that of the high light reflection type coated steel sheet, and is less than 90%, preferably 5 to 40%. The lower the mirror glossiness of the high light diffusion type coated steel sheet, the less the image is reflected, which is preferable.

図５Ａ及び図５Ｂ並びに図６Ａ及び図６Ｂは、部屋の様子をシミュレーションしたコンピュータグラフィックス（ＣＧ）である。図５Ａは壁クロスを使用した部屋のＣＧであり、図５Ｂの高光反射型塗装鋼板を使用した部屋のＣＧに比べて、やや暗い。つまり、高光反射型塗装鋼板を使用すると、部屋が明るくなる。また、図５ＢのＸ部分には椅子の像が映り込んでおり、Ｙ部分には照明器具の像が映り込んでいる。つまり、高光反射型塗装鋼板を壁面に使用すると、像の映り込みが生じる。一方、図６Ａ及び図６Ｂの高拡散型塗装鋼板を使用した部屋では明るくなるとともに、壁面への像の映り込みもほとんどない。また図６Ａと図６Ｂを対比すると、光沢度が大きい高光反射型塗装鋼板を使用した図６Ｂの方が、光沢度が小さい高光反射型塗装鋼板を使用した図６Ａに比べて、部屋が明るい。 5A and 5B and 6A and 6B are computer graphics (CG) simulating the state of a room. FIG. 5A shows the CG of the room using the wall cloth, which is slightly darker than the CG of the room using the high light reflection type coated steel plate of FIG. 5B. In other words, the room becomes brighter when the high light reflection type painted steel sheet is used. Further, the image of the chair is reflected in the X portion of FIG. 5B, and the image of the lighting fixture is reflected in the Y portion. That is, when a high light reflection type coated steel plate is used for a wall surface, an image is reflected. On the other hand, in the room using the high diffusion type coated steel plate of FIGS. 6A and 6B, the room becomes bright and the image is hardly reflected on the wall surface. Further, when FIG. 6A and FIG. 6B are compared, the room of FIG. 6B using the high light reflection type coated steel sheet having a high glossiness is brighter than that of FIG. 6A using the high light reflection type coated steel sheet having a low glossiness.

天井面１１０は天井部材１１１の下面（空間１５０側の表面）で形成されている。天井面１１０で高光反射を得る場合は、天井部材１１１は高光反射型塗装鋼板で形成される。天井面１１０で高光拡散を得る場合は、天井部材１１１は高光拡散型塗装鋼板で形成される。また、天井部材１１１はサンドイッチパネルが使用可能である。サンドイッチパネルは二枚の金属外皮の間に断熱材などの芯材を設けて形成されている。天井面１１０で高光反射を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光反射型塗装鋼板で形成される。天井面１１０で高光拡散を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光拡散型塗装鋼板で形成される。天井面１１０で高光反射や高光拡散を得ない場合は、天井部材１１１は合板や石膏ボードなどが使用される。また天井面１１０で高光反射や高光拡散を得ない場合、サンドイッチパネルの空間１５０側の金属外皮が汎用鋼板で形成される。汎用鋼板は鏡面光沢度が８０％以下で拡散反射率が８０％以下である。さらに、天井面１１０で高光反射や高光拡散を得ない場合、天井部材１１１の下面が天井クロス等で形成されていてもよい。 The ceiling surface 110 is formed on the lower surface of the ceiling member 111 (the surface on the space 150 side). When high light reflection is obtained on the ceiling surface 110, the ceiling member 111 is formed of a high light reflection type coated steel plate. When high light diffusion is obtained on the ceiling surface 110, the ceiling member 111 is formed of a high light diffusion type coated steel plate. Further, a sandwich panel can be used for the ceiling member 111. The sandwich panel is formed by providing a core material such as a heat insulating material between two metal outer skins. When high light reflection is obtained on the ceiling surface 110, the metal outer skin on the space 150 side of the sandwich panel is formed of a high light reflection type coated steel plate. When high light diffusion is obtained on the ceiling surface 110, the metal outer skin on the space 150 side of the sandwich panel is formed of a high light diffusion type coated steel plate. When the ceiling surface 110 does not obtain high light reflection or high light diffusion, plywood, gypsum board, or the like is used for the ceiling member 111. Further, when the ceiling surface 110 does not obtain high light reflection or high light diffusion, the metal outer skin on the space 150 side of the sandwich panel is formed of a general-purpose steel plate. The general-purpose steel sheet has a mirror gloss of 80% or less and a diffuse reflectance of 80% or less. Further, when the ceiling surface 110 does not obtain high light reflection or high light diffusion, the lower surface of the ceiling member 111 may be formed of a ceiling cloth or the like.

床面１２０は床部材１２１の上面（空間１５０側の表面）で形成されている。床面１２０で高光反射を得る場合は、床部材１２１は高光反射型塗装鋼板で形成される。床面１２０で高光拡散を得る場合は、床部材１２１は高光拡散型塗装鋼板で形成される。また、床部材１２１は上記と同様のサンドイッチパネルが使用可能である。この場合、床面１２０で高光反射を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光反射型塗装鋼板で形成される。床面１２０で高光拡散を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光拡散型塗装鋼板で形成される。床面１２０で高光反射や高光拡散を得ない場合は、床部材１２１は合板や石膏ボードなどが使用される。また床面１２０で高光反射や高光拡散を得ない場合、サンドイッチパネルの空間１５０側の金属外皮が上記と同様の汎用鋼板で形成される。さらに、床面１２０で高光反射や高光拡散を得ない場合、床部材１２１の上面がカーペット、タイル、木質フローリング、畳、コンクリート、硬質プラスチックなどで形成される樹脂板等で形成されていてもよい。 The floor surface 120 is formed on the upper surface (surface on the space 150 side) of the floor member 121. When high light reflection is obtained on the floor surface 120, the floor member 121 is formed of a high light reflection type coated steel plate. When high light diffusion is obtained on the floor surface 120, the floor member 121 is formed of a high light diffusion type coated steel plate. Further, as the floor member 121, the same sandwich panel as described above can be used. In this case, when high light reflection is obtained on the floor surface 120, the metal outer skin on the space 150 side of the sandwich panel is formed of the high light reflection type coated steel plate. When high light diffusion is obtained on the floor surface 120, the metal outer skin on the space 150 side of the sandwich panel is formed of a high light diffusion type coated steel plate. When high light reflection or high light diffusion is not obtained on the floor surface 120, plywood, gypsum board or the like is used for the floor member 121. When high light reflection and high light diffusion are not obtained on the floor surface 120, the metal outer skin on the space 150 side of the sandwich panel is formed of the same general-purpose steel plate as described above. Further, when the floor surface 120 does not obtain high light reflection or high light diffusion, the upper surface of the floor member 121 may be formed of a resin plate made of carpet, tile, wood flooring, tatami mat, concrete, hard plastic, or the like. ..

壁面１３０は壁部材１３１の空間１５０側の表面で形成されている。壁面１３０で高光反射を得る場合は、壁部材１３１は高光反射型塗装鋼板で形成される。壁面１３０で高光拡散を得る場合は、壁部材１３１は高光拡散型塗装鋼板で形成される。また、壁部材１３１は上記と同様のサンドイッチパネルが使用可能である。この場合、壁面１３０で高光反射を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光反射型塗装鋼板で形成される。壁面１３０で高光拡散を得る場合は、サンドイッチパネルの空間１５０側の金属外皮が高光拡散型塗装鋼板で形成される。壁面１３０で高光反射や高光拡散を得ない場合は、壁部材１３１は合板や石膏ボードなどが使用される。また壁面１３０で高光反射や高光拡散を得ない場合、サンドイッチパネルの空間１５０側の金属外皮が上記と同様の汎用鋼板で形成される。さらに、壁面１３０で高光反射や高光拡散を得ない場合、壁部材１３１の表面が壁紙（壁クロス）等で形成されていてもよい。 The wall surface 130 is formed on the surface of the wall member 131 on the space 150 side. When high light reflection is obtained on the wall surface 130, the wall member 131 is formed of a high light reflection type coated steel plate. When high light diffusion is obtained on the wall surface 130, the wall member 131 is formed of a high light diffusion type coated steel plate. Further, as the wall member 131, the same sandwich panel as described above can be used. In this case, when high light reflection is obtained on the wall surface 130, the metal outer skin on the space 150 side of the sandwich panel is formed of the high light reflection type coated steel plate. When high light diffusion is obtained on the wall surface 130, the metal outer skin on the space 150 side of the sandwich panel is formed of a high light diffusion type coated steel plate. When high light reflection or high light diffusion is not obtained on the wall surface 130, plywood, gypsum board or the like is used for the wall member 131. Further, when the wall surface 130 does not obtain high light reflection or high light diffusion, the metal outer skin on the space 150 side of the sandwich panel is formed of the same general-purpose steel plate as described above. Further, when the wall surface 130 does not obtain high light reflection or high light diffusion, the surface of the wall member 131 may be formed of wallpaper (wall cloth) or the like.

なお、上記のサンドイッチパネルとしては温度コントロールパネルであってもよい。温度コントロールパネルは断熱性能と蓄熱性能を有するものである。温度コントロールパネルは、内蔵している潜熱蓄熱材が吸放熱して空間１５０の温度をほぼ平準化することができる。温度コントロールパネルとしては、特開２０１５－１５８０８５号公報に記載されたものを使用可能である。 The sandwich panel may be a temperature control panel. The temperature control panel has heat insulation performance and heat storage performance. The temperature control panel has a built-in latent heat storage material that absorbs and dissipates heat and can substantially level the temperature of the space 150. As the temperature control panel, those described in JP-A-2015-15885 can be used.

光源１４０としては、蛍光灯やＬＥＤ（発光ダイオード）を用いた照明装置が使用可能である。光源１４０は天井面１１０の略中央部に配置されているが、これに限定されるものではない。 As the light source 140, a lighting device using a fluorescent lamp or an LED (light emitting diode) can be used. The light source 140 is arranged at a substantially central portion of the ceiling surface 110, but is not limited thereto.

図１及び２に示す光活用空間システム２００は、天井面１１０の全面が第一の高光拡散型塗装鋼板２１０で形成されている。また、壁面１３０の一部である下部が高光反射型塗装鋼板２３０で形成されている。壁面１３０の下部よりも上の部分が第二の高光拡散型塗装鋼板２４０で形成されている。ここで、壁面１３０の下部とは、壁面１３０の床面１２０の近傍部分であって、例えば、床面１２０から１００ｍｍ～１０００ｍｍの高さであることが好ましい。高光拡散型塗装鋼板２４０は、壁面１３０を高さ方向で三等分した場合に、壁面１３０の中段部と上段部とに配置され、壁面１３０の下段部に高光反射型塗装鋼板２３０が配置されることが好ましい。床面１２０は高光反射や高光拡散をしない床部材１２１（例えば、カーペットやコンクリート）で形成されている。 In the light utilization space system 200 shown in FIGS. 1 and 2, the entire surface of the ceiling surface 110 is formed of the first high light diffusion type coated steel plate 210. Further, the lower portion of the wall surface 130 is formed of a high light reflection type coated steel plate 230. The portion above the lower portion of the wall surface 130 is formed of the second high light diffusion type coated steel plate 240. Here, the lower portion of the wall surface 130 is a portion near the floor surface 120 of the wall surface 130, and is preferably at a height of, for example, 100 mm to 1000 mm from the floor surface 120. When the wall surface 130 is divided into three equal parts in the height direction, the high light diffusion type coated steel plate 240 is arranged in the middle portion and the upper portion of the wall surface 130, and the high light reflection type coated steel plate 230 is arranged in the lower portion of the wall surface 130. Is preferable. The floor surface 120 is formed of a floor member 121 (for example, carpet or concrete) that does not reflect or diffuse high light.

光活用空間システム２００では、天井面１１０が高光拡散型塗装鋼板２１０で形成され、壁面１３０の下部が高光反射型塗装鋼板２３０で形成されているため、床面１２０付近の低い場所の照度が上がる。また天井面１１０からの光の反射が抑制され、像の映り込みが低減される。また車いすに座っている人や立っている人の目線位置が高光拡散型塗装鋼板２３１で形成され、光の反射が抑制され、像の映り込みが低減される。 In the light utilization space system 200, since the ceiling surface 110 is formed of the high light diffusion type coated steel plate 210 and the lower portion of the wall surface 130 is formed of the high light reflection type coated steel plate 230, the illuminance in a low place near the floor surface 120 increases. .. Further, the reflection of light from the ceiling surface 110 is suppressed, and the reflection of the image is reduced. Further, the line-of-sight position of a person sitting or standing in a wheelchair is formed by the high light diffusion type coated steel plate 231 to suppress light reflection and reduce image reflection.

従って、図１に示すように、ベッド２５０に寝ている病人が天井を眺めて過ごしたり、車いすに座っているケースが多く想定される病室や老健施設として、光活用空間システム２００を形成することができる。すなわち、視野範囲には高光拡散型塗装鋼板２１０、２３１を配置することにより、壁面１３０への像の映り込みが少なく、床面１２０付近も明るくできるので快適である。 Therefore, as shown in FIG. 1, the light utilization space system 200 is formed as a hospital room or a long-term care facility where a sick person sleeping on a bed 250 often spends time looking at the ceiling or sitting in a wheelchair. Can be done. That is, by arranging the high light diffusion type coated steel sheets 210 and 231 in the visual field range, the image is less reflected on the wall surface 130 and the vicinity of the floor surface 120 can be brightened, which is comfortable.

また、図２に示すように、光活用空間システム２００で植物工場を形成することができる。この場合、光が届きにくい(暗い)栽培棚２６０の床面１２０付近(高さの低い場所)も明るくでき、照明効率が上がる。なお栽培棚２６０は植物２６１を収容して栽培するための棚である。 Further, as shown in FIG. 2, a plant factory can be formed by the light utilization space system 200. In this case, the vicinity of the floor surface 120 (low height) of the cultivation shelf 260 (dark) where light is difficult to reach can be brightened, and the lighting efficiency is improved. The cultivation shelf 260 is a shelf for accommodating and cultivating plants 261.

図３に示す光活用空間システム３００は、天井面１１０の全面が高光反射型塗装鋼板３１０で形成され、壁面１３０の全面が高光拡散型塗装鋼板３３０で形成されている。この場合、床面１２０は高光反射や高光拡散をしない床部材１２１（例えば、カーペットやコンクリート）で形成されている。 In the light utilization space system 300 shown in FIG. 3, the entire surface of the ceiling surface 110 is formed of the high light reflection type coated steel plate 310, and the entire surface of the wall surface 130 is formed of the high light diffusion type coated steel plate 330. In this case, the floor surface 120 is formed of a floor member 121 (for example, carpet or concrete) that does not reflect high light or diffuse high light.

光活用空間システム３００では、床面１２０の上にテーブル３５０やいす３５１等の障害物（床面１２０から約８５０ｍｍ程度の高さ）があっても、その障害物の下の床面１２０の照度が上がる。また、立っている人の目線位置が高光拡散型塗装鋼板３３０で形成され、光の反射が抑制され、像の映り込みが低減される。 In the light utilization space system 300, even if there is an obstacle (a height of about 850 mm from the floor surface 120) such as a table 350 or a chair 351 on the floor surface 120, the illuminance of the floor surface 120 under the obstacle surface 120 Goes up. Further, the position of the line of sight of a standing person is formed by the high light diffusion type coated steel plate 330, the reflection of light is suppressed, and the reflection of the image is reduced.

従って、光活用空間システム３００では、壁面１３０への像の映り込みが少なくて快適となり、オフィスや会議室、店舗に好適である。また壁面１３０への像の映り込みが少なくなり、足下(床面１２０)も明るくできて快適となり、店舗やレストラン、ホテルの客室に好適である。 Therefore, the light utilization space system 300 is comfortable because the image is less reflected on the wall surface 130, and is suitable for offices, conference rooms, and stores. Further, the reflection of the image on the wall surface 130 is reduced, the feet (floor surface 120) can be brightened and comfortable, which is suitable for the guest rooms of stores, restaurants and hotels.

図４に示す光活用空間システム４００は、天井面１１０の全面が高光拡散型塗装鋼板４１０で形成され、壁面１３０の全面が高光反射型塗装鋼板４３０で形成されている。この場合、床面１２０は高光反射や高光拡散をしない床部材１２１（例えば、カーペットやコンクリート）で形成されている。 In the light utilization space system 400 shown in FIG. 4, the entire surface of the ceiling surface 110 is formed of the high light diffusion type coated steel plate 410, and the entire surface of the wall surface 130 is formed of the high light reflection type coated steel plate 430. In this case, the floor surface 120 is formed of a floor member 121 (for example, carpet or concrete) that does not reflect high light or diffuse high light.

光活用空間システム４００では、光活用空間システム２００及び３００に比べて、空間１５０の全体の照度が上がる。 In the light utilization space system 400, the illuminance of the entire space 150 is higher than that in the light utilization space systems 200 and 300.

従って、光活用空間システム４００は、壁面１３０への像の映り込みがあっても問題が無い用途、例えば、植物工場や倉庫などに好適である。また光活用空間システム４００では、床面１２０を高光反射型塗装鋼板や高光拡散型塗装鋼板で形成することも可能であり、この場合、床面１２０が高光反射や高光拡散をしない場合に比べて、空間１５０の全体の照度がさらに向上する。 Therefore, the light utilization space system 400 is suitable for applications where there is no problem even if an image is reflected on the wall surface 130, for example, a plant factory or a warehouse. Further, in the light utilization space system 400, the floor surface 120 can be formed of a high light reflection type coated steel plate or a high light diffusion type coated steel plate, and in this case, compared with the case where the floor surface 120 does not perform high light reflection or high light diffusion. , The overall illuminance of the space 150 is further improved.

上記のような光活用空間システム１００は、光源１４０から発せられる光が天井面１１０と壁面１３０の一部で反射されたり拡散されたりするために、光が天井面１１０と床面１２０と壁面１３０で囲まれる空間１５０に広がりやすくなり、光源１４０の発光強度や配置の影響を少なくして該空間１５０の明るさを調整することができ、省エネルギー化を図りやすく、光源の位置の自由度が高い。 In the light utilization space system 100 as described above, the light emitted from the light source 140 is reflected or diffused by a part of the ceiling surface 110 and the wall surface 130, so that the light is reflected or diffused by the ceiling surface 110, the floor surface 120, and the wall surface 130. It becomes easy to spread to the space 150 surrounded by, the brightness of the space 150 can be adjusted by reducing the influence of the light emission intensity and the arrangement of the light source 140, it is easy to save energy, and the degree of freedom of the position of the light source is high. ..

上記のような光活用空間システム１００は、光学系コンピュータシュミレーションを用いて高光反射型塗装鋼板と高光拡散型塗装鋼板の配置や使用量及びその他の部材（光源１４０や高光反射及び高光拡散でない部材）の配置や量を設計することができる。この場合、実物を作成することなく、照度やその他の光学的な物理量の把握が可能となる。 The light utilization space system 100 as described above uses an optical system computer simulation to arrange and use a high light reflection type coated steel sheet and a high light diffusion type coated steel sheet, and other members (light source 140 and members that are not high light reflection and high light diffusion). You can design the arrangement and quantity of. In this case, it is possible to grasp the illuminance and other optical physical quantities without creating the real thing.

本実施形態の光活用空間システム１００では、天井面１１０や壁面１３０の一部をクロスで形成してもよい。また天井面１１０の一部や床面１２０の一部を高光拡散型塗装鋼板や高光反射型塗装鋼板で形成してもよい。また光源１４０の位置も天井面１１０に設けるだけでなく、壁面１２０に設けてもよく、光源１４０が複数存在していても良い。 In the light utilization space system 100 of the present embodiment, a part of the ceiling surface 110 and the wall surface 130 may be formed of a cloth. Further, a part of the ceiling surface 110 and a part of the floor surface 120 may be formed of a high light diffusion type coated steel plate or a high light reflection type coated steel plate. Further, the position of the light source 140 may be provided not only on the ceiling surface 110 but also on the wall surface 120, and a plurality of light sources 140 may exist.

以下、本発明を実施例によって具体的に説明する。 Hereinafter, the present invention will be specifically described with reference to Examples.

光活用空間システム５００として会議室を形成した。この会議室は、図７Ａ及び図７Ｂに示すように、床面５０１と、４つの壁面５０２、５０３、５０４、５０５と、天井面５０６とを有しており、略直方体に形成されている。会議室の長手方向の寸法Ｄ１は７０００ｍｍ、短手方向の寸法Ｄ２は３１６０ｍｍに形成されている。また床面５０１と天井面５０６の間の寸法は２，７００ｍｍである。
壁面５０２にはドアが設けられており、壁面５０５には窓が設けられている。窓はブラインドが設けられている。また会議室５００の略中央部には２つのテーブル５０７が設けられている。テーブル５０７の上面の色は白である。床面５０４からテーブル５０７の上面までの寸法は７４０ｍｍである。また天井面５０６には６器の照明器具５０８、５０９、５１０、５１１、５１２、５１３が設けられている。照明器具５０８～５１３は２列３行に配置されている。また各照明器具５０８～５１３にはＬＥＤ５１５が２本ずつ設けられている。 A conference room was formed as a light utilization space system 500. As shown in FIGS. 7A and 7B, this conference room has a floor surface 501, four wall surfaces 502, 503, 504, 505, and a ceiling surface 506, and is formed in a substantially rectangular parallelepiped shape. The dimension D1 in the longitudinal direction of the conference room is formed to be 7000 mm, and the dimension D2 in the lateral direction is formed to be 3160 mm. The dimension between the floor surface 501 and the ceiling surface 506 is 2,700 mm.
A door is provided on the wall surface 502, and a window is provided on the wall surface 505. The windows are blinded. Further, two tables 507 are provided in the substantially central portion of the conference room 500. The color of the upper surface of the table 507 is white. The dimension from the floor surface 504 to the upper surface of the table 507 is 740 mm. Further, the ceiling surface 506 is provided with six lighting fixtures 508, 509, 510, 511, 512, 513. The lighting fixtures 508 to 513 are arranged in 2 columns and 3 rows. Further, two LEDs 515 are provided in each of the lighting fixtures 508 to 513.

床面５０１はグレー色のカーペットで形成されている。天井面５０６は白色に形成されている。窓を設けた壁面５０５はクロス張りで形成されている。その他の３面の壁面５０２、５０３、５０４は各全面が高光拡散型塗装鋼板又は既存の内装用の塗装鋼板のうち反射率の高い塗装鋼板(以下、「内装塗装鋼板」という)で形成されている。なお、壁面５０２に設けられているドアの表面も高光拡散型塗装鋼板又は内装塗装鋼板で形成されている。高光拡散型塗装鋼板は、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率が９０．３％であり、光沢度が１０．９である。内装塗装鋼板は、積分球による、鏡面反射を含まない、波長５５０ｎｍの光の拡散反射率が８０．９％であり、光沢度が３３．０である。なお、拡散反射率や光沢度の測定には、ＫＯＮＩＣＡＭＩＮＯＬＴＡ製の色差計ＣＭ－３７００ｄを使用した。 The floor 501 is made of gray carpet. The ceiling surface 506 is formed in white. The wall surface 505 provided with the window is formed of cloth. The other three wall surfaces 502, 503, and 504 are all formed of a high light diffusion type coated steel plate or a coated steel plate having high reflectance among existing coated steel plates for interior decoration (hereinafter referred to as "interior coated steel plate"). There is. The surface of the door provided on the wall surface 502 is also formed of a high light diffusion type coated steel plate or an interior coated steel plate. The high light diffusion type coated steel sheet has a diffuse reflectance of 90.3% and a glossiness of 10.9, which does not include specular reflection due to an integrating sphere and has a wavelength of 550 nm. The interior coated steel sheet has a diffuse reflectance of 80.9% and a glossiness of 33.0 for light having a wavelength of 550 nm, which does not include specular reflection due to an integrating sphere. A color difference meter CM-3700d manufactured by KONICA MINOLTA was used for measuring the diffuse reflectance and the glossiness.

上記のような会議室の複数の測定点において、照度測定を行う。測定点は２１箇所とし、左列、中列、右列の３つの列と、１行、２行、３行、４行、５行、６行、７行の７つの行とをなすように並んでいる。壁面５０３と左列の間の寸法Ｄ３は４００ｍｍとし、壁面５０５と７行の間の寸法Ｄ４は５００ｍｍとし、隣り合う測定点の間の寸法Ｄ５は１０００ｍｍとする。また、中列２行、中列３行、中列４行、中列５行、中列６行の各測定点は、テーブル５０７の上面に設定し、その他の測定点は床面５０１に設定する。照度測定器としては、共立電気計器（株）製の品番ＭＯＤＥＬ５２０２を使用した。 Illuminance measurement is performed at a plurality of measurement points in the conference room as described above. There are 21 measurement points, so that there are 3 columns, left column, middle column, and right column, and 7 rows, 1 row, 2 rows, 3 rows, 4 rows, 5 rows, 6 rows, and 7 rows. They are lined up. The dimension D3 between the wall surface 503 and the left column is 400 mm, the dimension D4 between the wall surface 505 and the 7th row is 500 mm, and the dimension D5 between adjacent measurement points is 1000 mm. Further, the measurement points of the middle column 2 rows, the middle column 3 rows, the middle column 4 rows, the middle column 5 rows, and the middle column 6 rows are set on the upper surface of the table 507, and the other measurement points are set on the floor surface 501. do. As the illuminance measuring instrument, the product number MODEL 5202 manufactured by Kyoritsu Electric Meter Co., Ltd. was used.

（実施例１）
壁面５０２、５０３、５０４の各全面を高光拡散型塗装鋼板で形成し、照明器具５０８～５１３の全ＬＥＤを点灯した状態で、各測定点における照度を測定した。 (Example 1)
The entire surface of each of the wall surfaces 502, 503, and 504 was formed of a high light diffusion type coated steel plate, and the illuminance at each measurement point was measured with all the LEDs of the luminaires 508 to 513 turned on.

（実施例２）
テーブルの上面をグレー色のテーブルクロスで全面にわたって覆った状態にした。これ以外は、実施例１と同様にして、各測定点における照度を測定した。 (Example 2)
The upper surface of the table was covered with a gray table cloth. Except for this, the illuminance at each measurement point was measured in the same manner as in Example 1.

（実施例３）
３行に並ぶ照明器具５０８～５１３のうち、真ん中に位置する２器の照明器具５０９、５１２のＬＥＤ５１５を消灯し、その他の照明器具のＬＥＤ５１５は点灯した状態にした（図８Ｃ参照）。これ以外は、実施例２と同様にして、各測定点における照度を測定した。 (Example 3)
Of the lighting fixtures 508 to 513 lined up in three rows, the LED 515s of the two lighting fixtures 509 and 512 located in the middle were turned off, and the LED 515s of the other lighting fixtures were turned on (see FIG. 8C). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 2.

なお、図７Ｂ、図８Ａ、図８Ｂ、図８Ｃは、照明器具５０８～５１３のＬＥＤの点灯状態を示している。図７Ｂは照明器具５０８～５１３の全ＬＥＤ５１５を点灯した状態を示している。図８Ａ、図８Ｂ、図８Ｃは、点灯しているＬＥＤ５１５を実線で示し、消灯しているＬＥＤ５１５は点線で示す。 7B, 8A, 8B, and 8C show the lighting states of the LEDs of the lighting fixtures 508 to 513. FIG. 7B shows a state in which all the LEDs 515 of the luminaires 508 to 513 are turned on. 8A, 8B, and 8C show the LED 515 that is lit with a solid line, and the LED 515 that is turned off is shown by a dotted line.

（実施例４）
４列に並ぶＬＥＤのうち、内側２列のＬＥＤを消灯し、その他のＬＥＤは点灯した状態にした（図８Ａ参照）。これ以外は、実施例１と同様にして、各測定点における照度を測定した。 (Example 4)
Of the LEDs lined up in the four rows, the LEDs in the inner two rows were turned off, and the other LEDs were turned on (see FIG. 8A). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 1.

（実施例５）
４列に並ぶＬＥＤのうち、外側２列のＬＥＤを消灯し、その他のＬＥＤは点灯した状態にした（図８Ｂ参照）。これ以外は、実施例１と同様にして、各測定点における照度を測定した。 (Example 5)
Of the LEDs lined up in the four rows, the LEDs in the outer two rows were turned off, and the other LEDs were turned on (see FIG. 8B). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 1.

（実施例６）
３行に並ぶ照明器具５０８～５１３のうち、真ん中に位置する２器の照明器具５０９、５１２のＬＥＤを消灯し、その他の照明器具のＬＥＤは点灯した状態にした（図８Ｃ参照）。これ以外は、実施例１と同様にして、各測定点における照度を測定した。 (Example 6)
Of the lighting fixtures 508 to 513 lined up in three rows, the LEDs of the two lighting fixtures 509 and 512 located in the middle were turned off, and the LEDs of the other lighting fixtures were turned on (see FIG. 8C). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 1.

（実施例７）
４列に並ぶＬＥＤのうち、内側２列のＬＥＤを消灯し、その他のＬＥＤは点灯した状態にした（図８Ａ参照）。これ以外は、実施例２と同様にして、各測定点における照度を測定した。 (Example 7)
Of the LEDs lined up in the four rows, the LEDs in the inner two rows were turned off, and the other LEDs were turned on (see FIG. 8A). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 2.

（実施例８）
４列に並ぶＬＥＤのうち、外側２列のＬＥＤを消灯し、その他のＬＥＤは点灯した状態にした（図８Ｂ参照）。これ以外は、実施例２と同様にして、各測定点における照度を測定した。 (Example 8)
Of the LEDs lined up in the four rows, the LEDs in the outer two rows were turned off, and the other LEDs were turned on (see FIG. 8B). Except for this, the illuminance at each measurement point was measured in the same manner as in Example 2.

（比較例１）
壁面５０２、５０３、５０４の各全面を内装塗装鋼板で形成した。これ以外は、実施例１と同様にして、各測定点における照度を測定した。 (Comparative Example 1)
The entire surface of each of the wall surfaces 502, 503, and 504 was formed of an interior painted steel plate. Except for this, the illuminance at each measurement point was measured in the same manner as in Example 1.

（比較例２）
壁面５０２、５０３、５０４の各全面を内装塗装鋼板で形成した。これ以外は、実施例２と同様にして、各測定点における照度を測定した。 (Comparative Example 2)
The entire surface of each of the wall surfaces 502, 503, and 504 was formed of an interior painted steel plate. Except for this, the illuminance at each measurement point was measured in the same manner as in Example 2.

（比較例３）
壁面５０２、５０３、５０４の各全面を内装塗装鋼板で形成した。これ以外は、実施例３と同様にして、各測定点における照度を測定した。 (Comparative Example 3)
The entire surface of each of the wall surfaces 502, 503, and 504 was formed of an interior painted steel plate. Except for this, the illuminance at each measurement point was measured in the same manner as in Example 3.

上記実施例および比較例の各照度の測定結果を図９～図１３に示す。 The measurement results of each illuminance of the above-mentioned Example and Comparative Example are shown in FIGS. 9 to 13.

図９は、テーブルクロス無し（テーブルの上面は白色）の場合、内装塗装鋼板で形成した会議室（比較例１）に比べ、高光拡散型塗装鋼板で形成した会議室（実施例１）の照度は、会議室の中央部（中列１～７行）及び隅部（左列及び右列の各１～７行）含め、約７％上がり、高光拡散型塗装鋼板の拡散反射による会議室の照度アップが確認できた。 In FIG. 9, when there is no table cloth (the upper surface of the table is white), the illuminance of the conference room formed of the high light diffusion type coated steel plate (Example 1) is higher than that of the conference room formed of the interior coated steel plate (Comparative Example 1). Including the central part (1 to 7 rows in the middle column) and the corners (1 to 7 rows each in the left column and the right column) of the conference room, it increased by about 7%. It was confirmed that the illuminance was increased.

図１０は、什器（テーブル）の種類変更（上面を白色からグレーに変更）による効果を検証したものである。図９の結果と比較し、双方の会議室（実施例２及び比較例２）で全体的に照度は低下したが、内装塗装鋼板で形成した会議室（比較例２）に比べ、高光拡散型塗装鋼板で形成した会議室（実施例２）の照度は、会議室の中央部（中列１～７行）及び隅部（左列及び右列の各１～７行）含め、約６％上がった。 FIG. 10 is a verification of the effect of changing the type of furniture (table) (changing the upper surface from white to gray). Compared with the result of FIG. 9, the illuminance was lowered as a whole in both conference rooms (Example 2 and Comparative Example 2), but higher light diffusion type than the conference room formed of the interior coated steel plate (Comparative Example 2). The illuminance of the conference room (Example 2) formed of the painted steel plate is about 6% including the central part (middle column 1 to 7 rows) and the corner part (1 to 7 rows each of the left column and the right column) of the conference room. It went up.

図１１は、テーブルクロス有り（グレー色）の場合で、真ん中に位置する２器の照明器具５０９、５１２のＬＥＤ５１５を消灯した場合を比較検証したものである。内装塗装鋼板で形成した会議室（比較例３）に比べ、高光拡散型塗装鋼板で形成した会議室（実施例３）の照度は、会議室の中央部（中列１～７行）及び隅部（左列及び右列の各１～７行）含め、約８％上がった。図１０の結果と比較し、約２ポイント差の照度向上が見られ、高光拡散型塗装鋼板の形成によって、照明器具の削減（省エネ）が図れると考えられる。 FIG. 11 is a comparative verification of the case where the table cloth is present (gray color) and the LED 515 of the two lighting fixtures 509 and 512 located in the center is turned off. Compared to the conference room formed of interior painted steel plate (Comparative Example 3), the illuminance of the conference room (Example 3) formed of high light diffusion type coated steel plate is higher in the central part (middle column 1 to 7 rows) and corners of the conference room. It increased by about 8% including the part (1 to 7 rows each in the left column and the right column). Compared with the result of FIG. 10, the illuminance is improved by about 2 points, and it is considered that the reduction (energy saving) of the lighting equipment can be achieved by forming the high light diffusion type coated steel sheet.

図１２及び図１３は、全灯の場合（実施例１及び実施例２）と比較して、照明器具を削減した場合（実施例７、８、３及び実施例４、５、６）の照度ダウンレベルを検証したものである。什器の影響なく、実施例１に比べて実施例７、８、３は一様に照度が下がる傾向であった。また同様に、什器の影響なく、実施例２に比べて実施例４、５、６は一様に照度が下がる傾向であった。 12 and 13 show the illuminance in the case of reducing the number of lighting fixtures (Examples 7, 8 and 3 and Examples 4, 5 and 6) as compared with the case of all lamps (Example 1 and Example 2). This is a verification of the down level. The illuminance of Examples 7, 8 and 3 tended to be uniformly lower than that of Example 1 without the influence of furniture. Similarly, the illuminance of Examples 4, 5 and 6 tended to be uniformly lower than that of Example 2 without the influence of furniture.

また実施例１及び比較例１について、以下の官能試験を行った。 The following sensory tests were performed on Example 1 and Comparative Example 1.

（会議室の明るさ）
実施例１及び比較例１の会議室を使用した５０人に、会議室の明るさを５段階で評価してもらい、ヒアリングによるアンケート回答方式（１人につき１回のアンケート回答）で調査をした。５段階の評価は、明る過ぎる（５）、明るい（４）、ちょうど良い（３）薄暗い（２）、暗い（１）である。 (Brightness of the conference room)
Fifty people who used the conference rooms of Example 1 and Comparative Example 1 were asked to evaluate the brightness of the conference room on a five-point scale, and the survey was conducted using a questionnaire response method (one questionnaire response per person). .. The five-level evaluation is too bright (5), bright (4), just right (3) dim (2), and dark (1).

（壁への像の映り込み）
実施例１及び比較例１の会議室を使用した５０人に、会議室の壁面５０２、５０３、５０４への像の映り込みを５段階で評価してもらい、ヒアリングによるアンケート回答方式（１人につき１回のアンケート回答）で調査をした。５段階の評価は、はっきり映り込む（５）、映り込む（４）、少し映り込む（３）、あまり映り込まない（２）、全く映り込まない（１）である。 (Reflection of the image on the wall)
Fifty people who used the conference rooms of Example 1 and Comparative Example 1 were asked to evaluate the reflection of the image on the wall surfaces 502, 503, and 504 of the conference room on a five-point scale, and a questionnaire response method by hearing (per person). The survey was conducted by answering one questionnaire). The five-level evaluation is clearly reflected (5), reflected (4), slightly reflected (3), not reflected very much (2), and not reflected at all (1).

結果を図１４Ａ及び図１４Ｂに示す。 The results are shown in FIGS. 14A and 14B.

「会議室の明るさ」に関しては、特に「明るい（段階（４））」の回答が、高光拡散型塗装鋼板で仕上げた会議室（実施例１）の空間が、内装塗装鋼板で仕上げた会議室（比較例１）の空間より人数が多く、照度測定結果の傾向と同様、実施例１は比較例１に比べて、壁の光拡散効果による会議室全体の明るさが向上したと考えられる。 Regarding "brightness of the conference room", the answer of "bright (stage (4))" was that the space of the conference room (Example 1) finished with high light diffusion type painted steel plate was finished with interior painted steel plate. The number of people was larger than the space of the room (Comparative Example 1), and it is considered that the brightness of the entire conference room was improved in Example 1 due to the light diffusion effect of the wall as compared with Comparative Example 1, as in the tendency of the illuminance measurement result. ..

また「壁への像の映り込み」に関しては、高光拡散型塗装鋼板で仕上げた会議室（実施例１）は、内装塗装鋼板で仕上げた会議室（比較例１）に比べて、壁への像の映り込みが抑制されている結果となり、快適性が向上したと考えられる。 Regarding "reflection of the image on the wall", the conference room finished with the high light diffusion type painted steel plate (Example 1) is compared with the conference room finished with the interior painted steel plate (Comparative Example 1). As a result of suppressing the reflection of the image, it is considered that the comfort was improved.

１００光活用空間システム
１１０天井面
１３０壁面
１４０光源
１５０空間
２００光活用空間システム
２１０高光拡散型塗装鋼板
２３０高光反射型塗装鋼板
２４０高光拡散型塗装鋼板
３００光活用空間システム
３１０高光反射型塗装鋼板
３３０高光拡散型塗装鋼板
４００光活用空間システム
４１０高光拡散型塗装鋼板
４３０高光反射型塗装鋼板 100 Light utilization space system 110 Ceiling surface 130 Wall surface 140 Light source 150 Space 200 Light utilization space system 210 High light diffusion type painted steel sheet 230 High light reflection type painted steel sheet 240 High light diffusion type painted steel sheet 300 Light utilization space system 310 High light reflection type painted steel sheet 330 High light Diffuse type coated steel sheet 400 Light utilization space system 410 High light diffusion type coated steel sheet 430 High light reflection type coated steel sheet

Claims

A light utilization space system including a ceiling surface, a wall surface, and a light source, in which light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface.
The light source is a lighting fixture arranged on the ceiling surface.
The entire surface of the ceiling surface is formed of the first high light diffusion type coated steel sheet, the lower part of the wall surface is formed of the high light reflection type coated steel plate, and the second high light is above the high light reflection type coated steel plate of the wall surface. Diffuse type painted steel plate is arranged,
The high light reflection type coated steel sheet has a 60 degree mirror surface gloss specified by JIS K 5600-4-7 of 90% or more.
The first and second high light diffusion type coated steel sheets have a diffuse reflectance of 85% or more of light having a wavelength of 550 nm, which does not include specular reflection due to an integrating sphere.
The 60-degree mirror surface gloss of the first and second high-light diffusion type coated steel sheets is smaller than the 60-degree mirror surface gloss of the high-light reflection type coated steel sheet, and is less than 5 to 40%.
A photoactive coating film containing a photocatalyst is provided on the outermost surfaces of the high light reflection type coated steel sheet, the first high light diffusion type coated steel sheet, and the second high light diffusion type coated steel sheet.
A light utilization space system characterized by this.

A light utilization space system including a ceiling surface, a wall surface, and a light source, in which light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface.
The light source is a lighting fixture arranged on the ceiling surface.
The entire surface of the ceiling surface is formed of a high light reflection type coated steel plate, and the entire surface of the wall surface is formed of a high light diffusion type coated steel plate.
The high light reflection type coated steel sheet has a 60 degree mirror surface gloss specified by JIS K 5600-4-7 of 90% or more.
The high light diffusion type coated steel sheet has a diffuse reflectance of 85% or more of light having a wavelength of 550 nm, which does not include specular reflection due to an integrating sphere.
The 60-degree mirror surface gloss of the high-light diffusion type coated steel sheet is smaller than the 60-degree mirror surface gloss of the high-light reflection type coated steel sheet, and is less than 5 to 40%.
A photoactive coating film containing a photocatalyst is provided on the outermost surfaces of the high light reflection type coated steel sheet and the high light diffusion type coated steel sheet.
A light utilization space system characterized by this.

A light utilization space system including a ceiling surface, a wall surface, and a light source, in which light emitted from the light source is reflected by at least one of the ceiling surface and the wall surface.
The light source is a lighting fixture arranged on the ceiling surface.
The entire surface of the ceiling surface is formed of a high light diffusion type coated steel plate, and the entire surface of the wall surface is formed of a high light reflection type coated steel plate.
The high light reflection type coated steel sheet has a 60 degree mirror surface gloss specified by JIS K 5600-4-7 of 90% or more.
The high light diffusion type coated steel sheet has a diffuse reflectance of 85% or more of light having a wavelength of 550 nm, which does not include specular reflection due to an integrating sphere.
The 60-degree mirror surface gloss of the high-light diffusion type coated steel sheet is smaller than the 60-degree mirror surface gloss of the high-light reflection type coated steel sheet, and is less than 5 to 40%.
A photoactive coating film containing a photocatalyst is provided on the outermost surfaces of the high light reflection type coated steel sheet and the high light diffusion type coated steel sheet.
A light utilization space system characterized by this.