JP4821598B2 - Indoor lighting design method and lighting control system - Google Patents

Indoor lighting design method and lighting control system Download PDF

Info

Publication number
JP4821598B2
JP4821598B2 JP2006348626A JP2006348626A JP4821598B2 JP 4821598 B2 JP4821598 B2 JP 4821598B2 JP 2006348626 A JP2006348626 A JP 2006348626A JP 2006348626 A JP2006348626 A JP 2006348626A JP 4821598 B2 JP4821598 B2 JP 4821598B2
Authority
JP
Japan
Prior art keywords
brightness
luminance
lighting
correction
sensation index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
JP2006348626A
Other languages
Japanese (ja)
Other versions
JP2008159487A (en
Inventor
雅行 井口
彌 岩井
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Electric Works Co Ltd
Original Assignee
Panasonic Corp
Matsushita Electric Works Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Works Ltd filed Critical Panasonic Corp
Priority to JP2006348626A priority Critical patent/JP4821598B2/en
Publication of JP2008159487A publication Critical patent/JP2008159487A/en
Application granted granted Critical
Publication of JP4821598B2 publication Critical patent/JP4821598B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Circuit Arrangement For Electric Light Sources In General (AREA)

Description

本発明は、屋内照明設計方法、および照明制御システムに関するものである。   The present invention relates to an indoor lighting design method and a lighting control system.

一室複数灯での間接照明や壁面照明を主体とするデザイン性の高い部屋において、部屋の条件を考慮したうえで、部屋の用途に合った明るさ感の照明環境を実現する照明器具、照明器具の組み合わせを、照明の専門知識を持たない一般ユーザが手軽に選択できる屋内照明設計方法として、「屋内の照明空間において照明器具の光源とは別の光源を用いて表面の輝度が変化する色票を部屋内に備えて、観測者から見た色票が部屋内に置かれた物体として認識される輝度のレベルと自ら発光している光源として認識される輝度のレベルとの中間である不自然な色の見え方になるときの色票の輝度である色モード境界輝度」との相関関係に基づいて、照明空間の明るさ感を表す「明るさ感覚指標」を照明器具個別に設定し、照明器具個別に設定した各明るさ感覚指標の和が、その部屋に必要な明るさ感覚指標となるように、照明器具を組み合わせる方法がある（例えば、特許文献１参照）。
特開２００６−２６９３７８号公報 Lighting equipment and lighting that achieves a lighting environment that matches the room's usage in a highly designed room mainly composed of indirect lighting with multiple lights in a room and wall lighting. As an indoor lighting design method that can be easily selected by a general user who does not have lighting expertise, a combination of fixtures can be selected as a color that changes the brightness of the surface using a light source that is different from the light source of the lighting fixture in an indoor lighting space. The color chart seen from the observer is an intermediate between the luminance level recognized as an object placed in the room and the luminance level recognized as a light source that emits light. Based on the correlation with `` color mode boundary luminance, which is the luminance of the color chart when natural colors appear, '' a `` brightness sensation index '' that represents the brightness of the lighting space is set for each lighting fixture. , Lighting fixtures individually set The sum of the brightness feeling index is, so that the brightness feeling index needed in the room, there is a method of combining luminaire (e.g., see Patent Document 1).
JP 2006-269378 A

しかしながら、上記従来の明るさ感覚指標では、昼光の入射する窓面等の高輝度部が存在する照明空間は想定していない。一般に、窓面等の高輝度部が室内に存在する場合、その高輝度部に目が順応するために、高輝度部がない場合に比べて照明空間の印象は暗くなる。すなわち、同一の明るさ感覚指標に対して感じる照明空間の明るさ感が、高輝度部がない場合に比べて減少し、このような高輝度部の存在によって影響を受ける明るさ感覚指標に基づく屋内照明設計方法や照明制御装置では、適切な明るさ感を確保することができなかった。   However, the conventional brightness sensation index does not assume an illumination space in which a high luminance part such as a window surface on which daylight enters is present. In general, when a high-luminance part such as a window surface exists in the room, the eyes adapt to the high-luminance part, so that the impression of the illumination space becomes darker than when there is no high-luminance part. That is, the brightness feeling of the lighting space that is felt for the same brightness sensation index is reduced compared to the case where there is no high brightness part, and is based on the brightness sensation index that is affected by the presence of such a high brightness part. In the indoor lighting design method and the lighting control device, it was not possible to ensure an appropriate brightness.

本発明は、上記事由に鑑みてなされたものであり、その目的は、高輝度部が存在する照明空間において目の順応を考慮した適切な明るさ感を確保することができる屋内照明設計方法、および照明制御システムを提供することにある。   The present invention has been made in view of the above-mentioned reasons, and the purpose thereof is an indoor lighting design method capable of ensuring an appropriate brightness feeling in consideration of adaptation to the eyes in an illumination space where a high-luminance portion exists, And providing a lighting control system.

請求項１の発明は、屋内の照明空間において照明器具の光源とは別の光源を用いて表面の輝度が変化する色票を部屋内に備えて、観測者から見た色票が部屋内に置かれた物体として認識される輝度のレベルと自ら発光している光源として認識される輝度のレベルとの中間である不自然な色の見え方になるときの色票の輝度である色モード境界輝度との相関関係に基づいて、照明空間の明るさ感を表す補正前明るさ感覚指標を規定し、高輝度部が存在する照明空間で当該高輝度部に観測者の目が順応することによって同一の補正前明るさ感覚指標に対して観測者が感じる照明空間の明るさ感の減少分を補正する補正係数を、補正前明るさ感覚指標に乗じることで補正後明るさ感覚指標を規定し、補正後明るさ感覚指標を用いて屋内照明を設計することを特徴とする。   According to the first aspect of the present invention, a color chart in which the luminance of the surface changes using a light source different from the light source of the lighting fixture in the indoor illumination space is provided in the room, and the color chart viewed from the observer is in the room. Color mode boundary, which is the brightness of the color chart when an unnatural color is seen, which is halfway between the brightness level recognized as a placed object and the brightness level recognized as a light source that emits light Based on the correlation with brightness, pre-correction brightness sensation index that represents the brightness of the lighting space is defined, and the observer's eyes adapt to the high brightness area in the lighting space where the high brightness area exists. The post-correction brightness sensation index is defined by multiplying the pre-correction brightness sensation index by a correction factor that corrects the decrease in brightness sensation in the lighting space that the observer feels for the same pre-correction brightness sensation index. Design indoor lighting using corrected brightness sensation indicators It is characterized in.

この発明によれば、高輝度部の存在に目が順応することの影響を補正した明るさ感覚指標を得ることができるので、高輝度部が存在する照明空間において目の順応を考慮して適切な明るさ感を確保した屋内照明を設計することができる。   According to the present invention, it is possible to obtain a brightness sensation index that corrects the effect of the eyes adapting to the presence of the high-intensity part. Therefore, it is appropriate to consider the adaptation of the eyes in the illumination space in which the high-intensity part exists. It is possible to design indoor lighting that ensures a high level of brightness.

請求項２の発明は、請求項１において、前記高輝度部が屋内と屋外との間に設けられた窓面である場合、観測者の視野内における窓面の割合と、屋外の全天空照度とに基づいて、前記補正係数を設定することを特徴とする。   A second aspect of the present invention is that, in the first aspect, when the high brightness portion is a window surface provided between the indoor and the outdoor, the ratio of the window surface in the field of view of the observer and the total sky illuminance outdoors. Based on the above, the correction coefficient is set.

この発明によれば、高輝度部が窓面である場合に補正係数の設定を行うことができる。   According to the present invention, the correction coefficient can be set when the high luminance part is a window surface.

請求項３の発明は、屋内の照明空間を照明する照明器具と、照明器具を調光制御する制御手段と、屋内の照明空間において照明器具の光源とは別の光源を用いて表面の輝度が変化する色票を部屋内に備えて、観測者から見た色票が部屋内に置かれた物体として認識される輝度のレベルと自ら発光している光源として認識される輝度のレベルとの中間である不自然な色の見え方になるときの色票の輝度である色モード境界輝度との相関関係に基づいて、照明空間の明るさ感を表す補正前明るさ感覚指標を計測する明るさ感覚指標計測手段と、高輝度部が存在する照明空間で当該高輝度部に観測者の目が順応することによって同一の補正前明るさ感覚指標に対して観測者が感じる照明空間の明るさ感の減少分を補正する補正係数を導出する補正係数導出手段と、補正係数を補正前明るさ感覚指標に乗じることで補正後明るさ感覚指標を導出する明るさ感覚指標補正手段とを備え、制御手段は、補正後明るさ感覚指標が目標値となるように照明装置を調光制御することを特徴とする。   According to the invention of claim 3, the luminance of the surface is adjusted by using a lighting device that illuminates an indoor lighting space, a control unit that performs dimming control of the lighting device, and a light source that is different from the light source of the lighting device in the indoor lighting space. A color chart that changes is provided in the room, and the color chart seen by the observer is between the level of brightness that is recognized as an object placed in the room and the level of brightness that is recognized as a light source that emits light. The brightness that measures the pre-correction brightness sensation index that represents the brightness of the lighting space based on the correlation with the color mode boundary brightness that is the brightness of the color chart when the unnatural color looks like A sense of brightness in the illumination space that the observer feels for the same pre-correction brightness sensation index as the observer's eyes adjust to the high-intensity part in the illumination space in which the sensory indicator measurement means and the high-intensity part exist Correction unit for deriving a correction coefficient to correct the decrease in Derivation means and brightness sensation index correction means for deriving the corrected brightness sensation index by multiplying the correction factor by the brightness sensation index before correction, and the control means includes the corrected brightness sensation index as a target value. As described above, the lighting device is dimmed and controlled.

この発明によれば、高輝度部の存在に目が順応することの影響を補正した明るさ感覚指標を得ることができるので、高輝度部が存在する照明空間において目の順応を考慮して適切な明るさ感を確保した調光制御を行うことができる。   According to the present invention, it is possible to obtain a brightness sensation index that corrects the effect of the eyes adapting to the presence of the high-intensity part. Therefore, it is appropriate to consider the adaptation of the eyes in the illumination space in which the high-intensity part exists. Light control can be performed while ensuring a high brightness feeling.

請求項４の発明は、請求項３において、前記高輝度部は、屋内と屋外との間に設けられた窓面であって、窓面の面積を可変とする遮光装置を具備し、前記補正係数導出手段は、観測者の視野内における窓面の割合と、屋外の全天空照度とに基づいて、前記補正係数を導出し、前記制御手段は、補正後明るさ感覚指標が所定値となるように、照明器具の調光と、窓面の遮光装置の動作とを連動制御することを特徴とする。   According to a fourth aspect of the present invention, in the third aspect, the high-luminance portion is a window surface provided between the indoor and the outdoor, and includes a light-shielding device that can change an area of the window surface, and the correction. The coefficient deriving means derives the correction coefficient based on the ratio of the window surface in the observer's visual field and the outdoor sky illuminance, and the control means sets the corrected brightness sensation index to a predetermined value. Thus, the dimming of the lighting fixture and the operation of the light shielding device on the window surface are controlled in conjunction.

この発明によれば、高輝度部が窓面である場合に補正係数の設定を行うことができ、さらに照明器具の調光と遮光装置の動作とを連動制御することで、調光範囲が広がる。   According to the present invention, the correction coefficient can be set when the high-luminance part is a window surface, and the dimming range can be expanded by interlockingly controlling the dimming of the lighting fixture and the operation of the shading device. .

以上説明したように、本発明では、高輝度部が存在する照明空間において目の順応を考慮した適切な明るさ感を確保することができる屋内照明設計方法、および照明制御システムを提供することができるという効果がある。   As described above, according to the present invention, it is possible to provide an indoor lighting design method and a lighting control system capable of ensuring an appropriate brightness feeling in consideration of adaptation of eyes in an illumination space where a high-luminance portion exists. There is an effect that can be done.

以下、本発明の実施の形態を図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
本実施形態は、屋内空間に照明器具を設置しようとする場合に、所要の明るさや雰囲気を実現するためには、どのような照明器具を設置する必要があるのかを決定するための屋内照明設計方法に関するものである。 (Embodiment 1)
In this embodiment, when a lighting fixture is to be installed in an indoor space, an indoor lighting design for determining what type of lighting fixture needs to be installed in order to achieve the required brightness and atmosphere. It is about the method.

「明るさ感覚指標」とは、照明空間を観察したときに該空間に対して感じられる「明るさ」の総合評価であり、本発明では、この「明るさ感覚指標」を定量的に規定する明るさ感覚指標規定方法として、照明認識視空間の概念における「色モード境界輝度」（参考文献１：照明認識視空間の明るさサイズの測定による実環境における空間の明るさ感の評価、照明学会誌、第８６巻第１１号、２００２、Ｐ８３０〜８３６、山口他）との相関関係に基づいて規定している。ここで、「色モード境界輝度」とは、照明された部屋に置かれた色票（以下、テストパッチと呼ぶ）を観測者（被験者）から見た見え方が、その部屋内に置かれた物体（物体色）として認識される輝度のレベルと自ら発光している光源（光源色）として認識される輝度のレベルとの中間である、その部屋に置かれた物体としては不自然な色の見え方になる輝度のレベルのことであり、照明された部屋の明るさ感を定量的に表すものである。   The “brightness sensation index” is a comprehensive evaluation of “brightness” that can be felt with respect to the space when the illumination space is observed. In the present invention, the “brightness sensation index” is defined quantitatively. “Color mode boundary luminance” in the concept of illumination-recognized visual space (Reference 1: Evaluation of the sense of brightness in the real environment by measuring the brightness size of the illumination-recognized visual space; Magazine, Vol. 86, No. 11, 2002, P830-836, Yamaguchi et al.). Here, “color mode boundary luminance” means that a color chart (hereinafter referred to as a test patch) placed in an illuminated room is viewed from an observer (subject) and placed in that room. It is an intermediate color between the brightness level recognized as an object (object color) and the brightness level recognized as a light source that emits light (light source color). This is the level of luminance that is visible, and it quantitatively represents the brightness of the illuminated room.

また、不均一な照明環境において色モード境界輝度の加法性が成り立つことが示されており（参考文献２：不均一な照明環境における空間の明るさ感の加法性、第３６回照明学会全国大会講演論文集、Ｐ１５４、２００３、山口他）、ある照明環境Ｋ１が、照明環境Ｋ２とＫ３との和であるとき、照明環境Ｋ２，Ｋ３における各々の色モード境界輝度の和で照明環境Ｋ１における色モード境界輝度が予測できることが実証されている。   It has also been shown that color mode boundary luminance additivity holds in non-uniform lighting environments (Reference 2: Additivity of spatial brightness in non-uniform lighting environments, 36th National Congress of the Illuminating Society of Japan) Proceedings, P154, 2003, Yamaguchi et al.) When a certain lighting environment K1 is the sum of the lighting environments K2 and K3, the color in the lighting environment K1 is the sum of the color mode boundary luminances in the lighting environments K2 and K3. It has been demonstrated that mode boundary luminance can be predicted.

以上から、照明認識視空間の概念における「色モード境界輝度」によって、空間の明るさ感を定量的に把握することができ、ある照明器具を設置した部屋の明るさ感を規定する「明るさ感覚指標」を設定することが技術的に可能であるといえる。   From the above, the “color mode boundary luminance” in the concept of illumination-recognition visual space can quantitatively grasp the sense of brightness of the space, and “brightness” that defines the sense of brightness of the room where a certain luminaire is installed It can be said that it is technically possible to set a “sensory index”.

この色モード境界輝度設定には、図２に示すテストパッチ輝度提示装置１を使用する。テストパッチ輝度提示装置１は、設置プレート１ｇ上に設置された、光源にハロゲン電球を用いたスライドプロジェクターで構成される光源システム１ｂを収納した光源ボックス１ａ、回転濃度フィルター１ｄを収納した光学系ボックス１ｃ、可動式平面ミラー１ｅ、支持具１ｆによって設置プレート１ａから１１００ｍｍの高さに設けられたテストパッチＴとからなる。テストパッチＴは、光源システム１ｂから回転濃度フィルター１ｄを通った光が可動式平面ミラー１ｅで反射して局所照明されている。観測者は、手元のスイッチで回転濃度フィルター１ｄを回転させることで自由にテストパッチＴの輝度を調節することが可能である。また、テストパッチＴは照明の影響をほとんど受けないように照射面を下向きに斜め４５°に傾けてある。テストパッチＴは、６０ｍｍ×６０ｍｍの大きさで、被照射面はＮ５，グレーの紙面からなる。   For the color mode boundary luminance setting, the test patch luminance presentation device 1 shown in FIG. 2 is used. The test patch luminance presentation device 1 includes a light source box 1a that houses a light source system 1b that is a slide projector using a halogen light bulb as a light source, and an optical box that houses a rotational density filter 1d. 1c, a movable flat mirror 1e, and a test patch T provided at a height of 1100 mm from the installation plate 1a by a support 1f. The test patch T is locally illuminated by the light passing through the rotational density filter 1d from the light source system 1b reflected by the movable plane mirror 1e. The observer can freely adjust the brightness of the test patch T by rotating the rotational density filter 1d with a switch at hand. Further, the test patch T is inclined at an angle of 45 ° downward so that the irradiation surface is hardly affected by illumination. The test patch T has a size of 60 mm × 60 mm, and the irradiated surface is made of N5 and gray paper.

上記テストパッチ輝度提示装置１を操作して測定された「色モード境界輝度Ａ」から、下記［数１］に基づいて「明るさ感覚指標Ｆ´」を導出し、その単位は［ｆｅｕ（フー）］と称する。なお、「色モード境界輝度Ａ」の単位は［ｃｄ／ｍ２］である。 From the “color mode boundary luminance A” measured by operating the test patch luminance presentation device 1, a “brightness sensation index F ′” is derived based on the following [Equation 1], and the unit is “feu” )]. The unit of “color mode boundary luminance A” is [cd / m 2 ].

Figure 0004821598
Figure 0004821598

以下、この「色モード境界輝度Ａ」との相関関係に基づいて規定された「明るさ感覚指標Ｆ´」を用いる屋内照明設計方法の概略について説明する。   Hereinafter, an outline of the indoor lighting design method using the “brightness sensation index F ′” defined based on the correlation with the “color mode boundary luminance A” will be described.

まず、図３に示す、部屋サイズ：３５００ｍｍ×３５００ｍｍ、天井高さ：２５００ｍｍの８畳実物大の住宅居室Ｒａを標準条件の測定環境として準備し、天井および壁の３面は白のクロス仕上げ、壁の一面は白のロールスクリーン２で間仕切りを施し、床はダークブラウンのフローリング仕上げであり、天井および壁の反射率を８０％、床の反射率を１０％とする。   First, as shown in FIG. 3, an 8-tatami real-sized residential room Ra having a room size of 3500 mm × 3500 mm and a ceiling height of 2500 mm is prepared as a measurement environment under standard conditions, and the three surfaces of the ceiling and the wall are finished with a white cloth. One side of the wall is partitioned by a white roll screen 2 and the floor has a dark brown flooring finish. The ceiling and wall reflectivity is 80%, and the floor reflectivity is 10%.

図２に示すテストパッチ輝度提示装置１を用いて、住宅居室Ｒａ内に様々な照明器具Ｌ１〜Ｌｎを単体で個別に配置した場合の「色モード境界輝度Ａ１〜Ａｎ」を測定し、上記［数１］に基づいて照明器具Ｌ１〜Ｌｎ個別の「明るさ感覚指標Ｆ１´〜Ｆｎ´」を算出する。   Using the test patch luminance presentation device 1 shown in FIG. 2, the “color mode boundary luminances A1 to An” when various lighting fixtures L1 to Ln are individually arranged in the residential room Ra are measured, and the above [ Based on Equation 1, the individual “brightness sensation indicators F1 ′ to Fn ′” of the lighting fixtures L1 to Ln are calculated.

次に、上記測定環境に、乳白アクリルカバーが付いた天井直付のシーリングライトである照明器具Ｌｒ（図３中の破線）を部屋中央に設置する。照明器具Ｌｒは、２５％〜１００％の範囲で調光可能であり、観測者の主観評価によって、ちょうどよい明るさとなるように調光した場合の「色モード境界輝度Ａｒ」を測定し、［数１］より上記測定環境における「所要の明るさ感覚指標Ｆｒ´」を設定する。   Next, a lighting fixture Lr (dashed line in FIG. 3), which is a ceiling-mounted ceiling light with a milky white acrylic cover, is installed in the center of the room in the measurement environment. The luminaire Lr can be dimmed in the range of 25% to 100%, and measures the “color mode boundary luminance Ar” when dimming so as to obtain just the right brightness according to the subjective evaluation of the observer. From “Equation 1”, the “required brightness sensation index Fr ′” in the measurement environment is set.

次に、部屋の形状、内装レイアウト、大きさより照明器具の設置位置を決定し、各設置位置に配置する照明器具の「明るさ感覚指標Ｆ´」の和が「所要の明るさ感覚指標Ｆｒ´」となるように、照明器具Ｌ１〜Ｌｎから照明器具を選択する。例えば、照明器具Ｌ１０，Ｌ１５，Ｌｎを選択して、各照明器具の明るさ感覚指標Ｆ１０´，Ｆ１５´，Ｆｎ´とすると、Ｆｒ´＝［Ｆ１０´＋Ｆ１５´＋Ｆｎ´］となればよい。   Next, the installation position of the luminaire is determined from the shape, interior layout, and size of the room, and the sum of the “brightness sensation index F ′” of the luminaire arranged at each installation position is “the required brightness sensation index Fr ′. The lighting fixture is selected from the lighting fixtures L1 to Ln. For example, when the lighting fixtures L10, L15, and Ln are selected and the brightness sense indexes F10 ′, F15 ′, and Fn ′ of the respective lighting fixtures are selected, Fr ′ = [F10 ′ + F15 ′ + Fn ′] may be satisfied.

このように、「色モード境界輝度Ａ」との相関関係に基づいて「明るさ感覚指標Ｆ´」を規定することで、「所要の明るさ感覚指標Ｆｒ´」が設定された部屋に対して、各照明器具の「明るさ感覚指標の和」が前記部屋の「所要の明るさ感覚指標Ｆｒ´」となるように照明器具を組み合わせれば、一室複数灯での間接照明や壁面照明を主体とする部屋においても、部屋の条件を考慮したうえで、部屋の用途に合った所要の明るさ感の照明環境を実現することができる。   As described above, by defining the “brightness sensation index F ′” based on the correlation with the “color mode boundary luminance A”, the room where the “required brightness sensation index Fr ′” is set. If the lighting fixtures are combined so that the “sum of brightness sensation indicators” of each lighting fixture becomes the “required brightness sensation indicator Fr ′” of the room, indirect lighting or wall lighting with a plurality of lamps in one room is possible. Even in the main room, it is possible to realize a lighting environment having a required brightness according to the use of the room in consideration of the room conditions.

すなわち、カタログ等に記載された照明器具個々の「明るさ感覚指標」の値に基づく足し算を行うことで、専門の知識を持たない一般ユーザでも容易に、所要の明るさ感の照明環境を実現する照明器具の組み合わせを決定することができるのである。   In other words, by performing addition based on the value of “brightness sensation index” for each lighting fixture described in the catalog, etc., even a general user without specialized knowledge can easily achieve a lighting environment with the required brightness. The combination of lighting fixtures to be determined can be determined.

しかしながら、上記方法では照明器具毎に「色モード境界輝度Ａ」の測定を行う必要があり、多くの工数がかかる上に、「色モード境界輝度Ａ」の測定が個人の感覚に基づく測定であるので、個人毎の感覚のぶれによる測定誤差が大きくなる可能性があった。   However, in the above method, it is necessary to measure the “color mode boundary luminance A” for each lighting fixture, which takes a lot of man-hours, and the measurement of the “color mode boundary luminance A” is a measurement based on an individual sense. Therefore, there is a possibility that measurement errors due to sensory blur for each individual may increase.

そこで、様々な条件での「色モード境界輝度Ａ」の実測データと、前記様々な条件での観測者の視野内における照明空間の特定領域の光源輝度を除く「幾何平均輝度」との相関関係に着目し、その相関関係から導出される実験式に基づいて、ある条件を設定した場合の「明るさ感覚指標Ｆ´」を規定する方法について、以下説明する。   Therefore, correlation between the measured data of “color mode boundary luminance A” under various conditions and “geometric mean luminance” excluding the light source luminance of a specific area of the illumination space within the observer's field of view under the various conditions. A method for defining “brightness sensation index F ′” when a certain condition is set based on an empirical formula derived from the correlation will be described below.

まず、図３に示す住宅居室Ｒａにおいて、ロールスクリーン２を右手に臨む背面壁Ｒａ１側の略中央を観測者の視点位置Ｐとする。   First, in the residential room Ra shown in FIG. 3, an approximate center on the back wall Ra1 side facing the roll screen 2 on the right hand is set as the observer's viewpoint position P.

使用する照明器具は、間接照明系の３台の照明器具Ｌ１，Ｌ２，Ｌ３を、観測者からは光源が見えないように配置している。照明器具Ｌ１としては、バーチカルコーナーライトを観測者の視点位置Ｐに対面する正面壁Ｒａ２の右コーナー近傍に配置する。照明器具Ｌ２としては、床置のホリゾントライトを正面壁Ｒａ２の左コーナー近傍に配置する。照明器具Ｌ３としては、フロアスタンドを背面壁Ｒａ１の左コーナー近傍に配置する。なお、これらの各照明器具Ｌ１，Ｌ２，Ｌ３は、観測者の手元に配置した調光器３によって調光可能である。   The lighting fixtures used are three lighting fixtures L1, L2, and L3 of the indirect illumination system that are arranged so that the light source cannot be seen by the observer. As the lighting fixture L1, a vertical corner light is arranged in the vicinity of the right corner of the front wall Ra2 facing the observer's viewpoint position P. As the lighting fixture L2, a floor-mounted horizon light is arranged in the vicinity of the left corner of the front wall Ra2. As lighting fixture L3, a floor stand is arrange | positioned in the left corner vicinity of back wall Ra1. In addition, each of these lighting fixtures L1, L2, and L3 can be dimmed by the dimmer 3 arranged at the hand of the observer.

まず、テストパッチＴが背面壁Ｒａ１から２５００ｍｍに位置するようにテストパッチ輝度提示装置１を設置し、各照明器具Ｌ１，Ｌ２，Ｌ３単体で点灯した場合の「色モード境界輝度Ａ１，Ａ２，Ａ３」を測定した。この「色モード境界輝度Ａ１，Ａ２，Ａ３」の測定は、各照明器具Ｌ１，Ｌ２，Ｌ３を調光して、部屋の床面中央部に設置した照度計４によって測定される「床面中央照度」を変えた複数の条件下で３回づつ行った。   First, the test patch luminance presentation device 1 is installed so that the test patch T is located 2500 mm from the rear wall Ra1, and the “color mode boundary luminances A1, A2, A3 when the lighting fixtures L1, L2, L3 are lit alone are installed. Was measured. The measurement of the “color mode boundary luminances A1, A2, A3” is performed by dimming each of the lighting fixtures L1, L2, L3, and measured by the “illuminance meter 4” installed at the center of the floor of the room. The test was performed three times under a plurality of conditions with different “illuminance”.

また、上記複数の条件下において、視点位置Ｐに対面する正面壁Ｒａ２の「幾何平均輝度Ｂ」の値を、各照明器具Ｌ１，Ｌ２，Ｌ３の配光データから、ラジオシティ法を用いた計算シミュレーションによって算出した。ここで、照明器具Ｌ１，Ｌ２，Ｌ３の各「幾何平均輝度Ｂ」の値を、「幾何平均輝度Ｂ１，Ｂ２，Ｂ３」とする。なお、「幾何平均輝度Ｂ」の単位は［ｃｄ／ｍ２］である。 Further, under the above-mentioned plurality of conditions, the value of the “geometric mean luminance B” of the front wall Ra2 facing the viewpoint position P is calculated from the light distribution data of each of the lighting fixtures L1, L2, and L3 using the radiosity method. Calculated by simulation. Here, the value of each “geometric mean brightness B” of the lighting fixtures L1, L2, and L3 is set to “geometric mean brightness B1, B2, and B3”. The unit of “geometric mean luminance B” is [cd / m 2 ].

図４（ａ）（ｂ）（ｃ）は、上記「色モード境界輝度Ａ１，Ａ２，Ａ３」の測定結果、および上記正面壁Ｒａ２の「幾何平均輝度Ｂ１，Ｂ２，Ｂ３」のシミュレーション結果を示す表であり、図４（ａ）は照明器具Ｌ１単体で点灯した場合の結果、図４（ｂ）は照明器具Ｌ２単体で点灯した場合の結果、図４（ｃ）は照明器具Ｌ３単体で点灯した場合の結果を各々示す。   4A, 4B, and 4C show the measurement results of the “color mode boundary luminances A1, A2, and A3” and the simulation results of “geometric average luminances B1, B2, and B3” of the front wall Ra2. FIG. 4 (a) shows the result when the lighting fixture L1 is lit, FIG. 4 (b) shows the result when the lighting fixture L2 is lit, and FIG. 4 (c) shows that the lighting fixture L3 is lit. The results are shown respectively.

図５は、正面壁Ｒａ２の「幾何平均輝度Ｂ」を横軸に、「色モード境界輝度Ａ」を縦軸にとって、図４（ａ）（ｂ）（ｃ）に示す「床面中央照度」を変えた各条件での「色モード境界輝度Ａ１，Ａ２，Ａ３」の測定結果の平均値と「幾何平均輝度Ｂ１，Ｂ２，Ｂ３」のシミュレーション結果との関係をグラフに示したものである。   FIG. 5 shows the “floor center illuminance” shown in FIGS. 4A, 4B, and 4C with “geometric mean luminance B” of the front wall Ra2 on the horizontal axis and “color mode boundary luminance A” on the vertical axis. The graph shows the relationship between the average value of the measurement results of “color mode boundary luminance A1, A2, A3” and the simulation result of “geometric average luminance B1, B2, B3” under various conditions.

図５中の直線５０は、全てのプロット点に対して線形回帰で求めた直線であり、線形回帰分析の結果、その決定係数は０．８５と高い値を示している。すなわち、「色モード境界輝度Ａ」と正面壁Ｒａ２の「幾何平均輝度Ｂ」との間には高い相関関係があるといえ、「色モード境界輝度Ａ」と正面壁Ｒａ２の「幾何平均輝度Ｂ」との関係は、下記［数２］で表される。したがって、「色モード境界輝度Ａ」は、正面壁Ｒａ２の「幾何平均輝度Ｂ」から推定することができる。   A straight line 50 in FIG. 5 is a straight line obtained by linear regression with respect to all plot points. As a result of the linear regression analysis, the coefficient of determination shows a high value of 0.85. That is, it can be said that there is a high correlation between the “color mode boundary luminance A” and the “geometric average luminance B” of the front wall Ra2, and the “color mode boundary luminance A” and the “geometric average luminance B of the front wall Ra2”. ] Is expressed by the following [Equation 2]. Therefore, the “color mode boundary luminance A” can be estimated from the “geometric mean luminance B” of the front wall Ra2.

Figure 0004821598
Figure 0004821598

そして、「明るさ感覚指標Ｆ´」を「色モード境界輝度Ａ」の１／２として定義した場合、「明るさ感覚指標Ｆ´」は下記［数３］で表される。   When “brightness sensation index F ′” is defined as ½ of “color mode boundary luminance A”, “brightness sensation index F ′” is expressed by the following [Equation 3].

Figure 0004821598
Figure 0004821598

このように、「色モード境界輝度Ａ」と正面壁Ｒａ２の「幾何平均輝度Ｂ」との相関関係（上記［数２］参照）と、「明るさ感覚指標Ｆ´」と「色モード境界輝度Ａ」との相関関係（上記［数１］参照）とに基づいて、「明るさ感覚指標Ｆ´」を、正面壁Ｒａ２の「幾何平均輝度Ｂ」の関数として規定することができる（上記［数３］参照）。   As described above, the correlation between the “color mode boundary luminance A” and the “geometric mean luminance B” of the front wall Ra2 (see the above [Formula 2]), the “brightness sense index F ′”, and the “color mode boundary luminance”. Based on the correlation with “A” (see [Expression 1] above), the “brightness sensation index F ′” can be defined as a function of the “geometric mean brightness B” of the front wall Ra2 (see [[ (See Equation 3]).

具体例を以下説明する。図６に示す部屋サイズ：３６００ｍｍ×３６００ｍｍ、天井高さ：２５００ｍｍの居住居室Ｒａを標準条件の部屋として設定し、照明器具Ｌ１（バーチカルコーナーライト）を観測者の視点位置Ｐに対面する正面壁Ｒａ２の右コーナー近傍に配置する。   A specific example will be described below. The room size shown in FIG. 6: 3600 mm × 3600 mm and the ceiling height: 2500 mm is set as a standard room, the front wall Ra2 facing the observer's viewpoint position P with the lighting fixture L1 (vertical corner light). Place near the right corner of.

そして、この照明器具Ｌ１を対象として、照明器具個別の「明るさ感覚指標Ｆ´」を設定する場合、まず、照明器具Ｌ１を単体で点灯させたときの正面壁Ｒａ２の「幾何平均輝度Ｂ」を、ラジオシティ法を用いた計算シミュレーションによって算出する。   Then, when setting the “brightness sensation index F ′” for each lighting fixture for this lighting fixture L1, first, “geometric mean luminance B” of the front wall Ra2 when the lighting fixture L1 is lit alone. Is calculated by a simulation using the radiosity method.

計算シミュレーションを行う場合、まず、対象とする部屋の条件（大きさ、内装反射率、照明器具の配置等）を設定し、照明器具の条件（光束、配光データ等）に基づいて、各内装面に入射する直射照度を算出する。次に、各内装面を光源とした場合の相互反射成分をラジオシティ法を用いて計算し、最終的に各内装面に入射する光束を決定した後、視点位置、注視点および視野の範囲を設定することで、その視野の範囲における各内装面の輝度分布を得ることができる。   When performing a simulation, first set the conditions of the target room (size, interior reflectance, arrangement of lighting fixtures, etc.), and each interior based on the lighting fixture conditions (light flux, light distribution data, etc.) The direct illuminance incident on the surface is calculated. Next, the mutual reflection component when each interior surface is used as a light source is calculated using the radiosity method, and finally the light flux incident on each interior surface is determined, and then the viewpoint position, gazing point and field of view range are determined. By setting, it is possible to obtain the luminance distribution of each interior surface in the field of view.

図６に示す居住居室Ｒａであれば、Ｘ軸，Ｙ軸，Ｚ軸を有する３次元空間内で、居住居室Ｒａの大きさをＸ方向寸法３６００ｍｍ、Ｙ方向寸法３６００ｍｍ、Ｚ方向寸法２５００ｍｍに設定し、各内装面の内装反射率を設定する。そして、観測者の視点位置Ｐに対面する正面壁Ｒａ２の右コーナー近傍に、所定の配光データ等を有する照明器具Ｌ１（バーチカルコーナーライト）を配置する。さらに、視点位置Ｐの座標（Ｘ，Ｙ，Ｚ）＝（１８００ｍｍ、０ｍｍ、１２５０ｍｍ）、注視点Ｏの位置座標（Ｘ，Ｙ，Ｚ）＝（１８００ｍｍ、３６００ｍｍ、１２５０ｍｍ）とし、視野の範囲を正面壁Ｒａ２とすると、図６に示す正面壁Ｒａ２の「幾何平均輝度Ｂ」は１２．１［ｃｄ／ｍ２］というシミュレーション結果を得た。このように、正面壁Ｒａ２の「幾何平均輝度Ｂ」は、各照明器具の配光データ等に基づいて、ラジオシティ法を用いた計算シミュレーションによって客観的に算出可能である。 In the case of the residential room Ra shown in FIG. 6, the size of the residential room Ra is set to an X-direction dimension of 3600 mm, a Y-direction dimension of 3600 mm, and a Z-direction dimension of 2500 mm in a three-dimensional space having an X axis, a Y axis, and a Z axis. Then, set the interior reflectance of each interior surface. Then, a lighting fixture L1 (vertical corner light) having predetermined light distribution data or the like is arranged in the vicinity of the right corner of the front wall Ra2 facing the observer's viewpoint position P. Further, the coordinates of the viewpoint position P (X, Y, Z) = (1800 mm, 0 mm, 1250 mm), the position coordinates of the gazing point O (X, Y, Z) = (1800 mm, 3600 mm, 1250 mm), and the range of the visual field. Assuming that the front wall Ra2 is used, a simulation result of 12.1 [cd / m 2 ] was obtained for the “geometric mean brightness B” of the front wall Ra2 shown in FIG. As described above, the “geometric mean luminance B” of the front wall Ra2 can be objectively calculated by a calculation simulation using the radiosity method based on the light distribution data of each luminaire.

そして、照明器具Ｌ１の「明るさ感覚指標Ｆ´」は、上記［数３］に基づいて、Ｆ´＝０．４６Ｂ＝５．５７［ｆｅｕ］に設定され、「明るさ感覚指標Ｆ´」と「色モード境界輝度Ａ」との相関関係を維持しながら、客観的に算出した正面壁Ｒａ２の「幾何平均輝度Ｂ」に基づいて個人の主観による誤差の少ない照明空間の「明るさ感覚指標Ｆ´」を容易に得ることができる。   Then, the “brightness sensation index F ′” of the lighting apparatus L1 is set to F ′ = 0.46B = 5.57 [feu] based on the above [Equation 3], and the “brightness sensation index F ′” And “color mode boundary luminance A” while maintaining the correlation between “color mode boundary luminance A” and “brightness sensation index” of an illumination space with less error due to individual subjectivity based on “geometric average luminance B” of the front wall Ra2 that is objectively calculated F ′ ”can be easily obtained.

また、照明器具毎の「幾何平均輝度Ｂ」は上記計算シミュレーションによって算出するので、照明器具毎に「色モード境界輝度Ａ」の測定を行う必要はなく、工数の短縮が可能になる。   In addition, since the “geometric mean luminance B” for each lighting fixture is calculated by the above-described calculation simulation, it is not necessary to measure “color mode boundary luminance A” for each lighting fixture, and the number of man-hours can be reduced.

そして、一室複数灯での間接照明や壁面照明を主体とする部屋においても、部屋の条件を考慮したうえで、カタログ等に記載された照明器具個々の「明るさ感覚指標Ｆ´」の値に基づく足し算を行うことで、専門の知識を持たない一般ユーザでも容易に、所要の明るさ感の照明環境を実現する照明器具の組み合わせを決定することができるのである。   Even in a room mainly composed of indirect lighting or wall lighting with a plurality of lamps in a room, the value of the “brightness sensation index F ′” of each lighting fixture described in a catalog or the like in consideration of room conditions By performing addition based on the above, even a general user who does not have specialized knowledge can easily determine a combination of lighting fixtures that realizes a lighting environment with a required brightness.

しかしながら、上記のような「明るさ感覚指標Ｆ´」の規定方法は、昼光の入射する窓面等の高輝度部が存在する照明空間は想定していない。一般に、窓面等の高輝度部が室内に存在する場合、その高輝度部に目が順応するために、高輝度部がない場合に比べて照明空間の印象は暗くなる。すなわち、同一の明るさ感覚指標に対して感じる照明空間の明るさ感が、高輝度部がない場合に比べて減少するのである。   However, the method for defining the “brightness sensation index F ′” as described above does not assume an illumination space in which a high luminance part such as a window surface on which daylight is incident exists. In general, when a high-luminance part such as a window surface exists in the room, the eyes adapt to the high-luminance part, so that the impression of the illumination space becomes darker than when there is no high-luminance part. That is, the feeling of brightness in the illumination space that is felt with respect to the same brightness sensation index is reduced as compared with the case where there is no high luminance part.

そこで、本発明では、室内の高輝度部による影響を排除するために「明るさ感覚指標Ｆ´」に補正を施す。なお、以降の説明では、上述のように求めた補正前の明るさ感覚指標を「補正前明るさ感覚指標Ｆ´」、後述する補正を施した補正後の明るさ感覚指標を「補正後明るさ感覚指標Ｆ」と称する。   Therefore, in the present invention, the “brightness sensation index F ′” is corrected in order to eliminate the influence of the indoor high luminance part. In the following description, the brightness sensation index before correction determined as described above is “brightness sensation index F ′ before correction”, and the brightness sensation index after correction after correction described later is “brightness after correction”. This is referred to as “feeling index F”.

まず、昼光の入射する窓面を考慮した室内の明るさ感に関する既往研究として、参考文献３（昼光および窓から見える景色を考慮した室内の明るさ感に関する研究、第４回ヤングウェーブフォーラム講演論文集、Ｐ１７〜Ｐ２２、２００６年３月、大上他）がある。この研究では、室内の明るさに関する評価に屋外の景色やその明るさが影響することが示され、昼光を有効に活用するための設計指標として、顔前鉛直面照度、室内平均輝度、景色の平均輝度を取り上げ、その組み合わせと室内の明るさに関する評価との関係が検討されている。   First, as a past study on the brightness of the room considering the window where daylight enters, Reference 3 (Study on the brightness of the room considering the daylight and the view from the window, 4th Young Wave Forum) Lecture Collection, P17-P22, March 2006, Ogami et al. In this study, it was shown that the outdoor scenery and its brightness affect the evaluation of the indoor brightness. As design indicators for effective use of daylight, the frontal vertical surface illuminance, indoor average brightness, scenery Taking into account the average luminance, the relationship between the combination and the evaluation of the brightness of the room has been studied.

そして、参考文献３には、窓外の景色が一様であり、窓を介して外光が入射する場合に、複数の全天空照度に対する室内平均輝度と室内の明るさ感評価値との関係が実験によって導き出されており、本発明者らは、この実験における室内の輝度データから、上記［数３］にしたがって各実験条件における「補正前明るさ感覚指標Ｆ´」を算出し、この算出結果を用いて図７の関係を導き出した。図７は、複数の全天空照度［０（ｌｘ）、１０００（ｌｘ）、１２０００（ｌｘ）、３００００（ｌｘ）］に対する「補正前明るさ感覚指標Ｆ´」と室内の「明るさ感評価値Ｑ」との関係が示されており、
全天空照度 ０（ｌｘ）時： Ｑ１＝１．０６８６Ｌｎ（Ｆ´）＋１．９９０４
全天空照度 １０００（ｌｘ）時： Ｑ２＝２．９３８９Ｌｎ（Ｆ´）−５．１１３３
全天空照度１２０００（ｌｘ）時： Ｑ３＝８．４６９５Ｌｎ（Ｆ´）−３１．８０４
全天空照度３００００（ｌｘ）時： Ｑ４＝１０．６８３Ｌｎ（Ｆ´）−４６．７７６
となり、補正前明るさ感覚指標Ｆ´に対する明るさ感評価値Ｑの推移は、全天空照度の値によって違いがある。 In Reference 3, when the scenery outside the window is uniform and external light is incident through the window, the relationship between the indoor average brightness and the indoor brightness evaluation value for a plurality of whole sky illuminances. Has been derived by experiment, and the present inventors calculate the “pre-correction brightness sensation index F ′” in each experimental condition from the indoor luminance data in this experiment according to the above [Equation 3]. The relationship of FIG. 7 was derived using the results. FIG. 7 shows the “brightness sensation index F ′ before correction” and the “brightness sensation evaluation value” for a plurality of whole sky illuminances [0 (lx), 1000 (lx), 12000 (lx), 30000 (lx)]. Q "is shown,
Total sky illuminance 0 (lx): Q1 = 1.0686Ln (F ′) + 1.904
Total sky illumination 1000 (lx): Q2 = 2.9389Ln (F ′) − 5.1133
When total sky illuminance is 12000 (lx): Q3 = 8.4695 Ln (F ′) − 31.804
Total sky illumination 30000 (lx): Q4 = 10.683Ln (F ′) − 46.776
Thus, the transition of the brightness feeling evaluation value Q with respect to the brightness sensation index F ′ before correction differs depending on the value of the total sky illuminance.

ここで、明るさ感評価値Ｑが４（やや明るい）となる補正前明るさ感覚指標Ｆ´の値を、全天空照度［０（ｌｘ）、１０００（ｌｘ）、１２０００（ｌｘ）、３００００（ｌｘ）］に対して求めることによって、図８に示す同一の明るさ感評価値Ｑが得られる全天空照度Ｉａと補正前明るさ感覚指標Ｆ´との関係［Ｆ´＝０．００３５Ｉａ＋１５．８６５］を導出し、この結果から、同一の明るさ感評価値Ｑが得られる全天空照度Ｉａと補正前明るさ感覚指標Ｆ´との関係はリニアであると考えられる。したがって、全天空照度Ｉａ＝０（ｌｘ）つまり外光が室内に入射しない条件で得られる明るさ感覚指標を基準とすると、外光が入射して全天空照度Ｉａが０（ｌｘ）より大きくなった場合の明るさ感覚指標は、外光が入射した条件で得られた補正前明るさ感覚指標Ｆ´に、補正係数（比例係数）αを乗ずることによって、外光が室内に入射しない条件での明るさ感覚指標に補正され、「補正後明るさ感覚指標Ｆ」として表すことができる。すなわち、「補正後明るさ感覚指標Ｆ」は、下記［数４］で表される。   Here, the value of the pre-correction brightness sensation index F ′ at which the brightness sensation evaluation value Q is 4 (slightly bright) is represented by the whole sky illuminance [0 (lx), 1000 (lx), 12000 (lx), 30000 ( lx)] to obtain the same brightness sensation evaluation value Q shown in FIG. 8, and the relationship between the total sky illuminance Ia and the pre-correction brightness sensation index F ′ [F ′ = 0.0035 Ia + 15.865]. From this result, it is considered that the relationship between the total sky illuminance Ia at which the same brightness sensation evaluation value Q is obtained and the pre-correction brightness sensation index F ′ is linear. Therefore, when the sky illuminance Ia = 0 (lx), that is, the brightness sensation index obtained under the condition that the outside light does not enter the room, the outside sky is incident and the sky illuminance Ia becomes larger than 0 (lx). The brightness sensation index is calculated by multiplying the pre-correction brightness sensation index F ′ obtained under the condition where external light is incident by a correction coefficient (proportional coefficient) α so that the external light is not incident on the room. Can be expressed as “corrected brightness sensation index F”. That is, the “corrected brightness sensation index F” is expressed by the following [Equation 4].

Figure 0004821598
Figure 0004821598

このように求められる「補正後明るさ感覚指標Ｆ」は、高輝度部の存在に目が順応することの影響を補正されており、この「補正後明るさ感覚指標Ｆ」を用いて屋内照明を設計すれば、高輝度部が存在する照明空間において目の順応を考慮して適切な明るさ感を確保した屋内照明を設計することができる。   The “corrected brightness sensation index F” obtained in this way has been corrected for the effect of the eyes adapting to the presence of the high-luminance part. Thus, it is possible to design indoor lighting that secures an appropriate brightness feeling in consideration of the adaptation of the eyes in an illumination space where a high-luminance portion exists.

上述した本発明の屋内照明設計方法は、図１のフローチャートに表され、まず上記［数１］または［数３］により、色モード境界輝度Ａとの相関関係に基づいて、照明空間の明るさ感を表す補正前明るさ感覚指標Ｆ´を規定し（ステップＳ１）、高輝度部が存在する照明空間で当該高輝度部に観測者の目が順応することによって同一の補正前明るさ感覚指標に対して観測者が感じる照明空間の明るさ感の減少分を補正する補正係数αを、補正前明るさ感覚指標Ｆ´に乗じることで補正後明るさ感覚指標Ｆを規定し（ステップＳ２）、この補正後明るさ感覚指標Ｆを用いて屋内照明を設計する（ステップＳ３）という手順で行われる。   The indoor lighting design method of the present invention described above is represented in the flowchart of FIG. 1, and first, the brightness of the illumination space based on the correlation with the color mode boundary luminance A according to the above [Equation 1] or [Equation 3]. Pre-correction brightness sensation index F ′ representing a feeling is defined (step S1), and the same pre-correction brightness sensation index is obtained by the observer's eyes adapting to the high luminance part in the illumination space where the high luminance part exists. The corrected brightness sensation index F is defined by multiplying the uncorrected brightness sensation index F ′ by a correction coefficient α that corrects the decrease in the brightness sensation in the illumination space felt by the observer (step S2). The indoor lighting is designed using the corrected brightness sensation index F (step S3).

また、補正係数αは、図９に示すように、全天空照度Ｉａが増大するにつれて減少する関係にあり、全天空照度Ｉａに応じて変化している。したがって、高輝度部が屋内と屋外との間に設けられた窓面である場合、観測者の視野内における窓の割合を特定し、さらに屋外の全天空照度を測定することで、観測者の視野内における窓の割合と全天空照度とに基づいて、補正係数αを設定することができる。   Further, as shown in FIG. 9, the correction coefficient α has a relationship that decreases as the total sky illuminance Ia increases, and changes according to the total sky illuminance Ia. Therefore, if the high-luminance part is a window surface provided between indoor and outdoor, the ratio of the window in the observer's field of view is specified, and further, the sky's overall sky illuminance is measured. The correction coefficient α can be set based on the ratio of windows in the field of view and the total sky illuminance.

なお、上記「所要の明るさ感覚指標Ｆｒ´」についても、同様に補正係数αを乗じて補正することで、「補正後の所要の明るさ感覚指標Ｆｒ」を得ることができる。   Note that the “required brightness sensation index Fr ′” can be obtained by correcting the “required brightness sensation index Fr ′” by multiplying the correction coefficient α in the same manner.

（実施形態２）
本実施形態では、実施形態１で説明した「補正後明るさ感覚指標Ｆ」を用いて照明器具の調光制御を行う照明制御システムについて説明する。 (Embodiment 2)
In the present embodiment, a lighting control system that performs dimming control of a lighting fixture using the “corrected brightness sensation index F” described in the first embodiment will be described.

ます、図１０は、照明制御システムの構成を示し、窓Ｗから外光が入射する部屋Ｒｂの照明空間を照明する照明器具Ｌａと、照明器具Ｌａへ供給する点灯電力を可変として調光制御する制御部１０と、「補正前明るさ感覚指標Ｆ´」を計測する明るさ感覚指標計測部１１と、「補正係数α」を導出する補正係数導出部１２と、「補正後明るさ感覚指標Ｆ」を導出する明るさ感覚指標補正部１３とで構成される。   First, FIG. 10 shows the configuration of the lighting control system. The lighting fixture La that illuminates the lighting space of the room Rb in which external light enters from the window W and the lighting power supplied to the lighting fixture La are dimmed and controlled. The control unit 10, the brightness sensation index measurement unit 11 that measures the “pre-correction brightness sensation index F ′”, the correction coefficient derivation unit 12 that derives the “correction coefficient α”, and the “corrected brightness sensation index F” And a brightness sensation index correction unit 13 for deriving “

明るさ感覚指標計測部１１は、図１１に示すように、ＣＣＤカメラ１１ａと、輝度分布測定部１１ｂと、幾何平均輝度算出部１１ｃと、明るさ感覚指標算出部１１ｄとで構成される。まず、ＣＣＤカメラ１１ａの撮像範囲は観測者の視野と略同範囲に設定されており、窓Ｗを設けている壁面Ｒｂ１の画像をＣＣＤカメラ１１ａで撮像し、輝度分布測定部１１ｂは、撮像データに基づいて撮像空間の輝度分布を測定し、幾何平均輝度算出部１１ｃは、この輝度分布に基づいて「幾何平均輝度Ｂ」を算出し、明るさ感覚指標算出部１１ｄは、「幾何平均輝度Ｂ」から上記［数３］にしたがって「補正前明るさ感覚指標Ｆ´」を算出する。   As shown in FIG. 11, the brightness sensation index measurement unit 11 includes a CCD camera 11a, a luminance distribution measurement unit 11b, a geometric average luminance calculation unit 11c, and a brightness sensation index calculation unit 11d. First, the imaging range of the CCD camera 11a is set to be approximately the same as the visual field of the observer, and the image of the wall surface Rb1 provided with the window W is captured by the CCD camera 11a. The luminance distribution measuring unit 11b The geometric average luminance calculation unit 11c calculates “geometric average luminance B” based on the luminance distribution, and the brightness sensation index calculation unit 11d calculates “geometric average luminance B”. ”Is calculated according to the above [Equation 3].

補正係数導出部１２は、図１１に示すように、屋外の全天空照度を測定する全天空照度測定部１２ａと、補正係数演算部１２ｂとで構成されている。そして、補正係数演算部１２ｂは、観測者の視野と略同範囲に設定されたＣＣＤカメラ１１ａの撮像範囲における窓Ｗの割合が予め設定されており、該窓Ｗの割合と、全天空照度測定部１２ａで測定した全天空照度とに基づいて、「補正係数α」を算出する。   As shown in FIG. 11, the correction coefficient deriving unit 12 includes a global sky illuminance measurement unit 12 a that measures outdoor total sky illuminance, and a correction coefficient calculation unit 12 b. Then, the correction coefficient calculation unit 12b sets in advance the ratio of the window W in the imaging range of the CCD camera 11a that is set to approximately the same range as the observer's field of view. Based on the whole sky illuminance measured by the unit 12a, the “correction coefficient α” is calculated.

そして、明るさ感覚指標補正部１３は、上記［数４］にしたがって、「補正係数α」を「補正前明るさ感覚指標Ｆ´」に乗じることで、高輝度部の存在に目が順応することの影響が補正された「補正後明るさ感覚指標Ｆ」を算出し、制御部１０は、この「補正後明るさ感覚指標Ｆ」が目標値となるように照明装置Ｌａを調光制御することで、窓Ｗを介して入射する外光の影響を考慮した適切な明るさ感に調光することができる。すなわち、高輝度部が存在する照明空間において目の順応を考慮して適切な明るさ感を確保した調光制御を行うことができるのである。   Then, the brightness sensation index correction unit 13 multiplies the “correction coefficient α” by the “pre-correction brightness sensation index F ′” according to the above [Equation 4], so that the eyes adapt to the presence of the high luminance part. The “corrected brightness sensation index F” in which the influence of this is corrected is calculated, and the control unit 10 performs dimming control on the lighting device La so that the “corrected brightness sensation index F” becomes a target value. Thus, it is possible to adjust the brightness to an appropriate brightness in consideration of the influence of external light incident through the window W. That is, it is possible to perform dimming control that secures an appropriate brightness feeling in consideration of the adaptation of the eyes in the illumination space where the high-luminance portion exists.

また、図１１に破線で示すように、ブラインド、カーテン等の遮光手段１５を開閉させることで窓Ｗの透光面積を可変とする遮光装置１４を設けて、制御部１０は、「補正後明るさ感覚指標Ｆ」が目標値となるように照明装置Ｌａを調光制御するとともに、遮光装置１４の動作も連動して制御すれば、調光範囲が広がる。この場合、観測者の視野における窓Ｗの割合は遮光装置１４の動作によって変動するが、補正係数導出部１２は、遮光装置１４の動作状態を逐次取得して、遮光装置１４の動作状態に応じた窓Ｗの割合を用いて、適切な「補正係数α」を算出している。   Further, as shown by a broken line in FIG. 11, a light-shielding device 14 that makes the light-transmitting area of the window W variable by opening and closing the light-shielding means 15 such as a blind and a curtain is provided. If the lighting device La is dimmed and controlled in conjunction with the operation of the light shielding device 14 so that the sense index F "becomes a target value, the dimming range is expanded. In this case, the ratio of the window W in the observer's field of view varies depending on the operation of the light shielding device 14, but the correction coefficient deriving unit 12 sequentially acquires the operation state of the light shielding device 14 and responds to the operation state of the light shielding device 14. An appropriate “correction coefficient α” is calculated using the ratio of the window W.

実施形態１の屋内照明設計方法のフローチャートを示す図である。It is a figure which shows the flowchart of the indoor lighting design method of Embodiment 1. FIG. 同上のテストパッチ輝度提示装置の構成を示す図である。It is a figure which shows the structure of a test patch brightness | luminance presentation apparatus same as the above. 同上の実験設備を示す図である。It is a figure which shows experimental equipment same as the above. （ａ）（ｂ）（ｃ）同上の照明器具毎の実験結果を示す図である。(A) (b) (c) It is a figure which shows the experimental result for every lighting fixture same as the above. 正面壁の幾何平均輝度と色モード境界輝度との相関を示す図である。It is a figure which shows the correlation with the geometric average brightness | luminance of a front wall, and a color mode boundary brightness | luminance. 同上の居住居室を示す図である。It is a figure which shows a residence room same as the above. 補正前明るさ感覚指標と明るさ感評価値との関係を示す図である。It is a figure which shows the relationship between the brightness feeling parameter | index before correction | amendment, and a brightness feeling evaluation value. 同一の明るさ感評価値が得られる全天空照度と補正前明るさ感覚指標との関係を示す図である。It is a figure which shows the relationship between the whole sky illumination intensity from which the same brightness feeling evaluation value is obtained, and the brightness sensation index before correction | amendment. 全天空照度と補正係数との関係を示す図である。It is a figure which shows the relationship between whole sky illumination intensity and a correction coefficient. 実施形態２の照明制御システムの構成を示す図である。It is a figure which shows the structure of the illumination control system of Embodiment 2. FIG. 同上の一部の詳細構成を示す図である。It is a figure which shows the one part detailed structure same as the above.

符号の説明Explanation of symbols

Ａ 色モード境界輝度
Ｆ´ 補正前明るさ感覚指標
Ｆ 補正後明るさ感覚指標
α 補正係数 A Color mode boundary luminance F 'Brightness sense index before correction F Brightness sense index after correction α Correction coefficient

Claims (4)

屋内の照明空間において照明器具の光源とは別の光源を用いて表面の輝度が変化する色票を部屋内に備えて、観測者から見た色票が部屋内に置かれた物体として認識される輝度のレベルと自ら発光している光源として認識される輝度のレベルとの中間である不自然な色の見え方になるときの色票の輝度である色モード境界輝度との相関関係に基づいて、照明空間の明るさ感を表す補正前明るさ感覚指標を規定し、
高輝度部が存在する照明空間で当該高輝度部に観測者の目が順応することによって同一の補正前明るさ感覚指標に対して観測者が感じる照明空間の明るさ感の減少分を補正する補正係数を、補正前明るさ感覚指標に乗じることで補正後明るさ感覚指標を規定し、
補正後明るさ感覚指標を用いて屋内照明を設計する
ことを特徴とする屋内照明設計方法。 In the indoor lighting space, a color chart that changes the brightness of the surface is provided in the room using a light source that is different from the light source of the luminaire, and the color chart viewed by the observer is recognized as an object placed in the room. Based on the correlation between the color mode boundary luminance, which is the luminance of the color chart when it looks like an unnatural color that is intermediate between the luminance level that is recognized as the light source that emits light Pre-correction brightness sensation index that expresses the brightness of the lighting space,
When the observer's eyes adjust to the high-luminance part in the illumination space where the high-luminance part exists, the decrease in the brightness feeling of the illumination space that the observer feels for the same pre-correction brightness sensation index is corrected. Specify the brightness sensation index after correction by multiplying the correction factor by the brightness sensation index before correction,
An indoor lighting design method, wherein an indoor lighting is designed using a corrected brightness sense index. 前記高輝度部が屋内と屋外との間に設けられた窓面である場合、観測者の視野内における窓面の割合と、屋外の全天空照度とに基づいて、前記補正係数を設定することを特徴とする請求項１記載の屋内照明設計方法。   When the high-intensity part is a window surface provided between indoor and outdoor, the correction coefficient is set based on the ratio of the window surface in the observer's field of view and the outdoor sky illuminance. The indoor lighting design method according to claim 1. 屋内の照明空間を照明する照明器具と、
照明器具を調光制御する制御手段と、
屋内の照明空間において照明器具の光源とは別の光源を用いて表面の輝度が変化する色票を部屋内に備えて、観測者から見た色票が部屋内に置かれた物体として認識される輝度のレベルと自ら発光している光源として認識される輝度のレベルとの中間である不自然な色の見え方になるときの色票の輝度である色モード境界輝度との相関関係に基づいて、照明空間の明るさ感を表す補正前明るさ感覚指標を計測する明るさ感覚指標計測手段と、
高輝度部が存在する照明空間で当該高輝度部に観測者の目が順応することによって同一の補正前明るさ感覚指標に対して観測者が感じる照明空間の明るさ感の減少分を補正する補正係数を導出する補正係数導出手段と、
補正係数を補正前明るさ感覚指標に乗じることで補正後明るさ感覚指標を導出する明るさ感覚指標補正手段と、
を備え、
制御手段は、補正後明るさ感覚指標が目標値となるように照明装置を調光制御する
ことを特徴とする照明制御システム。 A lighting fixture that illuminates an indoor lighting space;
Control means for dimming control of the lighting fixture;
In the indoor lighting space, a color chart that changes the brightness of the surface is provided in the room using a light source that is different from the light source of the luminaire, and the color chart viewed by the observer is recognized as an object placed in the room. Based on the correlation between the color mode boundary luminance, which is the luminance of the color chart when it looks like an unnatural color that is intermediate between the luminance level that is recognized as the light source that emits light A brightness sensation index measuring means for measuring a pre-correction brightness sensation index representing the brightness of the lighting space,
When the observer's eyes adjust to the high-luminance part in the illumination space where the high-luminance part exists, the decrease in the brightness feeling of the illumination space that the observer feels for the same pre-correction brightness sensation index is corrected. Correction coefficient deriving means for deriving a correction coefficient;
Brightness sensation index correction means for deriving the corrected brightness sensation index by multiplying the correction coefficient by the brightness sensation index before correction,
With
The control means performs dimming control of the lighting device so that the corrected brightness sensation index becomes a target value. 前記高輝度部は、屋内と屋外との間に設けられた窓面であって、窓面の面積を可変とする遮光装置を具備し、
前記補正係数導出手段は、観測者の視野内における窓面の割合と、屋外の全天空照度とに基づいて、前記補正係数を導出し、
前記制御手段は、補正後明るさ感覚指標が所定値となるように、照明器具の調光と、窓面の遮光装置の動作とを連動制御することを特徴とする請求項３記載の照明制御システム。 The high-luminance part is a window surface provided between the indoor and the outdoor, and includes a light-shielding device that makes the area of the window surface variable,
The correction coefficient deriving means derives the correction coefficient based on the ratio of the window surface in the observer's field of view and the outdoor sky illuminance,
4. The illumination control according to claim 3, wherein the control means controls the dimming of the lighting fixture and the operation of the light shielding device on the window surface in an interlocking manner so that the corrected brightness sensation index becomes a predetermined value. system.
JP2006348626A 2006-12-25 2006-12-25 Indoor lighting design method and lighting control system Active JP4821598B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2006348626A JP4821598B2 (en) 2006-12-25 2006-12-25 Indoor lighting design method and lighting control system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2006348626A JP4821598B2 (en) 2006-12-25 2006-12-25 Indoor lighting design method and lighting control system

Publications (2)

Publication Number Publication Date
JP2008159487A JP2008159487A (en) 2008-07-10
JP4821598B2 true JP4821598B2 (en) 2011-11-24

Family

ID=39660153

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2006348626A Active JP4821598B2 (en) 2006-12-25 2006-12-25 Indoor lighting design method and lighting control system

Country Status (1)

Country Link
JP (1) JP4821598B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010009891A (en) * 2008-06-25 2010-01-14 Panasonic Electric Works Co Ltd Interior lighting design method, and lighting control system

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005071706A (en) * 2003-08-21 2005-03-17 Matsushita Electric Works Ltd Lighting control method and system
JP4333448B2 (en) * 2004-03-31 2009-09-16 パナソニック電工株式会社 Evaluation method and evaluation system for brightness in space
JP4473760B2 (en) * 2005-03-25 2010-06-02 パナソニック電工株式会社 Indoor lighting design method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010009891A (en) * 2008-06-25 2010-01-14 Panasonic Electric Works Co Ltd Interior lighting design method, and lighting control system

Also Published As

Publication number Publication date
JP2008159487A (en) 2008-07-10

Similar Documents

Publication Publication Date Title
JP4626511B2 (en) Method for defining brightness sensation index in lighting space, and indoor lighting design method using the same
DK3039336T3 (en) Lighting systems
JP2010009874A (en) Lighting control system
JP6863475B2 (en) Lighting control system and lighting control method
JP6108150B2 (en) Lighting control system
JP2008202283A (en) False window
Borisuit et al. Visual discomfort and glare rating assessment of integrated daylighting and electric lighting systems using HDR imaging techniques
Bodart et al. Assessing daylight luminance values and daylight glare probability in scale models
Słomiński et al. Luminance distribution projection method for reducing glare and solving object-floodlighting certification problems
Kruisselbrink et al. Feasibility of ceiling-based luminance distribution measurements
JP4473760B2 (en) Indoor lighting design method
Ibañez et al. Natural and artificial lighting analysis in a classroom of technical drawing: measurements and HDR images use
JP5133149B2 (en) Indoor lighting design method and lighting control system
KR20160131299A (en) System and method for controlling lighting based on lighting model
JP2011044384A (en) Lighting system and lighting method
JP5584795B2 (en) Lighting device
JP4821598B2 (en) Indoor lighting design method and lighting control system
JP4654842B2 (en) Illumination space atmosphere design method and illumination space atmosphere control system
JP4900047B2 (en) Lighting environment measuring device
JP4872806B2 (en) Method for defining the brightness sensation index of the lighting space
Borisuit et al. Assessment of circadian weighted radiance distribution using a camera-like light sensor
JP5877326B2 (en) Lighting system
JP2005071706A (en) Lighting control method and system
JP6154100B2 (en) Light environment control method and light environment control system
Sawicki et al. Glare assessment for research and development of measurement methods

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20090819

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20100903

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20110803

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20110809

A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20110822

R151 Written notification of patent or utility model registration

Ref document number: 4821598

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20140916

Year of fee payment: 3