JP2016095998A - Luminaire - Google Patents
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本発明は、主として街路灯に用いられる照明装置に関する。 The present invention relates to a lighting device mainly used for a street lamp.
従来から、一般的な照明装置では、明るい環境（明所視）における明所視輝度を高める様な設計がなされている。これは、明所視輝度を高めることで、人の網膜に存在し明所視において明るさを知覚する錐体を働かせ、人が明るさをより知覚することができるようにするためである。 Conventionally, general lighting devices have been designed to increase photopic brightness in a bright environment (photopic vision). This is because by increasing the photopic brightness, a cone that exists in the retina of a person and perceives brightness in photopic vision is activated so that the person can perceive brightness more.
しかしながら、夜間の街路空間や道路空間等といった、いわゆる薄明視においては、分光視感効率のピーク値が５５５ｎｍである錐体に加えて、分光視感効率のピーク値が５０７ｎｍである桿体が働く。そのため、明所視輝度だけを高めても、桿体が十分に働かなければ、人が明るさを十分に知覚できないことがある。このような分光視感効率の変化は、プルキンエ現象として知られている。 However, in so-called mesopic vision such as nighttime street space and road space, in addition to a cone having a spectral luminous efficiency peak value of 555 nm, a rod having a spectral luminous efficiency peak value of 507 nm works. . For this reason, even if only the photopic brightness is increased, a person may not be able to perceive the brightness sufficiently if the housing does not work sufficiently. Such a change in spectral luminous efficiency is known as the Purkinje phenomenon.
そこで、錐体及び桿体の両方を薄明視において働かせるための複数の光源を備えた照明装置が知られている（例えば、特許文献１参照）。この照明装置では、光源の内の少なくとも１つが、薄明視において働く桿体の分光視感効率のピーク波長である５０７ｎｍを含む波長領域となるように、ピーク値が波長４５０〜５５０ｎｍの間となる構成とされている。 Then, the illuminating device provided with the several light source for making both a cone and a rod work in a clear vision is known (for example, refer patent document 1). In this illumination device, at least one of the light sources has a peak value in the wavelength range of 450 to 550 nm so as to be in a wavelength region including 507 nm, which is the peak wavelength of spectral luminous efficiency of the housing that works in thin vision. It is configured.
また、相関色温度が相対的に低い光を照射する第１光照射部と、暗所視光束及び明所視光束の比率であるＳ／Ｐ比が相対的に高い光を照射する第２光照射部と、を備えた照明装置が知られている（例えば、特許文献２参照）。この照明装置では、第１光照射部が、第２光照射部よりも鉛直方向において上側の領域を照射することで、街路樹等の植栽に対して低色温度光を照射し、景観上好ましい照明を行うことができる。 In addition, a first light irradiating unit that irradiates light having a relatively low correlated color temperature, and a second light that irradiates light having a relatively high S / P ratio that is a ratio of the scotopic light beam and the photopic light beam. An illumination device including an irradiation unit is known (see, for example, Patent Document 2). In this lighting device, the first light irradiating unit irradiates the upper region in the vertical direction with respect to the second light irradiating unit, thereby irradiating the plant such as street trees with low color temperature light, Preferred illumination can be performed.
ところで、上記特許文献１に記載の照明装置では、プルキンエ現象を考慮し、光源の分光分布を可視光のうち相対的に短波長成分を増すことで、薄明視において人が明るさ感を得られるようにしている。しかしながら、短波長成分を増すと、相関色温度が高くなるので、例えば、街路樹が照明されると、緑色の葉等が青みがかって見え、暖かみや落ち着いた雰囲気が得られないことがあった。特に、短波長成分を単純に増加させると、演色性が低下する虞がある。 By the way, in the illuminating device described in the above-mentioned Patent Document 1, the Purkinje phenomenon is taken into consideration, and the spectral distribution of the light source is increased by relatively increasing the short-wavelength component of the visible light, so that a person can obtain a sense of brightness in the low vision. I am doing so. However, increasing the short wavelength component increases the correlated color temperature. For example, when a roadside tree is illuminated, green leaves and the like appear bluish, and a warm or calm atmosphere may not be obtained. In particular, when the short wavelength component is simply increased, the color rendering may be deteriorated.
また、上記特許文献２に記載の照明装置では、景観上好ましい照明を行うためには、街路樹及び路面といった２つの照射領域を適切に照射できるように、照明装置の設置や配光に工夫が必要であった。また、路面付近にある植栽等には、高色温度光が照射されることになり、必ずしも景観上好ましい照明を行うことができないことがあった。 In addition, in the lighting device described in Patent Document 2, in order to perform illumination that is preferable from a landscape, the lighting device is devised in the installation and light distribution so that two irradiation areas such as a roadside tree and a road surface can be appropriately irradiated. It was necessary. Moreover, high color temperature light will be irradiated to the planting etc. in the road surface vicinity, and it was not necessarily able to perform the illumination preferable on a landscape.
本発明は、上記課題を解決するものであり、景観上好ましい暖かみや落ち着いた雰囲気が得られる照明を行うことができ、且つ薄明視における視認性が高い照明装置を提供することを目的とする。 The present invention solves the above-described problems, and an object of the present invention is to provide an illumination device that can perform illumination that provides a warm and calm atmosphere that is preferable for a landscape and that has high visibility in thin vision.
上記課題を解決するために、本発明は、相関色温度が４０００Ｋ以下、色偏差Ｄｕｖが±２０以内、暗所視輝度及び明所視輝度の比率であるＳ／Ｐ比が１．５を超え、平均演色評価数Ｒａが６０以上である白色光を照射する照明用光源を備えたことを特徴とする照明装置である。 In order to solve the above-described problems, the present invention has a correlated color temperature of 4000 K or less, a color deviation Duv within ± 20, and a S / P ratio that is a ratio of scotopic luminance and photopic luminance exceeds 1.5. An illumination device including an illumination light source that emits white light having an average color rendering index Ra of 60 or more.
本発明によれば、相関色温度が４０００Ｋ以下の低色温度の光により、景観上好ましい暖かみや落ち着いた雰囲気が得られる照明を行うことができ、且つＳ／Ｐ比を１．５以上に高めることで、薄明視における視認性を高めることができる。 According to the present invention, it is possible to perform illumination that provides a warm and calm atmosphere that is preferable for landscapes with light having a low color temperature of a correlated color temperature of 4000 K or less, and the S / P ratio is increased to 1.5 or more. Thereby, the visibility in thin vision can be improved.
本発明の第１の実施形態に係る照明装置について、図１乃至図４を参照して説明する。図１に示すように、本実施形態の照明装置１は、光源ユニット２（照明用光源）と、照明光が設定された光色となるように光源ユニット２の出力を制御するための制御ユニット３と、を備える。光源ユニット２には、互いに異なる発光スペクトルを有する複数種の固体発光素子（以下、ＬＥＤ）、図例では、光源ユニット２として３系統の光源（２ａ，２ｂ，２ｃ）が用いられ、これらが灯具１０に組み込まれている。また、照明装置１は、各光源（２ａ〜２ｃ）に所定の電力を供給する電源ユニット４を備える。電源ユニット４は、図示したように、それ自体が独立した構成であってもよいし、制御ユニット３又は灯具１０のいずれかに組み込まれていてもよい。 A lighting device according to a first embodiment of the present invention will be described with reference to FIGS. As shown in FIG. 1, the illuminating device 1 of this embodiment includes a light source unit 2 (light source for illumination) and a control unit for controlling the output of the light source unit 2 so that the illumination light has a set light color. 3. The light source unit 2 includes a plurality of types of solid light emitting elements (hereinafter referred to as LEDs) having different emission spectra, and in the illustrated example, three light sources (2a, 2b, 2c) are used as the light source unit 2, and these are lamps. 10 is incorporated. Moreover, the illuminating device 1 is provided with the power supply unit 4 which supplies predetermined electric power to each light source (2a-2c). As illustrated, the power supply unit 4 may have an independent configuration, or may be incorporated in either the control unit 3 or the lamp 10.
図２に示すように、灯具１０は、例えば、屋外の路面脇に設置された電柱等に固定される街路灯として用いられる。灯具１０は、器具本体を保持すると共に、光源ユニット２を収容する本体部１１と、光源ユニット２の各光源２ａ〜２ｃから出射された光を拡散して出射するカバー１２と、を備える。また、灯具１０は、本体部１１を電柱（不図示）等に固定すると共に商用電源から電源供給を受けるための電源線が挿通された固定器具１３を備える。 As shown in FIG. 2, the lamp 10 is used, for example, as a street light fixed to an electric pole or the like installed on the side of an outdoor road surface. The lamp 10 includes a main body 11 that holds the light source unit 2 and a cover 12 that diffuses and emits light emitted from the light sources 2 a to 2 c of the light source unit 2 while holding the instrument main body. The lamp 10 also includes a fixture 13 that fixes the main body 11 to a utility pole (not shown) or the like and is inserted with a power line for receiving power supply from a commercial power source.
図３に示すように、光源ユニット２は、青色の光を出射する青色光源２ａ、略青緑の波長域の光を出射する緑色光源２ｂ、及び略赤又は橙色の波長域の光を出射する赤色光源２ｃを有する。青色光源２ａは、電源ユニット４と電気的に接続されて青色の光を出射するＬＥＤ２１から成る。緑色光源２ｂは、青色の光を出射するＬＥＤ２１及びＬＥＤ２１から出射された光により励起し所定波長の光を出射する第１蛍光体２２から成る。また、赤色光源２ｃは、青色の光を出射するＬＥＤ２１及びＬＥＤ２１から出射された光により励起し第１蛍光体２２が出射する光の波長とは異なる波長の光を出射する第２蛍光体２３から成る。 As shown in FIG. 3, the light source unit 2 emits a blue light source 2a that emits blue light, a green light source 2b that emits light in a substantially blue-green wavelength region, and light in a substantially red or orange wavelength region. It has a red light source 2c. The blue light source 2a includes an LED 21 that is electrically connected to the power supply unit 4 and emits blue light. The green light source 2b includes an LED 21 that emits blue light and a first phosphor 22 that is excited by the light emitted from the LED 21 and emits light having a predetermined wavelength. The red light source 2c emits blue light and the second phosphor 23 that emits light having a wavelength different from that of the light emitted from the first phosphor 22 when excited by the light emitted from the LED 21. Become.
第１蛍光体２２としては、一般式が、Ｍ１−ａＳｉ２Ｏ２−１／２ｎＸｎＮ２：Ｅｕａで表される蛍光体であって、Ｍはストロンチウム（Ｓｒ）、バリウム（Ｂａ）及びカルシウム（Ｃａ）の少なくとも１つ以上の元素であり、Ｘは塩素（Ｃｌ）及び臭素（Ｂｒ）の少なくとも１つ以上の元素であり、ａは０．００５≦ａ≦０．１５であり、ｎは０．０２≦ｎ≦０．２であることが望ましい。また、第２蛍光体２３としては、一般式（Ｌａ１−ｘ−ｙＥｕｘＳｍｙ）２Ｏ２Ｓ（但し、０．０１≦ｘ≦０．１５，０．０００１≦ｙ≦０．０３）で表わされるユーロピウム・サマリウム付活酸硫化ランタン蛍光体を用いることが望ましい。なお、これらに限らず後述する規定の仕様にて励起発光する任意の蛍光体が用いられ得る。このように構成された光源ユニット２は、電源ユニット４からの電力供給に基づいて各光源２ａ〜２ｃを点灯させて、それらの光に混色により略白色の光を出射する。 As the first phosphor 22, the general formula, M 1-a Si 2 O 2-1 / 2n X n N 2: a phosphor represented by Eu a, M is strontium (Sr), barium ( Ba) and at least one element of calcium (Ca), X is at least one element of chlorine (Cl) and bromine (Br), and a is 0.005 ≦ a ≦ 0.15 And n is preferably 0.02 ≦ n ≦ 0.2. Further, as the second phosphor 23, the general formula (La 1-x-y Eu x Sm y) 2 O 2 S ( where, 0.01 ≦ x ≦ 0.15,0.0001 ≦ y ≦ 0.03 It is desirable to use a europium / samarium activated lanthanum oxysulfide phosphor represented by In addition, not only these but the arbitrary fluorescent substance which carries out excitation light emission by the prescription | regulation specification mentioned later can be used. The light source unit 2 configured as described above turns on each of the light sources 2a to 2c based on power supply from the power supply unit 4, and emits substantially white light by mixing the lights.
光源ユニット２は、相関色温度が４０００Ｋ以下、色偏差Ｄｕｖが±２０以内、暗所視輝度及び明所視輝度の比率であるＳ／Ｐ比が１．５を超え、平均演色評価数Ｒａが６０以上である白色光を照射する。 The light source unit 2 has a correlated color temperature of 4000 K or less, a color deviation Duv within ± 20, an S / P ratio that is a ratio of scotopic luminance and photopic luminance exceeding 1.5, and an average color rendering index Ra Irradiate with 60 or more white light.
Ｓ／Ｐ比とは、薄明視下での視認性の性能評価指数である。Ｓ／Ｐ比は、例えば、暗所視輝度をＬｓ、明所視輝度をＬｐ、光源（照光部）の分光放射強度をＳ（λ）、明所視での分光視感効率をＶ（λ）、暗所視での分光視感効率をＶ’（λ）とした場合に以下の式（１）で算出することができる。 The S / P ratio is a performance evaluation index of visibility under thin vision. The S / P ratio is, for example, Ls for scotopic vision brightness, Lp for photopic vision brightness, S (λ) for spectral radiant intensity of the light source (illuminating unit), and V (λ for spectral luminous efficiency in photopic vision. ), When the spectral luminous efficiency in the dark place vision is V ′ (λ), it can be calculated by the following equation (1).
明所視標準分光視感効率に対し最適化されている一般的な照明用白色光源（以下、参照光源）では、例えば、４０００Ｋ以下でＳ／Ｐ比１．３程度のものがよく用いられている。図４は、参照光源の視認性に対する、順応輝度０．１ｃｄ／ｍ２の場合の、本実施形態の照明装置１による視認性向上効果を示す。ここで、視認性向上効果は、参照光源と本実施形態の照明装置１とを同じ照度で照らしたときに、本実施形態の照明装置１による視認性と同等の視認性を得るのに必要な、参照光源の照度の倍数であり、参考文献（Commission Internationale de l’E´clairage. Recommended System for Visual Performance Based Mesopic Photometry. CIE Publication 191. Vienna: CIE, 2010.）に基づき計算される。同図から、Ｓ／Ｐ比を１．５以上とすることにより、Ｓ／Ｐ比１．３の参照光源に対し、有意に高い視認性を得られることが分かる。 As a general illumination white light source (hereinafter referred to as a reference light source) optimized for photopic standard spectral luminous efficiency, for example, a light source having a S / P ratio of 1.3 or less at 4000K or less is often used. Yes. FIG. 4 shows the effect of improving the visibility of the illumination device 1 of the present embodiment when the adaptation brightness is 0.1 cd / m 2 with respect to the visibility of the reference light source. Here, the visibility improvement effect is necessary to obtain the visibility equivalent to the visibility by the illumination device 1 of the present embodiment when the reference light source and the illumination device 1 of the present embodiment are illuminated with the same illuminance. , Which is a multiple of the illuminance of the reference light source, and is calculated based on a reference (Commission Internationale de l'E'clairage. Recommended System for Visual Performance Based Mesopic Photometry. CIE Publication 191. Vienna: CIE, 2010.). From the figure, it can be seen that by setting the S / P ratio to 1.5 or more, significantly high visibility can be obtained with respect to the reference light source having the S / P ratio of 1.3.
上記のようなＳ／Ｐ比を実現するために、本実施形態の実施例では、青色光源２ａが出射する光のピーク波長が４２５ｎｍを超え４９５ｎｍ未満であり、第１蛍光体２２が出射する光のピーク波長が５００ｎｍを超え５３５ｎｍ未満であり、第２蛍光体２３が出射する光のピーク波長が５９０ｎｍを超え６５０ｎｍ未満であることが望ましい。また、青色光源２ａが出射する光のピーク強度が、第２蛍光体２３が出射する光のピーク強度に対し０．３倍を超え１．３倍未満であり、第１蛍光体２２が出射する光のピーク強度が、第２蛍光体２３が出射する光のピーク強度に対し０．５倍を超え１．１倍未満であることが望ましい。 In order to realize the S / P ratio as described above, in the example of the present embodiment, the peak wavelength of the light emitted from the blue light source 2a is more than 425 nm and less than 495 nm, and the light emitted from the first phosphor 22. It is desirable that the peak wavelength of the second phosphor 23 exceeds 500 nm and less than 535 nm, and the peak wavelength of the light emitted from the second phosphor 23 exceeds 590 nm and less than 650 nm. Further, the peak intensity of the light emitted from the blue light source 2a is more than 0.3 times and less than 1.3 times the peak intensity of the light emitted from the second phosphor 23, and the first phosphor 22 emits. The peak intensity of light is preferably more than 0.5 times and less than 1.1 times the peak intensity of light emitted from the second phosphor 23.
図５は、各光源のピーク波長を、上記範囲に設定した本実施形態の実施例の条件を満たす場合と、上記範囲外に設定して本実施形態の実施例の条件を満たさない場合における相関色温度、色偏差Ｄｕｖ、Ｓ／Ｐ比を夫々示す。 FIG. 5 shows the correlation between the case where the peak wavelength of each light source satisfies the conditions of the example of the present embodiment set in the above range and the case where the peak wavelength of each light source is set outside the above range and does not satisfy the condition of the example of the present embodiment. Color temperature, color deviation Duv, and S / P ratio are shown.
このように、本実施形態の照明装置１（図５に示す光源１〜５）によれば、相関色温度を４０００Ｋ以下にしているので、各種照明基準や認証基準における要求を満たすことができる（Energy StarR Program Requirements for Luminaires Version 1.2参照）。このような、低色温度の光を照射することにより、暖かみや落ち着いた雰囲気を得ることができる。しかも、Ｓ／Ｐ比を１．５を超える値にしたので、図４に示したように、薄明視環境下での視認性を向上させることができる。 Thus, according to the illuminating device 1 (light source 1-5 shown in FIG. 5) of this embodiment, since the correlation color temperature is set to 4000K or less, the requirements in various illumination standards and authentication standards can be satisfied ( (See Energy StarR Program Requirements for Luminaires Version 1.2). By irradiating light of such a low color temperature, a warm or calm atmosphere can be obtained. In addition, since the S / P ratio is set to a value exceeding 1.5, as shown in FIG. 4, the visibility in a dimmed vision environment can be improved.
また、図５で示した光源１，４，５のように、相関色温度は２９００Ｋ以上３６００Ｋ以下、Ｓ／Ｐ比が１．７以上であることがより好ましい。このように、低色温度の光により、景観上好ましい暖かみや落ち着いた雰囲気が得られる照明を行うことができ、且つ高いＳ／Ｐ比を高めることで、薄明視における視認性を高めることができる。 Further, like the light sources 1, 4 and 5 shown in FIG. 5, the correlated color temperature is more preferably 2900K to 3600K and the S / P ratio is 1.7 or more. In this way, illumination with a low color temperature light that can provide a warm and calm atmosphere that is preferable for landscapes can be performed, and by increasing the high S / P ratio, the visibility in thin vision can be increased. .
また、本実施形態によれば、色偏差Ｄｕｖが±２０以内となり、照射される光の光色を黒体軌跡に近づけて自然な白色とすることができる。更に、図５で示した光源３，４，５によれば、道路灯やトンネル内の照明などの屋外照明装置の設計基準（色偏差Ｄｕｖ±１０以内、平均演色評価数Ｒａ６０以上）を満足することができる（国土交通省 ＬＥＤ道路・トンネル照明導入ガイドライン（案）平成２３年）。 In addition, according to the present embodiment, the color deviation Duv is within ± 20, and the light color of the irradiated light can be made close to the black body locus to be natural white. Furthermore, according to the light sources 3, 4, and 5 shown in FIG. 5, the design standard (color deviation Duv ± 10 or less, average color rendering index Ra 60 or more) of outdoor lighting devices such as road lights and lighting in tunnels is satisfied. (Ministry of Land, Infrastructure, Transport and Tourism LED road / tunnel lighting introduction guidelines (draft) 2011).
また、平均演色評価数Ｒａはいずれの実施例でも８０以上と、高くすることができ、被照射物の色の見えを、ＪＩＳ Ｚ９１１０に規定を満足する屋外照明と同等にすることができる。このため、例えば、街路樹が照明されると、緑色の葉等が自然な色に見え、植栽等より自然な色の見えが要求される部位の照明装置にも使用することができる。 Further, the average color rendering index Ra can be increased to 80 or more in any of the embodiments, and the appearance of the color of the irradiated object can be made equivalent to outdoor lighting that satisfies the requirements of JIS Z9110. For this reason, for example, when a roadside tree is illuminated, green leaves and the like look natural, and it can also be used for a lighting device at a site where a natural color is required to be planted or the like.
次に、本発明の第２の実施形態に係る照明装置について、図６及び図７を参照して説明する。本実施形態の照明装置は、上記第１の実施形態と同様に、電柱等に固定される街路灯（図２で示した灯具１０）として用いられ、光源ユニット２の構成において相違する。 Next, an illuminating device according to a second embodiment of the present invention will be described with reference to FIGS. The lighting device of this embodiment is used as a street lamp (lamp 10 shown in FIG. 2) fixed to a utility pole or the like, as in the first embodiment, and differs in the configuration of the light source unit 2.
図６に示すように、本実施形態の照明装置の光源ユニット２は、上記第１の実施形態と同様、青色の光を出射する青色光源２ａ、略青緑の波長域の光を出射する緑色光源２ｂ、及び略赤又は橙色の波長域の光を出射する赤色光源２ｃを有する。青色光源２ａは、電源ユニット４と電気的に接続されて青色の光を出射するＬＥＤ２４から成る。緑色光源２ｂは、青色の光を出射するＬＥＤ２４及びＬＥＤ２４から出射された光により励起し所定波長の光を出射する第３蛍光体２５から成る。また、赤色光源２ｃは、赤色の光を出射するＬＥＤ２６から成る。 As shown in FIG. 6, the light source unit 2 of the illuminating device of the present embodiment has a blue light source 2a that emits blue light and a green light that emits light in a substantially blue-green wavelength region, as in the first embodiment. The light source 2b and the red light source 2c which radiate | emits the light of a substantially red or orange wavelength range are included. The blue light source 2a includes an LED 24 that is electrically connected to the power supply unit 4 and emits blue light. The green light source 2b includes an LED 24 that emits blue light and a third phosphor 25 that is excited by the light emitted from the LED 24 and emits light having a predetermined wavelength. The red light source 2c includes an LED 26 that emits red light.
本実施形態においても、光源ユニット２は、相関色温度が４０００Ｋ以下、色偏差Ｄｕｖが±２０以内、暗所視輝度及び明所視輝度の比率であるＳ／Ｐ比が１．５を超え、平均演色評価数Ｒａが６０以上である白色光を照射する。ただし、上記第１の実施形態で示したＬＥＤ２１及び第１蛍光体２２と、本実施形態のＬＥＤ２４、第３蛍光体２３とは、夫々僅かに発光波長が異なり、赤色光源２ｃを構成するＬＥＤ２６は、自発光により略赤又は橙色の光を出射する。 Also in the present embodiment, the light source unit 2 has a correlated color temperature of 4000 K or less, a color deviation Duv within ± 20, and an S / P ratio that is a ratio of dark place visual brightness and photopic brightness exceeding 1.5, White light having an average color rendering index Ra of 60 or more is irradiated. However, the LED 21 and the first phosphor 22 shown in the first embodiment and the LED 24 and the third phosphor 23 of the present embodiment have slightly different emission wavelengths, and the LED 26 constituting the red light source 2c is , Substantially red or orange light is emitted by self-emission.
上記のようなＳ／Ｐ比を実現するために、本実施形態の実施例では、青色光源２ａが出射する光のピーク波長が４１５ｎｍを超え４９５ｎｍ未満であり、第３蛍光体２５が出射する光のピーク波長が５０５ｎｍを超え５３５ｎｍ未満であり、赤色光源２ｃが出射する光のピーク波長が５９５ｎｍを超え６３５ｎｍ未満であることが望ましい。また、青色光源２ａが出射する光のピーク強度が、赤色光源２ｃが出射する光のピーク強度に対し０．０５倍を超え０．５５倍未満であり、第３蛍光体２５が出射する光のピーク強度が、赤色光源２ｃが出射する光のピーク強度に対し０．２倍を超え０．５倍未満であることが望ましい。 In order to realize the S / P ratio as described above, in the example of this embodiment, the peak wavelength of the light emitted from the blue light source 2a is more than 415 nm and less than 495 nm, and the light emitted by the third phosphor 25 is emitted. It is desirable that the peak wavelength of the red light source 2c is greater than 505 nm and less than 535 nm, and the peak wavelength of the light emitted from the red light source 2c is greater than 595 nm and less than 635 nm. The peak intensity of the light emitted from the blue light source 2a is more than 0.05 times and less than 0.55 times the peak intensity of the light emitted from the red light source 2c. The peak intensity is preferably more than 0.2 times and less than 0.5 times the peak intensity of the light emitted from the red light source 2c.
図７は、各光源のピーク波長を、上記範囲に設定した本実施形態の実施例の条件を満たす場合と、上記範囲外に設定して本実施形態の実施例の条件を満たさない場合における相関色温度、色偏差Ｄｕｖ、Ｓ／Ｐ比を夫々示す。 FIG. 7 shows the correlation in the case where the peak wavelength of each light source satisfies the conditions of the example of the present embodiment set in the above range, and in the case where the peak wavelength of each light source is set outside the above range and does not satisfy the condition of the example of the present embodiment. Color temperature, color deviation Duv, and S / P ratio are shown.
本実施形態においても、各光源を制御して低色温度の光を照射することにより、暖かみや落ち着いた雰囲気を得ることができる。しかも、Ｓ／Ｐ比を１．５を超える値にしたので、図４に示したように、薄明視環境下での視認性を向上させることができる。また、赤色光源２ｃに赤色の光を出射するＬＥＤを用いたので、蛍光体を用いた場合よりも、材料コストを抑制することができ、また、赤色光の波長の半値幅が小さくなり、色偏差Ｄｕｖをより小さく設定することが容易となる。 Also in this embodiment, it is possible to obtain a warm and calm atmosphere by controlling each light source and irradiating light with a low color temperature. In addition, since the S / P ratio is set to a value exceeding 1.5, as shown in FIG. 4, the visibility in a dimmed vision environment can be improved. In addition, since an LED that emits red light is used for the red light source 2c, the material cost can be reduced as compared with the case where a phosphor is used, and the half-value width of the wavelength of the red light is reduced. It becomes easy to set the deviation Duv smaller.
なお、本発明は、上記実施形態に限らず種々の変形が可能である。例えば、上記実施形態では、照明装置１を街路灯として用いた構成を示したが、照明装置１は、一般照明として要求される演色性を具備しているので、通常の屋内照明や、門燈等に用いられてもよい。また、照明装置１は、発光色の異なる３種の光源の点灯出力を制御することにより、照明装置１の設置場所における環境、例えば、外部の明るさ環境等に応じて、Ｓ／Ｐ比や平均演色評価数Ｒａを適宜に変更できるように構成される。 The present invention is not limited to the above embodiment, and various modifications can be made. For example, in the above-described embodiment, the configuration in which the lighting device 1 is used as a street lamp has been described. However, since the lighting device 1 has the color rendering required for general lighting, normal indoor lighting or gate lighting is used. Etc. may be used. Further, the lighting device 1 controls the lighting output of three types of light sources having different emission colors, so that the S / P ratio or the like can be changed according to the environment at the installation location of the lighting device 1, for example, the external brightness environment. The average color rendering evaluation number Ra can be changed as appropriate.
１ 照明装置
２ 光源ユニット（照明用光源）
２ａ 青色光源
２ｃ 赤色光源
２２ 第１蛍光体
２３ 第２蛍光体
２５ 第３蛍光体
DESCRIPTION OF SYMBOLS 1 Illumination device 2 Light source unit (light source for illumination)
2a Blue light source 2c Red light source 22 First phosphor 23 Second phosphor 25 Third phosphor
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10187954B2 (en) | 2016-11-29 | 2019-01-22 | Panasonic Intellectual Property Management Co., Ltd. | Lighting apparatus for display illumination |
| JP2019129114A (en) * | 2018-01-26 | 2019-08-01 | パナソニックＩｐマネジメント株式会社 | Light-emitting body, light housing device, and lighting device |
| WO2021131287A1 (en) * | 2019-12-24 | 2021-07-01 | 日亜化学工業株式会社 | Light emitting device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010534907A (en) * | 2007-07-26 | 2010-11-11 | レムニス・ライティング・パテント・ホールディング・ビー．・ブイ． | Lighting device |
| JP2013101881A (en) * | 2011-11-09 | 2013-05-23 | Stanley Electric Co Ltd | Vehicle headlight |
| JP2013127853A (en) * | 2011-12-16 | 2013-06-27 | Panasonic Corp | Illuminating device |
| JP2013239240A (en) * | 2012-05-11 | 2013-11-28 | Panasonic Corp | Lighting device |
-
2014
- 2014-11-14 JP JP2014231192A patent/JP2016095998A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010534907A (en) * | 2007-07-26 | 2010-11-11 | レムニス・ライティング・パテント・ホールディング・ビー．・ブイ． | Lighting device |
| JP2013101881A (en) * | 2011-11-09 | 2013-05-23 | Stanley Electric Co Ltd | Vehicle headlight |
| JP2013127853A (en) * | 2011-12-16 | 2013-06-27 | Panasonic Corp | Illuminating device |
| JP2013239240A (en) * | 2012-05-11 | 2013-11-28 | Panasonic Corp | Lighting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10187954B2 (en) | 2016-11-29 | 2019-01-22 | Panasonic Intellectual Property Management Co., Ltd. | Lighting apparatus for display illumination |
| JP2019129114A (en) * | 2018-01-26 | 2019-08-01 | パナソニックＩｐマネジメント株式会社 | Light-emitting body, light housing device, and lighting device |
| WO2021131287A1 (en) * | 2019-12-24 | 2021-07-01 | 日亜化学工業株式会社 | Light emitting device |
| JP7348521B2 (en) | 2019-12-24 | 2023-09-21 | 日亜化学工業株式会社 | light emitting device |
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