JPH10214600A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPH10214600A JPH10214600A JP1561897A JP1561897A JPH10214600A JP H10214600 A JPH10214600 A JP H10214600A JP 1561897 A JP1561897 A JP 1561897A JP 1561897 A JP1561897 A JP 1561897A JP H10214600 A JPH10214600 A JP H10214600A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- light emitting
- emission peak
- activated
- fluorescent lamp
- 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.)
- Granted
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は蛍光ランプに関
し、特にマンガン付活弗化ゲルマン酸マグネシウム蛍光
体を含む複数の蛍光体を使用した白熱電球と同等以上の
照明効果の得られる蛍光ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fluorescent lamp, and more particularly, to a fluorescent lamp having a lighting effect equal to or higher than that of an incandescent lamp using a plurality of phosphors including a manganese-activated magnesium fluorogermanate phosphor.
【０００２】[0002]
【従来の技術】一般に、人間の目は、周囲の光環境の影
響を受けるために光の種類を正しく識別することは困難
であるが、光によって照らされた物体色から、わずかな
色感の違いを感じることができる。又、光のエネルギ−
分布は、物体色の見え方を様々に変化させるために、人
間の心理に大きな影響を与える。従って、照明設計を考
える際には、それぞれの空間に相応しい光源を選択する
ことが大きなポイントとなる。2. Description of the Related Art In general, it is difficult for human eyes to correctly identify the type of light because of the influence of the surrounding light environment. However, the human eye has a slight color sensation from an object color illuminated by light. You can feel the difference. Also, the energy of light
The distribution has a great effect on human psychology because the appearance of the object color is changed in various ways. Therefore, when considering lighting design, it is important to select a light source appropriate for each space.
【０００３】例えばゆったりとくつろぎたい時、暖かい
雰囲気空間が望まれる時などには、室内照明には主とし
て白熱電球が使用される。この白熱電球は、図５に示す
ような分光エネルギ−分布特性を有しており、しかも、
赤色，橙色が強調されることから、室内照明に使用した
場合には照明空間に暖か味のある雰囲気を醸し出すこと
ができる上、物体色の見え方も比較的に好ましいもので
ある。[0003] For example, when the user wants to relax comfortably or when a warm atmosphere space is desired, an incandescent light bulb is mainly used for indoor lighting. This incandescent lamp has a spectral energy distribution characteristic as shown in FIG.
Since the red and orange colors are emphasized, a warm atmosphere can be created in the illumination space when used for indoor lighting, and the appearance of the object color is relatively favorable.
【０００４】しかしながら、この白熱電球は効率（消費
電力に対する明るさ：Ｌｍ／Ｗ）が低いために、所望の
照度を得るためには多数の白熱電球を使用しなければな
らない。このために、電力消費量が増加し、電力料金が
高騰する。その上、夏場には白熱電球からの発熱量が多
いことから、冷房効果が阻害されるようになるし、一定
水準の冷房効果を維持するには冷房機器の冷房能力を必
要以上に高めなければならず、設備費と共に、電力料金
が一層に高騰することになる。However, since this incandescent lamp has low efficiency (brightness with respect to power consumption: Lm / W), a large number of incandescent lamps must be used to obtain a desired illuminance. For this reason, the power consumption increases and the power rate rises. In addition, the cooling effect is hindered in the summer due to the large amount of heat generated by the incandescent bulb, and the cooling capacity of cooling equipment must be increased more than necessary to maintain a certain level of cooling effect. Rather, the electricity cost rises further with the equipment cost.
【０００５】このような点に鑑み、白熱蛍光ランプが提
案され、実用化されている。この白熱蛍光ランプは、例
えば直管のガラスバルブの内面に複数の蛍光体を混合し
てなる発光層を形成して構成されており、図６に示すよ
うな分光エネルギ−分布特性を有している。この白熱蛍
光ランプによれば、同じ消費電力でほぼ５倍の明るさが
得られる上、色温度が２８００Ｋに設定されていること
から、白熱電球と同様に照明空間に暖か味のある雰囲気
を醸し出すことができる。しかも、効率が白熱電球に比
べて高い上、発熱量が少ないことから、夏場における冷
房機器の冷房能力への影響を最小限に止めることがで
き、設備費は勿論のこと、電力料金をも低減できるもの
である。In view of the above, incandescent fluorescent lamps have been proposed and put into practical use. This incandescent fluorescent lamp is formed, for example, by forming a light emitting layer formed by mixing a plurality of phosphors on the inner surface of a straight tube glass bulb, and has a spectral energy distribution characteristic as shown in FIG. I have. According to this incandescent fluorescent lamp, almost five times the brightness can be obtained with the same power consumption, and since the color temperature is set to 2800K, a warm taste atmosphere is created in the lighting space like the incandescent lamp. be able to. In addition, the efficiency is higher than that of incandescent bulbs and the amount of heat generated is small, so the effect on the cooling capacity of the cooling equipment in the summer can be minimized, and not only the equipment cost but also the electricity rate are reduced. You can do it.
【０００６】しかしながら、白熱電球に比べれば、明る
さはほぼ５倍程度に改善できるものの、食材などの照明
効果がかなり劣るという欠点がある。[0006] However, although the brightness can be improved to about 5 times as compared with the incandescent lamp, there is a drawback that the lighting effect of foodstuffs and the like is considerably inferior.
【０００７】[0007]
【発明が解決しようとする課題】従って、従来において
は、三波長形蛍光ランプが提案され、実用化されてい
る。この三波長形蛍光ランプは、例えばガラスバルブの
内面に青色領域，緑色領域，赤色領域に発光ピ−クを有
する複数の希土類蛍光体を混合した混合蛍光体にて発光
層を形成すると共に、ガラスバルブのそれぞれの端部に
電極を配置して構成されており、図７に示すような分光
エネルギ−分布特性を有している。Therefore, conventionally, a three-wavelength fluorescent lamp has been proposed and put into practical use. In this three-wavelength fluorescent lamp, for example, a light-emitting layer is formed of a mixed phosphor obtained by mixing a plurality of rare-earth phosphors having light-emitting peaks in a blue region, a green region, and a red region on the inner surface of a glass bulb. Electrodes are arranged at the respective ends of the bulb, and have spectral energy distribution characteristics as shown in FIG.
【０００８】この蛍光ランプによれば、効率が例えば白
熱蛍光ランプの５５（Ｌｍ／Ｗ）に比較して９５（Ｌｍ
／Ｗ）と高く、明るさも白熱蛍光ランプの１．５倍程度
に改善されている上、色温度が３０００Ｋに設定されて
いることから、照明空間に暖か味のある雰囲気を醸し出
すことができる上、高効率により照明設備費を一層に低
減でき、夏場における冷房機器の冷房能力への影響を最
小限に止めることができ、電力料金を低減できるなどの
効果が期待できるものの、食材（肉，マグロなどの赤色
の物体色）が鮮やかに見えにくく、十分な照明効果を発
揮することができないという問題がある。According to this fluorescent lamp, the efficiency is 95 (Lm / W) compared to, for example, 55 (Lm / W) of an incandescent fluorescent lamp.
/ W), the brightness is improved to about 1.5 times that of the incandescent fluorescent lamp, and the color temperature is set to 3000K, so that a warm atmosphere can be created in the lighting space. Although the efficiency of lighting equipment can be further reduced by high efficiency, the effect on the cooling capacity of cooling equipment in the summer can be minimized, and the effects such as reduction of the electricity rate can be expected. Red object color) is difficult to see clearly, and there is a problem that a sufficient lighting effect cannot be exhibited.
【０００９】それ故に、本発明の目的は、落ち着いた雰
囲気の照明効果を損なうことなく、各種の物体色を有す
る食材をより鮮やかにきれいに照明でき、白熱電球と同
等以上の照明効果の得られる蛍光ランプを提供すること
にある。SUMMARY OF THE INVENTION It is therefore an object of the present invention to provide a fluorescent material which can illuminate foodstuffs having various object colors more vividly and clearly without impairing the lighting effect of a calm atmosphere, and which can provide a lighting effect equal to or higher than that of an incandescent lamp. It is to provide a lamp.
【００１０】[0010]
【課題を解決するための手段】従って、本発明は、上述
の目的を達成するために、ガラスバルブの内面に複数の
蛍光体を含む発光層を形成してなり、前記発光層は、青
色領域，緑色領域，赤色領域，深赤色領域に発光ピ−ク
を有する蛍光体にて、ＣＩＥ（国際照明委員会）色度図
における色度座標がｘ＝０．４０３〜０．４２３，ｙ＝
０．３６５〜０．３８５の範囲に存在し、かつ５４０ｎ
ｍの発光ピ−クに対する６６０ｎｍの発光ピ−クのエネ
ルギ−比（６６０／５４０ｎｍ）が３４〜５２％、５４
０ｎｍの発光ピ−クに対する４５０ｎｍの発光ピ−クの
エネルギ−比（４５０／５４０ｎｍ）が４〜１０％とな
るように構成したことを特徴とする。SUMMARY OF THE INVENTION Accordingly, in order to achieve the above object, the present invention comprises forming a light emitting layer containing a plurality of phosphors on an inner surface of a glass bulb, wherein the light emitting layer has a blue region. , Green, red, and deep red regions, the chromaticity coordinates of which are x = 0.403 to 0.423 and y = 4 in the CIE (International Commission on Illumination) chromaticity diagram.
In the range of 0.365 to 0.385 and 540n
The energy ratio (660/540 nm) of the 660 nm emission peak to the m emission peak is 34-52%, 54
The energy ratio (450/540 nm) of the 450 nm emission peak to the 0 nm emission peak is 4 to 10%.
【００１１】又、本発明の第２の発明は、ガラスバルブ
の内面に保護層を形成すると共に、この保護層上に複数
の蛍光体を含む発光層を形成してなり、前記発光層は、
青色領域，緑色領域，赤色領域，深赤色領域に発光ピ−
クを有する蛍光体にて、ＣＩＥ色度図における色度座標
がｘ＝０．４０３〜０．４２３，ｙ＝０．３６５〜０．
３８５の範囲に存在し、かつ５４０ｎｍの発光ピ−クに
対する６６０ｎｍの発光ピ−クのエネルギ−比（６６０
／５４０ｎｍ）が３４〜５２％、５４０ｎｍの発光ピ−
クに対する４５０ｎｍの発光ピ−クのエネルギ−比（４
５０／５４０ｎｍ）が４〜１０％となるように構成した
ことを特徴とし、第３の発明は、前記保護層を、蛍光体
より粒径の小さいアルミナなどの絶縁部材にて構成した
ことを特徴とする。According to a second aspect of the present invention, a protective layer is formed on the inner surface of a glass bulb, and a light emitting layer containing a plurality of phosphors is formed on the protective layer.
Light emission peaks in blue, green, red, and deep red areas
In the phosphor having a black matrix, the chromaticity coordinates in the CIE chromaticity diagram are x = 0.403 to 0.423, and y = 0.365 to 0.35.
Energy ratio of the 660 nm emission peak to the 540 nm emission peak (660
/ 540 nm) is 34 to 52% and the emission peak at 540 nm
Energy ratio of 450 nm emission peak to peak (4
(50/540 nm) is 4 to 10%, and the third invention is characterized in that the protective layer is formed of an insulating member such as alumina having a smaller particle size than the phosphor. And
【００１２】さらに、本発明の第４の発明は、前記ガラ
スバルブが直管の場合の発光層において、青色領域に発
光ピ−クを有する蛍光体がユ−ロピウム付活クロロリン
酸ストロンチウム・カルシウム・バリウム蛍光体、緑色
領域に発光ピ−クを有する蛍光体がセリウム，テルビウ
ム付活リン酸ランタン蛍光体、赤色領域に発光ピ−クを
有する蛍光体がユ−ロピウム付活酸化イットリウム蛍光
体、深赤色領域に発光ピ−クを有する蛍光体がマンガン
付活弗化ゲルマン酸マグネシウム蛍光体であることを特
徴とし、本発明の第５の発明は、前記ガラスバルブが曲
管の場合の発光層において、青色領域に発光ピ−クを有
する蛍光体がユ−ロピウム，マンガン付活アルミン酸バ
リウム・マグネシウム蛍光体、緑色領域に発光ピ−クを
有する蛍光体がセリウム，テルビウム付活リン酸ランタ
ン蛍光体、赤色領域に発光ピ−クを有する蛍光体がユ−
ロピウム付活酸化イットリウム蛍光体、深赤色領域に発
光ピ−クを有する蛍光体がマンガン付活弗化ゲルマン酸
マグネシウム蛍光体であることを特徴とする。Further, in a fourth aspect of the present invention, in the light emitting layer when the glass bulb is a straight tube, the phosphor having a light emitting peak in a blue region is europium-activated strontium calcium chlorophosphate. A barium phosphor, a phosphor having an emission peak in the green region is a cerium / terbium-activated lanthanum phosphate phosphor, a phosphor having an emission peak in the red region is a europium-activated yttrium oxide phosphor, The phosphor having an emission peak in the red region is a manganese-activated magnesium fluorogermanate phosphor, and the fifth invention of the present invention provides a light-emitting layer in which the glass bulb is a curved tube. The phosphor having an emission peak in the blue region is europium or manganese-activated barium / magnesium aluminate phosphor, and the phosphor having the emission peak in the green region is the phosphor. Um, terbium-activated lanthanum phosphate phosphor, light emission peak in the red region - phosphor having a click is Yu -
The yttrium oxide phosphor activated with lopium and the phosphor having an emission peak in a deep red region are manganese activated magnesium fluorogermanate phosphor.
【００１３】[0013]
【発明の実施の形態】次に、本発明の１実施例について
説明する。ソ−ダライムガラス，鉛ガラス，低鉛ガラス
などからなる直管ないし曲管のガラスバルブの内面に
は、蛍光体より粒径が小さい絶縁部材にて保護層が形成
されており、この保護層上に複数の蛍光体を混合してな
る混合蛍光体にて発光層が形成されている。Next, one embodiment of the present invention will be described. A protective layer is formed on the inner surface of a straight or curved glass bulb made of soda lime glass, lead glass, low lead glass, or the like with an insulating member having a smaller particle size than the phosphor. A light emitting layer is formed on the mixed phosphor obtained by mixing a plurality of phosphors.
【００１４】保護層には、蛍光体の粒径より小さな粒
径、例えば５０ｍμ程度の粒径のアルミナ（Ａｌ
2 Ｏ3 ）などの絶縁部材が用いられ、ガラスバルブの内
面全体に形成される。特に、アルミナを用いる場合に
は、紫外線反射性が得られるために、水銀の共鳴線（２
５３．７ｎｍ）による発光層の励起がより効率的に行わ
れ、明るさを効果的に改善できる上、水銀とガラスバル
ブとの接触による変色をも抑制できる。尚、絶縁部材と
しては、アルミナの他、マグネシア（ＭｇＯ），チタニ
ア（ＴｉＯ2 ）なども使用できる。The protective layer is made of alumina (Al) having a particle size smaller than the particle size of the phosphor, for example, about 50 μm.
An insulating member such as 2 O 3 ) is used and is formed on the entire inner surface of the glass bulb. In particular, in the case of using alumina, since the ultraviolet reflection property is obtained, the resonance line of mercury (2
(53.7 nm), the light-emitting layer can be more efficiently excited, the brightness can be effectively improved, and the discoloration due to the contact between mercury and the glass bulb can be suppressed. As the insulating member, magnesia (MgO), titania (TiO 2 ) or the like can be used in addition to alumina.
【００１５】又、発光層は、青色領域（４３０〜４７０
ｎｍ），緑色領域（５２０〜５６０ｎｍ），赤色領域
（５９０〜６３０ｎｍ），深赤色領域（６４０〜６８０
ｎｍ）に発光ピ−クを有する蛍光体にて、ＣＩＥ色度図
における色度座標がｘ＝０．４０３〜０．４２３，ｙ＝
０．３６５〜０．３８５の範囲に存在し、かつ５４０ｎ
ｍの発光ピ−クに対する６６０ｎｍの発光ピ−クのエネ
ルギ−比（６６０／５４０ｎｍ）が３４〜５２％、５４
０ｎｍの発光ピ−クに対する４５０ｎｍの発光ピ−クの
エネルギ−比（４５０／５４０ｎｍ）が４〜１０％とな
るように構成されている。The light emitting layer has a blue region (430 to 470).
nm), green region (520-560 nm), red region (590-630 nm), deep red region (640-680).
nm), the chromaticity coordinates in the CIE chromaticity diagram are x = 0.403 to 0.423, y =
In the range of 0.365 to 0.385 and 540n
The energy ratio (660/540 nm) of the 660 nm emission peak to the m emission peak is 34-52%, 54
The energy ratio of the 450 nm emission peak to the 0 nm emission peak (450/540 nm) is 4 to 10%.
【００１６】この発光層は、直管のガラスバルブの場
合、具体的には例えば４５３ｎｍに発光ピ−クを有する
ユ−ロピウム付活クロロリン酸ストロンチウム・カルシ
ウム・バリウム蛍光体（（ＳｒＣａＢａ）5 （ＰＯ4 ）
3 Ｃｌ：Ｅｕ）と、５４４ｎｍに発光ピ−クを有するセ
リウム，テルビウム付活リン酸ランタン蛍光体（ＬａＰ
Ｏ4 ：Ｃｅ，Ｔｂ）と、６１１ｎｍに発光ピ−クを有す
るユ−ロピウム付活酸化イットリウム蛍光体（Ｙ
2 Ｏ3 ：Ｅｕ）と、６５８ｎｍに発光ピ−クを有するマ
ンガン付活弗化ゲルマン酸マグネシウム蛍光体（３．５
ＭｇＯ・０．５ＭｇＦ2・ＧｅＯ2 ：Ｍｎ）との混合蛍
光体にて形成されている。この発光層における混合蛍光
体の付着量は、例えば０．８〜３．５ｍｇ／ｃｍ2 に設
定されている。尚、ガラスバルブの端部には一対の電極
が配置されており、ガラスバルブの内部空間にはアルゴ
ンなどの不活性ガス，水銀などが封入されている。In the case of a straight tube glass bulb, this luminescent layer is specifically a europium-activated strontium calcium barium chlorophosphate phosphor ((SrCaBa) 5 (PO) having an emission peak at 453 nm, for example. 4 )
3 Cl: and Eu), emission peak in 544 nm - cerium having a click, terbium-activated lanthanum phosphate phosphor (LaP
O 4 : Ce, Tb) and a europium-activated yttrium oxide phosphor (Y) having an emission peak at 611 nm.
2 O 3 : Eu) and a manganese-activated magnesium fluorogermanate phosphor (3.5) having an emission peak at 658 nm.
MgO · 0.5MgF 2 · GeO 2: are formed by mixing phosphor with Mn). The attached amount of the mixed phosphor in the light emitting layer is set to, for example, 0.8 to 3.5 mg / cm 2 . In addition, a pair of electrodes is arranged at the end of the glass bulb, and an inert gas such as argon, mercury, or the like is sealed in the internal space of the glass bulb.
【００１７】一方、この発光層は、曲管のガラスバルブ
の場合、具体的には例えば４５０，５１５ｎｍに発光ピ
−クを有するユ−ロピウム，マンガン付活アルミン酸バ
リウム・マグネシウム蛍光体（ＢａＭｇ2 Ａｌ16Ｏ27：
Ｅｕ，Ｍｎ）と、５４４ｎｍに発光ピ−クを有するセリ
ウム，テルビウム付活リン酸ランタン蛍光体（ＬａＰＯ
4 ：Ｃｅ，Ｔｂ）と、６１１ｎｍに発光ピ−クを有する
ユ−ロピウム付活酸化イットリウム蛍光体（Ｙ2 Ｏ3 ：
Ｅｕ）と、６５８ｎｍに発光ピ−クを有するマンガン付
活弗化ゲルマン酸マグネシウム蛍光体（３．５ＭｇＯ・
０．５ＭｇＦ2・ＧｅＯ2 ：Ｍｎ）との混合蛍光体にて
形成されている。尚、ユ−ロピウム，マンガン付活アル
ミン酸バリウム・マグネシウム蛍光体はブル−グリ−ン
のボディカラ−を有している。On the other hand, when the light emitting layer is a curved tube glass bulb, specifically, for example, europium or manganese-activated barium magnesium aluminate phosphor (BaMg 2 ) having an emission peak at 450 or 515 nm is used. Al 16 O 27 :
Eu, Mn) and a cerium, terbium-activated lanthanum phosphate phosphor (LaPO4) having an emission peak at 544 nm.
4 : Ce, Tb) and a europium-activated yttrium oxide phosphor (Y 2 O 3 ) having an emission peak at 611 nm.
Eu) and a manganese-activated magnesium fluorogermanate phosphor having an emission peak at 658 nm (3.5 MgO ·
0.5MgF 2 · GeO 2: it is formed by mixing phosphor with Mn). The europium and manganese-activated barium magnesium aluminate phosphor has a blue-green body color.
【００１８】この蛍光ランプでは、ＣＩＥ色度図におけ
る色度座標がｘ＝０．４０３〜０．４２３，ｙ＝０．３
６５〜０．３８５の範囲に存在し、かつ５４０ｎｍの発
光ピ−クに対する６６０ｎｍの発光ピ−クのエネルギ−
比（６６０／５４０ｎｍ）が３４〜５２％、５４０ｎｍ
の発光ピ−クに対する４５０ｎｍの発光ピ−クのエネル
ギ−比（４５０／５４０ｎｍ）が４〜１０％となるよう
に設定されており、図１に示す分光エネルギ−分布特性
が得られる。そして、上述の条件を満たす限り落ち着い
た雰囲気の照明効果を損なうことなく、各種の物体色を
有する食材、特に食肉をより鮮やかにきれいに照明で
き、白熱電球と同等以上の照明効果を発揮することがで
きるものである。In this fluorescent lamp, the chromaticity coordinates in the CIE chromaticity diagram are x = 0.403 to 0.423, y = 0.3
The energy of the 660 nm emission peak is in the range of 65-0.385 and is 540 nm emission peak.
34-52% ratio (660/540 nm), 540 nm
The energy ratio (450/540 nm) of the 450 nm emission peak to the 450 nm emission peak is set to 4 to 10%, and the spectral energy distribution characteristics shown in FIG. 1 are obtained. And, as long as the above conditions are satisfied, foods having various object colors, particularly meat, can be illuminated more vividly and clearly without impairing the lighting effect of a calm atmosphere, and it can exhibit the same or more lighting effect as an incandescent bulb. You can do it.
【００１９】この点、本発明者は、色度座標において、
ｘ値を０．４１３に設定し、ｙ値を０．３６０〜０．３
９０の間で変化させて食肉（牛肉，豚肉），ピ−マン，
茄子の見え方を観察したところ、図２に示す結果が得ら
れた。尚、同図において、○印は食材の見え方が極めて
優れていることを、△印は実用範囲であることを、×印
は劣っていることをそれぞれ示している。同図から明ら
かなように、食肉の見え方はｙ値が０．３７３〜０．３
８５で、ピ−マン及び茄子の見え方はｙ値がそれぞれ
０．３７０〜０．３８５で極めて優れているが、食肉で
はｙ値が０．３６６〜０．３７０で、ピ−マン及び茄子
ではｙ値が０．３６０〜０．３６６，０．３９０でも実
用に供し得るものの、それ以外の範囲では劣っており、
望ましい照明は実現できない。従って、ｙ値は０．３６
５〜０．３８５の範囲内に設定しなければならない。
尚、ｘ値も同様な理由で、０．４０３〜０．４２３の範
囲に設定することが望ましい。In this regard, the present inventor has found that the chromaticity coordinates are:
Set the x value to 0.413 and set the y value to 0.360-0.3
90 (meat (beef, pork), pepper,
When the appearance of the eggplant was observed, the result shown in FIG. 2 was obtained. In the figure, a circle indicates that the appearance of the food is extremely excellent, a triangle indicates that the food is in a practical range, and a cross indicates that the food is inferior. As is clear from the figure, the appearance of the meat has a y value of 0.373 to 0.3.
The y-value is 0.370-0.385, which is very good, while the y-value is 0.366-0.370 for meat and the y-value is 0.366-0.370 for meat and eggplant. Although y values of 0.360 to 0.366 and 0.390 can be used practically, they are inferior in other ranges,
Desired lighting cannot be realized. Therefore, the y value is 0.36
Must be set in the range of 5-0.385.
It is desirable that the x value is set in the range of 0.403 to 0.423 for the same reason.
【００２０】又、本発明者は、食材の見え方は上述の色
度座標の他に、５４０ｎｍの発光ピ−クに対する６６０
ｎｍの発光ピ−クのエネルギ−比（６６０／５４０ｎ
ｍ）及び５４０ｎｍの発光ピ−クに対する４５０ｎｍの
発光ピ−クのエネルギ−比（４５０／５４０ｎｍ）が深
く関わっていることを見出し、この点、エネルギ−比
（６６０／５４０ｎｍ及び４５０／５４０ｎｍ）をそれ
ぞれ３２〜５３％及び２〜１２％の範囲で変化させて食
肉（豚肉），ピ−マン，茄子の見え方を観察したとこ
ろ、図３及び図４に示す結果が得られた。尚、同図にお
いて、○印は食肉の見え方が極めて優れていることを、
△印は実用範囲であることを、×印は劣っていることを
それぞれ示している。The inventor of the present invention has found that the appearance of the food is not only the chromaticity coordinates described above, but also the light emission peak at 540 nm.
nm emission peak energy ratio (660 / 540n
m) and the energy ratio of the 450 nm emission peak to the 540 nm emission peak (450/540 nm) was found to be closely related. In this regard, the energy ratios (660/540 nm and 450/540 nm) were determined. When the appearance of meat (pork), peppers, and eggplants was observed while changing them in the ranges of 32 to 53% and 2 to 12%, the results shown in FIGS. 3 and 4 were obtained. In the same figure, a circle indicates that the appearance of meat is extremely excellent.
The mark “△” indicates that it is within the practical range, and the mark “X” indicates that it is inferior.
【００２１】図３から明らかなように、食肉及び茄子の
見え方はエネルギ−比６６０／５４０が３９〜４８％
で、ピ−マンの見え方はエネルギ−比６６０／５４０が
３９〜５１％で極めて優れているが、食肉ではエネルギ
−比６６０／５４０が３５％，５１％で、ピ−マンでは
３２〜３５％，５３％で、茄子では３２〜３５％，５１
％でも実用に供し得るものの、それ以外の範囲では劣っ
ている。又、図４から明らかなように、食肉の見え方は
エネルギ−比４５０／５４０が４〜１０％で、ピ−マン
の見え方はエネルギ−比４５０／５４０が２〜１０％
で、茄子の見え方はエネルギ−比４５０／５４０が４〜
１２％で極めて優れているが、ピ−マンでは１２％で、
茄子では２％でも実用に供し得るものの、それ以外の範
囲では劣っており、望ましい照明は実現できない。従っ
て、エネルギ−比６６０／５４０及び４５０／５４０は
上述の色度座標値と相俟ってそれぞれ３４〜５２％，４
〜１０％の範囲に設定しなければならない。As is apparent from FIG. 3, the appearance of meat and eggplants is such that the energy ratio 660/540 is 39-48%.
The energy ratio of 660/540 is 39 to 51%, which is extremely excellent, but the meat has an energy ratio of 660/540 of 35% and 51%, and the energy ratio of pepper is 32 to 35%. %, 53%, and in eggplant, 32-35%, 51%
% Is practical, but is inferior in other ranges. As can be seen from FIG. 4, the appearance of meat has an energy ratio of 450/540 of 4 to 10%, and the appearance of peppers has an energy ratio of 450/540 of 2 to 10%.
So, the eggplant looks like the energy ratio 450/540 is 4 ~
At 12%, it is very good, but at Pepperman it is 12%,
In eggplant, even 2% can be used practically, but it is inferior in other ranges, and desirable illumination cannot be realized. Therefore, the energy ratios 660/540 and 450/540, together with the chromaticity coordinate values described above, are 34-52% and 4%, respectively.
Must be set in the range of -10%.
【００２２】さらに、ガラスバルブが曲管の場合におい
て、発光層の一部を構成する青色領域に発光ピ−クを有
する蛍光体としてユ−ロピウム，マンガン付活アルミン
酸バリウム・マグネシウム蛍光体が適用されているが、
この蛍光体はブル−グリ−ンのボディカラ−を有してい
るために、水銀の共鳴線の放出が多い曲管蛍光ランプに
おいて抑制効果が顕著であり、各種食材の見え方の改善
に貢献している。Further, when the glass bulb is a curved tube, europium, manganese-activated barium magnesium aluminate phosphor is applied as a phosphor having a light emitting peak in a blue region constituting a part of the light emitting layer. Has been
Since this phosphor has a blue-green body color, it has a remarkable suppression effect in a curved tube fluorescent lamp that emits a large amount of mercury resonance lines, contributing to an improvement in the appearance of various foodstuffs. ing.
【００２３】尚、本発明は、何ら上記実施例にのみ制約
されることなく、例えば各蛍光体は特定の発光領域に発
光ピ−クを有すれば、上述以外の蛍光体を適宜に組み合
わせて使用することもできる。又、保護層は場合によっ
ては省略できる。さらには、曲管蛍光ランプは環状の
他、Ｕ字状，二重Ｕ字状などの形態に構成することもで
きる。It should be noted that the present invention is not limited only to the above-described embodiment. For example, if each phosphor has a light-emitting peak in a specific light-emitting region, a phosphor other than those described above may be appropriately combined. Can also be used. The protective layer can be omitted in some cases. Further, the curved tube fluorescent lamp may be formed in a U-shape, a double U-shape or the like in addition to the annular shape.
【００２４】[0024]
【実施例】次に、第１の実験例について説明する。直管
のガラスバルブの内面にアルミナよりなる保護層を形成
すると共に、この保護層の上に、ユ−ロピウム付活クロ
ロリン酸ストロンチウム・カルシウム・バリウム蛍光体
と、セリウム，テルビウム付活リン酸ランタン蛍光体
と、ユ−ロピウム付活酸化イットリウム蛍光体と、マン
ガン付活弗化ゲルマン酸マグネシウム蛍光体とを重量比
でそれぞれ１０％、２０％、４５％、２５％の割合で混
合してなる混合蛍光体で発光層を形成した本発明にかか
るＦＬ４０Ｓタイプの蛍光ランプを製造した。Next, a first experimental example will be described. A protective layer made of alumina is formed on the inner surface of a straight tube glass bulb. On this protective layer, europium-activated strontium-calcium-barium chlorophosphate and cerium and terbium-activated lanthanum phosphate are applied. Fluorescent material obtained by mixing a body, europium-activated yttrium oxide phosphor, and manganese-activated magnesium fluorogermanate phosphor at a weight ratio of 10%, 20%, 45%, and 25%, respectively. A FL40S type fluorescent lamp according to the present invention, in which a light emitting layer was formed by a body, was manufactured.
【００２５】この蛍光ランプの各種特性を測定したとこ
ろ、次の結果が得られた。尚、分光エネルギ−分布特性
は図１に示す。これの全光束及び色温度はそれぞれ２７
２８Ｌｍ，３１８８Ｋであり、ＣＩＥ色度図における色
度座標はｘが０．４１２５，ｙが０．３７３１であり、
エネルギ−比６６０／５４０ｎｍ及び４５０／５４０ｎ
ｍはそれぞれ４３％、７％であった。又、この蛍光ラン
プにて室内照明したところ、落ち着いた雰囲気の照明効
果が得られ、各種の物体色を有する食材、特に食肉をよ
り鮮やかにきれいに照明でき、十分な照明効果を発揮す
ることができた。When the various characteristics of this fluorescent lamp were measured, the following results were obtained. The spectral energy distribution characteristics are shown in FIG. Its total luminous flux and color temperature are each 27.
28Lm, 3188K, and the chromaticity coordinates in the CIE chromaticity diagram are such that x is 0.4125 and y is 0.3731,
Energy ratio 660/540 nm and 450 / 540n
m was 43% and 7%, respectively. In addition, when this fluorescent lamp is illuminated indoors, a lighting effect of a calm atmosphere can be obtained, and foods having various object colors, particularly meat, can be illuminated more vividly and clearly, and a sufficient lighting effect can be exhibited. Was.
【００２６】次に、第２の実験例について説明する。曲
管のガラスバルブの内面にアルミナよりなる保護層を形
成すると共に、この保護層の上に、ユ−ロピウム，マン
ガン付活アルミン酸バリウム・マグネシウム蛍光体と、
セリウム，テルビウム付活リン酸ランタン蛍光体と、ユ
−ロピウム付活酸化イットリウム蛍光体と、マンガン付
活弗化ゲルマン酸マグネシウム蛍光体とを重量比でそれ
ぞれ１０％、２０％、４５％、２５％の割合で混合して
なる混合蛍光体で発光層を形成した本発明にかかるＦＣ
Ｌ３０タイプの蛍光ランプを製造した。Next, a second experimental example will be described. A protective layer made of alumina is formed on the inner surface of the glass bulb of the curved tube, and on this protective layer, europium, manganese-activated barium magnesium aluminate phosphor,
Cerium and terbium-activated lanthanum phosphate phosphors, europium-activated yttrium oxide phosphors, and manganese-activated magnesium fluorinated magnesium germanate phosphors by weight ratio of 10%, 20%, 45%, and 25%, respectively. FC according to the present invention, in which a light emitting layer is formed of a mixed phosphor obtained by mixing at a ratio of
An L30 type fluorescent lamp was manufactured.
【００２７】この蛍光ランプの各種特性を測定したとこ
ろ、次の結果が得られた。これの全光束及び色温度はそ
れぞれ１５３０Ｌｍ，３２００Ｋであり、ＣＩＥ色度図
における色度座標はｘが０．４１３，ｙが０．３７５で
あり、エネルギ−比６６０／５４０ｎｍ及び４５０／５
４０ｎｍはそれぞれ４５％、６％であった。又、この蛍
光ランプにて室内照明したところ、落ち着いた雰囲気の
照明効果が得られ、各種の物体色を有する食材、特に食
肉をより鮮やかにきれいに照明でき、十分な照明効果を
発揮することができた。When the various characteristics of this fluorescent lamp were measured, the following results were obtained. Its total luminous flux and color temperature are 1530 Lm and 3200 K, respectively, and the chromaticity coordinates in the CIE chromaticity diagram are x = 0.413 and y = 0.375, and the energy ratios 660/540 nm and 450/5.
40 nm was 45% and 6%, respectively. In addition, when this fluorescent lamp is illuminated indoors, a lighting effect of a calm atmosphere can be obtained, and foods having various object colors, particularly meat, can be illuminated more vividly and clearly, and a sufficient lighting effect can be exhibited. Was.
【００２８】[0028]
【発明の効果】以上のように、本発明によれば、ＣＩＥ
色度図における色度座標がｘ＝０．４０３〜０．４２
３，ｙ＝０．３６５〜０．３８５の範囲に存在し、かつ
５４０ｎｍの発光ピ−クに対する６６０ｎｍの発光ピ−
クのエネルギ−比（６６０／５４０ｎｍ）が３４〜５２
％、５４０ｎｍの発光ピ−クに対する４５０ｎｍの発光
ピ−クのエネルギ−比（４５０／５４０ｎｍ）が４〜１
０％となるように設定されているために、白熱電球と同
様に落ち着いた雰囲気の照明効果が得られ、さらに各種
の物体色を有する食材、特に食肉をより鮮やかにきれい
に照明でき、十分な照明効果を発揮することができる。As described above, according to the present invention, the CIE
The chromaticity coordinates in the chromaticity diagram are x = 0.403 to 0.42
3, y = 0.365-0.385, and 660 nm emission peak relative to 540 nm emission peak
Energy ratio (660/540 nm) of 34 to 52
%, The energy ratio of 450 nm emission peak to 450 nm emission peak (450/540 nm) is 4-1.
Since it is set to be 0%, a lighting effect of a calm atmosphere can be obtained similarly to an incandescent light bulb, and foods having various object colors, particularly meat, can be illuminated more vividly and neatly, and sufficient illumination is provided. The effect can be exhibited.
【００２９】又、発光層の一部を構成する蛍光体に、マ
ンガン付活弗化ゲルマン酸マグネシウム蛍光体のように
ボディカラ−が黄色であるものや、ユ−ロピウム，マン
ガン付活アルミン酸バリウム・マグネシウム蛍光体のよ
うにボディカラ−がブル−グリ−ンであるものを適用す
れば、水銀共鳴線を適正に抑制でき、各種食材，肌の見
え方などを改善できる。The phosphor constituting a part of the light emitting layer may be a phosphor having a yellow body color such as a manganese-activated magnesium fluorogermanate phosphor, or europium or manganese-activated barium aluminate. When a body whose body color is blue-green, such as a magnesium phosphor, is applied, mercury resonance lines can be appropriately suppressed, and various food materials, skin appearance, and the like can be improved.
【図１】本発明の１実施例にかかる蛍光ランプの分光エ
ネルギ−分布図。FIG. 1 is a spectral energy distribution diagram of a fluorescent lamp according to one embodiment of the present invention.
【図２】色度点ｙに対する各種食材の見え方を示す図。FIG. 2 is a view showing how various food materials look with respect to a chromaticity point y.
【図３】発光ピ−ク５４０ｎｍと６６０ｎｍとのエネル
ギ−比に対する各種食材の見え方を示す図。FIG. 3 is a diagram showing how various food materials look with respect to the energy ratio between the light emission peaks of 540 nm and 660 nm.
【図４】発光ピ−ク５４０ｎｍと４５０ｎｍとのエネル
ギ−比に対する各種食材の見え方を示す図。FIG. 4 is a view showing how various food materials look with respect to the energy ratio between the light emission peaks of 540 nm and 450 nm.
【図５】従来例にかかる白熱電球の分光エネルギ−分布
図。FIG. 5 is a spectral energy distribution diagram of an incandescent lamp according to a conventional example.
【図６】従来例にかかる白熱蛍光ランプの分光エネルギ
−分布図。FIG. 6 is a spectral energy distribution diagram of an incandescent fluorescent lamp according to a conventional example.
【図７】従来例にかかる三波長形蛍光ランプの分光エネ
ルギ−分布図。FIG. 7 is a spectral energy distribution diagram of a conventional three-wavelength fluorescent lamp.
Claims (5)
む発光層を形成してなり、前記発光層は、青色領域，緑
色領域，赤色領域，深赤色領域に発光ピ−クを有する蛍
光体にて、ＣＩＥ色度図における色度座標がｘ＝０．４
０３〜０．４２３，ｙ＝０．３６５〜０．３８５の範囲
に存在し、かつ５４０ｎｍの発光ピ−クに対する６６０
ｎｍの発光ピ−クのエネルギ−比（６６０／５４０ｎ
ｍ）が３４〜５２％、５４０ｎｍの発光ピ−クに対する
４５０ｎｍの発光ピ−クのエネルギ−比（４５０／５４
０ｎｍ）が４〜１０％となるように構成したことを特徴
とする蛍光ランプ。1. A light emitting layer containing a plurality of phosphors is formed on an inner surface of a glass bulb, and the light emitting layer has phosphors having emission peaks in blue, green, red, and deep red regions. , The chromaticity coordinate in the CIE chromaticity diagram is x = 0.4
03 to 0.423, y = 0.365 to 0.385, and 660 for an emission peak at 540 nm.
nm emission peak energy ratio (660 / 540n
m) is 34-52%, and the energy ratio of 450 nm emission peak to 540 nm emission peak (450/54).
(0 nm) is 4 to 10%.
と共に、この保護層上に複数の蛍光体を含む発光層を形
成してなり、前記発光層は、青色領域，緑色領域，赤色
領域，深赤色領域に発光ピ−クを有する蛍光体にて、Ｃ
ＩＥ色度図における色度座標がｘ＝０．４０３〜０．４
２３，ｙ＝０．３６５〜０．３８５の範囲に存在し、か
つ５４０ｎｍの発光ピ−クに対する６６０ｎｍの発光ピ
−クのエネルギ−比（６６０／５４０ｎｍ）が３４〜５
２％、５４０ｎｍの発光ピ−クに対する４５０ｎｍの発
光ピ−クのエネルギ−比（４５０／５４０ｎｍ）が４〜
１０％となるように構成したことを特徴とする蛍光ラン
プ。2. A protective layer is formed on an inner surface of a glass bulb, and a light emitting layer including a plurality of phosphors is formed on the protective layer. The light emitting layer includes a blue region, a green region, a red region, A phosphor having an emission peak in the deep red region,
The chromaticity coordinates in the IE chromaticity diagram are x = 0.403 to 0.4
23, y = 0.365-0.385, and the energy ratio of the 660 nm emission peak to the 540 nm emission peak (660/540 nm) is 34-5.
2%, the energy ratio of the 450 nm emission peak to the 540 nm emission peak (450/540 nm) is 4 to 4%.
A fluorescent lamp, wherein the fluorescent lamp is configured to be 10%.
いアルミナなどの絶縁部材にて構成したことを特徴とす
る請求項２記載の蛍光ランプ。3. The fluorescent lamp according to claim 2, wherein said protective layer is made of an insulating member such as alumina having a smaller particle size than the phosphor.
において、青色領域に発光ピ−クを有する蛍光体がユ−
ロピウム付活クロロリン酸ストロンチウム・カルシウム
・バリウム蛍光体、緑色領域に発光ピ−クを有する蛍光
体がセリウム，テルビウム付活リン酸ランタン蛍光体、
赤色領域に発光ピ−クを有する蛍光体がユ−ロピウム付
活酸化イットリウム蛍光体、深赤色領域に発光ピ−クを
有する蛍光体がマンガン付活弗化ゲルマン酸マグネシウ
ム蛍光体であることを特徴とする請求項１又は２記載の
蛍光ランプ。4. A phosphor having a light emitting peak in a blue region in a light emitting layer when said glass bulb is a straight tube.
A strontium calcium calcium barium chlorophosphate activated phosphor, a phosphor having a luminescent peak in a green region is a cerium or terbium activated lanthanum phosphate phosphor,
The phosphor having an emission peak in the red region is a europium-activated yttrium oxide phosphor, and the phosphor having an emission peak in the deep red region is a manganese-activated magnesium fluorinated magnesium germanate phosphor. The fluorescent lamp according to claim 1 or 2, wherein
において、青色領域に発光ピ−クを有する蛍光体がユ−
ロピウム，マンガン付活アルミン酸バリウム・マグネシ
ウム蛍光体、緑色領域に発光ピ−クを有する蛍光体がセ
リウム，テルビウム付活リン酸ランタン蛍光体、赤色領
域に発光ピ−クを有する蛍光体がユ−ロピウム付活酸化
イットリウム蛍光体、深赤色領域に発光ピ−クを有する
蛍光体がマンガン付活弗化ゲルマン酸マグネシウム蛍光
体であることを特徴とする請求項１又は２記載の蛍光ラ
ンプ。5. A phosphor having a light emitting peak in a blue region in a light emitting layer when the glass bulb is a curved tube.
Phosphors with luminous peaks in the green region are cerium and terbium-activated lanthanum phosphate phosphors, and phosphors with luminous peaks in the red region are U-based phosphors. 3. The fluorescent lamp according to claim 1, wherein the phosphor which is activated by yttrium oxide and the phosphor which has an emission peak in a deep red region is a phosphor which is activated by manganese and activated magnesium fluoride.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01561897A JP3678524B2 (en) | 1997-01-29 | 1997-01-29 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01561897A JP3678524B2 (en) | 1997-01-29 | 1997-01-29 | Fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH10214600A true JPH10214600A (en) | 1998-08-11 |
| JP3678524B2 JP3678524B2 (en) | 2005-08-03 |
Family
ID=11893707
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01561897A Expired - Lifetime JP3678524B2 (en) | 1997-01-29 | 1997-01-29 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3678524B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445119B1 (en) | 1998-03-24 | 2002-09-03 | Matsushita Electric Industrial Co., Ltd. | Combined light emitting discharge lamp and luminaire using such lamp |
| US6459197B1 (en) | 1998-09-29 | 2002-10-01 | Matsushita Electric Industrial Co., Ltd. | Fluorescent lamp and luminaire with improved illumination light in a low color temperature region |
| JP2011026527A (en) * | 2009-07-29 | 2011-02-10 | Nec Lighting Ltd | Phosphor for lighting everyday dish, and fluorescent lamp for lighting everyday dish by using the same |
-
1997
- 1997-01-29 JP JP01561897A patent/JP3678524B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6445119B1 (en) | 1998-03-24 | 2002-09-03 | Matsushita Electric Industrial Co., Ltd. | Combined light emitting discharge lamp and luminaire using such lamp |
| US6459197B1 (en) | 1998-09-29 | 2002-10-01 | Matsushita Electric Industrial Co., Ltd. | Fluorescent lamp and luminaire with improved illumination light in a low color temperature region |
| JP2011026527A (en) * | 2009-07-29 | 2011-02-10 | Nec Lighting Ltd | Phosphor for lighting everyday dish, and fluorescent lamp for lighting everyday dish by using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3678524B2 (en) | 2005-08-03 |
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