JP3171438B2 - Phosphor and fluorescent lamp - Google Patents

Phosphor and fluorescent lamp

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Publication number
JP3171438B2
JP3171438B2 JP32615588A JP32615588A JP3171438B2 JP 3171438 B2 JP3171438 B2 JP 3171438B2 JP 32615588 A JP32615588 A JP 32615588A JP 32615588 A JP32615588 A JP 32615588A JP 3171438 B2 JP3171438 B2 JP 3171438B2
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JP
Japan
Prior art keywords
phosphor
fluorescent lamp
emitting
powder
particle size
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.)
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JP32615588A
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Japanese (ja)
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JPH02173087A (en
Inventor
賢二 寺島
智治 戸村
秀徳 伊藤
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Toshiba Corp
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Toshiba Corp
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Description

【発明の詳細な説明】 [発明の目的] (産業上の利用分野) この発明はセリウムとテルビウムとで付活された緑色
発光希土類アルミン酸・珪酸・燐酸塩蛍光体又は希土類
硼酸・(珪酸)・燐酸塩蛍光体又は希土類正燐酸塩蛍光
体に係り、特に、管壁負荷の高い三波長域発光形蛍光ラ
ンプ用に好適な緑色を発光する蛍光体及び蛍光ランプに
関する。
DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial application field) This invention relates to a green-emitting rare earth aluminate / silicic acid / phosphate phosphor or rare earth boric acid / (silicic acid) activated with cerium and terbium. The present invention relates to a phosphate phosphor or a rare earth orthophosphate phosphor, and more particularly, to a phosphor and a fluorescent lamp which emit green light suitable for a three-wavelength band fluorescent lamp having a high tube wall load.

(従来の技術) 近年、一般照明用蛍光ランプとして、高演色性と高効
率性とを同時に満足する三波長域発光形蛍光ランプの普
及には、目覚ましいものがある。この種の蛍光ランプに
は、比較的狭帯域の発光スペクトル分布を有する青色・
緑色・赤色発光蛍光体が用いられている。
(Prior Art) In recent years, as a fluorescent lamp for general illumination, a three-wavelength band light emitting fluorescent lamp that satisfies both high color rendering properties and high efficiency has been remarkably popularized. This type of fluorescent lamp has a blue / light emission spectrum with a relatively narrow band emission spectrum.
Green and red light emitting phosphors are used.

従来、セリウムとテルビウムとで付活された緑色発光
希土類アルミン酸・珪酸・燐酸塩蛍光体としては、
[(Re,Tb,Ce)2O3・Al2O3・SiO2・P2O5](特公昭60−
9543号公報)が知られている。又、希土類硼酸・珪酸・
燐酸塩蛍光体としては、[(Re,Tb,Ce)2O3・SiO2・P2O
5・B2O3](特公昭62−44792号公報)がある。或いは、
希土類正燐酸塩蛍光体としては、[(Te,Tb,Ce)PO4
(特公昭59−43508号公報)が知られている。
Conventionally, as a green-emitting rare earth aluminate / silicic acid / phosphate phosphor activated by cerium and terbium,
[(Re, Tb, Ce) 2 O 3 · Al 2 O 3 · SiO 2 · P 2 O 5 ]
No. 9543). Also, rare earth boric acid, silicic acid,
[(Re, Tb, Ce) 2 O 3 .SiO 2 .P 2 O]
5 · B 2 O 3 ] (JP-B-62-44792). Or,
[(Te, Tb, Ce) PO 4 ] as a rare earth orthophosphate phosphor
(JP-B-59-43508) is known.

又、三波長域発光形蛍光ランプでは、その全光束(発
光出力)に対して緑色発光蛍光体の占める割合いが非常
に高く、従って緑色発光蛍光体の特性が三波長域発光形
蛍光ランプの性能に大きく影響を及ぼす。
In the three-wavelength band fluorescent lamp, the ratio of the green light-emitting phosphor to the total luminous flux (light output) is very high, and therefore, the characteristics of the green light-emitting phosphor are different from those of the three-wavelength band fluorescent lamp. Significantly affects performance.

(発明が解決しようとする課題) 従って、三波長域発光形蛍光ランプにおいては、性能
が優れ、且つ安定した緑色発光蛍光体を用いる必要があ
る。ところが、従来の希土類アルミン酸・珪酸・燐酸塩
蛍光体、或いは希土類硼酸・(珪酸)・燐酸塩蛍光体、
又は希土類正燐酸塩蛍光体は赤色発光蛍光体に比し、高
負荷の蛍光ランプ(0.055W/cm2以上)での点灯中におい
て蛍光体表面層に吸着・吸収・残存した水銀との反応に
よると推測される着色現象が著しい。
(Problems to be Solved by the Invention) Therefore, in a three-wavelength band fluorescent lamp, it is necessary to use a green light-emitting phosphor that is excellent in performance and stable. However, conventional rare earth aluminate / silicic acid / phosphate phosphor, or rare earth boric acid / (silicic acid) / phosphate phosphor,
Or, rare-earth orthophosphate phosphors are compared with red-emitting phosphors, and are caused by the reaction with mercury adsorbed / absorbed / remaining on the phosphor surface layer during operation with a high-load fluorescent lamp (0.055 W / cm 2 or more). The coloring phenomenon estimated to be remarkable.

そのため、商品価値を大きく損ねていたばかりでな
く、発光出力の低下も大きく、問題となっていた。
Therefore, not only has the commercial value been greatly impaired, but the emission output has also been greatly reduced, which has been a problem.

その要因を鋭意、調査・実験を行ない、解析したとこ
ろ、蛍光体表面層に吸着・吸収・残存する水銀との反応
と推測される着色(薄茶褐色)現象は、蛍光体の表面の
接触帯電量と密接な相関関係があることが判った。
When the factors were investigated, analyzed, and analyzed, the color (light brown) phenomenon, which is presumed to be the reaction with mercury adsorbed, absorbed, and remaining on the phosphor surface layer, was determined by the amount of contact charge on the phosphor surface. Has a close correlation with

尚、接触帯電量とは、蛍光体の表面にキャリア粉体が
接触する時、正電荷が帯電するが、この帯電量を接触帯
電量という。接触帯電量を測定する装置としては、例え
ばファラデーケージを用いたブローオフ粉体帯電測定装
置があり、キャリア粉体としては例えばソーダ石灰ガラ
スビーズが使用される(特開平5−325901号公報に関連
事項の記載がある)。
The term "contact charge amount" means that a positive charge is charged when the carrier powder comes into contact with the surface of the phosphor, and this charge amount is referred to as a contact charge amount. As a device for measuring the contact charge amount, there is, for example, a blow-off powder charge measuring device using a Faraday cage, and as a carrier powder, for example, soda-lime glass beads are used (see Japanese Patent Application Laid-Open No. 5-325901). Is described).

即ち、蛍光体の表面の接触帯電量の差異により、著し
く着色現象が変化することを見出し、その結果、発光出
力も大きく影響を受けることが判った。
That is, it was found that the coloring phenomenon was significantly changed due to the difference in the amount of contact charge on the surface of the phosphor, and as a result, it was found that the light emission output was also greatly affected.

以上述べたように、三波長域発光形蛍光ランプ用緑色
発光蛍光体としては、発光出力が高く、且つ蛍光ランプ
での点灯中の着色現象の小さいものの出現が望まれてい
る。
As described above, it is desired that a green light-emitting phosphor for a three-wavelength band light-emitting fluorescent lamp that has a high light-emission output and has a small coloring phenomenon during lighting of the fluorescent lamp is produced.

そこで、この発明は上記課題を解決するためになされ
たもので、高負荷の蛍光ランプ(0.055W/cm2)において
発光出力が高く、且つこの種の蛍光ランプでの点灯中の
着色現象の小さい緑色発光希土類アルミン酸・珪酸・燐
酸塩蛍光体、或いは希土類硼酸・(珪酸)・燐酸塩蛍光
体、又は希土類正燐酸塩蛍光体及び蛍光ランプを提供す
ることを目的とする。
Therefore, the present invention has been made to solve the above-described problems, and has a high light-emitting output in a high-load fluorescent lamp (0.055 W / cm 2 ) and a small coloring phenomenon during operation of this kind of fluorescent lamp. It is an object of the present invention to provide a green light emitting rare earth aluminate / silicic acid / phosphate phosphor, a rare earth boric acid / (silicic acid) / phosphate phosphor, or a rare earth orthophosphate phosphor and a fluorescent lamp.

[発明の構成] (課題を解決するための手段) この発明は、セリウムとテルビウムとで付活された一
般式(Re1-a-bTbaCeb2O3・eAl2O3・fSiO2・gP2O5(但
し、Reはイットリウム(Y),ランタン(La),ガドリ
ニウム(Gd)の中から選ばれた少なくとも一種で且つa
>0,b>0,0<a+b<1,e≧0,f≧0,g>0,0.8≦e+f+
g≦1.30)、又は、(Re1-a-bTbaCeb2O3・xSiO2・yP2
O5・zB2O3(但し、Reはイットリウム(Y),ランタン
(La),ガドリニウム(Gd)の中から選ばれた少なくと
も一種で且つa>0,b>0,0<a+b<1,x≧0,y>0.5×1
0-6≦z≦6×10-3)で表わされ、管壁負荷が0.055W/cm
2以上にして、単位重量あたりの蛍光体表面の接触帯電
量がα−Al2O3粉末(粒度約0.1μm)とSiO2粉末(粒度
約2.0μm)との間にある蛍光体である。
[Constitution of the Invention] (Means for Solving the Problems) The present invention relates to a general formula (Re 1-ab Tb a Ce b ) 2 O 3 .eAl 2 O 3 .fSiO 2 activated by cerium and terbium. GP 2 O 5 (where Re is at least one selected from yttrium (Y), lanthanum (La), gadolinium (Gd) and a
> 0, b> 0,0 <a + b <1, e ≧ 0, f ≧ 0, g> 0,0.8 ≦ e + f +
g ≦ 1.30) or (Re 1-ab Tb a Ce b ) 2 O 3 .xSiO 2 .yP 2
O 5 .zB 2 O 3 (where Re is at least one selected from yttrium (Y), lanthanum (La), and gadolinium (Gd), and a> 0, b> 0, 0 <a + b <1, x ≧ 0, y> 0.5 × 1
0 −6 ≦ z ≦ 6 × 10 −3 ), and the tube wall load is 0.055 W / cm
2 or more, the phosphor having a contact charge amount per unit weight of the phosphor surface between the α-Al 2 O 3 powder (particle size of about 0.1 μm) and the SiO 2 powder (particle size of about 2.0 μm).

尚、粒度約0.1μmとは、0.03〜0.1μm、粒度約2.0
μmとは、0.5〜2.0μmにおける範囲を言う。
The particle size of about 0.1 μm is 0.03-0.1 μm, and the particle size is about 2.0.
μm refers to a range from 0.5 to 2.0 μm.

又、この発明は、上記の蛍光体からなる蛍光膜を備
え、管壁負荷が0.055W/cm2以上である蛍光ランプであ
る。
Further, the present invention is a fluorescent lamp including a fluorescent film made of the above-mentioned phosphor and having a tube wall load of 0.055 W / cm 2 or more.

(作用) この発明によれば、緑色発光蛍光体は、高負荷蛍光ラ
ンプ(0.055W/cm2以上)において点灯中での着色現象が
なく、非常に安定したランプ特性が得られる。
(Operation) According to the present invention, the green light-emitting phosphor does not have a coloring phenomenon during lighting in a high-load fluorescent lamp (0.055 W / cm 2 or more), and extremely stable lamp characteristics can be obtained.

即ち、この作用効果は、管壁負荷が0.055W/cm2以上の
蛍光ランプにおいて顕著なものとなるものであって、0.
055W/cm2未満の管壁負荷の蛍光ランプにおいては、その
作用効果は殆ど認められないか、又は認められてもその
効果は甚だ小さい(第1図参照)。
That is, this effect is remarkable in a fluorescent lamp having a tube wall load of 0.055 W / cm 2 or more.
In a fluorescent lamp having a tube wall load of less than 055 W / cm 2 , the effect is hardly recognized, or even if it is recognized, the effect is extremely small (see FIG. 1).

更には、蛍光体表面の接触帯電量がα−Al2O3粉末
(粒度約0.1μm)より極性が+であって、その絶対値
が大きい場合、且つSiO2粉末(粒度約2.0μm)より極
性が−であって、その絶対値が大きい場合、高負荷蛍光
ランプ(0.055W/cm2以上)に用いると、著しい着色現象
を呈し、商品価値が著しく損なわれると共に、放電も不
安定となり、実用的には使用不可能なものとなる(第2
図参照)。
Further, when the contact charge amount on the phosphor surface is + more polar than α-Al 2 O 3 powder (particle size about 0.1 μm) and the absolute value is larger, and when the contact charge amount is larger than SiO 2 powder (particle size about 2.0 μm). When the polarity is-and the absolute value is large, when used for a high-load fluorescent lamp (0.055 W / cm 2 or more), a remarkable coloring phenomenon is exhibited, the commercial value is significantly impaired, and the discharge becomes unstable, It becomes practically unusable (second
See figure).

又、第2図は、緑色発光希土類アルミン酸・珪酸・燐
酸塩蛍光体、或いは希土類硼酸・(珪酸)・燐酸塩蛍光
体、又は希土類正燐酸塩蛍光体であれば、全く同様の傾
向を示し、接触帯電序列と着色現象の程度とは、明確な
対応性を有するものである。
FIG. 2 shows exactly the same tendency with a green-emitting rare earth aluminate / silicic acid / phosphate phosphor, a rare earth boric acid / (silicic acid) / phosphate phosphor, or a rare earth orthophosphate phosphor. The order of contact charging and the degree of the coloring phenomenon have a clear correspondence.

尚、蛍光体粒子の接触帯電量の測定には、市販の吸引
式ファラデーケージ法の装置を用い、更には、測定用試
料として、ポリプロピレン容器中にて予め前処理したも
のを用いた。
The contact charge amount of the phosphor particles was measured using a commercially available suction-type Faraday cage method apparatus, and a measurement sample that had been pre-treated in a polypropylene container was used.

更に、点灯中での着色現象と蛍光体表面に吸着・吸引
した水銀の量とは密接に関連しており、着色現象の差異
と吸着・吸収した水銀量との間には正の相関性が認めら
れるものである。
Furthermore, the coloring phenomenon during lighting is closely related to the amount of mercury adsorbed / absorbed on the phosphor surface, and there is a positive correlation between the difference in coloring phenomenon and the amount of mercury absorbed / absorbed. It is acceptable.

このことから、この発明の単位重量当りの蛍光体表面
の接触帯電量がα−Al2O3粉末(粒度約0.1μm)とSiO2
粉末(粒度約2.0μm)との間にある緑色発光希土類蛍
光体は、高負荷の蛍光ランプ(0.055W/cm2以上)におい
て発光出力が高く、点灯中の着色現象も小さく、実用化
の寄与は大なるものがある。
From this, the contact charge amount of the phosphor surface per unit weight according to the present invention is α-Al 2 O 3 powder (particle size about 0.1 μm) and SiO 2
Powder green emitting rare-earth phosphor is between (particle size approximately 2.0 .mu.m) is high emission output in the high-load fluorescent lamp (0.055W / cm 2 or higher), coloring phenomenon during lighting is small, the contribution of commercialization There is a great thing.

(実施例) 以下、この発明の実施例(2例)に係る蛍光体につ
き、製造方法的に詳細に説明する。
(Example) Hereinafter, a phosphor according to an example (two examples) of the present invention will be described in detail in terms of a manufacturing method.

実施例−1 先ず、純水2の入った3のビーカに、常法により
調製された(La0.60Tb0.15Ce0.252O3・0.1Al2O3・0.1
SiO2・0.95P2O5で表わされる緑色発光蛍光体200gを入れ
る。その蛍光体懸濁液の入ったビーカを市販の超音波洗
浄機(50kHz)に装着し、10分間、超音波洗浄を行っ
た。
Example 1 First, (La 0.60 Tb 0.15 Ce 0.25 ) 2 O 3 .0.1 Al 2 O 3 .0.1 prepared by a conventional method in a 3 beaker containing pure water 2.
200 g of a green light-emitting phosphor represented by SiO 2 · 0.95P 2 O 5 is charged. The beaker containing the phosphor suspension was attached to a commercially available ultrasonic cleaner (50 kHz), and subjected to ultrasonic cleaning for 10 minutes.

洗浄後、デカンテーションにより上澄み液を除去し、
濾過、乾燥した。この蛍光体の接触帯電量を測定したと
ころ、−1.0×10-12c(クーロン)/gであった。又、同
時に超音波洗浄をしない従来例の蛍光体の接触帯電量、
α−Al2O3粉末(粒度約0.1μm)及びSiO2粉末(粒度約
2.0μm)のそれは、それぞれ−1.0×10-9c/g、+1.0×
10-8c/g、−8.0×10-10c/gであった。
After washing, remove the supernatant by decantation,
Filtration and drying. When the contact charge amount of this phosphor was measured, it was -1.0 × 10 −12 c (coulomb) / g. Also, the contact charge amount of the conventional phosphor without ultrasonic cleaning at the same time,
α-Al 2 O 3 powder (particle size about 0.1 μm) and SiO 2 powder (particle size about
2.0 μm) are −1.0 × 10 −9 c / g and + 1.0 ×
It was 10 −8 c / g and −8.0 × 10 −10 c / g.

更には、上述した方法により得られた蛍光体を用いて
通常の方法で4ワット蛍光ランプFL−4(15.5mmφ)
(管壁負荷0.11W/cm2)を製作し、その蛍光ランプを500
時間点灯し、蛍光ランプの着色現象(薄茶褐色)の程度
をAランプからC--ランクの7段階に区分し、評価し
た。
Further, a 4-watt fluorescent lamp FL-4 (15.5 mmφ) is used in a usual manner using the phosphor obtained by the above-described method.
(Tube wall load 0.11W / cm 2 ) and the fluorescent lamp is 500
The lamp was turned on for a period of time, and the degree of the coloring phenomenon (light brown) of the fluorescent lamp was classified into seven grades from the A lamp to the C - rank and evaluated.

この発明の緑色発光蛍光体を用いた蛍光ランプの着色
現象の程度は、Aランクであるのに対して、従来例の緑
色発光蛍光体のそれは、C-ランクであった。
The degree of the coloring phenomenon of the fluorescent lamp using the green light-emitting phosphor of the present invention was ranked A, whereas that of the conventional green light-emitting phosphor was C - rank.

尚、着色現象の程度の7段階については、次のように
区分した。
The seven stages of the coloring phenomenon were classified as follows.

Aランク…着色現象認められず。A-ランク…極く僅か
に着色が認められる。
Rank A: No coloring phenomenon was observed. A - Rank: Very slight coloring is observed.

Bランク…僅かに着色が認められる。B-ランク…若干
着色が認められる。
B rank: Slight coloring is observed. B - Rank: Some coloring is observed.

Cランク…薄茶褐色が着色が認められる。C-ランク…
薄茶褐色の着色の程度がCランクより劣る。C--ランク
…茶褐色の着色が認められる。
C rank: Light brown coloration is recognized. C - Rank ...
The degree of the light brown coloration is inferior to the C rank. C - Rank: Brown coloring is recognized.

実施例−2 先ず、純水2の入った3のビーカに、常法により
調製された(La0.40Tb0.10Ce0.502O3・0.2SiO2・0.96
P2O5・4×10-5B2O3で表わされる緑色発光蛍光体200gを
入れる。その蛍光体懸濁液を撹拌しつつ、アンモニア水
にてPH8〜9に調整する。その状態で、30分撹拌を続け
る。その後、濾過、乾燥し、この発明の蛍光体を得る。
Example-2 First, (La 0.40 Tb 0.10 Ce 0.50 ) 2 O 3 .0.2SiO 2 .0.96 prepared by a conventional method in a 3 beaker containing pure water 2.
Add green emitting phosphor 200g represented by P 2 O 5 · 4 × 10 -5 B 2 O 3. The pH of the phosphor suspension is adjusted to 8 to 9 with aqueous ammonia while stirring. In this state, stirring is continued for 30 minutes. Thereafter, the mixture is filtered and dried to obtain the phosphor of the present invention.

この蛍光体及び従来例の接触帯電量は、+1.5×10-12
及び−2.5×10-9c/gであった。
The contact charge amount of this phosphor and the conventional example is + 1.5 × 10 −12
And -2.5 × 10 -9 c / g.

更には、実施例−1と同様に4ワット蛍光ランプFL−
4を製作し、評価した結果、この発明の蛍光体ではAラ
ンクであるのに対して、従来例の蛍光体ではC-ランクで
あった。
Further, a 4-watt fluorescent lamp FL-
4 manufactured and evaluated results, whereas in the phosphor of the present invention is A rank, the phosphors of the prior art C - was ranked.

以上記述したように、この発明による緑色発光希土類
蛍光体は、高負荷の蛍光ランプ(0.055W/cm2以上)にお
いて、点灯中での着色現象がなく、発光出力の高い、非
常に安定したランプ特性が得られるものである。
As described above, the green light-emitting rare-earth phosphor according to the present invention is a very stable lamp having a high emission output without a coloring phenomenon during operation in a high-load fluorescent lamp (0.055 W / cm 2 or more). Characteristics are obtained.

次に、上述した蛍光体からなる蛍光膜を備えた蛍光ラ
ンプの例を第3図に示す。蛍光ランプは図に示すよう
に、バルブ(1)内面に被着された蛍光膜(2)を備
え、更に、バルブ(1)内に所定圧の放電用ガスを封入
してなり、バルブ(1)の両端部に取付けられた電極
(3)に所定電圧を印加し、励起源によって蛍光膜
(2)が発光するものである。
Next, FIG. 3 shows an example of a fluorescent lamp provided with a phosphor film made of the above-mentioned phosphor. As shown in the figure, the fluorescent lamp includes a fluorescent film (2) attached to the inner surface of a bulb (1), and further includes a discharge gas of a predetermined pressure sealed in the bulb (1). A predetermined voltage is applied to the electrodes (3) attached to both ends of the fluorescent film (2), and the fluorescent film (2) emits light by the excitation source.

この発明は、上記のこの発明に係る蛍光体を具備する
蛍光ランプを含むものである。
The present invention includes a fluorescent lamp including the phosphor according to the present invention.

[発明の効果] 以上説明したように、この発明によれば、高負荷蛍光
ランプ(0.055W/cm2以上)において、点灯中での着色現
象がなく、従って発光出力の高い、ランプ特性の安定し
た緑色発光蛍光体及び蛍光ランプを実現することが出来
る。
[Effects of the Invention] As described above, according to the present invention, in a high-load fluorescent lamp (0.055 W / cm 2 or more), there is no coloring phenomenon during lighting, and therefore, the light emission output is high and the lamp characteristics are stable. Green phosphor and fluorescent lamp can be realized.

【図面の簡単な説明】[Brief description of the drawings]

第1図は蛍光ランプの管壁負荷と着色現象の程度との関
係を示す曲線図、第2図は接触帯電序列と着色現象の程
度との関係を示す曲線図、第3図はこの発明の蛍光体か
らなる蛍光膜を備えた蛍光ランプの一実施例を一部断面
にして示す正面図である。 (2)……蛍光膜。
FIG. 1 is a curve diagram showing the relationship between the tube wall load of the fluorescent lamp and the degree of the coloring phenomenon, FIG. 2 is a curve diagram showing the relationship between the contact charging sequence and the degree of the coloring phenomenon, and FIG. FIG. 2 is a front view showing, in partial cross section, one embodiment of a fluorescent lamp provided with a phosphor film made of a phosphor. (2) Fluorescent film.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 秀徳 神奈川県横須賀市船越町1丁目201番地 1 株式会社東芝横須賀工場内 (56)参考文献 特開 昭54−42874(JP,A) 「応用物理」第52巻第8号(1983) p.674−679 (58)調査した分野(Int.Cl.7,DB名) C09K 11/81 H01J 61/44 ────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hidenori Ito 1-1201 Funakoshi-cho, Yokosuka City, Kanagawa Prefecture 1 Inside the Yokosuka Plant, Toshiba Corporation (56) References JP 54-54874 (JP, A) Vol. 52, No. 8, (1983) p. 674-679 (58) Field surveyed (Int. Cl. 7 , DB name) C09K 11/81 H01J 61/44

Claims (2)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】セリウムとテルビウムとで付活された一般
式 (Re1-a-bTbaCeb2O3・eAl2O3・fSiO2・gP2O5 (但し、Reはイットリウム(Y)、ランタン(La)、ガ
ドリニウム(Gd)の中から選ばれた少なくとも一種で且
つa>0,b>0,0<a+b<1,e≧0,f≧0,g>0,0.8≦e+
f+g≦1.30)、又は、 (Re1-a-bTbaCeb2O3・xSiO2・yP2O5・zB2O3 (但し、Reはイットリウム(Y)、ランタン(La)、ガ
ドリニウム(Gd)の中から選ばれた少なくとも一種で且
つ)a>0,b>0,0<a+b<1,x≧0,y>0.5×10-6≦z
≦6×10-3)で表わされ、管壁負荷が0.055W/cm2以上の
蛍光ランプに用いられる蛍光体であって、単位重量あた
りの蛍光体表面の接触帯電量がα−Al2O3粉末(粒度約
0.1μm)とSiO2粉末(粒度約2.0μm)との間にあるこ
とを特徴とする、蛍光体。
1. A general formula (Re 1-ab Tb a Ce b ) 2 O 3 .eAl 2 O 3 .fSiO 2 .gP 2 O 5 activated by cerium and terbium (where Re is yttrium (Y ), Lanthanum (La), gadolinium (Gd), and a> 0, b> 0, 0 <a + b <1, e ≧ 0, f ≧ 0, g> 0, 0.8 ≦ e +
f + g ≦ 1.30) or (Re 1-ab Tb a Ce b ) 2 O 3 .xSiO 2 .yP 2 O 5 .zB 2 O 3 (where Re is yttrium (Y), lanthanum (La), gadolinium ( Gd) and at least one selected from Gd) and a> 0, b> 0, 0 <a + b <1, x ≧ 0, y> 0.5 × 10 −6 ≦ z
≦ 6 × 10 −3 ), which is used in a fluorescent lamp having a tube wall load of 0.055 W / cm 2 or more, wherein the contact charge amount of the phosphor surface per unit weight is α-Al 2. O 3 powder (particle size about
0.1 μm) and a SiO 2 powder (particle size: about 2.0 μm).
【請求項2】請求項1記載の蛍光体からなる蛍光膜を備
え、管壁負荷が0.055W/cm2以上であることを特徴とす
る、蛍光ランプ。
2. A fluorescent lamp comprising a fluorescent film made of the phosphor according to claim 1, wherein a tube wall load is 0.055 W / cm 2 or more.
JP32615588A 1988-12-26 1988-12-26 Phosphor and fluorescent lamp Expired - Fee Related JP3171438B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP32615588A JP3171438B2 (en) 1988-12-26 1988-12-26 Phosphor and fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP32615588A JP3171438B2 (en) 1988-12-26 1988-12-26 Phosphor and fluorescent lamp

Publications (2)

Publication Number Publication Date
JPH02173087A JPH02173087A (en) 1990-07-04
JP3171438B2 true JP3171438B2 (en) 2001-05-28

Family

ID=18184666

Family Applications (1)

Application Number Title Priority Date Filing Date
JP32615588A Expired - Fee Related JP3171438B2 (en) 1988-12-26 1988-12-26 Phosphor and fluorescent lamp

Country Status (1)

Country Link
JP (1) JP3171438B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0726097B2 (en) * 1990-07-19 1995-03-22 株式会社東芝 Green light emitting phosphor for three wavelength band fluorescent lamp and three wavelength band fluorescent lamp using the same
JPH0733510B2 (en) * 1990-07-19 1995-04-12 株式会社東芝 Green phosphor for three-wavelength emission type fluorescent lamp and three-wavelength emission type fluorescent lamp using the same
JP2653576B2 (en) * 1990-08-31 1997-09-17 株式会社東芝 Low pressure mercury vapor discharge lamp

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL181470C (en) * 1977-08-23 1987-08-17 Philips Nv LOW-PRESSURE MERCURY DISCHARGE LAMP.
JPS5816597B2 (en) * 1977-09-12 1983-03-31 株式会社東芝 How to make light bulbs

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
「応用物理」第52巻第8号(1983)p.674−679

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