JPH0480286A - Fluorescent high-pressure mercury lamp - Google Patents

Fluorescent high-pressure mercury lamp

Info

Publication number
JPH0480286A
JPH0480286A JP19529390A JP19529390A JPH0480286A JP H0480286 A JPH0480286 A JP H0480286A JP 19529390 A JP19529390 A JP 19529390A JP 19529390 A JP19529390 A JP 19529390A JP H0480286 A JPH0480286 A JP H0480286A
Authority
JP
Japan
Prior art keywords
phosphor
pressure mercury
activated
mercury lamp
trivalent
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.)
Pending
Application number
JP19529390A
Other languages
Japanese (ja)
Inventor
Katsuaki Iwama
克昭 岩間
Toru Azuma
亨 東
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 Holdings Corp
Original Assignee
Matsushita Electronics Corp
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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP19529390A priority Critical patent/JPH0480286A/en
Publication of JPH0480286A publication Critical patent/JPH0480286A/en
Pending legal-status Critical Current

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  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Luminescent Compositions (AREA)

Abstract

PURPOSE:To improve greatly the color rendering properties of a fluorescent high-pressure mercury lamp and thereby expand its use in the field of interior lighting by constituting the phosphor coating of the fluorescent high-pressure mercury lamp by the use of four specific phosphors. CONSTITUTION:In a fluorescent high-pressure mercury lamp provided with a luminescent tube emitting visible and ultraviolet radiations, an outer tube enclosing the luminescent tube and a phosphor coating formed on the inner surface of the outer tube, the phosphor coating is composed of the following four phosphors: a first phosphor comprising yttrium aluminate activated with trivalent cerium; a second phosphor comprising barium magnesium aluminate co-activated with bivalent europium and bivalent manganise; a third phosphor comprising yttrium magnesium borate co-activated with trivalent cerium and trivalent terbium; and a fourth phosphor comprising at least one of yttrium vanadate activated with trivalent europium and yttrium vanadate phosphate activated with trivalent europium.

Description

【発明の詳細な説明】 産業上の利用分野 本発明は演色性を改善した蛍光高圧水銀灯に関するもの
である。
DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fluorescent high-pressure mercury lamp with improved color rendering.

従来の技術 蛍光高圧水銀灯の演色性を改善するために、その発光管
から放出される短波長青色域の水銀輝線出力を吸収する
作用がある蛍光体を使用することが試みられており、3
価のセリウム付活したイツトリウムアルミネート(Y3
Ae5012 : Ce”)を用い、赤色蛍光体く例え
ば、3価のユーロピウムで付活したイットリウムバナデ
ート)と組み合わせる方法が米国特許第4034257
号明細書に開示されている。
Conventional Technology In order to improve the color rendering properties of fluorescent high-pressure mercury lamps, attempts have been made to use phosphors that have the effect of absorbing the mercury emission line output in the short wavelength blue region emitted from the arc tubes.
Yttrium aluminate activated with valent cerium (Y3
U.S. Pat. No. 4,034,257 discloses a method using Ae5012: Ce") and combining it with a red phosphor (for example, yttrium vanadate activated with trivalent europium).
It is disclosed in the specification of No.

発明が解決しようとする課題 蛍光高圧水銀灯は、その優れた寿命特性により屋外照明
を中心にして広く一般照明に使用されている代表的な高
圧放電灯である。このランプの欠点は演色性が低いこと
にあり、C,1,E、の平均演色評価数Raは43程度
である。近年蛍光高圧水銀灯の演色性改善が試みられ、
従来の赤色蛍光体に加えて青緑色蛍光体を付加すること
により、そのRaは52程度にまで改善された。しかし
なから、この改善された演色性を有する蛍光高圧水銀灯
においても色の見え方を重視する屋内照明に用いるには
なお不充分であり、広く普及するには至っていない。
Problems to be Solved by the Invention Fluorescent high-pressure mercury lamps are typical high-pressure discharge lamps that are widely used for general lighting, mainly outdoor lighting, due to their excellent longevity characteristics. The disadvantage of this lamp is that its color rendering properties are low, and the average color rendering index Ra of C, 1, and E is about 43. In recent years, attempts have been made to improve the color rendering properties of fluorescent high-pressure mercury lamps.
By adding a blue-green phosphor in addition to the conventional red phosphor, its Ra was improved to about 52. However, even this fluorescent high-pressure mercury lamp with improved color rendering properties is still insufficient for use in indoor lighting where color appearance is important, and it has not become widely used.

このように、従来方法において演色性改善か充分になさ
れない理由の一つは、発光管から放出されている405
nmおよび436nmの水銀輝線出力か強すぎるためで
あることが知られている。
As described above, one of the reasons why the color rendering properties cannot be improved sufficiently in the conventional method is that the 405 emitted from the arc tube
It is known that this is because the mercury emission line output at wavelengths of 436 nm and 436 nm is too strong.

これらのうち、405nmの水銀II出力については酸
化チタン被膜を利用するなどして抑制することか可能で
あるが、このように単に水銀輝線出力を抑制することは
ランプ効果の低下を伴うため不適当とされている。すな
わち、従来の演色性改善形高圧水銀灯では前記短波長青
色域の水銀輝線出力を抑制することなく演色性の改善を
はかっているため、その改善も充分ではなく屋内照明に
広く普及させていくためには、なお−層の改善が望まれ
ている。
Among these, it is possible to suppress the mercury II output at 405 nm by using a titanium oxide film, but simply suppressing the mercury bright line output in this way is inappropriate because it involves a decrease in the lamp effect. It is said that In other words, in conventional high-pressure mercury lamps with improved color rendering properties, the color rendering properties are improved without suppressing the output of mercury bright lines in the short wavelength blue region, so the improvement is not sufficient, and it is necessary to spread the lamps widely for indoor lighting. However, it is still desired to improve the layer.

このような事情に基づいて、近年短波長青色域に吸収を
有する蛍光体が開発され、上記短波長青色域の水銀輝線
出力を抑制することによって生じるランプ効率の低下を
防止する検討かなされでいる。例えば、上記短波長青色
域に吸収を有する蛍光体としてY3.AQs○12 C
e+3(以下、−数式としてYAG:Ceと略記する)
を用い、従来の赤色蛍光体とともに高圧水銀灯に適用し
て演色性の改善を試みた例が前記米国特許第4034−
257号明細書に示されているが、それらのランプのR
aは51程度であり満足できるものではなかった。
Based on these circumstances, phosphors that absorb in the short wavelength blue region have been developed in recent years, and studies are being conducted to prevent the reduction in lamp efficiency caused by suppressing the mercury emission line output in the short wavelength blue region. . For example, Y3. AQs○12 C
e+3 (hereinafter abbreviated as YAG:Ce as a - formula)
An example of an attempt to improve color rendering by applying this to a high-pressure mercury lamp together with a conventional red phosphor is disclosed in the above-mentioned US Pat. No. 4,034-
No. 257, the R of those lamps is
a was about 51, which was not satisfactory.

課題を解決するための手段 以上のように、高圧水銀灯の演色性を改善するためには
、その発光管から放出される短波長青色域の水銀輝線出
力を抑制すると七もに従来の方法にみられるような赤色
域への発光の付加を行うだけては満足できる結果が得ら
れない。発明者らはさらに肯−黄緑色域にわたる広い波
長域に蛍光体による発光を付加する検討を行い、種々の
ランプを試作して高圧水銀灯の演色性を大幅に改善でき
ることを見いだした。すなわち、YAG:Ceと赤色蛍
光体を組み合わせた場合はすでに述べたようにRaは5
1程度であるが、YAG・Ceと赤色蛍光体に加えて青
緑色蛍光体くここでは、二価のユーロピウムおよび2価
のマンカンで共付活されたバリウムマグ不シウムアルミ
不一ト〉を追加した組合わせにおいてはRaは大幅に改
善され58程度になった。
Means for Solving the Problems As mentioned above, in order to improve the color rendering properties of high-pressure mercury lamps, it is necessary to suppress the output of mercury bright lines in the short wavelength blue region emitted from the arc tubes, which is different from conventional methods. It is not possible to obtain satisfactory results by simply adding light emission to the red region. The inventors further investigated adding light emission by a phosphor in a wide wavelength range covering the positive to yellow-green region, and found that the color rendering properties of high-pressure mercury lamps could be significantly improved by making various lamps. In other words, when YAG:Ce and red phosphor are combined, Ra is 5 as already mentioned.
1, but in addition to YAG/Ce and the red phosphor, a blue-green phosphor is added. In the combination, Ra was significantly improved to about 58.

また、YAG:Ceと赤色蛍光体および青緑色蛍光体に
加えてさらに緑色蛍光体(ここでは、3価のセリウムお
よび3価のテルビウムで共付活したイツトリウムマグネ
シウムボレート)を追加した組合せにおいて、そのRa
は60程度となることが見いだされた。ここで、青緑色
蛍光体として2価のユーロピウムおよび2価のマンガン
で共付活したバリウムマグネシウムアルミネートに限定
したのはランプ効率の低下を伴わないという条件を課し
たためである。また、緑色蛍光体として3価のセリウム
および3価のテルヒウムで共付活じたイツトリウムマグ
ネシウムボレートに限定したのは他の緑色蛍光体を用い
た場合と比較して寿命中の光速維持率の低下が少ないこ
とがわかったからである。
In addition, in addition to YAG:Ce, a red phosphor and a blue-green phosphor, a green phosphor (here, yttrium magnesium borate co-activated with trivalent cerium and trivalent terbium) is added, That Ra
was found to be about 60. Here, the blue-green phosphor was limited to barium magnesium aluminate co-activated with divalent europium and divalent manganese because the condition was imposed that the lamp efficiency would not be reduced. In addition, the fact that we limited the green phosphor to yttrium magnesium borate co-activated with trivalent cerium and trivalent terhium has a lower light speed maintenance rate during its lifetime than when using other green phosphors. This is because it was found that the decrease was small.

作用 かかる構成による七、高圧水銀灯の発光管か放出する4
05nmおよび436nmの水銀輝線出力を吸収する作
用と、紫外線によって励起され黄緑色域に発光を生じる
作用を併せ持つYAG Ceを用いることによる演色性
改善の効果と、高圧水銀灯の発光スペクトルにおいて欠
如している440nm〜540nmおよび590nm〜
700nm付近の波長域の光出力を蛍光体を用いて補う
ことによる演色性改善の効果が相乗的に作用するこ七に
よって、演色性を大幅に向上させることができる。
7. High-pressure mercury lamp arc tube emits 4.
The effect of improving color rendering by using YAG Ce, which has both the ability to absorb mercury emission line output at 05 nm and 436 nm and the ability to generate light in the yellow-green region when excited by ultraviolet rays, is lacking in the emission spectrum of high-pressure mercury lamps. 440nm~540nm and 590nm~
The effect of improving the color rendering properties by supplementing the light output in the wavelength range around 700 nm using a phosphor works synergistically, thereby making it possible to significantly improve the color rendering properties.

実施例 以下、本発明の一実施例について図面を用いて説明する
EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.

実施例1 Yo、5sVO4:Euo、os          
     70wt%′Bao、sMg+、53Af’
  14024:EuO,2,Mn0o7   15w
t%Yo、sMgo  7BsO+o:Ceo、+、T
bo、:+        10wt%Y2.sA& 
sO+2:Ceo、+              5
wt%上記混合物を用い、それに5ivt%の5i02
粉末を加えて充分に混合した後、10oW高圧水銀灯の
外管の内面に3.0■/ antの塗布量となるように
塗布した。得られたランプの100時間光束値ハ462
0 ルー メ”y、色温度!−14200K 。
Example 1 Yo, 5sVO4: Euo, os
70wt%'Bao, sMg+, 53Af'
14024:EuO,2,Mn0o7 15w
t%Yo,sMgo 7BsO+o:Ceo,+,T
bo, :+10wt%Y2. sA&
sO+2: CEO, +5
wt% using the above mixture and adding 5ivt% of 5i02
After adding the powder and thoroughly mixing it, it was applied to the inner surface of the outer bulb of a 10oW high-pressure mercury lamp at a coating amount of 3.0 μ/ant. The 100 hour luminous flux value of the obtained lamp was 462
0 lume"y, color temperature!-14200K.

Raは60であり、従来の蛍光高圧水銀灯のRa(50
−55程度)に比べて明らかな改善がみられた。
Ra is 60, which is higher than that of conventional fluorescent high-pressure mercury lamp (50
-55), a clear improvement was seen.

第1図は本実施例による100W蛍光高圧水銀灯の分光
分布を示す。第2図は各蛍光体の発光スペクトルを示す
。第2図の曲線1はBao、aMg+、53Ae140
24 : Euo、2.Mno、o7)曲線2はYo、
sM go、7BsO+o : CeO,I 、 T 
bo3X曲線3はYo、5sVO4: E uOo5の
ものである。
FIG. 1 shows the spectral distribution of the 100W fluorescent high-pressure mercury lamp according to this example. FIG. 2 shows the emission spectra of each phosphor. Curve 1 in Figure 2 is Bao, aMg+, 53Ae140
24: Euo, 2. Mno, o7) Curve 2 is Yo,
sM go, 7BsO+o: CeO, I, T
bo3X curve 3 is of Yo, 5sVO4: E uOo5.

第3図の曲線lは本実施例による100W蛍光高圧水銀
灯の寿命中の光束維持率の推移を示すもので、比較とし
てYo 9Mgo7Bso1o: Ce。
Curve 1 in FIG. 3 shows the change in luminous flux maintenance rate during the life of the 100W fluorescent high-pressure mercury lamp according to this example, and for comparison, Yo9Mgo7Bso1o:Ce.

Tbo、:+の代わりにY+、sS i Os : C
e。
Tbo, :+ instead of Y+, sS i Os : C
e.

Tbo3を緑色蛍光体として用いた場合のデータを曲線
2に示す。
Curve 2 shows data when Tbo3 is used as a green phosphor.

第3図から明らかなように、3価のセリウムおよび3価
のテルビウムで共付活したイツトリウムマグネシウムボ
レートが寿命中を通して安定な特性を示すことがわかる
As is clear from FIG. 3, it can be seen that yttrium magnesium borate co-activated with trivalent cerium and trivalent terbium exhibits stable characteristics throughout its life.

実施例2 実施例1と同じ蛍光体混合物を同様にして400W用外
管の内面に塗布し、400W蛍光高圧水銀灯を作製した
。得られたランプの100時間光束は24500ルーメ
ン、色温度は4050K。
Example 2 The same phosphor mixture as in Example 1 was similarly applied to the inner surface of a 400W outer bulb to produce a 400W fluorescent high-pressure mercury lamp. The resulting lamp has a 100 hour luminous flux of 24,500 lumens and a color temperature of 4,050K.

Raは58であり従来の蛍光高圧水銀灯のRa(50〜
55程度)に比べて明らかな改善がみられた。
Ra is 58, which is higher than that of conventional fluorescent high-pressure mercury lamps (50~
A clear improvement was seen compared to the previous version (approximately 55).

実施例3 Yo、5sVo、5sPo4s04:Euo、os  
     80wt 9゜Bao、sMg+、5sAe
 ++024:Euo、+、Mno、os    5i
vt%Yo、sMgo、5BsO+o:Ceo、 + 
、Tbo410wt ’。
Example 3 Yo, 5sVo, 5sPo4s04:Euo, os
80wt 9゜Bao, sMg+, 5sAe
++024: Euo, +, Mno, os 5i
vt%Yo, sMgo, 5BsO+o:Ceo, +
, Tbo410wt'.

Y2.sA& sO+2:Ceo、+        
     5wt%上記混合物を用い、それに3wt%
の5i02粉末を加えて充分に混合した後、100W高
圧水銀灯の外管の内面に4■/ cJの割合になるよう
塗布し、通常の方法により100W蛍光高圧水銀灯を作
製した。得られたランプの100時間光束は4400ル
ーメン、色温度は3900に、Ra1i62てあり、明
らかに改善された演色性を示した。
Y2. sA & sO+2: CEO, +
5 wt% using the above mixture, and 3 wt%
After adding the 5i02 powder and mixing thoroughly, it was coated on the inner surface of the outer bulb of a 100W high-pressure mercury lamp at a ratio of 4 cm/cJ, and a 100W fluorescent high-pressure mercury lamp was produced by the usual method. The resulting lamp had a 100-hour luminous flux of 4,400 lumens, a color temperature of 3,900, and Ra1i62, showing clearly improved color rendering properties.

発明の詳細 な説明したように、本発明の蛍光高圧水銀灯は、その蛍
光体被膜を3価のセリウムで付活したイツトリウムアル
ミネートである第1の蛍光体と、2価のユーロピウムお
よび2価のマンガンで共付活されたバリウムマグネシウ
ムアルミネートである第2の蛍光体と、3価のセリウム
および3価のテルビウムで共付活されたイツトリウムマ
グネシウムボレートである第3の蛍光体と、3価のユー
ロピウムで付活されたイットリウムハナデートおよび3
価のユーロピウムで付活されたイットリウムバナデート
フォスフェートの少な(とも−種である第4の蛍光体と
からなるように構成することにより、その演色性を従来
の蛍光高圧水銀灯に比べて大幅に改善することができ、
その用途を屋内照明の分野にも拡大できるものである。
As described in detail, the fluorescent high-pressure mercury lamp of the present invention comprises a first phosphor which is yttrium aluminate whose phosphor coating is activated with trivalent cerium, divalent europium and divalent cerium. a second phosphor which is barium magnesium aluminate co-activated with manganese; a third phosphor which is yttrium magnesium borate co-activated with trivalent cerium and trivalent terbium; Yttrium hanadate activated with valent europium and 3
By configuring the structure to consist of a fourth phosphor containing a small amount of yttrium vanadate phosphate activated with valent europium, its color rendering properties are significantly improved compared to conventional fluorescent high-pressure mercury lamps. can be improved,
Its application can also be extended to the field of indoor lighting.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明の実施例1の蛍光高圧水銀灯の分光分布
を示す図、第2図は本発明にかがる蛍光体の発光スペク
トルを示す図、第3図は本発明の実施例1の100W蛍
光高圧水銀灯の寿命中における光束維持率の維持を示す
図である。 代理人の氏名 弁理士 粟野重孝 はが1名区 知= IIOf:o− →(・区  \ い 口 廿 r c ++ト
FIG. 1 is a diagram showing the spectral distribution of a fluorescent high-pressure mercury lamp according to Example 1 of the present invention, FIG. 2 is a diagram showing the emission spectrum of the phosphor according to the present invention, and FIG. 3 is a diagram showing Example 1 of the present invention. FIG. 2 is a diagram showing the maintenance of the luminous flux maintenance rate during the life of a 100W fluorescent high-pressure mercury lamp. Name of agent: Patent attorney Shigetaka Awano

Claims (1)

【特許請求の範囲】[Claims]  可視輻射と紫外線輻射とを放出する発光管と、この発
光管を囲む外管と、この外管内面に被着形成された蛍光
体被膜とを備えた蛍光高圧水銀灯において、前記蛍光体
皮膜が3価のセリウムで付活されたイットリウムアルミ
ネートである第1の蛍光体と、2価のユーロピウムおよ
び2価のマンガンで共付活されたバリウムマグネシウム
アルミネートである第2の蛍光体と、3価のセリウムお
よび3価のテルビウムで共付活されたイットリウムマグ
ネシウムボレートである第3の蛍光体と、3価のユーロ
ピウムで付活されたイットリウムバナデートおよび3価
のユーロピウムで付活されたイットリウムバナデートフ
ォスフェートの少なくとも1種である第4の蛍光体とか
らなることを特徴とする蛍光高圧水銀灯。
A fluorescent high-pressure mercury lamp comprising an arc tube that emits visible radiation and ultraviolet radiation, an outer tube surrounding the arc tube, and a phosphor coating formed on the inner surface of the outer tube, wherein the phosphor coating is a first phosphor that is yttrium aluminate activated with divalent cerium; a second phosphor that is barium magnesium aluminate coactivated with divalent europium and divalent manganese; a third phosphor that is yttrium magnesium borate coactivated with cerium and trivalent terbium; yttrium vanadate activated with trivalent europium; and yttrium vanadate activated with trivalent europium. A fluorescent high-pressure mercury lamp comprising a fourth phosphor that is at least one type of phosphate.
JP19529390A 1990-07-23 1990-07-23 Fluorescent high-pressure mercury lamp Pending JPH0480286A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19529390A JPH0480286A (en) 1990-07-23 1990-07-23 Fluorescent high-pressure mercury lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19529390A JPH0480286A (en) 1990-07-23 1990-07-23 Fluorescent high-pressure mercury lamp

Publications (1)

Publication Number Publication Date
JPH0480286A true JPH0480286A (en) 1992-03-13

Family

ID=16338749

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19529390A Pending JPH0480286A (en) 1990-07-23 1990-07-23 Fluorescent high-pressure mercury lamp

Country Status (1)

Country Link
JP (1) JPH0480286A (en)

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WO2006072919A3 (en) * 2005-01-10 2006-09-21 Philips Intellectual Property Illumination system comprising barium magnesium aluminate phosphor
US7329988B2 (en) 1996-07-29 2008-02-12 Nichia Corporation Light emitting device with blue light LED and phosphor components

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US7682848B2 (en) 1996-07-29 2010-03-23 Nichia Corporation Light emitting device with blue light LED and phosphor components
JP2011009793A (en) * 1996-07-29 2011-01-13 Nichia Corp Light emitting device and display device
JP2013102196A (en) * 1996-07-29 2013-05-23 Nichia Chem Ind Ltd Light-emitting device and display unit
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