JPH02120389A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPH02120389A JPH02120389A JP27073288A JP27073288A JPH02120389A JP H02120389 A JPH02120389 A JP H02120389A JP 27073288 A JP27073288 A JP 27073288A JP 27073288 A JP27073288 A JP 27073288A JP H02120389 A JPH02120389 A JP H02120389A
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- blue
- emission peak
- phosphors
- wavelength
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 61
- 230000004907 flux Effects 0.000 abstract description 9
- 229910052684 Cerium Inorganic materials 0.000 abstract description 7
- 229910052771 Terbium Inorganic materials 0.000 abstract description 6
- 229910052746 lanthanum Inorganic materials 0.000 abstract description 4
- 229910052749 magnesium Inorganic materials 0.000 abstract description 4
- 229910052788 barium Inorganic materials 0.000 abstract description 2
- 230000006866 deterioration Effects 0.000 description 15
- -1 europium-activated barium Chemical class 0.000 description 12
- 229910052693 Europium Inorganic materials 0.000 description 7
- 239000011575 calcium Substances 0.000 description 7
- 238000009877 rendering Methods 0.000 description 6
- 229910052791 calcium Inorganic materials 0.000 description 5
- 230000007423 decrease Effects 0.000 description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011777 magnesium Substances 0.000 description 3
- 229910052712 strontium Inorganic materials 0.000 description 3
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 2
- QXQVDANUNXECKG-UHFFFAOYSA-N OP(O)(Cl)=O.OP(O)(Cl)=O.OP(O)(Cl)=O.P.P Chemical compound OP(O)(Cl)=O.OP(O)(Cl)=O.OP(O)(Cl)=O.P.P QXQVDANUNXECKG-UHFFFAOYSA-N 0.000 description 2
- 150000004645 aluminates Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- ZCCRTRYKDLFBSI-UHFFFAOYSA-L [O-]P([O-])(Cl)=O.P.[Sr+2] Chemical class [O-]P([O-])(Cl)=O.P.[Sr+2] ZCCRTRYKDLFBSI-UHFFFAOYSA-L 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 235000021317 phosphate Nutrition 0.000 description 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 150000003437 strontium Chemical class 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Luminescent Compositions (AREA)
Abstract
Description
【発明の詳細な説明】
（発明の目的〕
（産業上の利用分野）
本発明は狭帯域発光形蛍光ランプに関し、特にれに用い
られる蛍光体に関する。DETAILED DESCRIPTION OF THE INVENTION (Object of the Invention) (Industrial Field of Application) The present invention relates to a narrow-band fluorescent lamp, and more particularly to a phosphor used therein.
（従来の技術）
狭帯域発光形蛍光ランプの代表的なものとして三波長域
発光形蛍光ランプがある。これは理論的に最も高い効率
の得られる４４０〜４６０ｎｍ、５３０〜５５０ｎｌＩ
ｌ、 Ｂｏｏ 〜６２０ｎｍに発光ピークを持つ、青
、緑、赤に発光する３種の蛍光体を組合せて照明用光源
を得るものである。各蛍光体共裏効率の蛍光体が開発さ
れ高効率で高演色性という特長から近年急速に普及して
いる。現在−殻内に用いられている蛍光体としては青色
蛍光体ではユーロピウム付活バリウム、マグネシウム、
アルミン酸塩蛍光体［（Ｂａ、Ｍｇ） ３Ａｆｆａｏ２
７／ＥＬＪ］及びユーロピウム付活ストロンヂウムクロ
ロリン酸塩蛍光体［（Ｓｒｔｏ （ＰＯ４）ｅｃｆ１２
／Ｅｕｌ及び上記ストロンチウムの一部をカルシウム及
びバリウムで置換したユーロピウム付活ストロンチウム
、カルシウム、バリウムクロロリン酸塩蛍光体［（Ｓｒ
、Ｃａ、、Ｂａ）１０ （ＰＯ４）ｅ（ｆｆｌｚ ／Ｅ
Ｕ］ヤ、ユーロピウム付活ストロンチウム、力ルシウム
クロロリン酸塩蛍光体［（Ｓｒ、Ｃａ。(Prior Art) A typical narrow-band fluorescent lamp is a three-wavelength fluorescent lamp. This is 440-460nm, 530-550nlI, which theoretically provides the highest efficiency.
A light source for illumination is obtained by combining three types of phosphors that emit light in blue, green, and red, and have an emission peak at ~620 nm. Phosphors with different phosphors have been developed and have rapidly become popular in recent years due to their high efficiency and color rendering properties. Currently, the blue phosphors used in the shell are europium-activated barium, magnesium,
Aluminate phosphor [(Ba, Mg) 3Affao2
7/ELJ] and europium-activated strondium chlorophosphate phosphor [(Srto (PO4)ecf12
Europium-activated strontium, calcium, barium chlorophosphate phosphor [(Sr
,Ca,,Ba)10 (PO4)e(fflz /E
U] Ya, europium-activated strontium, lucium chlorophosphate phosphor [(Sr, Ca.
Ｂａ）１０ （ＰＯ４）ｅｃｎ２／Ｅｕ］等があり、又
緑色発光蛍光体としては、セリウム、テルビウム付活ラ
ンタン、リン酸塩［（Ｌａ、Ｃｅ。Ba)10(PO4)ecn2/Eu], and green-emitting phosphors include cerium, terbium-activated lanthanum, and phosphates [(La, Ce.
Ｔｂ）２０３・ ０．９Ｐ２０５・ ０．２Ｓ ｉ ０
２ ］、セリウム、テルビウム付活ランタン、ケイ酸塩
、セリウム、テルビウム付活アルミン酸塩蛍光体等があ
る。Tb) 203・0.9P205・0.2S i 0
2 ], cerium, terbium activated lanthanum, silicate, cerium, terbium activated aluminate phosphor, etc.
一方、赤色発光蛍光体としてはユーロピウム付活酸化イ
ツトリウム蛍光体［ＹｚＯ３／Ｅｕ］が主に用いられて
いる。これらはいずれも狭帯域発光の蛍光体で更に蛍光
ランプの効率向上のため改善が試みられている。On the other hand, a europium-activated yttrium oxide phosphor [YzO3/Eu] is mainly used as a red-emitting phosphor. All of these are phosphors that emit light in a narrow band, and attempts are being made to improve them in order to further improve the efficiency of fluorescent lamps.
（発明が解決しようとする課題）
前述のごとく三波長帯域発光形蛍光体ランプは蛍光体を
中心とした種々の改良の結果、高効率かつ高演色性を達
成している。(Problems to be Solved by the Invention) As mentioned above, the three-wavelength band emission type fluorescent lamp has achieved high efficiency and high color rendering properties as a result of various improvements centered on the fluorescent material.
しかし、青、緑、赤色発光の３種の蛍光体を組合せて用
いられる為、各々の蛍光体の特性に起因した問題点もあ
る。その代表的なものとして使用中に於ける発光色変化
という問題がある。これは、青、緑、赤色の３種の蛍光
体各々の劣化性の違いによるものであり、長時間の使用
に於いて各々の蛍光体の劣化に差を生ずることから、劣
化の大きい蛍光体の発光色が減少する方向に発光色が変
化してしまう。However, since three types of phosphors emitting blue, green, and red light are used in combination, there are problems caused by the characteristics of each phosphor. A typical example of this is the problem of luminescent color change during use. This is due to the difference in the deterioration properties of each of the three types of phosphors, blue, green, and red.As each phosphor deteriorates differently after long-term use, the phosphor with greater deterioration The emitted light color changes in the direction of decreasing the emitted light color.
現在、広く用いられている蛍光体の劣化特性を調べると
、いずれの蛍光体をみても青色発光蛍光体が他の蛍光体
に比べて劣化が大きい。このため３波長域発光形蛍光ラ
ンプに於いては長時間後に於いて橙色方向への色変化を
生ずる。（ＣＩＥ色度・表示でＸ、Ｙ値共上昇する方向
）
このことは、蛍光ランプ使用中において、時間の経過と
共にものの色彩が変って見えるという極めて大きな欠点
となっている。Examining the deterioration characteristics of currently widely used phosphors, we find that blue-emitting phosphors degrade more than other phosphors. For this reason, in a three-wavelength band fluorescent lamp, a color change toward orange occurs after a long period of time. (Direction in which both X and Y values increase in CIE chromaticity/display) This is an extremely serious drawback in that the colors of objects appear to change over time when fluorescent lamps are in use.
本発明は、上記問題点を解決し、劣化特性の改善された
青色発光蛍光体を有する蛍光ランプを提供することを目
的とする。An object of the present invention is to solve the above-mentioned problems and provide a fluorescent lamp having a blue-emitting phosphor with improved deterioration characteristics.
（発明の構成）
（課題を解決するための手段）
４４０〜４６０ｍに発光ピークを有する青色発光蛍光体
について種々の蛍光体を調査した結果、現在実用化され
ているユーロピウム付活バリウム、マグネシウムアルミ
ン酸塩蛍光体［（Ｂａ。(Structure of the Invention) (Means for Solving the Problem) As a result of investigating various blue-emitting phosphors having an emission peak at 440 to 460 m, we found that europium-activated barium and magnesium aluminate, which are currently in practical use. Salt phosphor [(Ba.
ＭＣＩ＞ ３Ａｆｆａｏ：ｚ７／Ｅｕ］、：ｘ−ロピウ
ム付活ストロンチウムクロロリン酸塩蛍光体［（Ｓｒ１
゜（ＰＯ４） ６ＣＩ２２ ／Ｅｕ］ 、ｌ Ｄピウ
ム付活ストロンチウム、カルシウム、バリウムクロロリ
ン酸塩蛍光体［（Ｓｒ、 Ｃａ）１ｏ （ＰＯ４） ｅ
（ｆｆ１２／Ｅｕ］、ユーロピウム付活ストロンチウム
、カルシウムクロロリン酸塩蛍光体［（Ｓｒ、Ｃａ。MCI>3Affao:z7/Eu], :x-ropium activated strontium chlorophosphate phosphor [(Sr1
゜(PO4) 6CI22 /Eu], l D Pium-activated strontium, calcium, barium chlorophosphate phosphor [(Sr, Ca)1o (PO4) e
(ff12/Eu], europium-activated strontium, calcium chlorophosphate phosphor [(Sr, Ca.
Ｂａ）１ｏ （ＰＯ４）ｅｃｆｈ ／Ｅｕ］を上回る劣
化特性の蛍光体は見い出せなかった。しかし本発明者等
はざらに広い領域に発光ピークを有する青色発光蛍光体
の中に劣化特性の良いものがあることを見い出した。そ
こでこれらの蛍光体組合せ使用することにより現行の三
波形蛍光ランプの明るさ、演色性をそこなわず、点灯時
間経過に伴う発光色変化を軽減する手段を検討し青色蛍
光体として３種の蛍光体を組合せることにより目的を達
成出来ることを見い出した。No phosphor with deterioration characteristics exceeding [Ba)1o (PO4)ecfh /Eu] was found. However, the present inventors have discovered that some blue-emitting phosphors having emission peaks in a roughly wide region have good deterioration characteristics. Therefore, by using a combination of these phosphors, we considered a method to reduce the change in emitted light color as the lighting time elapses without impairing the brightness and color rendering properties of current three-wave fluorescent lamps. He discovered that he could achieve his goals by combining bodies.
すなわち、４１０〜４３０ｍｍに発光ピークを有する一
般式Ｓｒ２ Ｐ２０７／Ｅｕで表わされる青色蛍光体と
、上記１１４０〜４６０ｎｍに発光ピークを有する青色
蛍光体と、４８０ｎ＋ｕに発光ピークを有する一般式Ｃ
ａ１ｏ （ＰＯ４） ｅ （Ｆ、 （ｆｆｌ＞ ２ ／
Ｓｂで表わされる青色蛍光体の３種の蛍光体を組合せた
青色蛍光体に５３０〜５５０ｍｍに発光ピークを有する
緑色蛍光体と、６００〜６２０ｎｎに発光ピークを有す
る赤色蛍光体とを組合せた蛍光体からなる蛍光膜を被着
形成した蛍光ランプを特徴とするものである。That is, a blue phosphor represented by the general formula Sr2P207/Eu having an emission peak at 410 to 430 nm, a blue phosphor having an emission peak at 1140 to 460 nm, and a general formula C having an emission peak at 480n+u.
a1o (PO4) e (F, (ffl> 2 /
A phosphor that is a combination of a blue phosphor that is a combination of three types of blue phosphors represented by Sb, a green phosphor that has an emission peak at 530 to 550 mm, and a red phosphor that has an emission peak at 600 to 620 nm. This fluorescent lamp is characterized by a fluorescent film coated with a fluorescent film consisting of:
（作 用）
４４０〜４６０止に発光ピークを有する青色発光蛍光体
に劣化特性の優れたより短波長の青色発光蛍光体を組合
せることにより、青色成分全体の劣化特性は改善される
と共に経時変化に於いてはより劣化の少ない短波長方向
に発光分布が傾く。この結果、緑色、赤色発光蛍光体と
組合せた白色系の狭帯域発光形蛍光ランプに於ける発光
色変化は大巾に改善される。しかし短波長青色は視感度
が低いことからランプの光束低下はさけられない。(Function) By combining a blue-emitting phosphor with an emission peak at 440 to 460 o'clock with a shorter-wavelength blue-emitting phosphor with excellent deterioration characteristics, the deterioration characteristics of the blue component as a whole are improved and changes over time are reduced. In this case, the emission distribution is tilted toward shorter wavelengths where there is less deterioration. As a result, the change in emission color in a white narrow-band fluorescent lamp combined with green and red emitting phosphors is greatly improved. However, since short-wavelength blue has low visibility, a decrease in the luminous flux of the lamp cannot be avoided.
一方、４４０〜４６０ｎｍの蛍光体に劣化特性の優れた
長波長タイプの青色発光蛍光体を組合せた場合は、青色
成分全体の劣化は改善されるが経時変化に於ける発光分
布変化はより長波長側に傾き、白色系の蛍光ランプに使
用した場合の発光色変化を改善することは出来ない。但
しランプでの光束は向上する方向にある。On the other hand, when a long-wavelength type blue-emitting phosphor with excellent deterioration characteristics is combined with a 440-460 nm phosphor, the overall deterioration of the blue component is improved, but the emission distribution changes over time at longer wavelengths. It tilts to the side and cannot improve the change in emitted light color when used in a white fluorescent lamp. However, the luminous flux of the lamp is improving.
又いずれの場合も青色蛍光部が巾広くなることがら演色
性は向上する方向にある。In either case, the color rendering properties tend to improve because the blue fluorescent region becomes wider.
以上の事から、本発明者等は蛍光体の選択を行い組合せ
た。Based on the above, the inventors selected and combined phosphors.
即ち４４０〜４６０ｎｍに発光ピークを有する青色発光
蛍光体とｈＯえる短波長タイプの蛍光体は４４０〜４６
０ｒ＋ｍ蛍光体より劣化特性が優れ、その発光分布の半
値巾は狭いことが望ましく、その最適発光ピークは４１
０〜４３０止が望ましい。４１０ｒｉｍより短波長とな
ると発光色変化を抑制する効果は大きくなるがランプで
の光束低下が大きくなる。又、４１０〜４３０ｎｍより
長波長となり４４０〜４６０ｒｏｎに近づくとランプで
の光束低下は押えられるが発光色変化を抑制する効果が
小さい。In other words, a blue-emitting phosphor with an emission peak at 440-460 nm and a short wavelength type phosphor with an emission peak of 440-460 nm.
It has better deterioration characteristics than the 0r+m phosphor, and it is desirable that the half-width of its emission distribution is narrow, and its optimal emission peak is 41
A range of 0 to 430 is desirable. When the wavelength is shorter than 410 rim, the effect of suppressing changes in luminescent color increases, but the luminous flux in the lamp decreases significantly. Further, when the wavelength is longer than 410 to 430 nm and approaches 440 to 460 ron, the decrease in luminous flux in the lamp can be suppressed, but the effect of suppressing changes in luminescent color is small.
一方、４４０〜４６０１ｍ蛍光体に加えるべ゛き長波長
タイプの蛍光体は４４０〜４６０止蛍光体の劣化に対し
、同等以上が良く、その発光分布は４５０ｎｍ蛍光体の
発光ピーク位置を大きく変化させない様な半値巾の広い
ことが望ましい。最適ピーク波長はランプ光束と発光色
変化の関係から４７０〜４９０ｎｍが良い。On the other hand, the long-wavelength type phosphor that should be added to the 440-4601m phosphor should be equivalent or better to the deterioration of the 440-460m phosphor, and its emission distribution will not significantly change the emission peak position of the 450nm phosphor. It is desirable to have a wide half-value width. The optimal peak wavelength is preferably 470 to 490 nm from the relationship between the lamp luminous flux and the change in emission color.
この様な見地から蛍光体の選択を行い４１０〜４３０ｎ
ｍ発光ピークを有するＳｒ２ Ｐ２Ｏ７／ＥＩＪ蛍光体
と、４８０ｎｍに発光ピークを有するＣａ１０（ＰＯ４
）ｅ （Ｆ、α）２／Ｓｂ蛍光体を見い出しランプ試作
によりその効果を確認した。From this point of view, the phosphor was selected and 410 to 430n
Sr2P2O7/EIJ phosphor with m emission peak and Ca10(PO4) with emission peak at 480nm.
)e (F, α)2/Sb phosphor was found and its effectiveness was confirmed by making a prototype lamp.
（実施例） 以下、本発明の実施例を詳細に説明する。(Example) Examples of the present invention will be described in detail below.
実施例１ 波長４５３ｎｍに発光ピークを有する（Ｂａ。Example 1 It has an emission peak at a wavelength of 453 nm (Ba.
Ｍ ｑ） ３ Ｍ１６０２ｖ／ Ｅ ＬＪ蛍光体、波長
４２０ｎｍ （７）Ｓｒ２Ｐ２０７／Ｅｒ蛍光体、波長
４８０ｎｍのＣａ１［）（ＰＯ４） ６（Ｆ、Ｃｕ）２
／Ｓｂ蛍光体を各々７０：１５：１５の割合で混合す
る。この混合蛍光体の発光ピークは殆ど変らず半値巾は
短波長側へややふくらんで３ｏｍ増大した。これに波長
５４３ｒｌｆｌｌの（Ｌ ａ、 Ｃｅ、 Ｔｂ）ｚ ０
３ ・０．９Ｐ２０５ ・０．２Ｓ ！０２緑色蛍光体
、波長６１１ ｎｍのＹ２０３／ＥＬＪ赤色蛍光体を混
合しランプ発光色を昼白色に調整し３０Ｗ円型蛍光ラン
プを製作した。M q) 3 M1602v/E LJ phosphor, wavelength 420 nm (7) Sr2P207/Er phosphor, wavelength 480 nm Ca1 [) (PO4) 6 (F, Cu) 2
/Sb phosphors are mixed in a ratio of 70:15:15, respectively. The emission peak of this mixed phosphor hardly changed, and the half-width swelled slightly toward the shorter wavelength side, increasing by 3 ohm. To this, (La, Ce, Tb)z 0 of wavelength 543rlfll
3 ・0.9P205 ・0.2S! A 30W circular fluorescent lamp was manufactured by mixing Y203/ELJ red phosphor with a wavelength of 611 nm and adjusting the lamp emission color to daylight white.
一方、Ｓｒ２ Ｐ２０７／ＥｕとＣａ１ｏ（ＰＯ４＞６
（Ｆ、α）２／Ｓｂの雨量光体を用いずに同様方法で同
じ＜３０Ｗ円型蛍光ランプを製作し比較用としたこれら
のランプに点灯初期と５００時間点灯後のランプ諸特性
を測定、比較した結果、３種の青色蛍光体混合タイプは
単一の青色蛍光体に比ベランプ光束で−０，５％、平均
演色計数０．６ポイント、発光色の色度値変化は約１／
４に軽減された。On the other hand, Sr2 P207/Eu and Ca1o (PO4>6
(F, α) We manufactured the same <30W circular fluorescent lamps using the same method without using the 2/Sb rain light body, and measured the lamp characteristics of these lamps for comparison at the initial stage of lighting and after 500 hours of lighting. As a result of the comparison, the three types of blue phosphor mixed type had a lamp luminous flux of -0.5% compared to a single blue phosphor, an average color rendering coefficient of 0.6 points, and a chromaticity value change of the emitted color of about 1/2.
It was reduced to 4.
なお、色度変化量はＣＩＥ色度値Ｘ、Ｙの変化量よりν
ΔＸ ＋ΔＹ２−として表現した。Note that the amount of chromaticity change is ν from the amount of change in CIE chromaticity values X and Y.
Expressed as ΔX + ΔY2−.
実施例２ 波長４５２ｎｍに発光ピークを有する（Ｂｒ。Example 2 It has an emission peak at a wavelength of 452 nm (Br.
Ｃａ）１ｏ （ＰＯ４＞ ａ（ｆｆ１２／Ｅｕ蛍光体、
波長４２０ｎｍのＳｒ２ Ｐ２０７／Ｅｕ蛍光体、波長
４８０ｎｍのＣａ１０ （ＰＯ４） ｅ （Ｆ、 （ｆ
ｆｌ＞ ２ ／Ｓ ｂ蛍光体を各々７０：１５：１５の
割合で混合する。この混合蛍光体の発光ピーク値は４５
１ｎｍで半値巾は短波長側へのふくらみで３ｏｍ増大し
た。これに波長５４３ｎｍの（Ｌａ、Ｃｅ、Ｔｂ）２０
３ ・ ０．９Ｐ２０５０．２Ｓ ｉ ０２緑色蛍光体
、波長６１１ｎｍのＹ２Ｏ３／ＥＬＪ赤色蛍光体を混合
し、実施例１と同様方法にて３０Ｗ円型蛍光ランプを製
作した。Ca)1o (PO4>a(ff12/Eu phosphor,
Sr2 P207/Eu phosphor with a wavelength of 420 nm, Ca10 (PO4) e (F, (f
fl> 2 /S b phosphors are mixed in a ratio of 70:15:15, respectively. The emission peak value of this mixed phosphor is 45
At 1 nm, the half-width increased by 3 om due to the bulge toward the short wavelength side. To this, (La, Ce, Tb) 20 with a wavelength of 543 nm
3. A 30W circular fluorescent lamp was manufactured in the same manner as in Example 1 by mixing a 0.9P2050.2S i 02 green phosphor and a Y2O3/ELJ red phosphor with a wavelength of 611 nm.
一方、Ｓｒ２ Ｐ２０７／ＥＬＪ、Ｃａ１０ （ＰＯ４
）ａ （Ｆ、（Ｎ）ｚ ／Ｓｂの雨量光体を用いずに製
作した円型蛍光ランプを比較量とした。On the other hand, Sr2 P207/ELJ, Ca10 (PO4
) a (F, (N) z /Sb) A circular fluorescent lamp manufactured without using a rain light body was used as a comparison.
その結果３種の青色蛍光体混合タイプは単一の青色蛍光
体の場合に比べてランプ光束で−０，５％、平均演色評
価数０．２ポイント、発光色の色度値変化は約１７５に
低減された。As a result, compared to the case of a single blue phosphor, the three types of blue phosphor mixed type had a lamp luminous flux of -0.5%, an average color rendering index of 0.2 points, and a chromaticity value change of the emitted color of about 175. reduced to
以上の結果を第１表に示した。The above results are shown in Table 1.
（以下余白）
なお、実施例に示したちの以外の緑色、赤色発光蛍光体
を組合せて用いた場合においても、青色発光蛍光体の劣
化が他の緑色、赤色発光蛍光体の劣化より大きい場合で
あれば、本発明が適用できることはいうまでもない。(Left below) Note that even when green and red emitting phosphors other than those shown in the examples are used in combination, the deterioration of the blue emitting phosphor may be greater than the deterioration of the other green and red emitting phosphors. It goes without saying that the present invention can be applied if there is such a case.
ざらに、上述した蛍光体からなる蛍光膜を億えま
た蛍光ランプの例を第４図に示す。蛍光ランプは図に示
すように、バルブω内面に被着された蛍光膜を幅え、ざ
らにバルブω内に所定圧の放電用ガスを封入してなり、
バルブ０）の両端部に取付けられた電極■に所定電圧を
印加し、励起源によって蛍光膜■が発光するものである
。Briefly, an example of a fluorescent lamp with a fluorescent film made of the above-mentioned fluorescent material is shown in FIG. As shown in the figure, a fluorescent lamp consists of a wide fluorescent film coated on the inner surface of a bulb ω, and a discharge gas of a predetermined pressure is roughly sealed inside the bulb ω.
A predetermined voltage is applied to the electrodes (2) attached to both ends of the bulb (0), and the fluorescent film (2) emits light due to the excitation source.
（発明の効果）
本発明によれば、蛍光ランプにおける光束低下を生ずる
ことなく、色度変化を防止することができる。(Effects of the Invention) According to the present invention, changes in chromaticity can be prevented without causing a decrease in luminous flux in a fluorescent lamp.
Claims (1)
＿２Ｐ＿２Ｏ＿７／Ｅｕで表わされる青色蛍光体と、４
４０〜４６０ｎｍに発光ピークを有する青色蛍光体と、 ４８０ｎｍに発光ピークを有する一般式 Ｃａ＿１＿０（ＰＯ＿４）＿６（Ｆ，Ｃｌ）＿２／Ｓｂ
で表わされる青色蛍光体の３種の蛍光体を組合せた青色
蛍光体に５３０〜５５０ｎｍに発光ピークを有する緑色
蛍光体と、 ６００〜６２０ｎｍに発光ピークを有する赤色蛍光体と
を組合せた蛍光体からなる蛍光膜を被着形成したことを
特徴とする蛍光ランプ。[Claims] General formula Sr having an emission peak at 410 to 430 nm
A blue phosphor represented by _2P_2O_7/Eu, and 4
A blue phosphor with an emission peak at 40-460 nm and a general formula Ca_1_0(PO_4)_6(F,Cl)_2/Sb with an emission peak at 480 nm.
From a phosphor that is a combination of three types of blue phosphors represented by a blue phosphor, a green phosphor that has an emission peak at 530-550 nm, and a red phosphor that has an emission peak at 600-620 nm. A fluorescent lamp characterized by having a fluorescent film deposited thereon.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27073288A JPH02120389A (en) | 1988-10-28 | 1988-10-28 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27073288A JPH02120389A (en) | 1988-10-28 | 1988-10-28 | Fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02120389A true JPH02120389A (en) | 1990-05-08 |
Family
ID=17490190
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27073288A Pending JPH02120389A (en) | 1988-10-28 | 1988-10-28 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02120389A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6762548B2 (en) * | 2000-09-05 | 2004-07-13 | Koninklijke Philips Electronics N.V. | Color picture screen with blue phosphor layer |
-
1988
- 1988-10-28 JP JP27073288A patent/JPH02120389A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6762548B2 (en) * | 2000-09-05 | 2004-07-13 | Koninklijke Philips Electronics N.V. | Color picture screen with blue phosphor layer |
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