JPH079791B2 - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPH079791B2 JPH079791B2 JP20222886A JP20222886A JPH079791B2 JP H079791 B2 JPH079791 B2 JP H079791B2 JP 20222886 A JP20222886 A JP 20222886A JP 20222886 A JP20222886 A JP 20222886A JP H079791 B2 JPH079791 B2 JP H079791B2
- Authority
- JP
- Japan
- Prior art keywords
- oxide coating
- luminous flux
- coating
- fluorescent lamp
- cerium oxide
- 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.)
- Expired - Lifetime
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 産業上の利用分野 本発明は蛍光ランプに関するものである。TECHNICAL FIELD The present invention relates to a fluorescent lamp.
従来の技術 従来、蛍光ランプにおいて、光束維持率を向上する目的
や、ランプから放射された紫外線による絵画，古美術品
等の退色，劣化を防止する目的で、ガラスバルブ内面と
蛍光体被膜との間に、酸化チタンやアルミナ等の酸化物
被膜を形成したものが知られている。2. Description of the Related Art Conventionally, in fluorescent lamps, in order to improve the luminous flux maintenance rate and prevent fading and deterioration of paintings, antiques, etc. due to the ultraviolet rays emitted from the lamp, the inner surface of the glass bulb and the phosphor coating are It is known that an oxide film such as titanium oxide or alumina is formed in between.
かかる酸化物被膜は、蛍光体被膜を通過してきた紫外線
を反射させて蛍光体被膜に戻すことにより発光に寄与さ
せるとともに、ガラスバルブへの紫外線の到達を抑制す
ることによりガラスの黒化を防ぐものである。Such an oxide coating reflects ultraviolet rays that have passed through the phosphor coating and returns them to the phosphor coating to contribute to light emission, and also prevents ultraviolet light from reaching the glass bulb to prevent blackening of the glass. Is.
発明が解決しようとする問題点 しかし、このような従来の蛍光ランプでは、被膜の表面
反射により紫外線反射率を高めた一部アルミナに代表さ
れる酸化物被膜は総じて表面状態が粗く可視光透過率を
低下させるという問題点があり、一方薄膜干渉作用で紫
外線反射率を向上させる目的の透明な酸化チタン被膜は
その高い紫外線吸収性のために十分に光束の向上に寄与
させることはできないという問題点があった。However, in such a conventional fluorescent lamp, the oxide film typified by a part of alumina in which the ultraviolet reflectance is increased by the surface reflection of the coating has a rough surface state and a visible light transmittance as a whole. On the other hand, a transparent titanium oxide film for the purpose of improving the ultraviolet reflectance by a thin film interference action cannot sufficiently contribute to the improvement of the luminous flux due to its high ultraviolet absorption. was there.
本発明はこのような問題点を解決するためになされたも
ので、酸化チタンほど紫外線吸収性の大きくない酸化セ
リウムを透明で平滑な被膜としてその厚さを最適に維持
することにより紫外線反射率を高め、初光束を大幅に向
上させるとともに光束維持率を改善した蛍光ランプを提
供するものである。The present invention has been made in order to solve such a problem, and the ultraviolet reflectance is improved by maintaining the thickness of cerium oxide, which is not so large in ultraviolet absorption as titanium oxide, as a transparent and smooth film to maintain its optimum thickness. (EN) Provided is a fluorescent lamp which has a high luminous flux, an improved initial luminous flux, and an improved luminous flux maintenance factor.
問題点を解決するための手段 この問題点を解決するために本発明は、ガラスバルブ内
面に透明な酸化セリウム被膜を付着量５〜200μg/cm2の
範囲で形成し、前記酸化セリウム被膜上に蛍光体被膜を
形成して蛍光ランプとしたものである。Means for Solving the Problems In order to solve this problem, the present invention forms a transparent cerium oxide coating on the inner surface of a glass bulb in an amount of 5 to 200 μg / cm 2 attached, and deposits the transparent cerium oxide coating on the cerium oxide coating. A fluorescent lamp is formed by forming a phosphor coating.
作用 この構成により、蛍光体被膜を通過した紫外線は、ガラ
スバルブ上の透明な酸化セリウム被膜に到達して、一部
は効率良く反射されて発光に寄与し、また一部は同被膜
に吸収されて紫外線のガラスバルブへの到達が抑制され
る。その結果、蛍光ランプの初光束が大幅に向上し光束
維持率も改善されることとなる。Function With this configuration, the ultraviolet light that has passed through the phosphor coating reaches the transparent cerium oxide coating on the glass bulb, is partly reflected and contributes to light emission, and part is absorbed by the coating. As a result, ultraviolet rays are prevented from reaching the glass bulb. As a result, the initial luminous flux of the fluorescent lamp is significantly improved, and the luminous flux maintenance factor is also improved.
なお、同被膜の付着量が５μg/cm2未満では高い紫外線
反射率を得ることはできなくなり、また紫外線吸収性も
小さくなるために紫外線のガラスバルブへの到達を抑制
することはできなくなる。一方、付着量が200μg/cm2を
越えると、紫外線吸収性が大きくなってやはり高い紫外
線反射率を得ることはできなくなり、また可視光透過率
も低下するために光束の低下をまねく。If the coating amount is less than 5 μg / cm 2 , it is impossible to obtain a high ultraviolet reflectance, and the ultraviolet absorptivity is also reduced, so that it is impossible to prevent the ultraviolet rays from reaching the glass bulb. On the other hand, when the amount of adhesion exceeds 200 μg / cm 2 , the ultraviolet absorptivity becomes so high that a high ultraviolet reflectance cannot be obtained, and the visible light transmittance also decreases, leading to a decrease in the luminous flux.
実施例 以下、本発明の実施例について図面を用いて説明する。Embodiments Embodiments of the present invention will be described below with reference to the drawings.
まず、平板石英ガラス上に約20μg/cm2付着させた酸化
セリウム被膜と酸化チタン被膜の透過率を第３図に示
す。図中、曲線６は基体石英ガラスの透過率、曲線７は
酸化セリウム付着ガラスの透過率、曲線８は酸化チタン
付着ガラスの透過率を示す。この図から明らかなよう
に、酸化セリウム被膜の方が酸化チタン被膜より紫外線
透過率の高いことがわかる。First, FIG. 3 shows the transmittances of the cerium oxide coating and the titanium oxide coating deposited on the flat quartz glass at about 20 μg / cm 2 . In the figure, a curve 6 shows the transmittance of the substrate quartz glass, a curve 7 shows the transmittance of the cerium oxide-adhered glass, and a curve 8 shows the transmittance of the titanium oxide-adhered glass. As is clear from this figure, it is understood that the cerium oxide coating has a higher ultraviolet transmittance than the titanium oxide coating.
一方、裏面をフロストした平板ソーダ石灰ガラス上に約
20μg/cm2付着させた酸化セリウム被膜と酸化チタン被
膜の基体ガラスに対する相対分光反射率を第４図に示
す。図中、曲線９は酸化セリウム被膜の相対分光反射
率、曲線10は酸化チタン被膜の相対分光反射率を示す。
この図から明らかなように、酸化セリウム被膜の方が酸
化チタン被膜よりも高い紫外線反射率を示すことがわか
る。On the other hand, on the flat plate soda lime glass with the back side frosted
FIG. 4 shows the relative spectral reflectances of the cerium oxide coating and the titanium oxide coating with 20 μg / cm 2 deposited on the base glass. In the figure, curve 9 shows the relative spectral reflectance of the cerium oxide coating, and curve 10 shows the relative spectral reflectance of the titanium oxide coating.
As is clear from this figure, it is understood that the cerium oxide coating has a higher ultraviolet reflectance than the titanium oxide coating.
これらの結果をもとに、酸化セリウム被膜を蛍光ランプ
に適用し評価した。Based on these results, the cerium oxide coating was applied to a fluorescent lamp and evaluated.
アセチルアセトンのセリウム錯体のエチルアルコール溶
液を出発原料とし、あらかじめ洗浄しておいた内径15mm
のガラスバルブ内面に付着量を種々変えて塗布し、120
℃で５分間乾燥した。さらに550℃で10分間加熱焼成し
て平滑な透明酸化セリウム被膜を形成した。そして、同
被膜上に、色温度5000Kの３波長形希土類蛍光体（BaMgA
l16O27:Eu2+,LaPo4:Ce3+,Tb3+,Y2O3:Eu3+）を1.4g塗布
し乾燥し焼成した後、通常の方法で第５図に示すような
ブリッジ接続を２箇所有する27ワット形蛍光ランプを作
製し試験した。Pre-washed inner diameter of 15 mm with ethyl alcohol solution of cerium complex of acetylacetone as starting material
Apply various amounts of coating on the inner surface of the glass bulb of
Dry at 5 ° C for 5 minutes. Further, it was heated and baked at 550 ° C. for 10 minutes to form a smooth transparent cerium oxide film. Then, a three-wavelength type rare earth phosphor (BaMgA) having a color temperature of 5000K is formed on the same film.
l 16 O 27 : Eu 2+ , LaPo 4 : Ce 3+ , Tb 3+ , Y 2 O 3 : Eu 3+ ) 1.4 g was applied, dried and baked, then as shown in FIG. A 27 watt type fluorescent lamp having two different bridge connections was manufactured and tested.
第５図において、11〜14はガラスバルブを示し、ガラス
バルブ11,12の一端部に電極（図示せず）が設けられて
いる。15は第１ブリッジ、16は第２ブリッジ、17は口金
を示す。In FIG. 5, reference numerals 11 to 14 denote glass bulbs, and electrodes (not shown) are provided at one end of the glass bulbs 11 and 12. Reference numeral 15 is a first bridge, 16 is a second bridge, and 17 is a base.
また、同時に透明な酸化セリウム被膜の代わりに同種出
発原料からなる透明な酸化チタン被膜を適用した蛍光ラ
ンプを同様に作製し試験した。At the same time, instead of the transparent cerium oxide coating, a fluorescent lamp in which a transparent titanium oxide coating made of the same starting material was applied was similarly prepared and tested.
これら蛍光ランプの100時間点灯後の光束値を第１図に
示す。図中、曲線１は本発明にかかる酸化セリウム被膜
を有する蛍光ランプのランプ光束を、曲線２は従来の酸
化チタン被膜を有する蛍光ランプのランプ光束を示す。
この図から明らかなように、本発明にかかる蛍光ランプ
は付着量５〜200μg/cm2の範囲で、酸化チタン被膜適用
のランプによって得られる光束レベルと同等以上の光束
が得られ、とくに付着量20μg/cm2前後でその効果は顕
著に認められ、本発明にかかる蛍光ランプの100時間光
束は従来の蛍光ランプに比べて4.4％向上した。FIG. 1 shows the luminous flux values of these fluorescent lamps after 100 hours of lighting. In the figure, curve 1 shows the luminous flux of the fluorescent lamp having the cerium oxide coating according to the present invention, and curve 2 shows the luminous flux of the fluorescent lamp having the conventional titanium oxide coating.
As is clear from this figure, in the fluorescent lamp according to the present invention, a luminous flux equal to or higher than the luminous flux level obtained by the lamp to which the titanium oxide coating is applied can be obtained in the deposition amount range of 5 to 200 μg / cm 2 , and the deposition amount is particularly high. The effect was remarkably recognized at around 20 μg / cm 2, and the 100-hour luminous flux of the fluorescent lamp according to the present invention was improved by 4.4% as compared with the conventional fluorescent lamp.
また、付着量約20μg/cm2の透明な酸化セリウム被膜を
有する蛍光ランプと、同一付着量の透明な酸化チタン被
膜を有する蛍光ランプとのほかに、酸化物被膜を有しな
い蛍光ランプを加えた三種類の蛍光ランプの1000時間点
灯後の光束維持率を第２図に示す。図中、曲線３は本発
明にかかる酸化セリウム被膜を有するランプの光束維持
率、曲線４は従来の酸化チタン被膜を有するランプの光
束維持率、曲線５は酸化物被膜を有しないランプの光束
維持率を示す。この図から明らかなように、酸化セリウ
ム被膜および酸化チタン被膜を有するランプの1000時間
光束維持率はそれぞれ92％および90％と酸化物被膜を有
しないランプの光束維持率を大幅に上回り、なお光束維
持率でも酸化セリウム被膜が酸化チタン被膜よりすぐれ
ていることがわかる。Further, in addition to a fluorescent lamp having a transparent cerium oxide coating with a coating amount of about 20 μg / cm 2 and a fluorescent lamp having a transparent titanium oxide coating with the same coating amount, a fluorescent lamp without an oxide coating was added. Fig. 2 shows the luminous flux maintenance factors of three types of fluorescent lamps after 1000 hours of lighting. In the drawing, curve 3 is the luminous flux maintenance factor of the lamp having the cerium oxide coating according to the present invention, curve 4 is the luminous flux maintenance factor of the lamp having the conventional titanium oxide coating, and curve 5 is the luminous flux maintenance factor of the lamp having no oxide coating. Indicates the rate. As is clear from this figure, the 1000 hour luminous flux maintenance rate of the lamps with cerium oxide coating and titanium oxide coating is 92% and 90%, respectively, which is significantly higher than the luminous flux maintenance rate of the lamp without oxide coating, and It can be seen that the cerium oxide film is superior to the titanium oxide film in terms of maintenance rate.
なお、この酸化セリウム付着量と100時間光束との関係
は、その他の蛍光ランプにおいても同様であり、酸化セ
リウム５〜200μg/cm2の付着量範囲においてランプ光束
の改善を図ることが可能である。The relationship between the cerium oxide adhesion amount and the 100-hour luminous flux is the same for other fluorescent lamps, and it is possible to improve the lamp luminous flux in the adhesion amount range of cerium oxide 5 to 200 μg / cm 2. .
発明の効果 以上説明したように、本発明はガラスバルブ内面に透明
な酸化セリウム被膜を付着量５〜200μg/cm2の範囲で形
成し、その上に蛍光体被膜を形成することにより、初光
束を大幅に向上し光束維持率も改善し得るというすぐれ
た効果を有する蛍光ランプを提供することができるもの
である。As described above, the present invention forms a transparent cerium oxide coating on the inner surface of a glass bulb in the range of an amount of deposition of 5 to 200 μg / cm 2 , and forms a phosphor coating on it to form a first luminous flux. It is possible to provide a fluorescent lamp having an excellent effect that the luminous efficiency can be significantly improved and the luminous flux maintenance factor can be improved.
第１図は酸化セリウム被膜と酸化チタン被膜の付着量を
変えて蛍光ランプに適用したときの100時間点灯後のラ
ンプ光束を示す曲線図、第２図は酸化セリウム被膜適用
ランプ，酸化チタン被膜適用ランプおよび酸化物被膜非
適用のランプの光束維持率を示す曲線図、第３図は平板
石英ガラス上に付着した酸化セリウム被膜と酸化チタン
被膜の透過率を示す曲線図、第４図は裏面をフロストし
た平板ソーダ石灰ガラス上に付着した酸化セリウム被膜
と酸化チタン被膜の基体ガラスに対する相対分光反射率
を示す曲線図、第５図は本発明の一実施例である蛍光ラ
ンプの斜視図である。 11〜14……ガラスバルブ、17……口金。Fig. 1 is a curve diagram showing the luminous flux of the lamp after 100 hours of lighting when applied to a fluorescent lamp with different amounts of cerium oxide coating and titanium oxide coating applied, and Fig. 2 is a cerium oxide coating applied lamp and titanium oxide coating applied. Fig. 3 is a curve diagram showing the luminous flux maintenance factor of a lamp and a lamp to which an oxide film is not applied. Fig. 3 is a curve diagram showing the transmittance of a cerium oxide film and a titanium oxide film deposited on flat quartz glass. FIG. 5 is a curve diagram showing the relative spectral reflectance of the cerium oxide coating and titanium oxide coating on the frosted flat plate soda-lime glass with respect to the base glass, and FIG. 5 is a perspective view of a fluorescent lamp according to an embodiment of the present invention. 11 to 14 …… Glass bulb, 17 …… Base.
Claims (1)
膜を付着量５〜200μg/cm2の範囲で形成し、前記酸化セ
リウム被膜上に蛍光体被膜を形成したことを特徴とする
蛍光ランプ。1. A fluorescent lamp characterized in that a transparent cerium oxide coating is formed on the inner surface of a glass bulb in an amount of 5 to 200 μg / cm 2 deposited, and a phosphor coating is formed on the cerium oxide coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20222886A JPH079791B2 (en) | 1986-08-28 | 1986-08-28 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20222886A JPH079791B2 (en) | 1986-08-28 | 1986-08-28 | Fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6358756A JPS6358756A (en) | 1988-03-14 |
| JPH079791B2 true JPH079791B2 (en) | 1995-02-01 |
Family
ID=16454082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20222886A Expired - Lifetime JPH079791B2 (en) | 1986-08-28 | 1986-08-28 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH079791B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5506474A (en) * | 1995-03-31 | 1996-04-09 | General Electric Company | Compact fluorescent lamp using a light reflecting adhesive material |
-
1986
- 1986-08-28 JP JP20222886A patent/JPH079791B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6358756A (en) | 1988-03-14 |
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