JPS6326505B2 - - Google Patents
Info
- Publication number
- JPS6326505B2 JPS6326505B2 JP53075044A JP7504478A JPS6326505B2 JP S6326505 B2 JPS6326505 B2 JP S6326505B2 JP 53075044 A JP53075044 A JP 53075044A JP 7504478 A JP7504478 A JP 7504478A JP S6326505 B2 JPS6326505 B2 JP S6326505B2
- Authority
- JP
- Japan
- Prior art keywords
- phosphor
- lamp
- fluorescent lamp
- particle size
- brown spots
- 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
Links
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 25
- 239000002245 particle Substances 0.000 claims description 23
- 239000011521 glass Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- CMSGUKVDXXTJDQ-UHFFFAOYSA-N 4-(2-naphthalen-1-ylethylamino)-4-oxobutanoic acid Chemical compound C1=CC=C2C(CCNC(=O)CCC(=O)O)=CC=CC2=C1 CMSGUKVDXXTJDQ-UHFFFAOYSA-N 0.000 description 6
- 239000012528 membrane Substances 0.000 description 6
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 6
- 229910052753 mercury Inorganic materials 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- FAPDDOBMIUGHIN-UHFFFAOYSA-K antimony trichloride Chemical compound Cl[Sb](Cl)Cl FAPDDOBMIUGHIN-UHFFFAOYSA-K 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 235000019441 ethanol Nutrition 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】
本発明は、硝子管内面に起動補助物質としての
透明導電性被膜を形成した螢光ランプに関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a fluorescent lamp in which a transparent conductive coating as a starting aid is formed on the inner surface of a glass tube.
この種の螢光ランプは、起動特性が優れている
と云う利点を有する反面、長期間点灯中において
管内面に黒褐色の斑点を生じ、ランプ外観品質を
損うだけでなく光束維持率が悪化するという欠点
を有していた。 Although this type of fluorescent lamp has the advantage of excellent starting characteristics, it produces blackish brown spots on the inner surface of the tube when it is lit for a long period of time, which not only impairs the lamp appearance quality but also deteriorates the luminous flux maintenance rate. It had the following drawback.
本発明は、長時間点灯後も黒褐色斑点を生じる
ことのない螢光ランプを得ることを目的とする。 An object of the present invention is to obtain a fluorescent lamp that does not produce dark brown spots even after being lit for a long time.
この種の螢光ランプは、第１図および第２図に
示す如く、硝子管１の内面にほぼ全長にわたり酸
化スズまたは酸化インジウムの透明導電性被膜２
（以下ネサ膜と称す）を形成し、その上より螢光
体３を塗布してあり、また管両端には電極４，
４′を備えると共に管内に数Torrの稀ガスと水銀
を封入してある。 As shown in FIGS. 1 and 2, this type of fluorescent lamp has a transparent conductive coating 2 of tin oxide or indium oxide on the inner surface of a glass tube 1 over almost the entire length.
(hereinafter referred to as Nesa film) is formed, and a phosphor 3 is coated thereon, and electrodes 4 are placed on both ends of the tube.
4', and several Torr of rare gas and mercury are sealed inside the tube.
かかる構造を有する螢光ランプにおいては、ラ
ンプの再点弧時、すなわちランプ電流が零値から
次第に増加してランプ点灯に至る過程（電源周波
数の２倍で起る）での放電形成時において、ネサ
膜２上に塗布した螢光体３が、電極４，４′から
ネサ膜２に流れ込む起動補助電流であるイオンま
たは電子流衝撃により徐々に破壊されついに絶縁
破壊に至る結果、螢光体層が変色し、黒褐色の斑
点が発生することとなる。 In a fluorescent lamp having such a structure, when the lamp is re-ignited, that is, when a discharge is formed during the process in which the lamp current gradually increases from zero to lamp lighting (occurs at twice the power supply frequency), The phosphor 3 coated on the NESA film 2 is gradually destroyed by the bombardment of ions or electron current, which is a starting auxiliary current, flowing into the NESA film 2 from the electrodes 4, 4', and finally dielectric breakdown occurs. will change color and develop black-brown spots.
本発明者らは、この黒褐色の斑点の発生を抑制
する方策について検討を行つた結果、ネサ膜上に
塗布する螢光物質、特にその粒径および粒度分布
がその発生の抑制に対して著しい影響を有してい
ることを見い出した。 The present inventors investigated measures to suppress the occurrence of blackish brown spots and found that the fluorescent substance applied to the NESA film, especially its particle size and particle size distribution, had a significant effect on suppressing the occurrence. It was found that it has
本発明者らは、螢光体の平均粒径およびその粒
度分布を種々変化させた螢光ランプを多数製作
し、5000時間点灯後の黒褐色の斑点の発生状況を
調査した。 The present inventors manufactured a large number of fluorescent lamps in which the average particle size and particle size distribution of the phosphors were varied, and investigated the occurrence of dark brown spots after lighting for 5000 hours.
その結果を第３図ａ〜ｃに示す。 The results are shown in Figures 3a-c.
ここで、粒度分布は、沈降法により平均粒径
（半径）をとして±２（μ）以内に存在する螢
光体粒子の割合を％表示した。 Here, the particle size distribution is expressed as a percentage of the phosphor particles existing within ±2 (μ) based on the average particle diameter (radius) determined by the sedimentation method.
第３図ａは、完成ランプのネサ膜抵抗値（ラン
プ両端部の10cmを除く中央部の全抵抗値）Ｒを
20KΩ、単位容積当りの水銀封入量ｈを3.11×
10-2mg／cm3としたものにおける螢光体平均粒径
（半径）を横軸に、±２（μ）の範囲内に存在す
る粒子半径を有する螢光体の全体に対する割合ｙ
（螢光体粒度分布と表示）（％）を縦軸にとり、黒
褐色斑点の発生状況を示し、第３図ｂはＲ＝
100KΩ、ｈ＝3.11×10-2、第３図ｃは、Ｒ＝
100KΩ、ｈ＝2.07×10-2mg／cm3という条件で、第
３図ａと同様に実験した結果を示す。 Figure 3a shows the Nesa membrane resistance value (total resistance value in the center excluding 10 cm at both ends of the lamp) R of the completed lamp.
20KΩ, mercury filling amount h per unit volume is 3.11×
The horizontal axis is the average particle diameter (radius) of the phosphor based on 10 -2 mg/cm 3 , and the proportion of phosphors with a particle radius within the range of ±2 (μ) to the total y
(Displayed as phosphor particle size distribution) (%) is plotted on the vertical axis to show the occurrence of dark brown spots, and Figure 3b shows R=
100KΩ, h=3.11×10 -2 , Figure 3c shows R=
The results of an experiment conducted in the same manner as in Figure 3a are shown under the conditions of 100KΩ and h=2.07×10 -2 mg/cm 3 .
これらの図中で、〇印は黒褐色斑点が全く発生
していないか、ほとんど認められないもの、△印
は異褐色斑点の発生が若干認められるもの、およ
び×印は黒褐色斑点が強度に発生しているものを
意味する。 In these figures, ○ indicates that no or very few blackish brown spots are observed, △ indicates that some abnormal brown spots are observed, and × indicates that blackish brown spots occur strongly. means something that is.
第３図ａ〜ｃに示された実験結果よりわかるよ
うに、ネサ膜抵抗値、封入水銀量等の他条件によ
り、多少結果は異なるが、ネサ膜抵抗値が小さく
ても、また封入水銀量が多くても、被着する螢光
体の平均粒径とその粒度分布との関係が（4.5、
95、4.5、85、5.5、65、10、60）の４点をとおる
一次曲線よりもｘ、ｙが大なる範囲にあるよう
に、ｘ、ｙを選ぶことにより、黒褐色斑点の発生
がほとんどない螢光ランプが得られる。 As can be seen from the experimental results shown in Figures 3 a to c, the results differ somewhat depending on other conditions such as the NESA membrane resistance value and the amount of mercury enclosed, but even if the NESA membrane resistance value is small, the amount of mercury enclosed Even if there is a large number of
95, 4.5, 85, 5.5, 65, 10, 60) By selecting x and y so that they are within a larger range than the linear curve passing through the four points, there is almost no occurrence of dark brown spots. A fluorescent lamp is obtained.
なお、実用上は螢光体の膜厚は３〜５mg／cm2、
ネサ膜抵抗値は20KΩ以上、封入水銀量は35mg以
下が適当である。 In addition, in practice, the film thickness of the phosphor is 3 to 5 mg/cm 2 ,
Appropriately, the resistance value of the NESA membrane is 20KΩ or more, and the amount of mercury enclosed is 35mg or less.
第４図は本発明の蛍光ランプにおける蛍光体
（第３図ａの点）と従来の蛍光ランプにおける
蛍光体（第３図ａの点Ｐ）とを比較して示す粒径
分布図である。第４図において、実線は本発明ラ
ンプの蛍光体を、破線は従来ランプの蛍光体をそ
れぞれ示している。第４図からわかるように、本
発明の蛍光ランプにおける蛍光体の粒径分布は従
来の蛍光ランプにおける蛍光体のそれに比してシ
ヤープになつている点が特徴である。なお、第３
図ａの点（すなわち＝7.0μ、蛍光体粒度分布
70.0％）の場合、第４図に実線で示すように、
±２＝（−２）〜（＋２）＝5.0〜9.0μの範囲
内に存在する蛍光体粒子は蛍光体全体に対し70.0
％である。一方、第３図ａの点Ｐ（すなわち＝
7.0μ、蛍光体粒度分布54.1％）の場合、第４図に
破線で示すように、±２＝（−２）〜（＋
２）＝5.0〜9.0μの範囲内に存在する蛍光体粒子は
蛍光体全体に対し54.1％である。 FIG. 4 is a particle size distribution diagram showing a comparison between the phosphor in the fluorescent lamp of the present invention (point in FIG. 3 a) and the phosphor in a conventional fluorescent lamp (point P in FIG. 3 a). In FIG. 4, the solid line indicates the phosphor of the lamp of the present invention, and the broken line indicates the phosphor of the conventional lamp. As can be seen from FIG. 4, the fluorescent lamp of the present invention is characterized in that the particle size distribution of the phosphor is sharper than that of the phosphor in conventional fluorescent lamps. In addition, the third
Point in figure a (i.e. = 7.0μ, phosphor particle size distribution
70.0%), as shown by the solid line in Figure 4,
The phosphor particles existing within the range of ±2 = (-2) to (+2) = 5.0 to 9.0μ are 70.0μ to the entire phosphor.
%. On the other hand, point P in Figure 3a (i.e. =
7.0μ, phosphor particle size distribution 54.1%), ±2 = (-2) to (+
2) The phosphor particles existing within the range of 5.0 to 9.0 μ account for 54.1% of the total phosphor.
また、、ｙの上限値について、ｙの上限値は
100である。の上限値について、あまりに大き
い粒径の蛍光体は結晶が成長しないため作れず、
したがつての上限値は自ずと制約を受ける。
の上限値はこのような制約から10.5である。 Also, regarding the upper limit of y, the upper limit of y is
It is 100. Regarding the upper limit of
Therefore, the upper limit value is naturally subject to restrictions.
The upper limit of is 10.5 due to these constraints.
次に、本発明の実施例について説明する。 Next, examples of the present invention will be described.
四塩化錫をエチルアルコールに溶解させ、少量
の塩酸または塩化アンチモンを添加した溶液を噴
霧すると共に約400℃に加熱する。この蒸気を約
560℃に加熱した外径約32mm、長さ約1200mmの硝
子管内に導入してこの管内面にネサ膜を形成す
る。 Tin tetrachloride is dissolved in ethyl alcohol, a small amount of hydrochloric acid or antimony chloride is added, and a solution is sprayed and heated to about 400°C. This steam is approx.
It is introduced into a glass tube with an outer diameter of about 32 mm and a length of about 1200 mm heated to 560°C to form a Nesa membrane on the inner surface of the tube.
このネサ膜の形成された硝子管を蒸留水にて洗
浄、乾燥後、平均粒子半径7μでかつ粒子半径が
５〜9μに入る粒子が80％を占める白色螢光体を
約5gr塗布した後、管両端に電極を封着させる等
の通常の製造方法にて40Wラピツドスタート形螢
光ランプを完成させた。 After washing the glass tube with the Nesa film formed thereon with distilled water and drying it, approximately 5 gr of white phosphor with an average particle radius of 7 μm and 80% of the particles having a particle radius of 5 to 9 μm was applied. A 40W rapid-start type fluorescent lamp was completed using standard manufacturing methods such as sealing electrodes at both ends of the tube.
なお、完成ランプのネサ膜抵抗値は30KΩであ
つた。 Note that the Nesa film resistance value of the completed lamp was 30KΩ.
この螢光ランプについて点灯試験したところ、
ランプの寿命末期まで黒褐色斑点は全く発生しな
かつた。 When we conducted a lighting test on this fluorescent lamp, we found that
No dark brown spots appeared until the end of the lamp's life.
また、完成ランプのネサ膜抵抗値が20KΩとし
たときも、上記実施例のごとき螢光体を塗布すれ
ば、黒褐色斑点は発生しなかつた。本発明の範囲
の粒子径を有する螢光体を用いることにより、ネ
サ膜抵抗値が小さなものでも、黒褐色斑点を抑制
することができるのである。 Further, even when the finished lamp had a Nesa membrane resistance value of 20 KΩ, no dark brown spots were generated when the phosphor of the above example was applied. By using a phosphor having a particle size within the range of the present invention, it is possible to suppress dark brown spots even when the resistance value of the NES film is small.
第１図は螢光ランプの断面図、第２図は同じく
一部切欠断面図、第３図ａ〜ｃは同ランプの黒褐
色斑点発生状況を示す図、第４図は本発明の蛍光
ランプにおける蛍光体と従来の蛍光ランプにおけ
る蛍光体とを比較して示す粒径分布図である。
１……硝子管、２……透明導電性被膜、３……
螢光体、４，４′……電極、５……水銀。
Fig. 1 is a sectional view of the fluorescent lamp, Fig. 2 is a partially cutaway sectional view, Fig. 3 a to c are views showing the appearance of dark brown spots in the same lamp, and Fig. 4 is a sectional view of the fluorescent lamp of the present invention. FIG. 2 is a particle size distribution diagram showing a comparison between a phosphor and a phosphor in a conventional fluorescent lamp. 1...Glass tube, 2...Transparent conductive coating, 3...
Fluorescent material, 4,4'...electrode, 5...mercury.
Claims (1)
明導電性被膜上に蛍光体を被着してなる蛍光ラン
プにおいて、前記蛍光体の平均粒子半径（μ）
を横軸に、±２（μ）の範囲内に存在する粒子
半径を有する蛍光体の全体に対する割合ｙ（％）
を縦軸にとつたとき、4.5≦≦10.5、ｙ≧−20
ｘ＋175、ｙ≧−10／９＋640／９、ｙ≦100を満足す る領域内に、ｙがあることを特徴とする蛍光ラ
ンプ。[Scope of Claims] 1. A fluorescent lamp in which a transparent conductive coating is provided on the inner surface of a glass tube, and a phosphor is coated on the transparent conductive coating, wherein the average particle radius (μ) of the phosphor is
The horizontal axis is the proportion y (%) of phosphors with a particle radius within the range of ±2 (μ) to the whole.
When taken on the vertical axis, 4.5≦≦10.5, y≧−20
A fluorescent lamp characterized in that y is within a region satisfying x+175, y≧-10/9+640/9, and y≦100.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7504478A JPS551057A (en) | 1978-06-20 | 1978-06-20 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7504478A JPS551057A (en) | 1978-06-20 | 1978-06-20 | Fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS551057A JPS551057A (en) | 1980-01-07 |
| JPS6326505B2 true JPS6326505B2 (en) | 1988-05-30 |
Family
ID=13564806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7504478A Granted JPS551057A (en) | 1978-06-20 | 1978-06-20 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS551057A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0489721U (en) * | 1990-12-10 | 1992-08-05 | ||
| JPH0528182Y2 (en) * | 1988-07-02 | 1993-07-20 |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS553114A (en) * | 1978-06-20 | 1980-01-10 | Matsushita Electronics Corp | Fluorescent lamp |
| US5512798A (en) * | 1993-09-30 | 1996-04-30 | Toshiba Lighting & Technology Corporation | Low-pressure mercury vapor discharge lamp and illuminating apparatus utilizing same |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032959A (en) * | 1973-07-23 | 1975-03-29 |
-
1978
- 1978-06-20 JP JP7504478A patent/JPS551057A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5032959A (en) * | 1973-07-23 | 1975-03-29 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0528182Y2 (en) * | 1988-07-02 | 1993-07-20 | ||
| JPH0489721U (en) * | 1990-12-10 | 1992-08-05 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS551057A (en) | 1980-01-07 |
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