JPH0612652B2 - Manufacturing method of ring-shaped fluorescent lamp - Google Patents
Manufacturing method of ring-shaped fluorescent lampInfo
- Publication number
- JPH0612652B2 JPH0612652B2 JP24812684A JP24812684A JPH0612652B2 JP H0612652 B2 JPH0612652 B2 JP H0612652B2 JP 24812684 A JP24812684 A JP 24812684A JP 24812684 A JP24812684 A JP 24812684A JP H0612652 B2 JPH0612652 B2 JP H0612652B2
- Authority
- JP
- Japan
- Prior art keywords
- alumina
- fluorescent lamp
- ring
- shaped fluorescent
- luminous flux
- 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
- Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 〔発明の利用分野〕 本発明は環形蛍光ランプの製造方法の改良に係り、特
に、金属酸化物膜を有する環形蛍光ランプの光束、光束
維持率の向上に関するものである。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement in a method for manufacturing a ring-shaped fluorescent lamp, and more particularly to improvement in luminous flux and luminous flux maintenance factor of a ring-shaped fluorescent lamp having a metal oxide film. .
蛍光ランプにおいて、ガラス管と蛍光体膜との間にアル
ミナ膜等を形成して光束維持率を改善することが従来か
ら行なわれている。また、アルミナ膜等を適当な厚さに
すれば光束も数％向上することも知られている。In a fluorescent lamp, it has been conventionally practiced to form an alumina film or the like between a glass tube and a phosphor film to improve the luminous flux maintenance factor. It is also known that the luminous flux can be improved by several percent if the alumina film or the like has an appropriate thickness.
通常、特開昭５７−４４９５９号公報あるいは特公昭３
８−１０５９４号公報に記載のように、粒径が２０nmの
程度のγ−アルミナを水またはニトロセルロースの酢酸
ブチル溶液に懸濁分散させて塗布液を作り、これをガラ
ス管内面に塗布してアルミナ層を形成していた。この方
法では、アルミナ被着量を２×１０−２mg／cm2以上に
厚く塗布すると管曲げ工程で曲げることができないと言
う不都合が生じる。従って、１×１０−２mg／cm2程度
の厚さに塗布されていたが、これではアルミナの被着量
が過少であるため光束を上げることはできない。Usually, JP-A-57-44959 or JP-B-3
As described in JP-A-8-10594, γ-alumina having a particle size of about 20 nm is suspended and dispersed in water or a butyl acetate solution of nitrocellulose to prepare a coating solution, which is coated on the inner surface of a glass tube. An alumina layer was formed. In this method, if the alumina coating amount is thickly applied to 2 × 10 −2 mg / cm 2 or more, there arises a disadvantage that bending cannot be performed in the tube bending process. Therefore, it was applied to a thickness of about 1 × 10 −2 mg / cm 2 , but this cannot raise the luminous flux because the amount of alumina deposited is too small.
したがって、本発明の目的は光束，光束維持率ともに向
上させ得る環形蛍光ランプの製造方法を提供することに
なる。Therefore, an object of the present invention is to provide a method for manufacturing a ring-shaped fluorescent lamp capable of improving both the luminous flux and the luminous flux maintenance factor.
本発明の要旨は、ポリエチレンオキサイドを溶解した水
溶液にγ−アルミナを懸濁分散したアルミナ塗布液をア
ルミナ膜の実着量が０．０２mg／cm2〜０．１mg／cm2と
なるように蛍光ランプ用の直管状のガラス管内面に塗布
することにより前記ガラス管内面にアルミナ膜を形成
し、 次いで、前記アルミナ膜上に蛍光体膜を形成し、 次いで、環形蛍光ランプを製造するために前記直管状の
ガラス管の管曲げを行なうことを特徴とする環形蛍光ラ
ンプの製造方法にある。The gist of the present invention is to make an alumina coating liquid in which γ-alumina is suspended and dispersed in an aqueous solution in which polyethylene oxide is dissolved so that the amount of the alumina film deposited is 0.02 mg / cm 2 to 0.1 mg / cm 2. An alumina film is formed on the inner surface of the glass tube by applying it to the inner surface of a straight tubular glass tube for a lamp, then a phosphor film is formed on the alumina film, and then the ring-shaped fluorescent lamp is manufactured by the method described above. A method of manufacturing a ring-shaped fluorescent lamp is characterized in that a straight glass tube is bent.
かかる特徴的な製造方法によって金属酸化物膜の被着量
を従来より多くしても管曲げができるようになり、その
上、光束も数％向上できるようになると言う優れた効果
が得られた。With such a characteristic manufacturing method, it is possible to bend the tube even if the deposition amount of the metal oxide film is larger than the conventional one, and further, it is possible to obtain an excellent effect that the luminous flux can be improved by several percent. .
以下、本発明を図を用いて詳述する。 Hereinafter, the present invention will be described in detail with reference to the drawings.
はじめに、本発明の原理について述べる。First, the principle of the present invention will be described.
従来、水またはニトロセルロースの酢酸ブチル溶液にア
ルミナ等の金属酸化物粉を分散しているが、この方法で
はアルミナ等の金属酸化物膜が非常に強固に形成される
ためにアルミナ等の金属酸化物被着量を増すと管曲げ時
に曲がらないということが種々の実験・検討の結果判明
した。そして、アルミナ等の金属酸化物膜の強さは分散
媒体によって影響をうけることが種々の分散媒体を検討
の結果わかり、従来の水に分散したものにポリエチレン
オキサイド（ＰＥＯ）のような水性バインダも添加する
のが膜強度を少し弱めて被着量を増大させるのに適当で
あることがわかった。そして、水性バインダの添加量や
金属酸化物の濃度を適当に組合せて目的の被着量にする
ことができる。Conventionally, metal oxide powder such as alumina is dispersed in butyl acetate solution of water or nitrocellulose. However, in this method, the metal oxide film such as alumina is formed very strongly, so that metal oxide such as alumina is oxidized. As a result of various experiments and investigations, it was found that bending of the pipe did not bend when the amount of material deposited increased. As a result of studying various dispersion media, the strength of the metal oxide film such as alumina is influenced by the dispersion media, and the conventional dispersion in water also includes an aqueous binder such as polyethylene oxide (PEO). It has been found that the addition is suitable for slightly weakening the film strength and increasing the amount of deposition. Then, the amount of the aqueous binder added and the concentration of the metal oxide can be appropriately combined to obtain the target amount of deposition.
次に、本発明の具体的実施例を説明する。Next, specific examples of the present invention will be described.
第１図は本発明の方法でつくった環形蛍光ランプ（ＦＣ
Ｌ３０／２８）の断面構成を示したもので、ガラス管１
の内面にアルミナの薄膜２を形成し、その上に蛍光体膜
３を塗布・形成したものである。環形蛍光ランプのガラ
ス管１は最初直線状で蛍光体層を形成し、電極部を封止
してから環形に成形する。本発明の蛍光ランプは次のよ
うな順に製造する。まず、ガラス管１の内面を水で洗浄
した後、その内面にアルミナ膜を塗布・形成する。アル
ミナの塗布液はポリエチレンオキサイドを0.05％〜0.5
％程度溶解した水溶液にγ−アルミナを0.5〜３％懸濁
分散させたもので、アルミナの実着量を0.02mg／cm2〜
0.1mg／cm2とする。アルミナの実着量が0.02mg／cm2よ
り少しないと光束の改善効果が少なくなるため、好まし
くなく、0.1mg／cm2より多くなると管曲げ工程で曲げに
くくなり、その上、光束や光束維持率も却って悪くなる
ため好ましくない。このようにして形成されたアルミナ
の薄膜の上に蛍光体膜が塗布・形成され、以降、通常の
環形蛍光ランプの製造工程を経て完成する。FIG. 1 shows a ring-shaped fluorescent lamp (FC
L30 / 28) shows the cross-sectional structure of the glass tube 1
A thin film 2 of alumina is formed on the inner surface of, and a phosphor film 3 is applied and formed thereon. The glass tube 1 of the ring-shaped fluorescent lamp is first linearly formed with a phosphor layer, and the electrode portion is sealed and then molded into a ring shape. The fluorescent lamp of the present invention is manufactured in the following order. First, the inner surface of the glass tube 1 is washed with water, and then an alumina film is applied and formed on the inner surface. The coating solution of alumina is 0.05% to 0.5% polyethylene oxide.
% -Γ-alumina suspended and dispersed in 0.5% to 3% aqueous solution. The actual amount of alumina deposited is 0.02 mg / cm 2
It is 0.1 mg / cm 2 . Since the actual wear amount of the alumina is less effect of improving the luminous flux not little more than 0.02 mg / cm 2, undesirably, it becomes more than 0.1 mg / cm 2 hardly bent tube bending process and, moreover, the luminous flux and the luminous flux maintenance The rate is rather bad, which is not preferable. A phosphor film is applied and formed on the alumina thin film thus formed, and thereafter, the phosphor film is completed through a normal manufacturing process of a ring-shaped fluorescent lamp.
次に本実施例の効果について説明する。Next, the effect of this embodiment will be described.
第２図はアルミナ被着量と初期（１００時間点灯後）の
光束との関係を示した図である。アルミナを被着してい
ないランプの光束を１００％として示している。この結
果から明らかなように、光束アップのためにはアルミナ
被着量が0.02mg／cm2〜0.1mg／cm2の範囲が最も良く、
被着していないランプより２〜３％高くできる。FIG. 2 is a diagram showing the relationship between the amount of deposited alumina and the initial (after 100 hours of lighting) luminous flux. The luminous flux of the lamp not coated with alumina is shown as 100%. As is clear from this result, in order to increase the luminous flux, the alumina deposition amount is best in the range of 0.02 mg / cm 2 to 0.1 mg / cm 2 ,
It can be 2-3% higher than an uncoated lamp.
また、第３図は光束維持率を示したもので、本発明によ
るランプは従来ランプに比べて２０００ｈ以降でも光束
維持率が３〜４％高くできる。FIG. 3 shows the luminous flux maintenance factor, and the lamp according to the present invention can increase the luminous flux maintenance factor by 3 to 4% after 2000 hours as compared with the conventional lamp.
なお、上記実施例では水性バインダとしてポリエチレン
サイドを用いた例について述べたが、他の水性バインダ
を用いても同様の効果が得られるものである。そして、
金属酸化物としてアルミナ以外のものでも良いことは言
うまでもない。In addition, although the example using polyethylene side as the aqueous binder has been described in the above embodiment, the same effect can be obtained by using other aqueous binders. And
It goes without saying that a metal oxide other than alumina may be used.
以上述べた如く本発明によれば、環形蛍光ランプの初期
光束を数％向上させ、かつ、光束維持率も寿命末期まで
従来ランプより数％高く保つことができる。初期光束は
２〜３％，光束維持率は３〜４％高いので、寿命までの
全光束量は少くとも５％向上できるので経済的な効果は
大きなものがある。As described above, according to the present invention, the initial luminous flux of the annular fluorescent lamp can be improved by several percent, and the luminous flux maintenance rate can be kept several percent higher than that of the conventional lamp until the end of its life. Since the initial luminous flux is 2 to 3% and the luminous flux maintenance factor is 3 to 4% higher, the total luminous flux up to the life can be improved by at least 5%, so that there is a great economic effect.
第１図は本発明の製造によってつくった環形蛍光ランプ
の断面構成図，第２図はアルミナの被着量と初期光束と
の関係を示したグラフ，第３図は本発明の環形蛍光ラン
プと従来ランプとの光束維持率曲線を示した図である。 １……ガラス管，２……アルミナ薄膜，３……蛍光体膜FIG. 1 is a sectional configuration diagram of a ring-shaped fluorescent lamp manufactured by the manufacturing method of the present invention, FIG. 2 is a graph showing the relationship between the amount of alumina deposited and the initial luminous flux, and FIG. 3 is the ring-shaped fluorescent lamp of the present invention. It is the figure which showed the luminous flux maintenance factor curve with a conventional lamp. 1 ... Glass tube, 2 ... Alumina thin film, 3 ... Phosphor film
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭51−106142（ＪＰ，Ａ) 特開 昭58−89748（ＪＰ，Ａ) 特開 昭56−114271（ＪＰ，Ａ) 特開 昭57−44959（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-51-106142 (JP, A) JP-A-58-89748 (JP, A) JP-A-56-114271 (JP, A) JP-A-57- 44959 (JP, A)
Claims (3)
にγ−アルミナを懸濁分散したアルミナ塗布液をアルミ
ナ膜の実着量が0.０２mg／cm2〜0.１mg／cm2となるよう
に蛍光ランプ用の直管状のガラス管内面に塗布すること
により前記ガラス管内面にアルミナ膜を形成し、 次いで、前記アルミナ膜上に蛍光体膜を形成し、 次いで、環形蛍光ランプを製造するために前記直管状の
ガラス管の管曲げを行なうことを特徴とする環形蛍光ラ
ンプの製造方法。1. A fluorescent lamp in which an alumina coating solution prepared by suspending and dispersing γ-alumina in an aqueous solution in which polyethylene oxide is dissolved is adjusted so that the amount of the alumina film deposited is 0.02 mg / cm 2 to 0.1 mg / cm 2. To form an alumina film on the inner surface of the glass tube by applying to the inner surface of the straight glass tube, then form a phosphor film on the alumina film, and then to form a ring-shaped fluorescent lamp A method of manufacturing a ring-shaped fluorescent lamp, which comprises bending a tubular glass tube.
キサイドの量は前記水溶液に対して0.０５％〜0.５％で
あることを特徴とする特許請求の範囲第１項記載の環形
蛍光ランプの製造方法。2. The ring fluorescent lamp according to claim 1, wherein the amount of the polyethylene oxide dissolved in the aqueous solution is 0.05% to 0.5% with respect to the aqueous solution. Production method.
ナの量は前記水溶液に対して0.５％〜３％であることを
特徴とする特許請求の範囲第１項又は第２項記載の環形
蛍光ランプの製造方法。3. The method according to claim 1, wherein the amount of γ-alumina suspended and dispersed in the aqueous solution is 0.5% to 3% with respect to the aqueous solution. Of manufacturing a ring-shaped fluorescent lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24812684A JPH0612652B2 (en) | 1984-11-26 | 1984-11-26 | Manufacturing method of ring-shaped fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24812684A JPH0612652B2 (en) | 1984-11-26 | 1984-11-26 | Manufacturing method of ring-shaped fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61126733A JPS61126733A (en) | 1986-06-14 |
| JPH0612652B2 true JPH0612652B2 (en) | 1994-02-16 |
Family
ID=17173616
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24812684A Expired - Lifetime JPH0612652B2 (en) | 1984-11-26 | 1984-11-26 | Manufacturing method of ring-shaped fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0612652B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1548799A4 (en) | 2002-08-30 | 2007-05-23 | Toshiba Lighting & Technology | Fluorescent lamp and its manufacturing method, and illuminating apparatus |
| US7443092B2 (en) | 2002-11-22 | 2008-10-28 | Toshiba Lighting & Technology Corporation | Fluorescent lamp including a multi-ringed bulb |
-
1984
- 1984-11-26 JP JP24812684A patent/JPH0612652B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61126733A (en) | 1986-06-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |