JPH02276132A - Cleaning method of glass tube for fluorescent lamp - Google Patents
Cleaning method of glass tube for fluorescent lampInfo
- Publication number
- JPH02276132A JPH02276132A JP9859789A JP9859789A JPH02276132A JP H02276132 A JPH02276132 A JP H02276132A JP 9859789 A JP9859789 A JP 9859789A JP 9859789 A JP9859789 A JP 9859789A JP H02276132 A JPH02276132 A JP H02276132A
- Authority
- JP
- Japan
- Prior art keywords
- glass tube
- cleaning
- pure water
- steam
- water
- 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
- 239000011521 glass Substances 0.000 title claims abstract description 86
- 238000004140 cleaning Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 64
- 238000005507 spraying Methods 0.000 claims description 2
- 238000013020 steam cleaning Methods 0.000 abstract description 11
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical class [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 14
- 238000000576 coating method Methods 0.000 description 14
- 239000011248 coating agent Substances 0.000 description 13
- 238000004519 manufacturing process Methods 0.000 description 9
- 239000007788 liquid Substances 0.000 description 8
- 238000001035 drying Methods 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000008213 purified water Substances 0.000 description 5
- 230000004907 flux Effects 0.000 description 4
- 238000005406 washing Methods 0.000 description 3
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 239000002562 thickening agent Substances 0.000 description 2
- DKPFZGUDAPQIHT-UHFFFAOYSA-N Butyl acetate Natural products CCCCOC(C)=O DKPFZGUDAPQIHT-UHFFFAOYSA-N 0.000 description 1
- 229920002134 Carboxymethyl cellulose Polymers 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000001768 carboxy methyl cellulose Substances 0.000 description 1
- 235000010948 carboxy methyl cellulose Nutrition 0.000 description 1
- 239000008112 carboxymethyl-cellulose Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000003449 preventive effect Effects 0.000 description 1
- 238000010186 staining Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
Landscapes
- Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)
Abstract
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用ガラス管の内面を水で洗浄する洗
浄方法に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cleaning method for cleaning the inner surface of a glass tube for a fluorescent lamp with water.
直管形ガラス管の内面に蛍光膜を形成する製造工程の前
処理工程であるガラス管内面の洗浄工程は純水を使って
、次のように行われている。第３図に示すように、鉛直
に保持された直管形ガラス管（１）の上端開口にノズル
（２）から純水（３）を噴出させる。純水（３）は５０
°Ｃ〜６０°Ｃの温水で、ガラス管（１）の内面を流下
することでガラス管（１）の内面の汚れを落とし、また
、ソーダガラス製のガラス管（１）においては、その内
面に浮くソーダの汚れを溶解して落とす、ガラス管（１
）の内面を洗浄した純水（３）は液受け（４）からタン
ク（５）に送られ、タンク（５）内で汚れがフィルター
等で除去されてポンプ（６）で再びノズル（２）へと送
られる。タンク（５）内の純水（３）の汚れが目立つ上
層のものはオーバーフローして排除され、その分、新し
い純水が補給される。The cleaning process of the inner surface of a glass tube, which is a pretreatment step in the manufacturing process of forming a fluorescent film on the inner surface of a straight glass tube, is carried out using pure water as follows. As shown in FIG. 3, pure water (3) is jetted from a nozzle (2) into the upper end opening of a straight glass tube (1) held vertically. Pure water (3) is 50
The inside surface of the glass tube (1) is removed by flowing hot water of °C to 60 °C down the inside surface of the glass tube (1). A glass tube (1
) is sent from the liquid receiver (4) to the tank (5), where dirt is removed by a filter, etc., and then sent to the nozzle (2) again by the pump (6). sent to. The contaminated upper layer of pure water (3) in the tank (5) overflows and is removed, and new pure water is replenished accordingly.
以上のように、純水にて内面が洗浄されたガラス管は、
内面乾燥が行われてから蛍光膜形成工程に送られる。こ
の蛍光膜形成工程の製造方法は、ガラス管の内面に酢酸
ブチルやキシレンなどの有機溶剤を含む蛍光体塗布液を
塗布し、これを乾燥させて焼成する製造方法と、ガラス
管内面に水溶性の増粘剤を含む蛍光体塗布液を塗布し、
これを乾燥させて焼成する製造方法の二通りに大別され
る。As mentioned above, a glass tube whose inner surface has been cleaned with pure water,
After the inner surface is dried, it is sent to the fluorescent film forming process. The manufacturing method for this phosphor film forming process is to apply a phosphor coating solution containing an organic solvent such as butyl acetate or xylene to the inner surface of the glass tube, dry it and bake it, or to apply a water-soluble coating solution to the inner surface of the glass tube. Apply a phosphor coating solution containing a thickener,
There are two main manufacturing methods: drying and firing.
上記の前者製造方法は、有機系の蛍光体塗布液を使用す
るため、ガラス管内面にバクテリアが在っても問題無い
が、ガラス管内面から水分を完全に除去する必要性のた
めに、ガラス管を純水で洗浄した後に、ガラス管内面を
十分に乾燥させる必要があって、この乾燥工程に長時間
を要する問題や、有機系蛍光体塗布液は自然環境を汚染
することから、その汚染防止対策が必要である問題があ
る。そこで、最近は上記の後者製造方法であるガラス管
内面に水溶性蛍光体塗布液を塗布して、蛍光膜を形成す
る製造方法が主流になっている。この製造方法では、水
溶性蛍光体塗布液の自然環境汚染防止対策が不必要で、
製造設備的に有利になり、また、洗浄されたガラス管の
内面に水分が残っていても問題無いので、ガラス管の純
水による洗浄後の乾燥は半乾燥であっても良くて、乾燥
時間が短縮される有利さがある。The former manufacturing method above uses an organic phosphor coating solution, so there is no problem even if there are bacteria on the inside of the glass tube, but it is necessary to completely remove moisture from the inside of the glass tube. After cleaning the tube with pure water, the inner surface of the glass tube needs to be thoroughly dried, and this drying process takes a long time, and organic phosphor coatings contaminate the natural environment, so contamination can be avoided. There are problems that require preventive measures. Therefore, recently, the latter manufacturing method described above, in which a water-soluble phosphor coating liquid is applied to the inner surface of a glass tube to form a fluorescent film, has become mainstream. This manufacturing method does not require measures to prevent the water-soluble phosphor coating from contaminating the natural environment.
This is advantageous in terms of manufacturing equipment, and since there is no problem even if moisture remains on the inner surface of the cleaned glass tube, drying after cleaning the glass tube with pure water may be semi-drying, which reduces the drying time. It has the advantage of being shortened.
〔発明が解決しようとする課題］
ところが、ガラス管内面に水溶性蛍光体塗布液で蛍光膜
を形成する場合は、ガラス管内面の汚れを十分に落とす
必要があり、そのためにはガラス管内面を汚れの少ない
高純度の純水で時間をかけて洗浄する必要があった。す
なわち、１本のガラス管の内面を純水で数秒程度の短時
間で洗浄しても、ガラス管の内面の汚れの多くが残り、
これが後の蛍光膜形成に悪影響を及ぼすので、ガラス管
内面の鈍才洗浄はガラス管１本に対して１０秒以上の時
間をかけて行う必要があり、ガラス管洗浄工程の高速化
が難しかった。[Problems to be Solved by the Invention] However, when forming a fluorescent film on the inner surface of a glass tube with a water-soluble phosphor coating liquid, it is necessary to thoroughly remove dirt from the inner surface of the glass tube. It was necessary to spend a lot of time cleaning it with high-purity pure water that has little dirt. In other words, even if the inner surface of a single glass tube is washed with pure water for a short period of time, about a few seconds, much of the dirt remains on the inner surface of the glass tube.
Since this adversely affects the subsequent formation of the fluorescent film, it is necessary to perform blunt cleaning of the inner surface of the glass tube for 10 seconds or more for each glass tube, making it difficult to speed up the glass tube cleaning process.
また、ガラス管内面を洗浄した純水にはガラス管内面の
汚れが混入及び溶解しており、この純水をタンクに収容
して汚れを除き、再使用しているが、純水から汚れを完
全に除去することは技術的に困難であり、特にバクテリ
アなどの微小な汚れを完全に除去するのは無理であり、
純水を循環させて何回もガラス管洗浄に使用していると
汚れの度合が増していく。そこで、ガラス管洗浄工程で
循環している純水に新しい高純度の純水を加えて汚れを
薄め汚れの目立つ純水をタンクでオーバフローさせてい
るが、純水を高純度に保つには新しい純水を逐一に加え
て大量に使用しなければならず、そのため、純水のラン
ニングコストが高（付く問題があった。In addition, dirt from the inside of the glass tube is mixed and dissolved in the pure water used to clean the inside of the glass tube, and this pure water is stored in a tank to remove dirt and reused, but the dirt is removed from the pure water. It is technically difficult to completely remove dirt, especially microscopic dirt such as bacteria.
When circulating pure water and using it to clean glass tubes many times, the degree of contamination increases. Therefore, new high-purity purified water is added to the purified water circulating in the glass tube cleaning process to dilute the dirt, and the purified water with noticeable dirt is allowed to overflow in the tank, but in order to keep the purified water highly pure, new A large amount of pure water had to be added one by one, and as a result, the running cost of pure water was high.
さらに、ガラス管内面を純水で洗浄した後、短時間で半
乾燥させて、ガラス管内面に水溶性蛍光体塗布液を塗布
した場合、洗浄後の半乾燥時のガラス管内面に付着した
純水にバクテリアによる汚れが在ると、この汚れが後で
ガラス管に塗布される水溶性蛍光体塗布液中の増粘剤で
あるカルボキシルメチルセルローズなどの成分を分解し
て腐敗させることがある。このような水溶性蛍光体塗布
液の腐敗は、後で形成される蛍光膜の膜質の劣化、蛍光
ランプの全光束低下の原因の１つになっている。Furthermore, if the inner surface of the glass tube is washed with pure water and then semi-dried for a short period of time, and a water-soluble phosphor coating liquid is applied to the inner surface of the glass tube, it will be noted that the If the water is contaminated with bacteria, this stain may decompose and spoil components such as carboxymethyl cellulose, which is a thickener in the water-soluble phosphor coating solution that is later applied to the glass tube. Such spoilage of the water-soluble phosphor coating liquid is one of the causes of deterioration of the film quality of the phosphor film formed later and a decrease in the total luminous flux of the fluorescent lamp.
本発明は以上の問題点に鑑みてなされたもので、ガラス
管内面の洗浄工程の時間短縮、洗浄効果改善を目的とす
る。The present invention has been made in view of the above problems, and aims to shorten the time required for cleaning the inner surface of a glass tube and improve the cleaning effect.
本発明は上記目的を、ガラス管底面を水蒸気で予め洗浄
してから、純水で洗浄することにより達成するもので、
鉛直に保持された直管形ガラス管の内面に水蒸気を吹き
付けて予備洗浄する工程と、ガラス管の内面を純水の温
水で洗浄する工程を含むことを特徴とする。The present invention achieves the above object by cleaning the bottom of the glass tube with steam in advance and then cleaning it with pure water.
It is characterized by including a step of preliminarily cleaning the inner surface of a straight glass tube held vertically by spraying water vapor on it, and a step of washing the inner surface of the glass tube with warm pure water.
ガラス管内面を純水で洗浄する前に水蒸気で洗浄すると
、ガラス管内面の汚れが水蒸気の熱で効果的に落とされ
、この汚れはガラス管の内面で凝縮する水蒸気の水筒に
溶けて、水筒と共にガラス管の内面を自由落下してガラ
ス管外に排出される。また、水蒸気洗浄されたガラス管
の内面は汚れがほとんど無い状態にあるので、この後の
純水による洗浄は短時間で済み、かつ、純水の汚れる度
合が格段に小さくなる。If you wash the inside of the glass tube with steam before cleaning it with pure water, the dirt on the inside of the glass tube will be effectively removed by the heat of the steam, and this dirt will be dissolved in the water vapor that condenses on the inside of the glass tube, and the dirt will be removed. At the same time, it falls freely down the inner surface of the glass tube and is discharged outside the glass tube. Furthermore, since the inner surface of the glass tube that has been steam cleaned is almost free of dirt, subsequent cleaning with pure water can be done in a short time, and the degree of staining of the pure water is significantly reduced.
以下、本発明の実施例を２つの洗浄工程別に第１図及び
第２図を参照して説明する。Hereinafter, embodiments of the present invention will be described for two cleaning steps with reference to FIGS. 1 and 2.
第１図は、鉛直に保持された直管形ガラス管（１）の下
端開口よりガラス管（１）内にノズル（７）から水蒸気
（８）を吹き付けて、ガラス管（１）の内面を洗浄する
予備洗浄工程を説明するためのものである。水蒸気（８
）は水道水などの１１０数度の過飽和水蒸気で、これを
ガラス管（１）内に吹き込むと、ガラス管（１）の内面
に水蒸気（８）が激しく衝突してガラス管（１）の内面
から汚れを離脱させ、これら汚れはガラス管（１）の内
面で凝縮する水蒸気（８）の水滴に溶ける。そして、汚
れを含む水滴は鉛直のガラス管（１）の内面を自重で流
下し、ガラス管（１）の真下に置かれた容器（９）に収
容される。容器（９）に収容された水（ｌＯ）は汚水で
廃棄処分される。In Figure 1, water vapor (8) is sprayed from a nozzle (7) into the glass tube (1) through the lower end opening of the straight glass tube (1) held vertically, and the inner surface of the glass tube (1) is sprayed. This is for explaining the pre-washing process. Water vapor (8
) is supersaturated steam at a temperature of over 110 degrees, such as tap water, and when this is blown into the glass tube (1), the steam (8) violently collides with the inner surface of the glass tube (1), causing the inner surface of the glass tube (1) to explode. The soils are released from the glass tube (1) and these soils dissolve into droplets of water vapor (8) that condense on the inner surface of the glass tube (1). The water droplets containing dirt flow down the inner surface of the vertical glass tube (1) under their own weight and are stored in a container (9) placed directly below the glass tube (1). The water (lO) contained in the container (9) is disposed of as wastewater.
以上の水蒸気洗浄は水蒸気（８）が高温ゆえに、ガラス
管（１）の内面から汚れを落とす効果に優れ、実際、ガ
ラス管１本当りの水蒸気洗浄時間は数秒程度と短くても
、十分にガラス管（１）の内面の汚れが落とされること
が分かっている。また、使用する水蒸気（８）は高温ゆ
えに、汚れとしてバクテリアが含まれた水道水などであ
っても、バクテリアは熱で死滅して、後で蛍光膜形成に
悪影響を及ぼすことが無い。The steam cleaning described above has an excellent effect of removing dirt from the inner surface of the glass tube (1) due to the high temperature of the steam (8).In fact, even if the steam cleaning time per glass tube is as short as a few seconds, It has been found that dirt on the inner surface of the tube (1) is removed. Moreover, since the water vapor (8) used is at a high temperature, even if it is tap water that contains bacteria as dirt, the bacteria will be killed by the heat and will not have any adverse effect on the formation of the fluorescent film later.
水蒸気洗浄されたガラス管（１）は、次に第２図に示す
ように純水洗浄される。この純水洗浄を行う製造設備は
第３図の設備と同様のものが使用され、第２図の第３図
と同一のものには同一参照符号を付して、本発明での純
水洗浄を説明する。水蒸気洗浄されたガラス管（１）を
鉛直に保持して、上端開口にノズル（２）から純水（１
１）を噴出させて、ガラス管（１）の内面を純水（１１
）で洗浄する。純水（１１）はガラス管（１）から液受
け（４）、タンク（５）へと回収され、ポンプ（６）で
ノズル（２）へと送られて再使用される。The steam-cleaned glass tube (1) is then cleaned with pure water as shown in FIG. The same manufacturing equipment as that shown in Fig. 3 is used for this pure water cleaning, and the same parts as in Figs. 2 and 3 are denoted by the same reference numerals. Explain. Hold the steam-cleaned glass tube (1) vertically and pour pure water (1
1) to coat the inner surface of the glass tube (1) with pure water (11).
). Pure water (11) is collected from the glass tube (1) into the liquid receiver (4) and tank (5), and sent to the nozzle (2) by the pump (6) for reuse.
ガラス管（１）に噴出される純水（１１）は５０°Ｃ〜
６０°Ｃの温水で、ガラス管（１）の内面に残った汚れ
を落とすが、水蒸気洗浄された直後のガラス管（１）の
内面の汚れは少ないか、はとんど無いのが実状である。The pure water (11) spouted into the glass tube (1) is at a temperature of 50°C ~
The dirt remaining on the inner surface of the glass tube (1) is removed with hot water at 60°C, but the reality is that there is little or no dirt on the inner surface of the glass tube (1) immediately after steam cleaning. be.
従って、上記純水洗浄も数秒程度と短い時間だけ行えば
よく、また、純水（１１）がガラス管（１）を洗浄する
ことで汚される割合が大幅に少なく、純水（１１）は高
純度のまま長期にわたり再使用される。Therefore, the pure water cleaning described above only needs to be carried out for a short period of time, approximately a few seconds, and the proportion of pure water (11) contaminated by cleaning the glass tube (1) is greatly reduced, and the pure water (11) has a high It can be reused for a long period of time while maintaining its purity.
以上のガラス管洗浄方法の実験例を説明する。An experimental example of the above glass tube cleaning method will be explained.
１本のソーダガラス製のガラス管に対し、水蒸気洗浄を
２秒間行い、その後、純水洗浄を２秒間行ってから、ガ
ラス管内面を半乾燥させて、ガラス管の内面のソーダを
含む汚れを顕微鏡で調べたところ、汚れ無しの結果が得
られた。A glass tube made of soda glass is washed with steam for 2 seconds, then with purified water for 2 seconds, and the inner surface of the glass tube is semi-dried to remove dirt containing soda from the inner surface of the glass tube. When examined under a microscope, no stains were obtained.
このガラス管の内面に水溶性蛍光体塗布液を塗布し、乾
燥、焼成して蛍光膜を形成して製造された蛍光ランプの
全光束を調べたところ、全光束低ドの異常が無く、品質
が安定することが認められた。When we investigated the total luminous flux of a fluorescent lamp manufactured by coating the inner surface of this glass tube with a water-soluble phosphor coating liquid, drying and baking it to form a fluorescent film, we found that there were no abnormalities in the total luminous flux. was found to be stable.
以上の実験結果と同様のことが、水蒸気洗浄を３秒間、
純水洗浄を１秒間行った場合でも認められた。これらの
実験から、水蒸気洗浄は２〜３秒が望ましく、２秒以下
では効果薄であり、３秒以上は時間的に無駄であること
が分かった。Similar to the above experimental results, steam cleaning was performed for 3 seconds.
This was observed even when washing with pure water was performed for 1 second. From these experiments, it was found that 2 to 3 seconds of steam cleaning is desirable; less than 2 seconds is less effective, and more than 3 seconds is a waste of time.
本発明にように、ガラス管内面の洗浄を水蒸気洗浄と純
水洗浄の２工程に分けて行えば、洗浄工程数が多くなる
が、水蒸気洗浄を短時間行うだけでガラス管内面の汚れ
がほぼ確実に無くなり、後の純水洗浄の時間短縮を可能
にし、実際、ガラス管洗浄を純水洗浄だけで行う従来方
法に比べ、水蒸気洗浄と純水洗浄に要する合計洗浄時間
は約半分に短縮され、ガラス管洗浄工程の大幅な高速化
が可能になる。また、水蒸気洗浄後の純水洗浄は汚れの
ほとんど無いガラス管の内面に純水を流すことで行われ
るので、使用する純水の汚れが少なくて、純水のランニ
ングコストが安くできる。また、純水洗浄後にガラス管
内面を半乾燥させて水溶性蛍光体塗布液を塗布し、蛍光
膜を形成する場合、ガラス管内面にバクテリアなどの汚
れが無く、従って、蛍光膜を膜質良好にして形成するこ
とができ、全光束の安定した高品質の蛍光ランプが製造
できる。If the cleaning of the inside surface of the glass tube is divided into two steps, steam cleaning and pure water cleaning, as in the present invention, the number of cleaning steps will increase, but just by performing steam cleaning for a short time, most of the dirt on the inside of the glass tube will be removed. In fact, compared to the conventional method of cleaning glass tubes using only pure water, the total cleaning time required for steam cleaning and pure water cleaning is cut in half. , it becomes possible to significantly speed up the glass tube cleaning process. Furthermore, since pure water cleaning after steam cleaning is performed by flowing pure water over the inner surface of the glass tube, which has almost no dirt, there is less dirt in the pure water used, and the running cost of pure water can be reduced. In addition, when forming a fluorescent film by semi-drying the inner surface of the glass tube after cleaning with pure water and applying a water-soluble phosphor coating liquid, the inner surface of the glass tube is free of bacteria and other contaminants, and therefore the fluorescent film has good film quality. It is possible to manufacture high-quality fluorescent lamps with stable total luminous flux.
第１図及び第２図は本発明の洗浄方法を工程別に説明す
るためのもので、第１図は水蒸気洗浄工程での洗浄装置
の部分正面図、第２図は純水洗浄工程での洗浄装置の部
分正面図である。
第３図は従来のガラス管洗浄方法を説明するための洗浄
装置の部分正面図である。
（１）−一−ガラス管、 （８）・−水蒸気、（１１
）−純水。
第り図
特
代
許
出
理
願
人
人
日本電気ホーム
エレクトロニクス株式会社
江 原 省 吾１
（。
第２図
第３図Figures 1 and 2 are for explaining the cleaning method of the present invention step by step. Figure 1 is a partial front view of the cleaning equipment in the steam cleaning process, and Figure 2 is the cleaning in the pure water cleaning process. FIG. 3 is a partial front view of the device. FIG. 3 is a partial front view of a cleaning device for explaining a conventional glass tube cleaning method. (1)--Glass tube, (8)--Water vapor, (11
) - pure water. Figure 1: Patent patent application applicant: Shogo Ehara, NEC Home Electronics Co., Ltd. (Figure 2, Figure 3)
Claims (1)
を吹き付けて予備洗浄する工程と、ガラス管の内面を純
水の温水で洗浄する工程とを含む蛍光ランプ用ガラス管
の洗浄方法。(1) A method for cleaning glass tubes for fluorescent lamps, which includes the steps of preliminary cleaning by spraying steam onto the inner surface of a straight glass tube held vertically, and cleaning the inner surface of the glass tube with warm pure water. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9859789A JPH02276132A (en) | 1989-04-17 | 1989-04-17 | Cleaning method of glass tube for fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9859789A JPH02276132A (en) | 1989-04-17 | 1989-04-17 | Cleaning method of glass tube for fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02276132A true JPH02276132A (en) | 1990-11-13 |
Family
ID=14224039
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9859789A Pending JPH02276132A (en) | 1989-04-17 | 1989-04-17 | Cleaning method of glass tube for fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02276132A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004075242A1 (en) * | 2003-02-18 | 2004-09-02 | Tadahiro Ohmi | Fluorescent lamp and its manufacturing method |
| KR101037166B1 (en) * | 2007-10-05 | 2011-05-26 | 쇼오트 아게 | Method for cleaning lamp-glass tube for use in fluorescent-lamp |
| JP2014069100A (en) * | 2012-09-27 | 2014-04-21 | Furusho Electric Industry Co Ltd | Washing apparatus with rapid-cooling nozzle |
| CN106140790A (en) * | 2016-07-29 | 2016-11-23 | 四川圣典节能服务有限公司 | The recycling technique of LED |
| CN106216352A (en) * | 2016-07-29 | 2016-12-14 | 四川圣典节能服务有限公司 | The system of fluorescent material in recycling LED |
-
1989
- 1989-04-17 JP JP9859789A patent/JPH02276132A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004075242A1 (en) * | 2003-02-18 | 2004-09-02 | Tadahiro Ohmi | Fluorescent lamp and its manufacturing method |
| US7501764B2 (en) | 2003-02-18 | 2009-03-10 | Foundation For Advancement Of International Science | Fluorescent lamp and method of manufacturing same |
| KR101037166B1 (en) * | 2007-10-05 | 2011-05-26 | 쇼오트 아게 | Method for cleaning lamp-glass tube for use in fluorescent-lamp |
| JP2014069100A (en) * | 2012-09-27 | 2014-04-21 | Furusho Electric Industry Co Ltd | Washing apparatus with rapid-cooling nozzle |
| CN106140790A (en) * | 2016-07-29 | 2016-11-23 | 四川圣典节能服务有限公司 | The recycling technique of LED |
| CN106216352A (en) * | 2016-07-29 | 2016-12-14 | 四川圣典节能服务有限公司 | The system of fluorescent material in recycling LED |
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