JPS6191824A - Method for manufacturing u-shape fluorescent lamp - Google Patents

Method for manufacturing u-shape fluorescent lamp

Info

Publication number
JPS6191824A
JPS6191824A JP21367584A JP21367584A JPS6191824A JP S6191824 A JPS6191824 A JP S6191824A JP 21367584 A JP21367584 A JP 21367584A JP 21367584 A JP21367584 A JP 21367584A JP S6191824 A JPS6191824 A JP S6191824A
Authority
JP
Japan
Prior art keywords
valve
shaped
suspension
branch pipe
bulb
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
Application number
JP21367584A
Other languages
Japanese (ja)
Inventor
Toru Osono
大園 徹
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
Nippon Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP21367584A priority Critical patent/JPS6191824A/en
Publication of JPS6191824A publication Critical patent/JPS6191824A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/20Manufacture of screens on or from which an image or pattern is formed, picked up, converted or stored; Applying coatings to the vessel
    • H01J9/22Applying luminescent coatings
    • H01J9/221Applying luminescent coatings in continuous layers
    • H01J9/223Applying luminescent coatings in continuous layers by uniformly dispersing of liquid

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

PURPOSE:To remove necessity for turn of a valve in application so as to enable high speed application and easy uniformity of fluorescent film thickness by performing application of phosphor suspension to the inner peripheral face and forced drying of the applied liquid by means of a branch pipe in the center of the curved portion of a U-shape valve. CONSTITUTION:A U-shape valve 3 is stood and retained with a curved portion 3c right above and open ends 5a, 5b are closed by plugs 7, 7 of a valve open end opening and closing means 6. In this condition, phosphor suspension 9 is injected from a branch pipe 4 until the valve 3 is filled. At the same time when injection of the suspension 9 is completed, the means 6 is removed to the suspension from the ends 5a, 5b and hot wind is fed from the branch pipe 4 simultaneously with flowing out. As the flowing out speed of this time is constant and flowing out is completed in a short time, the suspension 9 is applied to the inner peripheral face of the valve 3 in a uniform thickness, and forced drying is performed in the same speed in straight pipe portions 3a, 3b and fluorescent film thickness in the straight pipe portions 3a, 3b can be uniformed.

Description

【発明の詳細な説明】 崖1」J■11牙野 この発明はU字形螢光ランプの製造方法で、詳しくはU
字形バルブの内周面への螢光膜の形成方法に関する。
[Detailed Description of the Invention] Cliff 1"J
The present invention relates to a method for forming a fluorescent film on the inner circumferential surface of a letter-shaped bulb.

従来夏肢圭 螢光ランプは直管形と環形のものが主流を占めているが
、最近ではU字形のものが直管形螢光ランプに比べ長さ
が約半分になり、環形螢光ランプに比べ外径寸法が大幅
に小さくなってコンパクト化が可能である等の利点から
見直され、電球口金型螢光ランプ装置などに多用される
傾向にある。このU字形螢光ランプにおける螢光膜形成
工程は直管形バルブをU字形に曲成加工した後、U字形
バルブ内に螢光体懸濁液を流し込んでバルブ内周面に螢
光体懸濁液を塗布してからこれを乾燥させ焼成する工程
で行われるのが一般的である。
Conventionally, straight tube and ring-shaped fluorescent lamps have been the mainstream, but recently U-shaped fluorescent lamps have become about half the length of straight tube fluorescent lamps, and ring-shaped fluorescent lamps have become popular. It has been reconsidered due to its advantages such as being able to be made more compact due to its significantly smaller outer diameter compared to the previous one, and is now being widely used in bulb cap type fluorescent lamp devices and the like. The process of forming a phosphor film in this U-shaped fluorescent lamp involves bending a straight tube bulb into a U-shape, and then pouring a phosphor suspension into the U-shaped bulb to suspend the phosphor on the inner peripheral surface of the bulb. It is generally carried out by applying a cloudy liquid, drying it, and then firing it.

このU字形バルブ内周面への螢光膜の形成方法として、
例えば特開昭55−124928号公報に次の三方法が
開示されている。
As a method for forming a fluorescent film on the inner peripheral surface of this U-shaped bulb,
For example, the following three methods are disclosed in Japanese Unexamined Patent Publication No. 55-124928.

第1の方法は第10図の(イ)に示すようにU字形バル
ブ(1)をその両開口端部を上にして立設保持しておい
て、−関口端部よりバルブ(1)内に螢光体懸濁液(2
)を満杯になるまで注入してから、第10図の(ロ)に
示すようにU字形バルブ(1)を上下逆に反転させて内
部の螢光体懸濁液(2)を流出させる方法である。
The first method is to hold the U-shaped valve (1) upright with both opening ends facing upward, as shown in Figure 10 (A), and then enter the valve (1) from the Sekiguchi end. Fluorescent suspension (2
) until it is full, then turn the U-shaped bulb (1) upside down as shown in Figure 10 (b) and let the phosphor suspension (2) flow out. It is.

第2の方法は第11図に示すようにU字形バルブ(1)
をその両開口端部を下にして立設保持しておいて、−開
口端部からバルブ(1)内に螢光体懸濁液(2)を噴き
上げて他の開口端部より流出させる方法である。この場
合は両開口部より螢光体懸濁液(2)をバルブ(1)内
に同時に噴出させて満杯になると噴出を止めて両開口端
部より流出さ・Uることも一部で実施されている。
The second method is to use a U-shaped valve (1) as shown in Figure 11.
A method in which the fluorescent suspension (2) is held upright with both open ends facing down, and the phosphor suspension (2) is spouted into the bulb (1) from the open end and flows out from the other open end. It is. In this case, in some cases, the phosphor suspension (2) is simultaneously ejected into the bulb (1) from both openings, and when it becomes full, the ejection is stopped and the liquid flows out from both opening ends. has been done.

発所尤解決〜しよ→Jご北五冊題点 上述第1の方法はU字形バルブ内に螢光体懸濁液を満杯
にしてからU字形バルブの上下を反転させて流出させる
ので、バルブ内周面への螢光体懸濁液の塗布が比較的均
一に行い易いが、U字形バルブを反転させる工程が必要
なため1回の液塗布速度が遅くなり量産性が悪かった。
The first method mentioned above is to fill the U-shaped bulb with the phosphor suspension and then turn the U-shaped bulb upside down to let it flow out. Although it is easy to apply the phosphor suspension to the inner circumferential surface of the bulb relatively uniformly, the process of inverting the U-shaped bulb is necessary, which slows down the rate of one application of the liquid, resulting in poor mass productivity.

また上述箱2の方法はU字形バルブ内への螢光体懸濁液
の噴出速度を上げれば1回の液塗布速度が上がるが、液
噴出速度を上げる程バルブ内周面への螢光体懸濁液の均
一な塗布が難しくなり、そのため液塗布速度の高速化が
難しかった。またU字形バルブ内周面に塗布された螢光
体懸濁液を自然乾燥させていては多大な時間を要し、そ
こでU字形バルブの一開口端部から他の開口端部へと温
風を吹き流して強制乾燥させることが行われているが、
この温風をバルブ内に吹き込む作業が面倒であり、また
バルブ内に吹き込まれた温風は温度降下して、U字形バ
ルブの曲成部を境にした両面管部の内周面に塗布された
螢光体懸濁液の乾燥速度に大差が生じて乾燥後の焼成で
形成される螢光膜の膜厚均一化を難しくする不都合があ
った。
In addition, in the method of box 2 mentioned above, increasing the jetting speed of the phosphor suspension into the U-shaped bulb will increase the speed of one application, but the higher the jetting speed, the more the phosphor will be applied to the inner peripheral surface of the bulb. It became difficult to uniformly apply the suspension, which made it difficult to increase the liquid application speed. Furthermore, it takes a lot of time to naturally dry the phosphor suspension applied to the inner circumferential surface of the U-shaped bulb, so warm air is passed from one open end of the U-shaped bulb to the other. Forced drying is carried out by blowing away the
The work of blowing this hot air into the valve is troublesome, and the temperature of the hot air blown into the valve drops and is applied to the inner peripheral surface of the double-sided pipe section bordering the bent part of the U-shaped valve. There is a problem in that a large difference occurs in the drying speed of the phosphor suspension, which makes it difficult to equalize the thickness of the phosphor film formed by firing after drying.

朋    ° るための 本発明は上記問題点に鑑み提案されたもので、U字形バ
ルブの曲成部の外側中央に連結一体化された枝管を使っ
てU字形バルブ内周面に螢光体懸濁液を塗布し、その塗
布膜を強制乾燥させることにより上記問題点を解決した
ものである。
The present invention was proposed in view of the above-mentioned problems, and uses a branch pipe connected and integrated at the center of the outside of the curved portion of the U-shaped bulb to inject a fluorescent substance onto the inner circumferential surface of the U-shaped bulb. The above problems are solved by applying a suspension and forcing the coating film to dry.

即ち、本発明は上述枝管を有するU字形バルブを曲成部
を上にして立役保持して、バルブ両開口端部を閉塞した
状態で枝管よりバルブ内に螢光体懸濁液を満杯になるま
で注入し、次にこのU字形バルブの両開口端部を開いて
内部の螢光体懸濁液を流出させておいてから、枝管より
U字形バルブ内に温風を吹き込んでバルブ内周面に塗布
された螢光体懸濁液を強制乾燥させる方法を提供する。
That is, in the present invention, the U-shaped bulb having the above-mentioned branch pipes is held upright with the curved part facing upward, and the bulb is filled with a phosphor suspension from the branch pipes with both opening ends of the bulb closed. Next, open both ends of this U-shaped valve to let the phosphor suspension inside flow out, and then blow warm air into the U-shaped bulb from a branch pipe to close the valve. To provide a method for forcibly drying a phosphor suspension applied to an inner peripheral surface.

、1ffl 上記手段によると、U字形バルブを上下反転させること
無くU字形バルブ内に螢光体懸濁液を満杯にしてから抜
くことができるので、U字形バルブ内周面への液塗布速
度の高速化、塗布膜の均一化が容易になる。またU字形
バルブの曲成部に連結された枝管は最終的にチップオフ
されて除去されるが、この枝管はU字形バルブの排気管
やU字形螢光ランプ点灯時の最冷点設定部などとして利
用できる。
, 1ffl According to the above means, it is possible to fill the U-shaped bulb with the phosphor suspension and then drain it without turning the U-shaped bulb upside down. It becomes easier to increase speed and make the coating film uniform. In addition, the branch pipe connected to the bent part of the U-shaped bulb is eventually chipped off and removed, but this branch pipe is used to set the exhaust pipe of the U-shaped bulb and the coldest point when lighting the U-shaped fluorescent lamp. It can be used as a section.

実1皿 本発明方法の具体的実施装置及びその動作を第1図乃至
第4図に基づき以下説明する。
A specific apparatus for carrying out the method of the present invention and its operation will be described below with reference to FIGS. 1 to 4.

先ず第1図に示すような枝管付U字形バルブ(3)を用
意する。このU字形バルブ(3)は2本の略平行な直管
部(3a)  (3b)が曲成部(3c)で連結された
もので、曲成部(3C)の外側中央に1本の枝管(4)
が連結一体化されている。またU字形バルブ(3)に対
し、このバルブ(3)の両開口端部(5a)  (5b
)を適宜閉塞するバルブ開口端開閉手段(6)を用意す
る。バルブ開口端開閉手段(6)は例えばU字形バルブ
(3)の両開口端に適宜接合されて両開口端部(5a)
  (5b)を閉塞する弾性の栓(7)(7)と、この
栓(7)(7)を上面に固定する柱支持体(8)で構成
される。
First, a U-shaped valve (3) with a branch pipe as shown in FIG. 1 is prepared. This U-shaped valve (3) is made up of two approximately parallel straight pipe parts (3a) and (3b) connected by a curved part (3c), with one tube located at the center of the outside of the curved part (3C). Branch pipe (4)
are connected and integrated. Also, for the U-shaped valve (3), both open ends (5a) (5b
) is prepared. Valve opening end opening/closing means (6) for appropriately closing the The valve opening end opening/closing means (6) is suitably joined to both opening ends of the U-shaped valve (3), for example, so that both opening ends (5a)
It is composed of an elastic stopper (7) (7) that closes the stopper (5b), and a pillar support (8) that fixes the stopper (7) (7) to the upper surface.

次に動作を説明すると、先ずU字形バルブ(3)を曲成
部(3c)を真上にして立設保持しておいて、第2図に
示すようにU字形バルブ(3)の両開口端部(5a) 
 (5b)をバルブ開口端開閉手段(6)の栓(7)(
7)で塞ぐ。この状態で枝管(4)からバルブ(3)内
に螢光体懸濁液(9)を100cal/sec程度の液
注入速度で注入し、バルブ(3)内に螢光体懸濁液(9
)が満杯になると液注入を止める。次に液注入完了と同
時に第3図に示すようにバルブ両開口端部(5a)  
(5b)からバルブ開口端開閉手段(6)を外して開口
端部(5a)  (51))を開き、バルブ(3)内の
螢光体懸濁液(9)を両開口端部(5a)  (5b)
より同時に流出させると同時に枝管(4)から温風(1
0) を送り込む。この時の液流出速度はほぼ一定で且
つ短時間で行われるので、バルブ(3)内周面に螢光体
懸濁液(9)は第10図の方法と同様にほぼ均一な厚さ
で塗布される。この液注入から液流出までの液塗布速度
は第10図の方法に比べ約10倍の速さで行える。
Next, to explain the operation, first, the U-shaped valve (3) is held upright with the bent part (3c) directly above, and both openings of the U-shaped valve (3) are held as shown in Fig. 2. End (5a)
(5b) of the valve opening end opening/closing means (6) (7) (
Close with 7). In this state, the phosphor suspension (9) is injected into the bulb (3) from the branch pipe (4) at a liquid injection rate of about 100 cal/sec. 9
) is full, stop the liquid injection. Next, as soon as the liquid injection is completed, as shown in Fig. 3, both opening ends (5a) of the valve are opened.
Remove the bulb opening end opening/closing means (6) from (5b) to open the opening ends (5a) (51)), and transfer the phosphor suspension (9) in the bulb (3) to both opening ends (5a). ) (5b)
At the same time, hot air (1
0) is sent. Since the liquid outflow speed at this time is almost constant and is carried out in a short period of time, the phosphor suspension (9) is coated on the inner circumferential surface of the bulb (3) with an approximately uniform thickness as in the method shown in Fig. 10. applied. The liquid application speed from liquid injection to liquid outflow can be approximately 10 times faster than the method shown in FIG.

温風を送り込むことによって温風(10)はバルブ(3
)の曲成部(3c)から二手に分かれて両直管部(3a
)  (3b)へと流れ開口端部(5a)(5b)より
外部に排出され、この間にバルブ(3)内周面に塗布さ
れた螢光体懸濁液(9°)が強制乾燥される。この乾燥
は両直管部(3a)(3b)でほぼ同速に行われるので
両直管部(3a)(3b)内での螢光膜厚の均一化を図
ることができる。
By sending hot air, the hot air (10) passes through the valve (3).
) is divided into two parts from the curved part (3c) and both straight pipe parts (3a
) (3b) and is discharged to the outside from the opening ends (5a) (5b), during which time the phosphor suspension (9°) applied to the inner peripheral surface of the bulb (3) is forced to dry. . Since this drying is carried out at substantially the same speed in both the straight pipe parts (3a) and (3b), it is possible to make the thickness of the fluorescent film uniform in both the straight pipe parts (3a and 3b).

第5図は上記バルブ開口端開閉手段(6)の変形例を示
すもので、これはU字形バルブ(3)の両開口端部(5
a)  (5b)に適宜装着されるブロック(11)に
開口端部(5a)  (5b)に合う液及び空気の通路
(12)  (12)を設け、通路(12)(12)の
一部に通路(12)  (12>を適宜開閉する開閉弁
(13)  (13)を配備したものである。
FIG. 5 shows a modification of the valve opening end opening/closing means (6), which is a modification of the valve opening end opening/closing means (6).
a) Provide liquid and air passages (12) (12) that fit the open ends (5a) (5b) in the block (11), which is appropriately attached to (5b), so that a part of the passages (12) (12) On-off valves (13) (13) are provided to open and close the passages (12) (12>) as appropriate.

この第5図のバルブ開口端開閉手段(6”)を開閉弁(
13)  (13)で通路(12)  (12)を閉じ
ておいてU字形バルブ(3)に装着すると、バルブ(3
)内に所望の液注入が行われ、満杯になると開閉弁(1
3)  (13)が第5図の鎖線位置に開いて通路(1
2)  (12)が開き液流出が行われ、その後温風(
10)による乾燥が行われる。
The valve opening end opening/closing means (6”) shown in Fig. 5 is the opening/closing valve (
13) Close the passage (12) (12) with (13) and attach it to the U-shaped valve (3).
) is injected with the desired liquid, and when it is full, the on-off valve (1
3) (13) opens at the chain line position in Figure 5 and opens the passage (1).
2) (12) opens, liquid flows out, and then warm air (
10) Drying is performed.

以上のようにして螢光膜が形成されると、U字形バルブ
(3)はステム封止工程などの後工程に送られ、枝管(
4)は根元でチップオフされて除去される。ところで、
この枝管(4)は次のような利用価値がある。
After the fluorescent film is formed as described above, the U-shaped bulb (3) is sent to a subsequent process such as a stem sealing process, and the branch pipe (
4) is chipped off at the root and removed. by the way,
This branch pipe (4) has the following utility value.

例えば枝管(4)をU字形バルブ(3)の排気管として
利用する。この場合は第6図に示すようにU字形バルブ
(3)の両開口端部(5a)(5b)に電極(14) 
 (14)を有するステム(15)(15)を封止した
後、枝管(4)を利用して排気や必要なガス封入が行わ
れて、最終的に枝管(4)は第7図に示すようにチップ
オフされる。
For example, the branch pipe (4) is used as an exhaust pipe for the U-shaped valve (3). In this case, as shown in Figure 6, electrodes (14) are connected to both open ends (5a) and (5b) of the U-shaped bulb (3).
(14) After sealing the stem (15) (15), the branch pipe (4) is used for evacuation and necessary gas filling, and finally the branch pipe (4) is shown in Fig. 7. Tip off as shown.

尚、枝管(4)を先にチップオフしてU字形バルブ(3
)に排気管付ステムを封止して仕上げを行うことも可能
である。
Note that the branch pipe (4) is tipped off first and the U-shaped valve (3
) can be finished by sealing the stem with exhaust pipe.

上述要領で製造されたU字形螢光ランプの用途は様々で
、その二側を第8図と第9図に示す。第8図はU字形螢
光ランプ(16)の両端にソケット(17)を固着した
U字形螢光ランプ装置(18)を、第9図はU字形螢光
ランプ(16)を球形のセード(19)内に収納した電
球口金形螢光ランプ装置(20)を示す。この両螢光ラ
ンプ装置(1B)  (20)をU字形螢光ランプ(1
6)の曲成部を下にして使用するとU字形螢光ランプ(
16)の画成部中央にあるチップオフされた枝管根元の
突起部(m)が真下にきて、ここがランプ点灯時におけ
る管壁温度の最冷点となって、突起部(m)内にバルブ
内の余剰水銀が凝縮して水銀蒸気圧を光出力が最大値に
近付けるようコントロールする。但し、第9図の螢光ラ
ンプ装置(20)においては上記突起部(m )を最冷
点にするためセード(19)の真下部分に通気孔(19
”)を設ける等の工夫が必要である。
A U-shaped fluorescent lamp made in the manner described above has a variety of uses, two sides of which are shown in FIGS. 8 and 9. Figure 8 shows a U-shaped fluorescent lamp device (18) with a socket (17) fixed to both ends of the U-shaped fluorescent lamp (16), and Figure 9 shows a U-shaped fluorescent lamp (16) with a spherical shade ( 19) shows the bulb cap type fluorescent lamp device (20) housed in the interior of the device. These two fluorescent lamp devices (1B) (20) are connected to the U-shaped fluorescent lamp (1B) (20).
6) When used with the curved part facing down, a U-shaped fluorescent lamp (
The protrusion (m) at the base of the tipped-off branch pipe in the center of the dividing part of 16) is directly below, and this becomes the coldest point of the tube wall temperature when the lamp is lit, and the protrusion (m) Excess mercury in the bulb condenses inside the bulb, and the mercury vapor pressure is controlled so that the light output approaches its maximum value. However, in the fluorescent lamp device (20) shown in Fig. 9, a ventilation hole (19) is provided directly below the shade (19) in order to make the projection (m) the coldest point.
”) is necessary.

1皿企立且 本発明のようにU字形バルブの画成部中央の枝管を利用
してバルブ内周面への螢光体懸濁液塗布、及び塗布液の
強制乾燥を行うことにより、液塗布時にバルブを反転さ
せる必要が無くて液塗布の高速化が図れ、またU字形バ
ルブの両面管部内の塗布液乾燥が同一条件下で行えて螢
光膜の膜厚均一化が容易になる。更にU字形バルブの枝
管は排気管やランプ点灯時の最冷点を決めるものなどに
利用でき、その付加価値は大である。
By applying a phosphor suspension to the inner circumferential surface of the bulb using a branch pipe at the center of the defining part of the U-shaped bulb as in the present invention, and forcing drying of the coating solution, as in the present invention, There is no need to reverse the valve during liquid application, which speeds up liquid application, and the coating liquid can be dried in the double-sided tubes of the U-shaped bulb under the same conditions, making it easier to make the thickness of the fluorescent film uniform. . Furthermore, the branch pipes of the U-shaped valve can be used for things such as exhaust pipes and determining the coldest point when lighting lamps, which has great added value.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図乃至第4図は本発明の詳細な説明するための具体
的−実施装置の各動作時における概略正面図、第5図は
本発明の方法の伯の実施装置例を示す概略正面図、第6
図及び第7図は本発明の方法による乾燥後の製造例を示
すパルプ正面図、第8図及び第9図は本発明の方法で得
たU字形螢光ランプを使った照明装置の二側を示す各正
面図である。第10図(イ)(ロ)と第11図は従来の
U字形螢光ランプ製造方法の二側を説明するためのパル
プ正面図である。 (3)−U字形パルプ、(3c)−曲成部、(41−枝
管、(5a)  (5bL−開口端部、(9)−螢光体
懸濁液、(10) −温風。 蛸      詣 N5I1 I’s@1 第611          第711第r(2) 第11−
1 to 4 are schematic front views of a specific implementation device for explaining the present invention in detail during each operation, and FIG. 5 is a schematic front view showing an example of the implementation device of the method of the present invention. , 6th
Fig. 7 and Fig. 7 are front views of pulp showing an example of production after drying by the method of the present invention, Fig. 8 and Fig. 9 are two sides of a lighting device using a U-shaped fluorescent lamp obtained by the method of the present invention. FIG. FIGS. 10(a) and 11(b) are front views of pulp for explaining two sides of the conventional U-shaped fluorescent lamp manufacturing method. (3) - U-shaped pulp, (3c) - bend, (41 - branch pipe, (5a) (5bL - open end), (9) - phosphor suspension, (10) - warm air. Octopus Pilgrimage N5I1 I's@1 611th 711th r(2) 11th-

Claims (1)

【特許請求の範囲】[Claims] (1)曲成部の外側中央に枝管が連結一体化されたU字
形バルブをその曲成部を上にし両開口端部を閉塞して立
設保持した状態で前記枝管よりU字形バルブ内に螢光体
懸濁液を満杯になるまで注入してから、両開口端部を開
いて螢光体懸濁液を流出させ、次に枝管より温風を吹き
込みU字形バルブ内周面に塗布された螢光体懸濁液を乾
燥させる工程を含むことを特徴とするU字形螢光ランプ
の製造方法。
(1) A U-shaped valve with a branch pipe connected to the outside center of the bent part is held upright with the bent part facing up and both opening ends closed, and the U-shaped valve is inserted from the branch pipe. After injecting the phosphor suspension into the tube until it is full, open both opening ends to let the phosphor suspension flow out, and then blow warm air through the branch pipe to blow the phosphor suspension into the U-shaped bulb. 1. A method for manufacturing a U-shaped fluorescent lamp, comprising the step of drying a phosphor suspension applied to a phosphor suspension.
JP21367584A 1984-10-11 1984-10-11 Method for manufacturing u-shape fluorescent lamp Pending JPS6191824A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21367584A JPS6191824A (en) 1984-10-11 1984-10-11 Method for manufacturing u-shape fluorescent lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21367584A JPS6191824A (en) 1984-10-11 1984-10-11 Method for manufacturing u-shape fluorescent lamp

Publications (1)

Publication Number Publication Date
JPS6191824A true JPS6191824A (en) 1986-05-09

Family

ID=16643106

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21367584A Pending JPS6191824A (en) 1984-10-11 1984-10-11 Method for manufacturing u-shape fluorescent lamp

Country Status (1)

Country Link
JP (1) JPS6191824A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009060153A1 (en) 2009-01-22 2010-09-16 Nec Lighting, Ltd. Fluorescent tube, fluorescent lamp and method of manufacturing a fluorescent tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009060153A1 (en) 2009-01-22 2010-09-16 Nec Lighting, Ltd. Fluorescent tube, fluorescent lamp and method of manufacturing a fluorescent tube

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