JPS60100357A - Low pressure discharge lamp - Google Patents

Abstract

PURPOSE:To prevent the excessive local glass thickness along the periphery of a connection hole when linear glass tube ends are connected together to form a U-shaped tube by specifying the relationship between the diameter of the connection hole and the inner diameter of the glass tube. CONSTITUTION:A U-shaped tube 1 used as a compact low pressure discharge lamp is provided in parallel almost adhering to linear glass tubes 11 and 12 made of soda lime and its one end side is formed by being welded and joined, using a joint 13 having a connection hole 14. In this case, after the ends of the glass tubes 11 and 12 are welded by the heat of a gas burner, the joint 13 and the connection hole 14 are molded by spraying air from the opening side using a two-split mold that is used additionally for molding them so as to satisfy the relationship of D/2<=d<D, where the diameter of the connection hole 14 is d and the inner diameter of the glass tubes 11 and 12 is D. As a result, the glass thickness along the periphery of the connection hole 14 can be made uniform and the strength of the joint 13 can be improved.

Description

【発明の詳細な説明】 〔発明の技術分野〕 この発明け、放電路を規制する屈曲したカラス管を有す
る低圧放電ランプに関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a low pressure discharge lamp having a bent glass tube regulating a discharge path.

〔従来技術〕[Prior art]

カラス管會その中央部でＵ字状に折曲し１こり。 Bend the crow tube into a U-shape at its center.

あるいはカラス管同士を直接接合して屈曲したカラス管
を作り、このガラス管で放電路を規制するようにした小
形螢光ランプは種々提案さねている。Alternatively, various proposals have been made for small fluorescent lamps in which glass tubes are directly joined together to form a bent glass tube, and the discharge path is regulated by this glass tube.

第１図に示されているものけ、その−例として本出願人
が先に提案したものである１、図において。The Mononoke shown in FIG. 1, as an example of which was previously proposed by the applicant, is shown in FIG.

（１）はＵ字状に形成されたガラス管で、Ｃのガラス管
（ＩｌｌｄＺ本の直線状ガラス管θ１）Ｏ２を外部とは
気密を保って相互に連通する連通孔０４１の周ｗ、を直
接接合して形成さねている。また接合部（１りを除く直
線状カラス管（以後脚部（１１１０３と称ｊ）同士はほ
ぼ当接態様姥なっている。（２）はカラス管０）の両端
に封海さ１１たステムで、このステム（２）に１ｄ夫々
′ｆｌｊ４舅（３）が設りらＴ７ている。（４）Ｈこの
カラス管（１）の内面に被Ｍさねた螢光体層である。(1) is a glass tube formed in a U-shape, and has a circumference w of a communication hole 041 that communicates the glass tube C (IlldZ straight glass tubes θ1) O2 with the outside while keeping it airtight. Formed by direct bonding. In addition, the joints (straight crow tubes except for 1 (hereinafter referred to as leg portions (11103) are almost in contact with each other. (2) is crow tube 0) have stems sealed at both ends. This stem (2) is provided with 1d each 'flj4' (3) and T7.(4)H is a phosphor layer coated on the inner surface of this crow tube (1).

このように４１ｒｆ成されたランプは、夫々の脚部αＢ
（１２同士が当接Ｌ「１（様に形成しであるため、Ｕ字
状管（１）の接合部Ｑ３）に力が加わるような掴み方１
丁なイつぢ両脚部＋Ｉ１１＋１２の外側より中１ｔｊ方
向に力が加わるような掴み方をしても破用１−ることが
ないので、製造工程中ガラス管（１）の把持方向を自由
にできるなどの利点舎イｊ１−る。The lamp thus constructed with 41rf has each leg αB
(Since the 12 are in contact with each other L'1 (, the gripping method 1 is such that force is applied to the joint Q3 of the U-shaped tube (1))
Even if a force is applied from the outside of both legs +I11+12 in the middle direction, damage will not occur, so the gripping direction of the glass tube (1) can be freely adjusted during the manufacturing process. Benefits such as being able to do so.

しかしながら、上述したランプにおいては、接合部（１
３は、　１１１１団ｌｉ　（＋　＋ｌ　Ｑ２の１１１方
向と平行な軸（Ｙ−Ｙ）４Ｊ１１１と、この平行軸（Ｙ
−Ｙ）方向と直交する軸（Ｘ−Ｘ）側とに肉厚の差が生
じ、これが原因で。However, in the lamp described above, the junction (1
3 is 1111 group li (+ +l axis parallel to the 111 direction of Q2 (Y-Y) 4J111 and this parallel axis (Y
-Y) direction and the axis (X-X) side perpendicular to the wall thickness difference, which is the cause.

接合部＋１３１の割イ１が生じ、製造歩留の低下や製品
の信頼性を損ねる問題があった。A split of +131 at the joint occurred, resulting in a problem of lowering manufacturing yield and impairing the reliability of the product.

つまり、接合バ１５１１．１１百−形成する際９脚部［
１１Ｈ＋２の連通孔α４１１．ｉ旧］予定箇７ツ［をカ
ス炎により加熱軟化させたのち１脚部（ＩＩＩ（１２１
の内部の圧力を高め、開口予定箇所のカラス肉を外方に
膨ませ、こののちこの膨みの先端部を開口し、この開口
の周縁を加熱溶融しながら互いを溶着していた。このた
め、接合部（Ｔ３１となる脚部＋ＩＩＩＱ２の膨みは、
平行軸（Ｙ−Ｙ゛）方向に対し直交ｎｍｌ＋（ｘ−ｘ）
方向の方が肉の移動（伸び）が大きくなり、接合後の肉
厚のバランスは平行軸ｊＹ−’Ｙ）方向が厚く直交軸（
Ｘ−Ｘ）方向が薄くなっていた。In other words, when forming the joint bar 1511.11 hundred, the nine legs [
11H+2 communication hole α411. After heating and softening the seven planned parts [i old] with a scum flame, one leg part (III (121
The internal pressure was increased to cause the crow meat to bulge outward at the location where the opening was planned, and then the tip of this bulge was opened, and the periphery of the opening was heated and melted to weld together. For this reason, the bulge of the leg + IIIQ2 at the joint (T31) is
Orthogonal to the parallel axis (Y-Y゛) direction nml+(x-x)
The movement (elongation) of the meat is greater in the direction of
XX) direction was thinner.

〔発明の［要〕[Essentials of the invention]

この発明はこのような事情に鑑みてなさイアたもので、
カラス管の連通孔同士の周縁全面接接合し。This invention was made in view of these circumstances,
The entire periphery of the communicating holes of the glass tubes is joined together.

その連通孔全通る屈曲した放電、路全形成するようにし
たものにおいて、連通孔の山径全ｄ、カラス管の内径（
ｒＤとしたとき、夫々の関係がＶ２≦ｄ　（Ｄ　の範囲
に有するようにし、連通孔周縁のカラス肉厚が過度に偏
肉することを防止し。In the case where a curved discharge path is formed through the entire communication hole, the total diameter d of the communication hole, the inner diameter of the glass tube (
When rD, each relationship is set in the range of V2≦d (D) to prevent the thickness of the glass around the communication hole from becoming excessively uneven.

接合部の強度金増丁ことかでき　＄！！造歩留の向上お
よび製品のイと軸性を高めた低圧放電ランプケ提供する
ことを目的とする。The strength of the joint can be increased by $! ! The purpose of the present invention is to provide a low-pressure discharge lamp with improved production yield and improved axiality of the product.

Ｃ発すノの実施例〕 以下、この発明の一実施例を駆３図ないし第５図に基づ
き説明する。Embodiment of C Emitting] Hereinafter, an embodiment of the present invention will be described based on FIGS. 3 to 5.

第３図はＵ字状費企示１−図であり、第４図は同じく装
部拡大断面図である。FIG. 3 is a first view of the U-shaped cover, and FIG. 4 is an enlarged cross-sectional view of the cover.

そしてこのＵ字状管（１）および連通孔ａａＩ′１次の
ようにして作った　第５図（Ａ）に示′１−ように、外
径１６．５＋＋＋ｒｑ、内ｆｆ（：ｒｌ）　１５　ｍで
全長が８８即の２本の直線状したソーダライム製カラス
管をほぼ密着させて並設し１両開口端（１１ａ）（１２
ａ）　よりガスバーナー０１１を挿入し、このバーナー
ｆｆ１１１の熱によってガラス骨相？ｉを溶着接合させ
るとともに、バーナーｃ２１）の風圧によって内径が約
９ｍπの連通孔（１４１′ｆ：同時に形成さ一１ＩＸる
。This U-shaped tube (1) and the communication hole aaI'1 were made as shown in Figure 5 (A), with an outer diameter of 16.5+++rq and an inner diameter of 15 m. Two straight soda-lime glass tubes with a total length of 88 mm were arranged side by side in close contact with each other, and one open end (11a) and one (12) were installed in parallel.
a) Insert the gas burner 011, and use the heat of this burner ff111 to make the glass bone phase. At the same time, a communicating hole (141'f: 1IX) having an inner diameter of about 9 mπ is formed by the wind pressure of the burner c21).

次いで、（Ｂ）に示づ°ように溶着接合部ｆ１３′ｆｆ
：含む開口端（１１ａ、）（＋２ｅ、）　周辺を加熱し
開口端（１１ａ）（１２ａ）を封着づ゛る３、その後、
　（ｃ）ｒｒｃ示すように接合部θＪの成形と連通孔（
１４）の成形ケ兼ねた２分割金型（２２を装着し、カラ
ス管の他Ｘ）ａ　（１１ｂ）（１２ｂ）　、ｌ：リニア
ーを吹き込み、カラス管を金型になじませて、外部に対
して気密なＵ字状カラス管（１）および連通孔（１４１
を完成する。、ＣのＵ字状カラス管（１１の全高（Ｈ）
は９０ｍｍ　。Next, as shown in (B), the welded joint f13'ff
: Containing the open end (11a,) (+2e,) 3. Heat the surrounding area and seal the open end (11a) (12a) 3. Then,
(c) As shown in rrc, the forming of the joint θJ and the communication hole (
14) Attach the two-part mold (22) that also serves as the molding, and inject the glass tube with X) a (11b) (12b), l: Linear, blend the glass tube into the mold, and Airtight U-shaped crow tube (1) and communication hole (141
complete. , U-shaped crow tube of C (11 total height (H)
is 90mm.

巾（ｗａｉｔ　３３．５　ｍｍでありまた連通孔Ｉの内
径（ｄ）け１１闘であった。すなわち、この連通孔０４
）の内径（ｄ）け脚部α＋１（１２のカラス管内径（Ｄ
）に対して約０．’７３　Ｄに成っている。従って、連
通孔（１４１周縁の接合部錦のカラス肉厚（ＴＩ　）（
Ｔ２）　は、ガラス管内径（Ｄ）より縮径した分たけ特
に（Ｘ−Ｘ）軸の方向の肉厚（Ｔ２）の薄肉化が抑制さ
、７１．、（Ｙ−Ｙ　）軸方向の肉厚（Ｔ１）　との差
が小さくなる。The width (wait) was 33.5 mm, and the inner diameter (d) of the communicating hole I was 11 mm.In other words, this communicating hole 04
) inner diameter (d)
) to about 0. '73 D. Therefore, the thickness (TI) of the joint brocade around the communication hole (141) (
T2) suppresses thinning of the wall thickness (T2) in the direction of the (X-X) axis by the amount reduced from the glass tube inner diameter (D), 71. , (Y-Y) The difference between the wall thickness (T1) in the axial direction becomes smaller.

また１脚部＋１１＋０２のガラス管内径（Ｄ）　＆こ対
して、連通孔■径（ｄ）を小さくＬ（Ｔ１）　と（Ｔ２
）の差を少なくした結果金型（２）で成形する際（Ｙ−
Ｙ）軸方向と。In addition, the inner diameter (D) of the glass tube of 1 leg + 11 + 02 is
) As a result of reducing the difference in (Y-
Y) axial direction.

（Ｘ−Ｘ）軸方向のカラス肉の冷却速度も近似する。The cooling rate of crow meat in the (X-X) axis direction is also approximated.

このため接合部（１３１が固化する前（Ｙ−Ｙ）軸方向
の肉厚（Ｔ１）部分より（Ｘ−Ｘ）軸方向へのカラス肉
の移動も可能となり両軸方向（Ｙ−Ｙ）。Therefore, before the joint (131) solidifies, it is possible to move the crow meat in the (X-X) axis direction from the thick (T1) portion in the (Y-Y) axis direction, so that it can move in both axial directions (Y-Y).

（Ｘ−Ｘ）の肉厚（Ｔ１）（Ｔ２）の差はより小さくな
る。The difference between the wall thicknesses (T1) and (T2) of (X-X) becomes smaller.

この実施例のものと、一方連通孔（１４１は脚部（ＩＩ
＋０２のカラス管内径（１５ｍＭ）と同径な従来のもの
両者を比較し連通孔■周縁のガラス肉ｈ−（ＴＩ　）（
Ｔ２）を比較したところ、この発明によるものは最大肉
厚と最小肉厚の比が１＝０８であったのに対し。In this example, one communication hole (141 is the leg part (II)
Comparing the +02 glass tube inner diameter (15mM) and the conventional one with the same diameter, we compared the glass wall around the communication hole h-(TI) (
When T2) was compared, the ratio of maximum wall thickness to minimum wall thickness was 1=08 in the one according to the present invention.

従来の連１１１１孔（１イ）紮イー１するイ）のは１：
０５であった′。Conventional series 1111 hole (1) ligature 1) is 1:
It was 05'.

また連通孔内径（ｄ）を１１ｍｍにしたこの実施例のも
のと、上記し７：ｙ　従来のイ、の両者のＵ字状カラス
管を使用しラング治−作りｌｔ、“ｆ性をｎ”；Ｉべた
ところ、ランプの−）Ｙ；出力（ｌ川）Ｑ」この実施例
によるランプの方か３％優１１でいた。これｔよ、連通
孔（１４＋の内径（ｄ）が小さく乙Ｃつノご分たけ連通
孔α４）を通る放′１↓１アークの１１月ツカ３′山、
棒（３）から遠さかり、Ｕ字状カラス管（１）の全品（
川を変えｌｊいても陽光杆長が長くなったことにＪ：る
。In addition, we made a rung jig using both the U-shaped crow tube of this embodiment, in which the internal diameter (d) of the communication hole was 11 mm, and the conventional one described above. The lamp according to this example was 3% superior in terms of -)Y;output (l river)Q of the lamp. This is t, the November Tsuka 3' peak of the radial '1↓1 arc passing through the communicating hole (the inner diameter (d) of 14+ is small and the communication hole α4),
Farther away from the rod (3), the entire U-shaped crow tube (1) (
Even if we changed the river, the length of sunlight became longer.

本発明者等ｔ、１さらに、上記実Ｍ１１例において夫々
バーナー０１１の炎Ｌ１径を変えるとともに、金型Ｇ’
２の内ｆ１１９形状葡変オーＣ，１ｌｊ）Ｌｆ１孔（ｌ
沿の径（ｄ）を上記実施例の径（ｄｌ１１ゴク（約（１
，７３Ｄ、）　よりざらに小さくしたところ、径（ｄ）
？ｒ：小さくするにつ第１．連通孔α４）周縁の肉厚の
最大１°ＸＢ　（’ｈ　）　とＩ＋手小郡（Ｔ２）の比
は小さくなるが９脚？ＸＩＬ　（ｌ　ＩＩ　（ｌｊのカ
ラス管内径（Ｄ）　Ｋ対してＤ／２　を超えて小’ｃ”
＜　＜　１．Ｘると周縁全体が厚肉となり・、シｘ−が
つで歪除去がｉｌｌ′Ｌ　＜　ｆ、ｒるなと新にな製造
上の間１．１ハが３・１つた。また、この程度以上に連
通孔０４）を、ｊ、ｌｌ＋径にするとｆ５−シかに１４
光柱長は長＜ｉｒるが、放電抵抗が過度に大きくなり特
にランプの始動″市川が高くなるなどの問題もあった。The inventors of the present invention further changed the diameter of the flame L1 of the burner 011 in the above actual M11 example, and also changed the diameter of the flame L1 of the burner 011, and
f119 shape of 2, 1lj) Lf1 hole (l
The diameter (d) along the axis is the diameter (dl11 goku) of the above example (approximately (1
,73D,), the diameter (d)
? r: First, to make it smaller. Although the ratio of maximum wall thickness of the communication hole α4) periphery of 1° XIL (l II (lj inner diameter (D) is smaller than D/2 for K)
<< 1. When X, the entire periphery becomes thick, and the new manufacturing process, 1.1H, becomes 3.1 when the distortion is removed by ill'L < f, r. Moreover, if the communicating hole 04) is made to have a diameter of j, ll + more than this, f5-shikani 14
Although the length of the light column is long, there are also problems such as the discharge resistance being excessively large, and especially the starting time of the lamp becoming high.

なお、Ｃの実Ｊｊｉ［ｉ例では２ＩＩｌ！ｌｌツカラス
’＃　ａｌｌ　（１２Ｑ直接接合して得たＵ字状管につ
いて記述したが、特にこのようなＵ字状管に限定さ１１
るものではなく。Note that the actual Jji of C [2IIl in the i example! ll Tsukarasu'# all (12Q has been described about a U-shaped tube obtained by direct joining, but it is particularly limited to such a U-shaped tube 11
rather than something that

第６図に示すように、Ｕ字状’Ｒｆｌｌｋ２個とし、夫
々のＵ字状管（１）の一方の脚部０２同士の側部を直接
接合し、この接合部ｕ３に夫々のＵ字状管（１１ヲ連通
する連通孔ａ４１全形成したダブルＵ字状管０１にも適
用できるーそしてこのダブルＵ字状管ａａＢＨ＜７図に
示すように、内面に螢光体層（４１を被着するとともに
、夫々の脚部端（１１ｂＸ１２ｂ）　ｋセラミック端板
（７）でカラスフリット０１ｌｆｒ：介して気密に固着
し。As shown in Fig. 6, there are two U-shaped 'Rfllk, the sides of one leg 02 of each U-shaped tube (1) are directly joined, and each U-shaped 'Rfllk is connected to this joint u3. It can also be applied to the double U-shaped tube 01 in which the communication hole a41 that communicates with the tube (11) is fully formed.As shown in FIG. At the same time, each leg end (11bX12b) is airtightly fixed with a ceramic end plate (7) via a crow frit.

一方の脚部端（１１ｂ）に一対の１Ｍ、極（３）全内包
させた螢光ランプなどに適用できる。It can be applied to a fluorescent lamp in which a pair of 1M poles (3) are completely enclosed in one leg end (11b).

また、第８図に示すようにタフルＵ字状賀００をさらに
外管（４１で気密に閉塞したまうな二ｆＪ１’自構造の
螢）しランプ忙も適用できろう 〔発明の効果〕 以上説明したようにこの発明は、カラス管の連通孔同士
の周縁をｉｆｆ接接合し、その連通孔を辿る屈曲したｈ
シ市路を゛形成し１．：ものにおいて、連通孔の直径葡
ｄ、カラス管の内径をＤとしたとき。Furthermore, as shown in FIG. 8, it would be possible to further apply the lamp structure by making the Tuffle U-shaped card 00 into an outer tube (a self-structured firefly that is airtightly closed with 41). [Effects of the Invention] As explained above. As described above, this invention connects the peripheral edges of the communicating holes of the crow tube to each other, and creates a curved h that follows the communicating holes.
1. Form a city road. : In a product, when the diameter of the communicating hole is d, and the inner diameter of the crow tube is D.

Ｄ／２Ｇ、ｄ＜Ｃになるようにしたので、連通孔周縁の
カラス肉厚な均一にでき、接合部の強度を増すことがで
きる。したがってランプの製造歩留りが向上１−るとと
もに、＃品・１目軸性ｔＡめ得る効果を奏する。Since D/2G and d<C are satisfied, the thickness of the periphery of the communication hole can be made uniform, and the strength of the joint can be increased. Therefore, the manufacturing yield of the lamp is improved, and the effects of #1 product and 1st scale property are achieved.

４、図面のｌｒｉ’ｉ　Ｊ１！なＭ１２．間第１図およ
び第２図１１従来例全示し、第１図は輩ブＣランブクｒ
一部断■で示″１１［祝図、第２図は要部拡大１＋」ｌ
面図、第３図ないし第５図はこの発明の一実ｈａ１例火
・示し、第３図に：Ｆ　Ｕ字状管の一部η）［面斜視図
、ε１λ４図＆；ｌ　９．部拡大断面図、１４５図ｔＪ
工程図。4. Drawing lri'i J1! M12. Fig. 1 and Fig. 2 show all conventional examples.
Partially cut out ``11 [Congratulations map, Figure 2 is enlarged 1+'' l
The top views, FIGS. 3 to 5 show an example of the present invention, and FIG. 3 shows a part of a U-shaped tube. Enlarged sectional view, Figure 145 tJ
Process chart.

第６図１，１゛い（５，が、８図に夫々この７１１′、
明の他の実施例を示′１−もので　７．′ｌ’％　（ｉ
ｌｔ、［タフ用字状状誦の斜視図。Figure 6 shows 1 and 1' (5, but Figure 8 shows 711', respectively)
7. Other examples of the invention are shown below.7. 'l'% (i
lt, [Perspective view of the tough letter shape recitation.

第Ｔ図Ｃ」回タプルＵ字状’Ｆｒ　’ｌ：使用しに螢光
ランプの斜視図、自１．８図れ１同じくダブルＵ字状管
を使用した二沖宥１１’Ｔ　：Ａ１１の螢光ランプの斜
視図である、は１中、（１）はガラス管、　（ＩＩｌｆ
１２は脚部、（ＩＪは接合部。Figure T: U-shaped tube 'Fr' l: Perspective view of a fluorescent lamp in use. It is a perspective view of a light lamp, (1) is a glass tube, (IIlf
12 is the leg, (IJ is the joint.

０４）は連通孔。04) is a communicating hole.

なお、各図中回−１？９号は同一まムーは、１１１当部
分を示す、 代理人　大　岩　増　第４１゜ −第　６　図 ゝ１４ 第　７　図In addition, the numbers 1 to 9 in each figure are the same, and the numbers 111 and 111 are the same.

Claims (1)

【特許請求の範囲】 ｆｌｌ　互いのカラス管に形成した連通孔同士の周縁を
直接接合し、その連通孔を通る屈曲した放電路を形成し
たものにおいて、連通孔の直径をｄ。 カラス管の内径をＤとしたとき、Ｄ／２≦ｄ、（Ｄなる
関係を満足していることを特徴とする低圧放電ランプ。 （２）　カラス管１ｒ、ＬＵ字状管とし、このＵ字状層
を２個配置−るととも顛各カラス管の一方の脚部の端部
に互に「ｊ接接合さ１１た連通孔を設けたことを特徴と
する（ｒ４ｒ許拍求の範囲第１項記載の低圧放電ランプ
６ （３）　カラス９゛υ、［外部に対して気密であること
を特徴とし７７　’Ｆ’　２１請求の岬、間第１項まｋ
は第２項記載の低圧放電ランプ（・ （４）　カラス管は内部を気密空間とした外管に囲繞さ
１１ており、かつ外管内に導通する導通孔奮有している
ことを特徴とする特許請求の範囲＄１ｇＱ韮たは第２項
記載の低圧放電ランプ。[Claims] fll In a device in which the peripheral edges of communication holes formed in each of the crow tubes are directly joined to form a curved discharge path passing through the communication holes, the diameter of the communication hole is d. A low-pressure discharge lamp characterized by satisfying the relationship D/2≦d, (D, where the inner diameter of the glass tube is D. (2) The glass tube 1r is an LU-shaped tube, and this U-shaped It is characterized by the fact that it has two communicating holes which are connected to each other at the end of one leg of each crow tube. Low pressure discharge lamp 6 according to item 1.
is a low-pressure discharge lamp according to item 2 (4) The glass tube is surrounded by an outer tube with an airtight space inside, and has a conductive hole for conducting into the outer tube. A low-pressure discharge lamp according to claim 2 or claim 2.