JP3076739B2 - Ring fluorescent lamp - Google Patents
Ring fluorescent lampInfo
- Publication number
- JP3076739B2 JP3076739B2 JP13133095A JP13133095A JP3076739B2 JP 3076739 B2 JP3076739 B2 JP 3076739B2 JP 13133095 A JP13133095 A JP 13133095A JP 13133095 A JP13133095 A JP 13133095A JP 3076739 B2 JP3076739 B2 JP 3076739B2
- Authority
- JP
- Japan
- Prior art keywords
- annular
- electrode
- fluorescent lamp
- ring
- side end
- 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
- Vessels And Coating Films For Discharge Lamps (AREA)
- Common Detailed Techniques For Electron Tubes Or Discharge Tubes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、複数本の環状管を同一
平面上・同心円状に配置した環形蛍光ランプに関するも
のである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an annular fluorescent lamp having a plurality of annular tubes arranged concentrically on the same plane.
【０００２】[0002]
【従来の技術】従来、住宅照明を中心として環状蛍光ラ
ンプが広く用いられている。特に、高出力を得るため
に、２本以上の環状蛍光ランプを段違いに配置したもの
が使用されており、また、このような環状蛍光ランプは
専用の照明器具に取り付けられて使用されている。した
がって、このような照明器具は厚形で大形のものとなり
経済的でなく、かつ器具デザインの面からも自由度が制
約されるなどの問題がある。さらに、２本以上の環状蛍
光ランプと同等の高出力を得られる環状蛍光ランプ１本
を使用した場合においても、環状蛍光ランプ自身が大型
化するとともに、照明器具も大型化してしまい、経済
面、デザイン面でも上記と同様の問題が生じる。2. Description of the Related Art Conventionally, annular fluorescent lamps have been widely used mainly for residential lighting. In particular, in order to obtain a high output, an arrangement in which two or more annular fluorescent lamps are arranged stepwise is used, and such an annular fluorescent lamp is used by being attached to a dedicated lighting fixture. Therefore, there is a problem that such a lighting fixture is thick and large, which is not economical, and that the degree of freedom is restricted in terms of the fixture design. Furthermore, even when one annular fluorescent lamp capable of obtaining a high output equivalent to two or more annular fluorescent lamps is used, the annular fluorescent lamp itself becomes large, and the lighting equipment also becomes large. The same problem as described above occurs in the design.
【０００３】[0003]
【発明が解決しようとする課題】発明者等は、このよう
な従来の環状蛍光ランプの問題点を解決するために、特
に、２本のコンパクトな環状管を同一平面上、同心円状
に配置して、かつ、それぞれの環状管をブリッジ接合に
よって相互に連結して、内部に一本の放電路を形成した
環形蛍光ランプ（特開平２−６１９５６号公報、特開平
６−２０３７９８号公報）について種々検討した。SUMMARY OF THE INVENTION In order to solve such a problem of the conventional annular fluorescent lamp, the inventors have particularly arranged two compact annular tubes concentrically on the same plane. In addition, various types of ring-shaped fluorescent lamps (Japanese Patent Application Laid-Open Nos. Hei 2-61965 and Hei 6-203798) in which each annular tube is connected to each other by a bridge junction to form a single discharge path therein. investigated.
【０００４】その結果、このような２本の環状管の非電
極側端部をいわゆるブリッジ技術により接合した環形蛍
光ランプでは、従来の環状蛍光ランプに比べて、環円周
に沿って電極封着部を含めた非発光部面積、すなわち、
図８に示す距離Ｋが大きくなり、口金を設けた場合にお
いても、ランプの環円周に沿った配光特性が悪くなり、
かつ、口金が大きくなるのでデザイン面でも問題である
ことがわかった。[0004] As a result, in the ring-shaped fluorescent lamp in which the non-electrode-side ends of the two annular tubes are joined by a so-called bridge technique, the electrodes are sealed along the ring circumference as compared with the conventional annular fluorescent lamp. Non-light-emitting area including the part, that is,
Even when the distance K shown in FIG. 8 is increased and a base is provided, the light distribution characteristics along the ring circumference of the lamp deteriorate,
In addition, the size of the base became large, which proved to be a problem in terms of design.
【０００５】さらに、ランプ形状がコンパクトである上
に、ランプは比較的高負荷で点灯されるので、必然的に
水銀蒸気圧を決める発光管内の最冷点温度が最適領域４
０〜５０℃より上昇して、ランプ光束が蛍光ランプとし
て基本的に実現可能な最大値よりも低下してしまう。ま
た、上記の非発光部面積が大きくなるのも、ランプ光束
を低下させるひとつの要因である。Furthermore, since the lamp shape is compact and the lamp is operated with a relatively high load, the cold spot temperature in the arc tube, which necessarily determines the mercury vapor pressure, is in the optimum range.
When the temperature rises from 0 to 50 ° C., the lamp luminous flux falls below the maximum value basically achievable as a fluorescent lamp. In addition, the increase in the area of the non-light-emitting portion is one of the factors for reducing the lamp light flux.
【０００６】本発明は、上記の非発光面積を可能なかぎ
り縮小し、かつランプ光束を最大値に保て、口金を小形
にでき、高光束、高効率で、配光特性のすぐれたコンパ
クトな環形蛍光ランプを提供することを目的とするもの
である。According to the present invention, the non-light-emitting area can be reduced as much as possible, the lamp luminous flux can be kept at the maximum value, the base can be made small, high luminous flux, high efficiency, and compact with excellent light distribution characteristics. An object of the present invention is to provide a ring-shaped fluorescent lamp.
【０００７】[0007]
【０００８】[0008]
【課題を解決するための手段】本発明の環形蛍光ランプ
は、環径が異なる２本の環状管が同一平面上かつ同軸状
に設けられ、前記複数本の環状管が接合部によって接合
された環形バルブを有し、前記環形バルブの内部に最外
側の環状管の一端部に設けた電極から最内側の環状管の
一端部に設けた電極に至る１本の放電路が形成されてお
り、前記環形バルブがモールド成型により一体成型さ
れ、前記接合部内の電極側端部から前記最外側の環状管
内の非電極側最先端部に至る最大距離をＬ1（ｍｍ）、
前記接合部内の電極側端部から前記最内側の環状管内の
非電極側最先端部に至る最大距離をＬ2（ｍｍ）とした
とき、最大距離Ｌ1は最大距離Ｌ2よりも長く、かつ、前
記最外側の環状管の電極側端部を、放電路長が伸びる方
向へ偏位させ、前記最内側の環状管よりも環状管長を長
い構成を有する。According to the present invention, there is provided an annular fluorescent lamp in which two annular tubes having different ring diameters are provided on the same plane and coaxially, and the plurality of annular tubes are joined by a joint. It has a ring-shaped bulb, and one discharge path is formed inside the ring-shaped bulb from an electrode provided at one end of the outermost annular tube to an electrode provided at one end of the innermost annular tube, The annular valve is integrally molded by molding, and a maximum distance from an electrode side end portion in the joint portion to a non-electrode side foremost portion in the outermost annular tube is L 1 (mm),
When the maximum distance leading to the non-electrode side cutting edge portion of the innermost annular tube from the electrode side end portion in the joint was L 2 (mm), the maximum distance L 1 is rather long than the maximum distance L 2, And before
The electrode end of the outermost annular tube should be
And the length of the annular pipe is longer than that of the innermost annular pipe.
It has a different configuration.
【０００９】[0009]
【作用】かかる構成により、各環状管の電極から非電極
側先端部まで放電発光を得ることができるので、非発光
部面積が縮小して配光特性が向上する。また、Ｌ1＞Ｌ2
を満足するモールド成型の形状を採用することによって
非発光部面積を一層縮小することができる。さらに、接
合部の形状を最適化することによって、非電極側端部内
に最冷点個所を形成でき環形蛍光ランプ内の水銀蒸気圧
を、最大ランプ光束が得られる最適領域となるように制
御することができる。With this configuration, discharge light emission can be obtained from the electrode of each annular tube to the tip portion on the non-electrode side, so that the area of the non-light emitting portion is reduced and light distribution characteristics are improved. Also, L 1 > L 2
The area of the non-light emitting portion can be further reduced by adopting a mold shape satisfying the above condition. Furthermore, by optimizing the shape of the joint, the coldest spot can be formed in the non-electrode side end, and the mercury vapor pressure in the ring-shaped fluorescent lamp is controlled so as to be an optimal region where the maximum lamp luminous flux can be obtained. be able to.
【００１０】[0010]
【実施例】以下、本発明の実施例を図を用いて説明す
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings.
【００１１】図１および図２に示す本発明の第１の実施
例である環形蛍光ランプは、環径が異なる２本の環状管
１，２が同一平面上かつ同軸状に設けられ、環状管１，
２が接合部７によって接合された環形バルブ３を有して
いる。環状管１，２の内表面には希土類蛍光体４が塗布
されており、管内には余剰の水銀と緩衝ガスとしてアル
ゴン，ネオンなどの希ガス２００〜５００Ｐａが封入さ
れている。なお、水銀としては亜鉛−水銀などのアマル
ガム合金として封入してもよい。環状管１，２の管外径
は１４ｍｍ、最外側の環状管１の環外径は１５０ｍｍ、
最内側の環状管２の環内径は９０ｍｍとコンパクトな形
状であり、ランプ入力２５Ｗで点灯される。環形バルブ
３はモールド成型により一体成型されている。環状管
１，２の一端部には電極５，６がそれぞれ設けられてい
る。環状管１，２の他端部は、モールド成形により接合
された接合部７が形成され、この接合部７によって環状
管１，２の他端部同士が接合されている。環形バルブ３
の内部には、最外側の環状管１の一端部に設けた電極５
から最内側の環状管２の一端部に設けた電極６に至る１
本の放電路が形成されている。また、接合部７（図２
中、範囲Ａ）に最冷点個所が形成されている。The annular fluorescent lamp according to the first embodiment of the present invention shown in FIGS. 1 and 2 has two annular tubes 1 and 2 having different ring diameters provided on the same plane and coaxially. 1,
2 has an annular valve 3 joined by a joint 7. The inner surfaces of the annular tubes 1 and 2 are coated with a rare-earth phosphor 4, and the tubes are filled with surplus mercury and a rare gas such as argon or neon as a buffer gas of 200 to 500 Pa. The mercury may be sealed as an amalgam alloy such as zinc-mercury. The outer diameter of the annular pipes 1 and 2 is 14 mm, the outer diameter of the outermost annular pipe 1 is 150 mm,
The inner diameter of the innermost annular tube 2 has a compact shape of 90 mm, and is turned on at a lamp input of 25 W. The annular valve 3 is integrally formed by molding. Electrodes 5 and 6 are provided at one end of the annular tubes 1 and 2, respectively. The other ends of the annular tubes 1 and 2 are formed with a joint 7 joined by molding, and the other ends of the annular tubes 1 and 2 are joined by the joint 7. Ring valve 3
The electrode 5 provided at one end of the outermost annular tube 1
1 to the electrode 6 provided at one end of the innermost annular tube 2
Book discharge paths are formed. Also, the joint 7 (FIG. 2)
In the middle and the range A), the coldest spot is formed.
【００１２】接合部７の電極側先端部Ｐから非電極側先
端部Ｔまでの最大距離Ｌ1を１７ｍｍ、また最内側の環
状管２の電極側端部と接合部７との最短距離Ｂは１８ｍ
ｍとしている。The maximum distance L 1 from the electrode end P to the non-electrode end T of the joint 7 is 17 mm, and the shortest distance B between the electrode end of the innermost annular tube 2 and the joint 7 is 18m
m.
【００１３】本実施例の環状蛍光ランプを、５０ｋＨｚ
インバータ回路で２５Ｗ点灯すると、色温度３０００Ｋ
の光色で１６３０ｌｍという高い光束が得られた。この
とき、ランプの温度測定を行ったところ、ランプの接合
部７の非電極側先端部Ｔに最冷点個所が形成されてお
り、その温度は室温２５℃，２５Ｗ点灯時においてほぼ
最大光束値が得られる最適水銀蒸気圧に相当するところ
の４５℃の値であることがわかった。The annular fluorescent lamp of this embodiment is operated at 50 kHz.
When the inverter circuit turns on 25W, the color temperature is 3000K
With this light color, a high luminous flux of 1630 lm was obtained. At this time, when the temperature of the lamp was measured, the coldest spot was formed at the non-electrode end T of the joint 7 of the lamp, and the temperature was almost the maximum luminous flux value when the room was turned on at 25 ° C. and 25 W. Was found to be a value of 45 ° C. corresponding to the optimum mercury vapor pressure obtained.
【００１４】一方、図８に示すブリッジ技術により環状
管１と環状管２とを非電極側端部近傍で接合した従来の
環形蛍光ランプの特性を測定したところ、最冷点個所が
形成されるブリッジ接合部から非電極側先端部間の最大
距離ＬAは１３ｍｍで、その他の寸法は本実施例の環形
蛍光ランプと同じ数値を採用している。この試作ランプ
を上記と同様に５０ｋＨｚ，２５Ｗ入力で点灯したとこ
ろ、ランプ光束１４９０ｌｍの値を示した。これによっ
て、本実施例の環形蛍光ランプは従来の環形蛍光ランプ
と比して、光束が１４０ｌｍ、約９．５％高いことが確
認された。これは、従来の環形蛍光ランプではブリッジ
接合部の発光が極めて低いのに対して、本実施例の環形
蛍光ランプではモールド成型によって接合された接合部
７の発光が十分高く、また、環状管１，２の有効発光長
が長くなったからである。On the other hand, when the characteristics of a conventional annular fluorescent lamp in which the annular tube 1 and the annular tube 2 are joined in the vicinity of the non-electrode end by the bridge technique shown in FIG. 8 are measured, the cold spot is formed. the maximum distance L a between the non-electrode side tip from the bridge junction at 13 mm, other dimensions may employ the same number as the circular fluorescent lamp of this embodiment. When this prototype lamp was lit at 50 kHz and 25 W input in the same manner as described above, the value of the lamp luminous flux was 1490 lm. As a result, it was confirmed that the ring-shaped fluorescent lamp of this example had a luminous flux of 140 lm, which was about 9.5% higher than that of the conventional ring-shaped fluorescent lamp. This is because while the light emission at the bridge junction is extremely low in the conventional ring-shaped fluorescent lamp, the light emission at the junction 7 joined by molding is sufficiently high in the ring-shaped fluorescent lamp of the present embodiment, and the annular tube 1 , 2 has a longer effective light emission length.
【００１５】次に、本発明の第２の実施例である環形蛍
光ランプについて説明する。図３に示すように、本発明
の第２の実施例である環形蛍光ランプでは、接合部７の
電極側端部Ｐから最外側の環状管１の非電極側先端部Ｔ
1までの最大距離Ｌ1と、接合部７の電極側端部Ｐから最
内側の環状管２の非電極側先端部Ｔ2までの最大距離Ｌ2
を異ならせている。この場合Ｌ1＝１６ｍｍ，Ｌ2＝１０
ｍｍとしている。Next, a ring-shaped fluorescent lamp according to a second embodiment of the present invention will be described. As shown in FIG. 3, in the ring-shaped fluorescent lamp according to the second embodiment of the present invention, from the electrode-side end P of the joint 7 to the non-electrode-side tip T of the outermost annular tube 1.
The maximum distance L 1 to 1, the maximum distance L 2 from the electrode side end portion P of the joint portion 7 to the non-electrode side tip T 2 of the innermost annular tube 2
Are different. In this case, L 1 = 16 mm, L 2 = 10
mm.
【００１６】本実施例の環形蛍光ランプを上記実施例と
同様に５０ｋＨｚ，２５Ｗ入力で測定したところ、ラン
プ光束は１６９０ｌｍの値を示した。すなわち、本実施
例の環形蛍光ランプは、上記第１の実施例の環形蛍光ラ
ンプと比して、光束がさらに６０ｌｍ、約３．６％高い
ことがわかった。これは、上記第１の実施例の環形蛍光
ランプに比べて環状管１，２の電極間距離、即ち有効発
光長をさらに長くすることができたためである。また、
ランプ光束を向上することができたとともに、本実施例
では非発光部面積が一層縮小しており、縮小した分だけ
環円周に沿った配光特性が良好となり、ランプデザイン
面でも好ましいものになっている。When the ring-shaped fluorescent lamp of this embodiment was measured at 50 kHz and 25 W input in the same manner as in the above embodiment, the lamp luminous flux showed a value of 1690 lm. That is, it was found that the ring-shaped fluorescent lamp of the present embodiment had a luminous flux of further 60 lm, approximately 3.6% higher than that of the ring-shaped fluorescent lamp of the first embodiment. This is because the distance between the electrodes of the annular tubes 1 and 2, that is, the effective light emission length, could be further increased as compared with the annular fluorescent lamp of the first embodiment. Also,
In addition to being able to improve the lamp luminous flux, in the present embodiment, the area of the non-light emitting portion is further reduced, and the light distribution characteristics along the ring circumference are improved by the reduced amount, which is preferable in terms of lamp design. Has become.
【００１７】次に本発明の第３の実施例である環形蛍光
ランプについて説明する。図４に示す本発明の第３の実
施例である環形蛍光ランプは、上記第２の実施例に関し
て、最外側の環状管１の電極側端部を最内側の環状管２
の電極側端部から距離Ｓだけ偏位させ、有効発光長を長
くしたものである。なお、他の構成は上記各実施例と同
様である。Next, a ring-shaped fluorescent lamp according to a third embodiment of the present invention will be described. The annular fluorescent lamp according to the third embodiment of the present invention shown in FIG. 4 is different from the second embodiment in that the end of the outermost annular tube 1 on the electrode side is connected to the innermost annular tube 2.
Is shifted from the electrode side end by a distance S to increase the effective light emission length. The other configuration is the same as in each of the above embodiments.
【００１８】この距離Ｓの偏位の光束向上に対する効果
を調べるために、本実施例の環形蛍光ランプと、図３に
示したように、環状管１の電極５と環状管２の電極６と
を並行させて配置した上記第２の実施例の環形蛍光ラン
プとを試作して測定を行った。In order to examine the effect of the deviation of the distance S on the improvement of the luminous flux, the ring-shaped fluorescent lamp of the present embodiment and the electrode 5 of the annular tube 1 and the electrode 6 of the annular tube 2 as shown in FIG. Were manufactured in parallel with the ring-shaped fluorescent lamp of the second embodiment, which was arranged in parallel, and the measurement was performed.
【００１９】その結果、本実施例のランプは、５０ｋＨ
ｚ，２５Ｗ点灯で１７３０ｌｍの光束値を示した。した
がって、最外側の環状管１の電極端部を距離Ｓだけ偏位
させたことによって、上記第２の実施例の環形蛍光ラン
プよりも光束を４０ｌｍ上昇することができ、上記第１
の実施例と比較した場合、光束を１００ｌｍ上昇するこ
とができる。なお、この場合においても、非発光面積を
縮小でき、その分だけ配光特性を向上できる。As a result, the lamp of this embodiment has a
It showed a light flux value of 1730 lm at z, 25 W lighting. Therefore, by deflecting the electrode end of the outermost annular tube 1 by the distance S, the luminous flux can be increased by 40 lm compared to the annular fluorescent lamp of the second embodiment, and the first first embodiment can be used.
The light flux can be increased by 100 lm, as compared with the embodiment of FIG. In this case as well, the non-light emitting area can be reduced, and the light distribution characteristics can be improved accordingly.
【００２０】次に本発明の第４の実施例である環形蛍光
ランプについて説明する。本実施例では、上記第３の実
施例の環形蛍光ランプ（図４参照）と同様の構造を採用
し、ランプ入力６０Ｗのコンパクトな環形蛍光ランプを
用いたものである。各寸法は、環状管１，２の管外径２
０ｍｍ、環状管１の環外径２４０ｍｍ、環状管２の環内
径１５５ｍｍ、接合部７における最大距離Ｌ1を２３ｍ
ｍ、Ｌ2を１６ｍｍ、最内側の環状管２の両端部の距離
Ｂを２２ｍｍとしている。この環形蛍光ランプを５０ｋ
Ｈｚのインバータ回路により入力６０Ｗで点灯すると、
４７３０ｌｍという高い光束値を得ることができた。Next, a ring-shaped fluorescent lamp according to a fourth embodiment of the present invention will be described. In this embodiment, a structure similar to that of the ring-shaped fluorescent lamp of the third embodiment (see FIG. 4) is employed, and a compact ring-shaped fluorescent lamp having a lamp input of 60 W is used. Each dimension is the outer diameter 2 of the annular pipes 1 and 2.
0 mm, the outer ring diameter of the annular pipe 1 is 240 mm, the inner diameter of the annular pipe 2 is 155 mm, and the maximum distance L 1 at the joint 7 is 23 m.
m, and the L 2 16 mm, the distance B of the two ends of the annular pipe 2 of the innermost and 22 mm. This ring-shaped fluorescent lamp is 50k
When turned on at an input of 60 W by the inverter circuit of Hz,
A high luminous flux value of 4730 lm could be obtained.
【００２１】なお、上記各本実施例のランプに関して、
ランプ寸法、特に最大距離Ｌ1を種々変えた環形蛍光ラ
ンプの光束値を測定したところ、最大光束値が得られる
最大距離Ｌ1は、環状管の外径をｄとすると、０．７ｄ
≦Ｌ1≦１．５ｄの範囲にあることがわかった。また、
上記第３の実施例の環形蛍光ランプに関連して最外側環
状管１の非電極側先端部Ｔに最冷点個所を確実に形成す
る最大距離Ｌ1とＬ2の関係について調べたところ、Ｌ1
≧１．３Ｌ2を満足すればよいことがわかった。Incidentally, with respect to the lamp of each of the above embodiments,
Lamp dimensions, was particularly measured light flux values of variously changing the circular fluorescent lamp the maximum distance L 1, the maximum distance L 1 to the maximum flux value is obtained, when the outer diameter of the annular tube and d, 0.7d
≦ L 1 ≦ 1.5d. Also,
Was examined the relationship between the maximum distance L 1 and L 2 to reliably form the coolest point locations in said third non-electrode side tip T of the embodiment of the circular fluorescent lamp related to the outmost annular tube 1, L 1
It was found that it was only necessary to satisfy ≧ 1.3L 2 .
【００２２】また、モールド成型による接合部の形状と
しては、例えば図５に示すような形状のものでもよい。
すなわち、あくまでも接合部の非電極側端部Ｔの最冷点
温度を、ランプ光束最大となる最適領域に保つことが基
本的な必要条件であり、これは主に接合部の最大距離の
寸法によって規定されるといえる。Further, the shape of the joint portion formed by molding may be a shape as shown in FIG. 5, for example.
That is, the basic requirement is to keep the coldest point temperature of the non-electrode side end T of the joint in the optimal region where the lamp luminous flux becomes maximum, and this is mainly determined by the maximum distance dimension of the joint. It can be said that it is regulated.
【００２３】また、上記各実施例の環形蛍光ランプに口
金を取り付ける場合、環形バルブの接合部内の最冷点個
所となる非電極側先端部Ｔの温度が最適領域をはずれて
過度に上昇することを防ぐために、図６に示すように、
非電極側先端部Ｔを露出させるように環形バルブの電極
側端部を包んだ口金８か、図７に示すように、非電極側
先端部Ｔが外気と通じる通気口１０を設けた口金９を用
いればよい。When the base is attached to the ring-shaped fluorescent lamp of each of the above embodiments, the temperature of the non-electrode-side tip portion T, which is the coldest spot in the joint portion of the ring-shaped bulb, may deviate from the optimum region and excessively rise. In order to prevent this, as shown in FIG.
A base 8 wrapping the electrode-side end of the annular valve so as to expose the non-electrode-side tip T, or a base 9 provided with a vent 10 through which the non-electrode-side tip T communicates with the outside air, as shown in FIG. May be used.
【００２４】上記したように口金を設けた場合、口金に
よる光束値の低下を、口金を有しない裸ランプの光束値
から３％以下に抑えることができた。一方、図９に示す
ように、非電極側先端部Ｔを口金で覆った場合、ランプ
の光束は裸ランプの光束に比べて最大１７％も低下する
ことがわかった。When the base was provided as described above, the decrease in the luminous flux value due to the base could be suppressed to 3% or less of the luminous flux value of the bare lamp having no base. On the other hand, as shown in FIG. 9, it was found that when the non-electrode-side tip T was covered with a base, the luminous flux of the lamp was reduced by up to 17% as compared with the luminous flux of the bare lamp.
【００２５】[0025]
【発明の効果】以上述べたように、本発明は、ランプ光
束が高く、配光特性が良好で、かつデザインもすぐれた
コンパクトな高効率・高出力の環形蛍光ランプを提供す
ることができる。As described above, the present invention can provide a compact, high-efficiency, high-output ring-shaped fluorescent lamp having a high lamp luminous flux, good light distribution characteristics, and excellent design.
【図１】本発明の第１の実施例である環形蛍光ランプの
一部切欠正面図FIG. 1 is a partially cutaway front view of a ring-shaped fluorescent lamp according to a first embodiment of the present invention.
【図２】同じく要部切欠拡大正面図FIG. 2 is an enlarged front view of a cutout of a main part.
【図３】本発明の第２の実施例である環形蛍光ランプの
要部切欠拡大正面図FIG. 3 is an enlarged front view of a main part of a ring-shaped fluorescent lamp according to a second embodiment of the present invention.
【図４】本発明の第３の実施例の環形蛍光ランプの要部
切欠拡大正面図FIG. 4 is a cutaway enlarged front view of a main part of a ring-shaped fluorescent lamp according to a third embodiment of the present invention.
【図５】モールド成型による接合部の他の形状を示す図FIG. 5 is a diagram showing another shape of a joint portion by molding.
【図６】口金の取付様態および口金形状を説明するため
の図FIG. 6 is a view for explaining a mounting state of a base and a base shape;
【図７】口金の取付様態および口金形状を説明するため
の図FIG. 7 is a view for explaining a manner of mounting the base and a shape of the base.
【図８】従来の環形蛍光ランプの要部切欠拡大正面図FIG. 8 is a cutaway enlarged front view of a main part of a conventional annular fluorescent lamp.
【図９】同じく口金の取付様態および口金形状を説明す
るための図FIG. 9 is a view for explaining the manner of mounting the base and the shape of the base.
１，２ 環状管 ３ 環形バルブ ５，６ 電極 ７ 接合部 ８，９ 口金 1, 2 Annular tube 3 Annular valve 5, 6 Electrode 7 Joint 8, 9 Base
───────────────────────────────────────────────────── フロントページの続き (72)発明者 奥野 郁弘 大阪府高槻市幸町１番１号 松下電子工 業株式会社内 (56)参考文献 特開 平６−203798（ＪＰ，Ａ) 特開 昭61−148759（ＪＰ，Ａ) 特開 昭58−93155（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 61/32 H01J 5/50 ──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Ikuhiro Okuno 1-1, Sachimachi, Takatsuki City, Osaka Prefecture Inside Matsushita Electronics Corporation (56) References JP-A-6-203798 (JP, A) JP-A Sho 61-148759 (JP, A) JP-A-58-93155 (JP, A) (58) Fields investigated (Int. Cl. 7 , DB name) H01J 61/32 H01J 5/50
Claims (4)
かつ同軸状に設けられ、前記複数本の環状管が接合部に
よって接合された環形バルブを有し、前記環形バルブの
内部に最外側の環状管の一端部に設けた電極から最内側
の環状管の一端部に設けた電極に至る１本の放電路が形
成されており、前記環形バルブがモールド成型により一
体成型され、前記接合部内の電極側端部から前記最外側
の環状管内の非電極側最先端部に至る最大距離をＬ
1（ｍｍ）、前記接合部内の電極側端部から前記最内側
の環状管内の非電極側最先端部に至る最大距離をＬ
2（ｍｍ）としたとき、最大距離Ｌ1は最大距離Ｌ2より
も長く、かつ、前記最外側の環状管の電極側端部を、放
電路長が伸びる方向へ偏位させ、前記最内側の環状管よ
りも環状管長を長くしたことを特徴とする環形蛍光ラン
プ。1. An annular valve having two annular pipes having different annular diameters are provided on the same plane and coaxially, and the plurality of annular pipes have an annular valve joined by a joint. One discharge path is formed from an electrode provided at one end of the outermost annular tube to an electrode provided at one end of the innermost annular tube, and the annular bulb is integrally molded by molding, and The maximum distance from the electrode side end in the joint to the non-electrode side foremost part in the outermost annular tube is L
1 (mm), the maximum distance from the electrode side end in the joint to the non-electrode side foremost part in the innermost annular tube is L
When the the 2 (mm), the maximum distance L 1 is rather long than the maximum distance L 2, and wherein the electrode side end portion of the outermost annular tube, release
Deviate in the direction in which the length of the circuit path extends, and move
A ring-shaped fluorescent lamp characterized by having a longer tube length .
管内の非電極側最先端部に至る最大距離をＬ1（ｍ
ｍ）、前記接合部内の電極側端部から最内側の環状管内
の非電極側最先端部に至る最大距離をＬ2（ｍｍ）とし
たとき、Ｌ1≧１．３Ｌ2を満足することを特徴とする請
求項１記載の環形蛍光ランプ。2. The maximum distance from the electrode side end in the joint to the non-electrode side foremost part in the outermost annular tube is L 1 (m
m), assuming that the maximum distance from the electrode-side end portion in the joint portion to the non-electrode-side foremost portion in the innermost annular tube is L 2 (mm), L 1 ≧ 1.3 L 2 is satisfied. The ring-shaped fluorescent lamp according to claim 1 , wherein:
れていることを特徴とする請求項１または請求項２に記
載の環形蛍光ランプ。3. A circular claim 1 or claim 2 in serial <br/> mounting the circular fluorescent lamp wherein the cap on the electrode side end portion of the valve is provided.
電極側端部を包囲し、かつ、少なくとも最外側の環状管
の非電極側端部が外気と通じるように設けられているこ
とを特徴とする請求項１ないし請求項３のいずれかに記
載の環形蛍光ランプ。4. The base surrounds the electrode-side end and the non-electrode-side end of the annular bulb, and at least the non-electrode-side end of the outermost annular tube is provided so as to communicate with the outside air. The ring-shaped fluorescent lamp according to any one of claims 1 to 3, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13133095A JP3076739B2 (en) | 1995-05-30 | 1995-05-30 | Ring fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13133095A JP3076739B2 (en) | 1995-05-30 | 1995-05-30 | Ring fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08329891A JPH08329891A (en) | 1996-12-13 |
| JP3076739B2 true JP3076739B2 (en) | 2000-08-14 |
Family
ID=15055431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13133095A Expired - Lifetime JP3076739B2 (en) | 1995-05-30 | 1995-05-30 | Ring fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3076739B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7285899B2 (en) | 2002-08-30 | 2007-10-23 | Toshiba Lighting & Technology Corporation | Fluorescent lamp having bent portions and its manufacturing method, and illuminating apparatus including the lamp |
-
1995
- 1995-05-30 JP JP13133095A patent/JP3076739B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08329891A (en) | 1996-12-13 |
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