JP3135492B2 - Ring fluorescent lamp - Google Patents
Ring fluorescent lampInfo
- Publication number
- JP3135492B2 JP3135492B2 JP07284787A JP28478795A JP3135492B2 JP 3135492 B2 JP3135492 B2 JP 3135492B2 JP 07284787 A JP07284787 A JP 07284787A JP 28478795 A JP28478795 A JP 28478795A JP 3135492 B2 JP3135492 B2 JP 3135492B2
- Authority
- JP
- Japan
- Prior art keywords
- annular
- lamp
- present
- fluorescent lamp
- tube
- 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)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、複数本の環状管が
連結され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 in which a plurality of annular tubes are connected.
【０００２】[0002]
【従来の技術】一般に、蛍光ランプは発光管長に比例し
て発光効率が高くなる。環形蛍光ランプは発光管長を長
くすると曲率が小さくなり、小形化が損なわれるため、
発光管長を長くすることには限界があった。そこで、発
光管長を長くしてなおかつ小形化を図ることのできるも
のとして、一端部に電極を有する曲率の異なる２本の環
状管を、３ｍｍ以上１５ｍｍ以下の間隙をもたせて、そ
れぞれの他端部において互いに連結した構造の蛍光ラン
プがある（特開平２−６１９５６号公報）。2. Description of the Related Art Generally, a fluorescent lamp has a higher luminous efficiency in proportion to the length of an arc tube. As the length of the arc tube becomes longer, the curvature becomes smaller and the miniaturization of the ring-shaped fluorescent lamp is impaired.
There is a limit to lengthening the arc tube length. In order to increase the length of the arc tube and to reduce the size, two annular tubes having electrodes at one end and having different curvatures are provided with a gap of 3 mm or more and 15 mm or less, and the other end of each is provided. (See Japanese Patent Application Laid-Open No. 2-61965).
【０００３】[0003]
【発明が解決しようとする課題】このような環形蛍光ラ
ンプでは、連結部は通常、管状であり、その内径は環状
管の内径よりも小さい。言い換えれば、連結部での電圧
降下は環状管部よりも大きく、したがって消費電力も大
きい。一方、連結部での発光効率は環状管部よりも小さ
くなる。また、連結部が長いほど曲率が大きい内側の環
状管内の放電路が短くなる。したがって、このような環
形蛍光ランプでは連結部が長いほど発光効率が低下する
ことになる。In such an annular fluorescent lamp, the connecting portion is usually tubular, and the inside diameter is smaller than the inside diameter of the annular tube. In other words, the voltage drop at the connection is greater than at the annular tube, and therefore the power consumption is higher. On the other hand, the luminous efficiency at the connecting portion is smaller than that of the annular tube portion. Further, the longer the connecting portion, the shorter the discharge path in the inner annular tube having a large curvature. Therefore, in such a ring-shaped fluorescent lamp, the longer the connecting portion, the lower the luminous efficiency.
【０００４】本発明の発明者の検討によると、２本の環
状管を３．０ｍｍ以上の間隙をもたせて連結した場合、
すなわち連結部を３．０ｍｍ以上の長さにすると、連結
部の長さと内側の環状管の放電路の長さに原因する発光
効率の低下が無視できないことが分かった。According to the study by the inventor of the present invention, when two annular pipes are connected with a gap of 3.0 mm or more,
In other words, it was found that when the length of the connecting portion was 3.0 mm or more, the decrease in luminous efficiency caused by the length of the connecting portion and the length of the discharge path of the inner annular tube could not be ignored.
【０００５】また、２本の環状管を３．０ｍｍ以上の間
隙をもたせて連結すると、連結部の強度が低下し、ラン
プ取り扱い時、特に連結部において損傷が生じ易いこと
も分かった。これは、環形蛍光ランプは、連結前に直管
状の管を環状管に熱によって成形する必要があり、この
環状管の成形時において環状管に歪等が生じ、しかもそ
の歪等が生じた部分に連結部を設けるので、ランプの強
度が低下してしまうのである。[0005] It has also been found that when two annular tubes are connected with a gap of 3.0 mm or more, the strength of the connecting portion is reduced, and damage is likely to occur at the time of handling the lamp, particularly at the connecting portion. This is because a ring-shaped fluorescent lamp requires a straight tube to be formed into an annular tube by heat before connection, and distortion and the like are generated in the annular tube during the formation of the annular tube. Since the connecting portion is provided in the lamp, the strength of the lamp is reduced.
【０００６】本発明は、このような問題を解決するため
になされたもので、発光効率が高く、かつランプ強度も
高い環形蛍光ランプを提供することを目的としている。[0006] The present invention has been made to solve such a problem, and an object of the present invention is to provide a ring-shaped fluorescent lamp having high luminous efficiency and high lamp intensity.
【０００７】[0007]
【課題を解決するための手段】本発明の環形蛍光ランプ
は、環径が異なる複数本の環状管が同軸状に設けられ、
前記複数本の環状管を連結部によって連結されて、最外
側の環状管の一端部に設けられ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一つの放電路が形成され
ており、隣接する前記環状管の間隙が１．０ｍｍ以上
３．０ｍｍ未満の範囲を満足する構成を有するものであ
る。A ring-shaped fluorescent lamp according to the present invention comprises a plurality of annular tubes having different ring diameters provided coaxially.
The plurality of annular tubes are connected by a connecting portion to form one discharge path from an electrode provided at one end of the outermost annular tube to an electrode provided at one end of the innermost annular tube. In this case, the gap between the adjacent annular tubes satisfies a range of 1.0 mm or more and less than 3.0 mm.
【０００８】この構成により、発光効率とランプ強度と
を高めた環形蛍光ランプが得られる。With this configuration, a ring-shaped fluorescent lamp having improved luminous efficiency and lamp intensity can be obtained.
【０００９】[0009]
【発明の実施の形態】本発明の請求項１に記載の発明
は、環径が異なる複数本の環状管が同軸状に設けられ、
前記複数本の環状管を連結部によって連結されて、最外
側の環状管の一端部に設けられ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一つの放電路が形成され
ており、隣接する前記環状管の間隙が１．０ｍｍ以上
３．０ｍｍ未満の範囲を満足する構成を有するので、従
来の環形蛍光ランプよりも発光効率を高くでき、かつラ
ンプ強度も向上する。DESCRIPTION OF THE PREFERRED EMBODIMENTS According to the first aspect of the present invention, a plurality of annular pipes having different ring diameters are provided coaxially.
The plurality of annular tubes are connected by a connecting portion to form one discharge path from an electrode provided at one end of the outermost annular tube to an electrode provided at one end of the innermost annular tube. Since the gap between the adjacent annular tubes satisfies the range of 1.0 mm or more and less than 3.0 mm, the luminous efficiency can be higher than that of the conventional annular fluorescent lamp, and the lamp strength can be improved.
【００１０】以下本発明の一実施の形態について図面を
用いて説明する。図１および図２に示すように、本発明
の一実施の形態である環形蛍光ランプ（以下、本発明品
Ａという）は、一端部に電極４を有する環状管１と、こ
の環状管１とは曲率、すなわち環径が異なり、かつ一端
部に電極４を有する環状管２とが同一平面上で、かつ同
心円上に位置するように配置されており、これら環状管
１と環状管２とはそれぞれの他端部において互いに連結
部３で連結されている。環状管１および環状管２の管外
径はそれぞれ２０ｍｍであり、これらの環状管１および
環状管２の内面には三波長域発光形の蛍光体が塗布され
ている。また、環状管１および環状管２の内部には４０
０Ｐａのアルゴンガスと１０ｍｇの水銀がそれぞれ封入
されている。環状管１および環状管２のそれぞれの一端
は電子放射物質を塗布した電極４を有するマウント６に
よって封止されている。また、環状管１および環状管２
のそれぞれの他端は閉塞されている。各電極４は口金５
を介して外部と電気的に接続されている。環状管１と環
状管２とは連結部３によって放電的に連結されているの
で管内には電極４間で１本の放電路を形成することがで
き、その放電路の長さは７３ｃｍである。また、環状管
１と環状管２との間隙Ｇを２．０ｍｍとしている。An embodiment of the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, a ring-shaped fluorescent lamp according to an embodiment of the present invention (hereinafter, referred to as a product A of the present invention) includes an annular tube 1 having an electrode 4 at one end, and an annular tube 1. Are arranged such that the annular pipes 2 having different curvatures, that is, ring diameters, and having electrodes 4 at one end thereof are located on the same plane and concentrically. The other end portions are connected to each other by a connection portion 3. The outer diameter of each of the annular tubes 1 and 2 is 20 mm, and the inner surface of each of the annular tubes 1 and 2 is coated with a three-wavelength band light emitting phosphor. Also, 40 is provided inside the annular pipes 1 and 2.
0 Pa of argon gas and 10 mg of mercury are sealed. One end of each of the annular tube 1 and the annular tube 2 is sealed by a mount 6 having an electrode 4 coated with an electron emitting material. Further, the annular pipe 1 and the annular pipe 2
Are closed at the other end. Each electrode 4 is a base 5
And is electrically connected to the outside through Since the annular tube 1 and the annular tube 2 are electrically connected by the connecting portion 3, one discharge path can be formed between the electrodes 4 in the tube, and the length of the discharge path is 73 cm. . The gap G between the annular pipe 1 and the annular pipe 2 is set to 2.0 mm.
【００１１】次に、本発明品Ａと同じ環外径を有する環
状管１を用い、この環状管１と環状管２との間隙Ｇを種
々変えた比較ランプＡ〜Ｃを作製し、本発明にかかる環
形蛍光ランプとこれら比較ランプとの発光効率およびラ
ンプ強度についてそれぞれ試験を行った。Next, using the annular tube 1 having the same outer ring diameter as that of the product A of the present invention, comparative lamps A to C in which the gap G between the annular tube 1 and the annular tube 2 was variously changed were manufactured. Were tested for the luminous efficiency and lamp strength of the ring-shaped fluorescent lamp and the comparative lamp.
【００１２】環状管１と環状管２との間隙Ｇを３．０ｍ
ｍとし、他の構造が本発明品Ａと同じである比較ランプ
Ａを作製した。なお、比較ランプＡの環状管１は本発明
品Ａの環状管１と同じものを使用しているので、内側の
環状管２の環外径は本発明品Ａに比べて２ｍｍ小さくな
っている。The gap G between the annular pipe 1 and the annular pipe 2 is 3.0 m.
m, and a comparative lamp A having the same other structure as the product A of the present invention was produced. Since the annular tube 1 of the comparative lamp A is the same as the annular tube 1 of the product A of the present invention, the outer ring diameter of the inner annular tube 2 is 2 mm smaller than that of the product A of the present invention. .
【００１３】これら本発明品Ａと比較ランプＡとを蛍光
ランプＦＬ４０用の点灯回路で点灯させ、発光効率を測
定した。その結果、本発明品Ａは比較ランプＡに比べ発
光効率が１．０％向上していることが確認できた。The product A of the present invention and the comparative lamp A were turned on by a lighting circuit for the fluorescent lamp FL40, and the luminous efficiency was measured. As a result, it was confirmed that the luminous efficiency of the product A of the present invention was improved by 1.0% as compared with the comparative lamp A.
【００１４】また、本発明品Ａと比較ランプＡとをそれ
ぞれ５本作製し、それらの連結部に２０ｋｇの圧縮力を
加えてランプ強度について試験した。その結果、本発明
品Ａは、５本とも連結部において破損は生じなかった
が、比較ランプＡは、５本中２本に破損が生じた。な
お、この２０ｋｇの圧縮力は、通常のランプ取り扱い時
に起こり得る最大の圧縮力の想定値である。Further, five lamps of the product A of the present invention and five comparative lamps A were produced, and a test was conducted on the lamp strength by applying a compressive force of 20 kg to the joint thereof. As a result, the product A of the present invention did not cause any damage in the connection portion of all five lamps, but the comparative lamp A caused damage in two of the five lamps. This 20 kg compression force is an assumed value of the maximum compression force that can occur during normal lamp handling.
【００１５】次に、本発明にかかる環形蛍光ランプとし
て、同様に環状管１と環状管２との間隙Ｇが１．０ｍｍ
である本発明品Ｂを作製し、一方、同様に環状管１と環
状管２との間隙Ｇが０．５ｍｍである比較ランプＢとを
作製した。なお、比較ランプＢの環状管２の環外径は本
発明品Ｂよりも１．０ｍｍ小さくなっている。Next, in the annular fluorescent lamp according to the present invention, similarly, the gap G between the annular tubes 1 and 2 is 1.0 mm.
Of the present invention B, and a comparative lamp B in which the gap G between the annular tube 1 and the annular tube 2 was 0.5 mm in the same manner. The outer diameter of the annular tube 2 of the comparative lamp B is smaller by 1.0 mm than that of the product B of the present invention.
【００１６】本発明品Ｂおよび比較ランプＢについて前
記と同様に発光効率の測定を行なったところ、本発明品
Ｂは比較ランプＡに比べ発光効率が０．５％向上するこ
とが確認できた。また、本発明品Ｂおよび比較ランプＢ
について前記と同様にランプ強度の試験を行ったとこ
ろ、本発明品Ｂは５本とも連結部において破損は生じな
かったが、比較ランプＢは５本中２本に破損が生じた。
これは、比較ランプＢの連結部近傍に歪が残っていたた
めと考えられる。The luminous efficiency of the product B of the present invention and the comparative lamp B was measured in the same manner as described above, and it was confirmed that the luminous efficiency of the product B of the present invention was improved by 0.5% as compared with the comparative lamp A. The product B of the present invention and the comparative lamp B
In the same manner as above, a lamp strength test was carried out in the same manner as described above. As a result, no breakage occurred in the connection portion of all five inventive products B, but two out of the five comparative lamps B suffered damage.
It is considered that this is because distortion remained near the connecting portion of the comparison lamp B.
【００１７】さらに、同様に本発明品Ｃとして間隔Ｇが
２．５ｍｍの環形蛍光ランプ、および、比較ランプＣと
して間隔Ｇが４．０ｍｍである環形蛍光ランプを作製
し、前記と同様に比較し評価を行った。その結果、本発
明品Ｃの発光効率は比較ランプＡおよび比較ランプＢと
比して０．５％向上することが確認でき、さらに本発明
品Ｃの発光効率は比較ランプＣと比して１．５％向上し
ていることが分かった。Further, a ring-shaped fluorescent lamp having a gap G of 2.5 mm as a product C of the present invention and a ring-shaped fluorescent lamp having a gap G of 4.0 mm as a comparative lamp C were produced in the same manner. An evaluation was performed. As a result, it was confirmed that the luminous efficiency of the product C of the present invention was improved by 0.5% as compared with the comparative lamps A and B. Further, the luminous efficiency of the product C of the present invention was 1% as compared with the comparative lamp C. It was found to be improved by 0.5%.
【００１８】これらの結果を間隔Ｇの大きさ順に表１に
示す。The results are shown in Table 1 in the order of the interval G.
【００１９】[0019]
【表１】 [Table 1]
【００２０】表１から明らかなように、環状管１と環状
管２との間隙Ｇを１．０ｍｍ以上３．０ｍｍ未満とする
ことで、発光効率を従来よりも向上させることができ、
かつランプ強度も向上することができる。As is clear from Table 1, by setting the gap G between the annular tube 1 and the annular tube 2 to be 1.0 mm or more and less than 3.0 mm, the luminous efficiency can be improved more than before.
In addition, the lamp strength can be improved.
【００２１】なお、本発明にかかる環形蛍光ランプは、
４５ｋＨｚ、３６０ｍＡ等の高周波電流で点灯しても同
様の効果が得られる。The ring-shaped fluorescent lamp according to the present invention comprises:
The same effect can be obtained by lighting with a high-frequency current such as 45 kHz and 360 mA.
【００２２】また、環状管１と環状管２との間隙Ｇを比
較ランプＢの様に１．０ｍｍ未満にすると、連結部３で
のガラス歪が残り易くランプ製造が困難であった。一
方、比較ランプＡ，Ｃの様に、その間隙Ｇを３．０ｍｍ
以上とすると、ランプ製造中にもランプ強度が充分確保
できず不良品となる場合があった。Further, when the gap G between the annular tube 1 and the annular tube 2 is less than 1.0 mm as in the comparative lamp B, glass distortion at the connecting portion 3 is apt to remain, and it is difficult to manufacture the lamp. On the other hand, like the comparative lamps A and C, the gap G is 3.0 mm.
In this case, the lamp strength may not be sufficiently ensured during the manufacture of the lamp, resulting in a defective product.
【００２３】[0023]
【発明の効果】以上説明したように、本発明は、隣接す
る環状管の間隙を１．０ｍｍ以上でかつ３．０ｍｍ未満
にすることにより、従来の構成のものに比べ発光効率が
高く、かつランプ強度も高いという優れた効果を有する
環形蛍光ランプを提供することができるものである。As described above, according to the present invention, by setting the gap between adjacent annular tubes to be at least 1.0 mm and less than 3.0 mm, the luminous efficiency is higher than that of the conventional structure, and It is possible to provide a ring-shaped fluorescent lamp having an excellent effect of high lamp intensity.
【図１】本発明の一実施の形態である環形蛍光ランプの
正面図FIG. 1 is a front view of an annular fluorescent lamp according to an embodiment of the present invention.
【図２】同じくその要部拡大断面図FIG. 2 is an enlarged sectional view of a main part of the same.
１ 外側の環状管 ２ 内側の環状管 ３ 連結部 ４ 電極 ５ 口金 Ｇ 隣接する環状管の間隙 DESCRIPTION OF SYMBOLS 1 Outer annular pipe 2 Inner annular pipe 3 Connecting part 4 Electrode 5 Base G Gap between adjacent annular pipes
フロントページの続き (56)参考文献 特開 平２−61956（ＪＰ，Ａ) 特開 平６−203798（ＪＰ，Ａ) 特開 平４−138652（ＪＰ，Ａ) 特開 昭62−278749（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 61/32 Continuation of the front page (56) References JP-A-2-61195 (JP, A) JP-A-6-203798 (JP, A) JP-A-4-138652 (JP, A) JP-A-62-278749 (JP) , A) (58) Field surveyed (Int. Cl. 7 , DB name) H01J 61/32
Claims (1)
設けられ、前記複数本の環状管を連結部によって連結さ
れて、最外側の環状管の一端部に設けられた電極から最
内側の環状管の一端部に設けた電極に至る一つの放電路
が形成されており、隣接する前記環状管の間隙が１．０
ｍｍ以上３．０ｍｍ未満の範囲を満足することを特徴と
する環形蛍光ランプ。A plurality of annular pipes having different ring diameters are provided coaxially, and the plurality of annular pipes are connected by a connecting portion, and are connected to an electrode provided at one end of an outermost annular pipe. One discharge path leading to an electrode provided at one end of the inner annular tube is formed, and a gap between the adjacent annular tubes is set to 1.0.
A ring-shaped fluorescent lamp satisfying a range of not less than 3.0 mm and not more than 3.0 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07284787A JP3135492B2 (en) | 1995-11-01 | 1995-11-01 | Ring fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP07284787A JP3135492B2 (en) | 1995-11-01 | 1995-11-01 | Ring fluorescent lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH09129180A JPH09129180A (en) | 1997-05-16 |
| JP3135492B2 true JP3135492B2 (en) | 2001-02-13 |
Family
ID=17683022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP07284787A Expired - Lifetime JP3135492B2 (en) | 1995-11-01 | 1995-11-01 | Ring fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3135492B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7443092B2 (en) * | 2002-11-22 | 2008-10-28 | Toshiba Lighting & Technology Corporation | Fluorescent lamp including a multi-ringed bulb |
-
1995
- 1995-11-01 JP JP07284787A patent/JP3135492B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH09129180A (en) | 1997-05-16 |
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