JPS6367746B2 - - Google Patents
Info
- Publication number
- JPS6367746B2 JPS6367746B2 JP3444782A JP3444782A JPS6367746B2 JP S6367746 B2 JPS6367746 B2 JP S6367746B2 JP 3444782 A JP3444782 A JP 3444782A JP 3444782 A JP3444782 A JP 3444782A JP S6367746 B2 JPS6367746 B2 JP S6367746B2
- Authority
- JP
- Japan
- Prior art keywords
- outer tube
- tube
- bent
- electrode
- wall
- 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
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/72—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a main light-emitting filling of easily vaporisable metal vapour, e.g. mercury
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】
この発明は、放電空間を形成する外管内に、所
定の放電路が形成されるように、放電空間を規制
する内管を有する低圧水銀蒸気放電灯に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a low-pressure mercury vapor discharge lamp having an inner tube that regulates a discharge space so that a predetermined discharge path is formed within the outer bulb.
この種放電灯として特開昭54−44370号に提案
されているものがある。第１図はその放電灯を示
すもので、放電空間を形成する頂部１１がドーム
状した外管１とこの外管の底部を形成する基板２
に一対の電極３１，３２を封着し１個の電極３１
にはこの電極３１を気密態様に包囲する１個のｕ
字状に折曲された内管４１を設け、他方の電極３
２にも同様にもう１個の内管４２を設け、さらに
夫々の内管４１，４２の開口部７１，７２を側の
一端を基板２近くに位置させ、これ等内管４１，
４２によつて折曲された放電路を形成させるよう
にしたものである。５は基部、６は口金。 A discharge lamp of this type is proposed in Japanese Patent Application Laid-Open No. 54-44370. Figure 1 shows the discharge lamp, showing an outer bulb 1 with a domed top 11 forming a discharge space, and a substrate 2 forming the bottom of the outer bulb.
A pair of electrodes 31 and 32 are sealed to form one electrode 31.
There is one u surrounding this electrode 31 in an airtight manner.
An inner tube 41 bent into a letter shape is provided, and the other electrode 3
2 is similarly provided with another inner tube 42, and one end of the openings 71, 72 of each of the inner tubes 41, 42 is positioned near the substrate 2, and these inner tubes 41,
42 to form a bent discharge path. 5 is the base, 6 is the base.
このように構成された放電灯においては内管４
１，４２がコンパクト化された形で外管１内に有
るため内管４１，４２の動作温度は従来の直管ラ
ンプ等に比べて高いが、このために紫外線出力能
が低下することはない。これは内管４１，４２の
水銀蒸気圧は放電空間内の最冷部によつて決まる
ことに起因しており、水銀蒸気圧は内管４１，４
２よりも温度の低い外管１壁部によつてコントロ
ールされるためである。従つて放電灯を既存の白
熱電球用ソケツトに使用可能な比較的小形なもの
としてもランプ効率を低下させずにすむ利点を有
している。 In a discharge lamp configured in this way, the inner tube 4
1 and 42 are located in the outer tube 1 in a compact form, the operating temperature of the inner tubes 41 and 42 is higher than that of conventional straight tube lamps, but this does not reduce the ultraviolet output ability. . This is because the mercury vapor pressure in the inner tubes 41 and 42 is determined by the coldest part in the discharge space.
This is because the temperature is controlled by the wall portion of the outer tube 1 whose temperature is lower than that of the outer tube 2. Therefore, even if the discharge lamp is relatively small and can be used in existing incandescent lamp sockets, it has the advantage of not reducing lamp efficiency.
しかしながら上記構成の放電灯においては、よ
り高光出力化が要求される場合には、内管４１，
４２の高さを高くするか、内管４１，４２の湾曲
部を大きくするような手段を選ぶことになり、勢
いコンパクト化が阻害される問題があつた。さら
に内管４１，４２は夫々ｕ字状を呈し、外管１は
このｕ字状内管４１，４２の湾曲部，脚部に沿う
ように有るため外管１の壁部温度はわづかに電極
３１，３２近傍の壁部温度が高いことを除いては
その他の部分ではあまり変らない。従つて上述し
た最冷部が外管１壁部のどの位置に形成されるか
は点灯状態によつてきわめて不規則なものとな
る。このため実際の点灯時は、外管１壁部全体に
不規則に水銀粒の付着が発生し外観上見苦しいも
のであつた。また実用上最も頻度の高い口金６が
上部になる鉛直点灯の際は外管１の頂部１１に集
中的に水銀粒が付着し、より外観性を損うもので
あつた。 However, in the discharge lamp having the above configuration, when higher light output is required, the inner tube 41,
42 or the curved portions of the inner tubes 41 and 42 were chosen, which resulted in the problem of impeding compactness. Furthermore, since the inner tubes 41 and 42 each have a U-shape, and the outer tube 1 is located along the curved parts and legs of the U-shaped inner tubes 41 and 42, the wall temperature of the outer tube 1 is slightly lower. Except for the fact that the wall temperature near the electrodes 31 and 32 is high, there is not much difference in other parts. Therefore, the location on the wall of the outer tube 1 where the coldest portion described above is formed is extremely irregular depending on the lighting condition. Therefore, during actual lighting, mercury particles were irregularly deposited on the entire wall of the outer bulb 1, resulting in an unsightly appearance. Furthermore, when lighting is performed vertically with the base 6 at the top, which is the most common practice, mercury particles are concentrated on the top 11 of the outer bulb 1, further deteriorating the appearance.
この発明は上記欠点に鑑みてなされたものであ
り、放電空間を形成する外管内に放電空間を規制
する内管を備えたものにおいて、ｕ字状の内管の
開放部側の他端部を、内管の電極を内包した側の
一端部側に接近するように折り曲げるとともに、
内管両端に互いに平行な直線部を設け、高光出力
化に対してもコンパクト性を維持でき、また最冷
部を外管の底部付近の壁部に強制的に固定でき、
通常の点灯時においても外観性を向上させ得る低
圧水銀蒸気放電灯を提供することを目的としたも
のである。 This invention was made in view of the above-mentioned drawbacks, and in a device that is provided with an inner tube that regulates the discharge space within an outer tube that forms the discharge space, the other end of the U-shaped inner tube on the open side is , while bending the inner tube so as to approach one end of the side containing the electrode,
Parallel straight sections are provided at both ends of the inner tube to maintain compactness even when increasing light output, and the coldest section can be forcibly fixed to the wall near the bottom of the outer tube.
The object of the present invention is to provide a low-pressure mercury vapor discharge lamp that can improve the appearance even during normal lighting.
以下、この発明の一実施例を第２図ないし第３
図によつて説明する。第２図において、１は頂部
１１がドーム状を成し底部が開口な透光性のガラ
ス製外管、２はこの外管１の底部を形成するよう
に外管１に封着されたステンレス製薄基板、３
１，３２は外管１内に突出するように基板２に封
着された一対の電極で夫々の電極３１，３２は基
板２の中心より遠ざかつてかつ互に近接するよう
に設けられている。４１，４２は内面に螢光体層
８を被着したガラス製内管である。この内管４
１，４２は、略Ｕ字状を呈しており、かつ一方の
端部側を直線状とした直線部４１ｂ，４２ｂとす
るとともに、他方の端部側を一方の端部側に接近
するように折曲し、さらにその折り曲げ部４１
ａ，４２ａの先端部を上記直線部４１ｂ，４２ｂ
と平行となるような直線状した直線部４１ａ，４
２ａを形成している。そして１個の内管４１は、
一方の直線部４１ｂの端部に１個の電極３１を気
密態様に内包して基板２に固着され、他端部は基
板２に対向した開放部７１を成している。そして
他方の内管４２はもう１個の電極３２を気密態様
に内包して基板に固着されているとともに他端部
は上記一方の内管４１と同様に基板２に対向した
開放部７２を有している。さらに夫々の内管４
１，４２同士は互に並設された構成となつてい
る。また上記外管１と基板２によつて密閉された
空間内には、所定量の水銀と希ガスが封入されて
いる。５は上記外管１の底部に固定され、内部に
安定器および始動装置（いずれも図示せず）を収
納した基部で、さらにこの基部５には口金６が固
定され、白熱電球用ソケツトに組込み可能となつ
ている。 An embodiment of the present invention will be described below with reference to FIGS. 2 to 3.
This will be explained using figures. In Fig. 2, 1 is a translucent glass outer tube with a dome-shaped top 11 and an open bottom, and 2 is a stainless steel tube sealed to the outer tube 1 to form the bottom of the outer tube 1. thin substrate, 3
A pair of electrodes 1 and 32 are sealed to the substrate 2 so as to protrude into the outer tube 1, and the electrodes 31 and 32 are provided so as to be distant from the center of the substrate 2 and close to each other. Reference numerals 41 and 42 are glass inner tubes having a phosphor layer 8 coated on their inner surfaces. This inner tube 4
1 and 42 have a substantially U-shape, and one end side is a straight line part 41b, 42b, and the other end side is close to the one end side. The bent portion 41
The tips of a and 42a are connected to the straight parts 41b and 42b.
Straight line portions 41a, 4 parallel to
2a is formed. And one inner tube 41 is
An electrode 31 is hermetically enclosed in one end of one straight portion 41b and fixed to the substrate 2, and the other end forms an open portion 71 facing the substrate 2. The other inner tube 42 includes another electrode 32 in an airtight manner and is fixed to the substrate, and the other end has an open portion 72 facing the substrate 2 like the one inner tube 41. are doing. Furthermore, each inner tube 4
1 and 42 are arranged in parallel with each other. Furthermore, a predetermined amount of mercury and rare gas are sealed in the space sealed by the outer tube 1 and the substrate 2. A base 5 is fixed to the bottom of the outer tube 1 and houses a ballast and a starting device (none of which are shown) inside, and a cap 6 is fixed to the base 5, which can be incorporated into an incandescent light bulb socket. It's becoming possible.
このように構成された放電灯は動作時、内管４
１，４２及び内管折り曲げ部４１ａ，４２ａの開
放部７１，７２を経由した放電路を形成する。 During operation, the discharge lamp configured in this way has an inner tube 4.
1, 42 and the open portions 71, 72 of the inner tube bent portions 41a, 42a to form a discharge path.
ここにおいて、頂部１１を含めた大部分の外管
壁部（第３図に示すA1，A2，A3の部分）は並設
された内管４１，４２と近接しており、内管から
の熱を受けてそれら内管４１，４２の表面温度に
近い外管壁部温度となるが内管の折り曲げ部４１
ａ，４２ａと逆方向の外管壁部（Ｂの部分）は内
管や電極と遠ざかつた構成となつているため熱の
影響が小さくなり、壁部温度は他の壁部に比べて
低くなる。 Here, most of the outer tube wall portion including the top portion 11 (portions A 1 , A 2 , A 3 shown in FIG. 3) is close to the inner tubes 41 and 42 arranged in parallel, and the inner tube The temperature of the outer tube wall becomes close to the surface temperature of the inner tubes 41 and 42 due to the heat from the bent portion 41 of the inner tube.
The outer tube wall (portion B) in the opposite direction from a and 42a is configured to be far away from the inner tube and electrodes, so the influence of heat is reduced, and the wall temperature is lower than that of other wall sections. .
このため通常の点灯状態ではＢの部分の外管壁
部が最冷部となり、水銀が集中的に付着する。し
たがつて水銀が外管全体や外管頂部１１に付くこ
とが無くなるため外観性は著しく向上する。しか
もこの最冷部は放電灯の外観上あまり問題となら
ない外管底部付近に有るためこの点でも好ましい
結果となる。 Therefore, in a normal lighting state, the outer tube wall of the part B becomes the coldest part, and mercury is concentrated on it. Therefore, since mercury is not attached to the entire outer tube or the top portion 11 of the outer tube, the appearance is significantly improved. Furthermore, since this coldest part is located near the bottom of the outer tube, which does not pose much of a problem in terms of the appearance of the discharge lamp, this is also a favorable result.
一方、内管４１，４２の直線部４１ｃ，４２ｃ
は放電路長を長くするように作用するから、発光
効率を向上させる。また、この直線部４１ｃ，４
２ｃは内管４１，４２の成形工程において、成形
装置の被支持部となり、成形作業を容易にする効
果を期待できる。 On the other hand, the straight parts 41c and 42c of the inner tubes 41 and 42
acts to lengthen the discharge path length, thereby improving luminous efficiency. Moreover, this straight portion 41c, 4
2c becomes a supported part of the molding device during the molding process of the inner tubes 41 and 42, and can be expected to have the effect of facilitating the molding operation.
第４図は上記実施例とは異なる他の実施例を示
すものである。すなわち、夫々の内管４１，４２
の電極３１，３２を有さない他端の先端も外管１
の基板２に固着し、折り曲げ部４１ａ，４２ａに
夫々開口を設け、この開口を開放部７１，７２と
し、夫々の開放部７１，７２は互に対向させるよ
うにしたものである。 FIG. 4 shows another embodiment different from the above embodiment. That is, each inner tube 41, 42
The tip of the other end which does not have the electrodes 31 and 32 is also connected to the outer tube 1.
The bent portions 41a and 42a are fixed to the substrate 2, and openings are provided in the bent portions 41a and 42a, respectively, and these openings are used as open portions 71 and 72, and the respective open portions 71 and 72 are arranged to face each other.
このように構成されたランプにおいても、上記
実施例と同等の効果が得られるとともに、夫々の
内管４１，４２と基板２との固定は各々２ケ所で
行えるため、ランプに加わる振動や、衝撃に対す
る内管の保持強度が増すなどの新たな効果も得ら
れる。次に具体的な効果について記述する。上記
第２図ないし第３図に示す放電灯において外管１
は外径(D)60（mm）×全高(H)90（mm）で頂部１１がド
ーム状したバルブを使用し、内管４１，４２は外
径14（mm）の細管を使用し、外管内方向への折り
曲げ部４１ａ，４２ａを除く部分は外管形状に沿
うように略ｕ字状に湾曲させた。ここにおいて折
り曲げ部４１ａ，４２ａと逆方向の外管内壁まで
の距離d1は約15（mm）であり、折り曲げ部を除く
他の部分は内管外壁と外管内壁との最近接距離
（d2）は約３（mm）であつた。また夫々の内管４
１，４２は約10（mm）の間隔で並設した。そして
このランプのアーク長は約300（mm）であり、基部
５には20ワツト用のチヨークコイル安定器及びグ
ロースタータ、雑音防止コンデンサを内蔵すると
ともに、電球口金６を取付けた。 Even in a lamp configured in this way, the same effects as those of the above embodiment can be obtained, and since the inner tubes 41 and 42 can be fixed to the substrate 2 at two places each, vibrations and shocks applied to the lamp can be prevented. New effects such as an increase in the holding strength of the inner tube against the inner tube are also obtained. Next, specific effects will be described. In the discharge lamp shown in Figures 2 and 3 above, the outer tube 1
uses a valve with an outer diameter (D) of 60 (mm) x total height (H) of 90 (mm) and a domed top 11, and the inner tubes 41 and 42 are thin tubes with an outer diameter of 14 (mm). The portion excluding the bent portions 41a and 42a in the tube inward direction was curved into a substantially U-shape along the outer tube shape. Here, the distance d 1 from the bent portions 41a and 42a to the inner wall of the outer tube in the opposite direction is approximately 15 (mm), and the distance d 1 between the outer tube outer wall and the inner wall of the outer tube is approximately 15 (mm). 2 ) was approximately 3 (mm). Also, each inner pipe 4
Nos. 1 and 42 were placed side by side at an interval of approximately 10 (mm). The arc length of this lamp is about 300 (mm), and the base 5 has a built-in 20-watt choke coil ballast, glow starter, and noise prevention capacitor, and a light bulb cap 6 is attached.
この放電灯は外気温20±２℃でほぼ無風状態下
で、１つは口金６が上部になる鉛直点灯状態で、
他方は口金６が下部になる鉛直点灯状態で各々20
個の放電灯を約１昼夜点灯した結果いずれの点灯
方式においても20個共外管１のＢの壁部に水銀粒
の付着が見られ他の壁部には水銀粒の付着はなか
つた。またこのＢの外壁部温度を測定したところ
他のどの外壁部温度より低いものであつた。 This discharge lamp was operated under almost no wind conditions at an outside temperature of 20±2℃, and one was lit vertically with the base 6 at the top.
The other one is 20 each with the cap 6 at the bottom and vertically lit.
As a result of lighting 20 discharge lamps for about one day and one night, mercury particles were found to be attached to the wall B of outer tube 1 in all 20 lamps, but no mercury particles were attached to the other walls. Also, when the temperature of the outer wall of this B was measured, it was lower than that of any other outer wall.
以上詳細に説明したように本発明は、放電空間
を形成する外管内に放電空間を規制する２個の並
設された内管を備え、夫々の内管の一端に直線部
を形成し、この直線部端に１個の電極を内包さ
せ、他端部を一端部側に接近するように折り曲げ
部を形成するとともに、この折り曲げ部の先端部
を電極に内包した側の端部直線部と平行となるよ
うに形成し、かつこの電極を内包しない側の端部
を外管内への開放部としたので、開放部近傍の内
管折り曲げと逆方向の外管壁部が最冷部となるか
ら、通常の点灯状態ではこの外管壁部に水銀が付
着するようになり、外管頂部や、外管壁部全体に
付着することがなくなり、外観性は著しく向上す
る。また、内管両端の直線部は放電路長を延長さ
せ、発光効率を向上させるとともに、成形装置の
被支持部となるため、成形作業を容易にする等の
効果を奏する。 As described above in detail, the present invention includes two inner tubes arranged in parallel to regulate the discharge space within the outer tube that forms the discharge space, and a straight section is formed at one end of each inner tube, and the inner tube defines the discharge space. One electrode is included in the end of the straight part, and a bent part is formed so that the other end approaches the one end side, and the tip of this bent part is parallel to the straight part of the end on the side where the electrode is included. Since the end on the side that does not contain the electrode is an opening into the outer tube, the outer tube wall in the opposite direction to the bending of the inner tube near the opening becomes the coldest part. Under normal lighting conditions, mercury will adhere to the wall of the outer tube, but will no longer adhere to the top of the outer tube or the entire wall of the outer tube, and the appearance will be significantly improved. In addition, the straight portions at both ends of the inner tube extend the length of the discharge path and improve the luminous efficiency, and also serve as supported portions of the molding device, making the molding work easier.
第１図は従来の低圧水銀蒸気放電灯を一部切欠
いて示す斜視図、第２図はこの発明による低圧水
銀蒸気放電灯の一実施例を一部切欠いて示す斜視
図、第３図は同部分縦断面図、第４図はこの発明
の他の実施例を一部切欠いて示す斜視図である。
図中、１は外管、２は基板、３１，３２は電
極、４１，４２は内管、４１ａ，４２ａは折り曲
げ部、４１ｃ，４２ｃは直線部、７１，７２は開
放部。なお、各図中同一符号は同一または相当部
分を示す。
FIG. 1 is a partially cut-away perspective view of a conventional low-pressure mercury vapor discharge lamp, FIG. 2 is a partially cut-away perspective view of an embodiment of the low-pressure mercury vapor discharge lamp according to the present invention, and FIG. FIG. 4 is a partially cut away perspective view of another embodiment of the present invention. In the figure, 1 is an outer tube, 2 is a substrate, 31 and 32 are electrodes, 41 and 42 are inner tubes, 41a and 42a are bent portions, 41c and 42c are straight portions, and 71 and 72 are open portions. Note that the same reference numerals in each figure indicate the same or corresponding parts.
Claims (1)
電極と、一端に１個の電極を気密態様に内包し、
他端部を開放部とした２個の互に並設されたＵ字
状の内管を備え、この内管は、電極を内包した側
の一端部を直線状に形成するとともに、開放部側
のの他端部を上記一端部側に接近するように折り
曲げて折り曲げ部を形成し、さらにその折り曲げ
部の先端部に電極を内包した側の直線部と平行と
なる直線部を形成したことを特徴とする低圧水銀
蒸気放電灯。 ２ ２個の内管は電極を内包した側の端部同士、
及び折り曲げ部同士を互に近接させたことを特徴
とする特許請求の範囲第１項記載の低圧水銀蒸気
放電灯。 ３ 内管の電極を有さない側の端部の先端を外管
の底部に封着し、折り曲げ部に開口を設け、この
開口を開放部としたことを特徴とする特許請求の
範囲第１項記載の低圧水銀蒸気放電灯。 ４ ２個の内管は電極を内包した側の端部同士、
及び折り曲げ部同士を互に近接させかつ開放部を
対向させたことを特徴とする特許請求の範囲第３
項記載の低圧水銀蒸気放電灯。[Claims] 1. An outer tube, a pair of electrodes sealed to the bottom of the outer tube, and one electrode enclosed in an airtight manner at one end,
It is equipped with two U-shaped inner tubes arranged in parallel with each other, each having an open end at the other end. The other end of the electrode is bent to approach the one end side to form a bent part, and the tip of the bent part is further formed with a straight part that is parallel to the straight part on the side containing the electrode. Characteristic low pressure mercury vapor discharge lamp. 2 The ends of the two inner tubes on the side containing the electrodes,
The low-pressure mercury vapor discharge lamp according to claim 1, wherein the bent portions are arranged close to each other. 3. Claim 1, characterized in that the tip of the end of the inner tube that does not have an electrode is sealed to the bottom of the outer tube, and an opening is provided in the bent part, and this opening is used as an open part. Low-pressure mercury vapor discharge lamps as described in . 4 The ends of the two inner tubes that contain the electrodes are connected to each other,
and Claim 3, characterized in that the bent parts are close to each other and the open parts are opposed to each other.
Low-pressure mercury vapor discharge lamps as described in .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3444782A JPS58152363A (en) | 1982-03-04 | 1982-03-04 | Low pressure mercury-vapor discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3444782A JPS58152363A (en) | 1982-03-04 | 1982-03-04 | Low pressure mercury-vapor discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58152363A JPS58152363A (en) | 1983-09-09 |
| JPS6367746B2 true JPS6367746B2 (en) | 1988-12-27 |
Family
ID=12414498
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3444782A Granted JPS58152363A (en) | 1982-03-04 | 1982-03-04 | Low pressure mercury-vapor discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58152363A (en) |
-
1982
- 1982-03-04 JP JP3444782A patent/JPS58152363A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58152363A (en) | 1983-09-09 |
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