JPH11203934A - Fluorescent lamp - Google Patents
Fluorescent lampInfo
- Publication number
- JPH11203934A JPH11203934A JP10018199A JP1819998A JPH11203934A JP H11203934 A JPH11203934 A JP H11203934A JP 10018199 A JP10018199 A JP 10018199A JP 1819998 A JP1819998 A JP 1819998A JP H11203934 A JPH11203934 A JP H11203934A
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- electrode
- fluorescent lamp
- lead wire
- fuse
- 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
Links
Landscapes
- Arrangement Of Elements, Cooling, Sealing, Or The Like Of Lighting Devices (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は蛍光ランプに係り、
特にランプ構成物の熱破損を防止するのに好適な蛍光ラ
ンプに関する。The present invention relates to a fluorescent lamp,
Particularly, the present invention relates to a fluorescent lamp suitable for preventing thermal damage of a lamp component.
【０００２】[0002]
【従来の技術】蛍光ランプは発光管内に放電路を形成し
て発光するランプであるが、これを長期にわたり高周波
で点灯すると、特に寿命末期に、発光管内の電極のエミ
ッターが飛散した後に半波放電を起こすことがある。こ
のような半波放電が起きると、電極物質（タングステ
ン）や内部リード線（ニッケル、鉄など）の飛散が激し
くなり、これらの飛散物質が電極に近いステムの先端面
に付着堆積して、一対のリード線間で導通経路が形成さ
れる場合がある。2. Description of the Related Art A fluorescent lamp is a lamp which emits light by forming a discharge path in an arc tube. When the lamp is operated at a high frequency for a long period of time, especially at the end of its life, a half-wave occurs after the emitter of an electrode in the arc tube scatters. Discharge may occur. When such a half-wave discharge occurs, the scattering of electrode material (tungsten) and internal lead wires (nickel, iron, etc.) becomes severe, and these scattering materials adhere to and accumulate on the tip end surface of the stem close to the electrode. A conduction path may be formed between the lead wires.
【０００３】このような場合、例えば電極の予熱回路が
定電流制御式のときには、電極が断線した後にも一対の
内部リード線間に電流が流れる。このため電流の導通経
路が発熱し、ステムを熱破損させる場合がある。この問
題を解消するため、例えば特開平６−３３８２８９号公
報には、内部リード線が貫通する封着部材に凹陥部を形
成したり、内部リード線に絶縁物を設けたり、あるいは
飛散物質の付着阻止部材を設けたりする技術が開示され
ている。In such a case, for example, when the electrode preheating circuit is of a constant current control type, current flows between the pair of internal leads even after the electrode is disconnected. For this reason, the current conduction path generates heat, and the stem may be thermally damaged. In order to solve this problem, for example, Japanese Patent Application Laid-Open No. Hei 6-338289 discloses that a sealing member through which an internal lead wire penetrates is provided with a concave portion, an insulating material is provided on the internal lead wire, A technique of providing a blocking member is disclosed.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら従来の技
術は、電極やステムを有するマウント製造設備の大幅な
変更あるいは新規のマウント製造設備の設置等が必要と
なり、蛍光ランプの製造コストが高くなるという欠点が
ある。また蛍光ランプは、一般に水平に設置して点灯さ
れるため、上述のような半波放電によって電極物質や内
部リード線の飛散が激しくなると、ステムとは別に電極
近傍の発光管内面に飛散物が堆積し、その熱で発光管が
熱破損するおそれもある。However, the conventional technique has a drawback that the cost of manufacturing a fluorescent lamp is high because it requires a significant change in a mount manufacturing facility having electrodes and stems or installation of a new mount manufacturing facility. There is. In addition, since fluorescent lamps are generally installed horizontally and lit, if the electrode material and internal lead wires are scattered by the half-wave discharge as described above, the scattered objects are scattered on the inner surface of the arc tube near the electrodes separately from the stem. There is also a possibility that the arc tube is deposited and the heat causes the arc tube to be thermally damaged.
【０００５】従って本発明の目的は、ランプ構成物の熱
破損を簡単な構成で防止することのできる蛍光ランプを
提供することにある。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a fluorescent lamp which can prevent thermal damage of a lamp component with a simple configuration.
【０００６】[0006]
【課題を解決するための手段】上記目的は、発光管の電
極に接続されたリード線に温度ヒューズを介在させ、且
つこの温度ヒューズを電極近傍の発光管外部に固定する
ことにより、達成される。このようにする理由は、電極
物質や内部リード線の飛散が激しくなって電極近傍の発
光管内面に飛散物が堆積した時には、電極近傍が最も高
温となるからである。これにより、電極近傍の発光管が
所定温度以上になったときに温度ヒューズが切れてリー
ド線が断線することで、発光管等のランプ構成物が熱破
損する前にランプへの電流が遮断される。The above object is achieved by interposing a thermal fuse in the lead wire connected to the electrode of the arc tube and fixing the thermal fuse outside the arc tube near the electrode. . The reason for this is that the temperature of the vicinity of the electrode becomes the highest when the scattering of the electrode material and the internal lead wire becomes so severe that scattered matter is deposited on the inner surface of the arc tube near the electrode. Thereby, when the arc tube near the electrode becomes higher than a predetermined temperature, the temperature fuse is blown and the lead wire is disconnected, so that the current to the lamp is cut off before the lamp components such as the arc tube are thermally damaged. You.
【０００７】この温度ヒューズは、発光管の末端部に設
けられる口金の内部に設置することも考えられるが、こ
の方法ではヒューズの設置点が電極部分から離れるため
温度感度が悪くなる。従って本発明では、上述のように
ヒューズを電極近傍の発光管部分に設けるものである。It is conceivable to install this thermal fuse inside a base provided at the end of the arc tube. However, in this method, the installation point of the fuse is away from the electrode portion, so that the temperature sensitivity is deteriorated. Therefore, in the present invention, the fuse is provided in the arc tube portion near the electrode as described above.
【０００８】蛍光ランプが、その形態として、電極を備
えた端部同士が近接配置された発光管を有する場合は、
ヒューズを各電極の位置する発光管に挟まれたところに
配置する。これにより、どちらの電極が異常高温となっ
てもヒューズが切れるよう構成することができる。この
種の具体的な蛍光ランプとしては、例えばほぼ同心円状
に配置した２つの環形発光管の一方の端部同士を連結
し、他方の端部にそれぞれ電極を備えたものや、２つの
直管の一方の端部同士を直接又は間接的に連結し、他方
の端部にそれぞれ電極を備えたもの、あるいは、曲管形
発光管の端部にそれぞれ電極を備えたものがある。これ
らの詳細については、後述する。In the case where the fluorescent lamp has, as its mode, an arc tube in which ends having electrodes are arranged close to each other,
The fuse is placed between the arc tubes where the electrodes are located. Thus, the fuse can be blown even if either of the electrodes becomes abnormally high temperature. As a specific fluorescent lamp of this type, for example, one in which two ends of two ring-shaped arc tubes arranged substantially concentrically are connected to each other and an electrode is provided at the other end, or two straight tube tubes are used. Are connected directly or indirectly to each other and an electrode is provided at the other end, respectively, or an electrode is provided at an end of a curved arc tube. Details of these will be described later.
【０００９】このようにすることにより、ランプ構成物
の熱破損を簡単な構成で防止可能な蛍光ランプを得るこ
とができる。By doing so, it is possible to obtain a fluorescent lamp capable of preventing thermal damage to the lamp components with a simple configuration.
【００１０】[0010]
【発明の実施の形態】図１は、本発明に係る蛍光ランプ
の一実施例を示す図である。図のように、本実施例の環
形蛍光ランプは、外輪となる環形発光管１と内輪となる
環形発光管２がほぼ同心円状に配置されている。環形発
光管１、２の一方の端部にはそれぞれ電極３、４を保持
したステム１３、１４を有するマウントが封着されてい
る。環形発光管１、２の他端間はブリッジ接合部１２に
より連結されている。これにより、外輪の環形発光管１
の電極３から内輪の環形発光管２の電極４に至る一つの
放電路が形成される。環形発光管１、２の両端部には口
金１１が設けられる。環形発光管１、２の内表面には蛍
光体が塗布されており、管内にはアルゴンやクリプトン
などの希ガスが２００〜５００Ｐａ及び水銀が封入され
ている。FIG. 1 is a view showing one embodiment of a fluorescent lamp according to the present invention. As shown in the figure, in the ring-shaped fluorescent lamp of this embodiment, a ring-shaped light emitting tube 1 serving as an outer ring and a ring-shaped light emitting tube 2 serving as an inner ring are arranged substantially concentrically. Mounts having stems 13 and 14 holding electrodes 3 and 4 are sealed to one ends of the ring-shaped arc tubes 1 and 2 respectively. The other ends of the annular arc tubes 1 and 2 are connected by a bridge joint 12. Thus, the outer ring-shaped arc tube 1
One discharge path is formed from the electrode 3 to the electrode 4 of the ring-shaped arc tube 2 of the inner ring. Bases 11 are provided at both ends of the ring-shaped arc tubes 1 and 2. Phosphors are applied to the inner surfaces of the ring-shaped light emitting tubes 1 and 2, and 200 to 500 Pa of rare gas such as argon and krypton and mercury are sealed in the tubes.
【００１１】このような二重環形蛍光ランプにおいて、
本実施例では、後述するリード線に接続された温度ヒュ
ーズ９を電極３、４の近傍であって環形発光管１、２の
間に配置する。温度ヒューズ９はシリコン充填剤１０に
より環形発光管１、２間に固定される。In such a double ring type fluorescent lamp,
In this embodiment, a thermal fuse 9 connected to a lead wire to be described later is arranged near the electrodes 3 and 4 and between the annular arc tubes 1 and 2. The thermal fuse 9 is fixed between the annular arc tubes 1 and 2 by a silicon filler 10.
【００１２】図２は、図１の蛍光ランプのＸ−Ｙ断面を
示す図である。図のように、シリコン充填剤１０は温度
ヒューズ９を、電極３、４の位置する環形発光管１と環
形発光管２に挟まれたところに配置し固定する。FIG. 2 is a diagram showing an XY cross section of the fluorescent lamp of FIG. As shown in the figure, the silicon filler 10 arranges and fixes the thermal fuse 9 between the ring-shaped light emitting tubes 1 and 2 where the electrodes 3 and 4 are located.
【００１３】図３は、図１の蛍光ランプの要部拡大図で
ある。図のように、電極３及び４はそれぞれリード線
５、６及び７、８と接続されており、これらのリード線
は環形発光管１、２の封止部から外部に引き出されてい
る。電極３、４の近傍の環形発光管１と環形発光管２と
の間隙には温度ヒューズ９が配置され、シリコン充填剤
１０により両発光管の間に固定されている。この充填剤
１０は温度ヒューズ９を固定するとともに、電極３、４
からの熱を確実に伝導させるため、温度ヒューズ全体を
覆っている。FIG. 3 is an enlarged view of a main part of the fluorescent lamp of FIG. As shown in the figure, the electrodes 3 and 4 are connected to lead wires 5, 6 and 7, 8 respectively, and these lead wires are drawn out of the sealed portions of the annular arc tubes 1 and 2. A temperature fuse 9 is disposed in the gap between the ring-shaped light emitting tube 1 and the ring-shaped light emitting tube 2 near the electrodes 3 and 4, and is fixed between the two light-emitting tubes by a silicon filler 10. The filler 10 fixes the thermal fuse 9 and also fixes the electrodes 3, 4.
In order to conduct the heat from the thermal fuse, it covers the entire thermal fuse.
【００１４】リード線７は、この温度ヒューズ９を介し
て口金１１に設けられた４本のピン１５の内の１つに接
続される。これにより本実施例の蛍光ランプは、温度ヒ
ューズ９が熱によって切れると電気回路が遮断し、放電
が停止される機能を有することとなる。The lead wire 7 is connected to one of four pins 15 provided on the base 11 via the thermal fuse 9. Thus, the fluorescent lamp of the present embodiment has a function of interrupting the electric circuit when the thermal fuse 9 is blown by heat and stopping the discharge.
【００１５】口金１１はピン部を除き、絶縁物及び口金
の外殻材としてのポリブチレンテレフタレート（ＰＢ
Ｔ）樹脂で形成されている。本実施例においては、口金
の絶縁物として耐熱温度２２０℃のＰＢＴ樹脂、動作温
度１８４℃の温度ヒューズ９を用いた。The base 11 is made of polybutylene terephthalate (PB) as an insulator and a shell material of the base except for a pin portion.
T) It is formed of resin. In this embodiment, a PBT resin having a heat-resistant temperature of 220 ° C. and a temperature fuse 9 having an operating temperature of 184 ° C. are used as insulators for the base.
【００１６】このような構成によれば、環形蛍光ランプ
を高周波で長期点灯し、寿命末期に半波放電となったラ
ンプにおいて、環形発光管１、２のどちらの電極で異常
高温が発生しても温度ヒューズが動作し、通電回路が停
止する。これによりランプ構成物の熱破損、特に環形発
光管１、２における電極近傍の熱破損を防ぐことができ
る。According to such a configuration, in the lamp in which the annular fluorescent lamp is operated for a long period of time at a high frequency and a half-wave discharge occurs at the end of its life, an abnormally high temperature occurs in either of the electrodes of the annular arc tubes 1 and 2. Also, the thermal fuse operates and the energizing circuit stops. This can prevent heat damage to the lamp components, particularly heat damage near the electrodes in the annular arc tubes 1 and 2.
【００１７】図４（ａ）は、発光管端部の温度分布の概
略を示す図、同図（ｂ）は（ａ）と対応しておりランプ
長手方向の一部断面を示す図である。図のように、正常
点灯時の発光管４１の端部の温度分布は、図の実線で示
すように、電極４２の近傍で最高温度となり、電極を離
れるに従って温度は下がる。異常時、半波放電によって
電極物質や内部リード線の飛散が激しくなって電極近傍
の発光管内面に飛散物が堆積し、異常高温が発生した場
合も同様に、図の破線で示すように、電極近傍で最高温
度となり、電極を離れるに従って温度は下がる。そこで
本発明では、温度感度を良くするために温度ヒューズ４
３を発光管端部の最高温度発生部分を含む位置に配置
し、部材４４によって固定するのである。FIG. 4A is a view schematically showing the temperature distribution at the end of the arc tube, and FIG. 4B is a view corresponding to FIG. 4A and showing a partial cross section in the longitudinal direction of the lamp. As shown in the figure, the temperature distribution at the end of the arc tube 41 during normal lighting has a maximum temperature near the electrode 42 as shown by the solid line in the figure, and the temperature decreases as the electrode is separated. In the event of an abnormality, the scattering of the electrode material and internal lead wire becomes intense due to the half-wave discharge, and the scattered matter accumulates on the inner surface of the arc tube near the electrode. The temperature is highest near the electrode, and decreases as the electrode is separated. Therefore, in the present invention, in order to improve the temperature sensitivity, the temperature fuse 4
3 is arranged at a position including the highest temperature generating portion at the end of the arc tube, and is fixed by the member 44.
【００１８】温度ヒューズ４３の動作温度は、正常点灯
時の電極近傍の発光管（ガラス管）最大温度である１２
０℃以上で、かつ口金の絶縁物の耐熱温度以下であるこ
とが必要である。これは温度ヒューズ４３の動作温度が
１２０℃以下の場合は、正常点灯であるにもかからわら
ず温度ヒューズ４３が働いてしまう不具合が生じるため
であり、かつ口金の絶縁物を熱による溶融から守ること
にある。このようなことから本実施例においては、前述
のとおり、口金の絶縁物として耐熱温度２２０℃のＰＢ
Ｔ樹脂、動作温度１８４℃の温度ヒューズを用いてい
る。The operating temperature of the temperature fuse 43 is the maximum temperature of the arc tube (glass tube) near the electrode during normal lighting.
The temperature must be 0 ° C. or higher and lower than the heat resistance temperature of the insulator of the base. This is because when the operating temperature of the thermal fuse 43 is 120 ° C. or lower, the thermal fuse 43 operates in spite of normal lighting, and the insulator of the base is melted by heat. To protect. For this reason, in this embodiment, as described above, PB having a heat-resistant temperature of 220 ° C.
A temperature fuse having an operating temperature of 184 ° C. is used for T resin.
【００１９】図５は、本発明に係る蛍光ランプの他の実
施例を示す図である。図のように、本実施例の蛍光ラン
プは、２つの直管５１、５２の一方の端部間に連結部５
３を有し、他方の端部にそれぞれ電極５４、５５を有す
る。電極から取り出された図示しないリード線には温度
ヒューズ５６が接続され、シリコン充填剤等の部材５７
によりヒューズ５６を電極の近傍の２つの直管の間に配
置する。２つの直管末端部は口金５８で共通に覆われ
る。本例では、２つの直管５１、５２の一方の端部同士
が連結部５３によって直接連結されているが、この端部
同士を他の一つ又は複数の発光管を介して間接的に連結
してもよい。本実施例においても、先の実施例と同様な
効果を得ることができる。FIG. 5 is a view showing another embodiment of the fluorescent lamp according to the present invention. As shown in the figure, the fluorescent lamp of the present embodiment has a connecting portion 5 between one ends of two straight tubes 51 and 52.
3 and electrodes 54 and 55 at the other end. A temperature fuse 56 is connected to a lead wire (not shown) taken out of the electrode, and a member 57 such as a silicon filler is used.
Disposes the fuse 56 between the two straight tubes near the electrodes. The ends of the two straight tubes are commonly covered with a base 58. In this example, one ends of the two straight tubes 51 and 52 are directly connected to each other by the connecting portion 53, but the ends are indirectly connected to each other via one or more other arc tubes. May be. In this embodiment, the same effect as in the previous embodiment can be obtained.
【００２０】図６（ａ）、（ｂ）は、それぞれ本発明に
係る蛍光ランプの他の実施例を示す図である。本実施例
では、曲管形発光管を有する蛍光ランプの例を２つ示
す。同図（ａ）は、Ｕ字形発光管６１を有する蛍光ラン
プであり、Ｕ字形発光管の端部にそれぞれ電極６２、６
３を有する。電極から取り出された図示しないリード線
には温度ヒューズ６４が接続され、シリコン充填剤等の
部材６５によりヒューズ６４を電極の近傍のＵ字形発光
管の端部間に配置する。Ｕ字形発光管末端部は口金６６
で共通に覆われる。同図（ｂ）は、図のような曲管形発
光管７１を有する蛍光ランプであり、曲管形発光管の端
部にそれぞれ電極７２、７３を有する。電極から取り出
された図示しないリード線には温度ヒューズ７４が接続
され、シリコン充填剤等の部材７５によりヒューズ７４
を電極の近傍の曲管形発光管の端部間に配置する。曲管
形発光管末端部は口金７６で共通に覆われる。これらの
実施例においても、先の実施例と同様な効果を得ること
ができる。FIGS. 6A and 6B are diagrams showing another embodiment of the fluorescent lamp according to the present invention. In this embodiment, two examples of a fluorescent lamp having a curved arc tube are shown. FIG. 7A shows a fluorescent lamp having a U-shaped arc tube 61, and electrodes 62 and 6 are provided at the ends of the U-shaped arc tube, respectively.
3 A temperature fuse 64 is connected to a lead wire (not shown) taken out of the electrode, and the fuse 64 is arranged between the ends of the U-shaped arc tube near the electrode by a member 65 such as a silicon filler. The end of the U-shaped arc tube is a base 66
Covered in common. FIG. 7B shows a fluorescent lamp having a curved tube-shaped light emitting tube 71 as shown in the figure, and has electrodes 72 and 73 at the ends of the curved tube-shaped light emitting tube, respectively. A temperature fuse 74 is connected to a lead wire (not shown) taken out of the electrode, and a fuse 75 is provided by a member 75 such as a silicon filler.
Is located between the ends of the curved arc tube near the electrodes. The ends of the arc tube are commonly covered by a base 76. In these embodiments, the same effects as in the previous embodiment can be obtained.
【００２１】また、温度ヒューズは必ずしも発光管の間
に挟む必要はなく、電極が近接配置されていない通常の
直管、環形あるいは曲管形の発光管を有する蛍光ランプ
に本発明を適用して、その電極近傍の発光管外部に温度
ヒューズを個別に配置することにより、上述したのと同
様な効果を得ることができる。Further, the present invention is not necessarily required to sandwich the thermal fuse between the arc tubes, and the present invention is applied to a fluorescent lamp having an ordinary straight tube, ring-shaped or curved tube-shaped arc tube in which electrodes are not arranged in close proximity. By separately arranging thermal fuses outside the arc tube near the electrodes, the same effect as described above can be obtained.
【００２２】[0022]
【発明の効果】本発明によれば、ランプ構成物の熱破損
を簡単な構成で防止することのできる蛍光ランプを得る
ことができる。According to the present invention, it is possible to obtain a fluorescent lamp which can prevent heat damage of a lamp component with a simple configuration.
【図１】本発明に係る蛍光ランプの一実施例を示す図で
ある。FIG. 1 is a view showing one embodiment of a fluorescent lamp according to the present invention.
【図２】図１の蛍光ランプのＸ−Ｙ断面を示す図であ
る。FIG. 2 is a diagram showing an XY cross section of the fluorescent lamp of FIG. 1;
【図３】図１の蛍光ランプの要部拡大図である。FIG. 3 is an enlarged view of a main part of the fluorescent lamp of FIG. 1;
【図４】（ａ）は発光管端部の温度分布の概略を示す
図、（ｂ）はランプ長手方向の一部断面を示す図であ
る。FIG. 4A is a view schematically showing a temperature distribution at an end of an arc tube, and FIG. 4B is a view showing a partial cross section in a lamp longitudinal direction.
【図５】本発明に係る蛍光ランプの他の実施例を示す図
である。FIG. 5 is a view showing another embodiment of the fluorescent lamp according to the present invention.
【図６】（ａ）、（ｂ）はそれぞれ本発明に係る蛍光ラ
ンプの他の実施例を示す図である。6 (a) and 6 (b) are diagrams showing another embodiment of the fluorescent lamp according to the present invention.
１ 環形発光管 ２ 環形発光管 ３ 電極 ４ 電極 ５ リード線 ６ リード線 ７ リード線 ８ リード線 ９ 温度ヒューズ １０ シリコン充填剤 １１ 口金 １２ ブリッジ接合部 １３ ステム １４ ステム DESCRIPTION OF SYMBOLS 1 Annular arc tube 2 Annular arc tube 3 Electrode 4 Electrode 5 Lead wire 6 Lead wire 7 Lead wire 8 Lead wire 9 Thermal fuse 10 Silicon filler 11 Base 12 Bridge junction 13 Stem 14 Stem
Claims (10)
管の電極に接続されたリード線と、前記リード線に接続
されたヒューズと、前記ヒューズを前記電極近傍の発光
管外部に固定する部材とを有することを特徴とする蛍光
ランプ。1. An arc tube having an electrode therein, a lead wire connected to an electrode of the arc tube, a fuse connected to the lead wire, and the fuse fixed outside the arc tube near the electrode. A fluorescent lamp comprising:
ン充填剤であることを特徴とする請求項１記載の蛍光ラ
ンプ。2. The fluorescent lamp according to claim 1, wherein the member is a silicon filler covering the fuse.
記端部内部にそれぞれ設けられた電極と、前記電極から
発光管外部に導出されたリード線と、前記リード線に接
続され且つ前記各電極の位置する発光管部分に挟まれた
ところに配置されたヒューズとを有することを特徴とす
る蛍光ランプ。3. An arc tube whose ends are arranged close to each other, an electrode provided inside the end, a lead wire led out of the electrode to the outside of the arc tube, and connected to the lead wire. And a fuse arranged between the arc tube portions where the electrodes are located.
２つの環形発光管の一方の端部同士を連結し、他方の端
部にそれぞれ電極を備えたものであることを特徴とする
請求項３記載の蛍光ランプ。4. The arc tube according to claim 1, wherein one ends of two annular arc tubes arranged substantially concentrically are connected to each other, and electrodes are provided at the other ends. Item 3. The fluorescent lamp according to Item 3.
同士を直接又は間接的に連結し、他方の端部にそれぞれ
電極を備えたものであることを特徴とする請求項３記載
の蛍光ランプ。5. The arc tube according to claim 3, wherein one ends of two straight tubes are directly or indirectly connected to each other, and electrodes are provided at the other ends. The fluorescent lamp as described.
極を備えたものであることを特徴とする請求項３記載の
蛍光ランプ。6. The fluorescent lamp according to claim 3, wherein the arc tube has an electrode at each end of the curved tube.
た発光管と、前記発光管の電極に接続されたリード線
と、前記発光管端部の最高温度発生部分を含む位置に配
置され且つ前記リード線に接続されたヒューズとを有す
ることを特徴とする蛍光ランプ。7. An arc tube in which ends of a sealed tube are arranged close to each other, a lead wire connected to an electrode of the arc tube, and a position including a maximum temperature generating portion at the end of the arc tube. And a fuse disposed and connected to the lead wire.
発光管をほぼ同心円状に配置し、前記両発光管の一方の
端部間を連結し、他方の端部にそれぞれ電極を備えた蛍
光ランプにおいて、前記電極から取り出されたリード線
に接続した温度ヒューズを前記両電極の近傍であって前
記外輪と内輪の発光管の間に配置したことを特徴とする
蛍光ランプ。8. A ring-shaped arc tube serving as an outer ring and a ring-shaped arc tube serving as an inner ring are arranged substantially concentrically, one end of each of the two arc tubes is connected, and an electrode is provided at the other end. In a fluorescent lamp, a thermal fuse connected to a lead wire taken out from the electrode is disposed near the two electrodes and between the arc tubes of the outer ring and the inner ring.
接的に連結し、他方の端部にそれぞれ電極を備えた蛍光
ランプにおいて、前記電極から取り出されたリード線に
接続した温度ヒューズを前記両電極の近傍であって前記
２つの直管の間に配置したことを特徴とする蛍光ラン
プ。9. A fluorescent lamp in which one end of two straight tubes is connected directly or indirectly and an electrode is provided at the other end, respectively, in a fluorescent lamp connected to a lead wire taken out from said electrode. A fluorescent lamp, wherein a fuse is arranged near the two electrodes and between the two straight tubes.
管形発光管の前記端部にそれぞれ電極を備えた蛍光ラン
プにおいて、前記電極から取り出されたリード線に接続
した温度ヒューズを前記両電極の近傍であって前記発光
管の２つの端部間に配置したことを特徴とする蛍光ラン
プ。10. A fluorescent lamp having an electrode at each of said ends of a curved tube-shaped arc tube having two ends disposed in close proximity to each other, wherein a thermal fuse connected to a lead wire taken out from said electrode is connected to said both ends. A fluorescent lamp, which is arranged near two electrodes and between two ends of the arc tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10018199A JPH11203934A (en) | 1998-01-13 | 1998-01-13 | Fluorescent lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10018199A JPH11203934A (en) | 1998-01-13 | 1998-01-13 | Fluorescent lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH11203934A true JPH11203934A (en) | 1999-07-30 |
Family
ID=11964975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10018199A Pending JPH11203934A (en) | 1998-01-13 | 1998-01-13 | Fluorescent lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH11203934A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100718959B1 (en) * | 2002-11-22 | 2007-05-16 | 도시바 라이텍쿠 가부시키가이샤 | Fluorescent lamp and luminaire |
| JP2008021520A (en) * | 2006-07-12 | 2008-01-31 | Nec Lighting Ltd | Discharge lamp |
-
1998
- 1998-01-13 JP JP10018199A patent/JPH11203934A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100718959B1 (en) * | 2002-11-22 | 2007-05-16 | 도시바 라이텍쿠 가부시키가이샤 | Fluorescent lamp and luminaire |
| JP2008021520A (en) * | 2006-07-12 | 2008-01-31 | Nec Lighting Ltd | Discharge lamp |
| US7701139B2 (en) | 2006-07-12 | 2010-04-20 | Nec Lighting, Ltd. | Electric discharge lamp |
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