JPH0422536Y2 - - Google Patents
Info
- Publication number
- JPH0422536Y2 JPH0422536Y2 JP1115584U JP1115584U JPH0422536Y2 JP H0422536 Y2 JPH0422536 Y2 JP H0422536Y2 JP 1115584 U JP1115584 U JP 1115584U JP 1115584 U JP1115584 U JP 1115584U JP H0422536 Y2 JPH0422536 Y2 JP H0422536Y2
- Authority
- JP
- Japan
- Prior art keywords
- fuse
- tube
- sealed
- arc tube
- lead wire
- 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
- 238000005253 cladding Methods 0.000 claims description 23
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 16
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 229910052708 sodium Inorganic materials 0.000 description 5
- 239000011734 sodium Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 230000009172 bursting Effects 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical group [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
- Fuses (AREA)
- Discharge Lamps And Accessories Thereof (AREA)
Description
【考案の詳細な説明】
〔考案の技術分野〕
本考案はヒユーズを内蔵した高圧金属蒸気放電
灯に関する。[Detailed Description of the Invention] [Technical Field of the Invention] The present invention relates to a high-pressure metal vapor discharge lamp with a built-in fuse.
一般に高圧金属蒸気放電灯は発光管自体で電流
を制限する機能をもたないので、限流器としての
安定器と組み合わせて使用される。安定器は鉄心
の上に絶縁被覆を施した金属線を多層に巻回した
チヨークコイルが多用され、その他コンデンサを
並用したもの等が使用されている。
In general, high-pressure metal vapor discharge lamps do not have the function of limiting current in the arc tube itself, so they are used in combination with a ballast as a current limiter. Stabilizers are often made of chiyoke coils, which are made by winding insulated metal wire in multiple layers around an iron core, and other devices that also use capacitors.
ところで安定器の寿命は通常８年ないし10年と
されており、寿命原因の多くは絶縁物の劣化によ
る限流機能の低下である。たとえば高圧ナトリウ
ムランプは始動電圧が高いので安定器またはラン
プの外管内に収容したパルス発生器から始動用高
圧パルスを印加して起動させるようになつてお
り、この高圧パルスのために安定器の絶縁物劣化
を早める傾向があり、かつ、劣化をはじめた安定
器を高圧パルスによつて強制的に絶縁破壊させる
ことがある。 By the way, the lifespan of a ballast is usually 8 to 10 years, and the main cause of the lifespan is a decline in the current limiting function due to deterioration of the insulator. For example, high-pressure sodium lamps have a high starting voltage, so they are started by applying a starting high-voltage pulse from a ballast or a pulse generator housed inside the lamp's outer bulb. It tends to accelerate material deterioration, and high-voltage pulses can force dielectric breakdown of ballasts that have begun to deteriorate.
安定器が寿命末期あるいは他の原因で限流機能
を失うとランプには多大な電流が流れる。この結
果、発光管に投与されるランプ入力が急増し、発
光管内の封入物の圧力が急速に高まるため発光管
が破裂し、さらに外管も破損させてランプ自体ま
たは破片が落下するなどが心配される。 If the ballast loses its current limiting function at the end of its life or for other reasons, a large amount of current will flow through the lamp. As a result, the lamp input applied to the arc tube increases rapidly, and the pressure of the inclusions inside the arc tube increases rapidly, causing the arc tube to burst.There is also concern that the outer bulb may also be damaged, causing the lamp itself or debris to fall. be done.
このような危険を防止するため、たとえば特開
昭51−96186号公報には外管の開口端部を封着す
るステムから口金のアイレツト端子に至るリード
線の一部にヒユーズ機能をもつ導電線を使用する
ことによつて、過電流が流れた場合に上記ヒユー
ズ機能をもつ導電線を瞬時に溶断させて発光管の
破裂を防止する手段が示されている。しかしなが
ら、口金内にヒユーズ機能をもつ導電線を配置す
るには口金内容積が小さくて作業性が悪いうえ
に、大気と同一雰囲気であるため点灯時の昇温に
よりヒユーズが酸化されやすいという欠点があ
る。このため実開昭58−146353に於て示される様
に外管のステムから外管内に導入されて発光管に
接続される内部リード線の少なくとも一部にヒユ
ーズ機能をもたせることによつて上記欠点を回避
した手段もあるが、この場合は溶断した高温のヒ
ユーズが外管内面に飛散して外管を破損させる危
険が生じる懼れがあつたり、また昇温したヒユー
ズが垂れ下がり（いわゆるサグ現象）、他の導電
部材に接触して短絡事故を生じる懼れもあつた。 In order to prevent this kind of danger, for example, Japanese Patent Application Laid-Open No. 51-96186 discloses a conductive wire with a fuse function as part of the lead wire from the stem that seals the open end of the outer tube to the eyelet terminal of the cap. A method has been shown in which, when an overcurrent flows, the conductive wire having the fuse function is instantly fused to prevent the arc tube from bursting. However, placing a conductive wire with a fuse function inside the cap has the disadvantage that the internal volume of the cap is small, making it difficult to work, and since the atmosphere is the same as the atmosphere, the fuse is easily oxidized by the temperature rise during lighting. be. Therefore, as shown in Utility Model Application No. 58-146353, the above-mentioned drawbacks can be solved by providing a fuse function to at least a part of the internal lead wire that is introduced from the stem of the outer tube into the outer tube and connected to the arc tube. There are ways to avoid this, but in this case, there is a risk that the blown high-temperature fuse will scatter onto the inner surface of the outer tube and damage it, and the heated fuse will sag (so-called sag phenomenon). There was also a fear that it would come into contact with other conductive members and cause a short circuit.
本考案は上記事情を考慮してなされたもので、
外管内にヒユーズを設け、ヒユーズに過電流が流
れて溶断した際に外管内面にまで飛散することが
なく、また昇温して垂れ下がり短絡事故を生じる
ことのない高圧金属蒸気放電灯を提供することを
目的とする。
This invention was made in consideration of the above circumstances,
To provide a high-pressure metal vapor discharge lamp which is provided with a fuse inside the outer bulb and which does not scatter to the inner surface of the outer bulb when an overcurrent flows through the fuse and blows it out, and which does not cause a short-circuit accident due to temperature rise and drooping. The purpose is to
本考案は発光管に接続される内部リード線にヒ
ユーズを介在させることによつて発光管の過電流
による破裂を防止するとともに、さらに上記ヒユ
ーズを絶縁被覆管に収納し、かつ、絶縁被覆管を
一端を封止し、他端開口部には閉塞体を遊嵌させ
ることによつてヒユーズ溶断時の外管破損を防止
するようにしたものである。
The present invention prevents the arc tube from bursting due to overcurrent by interposing a fuse in the internal lead wire connected to the arc tube, and also houses the fuse in an insulated cladding tube. By sealing one end and loosely fitting a closure into the opening at the other end, damage to the outer tube is prevented when the fuse blows.
以下本考案の一実施例を図面にもとづき説明す
る。
An embodiment of the present invention will be described below based on the drawings.
第１図は本考案に係る高圧ナトリウムランプを
示し、１は外管でそのネツク部２をステム３で閉
封し、口金４を嵌着してある。５は透光性セラミ
クス管からなる発光管で、その両端部には電極６
ａ，６ｂを対設し、内部には所定量の始動用希ガ
ス、水銀およびナトリウムが封入されている。発
光管５の両端はホルダ７ａ，７ｂによつて支持さ
れ、一方のホルダ７ａは電極６ａと電気的に接続
され、他方のホルダ７は絶縁物８を介して支持し
ている。また、ホルダ７ａ，７ｂは導電線兼用の
サポート９に接続され、このサポート９はステム
３に封着したウエルズ１０に接続されている。な
お、ステム３に封着した他方のウエルズ１１には
内部リード線１２を介して電極６ｂが接続されて
いる。 FIG. 1 shows a high-pressure sodium lamp according to the present invention, in which 1 is an outer tube whose neck 2 is sealed with a stem 3, and a cap 4 is fitted therein. Reference numeral 5 denotes an arc tube made of a translucent ceramic tube, with electrodes 6 at both ends.
A and 6b are arranged opposite each other, and a predetermined amount of starting rare gas, mercury, and sodium are sealed inside. Both ends of the arc tube 5 are supported by holders 7a and 7b, one holder 7a is electrically connected to the electrode 6a, and the other holder 7 is supported via an insulator 8. Further, the holders 7a and 7b are connected to a support 9 which also serves as a conductive wire, and this support 9 is connected to a well 10 sealed to the stem 3. Note that an electrode 6b is connected to the other well 11 sealed to the stem 3 via an internal lead wire 12.
１３は発光管５の管長方向に沿わせて設けた近
接導体で、その一端はホルダ７ａに遊動自在に支
持され、他端はバイメタル片１４を介してサポー
ト９に支持され、ランプ始動前は発光管５の外面
に接触もしくは近接して電極６ｂとの電位傾度を
大とし、ランプ始動後には発光管５の発熱による
バイメタル片１４の熱変形により発光管５の外面
から離間する。 Reference numeral 13 denotes a proximal conductor provided along the length of the arc tube 5, one end of which is freely supported by the holder 7a, the other end supported by the support 9 via a bimetal piece 14, and does not emit light before starting the lamp. The bimetallic piece 14 contacts or approaches the outer surface of the arc tube 5 to increase the potential gradient with the electrode 6b, and after the lamp is started, the bimetal piece 14 is thermally deformed due to the heat generated by the arc tube 5 and is separated from the outer surface of the arc tube 5.
また、外管１内には始動装置としてフイラメン
ト１５と常閉形バイメタルスイツチ１６が収容さ
れ、絶縁基台１７に支持されたフイラメント１５
に対面してバイメタルスイツチ１６が配設されて
いる。フイラメント１５の一端は接続線１８を介
して内部リード線１２に接続され、他端はバイメ
タルスイツチ１６の一端に接続され、さらにバイ
メタルスイツチ１６の他端は接続線１９を介して
サポート９に接続されている。したがつて、フイ
ラメント１５とバイメタルスイツチ１６とは直列
回路を構成し、しかもこの直列回路は発光管５に
対し並列に接続されている。 Further, a filament 15 and a normally closed bimetal switch 16 are housed in the outer tube 1 as a starting device, and the filament 15 is supported on an insulating base 17.
A bimetal switch 16 is arranged facing the. One end of the filament 15 is connected to the internal lead wire 12 via a connecting wire 18, the other end is connected to one end of a bimetallic switch 16, and the other end of the bimetallic switch 16 is connected to the support 9 via a connecting wire 19. ing. Therefore, the filament 15 and the bimetal switch 16 form a series circuit, and this series circuit is connected in parallel to the arc tube 5.
なお、上記内部リード線１２にはたとえばニツ
ケルやニツケル合金からなるヒユーズ２０を介在
させ、このヒユーズ２０は第２図および第３図に
示すように耐熱性電気絶縁物たとえば硬質ガラス
からなる絶縁被覆管２１内に収納され、かつ、絶
縁被覆管２１の一端開口部はたとえば硬質ガラス
製の閉塞体２２Ａを固着することによつて封止さ
れ、一方、他端開口部には同じく硬質ガラス製の
閉塞体２２Ｂが固着することなく遊嵌されてい
て、上記ヒユーズ２０はその両端に接続したたと
えばタングステン製のヒユーズ取り出し線２３，
２３を介し両閉塞体２２Ａ，２２Ｂによつて絶縁
被覆管２１の中心部に支持されている。 A fuse 20 made of, for example, nickel or a nickel alloy is interposed in the internal lead wire 12, and as shown in FIGS. 21, and one end opening of the insulating cladding tube 21 is sealed by fixing a closure body 22A made of, for example, hard glass, while the other end opening is sealed with a closure body 22A made of hard glass as well. The body 22B is loosely fitted without being fixed, and the fuse 20 has a fuse lead wire 23 made of, for example, tungsten connected to both ends of the fuse 20.
It is supported at the center of the insulating cladding tube 21 by both closing bodies 22A and 22B via a cable 23.
このようなランプはチヨークコイル形安定器を
介して交流電源に接続して使用される。 Such lamps are used by being connected to an alternating current power source via a chiyoke coil type ballast.
次に上記ランプを使用して過電流を流してみた
ところ、比較的小さな過電流の場合にはヒユーズ
２０は垂れ下がつても絶縁被覆管２１の存在によ
つて外管１内に収納した他の金属部材と接触して
短絡するような事態は発生せず、また大きな過電
流が流れてヒユーズ２０が溶融飛散しても、ヒユ
ーズ２０は絶縁被覆管２１で囲まれ、しかもその
一端部は封止され、他端部は僅かの隙間を残すだ
けで遊嵌された閉塞体２２Ｂで塞がれているか
ら、高温の溶融ヒユーズが絶縁被覆管２１の外へ
飛散する余地はなく、したがつて外管１の破損は
単に両端を開口した絶縁被覆管でヒユーズ２０を
囲つたものよりも一層効果的に防止することがで
きる。しかも、上記両端を開口した絶縁被覆管だ
けでヒユーズ２０を囲つた場合には絶縁被覆管を
所定の位置に止めておくには別に支持部材を要す
るが、本考案によれば絶縁被覆管２１はその一端
封止部に封着されたヒユーズ取り出し線２３を介
し内部リード線１２によつて支持されて移動する
ことがないので、特に支持部材を必要としない利
点もある。 Next, when an overcurrent was applied using the above lamp, it was found that even though the fuse 20 drooped down in the case of a relatively small overcurrent, it was housed inside the outer tube 1 due to the presence of the insulating sheath tube 21. Even if a large overcurrent flows and the fuse 20 melts and scatters, the fuse 20 is surrounded by an insulating cladding tube 21, and one end of the fuse 20 is sealed. Since the other end is closed with a loosely fitted closure member 22B leaving only a slight gap, there is no room for the high temperature molten fuse to scatter outside the insulating cladding tube 21. Breakage of the outer tube 1 can be more effectively prevented than by simply surrounding the fuse 20 with an insulating sheath tube with both ends open. Moreover, if the fuse 20 is surrounded only by the insulating cladding tube with both ends open, a separate supporting member is required to keep the insulating cladding tube in a predetermined position, but according to the present invention, the insulating cladding tube 21 is Since it is supported by the internal lead wire 12 through the fuse lead wire 23 sealed at one end of the sealed portion and does not move, it also has the advantage of not requiring any particular support member.
また、絶縁被覆管２１の一端部は封止するが、
他端開口部は閉塞体２２Ｂを固着せずに単に遊嵌
しただけなので、絶縁被覆管２１より熱膨張率の
大きな金属からなるヒユーズ２０や取り出し線２
３が昇温時に熱膨張してその長さが延びても、そ
の延びに追従して上記遊嵌しただけの閉塞体２２
Ｂも移動してヒユーズ２０や取り出し線２３の熱
膨張を吸収するので、封止部にクラツクが発生す
ることもない。 In addition, one end of the insulating cladding tube 21 is sealed;
Since the other end opening is not fixed with the closing body 22B and is simply loosely fitted, the fuse 20 and the lead wire 2 made of a metal with a higher coefficient of thermal expansion than the insulating cladding tube 21 can be used.
3 thermally expands when the temperature rises and its length increases, the closure body 22 that is just loosely fitted follows the length.
Since B also moves and absorbs the thermal expansion of the fuse 20 and lead wire 23, cracks do not occur in the sealing portion.
第４図は他の実施例の要部すなわちヒユーズ２
０の取り付け部を示すもので、先の実施例と同一
部分は同一符号を付して説明は省略する。先の実
施例では絶縁被覆管２１の一端部を閉塞体２２Ａ
により封止したが、本実施例では絶縁被覆管２１
の一端部自体を加熱溶融して封止し、閉塞体２２
Ａを使用せずに封止部２１Ａを形成したものであ
り、絶縁被覆管２１として硬質ガラスや石英ガラ
スを使用した場合にはこのような構造とすること
もできる。 FIG. 4 shows the main part of another embodiment, namely fuse 2.
0, and the same parts as in the previous embodiment are given the same reference numerals and the explanation thereof will be omitted. In the previous embodiment, one end of the insulating cladding tube 21 is connected to the closure body 22A.
However, in this example, the insulating cladding tube 21
One end itself is heated and melted to seal the closure body 22.
The sealing portion 21A is formed without using A, and such a structure can also be used when hard glass or quartz glass is used as the insulating cladding tube 21.
また、絶縁被覆管２１の一端封止部は完全な気
密性を要求されるものではないが、封止部の材質
と封止部に封着さえるヒユーズ２０の取り出し線
２３の材質との組み合せは熱膨張率の近いものが
好ましく、たとえば（硬質ガラス−タングステ
ン）、（石英ガラス−モリブデン）、（アルミナセラ
ミクス−ガラスソルダを介してニオブ）等の組み
合せが特には適するものである。 Furthermore, although the sealed portion at one end of the insulating cladding tube 21 is not required to be completely airtight, the combination of the material of the sealed portion and the material of the lead wire 23 of the fuse 20 sealed to the sealed portion is Those having similar coefficients of thermal expansion are preferred, and combinations such as (hard glass-tungsten), (silica glass-molybdenum), (alumina ceramics-niobium via glass solder) are particularly suitable.
なお、閉塞体２２Ａ，２２Ｂには金属を使用す
ることもできる。 Note that metal can also be used for the closure bodies 22A and 22B.
さらに、ヒユーズ２０の設置位置も上記実施例
に限られるものではなく、たとえば第１図におけ
る外管１のトツプ側（口金側とは反対側。）の電
極６ａと導電線兼用のサポート９とを接続する内
部リード線を設け、この内部リード線に上記絶縁
被覆管２１に収納したヒユーズ２０を介在させる
ようにしても良く、さらにまたヒユーズの取り出
し線２３自体を内部リード線兼用としても良い。 Furthermore, the installation position of the fuse 20 is not limited to the above embodiment, and for example, the electrode 6a and the support 9, which also serves as a conductive wire, on the top side (opposite the base side) of the outer tube 1 in FIG. An internal lead wire for connection may be provided, and the fuse 20 housed in the insulating sheath tube 21 may be interposed between the internal lead wires, and the fuse lead wire 23 itself may also be used as the internal lead wire.
しかも、適用できるランプ品種も高圧ナトリウ
ムランプに限らず、メタルハライドランプ等の他
の高圧金属蒸気放電灯であつても良い。 Furthermore, the types of lamps that can be applied are not limited to high-pressure sodium lamps, but may also be other high-pressure metal vapor discharge lamps such as metal halide lamps.
以上詳述したように本考案に係る高圧金属蒸気
放電灯は、ヒユーズを絶縁被覆管内に収納すると
ともに絶縁被覆管の一端は封止し、他端開口部に
は閉塞体を遊嵌するように配設したので、過電流
が流れてヒユーズが溶断飛散しても絶縁被覆管お
よび閉塞体によつて遮断されるので高温の溶融ヒ
ユーズが外管にまで飛散してこれを破壊するよう
な事態を防止できる。また溶断しないまでも昇温
時にヒユーズが垂れ下がつた場合でも他の外管内
金属部材と接触して短絡事故を生じることもな
い。
As detailed above, in the high-pressure metal vapor discharge lamp according to the present invention, the fuse is housed within the insulating cladding tube, one end of the insulating cladding tube is sealed, and a closing member is loosely fitted into the opening at the other end. With this arrangement, even if an overcurrent flows and the fuse blows out, it will be cut off by the insulating cladding and the closing body, thereby preventing the situation where the high-temperature molten fuse blows to the outer tube and destroys it. It can be prevented. In addition, even if the fuse does not melt and sag when the temperature rises, it will not come into contact with other metal members in the outer tube and cause a short circuit accident.
さらに、ヒユーズは絶縁被覆管と閉塞体とで囲
われているので近接する対向電位のサポートとの
放電防止や外管の封止工程およびランプ点灯中の
発光管からの放熱によるヒユーズ特性の変動の低
減などの効果もある。しかも絶縁被覆管の開口部
は閉塞体を固着せずに遊嵌しただけなので、昇温
時にヒユーズの熱膨張に追従して閉塞体も移動す
るので、絶縁被覆管の封止部に無理を生じてクラ
ツクを発生するようなこともないし、そのうえ絶
縁被覆管の一端部を封止するようにしたので別体
の絶縁被覆管の支持部材も不要となり、ランプの
組み立てが容易となる等多くの利点を有するもの
である。 Furthermore, since the fuse is surrounded by an insulating cladding tube and a closing body, it prevents electrical discharge from supporting the opposing potential in the vicinity, and prevents fluctuations in fuse characteristics due to the sealing process of the outer bulb and heat dissipation from the arc tube during lamp lighting. There are also effects such as reduction. In addition, since the closing body is only loosely fitted into the opening of the insulation cladding tube without being fixed, the closing body also moves following the thermal expansion of the fuse when the temperature rises, causing strain on the sealed portion of the insulation cladding tube. Moreover, since one end of the insulation cladding tube is sealed, there is no need for a separate supporting member for the insulation cladding tube, making it easier to assemble the lamp, among other advantages. It has the following.
第１図は本考案の一実施例である高圧ナトリウ
ムランプの正面図、第２図は同じくその要部の斜
視図、第３図は同じく要部の縦断面図、第４図は
他の実施例の要部縦断面図をそれぞれ示す。
１……外管、３……ステム、４……口金、５…
…発光管、９……サポート、１２……内部リード
線、２０……ヒユーズ、２１……絶縁被覆管、２
２Ａ，２２Ｂ……閉塞体。
Fig. 1 is a front view of a high-pressure sodium lamp which is an embodiment of the present invention, Fig. 2 is a perspective view of the main parts thereof, Fig. 3 is a longitudinal sectional view of the main parts, and Fig. 4 is another embodiment. The main part longitudinal cross-sectional views of the examples are shown respectively. 1... Outer tube, 3... Stem, 4... Cap, 5...
...Earth tube, 9...Support, 12...Internal lead wire, 20...Fuse, 21...Insulation coated tube, 2
2A, 22B... Obstruction body.
Claims (1)
発光管を支持してなる高圧金属蒸気放電灯におい
て、上記ステムから外管内に導入され発光管に接
続される内部導入線に絶縁被覆管に収納されたヒ
ユーズを介在させ、かつ、上記絶縁被覆管の一端
部は封止し、他端開口部には閉塞体を遊嵌したこ
とを特徴とする高圧金属蒸気放電灯。 In a high-pressure metal vapor discharge lamp in which an arc tube is supported through a stem within an outer bulb with a cap attached to one end, an internal lead-in wire that is introduced from the stem into the outer bulb and connected to the arc tube is housed in an insulated coated tube. A high-pressure metal vapor discharge lamp characterized in that a fuse is interposed therebetween, one end of the insulating cladding tube is sealed, and a closing member is loosely fitted in an opening at the other end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1115584U JPS60123953U (en) | 1984-01-31 | 1984-01-31 | high pressure metal vapor discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1115584U JPS60123953U (en) | 1984-01-31 | 1984-01-31 | high pressure metal vapor discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60123953U JPS60123953U (en) | 1985-08-21 |
| JPH0422536Y2 true JPH0422536Y2 (en) | 1992-05-22 |
Family
ID=30493010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1115584U Granted JPS60123953U (en) | 1984-01-31 | 1984-01-31 | high pressure metal vapor discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60123953U (en) |
-
1984
- 1984-01-31 JP JP1115584U patent/JPS60123953U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60123953U (en) | 1985-08-21 |
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