JP3135430B2 - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JP3135430B2 JP3135430B2 JP05218313A JP21831393A JP3135430B2 JP 3135430 B2 JP3135430 B2 JP 3135430B2 JP 05218313 A JP05218313 A JP 05218313A JP 21831393 A JP21831393 A JP 21831393A JP 3135430 B2 JP3135430 B2 JP 3135430B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- arc tube
- metal halide
- outer tube
- halide lamp
- 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 - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】本発明はメタルハライドランプに
関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal halide lamp.
【０００２】[0002]
【従来の技術】メタルハライドランプは、コンパクト・
高演色になるに従って、店舗等の屋内商業エリアで頻繁
に使用される傾向にある。しかし、メタルハライドラン
プには、点灯中の発光管の劣化により寿命末期に発光管
が破損する場合があり、そのときにランプの外管までも
破損・飛散するという問題があった。この問題を解決す
るために外管の外側にフッ素樹脂の皮膜を形成する手段
が知られているが、ランプがコンパクトな場合、外管の
温度がフッ素樹脂の使用可能温度を越えてしまう。その
ために、コンパクトな直管タイプのランプについては、
発光管の周囲に石英等からなる透光性の筒を設けて、発
光管破損時の外管破損を防止する方法が検討されてい
る。2. Description of the Related Art Metal halide lamps are compact.
As the color rendering becomes higher, it tends to be frequently used in indoor commercial areas such as stores. However, the metal halide lamp has a problem that the arc tube may be damaged at the end of life due to deterioration of the arc tube during operation, and at that time, the outer tube of the lamp may be damaged or scattered. Means for forming a fluororesin film on the outside of the outer tube to solve this problem is known. However, when the lamp is compact, the temperature of the outer tube exceeds the usable temperature of the fluororesin. Therefore, for compact straight tube type lamps,
A method of providing a translucent cylinder made of quartz or the like around the arc tube to prevent the outer tube from being damaged when the arc tube is damaged has been studied.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、発光管
破損時の発光管の破片はあらゆる方向に飛散するため、
発光管の周囲に透光性筒を設けただけでは透光性筒の開
口部方向へ飛散した破片が直接外管に到達し、外管を破
損するという問題がある。そして、この透光性筒の開口
部方向への発光管破片の飛散を防止するためには、透光
性筒の開口部に開口部を蓋で覆うことが必要である。こ
のように蓋で覆った構造を採ることによって発光管の破
片が直接外管に衝突することは防止することができる。
ところが、発光管が破損すると発光管の破片によって蓋
が外管の反封止部側へ押し出され、発光管のリード線が
外管内壁に衝突し、外管が破損するという問題が生じ
た。蓋の発光管の破片から受けた発光管破損のエネルギ
ーが、外管内壁にリード線が衝突した一点に集中するた
め、その部分において大きな圧力となり外管が破損す
る。However, when the arc tube is broken, fragments of the arc tube scatter in all directions.
If only the light-transmitting tube is provided around the arc tube, there is a problem in that fragments scattered in the direction of the opening of the light-transmitting tube directly reach the outer tube and damage the outer tube. Then, in order to prevent the arc tube fragments from scattering in the direction of the opening of the light-transmitting tube, it is necessary to cover the opening of the light-transmitting tube with a lid. By adopting the structure covered with the lid as described above, it is possible to prevent the fragments of the arc tube from directly colliding with the outer tube.
However, when the arc tube is damaged, a piece of the arc tube pushes the lid toward the side opposite to the sealing portion of the outer tube, and a lead wire of the arc tube collides with the inner wall of the outer tube, causing a problem that the outer tube is damaged. The energy of the arc tube damage received from the arc tube fragments of the lid is concentrated at one point where the lead wire collides with the inner wall of the outer tube, so that a large pressure is generated at that point and the outer tube is damaged.
【０００４】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、発光管が寿命等によって破損しても、
その破片が飛散して外管が破損することを完全に防止す
ることのできるメタルハライドランプを提供するもので
ある。The present invention has been made to solve such a problem.
An object of the present invention is to provide a metal halide lamp that can completely prevent the fragments from being scattered and damaging the outer tube.
【０００５】[0005]
【課題を解決するための手段】本発明のメタルハライド
ランプは、一端に閉塞部を有する外管内に、内部に一対
の電極を有し両端部から前記電極に接続されたリード線
がそれぞれ導出した発光管と、この発光管を囲繞する透
光性筒とを備え、前記透光性筒の両端開口部には蓋が設
けられ、前記閉塞部側に位置している前記発光管の前記
リード線は前記蓋を貫通して前記閉塞部近傍から前記閉
塞部とは反対側に向かって延在したステム線の前記閉塞
部側の端部に接続され、かつ折曲されている。The metal halide lamp of the present invention has a pair of electrodes inside an outer tube having a closed portion at one end, and lead wires connected to the electrodes are drawn out from both ends. A tube and a light-transmitting tube surrounding the light-emitting tube, lids are provided at both ends of the light-transmitting tube, and the lead wire of the light-emitting tube located on the closing portion side is Penetrate the lid and close the closure from near the closure
The blockage of the stem line extending toward the side opposite to the blockage
It connected to an end of the section side, or folding is music.
【０００６】[0006]
【作用】この構成により、リード線の端部が外管内壁に
衝突することを抑制し、発光管の反口金側リード線が外
管内壁に接触しにくく、また接触してもその衝撃を減少
させることができるようになるため、発光管破損におけ
る外管の破損を防止することができる。According to this structure, the end of the lead wire is prevented from colliding with the inner wall of the outer tube, and the lead wire on the side opposite to the base of the arc tube is hardly brought into contact with the inner wall of the outer tube. since it is possible to, it is possible to prevent the breakage of the outer tube in the arc tube damage.
【０００７】[0007]
【実施例】以下、本発明の一実施例について図面を用い
て説明する。An embodiment of the present invention will be described below with reference to the drawings.
【０００８】本発明実施例である１００Ｗメタルハライ
ドランプは図１に示すように、発光管１が外管２に内蔵
された構造を有し、外管２内には窒素ガスが５００００
パスカル封入されている。発光管１は内径１０ｍｍの石
英管からなり、発光管１の内部には、緩衝ガスとしてア
ルゴンが１００００パスカル、ＤｙＩ3 −ＨｏＩ3 −Ｔ
ｍＩ3 −ＴｌＩ−ＮａＩの組成をもつハロゲン化物が２
ｍｇ、Ｈｇが１２ｍｇ封入されている。発光管１の両端
外面には、ＺｒＯ2 等からなる熱反射膜３が形成されて
いる。発光管１は、２重の透光性筒４に囲繞され、一端
に口金１１およびステム８を有し、他端に閉塞部２ａを
有する外管２に内蔵されている。透光性筒４の両端開口
部にはそれぞれ金属製の蓋５が設けられている。発光管
１は、両端からモリブデンからなるリード線６，７が導
出しており、このリード線６，７をそれぞれ蓋５に貫通
し、ステム８のステム線８ａ，８ｂに接続することによ
って、ステム８に保持されている。外管２の閉塞部２ａ
側のリード線６は閉塞部２ａ近傍から閉塞部２ａとは反
対側に向かって延在したステム線８ｂの閉塞部２ａ側の
端部に接続され、かつ折曲されている。なお、９は絶縁
碍子、１０はゲッターである。As shown in FIG. 1, a 100 W metal halide lamp according to an embodiment of the present invention has a structure in which an arc tube 1 is built in an outer tube 2.
Pascal is enclosed. The arc tube 1 is made of a quartz tube having an inner diameter of 10 mm, the interior of the light emission tube 1, argon 10000 Pascal as a buffer gas, DyI 3 -HoI 3 -T
When the halide having a composition of mI 3 -TlI-NaI is 2
12 mg of Hg and 12 mg are enclosed. A heat reflection film 3 made of ZrO 2 or the like is formed on both outer surfaces of the arc tube 1. The arc tube 1 is surrounded by a double translucent tube 4, has a base 11 and a stem 8 at one end, and is incorporated in an outer tube 2 having a closed portion 2a at the other end. Metallic lids 5 are provided at both ends of the light-transmitting cylinder 4. The arc tube 1 has lead wires 6 and 7 made of molybdenum led out from both ends. The lead wires 6 and 7 penetrate the lid 5 and are connected to the stem wires 8a and 8b of the stem 8, respectively. 8 is held. Closed portion 2a of outer tube 2
The lead wire 6 on the side is close to the closed portion 2a from near the closed portion 2a.
Of the closed portion 2a of the stem wire 8b extending toward the opposite side.
Connected to the end and bent. In addition, 9 is an insulator, and 10 is a getter.
【０００９】次に、本発明実施例のランプと従来のラン
プとの発光管１の破損時における外管の破損の発生具合
いの比較を行なうために、発光管１の強制破損実験をお
こなった。Next, in order to compare the occurrence of damage to the outer bulb when the arc tube 1 is damaged between the lamp of the embodiment of the present invention and the conventional lamp, a forced damage experiment of the arc tube 1 was performed.
【００１０】なお、従来のメタルハライドランプは図２
に示すように本発明実施例のメタルハライドランプと同
様な構造を有しているが、外管２の閉塞部２ａ側に位置
しているリード線１２は発光管１の軸方向にまっすぐに
設けられている。The conventional metal halide lamp is shown in FIG.
Has the same structure as the metal halide lamp of the embodiment of the present invention, but the lead wire 12 located on the side of the closed portion 2a of the outer tube 2 is provided straight in the axial direction of the arc tube 1. ing.
【００１１】また上記した実験の方法は、ランプを安定
点灯させた後に、安定器を短絡し、発光管を破損させる
方法をとった。そして実験の結果、従来のランプは３０
本中２本が外管の反封止部側が破損が確認されたのに対
し、本発明実施例のランプにおいては３０本とも外管の
破損は確認されなかった。In the method of the above-mentioned experiment, a method is adopted in which the ballast is short-circuited after the lamp is stably turned on, and the arc tube is damaged. And as a result of the experiment, the conventional lamp was 30
Two of the lamps were found to be damaged on the side opposite to the sealing portion of the outer tube, whereas no damage was found to the outer tube in any of the 30 lamps of the present invention.
【００１２】以上のように、本発明実施例メタルハライ
ドランプは、一端に閉塞部２ａを有する外管２内に、内
部に一対の電極を有し両端から前記電極に接続されたリ
ード線６，７がそれぞれ導出し、かつ内部に金属ハロゲ
ン化物および緩衝ガスが封入された発光管１と、この発
光管１を囲繞するように少なくとも１つの透光性筒４と
が設けられ、透光性筒４の両端開口部には蓋５が設けら
れ、かつ外管２内で閉塞部２ａ側に位置している発光管
１のリード線６がステム線８ｂに接続され、かつ折曲し
ているため、発光管１が寿命等によって破損してもその
破片等によって外管２が破損するのを防止することがで
きる。As described above, the metal halide lamp according to the embodiment of the present invention has a pair of electrodes inside the outer tube 2 having the closed portion 2a at one end, and the lead wires 6, 7 connected to the electrodes from both ends. Are provided, and an arc tube 1 in which a metal halide and a buffer gas are sealed, and at least one translucent tube 4 surrounding the arc tube 1 are provided. The lid 5 is provided at the opening at both ends, and the lead wire 6 of the arc tube 1 located on the side of the closing portion 2a in the outer tube 2 is connected to the stem wire 8b and bent. even arc tube 1 is damaged by the life and the like can be prevent from the outer tube 2 is damaged by the debris or the like.
【００１３】なお、上記実施例では、リード線６，７に
モリブデン線を用いているが、タングステン等の他の材
質を用いてもよい。また、蓋５に金属製のものを用いて
いるが、セラミック等の他の材質を用いてもよい。さら
に発光管１や透光性筒４に関しても、石英以外の材質を
用いてもよい。In the above embodiment, molybdenum wires are used for the lead wires 6 and 7, but other materials such as tungsten may be used. Although the cover 5 is made of metal, another material such as ceramic may be used. Further, the arc tube 1 and the translucent tube 4 may be made of a material other than quartz.
【００１４】[0014]
【発明の効果】以上説明したように、本発明のメタルハ
ライドランプは、発光管が寿命等によって破損しても、
その破片等によって外管が破損するのを防止することが
できる。As described above, according to the metal halide lamp of the present invention, even if the arc tube is damaged due to its life, etc.
It is possible to prevent that the outer tube is broken by the broken pieces and the like.
【図１】本発明の一実施例であるメタルハライドランプ
の一部切欠正面図FIG. 1 is a partially cutaway front view of a metal halide lamp according to an embodiment of the present invention.
【図２】従来のメタルハライドランプの一部切欠正面図FIG. 2 is a partially cutaway front view of a conventional metal halide lamp.
１ 発光管 ２ 外管 ２ａ 閉塞部 ４ 透光性筒 ５ 蓋 ６，７ リード線 ８ ステム ８ａ，８ｂ ステム線 DESCRIPTION OF SYMBOLS 1 Arc tube 2 Outer tube 2a Closed part 4 Translucent cylinder 5 Lid 6,7 Lead wire 8 Stem 8a, 8b Stem wire
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 実開 平５−11310（ＪＰ，Ｕ) 実開 平４−81347（ＪＰ，Ｕ) 実開 昭63−141554（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01J 61/34 H01J 61/50 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-5-11310 (JP, U) JP-A 4-81347 (JP, U) JP-A 63-141554 (JP, U) (58) Survey Field (Int.Cl. 7 , DB name) H01J 61/34 H01J 61/50
Claims (1)
一対の電極を有し両端部から前記電極に接続されたリー
ド線がそれぞれ導出した発光管と、この発光管を囲繞す
る透光性筒とを備え、前記透光性筒の両端開口部には蓋
が設けられ、前記閉塞部側に位置している前記発光管の
前記リード線は前記蓋を貫通して前記閉塞部近傍から前
記閉塞部とは反対側に向かって延在したステム線の前記
閉塞部側の端部に接続され、かつ折曲されていることを
特徴とするメタルハライドランプ。1. An arc tube having a pair of electrodes inside an outer tube having a closed portion at one end, and lead wires connected to the electrodes from both ends, respectively, and a light-transmitting tube surrounding the arc tube. And a lid is provided at both ends of the light-transmitting cylinder, and the lead wire of the arc tube located on the side of the closed part penetrates the lid and the lead wire. From near the obstruction to the front
Said stem line extending toward the opposite side to the serial occlusion
It connected to an end of the closed portion side, or folding a metal halide lamp which is characterized in that it is music.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05218313A JP3135430B2 (en) | 1993-09-02 | 1993-09-02 | Metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP05218313A JP3135430B2 (en) | 1993-09-02 | 1993-09-02 | Metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0773854A JPH0773854A (en) | 1995-03-17 |
| JP3135430B2 true JP3135430B2 (en) | 2001-02-13 |
Family
ID=16717895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP05218313A Expired - Fee Related JP3135430B2 (en) | 1993-09-02 | 1993-09-02 | Metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3135430B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5493167A (en) * | 1994-05-03 | 1996-02-20 | General Electric Company | Lamp assembly with shroud employing insulator support stops |
-
1993
- 1993-09-02 JP JP05218313A patent/JP3135430B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0773854A (en) | 1995-03-17 |
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