JPH046742A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPH046742A JPH046742A JP10724890A JP10724890A JPH046742A JP H046742 A JPH046742 A JP H046742A JP 10724890 A JP10724890 A JP 10724890A JP 10724890 A JP10724890 A JP 10724890A JP H046742 A JPH046742 A JP H046742A
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- spiral
- emitting tube
- electrode
- metal halide
- 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.)
- Granted
Links
- 229910001507 metal halide Inorganic materials 0.000 title claims description 17
- 150000005309 metal halides Chemical class 0.000 title claims description 17
- 238000007789 sealing Methods 0.000 claims description 5
- 238000009877 rendering Methods 0.000 abstract description 5
- 150000004820 halides Chemical class 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material 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
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Landscapes
- Discharge Lamp (AREA)
Abstract
Description
【発明の詳細な説明】 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。[Detailed description of the invention] Industrial applications The present invention relates to metal halide lamps.
従来の技術
従来、ハロゲン化物の一種としてノ１０ゲン化錫を封入
したメタルハライドランプの電極は、第３図（Ａ）、（
Ｂ）に示すように、単一の線からなる螺旋状部分１０ａ
とこれに連なる直線部分１０ｂとからなり、この直線部
分は中心軸が螺旋状部分１０ａの中心軸と一致する関係
になっている。そして、両口金形メタルハライドランプ
の場合には、上記の構成を有する一対の電極が発光管の
両端部に封着され、この発光管が両端に口金を取り付け
た外管内に設けられている。Conventional technology Conventionally, the electrodes of metal halide lamps filled with tin 10genide as a type of halide were as shown in Fig. 3 (A), (
As shown in B), a spiral portion 10a consisting of a single line
and a straight line portion 10b connected thereto, and the center axis of this straight line portion coincides with the center axis of the spiral portion 10a. In the case of a double-capped metal halide lamp, a pair of electrodes having the above structure are sealed to both ends of an arc tube, and this arc tube is provided in an outer bulb with caps attached to both ends.
ところで、かかるメタルハライドランプにおいては、色
温度を２５００に〜３５００に、平均演色評価数を７５
〜８０とするために、発光管内壁の最冷部の温度を高め
てハロゲン化物の蒸気圧を上昇させる必要がある。By the way, in such a metal halide lamp, the color temperature is set to 2500 to 3500, and the average color rendering index is set to 75.
-80, it is necessary to increase the temperature of the coldest part of the inner wall of the arc tube to increase the vapor pressure of the halide.
発明が解決しようとする課題
従来、かかる発光管内壁の最冷部の温度を高めるために
、発光管の内容積を小さくし管壁負荷を大きくしていた
が、その結果、発光管管壁と電極およびアーク柱との距
離が短くなって発光管管壁の最高温度部の温度が非常に
高（なり、そのため、発光管の膨張・破損や、発光管材
料からの不純物の発生により、ランプの動程特性への悪
影響が生じるという問題があった。Problems to be Solved by the Invention Conventionally, in order to increase the temperature of the coldest part of the inner wall of the arc tube, the internal volume of the arc tube was reduced and the load on the tube wall was increased. As the distance between the electrode and the arc column becomes shorter, the temperature at the hottest part of the wall of the arc tube becomes extremely high (which causes the arc tube to expand and break, as well as the generation of impurities from the arc tube material, causing the lamp to deteriorate). There was a problem in that it had an adverse effect on the travel characteristics.
本発明はこのような問題点を解決するためになされたち
ので、動程特性が安定しかつ演色性にすぐれたメタルハ
ライドランプを提供するものである。The present invention has been made to solve these problems, and therefore provides a metal halide lamp that has stable movement characteristics and excellent color rendering properties.
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、両端に螺旋状部分と
この螺旋状部分の後端に連なる直線部分とからなる一対
の電極を有し内部に金属ハロゲン化物か封入された発光
管を備え、前記電極の直線部分は、中心軸が前記電極の
螺旋状部分の中心軸上から外れた位置にあって、前記発
光管の中心軸上の封着部に封着されているものである。Means for Solving the Problems The metal halide lamp of the present invention has a pair of electrodes consisting of a spiral part at both ends and a straight part connected to the rear end of the spiral part, and has a metal halide lamp sealed inside. A tube, the linear portion of the electrode has a central axis located off the central axis of the spiral portion of the electrode, and is sealed to a sealing portion on the central axis of the arc tube. It is.
作用
この構成により、ランプを水平点灯した時、電極の螺旋
状部分を発光管の中心軸に対して下側に片寄らせて配置
することができる。したかつて、発光管下方部に位置す
るノ・ロゲン化物と電極およびアーク柱との距離が短く
なり、／飄ロゲン化物の温度を高めることができるため
、発光管内のハロゲン化物の蒸気圧を上昇させることが
きる。また、発光管の最高温度部分となる上方部と電極
およびアーク柱との距離が長くなり、最高４度部分の温
度を低下させることができるため、発光管の膨張・破損
、および発光管材料からの不純物の発生を抑制すること
ができる。Effect: With this configuration, when the lamp is lit horizontally, the spiral portion of the electrode can be arranged to be biased downward with respect to the central axis of the arc tube. In the past, the distance between the halide located at the lower part of the arc tube and the electrode and arc column became shorter, increasing the temperature of the halide and increasing the vapor pressure of the halide in the arc tube. I can do things. In addition, the distance between the upper part of the arc tube, which is the highest temperature part, and the electrode and arc column is increased, and the temperature at the maximum 4 degrees can be lowered. The generation of impurities can be suppressed.
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
。EXAMPLE Hereinafter, an example of the present invention will be described with reference to the drawings.
第２図に示すように、本発明の一実施例である７０Ｗの
両口金形メタルハライドランプは、両端に一対の電極１
，２を有する発光管３が外管４に内蔵された構造を有す
る。電極１，２は同一の構成を有しており、電極１のみ
を第１図（Ａ）、（Ｂ）に示している。電極１は単一の
線からなる螺旋状部分１ａとこの螺旋状部分の後端に連
なる直線部分１ｂとからなり、直線部分１ｂはその中心
軸か螺旋状部分１ａの中心軸Ｘ−Ｘ上から外れた位置に
あって、発光管３の中心軸上の封着部３ａに封着されて
いる。この場合、直線部分１ｂは螺旋状部分１ａが形成
する円筒面の延長線上に位置している。したがって、電
極Ｉの螺旋状部分１ａは発光管３の中心軸に対して下側
に片寄って位置することとなる。発光管３は内径が９Ｉ
ＩＷ１１の石英からなり、内部には緩衝カスとしてアル
ゴンが約１００ＴｏｒｒＸＮａｌ：Ｔ２１：Ｉｎ１３
：５ｎ１２の組成からなる金属ハロゲン化物か１．３■
、錫メタルが１．０■、および水銀が１４．５ｍｇそれ
ぞれ封入されている。発光管３の両端部外面にはＺｒＯ
２等からなる熱反射膜５．６が形成されている。また、
外管４の両端には口金７，８が固着されている。As shown in FIG. 2, a 70W double-ended metal halide lamp, which is an embodiment of the present invention, has a pair of electrodes at both ends.
, 2 is built into an outer tube 4. Electrodes 1 and 2 have the same configuration, and only electrode 1 is shown in FIGS. 1(A) and 1(B). The electrode 1 consists of a spiral part 1a made of a single wire and a straight part 1b connected to the rear end of this spiral part. It is located at a detached position and is sealed to a sealing portion 3a on the central axis of the arc tube 3. In this case, the straight portion 1b is located on an extension of the cylindrical surface formed by the spiral portion 1a. Therefore, the spiral portion 1a of the electrode I is positioned downward with respect to the central axis of the arc tube 3. The inner diameter of the arc tube 3 is 9I.
Made of IW11 quartz, with argon inside as a buffer gas at approximately 100 TorrXNal:T21:In13
: Metal halide with a composition of 5n12 or 1.3■
, 1.0 mg of tin metal, and 14.5 mg of mercury are each sealed. The outer surface of both ends of the arc tube 3 is coated with ZrO.
A heat reflecting film 5.6 made of 2 etc. is formed. Also,
Caps 7 and 8 are fixed to both ends of the outer tube 4.
なお、第２図中、９はゲッタを示す。In addition, in FIG. 2, 9 indicates a getter.
かかるランプを点灯して試験したところ、下表に示すと
おりの結果か得られた。なお、同表には、本発明ランプ
と同等の管壁負荷の発光管および同一の封入物を用い、
かつ第３図（Ａ）、（Ｂ）に示す電極構造を採用した従
来の両口金形メタルハライドランプの諸特性も併せて示
す。When such a lamp was lit and tested, the results shown in the table below were obtained. In addition, the same table shows cases where an arc tube with the same tube wall load and the same enclosure as the lamp of the present invention is used.
Also shown are various characteristics of a conventional double-ended metal halide lamp employing the electrode structure shown in FIGS. 3(A) and 3(B).
（以 下 余 白〉
上表から明らかなように、本発明ランプは従来ランプに
比して、色温度が低く、演色性にもすぐれていることが
わかる。また、定格寿命６０００時間点灯経過後の光束
維持率も、本発明ランプの方が従来ランプよりすぐれて
いることがわかる。(Left below) As is clear from the table above, the lamp of the present invention has a lower color temperature and better color rendering than conventional lamps. It can be seen that the luminous flux maintenance factor of the lamp of the present invention is also superior to that of the conventional lamp.
なお、上記試験ランプの本数は各３本であるが、従来ラ
ンプでは定格寿命中に３本すべて発光管上部に著しい膨
張現象が見られ、それらのうち１本は７０００時間を経
過した時点で点灯中に発光管の破損が生じた。一方、本
発明ランプは、定格寿命中を通して発光管の膨張現象が
見られなかった。The number of test lamps above was three each, but in all three conventional lamps, a significant expansion phenomenon was observed in the upper part of the arc tube during the rated life, and one of them failed to turn on after 7000 hours. During the accident, the arc tube was damaged. On the other hand, in the lamp of the present invention, no expansion phenomenon of the arc tube was observed throughout the rated life.
発明の詳細
な説明したように、本発明は螺旋状部分とこの螺旋状部
分の後端に連なりその中心軸上から中心軸が外れた位置
にある直線部分とからなる一対の電極を用い、その直線
部分を発光管の中心軸上の封着部に封着しているので、
従来の電極封着方法を何ら変更するこ七なく製作できる
とともに、従来に比して演色性にすぐれ、動程特性の安
定したメタルハライドランプを提供することができるも
のである。As described in detail, the present invention uses a pair of electrodes consisting of a spiral portion and a straight portion that is connected to the rear end of the spiral portion and whose central axis is offset from the central axis of the spiral portion. Since the straight part is sealed to the sealing part on the central axis of the arc tube,
It is possible to provide a metal halide lamp that can be manufactured without any modification to the conventional electrode sealing method, has superior color rendering properties, and has stable movement characteristics compared to the conventional method.
第１図（Ａ）、（Ｂ）は本発明のメタルハライドランプ
に用いられる電極の一例を示す拡大正面図および拡大側
面図、第２図は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、第３図（Ａ）、（Ｂ）は従来
の両口金形メタルハライドランプに用いられる電極の正
面図および側面図である。
１・・・・・・電極、１ａ・・・・・・電極の螺旋状部
分、■ｂ・・・・・・電極の直線部分、２・・・・・・
電極、３・・・・・・発光管。
代理人の氏名 弁理士 粟野重孝 ほか１名：’（ｊ
Ｉ Ｌｇｊ
第 ３ 図
１ 電極
ｒａ 螺旋状部ガ
１ｂ １線邪カ
（Ａ）
＋Ｂ）
７・ ＼FIGS. 1(A) and (B) are an enlarged front view and an enlarged side view showing an example of an electrode used in a metal halide lamp of the present invention, and FIG. 2 is a partially cutaway view of a metal halide lamp that is an embodiment of the present invention. The front view and FIGS. 3A and 3B are a front view and a side view of an electrode used in a conventional double-ended metal halide lamp. 1... Electrode, 1a... Spiral part of the electrode, ■b... Straight part of the electrode, 2...
Electrode, 3... Arc tube. Name of agent: Patent attorney Shigetaka Awano and one other person: '(j
I Lgj 3rd Figure 1 Electrode ra Spiral part 1b 1st wire (A) +B) 7・ ＼
Claims (1)
部分とからなる一対の電極を有し内部に金属ハロゲン化
物が封入された発光管を備え、前記電極の直線部分は、
中心軸が前記電極の螺旋状部分の中心軸上から外れた位
置にあって、前記発光管の中心軸上の封着部に封着され
ていることを特徴とするメタルハライドランプ。A light emitting tube is provided with a pair of electrodes having a spiral portion at both ends and a straight portion connected to the rear end of the spiral portion, and a metal halide is sealed inside, and the straight portion of the electrode is
A metal halide lamp, wherein the central axis is located off the central axis of the spiral portion of the electrode and is sealed to a sealing portion on the central axis of the arc tube.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10724890A JP2858666B2 (en) | 1990-04-23 | 1990-04-23 | Metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10724890A JP2858666B2 (en) | 1990-04-23 | 1990-04-23 | Metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH046742A true JPH046742A (en) | 1992-01-10 |
| JP2858666B2 JP2858666B2 (en) | 1999-02-17 |
Family
ID=14454238
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10724890A Expired - Lifetime JP2858666B2 (en) | 1990-04-23 | 1990-04-23 | Metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2858666B2 (en) |
-
1990
- 1990-04-23 JP JP10724890A patent/JP2858666B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JP2858666B2 (en) | 1999-02-17 |
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