JPH02244551A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPH02244551A JPH02244551A JP6541789A JP6541789A JPH02244551A JP H02244551 A JPH02244551 A JP H02244551A JP 6541789 A JP6541789 A JP 6541789A JP 6541789 A JP6541789 A JP 6541789A JP H02244551 A JPH02244551 A JP H02244551A
- Authority
- JP
- Japan
- Prior art keywords
- light
- metal halide
- lamp
- tube
- interfering film
- 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 abstract description 23
- 150000005309 metal halides Chemical class 0.000 title claims abstract description 23
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 7
- 238000009877 rendering Methods 0.000 abstract description 9
- 230000002452 interceptive effect Effects 0.000 abstract 6
- 230000011514 reflex Effects 0.000 abstract 1
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 239000011734 sodium Substances 0.000 description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 150000002739 metals Chemical class 0.000 description 3
- -1 tin halide Chemical class 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910052736 halogen Inorganic materials 0.000 description 2
- 150000002367 halogens Chemical class 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 description 1
- 229910052692 Dysprosium Inorganic materials 0.000 description 1
- 229910052689 Holmium Inorganic materials 0.000 description 1
- 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 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- XMBWDFGMSWQBCA-UHFFFAOYSA-N hydrogen iodide Chemical compound I XMBWDFGMSWQBCA-UHFFFAOYSA-N 0.000 description 1
- 230000014759 maintenance of location Effects 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
- 230000003287 optical effect Effects 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
Landscapes
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は低色温度のメタルハライドランプに関するもの
である。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a metal halide lamp with a low color temperature.
従来の技術
従来、電球色に近似した低い色温度の発光を有するメタ
ルハライドランプとしては、発光金属としてスズとナト
リウム等を用い、沃化物や臭化物の形で発光管内に封入
したものが知られている。Conventional technology Conventionally, metal halide lamps that emit light at a low color temperature similar to the color of a light bulb have been known, using tin, sodium, etc. as luminescent metals and sealing them in the form of iodide or bromide in the arc tube. .
発明が解決しようとする課題
しかし、このような発光金属の一つとしてスズを用いた
低い色温度のメタルハライドランプでは、電極構造体の
うち、発光管内に露出した部分の低温部分が、寿命中に
細くなり折れてしよ・う現象がある。実際にハロゲン化
スズを含みハロゲン化ナトリウムを組み合わせたメタル
ハライドランプを試作して寿命試験を行ったところ、電
極構造体のうち、発光管内に露出した部分の低温部が杓
子時間の点す］により約２５％細（なった。この現象は
寿命中を通して進行するために、数千時間の点灯で電極
構造体が侵食により折れてしまうランプも発生し、ラン
プ寿命のばらつきが大きくなっている。このように発光
金属の一つとしてハロゲン化スズを含むメタルハライド
ランプでは、電極構造体がハロゲンにより侵食される度
合いがスズを含まない場合と比べて大きいために、電極
構造体が折れるという問題点があった。Problems to be Solved by the Invention However, in metal halide lamps that use tin as one of the light-emitting metals and have a low color temperature, the low-temperature portion of the electrode structure exposed inside the arc tube loses heat during its life. There is a phenomenon where it becomes thinner and breaks. When we actually manufactured a prototype metal halide lamp that combined tin halide and sodium halide, and conducted a life test, we found that the low temperature part of the electrode structure exposed inside the arc tube was exposed to light during the ladle time. As this phenomenon progresses throughout the life of the lamp, some lamps have their electrode structures broken due to erosion after several thousand hours of operation, resulting in wide variations in lamp life. In metal halide lamps that contain tin halide as one of the light-emitting metals, the electrode structure is more corroded by the halogen than when it does not contain tin, so there is a problem that the electrode structure can break. .
また、この種の低い色温度のメタルハライドランプは、
平均演色評価数Ｒａが７４．特殊演色評価数Ｒ９が−８
０，ランプ効率が７５２ｒｒｘ／ｗで、演色性やランプ
効率も充分とはいえなかった。In addition, this kind of metal halide lamp with a low color temperature is
Average color rendering index Ra is 74. Special color rendering index R9 is -8
0. The lamp efficiency was 752rrx/w, and the color rendering properties and lamp efficiency were not sufficient.
一方、色温度の高いメタルハライドランプ（色温度４０
００Ｋを超えるもの）では、寿命特性の良好なものが種
々知られている。例えば、発光金属として希土類金属（
Ｄｙ、Ｈｏ、Ｔｒｎ）およびＴｇ、Ｎａを含んだメタル
ハライドランプなどが、これに含まれる。しかし、これ
らの寿命特性が良好で色温度の高いランプは、電球代替
には適さないという間圧点があった。On the other hand, metal halide lamps with high color temperature (color temperature 40
(exceeding 00K), various types with good life characteristics are known. For example, rare earth metals (
This includes metal halide lamps containing Dy, Ho, Trn), Tg, and Na. However, there was a point where these lamps with good life characteristics and high color temperature were not suitable as replacements for light bulbs.
本発明は、このような問題点を解決するためになされた
もので、良好な寿命特性を有し、かつ高い演色性および
ランプ効率を有する低色温度のメタルハライドランプを
提供するものである。The present invention was made to solve these problems, and provides a low color temperature metal halide lamp that has good life characteristics, high color rendering properties, and lamp efficiency.
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、色温度が２０００〜
４０００にであって、両端に電極を有し、かつ内部にス
ズを除く金属ハロゲン化物および緩衝ガスが封入された
発光管と、前記発光管を囲繞する透光性筒と、前記発光
管と前記透光性筒を内蔵した外管とを備え、前記透光性
筒の表面に可視領域光の一部を反射する多層干渉膜を形
成した構成を有している。Means for Solving the Problems The metal halide lamp of the present invention has a color temperature of 2000~2000.
4000, comprising: an arc tube having electrodes at both ends and in which a metal halide other than tin and a buffer gas are sealed; a transparent cylinder surrounding the arc tube; The device includes an outer tube containing a light-transmitting tube, and a multilayer interference film that reflects part of visible light is formed on the surface of the light-transmitting tube.
作用
この構成により、透光性部表面に形成された多層干渉膜
の特性に応じて各波長ごとに異なった量の可視光線が反
射され、ランプから放出される光の色温度が変化する。Effect: With this configuration, a different amount of visible light is reflected for each wavelength depending on the characteristics of the multilayer interference film formed on the surface of the light-transmitting part, and the color temperature of the light emitted from the lamp changes.
そして、多層干渉膜の各波長に対する反射特性を任意に
設計することにより、任意の色温度の光が得られること
になる。By arbitrarily designing the reflection characteristics of the multilayer interference film for each wavelength, light with an arbitrary color temperature can be obtained.
また、上記の多層干渉膜により反射された光のエネルギ
ーの一部は、多重反射のうちに発光管に吸収され、熱エ
ネルギーへと変換される。このために、ランプの効率は
多層干渉膜がない場合と比べて高くなる。Furthermore, part of the energy of the light reflected by the multilayer interference film is absorbed by the arc tube during multiple reflections and converted into thermal energy. This increases the efficiency of the lamp compared to the case without the multilayer interference film.
実施例
第１図は本発明の一実施例の７０ Ｗメタルハライドラ
ンプを示す。同図において、内径９Ｍの石英ガラス製の
発光管１は両端に電極（図示せず）を有し、その内部に
始動用ガスとして２００トールのアルゴンと１３ｍｇの
水銀のほかにＮａｌ。Embodiment FIG. 1 shows a 70 W metal halide lamp according to an embodiment of the present invention. In the figure, an arc tube 1 made of quartz glass with an inner diameter of 9M has electrodes (not shown) at both ends, and inside it contains 200 torr of argon, 13 mg of mercury, and Na as starting gases.
Ｔｉ！ Ｉ、Ｔｒｎ１３ 、Ｄｙ ｌｘ 、Ｈｏ ＋
３の金属ハロゲン化物が封入されている。石英ガラスか
らなる透光性筒２の外表面にはＴｉ０ｚ ５ｉ０２の
多層干渉膜３が形成されている。この透光性筒２は発光
管１を囲繞している。硬質ガラス製の外管４は発光管１
と透光性筒２を内蔵している。Ti! I, Trn13, Dy lx, Ho +
3 metal halides are enclosed. A multilayer interference film 3 of TiOz 5i02 is formed on the outer surface of a transparent cylinder 2 made of quartz glass. This light-transmitting tube 2 surrounds the arc tube 1. The outer tube 4 made of hard glass is the luminous tube 1
It has a built-in translucent tube 2.
なお、図中、５はゲッタ、６は口金をそれぞれ示す。In the figure, 5 indicates a getter and 6 indicates a cap.
第２図は上記多層干渉膜の反射率波長依存性を示す。FIG. 2 shows the wavelength dependence of the reflectance of the multilayer interference film.
このような反射率波長依存性をもつ多層干渉膜を用いた
本発明実施例のランプでは、発光金属としてスズを含む
従来のメタルハライドランプと同等の３２００にの色１
Ｂ度において、平均演色評価数Ｒａが７８（従来ランプ
は７４）、特殊演色評価数のひとつで赤の演色性の程度
を示ずＲ９が−４０（従来ランプは−８０）とすぐれた
演色性が得られた。また、ランプ効率についても、従来
の約１２０％である９１＆ｍ／ｗと高いランプ効率が得
られた。The lamp according to the embodiment of the present invention using a multilayer interference film having such reflectance wavelength dependence has a color 1 of 3200, which is equivalent to a conventional metal halide lamp containing tin as the luminescent metal.
At B degree, the average color rendering index Ra is 78 (74 for conventional lamps), and R9 is -40 (-80 for conventional lamps), which is one of the special color rendering indexes and shows excellent color rendering properties. was gotten. Furthermore, a high lamp efficiency of 91 m/w, which is about 120% of the conventional lamp efficiency, was obtained.
また、本発明の低い色温度のメタルハライドランプは電
極構造体の低温部分がハロゲンによる侵食をほとんど受
けず、６本につき６０００時間の寿命試験を行った結果
、６０００時間終了後に全数の８０％以上の光束推持率
であった。In addition, in the low color temperature metal halide lamp of the present invention, the low-temperature part of the electrode structure is hardly corroded by halogen, and as a result of a 6000-hour life test for 6 lamps, more than 80% of the total It was the luminous flux retention rate.
なお、ｌ記実施例では多層干渉膜を透光性筒の外面に形
成した例について説明したが、これに限らず、筒の内・
外面の両方でも、また内面のみに形成しても同様の結果
が得られる。In addition, in Example 1, an example was explained in which a multilayer interference film was formed on the outer surface of a light-transmitting tube, but the invention is not limited to this.
Similar results can be obtained by forming it on both outer surfaces or only on the inner surface.
また、多層干渉膜の特性は第２図に示したものに限ら４
″、干渉膜の光学膜厚や層数等のパラメータにより調整
が可能であり、これらを適切に設定することにより実施
例以外の色温度のランプを得ることができる。Furthermore, the characteristics of the multilayer interference film are limited to those shown in Figure 2.
This can be adjusted by parameters such as the optical thickness of the interference film and the number of layers, and by appropriately setting these, a lamp with a color temperature other than that of the example can be obtained.
さらに、多層干渉膜を形成する材料は５ｉ０２Ｔ ｉ
Ｏ２との組み合わせでな（でもよい。例えば、ＴｉＯ２
のかわりに、Ｔａ２０５ 、Ｚｒ０ｔ、Ｓ：ｓＮｔを用
いてもよく、またＴｉ０ｚ Ａｇ−ＴｉＯ２を用いて
もよい。Furthermore, the material forming the multilayer interference film is 5i02T i
In combination with O2 (may be used, for example, TiO2
Instead, Ta205, Zr0t, S:sNt, or TiOzAg-TiO2 may be used.
また、発光管内の封入物も上記実施例に限らず、例えば
、Ｎａｐ： Ｉｎｌ＋＋ ：Ｔｅ Ｉを用いてもよい
。また、本発明実施例では多層下・渉膜の形成法として
ゾル−ゲル法を用いたが、これに限らず一般に知られて
いる種々のＣＶＤ法や蒸着法を用いて多層干渉膜を形成
しても同様の結果が得られる。Further, the material to be filled in the arc tube is not limited to the above embodiment, and for example, Nap: Inl++ :Te I may be used. In addition, in the examples of the present invention, the sol-gel method was used as the method for forming the multilayer interference film, but the multilayer interference film can be formed using various commonly known CVD methods and vapor deposition methods. Similar results can be obtained.
発明の詳細
な説明したように、本発明は色温度が２０００〜４００
０にであって、両端に電極を有し１．かつ内部にスズを
除く金属ハロゲン化物および緩衝ガスが封入された発光
管と、前記発光管を囲繞した透光性筒と、前記発光管と
透光性筒とを内蔵した外管とを備え、前記透光性筒の表
面に可視領域光の一部を反射する多層干渉膜を形成して
、可視光の一部を透過させないようにして、前記発光管
内で発生する光より任意の値だけ色温度を変化させるこ
とにより、低色温度で、しかも演色性にすぐれ、かつ寿
命特性も良好であり、電球代替に適するメタルハライド
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 has a color temperature of 2000 to 400.
0, having electrodes at both ends; 1. and includes an arc tube in which a metal halide other than tin and a buffer gas are sealed, a transparent tube surrounding the arc tube, and an outer tube containing the arc tube and the transparent tube, A multilayer interference film that reflects part of the visible light is formed on the surface of the light-transmitting tube to prevent part of the visible light from passing through, so that the light generated within the arc tube is colored by an arbitrary value. By changing the temperature, it is possible to provide a metal halide lamp that has a low color temperature, excellent color rendering properties, and good life characteristics, and is suitable as a replacement for light bulbs.
第１図は本発明の一実施例であるメタルハライドランプ
の正面図、第２図は多層干渉膜付き透光性筒の透過率波
長依存性を示す図である。
１・・・・・・発光管、２・・・・・・透光性筒、３・
・・・・・多層干渉膜、４・・・・・・外管、５・・・
・・・ゲッタ、６・・・・・・口金。
代理人の氏名 弁理士 粟野重孝 ほか１名＋ ａ＋Ｊ
ｈ ← ｈ （
味
＠ 冑 ・即 夕FIG. 1 is a front view of a metal halide lamp according to an embodiment of the present invention, and FIG. 2 is a diagram showing the wavelength dependence of the transmittance of a light-transmitting tube with a multilayer interference film. 1... Arc tube, 2... Translucent tube, 3.
...Multilayer interference film, 4...Outer tube, 5...
... Getta, 6... Base. Name of agent: Patent attorney Shigetaka Awano and 1 other person + a+J
h ← h ( taste @ 冑 ・Same evening
Claims (2)
電極を有し、かつ内部にスズを除く金属ハロゲン化物お
よび緩衝ガスが封入された発光管と、前記発光管を囲繞
した透光性筒と、前記発光管と前記透光性筒とを内蔵し
た外管とを備え、前記透光性筒の表面に可視領域光の一
部を反射する多層干渉膜を形成したことを特徴とするメ
タルハライドランプ。(1) An arc tube with a color temperature of 2000 to 4000 K, having electrodes at both ends and filled with a metal halide other than tin and a buffer gas, and a transparent tube surrounding the arc tube. and an outer tube containing the light emitting tube and the light-transmitting tube, and a multilayer interference film that reflects a part of light in the visible region is formed on the surface of the light-transmitting tube. lamp.
２−Ｔａ＿２Ｏ＿５、ＳｉＯ＿２、Ｓｉ＿３Ｎ＿２−Ｓ
ｉＯ＿２−ＺｒＯ＿２またはＴｉＯ＿２−Ａｇ−ＴｉＯ
＿２からなることを特徴とする請求項１記載のメタルハ
ライドランプ。(2) The multilayer interference film is SiO_2-TiO_2, SiO_
2-Ta_2O_5, SiO_2, Si_3N_2-S
iO_2-ZrO_2 or TiO_2-Ag-TiO
The metal halide lamp according to claim 1, characterized in that it consists of _2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1065417A JP2928262B2 (en) | 1989-03-16 | 1989-03-16 | Metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1065417A JP2928262B2 (en) | 1989-03-16 | 1989-03-16 | Metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02244551A true JPH02244551A (en) | 1990-09-28 |
| JP2928262B2 JP2928262B2 (en) | 1999-08-03 |
Family
ID=13286453
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1065417A Expired - Fee Related JP2928262B2 (en) | 1989-03-16 | 1989-03-16 | Metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2928262B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203356A (en) * | 2003-12-10 | 2005-07-28 | General Electric Co <Ge> | Ultraviolet rays reflective multilayer coating optimized for lamp with excellent energy efficiency |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS495423A (en) * | 1972-05-06 | 1974-01-18 | ||
| JPS5136788A (en) * | 1974-09-24 | 1976-03-27 | Hitachi Ltd | KINZOKUJOKIHODENTO |
| JPS58158854A (en) * | 1982-03-01 | 1983-09-21 | ジ−・テイ−・イ−・プロダクツ・コ−ポレイシヨン | Metal halide arc discharge lamp of long life and warm color |
| JPS61250958A (en) * | 1985-04-30 | 1986-11-08 | Iwasaki Electric Co Ltd | metal halide lamp |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2519377A1 (en) | 1975-04-30 | 1976-11-11 | Patra Patent Treuhand | MERCURY VAPOR HIGH PRESSURE DISCHARGE LAMP |
-
1989
- 1989-03-16 JP JP1065417A patent/JP2928262B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS495423A (en) * | 1972-05-06 | 1974-01-18 | ||
| JPS5136788A (en) * | 1974-09-24 | 1976-03-27 | Hitachi Ltd | KINZOKUJOKIHODENTO |
| JPS58158854A (en) * | 1982-03-01 | 1983-09-21 | ジ−・テイ−・イ−・プロダクツ・コ−ポレイシヨン | Metal halide arc discharge lamp of long life and warm color |
| JPS61250958A (en) * | 1985-04-30 | 1986-11-08 | Iwasaki Electric Co Ltd | metal halide lamp |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005203356A (en) * | 2003-12-10 | 2005-07-28 | General Electric Co <Ge> | Ultraviolet rays reflective multilayer coating optimized for lamp with excellent energy efficiency |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2928262B2 (en) | 1999-08-03 |
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| LAPS | Cancellation because of no payment of annual fees |