JPH0582098A - Metal halide lamp - Google Patents
Metal halide lampInfo
- Publication number
- JPH0582098A JPH0582098A JP3241303A JP24130391A JPH0582098A JP H0582098 A JPH0582098 A JP H0582098A JP 3241303 A JP3241303 A JP 3241303A JP 24130391 A JP24130391 A JP 24130391A JP H0582098 A JPH0582098 A JP H0582098A
- Authority
- JP
- Japan
- Prior art keywords
- metal halide
- arc tube
- enclosed
- tube body
- 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.)
- Pending
Links
- 229910001507 metal halide Inorganic materials 0.000 title claims abstract description 47
- 150000005309 metal halides Chemical class 0.000 title claims abstract description 44
- 238000007789 sealing Methods 0.000 claims abstract description 16
- 239000010453 quartz Substances 0.000 claims abstract description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000009877 rendering Methods 0.000 abstract description 13
- -1 rare earth halide Chemical class 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 150000004820 halides Chemical class 0.000 description 3
- 229910052761 rare earth metal Inorganic materials 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005538 encapsulation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- ZZUFCTLCJUWOSV-UHFFFAOYSA-N furosemide Chemical compound C1=C(Cl)C(S(=O)(=O)N)=CC(C(O)=O)=C1NCC1=CC=CO1 ZZUFCTLCJUWOSV-UHFFFAOYSA-N 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
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Landscapes
- Discharge Lamp (AREA)
Abstract
(57)【要約】
【目的】 常に所要の発光効率および演色性を呈するメ
タルハライドランプの提供を目的とする。
【構成】 石英製発光管本体と、前記発光管本体内に封
入されたメタルハライドと、前記発光管本体内に対向し
て封入された電極コイルを有する一対の放電電極と、前
記放電電極に一端が接続し発光管本体壁を封止導出され
た一対のリード端子とを具備したメタルハライドランプ
において、前記各放電電極の発光管本体封止部側電極コ
イル部端面に沿う仮想平面と発光管本体封止部側内壁面
とが成す空間容積の和V(mm3 )とし、前記封入される
メタルハライド(金属ハライド化物)量m(mg)とした
とき、0.68<m/V<3.4 に設定することを特徴とす
る。(57) [Summary] [Purpose] The objective is to provide a metal halide lamp that always exhibits the required luminous efficiency and color rendering properties. A quartz arc tube body, a metal halide enclosed in the arc tube body, a pair of discharge electrodes having an electrode coil enclosed opposite to the arc tube body, and one end of the discharge electrode. A metal halide lamp having a pair of lead terminals connected to each other and sealing a wall of an arc tube main body, wherein a virtual plane along the end surface of the electrode coil portion of the discharge tube main body sealing portion of the discharge electrode and the arc tube main body sealing When the sum of the space volume formed by the inner wall surface of the part is V (mm 3 ) and the amount of the enclosed metal halide (metal halide) is m (mg), 0.68 <m / V <3.4 is set. And
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
係り、特に効率や演色性などを改良したメタルハライド
ランプに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal halide lamp, and more particularly to a metal halide lamp having improved efficiency and color rendering properties.
【0002】[0002]
【従来の技術】石英製発光管本体内に、水銀および希土
類系のハロゲン化物(メタルハライド)と、一対の放電
電極を封入して成るメタルハライドランプは、演色性に
すぐれ高効率の光源として注目されている。特に放電電
極間距離の短いショートアークメタルハライドランプ
は、点光源に近く光学的に有利であるため、投光機のコ
ンパクト化や用途の多様化などを図り得ることから、多
くの関心が寄せられている。2. Description of the Related Art A metal halide lamp in which a mercury and rare earth halide (metal halide) and a pair of discharge electrodes are enclosed in a quartz arc tube body has been attracting attention as a highly efficient light source with excellent color rendering properties. There is. In particular, a short arc metal halide lamp with a short distance between discharge electrodes is close to a point light source and is optically advantageous, so that it is possible to make the floodlight compact and diversify its applications. There is.
【0003】[0003]
【発明が解決しようとする課題】しかし、上記メタルハ
ライドランプには実用上、次のような不都合な問題があ
る。すなわち、この種のメタルハライドランプにおいて
は、前記希土類系の金属ハロゲン化物(メタルハライ
ド)の蒸気圧に起因して、最冷部温度の変化が発光効率
に大きく影響する。一般に十分な金属発光を得るため
に、前記金属ハロゲン化物を過剰に封入しているが、こ
の封入量が多過ぎると発光管内壁面に付着して遮光する
ので効率の低下を招くことになる。しかも、発光管内壁
面へ付着した金属ハロゲン化物が、透過する光にも影響
してランプに色ムラを生じるという問題がある。However, the above-mentioned metal halide lamp has the following inconvenient problems in practical use. That is, in this type of metal halide lamp, the change in the temperature of the coldest part greatly affects the luminous efficiency due to the vapor pressure of the rare earth metal halide (metal halide). Generally, in order to obtain sufficient metal light emission, the above metal halide is excessively encapsulated. However, if the encapsulation amount is too large, it adheres to the inner wall surface of the arc tube and shields light, resulting in a decrease in efficiency. In addition, there is a problem that the metal halide attached to the inner wall surface of the arc tube also affects the transmitted light and causes color unevenness in the lamp.
【0004】こうした問題の解消ないし改善の策とし
て、過剰に封入した金属ハロゲン化物を、光遮断を生じ
ない領域に選択的に付着させることも知られているが、
この領域が大きくなると最冷部温度が下がり過ぎ、十分
な金属発光が得られない。つまり、発光効率の低下や演
色性の低下を招来して、メタルハライドランプとして本
来期待されている機能を十分に呈さないという問題があ
る。As a measure for solving or improving such a problem, it is known that an excessively encapsulated metal halide is selectively adhered to a region which does not cause light blocking.
If this region becomes large, the temperature of the coldest part will drop too much, and sufficient metal emission cannot be obtained. That is, there is a problem in that the luminous efficiency is lowered and the color rendering is lowered, and the function originally expected as the metal halide lamp is not sufficiently exhibited.
【0005】本発明は上記事情に対処してなされたもの
で、常に所要の発光効率および演色性を呈するメタルハ
ライドランプの提供を目的とする。The present invention has been made in view of the above circumstances, and an object thereof is to provide a metal halide lamp which always exhibits the required luminous efficiency and color rendering properties.
【0006】[0006]
【課題を解決するための手段】本発明に係るメタルハラ
イドランプは、石英製発光管本体と、前記発光管本体内
に封入されたメタルハライドと、前記発光管本体内に対
向して封入された電極コイルを有する一対の放電電極
と、前記放電電極に一端が接続し発光管本体壁を封止導
出された一対のリード端子とを具備したメタルハライド
ランプにおいて、前記各放電電極の発光管本体封止部側
電極コイル部端面に沿う仮想平面と発光管本体封止部側
内壁面とが成す空間容積の和V(mm3 )とし、前記封入
されるメタルハライド(金属ハライド化物)量m(mg)
としたとき、0.68<m/V<3.4に設定することを特徴
とする。MEANS FOR SOLVING THE PROBLEMS A metal halide lamp according to the present invention comprises a quartz arc tube body, a metal halide enclosed in the arc tube body, and an electrode coil enclosed oppositely in the arc tube body. In a metal halide lamp having a pair of discharge electrodes, and a pair of lead terminals, one end of which is connected to the discharge electrodes and which is led out by sealing the arc tube body wall, the discharge electrode main body sealing portion side of each discharge electrode. A sum V (mm 3 ) of the space volume formed by a virtual plane along the end surface of the electrode coil portion and the inner wall surface of the arc tube main body sealing portion side, and the amount of the metal halide (metal halide compound) enclosed m (mg)
Then, 0.68 <m / V <3.4 is set.
【0007】上記本発明は、この種のメタルハライドラ
ンプにおいて、各放電電極の発光管本体封止部側電極コ
イル部端面に沿う仮想平面と発光管本体封止部側内壁面
とが成す空間容積の和V(mm3 )とし、前記封入される
メタルハライド量m(mg)としたとき、0.68<m/V<
3.4 に設定した場合、発光管内壁面へのメタルハライド
の付着による遮光などが効果的に防止ないし抑制され、
常に効率が高くて良好演色性を呈するという知見に基づ
くものである。According to the present invention, in this type of metal halide lamp, the space volume formed by the virtual plane along the end face of the electrode coil portion of the discharge tube main body sealing portion of each discharge electrode and the inner wall surface of the discharge tube main body sealing portion side. Assuming that the sum is V (mm 3 ) and the amount of the enclosed metal halide is m (mg), 0.68 <m / V <
When set to 3.4, light shielding etc. due to adhesion of metal halide on the inner wall surface of the arc tube is effectively prevented or suppressed,
It is based on the finding that efficiency is always high and good color rendering is exhibited.
【0008】[0008]
【作用】本発明に係るメタルハライドランプは、前記し
たように放電電極の発光管本体封止部側電極コイル部端
面に沿う仮想平面と発光管本体封止部側内壁面とが成す
空間容積の和V(cm3 )とし、前記封入されるメタルハ
ライド量m(mg)としたとき、0.68 <m/V<3.4 に
設定したことにより、封入されたメタルハライド(金属
ハライド化物)の過剰分は、発光した光の透過に実質的
にほとんど関与しない領域、換言すると発光管本体封止
部側内壁面に付着する。したがって、ランプに色ムラを
生じるという問題も解消され、所要の発光効率および演
色性を呈するメタルハライドランプとして機能する。In the metal halide lamp according to the present invention, as described above, the sum of the space volume formed by the virtual plane along the end face of the electrode coil portion of the discharge tube body sealing portion and the inner wall surface of the discharge tube body sealing portion side. When V (cm 3 ) and the amount of the enclosed metal halide m (mg) are set, 0.68 <m / V <3.4 is set, and the excess amount of the enclosed metal halide (metal halide compound) emits light. It adheres to a region that is substantially not involved in the transmission of light, in other words, to the inner wall surface of the arc tube body sealing portion side. Therefore, the problem of causing color unevenness in the lamp is solved, and the lamp functions as a metal halide lamp exhibiting the required luminous efficiency and color rendering properties.
【0009】[0009]
【実施例】以下添付図を参照して本発明の実施例を説明
する。Embodiments of the present invention will be described below with reference to the accompanying drawings.
【0010】図1は本発明に係る入力 2KW型のショー
トアクメタルハライドランプの構成例を断面的に示した
もので、1は、たとえば最大内径30mmの石英製発光管本
体である。そして、この発光管本体1内には金属(メタ
ル)ハライド化物として、Dy2 Br3 −HoBr3 −
TmBr3 −CsI−HgI2 −HgBr2 が34mg
(m)封入され、さらに発光管本体1内に対向して一端
部にそれぞれ電極コイル2a,3a を巻装して成る一対の放
電電極2,3が封入されている。なお、前記放電電極
2,3の他端部は、リード端子2b,3bに電気的に接続し
て発光管本体1壁を封止導出されている。FIG. 1 is a sectional view showing an example of the construction of an input 2KW type short acmetal halide lamp according to the present invention. Reference numeral 1 denotes a quartz arc tube body having a maximum inner diameter of 30 mm, for example. Then, as in the light emitting tube body 1 metal (metal) halide compound, Dy 2 Br 3 -HoBr 3 -
TmBr 3 -CsI-HgI 2 -HgBr 2 is 34mg
(M) Enclosed, and further, a pair of discharge electrodes 2 and 3 formed by winding electrode coils 2a and 3a at one ends facing the inside of the arc tube body 1 are encapsulated. The other ends of the discharge electrodes 2 and 3 are electrically connected to the lead terminals 2b and 3b to lead out the wall of the arc tube body 1 in a sealed manner.
【0011】上記構成の入力 2KW型のショートアクメ
タルハライドランプにおいては、図2に要部を拡大して
示すように、前記各放電電極2,3の発光管本体封止部
側電極コイル2a,3a 端面に沿う仮想平面(A)と発光管
本体封止部側内壁面とが成す空間容積Va,Vb の和V(mm
3 )を60mm3 以下の範囲内で変化させた場合について、
効率(lm/W)および演色性(Ra)をそれぞれ測定・評価
したところ、図3に示すような結果が得られた。なお、
図3において曲線aは効率(lm/W)を、曲線bは演色性
(Ra)をそれぞれ示す。In the input 2KW type short acmetal halide lamp having the above-mentioned structure, as shown in an enlarged view of the essential part of FIG. Sum of space volumes Va and Vb formed by the virtual plane (A) along the end face and the inner wall surface of the arc tube main body sealing part V (mm
When changing 3 ) within the range of 60 mm 3 or less,
When the efficiency (lm / W) and the color rendering (Ra) were measured and evaluated, the results shown in FIG. 3 were obtained. In addition,
In FIG. 3, a curve a shows efficiency (lm / W), and a curve b shows color rendering (Ra).
【0012】図3から分かるように、この例におけるシ
ョートアクメタルハライドランプにおいては、各放電電
極2,3の発光管本体封止部側電極コイル2a,3a 端面に
沿う仮想平面(A)と、発光管本体封止部側内壁面とが
成す空間容積(電極棒の体積分は除く)Va,Vb の和V
(mm3 )が10〜50mm3 のとき、換言すると前記空間容積
Va,Vb の和V(mm3 )10〜50mm3 と、前記封入されるメ
タルハライド量m(34mg)との比m/Vが0.68を超え、
また3.4 未満の範囲では、効率(lm/W)および演色性
(Ra)ともに良好な値が得られた。なお、ここでm/V
が3.4 を超えるとメタルハライドの付着による遮光の問
題が認められ、また0.68未満では最冷部温度が低下し過
ぎ効率(lm/W)および演色性(Ra)の低下が認められ
た。As can be seen from FIG. 3, in the short acmetal halide lamp in this example, a virtual plane (A) along the end faces of the discharge tube main body sealing portion side electrode coils 2a and 3a of the discharge electrodes 2 and 3, and the light emission. Space volume formed by the inner wall surface of the tube main body side (excluding the volume of the electrode rod) Sum of Va and Vb V
(Mm 3) when is 10 to 50 mm 3, it said in other words to space volume
Va, the sum V (mm 3) 10~50mm 3 of Vb, the ratio m / V of the metal halide amount m (34 mg) is 0.68, which is the enclosed exceeded,
Within the range of less than 3.4, good values were obtained for both efficiency (lm / W) and color rendering (Ra). In addition, here m / V
When the value exceeds 3.4, the problem of light shielding due to the adhesion of metal halide was observed, and when the value was less than 0.68, the coldest part temperature was too low and the efficiency (lm / W) and color rendering (Ra) were decreased.
【0013】上記ではメタルハライドランプとして、シ
ョートアクメタルハライドランプの場合を例示したが、
本発明はこれに限定されるものでなく、他のメタルハラ
イドランプの場合においても、同様の作用・効果がえら
れる。In the above, as the metal halide lamp, the case of a short ac metal halide lamp has been exemplified.
The present invention is not limited to this, and similar effects can be obtained in the case of other metal halide lamps.
【0014】[0014]
【発明の効果】以上詳述したように、本発明に係るメタ
ルハライドランプは、過剰に封入される金属ハライド化
物に対する最冷部温度が、常に適正に保持されるため、
良好な効率および演色性を呈する信頼性の高い光源とし
て機能する。As described in detail above, in the metal halide lamp according to the present invention, since the coldest temperature of the metal halide compound that is excessively enclosed is always properly maintained,
It acts as a reliable light source with good efficiency and color rendering.
【図1】本発明に係るショートアークメタルハライドラ
ンプの構成例を示す断面図。FIG. 1 is a sectional view showing a configuration example of a short arc metal halide lamp according to the present invention.
【図2】本発明に係るショートアークメタルハライドラ
ンプの要部構成を示す断面図。FIG. 2 is a cross-sectional view showing a configuration of a main part of a short arc metal halide lamp according to the present invention.
【図3】本発明に係るショートアークメタルハライドラ
ンプの発光管本体封止部側内壁面とが成す空間容積の和
Vと封入されるメタルハライド量mとの比にたいする効
率および演色性の関係例を示す曲線図。FIG. 3 shows an example of the relationship between efficiency and color rendering property with respect to the ratio of the sum V of the space volume formed by the inner wall surface of the arc tube body sealing portion side of the short arc metal halide lamp according to the present invention and the enclosed metal halide amount m. Curve diagram.
1…発光管本体 2,3…放電電極 2a,3a …電極
コイル 2b,3b …リード端子1 ... Arc tube main body 2, 3 ... Discharge electrode 2a, 3a ... Electrode coil 2b, 3b ... Lead terminal
フロントページの続き (72)発明者 蛭田 寿男 東京都港区三田1丁目4番28号 東芝ライ テツク 株式会社内Front page continuation (72) Inventor Toshio Hikita 1-4-2-4, Mita, Minato-ku, Tokyo Toshiba Lighting & Technology Corporation
Claims (1)
に封入されたメタルハライドと、前記発光管本体内に対
向して封入された電極コイルを有する一対の放電電極
と、前記放電電極に一端が接続し発光管本体壁を封止導
出された一対のリード端子とを具備したメタルハライド
ランプにおいて、 前記各放電電極の発光管本体封止部側電極コイル部端面
に沿う仮想平面と発光管本体封止部側内壁面とが成す空
間容積の和V(mm3 )とし、前記封入されるメタルハラ
イド量m(mg)としたとき、0.68 <m/V<3.4 に設
定することを特徴とするメタルハライドランプ。1. A quartz arc tube body, a metal halide enclosed in the arc tube body, a pair of discharge electrodes having an electrode coil enclosed in the arc tube body so as to face each other, and A metal halide lamp comprising a pair of lead terminals, one end of which is connected and the wall of the arc tube body is sealed and led out, wherein a virtual plane along the arc coil body sealing portion side electrode coil end surface of each discharge electrode and the arc tube body The metal halide is characterized in that 0.68 <m / V <3.4 is set, where V (mm 3 ) is the sum of the volume of space formed by the inner wall surface of the sealing part and m (mg) is the enclosed metal halide amount. lamp.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3241303A JPH0582098A (en) | 1991-09-20 | 1991-09-20 | Metal halide lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP3241303A JPH0582098A (en) | 1991-09-20 | 1991-09-20 | Metal halide lamp |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH0582098A true JPH0582098A (en) | 1993-04-02 |
Family
ID=17072279
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP3241303A Pending JPH0582098A (en) | 1991-09-20 | 1991-09-20 | Metal halide lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0582098A (en) |
-
1991
- 1991-09-20 JP JP3241303A patent/JPH0582098A/en active Pending
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