JPH0444386B2 - - Google Patents
Info
- Publication number
- JPH0444386B2 JPH0444386B2 JP58202535A JP20253583A JPH0444386B2 JP H0444386 B2 JPH0444386 B2 JP H0444386B2 JP 58202535 A JP58202535 A JP 58202535A JP 20253583 A JP20253583 A JP 20253583A JP H0444386 B2 JPH0444386 B2 JP H0444386B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- outer sphere
- lamp
- reflective
- reflective outer
- 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
- 229910001507 metal halide Inorganic materials 0.000 claims description 14
- 150000005309 metal halides Chemical class 0.000 claims description 14
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 5
- 229910052753 mercury Inorganic materials 0.000 claims description 5
- 239000010453 quartz Substances 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 238000009877 rendering Methods 0.000 description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 238000009413 insulation Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- FVAUCKIRQBBSSJ-UHFFFAOYSA-M sodium iodide Chemical compound [Na+].[I-] FVAUCKIRQBBSSJ-UHFFFAOYSA-M 0.000 description 3
- GQKYKPLGNBXERW-UHFFFAOYSA-N 6-fluoro-1h-indazol-5-amine Chemical compound C1=C(F)C(N)=CC2=C1NN=C2 GQKYKPLGNBXERW-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- CMJCEVKJYRZMIA-UHFFFAOYSA-M thallium(i) iodide Chemical compound [Tl]I CMJCEVKJYRZMIA-UHFFFAOYSA-M 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- XQPRBTXUXXVTKB-UHFFFAOYSA-M caesium iodide Chemical compound [I-].[Cs+] XQPRBTXUXXVTKB-UHFFFAOYSA-M 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- HUIHCQPFSRNMNM-UHFFFAOYSA-K scandium(3+);triiodide Chemical compound [Sc+3].[I-].[I-].[I-] HUIHCQPFSRNMNM-UHFFFAOYSA-K 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 235000009518 sodium iodide Nutrition 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/30—Vessels; Containers
- H01J61/34—Double-wall vessels or containers
Description
【発明の詳細な説明】
本発明は、ビデオ撮影用の光源等に適した反射
型の小形メタルハライドランプに関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a small reflective metal halide lamp suitable as a light source for video photography.
ビデオ撮影等に用いられる光源は一般に次のよ
うな諸条件を満足するものが望ましい。 Generally, it is desirable that the light source used for video shooting etc. satisfy the following conditions.
小形・軽量で運搬に適していること
発光効率が高いこと
所望の色温度（約4000〓）が得られること
瞬時点滅ができること
振動等の機械的衝撃に強いこと
ところで、従来、ビデオ撮影用の光源として
は、一般にハロゲン電球のような小形・高輝度の
白熱電球が使用されてきた。 Small and lightweight, suitable for transportation High luminous efficiency Ability to obtain the desired color temperature (approximately 4000〓) Capable of instantaneous flashing Resistant to mechanical shocks such as vibrations By the way, conventional light sources for video shooting Generally, small, high-brightness incandescent light bulbs such as halogen light bulbs have been used.
かかる白熱電球は比較的小形・軽量で瞬時点滅
は可能であるが、放電灯に比べて発光効率が低く
（約30lｍ／Ｗ）、所望の色温度を得ることが難し
く（約3300〓）、振動にも弱いという欠点がある。 Although such incandescent light bulbs are relatively small and lightweight and can flash instantaneously, they have lower luminous efficiency than discharge lamps (approximately 30 lm/W), are difficult to obtain the desired color temperature (approximately 3300 lm/W), and are susceptible to vibration. It also has the disadvantage of being weak.
一方、最近、前記のような白熱電球に代る光源
として小形のメタルハライドランプが注目されて
いる。メタルハライドランプは高圧金属蒸気放電
灯の一種で、両端に電極を有する石英製発光管の
内部に水銀及び希ガスと共に各種の金属ハロゲン
化物を封入したものである。 On the other hand, recently, small metal halide lamps have been attracting attention as a light source in place of the above-mentioned incandescent lamps. A metal halide lamp is a type of high-pressure metal vapor discharge lamp, in which various metal halides are sealed together with mercury and a rare gas inside a quartz arc tube that has electrodes at both ends.
このメタルハライドランプは、白熱電球に比べ
て発光効率が格段に高く、所望の色温度を得るこ
とができ、振動にも強いという長所を有するが、
反面、次のような弱点がある。 Metal halide lamps have the advantage of having much higher luminous efficiency than incandescent bulbs, being able to obtain the desired color temperature, and being resistant to vibrations.
On the other hand, it has the following weaknesses.
発光管を外管内に収納した二重管構造である
ため、小形のランプであつても白熱電球に比べ
ると大形とならざるをえない。 Because it has a double-tube structure in which the luminous tube is housed within the outer bulb, even if it is a small lamp, it must be larger than an incandescent light bulb.
したがつて、かかるランプを反射鏡を有する
灯具に収納すると全体的には更に大形となる。 Therefore, if such a lamp is housed in a lighting device having a reflecting mirror, the overall size of the lamp will be even larger.
ランプを瞬時に点滅させるためには、例えば
発光管の電極間に数KV〜数十KVの高電圧を
印加しなければならない。 In order to flash a lamp instantaneously, a high voltage of, for example, several kilovolts to several tens of kilovolts must be applied between the electrodes of the arc tube.
したがつて、リード線の間隔を大きくしたり口
金部分の絶縁耐性を大きくする必要があるため、
ランプ全体がいつそう大形となる。 Therefore, it is necessary to increase the distance between the lead wires and increase the insulation resistance of the base.
The entire lamp becomes very large.
本発明は以上の点に鑑みてなされたもので、前
記のようなメタルハライドランプの弱点を克服し
て、ビデオ撮影等の光源としての各条件を総合的
に満足することができる反射型の小形メタルハラ
イドランプを提供せんとするものである。 The present invention has been made in view of the above points, and provides a small reflective metal halide lamp that can overcome the weaknesses of metal halide lamps as described above and comprehensively satisfy various conditions as a light source for video shooting, etc. The aim is to provide lamps.
第１図ａ及びｂは本発明に係る反射型小形メタ
ルハライドランプの一部を切り欠いて示した平面
図及び側面図を示す。図中、１は両端に電極を有
する内容積１cm3以下の石英管球の内部に適量の水
銀及び希ガスと共に沃化ジスプロシウムや沃化タ
リウムのような金属ハロゲン化物を封入してなる
定格入力100W以下の発光管である。 FIGS. 1a and 1b show a partially cutaway plan view and side view of a small reflective metal halide lamp according to the present invention. In the figure, 1 is a quartz tube with an internal volume of 1 cm 3 or less that has electrodes at both ends and is filled with a metal halide such as dysprosium iodide or thallium iodide along with an appropriate amount of mercury and rare gas.The rated input is 100 W. The following is the arc tube.
この発光管の定格入力が100Wを超えると、ラ
ンプ電流の増大に伴う熱負荷の増加に耐えうるよ
うに、発光管の内容積や電極その他の構成材料の
寸法を大きくしなければならないので、ランプ全
体の寸法が急激に大きくなり可搬用には適さなく
なる。また、第１図において、２は前面透光部３
と光線反射部４とからなる反射型外球である。こ
の反射型外球２は前面透光部３及びこの前面透光
部３と平行な面で切断した光線反射部４の断面が
楕円形又は長円形でありかつ内部は実質的に真空
にしてある。そして、この反射型外球２の内部に
前記発光管１を収納したうえ、該発光管１のリー
ド線５ａ，５ｂの引出部を反射型外球４の底面の
楕円又は長円の長軸方向に互に離間させて設置し
てある。 If the rated input of this arc tube exceeds 100W, the internal volume of the arc tube and the dimensions of the electrodes and other constituent materials must be increased to withstand the increased heat load that accompanies the increase in lamp current. The overall size increases rapidly, making it unsuitable for portability. In addition, in FIG. 1, 2 is the front transparent part 3.
It is a reflective outer sphere consisting of a light beam reflecting section 4 and a light beam reflecting section 4. The reflective outer sphere 2 has a front transparent portion 3 and a light reflecting portion 4 cut along a plane parallel to the front transparent portion 3, each of which has an elliptical or oval cross section, and has a substantially vacuum inside. . Then, the arc tube 1 is housed inside the reflective outer sphere 2, and the lead wires 5a and 5b of the arc tube 1 are connected in the direction of the long axis of the ellipse or ellipse on the bottom surface of the reflective outer sphere 4. They are placed spaced apart from each other.
このように、反射型外球２の全体形状を楕円形
又は長円形としたのは、発光管１のリード線５
ａ，５ｂの引出部の間隔を最大にしつつ反射型外
球２の体積を最小にすることができ、かつ反射型
外球２自体の耐熱衝撃性を高めることができるか
らである。従来、円形又は角形の反射型外球の内
部に高圧金属蒸気放電灯の発光管を収納したもの
は知られている。しかし、発光管のリード線の間
隔を一定にした場合、円形の反射形外球を用いた
ものは楕円形又は長円形の外球を用いたものに比
べて大形となり、角形の反射形外球を用いたもの
も楕円形又は長円形の外球を用いたものに比べて
やや大形になるだけでなく耐熱衝撃性の点におい
て劣るという欠点がある。 The reason why the overall shape of the reflective outer sphere 2 is made into an ellipse or an oval shape is because of the lead wire 5 of the arc tube 1.
This is because the volume of the reflective outer sphere 2 can be minimized while maximizing the interval between the drawer parts a and 5b, and the thermal shock resistance of the reflective outer sphere 2 itself can be improved. 2. Description of the Related Art Hitherto, a high-pressure metal vapor discharge lamp in which an arc tube of a high-pressure metal vapor discharge lamp is housed inside a circular or square reflective outer sphere is known. However, when the spacing between the lead wires of an arc tube is kept constant, those using a circular reflective outer sphere will be larger than those using an elliptical or oblong outer sphere, and Those using a sphere also have the disadvantage that they are not only slightly larger than those using an elliptical or oblong outer sphere, but also have inferior thermal shock resistance.
次に、本発明において反射型外球２の内部を実
質的に真空にしたのは、高電圧が印加される導体
間の絶縁性を高めるとともに発光管１の熱損失を
少くするためである。 Next, in the present invention, the interior of the reflective outer sphere 2 is made substantially vacuum in order to improve insulation between conductors to which high voltage is applied and to reduce heat loss of the arc tube 1.
なお、発光管１を反射型外球２の内部に収納し
たのは、ランプを灯具に収納することなくそのま
ま使用できるようにし全体的に一層小形にするた
めである。ただし、ランプを小形化しても、発光
管１のリード線５ａ，５ｂの空間最短距離ｌは少
なくとも10mmとしなければならない。この値以上
であれば、定格入力100W以下の発光管を始動さ
せるのに十分な約10KV程度の高電圧に対して十
分な絶縁耐性が得られる。そして、本発明のよう
に楕円形又は長円形の反射型外球を用いれば、外
球寸法を大きくすることなく前記のような値の空
間最短距離をとることは極めて容易である。 The reason why the arc tube 1 is housed inside the reflective outer bulb 2 is to enable the lamp to be used as it is without being housed in the lamp, thereby making the lamp more compact overall. However, even if the lamp is made smaller, the shortest spatial distance l between the lead wires 5a and 5b of the arc tube 1 must be at least 10 mm. If the value is above this value, sufficient insulation resistance will be obtained for a high voltage of approximately 10 KV, which is sufficient to start an arc tube with a rated input of 100 W or less. If an elliptical or oblong reflective outer sphere is used as in the present invention, it is extremely easy to obtain the minimum spatial distance of the above value without increasing the dimensions of the outer sphere.
さらに、本発明においては反射型外球２の内容
積を発光管１の定格入力1Wあたり1.5〜５cm3に選
択する。これはランプの色温度及び平均演色評価
数を良好な値に維持しつつ発光管の動作温度を適
正な範囲に保つて発光効率の低下や寿命時間の短
縮を防ぐためである。第２図は発光管の定格入力
1Wあたりの外球内容積とランプの色温度及び平
均演色評価数との関係を示すものである。この図
から明らかなように、発光管の定格入力1Wあた
りの外球内容積が５cm3を超えると色温度が約5000
〓以上になるとともに平均演色評価数Raは85以
下となり、ビデオ撮影用の光源としては適当でな
くなる。反対に、発光管の定格入力1Wあたりの
外球内容積が1.5cm3未満であると、第３図に示す
ように、動作時の発光管壁温度は急激に高くな
り、寿命特性が著しく低下するだけでなく発光効
率の低下を招く結果となる。 Further, in the present invention, the internal volume of the reflective outer sphere 2 is selected to be 1.5 to 5 cm 3 per 1 W of rated input of the arc tube 1. This is to maintain the color temperature and average color rendering index of the lamp at good values, and to keep the operating temperature of the arc tube within an appropriate range, thereby preventing a decrease in luminous efficiency and a shortening of life time. Figure 2 shows the rated input of the arc tube.
This shows the relationship between the outer bulb inner volume per 1W, the color temperature of the lamp, and the average color rendering index. As is clear from this figure, if the inner volume of the outer bulb exceeds 5cm3 per 1W of rated input of the arc tube, the color temperature will drop to about 5000.
〓As the color rendering index increases, the average color rendering index Ra becomes less than 85, making it unsuitable as a light source for video shooting. On the other hand, if the inner volume of the outer bulb per 1W of rated input of the arc tube is less than 1.5 cm 3 , as shown in Figure 3, the wall temperature of the arc tube increases rapidly during operation, and the life characteristics deteriorate significantly. Not only this, but also a decrease in luminous efficiency results.
次に本発明の具体的実施例について説明する。 Next, specific examples of the present invention will be described.
実施例 １
内容積約0.2cm3の石英管球の内部に0.5mgの水銀
及び150torrのアルゴンガスと共に0.3mgの沃化タ
リウム、１mgの沃化セシウム及び１mgの沃化ジス
プロシウムを封入してなる定格入力50Wの発光管
を用いた。これを前面透光部の長軸が95mm、短軸
が65mmで深さが40mmの楕円形の反射型外球に収納
した。反射型外球２の内部は１×10-4torr程度以
上の真空となるように排気した。さらに発光管の
リード線間の空間最短距離は15mmとした。Example 1 A quartz tube with an internal volume of approximately 0.2 cm 3 is filled with 0.3 mg of thallium iodide, 1 mg of cesium iodide, and 1 mg of dysprosium iodide along with 0.5 mg of mercury and 150 torr of argon gas. An arc tube with an input of 50W was used. This was housed in an elliptical reflective outer sphere with a long axis of 95 mm, a short axis of 65 mm, and a depth of 40 mm. The interior of the reflective outer sphere 2 was evacuated to a vacuum of approximately 1×10 −4 torr or higher. Furthermore, the shortest spatial distance between the lead wires of the arc tube was set to 15 mm.
かかるランプをチヨークコイル形安定器を介し
て100Vの商用交流電源に接続し、再始動時にの
み最大値13KVの高電圧パルスを印加して始動点
灯させた。その結果、約20ｍｓで瞬時に始動し、
定格入力における点灯時の発光効率は約55lｍ／
Ｗ、色温度は4500〓であつた。 The lamp was connected to a 100V commercial AC power source via a chiyoke coil type ballast, and a high voltage pulse of a maximum value of 13KV was applied only when restarting to start and light the lamp. As a result, it starts instantly in about 20ms,
Luminous efficiency when lit at rated input is approximately 55lm/
W, the color temperature was 4500〓.
実施例 ２
内容積約0.16cm3の石英管球の内部に２mgの水銀
及び150torrのアルゴンガスと共に0.05mgのトリ
ウム、１mgの沃化スカンジウム及び５mgの沃化ナ
トリウムを封入してなる定格入力40Wの発光管を
用いた。これを前面開口部の長軸が90mm、短軸が
60mmで深さが40mmの長円形の反射型外球に収納し
た。反射型外球の内部は１×10-4torr程度以上の
真空となるように排気した。さらに発光管のリー
ド線の空間最短距離を18mmとした。Example 2 A quartz tube with an internal volume of approximately 0.16 cm 3 was filled with 0.05 mg of thorium, 1 mg of scandium iodide, and 5 mg of sodium iodide along with 2 mg of mercury and 150 torr of argon gas, with a rated input of 40 W. An arc tube was used. The long axis of the front opening is 90mm, and the short axis is
It was housed in an oval reflective outer sphere with a length of 60 mm and a depth of 40 mm. The interior of the reflective outer sphere was evacuated to a vacuum of approximately 1×10 −4 torr or higher. Furthermore, the shortest spatial distance of the lead wire of the arc tube was set to 18 mm.
かかるランプをチヨークコイル形安定器を介し
て100Vの商用交流電源に接続し、再始動時に最
大値15KVの高電圧パルスを印加して始動点灯さ
せた。その結果、約30ｍｓで瞬時に始動し、定格
入力における点灯時の発光効率は約60lｍ／Ｗ、
色温度は約3900〓であつた。 This lamp was connected to a 100V commercial AC power source via a chiyoke coil type ballast, and when restarting, a high voltage pulse of a maximum value of 15KV was applied to start and light the lamp. As a result, it starts instantly in about 30ms, and the luminous efficiency when lit at the rated input is about 60lm/W.
The color temperature was approximately 3900〓.
以上の説明から明らかなように、本発明によれ
ば、ビデオ撮影等の光源としての各条件を総合的
に満足させることができる反射型小形メタルハラ
イドランプを提供することができる。 As is clear from the above description, according to the present invention, it is possible to provide a small reflective metal halide lamp that can comprehensively satisfy various conditions as a light source for video shooting and the like.
第１図ａ，ｂはそれぞれ本発明に係る反射型小
形メタルハライドランプの一部を切り欠いて示し
た平面図及び側面図、第２図は同メタルハライド
ランプのランプ入力1Wあたりの外球内容積と平
均演色評価数及び色温度の関係図、第３図は同じ
くランプ入力1Wあたりの外球内容積と発光管表
面の最大温度との関係図である。
Figures 1a and b are a partially cutaway plan view and side view of a small reflective metal halide lamp according to the present invention, respectively, and Figure 2 shows the outer bulb internal volume per 1W of lamp input of the same metal halide lamp. Figure 3 is a diagram showing the relationship between the average color rendering index and color temperature, and is also a diagram showing the relationship between the outer bulb inner volume and the maximum temperature of the arc tube surface per 1 W of lamp input.
Claims (1)
球の内部に適量の水銀及び希ガスと共に金属ハロ
ゲン化物を封入してなる定格入力100W以下の発
光管１を、前面透光部及びこの前面透光部と平行
な面で切断した光線反射部の断面が楕円形又は長
円形でありかつ内部が実質的に真空である反射型
外球２の内部に収納し、前記発光管１のリード線
５ａ，５ｂの引出部を前記反射型外球２の底面の
楕円又は長円の長軸方向に互に離間して位置させ
るとともに、前記リード線５ａ，５ｂの空間最短
距離を10mm以上とし、さらに前記反射型外球２の
内容積を発光管１の定格入力1Wあたり1.5〜5.0
cm3としたことを特徴とする反射型小形メタルハラ
イドランプ。1. A light emitting tube 1 with a rated input of 100 W or less, which is made of a quartz tube with an internal volume of 1 cm 3 or less and having electrodes at both ends and a metal halide sealed together with an appropriate amount of mercury and a rare gas, is attached to the front transparent part and this front surface. The light reflecting part cut along a plane parallel to the light transmitting part is housed inside a reflective outer sphere 2 whose cross section is elliptical or oblong and whose interior is substantially vacuum, and the lead wire of the arc tube 1 is 5a and 5b are located apart from each other in the long axis direction of the ellipse or ellipse on the bottom surface of the reflective outer sphere 2, and the shortest spatial distance between the lead wires 5a and 5b is 10 mm or more, and The internal volume of the reflective outer sphere 2 is 1.5 to 5.0 per 1W of rated input of the arc tube 1.
A small reflective metal halide lamp characterized by cm 3 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202535A JPS6095849A (en) | 1983-10-31 | 1983-10-31 | Reflection type compact metal halide lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58202535A JPS6095849A (en) | 1983-10-31 | 1983-10-31 | Reflection type compact metal halide lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6095849A JPS6095849A (en) | 1985-05-29 |
| JPH0444386B2 true JPH0444386B2 (en) | 1992-07-21 |
Family
ID=16459104
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58202535A Granted JPS6095849A (en) | 1983-10-31 | 1983-10-31 | Reflection type compact metal halide lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6095849A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2825231B2 (en) * | 1988-03-29 | 1998-11-18 | 株式会社和廣武 | Lighting lamp equipment |
| JPH04129162A (en) * | 1990-09-18 | 1992-04-30 | Pioneer Electron Corp | Illuminant for projection |
| KR100295214B1 (en) * | 1998-12-16 | 2001-07-12 | 강석원 | Manufacturing method of outdoor lamp with reinforcement thickness for damage prevention |
-
1983
- 1983-10-31 JP JP58202535A patent/JPS6095849A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6095849A (en) | 1985-05-29 |
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