JPH10214594A - High-pressure sodium lamp - Google Patents
High-pressure sodium lampInfo
- Publication number
- JPH10214594A JPH10214594A JP1687197A JP1687197A JPH10214594A JP H10214594 A JPH10214594 A JP H10214594A JP 1687197 A JP1687197 A JP 1687197A JP 1687197 A JP1687197 A JP 1687197A JP H10214594 A JPH10214594 A JP H10214594A
- Authority
- JP
- Japan
- Prior art keywords
- photon flux
- approximately
- lamp
- arc tube
- pressure sodium
- 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
Landscapes
- Cultivation Of Plants (AREA)
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高圧ナトリウムラ
ンプに関し、特に植物の栽培に適した高圧ナトリウムラ
ンプに関するものである。The present invention relates to a high-pressure sodium lamp, and more particularly to a high-pressure sodium lamp suitable for plant cultivation.
【０００２】[0002]
【従来の技術】従来より、人工光源を利用して植物を栽
培することが各所で研究されている。この種の植物栽培
用の人工光源においては、照明学会誌７９巻４号（１９
９５年）の１４９頁乃至１５０頁に記載されているよう
に、波長が６００ｎｍ乃至７００ｎｍの光子束ＰＦ
1 と、波長が７００ｎｍ乃至８００ｎｍの光子束ＰＦ2
との光子束比ＰＦ1 ／ＰＦ2 が植物の成長を制御する指
標とされており、この光子束比ＰＦ1 ／ＰＦ2 を０．９
前後の値に設定することが望ましいとされている。2. Description of the Related Art Hitherto, cultivation of plants using artificial light sources has been studied in various places. This type of artificial light source for plant cultivation is described in Journal of the Illuminating Engineering Institute, Vol. 79, No. 4 (19
(1995), pp. 149 to 150, a photon flux PF having a wavelength of 600 nm to 700 nm.
1 and a photon flux PF 2 having a wavelength of 700 nm to 800 nm
And the photon flux ratio PF 1 / PF 2 are an index for controlling the growth of plants, the photon flux ratio PF 1 / PF 2 0.9
It is said that it is desirable to set the value before and after.
【０００３】[0003]
【発明が解決しようとする課題】ところで、この種の植
物栽培用の人工光源（育苗用ランプ）としては、一般に
白熱電球が使用されているが、白熱電球は一灯当たりの
光子束が小さいので、エネルギ消費量が多く栽培面積が
広くなると使用コストが非常に高くなってしまうという
問題があった。この種の問題を解決するために、特開平
３−１１２０４８号公報、特公昭６２−５１９３２号公
報及び実開昭４０−３４７９４号公報において、植物栽
培用のＨＩＤランプが開示され、また、特開平５−２１
７５５６号公報において、植物栽培用の蛍光ランプが開
示されている。An incandescent light bulb is generally used as an artificial light source (lamp for raising seedlings) for this kind of plant cultivation, but the incandescent light bulb has a small photon flux per light. However, when the cultivation area is large due to large energy consumption, there is a problem that the use cost becomes very high. In order to solve this kind of problem, HID lamps for plant cultivation are disclosed in JP-A-3-112048, JP-B-62-51932 and JP-A-40-34794. 5-21
Japanese Patent No. 7556 discloses a fluorescent lamp for plant cultivation.
【０００４】しかしながら、上記ＨＩＤランプにおいて
は、上述の光子束比ＰＦ1 ／ＰＦ2が植物栽培に適して
おらず、また、上記蛍光ランプでは一灯当たりの出力が
小さいため、多数のランプや器具が必要となって設備が
高価になるという問題があった。本発明は上記事由に鑑
みて為されたものであり、その目的は、植物栽培に適し
使用コストの低い高圧ナトリウムランプを提供すること
にある。However, in the above-mentioned HID lamp, the above-mentioned photon flux ratio PF 1 / PF 2 is not suitable for plant cultivation, and the output per lamp of the above-mentioned fluorescent lamp is small, so that many lamps and fixtures are used. However, there is a problem that equipment becomes expensive due to the necessity. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a high-pressure sodium lamp suitable for plant cultivation and having a low use cost.
【０００５】[0005]
【課題を解決するための手段】請求項１の発明は、上記
目的を達成するために、透光性及び耐アルカリ性を有す
る材料よりなり金属ナトリウムとキセノンガスが封入さ
れた発光管と、前記発光管を内蔵し密封された外管とを
備え、点灯時における略７００乃至略８００ｎｍの波長
帯に含まれる光子束に対する略６００乃至略７００ｎｍ
の波長帯に含まれる光子束の比が略０．４乃至略１．７
となることを特徴とするものであり、白熱電球のような
従来の植物栽培用の人工光源よりも植物栽培に適し、使
用コストも低く抑えることができる。In order to achieve the above object, the invention of claim 1 provides an arc tube made of a material having translucency and alkali resistance and filled with sodium metal and xenon gas; A sealed outer tube having a built-in tube, and having a wavelength of approximately 600 to approximately 700 nm for a photon flux included in a wavelength band of approximately 700 to approximately 800 nm during lighting.
Is about 0.4 to about 1.7.
It is more suitable for plant cultivation than a conventional artificial light source for plant cultivation such as an incandescent lamp, and the use cost can be reduced.
【０００６】請求項２の発明は、請求項１の発明におい
て、発光管が多結晶アルミナからなるものであり、請求
項１の発明の実施態様である。請求項３の発明は、請求
項１の発明において、発光管が単結晶アルミナからなる
ものであり、請求項１の発明の実施態様である。請求項
４の発明は、請求項１乃至請求項３の発明において、キ
セノンガスのガス圧を、２５℃において略２．５×１０
4 Ｐａ乃至略６．７×１０4 Ｐａとしたものであり、請
求項１乃至請求項３の発明の実施態様である。A second aspect of the present invention is an embodiment of the first aspect of the present invention, wherein the arc tube is made of polycrystalline alumina. A third aspect of the present invention is an embodiment of the first aspect of the present invention, wherein the arc tube is made of single crystal alumina. According to a fourth aspect of the present invention, in the first to third aspects of the present invention, the gas pressure of the xenon gas is set to about 2.5 × 10 at 25 ° C.
4 Pa to approximately 6.7 × 10 4 Pa, which is an embodiment of the first to third aspects of the present invention.
【０００７】請求項５の発明は、請求項１乃至請求項４
の発明において、発光管の内径をφ〔ｍｍ〕、ランプ入
力をＷ〔ｗ〕としたとき、Ｗ／φの値を略２７．６〔ｗ
／ｍｍ〕乃至略４１．２〔ｗ／ｍｍ〕としたものであ
り、請求項１乃至請求項４の発明の実施態様である。請
求項６の発明は、透光性の多結晶アルミナからなり金属
ナトリウムとキセノンガスが封入された発光管と、前記
発光管を内蔵し密封された外管とを備え、前記キセノン
ガスは略２．５×１０4 Ｐａ乃至略６．７×１０4 Ｐａ
封入され、点灯時における略７００乃至略８００ｎｍの
波長帯に含まれる光子束に対する略６００乃至略７００
ｎｍの波長帯に含まれる光子束の比が０．４乃至１．７
となることを特徴とするものであり、白熱電球のような
従来の植物栽培用の人工光源よりも植物栽培に適し、使
用コストも低く抑えることができる。[0007] The invention according to claim 5 is the invention according to claims 1 to 4.
In the invention, when the inner diameter of the arc tube is φ [mm] and the lamp input is W [w], the value of W / φ is approximately 27.6 [w].
/ Mm] to about 41.2 [w / mm], which is an embodiment of the invention according to claims 1 to 4. According to a sixth aspect of the present invention, there is provided an arc tube made of translucent polycrystalline alumina and filled with metallic sodium and xenon gas, and a sealed outer tube containing the arc tube. 0.5 × 10 4 Pa to about 6.7 × 10 4 Pa
About 600 to about 700 for a photon flux enclosed and contained in a wavelength band of about 700 to about 800 nm during lighting.
The ratio of the photon flux included in the wavelength band of nm is 0.4 to 1.7.
It is more suitable for plant cultivation than a conventional artificial light source for plant cultivation such as an incandescent lamp, and the use cost can be reduced.
【０００８】[0008]
【発明の実施の形態】本実施形態は、図１に示すよう
に、両端部に導電管２、３が挿入され金属ナトリウム及
びキセノンガスが封入された円筒状の発光管１と、発光
管１を内蔵する筒状の外管９とを備える。ここで、導電
管２、３はニオビウム（Ｎｂ）と１％のジルコニウム
（Ｚｒ）とからなり、酸化アルミニウム（Ａｌ2 Ｏ3 ）
−酸化イットリウム（Ｙ2 Ｏ3 ）−酸化ストロンチウム
（ＳｒＯ）−酸化カルシウム（ＣａＯ）からなるフリッ
ト４、５で発光管１と気密に封じられている。導電管
２、３の発光管１の内部側の先端には夫々電極６、７が
保持されており、電極６、７には酸化イットリウムが電
子放射性物質として塗布、焼付けされている。外管９の
一端部には口金１２が設けられ、発光管１の電極６、７
と口金１２との間は、内部導入線２２、２１及び発光管
支持板２３、２４により電気的に接続される。外管９の
内部にはバリウムのゲッタ１１が封入されており、外管
９の内部はゲッタ１１によって高真空に排気されてい
る。発光管１及び外管９は透光性材料により形成される
ものであって、発光管１としては耐アルカリ性を有する
多結晶アルミナ又は単結晶アルミナを用い、外管９には
硬化ガラスを用いる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 1, the present embodiment comprises a cylindrical arc tube 1 having conductive tubes 2 and 3 inserted at both ends and enclosing metallic sodium and xenon gas, and an arc tube 1 as shown in FIG. And a cylindrical outer tube 9 having a built-in. Here, the conductive tubes 2 and 3 are made of niobium (Nb) and 1% zirconium (Zr), and are made of aluminum oxide (Al 2 O 3 ).
The light emitting tube 1 is hermetically sealed with frits 4 and 5 made of yttrium oxide (Y 2 O 3 ) -strontium oxide (SrO) -calcium oxide (CaO). Electrodes 6 and 7 are held at the tips of the conductive tubes 2 and 3 on the inner side of the arc tube 1, respectively, and yttrium oxide is applied and baked on the electrodes 6 and 7 as an electron-emitting substance. A base 12 is provided at one end of the outer tube 9, and the electrodes 6, 7 of the arc tube 1 are provided.
The base 12 and the base 12 are electrically connected by the internal introduction lines 22 and 21 and the arc tube support plates 23 and 24. A barium getter 11 is sealed inside the outer tube 9, and the inside of the outer tube 9 is evacuated to a high vacuum by the getter 11. The arc tube 1 and the outer tube 9 are made of a translucent material. The arc tube 1 is made of polycrystalline alumina or single crystal alumina having alkali resistance, and the outer tube 9 is made of hardened glass.
【０００９】また、本実施形態は、発光管１の外壁に沿
って略両電極６、７間にわたり近接導体１０を配置して
ある。近接導体１０は上述の内部導入線２１に接続され
ている。さらに、外管９にはバイメタルと抵抗とからな
る始動用のスタータ１３も納装してある。安定器にはチ
ョーク式のものを用いる。なお、スタータは、非線形コ
ンデンサ等を用いた電子式のものでもよく、安定器に内
蔵してもよい。In the present embodiment, the proximity conductor 10 is disposed along the outer wall of the arc tube 1 and substantially between the electrodes 6 and 7. The proximity conductor 10 is connected to the internal introduction line 21 described above. Further, a starter 13 for starting composed of a bimetal and a resistor is provided in the outer tube 9. Use a choke ballast. The starter may be of an electronic type using a non-linear capacitor or the like, or may be built in a ballast.
【００１０】[0010]
【実施例】図１に示す構成の高圧ナトリウムランプにお
いて、発光管１は、多結晶アルミナからなり、内径１
０．８ｍｍ、外径１２．４ｍｍ、全長８０ｍｍとし、５
ｍｇの金属ナトリウムと２５℃において４×１０4 Ｐａ
のキセノンガスとを封入してある。電極６、７間の間隔
は５７ｍｍである。また、外管９は、外径を５０ｍｍと
した。DESCRIPTION OF THE PREFERRED EMBODIMENTS In a high-pressure sodium lamp having the structure shown in FIG. 1, an arc tube 1 is made of polycrystalline alumina.
0.8 mm, outer diameter 12.4 mm, total length 80 mm
mg of metallic sodium and 4 × 10 4 Pa at 25 ° C.
Xenon gas. The distance between the electrodes 6, 7 is 57 mm. The outer diameter of the outer tube 9 was 50 mm.
【００１１】いま、図１の構成の高圧ナトリウムランプ
をチョーク式の安定器で点灯した。ランプ定格入力が４
００Ｗの時の分光特性を図２に示す。なお、この時のラ
ンプ電圧は１１０Ｖ、ランプ電流は４．８Ａであった。
図２の分光特性より求めた光子束比ＰＦ1 ／ＰＦ2 は略
０．９であり、本実施例の高圧ナトリウムランプは、植
物栽培に適した光子束比ＰＦ1 ／ＰＦ2 が実現されてい
る。Now, the high-pressure sodium lamp having the structure shown in FIG. 1 is turned on by a choke type ballast. Lamp rated input is 4
FIG. 2 shows the spectral characteristics at the time of 00W. At this time, the lamp voltage was 110 V and the lamp current was 4.8 A.
The photon flux ratio PF 1 / PF 2 obtained from the spectral characteristics in FIG. 2 is approximately 0.9, and the high-pressure sodium lamp of the present embodiment achieves a photon flux ratio PF 1 / PF 2 suitable for plant cultivation. I have.
【００１２】このような仕様の高圧ナトリウムランプを
１０本試作し、苗床に播植されたレタスの栽培実験を行
った。栽培実験は、苗床から１．５ｍの高さの位置に高
圧ナトリウムランプを配置して１日当たり１０時間の点
灯を１５日間続けた場合と、苗床から１．５ｍの高さの
位置に５００Ｗの白熱電球を同じ数だけ配置して１日当
たり１０時間の点灯を１５日間続けた場合とで、成長し
たレタスの重量を比較することを行った。その結果、本
実施例の高圧ナトリウムランプでは、白熱電球の光を照
射した場合に比べて重量比で略１．８倍のレタスを収穫
することができた。つまり、本実施例の高圧ナトリウム
ランプが植物栽培用の人工光源として有効であることが
確認された。[0012] Ten high-pressure sodium lamps of such specifications were prototyped, and cultivation experiments of lettuce seeded on the nursery were performed. Cultivation experiments consisted of a case where a high-pressure sodium lamp was placed at a height of 1.5 m from the nursery and lighting was continued for 10 hours per day for 15 days, and a case where a 500 W incandescent lamp was placed at a height of 1.5 m from the nursery. The weight of grown lettuce was compared with the case where the same number of bulbs were arranged and the lighting was continued for 10 hours per day for 15 days. As a result, in the high-pressure sodium lamp of the present example, lettuce having a weight ratio of about 1.8 times that in the case where light from an incandescent lamp was irradiated could be harvested. That is, it was confirmed that the high-pressure sodium lamp of this example was effective as an artificial light source for plant cultivation.
【００１３】つぎに、同様の実験において、高圧ナトリ
ウムランプのランプ入力を変化させることによって光子
束比ＰＦ1 ／ＰＦ2 を０．３から１．９まで変化させて
白熱電球との比較を行った結果を図３に示す。なお、図
３中の成長比は上述の重量比を示す値である。図３よ
り、光子束比ＰＦ1 ／ＰＦ2 が０．４乃至１．７の範囲
で成長比が１以上の値になり、本実施例の高圧ナトリウ
ムランプでは光子束比ＰＦ1 ／ＰＦ2 として０．４乃至
１．７が望ましいことがわかった。Next, in a similar experiment, the photon flux ratio PF 1 / PF 2 was changed from 0.3 to 1.9 by changing the lamp input of the high-pressure sodium lamp, and a comparison with an incandescent lamp was performed. The results are shown in FIG. The growth ratio in FIG. 3 is a value indicating the above-mentioned weight ratio. Than 3, the growth ratio in the range of photon flux ratio PF 1 / PF 2 is 0.4 to 1.7 is set to 1 or more values, as the photon flux ratio PF 1 / PF 2 is a high pressure sodium lamp of the present embodiment It has been found that 0.4 to 1.7 is desirable.
【００１４】なお、２５℃におけるキセノンガスのガス
圧は、２．５×１０4 Ｐａ未満では緩衝ガスとしての効
果が少なく入力が少なくなり、６．７×１０4 Ｐａより
も高くなると始動電圧が高くなりすぎる（６．７×１０
4 Ｐａの時の始動電圧は約５ｋＶであった）ため、始動
装置が高価になるとともに、点灯回路の構成素子の耐圧
等の問題がある。このため、キセノンガスのガス圧とし
ては、略２．５×１０ 4 Ｐａ乃至６．７×１０4 Ｐａが
望ましい。The gas of xenon gas at 25 ° C.
The pressure is 2.5 × 10FourIf less than Pa, the effect as a buffer gas
The result is small and the input is small, 6.7 × 10FourFrom Pa
Becomes too high, the starting voltage becomes too high (6.7 × 10
FourThe starting voltage at the time of Pa was about 5 kV.)
The device becomes expensive and the breakdown voltage of the components of the lighting circuit
There are problems such as. Therefore, the gas pressure of xenon gas is
About 2.5 × 10 FourPa to 6.7 × 10FourPa is
desirable.
【００１５】ところで、発光管１の管壁温度が１２００
℃以上になると、点灯中にナトリウムと多結晶アルミナ
との反応が促進するので、定格ランプ入力時にける発光
管１の管壁温度を１２００℃以下に抑制する必要があ
る。また、光子束比ＰＦ1 ／ＰＦ2 は上述のように０．
４乃至１．７にする必要があるから、発光管１の内径を
φ〔ｍｍ〕、ランプ定格入力をＷ〔ｗ〕としたとき、Ｗ
／φを２７．６〔ｗ／ｍｍ〕乃至４１．２〔ｗ／ｍｍ〕
にする必要がある。ここで、Ｗ／φが４１．２を越える
と光子束比ＰＦ1 ／ＰＦ2 が１．７を越えてしまい、他
方、Ｗ／φが２７．６よりも小さくなると、ＰＦ1 ／Ｐ
Ｆ2 が０．４未満となる。By the way, if the tube wall temperature of the arc tube 1 is 1200
If the temperature is higher than or equal to ° C, the reaction between sodium and polycrystalline alumina is accelerated during lighting. Therefore, it is necessary to suppress the tube wall temperature of the arc tube 1 when the rated lamp is input to 1200 ° C or less. Further, the photon flux ratio PF 1 / PF 2 is set to 0.1 as described above.
Since it is necessary to set the inner diameter of the arc tube 1 to φ [mm] and the lamp rated input to W [w], W
/ Φ from 27.6 [w / mm] to 41.2 [w / mm]
Need to be Here, if W / φ exceeds 41.2, the photon flux ratio PF 1 / PF 2 exceeds 1.7, while if W / φ is smaller than 27.6, PF 1 / P
F 2 is less than 0.4.
【００１６】なお、本実施例では、高圧ナトリウムラン
プを直管形ランプとしたが、外管にフレクタ形のバルブ
を使用すれば、照明器具なしで苗床とは反対側のランプ
の上方へ漏れる無駄な光量子が減少しエネルギを有効に
利用することができる。In this embodiment, the high-pressure sodium lamp is a straight tube type lamp. However, if a reflector type bulb is used for the outer tube, there is no waste light leaking above the lamp on the opposite side of the nursery without a lighting device. Light quantum is reduced, and energy can be used effectively.
【００１７】[0017]
【発明の効果】請求項１乃至請求項５の発明は、透光性
及び耐アルカリ性を有する材料よりなり金属ナトリウム
とキセノンガスが封入された発光管と、前記発光管を内
蔵し密封された外管とを備え、点灯時における略７００
乃至略８００ｎｍの波長帯に含まれる光子束に対する略
６００乃至略７００ｎｍの波長帯に含まれる光子束の比
が略０．４乃至略１．７となるので、白熱電球のような
従来の植物栽培用の人工光源よりも植物栽培に適し、使
用コストも低く抑えることができるとい効果がある。According to the first to fifth aspects of the present invention, there is provided an arc tube which is made of a material having translucency and alkali resistance and in which sodium metal and xenon gas are sealed, and an outer tube in which the arc tube is built and sealed. And a tube, approximately 700 at the time of lighting.
Since the ratio of the photon flux included in the wavelength band of about 600 to about 700 nm to the photon flux included in the wavelength band of about 800 nm is about 0.4 to about 1.7, the conventional plant cultivation such as an incandescent lamp is used. It is more suitable for plant cultivation than an artificial light source for use, and the use cost can be kept low.
【００１８】請求項６の発明は、透光性の多結晶アルミ
ナからなり金属ナトリウムとキセノンガスが封入された
発光管と、前記発光管を内蔵し密封された外管とを備
え、前記キセノンガスは略２．５×１０4 Ｐａ乃至略
６．７×１０4 Ｐａ封入され、点灯時における略７００
乃至略８００ｎｍの波長帯に含まれる光子束に対する略
６００乃至略７００ｎｍの波長帯に含まれる光子束の比
が０．４乃至１．７となるので、白熱電球のような従来
の植物栽培用の人工光源よりも植物栽培に適し、使用コ
ストも低く抑えることができるという効果がある。According to a sixth aspect of the present invention, there is provided an arc tube made of translucent polycrystalline alumina in which metallic sodium and xenon gas are sealed, and an outer tube containing the arc tube and hermetically sealed. Is approximately 2.5 × 10 4 Pa to approximately 6.7 × 10 4 Pa, and approximately 700 at the time of lighting.
Since the ratio of the photon flux included in the wavelength band of about 600 to about 700 nm to the photon flux included in the wavelength band of about 800 nm is 0.4 to 1.7, it is suitable for conventional plant cultivation such as incandescent lamps. There is an effect that it is more suitable for plant cultivation than an artificial light source and the use cost can be suppressed.
【図１】実施形態の構成説明図である。FIG. 1 is a configuration explanatory diagram of an embodiment.
【図２】同上の定格点灯時における光の分光特性図であ
る。FIG. 2 is a diagram showing a spectral characteristic of light at the time of rated lighting according to the first embodiment.
【図３】同上の実施例の高圧ナトリウムランプによりレ
タスの栽培を行った結果の説明図である。FIG. 3 is an explanatory diagram showing the result of cultivating lettuce using the high-pressure sodium lamp of the above embodiment.
１ 発光管 ２，３ 導電管 ４，５ フリット ６，７ 電極 ８ 金属ナトリウム ９ 外管 １０ 近接導体 １１ ゲッタ １２ 口金 １３ スタータ DESCRIPTION OF SYMBOLS 1 Arc tube 2, 3 Conductive tube 4, 5 Frit 6, 7 Electrode 8 Metal sodium 9 Outer tube 10 Proximity conductor 11 Getter 12 Base 13 Starter
フロントページの続き (72)発明者 森田 富彦 大阪府門真市大字門真1048番地 松下電工 株式会社内 (72)発明者 洞口 公俊 京都府相楽郡精華町光台３−４ 松下電器 産業株式会社研究本部照明研究所内 (72)発明者 村上 克介 兵庫県尼崎市塚口町１丁目27番地の５− 306Continuing on the front page (72) Inventor Tomihiko Morita 1048 Kadoma, Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Kimitoshi Doguchi 3-4 Kodai, Seika-cho, Soraku-gun, Kyoto Prefecture Matsushita Electric Industrial Co., Ltd. In the laboratory (72) Inventor Katsusuke Murakami 5-306, 1-27 Tsukaguchi-cho, Amagasaki City, Hyogo Prefecture
Claims (6)
りなり金属ナトリウムとキセノンガスが封入された発光
管と、前記発光管を内蔵し密封された外管とを備え、点
灯時における略７００乃至略８００ｎｍの波長帯に含ま
れる光子束に対する略６００乃至略７００ｎｍの波長帯
に含まれる光子束の比が略０．４乃至略１．７となるこ
とを特徴とする高圧ナトリウムランプ。1. An arc tube made of a material having translucency and alkali resistance and filled with metallic sodium and xenon gas, and a sealed outer tube containing the arc tube. A high-pressure sodium lamp, wherein a ratio of a photon flux included in a wavelength band of about 600 to about 700 nm to a photon flux included in a wavelength band of about 800 nm is about 0.4 to about 1.7.
特徴とする請求項１記載の高圧ナトリウムランプ。2. The high-pressure sodium lamp according to claim 1, wherein the arc tube is made of polycrystalline alumina.
特徴とする請求項１記載の高圧ナトリウムランプ。3. The high pressure sodium lamp according to claim 1, wherein the arc tube is made of single crystal alumina.
て略２．５×１０4Ｐａ乃至略６．７×１０4 Ｐａであ
ることを特徴とする請求項１乃至請求項３記載の高圧ナ
トリウムランプ。4. The high-pressure sodium according to claim 1, wherein the gas pressure of the xenon gas is approximately 2.5 × 10 4 Pa to approximately 6.7 × 10 4 Pa at 25 ° C. lamp.
をＷ〔ｗ〕としたとき、Ｗ／φの値が略２７．６〔ｗ／
ｍｍ〕乃至略４１．２〔ｗ／ｍｍ〕であることを特徴と
する請求項１乃至請求項４記載の高圧ナトリウムラン
プ。5. When the inner diameter of the arc tube is φ [mm] and the lamp input is W [w], the value of W / φ is approximately 27.6 [w /
The high-pressure sodium lamp according to any one of claims 1 to 4, wherein the pressure is in the range of 1 mm to 41.2 [w / mm].
トリウムとキセノンガスが封入された発光管と、前記発
光管を内蔵し密封された外管とを備え、前記キセノンガ
スは略２．５×１０4 Ｐａ乃至略６．７×１０4 Ｐａ封
入され、点灯時における略７００乃至略８００ｎｍの波
長帯に含まれる光子束に対する略６００乃至略７００ｎ
ｍの波長帯に含まれる光子束の比が略０．４乃至略１．
７となることを特徴とする高圧ナトリウムランプ。6. An arc tube made of translucent polycrystalline alumina and filled with metallic sodium and xenon gas, and an outer tube containing the arc tube and sealed therein, wherein the xenon gas is approximately 2.5. × 10 4 Pa to approximately 6.7 × 10 4 Pa sealed, and approximately 600 to approximately 700 n for a photon flux included in a wavelength band of approximately 700 to approximately 800 nm during lighting.
m, the ratio of the photon flux included in the wavelength band is about 0.4 to about 1.
7. A high-pressure sodium lamp, characterized in that:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1687197A JPH10214594A (en) | 1997-01-30 | 1997-01-30 | High-pressure sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1687197A JPH10214594A (en) | 1997-01-30 | 1997-01-30 | High-pressure sodium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10214594A true JPH10214594A (en) | 1998-08-11 |
Family
ID=11928271
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1687197A Pending JPH10214594A (en) | 1997-01-30 | 1997-01-30 | High-pressure sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10214594A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1156512A1 (en) * | 2000-05-19 | 2001-11-21 | Ushio Denki Kabushiki Kaisya | Discharge lamp for photodynamic therapy and photodynamic diagnosis |
| KR100845771B1 (en) | 2008-01-29 | 2008-07-11 | 주식회사 금오전기 | Lamp appliance for gardening |
-
1997
- 1997-01-30 JP JP1687197A patent/JPH10214594A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1156512A1 (en) * | 2000-05-19 | 2001-11-21 | Ushio Denki Kabushiki Kaisya | Discharge lamp for photodynamic therapy and photodynamic diagnosis |
| KR100845771B1 (en) | 2008-01-29 | 2008-07-11 | 주식회사 금오전기 | Lamp appliance for gardening |
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