JPS6168852A - Reflection-type high pressure sodium lamp - Google Patents
Reflection-type high pressure sodium lampInfo
- Publication number
- JPS6168852A JPS6168852A JP19103884A JP19103884A JPS6168852A JP S6168852 A JPS6168852 A JP S6168852A JP 19103884 A JP19103884 A JP 19103884A JP 19103884 A JP19103884 A JP 19103884A JP S6168852 A JPS6168852 A JP S6168852A
- Authority
- JP
- Japan
- Prior art keywords
- outer tube
- alumina
- pressure sodium
- tube
- sodium 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
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
- H01J61/35—Vessels; Containers provided with coatings on the walls thereof; Selection of materials for the coatings
Landscapes
- 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
本発明は反射形高圧ナトリウム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 reflective high pressure sodium lamps.
従来例の構成とその問題点
高温のナトリウム蒸気に耐える透光性のアルミナ管から
なる発光管内にナトリウム、緩衝ガス用金属および始動
用希ガスを封入した高圧ナトリウムランプは、高効率な
ところから現代の省エネルギ一時代に適したランプとし
て普及しつつある。Conventional structure and its problems High-pressure sodium lamps, in which sodium, buffer gas metal, and starting rare gas are sealed in an arc tube made of a translucent alumina tube that can withstand high-temperature sodium vapor, are highly efficient and have become popular in modern times. It is becoming popular as an energy-saving lamp suitable for this era.
一般に、外管にアルミニウムなどの反射膜全形成した反
射形ランプは、配光制御が容易なところから照明器具を
用いないで単体で必要な部分のみを照明することができ
る利点がある。このような反射形ラングにおいては、配
光むらを防止するために、反射膜上に拡散膜を形成して
いる。この場合、拡散膜としては、０．１〜１ｏμの粒
径のピロリン酸カルシウム（Ｃａ２Ｐ２ｏ７）が用いら
れ、静電塗装または液体による付着方法が採られている
。In general, a reflective lamp whose outer bulb is entirely coated with a reflective film made of aluminum or the like has the advantage of being able to illuminate only the necessary areas without the use of a lighting fixture, since light distribution can be easily controlled. In such a reflective rung, a diffusion film is formed on the reflective film in order to prevent uneven light distribution. In this case, calcium pyrophosphate (Ca2P2o7) having a particle size of 0.1 to 1 μm is used as the diffusion film, and an electrostatic coating or a liquid adhesion method is adopted.
しかしながら、高圧ナトリウムランプにおいて、従来の
このような拡散膜では、中心光度が低下しビーム角が広
が９、照明経済上不利益となるという欠点があった。However, in high-pressure sodium lamps, such a conventional diffusion film has the disadvantage that the central luminous intensity decreases and the beam angle widens9, which is disadvantageous in terms of lighting economy.
発明の目的
本発明は中心光度を向上し、ビーム角を狭ばめた反射形
高圧ナトリウムラーンプを提供するものである。OBJECTS OF THE INVENTION The present invention provides a reflective high pressure sodium lamp with improved center luminous intensity and narrowed beam angle.
発明の構成
本発明は、外管の背面部内面に形成した反射膜上および
外管の頂部内面にアルミナおよびノリ力のうち少なくと
も一種からなる被膜を形成した反財形高圧ナトリウムラ
ンプ企特徴とするものである。Components of the Invention The present invention is characterized by a reversible high-pressure sodium lamp in which a coating made of at least one of alumina and Noriyoku is formed on the reflective film formed on the inner surface of the back surface of the outer bulb and on the inner surface of the top of the outer bulb. It is.
実検例の説明
以下、本発明の一実捲例について図面を用いて説明する
。DESCRIPTION OF EMBODIMENT OF THE INVENTION Hereinafter, an example of actual winding of the present invention will be explained with reference to the drawings.
図において、１は直径１００簡のガラスからなる外管で
あり、その背面にはアルミニウムなどからなる反射膜２
か形成されている。さらに、反射膜２上および外管１の
頂部内面には、平均粒径２０ミリミクロンのシリカとこ
れとほぼ同じ平均粒径のアルミナとを７６チ対２６多（
Ｍ量比）で混合した白色粉末が静電塗装方法により被着
されて拡散膜３が形成されている。外管１内には、ラン
プ軸上に発光管軸が一致するように、多結晶アルミナか
らなる内径５．２間の発光管４が設けられている。発光
管４は電極間距離が１１ｆｉになるように両端に電極を
有し、かつ内部にナトリウム２ｍｇ。In the figure, 1 is an outer tube made of glass with a diameter of 100 mm, and on the back side there is a reflective film 2 made of aluminum or the like.
or is formed. Further, on the reflective film 2 and on the inner surface of the top of the outer tube 1, silica with an average particle size of 20 mm and alumina with an average particle size of approximately the same size are coated with 76×26 poly(silica).
The diffusion film 3 is formed by applying white powder mixed with M amount ratio) by an electrostatic coating method. Inside the outer tube 1, an arc tube 4 made of polycrystalline alumina and having an inner diameter of 5.2 mm is provided so that the arc tube axis coincides with the lamp axis. The arc tube 4 has electrodes at both ends so that the distance between the electrodes is 11 fi, and contains 2 mg of sodium inside.
水銀６．５ｍａおよびキセノンガス３０００Ｐａが封入
されている。It is filled with 6.5 ma of mercury and 3000 Pa of xenon gas.
なお、図中、５，６は熱保舶Ｌ７は口金を示す。In addition, in the figure, 5 and 6 indicate a heat retainer L7 and a cap.
かかるランプを入力ｓｏＷで点灯すると、中心光度１２
００カンデラ、ビーム角３０度かえられた。When such a lamp is turned on with input soW, the central luminous intensity is 12
00 candela, the beam angle was changed by 30 degrees.
上記実施例と同仕様でアルミナ−シリカ混合粉末にかわ
り、ビロリン酸カルシウム（平均粒通約３μ）を使用し
た反射形高圧ナトリウムランプでは、同じ入力で、中心
光度１１６０カンデラ、ビーム角３２ｏと中心光度が低
く、ビーム角が広くなるという欠点がみられた。A reflective high-pressure sodium lamp with the same specifications as the above example but using calcium birophosphate (average grain diameter of approximately 3 μm) instead of the alumina-silica mixed powder has a central luminous intensity of 1160 candela and a beam angle of 32° with the same input. The disadvantage was that the beam angle was low and the beam angle was wide.
なお、本発明においてはシリカまたはアルミナを拡散膜
に使用しても、上記実検例と同様の効果が得られた。In addition, in the present invention, even when silica or alumina was used for the diffusion film, the same effect as in the above-mentioned actual test example was obtained.
発明の詳細
な説明し次ように、本発明によれば、従来のものに比べ
て、中心光度が高く、ビーム角が狭い反射形高圧ナトリ
ウムランプを提供することができるものである。DETAILED DESCRIPTION OF THE INVENTION As follows, according to the present invention, it is possible to provide a reflective high-pressure sodium lamp that has a higher central luminous intensity and a narrower beam angle than conventional lamps.
図は本発明の一実捲例である反射形高圧ナトリウムラン
プの一部切欠正面図である。
１・・・・・外管、２・・・・・・反射膜、３・・・・
・・拡散膜、４・・・・・・発光管、５，６・・・・・
・熱保護膜、７・・・・・・口金。The figure is a partially cutaway front view of a reflective high-pressure sodium lamp which is an example of the present invention. 1... Outer tube, 2... Reflective film, 3...
・・Diffusion film, 4・・Light tube, 5, 6・・・・
・Thermal protection film, 7...Base.
Claims (1)
、前記外管の頂部内面および前記反射膜上にアルミナお
よびシリカのうち少なくとも一種からなる拡散膜を形成
したことを特徴とする反射形高圧ナトリウムランプ。A reflective film is formed on the inner surface of the rear surface of the outer tube in which the arc tube is built, and a diffusion film made of at least one of alumina and silica is formed on the inner surface of the top of the outer tube and on the reflective film. Reflective high pressure sodium lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19103884A JPS6168852A (en) | 1984-09-12 | 1984-09-12 | Reflection-type high pressure sodium lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19103884A JPS6168852A (en) | 1984-09-12 | 1984-09-12 | Reflection-type high pressure sodium lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6168852A true JPS6168852A (en) | 1986-04-09 |
Family
ID=16267854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19103884A Pending JPS6168852A (en) | 1984-09-12 | 1984-09-12 | Reflection-type high pressure sodium lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6168852A (en) |
-
1984
- 1984-09-12 JP JP19103884A patent/JPS6168852A/en active Pending
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