JPH0690916B2 - Metal vapor discharge lamp - Google Patents
Metal vapor discharge lampInfo
- Publication number
- JPH0690916B2 JPH0690916B2 JP60251858A JP25185885A JPH0690916B2 JP H0690916 B2 JPH0690916 B2 JP H0690916B2 JP 60251858 A JP60251858 A JP 60251858A JP 25185885 A JP25185885 A JP 25185885A JP H0690916 B2 JPH0690916 B2 JP H0690916B2
- Authority
- JP
- Japan
- Prior art keywords
- arc tube
- discharge lamp
- metal vapor
- vapor discharge
- tube
- 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 - Lifetime
Links
Landscapes
- Discharge Lamps And Accessories Thereof (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
【発明の詳細な説明】 〔発明の技術分野〕 本発明はセラミツクス製発光管を具備した金属蒸気放電
灯に係り，特に点灯電圧の安定性や長寿命化を図つた金
属蒸気放電灯に関する。Description: TECHNICAL FIELD OF THE INVENTION The present invention relates to a metal vapor discharge lamp equipped with a ceramics arc tube, and more particularly to a metal vapor discharge lamp having a stable lighting voltage and a long life.
金属蒸気放電灯，例えば高圧ナトリウムランプにおいて
は口金を備えた外管内に，前記口金と反対側に所謂る最
冷部が位置するようにセラミツクス製発光管を内装させ
た構成を一般に採つている。即ちこの種ランプは通常口
金側を上方として使用されるため，口金と反対側にその
発光管内に封入された過剰なアマルガムを溜めるように
した方が安定に溜め易くまた振動などの影響を受け難い
と考えられるからである。かくして金属蒸気放電灯にお
いては，口金と反対側に発光管の最冷部が位置するよう
外管内に封装した構成を採つているが次のような不都合
さがみられる。即ち外管内に封装された発光管は第２図
に概略的に示すように，セラミツクス製の発光管（１）
に封有した電極（２），（２′）のうち少なくとも一方
は最冷部を兼ねる電極給電体（３）…例えばNb管…にて
支持されている。しかして前記電極給電体（３）は給電
体を兼ねる支持枠（４）に接続固定した発光管ホルダー
（５）にて支持された構成を成している。このように発
光管を外管内に封装した放電灯について実用してみると
上記設定した最冷部に必ずしもアマルガムが溜らず，例
えば発光管の管端封着部に溜つたりして点灯電圧ＶＬの
上昇を招いたり，上記管端封着部に溜つたアマルガムが
封着ソルダーと反応して黒化を起生するなど安定性（長
寿命化）が損われると云う問題があつた。In a metal vapor discharge lamp, for example, a high-pressure sodium lamp, a ceramic arc tube is generally installed in an outer tube provided with a base so that a so-called coldest portion is located on the side opposite to the base. That is, since this type of lamp is usually used with the base side facing upward, it is easier to store excess amalgam enclosed in the arc tube on the side opposite to the base, because it is easier to store it stably and is less susceptible to the effects of vibrations and the like. Because it is considered. Thus, in the metal vapor discharge lamp, the outer tube is sealed so that the coldest part of the arc tube is located on the side opposite to the base, but the following disadvantages are observed. That is, the arc tube enclosed in the outer tube is a ceramic arc tube (1), as shown schematically in FIG.
At least one of the electrodes (2) and (2 ') sealed in the inside is supported by an electrode power feeding body (3) which also serves as the coldest portion ... For example, Nb tube. Therefore, the electrode power feeder (3) is supported by the arc tube holder (5) connected and fixed to the support frame (4) which also serves as the power feeder. When a discharge lamp in which the arc tube is sealed in the outer tube is practically used, the amalgam does not always accumulate in the coldest portion set above, and for example, the amalgam accumulates in the tube end sealing portion of the arc tube and the lighting voltage V There is a problem that stability (longevity) is impaired, such as an increase in L , and amalgam accumulated in the above-mentioned tube end sealing portion reacts with the sealing solder to cause blackening.
本発明者らはかかる事情に対処して検討を進めた結果，
上記，金属蒸気放電灯の構成において，外管内に発光管
を支持する支持枠と発光管との距離が上記安定性に大き
く影響することを確認した。The inventors of the present invention have dealt with such a situation and have proceeded with the investigation,
It was confirmed that in the above-mentioned configuration of the metal vapor discharge lamp, the distance between the supporting frame for supporting the arc tube inside the outer tube and the arc tube greatly affects the stability.
本発明は最冷部を兼ねる電極給電体を具備したセラミツ
クス製発光管を外管内に封装し，且給電体を兼ねる支持
枠と，前記電極給電体とを発光管ホルダーにて接続固定
した構成の金属蒸気放電灯の封入した過剰アマルガムに
よる障害を除去し，換言すれば最冷部温度を維持しもつ
てランプ特性の安定化を図つた金属蒸気放電灯を提供す
ることを目的とするものである。The present invention has a structure in which a ceramic arc tube equipped with an electrode power feeder that also functions as the coldest part is sealed in an outer tube, and a supporting frame that also functions as a power source and the electrode power feeder are connected and fixed by an arc tube holder. It is an object of the present invention to provide a metal vapor discharge lamp which eliminates the obstacle caused by the excess amalgam enclosed in the metal vapor discharge lamp, in other words, maintains the coldest part temperature and stabilizes the lamp characteristics. .
本発明は金属蒸気放電灯の特性安定化を目的としたもの
で，発光管ホルダーを介して発光管の最冷部に接続し，
発光管の支持固定に関与する給電体を兼ねる支持枠と発
光管中央部の外表面との間隔（Ｌ）を発光管の入力
（Ｗ）との関係で所定の距離に設定したことをもつて特
徴付けられる。The present invention is intended to stabilize the characteristics of a metal vapor discharge lamp, and is connected to the coldest part of the arc tube via an arc tube holder.
Since the distance (L) between the outer surface of the central portion of the arc tube and the supporting frame that also serves as a power supply member for supporting and fixing the arc tube is set to a predetermined distance in relation to the input (W) of the arc tube. Characterized
即ち本発明は最冷部を兼ねる電極給電体を有するセラミ
ツクス製発光管を，給電体を兼ねる支持枠にて少なくと
も上記最冷部を兼ねる電極給電体が接続によつて支持さ
れて外管部に封装して成る金属蒸気放電灯において， 前記発光管中央部における外表面と前記支持枠表面との
対向する距離をLmmとし，ランプ電力をＷＬとしたと
き， ＷＬ200Wの場合Ｌ11mm 200WＬ500Wの場合Ｌ13mm 500W＜ＷＬ1000Wの場合Ｌ15mm に設定して成ることを特徴とするる金属蒸気放電灯であ
る。That is, the present invention relates to a ceramic arc tube having an electrode power supply body also serving as the coldest part, and at least an electrode power supply body also serving as the coldest part is supported by a connection by a support frame also serving as a power supply body to the outer tube part. in the metal vapor discharge lamp made by FuSo, and Lmm distance opposite the outer surface and the support frame surface in the arc tube center portion, when the lamp power was W L, W L 200 W in the case L11mm 200W L 500W In the case of L13 mm 500 W <W L 1000 W, the metal vapor discharge lamp is set to L15 mm.
以下本発明に係る金属蒸気放電灯の一構成例を示す第１
図を参照して本発明を説明する。図において（６）は外
管で一端側には内導線（７），（８）を封装したステム
（９）が封着され，更に上記内導線（７），（８）と接
続するる口金（10）が装着されている。また（１）は前
記外管（６）内に封装された発光管であり，例えば透光
性アルミナ管よりなりその両端はガラスソルダーにてア
ルミナよりなるエンドキヤップ（11），（11′）にて封
着されている。さらに発光管（１）内には始動用希ガ
ス，ナトリウム−水銀など封入されるとともに一対の放
電用電極（２），（２′）が封入されている。しかして
放電電極（２），（２′）は前記エンドキヤツプ（1
1），（11′）を挿通し気密に封止された電極給電体例
えばニオブ管（３），及びNb線（３′）にて支持されて
いる。また（４）は給電体を兼ねる支持枠で一方の導入
線（７）と電気的に接続し，さらに発光管（１）の最冷
部を兼ねる電極給電体（３）と発光管ホルダー（５）を
介して接続している。なお，発光管ホルダー（５）と電
極給電体（３）は径0.9のNb線（17）により溶接接続さ
れている。発光管（１）の一端側は上記ホルダー（５）
にて支持され，他端側は前記給電体兼用の支持枠（４）
に電気的に絶縁して取り付けた他の発光管ホルダー
（５′）により他方の電極給電線（３′）を絶縁管（1
6）を介して挾持して支持されており，この他方の電極
給電線（３′）は前記他方の導入線（８）と接続する一
方前記他の発光管ホルダー（５′）とは絶縁線（16）に
より電気的に絶縁する構成を採つている。Hereinafter, a first example of the configuration of the metal vapor discharge lamp according to the present invention will be described.
The present invention will be described with reference to the drawings. In the figure, (6) is an outer tube, and a stem (9) enclosing the inner conductors (7), (8) is sealed at one end side, and is further connected to the inner conductors (7), (8). (10) is installed. Reference numeral (1) is an arc tube enclosed in the outer tube (6), and is made of, for example, a translucent alumina tube, and both ends thereof are made of glass solder into end caps (11) and (11 ') made of alumina. It has been sealed. Further, a rare gas for starting, sodium-mercury, etc. are enclosed in the arc tube (1) and a pair of discharge electrodes (2), (2 ') are enclosed. Therefore, the discharge electrodes (2) and (2 ') are connected to the end cap (1).
1) and (11 ') are inserted to be hermetically sealed and supported by an electrode feeder such as a niobium tube (3) and an Nb wire (3'). Further, (4) is a support frame that also serves as a power supply body, and is electrically connected to one of the lead wires (7). Further, the electrode power supply body (3) also serves as the coldest part of the arc tube (1) and the arc tube holder (5). ) Is connected through. The arc tube holder (5) and the electrode feeder (3) are connected by welding with a Nb wire (17) having a diameter of 0.9. One end side of the arc tube (1) is the holder (5)
And the other end is a supporting frame (4) which is also used as the power feeding body.
Another arc tube holder (5 ') electrically insulated from the other electrode feed line (3') to the insulation tube (1 ')
6) is supported by being sandwiched between the other electrode feeding line (3 ') and the other introducing line (8) while being insulated from the other arc tube holder (5'). By (16), it is electrically insulated.
尚図において（12）は所謂る近接導体であり，また（1
3）はバイメタルスイツチ（14）とこのバイメタルスイ
ツチ（14）近傍にあつてバイメタルスイツチ（14）を加
熱するヒーター（15）とを直列に接続して成る始動回路
で，一端は一方の内導線（７′）に，他端は給電体兼用
の支持枠（４）にそれぞれ接続している。In the figure, (12) is a so-called proximity conductor, and (1
3) is a starting circuit composed of a bimetal switch (14) and a heater (15) for heating the bimetal switch (14) located in the vicinity of the bimetal switch (14) connected in series. 7 ') and the other end is connected to a support frame (4) which also serves as a power supply.
本発明に係る金属蒸気放電灯はこのような構成即ち発光
管（１）がセラミツクス製で，所謂る最冷部が少なくと
も一方の電極給電体（３）にて兼用され，且つこの最冷
部兼用の電極給電体（３）が給電体兼用の支持枠（４）
に発光管ホルダー（５）を介して接続されるとともに支
持固定される構造を基本とする金属蒸気放電灯におい
て，発光管（１）の中央部表面と前記支持枠（４）との
最短距離Ｌ（mm）をランプ電力ＷＬとの関係にて， ＷＬ200Wの場合 Ｌ11mm 200W＜500Wの場合 Ｌ13mm 500W＜ＷＬ1000Wの場合 Ｌ15mm にそれぞれ選定設定することにある。The metal vapor discharge lamp according to the present invention has such a structure, that is, the arc tube (1) is made of ceramics, the so-called coldest part is also used as at least one of the electrode feeders (3), and the coldest part is also used. The electrode feed body (3) is a support frame (4) that also serves as a feed body
In a metal vapor discharge lamp based on a structure which is connected to and supported by an arc tube holder (5) and is fixed, a shortest distance L between the central surface of the arc tube (1) and the support frame (4). (Mm) is to be selected and set in relation to the lamp power W L , for W L 200 W, L 11 mm 200 W <500 W, L 13 mm 500 W <W L 1000 W, L 15 mm.
しかして本発明において，上記発光管のランプ電力ＷＬ
との関係で発光管と支持枠との間隔Ｌ（mm）とを上記の
如く選択，設定したのは次の理由による。即ち直径8.7m
m,長さ90mmのアルミナ製発光管（180W形），直径8.7mm,
長さ140mmのアルミナ製発光管（450W形），直径14mm,長
さ190mmのアルミナ製発光管（940W形）をそれぞれ用
い，発光管と支持枠との最短距離Ｌ（mm）を７〜17mmに
変えて常套手段により第１図示構成のナトリウム蒸気放
電灯を各10箇づつ構成し，これらを100時間点灯し最冷
兼用の電極給電体（３）以外の部分（発光管内）にアマ
ルガムが溜つたりして，ランプ電圧の上昇乃至黒化の発
生が認められたランプの数をそれぞれ調査したところ次
表に示す如くで，上記範囲を外れると所望の安定性を有
する長寿命なものを得られないことが実験的に確認され
たからである。Therefore, in the present invention, the lamp power W L of the arc tube is
The distance L (mm) between the arc tube and the support frame is selected and set as described above because of the following reason. That is, diameter 8.7m
m, 90mm long alumina arc tube (180W type), diameter 8.7mm,
Alumina arc tube with a length of 140 mm (450 W type) and alumina arc tube with a diameter of 14 mm and length of 190 mm (940 W type) are used respectively, and the shortest distance L (mm) between the arc tube and the support frame is 7 to 17 mm. Alternately, 10 conventional sodium vapor discharge lamps each having the structure shown in the first figure are constructed by conventional means, these are lit for 100 hours, and amalgam accumulates in the portion (in the arc tube) other than the electrode power supply body (3) that also serves as the coldest As a result of examining the number of lamps in which rise of lamp voltage or occurrence of blackening was observed, as shown in the following table, if the value is out of the above range, a long-life lamp having desired stability can be obtained. This is because it was confirmed experimentally that there is no such a case.
なお，上記においてはエンドキヤツプ（11），（11′）
がアルミナ製の場合を例示したが，例えばニオブなどの
金属製の場合，或いは高圧ナトリウムに限らず所謂るメ
タルハライドランプなどの場合にも同様の作用効果が得
られる。 In the above, the end caps (11), (11 ')
However, the same effect can be obtained in the case of a metal such as niobium or a so-called metal halide lamp other than high-pressure sodium.
上記実施例からも明らかなように，少なくとも一方の電
極給電体が所謂る最冷部を兼用する構成のセラミツクス
製発光管を具備し，且つ最冷部兼用の電極給電体が，給
電体兼用の支持枠に発光管ホルダーを介して接続された
金属蒸気放電灯において，発光管中央部表面と，給電体
兼用支持枠との最短矩離Ｌをランプ電力ＷＬに応じ所定
の値に常に選択設定することを要旨とする本発明によれ
ば点灯寿命時間中，点灯電圧の上昇やソルダーと水銀と
の反応に起因する黒化発生など全面的に除去される。即
ち本発明に係る金属蒸気放電灯においては発光管内に封
入されている過剰分の水銀も常に所定の最冷部（電極給
電体）に凝縮し溜つた状態を維持する。このため放電灯
自体の耐振性が向上するうえ点灯時において所定の水銀
蒸気圧を常に呈し易いとともに，一方では管端封止部の
ソルダーに接することもなくなる。かくして点灯電圧の
上昇も抑制されるし，また黒化発光も防止され安定した
ランプ特性を維持，発揮する。As is clear from the above-mentioned embodiment, at least one of the electrode power feeders is provided with a ceramics arc tube having a structure that also serves as a so-called coldest portion, and the electrode power feeder that also serves as the coldest portion serves as the power feeder. in the metal vapor discharge lamp connected through the light-emitting tube holder to the support frame, always selected set to a predetermined value corresponding arc tube central surface, the shortest NoriHanare L between the feeding member alternate supporting frame in lamp power W L According to the present invention, which is summarized in the above, during the lighting lifetime, the blackening caused by the increase of the lighting voltage and the reaction between the solder and mercury is completely removed. That is, in the metal vapor discharge lamp according to the present invention, the excess amount of mercury enclosed in the arc tube is always condensed and maintained in the predetermined coldest part (electrode feeder). For this reason, the vibration resistance of the discharge lamp itself is improved, and at the time of lighting, it is easy to always exhibit a predetermined mercury vapor pressure, and on the other hand, it does not come into contact with the solder at the tube end sealing portion. Thus, the rise of the lighting voltage is suppressed, and the blackened light emission is also prevented, so that stable lamp characteristics are maintained and exhibited.
ところで上記本発明に係る金属蒸気放電灯が安定したラ
ンプ特性を維持，発揮するのは次のように考えられる。
即ち本発明においては発光管と給電体を兼ねる支持枠と
の間隔（距離）を通常の場合（入力ＷＬに関係なく５〜
10mm）より多く離間させている。このため発光管からの
熱による給電体兼用支持枠の温度上昇も抑制される。か
くして支持枠−発光管ホルダー電極給電体を兼ねる最冷
部への伝熱も低減され，所謂る最冷部としての機械を十
分に果すに至つたものと考えられる。By the way, it is considered that the metal vapor discharge lamp according to the present invention maintains and exhibits stable lamp characteristics as follows.
5 Regardless i.e. in the present invention the interval between the support frame also serves as a power feeding member and the arc tube (distance) in the case of normal (input W L
10 mm) apart. Therefore, the temperature rise of the support frame that also serves as the power supply due to the heat from the arc tube is suppressed. Thus, it is considered that the heat transfer to the coldest part, which also functions as the support frame-arc tube holder electrode power feeder, is reduced, and the machine as a so-called coldest part is sufficiently fulfilled.
第１図は本発明に係る金属蒸気放電灯の構成例を示す透
視図，第２図は発光管を給電体兼用支持枠に支持固定す
る構成例の説明図である。 （１）……発光管，（２），（２′）……放電電極， （３）……最冷部兼用の電極給電体， （４）……給電体兼用支持体， （５）……発光管ホルダー，（６）……外管FIG. 1 is a perspective view showing a structural example of a metal vapor discharge lamp according to the present invention, and FIG. 2 is an explanatory view of a structural example in which an arc tube is supported and fixed to a support frame that also serves as a power supply body. (1) ... Arc tube, (2), (2 ') ... Discharge electrode, (3) ... Electrode power supply that also serves as the coldest part, (4) ... Support for power supply and (5) ... … Aluminum tube holder, (6) …… Outer tube
Claims (1)
ツクス製発光管を，給電体を兼ねる支持枠にて少なくと
も上記最冷部を兼ねる給電体が発光管ホルダーを介して
接続固定によつて支持されて外管に封装して成る金属蒸
気放電灯において， 前記発光管中央部における表面と前記支持枠表面との対
向距離をLmmとし，ランプ電力をＷＬとしたとき， ＷＬ200Wの場合Ｌ11mm 200W＜ＷＬ500Wの場合Ｌ13mm 500W＜ＷＬ1000Wの場合Ｌ15mm に設定して成ることを特徴とする金属蒸気放電灯。1. A ceramic arc tube having an electrode power feeder that also functions as a coldest part, and a fixing frame that also functions as a power source is connected and fixed to at least the power source that also functions as the coldest part via an arc tube holder. In the case of a metal vapor discharge lamp that is supported and sealed in an outer tube, when the facing distance between the surface at the central part of the arc tube and the surface of the supporting frame is L mm and the lamp power is W L , then W L 200 W L11mm 200W <W L 500W L13mm 500W <W L 1000W L15mm Metal vapor discharge lamp
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60251858A JPH0690916B2 (en) | 1985-11-12 | 1985-11-12 | Metal vapor discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60251858A JPH0690916B2 (en) | 1985-11-12 | 1985-11-12 | Metal vapor discharge lamp |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62113354A JPS62113354A (en) | 1987-05-25 |
| JPH0690916B2 true JPH0690916B2 (en) | 1994-11-14 |
Family
ID=17228966
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60251858A Expired - Lifetime JPH0690916B2 (en) | 1985-11-12 | 1985-11-12 | Metal vapor discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0690916B2 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4997473A (en) * | 1973-01-25 | 1974-09-14 | ||
| JPS52142878A (en) * | 1976-05-21 | 1977-11-29 | Hitachi Ltd | Metal vapor discharge lamp |
| JPS548996U (en) * | 1977-06-21 | 1979-01-20 | ||
| JPS6086752A (en) * | 1983-10-18 | 1985-05-16 | Toshiba Corp | High pressure sodium lamp |
-
1985
- 1985-11-12 JP JP60251858A patent/JPH0690916B2/en not_active Expired - Lifetime
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4997473A (en) * | 1973-01-25 | 1974-09-14 | ||
| JPS52142878A (en) * | 1976-05-21 | 1977-11-29 | Hitachi Ltd | Metal vapor discharge lamp |
| JPS548996U (en) * | 1977-06-21 | 1979-01-20 | ||
| JPS6086752A (en) * | 1983-10-18 | 1985-05-16 | Toshiba Corp | High pressure sodium lamp |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62113354A (en) | 1987-05-25 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |