JPH0836994A - Unsaturated vapor pressure type high pressure sodium lamp - Google Patents

Unsaturated vapor pressure type high pressure sodium lamp

Info

Publication number
JPH0836994A
JPH0836994A JP19363294A JP19363294A JPH0836994A JP H0836994 A JPH0836994 A JP H0836994A JP 19363294 A JP19363294 A JP 19363294A JP 19363294 A JP19363294 A JP 19363294A JP H0836994 A JPH0836994 A JP H0836994A
Authority
JP
Japan
Prior art keywords
component
lamp
glass solder
sodium
type high
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.)
Granted
Application number
JP19363294A
Other languages
Japanese (ja)
Other versions
JP3298319B2 (en
Inventor
Yasaburo Takeji
弥三郎 竹治
Yukifumi Taniguchi
谷口  晋史
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Japan Storage Battery Co Ltd
Original Assignee
Japan Storage Battery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Japan Storage Battery Co Ltd filed Critical Japan Storage Battery Co Ltd
Priority to JP19363294A priority Critical patent/JP3298319B2/en
Publication of JPH0836994A publication Critical patent/JPH0836994A/en
Application granted granted Critical
Publication of JP3298319B2 publication Critical patent/JP3298319B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To provide such an unsaturated vapor pressure type high pressure sodium lamp that almost completely prevents sodium from being consumed by reacting the sodium with a component member of a light emitting tube during lighting of a lamp and is superior in lamp life characteristics. CONSTITUTION:Glass solder 5 used for airtight sealing is composed of the first component consisting of a mixture of Al2O3, CaO, MgO, and Y2O3 and the second component consisting of at least one or more rare earth oxides selected from Sc2O3, La2O3, Sm2O3, Ce2O3, Yb2O3, and Dy2O3. The containing factor of the second component is 1-15wt.%.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はランプ点灯中に、発光管
内に封入した封入物のほぼ全量が蒸発する不飽和蒸気圧
形高圧ナトリウムランプの改良に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improvement of an unsaturated vapor pressure type high pressure sodium lamp in which almost all the amount of the filling material enclosed in the arc tube evaporates while the lamp is on.

【0002】[0002]

【従来の技術】一般に高圧ナトリウムランプは、透光性
アルミナ管の両端に電極を取りつけた金属製キャップを
ガラスソルダーで気密封着し、その内部にナトリウム、
水銀およびキセノンガスを封入した発光管とその発光管
を組み込んだ外管とから構成されている。
2. Description of the Related Art In general, a high-pressure sodium lamp is made by sealing a metal cap with electrodes attached to both ends of a translucent alumina tube with a glass solder and sealing the inside with sodium.
It is composed of an arc tube filled with mercury and xenon gas, and an outer tube incorporating the arc tube.

【0003】高圧ナトリウムランプのランプ特性は主に
ナトリウムと水銀の封入量と比率およびランプ点灯中に
余剰のナトリウムと水銀が溜まっている位置、すなわち
発光管の最冷部の温度によって決まる。そのためランプ
点灯中にナトリウムが発光管部材と反応してナトリウム
が消耗すると、ナトリウムと水銀の比率が変化し、その
結果ランプ特性、特にランプ電圧が上昇しランプが立ち
消える方向に変化する。
The lamp characteristics of a high-pressure sodium lamp are mainly determined by the amount and ratio of sodium and mercury enclosed and the position where excess sodium and mercury are accumulated during lamp operation, that is, the temperature of the coldest part of the arc tube. Therefore, when sodium reacts with the arc tube member during lamp operation and sodium is consumed, the ratio of sodium to mercury changes, and as a result, the lamp characteristics, especially the lamp voltage rises and the lamp turns off.

【0004】従来の高圧ナトリウムランプはこのような
ナトリウムの消耗を補償するためにランプ点灯時に蒸発
する量よりもはるかに過剰の量を封入したいわゆる飽和
蒸気圧形高圧ナトリウムランプであった。
The conventional high-pressure sodium lamp is a so-called saturated vapor pressure type high-pressure sodium lamp in which an amount far more than the amount evaporated at the time of lighting the lamp is filled to compensate for such consumption of sodium.

【0005】飽和蒸気圧形高圧ナトリウムランプは寿命
動程中にナトリウムが多少消耗してもランプ特性の変化
は小さいが、内外部からの熱的影響に対しては発光管の
最冷部温度が少し変わるとランプ特性が大幅に変わると
いう温度依存性の高いランプであった。これに対して点
灯状態で封入したナトリウムと水銀の全量が蒸発しつく
している場合には、それ以上蒸発すべき封入物がもはや
存在しないので、それ以上蒸気圧が上がることはなく、
最冷部温度が変化してもランプ特性はほとんど変化しな
いという優れた特性を有している。このようなランプは
不飽和蒸気圧形高圧ナトリウムランプとして知られてい
る。
The saturated vapor pressure type high pressure sodium lamp has a small change in the lamp characteristics even if sodium is consumed to some extent during the life span, but the temperature of the coldest part of the arc tube is not affected by thermal effects from inside and outside. It was a lamp with a high temperature dependence, in which the lamp characteristics changed drastically when changed a little. On the other hand, when the total amount of sodium and mercury sealed in the lit state has completely evaporated, there is no more inclusions to be evaporated, so the vapor pressure does not rise any further.
It has excellent characteristics that the lamp characteristics hardly change even if the temperature of the coldest part changes. Such lamps are known as unsaturated vapor pressure high pressure sodium lamps.

【0006】[0006]

【発明が解決しようとする課題】しかしながら不飽和蒸
気圧形高圧ナトリウムランプの発光管内にはナトリウム
がランプ点灯時に蒸発するだけの量しか封入されていな
いので、発光管の構成部材とナトリウムとが反応しナト
リウムの消耗が生じると、直ちにランプ特性の変化にな
って現れる。故に不飽和蒸気圧形高圧ナトリウムランプ
を実現するためにはナトリウムと発光管構成部材との反
応は完全に防止しなければならない。現在のところナト
リウムと発光管構成部材との反応を完全に防止すること
の困難さから、不飽和蒸気圧形高圧ナトリウムランプ
は、まだ一般的に実用化されるまでには至っていない。
However, since the arc tube of the unsaturated vapor pressure type high pressure sodium lamp is filled with an amount of sodium that is vaporized when the lamp is turned on, the constituent members of the arc tube and sodium react with each other. When sodium is consumed, the lamp characteristics are changed immediately. Therefore, in order to realize an unsaturated vapor pressure type high pressure sodium lamp, the reaction between sodium and arc tube components must be completely prevented. At present, unsaturated vapor pressure high-pressure sodium lamps have not yet been put to practical use because it is difficult to completely prevent the reaction between sodium and arc tube components.

【0007】本発明は以上の事実に鑑みなされたもの
で、その目的はランプ点灯中に発光管の構成部材とナト
リウムが反応して、ナトリウムが消耗するのをほぼ完全
に防止し、ランプ寿命特性の優れた不飽和蒸気圧形高圧
ナトリウムランプを提供することにある。
The present invention has been made in view of the above facts, and its purpose is to almost completely prevent sodium from being consumed by the reaction between the constituent members of the arc tube and sodium during lighting of the lamp. To provide an excellent unsaturated vapor pressure type high pressure sodium lamp.

【0008】[0008]

【課題を解決するための手段】前記目的を達成するため
に種種の実験を行い検討を加えた結果、本発明にかかる
不飽和蒸気圧形高圧ナトリウムランプは、透光性セラミ
ック管からなる発光管の両端開口部に、電極を取り付け
たニオブキャップがガラスソルダーにより気密封止さ
れ、該発光管内にキセノンガスおよびランプ点灯中にほ
ぼ全量が蒸発する量の水銀およびナトリウムが封入さ
れ、上記ガラスソルダーはAl2 3 、CaO、MgO
およびY2 3 の混合物よりなる第一の成分と、Sc2
3 、La23 、Sm2 3 、Ce2 3 、Yb2
3 、およびDy2 3 の内から選択された少なくとも1
つ以上の希土類酸化物からなる第二の成分とよりなり、
前記ガラスソルダー中に含まれる第二の成分の含有率が
1〜15重量%であることを特徴としている。
As a result of various experiments and studies conducted to achieve the above object, the unsaturated vapor pressure type high pressure sodium lamp according to the present invention has an arc tube made of a translucent ceramic tube. A niobium cap to which an electrode is attached is hermetically sealed by a glass solder in both end openings, and xenon gas and mercury and sodium in an amount that almost entirely evaporates during lamp lighting are enclosed in the arc tube. Al 2 O 3 , CaO, MgO
And a first component consisting of a mixture of Y 2 O 3 and Sc 2
O 3, La 2 O 3, Sm 2 O 3, Ce 2 O 3, Yb 2 O
3 and at least one selected from Dy 2 O 3
Consisting of a second component consisting of one or more rare earth oxides,
The content of the second component contained in the glass solder is 1 to 15% by weight.

【0009】[0009]

【作用】上記構成のガラスソルダーを用いることによ
り、ナトリウムとガラスソルダーとの反応が防止でき、
ナトリウムの消耗が生じないので、ランプ電圧低下のな
い優れた寿命特性を有する不飽和蒸気圧形高圧ナトリウ
ムランプが実現できる。
By using the glass solder having the above structure, the reaction between sodium and the glass solder can be prevented,
Since sodium is not consumed, it is possible to realize an unsaturated vapor pressure type high pressure sodium lamp having excellent life characteristics without a decrease in lamp voltage.

【0010】[0010]

【実施例】以下本発明の実施例について360Wを例と
して説明する。図1および図2は本発明に係る不飽和蒸
気圧形高圧ナトリウムランプの一実施例である。図1に
おいて1は内径8.0mm、全長118mmの透光性ア
ルミナ管であり、その両端開口部には厚み4.0mmの
アルミナセラミックディスク4が一体的に焼結固定され
ている。アルミナセラミックディスク4の中央開口部を
貫通して先端に電極2がチタニウムロウ3によって取り
付けられた外形3.0mm、厚み0.25mm、長さ1
5mmのNb−1%Zrよりなる耐熱金属製排気管6が
ガラスソルダー5によってろう付けされている。このよ
うに気密封着された透光性アルミナ発光管内には室温で
約3.3×104 Paのキセノンガスと約0.055m
gのナトリウムおよび約4.5mgの水銀とが封入され
ている。このように構成した発光管を外球(図示せず)
内に収納してランプは完成する。
EXAMPLES Examples of the present invention will be described below by taking 360 W as an example. 1 and 2 show an embodiment of an unsaturated vapor pressure type high pressure sodium lamp according to the present invention. In FIG. 1, reference numeral 1 denotes a translucent alumina tube having an inner diameter of 8.0 mm and a total length of 118 mm, and an alumina ceramic disk 4 having a thickness of 4.0 mm is integrally sintered and fixed to the openings at both ends thereof. The electrode 2 is attached to the tip of the alumina ceramic disk 4 by a titanium braze 3 through the central opening, and has an outer diameter of 3.0 mm, a thickness of 0.25 mm, and a length of 1.
A heat-resistant metal exhaust pipe 6 made of 5 mm of Nb-1% Zr is brazed by a glass solder 5. In such a hermetically sealed translucent alumina arc tube, xenon gas of about 3.3 × 10 4 Pa and about 0.055 m of room temperature are stored.
Encapsulated with g sodium and about 4.5 mg mercury. An arc tube having such a structure is provided with an outer bulb (not shown).
It is stored inside and the lamp is completed.

【0011】発明者らはガラスソルダーの組成を選定す
るに当たって下記に示す基礎実験を行った。ガラスソル
ダー5以外は同一条件とし、ガラスソルダー5のみ下記
NO.1〜4のように変えたランプを試作し、ランプ電
力360Wで点灯試験を行ったところ表1に示す結果が
得られた。なおガラスソルダーNO.1は従来の飽和蒸
気圧形高圧ナトリウムランプに一般的に使用されるもの
である。表1に於けるランプ電圧低下の値は初期に於け
るランプ電圧の値と所定の時間点灯した後のランプ電圧
との差で示している。いずれもサンプル数5灯の平均値
で示している。 (1)ガラスソルダーNO.1 Al2 3 46.0重量% CaO 42.0重量% MgO 5.0重量% Y2 3 3.0重量% SrO 4.0重量% (2)ガラスソルダーNO.2 Al2 3 46.0重量% CaO 42.0重量% MgO 5.0重量% Y2 3 3.0重量% SrO 3.0重量% Sc2 3 1.0重量% (3)ガラスソルダーNO.3 Al2 3 46.0重量% CaO 42.0重量% MgO 5.0重量% Y2 3 3.0重量% SrO 1.0重量% Sc2 3 3.0重量% (4)ガラスソルダーNO.4 Al2 3 46.0重量% CaO 42.0重量% MgO 5.0重量% Y2 3 3.0重量% Sc2 3 4.0重量%
The inventors conducted the following basic experiments in selecting the composition of the glass solder. The conditions other than the glass solder 5 are the same, and only the glass solder 5 has the following NO. When a lamp was produced by changing the lamps as described in 1 to 4 and a lighting test was performed with a lamp power of 360 W, the results shown in Table 1 were obtained. Glass solder NO. No. 1 is generally used in a conventional saturated vapor pressure type high pressure sodium lamp. The value of the lamp voltage drop in Table 1 is shown by the difference between the initial lamp voltage value and the lamp voltage after lighting for a predetermined time. In each case, the average value of 5 lamps is shown. (1) Glass solder NO. 1 Al 2 O 3 46.0 wt% CaO 42.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% SrO 4.0 wt% (2) Glass solder NO. 2 Al 2 O 3 46.0 wt% CaO 42.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% SrO 3.0 wt% Sc 2 O 3 1.0 wt% (3) Glass Solder NO. 3 Al 2 O 3 46.0 wt% CaO 42.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% SrO 1.0 wt% Sc 2 O 3 3.0 wt% (4) Glass Solder NO. 4 Al 2 O 3 46.0 wt% CaO 42.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% Sc 2 O 3 4.0 wt%

【0012】[0012]

【表1】 以上の結果から次のことが分かった。 1.SrOを含んだガラスソルダーはNaの消耗が大き
い。 2.SrOを含まず、代わりにSc2 3 を含んだガラ
スソルダーはナトリウムの消耗がない。
[Table 1] From the above results, the following was found. 1. The glass solder containing SrO consumes a large amount of Na. 2. The glass solder which does not contain SrO but instead contains Sc 2 O 3 does not consume sodium.

【0013】この試験結果より、ナトリウムとガラスソ
ルダーとの反応を防止するためにはSrOに代えてある
種の酸化物を添加するすればよいことが分かった。この
結果を基に種種の酸化物について同様の試験を行ったと
ころ、次の結果が得られた。 3.SrOの代わりに使用した時、ナトリウムの消耗が
大きい酸化物 Li2 O、BaO、Na2 Oであった。 4.SrOの代わりに使用した時、ナトリウムの消耗が
ない酸化物 La2 3 、Sm2 3 、Dy2 3 、Ce2 3 およ
びYb2 3 であった。
From the results of this test, it was found that in order to prevent the reaction between sodium and the glass solder, a certain kind of oxide may be added instead of SrO. When the same test was performed on various oxides based on this result, the following results were obtained. 3. Oxides Li 2 O, BaO, and Na 2 O, which consume large amounts of sodium when used in place of SrO. 4. The oxides were La 2 O 3 , Sm 2 O 3 , Dy 2 O 3 , Ce 2 O 3 and Yb 2 O 3 , which did not consume sodium when used in place of SrO.

【0014】次にガラスソルダーとして下記例1〜例8
のものを使用したランプを試作し、点灯試験を行ったと
ころいずれも点灯時間1,000時間当たりのランプ電
圧低下は1.0V以下であり優れた寿命特性を有してい
た。 [例1]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 100重量% よりなり、ガラスソルダー中の第二の成分の含有率が1
重量%であるガラスソルダー。 [例2]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 100重量% よりなり、ガラスソルダー中の第二の成分の含有率が6
重量%であるガラスソルダー。 [例3]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 100重量% よりなり、ガラスソルダー中の第二の成分の含有率が1
0重量%であるガラスソルダー。 [例4]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 100重量% よりなり、ガラスソルダー中の第二の成分の含有率が1
5重量%であるガラスソルダー。 [例5]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 50.0重量% Dy2 3 50.0重量% よりなり、ガラスソルダー中の第二の成分の含有率が9
重量%であるガラスソルダー。 [例6]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 33.3重量% Dy2 3 33.3重量% Ce2 3 33.3重量% よりなり、ガラスソルダー中の第二の成分の含有率が9
重量%であるガラスソルダー。 [例7]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 25.0重量% Dy2 3 25.0重量% Ce2 3 25.0重量% La2 3 25.0重量% よりなり、ガラスソルダー中の第二の成分の含有率が9
重量%であるガラスソルダー。 [例8]第一の成分が Al2 3 48.0重量% CaO 44.0重量% MgO 5.0重量% Y2 3 3.0重量% の混合物よりなり第二の成分が Sc2 3 20.0重量% Dy2 3 20.0重量% Ce2 3 20.0重量% La2 3 20.0重量% Sm2 3 20.0重量% よりなり、ガラスソルダー中の第二の成分の含有率が9
重量%であるガラスソルダー。
Next, as glass solders, the following examples 1 to 8 are given.
When a lamp using the above lamp was prototyped and a lighting test was conducted, the lamp voltage drop per 1,000 hours of lighting time was 1.0 V or less, and all had excellent life characteristics. Example 1 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 100% by weight, the content of the second component in the glass solder is 1
Glass solder that is weight percent. Example 2 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 100% by weight, and the content of the second component in the glass solder is 6
Glass solder that is weight percent. Example 3 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 100% by weight, the content of the second component in the glass solder is 1
0% by weight glass solder. [Example 4] The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 100% by weight, the content of the second component in the glass solder is 1
Glass solder which is 5% by weight. Example 5 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 50.0 wt% Dy 2 O 3 50.0 wt%, and the content of the second component in the glass solder is 9%.
Glass solder that is weight percent. Example 6 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 33.3% by weight Dy 2 O 3 33.3% by weight Ce 2 O 3 33.3% by weight, and the content of the second component in the glass solder is 9%.
Glass solder that is weight percent. Example 7 The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 25.0 wt% Dy 2 O 3 25.0 wt% Ce 2 O 3 25.0 wt% La 2 O 3 25.0 wt%, and the content of the second component in the glass solder is 9%.
Glass solder that is weight percent. [Example 8] The first component was a mixture of Al 2 O 3 48.0 wt% CaO 44.0 wt% MgO 5.0 wt% Y 2 O 3 3.0 wt% and the second component was Sc 2 O 3 20.0 wt% Dy 2 O 3 20.0 wt% Ce 2 O 3 20.0 wt% La 2 O 3 20.0 wt% Sm 2 O 3 20.0 wt% The content rate of the second component is 9
Glass solder that is weight percent.

【0015】なおガラスソルダーの備えるべき条件とし
て、融点が1450℃以下であることおよび熱膨張率が
アルミナ管のそれに近似していることが必要であるが、
第一の成分が Al2 3 40〜60重量% CaO 40〜60重量% MgO 0〜10重量% Y2 3 1〜 6重量% の範囲をはずれた場合およびガラスソルダー中に含まれ
る第二の成分の含有率が1〜15重量%をはずれた場合
にはガラスソルダーの融点が1,450℃を越えるかあ
るいは熱膨張率がアルミナ管のそれと近似しないため実
用上あまり望ましくない。
The glass solder must have a melting point of 1450 ° C. or lower and a coefficient of thermal expansion close to that of an alumina tube.
When the first component is out of the range of Al 2 O 3 40 to 60% by weight CaO 40 to 60% by weight MgO 0 to 10% by weight Y 2 O 3 1 to 6% by weight and the second component contained in the glass solder When the content of the component is out of the range of 1 to 15% by weight, the melting point of the glass solder exceeds 1,450 ° C. or the coefficient of thermal expansion is not close to that of the alumina tube, which is not practically desirable.

【0016】[0016]

【発明の効果】以上説明したように本発明は透光性セラ
ミック管からなる発光管の両端開口部に、電極を取り付
けたニオブキャップがガラスソルダーにより気密封止さ
れ、該発光管内にキセノンガスおよびランプ点灯中にほ
ぼ全量が蒸発する量の水銀およびナトリウムが封入され
た不飽和蒸気圧形高圧ナトリウムランプにおいて、上記
ガラスソルダーはAl2 3 、CaO、MgOおよびY
2 3 の混合物よりなる第一の成分と、Sc2 3 、L
2 3 、Sm2 3 、Ce2 3 、Yb2 3、およ
びDy2 3 の内から選択された少なくとも1つ以上の
希土類酸化物からなる第二の成分とよりなり、ガラスソ
ルダー中の第二の成分の含有率が1〜15重量%である
ことを特徴としているので、ナトリウムとガラスソルダ
ーとの反応が防止でき、ランプ点灯中にナトリウムが消
耗することがないので寿命特性の優れた不飽和蒸気圧形
高圧ナトリウムランプを提供することが出来る。
As described above, according to the present invention, a niobium cap having electrodes attached to the openings of both ends of a light-transmitting ceramic tube is hermetically sealed by a glass solder, and xenon gas and In an unsaturated vapor pressure type high pressure sodium lamp in which an amount of mercury and sodium which are almost entirely evaporated during lamp operation is filled, the glass solder is made of Al 2 O 3 , CaO, MgO and Y.
The first component consisting of a mixture of 2 O 3 and Sc 2 O 3 , L
a 2 O 3, Sm 2 O 3, Ce 2 O 3, Yb 2 O 3, and Dy 2 O more become a second component consisting of at least one rare earth oxide selected from among 3, glass Since the content of the second component in the solder is 1 to 15% by weight, the reaction between sodium and the glass solder can be prevented, and sodium is not consumed during the lighting of the lamp. It is possible to provide an excellent unsaturated vapor pressure type high pressure sodium lamp.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係る不飽和蒸気圧形高圧ナトリウムラ
ンプの発光管の一例を示した図。
FIG. 1 is a view showing an example of an arc tube of an unsaturated vapor pressure type high pressure sodium lamp according to the present invention.

【図2】図1の不飽和蒸気圧形高圧ナトリウムランプの
発光管の要部拡大断面図。
FIG. 2 is an enlarged cross-sectional view of a main part of an arc tube of the unsaturated vapor pressure type high pressure sodium lamp shown in FIG.

【符号の説明】[Explanation of symbols]

1 透光性アルミナセラミック管 2 電極 3 チタンロウ 4 端部ディスク 5 ガラスソルダー 6 ニオブキャップ 1 Translucent Alumina Ceramic Tube 2 Electrode 3 Titanium Wax 4 Edge Disk 5 Glass Solder 6 Niobium Cap

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】透光性セラミック管からなる発光管の両端
開口部に、電極を取り付けたニオブキャップがガラスソ
ルダーにより気密封止され、該発光管内にキセノンガス
およびランプ点灯中にほぼ全量が蒸発する量の水銀およ
びナトリウムが封入された不飽和蒸気圧形高圧ナトリウ
ムランプにおいて、 上記ガラスソルダーはAl2 3 、CaO、MgOおよ
びY2 3 の混合物よりなる第一の成分と、Sc
2 3 、La2 3 、Sm2 3 、Ce2 3 、Yb2
3 、およびDy2 3 の内から選択された少なくとも
1つ以上の希土類酸化物からなる第二の成分とよりな
り、 前記ガラスソルダー中に含まれる第二の成分の含有率が
1〜15重量%であることを特徴とする不飽和蒸気圧形
高圧ナトリウムランプ。
1. A niobium cap having electrodes attached to the openings of both ends of an arc tube made of a translucent ceramic tube is hermetically sealed by a glass solder, and almost all of the xenon gas in the arc tube and the entire amount is evaporated during lamp lighting. In an unsaturated vapor pressure type high pressure sodium lamp filled with an amount of mercury and sodium, the glass solder comprises a first component consisting of a mixture of Al 2 O 3 , CaO, MgO and Y 2 O 3 , and Sc.
2 O 3 , La 2 O 3 , Sm 2 O 3 , Ce 2 O 3 , Yb 2
O 3 and a second component composed of at least one rare earth oxide selected from Dy 2 O 3 , wherein the content of the second component contained in the glass solder is 1 to 15 An unsaturated vapor pressure type high pressure sodium lamp characterized by being in a weight percentage.
【請求項2】ガラスソルダーの第一の成分は、Al2
3 が40〜60重量%、CaOが40〜60重量%、Y
2 3 が1〜6重量%、MgOが0を越えて10重量%
以下の混合物であることを特徴とする請求項1記載の不
飽和蒸気圧形高圧ナトリウムランプ。
2. The first component of the glass solder is Al 2 O.
3 is 40 to 60% by weight, CaO is 40 to 60% by weight, Y
2 O 3 is 1 to 6 wt%, MgO exceeds 0 and is 10 wt%
The unsaturated vapor pressure type high pressure sodium lamp according to claim 1, which is a mixture of:
JP19363294A 1994-07-25 1994-07-25 Unsaturated vapor pressure type high pressure sodium lamp Expired - Fee Related JP3298319B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP19363294A JP3298319B2 (en) 1994-07-25 1994-07-25 Unsaturated vapor pressure type high pressure sodium lamp

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP19363294A JP3298319B2 (en) 1994-07-25 1994-07-25 Unsaturated vapor pressure type high pressure sodium lamp

Publications (2)

Publication Number Publication Date
JPH0836994A true JPH0836994A (en) 1996-02-06
JP3298319B2 JP3298319B2 (en) 2002-07-02

Family

ID=16311177

Family Applications (1)

Application Number Title Priority Date Filing Date
JP19363294A Expired - Fee Related JP3298319B2 (en) 1994-07-25 1994-07-25 Unsaturated vapor pressure type high pressure sodium lamp

Country Status (1)

Country Link
JP (1) JP3298319B2 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271614A1 (en) * 2001-06-27 2003-01-02 Matsushita Electric Industrial Co., Ltd. Metal Halide Lamp
US6707252B2 (en) 2001-06-29 2004-03-16 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6756721B2 (en) 2001-06-28 2004-06-29 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
DE102016115523A1 (en) * 2016-08-22 2018-02-22 Osram Gmbh Gas discharge lamp and headlamp system with gas discharge lamp

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1271614A1 (en) * 2001-06-27 2003-01-02 Matsushita Electric Industrial Co., Ltd. Metal Halide Lamp
US7061182B2 (en) 2001-06-27 2006-06-13 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6756721B2 (en) 2001-06-28 2004-06-29 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
US6707252B2 (en) 2001-06-29 2004-03-16 Matsushita Electric Industrial Co., Ltd. Metal halide lamp
DE102016115523A1 (en) * 2016-08-22 2018-02-22 Osram Gmbh Gas discharge lamp and headlamp system with gas discharge lamp
US10366874B2 (en) 2016-08-22 2019-07-30 Osram Gmbh Gas discharge lamp and spotlight system comprising gas discharge lamp

Also Published As

Publication number Publication date
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