JPH04141942A - Ceramic discharge lamp - Google Patents
Ceramic discharge lampInfo
- Publication number
- JPH04141942A JPH04141942A JP26153790A JP26153790A JPH04141942A JP H04141942 A JPH04141942 A JP H04141942A JP 26153790 A JP26153790 A JP 26153790A JP 26153790 A JP26153790 A JP 26153790A JP H04141942 A JPH04141942 A JP H04141942A
- Authority
- JP
- Japan
- Prior art keywords
- tube
- outer tube
- arc tube
- straight
- metal
- 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
- 239000000919 ceramic Substances 0.000 title claims description 15
- 229910052751 metal Inorganic materials 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 18
- 239000007858 starting material Substances 0.000 claims description 3
- 229910052756 noble gas Inorganic materials 0.000 abstract 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 9
- 229910052708 sodium Inorganic materials 0.000 description 9
- 239000011734 sodium Substances 0.000 description 9
- 238000007789 sealing Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 229910052758 niobium Inorganic materials 0.000 description 4
- 239000010955 niobium Substances 0.000 description 4
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910052724 xenon Inorganic materials 0.000 description 2
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 229910052743 krypton Inorganic materials 0.000 description 1
- DNNSSWSSYDEUBZ-UHFFFAOYSA-N krypton atom Chemical compound [Kr] DNNSSWSSYDEUBZ-UHFFFAOYSA-N 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- MJGFBOZCAJSGQW-UHFFFAOYSA-N mercury sodium Chemical compound [Na].[Hg] MJGFBOZCAJSGQW-UHFFFAOYSA-N 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910001023 sodium amalgam Inorganic materials 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は湾曲部を有する高圧ナトリウムランプなどのセ
ラミック放電灯に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a ceramic discharge lamp, such as a high-pressure sodium lamp, having a curved portion.
（従来の技術）
例えば高圧ナトリウムランプは、透光性アルミナチュー
ブよりなる発光管の両端に電極を気密に封着し、この発
光管内に発光物質としてナトリウム、緩衝用金属として
水銀、および始動用希ガスを封入して構成しである。(Prior Art) For example, in a high-pressure sodium lamp, electrodes are hermetically sealed at both ends of an arc tube made of a translucent alumina tube, and inside the arc tube are sodium as a luminescent material, mercury as a buffer metal, and diluted starting material. It is constructed by sealing gas.
透光性アルミナチューブは耐熱性に優れ、かつナトリウ
ムに対する耐蝕性に優れているので、この種の高圧ナト
リウムランプの発光管に好適である。A translucent alumina tube has excellent heat resistance and corrosion resistance against sodium, and is therefore suitable for the arc tube of this type of high-pressure sodium lamp.
シカシながら透光性アルミナチューブは通常のガラスと
異なり高温下においても軟化し難いので従来、押し出し
成形により成形された直線状のチューブをそのままバル
ブとして使用しており、したがって発光管は直管形をな
している。However, unlike ordinary glass, translucent alumina tubes do not easily soften even at high temperatures, so conventionally, straight tubes formed by extrusion molding are used as bulbs. I am doing it.
ところで、最近高圧金属蒸気放電灯が屋内照明の光源に
採用される傾向にあり、このためランプの小形化が要求
されている。By the way, there is a recent tendency for high-pressure metal vapor discharge lamps to be used as light sources for indoor lighting, and therefore there is a demand for miniaturization of the lamps.
上記高圧ナトリウムランプを小形化する上では、発光管
サイズの縮小が重要な課題となり、その対策の１つとし
て、バルブの途中をＵ字またはコ字形等の屈曲形状を有
する湾曲形にすることが考えられる。Reducing the size of the arc tube is an important issue in downsizing the high-pressure sodium lamps mentioned above, and one of the countermeasures is to make the bulb curved in the middle, such as in a U-shape or a U-shape. Conceivable.
発光管を湾曲形に形成すると、従来と同等の電極間距離
を保っても、スペースの小形化が可能になり、外管を小
形にすることができる。When the arc tube is formed into a curved shape, the space can be made smaller even if the distance between the electrodes is kept the same as in the conventional case, and the outer tube can be made smaller.
（発明が解決しようとする課題）
ところで、発光管を外管内に収容する場合、通常、発光
管の一対の電気導入線を発光管の支持部材と兼用する方
法が採用されているが、上記のように例えばＵ字形状等
の湾曲部を有した発光管の場合には、これら一対の電気
導入線が略同一方向に位置することになり、発光管を確
実に固定支持することが困難になる。(Problem to be Solved by the Invention) By the way, when an arc tube is housed in an outer envelope, a method is usually adopted in which a pair of electrical lead-in wires of the arc tube are also used as supporting members for the arc tube. For example, in the case of an arc tube with a curved part such as a U-shape, the pair of electrical lead-in wires will be located in approximately the same direction, making it difficult to securely support the arc tube. .
つまり、従来のような直管形状の発光管の場合には、一
対の電気導入線が略反対方向に導出されるため、その電
気導入線をマウント等の金属支持枠に固定すれば、発光
管が金属支持枠に懸架された状態になり、発光管を外管
内に確実に固定支持できるが、上記の通り、湾曲形状の
発光管の場合は、一対の電気導入線が略同一方向に延在
するため、この電気導入線を利用して発光管を支持した
場合には、所謂片側支持状態となって、発光管を確実に
固定支持できないという問題がある。In other words, in the case of a conventional straight arc tube, a pair of electrical lead-in wires are led out in substantially opposite directions, so if the electrical lead-in wires are fixed to a metal support frame such as a mount, the arc tube is suspended on the metal support frame, and the arc tube can be securely fixed and supported within the outer bulb. However, as mentioned above, in the case of a curved arc tube, the pair of electrical lead-in wires extend in approximately the same direction. Therefore, when the arc tube is supported using this electrical lead-in wire, there is a problem that the arc tube cannot be securely supported in a so-called one-sided supported state.
本発明はこのような事情に基づきなされたもので、湾曲
部が形成された発光管を外管内に確実に固定支持して収
容できるセラミック放電灯を提供しようとするものであ
る。The present invention has been made based on the above-mentioned circumstances, and an object thereof is to provide a ceramic discharge lamp in which an arc tube having a curved portion can be reliably fixedly supported and accommodated in an outer bulb.
［発明の構成］
（課題を解決するための手段）
上記課題を解決するために第１の本発明のセラミック放
電灯は、直管部と、この直管部に連続して湾曲部が形成
された透光性セラミックチューブよりなる気密容器内の
両端部に電極が封装され、発光金属、緩衝用金属および
始動用希ガスが封入された発光管と、この発光管を収容
する外管と、発光管の直管部を外管に係止する支持部材
を備えたことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the ceramic discharge lamp of the first invention includes a straight tube portion and a curved portion continuous to the straight tube portion. An arc tube, which has electrodes sealed at both ends in an airtight container made of a translucent ceramic tube and is filled with a luminescent metal, a buffer metal, and a starting rare gas; The present invention is characterized in that it includes a support member that locks the straight portion of the tube to the outer tube.
また、第２の本発明のセラミック放電灯は、直管部と、
この直管部に連続して湾曲部が形成された透光性セラミ
ックチューブよりなる気密容器内の両端部に電極が封装
され、発光金属、緩衝用金属および始動用希ガスが封入
された発光管と、この発光管を収容する外管とを備えた
セラミック放電灯であって、外管内面には凹部が形成さ
れていると共に、この凹部に係止された支持部材によっ
て発光管の直管部が支持されていることを特徴とするも
のである。Further, the ceramic discharge lamp of the second aspect of the present invention includes a straight tube portion;
A luminous tube in which electrodes are sealed at both ends in an airtight container made of a translucent ceramic tube in which a curved part is formed continuously in the straight pipe part, and a luminescent metal, a buffer metal, and a starting rare gas are sealed. and an outer bulb that accommodates the arc tube, the inner surface of the outer bulb is formed with a recess, and a support member that is engaged with the recess allows the straight section of the arc tube to be It is characterized by the fact that it is supported.
（作用）
本発明においては、発光管の直管部を外管に係止する支
持部材を備えているため、発光管を外管内に確実に固定
支持して収容できる。(Function) In the present invention, since the support member for locking the straight tube portion of the arc tube to the outer tube is provided, the arc tube can be reliably fixedly supported and accommodated within the outer tube.
（実施例） 本発明の一実施例を図面を参照して詳細に説明する。(Example) An embodiment of the present invention will be described in detail with reference to the drawings.
図面に本発明に係る高圧ナトリウムランプを示すように
、発光管１は内径が約７．２５ａｍ、平均外径が約８．
７５ｍｍの透光性アルミナチューブよりなり図示の如く
直管部１ａと、この直管部１ａに連続して湾曲部１ｂが
形成された例えばＵ字を呈する形状に成形されている。As shown in the drawings of the high-pressure sodium lamp according to the present invention, the arc tube 1 has an inner diameter of about 7.25 am and an average outer diameter of about 8.25 am.
It is made of a 75 mm translucent alumina tube and is formed into a U-shaped shape, for example, with a straight tube section 1a and a curved section 1b continuous to the straight tube section 1a, as shown in the figure.
この発光管１の両端の開口部は、ニオブチューブ２が取
着されたセラミックディスク（図示せず）で閉塞されて
いる。The openings at both ends of the arc tube 1 are closed with ceramic disks (not shown) to which niobium tubes 2 are attached.
また、一対の電極３は、この各々ニオブチューブ２に嵌
合され、発光管１内に封装されている。Further, a pair of electrodes 3 are each fitted into the niobium tube 2 and sealed within the arc tube 1.
ここで、この発光管１は、バルブ中心線上を通る電極間
距離を約９０１１ＩＩ１１としてあり、湾曲部１ｂの中
心を通る曲率が約７． ５ｍｍとされ、発光管１の高さ
は略４０■ｍに設定されている。Here, in this arc tube 1, the distance between the electrodes passing on the bulb center line is approximately 9011II11, and the curvature passing through the center of the curved portion 1b is approximately 7. 5 mm, and the height of the arc tube 1 is set to approximately 40 m.
この発光管１の内部には、ナトリウム比が１０乃至２５
重量比のナトリウムアマルガムと、始動用希ガスとして
２０乃至７００ Ｔｏｒｒのキセノンガスが封入されて
いる。Inside this arc tube 1, the sodium ratio is 10 to 25.
A weight ratio of sodium amalgam and a starting rare gas of xenon gas of 20 to 700 Torr are sealed.
発光管１を収納する外管４は、例えば石英ガラスからな
るもので、その内部には、１５〜５００Ｔｏｒｒ程度の
例えばアルゴン、クリプトン、キセノン、窒素等の不活
性ガスが封入されており、またその一端部には、圧潰封
止部５が形成され、ニオブチューブ２を介して電極３と
電気的に接続された電気導入線６がその圧潰封止部５に
封着されている。The outer tube 4 that houses the arc tube 1 is made of, for example, quartz glass, and is filled with an inert gas such as argon, krypton, xenon, or nitrogen at a pressure of about 15 to 500 Torr. A crush sealing portion 5 is formed at one end, and an electrical lead-in wire 6 electrically connected to the electrode 3 via the niobium tube 2 is sealed to the crush sealing portion 5 .
尚、その圧潰封止部５の周囲にはセラミックなどからな
る口金ベース７が装着されている。Incidentally, a base base 7 made of ceramic or the like is mounted around the crushing sealing part 5.
したがって、発光管１はその両端部が外管４の圧潰封止
部５側に向けられ、湾曲部１ｂが外管４のバルブ頂部側
に向けられて収容されているものである。Therefore, the arc tube 1 is housed with both ends facing toward the crushing sealing portion 5 of the outer tube 4 and the curved portion 1b facing toward the bulb top side of the outer tube 4.
ここで、この外管４の頂部には、外管４の排気チップが
形成されており、換言すれば、外管４内面には、凹部８
が形成されているものである。Here, an exhaust tip of the outer tube 4 is formed at the top of the outer tube 4. In other words, a recess 8 is formed on the inner surface of the outer tube 4.
is formed.
また、発光管１の直管部１ａには、例えばステンレス等
の金属線の支持部材９が巻回されており、この支持部材
９の端部は、外管４内面に形成された凹部８に係止され
ている。Further, a support member 9 made of metal wire, such as stainless steel, is wound around the straight tube portion 1a of the arc tube 1, and the end of this support member 9 is inserted into a recess 8 formed on the inner surface of the outer tube 4. It is locked.
上記のような構造の放電灯について、落下試験を実施し
たところ、発光管もしくは外管の破損は一切生じなかっ
た。When a drop test was conducted on a discharge lamp having the above structure, no damage occurred to the arc tube or outer bulb.
これに対し、支持部材のない同様の構成の放電灯を同一
条件で試験したところ、発光管及び外管が破損するもの
があった。On the other hand, when similar discharge lamps without a support member were tested under the same conditions, some of the arc tubes and outer tubes were damaged.
以上のように、実施例で示した支持部材が取着されてい
るものは、落下時の衝撃を受けても、その支持部材に本
り、発光管の移動が規制されるために、発光管等の破損
が生じないことが確認された。As described above, in the case where the support member shown in the example is attached, even if it receives an impact when dropped, the support member will remain on the support member and the movement of the arc tube will be restricted. It was confirmed that no damage occurred.
以上説明した実施例によれば、外管４内面に形成された
凹部８に係止された支持部材９によって発光管１の直管
部１ｂが支持されているため、発光管１を外管４内に確
実に固定支持して収容できるものである。According to the embodiment described above, since the straight tube portion 1b of the arc tube 1 is supported by the support member 9 that is engaged with the recess 8 formed on the inner surface of the outer tube 4, the arc tube 1 can be moved into the outer tube 4. It can be securely supported and accommodated within the interior.
また、放電は電極間の最短経路を結ぶように生起するた
め、湾曲部を有した発光管の場合、その湾曲部の温度が
高くなり、また、その湾曲部の内側と外側の温度差が著
しく大きくなる傾向があり、この湾曲部に支持部材を取
着した場合には、発光管チューブと、その支持部材の温
度差に起因する発光管チューブのクラックが増大する危
惧があるが、本実施例のように、直管部１ａに支持部材
９を取着するものは、直管部１ａの管壁温度が湾曲部１
ｂに比べて低いこと、及び直管部１ａの周方向の温度差
が小さいことなどに影響して、発光管チューブのクラッ
クの増大を防止できるという効果もある。In addition, since discharge occurs by connecting the shortest path between the electrodes, in the case of an arc tube with a curved part, the temperature of the curved part becomes high, and there is a significant temperature difference between the inside and outside of the curved part. If a support member is attached to this curved portion, there is a risk that cracks in the arc tube tube due to the temperature difference between the arc tube tube and its support member will increase. As shown in FIG.
b and the temperature difference in the circumferential direction of the straight tube portion 1a is small, which also has the effect of preventing the increase of cracks in the arc tube tube.
尚、以上の実施例においては、支持部材が外管内面に形
成された凹部に係止されているものについ説明している
が、例えば、外管内面に突起を設けて、この突起に支持
部材が係止されるものであっても良く、また、外管の内
面に弾性的に支持部材が係止されるものであっても良く
、したがって、発光管の直管部を支持する支持部材が、
外管に係止されるものであれば、上記実施例と同様な効
果があるものである。In the above embodiments, the support member is locked in a recess formed on the inner surface of the outer tube. Alternatively, the support member may be elastically locked to the inner surface of the outer tube. Therefore, the support member that supports the straight tube portion of the arc tube may be ,
If it is locked to the outer tube, it will have the same effect as the above embodiment.
また、発光管の形状についても、実施例中ではＵ字状に
形成したものについて説明しているが、本発明はこれに
限るものではなく、例えばＷ字状、コ字状屈曲部等の湾
曲部が形成されたものであれば、上記実施例と同様に適
用できる。Further, regarding the shape of the arc tube, although a U-shaped one is described in the examples, the present invention is not limited to this, and for example, curved parts such as a W-shape, a U-shaped bent part, etc. Any structure in which a portion is formed can be applied in the same manner as in the above embodiment.
し発明の効果］
以上説明した本発明によれば、発光管の直管部を外管に
係止する支持部材を備えているため、発光管を外管内に
確実に固定支持して収容できるセラミック放電灯を提供
できる。[Effects of the Invention] According to the present invention described above, since the straight tube part of the arc tube is provided with the support member that locks it to the outer tube, the ceramic tube can be housed in a securely fixed and supported manner within the outer tube. We can provide discharge lamps.
図面は本発明の一実施例に係る高圧ナトリウムランプを
示す概略図である。
１・・・・・・発光管 １ａ・・・直管部１ｂ
・・・湾曲部 ２・・・・・・ニオブチューブ
３・・・・・・電極 ４・・・・・・外管５
・・・・・・圧潰封止部 ６・・・・・・電気導入
線７・・・・・・口金ベース ８・・・・・・凹部
９・・・・・・支持部材
代理人弁理士 小 野 １）芳 弘The drawing is a schematic diagram showing a high-pressure sodium lamp according to an embodiment of the present invention. 1... Arc tube 1a... Straight tube part 1b
...Curved portion 2...Niobium tube 3...Electrode 4...Outer tube 5
......Crushed sealing part 6...Electrical lead-in wire 7...Base base 8...Recessed part 9...Patent attorney representing support member Ono 1) Yoshihiro
Claims (2)
れた透光性セラミックチューブよりなる気密容器内の両
端部に電極が封装され、発光金属、緩衝用金属および始
動用希ガスが封入された発光管と、上記発光管を収容す
る外管と、上記直管部を上記外管に係止する支持部材を
備えたことを特徴とするセラミック放電灯。(1) Electrodes are sealed at both ends of an airtight container consisting of a straight pipe section and a light-transmitting ceramic tube with a curved section formed continuously on the straight pipe section, and electrodes are sealed at both ends of the tube for luminescent metal, buffer metal, and starter metal. 1. A ceramic discharge lamp comprising: an arc tube filled with a rare gas; an outer bulb that houses the arc tube; and a support member that locks the straight tube section to the outer bulb.
れた透光性セラミックチューブよりなる気密容器内の両
端部に電極が封装され、発光金属、緩衝用金属および始
動用希ガスが封入された発光管と、上記発光管を収容す
る外管とを備えたセラミック放電灯であって、上記外管
内面には凹部が形成されていると共に、上記凹部に係止
された支持部材によって前記直管部が支持されているこ
とを特徴とするセラミック放電灯。(2) Electrodes are sealed at both ends of an airtight container consisting of a straight pipe part and a light-transmitting ceramic tube with a curved part formed in continuation of the straight pipe part, and electrodes are sealed at both ends of the tube for luminescent metal, buffer metal, and starter metal. A ceramic discharge lamp comprising an arc tube filled with rare gas and an outer bulb housing the arc tube, wherein a recess is formed on the inner surface of the outer bulb, and the lamp is locked in the recess. A ceramic discharge lamp characterized in that the straight tube portion is supported by a support member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26153790A JPH04141942A (en) | 1990-09-30 | 1990-09-30 | Ceramic discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26153790A JPH04141942A (en) | 1990-09-30 | 1990-09-30 | Ceramic discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH04141942A true JPH04141942A (en) | 1992-05-15 |
Family
ID=17363277
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26153790A Pending JPH04141942A (en) | 1990-09-30 | 1990-09-30 | Ceramic discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH04141942A (en) |
-
1990
- 1990-09-30 JP JP26153790A patent/JPH04141942A/en active Pending
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