JPH0279556U - - Google Patents
Info
- Publication number
- JPH0279556U JPH0279556U JP15911188U JP15911188U JPH0279556U JP H0279556 U JPH0279556 U JP H0279556U JP 15911188 U JP15911188 U JP 15911188U JP 15911188 U JP15911188 U JP 15911188U JP H0279556 U JPH0279556 U JP H0279556U
- Authority
- JP
- Japan
- Prior art keywords
- ceramic
- discharge lamp
- conductor
- molded product
- metal vapor
- 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 claims description 19
- 239000004020 conductor Substances 0.000 claims description 10
- 229910052751 metal Inorganic materials 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 7
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims 2
- 229910052750 molybdenum Inorganic materials 0.000 claims 2
- 239000011733 molybdenum Substances 0.000 claims 2
- 229910004298 SiO 2 Inorganic materials 0.000 claims 1
- 230000037431 insertion Effects 0.000 claims 1
- 238000003780 insertion Methods 0.000 claims 1
- 238000007789 sealing Methods 0.000 claims 1
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
第１図は本考案にかかる金属蒸気放電灯の発光
管の一端断面図、第２図は第１図における閉塞体
の断面図、第３図は第２図における閉塞体のア−
ア′線断面図である。第４図は従来の発光管の一
端断面図である。
２……セラミツク成形品、３……タングステン
導電膜、４……セラミツク導電体、８……極芯。
FIG. 1 is a sectional view of one end of the arc tube of the metal vapor discharge lamp according to the present invention, FIG. 2 is a sectional view of the closing body in FIG. 1, and FIG. 3 is a sectional view of the closing body in FIG. 2.
FIG. FIG. 4 is a sectional view of one end of a conventional arc tube. 2... Ceramic molded product, 3... Tungsten conductive film, 4... Ceramic conductor, 8... Polar core.
Claims (1)
てなる発光管を有する金属蒸気放電灯において、
閉塞体はセラミツク成形品とセラミツク導電体と
からなり、セラミツク導電体がセラミツク成形品
より発光管の外表面側に設けられており、さらに
セラミツク導電体の発光管の内表面側の端部には
電極の極芯がセラミツク成形品を貫通してセラミ
ツク導電体に取付けられていることを特徴とする
金属蒸気放電灯。 ２ 請求項１記載の金属蒸気放電灯において、セ
ラミツク導電体として、セラミツク成形体の外表
面にタングステンまたはモリブデンを主成分とす
る導電膜を設けたセラミツク導電体を用いたこと
を特徴とする金属蒸気放電灯。 ３ 請求項２記載の金属蒸気放電灯において、セ
ラミツク成形品としてアルミナ純度９９％以上の
高純度アルミナからなるセラミツク成形品を用い
、セラミツク導電体としてＳｉＯ２，ＭｇＯ，Ｃ
ａＯを合計で数重量％含んだアルミナセラミツク
体の外表面にタングステンまたはモリブデンを主
成分とする膜厚５〜１００μｍの導電膜を設けた
セラミツク導電体を用いたことを特徴とする金属
蒸気放電灯。 ４ 電極の極芯とセラミツク成形品の貫通孔との
隙間が２．５mm以下、挿入深さが２mm以上である
ことを特徴とする請求項１，２または３記載の金
属蒸気放電灯。[Claims for Utility Model Registration] 1. A metal vapor discharge lamp having an arc tube formed by sealing the end of a translucent ceramic tube with a closing body,
The closure body consists of a ceramic molded product and a ceramic conductor, the ceramic conductor is provided closer to the outer surface of the arc tube than the ceramic molded product, and the ceramic conductor is provided at the end of the ceramic conductor closer to the inner surface of the arc tube. A metal vapor discharge lamp characterized in that a pole core of an electrode penetrates a ceramic molded product and is attached to a ceramic conductor. 2. The metal vapor discharge lamp according to claim 1, wherein the ceramic conductor is a ceramic conductor in which a conductive film containing tungsten or molybdenum as a main component is provided on the outer surface of a ceramic molded body. discharge lamp. 3. In the metal vapor discharge lamp according to claim 2, a ceramic molded product made of high-purity alumina with an alumina purity of 99% or more is used as the ceramic molded product, and the ceramic conductor is made of SiO 2 , MgO, C.
A metal vapor discharge lamp characterized in that a ceramic conductor is used, in which a conductive film with a thickness of 5 to 100 μm mainly composed of tungsten or molybdenum is provided on the outer surface of an alumina ceramic body containing several weight percent of aO in total. . 4. The metal vapor discharge lamp according to claim 1, 2 or 3, wherein the gap between the electrode core and the through hole of the ceramic molded product is 2.5 mm or less, and the insertion depth is 2 mm or more.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15911188U JPH0279556U (en) | 1988-12-07 | 1988-12-07 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15911188U JPH0279556U (en) | 1988-12-07 | 1988-12-07 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0279556U true JPH0279556U (en) | 1990-06-19 |
Family
ID=31440036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15911188U Pending JPH0279556U (en) | 1988-12-07 | 1988-12-07 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0279556U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5271695A (en) * | 1975-12-09 | 1977-06-15 | Thorn Electrical Ind Ltd | Lamp and discharging equipment and material therefor |
| JPS5347635A (en) * | 1976-10-12 | 1978-04-28 | Omron Tateisi Electronics Co | Guide system for moving body |
| JPS62176043A (en) * | 1985-10-30 | 1987-08-01 | Japan Storage Battery Co Ltd | Metallic vapor discharge lamp |
-
1988
- 1988-12-07 JP JP15911188U patent/JPH0279556U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5271695A (en) * | 1975-12-09 | 1977-06-15 | Thorn Electrical Ind Ltd | Lamp and discharging equipment and material therefor |
| JPS5347635A (en) * | 1976-10-12 | 1978-04-28 | Omron Tateisi Electronics Co | Guide system for moving body |
| JPS62176043A (en) * | 1985-10-30 | 1987-08-01 | Japan Storage Battery Co Ltd | Metallic vapor discharge lamp |
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