JP4723190B2 - 高圧放電ランプのための電極 - Google Patents
高圧放電ランプのための電極 Download PDFInfo
- Publication number
- JP4723190B2 JP4723190B2 JP2004009797A JP2004009797A JP4723190B2 JP 4723190 B2 JP4723190 B2 JP 4723190B2 JP 2004009797 A JP2004009797 A JP 2004009797A JP 2004009797 A JP2004009797 A JP 2004009797A JP 4723190 B2 JP4723190 B2 JP 4723190B2
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- curvature
- perforation
- radius
- end portion
- 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 - Fee Related
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
- H01J61/18—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent
- H01J61/22—Selection of substances for gas fillings; Specified operating pressure or temperature having a metallic vapour as the principal constituent vapour of an alkali metal
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/073—Main electrodes for high-pressure discharge lamps
- H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
- H01J61/0672—Main electrodes for low-pressure discharge lamps characterised by the construction of the electrode
Landscapes
- Discharge Lamp (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
電極を形成する軸(7)の放電側に穿孔が設けられ、該穿孔は該軸(7)の側壁によって包囲されており、該穿孔に放出材料(10)が充填されており、
前記軸(7)の側壁の放電側の頂部を、頂部内側部分と頂部外側部分とに分けるとすると、該頂部内側部分は該穿孔に対して凸形に湾曲されており、該頂部外側部分は該穿孔の側壁に対して凸形に湾曲されており、
前記頂部内側部分は、所定の曲率半径Ri>0を有し、
前記頂部外側部分は、該頂部外側部分の表面によって生成された電界強度が、前記頂部内側部分の表面によって生成された電界強度より大きくなるように形成されていることを特徴とする電極
によって解決される。
内径 300μm
穿孔部の深さ 4.5nm
内側曲率半径Ri 140μm
外側曲率半径Ra 140μm
従来の電極を備えたランプに対する発光効率の差は、100時間経過後ですでに2.2%であり、点灯時間が長くなるにつれて単調に増大する。側壁12の端部内側における堆積物形成も、視覚的に比較しても、従来の構成より格段に少ない。
2 放電容器
3 端部
4 ガラスろう
5 給電線
6,19 電極
7 コアピン
8 螺旋体
8a,8b 巻き線の層
9 放出容器
10 放出材料
11 放出材料の表面
12 容器壁
13,24,26,30 端部内側部分
14,25,27,31 端部外側部分
15 放出容器の外側側壁
16,23 中央穿孔
20 ヘッド
21 軸
22 ペレット
28 接線
29,32 尖端
Claims (2)
- 高圧放電ランプ用の電極であって、
該電極は、高融点の導電性材料から形成され、ピン状の軸(7)から成り、
前記軸(7)の頭部が放電側に穿孔部を有し、該穿孔部は該頭部の側壁によって包囲されており、該穿孔部に放出材料(10)が充填されており、
前記側壁の放電側の端部を、端部内側部分と端部外側部分とに分けると、該端部内側部分は該穿孔部に対して凸形に湾曲されており、該端部外側部分は該穿孔部と反対側で凸形に湾曲されており、
前記端部内側部分は、所定の曲率半径Ri>0を有し、
前記端部外側部分も所定の曲率半径を有し、前記端部内側部分の内側曲率半径Riは前記端部外側部分の外側曲率半径Raより大きいこと、すなわちRi>Raであることにより、該端部外側部分の表面によって生成された電界強度が、前記端部内側部分の表面によって生成された電界強度より大きくなるようにされていることを特徴とする電極。 - 請求項1記載の電極を有することを特徴とするランプ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10301478A DE10301478A1 (de) | 2003-01-16 | 2003-01-16 | Elektrode für eine Hochdruckentladungslampe |
DE10301478.0 | 2003-01-16 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010293698A Division JP5150716B2 (ja) | 2003-01-16 | 2010-12-28 | 高圧放電ランプのための電極 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2004221090A JP2004221090A (ja) | 2004-08-05 |
JP4723190B2 true JP4723190B2 (ja) | 2011-07-13 |
Family
ID=32520003
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2004009797A Expired - Fee Related JP4723190B2 (ja) | 2003-01-16 | 2004-01-16 | 高圧放電ランプのための電極 |
JP2010293698A Expired - Fee Related JP5150716B2 (ja) | 2003-01-16 | 2010-12-28 | 高圧放電ランプのための電極 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2010293698A Expired - Fee Related JP5150716B2 (ja) | 2003-01-16 | 2010-12-28 | 高圧放電ランプのための電極 |
Country Status (7)
Country | Link |
---|---|
US (1) | US6984939B2 (ja) |
EP (1) | EP1439567B1 (ja) |
JP (2) | JP4723190B2 (ja) |
KR (1) | KR101036689B1 (ja) |
AT (1) | ATE422708T1 (ja) |
CA (1) | CA2455087A1 (ja) |
DE (2) | DE10301478A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011077057A (ja) * | 2003-01-16 | 2011-04-14 | Patent Treuhand Ges Elektr Gluehlamp Mbh | 高圧放電ランプのための電極 |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101536141B (zh) | 2006-12-18 | 2011-07-27 | 奥斯兰姆有限公司 | 用于放电灯的电极 |
DE102009055123A1 (de) * | 2009-12-22 | 2011-06-30 | Osram Gesellschaft mit beschränkter Haftung, 81543 | Keramische Elektrode für eine Hochdruckentladungslampe |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887603A (en) * | 1956-02-24 | 1959-05-19 | Philips Corp | Compact source lamp |
US3798492A (en) * | 1971-05-17 | 1974-03-19 | Itt | Emissive electrode |
JPS4950776A (ja) * | 1972-06-14 | 1974-05-17 | ||
JPH05325892A (ja) * | 1992-05-15 | 1993-12-10 | Hitachi Ltd | 高圧ナトリウムランプ |
JP2002141018A (ja) * | 2000-11-06 | 2002-05-17 | Ushio Inc | 放電ランプ |
Family Cites Families (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL99793C (ja) * | 1957-08-10 | 1961-11-15 | ||
US3114855A (en) * | 1961-06-27 | 1963-12-17 | Bausch & Lomb | Gas discharge lamp with a collimating reflector electrode |
US3560790A (en) * | 1967-07-27 | 1971-02-02 | Perkin Elmer Corp | Alkali metal cathode lamps |
US3619699A (en) * | 1970-05-25 | 1971-11-09 | Gen Electric | Discharge lamp having cavity electrodes |
US3777200A (en) * | 1971-05-14 | 1973-12-04 | Nasa | High powered arc electrodes |
US3916241A (en) | 1972-06-14 | 1975-10-28 | Gte Sylvania Inc | High pressure electric discharge lamp and electrode therefor |
US3983440A (en) * | 1973-01-08 | 1976-09-28 | Thorn Electrical Industries Limited | Discharge lamp component |
DE2424549A1 (de) * | 1973-05-23 | 1974-12-12 | John Michael Prof Thompson | Stroemungsmittelanalysiergeraet |
JPS5133356A (ja) | 1974-09-14 | 1976-03-22 | Shinko Burain Kk | Hakeikeishabannyoruchinkobunrisochi |
JPH0276463U (ja) * | 1988-11-30 | 1990-06-12 | ||
US5686789A (en) * | 1995-03-14 | 1997-11-11 | Osram Sylvania Inc. | Discharge device having cathode with micro hollow array |
JP2938838B2 (ja) | 1998-01-26 | 1999-08-25 | ティーディーケイ株式会社 | 放電灯用電極とその製造方法 |
JP2002289134A (ja) | 2001-03-27 | 2002-10-04 | West Electric Co Ltd | 冷陰極放電管及び照明装置 |
DE10301478A1 (de) * | 2003-01-16 | 2004-07-29 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH | Elektrode für eine Hochdruckentladungslampe |
-
2003
- 2003-01-16 DE DE10301478A patent/DE10301478A1/de not_active Withdrawn
- 2003-12-17 AT AT03029105T patent/ATE422708T1/de not_active IP Right Cessation
- 2003-12-17 EP EP03029105A patent/EP1439567B1/de not_active Expired - Lifetime
- 2003-12-17 DE DE50311168T patent/DE50311168D1/de not_active Expired - Lifetime
-
2004
- 2004-01-07 US US10/751,939 patent/US6984939B2/en not_active Expired - Fee Related
- 2004-01-13 CA CA002455087A patent/CA2455087A1/en not_active Abandoned
- 2004-01-14 KR KR1020040002584A patent/KR101036689B1/ko not_active IP Right Cessation
- 2004-01-16 JP JP2004009797A patent/JP4723190B2/ja not_active Expired - Fee Related
-
2010
- 2010-12-28 JP JP2010293698A patent/JP5150716B2/ja not_active Expired - Fee Related
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2887603A (en) * | 1956-02-24 | 1959-05-19 | Philips Corp | Compact source lamp |
US3798492A (en) * | 1971-05-17 | 1974-03-19 | Itt | Emissive electrode |
JPS4950776A (ja) * | 1972-06-14 | 1974-05-17 | ||
JPH05325892A (ja) * | 1992-05-15 | 1993-12-10 | Hitachi Ltd | 高圧ナトリウムランプ |
JP2002141018A (ja) * | 2000-11-06 | 2002-05-17 | Ushio Inc | 放電ランプ |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011077057A (ja) * | 2003-01-16 | 2011-04-14 | Patent Treuhand Ges Elektr Gluehlamp Mbh | 高圧放電ランプのための電極 |
Also Published As
Publication number | Publication date |
---|---|
EP1439567A3 (de) | 2006-07-05 |
US20040140767A1 (en) | 2004-07-22 |
CA2455087A1 (en) | 2004-07-16 |
JP2004221090A (ja) | 2004-08-05 |
JP5150716B2 (ja) | 2013-02-27 |
US6984939B2 (en) | 2006-01-10 |
EP1439567B1 (de) | 2009-02-11 |
KR101036689B1 (ko) | 2011-05-24 |
DE50311168D1 (de) | 2009-03-26 |
ATE422708T1 (de) | 2009-02-15 |
DE10301478A1 (de) | 2004-07-29 |
JP2011077057A (ja) | 2011-04-14 |
KR20040066019A (ko) | 2004-07-23 |
EP1439567A2 (de) | 2004-07-21 |
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