JPS5750760A - Electrode for discharge lamp - Google Patents
Electrode for discharge lampInfo
- Publication number
- JPS5750760A JPS5750760A JP12766880A JP12766880A JPS5750760A JP S5750760 A JPS5750760 A JP S5750760A JP 12766880 A JP12766880 A JP 12766880A JP 12766880 A JP12766880 A JP 12766880A JP S5750760 A JPS5750760 A JP S5750760A
- Authority
- JP
- Japan
- Prior art keywords
- tip
- emitter
- pin
- metal
- discharge lamp
- 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
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/04—Electrodes; Screens; Shields
- H01J61/06—Main electrodes
- H01J61/067—Main electrodes for low-pressure discharge lamps
Landscapes
- Discharge Lamp (AREA)
Abstract
PURPOSE:To facilitate the start of discharge by providing a metallic pin conducting with a metal pot from the inner bottom face of the metal pot filled with an emitter toward the open section such that the tip isn't consealed, thereby concentrating the electric field at the tip of the metal pin. CONSTITUTION:In a sintered electrode for a discharge lamp such as a fluorescent lamp, a metal pin 8 electrically conducting with a metal pot 7 is provided from the inner bottom face 7a of the metal pot 7 filled with an emitter 9 toward an open section 7b such that the tip isn't consealed. Here the tip of the pin 8 is formed through the electrolytic abrasion into a needle while the powder of at least one element selected from W, Ta, Zr, Fe is mixed to the emitter 9. Since the electric field produced during the start of a discharge lamp will concentrate at the tip, the time required for the heating of the emitter 9 is shortened resulting in the facilitation of the starting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12766880A JPS5750760A (en) | 1980-09-13 | 1980-09-13 | Electrode for discharge lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12766880A JPS5750760A (en) | 1980-09-13 | 1980-09-13 | Electrode for discharge lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5750760A true JPS5750760A (en) | 1982-03-25 |
Family
ID=14965762
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12766880A Pending JPS5750760A (en) | 1980-09-13 | 1980-09-13 | Electrode for discharge lamp |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5750760A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62275085A (en) * | 1986-02-24 | 1987-11-30 | Nippon Mining Co Ltd | Sealing method for ampule for synthesizing crystal and vacuum exhauster |
| EP0378338A2 (en) * | 1989-01-12 | 1990-07-18 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
| US5278474A (en) * | 1989-01-12 | 1994-01-11 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
| WO1999034402A1 (en) * | 1997-12-26 | 1999-07-08 | Toshiba Lighting & Technology Corporation | Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus |
-
1980
- 1980-09-13 JP JP12766880A patent/JPS5750760A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62275085A (en) * | 1986-02-24 | 1987-11-30 | Nippon Mining Co Ltd | Sealing method for ampule for synthesizing crystal and vacuum exhauster |
| EP0378338A2 (en) * | 1989-01-12 | 1990-07-18 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
| US5278474A (en) * | 1989-01-12 | 1994-01-11 | Tokyo Densoku Kabushiki Kaisha | Discharge tube |
| WO1999034402A1 (en) * | 1997-12-26 | 1999-07-08 | Toshiba Lighting & Technology Corporation | Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus |
| EP0964429A1 (en) * | 1997-12-26 | 1999-12-15 | Toshiba Lighting & Technology Corporation | Electrode structure for electron emission, discharge lamp, and discharge lamp apparatus |
| EP0964429A4 (en) * | 1997-12-26 | 2001-03-21 | Toshiba Lighting & Technology | ELECTRODE STRUCTURE FOR ELECTRONIC TRANSMISSION, DISCHARGE LAMP, AND DISCHARGE LAMP APPARATUS |
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