JPS6457560A - High-pressure sodium lamp - Google Patents
High-pressure sodium lampInfo
- Publication number
- JPS6457560A JPS6457560A JP21349287A JP21349287A JPS6457560A JP S6457560 A JPS6457560 A JP S6457560A JP 21349287 A JP21349287 A JP 21349287A JP 21349287 A JP21349287 A JP 21349287A JP S6457560 A JPS6457560 A JP S6457560A
- Authority
- JP
- Japan
- Prior art keywords
- section
- tube
- conductive
- conductive tube
- hole
- 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
Links
Landscapes
- Vessels And Coating Films For Discharge Lamps (AREA)
Abstract
PURPOSE:To suppress the change of the luminous color and prevent the lamp voltage rise by hermetically fixing a conductive tube, with the opening section located at the electrode side and the closed section penetrated by a conductive wire, filling ceramic cement in the gas between the periphery of a hole at the end section of an alumina tube and the barrel section of the conductive tube, and sealing the end section. CONSTITUTION:In the luminous tube of a high-color rendition type high-pressure sodium lamp, the opening section 7a of a conductive tube 7 is located at the electrode 2 side, a conductive wire 6 penetrates a small hole 8 provided on a closed section 7b, and the closed section 7b of the conductive tube 7 is hermetically fixed to the conductive wire 6 with titanic wax 9. The outer diameter of the opening section 7a of the conductive tube 7 is made larger then that of a barrel section 7c, a hole 11 is provided at the end section of a translucent alumina tube 10, and the conductive tube 7 is inserted by pressure. A gap is generated between the periphery of the hole 11 and the barrel section 7c of the conductive tube 7, and the periphery of the hole 11 and the outer periphery of the opening section 7a of the conductive tube 7 are brought into contact with each other. Ceramic cement 12 is filled in the gap.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21349287A JPH083995B2 (en) | 1987-08-27 | 1987-08-27 | High pressure sodium lamp |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP21349287A JPH083995B2 (en) | 1987-08-27 | 1987-08-27 | High pressure sodium lamp |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6457560A true JPS6457560A (en) | 1989-03-03 |
JPH083995B2 JPH083995B2 (en) | 1996-01-17 |
Family
ID=16640096
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP21349287A Expired - Fee Related JPH083995B2 (en) | 1987-08-27 | 1987-08-27 | High pressure sodium lamp |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH083995B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08331247A (en) * | 1995-06-05 | 1996-12-13 | Nec Corp | System for controlling restart at the time of serious fault in exchange |
US6366019B1 (en) | 1999-05-28 | 2002-04-02 | Matsushita Industrial Co., Ltd. | High-pressure sodium lamp |
EP2259120A1 (en) | 2006-10-13 | 2010-12-08 | Hitachi, Ltd. | Projection display system |
-
1987
- 1987-08-27 JP JP21349287A patent/JPH083995B2/en not_active Expired - Fee Related
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08331247A (en) * | 1995-06-05 | 1996-12-13 | Nec Corp | System for controlling restart at the time of serious fault in exchange |
US6366019B1 (en) | 1999-05-28 | 2002-04-02 | Matsushita Industrial Co., Ltd. | High-pressure sodium lamp |
EP2259120A1 (en) | 2006-10-13 | 2010-12-08 | Hitachi, Ltd. | Projection display system |
EP2309301A1 (en) | 2006-10-13 | 2011-04-13 | Hitachi, Ltd. | Projection display system |
Also Published As
Publication number | Publication date |
---|---|
JPH083995B2 (en) | 1996-01-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
LAPS | Cancellation because of no payment of annual fees |