EP0441387A3 - Low pressure gas discharge lamp - Google Patents
Low pressure gas discharge lamp Download PDFInfo
- Publication number
- EP0441387A3 EP0441387A3 EP19910101715 EP91101715A EP0441387A3 EP 0441387 A3 EP0441387 A3 EP 0441387A3 EP 19910101715 EP19910101715 EP 19910101715 EP 91101715 A EP91101715 A EP 91101715A EP 0441387 A3 EP0441387 A3 EP 0441387A3
- Authority
- EP
- European Patent Office
- Prior art keywords
- low pressure
- discharge lamp
- gas discharge
- pressure gas
- 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.)
- Withdrawn
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
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
- H01J61/366—Seals for leading-in conductors
- H01J61/368—Pinched seals or analogous seals
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/02—Details
- H01J61/36—Seals between parts of vessels; Seals for leading-in conductors; Leading-in conductors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
- H01J61/00—Gas-discharge or vapour-discharge lamps
- H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
- H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
- H01J61/78—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only with cold cathode; with cathode heated only by discharge, e.g. high-tension lamp for advertising
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2027073A JPH03233854A (en) | 1990-02-08 | 1990-02-08 | Cold cathode fluorescent lamp |
JP27073/90 | 1990-02-08 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0441387A2 EP0441387A2 (en) | 1991-08-14 |
EP0441387A3 true EP0441387A3 (en) | 1992-04-15 |
Family
ID=12210897
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19910101715 Withdrawn EP0441387A3 (en) | 1990-02-08 | 1991-02-07 | Low pressure gas discharge lamp |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0441387A3 (en) |
JP (1) | JPH03233854A (en) |
KR (1) | KR940006312B1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6037714A (en) * | 1995-09-19 | 2000-03-14 | Philips Electronics North America Corporation | Hollow electrodes for low pressure discharge lamps, particularly narrow diameter fluorescent and neon lamps and lamps containing the same |
JP2004071276A (en) * | 2002-08-05 | 2004-03-04 | Nec Lighting Ltd | Cold cathode lamp and electronic apparatus using cold cathode lamp |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2056665A (en) * | 1934-08-18 | 1936-10-06 | Gen Electric | Vapor electric discharge device |
US2153009A (en) * | 1935-09-10 | 1939-04-04 | Gen Electric | Electric discharge lamp |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63259958A (en) * | 1987-04-16 | 1988-10-27 | Toshiba Corp | Ceramic discharge lamp |
-
1990
- 1990-02-08 JP JP2027073A patent/JPH03233854A/en active Pending
-
1991
- 1991-02-07 EP EP19910101715 patent/EP0441387A3/en not_active Withdrawn
- 1991-02-07 KR KR1019910002189A patent/KR940006312B1/en not_active IP Right Cessation
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2056665A (en) * | 1934-08-18 | 1936-10-06 | Gen Electric | Vapor electric discharge device |
US2153009A (en) * | 1935-09-10 | 1939-04-04 | Gen Electric | Electric discharge lamp |
Non-Patent Citations (2)
Title |
---|
INFORMATION DISPLAY. vol. 5, no. 11, November 1989, NEW YORK US pages 8 - 13; W. B. MERCER ET AL.: 'Fluorescent backlights for LCDs' * |
PATENT ABSTRACTS OF JAPAN vol. 13, no. 78 (E-718)(3426) 22 February 1989 & JP-A-63 259 958 ( TOSHIBA CORP ) 27 October 1988 * |
Also Published As
Publication number | Publication date |
---|---|
KR910016044A (en) | 1991-09-30 |
KR940006312B1 (en) | 1994-07-14 |
JPH03233854A (en) | 1991-10-17 |
EP0441387A2 (en) | 1991-08-14 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19910304 |
|
AK | Designated contracting states |
Kind code of ref document: A2 Designated state(s): DE GB |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Kind code of ref document: A3 Designated state(s): DE GB |
|
17Q | First examination report despatched |
Effective date: 19940627 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN |
|
18D | Application deemed to be withdrawn |
Effective date: 19941108 |