Fluorescent lamp having separate cooling means for ballast and fluorescent tube
US4503358A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 1, 1982 |
| Grant date | Mar 5, 1985 |
| Priority date | — |
| Expiry date | Jun 1, 2002 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01J61/32
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A fluorescent lamp device according to the present invention includes a ballast, a screw base electrically connected to the ballast, a fluorescent tube curved in an arc at three portions thereof, a bowl-shaped member for housing the ballast with the screw base fixed projecting outside therefrom, a globe, and a partition plate attached to an open end of the member so as to thermally isolate or insulate the ballast from the fluorescent tube and to which the fluorescent tube is fixed. The bowl-shaped member is provided with a plurality of ventilating slits for discharging heat radiated from the ballast, and also with air-ducts for communicating the space inside the globe with the outside air. The globe is also provided with holes at the top portion thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.