Flexible substrate mounted solid-state light sources for use in line current lamp sockets
US6580228B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 22, 2000 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Sep 25, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S362/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A lamp using solid-state light emitting sources is configured to be used in a conventional socket. The lamp includes a flexible substrate on which are mounted a plurality of light emitting sources, such as light emitting diodes (LEDs) in spaced-apart array. In one embodiment, a flexible substrate configured as a generally rectangular panel formed into a cylindrical shape includes a plurality of conductive traces to which the LEDs are connected both mechanically and electrically. The flexible substrate is then enclosed within a light transmissive translucent cover that is attached to a base in which is disposed a power supply. The base is shaped and configured to be threaded into a conventional incandescent light socket and includes a center terminal through which AC line power is supplied to the power supply. The power supply provides an appropriate voltage and current to energize the light sources so that they produce a white light that is emitted radially outward around a longitudinal axis of the lamp. In a different embodiment, the light sources are mounted on a flexible substrate formed as a strand or thread that is wound in a helix around a cylindrical support. The light sourc…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.