Fluorescent task lamp with optimized bulb alignment and ballast
US7201491B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 1, 2005 |
| Grant date | Apr 10, 2007 |
| Priority date | — |
| Expiry date | Apr 1, 2025 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF21Y2103/37
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A handheld fluorescent task lamp comprising a housing assembly having a housing and a tubular lens body enclosing compact fluorescent bulbs, an elongated spine configured for slidingly supporting the lens body, and a resilient bulkhead for cushioning the compact fluorescent bulbs in the lens body; an electronic ballast circuit within the housing comprising a power supply, a self-starting electronic driver circuit operable to start and run at least first and second CFL bulbs; a bulb accommodation circuit that enables operation of the electronic ballast circuit with either starter type or non-starter type and regardless whether one or both CFL bulbs are connected to the driver circuit; and an illumination assembly, wherein the CFL bulbs are oriented with respect to each other such that an enhanced forward emission field is provided.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.