Expandable liquid volume in an LED bulb
US8152341B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 4, 2011 |
| Grant date | Apr 10, 2012 |
| Priority date | — |
| Expiry date | Feb 4, 2031 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49002
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An LED bulb includes a base, a shell, a plurality of LEDs, a thermally conductive liquid, and a liquid-volume compensator mechanism. The shell is connected to the base. The plurality of LEDs is attached to the base and disposed within the shell. The thermally conductive liquid is held within the shell. The liquid-volume compensator mechanism is attached to the base. The liquid-volume compensator mechanism is configured to compensate for expansion of the thermally conductive liquid. The liquid-volume compensator mechanism moves from a first position to a second position. A first volume is provided for the thermally conductive liquid in the first position. A second volume, which is greater than the first volume, is provided for the thermally conductive liquid in the second position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.