Automotive lamp comprising a LED lighting device
US9713220B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 24, 2014 |
| Grant date | Jul 18, 2017 |
| Priority date | — |
| Expiry date | Oct 24, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05B45/46
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
An automotive lamp with a lighting device is provided that includes a LED lighting circuit designed to generate a luminous flux on the basis of a driving current, a controlling electrical circuit which provides the driving current on the basis of a reference electrical quantity and of a sensed electrical quantity, and a compensating electrical circuit, which is configured so as to vary the reference electrical quantity by way of a compensation function of the luminous flux predetermined, on the basis of the temperature of the LED lighting circuit. The compensating electrical circuit includes a resistive conditioning electrical device that conditions the compensation function of the luminous flux so as to vary the reference electrical quantity in a predetermined way in response to a change in temperature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.