Vehicle lamp with a heating function and method for manufacturing components of the vehicle lamp
US11384919B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 18, 2019 |
| Grant date | Jul 12, 2022 |
| Priority date | — |
| Expiry date | Feb 9, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/0274
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A vehicle lamp includes a housing including a compartment having an opening. A reflective unit and a lighting unit are mounted in the compartment. The lighting unit includes a first circuit board and a first LED. A lens is mounted to a front end of the housing and covers the opening of the compartment. The reflective unit reflects light rays from the first LED to transmit through the lens. A heating unit includes a substrate made of a light transmittable material and a heating layer disposed on the substrate. A sensor is mounted in the compartment for detecting temperature. When the detected temperature is lower than a first predetermined temperature, the heating layer is activated to proceed with an electrical heating operation. When the detected temperature is higher than a second predetermined temperature, the electrical heating operation of the heating layer is stopped or gradually reduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.