US Patent No. 10,208,915


Patent No. 10,208,915
Issue Date February 19, 2019
Title Thermal Function Of Headlight Sealing Cap
Inventorship Martinus Petrus Creusen, San Jose, CA (US)
Lukas Kuepper, San Jose, CA (US)
Assignee Lumileds LLC, San Jose, CA (US)

Claim of US Patent No. 10,208,915

1. Headlight unit including:a reflector with a reflector neck;
a lamp mounting cavity provided at said reflector neck;
a lamp mounted within said lamp mounting cavity;
an outer reflector housing with a cylindrical wall and a peripheral portion extending from said cylindrical wall, said peripheral portion being in contact with said reflector, said cylindrical wall being around said reflector neck to form concentric rings; and
a cap integrally formed in a single piece of at least partly flexible material devoid of any additional sealing element for fixing said cap, wherein:
said cap extends to and flexibly surrounds said cylindrical wall to close off said lamp mounting cavity sealing said mounting cavity against dust and moisture,
said cap is dismountable from said cavity separate from said lamp,
said cap is provided as a heat spreader and dissipation element in thermal contact with said lamp, and
said cap has a thermal conductivity of more than 50 W/mK.