LIGHTING DEVICE HAVING A LIGHT SOURCE HEAT SINK ARRANGED SEPARATE FROM A DRIVER

摘要

A lighting device (1) comprising a driver (7) arranged at a base (2) of the lighting device (1), a heat sink (14) arranged at a portion (3) of the lighting device (1), separate from the driver (7), a light source (13) mounted to the heat sink (14), and a wire (10) arranged to electrically connect the light source (13) to the driver (7), wherein a portion of the wire (10) extending from the base (2) to the portion of the lighting device (1) is arranged to be exposed to light from the light source (13). The present embodiment is advantageous in that the thermal performance is improved and the lifetime of the lighting device (1) is increased. Further, the exposed wire (10) may be illuminated by the light source (13) and visible from outside the lighting device (1), thereby having the appearance of a filament.

主权项

1. A lighting device comprising:
a driver arranged at a base of the lighting device, a heat sink arranged at a portion of the lighting device, separate from the driver, a light source mounted to the heat sink, a wire arranged to electrically connect the light source to the driver, and an envelope arranged to enclose at least the light source and an exposed portion of the wire; wherein the wire is arranged separate from the envelope and run freely from the base to the portion of the lighting device, and wherein a portion of the wire extending from the base to said portion of the lighting device is arranged to be exposed to light from the light source.