Vehicle lighting with thermal control
AssigneeMagna Exteriors Inc.
InventorsMark Christopher Hlavach, Abishek Sadhu Anchan
Life of this patent
Estimating the term…
Abstract
A vehicle lighting assembly includes a solid state light emitter mounted on a first side of a substrate. A second side of the substrate is connected or adjacent to a heatsink. The heatsink may have a lower thermal conductivity than the second side of the substrate. A blower fluidly engages with the heatsink to flow fluid, e.g., air, through passages in the heatsink. The heatsink can include at least one aperture such that the moving fluid from the blower contacts at least a portion of the second side of the substrate.
Claims19
A vehicle lighting assembly, comprising:
- at least one light emitter;
- a substrate having a first side on which the at least one light emitter is mounted, and a second side remote from the first side and including a thermally conductive material;
- a heatsink adjacent the second side of the substrate, the heatsink including a base defining a surface extending in a flat plane parallel to and spaced apart from the second side of the substrate with a thermal interface material disposed therebetween, the base defining an aperture exposing a portion of the second side of the substrate wherein the heatsink further includes a plurality of fins extending from the surface of the base, away from the substrate, and defining venting passages between adjacent fins of the plurality of fins;
- and
- a blower fluidly engaged with the heatsink to drive air through the heatsink, into the aperture, across the portion of the second side of the substrate and substantially entirely out through the venting passages between the plurality of fins.
A vehicle lighting assembly, comprising:
- at least one light emitter;
- a substrate having a first side on which the at least one light emitter is mounted, and a second side remote from the first side and including a thermally conductive material;
- and
- a heatsink adjacent the second side, the heatsink including a base defining a surface extending in a flat plane parallel to the second side of the substrate, the base defining an aperture exposing a portion of the second side of the substrate, wherein the heatsink includes a plurality of fins extending from the surface of the base and defining venting passages between adjacent fins of the plurality of fins;
- and
- a blower fluidly engaged with the heatsink to drive air through the heatsink, into the aperture, across the portion of the second side of the substrate, and substantially entirely out through the venting passages between the plurality of fins.
A vehicle headlamp assembly comprising:
- a printed circuit board (PCB) having a first side and a second side opposite the first side;
- at least one light emitting diode (LED) mounted to the first side of the PCB and configured to emit light;
- and
- a heatsink contacting the second side of the PCB and configured to dissipate heat generated by the LED, the heatsink including a base defining a surface extending in a flat plane parallel to the second side of the PCB, the base defining an aperture exposing a portion of the second side of the PCB, wherein the heatsink further includes a plurality of fins extending from the surface of the base, away from the substrate, and defining venting passages;
- and
- wherein the plurality of fins are arcuate and extend both circumferentially and radially along the surface of the base.
Dependencies are inferred from the claim text.