Patent ID: 7621664

Claim:
A lighting and/or signaling device for a motor vehicle comprising at least one power light emitting diode light source and at least one other light source of heat, comprising a support piece at least partially formed from a material comprising an anisotropic graphite, said support piece comprising a first surface for supporting said power light emitting diode light source and a second surface for separating said power light emitting diode light source from said at least one other light source of heat to oppose an effect of heat from said at least one other light source of heat on a thermal environment of said at least one power light emitting diode light source, each of said first surface and said second surface comprising anisotropic properties that facilitate transferring heat away from each of said at least one power light emitting diode light source and said at least one other light source of heat; wherein said second surfaces comprise a wall separating said at least one power light emitting diode light source from the said at least one other light source of heat; wherein said wall has a thermal resistance greater across its thickness than longitudinally.