Patent ID: 7780315

Claim:
A lighting or signaling device comprising: an electrically insulating printed circuit board comprising at least two electrically conductive tracks; at least one light-emitting diode comprising a heat dissipation base and a pair of electrical connection tabs, each connection tab having to be electrically connected to a conductive track of said printed circuit board, said heat dissipation base comprising a heat exchange face; and a heat dissipater extending facing said printed circuit board, wherein said heat dissipater comprises at least one heat exchange portion being coupled to said heat exchange face of said at least one light-emitting diode, said at least one heat exchange portion of said heat dissipater comprises orienting means for orienting said at least one light-emitting diode, said orienting means protruding from a region of said at least one heat exchange portion of said heat dissipater, said heat exchange face of said at least one light-emitting diode being placed on and in direct contact with said orienting means, said orienting means engaging said heat dissipation base and orienting each of said at least one light-emitting diodes relative to a reference plane of said heat dissipater; wherein said at least one heat exchange portion comprises a non-orienting portion corresponding to areas of the heat exchange portion that do not comprise said orienting means, said device further comprising a contributing material arranged between said non-orienting portion of said heat dissipater and said heat exchange face of said heat dissipation base of each associated diode, in order to fix said non-orienting portion with said heat dissipation base of each diode and to form a heat seal between said at least one heat exchange portion and said heat dissipation base of each diode; wherein said contributing material is not arranged between said orienting means and said heat dissipation base.