LED lamp scattering heat swiftly by exchanging currents

An LED lamp scattering heat swiftly by exchanging currents comprising a seat body including an accommodating chamber, a light module installed within said accommodating chamber, and a cooling device correspondingly disposed to said light module;

• wherein, said light module has an electrically-connected circuit board, an optical reflector disposed on said circuit board, and at least one LED unit disposed on said circuit board;
• said cooling device having a fan installed under said circuit board, and a fin set enveloping said circuit board and said optical reflector;
• a room being formed within said fin set for holding said circuit board and said optical reflector;
• a plurality of fin units being extended outward from said fin set;
• wherein, said fin set comprises a plurality of heat scattering areas defined among said fin units at intervals and a plurality of channels disposed between said heat scattering areas;
• each of said heat scattering areas being communicated with said accommodating chamber and disposed corresponding to said fan;
• a side of each channel toward said seat body being formed into a closed stated;
• at least one first hole being defined on a periphery wall of each channel and disposed corresponding to said adjacent fin unit for assisting said channels in communicating with said heat scattering areas, thereby introducing exterior air into said seat body through said channels and allowing said fan to guide said exterior air into said heat scattering areas for resulting in a current exchanging effect between said exterior air and wasted heat from said LED lamp.