Patent ID: 8783912

Claim:
A cup-shaped heat dissipater ( 100 ) for an electric luminous body ( 200 ), the electric luminous body being accommodated on an exterior surface of a bottom ( 120 ) of the cup-shaped heat dissipater ( 100 ), comprising: a heat conductive rib structure ( 310 ) extending upwardly from an interior surface of the bottom ( 120 ) of the cup-shaped heat dissipater ( 100 ), said heat conductive rib structure ( 310 ) further extending laterally to an upwardly-extending outer periphery ( 101 ) of the cup-shaped heat dissipater ( 100 ) and forming one of: (i) a grid, and (ii) at least one central structure with radially extending connecting sections, wherein at least one flow guide hole is formed in the cup-shaped heat dissipater ( 100 ) to permit passage of air into the cup-shaped heat dissipater ( 100 ) and past surfaces of the heat conductive rib structure ( 310 ) to an exterior of the cup-shaped heat dissipater ( 100 ), said at least one flow guide hole having at least one of the following configurations: (a) the at least one flow guide hole includes a plurality of flow guide holes ( 301 ) annularly arranged in the bottom ( 120 ) of the cup-shaped heat dissipater ( 100 ); (b) the at least one flow guide hole includes at least one flow guide hole ( 302 ) at a center of the bottom ( 120 ) of the cup-shaped heat dissipater ( 100 ); (c) the at least one flow guide hole includes at least one radially-extending flow guide hole ( 303 ) in the outer periphery ( 101 ) of the cup-shaped heat dissipater ( 100 ); (d) the at least one flow guide hole includes at least one inclined flow guide hole at an edge of the bottom surface 120 of the cup-shaped heat dissipater ( 100 ).