| 摘要 |
A lamp assembly ( 10 ) that comprises a reflector ( 12 ) for directing light in a given direction. An aperture ( 14 ) is formed in the reflector ( 12 ), substantially in the base thereof, and a thermally conductive post ( 16 ) is fitted in the aperture ( 14 ) and has a first surface ( 18 ) within the reflector and a second surface ( 20 ) outside of the reflector. The post ( 16 ) is preferably a metal such as copper. A single, side emitting, LED light source ( 22 ) is fixed to the first surface ( 18 ), preferably via an electrically insulating but thermally conductive member ( 23 ). A heat sink ( 24 ) is fixed to the second surface ( 20 ) and preferably is an inherent part thereof to insure good heat conductivity between the post ( 16 ) and the heat sink ( 24 ). Circuitry ( 26 ), which can be mounted on a printed circuit board, is associated with the LED source ( 22 ) for supplying power thereto. Suitable electrical connections, not shown, can be supplied from the circuitry ( 26 ) to the LED light source ( 22 ) via insulated wires running up the side of the post ( 16 ) or threaded through longitudinal apertures formed in the post ( 16 ). Alternatively, an electrically insulating material supplied with conductive traces can cover the post ( 16 ). The LED light source can include a cap having a secondary reflector thereon or the light source ( 22 ) can be covered by a dome-shaped, transparent element having sidewalls and a closed top having at least one metallized surface and including an optic. |
