| 摘要 |
An LED light source (10) has a housing (12) having a base (14). A hollow core (16) projects from the base (14) and is arrayed about a longitudinal axis (18). A printed circuit board (20) is positioned in the base (14) at one end (22) of the hollow core (16) and has a plurality of LEDs (24) operatively fixed thereto about the center thereof. In a preferred embodiment of the invention the hollow core (16) is tubular and the printed circuit board (20) is circular. A light guide (28) with a body (30) that, in a preferred embodiment, is cup-shaped as shown in Figs. 2 and 4a, has a given wall thickness "T". The light guide (28) is positioned in the hollow core (16) and has a first end (32) in operative relation with the plurality of LEDs (24) and a second end (34) projecting beyond the hollow core. The thickness "T" is at least large enough to encompass the emitting area of the LEDs that are employed with it. |
