| 摘要 |
Disclosed is a printed circuit board (100, 100'; 200, 200') for accommodating at least one light emitting diode, comprising: at least one insulating region on at least one side of the circuit board, said insulating region providing an air gap and leakage path (140, 140'; 240, 240') between the conductive traces (120, 120'; 220, 220') on the circuit board (100, 100'; 200, 200') and the outer periphery of the circuit board (100, 100'; 200, 200'). At least one insulating region includes a tongue-and-groove means (150, 160, 150', 160'; 250, 260) which can be made to engage with a corresponding tongue-and-groove means (150, 160, 150', 160'; 250, 260) of another circuit board (100, 100'; 200, 200') in such a way that the air gaps and leakage paths (140, 140'; 240, 240') overlap at least partially. |
