| 摘要 |
The lighting device has an essentially flat circuit board (1) with a defined number of light emitting diodes (5) electricall connected to the circuit board. The circuit board is curved in a light region (3) through a radiation angle (delta) of at least degrees, preferably. 180 to 360 degrees, and the light emitting diodes are mounted on the curved circuit board so that a substantially homogeneous radiation characteristic is produced over the radiation angle far from the lighting device. |
