| 摘要 |
A lighting unit ( 1 ) preferably providing backlighting for a flat display device ( 2 ) and operating substantially in a vertical working position. The lighting unit ( 1 ) includes lamps ( 3 ), which are in thermal contact with a heat-conducting wall ( 5 ) of a hollow box ( 6 ). The lamps ( 3 ) make thermal contact with the heat-conducting wall ( 5 ) on the side opposite the light-emitting side of the lighting unit ( 1 ). The hollow box ( 6 ) is provided with a rear wall ( 8 ) that runs essentially parallel to the heat-conducting wall ( 5 ) and has openings ( 9 ) which are distributed across the area thereof. A top sidewall ( 10 ) and a bottom sidewall ( 11 ) are provided with additional openings ( 12, 13 ) in zones that lie closer to the rear wall ( 8 ). Preferably, the sidewalls do not have openings in zones located closer to the heat-conducting wall ( 5 ) than the additional openings ( 12, 13 ). |
