| 摘要 |
The present invention consists of the fact that the roof element 5, 11 is curved approximately in the form of a parabola, its less sharply curved zone extending towards the fluorescent tube 6 and the fluorescent tube 6 being covered by a screen in such a manner that essentially indirect light reaches the cabin, a reflector 7, which reflects the light coming from the fluorescent tube 6 preferably towards the roof element 5, 11 being arranged on that side of the fluorescent tube 6 which is remote from the element of the roof 5, 11. In this case, it is especially advantageous that, owing to the removal of half of all the fluorescent tubes, a corresponding 50% of the starter devices is also dispensed with. In this way, not only is a reduction in the manufacturing costs achieved, but also a considerable reduction in weight. <IMAGE>
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