| 摘要 |
<p>The signal unit (2) for mounting on a vehicle roof (1) consists of at least two part structures are fitted above the roof. They are both spaced out from the roof for the greater part of there are flows surfaces. The foremost part structure is in the form of a streamlined element (4), which divides the oncoming air, and guiding it partly above and partly below the signal unit.</p> |
