| 摘要 |
<p>The device has an information board including fixed displays (2) arranged on two translucent plates (1, 8), where the displays are illuminated by light sources (4) i.e. LED, arranged in front sides of the plates. A control device switches on or off the light sources of the plates that are arranged with the displays one behind the other. A translucent screen is provided between the light sources of the plates that are arranged based on evacuation details that is represented on the displays.</p> |
