LED display with shades to shield LEDs from external light

摘要

A LED display 7 is provided, preferably for a traffic signal or a traffic light. The display 7 has a plurality of louvres 10, preferably inclined at an angle above the horizontal, which shield the LEDs 8 from phantom illumination by sunlight. At least the lower surface of the louvres 10 is reflective so that any light rays which are emitted from a LED 8 in an upward direction are deflected down below the horizontal to e.g. traffic at ground level. In an alternative arrangement a plurality of honeycombed shaped shading elements (11, Fig.6) may be used.