Images are displayed in response to a video signal using a light emitting assembly having one or more optically transmissive substrates, films or sheets, each having at least one pattern of optical elements on or in the substrates, films or sheets. Holes in the carrier sheet, which serve to anchor the guard, preferably have an effective diameter of at least about 1 to allow typical backfill materials to pass through. An outlet spout can be fitted to the securing body with a multi-faced seating aperture so that it does not turn.