Patent ID: 8267564

Claim:
A backlighted sign comprising: a light emitting assembly comprising: a first light emitting unit configured to emit light in a first direction into an edge of a first adjacent light guide plate; a second light emitting unit configured to emit light in a second direction opposite the first direction into an edge of a second adjacent light guide plate; and a third light emitting unit configured to emit light in a direction substantially transverse to the first and second directions into a backlightable sign panel; the first and second adjacent light guide plates; and a backlightable visual content panel; wherein one or more of the light emitting units has an installed position wherein said one or more light emitting units is disposed between the first and second adjacent light guide plates and behind the backlightable visual content panel and wherein said one or more of light emitting units are configured to be slidably insertable and slidably removable from the installed position.