Abstract: The invention relates generally to illuminated signs (100) having multiple point light sources such as light emitting diode arrays as the illumination source for legend-bearing face panels and particularly to diffuser structure mountable in relation to such an array for facilitating an even distribution of light within such a sign to improve illumination of the typically translucent legend disposed on such a face panel. In particular, the invention employs a clear diffuser holder (120) that is secured to the inside surface of el the face panel thereby providing a means of removeably attaching a diffuser (130). The invention permits interchangeably employing diffusers of different colors while providing resistance to vandalism.

Abstract: The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).

Abstract: The invention provides a troffer-based lighting arrangement (100) comprising end plates (1100) and a lighting unit (1200) configured between said end plates (1100), wherein the lighting unit (1200) comprises a grounding point (1207) and head ends, wherein the end plates (1100) are associated with the respective head ends via connectors (1300), wherein the lighting unit (1200) and end plates (1100) are in physical contact with each other for providing grounding continuity between the lighting unit (1200) and the end plates (1100), and which connectors (1300) comprise head end locking tabs and end plate locking slots (1103), wherein the locking tabs reside in the respective locking slots (1103).