Patent ID: 7144138

Claim:
A luminaire comprising: a) a lower portion of square cross-section with four sides and supporting a plurality of fluorescent lamps to illuminate the space therebeneath, b) an upwardly projecting rail portion extending along each side of said lower portion, c) a dome-shape upper portion above said lower portion and having a curved support tube upstanding at each corner of said lower portion to meet at a peak and form a support structure, d) opaque side panels extending between each pair of support tubes and supported thereon to form said dome-shaped upper portion, e) a retainer on each support tube to hold said side panels, f) at least one removable side panel for supporting an advertising sign, each removable side panel being mounted over one of said opaque side panels, g) said upper portion having at least one lamp to illuminate each advertising sign thereon, and h) a top wiring, suspension box at said peak.