A parking lot lamp supporting multiple light patterns includes a lamp body, a lamp board assembly provided in the lamp body, and a lens plate snapped onto the lamp board assembly. A detachable cover plate is further provided on the lamp body for enclosing the lens plate in the lamp body. A plurality of LED light sources is provided on the lamp board assembly, and the lens plate is provided with lenses one-to-one corresponding to the LED light sources. The lenses are configured to form at least two LED light patterns when the lenses are aligned with and misaligned with the LED light sources. The lamp board assembly and the lens plate are provided with corresponding snaps. By means of the snaps, the lens plate and the lamp board assembly form at least two types of snapping positions, and the snapping positions correspond to the LED light patterns.

Aspects of the disclosure are directed to a multi-functional streetlight. In accordance with one aspect, the multi-functional streetlight includes a polygon shaped support structure, wherein the polygon shaped support structure includes a hexagonal segment, a first trapezoidal segment and a second trapezoidal segment; a lighting system coupled to the first trapezoidal segment; and a base flange configured to couple the hexagonal segment to the ground.

A luminaire assembly comprising: a housing; a moisture intrusion guard including an orifice and at least one slot; a cover coupled to the housing, the cover comprising a retention assembly including at least one protrusion passing through at least one slot of the moisture intrusion guard, the retention assembly locking the cover to the housing.