Systems and methods for collapsible lighting fixtures are disclosed. In aspects, a horticultural luminaire 100 has first and second light fixtures 110, 120 coupled in movable relation between storage and deployed positions by a coupling element 130 applying a retarding torque. Coupling element can be coupling shaft 250 providing friction, or friction hinge cartridge 260. In aspects, hinge 130 has ledge surfaces 218, 228 adjacent rotational hinge faces 216, 226 and extending transverse the rotational plane. In aspects, a horticultural luminaire has an articulated cableway extending through hinge 130 coupling light fixtures 110, 120 and guiding a cable entering from the exterior into cable passageways in light fixtures 110, 120, thereby lessening a cable pinch point during rotation and deployment.

Systems and methods for collapsible lighting fixtures are disclosed. In aspects, a horticultural luminaire 100 has first and second light fixtures 110, 120 coupled in movable relation between storage and deployed positions by a coupling element 130 applying a retarding torque. Coupling element can be coupling shaft 250 providing friction, or friction hinge cartridge 260. In aspects, hinge 130 has ledge surfaces 218, 228 adjacent rotational hinge faces 216, 226 and extending transverse the rotational plane. In aspects, a horticultural luminaire has an articulated cableway extending through hinge 130 coupling light fixtures 110, 120 and guiding a cable entering from the exterior into cable passageways in light fixtures 110, 120, thereby lessening a cable pinch point during rotation and deployment.

Apparatus and associated methods relate to an expandable light string that can span various length dimensions. The expandable light string has a flexible backbone cable, a plurality of lighting elements and single expandable member. The flexible backbone cable has a plurality of conductive wires extending and providing electrical conduction along a length between a first end and a second end of the flexible backbone cable. Each of the plurality of lighting elements is conductively coupled to at least two of the plurality of conductive wires of the flexible backbone cable so as to illuminate in response to receiving electrical operating power therefrom. The single expandable member is coupled at a plurality of coupling locations to the flexible backbone cable along the length thereof. The single expandable member is configured to expand or contract so as to change a length dimension of the expandable light string.

Apparatus and associated methods relate to an expandable light string that can span various length dimensions. The expandable light string has a flexible backbone cable, a plurality of lighting elements and single expandable member. The flexible backbone cable has a plurality of conductive wires extending and providing electrical conduction along a length between a first end and a second end of the flexible backbone cable. Each of the plurality of lighting elements is conductively coupled to at least two of the plurality of conductive wires of the flexible backbone cable so as to illuminate in response to receiving electrical operating power therefrom. The single expandable member is coupled at a plurality of coupling locations to the flexible backbone cable along the length thereof. The single expandable member is configured to expand or contract so as to change a length dimension of the expandable light string.

A detachable support is provided. The detachable support includes a first arm having a first connection portion, a second arm having a second connection portion, and a frame. The frame has a first end portion and a second end portion, which are respectively hinged to the first arm and the second arm. The first connection portion and the second connection portion are operable to be inserted and fixed into two grooves respectively, and the two grooves are defined in a housing to be mounted. The first arm has a hole, the housing to be mounted is provided with a spring loaded bolt, and the spring loaded bolt is operable to be inserted into the hole to lock the first arm. No tool is required throughout installation and removal processes of the detachable support according to the present disclosure, thereby improving the efficiency of the installation and removal processes.

A height adjustable lamp assembly includes a frame, a reel supported by the frame, a canopy surrounding the frame and the reel, an electrical cord wound around the reel, and a lamp. The frame includes a mounting plate configured to couple to a mounting location and a base plate coupled to the mounting plate. The base plate defines a cord aperture. A lower end of the electrical cord extends through the cord aperture. The lamp is coupled to the lower end of the electrical cord. Winding the electrical cord around the reel or paying out the electrical cord from the reel adjusts a height of the lamp.

A height adjustable lamp assembly includes a frame, a reel supported by the frame, a canopy surrounding the frame and the reel, an electrical cord wound around the reel, and a lamp. The frame includes a mounting plate configured to couple to a mounting location and a base plate coupled to the mounting plate. The base plate defines a cord aperture. A lower end of the electrical cord extends through the cord aperture. The lamp is coupled to the lower end of the electrical cord. Winding the electrical cord around the reel or paying out the electrical cord from the reel adjusts a height of the lamp.

Disclosed is a device for adjusting the height of a suspended lamp, which includes at least a guide roller combination, an operating cord, a limiting member, a controlling member and an adjusting shell, the adjusting shell being connected to the lamp, and the guide roller combination and the limiting member being arranged in the adjusting shell, a circumferential end surface of the guide roller combination includes an inwardly recessive roller groove in a radial direction thereof, the operating cord is arranged within the roller groove, one end of the operating cord exits through the adjusting shell and is fixed at an upper end in a lamp moving area range, the other end of the operating cord exits through the adjusting shell to become a free end.

Disclosed is a device for adjusting the height of a suspended lamp, which includes at least a guide roller combination, an operating cord, a limiting member, a controlling member and an adjusting shell, the adjusting shell being connected to the lamp, and the guide roller combination and the limiting member being arranged in the adjusting shell, a circumferential end surface of the guide roller combination includes an inwardly recessive roller groove in a radial direction thereof, the operating cord is arranged within the roller groove, one end of the operating cord exits through the adjusting shell and is fixed at an upper end in a lamp moving area range, the other end of the operating cord exits through the adjusting shell to become a free end.

A downlight fixing structure is provided. The downlight fixing structure comprises a housing and a spring. The housing is for accommodating light components. The housing has an insertion lock structure on a side of the housing. The spring comprises a coil portion, a head portion, and a tail portion. The coil portion, the head portion and the tail portion are formed by the same metal wire. The head portion is inserted into the insertion lock structure.