A lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements is provided. The application also relates to a headlight.

A lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements is provided. The application also relates to a headlight.

In an example embodiment, a plant light reflection apparatus may comprise two opposing reflector panels configured to reflect light, wherein each reflector panel may comprise one or more pieces of reflection material. A reflector support apparatus may be configured to support the at least two opposing reflector panels, and may comprise a central section configured to accept one or more plants. The bottom major edges of the one or more pieces of reflection material of the two opposing reflector panels may be disposed in proximity to main stems of the one or more plants in the central section, and to reflect light thereon.

In an example embodiment, a plant light reflection apparatus may comprise two opposing reflector panels configured to reflect light, wherein each reflector panel may comprise one or more pieces of reflection material. A reflector support apparatus may be configured to support the at least two opposing reflector panels, and may comprise a central section configured to accept one or more plants. The bottom major edges of the one or more pieces of reflection material of the two opposing reflector panels may be disposed in proximity to main stems of the one or more plants in the central section, and to reflect light thereon.

A luminaire (61) is disclosed with a close coupled ballast (62) having a support arm (66) from which is suspended or hung a reflector, and preferably a variable focus reflector (41), having either a single ended lamp (3) or double ended lamp (23). The luminaire (61) is supported from a greenhouse rafter (9) by filaments (10, 11) which are connected one to the ballast (62) and the other to the free end of the support arm (66). In one embodiment the arm (66) is connected to a rigid side plate (64) which is mounted on the ballast (62). In another embodiment the arm (66) is connected to a side plate (164) which is hinged. The arrangement enables flimsy reflectors (41) to be close coupled with electronic ballasts in a way which minimises Radio Frequency Interference (RFI).

A luminaire (61) is disclosed with a close coupled ballast (62) having a support arm (66) from which is suspended or hung a reflector, and preferably a variable focus reflector (41), having either a single ended lamp (3) or double ended lamp (23). The luminaire (61) is supported from a greenhouse rafter (9) by filaments (10, 11) which are connected one to the ballast (62) and the other to the free end of the support arm (66). In one embodiment the arm (66) is connected to a rigid side plate (64) which is mounted on the ballast (62). In another embodiment the arm (66) is connected to a side plate (164) which is hinged. The arrangement enables flimsy reflectors (41) to be close coupled with electronic ballasts in a way which minimises Radio Frequency Interference (RFI).

The application relates to a lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements. The application also relates to a headlight.

The application relates to a lighting device, comprising a housing, a planar arrangement of lamps, which are arranged in the housing, and a plate device, which is received on the housing, wherein a housing rear wall is formed by the plate device, the plate device has a circuit board, on which an electric circuit associated with the lamps is arranged, and the plate device has a heat sink device for passive cooling, which is formed by pin-type cooling elements. The application also relates to a headlight.

A light enhancing system is disclosed which extends the available area for capturing light from a source and adjustably increases the light concentration on a subject being lit. Embodiments may be beneficial to applications including grow lighting. One or more reflector panels may be detachably coupled to a lighting unit by a quick-connect fastener on the end of a flexible arm. Examples of quick-connect fasteners include threaded ends, press-fit ends, and magnetic ends. In some embodiments, the reflector panel may be retrofit onto a conventional lighting unit.

A light enhancing system is disclosed which extends the available area for capturing light from a source and adjustably increases the light concentration on a subject being lit. Embodiments may be beneficial to applications including grow lighting. One or more reflector panels may be detachably coupled to a lighting unit by a quick-connect fastener on the end of a flexible arm. Examples of quick-connect fasteners include threaded ends, press-fit ends, and magnetic ends. In some embodiments, the reflector panel may be retrofit onto a conventional lighting unit.