MODULAR LIGHT-EMITTING DIODE PROJECTOR Russian patent published in 2014 - IPC F21S13/00 

FIELD: physics, optics.

SUBSTANCE: invention relates to lighting engineering and specifically to light-emitting diode (LED) optical units used as a light source in projector-type lighting devices, primarily used to illuminate railway tracks and track spacing. In the modular LED projector, having a protective housing in which LED modules and a power supply unit are mounted, each LED module has an optical system with LED sectors which include LEDs, lenses and heat-conducting aluminium-based printed-circuit boards, wherein the LEDs are mounted at the focal point of the lens, the modular LED projector further including a cold backup LED module and vertical and horizontal position controllers of the optical system, and the LED modules are mounted on a support base which is made in form of a single even component or in form of a welded frame on a base with aluminium heatsinks, and a voltage converter is placed either directly in the housing of the heatsink of the module or in a separate housing, each sector further including detachable focusing assemblies that are unique for each LED, closing plates, wherein the focusing assemblies consist of an aspherical lens and a polycarbonate-based holder.

EFFECT: design of a modular LED projector with cold backup of sectors with maximum coaxiality of the direction of optical axes, providing different levels of light, providing heat removal and adjustment of the inclination of the projector, providing electrical safety and improved repairability.

7 cl, 3 dwg