US Patent 9285081 LED high bay lighting source

A lighting device includes a housing having an inner surface and outer surface and a plurality of LEDs mounted at the inner surface, the LEDs mounted in a radially symmetrical configuration. The inner surface may be made of or coated with reflective material. The lighting system may further include, individually or in any combination, following: heat sink fins mounted on the outer surface; a reflective plate for reflecting light in a desired direction; a reflective tube for redirecting light from the LEDs. The housing may include a cylindrical section and a conic section.