US Patent 7921585 Fireplace simulator with glowing ember effect

A simulator for providing a user with a simulated burning log display providing moving patterns of light which simulate a flickering flame image. The flame image is generated by rotating a shaft with a helically wound light array such that the lights reflect off a mirror with flame shaped reflecting areas onto a partially transparent screen to give the impression to a viewer of flickering flames appearing on a front side of the screen and behind a non-burning pile of logs. The logs have flame colored light transmissive regions which are illuminated by an array of ember LED's under the control of circuitry which generates apparently randomly varying illumination levels, to thereby create a glowing ember effect.