US Patent 11466830 LED simulated flame device and LED simulated candle

An LED simulated flame device includes a semi-transparent diffusion cover in a candle flame shape, a light-emitting lamp plate, and a control circuit module. The light-emitting lamp plate includes a PCB substrate, and several LED chips shading between brightness and darkness at random, and the LED chips include an up-lighting LED chip that is located on a top edge of the PCB substrate, emits light upward, and is configured to project light and shadows onto a middle upper portion of the diffusion cover, two mid-lighting LED chips that emit light toward a front surface of the diffusion cover, are configured to project light and shadows onto a middle portion of the diffusion cover, and are located on front and back surfaces of the PCB substrate, and a down-lighting LED chip that corresponds to a bottom portion of the diffusion cover, emits light upward, and is configured to supplement light.