A light fixture is provided with a light seat including four spaced, upward inclined sides and holes arranged along a bottom edge of each side, insulators fastened in the holes respectively, LED arrays each including LEDs, and wires each passing through the hole to interconnect a power source and the LED array; a lampshade secured to the light seat; and a centrally raised cover comprising a threaded fastening assembly for securing the cover to the light seat, and through holes disposed along edges as heat sinks which are in close proximity to a predetermined number of the LED arrays.