To provide an LED lamp unit having an LED lamp unit structure in which at maintenance work, a lamp head is separated from a lamp base by helical rotation to replace an LED lamp or a lamp fixing partition and a panel are removed to easily carry out maintenance of a power supply line.

The LED lamp unit mainly includes a lamp cover having one set of partition fixing blocks disposed on the inner peripheral edge of the lamp cover and one set of panel fixing blocks located below the partition fixing blocks, a lamp fixing partition which is placed inside the lamp cover, fixes an LED lamp, and has side edges fixed to the partition fixing blocks, and a panel which is placed inside the lamp cover, has side edges fixed to panel fixing blocks, and has an opening drum through which the bottom end of the LED lamp passes.