A light-emitting diode luminescence apparatus, comprising: a rectification circuit unit to receive an alternating current power voltage and rectify the alternating current power voltage to output a unidirectional ripple voltage; a plurality of LED units (13-1,..., 13-N) connected in series, each of the plurality of LED units comprising an anode and a cathode, the plurality of LED units being configured to receive the unidirectional ripple voltage; a plurality of switch units (S1,..., SN), one end of each being connected to the cathode of one of the plurality of LED units; a plurality of constant current control circuit units (15-1,..., 15-N), one end of each being connected to an another end of a respective switch unit (S1,..., SN) to receive a current from the respective switch unit (S1,..., SN), each of the constant current control circuit units (15-1,..., 15-N) being configured to output a current control signal to the respective switch unit (S1,..., SN) to control a magnitude of the received current to have a specific value; and a current comparison unit to receive currents flowing from the plurality of switching units, and generate a plurality of switching control signals for the respective switch units (S1,..., SN) to sequentially drive the plurality of constant current control circuit units (15-1,..., 15-N), characterized in that the plurality of LED units (13-1,..., 13-N) comprises a first LED unit to N-th LED unit (13-1,...., 13-N) and the first LED unit, which is connected to the rectification circuit unit and which is adapted, in operation, to start emitting light first, has the smallest forward voltage (Vf) compared to others. a rectification circuit unit to receive an alternating current power voltage and rectify the alternating current power voltage to output a unidirectional ripple voltage; a plurality of LED units (13-1,..., 13-N) connected in series, each of the plurality of LED units comprising an anode and a cathode, the plurality of LED units being configured to receive the unidirectional ripple voltage; a plurality of switch units (S1,..., SN), one end of each being connected to the cathode of one of the plurality of LED units; a plurality of constant current control circuit units (15-1,..., 15-N), one end of each being connected to an another end of a respective switch unit (S1,..., SN) to receive a current from the respective switch unit (S1,..., SN), each of the constant current control circuit units (15-1,..., 15-N) being configured to output a current control signal to the respective switch unit (S1,..., SN) to control a magnitude of the received current to have a specific value; and a current comparison unit to receive currents flowing from the plurality of switching units, and generate a plurality of switching control signals for the respective switch units (S1,..., SN) to sequentially drive the plurality of constant current control circuit units (15-1,..., 15-N), characterized in that the plurality of LED units (13-1,..., 13-N) comprises a first LED unit to N-th LED unit (13-1,...., 13-N) and the first LED unit, which is connected to the rectification circuit unit and which is adapted, in operation, to start emitting light first, has the smallest forward voltage (Vf) compared to others.