The present invention relates to a lighting apparatus comprising P-N junction light-emitting devices. The lighting apparatus comprising P-N junction light-emitting devices includes: a power transmission board in which a plurality of boundaries are defined; a plurality of P-N junction light-emitting devices disposed within the plurality of boundaries and divided into a plurality of groups, respectively; and a first switch disposed on the power transmission board, the first switch being turned on when the supplied alternating current is a first voltage so as to enable the P-N junction light-emitting devices of the first group disposed within each of the boundaries to emit light, and being turned off when a second voltage greater than the first voltage is applied so as to enable the P-N junction light-emitting devices of the second group, disposed within each of the boundaries and connected to those of the first group in series, to emit light.
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