1. An LED lighting apparatus having a natural convection-type heat dissipation structure, the LED lighting apparatus comprising:a heat sink coupled to a back surface of a PCB to which a plurality of light emitting diode (LED) devices is mounted, the heat sink absorbing heat radiated from the LED devices,
wherein center portions of the heat sink and the PCB are provided with respective openings serving as a convection hole that induces natural convection such that hot air under the heat sink rises along with hot air heated by heat radiated from an upper surface of the heat sink, and surrounding cooler air is supplied to the upper surface of the heat sink and to around the LED devices,
wherein a power supply block for supplying electric power to the LED devices is mounted on an upper surface of the heat sink, the power supply block has a width smaller than a size of the convection hole such that the power supply block crosses over a center portion of the convection hole without completely blocking the convection hole, side end portions of the power supply block are bent downward such that a lower surface of the power supply block is spaced from the convection hole, and the side end portions, which are bent downward, are coupled to the upper surface of the heat sink,
wherein the side end portions of the power supply block are provided with respective fixing members, and an installation bracket is connected to the fixing members by hinges.