A power supply apparatus includes a storage battery, a power part and a solar battery part. Using said ticket, the receiving means can take into account the cost of executing said set of data thereby simplifying the billing. The LED is electrically connected to the insulation circuit, and a main base of the LED installs a metal conducting plate for conducting the heat produced by the LED to the heat dissipating module. The exposed alumina coating layer is the result of wet blasting a titanium-containing outer coating layer region from the surface of the alumina-containing base coating layer region.