Disclosed herein is a heating apparatus. The heating apparatus includes a plurality of heating bars, electric wires, and connection members. Each of the heating bars has a conductive carbon heating element and an insulating outer coat surrounding the carbon heating element. The electric wires are connected to respective ends of each of the heating bars to enable electricity to flow to the carbon heating elements. Each of the connection members includes insertion portions and at least one seating portion. The insertion portions have respective tip portions which are configured to pass through any of the electric wires and to be inserted into any of the carbon heating elements of the heating bars. The seating portion is provided at the upper ends of the insertion portions to be seated on the electric wire.