An outdoor cooking apparatus includes a base heating unit and at least one cooking chamber adapted to interlockingly engage the heating unit so that the heating unit and cooking chamber can be carried separately or as a unit. A search area is set for each lane marking with respect to images stored in a image storage part through a window. It is possible to provide a highly hydrophobic substrate such as a heat dissipating body. A crimping device is also disclosed which allows the stent to be exposed to humidity during the crimping process.