There is disclosed a manufacturing method of a heat pipe type heat-dissipating device. A rotatable lens curtain is provided with an aperture for the lens of a thermal imager to observe a field of view. If the player selects the card image via a touch panel, a special award corresponding to the selected card image is provided. Forming the incoming coil directly on the surface of the winch drum in this way eliminates any crossing or overlapping of the incoming coil on the previously formed adjacent coils.