Switch unit and game machine

A switch unit comprising:

• a display part configured to display an image;
• and
• an operation part provided on the display part in a stacked manner, wherein the operation part includes:
• a plurality of press buttons each having a pressable top surface formed to be transparent;
• a transparent base having a plurality of openings which are formed so as to be spaced from each other in positions corresponding to a display region of the display part, while avoiding a peripheral edge of the display region;
• a transparent substrate provided below the base and mounted with an electronic component;
• and
• a top plate having openings in positions corresponding to the press buttons and provided on the base, with the press buttons mounted thereon, so as to cover the base, and
• each of the press buttons includes, and forms into a unit,
• a button body integrally formed of the top surface, a frame-like stand that is larger than the top surface, and an elastically transformable bending transformation part configured to couple the top surface with the stand,
• a transparent frame-like cover configured to cover an outer periphery of the button body except for the top surface,
• a first sealing part integrally formed with the bending transformation part, and configured to be elastically transformed to adhere to the cover and seal a gap between the button body and the cover, and
• a second sealing part integrally formed with an outer peripheral surface of the cover, and configured to be elastically transformed to adhere to the base and the top plate and seal a gap between the cover and the base,
• the press button being mounted on the transparent substrate via the opening provided in the base.