Switch unit and game machine

A switch unit comprising:

• a display part that displays an image in at least one input area;
• a substrate provided above the display part, the substrate comprising:
• a contact, and
• at least one substrate opening configured to allow the image in the at least one input area to be viewed from above;
• an operating button case that covers the substrate, comprising at least one button case opening;
• at least one operating button that has translucency, and that is freely pressed down through the at least one button case opening of the operating button case and causes conduction of the contact by being pressed down;
• light sources mounted on the substrate, that illuminate an area surrounding the at least one operating button;
• and
• a light transmissive water-proof sheet made of an elastic member,
• wherein the light transmissive water-proof sheet is provided between the display part and the at least one operating button to cover the substrate,
• wherein the light transmissive water-proof sheet comprises at least one sheet opening formed thereon at a position facing the at least one input area,
• wherein the light transmissive water-proof sheet comprises:
• a contact conducting portion that faces and comes into contact with the contact of the substrate to cause conduction of the contact by pressing down the at least one operating button,
• a down portion that covers a circumference of the substrate, and
• a light transmitting portion formed on a top surface thereof, that transmits light from the light sources therethrough,
• wherein the light transmissive waterproof sheet comprises one kind of colored elastic member,
• wherein a part of the light transmissive water-proof sheet other than the light transmitting portion formed as a light blocking portion that blocks light from the light sources, and
• wherein the light transmitting portion is thinner than the light blocking portion.