Heat-dissipating waterproof structure

A heat-dissipating waterproof structure provided between a top part of a casing to accommodate a heat source and the heat source, comprising:

• a slope part that guides a liquid having entered into the casing through an outlet provided in at least one of an upper part of a side part of the casing and the top part;
• and
• a discharge part that guides the liquid having been guided by the slope part to be discharged to outside of a space where the heat source is accommodated,
• wherein the slope part has at least a sloping surface which gradually becomes higher the further it is from being immediately above the heat source,
• the slope part is a plate-like member having the sloping surface and extending from one to another one of two opposite side parts of the casing,
• the discharge part is a plate-like member extending from one to another one of the two opposite side parts, and
• a space above the discharge part is connected to outside of the space where the heat source is accommodated through an outlet provided in at least one of an upper part of the two opposite side parts.