Patent ID: 7733647

Claim:
A waterproof casing for a power supply comprising: a lower casing having an opening; an upper casing corresponding to and being detachably mounted on the opening of the lower casing and having a top having an inner surface; two sidewalls; an inlet end wall; an outlet end wall; a first transverse wall being formed on the inner surface of the top between the sidewalls; an inlet cavity being formed between the first transverse wall, the inlet end wall and the sidewalls of the upper casing and having an opening; a second transverse wall being formed on the inner surface of the top between the sidewalls adjacent to the first transverse wall; an outlet cavity formed between the second transverse wall, the outlet end wall and the sidewalls of the upper casing and having an opening; at least one inlet being formed through the upper casing and communicating with the inlet cavity; and at least one outlet being formed through the upper casing and communicating with the outlet cavity; an inlet cover detachably sealing the opening of the inlet cavity and having an upper surface; an isolating enclosing wall being formed on and protruding from the upper surface of the inlet cover, surrounding a fan cavity and disconnecting from the inner surface of the top of the upper casing; and an air hole being formed through the inlet cover and communicating with the fan cavity; and an outlet cover detachably sealing the opening of the outlet cavity and having an air hole being formed through the outlet cover and communicating with the outlet cavity and has an edge; and a surrounding enclosing wall being formed along and protruding upwardly from the edge of the air hole of the outlet cover and disconnecting from the inner surface of the top of the upper casing.