Patent ID: 7805957

Claim:
A top plate structure for an air conditioner including a body casing for accommodating a fan, a fan motor, and a heat exchanger, the top plate structure comprising: a top plate forming a top surface of the body casing and supporting the fan and the fan motor; and parallel reinforcement ribs each having a trapezoidal cross-section and a non-parallel reinforcement rib having a trapezoidal cross-section arranged on the top plate, wherein the parallel reinforcement ribs are arranged in parallel, and the non-parallel reinforcement rib includes a parallel portion extending parallel to the parallel reinforcement ribs and a non-parallel portion extending from an end of the parallel portion at a predetermined angle, the predetermined angle being in the range of forty-five to ninety degrees, the parallel reinforcement ribs are formed at outermost positions and at a middle position of the top plate, and the non-parallel reinforcement rib is formed between the parallel reinforcement ribs.