Patent ID: 8995130
Filing Date: 2015-03-31
Classification: H05K

Abstract:
1. A power supply unit comprising: a printed circuit board on which two or more different-shape components having mutually-different heights provided when the components are mounted on the printed circuit board, wherein at least some of the different-shape components respectively include semiconductor devices, the different-shape components are two or more types of the different-shape components wherein the two or more types of the different-shape components include specific different-shape components whose temperatures rise over a predetermined temperature when being operated, the printed circuit board has two or more mounting surfaces including a single designated mounting surface, and the semiconductor devices and the different-shape components are mounted on the designated mounting surface; a housing that houses the printed circuit board and comprises a cooling member for cooling a first space, formed in the housing, between the designated mounting surface of the printed circuit board and an opposed surface of the housing, wherein the opposed surface is opposed to the designated mounting surface, the cooling member is arranged at a part of the opposed surface, the part of the opposed surface projects toward the semiconductor devices, and the opposed surface is opposed to the two or more types of the different-shape components; and insert bus bars which are partly or entirely arranged between the designated mounting surface and the opposed surface to electrical connect circuit components on the designated mounting surface, the circuit components including the semiconductor devices, wherein: the specific different-shape components are located to directly or indirectly be in touch with the cooling member or located near the cooling member, and the opposed surface has one or more projections projecting toward the different-shape components.