| 主权项 |
1. A vehicle audio apparatus comprising a casing defined by external walls including substantially parallel lateral walls and substantially parallel transversal walls, and containing at least one electrical component mounted on at least one printed circuit board extending substantially in parallel adjacent a first of said transversal walls, at least one of said electrical components producing heat, and comprising cooling means which include:
at least one fan arranged in a first lateral wall of said casing, a cooling opening arranged in a second lateral wall opposite to the first lateral wall, an internal cooling plate forming a heat sink and which is adjacent to said electrical component producing heat, said cooling plate extending substantially in parallel to said first transversal wall above said printed circuit board on which said electrical component producing heat is mounted, said cooling plate having a shape optimized for guiding the air flow between the fan and the cooling opening, and an internal cover plate which extends over the cooling plate, the air flowing between the cover plate and the cooling plate, wherein said cooling plate comprises longitudinal fins which extend along the air flow, and wherein the cooling plate face facing the printed circuit board comprises contact surfaces which are in contact with corresponding surfaces of the electrical components producing heat. |
