Electric junction box
AssigneeSumitomo Wiring Systems, Ltd.
InventorYukinori Kita
Life of this patent
Estimating the term…
Abstract
A heat sink in an electric junction box has thermal diffusion portions having one of convex and concave shapes on the surface. The structure enlarges a surface area of the heat sink compared to a configuration in which a surface has no concavity or convexity, thereby allowing fast heat dissipation from the surface of the heat sink to the exterior of the junction box. Further, the heat sink has the thermal diffusion portions on the entire plate surface. The structure enlarges the surface area of the heat sink compared to a configuration in which the thermal diffusion portions are provided to only a portion of the surface, thereby further enhancing the heat dissipation.
Claims20
An electric junction box comprising:
- a circuit including a control circuit board and a bus bar, said control circuit board having conductive circuits formed in and electronic components mounted on a first one of front and rear surfaces thereof and said bus bar provided on a second one of the front and rear surfaces of said control circuit board;
- a heat sink provided on said bus bar on a surface opposite to the surface facing said control circuit board through an insulating layer, said heat sink including a planar member including thermal diffusion portions having one of convex and concave shapes on a surface opposite to the surface contacting said bus bar;
- and
- a case containing said circuit and said heat sink.
A heat sink for a circuit including a control circuit board having conductive circuits formed in and electronic components mounted on a first one of front and rear surfaces thereof and a bus bar provided on a second one of the front and rear surfaces of said control circuit board, said heat sink provided on the bus bar on a surface opposite to the surface facing the control circuit board through an insulating layer, said heat sink comprising:
- a planar member including thermal diffusion-portions having one of convex and concave shapes on a surface opposite to the surface contacting the bus bar.
A heat sink for a circuit including a control circuit board having conductive circuits formed in and electronic components mounted on a first one of front and rear surfaces thereof and a bus bar provided on a second one of the front and rear surfaces of said control circuit board, said heat sink provided on the bus bar on a surface opposite to the surface facing the control circuit board through an insulating layer, said heat sink comprising:
- a planar member including thermal diffusion portions having a substantially planar shape and projecting from a surface opposite to the surface contacting the bus bar.
Dependencies are inferred from the claim text.