US Patent No. 10,398,019

CIRCUIT STRUCTURE AND ELECTRICAL JUNCTION BOX


Patent No. 10,398,019
Issue Date August 27, 2019
Title Circuit Structure And Electrical Junction Box
Inventorship Takehito Kobayashi, Mie (JP)
Assignee AutoNetworks Technologies, Ltd., Yokkaichi, Mie (JP) Sumitomo Wiring Syste...

Claim of US Patent No. 10,398,019

1. A circuit structure comprising:a circuit board provided with a connection opening;
a bus bar provided on a lower surface side of the circuit board;
an electronic component electrically connected to the bus bar via the connection opening, from an upper surface side of the circuit board;
a heat dissipating member that dissipates heat from the bus bar, and is provided on a surface side of the bus bar that is opposite to the surface that faces the circuit board;
an insulating heat transfer member that transfers heat from the bus bar to the heat dissipating member, is insulating, and is provided between the bus bar and the heat dissipating member; and
a restricting member that restricts movement of the insulating heat transfer member that is caused by an increase in the temperature of the insulating heat transfer member, and is provided between the bus bar and the heat dissipating member,
wherein the restricting member is provided with a heat transfer opening for bringing the insulating heat transfer member into contact with the bus bar, and
the insulating heat transfer member has a smaller area than an opening area of the heat transfer opening, in a state of being in contact with the bus bar.