Patent ID: 11949219
Assignee: SUMITOMO WIRING SYSTEMS, LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. An electrical junction box comprising:
a circuit substrate in which a via hole is formed;
a blocking member that blocks the via hole;
a heat-transfer member provided in a region of a main surface of the circuit substrate in which the via hole is formed; and
a heat dissipation member that comes into contact with the heat-transfer member from the opposite side to the circuit substrate,
wherein the circuit substrate has a terminal connection conductor pattern that is connected to a terminal of an electrical component that is implemented on the main surface,
the terminal connection conductor pattern has a portion that spreads lateral to the electrical component,
the via hole is provided so as to pass through the portion of the terminal connection conductor pattern that spreads lateral to the electrical component,
the blocking member is a solid member, and fills at least the main surface side of the via hole,
the heat-transfer member is a viscous body or a viscous adhesive that has been solidified,
the heat dissipation member includes a protruding wall that protrudes toward the main surface, and
the protruding wall is provided so as to protrude from the main surface toward the portion of the terminal connection conductor pattern that spreads lateral to the electrical component and a leading end surface of the protruding wall is in contact with the heat-transfer member.