Abstract: An object is to provide a technique that can make it easy to achieve favorable heat dissipation performance. An electrical junction box includes: 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 blocking member is a solid member, and fills at least the main surface side of the via hole.

Abstract: The configuration of an electrical junction box is simplified and made compact. Provided is an electrical junction box for a vehicle, including a housing that accommodates a high-voltage circuit for high voltages and a low-voltage circuit for low voltages, the electrical junction box including a connection portion for connection to the outside, the connection portion being provided on the housing, wherein the connection portion has both a high-voltage terminal connected to the high-voltage circuit and a low-voltage terminal connected to the low-voltage circuit.

Abstract: An object is to provide a technique that can make it easy to achieve favorable heat dissipation performance. An electrical junction box includes: 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 blocking member is a solid member, and fills at least the main surface side of the via hole.

Abstract: A terminal connection structure is proposed in which a bolt tightening terminal is set on a terminal mounting portion and is fastened with a connecting bolt that is tightened to a nut of the terminal mounting portion. The terminal mounting portion is provided with a displacement limiting portion. If the bolt tightening terminal, set on a terminal mounting portion, is disposed in a proper mounting position in which a bolt insertion hole and a threaded hole are aligned on the same center axis, the bolt tightening terminal is adapted not to interfere with the displacement limiting portion. If the bolt tightening terminal is displaced from the proper mounting position, the bolt tightening terminal is adapted to interfere with the displacement limiting portion to limit the displacement from the proper mounting position.

Abstract: A terminal connection structure is proposed in which a bolt tightening terminal is set on a terminal mounting portion and is fastened with a connecting bolt that is tightened to a nut of the terminal mounting portion. The terminal mounting portion is provided with a displacement limiting portion. If the bolt tightening terminal, set on a terminal mounting portion, is disposed in a proper mounting position in which a bolt insertion hole and a threaded hole are aligned on the same center axis, the bolt tightening terminal is adapted not to interfere with the displacement limiting portion. If the bolt tightening terminal is displaced from the proper mounting position, the bolt tightening terminal is adapted to interfere with the displacement limiting portion to limit the displacement from the proper mounting position.

Abstract: An assemble structure includes: a connection device including a support element on one side of an attachment surface, a first connector on the attachment surface, and a key groove on a support surface of the support element; and the electric device including a casing to be attached to the attachment surface, a second connector on one surface of the casing electrically coupled with the first connector, and a key protruding from the one side of the casing. The electric device is rotatable via a hinge provided by the support element and the casing when one side of the casing faces a support surface of the support element. The key groove on the support surface corresponds to the key on the one side of the casing.