Abstract: A circuit assembly that includes a heat generator; a circuit board, which has a conduction path, and to which the heat generator is mounted, a heat dissipating member arranged facing the circuit board, an insulating film arranged in a region that is overlapped by the heat generator between the circuit board and the heat dissipating member, an adhesive or sticky first heat conductor that is arranged between the circuit board and the insulating film and is in contact with the circuit board and the insulating film, and an adhesive or sticky second heat conductor that is arranged between the insulating film and the heat dissipating member and is in contact with the insulating film and the heat dissipating member.

Abstract: A circuit structure including: an electronic component including a lower surface electrode; a circuit board including a first circuit and a second circuit; and a thermally conductive conducting member to be disposed between the lower surface electrode of the electronic component and the first circuit. The thermally conductive conducting member includes an electronic component connection portion to be conductively connected to the lower surface electrode of the electronic component, a first circuit connection portion to be conductively connected to the first circuit, and a second circuit connection portion to be conductively connected to the second circuit.

Abstract: A circuit structure includes a circuit board mounted with electronic components, a heat release member overlaid by the circuit board and releasing heat of the circuit board, a screw screwing the circuit board to the heat release member, and a spacer on which an insertion hole is formed to insert a shaft portion of the screw and the spacer is arranged between the circuit board and the screw to receive the screw. The spacer includes a board presser pressing the circuit board and a heat release member presser pressing the heat release member when the circuit board is screwed to the heat release member.

Abstract: An electrical connection box includes a bus bar, a case to which the bus bar is fixed, a terminal that is connected to the bus bar, a fixing member that fixes a connection portion at which the terminal and the bus bar are connected to each other, and a base member that holds the fixing member. The fixing member and the base member are disposed at a position at which the fixing member and the base member overlap the connection portion of the bus bar, and when the connection portion at which the terminal and the bus bar are connected to each other is fixed, the base member moves in a direction in which the base member comes into contact with the bus bar.

Abstract: An electrical junction box includes: a circuit board having a mounting face on which an electronic component having a main body and a connecting portion is mounted; and a case accommodating the circuit board, wherein the case includes a bonding case part having a bonding face to which a face of the circuit board opposite to the mounting face is bonded, and a pressing case part assembled to the bonding case part and having a pressing portion that presses the main body of the electronic component toward the bonding face.

Abstract: Provided is a circuit assembly that includes: a circuit board that has a connection opening; a plurality of busbars that are laid on one surface side of the circuit board; a coil that includes a main portion and a plurality of lead terminals, the lead terminals being connected to the plurality of busbars exposed through the connection opening; and a heatsink that is laid, via an adhesive agent, on surfaces of the plurality of busbars that face away from the circuit board. The circuit board is provided with a substrate through-hole in the vicinity of the connection opening, and the plurality of busbars are provided with a busbar through-hole at the position that corresponds to the substrate through-hole.

Abstract: An electrical junction box includes a circuit assembly in which a coil assembly having a main body is mounted on a mounting surface of a circuit board, a case for accommodating the circuit assembly, and a heat sink provided on a side of the circuit board that is opposite to the mounting surface. The case has a top plate that covers the circuit assembly from the mounting surface side and is in thermal contact with the main body of the coil assembly.

Abstract: Provided is a circuit assembly that includes a circuit board that has an opening, a plurality of busbars that are laid on one surface side of the circuit board, a coil that has a main portion 16 and a plurality of lead terminals, the lead terminals being connected to the plurality of busbars that are exposed through the opening, and a heatsink that is laid, via an adhesive agent, on surfaces of the plurality of busbars that are opposite to the circuit board. Cut-out portions for evacuating the adhesive agent are formed at edges of the plurality of busbars that are opposite to each other in the opening.

Abstract: A circuit structure 10 disclosed in the present specification includes: a circuit board 20 provided with a wiring portion 26; a conductor body (conductor plate 30) adhered to one side of the circuit board 20; and a terminal 40 that electrically connects the wiring portion 26 of the circuit board 20 and the conductor body. The terminal 40 includes a relay connection portion 44 between a portion connected to the wiring portion 26 and a portion connected to the conductor body, and the relay connection portion 44 protrudes past the wiring portion 26, on the other side of the circuit board 20.

Abstract: An electrical junction box includes: a circuit board in which a conductive path is formed on an insulating plate; a connector housing having a hood portion in the shape of a hood and an inner wall that closes the hood portion, wherein a terminal insertion hole; is provided in the inner wall; a connector terminal that is inserted from a rear face of the connector housing into the terminal insertion hole; through the inner wall and projects into the hood portion; a base member to which the connector housing is fastened, and that is different from the circuit board; and a screw that fastens the connector housing to the base member in a state where the connector terminal is inserted into the terminal insertion hole. The connector housing includes a catch portion that catches the circuit board when the connector housing is fastened with the screw to the base member.

Abstract: An electrical junction box includes a circuit assembly including a circuit board and a conductive plate, a engaging component (terminal block), a frame including an installation portion to which the engaging component is installed. A first engaging portion (first bus bar) is formed on one end side of the circuit assembly, and a second engaging portion (second bus bar) is formed on another end side of the circuit assembly. The frame includes a first engaged portion (receiving portion) that is engaged with the first engaging portion and receives the one end side of the circuit assembly. The engaging component includes a second engaged portion (auxiliary receiving portion) that is engaged with the second engaging portion and receives the other end side of the circuit assembly.

Abstract: An electrical junction box includes a circuit structure, a case main body made of a synthetic resin and having an accommodating portion that accommodates the circuit structure, and a cover 30 made of a metal and that is attached to the case main body, covering the accommodating portion thereof. The cover has a covering wall that covers the accommodating portion of the case main body and a side wall that is continuous with the covering wall and that is disposed around the case main body. The case main body is provided with an abutment portion that abuts on a portion of the side wall of the cover, but not on an end portion of the side wall that is located on the side facing away from the covering wall.

Abstract: Provided is a circuit assembly that includes a circuit board that has a connection opening, a plurality of busbars that are laminated on one surface side of the circuit board via an adhesive sheet, a coil that has a main portion and a plurality of lead terminals, the coil being arranged on the other surface side of the circuit board by the lead terminals being connected to the plurality of busbars that are exposed through the connection opening, and a heatsink that is laminated on a side of the plurality of busbars that is opposite to the circuit board via an adhesive agent. The adhesive sheet has sheet openings through which the plurality of busbars are exposed and the plurality of lead terminals are connected to the plurality of busbars, the adhesive sheet covering a gap between the plurality of busbars, the gap being located in the connection opening.

Abstract: An electrical junction box includes an insulating substrate, a bus bar that is bonded to the insulating substrate, and a reinforcement plate that is bonded to a region of the insulating substrate to which the bus bar is not bonded. The reinforcement plate includes a through hole that allows passage of a shaft portion of a screw. A heat-dissipating member is stacked on a surface of the reinforcement plate opposite to the insulating substrate, and includes a screw hole into which the screw is screwed. A retaining member retains the respective positions of the insulating substrate, the bus bar, and the reinforcement plate, and the reinforcement plate includes an engagement portion that aligns the through hole and the screw hole by engaging with the retaining member.

Abstract: A circuit assembly is provided with a circuit unit that includes an electrically conducting path on which electronic components are mounted, a heat discharging member that is placed on the circuit unit, and is configured to discharge heat of the circuit unit, and a spacer that is disposed between the circuit unit and the heat discharging member. The spacer is provided with a main portion that is disposed between the circuit unit and the heat discharging member, and accommodating portions that accommodate a part of the circuit unit.

Abstract: A circuit structure includes a circuit board mounted with electronic components, a heat release member overlaid by the circuit board and releasing heat of the circuit board, a screw screwing the circuit board to the heat release member, and a spacer on which an insertion hole is formed to insert a shaft portion of the screw and the spacer is arranged between the circuit board and the screw to receive the screw. The spacer includes a board presser pressing the circuit board and a heat release member presser pressing the heat release member when the circuit board is screwed to the heat release member.

Abstract: An electrical junction box includes a circuit structure, a case main body made of a synthetic resin and having an accommodating portion that accommodates the circuit structure, and a cover 30 made of a metal and that is attached to the case main body, covering the accommodating portion thereof. The cover has a covering wall that covers the accommodating portion of the case main body and a side wall that is continuous with the covering wall and that is disposed around the case main body. The case main body is provided with an abutment portion that abuts on a portion of the side wall of the cover, but not on an end portion of the side wall that is located on the side facing away from the covering wall.

Abstract: An electrical junction box to be attached to a vehicle includes a heat dissipation member having a base plate portion that has a plate shape having a first surface and a second surface, a plurality of fins that protrude from the second surface, and a pedestal that is provided protruding from the second surface and that has a smaller protruding height from the second surface than the fins as well as a bracket having a pedestal attachment portion that is attached to the pedestal and a vehicle body attachment portion that is continuous with that attachment portion, extends in a direction away from the heat dissipation member, and is attachable to a vehicle body of the vehicle.

Abstract: An electrical connection box includes a bus bar, a case to which the bus bar is fixed, a terminal that is connected to the bus bar, a fixing member that fixes a connection portion at which the terminal and the bus bar are connected to each other, and a base member that holds the fixing member. The fixing member and the base member are disposed at a position at which the fixing member and the base member overlap the connection portion of the bus bar, and when the connection portion at which the terminal and the bus bar are connected to each other is fixed, the base member moves in a direction in which the base member comes into contact with the bus bar.

Abstract: An electrical junction box includes a first circuit board that includes electroconductive paths; a second circuit board that includes electroconductive paths; a terminal module including (i) a plurality of terminals that connect the electroconductive paths of the first circuit board and the electroconductive paths of the second circuit board and (ii) an insulative connecting member that connects the plurality of terminals; and a retaining member that retains at least one of the first and second circuit boards. The retaining member has a fitting portion into which the connecting member is fitted.