Abstract:
PROBLEM TO BE SOLVED: To simplify wiring of a wire-printed circuit board to prevent overheating. SOLUTION: A wire-printed circuit board includes a strip conductor wired on a circuit board; and a conductor adjacent to or combined with the strip conductor and wired inside the circuit board. A wire-printed circuit board includes a strip conductor wired on a surface of a circuit board; and a conductor wired inside the circuit board, and the conductor is wired so as to be positioned on a back face of the strip conductor along the strip conductor. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new soldering method capable of efficiently heating solder by utilizing a heat sink equipped onto a circuit board, when soldering an electronic component onto the circuit board. SOLUTION: As the circuit board 11, a cooling circuit board is used. In the cooling circuit board, a metal heat sink 15 having a refrigerant channel 15a is integrated with the backside of the ceramic substrate 14 having a metal circuit 13 on the surface. A semiconductor device 12 is arranged while a solder sheet 33 is interposed on the metal circuit 13, a weight 35 is placed on the semiconductor device 12, and the solder sheet 33 is heated while being pressed by the weight 35. When the solder sheet 33 is heated, a heated heating medium flows in the refrigerant channel 15a. After solder is fused, heating is stopped. After that, a cooling medium flows into the refrigerant channel 15a for cooling the circuit board 11 and the solder. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an electronic power module for ensuring proper cooling of a power component. SOLUTION: The electronic power module comprises at least one semiconductor power element (2), disposed on an electrically insulating substrate (1). The power component (2) has a face in contact with the substrate (1), the face of which is metallized (4) in part and is covered in part in a diamond layer (3). The metallized part (4) is brought into contact with a conductor track (5), provided on the surface of the substrate (1). The diamond-covered part (3) is in register with an opening (8) formed in the substrate (1). The substrate (1) has a face, remote from the element (2) which is cooled by a cooling liquid (6). The liquid flows into the opening (8) and over the surface of the diamond- covered part (3).
Abstract:
PROBLEM TO BE SOLVED: To provide a main board of a computer, selectively mounting CPU fans different in dimensions. SOLUTION: The main board 1 of the computer includes: a CPU mounting area 10; a plurality of first fixing holes 20 for fixing a plurality of fixed ends of a first fan; and a plurality of second fixing holes 30 for fixing a plurality of fixed ends of a second fan. The plurality of first fixing holes 20 and the plurality of second fixing holes 30 are distributed in the periphery of the CPU mounting area 10, and two connecting lines from the center of one second fixing hole 30 and the center of the first fixing hole 20 adjacent to the second fixing hole 30 to the central point of the CPU mounting area 10 form an included angle. COPYRIGHT: (C)2010,JPO&INPIT