Abstract:
PROBLEM TO BE SOLVED: To provide a printed circuit board laminate of novel structure which allows for connection of the printed wires on printed circuit boards, arranged to face each other across a gap, with enhanced workability and connection stability.SOLUTION: In a first printed circuit board 18 and a second printed circuit board 20 arranged to face each other across a gap, a first tuning fork terminal 26 soldered to a printed wire 32 is stood on the first printed circuit board 18, and a second tuning fork terminal 34 soldered to a printed wire 36 is stood on the second printed circuit board 20. The printed wire 32 of the first printed circuit board 18, and the printed wire 36 of the second printed circuit board 20 are brought into conduction via a conduction member 56 including a pair of connections 57, 57 that are pressed between pressure contact blades 28, 28 of the first and second tuning fork terminal 26, 34.
Abstract:
PROBLEM TO BE SOLVED: To provide a heat radiator which radiates heat of a power source layer that is an inner layer of a multi-layer printed board and shields electromagnetic noise that may be emitted as the heat is radiated.SOLUTION: A heat radiator includes: a heat radiation member connecting with a power source layer, which is an inner layer of a multi-layer printed board on which electronic components are mounted, so as to conduct heat and also electrically connecting therewith; and a multi-layer printed board for heat radiation which has a heat radiation layer connecting with the heat radiation member so as to conduct heat and also electrically connecting therewith and a shield layer shielding electromagnetic noise emitted from the heat radiation layer and further has a structure where the heat radiation layer is electrically insulated from the shield layer and the heat radiation member is electrically insulated from the shield layer when the heat radiation member connects with the heat radiation layer. The shield layer electrically connects with a grounded housing, and the heat radiation layer connects with the housing through an insulation body so as to conduct heat.
Abstract:
PROBLEM TO BE SOLVED: To provide a board terminal which is easy to handle and capable of preventing occurrence of solder cracks in a state attached to a printed circuit board, and has a novel structure. SOLUTION: By using a cutting wire material 12 of a metal wire material cut in a prescribed length, since recess flattening work parts 16, 16 are formed in the outer peripheral faces 14a, 14b of an intermediate part of a length direction of the cutting wire material 12, a curved part 20 is formed without forming a protruding part extending sideward, and rigidity can be reduced, an elastically deformable part against an exterior force is formed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To obtain a part-incorporated printed wiring board which is provided with a heat dissipation metal having an external connection electrode in through structure. SOLUTION: A part-incorporated printed wiring board comprises a heat dissipation metal member 32 which is provided on the outer layer side of a first base 11 through an insulating layer 31 except a fixing portion H, a through-hole Ph which is formed to penetrate the first and second bases 11 and 12 and to communicate with the fixing portion H, and through conductors 16a and 16b of two-layer structures provided on the inner wall of the through-hole Ph. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To suppress an electrostatic capacity of a through-hole of a high density/highly-multilayered printed-circuit board for transmitting a high-speed signal. SOLUTION: The through-hole for press fittig a press-fit pin is formed to the printed-circuit board of this invention. The printed-circuit board comprises at least one signal transmission layer, a wiring pattern for signal transmission formed to at least the one signal transmission layer, and an electrode part of the wiring pattern for signal transmission exposing on an inner circumferential surface of the through-hole. The electrode is formed not on the whole inner circumferential surface of the through-hole, but on only a part of it. COPYRIGHT: (C)2008,JPO&INPIT