Abstract:
Um bedrahtete Bauteile großer Masse oder mit ungleicher Masseverteilung sicher auf einer Leiterplatte (60) zu befestigen, ohne daß die Bauteile, wie heute üblich , auf die Leiterplatte geklebt oder mit Snap-In-Halterungen auf der Leiterplatte gehalten werden, schlägt die Erfindung vor, in eine Anschlußbohrung (11) zur Aufnahme eines Anschlußdrahtes oder -pins (111) eines elektronischen Bauteils (110) eine Haltevorrichtung (65) zum Festhalten des Anschlußdrahtes oder -pins (111) zu integrieren. Die Haltevorrichtung (65) stellt eine Verengung in der Anschlußbohrung (11) auf einen Durchmesser dar, der kleiner ist als der des Anschlußdrahtes oder -pins (111). Beispielsweise kann die Haltevorrichtung (65) durch eine Anschlußbohrung (11) realisiert werden, die als einseitige aber nicht vollständig durch die Leiterplatte (60) hindurch gebohrte Bohrung (16) ausgeführt ist. In diesem Fall bleibt ein Rand als Verengung (65) stehen, der den Anschlußpins (111) des betrachteten Bauteils (110) festklemmt und das Bauteil auf der Leiterplatte festhält.
Abstract:
A masking film (3) having desired apertures (2) is applied to a metal wiring board (1). With this construction, a conventional insulation substrate which is to be a thick base and a conventional resist layer can be eliminated. Further, when the terminal parts (T) of the metal wiring board (1) are bent, connection terminals which are substituted for connector terminals for the connection to another board are formed integrally to eliminate the connector terminals. Thus, a low cost component mounting board is provided.
Abstract:
The present invention provides a vertical card connector (12) capable of preventing an undesirable flow of melted solder which destroys proper contacts and of removing a corrosion-causing acid gas. The vertical card connector includes an insulating housing (14) with a plurality of contact terminals (26) and a heat-resisting insulating resin film (28) covering the bottom surface (14b) of the housing. Each contact terminal has a solder tail (26b) extending through film. A slight gap (30a) is created between the heat-resisting film (28) and the bottom surface of the housing. The solder tail of the contact is inserted into a corresponding plated through hole (1a) and soldered there. The film (28) prevents a melted solder from flowing past the solder tail toward a contact beam of the contact at a time of soldering. A gas evolved from the solder escapes through the gap between the circuit board and the bottom of the housing.
Abstract:
Disclosed are a light emitting diode (LED) module and a lighting assembly. The lighting assembly comprises a light emitting device, a driver integrated circuit device for driving the light emitting device, a heat sink for dissipating heat generated from the light emitting device, and a heat shielding portion for blocking thermal interference between the driver integrated circuit device and the light emitting device. In the LED module, the driver integrated circuit device is disposed on the heat shielding portion. Accordingly, it is possible to block thermal interference between the light emitting device and the driver integrated circuit device and to decrease the size of the lighting assembly.
Abstract:
Disclosed are a light emitting diode (LED) module and a lighting assembly. The lighting assembly comprises a light emitting device, a driver integrated circuit device for driving the light emitting device, a heat sink for dissipating heat generated from the light emitting device, and a heat shielding portion for blocking thermal interference between the driver integrated circuit device and the light emitting device. In the LED module, the driver integrated circuit device is disposed on the heat shielding portion. Accordingly, it is possible to block thermal interference between the light emitting device and the driver integrated circuit device and to decrease the size of the lighting assembly.
Abstract:
A technique is disclosed for an optical transceiver, where the frame ground is electrically isolated from the signal ground in a low frequency region and is conducted in a high frequency region, without applying a capacitor as a substantial circuit component. The transceiver includes a TOSA whose housing is grounded with the FG and connected with the driver with a FPC board. On the FPC board is formed with a parallel plate capacitor, one conductive pattern on the one surface is connected with the housing of the TOSA, while the other pattern in the opposite surface is connected with the SG. This parallel plate capacitor isolates the FG from the SG in low frequencies, while conducts the FG with the SG in high frequencies.
Abstract:
A system for mounting VLSI devices on a substrate is disclosed, offering a high contact density. Each package consists of a semiconductor device having protruding elongated contact pin (2) on its surface and a wiring substrate having a cavity (3) on its surface. The cavities are filed with a conductive material (7) of a low melting point composition and sealed with a thin non-conductive foil (4). During packaging, the contact pins are made to penetrate the foil, and extend into the conductive alloy, thus making electrical contact therewith. To ease the penetration of the foil, the contact pins could be set into oscillating motion by means of an ultrasonic generator.
Abstract:
An electronic circuit board has protrusions of rubber-like material on the surface opposite to the surface on which the printed circuit is provided with terminal contact points located at positions in correspondence with the individual terminal contact points or with the individual groups of the terminal contact points, each of the groups being composed of the terminal contact points aligned in a row.
Abstract:
A compact photoflash unit comprising a plurality of flashlamps having lead-in wires connected to a circuit board containing thereon radiation-sensitive switching circuitry for sequentially flashing the lamps. Electrically conductive reflector panels are positioned between the lamps and the circuit board, and a sheet of electrically insulating material is interposed between the reflectors and the circuit board to prevent shorting of the circuitry on the circuit board by the conductive reflector. The insulating sheet, which may be of transparent plastic, is provided with T-shaped tabs which interlock with slots in the circuit board to secure the aligned position of the insulating sheet thereon. In assembling the photoflash unit, the insulating sheet is placed on the circuit board prior to mounting the lamps, and the T-shaped tabs of the sheet are inserted in the circuit board slots to secure the aligned location of holes in the insulating sheet with lamp-mounting eyelets in the circuit board.