Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.

Abstract: A plug-in unit-mounting structure which makes it possible to efficiently mount plug-in units having different sizes in all slots. PIUs of printed board type which are different in size are mounted using respective mounting frames associated therewith. Box-shaped PIUs are also mounted using respective mounting frame associated therewith. However, no guide rail is provided on the metal shelf per se, for guiding each PIU for mounting the same therein.

Abstract: An electronic device having an exhaust opening configured to exhaust air outside, the electronic device includes a door part configured to close the exhaust opening when the electronic device has a predetermined temperature, wherein the door part is rotated based on the own weight of the door part and a wind pressure of the air taken in the electronic device and exhausted outside the electronic device, so that the exhaust opening is closed.

Abstract: A display module includes: a display unit having a display screen for displaying information; a display unit housing including a transparent front cover covering a display screen of the display unit, and a pair of side covers covering both sides of the display unit, wherein the display unit is attached to the display unit housing so as to be detachable; and shafts projecting outwards from the pair of side covers and supported so as to be freely rotatable when fitted in a pair of supporting holes made in a housing provided for an apparatus.

Abstract: A PIU plug-in/plug-off mechanism for an electronic apparatus, which is capable of efficiently applying a force required for a plugging-in/off operation of connectors to a printed board by pressing a portion of the printed board close to a backplane. An operating handle of a card lever is turned counterclockwise to thereby bring a push pin into abutment with a rear edge of an open recess. When the card lever is further turned in this state, a pressing force for moving a plug-in unit in the insertion direction acts on an engaging member via an arm. This starts fitting the printed board into a plug-in connector without causing warping of the printed board.

Abstract: An electronic device having an exhaust opening configured to exhaust air outside, the electronic device includes a door part configured to close the exhaust opening when the electronic device has a predetermined temperature, wherein the door part is rotated based on the own weight of the door part and a wind pressure of the air taken in the electronic device and exhausted outside the electronic device, so that the exhaust opening is closed.

Abstract: A plug-in unit-mounting structure which makes it possible to efficiently mount plug-in units having different sizes in all slots. PIUs of printed board type which are different in size are mounted using respective mounting frames associated therewith. Box-shaped PIUs are also mounted using respective mounting frame associated therewith. However, no guide rail is provided on the metal shelf per se, for guiding each PIU for mounting the same therein.

Abstract: A PIU plug-in/plug-off mechanism for an electronic apparatus, which is capable of efficiently applying a force required for a plugging-in/off operation of connectors to a printed board by pressing a portion of the printed board close to a backplane. An operating handle of a card lever is turned counterclockwise to thereby bring a push pin into abutment with a rear edge of an open recess. When the card lever is further turned in this state, a pressing force for moving a plug-in unit in the insertion direction acts on an engaging member via an arm. This starts fitting the printed board into a plug-in connector without causing warping of the printed board.

Abstract: A heat radiating apparatus includes a radiator adhering to an electronic component mounted on a circuit board via an elastic member provided on the circuit board so that the electronic component is cooled. The radiator includes a plurality of projection parts, the elastic member includes an engaging part configured to engage the projection part and a radiator insert hole forming part where the radiator is inserted, and a pushing force is applied from the elastic member to the radiator by rotating the radiator so that the projection part is engaged by the engaging part, and thereby a bottom surface of the radiator is adhered to the electronic component.

Abstract: The radiator device which radiates heat generated by electronic components mounted on a printed board, and the plug-in unit which the radiator device is equipped to is provided in order to reliably absorb errors in height among various electronic components while realizing a high heat radiation efficiency. The device and the plug-in unit includes: a radiating board which is connected to an electronic component side of a printed board mounted with one or more electronic components thereon, with a specific space between the radiating board and the printed board; a heat conductive block which is connected to a side of the radiating board that faces the printed board in such a manner that the position of the heat conductive block is adjustable along a direction crossing the printed board, the heat conductive block making intimate contact with an electronic component mounted on the printed board.

Abstract: A heat radiating apparatus includes a radiator adhering to an electronic component mounted on a circuit board via an elastic member provided on the circuit board so that the electronic component is cooled. The radiator includes a plurality of projection parts, the elastic member includes an engaging part configured to engage the projection part and a radiator insert hole forming part where the radiator is inserted, and a pushing force is applied from the elastic member to the radiator by rotating the radiator so that the projection part is engaged by the engaging part, and thereby a bottom surface of the radiator is adhered to the electronic component.

Abstract: A communication device includes a sub-rack unit and a plurality of plug-in units. The sub-rack unit includes a back wiring board having first connectors arranged in lines thereon, and a frame plate including vertical ribs and placed on said back wiring board so that the vertical ribs separate the lines of the first connectors. Each of the plug-in units includes: a printed board including top and bottom sides and parallel first and second sides, the printed board having second connectors provided on the first side thereof; a metal case including top and bottom faces, and parallel first and second side faces so as to cover the printed board; and first and second spring members. Each of said plug-in units is mounted in the sub-rack unit with the first and second connectors being connected so that the first and second side faces of the metal case are pressed outward against the vertical ribs of the frame plate by resilient forces of the first and second spring members, respectively.

Abstract: An optical unit includes photoelectric conversion modules, a plurality of adapter support members whose upper parts are rotatably supported, and a plurality of optical connector adapters attached to lower ends of the adapter support members so as to be arranged next to each other, the optical connector adapters being contained in the optical unit. The adapter support members are rotated separately so that the optical connector adapters are extracted outside from the optical unit with a space formed between each adjacent two of said optical connector adapters. Each of the optical connector adapters has insertion holes to which optical connectors of optical fibers extending from the photoelectric conversion modules and optical connectors of external optical fibers are connected.

Abstract: An electronic apparatus includes an optical connector adapting unit to which optical connectors of external optical fibers are connected. The optical connector adapting unit includes a plurality of optical connector adapters which are diagonally arranged on the front side of the apparatus. The optical connectors of the external optical fibers are diagonally detachable from the optical connector adapters. In this electronic apparatus, a large number of optical connectors of optical fibers can be connected and arranged in a restricted space.

Abstract: A telecommunications apparatus 10 includes a sub-rack unit 15 and a plurality of plug-in units inserted from a front side of the sub-rack unit 15 in a Y1 direction and mounted in the sub-rack unit 15. The plug-in unit 16 includes a plug-in unit main body and an aluminum case 41 that covers so as to envelope the plug-in unit main body. An intermediate guide rail member 22 is inserted from the front of the sub-rack unit 15 and mounted by tightening a lock bolt member similarly inserted from the front of the sub-rack unit 13.

Abstract: An optical unit includes photoelectric conversion modules, a plurality of adapter support members whose upper parts are rotatably supported, and a plurality of optical connector adapters attached to lower ends of the adapter support members so as to be arranged next to each other, the optical connector adapters being contained in the optical unit. The adapter support members are rotated separately so that the optical connector adapters are extracted outside from the optical unit with a space formed between each adjacent two of said optical connector adapters. Each of the optical connector adapters has insertion holes to which optical connectors of optical fibers extending from the photoelectric conversion modules and optical connectors of external optical fibers are connected.

Abstract: A communication device includes a sub-rack unit and a plurality of plug-in units. The sub-rack unit includes a back wiring board having first connectors arranged in lines thereon, and a frame plate including vertical ribs and placed on said back wiring board so that the vertical ribs separate the lines of the first connectors. Each of the plug-in units includes: a printed board including top and bottom sides and parallel first and second sides, the printed board having second connectors provided on the first side thereof; a metal case including top and bottom faces, and parallel first and second side faces so as to cover the printed board; and first and second spring members. Each of said plug-in units is mounted in the sub-rack unit with the first and second connectors being connected so that the first and second side faces of the metal case are pressed outward against the vertical ribs of the frame plate by resilient forces of the first and second spring members, respectively.

Abstract: A telecommunications apparatus 10 includes a sub-rack unit 15 and a plurality of plug-in units inserted from a front side of the sub-rack unit 15 in a Y1 direction and mounted in the sub-rack unit 15. The plug-in unit 16 includes a plug-in unit main body and an aluminum case 41 that covers so as to envelope the plug-in unit main body. An intermediate guide rail member 22 is inserted from the front of the sub-rack unit 15 and mounted by tightening a lock bolt member similarly inserted from the front of the sub-rack unit 13.

Abstract: A case unit for housing printed-circuit assemblies includes a top plate made of metal, a bottom plate, made of metal, facing the top plate, side plates facing each other, the side plates being positioned between side portions of the top plate and the bottom plate so that a space surrounded by the top plate, the bottom plate and the side plates is formed, and guide rails, made of resin, integrated with the top plate and the bottom plate, the guide rails guiding the printed-circuit assemblies loaded into the space.

Abstract: A fan unit adapted to be detachably inserted and mounted into a cabinet for an electronic device accommodating a plurality of electronic circuit units, for forcibly air-cooling the interior of the cabinet. The fan unit includes a fan, a unit housing, and a connector. The fan has a frame member and a motor supported to the frame member. The motor has a rotating shaft on which an impeller is mounted. The impeller is rotated by the motor to generate an air flow. The unit housing is integrally formed by resin molding. The unit housing is of a substantially rectangular parallelepiped box-shape having a front plate, a rear plate, a lower plate, a first side plate, a second side plate, and an upper opening. The unit housing has a recessed fan mounting portion having an upper opening inside the lower plate, for engagingly accommodating the fan. The lower plate has at its portion corresponding to a bottom surface of the fan mounting portion a ventilation opening for allowing pass of the air flow generated by the fan.