Abstract: A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer frame. The outer frame of the fan is made of a highly thermally conductive material such as aluminum. A radiation board is fixed to or formed integrally with a lower surface of the outer frame. Heat generated from a heat generating device is conveyed through the radiation board to the outer frame. The blower is provided with radiation fins so that the heat conveyed to the outer frame is transferred to the radiation fins as well.

Abstract: A cooling unit comprises a heat receiving head provided in a main body, and a radiator provided in a display unit. The display unit is pivotably supported by the main body using a hinge shaft. The heat receiving head is thermally connected to a heat generating component incorporated in the main body. The heat receiving head is connected to the radiator via a circulation line for circulating cooling medium. The circulation line includes a bending-force-absorbing section having a shape that is deformable to twist about an axis of the hinge shaft when the display unit is pivoted.

Abstract: A cooling unit comprises a main body, a fan, and a plurality of heat-exchanging elements. The main body receives heat from a heat-generating component and has a cooling air passage. The fan applies cooling air into the cooling air passage. The heat-exchanging elements are exposed in the cooling air passage. Each element is removably secured to the main body and thermally connected to the main body.

Abstract: An electronic apparatus system comprises a portable computer and an extension device for expanding the function of the portable computer. The extension device includes a base, which has a mounting portion on which the portable computer is removably mounted, an exhaust port opened in the mounting portion of the base and a fan unit housed in the base and arranged to supply cooling air to the exhaust port. The base has a plurality of convex portions formed in a bottom wall that extend upward towards the exhaust port and form a foreign matter capturing region in the base. The base includes an exhaust passage for channeling cooling air from the fan over the bottom surface of the portable computer. The fan unit is inclined so that the axis of rotation is tilted toward the opening in the side wall of the mounting portion at the end of the exhaust passage.

Abstract: A cooling unit comprises a heat receiving head provided in a main body, and a radiator provided in a display unit. The display unit is pivotably supported by the main body using a hinge shaft. The heat receiving head is thermally connected to a heat generating component incorporated in the main body. The heat receiving head is connected to the radiator via a circulation line for circulating cooling medium. The circulation line includes a bending-force-absorbing section having a shape that is deformable to twist about an axis of the hinge shaft when the display unit is pivoted.

Abstract: A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer frame. The outer frame of the fan is made of a highly thermally conductive material such as aluminum. A radiation board is fixed to or formed integrally with a lower surface of the outer frame. Heat generated from a heat generating device is conveyed through the radiation board to the outer frame. The blower is provided with radiation fins so that the heat conveyed to the outer frame is transferred to the radiation fins as well.

Abstract: A blower is provided for effectively cooling heat generating parts in a casing of a personal computer and so on, with a heat sink apparatus using the blower and an electronic equipment using the heat sink apparatus. The blower comprises a fan and an outer frame. The outer frame of the fan is made of a highly thermally conductive material such as aluminum. A radiation board is fixed to or formed integrally with a lower surface of the outer frame. Heat generated from a heat generating device is conveyed through the radiation board to the outer frame. The blower is provided with radiation fins so that the heat conveyed to the outer frame is transferred to the radiation fins as well.

Abstract: An electronic apparatus having a housing, a heat-generating component provided in the housing, and a heat sink for cooling the heat-generating component. The heat sink has two metal plates. The first metal plate has a heat receiving portion thermally connected to the heat-generating component. The second metal plate is laid on the first metal plate and thermally connected thereto.

Abstract: A cooling unit having a first heat sink and a second heat sink. The first heat sink overlaps a heat-generating component. The second heat sink covers the first heat sink. The first heat sink having a plurality of heat-conducting sections extending away from the heat-generating component. The second heat sink has a plurality of heat-receiving sections, in which the heat-conducting sections are inserted. A first gap is provided between the first heat sink and the second heat sink. A second gap is provided between each heat-conducting section and the heat-receiving section in which the heat-conducting section is inserted. The first gap and the second gap are filled with grease having viscosity. The grease thermally connects the first heat sink and the second heat sink.

Abstract: An electronic apparatus is provided with a base unit and a display unit. The base unit has an opening formed on the upper surface. The display unit incorporates a display device and supported by the base unit. The display unit is rotatable between a first position where it is tilted down in such a manner as to cover the upper surface of the base unit and a second position where it is raised in such a manner as to expose the upper surface. The display unit includes a projection portion which is inserted into the opening when the display unit is rotated to the first position. A switch for turning the display device on or off is arranged inside the base unit. The switch includes an operation element opposed to the opening of the base unit. When the display unit is rotated to the first position, the operation element is pushed by the projection portion, thereby turning off the display device.

Abstract: A housing of a computer is provided with a mounting section in which first and second pack-type devices can be set alternatively. The mounting section is defined by a recess that opens continuously in a bottom wall and a side wall of the housing. The first pack-type device includes a first device body and a first cover removably attached to the first device body, and has a thickness substantially equal to the depth of the recess. The first pack-type device is set in the recess in a manner such that the first cover closes an the of the recess and is flush with the bottom wall. The second pack-type device includes a second device body and a second cover removably attached to the second device body, and has a thickness greater than the depth of the recess. The second pack-type device is set in the recess in a manner such that the second cover closes the opening of the recess and project from the bottom.

Abstract: A personal computer has a casing that includes a bottom wall formed having fitting holes and a rear wall provided with a first expansion connector. An expansion adapter to which the computer is connected includes a carrying surface, on which the casing is detachably mounted, and a first relay connector connectable with the first expansion connector of the casing placed on the carrying surface. Arranged on the carrying surface are guide rails that guide the casing in movement along the directions of connection and disconnection of the connectors. The expansion adapter includes locking members, which are swingable between a locking position in which they project from the carrying surface and an unlocking position in which they are situated below the carrying surface.

Abstract: A portable electronic apparatus comprises a box-shaped housing. A metal-made frame is contained in the housing. The frame supports a circuit board. A circuit element, generating heat while operating, is mounted on the circuit board. A fan is contained in the housing so as to guide cooling air to the circuit element. The frame has a cooling air passage to guide cooling air thereto by the fan. The cooling air passage has a heat receiving part where heat of the circuit element is transmitted, and the heat receiving part is cooled by cooling air flowing to the cooling air passage.

Abstract: The case includes a peripheral wall having a connector port and a storing portion arranged therein. A connector is located in the case. The connector opposes the connector port. A connector cover is supported by the case. The connector cover is movable among a closed position where the connector is covered, an open position where the connector is exposed to the outside of the case and a storing position in the storing portion where the connector cover is housed.

Abstract: A circuit module comprises a circuit board and a circuit element mounted on the circuit board and producing heat in operation. A heat conduction member, put in contact with the circuit element, for receiving the heat of the circuit element is attached to the circuit board. A metallic heat sink is detachably mounted on the heat conduction member. The heat sink comprises a radiation panel put in contact with the heat conduction member and a fan support portion formed integral with the radiation panel. The fan support portion supports a cooling fan for guiding a cooling air to the radiation panel.

Abstract: A portable electronic apparatus comprising a main body. The main body has a box-shaped housing including a unit receptacle. The unit receptacle protrudes upwards from said box-shaped housing and is located in a rear part of the box-shaped housing. The unit receptacle define a chamber and extends in a widthwise direction thereof. The apparatus further comprises a display unit and an AC power unit. The display unit is coupled to the rear part of the box-shaped housing. The AC power unit is provided in the chamber and electrically connected to said main body. The AC power unit is designed to convert AC power to DC power and supply the DC power to the main body. The AC power unit contains circuit components which generate heat while operating. The AC power unit is supported by a holder which is mounted on a circuit board and by a connector support member which is located at an inner side of the back wall of the box-shaped housing.

Abstract: A portable electronic apparatus includes flat display unit and a box-shaped housing having a bottom wall. A circuit unit incorporated in the housing has a circuit board and a frame to support this circuit board. The display unit is rotatably connected to the housing by a hinge mechanism. This hinge mechanism has a stay which extends parallel to the bottom wall of the housing and sandwiches the circuit unit together with the bottom wall. The stay is fastened by a screw which is driven into the bottom wall through the circuit unit.

Abstract: An electronic system comprises an electronic apparatus having a keyboard and a first connector, and an extension unit containing an extension device.

Abstract: An electronic system includes an electronic apparatus body and an external expansion unit. The electronic apparatus body has a bottom surface and a rear surface. A first connector is arranged on the rear surface. The external expansion unit has a first surface opposing the bottom surface, and a second surface opposing the rear surface. The external expansion unit has a second connector which is detachably connected to the first connector. The external expansion unit has an engaging device. The engaging device is movable between the first position where the engaging device is separated from the bottom surface and the second position where the engaging device is engaged with the bottom surface to pull the electronic apparatus body toward the second surface. The external expansion unit has an operation mechanism for selectively moving the engaging device to the first and second positions.

Abstract: A portable electronic apparatus comprising a box-shaped housing made of synthetic resin and a circuit unit incorporated in the housing. The circuit unit has a circuit board having circuit parts which generate noise while operating, a frame supporting the circuit board, and a shield formed of a metal plate and surrounding the circuit board and the frame. The frame is a molding made of synthetic resin or a cast product made of metal such as magnesium.