摘要:
A heat sink for a semiconductor device comprises a base which has a first surface on which a plurality of heat-radiating fins are arranged, and a second surface which contacts the semiconductor device directly. A heat spreader is provided on the second surface of the base so that the heat spreader does not contact the semiconductor device directly.
摘要:
An IC card adapted to be removably inserted into a slot of an IC card mountable device, including a card housing formed like a substantially rectangular card with an inside space defined therein, the card housing having a plurality of openings through a wall of the card housing; a printed wiring board accommodated in the card housing; and a plurality of electronic components mounted on the printed wiring board.
摘要:
A cooling device for a portable electronic comprises a radiation plate and a fin for radiating the heat from the CPU. When the plug of an external power. supply is attached to the body of the portable electronic, the CPU may operate at a high clock frequency. The cooling device achieves a high cooling performance by operating a ventilation fan directed to the fin, for example. When the plug is removed from the body of the portable electronic, the CPU may operate at a low clock frequency. Power consumption can be reduced, so that the electric power stored in the built-in battery can be saved. The duration time of the operation can be extended. Calorific power generated at the CPU can also be reduced, so that the cooling device is adapted to suppress the rise in the temperature of the CPU without operation of the ventilation fan.
摘要:
An electronic device having an IC card slot into which an IC card is removably inserted. The IC card slot has a slot side connector to which a card side connector of the IC card is electrically connected and a socket formed in an approximately U-shaped. The slot side connector is mounted on a bottom portion of the socket. Guide grooves for guiding side edge portions of the IC cards are formed in an inner surface portion of each of guide rail portions formed on both sides of the socket, and a plurality of heat radiation fins are formed on an outer surface portion of each guide rail portion. The socket is made of a metal material having a high thermal conductivity. Heat generated from the IC card is radiated via the guide rail portions and the heat radiation fins.
摘要:
A semiconductor element cooling apparatus adapted to cool at least one semiconductor element mounted on a circuit substrate. The semiconductor element cooling apparatus includes a first mechanism for generating a coolant flow by flowing a coolant over a top surface of the semiconductor element, and a second mechanism for obliquely obstructing the coolant flowing over the semiconductor element from an upstream side towards a downstream side of the coolant flow.
摘要:
A portable electronic apparatus includes a first unit, a second unit, and a hinge unit. The first unit includes a first housing, a heat generating component inside the first housing, a first heat diffusing member disposed inside the first housing and diffusing heat from the heat generating component, and a heat dissipating part dissipating heat diffused by the first heat diffusing member to the outside of the first housing. The second unit includes a second housing, a second heat diffusing member disposed inside the second housing and diffusing heat inside the second housing, and a heat receiving part conducting heat from the heat dissipating part to the second heat diffusing member upon the heat receiving part being in contact with the heat dissipating part.
摘要:
A cooling unit has a heat receiving unit that receives heat from a body radiating heat; a radiator disposed at a distance from the heat receiving unit and radiating recovered heat; a liquid coolant transporting heat generated at the heat receiving unit to the radiator; and a hollow tube disposed so that the liquid coolant circulates between the heat receiving unit and the radiator, a circulating flow of the liquid coolant formed by an elevating force of air bubbles generated from the heat received at the heat receiving unit, the radiator having an air pocket forming one part of the circulation path of the liquid coolant together with the hollow tube and capable of collecting the air bubbles.
摘要:
A tire (2) includes a belt (12) provided on a carcass (10) and a band (14) for covering the belt (12). The band (14) includes a full band (36) and a pair of edge bands (38) provided in the vicinity of a shoulder and positioned on an outside in a radial direction of the full band (36). The full band (36) has a first band cord (40) wound spirally in a substantially circumferential direction. The edge band (38) has a second band cord (44) wound spirally in the substantially circumferential direction. A modulus of the second band cord (44) is higher than that of the first band cord (40). In the tire (2), it is preferable that an outer end (50) of the full band (36) should be provided on an outside of an outer end (48) of the belt (12) in an axial direction. An outer end (52) of the edge band (38) is identical to the outer end (48) of the belt (12) or is provided on an inside thereof.