Abstract: A centrifugal fan includes a fan rotating about a central axis; and a fan casing enclosing the fan and having an air intake port formed in an axial direction in which the central axis extends and an air exhaust port formed in an orthogonal direction orthogonal to the central axis, radiating fins being provided in the air exhaust port, a tongue portion close to the fan and an inner flow channel going around the fan from the tongue portion to the air exhaust port are formed in the fan casing, and the fan casing has a cover (metallic plate) forming at least one of a top face and a bottom face facing each other in the axial direction, and a protruding portion formed on the cover and projecting toward a blow-out side of the inner flow channel opposite the tongue portion.

Abstract: A heat transport device is disclosed. The heat transport device includes a heat pipe and a heat spreader. The heat pipe, which is thermally connecting to a heating element, includes a heat receiving surface for receiving heat from the heating element, and a side surface intersecting with the heat receiving surface. The heat spreader, which is thermally connecting to the heat pipe, includes a first plate member having a first side surface thermally connecting to the side surface of the heat pipe, and a second plate member having a side surface thermally connecting to a second side surface of the first plate member opposite to the first side surface in contact with the heat pipe.

Abstract: There is provided an electronic apparatus that includes a heat radiation unit capable of radiating heat efficiently from a heat pipe. The electronic apparatus includes: a blower fan that blows air toward an exhaust port formed in a main body chassis; a heat radiation fin provided in an air-blowing outlet of the blower fan; and a heat pipe fixed to the heat radiation fin. In a region in contact with the heat pipe, the heat radiation fin is of a partial connection structure in which multiple fin members are partially fixed and connected to one another, and in a region with no contact with the heat pipe, the heat radiation fin is a structure of continuous fins.

Abstract: An electronic apparatus is disclosed. The electronic apparatus includes a chassis member, a processor provided inside the chassis member, a prong portion provided on the chassis member, a heat spreader provided inside the chassis member to transport heat generated by the processor, and a hook provided to the heat spreader and to be engaged with the prong portion. The hook includes arms extending in an engagement direction in which the hook is engaged with the prong portion, and an engagement piece connected to the arms and extending in the lateral direction. The prong portion includes a projection projecting in the outward direction to be engaged with the engagement piece. The engagement piece is in line contact or point contact with the projection, as to the engagement direction. The arms are not in contact with the projection as to the lateral direction.

Abstract: A cover member is capable of dispersion of heat generated in a portable information device. A cover member is to be mounted on a portable information device. The cover member includes a first cover portion, a second cover portion, a connecting portion connecting the first cover portion and the second cover portion in a foldable manner, and a heat conductive sheet disposed so as to extend from the first cover portion to the second cover portion through the connecting portion.

Abstract: A plate-type heat transport device is provided. The plate-type heat transport device includes a metal plate having a meandering shape flow passage. The flow passage includes multiple linear channels and return channels. The linear channels extends in parallel to each other from a first end of the metal plate to a second end of the metal plate. The return channels are located in the first and second ends of the metal plate to allow the linear channels to communicate with each other. A first area of the metal plate associated with the linear channels is thinner than a second area of the metal plate associated with the return channels. The flow passage of the metal plate contains a hydraulic fluid.

Abstract: The present invention aims to reduce noise derived from an operation sound of a fan while maintaining cooling capacity of the fan. A cooling system includes a fan which is disposed in a chassis in which a CPU which is exemplified as a heating element is housed, one temperature sensor which is disposed in the chassis, another temperature sensor which is disposed at a position which is different from a position of the one temperature sensor, and a fan control unit which drives the fan in a case where one temperature, which is based on a measured value of one temperature sensor, is at least a first threshold value or in a case where another temperature, which is based on a measured value of the other temperature sensor, is at least a second threshold value which is set to a value lower than the first threshold value.

Abstract: A method, apparatus and computer program product are disclosed. The method includes detecting ambient light around an electronic device, determining whether a user is present based on the ambient light, and controlling an operation of the electronic device. The apparatus includes a component that consumes electric power, a light sensor that detects ambient light, a frequency analyzing unit that specifies a frequency component, and a control unit that determines whether a user is present and controls an operation of the component. The computer program product includes code to perform detecting ambient light around an electronic device, determining whether a user is present based on the ambient light, and controlling an operation of the electronic device.

Abstract: A fan having reduced discrete tone noise is disclosed. The fan includes a fan chassis having an air inlet and an air outlet formed open at an outer surface of the fan chassis; an impeller part provided in the fan chassis; a wall part forming an air passage, the air passage is provided in the fan chassis to allow air to be introduced through the air inlet by rotation of the impeller part to flow to the air outlet; and a resonator having a cavity part communicating with said air passage through a communication passage passing through the wall part.

Abstract: An electronic apparatus is provided. The electronic apparatus includes a main body chassis equipped with a keyboard device, a CPU, a heat diffusion component and a heat transport component. The CPU is disposed on a rear end side beyond the keyboard device. The heat diffusion component is disposed at a position located under the keyboard device in a mutually superposed state. The heat transport component is connected between the CPU and the heat diffusion component to provide heat transfer.

Abstract: An apparatus to switch a central processing unit between operational modes includes, in one embodiment, a central processing unit (“CPU”) having at least a first operation mode and a second operation mode, where the second operation mode is a higher performance operation mode than the first operation mode.

Abstract: An information processing device suppresses the entering of a state unintended by a user in a standby mode. The information processing device, which has a standby mode and a normal operation mode, has a mode control portion changing the mode to the standby mode of bringing the state into a first low power consumption state and configured to be switched to a first operating state in which background processing is executed in response to a stop of a display of a display portion, and a power setting processing portion configured to set a first upper limit power consumption in the first operating state and a second upper limit power consumption in a second operating state in the normal operation mode, and set the first upper limit power consumption so as to be lower than the second upper limit power consumption when the mode control portion changes the mode to the standby mode.

Abstract: The present invention aims to reduce noise derived from an operation sound of a fan while maintaining cooling capacity of the fan. A cooling system includes a fan which is disposed in a chassis in which a CPU which is exemplified as a heating element is housed, one temperature sensor which is disposed in the chassis, another temperature sensor which is disposed at a position which is different from a position of the one temperature sensor, and a fan control unit which drives the fan in a case where one temperature, which is based on a measured value of one temperature sensor, is at least a first threshold value or in a case where another temperature, which is based on a measured value of the other temperature sensor, is at least a second threshold value which is set to a value lower than the first threshold value.

Abstract: An electronic apparatus having a cooling device that can reduce size and cost thereof while maintaining sufficient cooling performance of cooling a portable information apparatus is disclosed. The electronic apparatus includes a portable information apparatus and a cooling device. The portable information apparatus includes a heat-dissipation heat sink thermally connected to a heating body. The cooling device includes a cooling unit for absorbing heat from the heating body. The cooling unit includes a heat-receiving heat sink that is thermally connected to a heat-dissipation heat sink when the portable information apparatus is connected to the cooling device, and a radiator that dissipates heat absorbed in the heat-receiving heat sink to outside. The radiator is disposed on an exhaust path from an air outlet of the portable information apparatus while the portable information apparatus is connected to the cooling device.

Abstract: An electronic apparatus which can achieve both a reduction in thickness of a chassis and an improvement in a heat releasing performance is provided. An electronic apparatus 10 includes a chassis 12 having an electronic component 18 arranged therein, a heat sink 20 which is provided in the chassis 12 and absorbs heat generated from the electronic component 18 when its one surface 20a is arranged to enable conduction of the heat from the electronic component 18, and a heat conducting sheet 22 which is arranged in the chassis 12, closely arranged on the other surface 20c on the side opposite to the one surface 20a of the heat sink, has an outer shape area larger than an outer shape area of the heat sink 20, and extends to the outside of an outer shape of the heat sink 20.

Abstract: An information processing device suppresses the entering of a state unintended by a user in a standby mode. The information processing device, which has a standby mode and a normal operation mode, has a mode control portion changing the mode to the standby mode of bringing the state into a first low power consumption state and configured to be switched to a first operating state in which background processing is executed in response to a stop of a display of a display portion, and a power setting processing portion configured to set a first upper limit power consumption in the first operating state and a second upper limit power consumption in a second operating state in the normal operation mode, and set the first upper limit power consumption so as to be lower than the second upper limit power consumption when the mode control portion changes the mode to the standby mode.

Abstract: An electronic apparatus is provided. The electronic apparatus includes a main body chassis equipped with a keyboard device, a CPU, a heat diffusion component and a heat transport component. The CPU is disposed on a rear end side beyond the keyboard device. The heat diffusion component is disposed at a position located under the keyboard device in a mutually superposed state. The heat transport component is connected between the CPU and the heat diffusion component to provide heat transfer.

Abstract: A plate-type heat transport device is provided. The plate-type heat transport device includes a metal plate having a meandering shape flow passage. The flow passage includes multiple linear channels and return channels. The linear channels extends in parallel to each other from a first end of the metal plate to a second end of the metal plate. The return channels are located in the first and second ends of the metal plate to allow the linear channels to communicate with each other. A first area of the metal plate associated with the linear channels is thinner than a second area of the metal plate associated with the return channels. The flow passage of the metal plate contains a hydraulic fluid.

Abstract: An embodiment provides an electronic device, including: a housing with an exhaust port and an intake port; a heat source contained in the housing; a heat transfer unit connected to the heat source; a first radiator located adjacent to the exhaust port, wherein the first radiator is connected to the heat transfer unit; a first blower fan, wherein the first blower fan discharges heat transmitted to the first radiator; and a second radiator located adjacent to the intake port, wherein the second radiator is connected to the heat transfer unit. Other embodiments are described and claimed.

Abstract: There is provided an electronic apparatus that includes a heat radiation unit capable of radiating heat efficiently from a heat pipe. The electronic apparatus includes: a blower fan that blows air toward an exhaust port formed in a main body chassis; a heat radiation fin provided in an air-blowing outlet of the blower fan; and a heat pipe fixed to the heat radiation fin. In a region in contact with the heat pipe, the heat radiation fin is of a partial connection structure in which multiple fin members are partially fixed and connected to one another, and in a region with no contact with the heat pipe, the heat radiation fin is a structure of continuous fins.