Abstract:
According to an embodiment of the present invention, there is provided a heat spreader including an evaporation portion, a first condenser portion, a working fluid, and a first flow path. The evaporation portion is arranged in a first position. The first condenser portion is arranged in a second position, the second position being one of higher than and apart from the first position. The working fluid evaporates from a liquid phase to a gas phase in the evaporation portion, and condenses from the gas phase to the liquid phase in the first condenser portion. The first flow path is made of a nanomaterial, has hydrophobicity on a surface, and causes the working fluid condensed to the liquid phase in the first condenser portion to flow to the evaporation portion.
Abstract:
PROBLEM TO BE SOLVED: To provide a heat transfer device enabling stable heat transfer and electronic equipment including the heat transfer device. SOLUTION: An evaporation part 7 constituted of a plurality of evaporation structures 71 is provided in the heat receiving part 4 of a heat spreader 1 filled with a refrigerant. The evaporation structure 71 includes a lateral face 72 facing a flowing part 6 and a plurality of recesses 74 having openings 73 at a plurality of positions different from each other in the Z-axis direction of the lateral face 72, respectively. The recess 74 includes an inclination part 78 inclined to the direction containing components of the Z-axis direction. The inclination part 78 is provided at a portion closer to the heat receiving part 4 on the inner face of the recess 74 so as to form a V groove 61 between the two evaporation structures 71 adjacent to each other sandwiching the flowing part 6. Thus, at various height of a liquid level of a liquid refrigerant, a meniscus face having an efficient shape to evaporate and flow the liquid refrigerant can be formed. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a heat transport device capable of efficiently performing heat transport. SOLUTION: The heat transport device includes a working fluid, an evaporation portion, a condensation portion, and a flow path portion. The heat transport device further includes a region provided on at least one of the evaporation portion, the condensation portion and the flow path portion and made of a carbon material. The working fluid is constituted by adding an organic compound having a hydroxyl group to pure water. The evaporation portion causes the working fluid to evaporate from a liquid phase to a gas phase. The condensation portion is communicated with the evaporation portion, and causes the working fluid to condense from the gas phase to the liquid phase. The flow path portion causes the working fluid condensed in the condensation portion to the liquid phase to flow to the evaporation portion. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a light-emitting device which can use power for driving the device itself to diffuse the heat of a light-emitting part effectively, an electronic instrument loading this, and a method for manufacturing the light-emitting device. SOLUTION: The light-emitting device 1 comprises: an EL (Electro-Luminescence) layer 6 which has a first conductive type first semiconductor layer 5 which is of either an n type or a p type, a second conductive type second semiconductor layer 3 opposite to the first conductive type, and an active layer 4 formed between the two layers concerned; and a first conductive type heat-dissipating layer 2 jointed to a side close to the second semiconductor layer 3 of an EL layer 6. In the heat-dissipating layer 2, since heat transportation by heat conduction and a Peltier effect is generated in a direction of leaving from the active layer 4, it is possible to dissipate the heat effectively. Thus, damage caused by the heat of the active layer 4 is suppressed, thus contributing to high brightness and a high output of the light-emitting device 1. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To efficiently cool a heating part included in an electronic apparatus with a low power. SOLUTION: The cooler comprises a first rotor 14 rotatably disposed in a first circular chamber 10 to conduct heat from a specified heating part to form a plurality of closed spaces 15, 16, 17 which rotate their positions with rotation of the first rotor 14, a second rotor 22 having a heat dissipation part disposed rotatably in a second circular chamber 20 in a close vicinity and rotated in interlocked relation with the first rotor 14 to form a plurality of hermetic spaces 23, 24, 25 which rotate their positions with rotation of the rotor 22, with a specified phase difference from the closed spaces at the first rotor, a plurality of connecting means 41, 42, 43 for connecting between the first circular chamber interior and the second circular chamber interior respectively through regenerative heat exchangers 44, 45, 46 at every specified angle and starting means 30 for starting the first and second rotors.
Abstract:
PROBLEM TO BE SOLVED: To securely protect data in information processing equipment and to put the information processing equipment back normally into the original state when the power supply recovers by obtaining electric power by using the heat energy radiated by a heat generating body inside the information processing equipment. SOLUTION: A CPU 5 mounted on a circuit board 11 in a personal computer main body 2 is a heat generating body which generates heat when driven. In this case, the heat radiated by the CPU 5 is transduced by a thermoelectric transducing element 12 into electricity, whose electric power is supplied as auxiliary electric power needed in case of a power failure (or a standby state entered by intentionally turning off the power source). The thermoelectric transducing element 12 is interposed between the CPU 5 and a heat radiating means (heat sink, etc.), 13 for cooling the CPU 5 by radiating its heat into the air, and an electromotive force is generated by the temperature difference between the CPU 5 and the heat radiating means 13. Then the electric power outputted by this thermoelectric transducing element 12 is accumulated in a storage means 14.
Abstract:
PROBLEM TO BE SOLVED: To obtain a cooling device which can sufficiently cool a heating element, such as the CPU, etc., even though the element generates a large quantity of heat. SOLUTION: A cooling device is constituted in such a structure that the heat generated from a heating element 6 is transferred to a heat radiating means 11 through a circulating pipe 14 and radiated from the means 11. At the same time, the electric power generated from a thermoelectric element 12 by the heat from the heating element 6 is utilized to efficiently transfer the heat from the heating element 6 to the heat radiating means 11, by making a heat conductive fluid in the circulating pipe 14 to flow.
Abstract:
PROBLEM TO BE SOLVED: To sufficiently cool even semiconductor chips having large calorific values by forming fine asperities on the surface of a semiconductor substrate and causing such a surface to be used as a heat sink. SOLUTION: In order to cool a semiconductor chip 13 effectively, fine asperities made of a countless columnar projections 17 are formed on the surface of a semiconductor substrate 14. Furthermore, a piezoelectric film 18 as fluidizing means for fluidizing the air along the asperities-formed surface is provided. The film 18 is supported above the substrate 14 by some base means with a prescribed gap(g) maintained with respect to the substrate 14. By producing a traveling wave through vibration of the film 18 into a wavy form, the air is fluidized in one direction along the asperities-formed surface. As a result, the asperities on the surface of the substrate 14 function as a heat sink. Additionally, the air is fluidized along the asperities-formed surface, whereby the heat from the chip 13 can be radiated more efficiently.
Abstract:
PROBLEM TO BE SOLVED: To efficiently cool a specific heat generation part with cooling mechanism that electronic equipment has. SOLUTION: In this cooling device, a jet-generating device 1 for jetting out cooling fluid in response to the heat generation surface side of a heat-generating device 11 is arranged, a piezoelectric element 12 is glued and fixed to the heat- generating device 11, voltage changing with a frequency lower than the audible frequency band is supplied from a voltage supply circuit 13 for driving, to achieve vibration with a frequency lower than the audible frequency band, and the heat-generating device 11 is vibrated with a frequency lower than the audible frequency band, and at the same time a specific heat generating part is cooled by cooling fluid being jetted out of the jet-generating device 1.
Abstract:
PROBLEM TO BE SOLVED: To improve the cooling efficiency of the heat sink of a heat generating member. SOLUTION: The cooling apparatus 1 of a heat sink is provided with a forcedly air-cooling section 3 which forcedly cools the whole body of a heat sink member 2 with air and forcedly air-cooling sections 6 and 7 which forcedly cool part of the heat sink with air. Since the sections 6 and 7 suppress the formation of a boundary layer which prevents the heat absorbing action of a cooling wind flowing along the heat radiating fin sections 2B and 2C of the heat sink 2 when the heat sink 2 is forcedly cooled by means of the air-cooling section 3, the cooling efficiency of the heat sink 2 is improved.