Abstract: A foldable electronic device includes a first housing, a second housing, a pivot structure, a heat conducting member, a first heat pipe and a second heat pipe. The pivot structure pivotally connects the first housing to the second housing. The heat conducting member is disposed in the pivot structure. An end of the first heat pipe is pivotally connected to the heat conducting member and another end of the first heat pipe is fixed on the first housing. An end of the second heat pipe is pivotally connected to the heat conducting member and another end of the second heat pipe is fixed on the second housing.

Abstract: The disclosure provides a fluid driving device including a casing and an oscillation film. The casing has a fluid chamber, a liquid inlet, a liquid outlet, and a vent hole. The oscillation film is movably disposed in the fluid chamber so as to divide the fluid chamber into a liquid channel and a gas channel that are not fluid-connected to each other. The liquid inlet and the liquid outlet are connected to the liquid channel, and the vent hole is connected to the gas channel. When the oscillation film oscillates, it forces liquid to flow into the liquid channel from the liquid inlet and forces gas to flow out of the gas channel from the vent hole, or it forces the liquid to flow out of the liquid channel from the liquid outlet and forces the gas to flow into the gas channel from the vent hole.

Abstract: A heat pipe structure is used for cooling a heat source. The heat pipe structure includes a sleeve tube and a shaft. The sleeve tube includes an inner wall. The sleeve tube has a trench on the inner wall. The trench is at an outlet end of the sleeve tube. The trench extends in a circumferential direction of the sleeve tube. The shaft is connected to the heat source. The shaft is inserted into the sleeve tube from the outlet end such that the shaft is rotatable relative to the sleeve tube. The trench surrounds the shaft.

Abstract: The disclosure provides a fluid driving device including a casing and an oscillation film. The casing has a fluid chamber, a liquid inlet, a liquid outlet, and a vent hole. The oscillation film is movably disposed in the fluid chamber so as to divide the fluid chamber into a liquid channel and a gas channel that are not fluid-connected to each other. The liquid inlet and the liquid outlet are connected to the liquid channel, and the vent hole is connected to the gas channel. When the oscillation film oscillates, it forces liquid to flow into the liquid channel from the liquid inlet and forces gas to flow out of the gas channel from the vent hole, or it forces the liquid to flow out of the liquid channel from the liquid outlet and forces the gas to flow into the gas channel from the vent hole.

Abstract: A heat pipe structure is used for cooling a heat source. The heat pipe structure includes a sleeve tube and a shaft. The sleeve tube includes an inner wall. The sleeve tube has a trench on the inner wall. The trench is at an outlet end of the sleeve tube. The trench extends in a circumferential direction of the sleeve tube. The shaft is connected to the heat source. The shaft is inserted into the sleeve tube from the outlet end such that the shaft is rotatable relative to the sleeve tube. The trench surrounds the shaft.

Abstract: This disclosure relates to a thermal insulation structure including a base plate and a thermal insulation component. The thermal insulation component is disposed on the base plate and is made of aerogel. The thermal conductivity of the base plate is higher than the thermal conductivity of the thermal insulation component.

Abstract: A fan module includes a housing, a bearing, a rotating shaft, and a fan wheel. The housing includes a bottom covering plate, a top covering plate, and a side wall connected between the bottom covering plate and the top covering plate and surrounding to form a housing space. The bearing is disposed on the bottom covering plate and includes a supporting pillar. The supporting pillar extends from the bottom covering plate toward the top covering plate. The rotating shaft has a first through hole therein. The rotating shaft is rotatably sleeved onto the supporting pillar by the first through hole. The fan wheel is connected to an outer edge of the rotating shaft.

Abstract: An airflow generating device includes a container, a first air switch, a second air switch, a magnetic oscillating element, and one or more coils. The container has a first opening and a second opening. The first air switch is configured to open or close the first opening. The second air switch is configured to open or close the second opening. The magnetic oscillating element is disposed in the container. The one or more coils are disposed adjacent to the magnetic oscillating element. The one or more coils are configured to generate at least one sensing current corresponding to the oscillation of the magnetic oscillating element, so as to make the first air switch and the second air switch respectively open or close the first opening and the second opening according to the at least one sensing current.

Abstract: A fan module includes a housing, a bearing, a rotating shaft, and a fan wheel. The housing includes a bottom covering plate, a top covering plate, and a side wall connected between the bottom covering plate and the top covering plate and surrounding to form a housing space. The bearing is disposed on the bottom covering plate and includes a supporting pillar. The supporting pillar extends from the bottom covering plate toward the top covering plate. The rotating shaft has a first through hole therein. The rotating shaft is rotatably sleeved onto the supporting pillar by the first through hole. The fan wheel is connected to an outer edge of the rotating shaft.

Abstract: A charging/discharging apparatus utilizing the thermoelectric conversion effect includes a thermoelectric conversion module, a current path providing unit and a charging/discharging element. The thermoelectric conversion module is disposed between an upper cover and a lower cover of a wearable device. The thermoelectric conversion module generates a current according to a temperature difference between the upper cover and the lower cover. The current path providing unit coupling with the thermoelectric conversion module provides a first current path and a second current path. The charging/discharging element couples with the current path providing unit. When a temperature of the lower cover is higher than a temperature of the upper cover, the current charges the charging/discharging element through the first current path. When a temperature of the upper cover is higher than a temperature of the lower cover, the current charges the charging/discharging element through the second current path.

Abstract: An electronic device includes a casing, an electronic module, a heat sink, an airflow generator, and an ion generator. The casing has an accommodating space and an air inlet is connected to the accommodating space. The electronic module is located in the accommodating space. The heat sink is located in the accommodating space, and the heat sink is connected to the electronic module. The airflow generator located in the accommodating space has an air inlet opening and an air outlet opening. The air inlet opening is connected to the air inlet. The airflow generator is used to generate air flow to the heat sink along an air flow path through the air outlet opening. The ion generator is located in an air flow path of the air flow between the heat sink and the airflow generator in order to produce ions.

Abstract: A heat dissipation estimating method is disclosed. The heat dissipation estimating method includes following steps: providing an input heat to a fin of a heat sink unit; obtaining an average temperature of the fin according to the input heat; obtaining an output heat according to the average temperature; determining whether the input heat is the same as the output heat or not; while the input heat is different from the output heat, updating the input heat according to the output heat and repeating the above steps until the input heat is the same as the output heat; and while the input heat is the same as the output heat, obtaining a total heat dissipation value of the heat sink unit according to the input heat and a ratio value.

Abstract: An airflow generating device includes a container and an oscillating element. The container has at least one opening. The oscillating element is disposed in the container, separates an inner space of the container into a first space and a second space, in which the first space and the second space are isolated from each other, and the opening is connected to one of the first space and the second space. The oscillating element is configured to oscillate corresponding to do AC magnetic field generated by one or more external power providing coils.

Abstract: An airflow generating device includes a container, a first air switch, a second air switch, a magnetic oscillating element, and one or more coils. The container has a first opening and a second opening. The first air switch is configured to open or close the first opening. The second air switch is configured to open or close the second opening. The magnetic oscillating element is disposed in the container. The one or more coils are disposed adjacent to the magnetic oscillating element. The one or more coils are configured to generate at least one sensing current corresponding to the oscillation of the magnetic oscillating element, so as to make the first air switch and the second air switch respectively open or close the first opening and the second opening according to the at least one sensing current.

Abstract: A heat dissipation estimating method is disclosed. The heat dissipation estimating method includes following steps: providing an input heat to a fin of a heat sink unit; obtaining an average temperature of the fin according to the input heat; obtaining an output heat according to the average temperature; determining whether the input heat is the same as the output heat or not; while the input heat is different from the output heat, updating the input heat according to the output heat and repeating the above steps until the input heat is the same as the output heat; and while the input heat is the same as the output heat, obtaining a total heat dissipation value of the heat sink unit according to the input heat and a ratio value.

Abstract: A charging/discharging apparatus utilizing the thermoelectric conversion effect includes a thermoelectric conversion module, a current path providing unit and a charging/discharging element. The thermoelectric conversion module is disposed between an upper cover and a lower cover of a wearable device. The thermoelectric conversion module generates a current according to a temperature difference between the upper cover and the lower cover. The current path providing unit coupling with the thermoelectric conversion module provides a first current path and a second current path. The charging/discharging element couples with the current path providing unit. When a temperature of the lower cover is higher than a temperature of the upper cover, the current charges the charging/discharging element through the first current path. When a temperature of the upper cover is higher than a temperature of the lower cover, the current charges the charging/discharging element through the second current path.

Abstract: A temperature informing apparatus for a user to actually experience a target temperature includes a thermoelectric conversion module, a temperature sensor, a first current path, a second current path, a charging/discharging element and a micro-processor. The thermoelectric conversion module is disposed between an upper cover and a lower cover of a wearable device. The temperature sensor senses a temperature of the upper cover and the lower cover. The micro-processor compares the temperature with the target temperature to get a temperature difference to calculate a corresponding current and controls the charging/discharging element to transfer the corresponding current to the thermoelectric conversion module to heat up or cool down the upper cover or the lower cover.

Abstract: A fan includes a first motor, a second motor, a rotating shaft and a fan blade. The first motor includes a first coil. A first current flows through the first coil when the fan is electrified. The second motor includes a second coil. A second current flows through the second coil when the fan is electrified. The fan blade is affixed to the rotating shaft. The first motor and the second motor drive the rotating shaft to rotate the fan blade when the fan is electrified.

Abstract: An electronic device includes a housing, a heat generating element and a heat prevention module. The housing includes a case portion. The heat generating element is disposed inside the housing. The heat prevention module obstructs between the case portion and the heat generating element. The heat prevention module includes a first thermally conductive plate, a second thermally conductive plate and a third thermally conductive plate. The second thermally conductive plate obstructs between the first thermally conductive plate and the case portion. The third thermally conductive plate connects an edge of the first thermally conductive plate and an edge of the second thermally conductive plate.

Abstract: A fan module, disposed inside a case of an electronic device, includes a case body, a blade assembly, a stopping plate and an adjusting element. The case body, including a first case unit, a sidewall and a second case unit, forms an accommodating space. The first case unit or/and the second case unit has an air inlet. The sidewall has an air outlet and an adjusting opening. The blade assembly is disposed inside the accommodating space. The stopping plate, disposed on the sidewall, is for opening or closing the adjusting opening. The adjusting element is movably disposed on the stopping plate and for pressing against the stopping plate. When the adjusting element moves from a first position toward a second position, the adjusting element pushes against and makes the stopping plate to be offset toward the blade assembly, and produces a gap between the stopping plate and the sidewall.