Abstract: According to one embodiment, a semiconductor device includes a first conductor, a second conductor, and an envelope. The first conductor includes a first radiation surface. The second conductor includes a second radiation surface. The envelope includes a first envelope portion which is composed of a first insulative material and is formed such that the first envelope portion seals a semiconductor, and a second envelope portion which is composed of a second insulative material and is formed in contact with the first radiation surface and the second radiation surface.

Abstract: A construction machine includes: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct. A portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole.

Abstract: A piston drive device includes: a crankcase; first and second compression cylinders fixed to the crankcase; first and second vacuum cylinders fixed to the crankcase; a rotational shaft rotatably supported within the crankcase; first and second compression pistons connected to the rotational shaft and reciprocating respectively within the first and second compression cylinders; and first and second vacuum pistons connected to the rotational shaft and reciprocating respectively within the first and second vacuum cylinders; wherein each diameter of piston heads of the first and second compression pistons is smaller than each diameter of piston heads of the first and second vacuum pistons, and the first and second compression pistons are connected to the rotational shaft so as to sandwich the first and second vacuum pistons in an axial direction of the rotational shaft.

Abstract: A compressor includes a motor; a piston reciprocating by the motor; a crankcase comprising a wall portion formed with a communication hole, and the crankcase housing the piston; a cylinder body secured to an internal surface of the wall portion, the cylinder body and the wall portion defining a chamber, a capacity of the chamber increasing or decreasing by reciprocating the piston; and a cylinder head secured to an outer surface of the wall portion, and the cylinder head and the wall portion defining a flow path communicated with the chamber through the communication hole.

Abstract: There is provided a power detection circuit capable of appropriately adjusting detection voltage characteristics by using simple configuration. The power detection circuit includes a first resistor having current applied thereto to adjust a detection voltage value of input power, an element having an applied voltage and a load characteristic changed according to the input power, and a second resistor connected to the element and having current applied thereto when resistance of the element becomes relatively low, to adjust the detection voltage value of the input power. Detection voltage characteristics may be appropriately adjusted using a simple configuration.

Abstract: A vacuum machine includes: a crankcase; a cylinder body fixed to the crankcase; a cylinder head fixed to a distal end of the cylinder body; and a piston reciprocating within the cylinder body, wherein the piston includes: a piston rod; a piston head fixed to a distal end of the piston rod and defining a chamber in cooperation with the cylinder body and the cylinder head; and a check valve arranged within a space formed between the piston rod and the piston head, the piston rod and the piston head each includes a through-hole communicating with the space, and the check valve is elastically deformable within the space so as to open and close one of the through holes of the piston rod and the piston head.

Abstract: Disclosed is an amplifier circuit capable of achieving high efficiency at back off power while maintaining high output power when an amplifier of a driving stage is saturated in a multistage amplifier in which a plurality of amplifiers are connected in series to each other. In the amplifier circuit, at least two amplifiers including a first amplifier and a second amplifier, the first amplifier preceding the second the first amplifier, are connected in series to each other, the second amplifier changes input impedance according to output power from the first amplifier, and an impedance adjusting unit for adjusting output load impedance of the first amplifier is disposed between the first amplifier and the second amplifier, wherein the impedance adjusting unit optimizes the output load impedance of the first amplifier according to a change of input impedance of the second amplifier.

Abstract: A hydraulic tubing support that reduces noise transmitted to an operator due to pulsation of hydraulic oil in a junction tube. The hydraulic tubing support structure includes a pair of left and right remote control valves for generating pilot pressures for the plurality of hydraulic actuators in response to an input operation performed on each operating lever, pump-side tubes and tank-side tubes respectively extending from the respective remote control valves, a junction tube for allowing communication of the tubes guided to below a floor plate through a through hole and communication of the tubes guided to below the floor plate through a through hole, and a middle reinforcement beam extending in a right-and-left direction and fixed to the lower surface of the floor plate. The junction tube is fixed to the middle reinforcement beam in a non-contact state with the floor plate.

Abstract: According to one embodiment, a semiconductor device includes a first conductor, a second conductor, and an envelope. The first conductor includes a first radiation surface. The second conductor includes a second radiation surface. The envelope includes a first envelope portion which is composed of a first insulative material and is formed such that the first envelope portion seals a semiconductor, and a second envelope portion which is composed of a second insulative material and is formed in contact with the first radiation surface and the second radiation surface.

Abstract: According to one embodiment, a semiconductor power converter includes first and second electrical conductors opposed to each other, first and second semiconductor elements joined to a first joint surface of the first electrical conductor, first and second convex electrical conductors joined to the first and second semiconductor elements, a junction joined to the first and second convex electrical conductors and a second joint surface of the second electrical conductor, power terminals, signal terminals, and an envelope sealing the constituent members. The envelope includes a flat bottom surface which extends perpendicular to the semiconductor elements and in which first and second bottom surfaces of the electrical conductors are exposed.

Abstract: A construction machine includes an exhaust duct for discharging a lower airflow to the exterior of an engine room. An air inlet for introducing air into the exhaust duct is provided in an upper portion of the exhaust duct, and an air outlet for discharging the air from the exhaust duct is provided in a lower portion of the exhaust duct. An air passage is formed in the interior of the exhaust duct between the air inlet and the air outlet. The exhaust duct is disposed on an exhaust side of the engine room such that the air introduced into the air passage in the exhaust duct through the air inlet is discharged below the engine room from the air outlet through a discharge port, and such that a hydraulic pump provided on the exhaust side of the engine room is shielded from the discharge port by the exhaust duct.

Abstract: A construction machine includes: a lower propelling body; and an upper slewing body which is slewably mounted on the lower propelling body. The upper slewing body includes: an engine room provided with an intake opening and a discharge opening; a duct provided in the engine room so as to communicate with the discharge opening; and an exhaust gas pipe which guides exhaust gas discharged from the engine into the duct. The discharge opening and an outlet of the duct are open downward from the engine room. A portion on a distal end side of the exhaust gas pipe is inserted into the duct. The duct and the exhaust gas pipe are configured to cause the exhaust gas to be mixed with cooled air in the duct and cause the mixture of the exhaust gas and the cooled air to be discharged downward from the discharge opening.

Abstract: Provided is a solid-state image sensing device that performs an A/D conversion operation at high speed. A sample-and-hold section 12 included in an A/D converter in a CMOS image sensor includes switches S1a and S1b and capacitor C1 that sample and hold a dark signal during each cycle period, switches S2a and S2b and capacitor C2 that sample and hold a bright signal during an odd-numbered cycle period, and switches S3a and S3b and capacitor C3 that sample and hold a bright signal during an even-numbered cycle period. While a bright signal is held with switch S2b placed in a conducting state, the next bright signal can be sampled by placing switch S3a in a conducting state.

Abstract: According to one embodiment, a semiconductor device includes a first electrical conductor, a second electrical conductor, first and second semiconductors between the first and second electrical conductors, a first power terminal, a second power terminal, a signal terminal, and an insulator which covers the components. The insulator includes a flat bottom surface in which the first and second electrical conductors are exposed, a ceiling surface, a first end surface, and a second end surface. The power terminals and the signal terminal extend outwardly from the first and second end surfaces, and the ceiling surface, respectively. The first end surface, the ceiling surface, and the second end surface are formed with a parting line.

Abstract: Provided is a defroster nozzle 4 which blows out air to an inner surface of a windshield 2 of a vehicle 1. The defroster nozzle 4 includes center-duct 45 forming member 41 and two end-portion-duct forming members 50. The center-duct 45 forming member 41 forms a center duct through which the air circulates, and has a center ventilation outlet 47 through which the air in the center duct is blown out to the inner surface of the windshield 2. The two end-portion-duct 54 forming members 50 are coupled respectively to two joint end portions 42, on outer sides in the vehicle width direction, of the center-duct forming member 41. Each end-portion-duct forming member 50 forms an end-portion duct which communicates with the center duct, and each end-portion-duct forming member 50 has an end-portion ventilation outlet 55 through which the air in the end-portion duct is blown out to the inner surface of the windshield 2.

Abstract: A construction machine includes: an engine room provided with an intake opening and a discharge opening; a fan for sucking cooling air into the engine room through the intake opening; a duct provided in the engine room so as to communicate with the discharge opening and discharging the cooling air sucked into the engine room to an outside of the engine room through the discharge opening; and an exhaust gas pipe guiding exhaust gas discharged from the engine into the duct. A portion on a distal end side of the exhaust gas pipe is inserted into the duct, and the inserted portion of the exhaust gas pipe inserted into the duct is formed with an exhaust hole which causes the exhaust gas to be discharged in a direction different from a flowing direction of discharge wind in the duct through the exhaust hole.

Abstract: A construction machine includes: a lower propelling body; and an upper slewing body which is slewably mounted on the lower propelling body. The upper slewing body includes: an engine room provided with an intake opening and a discharge opening; a duct provided in the engine room so as to communicate with the discharge opening and an exhaust gas pipe which guides exhaust gas discharged from the engine into the duct. The discharge opening and an outlet of the duct are open downward from the engine room. A portion on a distal end side of the exhaust gas pipe is inserted into the duct. The duct and the exhaust gas pipe are configured to cause the exhaust gas to be mixed with cooled air in the duct and cause the mixture of the exhaust gas and the cooled air to be discharged downward from the discharge opening.

Abstract: According to one embodiment, a semiconductor device includes a first electrical conductor, a second electrical conductor, first and second semiconductors between the first and second electrical conductors, a first power terminal, a second power terminal, a signal terminal, and an insulator which covers the components. The insulator includes a flat bottom surface in which the first and second electrical conductors are exposed, a ceiling surface, a first end surface, and a second end surface. The power terminals and the signal terminal extend outwardly from the first and second end surfaces, and the ceiling surface, respectively. The first end surface, the ceiling surface, and the second end surface are formed with a parting line.

Abstract: According to one embodiment, a semiconductor power converter includes first and second electrical conductors opposed to each other, first and second semiconductor elements joined to a first joint surface of the first electrical conductor, first and second convex electrical conductors joined to the first and second semiconductor elements, a junction joined to the first and second convex electrical conductors and a second joint surface of the second electrical conductor, power terminals, signal terminals, and an envelope sealing the constituent members. The envelope includes a flat bottom surface which extends perpendicular to the semiconductor elements and in which first and second bottom surfaces of the electrical conductors are exposed.