An arrangement for a vehicle, in particular a rail vehicle, or for a building, has a control system adapted to control a plurality of different devices, a cabinet having a lock that can be locked in order to prevent access to a valuable device within the cabinet, and a control unit of the control system adapted to remotely control unlocking the lock. The control system is adapted to unlock the lock automatically if a predetermined condition is fulfilled or to unlock the lock on demand.

This power conversion device for a railway vehicle includes a first radiation fin radiating heat from a semiconductor device and a second radiation fin arranged at a prescribed interval from the first radiation fin in a traveling direction for radiating heat from the semiconductor device. At least either one of the first and second radiation fins includes an air duct formed by partially not providing a plurality of fin portions.

In a SiC power MISFET having a lateral surface of a trench formed in an upper surface of a SiC epitaxial substrate as a channel region, a silicon carbide semiconductor device having low resistance, high performance, and high reliability is realized. As a means therefor, a SiC power MISFET is formed as an island-shaped unit cell on an upper surface of an n-type SiC epitaxial substrate that is provided with a drain region on a bottom surface thereof, the SiC power MISFET including: an n-type current diffusion region that surrounds a p-type body layer contact region and an n-type source region in the indicated order in a plan view; a p-type body layer and an n-type JFET region; a trench that is formed on the body layer so as to span between the source region and the current diffusion region adjacent each other in a first direction and extends in the first direction; and a gate electrode embedded in the trench with a gate insulating film therebetween.

In a SiC power MISFET having a lateral surface of a trench formed in an upper surface of a SiC epitaxial substrate as a channel region, a silicon carbide semiconductor device having low resistance, high performance, and high reliability is realized. As a means therefor, a SiC power MISFET is formed as an island-shaped unit cell on an upper surface of an n-type SiC epitaxial substrate that is provided with a drain region on a bottom surface thereof, the SiC power MISFET including: an n-type current diffusion region that surrounds a p-type body layer contact region and an n-type source region in the indicated order in a plan view; a p-type body layer and an n-type JFET region; a trench that is formed on the body layer so as to span between the source region and the current diffusion region adjacent each other in a first direction and extends in the first direction; and a gate electrode embedded in the trench with a gate insulating film therebetween.

A cooling device for a railroad vehicle that cools a heat generating body housed in a storage box set on the floor of the railroad vehicle includes a heat conduction plate configuring a part of a side surface of the storage box, the heat generating body being mounted on one surface side of the heat conduction plate, a plurality of heat pipes inclined to project from the other surface side to an upper side of the heat conduction plate, a plurality of fins fixed to the plurality of heat pipes, and a cover that includes opening sections, and covers the cooling device. A total of areas of the opening sections located on the base side of the heat pipes is formed larger than a total of areas of the opening sections located on the distal end portion side of the heat pipes.

A power converter for a railroad vehicle includes an air guide duct that takes air from a lateral side of one of a first heat radiating fin and a second heat radiating fin, guides the taken air to a region between the first heat radiating fin and the second heat radiating fin, and then guides the taken air to an end of the other of the first heat radiating fin and the second heat radiating fin in a running direction when the railroad vehicle is running.

A rail vehicle control relay board includes a main frame, a mother board and a daughter board assembly which are arranged in the main frame, the main frame includes a board face mounting frame and a daughter board mounting frame which protrudes from the board face mounting frame, the mother board is arranged in the board face mounting frame, and multiple daughter board assemblies perpendicular to the mother board are arranged side by side in the daughter board mounting frame, the daughter board assemblies are electrically connected to the mother board, and multiple first connectors configured to perform output outwards are arranged on the mother board. The rail vehicle control relay board has a high strength, and may reduce the daughter board loosening faults, extend a wiring space and increase the number of relays arranged.

A rail vehicle control relay board includes a main frame, a mother board and a daughter board assembly which are arranged in the main frame, the main frame includes a board face mounting frame and a daughter board mounting frame which protrudes from the board face mounting frame, the mother board is arranged in the board face mounting frame, and multiple daughter board assemblies perpendicular to the mother board are arranged side by side in the daughter board mounting frame, the daughter board assemblies are electrically connected to the mother board, and multiple first connectors configured to perform output outwards are arranged on the mother board. The rail vehicle control relay board has a high strength, and may reduce the daughter board loosening faults, extend a wiring space and increase the number of relays arranged.

A high voltage equipment box for a rail vehicle includes a box body and electric equipment arranged in the box body, two ends of the box body in a width direction of the vehicle extend to respective skirt plates, and an avoidance gap is provided at a bottom of each of the two ends of the box body, a bottom of each of the skirt plates is fixed at the respective avoidance gap, a top of the box body extends to a position above a bottom beam of a vehicle body, and a bottom of the box body is flush with a bottom plate of the vehicle body and forms a part of the bottom plate of the vehicle body.

An assembly for connecting two drive sides of a drive train of a rail vehicle includes a first drive side having a disc-shaped first coupling body at one end, a second drive side having a disc-shaped second coupling body at one end and a disc-shaped intermediate body disposed between the first coupling body and the second coupling body. The intermediate body is coupled to both the first coupling body and the second coupling body in such a way that a rotational movement of one of the two drive sides is transmitted to the other drive side through the coupled body.