Mitsubishi Electric Corporation

Joled Inc.

Yoshihiro Taniguchi

Akihiko Iwata

Shinsaku Kusube

Yoshiaki Koizumi

Shinji Murata

Shigeo Takata

Takahiko Kobayashi

Masaki Takata

Akihiko Saito

Kenta Yuasa

Satoshi Endo

Takanori Koike

Masahiro Ishihara

Shuhei Mizutani

Tomoki Kobayashi

Daisuke Abe

Yoshikazu Nozuki

Keiji Harada

Keiwa Tsukano

Kazuyoshi Shinozaki

Provided are a heat sink capable of suppressing overcooling of an electronic component which should not be overcooled and highly efficiently cooling only an electronic component which should be cooled, and a circuit device including the same. A heat sink includes a pipe and a cooling block. At least one projection is formed in the cooling block. The pipe is in contact with the projection. The pipe is arranged with a spacing from a portion of the cooling block other than the projection.

Heat sink and circuit device

A power converter includes a first substrate on which a module including a switching element is mounted, a second substrate on which a smoothing capacitor is mounted, and a terminal block connecting the first substrate and the second substrate, with the first and second substrates located to face each other. The terminal block includes a current path over which at least one of current flowing from the module to the smoothing capacitor and current flowing from the smoothing capacitor to the module flows.

Power converter and air-conditioning apparatus employing the same

A refrigeration cycle apparatus includes a refrigerant circuit through which refrigerant circulates, a control box in which equipment for controlling the refrigeration cycle apparatus is accommodated, and a refrigerator for cooling a heat emitting body exposed from an opening of the control box. The heat emitting body is the equipment accommodated in the control box. The refrigerator includes a cooling body in contact with the heat emitting body, and a refrigerant pipe through which the refrigerant circulating through the refrigerant circuit passes to cool the cooling body. The refrigerant pipe is in contact with the cooling body. The pipe contact surface is different from the heating-body contact surface. The cooling body has a recessed portion at which the cooling body and the heat emitting body are not in contact with each other. The recessed portion is formed in the heating-body contact surface and spaced from the control box.

Refrigeration cycle apparatus

An air-conditioning apparatus includes a refrigerant pipe through which refrigerant that flows through the refrigeration cycle passes; a pipe-side plate thermally connected to the refrigerant pipe; a control box thermally connected to the pipe-side plate and containing an electric component including a heating element; a housing of an outdoor unit, the housing containing the pipe-side plate and the control box; a positioning element fixing the pipe-side plate and the control box to each other; and a fastening element fixing the control box and the positioning element to each other. At least one side surface of the housing has a work opening. A front portion of the control box is positioned closer to the work opening in the housing, and a rear portion of the control box is positioned closer to a rear surface of the housing, the rear surface facing the side surface having the work opening.

Air-conditioning apparatus

Provided is a power conversion device including: a step-up converter unit, including a reactor to which a DC voltage is to be input, a switching element connected to the reactor in parallel, and a backflow prevention element connected to the reactor in series; a smoothing capacitor configured to smooth an output voltage from the step-up converter unit; an inverter unit configured to convert the output voltage smoothed in the smoothing capacitor into an AC voltage; a dew condensation state detection unit configured to detect a state of dew condensation, which occurs due to a cooler configured to cool the step-up converter unit and the inverter unit; and a control unit configured to control an operation of the step-up converter unit, wherein the control unit includes: a determination unit configured to determine the state of dew condensation detected by the dew condensation state detection unit; and a step-up control unit configured to control a step-up operation of the step-up converter unit based on a result of determination made by the determination unit.

Power conversion device and air-conditioning apparatus

An image display apparatus includes: a display unit which includes a display panel that displays an image on a front face, and a chassis disposed on a back face of the display panel and holding the display panel; and a first frame member disposed along at least a portion of a front periphery of the display panel, wherein the first frame member includes: a front portion disposed on the front face of the display panel; and a folding portion connected to the front portion, and having an end portion which is disposed at a back face side of the chassis by being bent, the end portion being a distal end portion relative to the front portion.

Image display apparatus and image display apparatus manufacturing method

A display apparatus including: a display panel; and a chassis structure which holds the display panel, wherein the chassis structure includes a first chassis member in which a recess whose opening opens toward a display panel side is formed, and a second chassis member which is in a plate shape, and mounted on the first chassis member, covering at least a portion of the opening of the recess.

Display apparatus

A voltage/current verifier computes, for each phase, a phase difference between phase voltage and phase current from the phase of phase voltage and the phase of phase current computed for each phase by a phase acquirer, and determines conformity if all of the computed phase differences are within a preset range. A current/current verifier computes phase differences between phase currents from the phase of phase current computed for each phase by the phase acquirer, and determines conformity if all of the computed phase differences are less than 180&#xb0;. A reporting device reports that a current transformer is incorrectly placed on a power line unless both the voltage/current verifier and the current/current verifier do not determine conformity.

Growing community of inventors

Tokyo, Japan

Yoshihiro Taniguchi