Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Hiroyuki Yahara

Yuji Shirakata

Kenta Fujii

Tomohito Fukuda

Takashi Kumagai

Koji Nakajima

Teruo Miyamoto

Motoo Takahashi

Tatsuro Hirose

Mitsuhiro Kawaguchi

Hiroyuki Kiyonaga

Takaaki Uda

Yuta Yoshimi

A power conversion device includes an electronic component, a first printed circuit board, a first cooling body, a second printed circuit board, a second cooling body, and a first wiring member. The power conversion device further includes a first insulating member. On a first main surface of the first printed circuit board, a first joint portion to which the first wiring member is joined is provided. Between a second main surface of the first printed circuit board and the first cooling body, the first insulating member is arranged on a rear surface of at least the first joint portion.

Power conversion device

A circuit device capable of significantly improving heat dissipation performance of a printed circuit board without increasing the size includes a printed circuit board, a mounted component, a non-solid metal spacer, a cooler, and a resin layer. The mounted component is at least partially disposed on at least one main surface of printed circuit board. The non-solid metal spacer is disposed at least on one main surface of the printed circuit board. The cooler is disposed at the non-solid metal spacer on the opposite side to the printed circuit board. The resin layer is disposed between the non-solid metal spacer and the cooler. The non-solid metal spacer has a shape that allows at least one hollow portion to be formed between the printed circuit board and the cooler.

Circuit device and power conversion device

A projecter having a lamp, a lamp box containing the lamp, an outlet fan for discharging air from the lamp box, an optical system member which receives a light beam from the lamp and outputs an image light, an optical system box containing the optical system member, and an inlet fan for blowing outside air into the optical system box. The projector also has a first ventilating duct that directs the outside air blown in by the inlet fan into the lamp box.

Projector with inlet fan, outlet fan and ventilation duct structure for cooling an optical system

Growing community of inventors

Tokyo, Japan

Hiroyuki Yahara