Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Electric Corporation

Sony Corporation

Adv Antest Corporation

Mitsubishi Denki K.k.

Ricoh Company, Ltd.

Kabushiki Kaisha Daini Seikosha

Mitsubishi Electronic Corporation

Tohatsu Corporation

Mitsubishi Electric Coproration

Hiroshi Okuda

Toshihisa Ogura

Yoshinori Saikawa

Eiji Yuasa

Nobuhiro Kihara

Naoki Itoi

Futoshi Aida

Yasuo Iwasaki

Masayoshi Maeda

Tomoki Takizawa

Kimihiko Tanaya

Fumito Uemura

Yusuke Naruse

Hiroshi Koizumi

Hitoshi Kimura

Hidetoshi Ichioka

Kensuke Ohnuma

Toshiyuki Katsumoto

Kenji Ishi

Yoshihisa Honjoh

Masaki Yamada

Masaya Inoue

Koji Nakamura

Hiroyuki Kawamoto

Shuji Hirai

Katsumi Kojima

Hiroshi Miyamoto

Tohru Kurata

Hideki Umemoto

Yasunobu Kato

Takahiro Urakabe

Masuyoshi Kurokawa

Toshiyuki Kiyokawa

Takayoshi Nagai

Shigeki Harada

Toru Ikeda

Seiichiro Iwase

Kazunari Tonami

Koichi Chotoku

Yuichi Muramoto

Masayuki Ozawa

Yuuya Tanaka

Shin Nemoto

Haruki Nakajima

Shinji Kawaguchi

Hisao Hayama

Satoru Nakanishi

Fumio Abe

Noritsuna Hashimoto

Kazu Matsunaga

Kensuke Onuma

Yoshihito Kondo

Mizuki Murata

Kenzo Awazu, Deceased

Tetsuya Yamaguchi

Kensuke Oonuma

Kyoichi Kamoshita

Chie Nagao

Kouji Shingai

Toshio Honda

Junpei Tsujiuchi

Yoshihisa Honjo

Provided is an elevator device, including: a cage; a car entrance frame including: entrance columns provided at a car entrance of the cage; and an entrance top plate provided on a top side of the car entrance; a car door configured to open and close the car entrance; a projector, which is provided to the car entrance frame so as to be capable of projecting information onto an image display surface provided at a landing when the car door is opened upon arrival of a car at the landing; and a control device configured to control respective operations of the car door and the projector. When the control device controls the car door to open, the control device controls the projector to project the information onto the image display surface.

Elevator device

In an elevator operation panel, a base of a casing includes a back plate portion, a lateral plate portion, and a vertical plate portion. An outer surface of the lateral plate portion, which faces the exterior of the casing, and a vertical direction end surface of the vertical plate portion on the lateral plate portion side are disposed in an identical plane. An L-shaped slit is provided between the back plate portion and the lateral plate portion. The slit includes a rectilinear portion, and a projecting portion that projects into the back plate portion. In a condition where the lateral plate portion is bent relative to the back plate portion, a surface of the lateral plate portion that faces the rectilinear portion overlaps a surface of the back plate portion on an opposite side to a wall.

Elevator operation panel

In an elevator operation panel, a front part of a casing includes a frame body and a front surface plate. The frame body includes a first vertical frame and a second vertical frame. A fixing member is laid across the first vertical frame and the second vertical frame. A holding member for holding the front surface plate on the frame body is fixed to the fixing member. The holding member includes a holding portion that overlaps a vertical direction end portion of a front surface of the front surface plate, and a fastening portion that projects rearward from the holding portion and is screwed to the fixing member.

A high-frequency discharge ignition device includes a current supply device which supplies an AC current to a spark discharge path formed in a gap of an ignition plug, a control device which controls the operation of the current supply device, and a voltage detection device which outputs a signal of a section where a magnetic induction voltage of a primary coil generated after a switch element of an ignition coil device is placed in a shutoff state exceeds a predetermined voltage, and the control device determines the timing when the spark discharge path has been formed in the gap of the ignition plug according to an output signal of the voltage detection device and operates the current supply device based on the timing when the spark discharge path has been formed in the gap of the ignition plug to supply the AC current to the spark discharge path.

High-frequency discharge ignition device

An internal combustion engine control apparatus includes: an ignition coil including a primary coil and a secondary coil that are magnetically coupled to each other; a first switch element for turning on and off a current to the primary coil; and a spark plug, for igniting an air-fuel mixture in an internal combustion engine by using a spark discharge caused by switching the first switch element from the ON state to the OFF state. The internal combustion engine control apparatus is configured to: determine occurrence of one of an abnormality in a discharge voltage and a misfire of the spark plug, when the calculated time duration in which a voltage of the primary coil after the switching of the first switch element from the ON state to the OFF state is above a predetermined comparison reference voltage does not fall within an allowable range.

Internal combustion engine control apparatus

An ignition apparatus includes: sparking coil supplying a sparking plug with a high voltage; an energy supply device supplying the sparking coil with energy; a first switch disposed therebetween; and a control device controlling the first switch's conduction. The energy supply device has a DC power supply, a resonance coil connected to the DC power supply, a sparking capacitor connected to the resonance coil, and a second switch disposed between the sparking capacitor and an earth, and charges the sparking capacitor to have a voltage value larger than that of the DC power supply in absolute value by making the resonance coil and the sparking capacitor generate an LC resonance when the second and first switches are turned ON and OFF, respectively, according to an instruction from the control device whereas supplying the sparking coil with energy when the second and first switches are operated inversely according to another instruction.

Ignition apparatus

An electric power supply system includes: an AC generator having a drooping characteristic; a rectification section for converting AC output of the AC generator to DC; a load having an electric storage device supplied with power from the AC generator; and a control section provided between the rectification section and the load. The control section controls the AC generator so that the AC generator operates at predetermined voltage lower than output voltage corresponding to the maximum power operation point of the AC generator.

Electric power supply system

A power supply device includes: a first switching element and a flywheel semiconductor element which are connected in series to a first DC power source in this order; and a reactor and a second DC power source which are connected in series in this order to a node between the first switching element and the flywheel semiconductor element. A second switching element and a charge circuit for charging a line between the first switching element and the second switching element are interposed between the reactor and the second DC power source. Abnormality of each element is determined from a voltage of each portion of the power supply device measured when the first and second switching elements and the flywheel semiconductor element are driven and controlled.

Power supply device and method of determining abnormality in power supply device

In order not to deteriorate the detection properties of an ion current that monitors a combustion state even when a smolder leak is present in an ignition plug of an internal combustion engine, an ion current detector includes an ignition plug of an internal combustion engine, an ignition coil which supplies a high voltage to the ignition plug, a controller which sends an ignition command, a bias capacitor which supplies a bias voltage to the ignition coil, an ignition capacitor which is connected to a primary side winding of the ignition coil, a DC power supply which charges the ignition capacitor and the bias capacitor, a current detecting unit which detects a current flowing through the ignition plug, an ion current detecting unit which detects an ion current from the current detected by the current detecting unit, and a Zener diode which restricts a charging voltage of the bias capacitor.

Ion current detector

Control panel for elevator

Growing community of inventors

Chiyoda-ku, Japan

Hiroshi Okuda