10900 patents
Page 6 of 545
Utility
Air conditioner and driving device
2 Jan 24
An air conditioner includes a compressor to compress a refrigerant used in a refrigeration cycle, a converter to generate a DC voltage, an inverter to generate three-phase AC voltages from the DC voltage, a motor to produce a driving force for driving the compressor with a plurality of coils, the three-phase AC voltages being applied to the coils, a connection switching unit to switch connection states of the coils between a first connection state and a second connection state, and a controller to detect an abnormality of the connection switching unit.
Takashi Yamakawa, Koichi Arisawa, Kenji Iwazaki, Keisuke Uemura, Shinya Toyodome
Filed: 31 Oct 16
Utility
Driving apparatus and air-conditioning apparatus
2 Jan 24
A driving apparatus includes: an inverter unit generating a three-phase alternating-current voltage from a direct-current voltage in accordance with a drive signal based on a voltage command and outputting the three-phase alternating-current voltage to a permanent-magnet motor, the permanent-magnet motor including a permanent magnet; a current detection unit detecting a motor current flowing through the permanent-magnet motor; and a control unit generating the voltage command to control an operation of the inverter unit and estimating a temperature of the permanent magnet to perform a protection operation on the inverter unit on the basis of the motor current and an overcurrent protection threshold.
Takahiko Kobayashi
Filed: 28 Mar 19
Utility
Motor drive device, electric blower, electric vacuum cleaner, and hand dryer
2 Jan 24
A motor drive device includes a single-phase inverter converting a direct-current voltage output from a power supply that is a direct-current power supply into an alternating-current voltage having a high level, low level, or zero level potential.
Yuji Takayama, Haruka Matsuo, Kazunori Hatakeyama
Filed: 23 Mar 18
Utility
Power semiconductor module and power converter
2 Jan 24
A power semiconductor module includes a semiconductor switching element, a gate control pattern to which a gate electrode of the semiconductor switching element is connected, a source control pattern to which a source electrode of the semiconductor switching element is connected, a capacitor to form a low-pass filter, a capacitor arrangement pattern to which one end of the capacitor is connected, and a wire.
Junichi Nakashima
Filed: 27 Aug 19
Utility
Semiconductor device
2 Jan 24
An object is to provide a semiconductor device capable of reducing inductance between a high potential terminal and a low potential terminal while achieving downsizing of the semiconductor device.
Hidetaka Matsuo, Ryo Goto, Yasutaka Shimizu
Filed: 15 Nov 21
Utility
Optical module having restriction body fixed to stem and having a linear thermal expansion coefficient smaller than that of the stem
2 Jan 24
An optical module includes: a stem including a first surface and a second surface opposite to the first surface; a thermoelectric cooler including a heat-releasing substrate fixed to the first surface; a semiconductor laser element attached to the thermoelectric cooler; a cap fixed to the first surface and covering the thermoelectric cooler and the semiconductor laser element; a lens fixed to the cap; and a restriction body fixed to the second surface.
Akio Shirasaki, Tatsuki Otani, Norio Okada
Filed: 9 Feb 18
Utility
Deformation Calculation Device, Deformation Measurement Device, and Deformation Calculation Method
28 Dec 23
The deformation calculation device includes: a deformation calculation unit which obtains a simply-calculated deformation of a measurement region by digital image correlation; a viewpoint change elimination unit which obtains a provisional deformation by subtracting, from the simply-calculated deformation, an apparent strain that is back-calculated on an assumption that there is no deformation in the measurement region; and a uniting unit which outputs, as a deformation of the measurement region from the first image-taking period to the second image-taking period, a deformation resulting from averaging the provisional deformations obtained by applying the deformation calculation unit and the viewpoint change elimination unit through sequential selection of different first images from the first image group and sequential selection of different second images from the second image group.
Shigetaka SAJI, Norihiko HANA
Filed: 14 Oct 21
Utility
Guide Display Control Apparatus, Guide Display Control Method, and Route Guiding System
28 Dec 23
A guide display control apparatus includes: a detection signal obtaining unit to obtain a detection signal including identification information of a facility user who has entered a monitoring area from an approach detector that detects entry of the facility user into the monitoring area; a destination obtaining unit to obtain a plurality of destinations associated with the identification information included in the detection signal; a travel time predicting unit to search for routes from the monitoring area to the respective destinations, and predict a travel time of the facility user from the monitoring area to each of the destinations on the basis of a search result of the routes; and a display data generating unit to generate display data to display a guide diagram including arrows each indicating a corresponding one of the routes to the respective destinations and the travel time to each of the destinations.
Saki MATSUI, Reiko SAKATA, Tatsunari KATAOKA, Naoki FURUHATA, Atsushi SHIMADA
Filed: 11 Sep 23
Utility
Guide Display Control Apparatus, Guide Display Control Method, and Route Guiding System
28 Dec 23
A guide display control apparatus includes: a detection signal obtaining unit to obtain a detection signal including identification information of a facility user who has entered a monitoring area from an approach detector that detects entry of the facility user into the monitoring area; a schedule obtaining unit to obtain a schedule indicating a visit order to a plurality of destinations, the schedule being associated with the identification information included in the detection signal obtained; a next destination specifying unit to specify a next destination in the visit order among destinations that the facility user has not visited yet in the plurality of destinations on the basis of the schedule obtained; and a display data generating unit to search for a route from the monitoring area to the next destination specified by the next destination specifying unit and generate display data for displaying a guide diagram of the route.
Saki MATSUI, Reiko SAKATA, Tatsunari KATAOKA, Atsushi SHIMADA, Naoki FURUHATA
Filed: 13 Sep 23
Utility
Ranging Device, Ranging Method and Computer Readable Medium
28 Dec 23
A sensitivity adjustment unit (102) adjusts a responsivity of a light receiving element (400) so that the responsivity becomes high.
Masashi FUKUNAGA
Filed: 13 Sep 23
Utility
Semiconductor Device and Multi-Turn Encoder
28 Dec 23
An environmental power generation device outputs power generation charges to a power supply line to which a capacitor is connected.
Akio KAMIMURAI, Takeshi MUSHA
Filed: 4 Nov 20
Utility
Temperature Measuring Device and Temperature Measuring Method
28 Dec 23
A temperature measuring device includes: a thermal infrared illuminating unit that irradiates with thermal infrared light a target whose temperature to be measured; a thermal infrared illumination image acquiring unit that acquires a thermal infrared illumination image including an image of the target; a thermal infrared image acquiring unit that acquires a thermal infrared image including the image of the target; a visible light image acquiring unit that acquires a visible light image including the image of the target; a calculating unit that calculates an image expansion amount of the image of the target based on the acquired visible light image and the acquired IR illumination image; an adding unit that adds the calculated image expansion amount to luminance of the image of the target; and a measuring unit that measures a temperature of the target based on the image of the target with the image expansion amount.
Satoi KOBAYASHI, Takayuki YANAGISAWA
Filed: 13 Sep 23
Utility
Lighting Device, Air Conditioner, and Control System
28 Dec 23
An air conditioner includes a housing including an illumination opening at a position viewable by a user; a blower provided in an airflow path connecting an inlet and outlet; a light emitter provided in the housing viewable through the illumination opening and including a light incident portion to receive light emitted from a first light source and a first light emission portion to emit first light generated from the light and including light simulating natural light; and at least one light extractor emitting second light that is part of the light received by the light emitter that reaches an edge portion of the light emitter without being emitted as the first light or second light received from the first light source or a second light source different from the first light source without intervention of the light emitter.
Satoru OKAGAKI, Yusuke FUJII, Haruka SUZUKI, Muneharu KUWATA, Kuniko KOJIMA
Filed: 8 Sep 23
Utility
Rotor of Rotating Electric Machine and Rotating Electric Machine
28 Dec 23
A bipolar rotor of a rotating electric machine is such that flexural rigidity asymmetry of a rotor main portion is adjusted using a cross slot provided in a rotor core, and flexural rigidity asymmetry of a rotor stepped portion is adjusted using a cutout groove provided in the rotor stepped portion, whereby optimization is achieved by combining the flexural rigidity asymmetry of the rotor main portion and the flexural rigidity asymmetry of the rotor stepped portion, and vibration in each double frequency vibration flexural vibration mode is restricted over a whole region of driving rotational speed.
Saya OKANO, Go KAJIWARA
Filed: 1 Feb 21
Utility
Heat Exchanger and Refrigeration Cycle Apparatus
28 Dec 23
A heat exchanger includes: a fin extending in a widthwise direction along an air flow direction and extending in a longitudinal direction crossing the air flow direction; and a heat transfer tube passing through the fin.
Tsuyoshi MAEDA, Akira YATSUYANAGI, Satoru YANACHI, Hiroshi CHIMURA, Tomohiko TAKAHASHI
Filed: 27 Nov 20
Utility
Power Conversion Device
28 Dec 23
An object is to obtain a power conversion device that can prevent ripple from increasing owing to change in switching frequency.
Hayato TAKEUCHI, Takato TOI, Takaharu ISHIBASHI
Filed: 8 Dec 20
Utility
Power Conversion Device
28 Dec 23
A power conversion device such that the number of parts is reduced, and a secondary side semiconductor element can be cooled using a simple configuration and at low cost, is provided.
Kei HAYASE
Filed: 12 Jan 23
Utility
Power Conversion Device
28 Dec 23
The power conversion device includes a transformer having primary and secondary windings, an inverter circuit that carries out a supply of power to the primary winding, a rectifying circuit that rectifies power from the secondary winding, a cooler that cools semiconductor elements configuring the inverter circuit and semiconductor elements configuring the rectifying circuit, and a temperature detector that detects a temperature of the semiconductor elements configuring the inverter circuit and the semiconductor elements configuring the rectifying circuit.
Yuya TAKAHASHI
Filed: 30 Nov 22
Utility
Doherty Amplifier
28 Dec 23
A Doherty amplifier includes: a first filter circuit to output a first input signal obtained by attenuating an input signal lying in a first frequency band, and to output a second input signal obtained by allowing passage of an input signal lying in a second frequency band; a second filter circuit to output a third input signal obtained by attenuating an input signal lying in the first frequency band, and to output a fourth input signal obtained by attenuating an input signal lying in the second frequency band; a first amplifier to operate as an auxiliary amplifier when receiving the first input signal, and to operate as a main amplifier when receiving the second input signal; and a second amplifier tip operate as the main amplifier when receiving the third input signal, and to operate as the auxiliary amplifier when receiving the fourth input signal.
Yuji KOMATSUZAKI, Shuichi SAKATA, Koji YAMANAKA
Filed: 8 Sep 23
Utility
Communication Satellite System, Earth-side Control Facility, Ground Facility, Artificial Satellite, Communication Ground Center, and Transmission Route Search Device
28 Dec 23
In a communication satellite system (10), communication satellites (20) that fly on respective orbital planes such as an orbit (A), an orbit (B), and an orbit (C) each include a fore-aft communication device for communicating with other communication satellites (20) flying in front of and behind that communication satellite (20).
Hisayuki MUKAE
Filed: 28 Jul 21