Patents by Inventor Tadashi Murakami
Tadashi Murakami has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9958133Abstract: An optical lens includes: a first lens surface which defines a space for housing a light emitting diode (LED) light source; a second lens surface formed in a convex shape; and a third lens surface formed continuously from a rear edge portion of the second lens surface, which is on a side opposite an illumination target side. The first lens surface includes a first light-entering surface through which a portion of light from the LED light source enters, and a second light-entering surface through which another portion of the light enters. The third lens surface totally reflects, to a substrate, at least a portion of the light. An angle between the third lens surface and a principal surface of the substrate on a virtual plane which includes an optical axis is smaller than an angle between the second light-entering surface and the principal surface on the virtual plane.Type: GrantFiled: July 20, 2016Date of Patent: May 1, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Jun Hirai, Tadashi Murakami
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Patent number: 9882444Abstract: A terminal block is fixed to a frame holding a stator and in phase with the stator whereas a part of an outside wire is fixed to a case. Hence, a bus bar extracted from a connection plate is welded to the terminal block hardly under the influence of a tolerance caused by integration of components and a tolerance of assembly. Even when a load applied from the outside gives rise to a phase difference between the case and the frame, a tolerance can be absorbed by the outside wire. Accordingly, a load applied to a weld portion of the terminal block and the bus bar can be reduced.Type: GrantFiled: April 19, 2013Date of Patent: January 30, 2018Assignee: Mitsubishi Electric CorporationInventors: Tadashi Murakami, Kouichi Ojima, Masaya Inoue
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Patent number: 9874662Abstract: An illumination device includes a light source, a device body to which the light source is mounted, and an optical member configured to control light distribution of light emitted from the light source. The light source includes LEDs arranged in a matrix form or a linear form. The optical member includes a lens portion configured to control light distribution of the LEDs on a row-by-row basis. The lens portion includes a recessed incidence portion on which the light emitted from the LEDs is incident, an elongated emission portion opposite to the incidence portion, and a pair of reflection portions which interconnects the incidence portion and the emission portion along a longitudinal direction thereof and totally reflects the light incident from the incidence portion. The emission portion is formed to have a plurality of successive convex surfaces when seen in a cross section taken along the longitudinal direction thereof.Type: GrantFiled: September 11, 2015Date of Patent: January 23, 2018Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ohta, Tadashi Murakami
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Patent number: 9849984Abstract: A lighting apparatus includes a plurality of LEDs arranged in a row on an elongated wiring board; and a lens covering all the LEDs and controlling distribution of light emitted from each LED. An optical axis of the light emitted from each LED is orthogonal to the wiring board. The lens has a light emitting surface that controls distribution of the light emitted from each LED. When the light emitting surface is divided into at least three regions, the lens performs light distribution such that light radiated from a region is distributed in a direction tilted with respect to the optical axis of the light emitted from the LED. Thus, asymmetric distribution of light is achieved when the optical axis of the light from the LED is the axis of symmetry, and further, the luminous flux in the direction tilted with respect to the optical axis is increased most.Type: GrantFiled: April 11, 2014Date of Patent: December 26, 2017Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Takashi Ohta, Tadashi Murakami
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Publication number: 20170350580Abstract: A luminaire includes a radio wave sensor and a luminaire body. The luminaire body includes a first plate to be attached to a building surface and a second plate facing each other forming an internal space. The luminaire body holds the radio wave sensor between the first plate and the second plate. The radio wave sensor includes an antenna for transmitting and receiving the radio waves. The luminaire body includes an opening and a limiter. The opening is formed in the second plate to allow radio waves transmitted from the antenna to exit to an outside of the luminaire body. The limiter is provided between the antenna and the opening to limit a radiation area of the radio waves transmitted from the antenna.Type: ApplicationFiled: June 2, 2017Publication date: December 7, 2017Inventors: Yoshiaki HONDA, Takaaki UKEDA, Tatsuo MASUDA, Tadashi MURAKAMI, Shigeo GOTOH
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Publication number: 20170343199Abstract: A luminaire includes a radio wave sensor, a luminaire body and a cover. The radio wave sensor is configured to detect, using radio waves, movement of an object within a detection area by a Doppler Effect due to the movement of the object. The luminaire body holds the radio wave sensor. The cover is attached to the luminaire body and covers the radio wave sensor, the cover allowing the radio waves to pass through. The radio wave sensor includes an antenna for transmitting/receiving the radio waves. An antenna face (receiving surface) of the antenna for receiving the radio waves is inclined relative to the cover.Type: ApplicationFiled: May 24, 2017Publication date: November 30, 2017Inventors: Takaaki UKEDA, Yoshiaki HONDA, Shigeo GOTOH, Tadashi MURAKAMI
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Publication number: 20170343663Abstract: A sensor device includes a radio wave sensor and a signal processor. The signal processor includes an identifier and a noise remover configured to remove, from a second sensor signal, at least one frequency component determined as a noise component by the identifier. The identifier compares a signal intensity of each of the frequency components with one or more signal intensities of other frequency components. When a signal intensity of a first frequency component is greater than signal intensities of one or more second frequency components located in the vicinity of the first frequency component by an extent exceeding a threshold range, the identifier determines the first frequency component as the noise component.Type: ApplicationFiled: May 23, 2017Publication date: November 30, 2017Inventors: Tatsuo MASUDA, Tadashi MURAKAMI, Shigeo GOTOH
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Publication number: 20170288480Abstract: While lamination of steel sheets to be included in a stator core having a plurality of tooth portions is performed through swaging at yoke portions and through swaging at tooth portions, the stator core is formed in such a way as to include the tooth portion having a portion that is pressed into another steel sheet through swaging and the tooth portion having no portion that is pressed into another steel sheet through swaging.Type: ApplicationFiled: January 15, 2015Publication date: October 5, 2017Applicant: Mitsubishi Electric CorporationInventors: Tadashi MURAKAMI, Naomi KIKUCHI, Atsushi SAKAUE, Tatsuro HINO, Akihiro YAMAMURA, Shogo OKAMOTO, Shinji NISHIMURA, Masaya INOUE
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Publication number: 20170063201Abstract: Provided is an electric motor capable of cooling a stator without being increased in size with a small number of components and even with simple work. The electric motor includes ring-shaped sealing members (34) having flexibility and being arranged on an inner diameter side of a stator coil (22) so as to surround inner diameter portions of coil ends. Cooling oil flowing from an upper part of a housing into the housing flows downward through coil end oil paths (37, 38) formed by the sealing members (34), coil end covers (32, 33), and the coil ends.Type: ApplicationFiled: February 11, 2016Publication date: March 2, 2017Applicant: Mitsubishi Electric CorporationInventors: Yoshiaki KITTA, Manabu YOSHINORI, Tadashi MURAKAMI, Yukitaka SAKATA, Katsunari TAKAGI, Koichi OJIMA, Masaya INOUE
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Publication number: 20170030548Abstract: An optical lens includes: a first lens surface which defines a space for housing a light emitting diode (LED) light source; a second lens surface formed in a convex shape; and a third lens surface formed continuously from a rear edge portion of the second lens surface, which is on a side opposite an illumination target side. The first lens surface includes a first light-entering surface through which a portion of light from the LED light source enters, and a second light-entering surface through which another portion of the light enters. The third lens surface totally reflects, to a substrate, at least a portion of the light. An angle between the third lens surface and a principal surface of the substrate on a virtual plane which includes an optical axis is smaller than an angle between the second light-entering surface and the principal surface on the virtual plane.Type: ApplicationFiled: July 20, 2016Publication date: February 2, 2017Inventors: Jun HIRAI, Tadashi MURAKAMI
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Patent number: 9557029Abstract: A lighting device 1 includes a planar light-emitting panel 4 and a translucent material 5 disposed on a light-emitting surface side of the planar light-emitting panel 4. The planar light-emitting panel 4 has a light-emitting region 4A and a non-light-emitting region 4B. The translucent material 5 has a reflection part 51 in a region facing the non-light-emitting region 4B. Light emitted from the planar light-emitting panel 4 and guided into the translucent material 5 is reflected by the reflection part 51 and emitted to the front side of the non-light-emitting region 4B. Accordingly, the front side of the non-light-emitting region 4B does not become a dark section, so that it is capable of increasing the light irradiation region and giving the light irradiation surface having uniform illuminance even if the plural lighting devices 1 are arranged in a matrix form.Type: GrantFiled: February 20, 2014Date of Patent: January 31, 2017Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Osamu Tanahashi, Yoshiyuki Miyake, Tadashi Murakami, Hideharu Kawachi
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Patent number: 9518717Abstract: A lighting device 1 includes a planar light-emitting panel 4 and a translucent material 5 disposed on a light-emitting surface side of the planar light-emitting panel 4. The planar light-emitting panel 4 has a light-emitting region 4A and a non-light-emitting region 4B. The translucent material 5 has a reflection part 51 in a region facing the non-light-emitting region 4B. Light emitted from the planar light-emitting panel 4 and guided into the translucent material 5 is reflected by the reflection part 51 and emitted to the front side of the non-light-emitting region 4B. Accordingly, the front side of the non-light-emitting region 4B does not become a dark section, so that it is capable of increasing the light irradiation region and giving the light irradiation surface having uniform illuminance even if the plural lighting devices 1 are arranged in a matrix form.Type: GrantFiled: February 20, 2014Date of Patent: December 13, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Osamu Tanahashi, Yoshiyuki Miyake, Tadashi Murakami, Hideharu Kawachi
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Publication number: 20160294257Abstract: An electric rotating machine that can raise the utilization efficiency of cooling oil is obtained. In an rotation axle, there are provided an oil flow path having a predetermined length from an end of the rotation axle and a flow path hole that communicates with the oil flow path and has an opening toward the inside of the electric rotating machine; a supporting member includes a cylinder section and a disk section that partitions the cylinder section in the axis direction, and a discharging hole is provided at an end of the cylinder section; between the flow path hole and the discharging hole, there is provided a partition plate that encloses a space formed by the supporting member and the rotation axle and guides cooling oil traveling from the flow path hole to the inside of the electric rotating machine to the discharging hole.Type: ApplicationFiled: May 21, 2015Publication date: October 6, 2016Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tadashi MURAKAMI, Yukitaka SAKATA, Yoshiaki KITTA, Katsunari TAKAGI, Koichi OJIMA, Masaya INOUE
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Patent number: 9420660Abstract: A controller of a lighting fixture is configured to set a light modulation level of an LED to a first light modulation level in a period from a beginning of a night time slot until when a predetermined first time period elapses, regardless of a detection result of a human detecting sensor, and set the light modulation level of the LED to a second light modulation level that is lower than the first light modulation level when the first time period elapses. The controller is configured to set, when the human detecting sensor detects a person in a state where the light modulation level of the LED is set to the second light modulation level, the light modulation level of the LED to the first light modulation level for a predetermined time period.Type: GrantFiled: October 24, 2013Date of Patent: August 16, 2016Assignee: Panasonic Intellectual Property Management Co., Ltd.Inventors: Tadashi Murakami, Shigeo Gotou
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Patent number: 9416948Abstract: A light-emitting module includes: a board; and a plurality of light sources arranged in a two-dimensional array on the board and including a plurality of color temperatures. In a first direction of the two-dimensional array, light sources having a uniform color temperature are successively arranged. The number of light sources having a uniform color temperature and successively arranged in each array line in the first direction is less than or equal to half of the total number of light sources in the array line in the first direction.Type: GrantFiled: July 22, 2014Date of Patent: August 16, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Kyohei Nakamura, Yuuya Yamamoto, Tadashi Murakami
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Publication number: 20160077243Abstract: An illumination device includes a light source, a device body to which the light source is mounted, and an optical member configured to control light distribution of light emitted from the light source. The light source includes LEDs arranged in a matrix form or a linear form. The optical member includes a lens portion configured to control light distribution of the LEDs on a row-by-row basis. The lens portion includes a recessed incidence portion on which the light emitted from the LEDs is incident, an elongated emission portion opposite to the incidence portion, and a pair of reflection portions which interconnects the incidence portion and the emission portion along a longitudinal direction thereof and totally reflects the light incident from the incidence portion. The emission portion is formed to have a plurality of successive convex surfaces when seen in a cross section taken along the longitudinal direction thereof.Type: ApplicationFiled: September 11, 2015Publication date: March 17, 2016Inventors: Takashi OHTA, Tadashi MURAKAMI
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Publication number: 20160010810Abstract: A light source unit which constitutes the present illumination device includes a planar light-emitting panel and a translucent material. The planar light-emitting panel has a light-emitting region from which light is emitted and a non-light-emitting region from which light is not emitted. The translucent material has a light incident surface which faces the light-emitting region and an inclined surface which faces the non-light-emitting region. The light incident surface is smaller than the light-emitting region. According to this configuration, even when a misalignment occurs between the planar light-emitting panel and the translucent material, the non-light-emitting region does not face the light incident surface, so that a front direction of the non-light-emitting region does not become dark section, and thus an appearance of the illumination device is improved. Moreover, the planar light-emitting panel and the translucent material do not need to be accurately arranged, so that higher yield is achieved.Type: ApplicationFiled: February 21, 2014Publication date: January 14, 2016Inventors: Osamu TANAHASHI, Yoshiyuki MIYAKE, Tadashi MURAKAMI, Hideharu KAWACHI
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Patent number: 9227727Abstract: A lighting system includes a lighting apparatus provided along one side of an aisle and a specular reflection plate provided along the other side of the aisle to reflect the light emitted from the lighting apparatus toward a region where the lighting apparatus is provided. According to the above configuration, the lighting apparatus can illuminate the region where the lighting apparatus is provided. Therefore, it is possible to effectively illuminate a cabin of an aircraft with less lighting apparatuses as compared to conventional lighting apparatuses which are provided along both sides of the aisle. Moreover, since the number of the lighting apparatuses can be reduced, it is possible to improve fuel efficiency of the aircraft by reducing the total weight of the aircraft.Type: GrantFiled: April 11, 2014Date of Patent: January 5, 2016Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tadasi Nisimura, Youji Tachino, Atsushi Motoya, Takashi Ohta, Hiroshi Kido, Junichi Hasegawa, Shigeo Gotoh, Nobuyuki Matsui, Tadashi Murakami
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Patent number: 9207308Abstract: A doppler sensor includes a doppler signal generation unit and a determining unit. The doppler signal generation unit serves to transmit an electric wave to a detection range and receiving electric waves from a detection range, and generating a doppler signal based on a transmission signal used in transmitting the electric wave and a reception signal obtained from the received electric waves, and the determining unit serves to determine whether or not there exists a human body in the detection range through a spectrum analysis using a peak frequency, which is a frequency having the highest intensity in a difference spectrum obtained by subtracting a background spectrum from the spectrum of the doppler signal.Type: GrantFiled: February 13, 2012Date of Patent: December 8, 2015Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.Inventors: Tadashi Murakami, Shigeo Gotou
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Publication number: 20150340919Abstract: A terminal block is fixed to a frame holding a stator and in phase with the stator whereas a part of an outside wire is fixed to a case. Hence, a bus bar extracted from a connection plate is welded to the terminal block hardly under the influence of a tolerance caused by integration of components and a tolerance of assembly. Even when a load applied from the outside gives rise to a phase difference between the case and the frame, a tolerance can be absorbed by the outside wire. Accordingly, a load applied to a weld portion of the terminal block and the bus bar can be reduced.Type: ApplicationFiled: April 19, 2013Publication date: November 26, 2015Applicant: Mitsubishi Electric CorporationInventors: Tadashi MURAKAMI, Kouichi OJIMA, Masaya INOUE