Patents by Inventor Takumi Kijima
Takumi Kijima 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: 10281634Abstract: A light source apparatus includes a plurality of light source modules each including at least one light source unit, light guide lines connected respectively to the light source units, and a casing accommodating the plurality of light source modules and the plurality of light guide lines. The light guide lines are led from the light source units so as not to intervene in the plurality of light source modules when viewed in a direction perpendicular to an array direction of the plurality of light source modules. The plurality of light source modules are separately attachable and detachable in the direction perpendicular to the array direction of the plurality of light source modules.Type: GrantFiled: May 6, 2013Date of Patent: May 7, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Mitoru Yabe, Yukio Sato, Takumi Kijima, Motoaki Tamaya
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Patent number: 10109977Abstract: An optical unit is retained by a hole provided at a base member. The optical unit includes a laser light emitting element and a lens. The base member is provided with a guide part that is used for determining the position of the laser light emitting element in the hole of the base member.Type: GrantFiled: December 9, 2015Date of Patent: October 23, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Takumi Kijima
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Patent number: 10082673Abstract: It is an object to provide a small and inexpensive laser light source device capable of efficiently focusing rays of laser light from a plurality of laser light sources so as to increase output, and to provide an inexpensive and small video display device. The plurality of laser light source units are arranged in such manner that the plurality of laser light source units adjacent to each other adjoin each other in series. The laser light source device further includes a second reflection mirror reflecting, in a third direction, a ray of laser light reflected in a second direction. The second reflection mirror is held by a mirror holder belonging to one laser light source unit among the plurality of laser light source units.Type: GrantFiled: January 19, 2016Date of Patent: September 25, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Takumi Kijima
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Publication number: 20180166851Abstract: An optical unit is retained by a hole provided at a base member. The optical unit includes a laser light emitting element and a lens. The base member is provided with a guide part that is used for determining the position of the laser light emitting element in the hole of the base member.Type: ApplicationFiled: December 9, 2015Publication date: June 14, 2018Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Takumi KIJIMA
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Publication number: 20170285354Abstract: It is an object to provide a small and inexpensive laser light source device capable of efficiently focusing rays of laser light from a plurality of laser light sources so as to increase output, and to provide an inexpensive and small video display device. The plurality of laser light source units are arranged in such manner that the plurality of laser light source units adjacent to each other adjoin each other in series. The laser light source device further includes a second reflection mirror reflecting, in a third direction, a ray of laser light reflected in a second direction. The second reflection mirror is held by a mirror holder belonging to one laser light source unit among the plurality of laser light source units.Type: ApplicationFiled: January 19, 2016Publication date: October 5, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventor: Takumi KIJIMA
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Patent number: 9297526Abstract: A light source apparatus includes a cooling mechanism driving portion for driving a cooling mechanism in such a manner that an element temperature of a light source element which is detected by an element temperature detecting portion reaches a target temperature, and a control portion for calculating a dew point temperature of the cooling mechanism and controlling the cooling mechanism driving portion and a light source element driving portion by using the calculated dew point temperature and the element temperature.Type: GrantFiled: May 21, 2013Date of Patent: March 29, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Koji Kumano, Makoto Kuriaki, Takumi Kijima, Yasuhito Tanaka
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Publication number: 20150219345Abstract: A dehumidification configuration includes a dehumidification area as an area for removing moisture contained in air, and a reproduction area as an area for separating the moisture having been removed in the dehumidification area, inside a casing. The dehumidification configuration further includes, inside the casing, a non-dehumidification area as an area in which there is placed a main part of a cooling unit for cooling a heat generating member which is a to-be-cooled part placed in the dehumidification area. The dehumidification area has a configuration sealed from the reproduction area and the non-dehumidification area.Type: ApplicationFiled: December 24, 2014Publication date: August 6, 2015Inventor: Takumi KIJIMA
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Patent number: 8967828Abstract: A light source apparatus includes an outer casing. A light source member and a light source module having a cooling body which cools the light source member are disposed in the outer casing. A wind tunnel which surrounds a heat pipe unit as the cooling body of the light source module is provided in the outer casing. The wind tunnel includes a wind passage which allows cooling wind to pass through the heat pipe unit. An intake-opening is formed in a surface of the outer casing, and cooling wind is taken into the outer casing from outside thereof through the intake-opening. One end of the wind passage of the wind tunnel is connected to the intake-opening.Type: GrantFiled: December 3, 2012Date of Patent: March 3, 2015Assignee: Mitsubishi Electric CorporationInventors: Takumi Kijima, Koji Kumano, Yukio Sato, Mitoru Yabe
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Publication number: 20130335993Abstract: A light source apparatus includes a plurality of light source modules each including at least one light source unit, light guide lines connected respectively to the light source units, and a casing accommodating the plurality of light source modules and the plurality of light guide lines. The light guide lines are led from the light source units so as not to intervene in the plurality of light source modules when viewed in a direction perpendicular to an array direction of the plurality of light source modules. The plurality of light source modules are separately attachable and detachable in the direction perpendicular to the array direction of the plurality of light source modules.Type: ApplicationFiled: May 6, 2013Publication date: December 19, 2013Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Mitoru YABE, Yukio SATO, Takumi KIJIMA, Motoaki TAMAYA
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Publication number: 20130334966Abstract: A light source apparatus includes a cooling mechanism driving portion for driving a cooling mechanism in such a manner that an element temperature of a light source element which is detected by an element temperature detecting portion reaches a target temperature, and a control portion for calculating a dew point temperature of the cooling mechanism and controlling the cooling mechanism driving portion and a light source element driving portion by using the calculated dew point temperature and the element temperature.Type: ApplicationFiled: May 21, 2013Publication date: December 19, 2013Applicant: Mitsubishi Electric CorporationInventors: Koji KUMANO, Makoto KURIAKI, Takumi KIJIMA, Yasuhito TANAKA
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Publication number: 20130176730Abstract: A light source apparatus includes an outer casing. A light source member and a light source module having a cooling body which cools the light source member are disposed in the outer casing. A wind tunnel which surrounds a heat pipe unit as the cooling body of the light source module is provided in the outer casing. The wind tunnel includes a wind passage which allows cooling wind to pass through the heat pipe unit. An intake-opening is formed in a surface of the outer casing, and cooling wind is taken into the outer casing from outside thereof through the intake-opening. One end of the wind passage of the wind tunnel is connected to the intake-opening.Type: ApplicationFiled: December 3, 2012Publication date: July 11, 2013Inventors: Takumi KIJIMA, Koji KUMANO, Yukio SATO, Mitoru YABE
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Patent number: 8098429Abstract: A projection-type image display apparatus includes a screen on which an image is projected; and a frame that holds a periphery of the screen. The frame includes a plurality of frame units that respectively extend along a plurality of sides of the screen and holds a rim of the screen, and a coupling member that couples the frame units that abut at a corner portion. Each end of the coupling member is fitted into an enclosed section formed at a rear portion of each of the frame units at a position hidden behind the screen.Type: GrantFiled: July 21, 2009Date of Patent: January 17, 2012Assignee: Mitsubishi Electric CorporationInventors: Takumi Kijima, Tomomi Matsui, Takashi Kojima, Kohei Eto
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Patent number: 8089692Abstract: A projection type image display apparatus includes an optical engine that emits a light according to image signal, a Fresnel lens on which the light emitted by the optical engine is incident and emitting the light as a parallel light, and a diffusion member that diffuses the parallel light emitted by the Fresnel lens. The projection type image display apparatus further includes a driving unit that moves the Fresnel lens or the diffusion member in a plane parallel to an emitting surface of the Fresnel lens or the diffusion member, a frame the supports the Fresnel lens, the diffusion member and the driving unit, a resilient supporting body that supports a weight of the Fresnel lens or the diffusion member with respect to the frame, and a holding unit that holds the Fresnel lens or the diffusion member so as to be movable in the plane parallel to the emitting surface of the Fresnel lens or the diffusion member.Type: GrantFiled: July 21, 2009Date of Patent: January 3, 2012Assignee: Mitsubishi Electric CorporationInventors: Norihiro Watanabe, Atsushi Michimori, Kazuo Kadowaki, Takumi Kijima
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Publication number: 20110179806Abstract: Disclosed is a cooling apparatus including: a heat receiving plate to which a plurality of heating elements are attached; a radiator plate to which a plurality of Peltier devices are attached; a thermal transport heat pipe that couples the heat receiving plate with the radiator plate; and a heat dissipating device being provided on an exothermic side of the Peltier devices; wherein the plurality of heating elements are arranged along a longitudinal direction of the thermal transport heat pipe, and the plurality of Peltier devices are arranged along the longitudinal direction of the thermal transport heat pipe, whereby, when using a plurality of Peltier devices, reducing power consumption thereof by equalizing each operation of the respective Peltier devices.Type: ApplicationFiled: October 22, 2010Publication date: July 28, 2011Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Shigetoshi Ipposhi, Tatsuro Hirose, Kazuo Kadowaki, Takumi Kijima, Takayuki Nakao
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Publication number: 20100027112Abstract: A projection-type image display apparatus includes a screen on which an image is projected; and a frame that holds a periphery of the screen. The frame includes a plurality of frame units that respectively extend along a plurality of sides of the screen and holds a rim of the screen, and a coupling member that couples the frame units that abut at a corner portion. Each end of the coupling member is fitted into an enclosed section formed at a rear portion of each of the frame units at a position hidden behind the screen.Type: ApplicationFiled: July 21, 2009Publication date: February 4, 2010Inventors: Takumi Kijima, Tomomi Matsui, Takashi Kojima, Kohei Eto
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Publication number: 20100026968Abstract: A projection-type image display apparatus that projects an image on a screen, includes a screen frame that holds the screen; an optical engine base that is coupled to a lower edge of the screen frame; an upper cross brace that extends obliquely backwards from an upper edge of the screen frame; a lower cross brace that extends obliquely backwards from a vertical frame of the screen frame; and a coupling member that couples the upper cross brace with the lower cross brace.Type: ApplicationFiled: July 24, 2009Publication date: February 4, 2010Inventors: Takumi KIJIMA, Kazuo Kadowaki, Takashi Kojima, Kohei Eto
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Publication number: 20100020395Abstract: A projection type image display apparatus includes an optical engine that emits a light according to image signal, a Fresnel lens on which the light emitted by the optical engine is incident and emitting the light as a parallel light, and a diffusion member that diffuses the parallel light emitted by the Fresnel lens. The projection type image display apparatus further includes a driving unit that moves the Fresnel lens or the diffusion member in a plane parallel to an emitting surface of the Fresnel lens or the diffusion member, a frame the supports the Fresnel lens, the diffusion member and the driving unit, a resilient supporting body that supports a weight of the Fresnel lens or the diffusion member with respect to the frame, and a holding unit that holds the Fresnel lens or the diffusion member so as to be movable in the plane parallel to the emitting surface of the Fresnel lens or the diffusion member.Type: ApplicationFiled: July 21, 2009Publication date: January 28, 2010Applicant: Mitsubishi Electric CorporationInventors: Norihiro WATANABE, Atsushi Michimori, Kazuo Kadowaki, Takumi Kijima