Patents by Inventor Shohei TAKADA
Shohei TAKADA 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: 10317605Abstract: A planar illumination apparatus according to an embodiment includes a light guide plate configured to emit, from an exit surface, light incident from a side surface, a frame including a border that encloses the light guide plate, and a plate spring provided between the light guide plate and the border and configured to press the light guide plate in a first direction and in a second direction different from the first direction.Type: GrantFiled: May 19, 2017Date of Patent: June 11, 2019Assignee: MINEBEA MITSUMI INC.Inventors: Shohei Takada, Takashi Ishii
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Patent number: 10078176Abstract: A planar illumination device includes: a frame including a side wall; a circuit board including a mounted portion arranged on the side wall, and a folded portion folded with respect to the mounted portion; a plurality of point light sources arranged on the mounted portion; a light guiding plate that includes an incoming surface facing the plurality of point light sources and that is accommodated in the frame; and a fixing nail that is formed in the light guiding plate, protrudes from the incoming surface towards a part of the mounted portion where the plurality of point light sources are not arranged and arranges the mounted portion on the side wall.Type: GrantFiled: February 3, 2016Date of Patent: September 18, 2018Assignee: MINEBEA CO., LTD.Inventors: Shohei Takada, Keito Azumi
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Publication number: 20170343721Abstract: A planar illumination apparatus according to an embodiment includes a light guide plate configured to emit, from an exit surface, light incident from a side surface, a frame including a border that encloses the light guide plate, and a plate spring provided between the light guide plate and the border and configured to press the light guide plate in a first direction and in a second direction different from the first direction.Type: ApplicationFiled: May 19, 2017Publication date: November 30, 2017Applicant: MINEBEA MITSUMI INC.Inventors: Shohei TAKADA, Takashi ISHII
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Publication number: 20170293071Abstract: A planar lighting device according to an embodiment includes: a light guide that has flexibility and receives light from a side surface and emits the light from a light-emitting surface; a light source disposed close to the side surface and emits light that enters the side surface; a first frame having a curved shape and having an aperture; a second frame having a curved surface for sandwiching the light guide between the first frame and the curved surface such that the light-emitting surface faces the aperture; and an optical sheet disposed close to the light-emitting surface with at least a part of an edge portion of the optical sheet being disposed in a space defined by the first frame and the light guide, the part being separated from the first frame.Type: ApplicationFiled: March 24, 2017Publication date: October 12, 2017Applicant: MINEBEA MITSUMI INC.Inventors: Shohei TAKADA, Hideyuki TOKUNAGA
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Publication number: 20160231499Abstract: A planar illumination device includes: a frame including a side wall; a circuit board including a mounted portion arranged on the side wall, and a folded portion folded with respect to the mounted portion; a plurality of point light sources arranged on the mounted portion; a light guiding plate that includes an incoming surface facing the plurality of point light sources and that is accommodated in the frame; and a fixing nail that is formed in the light guiding plate, protrudes from the incoming surface towards a part of the mounted portion where the plurality of point light sources are not arranged and arranges the mounted portion on the side wall.Type: ApplicationFiled: February 3, 2016Publication date: August 11, 2016Applicant: MINEBEA CO., LTD.Inventors: Shohei TAKADA, Keito AZUMI
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Patent number: 9158056Abstract: A spread illuminating apparatus includes a plurality of point light sources; a printed circuit board on which the plurality of point light sources is each mounted; and a light guide plate with a light input surface facing the point light source and a light output portion that exits plane light emitted from the point light source and introduced through the light input surface, wherein the light guide plate includes an inclination portion between the light input surface and the light output portion, the inclination portion having a thickness gradually decreasing toward the light output portion side, an inclined surface of the inclination portion includes a pedestal for disposing the printed circuit board in an area except the front of the point light source, and a light-blocking member is disposed between the neighboring pedestals.Type: GrantFiled: July 18, 2013Date of Patent: October 13, 2015Assignee: MINEBEA CO., LTD.Inventors: Shohei Takada, Tomotaka Horikawa
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Patent number: 8894264Abstract: A spread illuminating apparatus includes: a light guide plate with an emitting surface, a plurality of optical sheets laminated on the emitting surface, a light-blocking member that defines an effective area of the emitting surface, a light source, and a frame for accommodating the above constituents. The plurality of optical sheets are formed such that a position of an edge of each optical sheet on the incident light surface side of the light guide plate is spaced farther apart from the incident light surface of the light guide plate as moving toward a top layer of the optical sheets counted from the emitting surface, and the light-blocking member is fixed to each optical sheet and extends from the incident light surface side of the light guide plate so as to cover a vicinity of the edges of the plurality of optical sheets.Type: GrantFiled: February 19, 2013Date of Patent: November 25, 2014Assignee: Minebea Co., Ltd.Inventors: Shohei Takada, Tomotaka Horikawa
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Patent number: 8801262Abstract: A spread illuminating apparatus includes: a light guide plate having protrusions on side surfaces of the light guide plate, a housing frame having recesses in which the protrusions of the light guide plate are introduced, a reflecting sheet arranged on a bottom surface side opposing an emitting surface of the light guide plate, and a fixation device for fixing the reflecting sheet to a bottom surface of the housing frame. The recesses of the housing frame include a first recess which is formed to be opened at a bottom surface side and is at least partially covered by the fixation device, and each of the protrusions to be arranged at the first recess has an opposing surface that opposes the fixation device, and the opposing surface is provided with clearance relative to the fixation device.Type: GrantFiled: June 12, 2013Date of Patent: August 12, 2014Assignee: Minebea Co., Ltd.Inventors: Shohei Takada, Tomotaka Horikawa
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Publication number: 20140036541Abstract: A spread illuminating apparatus includes a plurality of point light sources; a printed circuit board on which the plurality of point light sources is each mounted; and a light guide plate with a light input surface facing the point light source and a light output portion that exits plane light emitted from the point light source and introduced through the light input surface, wherein the light guide plate includes an inclination portion between the light input surface and the light output portion, the inclination portion having a thickness gradually decreasing toward the light output portion side, an inclined surface of the inclination portion includes a pedestal for disposing the printed circuit board in an area except the front of the point light source, and a light-blocking member is disposed between the neighboring pedestals.Type: ApplicationFiled: July 18, 2013Publication date: February 6, 2014Inventors: Shohei TAKADA, Tomotaka HORIKAWA
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Publication number: 20140003092Abstract: A spread illuminating apparatus includes: a light guide plate having protrusions on side surfaces of the light guide plate, a housing frame having recesses in which the protrusions of the light guide plate are introduced, a reflecting sheet arranged on a bottom surface side opposing an emitting surface of the light guide plate, and a fixation device for fixing the reflecting sheet to a bottom surface of the housing frame. The recesses of the housing frame include a first recess which is formed to be opened at a bottom surface side and is at least partially covered by the fixation device, and each of the protrusions to be arranged at the first recess has an opposing surface that opposes the fixation device, and the opposing surface is provided with clearance relative to the fixation device.Type: ApplicationFiled: June 12, 2013Publication date: January 2, 2014Inventors: Shohei TAKADA, Tomotaka HORIKAWA