Patents by Inventor Tomohiro Sanpei
Tomohiro Sanpei 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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Publication number: 20110234080Abstract: According to one embodiment, a light-emitting device includes a substrate, a light reflection layer, a plurality of light-emitting elements, and a sealing member. The substrate includes an insulating layer constituted of epoxy resin using an acid anhydride as a hardening agent or one of a polyimide resin, a polyethylene terephthalate resin, and a fluororesin. The light reflection layer is formed on the insulating layer. The light reflection layer includes a metallic light-reflecting surface higher in optical reflectance than the insulating layer. The light-emitting elements are mounted on the light-reflecting surface. The sealing member is constituted of a material having gas permeability and translucency, and is formed on the insulating layer to seal the light reflection layer and the light-emitting elements.Type: ApplicationFiled: March 16, 2011Publication date: September 29, 2011Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Tomohiro SANPEI, Erika Takenaka
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Patent number: 7989840Abstract: An illumination apparatus includes a plurality of semiconductor light-emitting devices, a reflective layer, a plurality of conductor parts and a translucent adhesive layer. Each of the semiconductor light-emitting devices has a translucent substrate, and a semiconductor light-emitting layer formed on the substrate. The reflective layer has a size on which semiconductor light-emitting devices are arranged at intervals. The conductor parts are provided on the reflective layer, and electrically connected to the semiconductor light-emitting devices. The adhesive layer bonds the substrates of the semiconductor light-emitting devices onto the reflective layer, and thereby holds the semiconductor light-emitting devices on the reflective layer.Type: GrantFiled: August 23, 2007Date of Patent: August 2, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Tomohiro Sanpei, Masahiro Izumi, Shinji Nogi, Akiko Saito
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Publication number: 20110182073Abstract: An illumination device includes a base board, an insulator, a conductor, a plurality of semiconductor light-emitting elements and a light-transmissive sealing member. The base board includes a surface and projection portions. The projection portion is formed to become gradually thicker from its end toward the surface of the base board. The insulator is formed on the surface. The conductor is formed on the insulator. The semiconductor light-emitting elements are mounted on the projection portions. The semiconductor light-emitting elements are electrically connected to the conductor via connection members. The sealing member covers the insulator, the projection portions, the semiconductor light-emitting elements and the connection members.Type: ApplicationFiled: April 1, 2011Publication date: July 28, 2011Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Tomohiro SANPEI, Yumiko Hayashida, Masahiro Izumi, Kiyoshi Otani, Yutaka Honda, Shinji Nogi
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Patent number: 7934856Abstract: An illumination device includes a base board, an insulator, a conductor, a plurality of semiconductor light-emitting elements and a light-transmissive sealing member. The base board includes a surface and projection portions. The projection portion is formed to become gradually thicker from its end toward the surface of the base board. The insulator is formed on the surface. The conductor is formed on the insulator. The semiconductor light-emitting elements are mounted on the projection portions. The semiconductor light-emitting elements are electrically connected to the conductor via connection members. The sealing member covers the insulator, the projection portions, the semiconductor light-emitting elements and the connection members.Type: GrantFiled: March 31, 2010Date of Patent: May 3, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Tomohiro Sanpei, Yumiko Hayashida, Masahiro Izumi, Kiyoshi Otani, Yutaka Honda, Shinji Nogi
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Publication number: 20110074269Abstract: A base body having a base body portion and a plurality of heat radiating fins disposed on the circumference of the base body portion is provided. On one end side of the base body, a light-emitting module having semiconductor light-emitting elements, and a globe that covers the light-emitting module are provided. A cap is provided on the other end side of the base boy. A lighting circuit is housed between the base body and the cap. The lamp total length from the globe to the cap is 70 to 120 mm, and the area of a surface of the base body which is exposed to the outside per 1 W of power charged to the light-emitting module is 20.5 to 24.4 cm2/W.Type: ApplicationFiled: September 20, 2010Publication date: March 31, 2011Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: TAKESHI HISAYASU, Kazuto Morikawa, Yusuke Shibahara, Makoto Sakai, Tomohiro Sanpei
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Publication number: 20110068674Abstract: According to one embodiment, a light-emitting device includes a substrate including power-supply conductors, a frame member, and a sealing member. The power-supply conductors are formed on the substrate. A plurality of light-emitting elements including electrodes are mounted on the substrate. The electrodes of the light-emitting elements adjacent to the power-supply conductors are electrically connected to the power-supply conductors by a plurality of bonding wires. The frame member is made of resin which is coated on the substrate so as to surround the light-emitting elements and the bonding wires. The sealing member is filled in an area surrounded by the frame member and seals the light-emitting elements and the bonding wires.Type: ApplicationFiled: September 17, 2010Publication date: March 24, 2011Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Erika TAKENAKA, Tomohiro Sanpei, Takeo Idezuki
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Publication number: 20100327751Abstract: The present invention provides a self-ballasted lamp which efficiently conducts heat of a plurality of LED chips of a light emitting module to its holder, and can prevent the temperature rise of the LED chips. The holder has a base portion, an edge portion provided at one end side of the base portion, which is thick at the base portion side thereof and thin at the distal end side thereof, and heat radiation fins provided at the other end side from the edge part and at the circumference of the base portion. The heat from the semiconductor light emitting elements is conducted from the base portion to the edge part and radiated therefrom. At this time, the edge part is thickened at the base portion side, wherein the thermal capacity is increased, and the heat conduction is improved.Type: ApplicationFiled: June 29, 2010Publication date: December 30, 2010Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Erika Takenaka, Shigeru Osawa, Yusuke Shibahara, Takeshi Hisayasu, Kazuto Morikawa, Tomohiro Sanpei, Mokoto Sakai
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Publication number: 20100301731Abstract: According to one embodiment, a light-emitting module includes a module substrate, a reflective layer, conductive layers, a light-emitting element, and a sealing member. A reflective layer is provided on a surface of an insulating layer of the module substrate, and the conductive layers are provided in the vicinity of the reflective layer. Further, the light-emitting element is provided on the reflective layer. Moreover, the translucent sealing member has translucency and bury the reflective layer, the conductive layers, and the light-emitting element. The ratio of the area occupied by the reflective layer and the conductive layers to the sealed region sealed by the sealing member is equal to or greater than 80%.Type: ApplicationFiled: May 28, 2010Publication date: December 2, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: KAZUTO MORIKAWA, Masahiro Izumi, Kiyoshi Nishimura, Tomohiro Sanpei, Erika Takenaka, Shuhei Matsuda
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Publication number: 20100277083Abstract: According to one embodiment, a lighting device includes a device board, a rectification device connected to a commercial power supply, a series LED circuit, and a transistor (current limiter) which limits a maximum current flowing through the series LED circuit. The series circuit mounted on the device board is configured by connecting in series a plurality of LED elements. Each of the LED elements lights when an output voltage of the rectification device is applied to the series circuit. A number of LED elements included in the series circuit is set in a manner that a voltage applied to the series LED circuit is 70 to 90% of the output voltage of the rectification device.Type: ApplicationFiled: July 13, 2010Publication date: November 4, 2010Inventors: Kiyoshi Nishimura, Hirokazu Otake, Tomohiro Sanpei, Shuhei Matsuda
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Publication number: 20100219735Abstract: A lighting device and a lighting fixture of the embodiment of the present invention comprises a thermally conductive main body having a substrate support portion in one end portion, and having a through-hole and a groove portion formed in the substrate support portion, the through-hole penetrating from the one end portion to the other end portion of the main body, the groove portion extending continuously from the through-hole, a substrate mounted with a semiconductor light-emitting device, and disposed on the substrate support portion, an electrical connector connected to the semiconductor light-emitting device, a power supply device housed in the main body and configured to light the semiconductor light-emitting device, a wire connected to the power supply device and to the electrical connector while being inserted through the through-hole and the groove portion, and a base member provided in the other end portion of the main body and connected to the power supply device.Type: ApplicationFiled: February 26, 2010Publication date: September 2, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Makoto Sakai, Shigeru Osawa, Yusuke Shibahara, Takeshi Hisayasu, Kazuto Morikawa, Tomohiro Sanpei, Erika Takenaka
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Publication number: 20100188852Abstract: An illumination device includes a base board, an insulator, a conductor, a plurality of semiconductor light-emitting elements and a light-transmissive sealing member. The base board includes a surface and projection portions. The projection portion is formed to become gradually thicker from its end toward the surface of the base board. The insulator is formed on the surface. The conductor is formed on the insulator. The semiconductor light-emitting elements are mounted on the projection portions. The semiconductor light-emitting elements are electrically connected to the conductor via connection members. The sealing member covers the insulator, the projection portions, the semiconductor light-emitting elements and the connection members.Type: ApplicationFiled: March 31, 2010Publication date: July 29, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Tomohiro Sanpei, Yumiko Hayashida, Masahiro Izumi, Kiyoshi Otani, Yutaka Honda, Shinji Nogi
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Patent number: 7690817Abstract: An illumination device includes a base board, an insulator, a conductor, a plurality of semiconductor light-emitting elements and a light-transmissive sealing member. The base board includes a surface and projection portions. The projection portion is formed to become gradually thicker from its end toward the surface of the base board. The insulator is formed on the surface. The conductor is formed on the insulator. The semiconductor light-emitting elements are mounted on the projection portions. The semiconductor light-emitting elements are electrically connected to the conductor via connection members. The sealing member covers the insulator, the projection portions, the semiconductor light-emitting elements and the connection members.Type: GrantFiled: November 29, 2007Date of Patent: April 6, 2010Assignee: Toshiba Lighting & Technology CorporationInventors: Tomohiro Sanpei, Yumiko Hayashida, Masahiro Izumi, Kiyoshi Otani, Yutaka Honda, Shinji Nogi
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Publication number: 20080239724Abstract: An illuminating device that is improved in heat radiation property and is suppressed in the occurrence of peeling and warping of a reflector. The reflector having a housing portion that houses a light emitting diode element is disposed on a substrate a visible light converting layer is formed on the housing portion and a lens is disposed on the reflector. A circuit pattern, the light emitting diode element, the reflector, the visible light converting layer, and the lens are disposed on the substrate, and the reflector and the lens are respectively adhered using a same type of adhesive agent. The heat radiation property can thus be improved, the peeling and warping of the reflector, etc., is suppressed, and accordingly, the optical characteristics of the device can be maintained.Type: ApplicationFiled: March 23, 2005Publication date: October 2, 2008Applicant: Toshiba Lighting & Technology CorporationInventors: Takayoshi Moriyama, Akiko Nakanishi, Masami Iwamoto, Shinji Nogi, Kozo Ogawa, Keiichi Shimizu, Akiko Saitou, Seiko Kawashima, Tomohiro Sanpei, Masahiro Toda
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Publication number: 20080191620Abstract: A light emitting device, with which the luminous efficiency is improved and the color non-uniformity of the emitted light is lessened. Specifically, a light emitting diode element is covered with a diffusing layer, with which a diffusing agent is added to a resin. A phosphor layer, with which a phosphor is added to a resin, is disposed on top of the diffusing layer. The light from the light emitting diode element is diffused by the diffusing layer. By exciting the phosphor layer with the light diffused by the diffusing layer and thereby making the phosphor layer emit light, the luminous efficiency is improved and the color non-uniformity is lessened.Type: ApplicationFiled: March 23, 2005Publication date: August 14, 2008Applicant: Toshiba Lighting & Technology Corp.Inventors: Takayoshi Moriyama, Akiko Nakanishi, Masami Iwamoto, Shinji Nogi, Kozo Ogawa, Keiichi Shimizu, Akiko Saitou, Seiko Kawashima, Tomohiro Sanpei, Masahiro Izumi, Masahiro Toda
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Publication number: 20080128739Abstract: An illumination device includes a base board, an insulator, a conductor, a plurality of semiconductor light-emitting elements and a light-transmissive sealing member. The base board includes a surface and projection portions. The projection portion is formed to become gradually thicker from its end toward the surface of the base board. The insulator is formed on the surface. The conductor is formed on the insulator. The semiconductor light-emitting elements are mounted on the projection portions. The semiconductor light-emitting elements are electrically connected to the conductor via connection members. The sealing member covers the insulator, the projection portions, the semiconductor light-emitting elements and the connection members.Type: ApplicationFiled: November 29, 2007Publication date: June 5, 2008Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: TOMOHIRO SANPEI, Yumiko Hayashida, Masahiro Izumi, Kiyoshi Otani, Yutaka Honda, Shinji Nogi
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Publication number: 20080055901Abstract: An illumination apparatus includes a plurality of semiconductor light-emitting devices, a reflective layer, a plurality of conductor parts and a translucent adhesive layer. Each of the semiconductor light-emitting devices has a translucent substrate, and a semiconductor light-emitting layer formed on the substrate. The reflective layer has a size on which semiconductor light-emitting devices are arranged at intervals. The conductor parts are provided on the reflective layer, and electrically connected to the semiconductor light-emitting devices. The adhesive layer bonds the substrates of the semiconductor light-emitting devices onto the reflective layer, and thereby holds the semiconductor light-emitting devices on the reflective layer.Type: ApplicationFiled: August 23, 2007Publication date: March 6, 2008Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Tomohiro Sanpei, Masahiro Izumi, Shinji Nogi, Akiko Saito
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Patent number: 6539202Abstract: An interference canceling device comprising a flat phase IF narrow band BPF. A signal which has been branched from a signal on the main line is filtered by the BPF and is recombined with the signal on the main line. Phase rotation caused by frequency separation from the pass band center frequency does not occur because the phase characteristics of the BPF are substantially flat in the pass band. Thus, interference existing not only in a pin-point frequency, but over a band of frequencies can be cancelled.Type: GrantFiled: November 23, 1999Date of Patent: March 25, 2003Assignee: Japan Radio Co., Ltd.Inventors: Kazuo Yamashita, Hironori Sakamoto, Tomohiro Sanpei, Tamaki Honda, Hiroshi Morita
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Patent number: D603813Type: GrantFiled: November 21, 2008Date of Patent: November 10, 2009Assignee: Toshiba Lighting & Technology CorporationInventors: Kiyoshi Nishimura, Tomohiro Sanpei