Patents by Inventor Kozo Ogawa
Kozo Ogawa 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: 20100208473Abstract: A lamp system which can improve radiation performance is provided. A metallic heat conduction part provided along a peripheral portion of a metallic cover is fitted with a resin heat conduction part provided along a peripheral portion of a transparent cover so as to thermally contact each other. Heat generated by an LED is radiated into air from the metallic cover and at the same time is efficiently conducted from the metallic cover to the transparent cover to be radiated into air from the transparent cover.Type: ApplicationFiled: February 19, 2010Publication date: August 19, 2010Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: MAKOTO SAKAI, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Kozo Ogawa, Takumi Suwa, Hiotshi Kawano
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Publication number: 20100165624Abstract: A light source module includes a module substrate, a metal conductor, a plurality of semiconductor light emitting elements, a white diffuse reflection layer, and translucent sealing members. The metal conductor is provided in a predetermined pattern on a front surface of the module substrate. The semiconductor light emitting elements are electrically connected to the metal conductor and mounted on the front surface of the module substrate. The white diffuse reflection layer includes a plurality of holes in which the semiconductor light emitting elements are located, is thinner than the semiconductor light emitting elements, and is laminated to the front surface of the module substrate. The translucent sealing members bury the semiconductor light emitting elements, project below the diffuse reflection layer, and are mixed with a phosphor.Type: ApplicationFiled: December 18, 2009Publication date: July 1, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Kozo Ogawa, Yusuke Shibahara, Kiyoshi Nishimura, Seiko Kawashima, Tsuyoshi Oyaizu, Haruki Takei
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Publication number: 20100149783Abstract: A light-emitting module includes at least one light-emitting element provided on a mount surface of a substratum. A translucent member is provided so as to face the mount surface of the substratum. The translucent member is separated from the light-emitting element and contains a phosphor material that converts a wavelength of light emitted by the light-emitting element. A frame having heat conducting properties is interposed between the substratum and the translucent member. The frame surrounds the light-emitting element. The frame includes an opening that leads light emitted by the light-emitting element to the translucent member, and a heat conductor thermally connected to the translucent member. The heat conductor includes a heat radiator exposed outside of the translucent member.Type: ApplicationFiled: December 10, 2009Publication date: June 17, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Erika TAKENAKA, Kozo Ogawa, Keiichi Shimizu, Hiroaki Watanabe, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
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Publication number: 20100128480Abstract: A lighting fixture includes a light-emitting section composed of a plurality of semiconductor light-emitting devices arranged separated from one another on a planar substrate and a lighting control section configured to control lighting of the semiconductor light-emitting devices of the light-emitting section. The light-emitting section is attached at a front of a fixture main body, and a convection generation section configured to generate convection is provided at a back of the fixture main body. The convection generation section generates convection and promotes heat radiation. With the configuration, even if the lighting fixture is installed to abut on a ceiling surface, the effect of radiating heat generated by the semiconductor light-emitting devices can be ensured.Type: ApplicationFiled: November 23, 2009Publication date: May 27, 2010Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Hiroaki Watanabe, Erika Takenaka, Kozo Ogawa, Keiichi Shimizu, Tatsuo Maruyama
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Publication number: 20100124064Abstract: A lighting device includes a light source configured to radiate light toward a floor from a ceiling, a reflecting mirror provided around the light source, and shading angle setting element configured to define a range in which the light from the light source is radiated by setting a shading angle with respect to the light radiated from the light source. The light source, the reflecting mirror and the shading angle setting element are covered by a translucent cover. The translucent cover has an in-line transmittance. An in-line transmittance of the translucent cover of a position corresponding to an optical axis of the light source and an in-line transmittance of the translucent cover of a position deviated from the optical axis are different from each other.Type: ApplicationFiled: November 17, 2009Publication date: May 20, 2010Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Kozo Ogawa, Akimichi Takahashi, Erika Takenaka, Hiroaki Watanabe, Keiichi Shimizu, Shinji Nogi, Shinichi Kumashiro
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Publication number: 20100117100Abstract: There is provided a light-emitting module which makes it difficult to sense glare and which suppresses the temperature rise of light-emitting diode chips and has a cost advantage. The light-emitting module is provided with a base body formed with a non-metallic member having a thermal conductivity of 1 W/mk or less. In the base body, a plurality of LED chips are spaced 10 to 30 mm apart from each other, and their junction temperature when they are normally lit is preferably set at 90° C. or less. A translucent sealing member covering an area between the adjacent light-emitting diode chips is provided.Type: ApplicationFiled: November 4, 2009Publication date: May 13, 2010Applicant: Toshiba Lighting & Technology CorporationInventors: Kozo Ogawa, Kiyoshi Nishimura
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Publication number: 20100096965Abstract: A lighting device includes a printed wiring board, a plurality of light-emitting elements, a sealing member, and a color conversion unit, and an adhesive layer. The sealing member has light transmitting properties and seals the light-emitting elements mounted on the printed wiring board. The color conversion unit includes a cover member of light transmitting properties, and a fluorescent substance layer provided on the inner surface of the cover member. The adhesive layer has light-transmitting properties, and adheres the sealing member to the fluorescent substance layer of the color conversion unit in an airtight manner.Type: ApplicationFiled: October 20, 2009Publication date: April 22, 2010Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: TSUYOSHI OYAIZU, KOZO OGAWA, SEIKO KAWASHIMA, AKIKO TAKAHASHI, HARUKI TAKEI, ERIKA TAKENAKA
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Publication number: 20100079087Abstract: The present invention comprises a lighting apparatus main body having a reflecting surface, a main light source arranged in the reflecting surface of the lighting apparatus main body, a sub-light source which is arranged at the lighting apparatus main body and illuminates the neighborhood of the main light source directly, and a control circuit which controls the main light source and the sub-light source. Since the lighting apparatus illuminates downward with a direct illumination of the main light source and an indirect illumination of the sub-light source, the glare of the main light source is reduced.Type: ApplicationFiled: September 30, 2009Publication date: April 1, 2010Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, KABUSHIKI KAISHA TOSHIBAInventors: Hiroaki WATANABE, Keiichi Shimizu, Kozo Ogawa, Erika Takenaka, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
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Publication number: 20090296412Abstract: A spotlight is provided with a substrate having LEDs disposed thereon and a main body casing on which the substrate is provided. The main body casing has a rear side portion having thermal conductivity, which is thermally coupled to the substrate, and is capable of changing the irradiation angle of light emitted from the LEDs. A plurality of heat-radiating fins for forming grooves operating as a plurality of convection paths along the direction of changing the irradiation angle are provided on the rear side portion of the main body casing.Type: ApplicationFiled: May 26, 2009Publication date: December 3, 2009Applicants: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha ToshibaInventors: Kozo Ogawa, Aiko Takahashi, Nobuhiko Betsuda, Hiroki Tamai, Kiyoshi Nishimura, Akiko Saito, Ryotaro Matsuda
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Publication number: 20090290346Abstract: The light source unit is provided with a substrate and a decorative cover having thermal conductivity. The substrate includes a circuit pattern area, in which a plurality of LED chips are disposed, at the middle part thereof, has thermal conductivity, and transmits heat from the circuit pattern area to an area in the outer circumferential direction thereof. The decorative cover encloses the substrate, is electrically insulated from the circuit pattern area, and is thermally coupled to the surface side of the substrate at the periphery of the circuit pattern area by being face-contacted thereto. Heat of the substrate can be radiated by the decorative cover while securing an electric insulation property with respect to the circuit pattern area.Type: ApplicationFiled: May 18, 2009Publication date: November 26, 2009Applicant: Toshiba Lighting & Technology CorporationInventors: Kozo Ogawa, Kiyoshi Nishimura, Nobuhiko Betsuda, Hiroki Tamai, Akiko Saito
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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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Patent number: 7163325Abstract: A road indication device is provided. The road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp. The light projection unit project a light whose peak luminosity is 30000 cd or more, i.e., the light has a luminosity equal to or larger than a peak luminosity of a headlight of a car running on the road. Since a light pillar of light having a high light output and a thick light pillar is projected from the light projection unit, the visuality of the light pillar is improved even in the bad weather and the boundary between the driveway and the shoulder on the road can be affirmatively guided and indicated.Type: GrantFiled: May 17, 2004Date of Patent: January 16, 2007Assignee: Toshiba Lighting & Technology CorporationInventors: Hiroyuki Kojima, Tomoko Ishiwata, Takashi Ichijo, Kozo Ogawa, Yasuharu Takano
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Publication number: 20050002203Abstract: A road indication device is provided. The road-guidance indicating device has a light projection unit including light control means for controlling a lamp and light emitted from the lamp. The light projection unit project a light whose peak luminosity is 30000 cd or more, i.e., the light has a luminosity equal to or larger than a peak luminosity of a headlight of a car running on the road. Since a light pillar of light having a high light output and a thick light pillar is projected from the light projection unit, the visuality of the light pillar is improved even in the bad weather and the boundary between the driveway and the shoulder on the road can be affirmatively guided and indicated.Type: ApplicationFiled: May 17, 2004Publication date: January 6, 2005Inventors: Hiroyuki Kojima, Tomoko Ishiwata, Takashi Ichijo, Kozo Ogawa, Yasuharu Takano
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Patent number: D563595Type: GrantFiled: April 13, 2005Date of Patent: March 4, 2008Assignee: Toshiba Lighting & Technology CorporationInventors: Kazuo Egawa, Takayoshi Moriyama, Masami Iwamoto, Kozo Ogawa
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Patent number: D624887Type: GrantFiled: April 2, 2010Date of Patent: October 5, 2010Assignee: Toshiba Lighting & Technology CorporationInventors: Akimichi Takahashi, Kazuto Morikawa, Yusuke Shibahara, Kozo Ogawa
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Patent number: D624888Type: GrantFiled: April 2, 2010Date of Patent: October 5, 2010Assignee: Toshiba Lighting & Technology CorporationInventors: Akimichi Takahashi, Kazuto Morikawa, Yusuke Shibahara, Kozo Ogawa
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Patent number: D624889Type: GrantFiled: April 2, 2010Date of Patent: October 5, 2010Assignee: Toshiba Lighting & Technology CorporationInventors: Akimichi Takahashi, Kazuto Morikawa, Yusuke Shibahara, Kozo Ogawa