Patents by Inventor Keiichi Shimizu
Keiichi Shimizu 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: 20120319581Abstract: A lighting device may include a substrate attached to one edge side of a radiator and a cover may be attached to cover the substrate. Heat-radiating fins may be provided on the other edge side of the radiator and an air-cooling unit may be rotatably provided inside the heat-radiating fins, thereby enabling freely rotation. In one or more examples, a case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the air flow from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.Type: ApplicationFiled: August 27, 2012Publication date: December 20, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Nobuhiko Betsuda, Takumi Suwa, Hitoshi Kawano, Akiko Saito, Makoto Bessho, Yusuke Shibahara, Hiroki Tamai, Nobuo Shibano, Keiichi Shimizu
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Publication number: 20120320593Abstract: A lighting device may include a substrate attached to one edge side of a radiator and a cover may be attached to cover the substrate. Heat-radiating fins may be provided on the other edge side of the radiator and an air-cooling unit may be rotatably provided inside the heat-radiating fins, thereby enabling freely rotation. In one or more examples, a case storing a circuit part is attached to the other edge side of the radiator and a cap is provided to the case. By the air flow from the air-cooling unit, the heat-radiating fins are caused to be a part of the ventilation path to allow for ventilation of the inside of the radiator.Type: ApplicationFiled: August 27, 2012Publication date: December 20, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Nobuhiko Betsuda, Takumi Suwa, Hitoshi Kawano, Akiko Saito, Makoto Bessho, Yusuke Shibahara, Hiroki Tamai, Nobuo Shibano, Keiichi Shimizu
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Publication number: 20120320610Abstract: A lighting fixture capable of efficiently radiating heat of a lamp device may be configured to be attached to a socket device. In some examples, by attaching the lamp device to the socket device, a cap portion of the lamp device is brought into contact with a fixture body, and pressed against and brought into close contact with the fixture body by an elastic body. Heat generated by lighting of LEDs of the lamp device is conducted from the cap portion to the fixture body and efficiently radiated.Type: ApplicationFiled: August 29, 2012Publication date: December 20, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Satoshi Watanabe, Keiichi Shimizu, Takeshi Osada, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Hirokazu Otake, Hitoshi Kawano, Makoto Sakai
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Publication number: 20120262928Abstract: According to one embodiment, a lamp apparatus includes a light-emitting module, housing, and a lighting circuit. The light-emitting module includes a light-emitting element. The housing opens in the direction of irradiation of a light beam and having a cap on a side opposite from the direction of irradiation of the light beam. The cap is provided with a light-emitting module mounting portion projecting in the direction of irradiation of the light beam and the light-emitting module is mounted on the light-emitting module mounting portion. The lighting circuit is accommodated in the housing.Type: ApplicationFiled: January 30, 2012Publication date: October 18, 2012Applicant: Toshiba Lighting & Technology CorporationInventors: Ryotaro Matsuda, Jun Sasaki, Shigeru Osawa, Yuichiro Takahara, Hiromichi Nakajima, Kenji Takanashi, Keiichi Shimizu, Masahiro Izumi, Hiroshi Matsushita, Masahiro Toda, Junichi Kimiya, Hiroshi Takenaga, Takeshi Osada
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Publication number: 20120243227Abstract: According to one embodiment, a light-emitting module includes a substrate and a light-emitting element mounted on the substrate. One side of the light-emitting module has a length of 160 mm to 200 mm. An optical output per area for a square section of the light-emitting module having a side length equal to the length of the one side is 700 lm to 1300 lm, and a rated power consumption of the square section is equal to or less than 16 W. A plurality of such light-emitting modules are arranged and combined to form various luminaires having shapes and lighting performances equivalent to a shape and lighting performance of a luminaire including a fluorescent lamp as a light source.Type: ApplicationFiled: March 14, 2012Publication date: September 27, 2012Applicant: Toshiba Lighting & Technology CorporationInventors: Keiichi SHIMIZU, Hiroaki Watanabe, Takafumi Oishi, Kenji Sugiyama
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Publication number: 20120194097Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.Type: ApplicationFiled: April 12, 2012Publication date: August 2, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120161194Abstract: A light-emitting device includes a substrate having a front surface on which a semiconductor light-emitting element is mounted. A front cover is provided which thermally contacts the front surface of the substrate at a periphery of the semiconductor light-emitting element and is disposed on a front side of the substrate. A heat conduction path is formed along which heat generated by the semiconductor light-emitting element is conducted in order of the substrate and the front cover and the heat is radiated from a front surface of the front cover, so that a heat radiation property from a front surface of the light-emitting device is improved.Type: ApplicationFiled: August 25, 2010Publication date: June 28, 2012Inventors: Ryotaro Matsuda, Kozo Ogawa, Makoto Sakai, Akiko Takahashi, Keiichi Shimizu, Kiyoshi Nishimura
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Patent number: 8197086Abstract: 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: GrantFiled: November 23, 2009Date of Patent: June 12, 2012Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha ToshibaInventors: Hiroaki Watanabe, Erika Takenaka, Kozo Ogawa, Keiichi Shimizu, Tatsuo Maruyama
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Publication number: 20120134153Abstract: A light source unit includes a light-emitting element 52 such as a LED provided on an inner surface of a side wall 4, and a reflecting surface 31 opposed to the light-emitting element 52 with the side wall 4 made parallel to a direction of radiation of the reflecting surface 31, the reflecting surface 31 formed of a part of a curved surface formed by a paraboloid of revolution or the like that is obtained by revolving a parabola and is spread and opened in the direction of radiation.Type: ApplicationFiled: February 6, 2012Publication date: May 31, 2012Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIGHTING & TECHOLOGY CORPORATIONInventors: NORIMASA SUZUKI, Keiichi Shimizu, Masaru Matsuno, Yoshiro Oka
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Patent number: 8188680Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.Type: GrantFiled: March 1, 2011Date of Patent: May 29, 2012Assignee: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120007521Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.Type: ApplicationFiled: September 16, 2011Publication date: January 12, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120007517Abstract: To a constant-current power supply whose output current can be variably set, light emitting modules can be connected in parallel. A control unit recognizes connection information outputted from an information output unit provided in each of the light emitting modules and varies the output current of the constant-current power supply. Drive can be controlled in response to a state of the connected light emitting modules such as the connecting number of light emitting modules.Type: ApplicationFiled: September 16, 2011Publication date: January 12, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120002425Abstract: According to one embodiment, a light-emitting module includes a substrate, a light-emitting element, a light distribution control member, and a cover. The substrate includes a surface on which a thermally conductive portion and a interconnect pattern are formed. The light-emitting element is thermally connected to the thermally conductive portion, is electrically connected to the interconnect pattern, and generates heat while emitting light. The light distribution control member is thermally connected to the thermally conductive portion at a periphery of the light-emitting element, includes a ridge portion formed on an exit side where light emitted from the light-emitting element is projected, and is configured to control distribution of the light emitted from the light-emitting element. The cover is thermally connected to the ridge portion and configured to pass therethrough the light emitted from the light-emitting element.Type: ApplicationFiled: September 15, 2011Publication date: January 5, 2012Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Keiichi Shimizu, Hiroaki Watanabe, Naoki Sugishita, Homare Takai
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Publication number: 20120002429Abstract: There is provided a lighting fixture capable of efficiently radiating heat of a lamp device attached to a socket device. By attaching the lamp device to the socket device, a cap portion of the lamp device is brought into contact with. a fixture body, and pressed against and brought into close contact with the fixture body by an elastic body. Heat generated by lighting of LEDs of the lamp device is conducted from the cap portion to the fixture body and efficiently radiated.Type: ApplicationFiled: September 15, 2011Publication date: January 5, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Satoshi Watanabe, Keiichi Shimizu, Takeshi Osada, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Hirokazu Otake, Hitoshi Kawano, Makoto Sakai
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Patent number: 8079736Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.Type: GrantFiled: April 9, 2010Date of Patent: December 20, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
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Publication number: 20110291594Abstract: In a lamp device 12 using a GX53-type cap 31 and also using an LED 56 as a light source, there is regulated an appropriate configuration of a metallic cover 32. A cap 31 and a lighting device 36 are arranged on an upper surface side of the metallic cover 32, and a substrate 33 on which the LED 56 is mounted is arranged on a lower surface side thereof. The metallic cover 32 has an approximately cylindrical shape with a maximum outer diameter D of 80 to 150 mm, a height H of 5 to 25 mm, and 2? (D/2) H/W, that is, an area of the outer peripheral surface per gross input power W to the lamp device 12 being in a range of 200 to 800 mm2/W. The gross input power W is 5 to 20 W.Type: ApplicationFiled: February 19, 2010Publication date: December 1, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Toshiya Tanaka, Keiichi Shimizu, Takumi Suwa, Makoto Sakai, Kozo Ogawa, Sigeru Osawa, Takeshi Hisayasu, Hitoshi Kawano
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Patent number: 8057072Abstract: 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: GrantFiled: December 10, 2009Date of Patent: November 15, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Erika Takenaka, Kozo Ogawa, Keiichi Shimizu, Hiroaki Watanabe, Akimichi Takahashi, Shinji Nogi, Shinichi Kumashiro
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Patent number: 8047687Abstract: A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector.Type: GrantFiled: April 9, 2010Date of Patent: November 1, 2011Assignee: Toshiba Lighting & technology CorporationInventors: Masaru Inoue, Keiichi Shimizu, Sumio Hashimoto, Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Masatoshi Kumagai
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Publication number: 20110261572Abstract: There is provided a lighting fixture 11 capable of efficiently radiating heat of a lamp device 14 attached to a socket device 13. By attaching the lamp device 14 to the socket device 13, a cap portion 38 of the lamp device 14 is brought into contact with a fixture body 12, and pressed against and brought into close contact with the fixture body 12 by an elastic body 30. Heat generated by lighting of LEDs 35 of the lamp device 14 is conducted from the cap portion 38 to the fixture body 12 and efficiently radiated.Type: ApplicationFiled: November 16, 2009Publication date: October 27, 2011Inventors: Satoshi Watanabe, Keiichi Shimizu, Takeshi Osada, Keiichi Shimizu, Toshiya Tanaka, Shigeru Osawa, Takeshi Hisayasu, Hirokazu Otake, Hitoshi Kawano, Makoto Sakai
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Patent number: D656262Type: GrantFiled: January 11, 2010Date of Patent: March 20, 2012Assignee: Toshiba Lighting & Technology CorporationInventors: Masayuki Yoshinobu, Keiichi Shimizu, Sumio Hashimoto, Masaru Inoue