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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Patent number: 8523402Abstract: 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: GrantFiled: August 29, 2012Date of Patent: September 3, 2013Assignee: 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: 20130201697Abstract: Provided are a cap, a socket device, and a luminaire which reduce the influence of noise. A lamp with the cap includes a lamp main body having engaging means mounted so as to be attachable to and detachable from a socket device; a light emitting-portion; a control device that controls the light-emitting portion; a cap member for a power source situated adjacent to one side with the engaging means interposed therebetween is disposed in a circular track of the lamp main body and connected to the control device; a cap member for signaling situated adjacent to the other side with the engaging means interposed therebetween is disposed in the circular track of the lamp main body and connected to the control device; and a thermal conductor that comes into contact with a thermal radiator when mounted on the socket device.Type: ApplicationFiled: July 5, 2011Publication date: August 8, 2013Applicant: Toshiba Lighting & Technology CorporationInventors: Takeshi Osada, Satoshi Watanabe, Keiichi Shimizu, Shigeru Osawa, Kenji Nezu
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Patent number: 8476840Abstract: An LED lighting device includes light emitting diode, a current control circuit having a first series circuit of first and second switching elements, a second series circuit of third and fourth switching elements, and a condenser, which is configured so that the first and second series circuits are parallel connected and the condenser is connected between a connection point of the first and second switching elements and a connection point of the third and fourth switching elements, and a control circuit for alternatively on-off controlling a pair of the first and fourth switching elements and a pair of the second and third switching elements.Type: GrantFiled: August 26, 2009Date of Patent: July 2, 2013Inventors: Noriyuki Kitamura, Keiichi Shimizu, Hiroshi Terasaka, Tomokazu Usami
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Patent number: 8450943Abstract: 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: April 12, 2012Date of Patent: May 28, 2013Assignee: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20130119896Abstract: A straight tube LED lamp includes: a straight tube in which a plurality of light emitting diodes is housed; a first cap for forming a power feeding connection to the plurality of light emitting diodes, provided on one axial direction end side of the straight tube; and a second cap for grounding, provided on another axial direction end side of the straight tube. A first terminal for forming an electrical connection to a power feeding terminal of a first lamp socket is provided in the first cap. A second terminal for forming an electrical connection to a grounding terminal of a second lamp socket is provided in the second cap.Type: ApplicationFiled: June 10, 2011Publication date: May 16, 2013Applicants: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION, PANASONIC CORPORATIONInventors: Satoshi Fukano, Nobumichi Nishihama, Tadashi Yamanaka, Fumihiko Masuko, Takeshi Saito, Hiroki Nakagawa, Masanao Hieda, Kenichi Ito, Naoki Sugishita, Keisuke Ono, Keiichi Shimizu, Shinichi Kumashiro, Takeshi Osada
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Patent number: 8439521Abstract: 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: GrantFiled: September 15, 2011Date of Patent: May 14, 2013Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha ToshibaInventors: Keiichi Shimizu, Hiroaki Watanabe, Naoki Sugishita, Homare Takai
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Patent number: 8441208Abstract: 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: September 16, 2011Date of Patent: May 14, 2013Assignee: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Patent number: 8434908Abstract: 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: GrantFiled: August 29, 2012Date of Patent: May 7, 2013Assignee: 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: 8430535Abstract: 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: GrantFiled: September 15, 2011Date of Patent: April 30, 2013Assignee: 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: 8427059Abstract: A substrate is attached to one edge side of a radiator and a globe is attached covering the substrate. Heat-radiating fins are provided on the other edge side of the radiator and an air-cooling unit is rotatably provided inside the heat-radiating fins which enables to freely rotate. 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 wind blast 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: GrantFiled: July 29, 2009Date of Patent: April 23, 2013Assignee: 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: 20130083511Abstract: A luminaire capable of contacting a lamp device to a luminaire main body is provided.Type: ApplicationFiled: June 21, 2011Publication date: April 4, 2013Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Takeshi Osada, Satoshi Watanabe, Keiichi Shimizu, Shigeru Osawa
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Patent number: 8388189Abstract: 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: GrantFiled: August 29, 2012Date of Patent: March 5, 2013Assignee: 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: 20130027924Abstract: Both ends of a lamp body are mounted on sockets of an apparatus body and a feeding unit configured to feed power to LEDs is provided on the back side facing the apparatus body of the lamp body.Type: ApplicationFiled: March 28, 2011Publication date: January 31, 2013Inventors: Keiichi Shimizu, Masao Hori, Koji Sato, Yuki Harada, Toshiyuki Hiraoka, Kenji Sugiyama, Masanao Hieda, Naoki Sugishita, Satoshi Watanabe, Masahiko Kamata, Katsusuke Uchino
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Patent number: 8354804Abstract: In a power supply device according to one embodiment, a reference signal (Vref1), which changes from a value corresponding to a maximum current in a full lighting state to that corresponding to a minimum current in case of a deepest dimming depth, and a reference signal (Vref2), which changes from a value corresponding to a load voltage at the time of a maximum current in a full lighting state to that corresponding to a minimum current in case of the deepest dimming depth, are prepared in accordance with dimming depths of a dimming signal. In a shallow dimming depth region close to a full lighting state, the reference signal (Vref1) is selected to apply constant-current control to light-emitting diodes in a current control mode. In a deep dimming depth region, the reference signal (Vref2) is selected to apply constant-voltage control to the diodes in a voltage control mode.Type: GrantFiled: September 1, 2010Date of Patent: January 15, 2013Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha ToshibaInventors: Hirokazu Otake, Mitsuhiko Nishiie, Takuro Hiramatsu, Keiichi Shimizu
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Publication number: 20120326620Abstract: 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: August 31, 2012Publication date: December 27, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120325636Abstract: A power window switch has a case, a substrate disposed in the case, a window operation knob disposed on the case, a window lock button disposed on a front side of the window operation knob on the case, a window operation switch mechanism disposed in the case and activated in accordance with an operation of the window operation knob, a window lock switch mechanism disposed in the case and activated in accordance with an operation of the window lock button, and a connector having a terminal with a first terminal end protruding from the case and a second terminal end connected to the substrate. The window lock switch mechanism includes two conductive plate springs, and a pressing unit for pressing the plate springs.Type: ApplicationFiled: June 21, 2012Publication date: December 27, 2012Applicant: OMRON AUTOMOTIVE ELECTRONICS CO., LTD.Inventors: Takashi Nose, Manabu Sakai, Yasuhide Tanaka, Hidetoshi Yoshikawa, Akira Goto, Shiho Nakano, Takuya Nishioka, Tomohiro Takahashi, Yoshifumi Ohwa, Keiichi Shimizu, Daisuke Kitagawa, Kosuke Hirano, Masahiko Hara, Hiroaki Ohta
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Publication number: 20120320611Abstract: 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: 20120320565Abstract: 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: 20120319613Abstract: 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: August 31, 2012Publication date: December 20, 2012Applicant: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20120320609Abstract: 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