Patents by Inventor Toshiyuki Hiraoka
Toshiyuki Hiraoka 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: 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: 20120326614Abstract: According to one embodiment, a luminaire includes a dim lighting circuit, an emergency unit, a dimming-signal input section, and a dimming control circuit. The dim lighting circuit dimly lights a light source at a dimming ratio corresponding to a dimming signal. The emergency unit includes a charging circuit for charging a battery with an external power supply in a normal time and supplies a power supply of the battery to the dim lighting circuit in an emergency. The dimming-signal input section receives the input of the dimming signal from the outside. The dimming control circuit gives the dimming signal input from the dimming-signal input section to the dim lighting circuit in a normal time and gives a dimming signal having a dimming ratio for an emergency to the dim lighting circuit in an emergency.Type: ApplicationFiled: March 5, 2012Publication date: December 27, 2012Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Toshio Tsuji, Toshiyuki Hiraoka, Masahiko Kamata, Masaru Inoue, Noritaka Tano, Makoto Kawagoe, Kazuya Tomiyama
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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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Patent number: 8305010Abstract: There is provided an LED lighting device having a satisfactory temperature characteristic and a small amount of variation in output current. The step-down chopper is provided with a first circuit including the switching element, the impedance means and a first inductor connected in series and a second circuit including the first inductor and a diode connected in series. A self-excited drive signal generation circuit is provided with a second inductor magnetically coupled with the first inductor and applies a voltage induced in the second inductor to the switching element to keep the switching element on. A turn-off circuit outputs an output voltage when the voltage of the impedance means detected by a comparator exceeds the reference value, and the output voltage allows a switching element to turn on to short-circuit the output terminals of the self-excited drive signal generation circuit, resulting in that the switching element is turned off.Type: GrantFiled: October 15, 2009Date of Patent: November 6, 2012Assignees: Toshiba Lighting & Technology Corporation, Kabushiki Kaisha ToshibaInventors: Masahiko Kamata, Hajime Osaki, Hirokazu Otake, Shinya Hakuta, Takuro Hiramatsu, Toshiyuki Hiraoka, Naoko Iwai
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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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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: 20110148322Abstract: 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: March 1, 2011Publication date: June 23, 2011Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Patent number: 7952295Abstract: 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: May 30, 2008Date of Patent: May 31, 2011Assignee: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Publication number: 20110025206Abstract: Certain embodiments provide an LED lighting equipment including a lighting main body. An LED power device has a DC power source and a DC-DC converter having an input terminal connected to the DC power source and the DC-DC converter having an output terminal. An LED light source has a board and a plurality of LED packages; each including a plurality of LED chips connected in series. The LED packages are mounted on the board and connected in series to the output terminal of the DC-DC converter.Type: ApplicationFiled: July 28, 2010Publication date: February 3, 2011Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Takuro Hiramatsu, Masahiko Kamata, Hiroshi Kubota, Hiroshi Terasaka, Toshiyuki Hiraoka
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Publication number: 20100097007Abstract: There is provided an LED lighting device having a satisfactory temperature characteristic and a small amount of variation in output current. The step-down chopper is provided with a first circuit including the switching element, the impedance means and a first inductor connected in series and a second circuit including the first inductor and a diode connected in series. A self-excited drive signal generation circuit is provided with a second inductor magnetically coupled with the first inductor and applies a voltage induced in the second inductor to the switching element to keep the switching element on. A turn-off circuit outputs an output voltage when the voltage of the impedance means detected by a comparator exceeds the reference value, and the output voltage allows a switching element to turn on to short-circuit the output terminals of the self-excited drive signal generation circuit, resulting in that the switching element is turned off.Type: ApplicationFiled: October 15, 2009Publication date: April 22, 2010Applicants: Toshiba Lighting & Technology Corporation, KABUSHIKI KAISHA TOSHIBAInventors: Masahiko Kamata, Hajime Osaki, Hirokazu Otake, Shinya Hakuta, Takuro Hiramatsu, Toshiyuki Hiraoka, Naoko Iwai
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Publication number: 20080297062Abstract: 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: May 30, 2008Publication date: December 4, 2008Applicant: Toshiba Lighting & Technology CorporationInventors: Hirokazu Otake, Toshiyuki Hiraoka, Keiichi Shimizu, Nobuo Shibano
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Patent number: 7388337Abstract: A fluorescent lamp lighting apparatus according to the present invention comprises an initial illuminance correction control circuit which sets a fluorescent lamp to an initial illuminance correction control lighting mode, a switching portion which changes the fluorescent lamp from the initial illuminance correction control lighting mode to an external control dimming mode when a predetermined external dimming signal is detected, and a control portion which gradually dimming so as to achieve a dimming level of a switched mode when switching the initial illuminance correction control lighting mode and the external control dimming mode, and control so as to achieve a dimming level corresponding to a cumulative lighting time of the fluorescent lamp when the changed mode is the initial illuminance correction control lighting mode.Type: GrantFiled: June 15, 2006Date of Patent: June 17, 2008Assignee: Toshiba Lighting & Technology CorporationInventors: Koji Takahasi, Toshiyuki Hiraoka, Noriyuki Kitamura, Naoko Iwai, Kazuyuki Uratani, Shinji Nogi, Toru Ishikita, Isao Yamazaki
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Patent number: 7256547Abstract: An electrolytic capacitor and a ballast choke of a lighting circuit, are disposed on a first face of a circuit board facing a base, and a one-package switch of the lighting circuit is disposed on a second face, facing a fluorescent lamp. The one-package switch comprises field effect transistors contained in a single package and serve as two inverter switches for driving the fluorescent lamp. The one-package switch is a generally rectangular SMD with dimensions of not more than 6 mm respectively in length and width and mounted on the second face of the circuit board by means of terminals of the one-package switch. The one-package switch enhances heat dissipation properties of the circuit, enables the reduction of its dimensions, and increases the mounting efficiency.Type: GrantFiled: March 11, 2004Date of Patent: August 14, 2007Assignee: Toshiba Lighting & Technology CorporationInventors: Hiroshi Kubota, Toshiyuki Hiraoka, Shinya Hakuta, Tsutomu Araki, Shinichiro Matsumoto, Mari Nakamura
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Publication number: 20070075650Abstract: A fluorescent lamp lighting apparatus according to the present invention comprises an initial illuminance correction control circuit which sets a fluorescent lamp to an initial illuminance correction control lighting mode, a switching portion which changes the fluorescent lamp from the initial illuminance correction control lighting mode to an external control dimming mode when a predetermined external dimming signal is detected, and a control portion which gradually dimming so as to achieve a dimming level of a switched mode when switching the initial illuminance correction control lighting mode and the external control dimming mode, and control so as to achieve a dimming level corresponding to a cumulative lighting time of the fluorescent lamp when the changed mode is the initial illuminance correction control lighting mode.Type: ApplicationFiled: June 15, 2006Publication date: April 5, 2007Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATIONInventors: Koji Takahashi, Toshiyuki Hiraoka, Noriyuki Kitamura, Naoko Iwai, Kazuyuki Uratani, Shinji Nogi, Toru Ishikita, Isao Yamazaki
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Publication number: 20060087258Abstract: An electrolytic capacitor and a ballast choke of a lighting circuit, are disposed on a first face of a circuit board facing a base, and a one-package switch of the lighting circuit is disposed on a second face, facing a fluorescent lamp. The one-package switch comprises field effect transistors contained in a single package and serve as two inverter switches for driving the fluorescent lamp. The one-package switch is a generally rectangular SMD with dimensions of not more than 6 mm respectively in length and width and mounted on the second face of the circuit board by means of terminals of the one-package switch. The one-package switch enhances heat dissipation properties of the circuit, enables the reduction of its dimensions, and increases the mounting efficiency.Type: ApplicationFiled: March 11, 2004Publication date: April 27, 2006Inventors: Hiroshi Kubota, Toshiyuki Hiraoka, Shinya Hakuta, Tsutomu Araki, Shinichiro Matsumoto, Mari Nakamura
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Patent number: 6794801Abstract: A compact selfballasted fluorescent lamp includes a fluorescent arc tube forming a crooked discharge path, a housing comprised of a first end portion open to be fit thereon with a bulb-base, a middle portion and a second end portion open to be mounted thereto with the fluorescent arc tube, a lighting circuit module accommodated in the housing, the unit being provided with a circuit board and two or more circuit components mounted on the circuit board for constituting a lighting circuit for lighting the fluorescent arc tube, and a thermal conductor having a thermal conductivity of 0.1 W/(m·K) or more, which is filled in the housing, extending upwards from a components mounting side of the circuit board of the lighting circuit module and contacting with the inner wall of the housing lying on the side of the first end portion of the housing, thereby covering at least one of the circuit components of the lighting circuit.Type: GrantFiled: October 31, 2002Date of Patent: September 21, 2004Assignee: Toshiba Lighting & Technology CorporationInventors: Takeo Yasuda, Masahiro Toda, Shinichiro Matsumoto, Tsutomu Araki, Toshiyuki Hiraoka, Yoshiyuki Matsunaga
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Publication number: 20030080691Abstract: A compact selfballasted fluorescent lamp includes a fluorescent arc tube forming a crooked discharge path, a housing comprised of a first end portion open to be fit thereon with a bulb-base, a middle portion and a second end portion open to be mounted thereto with the fluorescent arc tube, a lighting circuit module accommodated in the housing, the unit being provided with a circuit board and two or more circuit components mounted on the circuit board for constituting a lighting circuit for lighting the fluorescent arc tube, and a thermal conductor having a thermal conductivity of 0.1 W/(m·K) or more, which is filled in the housing, extending upwards from a components mounting side of the circuit board of the lighting circuit module and contacting with the inner wall of the housing lying on the side of the first end portion of the housing, thereby covering at least one of the circuit components of the lighting circuit.Type: ApplicationFiled: October 31, 2002Publication date: May 1, 2003Inventors: Takeo Yasuda, Masahiro Toda, Shinichiro Matsumoto, Tsutomu Araki, Toshiyuki Hiraoka, Yoshiyuki Matsunaga
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Patent number: 6038149Abstract: A power supply device and a discharge lamp lighting device which are capable of reducing high harmonic elements and improving a crest factor. A full-wave rectifying circuit is connected to a commercial AC power supply. A first capacitor, a diode and second capacitor, having a smaller capacitance than the first capacitor, are connected to the full-wave rectifying circuit. A partially smoothed circuit consisting of a charge capacitor, an inductor and a diode is connected to the second capacitor. A parallel resonance circuit and a collector-emitter of a transistor are connected to the partially smoothed circuit. The parallel resonance circuit consists of a primary winding of an inverter transformer and a first resonance capacitor. A second resonance capacitor is connected between the emitter and the collector of the transistor. Filaments of a fluorescent lamp are connected to a secondary winding of the inverter transformer. A starting capacitor is connected to the filaments.Type: GrantFiled: December 22, 1997Date of Patent: March 14, 2000Assignee: Kabushiki Kaisha TECInventors: Toshiyuki Hiraoka, Masahiro Sugiyama, Hiroshi Kubota, Takafumi Takeda, Kazuyuki Yamamoto