Patents by Inventor Masaru IGAKI
Masaru IGAKI 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: 9488355Abstract: An LED lamp (1) is employed in a state mounted on a lighting fixture. The LED lamp (1) includes an LED source portion (2) including a plurality of LED chips, an illuminance sensor module (12) detecting ambient illuminance, and a controller controlling the LED source portion (2) in response to illuminance of ambient light other than light emitted by the LED source portion (2) on the basis of an output signal received from the illuminance sensor module (12) when the LED source portion (2) is in a lighting-up state. When the LED source portion (2) is in the lighting-up state, there is a possibility that the illuminance sensor module (12) detects not only the ambient light illuminance but also spontaneous light illuminance. The controller eliminates influence by the spontaneous light illuminance, and controls the LED source portion (2) in response to the illuminance of the ambient light.Type: GrantFiled: June 4, 2015Date of Patent: November 8, 2016Assignee: ROHM CO., LTD.Inventors: Masaru Igaki, Masahide Tanaka
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Patent number: 9332618Abstract: An LED lamp includes LED chips, a translucent cover housing the LED chips, a motion sensor unit, a condensing lens, and a power unit. The motion sensor unit includes a light receiving element for light of a predetermined wavelength. The lens condenses light of the predetermined wavelength onto the light receiving element. The power unit controls the state of operation of the LED chips based on an output from the motion sensor unit. The motion sensor unit includes a light shielding member disposed to overlap the light receiving element in an optical axis direction of the condensing lens and also to surround the light receiving element as viewed in the optical axis direction. The light shielding member is made of a material having a lower light transmissivity than that of the condensing lens for a range of wavelengths including the predetermined wavelength.Type: GrantFiled: April 9, 2015Date of Patent: May 3, 2016Assignee: ROHM CO., LTD.Inventors: Yoshiaki Nagashima, Masaru Igaki
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Publication number: 20160025315Abstract: A lighting system includes a main power source, a power switch, a daylight white color light source driver, an incandescent color light source driver, a first light source unit, and a second light source unit. The power switch includes a first terminal connected to the main power source, a second terminal and a control terminal. The two drivers are connected to the second terminal of the power switch. The first light source unit is driven by the daylight white color light source driver. The second light source unit is driven by the incandescent color light source driver. A switch driving circuit for applying power-saving switch signals is connected to the control terminal of the power switch, and a signal processing circuit for outputting instruction signals is connected to the switch driving circuit.Type: ApplicationFiled: October 5, 2015Publication date: January 28, 2016Inventors: Masaru IGAKI, Kohei MIZUTA
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Patent number: 9185753Abstract: A lighting system includes a main power source, a power switch, a daylight white color light source driver, an incandescent color light source driver, a first light source unit, and a second light source unit. The power switch includes a first terminal connected to the main power source, a second terminal and a control terminal. The two drivers are connected to the second terminal of the power switch. The first light source unit is driven by the daylight white color light source driver. The second light source unit is driven by the incandescent color light source driver. A switch driving circuit for applying power-saving switch signals is connected to the control terminal of the power switch, and a signal processing circuit for outputting instruction signals is connected to the switch driving circuit.Type: GrantFiled: July 20, 2012Date of Patent: November 10, 2015Assignee: ROHM CO., LTD.Inventors: Masaru Igaki, Kohei Mizuta
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Publication number: 20150285479Abstract: An LED lamp (1) is employed in a state mounted on a lighting fixture. The LED lamp (1) includes an LED source portion (2) including a plurality of LED chips, an illuminance sensor module (12) detecting ambient illuminance, and a controller controlling the LED source portion (2) in response to illuminance of ambient light other than light emitted by the LED source portion (2) on the basis of an output signal received from the illuminance sensor module (12) when the LED source portion (2) is in a lighting-up state. When the LED source portion (2) is in the lighting-up state, there is a possibility that the illuminance sensor module (12) detects not only the ambient light illuminance but also spontaneous light illuminance. The controller eliminates influence by the spontaneous light illuminance, and controls the LED source portion (2) in response to the illuminance of the ambient light.Type: ApplicationFiled: June 4, 2015Publication date: October 8, 2015Inventors: Masaru IGAKI, Masahide TANAKA
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Publication number: 20150216020Abstract: An LED lamp includes LED chips, a translucent cover housing the LED chips, a motion sensor unit, a condensing lens, and a power unit. The motion sensor unit includes a light receiving element for light of a predetermined wavelength. The lens condenses light of the predetermined wavelength onto the light receiving element. The power unit controls the state of operation of the LED chips based on an output from the motion sensor unit. The motion sensor unit includes a light shielding member disposed to overlap the light receiving element in an optical axis direction of the condensing lens and also to surround the light receiving element as viewed in the optical axis direction. The light shielding member is made of a material having a lower light transmissivity than that of the condensing lens for a range of wavelengths including the predetermined wavelength.Type: ApplicationFiled: April 9, 2015Publication date: July 30, 2015Inventors: Yoshiaki NAGASHIMA, Masaru IGAKI
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Patent number: 9080758Abstract: An LED lamp (1) is employed in a state mounted on a lighting fixture. The LED lamp (1) includes an LED source portion (2) including a plurality of LED chips, an illuminance sensor module (12) detecting ambient illuminance, and a controller controlling the LED source portion (2) in response to illuminance of ambient light other than light emitted by the LED source portion (2) on the basis of an output signal received from the illuminance sensor module (12) when the LED source portion (2) is in a lighting-up state. When the LED source portion (2) is in the lighting-up state, there is a possibility that the illuminance sensor module (12) detects not only the ambient light illuminance but also spontaneous light illuminance. The controller eliminates influence by the spontaneous light illuminance, and controls the LED source portion (2) in response to the illuminance of the ambient light.Type: GrantFiled: April 17, 2012Date of Patent: July 14, 2015Assignee: ROHM CO., LTD.Inventors: Masaru Igaki, Masahide Tanaka
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Patent number: 9028090Abstract: An LED lamp includes LED chips, a translucent cover housing the LED chips, a motion sensor unit, a condensing lens, and a power unit. The motion sensor unit includes a light receiving element for light of a predetermined wavelength. The lens condenses light of the predetermined wavelength onto the light receiving element. The power unit controls the state of operation of the LED chips based on an output from the motion sensor unit. The motion sensor unit includes a light shielding member disposed to overlap the light receiving element in an optical axis direction of the condensing lens and also to surround the light receiving element as viewed in the optical axis direction. The light shielding member is made of a material having a lower light transmissivity than that of the condensing lens for a range of wavelengths including the predetermined wavelength.Type: GrantFiled: August 21, 2012Date of Patent: May 12, 2015Assignee: Rohm Co., Ltd.Inventors: Yoshiaki Nagashima, Masaru Igaki
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Patent number: 8894268Abstract: An LED lightbulb is configured to properly illuminate a broader region. The LED lightbulb includes a light emitting unit, a pedestal, a power source unit, a heat dissipator, a base, and a globe swelling toward one side in a first direction for enclosing the light emitting unit. The globe is configured to diffusingly transmit light from the light emitting unit. The light emitting unit provides a light amount not less than 50% of the maximum light amount in a region not exceeding ±60° about the central axis extending in the first direction set as 0°. The globe provides a light amount not less than 50% in a region exceeding ±125° about the central axis set as 0°.Type: GrantFiled: June 28, 2012Date of Patent: November 25, 2014Assignee: Rohm Co., Ltd.Inventors: Masaru Igaki, Hirotaka Shimizu, Kohei Mizuta, Hideharu Osawa
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Patent number: 8830067Abstract: The illumination device disclosed in the present specification has a light source, a touchless sensor for detecting proximity and movement of an object without contact, and a control unit for controlling the driving of the light source on the basis of an output of the touchless sensor.Type: GrantFiled: July 21, 2011Date of Patent: September 9, 2014Assignee: Rohm Co., Ltd.Inventors: Masaru Igaki, Hideharu Osawa, Takuya Tsuchikawa
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Patent number: 8820966Abstract: The present invention provides a LED light bulb which is capable of providing the gorgeous and artistic impressions. The LED light bulb comprises a plurality of LED chips, a globe covering the LED chips and allowing the light emitted from the LED chips to penetrate, and a bulb connector, wherein at least one portion of the globe has a concave-convex part.Type: GrantFiled: January 25, 2012Date of Patent: September 2, 2014Assignee: Rohm Co., Ltd.Inventors: Masaru Igaki, Akio Yabugami
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Patent number: 8593043Abstract: An LED lighting apparatus includes a support unit including a support surface facing an illumination side, a plurality of LED chips supported on the support surface, and a cover that covers the support surface and transmits light from the LED chips. The cover includes a periphery which, as viewed in plan, includes four first sides that are spaced apart from each other and four second sides each connecting ends of adjacent ones of the first sides. The first sides consisting of two pairs of parallel sides, and each of the first sides constituting one of the two pairs and each of the first sides constituting the other one of the two pairs form a right angle. Each of the first sides and each of the adjacent second sides form an obtuse angle.Type: GrantFiled: June 26, 2012Date of Patent: November 26, 2013Assignee: Rohm Co., Ltd.Inventors: Masaru Igaki, Kohei Mizuta
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Patent number: 8545057Abstract: An LED lighting device includes a plurality of LED chips and a pair of side mounting faces. The distance between the side mounting faces becomes smaller from the base side toward the extremity side in the x direction. The side mounting faces face mutually opposite sides in the y direction. Also, the distance between the side mounting faces becomes shorter from the back side toward the front side in the z direction that is perpendicular to both the x direction and the y direction. The plurality of LED chips include LED chips mounted on the pair of side mounting faces. The LED lighting device illuminates an illumination target with a uniform illuminance distribution.Type: GrantFiled: March 7, 2011Date of Patent: October 1, 2013Assignee: Rohm Co., Ltd.Inventor: Masaru Igaki
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Patent number: 8523395Abstract: A light emitting diode (LED) lamp includes a plurality of LED chips and a heat dissipation member configured to dissipate heat generated from the LED chips. The heat dissipation member includes a tubular unit having a constant cross-section perpendicular to an axial direction, and a plurality of fins, each of which extends outwardly from the tubular unit and extends in the axial direction, having a constant thickness in the axial direction.Type: GrantFiled: July 22, 2011Date of Patent: September 3, 2013Assignee: Rohm Co., Ltd.Inventors: Masaru Igaki, Takao Iemoto, Hirotaka Shimizu
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Publication number: 20130049598Abstract: An LED lamp includes LED chips, a translucent cover housing the LED chips, a motion sensor unit, a condensing lens, and a power unit. The motion sensor unit includes a light receiving element for light of a predetermined wavelength. The lens condenses light of the predetermined wavelength onto the light receiving element. The power unit controls the state of operation of the LED chips based on an output from the motion sensor unit. The motion sensor unit includes a light shielding member disposed to overlap the light receiving element in an optical axis direction of the condensing lens and also to surround the light receiving element as viewed in the optical axis direction. The light shielding member is made of a material having a lower light transmissivity than that of the condensing lens for a range of wavelengths including the predetermined wavelength.Type: ApplicationFiled: August 21, 2012Publication date: February 28, 2013Applicant: ROHM CO., LTD.Inventors: Yoshiaki NAGASHIMA, Masaru IGAKI
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Publication number: 20130020955Abstract: A lighting system includes a main power source, a power switch, a daylight white color light source driver, an incandescent color light source driver, a first light source unit, and a second light source unit. The power switch includes a first terminal connected to the main power source, a second terminal and a control terminal. The two drivers are connected to the second terminal of the power switch. The first light source unit is driven by the daylight white color light source driver. The second light source unit is driven by the incandescent color light source driver. A switch driving circuit for applying power-saving switch signals is connected to the control terminal of the power switch, and a signal processing circuit for outputting instruction signals is connected to the switch driving circuit.Type: ApplicationFiled: July 20, 2012Publication date: January 24, 2013Applicant: ROHM CO., LTD.Inventors: Masaru IGAKI, Kohei MIZUTA
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Publication number: 20130003361Abstract: An LED lightbulb is configured to properly illuminate a broader region. The LED lightbulb includes a light emitting unit, a pedestal, a power source unit, a heat dissipator, a base, and a globe swelling toward one side in a first direction for enclosing the light emitting unit. The globe is configured to diffusingly transmit light from the light emitting unit. The light emitting unit provides a light amount not less than 50% of the maximum light amount in a region not exceeding ±60° about the central axis extending in the first direction set as 0°. The globe provides a light amount not less than 50% in a region exceeding ±125° about the central axis set as 0°.Type: ApplicationFiled: June 28, 2012Publication date: January 3, 2013Applicant: ROHM CO., LTD.Inventors: Masaru IGAKI, Hirotaka SHIMIZU, Kohei MIZUTA, Hideharu OSAWA
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Publication number: 20130003360Abstract: An LED lighting apparatus includes a support unit including a support surface facing an illumination side, a plurality of LED chips supported on the support surface, and a cover that covers the support surface and transmits light from the LED chips. The cover includes a periphery which, as viewed in plan, includes four first sides that are spaced apart from each other and four second sides each connecting ends of adjacent ones of the first sides. The first sides consisting of two pairs of parallel sides, and each of the first sides constituting one of the two pairs and each of the first sides constituting the other one of the two pairs form a right angle. Each of the first sides and each of the adjacent second sides form an obtuse angle.Type: ApplicationFiled: June 26, 2012Publication date: January 3, 2013Applicant: ROHM CO., LTD.Inventors: Masaru IGAKI, Kohei MIZUTA
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Publication number: 20120306377Abstract: An LED lamp (1) is employed in a state mounted on a lighting fixture. The LED lamp (1) includes an LED source portion (2) including a plurality of LED chips, an illuminance sensor module (12) detecting ambient illuminance, and a controller controlling the LED source portion (2) in response to illuminance of ambient light other than light emitted by the LED source portion (2) on the basis of an output signal received from the illuminance sensor module (12) when the LED source portion (2) is in a lighting-up state. When the LED source portion (2) is in the lighting-up state, there is a possibility that the illuminance sensor module (12) detects not only the ambient light illuminance but also spontaneous light illuminance. The controller eliminates influence by the spontaneous light illuminance, and controls the LED source portion (2) in response to the illuminance of the ambient light.Type: ApplicationFiled: April 17, 2012Publication date: December 6, 2012Applicant: ROHM CO., LTD.Inventors: Masaru IGAKI, Masahide TANAKA
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Publication number: 20120188767Abstract: The present invention provides a LED light bulb which is capable of providing the gorgeous and artistic impressions. The LED light bulb comprises a plurality of LED chips, a globe covering the LED chips and allowing the light emitted from the LED chips to penetrate, and a bulb connector, wherein at least one portion of the globe has a concave-convex part.Type: ApplicationFiled: January 25, 2012Publication date: July 26, 2012Applicant: ROHM CO., LTD.Inventors: Masaru Igaki, Akio Yabugami