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公开(公告)号：US10896944B2
公开(公告)日：2021-01-19
申请号：US16580096
申请日：2019-09-24
Inventor： Teruhito Takeda , Hirofumi Konishi , Shinji Makimura
Abstract: An illumination lighting apparatus is configured to light a plurality of light-emitting elements connected in series to each other. The illumination lighting apparatus includes one photosensor and a detector. The one photosensor is configured to detect light emitted from the plurality of light-emitting elements. The detector is configured to perform detection of a light emission defect on the plurality of light-emitting elements based on the light detected by the one photosensor. Moreover, the detector performs the detection process at an initial stage of lighting of the plurality of light-emitting elements.
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公开(公告)号：US10349475B2
公开(公告)日：2019-07-09
申请号：US15660509
申请日：2017-07-26
Inventor： Masashi Motomura , Hirofumi Konishi
Abstract: A receiver circuit is configured to receive a transmission signal represented by a change in DC voltage applied across power supply lines according to transmission data. The receiver circuit is also configured to compare the DC voltage (sampled value(s) of a detection voltage) with a threshold, thereby detecting a change in the DC voltage. The receiver circuit is further configured to calculate the threshold from a voltage value of the DC voltage (the sampled value(s) of a detection voltage) input to a receiver input unit.
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公开(公告)号：US09826586B2
公开(公告)日：2017-11-21
申请号：US15406848
申请日：2017-01-16
Inventor： Masashi Motomura , Hirofumi Konishi , Kenichi Fukuda
IPC: H05B33/08
CPC classification number: H05B33/0815 , H05B33/0884
Abstract: A power supply includes an input for receiving a first DC voltage, an output for outputting a second DC voltage, a voltage conversion circuit configured to convert the first DC voltage into the second DC voltage, and a control circuit configured to control the voltage conversion circuit to vary a voltage value of the second DC voltage. The control circuit is configured to control the voltage conversion circuit so as to decrease the voltage value of the second DC voltage from a first voltage value to a second voltage value for a predetermined duration every time a predetermined period elapses. The first voltage value is equal to or greater than a voltage value necessary to keep lighting a light source. The second voltage value is smaller than the voltage value necessary to keep lighting the light source.
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公开(公告)号：US09832825B2
公开(公告)日：2017-11-28
申请号：US15373324
申请日：2016-12-08
Inventor： Masashi Motomura , Hirofumi Konishi , Kenichi Fukuda
CPC classification number: H05B33/0815 , H05B33/0845 , H05B37/0272
Abstract: The signal transmitting device includes: a transmitter-side input for receiving a first DC voltage; a transmitter-side output for outputting a second DC voltage; and a voltage conversion circuit configured to convert the first DC voltage into the second DC voltage. Further, the signal transmitting device includes a control circuit configured to control the voltage conversion circuit so that the second DC voltage has a voltage value (selected from a first voltage value and a second voltage value) which changes according to transmission data in a predetermined transmission period.
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Patent Agency Ranking
公开(公告)号：US10299338B2
公开(公告)日：2019-05-21
申请号：US15852973
申请日：2017-12-22
Inventor： Hirofumi Konishi , Masashi Motomura
Abstract: A sensor device according to an example of the embodiment is connected, on an input side rather than an illumination apparatus, to a main power source line of an illumination system to which a DC voltage is applied and to which the illumination apparatus is connected through a branch wire. The sensor device includes: a sensing unit that detects an object and outputs a detection signal; and a switch that is provided in the main power source line and connects or disconnects the main power source line by an on-off operation on the input side rather than the illumination apparatus. The switch is controlled to be turned on or off based on the detection signal of the sensing unit.
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公开(公告)号：US09820346B2
公开(公告)日：2017-11-14
申请号：US15416076
申请日：2017-01-26
Inventor： Kenichi Fukuda , Hirofumi Konishi , Masashi Motomura
IPC: H05B33/08 , H05B37/02 , F21S8/04 , F21V3/00 , F21V21/005 , F21V23/06 , F21Y115/10
CPC classification number: H05B33/0815 , F21S8/04 , F21V3/00 , F21V21/005 , F21V23/06 , F21Y2115/10 , H05B33/0845 , H05B33/0863 , H05B37/0263 , H05B37/0272 , Y02B20/346
Abstract: A control circuit is configured to, when switching a state of a light source from an extinguished state to a lighting state, control a voltage conversion circuit so that a second DC voltage has a voltage value which changes according to transmission data containing an activation command. A lighting device is configured to keep the state of the light source at the extinguished state until receiving the activation command from the receiver circuit, and to change the state of the light source to the lighting state when receiving the activation command from the receiver circuit.
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公开(公告)号：US11177629B2
公开(公告)日：2021-11-16
申请号：US16867128
申请日：2020-05-05
Inventor： Hirofumi Konishi , Shigeaki Yamasaki , Erika Kawabata , Yoshiharu Nagatani , Hiroshi Kitano
Abstract: A light source device according to an embodiment is used with a light guide member and a wavelength converting member, and includes a light-emitting element, a light sensor, and a driving unit. The light-emitting element radiates a light beam to be incident on a first end of the light guide member by being supplied with a drive current. The light sensor detects signal light, which has been incident on a second end of the light guide member and transmitted to the first end. The driving unit supplies the drive current to the light-emitting element and controls the drive current based on a result of detection of the signal light.
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公开(公告)号：US11147141B2
公开(公告)日：2021-10-12
申请号：US17003236
申请日：2020-08-26
Inventor： Hirofumi Konishi , Toshiaki Takenaka
IPC: H05B47/105 , H05B47/155 , F21V23/00 , F21K9/64 , F21Y115/30
Abstract: Lighting system includes light source that includes a plurality of light-emitting devices and emits first light; wavelength conversion member that converts part of the first light into second light; an optical system that applies the first light to wavelength conversion member; optical sensor that output monitor signal corresponding to the intensity of the second light; and output control circuit that controls light source and optical sensor. Output control circuit performs a light source inspection of a condition of light source and an optical system inspection of conditions of the optical system and wavelength conversion member in accordance with monitor signal. In the light source inspection, the output control circuit inspects each of light-emitting devices in sequence, and after having inspected one of light-emitting devices, suspends the light source inspection and performs the optical system inspection before inspection of another one of the light emitting devices.
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公开(公告)号：US10057949B2
公开(公告)日：2018-08-21
申请号：US15494604
申请日：2017-04-24
Inventor： Masashi Motomura , Hirofumi Konishi , Kenichi Fukuda
IPC: H05B33/08 , F21S8/04 , F21V3/00 , F21V21/34 , F21V23/06 , H02M3/158 , H02M7/04 , H05B37/02 , F21Y115/10 , H02M1/00
CPC classification number: H05B33/0815 , F21S8/046 , F21V3/00 , F21V21/34 , F21V23/06 , F21Y2115/10 , H02M3/158 , H02M3/1588 , H02M7/04 , H02M2001/0048 , H05B33/0845 , H05B37/02 , Y02B20/346 , Y02B70/1466 , Y02B70/1491
Abstract: A signal transmitting device includes an input unit, an output unit, and a step-down circuit. The input unit is configured to receive an input voltage. The output unit is configured to output an output voltage. The step-down circuit is configured to controllably adjust the output voltage by stepping down the input voltage. The step-down circuit includes first and second capacitors, a switch circuit, an inductor, first and second diodes, and a control circuit. The switch circuit includes a series circuit of first and second switches. The control circuit is configured to control the first and second switches to change a voltage value of the output voltage in order to transmit transmission data from the output unit.
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