Tadashi Murakami
Tadashi Murakami, Hirakata-Shi JP
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20100295479 | Illumination apparatus - An illumination apparatus includes a lamp load; a lighting circuit unit for turning on the lamp load; a sensor unit; an amplifier circuit unit for; a control unit for controlling the lighting circuit unit to turn on or off the lamp load depending on presence or absence of a human body; and a power supply unit. The control unit determines that a human body is present when a voltage of the. amplified detection signal exceeds a first threshold voltage while the lighting circuit unit is not operated and the lamp load is turned off, and determines that a human body is present if a voltage of the amplified detection signal exceeds a second threshold voltage while the lighting circuit unit is operated and the lamp load is turned on, a magnitude of the second threshold voltage being set to be higher than a magnitude of the first threshold voltage. | 11-25-2010 |
Tadashi Murakami, Hirakata JP
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20100102758 | Illumination apparatus - An illumination apparatus includes a light source unit having solid light-emitting elements and a sensor unit having a wave transmission portion for transmitting energy waves of specified frequency and a wave reception portion for receiving the energy waves reflected from an object. The sensor unit outputs a detection signal by detecting the object within a detection range based on the difference in frequency between the transmitted and received energy waves. The illumination apparatus further includes a control unit responsive to the detection signal from the sensor unit for performing a control operation to turn on the light source unit, and a power source unit for supplying electric power to the light source unit. The power source unit is arranged outside the detection range of the sensor unit. The sensor unit is provided on the opposite side to the direction of light irradiated from the light source unit. | 04-29-2010 |
20120126706 | ILLUMINATION DEVICE INCLUDING DOPPLER SENSOR - An illumination device includes a cover; a lamp including a light emitting unit; and a doppler sensor including a receiving unit, disposed on the same side as the lamp with respect to a first plane including a surface of the cover facing the lamp. In a cross section that intersects the receiving unit and is orthogonal to a central axis of the light emitting unit, “θ” between a boundary line of a detectable range of the receiving unit close to the lamp and a normal to the first plane, “d” between the central axis and the first plane, “r” of the light emitting unit; “y” between the first plane and the receiving unit; and “x” between the receiving unit and a second plane that includes the central axis of the light emitting unit and is orthogonal to the first plane satisfy the following equation. | 05-24-2012 |
Tadashi Murakami, Kadoma-Shi JP
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20100052571 | Illumination System - An illumination system includes a plurality of illumination devices and a number of sensor blocks. In each of the sensor blocks, an active sensor is provided to detect a moving object traveling within a detection area thereof and plural amplifier circuits is provided to divide a detection signal transmitted from the active sensor into plural frequency bands and for amplifying signal components of the frequency bands. Provided in a one-to-one relationship with the amplifier circuits is plural judgment units that, based on the amplified signal components of the frequency bands provided from the amplifier circuits, judges whether the moving object is travelling at a travel velocity corresponding to any one of the frequency bands. A control unit is also provided to perform a turn-on control on at least one of the illumination devices based on judgment results made by the judgment units. | 03-04-2010 |
Tadashi Murakami, Hirakata City JP
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20120206288 | DOPPLER SENSOR AND ILLUMINATION DEVICE INCLUDING SAME - A doppler sensor includes a doppler signal generation unit and a determining unit. The doppler signal generation unit serves to transmit an electric wave to a detection range and receiving electric waves from a detection range, and generating a doppler signal based on a transmission signal used in transmitting the electric wave and a reception signal obtained from the received electric waves, and the determining unit serves to determine whether or not there exists a human body in the detection range through a spectrum analysis using a peak frequency, which is a frequency having the highest intensity in a difference spectrum obtained by subtracting a background spectrum from the spectrum of the doppler signal. | 08-16-2012 |
20120212965 | OPTICAL MEMBER AND ILLUMINATION APPARATUS USING SAME - An optical member for refracting light emitted from a light source and projecting the light from a light projecting surface thereof includes a plurality of concave or convex portions formed on the light projecting surface. The concave or convex portions are concentrically arranged on a plurality of circles having a common center point. The concave or convex portions on the circles adjoining to each other are arranged in different phase positions with respect to radial lines extending from the center point. | 08-23-2012 |
Tadashi Murakami, Chiyoda-Ku JP
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20130093273 | ROTARY ELECTRIC MACHINE - A rotary electric machine includes a rotor, a stator having coils wound to surround the rotor, a cylindrical ring member fixedly mounted on the stator by shrinkage fitting, and a frame disposed on the outside of the ring member with a gap created in between. The distance of the gap varies as a result of thermal expansion of the stator and the ring member. An outer surface of the ring member goes into contact with the frame when the stator and the ring member thermally expand, whereby the stator and the ring member are efficiently cooled. | 04-18-2013 |
20150130311 | ROTARY ELECTRIC MACHINE AND METHOD FOR MANUFACTURING ROTARY ELECTRIC MACHINE STATOR - A plurality of core blocks that are arranged into an annular shape are inserted into and fixed to a cylindrical frame, and are disposed inside the frame, a bolt passage member that is produced as a solid body and that has a bolt passage aperture that passes through in a longitudinal direction is fixed by welding to an outer circumferential surface of the frame such that the longitudinal direction thereof is oriented in the axial direction of the frame, and a stator is held on the housing by fastening a bolt that is passed through the bolt passage aperture into a fixing portion that is formed on the housing. | 05-14-2015 |
Tadashi Murakami, Ichihara-Shi JP
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20130324733 | BINUCLEAR METAL COMPLEX, AND ORGANIC ELECTROLUMINESCENCE ELEMENT COMPRISING SAME - A novel binuclear metal complex containing a biimidazole as a bridging ligand. The binuclear metal complex can be used as a material for an organic electroluminescence element. | 12-05-2013 |
Tadashi Murakami, Mie JP
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20160077243 | ILLUMINATION DEVICE - An illumination device includes a light source, a device body to which the light source is mounted, and an optical member configured to control light distribution of light emitted from the light source. The light source includes LEDs arranged in a matrix form or a linear form. The optical member includes a lens portion configured to control light distribution of the LEDs on a row-by-row basis. The lens portion includes a recessed incidence portion on which the light emitted from the LEDs is incident, an elongated emission portion opposite to the incidence portion, and a pair of reflection portions which interconnects the incidence portion and the emission portion along a longitudinal direction thereof and totally reflects the light incident from the incidence portion. The emission portion is formed to have a plurality of successive convex surfaces when seen in a cross section taken along the longitudinal direction thereof. | 03-17-2016 |