Shiotsu
Fuminori Shiotsu, Shizuoka JP
Patent application number | Description | Published |
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20080197789 | LIGHT EMITTING DEVICE - A light emitting device includes multiple light units each of which includes a semiconductor light source, and a current supply control means for controlling supply of current to the semiconductor light source. A control unit includes a control signal generation means for generating and providing a control signal. The light emitting device also includes switching means for controlling feeding from a DC power source to a corresponding one of the light units in response to the control signal. Each of the switching means is coupled to a corresponding one of the light units through a feed line. | 08-21-2008 |
20080238344 | Light Emitting Apparatus - A light emitting apparatus includes a light source block with semiconductor light sources connected in series to each other. A resistor is connected in parallel with one or more of the semiconductor light sources and is connected to two detecting target portions in portions linked to respective electrodes of the semiconductor light sources. A ground fault detecting circuit is connected to one of the two detecting target portions disposed on a ground potential side. The light source block has one of its terminals connected to a power supply and its other terminal grounded. By detecting a change in the voltage through the ground fault detecting circuit, a ground fault can be detected. | 10-02-2008 |
20090129111 | VEHICULAR LAMP - A vehicular lamp is arranged to save power by not driving a cooling fan when an LED is unlit. The vehicular lamp is capable of reducing cost and stopping a supply of current to the LED even in the case of open wiring in a supply of current to the cooling fan. The vehicular lamp includes LEDs connected in series, a cooling fan connected in series with the LEDs and arranged to cool the LEDs. A current supply circuit receives power supplied from a power source and supplies current to the LEDs and the cooling fan. | 05-21-2009 |
20090154188 | VEHICLE LAMP - A vehicle lamp includes: N semiconductor light sources, wherein N is an integer of 1 or more; M fans configured to cool the N semiconductor light sources, wherein M is an integer of 1 or more; N current supply units configured to supply first current to the N semiconductor light sources, respectively; and a control unit configured to receive electric power supplied from an electric power source and supply second current to the N current supply units. The control unit includes: N switch elements that correspond to the N semiconductor light sources; M switch elements that correspond to the M fans; and a control circuit configured to control fan drive current supplied to the fans through the switch elements and the second current. The fans are coupled to the control unit. | 06-18-2009 |
20130088172 | SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT - A circuit for lighting a semiconductor light source is provided. The circuit includes: a switching regulator including a switching element and configured to generate a drive current for the semiconductor light source using the switching element; and a control circuit configured to control on-off of the switching element such that the magnitude of the drive current comes close to a targeted value. The control circuit includes: a comparator configured to compare the magnitude of the drive current with the targeted value; an up/down counter configured to count a digital value in a counting-up direction or counting-down direction, based on a comparison result of the comparator; a digital-to-analog converter configured to convert the counted digital value into an analog signal; and a drive circuit configured to control on/off of the switching element based on the analog signal. | 04-11-2013 |
Fuminori Shiotsu, Shizuoka-Shi JP
Patent application number | Description | Published |
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20120286687 | SEMICONDUCTOR LIGHT SOURCE LIGHTING CIRCUIT - A semiconductor light source lighting circuit includes a switching regulator that produces a drive current I | 11-15-2012 |
Isamu Shiotsu, Nagakute-Shi JP
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20160040726 | CLUTCH MECHANISM AND TRANSMISSION - Under the condition that the rotation speed of a first rotating shaft is higher than that of a second rotating shaft, supported portions go through right-handed helical flutes to perform an engaging operation. Under the condition that the rotation speed of the first rotating shaft is lower than that of the second rotating shaft, the supported portions go through left-handed helical flutes to perform the engaging operation. In a releasing operation, the supported portions go through the right-handed helical flutes to release a clutch mechanism under the condition that the rotation speed of the first rotating shaft is lower than that of the second rotating shaft, and the supported portions go through the left-handed helical flutes to release the clutch mechanism under the condition that the rotation speed of the first rotating shaft is higher than that of the second rotating shaft. | 02-11-2016 |
Isamu Shiotsu, Aichi JP
Patent application number | Description | Published |
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20090075775 | TORQUE TRANSMISSION STRUCTURE, TRACTION DRIVE TRANSMISSION DEVICE, AND STEERING DEVICE FOR VEHICLE - There is provided a compact and highly durable variable-speed traction drive transmission device. A traction drive transmission device which uses the traction of rolling bodies K arranged between an input shaft Si and an output shaft So to change the number of revolutions of the input shaft Si into a desired transmission ratio and output from the output shaft So, has a rotation axis of the rolling bodies K arranged at an incline so that it is not orthogonal to the axis of the input shaft Si and the output shaft So, and there is provided: a load regulation cam | 03-19-2009 |
Isamu Shiotsu, Ritto-Shi JP
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20110136619 | SPEED INCREASING/DECREASING APPARATUS - A first rotary shaft and a second rotary are disposed such that they are rotatable around a rotation axis. The second rotary shaft has a cylindrical supporting part that covers the end section of the first rotary shaft. A case supports the first rotary shaft and the second rotary shaft. A first rolling bearing is disposed between the first rotary shaft and the case and supports the first rotary shaft such that it is rotatable. A second rolling bearing is disposed between the supporting part and the first rotary shaft and supports the first rotary shaft and the second rotary shaft such that they are rotatable relative to each other. A transmission part of the second rotary shaft transmits to the second rolling bearing a preload force that pushes the second rotary shaft to the first rotary shaft side. A load-receiving part of the case that receives the preload force transmitted from the second rolling bearing to the first rolling bearing. | 06-09-2011 |
Isamu Shiotsu, Tokyo JP
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20110269594 | MICRO-TRACTION DRIVE - A micro-traction drive includes an inner ring that is formed in a cylindrical shape and is supported so as to be rotatable about a rotation axis; an outer ring formed in a cylindrical shape having a larger diameter than the inner ring; a plurality of rolling elements rolling while being in contact with an outer circumferential surface of the inner ring and an inner circumferential surface of the outer ring; a retaining portion that keeps the plurality of rolling elements apart from one another at predetermined intervals; a pressing portion that applies a preload between the inner ring and the rolling elements and between the outer ring and the rolling elements; and an input shaft that is formed to have a smaller diameter than the inner circumferential surface of the inner ring, is disposed adjacent to the inner ring, and transmits a rotational driving force to the inner circumferential surface of the inner ring. One of the outer ring and the retaining portion is connected to the output shaft, and the other thereof is fixed. | 11-03-2011 |
Shinichi Shiotsu, Osaka-Shi JP
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20110013096 | VIDEO PROJECTOR - A projector includes a lamp used as a light source, a lamp driver that drives the lamp by supplying a lamp current to the lamp, and a control unit that controls the lamp current with the lamp driver. The control unit controls the lamp current that is supplied when commencing illumination of the lamp in correspondence with an activation frequency of the lamp. | 01-20-2011 |
Yoshihiro Shiotsu, Hyogo JP
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20160104923 | BATTERY UNIT - A battery unit includes the following elements: a battery module that includes a plurality of battery cells and a gas discharge opening for discharging gas jetted from each of the battery cells; and a gas discharge duct in communication with the gas discharge opening and discharging the gas to the outside of the battery module. The gas discharge duct includes at least one duct outlet of which cross-sectional area of the channel in the duct outlet or the sum of cross-sectional areas of the channel in the respective duct outlets is larger than a cross-sectional area of the channel on the upstream side in the flow direction of the gas. The gas discharge duct also includes a temperature reducing member that is fixed to the periphery of the duct outlet so as to block part of the channel and reduces the temperature of the gas going through gaps. | 04-14-2016 |