Patent application number | Description | Published |
20100231138 | LED POWER-SOURCE CIRCUIT AND ILLUMINATION FIXTURE USING THE SAME - An LED power-source circuit includes an input filter circuit including noise prevention capacitors and a line filter, a diode bridge connected to the input filter circuit, a smoothing capacitor connected to an output of the diode bridge and having a capacitance of 1 μF or less, a DC-DC conversion circuit connected to the smoothing capacitor, and an LED assembly connected to an output of the DC-DC conversion circuit. Grounding capacitors are coupled to ground from an input power line between the line filter and the diode bridge. The total capacitance from the input power line to ground is set to be 1/200 or less of that of the smoothing capacitor. | 09-16-2010 |
20110204823 | LED DRIVER CIRCUIT WITH OPEN LOAD DETECTION AND ASSOCIATED CONTROL METHOD - An LED driver circuit prevents an increase in output voltage of a DC/DC converter in an open circuit condition associated with removal or failure of an LED lighting device. A DC power source provides a first DC voltage across positive and negative voltage rails. A DC/DC converter includes a switching element which when turned ON/OFF provides a second DC voltage across first and second ends of a capacitor which further define first and second LED lighting device connection terminals. A control circuit, upon receiving a drive power signal, turns ON/OFF the switching element to provide constant current control. A power supply circuit is coupled between the second LED lighting device connection terminal and the negative voltage rail and generates the drive power signal to the control circuit during a detected lighting condition. The power supply circuit further disables the drive power signal during a detected open circuit condition. | 08-25-2011 |
20110248647 | LIGHTING DEVICE AND LIGHT FIXTURE USING LIGHTING DEVICE - A lighting device reliably detects a status (i.e., existence or absence) of a load connection, and enables or disables power output based on the detected load connection status. The device includes a DC-DC converter having input and output terminals, and a DC current conducting element coupled across the output terminals. A load terminal is also coupled across the output terminals and configured to receive an LED unit. A load detection circuit coupled between an input terminal and the load terminal detects the connection status of an LED unit via a DC current passing through the load terminal, and controls a switching operation of the DC-DC converter based on the detected connection status. A diode coupled between the load terminal and the DC current conducting element blocks a DC current path from the input terminals to the load detection circuit through the DC current conducting element. | 10-13-2011 |
20120019714 | LED LIGHTING DEVICE WITH CHOPPER CIRCUIT AND DIMMING CONTROL METHOD - A lighting device is provided for lighting control of an LED module based on an externally provided dimming control signal. A chopper circuit includes a switch coupled across a DC input and an inductor which receives and stores energy when the switch is turned on, and discharges energy to the LED module when the switch is turned off. A control circuit determines a current value to the switch, and compares the current value to a predetermined value. During normal operation, the switch is turned off when the detected current value reaches the predetermined value and turned back on when inductor discharge has completed. During a dimming operation, the normal operation is intermittently disabled in accordance with the dimming control signal. The dimming control signal may be a low-frequency PWM signal, with the lighting output being dimmed as a result of a duty ratio of the PWM signal. | 01-26-2012 |
Patent application number | Description | Published |
20120223651 | ILLUMINATION SYSTEM - An illumination system includes a lighting apparatus having a solid-state light emitting element as a light source; and a dimmer including a bidirectional switching element having a self-sustaining function and connected to a serial circuit of the lighting apparatus and an external power source. The dimmer varies a conduction angle of the bidirectional switching element by controlling a phase of an AC voltage of the external power source, wherein the lighting apparatus performs dimming of the light source based on the conduction angle of the bidirectional switching element, and the dimmer continues to apply driving current to the bidirectional switching element during a first period, which is a part of a second period, the bidirectional switching element being allowed to conduct throughout the second period. | 09-06-2012 |
20120262080 | SOLID STATE LIGHT SOURCE BASED LIGHTING DEVICE AND LIGHTING SYSTEM - A lighting device is capable of realizing a stable dimming control in a wide range of light output. The lighting device includes a DC power circuit for providing power to a switching element of the lighting device. A current controller switches the switching element to enable a current to flow from the DC power circuit through a solid state light source and maintain the current from the DC power circuit through the solid state light source current controller at a predetermined current. The current controller includes a first switching controller operable to change a width of an on-pulse provided to the switching element and a second switching controller operable to determine a burst-on time during which the on-pulses determined by the first switching controller are provided to the switching element. The burst-on time is longer than an on-pulse period of the first switching controller. | 10-18-2012 |
20120262087 | LIGHTING DEVICE FOR SOLID-STATE LIGHT SOURCE AND ILLUMINATION APPARATUS INCLUDING SAME - A lighting device for a solid-state light source includes a DC power source circuit section which flows a current in a solid-state light source by using a charging/discharging current or either one of charging and discharging currents of a inductor connected in series to a switching element, and a current control section having a first switching control unit for changing an ON width of the switching element depending on a dimming level and a second switching control unit for controlling an ON timing of the switching element. The second switching control unit changes a time until the switching element is turned on from a zero-crossing of the discharging current of the inductor such that the time becomes substantially the same when the dimming level is equal to or greater than a predetermined level, and the time becomes longer when the dimming level is less than the predetermined level. | 10-18-2012 |
20120286686 | LIGHTING DEVICE FOR SOLID-STATE LIGHT SOURCE AND ILLUMINATION APPARATUS USING SAME - A lighting device for lighting a solid-state light source includes: a DC power circuit unit for converting a power of an input DC power source using a switching element and flowing a current through a solid-state light source; and a control unit for performing a first switching control in which the switching element is turned on/off at a first high frequency and a second switching control in which an ON/OFF operation of the switching element is intermittently stopped at a second frequency lower than the first frequency of the first switching control. When the current flowing through the solid-state light source is changed, the second frequency is varied. | 11-15-2012 |
20120299512 | DIMMING SIGNAL GENERATION DEVICE AND ILLUMINATION CONTROL SYSTEM USING SAME - A dimming signal generation device outputs a square wave voltage signal having an on-duty corresponding to a dimming level to a dimming signal line from a time point when a predetermined time period has elapsed after power-up. In the dimming signal generation device, a specific voltage is outputted to the dimming signal line for the predetermined time period after the power-up. | 11-29-2012 |
Patent application number | Description | Published |
20080217991 | Hydraulic Transaxle - A transaxle ( | 09-11-2008 |
20080264026 | RIDING LAWNMOWER VEHICLE - A riding lawnmower vehicle includes two main drive wheels, at least one caster wheel, an electric traction motor, an internal combustion engine, a generator driven by the internal combustion engine, and a lawnmower. The electric energy generated by the generator can be supplied directly or via an electric accumulator to the electric traction motor. The main drive wheels are independently driven by the electric traction motor, which can operate as a traction power source. When viewed from one end to the other end in the width direction of the vehicle, the internal combustion engine and a secondary battery operable as the electric accumulator overlap each other, and the main drive wheels overlap at least a part of at least one of the internal combustion engine, the generator, the secondary battery, a fuel cell, a capacitor, an inverter, a cooling device, a mower driving motor, and a grass-collecting duct. | 10-30-2008 |
20090000839 | RIDING LAWN MOWER - A riding lawnmower includes left and right wheels, at least one caster wheel, a lawnmower blade or reel, and a control section. The left and right wheels are independently driven by electric rotary machines to travel. The lawnmower blade or reel is driven for mowing. The control section, in response to turn instruction input by a turn operator, controls the left and right wheels according to preset standard setting conditions, or according to deceleration setting conditions which differ from the standard setting conditions, under which at least one of a vehicle movement speed and vehicle turning speed is decelerated more than under standard setting conditions. The riding lawnmower includes a section designating either standard setting conditions or deceleration setting conditions. In a riding lawnmower, left and right wheels are caused to turn around a turn center position corresponding to a turn instruction according to designated setting conditions. | 01-01-2009 |
20120095636 | CONTROL SYSTEM FOR A LAWNMOWER VEHICLE HAVING A PLURALITY OF ELECTRIC MOTORS - A control system for a lawnmower vehicle having a plurality of electric motors may include at least one controller for controlling operation of the drive wheel electric motor in response to an operation amount of at least one operator. The controller may control operation of a driver for driving a mower-related electric motor to cause the mower-related electric motor to activate or stop. | 04-19-2012 |
20120159916 | CONTROL SYSYTEM FOR MOTOR-DRIVEN LAWNMOWER VEHICLE - A control system for an engineless, motor-driven lawnmower vehicle includes electric motors and controllers. At least one of the electric motors is an electric drive motor connected to a drive wheel of the lawnmower vehicle to enable transmission of motive power. At least one other electric motor is a mower-related electric motor connected to a lawnmower rotary tool to enable transmission of motive power. At least one of the controllers is a drive wheel controller which includes a drive wheel driver and which controls operation of the electric drive motor in response to a signal from at least one operator sensor for detecting an operation amount of at least one operator. At least one controller controls to activate or stop the mower-related electric motor. At least one controller is connected to the drive wheel controller and transmits a control signal thereto in response to a signal from the operator sensor. | 06-28-2012 |
20140059989 | RIDING LAWN MOWER - A riding lawnmower includes left and right wheels, at least one caster wheel, a lawnmower blade or reel, and a control section. The left and right wheels are independently driven by electric rotary machines to travel. The lawnmower blade or reel is driven for mowing. The control section, in response to turn instruction input by a turn operator, controls the left and right wheels according to preset standard setting conditions, or according to deceleration setting conditions which differ from the standard setting conditions, under which at least one of a vehicle movement speed and vehicle turning speed is decelerated more than under standard setting conditions. The riding lawnmower includes a section designating either standard setting conditions or deceleration setting conditions. In a riding lawnmower, left and right wheels are caused to turn around a turn center position corresponding to a turn instruction according to designated setting conditions. | 03-06-2014 |
20160029555 | CONTROL SYSYTEM FOR MOTOR-DRIVEN LAWNMOWER VEHICLE - A control system for an engineless, motor-driven lawnmower vehicle includes electric motors and controllers. At least one of the electric motors is an electric drive motor connected to a drive wheel of the lawnmower vehicle to enable transmission of motive power. At least one other electric motor is a mower-related electric motor connected to a lawnmower rotary tool to enable transmission of motive power. At least one of the controllers is a drive wheel controller which includes a drive wheel driver and which controls operation of the electric drive motor in response to a signal from at least one operator sensor for detecting an operation amount of at least one operator. At least one controller controls to activate or stop the mower-related electric motor. At least one controller is connected to the drive wheel controller and transmits a control signal thereto in response to a signal from the operator sensor. | 02-04-2016 |
Patent application number | Description | Published |
20100037983 | NECK RING SEAL - A filling valve device having a gripper and a container mouth seal, in which vertical movement of the gripper holding an empty beverage container relative to a filling valve causes a filling valve container mouth seal to be brought into contact with a neck ring to form a gas seal and fill a beverage containing carbon dioxide. The cross-sectional shape of the container mouth seal approximates an inwardly facing lip shape. Flexibility is imparted in the vertical direction of the filling valve. The inside of the container mouth seal is brought into contact with the neck ring during beverage filling, and a sealing force is applied to the beverage container and the container mouth seal by the gas pressure applied during filling. | 02-18-2010 |
20100037984 | ASEPTIC FILLING DEVICE FOR CARBONATED BEVERAGES - An aseptic filling device for filling carbonate beverages capable of decreasing the size of the clean booth, facilitating maintenance around the filling valve, and reliably sterilizing the interior of gas piping is provided. The aseptic filling device includes a plurality of filling valves, a fluid rotary joint, a filling fluid tank, a fluid surface level sensor, a fluid flow adjustment valve, a container gripper, a plurality of exhaust conduits, an exhaust conduit on/off valve, a plurality of counter gas conduits, a counter gas conduit on/off valve, a rotary joint, an ascetic gas conduit, a flow meter, and a sterilizing filter, wherein rotary conveyed containers contact at least one of the filling valves and are sealed by a sealing member. Filling is performed under a gas pressure, for example, carbon dioxide gas pressure, and a sterilizing filter for sterilizing the gas is mounted on a gas pipe connecting the rotary joint and the filling fluid tank. | 02-18-2010 |
Patent application number | Description | Published |
20090041098 | CODING DEVICE, PULSE REGENERATING DEVICE, AND COMMUNICATIONS SYSTEM - It is an object of the present invention to provide coding techniques which allow for higher efficiency and easier synchronization with coded data. In order to attain the object, a coding device according to the present invention converts 2-bit informational data into 4-bit coded data according to a predetermined coding rule. According to the coding rule employed in the coding device, one of four possible kinds of bit strings of informational data is converted into alternately a bit string of four bits in which each of values of two successive bits is “1” and a bit string of four bits in which each of values of all bits is “0”. Then, the other kinds of bit strings are converted into bit strings of four bits which differ from one another, in each of which a value of only one bit is “1”. | 02-12-2009 |
20090243873 | ELECTRONIC SHELF LABEL AND ELECTRONIC SHELF LABEL SYSTEM - It is an object of the present invention to provide techniques which allow for lower power consumption of electronic shelf labels. In order to attain the object, electronic shelf labels according to the present invention are located to respectively correspond to products, and each of the electronic shelf labels displays product data of its corresponding product. Each of the electronic shelf labels repeatedly performs “sleep operations” in which predetermined functions are stopped for a predetermined time period, at given time intervals, and the predetermined time period is extended when non-receipt of data continues for a specified time period. | 10-01-2009 |
20100253472 | ELECTRONIC SHELF LABEL SYSTEM - It is an object of the present invention to provide a technique relating to an electronic shelf label system that is capable of suppressing malfunction of an electronic shelf label caused by the increase of internal resistance of a battery. In order to achieve this object, in an electronic shelf label system of the present invention, an electronic shelf label | 10-07-2010 |
Patent application number | Description | Published |
20080203924 | FILAMENT LAMP AND LIGHT IRRADIATION TYPE HEAT TREATMENT APPARATUS - A filament lamp comprising a bulb which has a hermetically sealed portion on at least one end and multiple filament assemblies, each filament assembly comprising a coiled filament and connected leads to supply power to that filament, the filament assemblies being sequentially arranged in the axial direction of the bulb, the leads of each filament assembly being electrically connected to respective multiple conductive parts set in the sealed portions, and power being independently suppliable to each of the filaments. A respective one of the coiled filaments is located in a respective first quadrant formed by intersecting planes that are perpendicular to each other and that are tangent to an outer coil diameter of the respective coiled filament. The leads are positioned in quadrants other than the quadrant in which the coiled filament is located. A light irradiation type heat treatment apparatus uses a plurality of such filament lamps. | 08-28-2008 |
20080298786 | FILAMENT LAMP AND LIGHT IRRADIATION TYPE HEAT TREATMENT DEVICE - To provide a filament lamp and light irradiation type heat treatment device that eliminates device-by-device variation of the irradiation-intensity distribution on the article to be treated, a filament lamp ( | 12-04-2008 |
20090103905 | FILAMENT LAMP AND HEAT TREATMENT DEVICE OF THE LIGHT IRRADIATION TYPE - Filament lamps whose individual filament coils can be set to specific temperatures in filament lamps that are supplied with electric power independently and to provide a heat treatment device of the light irradiation type that uses said lamps. Inside of a light emitting tube of each lamp, which has the hermetically sealed portions at each end, are multiple filament modules which have been made by linking pairs of leads which supply electrical power to both ends of coiled filaments and individual filaments that are placed so that they extend along the axis of the light emitting tube. In the electrically connected filament lamps, whose individual leads are connected to the respective electrically conductive material placed in the hermetically sealed portions, at least one of the individual filaments is made up of a single wire and at least two are made up of bundled wires with the single wire being located between the bundled wires. | 04-23-2009 |
20090121607 | FILAMENT LAMP AND LIGHT IRRADIATION TYPE HEAT TREATMENT DEVICE - A filament lamp and light irradiation type heat treatment device capable of uniformly thermally processing the entirety of an article to be treated has a filament lamp ( | 05-14-2009 |
20100054719 | FILAMENT LAMP AND LIGHT IRRADIATION HEAT TREATMENT DEVICE - A filament lamp has a bulb comprised of a straight light emitting tube from which a pair of flat hermetically sealed portions extend, a plurality of coiled filaments arranged within the light emitting tube, in the tube axis direction a pair of internal leads are connected to ends of the filament by a respective one of a plurality of metal foils that are embedded in the hermetically sealed portions, and external leads are connected to the metal foils. The width of metal foils embedded in the hermetically sealed portions is increased so as not to cause them to melt even when an electric current to be supplied to the filament lamp is increased, the hermetically sealed portions being made wider than the external diameter of the light emitting tube and the width between outer margins of the metal foils in a direction at right angles of the tube axis is greater than the internal diameter of the light emitting tube. | 03-04-2010 |
20100079052 | FILAMENT LAMP - To provide the structure of a filament lamp having a plurality of independent power supply pathways, the structure being capable of preventing the power supply pathways from electrically shorting to each other, a filament lamp formed of a straight-tube shaped luminous part having multiple filaments (F | 04-01-2010 |
Patent application number | Description | Published |
20090047585 | Colored curable composition, color filter and manufacturing method thereof - The present invention provides a compound represented by the following Formula (C1), or a colored curable composition containing a tetraazaporphyrin colorant having at least one group represented by the following Formula (I), and a color filter using the composition and a manufacturing method thereof: | 02-19-2009 |
20090075188 | AZO COMPOUND, CURABLE COMPOSITION, COLOR FILTER, AND METHOD OF PRODUCING THE SAME - This invention provides an azo compound represented by Formula (I), Formula (II), or Formula (III): | 03-19-2009 |
20100055582 | COLORED CURABLE COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING THE SAME, AND DIPYRROMETHENE METAL COMPLEX COMPOUND AND TAUTOMER THEREOF - A colored curable composition is provided which has good developability, has excellent color purity, can be formed into a thin film, and has a high absorption coefficient. The colored curable composition includes at least one of specific dipyrromethene metal complex compounds and tautomers thereof. Also, a colored curable composition suitable for forming a color filter which is used in a liquid crystal display device or a solid-state imaging device, and a color filter using the colored curable composition and a method of producing the same are provided. | 03-04-2010 |
20100230647 | COMPOUND OR ITS TAUTOMER, METAL COMPLEX COMPOUND, COLORED PHOTOSENSITIVE CURING COMPOSITION, COLOR FILTER, AND PRODUCTION - The invention provides a colored photosensitive curing composition useful for color filters in primary colors, including blue, green, and red, having a high molar absorption coefficient and allowing a reduction in film thickness and superior color purity and fastness; the colored photosensitive curing composition including, as its colorant, a dipyrromethene-based metal complex compound or a interconvertible isomer thereof, obtained from a metal or metal compound and a dipyrromethene-based compound represented by Formula (III): | 09-16-2010 |
20120138877 | COMPOUND OR ITS TAUTOMER, METAL COMPLEX COMPOUND, COLORED PHOTOSENSITIVE CURING COMPOSITION, COLOR FILTER, AND PRODUCTION - Provided is a colored photosensitive curing composition useful for color filters in primary colors, including blue, green, and red, having a high molar absorption coefficient and allowing a reduction in film thickness and superior color purity and fastness. A colored photosensitive curing composition, comprising, as its colorant, a dipyrromethene-based metal complex compound obtained from a metal or metal compound and a dipyrromethene-based compound represented by the following Formula (I): | 06-07-2012 |
20120238752 | COMPOUND OR ITS TAUTOMER, METAL COMPLEX COMPOUND, COLORED PHOTOSENSITIVE CURING COMPOSITION, COLOR FILTER, AND PRODUCTION - Provided is a colored photosensitive curing composition useful for color filters in primary colors, including blue, green, and red, having a high molar absorption coefficient and allowing a reduction in film thickness and superior color purity and fastness. | 09-20-2012 |
20120315579 | COLORED CURABLE COMPOSITION, COLOR FILTER AND METHOD OF PRODUCING THE SAME, AND DIPYRROMETHENE METAL COMPLEX COMPOUND AND TAUTOMER THEREOF - A colored curable composition is provided which has good developability, has excellent color purity, can be formed into a thin film, and has a high absorption coefficient. The colored curable composition includes at least one of specific dipyrromethene metal complex compounds and tautomers thereof. Also, a colored curable composition suitable for forming a color filter which is used in a liquid crystal display device or a solid-state imaging device, and a color filter using the colored curable composition and a method of producing the same are provided. | 12-13-2012 |