Patent application number | Description | Published |
20100270935 | LIGHT-EMITTING DEVICE AND ILLUMINATION APPARATUS - A light-emitting device and an illumination apparatus are disclosed. A plurality of LED elements are connected in series between positive and negative lines, and first bypass capacitor is connected in parallel to the LED elements respectively. Each series circuit of a predetermined number of LED elements is connected in parallel to second bypass capacitors. As a result, with the negative power line set as a grounding point, the AC impedance at connection points of the series circuit of the LED elements against the ground is reduced. Thus, the erroneous lighting or “flicker” of each LED which otherwise might be caused by an external noise is prevented. | 10-28-2010 |
20120127739 | LAMP UNIT AND LIGHTING FIXTURE - According to one embodiment, a lamp unit includes a light-emitting module, a lighting circuit, and a housing. The light-emitting module includes a light emitting portion having a semiconductor light-emitting element. The lighting circuit lights the semiconductor light-emitting element. The housing includes a case opening in the direction of irradiation of light, and a base on a side of the case opposite from the direction of radiation of the light. The lighting circuit is accommodated in the case, and the light-emitting module is mounted on the base at a position closer to the base with respect to the position of the lighting circuit. | 05-24-2012 |
20120127741 | LAMP UNIT AND LIGHTING FIXTURE - According to one embodiment, a lamp unit includes a light-emitting module, a housing, a lighting circuit, and a heat conductive sheet. The light-emitting module includes a light emitting portion having a semiconductor light-emitting element formed thereon. The housing includes a case opening in the direction of irradiation of light, and a base on a side of the case opposite from the direction of irradiation of the light. The light-emitting module is mounted on a surface of the base on the case side. A base surface is formed on an outer surface of the base on the side opposite from the case side, and a depressed portion is formed on the base surface. The lighting circuit is accommodated in the housing. The heat conductive sheet allows resilient deformation, and is disposed in the depressed portion. | 05-24-2012 |
20120262928 | LAMP APPARATUS AND LUMINAIRE - According to one embodiment, a lamp apparatus includes a light-emitting module, housing, and a lighting circuit. The light-emitting module includes a light-emitting element. The housing opens in the direction of irradiation of a light beam and having a cap on a side opposite from the direction of irradiation of the light beam. The cap is provided with a light-emitting module mounting portion projecting in the direction of irradiation of the light beam and the light-emitting module is mounted on the light-emitting module mounting portion. The lighting circuit is accommodated in the housing. | 10-18-2012 |
20120313551 | Lamp Device - According to one embodiment, a lamp device includes a housing including a cap, a light-emitting module arranged in the housing and a lighting circuit. The light-emitting module includes a module board, and a semiconductor light-emitting element mounted on the module board. The lighting circuit includes a circuit board, plural circuit components mounted on the circuit board, and a first thermosensor and a second thermosensor arranged at different positions on the circuit board where a temperature difference occurs at time of lighting. The lighting circuit controls lighting of the semiconductor light-emitting element according to the temperature difference between the first thermosensor and the second thermosensor. | 12-13-2012 |
20130083549 | LED LIGHTING DEVICE AND LED LUMINAIRE - According to one embodiment, the device main body includes a main body portion, a protruding portion, and a heat conducting portion. The main body portion has an opening on one end side and has a wall portion on the other end side that is opposite to the opening side. The protruding portion protrudes from the wall portion and an inside thereof continues into the main body portion. The heat conducting portion has one end side thereof protruding from the wall portion toward the opening and has the other end side thereof connected to the protruding portion in a way that enables heat conduction. The light emitting unit is connected to the one end side of the heat conducting portion in a way that enables heat conduction. The lighting unit is housed inside the device main body and a portion of the lighting circuit component is arranged inside the protruding portion. | 04-04-2013 |
20130106306 | Lamp Unit and Luminaire | 05-02-2013 |
20130106311 | Power Supply Device and Lighting Device | 05-02-2013 |
20130310997 | Power Supply Device, Luminaire, and Control Method for the Power Supply Device - According to one embodiment, a first control section controls a power supply voltage converting circuit and, if an abnormality detecting section detects an abnormality of a load, controls an output of the power supply voltage converting circuit to be stopped or reduced. A second control section gives a command to the first control section and, if the abnormality detecting section detects the abnormality of the load, controls the first control section to stop or reduce the output of the power supply voltage converting circuit. | 11-21-2013 |
20140153250 | Lamp and Luminaire - According to an embodiment, a lamp main body, a lighting device, a reflecting member and a light-emitting module are provided. The lamp main body includes a case and a cap member attached to the case. The case includes an opening at one end and a hole in the other end center. The cap member integrally includes a projection insertable into the hole. The lighting device and the reflecting member are housed in the case. The lighting device includes a circuit board. The reflecting member configured to reflect light to the outside of the lamp main body includes a reflecting cylinder section including a small-diameter opening and a large-diameter opening. The diameter of the cylinder section expands further toward the large-diameter opening side. The light-emitting module is arranged on the projection to be capable of transmitting heat to the projection. | 06-05-2014 |
20140169004 | Lamp Device and Luminaire - A lamp device includes a semiconductor light-emitting element. The lamp device includes a housing including a heat conductive part, and the heat conductive part is thermally connected to an external thermal radiator. Heat generated by the semiconductor light-emitting element is conducted to the thermal radiator through the heat conductive part. A thermosensor is thermally connected to the heat conductive part. The lamp device includes a lighting circuit to light the semiconductor light-emitting element, and the lighting circuit controls an output of the semiconductor light-emitting element according to detection of the thermosensor. | 06-19-2014 |