| 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 |
| 20110057576 | POWER SUPPLY DEVICE AND LIGHTING EQUIPMENT - In a power supply device according to one embodiment, a reference signal Vref | 03-10-2011 |
| 20110057577 | POWER SUPPLY DEVICE AND LIGHTING EQUIPMENT PROVIDED WITH POWER SUPPLY DEVICE - A power supply device according to one embodiment is configured to control a lighting of semiconductor light-emitting elements, wherein a dimming signal is canceled during a predetermined time period (T) from a timing immediately after power-ON, so as to light on light-emitting diodes to have a predetermined light amount, for example, a minimum light amount. After an elapse of the predetermined time period (T), cancellation of the dimming signal is released to light on the light-emitting diodes to have a light amount instructed by the dimming signal. | 03-10-2011 |
| Patent application number | Description | Published |
|---|
| 20090067172 | LIGHTING APPARATUS - A lighting apparatus comprises a housing, a light source comprising a plurality of semiconductor light emitting devices, and allocated in the housing so as that the semiconductor light emitting devices are directed downward, a first reflector, which is mounted beneath the light source and formed in a convex body gradually thinning down toward upward, comprising a plurality of segmental reflectors having on its top a installation hole for arranging the semiconductor light emitting device and on its bottom opened wider than the installation hole, and a second reflector allocated beneath the first reflector, wherein the height of the second reflector is defined to secure that a first light shielding angle specified by a straight line passing through the semiconductor light emitting device and the bottom edge of the segmental reflector of the first reflector is larger than a second light shielding angle specified by a straight line passing through the bottom edge of the segmental reflector of the first reflector and the bottom edge of the second reflector. | 03-12-2009 |
| 20100195327 | LIGHTING APPARATUS - A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector. | 08-05-2010 |
| 20100195328 | LIGHTING APPARATUS - A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector. | 08-05-2010 |
| 20100195329 | LIGHTING APPARATUS - A lighting apparatus comprises a housing and a first reflector. The first reflector is mounted beneath the light source and includes a plurality of segmented reflectors, each having at its top, a installation hole and at its bottom, an opening wider than the installation hole. A second reflector is positioned beneath the first reflector. The height of the second reflector causes a first light shielding angle defined by a straight line passing through the installation hole and the bottom edge of the corresponding segmented reflector to be larger than a second light shielding angle defined by a straight line passing through the bottom edge of the segmented reflector and the bottom edge of the second reflector. | 08-05-2010 |
