Abstract:
The present disclosure involves a lighting apparatus. The lighting apparatus includes a photonic device that generates light. The lighting apparatus includes a printed circuit board (PCB) on which the photonic device is located. The lighting apparatus includes a diffuser cap having a curved profile covering the PCB and the photonic device. The diffuser cap has a textured surface for scattering light generated by the photonic device. The lighting apparatus includes a thermally conductive cup that surrounds the diffuser cap and thermal conductively coupled to the PCB. The cup has a reflective inner surface that reflects light transmitting through the diffuser cap. The lighting apparatus includes a heat dissipation structure for dissipating heat generated by the photonic device. The heat dissipation structure is thermally coupled to the cup.
Abstract:
The present disclosure provides an illumination device. The illumination device includes a cap structure. The cap structure is partially coated with a reflective material operable to reflect light. The illumination device includes one or more lighting-emitting devices disposed within the cap structure. The light-emitting devices may be light-emitting diode (LED) chips. The illumination device also includes a thermal dissipation structure. The thermal dissipation structure is coupled to the cap structure in a first direction. The thermal dissipation structure and the cap structure have a coupling interface. The coupling interface extends in a second direction substantially perpendicular to the first direction. The thermal dissipation structure has a portion that intersects the coupling interface at an angle. The angle is in a range from about 60 degrees to about 90 degrees according to some embodiments.
Abstract:
The present disclosure involves a lighting apparatus. The lighting apparatus includes a photonic device that generates light. The lighting apparatus includes a printed circuit board (PCB) on which the photonic device is located. The lighting apparatus includes a diffuser cap having a curved profile covering the PCB and the photonic device. The diffuser cap has a textured surface for scattering light generated by the photonic device. The lighting apparatus includes a thermally conductive cup that surrounds the diffuser cap and thermal conductively coupled to the PCB. The cup has a reflective inner surface that reflects light transmitting through the diffuser cap. The lighting apparatus includes a heat dissipation structure for dissipating heat generated by the photonic device. The heat dissipation structure is thermally coupled to the cup.
Abstract:
A semiconductor structure includes a module with a plurality of die regions, a plurality of light-emitting devices disposed upon the substrate so that each of the die regions includes one of the light-emitting devices, and a lens board over the module and adhered to the substrate with glue. The lens board includes a plurality of microlenses each corresponding to one of the die regions, and at each one of the die regions the glue provides an air-tight encapsulation of one of the light-emitting devices by a respective one of the microlenses. Further, phosphor is included as a part of the lens board.
Abstract:
The present disclosure relates to methods for fabricating electrical connectors of a waterproof connector-heat sink assembly of a LED light bar module using injection molding. The methods include matching the coefficient of thermal expansion (CTE) of injection molding materials for the connectors and heat sinks. A heat sink and conductor pins are inserted into an injection mold and the injection molding materials are injected into the injection mold. An integrated connector-heat sink assembly is formed when the injection molding materials of the connectors form a waterproof seal with the heat sink when the injection molding materials solidify. Placement of the heat sink and conductor pins inside the injection mold is controlled to ensure that adhesive bonding between the injection molding materials and the heat sink is stronger than a maximum shear force.
Abstract:
The present disclosure provides one embodiment of an illumination structure. The illumination structure includes a light-emitting diode (LED) device on a substrate; a lens secured on the substrate and over the LED device; and a diffuser cap secured on the substrate and covering the lens, wherein the lens and diffuser cap are designed and configured to redistribute emitting light from the LED device for wide angle illumination.
Abstract:
The present disclosure involves an LED illumination apparatus. The illumination apparatus includes a substrate and a plurality of LED modules disposed over the substrate according to a predefined layout pattern. The layout pattern includes a row having a vertically-aligned LED module located laterally adjacent to a first horizontally-aligned LED module and a second horizontally-aligned LED module. The layout pattern also includes a column having a horizontally-aligned LED module located laterally adjacent to a first vertically-aligned LED module and a second vertically-aligned LED module. The layout pattern further includes a row of horizontally-aligned LED modules located laterally adjacent to one another. The illumination apparatus also includes a diffuser disposed over the plurality of LED modules. Each LED module also includes a secondary optical component providing an asymmetric light pattern. The plurality of LED modules provides a linear light distribution or a planar light distribution on the diffuser.
Abstract:
The present disclosure discloses an apparatus for thermally protecting an LED device. The apparatus includes a substrate. The apparatus includes a plurality of light-emitting devices disposed over the substrate. A selected one of the plurality of light-emitting devices is at least partially surrounded by the rest of the plurality of light-emitting devices. The apparatus includes a feedback mechanism electrically coupled to the selected light-emitting device. The feedback mechanism is operable to detect a change in a temperature of the selected light-emitting device. The feedback mechanism is also operable to adjust an electrical current through at least the selected light-emitting device in response to the detected change in the temperature.
Abstract:
The present disclosure relates to methods for fabricating electrical connectors of a waterproof connector-heat sink assembly of a LED light bar module using injection molding. The methods include matching the coefficient of thermal expansion (CTE) of injection molding materials for the connectors and heat sinks. A heat sink and conductor pins are inserted into an injection mold and the injection molding materials are injected into the injection mold. An integrated connector-heat sink assembly is formed when the injection molding materials of the connectors form a waterproof seal with the heat sink when the injection molding materials solidify. Placement of the heat sink and conductor pins inside the injection mold is controlled to ensure that adhesive bonding between the injection molding materials and the heat sink is stronger than a maximum shear force.
Abstract:
The present disclosure discloses an apparatus for thermally protecting an LED device. The apparatus includes a substrate. The apparatus includes a plurality of light-emitting devices disposed over the substrate. A selected one of the plurality of light-emitting devices is at least partially surrounded by the rest of the plurality of light-emitting devices. The apparatus includes a feedback mechanism electrically coupled to the selected light-emitting device. The feedback mechanism is operable to detect a change in a temperature of the selected light-emitting device. The feedback mechanism is also operable to adjust an electrical current through at least the selected light-emitting device in response to the detected change in the temperature.