710 results about "Thermal dissipation" patented technology

A thermal dissipation assembly and method, and a cooled multi-drawer electronics rack are provided having a first cooling loop and a second cooling loop. The first cooling loop is disposed substantially within an electronics drawer and positioned to extract heat from an electronics module within the drawer. The first cooling loop further includes a first planar heat transfer surface. The second cooling loop is disposed substantially external to the electronics drawer and includes a second planar heat transfer surface. A biasing mechanism mechanically forces the first planar heat transfer surface and the second heat transfer surface coplanar when the electronics drawer is in a docked position in the electronics rack to facilitate the transfer of heat from the first cooling loop to the second cooling loop.

A thermally conductive interface, which may be in the form of a double-sided, pressure sensitive adhesive tape, disposable intermediate a heat-generating source having a first heat transfer surface formed of a first material having a low surface energy, and a thermal dissipation member having a second heat transfer surface which is formed of a second material having a surface energy substantially higher than the surface energy of the first material, and which is disposable opposite the first heat transfer surface of the heat-generating source in a spaced-apart, heat transfer adjacency therewith. The interface includes a first pressure sensitive adhesive (PSA) surface which is bondable under pressure to at least a portion of the first heat transfer surface of the heat-generating source, and an opposing second pressure sensitive adhesive (PSA) surface bondable under pressure to at least a portion of the second heat transfer surface of the heat-generating source. The first PSA surface is presented from a layer of a thermally-conductive, first pressure sensitive adhesive composition, preferably silicone-based, having an affinity to the first heat transfer surface of the heat generating source. In turn, the second PSA surface is presented from a layer of a second pressure sensitive adhesive composition, preferably acrylic-based, different from the first composition and having an affinity to the second heat transfer surface of the thermal dissipation member. The interface is particularly adapted for bonding a plastic packaged electronic component to a metal heat sink.

A device is disclosed for producing light that may include one or more printed circuit boards (PCBs), an electronics package may be disposed about the first surface of one or more of the PCBs and a housing. The PCBs may include a metal layer and a core, and, in some aspects, may include multiple cores interposed between multiple metal layers, and in some embodiments a backplane may be disposed along the core(s). A plurality of PCB's may be set apart and connected by pins to dissipate heat from one PCB to another, and / or to convey electrical connectivity. Pins may be configured to pass through or into one or both the PCBs including the cores to conduct heat generated by the electronics package away for dispersion. In some embodiments, the pins may pass into the backplane. The PCBs may include LEDs, lights, computer devices, memories, telecommunications devices, or combinations of these. The device may also include a housing to contain the plurality of PCBs such that air flow may enter the housing and pass by the pins for cooling of the PCBs and electronics thereof. The housing may also be configured to permit external power to be applied to the PCBs within the apparatus.

A light emitting device has: a light emitting element; a lead that is electrically connected to the light emitting element at its one end and serves as a terminal to supply a power source to the light emitting element; a metal base that the light emitting element is mounted thereon and radiates heat of the light emitting element; and a sealing member that is of transparent resin or glass and covers the light emitting element. The lead is secured to the metal base by a heat-resisting insulating member with a thermal expansion coefficient nearly equal to that of the metal base.

Heat dissipation and electromagnetic interference (EMI) shielding for an electronic device having an enclosure. An interior surface of the enclosure is covered with a conformal metallic layer which, as disposed in thermal adjacency with one or more heat-generating electronic components or other sources contained within the enclosure, may provide both thermal dissipation and EMI shielding for the device. The layer may be sprayed onto the interior surface in a molten state and solidified to form a self-adherent coating.

A light-emitting unit includes a housing, a heat sink member having surfaces outside of the housing, a light-emitting diode attached to the heat sink member, and a molding member formed on the housing.

A method for improving thermal dissipation in large gallium nitride light emitting diodes includes replacing sapphire with a better thermal conductor resulting in more efficient removal of thermal energy. A method for achieving a reliable and strong temporary bond between a GaN epitaxial layer and a support wafer. A method for transferring an epitaxial film from a growth substrate to a secondary substrate. An excimer laser initiates film delamination from the growth substrate. The laser beam is shaped by a shadow mask and aligned to an existing pattern in the growth substrate. A method for fabricating a LED that radiates white spectrum light. A phosphor that radiates a white spectrum after excitation in the blue or UV spectrum onto the GaN epitaxial wafer prior to die separation and packaging. A method for depositing a metal substrate onto a GaN epitaxy layer.

Lighting apparatus and methods employing LED light sources are described. The LED light sources are integrated with other components in the form of a luminaire or other general purpose lighting structure. Some of the lighting structures are formed as Parabolic Aluminum Reflector (PAR) luminaires, allowing them to be inserted into conventional sockets. The lighting structures display beneficial operating characteristics, such as efficient operation, high thermal dissipation, high output, and good color mixing.