Heat-dissipating apparatus and illuminator using the same

摘要

Disclosed is a heat-dissipating apparatus and an illuminator using the same. The heat-dissipating apparatus includes a heat sink including one side contacted with a heat generating portion and the other side having heat-dissipating pins arranged at the edge thereof and a space formed inside the heat-dissipating pins; and a driver that is positioned in the space and keeps the heat-dissipating pins cool by sucking outside air and discharging inside air with a pumping operation.

主权项

1. A heat-dissipating apparatus comprising:
a heat sink having one side configured to contact a heat generating portion and another side having a plurality of heat-dissipating pins arranged at the edge thereof, the plurality of heat-dissipating pins defining a space in the heat sink; and a driver positioned in the space, the driver configured to keep the heat-dissipating pins cool by sucking outside air into the driver and discharging inside air out of the driver with a pumping operation, the driver including:
a housing having a wall including a plurality of air flow slots formed therein, the wall defining a through hole such that the housing has a first open end and a second open end;first and second vibrating plate respectively located in the first and second open ends in order to have opposite vibrating phases relative to each other; andan actuator assembly configured to vibrate the first and second vibrating plates such that inside air in the housing is discharged through the plurality of air flow slots and outside air is sucked into the housing through the plurality of air flow slots, the actuator assembly including:
a first actuator configured to vibrate the first vibrating plate; anda second actuator configured to vibrate the second vibrating plate,wherein the first vibrating plate includes first and second guide portions located thereon,the second vibrating plate has third and fourth guide portions located thereon,the housing includes a supporting portion extending from an inner surface of the wall of the housing,the first actuator includes first and second magnets mounted on the inner surface of the wall of the housing and first and second coils arranged opposite the first and second magnets, respectively, the first and second magnets being separated from each other and having upper and lower portions that are different in their polarities, and the first and second coils being wound on the first and second guide portions, respectively, andthe second actuator includes a third magnet fixed to the supporting portion, the third magnet being formed in a shape of a square pillar, and third and fourth coils arranged at two sides around the third magnet, the third and fourth coils being oppositely formed relative to each other and separated from the third magnet.