| 摘要 |
A heat sink and cooler for a portable radio transmitter comprises an aluminium casing 5 whose interior is split up into water compartments 18, 20, 22 and 24, in communication with each other, and an air compartment 26 which is sealed from the water compartments. The electrical or electronic components 6 are mounted on the outside of the casing 5 and they and the casing are mounted inside a thermally insulated outer case 32. Heat produced by the components 6 is dissipated in the water. The water is cooled by passing air through the compartment 26. The air flow may be switched on intermittently, for example when the transmitter is not operating, so as to remove heat previously stored in the water during a cycle of operation of the transmitter. Instead, the air flow can be on continuously while the transmitter is operating. <IMAGE> |
