| 摘要 |
The heat sink is made particularly of aluminium alloy with cooling fins, 10 cm long, protruding from grooves (14) in the base (12) of its housing. Each fin has two parallel limbs (22) of thickness (n) 1.8 mm and a root (26) of length 4.5 mm which is slightly greater than the depth (h) of the groove. Security of the fins in the grooves is aided by corrugations (42,44) in the vertical walls of each groove. Between each groove and its neighbour a notch (18) is cut out of the base for a wedge-shaped tool to apply sideways pressure across the corrugations. |
