A carrier frame (104), for installation on a circuit board (2), is implemented in the manner of an oil-drilling rig and comprises a platform (117) that is equipped with supporting legs (105, 106, 107, 108) for mounting on the circuit board (2). The carrier frame has, at the center of its platform (117), a depression (121, 123) that is implemented for installation of a fan (3) at a distance from the circuit board (2), the outer wall (123) of the depression (121, 123) forming part of the fan.