A self-propelled earth working machine , such as for example a road milling machine , surface miner or stabilizer, comprising: - a traveling gear , by which the earth working machine stands on a subsurface (U) in rollable fashion, and - a machine frame supported by the traveling gear , - a power source accommodated on the machine frame for providing power, which is usable for a travel operation and/or for an earth working operation of the earth working machine , - a working apparatus for earth working accommodated on the machine frame , - a cooling device for cooling at least one functional device of the earth working machine , the cooling device comprising: - at least one heat exchanger system , comprising at least one heat exchanger , which is designed to transfer heat from a cooling medium to air, and - a ventilator system , which is on the one hand designed and situated to produce a cooling air flow (KL) passing the heat exchanger system and which is on the other hand designed and situated to produce in the area of the power source a ventilation air flow (LL) flowing away from the power source , wherein the heat exchanger system and a ventilation volume , in which the ventilation air flow (LL) flows away from the power source , are situated on the suction side of the ventilator system , characterized in that the ventilation volume is situated downstream of the heat exchanger system relative to the cooling air flow (KL), so that the ventilation air flow (LL) generated by the ventilator system meets the cooling air flow (KL) downstream of the heat exchanger system and upstream of the ventilator system . - a traveling gear , by which the earth working machine stands on a subsurface (U) in rollable fashion, and - a machine frame supported by the traveling gear , - a power source accommodated on the machine frame for providing power, which is usable for a travel operation and/or for an earth working operation of the earth working machine , - a working apparatus for earth working accommodated on the machine frame , - a cooling device for cooling at least one functional device of the earth working machine , the cooling device comprising: - at least one heat exchanger system , comprising at least one heat exchanger , which is designed to transfer heat from a cooling medium to air, and - a ventilator system , which is on the one hand designed and situated to produce a cooling air flow (KL) passing the heat exchanger system and which is on the other hand designed and situated to produce in the area of the power source a ventilation air flow (LL) flowing away from the power source , - at least one heat exchanger system , comprising at least one heat exchanger , which is designed to transfer heat from a cooling medium to air, and - a ventilator system , which is on the one hand designed and situated to produce a cooling air flow (KL) passing the heat exchanger system and which is on the other hand designed and situated to produce in the area of the power source a ventilation air flow (LL) flowing away from the power source , wherein the heat exchanger system and a ventilation volume , in which the ventilation air flow (LL) flows away from the power source , are situated on the suction side of the ventilator system , characterized in that the ventilation volume is situated downstream of the heat exchanger system relative to the cooling air flow (KL), so that the ventilation air flow (LL) generated by the ventilator system meets the cooling air flow (KL) downstream of the heat exchanger system and upstream of the ventilator system . <EOS>