Ventilation device

The utility model provides an air interchanger, which comprises a basket body, an air inlet, an air outlet and an air outlet, the air outlet is formed outside the basket body; the air exchange unit is arranged in the basket body and blows air entering the basket body from the air inlet to the air outlet after passing through the air outlet of the air exchange unit, and the air exhaust path is communicated with the air outlet of the air exchange unit and the air outlet so as to guide the air from the air outlet of the air exchange unit to the air outlet; and the exhaust air path is arranged on the exhaust air path in the basket body and is communicated with the interior of the basket body. The air interchanger can restrain dew dripping or freezing. 本实用新型提供一种换气装置，包括：筐体，形成换气装置的外廓并且包括进风口；出风口，设于筐体的外部；以及换气单元，设于筐体内并且将从进风口进入筐体的内部的空气经过换气单元出风口后向出风口吹送，排风风路，连通换气单元出风口和出风口以将空气从换气单元出风口向出风口引导，以及排水结构，位设于筐体内的排风风路上并且连通排风风路与筐体的内部。该换气装置能够抑制结露水滴落或结冰。