Patent ID: 8303385

Claim:
A stationary ventilating device, comprising: a base; a plurality of airflow-guiding plates stacked-up and assembled together on the base; a plurality of guiding members each of which is interposed between the plurality of airflow-guiding plates; a covering plate including supporting legs formed on a lower side of the covering plate, the supporting legs vertically erected and installed on an inner circumference of an uppermost airflow-guiding plate of the plurality of airflow-guiding plates so that a ventilating passage is formed on the side having a sloped section of the uppermost airflow-guiding plate, the covering plate further comprising a raised portion located radially inward of the outer circumference of the covering plate; and a fan positioned horizontally to at least one of the plurality of guiding members for compulsory ventilation; wherein the plurality of airflow-guiding plates have the same slope angle, and the slope angle of the sloped section of the covering plate is formed to be smaller than the slope angle of lateral sides of the plurality of airflow-guiding plates; wherein airflows that rise from the plurality of airflow-guiding plates, are converged into an inner space of the covering plate and flow downward and are ventilated through the ventilating passage; and wherein the plurality of airflow-guiding plates have the same height, and a height of the covering plate is smaller than the height of the plurality of airflow-guiding plates.