| 摘要 |
<p>The present invention relates to a box of an automatic control panel having a natural wind cooling structure, wherein the box of the automatic control panel has a roof portion and an apparatus storing portion, a natural wind passage space communicating with an inner space of the apparatus storing portion is made in the roof portion, an outlet and inlet through which natural wind passes are made on front and rear lower faces of the roof portion further protruding outward from the box than the front and rear erection walls of the four standing wall portions of the roof portion fixed to the upper ends of four standing wall portions of the apparatus storing portion, ventilation openings are formed in the four standing wall portions of the roof portion, a rainwater invasion preventing louver inclined downward from its upside is provided on the ventilation openings to prevent rainwater from entering the inner space of the box through the ventilation openings, an inner plate consisting of a flat plate and an outer plate of the flat plate in four standing wall portions of the apparatus storing portion are disposed such that the inner plate further protrudes downward with respect to the outer plate and the outer plate further protrudes upward with respect to the inner plate in layers and fixed by riveting or the like, a through-hole through which outer air passes is formed at the lower portion of the inner plate, and a filter is interposed in the through-hole to prevent foreign substances contained in the outer air from entering into the box.</p> |
