| 摘要 |
<p>The present invention relates to an air curtain and, more specifically, an air curtain built-in door frame which function as an air curtain by discharged air discharged from the door frame, formed by connecting the borders of sides, top, and bottom of the door, in order to hang or insert the door. According to the present invention, the air curtain built-in door frame is installed to resolve the problems of appearance and space and to reduce power consumption by increasing the utilization efficiency of air.</p> |
