Air curtain device and method for manufacturing the same

An air curtain device comprising:

• a frame including
• two side wall bodies that are spaced apart from each other,
• two end wall bodies that interconnect said side wall bodies, and that cooperate with said side wall bodies to define an inner space thereamong, upper edges of said side wall bodies and said end wall bodies cooperatively forming a first connecting section, lower edges of said side wall bodies and said end wall bodies cooperatively forming a second connecting section, said first connecting section and said second connecting section respectively defining an upper opening and a lower opening through which said inner space communicates with the external environment, wherein said frame is formed by abase frame member that has a base protruding part surrounding said inner space and protruding upwardly and a plurality of plate members each of which is indented with a base-connecting recess, is located over said base frame member, and is coupled to said base protruding part by said base-connecting recess thereof, wherein said base frame member and said plate members cooperatively define said side wall bodies and said end wall bodies;
• an air-permeable plate abutting against a surface of said second connecting section of said frame that faces said inner space and closing said lower opening, said air-permeable plate having a plurality of pores to thereby be air permeable;
• a cover sealingly connected to said first connecting section of said frame to thereby close said upper opening of said frame, one of said frame and said cover being formed with at least one inlet opening through which said inner space of said frame communicates with the external environment;
• a first adhesive applied to a gap between said air-permeable plate and said second connecting section of said frame, to a junction between said base frame member and each of said plate members, and to a junction between any adjacent ones of said plate members;
• and
• at least one gas fitting connected to said at least one inlet opening of the one of said frame and said cover.