Packing box structure

Abstract

A packing box includes a first triangular lateral board part, an upper board part, a bottom board part, a covering board part, and a second triangular lateral board part, which includes upper and lower parts; when the packing box is in a spread-out position, it has a first sticking plate lying between the first triangular lateral board part and the bottom board part; the first sticking plate joins the first triangular lateral board part and the bottom board part together, and therefore can prevent the covering board part from being folded along a middle portion when one is folding and erecting the packing box; therefore, folds won't be formed on the covering board part to spoil the appearance.

1 . A packing box structure, comprising
 a first triangular lateral board part; the first triangular lateral board part having a long side, and first and second short sides;   a covering board part adjoining the long side of the first triangular lateral board part; the covering board part having an observation window on a middle portion thereof; the covering board part having a transparent sticker over the observation window thereof;   a first sticking plate adjoining the first short side of the first lateral board part;   an upper board part adjoining the second short side of the first lateral board part; the upper board part having a second sticking plate adjoining thereon, which is used to join the covering board part and the upper board part together;   a bottom board part adjoining a lower end of the upper board part; the bottom board part being joined on the first sticking plate; a gap being formed between one side of the bottom board part and the first sticking plate; the bottom board part having a third sticking plate joined on the covering board part;   a second triangular upper lateral board part adjoining an edge of the upper board part; the second upper lateral board part having a third sticking plate adjoining thereon, which is used to join the covering board part and the second upper lateral board part together;   a second triangular lower lateral board part adjoining an edge of the bottom board part; the second lower lateral board part has a fourth sticking plate adjoining thereon, which is used to join the covering board part and the second lower lateral board part together; and   a fifth sticking plate, which is interposed between and joined on the second upper lateral board part and the second lower lateral board part.   
   
   
       2 . The packing box structure as claimed in  claim 1 , wherein the first sticking plate has a middle fold line, which divides the first sticking plate into an outer plate part and an inner plate part. 
   
   
       3 . The packing box structure as claimed in  claim 1 , wherein the fifth sticking plate has a middle fold line, which divides the fifth sticking plate into an outer plate part and an inner plate part.