Window blind

A window blind comprising:

• a winding roller mounted at an upper edge of a window and rollable about an axis in a longitudinal direction;
• a roll-up piece which has an upper end portion connected to said winding roller, and a lower end portion opposite to said upper end portion in a first direction transverse to the longitudinal direction, and which is disposed to be wound around said winding roller to lift or lower said lower end portion;
• a blind curtain which has a top end portion mounted at the upper edge of the window and spaced apart from said upper end portion in a second direction transverse to both the first transverse direction and the longitudinal direction, and a back major surface that confronts said roll-up piece, and that extends in the longitudinal direction to terminates at left and right lateral ends;
• a plurality of elongate loop members attached to said back major surface, and each defining a lengthwise hole that is oriented in the longitudinal direction, each of said elongate loop members having an anchoring head portion which extends in the longitudinal direction to terminate at left and right edges proximate to said left and right lateral ends, respectively, said anchoring head portion having an access slot in spatial communication with said lengthwise hole and extending in the longitudinal direction, a marginal region interposed between said left edge and said access slot, and a gripped region extending from said access slot towards said right edge;
• and
• a plurality of modular clip devices, each including
• a grip body having a major gripping wall which extends in the longitudinal direction to terminate at leading and trailing sides, and which has loop-side and roll-up piece-side gaps that respectively extend through said leading side towards said trailing side to form a middle gripping finger portion, and internal and external gripping finger portions which flank said middle gripping finger portion, said loop-side and roll-up piece-side gaps being dimensioned such that, when said internal gripping finger portion which is placed in said lengthwise hole by virtue of inserting therein said leading side thereof through said access slot, is shifted in the longitudinal direction, in cooperation with said middle gripping finger portion, said internal gripping finger portion is in a linearly-displaceable snug engagement with said gripped region, and such that said roller-up piece is linearly displaceable and snugly engageable in said roll-up piece-side gap;
• and
• a holding tongue which is disposed to extend from said trailing side of said internal gripping finger portion and which is brought to abut against said marginal region so as to ensure immobility of said internal gripping finger portion in said lengthwise hole.