Abstract

An improved roll-up type Venetian blind is made up of an upper bracket and a plurality of roll-up slats. The upper bracket has a C-shaped receiving groove opened up downward and has a pair of cord passage holes at the left end and the right end respectively thereof. An adjustment unit is disposed on a front side wall of the left end of the upper bracket. Each roll-up slat is made up of a pair of flexible hook connectors that are reversely and integrally bound together to form a hollow chamber therebetween for ventilation. A number of partition plates are horizontally placed in the hollow chamber. Each hook connector has an upper pivot hook end and a lower pivot hook end. The upper pivot hook end is smaller than the receiving groove but is larger than the opening of the receiving groove whereby the assembly of the Venetian blind becomes ready and fast, saving time and labor in one aspect and the dissipation of heat of the Venetian blind is greatly advanced in another aspect.