A louvered canopy, comprising: a vertical column , a frame provided at an upper end of the vertical column , louver blades hinged to the frame and capable of opening and closing, and a control structure capable of controlling opening and closing of the louver blades , the control structure comprises a louver blade directional switching element and a control bar , the control bar being vertically provided and inserted inside the vertical column , the control structure further comprises a manual drive assembly provided on the vertical column , the manual drive assembly comprises a worm gear , a worm wheel , and a worm driven bar , the worm gear being rotationally provided on the vertical column and meshing with the worm wheel , characterized in that the control bar is capable of swinging up and down, the louver blade directional switching element comprises a hinged lever member and a fulcrum member , a first end of the fulcrum member being fixed to a middle part of the hinged lever member , while a second end of the fulcrum member being hinged to the frame , the hinged lever member has an effort end (7a1) and a load end (7a2), the effort end (7a1) being located below the load end (7a2), and the effort end (7a1) and the load end (7a2) being located on opposite sides of the fulcrum member , respectively, the effort end (7a1) is hinged to an upper end of the control bar , the load end (7a2) is connected to the louver blades through a linkage transmission mechanism, the manual drive assembly provided on the vertical column is capable of driving the control bar to swing up and down, a first end of the worm-driven bar is fixed to the worm wheel while a second end of the worm-driven bar is hinged to a lower end of the control bar . a vertical column , a frame provided at an upper end of the vertical column , louver blades hinged to the frame and capable of opening and closing, and a control structure capable of controlling opening and closing of the louver blades , the control structure comprises a louver blade directional switching element and a control bar , the control bar being vertically provided and inserted inside the vertical column , the control structure further comprises a manual drive assembly provided on the vertical column , the manual drive assembly comprises a worm gear , a worm wheel , and a worm driven bar , the worm gear being rotationally provided on the vertical column and meshing with the worm wheel , characterized in that the control bar is capable of swinging up and down, the louver blade directional switching element comprises a hinged lever member and a fulcrum member , a first end of the fulcrum member being fixed to a middle part of the hinged lever member , while a second end of the fulcrum member being hinged to the frame , the hinged lever member has an effort end (7a1) and a load end (7a2), the effort end (7a1) being located below the load end (7a2), and the effort end (7a1) and the load end (7a2) being located on opposite sides of the fulcrum member , respectively, the effort end (7a1) is hinged to an upper end of the control bar , the load end (7a2) is connected to the louver blades through a linkage transmission mechanism, the manual drive assembly provided on the vertical column is capable of driving the control bar to swing up and down, a first end of the worm-driven bar is fixed to the worm wheel while a second end of the worm-driven bar is hinged to a lower end of the control bar . <EOS>