| 摘要 |
A blind slat (1) has a substantially constant cross-sectional profile extending between a leading end (2) and a trailing end (3). The profile defines an upper face (4) of the slat (1). The upper face (4) has a convex portion (6) extending from adjacent the leading end (2) towards the trailing end (3). The convex portion (6) has an apex (7) at which the upper face (4) is parallel to a reference axis (R) of the profile that extends laterally between the leading end (2) and the trailing end (3). The upper face (4) also has a concave portion (8) located between the convex portion (6) and the trailing end (3). The concave portion (8) has a base (9) at which the upper face (4) is parallel to the reference axis (R). An inflection (10) joins the convex portion (6) and the concave portion (8). The upper face (4) is inclined with respect to the reference axis (R) by at least 11° at the inflection (10). The profile has a depth measured between the leading end (2) and the trailing end (3) of between 105 and 150 mm.
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