固定式木百叶,作为一种简单、实用且效果较好的通风形式,被广泛用于民用建筑洗手间和公厕。固定叶片的倾斜方向是“内高外低”,既有利于通风,又可以防止雨水溅入。但目前民用建筑洗手间内已普遍采用排风扇,不再依靠通风道自然吸力排气;并且传统叶片不能满足洗手间和公厕的私密性需要;同时传统叶片制作和安装的单向性(图1)存在着缺陷,现阶段由于大多数住宅、公寓内浴室与厕所合二 Fixed wooden blinds, as a simple, practical and effective ventilation form, are widely used in residential toilets and public toilets. Fixed blade tilt direction is “high inside and outside low,” which is conducive to ventilation, but also to prevent rain splashing. However, at present, exhaust fans are widely used in toilets of civil buildings and no longer rely on the natural suction of exhaust air vents. Conventional blades can not meet the privacy requirements of toilets and public toilets. Meanwhile, there is a problem of unidirectional (Figure 1) Defects, at this stage due to the majority of residential, apartment bathroom and toilet in two