| 摘要 |
A body support assembly (508) comprising a first layer (e.g., a visco-elastic foam) having a lower surface (134, 140, 150, 234, 240, 250), and a second layer supporting the first layer and having an upper surface (132, 138, 148, 232, 238, 248). One of the upper and lower surfaces (132,232) is defined by a non-planar surface to define a plurality of passages (142, 152, 154, 242). A fan (118, 18, 218, 318, 518) is positioned to move air through the passages (142, 152, 154, 242). Preferably, the non-planar surface comprises a plurality of protrusions (144, 154, 244) (e.g., a convoluted surface). The body support (10, 110, 210, 310, 410, 510) can further comprise a sensor (126, 226, 26, 526) that detects a parameter and produces a signal, and a controller (128, 228, 28, 528) coupled to the sensor (126, 226, 26, 526) and programmed to control the fan (118, 18, 218, 318, 518). Multiple fans (118, 18, 218, 318, 518) and sensors (126, 226, 26, 526) can be provided, and the controller (128, 228, 28, 528) can control the fans (118, 18, 218, 318, 518) to provide different air flows through different locations of the body support assembly (508). A user interface (129, 229, 29, 529) can be coupled to the controller (128, 228, 28, 528) to allow selection of a desired parameter of the body support assembly (508). |
