| 摘要 |
An improved hand-worn signaling device is disclosed that comprises at least one light-emitting assembly on the palmar side of the hand and at least one light-emitting assembly on the dorsal side of the hand; in one embodiment of the invention, the palmar light-emitting assembly is red and the dorsal light-emitting assembly is green. One embodiment of the device also comprises a controller that detects hand motions by the user and activates the appropriate light-emitting assembly in response. In another embodiment, the controller detects the angle of the user's wrist or knuckles, and activates the appropriate light-emitting assembly depending on the angle of the user's joints. In another embodiment, the controller detects the spatial orientation of the user's hand, and activates the appropriate light-emitting assembly depending on whether the user's hand is positioned vertically with the fingers pointing straight up (the "stop" position) or in any other orientation. An interlock switch that prevents inadvertent activation, and a feedback device that enables the user to tell which light-emitting assembly is on, are also disclosed.
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