Wrist worn indicator light for a cyclist and activated by a tilt switch

摘要: An indicator device for cyclists has a wristband ('a' figure 2) carrying number of LED lights (e-j, or 'b') which can be flashed by circuit (a) when tilt switch (d) operates due to the cyclist making hand signal extending arm outwards horizontally. The main on/off (c) and battery (b) power source. may comprise : mercury switch; movable magnetic element reed switch/hall sensor (figures 6, 7); ball contact (figure 5); weighted mechanical 8, 9); optical 10).