US Patent 9546851 Lighted arrow nock

A lighted arrow nock capable of easily turning on or off a light, and being easily connected to an arrow shaft includes a light emitting unit including a light and a battery and turning on or off the light by moving the light toward the battery or away from the battery; an arrow adaptor which includes a cylindrical structure so that an outer surface is inserted into a rear end of an arrow, in which the battery is inserted into an inner space of the arrow adaptor; and a light operator which is inserted in an upper portion of the arrow adaptor, while a lower portion of the light operator receives the light, and is moved up and down to turn on or off the light in a state in which the light operator is inserted in the arrow adaptor.