Automobile hood link-type active hinge device

An automobile hood link-type active hinge device includes: an arm piece rotatably coupled to an automobile body fixing stand by means of a hood opening side hinge shaft; a pick-up piece rotatably coupled to the arm piece by means of an operating side hinge shaft and having a hood coupled to the top portion thereof; a bushing coupled to coupling holes formed on the arm piece and the pick-up piece to fix or separate the arm piece and the pick-up piece to each other or from each other, the bushing having two or more incised slots formed on the central periphery thereof; a coupling-releasing member having a safety pin coupled to the bushing, the safety pin having a base piece formed thereon and a locking piece formed on one side periphery thereof through punching, a supporting portion coupled to a fixing member around a rotary shaft, and a releasing lever mounted on the upper portion of the supporting portion; and an actuator located under the releasing lever.