Patent ID: 8500314
Filing Date: 2013-08-06
Classification: F21V,Y10T

Abstract:
1. A combination of a bulb holder and a locking apparatus therefor, the locking apparatus comprising: a fixing mount; a spring; and a ratchet mechanism comprising a ratchet bar having a plurality of ratchets, a pawl, and a movable cam having a curved contour; wherein: said bulb holder is flexibly connected to said fixing mount; one end of said spring is connected to said fixing mount and the other end of said spring is connected to said bulb holder, so as to force said bulb holder to move downwards; said ratchet bar is connected to said bulb holder; said pawl is connected to said fixing mount and elastically contacted with said ratchet bar; said movable cam is slidingly connected to said ratchet bar and elastically contacted with said pawl; and said curved contour comprises a plurality of crests engaged with said pawl.