Patent ID: 8882306
Filing Date: 2014-11-11
Classification: F21K,F21V

Abstract:
1. A lighting device comprising: a body provided with a cavity in an upper part; a power supply disposed in the body to supply power; a case disposed in the cavity, the case including an electrode unit detachably connected to the power supply; and a light source disposed in the case and electrically connected to the electrode unit, wherein the case includes a first screw formed at an outside of the case, and the body includes a second screw coupled to the first screw, formed at a side wall to provide the cavity, wherein the electrode unit includes a first case electrode and a second case electrode, wherein a distance between the first case electrode and a circumference of a bottom surface of the case is different from a distance between the second case electrode and the circumference of the bottom surface of the case, and the power supply includes a first power supply electrode and a second power supply electrode corresponding to the first case electrode and the second case electrode, respectively, wherein the first power supply electrode and the second power supply electrode have circular shapes with different diameters.