Patent ID: 8439522

Claim:
An angle-adjusting LED lighting apparatus comprising: an LED light source on which light emitting diodes (LEDs) and a printed circuit board electrically connected to the LEDs are mounted, wherein the LED light source comprises a lens configured to diffuse light illuminated from the LEDs, and a case configured to house the LED light source and the lens, at least one portion of the outer surface of the case is circular-shaped, an uneven part is formed at the circular-shaped outer surface of the case, an engaging groove is formed inside the uneven part and penetrates the case along the length of the case; an angle-adjustment member comprising an uneven surface engaging with the uneven part on one surface; and an engagement fixing member configured to engage with an outer fixing member on which the lighting apparatus is to be mounted using an engaging member penetrating the angle-adjustment member and inserted into the engaging groove.