LED lighting device

A light-emitting diode (LED) lighting device, comprising:

• a power supplier;
• a light cover;
• and
• a circuit board disposed in the light cover, and having a protective layer disposed thereon and a plurality of light sources, wherein the circuit board has a front soldering section, a rear soldering section and a circuit section, wherein the front soldering section is electrically connected to the rear soldering section via the circuit section, and the front soldering section and the rear soldering section are electrically connected to the power supplier, wherein the light sources are disposed on the circuit section and electrically connected to the circuit section, wherein the circuit board comprises a left-wing portion, a right-wing portion, and a flat portion disposed therebetween, the left-wing portion and the right-wing portion respectively extend from two sides of the flat portion, and are not parallel to the flat portion, whereby the circuit board is bent;
• wherein the protective layer comprises an opening and two coated layers, and the opening comprises a front section, a rear section and a connecting section, wherein the front section is connected to the rear section via the connecting section, and the coated layers are disposed on two sides of the connecting section respectively, and the light sources are within the connecting section to serve as a light-emitting zone, wherein the light-emitting zone makes an inner space of the light cover forms an optical zone, whereby the optical zone simultaneously covers the light-emitting zone, the front soldering section and the rear soldering section.