Abstract: The present invention provides an LED lighting apparatus having a separate wavelength conversion unit, which comprises the wavelength conversion unit and an LED. The wavelength conversion unit has an optical component and a wavelength conversion layer. The LED may be such positioned that the wavelength conversion layer is excited thereby. By forming the wavelength conversion unit at a surface of the optical component, the process of the LED can be simplified and the yield can be improved. Further, the present invention contributes to extending the application scope of the LED lighting apparatus by separating the wavelength conversion unit from the LED, so as to achieve optically desired light beams with evenness.

Abstract: A lighting device having an electrostatic discharge unit is provided. The lighting device having the electrostatic discharge unit comprises a lighting unit and the electrostatic discharge unit. The lighting unit comprises a first metal shell, wherein the first metal shell comprises a first opening. The electrostatic discharge unit is installed in the first opening. To prevent the user from getting an electric shock due to any static electricity, the static electricity on the user's body portions, such as hands, can be discharged by the electrostatic discharge unit before the user turns the lighting unit on or controls the same. According to the present invention, the electrostatic discharge unit is directly combined on the lighting unit to provide timely use for the user and improve the practicability and the convenience property of the electrostatic discharge unit.

Abstract: The present invention discloses a color-temperature adjustable light-emitting device and a control circuitry thereof. Therein, the light-emitting device comprises a signal control circuit, an isolation circuit, current driving circuits, light-emitting diodes, and a protection circuit. The present invention implements the signal control circuit to control the plurality of current driving circuits to drive the light-emitting diodes, respectively. Since the signal control circuit can simultaneously accurately control the plural light-emitting diodes, a color temperature of mixed light of the light-emitting diodes can be adjusted between 1,500K and 20,000K.