Abstract: The light-diffusion LED lamp according to the present patent application includes LED blue light chips and light-guiding column, wherein a substrate of the LED blue light chips is provided with a blocking wall made of reflective heat-conducting materials, chips thereof are provided within the blocking wall, and the upper surface of the substrate within the blocking wall is covered with a transparent heat-conducting layer. The lower portion of the transparent light-guiding column is attached with a cover plate, the bottom surface of which is provided with stepped grooves that match with the LED blue light chips, the side wall of the second stepped groove thereof and the upper surface of the cover plate are provided with a light reflective layer, the top surface of which is covered with a fluorescent layer, and the top portion of the transparent light-guiding column has a reflective structure mounted thereon.

Abstract: The present patent application discloses a LED lamp, including a substrate on which LED assemblies are mounted, the surface of LED assemblies being covered with transparent heat conductor and having blocking wall arranged around; the LED assemblies are further coupled with a transparent lampshade that has a reflective ring provided thereon, the LED assemblies are disposed in a sealed cavity constituted by the substrate and the transparent lampshade, and the phosphor mixture provided on the transparent lampshade is separated from the LED assemblies.

Abstract: The light-diffusion LED lamp according to the present patent application includes LED blue light chips and light-guiding column, wherein a substrate of the LED blue light chips is provided with a blocking wall made of reflective heat-conducting materials, chips thereof are provided within the blocking wall, and the upper surface of the substrate within the blocking wall is covered with a transparent heat-conducting layer. The lower portion of the transparent light-guiding column is attached with a cover plate, the bottom surface of which is provided with stepped grooves that match with the LED blue light chips, the side wall of the second stepped groove thereof and the upper surface of the cover plate are provided with a light reflective layer, the top surface of which is covered with a fluorescent layer, and the top portion of the transparent light-guiding column has a reflective structure mounted thereon.

Abstract: The present patent application discloses an AC LED drive circuit, comprising four rectifier diodes, a current constant diode and k groups of LED units in parallel; four rectifier diodes constitute a full bridge rectifier circuit; inputs of the bridge rectifiers are AC1 and AC2; the outputs of the bridge rectifiers are a circuit including n series connections by k parallel connections and then serially connected with a current constant diode. The present patent application employs four rectifier diodes and a current constant diode to drive the AC LED drive circuit of the LED so as to make the availability of LED up to 100%, thus improving the light efficiency and reducing the cost.

Abstract: The present patent application discloses a U-shaped LED energy saving lamp, comprising a lamp base; a drive shell that has a drive provided therein is arranged on the lamp base, the drive shell being made of heat-conducting plastic embedded with metal or simply made of heat-conducting plastic material; the drive shell is engaged with the U-shaped lampshade, inside of which a substrate electrically connected with the drive is provided, and the substrate has LED assemblies mounted thereon. The LED lamp according to the present patent application not only effectively realizes that the LED lamp irradiates with light in an angle of larger than 330 degree but also evenly irradiates without the problem of glaring, and the heat dispersion performance thereof is excellent.