Abstract: A reflective illumination structure is provided. It includes a heat dissipation base, a lighting unit disposed at a top of the heat dissipation base, and a reflective lampshade enclosing the lighting unit. An inner wall of the reflective lampshade is provided with a specular reflection arc surface disposed at a bottom end of the inner wall of the reflective lampshade and a diffuse reflection arc surface disposed at a top end of the inner wall of the reflective lampshade. A part of light emitted from the lighting unit is directly emitted to the diffuse reflection arc surface, and another part of the light is reflected by the specular reflection arc surface and then is emitted to the diffuse reflection arc surface. The light reflected by the diffuse reflection arc surface is emitted through a bottom of the reflective lampshade and forms a uniform rectangular light spot.

Abstract: An LED UV sterilization device, including a lens assembly and a light source assembly; the lens assembly includes a plurality of lenses of different materials suitable for light of different wavelengths; the light source assembly includes a visible light source assembly and an ultraviolet light source assembly. Visible light irradiated by the visible light source assembly and invisible ultraviolet light irradiated by the ultraviolet light source assembly pass through lenses of corresponding materials and form an overlapped light spot, so that an irradiation location of the invisible ultraviolet light is indicated by the visible light. The LED UV sterilization device not only realizes safe disinfection and sterilization, but also visualizes the sterilization process. The sterilization process is safer and more reliable, and the sterilization area is more accurate.

Abstract: An LED driving circuit and an LED lamp are provided. The driving circuit comprises a power input unit coupled to an input voltage; a voltage conversion unit coupled to the power input unit and converting the input voltage into a conversion voltage; a power output unit coupled to the LED light source; a first thermistor unit connected between the power input unit and the voltage conversion unit; a second thermistor unit connected between the voltage conversion unit and the power output unit, where the second thermistor unit and the conversion voltage generates a driving current passing through the LED light source; where the resistance of the first thermistor unit is positively correlated to its sensed temperature, and the resistance of the second thermistor unit is positively correlated to its sensed temperature to stabilize the driving current.

Abstract: An LED UV sterilization device, including a lens assembly and a light source assembly; the lens assembly includes a plurality of lenses of different materials suitable for light of different wavelengths; the light source assembly includes a visible light source assembly and an ultraviolet light source assembly. Visible light irradiated by the visible light source assembly and invisible ultraviolet light irradiated by the ultraviolet light source assembly pass through lenses of corresponding materials and form an overlapped light spot, so that an irradiation location of the invisible ultraviolet light is indicated by the visible light. The LED UV sterilization device not only realizes safe disinfection and sterilization, but also visualizes the sterilization process. The sterilization process is safer and more reliable, and the sterilization area is more accurate.

Abstract: An LED driving circuit and an LED lamp are provided. The driving circuit comprises a power input unit coupled to an input voltage; a voltage conversion unit coupled to the power input unit and converting the input voltage into a conversion voltage; a power output unit coupled to the LED light source; a first thermistor unit connected between the power input unit and the voltage conversion unit; a second thermistor unit connected between the voltage conversion unit and the power output unit, where the second thermistor unit and the conversion voltage generates a driving current passing through the LED light source; where the resistance of the first thermistor unit is positively correlated to its sensed temperature, and the resistance of the second thermistor unit is positively correlated to its sensed temperature to stabilize the driving current.