Abstract: A driving circuit apparatus, including: a power converter, a reference light source, a light shield member, a luminance detection element, a comparison circuit, and a controller. The power converter outputs a driving voltage to drive a light string to emit light. The driving voltage continuously increases toward a maximum value. One end of the reference light source is electrically connected to the light string, and the other end is electrically grounded. The light shield member has an opaque chamber, and the reference light source and luminance detection element are disposed in the chamber. The comparison circuit receives a luminance signal from the detection element and determines whether the luminance signal strength is greater than a reference signal strength. When the luminance signal strength is greater than the reference signal strength, the controller sends an interrupt signal to the power converter to set an output value of the driving voltage.

Abstract: A light string, comprising a first illumination device configured to emit a first color light; a second illumination device adjacent the first illumination device, and configured to emit a second color light, the second color being different from the first; a first wire including a first conductor and a first insulating layer, the first conductor partially exposed to form a first conductor soldering section; and a second wire, including a second conductor and a second insulating layer, the second conductor partially exposed to form a second conductor soldering section. The first conductor soldering section and the second conductor soldering section are attached to a pair of electrical contacts on each of the first and second illumination devices, and the first and second illumination devices are electrically biased such that either the first illumination device emits light or the second illumination device emits light, but not both at the same time.

Abstract: An LED line lamp provides a lamp string design which is simple in structure, small in volume, used conveniently, not fractured easily, and supplies a free creation space to common people. Plural LED lamps are connected serially on an electric wire depending on a pre-determined distance, and an end of the wire is disposed with a power connection element to be directly connected with a battery or an adapter for supplying electricity. A supporter which is harder than the wire is located at the LED lamp position, and can display light of the LED lamp. By softness of the electric wire, a required shining shape can be arranged freely according to pre-determined texts or patterns, and the LED lamp position can be protected by the supporter that it will not be damaged upon bending the wire, allowing an operation to be safer and more smoothly.

Abstract: An LED (Light-Emitting Diode) lamp bank is primarily formed with a plurality of LED lamps, a soft substrate, conduction wires, and soft vinyl. Two ends of each LED lamp bank are provided with female socket holes to connect with male connection terminals serially. A hard protective sheet is located at a position of the soft vinyl where each LED lamp is located, such that shear force of the soft vinyl at the location of the LED lamp can be increased, and an ill condition of fracture caused by stress concentration at the location of the LED lamp can be effectively prevented when the LED lamp bank is bended.