Abstract: A lamp shade structure includes a shade body for being mounted by a light emitting member. The shade body includes first and second ends spaced in a width direction perpendicular to a longitudinal axis of the light emitting member. The shade body further includes an inner surface having a convex upper end. The inner surface includes a first reflecting surface between the first end and the upper end of the inner surface and a second reflecting surface between the second end and the upper end of the inner surface. A length of the first reflecting surface in the width direction is larger than a length of the second reflecting surface in the width direction so that the light emitting member can generate optical beams of unsymmetrical illuminance distribution, and that the effect of increasing beam angle and expanding illumination range can then be achieved.

Abstract: A DC conversion system includes a power-generating device, a power storage device, and a DC boost circuit. The power-generating device transforms power from natural resources such as solar power and wind force into a direct current power source. The direct current voltage output from the power-generating device can be stepped up directly from 6-12 volts to high voltage of 200-680 volts by the DC boost circuit and thereby obviate the need to perform a DC to AC conversion.

Abstract: A DC digital starting device includes a voltage-increasing circuit, a first feedback control circuit, a frequency-varying circuit, and a second feedback control circuit. The voltage-increasing circuit provides a voltage for a load in a starting state and a normal working state. The first feedback control circuit detects voltage signals of the voltage-increasing circuit and the load and controls output voltage of the voltage-increasing circuit. The frequency-varying circuit is electrically connected to the voltage-increasing circuit for modulating frequency of the output voltage of the voltage-increasing circuit. The second feedback control circuit receives a voltage signal from the frequency-varying circuit and controls frequency of output voltage of the frequency-varying circuit.

Abstract: A DC transformer system comprises a power-generating device, a power storage device, and a DC boost circuit. The power-generating device transforms natural resources such as solar power and wind force into direct current power source. The direct current voltage outputted from the power-generating device can be stepped up directly from 6-12 volts to high voltage of 200-680 volts by the DC boost circuit. As a result, in the entire boost process, it is not necessary to perform the DC to AC conversion process before performing the boost step. Accordingly, the conventional energy conversion process, which causes 20 percent energy loss, can be improved by the present invention so as to provide the energy saving benefit.

Abstract: A lamp body for a fluorescent lamp has multiple sections arranged on an inner surface of the lamp body. The sections include at least one coated section coated with fluorescent powders and at least one non-coated section being naked and kept free from fluorescent powders. The fluorescent powders generate visible lights when colliding with ultraviolet rays. The visible lights can directly pass out of the lamp body through the at least one non-coated section to form a light source and improve a luminance of the fluorescent lamp.

Abstract: A DC digital starting device includes a voltage-increasing circuit, a first feedback control circuit, a frequency-varying circuit, and a second feedback control circuit. The voltage-increasing circuit provides a voltage for a load in a starting state and a normal working state. The first feedback control circuit detects voltage signals of the voltage-increasing circuit and the load and controls output voltage of the voltage-increasing circuit. The frequency-varying circuit is electrically connected to the voltage-increasing circuit for modulating frequency of the output voltage of the voltage-increasing circuit. The second feedback control circuit receives a voltage signal from the frequency-varying circuit and controls frequency of output voltage of the frequency-varying circuit.