Patent Application
20110249466
1. Field of the Invention
The present invention relates to a wind-driven light-emitting device, particularly to a wind-driven light-emitting device, which can emit light without using any external electric power, wherein wind propels the blades, and the magnetic element coupled to the blades is rotated to induce voltage on a coil, whereby the light-emitting (or light-guiding) elements on the blades are driven by the voltage to emit light and provide a decorative lighting effect.
2. Description of the Related Art
General decorative light-emitting devices are usually powered by batteries or commercial electricity. Because of the emerging environmental protectionism, many schemes are proposed to reduce power consumption, including the utilization of wind power. Wind power is a substitute energy able to reduce the consumption of fossil fuels. Based on many years' experience in the related field and via persistent research and experiment, the Inventor thus proposes a wind-driven light-emitting device, wherein wind is used to generate electricity and drive a light-emitting device, whereby is achieved energy efficiency and carbon reduction.
The primary objective of the present invention is to provide a wind-driven light-emitting device, wherein wind propels the blades to rotate, and the rotating blades drives the magnetic element to rotate and induce voltage on the coil, whereby the light-emitting (or light-guiding) elements installed on the blades are powered to emit light and provide a decorative lighting effect without using any external electric power.
The wind-driven light-emitting device of the present invention comprises a housing, a first shaft sleeving member, a second shaft sleeving member and a plurality of blades. The blades are coupled to a first shaft. The first shaft has a first speed-change gear driving a second speed-change gear of a second shaft to rotate. The second shaft has a magnetic element. The second shaft sleeving member has a coil connected with a circuit. The circuit is connected to a plurality of light-emitting (or light-guiding) elements arranged on the blades. When the device is windward, wind propels the blades to rotate. Thus, the magnetic element of the second shaft is rotated to induce voltage on the coil. The circuit rectifies, boosts, stabilizes and regulates the power to light up the light-emitting (or light-guiding) elements. Thereby, the present invention can provides a decorative lighting effect without using any external electric power. Thus is achieved energy efficiency and carbon reduction.
In the present invention, the light-emitting elements may be light-emitting diodes or organic light-emitting diodes. The light-guiding element integrates an optical fiber/acrylic material with a light emitter to provide diverse lighting effects.
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The ends of the blades 2 are jointly connected to a first shaft 21. The first shaft 21 has a first speed change gear 211. The first speed change gear 211 transmits mechanical energy to a second speed change gear 311 of a second shaft sleeving member 12 and drives a second shaft 31 to rotate. A magnetic element 312 is installed at one end of the second shaft 31. The second shaft 31 is positioned by a second fastener 33. The second shaft sleeving member 12 has a coil 121, and the coil 121 is connected with a circuit 13 containing rectifiers, boosters, voltage stabilizers and current regulators. The circuit 13 is connected with at least one light-emitting element 24 (or at least one light-guiding element 24′) emitting different colors of light. The light-emitting elements 24 (or light-guiding elements 24′) are installed on the blades 2 and visible externally. The first shaft 21 where the blades 2 are installed passes through the first shaft sleeving member 1 and is positioned by a first fastener 25. Thereby, the blades 2 can rotate free. The light-emitting element 24 may be a light-emitting diode or an organic light-emitting diode. The light-guiding element 24′ is a combination of an optical fiber/acrylic material and a light emitter.
Thus is constructed a wind-driven light-emitting device 100. When the wind-driven light-emitting device 100 is windward, wind propels the blades 2 to rotate. Thus, the magnetic element 312, which is installed on the second shaft 31, is driven to rotate along the same direction. The magnetic field of the rotating magnetic element 312 induces voltage on the coil 121. Via the rectifiers, boosters, voltage stabilizers and current regulators of the circuit 13, the voltage drives the light-emitting elements 24 (or light-guiding elements 24′) on the blades 2 to light up. Thereby, the device of the present invention is powered to emit light and provide a decorative lighting effect.
The light-emitting elements 24 may be common light-emitting diodes, which emit identical color or different colors of light. Alternatively, the light-emitting elements 24 are the emerging organic light-emitting diodes. The colorful organic light-emitting diodes can implement the device of the present invention to provide a better decorative lighting effect.
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In another embodiment, light-guiding elements 24′ replace the light-emitting elements 24. Each light-guiding element 24′ uses an optical fiber/acrylic material and a light emitter 241 to perform the same function as the light-emitting element 24. Refer to
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In summary, the device of the present invention comprises a coil, a magnetic element and blades, wherein wind propels the blades to rotate, and the rotating blades drive the magnetic element to rotate, and the rotating magnetic element induces voltage on the coil, whereby the light-emitting elements on the blades are powered to emit light and provide a decorative lighting effect without using any external electric power.
The embodiments described above are only to exemplify the present invention but not to limit the scope of the present invention. Any equivalent modification or variation according to the scope of the present invention is to be also included within the scope of the present invention.
