Abstract: An inductor driving device includes multiple switching elements and a control circuit, wherein an inductor is driven according to switching of the multiple switching elements. The control circuit is arranged to generate a control signal for controlling the multiple switching elements. In a first mode, the control signal has a constant frequency. In a second mode, the control circuit adjusts a frequency of the control signal and continuously changes a current direction of the inductor, to generate one of multiple audio signals through the inductor.

Abstract: A coil module is provided, including a second coil mechanism. The second coil mechanism includes a third coil assembly and a second base corresponding to the third coil assembly. The second base has a positioning assembly corresponding to a first coil mechanism.

Abstract: A control method applied to a servomotor, wherein the servomotor includes a motor, and the control method includes: setting a mode of the servomotor as a predetermined mode corresponding to a predetermined communication protocol; receiving an input signal from a controller for controlling the motor, wherein the controller is coupled to the servomotor; and switching the mode of the servomotor from the predetermined mode to one of a plurality of candidate modes according to a frequency of the input signal.

Abstract: A semiconductor light emitting element includes a transparent substrate and a plurality of light emitting diode (LED) chips. The transparent substrate has a support surface and a second main surface disposed opposite to each other. At least some of the LED structures are disposed on the support surface and form a first main surface where light emitted from with a part of the support surface without the LED structures. Each of the LED structures includes a first electrode and a second electrode. Light emitted from at least one of the LED structures passes through the transparent substrate and emerges from the second main surface. An illumination device includes the semiconductor light emitting element and a supporting base. The semiconductor light emitting element is disposed on the supporting base, and an angle is formed between the semiconductor light emitting element and the supporting base.

Abstract: The present invention relates to a light emitting diode (LED). The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively.

Abstract: The present invention relates to a light emitting diode (LED). The LED comprises an LED die, one or more metal pads, and a fluorescent layer. The characteristics of the present invention include that the metals pads are left exposed for the convenience of subsequent wiring and packaging processes. In addition, the LED provided by the present invention is a single light-mixing chip, which can be packaged directly without the need of coating fluorescent powders on the packaging glue. Because the fluorescent layer and the packaging glue are not processed simultaneously and are of different materials, the stress problem in the packaged LED can be reduced effectively.

Abstract: A semiconductor light emitting element includes a transparent substrate and a plurality of light emitting diode (LED) chips. The transparent substrate has a support surface and a second main surface disposed opposite to each other. At least some of the LED structures are disposed on the support surface and form a first main surface where light emitted from with a part of the support surface without the LED structures. Each of the LED structures includes a first electrode and a second electrode. Light emitted from at least one of the LED structures passes through the transparent substrate and emerges from the second main surface. An illumination device includes the semiconductor light emitting element and a supporting base. The semiconductor light emitting element is disposed on the supporting base, and an angle is formed between the semiconductor light emitting element and the supporting base.

Abstract: An inflatable exhibition product includes a primary inflatable product, an auxiliary characteristic inflatable product received inside and communicating with the hollow body of the primary inflatable product and an air blower assembly mounted at the bottom of the hollow body and having a hollow casing provided therein an upper chamber to receive therein a top blade set and a lower chamber to receive therein a bottom blade set. Rotation of the bottom blade set is able to inflate the auxiliary characteristic inflatable product and the primary inflatable product and rotation of the top blade set is able to suck in the particles from the inlet and project them out to the interior of the hollow body from the outlet.

Abstract: A driver with a reverse-rotation preventer for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a reverse-rotation preventer. The rotating assembly connects to and rotates the rotating body and has a synchronous motor that rotates in a direction and has a shaft. The shaft is driven by the synchronous motor and rotates the rotating body. However, the synchronous motor will reverse its rotation when the rotating body encounters even temporary resistance while rotating. The reverse-rotation preventer applies a resistance when the rotating body rotates in the wrong direction to make the synchronous motor reverse rotation. Consequently, the reverse-rotation preventer ensures that the rotating inflatable exhibit rotates in the desired direction.

Abstract: A motive inflatable display has a first inflatable compartment, a second inflatable compartment, a third inflatable compartment, a blower and a two position and four opening valve. The second inflatable compartment and the third inflatable compartment are mounted on the first inflatable compartment. The blower is connected to the first inflatable compartment to expend the first inflatable compartment. The two position and four opening valve is connected to the inflatable compartments to expand or flatten the inflatable compartments in turn so that the compartments are able to upraise, down, wave and nod.

Abstract: An LED holder has a housing, a disc mounted in a lower end of the housing, a seat formed on the disc, a pair of sockets formed in the seat and a bracket mounted detachably on the seat to hole the LED. Hence, the LED is assembled and disassembled easily.

Abstract: A driver for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a reverse-rotation preventer. The rotating assembly connects to and rotates the rotating body, has a synchronous motor. The synchronous motor rotates in a direction and has a shaft. The shaft is driven by the synchronous motor and rotates the rotating body. However, the synchronous motor will reverse its rotation when the rotating body encounters even temporary resistance while rotating. The reverse-rotation preventer applies a resistance when the rotating body rotates in the wrong direction to make the synchronous motor reverse rotation again to the desired direction. So the reverse-rotation preventer ensures that the rotating inflatable exhibit rotates in the desired direction.

Abstract: A multicolor light-emitting diode (LED) light string includes multiple serially connected LED components. Each LED component includes multiple chips and multiple pairs of positive and negative pins. The pairs of the positive and negative pins are respectively and electrically connected to positive and negative poles of the corresponding LED chip. Further, the LED chips with the same light color are serially connected through the positive and negative pins. In this way, the LED light string can be driven by different voltage sources at different times to show different light colors.

Abstract: A lighting tree has a base, a stand mounted on the base, multiple lighting branches connected to the stand, multiple lighting leaves expanding from each lighting branch, and a control box incorporated with a speaker. Each lighting branch has a lighting element mounted in one end of the lighting branch. The control box determines whether the lighting elements should be activated. Based on different types of music output by the speaker, the control box determines the lighting branches and lighting leaves to be turned on or off.

Abstract: A dual output blower for inflatable puppet has a fan and a valve assembly. The fan has an inlet, a primary outlet and a valve outlet. The valve assembly comprises a body, a switching board and a driver. The body has a valve chamber formed in the body, a valve inlet, two valves and a blower output, each communicating with the valve chamber. The switching board is rotatably mounted in the valve chamber. The driver is mounted securely on the switching board and rotates the switching board to determine which valve of the valve assembly inputs and outputs air. When an inflatable puppet is connected to one of the valves of the valve assembly, the driver may control the orientation of the switching board to guide the air and make the inflatable puppet perform novel and entertaining movements.

Abstract: A driver with a reverse-rotation preventer for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a reverse-rotation preventer. The rotating assembly connects to and rotates the rotating body and has a synchronous motor that rotates in a direction and has a shaft. The shaft is driven by the synchronous motor and rotates the rotating body. However, the synchronous motor will reverse its rotation when the rotating body encounters even temporary resistance while rotating. The reverse-rotation preventer applies a resistance when the rotating body rotates in the wrong direction to make the synchronous motor reverse rotation. Consequently, the reverse-rotation preventer ensures that the rotating inflatable exhibit rotates in the desired direction.

Abstract: A driver for an inflatable rotating exhibit is mounted inside an inflatable rotating exhibit having a transparent inflatable body and a rotating body and has a rotating assembly and a reverse-rotation preventer. The rotating assembly connects to and rotates the rotating body, has a synchronous motor. The synchronous motor rotates in a direction and has a shaft. The shaft is driven by the synchronous motor and rotates the rotating body. However, the synchronous motor will reverse its rotation when the rotating body encounters even temporary resistance while rotating. The reverse-rotation preventer applies a resistance when the rotating body rotates in the wrong direction to make the synchronous motor reverse rotation again to the desired direction. So the reverse-rotation preventer ensures that the rotating inflatable exhibit rotates in the desired direction.

Abstract: A motive inflatable display has a first inflatable compartment, a second inflatable compartment, a third inflatable compartment, a blower and a two position and four opening valve. The second inflatable compartment and the third inflatable compartment are mounted on the first inflatable compartment. The blower is connected to the first inflatable compartment to expend the first inflatable compartment. The two position and four opening valve is connected to the inflatable compartments to expand or flatten the inflatable compartments in turn so that the compartments are able to upraise, down, wave and nod.

Abstract: An LED holder has a housing, a disc mounted in a lower end of the housing, a seat formed on the disc, a pair of sockets formed in the seat and a bracket mounted detachably on the seat to hole the LED. Hence, the LED is assembled and disassembled easily.

Abstract: A multicolor light-emitting diode (LED) light string includes multiple serially connected LED components. Each LED component includes multiple chips and multiple pairs of positive and negative pins. The pairs of the positive and negative pins are respectively and electrically connected to positive and a negative poles of the corresponding LED chip. Further, the LED chips with the same light color are serially connected through the positive and negative pins. In this way, the LED light string can be driven by different voltage sources at different times to show different light colors.