Abstract: An improved structure of a speaker comprises a cone frame, a surround and a diaphragm, wherein a circumference of the diaphragm is sealed to an edge of an opening of the cone frame. A container portion is disposed on an inner side of the opening of the cone frame. The surround is disposed between the diaphragm and the container portion of the cone frame. Therefore, when an audio-frequency electrical signal is coupled with a voice coil inside the cone frame, the voice coil outputs an audio signal to drive the diaphragm to move and generate a sound. The present invention uses the surround to let the diaphragm move up and down with less resistance, which helps the diaphragm move more smoothly and reduces a distortion of sounds and increases the sensitivity of sound pressure level by enlarging the diaphragm moving area.

Abstract: An improved heat sink structure for car power adapter has an air-in vent on the lateral side of the power adapter, an air-out vent on an upper housing of the power adapter, a circuit board disposed within the power adapter wherein a fan is mounted on the circuit board and a heat sink is disposed on the fan. The present invention implements the heat sink with the fan so as to suck cold air into the power adapter via the air-in vent. When the electronic elements on the circuit board generate heat, the heat sink is capable of conducting the heat from the electronic elements of the circuit board and the cold air enhances the efficiency in heat exchange. Subsequently, the heated air can be exhausted to outside via the air-out vent by the fan, thereby prolonging the lifetime and reducing the breakdown possibilities of the heat sink structure.

Abstract: A structure of connectors includes a fixed portion and a movable portion. Two hooks of the fixed portion allows for accommodating the cylinders of the push-and pull means of a movable portion, and the connecting terminals of the fixed portion and the connecting terminals of the movable portion are disposed correspondingly for temporal corresponding combining the fixed portion and the movable portion.

Abstract: A transducer is provided with at least one fuse base along with a fuse built in either side of the transducer, and an upper cover is provided for protecting component parts contained in the transducer, and an opening with a protective cap is provided on the upper cover at the position facing to each corresponding fuse for keeping out infringement of foreign materials and detachable for replacement of the fuse. With this structure, upon replacement of the faulted fuse, it is not necessary to turn upside down for detaching the base cover to replace the fuse as that is done in a traditionally constructed transducer.

Abstract: A kind of digital audio frequency optimizer, principally save previously frequency response curve of speaker and voice box in read-only memory (EFPROM). And CPU is control center. After reading serial signal of analog/digital signal transducer and arranging to be apposition signal through CPU, then send apposition signal to digital signal processor (DSP) to operate with frequency curve of speaker and voice box save on read-only memory. Then send operated results back to CPU to transfer to serial signal. Then transmit to digital/analog signal transducer to transfer to analog signal. After proceeding filter and amplify power by power amplifier through filter and buffer, then output speaker and voice box. Making it can output flat frequency response curve.

Abstract: This invention provides a designed structure with push-pull unit speakers, mainly, one or more than one magnet assembly structure additionally being provided between the two unit speakers located in the current sound box so that the magnetic structure and the electromagnetic structure, although both being close together, are made to be repulsive to each other; thereby a push-pull action resulting in all the formed magnetic fields after the current is ON may be used to solve the problem of the speaker in instability and distortion at low frequency for further exaltation of the power bearable by speaker and the efficiency without any limit of sound box or other aspects.

Abstract: The present invention relates to structural improvement for glass sound cases, especially those with variable formation, beautifying effects and visual variation, wherein the materials of traditional sound cases with unchangeable formation are replaced with variable aluminum or glass and a glass of variable shape being covered on either side of the one-piece hollow frame. Inside the frame installs several speakers and relative components. Also, several LED or luminous components are placed around the speakers to highlight the inner structure of the frame and the entire modeling through the transparent glass cover. With such a design wherein the frame body and the transparent glass cover can be randomly assembled, the sound case is full of variation and beautifying effects. The transparent glass covers spotlights the fast, slow, big and small vibration of the speakers inside the frame and the LEDs or luminous components add more visual variation to the sound case.