Abstract: The present invention provides a monitor-displayed device for car rear vision. It is to install monitors on a dashboard in the car or the car frame on two sides of the front windscreen. The traditional two rear vision mirrors of the car are replaced by the monitors. Image data taken by an image receiver can be displayed synchronously. Rear side image data can be provided to the driver with a broader viewing angle.

Abstract: A recording device for a moving vehicle includes an image receiving unit, a speed calculating unit, a time unit, a positioning unit and a storing unit. The recording device records outside images when the vehicle moves via a camera lens of the image receiving unit. The speed calculating unit calculates speed using a speed gauge linked to the vehicle. Users can adjust time according to their demand by utilizing a time calculating function built in the time unit. Coordinates of vehicle location are obtained by a positioning unit linked to a satellite. The data mentioned above is stored in the storing unit. The device is installed inside the vehicle before the vehicle is factory assembled. When users start the vehicle, the recording device starts recording. When users turn off the vehicle and leave, the recording device can be re-started by using a switch. The image receiving unit keeps recording images.

Abstract: A connection of the sound bowl and connecting portion of a loudspeaker is disclosed. The connection area is adhered with the elastic materials similar to the materials of sound bowl and connecting portion in order to beautify the appearance of loudspeaker and enhance the adhesion. Thereby the tolerance of the loudspeaker is enhanced. Thus, the loudspeaker is tolerable to vibration and produces sound with precise tunes, and stabilizes the quality of sound.

Abstract: A connection of the sound bowl and connecting portion of a loudspeaker is disclosed. The connection area is adhered with the elastic materials similar to the materials of sound bowl and connecting portion in order to beautify the appearance of loudspeaker and enhance the adhesion. Thereby the tolerance of the loudspeaker is enhanced. Thus, the loudspeaker is tolerable to vibration and produces sound with precise tunes, and stabilizes the quality of sound.