Abstract: A projection light with synchronous tracking function includes a main body, a lighting module mounted in the main body, a signal receiving module disposed on the main body and a signal transmission module for a user (or a mobile article) to wear. The main body defines a chamber for receiving a transmission mechanism. The signal transmission module serves to output a signal to the signal receiving module. After receiving the signal output from the signal transmission module, the signal receiving module controls the transmission mechanism to drive the main body (and the lighting module) to longitudinally and/or transversely rotate so as to synchronously track the direction and position of the user (or the mobile article).

Abstract: A searchlight includes a lamp housing provided with a snap-action switch and/or a photo-electric switch, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing; the lamp assembly has a back provided with a positioning lever for use in touch with the snap-action switch of the lamp housing; and the support has a top provided with a positioning lever for use in interrupting the light path of the photoelectric switch of the lamp housing; due to possessing aforesaid structure the searchlight therefore has a function of automatically returning to starting position when power supply is switched off.

Abstract: An LED lamp assembly includes LED circuit boards having LEDs as light sources, and concave parabolic lens surfaces as light condensing surface to replace convex lens surfaces having been conventionally used for LED light sources as well as to allow the LED circuit boards to be deposited at sites where is so well air ventilation that heat generated thereby is dissipated rapidly to ensure good heat dissipation for the LED circuit boards; and a reflective LED searchlight comprises the LED lamp assembly as an essential component and features a good heat dissipation for its LED circuit boards.

Abstract: An LED lamp assembly includes LED circuit boards having LEDs as light sources, and concave parabolic lens surfaces as light condensing surface to replace convex lens surfaces having been conventionally used for LED light sources as well as to allow the LED circuit boards to be deposited at sites where is so well air ventilation that heat generated thereby is dissipated rapidly to ensure good heat dissipation for the LED circuit boards; and a reflective LED searchlight comprises the LED lamp assembly as an essential component and features a good heat dissipation for its LED circuit boards.

Abstract: A spotlight includes a lamp housing, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing, wherein an electrically-conductive slip ring is provided at where the lamp housing is pivotally connected to the support to allow the spotlight capably providing 360-degree horizontal lighting.

Abstract: A wireless remote-control hydraulic pump mechanism comprising a hydraulic pump assembly, a remote-control device and a wireless transmitter is suitable for being installed on a dump truck to provide for the user to control the dumping by wireless remote-control operations, wherein the remote-control device in addition to wireless remote-control functions may further have optional wired manual remote-control functions and/or power voltage detection functions so that the user may select depending on actual situations to increase dumping safety of dump trucks.

Abstract: A moisture-proof spotlight includes a lamp housing, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing, wherein the lamp housing contains therein a moisture-proof partition set provided for a vertical driving device and a horizontal driving device to affix thereto and also together installed inside the lamp housing for moisture-proof, thereby the defect of a conventional spotlight due to its horizontal driving device installed in the support tended to be affected by moisture is capably eliminated.

Abstract: A spotlight includes a lamp housing, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing, wherein an electrically-conductive slip ring is provided at where the lamp housing is pivotally connected to the support to allow the spotlight capably providing 360-degree horizontal lighting.

Abstract: A moisture-proof spotlight includes a lamp housing, a support pivotally supporting the lamp housing from below and a lamp assembly pivotally installed inside the lamp housing, wherein the lamp housing contains therein a moisture-proof partition set provided for a vertical driving device and a horizontal driving device to affix thereto and also together installed inside the lamp housing for moisture-proof, thereby the defect of a conventional spotlight due to its horizontal driving device installed in the support tended to be affected by moisture is capably eliminated.

Abstract: A visual warning device has both a warning function to provide various colored flashing lights and a lighting function to adjustably project the lighting in preferable direction, which at least comprises a lighting device comprising an interior spotlight fixedly placed in the inside of the visual warning device and a beacon-like waterproof cover for mostly shielding the interior spotlight by outside exposure securely fastened onto the visual warning device, so that the interior spotlight has no required for an additional waterproof means pivotally mounted thereon as before; in particular, the interior spotlight further has both a vertical drive means and a horizontal drive means designed by uncovered structure, due to both the vertical drive means and the horizontal drive means unnecessarily concealed or placed in the inside of the interior spotlight as before, the interior spotlight has much simpler structure than before and more saving cost.

Abstract: A portable searchlight has a replaceable sealing lamp cover suitably fitted for use in effectively blocking moisture from seeping or flowing into the interior of the portable searchlight for weather resistance, and the portable searchlight therefore can still normally deliver the illumination function in any damp environments.

Abstract: A visual warning device has both a warning function to provide various colored flashing lights and a lighting function to adjustably project the lighting in preferable direction, which at least comprises a lighting device comprising an interior spotlight fixedly placed in the inside of the visual warning device and a beacon-like waterproof cover for mostly shielding the interior spotlight by outside exposure securely fastened onto the visual warning device, so that the interior spotlight has no required for an additional waterproof means pivotally mounted thereon as before; in particular, the interior spotlight further has both a vertical drive means and a horizontal drive means designed by uncovered structure, due to both the vertical drive means and the horizontal drive means unnecessarily concealed or placed in the inside of the interior spotlight as before, the interior spotlight has much simpler structure than before and more saving cost.

Abstract: A mobile device protective case (10) includes a frame (20) and a slidable shutter (30) mounted on the frame (20) to function as a slidable component. After a mobile device (50) has been inserted into the frame (20), the slidable shutter (30) hides a touch panel (51) of the mobile device (50) to prevent the touch panel (51) from being scratched or scraped. To start using the mobile device (50), a user moves the slidable shutter (30), such that the touch panel (51) of the mobile device (50) is exposed and can be directly operated by the user.

Abstract: A mobile device protective case (10) includes a frame (20) and a slidable shutter (30) mounted on the frame (20) to function as a slidable component. After a mobile device (50) has been inserted into the frame (20), the slidable shutter (30) hides a touch panel (51) of the mobile device (50) to prevent the touch panel (51) from being scratched or scraped. To start using the mobile device (50), a user moves the slidable shutter (30), such that the touch panel (51) of the mobile device (50) is exposed and can be directly operated by the user.

Abstract: Mobile phone call receiving device capable of automatically turning off car stereo for a user to safely use the mobile phone when driving. The device includes: a main frame for sensing a radio-frequency signal input by the mobile phone and sending out a carrier signal and an extension which according to the carrier signal turns off the car stereo or silences the car stereo. When receiving a mobile phone call, the device is able to turn off the car stereo or silence the car stereo so that a user can concentratively use the mobile phone without minding turning off or silencing the car stereo.

Abstract: A learning-type remote control device is capable of detecting both carrier frequency and control code in a remote control signal that is transmitted by a target remote control device, and includes a variable-frequency oscillating unit for generating a carrier signal having a frequency which varies according to magnitude of a frequency control signal from a digital-to-analog converting unit, a mixing unit for generating a mixed signal by mixing the carrier signal and the remote control signal, a signal detecting unit for generating a detected frequency signal and a detected control signal from the mixed signal, and a processing unit operable in a learning mode to provide a varying frequency count input to the converting unit. The processing unit detects lower and upper sideband frequency counts based on when the detected frequency signal from the signal detecting unit reaches a preset threshold voltage to determine a frequency count that corresponds to the carrier frequency of the remote control signal.

Abstract: A lock adapted for use in automatic gear shifts and mounted in a gear shift head, including a core, a stop block, an escutcheon, and a cylinder. The core has latch bolts at either side, a keyway at a front end, and a projection at a rear end. The stop block has a stop hole at a front end for receiving the projection of the core, and a stop projection at a rear end. The escutcheon has an insertion hole at a front end, the insertion hole having a cross section comprised of an oval shape and a rectangular shape sized to match the stop block, a through hole at a rear end, and a lock post that passes through the through hole, the lock post including a head portion of a larger size and a press piece projecting from the rear end of the escutcheon. A spring is fitted over the press piece and that part of the lock post exposed on the outside of the rear end of the escutcheon. A lock spring is further provided on the escutcheon near the press piece and adapted to urge against the inner wall of the gear shift head.