Marine searchlight

Abstract

The invention provides a marine searchlight. The marine searchlight comprises a light tube, wherein a parabolic reflector, a motor and a movable support are arranged in the light tube; the movable support comprises ball screw and an L-shaped connecting piece, one end of the L-shaped connecting piece is fixed at the bottom of the parabolic reflector, the other end of the L-shaped connecting piece is in threaded connection with the ball screw, the motor is arranged at the bottom of the light tube, and the ball screw and an output shaft of the motor are coaxially connected; a fixed support and a bulb are arranged in the light tube, the bulb is fixed on a central shaft of the light tube through the fixed support, the fixed support comprises a connecting rod and annular connecting pieces arranged at two ends of the bulb respectively in a sleeving manner, and two ends of the connecting rod are in threaded connection with the annular connecting pieces and the wall of the light tube. The marine searchlight has the beneficial effects that the relative position of the parabolic reflector is changed through control of relative movement of the L-shaped connecting piece and the ball screw by starting and stopping the motor, and safe zooming is realized; a slide rail and a slider can have a limit function on the parabolic reflector, and the parabolic reflector is enabled to move along the slide rail.

Description

[0001] This case is a divisional application with the filing date of 2015-03-17, the application number being 201510116101.X, and the invention patent named "a marine searchlight" as the parent case. Technical field [0002] The invention belongs to the field of lamps and lanterns, in particular to a marine searchlight. Background technique [0003] Xenon lamp is also called HID gas discharge headlamp. It replaces traditional tungsten filament with high-pressure xenon wrapped in a quartz tube, and uses high-voltage current to activate xenon to form an arc light that can continuously discharge light between two electrodes. The white super-strong arc light produced by xenon can increase the color temperature of the light and emit the sun's rays similar to daytime. This kind of light has a significant effect on improving the clarity of sight at night and in fog. In addition, the xenon lamp has no filament, so it will not cause the problem of scrap due to broken filament, and the serv...

AI Technical Summary

Problems solved by technology

In order to improve the IP level, the existing marine searchlights are often fully sealed with lamp tubes. This kind of searchlight has poor heat dissipation performance, while high-power xenon lamps produce a lot of heat, which limits the use of high-power xenon lamps.

[0005] In order to realize the free switching between long-distance spotlight irradiation and short-distance astigmatism irradiation, the existing searchlights often zoom by changing the position of the bulb in the lamp tube, but because the xenon lamp will generate tens of thousands of volts of high-voltage electricity when the lamp is just lit , and the xenon bulb is connected to the power supply, using this zoom method will bring great safety hazards to the user

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