Automatic focusing LED (Light Emitting Diode) searching lamp

Abstract

The invention provides an automatic focusing LED (Light Emitting Diode) searching lamp and belongs to the technical field of solid-state illumination of LED semiconductors. The automatic focusing LED searching lamp comprises a lamp box, a light source component, a spotting component, a focusing component, a focusing moving mechanism, a power transmission mechanism, a control device and a radiator, wherein the lamp box comprises a top plate, a base plate, a piece of protecting glass, a rear back plate and two lateral panels; the light source component comprises an aluminum-base copper-clad plate and a plurality of high-power LED lamp beads; the spotting component comprises a spotting lens bracket and a plurality of aspheric surface spotting lenses; the focusing component comprises a focusing lens bracket and a plurality of Fresnel lenses; the focusing moving mechanism comprises a guide rail and a slide block; the power transmission mechanism comprises a stepping motor, a coupler, a screw rod, a flange and a connecting bracket; the control device comprises a control box and is electrically connected with the stepping motor and the high-power LED lamp beads; and the radiator comprises a heat guiding plate, a heat guiding pipe and fins. The automatic focusing LED searching lamp has the advantages of high lighting effect, less energy consumption, energy conservation, environmental friendliness, green and zero pollution, good radiating effect, long service life, reliable running and low maintenance cost.

Description

technical field [0001] The invention belongs to the technical field of LED semiconductor solid-state lighting, and in particular relates to an LED search light that can automatically adjust the light emitting angle. Background technique [0002] The use of search lights in the military began in the 19th century. At that time, it was mainly used to search for small enemy torpedo boats, coastal defense coastal artillery positions and air defense forces at night. During World War II, search lights were widely used against enemy air raids at night. At that time, the anti-aircraft artillery used two search lights at the same time. From the elevation angle of the search lights, the exact height of the enemy bomber could be calculated with trigonometric functions, and then used to set the anti-aircraft shell fuse to achieve the maximum effect. At that time, the search light made by General Electric used a gyro-ceremonial lamp holder, a rhodium-plated disc-shaped concave mirror wit...

AI Technical Summary

Problems solved by technology

This is also the main difficulty currently restricting LED from replacing short-arc xenon bulbs as search light sources: First, it is the problem of light concentration. Although LED has high luminous efficiency, its luminous flux per unit area is not high. To meet actual lighting needs, it will be The cumulative light-emitting area of ​​LEDs is relatively large. How to converge a light source with a large light-emitting area into a beam with an angle within 2°, and also consider the utilization rate of light and the cost of implementation. The existing light-concentrating methods cannot Satisfied; secondly, it is the problem of automatic focusing. During the focusing process, it is necessary to keep the center of the LED light source and the center of the light-collecting part on a straight line as much as possible. This is also a big problem; in addition, high-power LED lamps have high heat dissipation requirements, but the heat dissipation structure in the prior art cannot meet the above requirements, which will affect the actual service life of LED lamps

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