Variable-focus LED searchlight

Abstract

The utility model provides a variable-focus LED searchlight, which relates to the technical field of lighting equipment, and comprises a base, a support and a light emitting mechanism, the light emitting mechanism comprises a plurality of LED light sources and a plurality of convex lenses, the number of the LED light sources is consistent with that of the convex lenses, the convex lenses are arranged in the irradiation direction of the LED light sources, and the LED light sources are arranged on the support. The optical principle that light can be converged to a central point through light refraction of the convex lens is utilized, the convex lens is additionally arranged in front of the LED light source, and light dispersion and gathering are achieved by changing the relative distance between the LED light source and the convex lens. Therefore, the problem that the LED searchlight cannot realize accurate light condensation and illumination is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting equipment, in particular to a variable-focus LED searchlight. Background Art

[0002] Today's LED light sources are planar light sources (i.e., planar luminescence). If you want LED light sources to achieve long-distance lighting, you first need a high-power light source. The heat dissipation faced by the high-power light source itself is a major problem. Although decomposing the high-power light source into countless low-power light sources solves the heat dissipation problem, it is impossible to refract the light through the lampshade (reflector) to project it to a very far distance. This is because each of the decomposed LED light sources is an independent light source. Even if each light source is encapsulated with a small-angle lens to allow the light to shine farther, the luminous angle of the lens of the encapsulated light source can no longer be changed. It is no longer possible to achieve light convergence and gather the emitted light to a point to illuminate farther.

[0003] Another issue with these lamps is that they typically have high brightness in the center and dim light around the perimeter, creating an uneven illumination pattern that creates distinct bright and dark spots on the ground. Many manufacturers currently refer to these lamps as searchlights, but these so-called searchlights lack zoom and can only illuminate at close ranges, making them impractical for target detection and tracking. Utility Model Content

[0004] In view of this, the purpose of the present invention is to provide a variable-focus LED searchlight to solve the technical problem in the prior art that LED light sources cannot simultaneously achieve precise focusing and long-range illumination.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a variable-focus LED searchlight, including a base, a bracket and a light-emitting mechanism, the bracket is installed on the base, the light-emitting mechanism is installed on the bracket, the light-emitting mechanism includes an LED light source and a convex lens, the LED light source and the convex lens each include a plurality of them, and the number of the LED light source and the convex lens is the same, the convex lens is arranged in the irradiation direction of the LED light source, and the relative distance between the convex lens and the LED light source can be changed.

[0006] According to a preferred embodiment, the relative distance between the convex lens and the LED light source can be changed, including that the distance between the LED light source and the convex lens changes, or that the distance between the convex lens and the LED light source changes.

[0007] According to a preferred embodiment, the light-emitting mechanism includes a lamp housing, a light-emitting panel, a light source fixing plate, an electrical board and a driving mechanism. The light-emitting panel, the light source fixing plate and the electrical board are installed in the lamp housing from bottom to top in sequence. The convex lens is arranged on the light-emitting panel, and the LED light source is arranged on the light source fixing plate. One end of the driving mechanism is fixed below the electrical board, and the other end is connected to the light source fixing plate or the light-emitting panel.

[0008] According to a preferred embodiment, a heat dissipation tube is fixedly provided below the light source fixing plate, a reflector is provided at the free end of the heat dissipation tube, and the LED light source is mounted on the reflector.

[0009] According to a preferred embodiment, the light emitting panel is provided with a plurality of mounting holes, the number of the mounting holes is consistent with the number of the convex lenses, and the convex lenses are mounted on the mounting holes.

[0010] According to a preferred embodiment, a focusing tube is further installed on the mounting hole, and the convex lens is installed on the light-emitting panel through the focusing tube.

[0011] According to a preferred embodiment, a fixing column is provided in the center of the light source fixing plate, and a plurality of spokes are fixed on the fixing column, and adjacent spokes are arranged at equal intervals. One end of the spoke is fixed on the fixing column, and the other end is fixed to the edge of the light source fixing plate, and the bottom end of the driving mechanism is provided on the fixing column.

[0012] According to a preferred embodiment, a plurality of vertical rods are provided in the lamp housing, the top ends of the vertical rods are fixedly connected to the light source fixing plate, and the free ends of the vertical rods are connected to the light source fixing plate or the light emitting panel via linear bearings.

[0013] According to a preferred embodiment, a fan is provided below the electrical panel.

[0014] According to a preferred embodiment, a battery and an electrical module are provided above the electrical panel, the battery provides power for the LED light source, and the electrical module is electrically connected to the LED light source and the driving mechanism.

[0015] The variable focus LED searchlight provided by this utility model has the following technical effects:

[0016] This variable-focus LED searchlight includes a base, a bracket, and a light-emitting mechanism, and the light-emitting mechanism includes an LED light source and a convex lens. The LED light source and the convex lens each include a plurality of them, and the number of the LED light sources is the same as that of the convex lenses. The convex lenses are arranged in the irradiation direction of the LED light source, and the relative distance between the convex lenses and the LED light source can be changed. The utility model utilizes the optical principle that the refraction of light by the convex lens can converge light to a center point. A convex lens is added in front of the LED light source, and the relative distance between the LED light source and the convex lens is changed to achieve light dispersion and convergence, thereby solving the problem that the LED searchlight cannot achieve precise focusing and illumination. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0018] Figure 1 This is a side view of Example 1 of the variable-focus LED searchlight of the present invention;

[0019] Figure 2 This is a side view of Example 2 of the variable-focus LED searchlight of the present utility model;

[0020] Figure 3 yes Figure 1 or Figure 2 Main view of the medium zoom LED searchlight;

[0021] Figure 4 This is a schematic diagram of the internal structure of the light output structure of Example 1;

[0022] Figure 5 This is a schematic diagram of the internal structure of the light output structure of Example 2;

[0023] Figure 6 is a schematic structural diagram of the convex lens of Example 1 or Example 2;

[0024] Figure 7 is a schematic structural diagram of the focusing tube of Example 1 or Example 2;

[0025] Figure 8 is a dimming schematic diagram of Example 1;

[0026] Figure 9 is a side view of the light source fixing plate of Example 1;

[0027] Figure 10 yes Figure 9 A top view of the central light source fixing plate;

[0028] Figure 11 yes Figure 9 Bottom view of the central light source fixing plate;

[0029] Figure 12 is a side view of the electrical panel of Example 1 or Example 2;

[0030] Figure 13 yes Figure 12 Top view of the electrical panel;

[0031] Figure 14 yes Figure 12 Bottom view of the electrical panel.

[0032] in, Figures 1-14 :

[0033] 1. Base;

[0034] 2. Bracket;

[0035] 3. Lamp housing; 31. Protective glass;

[0036] 4. Light emitting mechanism; 41. Light emitting panel; 411. Focusing tube; 42. Light source fixing plate; 421. Fixing column; 422. Spoke; 43. Electrical board; 431. Battery; 432. Electrical module; 433. External power supply interface; 44. LED light source; 45. Convex lens; 46. Reflector; 47. Heat dissipation pipe; 48. Vertical pole; 481. Linear bearing; 49. Fan;

[0037] 5. Driving mechanism. DETAILED DESCRIPTION

[0038] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0039] The searchlights in the prior art can only illuminate at close range, and it is impossible to detect and chase targets using the light emitted by such lamps.

[0040] Aiming at the defects in the prior art, the present invention provides a variable focus LED searchlight. Figure 1-14 The utility model is described in detail with Examples 1-2 on the variable focus LED searchlight.

[0041] Example 1:

[0042] The variable focus LED searchlight provided in this embodiment is as follows: Figure 1 and Figure 3 As shown, it includes a base 1, a bracket 2 and a light emitting mechanism 4. The bracket 2 is installed on the base 1, and the light emitting mechanism 4 is installed on the bracket 2.

[0043] Detailed, such as Figure 4 As shown, the light-emitting mechanism 4 includes a lamp housing 3, a light-emitting panel 41, a light source fixing plate 42, an electrical board 43, a driving mechanism 5, an LED light source 44 and a convex lens 45. The light-emitting panel 41, the light source fixing plate 42 and the electrical board 43 are sequentially installed in the lamp housing 3 from bottom to top. The LED light source 44 and the convex lens 45 each include several pieces, and the number of the LED light sources 44 and the convex lens 45 is the same. The LED light source 44 is arranged on the light source fixing plate 42, and the convex lens 45 is arranged on the light-emitting panel 41, and the convex lens 45 is located in the irradiation direction of the LED light source 44. One end of the driving mechanism 5 is fixed below the electrical board 43, and the other end is driven and connected to the light source fixing plate 42 or the light-emitting panel 41. The relative distance between the convex lens 45 and the LED light source 44 can be changed through the driving mechanism 5.

[0044] In addition, it should be noted that the LED light source 44 of the present invention is a low-temperature light source and does not emit carbon emissions. Existing searchlights basically use xenon bulbs, with bulb powers ranging from 1000W to 3-5000W. The temperature inside the bulb exceeds 200° during operation, and the lifespan is generally only 500 hours. The operating temperature of the LED light source 44 used in the present invention can be controlled below 60°, and the light source lifespan exceeds 10,000 hours. The irradiation distance of the 400W lamp of the present invention far exceeds the focusing irradiation distance of a 1000W xenon searchlight. Therefore, the lamp of the present invention can achieve the effect of energy saving and environmental protection.

[0045] This embodiment is described in detail by taking the change in the distance between the LED light source 44 and the convex lens 45 as an example.

[0046] like Figure 4 、 Figure 6 and Figure 7 As shown, the light-emitting panel 41 is provided with a plurality of mounting holes, the number of which is consistent with the number of convex lenses 45 . The convex lenses 45 are mounted on the mounting holes. A focusing tube 411 is also mounted on the mounting holes. The convex lenses 45 are mounted on the light-emitting panel 41 through the focusing tube 411 .

[0047] The light-emitting panel 41 in this embodiment is not a translucent glass panel, but an opaque metal panel. Several mounting holes, preferably circular, are arranged in a regular pattern (at intervals). Each hole is secured with a convex lens 45, with the convex side facing outward. Above the convex lenses 45 is a corresponding light-collecting tube 411, corresponding to the number of convex lenses 45. Within the light-collecting tube 411 is an LED light source 44 with a reflector 46. This LED light source 44 is connected to the second light source mounting plate 42 above via a heat dissipation tube 47.

[0048] The focusing tube 411 of this embodiment has two functions: one is to direct the light source, that is, the emitted light can only be directed to the convex lens 45 in the front and cannot be deviated; the other is to gather the scattered light around the LED light source 44 to the convex lens 45.

[0049] Figure 8 Schematic diagram of dimming of the LED light source 44 . The LED light source 44 with a reflector moves up and down in the focusing tube 411 without contacting the inner wall of the focusing tube 411 .

[0050] like Figure 4 and Figure 9-11 As shown, a heat dissipation tube 47 is fixedly provided below the light source fixing plate 42 , a reflector 46 is provided at the free end of the heat dissipation tube 47 , and the LED light source 44 is mounted on the reflector 46 .

[0051] In this embodiment, the light source fixing plate 42 is made of aluminum. Each LED light source 44 is equipped with a reflector 46 with an angle of approximately 150°, which converges scattered light from the periphery of the LED light source 44 toward the center. Behind the LED light source 44 is an aluminum alloy heat pipe 47, which is connected to the light source fixing plate 42. The center circular hole of the heat pipe 47 is routed to the top of the light source fixing plate 42 and connected to the upper battery 431. The diameter of the reflector 46 is slightly smaller than the inner diameter of the focusing tube 411 above the convex lens 45, facilitating the vertical movement of the LED light source 44 with the reflector 46 within the focusing tube 411.

[0052] like Figure 4 and Figure 9-11 As shown, a fixing column 421 is provided at the center of the light source fixing plate 42, and a plurality of spokes 422 are fixed on the fixing column 421. Adjacent spokes 422 are arranged at equal intervals. One end of the spoke 422 is fixed on the fixing column 421, and the other end is fixed on the edge of the light source fixing plate 42. The bottom end of the driving mechanism 5 is provided on the fixing column 421.

[0053] A plurality of vertical rods 48 are provided in the lamp housing 3 . The top ends of the vertical rods 48 are fixedly connected to the electrical board 43 , and the free ends of the vertical rods 48 are connected to the light source fixing plate 42 via linear bearings 481 .

[0054] This embodiment preferably includes four spokes 422, which extend (in a cross shape) to the edge of the light source fixing plate 42. When the drive mechanism 5 pushes and pulls up and down, the four spokes 422 evenly apply force to the entire plane of the light source fixing plate 42, eliminating the problem of uneven force on the periphery due to force applied at the center point. At the same time, four vertical rods 48 (metal tubes) pass through the light source fixing plate 42 and are fixedly connected to the light-emitting panel 41 and the electrical board 43. A linear bearing 481 is installed above each vertical rod 48 passing through the light source fixing plate 42. This ensures that the light source fixing plate 42 will not generate any resistance or shift in any direction when pushed and pulled up and down by the drive mechanism 5. It also ensures that the operation of the internal drive mechanism 5 will not be affected in any way regardless of the direction in which the lamp is irradiated.

[0055] That is, the four spokes 422 of this embodiment divide the light source fixing plate 42 into four areas, and the four vertical rods 48 plus four linear bearings 481 further define these four areas, making them more stable. The drive mechanism 5 fixed at the center position below the electrical board 43 can easily pull a surface (i.e., the light source fixing plate 42) with one point. Each LED light source 44 installed below the light source fixing plate 42 is pushed and pulled up and down by the drive mechanism 5 in the focusing tube 411 fixed above the corresponding light-emitting panel 41, and the LED light source 44 also moves up and down at the same time, that is, multiple LED light sources 44 can be focused simultaneously on the same plane, ensuring that the light emitted by the lamp is uniform as a whole, and there will be no phenomenon of bright in the middle and weak around, or the aperture being defective. The distance the LED light source 44 moves up and down is consistent with the stroke of the drive mechanism 5 pushing and pulling up and down.

[0056] The key point of this utility model is to use the driving mechanism 5 to drive multiple LED light sources 44 to move synchronously in the same plane to achieve light zoom, and the light emission is uniform, without strong or weak light spots. Through zooming, the lamp can achieve large-area floodlighting, as well as localized area projection lighting, until a light column is formed to achieve spotlighting. It truly embodies the function that a searchlight should have, which can adjust the high and low beams through zooming to achieve the purpose of exploring the target area and chasing the target.

[0057] It should be noted that the driving mechanism 5 of the present invention is preferably an electric push rod, including one electric push rod, and does not exclude the use of multiple electric push rods, such as using three, distributed in a triangle (three points determine a plane), etc. Similarly, the electric push rod is not the only zoom driving means, and other driving mechanisms 5 can also realize the movement between the LED light source 44 and the convex lens 45, such as an electric slide, etc. The "several" LED light sources 44 referred to in the present invention are synchronously zoomed on the same plane, that is, no less than 3 LED light sources 44, and more than three are not limited. The power of each LED light source 44 is not limited, that is, the overall power of the lamp is not limited. The control mode of the present invention is not limited. The rotation mode of the lamp is not limited. The present invention can be built-in or externally mounted with other electrical equipment, such as cameras, infrared lamps, infrared rangefinders, etc., which can further expand the field of use. The extension and expansion of the lamp function does not affect the protection of the present invention.

[0058] like Figure 4 As shown, a fan 49 is provided below the electrical panel 43 . The fan 49 includes two fans, which can quickly dissipate the heat generated by the LED light source 44 toward the lamp housing 3 .

[0059] like Figure 12-14 As shown, a battery 431 and an electrical module 432 are provided above the electrical panel 43. The battery 431 provides power to the LED light source 44, and the electrical module 432 is electrically connected to the LED light source 44 and the drive mechanism 5. The electrical module 432 is connected to an external power supply interface 433, which includes a battery 431 control module and a drive mechanism 5 control module. The battery 431 control module is electrically connected to the battery 431 and controls the charging process of the battery 431 through the battery 431 control module, while the drive mechanism 5 control module is electrically connected to the drive mechanism 5 and is used to control the lifting and lowering of the drive mechanism 5, thereby driving the light source fixing plate 42 to lift and lower, and further driving the LED light source 44 to lift and lower.

[0060] The present invention uses electricity in two ways: 1. with an external power source; 2. with a built-in battery 431. The present invention also offers two control modes: 1. wireless control via a remote control; 2. manual control via a switch installed on the lamp housing 3, bracket 2. The lamp can be rotated in two ways: 1. manually controlled. This means a flat bearing is provided between the bracket 2 and the fixed chassis. Simply pushing the bracket 2 illuminates, explores, and tracks the desired direction or area. 2. The fixed chassis of the lamp is a pan-tilt type with an additional head-shaking mechanism. The up / down and left / right rotation of the lamp can be controlled via a remote control or backstage.

[0061] The utility model has a wide range of uses. 1. As mentioned above, its luminous effect is better than that of ordinary lighting fixtures, and it can be used in all fields such as industry, agriculture, national defense, and police work, that is, all places where lighting fixtures are used. 2. Its unique zoom function enables the light to shine farther, and the arbitrary adjustment of high and low beams further expands the scope of use of this lamp, such as use in airports, ports, bases, ships, lighthouses, etc. 3. Its zoom program can be synchronized with the zoom program of the onboard camera, that is, the camera can see clearly wherever the light shines, and can capture and record everything happening in the illuminated area in a timely manner. The camera can be used to bring ultra-distant targets that cannot be seen by the naked eye closer for identification. 4. The design of the built-in battery 431 enables this lamp to work normally for a long time without an external power supply, and can be used as a mobile light source. Such as emergency rescue, temporary on-site lighting, drone-mounted for night pipeline and road and bridge inspections, border patrols, etc.

[0062] Example 2:

[0063] The variable focus LED searchlight provided in this embodiment is as follows: Figure 2 As shown, it includes a base 1, a bracket 2 and a light emitting mechanism 4. The bracket 2 is installed on the base 1, and the light emitting mechanism 4 is installed on the bracket 2.

[0064] Detailed, such as Figure 5 As shown, the light-emitting mechanism 4 includes a lamp housing 3, a light-emitting panel 41, a light source fixing plate 42, an electrical board 43, a driving mechanism 5, an LED light source 44 and a convex lens 45. The light-emitting panel 41, the light source fixing plate 42 and the electrical board 43 are sequentially installed in the lamp housing 3 from bottom to top. The LED light source 44 and the convex lens 45 each include several pieces, and the number of the LED light sources 44 and the convex lens 45 is the same. The LED light source 44 is arranged on the light source fixing plate 42, and the convex lens 45 is arranged on the light-emitting panel 41, and the convex lens 45 is located in the irradiation direction of the LED light source 44. One end of the driving mechanism 5 is fixed below the electrical board 43, and the other end is driven and connected to the light source fixing plate 42 or the light-emitting panel 41. The relative distance between the convex lens 45 and the LED light source 44 can be changed through the driving mechanism 5.

[0065] In addition, it should be noted that the LED light source 44 of the present invention is a low-temperature light source and does not emit carbon emissions. Existing searchlights basically use xenon bulbs, with bulb powers ranging from 1000W to 3-5000W. The temperature inside the bulb exceeds 200° during operation, and the lifespan is generally only 500 hours. The operating temperature of the LED light source 44 used in the present invention can be controlled below 60°, and the light source lifespan exceeds 10,000 hours. The irradiation distance of the 400W lamp of the present invention far exceeds the focusing irradiation distance of a 1000W xenon searchlight. Therefore, the lamp of the present invention can achieve the effect of energy saving and environmental protection.

[0066] This embodiment is described in detail by taking the change in the distance between the convex lens 45 and the LED light source 44 as an example.

[0067] The driving mechanism 5 is used to move the convex lens 45 to realize the synchronous zooming of multiple light sources, such as Figure 5 As shown, while the structure of Example 1 remains essentially unchanged, the light source fixing plate 42 is fixed along the lamp housing 3, meaning the LED light source 44 remains stationary. The spokes 422 above the light source fixing plate 42 are mounted above the light-emitting panel 41. The push arm of the drive mechanism 5 is lengthened and fixed to the structure above the light-emitting panel 41. At the same time, the electrical panel 43 is made movable, meaning it does not contact the inner wall of the lamp housing 3. When the drive mechanism 5 is pushed and pulled up and down, all the convex lenses 45 and the focusing tube 411 on the panel move up and down synchronously, completing the focusing of the light. This requires the addition of a protective glass 31 and a waterproof retaining ring at the front of the lamp, increasing both the cost and the weight of the lamp itself.

[0068] like Figure 5 As shown, the light-emitting panel 41 has several mounting holes, the number of which is the same as the number of convex lenses 45 . The convex lenses 45 are mounted on the mounting holes. A focusing tube 411 is also mounted on the mounting holes, and the convex lenses 45 are mounted on the light-emitting panel 41 through the focusing tube 411 .

[0069] The light-emitting panel 41 in this embodiment is not a translucent glass panel, but an opaque metal panel. Several mounting holes, preferably circular, are arranged in a regular pattern (at intervals). Each hole is secured with a convex lens 45, with the convex side facing outward. Above the convex lenses 45 is a corresponding light-collecting tube 411, corresponding to the number of convex lenses 45. Within the light-collecting tube 411 is an LED light source 44 with a reflector 46. This LED light source 44 is connected to the second light source mounting plate 42 above via a heat dissipation tube 47.

[0070] The focusing tube 411 of this embodiment has two functions: one is to direct the light source, that is, the emitted light can only be directed to the convex lens 45 in the front and cannot be deviated; the other is to gather the scattered light around the LED light source 44 to the convex lens 45.

[0071] like Figure 5 As shown, a heat dissipation tube 47 is fixedly provided below the light source fixing plate 42 , a reflector 46 is provided at the free end of the heat dissipation tube 47 , and the LED light source 44 is mounted on the reflector 46 .

[0072] In this embodiment, the light source fixing plate 42 is made of aluminum. Each LED light source 44 is equipped with a reflector 46 with an angle of approximately 150°, which converges scattered light from the periphery of the LED light source 44 toward the center. Behind the LED light source 44 is an aluminum alloy heat pipe 47, which is connected to the light source fixing plate 42. The center circular hole of the heat pipe 47 is routed to the top of the light source fixing plate 42 and connected to the upper battery 431. The diameter of the reflector 46 is slightly smaller than the inner diameter of the focusing tube 411 above the convex lens 45, facilitating the vertical movement of the LED light source 44 with the reflector 46 within the focusing tube 411.

[0073] like Figure 5 As shown, a fixed column 421 is provided in the center of the light-emitting panel 41, and a plurality of spokes 422 are fixed on the fixed column 421. Adjacent spokes 422 are arranged at equal intervals. One end of the spoke 422 is fixed on the fixed column 421, and the other end is fixed on the edge of the light-emitting panel 41. The bottom end of the driving mechanism 5 is installed on the fixed column 421.

[0074] A plurality of vertical rods 48 are provided in the lamp housing 3 . The top ends of the vertical rods 48 are fixedly connected to the electrical board 43 , and the free ends of the vertical rods 48 are connected to the light emitting panel 41 via linear bearings 481 .

[0075] This embodiment preferably includes four spokes 422, which extend (in a cross shape) to the edge of the light-emitting panel 41. When the drive mechanism 5 pushes and pulls the light-emitting panel 41 up and down, the four spokes 422 evenly apply force to the entire surface of the light-emitting panel 41, eliminating the problem of uneven force on the periphery due to force applied at the center. At the same time, four vertical rods 48 (metal tubes) pass through the light source fixing plate 42 and are fixedly connected to the light-emitting panel 41 and the electrical board 43. A linear bearing 481 is installed above each vertical rod 48 passing through the light-emitting panel 41. This ensures that the light-emitting panel 41 will not generate any resistance or shift in any direction when pushed and pulled up and down by the drive mechanism 5. It also ensures that the operation of the internal drive mechanism 5 will not be affected in any way regardless of the direction in which the lamp is irradiated.

[0076] That is, the four spokes 422 of this embodiment divide the light-emitting panel 41 into four areas, and the four vertical rods 48 plus four linear bearings 481 further define these four areas, making them more stable. The drive mechanism 5 fixed at the center position below the electrical panel 43 can easily pull a surface (i.e., the light-emitting panel 41) with a single point. Each LED light source 44 installed below the light source fixing plate 42 is pushed and pulled up and down by the drive mechanism 5 in the focusing tube 411 fixed above the corresponding light-emitting panel 41, and the convex lens 45 moves up and down at the same time, that is, multiple LED light sources 44 can be simultaneously and synchronously focused on the same plane, ensuring that the light emitted by the lamp is uniform as a whole, and there will be no phenomenon of bright in the middle and weak around, or the aperture being defective. The distance the convex lens 45 moves up and down is consistent with the travel of the drive mechanism 5.

[0077] The key point of this utility model is to use the driving mechanism 5 to drive the multiple convex lenses 45 to move synchronously in the same plane to achieve light zooming, and the light emission is uniform, without strong or weak light spots. Through zooming, the lamp can achieve large-area floodlighting, as well as localized area projection lighting, until a light column is formed to achieve spotlighting. It truly embodies the function that a searchlight should have, which can realize the exploration and pursuit of target areas through zooming to adjust the high and low beam.

[0078] It should be noted that the driving mechanism 5 of the present invention is preferably an electric push rod, including one electric push rod, and does not exclude the use of multiple electric push rods, such as using three, distributed in a triangle (three points determine a plane), etc. Similarly, the electric push rod is not the only zoom driving means, and other driving mechanisms 5 can also realize the movement between the LED light source 44 and the convex lens 45, such as an electric slide, etc. The "several" LED light sources 44 referred to in the present invention are synchronously zoomed on the same plane, that is, no less than 3 LED light sources 44 (including the moving convex lens 45), and there is no limit to more than three. The power of each LED light source 44 is not limited, that is, the overall power of the lamp is not limited. The control mode of the present invention is not limited. The rotation mode of the lamp is not limited. The present invention can be built-in or externally mounted with other electrical equipment, such as cameras, infrared lamps, infrared rangefinders, etc., which can further expand the field of use. The extension and expansion of the lamp function does not affect the protection of the present invention.

[0079] like Figure 5 As shown, a fan 49 is provided below the electrical panel 43 . The fan 49 includes two fans, which can quickly dissipate the heat generated by the LED light source 44 toward the lamp housing 3 .

[0080] like Figure 12-14 As shown, a battery 431 and an electrical module 432 are provided above the electrical panel 43. The battery 431 provides power to the LED light source 44, and the electrical module 432 is electrically connected to the LED light source 44 and the drive mechanism 5. The electrical module 432 is connected to an external power supply interface 433, which includes a battery 431 control module and a drive mechanism 5 control module. The battery 431 control module is electrically connected to the battery 431 and controls the charging process of the battery 431 through the battery 431 control module, while the drive mechanism 5 control module is electrically connected to the drive mechanism 5 and is used to control the lifting and lowering of the drive mechanism 5, thereby driving the light source fixing plate 42 to lift and lower, and further driving the LED light source 44 to lift and lower.

[0081] The present invention uses electricity in two ways: 1. with an external power source; 2. with a built-in battery 431. The present invention also offers two control modes: 1. wireless control via a remote control; 2. manual control via a switch installed on the lamp housing 3, bracket 2. The lamp can be rotated in two ways: 1. manually controlled. This means a flat bearing is provided between the bracket 2 and the fixed chassis. Simply pushing the bracket 2 illuminates, explores, and tracks the desired direction or area. 2. The fixed chassis of the lamp is a pan-tilt type with an additional head-shaking mechanism. The up / down and left / right rotation of the lamp can be controlled via a remote control or backstage.

[0082] The utility model has a wide range of uses. 1. As mentioned above, its luminous effect is better than that of ordinary lighting fixtures, and it can be used in all fields such as industry, agriculture, national defense, and police work, that is, all places where lighting fixtures are used. 2. Its unique zoom function enables the light to shine farther, and the arbitrary adjustment of high and low beams further expands the scope of use of this lamp, such as use in airports, ports, bases, ships, lighthouses, etc. 3. Its zoom program can be synchronized with the zoom program of the onboard camera, that is, the camera can see clearly wherever the light shines, and can capture and record everything happening in the illuminated area in a timely manner. The camera can be used to bring ultra-distant targets that cannot be seen by the naked eye closer for identification. 4. The design of the built-in battery 431 enables this lamp to work normally for a long time without an external power supply, and can be used as a mobile light source. Such as emergency rescue, temporary on-site lighting, drone-mounted for night pipeline and road and bridge inspections, border patrols, etc.

[0083] In the description of the present invention, it should be noted that, unless otherwise specified, "plurality" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings and are intended solely for the convenience of describing the present invention and to simplify the description. They do not indicate or imply that the devices or components referred to must have a specific direction, be constructed, or operate in a specific direction, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0084] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0085] The above description is merely a specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A variable focus LED searchlight, comprising a base, a bracket and a light emitting mechanism, wherein the bracket is mounted on the base, and the light emitting mechanism is mounted on the bracket, characterized in that: The light emitting mechanism includes an LED light source and a convex lens. The LED light source and the convex lens each include a plurality of convex lenses, and the number of the LED light source and the convex lenses is the same. The convex lens is arranged in the irradiation direction of the LED light source, and the relative distance between the convex lens and the LED light source can be changed.

2. The variable focus LED searchlight according to claim 1, characterized in that: The relative distance between the convex lens and the LED light source may change, including that the distance between the LED light source and the convex lens changes, or that the distance between the convex lens and the LED light source changes.

3. The variable focus LED searchlight according to claim 2, characterized in that: The light-emitting mechanism includes a lamp housing, a light-emitting panel, a light source fixing plate, an electrical board and a driving mechanism. The light-emitting panel, the light source fixing plate and the electrical board are sequentially installed in the lamp housing from bottom to top. The convex lens is arranged on the light-emitting panel, and the LED light source is arranged on the light source fixing plate. One end of the driving mechanism is fixed below the electrical board, and the other end is connected to the light source fixing plate or the light-emitting panel.

4. The variable focus LED searchlight according to claim 3, characterized in that: A heat dissipation tube is fixedly provided below the light source fixing plate, a reflector is provided at the free end of the heat dissipation tube, and the LED light source is mounted on the reflector.

5. The variable focus LED searchlight according to claim 3, characterized in that: The light emitting panel is provided with a plurality of mounting holes, the number of the mounting holes being consistent with the number of the convex lenses, and the convex lenses are mounted on the mounting holes.

6. The variable focus LED searchlight according to claim 5, characterized in that: A focusing tube is also installed on the installation hole, and the convex lens is installed on the light-emitting panel through the focusing tube.

7. The variable focus LED searchlight according to claim 3, characterized in that: A fixing column is provided in the center of the light source fixing plate, and a plurality of spokes are fixed on the fixing column. Adjacent spokes are arranged at equal intervals. One end of the spoke is fixed on the fixing column, and the other end is fixed to the edge of the light source fixing plate. The bottom end of the driving mechanism is provided on the fixing column.

8. The variable focus LED searchlight according to claim 3, characterized in that: A plurality of vertical rods are provided in the lamp housing, the top ends of the vertical rods are fixedly connected to the light source fixing plate, and the free ends of the vertical rods are connected to the light source fixing plate or the light emitting panel via linear bearings.

9. The variable focus LED searchlight according to claim 3, characterized in that: A fan is provided below the electrical panel.

10. The variable focus LED searchlight according to claim 3, characterized in that: A battery and an electrical module are provided above the electrical panel. The battery provides power to the LED light source. The electrical module is electrically connected to the LED light source and the driving mechanism.

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