Light-emitting assembly with adjustable light beam angle and searchlight

Abstract

The invention discloses a light-beam-angle-adjustable light-emitting assembly and a searchlight. The light-beam-angle-adjustable light-emitting assembly comprises a connecting frame, a light source assembly hinged to the connecting frame and a transmission mechanism fixed to the connecting frame. The light source assembly comprises a first light source assembly and a second light source assembly which are symmetrically hinged to one side of the connecting frame. An output shaft of the transmission mechanism is fixedly provided with a thrust rod; two ends of the first connecting rod are respectively hinged with the thrust rod and the first light source assembly; two ends of the second connecting rod are respectively hinged with the thrust rod and the second light source assembly; the output shaft drives the thrust rod to rotate, and then the first connecting rod and the second connecting rod synchronously drive the first light source assembly and the second light source assembly to rotate around respective hinge shafts, so that adjustment of the light beam angle is achieved. Through the hinged arrangement of the connecting frame and the light source assemblies and the arrangement of the connecting rod mechanism between the transmission mechanism and the light source assemblies, the two light source assemblies are synchronously driven to rotate so as to adjust the light beam angle, the light beam adjusting structure of the light-emitting assembly is simplified, and operation is more convenient.

Description

Technical Field

[0001] The present invention relates to the technical field of searchlights, and in particular to a light-emitting component with adjustable beam angle and a searchlight. Background Art

[0002] Searchlights are generally used for long-range illumination and are widely used in various outdoor environments, such as sports venues, search and rescue scenarios, and ship navigation. In particular, in the field of ship lighting, special requirements are imposed on searchlights to enhance navigation safety. For example, the Suez Canal authorities stipulate that the light source of Suez Canal searchlights can be either a single beam or two independent beams that can be adjusted horizontally to achieve an angle of ≥5 degrees, each with a darkening angle of 0-10 degrees. The single beam illumination must provide an illumination of ≥1lx at a distance of 1800m. Conventional Suez Canal searchlights typically use halogen tungsten lamps as their light source. To meet these optical requirements, the light source power reaches as high as 3000 watts, resulting in high power consumption and low light efficiency. In particular, beam angle adjustment typically involves adjusting the reflector while keeping the light source stationary. This complex beam adjustment mechanism makes operation inconvenient. Summary of the Invention

[0003] The object of the present invention is to provide a light-emitting assembly with adjustable beam angle and a searchlight, optimize the beam adjustment structure of the light-emitting assembly, and facilitate operation.

[0004] In order to solve the above technical problems, an embodiment of the present invention provides a technical solution as follows: a light-emitting component with adjustable beam angle, comprising: a connecting frame, a light source component hinged to the connecting frame and a transmission mechanism fixed to the connecting frame; the light source component comprises a first light source component and a second light source component symmetrically hinged on one side of the connecting frame; the transmission mechanism comprises an output shaft and an input shaft, and the output shaft is fixed with a thrust rod; a first connecting rod, one end of which is hinged to the thrust rod and the other end is hinged to the first light source component; a second connecting rod, one end of which is hinged to the thrust rod and the other end is hinged to the second light source component; wherein, when the input shaft drives the output shaft to rotate, the output shaft drives the thrust rod to rotate, and then synchronously drives the first light source component and the second light source component to rotate around their respective hinge axes through the first connecting rod and the second connecting rod to achieve adjustment of the beam angle.

[0005] Furthermore, the thrust rod includes a first push rod and a second push rod respectively fixed to both ends of the output shaft, wherein the first push rod is hinged to the first connecting rod, and the second push rod is hinged to the second connecting rod.

[0006] Further, the thrust rod is an integral piece, comprising a first end hinged with the first connecting rod and a second end hinged with the second connecting rod, and the thrust rod is arranged at one end or both ends of the output shaft.

[0007] Further, the connecting frame is U-shaped, comprising a bottom plate and two side plates arranged on the same side of the bottom plate perpendicularly, and the first light source assembly and the second light source assembly are hinged perpendicularly between the two side plates.

[0008] Further, the first light source assembly and the second light source assembly each comprise a semicircular heat dissipation plate, a LED lamp group fixed on the heat dissipation plate, and a mounting plate arranged at a straight end of the heat dissipation plate; wherein the mounting plate is hinged with the side plate of the connecting frame through a thrust bearing.

[0009] Further, the transmission mechanism is a worm gear reducer, and the input shaft is perpendicular to the output shaft.

[0010] Further, the output shaft end is provided with a limiting piece corresponding to the thrust rod, the limiting piece is provided with a limiting groove towards the thrust rod, the thrust rod is accommodated in the corresponding limiting groove, and in the rotating direction of the thrust rod, the limiting groove side wall stops the thrust rod to limit the rotating angle range of the first light source assembly and the second light source assembly.

[0011] Further, the output shaft is fixedly connected with an adjusting wheel, and the adjusting wheel is used for manually driving the input shaft to rotate.

[0012] Further, the light source assembly has the following states: Single-beam state: the plane included angle between the first light source assembly and the second light source assembly is 180°, and the light beams formed by the two are combined into a single-beam, and the horizontal opening angle of the single-beam is greater than or equal to 5°; Double-beam crossing state: the first light source assembly and the second light source assembly are rotated towards each other, the light beams of the two cross each other, the horizontal opening angle of each light beam is greater than or equal to 5°, and the included angle of the dark area between the two light beams is greater than 0° and less than or equal to 10°; Double-beam separation state: the first light source assembly and the second light source assembly are rotated away from each other, and the light beams of the two are separated and irradiated in different directions.

[0013] In order to solve the technical problems proposed in the application, the application further provides a searchlight, comprising a lamp cylinder and a support seat rotationally connected to the outer wall of the lamp cylinder, the lamp cylinder is provided with any one of the above-mentioned light beam angle adjustable light emitting assemblies, and the connecting frame of the light beam angle adjustable light emitting assembly is connected with the inner wall of the lamp cylinder in the vertical direction.

[0014] The light-beam angle adjustable lighting assembly and searchlight provided by the present invention are different from the technical solutions of adjusting the light beam angle by adjusting the reflector in the prior art. By means of the first light source assembly and the second light source assembly hinged on the connecting frame, the transmission mechanism fixed to the connecting frame, and the arrangement of the first connecting rod and the second connecting rod between the transmission mechanism and the first light source assembly and the second light source assembly, when the input shaft drives the output shaft to rotate, the first connecting rod and the second connecting rod synchronously drive the first light source assembly and the second light source assembly to rotate to adjust the light beam angle, thereby simplifying the light beam adjustment structure of the lighting assembly and making it more convenient to operate. In particular, by using a thrust bearing to form a rotational connection between the first light source assembly and the second light source assembly and the connecting frame, it is possible to better provide stable axial support for the light source assembly and increase the overall stability of the light-beam angle adjustable lighting assembly. By setting the LED lamp group as the light source, compared with the halogen tungsten lamp as the light source in the prior art, the power is reduced, the service life of the light source assembly is increased, and it is more efficient, energy-saving and environmentally friendly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] One or more embodiments are exemplarily illustrated by pictures in the corresponding drawings. These exemplifications do not constitute limitations on the embodiments. Elements with the same reference numerals in the drawings represent similar elements. Unless otherwise stated, the figures in the drawings do not constitute proportional limitations.

[0016] Figure 1 Schematic diagram of the three-dimensional structure of the light-emitting component with adjustable beam angle in an embodiment of the present invention; Figure 2 This is a schematic diagram of the three-dimensional structure of a light source assembly in an embodiment of the present invention; Figure 3 Schematic diagram of the structure of a light-emitting assembly with adjustable beam angle in single beam state according to an embodiment of the present invention; Figure 4 Schematic diagram of the structure of the double-beam intersection state of the light-emitting assembly with adjustable beam angle in an embodiment of the present invention; Figure 5 Schematic diagram of the structure of the light-emitting assembly with adjustable beam angle in the dual-beam separation state in an embodiment of the present invention; Figure 6 This is a schematic diagram of the three-dimensional structure of the adjustment component in an embodiment of the present invention; Figure 7 This is a schematic diagram of the structure of the combination of the first push rod, the second push rod and the output shaft in one embodiment of the present invention; Figure 8 This is a schematic structural diagram of another embodiment of the present invention in which an integrated push rod is disposed at one end of the output shaft; Figure 9 This is a schematic structural diagram of another embodiment of the present invention in which integrated push rods are arranged at both ends of the output shaft; Figure 10This is a schematic diagram of the overall structure of a searchlight in an embodiment of the present invention; Figure 11 Schematic diagram of the rear-end viewing angle structure of a searchlight in an embodiment of the present invention; Figure 12 Schematic diagram of the light beam line in the single-beam state of the light source assembly in an embodiment of the present invention; Figure 13 Schematic diagram of the light beam lines in the dual-beam crossing state of the light source assembly in an embodiment of the present invention.

[0017] Explanation of the accompanying drawings: 10, light source assembly; 101, LED lamp group; 11, first light source assembly; 12, second light source assembly; 20, heat sink; 21, mounting plate; 22, bearing; 30, connecting frame; 31, side panel; 32, bottom panel; 40, adjustment assembly; 41, transmission mechanism; 411, input shaft; 412, output shaft; 42, mounting seat; 43, first connecting rod; 44, second connecting rod; 45, limiting member; 451, limiting groove; 46, thrust rod; 461, first push rod; 462, second push rod; 463, first end; 464, second end; 47, adjusting wheel; 100, lamp tube; 200, support seat; 201, pitch angle locking mechanism; 202, horizontal angle locking mechanism. DETAILED DESCRIPTION

[0018] To make the objectives, technical solutions, and advantages of the present invention more apparent, various embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, those skilled in the art will appreciate that many technical details are provided in various embodiments of the present invention to facilitate a better understanding of the present application. However, even without these technical details and the various variations and modifications based on the following embodiments, the technical solutions claimed in the claims of this application can be implemented.

[0019] It should be noted that if the embodiments of the present application involve directional indications (such as up, down, left, right, front, back, etc.), such directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0020] like Figure 1 、 6As shown, one embodiment of the present invention relates to a light-emitting component with adjustable beam angle, including a hinged light source component 10 and a connecting frame 30, and an adjustment component 40 fixed on the connecting frame 30, the light source component 10 includes a symmetrically arranged first light source component 11 and a second light source component 12, and the two are symmetrically hinged on the same side of the connecting frame 30 so as to be able to move relative to each other; the adjustment component 40 is fixed on the other side of the connecting frame 30, including a transmission mechanism 41 and a connecting rod mechanism, the transmission mechanism 41 includes an input shaft 411 and an output shaft 412, and a thrust rod is fixed to the end of the output shaft; the connecting rod mechanism includes a first connecting rod 43 and a second connecting rod 44; wherein, one end of the first connecting rod 43 is hinged to the thrust rod 46, and the other end is hinged to the first light source component 11; one end of the second connecting rod 44 is hinged to the thrust rod 46, and the other end is hinged to the second light source component 12. By automatically or manually adjusting the input shaft 411, the output shaft 412 is driven to rotate, and the output shaft drives the thrust rod 46 to rotate, thereby driving the first connecting rod 43 and the second connecting rod 44 to move, thereby synchronously driving the first light source assembly 11 and the second light source assembly 12 to rotate relative to each other around their respective hinge axes to adjust the beam angle. Preferably, the connecting frame 30 is U-shaped, including a base plate 32 and two side plates 31 arranged on the same side of the base plate 32, and the first light source assembly 11 and the second light source assembly 12 are vertically hinged between the two side plates 31. Preferably, the input shaft 411 is fixedly connected with an adjustment wheel 47 for manually driving the input shaft 411 to rotate. The setting of the adjustment wheel 47 can make it more convenient for the operator to manually adjust the light beam illumination angle and range of the light source assembly 10 to meet the illumination requirements.

[0021] like Figure 2As shown, in one embodiment, a light-emitting assembly with adjustable beam angle is provided. The light source assembly 10 is circular as a whole and consists of a semicircular first light source assembly 11 and a semicircular second light source assembly 12. The first light source assembly 11 and the second light source assembly 12 have the same structure. The structure is described by taking the first light source assembly 11 as an example. The first light source assembly 11 includes a semicircular heat sink 20 and an LED lamp group 101 fixedly arranged on one side of the heat sink 20. A mounting plate 21 is fixedly provided at the straight end of the heat sink 20. Preferably, a mounting seat 42 is fixedly provided on the heat sink 20. The first connecting rod 43 is hinged to the mounting seat 42, and the second connecting rod 44 is hinged to the mounting seat 42. The connecting frame 30 is U-shaped and includes a bottom plate 32 and two side plates 31 extending perpendicularly to the same side of the bottom plate 32. The bottom plate 32 is arranged parallel to the mounting plate 21. The two axial ends of the mounting plate 21 are vertically hinged to the two side plates 31 of the connecting frame 30 through bearings 22. Preferably, the bearing 22 is a thrust bearing. Connecting mounting plate 21 and connecting bracket 30 via a thrust bearing provides stable axial support for light source assembly 10, enhancing the overall stability of the light-emitting assembly with adjustable beam angle. The use of LED lamp assembly 101 as the light source reduces power consumption compared to conventional halogen tungsten lamps, extending the lifespan of light source assembly 10. In one example, the power of light source assembly 10 was reduced from 3000 watts to 400 watts, achieving greater efficiency, energy conservation, and environmental protection.

[0022] In one embodiment, a light beam angle adjustable light emitting assembly is provided, wherein the transmission mechanism 41 is a worm gear reducer, which is fixed to the base plate 32 of the connecting frame 30 by fasteners, and the input shaft 411 and the output shaft 412 are arranged perpendicularly. In one example, the input shaft 411 is perpendicular to the base plate 32, and the output shaft 412 is parallel to the base plate 32. The worm gear reducer has the advantages of a large transmission ratio, a compact structure, and maintenance-free, and also has a self-locking feature, which can ensure the stability of the transmission structure in a bumpy environment, and is conducive to maintaining the stability of the angle of the light beam irradiated by the light source assembly 10. Figure 3 、 6 As shown, in one example, a limit piece 45 corresponding to the thrust rod 46 is provided at the end of the output shaft 412 of the transmission mechanism 41, and the limit piece 45 is provided with a limit groove 451 toward the thrust rod 46. The thrust rod 46 is accommodated in the corresponding limit groove 451. In the rotation direction of the thrust rod 46, the thrust rod 46 is stopped by the side wall of the limit groove 451 to limit the rotation angle range of the first light source assembly 11 and the second light source assembly 12, thereby effectively controlling the adjustment range of their irradiation light beams.

[0023] like Figure 7As shown, in one embodiment, a light-emitting assembly with adjustable beam angle is provided. The thrust rod 46 includes a first thrust rod 461 disposed at the upper end of an output shaft 412 and a second thrust rod 462 disposed at the lower end of the output shaft 412. The first thrust rod 461 is hingedly connected to the first connecting rod 43, which is hingedly connected to the first light source assembly 11 via a mounting base 42. The second thrust rod 462 is hingedly connected to the second connecting rod 44, which is hingedly connected to the second light source assembly 12 via a mounting base 42. The structure in which the thrust rods 46 are disposed at both ends of the output shaft 412 ensures a more balanced force on the output shaft 412, which is beneficial to the stability of the transmission mechanism 41. In one example, the angle between the first thrust rod 461 and the second thrust rod 462 is 90°. Driven by the output shaft 412, the first thrust rod 461 and the second thrust rod 462 simultaneously apply a thrust or pull to the first connecting rod 43 and the second connecting rod 44, respectively.

[0024] like Figure 8-9 As shown, in one embodiment, a light beam angle adjustable light emitting assembly is provided, wherein the thrust rod 46 is an integral piece, comprising at least a first end 463 hinged to the first connecting rod 43 and a second end 464 hinged to the second connecting rod 44; Figure 8 As shown, the thrust rod 46 is provided at one end of the output shaft 412, wherein the first end 463 is connected to the first light source assembly 11 through the first connecting rod 43, and the second end 464 is connected to the second light source assembly 12 through the second connecting rod 44. The first connecting rod 43 and the second connecting rod 44 are provided on the same plane. During the adjustment of the beam angle, the forces on the first light source assembly 11 and the second light source assembly 12 can be kept balanced, which is beneficial to increase the service life of the light-emitting assembly with adjustable beam angle. In one example, the thrust rod 46 is an L-shaped integral part, and the angle between the first end 463 and the second end 464 is 90°. Figure 9 As shown, an integrated thrust rod 46 is provided at each end of the output shaft 412, thereby forming a dual-link structure. That is, the first light source assembly 11 is hingedly provided with two first connecting rods 43, and the second light source assembly 12 is hingedly provided with two second connecting rods 44. The dual-link structure can further improve the balance of force applied to the light source assembly 10, and can meet the beam angle requirements of a wider variety of light source assemblies 10.

[0025] like Figure 3-5 As shown, in one embodiment, a light beam angle adjustable light emitting assembly is provided. Driven by a transmission mechanism 41, a first connecting rod 43 and a second connecting rod 44 synchronously drive a first light source assembly 11 and a second light source assembly 12 to rotate toward or away from each other, so that the light source assembly has multiple states: Figure 3 、 12As shown, in the single beam state, the first light source assembly 11 and the second light source assembly 12 are arranged in the same plane, and the plane angle between the two is 180 degrees. The first light source assembly 11 and the second light source assembly 12 irradiate in parallel, and the light beams formed by the two are combined into a single beam. Preferably, the horizontal opening angle β of the single beam formed by the combination of the first light source assembly 11 and the second light source assembly 12 is ≥5°; Figure 4 、 13 As shown, in the dual-beam crossing state, the first light source assembly 11 and the second light source assembly 12 rotate toward each other, and the irradiation light beams of the two intersect, the horizontal opening angle α of each light beam is ≥5°, and the dark area angle between the light beams is γ. Under the action of the adjustment assembly 40, the size of the dark area angle between the two light beams can be adjusted within a certain range, preferably, 0<γ≤10°; in the dual-beam separation state, the first light source assembly 11 and the second light source assembly 12 rotate back to back, and the light beams of the two are separated and irradiated in different directions, thereby realizing lighting needs in multiple directions.

[0026] like Figure 10-11 As shown, in one embodiment, a searchlight is provided, comprising: a cylindrical lamp tube 100, a connecting frame 30 of the above-mentioned light beam angle adjustable light emitting component is fixed to the inner wall of the lamp tube 100 by fasteners, wherein the adjustment wheel of the light emitting component is exposed on the outside of the lamp tube 100 to facilitate angle adjustment of the irradiation beam of the light source component 10; preferably, the connecting frame 30 is connected to the inner wall of the lamp tube 100 in a vertical direction, and the light source component 10 is slidably connected to the inner wall of the lamp tube 100 in a horizontal direction, which can provide vertical support force and ensure horizontal movement; combined with the use environment of the searchlight, the vertical vibration is the most common, therefore, the vertical fixed connection between the connecting frame 30 and the lamp tube 100 can effectively increase the seismic performance of the searchlight. In one example, the adjustment wheel 47 is exposed at the rear end of the lamp tube 100, which is away from the irradiation direction of the light source assembly 10, so as to facilitate the adjustment operation of the light source assembly 10 by the adjustment wheel 47; the support seat 200 is used to support the lamp tube 100 and is connected to the mounting base (not shown in the drawings), and is arranged as a U-shaped or C-shaped bracket, which is rotatably connected to the outer wall of the lamp tube 100. The lamp tube 100 is horizontally centered relative to the support seat 200, and the lamp tube 100 is rotated relative to the support seat 200 to achieve the adjustment of the pitch angle of the light-emitting assembly. The support seat is provided with a pitch angle locking mechanism 201 for locking the lamp tube 100 and the support seat 200; preferably, the support seat 200 is rotatably connected to the mounting base to achieve the horizontal rotation of the searchlight, and the support seat 200 is provided with a horizontal angle locking mechanism 202 for locking the support seat 200 and the mounting base.

[0027] During use, in the single-beam state, manually rotating the adjustment wheel 47 drives the input shaft 411 of the transmission mechanism 41 to rotate, and the output shaft 412 of the transmission mechanism 41 drives the thrust rod 46 to rotate, synchronously driving the first connecting rod 43 to rotate the first light source assembly 11, and the second connecting rod 44 to rotate the second light source assembly 12, so that the dark area angle between the light beams of the first light source assembly 11 and the second light source assembly 12 is adjusted within the range of 0-10 degrees. Reverse rotation of the adjustment wheel 47 synchronously pulls the first light source assembly 11 to rotate and the second light source assembly 12 to rotate away from each other, returning to the single-beam state. By continuing to rotate the adjustment wheel 47, the first light source assembly 11 is synchronously rotated and the second light source assembly 12 is rotated away from each other to a dual-beam separation state to meet different illumination requirements.

[0028] The light-beam angle-adjustable lighting assembly and searchlight provided by the present invention are different from the prior art technical solutions for adjusting the light beam angle by adjusting the reflector. The first light source assembly and the second light source assembly are hinged to the connecting frame, the transmission mechanism is fixed to the connecting frame, and the first connecting rod and the second connecting rod are arranged between the transmission mechanism and the first light source assembly and the second light source assembly. When the input shaft drives the output shaft to rotate, the first connecting rod and the second connecting rod synchronously drive the first light source assembly and the second light source assembly to rotate toward or away from each other to adjust the light beam angle, thereby simplifying the light beam adjustment structure of the lighting assembly and making it more convenient to operate. In particular, by using a thrust bearing to form a rotational connection between the first light source assembly and the second light source assembly and the connecting frame, it is possible to better provide stable axial support for the light source assembly and increase the overall stability of the light-beam angle-adjustable lighting assembly. By using an LED lamp group as the light source, compared with the prior art halogen tungsten lamp as the light source, the power is reduced, the service life of the light source assembly is increased, and it is more efficient, energy-saving and environmentally friendly.

[0029] Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the definition of the claims.

Claims

1. A light-emitting component with adjustable beam angle, characterized in that: include: A connecting frame (30), a light source assembly (10) hinged to the connecting frame (30), and a transmission mechanism (41) fixed to the connecting frame (30); the light source assembly (10) includes a first light source assembly (11) and a second light source assembly (12) symmetrically hinged to one side of the connecting frame (30); the transmission mechanism (41) includes an output shaft (412) and an input shaft (411); the output shaft (412) is fixedly provided with a thrust rod (46); a first connecting rod (43), one end of which is hinged to the thrust rod (46) and the other end of which is hinged to the first light source assembly (11); a second connecting rod (44), one end of which is hinged to the thrust rod (46) and the other end of which is hinged to the second light source assembly (12); When the input shaft (411) drives the output shaft (412) to rotate, the output shaft (412) drives the thrust rod (46) to rotate, and then synchronously drives the first light source assembly (11) and the second light source assembly (12) to rotate around their respective hinge axes through the first connecting rod (43) and the second connecting rod (44), so as to achieve adjustment of the light beam angle.

2. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The thrust rod (46) includes a first push rod (461) and a second push rod (462) respectively fixed to both ends of the output shaft (412), wherein the first push rod (461) is hinged to the first connecting rod (43), and the second push rod (462) is hinged to the second connecting rod (44).

3. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The thrust rod (46) is an integral piece, comprising a first end (463) hinged to the first connecting rod (43) and a second end (464) hinged to the second connecting rod (44). The thrust rod (46) is arranged at one end or both ends of the output shaft (412).

4. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The connecting frame (30) is U-shaped and comprises a bottom plate (32) and two side plates (31) arranged perpendicular to the bottom plate (32) and on the same side; the first light source assembly (11) and the second light source assembly (12) are vertically hinged between the two side plates (31).

5. The light-emitting assembly with adjustable beam angle according to claim 4, characterized in that: The first light source assembly (11) and the second light source assembly (12) both comprise a semicircular heat sink (20), an LED lamp group (101) fixed on the heat sink (20), and a mounting plate (21) arranged at a straight end of the heat sink (20); wherein the mounting plate (21) is hinged to a side plate (31) of the connecting frame (30) via a thrust bearing.

6. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The transmission mechanism (41) is a worm gear reducer, and the input shaft (411) is perpendicular to the output shaft (412).

7. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The end of the output shaft (412) is provided with a limiting piece (45) corresponding to the thrust rod (46); the limiting piece (45) is provided with a limiting groove (451) facing the thrust rod (46); the thrust rod (46) is accommodated in the corresponding limiting groove (451); in the rotation direction of the thrust rod (46), the thrust rod (46) is stopped by the side wall of the limiting groove (451) to limit the rotation angle range of the first light source assembly (11) and the second light source assembly (12).

8. The light-emitting assembly with adjustable beam angle according to claim 1, characterized in that: The output shaft (412) is fixedly connected to an adjusting wheel (47), and the adjusting wheel (47) is used to manually drive the input shaft (411) to rotate.

9. The light-emitting assembly with adjustable beam angle according to any one of claims 1 to 8, characterized in that: The light source assembly (10) has the following states: Single beam state: the plane angle between the first light source assembly (11) and the second light source assembly (12) is 180°, and the light beams formed by the two are combined into a single beam, and the horizontal opening angle β of the single beam is ≥5°; Double-beam crossing state: the first light source assembly (11) and the second light source assembly (12) rotate towards each other, the light beams of the two light beams cross, the horizontal opening angle α of each light beam is ≥5°, and the dark area angle between the two light beams is 0<γ≤10°; Dual-beam separation state: the first light source assembly (11) and the second light source assembly (12) rotate in opposite directions, and the light beams of the two are separated and irradiated in different directions.

10. A searchlight comprising a lamp tube (100) and a support base (200) rotatably connected to the outer wall of the lamp tube (100), characterized in that: The lamp tube (100) is provided with a light-emitting assembly with adjustable beam angle according to any one of claims 1 to 9, and a connecting frame (30) of the light-emitting assembly with adjustable beam angle is connected to the inner wall of the lamp tube (100) in a vertical direction.

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