Variable spot led lens module with cam push rod mechanism

Abstract

The application discloses a variable spot LED lens module adopting a cam push rod mechanism and relates to the technical field of lighting equipment. The variable spot LED lens module comprises a shell, a lighting mechanism arranged at the rear side of the shell, and a variable light mechanism arranged at the front side of the shell. The variable light mechanism comprises a movable plate slidably connected to the shell, a movable block slidably connected to the movable plate, a moving seat rotatably connected to the movable block, a first lens fixed to the upper portion of the moving seat, a fixed plate fixed to the shell, a guide groove formed in the fixed plate, two channels symmetrically extended from the rear portion of the guide groove, and the moving seat and the guide groove in sliding fit. A rotating disc is rotatably connected to the bottom surface of the shell, a plurality of limiting rods are fixed to the rotating disc in a ring-shaped equidistant arrangement, and a rod groove in sliding fit with the limiting rods is formed in the two side walls of the front portion of the guide groove. The application can effectively reduce the dark area range of the lighting equipment when the lighting equipment is in a fan-shaped scanning mode, and greatly improves the illumination quality.

Description

Technical Field

[0001] This invention relates to the field of lighting equipment technology, and in particular to a variable spot LED lens module employing a cam pusher mechanism. Background Technology

[0002] High-power LED light sources have become the mainstream choice for lighting needs in most scenarios due to their advantages such as high luminous efficiency, long lifespan, compact size, and rapid response. Especially in nighttime patrols of large areas such as reservoirs and dams, the advantages of LEDs are highly adaptable to the needs of the corresponding scenarios. In addition, in order to adapt to the optical characteristics of LEDs and meet the requirements of long-distance projection, the LED lighting equipment used for patrols usually needs to be equipped with dedicated secondary optical lenses or lens modules to adapt to the terrain changes of the corresponding scenarios. Among them, LED lighting equipment used for nighttime water surface inspection also needs to be equipped with a driving structure to realize the swing of the LED lighting equipment, so that it can patrol a wider water surface during movement.

[0003] Existing swing-driven LED lighting equipment typically employs a lead screw or cam mechanism. When space on a vessel is limited and a swing mechanism is not readily available, handheld light sources are used for surface inspection. However, both methods rely on swinging to create a fan-shaped beam pattern. While the beam area remains constant when inspecting the waters on either side of the vessel, the required inspection distance increases. Due to the fixed beam angle, noticeable dark areas appear on the sides of the field of view, hindering thorough surface inspection. This necessitates increasing the vessel's patrol density to ensure adequate inspection, which is time-consuming, labor-intensive, and detrimental to efficient inspection. Therefore, we propose a variable beam LED lens module using a cam-puss mechanism. Summary of the Invention

[0004] The purpose of this invention is to solve the problem that in the prior art, there are obvious dark areas on both sides of the lighting equipment when it swings due to the limitation of the beam angle, which is not conducive to the efficient carrying out of inspection work. Therefore, this invention proposes a variable spot LED lens module with a cam push rod mechanism.

[0005] To achieve the above objectives, the present invention employs the following technology: a variable spot LED lens module using a cam push rod mechanism, comprising a housing, an illumination mechanism located on the rear side inside the housing, and a light-changing mechanism located on the front side inside the housing; the light-changing mechanism includes a movable plate slidably connected inside the housing, a movable block slidably connected inside the movable plate, a movable seat rotatably connected inside the movable block, a first lens fixed above the movable seat, a fixed plate fixed inside the housing, a guide groove formed on the fixed plate, two channels extending obliquely to both sides from the rear of the guide groove in a symmetrical structure, the movable seat slidingly engaging with the inside of the guide groove; a turntable rotatably connected to the front side of the bottom inner side of the housing, a plurality of limit rods arranged in a ring-shaped, equally spaced structure fixed on the turntable, rod grooves slidably engaging with the limit rods on both sides of the front part of the guide groove, only one limit rod being located inside the guide groove at any given time, and the limit rod located inside the guide groove corresponding to the opening end of one side of the channel of the guide groove; a drive mechanism for driving the movable plate to reciprocate back and forth is provided on one side of the movable plate.

[0006] As a further description of the above technical solution: when the moving seat moves backward, it presses against the limiting rod. The two channels at the rear of the guide groove are both set with an arc-shaped structure. The front of the guide groove is provided with a pressing block that presses against the front wall of the moving seat. The front wall of the guide groove is provided with a block groove that is inserted and matched with the pressing block. A compression spring is fixed between the front wall of the pressing block and the front wall of the block groove. A guide rod is fixed on the bottom surface of the pressing block. The top surface of the turntable is provided with multiple arc-shaped grooves arranged in a ring with equal spacing. The guide rod slides with the arc-shaped grooves.

[0007] As a further description of the above technical solution: a connecting groove is provided between two adjacent arc-shaped grooves, the guide rod slides in the connecting groove, the connecting groove is perpendicular to the axis of the turntable, a bottom groove is provided on the inner side of the bottom surface of the connecting groove, and a limit block is connected inside the bottom groove by a support spring. The side of the limit block away from the axis of the turntable is a sloping structure, and the side of the limit block near the axis of the turntable is an arc-shaped structure with the curvature of the inner wall of the arc-shaped groove.

[0008] As a further description of the above technical solution: a ratchet is coaxially sleeved in the middle of the turntable, and an annular groove that cooperates with the rotation of the ratchet is opened in the interlayer of the bottom surface of the outer shell. A pawl that meshes with the ratchet is hinged inside the annular groove, and a compression spring is fixed between the pawl and the inner wall of the annular groove.

[0009] As a further description of the above technical solution: a through groove is provided in the middle of the movable block to rotate with the upper end of the movable seat. A guide ring is coaxially fixed inside the through groove. The front and rear sides of the guide ring are connected and fixed to the inner wall of the through groove through connecting rods. The guide ring is slidably connected to the movable seat. A return spring is sleeved on the guide ring at the gap between the connecting rod and the side wall of the movable seat.

[0010] As a further description of the above technical solution: the lighting mechanism includes a fixed base, and a second lens and an LED light are respectively provided on the front and rear sides above the fixed base. Two clamping plates are symmetrically fitted on both the second lens and the first lens. The two clamping plates are connected and fixed to each other by screws. The two clamping plates located on the lower side are respectively connected and fixed to the top surface of the movable base and the top surface of the fixed base.

[0011] As a further description of the above technical solution: the drive mechanism includes a motor that is fixedly connected to the inner wall of the housing, a rotating shaft that is fixedly connected to the output end of the motor, a bidirectional threaded groove is provided on the rotating shaft, a shaft groove that slides with the rotating shaft is provided on the movable plate, and a guide block that slides with the bidirectional threaded groove is fixedly provided on the inner wall of the shaft groove.

[0012] As a further description of the above technical solution: a circular groove is provided on the front wall of the outer shell, and two clamping plates located on the front side are inserted and matched with the rear of the circular groove. A plate groove is provided below the circular groove to be inserted and matched with the movable plate.

[0013] As a further description of the above technical solution: a fixed ring is slidably connected to the front opening end of the circular groove, a glass plate is embedded in the middle of the fixed ring, a plurality of sliding rods are uniformly fixed on the rear wall of the fixed ring, the sliding rods are slidably connected to the front wall of the outer shell, and a tension spring is fixed between the sliding rods and the inner wall of the outer shell.

[0014] As a further description of the above technical solution: an inspection port is provided in the middle of the outer wall on one side of the housing, and a movable door is connected to the inspection port by screws. A heat dissipation window is embedded in the middle of the movable door, and a base is fixed to the lower part of the housing.

[0015] In summary, the beneficial effects of this invention, which employs a cam-pull mechanism to create a variable beam LED lens module, are as follows: The invention includes a beam-changing mechanism. By driving the beam-changing mechanism, the first lens in the device can reciprocate while simultaneously undergoing angle deflection. This angle deflection creates an angle between the optical axes of the first and second lenses, causing the LED beam to deflect as it passes through the first lens. This alters the illumination angle of the device. Furthermore, the reciprocating motion reduces the distance between the first and second lenses, thereby changing the combined focal length of the lens module. This allows the beam angle to widen. Finally, through the coordinated action of these actions, the lighting device can move closer to the light source as the illumination angle swings. The larger the beam angle near the edge, the better. This not only solves the problem of dark areas at the edges of the light sweeping surface during inspection, but also does not affect the illumination quality in the forward direction. It effectively expands the inspection range, efficiently scans the surrounding environment, reduces patrol density, and prioritizes navigation and the main warning direction, ensuring the stable navigation of the inspection vessel. Furthermore, through this integrated design, the illumination angle can be achieved simply by slightly rotating the first lens. Compared to mechanically controlled swing lamps, this structure greatly reduces space occupation, allowing the device to be used in more scenarios and greatly improving its flexibility and applicability. In addition, by moving the first lens forward in conjunction with the sliding glass plate, the glass plate can be intermittently vibrated and cleaned, reducing the adhesion of dust and preventing phototactic insects from crawling on it, further ensuring the illumination quality. Attached Figure Description

[0016] Figure 1 An overall schematic diagram according to the present invention is shown; Figure 2 A schematic diagram of the interior of the housing according to the present invention is shown; Figure 3 A schematic cross-sectional view of the casing according to the present invention is shown; Figure 4 A schematic diagram of the interior of the annular groove according to the present invention is shown; Figure 5 A cross-sectional schematic diagram of the movable plate according to the present invention is shown; Figure 6 A schematic diagram of the decomposed active block according to the present invention is shown; Figure 7 A schematic diagram showing the connection relationship between the movable base and the movable block according to the present invention is shown; Figure 8 A schematic diagram showing the positional relationship between the turntable and the fixed plate according to the present invention is shown; Figure 9 A schematic diagram of the fixing plate according to the present invention is shown; Figure 10A schematic diagram of the turntable according to the present invention is shown; Figure 11 The present invention is shown Figure 10 Enlarged view of point A in the middle; Figure 12 A schematic diagram showing the state where the first lens is located at the rear end according to the present invention is shown; Figure 13 A schematic diagram of the interior of the housing is shown when the first lens is located at the rearmost end according to the present invention.

[0017] Legend: 10. Outer shell; 101. Ring groove; 102. Plate groove; 103. Inspection port; 11. Circular groove; 12. Fixing ring; 121. Glass plate; 13. Slide rod; 14. Tension spring; 15. Sliding door; 151. Ventilation window; 16. Base; 20. Lighting mechanism; 21. Mounting base; 22. Second lens; 23. LED light; 24. Clamping plate; 30. Optical adjustment mechanism; 31. Movable plate; 311. Shaft groove; 312. Guide block; 32. Movable block; 321. Through groove; 322. Guide ring; 323. Connecting rod; 324. Return spring; 33. Moving seat; 34. First lens; 35. Fixed plate; 351. Guide groove; 352. Rod groove; 353. Block groove; 36. Pressing block; 361. Compression spring; 362. Guide rod; 40. Turntable; 401. Arc groove; 402. Connecting groove; 403. Bottom groove; 41. Limiting rod; 42. Support spring; 43. Limiting block; 44. Ratchet; 45. Pad; 46. Compression spring; 50. Drive mechanism; 51. Electric motor; 52. Rotating shaft; 521. Bidirectional threaded groove. Detailed Implementation

[0018] The following will describe clearly and completely a variable spot LED lens module using a cam pusher mechanism according to the embodiments of the present invention, with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] like Figures 1-13As shown, the present invention provides a variable spot LED lens module with a cam push rod mechanism, including a housing 10. An inspection port 103 is provided in the middle of the outer wall of one side of the housing 10. A movable door 15 is connected to the inspection port 103 by screws. A heat dissipation window 151 is embedded in the middle of the movable door 15. A base 16 is fixed at the lower part of the housing 10. An annular structure is fixed on the base 16. The annular structure is composed of two separable U-shaped fixing frames. The outer wall of the housing 10 is provided with a groove that can be inserted and matched with the corresponding fixing frame. This structure can be used to help the staff fix the device on the ship or other use position. The housing 10 and the internal structure of the housing 10 can also be maintained or replaced separately by separating the two.

[0020] A light-changing mechanism 30 is provided on the front side of the interior of the outer casing 10. The light-changing mechanism 30 includes a movable plate 31 slidably connected inside the outer casing 10. The movable plate 31 has an L-shaped structure. A drive mechanism 50 is provided on one side of the movable plate 31 to drive the movable plate 31 to move back and forth. The drive mechanism 50 includes a motor 51 that is fixedly connected to the inner wall of the outer casing 10. A rotating shaft 52 is coaxially fixedly connected to the output end of the motor 51. A bidirectional threaded groove 521 is provided on the rotating shaft 52. A shaft groove 311 that slides with the rotating shaft 52 is provided on the movable plate 31. A guide block 312 that slides with the bidirectional threaded groove 521 is fixedly provided on the inner wall of the shaft groove 311. By driving the rotating shaft 52 to rotate through the motor 51, the guide block 312 is squeezed through the bidirectional threaded groove 521 to drive the movable plate 31. During this period, the movable plate 31 will continuously move back and forth. The bottom surface of the movable plate 31 is in sliding contact with the bottom surface of the inner side of the outer casing 10, so the movable plate 31 will not rotate with the rotating shaft 52.

[0021] A movable block 32 is slidably connected inside the movable plate 31. The movable plate 31 has a groove that slides with the movable block 32 at a position relative to the movable block 32. The front and rear walls of the movable block 32 and the front and rear walls of the groove on the movable plate 31 are both convex arc surface structures. This design is used to limit the position of the movable block 32 so that it will not produce displacement in the vertical direction when it slides left and right. A movable seat 33 is rotatably connected inside the movable block 32. The bottom surface of the movable seat 33 slides in contact with the bottom surface of the outer shell 10. A first lens 34 is fixed above the movable seat 33. The first lens 34 is a concave lens.

[0022] An illumination mechanism 20 is provided inside the rear side of the housing 10. The illumination mechanism 20 includes a fixed base 21. A second lens 22 and an LED lamp 23 are respectively provided on the front and rear sides above the fixed base 21. The second lens 22 is a convex lens. The function of the second lens 22 is to efficiently collect the divergent light emitted by the LED lamp 23 and initially correct the divergent light into a nearly parallel beam, thereby improving the light output quality and ensuring the stability of the basic light effect. The first lens 34 will help change the angle of the light source and adjust the beam angle from narrow to wide during its movement. The concave lens itself can partially cancel the chromatic aberration and spherical aberration generated by the fixed convex lens, which helps the device to output a cleaner light spot.

[0023] Two clamping plates 24 are symmetrically fitted on both the second lens 22 and the first lens 34. The two clamping plates 24 are connected and fixed to each other by screws. This structure makes it convenient for staff to replace or maintain the two lenses. The two clamping plates 24 located on the lower side are respectively connected and fixed to the top surface of the movable seat 33 and the top surface of the fixed seat 21.

[0024] A fixing plate 35 is fixed inside the outer casing 10. A guide groove 351 is provided on the fixing plate 35. Two channels extend obliquely to both sides from the rear of the guide groove 351 in a symmetrical structure. The fixing plate 35 and the guide groove 351 are both in a herringbone structure. The movable seat 33 slides in the guide groove 351. The front of the guide groove 351 is the same width as the movable seat 33. The width of the middle part is larger as it gets closer to the opening of the two channels. The width of the two channels is the same as that of the movable seat 33. The rear end of the movable seat 33 is also set in a semi-cylindrical shape to facilitate the movable seat 33 to smoothly enter the corresponding channel during the backward movement.

[0025] The movable block 32 has a through groove 321 in the middle that rotates with the upper end of the movable seat 33. A guide ring 322 is coaxially fixed inside the through groove 321. The front and rear sides of the guide ring 322 are connected and fixed to the inner wall of the through groove 321 by connecting rods 323. The connecting rods 323 are used to fix the guide ring 322 and to limit the deflection angle of the movable seat 33. The guide ring 322 is slidably connected to the movable seat 33. A return spring 324 is sleeved on the guide ring 322 at the gap between the connecting rods 323 and the side wall of the movable seat 33. The deflected movable seat 33 will immediately return to its original position after the external force is removed.

[0026] A turntable 40 is rotatably connected to the front of the bottom inner side of the outer casing 10. Multiple limiting rods 41 arranged in a ring-shaped, equally spaced structure are fixed on the turntable 40. The front two side walls of the guide groove 351 are each provided with a rod groove 352 that slides with the limiting rods 41. The limiting rods 41 can enter the guide groove 351 as the turntable 40 rotates. Only one limiting rod 41 is located inside the guide groove 351 at any given time, and the limiting rod 41 located inside the guide groove 351 corresponds to the opening end of one side of the channel of the guide groove 351. When the moving seat 33 moves backward, it... The limiting rod 41 makes a pressing contact, thus preventing the moving seat 33 from entering the blocked channel. The reaction force causes the moving seat 33 to rotate and enter the channel on the other side. Both channels at the rear of the guide groove 351 are arc-shaped, so the moving seat 33, guided by the inner wall of the channel, moves backward and deflects synchronously. This allows the moving seat 33 to move backward and deflect along with the first lens 34. The rearward movement of lens 34 changes its distance from the second lens 22, thereby changing the combined focal length of the lens module. This allows the beam angle to be widened. On the other hand, the angle of the first lens 34 deflects. During the deflection, the optical axis of the first lens 34 and the optical axis of the second lens 22 will form an angle, which will cause the beam of the LED light 23 passing through the second lens 22 to deflect, changing the illumination angle of the device. Through the coordination of the above actions, the second lens 22 can widen the beam angle while changing the beam illumination angle. This not only solves the problem of dark areas at the edge of the light sweeping surface during inspection, but also makes the device easier to install than mechanically oscillating light sources, without the need to prepare sufficient installation and oscillation space, effectively improving the applicability of the device. In addition, since the forward and backward movement and the angle deflection are completed synchronously, the change of the beam illumination angle and the change of the beam angle are also carried out synchronously and gradually. This achieves the effect of a larger beam angle closer to the illumination edge, which is more in line with the characteristics of the fan-shaped illumination surface coverage at the bow of the ship.

[0027] It should be noted that when the illumination angle is in the forward direction, the beam angle does not change in order to improve the clarity of the observation of the water ahead. This is because the situation in the water ahead is not only within the scope of the inspection, but also has a great impact on the ship's course. This design is mainly to prioritize navigation and the main warning direction, and secondly to efficiently scan the surrounding environment.

[0028] The front part of the guide groove 351 is provided with a pressing block 36 that presses against the front wall of the movable seat 33. The front wall of the guide groove 351 is provided with a block groove 353 that is inserted and matched with the pressing block 36. A compression spring 361 is fixed between the front wall of the pressing block 36 and the front wall of the block groove 353. When the movable seat 33 moves forward, it will press against the rear wall of the pressing block 36, and then the pressing block 36 will be pressed into the block groove 353 by the force of the forward movement.

[0029] A guide rod 362 is fixed to the bottom surface of the extrusion block 36. Multiple arc-shaped grooves 401 arranged in a ring with equal spacing are formed on the top surface of the turntable 40. The guide rod 362 slides into the arc-shaped grooves 401. A connecting groove 402 is formed between adjacent arc-shaped grooves 401, and the guide rod 362 slides into the connecting groove 402. The connecting groove 402 is perpendicular to the axial direction of the turntable 40. When the extrusion block 36 moves forward under force, it will extrude through the guide rod 362 to the inner wall of the arc-shaped grooves 401, thereby causing the turntable 40 to rotate. Simultaneously, the limiting rod 41 fixed to the top surface of the turntable 40 will also rotate synchronously. The number of arc-shaped grooves 401 and connecting grooves 402 is set to the number of limiting rods 41. The number is twice that of the previous one, so each rotation of the limiting rod 41 is in a different position than the previous one, and after every two rotations, all the limiting rods 41 will return to their initial positions. Through this design, after each rotation, there will be a limiting rod 41 located inside the guide groove 351, and the limiting rods 41 located inside the guide groove 351 in two adjacent rotations will correspond to different channel entrances. In this way, the moving seat 33 will be guided to different channels by the limiting rods 41 during each of the two backward movements, which will result in different deflection directions of the first lens 34 each time, thereby achieving the purpose of swinging the irradiation direction left and right. During this period, the effect of the moving seat 33 moving back and forth on the beam angle is also maintained.

[0030] A bottom groove 403 is formed on the inner side of the bottom surface of the connecting groove 402. A limiting block 43 is connected inside the bottom groove 403 via a support spring 42. The side of the limiting block 43 away from the axis of the turntable 40 is an inclined structure, while the side of the limiting block 43 near the axis of the turntable 40 has an arc-shaped structure with the same curvature as the inner wall of the arc-shaped groove 401. When the pressing block 36 moves the guide rod 362 forward, it will press against the side wall of the limiting block 43 near the axis of the turntable 40. Although the side wall of the limiting block 43 near the turntable 40 is an arc surface, it is vertically perpendicular to the bottom surface of the connecting groove 402. Therefore, the limiting block 43 will... The guide rod 362 is guided to one side of the arc groove 401, which causes the guide rod 362 to squeeze the arc groove 401 and drive the turntable 40 to rotate. When the moving seat 33 moves backward, the squeezing block 36 loses the restriction of the moving seat 33 and will pop out of the block groove 353 under the action of the compression spring 361. During this process, the guide rod 362 will contact the inclined side wall of the limiting block 43 and then press the limiting block 43 into the bottom groove 403 through the inclined surface until the guide rod 362 passes the limiting block 43. Then it will pop out under the action of the support spring 42 and be blocked between the guide rod 362 and the opening end of the connecting groove 402.

[0031] A ratchet 44 is coaxially sleeved in the middle of the turntable 40. An annular groove 101 is formed in the interlayer of the bottom surface of the outer casing 10 to rotatably engage with the ratchet 44. A pawl 45 is hinged inside the annular groove 101 to mesh with the ratchet 44. A compression spring 46 is fixed between the pawl 45 and the inner wall of the annular groove 101. The structure of the ratchet 44 and the pawl 45 can effectively prevent the turntable 40 from reversing. With the restriction of the pawl 45 and the compression spring 46, the turntable 40 still needs to overcome the compression spring 46 when rotating in a uniform direction. The force is such that when the movable seat 33 moves backward, it will not cause the turntable 40 to rotate regardless of which side of the limit rod 41 it contacts, thus avoiding the problem that the limit rod 41 cannot guide the movable seat 33 to the designated channel. It should be noted that although the spring force of the compression spring 46 is strong, the force applied by the drive mechanism 50 is more stable and stronger. At the same time, the friction force generated by the ratchet 44 rotating in the unrestricted direction on the pawl 45 is very limited. Therefore, the problem of the compression spring 46 restricting the rotation of the turntable 40 will not occur.

[0032] A circular groove 11 is formed on the front wall of the outer casing 10. Two clamping plates 24 located on the front side are inserted into the rear of the circular groove 11. A plate groove 102 is formed below the circular groove 11, which is inserted into the movable plate 31. A fixing ring 12 is slidably connected to the front opening end of the circular groove 11. A glass plate 121 is embedded in the middle of the fixing ring 12. The light beam passes through the glass plate 121 and illuminates the inspection path. Multiple sliding rods 13 are evenly fixed on the rear wall of the fixing ring 12. The sliding rods 13 are slidably connected to the front wall of the outer casing 10. A tension spring 14 is fixed between the sliding rod 13 and the inner wall of the outer casing 10. When the first lens 34 and the movable plate 31 move forward to the positions of the circular groove 11 and the plate groove 102, since they are inserted into the corresponding grooves, their forward movement will reduce the space in the circular groove 11 and the plate groove 102, and the air pressure will increase accordingly. The inner walls of the circular groove 11 and the plate groove 102 are connected to the first lens 34 and the movable plate 31. The gap between the moving plates 31 is small, making it difficult for a large amount of gas to escape from the orifice after pressurization. Under the influence of the rigid driving force of the drive mechanism 50, the size of the orifice cannot be changed due to changes in air pressure. However, the tension spring 14 at the rear of the slide rod 13 has a small elastic force. According to the basic principles of fluid mechanics, fluids usually flow from areas with high total mechanical energy to areas with low total mechanical energy. Total mechanical energy includes components such as pressure energy, gravitational potential energy, and kinetic energy. Therefore, it can be known that fluids tend to flow towards the side with less resistance. As a result, when the air pressure increases, the fixed ring 12, which can move, is on the side with less resistance. Thus, the gas can easily push the slide rod 13 and the fixed ring 12 forward. This allows the fixed ring 12 and the glass plate 121 to move more significantly, preventing phototactic insects from lying on the glass plate 121 during the ship's movement and affecting the light path and lighting quality of the lighting equipment.

[0033] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any person skilled in the art who makes equivalent substitutions or changes to the variable spot LED lens module with cam push rod mechanism and its inventive concept disclosed in the present invention within the scope of the technology disclosed in the present invention should be covered within the scope of protection of the present invention.

Claims

1. A variable spot LED lens module employing a cam pusher mechanism, comprising a housing (10), characterized in that, The rear side inside the housing (10) is provided with a lighting mechanism (20), and the front side inside the housing (10) is provided with a dimming mechanism (30). The light-changing mechanism (30) includes a movable plate (31), which is slidably connected to the inner wall of the outer shell (10). A movable block (32) is slidably connected inside the movable plate (31), and a movable seat (33) is rotatably connected inside the movable block (32). A first lens (34) is fixed above the movable seat (33). A fixed plate (35) is fixed inside the outer shell (10). A guide groove (351) is opened on the fixed plate (35). Two symmetrical channels extend obliquely to both sides from the rear of the guide groove (351). The lower part of the movable seat (33) is slidably engaged with the guide groove (351). The outer shell (10) is rotatably connected to a turntable (40). Multiple limiting rods (41) arranged in a ring-shaped and equally spaced structure are fixed on the turntable (40). The guide groove (351) has rod grooves (352) on both sides that slide with the limiting rods (41). At any given time, only one limiting rod (41) is located inside the guide groove (351), and the limiting rod (41) located inside the guide groove (351) corresponds to the channel opening end on one side of the guide groove (351). The movable plate (31) is provided with a drive mechanism (50) on one side to drive the movable plate (31) to move back and forth. When the movable seat (33) moves backward, it presses against the limiting rod (41). The two channels at the rear of the guide groove (351) are both arc-shaped. The front of the guide groove (351) is provided with a pressing block (36) that presses against the front wall of the movable seat (33). The front wall of the guide groove (351) is provided with a block groove (353) that is inserted and matched with the pressing block (36). A compression spring (361) is fixed between the front wall of the pressing block (36) and the front wall of the block groove (353). A guide rod (362) is fixed on the bottom surface of the pressing block (36). The top surface of the turntable (40) is provided with multiple arc-shaped grooves (401) arranged in a ring with equal spacing. The guide rod (362) slides with the arc-shaped groove (401). A connecting groove (402) is provided between two adjacent arc-shaped grooves (401). The guide rod (362) slides with the connecting groove (402). The connecting groove (402) is perpendicular to the axis of the turntable (40). A bottom groove (403) is provided on the bottom surface of the connecting groove (402) near the axis of the turntable (40). A limiting block (43) is connected inside the bottom groove (403) through a support spring (42). The side of the limiting block (43) away from the axis of the turntable (40) is a sloping structure. The side of the limiting block (43) near the axis of the turntable (40) has an arc surface structure that matches the curvature of the inner wall of the arc-shaped groove (401). A ratchet (44) is coaxially sleeved in the middle of the turntable (40). An annular groove (101) is provided in the bottom interlayer of the outer shell (10) to rotate with the ratchet (44). A pawl (45) that meshes with the ratchet (44) is hinged inside the annular groove (101). A compression spring (46) is fixed between the pawl (45) and the inner wall of the annular groove (101). The movable block (32) has a through groove (321) in the middle that rotates with the upper end of the movable seat (33). A guide ring (322) is coaxially fixed inside the through groove (321). The front and rear sides of the guide ring (322) are connected and fixed to the inner wall of the through groove (321) through connecting rods (323). The guide ring (322) is slidably connected to the movable seat (33). A return spring (324) is sleeved on the guide ring (322) at the gap between the connecting rod (323) and the side wall of the movable seat (33).

2. A variable spot LED lens module employing a cam pusher mechanism according to claim 1, characterized in that, The lighting mechanism (20) includes a fixed base (21). A second lens (22) and an LED lamp (23) are respectively provided on the front and rear sides above the fixed base (21). Two clamping plates (24) are symmetrically fitted on the second lens (22) and the first lens (34). The two clamping plates (24) are connected and fixed to each other by screws. The multiple clamping plates (24) are respectively connected and fixed to the movable base (33) and the fixed base (21).

3. A variable spot LED lens module employing a cam pusher mechanism according to claim 2, characterized in that, The drive mechanism (50) includes a motor (51) that is fixedly connected to the inner wall of the housing (10). The output end of the motor (51) is coaxially fixedly connected to a rotating shaft (52). A bidirectional threaded groove (521) is provided on the rotating shaft (52). A shaft groove (311) that slides with the rotating shaft (52) is provided on the movable plate (31). A guide block (312) that slides with the bidirectional threaded groove (521) is fixedly provided on the inner wall of the shaft groove (311).

4. A variable spot LED lens module employing a cam pusher mechanism according to claim 3, characterized in that, The front wall of the outer shell (10) is provided with a circular groove (11), and the two clamping plates (24) on the front side are inserted into the rear of the circular groove (11). A plate groove (102) is provided below the circular groove (11) to be inserted into the movable plate (31).

5. A variable spot LED lens module with a cam push rod mechanism according to claim 4, wherein a fixed ring (12) is slidably connected to the front opening end of the circular groove (11), a glass plate (121) is embedded in the middle of the fixed ring (12), a plurality of slide rods (13) are uniformly fixed on the rear wall of the fixed ring (12), the slide rods (13) are slidably connected to the front wall of the outer shell (10), and a tension spring (14) is fixed between the slide rods (13) and the inner wall of the outer shell (10).

6. A variable spot LED lens module employing a cam pusher mechanism according to claim 5, characterized in that, The outer casing (10) has an inspection port (103) on one side. A movable door (15) is connected to the inspection port (103) by screws. A heat dissipation window (151) is embedded in the middle of the movable door (15). A base (16) is fixed at the lower part of the outer casing (10).

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