A focus adjustable spotlight

Abstract

The utility model provides a kind of adjustable focus spotlight, through the cooperation of adjusting ring, chute and moving cover, accurate linear displacement of rotating motion is converted into lens, whole focusing mechanism is integrated in lamp cylinder inside, without extra setting independent lamp holder or huge linear telescopic device, greatly optimize space utilization. Adopt inclined plane sliding mechanism, user can stepless, continuously change light beam focal point by rotating exposed adjusting knob, adjusting process is stable, accurate. Cancel the complex lamp holder structure needing independent mold opening, main function components can be manufactured and assembled in standard lamp cylinder using conventional process, significantly reduce mold and production cost, improve production efficiency and product versatility. By setting the limit cooperation of recess and protrusion, effectively prevent moving cover from circumferential rotation during moving, ensure the accuracy and smooth of focusing action. Set multiple chute and adjusting protrusion, make stress more uniform, movement more stable.

Description

Technical Field

[0001] This utility model relates to the field of spotlight technology, and in particular to an adjustable focus spotlight. Background Technology

[0002] In spotlight design, existing technologies primarily employ two methods to achieve beam angle adjustment. One method involves incorporating an independently rotatable or tilting lamp head module within the luminaire. While this method enables focusing, the lamp head requires separate mold manufacturing as an independent component, significantly increasing mold costs and assembly processes, hindering cost control in mass production. The second method utilizes a linear telescopic device that allows the light source module to move directly back and forth along the optical axis. Although this method is relatively simple in structure, the adjustment process is often staged, making it difficult to achieve precise, stepless beam adjustment. Furthermore, linear telescopic structures typically occupy a large axial space, making it difficult to compress the overall size of the luminaire, resulting in a less compact structure and limiting its application in confined spaces or situations with strict installation space requirements. Therefore, there is an urgent need for a spotlight focusing solution that is compact, low-cost, and capable of precise adjustment. Summary of the Invention

[0003] In view of this, the present invention provides an adjustable focus spotlight, which addresses the problems of the prior art by designing a combination of an adjustment ring, a slanted groove, and a movable cover to convert rotational motion into precise linear displacement of the lens, thereby solving the existing technical problems.

[0004] The objective of this utility model is achieved through the following technical solution: An adjustable focus spotlight, comprising: The lamp tube has a hollow interior forming a device receiving cavity for installing spotlight functional components. A transverse sliding groove is provided on the outer wall of the middle front section, which is located on a plane perpendicular to the direction of light emission from the lamp tube and penetrates the outer wall. The lighting assembly is fixedly installed in the rear part of the front section of the lamp tube device housing cavity, and its light emission direction is towards the light outlet at the frontmost end of the lamp tube. The movable cover has its rear section located outside the light assembly, and its front and rear sections move between the light outlet of the lamp tube and the light assembly. The outer side of its outer wall is provided with an inclined groove at an angle to the light emission direction. The lens assembly is fixedly installed inside the front section of the movable cover and is located directly in front of the light emission direction of the light assembly; An adjusting ring is fitted onto the outside of the movable cover and can rotate relative to it. An adjusting protrusion is provided on its inner wall, extending into a slidable groove. When the adjusting ring is rotated, the adjusting protrusion slides within the slid groove, driving the movable cover to move along the light beam emission direction of the lamp, thereby changing the relative position between the lens assembly and the light assembly, achieving continuous focusing of the spotlight beam. An adjusting knob is provided on the outer surface of the adjusting ring, passing through a transverse sliding groove and fixedly connected to the adjusting ring for rotating the adjusting ring.

[0005] Furthermore, the inner side of the movable cover and the outer side of the light assembly are provided with a groove and a protrusion for engagement and positioning. The groove is along the light emission direction of the lamp tube, and the groove is provided on the inner side of the movable cover and the protrusion is provided on the outer side of the light assembly, or the protrusion is provided on the inner side of the movable cover and the groove is provided on the outer side of the light assembly.

[0006] Furthermore, multiple inclined grooves are provided, evenly distributed on the outside of the movable cover, and the adjustment protrusions are set to correspond to the position and number of inclined grooves.

[0007] Furthermore, an installation notch is provided on the outer wall of the rear section of the lamp tube, and a mounting bracket is fixedly installed in the installation notch for installing the spotlight.

[0008] Compared with the prior art, the beneficial effects of this utility model are as follows: 1. Compact structure and space saving: Through the cooperation of the adjusting ring, inclined groove and moving cover, the rotational motion is converted into the precise linear displacement of the lens. The entire focusing mechanism is integrated inside the lamp tube, eliminating the need for an additional independent lamp head or a large linear telescopic device, which greatly optimizes the space utilization.

[0009] 2. Precise adjustment and easy operation: Adopting a sloping sliding mechanism, users can steplessly and continuously change the beam angle by rotating the exposed adjustment knob, and the adjustment process is smooth and precise.

[0010] 3. Low cost and easy production: The complex lamp head structure that requires independent mold opening is eliminated. The main functional components (such as the movable cover and adjustment ring) can be manufactured and assembled in the standard lamp tube using conventional processes, which significantly reduces mold and production costs and improves production efficiency and product versatility.

[0011] 4. Stable operation and high reliability: By setting the limiting fit of the groove and the protrusion, the circumferential rotation of the moving cover is effectively prevented during movement, ensuring the accuracy and smoothness of the focusing action. Multiple inclined grooves and adjusting protrusions make the force more even and the movement more stable. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the axial cross-section of the adjustable focus spotlight in this utility model; Figure 2This is a schematic diagram showing the disassembled adjustable focus spotlight of this utility model; Figure 3 This is a schematic diagram of the movable cover in this utility model.

[0013] The annotations in the attached figures are explained as follows: Lamp tube 10, horizontal sliding groove 11, light outlet 12, mounting notch 13, lighting assembly 20, movable cover 30, rear section 31, front section 32, inclined groove 33, lens assembly 40, adjustment ring 50, adjustment protrusion 51, adjustment knob 52, groove 60, protrusion 70, mounting bracket 80. Detailed Implementation

[0014] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings.

[0015] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the content disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of this disclosure, and not all of them. This disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this disclosure. It should be noted that, in the absence of conflict, the following embodiments and features in the embodiments can be combined with each other. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0016] To achieve a compact structure, save space, and ensure more precise and stable adjustment, the specific details of this utility model are as follows.

[0017] Combination Figure 1 and Figure 2 As shown, an embodiment of this utility model is an adjustable focus spotlight, which mainly includes a lamp tube 10, a light assembly 20, a movable cover 30, a lens assembly 40, and an adjustment ring 50.

[0018] The lamp barrel 10 serves as the main supporting structure, with a hollow interior forming a device housing cavity. A transverse sliding groove 11 is formed on the outer wall of the middle section of the front part of the lamp barrel 10. This groove is located on a plane perpendicular to the light emission direction of the lamp barrel 10 (i.e., a radial plane) and penetrates the wall of the lamp barrel 10. The lighting assembly 20 (typically including an LED light source, substrate, and heat dissipation components, or other similar compatible light-emitting components, which are readily available and will not be described in detail here) is fixedly installed in the rear part of the front section of the device housing cavity of the lamp barrel 10 using screws, clips, or tight fitting, with its light-emitting surface facing the light outlet 12 at the front end of the lamp barrel 10.

[0019] The movable cover 30 is generally cylindrical, with its rear section 31 slidably fitted onto the outside of the fixed lighting assembly 20. A lens assembly 40 is fixedly installed inside the front section 32 of the movable cover 30 using a pressure ring, threads, or snap-fit, and this lens assembly 40 faces the light-emitting surface of the lighting assembly 20. Multiple oblique grooves 33, forming acute angles with the axial direction (light emission direction), are evenly spaced on the outer wall of the movable cover 30.

[0020] An adjusting ring 50 is coaxially sleeved on the outside of a movable cover 30. An adjusting protrusion 51 is integrally formed on the inner wall of the adjusting ring 50 towards the axis. A corresponding number of adjusting protrusions 51 are respectively embedded in multiple inclined grooves 33 of the movable cover 30, forming a sliding fit. An adjusting knob 52 is fixed to the outer side of the adjusting ring 50. This adjusting knob 52 passes outward through a transverse sliding groove 11 on the lamp holder 10 and is exposed, facilitating direct pushing of the adjusting knob 52 to rotate the adjusting ring 50.

[0021] The focusing principle is as follows: When the user moves the adjustment knob 52 from the outside, the adjustment knob 52 causes the adjustment ring 50 to rotate relative to the lamp barrel 10 and the moving cover 30. Because the adjustment protrusion 51 is engaged in the inclined groove 33 and constrained by the wall of the lamp barrel 10, the rotational movement of the adjustment ring 50 forces the adjustment protrusion 51 to slide along the trajectory of the inclined groove 33. The inclined design of the inclined groove 33 decomposes the circumferential displacement of the adjustment protrusion 51 into component displacements along the axial direction of the lamp barrel 10, thereby driving the entire moving cover 30 and the lens assembly 40 fixed within it to move smoothly back and forth along the optical axis. The continuous change in the distance between the lens assembly 40 and the light assembly 20 enables stepless and precise adjustment of the beam focus from focused to floodlight.

[0022] The key feature of this invention is that, through the cooperation of the adjusting ring 50, the inclined groove 33, and the movable cover 30, the rotational motion is converted into the precise linear displacement of the lens. The entire focusing mechanism is integrated inside the lamp tube 10, eliminating the need for a separate lamp head or a bulky linear telescopic device, thus greatly optimizing space utilization. Using an inclined sliding mechanism, users can steplessly and continuously change the beam focus by rotating the exposed adjusting knob 52, ensuring a smooth and precise adjustment process. The complex lamp head structure requiring independent molding is eliminated; the main functional components (such as the movable cover 30 and the adjusting ring 50) can be manufactured using conventional processes and assembled into a standard lamp tube, significantly reducing mold and production costs and improving production efficiency and product versatility.

[0023] Furthermore, in some embodiments, such as Figure 2 and Figure 3As shown, to ensure that the movable cover 30 moves only along the axial direction (light emission direction) and does not undergo undesirable rotation with the adjusting ring 50, a groove 60 and a protrusion 70 are provided on the inner side of the movable cover 30 and the outer side of the lamp assembly 20 for engagement and limiting. The groove is along the light emission direction of the lamp tube 10. The groove 60 is located on the inner side of the movable cover 30 and the protrusion 70 is located on the outer side of the lamp assembly 20, or the protrusion 70 is located on the inner side of the movable cover 30 and the groove 60 is located on the outer side of the lamp assembly 20. The groove 60 extends along the axial direction (light emission direction) of the lamp tube 10 and cooperates with the protrusion 70 to effectively prevent the movable cover from rotating circumferentially during movement, ensuring the accuracy and smoothness of the focusing action. Of course, at least two sets of grooves 60 and protrusions 70 are generally provided here to limit the movement direction from multiple directions, which can better ensure that the movable cover 30 moves only along the axial direction.

[0024] Furthermore, in some embodiments, to further optimize the stability and force balance of the structure, multiple inclined grooves 33 are provided, evenly distributed on the outside of the movable cover 30, and the position and number of the protrusions 51 are adjusted to correspond to the inclined grooves 33. Generally, two inclined grooves 33 are provided opposite to each other. Multi-point drive makes the movable cover 30 evenly stressed, the movement smoother, less prone to jamming, and more stable.

[0025] Furthermore, in some embodiments, such as Figure 2 As shown, to facilitate the overall installation of the spotlight, a mounting notch 13 is provided on the outer wall of the rear section of the lamp barrel 10. A mounting bracket 80 is fixedly installed within the mounting notch 13 for mounting the spotlight. The mounting notch 13 is formed on the outer wall of the rear section of the lamp barrel 10, and the mounting bracket 80 is fixed within the notch 13 by screws or a tight fit. The mounting bracket 80 typically has elastic clips or screw holes, facilitating the quick installation of the entire spotlight into an opening in the ceiling or onto a guide rail.

[0026] The above description is merely illustrative of the embodiments of this utility model and is not intended to limit the scope of this utility model. For those skilled in the art, any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model without creative labor should be included within the protection scope of this utility model.

Claims

1. An adjustable focus spotlight, characterized in that, It includes: The lamp tube (10) has a hollow interior forming a device receiving cavity for installing spotlight functional components. A transverse sliding groove (11) is provided on the outer wall of the middle section of its front section, which is located on the plane perpendicular to the light emission direction of the lamp tube (10) and penetrates the outer wall. The light assembly (20) is fixedly installed in the front rear part of the device receiving cavity of the lamp tube (10), and its light emission direction is towards the light outlet (12) at the front end of the lamp tube (10). The movable cover (30) has its rear section (31) movable cover located outside the light assembly (20), and its front section (32) and rear section (31) move between the light outlet (12) of the lamp tube (10) and the light assembly (20). Its outer wall has an inclined groove (33) at an angle to the light emission direction. The lens assembly (40) is fixedly installed in the front section (32) of the movable cover (30) and located directly in front of the light emission direction of the light assembly (20); An adjustment ring (50) is fitted on the outside of the movable cover (30) and can rotate relative to it. An adjustment protrusion (51) is provided on its inner wall facing inward. The adjustment protrusion (51) extends into the inclined groove (33) and slides in cooperation with it. When the adjustment ring (50) is rotated, the adjustment protrusion (51) slides in the inclined groove (33), driving the movable cover (30) to move along the light emission direction of the lamp tube (10), thereby changing the relative position between the lens assembly (40) and the light assembly (20) to realize the continuous focusing function of the spotlight beam. An adjustment knob (52) is provided on the outer surface of the adjustment ring (50). The adjustment knob (52) passes through the transverse sliding groove (11) and is fixedly connected to the adjustment ring (50) for rotating the adjustment ring (50).

2. The adjustable focus spotlight according to claim 1, characterized in that: The inner side of the movable cover (30) and the outer side of the light assembly (20) are provided with a groove (60) and a protrusion (70) for engagement and positioning. The groove (60) is along the light emission direction of the lamp tube (10). The groove (60) is located inside the movable cover (30) and the protrusion (70) is located outside the light assembly (20), or the protrusion (70) is located inside the movable cover (30) and the groove (60) is located outside the light assembly (20).

3. The adjustable focus spotlight according to claim 1, characterized in that: The inclined groove (33) is provided in multiple ways and is evenly distributed on the outside of the movable cover (30). The adjustment protrusion (51) is set to correspond to the position and number of the inclined groove (33).

4. The adjustable focus spotlight according to claim 1, characterized in that: An installation notch (13) is provided on the outer wall of the rear section of the lamp tube (10), and a mounting bracket (80) is fixedly provided in the installation notch (13) for installing the spotlight.

Images