A lamp panel angle adjusting mechanism, a rotating platform, a lamp and an angle adjusting method

Abstract

The application discloses a lamp panel angle adjusting mechanism, a rotating platform, a lamp and an angle adjusting method. The lamp panel angle adjusting mechanism is arranged in a lamp shell and connected with the inner wall of the lamp shell. The lamp panel angle adjusting mechanism comprises an adjusting bolt, a steel wire flexible shaft, a threaded head and a threaded sleeve. One end of the steel wire flexible shaft is press-fit connected with the adjusting bolt, and the other end is press-fit connected with the threaded head. The threaded head is threadedly connected with the threaded sleeve. One side of the threaded sleeve is fixedly connected with a lamp panel fixing base. The lamp panel fixing base is hingedly connected with the inner wall of the lamp shell. When the adjusting bolt is adjusted to rotate under the action of external force, the elastic space of the steel wire flexible shaft is compressed or released, the torsion of the steel wire flexible shaft is increased or reduced, the torsion of the steel wire flexible shaft is transmitted to the threaded head, the threaded head rotates in the threaded sleeve under the action of the torsion of the steel wire flexible shaft, and the lamp panel fixing base performs pitching action around the hinge of the lamp shell under the dragging of the threaded sleeve, so that the lamp panel angle is adjusted. The application can efficiently transmit the torsion, accurately convert the angle and stably keep the angle, and realizes flexible adjustment of the lamp panel angle.

Description

Technical Field

[0001] This invention relates to the field of lighting technology, and in particular to a lamp panel angle adjustment mechanism, a rotating platform, a lighting fixture, and an angle adjustment method. Background Technology

[0002] As LED lighting technology rapidly develops towards higher integration, higher luminous efficiency, and greater intelligence, high-end recessed luminaires with COB (Chip on Board) light sources at their core are widely used in commercial lighting, architectural landscapes, museum exhibitions, and smart spaces. These luminaires typically require precisely controllable beam angles to achieve accent lighting, wall washing effects, or dynamic beam tracking. However, in actual engineering deployments, once the luminaire is installed, its optical axis is permanently fixed. If the illumination angle needs to be recalibrated due to design deviations, changes in the site environment, or adjustments to usage requirements, it often faces the serious challenge of being unable to adjust, having difficulty adjusting, or incurring high adjustment costs.

[0003] To address this issue, the industry has attempted to integrate mechanical angle adjustment mechanisms inside lighting fixtures. Existing technical solutions can be broadly categorized into three types: 1. Rigid linkage or gear transmission structure: The lamp panel is tilted by driving the internal gear set or push rod through the external knob. However, this type of structure is bulky, has many parts, and has high mold costs. It is difficult to arrange in ultra-thin or sealed lamp housings, and it is prone to jamming or backlash due to assembly tolerances, which affects the adjustment accuracy. II. Motor-driven gimbal system: Although it can achieve remote electric control adjustment, it is costly, consumes a lot of power, and depends on the power supply and control system. It is not suitable for passive installation scenarios (such as ceilings or outdoor recessed lights without wiring conditions). Moreover, the lifespan of the motor and its waterproof reliability become long-term hidden dangers. 3. Simple friction locking pitch bracket: It relies on springs or clamping screws to provide holding force. Although the structure is simple, it has obvious defects. For example, the adjustment process feels stiff and the angle is easy to drift. Especially after temperature changes, vibration or long-term use, the friction decreases, causing the lamp panel to sag and the optical axis to become inaccurate, which seriously affects the lighting quality and safety.

[0004] More importantly, existing adjustment mechanisms generally fail to strike a balance between the demands for compact space, high holding force, continuous adjustability, safe amplitude limiting, and ease of operation. For example, to achieve reliable self-locking, additional braking components, such as ratchet, locking nut, or electromagnetic brake, are often required. This not only increases structural complexity but also compromises the overall sealing and aesthetic simplicity of the luminaire. On the other hand, pursuing a minimalist design sacrifices angular stability, making it difficult to meet the optical axis precision requirements of professional lighting.

[0005] Furthermore, almost all current adjustment solutions on the market rely on rigid force transmission paths, such as typical metal rods and gear shafts. These mechanisms are prone to stress concentration, assembly interference, or dead points in narrow, curved lamp housing channels. Especially when there is a non-linear arrangement between the external knob and the lamp panel, the efficiency of traditional transmission methods drops sharply, or even fails completely.

[0006] In summary, how to construct an adjustment path within a highly constrained, sealed luminaire that can efficiently transmit rotational torque, accurately convert rotational motion into pitch motion at a limited angle, and maintain self-holding capability at any position has become a major challenge in the industry.

[0007] Therefore, there is an urgent need to propose a lamp panel angle adjustment mechanism, a rotating platform, a lamp, and an angle adjustment method to overcome the above problems. Summary of the Invention

[0008] To address the problems existing in the prior art, this invention provides a lamp panel angle adjustment mechanism, a rotating platform, a lamp fixture, and an angle adjustment method. By adopting this technical solution, on the one hand, efficient torque transmission within a compact space is achieved: by using a flexible steel wire shaft, the flexible steel wire shaft can effectively transmit rotational torque within a limited space, solving the problems of stress concentration, assembly interference, or dead points in narrow, curved channels caused by traditional rigid transmission paths. This not only achieves gapless, high-efficiency torque transmission in a confined space but also possesses good axial flexibility and circumferential torsional stiffness. Compared to traditional rigid linkages or gear transmission structures, it avoids jamming and backlash problems caused by assembly tolerances, ensuring precise angle adjustment capabilities and saving on the mold costs of complex parts. More importantly, in terms of clearance design, the flexible steel wire shaft only needs to leave sufficient margin to achieve flexible clearance operation without altering the internal structure of the existing lamp housing. On the other hand, it achieves precise angle conversion and stable maintenance: the threaded pair and the hinge assembly work together, and through the cooperation of the threaded head and the threaded sleeve, the rotational motion is converted into a small displacement trend, and further converted into a torque output around the hinge center, thereby driving the lamp plate mounting base to perform up and down pitch movements within a range of ±15°, ensuring the accuracy of angle adjustment. In addition, it has self-locking and amplitude limiting functions: the design of the T-shaped hinge and the stroke port realizes mechanical amplitude limiting protection, while the damping ring on the outer periphery of the adjusting bolt provides static holding torque. When no external force is continuously applied, the lamp plate fixing seat can achieve self-holding positioning at any intermediate angle position without the need for additional braking components, such as ratchet, lock nut, etc., which simplifies the structural complexity and improves the reliability and sealing performance of the lamp, saving mold opening costs; In addition, it is easy to operate and maintain: the angle of the lamp panel can be continuously adjusted by applying directional torque to the adjusting bolts with external tools, without disassembling the lamp or relying on the motor drive system, which greatly improves the convenience of later maintenance and reduces costs. It supports non-contact angle adjustment after the lamp is installed, so that the lamp can flexibly adjust the beam direction as needed during actual use, improving the user experience.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by the present invention is as follows: This application proposes a lamp panel angle adjustment mechanism, which is disposed inside the lamp housing and connected to the inner wall of the lamp housing. The mechanism comprises an adjusting bolt, a flexible steel shaft, a threaded head, and a threaded sleeve. One end of the flexible steel shaft is press-fitted and fixedly connected to the adjusting bolt, and the other end of the flexible steel shaft is press-fitted and fixedly connected to the threaded head. The threaded head has an external thread, and the threaded sleeve has an internal thread. The threaded head can be threadedly connected to the threaded sleeve. A lamp panel fixing seat is fixedly connected to the side surface of the threaded sleeve near the lamp panel, and the lamp panel fixing seat is hinged to the inner wall of the lamp housing. When the adjusting bolt is rotated by an external force, the elastic space of the flexible steel shaft can be compressed or released, the torque of the flexible steel shaft increases or decreases, and the torque of the flexible steel shaft can be transmitted to the threaded head. Under the action of the torque of the flexible steel shaft, the threaded head can rotate within the threaded sleeve. Under the dragging action of the threaded sleeve, the lamp plate fixing seat can move up and down around the hinge of the lamp housing, thereby realizing the lamp plate angle adjustment function.

[0010] Optionally, one end of the adjusting bolt is provided with a drive groove, and the outer periphery of the other end of the adjusting bolt is provided with a damping ring. A limit groove is provided between the driving groove and the damping ring. A set of limit screws is slidably engaged in the limit groove. The limit screws are disposed inside the lamp housing.

[0011] Optionally, the flexible steel shaft is made of multiple steel wires wound in layers, and the material of the flexible steel shaft is stainless steel, galvanized steel or alloy steel.

[0012] This application proposes a rotating platform, which includes the lamp panel angle adjustment mechanism described in any of the above claims, characterized in that: the rotating platform further includes a lamp panel fixing seat and a hinge assembly, the lamp panel fixing seat is movably connected to the inner wall of the lamp housing through the hinge assembly, the hinge assembly includes a T-shaped hinge member and a hinge groove, one end of the T-shaped hinge member is integrally formed and connected to the lamp panel fixing seat, and the other end of the T-shaped hinge member is movably connected to the hinge groove, the hinge groove being disposed on the inner wall surface of the lamp housing.

[0013] Optionally, along the axial direction of the lamp housing, an arc-shaped fitting is fitted at the upper end of the hinge groove, the arc-shaped fitting covering the upper port of the hinge groove, so that the end of the T-shaped hinge member away from the lamp plate fixing seat is confined within the hinge groove; along the radial direction of the lamp housing, a travel port is provided on the side of the hinge groove away from the lamp housing, the travel port communicating with the upper port of the hinge groove, the travel port accommodating the end of the T-shaped hinge member away from the lamp housing to move within the hinge groove, and the lamp plate fixing seat can perform an up and down pitch movement of -15° to +15° around the inner wall of the lamp housing.

[0014] This application also proposes a lamp, characterized in that it comprises: lamp housing; The aforementioned rotating platform is installed inside the lamp housing. Along the axial direction of the lamp housing, a movable groove is provided on the outer wall of the lamp housing, which communicates with the interior of the lamp housing. The adjusting bolt, the flexible steel shaft, and the threaded head are sequentially connected and pass through the movable groove. The threaded head is threadedly connected to the threaded sleeve on the lower surface of the lamp plate fixing seat. The lamp panel mounting base has a retracted position and an extended position. When the lamp panel mounting base is in the retracted position, the upper surface of the lamp panel mounting base is parallel to the surface of the bow-shaped accessory. When the lamp panel mounting base is in the extended position, the lamp panel mounting base is separated from the bow-shaped accessory. A set of limiting screws, the limiting screws passing through the outer surface of the lamp housing into the movable groove, the limiting screws slidingly engaging with both sides of the adjusting bolt; The lamp body includes at least a lamp plate and lamp beads, the lamp plate is assembled on the upper surface of the lamp plate mounting base, and the lamp beads are welded to the upper surface of the lamp plate.

[0015] Optionally, it includes a COB lens and a lens holder, wherein the COB lens is assembled inside the lens holder, and the lens holder is fixedly assembled on the lamp panel mounting base.

[0016] Further optionally, it also includes a radar grille and a reflector, wherein the radar grille is assembled and connected to the lamp panel mounting base, and the radar grille is located on the light-emitting surface of the COB lens, and the reflector is a hollow reflective ring, and the reflector is fitted over the COB lens, the lens frame and the radar grille. The inner circumference of the light-emitting end of the lamp housing is provided with a set of assembly slots, and the outer circumference of the reflector is provided with a set of assembly blocks. The assembly blocks and the assembly slots can be matched and inserted into each other, so that the reflector can be fixed on the inner circumference of the lamp housing.

[0017] Alternatively, it may also include an end cap, an embedded part, a screen-printed glass, and a sealing ring, wherein the embedded part is fixedly connected to the end cap by bolts, and the screen-printed glass is sealed between the end cap and the lamp housing by the sealing ring.

[0018] This application also proposes a lamp panel angle adjustment method based on the torque transmission of a flexible steel wire shaft, applicable to any of the above-mentioned lamps, characterized by comprising the following steps: S1. Pre-installation positioning: The lamp plate fixing seat is movably assembled into the hinge groove on the inner wall of the lamp housing through the T-shaped hinge, and the lamp plate fixing seat is in the initial retracted position. At this time, the upper surface of the lamp plate is parallel to the surface of the bow-shaped accessory, and the lateral end of the T-shaped hinge is limited to the hinge groove. S2. Establishing a torque transmission chain: The adjusting bolt, the flexible steel shaft, and the threaded head with external threads are sequentially pressed together to form an integrated transmission unit. The flexible steel shaft is made of multiple layers of stainless steel wire spirally wound, which has axial flexibility and circumferential torsional stiffness. The threaded head is screwed into the threaded sleeve fixed to the lower surface of the lamp plate fixing seat to form a rotatable threaded pair. At the same time, the adjusting bolt is inserted into the movable groove on the outer wall of the lamp housing, and its two sides are slidably engaged between the limiting screws to limit its axial displacement but allow circumferential rotation. S3. Apply directional torque and trigger angle adjustment: Apply clockwise or counterclockwise rotational torque to the drive groove of the adjusting bolt through an external tool. This rotational torque is transmitted to the threaded head in pure torque form without gap via the flexible steel wire shaft. When the flexible steel wire shaft is subjected to torque, it generates an elastic compression / release effect. The torsional potential energy stored inside it causes the threaded head to rotate relative to the threaded sleeve. S4. Converting rotational motion into pitching motion: The rotation of the threaded head causes the threaded sleeve to produce a slight displacement tendency along its axis. The threaded sleeve is rigidly connected to the lamp plate fixing seat, and the lamp plate fixing seat is hinged to the lamp housing. This displacement tendency is converted into a torque output around the hinge center, thereby driving the lamp plate fixing seat and the lamp plate on it to pitch up or down relative to the lamp housing. S5. Implementation of Angle Limiting and Self-Locking Control: During the pitching process, the T-shaped hinge slides within the travel port of the hinge slot. When the lamp panel mounting base reaches the ±15° limit angle, the T-shaped hinge abuts against the boundary of the travel port, achieving mechanical limiting. At the same time, the damping ring on the outer periphery of the adjusting bolt forms a friction pair with the inner wall of the lamp housing, providing a static holding torque when no external force is continuously applied, enabling the lamp panel to achieve self-holding positioning without an additional locking mechanism at any intermediate angle position. S6. Complete the precise setting of the illumination angle: Based on the spatial requirements of the target illumination area, repeat S3-S5 until the optical axis of the lamp points to the required pitch angle. At this time, the steel wire flexible shaft maintains a constant pre-tight torque, and the rotating platform is in a stable and balanced state, completing the non-contact, continuously adjustable and position-locking adjustment process of the lamp panel angle.

[0019] Compared with the prior art, this application has the following technical effects: On the one hand, this application achieves efficient torque transmission in a compact space: by adopting a flexible steel wire shaft, this application can effectively transmit rotational torque in a limited space, solving the problems of stress concentration, assembly interference, or dead points in narrow and curved channels caused by traditional rigid transmission paths. It not only achieves clearance-free and high-efficiency torque transmission in a narrow space, but also has good axial flexibility and circumferential torsional stiffness. Compared with traditional rigid connecting rod or gear transmission structures, it avoids jamming and backlash problems caused by assembly tolerances, ensures precise angle adjustment capability, and saves the mold opening cost of complex parts. More importantly, in terms of clearance design, the flexible steel wire shaft only needs to leave enough margin to achieve flexible clearance operation without changing the internal structure of the existing lamp housing. On the other hand, this application achieves precise angle conversion and stable maintenance: the threaded pair and the hinge assembly of this application work together to convert the rotational motion into a small displacement trend through the cooperation of the threaded head and the threaded sleeve, and further into a torque output around the hinge center, thereby driving the lamp plate fixing seat to perform up and down pitch movements within a range of ±15°, ensuring the accuracy of angle adjustment. In addition, this application has self-locking and amplitude limiting functions: the design of the T-shaped hinge and the stroke port of this application realizes mechanical amplitude limiting protection, while the damping ring on the outer periphery of the adjusting bolt provides static holding torque. When no external force is continuously applied, the lamp plate fixing seat can achieve self-holding positioning at any intermediate angle position without the need for additional braking components, such as ratchet, lock nut, etc., which simplifies the structural complexity and improves the reliability and sealing performance of the lamp, and saves mold opening costs; In addition, this application enables convenient operation and maintenance: the angle of the lamp panel can be continuously adjusted by applying directional torque to the adjusting bolts with external tools, without disassembling the lamp or relying on the motor drive system, which greatly improves the convenience of later maintenance, reduces costs, and supports non-contact angle adjustment after the lamp is installed, so that the lamp can flexibly adjust the beam direction as needed during actual use, improving the user experience. In summary, the lamp panel angle adjustment mechanism, rotating platform, lamp and its angle adjustment method proposed in this application not only overcome the shortcomings of traditional adjustment mechanisms such as large size, inconvenient operation, low precision and difficulty in arranging in a small space, but also achieve the effects of efficient torque transmission, precise angle conversion, stable holding, flexible avoidance and convenient operation.

[0020] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, the preferred embodiments of the present invention are described in detail below with reference to the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is one of the three-dimensional structural schematic diagrams of Embodiment 1 of this application; Figure 2 This is a second three-dimensional structural schematic diagram of Embodiment 1 of this application; Figure 3 This is the third three-dimensional structural schematic diagram of Embodiment 1 of this application; Figure 4 This is a front view of Embodiment 1 of this application; Figure 5 This is a left view of Embodiment 1 of this application; Figure 6 This is one of the cross-sectional schematic diagrams of the assembly structure when used in conjunction with Embodiments 1, 2 and 3 of this application; Figure 7 This is a three-dimensional structural assembly diagram when Embodiments 1, 2, and 3 of this application are used together; Figure 8 This is the second cross-sectional schematic diagram of the assembly structure when used in conjunction with Embodiments 1, 2, and 3 of this application; Figure 9 This is a three-dimensional half-sectional schematic diagram of the assembly structure when Embodiments 1, 2, and 3 of this application are used together; Figure 10 These are partial three-dimensional exploded structural diagrams of Embodiments 2 and 3 of this application; Figure 11 This is one of the three-dimensional exploded structural schematic diagrams of Embodiment 3 of this application; Figure 12 This is the second of the three-dimensional exploded structural schematic diagrams of Embodiment 3 of this application; Figure 13 This is a schematic diagram of the workflow of Embodiment 4 of this application; The parts in the attached diagram are labeled as follows: Lamp housing 1, movable groove 11, assembly groove 12, adjusting bolt 2, drive groove 21, damping ring 22, limit groove 23, limit set screw 24, steel wire flexible shaft 3, threaded head 4, threaded sleeve 5, lamp panel fixing seat 6, hinge assembly 7, T-shaped hinge 71, hinge groove 72, bow-shaped accessory 73, lamp panel 8, COB lens 9, lens frame 100, radar grid 110, reflector 120, assembly block 1201, end cap 130, embedded part 140, silk screen glass 150, and sealing ring 160. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0023] Example 1 like Figures 1 to 7 As shown, in one embodiment of this application, a lamp panel angle adjustment mechanism is disposed inside a lamp housing 1 and connected to the inner wall of the lamp housing 1. The lamp panel angle adjustment mechanism includes an adjusting bolt 2, a flexible steel shaft 3, a threaded head 4, and a threaded sleeve 5. One end of the flexible steel shaft 3 is pressed and fixedly connected to the adjusting bolt 2, and the other end of the flexible steel shaft 3 is pressed and fixedly connected to the threaded head 4. The threaded head 4 is provided with an external thread, and the threaded sleeve 5 is provided with an internal thread. The threaded head 4 can be threadedly connected to the threaded sleeve 5. A lamp panel fixing seat 6 is fixedly connected to the side surface of the threaded sleeve 5 near the lamp panel, and the lamp panel fixing seat 6 is hinged to the inner wall of the lamp housing 1. When the adjusting bolt 2 is rotated by an external force, the elastic space of the flexible steel shaft 3 can be compressed or released, the torque of the flexible steel shaft 3 increases or decreases, and the torque of the flexible steel shaft 3 can be transmitted to the threaded head 4. Under the action of the torque of the flexible steel shaft 3, the threaded head 4 can rotate within the threaded sleeve 5. Under the dragging action of the threaded sleeve 5, the lamp plate fixing seat 6 can move up and down around the hinge of the lamp housing 1 to realize the lamp plate angle adjustment function. On one hand, this embodiment achieves efficient torque transmission within a compact space. By employing a flexible steel wire shaft 3, the flexible steel wire shaft 3 can effectively transmit rotational torque within a limited space, solving the problems of stress concentration, assembly interference, or dead points in narrow and curved channels caused by traditional rigid transmission paths. It not only achieves gapless and highly efficient torque transmission in a narrow space, but also possesses good axial flexibility and circumferential torsional stiffness. Compared with traditional rigid linkage or gear transmission structures, it avoids jamming and backlash problems caused by assembly tolerances, ensuring precise angle adjustment capability and saving mold costs for complex parts. More importantly, in terms of clearance design, the flexible steel wire shaft 3 only needs to leave sufficient margin to achieve flexible clearance operation without altering the internal structure of the existing lamp housing 1. On the other hand, this embodiment achieves precise angle conversion and stable maintenance. This embodiment uses the cooperation of the threaded head 4 and the threaded sleeve 5 to convert rotational motion into a small displacement trend, and further into torque output around the hinge center, thereby driving the lamp plate fixing seat 6 to perform up and down pitch movements within a certain angle range, ensuring the accuracy of angle adjustment.

[0024] like Figure 6 As shown, in another embodiment of this application, preferably, one end of the adjusting bolt 2 is provided with a drive groove 21, and the outer periphery of the other end of the adjusting bolt 2 is provided with a damping ring 22. The adjusting bolt 2 is provided with a limiting groove 23 between the drive groove 21 and the damping ring 22. A set of limiting screws 24 are slidably engaged in the limiting groove 23. The limiting screws 24 are disposed inside the lamp housing 1. The damping ring 22 on the outer periphery of the adjusting bolt 2 in this embodiment provides a static holding torque, ensuring self-holding positioning at any intermediate angle position without the need for additional braking components, such as ratchet or lock nut, thereby simplifying the structural complexity, improving the reliability and sealing performance of the system, and the limiting screw 24 can effectively assist the rotation of the adjusting bolt 2 under the action of external force, preventing the adjusting bolt 2 from breaking out of the movable groove 11 of the lamp housing 1, thus improving the overall structural stability of the lamp plate angle adjustment mechanism.

[0025] like Figures 1 to 4 As shown, in another embodiment of this application, preferably, the flexible steel shaft 3 is formed by winding multiple steel wires in layers (not shown in the figure), and the material of the flexible steel shaft 3 is stainless steel, galvanized steel or alloy steel; In this embodiment, the adjusting bolt 2, the flexible steel wire shaft 3, and the threaded head 4 with external threads are sequentially pressed together to form an integrated transmission unit. The flexible steel wire shaft 3 is made of multiple layers of stainless steel wire spirally wound, which has axial flexibility and circumferential torsional stiffness, thus improving the torque transmission capability.

[0026] Example 2 like Figure 6and Figure 7 As shown, in one embodiment of this application, a rotating platform is provided. The rotating platform includes the lamp panel angle adjustment mechanism described in any of the above embodiments. The rotating platform also includes a lamp panel fixing seat 6 and a hinge assembly 7. The lamp panel fixing seat 6 is movably connected to the inner wall of the lamp housing 1 through the hinge assembly 7. The hinge assembly 7 includes a T-shaped hinge member 71 and a hinge groove 72. One end of the T-shaped hinge member 71 is integrally formed and connected to the lamp panel fixing seat 6, and the other end of the T-shaped hinge member 71 is movably connected to the hinge groove 72. The hinge groove 72 is disposed on the inner wall surface of the lamp housing 1. This embodiment achieves stable pitch and rotation of the lamp panel fixing seat 6 within the lamp housing through the cooperation of the T-shaped hinge 71 and the hinge groove 72. The structure is compact and the movement is reliable. The one-piece molding design improves assembly accuracy and overall rigidity. Under the traction drive of the lamp panel angle adjustment mechanism, the lamp panel fixing seat 6 can perform pitch movement around the hinge center and is protected by the mechanical limiting of the hinge groove 72. After the pitch movement is completed, the damping ring 22 on the outer periphery of the adjusting bolt 2 provides static holding torque, which enables the lamp panel fixing seat 6 to achieve self-holding positioning at any intermediate angle position when there is no continuous external force.

[0027] like Figure 6 As shown, in another embodiment of this application, preferably, along the axial direction of the lamp housing 1, the upper end of the hinge groove 72 is fitted with an arc-shaped accessory 73, the arc-shaped accessory 73 covers the upper port of the hinge groove 72, so that the end of the T-shaped hinge 71 away from the lamp plate fixing seat 6 is limited to the hinge groove 72; along the radial direction of the lamp housing 1, the hinge groove 72 is provided with a travel port on the side away from the lamp housing 1, the travel port is connected to the upper port of the hinge groove 72, the travel port accommodates the end of the T-shaped hinge 71 away from the lamp housing 1 to move within the hinge groove 72, and the lamp plate fixing seat 6 can perform an up and down tilting motion of -15° to +15° around the inner wall of the lamp housing 1; This embodiment effectively limits the axial disengagement of the T-shaped hinge 71 by setting an arc-shaped accessory 73 at the upper end of the hinge groove 72, ensuring that the rotating platform is firmly assembled and runs stably inside the lamp. At the same time, a travel port communicating with the upper port is opened on the radial side of the hinge groove 72, providing a clear range of motion for the T-shaped hinge 71, allowing it to slide smoothly without interference when tilted under force. This enables the lamp plate fixing seat 6 to move precisely and controllably up and down within the range of -15° to +15° around the hinge center, which not only meets the needs of professional lighting for beam angle adjustment, but also achieves natural angle limitation through mechanical boundaries to avoid damage from overtravel. The whole system does not require an additional limiting mechanism, taking into account safety, reliability and compactness, and is particularly suitable for the narrow space layout of recessed sealed lamps.

[0028] Example 3 like Figures 6 to 8 , Figure 11 and Figure 12 As shown, in one embodiment of this application, a lighting fixture includes: lamp housing 1; The rotating platform described in the above embodiment is installed inside the lamp housing 1. Along the axial direction of the lamp housing 1, a movable groove 11 is provided on the outer wall of the lamp housing 1. The movable groove 11 communicates with the interior of the lamp housing 1. The adjusting bolt 2, the flexible steel wire shaft 3, and the threaded head 4 are sequentially connected and pass through the movable groove 11. The threaded head 4 is threadedly connected to the threaded sleeve 5 on the lower surface of the lamp plate fixing seat 6. The lamp panel mounting base 6 has a folded position and an unfolded position. When the lamp panel mounting base 6 is in the folded position, the upper surface of the lamp panel mounting base 6 is parallel to the surface of the bow-shaped accessory 73. When the lamp panel mounting base 6 is in the unfolded position, the lamp panel mounting base 6 is separated from the bow-shaped accessory 73. A set of limiting screws 24, the limiting screws 24 passing through the outer surface of the lamp housing 1 into the movable groove 11, the limiting screws 24 slidingly engaging the two sides of the adjusting bolt 2; The lamp body includes at least a lamp plate 8 and lamp beads, the lamp plate 8 is assembled on the upper surface of the lamp plate fixing seat 6, and the lamp beads are welded to the upper surface of the lamp plate 8; In this embodiment, a movable groove 11 is opened on the outer wall of the lamp housing 1, through which a flexible transmission chain consisting of adjusting bolt 2, steel wire flexible shaft 3 and threaded head 4 can be inserted. This achieves convenient external operation while maintaining the integrity of the main structure of the lamp housing 1. The limiting screw 24 passes through the outside of the lamp housing 1 and engages with both sides of the adjusting bolt 2, effectively limiting its axial movement and ensuring stable torque transmission without dislocation. The lamp plate fixing seat 6 has a dual state of retraction and extension. The process of retraction and extension is also the process of lamp plate angle adjustment, which meets diverse lighting needs. The rotating platform and the lamp body are integrated into the sealed lamp housing 1, and the optical axis can be calibrated without disassembly. It takes into account the convenience of installation, compact structure and reliable adjustment. The overall solution achieves high-precision, self-locking, tool-free (only a general wrench is required) pitch angle adjustment of the lamp plate 8 without compromising the sealing and aesthetics of the lamp. It is significantly better than the existing rigid or motor-driven solutions.

[0029] like Figure 8 and Figure 9 As shown, in another embodiment of this application, preferably, it includes a COB lens 9 and a lens holder 100, wherein the COB lens 9 is assembled in the lens holder 100, and the lens holder 100 is fixedly assembled on the lamp plate fixing seat 6. In this embodiment, the COB lens 9 is fixed to the lamp plate mounting base 6 via the lens holder 100, and is tilted synchronously with the lamp plate mounting base 6 to ensure that the light path and the lamp bead angle are consistent, thereby improving the lighting pointing accuracy and optical performance.

[0030] like Figures 8 to 12 As shown, in another embodiment of this application, it is further preferred to include a radar grille 110 and a reflector 120. The radar grille 110 is assembled and connected to the lamp plate fixing seat 6, and the radar grille 110 is located on the light-emitting surface of the COB lens 9. The reflector 120 is a hollow reflector ring, and the reflector 120 is sleeved on the outside of the COB lens 9, the lens frame 100 and the radar grille 110. A set of mounting grooves 12 is provided on the inner periphery of the light-emitting end of the lamp housing 1, and a set of mounting blocks 1201 is provided on the outer periphery of the reflector 120. The mounting blocks 1201 and the mounting grooves 12 can be matched and inserted into each other, so that the reflector 120 can be fixed on the inner periphery of the lamp housing 1. In this embodiment, the radar grille 110 is linked to the lamp plate mounting base 6 and placed on the light-emitting surface of the COB lens 9. This allows the radar grille 110 to adjust synchronously with the angle of the lamp plate mounting base 6, achieving integrated lighting and anti-glare. The reflector 120, as a hollow reflector ring, completely covers the COB lens 9, lens frame 100, and radar grille 110, effectively improving light efficiency and optimizing the overall appearance. The reflector 120 is connected to the mounting groove 12 on the inner periphery of the light-emitting end of the lamp housing 1 via its outer mounting block 1201, achieving quick, stable, and screwless positioning and installation. This ensures the coaxial accuracy of the optical components and facilitates assembly and maintenance. More importantly, the reflector 120 is fixed to the lamp housing 1 rather than a moving part, preventing it from wobbling with the pitch of the lamp plate mounting base 6, ensuring a stable reflected light field, and not affecting the freedom of movement of the lamp plate angle adjustment mechanism.

[0031] like Figure 8 , Figure 9 , Figure 11 and Figure 12 As shown, in another embodiment of this application, more preferably, it further includes an end cap 130, an embedded part 140, a screen-printed glass 150, and a sealing ring 160. The embedded part 140 is fixedly connected to the end cap 130 by bolts, and the screen-printed glass 150 is sealed and assembled between the end cap 130 and the lamp housing 1 by the sealing ring 160. This embodiment achieves reliable sealing and stable assembly of the light-emitting end of the lamp through the combination of end cap 130, embedded part 140, screen-printed glass 150 and sealing ring 160. The sealing ring 160 ensures waterproof and dustproof connection between the screen-printed glass 150 and the lamp housing 1, improving the overall protection level of the lamp. The embedded part 140 and end cap 130 are connected by bolts, which enhances the structural strength of the lamp during installation and facilitates installation and fixation. The screen-printed glass 150 has the functions of light transmission, decoration and shielding of internal structure, which improves the overall aesthetics, environmental adaptability and long-term reliability of the lamp.

[0032] Example 4 like Figure 13 As shown, in one embodiment of this application, a lamp panel angle adjustment method based on the torque transmission of a steel wire flexible shaft, applied to the lamp fixture described in any of the above embodiments, includes the following steps: Step 1, Pre-installation and positioning: The lamp plate fixing seat 6 is movably assembled into the hinge groove 72 on the inner wall of the lamp housing 1 through the T-shaped hinge 71, and the lamp plate fixing seat 6 is in the initial retracted position. At this time, the upper surface of the lamp plate is parallel to the surface of the bow-shaped accessory 73, and the lateral end of the T-shaped hinge 71 is limited to the hinge groove 72. Step 2: Establishing a torque transmission chain: The adjusting bolt 2, the flexible steel shaft 3, and the threaded head 4 with external threads are sequentially pressed together to form an integrated transmission unit. The flexible steel shaft 3 is made of multiple layers of stainless steel wire spirally wound, which has axial flexibility and circumferential torsional stiffness. The threaded head 4 is screwed into the threaded sleeve 5 fixed on the lower surface of the lamp plate fixing seat 6 to form a rotatable threaded pair. At the same time, the adjusting bolt 2 is inserted into the movable groove 11 on the outer wall of the lamp housing 1, and its two sides are slidably engaged between the limiting screws 24 to limit its axial displacement but allow circumferential rotation. Step 3: Apply directional torque and trigger angle adjustment: Apply a clockwise or counterclockwise rotational torque to the drive groove 21 of the adjusting bolt 2 using an external tool. This rotational torque is transmitted to the threaded head 4 in pure torque form without gap via the flexible steel wire shaft 3. Due to the elastic compression / release effect generated by the flexible steel wire shaft 3 when subjected to torque, the torsional potential energy stored inside it causes the threaded head 4 to rotate relative to the threaded sleeve 5. Step 4: Converting rotational motion into pitching motion: The rotation of the threaded head 4 causes the threaded sleeve 5 to have a slight displacement tendency along its axis. However, since the threaded sleeve 5 is rigidly connected to the lamp plate fixing seat 6, and the lamp plate fixing seat 6 is hinged to the lamp housing 1, this displacement tendency is converted into a torque output around the hinge center, thereby driving the lamp plate fixing seat 6 together with the lamp plate 8 on it to pitch up or down relative to the lamp housing 1. Step 5: Implement angle limiting and self-locking control: During the pitching process, the T-shaped hinge 71 slides within the travel port of the hinge groove 72. When the lamp plate fixing seat 6 reaches the ±15° limit angle, the T-shaped hinge 71 abuts against the boundary of the travel port to achieve mechanical limiting. At the same time, the damping ring 22 on the outer periphery of the adjusting bolt 2 forms a friction pair with the inner wall of the lamp housing 1, providing a static holding torque when no external force is continuously applied, so that the lamp plate 8 can achieve self-holding positioning without additional locking mechanism at any intermediate angle position. Step 6: Complete the precise setting of the illumination angle: According to the spatial requirements of the target illumination area, repeat S3-S5 until the optical axis of the lamp points to the required pitch angle. At this time, the steel wire flexible shaft 3 maintains a constant pre-tight torque, and the rotating platform is in a stable and balanced state, completing the non-contact, continuously adjustable and position-locking adjustment process of the lamp panel 8 angle. The lamp panel angle adjustment method of this embodiment achieves pure torque transmission without backlash through the steel wire flexible shaft 3, accurately converting the external rotation operation into the pitch movement of the lamp panel fixing seat 6. It does not require a motor or complex transmission structure and is suitable for sealed, ultra-thin, and embedded lamps. It utilizes the synergistic effect of the threaded pair and the hinge constraint to efficiently convert the slight axial displacement trend into a controllable pitch movement within a range of ±15°. Mechanical limiting is achieved through the stroke port to prevent overtravel damage. At the same time, the friction pair formed by the damping ring 22 and the inner wall of the lamp housing 1 provides static holding torque, so that the lamp panel fixing seat 6 is self-locked at any intermediate angle without the need for an additional locking mechanism. The entire adjustment process is simple to operate, responsive, and reliable in positioning. It has high precision, high stability, and maintenance-free characteristics, effectively solving the pain points of difficult adjustment, easy drift, and complex structure in the prior art, and significantly improving the installation adaptability and user experience of embedded smart lamps.

[0033] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the present invention specification and drawings, or directly or indirectly applied to other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A lamp panel angle adjustment mechanism, which is disposed inside a lamp housing and connected to the inner wall of the lamp housing, characterized in that: The lamp panel angle adjustment mechanism includes an adjusting bolt, a flexible steel wire shaft, a threaded head, and a threaded sleeve. One end of the flexible steel wire shaft is pressed and fixedly connected to the adjusting bolt, and the other end of the flexible steel wire shaft is pressed and fixedly connected to the threaded head. The threaded head has an external thread, and the threaded sleeve has an internal thread. The threaded head can be threadedly connected to the threaded sleeve. A lamp panel fixing seat is fixedly connected to the side surface of the threaded sleeve near the lamp panel, and the lamp panel fixing seat is hinged to the inner wall of the lamp housing. When the adjusting bolt is rotated by an external force, the elastic space of the flexible steel shaft can be compressed or released, the torque of the flexible steel shaft increases or decreases, and the torque of the flexible steel shaft can be transmitted to the threaded head. Under the action of the torque of the flexible steel shaft, the threaded head can rotate within the threaded sleeve. Under the dragging action of the threaded sleeve, the lamp plate fixing seat can move up and down around the hinge of the lamp housing, thereby realizing the lamp plate angle adjustment function.

2. The lamp panel angle adjustment mechanism according to claim 1, characterized in that: One end of the adjusting bolt is provided with a drive groove, and the outer periphery of the other end of the adjusting bolt is provided with a damping ring. A limit groove is provided between the adjusting bolt and the damping ring. A set of limit screws is slidably engaged in the limit groove. The limit screws are provided inside the lamp housing.

3. The lamp panel angle adjustment mechanism according to claim 1, characterized in that: The flexible steel wire shaft is made of multiple steel wires wound in layers, and the material of the flexible steel wire shaft is stainless steel, galvanized steel or alloy steel.

4. A rotating platform, said rotating platform comprising the lamp panel angle adjustment mechanism as described in any one of claims 1-3, characterized in that: The rotating platform also includes a lamp plate fixing seat and a hinge assembly. The lamp plate fixing seat is movably connected to the inner wall of the lamp housing through the hinge assembly. The hinge assembly includes a T-shaped hinge and a hinge groove. One end of the T-shaped hinge is integrally formed and connected to the lamp plate fixing seat, and the other end of the T-shaped hinge is movably connected to the hinge groove, which is disposed on the inner wall surface of the lamp housing.

5. A rotating platform according to claim 4, characterized in that: Along the axial direction of the lamp housing, an arc-shaped fitting is fitted at the upper end of the hinge groove. The arc-shaped fitting covers the upper port of the hinge groove, so that the end of the T-shaped hinge member away from the lamp plate fixing seat is confined within the hinge groove. Along the radial direction of the lamp housing, a travel port is provided on the side of the hinge groove away from the lamp housing. The travel port communicates with the upper port of the hinge groove. The travel port accommodates the end of the T-shaped hinge member away from the lamp housing to move within the hinge groove. The lamp plate fixing seat can perform an up-and-down pitch movement of -15° to +15° around the inner wall of the lamp housing.

6. A lamp, characterized in that: include: lamp housing; The rotating platform of claim 4 is installed inside the lamp housing; Along the axial direction of the lamp housing, a movable groove is provided on the outer wall of the lamp housing. The movable groove communicates with the interior of the lamp housing. The adjusting bolt, the flexible steel wire shaft, and the threaded head are sequentially connected and pass through the movable groove. The threaded head is threadedly connected to the threaded sleeve on the lower surface of the lamp plate fixing seat. The lamp panel mounting base has a retracted position and an extended position. When the lamp panel mounting base is in the retracted position, the upper surface of the lamp panel mounting base is parallel to the surface of the bow-shaped accessory. When the lamp panel mounting base is in the extended position, the lamp panel mounting base is separated from the bow-shaped accessory. A set of limiting screws, the limiting screws passing through the outer surface of the lamp housing into the movable groove, the limiting screws slidingly engaging with both sides of the adjusting bolt; The lamp body includes at least a lamp plate and lamp beads, the lamp plate is assembled on the upper surface of the lamp plate mounting base, and the lamp beads are welded to the upper surface of the lamp plate.

7. A lamp according to claim 6, characterized in that: It includes a COB lens and a lens holder, wherein the COB lens is assembled inside the lens holder, and the lens holder is fixedly assembled on the lamp plate mounting base.

8. A lamp according to claim 7, characterized in that: It also includes a radar grille and a reflector. The radar grille is assembled and connected to the lamp plate mounting base, and the radar grille is located on the light-emitting surface of the COB lens. The reflector is a hollow reflective ring, and the reflector is fitted over the COB lens, the lens frame and the radar grille. The inner circumference of the light-emitting end of the lamp housing is provided with a set of assembly slots, and the outer circumference of the reflector is provided with a set of assembly blocks. The assembly blocks and the assembly slots can be matched and inserted into each other, so that the reflector can be fixed on the inner circumference of the lamp housing.

9. A lamp according to claim 8, characterized in that: It also includes an end cap, an embedded part, a screen-printed glass, and a sealing ring. The embedded part is fixedly connected to the end cap by bolts, and the screen-printed glass is sealed between the end cap and the lamp housing by the sealing ring.

10. A method for adjusting the angle of a lamp panel based on the torque transmission of a flexible steel wire shaft, applied to a lamp as described in any one of claims 6-9, characterized in that, Includes the following steps: S1. Pre-installation positioning: The lamp plate fixing seat is movably assembled into the hinge groove on the inner wall of the lamp housing through the T-shaped hinge, and the lamp plate fixing seat is in the initial retracted position. At this time, the upper surface of the lamp plate is parallel to the surface of the bow-shaped accessory, and the lateral end of the T-shaped hinge is limited to the hinge groove. S2. Establishing a torque transmission chain: The adjusting bolt, the flexible steel shaft, and the threaded head with external threads are sequentially pressed together to form an integrated transmission unit. The flexible steel shaft is made of multiple layers of stainless steel wire spirally wound, which has axial flexibility and circumferential torsional stiffness. The threaded head is screwed into the threaded sleeve fixed to the lower surface of the lamp plate fixing seat to form a rotatable threaded pair. At the same time, the adjusting bolt is inserted into the movable groove on the outer wall of the lamp housing, and its two sides are slidably engaged between the limiting screws to limit its axial displacement but allow circumferential rotation. S3. Apply directional torque and trigger angle adjustment: Apply clockwise or counterclockwise rotational torque to the drive groove of the adjusting bolt through an external tool. This rotational torque is transmitted to the threaded head in pure torque form without gap via the flexible steel wire shaft. When the flexible steel wire shaft is subjected to torque, it generates an elastic compression / release effect. The torsional potential energy stored inside it causes the threaded head to rotate relative to the threaded sleeve. S4. Converting rotational motion into pitching motion: The rotation of the threaded head causes the threaded sleeve to produce a slight displacement tendency along its axis. The threaded sleeve is rigidly connected to the lamp plate fixing seat, and the lamp plate fixing seat is hinged to the lamp housing. This displacement tendency is converted into a torque output around the hinge center, thereby driving the lamp plate fixing seat and the lamp plate on it to pitch up or down relative to the lamp housing. S5. Implementation of Angle Limiting and Self-Locking Control: During the pitching process, the T-shaped hinge slides within the travel port of the hinge slot. When the lamp panel mounting base reaches the ±15° limit angle, the T-shaped hinge abuts against the boundary of the travel port, achieving mechanical limiting. At the same time, the damping ring on the outer periphery of the adjusting bolt forms a friction pair with the inner wall of the lamp housing, providing a static holding torque when no external force is continuously applied, enabling the lamp panel to achieve self-holding positioning without an additional locking mechanism at any intermediate angle position. S6. Complete the precise setting of the illumination angle: Based on the spatial requirements of the target illumination area, repeat S3-S5 until the optical axis of the lamp points to the required pitch angle. At this time, the steel wire flexible shaft maintains a constant pre-tight torque, and the rotating platform is in a stable and balanced state, completing the non-contact, continuously adjustable and position-locking adjustment process of the lamp panel angle.

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