Power supply lighting assembly of display cabinet

Abstract

The invention discloses a power supply lighting assembly of a display cabinet, and relates to the field of lighting assemblys.The power supply lighting assembly comprises a mounting groove, the mounting groove is slidably connected with a moving table in the length direction, the power supply lighting assembly further comprises a mounting plate, the mounting plate is fixedly connected to the mounting groove, and ball journal seats used for being connected with ball journals are arranged at intervals in the length direction; the ball shafts are used for being fixedly connected with the lighting assembly, an adjusting wheel is installed on the moving table, and the adjusting wheel is used for driving the ball shafts to rotate and can make contact with the ball shafts in the moving process of the moving table. The mounting groove is formed in the top end of the display cabinet, the ball shaft seat on the mounting plate is connected with the ball shaft at the tail end of the spotlight, the moving table is slidably connected into the mounting groove in the length direction, and the adjusting wheel on the moving table makes contact with the surface of the ball shaft, so that the angle of the target spotlight is conveniently adjusted when the adjusting wheel rotates; electric angle adjustment of the multiple spotlights in the length direction of the display cabinet is achieved with low cost.

Description

Technical Field

[0001] This invention relates to the field of lighting components, specifically a power supply lighting component for a display case. Background Technology

[0002] The power supply and lighting components of the display case are the core system to ensure the visual effect and safety of the exhibits. Its design needs to take into account factors such as voltage type, lamp selection, heat dissipation management, safety protection and intelligent control. Spotlights are commonly used lighting fixtures in display cases. Through precise lighting, atmosphere creation and intelligent control, they can significantly improve the performance of exhibits and user experience.

[0003] In some existing display cases, spotlights are often installed around the exhibits or on the frame of the case using a damped ball-head hinge structure. When changing exhibits, the illumination angle of each spotlight needs to be adjusted manually.

[0004] Chinese Patent CN216281035U discloses an automatic tracking LED spotlight, comprising a main structure including an information processor, an LED spotlight, and a pan-tilt unit located behind the LED spotlight. The front end of the LED spotlight has an image acquisition device electrically connected to the information processor. The pan-tilt unit consists of a first movable component, a second movable component, and a rotating base. The lower end of the first movable component has a connector, and the upper end of the second movable component has symmetrically distributed locking components. A rotating shaft is located between the locking components. The connector is fitted onto the outside of the rotating shaft to rotatably connect the first and second movable components. The second movable component is located on the upper end of the rotating base and rotatably connected via the rotating shaft. A first drive motor for driving the rotating shaft is located inside the second movable component, and a second drive motor for driving the rotating shaft is located inside the rotating base. The LED spotlight is fixedly connected to the front end of the first movable component, and the information processor is placed on the upper end of the first movable component. The information processor includes a translation module, a transmission module, an analysis module, and a control module.

[0005] Regarding the aforementioned technologies, some existing technologies require manual adjustment of the illumination angle of spotlights inside display cases. When the display case is large and the spotlights are installed at a high position on the top of the case, manual adjustment of the spotlight angle is quite troublesome, and each adjustment requires opening and closing the case door. Another existing technology connects two sets of electrically driven rotating bases to the tail of the spotlight. Although this can achieve pitch and horizontal angle adjustment of a single spotlight, when applied to display cases, since there are many exhibits inside, a large number of spotlights need to be arranged along the length of the display case. If two sets of rotating bases are installed at the tail of each spotlight, it will significantly increase the manufacturing cost of the display case. In summary, the existing power supply and lighting components for display cases are not easy to achieve electric illumination angle adjustment at low cost. Summary of the Invention

[0006] Based on this, the purpose of the present invention is to provide a power supply and lighting component for a display case, so as to solve the technical problem that existing power supply and lighting components for display cases are not easy to achieve electric illumination angle adjustment at low cost.

[0007] To achieve the above objectives, the present invention provides the following technical solution: a power supply and lighting component for a display cabinet, including a mounting groove, a movable platform slidably connected to the mounting groove along its length, and a mounting plate fixedly connected to the mounting groove, and ball bearing seats for connecting ball bearings spaced apart along its length, the ball bearings being used to fixably connect the lighting component, and a movable platform, on which adjusting wheels are mounted, the adjusting wheels being used to drive the ball bearings to rotate, and being able to contact each ball bearing individually as the movable platform moves.

[0008] By adopting the above technical solution, an installation groove is set at the top of the display case, and the ball bearing at the end of the spotlight is connected to the ball bearing seat on the installation plate. The moving platform is slidably connected in the length direction in the installation groove. The adjustment wheel on the moving platform contacts the surface of the ball bearing, and the angle of the target spotlight can be easily adjusted when the adjustment wheel rotates. This achieves electric angle adjustment of multiple spotlights along the length direction of the display case at a low cost.

[0009] The invention is further configured such that a push plate is rotatably connected to the bottom end of the mounting plate at the ball bearing seat, and a limiting plate for contacting the ball bearing is fixedly connected to the push plate. A push plate is fixedly connected to the moving platform in the direction of the mounting plate. When the moving platform slides to the position of the ball bearing, the push plate can push the push plate to rotate. When the push plate is pushed by the push plate, the limiting plate can rotate in the direction away from the surface of the ball bearing. A torsion spring that can deform and store energy when the limiting plate moves away from the surface of the ball bearing is provided at the pivot of the limiting plate.

[0010] Preferably, the limiting piece can prevent the ball shaft from rotating within the ball shaft seat, thereby improving the stability of the lighting assembly.

[0011] The present invention is further configured such that the torsion spring at the pivot of the limiting piece is used to reset the limiting piece to the state of contacting the ball shaft, and the limiting piece is still in the state of deformation and energy storage when it contacts the ball shaft, and both sides of the push piece are provided with inclined surfaces for contacting the push plate.

[0012] Preferably, the spring force of the torsion spring allows the limiting piece to make tight contact with the ball bearing surface.

[0013] The present invention is further configured such that the movable platform is rotatably connected to a rotating shaft, a rotating arm is fixedly connected to the side wall of the rotating shaft, the adjusting wheel is rotatably connected to the end of the rotating arm, the adjusting wheel contacts the ball shaft, and when the axis of the rotating shaft is oriented toward the center of the ball shaft, the adjusting wheel can maintain contact with the ball shaft during the rotation of the axis of the rotating shaft.

[0014] Preferably, the rotation of the rotating arm can adjust the position of the adjusting wheel contacting the ball shaft surface, thereby enabling convenient adjustment of the pitch and horizontal angles of the lighting components.

[0015] The invention is further configured such that a positioning platform is slidably connected coaxially inside the rotating shaft, and a compression spring is provided between the end of the positioning platform and the inner wall of the rotating shaft, and the compression spring is compressed when the positioning platform contacts the ball shaft.

[0016] Preferably, the positioning stage facilitates the rapid positioning of the rotating shaft and the ball shaft after the moving stage approaches the corresponding ball shaft.

[0017] The invention is further configured such that a mounting column is coaxially connected inside the rotating shaft in the direction toward the positioning platform, the mounting column is slidably connected inside the positioning platform, and an electromagnet is installed at the end away from the moving platform. A fixed iron ring for cooperating with the electromagnet is fixedly connected to the end of the inner wall of the positioning platform near the moving platform.

[0018] Preferably, the electromagnet installed on the mounting column is energized synchronously with the second drive motor, causing the positioning platform to press against the ball shaft, thereby improving the stability of the ball shaft during the rotation of the rotating arm.

[0019] The present invention is further configured such that the moving platform is provided with a first blocking plate and a second blocking plate at an annular interval in the direction of the mounting plate, and the rotation angle range of the rotating arm is 0-90°.

[0020] Preferably, the first and second blocking plates help to accurately limit the rotation angle of the rotating arm.

[0021] The present invention is further configured such that the ball bearing seat is provided with a misalignment ring rail for avoiding the adjustment wheel within the rotation range of the rotating arm.

[0022] Preferably, interference with the movement of the adjusting wheel is effectively avoided by the ball bearing seat.

[0023] The invention is further configured such that the mounting groove is provided with a slide rail along its length, the moving platform is slidably connected to the slide rail, and is provided with a linear drive mechanism that cooperates with the slide rail.

[0024] Preferably, a linear drive mechanism is used to move the moving stage along the length of the mounting groove.

[0025] The invention is further configured such that a first drive motor for driving the moving platform to slide along the slide rail is installed on the moving platform, a second drive motor for driving the rotating shaft to rotate is also installed on the moving platform, and a third drive motor for driving the adjusting wheel to rotate is installed on the rotating arm.

[0026] Preferably, remote angle adjustment of each lighting component is achieved by controlling the operating status of each motor.

[0027] In summary, the present invention has the following main beneficial effects: This invention achieves electric angle adjustment of multiple spotlights along the length of the display case by setting an installation groove at the top of the display case, connecting the ball bearing seat on the installation plate to the ball bearing at the tail end of the spotlight, and sliding the movable platform along the length direction within the installation groove. The adjustment wheel on the movable platform contacts the surface of the ball bearing, and the angle of the target spotlight can be easily adjusted when the adjustment wheel rotates. This invention achieves electric angle adjustment of multiple spotlights along the length direction of the display case at a low cost.

[0028] This invention connects a rotating arm to a moving platform and attaches an adjusting wheel to the end of the rotating arm. By adjusting the angle of the rotating arm, the adjusting wheel can contact the top or side of the ball shaft, thereby facilitating the adjustment of the spotlight's pitch and horizontal angles and enabling convenient multi-directional angle adjustment of the spotlight.

[0029] This invention uses a rotatable limiting plate connected below the ball bearing seat to restrict the rotation of the spotlight by friction between the limiting plate and the ball bearing surface. This effectively improves the stability of the spotlight when the angle does not need to be adjusted. When the moving platform moves to the spotlight where the angle needs to be adjusted, the push plate connected to the moving platform can be used simultaneously to push the push plate fixed to the limiting plate, causing the limiting plate to separate from the ball bearing. This allows the angle of the spotlight to be conveniently adjusted using the adjusting wheel.

[0030] This invention utilizes a positioning platform that is coaxially slidably connected within a rotating shaft. By employing the elastic force of a compression spring between the end of the positioning platform and the inner wall of the rotating shaft, the positioning platform is compressed and contracted when the moving platform approaches the corresponding ball shaft, maintaining its axis toward the center of the ball shaft. This allows for rapid positioning of the moving platform, ensuring that the adjusting wheel accurately contacts the appropriate position for adjusting the ball shaft.

[0031] The present invention further improves the accuracy of the adjustment wheel for spotlight angle adjustment by installing an electromagnetic structure inside the rotating shaft. When the positioning platform contacts the ball shaft and the rotating arm needs to rotate, the magnetic force of the electromagnetic structure makes the positioning platform further press the ball shaft. This ensures the stability of the ball shaft during the rotation of the rotating arm and prevents the adjustment wheel from turning the ball shaft during the rotation of the rotating arm. Attached Figure Description

[0032] Figure 1 This is a perspective view of the spotlight angle adjustment state after the present invention is installed; Figure 2 For the present invention Figure 1 Enlarged view of A in the middle; Figure 3 This is a perspective view of the spotlight angle adjustment state after the invention is installed, from another angle. Figure 4For the present invention Figure 3 Enlarged view of B in the middle; Figure 5 This is an exploded view of the present invention; Figure 6 For the present invention Figure 5 Enlarged view of C in the middle; Figure 7 This is a perspective view of the mobile platform of the present invention; Figure 8 This is a schematic diagram of the misalignment of the ball axis between the moving platform and the spotlight body of the present invention. Figure 9 For the present invention Figure 8 Enlarged view of D; Figure 10 This is an exploded view of the spotlight body and mounting plate of the present invention; Figure 11 This is a schematic diagram of the internal structure of the rotating shaft when the positioning stage of the present invention is not in contact with the ball shaft; Figure 12 This is a schematic diagram of the internal structure of the rotating shaft when the positioning stage of the present invention is in contact with the ball shaft and the electromagnet is energized; Figure 13 This is a schematic diagram showing the invention installed inside a five-sided display case; Figure 14 This is a schematic diagram showing the state of the invention installed inside a five-sided display cabinet from another perspective.

[0033] Explanation of reference numerals in the attached figures: 1. Mounting slot; 101. Slide rail; 2. Mounting plate; 3. Moving platform; 4. Rotating shaft; 401. First blocking plate; 402. Second blocking plate; 5. Rotating arm; 6. Adjusting wheel; 7. Ball bearing seat; 701. Offset ring rail; 8. Ball bearing; 9. Spotlight body; 10. Push plate; 11. Limiting plate; 12. Push plate; 13. Positioning platform; 14. Mounting column; 15. Electromagnet; 16. Fixed iron ring; 17. First drive motor; 18. Second drive motor; 19. Third drive motor; 20. Five-sided display cabinet. Detailed Implementation

[0034] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0035] The embodiments of the present invention will now be described.

[0036] First embodiment: A power supply and lighting assembly for a display case, please refer to Figure 1-14The system includes a mounting groove 1, and a movable platform 3 is slidably connected to the mounting groove 1 along its length. Specifically, a slide rail 101 is provided along the length of the mounting groove 1, and the movable platform 3 is slidably connected to the slide rail 101. A linear drive mechanism that cooperates with the slide rail 101 is provided. The linear drive mechanism is used to move the movable platform 3 along the length of the mounting groove 1. The linear drive mechanism used in this embodiment includes a first drive motor 17.

[0037] Specifically, in this embodiment, the output end of the first drive motor 17 is connected to a roller for contacting the inner wall of the slide rail 101. The forward and reverse rotation of the first drive motor 17 controls the sliding of the moving platform 3 along the slide rail 101. In other undisclosed embodiments, the linear drive mechanism can be any structure in the prior art that is suitable for driving the moving platform 3 to slide in the mounting groove 1. This embodiment does not impose specific restrictions on it. The electrical equipment on the moving platform 3 can be powered by a conductive drag chain in the mounting groove 1.

[0038] It also includes a mounting plate 2, which is fixedly connected to the mounting groove 1, and ball bearing seats 7 for connecting ball bearings 8 are provided at intervals along the length direction. The ball bearings 8 are used to fix the lighting components. In this embodiment, the lighting components are specifically spotlight bodies 9. In this embodiment, the mounting groove 1 is specifically installed at the top of the five-sided display cabinet 20 and is obliquely downward toward the display stand of the five-sided display cabinet 20, so that the spotlight body 9 can face the display stand of the five-sided display cabinet 20 even without adjusting the angle, effectively ensuring that the pitch angle adjustment range of the spotlight body 9 can cover the display stand of the five-sided display cabinet 20. Specifically, the top surface and four sides of the five-sided display cabinet 20 are all glass.

[0039] It also includes a movable stage 3, on which an adjusting wheel 6 is installed. The adjusting wheel 6 is used to drive the ball shaft 8 to rotate and can contact each ball shaft 8 as the movable stage 3 moves. When the adjusting wheel 6 contacts the ball shaft 8, the rotation of the adjusting wheel 6 can drive the ball shaft 8 to rotate.

[0040] For details regarding the above embodiments, please refer to [link / reference]. Figure 1-6 The mounting plate 2 is rotatably connected to the bottom end of the ball bearing seat 7 with a push plate 10. The push plate 10 is fixedly connected to a limiting plate 11 for contacting the ball bearing 8. The limiting plate 11 and the push plate 10, which are fixedly connected together, can rotate around the same axis. The moving table 3 is fixedly connected to the push plate 12 in the direction of the mounting plate 2.

[0041] Specifically, when the moving platform 3 slides to the position of the ball shaft 8, the push plate 12 can push the push piece 10 to rotate. When the push piece 10 is pushed by the push plate 12, the limiting piece 11 can rotate in a direction away from the surface of the ball shaft 8. The pivot of the limiting piece 11 is provided with a torsion spring that can deform and store energy when the limiting piece 11 is away from the surface of the ball shaft 8. The elastic force of the torsion spring can make the limiting piece 11 tightly contact the surface of the ball shaft 8. The limiting piece 11 can prevent the ball shaft 8 from rotating in the ball shaft seat 7, thereby improving the stability of the lighting assembly. In this embodiment, the torsion spring is specifically a torsion spring. The torsion spring is a common existing technology in the field, and its specific structure and distance will not be described in detail here.

[0042] Furthermore, the torsion spring at the pivot of the limiting piece 11 is used to reset the limiting piece 11 to the state of contacting the ball shaft 8, and the limiting piece 11 is still in a deformation and energy storage state when it contacts the ball shaft 8. Both sides of the push piece 10 are provided with inclined surfaces for contacting the push plate 12. The push plate 12 moves from either side of the push piece 10 toward the push piece 10. After contacting the inclined surface of the push piece 10, the push piece will rotate, thereby causing the limiting piece 11 to disengage from the ball shaft 8. When the push plate 12 moves away from the push piece 10, the push piece 10 is rotated and reset by the elastic force of the torsion spring at the pivot, thereby restoring the contact between the limiting piece 11 and the ball shaft 8.

[0043] Second embodiment: A power supply and lighting assembly for a display case, please refer to Figure 1-14 Based on the first embodiment, the difference from the first embodiment is that the movable platform 3 is rotatably connected to the rotating shaft 4, the side wall of the rotating shaft 4 is fixedly connected to the rotating arm 5, and the adjusting wheel 6 is rotatably connected to the end of the rotating arm 5.

[0044] Specifically, when the adjusting wheel 6 contacts the ball shaft 8 and the axis of the rotating shaft 4 is oriented towards the center of the ball shaft 8, the adjusting wheel 6 can maintain contact with the ball shaft 8 during the rotation of the rotating shaft 4. The rotation of the rotating arm 5 can adjust the position of the adjusting wheel 6 in contact with the surface of the ball shaft 8, thereby realizing convenient adjustment of the pitch and horizontal angles of the lighting component.

[0045] For details regarding the above embodiments, please refer to [link / reference]. Figure 1-6 The mobile platform 3 is also equipped with a second drive motor 18 for driving the rotating shaft 4 to rotate, and a third drive motor 19 for driving the adjusting wheel 6 to rotate is installed on the rotating arm 5. The remote angle adjustment of each lighting component is realized by controlling the working state of each motor. In order to reduce the size of the mobile platform 3 and enable it to move smoothly in the mounting slot 1, the second drive motor 18 and the third drive motor 19 in this embodiment are both axial flux motors.

[0046] For details regarding the above embodiments, please refer to [link / reference]. Figure 1-6 , Figure 11-12 A positioning platform 13 is slidably connected coaxially inside the rotating shaft 4. A compression spring is provided between the end of the positioning platform 13 and the inner wall of the rotating shaft 4. When the positioning platform 13 contacts the ball shaft 8, the compression spring will be compressed. The positioning platform 13 facilitates the rapid positioning of the rotating shaft 4 and the ball shaft 8 after the moving platform 3 approaches the corresponding ball shaft 8.

[0047] Specifically, the end of the positioning platform 13 facing the ball shaft 8 is provided with a columnar notch instead of a plane, so that the contact surface between the positioning platform 13 and the ball shaft 8 is annular. Under the elastic force of the spring at the end of the positioning platform 13, the axis of the positioning platform 13 can be aligned with the center of the ball shaft 8, thereby realizing convenient positioning of the moving platform 3.

[0048] Third embodiment: A power supply and lighting assembly for a display case, please refer to Figure 1-14 Based on the second embodiment, the difference from the second embodiment is that a mounting column 14 is coaxially connected inside the rotating shaft 4 in the direction of the positioning platform 13. The mounting column 14 is slidably connected inside the positioning platform 13, and an electromagnet 15 is installed at the end away from the moving platform 3. A fixed iron ring 16 for cooperating with the electromagnet 15 is fixedly connected to the end of the inner wall of the positioning platform 13 near the moving platform 3. The electromagnet 15 installed on the mounting column 14 is energized synchronously with the second drive motor 18, so that the positioning platform 13 presses against the ball shaft 8, thereby improving the stability of the ball shaft 8 during the rotation of the rotating arm 5.

[0049] Specifically, after contacting the ball shaft 8, the positioning platform 13 will retract into the rotating shaft 4, but will not directly contact the mounting column 14. During the retraction process, the compression spring of the positioning platform 13 will be further compressed. When the electromagnet 15 is energized, the fixed iron ring 16 fixed on the positioning platform 13 will be attracted by the magnetic force, thereby causing the positioning platform 13 to generate a force in the direction of the ball shaft 8, thus achieving the positioning of the ball shaft 8 during the rotation of the rotating arm 5.

[0050] For details regarding the above embodiments, please refer to [link / reference]. Figure 1-7 The moving platform 3 is provided with a first blocking plate 401 and a second blocking plate 402 in a ring-shaped interval in the direction of the mounting plate 2. The rotation angle range of the rotating arm 5 is 0-90°. The first blocking plate 401 and the second blocking plate 402 are conducive to accurately limiting the rotation angle of the rotating arm 5, so that the rotating arm 5 can quickly rotate to one side or the top of the ball shaft 8, thereby realizing the rapid adjustment of the pitch angle and horizontal angle of the spotlight body 9.

[0051] For details regarding the above embodiments, please refer to [link / reference]. Figure 3-9The ball bearing seat 7 is provided with a misaligned ring rail 701 to avoid the adjustment wheel 6 within the rotation range of the rotating arm 5, which effectively prevents the ball bearing seat 7 from interfering with the movement of the adjustment wheel 6, and also prevents the adjustment wheel 6 from contacting the ball bearing seat 7 during the movement of the moving table 3.

[0052] Specifically, there is sufficient friction between the ball shaft 8 and the ball shaft seat 7 to maintain the illumination angle of the lighting component. Even when the limiting piece 11 is out of contact with the ball shaft 8, the ball shaft 8 will not rotate on its own within the ball shaft seat 7 due to the weight of the lighting component itself. When the positioning platform 13 is pressed into the rotating shaft 4 while contacting the surface of the ball shaft 8, the contact area and dynamic friction factor between the positioning platform 13 and the surface of the ball shaft 8 are small. Therefore, the positioning platform 13 will not push the ball shaft 8 to rotate when it contacts or leaves the ball shaft 8. Similarly, the process of the adjusting wheel 6 moving along the length of the moving platform 3 to contact each ball shaft 8 will not affect the ball shaft 8 due to the short contact time and small contact area. This avoids the rotation of each ball shaft 8 caused by the sliding of the moving platform 3 along the slide rail 101.

[0053] When adjusting the illumination angle of the lighting component, the present invention states: With the rotating arm 5 in contact with the first blocking plate 401, the control moving table 3 moves along the slide rail 101. When it gets close to the ball shaft 8, the push plate 12 will push the push plate 10, thereby causing the push plate 10 and the limiting plate 11 to rotate synchronously, so that the limiting plate 11 is separated from the contact with the surface of the ball shaft 8. At the same time, the adjusting wheel 6 contacts the surface of the ball shaft 8, and the third drive motor 19 works. The rotation of the adjusting wheel 6 can control the ball shaft 8 to rotate in the ball shaft seat 7, thereby adjusting the pitch angle of the lighting component. When the angle of the lighting component needs to be adjusted in the horizontal direction, the second drive motor 18 operates to rotate the rotating arm 5 toward the second blocking plate 402. At the same time as the second drive motor 18 is energized, the electromagnet 15 is energized simultaneously, and the fixed iron ring 16 is attracted by magnetic force, thereby applying a force toward the ball shaft 8 to the positioning platform 13, so that the positioning platform 13 further presses the ball shaft 8, improving the stability of the ball shaft 8 during the rotation of the rotating arm 5. After the rotating arm 5 rotates and contacts the second blocking plate 402, the third drive motor 19 drives the adjusting wheel 6 to rotate, which can control the angle of the lighting component in the horizontal direction, so that the lighting component is accurately oriented toward the position of the exhibit that needs to be illuminated. After the angle of the lighting component corresponding to the ball shaft 8 is adjusted, the rotating arm 5 returns to the position in contact with the first blocking plate 401. Then the moving table 3 can continue to move along the slide rail 101 to adjust the illumination angle of the next lighting component. When the moving table 3 leaves the corresponding ball shaft 8, the limiting plate 11 is reset by the torsion spring force to restore contact with the surface of the ball shaft 8.

[0054] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the invention and are not intended to limit it. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the invention, but such modifications, substitutions, and variations are protected by patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A power supply and lighting assembly for a display case, characterized in that, include: Mounting slot (1), wherein a movable platform (3) is slidably connected to the mounting slot (1) along the length direction; Mounting plate (2), which is fixedly connected to mounting groove (1) and has ball bearing seats (7) for connecting ball bearings (8) at intervals along the length direction. The ball bearings (8) are used to fix the lighting components. The moving platform (3) is equipped with an adjusting wheel (6), which is used to drive the ball shaft (8) to rotate and can contact each ball shaft (8) respectively as the moving platform (3) moves.

2. The power supply and lighting assembly for the display cabinet according to claim 1, characterized in that: The mounting plate (2) is rotatably connected to a push plate (10) at the bottom end of the ball bearing seat (7). The push plate (10) is fixedly connected to a limiting plate (11) for contacting the ball bearing (8). The moving platform (3) is fixedly connected to a push plate (12) in the direction of the mounting plate (2). When the moving platform (3) slides to the position of the ball bearing (8), the push plate (12) can push the push plate (10) to rotate. When the push plate (10) is pushed by the push plate (12), the limiting plate (11) can rotate in the direction away from the surface of the ball bearing (8). The pivot of the limiting plate (11) is provided with a torsion spring that can deform and store energy when the limiting plate (11) is away from the surface of the ball bearing (8).

3. The power supply and lighting assembly for the display case according to claim 2, characterized in that: The torsion spring at the pivot of the limiting piece (11) is used to reset the limiting piece (11) to the state of contacting the ball shaft (8), and the limiting piece (11) is still in the deformation energy storage state when it contacts the ball shaft (8). Both sides of the push piece (10) are provided with inclined surfaces for contacting the push plate (12).

4. The power supply and lighting assembly for the display case according to claim 1, characterized in that: The moving platform (3) is rotatably connected to a rotating shaft (4), and a rotating arm (5) is fixedly connected to the side wall of the rotating shaft (4). The adjusting wheel (6) is rotatably connected to the end of the rotating arm (5). When the adjusting wheel (6) contacts the ball shaft (8) and the axis of the rotating shaft (4) is oriented toward the center of the ball shaft (8), the adjusting wheel (6) can maintain contact with the ball shaft (8) during the rotation of the axis of the rotating shaft (4).

5. The power supply and lighting assembly for the display case according to claim 4, characterized in that: A positioning platform (13) is slidably connected coaxially inside the rotating shaft (4). A compression spring is provided between the end of the positioning platform (13) and the inner wall of the rotating shaft (4). The compression spring is compressed when the positioning platform (13) contacts the ball shaft (8).

6. The power supply and lighting assembly for the display case according to claim 5, characterized in that: The rotating shaft (4) is coaxially connected to the positioning platform (13) with a mounting column (14). The mounting column (14) is slidably connected to the positioning platform (13), and an electromagnet (15) is installed at the end away from the moving platform (3). A fixed iron ring (16) for cooperating with the electromagnet (15) is fixedly connected to the end of the inner wall of the positioning platform (13) near the moving platform (3).

7. The power supply and lighting assembly for the display case according to claim 6, characterized in that: The moving platform (3) is provided with a first blocking plate (401) and a second blocking plate (402) in a ring-shaped interval in the direction of the mounting plate (2), and the rotating arm (5) has a rotation angle range of 0-90°.

8. The power supply and lighting assembly for the display case according to claim 7, characterized in that: The ball bearing seat (7) is provided with a misaligned ring rail (701) for avoiding the adjustment wheel (6) within the rotation range of the rotating arm (5).

9. The power supply and lighting assembly for the display case according to claim 4, characterized in that: The mounting groove (1) is provided with a slide rail (101) along its length. The moving platform (3) is slidably connected to the slide rail (101) and is provided with a linear drive mechanism that cooperates with the slide rail (101).

10. The power supply and lighting assembly for the display case according to claim 9, characterized in that: The moving platform (3) is equipped with a first drive motor (17) for driving the moving platform (3) to slide along the slide rail (101), and the moving platform (3) is also equipped with a second drive motor (18) for driving the rotating shaft (4) to rotate. The rotating arm (5) is equipped with a third drive motor (19) for driving the adjusting wheel (6) to rotate.

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