A rotating spotlight

Abstract

A rotating spotlight with the same lighting effect as the direct lighting when irradiated at different angles, comprising a shell, a rotating structure and a light source arranged in the shell; a lens is installed in the rotating structure, the lens is concave in the front surface and provided with a light outlet groove, the groove bottom is provided with a first light outlet surface protruding towards the front surface, the circumferential side of the light outlet groove is provided with a second light outlet surface concave, the first light outlet surface and the second light outlet surface are both arc surfaces and adopt Fermat spiral bead surfaces; the lens is concave in the back surface and provided with a light inlet hole, the hole bottom is provided with a light inlet surface protruding towards the back surface, the light inlet surface is provided with concentric circle microstructure, the concentric circle microstructure comprises a plurality of concentric circle-shaped convex surfaces nested one inside another, the circumferential hole wall of the light inlet hole is a curved surface protruding towards the central axis of the light inlet hole, and the opening end of the circumferential hole wall is located on the outer edge of the back surface of the lens; the rotating structure comprises a rotating seat and a guide seat, the guide seat is fixedly assembled in the shell, the rotating seat can be tilted and rotated in the guide seat towards 360° direction, and the lens is fixedly installed in the rotating seat.

Description

Technical Field

[0001] This utility model relates to the field of lighting technology, and more specifically to a rotating spotlight. Background Technology

[0002] Spotlights, as a common lighting fixture, provide excellent lighting effects and are widely used in both residential and commercial settings. Unlike ordinary spotlights, spotlights require adjustment at different angles to illuminate objects and enhance their effect. Therefore, the angle adjustment mechanism is a crucial component of a spotlight. However, with conventional spotlights, the angle between the lens and the light source may change during rotation. This can lead to yellow spots or uneven light distribution, especially when the light is not directly overhead, affecting the lighting effect. When spotlights are used in commercial lighting and exhibition hall lighting, where high standards for light distribution, color temperature, and illuminance are required, the angle adjustment may prevent the spotlight from reaching the optimal lighting angle (direct illumination), resulting in insufficient lighting to meet the scene's requirements. Utility Model Content

[0003] The purpose of this invention is to provide a rotating spotlight that can precisely control light and has the advantage that the shape and effect of the light spot are basically the same as those of a direct-spot light when irradiated from different angles.

[0004] To achieve the above objectives, the rotating spotlight provided by this utility model includes: a housing, a rotating structure disposed within the housing, and a light source; A lens is installed inside the rotating structure. The lens has a light-emitting groove recessed on the front side. The bottom of the light-emitting groove has a first light-emitting surface that convexes towards the front. The side of the light-emitting groove has a second light-emitting surface that is recessed. Both the first and second light-emitting surfaces are arc surfaces and both use Fermat spiral bead surfaces. The lens has a light-entry hole recessed on the back side. The bottom of the light-entry hole has a light-entry surface that convexes towards the back side. The light-entry surface has concentric microstructures. The concentric microstructures include several layers of nested concentric convex surfaces. The circumferential wall of the light-entry hole is a curved surface that convexes towards the central axis of the light-entry hole. The opening end of the circumferential wall of the light-entry hole is located on the outer edge of the back side of the lens. The entrance aperture circumferential wall and the lens circumferential sidewall are freeform surfaces designed to achieve total internal reflection; The rotating structure includes a rotating seat and a guide seat. The guide seat is fixedly assembled inside the housing. The rotating seat can tilt and rotate in a 360° direction inside the guide seat. The lens is fixedly installed in the rotating seat. The light source is fixed directly below the entrance aperture when the lens is in a neutral position.

[0005] Furthermore, the circumferential wall of the light inlet aperture is a surface of revolution, and the angle between the generatrix of the surface of revolution and the central axis of the light inlet aperture gradually changes from the bottom of the aperture to the opening end.

[0006] Furthermore, each concentric circular convex surface in the concentric circle microstructure is an arc surface.

[0007] Furthermore, a mounting ring is provided around the second light-emitting surface of the lens in a radially outward direction, and the mounting ring is engaged with the bottom edge of the rotating seat.

[0008] Furthermore, the top edge of the rotating base is provided with a mounting stop surface, and a number of positioning grooves are radially recessed on the mounting stop surface. A number of positioning blocks are correspondingly radially protruding on the mounting ring. The positioning blocks are embedded in the positioning grooves when the lens is installed in the rotating base.

[0009] Furthermore, the inner wall of the guide seat and the outer wall of the rotating seat have an inner rotating surface and an outer rotating surface that are rotatably engaged, and the inner rotating surface and the outer rotating surface are arc-shaped spherical surfaces that fit together.

[0010] Furthermore, when the rotating seat is in the neutral position, the rotating seat, the guide seat, and the housing are coaxial; when the rotating seat rotates to the maximum angle, the bottom end of one side of the outer rotating surface is lower than the bottom edge of the inner rotating surface, and the bottom edge of the other side of the outer rotating surface is locked to the top edge of the inner rotating surface of the guide seat.

[0011] Furthermore, the guide seat includes an upper guide seat and a lower guide seat, and the inner rotating surface includes the lower inner wall of the upper guide seat and the inner wall of the lower guide seat. The upper guide seat and the lower guide seat are installed and fitted with the rotating seat from the front and rear sides, respectively.

[0012] Furthermore, the light source includes an LED lamp and a mounting bracket for mounting the LED lamp. The bottom of the housing has a bottom wall, and a mounting platform protrudes upward from the bottom wall. The mounting platform has wiring holes. The LED lamp is fixed to the top surface of the mounting platform by the mounting bracket and connected to an external power source through the wiring holes.

[0013] Furthermore, an anti-glare shield is fixedly installed on the top of the housing.

[0014] With the above-mentioned solution, the light source of this invention is fixed inside the housing, and the lens can be tilted and rotated 360° within the housing via the rotating structure. This means the angle between the light source and the lens is changeable, thereby altering the illumination angle of the spotlight. Furthermore, the lens of this invention features a large-aperture design for the light entrance, allowing it to rotate with the rotating structure without interference. The light entrance surface has concentric microstructures, which make the light passing through the light entrance surface more uniform and neutralize the yellow spots. Both the first and second light exit surfaces are curved surfaces and use Fermat spiral bead surfaces, resulting in better light mixing and maintaining a uniform light spot. The circumferential walls of the light entrance and the circumferential sidewalls of the lens are free-form surfaces for achieving total internal reflection, enabling precise light control. This ensures that the light spot quality does not significantly decrease during lens rotation with the rotating structure, and the lighting effect is essentially the same as direct lighting when illuminating at an angle. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the front structure of the lens of this utility model (the positioning block is not shown).

[0016] Figure 2 This is a schematic diagram of the back structure of the lens of this utility model (the positioning block is not shown).

[0017] Figure 3 This is a cross-sectional view of the lens of this utility model (the positioning block is not shown).

[0018] Figure 4 This is a schematic diagram of the assembly structure of this utility model.

[0019] Figure 5 This is an exploded view of the present invention.

[0020] Figure 6 This is a cross-sectional view of the present invention when it is being illuminated.

[0021] Figure 7 This is a light distribution diagram of the present invention when the light is applied directly.

[0022] Figure 8 This is a diagram of the wall washing light spot when the present invention is being illuminated.

[0023] Figure 9 This is a cross-sectional view of the present invention when the light is tilted at 25°.

[0024] Figure 10 This is a light distribution diagram of the present invention when the light is tilted at 25°.

[0025] Figure 11 This is a diagram of the wall washing light spot when the light is tilted at 25°.

[0026] Explanation of icon numbers: 1. Housing; 11. Bottom wall; 111. Mounting platform; 112. Wiring hole; 2. Rotary seat; S1. Outer rotating surface; 21. Mounting stop; 211. Positioning groove; 3 guide seat; S2 inner rotating surface; 31 upper guide seat; 32 lower guide seat; 4 Lens; 41 Light exit groove; 411 First light exit surface; 412 Second light exit surface; 42 Light entrance aperture; 421 Light entrance surface; 43 Mounting ring; a. Fermat spiral bead surface; b. Concentric circle microstructure; c. Freeform surface; 5. Light source; 51. LED light; 52. Mounting bracket; 6. Anti-glare shield. Detailed Implementation

[0027] To further explain the technical solution of this utility model, the following detailed description is provided through specific embodiments.

[0028] See Figure 4 , Figure 5This is an embodiment of the present utility model. The rotating spotlight of this embodiment includes: a housing 1, a rotating structure disposed in the housing 1, and a light source 5.

[0029] A lens 4 is installed inside the rotating structure, see reference. Figures 1 to 3 : The lens 4 has a light-emitting groove 41 recessed on the front. The bottom of the light-emitting groove 41 has a first light-emitting surface 411 protruding towards the front. The side of the light-emitting groove 41 has a second light-emitting surface 412 that is concave. Both the first light-emitting surface 411 and the second light-emitting surface 412 are arc surfaces and both use Fermat spiral bead surface a, which has a better light mixing effect and keeps the light spot uniform. The lens 4 has a recessed light entrance hole 42 on the back side, and a light entrance surface 421 protruding from the bottom of the light entrance hole 42 towards the back side. The light entrance surface 421 has a concentric circle microstructure b, which includes several nested concentric circle convex surfaces. Each concentric circle convex surface in the concentric circle microstructure b is an arc surface. This concentric circle microstructure b can make the light passing through the light entrance surface 421 more uniform and neutralize the yellow spot. The circumferential wall of the light entrance aperture 42 is a curved surface that bulges towards the central axis of the light entrance aperture 42. In this embodiment, the circumferential wall of the light entrance aperture 42 is a surface of revolution. The angle between the generatrix of the surface of revolution and the central axis of the light entrance aperture 42 gradually changes from the bottom of the aperture to the opening end. The opening end of the circumferential wall of the light entrance aperture 42 is located on the outer edge of the back of the lens 4. The light entrance aperture 42 adopts a large opening design, which can be rotated with the rotating structure without interference. The circumferential walls of the light entrance aperture 42 and the circumferential sidewalls of the lens 4 are freeform surfaces c (including the aforementioned surface of revolution) used to achieve total internal reflection, enabling precise light control.

[0030] The aforementioned lens 4 is compatible with rotating spotlights, enabling precise light control. As the lens 4 rotates with the mechanism, the light spot quality does not significantly decrease when the spotlight illuminates at different angles; the shape and effect of the light spot are essentially the same as those of a direct-spot light. (See also...) Figures 6-8 ( Figure 6 The arrows in the image represent portions of the optical path, illustrating the effect of direct lighting in this embodiment, in comparison. Figures 9-11 ( Figure 9 The arrows in the diagram indicate a portion of the optical path, illustrating the effect of lens 4 tilting at 25° when illuminating in this embodiment. It can be seen that the only difference between the two is the position of illumination in their light distribution diagrams and wall-washing light spot diagrams.

[0031] See Figure 4 , Figure 5 , Figure 6 , Figure 9 The rotating structure includes a rotating seat 2 and a guide seat 3. The guide seat 3 is fixedly assembled inside the housing 1. The rotating seat 2 can tilt and rotate in a 360° direction inside the guide seat 3, with a maximum tilt angle of 25°. The lens 4 is fixedly installed in the rotating seat 2.

[0032] Specifically, the top edge of the rotating base 2 is provided with a mounting surface 21, and the mounting surface 21 is radially recessed with a plurality of positioning grooves 211; the second light-emitting surface 412 of the lens 4 is radially protruded outward with a mounting ring 43, and the mounting ring 43 is radially protruded with a plurality of positioning blocks (not shown in the figure); when the lens 4 is installed in the rotating base 2, the mounting ring 43 is engaged below the top edge of the rotating base 2; the positioning blocks are embedded in the positioning grooves 211.

[0033] The inner wall of the guide seat 3 and the outer wall of the rotating seat 2 each have an inner rotating surface S2 and an outer rotating surface S1 that are rotatably fitted together. The inner rotating surface S2 and the outer rotating surface S1 are arc-shaped spherical surfaces that fit together, allowing the rotation of the rotating seat 2 relative to the guide seat 3 to be relatively smooth. When the rotating seat 2 rotates relative to the guide seat 3, the outer rotating surface S1 tilts along the arc of the inner rotating surface S2, but the two rotating surfaces do not separate from each other and always remain partially in contact. Specifically, when the rotating seat 2 is in the neutral position, the rotating seat 2, the guide seat 3, and the housing 1 are coaxial, and the contact area between the inner rotating surface S2 and the outer rotating surface S1 is the largest. When the rotating seat 2 rotates to its maximum angle, the bottom edge of one side of the outer rotating surface S1 is lower than the bottom edge of the inner rotating surface S2, and the bottom edge of the other side of the outer rotating surface S1 is locked to the top edge of the inner rotating surface S2 of the guide seat 3, and the contact area between the inner rotating surface S2 and the outer rotating surface S1 is the smallest.

[0034] That is, when adjusting the spotlight angle, rotation occurs between the inner rotating surface S2 and the outer rotating surface S1. Since the inner rotating surface S2 and the outer rotating surface S1 are circumferential, the rotating seat 2 of this invention can tilt and rotate in a 360° direction within the guide seat 3. The maximum tilt angle depends on the size of the inner rotating surface S2 and the outer rotating surface S1. In this embodiment, the maximum tilt angle is 25°. Here, the tilt angle refers to the position when the rotating seat 2 is not rotating and is in a neutral position (e.g., Figure 6 The central axis of ) and when rotated to the maximum angle (e.g. Figure 9 The angle between the central axis and the central axis of ( ).

[0035] Preferably, the guide seat 3 in this embodiment includes an upper guide seat 31 and a lower guide seat 32. The inner rotating surface S2 includes the lower inner wall of the upper guide seat 31 and the inner wall of the lower guide seat 32. The upper guide seat 31 and the lower guide seat 32 are respectively installed and fitted with the rotating seat 2 from the front and rear sides to facilitate the corresponding installation of the inner rotating surface S2 and the outer rotating surface S1 that fit together. The upper guide seat 31 is a frustum-shaped structure with its outer wall tapering downwards. The lower end of the upper guide seat 31 is necked and connects with the lower guide seat 32 to form a straight cylindrical section. The rotating seat 2 fits on the inner wall of the straight cylindrical section. In other embodiments, the shape of the guide seat 3 is not limited to this; it only needs to satisfy the requirement that its external shape can be installed inside the housing 1 and that the inner rotating surface S2 inside can be rotatably fitted with the rotating seat 2.

[0036] Preferably, the rotating structure can be electrically driven, and the start and stop of the drive can be controlled by a mobile APP to adjust the tilt angle of the lens 4, which enhances the flexibility and practicality of the lamp.

[0037] In this embodiment, the light source 5 is fixed directly below the light entrance hole 42 when the lens 4 is in a neutral position. Specifically, the light source 5 includes an LED lamp 51 and a mounting bracket 52 for mounting the LED lamp 51. The bottom of the housing 1 is provided with a bottom wall 11, and a mounting platform 111 is provided on the bottom wall 11. The mounting platform 111 is provided with a wiring hole 112. The LED lamp 51 is fixed on the top surface of the mounting platform 111 through the mounting bracket 52 and connected to an external power source through the wiring hole 112.

[0038] The bottom wall 11 of the housing 1 has a surrounding clearance portion around the mounting platform 111. The lower end of the rotating structure (guide seat 3, rotating seat 2) is located within the clearance portion, allowing the lower end of the rotating seat 2 to extend into the clearance portion without interference from other structures when the rotating seat 2 is tilted. The mounting platform 111 rotates into the rotating seat 2 from bottom to top and is located below the light entrance hole 42. In this embodiment, the rotating seat 2 of the lens 4 is tilted, so the angle between the light source 5 and the lens 4 can be changed, thereby changing the illumination angle of the spotlight.

[0039] Furthermore, an anti-glare shield 6 is fixedly installed on the top of the housing 1. In this embodiment, the connection structure between the anti-glare shield 6, the housing 1, and the rotating structure is existing technology (such as a snap-fit ​​structure), so it will not be described again.

[0040] The above is merely one embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A rotating spotlight, characterized in that, include: The housing, the rotating structure within the housing, and the light source; A lens is installed inside the rotating structure. The lens has a light-emitting groove recessed on the front side. The bottom of the light-emitting groove has a first light-emitting surface that convexes towards the front. The side of the light-emitting groove has a second light-emitting surface that is recessed. Both the first and second light-emitting surfaces are arc surfaces and both use Fermat spiral bead surfaces. The lens has a light-entry hole recessed on the back side. The bottom of the light-entry hole has a light-entry surface that convexes towards the back side. The light-entry surface has concentric microstructures. The concentric microstructures include several layers of nested concentric convex surfaces. The circumferential wall of the light-entry hole is a curved surface that convexes towards the central axis of the light-entry hole. The opening end of the circumferential wall of the light-entry hole is located on the outer edge of the back side of the lens. The entrance aperture circumferential wall and the lens circumferential sidewall are freeform surfaces designed to achieve total internal reflection; The rotating structure includes a rotating seat and a guide seat. The guide seat is fixedly assembled inside the housing. The rotating seat can tilt and rotate in a 360° direction inside the guide seat. The lens is fixedly installed in the rotating seat. The light source is fixed directly below the entrance aperture when the lens is in a neutral position.

2. A rotating spotlight according to claim 1, characterized in that, The circumferential wall of the light inlet aperture is a surface of revolution, and the angle between the generatrix of the surface of revolution and the central axis of the light inlet aperture gradually changes from the bottom of the aperture to the opening end.

3. A rotating spotlight according to claim 1, characterized in that, The concentric circular convex surfaces in the concentric circle microstructure are curved surfaces.

4. A rotating spotlight according to claim 1, characterized in that, The second light-emitting surface of the lens has a mounting ring that protrudes radially outward, and the mounting ring is engaged with the bottom edge of the rotating base.

5. A rotating spotlight according to claim 4, characterized in that, The top edge of the rotating base is provided with a mounting stop surface, and several positioning grooves are radially recessed on the mounting stop surface. Several positioning blocks are radially protruding on the mounting ring corresponding to the positioning grooves. The positioning blocks are embedded in the positioning grooves when the lens is installed in the rotating base.

6. A rotating spotlight according to claim 1, characterized in that, The inner wall of the guide seat and the outer wall of the rotating seat have inner and outer rotating surfaces that are rotatably fitted together. The inner and outer rotating surfaces are arc-shaped spherical surfaces that fit together.

7. A rotating spotlight according to claim 6, characterized in that, When the rotating seat is in the neutral position, the rotating seat, the guide seat and the housing are coaxial; when the rotating seat rotates to the maximum angle, the bottom end of one side of the outer rotating surface is lower than the bottom edge of the inner rotating surface, and the bottom edge of the other side of the outer rotating surface is locked to the top edge of the inner rotating surface of the guide seat.

8. A rotating spotlight according to claim 6, characterized in that, The guide seat includes an upper guide seat and a lower guide seat. The inner rotating surface includes the lower inner wall of the upper guide seat and the inner wall of the lower guide seat. The upper guide seat and the lower guide seat are installed and fitted with the rotating seat from the front and rear sides, respectively.

9. A rotating spotlight according to claim 1, characterized in that, The light source includes an LED light and a mounting bracket for mounting the LED light. The bottom of the housing has a bottom wall, and a mounting platform protrudes upward from the bottom wall. The mounting platform has wiring holes. The LED light is fixed to the top surface of the mounting platform by the mounting bracket and connected to an external power source through the wiring holes.

10. A rotating spotlight according to claim 1, characterized in that, An anti-glare shield is fixedly installed on the top of the housing.

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