A lighting device

Abstract

The present invention provides a lighting device, comprising a plurality of heat sinks stacked in sequence and arranged at intervals, a rotating assembly passing through the heat sinks along the overlapping direction of the heat sinks, and a plurality of light-emitting assemblies respectively arranged on the sides of the corresponding heat sinks. The rotating assembly comprises a plurality of rotating shafts arranged in sequence along the overlapping direction of the heat sinks, and some adjacent two rotating shafts can rotate relative to each other around a rotation axis parallel to the overlapping direction of the heat sinks. Each heat sink is fixedly connected to the corresponding rotating shaft, so that some heat sinks and the light-emitting assemblies thereon can rotate synchronously with the corresponding rotating shaft, and the lighting angles of the plurality of light-emitting assemblies can be adjusted, so that multi-angle lighting can be performed in the lighting device, which greatly improves the versatility of the lighting device.

Description

Technical Field

[0001] The present invention belongs to the field of lighting technology, and more specifically, relates to a lighting device. Background Art

[0002] With the development of technology, lighting devices with a large coverage area, such as HID (High Intensity Discharge) lamps, have been widely used. However, the lighting angles of existing lighting devices are all single and fixed, and the versatility of the lighting devices is low, making them difficult to adapt to different application scenarios. Summary of the Invention

[0003] An object of the embodiments of the present invention is to provide a lighting device to solve the technical problems of the lighting devices in the prior art, such as single lighting angle and low versatility.

[0004] To achieve the above-mentioned purpose, the technical solution adopted by the present invention is to provide a lighting device, comprising:

[0005] A plurality of heat dissipating elements, wherein the plurality of heat dissipating elements are stacked in sequence and arranged at intervals;

[0006] a rotating assembly passing through the heat sink along the stacking direction of the heat sinks, the rotating assembly comprising a plurality of rotating shafts sequentially arranged along the stacking direction of the heat sinks; and

[0007] A plurality of light-emitting components are respectively arranged on the side surfaces of the corresponding heat sinks;

[0008] Partially adjacent two rotating shafts can rotate relative to each other around a rotation axis parallel to the stacking direction of the heat sinks, and each heat sink is fixedly connected to the corresponding rotating shaft.

[0009] In one embodiment, the lighting device further includes a fixing member spaced apart from the heat sink, the fixing member extending along the stacking direction of the heat sink, and a portion of the heat sink is fixed on the fixing member.

[0010] In one embodiment, the heat dissipation elements separated from the fixing element and the heat dissipation elements fixed to the fixing element are staggered along the stacking direction of the heat dissipation elements.

[0011] In one embodiment, the rotating shaft includes a body and a lower cover, both of which are hollow inside.

[0012] In each of the rotating shafts, the body and the lower cover are fixedly connected together along the superposition direction of the heat sinks, so that the corresponding heat sink is sandwiched between the body and the lower cover;

[0013] Between two adjacent rotating shafts, the lower cover of one rotating shaft is rotatably connected to the body of the other rotating shaft.

[0014] In one embodiment, the body is provided with a first baffle, the lower cover is provided with a second baffle corresponding to the first baffle, and the heat sink is provided with a first sink groove and a second sink groove on opposite sides along the stacking direction thereof;

[0015] When the body and the lower cover are assembled together, the heat sink is sandwiched between the first baffle and the second baffle, and the first baffle is embedded in the first sink, and the second baffle is embedded in the second sink.

[0016] In one embodiment, the lower cover of the rotating shaft is provided with a third sinking groove, and the bottom surface of the third sinking groove is provided with a third baffle;

[0017] Among the two adjacent rotating shafts, the third sinking groove of the lower cover of one rotating shaft is sleeved on the body of the other rotating shaft, and the side wall of the body of the other rotating shaft is arranged between the inner wall of the corresponding third sinking groove and the third baffle.

[0018] In one embodiment, the rotating assembly further includes a plurality of sealing rings respectively sleeved on the corresponding bodies;

[0019] In two adjacent rotating shafts, the sealing ring is interference-fitted between the inner wall of the corresponding third sink groove and the side wall of the main body of the rotating shaft.

[0020] In one embodiment, a protrusion is provided on the side wall of the body of the rotating shaft inwardly along the radial direction;

[0021] When the lower cover of one of the two adjacent rotating shafts rotates relative to the body of the other rotating shaft, the third baffle abuts against the protrusion to limit the rotation angle of the rotating shaft.

[0022] In one embodiment, the lighting device further includes a power box and a driving assembly disposed in the power box, the driving assembly is electrically connected to the light-emitting assembly, and the power box is rotatably connected to a rotating shaft at one end of the rotating assembly.

[0023] In one embodiment, the lighting device further includes a lamp holder assembly fixedly connected to the power box, and the lamp holder assembly is electrically connected to the driving assembly.

[0024] The present invention provides a lighting device, comprising a plurality of heat sinks stacked in sequence and arranged at intervals, a rotating assembly passing through the heat sinks along the stacking direction of the heat sinks, and a plurality of light-emitting assemblies respectively arranged on the sides of the corresponding heat sinks. The rotating assembly comprises a plurality of rotating shafts arranged in sequence along the stacking direction of the heat sinks, and some adjacent two rotating shafts can rotate relative to each other around a rotation axis parallel to the stacking direction of the heat sinks. Each heat sink is fixedly connected to the corresponding rotating shaft, so that some heat sinks and the light-emitting assemblies thereon can rotate synchronously with the corresponding rotating shaft, and the lighting angles of the plurality of light-emitting assemblies can be adjusted, so that multi-angle lighting can be performed in the lighting device, which greatly improves the versatility of the lighting device. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0026] Figure 1 A schematic diagram of the three-dimensional structure of a lighting device provided in an embodiment of the present invention;

[0027] Figure 2 A schematic diagram of the exploded structure of a lighting device provided in an embodiment of the present invention;

[0028] Figure 3 Schematic diagram of the exploded structure of the rotating shaft of the lighting device and its corresponding heat sink provided by an embodiment of the present invention Figure 1 ;

[0029] Figure 4 Schematic diagram of the exploded structure of the rotating shaft of the lighting device and its corresponding heat sink provided by an embodiment of the present invention Figure 2 ;

[0030] Figure 5 This is a schematic cross-sectional structural diagram of a lighting device provided by an embodiment of the present invention.

[0031] Among them, the reference numerals in the figures are:

[0032] 100 - heat sink; 110 - first sink; 120 - second sink; 130 - slot; 200 - rotating assembly; 210 - shaft; 211 - body; 2111 - first baffle; 2112 - bump; 212 - lower cover; 2121 - second baffle; 2122 - third sink; 2123 - third baffle; 213 - second locking member; 214 - sealing ring; 300 - light emitting assembly; 310 -lampshade; 311-clip; 320-lamp board; 400-power box; 410-box body; 411-rotating drum; 412-accommodating groove; 420-cover body; 421-hollow cavity; 430-third locking member; 440-fixing member; 450-first locking member; 500-drive assembly; 600-lamp head assembly; 610-fixing seat; 620-lamp head; 630-pressure plate; 650-fourth locking member. DETAILED DESCRIPTION

[0033] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0034] It should be noted that when an element is referred to as being “fixed on” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0035] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0036] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature identified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0037] See also Figure 1 and Figure 2 The embodiment of the present invention provides a lighting device, comprising a plurality of heat sinks 100 and a plurality of light emitting components 300, combined with Figure 2 and Figure 5 Multiple heat sinks 100 are stacked and spaced apart, and multiple light-emitting assemblies 300 are disposed on the sides of corresponding heat sinks 100. This increases the area of ​​contact between the heat sink 100 and the air medium, effectively improving the heat dissipation performance of the heat sink 100 and enabling the heat sink 100 to quickly transfer the heat generated by the light-emitting assemblies 300 to the environment. In this embodiment, the light-emitting assemblies 300 are disposed on the side of one side of the heat sink 100. Of course, depending on the actual situation and specific needs, the light-emitting assemblies 300 can also be disposed on the side of opposite sides of the heat sink 100. This is not a limitation here.

[0038] Specifically, combined Figure 2 and Figure 5 The lighting device also includes a rotating assembly 200, which passes through the heat sink 100 along the stacking direction of the heat sink 100. The rotating assembly 200 includes a plurality of rotating shafts 210 arranged in sequence along the stacking direction of the heat sink 100, and some adjacent two rotating shafts 210 can rotate relative to each other around the rotation axis 210 parallel to the stacking direction of the heat sink 100. Each heat sink 100 is fixedly connected to the corresponding rotating shaft 210. In this way, some heat sinks 100 and the light-emitting components 300 thereon can rotate synchronously with the corresponding rotating shaft 210, and the lighting angles of the multiple light-emitting components 300 can be adjusted, so that the lighting device can be multi-angled, greatly improving the versatility of the lighting device. In this embodiment, the heat sink 100 is mounted outside the corresponding rotating shaft 210. Of course, according to the actual situation and specific needs, the heat sink 100 can also be set on the rotating shaft 210 in other ways, which is not limited here.

[0039] As an optional embodiment of the present invention, heat sink 100 may be, but is not limited to, aluminum. Compared to other materials, aluminum has better heat dissipation performance and is inexpensive, which can reduce the manufacturing cost of the lighting device. It is understood that the specific material of heat sink 100 can be appropriately modified based on actual circumstances and specific needs, and is not intended to be a single limitation herein.

[0040] As an optional embodiment of the present invention, the lighting device includes six heat sinks 100 and six light-emitting assemblies 300, each light-emitting assembly 300 being disposed on the side of a corresponding heat sink 100. Accordingly, the rotating assembly 200 includes six rotating shafts 210 that are rotatably connected in sequence, with each heat sink 100 being sleeved around a corresponding rotating shaft 210. It will be understood that the number of heat sinks 100, light-emitting assemblies 300, and rotating shafts 210 can be appropriately adjusted based on actual needs and requirements, and is not intended to be a single limitation herein.

[0041] Further, as a specific embodiment of the present invention, Figure 1 and Figure 2 As shown, the lighting device further includes a fixing member 440 spaced apart from the heat sink 100. The fixing member 440 extends along the stacking direction of the heat sink 100, and a portion of the heat sink 100 is fixed to the fixing member 440. In this structure, by fixing a portion of the heat sink 100 to the fixing member 440, the light-emitting assembly 300 of the portion of the heat sink 100 emits light at a specific angle, meeting the user's usage requirements.

[0042] It should be noted that, since the heat sink 100 is fixed on the fixing member 440 , this part of the heat sink 100 cannot rotate; for the heat sink 100 set separately from the fixing member 440 , it can rotate through the rotating shaft 210 .

[0043] Specifically, in the lighting device of the embodiment of the present invention, there are two fixing members 440, each of which is disposed on opposite sides of the heat sink 100. The heat sinks 100 disposed separately from the fixing members 440 and the heat sinks 100 secured to the fixing members 440 are staggered along the stacking direction of the heat sinks. With this structure, when the heat sink 100 disposed separately from the fixing members 440 is rotated, the heat sink 100 secured to the fixing members 440 does not rotate, thereby simplifying the lighting angle adjustment operation of the lighting device. It is understood that the number of fixing members 440 can be appropriately adjusted based on actual selection and specific needs, and is not a single limitation herein.

[0044] As an optional embodiment of the present invention, Figure 2 As shown, the lighting device also includes a first locking member 450, which is used to fix a portion of the heat sink 100 to the fixing member 440. The first locking member 450 can be, but is not limited to, a screw. The threaded end of the first locking member 450 passes through the fixing member 440 and is threadedly connected to the heat sink 100, thereby fixing the corresponding heat sink 100 to the fixing member 440. In this embodiment, for the heat sink 100 fixedly connected to the fixing member 440, the light-emitting components 300 thereon emit light toward the same side. In this arrangement, by rotating the heat sink 100 separated from the fixing member 440, the light-emitting components 300 of the lighting device can emit light from the same side, achieving 180° to 360° lighting. It is understandable that, based on actual selection and specific needs, part of the heat sink 100 and the fixing member 440 can be fixedly connected together in other ways, and this is not the only limitation here.

[0045] Further, as a specific embodiment of the present invention, Figure 3 and Figure 4As shown, the shaft 210 includes a body 211 and a lower cover 212, both of which are hollow. In each shaft 210, the body 211 and the lower cover 212 are fixedly connected together along the superposition direction of the heat sink 100, so that the corresponding heat sink 100 is sandwiched between the body 211 and the lower cover 212, so that when the shaft 210 rotates, the corresponding heat sink 100 can also rotate synchronously; and combined with Figure 5 Between two adjacent rotating shafts 210 , the lower cover 212 of one rotating shaft 210 is rotatably connected to the body 211 of the other rotating shaft 210 , thereby making the two adjacent rotating shafts 210 rotatably connected.

[0046] Further, as a specific embodiment of the present invention, Figure 3 and Figure 4 As shown, the body 211 is provided with a first baffle 2111, and the lower cover 212 is provided with a second baffle 2121 corresponding to the first baffle 2111. The heat sink 100 is provided with a first recessed groove 110 and a second recessed groove 120 on opposite sides along the stacking direction. When the body 211 and the lower cover 212 are assembled together, the heat sink 100 is sandwiched between the first baffle 2111 and the second baffle 2121, with the first baffle 2111 embedded in the first recessed groove 110 and the second baffle 2121 embedded in the second recessed groove 120. In this structure, the first baffle 2111 matches the shape of the first recessed groove 110, and the second baffle 2121 matches the shape of the second recessed groove 120, ensuring a tight connection between the body 211, the heat sink 100, and the lower cover 212. When the rotating shaft 210 rotates, the corresponding heat sink 100 can also rotate synchronously. It is understandable that, according to actual conditions and specific needs, other methods may be used to enable the rotating shaft 210 and the heat sink 100 to rotate synchronously, and this is not the only limitation.

[0047] Further, as a specific embodiment of the present invention, Figure 3 and Figure 4 As shown, the rotating assembly 200 also includes a plurality of second locking members 213 for fixing the body 211 and the lower cover 212 of the same rotating shaft 210 together. The second locking members 213 can be, but are not limited to, screws. In this structure, the threaded ends of the second locking members 213 pass through the lower cover 212 along the stacking direction of the heat sink 100 and are then threadedly connected to the body 211, thereby fixing the body 211 and the lower cover 212 together. It is understood that, depending on the actual situation and specific needs, the body 211 and the lower cover 212 can be fixed together using other methods, and this is not limited to the exclusive method here.

[0048] Further, as a specific embodiment of the present invention, Figures 3 to 5As shown, the lower cover 212 of the rotating shaft 210 defines a third recess 2122, and a third baffle 2123 is provided on the bottom surface of the third recess 2122. Of two adjacent rotating shafts 210, the third recess 2122 of the lower cover 212 of one rotating shaft 210 is sleeved outside the body 211 of the other rotating shaft 210, and the sidewall of the body 211 of the other rotating shaft 210 is positioned between the inner wall of the corresponding third recess 2122 and the third baffle 2123, thereby rotatably connecting the two adjacent rotating shafts 210. It is understood that, depending on actual circumstances and specific needs, the two adjacent rotating shafts 210 may be rotatably connected using other methods, and this is not intended to be a single limitation.

[0049] Further, as a specific embodiment of the present invention, Figures 3 to 5 As shown, the rotating assembly 200 further includes a plurality of sealing rings 214, each sleeved on a corresponding body 211. For two adjacent rotating shafts 210, the sealing rings 214 are interference-fitted between the inner wall of the corresponding third recess 2122 and the sidewall of the body 211 of the rotating shaft 210. This structure provides elasticity to the sealing rings 214, which not only ensures a sealed connection between the two adjacent rotating shafts 210 but also provides radial compressive force, ensuring that the third recess 2122 of the lower cover 212 of the rotating shaft 210 is stably sleeved on the body 211 of the adjacent rotating shaft 210 without disengagement, thereby improving the reliability of the lighting device. Under this structure, when the lower cover 212 of the rotating shaft 210 rotates a certain angle relative to the main body 211 of the other rotating shaft 210, the sealing ring 214 provides a radial extrusion force, which generates a certain static friction force between the inner wall of the third groove 2122 and the main body 211. In the absence of external force, the lower cover 212 of the rotating shaft 210 will not rotate relative to the main body 211 of the other rotating shaft 210.

[0050] Furthermore, as a specific embodiment of the present invention, a protrusion 2112 is radially inwardly projected from the sidewall of the body 211 of the rotating shaft 210. When the lower cover 212 of one of the rotating shafts 210 rotates relative to the body 211 of the other rotating shaft 210, the third baffle 2123 abuts the protrusion 2112 to limit the rotation angle of the rotating shaft 210. In this embodiment of the present invention, the body 211 of each rotating shaft 210 is provided with two protrusions 2112 at intervals. When the lower cover 212 of one rotating shaft 210 rotates clockwise relative to the body 211 of the other rotating shaft 210, the third baffle 2123 abuts one of the protrusions 2112. When the lower cover 212 of one rotating shaft 210 rotates counterclockwise relative to the body 211 of the other rotating shaft 210, the third baffle 2123 abuts the other protrusion 2112. Thus, the rotation angle of the rotating shaft 210 can be limited.

[0051] As an optional embodiment of the present invention, the angle range of the relative rotation of the two rotating shafts 210 can be 0° to 180°. Of course, according to the actual situation and specific needs, the angle range of the relative rotation of the two rotating shafts 210 can be appropriately adjusted and is not limited here.

[0052] Further, as a specific embodiment of the present invention, Figure 2 As shown, the light-emitting assembly 300 includes a lampshade 310 fixedly connected to the side of the heat sink 100 and a lamp board 320 sandwiched between the lampshade 310 and the heat sink 100. The lamp board 320 can be, but is not limited to, an LED (Light Emitting Diode) lamp board 320. In this structure, the lampshade 310 covers the surface of the lamp board 320, and the lampshade 310 can protect the lamp board 320 from being damaged.

[0053] Further, as a specific embodiment of the present invention, Figures 2 to 4 As shown, the lampshade 310 is provided with a plurality of latches 311, and the heat sink 100 is provided with slots 130 corresponding to the latches 311. By snapping the latches 311 of the lampshade 310 onto the slots 130 of the heat sink 100, the lampshade 310 and the heat sink 100 are engaged and connected. With this structure, the assembly between the lampshade 310 and the heat sink 100 is simplified, which can simplify the assembly process of the lampshade 310 and the heat sink 100 and improve assembly efficiency. It is understood that the lampshade 310 and the heat sink 100 can be connected in other ways according to actual conditions and specific needs, and this is not limited to this.

[0054] Further, as a specific embodiment of the present invention, Figure 2 As shown, the lighting device also includes a power box 400 and a driving component 500 disposed in the power box 400 and used to control the light board 320. The driving component 500 can be but is not limited to a control circuit board. The driving component 500 is electrically connected to the light-emitting component 300. The power box 400 is rotatably connected to the rotating shaft 210 at one end of the rotating component 200, and the fixing part 440 is disposed on the side of the power box 400 close to the rotating component 200.

[0055] Specifically, if Figure 2 and Figure 5As shown, the power supply box 400 includes a box body 410 and a cover 420 disposed on a side of the box body 410 away from the rotating assembly 200. The rotating shaft 210 at one end of the rotating assembly 200 is rotatably connected to the side of the box body 410 away from the cover 420. The fixing member 440 is disposed on the side of the box body 410 away from the cover 420. The box body 410 has a receiving groove 412 with an opening toward the cover 420. The cover 420 covers the opening of the receiving groove 412. The driving assembly 500 is disposed in the receiving groove 412. With this structure, the driving assembly 500 can be protected from damage such as scratches. In this embodiment, the power box 400 further includes a third locking member 430 for connecting the box body 410 and the cover body 420. The third locking member 430 may be, but is not limited to, a bolt. The threaded end of the third locking member 430 passes through the cover body 420 and the drive assembly 500 in sequence and is then threadedly connected to the box body 410, thereby fixing the box body 410 and the cover body 420 together. It is understood that, depending on the actual situation and specific needs, the box body 410 and the cover body 420 may be fixedly connected together using other methods, and this is not limited to this method.

[0056] Specifically, if Figure 2 As shown, a hollow rotating drum 411 is provided at one end of the box body 410 close to the rotating shaft 210. In the rotating shaft 210 set close to the box body 410, the third groove 2122 of the lower cover 212 is sleeved on the outside of the rotating drum 411, and the side wall of the rotating drum 411 is set between the inner wall of the corresponding third groove 2122 and the third baffle 2123, so that the rotating shaft 210 set close to the box body 410 is rotatably connected to the rotating drum 411.

[0057] Further, as a specific embodiment of the present invention, Figure 2 As shown, the lighting device also includes a lamp head assembly 600 fixedly connected to the power box 400 (cover body 420), the lamp head assembly 600 is electrically connected to the driving assembly 500, and the lamp head assembly 600 is used to connect to an external lamp holder to provide power for the lighting device of the embodiment of the present invention.

[0058] Specifically, the lamp holder assembly 600 includes a fixing base 610 connected to the cover 420 and a lamp holder 620 connected to the fixing base 610. The lamp holder 620 is electrically connected to the driving assembly 500. One end of the fixing base 610 may be, but is not limited to, threadedly connected to the lamp holder 620. Specifically, the lamp holder 620 is disposed on a side of the cover 420 away from the box body 410. The cover 420 defines a hollow cavity 421 extending axially therethrough. The fixing base 610 is sleeved within the hollow cavity 421, with one end exposed from an opening of the hollow cavity 421 away from the box body 410 and threadedly connected to the lamp holder 620.

[0059] More specifically, the inner diameter of the hollow cavity 421 is gradually tapered from the lamp head 620 toward the box body 410, and the lamp head 620 is clamped at the end of the hollow cavity 421 with a smaller inner diameter. The lamp head assembly 600 also includes a pressure plate 630 provided on the side of the fixing seat 610 away from the lamp head 620. The pressure plate 630 is fixedly connected to the hollow cavity 421 through a fourth locking member 650. The fourth locking member 650 can be but is not limited to a screw. The threaded end of the fourth locking member 650 passes through the pressure plate 630 and is threadedly connected to the cover body 420, so that the fixing seat 610 will not fall out from the end with a larger inner diameter of the hollow cavity 421, ensuring that the fixing seat 610 is stably connected to the cover body 420.

[0060] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A lighting device, characterized in that: include: A plurality of heat dissipating elements, wherein the plurality of heat dissipating elements are stacked in sequence and arranged at intervals; a rotating assembly passing through the heat sink along the stacking direction of the heat sinks, the rotating assembly comprising a plurality of rotating shafts sequentially arranged along the stacking direction of the heat sinks; as well as A plurality of light-emitting components are respectively arranged on the side surfaces of the corresponding heat sinks; Partially, two adjacent rotating shafts can rotate relative to each other around a rotation axis parallel to the stacking direction of the heat sinks, and each heat sink is fixedly connected to the corresponding rotating shaft; The rotating shaft includes a body and a lower cover, both of which are hollow inside; In each of the rotating shafts, the body and the lower cover are fixedly connected together along the superposition direction of the heat sinks, so that the corresponding heat sink is sandwiched between the body and the lower cover; Between two adjacent rotating shafts, the lower cover of one rotating shaft is rotatably connected to the body of the other rotating shaft; The body is provided with a first baffle, the lower cover is provided with a second baffle corresponding to the first baffle, and the heat sink is provided with a first sink groove and a second sink groove on opposite sides along the stacking direction thereof; the first baffle is adapted to the shape of the first sink groove, and the second baffle is adapted to the shape of the second sink groove; When the body and the lower cover are assembled together, the heat sink is sandwiched between the first baffle and the second baffle, and the first baffle is embedded in the first sink, and the second baffle is embedded in the second sink; The lower cover of the rotating shaft is provided with a third sinking groove, and the bottom surface of the third sinking groove is provided with a third baffle; Among the two adjacent rotating shafts, the third sinking groove of the lower cover of one rotating shaft is sleeved on the body of the other rotating shaft, and the side wall of the body of the other rotating shaft is arranged between the inner wall of the corresponding third sinking groove and the third baffle.

2. The lighting device according to claim 1, wherein The lighting device further includes a fixing member spaced apart from the heat sink. The fixing member extends along the stacking direction of the heat sink, and a portion of the heat sink is fixed on the fixing member.

3. The lighting device according to claim 2, wherein: The heat dissipation members separated from the fixing member and the heat dissipation members fixed to the fixing member are alternately arranged along the superimposed direction of the heat dissipation members.

4. The lighting device according to claim 1, wherein The rotating assembly further includes a plurality of sealing rings respectively sleeved on the corresponding bodies; In two adjacent rotating shafts, the sealing ring is interference-fitted between the inner wall of the corresponding third sink groove and the side wall of the main body of the rotating shaft.

5. The lighting device according to claim 1, wherein The side wall of the main body of the rotating shaft is provided with a protrusion protruding radially inward; When the lower cover of one of the two adjacent rotating shafts rotates relative to the body of the other rotating shaft, the third baffle abuts against the protrusion to limit the rotation angle of the rotating shaft.

6. The lighting device according to any one of claims 1 to 5, characterized in that: The lighting device further includes a power supply box and a driving component disposed in the power supply box. The driving component is electrically connected to the light-emitting component. The power supply box is rotationally connected to a rotating shaft at one end of the rotating component.

7. The lighting device according to claim 6, wherein: The lighting device further includes a lamp holder assembly fixedly connected to the power supply box, and the lamp holder assembly is electrically connected to the driving assembly.

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