An LED lamp with a modular detachable heat sink

Abstract

This invention belongs to the field of LED lighting technology, specifically an LED lighting fixture employing a modular, detachable heat sink. The proposed solution includes a lamp frame, a lamp board, a control base, and a lampshade. The lampshade is fixed to the top outer wall of the lamp frame. The lamp board and control base are installed inside the lamp frame. A heat sink frame is detachably connected to the bottom of the lamp frame. Fixed heat sink fins are installed on all four side walls of the heat sink frame. A back shell is detachably connected to the bottom of the heat sink frame. Multiple movable heat sink fins are arranged around the perimeter of the back shell, spaced apart from the fixed heat sink fins. The movable heat sink fins can move vertically. This invention improves airflow inside the lighting fixture by allowing the movable heat sink fins, spaced apart from the fixed heat sink fins, to move back and forth vertically, thus creating an alternating arrangement between the movable and fixed heat sink fins. This also improves the heat exchange and cooling efficiency around the lighting fixture.

Description

Technical Field

[0001] This invention relates to the field of LED lighting technology, and in particular to an LED lighting fixture employing a modular, detachable heat sink. Background Technology

[0002] LED lights have been widely used in various lighting fields due to their advantages such as high efficiency, energy saving and long life. During use, a lot of heat is generated during the light emission process. If the heat cannot be dissipated in a timely and effective manner, it will cause a series of problems such as accelerated light decay, shortened life and color temperature drift. Therefore, heat dissipation performance is a key factor that determines the performance and reliability of LED lights.

[0003] In existing technologies, cooling is generally achieved through natural cooling via the casing or fins, which is slow and inefficient. Alternatively, heat dissipation is achieved through ventilation with a fan and external environment, but this can easily lead to the entry of external dust, affecting the normal operation of the lamps and fans over a long period of time. Summary of the Invention

[0004] Based on the technical problems in the background art, the present invention proposes an LED lamp with a modular and detachable heat sink.

[0005] This invention proposes an LED lamp with a modular, detachable heat sink, comprising a lamp frame, a lamp board, a control base, and a lamp cover. The lamp cover is fixed to the top outer wall of the lamp frame, and the lamp board and control base are installed inside the lamp frame. A heat sink frame is detachably connected to the bottom of the lamp frame, and fixed heat sink fins are installed on all four sides of the heat sink frame. A back shell is detachably connected to the bottom of the heat sink frame, and multiple movable heat sink fins are arranged around the four sides of the back shell. The movable heat sink fins are spaced apart from the fixed heat sink fins, and the movable heat sink fins can move vertically.

[0006] Preferably, an electric push rod is installed on the inner wall of the bottom end of the back shell, and a lifting frame is connected to the top of the electric push rod. The movable heat dissipation fins are fixed to the lifting frame. A temperature sensor and a microprocessor are installed inside the back shell. When the temperature sensor detects that the ambient temperature is higher than a set threshold, it sends a signal to the microprocessor and controls the electric push rod to move the lifting frame and the movable heat dissipation fins back and forth.

[0007] Preferably, the outer wall of the lamp frame is provided with slots at positions corresponding to the fixed heat dissipation fins, the fixed heat dissipation fins are adapted to the slots at the corresponding positions, and the fixed heat dissipation fins extend horizontally toward the inside of the heat dissipation frame.

[0008] Preferably, the outer side of the heat dissipation frame is provided with an annular groove, and the portion that fixes the heat dissipation fins extends into the annular groove.

[0009] Preferably, the four corners of the outer wall of the lamp frame are provided with notches, and the four corners of the top of the heat dissipation frame are provided with protruding keys, which are adapted to the notches.

[0010] Preferably, an inner groove is provided at the middle position of the top of the back shell, and an outer groove with a U-shaped structure is provided at the bottom of the back shell. The outer groove is located around the inner groove, and a sliding groove is provided at the top of the outer groove, so that the outer wall of the movable heat dissipation fins slides in contact with the inner wall of the sliding groove.

[0011] Preferably, a mounting bracket is installed between the lamp panel and the control base, and airflow disturbance components are installed on all four sides of the control base at the bottom of the mounting bracket. The airflow disturbance components are located at the bottom of the control base.

[0012] Preferably, the airflow disturbance component is provided with a horizontally extending rotating shaft, which is perpendicular to the extension direction of the fixed heat dissipation fins. Multiple fan blades are fixed on the outer wall of the rotating shaft, and both ends of the outer wall of the rotating shaft are rotatably connected to a fixing frame through bearings. The top of the fixing frame is fixed to the mounting frame.

[0013] Preferably, a gear is fixed to one end of the outer circumference of the rotating shaft, and a toothed plate is installed at the top of the lifting frame at the position corresponding to the gear. A toothed block that meshes with the gear is fixed on the side of the toothed plate facing the gear. When the toothed plate rises to the top and falls to the bottom, the toothed block on the side of the toothed plate does not contact the gear.

[0014] Preferably, the gear plate is located on the side of the gear away from the control base.

[0015] The beneficial effects of this invention are as follows: In this invention, by moving the movable heat dissipation fins, which are spaced apart from the fixed heat dissipation fins, back and forth in the vertical direction, the movable heat dissipation fins and the fixed heat dissipation fins are staggered to improve the gas flow inside the lamp and also improve the heat exchange and cooling efficiency around the lamp, thereby improving the heat dissipation effect of the lamp and ensuring the effectiveness of the lamp for long-term use, and effectively reducing the lamp damage due to overheating.

[0016] In this invention, by having fixed heat dissipation fins and movable heat dissipation fins partially located outside the lamp, the heat exchange and cooling effect with the outside can be improved, thereby enhancing the cooling and heat dissipation efficiency under both static and dynamic conditions.

[0017] In this invention, during the rotation of the rotating shaft carrying the fan blades, the interactive flow effect between the airflow around and below the control base is increased, thereby improving the heat exchange and cooling effect between the airflow inside the lamp and the fixed and movable heat dissipation fins. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of an LED lamp with a modular and detachable heat sink proposed in this invention; Figure 2 This is an exploded view of the overall structure of an LED lamp with a modular and detachable heat sink proposed in this invention. Figure 3 This is a schematic diagram of the overall planar cross-sectional structure of an LED lamp with a modular and detachable heat sink proposed in this invention; Figure 4 This is a schematic diagram of the fixed and movable heat dissipation fins distribution structure of an LED lamp with a modular and detachable heat sink proposed in this invention. Figure 5 This is a schematic diagram of the mounting bracket structure for an LED lamp with a modular and detachable heat sink, as proposed in this invention. Figure 6 This is a schematic diagram of the pivot position structure of an LED lamp with a modular and detachable heat sink proposed in this invention. Figure 7 This is a schematic diagram of the frame structure of an LED lamp with a modular and detachable heat sink proposed in this invention; Figure 8 This is a schematic diagram of a heat sink frame structure for an LED lamp with a modular and detachable heat sink, as proposed in this invention. Figure 9 This is a schematic diagram of the lifting frame structure of an LED lamp with a modular and detachable heat sink proposed in this invention; Figure 10 This is a schematic diagram of the inner groove position structure of the back shell of an LED lamp fixture using a modular and detachable heat sink, as proposed in this invention. Figure 11 This is a schematic diagram of the outer groove position structure of the back shell of an LED lamp fixture using a modular and detachable heat sink, as proposed in this invention. Figure 12 This is a schematic diagram of the mesh cover position structure of an LED lamp with a modular and detachable heat sink proposed in this invention.

[0019] In the diagram: 1. Lamp frame, 101. Slot, 102. Notch, 2. Lamp board, 3. Control base, 4. Lamp cover, 5. Slot, 6. Heat sink frame, 601. Annular groove, 602. Raised key, 7. Fixed heat sink fins, 8. Back cover, 801. Inner groove, 802. Outer groove, 803. Slide groove, 9. Movable heat sink fins, 10. Lifting frame, 11. Electric push rod, 12. Mesh cover, 13. Shaft, 14. Fan blade plate, 15. Fixing bracket, 16. Gear, 17. Gear plate, 18. Mounting bracket. Detailed Implementation

[0020] Example 1: Refer to Figures 1-12An LED lamp with a modular, detachable heat sink includes a lamp frame 1, a lamp board 2, a control base 3, and a lamp shade 4. It should be noted that this application uses the lamp board 2 with the LEDs facing upwards as an example for ease of describing the positions of the various structures within the lamp, and is not a specific limitation on the use of the lamp. The lamp can be rotated for replacement and is not necessarily used vertically. The lamp shade 4 is fixed to the top outer wall of the lamp frame 1. The lamp board 2 and the control base 3 are installed inside the lamp frame 1. Specifically, a mounting bracket 5 is fixed to the inner wall of the lamp frame 1 near the lamp shade 4, and the lamp board 2 is fixed in the mounting bracket 5 with the LEDs of the lamp board 2 facing the lamp shade 4. The control base 3 is used for circuit connection to control the lamp board 2 and is installed at a position of the lamp board 2 away from the lamp shade 4. A heat sink frame 6 is detachably connected to the bottom of the lamp frame 1. Heat sink fins 7 are installed on all four sides of the heat sink frame 6. A back cover 8 is detachably connected to the bottom of the heat sink frame 6. Multiple movable heat dissipation fins 9 are provided around the entire luminaire. The movable heat dissipation fins 9 are spaced apart from the fixed heat dissipation fins 7. The movable heat dissipation fins 9 can move vertically. During use, the appropriate method can be selected according to the application environment of the luminaire: In low-temperature environments or when overheating will not occur, only the heat dissipation frame 6 and the fixed heat dissipation fins 7 are used, and the fixed heat dissipation fins 7 are used for natural cooling; In high-temperature environments or when the internal temperature is likely to rise, both the fixed heat dissipation fins 7 and the movable heat dissipation fins 9 are used simultaneously. When the temperature rises, the movable heat dissipation fins 9, which are spaced apart from the fixed heat dissipation fins 7, move back vertically, thereby increasing the air circulation inside the luminaire by alternating between the movable heat dissipation fins 9 and the fixed heat dissipation fins 7. This also improves the heat exchange and cooling efficiency around the luminaire, thereby improving the heat dissipation effect of the luminaire and ensuring its effectiveness for long-term use, effectively reducing the risk of damage to the luminaire due to overheating.

[0021] In this invention, an electric push rod 11 is installed on the inner wall of the bottom end of the back shell 8. The top end of the electric push rod 11 is connected to a lifting frame 10. The movable heat dissipation fins 9 are fixed to the lifting frame 10. A temperature sensor and a microprocessor are installed inside the back shell 8. When the temperature sensor detects that the ambient temperature is higher than a set threshold, it sends a signal to the microprocessor and controls the electric push rod 11 to move the lifting frame 10 and the movable heat dissipation fins 9 back and forth. When the temperature returns to below the threshold, the back and forth movement stops and the movable heat dissipation fins 9 are lowered to the lowest possible position. This allows the movable heat dissipation fins 9 and the fixed heat dissipation fins 7 to be staggered in the static state to ensure air circulation. This enables the active reciprocating motion of the movable heat dissipation fins 9 to improve the cooling effect in the overheated state and ensures the heat exchange and cooling effect of air circulation in the static state. Furthermore, the fixed heat dissipation fins 7 and the movable heat dissipation fins 9 can be reused through modular disassembly. Compared with replacing the lamp board 2, which requires changing the circuit connection, directly replacing the heat dissipation frame 6 and the back shell 8 is more convenient for ordinary users to replace.

[0022] In this invention, slots 101 are provided on the outer walls of the lamp frame 1 at positions corresponding to the fixed heat dissipation fins 7. The bottom of the slots 101 is open and the two sides of the slots 101 are penetrating. The fixed heat dissipation fins 7 are adapted to the slots 101 at the corresponding positions. The fixed heat dissipation fins 7 extend horizontally toward the inside of the heat dissipation frame 6, so that the fixed heat dissipation fins 7 cover the four sides of the lamp frame 1 and the heat dissipation frame 6 in the vertical direction at the same time, thereby improving the heat exchange coverage rate in the natural state, thereby improving the cooling effect under static conditions.

[0023] In this invention, the outer side of the heat dissipation frame 6 is provided with a ring groove 601 of a U-shape structure. A through groove is opened on the upper part of the heat dissipation frame 6 at the position corresponding to the fixed heat dissipation fin 7. The through groove extends from the top of the ring groove 601 and to the side of the ring groove 601 facing inwards from the heat dissipation frame 6. The fixed heat dissipation fin 7 is fixed to the inner wall of the through groove. A part of the fixed heat dissipation fin 7 extends into the ring groove 601. In actual use, the fixed heat dissipation fin 7 is pre-fixed to the heat dissipation frame 6. During installation, the fixed heat dissipation fin 7 is inserted into the slot 101 of the lamp frame 1, and the heat dissipation frame 6 and the lamp frame 1 are fixed to seal the slot 101. Thus, the inside of the fixed heat dissipation fin 7 covers the lamp frame 1 and the heat dissipation frame 6. The outer part of the fixed heat dissipation fin 7 is located in the outer ring groove 601. Moreover, the part of the fixed heat dissipation fin 7 in the ring groove 601 is not only the edge of the fixed heat dissipation fin 7 on the outside, but also the two sides of the fixed heat dissipation fin 7 are in contact with the external environment. This can improve the heat exchange and cooling effect with the outside, thereby improving the cooling effect of the static fixed heat dissipation fin 7 in its natural state.

[0024] In this invention, notches 102 are provided at the four corners of the outer wall of the lamp frame 1. The bottom of the notches 102 is open. The four corners of the top of the heat dissipation frame 6 are provided with integrally formed protruding keys 602. The protruding keys 602 are adapted to the notches 102. After the protruding keys 602 and the notches 102 are fastened together between the heat dissipation frame 6 and the lamp frame 1, the protruding keys 602 and the notches 102 overlap and remain flush with the thickness of the lamp frame 1 and the heat dissipation frame 6. The protruding keys 602 and the notches 102 are fixed together, which facilitates modular disassembly and installation while avoiding the thickening of the overlapping part, which would affect the static heat exchange and cooling effect.

[0025] In this invention, an inner groove 801 is formed at the middle of the top of the back shell 8, and the inner groove 801 communicates with the heat sink frame 6. The electric push rod 11 is installed in the inner groove 801. An outer groove 802 with a U-shape structure is formed at the bottom of the back shell 8. The bottom end of the outer groove 802 is open and the top end of the outer groove 802 is sealed. The outer groove 802 is located around the inner groove 801. A sliding groove 803 is formed at the top of the outer groove 802. The outer wall of the movable heat sink fin 9 slides in contact with the inner wall of the sliding groove 803, and the vertical movement range of the bottom end of the movable heat sink fin 9 is inside the outer groove 802. That is, the movable heat sink fin 9 will not detach downward from the outer groove 802 nor move downward. Since the upper part is detached from the sliding groove 803, during use, the movable heat dissipation fin 9 moves vertically back and forth between the adjacent fixed heat dissipation fins 7 at intervals, so that the internal airflow interacts to improve the heat exchange and cooling effect between the fixed heat dissipation fins 7 and the movable heat dissipation fin 9. The outer part of the movable heat dissipation fin 9 moves back and forth at the position of the outer groove 802 to improve the heat dissipation and cooling effect of the movable heat dissipation fin 9. It should be further noted that the bottom of the back shell 8 is detachably connected to the position corresponding to the outer groove 802, so as to ensure the flow of external air between the outer groove 802 and the outside, while avoiding collision damage or affecting the long-term use of the movable heat dissipation fin 9.

[0026] Example 2: Refer to Figures 1-12 An LED lamp with a modular and detachable heat sink, based on embodiment 1, has a mounting bracket 18 installed between the lamp panel 2 and the control base 3. The mounting bracket 18 has multiple through-ventilation slots for ventilation and cooling of the back of the lamp panel 2. Airflow disturbance components are installed on the four sides of the bottom of the mounting bracket 18 at the control base 3. The airflow disturbance components are located at the bottom of the control base 3 and are used to increase the airflow interaction between the four sides and the center of the lamp frame 1.

[0027] In this invention, the airflow disturbance component is provided with a horizontally extending rotating shaft 13, which is perpendicular to the extension direction of the fixed heat dissipation fins 7. Multiple fan blades 14 are fixed to the outer wall of the rotating shaft 13. Specifically, multiple fixing sleeves are fixed to the outer wall of the rotating shaft 13, and multiple fan blades 14 are fixed to the outer wall of each fixing sleeve. Both ends of the outer wall of the rotating shaft 13 are rotatably connected to a fixing frame 15 through bearings. The top of the fixing frame 15 is fixed to the mounting frame 18, thereby realizing the installation of the rotating shaft 13. The axis of the rotating shaft 13 is located near the bottom of the control base 3, so that when the fan blades 14 rotate above the rotating shaft 13, they are located outside the control base 3, and when the fan blades 14 rotate below the rotating shaft 13, they are located below the control base 3. Thus, during the rotation of the rotating shaft 13 with the fan blades 14, the interactive flow effect between the airflow around and below the control base 3 is increased, thereby improving the heat exchange and cooling effect between the airflow inside the lamp and the fixed heat dissipation fins 7 and the movable heat dissipation fins 9.

[0028] In this invention, a gear 16 is fixed to one end of the outer circumference of the rotating shaft 13. A toothed plate 17 is installed on the top of the lifting frame 10 at a position corresponding to the gear 16. A toothed block that meshes with the gear 16 is fixed to the side of the toothed plate 17 facing the gear 16. During the vertical reciprocating movement of the electric push rod 11 with the lifting frame 10 and the movable heat dissipation fins 9, the toothed plate 17 meshes with the gear 16 to actively drive the rotating shaft 13 to rotate, thereby causing the fan blade 14 to rotate actively to guide the airflow. When the toothed plate 17 rises to the top and falls to the bottom, the toothed block on the side of the toothed plate 17 does not contact the gear 16. Thus, when the toothed plate 17 moves vertically to the top and bottom, the gear 16 and the rotating shaft 13 are not restricted and can rotate naturally. This allows the rotating shaft 13 and the fan blade 14 to have both driven rotation and free rotation at the same time, thereby improving the effect of guiding the change of airflow movement and improving the interactive heat exchange and cooling effect between the airflow and the heat dissipation fins.

[0029] In this invention, the toothed plate 17 is located on the side of the gear 16 away from the control base 3. When the area of ​​the movable heat dissipation fin 9 overlapping with the fixed heat dissipation fin 7 increases as the toothed plate 17 meshes with the gear 16, the top of the gear 16, the shaft 13, and the fan blade 14 rotate towards the control base 3, thus guiding and dispersing the airflow around the control base 3 downwards. As the movable heat dissipation fin 9 moves downwards and disperses with the fixed heat dissipation fin 7, the fan blade 14 guides the airflow around the control base 3 toward the surrounding heat dissipation fins. In this way, by guiding the airflow through the change in the direction of the fan blade 14 and coordinating the interlacing process between the fixed heat dissipation fin 7 and the movable heat dissipation fin 9, the speed and effectiveness of cooling are improved.

[0030] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An LED lamp fixture employing a modular, detachable heat sink, comprising a lamp frame (1), a lamp plate (2), a control base (3), and a lamp shade (4), wherein the lamp shade (4) is fixed to the top outer wall of the lamp frame (1), and the lamp plate (2) and the control base (3) are installed inside the lamp frame (1), characterized in that, The bottom of the lamp frame (1) is detachably connected to a heat sink frame (6). Fixed heat sink fins (7) are installed on all four sides of the heat sink frame (6). The bottom of the heat sink frame (6) is detachably connected to a back shell (8). Multiple movable heat sink fins (9) are provided around the back shell (8). The movable heat sink fins (9) are spaced apart from the fixed heat sink fins (7). The movable heat sink fins (9) can move in the vertical direction.

2. The LED lamp with a modular, detachable heat sink according to claim 1, characterized in that, An electric push rod (11) is installed on the inner wall of the bottom end of the back shell (8). The top of the electric push rod (11) is connected to a lifting frame (10). The movable heat dissipation fins (9) are fixed to the lifting frame (10). A temperature sensor and a microprocessor are installed inside the back shell (8). When the temperature sensor detects that the ambient temperature is higher than the set threshold, it sends a signal to the microprocessor and controls the electric push rod (11) to move the lifting frame (10) and the movable heat dissipation fins (9) back and forth.

3. An LED lamp fixture employing a modular, detachable heat sink according to claim 2, characterized in that, The outer wall of the lamp frame (1) is provided with slots (101) at the positions corresponding to the fixed heat dissipation fins (7). The fixed heat dissipation fins (7) are adapted to the slots (101) at the corresponding positions, and the fixed heat dissipation fins (7) extend horizontally into the heat dissipation frame (6).

4. An LED lamp with a modular, detachable heat sink according to claim 3, characterized in that, The outer side of the heat dissipation frame (6) is provided with an annular groove (601), and the part of the heat dissipation fin (7) is inserted into the annular groove (601).

5. An LED lamp fixture employing a modular, detachable heat sink according to any one of claims 3 to 4, characterized in that, The lamp frame (1) has notches (102) at the four corners of its outer wall, and the heat sink frame (6) has protruding keys (602) at the four corners of its top, which are adapted to the notches (102).

6. An LED lamp fixture employing a modular, detachable heat sink according to any one of claims 2 to 4, characterized in that, An inner groove (801) is provided at the middle of the top of the back shell (8), and an outer groove (802) with a U-shape structure is provided at the bottom of the back shell (8). The outer groove (802) is located around the inner groove (801), and a sliding groove (803) is provided at the top of the outer groove (802). The outer wall of the movable heat dissipation fin (9) slides in contact with the inner wall of the sliding groove (803).

7. An LED lamp fixture employing a modular, detachable heat sink according to claim 6, characterized in that, An installation bracket (18) is installed between the lamp panel (2) and the control base (3). The bottom of the installation bracket (18) is located on all four sides of the control base (3) and airflow disturbance components are installed. The airflow disturbance components are located at the bottom of the control base (3).

8. An LED lamp fixture employing a modular, detachable heat sink according to claim 7, characterized in that, The airflow disturbance component is provided with a horizontally extending shaft (13), which is perpendicular to the extension direction of the fixed heat dissipation fins (7). Multiple fan blades (14) are fixed on the outer wall of the shaft (13). Both ends of the outer wall of the shaft (13) are rotatably connected to a fixing frame (15) through bearings. The top of the fixing frame (15) is fixed to the mounting frame (18).

9. An LED lamp fixture employing a modular, detachable heat sink according to claim 8, characterized in that, A gear (16) is fixed to one end of the outer circumference of the rotating shaft (13). A toothed plate (17) is installed on the top of the lifting frame (10) at the position corresponding to the gear (16). A toothed block that meshes with the gear (16) is fixed on the side of the toothed plate (17) facing the gear (16). When the toothed plate (17) rises to the top and falls to the bottom, the toothed block on the side of the toothed plate (17) does not contact the gear (16).

10. An LED lamp fixture employing a modular, detachable heat sink according to claim 9, characterized in that, The toothed plate (17) is located on the side of the gear (16) away from the control base (3).

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