An LED light source

Abstract

This utility model relates to the field of LED lighting technology and discloses an LED light source, including a light source board and a module power interface. Multiple light source boards are arrayed on the module power interface. A damping structure is movably disposed on one side of the light source board and is movably installed between the heat sink fins and the electric fan. The damping structure includes a silencing box, a spiral guide plate, damping rods, spring dampers, and a honeycomb plate. The honeycomb plate is fixedly disposed in the center of the silencing box, and the spiral guide plate is fixedly disposed on the outside of the silencing box. A damping rod is fixedly disposed between each of the four sides of the electric fan and the silencing box. Four spring dampers are arrayed between the bottom of the electric fan and the silencing box. The silencing box is fixedly installed inside the heat sink fins. The vibration generated by the electric fan during operation is transmitted to the spring dampers and the damping rods on the four sides through the mounting plate for reduction. The cooperation between the guide post and the guide ring avoids excessive shaking and extends the service life of the device.

Description

Technical Field

[0001] This utility model belongs to the field of LED lighting technology, specifically, it relates to an LED light source. Background Technology

[0002] LED is a solid-state semiconductor device that directly converts electrical energy into light energy through the recombination of electrons and holes in a PN junction. Its core consists of P-type and N-type semiconductors, forming a PN junction structure.

[0003] The prior art discloses a durable LED light source module (CN219976260U), including a circuit board and detachable LED light groups on the circuit board; a light-transmitting cover is provided above the circuit board and LED light groups, and a heat dissipation base is provided below the circuit board. The heat dissipation base includes a housing and a heat dissipation plate disposed within the housing; the circuit board and LED light groups are mounted on the heat dissipation plate, and the light-transmitting cover is installed on the top of the housing of the heat dissipation base; the LED light groups are mounted on the circuit board through a plug-in structure and are powered by contacting contacts and pins. When a single LED chip fails, the faulty chip can be quickly replaced by simply pulling it out of the circuit board. Moreover, the LED light source module is also provided with a heat dissipation base, which directs the heat generated by the circuit board to a heat sink through the heat dissipation plate, and then the heat sink is cooled by a fan, which dissipates heat from the circuit board, slows down aging, and improves the durability of the LED light source module.

[0004] Research revealed that the mechanical vibration of the fan during operation is directly transmitted to the LED light assembly through the rigidly connected heat sink, causing fatigue of the lamp core solder joints and chip displacement. After long-term use, the luminous efficiency decreases. The turbulent airflow at the side-by-side fan inlet and outlet can easily generate turbulent noise. When combined with the vibration noise, it cannot meet the requirements of quiet environments such as libraries, hospitals, and residences.

[0005] In view of this, this utility model is proposed. Utility Model Content

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0007] An LED light source, including

[0008] The light source board and module power interface are provided. Multiple light source boards are arrayed on the module power interface. Multiple sets of LED lamps with equal spacing are installed on one side of the light source board. Heat dissipation fins and electric fans for heat dissipation of LED lamps are detachably installed on the other side of the light source board.

[0009] A vibration damping structure is movably disposed on one side of the light source plate and movably installed between the heat sink fins and the electric fan. The vibration damping structure includes a silencing box, a spiral guide plate, damping rods, spring dampers, and a honeycomb plate. The honeycomb plate is fixedly disposed inside the center of the silencing box, the spiral guide plate is fixedly disposed on the outside of the silencing box, a damping rod is fixedly disposed between each of the four sides of the electric fan and the silencing box, and four spring dampers are arranged in an array between the bottom of the electric fan and the silencing box. The silencing box is fixedly installed inside the heat sink fins.

[0010] In a preferred embodiment of this utility model, the heat dissipation fins and the electric fan are positioned directly opposite the LED chip, the silencing box is fixedly installed at the center of the heat dissipation fins by bolts, and the electric fan is movably positioned inside the silencing box at the end away from the heat dissipation fins.

[0011] In a preferred embodiment of this utility model, a spiral guide plate is embedded between the silencing box and the heat dissipation fins, a silencing cavity is formed between the inner bottom surface of the silencing box and the honeycomb plate, and the electric fan is movably disposed between the honeycomb plate and the silencing box.

[0012] In a preferred embodiment of this utility model, the inner curved surface of the silencing box away from the silencing cavity is provided with serrations, and the serrated side of the silencing box is connected to the four sides of the electric fan through damping rods.

[0013] In a preferred embodiment of this utility model, the silencing box has multiple air-expanding holes arranged in a ring array inside. The air-expanding holes penetrate the silencing box and communicate with the silencing cavity. The air-expanding holes are conical holes, and the side of the air-expanding hole closer to the inside of the silencing box is smaller than the outside.

[0014] In a preferred embodiment of the present invention, a guide ring is fixedly provided at the center of the honeycomb panel, and four collars are fixedly arranged in an array on the honeycomb panel, with the four collars being equally spaced around the guide ring.

[0015] In a preferred embodiment of this utility model, a spring damper is installed through the collar, a guide post slides through the guide ring, four spring dampers are fixedly arranged between the mounting plate and the silencing cavity, and the guide post is fixedly connected to the center of the bottom surface of the mounting plate.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] 1. By setting up a shock-absorbing structure, the vibration generated by the electric fan during operation is transmitted to the spring damper through the mounting plate. The spring damper reduces the vertical vibration of the electric fan during operation, while the damping rods on the four sides of the electric fan consume the vibration in the four directions. The cooperation between the guide column and the guide ring restricts the horizontal displacement of the electric fan, avoids excessive shaking, effectively avoids fatigue damage to the LED lamp core solder joints and chip displacement, and extends the service life of the device.

[0018] 2. By setting up a silencing box, the noise from the electric fan is dispersed into multiple small sound waves through the honeycomb structure of the honeycomb panel. After entering the silencing cavity, the sound waves undergo multiple reflections, and their energy gradually decreases. Some sound waves propagate through the air expansion holes. Since the air expansion holes are conical structures, the sound waves diffuse and refract during propagation, further reducing energy loss. At the same time, the sawtooth structure on the inner curved surface of the silencing box can scatter sound waves, reducing concentrated reflections. The spiral guide plate guides the airflow smoothly, reducing noise generated by turbulence. Through the synergistic effect of multiple silencing structures, the device meets the requirements for use in quiet environments.

[0019] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0020] In the attached diagram:

[0021] Figure 1 This is a schematic diagram of the module used in this utility model;

[0022] Figure 2 This is a schematic diagram of a single light source board according to the present invention;

[0023] Figure 3 This is a schematic diagram of the heat dissipation fins and the sound-absorbing box of this utility model;

[0024] Figure 4 This is a schematic diagram of the electric fan and shock-absorbing structure of this utility model;

[0025] Figure 5 This is a schematic diagram showing the installation and disassembly of the shock-absorbing structure and the sound-absorbing box of this utility model;

[0026] Figure 6 This is a cross-sectional schematic diagram of the silencer box of this utility model.

[0027] In the diagram: 10. Light source board; 11. Module power interface; 12. LED lamp core; 13. Heat sink fins; 14. Electric fan; 15. Silencing box; 16. Spiral guide plate; 17. Collar; 18. Guide ring; 19. Damping rod; 20. Mounting plate; 21. Spring damper; 22. Guide column; 23. Honeycomb panel; 24. Air vent; 25. Silencing cavity. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model.

[0029] An LED light source, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, including

[0030] The light source board 10 and the module power interface 11 are arranged in an array. Multiple light source boards 10 are mounted on the module power interface 11. Multiple sets of LED lamp cores 12 with equal spacing are mounted on one side of the light source board 10. Heat dissipation fins 13 and electric fan 14 for heat dissipation of LED lamp cores 12 are detached and installed on the other side of the light source board 10.

[0031] The damping structure is movably mounted on one side of the light source plate 10 and between the heat sink fins 13 and the electric fan 14. The damping structure includes a silencing box 15, a spiral guide plate 16, a damping rod 19, a spring damper 21, and a honeycomb plate 23. The honeycomb plate 23 is fixedly mounted inside the center of the silencing box 15, the spiral guide plate 16 is fixedly mounted on the outside of the silencing box 15, a damping rod 19 is fixedly mounted on each of the four sides of the electric fan 14 between it and the silencing box 15, and four spring dampers 21 are arranged in an array between the bottom of the electric fan 14 and the silencing box 15. The silencing box 15 is fixedly mounted inside the heat sink fins 13.

[0032] Specifically, when the light source board 10 is working, the heat generated by the LED chip 12 is conducted to the heat sink 13 through the light source board 10, and the heat sink 13 dissipates the heat to the surrounding air; at the same time, the electric fan 14 is powered by the module power interface 11, draws in external cold air and accelerates it towards the heat sink 13, forming a heat dissipation channel where the airflow passes through the heat sink 13 and then the hot air is discharged. During this process, the vibration damping structure plays a role in vibration reduction and noise reduction.

[0033] like Figure 2 , Figure 3 and Figure 4 As shown, the heat sink 13 and the electric fan 14 are positioned directly opposite the LED chip 12. The heat sink 13 is rigidly connected to the light source board 10. The noise-absorbing box 15 is fixedly installed at the center of the heat sink 13 by bolts. The noise-absorbing box 15 is injection molded from flame-retardant ABS material. The mounting contact surface between the noise-absorbing box 15 and the heat sink 13 is provided with a high thermal conductivity silicone pad, which ensures vibration isolation without affecting heat transfer. The electric fan 14 is movably positioned inside the end of the noise-absorbing box 15 away from the heat sink 13.

[0034] like Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, a spiral guide plate 16 is embedded between the silencing box 15 and the heat dissipation fins 13. The spiral guide plate 16 is made of stainless steel sheet by precision stamping. The surface of the spiral guide plate 16 is treated with a nano coating to effectively reduce airflow friction resistance. A silencing cavity 25 is formed between the inner bottom surface of the silencing box 15 and the honeycomb plate 23. The electric fan 14 is movably arranged between the honeycomb plate 23 and the silencing box 15. The honeycomb plate 23 is made of aluminum honeycomb core material and sound-absorbing non-woven fabric composite, which has good broadband sound absorption characteristics.

[0035] like Figure 2 , Figure 3 , Figure 4 and Figure 6 As shown, the inner curved surface of the muffler box 15 away from the muffler cavity 25 is provided with serrations; as Figure 4 , Figure 5 and Figure 6 As shown, the silencer box 15 has multiple air vents 24 arranged in a ring array inside. The air vents 24 penetrate the silencer box 15 and are connected to the silencer cavity 25. The air vents 24 are conical holes, and the side of the air vent 24 closer to the inside of the silencer box 15 is smaller than the outside. This Venturi tube structure can accelerate the airflow and enhance the heat dissipation effect through the Bernoulli effect. The air vents 24 are connected to the silencer cavity 25 to form a complete airflow channel.

[0036] The working principle is as follows: the airflow discharged from the electric fan 14 first passes through the spiral guide plate 16. The spiral structure of the spiral guide plate 16 guides the airflow to rotate along the wall of the silencer box 15, reducing turbulence. Then, it passes through the air expansion hole 24. The conical hole design reduces the speed of the airflow and enters the silencer cavity 25. The porous structure of the honeycomb plate 23 in the silencer cavity 25 absorbs mid-to-high frequency noise. At the same time, the serrated sidewall of the silencer box 15 above the honeycomb plate 23 can break up large eddies and reduce low-frequency noise. The serrated sidewall of the silencer box 15, the honeycomb plate 23, the air expansion hole 24 and the silencer cavity 25 work together to reduce noise, and finally the sound of the airflow discharged from the silencer box 15 is reduced.

[0037] like Figure 2 As shown, the serrated side of the muffler box 15 is connected to the four sides of the electric fan 14 through damping rods 19. The four damping rods 19 are made of stainless steel with chrome plating. The two ends of the damping rods 19 adopt ball joint connection structure, which are connected to the outer shell of the electric fan 14 and the inner side of the muffler box 15 respectively. A guide ring 18 is fixedly provided in the center of the honeycomb plate 23. The guide ring 18 is precision machined from brass. Four collars 17 are symmetrically distributed with the guide ring 18 as the center to ensure the parallelism of the spring damper 21. Four collars 17 are fixedly arranged in an array on the honeycomb plate 23. The four collars 17 are equally spaced with the guide ring 18 as the center.

[0038] like Figure 3 and Figure 5 As shown, a spring damper 21 is installed through the collar 17. The spring damper 21 adopts a combination structure of stainless steel spring and hydraulic damper. A guide post 22 slides through the guide ring 18. Four spring dampers 21 are fixedly set between the mounting plate 20 and the silencing cavity 25. The guide post 22 is fixedly connected to the center of the bottom surface of the mounting plate 20.

[0039] The working principle is as follows: When the electric fan 14 is running, the vibration generated by the rotation of its internal motor bearings and fan blades is transmitted to the mounting plate 20 through the damping rods 19 on all four sides and the spring damper 21 at the bottom. The mounting plate 20 transmits the vibration to the honeycomb plate 23 through the guide post 22 and the collar 17. The hexagonal honeycomb structure of the honeycomb plate 23 converts the mechanical vibration energy into heat energy through the friction of the hole walls. Finally, the vibration transmitted to the heat sink fins 13 is reduced, thereby reducing the fatigue stress on the solder joints of the LED chip 12. It is worth noting that this device uses the guide post 22 and the collar 17 to guide and restrict the swaying of the electric fan 14 to all four sides. However, due to the influence of vertical vibration, the guide post 22 and the collar 17 are prone to wear and tear after long-term use, resulting in gaps. At this time, the effect of the guide post 22 in preventing swaying is minimal. At this time, the damping rods 19 on all four sides of the electric fan 14 play a greater role in shock absorption, thereby alleviating the lack of effect of the guide post 22.

[0040] It is understood that this utility model has been described through some embodiments, and those skilled in the art will recognize that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of this utility model. Furthermore, under the teachings of this utility model, these features and embodiments can be modified to adapt to specific situations and materials without departing from the spirit and scope of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the protection scope of this utility model.

Claims

1. An LED light source, characterized in that, include The light source board (10) and the module power interface (11) are provided. Multiple light source boards (10) are arrayed on the module power interface (11). Multiple sets of LED lamp cores (12) with equal spacing are installed on one side of the light source board (10). Heat dissipation fins (13) and electric fan (14) for heat dissipation of LED lamp cores (12) are detachably installed on the other side of the light source board (10). The damping structure is movably disposed on one side of the light source plate (10) and movably installed between the heat dissipation fins (13) and the electric fan (14). The damping structure includes a silencing box (15), a spiral guide plate (16), a damping rod (19), a spring damper (21), and a honeycomb plate (23). The honeycomb plate (23) is fixedly disposed in the center of the silencing box (15). The spiral guide plate (16) is fixedly disposed on the outside of the silencing box (15). A damping rod (19) is fixedly disposed between the four sides of the electric fan (14) and the silencing box (15). Four spring dampers (21) are arranged in an array between the bottom of the electric fan (14) and the silencing box (15). The silencing box (15) is fixedly installed inside the heat dissipation fins (13).

2. The LED light source according to claim 1, characterized in that, The heat dissipation fins (13) and the electric fan (14) are positioned opposite the LED light core (12). The silencing box (15) is fixedly installed in the center of the heat dissipation fins (13) by bolts. The electric fan (14) is movably positioned inside the end of the silencing box (15) away from the heat dissipation fins (13).

3. The LED light source according to claim 2, characterized in that, A spiral guide plate (16) is embedded between the silencing box (15) and the heat dissipation fins (13). A silencing cavity (25) is formed between the inner bottom surface of the silencing box (15) and the honeycomb plate (23). The electric fan (14) is movably disposed between the honeycomb plate (23) and the silencing box (15).

4. An LED light source according to claim 3, characterized in that, The inner curved surface of the silencing box (15) away from the silencing cavity (25) is provided with serrations, and the serrated side of the silencing box (15) is connected to the four sides of the electric fan (14) through damping rods (19).

5. An LED light source according to claim 4, characterized in that, The silencing box (15) has multiple air-expanding holes (24) arranged in a ring array inside. The air-expanding holes (24) penetrate the silencing box (15) and are connected to the silencing cavity (25). The air-expanding holes (24) are conical holes, and the side of the air-expanding holes (24) closer to the inside of the silencing box (15) is smaller than the outside.

6. An LED light source according to claim 5, characterized in that, A guide ring (18) is fixedly provided at the center of the honeycomb panel (23), and four collars (17) are fixedly arranged in an array on the honeycomb panel (23). The four collars (17) are arranged at equal intervals with the guide ring (18) as the center.

7. An LED light source according to claim 6, characterized in that, A spring damper (21) is installed through the collar (17), and a guide post (22) slides through the guide ring (18). The four spring dampers (21) are fixedly arranged between the mounting plate (20) and the silencing cavity (25), and the guide post (22) is fixedly connected to the center of the bottom surface of the mounting plate (20).

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