A liquid cooling device for a lamp core of an LED lamp panel

Abstract

The application discloses a kind of LED lamp panel's lampwick liquid cooling device, comprising: shell, LED lamp panel, reflector cup and light transmission piece being arranged in the shell;The LED lamp panel is arranged at the bottom of the shell, the light transmission piece is arranged at the top of the shell, the shell, LED lamp panel, reflector cup and light transmission piece are jointly surrounded to form airtight sealed cavity, the side of the LED lamp panel close to the sealed cavity is provided with LED lampwick, and there is gap between the bottom of the reflector cup and the LED lamp panel;The lower end of the shell is provided with liquid inlet, and the upper end of the shell is provided with at least one liquid outlet, the liquid inlet is communicated with the liquid outlet through the sealed cavity, forms liquid flow channel for refrigerant circulation, and the refrigerant is directly contacted with the LED lampwick in the sealed cavity.Compared with prior art, the application improves the LED lampwick heat dissipation efficiency, luminous flux and service life.

Description

Technical Field

[0001] This invention relates to the field of LED lighting heat dissipation technology, and in particular to a liquid cooling device for the LED lamp core of an LED lamp board. Background Technology

[0002] High-power LED chips generate a significant amount of heat during operation. Traditional heat dissipation methods, such as substrate cooling, natural air cooling, or indirect liquid cooling, prevent the heat dissipation medium from directly contacting the LED chip's light-emitting surface. This results in a long heat dissipation path, high thermal resistance, and low cooling efficiency, easily leading to excessively high LED chip temperatures, severe light decay, and reduced luminous efficiency. Furthermore, some refrigerants in existing technologies contain corrosive components that can directly damage the phosphor layer on the LED chip's surface, shortening the LED's lifespan.

[0003] Furthermore, in existing technologies, reflectors and heat dissipation structures are usually independent of each other, resulting in low integration, complex assembly, and poor sealing. This makes it impossible to achieve direct, efficient, and safe cooling of LED chips, severely limiting the improvement of luminous output and operational stability of high-power LED chips. Summary of the Invention

[0004] The main objective of this invention is to provide a liquid cooling device for LED lamp cores, which aims to improve the heat dissipation efficiency, luminous output, and lifespan of LED lamp cores.

[0005] To achieve the above objectives, the present invention proposes a liquid cooling device for LED lamp cores, comprising: a housing, an LED lamp board, a reflector, and a light-transmitting element disposed within the housing; The LED light panel is disposed at the bottom of the housing, and the light-transmitting element is disposed at the top of the housing. The housing, LED light panel, reflector cup, and light-transmitting element together form a sealed cavity. An LED light core is disposed on the side of the LED light panel near the sealed cavity. There is a gap between the bottom of the reflector cup and the LED light panel. The lower end of the housing is provided with a liquid inlet, and the upper end of the housing is provided with at least one liquid outlet. The liquid inlet and the liquid outlet are connected through the sealed cavity to form a liquid flow channel for refrigerant circulation. The refrigerant is in direct contact with the LED chip in the sealed cavity.

[0006] A further technical solution of the present invention is that the bottom of the reflector cup is provided with a light inlet, the top of the reflector cup is provided with a light outlet, and the light inlet is closely fitted with the light-emitting surface of the LED light panel.

[0007] A further technical solution of the present invention is that the reflector cup is a tetrahedral pyramidal structure with four edges.

[0008] A further technical solution of the present invention is that the light-transmitting element is a Fresnel lens for a projector.

[0009] A further technical solution of the present invention is that the refrigerant is a liquid that does not corrode the materials of the LED core and does not damage the phosphor on the surface of the LED core.

[0010] A further technical solution of the present invention is that the refrigerant is an alkane liquid or silicone oil that does not contain chlorine, sulfur, or ammonia.

[0011] A further technical solution of the present invention is that the liquid inlet and the liquid outlet are circular.

[0012] A further technical solution of the present invention includes a liquid pump for driving the refrigerant circulation.

[0013] A further technical solution of the present invention is that a sealing ring is provided at the connection between the LED light panel and the reflector.

[0014] The beneficial effects of the liquid cooling device for the LED lamp core in this invention are: The present invention, through the above-described technical solution, includes: a housing, an LED light panel, a reflector, and a light-transmitting element disposed within the housing; the LED light panel is disposed at the bottom of the housing, and the light-transmitting element is disposed at the top of the housing; the housing, LED light panel, reflector, and light-transmitting element together form a sealed cavity; an LED chip is disposed on the side of the LED light panel near the sealed cavity; a gap exists between the bottom of the reflector and the LED light panel; a liquid inlet is disposed at the lower end of the housing, and at least one liquid outlet is disposed at the upper end of the housing; the liquid inlet and the liquid outlet are connected through the sealed cavity to form a liquid flow channel for refrigerant circulation; the refrigerant directly contacts the LED chip within the sealed cavity, allowing the refrigerant to directly contact the light-emitting surface of the LED chip, significantly shortening the heat dissipation path and reducing thermal resistance; the vertically distributed liquid inlet and outlet form a through-flow liquid flow channel, achieving continuous circulating heat dissipation, significantly reducing the working temperature of the LED chip compared to traditional indirect heat dissipation methods, effectively suppressing light decay, increasing luminous intensity, and showing no significant light decay over long-term use. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the overall structure of a preferred embodiment of the liquid cooling device for the LED lamp core of the present invention; Figure 2 This is a cross-sectional view of the overall structure of a preferred embodiment of the liquid cooling device for the LED lamp core of the present invention; Figure 3 This is a cross-sectional view of the light inlet. Figure 4 This is a cross-sectional view of the light outlet. Figure 5 This is a schematic diagram of the liquid cooling circulation flow.

[0017] Explanation of icon numbers: LED light board 100: LED light core 101; Reflective cup 200: light inlet 201; light outlet 202; liquid inlet 203; liquid outlet 204; Light-transmitting component 300; Sealed cavity 400: Refrigerant 500; 600 sealing ring; Casing 700.

[0018] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0020] In the description of this invention, it should be understood that the terms "length", "width", "thickness", "front", "rear", "left", "right", "upper", "lower", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0021] This invention proposes a liquid cooling device for the LED lamp core, such as... Figures 1 to 5 As shown, a preferred embodiment of the liquid cooling device for the LED lamp core of the present invention includes a housing 700, an LED lamp board 100, a reflector cup 200 and a light-transmitting element 300 disposed within the housing 700.

[0022] The LED light panel 100 is disposed at the bottom of the housing 700, and the light-transmitting element 300 is disposed at the top of the housing 700. The housing 700, the LED light panel 100, the reflector cup 200, and the light-transmitting element 300 together form a sealed cavity 400. An LED lamp core 101 is disposed on the side of the LED light panel 100 near the sealed cavity 400. There is a gap between the bottom of the reflector cup 200 and the LED light panel 100.

[0023] The lower end of the housing 700 is provided with a liquid inlet 203, and the upper end of the housing 700 is provided with at least one liquid outlet 204. The liquid inlet 203 and the liquid outlet 204 are connected through the sealed cavity 400 to form a liquid flow channel for the circulation of refrigerant 500. The refrigerant 500 is in direct contact with the LED lamp core 101 inside the sealed cavity 400.

[0024] It should be noted that in this embodiment, the sealed cavity 400 is filled with an optical-grade, non-corrosive refrigerant 500 for LED materials. During operation, driven by a liquid pump, the refrigerant 500 enters the sealed cavity 400 through the inlet 203, directly enveloping the LED chip 101 for heat exchange. After absorbing heat, the refrigerant 500 flows out through the outlet 204, forming a circulating heat dissipation system.

[0025] In this embodiment, the housing 700, LED lamp board 100, reflector cup 200, and light-transmitting element 300 together form a sealed cavity 400, allowing the refrigerant 500 to directly contact the light-emitting surface of the LED lamp core 101, significantly shortening the heat dissipation path and reducing thermal resistance. Combined with the upper and lower distributed inlet and outlet ports 204 to form a through-flow liquid channel, continuous circulation heat dissipation is achieved, which significantly reduces the working temperature of the lamp core (by 40% to 60%) compared to traditional indirect heat dissipation methods, effectively suppresses light decay, increases light emission (by 20% to 35%), and shows no significant light decay after long-term use.

[0026] Furthermore, in this embodiment, the bottom of the reflector 200 is provided with a light inlet 201, and the top of the reflector 200 is provided with a light outlet 202. The light inlet 201 is in close contact with the light-emitting surface of the LED light panel 100. This ensures both the efficient light-gathering and focusing efficiency of the reflector 200 and the formation of a reliable physical seal through the contact surface, preventing refrigerant 500 leakage and ensuring the stability and continuous heat dissipation of the sealed cavity 400.

[0027] Furthermore, in this embodiment, the reflector cup 200 is a tetrahedral pyramid structure with four edges.

[0028] This embodiment uses a reflector cup 200 with a four-sided cone structure. While achieving multi-sided reflection and focusing and improving the uniformity of light output, its conical inner wall can serve as a guide surface for the refrigerant 500, guiding the fluid to uniformly wrap around the lamp core, enhancing the heat exchange efficiency. It also has high structural strength and is easy to assemble and position.

[0029] Furthermore, in this embodiment, the light-transmitting element 300 is a projector Fresnel lens. Projector Fresnel lenses combine high light transmittance with excellent light-gathering performance, ensuring sufficient heat dissipation space while reducing light loss, thereby further improving the overall light output efficiency and optical quality of the device.

[0030] Furthermore, in this embodiment, the refrigerant 500 is a liquid that does not corrode the material of the LED chip 101 and does not damage the phosphor on the surface of the LED chip. This avoids chemical damage to the phosphor layer on the surface of the LED chip 101, solves the problem of traditional coolants easily causing phosphor failure and shortening the lifespan of the lamp, and ensures the long-term luminous efficacy stability of the LED.

[0031] Specifically, the refrigerant 500 is an alkane liquid or silicone oil that does not contain chlorine, sulfur, or ammonia.

[0032] Using 500 alkane or silicone oil refrigerant that is free of chlorine, sulfur, and ammonia, it has stable chemical properties and good insulation. While achieving efficient heat exchange, it can completely avoid the risk of corrosion to LED packaging materials (such as silicone, phosphor, and solder layer), thereby improving the safety and service life of the device.

[0033] Furthermore, in this embodiment, the liquid inlet 203 and the liquid outlet 204 are circular, which facilitates standardized processing and pipeline connection, reduces fluid resistance and pressure loss, and, together with the sealing ring 600, makes it easier to achieve reliable sealing, reducing processing and assembly difficulty.

[0034] Furthermore, in this embodiment, the liquid cooling device for the LED lamp core of the LED lamp panel 100 also includes a liquid pump for driving the circulation of the refrigerant 500. This embodiment adds a liquid pump as an external driving source to provide stable power for the circulation of the refrigerant 500, ensuring continuous fluid flow and uniform heat exchange in the sealed cavity 400, and avoiding localized overheating caused by natural convection.

[0035] Furthermore, in this embodiment, a sealing ring 600 is provided at the connection between the LED light panel 100 and the reflector cup 200. This further enhances the airtightness and liquid tightness of the sealed cavity 400, prevents refrigerant 500 leakage, and buffers assembly stress, thereby improving the structural reliability and durability of the device under vibration conditions.

[0036] The beneficial effects of the liquid cooling device for the LED lamp core in this invention are: The present invention, through the above-described technical solution, includes: a housing, an LED light panel, a reflector, and a light-transmitting element disposed within the housing; the LED light panel is disposed at the bottom of the housing, and the light-transmitting element is disposed at the top of the housing; the housing, LED light panel, reflector, and light-transmitting element together form a sealed cavity; an LED chip is disposed on the side of the LED light panel near the sealed cavity; a gap exists between the bottom of the reflector and the LED light panel; a liquid inlet is disposed at the lower end of the housing, and at least one liquid outlet is disposed at the upper end of the housing; the liquid inlet and the liquid outlet are connected through the sealed cavity to form a liquid flow channel for refrigerant circulation; the refrigerant directly contacts the LED chip within the sealed cavity, allowing the refrigerant to directly contact the light-emitting surface of the LED chip, significantly shortening the heat dissipation path and reducing thermal resistance; the vertically distributed liquid inlet and outlet form a through-flow liquid flow channel, achieving continuous circulating heat dissipation, significantly reducing the working temperature of the LED chip compared to traditional indirect heat dissipation methods, effectively suppressing light decay, increasing luminous intensity, and showing no significant light decay over long-term use.

[0037] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A liquid cooling device for the LED lamp core of an LED lamp panel, characterized in that, include: The housing includes an LED light panel, a reflector, and a light-transmitting element disposed within the housing. The LED light panel is disposed at the bottom of the housing, and the light-transmitting element is disposed at the top of the housing. The housing, LED light panel, reflector cup, and light-transmitting element together form a sealed cavity. An LED light core is disposed on the side of the LED light panel near the sealed cavity. There is a gap between the bottom of the reflector cup and the LED light panel. The lower end of the housing is provided with a liquid inlet, and the upper end of the housing is provided with at least one liquid outlet. The liquid inlet and the liquid outlet are connected through the sealed cavity to form a liquid flow channel for refrigerant circulation. The refrigerant is in direct contact with the LED chip in the sealed cavity.

2. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, The bottom of the reflector cup is provided with a light inlet, and the top of the reflector cup is provided with a light outlet. The light inlet is in close contact with the light-emitting surface of the LED light panel.

3. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 2, characterized in that, The reflector cup is a tetrahedral structure with four edges.

4. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, The light-transmitting component is a Fresnel lens for a projector.

5. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, The refrigerant is a liquid that does not corrode the materials of the LED core and does not damage the phosphor on the surface of the LED core.

6. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 5, characterized in that, The refrigerant is an alkane liquid or silicone oil that does not contain chlorine, sulfur, or ammonia.

7. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, The inlet and outlet are circular.

8. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, It also includes a liquid pump for driving the refrigerant circulation.

9. The liquid cooling device for the LED lamp core of the LED lamp board according to claim 1, characterized in that, A sealing ring is provided at the connection between the LED light panel and the reflector.

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