LED lamp and thermally conductive plastic housing

Abstract

The application belongs to the technical field of heat dissipation, and specifically discloses an LED lamp and a heat-conducting plastic shell. The heat-conducting plastic shell is integrally formed into a bowl-shaped main frame by heat-conducting plastic, a heat transfer part is arranged in the bowl, fins are arranged on the outer side of the main frame corresponding to the position of the heat transfer part, and a plug-in hole is further arranged on the main frame, which is integrally formed by double-color injection molding or is sealingly fixed with the connector or plug of the connector through a fixed connection mechanism. The scheme has the advantages of light quality, simple processing mode, high processing efficiency, high design freedom, and better corrosion resistance than conventional metal materials without the need for coating or painting, and the outdoor environment advantage is more obvious. The setting of the plug-in hole has better sealing effect, more convenient line insertion and extraction, abandons the traditional power line, the overall structure is more simple, the selection flexibility of the power supply line is higher, and the replacement cost is lower compared with the scheme of connecting through the power line in the traditional wire hole.

Description

Technical Field

[0001] This invention belongs to the field of heat dissipation technology, specifically relating to an LED lamp and a thermally conductive plastic housing. Background Technology

[0002] High-power LED lights (hereinafter referred to as "LED lights") used in specific scenarios (such as outdoor scenarios) are also known as work lights, searchlights, driving lights, off-road lights, engineering lights, roof lights, etc. They are commonly used on off-road vehicles, SUVs, pickup trucks, trucks, forklifts, excavators, agricultural machinery, etc., to meet the lighting needs of low-light environments. In order to extend the life of LED lights, existing technologies use metal materials (such as aluminum alloys) as housings to provide heat dissipation. However, the use of metal materials in specific scenarios often has corrosion problems. Not only does it require milling out the housing, but it also requires coating a film or paint on the surface of the metal housing. This not only makes the processing process cumbersome and costly, but also reduces the heat dissipation function of the metal housing to a certain extent. Summary of the Invention

[0003] To overcome one of the aforementioned technical problems in the prior art, the present invention aims to provide a lightweight, simple-to-process, highly efficient LED lamp and a thermally conductive plastic housing with high design flexibility, specifically achieved through the following technical solution: A thermally conductive plastic housing is integrally molded from thermally conductive plastic into a bowl-shaped main frame. A heat transfer part is provided inside the bowl, and fins are provided on the outer side of the main frame corresponding to the position of the heat transfer part. The main frame is also provided with a connector hole. The connector hole is integrally molded by two-color injection molding or sealed and fixed to the connector or plug-in through a fixed connection mechanism.

[0004] Optionally, the fixed connection mechanism includes a sealing groove and a positioning mechanism for positioning and installing the connector or plug.

[0005] Optionally, the fixed connection mechanism may further include a fixing hole for fixing the connector.

[0006] Optionally, the bottom of the sealing groove is provided with a recess.

[0007] Optionally, it may also include a mounting assembly located on the outside of the main frame for mounting the housing.

[0008] Optionally, the mounting assembly includes mounting holes and / or bushings.

[0009] Optionally, the axis of the bushing is perpendicular to the fin, and the fin is connected to the bushing.

[0010] Optionally, the mounting hole is located on the fin.

[0011] Optionally, the heat source is limited and fixed on the inner side of the main frame by a limiting mechanism and a fixing mechanism, respectively, so that the heat source is directly attached to or indirectly attached to the heat transfer part through a thermally conductive metal sheet. The heat source is a circuit board including one or more of a processor chip and LED beads. The thermally conductive metal sheet is integrally formed with the main frame through an insert injection molding process, and the heat source dissipates heat through the heat transfer part, the main frame, and the fins via the thermally conductive metal sheet.

[0012] The present invention also provides an LED lamp, comprising the thermally conductive plastic housing described in any of the foregoing technical solutions.

[0013] Compared to existing metal materials, this invention achieves advantages such as lightweight, simple processing, high processing efficiency, and high design freedom by using a one-piece molded thermally conductive plastic combined with the main frame, heat transfer part, and fins. Furthermore, it achieves superior corrosion resistance compared to conventional metal materials without the need for coating or painting, making it particularly advantageous for outdoor environments. In addition, the socket design offers better sealing and easier wire insertion and removal compared to traditional wiring methods that use power cords. Eliminating the traditional power cord results in a simpler overall structure, greater flexibility in power supply selection, and lower replacement costs. Compared to traditional metal casings, the invention is simpler to process, and the advantages of thermally conductive plastic—high design freedom, simple processing methods, and high processing efficiency—are further highlighted. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of one side of the heat transfer section of the thermally conductive plastic shell described in Example 1; Figure 2 This is a schematic diagram of one side of the thermally conductive plastic housing fins described in Example 1; Figure 3 for Figure 1 An enlarged structural diagram of the fixed connection mechanism in the diagram; In the figure, the reference numerals are: main frame 1, insertion hole 101, sealing groove 102, groove 1021, positioning mechanism 103, mounting hole 104, bushing 105, heat transfer part 2, limiting mechanism 201, fixing mechanism 202, and fins 3. Detailed Implementation

[0015] The specific implementation of this application is described in detail below through examples. However, the specific implementation of this application is not intended to limit the technical solution of this application. Any non-substantial changes, such as replacing common technical solutions in the field, using the technical solutions described in the embodiments of this application are within the protection scope of this application. Example 1

[0016] like Figures 1-3The thermally conductive plastic housing shown is a bowl-shaped main frame 1 integrally formed from thermally conductive plastic. A heat transfer part 2 is provided inside the bowl. Fins 3 are provided on the outer side of the main frame 1 corresponding to the position of the heat transfer part 2. The main frame 1 is also provided with a connector hole 101. The connector hole 101 is sealed and fixed to the connector or plug-in of the connector through a fixed connection mechanism.

[0017] In other embodiments, the socket 101 can also be integrally molded with the connector or plug-in of the connector by two-color injection molding and sealed and fixed.

[0018] Thermally conductive plastics are high thermally conductive plastics with a thermal conductivity of (3~50) W / mK. Suitable thermally conductive plastics are existing technology and can be purchased commercially.

[0019] The structure of the main frame 1, heat transfer part 2 and fins 3 is designed by using a one-piece molded thermally conductive plastic, which achieves the effects of being lightweight, easy to process, efficient in processing, and highly flexible in design.

[0020] In this embodiment, the fixing connection mechanism includes a sealing groove 102 and a positioning mechanism 103 for positioning and installing the connector or plug-in. Those skilled in the art can select the specific connector or plug-in according to their needs; the shape of the specific connector or plug-in can also be set according to actual requirements, which need not be elaborated upon and is not shown in the figures. In other embodiments, the fixing connection mechanism may also include fixing holes for fixing the connector, further reinforcing and sealing the main frame 1 and the connector by screw tightening.

[0021] In this embodiment, the bottom of the sealing groove 102 is provided with a groove 1021. During sealing, the sealing groove 102 contains sealant. On the one hand, during the pressing process, the groove 1021 can accommodate part of the sealant and / or part of the deformed sealing ring, resulting in a better sealing effect. On the other hand, after curing, the groove 1021 can limit the cured sealant, preventing misalignment of the sealant due to repeated insertion and removal of connectors, vibration, etc., which would reduce the sealing effect and further improve the sealing effect and extend the service life.

[0022] The system also includes a mounting assembly located on the outer side of the main frame 1 for mounting the housing. In this embodiment, the mounting assembly includes a mounting hole 104 and a bushing 105. The mounting hole 104 is located on the fin 3. In other embodiments, either the bushing 105 or the mounting hole 104 can be selected for fixing. Specifically, in this embodiment, the axis of the bushing 105 is perpendicular to the fin 3, and the fin 3 is connected to the bushing 105. This design, on the one hand, can further improve the heat dissipation effect by considering the bushing 105 as an extension of the fin 3, and on the other hand, can increase the mechanical strength of the bushing 105 through the fin 3, making the mounting assembly, especially the pivot of the bushing 105, more secure.

[0023] In this embodiment, the heat source is limited and fixed on the inner side of the main frame 1 by a limiting mechanism 201 and a fixing mechanism 202, respectively, so that the heat source is directly attached to the heat transfer part 2. The heat source is a circuit board including one or more of the following: a processor chip and an LED bead. The heat source can be a separate circuit board for the processor and the LED, or it can be integrated into a single circuit board. It should be noted that the direct attachment of the heat source to the heat transfer part 2 also includes conventional methods to enhance the interface thermal conductivity, such as applying thermally conductive adhesive and / or thermally conductive pads between the heat source and the heat transfer part 2, and does not specifically mean that there is no material or structure in between.

[0024] In other embodiments, the heat transfer part 2 can also be indirectly attached to a thermally conductive metal sheet. The thermally conductive metal sheet is integrally formed with the main frame 1 through an insert injection molding process. The heat source is dissipated through the thermally conductive metal sheet via the heat transfer part 2, the main frame 1, and the fins 3. By fully utilizing the ability of the thermally conductive metal sheet to quickly disperse heat to the metal sheet area, avoiding local overheating, and then dissipating heat through the heat transfer part 2, the main frame 1, and the fins 3, the heat source heat dissipation efficiency is improved, and the service life of the chip and / or LED as a heat source is extended. Example 2

[0025] An LED light includes the thermally conductive plastic housing described in Example 1. Other components are conventionally selected and set by those skilled in the art as needed, and need not be described in detail.

[0026] It should be noted that the components used in the above embodiments can be selected or replaced by those skilled in the art according to their needs, without exceeding the scope of protection of this application.

Claims

1. A thermally conductive plastic housing, characterized in that, The main frame is integrally molded from thermally conductive plastic into a bowl shape. A heat transfer part is provided inside the bowl. Fins are provided on the outer side of the main frame corresponding to the position of the heat transfer part. The main frame is also provided with a connector hole. The connector hole is integrally molded by two-color injection molding or sealed and fixed to the connector or plug-in through a fixed connection mechanism.

2. The thermally conductive plastic housing according to claim 1, characterized in that, The fixed connection mechanism includes a sealing groove and a positioning mechanism for the connector or plug-in of the positioning installation connector.

3. The thermally conductive plastic housing according to claim 2, characterized in that, The fixed connection mechanism also includes fixing holes for fixing connectors.

4. The thermally conductive plastic housing according to claim 2, characterized in that, The bottom of the sealing groove is provided with a recess.

5. The thermally conductive plastic housing according to claim 1, characterized in that, It also includes a mounting assembly located on the outside of the main frame for mounting the housing.

6. The thermally conductive plastic housing according to claim 5, characterized in that, The mounting components include mounting holes and / or bushings.

7. The thermally conductive plastic housing according to claim 6, characterized in that, The axis of the bushing is perpendicular to the fin, and the fin is connected to the bushing.

8. The thermally conductive plastic housing according to claim 6, characterized in that, The mounting holes are located on the fins.

9. The thermally conductive plastic housing according to claim 1, characterized in that, The heat source is limited and fixed on the inner side of the main frame by limiting and fixing mechanisms, respectively, so that the heat source is directly attached to or indirectly attached to the heat transfer part through a heat-conducting metal sheet. The heat source is a circuit board including one or more of processor chips and LED beads.

10. An LED lamp, characterized in that, Includes the thermally conductive plastic housing as described in any one of claims 1 to 9.

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