Heat dissipation structure of LED lamp

Abstract

The utility model provides a heat dissipation structure of an LED lamp. The heat dissipation structure comprises a base, a heat dissipation assembly and an outer cylinder. The base is fixed in the outer cylinder; the heat dissipation assembly comprises a heat dissipation ring and heat dissipation fins, the heat dissipation ring is fixed to the base and abuts against the base, an insertion groove is formed in the outer cylinder, the heat dissipation fins are fixed in the insertion groove, one side of each heat dissipation fin abuts against the heat dissipation ring, and the other side of each heat dissipation fin abuts against the heat dissipation ring. And the other sides of the heat dissipation fins extend to the outside of the outer cylinder. According to the heat dissipation structure of the LED lamp, the heat dissipation fins can receive heat on the shell for heat dissipation, the heat dissipation fins can make contact with the heat dissipation ring, heat is directly absorbed from the heat dissipation ring for heat dissipation, the heat dissipation performance is improved, the heat transfer efficiency is improved, and the heat dissipation performance is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lighting fixtures, and in particular to a heat dissipation structure of an LED lamp. Background Art

[0002] LED lamps have become the mainstream choice in the lighting market due to their advantages such as high brightness, low energy consumption and long life. However, LED chips generate a lot of heat during operation, and heat dissipation has become a key factor restricting their performance.

[0003] Current LED lamps dissipate heat only by fixing heat dissipation fins on the outer casing. The heat generated by the lamp needs to be gradually transferred to the outer casing and then dissipated into the air through metal heat conduction. This heat dissipation structure has low heat dissipation efficiency. Therefore, the present application provides a heat dissipation structure for an LED lamp to solve the above problem. Utility Model Content

[0004] Based on the above situation, the main purpose of the present invention is to provide a heat dissipation structure for an LED lamp to solve the problem that the current LED lamp only dissipates heat by fixing heat dissipation fins on the shell, resulting in low heat dissipation efficiency.

[0005] In order to achieve the above purpose, the technical solution adopted by the present utility model is as follows:

[0006] A heat dissipation structure of an LED lamp, comprising a base, a heat dissipation component and an outer cylinder;

[0007] The base is fixed in the outer cylinder;

[0008] The heat dissipation assembly includes a heat dissipation ring and heat dissipation fins. The heat dissipation ring is fixed to the base and abuts against the base. A slot is provided on the outer tube. The heat dissipation fins are fixed in the slot. One side of the heat dissipation fins abuts against the heat dissipation ring, and the other side of the heat dissipation fins extends to the outside of the outer tube.

[0009] Preferably, the heat dissipation fin includes a planar portion and a bent portion;

[0010] The outer cylinder includes an open end and a closed end, and the base is fixed to the open end;

[0011] The flat portion is inserted into the slot, the flat portion abuts against the heat dissipation ring, one end of the bent portion is connected to the flat portion, and the side of the other end of the bent portion abuts against the closed end.

[0012] Preferably, a matching groove is provided on the lower side of the base, and an annular groove is provided on the upper end of the outer cylinder. The base can be fixed in the annular groove, and the upper end of the outer cylinder abuts against the matching groove.

[0013] Preferably, the heat dissipation fins are fixed to the outer cylinder by welding.

[0014] Preferably, the heat dissipation ring is a copper ring.

[0015] Preferably, the base is provided with a plurality of circular holes, which are through holes, and the closed end is provided with a plurality of arc-shaped grooves, which are through grooves.

[0016] Preferably, there are a plurality of slots and heat dissipation fins, the extending direction of the slots is the same as the axial direction of the outer cylinder, and the plurality of slots are evenly arranged along the circumferential direction of the outer cylinder.

[0017] The beneficial effects of the present utility model are as follows: when the heat dissipation structure of the LED lamp provided by the present application is used, the LED light-emitting chip and the circuit board are placed in the fixed groove of the base, and the heat generated is transferred from the LED light-emitting chip through the base to the heat dissipation ring and the shell. On the one hand, the heat dissipation fins can accept the heat from the shell and dissipate heat, and can also contact the heat dissipation ring to directly absorb heat from the heat dissipation ring for dissipation, thereby improving the heat transfer efficiency and improving the heat dissipation performance.

[0018] Other beneficial effects of the present invention will be explained through the introduction of specific technical features and technical solutions in the specific implementation methods. Through the introduction of these technical features and technical solutions, those skilled in the art should be able to understand the beneficial technical effects brought about by the technical features and technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is a schematic structural diagram of a heat dissipation structure of an LED lamp of the present invention.

[0020] Figure 2 This is a cross-sectional view showing a heat dissipation ring of a heat dissipation structure of an LED lamp of the present invention.

[0021] Figure 3 This is an exploded view showing the matching groove of the heat dissipation structure of an LED lamp of the present invention.

[0022] Description of reference numerals:

[0023] 1. Base; 11. Matching groove; 12. Circular hole; 2. Heat dissipation assembly; 21. Heat dissipation ring; 22. Heat dissipation fin; 221. Flat portion; 222. Bent portion; 3. Outer tube; 31. Accommodating groove; 32. Slot; 33. Annular groove; 4. Open end; 5. Closed end; 51. Arc groove; 6. Threading hole. DETAILED DESCRIPTION

[0024] The present invention is described below based on embodiments, but the present invention is not limited to these embodiments. In the following detailed description of the present invention, some specific details are described in detail. In order to avoid obscuring the essence of the present invention, well-known methods, processes, procedures, and components are not described in detail.

[0025] Furthermore, persons of ordinary skill in the art will appreciate that the figures provided herein are for illustration purposes only and are not necessarily drawn to scale.

[0026] Unless the context clearly requires otherwise, throughout the specification and claims, the words "include," "comprising," and similar words should be construed in an inclusive sense rather than an exclusive or exhaustive sense; that is, in the sense of "including but not limited to."

[0027] In the description of the present invention, it should be understood that the terms "first," "second," etc. are used for descriptive purposes only and are not to be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0028] Reference Figure 1-3 The utility model provides a heat dissipation structure of an LED lamp, including a base 1, a heat dissipation component 2 and an outer tube 3. The outer tube 3 is the external protection structure of the lamp. The base 1 and the heat dissipation component 2 are installed on the outer tube 3. The LED light-emitting chip and the circuit board (not shown in the figure) can be fixed on the base 1. The heat generated by the LED light-emitting chip can be quickly dissipated through the base 1 and the heat dissipation component 2.

[0029] The outer tube 3 is a cylindrical structure, and a receiving groove 31 is provided inside the outer tube 3. The receiving groove 31 includes a closed end 5 and an open end 4. The base 1 can be set at the position of the open end 4. The middle of the base 1 and the outer tube 3 are both provided with a wire threading hole 6, which can supply power to the LED light-emitting chip from an external lead.

[0030] The heat dissipation assembly 2 includes a heat dissipation ring 21 and a plurality of heat dissipation fins 22. The heat dissipation ring 21 is fixed to the lower end of the base 1, and the upper end of the heat dissipation ring 21 abuts against the base 1. A plurality of slots 32 are provided on the side wall of the outer tube 3, and the plurality of slots 32 are evenly arranged along the circumferential direction of the outer tube 3. The extension direction of the plurality of slots 32 is the same as the axial direction of the outer tube 3. The heat dissipation fins 22 can be fixed in the slots 32, and one side of the heat dissipation fins 22 is placed outside the outer tube 3, and the other side of the heat dissipation fins 22 abuts against the heat dissipation ring 21. When the heat dissipation structure of the LED lamp provided in the present application is used, the LED light-emitting chip and the circuit board are placed in the fixed groove of the base 1, and the heat generated is transferred from the LED light-emitting chip from the base 1 to the heat dissipation ring 21 and the outer shell. On the one hand, the heat dissipation fins 22 can accept the heat on the outer shell for heat dissipation, and can also contact the heat dissipation ring 21 to directly absorb heat from the heat dissipation ring 21 for heat dissipation, thereby improving the heat transfer efficiency and the heat dissipation performance. In addition, in the prior art, due to the limitations of strength and appearance requirements, an aluminum alloy shell is usually used as the shell of the lamp, and the fins are directly fixed to the shell for heat dissipation. However, the heat dissipation performance of aluminum alloy is limited, resulting in limited heat dissipation efficiency from the base 1 to the shell. The heat dissipation ring 21 in this application is placed inside the outer tube 3, and there are no strength and appearance requirements. A ring-shaped heat sink with better conductivity can be used, and the size of the heat dissipation ring 21 is relatively thin and small, and the cost increase caused by using materials with better conductivity is also lower.

[0031] As an embodiment, the heat dissipation ring 21 is a copper ring. The copper ring has excellent thermal conductivity and can quickly transfer heat to the heat dissipation fins 22, thereby improving heat dissipation efficiency. It should be noted that the heat dissipation ring 21 does not necessarily have to be a copper ring. A silver ring with better thermal conductivity but higher cost can also achieve the same effect of improving heat dissipation efficiency. However, the copper ring has significantly improved heat dissipation performance compared to aluminum alloy, and the cost is not excessively increased, which is conducive to mass production.

[0032] As an embodiment, the heat dissipation fin 22 includes a planar portion 221 and a bent portion 222. The planar portion 221 is inserted and fixed in the slot 32. The planar portion 221 abuts against the heat dissipation ring 21. One end of the bent portion 222 is connected to the planar portion 221. The end of the bent portion 222 away from the planar portion 221 is bent toward the axial position of the outer tube 3 to the closed end 5 of the outer tube 3, and the side wall of the bent portion 222 away from the end of the planar portion 221 abuts against the closed end 5. Increasing the length of the heat dissipation fin 22 can improve the heat dissipation efficiency.

[0033] As an embodiment, the heat dissipation fins 22 are welded and fixed on the outer tube 3. The heat dissipation fins 22 and the outer tube 3 are relatively fixed, so that the heat dissipation ring 21 does not need to play an excessive supporting role for the heat dissipation fins 22, making the material selection of the heat dissipation ring 21 more flexible.

[0034] As an embodiment, a mating groove 11 is formed on the lower side of the base 1, and an annular groove 33 is formed on the upper end of the outer cylinder 3. The base 1 can be fixed in the annular groove 33, and the upper end of the outer cylinder 3 abuts against the mating groove 11, so that the base 1 can be stably placed in the outer cylinder 3. Specifically, the base 1 and the outer cylinder 3 can be bolted, and the base 1 and the heat dissipation ring 21 can be bolted and fixed. The bolt connection is an existing connection structure, and flange openings can be provided on the two structures for fixing. This application will not further describe or illustrate them.

[0035] As an embodiment, a plurality of circular holes 12 are provided on the base 1, and the circular holes 12 are through holes. A plurality of arcuate grooves 51 are provided on the closed end 5, and the arcuate grooves 51 are through grooves. The circular holes 12 and the arcuate grooves 51 can allow air to circulate in the outer tube 3, thereby improving the heat dissipation efficiency.

[0036] The implementation principle of the present utility model is: when the heat dissipation structure of the LED lamp provided in the present application is used, the LED light-emitting chip and the circuit board are placed in the fixed groove of the base 1, and the heat generated is transferred from the LED light-emitting chip through the base 1 to the heat dissipation ring 21 and the shell. On the one hand, the heat dissipation fins 22 can accept the heat on the shell for heat dissipation, and can also contact the heat dissipation ring 21 to directly absorb heat from the heat dissipation ring 21 for heat dissipation, thereby improving the heat transfer efficiency and improving the heat dissipation performance.

[0037] Those skilled in the art will appreciate that, provided there is no conflict, the above preferred solutions can be freely combined and superimposed.

[0038] It should be understood that the above-mentioned embodiments are merely illustrative and non-restrictive. Without departing from the basic principles of the present invention, various obvious or equivalent modifications or substitutions that can be made by those skilled in the art to the above-mentioned details will be included in the scope of the claims of the present invention.

Claims

1. A heat dissipation structure of an LED lamp, characterized in that: It includes a base, a heat dissipation component and an outer cylinder; The base is fixed in the outer cylinder; The heat dissipation assembly includes a heat dissipation ring and heat dissipation fins. The heat dissipation ring is fixed to the base and abuts against the base. A slot is provided on the outer tube. The heat dissipation fins are fixed in the slot. One side of the heat dissipation fins abuts against the heat dissipation ring, and the other side of the heat dissipation fins extends to the outside of the outer tube.

2. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: The heat dissipation fin includes a flat portion and a bent portion; The outer cylinder includes an open end and a closed end, and the base is fixed to the open end; The flat portion is inserted into the slot, the flat portion abuts against the heat dissipation ring, one end of the bent portion is connected to the flat portion, and the side of the other end of the bent portion abuts against the closed end.

3. The heat dissipation structure of an LED lamp according to claim 2, characterized in that: A matching groove is provided on the lower side of the base, and an annular groove is provided on the upper end of the outer tube. The base can be fixed in the annular groove, and the upper end of the outer tube abuts against the matching groove.

4. The heat dissipation structure of an LED lamp according to claim 1, wherein: The heat dissipation fins are welded and fixed on the outer cylinder.

5. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: The heat dissipation ring is a copper ring.

6. The heat dissipation structure of an LED lamp according to claim 2, characterized in that: The base is provided with a plurality of circular holes, which are through holes; the closed end is provided with a plurality of arc-shaped grooves, which are through grooves.

7. The heat dissipation structure of an LED lamp according to claim 1, characterized in that: There are a plurality of slots and heat dissipation fins, the extending direction of the slots is the same as the axial direction of the outer cylinder, and the plurality of slots are evenly arranged along the circumferential direction of the outer cylinder.

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