A heat dissipation structure of LED lamp

Abstract

A heat dissipation structure for an LED lamp relates to a heat dissipation structure. An outer cylinder and an inner cylinder are bonded and fixed by an upper sealing ring and a lower sealing plate, mercury is injected between the outer cylinder and the inner cylinder, a plurality of vertical notches 1 are provided at the upper end of the outer cylinder wall, the heat dissipation fins are surrounded and extruded into a rectangular cylinder by two opposite ends of a metal sheet, and the two opposite ends of each heat dissipation fin are bent outward to form a T-shaped plug-in portion, a plurality of heat dissipation fins are respectively inserted into the corresponding vertical notch 1 through the T-shaped plug-in portion, the vertical notch 1 is sealed by a sealant, the lamp holder is bonded and fixed inside the inner cylinder, a plurality of vertical notches 2 are provided in the middle of the inner cylinder wall, a plurality of high thermal conductivity rectangular metal sheets are respectively inserted into the corresponding vertical notch 2 in the middle, the vertical notch 2 is sealed by a sealant, the outer end of each high thermal conductivity rectangular metal sheet extends between the outer cylinder and the inner cylinder, and the inner end is tightly attached to the lamp holder. Mercury is used for heat conduction transition, and the heat dissipation is stable and efficient.

Description

Technical Field

[0001] The invention relates to a heat dissipation structure, in particular to a heat dissipation structure for an LED lamp. Background Art

[0002] In the field of lighting, LED lamps have basically replaced traditional tungsten filament lamps because of their advantages over traditional tungsten filament lamps, such as energy saving and environmental protection, and relatively long service life.

[0003] As we all know, LED lights generate a lot of heat when in use, especially high-power LED lights. If the heat generated cannot be discharged in time, it will affect the lighting effect of the LED light and even shorten its service life. Therefore, the heat dissipation structure of the LED light plays a particularly important role.

[0004] Currently, there are two common types of heat dissipation structures for LED lamps. One is a one-piece heat dissipation structure formed by direct die-casting. However, due to the production process, this heat dissipation structure has thicker fins and weaker heat dissipation capacity. The other is a heat dissipation structure assembled by splicing extruded thin-walled metal parts. This heat dissipation structure has thinner fins and stronger heat dissipation capacity. However, due to the easy deformation of thin-walled metal parts, poor contact during assembly can easily occur, resulting in heat conduction failure in some areas.

[0005] Therefore, there is an urgent need for an LED lamp heat dissipation structure that is simple and reasonable to manufacture and has stable and effective heat conduction. Summary of the Invention

[0006] In order to solve the deficiencies in the background technology, the present invention provides a heat dissipation structure for an LED lamp.

[0007] To achieve the above-mentioned purpose, the present invention adopts the following technical solutions: a heat dissipation structure of an LED lamp, comprising a main body mounting shell, a lamp holder, a plurality of heat dissipation fins and a plurality of highly thermally conductive rectangular metal sheets, the main body mounting shell comprising an outer cylinder and an inner cylinder coaxially spaced apart, the upper and lower ends of the outer cylinder and the inner cylinder being bonded and fixed by an upper sealing ring and a lower sealing plate respectively, mercury is filled between the outer cylinder and the inner cylinder, and the liquid level of the mercury is lower than the upper end surfaces of the outer cylinder and the inner cylinder, a plurality of vertical notches are uniformly provided on the upper end of the outer cylinder wall along the circumferential direction, each of the heat dissipation fins is enclosed by two opposite ends of the metal sheet and extruded into a rectangular cylindrical shape, and the two opposite ends of each heat dissipation fin are curled outward. It is bent into a T-shaped plug-in portion, and multiple heat dissipation fins are respectively inserted into the corresponding vertical notch 1 through the T-shaped plug-in portion, and each vertical notch 1 is sealed by sealant. Multiple heat dissipation fins are arranged along the radial direction of the outer cylinder and surround the outside of the outer cylinder. The lamp holder is bonded and fixed to the inside of the inner cylinder, and multiple vertical notches 2 are evenly provided in the middle of the inner cylinder wall along the circumferential direction. The middle of the multiple high thermal conductivity rectangular metal sheets are respectively inserted into the corresponding vertical notch 2 along the radial direction of the inner cylinder, and each vertical notch 2 is sealed by sealant. The outer end of each high thermal conductivity rectangular metal sheet extends between the outer cylinder and the inner cylinder, and the inner end of each high thermal conductivity rectangular metal sheet is tightly attached to the lamp holder.

[0008] Compared with the prior art, the beneficial effects of the present invention are as follows: the main body mounting shell, high thermal conductivity rectangular metal sheet and heat dissipation fins of the present invention are simple in appearance and easy to manufacture, and have a reasonable structure and are easy to install. Mercury is filled in the main body mounting shell, and mercury is liquid and has a strong heat conduction ability. The high thermal conductivity rectangular metal sheet is tightly attached to the lamp holder for heat conduction. At the same time, heat conduction transition is carried out between the high thermal conductivity rectangular metal sheet and the heat dissipation fins through mercury, which effectively avoids the most critical poor contact between the lamp holder and the heat dissipation fins in the heat dissipation process, resulting in heat conduction failure, and the heat dissipation is more stable and efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is an axonometric diagram of the overall structure of the LED lamp heat dissipation structure of the present invention;

[0010] Figure 2 This is an axonometric view of the split structure of the main mounting shell of the present invention;

[0011] Figure 3 This is an axonometric view of the assembly structure of the main body mounting shell and a plurality of heat sink fins of the present invention. For ease of viewing, the upper sealing ring of the main body mounting shell is not shown;

[0012] Figure 4 is an axonometric view of the heat sink fin of the present invention;

[0013] Figure 5This is an axonometric view of the assembly structure of the main body mounting shell, the lamp holder and a plurality of high thermal conductivity rectangular metal sheets of the present invention. For ease of viewing, the upper sealing ring of the main body mounting shell is not shown. DETAILED DESCRIPTION

[0014] The technical solutions of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0015] Specific implementation method 1: Figures 1 to 5 As shown, the present invention discloses a heat dissipation structure of an LED lamp, including a main body mounting shell, a lamp holder 5, a plurality of heat dissipation fins 6 and a plurality of high thermal conductivity rectangular metal sheets 7, the main body mounting shell includes an outer cylinder 1 and an inner cylinder 2 which are coaxially spaced and sleeved, the upper and lower ends of the outer cylinder 1 and the inner cylinder 2 are respectively bonded and fixed by an upper sealing ring 3 and a lower sealing plate 4, mercury is filled between the outer cylinder 1 and the inner cylinder 2, and the liquid level of the mercury is lower than the upper end surfaces of the outer cylinder 1 and the inner cylinder 2, the upper end of the wall of the outer cylinder 1 is evenly provided with a plurality of vertical notches 1-1 along the circumferential direction, each of the heat dissipation fins 6 is enclosed by two opposite ends of the metal sheet and extruded into a rectangular cylindrical shape, and the two opposite ends of each heat dissipation fin 6 are bent outward to form a T-shaped plug-in portion 6-1, The heat dissipation fins 6 are respectively inserted into the corresponding vertical notches 1-1 through the T-shaped plug-in portion 6-1, and each vertical notch 1-1 is sealed by sealant. Multiple heat dissipation fins 6 are arranged radially along the outer cylinder 1 and surround the outside of the outer cylinder 1. The lamp holder 5 is bonded and fixed to the inside of the inner cylinder 2. A plurality of vertical notches 2-1 are evenly arranged in the middle of the inner cylinder 2 along the circumferential direction. The middle of the multiple high thermal conductivity rectangular metal sheets 7 are respectively inserted into the corresponding vertical notches 2-1 along the radial direction of the inner cylinder 2, and each vertical notch 2-1 is sealed by sealant. The outer end of each high thermal conductivity rectangular metal sheet 7 extends between the outer cylinder 1 and the inner cylinder 2, and the inner end of each high thermal conductivity rectangular metal sheet 7 is tightly attached to the lamp holder 5.

[0016] Specific implementation method 2: Figure 1 、 2As shown, this embodiment is a further explanation of the specific embodiment one, and the outer circumferential surface of the upper sealing ring 3 is evenly fixed with multiple connecting rods 3-1 along the circumferential direction, and the multiple connecting rods 3-1 are all radially arranged along the upper sealing ring 3 and correspond one-to-one with multiple heat dissipation fins 6, and a positioning block 3-2 is fixed below each connecting rod 3-1, and each of the positioning blocks 3-2 is matched and inserted into the upper end of the corresponding heat dissipation fin 6, and the lower sealing plate 4 is a circular plate that matches the lower end of the outer cylinder 1, and the circumferential surface of the lower sealing plate 4 is evenly fixed with multiple connecting rods 4-1 along the circumferential direction, and the multiple connecting rods 4-1 are all radially arranged along the lower sealing plate 4 and correspond one-to-one with multiple heat dissipation fins 6, and a positioning block 4-2 is fixed above each connecting rod 4-1, and each of the positioning blocks 4-2 is matched and inserted into the lower end of the corresponding heat dissipation fin 6.

[0017] Specific implementation method three: Figure 4 As shown, this embodiment is a further description of the specific embodiment 1 or the specific embodiment 2, and each of the heat dissipation fins 6 is provided with a plurality of heat dissipation holes 6 - 2 .

[0018] Specific implementation method four: Figure 4 、 5 As shown, this embodiment is a further explanation of the specific embodiment three, and the multiple heat sink fins 6 and the multiple high thermal conductivity rectangular metal sheets 7 are all made of aluminum or aluminum-copper alloy materials, wherein the heat sink fins 6 have a thickness of 0.5 to 1 mm, and the high thermal conductivity rectangular metal sheets 7 have a thickness of 2 to 4 mm.

[0019] Specific implementation method five: Figure 5 As shown, this embodiment is a further explanation of the specific embodiment three, and the lamp holder 5 and the inner cylinder 2 are fixed by bonding with heat-conducting adhesive.

[0020] Specific implementation method six: Figure 5 As shown, this embodiment is a further explanation of the specific embodiment 1, and the liquid level of the mercury is 1 to 2 cm lower than the upper end surfaces of the outer cylinder 1 and the inner cylinder 2.

[0021] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be implemented in other configurations without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0022] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A heat dissipation structure for an LED lamp, characterized in that: The invention comprises a main body mounting shell, a lamp holder (5), a plurality of heat dissipation fins (6) and a plurality of high thermal conductivity rectangular metal sheets (7), wherein the main body mounting shell comprises an outer cylinder (1) and an inner cylinder (2) which are coaxially spaced and sleeved, the upper and lower ends of the outer cylinder (1) and the inner cylinder (2) being bonded and fixed by an upper sealing ring (3) and a lower sealing plate (4) respectively, and mercury is injected between the outer cylinder (1) and the inner cylinder (2), and the liquid level of the mercury is lower than that of the outer cylinder (1) and the inner cylinder (2). ) 1~2cm from the upper end surface, the upper end of the outer cylinder (1) is evenly provided with a plurality of vertical notches (1-1) along the circumferential direction, each of the heat dissipation fins (6) is surrounded by two opposite ends of a metal sheet and extruded into a rectangular cylinder, and the two opposite ends of each heat dissipation fin (6) are bent outward to form a T-shaped plug-in portion (6-1), and a plurality of heat dissipation fins (6) are respectively inserted into the corresponding vertical notches (1-1) through the T-shaped plug-in portion (6-1), and each vertical notch The opening (1-1) is sealed by a sealant, a plurality of heat dissipation fins (6) are arranged along the radial direction of the outer cylinder (1) and surround the outer side of the outer cylinder (1), the lamp holder (5) is bonded and fixed inside the inner cylinder (2), a plurality of vertical notches (2-1) are evenly arranged in the middle of the wall of the inner cylinder (2) along the circumferential direction, and the middle of the plurality of high thermal conductivity rectangular metal sheets (7) are respectively inserted into the corresponding vertical notches (2-1) along the radial direction of the inner cylinder (2), and each vertical notch (2-1) is provided at the inner cylinder (2). The second gap (2-1) is sealed by a sealant, the outer end of each high thermal conductivity rectangular metal sheet (7) extends between the outer cylinder (1) and the inner cylinder (2), the inner end of each high thermal conductivity rectangular metal sheet (7) is tightly attached to the lamp holder (5), and the plurality of heat dissipation fins (6) and the plurality of high thermal conductivity rectangular metal sheets (7) are all made of aluminum or aluminum-copper alloy material, wherein the thickness of the heat dissipation fins (6) is 0.5-1 mm, and the thickness of the high thermal conductivity rectangular metal sheet (7) is 2-4 mm.

2. The LED lamp heat dissipation structure according to claim 1, characterized in that: A plurality of connecting rods (3-1) are evenly fixed on the outer circumferential surface of the upper sealing ring (3) along the circumferential direction. The plurality of connecting rods (3-1) are all arranged radially along the upper sealing ring (3) and are arranged one-to-one with the plurality of heat dissipation fins (6). A positioning block (3-2) is fixed below each connecting rod (3-1). Each positioning block (3-2) is matched and inserted into the upper end of the corresponding heat dissipation fin (6). The lower sealing plate (4) is a circular plate matched with the lower end of the outer cylinder (1). A plurality of connecting rods (4-1) are evenly fixed on the circumferential surface of the lower sealing plate (4) along the circumferential direction. The plurality of connecting rods (4-1) are all arranged radially along the lower sealing plate (4) and are arranged one-to-one with the plurality of heat dissipation fins (6). A positioning block (4-2) is fixed above each connecting rod (4-1). Each positioning block (4-2) is matched and inserted into the lower end of the corresponding heat dissipation fin (6).

3. The LED lamp heat dissipation structure according to claim 1 or 2, characterized in that: Each of the heat dissipation fins (6) is provided with a plurality of heat dissipation holes (6-2).

4. The LED lamp heat dissipation structure according to claim 3, characterized in that: The lamp holder (5) and the inner cylinder (2) are bonded and fixed with heat-conducting adhesive.

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