Radiator of LED lamp and LED lamp
By designing a multi-layer LED lamp radiator structure and using hollow and convection design, the problem of insufficient heat dissipation performance of LED lamps is solved, efficient heat dissipation and luminous flux are achieved, and production costs are reduced.
Patent Information
- Application Number
- CN202011426836.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2020-12-09
- Publication Date
- 2024-12-06
- Estimated Expiration
- 2040-12-09
AI Technical Summary
When existing LED lamps increase the luminous flux, the heat dissipation pressure increases, resulting in an increase in the volume of the radiator, an increase in energy consumption, affecting life and production costs, and insufficient heat dissipation performance.
Design a radiator for LED lamps, including the first, second and third heat dissipation structures, and use hollow columnar support bodies, heat dissipation strips, heat dissipation fin sets and heat dissipation closed ring bodies to form a hollow structure to improve the heat dissipation area and efficiency. The internal housing cavity can be equipped with a power supply or fan to enhance convection.
It greatly improves the heat dissipation performance, achieves efficient heat dissipation in a small volume, improves the luminous flux and life of the lamp, and reduces production and transportation costs.
Smart Images
Figure CN112460563B_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of lighting fixture design, and in particular to a heat sink for an LED lamp and an LED lamp. Background Art
[0002] For LED lamps, if you want to increase the luminous flux of the lamp, it is inevitable to increase the power of the lamp, which will cause pressure on the heat dissipation of the lamp, and a larger volume is needed to meet the heat dissipation requirements. It not only consumes energy, but also seriously affects the life of the lamp, and also increases the production and transportation costs. The radiator is the main structural component of the LED lamp. The quality of the radiator structure design is directly related to the performance of the LED lamp. Summary of the invention
[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a heat sink for an LED lamp.
[0004] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows:
[0005] A heat sink for an LED lamp is provided on a side of a lampshade away from a lamp head. The heat sink has a first heat dissipation structure, a second heat dissipation structure and a third heat dissipation structure. The first heat dissipation structure includes a hollow columnar support body. The second heat dissipation structure is provided on the outer peripheral side of the support body. The third heat dissipation structure is provided on the outer peripheral side of the second heat dissipation structure. The first heat dissipation structure, the second heat dissipation structure and the third heat dissipation structure are integrally arranged.
[0006] Preferably, an accommodating cavity is formed inside the support body.
[0007] Preferably, the first heat dissipation structure further comprises a plurality of heat dissipation bars arranged on the inner periphery of the support body and extending along the length direction of the support body, and the plurality of heat dissipation bars are distributed on the inner peripheral surface of the support body at intervals along the circumferential direction.
[0008] Preferably, the inner surface of the heat dissipation strip is an arc surface, and the inner surfaces of the heat dissipation strips are located on the circumference of the same circle, and the space enclosed by the circle where the inner surfaces of the heat dissipation strips are located constitutes an accommodating cavity.
[0009] Preferably, the second heat dissipation structure comprises a plurality of heat dissipation fin groups, and the plurality of heat dissipation fin groups are distributed at intervals along the circumferential direction on the periphery of the support body.
[0010] Preferably, each heat sink group has two arc-shaped heat sinks extending along the length direction of the support body.
[0011] Preferably, the third heat dissipation structure comprises a plurality of heat dissipation closed-loop bodies, and the plurality of heat dissipation closed-loop bodies are sequentially spaced apart in the extension direction of the support body.
[0012] Preferably, the heat dissipation closed loop body is circular or polygonal.
[0013] Preferably, the cross section of the support body is hexagonal.
[0014] An LED lamp includes the heat sink described in the present invention, the length of the support body is equal to the total length of the second heat dissipation structure and the third heat dissipation structure, or the length of the support body is greater than the total length of the second heat dissipation structure and the third heat dissipation structure, and the support body has a first section located on the inner periphery of the second heat dissipation structure and the third heat dissipation structure and a second section extending outward from the end of the first section, and the light source board of the LED lamp is arranged on the outer periphery of the second section.
[0015] Due to the implementation of the above technical solution, the present invention has the following advantages compared with the prior art:
[0016] The heat sink of the LED lamp of the present invention includes a total of three heat dissipation structures formed from the inside to the outside, which greatly increases the heat dissipation area and gradually transfers the heat generated by the lamp from the inside to the outside. In addition, in the length direction of the heat sink, each heat dissipation structure is transparent and hollow. Therefore, the heat sink of the present invention can quickly conduct heat and cause air heat convection and heat radiation in the horizontal and vertical directions, greatly improving the heat dissipation performance.
[0017] The heat sink of the LED lamp of the present invention has a more reasonable, compact and exquisite structural design, and can provide higher heat dissipation performance with a smaller volume, which is a prerequisite for greatly improving the luminous flux of the lamp, and has very high heat dissipation efficiency and light weight. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the top view of the structure of the heat sink of the present invention (the heat dissipation closed loop body is a regular octagon);
[0019] Figure 2 It is a schematic diagram of the three-dimensional structure of the heat sink of the present invention (the heat dissipation closed loop body is a regular octagon);
[0020] Figure 3 It is a schematic diagram of the three-dimensional structure of the heat sink of the present invention (the heat dissipation closed loop body is circular and the support body has a first section and a second section);
[0021] Wherein: 10, support body; 11, heat dissipation strip; 100, accommodating cavity; 20, arc-shaped heat dissipation fin; 21, straight heat dissipation fin; 30, heat dissipation closed loop body. DETAILED DESCRIPTION
[0022] The present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.
[0023] Combination Figures 1 to 3As shown, a heat sink for an LED lamp has a first heat sink structure, a second heat sink structure and a third heat sink structure. The first heat sink structure includes a hollow columnar support body 10 (the cross section of the support body 10 is hexagonal), the second heat sink structure is arranged on the outer peripheral side of the support body 10, and the third heat sink structure is arranged on the outer peripheral side of the second heat sink structure. The first heat sink structure, the second heat sink structure and the third heat sink structure are arranged in one piece. In addition, a receiving cavity 100 is formed inside the support body 10.
[0024] Specifically, the first heat dissipation structure further includes a plurality of heat dissipation bars 11 disposed on the inner circumference of the support body 10 and extending along the length direction of the support body 10, and the nine heat dissipation bars 11 are spaced apart and distributed along the circumferential direction on the inner circumferential surface of the support body 10. The inner surface of the heat dissipation bar 11 is an arc surface, and the inner surface of each heat dissipation bar 11 is located on the circumference of the same circle, and the space enclosed by the circle where the inner surface of each heat dissipation bar 11 is located constitutes the accommodating cavity 100, that is, the accommodating cavity 100 is cylindrical.
[0025] The power supply or fan (forced convection cooling) of the lamp can be installed in the accommodating cavity 100, or both can be installed in the accommodating cavity 100. Installing the power supply can effectively dissipate the heat of the power supply, and installing the fan can further enhance convection and improve the cooling capacity.
[0026] In this example, the arc surfaces of the nine heat dissipation strips 11 allow a gap to be formed between the components placed in the accommodating cavity 100 and the inner periphery of the support body 10 on the basis of ensuring the heat dissipation area, thereby meeting the convection requirements and improving the heat dissipation performance.
[0027] Furthermore, the second heat dissipation structure includes 6 heat sink groups, which are spaced apart along the circumferential direction on the outer periphery of the support body 10. Each heat sink group has two arc-shaped heat sinks 20 extending along the length direction of the support body 10, the arc-shaped openings of the arc-shaped heat sink 20 face outward, and the arc surface of the inner arc-shaped heat sink 20 is larger than the arc surface of the outer arc-shaped heat sink 20, so as to facilitate the heat to radiate outward.
[0028] In addition, each heat sink group also has a straight heat sink. The straight heat sink 21 plays a dual role of connecting support and increasing the heat dissipation surface. The two side edges of the straight heat sink 21 are respectively connected to the support body 10 and the third heat dissipation structure, and the arc heat sink 20 is connected to the straight heat sink 21.
[0029] Furthermore, the third heat dissipation structure includes a plurality of heat dissipation closed loop bodies 30, which are sequentially spaced apart in the extension direction of the support body 10. The plurality of heat dissipation closed loop bodies 30 are combined to form a hollow shape, which effectively dissipates heat by radiation and convection.
[0030] In this example, the heat dissipation closed loop body 30 is circular (eg Figure 3 ) or polygons (such as Figure 1and Figure 2 As shown), such as a regular hexagon, a regular octagon, etc., when the heat dissipation closed loop body 30 is a regular polygon, each side can be chamfered to form a diamond shape, which makes the appearance more beautiful.
[0031] The heat sink of the LED lamp of the present invention includes a total of three heat dissipation structures formed from the inside to the outside, which greatly increases the heat dissipation area and gradually transfers the heat generated by the lamp from the inside to the outside. In addition, in the length direction of the heat sink, each heat dissipation structure is transparent and hollow. Therefore, the heat sink of the present invention can quickly conduct heat and cause air heat convection and heat radiation in the horizontal and vertical directions, greatly improving the heat dissipation performance.
[0032] The heat sink of the LED lamp of the present invention has a more reasonable, compact and exquisite structural design, and can provide higher heat dissipation performance with a smaller volume, which is a prerequisite for greatly improving the luminous flux of the lamp, and has very high heat dissipation efficiency and light weight.
[0033] In addition, the present invention also relates to an LED lamp, the lamp includes the heat sink described in the present invention, the heat sink is arranged on the side of the lampshade away from the lamp head, and the length of the support body 10 has two options, one is (such as Figure 1 As shown in the figure): the length of the support body 10 is equal to the total length of the second heat dissipation structure and the third heat dissipation structure. In this case, one end surface of the heat sink in the length direction is connected to one end surface of the lampshade. Figure 3 As shown): the length of the support body 10 is greater than the total length of the second heat dissipation structure and the third heat dissipation structure. In this case, the support body 10 has a first section located at the inner periphery of the second heat dissipation structure and the third heat dissipation structure and a second section extending outward from the end of the first section. The light source board of the LED lamp is arranged on the outer peripheral surface of the second section, and the periphery of the support body 10 has multiple surfaces. The light source board can be distributed on multiple surfaces to load more lamp beads, and the lamp can emit light in all directions with higher brightness.
[0034] The above detailed description of the present invention is intended to enable persons familiar with the art to understand the contents of the present invention and implement them. It does not limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.
Claims
1. An LED lamp, comprising a heat sink disposed on a side of a lampshade away from a lamp holder, the heat sink having a first heat dissipation structure, a second heat dissipation structure and a third heat dissipation structure, characterized in that: The first heat dissipation structure comprises a hollow cylindrical support body, a plurality of heat dissipation strips extending along the length direction of the support body, a receiving cavity is formed inside the support body, and the plurality of heat dissipation strips are arranged on the inner circumference of the support body and are spaced apart and distributed on the inner circumferential surface of the support body along the circumferential direction; The second heat dissipation structure is arranged on the outer peripheral side of the support body, and the second heat dissipation structure includes a plurality of heat dissipation fin groups, and the plurality of heat dissipation fin groups are distributed at intervals along the circumferential direction on the outer periphery of the support body; The third heat dissipation structure is arranged on the outer peripheral side of the second heat dissipation structure, and the third heat dissipation structure includes a plurality of heat dissipation closed-loop bodies, and the plurality of heat dissipation closed-loop bodies are sequentially spaced in the extension direction of the support body; The first heat dissipation structure, the second heat dissipation structure and the third heat dissipation structure are integrally arranged, the support body has a first section located at the inner periphery of the second heat dissipation structure and the third heat dissipation structure and a second section extending outward from the end of the first section, and the light source panel of the LED lamp is arranged on the outer peripheral surface of the second section.
2. The LED lamp according to claim 1, characterized in that: The inner surface of the heat dissipation strip is an arc surface, and the inner surface of each heat dissipation strip is located on the circumference of the same circle, and the space enclosed by the circle where the inner surface of each heat dissipation strip is located constitutes the accommodating cavity.
3. The LED lamp according to claim 1, characterized in that: Each heat sink group has two arc-shaped heat sinks extending along the length direction of the support body.
4. The LED lamp according to claim 3, characterized in that: Each heat sink group also has a straight heat sink, which plays a dual role of connecting support and increasing the heat dissipation surface. The two side edges of the straight heat sink are respectively connected to the support body and the third heat dissipation structure, and the arc heat sink is connected to the straight heat sink.
5. The LED lamp according to claim 1, characterized in that: The heat sink group is arranged corresponding to the edge of the support body.
6. The LED lamp according to claim 1, characterized in that: The heat dissipation closed loop body is circular or polygonal.
7. The LED lamp according to claim 1, characterized in that: The cross section of the support body is hexagonal.