CN212390126U - LED lamp and radiating assembly thereof - Google Patents

Abstract

The application belongs to the technical field of lighting device heat dissipation accessories, and particularly relates to an LED lamp and a heat dissipation assembly thereof. In the LED lamp heat dissipation assembly, the middle part of the first surface of the supporting disc forms an assembly surface for installing an LED light source, the supporting disc is provided with heat dissipation fins distributed at intervals around the normal of the assembly surface, and the two ends of each heat dissipation fin face towards the middle part and the outer edge of the supporting disc respectively, so that a plurality of heat dissipation fins can be arranged in the limited space of the supporting disc. The cold end of the heat pipe is connected with the radiating fin, the hot end of the heat pipe is connected with the middle part of the second surface of the supporting disc, and the top cover is arranged on the upper cover of the fin component. The LED light source is arranged on the assembling surface, so that the LED light source is indirectly contacted with the hot end of the heat pipe, and good heat transfer is kept. The heat that the luminous production of LED light source is transmitted to the hot junction of heat pipe by the supporting disk, transmits to the fin by the cold junction of heat pipe again, and the air current passes through the first ventilation hole of supporting disk, fin and the second ventilation hole of top cap, with heat spread to the external environment fast, realizes the high-efficient heat dissipation of great power LED lamp, this LED radiating component compact structure, small.

Description

LED lamp and radiating assembly thereof

Technical Field

The application belongs to the technical field of lighting device heat dissipation accessories, and particularly relates to an LED lamp and a heat dissipation assembly thereof.

Background

The LED lamp has the advantages of high efficiency, energy conservation, health, no radiation, environmental protection and wide application. However, the power is often not large due to the heat dissipation problem of the current LED light source. The larger the power of the LED light source is, the larger the heat productivity is, and the LED lamp in the prior art is difficult to effectively radiate the LED light source with higher power, so that the service life of the product is shortened, and the reliability is poorer.

SUMMERY OF THE UTILITY MODEL

An object of the embodiment of the application is to provide an LED lamp heat dissipation assembly and an LED lamp, so as to solve the technical problem that the existing LED lamp is difficult to dissipate heat of a light source with large power.

The embodiment of the application provides an LED lamp heat dissipation assembly, which comprises a supporting plate, a top cover, a fin assembly and a heat pipe; the supporting disc is provided with a first surface and a second surface which are opposite, and the middle part of the first surface is provided with an assembling surface for installing an LED light source; the supporting disc is provided with a first vent hole; the fin assembly comprises fins spaced around the normal of the mounting face on the second face; one end of the radiating fin faces to the middle part of the supporting disc, and the other end of the radiating fin faces to the outer edge of the supporting disc; the heat pipe is arranged corresponding to the fin assembly, the cold end of the heat pipe is sequentially connected with the radiating fins in the fin assembly, and the hot end of the heat pipe is attached to the middle of the second surface; the top cover is arranged on the fin component in a covering mode, and the top cover is provided with a second ventilation hole.

Optionally, the heat sink has a first side and a second side opposite to each other, the first side is connected to the second surface, and the second side is connected to the cold end of the heat pipe.

Optionally, the first side is bent and extended to form a support arm, and the support arm abuts against the second surface.

Optionally, the second side edge is provided with a mounting hole, the edge of the mounting hole extends to form a flanging part, the heat pipe is inserted into the mounting hole, and the outer wall of the heat pipe abuts against the flanging part.

Optionally, a first boss is arranged in the middle of the first surface, and the hot end of the heat pipe abuts against the first boss;

a second boss is convexly arranged in the middle of the inner side surface of the top cover, and the second boss is provided with a containing groove for containing the heat pipe;

the second boss is abutted to the first boss, and the hot end of the heat pipe is attached to the inner wall of the accommodating groove.

Optionally, the heat pipe comprises an arc-shaped section and a straight line section, and one end of the straight line section is connected with one end of the arc-shaped section;

the arc-shaped section is connected to the heat sink in the same fin assembly, and at least a portion of the straight section is connected to a middle portion of the second face.

Optionally, the number of the fin assemblies is the same as that of the heat pipes, and the fin assemblies are annularly arranged on the support disc.

Optionally, the number of the first vent holes is multiple, the first vent holes are annularly distributed on the support disc, the first vent holes extend in a strip shape, one end of each first vent hole faces the middle of the support disc, and the other end of each first vent hole faces the outer edge of the support disc;

the first vent hole is provided with two strip-shaped side walls which are oppositely arranged, and the extending direction of the strip-shaped side walls is parallel to the extending direction of the first vent hole;

every the fin corresponds one first ventilation hole setting, at least a part of fin is located with this fin corresponding two in the first ventilation hole between the bar lateral wall.

Optionally, the number of the second ventilation holes is multiple, the second ventilation holes are annularly distributed on the top cover, and an area between two adjacent cooling fins is correspondingly communicated with at least one second ventilation hole.

The embodiment of the application provides an LED lamp, including foretell LED lamp radiator unit and LED light source, the LED light source is located the fitting surface.

One or more technical solutions provided in the embodiments of the present application have at least one of the following technical effects: in the LED lamp heat dissipation assembly, the middle part of the first surface of the supporting disc forms an assembly surface for installing an LED light source, the supporting disc is provided with heat dissipation fins distributed at intervals around the normal of the assembly surface, and the two ends of each heat dissipation fin respectively face to the middle part and the outer edge of the supporting disc, namely the heat dissipation fins extend along the radial direction of the supporting disc approximately, so that a plurality of heat dissipation fins can be arranged in the limited space of the supporting disc. The cold end of the heat pipe is connected with the radiating fin, the hot end of the heat pipe is connected with the middle part of the second surface of the supporting disc, and the top cover is arranged on the upper cover of the fin component. The LED light source is arranged on the assembling surface, the middle part of the first surface of the supporting plate corresponds to the middle part of the second surface, so that the LED light source is indirectly contacted with the hot end of the heat pipe, and good heat transfer is kept. The heat that the luminous production of LED light source is transmitted to the hot junction of heat pipe by the supporting disk, transmits to the fin by the cold junction of heat pipe again, and the air current passes through the first ventilation hole of supporting disk, fin and the second ventilation hole of top cap, with heat spread to the external environment fast, realizes the high-efficient heat dissipation of great power LED lamp, and life is longer, and this LED radiating component compact structure is small moreover.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.

Fig. 1 is a perspective assembly view of an LED lamp heat sink assembly provided in an embodiment of the present application;

FIG. 2 is an exploded perspective view of the LED lamp heat sink assembly of FIG. 1;

FIG. 3 is another perspective exploded view of the LED lamp heat sink assembly of FIG. 1;

FIG. 4 is a schematic view of an assembly of a support plate, a heat sink and a heat pipe in the LED lamp heat dissipation assembly of FIG. 1;

FIG. 5 is a perspective view of a heat sink in the LED lamp heat sink assembly of FIG. 2;

FIG. 6 is an enlarged view of FIG. 2 at A;

FIG. 7 is a perspective assembly view of an LED lamp provided in an embodiment of the present application;

fig. 8 is a cross-sectional view taken along line B-B of fig. 7.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

In the description of the embodiments of the present application, it is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like refer to orientations and positional relationships illustrated in the drawings, which are used for convenience in describing the embodiments of the present application and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the embodiments of the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

In the embodiments of the present application, unless otherwise specifically stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

Referring to fig. 1 to 3, an embodiment of the present invention provides an LED lamp heat dissipation assembly, which includes a supporting plate 10, a top cover 20, a fin assembly 30 and a heat pipe 40. The support plate 10 has a first surface 10a and a second surface 10b opposite to each other, and the middle of the first surface 10a has a mounting surface 11 for mounting the LED light source. The support plate 10 is provided with a first ventilation hole 12. With reference to fig. 4, the fin assembly 30 includes fins 31 spaced on the second face 10b about a normal to the mounting face 11. The heat sink 31 has one end facing the middle of the support plate 10 and the other end facing the outer edge of the support plate 10. The heat pipe 40 is disposed corresponding to the fin assembly 30, the cold end 40a of the heat pipe 40 is sequentially connected to the heat sink 31 in the fin assembly 30, and the hot end 40b of the heat pipe 40 is attached to the middle of the second surface 10 b. The top cover 20 covers the fin assembly 30, and the top cover 20 is provided with a second ventilation hole 21.

Compared with the prior art, the LED lamp heat dissipation assembly provided by the application has the advantages that the middle of the first surface 10a of the supporting plate 10 forms the assembling surface 11 for installing the LED light source, the heat dissipation fins 31 distributed around the normal line of the assembling surface 11 at intervals are arranged on the supporting plate 10, two ends of each heat dissipation fin 31 respectively face the middle and the outer edge of the supporting plate 10, namely the heat dissipation fins 31 approximately extend along the radial direction of the supporting plate 10, and therefore a plurality of heat dissipation fins 31 can be arranged in the limited space of the supporting plate 10. The cold end 40a of the heat pipe 40 is connected with the heat sink 31, the hot end 40b of the heat pipe 40 is connected with the middle part of the second surface 10b of the support plate 10, and the top cover 20 is covered on the fin assembly 30. The LED light source is arranged on the assembling surface 11, the middle part of the first surface 10a of the supporting plate 10 corresponds to the middle part of the second surface 10b, so that the LED light source is indirectly contacted with the hot end 40b of the heat pipe 40, and good heat transfer is kept. The heat that the luminous production of LED light source is transmitted to hot junction 40b of heat pipe 40 by supporting disk 10, and on cold junction 40a by heat pipe 40 transmitted to fin 31 again, the air current passed through first ventilation hole 12 of supporting disk 10, fin 31 and the second ventilation hole 21 of top cap 20, with heat diffusion to external environment fast, realize the high-efficient heat dissipation of great power LED lamp, life is longer, and this LED radiating component compact structure is small moreover.

The fins 31 are spaced around the normal of the mounting surface 11, and the normal of the mounting surface 11 can be understood as one of the vertical lines of the mounting surface 11. The distribution path of the heat dissipation fins 31 may be a part of a circle, a part of an ellipse, a part of a square, a part of a rounded rectangle, or a part of other annular structures, and the specific shape is not limited. In particular, the heat sink 31 may be disposed around the LED light source, which may reduce the height dimension of the heat sink assembly, as well as the height dimension of the LED lamp.

The support plate 10 and the top cover 20 can be made of aluminum or copper or other materials with good heat conductivity. The supporting plate 10 and the top cover 20 can be connected by a fastener or a buckle or other mechanical connection method, and the fin assembly 30 is clamped between the supporting plate 10 and the top cover 20 to form a flat structure, so that the overall structure is small in size in the height direction.

Heat pipe 40 may be made of aluminum or copper or other material that conducts heat well. The heat pipe 40 is extended according to the distribution of the heat dissipation fins 31 so that the cold end 40a of the heat pipe 40 may be connected to a plurality of heat dissipation fins 31.

Referring to fig. 4 to 6, in another embodiment of the present application, the heat sink 31 has a first side 31a and a second side 31b opposite to each other, the first side 31a is connected to the second surface 10b, and the second side 31b is connected to the cold end 40a of the heat pipe 40. The heat sink 31 is formed in a substantially rectangular shape, which facilitates the manufacturing, and when the heat sink 31 is disposed around the middle of the support plate 10, it is convenient to dispose more heat sinks 31 in a limited space, and it is also convenient to connect the heat pipe 40 to the heat sink 31.

Referring to fig. 3 to fig. 5, in another embodiment of the present application, the first side 31a is bent and extended to form a supporting arm 311, and the supporting arm 311 abuts against the second surface 10 b. When a plurality of heat sinks 31 are connected with the heat pipe 40, the support arm 311 is arranged to arrange the heat sink 31 on the support plate 10 at a predetermined angle, for example, 90 ° is formed between the support arm 311 and the heat sink body, the support arm 311 abuts against the support plate 10 during assembly, so that the heat sink body is vertically arranged on the support plate 10, which can reduce the resistance of the air flow flowing through the heat sink 31 and improve the heat dissipation effect.

Referring to fig. 5 and 6, in another embodiment of the present application, the second side 31b is provided with a mounting hole 312, a flange portion 313 is formed on an edge of the mounting hole 312 in an extending manner, the heat pipe 40 is inserted into the mounting hole 312, and an outer wall of the heat pipe 40 abuts against the flange portion 313. The heat sink 31 is provided with a mounting hole 312, which facilitates the insertion of the cold end 40a of the heat pipe 40 on the heat sink 31, and the connection between the heat pipe 40 and the heat sink 31 is realized. The flange part 313 is arranged at the edge of the mounting hole 312, the structure is easy to form, when the heat pipe 40 is inserted into the mounting hole 312 and contacts with the flange part 313, the contact area between the heat pipe 40 and the radiating fin 31 can be increased, the heat transfer efficiency is improved, and the radiating effect is further improved.

Illustratively, the mounting hole 312 has a rectangular shape, the mounting hole 312 has three edges, and each of the three edges of the mounting hole 312 is bent and extended to form a flange portion 313. The cross section of the heat pipe 40 is substantially waist-shaped, and the rectangular mounting hole 312 is matched with the heat pipe 40, so that a larger contact area is formed between the heat pipe 40 and the flanging part 313, and the heat dissipation efficiency is improved.

Referring to fig. 2 and 4, in another embodiment of the present application, a first boss 13 is disposed in the middle of the first surface 10a, and the hot end 40b of the heat pipe 40 abuts against the first boss 13. Referring to fig. 6, the cold end 40a of the heat pipe 40 is connected to the mounting hole 312 on the second side 31b of the heat sink 31, so that the heat pipe 40 is disposed on a substantially flat surface, the heat pipe 40 is assembled, and the heat pipe 40 is reliably contacted with the support plate 10.

Referring to fig. 3 and 8, in another embodiment of the present application, a second boss 22 is protruded from a middle portion of an inner side surface of the top cover 20, and the second boss 22 is provided with a receiving groove 221 for receiving the heat pipe 40. The second boss 22 abuts against the first boss 13, and the hot end 40b of the heat pipe 40 is attached to the inner wall of the accommodating groove 221. Therefore, the contact area between the hot end 40b of the heat pipe 40 and the top cover 20 can be increased, heat generated by light emission of the LED light source 200 can be rapidly transmitted to the hot end 40b of the top cover 20 and the heat pipe 40 through the supporting plate 10, and then the heat is diffused to the radiating fin 31 connected with the cold end 40a of the heat pipe 40, so that the radiating efficiency is improved. For example, the accommodating groove 221 is in a strip shape, and the hot end 40b of the heat pipe 40 has a shape matched with the accommodating groove 221, so that the hot end 40b of the heat pipe 40 can be accommodated in the accommodating groove 221 and abut against the inner wall of the accommodating groove 221.

Referring to fig. 2 and 4, in another embodiment of the present application, a heat pipe 40 includes an arc-shaped section 41 and a straight section 42, wherein one end of the straight section 42 is connected to one end of the arc-shaped section 41; the arc-shaped section 41 is connected to the heat sink 31 in the same fin assembly 30, and at least a portion of the straight section 42 is connected to a middle portion of the second face 10 b. The heat sink 31 in the fin assembly 30 is disposed around the middle of the support plate 10, and connects the arc-shaped section 41 of the heat pipe 40 with the heat sink 31, and the straight section 42 of the heat pipe 40 is connected to the second surface 10b of the support plate 10, so as to realize the heat conduction connection between the support plate 10, the heat pipe 40 and the heat sink 31. Specifically, the heat pipe is bent by a jig to form the arc-shaped section 41 and the straight section 42, so that the heat pipe is easy to mold.

Referring to fig. 2 and 4, in another embodiment of the present invention, the number of fin assemblies 30 is the same as that of the heat pipes 40, and the fin assemblies 30 are annularly arranged on the support plate 10. The plurality of sets of fin assemblies 30 and heat pipes 40 are arranged, so that heat generated by the LED light source 200 can be rapidly transferred to different fin assemblies 30 through different heat pipes 40, and thus, the heat dissipation efficiency can be improved. Wherein, the ring shape can be circular, oval, square, rectangle with round corners or other shapes, and the specific shape can be determined according to the shape of the support disc 10.

Referring to fig. 2 and 4, in another embodiment of the present invention, the number of the first ventilation holes 12 is multiple, the first ventilation holes 12 are annularly distributed on the support plate 10, the first ventilation holes 12 extend in a strip shape, one end of the first ventilation holes 12 faces the middle of the support plate 10, and the other end of the first ventilation holes 12 faces the outer edge of the support plate 10, that is, the extending direction of the first ventilation holes 12 and the extending direction of the heat sink 31 extend substantially in a radial direction. As shown in fig. 4, the first vent hole 12 has two oppositely disposed strip-shaped side walls 121, and the extension direction of the strip-shaped side walls 121 is parallel to the extension direction of the first vent hole 12. Each of the heat radiation fins 31 is provided corresponding to one of the first ventilation holes 12, and at least a part of the heat radiation fin 31 is located between the two strip-shaped side walls 121 in the first ventilation hole 12 corresponding to the heat radiation fin 31. This facilitates the division of the air flow into two streams after entering through the first ventilating hole 12, which pass through the opposite sides of the heat radiating fin 31, respectively, thus more rapidly spreading the heat out.

Referring to fig. 2 and 3, in another embodiment of the present application, the number of the second ventilation holes 21 is multiple, and the second ventilation holes 21 are annularly distributed on the top cover 20, that is, the extending direction of the second ventilation holes 21 and the extending direction of the heat sink 31 are substantially radially extended. The area between two adjacent fins 31 is in communication with at least one second vent hole 21. The airflow which is convenient to enter the first ventilation hole 12 of the supporting disk 10 is discharged from the second ventilation hole 21 of the top cover 20 after passing through the radiating fin 31, so that the heat is diffused to the external environment, and the radiating effect is good.

Referring to fig. 7 and 8, in another embodiment of the present application, an LED lamp is provided, which includes the above-mentioned LED lamp heat dissipation assembly and an LED light source 200, wherein the LED light source 200 is disposed on the mounting surface 11. The middle part of the first surface 10a of the support plate 10 forms a mounting surface 11 for mounting the LED light source 200, the support plate 10 is provided with heat dissipation fins 31 distributed at intervals around the normal of the mounting surface, and both ends of the heat dissipation fins 31 respectively face the middle part and the outer edge of the support plate 10, i.e. the heat dissipation fins 31 extend substantially along the radial direction of the support plate 10, so that a plurality of heat dissipation fins 31 can be arranged in the limited space of the support plate 10. The cold end 40a of the heat pipe 40 is connected with the heat sink 31, the hot end 40b of the heat pipe 40 is connected with the middle part of the second surface 10b of the support plate 10, and the top cover 20 is covered on the fin assembly 30. The LED light source 200 is mounted on the mounting surface 11, and the middle of the first surface 10a of the support plate 10 corresponds to the middle of the second surface 10b, so that the LED light source 200 is indirectly contacted with the hot end 40b of the heat pipe 40, and good heat transfer is maintained. The heat generated by the light emission of the LED light source 200 is transferred to the hot end 40b of the heat pipe 40 through the support plate 10, and then transferred to the heat dissipation plate 31 through the cold end 40a of the heat pipe 40, and the air flow passes through the first ventilation hole 12 of the support plate 10, the heat dissipation plate 31 and the second ventilation hole 21 of the top cover 20, so that the heat is quickly diffused to the external environment, the high-efficiency heat dissipation of the high-power LED lamp is realized, the service life is long, and the LED heat dissipation assembly is compact in structure and small in size. The LED light source 200 includes a substrate 201 and an LED lamp bead 202 disposed on the substrate 201. The substrate 201 is attached to the mounting surface 11 of the support plate 10.

The present invention is not intended to be limited to the particular embodiments shown and described, but is to be accorded the widest scope consistent with the principles and novel features herein disclosed.

Claims (10)

1. An LED lamp heat dissipation assembly is characterized by comprising a supporting plate, a top cover, a fin assembly and a heat pipe; the supporting disc is provided with a first surface and a second surface which are opposite, and the middle part of the first surface is provided with an assembling surface for installing an LED light source; the supporting disc is provided with a first vent hole; the fin assembly comprises fins spaced around the normal of the mounting face on the second face; one end of the radiating fin faces to the middle part of the supporting disc, and the other end of the radiating fin faces to the outer edge of the supporting disc; the heat pipe is arranged corresponding to the fin assembly, the cold end of the heat pipe is sequentially connected with the radiating fins in the fin assembly, and the hot end of the heat pipe is attached to the middle of the second surface; the top cover is arranged on the fin component in a covering mode, and the top cover is provided with a second ventilation hole.

2. The LED lamp heat sink assembly of claim 1 wherein the heat sink has first and second opposing sides, the first side being connected to the second face and the second side being connected to the cold end of the heat pipe.

3. The LED lamp heat sink assembly as claimed in claim 2, wherein the first side is bent and extended to form a support arm, and the support arm abuts against the second surface.

4. The LED lamp heat sink assembly as claimed in claim 2, wherein the second side edge has a mounting hole, a flange portion is formed on an edge of the mounting hole, the heat pipe is inserted into the mounting hole, and an outer wall of the heat pipe abuts against the flange portion.

5. The LED lamp heat sink assembly of claim 1, wherein a first boss is disposed in the middle of the first surface, and the hot end of the heat pipe abuts against the first boss;

a second boss is convexly arranged in the middle of the inner side surface of the top cover, and the second boss is provided with a containing groove for containing the heat pipe;

the second boss is abutted to the first boss, and the hot end of the heat pipe is attached to the inner wall of the accommodating groove.

6. The LED lamp heat sink assembly of any one of claims 1 to 5, wherein the heat pipe comprises an arc-shaped section and a straight section, one end of the straight section being connected to one end of the arc-shaped section;

the arc-shaped section is connected to the heat sink in the same fin assembly, and at least a portion of the straight section is connected to a middle portion of the second face.

7. The LED lamp heat sink assembly of claim 6, wherein the number of fin assemblies and the number of heat pipes are the same, the fin assemblies being annularly arranged on the support plate.

8. The LED lamp heat dissipation assembly of any one of claims 1 to 5, wherein the number of the first ventilation holes is multiple, the first ventilation holes are distributed on the support plate in an annular shape, the first ventilation holes extend in a strip shape, one end of each first ventilation hole faces to the middle of the support plate, and the other end of each first ventilation hole faces to the outer edge of the support plate;

the first vent hole is provided with two strip-shaped side walls which are oppositely arranged, and the extending direction of the strip-shaped side walls is parallel to the extending direction of the first vent hole;

every the fin corresponds one first ventilation hole setting, at least a part of fin is located with this fin corresponding two in the first ventilation hole between the bar lateral wall.

9. The LED lamp heat dissipation assembly of any one of claims 1 to 5, wherein the number of the second ventilation holes is multiple, the second ventilation holes are annularly distributed on the top cover, and an area between two adjacent heat dissipation fins is correspondingly communicated with at least one second ventilation hole.

10. An LED lamp comprising the LED lamp heat sink assembly of any one of claims 1 to 9 and an LED light source, wherein the LED light source is disposed on the mounting surface.

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