Heat dissipation device

Abstract

The utility model relates to the technical field of lamp heat dissipation, in particular to a heat dissipation device. The heat dissipation device is composed of a bottom plate, a first heat conduction assembly, a second heat conduction assembly and a heat dissipation assembly. A first heat conduction assembly is arranged on one side face of the bottom plate, and a heat dissipation assembly is vertically arranged. The first heat conduction assembly and the heat dissipation assembly are in contact connection through the second heat conduction assembly. The heat dissipation assembly is composed of a plurality of cooling fins. The radiating fin is composed of two U-shaped parts and a connecting part in the section direction; the bottoms of the two U-shaped parts are connected through a connecting part; an axial hole is formed in the connecting part; the first heat conduction assembly is connected with the second heat conduction assembly; and the surface of the U-shaped part is convex-concave. According to the high-power outdoor lamp, the heat dissipation effect problem of the high-power outdoor lamp is solved; the heat dissipation device can be applied to outdoor lamps.

Description

Technical Field

[0001] The utility model relates to the technical field of lamp heat dissipation, in particular to a heat dissipation device. Background Art

[0002] See the Chinese utility model patent with announcement number CN 211925524 U; a heat dissipation device suitable for outdoor lamps is disclosed; the device is composed of a base plate, a first heat-conducting component, a second heat-conducting component and a heat-dissipating component; one side of the base plate is used to set the light source, and the other side is parallel to the first heat-conducting component; the second heat-conducting component is vertically arranged on the base plate and abuts on the top of the first heat-conducting component, and the heat-dissipating component is vertically arranged on the base plate and abuts on the outside of the second heat-conducting component. Among them, the first heat-conducting component includes a first heat pipe and a second heat pipe, the first heat pipe is arranged on the center line of the base plate, the second heat pipe is arranged on both sides of the first heat pipe, and the two ends of the second heat pipe extend outward along the first heat pipe. The second heat-conducting group includes a third heat pipe and a fourth heat pipe, and the third heat pipe includes a horizontal part and a vertical part: the horizontal part and the vertical part are both arranged in a straight line, the horizontal part is parallel to the top of the first heat-conducting component, the vertical part is vertically connected to the end of the horizontal part, so that the vertical part can be vertically connected to the base plate, and the heat-dissipating component is vertically connected to the base plate so that the vertical part of the third heat pipe abuts against the lower part of the heat-dissipating component. One end of the fourth heat pipe is coupled to the third heat pipe, and the other end is abutted to the upper part of the heat dissipation assembly. The heat dissipation assembly includes a plurality of heat dissipation fins, which are arranged on the bottom plate along the center and periphery of the bottom plate, and the plurality of heat dissipation fins are arranged at intervals so as to form a heat dissipation channel between two adjacent heat dissipation fins. The heat dissipation fin includes a first mounting groove, a second mounting groove, a first heat dissipation portion, and a second heat dissipation portion. The first mounting groove and the second mounting groove are used for welding the third heat pipe vertical portion and the fourth heat pipe.

[0003] The technical solution disclosed in the aforementioned patent has the following defects:

[0004] 1. The cross-section of the first heat pipe and the second heat pipe as the heat conducting component is square. The square heat conducting pipe not only increases the difficulty of processing, but also easily produces defective products. From the perspective of thermal conductivity, the square cross-sectional shape makes the heat conduction effect between the bottom plate and the heat conducting component lower.

[0005] Second, the heat of the heat-conducting component is transferred to the heat sink through the third heat pipe and the fourth heat pipe; correspondingly, the heat sink needs to be provided with a first mounting groove and a second mounting groove. The two-tube structure of the third heat pipe and the fourth heat pipe increases the number of components on the one hand, and also makes the structure of the heat sink complex on the other hand; it cannot effectively reduce the cost. Moreover, its heat conduction effect is not improved.

[0006] 3. The heat sink is responsible for the final heat dissipation. Although the technical solution of the aforementioned patent increases the heat dissipation area by using two U-shaped first heat dissipation parts and second heat dissipation parts, the heat dissipation effect is still insufficient for high-power outdoor lamps. Utility Model Content

[0007] The technical problem solved by the utility model is to provide a heat dissipation device, which can improve product yield, reduce components and enhance heat dissipation efficiency.

[0008] The technical solution of the utility model to solve the above technical problems is:

[0009] The heat dissipation device is composed of a base plate, a first heat-conducting component, a second heat-conducting component and a heat dissipation component; the first heat-conducting component is arranged on a side of the base plate, and the heat dissipation component is arranged vertically; the first heat-conducting component and the heat dissipation component are contact-connected through the second heat-conducting component; it is characterized in that: the heat dissipation component is composed of a plurality of heat sinks; the cross-sectional direction of the heat sink is composed of two U-shaped parts and a connecting part; the openings of the two U-shaped parts are arranged in opposite directions, and the bottoms are connected through the connecting part; an axial hole is arranged on the connecting part; it is connected to the second heat-conducting component through the axial hole; the surface of the U-shaped part is arranged to be convex and concave.

[0010] The side edges of the U-shaped portion of the heat sink are arranged in a convex-concave shape.

[0011] The side edges of the U-shaped portion of the heat sink are arranged in a strip-like convex-concave shape along the axial direction.

[0012] The first heat-conducting component is composed of a first heat pipe arranged in the center and second heat pipes arranged on both sides. The cross-sections of the first heat pipe and the second heat pipe are planar on the top and arc-shaped on the bottom; the two ends of the planar shape are connected to the two ends of the arc shape; the first heat pipe and the second heat pipe are recessed in the bottom plate; the planar top surface is smoothly connected to the surface of the bottom plate.

[0013] The second heat-conducting component only includes the third heat pipe; the third heat pipe includes a horizontal part and a vertical part, the vertical part is vertically connected to the end of the horizontal part; the horizontal part is connected in parallel above the first heat-conducting component; the vertical part is inserted into the axial hole of the heat sink for connection, and the length of the vertical part is equivalent to the length of the axial hole.

[0014] The utility model sets the side of the U-shaped part of the heat sink of the heat dissipation assembly into a strip-shaped convex and concave shape, which can effectively increase the surface area of ​​the heat sink, thereby improving the heat dissipation effect, reducing the temperature of the lamp and extending its service life. At the same time, while ensuring the heat dissipation effect, the power of the applicable lamp can also be improved. The first heat-conducting assembly is set to an upper flat surface and a lower arc-shaped structure, which can ensure the heat conduction effect between the bottom plate and the first heat-conducting assembly while reducing the occupied space and the heat pipe. The second heat-conducting assembly is designed as a heat pipe connected to a group of horizontal sections and vertical sections, and its vertical section is directly connected to the heat sink at one time, instead of designing the second heat-conducting assembly as two groups of heat pipes. On the one hand, it reduces the number of components, and on the other hand, it can avoid the problem of low heat conduction efficiency caused by multiple contact conduction villages. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings:

[0016] Figure 1 It is a top view of the heat sink 1 of the utility model;

[0017] Figure 2 It is a three-dimensional diagram of the heat sink 1 of the utility model;

[0018] Figure 3 It is a cross-sectional schematic diagram of the first heat-conducting component 2 of the utility model;

[0019] Figure 4 It is a three-dimensional diagram of the first heat-conducting component 2 of the utility model;

[0020] Figure 5 It is a three-dimensional diagram of the second heat-conducting component 3 of the utility model;

[0021] Figure 6 This is one of the three-dimensional diagrams of the partial assembly state of the heat dissipation device of the utility model;

[0022] Figure 7 This is the second stereoscopic diagram of the partial assembly state of the heat dissipation device of the utility model;

[0023] Figure 8 This is the third stereoscopic diagram of the partial assembly state of the heat dissipation device of the utility model. DETAILED DESCRIPTION

[0024] The following embodiments are descriptions of specific implementation methods of the present invention. Such descriptions are intended to facilitate the understanding of the technical solutions of the present application by those skilled in the art, and are not intended to limit the protection scope of the technical solutions of the present invention. All equivalent transformations that can be obtained according to the descriptions of the embodiments of the present invention should be within the protection scope of the present invention.

[0025] like Figure 6 , 7As shown in Figures 8, the heat dissipation device of the present invention is composed of a base plate 4, a first heat-conducting component 2, a second heat-conducting component 3 and a heat dissipation component 1; the first heat-conducting component 2 is arranged on one side of the base plate 4, and a lamp is arranged on the other side (outside); at the same time, the heat dissipation component 1 is arranged vertically. Figure 7 The shape shown in the figure is that only one heat sink 1 is provided; it is shown in a diagrammatic manner only for ease of understanding. In fact, the heat sink component 1 is composed of a plurality of heat sinks 1, which are arranged along the circumference of the bottom plate 4 and near the circumference. The first heat conducting component 2 and the heat sink component 1 are contact-connected through the second heat conducting component 3.

[0026] See Figure 1 , 2 As shown, the heat dissipation component 1 of the utility model is composed of a plurality of heat sinks 1; the cross-sectional direction of the heat sink 1 is composed of two U-shaped parts 11 and a connecting part 12; the openings of the two U-shaped parts 11 are set in opposite directions, and the bottoms are connected by the connecting part 12; an axial hole is set on the connecting part 12; it is plugged with the second heat-conducting component 3 through the axial hole; the surface of the U-shaped part 11 is set to be convex and concave. Specifically, the side of the U-shaped part 11 is set to be strip-shaped convex and concave along the axial direction. Of course, the direction of the convex and concave is not limited to that shown in the figure; it can also be set in directions perpendicular to the axial direction. The convex and concave shape is designed to increase the surface area of ​​the heat sink 1; it is to increase the heat dissipation surface area and improve the heat dissipation effect through the convex and concave structure within the limited space of the heat dissipation device.

[0027] See Figure 3 , 4 The first heat-conducting component 2 shown is composed of a first heat pipe arranged in the center and a second heat pipe arranged on both sides of the first heat pipe. The two ends of the second heat pipe are bent and extended to both sides so that the first heat-conducting component 2 is arranged more evenly on the bottom plate 4 as a whole to achieve uniform heat conduction. The cross-section of the first heat pipe and the second heat pipe is a plane 21 on the top surface and an arc 21 on the bottom; the two ends of the plane 21 are connected to the two ends of the arc 22; the first heat pipe and the second heat pipe are recessed in the bottom plate 4; the top surface of the plane 21 is flat with the surface of the bottom plate 4. In this way, a smaller groove can be opened on the bottom plate 4 to achieve the same heat conduction effect. At the same time, the processing and forming of the first heat pipe and the second heat pipe are also simpler.

[0028] See Figure 5As shown, the second heat-conducting component 3 of the utility model only includes the third heat pipe 3; the third heat pipe 3 includes a horizontal part and a vertical part, the vertical part is vertically connected to the end of the horizontal part; the horizontal part is parallel to the top of the first heat-conducting component; the vertical part is inserted into the axial hole of the heat sink 1, and is connected to the axial hole of the heat sink by welding or other methods; the length of the vertical part is equivalent to the length of the axial hole. In this way, heat conduction from the first heat-conducting component 2 to the heat-dissipating component 1 is realized through a group of third heat pipes 3; the structure of the heat sink 1 is simplified, and the fourth heat pipe is reduced; and only the length of the vertical part of the third heat pipe 3 is appropriately increased.

[0029] The above is a description of the improved part of the utility model; for the detailed description part, please refer to the Chinese utility model patent with publication number CN211925524 U.

Claims

1. A heat dissipation device, the heat dissipation device is composed of a base plate, a first heat-conducting component, a second heat-conducting component and a heat dissipation component; the first heat-conducting component is arranged on a side of the base plate, and the heat dissipation component is arranged vertically; the first heat-conducting component and the heat dissipation component are contact-connected through the second heat-conducting component; characterized in that: The heat dissipation component is composed of a plurality of heat sinks; the cross-sectional direction of the heat sink is composed of two U-shaped parts and a connecting part; the openings of the two U-shaped parts are arranged in opposite directions, and the bottoms are connected by the connecting part; an axial hole is arranged on the connecting part; it is connected to the second heat conduction component through the axial hole; the surface of the U-shaped part is arranged to be convex and concave.

2. The heat dissipation device according to claim 1, characterized in that: The side edges of the U-shaped portion of the heat sink are configured to be convex and concave.

3. The heat dissipation device according to claim 2, characterized in that: The side edges of the U-shaped portion of the heat sink are arranged in a strip-like convex-concave shape along the axial direction.

4. The heat dissipation device according to claim 1, 2 or 3, characterized in that: The first heat-conducting component is composed of a first heat pipe arranged in the center and second heat pipes arranged on both sides. The cross-sections of the first heat pipe and the second heat pipe are planar on the top and arc-shaped on the bottom; the two ends of the planar shape are connected to the two ends of the arc shape; the first heat pipe and the second heat pipe are recessed in the bottom plate; the planar top surface is smoothly connected to the surface of the bottom plate.

5. The heat dissipation device according to claim 1, 2 or 3, characterized in that: The second heat-conducting component only includes the third heat pipe; the third heat pipe includes a horizontal part and a vertical part, the vertical part is vertically connected to the end of the horizontal part; the horizontal part is connected in parallel above the first heat-conducting component; the vertical part is inserted into the axial hole of the heat sink for connection, and the length of the vertical part is equivalent to the length of the axial hole.

6. The heat dissipation device according to claim 4, characterized in that: The second heat-conducting component only includes the third heat pipe; the third heat pipe includes a horizontal part and a vertical part, the vertical part is vertically connected to the end of the horizontal part; the horizontal part is connected in parallel above the first heat-conducting component; the vertical part is inserted into the axial hole of the heat sink for connection, and the length of the vertical part is equivalent to the length of the axial hole.

Images