Heat dissipation device and lamp

Abstract

The utility model belongs to the technical field of equipment heat dissipation, and particularly relates to a heat dissipation device and a lamp. The heat dissipation device comprises a first heat dissipation piece, a flow guide fan and a heat dissipation fan, the first heat dissipation piece is used for being connected with a heat-dissipated module, a mounting cavity is formed in the first heat dissipation piece, and a first heat dissipation channel communicating with the outside and the mounting cavity is formed in the first heat dissipation piece; the cooling fan is arranged in the mounting cavity, and the flow guide fan and the first cooling piece are arranged at intervals. The cooled module of the electrical equipment can continuously generate heat in the working process, and the working performance of the cooled module can be influenced by the generated heat. In the application, the first heat dissipation piece is connected with the heat-dissipated module, heat generated by the heat-dissipated module in the working process is conducted through the first heat dissipation piece to quickly reduce the temperature of the heat-dissipated module, and the first heat dissipation piece is air-cooled through the flow guide fan and the heat dissipation fan, so that the heat is released from the inside of the electrical equipment to the outside of the electrical equipment, and the heat dissipation efficiency is improved. And the working performance of the electrical equipment is ensured.

Description

Technical Field

[0001] This application belongs to the technical field of equipment heat dissipation, and particularly relates to a heat dissipation device and a lamp. Background Art

[0002] Electrical equipment generally includes a power supply module and a functional module. The power supply module is used to provide power for the functional module so that the functional module can function and work. During the use of electronic equipment, both the power supply module and the functional module are prone to heat generation. Once the temperatures of the power supply module and the functional module are too high, the normal operation of the power supply module and the functional module will be affected. Therefore, a heat dissipation device needs to be provided inside the electrical equipment to ensure the performance of the electrical equipment and thus enable normal operation. Utility Model Content

[0003] The purpose of this application is to provide a heat dissipation device and a lamp to achieve heat dissipation of electrical equipment.

[0004] To achieve the above purpose, on the one hand, this application provides a heat dissipation device, including:

[0005] A first heat dissipation member, which is used to connect with the module to be dissipated and forms an installation cavity inside. A first heat dissipation channel communicating with the outside and the installation cavity is formed on the first heat dissipation member;

[0006] A guiding fan, which is arranged at an interval with the first heat dissipation member and is used to introduce the outside air flow into the installation cavity; and

[0007] A heat dissipation fan, which is arranged inside the installation cavity. The heat dissipation fan is used to guide the air flow introduced by the guiding fan to contact with the first heat dissipation member and make the air flow flow out to the outside through the first heat dissipation channel.

[0008] In some embodiments, the heat dissipation device further includes a connection housing sleeved on the outer peripheral wall of the first heat dissipation member. The guiding fan is arranged inside the connection housing and is connected to the inner peripheral wall of the connection housing. An air inlet and an air outlet are formed on the connection housing. The guiding fan is used to introduce the air flow from the air inlet, and the first heat dissipation channel is in air path communication with the air outlet.

[0009] In some embodiments, an installation seat is provided on the inner side wall of the connection housing. The heat dissipation device further includes a fixing frame connected to the installation seat, and the guiding fan is arranged inside the fixing frame.

[0010] In some embodiments, the first heat dissipation member includes a plurality of first heat dissipation parts arranged at intervals in the circumferential direction. The first heat dissipation channel is formed between adjacent first heat dissipation parts, and the plurality of first heat dissipation parts enclose to form the installation cavity.

[0011] In some embodiments, the heat dissipation device includes a second heat dissipation member disposed in the installation cavity. One end of the second heat dissipation member in the axial direction is connected to the same heat dissipation module as the first heat dissipation member, and the other end of the second heat dissipation member in the axial direction is connected to the cooling fan.

[0012] In some embodiments, the second heat dissipation member includes a plurality of second heat dissipation portions arranged at intervals, and a second heat dissipation channel is formed between adjacent second heat dissipation portions. The second heat dissipation channel is communicated with the first heat dissipation channel.

[0013] In some embodiments, both the first heat dissipation portion and the second heat dissipation portion extend in the axial direction, and the cross-sectional shapes of the first heat dissipation portion and the second heat dissipation portion are both arc-shaped.

[0014] In a second aspect of the specific embodiments of the present application, there is also a lighting fixture, including:

[0015] A heat dissipation device;

[0016] A power supply module and a functional module arranged at intervals in the axial direction, and the heat dissipation device is arranged between the power supply module and the functional module.

[0017] In some embodiments, the lighting fixture further includes a heat conducting member connected to the power supply module. The functional module is connected to the first heat dissipation member, and the first heat dissipation member, the cooling fan, the guiding fan, and the heat conducting member are arranged in sequence in the axial direction.

[0018] In some embodiments, the heat conducting member includes:

[0019] A connecting portion connected to the power supply module; and

[0020] A plurality of heat conducting portions arranged at intervals on the outer peripheral wall of the connecting portion in the circumferential direction of the connecting portion. A heat conducting channel is formed between adjacent heat conducting portions. The heat conducting portions extend in the axial direction, and the cross-sectional shapes of the heat conducting portions are all arc-shaped.

[0021] Through the above technical solutions, the specific embodiments provided by the present application have the following beneficial effects:

[0022] During the operation of the heat dissipation module of the electrical equipment, heat will be continuously generated. When the generated heat causes the temperature of the heat dissipation module to be too high, the working performance of the heat dissipation module will be affected, and even the heat dissipation module cannot work properly. In the present application, the first heat dissipation member is connected to the heat dissipation module, and the heat generated by the heat dissipation module during operation is conducted through the first heat dissipation member to quickly reduce the temperature of the heat dissipation module. The first heat dissipation member is air-cooled by the guiding fan and the cooling fan, so that the heat is released from the electrical equipment to the outside of the electrical equipment, thereby ensuring the working performance of the electrical equipment.

[0023] Other features and advantages of the embodiments of the present application will be described in detail in the subsequent detailed description part. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The drawings are used to provide a further understanding of the embodiments of the present application, and constitute a part of the specification. Together with the following detailed description, they are used to explain the embodiments of the present application, but do not constitute a limitation to the embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on the structures shown in these drawings without creative efforts. In the drawings:

[0025] Figure 1 is a schematic structural diagram of a heat dissipation device in a specific embodiment according to the present application;

[0026] Figure 2 is Figure 1 a schematic diagram of the A-A cross-section in

[0027] Figure 3 is an exploded view of a heat dissipation device in a specific embodiment according to the present application (the guide fan is connected to the fixing frame);

[0028] Figure 4 is an exploded view of the heat dissipation device from another perspective in a specific embodiment according to the present application (the guide fan is connected to the fixing frame);

[0029] Figure 5 is an exploded view of the heat dissipation device in a specific embodiment according to the present application (the guide fan is separated from the fixing frame);

[0030] Figure 6 is a schematic structural diagram of a first heat dissipation member and a second heat dissipation member in a specific embodiment according to the present application;

[0031] Figure 7 is an assembly schematic diagram of a heat dissipation fan and a first heat dissipation member in a specific embodiment according to the present application;

[0032] Figure 8 is an assembly schematic diagram of a guide fan and a fixing frame in a specific embodiment according to the present application;

[0033] Figure 9 is a schematic structural diagram of a connection housing in a specific embodiment according to the present application;

[0034] Figure 10 is a schematic structural diagram of a lamp (without a lampshade) in a specific embodiment according to the present application;

[0035] Figure 11 is an exploded view of a lamp (without a lampshade) in a specific embodiment according to the present application;

[0036] Figure 12 Schematic diagram of the assembly of the heat conducting member and the heat dissipation device in a specific embodiment of the present application;

[0037] Figure 13 is Figure 12 Schematic diagram of the B-B cross-section in

[0038] Figure 14 Schematic diagram of the assembly of the heat conducting member and the power module in a specific embodiment of the present application;

[0039] Figure 15 Schematic diagram of the structure of the lamp (with lampshade) in a specific embodiment of the present application.

[0040] Description of the reference numerals in the drawings

[0041] 100, heat dissipation device; 200, power module; 300, functional module; 400, mounting member; 500, lampshade; 1, cooling fan; 2, guide fan; 3, first heat dissipating member; 31, first heat dissipating portion; 32, first heat dissipation channel; 33, mounting portion; 34, fixing hole; 35, mounting cavity; 4, heat conducting member; 41, heat conducting portion; 42, connecting portion; 43, heat conducting channel; 5, second heat dissipating member; 51, second heat dissipating portion; 52, second heat dissipation channel; 6, connecting housing; 61, air inlet; 62, air outlet; 63, mounting seat; 7, fixing bracket. Detailed description of the specific embodiment

[0042] The following will describe in detail the specific embodiments of the present application with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for explaining and understanding the present application, and are not used to limit the present application.

[0043] The following will describe the heat dissipation device 100 and the lamp terms of the present application with reference to the accompanying drawings.

[0044] As Figures 1 to 8 shown, a specific embodiment of the present application provides a heat dissipation device 100, which includes a first heat dissipating member 3, a guide fan 2 and a cooling fan 1. Among them, the first heat dissipating member 3 is used to connect with the heat dissipation module and forms a mounting cavity 35 inside. A first heat dissipation channel 32 communicating with the outside and the mounting cavity 35 is formed on the first heat dissipating member 3; the guide fan 2 is arranged at an interval from the first heat dissipating member 3 and is used to introduce the external air flow into the mounting cavity 35; the cooling fan 1 is arranged in the mounting cavity 35, and the cooling fan 1 is used to guide the air flow introduced by the guide fan 2 to contact with the first heat dissipating member 3 and discharge the air flow from the first heat dissipation channel 32 to the outside.

[0045] During the operation of the heat-dissipating module of the electrical device, heat is generated, causing the temperature to rise. The first heat sink 3 of the heat dissipation device 100 is connected to the heat-dissipating module of the electrical device. The first heat sink 3 can quickly transfer the heat of the heat-dissipating module to itself, so the temperature of the first heat sink rises and the temperature of the heat-dissipating module decreases. In this application, the guide fan 2 is used to direct the relatively low-temperature outside air flow into the installation cavity 35 to cool the first heat sink 3 by air cooling. After the air flow enters the electrical device, the heat dissipation fan 1 changes the flow direction of the air flow so that the air flow fully contacts the first heat sink 3, and the air flow that absorbs the heat of the first heat sink 3 can flow out to the outside through the first heat dissipation channel 32 after the temperature rises, so as to realize the cooling of the first heat sink 3, so that the first heat sink 3 can continuously transfer the heat of the heat-dissipating module, and then ensure the working performance of the electrical device.

[0046] Specifically, the first heat sink 3 is made of a material that can conduct heat and has a relatively high thermal conductivity, such as various metal materials. The heat conduction performance of the first heat sink 3 is used to absorb and transfer the heat generated by the heat-dissipating module, so as to realize the rapid cooling of the heat-dissipating module. However, the first heat sink 3 that absorbs heat will also increase in temperature, and if the temperature of the first heat sink 3 is too high, the cooling efficiency will decrease.

[0047] To ensure the heat absorption capacity of the first heat sink 3, the guide fan 2 and the heat dissipation fan 1 are used to generate an air flow that enters the interior of the electrical device from the outside and flows out of the electrical device through the first heat dissipation channel 32. First, the low-temperature air flow flows towards the heat dissipation fan 1 in the installation cavity 35 under the action of the guide fan 2. Then, the air flow contacts the first heat sink 3 under the action of the heat dissipation fan 1 for heat exchange and forms a relatively high-temperature air flow. Finally, the relatively high-temperature air flow flows out to the outside through the first heat dissipation channel 32 under the action of the heat dissipation fan 1. By repeating the above process of air flow and heat exchange, the first heat sink 3 can be continuously cooled, so that the first heat sink 3 can continuously cool the heat-dissipating module of the electrical device, and then ensure the working performance of the electrical device to continuously operate.

[0048] In the exemplary embodiment of this application, it is described that the first heat sink 3 is connected to the axial end face of the heat-dissipating module, and the guide fan 2 and the first heat sink 3 are arranged at an axial interval.

[0049] In some embodiments, the first heat sink 3 includes a plurality of first heat dissipation parts 31 arranged at intervals in the circumferential direction. A first heat dissipation channel 32 is formed between adjacent first heat dissipation parts 31, and the plurality of first heat dissipation parts 31 enclose to form an installation cavity 35.

[0050] Specifically, the first heat sink 3 is disposed on the axial end face of the heat dissipation module. The first heat dissipation portions 31 are arranged at intervals along the circumferential direction of the axial end face of the heat dissipation module. The heat of the heat dissipation module is conducted through the plurality of first heat dissipation portions 31, thereby quickly reducing the temperature of the heat dissipation module. An installation cavity 35 is formed inside the plurality of first heat dissipation portions 31 in the radial direction. The cooling fan 1 is installed in the installation cavity 35 and is arranged at a radial interval from the first heat dissipation portions 31, thereby preventing interference between the cooling fan 1 and the first heat dissipation portions 31.

[0051] Further, during the flow of the air flow, heat exchange first occurs between the end face of the first heat dissipation portion 31 and the air flow, and then the air flow flows out to the outside from the first heat dissipation channel 32. Heat exchange also occurs between the air flow and the first heat dissipation portion 31 when the air flow passes through the first heat dissipation channel 32, so that the air flow is in full contact with the first heat dissipation portion 31, thereby improving the temperature reduction effect of the heat dissipation device 100. The cooling fan 1 plays a role in changing the direction of the air flow during this process, that is, changing the air flow flowing along the axial direction from the guide fan 2 into the air flow flowing out along the radial direction from the first heat dissipation channel 32.

[0052] In some embodiments, the heat dissipation device 100 includes a second heat sink 5. The second heat sink 5 is disposed in the installation cavity 35. The second heat sink 5 and the first heat sink 3 are connected to the same heat dissipation module.

[0053] Specifically, one end of the second heat sink 5 in the axial direction is connected to the heat dissipation module. The heat dissipation module is cooled by the first heat sink 3 and the second heat sink 5, so that the heat generated by the heat dissipation module is quickly conducted to the first heat sink 3 and the second heat sink 5, thereby improving the temperature reduction effect of the heat dissipation device 100.

[0054] Further, the other end of the second heat sink 5 in the axial direction is connected to the cooling fan 1. By connecting the cooling fan 1 and the second heat sink 5 and disposing them in the installation cavity 35, not only the structure of the heat dissipation device 100 is made more compact, but also the air flow comes into more contact with the second heat sink 5, thereby improving the temperature reduction effect of the heat dissipation device 100.

[0055] In some embodiments, the second heat sink 5 includes a plurality of second heat dissipation portions 51 arranged at intervals. The heat of the heat dissipation module is conducted through the plurality of second heat dissipation portions 51, thereby quickly reducing the temperature of the heat dissipation module.

[0056] Specifically, the plurality of second heat dissipation portions 51 are arranged on the axial end face of the heat dissipation module. The second heat dissipation portions 51 are arranged at intervals from the first heat dissipation portions 31. A second heat dissipation channel 52 is formed between adjacent second heat dissipation portions 51. The second heat dissipation channel 52 is communicated with the first heat dissipation channel 32, so that the air flow can reach the second heat dissipation portions 51 and then flow out to the outside from the second heat dissipation channel 52 and the first heat dissipation channel 32, thereby improving the temperature reduction effect of the heat dissipation device 100.

[0057] Moreover, during the flow of the air current, it not only contacts the end face of the second heat dissipation part 51, but also contacts the side face of the second heat dissipation part 51, thereby increasing the contact area between the air current and the second heat dissipation part 51, and further improving the cooling effect of the heat dissipation device 100.

[0058] Preferably, both the first heat dissipation part 31 and the second heat dissipation part 51 extend along the axial direction, and the cross-sectional shapes of the first heat dissipation part 31 and the second heat dissipation part 51 are both arc-shaped.

[0059] Since the cooling fan 1 drives the air current to flow by rotating, therefore, by setting the cross-sectional shapes of the first heat dissipation part 31 and the second heat dissipation part 51 to be arc-shaped, the shapes of the first heat dissipation channel 32 and the second heat dissipation channel 52 are matched with the flowing direction of the air current, so that the air current can quickly flow through the first heat dissipation channel 32 and the second heat dissipation channel 52 and flow out to the outside, and further accelerate the flowing speed of the air current to improve the cooling effect of the heat dissipation device 100.

[0060] Preferably, the first heat dissipation member 3 further includes an installation part 33 connecting the first heat dissipation part 31 and the module to be heat dissipated, the second heat dissipation member 5 is also arranged on the installation part 33, and the installation part 33 is also made of a heat-conducting material.

[0061] As Figure 9 shown, the heat dissipation device 100 further includes a connecting housing 6, the connecting housing 6 is sleeved on the outer peripheral wall of the first heat dissipation member 3, the guiding fan 2 is arranged in the connecting housing 6 and connected to the inner peripheral wall of the connecting housing 6, an air inlet 61 and an air outlet 62 are formed on the connecting housing 6, and the guiding fan 2 is used to introduce the air current from the air inlet 61, and the first heat dissipation channel 32 is in air path communication with the air outlet 62. In this application, by arranging the connecting housing 6 to fix the first heat dissipation member 3 and the guiding fan 2, the stability of the heat dissipation device 100 is strengthened.

[0062] Specifically, an installation seat 63 is arranged on the inner side wall of the connecting housing 6, the guiding fan 2 is provided with a fixing frame 7 which is fixedly connected to the installation seat 63 to realize the installation of the guiding fan 2 and increase the air-gathering effect. Moreover, a fixing member is further arranged on the inner side wall of the connecting housing 6, and a fixing hole 34 for tightly connecting with the fixing member is formed on the first heat dissipation member 3 to realize the fixation of the connecting housing 6 and the first heat dissipation member 3, so that the structure of the heat dissipation device 100 is more stable and reliable.

[0063] Preferably, a plurality of air inlets 61 are arranged on the connecting housing 6 at intervals in the circumferential direction, and a plurality of air outlets 62 are arranged on the connecting housing 6 at intervals in the circumferential direction, thereby increasing the air flow rate and further improving the cooling effect of the heat dissipation device 100.

[0064] Further, a plurality of air inlets 61 are provided at intervals along the axial direction of the connecting housing 6, and a plurality of air outlets 62 are provided at intervals along the axial direction of the connecting housing 6, so as to further increase the air flow rate, and further improve the cooling effect of the heat dissipation device 100.

[0065] The flow path of the air flow is to first enter from the air inlet 61, then sequentially pass through the guide fan 2, the heat dissipation fan 1, the second heat dissipation member 5 and the first heat dissipation member 3, and finally flow out from the air outlet 62 to the outside. In this application, the first heat dissipation member 3 and the second heat dissipation member 5 are provided to absorb and transfer the heat generated by the heat dissipation module of the electrical equipment during operation, and the guide fan 2 and the heat dissipation fan 1 are rotated to generate an air flow, so as to perform air cooling on the first heat dissipation member 3 and the second heat dissipation member 5 so that the first heat dissipation member 3 and the second heat dissipation member 5 can continuously cool the heat dissipation module, thereby ensuring the normal operation of the electrical equipment.

[0066] It should be noted that the arrangement manner of the first heat dissipation portion 31 of the first heat dissipation member 3, the arrangement manner of the second heat dissipation portion 51 of the second heat dissipation member 5, and the cross-sectional shape of the connecting housing 6 are all determined according to the cross-sectional shape of the electrical equipment, so that the heat dissipation device 100 has better assemblability.

[0067] Such as Figure 10 and Figure 11 As shown, a specific embodiment of the present application further provides a lamp, including a heat dissipation device 100, a power supply module 200 and a function module 300. Among them, the power supply module 200 and the function module 300 are arranged at intervals along the axial direction, and the heat dissipation device 100 is arranged between the power supply module 200 and the function module 300. Since the lamp adopts all embodiments of the heat dissipation device 100, the lamp has all the beneficial effects brought by the heat dissipation device 100.

[0068] As a common electrical equipment, the function module 300 includes lamp beads for emitting light. The lamp beads are connected to the power supply module 200 through wires. The lamp beads will continuously generate heat during the light emitting process, and the power supply module 200 will continuously generate heat during the power supply process.

[0069] Such as Figures 12 to 14 As shown, in some embodiments, the lamp further includes a heat conducting member 4 connected to the power supply module 200. The function module 300 is connected to the first heat dissipation member 3. The first heat dissipation member 3, the heat dissipation fan 1, the guide fan 2 and the heat conducting member 4 are sequentially arranged along the axial direction.

[0070] Among them, the heat conducting member 4 includes a connecting portion 42 and a plurality of heat conducting portions 41. Among them, the connecting portion 42 is connected to the heat dissipation module; the plurality of heat conducting portions 41 are arranged at intervals along the circumferential direction of the connecting portion 42 on the outer peripheral wall of the connecting portion 42. A heat conducting channel 43 is formed between adjacent heat conducting portions 41. The heat conducting portions 41 extend along the axial direction and the cross-sectional shape of the heat conducting portions 41 is arc-shaped.

[0071] Specifically, both the connecting part 42 and the heat-conducting part 41 are made of heat-conducting materials. The connecting part 42 and the heat-conducting part 41 are both arranged on the axial end surface of the power module 200. The heat generated by the power module 200 is absorbed and transferred through the heat-conducting performance of the connecting part 42 and the heat-conducting part 41, thereby reducing the temperature of the power module 200 and further ensuring the normal operation of the power module 200.

[0072] Furthermore, the air flow passes through the heat-conducting channel 43 and contacts the side surface of the heat-conducting part 41 and the connecting part 42, thereby increasing the contact area between the air flow and the heat-conducting member 4, and further improving the cooling effect of the heat dissipation device 100.

[0073] Preferably, the cross-sectional shapes of the functional module 300 and the power module 200 of the lamp are both circular. Correspondingly, the first heat-dissipating parts 31 of the first heat-dissipating member 3 are arranged at intervals along the first circumferential direction on the end surface of the functional module 300, and the second heat-dissipating parts 51 of the second heat-dissipating member 5 are arranged at intervals along the second circumferential direction on the functional module 300. The diameter of the second circumferential direction is smaller than that of the first circumferential direction; the cross-section of the connecting part 42 of the heat-conducting member 4 is circular, and the heat-conducting parts 41 of the heat-conducting member 4 are arranged at intervals along the circumferential direction of the outer periphery of the connecting part 42; the cross-section of the connecting housing 6 is circular. In this application, by setting the cross-sections of the various components of the heat dissipation device 100 to be circular to adapt to the cross-sectional shape of the lamp, the heat dissipation device 100 can be better assembled with the functional module 300 and the power module 200.

[0074] The heat-dissipated modules of the lamp include a power module 200 and a functional module 300. The power module 200 and the functional module 300 will continuously generate heat during operation. When the generated heat causes the temperatures of the power module 200 and the functional module 300 to be too high, the too-high temperature will affect the working performance of the power module 200 and the functional module 300, and even cause the power module 200 and the functional module 300 to fail to work. In this application, the first heat-dissipating member 3 and the heat-conducting member 4 are respectively connected to the power module 200 and the functional module 300. The heat generated by the power module 200 during operation is conducted through the heat-conducting member 4, and the heat generated by the functional module 300 during operation is conducted through the first heat-dissipating member 3. The first heat-dissipating member 3 and the heat-conducting member 4 are air-cooled by the guide fan 2 and the heat dissipation fan 1, so as to release the heat from the lamp to the outside of the lamp, and further ensure the working performance of the lamp.

[0075] Specifically, both the first heat sink 3 and the heat conducting member 4 are made of materials that can conduct heat and have a relatively high thermal conductivity, such as various metal materials. The heat conducting member 4 is used to absorb and transfer the heat generated by the power module 200 through its heat conduction performance, and the first heat sink 3 is used to absorb and transfer the heat generated by the functional module 300 through its heat conduction performance, so as to quickly cool down the power module 200 and the functional module 300. However, the first heat sink 3 and the heat conducting member 4 that absorb heat will also increase in temperature, and if the temperature of the first heat sink 3 and the heat conducting member 4 is too high, the cooling efficiency will decrease.

[0076] To ensure the heat absorption capacity of the first heat sink 3 and the heat conducting member 4, the guide fan 2 and the heat dissipation fan 1 are used to generate an air flow that enters the interior of the lamp from the heat conduction channel 43 and flows out of the lamp from the heat dissipation channel. First, the cold air flow enters from the heat conduction channel 43 and exchanges heat with the relatively hot heat conducting member 4 to form a relatively cold air flow; second, the relatively cold air flow then flows through the guide fan 2 to the first heat sink 3 and exchanges heat with the relatively hot first heat sink 3 to form a relatively hot air flow; finally, the relatively hot air flow is blown out to the outside by the heat dissipation fan 1 through the first heat dissipation channel 32. By repeating the above process of air flow and heat exchange, the first heat sink 3 and the heat conducting member 4 can be continuously cooled, thereby cooling the functional module 300 and the power module 200 of the lamp, and further ensuring the working performance of the lamp to continuously operate.

[0077] Preferably, the first heat sink 3, the heat conducting member 4, the heat dissipation fan 1 and the guide fan 2 are coaxially arranged, so that the air flow passes through each module in turn during the flow process, and at the same time, it is convenient for the installation of each module.

[0078] The air flow path is to first enter from the air inlet 61 and contact the heat conducting member 4, and then pass through the guide fan 2, the first heat sink 3, the heat dissipation fan 1 and the second heat sink 5 in turn, and finally flow out to the outside from the air outlet 62. In this application, the first heat sink 3, the second heat sink 5 and the heat conducting member 4 are provided to absorb and transfer the heat generated by the heat dissipation module of the lamp during operation, and the rotation of the guide fan 2 and the heat dissipation fan 1 is used to generate an air flow, so as to perform an air cooling effect on the first heat sink 3, the second heat sink 5 and the heat conducting member 4, so that the first heat sink 3, the second heat sink 5 and the heat conducting member 4 can continuously cool the heat dissipation module, and further ensure the normal operation of the lamp.

[0079] As Figure 15 shown, in some embodiments, the lamp further includes a mounting member 400 sleeved on the outer peripheral wall of the lamp bead, and the mounting member 400 is provided with a retaining port for mounting external components such as the lamp shade 500.

[0080] In the description of the present application, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present application, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0081] In the present application, unless otherwise clearly defined and limited, the terms such as "installed", "connected", "coupled", "fixed", etc. shall be construed in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be a mechanical connection, an electrical connection, or communicable with each other; it may be directly connected, or indirectly connected through an intermediate medium, and may be the internal communication of two components or the interaction relationship between two components, unless otherwise clearly limited. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to specific circumstances.

[0082] In the description of this specification, the description with reference to terms such as "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials, or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, without contradiction, those skilled in the art can combine and combine the different embodiments or examples described in this specification and the features of different embodiments or examples.

[0083] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present application. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present application.

Claims

1. A heat dissipation device, characterized in that, Comprising: A first heat sink (3) for connecting with the module to be cooled and having an installation cavity (35) formed therein. A first heat dissipation channel (32) communicating with the outside and the installation cavity (35) is formed on the first heat sink (3); A guiding fan (2) arranged at an interval from the first heat sink (3) and used for guiding the outside air flow into the installation cavity (35); And A heat dissipation fan (1) arranged in the installation cavity (35). The heat dissipation fan (1) is used for guiding the air flow introduced by the guiding fan (2) to contact with the first heat sink (3) and discharging the air flow from the first heat dissipation channel (32) to the outside.

2. The heat dissipation device according to claim 1, wherein, The heat dissipation device (100) further includes a connecting housing (6) sleeved on the outer peripheral wall of the first heat sink (3). The guiding fan (2) is arranged in the connecting housing (6) and connected to the inner peripheral wall of the connecting housing (6). An air inlet (61) and an air outlet (62) are formed on the connecting housing (6). The guiding fan (2) is used for guiding the air flow from the air inlet (61), and the first heat dissipation channel (32) communicates with the air outlet (62).

3. The heat dissipation device according to claim 2, wherein An installation seat (63) is arranged on the inner side wall of the connecting housing (6). The heat dissipation device (100) further includes a fixing frame (7) connected to the installation seat (63), and the guiding fan (2) is arranged in the fixing frame (7).

4. The heat dissipation device according to claim 1, characterized in that, The first heat sink (3) includes a plurality of first heat dissipation parts (31) arranged at intervals in the circumferential direction. The first heat dissipation channel (32) is formed between adjacent first heat dissipation parts (31), and the plurality of first heat dissipation parts (31) enclose to form the installation cavity (35).

5. The heat dissipation device according to claim 4, wherein The heat dissipation device (100) includes a second heat sink (5). The second heat sink (5) is arranged in the installation cavity (35). One end of the second heat sink (5) along the axial direction is connected to the same module to be cooled as the first heat sink (3), and the other end of the second heat sink (5) along the axial direction is connected to the heat dissipation fan (1).

6. The heat dissipation device according to claim 5, wherein The second heat sink (5) includes a plurality of second heat dissipation parts (51) arranged at intervals. A second heat dissipation channel (52) is formed between adjacent second heat dissipation parts (51), and the second heat dissipation channel (52) communicates with the first heat dissipation channel (32).

7. The heat dissipation device according to claim 6, wherein, Both the first heat dissipation part (31) and the second heat dissipation part (51) extend along the axial direction and the cross-sectional shapes of the first heat dissipation part (31) and the second heat dissipation part (51) are both arc-shaped.

8. A lighting fixture, characterized in that, Comprising: The heat dissipation device (100) according to any one of claims 1 to 7; A power module (200) and a function module (300) arranged at intervals along the axial direction. The heat dissipation device (100) is arranged between the power module (200) and the function module (300).

9. The luminaire according to claim 8, characterized in that, The lamp further includes a heat conducting part (4) connected to the power module (200). The function module (300) is connected to the first heat sink (3), and the first heat sink (3), the heat dissipation fan (1), the guiding fan (2) and the heat conducting part (4) are arranged in sequence along the axial direction.

10. The luminaire according to claim 9, characterized in that, The heat conducting part (4) includes: A connecting portion (42) connected to the power supply module (200); and A plurality of heat conducting portions (41) are arranged at intervals along the circumferential direction of the connecting portion (42) on the outer peripheral wall of the connecting portion (42). A heat conducting channel (43) is formed between adjacent heat conducting portions (41). The heat conducting portions (41) extend axially and the cross-sectional shape of each heat conducting portion (41) is arc-shaped.

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