An airflow control system, a lighting fixture, and an airflow control method

Abstract

This invention provides an airflow control system, including a top shell, an airflow controller, and a cover. The top shell is connected to the cover via the airflow controller. The airflow controller includes an airflow inlet and an airflow guide, with the airflow inlet connected to the airflow guide. The airflow inlet has multiple airflow control plates, forming an airflow inlet channel. The airflow guide has a baffle for blocking airflow, and the top shell has an airflow outlet. The airflow inlet, airflow guide, and airflow outlet form a first airflow control section. Multiple heat dissipation fins are circumferentially spaced on the outer side of the baffle, and the cover and heat dissipation fins form a second airflow control section. This airflow control system utilizes air pressure difference to allow air to circulate between the inside and outside, achieving good heat dissipation. The heat dissipation method of this airflow control system is less affected by environmental factors and also features a simple and compact structure. In addition, this invention also provides an airflow-controlled lighting fixture and an airflow control method.

Description

Technical Field

[0001] This invention relates to the technical field of heat dissipation for lighting fixtures, and in particular to an airflow control system, a lighting fixture, and an airflow control method. Background Technology

[0002] Lighting fixtures are widely used in various locations as illumination tools, and their heat dissipation efficiency often affects their lifespan. Common heat dissipation methods for existing lighting fixtures include conduction, radiation, and convection; however, these methods are frequently affected by the external environment. For example, the effectiveness of conduction and radiation heat dissipation often depends on the height and size of the lamp body and its heat sink, while the effectiveness of convection heat dissipation depends on the ventilation conditions. However, in certain locations, such as factories, warehouses, and stadiums, large spaces often require high-powered ceiling lights as illumination tools. The heat dissipation requirements for this type of lighting fixture are far higher than those for home lighting. Furthermore, due to the variable environment in large spaces, the heat dissipation effect of these fixtures cannot be guaranteed. Therefore, the heat dissipation requirements of ceiling lights cannot be met by conventional heat dissipation methods.

[0003] Existing technical solutions disclose an indoor LED lighting bulb, including an LED light source, a circuit board, a light-transmitting cover enclosing the LED light source, and an electrically connected lamp holder. The circuit board is bonded to a heat dissipation device, which is integrally formed by a hollow heat sink and a chimney-shaped hollow column located on one end face of the heat sink. Multiple heat dissipation fins are spaced apart along the circumference of the heat sink, and the spaced portions of the heat sink, chimney-shaped column, and heat dissipation fins form multiple heat dissipation channels that directly convect with the air. Although this indoor LED lighting bulb combines heat dissipation through heat sink conduction and heat dissipation through heat dissipation channels, the heat dissipation principle of the heat dissipation channels is still the chimney effect. Its heat dissipation effect is related to the height difference of the heat dissipation channels and the degree of air circulation inside and outside the lamp. When the ventilation of the lamp's operating environment is poor, the corresponding heat dissipation effect will also be worse, thus affecting the durability of the lamp.

[0004] Therefore, it is necessary to provide a heat dissipation component and related lighting fixtures that can reduce the impact of external factors on heat dissipation. Summary of the Invention

[0005] To address the aforementioned problems in the prior art, this invention provides an airflow control system, comprising an airflow controller. The airflow controller utilizes the air pressure difference between the inside and outside to guide external cold air into itself. The external cold air, after passing through the airflow controller, is obstructed by a baffle, changing its direction of movement, and is then discharged from the top shell to achieve heat dissipation. In addition, the airflow controller utilizes heat dissipation fins and a cover on its outer side for heat exchange. Correspondingly, this invention also provides an airflow-controlled lighting fixture and an airflow control method.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An airflow control system includes a top shell, an airflow controller, and a cover. The top shell is connected to the cover via the airflow controller. The airflow controller includes an airflow inlet and an airflow guide, and the airflow inlet is connected to the airflow guide.

[0008] The airflow inlet is provided with multiple airflow control plates, and the airflow control plates form an airflow inlet channel;

[0009] The airflow guide is provided with a baffle to block the airflow, and the top shell is provided with an airflow outlet. The airflow inlet, the airflow guide, and the airflow outlet form a first airflow control section.

[0010] Multiple heat dissipation fins are arranged circumferentially on the outer side of the baffle, and the cover and the heat dissipation fins form a second airflow control section.

[0011] Preferably, the airflow control plate is circumferentially disposed in the airflow inlet, and the airflow control plate extends radially along the airflow controller, and the airflow inlet channel forms a structure that is wider on the outside and narrower on the inside.

[0012] Preferably, the airflow outlet is located on the top shell, and the airflow outlet is on a different side from the airflow inlet.

[0013] Preferably, the airflow outlet is provided with a plurality of outlet slots for discharging airflow.

[0014] Preferably, the top shell includes a bottom wall and a side wall, and the outlet groove extends from the bottom wall to the side wall.

[0015] Preferably, the baffle and the inner side of the airflow control plate form an airflow cavity, and the airflow inlet channel, the airflow cavity and the outlet groove form a first airflow channel.

[0016] Preferably, airflow grooves are formed between the heat dissipation fins, and the outer side of the cover forms a second airflow channel with the airflow grooves.

[0017] The present invention also provides an airflow control lamp, including a driving power supply, a light source, and an airflow control system as described in any one of claims 1-7, wherein the driving power supply is fixed between the top shell and the airflow controller, and the light source is mounted on the cover.

[0018] Preferably, the cover includes a base plate, and the light source and the airflow controller are both mounted on the base plate.

[0019] Furthermore, the present invention also provides an airflow control method, based on the above-mentioned airflow control lamp, wherein the airflow control lamp dissipates heat through the airflow control method, and the airflow control method specifically includes the following steps:

[0020] S1. When the airflow control lamp is working, the light source and the driving power supply generate heat energy, which heats the gas inside the airflow control lamp, reduces the pressure, and forms a pressure difference with the air outside the airflow control lamp.

[0021] S2. A portion of the air outside the airflow-controlled lamp enters the airflow controller from the airflow inlet under the action of the air pressure difference; another portion of the air moves along the outside of the cover to the heat dissipation fins.

[0022] S3. The air entering the airflow controller moves along the extension direction of the airflow inlet channel to the airflow guide. The airflow direction is changed by the obstruction of the airflow guide. During this movement, the air exchanges heat with the interior of the airflow control lamp. The air flowing to the heat dissipation fins exchanges heat with the heat dissipation fins and carries away the heat on the outer wall of the airflow controller.

[0023] S4. The air inside the airflow controller is moved by the airflow guide to the airflow outlet, thereby being discharged from the airflow control lamp.

[0024] Based on the above technical solution, the technical effects achieved by the present invention are as follows:

[0025] (1) Excellent heat dissipation and low impact from environmental factors. The airflow control system and airflow-controlled luminaire of this invention realize the circulation and heat exchange of internal and external air through an airflow controller. The principle is to use the pressure difference between the air inside and outside the luminaire to allow external cold air to enter from the side and pass through the airflow controller. During this process, heat exchange occurs, and the air is then discharged from the airflow control system due to the obstruction of the baffle. Therefore, the heat dissipation effect of this controlled airflow is poorly correlated with the ventilation conditions of the environment and the high degree of influence of the airflow controller, and is less affected by environmental factors, achieving good heat dissipation effect in different environments. At the same time, the cold air makes full contact with the interior of the luminaire when passing through it, improving the heat dissipation effect.

[0026] (2) Simple structure, compact construction, and reduced production cost. The airflow controller of the present invention achieves heat dissipation by controlling the airflow across the lamp body. Therefore, the height of the airflow controller is not the main factor affecting the heat dissipation effect. Compared with the heat sink with a long heat dissipation channel by increasing the contact area with air, the airflow controller of the present invention has the characteristics of simple structure and can reduce production cost, making the airflow controlled lamp more compact and more exquisite in appearance. Attached Figure Description

[0027] Figure 1 This is an exploded schematic diagram of the airflow control system of the present invention.

[0028] Figure 2 This is a schematic diagram of the airflow controller of the present invention.

[0029] Figure 3 This is a schematic diagram of the airflow direction of the airflow control lamp of the present invention.

[0030] Figure 4 This is an assembly diagram of an airflow control lamp according to another embodiment of the present invention.

[0031] Figure 5 This is a schematic flowchart of the airflow control method of the present invention.

[0032] Figure label:

[0033] 100 Airflow control system, 200 Airflow control lamp, 101 First airflow channel, 102 Second airflow channel, 1 Top shell, 111 Bottom wall, 112 Side wall, 113 Airflow outlet, 114 Outlet groove, 2 Airflow controller, 21 Airflow inlet, 211 Airflow control plate, 212 Airflow inlet channel, 22 Airflow guide, 221 Baffle, 222 Heat dissipation fins, 223 Airflow cavity, 224 Airflow groove, 3 Cover, 31 Base plate, 4 Drive power supply, 5 Light source component. Detailed Implementation

[0034] To facilitate understanding of the present invention, a more comprehensive description will be given below in conjunction with the accompanying drawings and specific embodiments. The drawings illustrate preferred embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0035] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0036] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0037] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying 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 this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0038] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

[0039] Example 1

[0040] Figure 1 and Figure 2 Exploded view of the airflow control system 100 and structural diagram of the airflow controller of this embodiment are given respectively, in conjunction with reference. Figures 1 to 2 An airflow control system 100 includes a top shell 1, an airflow controller 2, and a cover 3. The airflow control system 100 uses air pressure difference to guide external cold air into the airflow control system 100 and exhausts it after heat exchange, thereby achieving the function of heat dissipation.

[0041] Specifically, the top shell 1 is installed at the upper end of the airflow controller 2, and the cover 3 is installed at the lower end of the airflow controller 2. The airflow controller 2 includes an airflow inlet 21 and an airflow guide 22. In this embodiment, the airflow inlet 21 and the airflow guide 22 have a semi-circular arc structure, and are connected to form an overall circular structure for the airflow controller 2. The airflow inlet 21 is circumferentially provided with multiple airflow control plates 211, forming an airflow inlet channel 212 between each pair of airflow control plates 211. The airflow control plates 211 extend radially along the airflow controller 2, that is, they are radially distributed from the center of the airflow controller 2, making the airflow inlet channel 212 wider at the outside and narrower at the inside. When external air flows through the airflow inlet channel 212, the flow velocity increases due to the gradually decreasing width of the airflow inlet channel 212, thereby increasing the volume of air in contact with the airflow control system 100 per unit time and accelerating heat exchange efficiency.

[0042] The airflow guide section 22 includes a baffle 221 connected to the airflow inlet section 21. The baffle 221 has an arc-shaped structure and forms a semi-enclosed structure with the airflow control plate 211 to the airflow controller 2. An airflow cavity 223 is formed on the inner edge of the baffle 221 and the airflow control plate 211. External air enters the airflow cavity 223 through the airflow inlet channel 212 between the airflow control plates 211, and then changes its airflow direction due to the obstruction of the baffle 221, moving towards the top shell 1, thereby achieving control of the airflow direction. It should be noted that in some embodiments, the airflow guide section 22 and the airflow inlet section 21 may also be arc-shaped structures with unequal arc lengths, and the proportion of the airflow guide section 22 and the airflow inlet section 21 on the airflow controller 2 can be adjusted according to requirements.

[0043] Furthermore, the top shell 1 is provided with an airflow outlet 113. The top shell 1 is a cylindrical shell adapted to the structure of the airflow controller 2, including a bottom wall 111 and a side wall 112 connected to the bottom wall 111. In this embodiment, the airflow outlet 113 is located on the side of the top shell 1 opposite to the airflow inlet 21, and directly above the airflow guide 22, thus facilitating the rapid outflow of airflow after it is blocked by the airflow guide 22, accelerating the airflow speed. The airflow outlet 113 is provided with multiple outlet grooves 114 for outflowing airflow. The airflow outlet grooves 114 extend from the bottom wall 111 to the side wall 112, forming an overall "L"-shaped structure. The portion of the outlet groove 114 located in the top shell 1 is connected to the interior of the lamp body 1, thereby realizing the outflow of gas from inside the airflow-controlled lamp. Of course, this does not impose specific limitations on the location and shape of the outlet groove 114. In some embodiments, the outlet groove 114 is only located at the bottom wall 111 of the top shell 1, and in some embodiments, the outlet groove 114 is in the shape of a circular hole and is distributed on the top shell 1. In addition, the relative positions of the airflow outlet 113, the airflow inlet 21, and the airflow guide 22 are not unique.

[0044] When in use, the airflow control system 100 utilizes the pressure difference between the inside and outside of the system to allow external cold air to enter the airflow controller 2 through the airflow inlet 21. The airflow inlet channel 212 guides the air from the side of the airflow controller 2 into the airflow chamber 223 within it, where it continues to move along the extension direction of the airflow inlet channel 212 until it encounters the airflow guide 22, changing its direction and finally exiting through the airflow outlet 113 at the top shell 1. This method of controlling airflow for heat dissipation is unaffected by environmental ventilation conditions or the height of the airflow controller 2, achieving good heat dissipation even in poorly ventilated environments. Furthermore, the airflow controller 2 has a simple and compact structure, resulting in lower production costs.

[0045] It should be noted that during the process of air flowing from the airflow inlet 21 to the airflow guide 22, the air traverses the entire airflow controller 2, thus increasing the contact area between the airflow controller 2 and the air, making the heat exchange between the airflow controller 2 and the cold air more complete, and accelerating the heat dissipation efficiency of the lamp.

[0046] Therefore, the airflow inlet 21, airflow guide 22, and airflow outlet 113 form a first airflow control unit. The first airflow control unit uses the air pressure difference to allow external cold air to enter the airflow control system 100, and then pass through the airflow inlet channel 212, airflow chamber 223, and outlet slot 114 in sequence. During this process, the air exchanges heat with the airflow controller 2, thereby carrying away the heat from the airflow controller 2 and playing a role in heat dissipation.

[0047] In addition, the airflow control system 100 also includes a second airflow control unit. In the airflow controller 2, multiple heat dissipation fins 222 are spaced apart on the outer peripheral wall of the baffle 221. Airflow grooves 224 are formed between the heat dissipation fins 222. The outer edges of the heat dissipation fins 222 and the outer edges of the airflow control plate 211 form a complete circle. External cold air flows along the outer peripheral wall of the cover 3 and passes through the airflow grooves 224. The heat dissipation fins 222 have a blocky structure, thus having a large contact area with the air. The gas carries away heat from the outer peripheral wall of the airflow controller 2 through heat exchange. Therefore, the cover 3 and the heat dissipation fins 222 form the second airflow control unit.

[0048] In summary, the airflow control system 100 provided in this embodiment utilizes air pressure difference to allow external cold air to enter the airflow controller 2, where it undergoes heat exchange and is then discharged from the airflow outlet 113 of the top shell 1. Simultaneously, the flow of cold air between the heat dissipation fins 222 on the outer periphery of the cover 3 and the airflow controller 2 further removes heat from the interior and outer walls of the airflow control system 100, significantly improving its heat dissipation efficiency and effect. It should be further noted that this airflow control system 100 can be applied to various types of lighting fixtures, demonstrating its versatility.

[0049] Example 2

[0050] Figure 3 A schematic diagram of the airflow direction of the airflow-controlled lamp 200 in this embodiment is provided, in conjunction with reference. Figures 1 to 3 This embodiment provides an airflow-controlled lighting fixture 200, taking a ceiling light as an example. The airflow-controlled lighting fixture 200 includes a driving power supply 4, a light source 5, and the airflow control system 100 of Embodiment 1. The driving power supply 4 is installed inside the top shell 1 and confined between the top shell 1 and the airflow controller 2. The light source 5 is installed on the cover 3. The cover 3 also includes a base plate 31, on which both the light source 5 and the airflow controller 2 are installed.

[0051] During operation, the light source 5 converts electrical energy into light energy for illumination, and a portion of it is converted into heat energy. Similarly, the driving power supply 4 also generates some heat energy. This heat energy heats the air inside the airflow control lamp 200, reducing its pressure and creating a pressure difference with the outside air. At this time, the cold outside air enters the airflow controller 2 from the airflow inlet 21 under the influence of the pressure difference. The airflow inlet channel 212 guides the air to enter the airflow chamber 223 inside the airflow controller 2 from the side, and continues to move along the extension direction of the airflow inlet channel 212 in the airflow chamber 223 until it encounters the airflow guide 22 and changes its airflow direction, finally exiting from the outlet slot 114 on the top shell 1. Therefore, the airflow inlet channel 212, the airflow chamber 223, and the outlet slot 114 form the first airflow channel 101.

[0052] During this process, since the light source 5 and the airflow controller 2 are both installed on the base plate 31 of the cover 3, and the driving power supply 4 is installed on the upper end of the airflow controller 2, the gas can approach the heat-generating electronic devices, namely the light source 5 and the driving power supply 4, in time during the flow of the airflow controller 2, and carry away the heat, thereby further enhancing the heat dissipation effect.

[0053] In addition, some cold air flows along the outer peripheral wall of the cover 3 and passes through the airflow grooves 224 between the heat dissipation fins 211. Preferably, the heat dissipation fins 211 are block structures with a large surface area, and the heat dissipation fins 211 are made of metal, thereby increasing the contact area between the air and the heat dissipation fins and increasing the heat conduction efficiency. The air flows through the cover 3 and the airflow controller 2 and carries away the heat on the outer peripheral wall of the airflow-controlled lamp 200 through heat exchange. Therefore, the cover 3 and the heat dissipation fins 222 form a second airflow control part, and the outer side of the cover 3 and the airflow grooves 224 form a second airflow channel 102.

[0054] Example 3

[0055] Figure 4 An assembly diagram of the airflow control lamp 200 of this embodiment is provided, as follows: Figure 4 As shown, the airflow control lamp 200 provided in this embodiment includes a top shell 1, an airflow controller 2, a cover 3, and a light source 5. Figure 4 (Not marked in the text). The airflow controller 2 includes an airflow inlet 21 and an airflow guide 22, and the lamp body 1 has an airflow outlet 113. This airflow-controlled lamp 200 utilizes air pressure difference to allow external cold air to enter the airflow controller 2 from the airflow inlet 21. As the airflow passes through the airflow controller 2, it makes full contact with the interior of the airflow-controlled lamp 200 and exchanges heat. When the airflow encounters the airflow guide 22, it changes direction and is discharged from the airflow outlet 113 of the lamp body 1.

[0056] The difference between this embodiment and Embodiment 2 is that the lamp body 1 has two airflow outlets 113. One airflow outlet 113 is located on the side of the top shell 1 opposite to the airflow inlet 21, and directly above the airflow guide 22. The other airflow outlet 113 is located directly above the airflow inlet 21. Each airflow outlet 113 has multiple outlet grooves 114 spaced apart. The outlet grooves 114 extend from the bottom wall 111 to the side wall 112, forming an overall "L"-shaped structure. The portion of the outlet groove 114 located in the top shell 1 communicates with the interior of the lamp body 1, thereby enabling the exhaust of gas from inside the airflow-controlled lamp 200.

[0057] Example 4

[0058] This embodiment provides an airflow control method. Figure 5 A flowchart of an airflow control method is provided. This airflow control method is based on the airflow control lamp 200 provided in Embodiment 2, and is referenced in conjunction with... Figure 1 , Figure 2 , Figure 3 and Figure 5 The airflow control method specifically includes the following steps:

[0059] First, when the airflow control lamp 200 is working, the light source 5 and the driving power supply 4 convert part of the electrical energy into heat energy, which heats up the gas inside the airflow control lamp 200, reduces the pressure, and creates a pressure difference with the air outside the airflow control lamp 200.

[0060] Next, air from outside the airflow-controlled lamp 200 enters the airflow controller 2 from the airflow inlet under the action of air pressure difference. At the same time, some air moves along the outside of the cover 3 to the heat dissipation fins 222. Then, the air entering the airflow controller 2 moves along the extension direction of the airflow inlet channel 212 to the airflow guide 22, and changes its airflow direction due to the obstruction of the airflow guide 22. During this movement, the air exchanges heat with the interior of the airflow-controlled lamp 200. The air entering the airflow slots 224 between the heat dissipation fins 222 exchanges heat with the heat dissipation fins 222, carrying away the heat from the outer peripheral wall of the airflow controller 2.

[0061] Finally, the air inside the airflow controller 2 is moved by the airflow guide 22 to the airflow outlet 21, and is thus discharged from the airflow control lamp 200. The air outside the airflow controller 2 flows through the airflow groove 224 and continues to flow along the outer wall of the top shell 1.

[0062] The above description is merely an example and illustration of the structure of this invention, and while the description is specific and detailed, it should not be construed as limiting the scope of this invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this invention, and these obvious substitutions all fall within the protection scope of this invention.

Claims

1. An airflow control system, characterized by, The air flow control system comprises a top shell, an air flow controller and a cover body, the top shell is connected with the cover body through the air flow controller, the air flow controller comprises an air flow inlet part and an air flow guide part, the air flow inlet part is connected with the air flow guide part; The air flow inlet part is provided with a plurality of air flow control pieces, and an air flow inlet channel is formed between the air flow control pieces; The air flow guide part is provided with a blocking edge for blocking air flow, the top shell is provided with an air flow outlet part, and the air flow inlet part, the air flow guide part and the air flow outlet part form a first air flow control part; A plurality of heat dissipation fins are circumferentially arranged outside the blocking edge, and the cover body and the heat dissipation fins form a second air flow control part; The air flow control pieces are circumferentially arranged on the air flow inlet part, and the air flow control pieces extend along the radial direction of the air flow controller, and the air flow inlet channel forms a structure with an outer width and an inner narrowness; The air flow outlet part is provided with a plurality of outlet grooves for guiding air flow; The blocking edge and the inner side of the air flow control piece form an air flow cavity, and the air flow inlet channel, the air flow cavity and the outlet groove form a first air flow channel; Air flow grooves are formed between the heat dissipation fins, and the outer side of the cover body and the air flow grooves form a second air flow channel.

2. The airflow control system of claim 1, wherein, The air flow outlet part is arranged on the top shell, and the air flow outlet part is different from the air flow inlet part.

3. The airflow control system of claim 1, wherein, The top shell comprises a bottom wall and a side wall, and the outlet groove extends from the bottom wall to the side wall.

4. An airflow control luminaire, characterized by, The air flow control system comprises a driving power supply, a light source and the air flow control system according to any one of claims 1-3, the driving power supply is fixed between the top shell and the air flow controller, and the light source is mounted on the cover body.

5. The airflow control luminaire of claim 4, wherein, The cover body comprises a bottom plate, and the light source and the air flow controller are mounted on the bottom plate.

6. A method of airflow control based on the airflow control luminaire of claim 4, wherein, The air flow control lamp is cooled by the air flow control method, and the air flow control method specifically comprises the following steps: S1. When the air flow control lamp works, the light source and the driving power supply generate heat energy, the gas inside the air flow control lamp is heated, the pressure is reduced, and the air pressure difference is formed between the air inside the air flow control lamp and the air outside the air flow control lamp; S2. Part of the air outside the air flow control lamp enters the air flow controller from the air flow inlet part under the action of the air pressure difference, and another part of the air moves along the outer side of the cover body to the heat dissipation fins; S3. The air entering the air flow controller moves to the air flow guide part along the extension direction of the air flow inlet channel, the air flow direction is changed under the blocking of the air flow guide part, and the air exchanges heat with the inside of the air flow control lamp in the moving process; the air flowing to the heat dissipation fins exchanges heat with the heat dissipation fins, and the heat on the outer side wall of the air flow controller is taken away; S4. The air inside the air flow controller is moved to the air flow outlet part by the air flow guide part, so as to be guided out of the air flow control lamp.

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