Air duct flow guide structure of high-beam and low-beam module efficient heat dissipation system with fan

Abstract

The utility model provides an air duct diversion structure of a high-efficiency heat dissipation system with a fan for a high-beam and low-beam module, the heat dissipation system comprises a radiator assembly, an LED heat source assembly, a reflective bowl, an outer lens and a fan, the radiator assembly comprises a mounting substrate and a plurality of first heat dissipation fins; the first heat dissipation fins are evenly distributed at one end of the installation substrate at intervals and located above the LED heat source assembly, the other end of the installation substrate extends outwards to be connected with the outer lens, one end of the light reflection bowl is connected with the lower portion of the LED heat source assembly, and the other end of the light reflection bowl extends outwards to be connected with the outer lens. The air duct structure and the radiator assembly are integrally formed, the multiple flow deflectors are arranged on the radiator assembly on the inner side of the air duct structure, and air blown out of the fan is gathered through the air duct structure and then diffused through the multiple flow deflectors, so that the wind power is large when the air reaches a heat source, and the radiating efficiency is high.

Description

Technical Field

[0001] The utility model relates to the technical field of heat dissipation systems, and more specifically, to an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam module. Background Art

[0002] Adaptive Driving Beam (ADB) is an intelligent anti-glare high beam system. When targets such as vehicles and pedestrians appear on the road surface, a control system composed of sensors and drive circuits will automatically adjust the high beam lighting zones, thereby avoiding dazzling the illuminated targets and ensuring clear high beam lighting during driving. The ADB module has advantages such as good light pattern uniformity, fewer module numbers, and beautiful appearance in the application of vehicle lamp assemblies.

[0003] With the popularization of LED headlamps, the application of ADB modules in vehicle lamps is also increasing. Only 20% of the input power of LEDs can be converted into light energy, and the rest of the energy is converted into heat energy. If this heat energy cannot be dissipated in time, it will cause the junction temperature of the LED chips to rise, thereby affecting the performance and lifespan of the chips. Usually, the number of LEDs in the ADB module is relatively large and the placement spacing is small, resulting in too concentrated heat. If the heat dissipation efficiency of the system is not high, it will restrict the performance of the LEDs.

[0004] In the prior art, such as an automotive lamp heat dissipation structure with the publication number CN209977927U and an adaptive high beam lamp with the publication number CN221324226U, the fan only acts on the heat dissipation fins of the radiator, and the strongest convection area is far from the hottest point, resulting in low heat dissipation efficiency; there is no air duct diversion design at the fan air outlet, and the convection will quickly spread, so that the air volume and air pressure when reaching the bottom of the heat dissipation fins are very small, and the heat dissipation efficiency of the flow field is low. Summary of the Utility Model

[0005] In view of this, in order to solve the above problems, the present utility model proposes an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam module. The heat dissipation system includes a radiator assembly 1, an LED heat source assembly 2, a reflector bowl 4, an outer lens 4, and a fan 5. The outer lens 4 is provided at one end of the radiator assembly 1, the fan 5 is provided at the other end of the radiator assembly 1, the LED heat source assembly 2 is provided at the bottom of the radiator assembly 1, the reflector bowl 4 is provided below the LED heat source assembly 2, the radiator assembly 1 includes a mounting substrate 11 and a plurality of heat dissipation fins 12. The heat dissipation fins 12 are evenly spaced and distributed at one end of the mounting substrate 11 and are located above the LED heat source assembly 2. The other end of the mounting substrate 11 extends outward to be connected to the outer lens 4. One end of the reflector bowl 4 is connected to the lower part of the LED heat source assembly 2, and the other end extends outward to be connected to the outer lens 4. An air duct structure 14 is provided at one end of the radiator assembly 1 close to the fan 5. The air duct structure 14 is integrally formed with the radiator assembly 1. A plurality of guide vanes 13 are provided on the radiator assembly 1 inside the air duct structure 14. The air blown out by the fan 5 is gathered through the air duct structure 14 and then diffused through the plurality of guide vanes 13, so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high.

[0006] An air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam module. The heat dissipation system includes a radiator assembly 1, an LED heat source assembly 2, a reflector bowl 4, an outer lens 4, and a fan 5. The outer lens 4 is provided at one end of the radiator assembly 1, the fan 5 is provided at the other end of the radiator assembly 1, the LED heat source assembly 2 is provided at the bottom of the radiator assembly 1, the reflector bowl 4 is provided below the LED heat source assembly 2, the radiator assembly 1 includes a mounting substrate 11 and a plurality of heat dissipation fins 12. The heat dissipation fins 12 are evenly spaced and distributed at one end of the mounting substrate 11 and are located above the LED heat source assembly 2. The other end of the mounting substrate 11 extends outward to be connected to the outer lens 4. One end of the reflector bowl 4 is connected to the lower part of the LED heat source assembly 2, and the other end extends outward to be connected to the outer lens 4. It is characterized in that: an air duct structure 14 is provided at one end of the radiator assembly 1 close to the fan 5. The air duct structure 14 is integrally formed with the radiator assembly 1. A plurality of guide vanes 13 are provided on the radiator assembly 1 inside the air duct structure 14. The air blown out by the fan 5 is gathered through the air duct structure 14 and then diffused through the plurality of guide vanes 13, so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high.

[0007] Further, the air duct structure 14 includes an air duct frame 141 and a connecting frame 143. The air duct frame 141 and the connecting frame 143 are integrally formed. The air duct frame 141 is a hollow ring shape. Mounting holes 142 are provided on the air duct frame 141. The fan 5 is detachably connected to the air duct frame 141 through the mounting holes 142. The outer edge of the air duct frame 141 is larger than the outer edge of the fan 5, so that the air duct frame 141 will not limit the air volume and wind force after the fan 5 blows air.

[0008] Furthermore, one end of the connecting frame 143 is disposed on the mounting substrate 11, and the other end is connected to the outer edge of the air duct frame 141. The centers of the air duct structure 14, the fan 5, and the LED heat source assembly 2 are all located on the same straight line, so that the main convection regions after the fan 5 discharges air are evenly distributed on the upper and lower sides of the LED heat source assembly 2, effectively restricting the convection diffusion of the air outlet of the fan 5 to the ineffective region, concentrating the convection and blowing it towards the heat dissipation fins 12, the LED heat source assembly 2, and the reflector bowl 3, thereby improving the convection heat dissipation efficiency of the fan 5.

[0009] Furthermore, the plurality of flow guiding vanes 13 are disposed above the mounting substrate 11 and at the air outlet of the air duct structure 14. The flow guiding vanes 13 are arranged in a scattered manner towards the heat dissipation fins 12 for expanding the convection range of the fan 5.

[0010] Furthermore, the heat dissipation fins 12 are evenly distributed above the LED heat source assembly 2, and the included angle between the flow guiding vanes 13 and the heat dissipation fins 12 is 5° to 60°.

[0011] Furthermore, the distance between the flow guiding vanes 13 is 3 to 6 mm.

[0012] Furthermore, a partition region 15 is provided between the flow guiding vanes 13 and the heat dissipation fins 12. Due to the Bernoulli effect that the greater the flow velocity, the smaller the pressure, convection is generated in the two side edge regions of the radiator assembly 1, strengthening the convection range of the entire system and improving the heat dissipation efficiency.

[0013] Furthermore, the LED heat source assembly 2 includes a PCBA board, and LED heat sources are arranged on the PCBA board. The temperature of the LED heat sources decreases from the middle to both sides.

[0014] Furthermore, one end of the reflector bowl 3 is connected to the bottom of the LED heat source assembly 2, and the other end is connected to the bottom of the radiator assembly 1. The reflector bowl 3 adopts a parabolic curved surface design for reducing the light loss of light concentration.

[0015] Advantages of the present utility model: The present utility model provides an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module. The heat dissipation system includes a radiator assembly 1, an LED heat source assembly 2, a reflector bowl 4, an outer lens 4, and a fan 5. The outer lens 4 is provided at one end of the radiator assembly 1, the fan 5 is provided at the other end of the radiator assembly 1, the LED heat source assembly 2 is provided at the bottom of the radiator assembly 1, the reflector bowl 4 is provided below the LED heat source assembly 2, the radiator assembly 1 includes a mounting substrate 11 and a plurality of heat dissipation fins 12, the heat dissipation fins 12 are evenly spaced and distributed at one end of the mounting substrate 11 and above the LED heat source assembly 2, the other end of the mounting substrate 11 extends outward and is connected to the outer lens 4, one end of the reflector bowl 4 is connected below the LED heat source assembly 2, and the other end extends outward and is connected to the outer lens 4. An air duct structure 14 is provided at one end of the radiator assembly 1 close to the fan 5, and the air duct structure 14 is integrally formed with the radiator assembly 1. A plurality of flow guiding vanes 13 are provided on the radiator assembly 1 inside the air duct structure 14. The air blown out by the fan 5 is gathered through the air duct structure 14 and then diffused through the plurality of flow guiding vanes 13, so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high. Description of the Drawings

[0016] Figure 1 It is a plan view of an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module of the present utility model.

[0017] Figure 2 It is an exploded view of an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module of the present utility model.

[0018] Figure 3 It is a fan-removed structure diagram of an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module of the present utility model.

[0019] Main Component Symbol Description

[0020] Radiator assembly 1, mounting substrate 11, heat dissipation fins 12, flow guiding vanes 13, air duct structure 14, air duct frame 141, mounting holes 142, connecting frame 143, partition area 15, LED heat source assembly 2, reflector bowl 3, outer lens 4, fan 5.

[0021] The following specific embodiments will further illustrate the present utility model in conjunction with the above-mentioned drawings. Specific Embodiments

[0022] As Figure 1 shown, it is a plan view of an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module of the present utility model; as Figure 2 shown, it is an exploded view of an air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam light module of the present utility model; asFigure 3 As shown, it is a fan-removed structure diagram of the air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module of the present utility model. Embodiment 1:

[0023] An air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module. The heat dissipation system includes a radiator assembly 1, an LED heat source assembly 2, a reflector bowl 4, an outer lens 4, and a fan 5. The outer lens 4 is provided at one end of the radiator assembly 1, the fan 5 is provided at the other end of the radiator assembly 1, the LED heat source assembly 2 is provided at the bottom of the radiator assembly 1, the reflector bowl 4 is provided below the LED heat source assembly 2, the radiator assembly 1 includes a mounting substrate 11 and a plurality of heat dissipation fins 12. The heat dissipation fins 12 are evenly spaced and distributed at one end of the mounting substrate 11 and are located above the LED heat source assembly 2. The other end of the mounting substrate 11 extends outward and is connected to the outer lens 4. One end of the reflector bowl 4 is connected below the LED heat source assembly 2, and the other end extends outward and is connected to the outer lens 4. One end of the radiator assembly 1 close to the fan 5 is provided with an air duct structure 14, and the air duct structure 14 is integrally formed with the radiator assembly 1. A plurality of guide vanes 13 are provided on the radiator assembly 1 inside the air duct structure 14. After the air blown out by the fan 5 is gathered through the air duct structure 14, it is then diffused through the plurality of guide vanes 13, so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high.

[0024] The air duct structure 14 includes an air duct frame 141 and a connection frame 143, and the air duct frame 141 and the connection frame 143 are integrally formed. The air duct frame 141 is a hollow ring, and mounting holes 142 are provided on the air duct frame 141. The fan 5 is detachably connected to the air duct frame 141 through the mounting holes 142. The outer edge of the air duct frame 141 is larger than the outer edge of the fan 5, so that the air duct frame 141 will not restrict the air volume and wind force after the fan 5 blows air.

[0025] One end of the connection frame 143 is provided on the mounting substrate 11, and the other end is connected to the outer edge of the air duct frame 141. The centers of the air duct structure 14, the fan 5, and the LED heat source assembly 2 are all located on the same straight line, so that the main convection regions after the fan 5 blows air are evenly distributed on the upper and lower sides of the LED heat source assembly 2, effectively restricting the convection diffusion of the fan 5 outlet to the ineffective region, and concentrating the convection to blow towards the heat dissipation fins 12, the LED heat source assembly 2, and the reflector bowl 3, improving the convection heat dissipation efficiency of the fan 5.

[0026] The plurality of guide vanes 13 are provided above the mounting substrate 11 and are located at the air outlet of the air duct structure 14. The guide vanes 13 are arranged in a scattered manner towards the heat dissipation fins 12 for expanding the convection range of the fan 5.

[0027] The heat dissipation fins 12 are evenly distributed above the LED heat source assembly 2, and the included angle between the flow guide fins 13 and the heat dissipation fins 12 is 5° to 60°.

[0028] As shown in Table 1, which is the simulation relationship diagram of the spacing of the flow guide fins 14 and the LED junction temperature. When other factors remain unchanged, when the spacing of the flow guide fins 14 is 2 mm, the LED junction temperature is 135 °C; when the spacing of the flow guide fins 14 is 5 mm, the LED junction temperature is 130 °C; when the spacing of the flow guide fins 14 is 7 mm, the LED junction temperature is 140 °C. Thus, it can be seen that the heat dissipation efficiency is high when the spacing of the flow guide fins is 5 mm.

[0029] Table 1

[0030]

[0031] A partition area 15 is provided between the flow guide fins 13 and the heat dissipation fins 12. Due to the Bernoulli effect, the greater the flow velocity in the partition area 15, the smaller the pressure, which causes convection in the edge areas on both sides of the radiator assembly 1, strengthens the convection range of the entire system, and improves the heat dissipation efficiency.

[0032] The LED heat source assembly 2 includes a PCBA board, and LED heat sources are arranged on the PCBA board. The temperature of the LED heat sources decreases from the middle to both sides.

[0033] One end of the reflector bowl 3 is connected to the bottom of the LED heat source assembly 2, and the other end is connected to the bottom of the radiator assembly 1. The reflector bowl 3 adopts a parabolic curved surface design to reduce the loss of condensed light.

[0034] The beneficial effects of the present utility model: The present utility model provides an air duct diversion structure for an efficient heat dissipation system of a high and low beam module with a fan. The heat dissipation system includes a radiator assembly 1, an LED heat source assembly 2, a reflector bowl 4, an outer lens 4, and a fan 5. The outer lens 4 is provided at one end of the radiator assembly 1, the fan 5 is provided at the other end of the radiator assembly 1, the LED heat source assembly 2 is provided at the bottom of the radiator assembly 1, the reflector bowl 4 is provided below the LED heat source assembly 2, the radiator assembly 1 includes a mounting substrate 11 and a plurality of heat dissipation fins 12. The heat dissipation fins 12 are evenly spaced and distributed at one end of the mounting substrate 11 and above the LED heat source assembly 2. The other end of the mounting substrate 11 extends outward and is connected to the outer lens 4. One end of the reflector bowl 4 is connected below the LED heat source assembly 2, and the other end extends outward and is connected to the outer lens 4. A duct structure 14 is provided at one end of the radiator assembly 1 close to the fan 5. The duct structure 14 is integrally formed with the radiator assembly 1. A plurality of flow guide fins 13 are provided on the radiator assembly 1 inside the duct structure 14. The air blown out by the fan 5 is gathered through the duct structure 14 and then diffused through the plurality of flow guide fins 13, so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high.

[0035] The above-described embodiments merely represent several implementation manners of the present utility model. The description thereof is relatively specific and detailed, but it should not be construed as a limitation to the scope of the patent of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several variations and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the patent of the present utility model shall be subject to the appended claims.

Claims

1. An air duct diversion structure for an efficient heat dissipation system of a fan-equipped high and low beam module. The heat dissipation system includes a radiator assembly (1), an LED heat source assembly (2), a reflector bowl (3), an outer lens (4), and a fan (5). The outer lens (4) is provided at one end of the radiator assembly (1), the fan (5) is provided at the other end of the radiator assembly (1), the LED heat source assembly (2) is provided at the bottom of the radiator assembly (1), the reflector bowl (3) is provided below the LED heat source assembly (2), the radiator assembly (1) includes a mounting substrate (11) and a plurality of heat dissipation fins (12). The heat dissipation fins (12) are evenly spaced and distributed at one end of the mounting substrate (11) and are located above the LED heat source assembly (2). The other end of the mounting substrate (11) extends outward and is connected to the outer lens (4). One end of the reflector bowl (3) is connected below the LED heat source assembly (2), and the other end extends outward and is connected to the outer lens (4). It is characterized in that: One end of the radiator assembly (1) close to the fan (5) is provided with an air duct structure (14). The air duct structure (14) is integrally formed with the radiator assembly (1). A plurality of guide vanes (13) are provided on the radiator assembly (1) inside the air duct structure (14). The air blown out by the fan (5) is gathered through the air duct structure (14) and then diffused through the plurality of guide vanes (13), so that the wind force is large when reaching the heat source and the heat dissipation efficiency is high.

2. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module according to claim 1, characterized in that: The air duct structure (14) includes an air duct frame (141) and a connecting frame (143). The air duct frame (141) and the connecting frame (143) are integrally formed. The air duct frame (141) is a hollow ring shape. Mounting holes (142) are provided on the air duct frame (141). The fan (5) is detachably connected to the air duct frame (141) through the mounting holes (142). The outer edge of the air duct frame (141) is larger than the outer edge of the fan (5).

3. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module according to claim 2, wherein: One end of the connecting frame (143) is provided on the mounting substrate (11), and the other end is connected to the outer edge of the air duct frame (141). The centers of the air duct structure (14), the fan (5), and the LED heat source assembly (2) are all located on the same straight line, so that the main convection regions after the fan (5) blows out air are evenly distributed on the upper and lower sides of the LED heat source assembly (2), effectively restricting the convection diffusion of the fan (5) outlet to the ineffective region, and concentrating the convection to blow towards the heat dissipation fins (12), the LED heat source assembly (2), and the reflector bowl (3).

4. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module according to claim 1, characterized in that: The plurality of guide vanes (13) are provided above the mounting substrate (11) and at the air outlet of the air duct structure (14). The guide vanes (13) are arranged in a scattered manner towards the heat dissipation fins (12).

5. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module according to claim 1, wherein: The heat dissipation fins (12) are evenly distributed above the LED heat source assembly (2). The included angle between the guide vanes (13) and the heat dissipation fins (12) is 5° to 60°.

6. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module as claimed in claim 1, wherein: The distance between the guide vanes (13) is 3 to 6 mm.

7. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module as described in claim 1, characterized in that: A partition area (15) is provided between the guide vanes (13) and the heat dissipation fins (12).

8. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module as described in claim 1, characterized in that: The LED heat source assembly (2) includes a PCBA board. LED heat sources are arranged on the PCBA board. The temperature of the LED heat sources decreases from the middle to both sides.

9. The air duct diversion structure of an efficient heat dissipation system for a fan-equipped high and low beam module according to claim 1, characterized in that: One end of the reflector bowl (3) is connected to the bottom of the LED heat source assembly (2), and the other end is connected to the bottom of the radiator assembly (1). The reflector bowl (3) adopts a parabolic curved surface design.

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