Matrix type car lamp grille LED module

Abstract

The utility model relates to the technical field of car light, concretely is a kind of matrix car light grille LED module, including shell, LED light source substrate being arranged on shell and the LED light of matrix distribution being installed on LED light source substrate, the back of LED light source substrate is fixedly bonded with heat-conducting silica gel layer and the back of LED light source substrate is provided with radiating fin, radiating fin is set through heat-conducting silica gel layer and keeps contact with heat-conducting silica gel layer, the top of shell is provided with the ventilation and heat dissipation air duct of two ends opening, ventilation and heat dissipation air duct are communicated with the inner chamber of shell and are separated by shunt baffle being arranged in the bottom of ventilation and heat dissipation air duct, shunt baffle is provided with shunt guide hole, and the open port of the both ends of ventilation and heat dissipation air duct is provided with dustproof door of rotation installation on ventilation and heat dissipation air duct, the utility model can avoid that the heat dissipation structure is directly exposed in airflow, reduce the corrosion caused by airflow direct contact heat dissipation structure to heat dissipation structure, prolong the service life of heat dissipation structure.

Description

Technical Field

[0001] This utility model relates to the field of automotive lighting technology, specifically a matrix-type automotive lighting grille LED module. Background Technology

[0002] Matrix LED modules in the automotive grille area typically employ an exposed heat dissipation structure to utilize airflow for cooling. However, during vehicle operation, the heat dissipation structure is exposed to rain, dust, and high humidity environments for extended periods, which can lead to severe corrosion risks for traditional heat dissipation systems. For instance, aluminum alloy heat sink fins are prone to pitting corrosion in salt spray environments, resulting in decreased thermal conductivity. PM10 particles in the air accumulate in the gaps between the heat sink fins, forming an insulation layer that increases thermal resistance and reduces the heat dissipation effect. Furthermore, the temperature difference between day and night can cause condensation to seep into the heat dissipation structure, leading to corrosion of the heat sink fins.

[0003] In the prior art, some automotive lighting devices spray an epoxy resin anti-corrosion layer on the surface of the radiator, but the coating thickness >50μm will significantly hinder heat conduction; in addition, some automotive lighting devices use a closed air duct behind the grille to solve the corrosion problem, but the heat dissipation efficiency decreases due to the extended airflow path. None of these devices can meet the requirements of efficient heat dissipation and long-term anti-corrosion. Therefore, we provide a matrix-type automotive lighting grille LED module to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this invention is to provide a matrix-type LED module for vehicle headlights and grilles to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A matrix-style automotive headlight grille LED module includes a housing, an LED light source substrate mounted on the housing, and matrix-distributed LED lights mounted on the LED light source substrate. A thermally conductive silicone layer is fixedly bonded to the back of the LED light source substrate, and heat dissipation fins are provided on the back of the LED light source substrate. The heat dissipation fins penetrate the thermally conductive silicone layer and maintain contact with the thermally conductive silicone layer. A ventilation and heat dissipation duct with openings at both ends is provided on the top of the housing. The ventilation and heat dissipation duct is connected to the inner cavity of the housing and separated by a flow divider plate provided at the bottom of the ventilation and heat dissipation duct. The flow divider plate has flow guide holes. Dustproof protective doors that are rotatably mounted on the ventilation and heat dissipation duct are provided at the openings at both ends of the ventilation and heat dissipation duct.

[0006] As described above, a matrix-type automotive headlight grille LED module has the LED light source substrate disposed on the front of the housing, while the thermally conductive silicone layer and heat dissipation fins fixed on its back are located within the inner cavity of the housing.

[0007] As described above, a matrix-type automotive headlight grille LED module has multiple heat dissipation fins, which are evenly distributed on the back of the LED light source substrate.

[0008] As described above, a matrix-type automotive headlight grille LED module has multiple diversion guide holes, multiple diversion baffles are evenly distributed on the diversion baffles, and a filter screen is fixedly installed inside each diversion guide hole.

[0009] As described above, a matrix-type LED module for vehicle headlights and grilles includes drive rods rotatably mounted on the ventilation and heat dissipation duct at both ends of the ventilation and heat dissipation duct. A dustproof door is mounted on the drive rods, and a micro motor is mounted on the ventilation and heat dissipation duct. The drive rods are mounted on the output end of the micro motor and are driven to rotate by the micro motor.

[0010] As described above, a matrix-type LED module for vehicle headlights and grilles includes a temperature sensor fixedly installed on the inner wall of the ventilation and heat dissipation duct, a controller fixedly installed on the outer wall of the ventilation and heat dissipation duct, and a micro motor and temperature sensor connected to the controller via wires.

[0011] As described above, in a matrix-type LED module for vehicle headlights and grilles: rectangular sealing rings with inner contour dimensions that match the outer contour dimensions of the dustproof and protective door are fixedly adhered to the inner walls of the openings at both ends of the ventilation and heat dissipation duct.

[0012] Compared with the prior art, the beneficial effects of this utility model are: In use, the back of the LED light source substrate is equipped with a thermally conductive silicone layer and heat dissipation fins. The thermally conductive silicone layer directly absorbs the heat generated by the LED light source substrate when the LED is turned on. The thermally conductive silicone layer contacts the heat dissipation fins, transferring the heat to the fins. Multiple heat dissipation fins increase the heat dissipation area for rapid heat dissipation. A ventilation and heat dissipation duct with openings at both ends is provided at the top of the housing. The ventilation and heat dissipation duct is connected to the inner cavity of the housing and separated by a diversion baffle at the bottom of the ventilation and heat dissipation duct. The diversion baffle has diversion guide holes. The heat emitted by the heat dissipation fins enters the housing. Utilizing the principle that hot air rises and cold air sinks, the heat will enter the ventilation and heat dissipation duct through the diversion guide holes. The ventilation and heat dissipation duct has dustproof protective doors that are rotatably mounted on the duct at both ends of the opening. When the LED light is turned on and heat dissipation is required for the LED light source substrate, the dustproof protective doors rotate to a horizontal position, allowing air convection to form at both ends of the ventilation and heat dissipation duct, which quickly carries away the heat accumulated inside the ventilation and heat dissipation duct. The cool air then descends into the housing through the diversion guide holes to cool the LED light source substrate, thus achieving the purpose of heat dissipation for the LED light source substrate. In addition, when the LED light source substrate is not turned on, the dustproof protective doors rotate to a vertical position, forming a closed state between the ventilation and heat dissipation duct and the housing, reducing the entry of external moisture and dust into the housing and causing corrosion to the internal heat dissipation structure.

[0013] Therefore, this utility model adds a ventilation and heat dissipation duct to the top of the housing, and uses the airflow in the ventilation and heat dissipation duct to remove the heat inside the housing. This avoids the heat dissipation structure being directly exposed to the airflow, reducing the corrosion caused by the airflow directly contacting the heat dissipation structure. At the same time, the ventilation and heat dissipation duct is equipped with rotating dustproof protective doors at both ends, which can control the opening and closing of the ventilation and heat dissipation duct ports. When the LED light is not turned on and heat dissipation is not required, the inside of the housing can be sealed, thereby reducing the corrosion and damage to the heat dissipation structure caused by rainwater and dust entering the housing cavity when the LED light is not working, and extending the service life of the heat dissipation structure. Attached Figure Description

[0014] Figure 1 This is a first-view schematic diagram of the overall structure of a matrix-style LED headlight grille module.

[0015] Figure 2 This is a schematic diagram of the overall structure of a matrix-style LED headlight grille module from a second perspective.

[0016] Figure 3 A matrix-style LED module for vehicle headlights and grilles Figure 1 A schematic diagram of the decomposed part of the structure.

[0017] Figure 4 A matrix-style LED module for vehicle headlights and grilles Figure 1A schematic diagram of the other part of the structure after decomposition.

[0018] Figure 5 A matrix-style LED module for vehicle headlights and grilles Figure 4 A schematic diagram of the structure after the shell is partially truncated.

[0019] Figure 6 A matrix-style LED module for vehicle headlights and grilles Figure 5 A partial structural diagram.

[0020] In the diagram: 1. Housing; 2. LED light source substrate; 3. LED lamp; 4. Thermally conductive silicone layer; 5. Heat dissipation fins; 6. Ventilation and heat dissipation duct; 7. Diversion baffle; 8. Diversion guide hole; 9. Dustproof protective door; 10. Drive rod; 11. Micro motor; 12. Temperature sensor; 13. Controller; 14. Filter screen. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Please see Figures 1-6 As an embodiment of this utility model, a matrix-type vehicle headlight grille LED module includes a housing 1, an LED light source substrate 2 disposed on the housing 1, and matrix-distributed LED lights 3 mounted on the LED light source substrate 2. A thermally conductive silicone layer 4 is fixedly bonded to the back of the LED light source substrate 2, and heat dissipation fins 5 are disposed on the back of the LED light source substrate 2. The heat dissipation fins 5 penetrate through the thermally conductive silicone layer 4 and are kept in contact with the thermally conductive silicone layer 4. A ventilation and heat dissipation duct 6 with openings at both ends is disposed at the top of the housing 1. The ventilation and heat dissipation duct 6 is connected to the inner cavity of the housing 1 and is separated by a diversion baffle 7 disposed at the bottom of the ventilation and heat dissipation duct 6. A diversion guide hole 8 is provided on the diversion baffle 7. Dustproof protective doors 9 are rotatably mounted on the ventilation and heat dissipation duct 6 at the openings at both ends of the ventilation and heat dissipation duct 6.

[0023] In this embodiment, during use, the LED light source substrate 2 is electrically connected to the car power supply via wires. When the LED light 3 is turned on, the LED light source substrate 2 generates heat. A thermally conductive silicone layer 4 and heat dissipation fins 5 are provided on the back of the LED light source substrate 2. The thermally conductive silicone layer 4 directly absorbs the heat generated by the LED light source substrate 2 when the LED light 3 is turned on. The thermally conductive silicone layer 4 contacts the heat dissipation fins 5, transferring heat to them. Multiple heat dissipation fins 5 increase the heat dissipation area for rapid heat dissipation. A ventilation and heat dissipation duct 6 with openings at both ends is provided at the top of the housing 1. The ventilation and heat dissipation duct 6 is connected to the inner cavity of the housing 1 and separated by a flow divider 7 at the bottom of the ventilation and heat dissipation duct 6. The flow divider 7 has flow guide holes 8. The heat emitted by the heat dissipation fins 5 first enters the interior of the housing 1 and accumulates. Utilizing the principle of hot air rising and cold air sinking, the heat is dissipated through… The air enters the ventilation and heat dissipation duct 6 through the diversion hole 8 and then accumulates inside. Dustproof protective doors 9 are installed at the openings at both ends of the ventilation and heat dissipation duct 6. When the LED light 3 is turned on and heat dissipation of the LED light source substrate 2 is required, the dustproof protective doors 9 are rotated to a horizontal position, so that air convection is formed at both ends of the ventilation and heat dissipation duct 6 to quickly remove the heat accumulated inside the ventilation and heat dissipation duct 6. The cold air then sinks into the housing 1 through the diversion hole 8 to cool the LED light source substrate 2, including the thermally conductive silicone layer 4 and the heat dissipation fins 5, thus achieving the purpose of heat dissipation of the LED light source substrate 2 and the LED light 3. In addition, when the LED light 3 is not turned on, the dustproof protective doors 9 are rotated to a vertical position, so that the ventilation and heat dissipation duct 6 and the housing 1 are sealed, reducing the entry of external moisture and dust into the housing 1 and causing corrosion to the internal heat dissipation structure.

[0024] As a further embodiment of this utility model, the LED light source substrate 2 is disposed on the front side of the housing 1, and the thermally conductive silicone layer 4 and heat dissipation fins 5 fixed on its back side are both located in the inner cavity of the housing 1.

[0025] In this embodiment, when the LED light source substrate 2 is turned on, the heat is transferred to the housing 1. The heat generated by the housing 1 and the LED light source substrate 2 during operation can be transferred to the thermally conductive silicone layer 4 and the heat dissipation fins 5. The heat is dissipated into the housing 1 for collection through the heat dissipation fins 5.

[0026] As a further embodiment of this utility model, the number of heat dissipation fins 5 is set to multiple, and the multiple heat dissipation fins 5 are distributed at equal intervals on the back side of the LED light source substrate 2.

[0027] In this embodiment, multiple heat dissipation fins 5 are evenly distributed on the back of the LED light source substrate 2. The heat dissipation fins 5 are in contact with the thermally conductive silicone layer 4 to fully absorb the heat of the thermally conductive silicone layer 4. The heat dissipation area of ​​the heat dissipation fins 5 is increased by the multiple heat dissipation fins 5, and the absorbed heat is dissipated by itself.

[0028] As a further embodiment of this utility model, the number of diversion guide holes 8 is set to multiple, and multiple diversion baffles 7 are evenly distributed on the diversion baffles 7, and a filter screen 14 is fixedly installed inside the diversion guide holes 8.

[0029] In this embodiment, utilizing the principle of hot air rising and cold air falling, the heat inside the housing 1 will enter the ventilation and heat dissipation duct 6 through the diversion hole 8 and accumulate there. A filter screen 14 is fixedly installed inside the diversion hole 8. When convection is formed inside the ventilation and heat dissipation duct 6, the cold air will sink into the housing 1 through the diversion hole 8 to cool the LED light source substrate 2. The filter screen 14 filters the dust in the sinking air, reducing the amount of dust particles entering the housing 1.

[0030] As a further embodiment of this utility model, drive rods 10 are rotatably mounted on the ventilation and heat dissipation duct 6 at both ends of the ventilation and heat dissipation duct 6, dustproof and protective doors 9 are mounted on the drive rods 10, and micro motors 11 are mounted on the ventilation and heat dissipation duct 6. The drive rods 10 are mounted on the output end of the micro motors 11 and are driven to rotate by the micro motors 11.

[0031] In this embodiment, the micro motor 11 is electrically connected to the car power supply through a wire. Starting the micro motor 11 can drive the drive rod 10 to rotate and cause the dustproof door 9 to automatically flip, thereby achieving the purpose of automatically controlling the flipping of the dustproof door 9.

[0032] As a further embodiment of this utility model, a temperature sensor 12 is fixedly installed on the inner wall of the ventilation and heat dissipation duct 6, and a controller 13 is fixedly installed on the outer wall of the ventilation and heat dissipation duct 6. The micro motor 11 and the temperature sensor 12 are electrically connected to the controller 13 through wires.

[0033] In this embodiment, the temperature sensor 12 can detect the internal temperature of the ventilation and heat dissipation duct 6 in real time and transmit the signal to the controller 13. When the internal temperature of the ventilation and heat dissipation duct 6 is too high, the controller 13 controls the micro motor 11 to start and drive the dustproof door 9 to automatically flip, opening the openings at both ends of the ventilation and heat dissipation duct 6 to dissipate heat inside the ventilation and heat dissipation duct 6. When the internal temperature of the ventilation and heat dissipation duct 6 is normal, the controller 13 controls the micro motor 11 to start and drive the dustproof door 9 to automatically flip, closing the openings at both ends of the ventilation and heat dissipation duct 6 to seal the inside of the ventilation and heat dissipation duct 6 and reduce the probability of external moisture and dust entering.

[0034] As a further embodiment of this utility model, rectangular sealing rings with inner contour dimensions that match the outer contour dimensions of the dustproof and protective door 9 are fixedly adhered to the inner walls of the openings at both ends of the ventilation and heat dissipation duct 6.

[0035] In this embodiment, rectangular sealing rings with inner contour dimensions that match the outer contour dimensions of the dustproof door 9 are fixedly adhered to the inner walls of the openings at both ends of the ventilation and heat dissipation duct 6. When the dustproof door 9 is flipped to the vertical position, the sealing rings can seal the gap between the dustproof door 9 and the ventilation and heat dissipation duct 6, thereby improving the sealing effect inside the ventilation and heat dissipation duct 6.

[0036] In use, the LED light source substrate 2 is electrically connected to the car power supply via wires. When the LED light 3 is turned on, the LED light source substrate 2 generates heat. A thermally conductive silicone layer 4 and heat dissipation fins 5 are provided on the back of the LED light source substrate 2. The thermally conductive silicone layer 4 directly absorbs the heat transferred to the LED light source substrate 2 when the LED light 3 is turned on, as well as the heat generated by the LED light source substrate 2. The thermally conductive silicone layer 4 contacts the heat dissipation fins 5, transferring heat to them. Multiple heat dissipation fins 5 increase the heat dissipation area for rapid heat dissipation. The heat dissipated by the heat dissipation fins 5 first enters the housing 1 and accumulates. Utilizing the principle of hot air rising and cold air sinking, the heat will then enter the ventilation and heat dissipation duct 6 through the diversion holes 8 for further accumulation. Rotary mounting brackets are provided at both ends of the ventilation and heat dissipation duct 6. The dustproof door 9 installed on the ventilation and heat dissipation duct 6 allows for the rotation of the dustproof door 9 to a horizontal position when the LED light 3 is turned on and heat dissipation of the LED light source substrate 2 is required. This enables air convection at both ends of the ventilation and heat dissipation duct 6, allowing airflow to quickly remove the heat accumulated inside the ventilation and heat dissipation duct 6. Meanwhile, the cool air descends into the housing 1 through the diversion guide hole 8 to cool the LED light source substrate 2, including the thermally conductive silicone layer 4 and the heat dissipation fins 5, thus achieving the purpose of heat dissipation for the LED light source substrate 2 and the LED light 3. In addition, when the LED light 3 is not turned on, the dustproof door 9 rotates to a vertical position, creating a closed state between the ventilation and heat dissipation duct 6 and the housing 1, reducing the entry of external moisture and dust into the housing 1 and causing corrosion to the internal heat dissipation structure.

[0037] The above embodiments are exemplary and not restrictive. Therefore, without departing from the spirit or basic characteristics of this utility model, any technical solutions that can be implemented in other specific forms are included in this utility model.

Claims

1. A matrix type car lamp grille LED module, comprising a shell (1), an LED light source substrate (2) arranged on the shell (1), and a matrix type distributed LED lamp (3) mounted on the LED light source substrate (2), characterized in that, The back of the LED light source substrate (2) is fixedly bonded with a thermally conductive silicone layer (4), and a heat dissipation fin (5) is provided on the back of the LED light source substrate (2). The heat dissipation fin (5) is provided through the thermally conductive silicone layer (4) and is kept in contact with the thermally conductive silicone layer (4). The top of the housing (1) is provided with a ventilation and heat dissipation duct (6) with openings at both ends. The ventilation and heat dissipation duct (6) is connected to the inner cavity of the housing (1) and is separated by a diversion partition (7) provided at the bottom of the ventilation and heat dissipation duct (6). A diversion guide hole (8) is provided on the diversion partition (7). Dustproof protective doors (9) are provided at the openings at both ends of the ventilation and heat dissipation duct (6) and are rotatably mounted on the ventilation and heat dissipation duct (6).

2. The matrix lamp grille LED module according to claim 1, characterized in that, The LED light source substrate (2) is disposed on the front of the housing (1), and the thermally conductive silicone layer (4) and heat dissipation fins (5) fixed on its back are located in the inner cavity of the housing (1).

3. The matrix vehicle lamp grid LED module of claim 1, wherein, The number of heat dissipation fins (5) is set to multiple, and the multiple heat dissipation fins (5) are distributed at equal intervals on the back of the LED light source substrate (2).

4. The matrix lamp grille LED module according to claim 1, characterized in that, The number of diversion guide holes (8) is set to multiple, and multiple diversion baffles (7) are distributed at equal intervals on the diversion baffles (7). A filter screen (14) is fixedly installed inside the diversion guide holes (8).

5. The matrix vehicle lamp grid LED module of claim 1, wherein, The ventilation and heat dissipation duct (6) has a drive rod (10) rotatably mounted on the ventilation and heat dissipation duct (6) at both ends of the opening. The dustproof door (9) is mounted on the drive rod (10). The ventilation and heat dissipation duct (6) is equipped with a micro motor (11). The drive rod (10) is mounted on the output end of the micro motor (11) and is driven to rotate by the micro motor (11).

6. The matrix vehicle lamp grid LED module of claim 5, wherein, A temperature sensor (12) is fixedly installed on the inner wall of the ventilation and heat dissipation duct (6), and a controller (13) is fixedly installed on the outer wall of the ventilation and heat dissipation duct (6). The micro motor (11) and the temperature sensor (12) are electrically connected to the controller (13) through wires.

7. The matrix vehicle lamp grid LED module of claim 1, wherein, The inner walls of the openings at both ends of the ventilation and heat dissipation duct (6) are fixedly bonded with rectangular sealing rings whose inner contour dimensions match the outer contour dimensions of the dustproof and protective door (9).

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