Led vehicle lamp with dry structure

Abstract

The utility model relates to LED car light with drying structure, including shell body, the inner lamp shade of through support installation in the shell body, fixed mounting the heat dissipation cover of shell body bottom, the upper end of inner lamp shade extends to the outside of shell body, and the top of shell body inside installs first dust screen, the inside of inner lamp shade is provided with LED light source, and the top of inner lamp shade is provided with light transmission lens, the inside of heat dissipation cover is fixedly installed with heat dissipation fan through support, and the inside of heat dissipation cover is located the top of heat dissipation fan and is provided with second dust screen, the surface fixed mounting of inner lamp shade outside has heat conduction piece, and the bottom of inner lamp shade is provided with drying channel subassembly, the utility model discloses through the first airflow channel of shell body and inner lamp shade formation and the second airflow channel of inner lamp shade inside constitute double circulation system, cooperate waterproof air permeable membrane in air inlet through -hole, can ensure the heat dissipation airflow circulation while blocking the invasion of external humidity, effectively solve the problem of line board damp damage.

Description

Technical Field

[0001] This utility model relates to the field of LED vehicle lighting technology, specifically to an LED vehicle lighting system with a drying structure. Background Technology

[0002] LED automotive lights are components that provide illumination for vehicles. They efficiently convert electrical energy into light energy through the injection-type light-emitting principle of a semiconductor PN junction. Their core structure consists of an LED chip, a reflector ring, and electrode wires. The band gap of the PN junction determines the color of the emitted light and the energy efficiency. Compared to traditional halogen lamps and xenon headlights, LED automotive lights have revolutionary advantages. However, existing LED car lights may become damp inside during use, which can damage the circuit board and affect the normal operation of the light. Based on this, we propose an LED car light with a drying structure to solve the above problems. Utility Model Content

[0003] To address the shortcomings of existing technologies, this utility model provides an LED vehicle light with a drying structure. It adopts a dual airflow channel, which ensures both heat dissipation and internal dryness, preventing components from being damaged by moisture. This solves the problem that existing LED vehicle lights may become damp inside during use, leading to damage to the circuit board and affecting the normal operation of the light.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an LED vehicle lamp with a drying structure, comprising an outer shell, an inner lamp cover mounted inside the outer shell via a bracket, and a heat sink fixedly mounted at the bottom of the outer shell. The upper end of the inner lamp cover extends to the outer side of the outer shell, and a first dustproof net is installed on the top of the inner side of the outer shell. An LED light source is provided on the inner side of the inner lamp cover, and a light-transmitting mirror is provided on the top of the inner lamp cover. A cooling fan is fixedly mounted on the inner side of the heat sink via a bracket, and a second dustproof net is provided on the inner side of the heat sink above the cooling fan. A heat-conducting sheet is fixedly mounted on the outer surface of the inner lamp cover, and a drying channel assembly is provided at the bottom of the inner lamp cover.

[0005] Furthermore, a first airflow channel is formed between the outer casing and the inner lamp cover. The first dustproof net is adapted to the first airflow channel. Air enters the first airflow channel from the top of the outer casing. A humidity sensor is provided on the outer surface of the outer casing to sense the external air humidity.

[0006] Furthermore, the outer diameter of the heat sink is larger than the outer diameter of the outer shell. The cooling fan is used to drive the airflow. The air enters from the top of the first airflow channel and is discharged outward through the heat sink to remove heat.

[0007] Furthermore, the LED light source is fixedly mounted on the inner wall of the inner lamp cover via a circuit board. An air inlet hole is provided on the inner wall of the inner lamp cover, and a waterproof and breathable membrane is installed in the air inlet hole.

[0008] Furthermore, the drying channel assembly includes a tapered tube fixedly installed at the bottom of the inner lamp cover and a duckbill valve disposed on the tapered tube. The tapered tube and the inner side of the inner lamp cover form a second airflow channel. Air enters the second airflow channel from the air inlet and exits from the air outlet at the bottom of the tapered tube.

[0009] Furthermore, temperature sensors are installed in both the first and second airflow channels to sense the temperature in the first and second airflow channels.

[0010] Furthermore, the heat-conducting plates are arranged in a ring array and are used to conduct heat to the first airflow channel.

[0011] Compared with the prior art, the technical solution of this application has the following beneficial effects: 1. This LED vehicle light with a drying structure forms a dual circulation system through a first airflow channel formed by the outer shell and the inner lamp cover, and a second airflow channel on the inner side of the inner lamp cover. Combined with the waterproof and breathable membrane in the air intake hole, it can ensure the flow of heat dissipation airflow while blocking the intrusion of external moisture, effectively solving the problem of circuit board damage due to moisture.

[0012] 2. This LED vehicle light with a drying structure utilizes a ring-shaped array of heat-conducting sheets and a cooling fan to form forced convection cooling. Combined with real-time monitoring by a dual-airflow-channel temperature sensor, it achieves directional heat conduction and intelligent temperature control.

[0013] 3. This LED headlight with a drying structure, through the coordinated design of a humidity sensor and a duckbill valve, closes the valve when the external humidity is high, allowing heat dissipation through the external airflow channel to prevent moisture from entering. At the same time, combined with a temperature sensor, when the temperature is high in the second airflow channel, high pressure is formed, which opens the valve to facilitate the exhaust of internal air, achieving efficient heat dissipation. Attached Figure Description

[0014] Figure 1 The diagram shown is a half-sectional view of the present invention. Figure 2 The diagram shown is a schematic representation of the overall structure of this utility model. Figure 3 The diagram shown is a cross-sectional view of the present invention. Figure 4 The diagram shown is a schematic of the inner lampshade structure of this utility model; Figure 5 The diagram shown is a schematic of the heat sink structure of this utility model.

[0015] Explanation of reference numerals in the attached drawings: 1. Outer shell; 2. Inner lamp cover; 201. Air inlet; 21. Conical tube; 3. Heat sink; 4. First dustproof mesh; 5. LED light source; 6. Transparent mirror; 7. Cooling fan; 8. Second dustproof mesh; 9. Heat-conducting plate. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-5 The LED vehicle light with a drying structure in this embodiment includes a housing 1, an inner lamp cover 2 mounted inside the housing 1 by a bracket, and a heat sink 3 fixedly mounted at the bottom of the housing 1. The upper end of the inner lamp cover 2 extends to the outside of the housing 1, and a first dustproof net 4 is installed on the top of the inner side of the housing 1. An LED light source 5 is provided on the inner side of the inner lamp cover 2, and a light-transmitting mirror 6 is provided on the top of the inner lamp cover 2. A cooling fan 7 is fixedly mounted on the inner side of the heat sink 3 by a bracket, and a second dustproof net 8 is provided on the inner side of the heat sink 3 above the cooling fan 7. A heat-conducting sheet 9 is fixedly mounted on the outer surface of the inner lamp cover 2, and a drying channel assembly is provided at the bottom of the inner lamp cover 2. The heat-conducting sheets 9 are arranged in a ring array and are used to conduct heat to the first airflow channel.

[0018] In this embodiment, a first airflow channel is formed between the outer shell 1 and the inner lampshade 2. The first dustproof net 4 is adapted to the first airflow channel. Air enters the first airflow channel from the top of the outer shell 1. A humidity sensor is provided on the outer surface of the outer shell 1 to sense the external air humidity.

[0019] It should be noted that the detection threshold of the humidity sensor can be preset by the control system. When the external air humidity is high, heat dissipation is achieved through the adaptation of the cooling fan 7 and the first airflow channel, while external air cannot enter the inner lamp cover 2 to avoid moisture.

[0020] Please see Figure 1 , Figure 3 and Figure 4 In this embodiment, the outer diameter of the heat sink 3 is larger than the outer diameter of the outer shell 1. The heat dissipation fan 7 is used to drive the airflow. The air enters from the top of the first airflow channel and is discharged outward through the heat sink 3 to remove heat.

[0021] It should be noted that the cooling fan 7 adopts a stepless speed regulation design, and its speed can be dynamically adjusted according to the real-time data of the temperature sensor in the first airflow channel (the speed increases by 20% for every 5°C increase in temperature), with a maximum speed of 3000r / min, ensuring a balance between heat dissipation efficiency and energy consumption.

[0022] Please see Figure 1 , Figure 3 In this embodiment, the LED light source 5 is fixedly installed on the inner wall of the inner lamp cover 2 via a circuit board. An air inlet hole 201 is provided on the inner wall of the inner lamp cover 2, and a waterproof and breathable membrane is provided in the air inlet hole 201.

[0023] In this embodiment, the drying channel assembly includes a tapered tube 21 fixedly installed at the bottom of the inner lamp cover 2 and a duckbill valve disposed on the tapered tube 21. The tapered tube 21 and the inner side of the inner lamp cover 2 form a second airflow channel. Air enters the second airflow channel from the air inlet 201 and is discharged from the bottom air outlet of the tapered tube 21. Temperature sensors are provided in both the first airflow channel and the second airflow channel. The two temperature sensors are used to sense the temperature in the first airflow channel and the second airflow channel.

[0024] It should be noted that the duckbill valve is made of fluororubber and has one-way conduction characteristics, which can effectively prevent external humid air from flowing back through the second airflow channel. At the same time, the inner wall of the conical tube 21 is coated with a 0.5mm thick silica gel desiccant to perform secondary drying treatment on the airflow. When the second airflow channel is open, a waterproof and breathable membrane is used to block moisture.

[0025] The working principle of the above embodiments is as follows: First, after the LED light source 5 is turned on, the circuit board on the inner wall of the inner lamp cover 2 generates heat, and some of the heat is conducted to the first airflow channel through the heat conduction sheet 9. At the same time, the cooling fan 7 is turned on, forming a negative pressure between the outer shell 1 and the inner lamp cover 2. After the external air is filtered by the first dustproof net 4, it enters the first airflow channel, takes away the heat transferred by the heat conduction sheet 9 and is discharged from the heat dissipation cover 3, thus achieving primary heat dissipation.

[0026] Secondly, the humidity sensor detects the external air humidity. When the humidity is high, the second airflow channel closes. The temperature sensor senses the internal temperature of the inner cover 2. However, when the temperature is too high, high pressure is formed in the second airflow channel, thereby opening the bottom conical tube 21. Air enters the second airflow channel through the air inlet 201 (waterproof and breathable membrane blocks liquid water). After fully contacting the desiccant coating in the conical tube 21, it is discharged unidirectionally through the duckbill valve, so that the inside of the inner lamp cover maintains a slightly positive pressure dry environment.

[0027] Finally, the temperature sensor in the dual airflow channel monitors the temperature difference in real time, and the system automatically increases the speed of the cooling fan 7 and extends the running time of the drying channel components until the temperature difference returns to the safe range of <10℃.

[0028] It should be noted that the control method of this utility model is controlled by a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming. The power supply is also common knowledge in the field. Furthermore, this utility model is mainly used to protect mechanical devices, so the control method and circuit connection will not be explained in detail here.

[0029] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An LED vehicle lamp with a drying structure, comprising a housing (1), an inner lamp cover (2) mounted inside the housing (1) via a bracket, and a heat sink (3) fixedly mounted on the bottom of the housing (1), characterized in that: The upper end of the inner lamp cover (2) extends to the outside of the outer shell (1), and a first dustproof net (4) is installed on the top of the inner side of the outer shell (1). An LED light source (5) is provided on the inner side of the inner lamp cover (2), and a light-transmitting mirror (6) is provided on the top of the inner lamp cover (2). A heat dissipation fan (7) is fixedly installed on the inner side of the heat dissipation cover (3) by a bracket, and a second dustproof net (8) is provided on the inner side of the heat dissipation cover (3) above the heat dissipation fan (7). A heat-conducting sheet (9) is fixedly installed on the outer surface of the inner lamp cover (2), and a drying channel assembly is provided at the bottom of the inner lamp cover (2).

2. The LED vehicle lamp with a drying structure according to claim 1, characterized in that: A first airflow channel is formed between the outer shell (1) and the inner lamp cover (2). The first dustproof net (4) is adapted to the first airflow channel. Air enters the first airflow channel from the top of the outer shell (1). A humidity sensor is provided on the outer surface of the outer shell (1). The humidity sensor is used to sense the external air humidity.

3. The LED vehicle lamp with a drying structure according to claim 2, characterized in that: The outer diameter of the heat sink (3) is larger than the outer diameter of the outer shell (1). The heat sink fan (7) is used to drive the airflow. The air enters from the top of the first airflow channel and is discharged outward through the heat sink (3) to remove heat.

4. The LED vehicle lamp with a drying structure according to claim 1, characterized in that: The LED light source (5) is fixedly installed on the inner wall of the inner lamp cover (2) via a circuit board. An air inlet hole (201) is provided on the inner wall of the inner lamp cover (2), and a waterproof and breathable membrane is provided in the air inlet hole (201).

5. The LED vehicle lamp with a drying structure according to claim 2, characterized in that: The drying channel assembly includes a tapered tube (21) fixedly installed at the bottom of the inner lamp cover (2) and a duckbill valve set on the tapered tube (21). The tapered tube (21) and the inner side of the inner lamp cover (2) form a second airflow channel. Air enters the second airflow channel from the air inlet (201) and is discharged from the bottom air outlet of the tapered tube (21).

6. The LED vehicle lamp with a drying structure according to claim 5, characterized in that: Temperature sensors are installed in both the first and second airflow channels to sense the temperature in the first and second airflow channels.

7. The LED vehicle lamp with a drying structure according to claim 2, characterized in that: The heat-conducting plates (9) are arranged in a ring array and are used to conduct heat to the first airflow channel.

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