LED car lamp

Abstract

The utility model relates to the technical field of vehicle lamps, in particular to an LED vehicle lamp which comprises a heat dissipation base with heat dissipation fins arranged on the outer wall and an LED light source substrate arranged on the heat dissipation base in an up-down clamping mode, and the front end of the heat dissipation base extends forwards to form an LED lamp post body communicated with the interior of the heat dissipation base. A fixing part for placing an LED light source substrate is horizontally arranged in the LED lamp post body, first openings for light sources of the LED light source substrate to penetrate out are formed in the upper portion and the lower portion of the front end of the LED lamp post body respectively, communicated grooves are formed in the left end and the right end of the LED lamp post body and the left end and the right end of the fixing part respectively, the front end and the rear end of each groove are closed, and the grooves are filled with heat dissipation condensate. According to the LED light source, through the design of the groove filled with the heat dissipation condensate, an efficient heat-conducting uniform-temperature circulation body can be formed around the LED light source substrate, the heat of the light source is rapidly conducted to the heat dissipation body at the rear end, it is guaranteed that the LED light source can work stably in the high-temperature environment, and the service life of the LED light source is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to an LED vehicle lamp. Background Art

[0002] With the rapid progress of the automobile industry and the increasing requirements of consumers for the performance of car lights, LED technology has become the preferred solution for automotive lighting systems due to its high energy efficiency, ultra-long life and excellent lighting effects. At present, LED lights have been widely integrated into many key parts of automobiles, such as headlights, turn signals, fog lights and taillights.

[0003] However, LED headlights generate a lot of heat during operation. If the heat dissipation system is not efficient enough, the temperature of the LED chip will rise, which will have an adverse effect on its luminous efficiency and service life. Currently, common LED headlight heat dissipation designs rely on aluminum heat dissipation substrates or additional heat dissipation fins to achieve effective heat dissipation of the LED light source. For example, an efficient heat dissipation LED headlight with patent number CN202323488322.9 adopts this method.

[0004] However, in actual applications, the size of traditional LED headlights is generally small, which directly limits the heat dissipation area of ​​the LED headlight heat dissipation base, making the heat dissipation effect unsatisfactory and difficult to meet the increasingly stringent heat dissipation requirements. Summary of the invention

[0005] The utility model aims to solve the shortcomings of the prior art LED car lights, such as unsatisfactory heat dissipation effect and difficulty in meeting heat dissipation requirements, and proposes an LED car light.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An LED vehicle lamp is designed, comprising a heat sink 1 with heat sink fins 11 on the outer wall, an LED lamp column 12 extending forward from the front end of the heat sink 1 and penetrating the interior of the heat sink 1, a fixing piece 13 is horizontally arranged inside the LED lamp column 12, an LED light source substrate 2 is clamped between the fixing piece 13 and the upper and lower parts, a first opening 14 is respectively opened at the upper and lower parts of the front end of the LED lamp column 12 for the light source of the LED light source substrate 2 to pass through, a communicating groove 3 is respectively arranged inside the LED lamp column 12 and the left and right ends of the fixing piece 13, the front and rear ends of the groove 3 are closed, and the groove 3 is filled with heat dissipation condensate.

[0008] Furthermore, a fan fixing part 4 protruding inward is fixed to the lower end of the heat dissipation base 1 , a fan assembly 5 is arranged inside the fan fixing part 4 , and slots 41 penetrating the inside of the heat dissipation base 1 are arranged around the top of the fan fixing part 4 .

[0009] Furthermore, a first heat dissipation gap 15 penetrating the interior of the heat dissipation base 1 is provided between adjacent heat dissipation fins 11 .

[0010] Furthermore, a second opening 16 is provided at the lower end of the heat dissipation base 1 for the pin terminal 6 to pass through, and an adapter plate 7 electrically connected to the LED light source substrate 2 is connected to the pin terminal 6. A second heat dissipation gap 17 that passes through the interior of the heat dissipation base 1 is provided between the adapter plate 7 and the heat dissipation base 1, and the second heat dissipation gap 17 is connected to the second opening 16.

[0011] Furthermore, the heat dissipation base 1 , the LED lamp column body 12 and the fixing member 13 are an integrated or split structure formed by die-casting or extrusion molding of heat dissipation aluminum material or heat dissipation copper material.

[0012] Furthermore, the inner wall of the groove 3 is designed to have a sawtooth structure.

[0013] Furthermore, the left and right ends of the first opening 14 are flush with the height of the LED light source substrate 2 disposed on the fixing member 13 .

[0014] Furthermore, the LED lamp column body 12 is sleeved with an annular buckle 8 which is fixedly connected to the headlight assembly.

[0015] The LED car lamp proposed by the utility model has the following beneficial effects:

[0016] In the present invention, a relatively stable temperature environment can be formed around the LED light source substrate by designing a groove filled with heat dissipation condensate, thereby reducing the impact of temperature fluctuations on the LED light source;

[0017] Secondly, in the present invention, the heat dissipation base, heat dissipation fins, LED lamp column, fixings and heat dissipation condensate work together to form an efficient heat dissipation system, which can greatly improve the heat dissipation efficiency of the LED car lights and ensure that the LED light source can work stably in a high temperature environment, thereby extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an LED car light proposed by the utility model;

[0019] Figure 2 for Figure 1 A schematic diagram of an exploded structure of an LED headlight is shown;

[0020] Figure 3 for Figure 1 A schematic diagram of the side structure of an LED vehicle lamp is shown;

[0021] Figure 4 for Figure 3 The structural cross-sectional view at point A shown;

[0022] Figure 5 This is a schematic diagram of the structure of another LED car light proposed by the utility model;

[0023] Figure 6 for Figure 5 A schematic diagram of an exploded structure of an LED headlight is shown;

[0024] Figure 7 for Figure 5 A schematic diagram of the side structure of an LED vehicle lamp is shown;

[0025] Figure 8 for Figure 7 The structural cross-sectional view at point B is shown.

[0026] In the figure: 1. heat dissipation base; 11. heat dissipation fins; 12. LED lamp column body; 13. fixing member; 14. first opening; 15. first heat dissipation gap; 16. second opening; 17. second heat dissipation gap; 2. LED light source substrate; 3. groove; 4. fan fixing member; 41. slot; 5. fan assembly; 6. pin terminal; 7. adapter plate; 8. ring buckle. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0028] Reference Figure 1-8An LED vehicle lamp includes a heat sink 1 with heat sink fins 11 on the outer wall, an LED lamp column 12 extending forward from the front end of the heat sink 1 and penetrating the interior of the heat sink 1, a fixing part 13 is horizontally arranged inside the LED lamp column 12, and an LED light source substrate 2 is clamped on the upper and lower parts of the fixing part 13. The LED light source substrate 2 is a key component for generating light, and clamping it on the fixing part 13 can ensure that the LED light source is in close contact with the heat dissipation system, which is conducive to the rapid conduction of heat. At the same time, this clamping method also simplifies the assembly process, while ensuring the directness and efficiency of the heat conduction path, and reducing the thermal resistance compared to the connection method through thermal conductive glue or other media. And the LED lamp column 12 serves as the output channel of the LED light source. The design of the present application can effectively take into account both the lighting effect and the heat dissipation performance. At the same time, the fixing part 13 can also be used to stably fix the LED light source substrate 2 to prevent it from shifting or vibrating during use. The front end of the LED lamp column body 12 is provided with first openings 14 for the LED light source substrate 2 to pass through, respectively. The first opening 14 allows the light generated by the LED light source substrate 2 to penetrate the LED lamp column body 12 to achieve the lighting function. At the same time, the design of the opening also needs to consider the heat dissipation performance to ensure that the heat will not be retained in the lamp column body too much due to the opening being too large. The left and right ends of the LED lamp column body 12 and the fixing member 13 are respectively provided with interconnected grooves 3, the front and rear ends of the grooves 3 are closed, and the grooves 3 are filled with heat dissipation condensate. The design of the grooves 3 can provide a closed space for the heat dissipation condensate, which is conducive to the evaporation and absorption of heat by the heat dissipation condensate when heated. During the evaporation and condensation process, the heat dissipation condensate can effectively take away the heat generated by the LED light source and dissipate it into the air through the heat dissipation fins 11.

[0029] In the utility model, the present application can form a relatively stable temperature environment around the LED light source substrate 2 through the design of the groove 3 filled with heat dissipation condensate, thereby reducing the impact of temperature fluctuations on the LED light source. At the same time, through the synergistic effect of structures such as the heat dissipation fins 11, the heat dissipation base 1, the LED lamp column 12 and the fixing parts 13, the heat dissipation efficiency of the LED car light can be greatly improved, ensuring that the LED light source can work stably in a high temperature environment, thereby extending its service life.

[0030] In the utility model, through the groove design filled with heat dissipation condensate, an efficient heat-conducting uniform temperature circulation body can be formed around the LED light source substrate, which can quickly conduct the heat of the LED light source to the rear end heat sink, thereby ensuring that the LED light source can work stably in a high temperature environment, thereby extending its service life.

[0031] In the present invention, when the LED light source substrate 2 is working, a large amount of heat will be generated, which will first be conducted to the LED lamp column body 12 through the fixing member 13, and then further conducted to the heat dissipation base 1 and the heat dissipation fins 11. At the same time, the heat dissipation condensate in the groove 3 will also absorb part of the heat and evaporate. The evaporated condensate can dissipate the heat into the air through the heat dissipation fins 11, and then cool and re-condense into liquid to continue circulating heat dissipation. In this process, the heat dissipation base 1, the heat dissipation fins 11, the LED lamp column body 12, the fixing member 13 and the heat dissipation condensate work together to form an efficient heat dissipation system, which not only improves the heat dissipation efficiency, but also ensures that the LED car lights can work stably in high temperature environments.

[0032] Furthermore, in this embodiment, if Figure 6 As shown, a fan fixing part 4 protruding inward is fixed to the lower end of the heat dissipation base 1, and a fan assembly 5 is arranged inside the fan fixing part 4. The design of the fan fixing part 4 protruding inward can more effectively utilize the space below the heat dissipation base, provide sufficient installation space for the fan assembly 5, and ensure that the airflow of the fan can smoothly pass through the heat dissipation base 1, thereby improving the heat dissipation efficiency. Moreover, the fan assembly 5 can accelerate the heat exchange between the heat dissipation base 1 and the surrounding air by forced convection, thereby further improving the heat dissipation efficiency. This is particularly important for high-power LED headlights, which can ensure that the LED light source can maintain a stable operating temperature under long-term operation. Slots 41 that penetrate the inside of the heat dissipation base 1 are provided around the top of the fan fixing part 4, so that the cold air inhaled by the fan assembly 5 can directly act on the heat dissipation base 1, while promoting the air flow inside the heat dissipation base to improve the heat dissipation effect.

[0033] In this embodiment, when the LED light source is working, the heat generated can first be conducted to the heat dissipation base 1 through the LED light source substrate 2. The heat dissipation fins on the heat dissipation base 1 increase the heat dissipation area and promote the natural convection heat dissipation of heat. At the same time, the fan assembly 5 is started, and the cold air is sucked in through the slot 41 at the top of the fan fixing member 4. When the cold air passes through the heat dissipation fins 11 of the heat dissipation base 1, it takes away the heat and becomes hot air. The hot air is then discharged through the exhaust port of the heat dissipation base 1, forming a complete heat dissipation cycle. This design ensures that the LED headlight can still maintain a stable temperature when working at high power, thereby extending the service life of the LED light source and improving the reliability of the headlight.

[0034] Furthermore, in this embodiment, if Figure 5-7As shown, a first heat dissipation gap 15 that is connected to the inside of the heat dissipation base 1 is provided between adjacent heat dissipation fins 11. In some embodiments, the provision of the first heat dissipation gap 15 allows air to flow freely between the heat dissipation fins 11, thereby enhancing the heat exchange between the heat dissipation base 1 and the surrounding air. This design improves the heat dissipation efficiency, especially in the case of natural convection heat dissipation.

[0035] In addition, in this embodiment, when the LED light source is working, the heat generated is first conducted to the heat dissipation base 1 through the LED light source substrate 2. The heat dissipation base 1 can evenly distribute the heat to each heat dissipation fin 11, and since the first heat dissipation gap 15 is provided between the heat dissipation fins 11, the air can flow freely in these gaps. When the air flows through the heat dissipation fins 11, the heat can be transferred from the heat dissipation fins 11 to the air, thereby achieving heat dissipation. In the case of natural convection heat dissipation, the hot air will rise due to its low density, and the cold air will be supplemented from the outside to form a natural convection cycle. This cycle helps to continuously take away the heat from the heat dissipation base and keep the operating temperature of the LED light source within a reasonable range. If the headlight is equipped with a fan assembly, the forced convection of the fan will further accelerate the air flow and improve the heat dissipation efficiency. The fan inhales cold air, takes away the heat and discharges the hot air through the heat dissipation gap between the heat dissipation base and the heat dissipation fins, forming an efficient heat dissipation cycle.

[0036] Furthermore, in this embodiment, if Figure 1-2 The lower end of the heat sink 1 is provided with a second opening 16 for the pin terminal 6 to pass through. The design of the second opening 16 allows the pin terminal 6 to pass through the heat sink smoothly so as to be connected to an external power source or other electrical components. At the same time, the second opening 16 also provides an additional heat dissipation channel, which helps to dissipate the heat inside the heat sink 1 to the outside. The pin terminal 6 is connected to an adapter board 7 that is electrically connected to the LED light source substrate 2. The pin terminal 6 is the connection point between the LED car light and the external power source, and it is necessary to ensure good electrical connection and reliability. The design of the adapter board 7 can be used to electrically connect the pin terminal 6 to the LED light source substrate 2 to realize the power supply of the LED light source. A second heat dissipation gap 17 that penetrates the interior of the heat dissipation base 1 is provided between the adapter plate 7 and the heat dissipation base 1. The second heat dissipation gap 17 is communicated with the second opening 16 to form a wider heat dissipation channel, which helps to dissipate heat to the external environment faster to further improve the heat dissipation efficiency. A gap is left between the adapter plate 7 and the heat dissipation base 1 to allow air to flow, thereby taking away the heat generated by the adapter plate 7 and the LED light source substrate 2. At the same time, this gap is also communicated with the second opening 16 to form a wider heat dissipation channel.

[0037] In addition, in the present embodiment, as heat is continuously generated and dissipated, air forms a convection cycle between the inside and outside of the heat dissipation base 1, and external cold air can enter the heat dissipation base through the second opening 16 and the second heat dissipation gap 17, and becomes hot air after absorbing heat, and is discharged through other openings of the heat dissipation base 1 or the second opening 16. This convection cycle helps to continuously remove heat from the heat dissipation base and the adapter plate, thereby keeping the operating temperature of the LED light source within a reasonable range.

[0038] In addition, in this embodiment, while maintaining the compactness of the structure, the design achieves efficient heat dissipation performance through the clever arrangement of the heat dissipation gap, which is conducive to the installation and use of the LED lamp in various vehicles, while ensuring the stability and reliability of the lamp.

[0039] Furthermore, in this embodiment, the heat dissipation base 1, the LED lamp column body 12 and the fixing member 13 are an integrated structure formed by die-casting or extrusion molding of heat dissipation aluminum material or heat dissipation copper material, which not only improves the strength and stability of the overall structure, but also facilitates the rapid conduction and dissipation of heat, greatly reduces thermal resistance and assembly errors, and improves heat dissipation efficiency. At the same time, aluminum materials have excellent thermal conductivity and light weight, ensuring efficient heat dissipation and lightweight of the headlights.

[0040] Furthermore, in this embodiment, if Figure 4 and Figure 8 The inner wall of the groove 3 is designed with a sawtooth structure, which can increase the surface area of ​​the inner wall of the groove 3, thereby increasing the heat dissipation area. A larger heat dissipation area means that heat can be dissipated to the air faster through heat conduction and convection, which helps to improve the heat dissipation efficiency of the LED headlight. At the same time, the sawtooth structure can form a number of small air channels in the groove 3. These channels can guide the air to flow in the groove, enhancing the effect of convection heat dissipation. The air will take away the heat on the inner wall of the groove during the flow process, further improving the heat dissipation performance. Furthermore, the sawtooth structure design can make the inner wall of the groove 3 more solid, able to withstand greater pressure and vibration, and improve the durability and reliability of the LED headlight.

[0041] Furthermore, in this embodiment, when the left and right ends of the first opening 14 are at the same height as the LED light source substrate 2 arranged on the fixing member 13, it is possible to ensure that the heat dissipation channel such as the heat dissipation fan or the natural convection channel is unobstructed. Such a design helps the heat to be quickly and evenly dissipated from the LED light source substrate 2 to the heat dissipation base 1 or the heat dissipation fins 11, and then discharged through the heat dissipation fan or natural convection. At the same time, this design also helps to reduce the thermal resistance on the heat dissipation path, so that the heat can be transferred to the heat dissipation component more efficiently. Since the heat generated by the LED light source substrate 2 can be directly and quickly transferred to the heat dissipation channel through the first opening, the heat dissipation efficiency can be significantly improved. And, when the LED light source substrate 2 arranged on the fixing member 13 is at the same height as the end of the first opening 14, it is easier to install the LED light source substrate 2 on the fixing member 13 and ensure good contact between it and the heat dissipation component, which helps to simplify the assembly process and improve production efficiency. In addition, this design also helps to enhance the overall structural stability of the LED headlight. Since a tight connection is formed between the LED light source substrate 2 and the heat dissipation component, the risk of loosening or damage caused by vibration or impact can be reduced.

[0042] Furthermore, in the present embodiment, the LED lamp column body 12 is provided with an annular buckle 8 fixedly connected to the headlight assembly. During installation, the LED lamp column body 12 only needs to be inserted into the corresponding position in the headlight assembly and then fixed with the annular buckle 8. This design can reduce the difficulty of installation, improve the installation efficiency, and make the replacement and maintenance of the LED lamp column body more convenient.

[0043] The above are only preferred specific implementation methods of the utility model, but the protection scope of the utility model is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the utility model, who makes equivalent replacements or changes based on the technical scheme and utility model concept of the utility model, should be covered by the protection scope of the utility model.

Claims

1. An LED car light, characterized in that: The invention comprises a heat dissipation base (1) having heat dissipation fins (11) on its outer wall, an LED lamp column (12) extending forward from the front end of the heat dissipation base (1) and penetrating the interior of the heat dissipation base (1), a fixing piece (13) being arranged horizontally inside the LED lamp column (12), an LED light source substrate (2) being clamped between the fixing piece (13) and the upper and lower parts, a first opening (14) being respectively provided at the upper and lower parts of the front end of the LED lamp column (12) for the light source of the LED light source substrate (2) to pass through, and grooves (3) communicating with each other are respectively arranged inside the left and right ends of the LED lamp column (12) and the fixing piece (13), the front and rear ends of the groove (3) being closed, and the groove (3) being filled with heat dissipation condensate.

2. The LED vehicle lamp according to claim 1, characterized in that: A fan fixing piece (4) protruding inwardly is fixed to the rear end of the heat dissipation base (1), a fan assembly (5) is arranged inside the fan fixing piece (4), and slots (41) penetrating the interior of the heat dissipation base (1) are arranged around the top of the fan fixing piece (4).

3. The LED vehicle lamp according to claim 2, characterized in that: A first heat dissipation gap (15) which is in communication with the interior of the heat dissipation base (1) is provided between adjacent heat dissipation fins (11).

4. The LED vehicle lamp according to claim 1, characterized in that: A second opening (16) for the pin terminal (6) to pass through is provided at the rear end of the heat dissipation base (1); an adapter plate (7) electrically connected to the LED light source substrate (2) is connected to the pin terminal (6); a second heat dissipation gap (17) penetrating the interior of the heat dissipation base (1) is provided between the adapter plate (7) and the heat dissipation base (1); the second heat dissipation gap (17) is in communication with the second opening (16).

5. The LED vehicle lamp according to any one of claims 1 to 4, characterized in that: The heat dissipation base (1), the LED lamp column body (12) and the fixing member (13) are an integrated or split structure formed by die-casting or extrusion molding using heat dissipation aluminum material or heat dissipation copper material.

6. The LED vehicle lamp according to claim 1, characterized in that: The inner wall of the groove (3) is designed as a sawtooth structure.

7. The LED vehicle lamp according to claim 1, characterized in that: The left and right ends of the first opening (14) are at the same height as the LED light source substrate (2) arranged on the fixing member (13).

8. The LED vehicle lamp according to claim 1, characterized in that: The LED lamp column body (12) is sleeved with an annular buckle (8) which is fixedly connected to the headlight assembly.

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