A high-efficiency heat dissipation LED module for automotive lights

Abstract

This utility model discloses a high-efficiency heat dissipation LED module and automotive light, including an LED light module, a heat dissipation auxiliary mechanism mounted on the top of the LED light module, and a heat dissipation driving mechanism. The heat dissipation auxiliary mechanism includes a heat dissipation component one and a heat dissipation component two mounted on its top. The heat dissipation component two includes a heat dissipation sleeve and a heat dissipation pipe installed inside the heat dissipation sleeve. A cavity is formed inside the heat dissipation pipe, and several heat dissipation capillaries are fixedly connected inside the cavity. Several heat dissipation fins are evenly distributed on the outside of the heat dissipation pipe. This application achieves dual heat dissipation by sequentially setting heat dissipation component one and heat dissipation component two on the top of the LED light module. A cavity is set inside the heat dissipation component two, and several heat dissipation capillaries are set inside the cavity. During the heat dissipation process, the heat dissipation capillaries further assist in heat dissipation due to their capillary effect. Therefore, with the synergistic heat dissipation structure formed by the heat dissipation fins and heat dissipation capillaries, high-efficiency heat dissipation is achieved.

Description

Technical Field

[0001] This utility model relates to the field of LED lamp heat dissipation technology, specifically to an efficient heat dissipation LED module and automotive lamps. Background Technology

[0002] Automotive headlights are devices installed on automobiles to illuminate the vehicle while driving. Their main structure includes an LED light module and a lamp cover over the LED light module. The LED light module includes an LED light bead electrically connected to a circuit board. During operation, the LED light bead emits light, generating heat in the process. Therefore, in existing technologies, to ensure the normal operation of the LED light module and prevent damage to the circuit components on the circuit board due to high temperatures, heat dissipation devices are often installed on the LED light module.

[0003] However, the technology of using heat dissipation media for vehicle headlights is still not mature enough. For example, although heat dissipation media are used to further conduct heat away from the headlights, the heat generated during operation is still greater for higher-power headlights (LED lighting chips have higher power and more quantity, resulting in higher illumination). Therefore, it is necessary to quickly cool down the heat generated by the LED lighting. In other words, a heat dissipation device with higher heat dissipation efficiency is needed to solve the high temperature problem generated during the operation of higher-power headlights. Utility Model Content

[0004] The technical problem to be solved by this utility model is: how to provide a high-efficiency heat dissipation headlight for automobiles.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] A high-efficiency heat dissipation LED module includes an LED lamp module, a heat dissipation auxiliary mechanism mounted on the top of the LED lamp module, and a heat dissipation driving mechanism.

[0007] The heat dissipation auxiliary mechanism includes a heat dissipation component one and a heat dissipation component two installed on its top; the heat dissipation component two includes a heat dissipation sleeve and a heat dissipation tube installed inside the heat dissipation sleeve. A cavity is opened inside the heat dissipation tube, and several heat dissipation capillaries are fixedly connected inside the cavity. Several heat dissipation fins are evenly distributed on the outside of the heat dissipation tube, and the heat dissipation fins extend outward through the heat dissipation sleeve.

[0008] The heat dissipation drive mechanism includes a cooling fan mounted on the top of the heat sink.

[0009] This application achieves dual heat dissipation by sequentially arranging heat sink one and heat sink two on the top of the LED lamp module. A cavity is set inside heat sink two, and several heat dissipation capillaries are set inside the cavity. During the heat dissipation process, the heat dissipation capillaries further assist in heat dissipation due to their capillary effect. Therefore, with the cooperation of the heat dissipation structure formed by the heat dissipation fins and heat dissipation capillaries, high-efficiency heat dissipation is achieved.

[0010] As a further embodiment of this utility model, the outer wall of the heat dissipation capillary is heat-welded and fixed to the inner wall of the heat dissipation pipe.

[0011] As a further embodiment of this utility model: a plurality of the heat dissipation capillaries are circumferentially distributed on the inner wall of the heat dissipation tube.

[0012] As a further embodiment of this utility model: the heat dissipation fins evenly distributed on the outer side of the heat dissipation pipe adopt a conical needle-like structure.

[0013] As a further embodiment of this utility model: the heat dissipation drive mechanism further includes a mounting sleeve installed outside the heat dissipation fan, and the mounting sleeve is located on the top of the heat dissipation component two.

[0014] As a further embodiment of this utility model: the heat dissipation component includes a plurality of fish-scale-shaped heat dissipation fins, which are distributed in a circumferential manner, and heat dissipation channels are formed between adjacent heat dissipation fins.

[0015] As a further embodiment of this utility model: the heat dissipation sleeve has several through holes at equal intervals on its outer side, through which the heat dissipation fins can pass through the corresponding through holes, and an arc-shaped air guide shroud is provided outside the through holes between adjacent heat dissipation fins.

[0016] As a further embodiment of this utility model: the LED light module has a built-in circuit board.

[0017] As a further embodiment of this invention, the heat dissipation fins adopt a needle-like structure.

[0018] This utility model also discloses an automotive headlight, including the high-efficiency heat dissipation LED light described in any one of the above.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] First, this application achieves dual heat dissipation by sequentially setting heat sink one and heat sink two on the top of the LED lamp module, and sets a cavity inside heat sink two, with several heat dissipation capillaries inside the cavity. During the heat dissipation process, the heat dissipation capillaries further assist in heat dissipation due to their capillary effect. Therefore, with the cooperation of the heat dissipation structure formed by the heat dissipation fins and heat dissipation capillaries, high-efficiency heat dissipation is achieved.

[0021] Secondly, by setting heat dissipation fins, this application enables adjacent heat dissipation fins to form a heat dissipation channel, so that when the cooling airflow enters the heat dissipation fins, the cooling airflow passes quickly through the heat dissipation channel, thereby further improving the heat dissipation efficiency between the heat dissipation fins and the cooling airflow.

[0022] Finally, this application uses several needle-shaped heat dissipation fins fixedly connected to the outer wall of the heat dissipation pipe. The fish-scale-shaped heat dissipation fins cooperate with the needle-shaped heat dissipation fins to achieve the following: during operation, when the driven cooling airflow comes into contact with the heat dissipation fins, the needle-shaped heat dissipation fins first increase the heat exchange efficiency. At the same time, under the guidance of the fish-scale-shaped heat dissipation fins, the cooling airflow passes through the heat dissipation groove structure between the fish-scale-shaped heat dissipation fins and the needle-shaped heat dissipation fins. In this way, the contact area between the heat dissipation pipe and the cooling airflow is further increased to improve the heat dissipation effect. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of an automotive lamp according to an embodiment of the present invention;

[0024] Figure 2 for Figure 1 A structural diagram from another perspective;

[0025] Figure 3 This is a schematic diagram of the structure of an LED lamp with high-efficiency heat dissipation according to an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A structural diagram from another perspective;

[0027] Figure 5 A partial cross-sectional view of an LED lamp with high-efficiency heat dissipation according to an embodiment of this utility model;

[0028] Figure 6 for Figure 5 Enlarged view of part of the image;

[0029] Figure 7 for Figure 5 A sectional view;

[0030] Figure 8 for Figure 7 Enlarged view of part of the image;

[0031] Figure 9 This is a schematic diagram of the structure of the heat dissipation sleeve according to an embodiment of the present utility model;

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. LED light module; 11. Circuit board;

[0034] 2. Heat dissipation auxiliary mechanism; 21. Heat dissipation component one; 22. Heat dissipation component two; 221. Heat dissipation pipe; 222. Heat dissipation capillary tube; 23. Air guide shroud; 24. Heat dissipation sleeve;

[0035] 3. Heat dissipation drive mechanism; 31. Cooling fan; 32. Mounting sleeve. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below in conjunction with the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0037] Reference Figure 1 and Figure 2 A high-efficiency heat dissipation LED module includes an LED lamp module 1, a heat dissipation auxiliary mechanism 2, and a heat dissipation driving mechanism 3. The heat dissipation auxiliary mechanism 2 is installed on the top of the LED lamp module 1, and the heat dissipation driving mechanism 3 is installed on the top of the heat dissipation auxiliary mechanism 2. The heat dissipation driving mechanism 3 can apply cold air to the heat dissipation auxiliary mechanism 2 and dissipate heat from the LED lamp module 1 through the heat dissipation auxiliary mechanism 2. A conical cover is provided on the outside of the heat dissipation auxiliary mechanism 2 to cover the heat dissipation auxiliary mechanism 2 and the LED lamp module 1, and is connected to the mounting sleeve 32 on the outside of the heat dissipation driving mechanism 3 to form a whole.

[0038] LED light module 1 is a high-power LED light module commonly used in existing vehicle headlights. Its main structure includes a circuit board 11 and LED lights electrically connected and installed inside the circuit board 11. The working principle and structure are the same as those of existing automotive headlight LED light modules 1. During operation, the LED lights are powered by the circuit board 11 for illumination.

[0039] Those skilled in the art can learn about the specific structure and working principle of the LED lamp module 1 disclosed in this utility model by consulting technical manuals and dictionaries.

[0040] In order to solve the technical defect that the high temperature generated during the operation of the high-power LED lamp module 1 cannot be cooled down quickly in a short time, this utility model improves the heat dissipation structure of the existing LED lamp module 1; a heat dissipation auxiliary mechanism 2 is installed at the rear of the circuit board 11; by improving the heat dissipation auxiliary mechanism 2, heat dissipation is achieved in a heat dissipation method with higher heat dissipation efficiency.

[0041] Reference Figure 5 , Figure 6 , Figure 7 and Figure 8 The heat dissipation auxiliary mechanism 2 includes a heat dissipation component 1 21, a heat dissipation component 22, a heat dissipation pipe 221, a heat dissipation capillary tube 222, an air guide shroud 23, and a heat dissipation sleeve 24.

[0042] Reference Figure 5 The heat sink 21 is installed on the top of the LED module 1. The heat sink 21 includes several fish-scale-shaped heat sink fins, which are distributed in a circumferential manner. A heat dissipation channel is formed between adjacent heat sink fins. The heat sink fins are made of copper with excellent thermal conductivity.

[0043] Reference Figure 8 and Figure 9 The heat sink 22 includes a heat sink sleeve 24 and a heat sink pipe 221 installed inside the heat sink sleeve 24. A cavity is opened inside the heat sink pipe 221, and several heat sink capillaries 222 are fixedly connected inside the cavity. Several heat sink fins are evenly distributed on the outside of the heat sink pipe 221. The heat sink fins adopt a needle-like structure and extend outward through the through holes opened on the heat sink sleeve 24.

[0044] Several heat dissipation capillaries 222 are distributed circumferentially along the inner wall of the heat dissipation pipe 221. The heat dissipation capillaries 222 are fixed to the inner wall of the heat dissipation pipe 221 by heat welding. The heat dissipation capillaries 222 are connected. The lower end of the heat dissipation fins can contact the heat dissipation capillaries 222. The heat dissipation capillaries 222 are filled with heat dissipation medium. During operation, the heat dissipation capillaries 222 are used to dissipate heat through the capillary effect. The combination of capillary heat dissipation and heat dissipation fins increases the heat dissipation efficiency and improves the heat dissipation performance.

[0045] The heat dissipation sleeve 24 has a cylindrical structure. Several through holes are equidistantly opened on the outside of the heat dissipation sleeve 24. The heat dissipation fins can pass through the corresponding through holes. An arc-shaped air guide shroud 23 is provided outside the through holes between adjacent heat dissipation fins. The arc-shaped air guide shroud 23 can block half of the corresponding through hole. When the cold air blown by the fan passes through the raised scale structure on the sleeve, it achieves a circulation effect.

[0046] During operation, when the LED module 1 generates high temperature, the heat is conducted to the heat dissipation fins in contact with the LED module 1 (circuit board 11). Due to their large heat dissipation area, the heat dissipation fins provide initial and rapid cooling. As the vehicle's LED module 1 continues to operate, the high-temperature heat conduction heats the heat dissipation medium in the heat pipe 221. The heat dissipation medium is coolant, which absorbs heat in the radiator, causing its temperature to rise. The high-temperature coolant is then returned to the radiator's capillary tube. The external fan of the radiator forces in cool air, which exchanges heat with the high-temperature coolant in the pipes, lowering the coolant temperature. The cooled coolant then returns to the heat pipe 221, completing the circulation.

[0047] By guiding airflow through structural design, a convection channel of "intake-heat exchange-exhaust" is formed, which uses airflow to forcibly remove heat.

[0048] This completes a physical process in which the heat dissipation medium vaporizes at high temperature and liquefies at low temperature, continuously cooling down during the process. During the heat dissipation process, the heat dissipation capillary tube 222 further assists in heat dissipation due to its capillary effect (using the capillary effect of capillary tubes to assist in heat dissipation is a common application based on this property of capillary tubes in the prior art, and those skilled in the art can know by consulting technical manuals and dictionaries: in order to improve heat dissipation efficiency, the capillary heat dissipation effect of capillary tubes is often used in the prior art).

[0049] Therefore, with the synergistic heat dissipation structure formed by heat pipe 221 and heat dissipation capillary 222, high-efficiency heat dissipation is achieved.

[0050] Reference Figure 6 and Figure 7 The heat dissipation drive mechanism 3 includes a cooling fan 31 mounted on the top of the heat sink 22 and a mounting sleeve 32 mounted on the outside of the cooling fan 31. The mounting sleeve 32 is located on the top of the heat sink 22. The cooling fan 31 increases airflow, thereby accelerating the cooling of the heat pipe 221.

[0051] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A high-efficiency heat-dissipating LED module comprising an LED lamp module (1), characterized in that, It also includes a heat dissipation auxiliary mechanism (2) and a heat dissipation drive mechanism (3) installed on the top of the LED lamp module (1); The heat dissipation auxiliary mechanism (2) includes a heat dissipation component one (21) and a heat dissipation component two (22) installed on its top; the heat dissipation component two (22) includes a heat dissipation sleeve (24) and a heat dissipation pipe (221) installed inside the heat dissipation sleeve (24). A cavity is opened inside the heat dissipation pipe (221), and a number of heat dissipation capillaries (222) are fixedly connected inside the cavity. A number of heat dissipation fins are evenly distributed on the outside of the heat dissipation pipe (221), and the heat dissipation fins extend outward through the heat dissipation sleeve (24). The heat dissipation drive mechanism (3) includes a heat dissipation fan (31) mounted on the top of the heat dissipation component (22).

2. The LED module of claim 1, wherein: The outer wall of the heat dissipation capillary (222) is heat-welded to the inner wall of the heat dissipation pipe (221).

3. The LED module of claim 2, wherein: Several heat dissipation capillaries (222) are circumferentially distributed on the inner wall of the heat dissipation tube (221).

4. The high heat dissipation LED module of claim 1, wherein: The heat dissipation fins evenly distributed on the outer side of the heat pipe (221) adopt a conical needle-like structure.

5. The LED module of claim 1, wherein: The heat dissipation drive mechanism (3) also includes a mounting sleeve (32) installed outside the heat dissipation fan (31), and the mounting sleeve (32) is located on the top of the heat dissipation component (22).

6. The high efficiency heat dissipating LED module of claim 1, wherein: The heat dissipation component (21) includes several fish-scale-shaped heat dissipation fins, which are distributed in a circumferential manner, and heat dissipation channels are formed between adjacent heat dissipation fins.

7. The high efficiency heat dissipating LED module of claim 1, wherein: The heat dissipation sleeve (24) has several through holes at equal intervals on its exterior, through which heat dissipation fins can pass through the corresponding through holes, and an arc-shaped air guide shroud (23) is provided outside the through holes between adjacent heat dissipation fins.

8. The high efficiency heat dissipating LED module of claim 1, wherein: The LED lamp module (1) has a circuit board (11) inside.

9. The high efficiency heat dissipating LED module of claim 1, wherein: The heat dissipation fins have a needle-like structure.

10. An automotive vehicle lamp characterized by Including the high-efficiency heat dissipation LED lamp as described in any one of claims 1-9.

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