Liquid-cooled LED locomotive headlamp

Abstract

According to the liquid-cooled LED locomotive headlamp, the reflection cup is fixed on the lamp bracket, the lamp beads are arranged on the copper sleeve, and the copper sleeve has a certain length, so that a plurality of lamp beads can be arranged on the side wall of the copper sleeve, the high-power requirement can be met, and meanwhile, the fog permeability of the headlamp can be enhanced if the lamp beads with various chromaticity are arranged. Cooling liquid can be contained in the copper liquid cooling pipes, one ends of the copper liquid cooling pipes are inserted into the copper sleeves, the other ends of the copper liquid cooling pipes are connected with the heat dissipation fins, heat emitted by the lamp beads is rapidly transmitted into the heat dissipation fins through the copper pipes and the cooling liquid in the copper pipes, and rapid cooling is achieved. If the lamp bead needs to be maintained, only the bolt for fixing the copper sleeve needs to be detached and pulled out from the rear side of the lamp body, and the whole heat dissipation device and the copper sleeve are of a separable structure, so that the heat dissipation device can be repeatedly used, and the cost is greatly saved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of locomotive headlamps, and mainly relates to a liquid-cooled LED locomotive headlamp. BACKGROUND

[0002] At present, many LED locomotive headlamps use LED lamp beads as light sources. However, a large amount of heat is generated when the LED lamp emits light. If the heat is not dissipated in time, not only will the light decay of the LED lamp be caused, but also the lamp bead will be directly burned out in a serious case. Therefore, the existing LED lamps are all equipped with heat dissipation devices, and the volume is relatively large, which is not easy to operate during installation or maintenance and replacement. For example, if the locomotive lamp used on a train is extinguished, it cannot be replaced during the running process, and can only be disassembled, checked and replaced after the train stops.

[0003] In addition, the existing LED lamps are mostly directly attached to the substrate at the bottom of the reflector cup. In order to replace the damaged lamp bead, the substrate also needs to be disassembled and replaced, which has great disassembly difficulty and is not conducive to the later maintenance. At the same time, due to the limited space at the bottom of the reflector cup, the lamp bead cannot be made too much, which leads to limited power, and the brightness and penetration of the lamp are limited. SUMMARY

[0004] In order to overcome the above-mentioned deficiencies, the present application provides a liquid-cooled LED locomotive headlamp.

[0005] The technical scheme adopted by the present application to solve its technical problems is:

[0006] A liquid-cooled LED locomotive headlamp comprises:

[0007] A lamp holder, wherein the lamp holder is provided with a mounting kit;

[0008] A plurality of lamp bodies, wherein the lamp bodies are independent of each other and do not interfere with each other; the lamp body comprises:

[0009] A reflector cup, wherein one end of the reflector cup with a large diameter is fixed to the lamp holder through the mounting kit;

[0010] A copper sleeve, wherein the copper sleeve is vertically inserted into the reflector cup from the bottom of the reflector cup and is fixed to the reflector cup through a bolt, the side wall of the copper sleeve is provided with a plurality of lamp beads, the connecting line of the lamp bead is arranged in the copper sleeve, the connecting line is electrically connected with a driver, and a plurality of insertion grooves are arranged in the copper sleeve, and the opening of the insertion groove is located at the bottom of the copper sleeve;

[0011] A heat dissipation device, comprising:

[0012] A plurality of liquid cooling pipes, one end of each liquid cooling pipe is inserted into the insertion groove of the copper sleeve after being coated with thermal conductive silicone;

[0013] A plurality of heat dissipation fins with a plurality of through holes, the other end of the liquid cooling pipe is inserted into the through holes after being coated with heat-conducting silica gel.

[0014] The liquid cooling pipe is a copper pipe or an aluminum pipe, and is hollow inside and sealed with cooling liquid.

[0015] The front end of the copper sleeve is provided with an umbrella-shaped brim.

[0016] The application has the following advantages due to the technical scheme as described above.

[0017] The liquid cooling LED locomotive headlamp provided by the application fixes a reflecting cup on a lamp holder, and sets lamp beads on a copper sleeve. Since the copper sleeve has a certain length, a plurality of lamp beads can be arranged on the side wall of the copper sleeve, which not only meets the demand of high power, but also enhances the fog penetration of the lamp if the lamp beads of multiple chromaticities are equipped. A plurality of liquid cooling copper pipes can be filled with cooling liquid, one end of each pipe is inserted into the copper sleeve, and the other end is connected with a heat dissipation fin, so that the heat generated by the lamp beads is quickly transmitted to the heat dissipation fin through the copper pipe and the cooling liquid inside the pipe, and rapid cooling is realized. If the lamp beads need to be repaired, only the bolt for fixing the copper sleeve needs to be removed, and the lamp body can be pulled out from the rear side, and the heat dissipation device and the copper sleeve are also separable, so that the heat dissipation device can be repeatedly used, and the cost is greatly saved. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a side view of the utility model;

[0019] Fig. 2 is a front view of the locomotive lamp. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the application clearer, the technical scheme in the embodiments of the application will be described clearly and completely below in conjunction with the drawings in the embodiments of the application. Obviously, the described embodiments are some embodiments of the application, rather than all the embodiments. The components of the embodiments of the application described and shown in the drawings can be arranged and designed in various different configurations.

[0021] In conjunction with the drawings Figure 1 and 2 The liquid cooling LED locomotive headlamp shown in the drawings comprises a lamp holder and a lamp body fixed on the lamp holder.

[0022] Taking a train as an example, the lamp holder 1 is arranged at the position of the train lighting lamp, and the lamp holder 1 has a mounting sleeve 7 for fixing the lamp body 2 described below;

[0023] The lamp body 2 can be multiple, and the number of the lamp body 2 is generally 1-3 according to the demand of the train, Figure 2The two lamp bodies 2 are independent of each other and are in parallel connection, so that even if one lamp body 2 is damaged, the other lamp body 2 can still realize illumination

[0024] Specifically, the lamp body comprises a reflecting cup 3, a copper sleeve 4, a lamp bead 5 and a heat dissipation device 6.

[0025] The reflecting cup 3 is trumpet-shaped, and one end with a large diameter is fixed to the lamp holder 1 through the mounting sleeve 7.

[0026] The copper sleeve 4 is vertically inserted into the reflecting cup 3 from the bottom of the reflecting cup 3 and is fixed to the reflecting cup 3 through a bolt. The sidewall of the copper sleeve 4 is provided with a plurality of lamp beads 5. The connecting wires of the lamp beads 5 are arranged in the copper sleeve 4 and are electrically connected to the driver. The copper sleeve 4 is internally provided with a plurality of insertion slots, and the opening of the insertion slot is located at the bottom of the copper sleeve. Since the copper sleeve 4 has a certain length, the area for accommodating the lamp beads is indirectly increased. Therefore, a plurality of lamp beads can be arranged on the sidewall of the copper sleeve 4, which can not only meet the demand for high power but also enhance the fog-penetrating property of the lamp if the lamp beads of multiple chromaticities are provided.

[0027] The heat dissipation device 6 comprises a plurality of liquid cooling pipes 61 and a plurality of heat dissipation fins 62. The liquid cooling pipes 61 are copper pipes or aluminum pipes and are hollow and sealed with cooling liquid such as cooling oil. One end of the liquid cooling pipe 61 is inserted into the insertion slot of the copper sleeve 4 after being coated with heat-conducting silica gel. The heat generated by the lamp beads 5 during light emission is transmitted to the liquid cooling pipe 61 by the copper sleeve. The heat dissipation fin 62 has a plurality of through holes, and the other end of the liquid cooling pipe 61 is inserted into the through hole after being coated with heat-conducting silica gel.

[0028] The oil cooling liquid in the liquid cooling pipe 61 can achieve heat transfer through natural convection or phase change heat transfer. The specific heat capacity of oil is relatively high (about 2-3 kJ / (kg·K)), which can absorb more heat and then slowly release the heat through the heat dissipation fin 62, thereby reducing local temperature fluctuations. The oil cooling liquid can uniformly distribute the heat to the heat dissipation fin 62, avoiding material fatigue or performance degradation of the solid metal pipe due to local high temperature. When the oil absorbs heat, it evaporates into gas at the hot end, diffuses to the cold end through the pressure difference, and then releases heat and condenses back to liquid through the heat dissipation fin 62. The heat conduction efficiency of this mechanism is much higher than that of the solid metal pipe. Even without external driving force, the natural phase change of the oil cooling liquid can also achieve high-efficiency heat transfer.

[0029] The front end of the copper sleeve 4 is also provided with an umbrella-shaped brim 8 made of copper material, which not only plays a decorative role for the copper sleeve 4 and the entire lamp body but also increases the heat dissipation area of the copper sleeve 4.

[0030] The copper sleeve 4 and the heat dissipation device 6 work together to dissipate heat from the light-emitting LED beads 5 more quickly, thereby reducing the impact of high temperature on the PN junction in the LED beads 5 and thus reducing color decay. The copper sleeve 4 increases the area for accommodating the LED beads 5, allowing for the installation of multiple LED beads to achieve high-power illumination. This enables a single lamp body to integrate greater power and greater luminous intensity. Furthermore, simply replacing the LED beads 5 with different colors enhances the lamp's fog penetration. This design overcomes the shortcomings of existing locomotive lamps, which involve complex installation and replacement. Simultaneously, a single lamp body can achieve higher power, and the efficient heat dissipation structure ensures adequate heat dissipation for the LED beads even at high power, guaranteeing the smooth operation of the entire lamp body.

[0031] The parts not detailed above are existing technologies and therefore have not been described in detail.

Claims

1. A liquid-cooled LED locomotive headlight, characterized in that: include: A lamp holder, wherein the lamp holder has a mounting kit; Multiple lamps, which are independent of each other and do not interfere with each other; The lamp body includes: A reflector cup, the larger diameter end of which is fixed to the lamp holder by the mounting kit; A copper sleeve is vertically inserted into the reflector cup from the bottom and fixed to the reflector cup with bolts. The side wall of the copper sleeve has several LED beads. The connecting wires of the LED beads are placed inside the copper sleeve and are electrically connected to the driver. The copper sleeve has several slots inside, and the slot openings are located at the bottom of the copper sleeve. Heat dissipation device, including: Several liquid cooling tubes, with one end coated with thermally conductive silicone, are inserted into the slot of the copper sleeve; Several heat dissipation fins have multiple through holes, and the other end of the liquid cooling pipe is coated with thermally conductive silicone and then inserted into the through holes.

2. The liquid-cooled LED locomotive headlight according to claim 1, characterized in that: The liquid cooling pipe is made of copper or aluminum and is hollow inside, sealed with coolant.

3. The liquid-cooled LED locomotive headlight according to claim 1, characterized in that: The front end of the copper sleeve is provided with an umbrella-shaped brim.

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