Waterproof and dustproof integrated automobile tail lamp shell sealing structure

Abstract

The application discloses a waterproof and dustproof integrated automobile tail lamp shell sealing structure and relates to the technical field of automobile tail lamps. The waterproof and dustproof integrated automobile tail lamp shell sealing structure comprises a lamp cover shell and a tail lamp box body fixedly connected to the lamp cover shell, a lamp cover bottom plate is arranged at the connection position of the lamp cover shell and the tail lamp box body, lamp cover partition plates are fixedly arranged on the upper and lower portions of the lamp cover bottom plate, the lamp cover partition plates divide the inner portion of the lamp cover shell into a lamp body cavity and a heat dissipation cavity, an automobile tail lamp is fixedly installed in the lamp body cavity, and a plurality of heat dissipation pads are arranged in the heat dissipation cavity. The inner portion of the lamp cover shell is divided into the lamp body cavity and the heat dissipation cavity, the position-adjustable heat dissipation base plate and the side through groove capable of being controlled to be turned on and turned off are arranged, and thus, while the waterproof and dustproof performance of the automobile tail lamp is ensured, effective heat dissipation can be realized according to actual requirements.

Description

Technical Field

[0001] This invention relates to the field of automotive taillight technology, specifically to a waterproof and dustproof integrated automotive taillight housing sealing structure. Background Technology

[0002] As a key component of a vehicle's rear safety system, taillights primarily serve functions such as brake warning, turn signal indication, and reversing assistance. Specifically, red brake lights signal deceleration to vehicles behind, amber turn signals clearly indicate the vehicle's turning intention, and white reversing lights provide illumination assistance during reversing. The stable operation of these functions plays a crucial role in preventing rear-end collisions and improving road safety.

[0003] However, in existing taillight housing designs, there is an irreconcilable contradiction between heat dissipation performance and environmental protection capabilities. On the one hand, to ensure waterproofing and dustproofing, most housings adopt a completely sealed structure. While this design effectively prevents rainwater and dust from entering, it severely restricts the dissipation of internal heat. Especially with the widespread adoption of high-brightness LED light sources, the problem of heat accumulation due to prolonged operation has become more prominent. The internal temperature of the housing continues to rise, accelerating the aging of the light source and the failure of electronic components, significantly shortening the lifespan of the lamp. On the other hand, some designs attempt to improve heat dissipation by opening heat dissipation holes or using open frames. However, such structures lack effective protection in rainy or dusty environments. Moisture and particulate matter can easily penetrate into the housing, causing circuit corrosion, optical surface contamination, and even electrical short circuits, similarly threatening the reliability and safety of the lamp. This fundamental conflict between heat dissipation needs and protection requirements makes it difficult for existing technologies to simultaneously meet the durability and functionality requirements of automotive taillights under complex operating conditions. Summary of the Invention

[0004] The purpose of this invention is to propose a waterproof and dustproof integrated sealing structure for automotive taillight housings, which solves the problem of poor heat dissipation in traditional sealing structures, leading to a reduced lifespan of the lamps.

[0005] The objective of this invention can be achieved through the following technical solutions: A waterproof and dustproof integrated automotive taillight housing sealing structure includes a lamp cover housing and a taillight box body fixedly connected to the lamp cover housing. A lamp cover base plate is provided at the connection between the lamp cover housing and the taillight box body. Lamp cover partitions are fixedly provided on the upper and lower parts of the lamp cover base plate. The lamp cover partitions divide the interior of the lamp cover housing into a lamp body cavity and a heat dissipation cavity. An automotive taillight is fixedly installed in the lamp body cavity, and a plurality of heat dissipation pads are provided in the heat dissipation cavity. A sealing baffle is fixedly installed inside the taillight housing. A heat dissipation base plate is slidably installed between the sealing baffle and the lamp cover base plate. Several linkage pins are slidably connected through the sealing baffle. One end of the linkage pin is fixedly connected to the heat dissipation base plate, and the other end of the linkage pin is fixedly connected to a fixed magnet. An electromagnet that cooperates with the fixed magnet is fixedly installed on the sealing baffle. When the electromagnet is energized, it has magnetism and generates attraction or repulsion with the fixed magnet to adjust the position of the heat dissipation base plate. Both sides of the taillight housing are provided with side passage grooves, and a sealing on / off component for controlling their opening and closing is provided at the side passage grooves.

[0006] Preferably, a rear cover is installed at the end of the taillight housing away from the taillight, and the rear cover is provided with several through slots that communicate with the interior of the taillight housing.

[0007] Preferably, the lampshade base plate is provided with a plurality of base plate through holes at both the upper and lower parts, the base plate through holes connecting the inner cavity of the lampshade housing and the taillight box, and the heat dissipation substrate is provided with a plurality of through hole inserts for sealing the base plate through holes on the side near the lampshade housing.

[0008] Preferably, the heat dissipation substrate has several heat dissipation fins on the side away from the lamp cover housing.

[0009] Preferably, the sealing baffle is provided with multiple baffle through holes, and the sealing baffle is provided with multiple blocking pins corresponding to the positions of the baffle through holes. A through hole blocking block for controlling the opening and closing of the baffle through hole is slidably connected to the blocking pin, and the through hole blocking block is connected to the linkage pin through a blocking block connecting plate. The sliding of the linkage pin drives the through hole blocking block to slide along the blocking pin, thereby controlling the opening and closing of the baffle through hole.

[0010] Preferably, a fan bracket is fixedly provided on the side of the sealing baffle away from the through hole block, and a cooling fan for blowing air to cool the car taillights is fixedly installed on the fan bracket.

[0011] Preferably, the sealing and switching assembly includes a side sealing plate slidably disposed on the inner side wall of the taillight housing, and a lower guide rail for sliding limit of the side sealing plate is provided at the bottom of the side wall of the taillight housing, an upper guide rail for sliding limit of the upper side sealing plate is provided at the top of the side wall of the taillight housing, and a translation drive mechanism for driving the side sealing plate to slide is rotatably installed in the side through groove.

[0012] Preferably, the translation drive mechanism includes a drive rotary seat, and both the upper and lower ends of the drive rotary seat are provided with connecting shafts that are rotatably connected to the side wall of the side passage groove. The drive rotary seat is provided with a rotary seat groove, and a telescopic connector is slidably connected at the rotary seat groove. The end of the telescopic connector away from the drive rotary seat is rotatably connected to the side sealing plate.

[0013] Preferably, a rotary guide rod is fixedly installed in the rotary slot, and the telescopic connector includes a telescopic connecting plate slidably connected to the rotary guide rod. A telescopic sliding plate is fixedly installed at one end of the telescopic connecting plate. The telescopic sliding plate slides out of the rotary slot and is rotatably connected to the side sealing plate. A connecting spring is sleeved on the outer periphery of the rotary guide rod. One end of the connecting spring is fixedly connected to the telescopic connecting plate, and the other end is fixedly connected to the inner side wall of the rotary slot. A sealing plate groove for avoiding the rotation of the drive rotary is provided on the side of the side sealing plate near the drive rotary. A sealing plate pin rod rotatably connected to the telescopic sliding plate is fixedly installed in the sealing plate groove.

[0014] Preferably, the side wall of the taillight housing is provided with a drive groove at the upper end of the side passage groove, and the outer side wall of the taillight housing is provided with a sealing lug for sealing the drive groove. The connecting shaft extends into the drive groove and is fixedly installed with a drive gear. The upper end of the upper guide rail is slidably connected with a drive rack that meshes with multiple sets of drive gears. The upper end of the drive rack is fixedly provided with a rack guide rod. The inner top of the taillight housing is fixedly provided with a limiting guide rail that slides with the rack guide rod. Both sides of the heat dissipation base plate are provided with linkage support rods fixedly connected to the drive rack. When the heat dissipation base plate moves under the drive of the sealing baffle, it synchronously drives the drive rack to move, thereby synchronously driving the rotation of multiple sets of drive seats, thus realizing the on / off control of the housing and the waterproof and dustproof control of the housing. When the internal temperature of the housing is too high, it is opened for heat dissipation. When it rains or the vehicle drives on a dusty dirt road, it is in a blocked state. At this time, heat dissipation is carried out inside the housing, and rain and dust are detected by the vehicle's sensors.

[0015] The beneficial effects of this invention are as follows: By dividing the interior of the lamp housing into a lamp body cavity and a heat dissipation cavity, and by providing an adjustable heat dissipation substrate and a controllable side passage groove, effective heat dissipation is achieved while ensuring the waterproof and dustproof performance of the automotive taillights, based on actual needs. This structure can flexibly adjust the internal heat dissipation state of the housing by moving the heat dissipation substrate via an electromagnet and controlling the opening and closing of the side passage groove through a sealing on / off component, according to changes in the external environment. This avoids the problem of reduced lamp lifespan caused by poor heat dissipation in traditional sealed structures, and also avoids the drawbacks of open structures being susceptible to rain and dust intrusion, thereby extending the lifespan of the automotive taillights and improving their reliability. Attached Figure Description

[0016] The invention will now be further described with reference to the accompanying drawings.

[0017] Figure 1 This is a three-dimensional structural diagram of the entire invention; Figure 2 This is an isometric structural schematic diagram of the entire invention; Figure 3This is a schematic diagram of the side through groove of the present invention in the open state; Figure 4 This is a three-dimensional structural diagram of the taillight housing of the present invention; Figure 5 This is a rear view structural diagram of the taillight housing of the present invention; Figure 6 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure along the AA direction; Figure 7 This is the present invention. Figure 5 Schematic diagram of the cross-sectional structure in the middle BB direction; Figure 8 This is a three-dimensional structural diagram of the interior of the taillight housing of the present invention; Figure 9 This is an isometric structural diagram of the interior of the taillight housing of the present invention; Figure 10 This is a schematic diagram of the connection structure between the side sealing plate and the drive rotary base of the present invention. Figure 11 This is a top view schematic diagram of the connection structure between the side sealing plate and the drive rotary seat of the present invention; Figure 12 This is the present invention. Figure 10 A schematic diagram of the cross-sectional structure along the CC direction.

[0018] In the diagram: 1. Lamp housing; 11. Lamp partition; 12. Heat dissipation pad; 13. Lamp base plate; 14. Base plate through hole; 2. Automotive taillight; 3. Taillight housing; 31. Sealing lug; 32. Side through groove; 33. Lower guide rail; 34. Upper guide rail; 35. Limiting guide rail; 4. Rear cover of the housing; 41. Rear cover through groove; 5. Sealing switch assembly; 51. Drive rack; 511. Rack guide rod; 52. Drive gear; 53. Connecting shaft; 54. Drive pivot; 541. Pivot slot; 542. Pivot 543. Guide rod; 55. Connecting spring; 56. Telescopic connector; 57. Telescopic connecting plate; 58. Telescopic sliding plate; 59. Side sealing plate; 50. Sealing plate groove; 51. Sealing plate pin; 60. Heat dissipation base plate; 61. Linkage support rod; 62. Heat dissipation fins; 63. Through-hole insert; 74. Sealing baffle; 75. Baffle through-hole; 76. Block pin; 77. Through-hole block; 78. Block connecting plate; 79. Fan bracket; 70. Heat dissipation fan; 71. Linkage pin; 72. Fixed magnet; 73. Electromagnet. Detailed Implementation

[0019] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0020] Traditional automotive taillights typically employ a sealed structure during prolonged use, which can lead to poor heat dissipation and a reduced lifespan. However, open-type taillights, designed for heat dissipation, are susceptible to damage from rain and dust, further impacting their lifespan.

[0021] For this, please refer to Figures 1-12 As shown, this application proposes a waterproof and dustproof integrated automotive taillight housing sealing structure, which includes a lamp cover housing 1 and a taillight box 3 fixedly connected to the lamp cover housing 1. A lamp cover base plate 13 is provided at the connection between the lamp cover housing 1 and the taillight box 3, and lamp cover partitions 11 are fixedly provided on both the upper and lower parts of the lamp cover base plate 13. The lamp cover partitions 11 divide the interior of the lamp cover housing 1 into a lamp body cavity and a heat dissipation cavity, wherein an automotive taillight 2 is fixedly installed in the lamp body cavity, and a plurality of heat dissipation pads 12 are provided in the heat dissipation cavity. A sealing baffle 7 is fixedly provided inside the taillight box 3, and a heat dissipation base plate 6 is slidably provided between the sealing baffle 7 and the lamp cover base plate 13. A plurality of linkage pins 77 are slidably connected through the sealing baffle 7, one end of the linkage pin 77 is fixedly connected to the heat dissipation base plate 6, and the other end is fixedly connected to a fixing magnet 78. An electromagnet 79, which cooperates with a fixed magnet 78, is fixedly installed on the sealing baffle 7. When energized, the electromagnet 79 becomes magnetic, generating an attractive or repulsive force with the fixed magnet 78, thereby adjusting the position of the heat dissipation base plate 6. Furthermore, side passage grooves 32 are provided on both side walls of the taillight housing 3. Sealing and shut-off components 5 are installed at these side passage grooves 32 to control their opening and closing, thus ensuring effective heat dissipation for the automotive taillights while maintaining waterproof and dustproof performance.

[0022] This application provides a waterproof and dustproof integrated automotive taillight housing sealing structure, which is achieved through the following means: First, the structure includes a lampshade housing 1 and a taillight housing 3 fixedly connected to the lampshade housing 1. The lampshade housing 1 can be made of transparent or semi-transparent material to allow light to pass through, while the taillight housing 3 can be made of opaque structural material. The two can be fixedly connected by bolts, snap-fit ​​connections, or welding to form a single external protective housing.

[0023] Furthermore, a lampshade base plate 13 is provided at the connection between the lampshade housing 1 and the taillight housing 3. The lampshade base plate 13 can be an independent plate-shaped component, which is installed in the connection area by means of bonding, riveting or screw fixing, etc., to separate the internal space of the lampshade housing 1 and the taillight housing 3.

[0024] Based on this, lampshade partitions 11 are fixedly installed on both the upper and lower parts of the lampshade base plate 13. These lampshade partitions 11 can be made of the same material as the lampshade base plate 13 and are fixed by means of bonding, snap-fitting, or integral molding. The function of the lampshade partitions 11 is to divide the interior of the lampshade housing 1 into a lamp body cavity and a heat dissipation cavity. For example, the lampshade partitions 11 can form a closed inner cavity as the lamp body cavity, while its external space serves as the heat dissipation cavity.

[0025] Specifically, a car taillight 2 is fixedly installed inside the lamp housing cavity. The car taillight 2 can be securely installed in a preset position within the lamp housing cavity using brackets, screws, or clips to ensure its stability during vehicle operation.

[0026] Meanwhile, several heat dissipation pads 12 are provided inside the heat dissipation cavity. These heat dissipation pads 12 can be made of materials with good thermal conductivity, such as thermally conductive silicone pads, metal heat sinks, or graphite sheets, and are placed inside the heat dissipation cavity by bonding or pressing to enhance heat conduction efficiency.

[0027] In addition, a sealing baffle 7 is fixedly installed inside the taillight housing 3. The sealing baffle 7 can be a rigid plate structure, which is fixed to the inner wall of the taillight housing 3 by means of screws, rivets or welding, and serves as a support and guide structure for the internal components.

[0028] In a preferred embodiment, a heat dissipation substrate 6 is slidably disposed between the sealing baffle 7 and the lampshade base plate 13. The heat dissipation substrate 6 can be a flat plate component, with gaps between its edges and the sealing baffle 7 and the lampshade base plate 13, and sliding is achieved through a simple groove structure or guide pin and guide hole.

[0029] Therefore, a number of linkage pins 77 are slidably connected to the sealing baffle 7. The linkage pins 77 can be round rods made of stainless steel or plastic, which slide through the pre-set through holes on the sealing baffle 7. A simple bushing can be provided in the through hole to reduce friction.

[0030] Furthermore, one end of the linkage pin 77 is fixedly connected to the heat sink 6, and the other end of the linkage pin 77 is fixedly connected to a fixing magnet 78. The connection between the linkage pin 77 and the heat sink 6 can be achieved by threading, welding, or bonding. The fixing magnet 78 can be a permanent magnet, which is fixed to the end of the linkage pin 77 by bonding or snapping.

[0031] Meanwhile, an electromagnet 79, which cooperates with the fixed magnet 78, is fixedly installed on the sealing baffle 7. The electromagnet 79 can be fixed on the sealing baffle 7 by screws or adhesive, and its position is opposite to the fixed magnet 78 so as to generate a magnetic force when energized.

[0032] Specifically, the electromagnet 79 becomes magnetic when energized, generating an attractive or repulsive force with the fixed magnet 78, thereby adjusting the position of the heat dissipation substrate 6. When the electromagnet 79 is energized, the magnetic field it generates can interact with the fixed magnet 78, generating an attractive or repulsive force depending on the current direction and magnetic pole setting, thereby driving the linkage pin 77 to slide, and further driving the heat dissipation substrate 6 to move between the sealing baffle 7 and the lampshade base plate 13, realizing the adjustment of the heat dissipation state.

[0033] In addition, side passage grooves 32 are provided on both side walls of the taillight housing 3. These side passage grooves 32 can be simple rectangular or circular openings, formed directly on the side walls of the taillight housing 3, to provide a path for air circulation.

[0034] Finally, a sealing and shut-off assembly 5 is provided at the side passage 32 to control its opening and closing. The sealing and shut-off assembly 5 can be a simple manual slide or flap, which can be manually operated or through a simple mechanical linkage mechanism to open or close the side passage 32, thereby controlling the communication between the inside of the box and the external environment.

[0035] The waterproof and dustproof integrated automotive taillight housing sealing structure of this application divides the interior of the lamp housing 1 into a lamp body cavity and a heat dissipation cavity, and provides an adjustable heat dissipation substrate 6 and a controllable side passage groove 32. This achieves effective heat dissipation according to actual needs while ensuring the waterproof and dustproof performance of the automotive taillight 2. This structure can flexibly adjust the heat dissipation state inside the housing by moving the heat dissipation substrate 6 via an electromagnet 79 and controlling the opening and closing of the side passage groove 32 via the sealing on / off component 5, according to changes in the external environment. This avoids the problem of reduced lamp life due to poor heat dissipation in traditional sealed structures, and also avoids the disadvantages of open structures being susceptible to rainwater and dust intrusion, thereby extending the service life of the automotive taillight 2 and improving its reliability.

[0036] In some of the solutions mentioned above in this application, a taillight housing with a side passage groove is proposed to achieve sealing and heat dissipation of the car taillight in conjunction with the lamp cover housing. However, the end of the taillight housing away from the car taillight is not provided with a corresponding closed structure. This not only fails to prevent external water and dust from entering the structure from the end of the housing, affecting the overall waterproof and dustproof effect, but also fails to provide a reasonable air circulation channel to meet the heat dissipation requirements of the structure. Therefore, it cannot simultaneously meet the needs of sealing protection and ventilation and heat dissipation.

[0037] In response, this application proposes a waterproof and dustproof integrated sealing structure for automotive taillight housings. Please refer to [link / reference needed]. Figures 1-3 As shown, a rear cover 4 is installed at the end of the taillight housing 3 away from the taillight 2. The rear cover 4 has several through slots 41 that communicate with the interior of the taillight housing 3.

[0038] Specifically, the rear cover 4, as a sealing component at the end of the taillight housing 3, primarily serves to physically seal the opening of the taillight housing 3, preventing moisture, dust, and other pollutants from the external environment from directly entering the interior of the taillight housing 3. The rear cover 4 can be fixed to the edge of the opening of the taillight housing 3 using screws, clips, or adhesives to form a relatively sealed structure. Furthermore, the rear cover 4 can also be designed to be detachable or openable, for example, connected to the taillight housing 3 via hinges or sliding rails, to facilitate internal maintenance or cleaning when needed. Its material can be selected from engineering plastics, metal alloys, or composite materials that match the taillight housing 3 to ensure its structural strength and weather resistance.

[0039] The rear cover channels 41 are several openings provided on the rear cover 4 of the taillight housing. Their function is to provide a necessary channel for air circulation between the interior of the taillight housing 3 and the external environment while the rear cover 4 provides basic sealing. These rear cover channels 41 can be designed in various geometric shapes such as circular, square, rectangular, or grid-like, and can be evenly or non-evenly distributed on the rear cover 4 according to actual needs. The size and number of channels can be optimized according to the required ventilation volume and the balance between dust and water protection. For example, while ensuring sufficient ventilation area, smaller apertures or dustproof nets can be used to reduce the entry of dust and water droplets. In addition, the rear cover channels 41 can also be designed with airflow guiding structures, such as inclined blades or deflectors, to guide the airflow direction, improve heat dissipation efficiency, and further prevent rainwater from directly entering.

[0040] Through the above technical solution, a rear cover 4 is installed at the end of the taillight housing 3 away from the taillight 2, effectively sealing the end opening of the taillight housing 3. This prevents rainwater and dust from directly entering the structure from this end, significantly improving the overall waterproof and dustproof sealing performance. Furthermore, several rear cover slots 41 on the rear cover 4 provide channels for air circulation inside the taillight housing 3. When the taillight 2 generates heat, the hot air inside the housing can be exhausted to the external environment through these rear cover slots 41, assisting in heat dissipation of the overall structure without requiring additional complex on / off control structures at the rear, simplifying the overall structure. Moreover, when the side slots 32 are blocked and the system uses the cooling fan 76 for internal circulation cooling, the rear cover slots 41 work in conjunction with the cooling fan 76 to provide the necessary airflow path, ensuring effective air circulation inside the housing and thus maintaining the heat dissipation effect. Therefore, this solution provides effective sealing protection while also taking into account the need for ventilation and heat dissipation, achieving a balance between sealing and heat dissipation, extending the service life of the car taillight 2, and improving its reliability under various environmental conditions.

[0041] In some of the embodiments described above in this application, it is proposed to connect the inner cavities of the lamp housing 1 and the taillight box 3 to conduct the heat generated by the operation of the automotive taillight 2 from the area where the lamp body is located to the outside for heat dissipation. However, in the implementation process, it is impossible to adjust the connection state according to the actual working conditions. When sealing, waterproofing and dustproofing are required, the connected channel will provide a path for rainwater and dust to enter the lamp body area, affecting the service life of the lamp. When the heat dissipation requirement is over, the channel cannot be closed in time, and it is impossible to simultaneously meet the heat dissipation requirement and the sealing, waterproofing and dustproofing requirements.

[0042] For this, please refer to Figures 1-7 As shown, several bottom plate through holes 14 are provided on the upper and lower parts of the lamp cover bottom plate 13. The bottom plate through holes 14 connect the inner cavity of the lamp cover housing 1 and the taillight box 3. Several through hole inserts 63 for sealing the bottom plate through holes 14 are provided on the side of the heat dissipation substrate 6 near the lamp cover housing 1.

[0043] Specifically, the lamp cover base plate 13 is a structural component at the connection between the lamp cover housing 1 and the taillight housing 3. Through holes 14, provided at both the top and bottom of the base plate, are holes that penetrate the base plate. These through holes 14 can be arranged in a regular array, for example, evenly distributed in the upper and lower areas of the lamp cover base plate 13, to ensure that heat can be evenly and effectively transferred from the lamp housing cavity and the heat dissipation cavity. Furthermore, the through holes 14 can also be optimized according to the heat-generating areas of the taillight 2, for example, by providing more or larger through holes in areas with higher heat generation to improve local heat dissipation efficiency. The shape of the through holes can be circular, square, or elliptical, depending on the manufacturing process and heat dissipation requirements. The through holes 14 physically establish a direct channel between the internal space of the lamp cover housing 1 (including the lamp housing cavity and the heat dissipation cavity) and the internal space of the taillight housing 3, allowing hot air or heat to enter the inner cavity of the taillight housing 3 from inside the lamp cover housing 1 through the through holes 14, thereby achieving initial heat dissipation. This connection can be a direct air channel, allowing air convection, or it can be achieved by filling the through-hole with a thermally conductive material to enable heat conduction.

[0044] Meanwhile, the heat dissipation substrate 6 has several through-hole inserts 63 on the side near the lampshade housing 1 for sealing the through holes 14 in the base plate. The through-hole inserts 63 are protruding structures on the heat dissipation substrate 6 corresponding to the positions of the through holes 14 in the base plate. The shape and size of the through-hole inserts 63 should match the through holes 14 in the base plate to ensure effective sealing and reduce gaps during insertion. For example, the inserts can be cylindrical, conical, or have a sealing ring. The through-hole inserts 63 can be integrally formed with the heat dissipation substrate 6, or fixed to the heat dissipation substrate 6 by bonding, screwing, or other methods. To improve sealing, the outer periphery of the through-hole inserts 63 can be provided with a sealing ring or sealing lip, or the insert itself can be made of a material with a certain degree of elasticity, such as silicone, rubber, or elastic plastic.

[0045] Through the above technical solution, this application, in conjunction with the movable and adjustable heat dissipation substrate 6 structure, achieves synchronous control of the communication state between the lamp housing 1 and the taillight housing 3, adapting to the usage requirements under different working conditions. Multiple bottom plate through holes 14 are provided on the upper and lower parts of the lamp housing base plate 13. These through holes 14 connect the interior of the lamp housing 1 and the interior of the taillight housing 3, allowing the heat generated by the taillight 2 to be smoothly transferred to one side of the taillight housing 3, facilitating subsequent outward heat dissipation and preventing heat accumulation in the lamp area from affecting its lifespan. The multiple through holes on the upper and lower parts improve the efficiency of heat transfer and ensure effective heat dissipation. A through-hole insert 63 corresponding to the bottom plate through holes 14 is provided on the side of the heat dissipation substrate 6 near the lamp housing 1. The opening and closing of the through holes can be controlled by the movement of the heat dissipation substrate 6 itself, eliminating the need for an additional independent drive control structure and making the overall structure more compact. When the heat dissipation substrate 6 moves to a position close to the lampshade base plate 13, the through-hole insert 63 is inserted into the corresponding through-hole 14 in the base plate, sealing the through-hole and cutting off the connection between the two cavities, thus meeting the requirements for sealing, waterproofing, and dustproofing. When heat dissipation is required, the heat dissipation substrate 6 moves away from the lampshade base plate 13, causing the through-hole insert 63 to disengage from the through-hole 14 in the base plate, restoring the connection between the two cavities and ensuring that heat can be smoothly dissipated. The on / off control and the position adjustment of the heat dissipation substrate 6 are performed synchronously, with consistent control steps, preventing misalignment of actions. This effectively solves the problem of not being able to adjust the on / off state according to actual working conditions, thus balancing heat dissipation and sealing, waterproofing, and dustproofing requirements.

[0046] In some of the embodiments described above in this application, a heat dissipation substrate 6 is proposed to cooperate with the opening and closing of the bottom plate through hole 14, so as to adapt to the heat dissipation and waterproof and dustproof requirements under different working conditions. However, in the implementation process, when the bottom plate through hole 14 is open and the heat dissipation substrate 6 receives the heat generated by the lamp body, the heat of the heat dissipation substrate 6 itself cannot be dissipated in time, which easily leads to the problem of heat accumulation. This not only reduces the overall heat dissipation efficiency, but may also affect the structural stability and service life of the heat dissipation substrate 6 due to long-term heat accumulation, and cannot meet the heat dissipation requirements under long-term high-load operation.

[0047] For this, please refer to Figures 1-7 As shown, a number of heat dissipation fins 62 are provided on the side of the heat dissipation substrate 6 away from the lamp cover housing 1.

[0048] Specifically, the heat dissipation fins 62 are structures used to increase the heat dissipation surface area and promote heat conduction and convection. They are typically made of highly thermally conductive materials, accelerating heat dissipation by increasing the contact area with the surrounding medium (such as air). The heat dissipation fins 62 can be integrally formed or welded to the heat dissipation substrate 6 using highly thermally conductive metal materials such as aluminum alloy or copper. Their shape can be designed as straight sheets, corrugated, needle-like, or grid-like to optimize heat dissipation efficiency and structural strength. For example, thin aluminum fins can be used and fixed to the heat dissipation substrate 6 by die casting or welding to form a regular array to maximize the contact area with air. In addition, the heat dissipation fins 62 can be arranged in an array, and their spacing and height can be optimized according to heat dissipation requirements and space constraints. To further improve heat dissipation efficiency, the surface of the heat dissipation fins 62 can be anodized, coated with a high-emissivity coating, or microstructured to enhance its thermal radiation capacity and convective heat transfer performance. For example, black anodizing can be applied to the surface of the heat dissipation fins 62 to improve its thermal emissivity. The purpose of the heat dissipation fins 62 is to directly improve the heat dissipation capacity of the heat dissipation substrate 6 itself, and to prevent heat from accumulating locally inside or on the surface of the heat dissipation substrate 6. This ensures that the heat dissipation substrate 6 can efficiently transfer heat after receiving the heat from the lamp body, and is a key structure for solving the problem of heat accumulation in the heat dissipation substrate 6.

[0049] Through the above technical solution, after receiving heat from the lamp housing cavity, the heat dissipation substrate 6 significantly increases the contact area with the air inside the taillight housing 3 through several heat dissipation fins 62 arranged on its side away from the lamp housing 1. These heat dissipation fins 62 can efficiently conduct the heat absorbed by the heat dissipation substrate 6 to its surface and dissipate it into the surrounding air through convection and radiation. This design effectively solves the problem that the heat dissipation substrate 6 itself cannot dissipate heat in time, avoiding the accumulation of heat on the heat dissipation substrate 6. Combined with the aforementioned solution that the heat dissipation substrate 6 can slide to adjust the opening and closing of the bottom plate through hole 14, when the bottom plate through hole 14 is open for heat dissipation, the presence of the heat dissipation fins 62 allows the heat dissipation substrate 6 to transfer heat to the air inside the taillight housing 3 more efficiently, and then cooperate with other heat dissipation structures inside the taillight housing 3 (such as the cooling fan 76, side through groove 32, etc.) to expel the heat. This not only improves the overall heat dissipation efficiency and ensures the performance stability and service life of the car taillight 2 under long-term high-load operation, but also avoids structural deformation or functional failure caused by heat accumulation. By positioning the heat dissipation fins 62 on the side of the heat dissipation substrate 6 away from the lamp housing 1, it avoids interfering with the sealing operation of the through-hole insert 63 on the side of the heat dissipation substrate 6 closest to the lamp housing 1, and also avoids occupying the installation space on one side of the lamp housing 1. Furthermore, it does not obstruct the sliding adjustment of the heat dissipation substrate 6 along the sealing baffle 7 and the lamp housing base plate 13, ensuring the normal functioning of the original structure. The placement of multiple heat dissipation fins 62 effectively increases the contact area between the heat dissipation substrate 6 and the air inside the taillight housing 3, allowing the heat absorbed by the heat dissipation substrate 6 to be transferred to the surrounding air more quickly. This, combined with the existing heat dissipation structure inside the housing, removes the heat, improving overall heat dissipation efficiency. Simultaneously, the multiple dispersed heat dissipation fins 62 can also distribute the heat, preventing excessive localized heat generation, ensuring the stability of the heat dissipation substrate 6, extending the structural lifespan, and adapting to long-term, high-load heat dissipation requirements.

[0050] In some of the embodiments described above in this application, a sealing baffle is proposed to separate the internal space of the taillight housing. It works in conjunction with the movement of the heat dissipation substrate to adjust heat dissipation while ensuring structural sealing. However, in its implementation, the sealing baffle itself does not have a controllable on / off structure. It cannot switch its on / off state according to actual heat dissipation and waterproof / dustproof protection requirements. When heat dissipation is needed, airflow cannot pass through the sealing baffle to form a circulation. When sealing protection is needed, it cannot block external moisture and dust from entering the interior through the sealing baffle. It also cannot work in conjunction with the overall sealing and heat dissipation adjustment structure to achieve synchronous on / off control, thus affecting the overall waterproof, dustproof, and heat dissipation adjustment effect of the structure.

[0051] For this, please refer to Figures 1-7As shown, the sealing baffle 7 is provided with a plurality of baffle through holes 71, and the sealing baffle 7 is provided with a plurality of blocking pins 72 corresponding to the positions of the baffle through holes 71. A through hole blocking block 73 for controlling the opening and closing of the baffle through holes 71 is slidably connected to the blocking pin 72, and the through hole blocking block 73 is connected to the linkage pin 77 through the blocking block connecting plate 74. The sliding of the linkage pin 77 drives the through hole blocking block 73 to slide along the blocking pin 72, thereby controlling the opening and closing of the baffle through holes 71.

[0052] Specifically, the multiple through holes 71 provided on the sealing baffle 7 are holes that penetrate the sealing baffle 7. Their main function is to provide a flow path for airflow when heat dissipation is required, allowing the air inside the taillight housing 3 to exchange with the outside or the heat dissipation cavity, thereby carrying away heat. The through holes 71 can be designed in various geometric shapes such as circles, squares, or ellipses, and are evenly distributed in the effective heat dissipation area of ​​the sealing baffle 7 to maximize the airflow passage area. Alternatively, the diameter and number of through holes 71 can be optimized according to the power of the automotive taillight 2 and the expected heat dissipation requirements. For example, high-power taillights can use larger diameter or more through holes.

[0053] The multiple plug pins 72 on the sealing baffle 7, corresponding to the positions of the baffle through holes 71, are rod-shaped structures fixed to the sealing baffle 7 and precisely aligned with the positions of the baffle through holes 71. Their core function is to provide stable sliding guidance and limiting for the through hole plugs 73, ensuring that the through hole plugs 73 can accurately align and block or open the baffle through holes 71 during movement. The plug pins 72 can be made of metal or high-strength engineering plastic and are firmly fixed to the sealing baffle 7 by riveting, welding, or integral molding. Alternatively, the surface of the plug pins 72 can be polished or coated with a low-friction material to reduce the frictional resistance when the through hole plugs 73 slide, improving the smoothness and reliability of the operation.

[0054] The through-hole plug 73, slidably connected to the plug pin 72 and used to control the opening and closing of the baffle through-hole 71, is a component that can slide along the plug pin 72. Its main function is to cover or expose the baffle through-hole 71 as needed through its own movement, thereby achieving control over the opening and closing of the baffle through-hole 71. The through-hole plug 73 can be designed as a plate-like structure, with a size slightly larger than the baffle through-hole 71, to ensure that it can completely cover and seal the baffle through-hole 71 in the blocked state. Alternatively, the through-hole plug 73 can be made of a sealing material with a certain degree of elasticity, such as silicone, rubber, or soft plastic, to form a tight fit with the surface of the sealing baffle 7 during sealing, thereby enhancing the sealing effect.

[0055] The through-hole plug 73 is connected to the linkage pin 77 via a plug connecting plate 74. The plug connecting plate 74 connects the through-hole plug 73 and the linkage pin 77, transmitting the linear sliding motion of the linkage pin 77 to the through-hole plug 73, thus achieving synchronous movement of the through-hole plug 73. The plug connecting plate 74 can be a rigid, integrally formed strip, fixed to the through-hole plug 73 and the linkage pin 77 by screws, rivets, or adhesive bonding. Alternatively, the plug connecting plate 74 can be designed as a flexible connector to accommodate minor deviations that may occur during assembly or movement, while ensuring effective force transmission.

[0056] The sliding of the linkage pin 77 drives the through-hole plug 73 to slide along the plug pin 72, thereby controlling the opening and closing of the baffle through-hole 71. This technical feature describes the overall linkage mechanism for controlling the opening and closing of the baffle through-hole 71. As the core driving component, the linkage pin 77, by sliding on the sealing baffle 7, not only adjusts the position of the heat dissipation substrate 6, but also drives the through-hole plug 73 to move along the plug pin 72 via the plug connecting plate 74, thus opening or closing the baffle through-hole 71. When the linkage pin 77 slides in one direction, the through-hole plug 73 is moved to a position that completely covers the baffle through-hole 71, achieving a seal; when the linkage pin 77 slides in the opposite direction, the through-hole plug 73 moves to a position that completely exposes the baffle through-hole 71, achieving conduction. Alternatively, the sliding stroke of the linkage pin 77 and the moving stroke of the through hole plug 73 can be precisely matched to ensure that when the heat dissipation substrate 6 reaches the preset position, the baffle through hole 71 can also reach the state of being fully open or fully closed at the same time, thereby achieving coordinated control of heat dissipation and sealing.

[0057] Through the above technical solution, a controllable on / off baffle through hole 71 is provided on the sealing baffle 7, effectively solving the problem in the prior art that the sealing baffle cannot switch on / off states according to actual needs. Specifically, when heat dissipation is required, the baffle through hole 71 can be opened, allowing airflow to pass through the sealing baffle 7, forming an effective air circulation, thereby removing the heat generated by the taillight 2 and ensuring its normal operating temperature. When waterproofing and dustproofing are required, the baffle through hole 71 can be closed, and the through hole plug 73 tightly covers the baffle through hole 71, effectively blocking external moisture and dust from entering the taillight housing 3, protecting the internal components from environmental corrosion. Furthermore, this application binds the on / off control of the baffle through hole 71 to the action of the linkage pin 77 that originally adjusts the position of the heat dissipation substrate 6. The plug pin 72 provides a stable guide for the through hole plug 73, and the plug connecting plate 74 directly transmits the sliding of the linkage pin 77 to the through hole plug 73, realizing the synchronous operation of the on / off action of the baffle through hole 71 and the position adjustment action of the heat dissipation substrate 6. This linkage mechanism avoids the need for an additional independent drive structure, simplifies the overall complexity of the device, and reduces manufacturing costs and failure rates. Simultaneously, because the on / off control and heat dissipation regulation are highly synchronized, the entire waterproof and dustproof integrated automotive taillight housing sealing structure can respond more precisely and efficiently to the heat dissipation and protection needs under different operating conditions. For example, it can open the through-hole to enhance heat dissipation in high-temperature, dry environments and close the through-hole to ensure a seal in humid, dusty environments, thereby significantly improving the service life and reliability of the automotive taillight 2.

[0058] In some of the embodiments described above in this application, a baffle through hole that can be controlled to open and close is proposed to be provided on the sealing baffle, so as to achieve heat dissipation control in conjunction with the overall structure, taking into account both waterproofing and dustproofing as well as heat dissipation requirements. However, in the process of its implementation, when the external environment is wet and dusty, and it is necessary to completely block the external connection passage to prevent dust and rainwater from entering, the original passive heat dissipation structure alone cannot efficiently remove the heat generated by the operation of the car taillights. It is difficult to achieve good heat dissipation while ensuring sealing, waterproofing and dustproofing, and it is still easy to affect the service life of the lamps.

[0059] For this, please refer to Figures 1-9 As shown, a fan bracket 75 is fixedly installed on the side of the sealing baffle 7 away from the through hole block 73, and a cooling fan 76 for blowing air to cool the car taillight 2 is fixedly installed on the fan bracket 75.

[0060] The fan bracket 75 is a structural component used to fix and support the cooling fan 76. Its function is to stably confine the cooling fan 76 in a preset position, ensuring that the cooling fan 76 will not shift or shake during operation, thereby improving the overall structural stability. The fan bracket 75 can be implemented in various ways. For example, it can be integrally molded with the sealing baffle 7, such as through injection molding or welding; alternatively, the fan bracket 75 can be a separate component, reliably fixed to the sealing baffle 7 using screws, rivets, or other fasteners. Furthermore, for ease of maintenance or replacement, the fan bracket 75 can also be designed as a detachable structure.

[0061] The cooling fan 76 is an active cooling device whose core function is to remove heat by forcing airflow. The cooling fan 76, in a sealed state with the external passage closed, accelerates the dissipation of heat generated during the operation of the car taillight 2 by generating active airflow, thereby significantly improving cooling efficiency. The type of cooling fan 76 can be selected according to specific needs. For example, an axial fan can be used, with the airflow direction parallel to the fan blade axis, suitable for cooling scenarios requiring high airflow and low pressure; or a centrifugal fan can be used, with the airflow direction perpendicular to the fan blade axis, suitable for cooling scenarios requiring higher pressure and moderate airflow. Additionally, a turbo fan can be selected to provide a more concentrated airflow. The cooling fan 76 can be installed by fixing it to the fan bracket 75 using screws, clips, or shock-absorbing pads to effectively reduce vibration and noise during operation.

[0062] Through the above technical solution, this application ingeniously adds an active heat dissipation structure without interfering with the original structural function. When the external environment is harsh, such as rainy or dusty conditions, the system needs to completely block the external connection channels to prevent dust and rainwater from entering. In this case, the traditional passive heat dissipation method is inefficient. This application sets a fan bracket 75 and installs a cooling fan 76 on the side of the sealing baffle 7 away from the through hole block 73, so that the cooling fan 76 can generate active airflow towards the car taillight 2. This active airflow can effectively drive the heat generated by the operation of the car taillight 2, and can actively and efficiently dissipate heat even in a completely sealed state with the external channels closed, thereby meeting the heat dissipation requirements. This design avoids the contradiction of having to open the external channels for heat dissipation when sealing, waterproofing and dustproofing are required, and achieves good heat dissipation while ensuring sealing, waterproofing and dustproofing. It effectively solves the problem of insufficient heat dissipation in the original solution in the sealed state, and helps to extend the service life of the car taillight 2. Meanwhile, the cooling fan 76 is positioned on the side of the sealing baffle 7 away from the through hole block 73, ensuring that it does not occupy the sliding working space of the through hole block 73, thus not interfering with the normal operation of the original through hole on / off control structure and ensuring the stable realization of the original function.

[0063] In some embodiments described above in this application, a sealing on / off assembly is proposed to control the opening and closing of the side passage, thereby enabling the taillight housing to adjust its heat dissipation state according to operating conditions, thus achieving both heat dissipation and waterproofing / dustproofing. However, in its implementation, no specific implementation structure of the sealing on / off assembly is provided, making it impossible to reliably and stably drive the sealing component to complete the on / off switching of the side passage. Consequently, it fails to meet the actual use requirements of switching the on / off state according to different operating conditions while simultaneously achieving both heat dissipation and waterproofing / dustproofing performance.

[0064] For this, please refer to Figures 7-12 As shown, the sealing and switching assembly 5 includes a side sealing plate 56 slidably disposed on the inner side wall of the taillight housing 3, and a lower guide rail 33 is provided at the bottom of the side wall of the taillight housing 3 to limit the sliding of the side sealing plate 56, and an upper guide rail 34 is provided at the top of the side wall of the taillight housing 3 to limit the upper part of the side sealing plate 56. A translation drive mechanism for driving the side sealing plate 56 to slide is rotatably installed in the side through groove 32.

[0065] The sealing and switching component 5 is a key component for controlling the opening and closing of the side passage 32. Its main function is to flexibly adjust the connectivity between the interior of the taillight housing 3 and the external environment according to the working status of the taillight or external environmental conditions. For example, when heat dissipation is required, this component can open the side passage 32 to promote air circulation; when waterproofing and dustproofing are required, it can be closed to protect the internal components. This component can be implemented in various ways. For example, in addition to the sliding sealing plate structure used in this application, a rotating baffle, a flip-up cover, etc., can also be used, as long as effective on / off control of the side passage 32 can be achieved.

[0066] The side sealing plate 56 is a component in the sealing and switching assembly 5 that directly performs the blocking or opening action. It is slidably mounted on the inner wall of the taillight housing 3, covering or exposing the side passage groove 32 through its own movement. The side sealing plate 56 is typically made of materials with a certain degree of rigidity and weather resistance, such as engineering plastics or lightweight metals, to ensure that it does not deform or age during long-term use. Its sliding method can be linear motion guided by a guide rail, or curved motion achieved in conjunction with other mechanisms, but the core is to be able to move smoothly and accurately within the area of ​​the side passage groove 32.

[0067] The lower guide rail 33 is located at the bottom of the side wall of the taillight housing 3 and is used to slide and limit the lower part of the side sealing plate 56. Its function is to provide stable bottom support and guidance for the side sealing plate 56, preventing the side sealing plate 56 from deviating, tilting or getting stuck during sliding. The lower guide rail 33 can take the form of a raised groove, a recess, or an independent guide strip, which cooperates with the bottom edge of the side sealing plate 56 to ensure that the side sealing plate 56 moves smoothly along a preset path.

[0068] The upper guide rail 34 is located on the top of the side wall of the taillight housing 3 and is used to limit the sliding movement of the upper part of the side sealing plate 56. Together with the lower guide rail 33, the upper guide rail 34 forms a complete guiding system to ensure that the side sealing plate 56 remains vertically stable throughout the entire sliding stroke and avoids wobbling. The structure of the upper guide rail 34 can be similar to that of the lower guide rail 33, for example, by using raised grooves, recesses, or independent guide strips. Its design should ensure that the side sealing plate 56 slides smoothly without obstruction, while effectively restricting its lateral and longitudinal degrees of freedom.

[0069] The translation drive mechanism is responsible for converting external driving force into translational motion of the side sealing plate 56. This mechanism is rotatably mounted inside the side passage 32, and its core function is to convert rotational motion into linear motion, thereby precisely controlling the position of the side sealing plate 56. Besides the gear and rack transmission method that may be used in subsequent embodiments of this application, the translation drive mechanism can also take many other forms. For example, rotational motion can be converted into linear motion through a lead screw and nut mechanism, or rotational or reciprocating motion can be converted into translational motion of the side sealing plate 56 through a linkage mechanism, cam mechanism, etc. Regardless of the form used, the mechanism should have sufficient driving force, precise positioning capability, and good durability to ensure that the side sealing plate 56 can reliably complete the on / off switching.

[0070] Through the above technical solution, this application clarifies the specific structure of the sealing and switching component 5, effectively solving the problem in the prior art where the structure of the sealing and switching component is unclear and cannot reliably and stably drive the blocking component to complete the switching of the side passage 32. Specifically, by sliding the side sealing plate 56 on the inner side wall of the taillight housing 3, and using the lower guide rail 33 and upper guide rail 34 to limit its upper and lower movement, the stability and accuracy of the side sealing plate 56 during the sliding process are ensured, avoiding jamming or displacement, thereby accurately blocking or opening the side passage 32, ensuring the tightness of the seal or the smoothness of heat dissipation. At the same time, the translation drive mechanism is rotatably installed inside the side passage 32, which drives the side sealing plate 56 to slide. This not only makes the drive structure tightly integrated with the side passage 32, reducing the space occupied inside the taillight housing 3 and making the overall structure more compact, but also smoothly converts the rotational action into the translational sliding of the side sealing plate 56 through the rotational drive method, making the drive process more stable and reliable. This structural design enables the sealing switch component 5 to achieve stable and reliable switching of the side channel 32 according to different working conditions (such as high temperature heat dissipation requirements or rain and dust protection requirements), thereby achieving a balance between heat dissipation performance and waterproof and dustproof performance of the automotive taillight 2, and effectively extending the service life of the automotive taillight 2.

[0071] In some embodiments described above in this application, a translational drive mechanism is proposed to drive the side sealing plate to slide, thereby controlling the opening and closing of the side passage. This allows for switching between the sealing and heat dissipation states of the enclosure under different operating conditions, meeting the dual requirements of waterproofing, dustproofing, and heat dissipation. However, in its implementation, ordinary drive structures are difficult to adapt to the linear sliding motion requirements of the side sealing plate. They cannot adapt to changes in the motion trajectory during the drive process, are prone to jamming, and cannot stably and smoothly drive the side sealing plate to complete the opening and closing action. Consequently, it is difficult to reliably switch the opening and closing of the side passage, affecting the normal operation of the overall sealing and heat dissipation structure.

[0072] For this, please refer to Figures 7-12 As shown, this application further proposes a translation drive mechanism, which includes a drive rotary seat 54. The upper and lower ends of the drive rotary seat 54 are provided with connecting shafts 53 that are rotatably connected to the side wall of the side through groove 32. The drive rotary seat 54 is provided with a rotary seat groove 541. A telescopic connector 55 is slidably connected at the rotary seat groove 541. The end of the telescopic connector 55 away from the drive rotary seat 54 is rotatably connected to the side sealing plate 56.

[0073] Specifically, the drive rotary seat 54 is the core component of the translation drive mechanism, and its main function is to serve as the input end of rotational force and the carrier for motion conversion. The drive rotary seat 54 can be integrally molded from high-strength engineering plastics or lightweight metal materials (such as aluminum alloy) to ensure structural stability and lightweight during rotation. Its shape can be designed as a disc-shaped or block-shaped structure with a certain thickness to facilitate the installation of the connecting shaft 53 and the internal rotary seat groove 541. The connecting shaft 53 is used to rotatably connect the drive rotary seat 54 to the side wall of the side passage groove 32, thereby providing a stable rotation center for the drive rotary seat 54. The connecting shaft 53 can be a cylindrical pin, with its two ends passing through the upper and lower ends of the drive rotary seat 54 respectively, and engaging with bearing seats or shaft holes on the side wall of the side passage groove 32. The material of the connecting shaft 53 can be wear-resistant, high-strength stainless steel or alloy steel to ensure long-term reliability. Furthermore, a bearing can be provided at the connection between the connecting shaft 53 and the side wall of the side passage groove 32 to reduce rotational friction and ensure smooth rotation of the drive rotary seat 54. The swivel groove 541 is a guide groove located inside the drive swivel 54, serving to provide sliding space and guidance for the telescopic connector 55. The swivel groove 541 is typically straight or slightly arc-shaped, with its inner wall surface precision-machined to ensure the smooth sliding of the telescopic connector 55. To further reduce friction, the inner wall of the swivel groove 541 can be polished, coated with a low-friction coefficient material such as polytetrafluoroethylene (PTFE), or fitted with a sliding bushing. The telescopic connector 55 is a key component for achieving the motion conversion between the rotation of the drive swivel 54 and the linear sliding of the side sealing plate 56. It has a variable length characteristic, adapting to changes in the distance between the drive swivel 54 and the side sealing plate 56 during rotation. The telescopic connector 55 can consist of two parts, such as an outer tube and an inner rod that slides within it, achieving telescoping through an internal guide structure. Another implementation method is to use a multi-section linkage mechanism, achieving overall length changes through relative rotation and sliding between the links. The material of the telescopic connector 55 should possess good wear resistance and sufficient strength, such as engineering plastics or lightweight metals. The end of the telescopic connector 55 furthest from the drive rotor 54 is rotatably connected to the side sealing plate 56. This rotatable connection ensures that the telescopic connector 55 can adapt to the relative angle changes between the side sealing plate 56 and the drive rotor 54 during linear sliding. Specifically, a connecting pin or connecting hole can be provided on the side sealing plate 56. The end of the telescopic connector 55 engages with this pin or connecting hole through a pin hole or ball joint, forming a highly flexible rotary joint. For example, a pin connection or a ball joint connection can be used, allowing the telescopic connector 55 to pull the side sealing plate 56 in linear motion at a suitable angle when the drive rotor 54 rotates, while simultaneously extending and retracting its own length, thus avoiding jamming caused by angle changes.

[0074] Through the above technical solution, this application designs the translation drive mechanism as a rotary drive structure with a telescopic connector 55, effectively solving the problem of jamming caused by the mismatch between the linear sliding of the side sealing plate 56 and the motion trajectory of the drive mechanism. Specifically, the drive rotary seat 54 rotates stably through the connecting shaft 53, providing power to drive the side sealing plate 56. When the drive rotary seat 54 rotates, the telescopic connector 55 slides within the rotary seat groove 541 and adjusts its own length. At the same time, its rotational connection with the side sealing plate 56 can adapt to angle changes, thus smoothly converting the rotation of the drive rotary seat 54 into the linear sliding of the side sealing plate 56. This design avoids the jamming and unevenness that may occur during the drive process in traditional rigid connections, ensuring that the side sealing plate 56 can stably and reliably complete the opening and closing action, thereby achieving precise control of the opening and closing of the side passage groove 32. This allows the automotive taillight housing to reliably switch between a sealed state and a heat dissipation state under different working conditions, effectively improving the reliability and stability of waterproof, dustproof, and heat dissipation performance, and extending the service life of the automotive taillight 2.

[0075] In some of the embodiments described above in this application, a translational drive mechanism is proposed to drive the side sealing plate to slide and realize the on / off control of the side passage. However, during the process of driving the rotating seat to rotate and drive the side sealing plate to slide, the distance between the rotating seat and the side sealing plate will change when the rotating seat rotates. The original telescopic connection structure is prone to problems such as skew, jamming and unstable connection. It is also prone to motion interference with the side sealing plate, making it impossible to smoothly drive the side sealing plate to complete the sliding opening and closing action, and unable to stably realize the on / off control of the side passage.

[0076] For this, please refer to Figures 7-12 As shown, a rotating guide rod 542 is fixedly installed in the rotating slot 541. The telescopic connector 55 includes a telescopic connecting plate 551 slidably connected to the rotating guide rod 542. A telescopic sliding plate 552 is fixedly installed at one end of the telescopic connecting plate 551. The telescopic sliding plate 552 slides out of the rotating slot 541 and is rotatably connected to the side sealing plate 56. A connecting spring 543 is sleeved on the outer periphery of the rotating guide rod 542. One end of the connecting spring 543 is fixedly connected to the telescopic connecting plate 551, and the other end is fixedly connected to the inner side wall of the rotating slot 541. The side sealing plate 56 is provided with a sealing plate groove 561 on the side near the driving rotating seat 54 to avoid the rotation of the driving rotating seat 54. A sealing plate pin 562 that is rotatably connected to the telescopic sliding plate 552 is fixedly installed in the sealing plate groove 561.

[0077] Through the above technical solution, the rotating guide rod 542 set in the rotating slot 541 provides a stable sliding guide for the telescopic connector 55, effectively avoiding skewing during the telescopic process. The telescopic connector 55, through the sliding of the telescopic connecting plate 551 on the rotating guide rod 542 and the rotational connection between the telescopic sliding plate 552 and the side sealing plate 56, achieves adaptive adjustment of the distance between the drive rotating seat 54 and the side sealing plate 56 when the drive rotating seat 54 rotates, thus solving the problem of poor telescopic adaptability in the original structure. The connecting spring 543 not only provides buffering during telescopic movement, reducing the possibility of jamming, but also provides auxiliary force during reset, ensuring smooth movement and maintaining connection tension. Furthermore, the sealing plate slot 561 on the side sealing plate 56 provides ample space for the rotation of the drive rotating seat 54, completely eliminating motion interference. The sealing plate pin 562 fixedly set in the sealing plate slot 561 and its rotational connection with the telescopic sliding plate 552 further ensures the stability and smoothness of the transmission process. Overall, this solution significantly improves the stability, reliability, and smoothness of the sliding opening and closing of the side sealing plate 56 driven by the translation drive mechanism, ensuring that the on / off control of the side passage 32 can be carried out accurately and effectively, thereby better realizing the waterproof, dustproof, and heat dissipation functions of the automotive taillight housing.

[0078] In some of the solutions mentioned above in this application, a translation drive mechanism is proposed to drive the side sealing plate to slide, thereby controlling the opening and closing of the side channel, so as to achieve the switching between waterproofing, dustproofing and heat dissipation in conjunction with the heat dissipation conditions. However, in its implementation, the translation drive mechanism requires an additional independent drive component to drive the side sealing plates on both sides to move synchronously. It cannot be linked with the movement of the already set heat dissipation substrate. This not only increases the number of parts and structural complexity of the entire sealing structure and increases the manufacturing cost, but also easily leads to the problem of asynchronous opening and closing of the side channel and the adjustment of the heat dissipation substrate position. It cannot ensure that the opening and closing state of the side channel is accurately matched with the heat dissipation conditions, affecting the waterproofing, dustproofing and heat dissipation effect of the entire structure.

[0079] For this, please refer to Figures 7-12As shown, a drive groove is provided on the upper end of the side passage groove 32 on the side wall of the taillight housing 3. A sealing lug 31 for sealing the drive groove is provided on the outer side wall of the taillight housing 3 at the position of the drive groove. A drive gear 52 is fixedly installed in the drive groove through the connecting shaft 53. A drive rack 51 that meshes with multiple sets of drive gears 52 is slidably connected to the upper end of the upper guide rail 34. A rack guide rod 511 is fixedly provided on the upper end of the drive rack 51. A limiting guide rail 35 that slides with the rack guide rod 511 is fixedly provided on the inner top of the taillight housing 3. Both sides of the heat dissipation base plate 6 are provided with a drive gear 52. The linkage rod 61, which is fixedly connected to the moving rack 51, moves synchronously when the heat dissipation base plate 6 is driven by the sealing baffle 7, thereby driving the drive rack 51 to move synchronously and driving the rotation of multiple sets of drive rotating seats 54. This enables the control of the opening and closing of the side passage 32 and the control of waterproofing and dustproofing inside the box. When the temperature inside the box is too high, the side passage 32 is opened for heat dissipation. When it rains or the vehicle drives on a dusty dirt road, the side passage 32 is blocked. At this time, the cooling fan 76 dissipates heat inside the box, and rain and dust are detected by the vehicle's sensors.

[0080] Specifically, the drive groove on the side wall of the taillight housing 3 is an opening or recess reserved to accommodate transmission components. Located at the upper end of the side passage groove 32, it aims to provide installation space for the connecting shaft 53 and its subsequent drive gear 52, allowing it to extend into the housing and connect to the external transmission mechanism, while avoiding interference with the normal opening and closing function of the side passage groove 32. This drive groove can be a hole penetrating the side wall of the housing or a groove structure that only recesses into the housing. A sealing lug 31 for sealing the drive groove is provided on the outer side wall of the taillight housing 3 at the location of the drive groove. This sealing lug 31 is a protruding structure or cover on the outer side wall of the taillight housing 3 corresponding to the location of the drive groove. Its main function is to cover and seal the drive groove, preventing external rainwater, dust, and other impurities from entering the interior of the taillight housing 3 through the drive groove, thereby ensuring the airtightness and cleanliness of the housing interior. The sealing lug 31 can be made of an elastic material and achieve a seal by compression or fitting; or it can be made of a rigid material and achieve a seal by using a sealing gasket or sealant.

[0081] A drive gear 52 is fixedly mounted on the connecting shaft 53, which extends into the drive groove. The connecting shaft 53 is a key component in the translation drive mechanism; one end is rotatably connected to the drive rotating base 54, and the other end extends into the drive groove. The drive gear 52 is a gear fixedly mounted on the portion of the connecting shaft 53 that extends into the drive groove. The function of the drive gear 52 is to convert the linear or rotary motion of the external transmission mechanism (such as the drive rack 51) into the rotary motion of the connecting shaft 53, thereby driving the drive rotating base 54 to rotate, ultimately achieving the sliding of the side sealing plate 56. The drive gear 52 can be of various forms, such as a spur gear, helical gear, or worm gear; the specific choice depends on transmission efficiency, space constraints, and noise requirements.

[0082] A drive rack 51, which meshes with multiple sets of drive gears 52, is slidably connected to the upper end of the upper guide rail 34. The drive rack 51 is a linear motion component with a toothed structure; its tooth profile matches the tooth profile of the drive gears 52, enabling it to mesh with multiple sets of drive gears 52 simultaneously. The drive rack 51 is slidably connected to the upper end of the upper guide rail 34, ensuring it maintains a stable position and orientation during sliding. Its main function is to convert the linear movement of the heat sink 6 into the synchronous rotation of the drive gears 52, thereby achieving synchronous control of multiple side through slots 32. The drive rack 51 can be made of metal or high-strength engineering plastic, and its length and number of teeth are designed according to the number and spacing of the drive gears 52 to be driven.

[0083] A rack guide rod 511 is fixedly mounted on the upper end of the drive rack 51. The rack guide rod 511 is a rod-shaped structure fixed to the upper end of the drive rack 51. Its main function is to cooperate with the limiting guide rail 35 to provide precise sliding guidance and limiting for the drive rack 51, preventing the drive rack 51 from deviating, tilting, or disengaging from the drive gear 52 during movement, thereby ensuring the stability and reliability of the transmission system. The rack guide rod 511 can be a rod with a circular cross-section, or a rod with a square or other irregular cross-section, to adapt to different limiting guide rail designs. A limiting guide rail 35 is fixedly mounted on the inner top of the taillight housing 3, which slides with the rack guide rod 511. The limiting guide rail 35 is a groove-shaped or rod-shaped structure fixed on the inner top of the taillight housing 3, and its internal shape matches the external shape of the rack guide rod 511, allowing the rack guide rod 511 to slide inside it. The limiting guide rail 35 and the rack guide rod 511 together form a linear guide mechanism to ensure that the drive rack 51 moves smoothly and accurately on the preset path, avoiding jamming or misalignment during transmission. The limiting guide rail 35 can adopt a U-shaped groove, V-shaped groove or T-shaped groove structure, and its material is usually similar to that of the taillight housing 3 to ensure structural strength and durability.

[0084] Both sides of the heat dissipation base plate 6 are provided with linkage rods 61 that are fixedly connected to the drive rack 51. The linkage rod 61 is a structural component connecting the heat dissipation base plate 6 and the drive rack 51. One end of the linkage rod is fixedly connected to both sides of the heat dissipation base plate 6, and the other end is fixedly connected to the drive rack 51. The function of the linkage rod 61 is to transmit the linear movement force of the heat dissipation base plate 6 to the drive rack 51, thereby realizing the mechanical linkage between the heat dissipation base plate 6 and the drive rack 51. The linkage rod 61 can be a rigid rod, a connecting rod, or a plate structure. Its length and connection method must ensure that the drive rack 51 can slide synchronously and accurately when the heat dissipation base plate 6 moves.

[0085] Through the above technical solution, this application mechanically links the on / off control of the side passage 32 with the movement of the heat dissipation substrate 6, effectively solving the problems of the need for additional independent driving components and asynchronous movements in the translation drive mechanism. Specifically, when the heat dissipation substrate 6 is adjusted in position under the drive of the sealing baffle 7, it directly drives the drive rack 51 to slide through the linkage rod 61. The sliding of the drive rack 51 simultaneously drives multiple sets of drive gears 52 to rotate, thereby synchronously driving the connecting shaft 53 and the drive rotating seat 54, ultimately achieving synchronous sliding of the side sealing plates 56 on both sides, thus precisely controlling the on / off state of the side passage 32. This linkage design makes the on / off state of the side passage 32 completely synchronized with the position adjustment of the heat dissipation substrate 6, eliminating the need for an additional independent drive source, significantly simplifying the number of parts and structural complexity of the entire sealing structure, and reducing manufacturing costs. At the same time, since it is a mechanical linkage, it avoids the asynchronous movement problems that may be caused by an independent drive system, ensuring accurate matching between the on / off state of the side passage 32 and the current heat dissipation conditions. For example, when the vehicle's sensors detect that the internal temperature of the housing is too high and requires enhanced heat dissipation, the heat dissipation base plate 6 moves to the position where heat dissipation is activated, and the side passage 32 simultaneously opens to introduce external air for efficient heat dissipation. Conversely, when it rains or the vehicle is driving in a dusty environment and requires waterproofing and dustproofing, the heat dissipation base plate 6 moves to the sealed position, and the side passage 32 simultaneously seals, effectively preventing moisture and dust from entering. In this case, internal heat dissipation is handled by the cooling fan 76. In addition, the design of the drive groove and sealing lug 31 on the side wall of the taillight housing 3 provides installation space for the connecting shaft 53 and the drive gear 52, and ensures the sealing of the drive groove to prevent external impurities from entering. The meshing of the drive rack 51 with multiple sets of drive gears 52 ensures the synchronous operation of all side passages 32, avoiding the problem of uncoordinated operation on one side. The cooperation between the rack guide rod 511 and the limiting guide rail 35 further improves the stability and reliability of the drive rack 51 during sliding, preventing it from misaligning and disengaging. Overall, this solution achieves a harmonious balance between waterproofing, dustproofing, and heat dissipation through ingenious mechanical linkage design, thereby improving the operational stability, reliability, and environmental adaptability of the automotive taillight housing sealing structure.

[0086] The following example will provide a more detailed explanation of the above technical solution: On a hot summer day, a car is driving on a dry road. The taillights have been on for an extended period, causing their internal temperature to gradually rise. The vehicle's sensor system detects the high ambient temperature and the absence of rain or dust, determining that cooling is necessary.

[0087] At this time, the control system sends a command to the electromagnet 79 to energize it and generate a repulsive force with the fixed magnet 78. Under the action of the repulsive force, the fixed magnet 78 drives the linkage pin 77 to slide away from the lampshade housing 1. Since the other end of the linkage pin 77 is fixedly connected to the heat dissipation base plate 6, the heat dissipation base plate 6 also slides away from the lampshade housing 1.

[0088] When the heat dissipation substrate 6 slides, the through-hole insert 63 on the side near the lamp housing 1 disengages from the bottom plate through-hole 14 on the lamp housing base plate 13, allowing the lamp body cavity and heat dissipation cavity inside the lamp housing 1 to communicate with the inner cavity of the taillight box 3. At the same time, the sliding of the heat dissipation substrate 6 drives the through-hole plug 73 to slide along the plug pin 72 via the plug connecting plate 74, causing the through-hole plug 73 to disengage from the baffle through-hole 71 on the sealing baffle 7, thereby opening the baffle through-hole 71.

[0089] Furthermore, the linkage rods 61 on both sides of the heat dissipation base plate 6 are fixedly connected to the drive rack 51 at the upper end of the upper guide rail 34. When the heat dissipation base plate 6 slides, the linkage rods 61 synchronously drive the drive rack 51 to move. The drive rack 51 meshes with multiple drive gears 52, which are mounted on the connecting shaft 53, which is rotatably connected to the side wall of the side passage groove 32. The rotation of the drive gears 52 drives the side sealing plate 56 to slide within the lower guide rail 33 and the upper guide rail 34 through the translation drive mechanism (including the drive rotating seat 54, telescopic connecting piece 55, etc.), causing the side sealing plate 56 to disengage from the side passage groove 32, thereby opening the side passage grooves 32 on both sides of the taillight housing 3.

[0090] At this point, a heat dissipation channel is formed between the interior of the taillight housing 3 and the external environment. External air enters the taillight housing 3 through the rear cover through-slot 41 on the rear cover 4, passes through the baffle through-hole 71 on the sealing baffle 7, and then enters the heat dissipation cavity of the lamp housing 1 through the bottom plate through-hole 14 on the lamp housing base plate 13. Inside the heat dissipation cavity, air flows over the heat dissipation pad 12, carrying away the heat generated by the taillight 2. The heated air then exits the taillight housing 3 through the side through-slot 32, achieving effective heat dissipation for the taillight 2 and avoiding the problem of reduced lamp life due to poor heat dissipation in existing sealing structures. The heat dissipation fins 62 on the side of the heat dissipation base plate 6 away from the lamp housing 1 further enhance the heat dissipation effect.

[0091] When a car travels on a rainy or dusty road, its sensor system detects the rain or dust and determines that sealing protection is necessary. At this time, the control system sends a command to the electromagnet 79, energizing it and causing it to attract the fixed magnet 78. Under the action of the attraction, the fixed magnet 78 drives the linkage rod 77 to slide closer to the lamp housing 1, thereby causing the heat dissipation base plate 6 to also slide closer to the lamp housing 1.

[0092] The sliding of the heat dissipation substrate 6 causes its through-hole insert 63 to insert into and block the bottom plate through-hole 14 on the lamp cover base plate 13, cutting off the communication between the lamp cover housing 1 and the interior of the taillight box 3. At the same time, the through-hole plug 73, driven by the linkage pin 77, slides along the plug pin 72 and blocks the baffle through-hole 71 on the sealing baffle 7.

[0093] In contrast to the heat dissipation process, the sliding of the heat dissipation base plate 6 drives the drive rack 51 to move in the opposite direction via the linkage rod 61, and the drive rack 51 drives the drive gear 52 to rotate in the opposite direction. The drive gear 52 drives the side sealing plate 56 to slide through the translation drive mechanism, so that the side sealing plate 56 completely covers and blocks the side through groove 32.

[0094] Through the aforementioned linkage mechanism, a sealed space is formed inside the entire taillight housing, effectively preventing rainwater and dust from entering and solving the problem that existing open heat dissipation structures are susceptible to rainwater and dust affecting the lifespan of the lamps. In the sealed state, the cooling fan 76 on the sealing baffle 7 activates, forcibly blowing air to cool the taillight 2, ensuring that the lamps still receive necessary heat dissipation even when external ventilation is unsuitable, further guaranteeing the lifespan and reliability of the taillight 2. This integrated waterproof, dustproof, and heat dissipation control scheme achieves optimal taillight operation under various conditions.

[0095] The foregoing has provided a detailed description of one embodiment of the present invention, but this description is merely a preferred embodiment and should not be construed as limiting the scope of the invention. All equivalent variations and modifications made within the scope of the claims of this invention should still fall within the patent coverage of this invention.

Claims

1. A waterproof and dustproof integrated sealing structure for automotive taillight housing, characterized in that, The device includes a lamp housing (1) and a taillight housing (3) fixedly connected to the lamp housing (1). A lamp base plate (13) is provided at the connection between the lamp housing (1) and the taillight housing (3). A lamp partition plate (11) is fixedly provided on both the upper and lower parts of the lamp base plate (13). The lamp partition plate (11) divides the interior of the lamp housing (1) into a lamp body cavity and a heat dissipation cavity. A car taillight (2) is fixedly installed in the lamp body cavity. Several heat dissipation pads (12) are provided in the heat dissipation cavity. A sealing baffle (7) is fixedly installed inside the taillight housing (3). A heat dissipation substrate (6) is slidably installed between the sealing baffle (7) and the lamp cover base plate (13). Several linkage pins (77) are slidably connected through the sealing baffle (7). One end of the linkage pin (77) is fixedly connected to the heat dissipation substrate (6), and the other end of the linkage pin (77) is fixedly connected to a fixed magnet (78). An electromagnet (79) that cooperates with the fixed magnet (78) is fixedly installed on the sealing baffle (7). When the electromagnet (79) is energized, it has magnetism and generates attraction or repulsion with the fixed magnet (78) to adjust the position of the heat dissipation substrate (6). The taillight housing (3) has side passage grooves (32) on both sides, and a sealing on / off assembly (5) for controlling its opening and closing is provided at the side passage grooves (32).

2. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 1, characterized in that, The taillight housing (3) has a rear cover (4) installed at the end away from the taillight (2). The rear cover (4) has several rear cover grooves (41) that communicate with the interior of the taillight housing (3).

3. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 1, characterized in that, The lampshade base plate (13) is provided with several base plate through holes (14) on both the upper and lower parts. The base plate through holes (14) connect the inner cavity of the lampshade housing (1) and the taillight box (3). The heat dissipation base plate (6) is provided with several through hole plugs (63) for sealing the base plate through holes (14) on the side near the lampshade housing (1).

4. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 3, characterized in that, The heat dissipation substrate (6) has several heat dissipation fins (62) on the side away from the lamp cover housing (1).

5. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 1, characterized in that, The sealing baffle (7) is provided with a plurality of baffle through holes (71), and the sealing baffle (7) is provided with a plurality of blocking pins (72) corresponding to the positions of the baffle through holes (71). A through hole blocking block (73) for controlling the opening and closing of the baffle through hole (71) is slidably connected to the blocking pin (72), and the through hole blocking block (73) is connected to the linkage pin (77) through the blocking block connecting plate (74). The sliding of the linkage pin (77) drives the through hole blocking block (73) to slide along the blocking pin (72), thereby controlling the opening and closing of the baffle through hole (71).

6. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 5, characterized in that, A fan bracket (75) is fixedly installed on the side of the sealing baffle (7) away from the through hole block (73), and a cooling fan (76) for blowing air to cool the car taillight (2) is fixedly installed on the fan bracket (75).

7. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 1, characterized in that, The sealing and switching assembly (5) includes a side sealing plate (56) slidably disposed on the inner side wall of the taillight housing (3), and a lower guide rail (33) for sliding limit of the side sealing plate (56) is provided at the bottom of the side wall of the taillight housing (3), an upper guide rail (34) for sliding limit of the upper part of the side sealing plate (56) is provided at the top of the side wall of the taillight housing (3), and a translation drive mechanism for driving the side sealing plate (56) to slide is rotatably installed in the side through groove (32).

8. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 7, characterized in that, The translation drive mechanism includes a drive rotary seat (54), and the upper and lower ends of the drive rotary seat (54) are provided with connecting shafts (53) that are rotatably connected to the side wall of the side through groove (32). The drive rotary seat (54) is provided with a rotary seat groove (541), and a telescopic connector (55) is slidably connected at the rotary seat groove (541). The end of the telescopic connector (55) away from the drive rotary seat (54) is rotatably connected to the side sealing plate (56).

9. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 8, characterized in that, A rotating guide rod (542) is fixedly installed in the rotating slot (541). The telescopic connector (55) includes a telescopic connecting plate (551) slidably connected to the rotating guide rod (542). A telescopic sliding plate (552) is fixedly installed at one end of the telescopic connecting plate (551). The telescopic sliding plate (552) slides out of the rotating slot (541) and is rotatably connected to the side sealing plate (56). A connecting spring (543) is sleeved on the outer periphery of the rotating guide rod (542). One end of the connecting spring (543) is fixedly connected to the telescopic connecting plate (551), and the other end is fixedly connected to the inner side wall of the rotating slot (541). A sealing plate groove (561) for avoiding the rotation of the driving rotating seat (54) is provided on the side of the side sealing plate (56) near the driving rotating seat (54). A sealing plate pin (562) is fixedly installed in the sealing plate groove (561) and is rotatably connected to the telescopic sliding plate (552).

10. The waterproof and dustproof integrated automotive taillight housing sealing structure according to claim 9, characterized in that, The taillight housing (3) has a drive groove at the upper end of the side passage groove (32) on its side wall. A sealing lug (31) for sealing the drive groove is provided on the outer side wall of the taillight housing (3) at the drive groove position. A drive gear (52) is fixedly installed in the drive groove via the connecting shaft (53). A drive rack (51) that meshes with multiple sets of drive gears (52) is slidably connected to the upper end of the upper guide rail (34). A rack guide rod (511) is fixedly provided at the upper end of the drive rack (51). A limiting guide rail (35) that slides with the rack guide rod (511) is fixedly provided on the inner top of the taillight housing (3). Both sides of the heat dissipation substrate (6) are provided with linkage support rods (61) that are fixedly connected to the drive rack (51). When the heat dissipation substrate (6) moves under the drive of the sealing baffle (7), it synchronously drives the drive rack (51) to move to realize the synchronous drive of multiple sets of drive rotating seats (54) to rotate, thereby realizing the on / off control of (32) and realizing the waterproof and dustproof control of the inside of the box. When the temperature inside the box is too high, (32) is turned on for heat dissipation. When it rains or the vehicle drives on a dusty dirt road, (32) is in a blocked state. At this time, heat dissipation is carried out inside the box through (76), and rain and dust are sensed by the car's sensors.

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