Dry air vent pipe for demisting car lamp

Abstract

The utility model discloses a dry air vent pipe for demisting an automobile lamp, which comprises a rubber vent pipe provided with an air inlet port and an air outlet port, the middle section of the rubber vent pipe is provided with an accommodating cavity, the air inlet port is connected with an air inlet of an automobile exhaust pipe, and the air outlet port is connected with an air vent on the rear side of an automobile lamp shell; the PTFE waterproof breathable films are arranged at the two ends of the containing cavity; and the drying agent is arranged in the accommodating cavity. According to the utility model, the air inlet amount and the ventilation amount inside the lamp are increased through the rubber ventilation pipe, so that the high temperature inside the lamp is reduced, the service life of the lamp is prolonged, and the driving safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamp drying, and in particular relates to a dry air vent pipe for defogging vehicle lamps. Background Art

[0002] A typical headlight typically consists of a base, with a light source inserted and secured inside the base from the rear. To prevent water droplets, moisture, or dust from penetrating and affecting the lighting effect or damaging the light source, headlights must be waterproof and dustproof. Furthermore, when the user activates the headlight to emit light, the heat generated by the light source will cause the overall temperature of the headlight to rise with time. Therefore, the headlight must maintain good air convection as a heat dissipation mechanism to prevent the high heat generated by prolonged lighting from accumulating inside the headlight. Otherwise, the lifespan of the light source will be further shortened and the plastic material used in the headlight may deteriorate or deform.

[0003] In other words, headlights must simultaneously maintain heat dissipation, waterproofing, and moisture resistance. Consequently, some manufacturers have developed vent covers for headlights. However, these vent covers have limited air intake and low internal drying efficiency, making them ineffective in preventing fogging. Consequently, there is an urgent need for a headlight defogging and drying device that can increase air intake and ventilation within the lamp, thereby reducing internal heat buildup, extending lamp life, and improving driving safety. Utility Model Content

[0004] In view of this, the technical problem to be solved by the present invention is to provide a dry air vent tube for defogging of car lights, which is used to avoid the problems of poor moisture absorption and air permeability of the rear cover of the car lights, easy fogging, troublesome installation and replacement, high cost, and short service life of the lamps.

[0005] In order to solve the above technical problems, the utility model discloses a dry air ventilation tube for defogging vehicle lamps, comprising:

[0006] A rubber vent tube having an air inlet port and an air outlet port, a cavity being provided in the middle section, the air inlet port being connected to the air inlet of the automobile exhaust pipe, and the air outlet port being connected to the air vent on the rear side of the lamp housing;

[0007] PTFE waterproof and breathable membranes are provided at both ends of the cavity;

[0008] Desiccant built into the chamber.

[0009] According to one embodiment of the present invention, the diameter of the cavity is larger than the diameters of both ends of the rubber breathable tube.

[0010] According to one embodiment of the present invention, the air inlet port faces downward, and has a baffle portion extending downward at the rear end.

[0011] According to one embodiment of the present invention, the front end of the air inlet port is in an expanded hole shape.

[0012] According to one embodiment of the present invention, the outer side of the air outlet port is covered with a heat shrink tube.

[0013] Compared with the prior art, the present invention can achieve the following technical effects:

[0014] One end of the rubber breather tube is connected to the exhaust hole below the lamp, and the other end is installed on the air intake grille of the car's front bumper. Because the air intake port has a baffle structure design, when the vehicle is moving forward, wind will blow towards the air intake port. At the same time, the rear baffle protrudes forward, and the wind will blow into the rubber breather tube with greater force. Because the blown air contains a certain amount of moisture, the moisture will be absorbed when it passes through the desiccant particle area. The remaining dry air will enter the interior of the lamp, ensuring the lowest humidity inside the lamp, thus solving the problem of lamp fogging.

[0015] At the same time, due to the structural design of the rubber vent tube, the air intake and ventilation volume inside the lamp are increased, thereby reducing the high temperature problem inside the lamp, extending the life of the lamp and increasing driving safety.

[0016] Of course, any product implementing the present utility model does not necessarily need to achieve all of the above-mentioned technical effects at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0018] Figure 1 This is a schematic diagram of a dry air vent pipe for defogging a headlight according to an embodiment of the present utility model;

[0019] Figure 2 The utility model is a schematic diagram of the installation of a dry air ventilation pipe for defogging a vehicle lamp according to an embodiment of the present invention.

[0020] Figure ID

[0021] The rubber ventilation tube 10 , the air inlet port 11 , the air outlet port 12 , the PTFE waterproof breathable membrane 20 , the desiccant 30 , and the baffle portion 40 . DETAILED DESCRIPTION

[0022] The following will describe the implementation of the present invention in detail with reference to the accompanying drawings and examples, so that the implementation process of how the present invention applies technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0023] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of a dry air vent pipe for defogging a headlight according to an embodiment of the present utility model; Figure 2 The utility model is a schematic diagram of the installation of a dry air ventilation pipe for defogging a vehicle lamp according to an embodiment of the present invention.

[0024] As shown in the figure, a dry air ventilation tube for defogging a headlight comprises: a rubber ventilation tube 10 having an air inlet port 11 and an air outlet port 12, a cavity provided in the middle section, the air inlet port 11 connected to the air inlet of the vehicle exhaust pipe, and the air outlet port 12 connected to the air vent on the rear side of the headlight housing; a PTFE waterproof breathable membrane 20 provided at both ends of the cavity; and a desiccant 30 built into the cavity.

[0025] In one embodiment of the present invention, the rubber vent tube 10 is a hollow rubber tube with an inlet port 11 and an outlet port 12 at its front and rear ends, respectively. The inlet port 11 connects to the air inlet of the vehicle's exhaust pipe. It should be noted that the rear end of the vehicle's exhaust pipe is located at the rear of the vehicle, while the front end is integrated into the front end, facing the front bumper grille. The inlet port 11 of the present invention forms a branch, connected to the front end of the exhaust pipe's air inlet, for introducing air from the vehicle. The outlet port 12 connects to a waterproof vent on the rear side of the headlight housing. The central cavity houses a desiccant 30, and the front and rear ends of the cavity are separated by a PTFE waterproof and breathable membrane 20.

[0026] The air intake port 11 faces downward, and the rear end has a downwardly extending baffle portion 40. When the vehicle is moving forward, wind blows toward the air intake port 12. Simultaneously, the rear baffle portion 40 protrudes forward, increasing the force of the wind into the rubber vent tube 10. Because the incoming air contains a certain amount of moisture, the moisture is absorbed as it passes through the desiccant 30 particles. The remaining dry air then enters the lamp, ensuring minimal humidity inside the lamp and thus resolving the problem of lamp fogging. Furthermore, the structural design of the rubber vent tube 10, including the baffle portion 40, increases air intake and ventilation within the lamp, thereby reducing the risk of high temperatures within the lamp, extending lamp life, and enhancing driving safety.

[0027] In a preferred embodiment, the diameter of the cavity is larger than the diameters of both ends of the rubber breathable tube 10 to ensure sufficient storage of the desiccant 30. The desiccant 30 particles can be made of materials such as magnesium chloride, calcium chloride, silica gel, and montmorillonite.

[0028] In addition, the front end of the air inlet port 11 is in an expanded hole shape, which can facilitate large-volume air intake and improve drying efficiency.

[0029] The outside of the air outlet port 12 is covered with a heat shrink tube to improve the sealing performance.

[0030] In summary, the present invention increases the air intake volume and the ventilation volume inside the lamp, thereby reducing the high temperature problem inside the lamp, extending the life of the lamp, and increasing driving safety.

[0031] The above description shows and describes several preferred embodiments of the present invention. However, as previously mentioned, it should be understood that the present invention is not limited to the form disclosed herein and should not be construed as excluding other embodiments. Instead, the present invention can be used in various other combinations, modifications, and environments and can be modified within the scope of the present invention as taught herein or through the techniques or knowledge in the relevant field. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention are intended to be protected by the claims appended hereto.

Claims

1. A dry air vent tube for defogging vehicle lamps, characterized in that: include: A rubber air vent tube having an air inlet port and an air outlet port, with a cavity provided in the middle section, the air inlet port being connected to the air inlet of the automobile exhaust pipe, and the air outlet port being connected to the air vent on the rear side of the lamp housing; PTFE waterproof and breathable membranes are provided at both ends of the cavity; A desiccant is built into the cavity.

2. The dry air ventilation tube for defogging vehicle lamps according to claim 1, characterized in that: The diameter of the cavity is larger than the diameters at both ends of the rubber breathable tube.

3. The dry air ventilation tube for defogging vehicle lamps according to claim 1, characterized in that: The air inlet port faces downward, and the rear end has a baffle portion extending downward.

4. The dry air ventilation tube for defogging a vehicle lamp according to claim 1, characterized in that: The front end of the air inlet port is in an expanded hole shape.

5. The dry air ventilation tube for defogging a vehicle lamp according to claim 1, characterized in that: The outer side of the air outlet port is covered with a heat shrink tube.

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