Reversible moisture absorption module assembly for car lamp

Abstract

The reversible moisture absorption module assembly comprises a shell, and the shell is provided with a barrel cavity part located at the front end and a communicated cover cap part located at the rear end. The screens are arranged at the two ends of the barrel cavity part in a sealed mode, and drying agents are arranged in the barrel cavity part; the two-way pressure release valve component is installed in the cap part and comprises a support plate fixed to the cap part in a sealed mode, and a gap is formed between the support plate and the screen; the two positioning holes are formed in the support plate, and two one-way pressure release valves in different directions are installed in the positioning holes respectively; the breathable film is arranged at the rear end of the cap part. According to the utility model, the reversible moisture absorption module is arranged above the lamp light source, so that moisture in the lamp can be absorbed by the drying agent; when the lamp is turned on, the temperature generated by the light source evaporates the moisture absorbed by the drying agent; due to the fact that gaps exist among the drying agents made of the silica gel particles, when heat energy is converted into pressure, moisture is exhausted to the outside from the inside of the reversible moisture absorption module, the fogging problem of the lamp is solved, the service life of the lamp is prolonged, and driving safety is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicle lamp rear covers, and in particular relates to a reversible moisture absorption module component for 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, car lights must simultaneously address heat dissipation, waterproofing, and moisture-proofing. Consequently, some manufacturers have developed vent covers for car lights, such as U.S. Patent No. 6,364,924. The vent cover comprises a hollow elastic cylinder and a U-shaped cover. The outer circumference of the elastic cylinder is provided with several protrusions. The user must first insert the elastic cylinder into the cover. The protrusions on the elastic cylinder then abut against the inner wall of the cover, forming an air passage. The user then places the vent cover over the air passage, essentially inserting the air passage into the cylinder to complete the assembly.

[0004] Although the aforementioned breathable cover structure can provide heat dissipation, waterproofing and breathability, it cannot prevent moisture from entering or balance internal moisture. In addition, the two-piece assembly structure consumes additional assembly time and cost, and still needs further improvement. Utility Model Content

[0005] In view of this, the technical problem to be solved by the present invention is to provide a reversible moisture absorption module assembly for car lights, which is used to avoid the problems of poor moisture absorption and air permeability of the rear cover of the car lights, difficult installation and replacement, high cost, and short service life of the lamps.

[0006] In order to solve the above technical problems, the utility model discloses a reversible moisture absorption module assembly for a vehicle lamp, comprising:

[0007] The shell has a cylindrical cavity portion at the front end and a conductive cap portion at the rear end;

[0008] Screens are sealed at both ends of the cylinder cavity, and a desiccant is provided in the cylinder cavity;

[0009] A two-way pressure relief valve component installed inside the cap portion. The two-way pressure relief valve component includes a support plate hermetically fixed to the cap portion, and there is a gap between the support plate and the screen; two positioning holes provided on the support plate, and two one-way pressure relief valves in different directions are respectively installed in the positioning holes.

[0010] A breathable membrane provided at the rear end of the cap portion.

[0011] According to an embodiment of the present invention, a raised annular buckle is provided inside the cap portion, and the support plate is hermetically fixed to the annular buckle.

[0012] According to an embodiment of the present invention, a breathable ring hole is provided on the outer circle of the positioning hole. The one-way pressure relief valve is made of EPDM and is in an umbrella shape, having a rod portion that snaps into the positioning hole and an umbrella portion that presses on the breathable ring hole. The umbrella portion has an inner concave arc facing the breathable ring hole.

[0013] According to an embodiment of the present invention, the breathable membrane is set as a PTFE membrane; the desiccant is set as silica gel particles.

[0014] According to an embodiment of the present invention, the housing is installed in the waterproof breathable hole of the lamp housing by a buckle, and a sealing ring is provided around it.

[0015] Compared with the prior art, the present invention can obtain the following technical effects:

[0016] When there is a pressure difference between the inside and outside of the lamp, the two-way pressure relief valve component can play a role in breathable pressure relief; when the internal and external pressures are balanced, it can block moisture from entering the inside of the lamp.

[0017] The desiccant made of silica gel particles can absorb moisture. At the same time, when it is subjected to a certain temperature, the moisture inhaled into the silica gel particles will be evaporated, and then the moisture absorption and moisture release can be repeated.

[0018] By installing the reversible moisture absorption module above the lamp light source, the moisture inside the lamp will be absorbed by the desiccant; when the lamp is lit, the temperature generated by the light source will evaporate the moisture absorbed by the desiccant; since there are gaps between the silica gel particle-made desiccants, when heat energy is converted into pressure, the moisture will be discharged from the inside of the reversible moisture absorption module to the outside, thereby solving the problem of lamp fogging, prolonging the lamp life, and improving driving safety.

[0019] Of course, it is not necessarily required that any product implementing the present invention simultaneously achieves all the above-mentioned technical effects. Brief Description of the Drawings

[0020] The accompanying drawings described herein are used to provide a further understanding of the present utility model and form a part of the present utility model. The schematic embodiments of the present utility model and their descriptions are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0021] Figure 1 is a schematic installation diagram of a reversible moisture absorption module assembly for vehicle lights according to an embodiment of the present utility model;

[0022] Figure 2 is a schematic diagram of a reversible moisture absorption module assembly for vehicle lights according to an embodiment of the present utility model;

[0023] Figure 3 is a schematic diagram of the air intake of a two-way pressure relief valve component according to an embodiment of the present utility model;

[0024] Figure 4 is a schematic diagram of the air outlet of a two-way pressure relief valve component according to an embodiment of the present utility model.

[0025] Reference numerals in the drawings

[0026] housing 10, barrel cavity part 11, cap part 12, screen 20, desiccant 30, two-way pressure relief valve component 40, support plate 41, positioning hole 42, one-way pressure relief valve 43, breathable ring hole 44, breathable film 50, annular buckle 60, sealing ring 70. Detailed implementation manners

[0027] The following will describe in detail the implementation manners of the present utility model in conjunction with the accompanying drawings and embodiments, so as to fully understand how the present utility model uses technical means to solve technical problems and achieve the realization process of technical effects and implement accordingly.

[0028] Please refer to Figures 1 to 4 , Figure 1 is a schematic installation diagram of a reversible moisture absorption module assembly for vehicle lights according to an embodiment of the present utility model; Figure 2 is a schematic diagram of a reversible moisture absorption module assembly for vehicle lights according to an embodiment of the present utility model; Figure 3 is a schematic diagram of the air intake of a two-way pressure relief valve component according to an embodiment of the present utility model; Figure 4 is a schematic diagram of the air outlet of a two-way pressure relief valve component according to an embodiment of the present utility model.

[0029] As shown in the figure, a reversible moisture absorption module assembly for vehicle lights includes:

[0030] The housing 10 has a cylindrical cavity portion 11 at the front end and a cap portion 12 at the rear end that is conductively connected; the screen meshes 20 are sealed at both ends of the cylindrical cavity portion 11, and a desiccant 30 is provided inside the cylindrical cavity portion 11; a two-way pressure relief valve member 40 is installed inside the cap portion 12. The two-way pressure relief valve member 40 includes a support plate 41 that is hermetically fixed to the cap portion 12, and there is a gap between the support plate 41 and the screen meshes 20; two positioning holes 42 are provided on the support plate 41, and two one-way pressure relief valves 43 in different directions are respectively installed in the positioning holes 42; a breathable film 50 is provided at the rear end of the cap portion 12.

[0031] In an embodiment of the present invention, the housing 10 is installed on the waterproof and breathable hole of the headlight housing through a buckle, and a sealing ring 70 is provided around it to maintain the seal. Its front end has a protruding cylindrical cavity portion 11, and the rear end is provided with a cap portion 12. The cylindrical cavity portion 11 extends into the headlight to accommodate the desiccant 30. At the same time, both ends are conductively connected and sealed by the screen meshes 20, allowing air and moisture to pass through. The cap portion 12 is installed at the rear end of the cylindrical cavity portion 11 through the two-way pressure relief valve member 40 to achieve balanced pressure relief inside and outside the headlight. At the same time, a breathable film 50 is further welded on its outer side, which can be set as a PTFE film to achieve waterproof sealing during the breathable process. The desiccant 30 is made of silica gel particles, which can absorb moisture. At the same time, when it is at a certain temperature, the moisture inhaled into the silica gel particles will be evaporated, and then the process of absorbing and releasing moisture can be repeated.

[0032] The cap portion 12 is provided with a circular buckle 60 around it for fixing the support plate 41. The support plate 41 is provided with two positioning holes 42, one above the other, and the one-way pressure relief valves 43 are respectively installed in the positioning holes 42.

[0033] Further, a breathable ring hole 44 is provided on the outer circle of the positioning hole 42. The one-way pressure relief valve 43 is made of EPDM and is in an umbrella shape, having a rod portion that snaps into the positioning hole 42 and an umbrella portion that presses against the breathable ring hole 44. The umbrella portion has an inward concave arc facing the breathable ring hole 44. Among them, after the one-way pressure relief valve 43 made of EPDM is inserted into the positioning hole 42, its umbrella portion is flexible and just seals and presses against the breathable ring hole 44. When the lamp is lit and working, pressure is generated inside the lamp, and the pressure opens one of the one-way pressure relief valves 43 of the two-way pressure relief valve member, achieving the function of releasing the pressure inside the lamp; as Figure 3 shown.

[0034] When the lamp goes out after working, at this time, a negative pressure is generated inside the lamp, and the external pressure is high, and air will enter the lamp. At this time, the other one-way pressure relief valve 43 of the two-way pressure relief valve member opens to allow external air to enter the lamp, preventing the lamp from bursting due to excessive pressure difference inside and outside, as Figure 4 shown.

[0035] When the pressure inside and outside the lamp is balanced, the two-way pressure relief valve component is in a completely sealed state, which can block the conduction of external moisture into the lamp. Coupled with the function of the desiccant 30, the moisture inside the lamp can be absorbed, thus solving the problem of lamp fogging, extending the lamp life, and improving driving safety.

[0036] In summary, in the present utility model, by installing the reversible moisture absorption module above the lamp light source, the moisture inside the lamp will be absorbed by the desiccant; when the lamp is lit, the temperature generated by the light source will evaporate the moisture absorbed by the desiccant; due to the gaps between the desiccants made of silica gel particles, when heat energy is converted into pressure, the moisture will be discharged from the inside of the reversible moisture absorption module to the outside, thus solving the problem of lamp fogging, extending the lamp life, and improving driving safety.

[0037] The above description shows and describes several preferred embodiments of the present utility model. However, as mentioned above, it should be understood that the present utility model is not limited to the form disclosed herein, should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications, and environments, and can be changed within the scope of the inventive concept described herein through the above teachings or the technology or knowledge in the relevant field. And any changes and modifications made by those skilled in the art without departing from the spirit and scope of the present utility model shall fall within the protection scope of the appended claims of the present utility model.

Claims

1. A reversible moisture absorption module assembly for a vehicle lamp, characterized in that, Comprising: A housing having a cylindrical cavity portion at the front end and a cap portion at the rear end for conduction; Sieves sealed at both ends of the cylindrical cavity portion, with a desiccant provided inside the cylindrical cavity portion; A two-way pressure relief valve member installed inside the cap portion, the two-way pressure relief valve member including a support plate sealed and fixed to the cap portion, the support plate having a space from the sieve; two positioning holes provided on the support plate, with two one-way pressure relief valves installed in different directions in the positioning holes respectively; A breathable film provided at the rear end of the cap portion.

2. The reversible moisture absorption module assembly for vehicle lamps according to claim 1, characterized in that, Wherein a raised annular buckle is provided on the inner side of the cap portion, and the support plate is sealed and fixed to the annular buckle.

3. The reversible moisture absorption module assembly for a vehicle lamp according to claim 1, characterized in that, Wherein a breathable ring hole is provided on the outer circle of the positioning hole, the one-way pressure relief valve is made of EPDM and is in an umbrella shape, having a rod portion buckled into the positioning hole and an umbrella portion covering the breathable ring hole, and the umbrella portion has an inner concave arc facing the breathable ring hole.

4. The reversible moisture absorption module assembly for vehicle lamps according to claim 1, characterized in that, Wherein the breathable film is set as a PTFE film; the desiccant is set as silica gel particles.

5. The reversible moisture absorption module assembly for vehicle lamps according to claim 1, characterized in that, Wherein the housing is installed on the waterproof breathable hole of the headlight housing through a buckle and is surrounded by a sealing ring.

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