Membrane modules combining graphene carbon thermal conductive sheets and reversible desiccant membranes for automotive headlight defogging and their applications.

Abstract

This invention discloses a membrane assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant film for automotive headlight defogging, and its application. The graphene carbon heat-conducting sheet layer, serving as a base layer, is disposed on the inner wall of the headlight housing and includes a heat-absorbing zone and a heat-conducting zone. The heat-absorbing zone faces the heating element inside the headlight and is used to absorb infrared heat. The heat-conducting zone extends from the heat-absorbing zone to the cold zone prone to fogging, dissipating heat for defogging. The reversible desiccant film layer is disposed in the heat-conducting zone and absorbs the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer to achieve desorption and drying of micro-moisture from the film. The membrane assembly is adhered to the inner wall of the flat and narrow strip headlight housings of split headlights, through-type headlights, and lightsaber-type headlights using double-sided pressure-sensitive adhesive sheets. By applying this invention, the heat generated by the internal electrical components of the headlight is used to achieve a cycle of moisture absorption and desorption of the reversible desiccant film, effectively solving the fogging problem of novel flat and narrow strip headlights. It has advantages such as simple structure and low cost.

Description

TECHNICAL FIELD

[0001] The application relates to the field of automobile lamp defogging, in particular to a film assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant film sheet for automobile lamp defogging and application thereof. BACKGROUND

[0002] With the rapid production of new energy vehicle models, automobile manufacturers continuously launch avant-garde, fashionable and technology-rich vehicle models to meet the needs of consumers. The automobile lamp is the eye of the automobile and also the embodiment of the agility of the automobile. Therefore, the automobile lamp has a new trend of major changes in appearance and structure. The new automobile lamp design trends mainly include the following types: flat and long strip type.

[0003] Split headlamp: this design separates the daytime running light from the headlamp. The daytime running light is usually located in the position of the traditional headlamp, and the headlamp is in the fog lamp position or is integrated with the frameless mesh. The split headlamp design gives people a sense of avant-garde and fashion.

[0004] Through-type headlamp: this design designs the headlamp group into a long strip shape, which penetrates through the entire front end and usually echoes the front face style, showing a unique style. The through-type headlamp not only increases the visual width of the vehicle, but also increases the sense of technology.

[0005] Light sword type headlamp: imitates the shape of a light sword, with an LED as the internal light source. The through-type daytime running light is combined with different light words to create a strong sense of technology, which is difficult to forget at a glance.

[0006] The split headlamp, through-type headlamp and light sword type headlamp have new features of flat and long strip type structure. The air humidity microcirculation in the interior of the headlamp formed by the heat difference of the electrical elements in the headlamp and the air vent holes causes fogging and condensation on the surface of the cold area of the headlamp and the surface of the long strip type cavity. The traditional headlamp defogging method cannot solve the condensation problem, which seriously affects the appearance of the new model and the safety hazard of the light yellow caused by fogging. SUMMARY

[0007] The technical problem solved by the present application is to provide a film assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant film sheet for automobile lamp defogging and application thereof, which can be used in the cycle of headlamp operation and parking to eliminate the fogging phenomenon of new flat and long strip type headlamps such as split headlamps, through-type headlamps and light sword type headlamps.

[0008] To solve the above technical problems, one technical scheme adopted by the present application is to provide a film assembly combining a graphene carbon heat-conducting sheet and a reversible desiccant film sheet for automobile lamp defogging, which comprises:

[0009] The graphene carbon heat-conducting sheet layer is arranged on the inner wall of the vehicle lamp shell as a base layer, and includes a heat-absorbing area and a heat-conducting area; the heat-absorbing area is arranged towards a heat-generating element in the vehicle lamp, and is used for absorbing infrared heat; the heat-conducting area extends from the heat-absorbing area to a cold area prone to fogging, and is used for conducting heat out and defogging.

[0010] The reversible desiccant film layer is arranged in the heat-conducting area, and absorbs heat energy and temperature transmitted by the graphene carbon heat-conducting sheet layer to realize film micro-moisture desorption drying.

[0011] The reversible desiccant film layer includes a support skeleton layer, a functional layer and active fillers; the functional layer is compounded on the surface of the support skeleton layer, and the active fillers are embedded in the support skeleton layer; the reversible desiccant film layer mainly includes an expanded polytetrafluoroethylene film with a microporous structure and a mist absorbent slurry; the mist absorbent slurry is coated into the expanded polytetrafluoroethylene film by using a high-precision surface controllable coating compounding technology; the expanded polytetrafluoroethylene film is the support skeleton layer; the mist absorbent slurry forms the functional layer on the surface of the expanded polytetrafluoroethylene film, and is embedded as the active fillers in the microporous structure.

[0012] In a preferred embodiment of the present application, an ePTFE expanded polytetrafluoroethylene breathable film layer is encapsulated on the surface of the reversible desiccant film layer.

[0013] In a preferred embodiment of the present application, the encapsulation includes a single-side covering cap encapsulation; one side surface of the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer, and the remaining surfaces are connected with the ePTFE expanded polytetrafluoroethylene breathable film layer.

[0014] In a preferred embodiment of the present application, one side surface of the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer through a double-sided pressure-sensitive adhesive sheet.

[0015] In a preferred embodiment of the present application, the encapsulation includes a cladding encapsulation; the ePTFE expanded polytetrafluoroethylene breathable film layer is cladded on the whole surface of the reversible desiccant film layer; and the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer through the ePTFE expanded polytetrafluoroethylene breathable film layer.

[0016] In a preferred embodiment of the present application, the ePTFE expanded polytetrafluoroethylene breathable film layer is connected with the graphene carbon heat-conducting sheet layer through a double-sided pressure-sensitive adhesive sheet.

[0017] In a preferred embodiment of the present application, the thickness of the film assembly is 0-3000 μm.

[0018] To solve the above technical problems, the application adopts another technical solution: to provide an application of a film assembly combined with a graphene carbon heat-conducting sheet and a reversible desiccant film for automobile lamp defogging, characterized in that the film assembly is pasted on the inner wall of a split headlamp, a through headlamp, a light sword headlamp, a flattened and narrow strip type headlamp shell by using double-sided pressure-sensitive adhesive film.

[0019] In a preferred embodiment of the application, the film assembly is also applied in a small space of an intelligent helmet display, a monitoring probe, an image detection, and a laser radar detection sensor.

[0020] In a preferred embodiment of the application, the film assembly is combined with a CMD condensation controller and applied in a headlamp shell.

[0021] The application has the following beneficial effects: the film assembly of the application can reach a moisture absorption rate of more than 140% of its own weight under the condition of 40℃ and 90% RH; and can desorb more than 130% under the condition of 35℃ environment in a saturated absorption state, has long-term reversible moisture absorption and drying characteristics, and can be used in a cycle of absorption and desorption; and has excellent weather resistance and temperature resistance at a use temperature of-60℃ to 120℃.

[0022] By applying the application, the heat generated by the electrical elements inside the headlamp is used to realize the cycle of moisture absorption and desorption of the reversible desiccant film, effectively solves the fogging problem of the new flattened and narrow strip type headlamp, and has the advantages of simple structure, low cost, and remarkable defogging effect. BRIEF DESCRIPTION OF DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the application, and for those skilled in the art, other drawings can also be obtained without creative labor based on these drawings, wherein:

[0024] Figure 1 is a structure schematic view of a preferred embodiment of the film assembly combined with a graphene carbon heat-conducting sheet and a reversible desiccant film for automobile lamp defogging of the application;

[0025] Figure 2 is a structure schematic view of another preferred embodiment of the film assembly combined with a graphene carbon heat-conducting sheet and a reversible desiccant film for automobile lamp defogging of the application. DETAILED DESCRIPTION

[0026] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the following will be clearly and completely described the technical solutions in the embodiments of the present application with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor are within the scope of protection of the present application.

[0028] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0029] In the description of the present application, it should be noted that the terms "front", "back" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship when the product of the present application is usually placed, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second" and the like are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present application, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided", "connected" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be connected inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0031] In the present application, unless otherwise explicitly specified and limited, the first feature above or below the second feature can include that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, the first feature above, above and above the second feature includes that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature below, below and below the second feature includes that the first feature is directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0032] Referring to Figure 1 Embodiment 1 of the present application comprises:

[0033] A film assembly of graphene carbon heat-conducting sheet combined with reversible desiccant film for defogging of automobile lamp, comprising:

[0034] A graphene carbon heat-conducting sheet layer 1 is arranged on the inner wall of the lamp housing 2 as a base layer, comprising a heat-absorbing area and a heat-conducting area, the heat-absorbing area is arranged towards the heat-generating element 3 in the lamp, for absorbing infrared heat, and the heat-conducting area extends from the heat-absorbing area to the cold area prone to fogging to form a heat-conducting area for heat dissipation and defogging. The graphene carbon heat-conducting sheet used in the present application has excellent heat-conducting performance, is light, thin, soft, and the specific parameters are shown in the following table:

[0035]

[0036] A reversible desiccant film layer 4 is arranged in the heat-conducting area to absorb the heat energy and temperature transferred by the graphene carbon heat-conducting sheet layer 1 to realize desorption and drying of the micro water in the film.

[0037] The working principle is: using the heat energy and temperature generated by the operation of electrical appliances such as lamps, the heat energy and temperature are transferred to the reversible desiccant film through the graphene carbon heat-conducting sheet, so that the reversible desiccant film that has absorbed moisture desorbs the micro water, and the reversible desiccant film is in a dry state and has the ability to absorb moisture again.

[0038] The reversible desiccant film layer 4 comprises a support skeleton layer, a functional layer and active fillers, the functional layer is compounded on the surface of the support skeleton layer, and the active fillers are embedded in the support skeleton layer.

[0039] The reversible desiccant film mainly comprises an expanded polytetrafluoroethylene film with a microporous structure and a mist absorbent slurry. The mist absorbent slurry is coated into the expanded polytetrafluoroethylene film by using high-precision surface controllable coating composite technology, the expanded polytetrafluoroethylene film is a support skeleton layer, the mist absorbent slurry forms a functional layer on the surface of the expanded polytetrafluoroethylene film and is embedded in the microporous structure as active fillers.

[0040] The reversible desiccant film of the present application can reach a moisture absorption rate of more than 140% of its own weight under the condition of 40 DEG C and 90% RH, and can desorb more than 130% under the condition of 35 DEG C environment in the saturated state, has long-term reversible moisture absorption and drying characteristics, and can be used in a cycle of absorption and desorption; the use temperature is-60 DEG C~120 DEG C, and the film has excellent weather resistance and temperature resistance.

[0041] An ePTFE expanded polytetrafluoroethylene breathable film layer 5 is encapsulated on the surface of the reversible desiccant film layer 4.

[0042] The micropore diameter of the ePTFE expanded polytetrafluoroethylene air-permeable film is 0.1-30 microns, and there are hundreds of millions of irregular cross-layer intersecting three-dimensional microporous air-permeable gaps per square centimeter, and the material has a large number of interconnected micropores from the surface to the inside Figure 1 As shown, having certain air permeability and moisture permeability.

[0043] The packaging is a single-side covered cap packaging, and one side surface of the reversible desiccant film sheet layer 4 is connected with the graphene carbon heat conduction sheet layer 1, and the remaining surfaces are connected with the ePTFE expanded polytetrafluoroethylene air-permeable film layer 5.

[0044] One side surface of the reversible desiccant film sheet layer 4 is connected with the graphene carbon heat conduction sheet layer 1 through the double-sided pressure-sensitive adhesive sheet 6.

[0045] The specific preparation method of the film assembly includes the following steps:

[0046] (1) Prepare materials, including: reversible desiccant film sheet, graphene carbon heat conduction sheet, double-sided pressure-sensitive adhesive sheet and ePTFE expanded polytetrafluoroethylene film;

[0047] (2) Die cutting processing is performed on the above-mentioned materials to process reversible desiccant film sheets, graphene carbon heat conduction sheets and double-sided pressure-sensitive adhesive sheets of required sizes respectively;

[0048] (3) The reversible desiccant film sheet is bonded and connected with the graphene carbon heat conduction sheet using a pressure-sensitive adhesive patch;

[0049] (4) The reversible desiccant film sheet is cap-packaged using the ePTFE expanded polytetrafluoroethylene film;

[0050] (5) The pressure-sensitive adhesive sheet strip with release paper is bonded on the back surface of the graphene carbon heat conduction sheet;

[0051] (6) Code spraying is performed on the packaging surface of the ePTFE expanded polytetrafluoroethylene film;

[0052] (7) The packaged component is vacuum-pumped and packaged;

[0053] (8) The packaged component is inspected, and after the inspection is qualified, it is stored in the warehouse.

[0054] Please refer to Figure 2 , the embodiment 2 of the present application comprises:

[0055] A film assembly of a graphene carbon heat conduction sheet combined with a reversible desiccant film sheet for defogging of an automobile lamp, comprising:

[0056] The graphene carbon heat conduction sheet layer 1 is arranged on the inner wall of the vehicle lamp shell 2 as a base layer, and includes a heat absorption area and a heat conduction area, the heat absorption area is arranged towards the heat generating element 3 in the vehicle lamp, and is used for absorbing infrared heat, and the heat conduction area is formed by extending from the heat absorption area to a cold area prone to fogging, and is used for conducting heat out and de-fogging.

[0057]

[0058] The reversible desiccant film layer 4 is arranged in the heat conduction area, absorbs the heat energy and temperature transmitted by the graphene carbon heat conduction sheet layer 1, and realizes film micro-moisture desorption drying.

[0059] The working principle is that: the heat energy and temperature generated by the electric appliance such as the vehicle lamp are transmitted to the reversible desiccant film through the graphene carbon heat conduction sheet, so that the moisture-absorbed reversible desiccant film desorbs micro-moisture, and the reversible desiccant film is in a dry state and has a recycling ability of re-moisture absorption.

[0060] The reversible desiccant film layer 4 includes a support skeleton layer, a functional layer and an active filler, the functional layer is compounded on the surface of the support skeleton layer, and the active filler is embedded in the support skeleton layer.

[0061] The reversible desiccant film mainly includes an expanded polytetrafluoroethylene film with a microporous structure and a mist absorbent slurry. The mist absorbent slurry is coated into the expanded polytetrafluoroethylene film by using a high-precision surface controllable coating composite technology, the expanded polytetrafluoroethylene film is a support skeleton layer, the mist absorbent slurry forms a functional layer on the surface of the expanded polytetrafluoroethylene film, and is embedded into the microporous structure as an active filler.

[0062] The reversible desiccant film can reach more than 140% of the weight of itself under the condition of 40 DEG C and 90% RH, and can desorb more than 130% under the condition of 35 DEG C in a saturated state, has long-term reversible moisture absorption and drying characteristics, and is used in a cycle of absorption and desorption; the use temperature is-60 DEG C to 120 DEG C, and the reversible desiccant film has excellent weather resistance and temperature resistance.

[0063] The ePTFE expanded polytetrafluoroethylene air-permeable film layer 5 is packaged on the surface of the reversible desiccant film layer 4.

[0064] The micropore diameter of the ePTFE expanded polytetrafluoroethylene air-permeable film is 0.1-30 mu m, there are hundreds of millions of irregular cross-layer intersecting three-dimensional micropore air-permeable gaps per square centimeter, and the material has a large number of, mutually penetrating, from the surface to the inside micropores Figure 1 As shown in the figure, has certain air permeability and moisture permeability.

[0065] The encapsulation is a wrap-around encapsulation, in which the ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is wrapped around the entire surface of the reversible desiccant membrane layer 4, and the reversible desiccant membrane layer 4 is connected to the graphene carbon thermal conductive sheet layer 1 through the ePTFE expanded polytetrafluoroethylene breathable membrane layer 5.

[0066] The ePTFE expanded polytetrafluoroethylene breathable membrane layer 5 is connected to the graphene carbon thermal conductive sheet layer 1 via a double-sided pressure-sensitive film 6.

[0067] The specific preparation method of the membrane module of the present invention includes the following steps:

[0068] (1) Prepare materials, including: reversible desiccant film, graphene carbon thermal conductive sheet, double-sided pressure-sensitive film and ePTFE expanded polytetrafluoroethylene film.

[0069] (2) The above materials are die-cut to produce reversible desiccant films, graphene carbon thermal conductive sheets and double-sided pressure-sensitive films of the required sizes.

[0070] (4) Use ePTFE expanded polytetrafluoroethylene membrane to encapsulate the reversible desiccant membrane;

[0071] (3) Use pressure-sensitive adhesive patches to bond the ePTFE expanded polytetrafluoroethylene film to the graphene carbon thermal conductive sheet;

[0072] (5) Adhere a pressure-sensitive adhesive strip with release paper to the back of the graphene carbon thermal conductive sheet;

[0073] (6) Printing is performed on the surface of the ePTFE expanded polytetrafluoroethylene film encapsulation;

[0074] (7) Vacuum pack the packaged components;

[0075] (8) Inspect the packaged parts, and store them in the warehouse after they pass the inspection.

[0076] The thickness of the membrane modules in Examples 1-2 is 0~3000 μm.

[0077] An application of a membrane module combining a graphene carbon heat-conducting sheet and a reversible desiccant membrane for defogging automotive headlights is described, wherein the membrane module is adhered to the inner wall of the flat and narrow strip-shaped headlight housing of split headlights, through-type headlights, and lightsaber-type headlights using double-sided pressure-sensitive adhesive film 6.

[0078] The reversible desiccant membrane absorbs trace moisture from the air in the cold zone, reducing humidity within the novel flat and elongated ribbon-shaped housing and thus eliminating fogging. As the headlights operate, the heat and temperature absorbed by the graphene carbon heat-conducting sheet are rapidly transferred to the reversible desiccant membrane. Under the influence of this heat and temperature, the reversible desiccant membrane begins to desorb the absorbed moisture. This desorbed moisture is carried away by the micro-circulation airflow within the headlights. This process reduces humidity within the new flat and elongated ribbon-shaped housing, eliminating fogging, while simultaneously restoring the reversible desiccant membrane's ability to continue drying and absorbing moisture. This allows for the elimination of fogging in flat and elongated ribbon-shaped headlights, such as split headlights, continuous headlights, and lightsaber-style headlights, through cyclical use during operation and when the headlights are parked.

[0079] This membrane module is also used in the tiny spaces of smart helmet displays, monitoring probes, image detection, and lidar detection sensors to eliminate fogging in these spaces, allowing their electrical performance to be effectively utilized and enabling more reliable operation.

[0080] When membrane modules are combined with CMD condensation controllers and applied inside automotive headlight housings, they can achieve better defogging results.

[0081] This invention relates to a membrane assembly for automotive headlight defogging, combining a graphene carbon heat-conducting sheet and a reversible desiccant film. This assembly boasts an extremely thin thickness, enabling it to fit within the confined spaces of novel flat and elongated strip-shaped headlights such as split headlights, continuous headlights, and lightsaber-style headlights. This ultra-thin design significantly shortens the design verification and development cycle of new energy vehicle headlights, allowing for rapid market launch and meeting consumer demand for stylish and avant-garde designs.

[0082] The membrane module of this invention is inexpensive and can be used in conjunction with a vehicle headlight venting membrane module and a CMD condensation controller to further enhance the defogging effect. This combined application not only reduces the overall cost of the vehicle headlight system but also significantly improves defogging performance, ensuring that the headlights maintain good light transmittance and clarity under various environmental conditions.

[0083] The membrane module of this invention effectively reduces the humidity inside the vehicle headlight, eliminating fogging and ensuring stable headlight performance. Simultaneously, its ultra-thin and transparent characteristics do not affect the headlight's appearance design; on the contrary, they enhance its aesthetics, increase product appeal, and satisfy consumers' pursuit of a smart and technological feel.

[0084] The membrane module of this invention does not require changes to the internal structure and layout of already designed and mass-produced new energy vehicle headlights, and can be directly applied to existing headlight systems. This design significantly shortens the development and installation cycle of new headlights, saving customers and consumers considerable time and costs, while simplifying engineering application processes and improving application efficiency.

[0085] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A film assembly of graphene carbon heat conducting sheet and reversible desiccant film sheet for defogging of automobile headlamp, characterized in that, The application relates to a graphene carbon heat-conducting sheet layer arranged on the inner wall of a vehicle lamp shell as a base layer, which comprises a heat-absorbing area and a heat-conducting area, the heat-absorbing area is arranged towards a heat-generating element in the vehicle lamp and is used for absorbing infrared heat, the heat-conducting area is formed by extending the heat-absorbing area to a cold area prone to fogging and is used for conducting heat out and removing fog. A reversible desiccant film layer is arranged in the heat-conducting area, absorbs the heat energy and temperature transmitted by the graphene carbon heat-conducting sheet layer, realizes the desorption of micro water in the reversible desiccant film layer, and makes the reversible desiccant film layer in a dry state. The reversible desiccant film layer comprises a support skeleton layer, a functional layer and active fillers, the functional layer is compounded on the surface of the support skeleton layer, and the active fillers are embedded in the support skeleton layer. The reversible desiccant film layer mainly comprises an expanded polytetrafluoroethylene film with a microporous structure and a mist absorbent slurry, the mist absorbent slurry is coated into the expanded polytetrafluoroethylene film by adopting a high-precision surface controllable coating compounding technology, the expanded polytetrafluoroethylene film is the support skeleton layer, the mist absorbent slurry forms the functional layer on the surface of the expanded polytetrafluoroethylene film and is embedded into the microporous structure as the active fillers; the thickness of the film assembly is 0-3000 microns; wherein, an ePTFE expanded polytetrafluoroethylene air-permeable film layer is packaged on the surface of the reversible desiccant film layer. The packaging comprises single-side covering cap packaging, one side surface of the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer, and the other surfaces are connected with the ePTFE expanded polytetrafluoroethylene air-permeable film layer.

2. The graphene carbon heat conducting sheet for defogging of automobile vehicle lamp in combination with the membrane assembly of reversible desiccant sheet according to claim 1, characterized in that, One side surface of the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer through double-sided pressure-sensitive adhesive sheets.

3. The graphene carbon heat conducting sheet for defogging of automobile lamp combined with the membrane assembly of reversible desiccant film according to claim 2, characterized in that, The packaging comprises cladding packaging, the ePTFE expanded polytetrafluoroethylene air-permeable film layer is cladded on the whole surface of the reversible desiccant film layer, and the reversible desiccant film layer is connected with the graphene carbon heat-conducting sheet layer through the ePTFE expanded polytetrafluoroethylene air-permeable film layer.

4. The graphene carbon heat conducting sheet for defogging of automobile vehicle lamp in combination with the membrane assembly of reversible desiccant sheet according to claim 1, characterized in that, The ePTFE expanded polytetrafluoroethylene air-permeable film layer is connected with the graphene carbon heat-conducting sheet layer through double-sided pressure-sensitive adhesive sheets.

5. The graphene carbon heat conducting sheet for defogging of automobile lamp combined with the membrane assembly of reversible desiccant film according to claim 4, characterized in that, The film assembly is pasted in the inner wall of a split type headlamp, a through type headlamp, a light sword type headlamp, a flattened and narrow strip type vehicle lamp shell through double-sided pressure-sensitive adhesive sheets.

6. The application of a graphene carbon heat conducting sheet combined with a reversible desiccant film sheet of a film assembly for defogging of an automobile lamp, characterized in that, The film assembly is combined with a CMD condensation controller and applied to the vehicle lamp shell.

7. The use of a graphene carbon heat conducting sheet for defogging of an automotive vehicle light in combination with a membrane assembly of a reversible desiccant film sheet according to claim 6, characterized in that, ​

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