CN112781009A - Method for preventing fog of vehicle lamp and fog-proof vehicle lamp - Google Patents
Method for preventing fog of vehicle lamp and fog-proof vehicle lamp Download PDFInfo
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- CN112781009A CN112781009A CN202110212517.7A CN202110212517A CN112781009A CN 112781009 A CN112781009 A CN 112781009A CN 202110212517 A CN202110212517 A CN 202110212517A CN 112781009 A CN112781009 A CN 112781009A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
- F21S45/20—Promoting gas flow in lighting devices, e.g. directing flow toward the cover glass for demisting
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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Abstract
The invention provides a method for preventing fog of a car lamp and a fog-proof car lamp, wherein after the car lamp is assembled, nitrogen is filled into the car lamp through an inflation hole of the car lamp, so that original gas including moisture in the car lamp is exhausted out of the car lamp through an air outlet hole of the car lamp; after original gas in the car lamp is completely replaced by nitrogen, the inflation hole and the air outlet hole of the car lamp are sealed through the sealing cover. By adopting the technical scheme, the formation of fog in the automobile lamp can be fundamentally inhibited, visible fog can not be generated in the processes of assembling, transporting, storing, loading or using the automobile lamp, and the cost can be effectively saved while the effect is realized.
Description
Technical Field
The invention relates to the field of automobile lamps, in particular to a method for preventing fog of an automobile lamp and the automobile lamp.
Background
At present, the car lamp mainly adopts a ventilation cap or a ventilation film to realize the air exchange between the inside and the outside of the lamp. However, with the rapid development of vehicle lamp technology, vehicle lamps are more and more complex in design, the space in the lamp is occupied by more and more decorative parts and electronic components, and the air circulation in the lamp is difficult. The conventional breathable cap or breathable film cannot timely discharge fog in the lamp out of the lamp, so that water vapor is condensed on the inner surface cover of the lamp to generate sagging, the use of the lamp is finally influenced, and the inconvenience and even complaint in use of a user are caused. The defogging method that currently commonly uses is, the back heat production after lighting a lamp, dispel after making the fog evaporation, but this kind of mode receives ambient temperature's influence, and is not very effective, though have had the technical scheme who fills nitrogen gas in to lighting device's the casing among the prior art, does not have the technical scheme how to fill nitrogen gas and corresponding car light structure in to the car light shell.
Therefore, the invention provides a method for preventing fog of a vehicle lamp and a fog-proof vehicle lamp, wherein nitrogen is filled into the vehicle lamp through the air filling hole arranged on the vehicle lamp shell, and original air and moisture in the vehicle lamp are discharged through the air outlet hole, so that the air filling hole and the air outlet hole are sealed after the original air in the vehicle lamp is completely replaced by the nitrogen, thereby effectively inhibiting the formation of fog in the vehicle lamp in the transportation, storage or use process of the vehicle lamp and saving the cost.
Disclosure of Invention
In order to solve the above problems, an object of the present invention is to provide a method for preventing fogging of a vehicle lamp and a fogging-resistant vehicle lamp, wherein nitrogen is used to replace all the original air and moisture in the vehicle lamp through an air charging hole and an air outlet hole formed in a vehicle lamp housing after the vehicle lamp is assembled, and then the air charging hole and the air outlet hole are sealed, thereby effectively solving the problem of fogging of the vehicle lamp and inhibiting the formation of fogging during vehicle loading, transportation, storage and use.
Specifically, the invention provides a method for preventing fog of a vehicle lamp, which comprises the steps of filling nitrogen into the vehicle lamp through an inflation hole of the vehicle lamp after the vehicle lamp is assembled, and discharging original gas including moisture in the vehicle lamp out of the vehicle lamp through an air outlet hole of the vehicle lamp; after original gas in the car lamp is completely replaced by nitrogen, the inflation hole and the air outlet hole of the car lamp are sealed through the sealing cover.
Preferably, in the above method for preventing fogging of a vehicle lamp, after the sealing cover seals the inflation hole and the air outlet hole of the vehicle lamp, the method further includes: absorbing moisture released by an interior material of the vehicle lamp by a condensation management module of the vehicle lamp when the vehicle lamp is not in use; when the vehicle lamp is turned on, exhausting redundant gas in the vehicle lamp through a ventilation structure of the condensation management module; when the automobile lamp is turned off after being turned on, external air is dried by the condensation management module and then enters the automobile lamp through the ventilation structure.
Preferably, in the method for preventing fogging of the vehicle lamp, when the vehicle lamp is filled with nitrogen gas, a nitrogen filling machine is used for filling, and the purity of the filled nitrogen gas is 95% -99.5%.
Preferably, in the method for preventing fogging of a vehicular lamp, when the purity of the filled nitrogen gas is 97%, the filling rate is 0.74m3/hr-19.4m3(ii)/hr; and/or, when the purity of the filled nitrogen is 98%, the filling rate is 0.51m3/hr-14.16m3(ii)/hr; and/or, when the purity of the nitrogen filling is 99%, the filling rate is 0.28m3/hr-8.21m3/hr。
Preferably, in the method for preventing fogging of a vehicular lamp, when the purity of the filled nitrogen gas is 97%, the filling rate is 5.8m3(ii)/hr; and/or a filling rate of 4.25m is used when the purity of the nitrogen filling is 98%3(ii)/hr; and/or, when the purity of the nitrogen filling is 99%, the filling rate is 2.49m3/hr。
Preferably, the method for preventing the vehicle lamp from fogging further includes detecting the anti-fogging capability of the vehicle lamp before use, and the detecting step includes: a pretreatment step: placing the car lamp in an environment with the relative humidity of 80% for at least 24 hours, turning off all functions of the car lamp, and recording the humidity change in the lamp; a rain step: placing the vehicle lamp after the pretreatment step in a rainwater environment for raining, lighting the vehicle lamp, circularly changing the ambient temperature and/or humidity before and after the lamp body, wherein the raining step is performed for 2 times in total and 1 hour in total, and recording the humidity change in the lamp; a dissipation step: and stopping raining, turning off the car lamp after the car lamp is continuously turned on for a period of time, and continuously measuring the humidity change in the lamp.
Preferably, the method for preventing the vehicle lamp from fogging further includes detecting the anti-fogging capability of the vehicle lamp before use, and the detecting step includes: lighting the car lamp, putting the car lamp in a rainwater environment for raining in a first time interval, and observing and recording whether fog is generated in the car lamp and/or the time of the fog generation; continuously placing the vehicle lamp in a rainwater environment for raining in a second time interval, and observing and recording whether fog is generated in the vehicle lamp and/or the time for generating the fog if the fog is not generated in the first time interval; stopping the vehicle lamp from raining in a third time interval, and observing whether fog generated in the vehicle lamp dissipates or not; and extinguishing the car lamp, placing the car lamp in a room temperature environment in a fourth time interval, and recording the time for dissipating fog in the car lamp.
Preferably, in the above method for preventing fog from occurring to the vehicle lamp, the first time interval is 30 minutes, and the rain parameters are 18L/min, 3bar and 15 ℃; the second time interval is 30 minutes, and the rainwater parameters are 18L/min, 3bar and 15 ℃; the third time interval is 20 minutes; the fourth time interval is 6 hours.
The invention also provides an anti-fogging vehicle lamp, which comprises a vehicle lamp mask and a vehicle lamp shell, wherein an inflation hole and an air outlet hole are formed in the vehicle lamp shell; filling nitrogen into the car lamp through the inflation hole, and discharging original gas in the car lamp through the air outlet hole; the vehicular lamp further includes: the sealing cover is adaptive to the air charging hole and the air outlet hole and is used for sealing the air charging hole and the air outlet hole; and after the nitrogen is filled, the air charging hole and the air outlet are sealed.
Preferably, in the above anti-fogging vehicle lamp, the inflation hole and the air outlet hole are disposed at diagonal positions, upper and lower positions, or left and right positions of the vehicle lamp housing.
Preferably, the anti-fogging vehicle lamp further comprises a condensation management module; the condensation management module has a ventilation structure for exchanging air between the interior of the vehicle lamp and the exterior.
Preferably, in the above anti-fogging vehicle lamp, after the air charging hole and the air discharging hole are closed, the ventilation structure of the condensation management module is the only air exchange structure on the vehicle lamp; when the vehicle lamp is in a non-use state, the condensation management module absorbs moisture released by the interior material of the vehicle lamp; when the automobile lamp is in a use state, when the automobile lamp is turned on, redundant gas in the automobile lamp is discharged out of the automobile lamp through the ventilation structure, and when the automobile lamp is turned off, external gas is dried by the condensation management module and then enters the automobile lamp through the ventilation structure.
After the technical scheme is adopted, compared with the prior art, the method has the following beneficial effects:
1. the formation of fog in the car lamp is fundamentally inhibited;
2. the nitrogen is low in price and convenient to obtain, and the cost is effectively saved;
3. the cooperation removable condensation management module can continuously restrain the fog and produce until car light life finishes.
Drawings
FIG. 1 is a schematic view illustrating a process of replacing original gas in a vehicle lamp with nitrogen in a method for preventing fogging of a vehicle lamp according to a preferred embodiment of the present invention;
FIG. 2 is a graph comparing relative humidity curves for a 24 hour lamp in accordance with a preferred embodiment of the present invention;
FIG. 3 is a graph comparing the relative humidity curves in the lamps during the test in accordance with a preferred embodiment of the present invention.
Detailed Description
The advantages of the invention are further illustrated in the following description of specific embodiments in conjunction with the accompanying drawings.
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
It is to be understood that although the terms first, second, third, etc. may be used herein to describe various information, such information should not be limited to these terms. These terms are only used to distinguish one type of information from another. For example, first information may also be referred to as second information, and similarly, second information may also be referred to as first information, without departing from the scope of the present disclosure. The word "if" as used herein may be interpreted as "at … …" or "when … …" or "in response to a determination", depending on the context.
In the following description, suffixes such as "module", "component", or "unit" used to denote elements are used only for facilitating the explanation of the present invention, and have no specific meaning in themselves. Thus, "module" and "component" may be used in a mixture.
The invention provides a method for preventing the fog of a vehicle lamp, which comprises the steps that after the vehicle lamp is assembled, nitrogen is filled into the vehicle lamp through an air filling hole in the vehicle lamp, so that the original gas containing moisture in the vehicle lamp is exhausted out of the vehicle lamp through the other hole of the vehicle lamp, namely an air outlet hole, and after the original gas in the vehicle lamp is completely replaced or replaced by the nitrogen, the air filling hole and the air outlet hole of the vehicle lamp are sealed through a sealing cover. The type of the sealing cover used in this embodiment is not limited, and any cover that can be adapted to the air-filling hole and the air-releasing hole to seal the sealing cover, such as a rubber sleeve, may be used.
Referring to the attached figure 1, in order to provide a schematic diagram of a process of replacing original gas in a car lamp with nitrogen in a car lamp fogging prevention method according to a preferred embodiment of the invention, an inflation hole and an air outlet hole in the car lamp are opened, one end of a nitrogen connecting pipe is connected with the inflation hole in the car lamp, the other end of the nitrogen connecting pipe is connected with a nitrogen machine, the nitrogen machine generates nitrogen, the nitrogen is conveyed through the nitrogen connecting pipe, and the nitrogen enters the car lamp from the inflation hole, so that the original air and moisture in the car lamp are extruded to be discharged out of a lamp body through the. The specific positions of the inflation hole and the air outlet are not limited, a certain distance is reserved between the inflation hole and the air outlet, and the distance is not too short. And continuously filling nitrogen for a period of time, and after the original air and moisture in the lamp are completely discharged and replaced by the nitrogen, the relative humidity in the lamp is at an extremely low level.
The dew condensation is required to be lower than the dew point temperature of the ambient air, which is the temperature to which the gaseous water contained in the air is saturated and condensed into liquid water under a fixed air pressure. At this temperature, the condensed water floats in the air and is called mist, and when it sticks to a solid surface, it is called dew point temperature. For example, in the state of 50% relative humidity, the difference between the ambient temperature and the dew point temperature is about 10-12 ℃, the difference between the ambient temperature and the dew point temperature becomes smaller with the increase of the relative humidity, and in the state of 85% relative humidity, the difference between the ambient temperature and the dew point temperature is only 2-3 ℃, so that the lower the relative humidity is, the stricter the temperature requirement of condensation or fogging is, and the less fogging is. According to the technical scheme, the relative humidity in the automobile lamp is maintained at a low level, so that visible fog cannot be generated in the process of loading, transporting or storing, the generation of the fog in the automobile lamp is effectively inhibited, the fog or sagging of the automobile lamp mask is inhibited, and the normal use of the automobile lamp is guaranteed.
Based on the above embodiments, in a preferred embodiment, after the air inflation hole and the air outlet hole of the vehicle lamp are sealed by the sealing cover, when the vehicle lamp is not in use, the condensation management module of the vehicle lamp absorbs moisture released by the internal material of the vehicle lamp; when the automobile lamp is turned on, the redundant gas in the automobile lamp is discharged through the ventilation structure of the condensation management module; when the car light is extinguished after being turned on, outside air enters the car light through the ventilation structure after being dried by the condensation management module. Specifically, a condensation management module, namely a CMD module, is installed in the car lamp, after the nitrogen is filled in the car lamp, the car lamp can release part of moisture into the lamp due to certain water absorption of materials in the non-use state, such as loading process, transportation process and storage, and the part of moisture is absorbed by the condensation management module, so that the relative humidity in the car lamp is continuously kept at an extremely low level, the interior of the lamp is continuously kept in a dry environment, the generation of fog is inhibited, and visible fog cannot be generated. Then, in the use process, due to the effects of lighting and extinguishing the lamp, the air pressure in the lamp generates respiration, so that the gas inside the lamp is exchanged with the external gas, because the two air charging holes and the air outlet hole are closed, the whole lamp body only has one self-provided ventilation structure of the condensation management module, when the lamp is lighted, the gas in the lamp expands, and the redundant gas is exhausted out of the lamp through the ventilation structure of the condensation management module; when the lamp is turned off, the gas in the lamp contracts, and the external gas enters the lamp after being dried by the condensation management module through the ventilation structure. The relative humidity in the lamp is always kept at a lower level, a dry environment is kept, and visible fog cannot be generated.
According to the technical scheme of the invention, nitrogen is filled into the lamp to remove moisture, and the CMD module is matched to keep the interior of the lamp dry, so that fog or sagging of the lamp mask is inhibited.
Based on the above embodiments, in a preferred embodiment, the condensation management module of the vehicle lamp is replaced periodically. Because the condensation management module is a replaceable module, after the original condensation management module fails, a new condensation management module can be replaced, so that the generation of fog can be continuously inhibited until the service life of the car lamp is ended.
Based on the above embodiments, in a preferred embodiment, the nitrogen gas can be replenished through the inflation hole periodically, specifically, the sealing covers of the inflation hole and the air outlet hole of the vehicle lamp are opened, and the nitrogen gas can be refilled in the lamp according to the above method.
According to the technical scheme, the formation of fog in the automobile lamp is fundamentally inhibited, the nitrogen is low in price and convenient to obtain, and the anti-fog of the automobile lamp is effectively realized while the cost is saved. The cooperation condensation management module, fog production until car light life ends in can sustainable suppression car light.
Based on the above embodiments, in a preferred embodiment, when filling nitrogen gas into the vehicle lamp, the nitrogen gas is filled by using a nitrogen filling machine, and the purity of the filled nitrogen gas is 95% -99.5%. Through filling high-purity nitrogen gas into the car light, original air and moisture in the car light are discharged, thereby inhibiting the production of fog in the car light more effectively.
The invention does not limit the filling rate of the nitrogen, and any filling rate is within the protection scope of the invention as long as the original gas in the vehicle lamp can be completely replaced by the nitrogen. In a preferred embodiment, when the purity of the nitrogen gas is 97%, a filling rate of 0.74m is used3/hr-19.4m3(ii)/hr; and/or, when the purity of the filled nitrogen gas is 98%, the filling rate is 0.51m3/hr-14.16m3(ii)/hr; and/or, when the purity of the filled nitrogen gas is 99%, the filling rate is 0.28m3/hr-8.21m3And/hr. Through the technical scheme of the invention, nitrogen can be filled more quickly and effectively to replace the original gas in the automobile lamp, so that the generation of fog in the automobile lamp is inhibited.
Preferably, when the purity of the nitrogen gas is 97%, a filling rate of 5.8m is used3(ii)/hr; and/or, when the purity of the filled nitrogen gas is 98%, the filling rate is 4.25m3(ii)/hr; and/or, when the purity of the filled nitrogen gas is 99%, the filling rate is 2.49m3/hr。
Based on the above embodiment, in a preferred embodiment, for the vehicle lamp obtained by the above technical solution of the present invention, in which the interior is filled with nitrogen, only the condensation management module is used for exchanging air between the inside and the outside of the lamp, and other parts are sealed, before use, the anti-fogging capability of the vehicle lamp is detected, and the detecting step includes: a pretreatment step: placing the car lamp in an environment with the relative humidity of 80% for at least 24 hours, turning off all functions of the car lamp, and recording the humidity change in the lamp; a rain step: placing the vehicle lamp after the pretreatment step in a rainwater environment for raining, lighting the vehicle lamp, circularly changing the ambient temperature and/or humidity before and after the lamp body, wherein the raining step is performed for 2 times, at least 1 hour is counted, preferably 1 hour, and the humidity change in the lamp is recorded; a dissipation step: and stopping raining, turning off the car lamp after the car lamp is continuously turned on for a period of time, continuously measuring the humidity change in the lamp, and setting the period of time according to actual requirements.
The detection steps of the embodiment are adopted to carry out the anti-fogging capacity test, the result is qualified through the test, no visible fog is generated, the detector is used for detecting the relative humidity in the lamp, and the relative humidity is always kept at a lower level. In the test process, in order to make the test effect more obvious, the above tests are respectively performed on the vehicle lamps before and after filling the nitrogen gas for comparison. Referring to fig. 2, which is a graph comparing the relative humidity curves in the lamp when the vehicle lamp is left for 24 hours, according to fig. 2, the relative humidity in the lamp before filling nitrogen is always between 35% and 45%, and the relative humidity is maintained at a higher level, whereas the relative humidity in the lamp after filling nitrogen according to the technical scheme of the present invention is always maintained at a lower stable level. Therefore, the technical scheme of the invention can effectively inhibit the generation of fog in the vehicle lamp. Referring to fig. 3, which is a comparison graph of relative humidity curves in the lamp in the rain test, according to fig. 3, when the relative humidity in the lamp before being filled with nitrogen is compared with the relative humidity in the lamp after being filled with nitrogen according to the technical scheme of the present invention, the relative humidity in the lamp after being filled with nitrogen according to the technical scheme of the present invention is always kept at a low level, so that the formation of fog can be effectively suppressed.
Based on the above embodiment, in another preferred embodiment, the anti-fog capability of the front vehicle lamp is detected, and the detecting step includes: the method comprises the following steps that in a first rain stage, the automobile lamp is turned on, the automobile lamp is placed in a rainwater environment to be in rain in a first time interval, and whether fog is generated in the automobile lamp or not and/or the time of the fog is observed and recorded; in the second rain stage, the lighted vehicle lamp is continuously placed in a rainwater environment for rain in a second time interval, and if no fog is generated in the first time interval, whether fog is generated in the vehicle lamp and/or the time of fog generation is observed and recorded; a first dissipation stage, wherein the automobile lamp stops raining in a third time interval, the automobile lamp is kept on, and whether fog generated in the automobile lamp dissipates or not is observed; and in the second dissipation stage, the automobile lamp is turned off, the automobile lamp is placed in a room temperature environment in a fourth time interval, and the time for dissipating the fog in the automobile lamp is recorded. Through the technical scheme, the anti-fog performance of the automobile lamp can be effectively tested.
Based on the above embodiments, in a preferred embodiment, the step of detecting the antifogging capability of the vehicle lamp before using the vehicle lamp further comprises the steps of preprocessing the whole vehicle lamp before lighting the vehicle lamp, turning off the vehicle lamp, and placing the vehicle lamp in an environment with a room temperature of 25 ℃ and a relative humidity of 80% for at least 24 hours.
Based on the above embodiment, in a preferred embodiment, the first time interval of the first rain stage in the detecting step is 30 minutes, the rain water parameters are 18L/min, 3bar and 15 ℃, the temperature of the rear side of the vehicle lamp body rises from 25 ℃ to 80 ℃ in the first time interval, and the relative humidity is reduced from 80% to 10%; the second time interval of the second rain stage is 30 minutes, the rain parameters are 18L/min, 3bar and 15 ℃, the temperature of the rear side of the lamp body of the vehicle lamp is reduced from 80 ℃ to 40 ℃ in the second time interval, and the relative humidity is increased from 10% to 90%; the third time interval of the first dissipation stage is 20 minutes, the temperature of the rear side of the lamp body of the vehicle lamp rises from 40 ℃ to 80 ℃ in the third time interval, and the relative humidity drops from 90% to 10%; after the lamp is turned off in the second dissipation stage, the lamp is placed in an environment with a room temperature relative humidity of 50%, the invention is not limited to the length of the time for placing the lamp in the environment with the room temperature relative humidity of 50% in this stage, and the fourth time interval can be 6 hours, and can also be longer or shorter, and all the time is within the protection scope of the invention. Through the technical scheme of this embodiment, can test the antifog performance of car light effectively.
According to the technical scheme, the generation of fog in the vehicle lamp can be fundamentally inhibited, the vehicle lamp can be effectively prevented from fogging no matter in a non-use state of loading, transportation and storage or in a non-use state of lighting and extinguishing, the interior of the vehicle lamp is kept dry, meanwhile, nitrogen is low in cost and easy to obtain, the cost can be effectively saved, and meanwhile, the generation of the fog of the vehicle lamp can be continuously inhibited by matching with the CMD module, so that the vehicle lamp is prevented from fogging.
The invention also provides an anti-fogging vehicle lamp, which comprises a vehicle lamp mask and a vehicle lamp shell, wherein the vehicle lamp shell is provided with an inflation hole and an air outlet hole; the inflation hole is used for filling nitrogen into the car lamp, and the air outlet hole is used for discharging original gas in the car lamp; the vehicle lamp further includes: the sealing cover is adaptive to the air charging hole and the air outlet hole and is used for sealing the air charging hole and the air outlet hole; after the nitrogen filling is completed, the gas filling hole and the gas outlet hole are closed. According to the anti-fogging vehicle lamp, after the vehicle lamp is assembled, nitrogen is filled into the vehicle lamp through the air filling hole in the vehicle lamp shell, so that original gas containing moisture in the vehicle lamp is completely discharged from the vehicle lamp through the air outlet hole, after the original gas in the vehicle lamp is completely replaced by the nitrogen, the air filling hole and the air outlet hole are sealed by the sealing cover, a sealed nitrogen environment is formed in the vehicle lamp, a dry environment is kept in the vehicle lamp, the generation of fog is effectively inhibited, and the normal use of the vehicle lamp is guaranteed.
The invention does not limit the position of the air charging hole and the air outlet hole on the car lamp shell, and the air charging hole and the air outlet hole are arranged at a certain distance. In a preferred embodiment, the inflation hole and the air outlet are arranged at the diagonal position, the upper position and the lower position or the left position and the right position of the car lamp shell, and through the arrangement mode, the original air in the car lamp can be replaced by nitrogen gas quickly and completely, and the filling efficiency is improved.
Based on the above embodiments, in a preferred embodiment, the system further comprises a condensation management module, namely a CMD module; the condensation management module has a vent structure for exchanging air between the interior of the vehicle lamp and the exterior.
Based on the above embodiments, in a preferred embodiment, after the inflation hole and the air outlet hole are sealed, the ventilation structure of the condensation management module is the only air exchange structure on the vehicle lamp, and the exchange between the interior of the vehicle lamp and the outside air is performed through the ventilation structure; when the vehicle lamp is in a non-use state, the condensation management module absorbs moisture released by the interior material of the vehicle lamp; when the automobile lamp is in a use state and is turned on, redundant gas in the automobile lamp is discharged out of the automobile lamp through the ventilation structure, and when the automobile lamp is turned off, external gas is dried by the condensation management module and then enters the automobile lamp through the ventilation structure. Specifically, when the vehicle lamp is not used in loading, transportation, storage and the like, a part of water is released into the lamp due to certain water absorption of the material, and at the moment, the condensation management module absorbs the part of water, so that the relative humidity in the vehicle lamp is continuously kept at an extremely low level, the interior of the lamp is continuously kept in a dry environment, the generation of fog is inhibited, and visible fog is not generated. Then, in the use process, due to the effects of lighting and extinguishing the lamp, the air pressure in the lamp generates respiration, so that the gas inside the lamp is exchanged with the external gas, because the two air charging holes and the air outlet hole are closed, the whole lamp body only has one self-provided ventilation structure of the condensation management module, when the lamp is lighted, the gas in the lamp expands, and the redundant gas is exhausted out of the lamp through the ventilation structure of the condensation management module; when the lamp is turned off, the gas in the lamp contracts, and the external gas enters the lamp after being dried by the condensation management module through the ventilation structure. In the technical scheme of the invention, the relative humidity in the lamp is always kept at a lower level, a dry environment is kept, and visible fog cannot be generated. Through a fog test and a long-time rain test, no visible fog is generated in the automobile lamp, the relative humidity in the automobile lamp is also kept at a lower level, a dry environment is kept, and the generation of fog is effectively inhibited.
According to the technical scheme, the original gas containing moisture in the automobile lamp is replaced by the nitrogen, so that the generation of fog of the automobile lamp under various conditions, particularly under the condition of rain, is fundamentally inhibited, and meanwhile, the generation of fog in the automobile lamp can be continuously inhibited by matching with the CMD module until the service life of the automobile lamp is ended. And the nitrogen is low in price and easy to obtain, the cost is low by adopting the scheme, and the problem of vehicle lamp fogging can be solved under the condition of saving the cost.
It should be noted that the embodiments of the present invention have been described in terms of preferred embodiments, and not by way of limitation, and that those skilled in the art can make modifications and variations of the embodiments described above without departing from the spirit of the invention.
Claims (12)
1. A method for preventing fog from appearing on a vehicle lamp is characterized in that,
after the automobile lamp is assembled, filling nitrogen into the automobile lamp through an inflation hole of the automobile lamp, so that original gas including moisture in the automobile lamp is exhausted out of the automobile lamp through an air outlet hole of the automobile lamp;
after original gas in the car lamp is completely replaced by nitrogen, the inflation hole and the air outlet hole of the car lamp are sealed through the sealing cover.
2. The method of claim 1, further comprising, after closing the inflation and deflation ports of the vehicle lamp with the sealing cap:
absorbing moisture released by an interior material of the vehicle lamp by a condensation management module of the vehicle lamp when the vehicle lamp is not in use;
when the vehicle lamp is turned on, exhausting redundant gas in the vehicle lamp through a ventilation structure of the condensation management module;
when the automobile lamp is turned off after being turned on, external air is dried by the condensation management module and then enters the automobile lamp through the ventilation structure.
3. The method according to claim 1, wherein the filling of the vehicle lamp with the nitrogen gas is performed by a nitrogen filling machine, and the purity of the filled nitrogen gas is 95% -99.5%.
4. The method of claim 3,
when the purity of the nitrogen gas charged is 97%, a charging rate of 0.74m is used3/hr-19.4m3(ii)/hr; and/or the presence of a gas in the gas,
when the purity of the nitrogen gas filled in the reactor is 98%, the filling rate is 0.51m3/hr-14.16m3(ii)/hr; and/or the presence of a gas in the gas,
when the purity of the nitrogen gas filled in the reactor is 99%, the filling rate is 0.28m3/hr-8.21m3/hr。
5. The method of claim 4,
when the purity of the nitrogen gas filled in the reactor is 97%, a filling rate of 5.8m is used3(ii)/hr; and/or the presence of a gas in the gas,
when the purity of the nitrogen gas filled in the reactor is 98%, a filling rate of 4.25m is used3(ii)/hr; and/or the presence of a gas in the gas,
when the purity of the nitrogen gas filled in the reactor is 99%, the filling rate is 2.49m3/hr。
6. The method of any one of claims 1-5, further comprising detecting an anti-fog capability of the vehicular lamp prior to use, the detecting step comprising:
a pretreatment step: placing the car lamp in an environment with the relative humidity of 80% for at least 24 hours, turning off all functions of the car lamp, and recording the humidity change in the lamp;
a rain step: placing the vehicle lamp after the pretreatment step in a rainwater environment for raining, lighting the vehicle lamp, circularly changing the ambient temperature and/or humidity before and after the lamp body, wherein the raining step is performed for 2 times in total and 1 hour in total, and recording the humidity change in the lamp;
a dissipation step: and stopping raining, turning off the car lamp after the car lamp is continuously turned on for a period of time, and continuously measuring the humidity change in the lamp.
7. The method of any one of claims 1-5, further comprising detecting an anti-fog capability of the vehicular lamp prior to use, the detecting step comprising:
lighting the car lamp, putting the car lamp in a rainwater environment for raining in a first time interval, and observing and recording whether fog is generated in the car lamp and/or the time of the fog generation;
continuously placing the vehicle lamp in a rainwater environment for raining in a second time interval, and observing and recording whether fog is generated in the vehicle lamp and/or the time for generating the fog if the fog is not generated in the first time interval;
stopping the vehicle lamp from raining in a third time interval, and observing whether fog generated in the vehicle lamp dissipates or not;
and extinguishing the car lamp, placing the car lamp in a room temperature environment in a fourth time interval, and recording the time for dissipating fog in the car lamp.
8. The method of claim 7,
the first time interval is 30 minutes, and the rain parameters are 18L/min, 3bar and 15 ℃;
the second time interval is 30 minutes, and the rain parameters are 18L/min, 3bar and 15 ℃;
the third time interval is 20 minutes;
the fourth time interval is 6 hours.
9. An anti-fogging vehicle lamp is characterized by comprising a vehicle lamp mask and a vehicle lamp shell,
the car lamp shell is provided with an inflation hole and an air outlet hole;
filling nitrogen into the car lamp through the inflation hole, and discharging original gas in the car lamp through the air outlet hole;
the vehicular lamp further includes: the sealing cover is adaptive to the air charging hole and the air outlet hole and is used for sealing the air charging hole and the air outlet hole;
and after the nitrogen is filled, the air charging hole and the air outlet are sealed.
10. The vehicular lamp according to claim 9, wherein the air charging hole and the air discharging hole are provided at diagonal positions, upper and lower positions, or left and right positions of the lamp housing.
11. The vehicular lamp according to claim 9 or 10, further comprising a condensation management module;
the condensation management module has a ventilation structure for exchanging air between the interior of the vehicle lamp and the exterior.
12. The vehicular lamp according to claim 11, wherein after the air inflation hole and the air exhaust hole are sealed, the ventilation structure of the condensation management module is the only air exchange structure on the vehicular lamp;
when the vehicle lamp is in a non-use state, the condensation management module absorbs moisture released by the interior material of the vehicle lamp;
when the automobile lamp is in a use state, when the automobile lamp is turned on, redundant gas in the automobile lamp is discharged out of the automobile lamp through the ventilation structure, and when the automobile lamp is turned off, external gas is dried by the condensation management module and then enters the automobile lamp through the ventilation structure.
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| CN202110212517.7A CN112781009B (en) | 2021-02-25 | 2021-02-25 | Method for preventing fog of vehicle lamp and fog-proof vehicle lamp |
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| CN202110212517.7A CN112781009B (en) | 2021-02-25 | 2021-02-25 | Method for preventing fog of vehicle lamp and fog-proof vehicle lamp |
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| CN112781009B (en) | 2023-03-21 |
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