CN215336128U - Ventilating, dehumidifying and antifogging device for car lamp - Google Patents

Abstract

The utility model belongs to the technical field of automobile lamps, and relates to a ventilating, dehumidifying and antifogging device for an automobile lamp. According to the utility model, the spiral air flow channel is designed in the shell, and the sponge is filled in the flow channel, so that when external high-humidity water vapor is transferred into the lamp, the effective area of water vapor diffusion can be reduced due to the longer spiral air flow channel and the sponge is filled in the spiral air flow channel, the water vapor diffusion resistance is further increased, the water vapor achieves dynamic balance in the spiral air flow channel, and the amount of the water vapor entering the lamp from the outside can be effectively controlled; in addition, a drying agent with high moisture absorption performance is added into the shell, water vapor in the automobile lamp is continuously absorbed, the humidity in the lamp can be effectively controlled, the working environment of electronic components is improved, and the risk of fogging in the lamp is reduced.

Description

Ventilating, dehumidifying and antifogging device for car lamp

Technical Field

The utility model belongs to the technical field of automobile lamps, and particularly relates to a ventilating, dehumidifying and antifogging device for an automobile lamp.

Background

At present, inside electronic components of automobile lamps and lanterns is more and more, and humidity is too high in the lamp, can influence electronic components's life on the one hand, and the inboard fog that produces of on the other hand lamp shade leads to the visitor to complain, consequently, needs the water content of the inside air of strict control automobile lamps and lanterns.

Automotive lamps generally require that a venting assembly be designed to balance the pressure differential with the outside environment, and moisture inside the lamp and outside can diffuse through the venting assembly. When the automobile lamp is placed in a high-humidity environment, after a period of time, external water vapor diffuses into the automobile lamp, the humidity in the lamp is increased, and a plastic part in the lamp continuously absorbs moisture; when the car starts or lights the car light, temperature rose in the lamp, and the working of plastics after being heated can release steam, and this leads to the inside air moisture of car light to further increase, produces the water smoke in the inboard department of car light lamp shade easily, influences car light illuminating effect.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the problems that external water vapor diffuses into a lamp in a high-humidity environment, the water content of air in the lamp is difficult to control, fog is easy to generate and the service life of electronic components is influenced.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a car light is with ventilative dehumidification anti-fogging device, includes the casing, set up heliciform air flow channel in the casing, the both ends of air flow channel communicate with the air inlet and the gas outlet of casing respectively, set up the drying chamber between air flow channel and the casing, drying chamber and the outside intercommunication of casing.

Preferably, a spiral groove is formed in the shell, a baffle is arranged above the spiral groove, and the baffle and the spiral groove are matched to form a spiral air flow channel.

Preferably, the baffle is connected with the shell through a screw, and the baffle is connected with the spiral groove in a sealing mode through a sealing gasket.

Preferably, the length of the spiral air flow channel is not less than 300 mm.

Preferably, the air inlet and the air outlet are respectively arranged on cover plates at one end of the shell and the other end of the shell, the cover plates are in threaded connection with the shell, and a plurality of fence holes communicated with the drying chamber are formed in the cover plates.

Preferably, a first breathable film is arranged at the air inlet, and second breathable films are arranged at a plurality of fence holes.

Preferably, the spiral air channel is filled with sponge.

Preferably, the drying chamber is filled with a powdery drying agent.

After the technical scheme is adopted, the breathable dehumidifying and antifogging device for the vehicle lamp provided by the utility model has the following beneficial effects:

according to the utility model, the spiral air flow channel and the drying agent with high moisture absorption performance are arranged in the shell, so that the diffusion rate of water vapor to the lamp in a high-humidity environment can be effectively reduced while the pressure difference between the inside and the outside of the vehicle lamp is balanced, and the drying agent is used for continuously absorbing the water vapor in the lamp, so that the humidity in the lamp is controlled, the dryness in the lamp is kept, and the fogging in the lamp is avoided.

Drawings

FIG. 1 is a cross-sectional view of a ventilation, dehumidification and anti-fog device for a vehicle lamp according to the present invention;

FIG. 2 is a schematic view of the internal structure of the housing according to the present invention;

FIG. 3 is a top view of the helical groove in the housing of the present invention;

fig. 4 is a schematic structural view of the spiral air channel of the present invention.

Wherein: the air-permeable shell comprises a shell 1, a cover plate 2, a baffle plate 3, a second air-permeable membrane 4, a sealing gasket 5, a first air-permeable membrane 6, a sponge 7 and a powdery drying agent 8.

Detailed Description

The present invention now will be described more fully hereinafter with reference to the accompanying drawings and detailed description, in which it is to be understood that the embodiments described are merely illustrative of some, but not all embodiments of the utility model. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the utility model, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.

In the description of the present invention, it is to be understood that the orientation or positional relationship indicated by the orientation words such as "front, rear, upper, lower, left, right", "lateral, vertical, horizontal" and "top, bottom", etc. are usually based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and in the case of not making a reverse description, these orientation words do not indicate and imply that the device or element being referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore, should not be considered as limiting the scope of the present invention; the terms "inner and outer" refer to the inner and outer relative to the profile of the respective component itself.

Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.

It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.

The utility model discloses a breathable dehumidifying and antifogging device for a car lamp, which comprises a shell 1, wherein a spiral air flow channel is arranged in the shell 1, two ends of the air flow channel are respectively communicated with an air inlet and an air outlet of the shell 1, external water vapor enters the spiral air flow channel through the air inlet and diffuses into the lamp through the air outlet, a drying chamber is arranged between the air flow channel and the shell 1, and the drying chamber is communicated with the outside of the shell 1 and used for absorbing the water vapor in the lamp.

The air-conditioning device comprises a shell 1, a spiral groove is arranged in the shell 1, a baffle 3 is arranged above the spiral groove, the baffle 3 and the spiral groove are matched to form a spiral air flow channel, specifically, the baffle 3 is connected with the shell 1 through a screw, the baffle 3 is in sealing connection with the spiral groove through a sealing gasket 5, the baffle 3 and the spiral groove are used for ensuring that a closed spiral air flow channel is formed between the baffle 3 and the spiral groove, a channel communicated with an air outlet is arranged in the middle of the baffle 3, the length of the spiral air flow channel is not less than 300mm, the longer the air flow channel is, the longer the humidity diffusion path is, the smaller the water vapor diffusion rate is, and a sponge 7 is filled in the spiral air flow channel, so that the effective area of the water vapor diffusion path can be reduced, the diffusion resistance is further increased, and the water vapor diffusion rate is reduced.

Further, the air inlet and the air outlet are respectively arranged on the cover plate 2 at one end of the shell 1 and the other end of the shell 1, the first breathable film 6 is arranged at the air inlet, and the cover plate 2 is in threaded connection with the shell 1, so that the disassembly and the assembly are convenient; when the drying agent in the drying chamber loses efficacy, the device can be used for lighting again only by unscrewing the cover plate 2 and replacing the drying agent, a plurality of fence holes communicated with the drying chamber are formed in the cover plate 2, and a plurality of second breathable films 4 are arranged at the fence holes, so that the drying agent in the drying chamber can be prevented from overflowing from the breathable fence holes.

Furthermore, the drying chamber is filled with powdery drying agents 8, so that water vapor in the automobile lamp can be adsorbed, and plastic parts in the lamp can be in a dry environment for a long time.

When the breathable dehumidifying and antifogging device for the car lamp is used, the breathable dehumidifying and antifogging device is installed on a lamp shell of the car lamp, air in the lamp is communicated with the outside through a spiral air flow channel inside the device, when the car lamp works in rainy seasons or high-humidity external environments, moist water vapor passes through a first breathable film 6 and slowly diffuses into the lamp through the spiral air flow channel, the concentration gradient on a diffusion path is a driving force according to a mass transfer principle (Fick's law), as a spiral groove in a shell 1 and a baffle 3 form the spiral air flow channel with the length being more than 300mm, the spiral air flow channel is longer, sponge 7 is filled in the middle, when the external high-humidity water vapor is slowly transferred into the lamp, the moisture diffusion path is longer, the effective area is smaller, finally the water vapor reaches dynamic balance in the middle of the air flow channel, the transfer rate is reduced, and the high-humidity water vapor cannot rapidly enter the lamp; meanwhile, the powdery drying agent 8 is arranged in the shell 1, water vapor in the lamp penetrates through the rectangular barrier holes and the breathable films 4 in the cover plate 2, and is continuously absorbed by the powdery drying agent 8, so that components and plastic parts in the lamp are always in a low-humidity environment, the plastic parts are in a dry environment and hardly absorb moisture, when the automobile is started or the lamp is lighted, the water vapor emitted after the plastic parts are heated is less, the internal dryness of the lamp can be kept, the working environment of electronic components in the lamp is improved, the service life is prolonged, the service life of the lamp is prolonged, the use cost of the LED lamp is reduced, meanwhile, the probability of forming the mist in the lamp can be reduced, the area of forming the mist is reduced, the defogging speed of the lamp is increased from the side surface, the normal use function of the lamp is not influenced, and potential safety hazards are eliminated.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims (8)

1. The utility model provides a car light is with ventilative dehumidification anti-fogging device which characterized in that: the drying device comprises a shell (1), wherein a spiral air flow channel is arranged in the shell (1), two ends of the air flow channel are respectively communicated with an air inlet and an air outlet of the shell (1), a drying chamber is arranged between the air flow channel and the shell (1), and the drying chamber is communicated with the outside of the shell (1).

2. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 1, wherein: the spiral air flow channel is characterized in that a spiral groove is formed in the shell (1), a baffle (3) is arranged above the spiral groove, and the baffle (3) and the spiral groove are matched to form a spiral air flow channel.

3. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 2, wherein: the baffle (3) is connected with the shell (1) through screws, and the baffle (3) is connected with the spiral groove through a sealing gasket (5) in a sealing mode.

4. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 1, wherein: the length of the spiral air flow channel is not less than 300 mm.

5. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 1, wherein: the air inlet and the air outlet are respectively arranged on the cover plate (2) at one end of the shell (1) and the other end of the shell (1), the cover plate (2) is in threaded connection with the shell (1), and a plurality of fence holes communicated with the drying chamber are formed in the cover plate (2).

6. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 5, wherein: the air inlet is provided with a first breathable film (6), and a plurality of fence holes are provided with second breathable films (4).

7. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 1, wherein: and the spiral air channel is filled with sponge (7).

8. The air-permeable, dehumidifying and antifogging device for vehicle lamps according to claim 1, wherein: the drying chamber is filled with a powdery drying agent (8).

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