CN114370624A

CN114370624A - Device for controlling humidity in lamp

Info

Publication number: CN114370624A
Application number: CN202011099914.XA
Authority: CN
Inventors: 陈小春; 张凯清
Original assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Current assignee: Changzhou Xingyu Automotive Lighting Systems Co Ltd
Priority date: 2020-10-15
Filing date: 2020-10-15
Publication date: 2022-04-19

Abstract

The invention relates to a device for controlling the humidity in a lamp, which comprises a lamp shade and a lamp cover fixed on one side of the lamp shade, wherein the lamp shade and the lamp cover are mutually communicated, a tube is fixedly wound in the lamp cover, one opening of the tube is communicated with an external ventilating bolt, and the other opening is positioned in a lamp cavity. According to the invention, by utilizing the mass transfer principle (Fick's law), the wound pipe and the drying agent with high moisture absorption performance are added in the lamp, and because the wound pipe is long, when external high-humidity water vapor is slowly transferred into the lamp, the humidity diffusion path is long, finally, the water vapor reaches dynamic balance in the middle of the wound pipe, the water vapor transmission rate is reduced, the amount of the water vapor entering the lamp from the outside of the lamp can be effectively controlled, so that the humidity in the lamp is controlled, the service life of electronic components is prolonged, and the risk of fog in the lamp is reduced.

Description

Device for controlling humidity in lamp

Technical Field

The invention belongs to the technical field of fog dissipation of automobile lamps, and particularly relates to a device for controlling humidity in a lamp.

Background

At present, inside electronic components of car lamps and lanterns is more and more, and the moisture is too high in the lamp, can influence the electronic components life-span on the one hand, and on the other hand lamp shade (1) inboard can produce fog, leads to the visitor to complain, and consequently the air water content is more and more important in the control lamp. Automobile lamps and lanterns generally all design ventilative subassembly and are used for balanced pressure differential, therefore inside and outside moisture of lamp can be through subassembly interdiffusion, places high humid environment when lamps and lanterns, and a period of time back also can reach high humidity in the lamp, and inside working of plastics constantly absorbs moisture, and the working of plastics is heated the back air moisture in the lamps and lanterns and is further increased.

Disclosure of Invention

The invention provides a device for controlling humidity in a lamp, aiming at solving the problems that the water content of air in the lamp cannot be controlled, fog can be generated and the service life of electronic components can be influenced.

Preferably, the lamp cover is provided with a through hole, and the tube extends out of the lamp cover through the through hole.

Further, in order to facilitate the mounting and dismounting of the lamp cover, the lamp cover is hermetically fixed on the lamp cover through bolts.

Preferably, a first sealing groove is formed in the lamp cover, a second sealing groove corresponding to the first sealing groove is also formed in the lamp cover, and the first sealing groove and the second sealing groove are spliced and used for placing a sealing ring. The sealing washer has guaranteed the leakproofness between lamp lid and the lamp shade, prevents that external steam etc. from entering into between lamp shade and the lamp lid, improves the humidity in the lamp.

Furthermore, a plurality of drying agents are fixed on one side, close to the lampshade, of the lamp cover. The desiccant can adsorb the water vapor inside the lamp, so that the plastic part in the lamp is in a dry environment for a long time.

Preferably, the length of the tube is not less than 200 mm. Using the principle of mass transfer (fick's law), the concentration gradient on the diffusion path is the driving force. The longer the tube, the longer the moisture diffusion path, and eventually the water vapor may reach a dynamic equilibrium in the middle of the wound tube, and the water vapor transfer rate is reduced.

Has the advantages that: according to the invention, by utilizing the mass transfer principle (Fick's law), the wound pipe and the drying agent with high moisture absorption performance are added in the lamp, and because the wound pipe is long, when external high-humidity water vapor is slowly transferred into the lamp, the humidity diffusion path is long, and finally in the middle of the wound pipe, the water vapor reaches dynamic balance, the water vapor transfer rate is reduced, the amount of the water vapor in the lamp can be effectively controlled, the humidity in the lamp is controlled, the service life of electronic components is prolonged, and the risk of the water vapor in the lamp is reduced.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the lampshade structure of the present invention;

FIG. 3 is a schematic view of a lamp cover according to the present invention;

FIG. 4 is a view showing the inner structure of one side of the lamp cover according to the present invention;

FIG. 5 is a schematic view of the inner structure of the other side of the lamp cover according to the present invention;

1. a lamp shade; 2. a tube; 3. a lamp cover; 4. a bolt; 5. a first sealing groove; 6. a second sealing groove; 7. a desiccant; 8. ventilating plugs; 9. and a through hole.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. 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.

Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "top", "bottom", and the like, as used herein, refer to an orientation or positional relationship based on that shown in the drawings, which is for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be taken as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.

Example 1

A device for controlling humidity in a lamp comprises a lamp shade 1 and a lamp cover 3 fixed on one side of the lamp shade 1, wherein the lamp shade 1 is communicated with the lamp cover 3, a tube 2 is wound and fixed in the lamp cover 3, one opening of the tube 2 is communicated with an external ventilating bolt 8, and the other opening is positioned in a lamp cavity. The water is in liquid and gaseous state, and liquid water can enter the pipe 2, and if the ventilation plug 8 is added, the function of preventing the liquid water from entering is realized, and the liquid water cannot enter the pipe 2. The gaseous water molecules are very small and can pass through the ventilation plug 8 and the tube 2, and at the moment, the inside and the outside exchange is carried out through diffusion and pressure, and finally, the water vapor balance is achieved. The venting key 8 is typically placed in a relatively low temperature environment to prevent the addition of high temperature, high humidity moisture into the tube 2 and to increase the humidity within the lamp.

The lamp cover 3 is provided with a through hole 9, and the tube 2 extends out of the lamp cover 3 through the through hole 9.

For convenient disassembly and assembly, the lamp cover 3 is hermetically fixed on the lamp shade 1 through bolts 4.

The lamp cover 3 is provided with a first sealing groove 5, the lampshade 1 is also provided with a second sealing groove 6 corresponding to the first sealing groove 5, and the first sealing groove 5 and the second sealing groove 6 are spliced to place a sealing ring. The sealing washer has guaranteed the leakproofness between lamp lid 3 and the lamp shade 1, prevents that external steam etc. from entering between lamp shade 1 and the lamp lid 3, improves the humidity in the lamp.

And a plurality of drying agents 7 are fixed on one side of the lamp cover 3 close to the lampshade 1. The desiccant 7 can adsorb the water vapor inside the lamp, so that plastic parts in the lamp are in a dry environment for a long time.

The length of the tube 2 is not less than 200 mm. Using the principle of mass transfer, fick's law, the concentration gradient on the diffusion path is the driving force. The longer the tube 2, the longer the moisture diffusion path, and eventually the moisture may reach equilibrium in the middle of the wound tube 2, stopping the transfer.

The working principle is as follows: when the car light during operation in rainy season or high humid external environment, moist steam can only get into the lamp through pipe 2 slowly diffusion inside, according to quality transmission principle fick's law, the concentration gradient on the diffusion path is drive power, because pipe 2 is coiled together, length is longer, when external high humid steam slowly to the inside transmission of lamp, humidity diffusion path is longer, finally reach dynamic balance at the middle steam of pipe 2, transfer rate reduces, in the unable quick lamp that gets into of high humid steam. Meanwhile, the lamp cover 3 is close to the drying agent 7 on one side of the lamp shade 1, water vapor in the lamp can be adsorbed, a plastic piece in the lamp is in a dry environment for a long time, the amount of water after moisture absorption is completed is very small, the water vapor emitted after being heated is also less, if the humidity in the lamp is high, a large amount of water can be absorbed by a plastic material, and when the lamp is in a high-temperature state, the plastic material in the lamp can release a large amount of gaseous water. For example, when the external environment is 30 ℃, the air humidity is 90%, and the external high-humidity water vapor enters the tube 2 through the ventilation plug 8, the external water vapor humidity is about 30 ℃ and 80% RH, the external high-humidity water vapor is transmitted along the tube 2, after the external high-humidity water vapor is transmitted for one circle and two circles, at this time, the moisture content in the tube 2 is further reduced to about 30 ℃ and 70% RH, then the external high humidity water vapor is transmitted along the pipe 2 and circulates back and forth, the water vapor humidity also slowly decreases from 30 ℃ and 70% RH to 30 ℃ and 60% RH, reducing the temperature to 30 ℃ and 40% RH until dynamic equilibrium is reached in the middle of the tube 2, wherein the humidity of water vapor may be only 30 ℃ and 20% RH, absorbing the water vapor by the drying agent 7 when the water vapor is diffused into the lamp through the tube 2, wherein the humidity in the lamp is only 30 ℃ and 10% RH, so that the interior of the lamp is kept in a dry working environment, and the state of low humidity in the lamp can be kept. Therefore, the working environment of electronic components inside the lamp is improved, the service life is prolonged, the service life of the lamp is further prolonged, and the use cost of the LED lamp is reduced. Meanwhile, the probability of forming fog in the lamp can be reduced, the area where the fog is formed is reduced, the fog dissipation speed of the lamp is increased from the side, the function of normal use of the lamp is not influenced, and potential safety hazards are eliminated.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.

Claims

1. An apparatus for controlling humidity in a lamp, comprising: the novel lamp cover comprises a lamp cover (1) and a lamp cover (3) fixed on one side of the lamp cover (1), wherein the lamp cover (1) and the lamp cover (3) are communicated with each other, a pipe (2) is wound and fixed in the lamp cover (3), one opening of the pipe (2) is communicated with an external ventilating bolt (8), and the other opening is located in a lamp cavity.

2. An apparatus for controlling humidity within a lamp as defined in claim 1, wherein: the lamp cover (3) is provided with a through hole (9), and the tube (2) extends out of the lamp cover (3) through the through hole (9).

3. An apparatus for controlling humidity within a lamp as defined in claim 1, wherein: the lamp cover (3) is fixed on the lampshade (1) in a sealing mode through bolts (4).

4. An apparatus for controlling humidity within a lamp as defined in claim 1, wherein: the sealing ring is characterized in that a first sealing groove (5) is formed in the lamp cover (3), a second sealing groove (6) corresponding to the first sealing groove (5) is also formed in the lampshade (1), and the first sealing groove (5) and the second sealing groove (6) are spliced and used for placing the sealing ring.

5. An apparatus for controlling humidity within a lamp as defined in claim 1, wherein: and a plurality of drying agents (7) are fixed on one side of the lamp cover (3) close to the lampshade (1).

6. An apparatus for controlling humidity within a lamp as defined in claim 1, wherein: the length of the tube (2) is not less than 200 mm.