CN114370624A - Device for controlling humidity in lamp - Google Patents

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

A device for controlling humidity in a lamp

technical field

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

Background technique

At present, there are more and more electronic components in automobile lamps, and the moisture in the lamp is too high, which will affect the life of the electronic components on the one hand, and on the other hand, the inside of the lampshade (1) will generate fog, which will lead to customer complaints. Therefore, control the air content in the lamp. The amount of water is becoming more and more important. Automotive lamps are generally designed with ventilating components to balance the pressure difference, so the moisture inside and outside the lamp can diffuse through the components. When the lamp is placed in a high-humidity environment, after a period of time, the lamp will also reach high humidity, and the internal plastic parts continue to absorb moisture. After the parts are heated, the air moisture in the lamp further increases.

SUMMARY OF THE INVENTION

In order to solve the problem that the moisture content of the air in the lamp cannot be controlled, fog will be generated and the life of electronic components will be affected, the present invention provides a device for controlling the humidity in the lamp, including a lampshade and a lamp cover fixed on one side of the lampshade , the lampshade and the lamp cover communicate with each other, and a pipe is coiled and fixed in the lamp cover, one opening of the pipe is communicated with the external ventilation plug, and the other opening is located in the lamp cavity.

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 installation and removal of the lamp cover, the lamp cover is sealed and fixed on the lampshade through bolts.

Preferably, a sealing groove 1 is formed on the lamp cover, and a sealing groove 2 corresponding to the sealing groove 1 is also formed on the lamp cover. The sealing groove 1 and the sealing groove 2 are spliced together to place the sealing groove. lock up. The sealing ring ensures the tightness between the lamp cover and the lamp cover, prevents external water vapor from entering between the lamp cover and the lamp cover, and improves the humidity in the lamp.

Further, a plurality of desiccants are fixed on the side of the lamp cover close to the lamp shade. The desiccant can absorb the water vapor inside the lamp, so that the plastic parts in the lamp can be kept in a dry environment for a long time.

Preferably, the length of the tube is not less than 200mm. Using the principle of mass transfer (Fick's law), the concentration gradient along the diffusion path is the driving force. The longer the tube, the longer the humidity diffusion path, and eventually the water vapor can reach a dynamic equilibrium in the middle of the wound tube, and the water vapor transmission rate decreases.

Beneficial effects: The present invention utilizes the principle of mass transfer (Fick's law), by adding a wound tube and a desiccant with high hygroscopic performance inside the lamp, because the winding tube is long, when the external high-humidity water vapor slowly transfers into the lamp, The humidity diffusion path is long, and finally in the middle of the winding tube, the water vapor reaches a dynamic balance, reducing the water vapor transmission rate, which can effectively control the amount of water vapor in the lamp, control the humidity in the lamp, prolong the life of electronic components, and reduce the risk of fog in the lamp.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the present invention;

Fig. 2 is the schematic diagram of the lampshade structure of the present invention;

Figure 3 is a schematic view of the structure of the lamp cover of the present invention;

Fig. 4 is the internal structure diagram of one side of the lamp cover of the present invention;

5 is a schematic diagram of the internal structure of the other side of the lamp cover of the present invention;

1. Lampshade; 2. Tube; 3. Lamp cover; 4. Bolt; 5. Sealing groove 1; 6. Sealing groove 2; 7. Desiccant; 8. Breathable plug; 9. Through hole.

Detailed ways

In order to make those skilled in the art better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only Embodiments are part of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

Reference herein to "one embodiment" or "an embodiment" refers to a particular feature, structure, or characteristic that may be included in at least one implementation of the present invention. In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention. The invention and simplified description do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as limiting the invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. Also, the terms "first," "second," etc. are used to distinguish between similar objects, and are not necessarily used to describe a particular order or precedence. It is to be understood that the data so used may be interchanged under appropriate circumstances such that the embodiments of the invention described herein can be practiced in sequences other than those illustrated or described herein.

Example 1

A device for controlling humidity in a lamp, comprising a lampshade 1 and a lamp cover 3 fixed on one side of the lampshade 1, the lampshade 1 and the lamp cover 3 are communicated with each other, and a tube 2 is coiled and fixed in the lamp cover 3, so One opening of the tube 2 communicates with the external ventilation plug 8, and the other opening is located in the lamp cavity. Moisture is in liquid state and gaseous state, and liquid water can enter the tube 2 . The gaseous water molecules are very small and can pass through the vent plug 8 and the tube 2. At this time, the internal and external exchange is carried out through diffusion and pressure, and finally the water vapor balance is achieved. The ventilation plug 8 is generally set in a lower temperature environment to prevent the increase of the high temperature and high humidity water vapor entering the tube 2 and increase the humidity in 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 .

In order to facilitate disassembly and installation, the lamp cover 3 is sealed and fixed on the lampshade 1 through bolts 4 .

The lamp cover 3 is provided with a sealing groove 1 5, and the lamp cover 1 is also provided with a sealing groove 2 6 corresponding to the sealing groove 1 5. The sealing groove 1 5 and the sealing groove 2 6 are spliced together. For placing seals. The sealing ring ensures the tightness between the lamp cover 3 and the lamp cover 1, prevents external water vapor and the like from entering between the lamp cover 1 and the lamp cover 3, and improves the humidity in the lamp.

A plurality of desiccants 7 are fixed on the side of the lamp cover 3 close to the lamp shade 1 . The desiccant 7 can absorb the water vapor inside the lamp, so that the plastic parts in the lamp are kept in a dry environment for a long time.

The length of the tube 2 is not less than 200mm. Using Fick's law, the principle of mass transfer, the concentration gradient along the diffusion path is the driving force. The longer the tube 2 is, the longer the humidity diffusion path is, and finally the water vapor can reach equilibrium in the middle of the wound tube 2 and stop transmission.

Working principle: When the lamp works in the rainy season or in the high-humidity external environment, the moist water vapor can only slowly diffuse into the interior of the lamp through the tube 2. According to the principle of mass transfer, the concentration gradient on the diffusion path is the driving force. Because the tubes 2 are coiled together and have a long length, when the external high-humidity water vapor slowly transfers to the inside of the lamp, the humidity diffusion path is long, and finally the water vapor reaches a dynamic balance in the middle of the tube 2, and the transfer rate decreases, and the high-humidity water vapor cannot be Get inside the light quickly. At the same time, the desiccant 7 on the side of the lamp cover 3 close to the lampshade 1 can absorb the water vapor inside the lamp, so that the plastic parts inside the lamp are kept in a dry environment for a long time. When the humidity inside the lamp is high, the plastic material will absorb a large amount of water. When the lamp is in a high temperature state, the plastic material inside the lamp will release a large amount of gaseous water. For example, when the external environment is 30°C, the air humidity is 90%, and the external high-humidity water vapor enters the pipe 2 through the ventilation plug 8. At this time, the external water vapor humidity is still about 30°C and 80% RH, and the external high-humidity water vapor then passes along the pipe 2. , after passing one or two laps, the humidity of the water vapor inside the tube 2 further decreased, about 30°C, 70% RH, and then the external high-humidity water vapor then passed along the tube 2, and the reciprocating cycle, the water vapor humidity also slowly decreased, from 30°C, 70%RH drops to 30°C, 60%RH, and then drops to 30°C, 40%RH until dynamic equilibrium is reached in the middle of tube 2, at this time, the water vapor humidity may only be 30°C, 20%RH, and then through the tube 2 When diffused into the lamp, after being adsorbed by the desiccant 7, the humidity inside the lamp is only 30°C and 10% RH, so that the inside of the lamp keeps a dry working environment, so that the humidity inside the lamp can be kept low. Thereby, the working environment of the electronic components inside the lamp is improved, the service life is prolonged, the service life of the lamp is prolonged, and the use cost of the LED lamp is reduced. At the same time, it can also reduce the probability of fog formation inside the lamp, reduce the area of fog formation, and increase the speed of the lamp to eliminate fog from the side, without affecting the normal use of the lamp, and eliminating potential safety hazards.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection of the present invention. within the range.

Claims (6)

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.

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