Demisting device for car lamp

Abstract

The utility model relates to the technical field of automobile lamp demisting, in particular to an automobile lamp demisting device which comprises a filtering module, a pressure module, a heater and a controller, the filtering module, the pressure module and the heater are sequentially connected through flexible pipes, and the controller is electrically connected with the pressure module and the heater. External air is filtered by the filtering module and then transmitted to the pressure module, the air is pressurized through the pressure module and conveyed to the heater, and the air is heated by the heater and then connected with an exhaust hole of the automobile lamp through a flexible pipe. External air is treated through the filtering module, and impurities and moisture are removed. And then, the gas is pressurized in the pressure module, realizes constant-pressure output, and is injected into the lamp after being heated by the heater. Heated gas enters from one exhaust hole of the automobile lamp and flows out from the other exhaust hole; the heated gas can quickly promote evaporation of water vapor in the lamp in the flowing process and take away moisture to demist the automobile lamp.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamp defogging, in particular to a vehicle lamp defogging device. Background Art

[0002] With the continuous development of the automotive industry and the improvement of people's living standards, cars have become the primary means of transportation for daily commutes. Headlights are essential components of automobiles, with both high and low beams playing a vital role in driving safety. However, fogging inside the lamps is a common and troublesome problem. Although headlights are typically equipped with two or three vents, which can, to a certain extent, expel a small amount of mist from the lamp interior, when fogging is severe, the vents alone are insufficient to defog. Severe fogging can lead to water accumulation, which can cause the lamp's electronic components to malfunction, ultimately rendering the entire lamp inoperable and seriously impacting driving safety.

[0003] Currently, the primary method for defogging headlights at dealerships involves removing the lamp body, drying out the moisture inside, and replacing the sealing strip. This method has numerous drawbacks. First, removing the lamp body is a complex process requiring specialized technicians and tools, and is time-consuming and labor-intensive. Second, the removal and installation process can easily damage the lamp structure, impacting its performance and lifespan. Furthermore, this method is relatively inefficient and cannot quickly and effectively resolve the problem of fogging, causing inconvenience to car owners and increasing repair costs.

[0004] Therefore, a new type of automobile lamp defogger is needed that can quickly and effectively remove the fog inside the lamp while avoiding damage to the lamp body structure and is simple to operate to meet market demand. Utility Model Content

[0005] The purpose of the utility model is to provide a vehicle lamp defogger device, which can quickly and effectively remove the fog inside the lamp, thereby solving the technical problems in the background technology.

[0006] To achieve the above-mentioned object, the present invention provides the following technical solution: a headlight defogging device, comprising a filter module, a pressure module, a heater, and a controller, wherein the filter module, the pressure module, and the heater are sequentially connected via flexible tubing, and the controller is electrically connected to the pressure module and the heater, respectively;

[0007] The filter module is located before the pressure module. The external air is filtered by the filter module and then transmitted to the pressure module. The air is pressurized by the pressure module and transmitted to the heater. After being heated by the heater, the air is connected to the exhaust hole of the car light through a flexible pipe.

[0008] Furthermore, the pressure module includes a pressure pump and a pressure sensor arranged at the output end of the pressure pump; the pressure pump and the filter module are connected by a flexible pipe.

[0009] Furthermore, the filtration module includes an air filter, a dryer and a humidity sensor connected in sequence; the external air is filtered by the air filter and dehumidified by the dryer in sequence and then transmitted to the pressure module; the humidity sensor is used to monitor the humidity of the air.

[0010] Furthermore, the heater is arranged after the pressure pump; the heater is a PTC thermistor or a ceramic heating rod, and the air is heated when it passes through the heater after being accelerated by the pressure pump.

[0011] Furthermore, a one-way valve is provided on the flexible pipe between the heater and the exhaust hole of the vehicle lamp.

[0012] Furthermore, it also includes a safety protection module; the safety protection module is provided with an overvoltage protection circuit and an overheating protection circuit; the overvoltage protection circuit is used to cut off the power supply of the booster pump when overvoltage occurs, and the overheating protection circuit is used to shut down the heater when overheating occurs.

[0013] Beneficial effects

[0014] The vehicle lamp defogger of the present invention first processes the external air through a filter module to remove impurities and moisture, providing high-quality gas for subsequent defogger. The gas is then pressurized in a pressure module to achieve a constant pressure output, and then heated by a heater before being injected into the lamp. The heated gas enters from one exhaust hole of the vehicle lamp and flows out from another exhaust hole. During the flow process, the heated gas can quickly promote the evaporation of water vapor in the lamp and carry away moisture, thereby defoggering the vehicle lamp. The controller can also regulate the gas flow rate output by the pressure module. In the early stages of defoggering, the flow rate is increased to quickly dispel the fog, and in the later stages, the flow rate is reduced to accurately remove residual water vapor, thereby quickly removing the water mist in the lamp and improving the defogger efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 It is a schematic diagram of the vehicle lamp defogger device disclosed in the utility model.

[0017] In the picture:

[0018] 1-pressure module, 101-pressure pump, 102-pressure sensor,

[0019] 2- filtration module, 201- air filter, 202- dryer, 203- humidity sensor,

[0020] 3-heater, 4-flexible tubing, 5-headlight. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0022] In order to achieve the above purpose, the present invention provides the following technical solutions: Figure 1 As shown, a headlight defogger includes a filter module 2, a pressure module 1, a heater 3 and a controller (the controller is not shown in the figure). The filter module 2, the pressure module 1 and the heater 3 are connected in sequence through a flexible tube 4, and the controller is electrically connected to the pressure module 1 and the heater 3 respectively; these components are connected in sequence through the flexible tube 4 to form a complete defogger system.

[0023] The filter module 2 is located before the pressure module 1. The pressure module 1 provides suction for the filter module 2, absorbing external air, filtering it through the filter module 2, and then transmitting it to the pressure module 1. The air is pressurized by the pressure module 1 and transmitted to the heater 3. After being heated by the heater 3, the air is connected to the exhaust hole of the headlight 5 through the flexible pipe 4. It should be noted that the headlight 5 generally has more than two exhaust holes. The hot air flow generated by this device enters from one exhaust hole and flows out from the other exhaust holes, completing the demisting work during the flow process.

[0024] The controller plays a regulatory role. It adjusts the output power of the pressure module 1 and the heater 3 according to the preset flow parameters and feedback data. In the early stage of demisting, the output flow of the pressure module 1 is increased according to the fog concentration and cavity volume inside the headlight 5 to quickly disperse the fog. In the later stage of demisting, the flow is reduced to accurately remove residual water vapor, ensuring that the gas is evenly and stably injected into the corners of the headlight 5d, preventing local airflow impact from damaging the delicate internal structure of the lamp or incomplete demisting due to insufficient flow, ensuring efficient and stable demisting throughout the process.

[0025] Furthermore, the pressure module 1 includes a pressure pump 101 and a pressure sensor 102 provided at the output end of the pressure pump 101 ; the pressure pump 101 and the filter module 2 are connected via a flexible pipe 4 .

[0026] The booster pump 101 is a diaphragm or plunger electric booster pump 101 , whose motor is connected to a controller. The controller sets the target pressure value of the booster pump 101 , and the controller adjusts the output power of the booster pump 101 according to the feedback signal of the pressure sensor 102 .

[0027] The pressure sensor 102 is a piezoresistive pressure sensor 102. The pressure sensor 102 provides real-time feedback of the pressure signal to the controller for regulating the operation of the motor of the pressure pump 101 to achieve constant pressure output. This allows precise control of the gas pressure as needed to meet different demisting and detection requirements.

[0028] Furthermore, the filter module 2 includes an air filter 201, a dryer 202, and a humidity sensor 203 connected in sequence; the external air is filtered by the air filter 201 and dehumidified by the dryer 202, and then transmitted to the pressure module 1; the humidity sensor 203 is used to monitor the humidity of the dried air;

[0029] The air filter 201 is used to remove dust and particles in the air. The air filter 201 includes a fiber filter and an activated carbon layer adsorption layer. This multi-layer structure can effectively filter out various impurities in the air and ensure that the air entering the device is relatively pure.

[0030] The dryer 202 is used to remove moisture and is provided with a humidity sensor 203 to monitor the working status of the dryer 202. This ensures that the air quality entering the device meets high standards, is free of impurities such as dust, and is dry and moisture-free.

[0031] Furthermore, heater 3 is provided after pressure pump 101. Heater 3 is a PTC thermistor or ceramic heating rod. After being accelerated by pressure pump 101, the gas passes through heater 3 and is heated. By controlling the gas temperature, the evaporation and discharge of water vapor can be better promoted, thereby improving the demisting efficiency.

[0032] Furthermore, a one-way valve is provided on the flexible pipe 4 between the heater 3 and the exhaust hole of the headlight 5; the one-way valve is a spring-loaded one-way valve. The one-way valve configured on the pipeline can ensure that the gas can only flow in one direction, prevent gas backflow, and ensure the normal operation of the defogger.

[0033] Furthermore, the system also includes a safety protection module, which includes an overvoltage protection circuit and an overheating protection circuit. The overvoltage protection circuit is used to cut off the power supply to the booster pump 101 in the event of overvoltage, and the overvoltage protection circuit is used to shut down the heater 3 in the event of overheating. The overvoltage protection circuit uses a combination of a varistor, a transient suppression diode, and an intelligent circuit breaker. The overheating protection circuit uses an NTC thermistor to monitor component temperature and shut down the heater 3 or reduce its load if the set temperature is exceeded.

[0034] The working principle and process are as follows:

[0035] When the vehicle lamp 5 needs to be defogged, the flexible pipe 4 of the device is first connected to the vent hole of the vehicle lamp 5 .

[0036] The device is started, and the filter module 2 starts working. The air filter 201 removes dust and particles in the air, and the dryer 202 removes moisture. The processed air enters the pressure module 1.

[0037] In the pressure module 1, the pressure pump 101 starts working according to the target pressure value set by the controller, and the pressure sensor 102 feeds back the pressure signal in real time. The controller adjusts the output power and speed of the pressure pump 101 according to the feedback signal to achieve constant pressure output.

[0038] The pressurized gas enters the heater 3 , which heats the gas according to the control of the controller. The heated gas is then injected into the interior of the headlight 5 through the flexible pipe 4 .

[0039] During the demisting process, the controller adjusts the gas flow rate according to factors such as the fog concentration of the lamp and the cavity volume. In the early stage, the flow rate is increased to quickly disperse the fog, and in the later stage, the flow rate is reduced to accurately remove residual water vapor.

[0040] At the same time, the safety protection module monitors the working status of the device in real time, and takes protective measures in time when overvoltage or overheating occurs, such as cutting off the power supply of the pressure pump 101 or turning off the heater 3.

[0041] When the demisting is completed, the device is turned off and the connection between the flexible pipe 4 and the lamp is removed.

[0042] The device's operation is relatively simple. Simply connect the flexible tubing (4) to the vent of the headlight (5) and activate the device to automatically complete a series of operations, including air filtration, pressurization, heating, and demisting. This eliminates the need for specialized technicians to perform complex operations, making it convenient and practical.

[0043] The device of the present application can also be used to detect the airtightness of the headlight 5;

[0044] The specific operation process of testing the airtightness of the headlight 5 is as follows:

[0045] The flexible tube 4 of the device is connected to one of the vent holes of the vehicle lamp 5, and an air pressure detector is set on one of the other vent holes, while the other vent holes are blocked.

[0046] Start the device, inflate the lamp 5, and observe the changes in air pressure in the lamp 5. If the air pressure can remain stable, it means that the lamp is sealed properly; if the air pressure drops significantly, it means that there is a sealing problem in the lamp and further inspection and repair are required.

[0047] The embodiments of the present invention are provided for purposes of illustration and description and are not intended to be exhaustive or to limit the present invention to the disclosed forms. Many modifications and variations will be apparent to those skilled in the art. The embodiments are selected and described to better illustrate the principles and practical applications of the present invention and to enable those skilled in the art to understand the present invention and design various embodiments with various modifications suitable for specific applications.

Claims

1. A vehicle lamp defogger, characterized in that: The invention comprises a filter module (2), a pressure module (1), a heater (3) and a controller, wherein the filter module (2), the pressure module (1) and the heater (3) are connected in sequence via a flexible pipe (4), and the controller is electrically connected to the pressure module (1) and the heater (3) respectively; The filter module (2) is located before the pressure module (1). External air is filtered by the filter module (2) and then transmitted to the pressure module (1). The air is pressurized by the pressure module (1) and then transmitted to the heater (3). After being heated by the heater (3), the air is connected to the exhaust hole of the vehicle lamp (5) through the flexible pipe (4).

2. The vehicle lamp defogger device according to claim 1, characterized in that: The pressure module (1) comprises a pressure pump (101) and a pressure sensor (102) arranged at the output end of the pressure pump (101); the pressure pump (101) and the filter module (2) are connected via a flexible pipe (4).

3. The vehicle lamp defogger device according to claim 1, characterized in that: The filter module (2) comprises an air filter (201), a dryer (202) and a humidity sensor (203) connected in sequence; external air is filtered by the air filter (201) and dehumidified by the dryer (202) in sequence before being transmitted to the pressure module (1).

4. The vehicle lamp defogger device according to claim 1, characterized in that: The heater (3) is arranged after the pressure pump (101); the heater (3) is a PTC thermistor or a ceramic heating rod, and the air is heated when it passes through the heater (3) after being accelerated by the pressure pump (101).

5. The vehicle lamp defogger device according to claim 4, characterized in that: A one-way valve is provided on the flexible pipe (4) between the heater (3) and the exhaust hole of the vehicle lamp (5).

6. The vehicle lamp defogger device according to claim 1, characterized in that: It also includes a safety protection module; the safety protection module is provided with an overvoltage protection circuit and an overheating protection circuit; the overvoltage protection circuit is used to cut off the power supply of the pressure pump (101) when overvoltage occurs, and the overheating protection circuit is used to shut down the heater (3) when overheating occurs.

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