CN216897129U - Fog system is prevented to vehicle headlamps - Google Patents

Abstract

The utility model discloses an anti-fogging system for an automobile headlamp, which comprises a radiating fan, a radiator, an air gathering accelerator, an air guide pipe, an exhaust pipe, a humidity sensor and a controller, wherein the air gathering accelerator comprises a horn-shaped air gathering cavity, an air guide pipe joint connected with the small end of the air gathering cavity and an electrically driven air door arranged in the air guide pipe joint, the large end of the air gathering cavity faces the front side of the radiator, the radiating fan is opposite to the back side of the radiator, one end of the air guide pipe is connected with the air guide pipe joint and is communicated with the air gathering cavity through the electrically driven air door, the other end of the air guide pipe extends into the headlamp, the exhaust pipe is arranged on a lamp body of the headlamp, and the humidity sensor is arranged in the headlamp. The humidity sensor is electrically connected with the controller, and the controller is electrically connected with the cooling fan and the electric drive air door. The utility model can better avoid the fogging of the headlamp, and simultaneously saves energy consumption and reduces cost.

Description

Fog system is prevented to vehicle headlamps

Technical Field

The utility model belongs to the field of automobile parts, and particularly relates to an anti-fogging system for an automobile headlamp.

Background

The material used for the lens of the motor vehicle headlamp is transparent PC, and when the air humidity in the lamp is higher, the PC is easy to condense on the surface of the lens to form fog. Because the internal space of the headlamp is smaller, especially the existing lamp is more and more narrow in shape, the air flow is slower, fog is not easy to dissipate, water drops are finally formed after a long time and are hung on the inner wall of the lens, the lighting effect and the product appearance of the headlamp are influenced, and the lamp after sale in the market has a fog fault. Therefore, there is a need for a headlamp anti-fogging system.

CN206540037U discloses an anti-fogging lamp and a vehicle having the same, which uses the wind force in the driving process of the vehicle to accelerate the circulation inside and outside the lamp body, and includes external devices such as an exhaust pump and a fan, resulting in a complex system, and space arrangement limitations of different vehicle types, higher cost, not beneficial to industrialization promotion, and not suitable for all vehicles.

Disclosure of Invention

The utility model aims to provide an anti-fogging system of an automobile headlamp, which can better avoid fogging of the headlamp, save energy consumption and reduce cost.

The utility model relates to an anti-fogging system for an automobile headlamp, which comprises a radiating fan, a radiator, an air gathering accelerator, an air guide pipe, an exhaust pipe, a humidity sensor and a controller, wherein the air gathering accelerator comprises a horn-shaped air gathering cavity, an air guide pipe joint connected with the small end of the air gathering cavity and an electrically driven air door arranged in the air guide pipe joint, the large end of the air gathering cavity faces the front side of the radiator, the radiating fan is opposite to the back side of the radiator, one end of the air guide pipe is connected with the air guide pipe joint and is communicated with the air gathering cavity through the electrically driven air door, the other end of the air guide pipe extends into the headlamp, the exhaust pipe is arranged on a lamp body of the headlamp, and the humidity sensor is arranged in the headlamp. The humidity sensor is electrically connected with the controller, and the controller is electrically connected with the cooling fan and the electric driving air door.

The humidity sensor sends a detected air humidity signal in the headlamp to the controller, when the air humidity in the headlamp is too high (for example, the air humidity in the headlamp is greater than a preset humidity threshold), the controller controls the cooling fan to be turned on, controls the electric driving air door to be turned on, high-speed air blown out by the cooling fan is changed into high-speed high-temperature low-humidity air after passing through the radiator, enters the horn-shaped air collecting cavity to be accelerated again, enters the air guide pipe through the opened electric driving air door and the air guide pipe joint, and then enters the headlamp to accelerate the internal air circulation of the headlamp, reduce the air humidity, blow the surface of a lens of the headlamp, dissipate fog (prevent fogging), and then discharge the high-speed low-temperature high-humidity air out of the headlamp through the exhaust pipe.

Preferably, the air collection accelerator is mounted on the front impact beam.

Preferably, a one-way valve is installed on the air guide pipe close to the front cover lamp, and filter cotton is arranged in the air guide pipe close to an air inlet of the one-way valve. The one-way valve enables the air to flow in one direction only, and the air in the headlamp can be effectively prevented from flowing backwards. The filter cotton can filter foreign matters such as dust, mould and the like in the air, and the foreign matters are prevented from polluting the headlamp.

Preferably, the lowest point of the lamp body is connected with a drain pipe. The larger water drops condensed on the lens drop under the action of high-speed gas and are then discharged by a water discharge pipe.

The utility model has the following effects:

(1) the high-speed high-temperature low-humidity gas blown out by the cooling fan and passing through the radiator is guided into the headlamp, so that the circulating flow speed of the air in the headlamp is increased, the air humidity is reduced, the fog of the headlamp is avoided, and the illumination quality of a front cover lamp is ensured.

(2) The air introduced into the headlamp comes from a cooling fan and a radiator of the air conditioning system, the whole air conditioning system does not need to be opened, the energy consumption is saved, the cost is reduced, the carrying and configuration on different vehicle types are easy, and the industrial popularization is facilitated.

(3) The wind collecting cavity of the air collecting accelerator is in a horn shape, so that wind blown by the cooling fan can be collected, and the wind is further accelerated by utilizing the horn-shaped structure.

(4) Set up the electric drive air door, when not dehumidifying the defogging at ordinary times, the electric drive air door is in the closed condition, can effectually block that external debris, dust etc. get into in the air duct.

Drawings

FIG. 1 is an exploded view of the present invention.

Fig. 2 is an electrical schematic block diagram of the present invention.

FIG. 3 is a schematic view of the connection between the air collecting accelerator and the air duct according to the present invention.

FIG. 4 is a schematic view showing the connection of the air guide duct, the check valve and the head lamp according to the present invention.

FIG. 5 is a schematic view of the connection of the head lamp and the exhaust pipe according to the present invention.

FIG. 6 is a schematic view of the connection of the head lamp to the drain pipe in the present invention.

Detailed Description

The automotive headlamp anti-fogging system shown in fig. 1 to 6 includes a radiator fan 1, a radiator 2, an air collecting accelerator 3, a duct 4, an exhaust duct 5, a drain duct 12, a humidity sensor 6, and a controller 7. The cooling fan 1 and the radiator 2 are cooling fans and radiators in an automobile air conditioning system, and the controller 7 is a vehicle body controller (i.e., BCM). The air focusing accelerator 3 is mounted on the front impact beam 9. The air collecting accelerator 3 comprises a trumpet-shaped air collecting cavity 31, an air guide pipe joint 33 connected with the small end of the air collecting cavity 31 and an electric driving air door 32 installed in the air guide pipe joint 33. The big end of the wind collecting cavity 31 faces the front of the heat sink 2, and the heat dissipating fan 1 faces the back of the heat sink 2. One end of the air guide pipe 4 is connected with an air guide pipe joint 33 and is communicated with the air collecting cavity 31 through an electric driving air door 32, the other end of the air guide pipe 4 extends into the headlamp 8, a one-way valve 10 is installed at a position, close to the front cover lamp 8, on the air guide pipe 4, and filter cotton 11 is arranged at a position, close to an air inlet of the one-way valve 10, in the air guide pipe 4. The exhaust pipe 5 is installed on the lamp body 81 of the head lamp 8 and communicates with the inner cavity of the head lamp 8 for exhausting gas inside the head lamp 8, and the drain pipe 12 is installed at the lowest point of the lamp body 81 and communicates with the inner cavity of the head lamp 8 for exhausting water droplets inside the head lamp 8. The humidity sensor 6 is installed in the head lamp 8 for detecting the humidity of air in the head lamp 8. The humidity sensor 6 is electrically connected to the controller 7, and the controller 7 is electrically connected to the radiator fan 1 and the electrically driven damper 32.

The humidity sensor 6 sends a detected air humidity signal in the headlamp 8 to the controller 7, when the air humidity in the headlamp 8 is too high (for example, the air humidity in the headlamp 8 is greater than a preset humidity threshold), the controller 7 controls the radiator fan 1 to be opened, controls the electric drive damper 32 to be opened, controls the high-speed gas blown out by the radiator fan 1 to be changed into high-speed high-temperature low-humidity gas after passing through the radiator 2, enters the horn-shaped air collecting cavity 31 to be accelerated again, enters the air guide pipe 4 through the opened electric drive damper 32 and the air guide pipe joint 33, the high-speed high-temperature low-humidity gas filters out foreign matters such as dust, mold and the like contained in the gas through the filter cotton 11 and then is led into the air inlet of the check valve 10, the blocking cover of the check valve 10 is adjusted from a closed state to an open state under the effect of air pressure difference between the left side and the right side, and the high-speed headlamp high-temperature low-humidity gas is led into the headlamp 8, the air inside the headlight 8 is circulated, and the inner surface of the lens 82 is blown to remove the fog while the humidity of the air inside the headlight 8 is reduced. The air circulated and blown in the head lamp 8 becomes high-speed, low-temperature and high-humidity air, and the air is discharged out of the head lamp 8 through the exhaust pipe 5, thereby completing the dehumidifying and defogging process. The exhaust pipe 5 has a labyrinth structure with its opening facing downward, and prevents outside high-humidity air or water droplets from directly entering the headlamp 8. If the humidity of the air inside the headlight 8 is too high, or water enters the lamp or large water drops are collected on the inner surface of the lens 82, the introduced high-speed high-temperature low-humidity gas blows the water drops, and the water drops are discharged from the water discharge pipe 12.

When the dehumidification and demisting operation is not carried out at ordinary times, the controller 7 controls the electric driving air door 32 to be in a closed state, and external sundries, dust and the like can be effectively prevented from entering the air guide pipe. When the dehumidification and demisting operation is not carried out at ordinary times, no air pressure difference exists on two sides of the blocking cover of the check valve 10, and the check valve 10 is in a closed state under the action of gravity.

Claims (4)

1. The utility model provides a vehicle headlamps prevents fogging system which characterized in that: the air-conditioning system comprises a cooling fan (1), a radiator (2), an air gathering accelerator (3), an air guide pipe (4), an exhaust pipe (5), a humidity sensor (6) and a controller (7), wherein the air gathering accelerator (3) comprises a trumpet-shaped air gathering cavity (31), an air guide pipe joint (33) connected with the small end of the air gathering cavity (31) and an electric driving air door (32) installed in the air guide pipe joint (33), the large end of the air gathering cavity (31) faces the front face of the radiator (2), the cooling fan (1) is opposite to the back face of the radiator (2), one end of the air guide pipe (4) is connected with the air guide pipe joint (33) and is communicated with the air gathering cavity (31) through the electric driving air door (32), the other end of the air guide pipe (4) extends into a headlamp (8), the exhaust pipe (5) is installed on a lamp body (81) of the headlamp (8), the humidity sensor (6) is arranged in the headlamp (8); the humidity sensor (6) is electrically connected with the controller (7), and the controller (7) is electrically connected with the cooling fan (1) and the electric driving air door (32).

2. The automotive headlamp anti-fogging system according to claim 1, characterized in that: the air gathering accelerator (3) is mounted on the front anti-collision beam (9).

3. The automotive headlamp anti-fogging system according to claim 1 or 2, characterized in that: a one-way valve (10) is mounted on the air guide pipe (4) close to the headlamp (8), and filter cotton (11) is arranged in the air guide pipe (4) close to an air inlet of the one-way valve (10).

4. The automotive headlamp anti-fogging system according to claim 3, characterized in that: the lowest point of the lamp body (81) is connected with a drain pipe (12).

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