CN117183988A - Defogging device and method for front-view camera in vehicle and vehicle - Google Patents

Abstract

A defogging device for forward looking camera in car, including air-guiding module and defogging module, defogging module sets up in air conditioning system, and air-guiding module is connected with defogging module and lens hood respectively, and air-guiding module is in the leading-in lens hood of defogging wind that defogging module produced. This a defogging device for looking camera before car, through the wind-guiding module that adds, with clean dry high-speed air current accurate, send fast to the foggy point, closed environment has blocked external dust's invasion in the lens hood when avoiding the light leak, has promoted the quality of camera perception image, optimizes and utilizes current air conditioning system, reduces the energy consumption, interior trim casing compact structure is favorable to miniaturization and interior trim outward appearance optimization, and the technology is succinct, easily realizes. The invention also provides a defogging method and a vehicle.

Description

Defogging device and method for front-view camera in vehicle and vehicle

Technical Field

The invention relates to the technical field of defogging of a front-view camera in a vehicle, in particular to a defogging device and method for the front-view camera in the vehicle and the vehicle.

Background

With the development of intelligent driving automobiles, the auxiliary driving functions of the automobiles are mature, the application scenes are wider and wider, as shown in fig. 1, wherein a front-view camera is used as one of the core hardware of the driving auxiliary functions, and the front-view camera also has to become the main stream configuration of the intelligent driving automobiles, so that the safety level requirements are also stricter. However, due to the influence of the driving environment, the front-view camera often influences the recognition effect of the camera due to the problems of fog, dust fall and the like, so that false alarm, missing alarm and even exit of the auxiliary driving function are caused, and potential hazards are brought to safe driving.

In the prior art, as shown in fig. 1, many defogging methods are to defog by using air-conditioning air blown out from an air-conditioning air outlet at an instrument desk, a defogging target area is mainly a front windshield and a camera view angle (FOV) area, but a front view camera is far away from the air-conditioning air outlet, most of the air-conditioning air can be blocked and guided by a hood and an interior trim shell of the front view camera, the air quantity actually entering the interior area of the hood is small, and the defogging effect cannot be achieved rapidly and accurately; in addition, this defogging method requires that the hood and the interior housing must be kept in an open, unsealed state, generally requires that the hood and the windshield maintain a certain gap (e.g., 3mm or more), that the camera lens diameter and the hood maintain a gap of 5mm or more, and that the interior housing and the hood also maintain a larger gap, or requires that the interior housing structure be designed with a plurality of louvers (vents) to ensure that as much air-conditioning wind as possible enters to generate air convection, which causes the following problems: light leakage phenomenon exists, and poor effects such as ghosting, parasitic light and the like can be caused by imaging of a camera lens, so that the perception performance is influenced; dust and instrument desk and air conditioner air outlet in severe environment can enter the intersecting line area of FOV and front windshield along with air conditioner wind, and long-time combination with fog in glass produces intractable stains, which are difficult to clean, influence the perception and identification performance of a camera, and can cause false alarm, missing alarm and even exit of auxiliary driving functions, thus causing driving safety hidden trouble; certain angles in the vehicle may be used for seeing interior non-exterior parts or non-exterior structures through the gaps, ventilation holes, shutters and the like, such as primary colors of camera metal shells (die-cast aluminum), front view camera supports and light shields (non-bitten surfaces), screws and the like, and affecting the appearance of the interior; more space needs to be reserved between the interior shell and the light shield, and the interior shell is often large in size and is unfavorable for miniaturization.

In the prior art, as shown in fig. 1, if a heating wire is embedded into glass for heating and defogging, a heating system is required to be designed, the hardware cost and the software development cost are increased, the front windshield manufacturing process is complex, the defogging is limited on the surface of the windshield, the defogging effect on the surface of a lens of a camera glass is not ideal, finally if the heating temperature is too high and too long, the expansion and micro deformation of glass in the intersection area of the camera angle (FOV) and the front windshield can be caused, the glass diopter in the intersection area of the camera angle (FOV) and the front windshield can be changed, the resolution of the camera MTF (Modulation Transfer Function) can be reduced, the visual recognition effect is affected, the visual perception function is further reduced, and the heating wire is arranged in the intersection area of the camera angle (FOV) and the front windshield, and can bring a certain interference to the perception recognition.

Disclosure of Invention

In view of the above, the invention provides a defogging device and method for a front view camera in a vehicle, and the vehicle, wherein an independent defogging module is optimally arranged in an air conditioning system, defogging wind is guided into a light shield through an air guide module to rapidly defog, and an outlet of the air guide module is reasonably arranged in the light shield according to the positions of a lens and an effective area of the intersecting line of a FOV and a front windshield to realize accurate defogging.

The defogging device for the front-view camera in the vehicle comprises an air guide module and a defogging module, wherein the defogging module is arranged in an air conditioning system and is respectively connected with the defogging module and a light shield, and defogging air generated by the defogging module is guided into the light shield by the air guide module.

According to the defogging device for the front-view camera in the vehicle, through the additionally arranged air guide module, clean and dry high-speed air flow is accurately and quickly conveyed to a fogging point, the closed environment in the light shield avoids light leakage and simultaneously blocks invasion of external dust, the quality of a perceived image of the camera is improved, a heating wire is not needed, an existing air conditioning system is optimized and utilized, energy consumption is reduced, the degradation of the resolving capability of a junction line area between a field angle FOV of the camera of the front-view camera and a front windshield caused by improper arrangement of the heating wire is avoided, more shutters are not needed to be designed, because defogging air of the air conditioner does not enter from the shutters and the bottom air inlet of the inner-trim shell, the size space of the inner-trim shell is larger, and the inner non-appearance parts are not easy to see from the shutters, so that the inner-trim shell is compact in structure, beneficial to miniaturization and inner-trim appearance optimization, and simple process is easy to realize.

In an embodiment, the air guide module includes the air pipe who is connected with defogging module and the air guide mouth subassembly of being connected with the air pipe, and wherein, the air pipe passes A post and extends to the lens hood direction, and the air guide mouth subassembly sets up on the lens hood.

Specifically, export air pipe all the way through air conditioning system optimal design, import to wind-guiding mouth subassembly, reasonable setting is under the lens hood through wind-guiding mouth subassembly to correspond the setting with the position of the effective region of lens and FOV and front windshield intersection line according to the front view camera in the lens hood, accurate defogging.

In one embodiment, an air filter module is disposed on the vent conduit proximate to the outlet of the demisting module.

The independent demisting air with the optimal design in the air conditioning system can be purified again by the aid of the air filtering module, and clean and dry high-speed air flows are produced and accurately and quickly delivered into the light shield through the ventilating duct and the air guide nozzle assembly, so that dust and water vapor invasion in the external environment is greatly blocked. Specifically, the air filter module is an air filter.

In an embodiment, the air guide nozzle assembly comprises an air guide nozzle, and a glass air guide opening and a lens air guide opening are respectively arranged on the air guide nozzle, wherein the glass air guide opening guides defogging air to the inner surface of the front windshield, and the lens air guide opening guides defogging air to the lens surface of the front-view camera.

Specifically, the wind guiding nozzle component is arranged right below the light shield and consists of a wind guiding nozzle, a locking nut and a clamp spring, the wind guiding nozzle passes through the upper part of the light shield, the locking nut is tightly locked on a boss at the lower side of the light shield, the clamp spring and a port of a ventilating duct are sleeved at the lower end of the wind guiding nozzle in sequence, the clamp spring is locked, and air flow is respectively and rapidly and accurately guided to the inner surface of the front windshield and the lens surface of the front camera through a glass air guide opening and a lens air guide opening of the wind guiding nozzle.

In an embodiment, the defogging device further comprises a pressure relief module arranged on the light shield for relieving pressure of a sealing space formed by enclosing the light shield, the front windshield and the front-view camera.

Specifically, the air flow entering the intersection area of the FOV of the front-view camera and the front windshield in the light shield through the air guide nozzle is used for accurately and rapidly defogging and dedusting, and when the air pressure in the sealing area rises to the limit pressure threshold value of the pressure relief module, the pressure relief module arranged beside the front-view camera is opened for internal pressure relief, so that defogging air flow is well ensured to quickly and accurately eliminate fog and possible dust fall.

In one embodiment, the pressure relief module is a one-way vent valve.

Adopt one-way discharge valve to release can prevent effectively that the pressure release in-process gas from flowing back to further improve defogging and dustproof effect.

In an embodiment, the defogging device further comprises a first sealing element and a second sealing element, wherein the first sealing element is arranged at the joint of the inner surface of the front windshield and the upper surface of the light shield, and the second sealing element is arranged in a sealing groove between the front conical surface of the lens of the front-view camera and the lens assembly hole of the light shield.

Through setting up first sealing member and seal between lens hood and front windshield, set up the second sealing member and seal between the camera lens of front view camera and the lens hood, can further improve the sealing performance of the sealed space that lens hood and front windshield and front view camera enclose and close and form, avoid the light leak to a great extent, ensure the image quality of camera. Specifically, first sealing member is the sealant, and the second sealing member is the rubber circle, and the sealant coating forms sealedly between the internal surface of front windshield and the upper surface of lens hood after the solidification of extrusion seal through both location, and annular rubber circle is installed in the seal groove between the front end conical surface of the camera's of front view camera and the lens pilot hole of lens hood, and pass the front view camera support through camera support screw and fix and lock on the erection column of the lower surface of lens hood, and the rubber circle reaches sealed effect through extrusion deformation, so far, the inside FOV of lens hood forms sealed space with front windshield intersection region, does not actively produce the air convection with external environment.

The defogging method for the front view camera in the vehicle of the second aspect of the invention is implemented by adopting the defogging device for the front view camera in the vehicle, and comprises the following steps: s01, a front view sensing module detects whether a camera view angle of a front view camera, a front windshield intersection area and a lens surface shielding state of the front view camera reach a limiting threshold value or not, and judges whether the shielding state lasts for a first preset duration or not; if yes, sequentially executing the step S02 and the step S03; s02, starting a defogging module by the air conditioning system, and sending defogging wind into a sealed space formed by enclosing a light shield, a front windshield and a front-view camera through the wind guiding module; s03, after the front view sensing module detects that the intersection area of the camera view angle of the front view camera and the front windshield disappears for a second preset time period, the defogging module is closed by the air conditioning system.

Obviously, according to the defogging method for the front view camera in the vehicle according to the second aspect of the invention, due to the implementation of the defogging device for the front view camera in the vehicle, the clean and dry high-speed air flow is accurately and quickly sent to a fogger to defog through the additionally arranged air guide module, the light leakage is avoided in the closed environment of the light shield, the invasion of external dust is blocked, the quality of the perceived image of the front view camera is improved, and the energy consumption is reduced by optimizing and utilizing the existing air conditioning system.

In an embodiment, a pressure release module is arranged on the light shield, and the defogging method for the front-view camera in the vehicle further comprises the following steps: s04, in step S02 and step S03, when the pressure in a sealed space formed by enclosing the light shield, the front windshield and the front-view camera reaches the limit pressure threshold of the pressure relief module, the pressure relief module starts exhaust.

Specifically, when the FOV of the front view camera reaches a limiting threshold value with the intersection area of the front windshield and the surface of the lens of the front view camera, the state of a shielding object (block) judged by the front view sensing module is continuously 3s, an independent defogging module in the air conditioning system is started, flowing gas flows into a ventilation pipeline arranged in the A column through an air filter and then is delivered to a light shield area, mist in the front windshield and on the lens of the front view camera is accurately and rapidly eliminated through pressurized high-speed airflow, after the state of the shielding object (block) is judged to disappear for 5s by the front view sensing module (FLC), a signal is sent to the air conditioning system to close the defogging module, during the period, the air pressure in the light shield is always in a positive pressure state, when the limiting pressure threshold value of the one-way exhaust valve is reached, the air convection is not generated in the light shield through the one-way exhaust valve, and the air dust is isolated.

The vehicle of the third aspect of the invention comprises the defogging device for the front-view camera in the vehicle.

For the vehicle, due to the inclusion of the demisting device for the front view camera in the vehicle, clean and dry high-speed air flow can be accurately and rapidly delivered to a fog generating point for demisting through the additionally arranged air guide module, the closed environment in the light shield prevents light leakage and simultaneously blocks invasion of external dust, the quality of perceived images of the front view camera is improved, and the energy consumption is reduced by optimizing and utilizing the existing air conditioning system.

Compared with the prior art, the invention has the advantages that the independent defogging module is optimally arranged in the air conditioning system, defogging wind is guided into the light shield through the wind guide module to quickly defog, and the accurate defogging is realized by reasonably arranging the outlet of the wind guide module according to the positions of the lens of the front-view camera and the intersection effective area of the FOV and the front windshield in the light shield.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 schematically illustrates a prior art defogging method for a front-view camera;

FIG. 2 schematically illustrates the general layout of a defogging device for a front view camera in a vehicle according to an embodiment of the present invention;

FIG. 3 schematically illustrates a partial layout of an air guiding module in an embodiment of the invention;

FIG. 4 schematically illustrates the layout of a first seal and a second seal in an embodiment of the invention;

FIG. 5 schematically illustrates the overall assembly of the first seal and the second seal in an embodiment of the invention;

FIG. 6 schematically illustrates a split configuration of a tuyere assembly in an embodiment of the present invention;

FIG. 7 schematically illustrates an assembly configuration of a tuyere assembly in an embodiment of the present invention;

FIG. 8 schematically illustrates an enlarged structure in partial cross-section A of FIG. 7;

FIG. 9 schematically illustrates a partially cut-away enlarged structure of FIG. 8B;

FIG. 10 schematically illustrates an alternate orientation of the assembly of the air chute assembly in accordance with an embodiment of the invention;

FIG. 11 schematically illustrates an enlarged structure in partial cross-section of FIG. 10C;

FIG. 12 schematically illustrates an overall assembly of a pressure relief module in accordance with an embodiment of the present invention;

FIG. 13 schematically illustrates the overall structure of a pressure relief module in an embodiment of the invention;

FIG. 14 schematically illustrates an overall assembly configuration of an air conduction module in an embodiment of the invention;

FIG. 15 schematically illustrates a partially enlarged D-direction structure of FIG. 14;

FIG. 16 schematically illustrates a miniaturized alignment of an interior housing in an embodiment of the present invention;

fig. 17 schematically shows a front-rear comparison structure of the interior housing miniaturization in the embodiment of the present invention.

Detailed Description

Specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It will be apparent that the described embodiments are only some, but not all, embodiments of the invention. All other embodiments, which can be made by those skilled in the art without making any inventive effort, are intended to be within the scope of the present invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "disposed," "configured," "mounted," "connected," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the terms described above will be understood to those of ordinary skill in the art in a specific context.

The terms "upper", "inner surface", "upper surface", "directly below", "front end", "lower surface", "underside", etc. refer to an orientation or positional relationship based on that shown in the drawings, or that is conventionally put in place when the inventive product is used, merely for convenience of description and simplicity of description, and do not indicate or imply that the apparatus or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

The terms "first," "second," and the like, are used merely for descriptive purposes and are not intended to indicate or imply relative importance or a particular order, but rather are merely indicative of relative importance or order of execution of the methods, etc.

The term "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that elements are listed and may include other elements not expressly listed.

Example 1

As shown in fig. 2 and 14, the defogging device 100 for a front view camera in a vehicle according to an embodiment of the present invention includes an air guiding module 11 and a defogging module, wherein the defogging module is disposed in an air conditioning system 13, the air guiding module 11 is respectively connected with the defogging module and a light shielding cover 14, and the air guiding module 11 guides defogging air generated by the defogging module into the light shielding cover 14.

According to the defogging device 100 for the front view camera in the vehicle, through the additionally arranged air guide module 11, clean and dry high-speed air flow is accurately and quickly sent to a foggy point, the airtight environment in the light shield 14 is prevented from leaking light and simultaneously the invasion of external dust is blocked, the quality of the perceived image of the front view camera 15 is improved, a heating wire is not needed, the existing air conditioning system 13 is optimized and utilized, the energy consumption is reduced, the reduction of the resolving capability of the intersection line 171 area of the FOV16 of the front view camera 15 and the front windshield 17 caused by improper arrangement of the heating wire is avoided, more shutters are not needed to be designed, because the defogging air of the air conditioner is not fed in from the shutters and the bottom air inlets of the inner trim shell, the size space of the inner trim shell 18 has a larger compression space, and the internal non-appearance piece is not easy to be visible from the shutters, so that the inner trim shell 18 has a compact structure, the miniaturization and the inner trim appearance optimization are facilitated, the process is simple and easy to realize, and the defogging device is shown in fig. 16 and 17.

As shown in fig. 3, 14 and 15, specifically, in the present embodiment, the air guiding module 11 includes an air duct 111 connected to the demisting module and an air guiding nozzle assembly 112 connected to the air duct 111, wherein the air duct 111 extends toward the shade 14 through the a-pillar 19, and the air guiding nozzle assembly 112 is disposed on the shade 14. Specifically, a path of ventilation pipeline 111 is led out through the optimal design of the air conditioning system 13, is led into the air guide nozzle assembly 112, is reasonably arranged under the light shield 14 through the air guide nozzle assembly 112, is arranged in the light shield 14 corresponding to the position of the effective area of the intersection line 171 of the lens of the front-view camera 15 and the FOV16 and the front windshield 17, and is used for precise defogging, and referring to fig. 10 and 11.

Further, as shown in fig. 3, in the present embodiment, an air filtering module 113 is provided on the ventilation duct 111 near the outlet of the demisting module. The air filtering module 113 can purify the independent demisting air optimally designed in the air conditioning system 13 again, and clean and dry high-speed air is produced and accurately and quickly delivered into the light shield 14 through the ventilating duct 111 and the air guide nozzle assembly 112, so that dust and water vapor invasion in the external environment is greatly blocked. Specifically, the air filter module 113 is an air filter.

As shown in fig. 7 to 9, specifically, in the present embodiment, the air nozzle assembly 112 includes an air nozzle 114, and a glass air guide port 115 and a lens air guide port 116 are respectively provided on the air nozzle 114, wherein the glass air guide port 115 guides defogging air to the inner surface of the front windshield 17, and the lens air guide port 116 guides defogging air to the lens 151 surface of the front camera 15. Specifically, the air guide nozzle assembly 112 is disposed directly below the light shield 14, and is composed of an air guide nozzle 114, a lock nut 117 and a clamp spring 118, the air guide nozzle 114 passes through the upper portion of the light shield 14, is tightly locked on a boss on the lower side of the light shield 14 by the lock nut 117, and is sequentially sleeved with the clamp spring 118 and a port of the ventilation duct 111 at the lower end of the air guide nozzle 114, the clamp spring 118 is locked, and air flows are respectively and rapidly and accurately guided to the inner surface of the front windshield 17 and the surface of the lens 151 of the front-view camera 15 through the glass air guide opening 115 and the lens air guide opening 116 of the air guide nozzle 114, as shown in fig. 6.

As shown in fig. 12 and 13, in this embodiment, the defogging device 100 further includes a pressure relief module 20 disposed on the light shield 14, for relieving pressure in a sealed space formed by enclosing the light shield 14 with the front windshield 17 and the front camera 15. Specifically, the air flow entering the region where the FOV16 in the light shield 14 intersects the front windshield 17 through the air guide nozzle 114 is defogged and dedusted accurately and rapidly, and when the air pressure in the sealing region rises to the limit pressure threshold of the pressure release module 20, the pressure release module 20 arranged beside the front camera 15 is opened to release the pressure internally, so that the defogging air flow is well ensured to quickly and accurately eliminate fog and possible dust fall. Specifically, in the present embodiment, the pressure relief module 20 is a one-way exhaust valve. Adopt one-way discharge valve to release can prevent effectively that the pressure release in-process gas from flowing back to further improve defogging and dustproof effect.

As shown in fig. 4 and 5, further, in the present embodiment, the defogging device 100 further includes a first seal member 21 and a second seal member 22, wherein the first seal member 21 is provided at a junction of an inner surface of the front windshield 17 and an upper surface of the light shield 14, and the second seal member 22 is provided in a seal groove between a front end tapered surface of the lens 151 of the front view camera 15 and a lens fitting hole of the light shield 14. By arranging the first sealing piece 21 between the light shield 14 and the front windshield 17 for sealing, and arranging the second sealing piece 22 between the lens of the front-view camera 15 and the light shield 14 for sealing, the sealing performance of the sealing space formed by enclosing the light shield 14 with the front windshield 17 and the front-view camera 15 can be further improved, light leakage is avoided to a great extent, and the image quality of the front-view camera 15 is ensured. Specifically, the first sealing member 21 is a sealant, the second sealing member 22 is a rubber ring, the sealant is coated between the inner surface of the front windshield 17 and the upper surface of the light shield 14, the sealant is formed after being solidified through positioning extrusion, the annular rubber ring is installed in a sealing groove between the conical surface of the front end of the lens of the front-view camera 15 and the lens assembly hole of the light shield 14, the annular rubber ring is fixed and locked on a mounting column on the lower surface of the light shield 14 through a camera bracket screw 23 by penetrating through the front-view camera bracket 24, the rubber ring achieves a sealing effect through extrusion deformation, so that a sealing space is formed in an intersecting line area between the FOV16 inside the light shield 14 and the front windshield 17, and air convection is not actively generated with the external environment.

Example 2

The defogging method for the front view camera in the vehicle, provided by the embodiment of the invention, is implemented by adopting the defogging device 100 for the front view camera in the vehicle, and comprises the following steps: s01, the front view sensing module 12 detects whether a camera view angle (FOV) 16 of the front view camera 15 meets a line 171 area of the front windshield 17 and a shielding state of the lens surface of the front view camera 15 reach a limit threshold value or not, and judges whether the shielding state lasts for a first preset duration or not; if yes, sequentially executing the step S02 and the step S03; s02, starting a defogging module by the air conditioning system 13, and sending defogging wind into a sealed space formed by enclosing the light shield 14, the front windshield 17 and the front-view camera 15 through the wind guiding module 11; s03, after the front view sensing module 12 detects that the intersection 171 area of the camera view angle (FOV) 16 of the front view camera 15 and the front windshield 17 disappears for a second preset period of time, the air conditioning system 13 closes the defogging module.

Obviously, according to the defogging method for the front view camera in the vehicle according to the embodiment of the invention, by adopting the defogging device 100 for the front view camera in the vehicle, the clean and dry high-speed air flow is accurately and quickly sent to the fogger to defog through the additionally arranged air guide module 11, the airtight environment in the light shield 14 prevents light leakage, and simultaneously blocks the invasion of external dust, thereby improving the quality of the perceived image of the front view camera 15, optimizing and utilizing the existing air conditioning system 13, and reducing the energy consumption.

Further, in this embodiment, the pressure release module 20 is disposed on the light shield 14, and the defogging method for the front view camera in the vehicle according to the present invention further includes the following steps: in step S02 and step S03, when the pressure in the sealed space formed by the enclosure of the hood 14, the front windshield 17 and the front camera 15 reaches the limit pressure threshold of the pressure relief module 20, the pressure relief module 20 opens the exhaust.

Specifically, when the FOV16 of the front view camera 15 and the intersection area of the front windshield 17 and the surface of the lens 151 of the front view camera 15 are fogged or dust fall to reach a limit threshold, the shielding (blocking) state determined by the front view sensing module 12 continues for 3s, an independent defogging module in the air conditioning system 13 will be started, flowing air flows into the ventilation duct 111 installed inside the a pillar 19 through the air filter, then is delivered to the area of the hood 14, the fog in the front windshield 17 and the fog on the lens 151 of the front view camera 15 are precisely and rapidly eliminated through the pressurized high-speed airflow, after the front view sensing module (FLC) 12 determines that the shielding (blocking) state disappears for 5s, a signal is sent to the air conditioning system 13 to close the defogging module, during the period, the air pressure in the hood 14 is always in a positive pressure state, and when the limiting pressure threshold of the one-way exhaust valve is reached, the air convection is not generated inside the hood 14 and the surrounding environment through the one-way exhaust valve, so that the dust is isolated.

Example 3

The vehicle of the third aspect of the invention comprises the defogging device for the front-view camera in the vehicle.

For the vehicle of the embodiment of the invention, the demisting device 100 for the front view camera in the vehicle is included, so that clean and dry high-speed air flow can be accurately and quickly delivered to a fogging point for demisting through the additionally arranged air guide module 11, the sealed environment in the light shield 14 is prevented from leaking light, the invasion of external dust is blocked, the quality of the perceived image of the front view camera 15 is improved, and the energy consumption is reduced by optimizing and utilizing the existing air conditioning system 13.

According to the embodiment, the defogging device and method for the front-view camera in the vehicle and the vehicle are provided, the independent defogging module is optimally arranged in the air conditioning system, defogging wind is guided into the light shield through the wind guide module to quickly defog, and the outlet of the wind guide module is reasonably arranged in the light shield according to the lens of the front-view camera and the position of the intersection effective area of the FOV and the front windshield to realize accurate defogging.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

The foregoing is merely illustrative of the present invention, and the present invention is not limited thereto, and any changes or substitutions easily contemplated by those skilled in the art within the scope of the present invention should be included in the present invention. Accordingly, the scope of the invention should be assessed as that of the appended claims.

Claims (10)

1. The defogging device for the front-view camera in the vehicle is characterized by comprising an air guide module and a defogging module; wherein,

the defogging module sets up in air conditioning system, the wind-guiding module respectively with defogging module and lens hood are connected, the wind-guiding module will defogging wind that defogging module produced is leading-in the lens hood.

2. The defogging device for an in-vehicle front view camera of claim 1, wherein the air guiding module comprises a ventilation duct connected to the defogging module and an air guiding nozzle assembly connected to the ventilation duct; wherein,

the ventilating duct penetrates through the A column to extend towards the light shield, and the air guide nozzle assembly is arranged on the light shield.

3. The defogging device for an in-vehicle front view camera of claim 2, wherein an air filtering module is provided on the ventilation pipe near an outlet of the defogging module.

4. A defogging device for a front view camera in a vehicle as claimed in claim 2 or 3, wherein the air guide nozzle assembly comprises an air guide nozzle, and a glass air guide opening and a lens air guide opening are respectively arranged on the air guide nozzle; wherein,

the glass air guide opening guides defogging air to the inner surface of the front windshield, and the lens air guide opening guides defogging air to the lens surface of the front-view camera.

5. A defogging device for a front view camera in a vehicle as claimed in any one of claims 1 to 3, further comprising a pressure relief module provided on the light shield for relieving pressure in a sealed space formed by the light shield surrounding the front windshield and the front view camera.

6. The defogging device for an in-car front view camera of claim 5, wherein the pressure relief module is a one-way vent valve.

7. A defogging device for an in-vehicle front view camera according to any of claims 1 to 3, wherein said defogging device further comprises a first sealing member and a second sealing member; wherein,

the first sealing piece is arranged at the joint of the inner surface of the front windshield and the upper surface of the light shield;

the second sealing piece is arranged in a sealing groove between the front end conical surface of the lens of the front-view camera and the lens assembly hole of the light shield.

8. A defogging method for an in-vehicle front view camera, implemented by using the defogging device for an in-vehicle front view camera according to any one of the above claims 1 to 7, characterized by comprising the steps of:

s01, a front view sensing module detects whether a camera view angle of a front view camera, a front windshield intersection area and a lens surface shielding state of the front view camera reach a limiting threshold value or not, and judges whether the shielding state lasts for a first preset duration or not; if yes, sequentially executing the step S02 and the step S03;

s02, starting the defogging module by the air conditioning system, and sending defogging wind into a sealed space formed by enclosing a light shield, a front windshield and a front-view camera through the wind guiding module;

s03, after the front view sensing module detects that the intersection area of the camera view angle of the front view camera and the front windshield disappears for a second preset time period, the defogging module is closed by the air conditioning system.

9. The defogging method for the front view camera of claim 8, wherein the light shield is provided with a pressure relief module, and the method further comprises the following steps:

s04, in the step S02 and the step S03, when the pressure in a sealed space formed by enclosing the light shield, the front windshield and the front-view camera reaches the limit pressure threshold of the pressure relief module, the pressure relief module starts exhaust.

10. A vehicle comprising a defogging device for an in-vehicle front view camera according to any of the claims 1 to 7.