Autonomous demisting vehicle-mounted camera

Abstract

The invention discloses an autonomous demisting vehicle-mounted camera, and belongs to the technical field of vehicles, the autonomous demisting vehicle-mounted camera comprises a camera body, a transparent plate, an air pump and a buffer chamber, a first air inlet pipeline and a first air outlet pipeline are symmetrically arranged on a lens module of the camera body, and the first air inlet pipeline and the first air outlet pipeline are both communicated with a lens groove in the lens module; the transparent plate is hermetically mounted at the opening position of the lens groove; and a heating wire is mounted in an air cavity in the buffer chamber. According to the heating device, the air pump, the buffer chamber and the heating wire are arranged, the air inlet and the air outlet of the air pump communicate with the first air inlet pipeline and the first air outlet pipeline correspondingly, a warm air flow circulation is formed, and in the whole circulation process, the whole warm air flow cannot be exchanged with the external environment; therefore, the problem that moisture in the external environment is introduced into the lens groove does not exist, in other words, warm air flow can be kept dry and clean for a long time, and the situation that water drops are condensed on the transparent plate is effectively avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of vehicles, and in particular relates to an autonomous defogging vehicle-mounted camera. Background Art

[0002] In order to improve driving safety, most cars nowadays are equipped with on-board cameras. There are many types of on-board cameras, such as cameras with front-mounted driving recorders, cameras on the side of the car body for 360-degree imaging, and reversing image cameras placed at the rear of the car.

[0003] At present, vehicle-mounted cameras are basically installed in a direct exposed manner. Specifically, the lenses of existing vehicle-mounted cameras are directly exposed to the external environment. During actual use, the lenses of such vehicle-mounted cameras are prone to fogging, resulting in reduced clarity of the images taken by the camera.

[0004] The Chinese invention patent with the patent number CN111762106B discloses a vehicle camera defrosting device and defrosting method, wherein the vehicle camera defrosting device is arranged on a vehicle with a camera and an air conditioner capable of heating, and comprises a protective cover body, an air inlet channel and an air outlet channel; the protective cover body is fixedly arranged on the body of the vehicle, and a receiving cavity for the camera to be inserted is formed between the protective cover body and the body, and at least the portion of the protective cover body facing the camera end is transparent; the air inlet channel is constructed in the vehicle, and forms a connection between the air outlet duct of the air conditioner on the vehicle and the receiving cavity; the air outlet duct is also constructed on the vehicle, and forms a connection between the receiving cavity and the outside of the vehicle, so that the warm air entering the receiving cavity can flow out. The vehicle-mounted camera defrosting device described in the present invention can use the warm air in the air outlet duct of the air conditioner to remove the fog, frost or raindrops on the protective cover body when fog, frost or raindrops appear on the protective cover body, thereby effectively ensuring the clarity of the image captured by the camera.

[0005] The technical solution of the above patent still has certain problems in actual use: since the technical solution of the patent is to directly introduce the warm air in the air-conditioning outlet duct into the interior of the "protective cover body 2", so as to achieve the purpose of defogger, defrost or raindrop removal, but the warm air in the air-conditioning outlet duct is not necessarily dry air. When there is moisture in the warm air in the air-conditioning outlet duct, it will cause the moisture inside the "protective cover body 2" to increase. Then, after stopping the supply of warm air to the inside of the "protective cover body 2", the moisture in the air inside the "protective cover body 2" may condense into small water droplets on the inner surface of the "protective cover body 2", which will also cause the camera to take unclear pictures. Summary of the invention

[0006] The purpose of the present invention is to provide an autonomous defogging vehicle-mounted camera in order to solve the problem raised in the background technology.

[0007] In order to achieve the above object, the present invention adopts the following technical solutions: An autonomous defogging vehicle camera, comprising: A camera body, wherein a first air inlet duct and a first air outlet duct are symmetrically arranged on a lens module of the camera body, and the first air inlet duct and the first air outlet duct are both connected to a lens slot on the lens module; A transparent plate, wherein the transparent plate is sealingly mounted at the opening of the lens slot; Air pump; and A buffer chamber, wherein a heating wire is installed in the air cavity inside the buffer chamber; The airflow generated by the air pump enters the interior of the lens slot through the first air inlet pipe after being heated by the heating wire, and returns to the interior of the air pump through the first air outlet pipe after heating the transparent plate.

[0008] By setting up an air pump, a buffer chamber and a heating wire, and connecting the air inlet and outlet of the air pump with the first air inlet pipe and the first air outlet pipe respectively, after starting the air pump, the air pump transports the gas heated by the heating wire in the buffer chamber to the inside of the lens slot through the first air inlet pipe, and returns to the inside of the air pump through the first air outlet pipe after heating the transparent plate, thus forming a circulation of warm air flow, and during the entire circulation process, the entire warm air flow will not be exchanged with the external environment, so there is no problem of introducing moisture from the external environment into the lens slot. In other words, the warm air flow can remain dry and clean for a long time, and the condensation of water droplets on the transparent plate is effectively avoided.

[0009] Preferably, a pneumatic telescopic assembly is provided on the camera body, and the pneumatic telescopic assembly uses the air pressure generated by the air pump to expand and contract in the vertical direction, and drives the dust removal mechanism to move up and down to remove debris on the side of the transparent plate away from the lens module.

[0010] Preferably, the pneumatic telescopic assembly includes a fixed column and a movable shaft telescopically arranged at the top of the fixed column, wherein a sliding cavity is opened in the interior of the fixed column along its axial direction, and a sealing top seat and a sealing base are respectively installed in a sealing manner on the inner top and inner bottom of the sliding cavity, and the bottom end of the movable shaft is slidably and tightly connected to the fixed column through the sealing top seat, and the internal sliding sealing connection of the sliding cavity is connected to a piston fixedly connected to the bottom end of the movable shaft, and the piston divides the sliding cavity into two parts, a first chamber and a second chamber, a second air inlet pipe and a second air outlet pipe are fixed to the side of the fixed column, the second air inlet pipe and the second air outlet pipe are respectively connected to the second chamber and the first chamber, one end of the second air inlet pipe extends to the interior of the second chamber, and one end face of the second air outlet pipe is flush with the inner wall surface of the sliding cavity, the vertical thickness of the piston is greater than the inner diameter of the second air outlet pipe, and the distance between the piston and the sealing base is greater than the vertical thickness of the piston.

[0011] By setting up a fixed column and a movable shaft with a telescopic connection, and connecting the first chamber and the second chamber separated by the piston with the air outlet and the air inlet of the air pump respectively, after starting the air pump, the pneumatic telescopic assembly will first push the dust removal mechanism downward to clear the debris on the side of the transparent plate away from the lens module. That is, the movement of the dust removal mechanism does not require the use of a new power source, and the actual use effect is good.

[0012] Preferably, the second air inlet pipe is connected to the air cavity through the first pipe, the second air outlet pipe is connected to the first air inlet pipe through the second pipe, and the first air outlet pipe is connected to the air inlet of the air pump through the third pipe.

[0013] Preferably, arc-shaped grooves are provided on the upper and lower side surfaces of the inner wall of the lens groove, the first air inlet duct and the first air outlet duct are respectively connected to the two arc-shaped grooves, an arc-shaped sealing plate is fixed at the opening position of the arc-shaped groove, the arc-shaped sealing plate is concentric with the arc-shaped groove, and a plurality of uniform air holes are provided on the arc-shaped sealing plate, and the uniform air holes are used to connect the lens groove and the arc-shaped groove.

[0014] Preferably, an inspection port is provided on one side of the buffer chamber, a cover plate is installed at the inspection port via a second fastener, the cover plate is sealed to the inspection port via a sealing gasket, a drying box is installed on one side surface of the cover plate, the drying box is located inside the air cavity, and absorbs moisture in the gas passing through the air cavity; two second fasteners are provided, and are symmetrically arranged on both sides of the cover plate, the second fasteners include a third fixing block, a fourth fixing block and a second bolt, wherein the third fixing block is fixed to the cover plate, the fourth fixing block is fixed to the buffer chamber, and the third fixing block is fixedly connected to the fourth fixing block via the second bolt.

[0015] The inspection port is provided to facilitate users to inspect the heating wire inside the buffer chamber. The cover plate and the sealing gasket are used to seal the inspection port to prevent the gas in the external environment from entering the buffer chamber. At the same time, the drying box can dehumidify the gas inside the buffer chamber to keep the gas inside the buffer chamber dry.

[0016] Preferably, the transparent plate is fixedly connected to the lens module via a first fastener, wherein the first fastener comprises a first fixing block, a second fixing block and a first bolt, the first fixing block is fixedly connected to the lens module, the second fixing block is fixedly connected to the transparent plate, and the first fixing block is fixedly connected to the second fixing block via a first bolt; at least two groups of the first fasteners are provided and are symmetrically arranged on both sides of the lens module, a first sealing ring is provided between the lens module and the transparent plate, and the center of the first sealing ring is located on the axis of the lens module.

[0017] Preferably, the sealing top seat includes a sealing ring, an annular cover and a second sealing ring, the sealing ring is threadedly connected to the inner top of the sliding cavity, the annular cover and the second sealing ring are both sleeved on the top of the sealing ring, the annular cover is fixedly connected to the sealing ring, and the annular cover presses the second sealing ring against the top of the fixed column.

[0018] Preferably, a cavity is formed on one end surface of the sliding cavity, and an air hole is formed on one end surface of the sealing base away from the cavity, the air hole is connected to the cavity, and the aperture of the air hole is smaller than the inner diameter of the cavity, and a horizontally arranged silicone diaphragm is installed for internal sealing of the cavity, and the silicone diaphragm divides the cavity into a first cavity connected to the sliding cavity and a second cavity connected to the air hole.

[0019] Preferably, the dust removal mechanism includes a horizontally arranged pressure plate and a rubber strip fixed on the pressure plate, one side of the rubber strip is pressed against a side surface of the transparent plate away from the lens module, one side surface of the rubber strip is provided with a plurality of horizontally arranged strip grooves, a vertical rod is fixed to one end of the pressure plate, and the top end of the vertical rod is fixedly connected to the top end of the movable shaft through a cross rod.

[0020] By setting up a dust removal mechanism and using a pneumatic telescopic component to drive the dust removal mechanism up and down, debris adhered to the side of the transparent plate away from the lens module can be effectively removed to prevent water droplets, dust, etc. from affecting the clarity of the image captured by the lens module.

[0021] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the present invention, an air pump, a buffer chamber and a heating wire are provided, and the air inlet and outlet of the air pump are connected to the first air inlet pipe and the first air outlet pipe respectively. After starting the air pump, the air pump transports the gas heated by the heating wire in the buffer chamber to the inside of the lens slot through the first air inlet pipe, and returns to the inside of the air pump through the first air outlet pipe after heating the transparent plate, thus forming a circulation of warm air flow. During the entire circulation process, the entire warm air flow will not be exchanged with the external environment, so there is no problem of introducing moisture in the external environment into the interior of the lens slot. In other words, the warm air flow can remain dry and clean for a long time, and the condensation of water droplets on the transparent plate is effectively avoided.

[0022] 2. In the present invention, by setting up a dust removal mechanism and using a pneumatic telescopic assembly to drive the dust removal mechanism to move up and down, the debris adhered to the side of the transparent plate away from the lens module can be effectively removed to prevent water droplets, dust, etc. from affecting the clarity of the picture taken by the lens module.

[0023] 3. In the present invention, by setting a fixed column and a movable shaft with a telescopic connection, and connecting the first chamber and the second chamber separated by the piston with the air outlet and the air inlet of the air pump respectively, after starting the air pump, the pneumatic telescopic assembly will first push the dust removal mechanism to move downward to remove the debris on the side of the transparent plate away from the lens module. That is, the movement of the dust removal mechanism does not require the use of a new power source, and the actual use effect is good.

[0024] 4. In the present invention, the inspection port is provided to facilitate users to inspect the heating wire inside the buffer chamber. The cover plate is used with a sealing gasket to seal the inspection port to prevent the gas in the external environment from entering the buffer chamber. At the same time, the drying box can dehumidify the gas inside the buffer chamber to keep the gas inside the buffer chamber dry. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall structure of an autonomous defogging vehicle-mounted camera proposed by the present invention; Figure 2 A schematic diagram of the partial structure of an autonomous defogging vehicle-mounted camera proposed by the present invention; Figure 3 This is a schematic diagram of the structure of a pneumatic telescopic assembly for an on-board camera with autonomous defogging proposed by the present invention; Figure 4 This is a schematic diagram of the structure of a self-defoggable vehicle camera transparent plate proposed by the present invention; Figure 5 This is a schematic cross-sectional structural diagram of an autonomous defogging vehicle camera lens module proposed by the present invention; Figure 6 A schematic diagram of the partial structure of a dust removal mechanism for an on-board camera with autonomous defogging proposed by the present invention; Figure 7 This is a structural schematic diagram of an autonomous defogging vehicle camera lens module proposed by the present invention; Figure 8 This is a schematic cross-sectional structural diagram of a vehicle-mounted camera fixing column with autonomous defogging proposed by the present invention; Fig. 9 This is a schematic cross-sectional structural diagram of a sealed base of an on-board camera with autonomous defogging proposed by the present invention; Fig.10 This is a schematic cross-sectional structural diagram of an autonomous defogging vehicle camera buffer chamber proposed by the present invention; Fig.11 This is a schematic structural diagram of a second fastener of an autonomous defogger vehicle-mounted camera proposed by the present invention.

[0026] Legend: 100, camera body; 110, lens module; 111, lens slot; 112, arc slot; 113, arc sealing plate; 114, uniform air holes; 120, first air inlet pipe; 130, first air outlet pipe; 140, first sealing ring; 150, first fastener; 151, first fixing block; 152, second fixing block; 153, first bolt; 200, air pump; 210, first pipe; 220, second pipe; 230, third pipe; 300, buffer chamber; 310, air cavity; 320, heating wire; 330, inspection port; 340, cover plate; 341, sealing pad; 350, drying box; 360, second fastener; 361, third fixing block; 362, fourth Fixed block; 363, second bolt; 400, transparent plate; 500, pneumatic telescopic assembly; 510, fixed column; 511, sliding cavity; 5111, first chamber; 5112, second chamber; 512, sealing top seat; 5121, sealing ring; 5122, annular cover; 5123, second sealing ring; 513, sealing base; 5131, cavity; 5132, silicone diaphragm; 5133, first cavity; 5134, second cavity; 5135, air vent; 520, movable shaft; 530, dust removal mechanism; 531, pressure plate; 532, rubber strip; 5321, strip groove; 533, vertical rod; 534, horizontal rod; 540, piston; 550, second air inlet duct; 560, second air outlet duct. DETAILED DESCRIPTION

[0027] The present invention is described below in conjunction with specific embodiments.

[0028] like Figures 1 to 11As shown, the vehicle-mounted camera with autonomous defogger in this embodiment includes a camera body 100, an air pump 200, a buffer chamber 300 and a transparent plate 400. The air pump 200 and the buffer chamber 300 can be installed on the camera body 100. The first air inlet pipe 120 and the first air outlet pipe 130 are symmetrically arranged on the lens module 110 of the camera body 100. The first air inlet pipe 120 and the first air outlet pipe 130 are both connected to the lens slot 111 on the lens module 110; the transparent plate 400 is sealed and installed at the opening position of the lens slot 111; a heating wire 320 is installed in the air cavity 310 inside the buffer chamber 300, and the heating of the gas by the heating wire 320 is a technology well known to those skilled in the art, and no further description is made here. The main purpose of the heating of the gas by the heating wire 320 is to make the temperature inside the lens slot 111 reach a certain height, for example, 25-32°C, so that the transparent plate 400 can be kept at a higher temperature, thereby preventing the transparent plate 400 from fogging; the airflow generated by the air pump 200 After being heated by the heating wire 320, the gas enters the interior of the lens groove 111 through the first air inlet pipe 120, and returns to the interior of the air pump 200 through the first air outlet pipe 130 after heating the transparent plate 400; by setting the air pump 200, the buffer chamber 300 and the heating wire 320, and connecting the air inlet and outlet of the air pump 200 with the first air inlet pipe 120 and the first air outlet pipe 130 respectively, after starting the air pump 200, the air pump 200 transports the gas heated by the heating wire 320 in the buffer chamber 300 to the interior of the lens groove 111 through the first air inlet pipe 120, and returns to the interior of the air pump 200 through the first air outlet pipe 130 after heating the transparent plate 400, thus forming a circulation of warm air flow, and during the entire circulation process, the entire warm air flow will not be exchanged with the external environment, so there is no problem of introducing moisture in the external environment into the interior of the lens groove 111, in other words, the warm air flow can be kept dry and clean for a long time, and the condensation of water droplets on the transparent plate 400 is effectively avoided.

[0029] like Figure 5 and Figure 7 As shown, arc grooves 112 are provided on the upper and lower side surfaces of the inner wall of the lens groove 111, and the first air inlet duct 120 and the first air outlet duct 130 are respectively connected to the two arc grooves 112, and an arc sealing plate 113 is fixed at the opening position of the arc groove 112, and the arc sealing plate 113 is concentric with the arc groove 112, and a plurality of uniform air holes 114 are provided on the arc sealing plate 113, and the uniform air holes 114 are used to connect the lens groove 111 and the arc groove 112; the arc groove 112 is equipped with an arc sealing plate 113 with a large number of uniform air holes 114, so that the warm air flow inside the first air inlet duct 120 can enter the interior of the lens groove 111 more evenly and stably.

[0030] like Figure 1As shown, the camera body 100 is provided with a pneumatic telescopic assembly 500, which uses the air pressure generated by the air pump 200 to expand and contract in the vertical direction, and drives the dust removal mechanism 530 to move up and down to remove the debris on the side of the transparent plate 400 away from the lens module 110; Figure 2 , Figure 4 , Figure 5 ,and Figure 6 As shown, the dust removal mechanism 530 includes a horizontally arranged pressure plate 531 and a rubber strip 532 fixed on the pressure plate 531. One side of the rubber strip 532 is pressed tightly against a side surface of the transparent plate 400 away from the lens module 110. A plurality of horizontally arranged strip grooves 5321 are provided on one side surface of the rubber strip 532. A vertical rod 533 is fixed to one end of the pressure plate 531. The top end of the vertical rod 533 is fixedly connected to the top end of the movable shaft 520 through a cross rod 534. The second air inlet duct 550 is connected to the air cavity through the first duct 210. The first air outlet pipe 130 is connected to the air inlet of the air pump 200 through the third pipe 230; by setting up a dust removal mechanism 530 and using the pneumatic telescopic assembly 500 to drive the dust removal mechanism 530 to move up and down, the sundries adhered to the side of the transparent plate 400 away from the lens module 110 can be effectively removed to prevent water droplets, dust, etc. from affecting the clarity of the picture taken by the lens module 110.

[0031] like Figure 1 , Figure 2 , Figure 3 and Figure 8As shown, the pneumatic telescopic assembly 500 includes a fixed column 510 and a movable shaft 520 telescopically arranged at the top of the fixed column 510. A sliding cavity 511 is opened inside the fixed column 510 along its axial direction. A sealing top seat 512 and a sealing base 513 are respectively installed on the inner top and inner bottom of the sliding cavity 511. The bottom end of the movable shaft 520 is slidingly and sealedly connected to the fixed column 510 through the sealing top seat 512. The sliding cavity 511 is internally slidingly and sealedly connected to a piston 540 fixed to the bottom end of the movable shaft 520, and the piston 540 divides the sliding cavity 511 into two parts, a first chamber 5111 and a second chamber 5112. A second air inlet pipe 550 and a second air outlet pipe 560 are fixed to the side of the fixed column 510. The second air inlet pipe 550 and the second air outlet pipe 560 are respectively connected to the second chamber 5112 and the first chamber 5111 The second air inlet pipe 550 is connected to the second chamber 5112, one end of the second air outlet pipe 560 is flush with the inner wall of the sliding cavity 511, the vertical thickness of the piston 540 is greater than the inner diameter of the second air outlet pipe 560, and the distance between the piston 540 and the sealing base 513 is greater than the vertical thickness of the piston 540; in the above scheme, by setting a telescopically connected fixed column 510 and a movable shaft 520, and connecting the first chamber 5111 and the second chamber 5112 separated by the piston 540 to the air outlet and the air inlet of the air pump 200 respectively, after starting the air pump 200, the pneumatic telescopic assembly 500 will first push the dust removal mechanism 530 downward to remove the debris on the side of the transparent plate 400 away from the lens module 110, that is, the activity of the dust removal mechanism 530 does not require the use of a new power source, and the actual use effect is good.

[0032] like Fig.10As shown, a maintenance port 330 is provided on one side of the buffer chamber 300, and a cover plate 340 is installed at the maintenance port 330 through a second fastener 360. The cover plate 340 is sealed and connected to the maintenance port 330 through a sealing gasket 341. A drying box 350 is installed on one side of the cover plate 340. The drying box 350 is located inside the air cavity 310 and absorbs moisture in the gas passing through the air cavity 310. Two second fasteners 360 are provided and symmetrically arranged on both sides of the cover plate 340. The second fasteners 360 include a third fixing block 361, a fourth fixing block 362 and a second bolt 363, wherein, The third fixing block 361 is fixed on the cover plate 340, and the fourth fixing block 362 is fixed on the buffer chamber 300. The third fixing block 361 is fixedly connected to the fourth fixing block 362 by a second bolt 363. The inspection port 330 is provided to facilitate the user to inspect the heating wire 320 inside the buffer chamber 300. The cover plate 340 is matched with a sealing gasket 341 to seal the inspection port 330 to prevent the gas in the external environment from entering the interior of the buffer chamber 300. At the same time, the drying box 350 can dehumidify the gas inside the buffer chamber 300 to keep the gas inside the buffer chamber 300 dry.

[0033] like Figure 4 As shown, the transparent plate 400 is fixedly connected to the lens module 110 via a first fastener 150, wherein the first fastener 150 includes a first fixing block 151, a second fixing block 152 and a first bolt 153, the first fixing block 151 is fixedly connected to the lens module 110, the second fixing block 152 is fixedly connected to the transparent plate 400, and the first fixing block 151 is fixedly connected to the second fixing block 152 via a first bolt 153; at least two groups of the first fastener 150 are provided, and are symmetrically arranged on both sides of the lens module 110, and a first sealing ring 140 is provided between the lens module 110 and the transparent plate 400, and the center of the first sealing ring 140 is located on the axis of the lens module 110.

[0034] like Figure 8 As shown, the sealing top seat 512 includes a sealing ring 5121, an annular cover 5122 and a second sealing ring 5123. The sealing ring 5121 is threadedly connected to the inner top of the sliding cavity 511. The annular cover 5122 and the second sealing ring 5123 are both sleeved on the top of the sealing ring 5121. The annular cover 5122 is fixedly connected to the sealing ring 5121, and the annular cover 5122 presses the second sealing ring 5123 against the top of the fixed column 510.

[0035] like Figure 8 and Fig. 9As shown, a cavity 5131 is provided on one end surface of the sealing base 513 located at the sliding cavity 511, and an air vent 5135 is provided on one end surface of the sealing base 513 away from the cavity 5131, the air vent 5135 is communicated with the cavity 5131, and the aperture of the air vent 5135 is smaller than the inner diameter of the cavity 5131, and a horizontally arranged silicone diaphragm 5132 is installed in the interior of the cavity 5131 for sealing, and the silicone diaphragm 5132 divides the cavity 5131 into a first cavity 5133 communicated with the sliding cavity 511 and a second cavity 5134 communicated with the air vent 5135; in actual use, the silicone diaphragm 5132 has strong elasticity, which is equivalent to a balloon, which is specifically manifested in that when the piston 540 descends to a height lower than the height of the second air outlet pipe 560, the second cavity 5112 at this time is in contact with the second cavity 5134. The second air outlet pipe 560 is connected, and at this time, due to the descent of the piston 540, the gas between it and the silicone diaphragm 5132 will be squeezed, and the silicone diaphragm 5132 will undergo elastic deformation, that is, bulge downward, and when the air pump 200 stops working, the air pressure between the piston 540 and the silicone diaphragm 5132 will help push the piston 540 to rise above the second air outlet pipe 560. At this time, the first chamber 5111 is connected to the second air outlet pipe 560, so that when the air pump 200 is started in reverse at this time, the gas inside the second chamber 5112 will be gradually drawn back, that is, the volume inside the second chamber 5112 will be reduced, so that the piston 540 will move up, thereby restoring the movable shaft 520 to its initial position, that is, the position where the fixed column 510 is fully extended, to facilitate the next operation.

[0036] The method of using this embodiment is as follows: after starting the air pump 200, on the one hand, the air pump 200 transports the gas heated by the heating wire 320 in the buffer chamber 300 to the inside of the lens slot 111 through the first air inlet pipe 120, and returns to the inside of the air pump 200 through the first air outlet pipe 130 after heating the transparent plate 400, thus forming a circulation of warm air flow. During the entire circulation process, the entire warm air flow will not be exchanged with the external environment, so there is no problem of introducing moisture in the external environment into the lens slot 111. In other words, the warm air flow can remain dry and clean for a long time, and the condensation of water droplets on the transparent plate 400 is effectively avoided; on the other hand, the pneumatic telescopic assembly 500 will first push the dust removal mechanism 530 downward to remove the debris on the side of the transparent plate 400 away from the lens module 110, that is, the activity of the dust removal mechanism 530 can be operated without using a new power source.

Claims

1. An autonomous defogging vehicle camera, characterized in that: include: A camera body (100), wherein a first air inlet duct (120) and a first air outlet duct (130) are symmetrically arranged on a lens module (110) of the camera body (100), and the first air inlet duct (120) and the first air outlet duct (130) are both in communication with a lens slot (111) on the lens module (110); A transparent plate (400), the transparent plate (400) being sealingly mounted at an opening of the lens slot (111); an air pump (200); and A buffer chamber (300), wherein a heating wire (320) is installed in an air cavity (310) inside the buffer chamber (300); The airflow generated by the air pump (200) enters the interior of the lens slot (111) through the first air inlet pipe (120) after being heated by the heating wire (320), heats the transparent plate (400), and then returns to the interior of the air pump (200) through the first air outlet pipe (130).

2. The vehicle-mounted camera with autonomous defogging according to claim 1, characterized in that: The camera body (100) is provided with a pneumatic telescopic assembly (500), which utilizes the air pressure generated by the air pump (200) to telescope in the vertical direction, and drives the dust removal mechanism (530) to move up and down, thereby removing debris on a side of the transparent plate (400) away from the lens module (110).

3. The vehicle-mounted camera with autonomous defogging according to claim 2, characterized in that: The pneumatic telescopic assembly (500) comprises a fixed column (510) and a movable shaft (520) telescopically arranged at the top of the fixed column (510); a sliding cavity (511) is provided inside the fixed column (510) along its axial direction; a sealing top seat (512) and a sealing base (513) are respectively installed at the inner top and inner bottom of the sliding cavity (511); the bottom end of the movable shaft (520) is connected to the fixed column (510) in a sliding and sealing manner via the sealing top seat (512); a piston (540) fixed to the bottom end of the movable shaft (520) is connected inside the sliding cavity (511) in a sliding and sealing manner; and the piston (540) divides the sliding cavity (511) into a first chamber (5111) and a second chamber (5112). The second air inlet pipe (550) and the second air outlet pipe (560) are fixed on the side of the fixed column (510), and the second air inlet pipe (550) and the second air outlet pipe (560) are respectively connected to the second chamber (5112) and the first chamber (5111), one end of the second air inlet pipe (550) extends into the interior of the second chamber (5112), and one end surface of the second air outlet pipe (560) is flush with the inner wall surface of the sliding cavity (511), the vertical thickness of the piston (540) is greater than the inner diameter of the second air outlet pipe (560), and the distance between the piston (540) and the sealing base (513) is greater than the vertical thickness of the piston (540).

4. The vehicle-mounted camera with autonomous defogging according to claim 3, characterized in that: The second air inlet pipe (550) is connected to the air cavity (310) via the first pipe (210), the second air outlet pipe (560) is connected to the first air inlet pipe (120) via the second pipe (220), and the first air outlet pipe (130) is connected to the air inlet of the air pump (200) via the third pipe (230).

5. The vehicle-mounted camera with autonomous defogging according to claim 1, characterized in that: The upper and lower side surfaces of the inner wall of the lens groove (111) are provided with arc-shaped grooves (112); the first air inlet pipe (120) and the first air outlet pipe (130) are respectively connected to the two arc-shaped grooves (112); an arc-shaped sealing plate (113) is fixed at the opening of the arc-shaped groove (112); the arc-shaped sealing plate (113) is concentric with the arc-shaped groove (112), and a plurality of uniform air holes (114) are provided on the arc-shaped sealing plate (113); the uniform air holes (114) are used to connect the lens groove (111) and the arc-shaped groove (112).

6. The vehicle-mounted camera with autonomous defogging according to claim 1, characterized in that: A maintenance opening (330) is provided on one side of the buffer chamber (300), a cover plate (340) is installed at the maintenance opening (330) via a second fastener (360), the cover plate (340) is sealed and connected to the maintenance opening (330) via a sealing gasket (341), a drying box (350) is installed on one side of the cover plate (340), the drying box (350) is located inside the air cavity (310), and absorbs moisture in the gas passing through the air cavity (310); the second fastener (360) is installed at the maintenance opening (330), and the cover plate (340) is sealed and connected to the maintenance opening (330) via a sealing gasket (341). Two fasteners (360) are provided and are symmetrically arranged on both sides of the cover plate (340); the second fastener (360) comprises a third fixing block (361), a fourth fixing block (362) and a second bolt (363); wherein the third fixing block (361) is fixed on the cover plate (340), the fourth fixing block (362) is fixed on the buffer chamber (300), and the third fixing block (361) is fixedly connected to the fourth fixing block (362) via the second bolt (363).

7. The vehicle-mounted camera with autonomous defogging according to claim 1, characterized in that: The transparent plate (400) is fixedly connected to the lens module (110) via a first fastener (150), wherein the first fastener (150) comprises a first fixing block (151), a second fixing block (152) and a first bolt (153); the first fixing block (151) is fixedly connected to the lens module (110); the second fixing block (152) is fixedly connected to the transparent plate (400); the first fixing block (151) is fixedly connected to the second fixing block (152) via a first bolt (153); at least two groups of the first fastener (150) are provided and are symmetrically arranged on both sides of the lens module (110); a first sealing ring (140) is provided between the lens module (110) and the transparent plate (400); the center of the circle of the first sealing ring (140) is located on the axis of the lens module (110).

8. The vehicle-mounted camera with autonomous defogging according to claim 3, characterized in that: The sealing top seat (512) comprises a sealing ring (5121), an annular cover (5122) and a second sealing ring (5123); the sealing ring (5121) is threadedly connected to the inner top of the sliding cavity (511); the annular cover (5122) and the second sealing ring (5123) are both sleeved on the top of the sealing ring (5121); the annular cover (5122) is fixedly connected to the sealing ring (5121), and the annular cover (5122) presses the second sealing ring (5123) against the top of the fixed column (510).

9. The vehicle-mounted camera with autonomous defogging according to claim 3, characterized in that: The sealing base (513) is provided with a cavity (5131) on one end surface of the sliding cavity (511), and a vent hole (5135) is provided on one end surface of the sealing base (513) away from the cavity (5131), the vent hole (5135) is connected to the cavity (5131), and the aperture of the vent hole (5135) is smaller than the inner diameter of the cavity (5131), and a horizontally arranged silicone diaphragm (5132) is installed in the interior of the cavity (5131) for sealing, and the silicone diaphragm (5132) divides the cavity (5131) into a first cavity (5133) connected to the sliding cavity (511) and a second cavity (5134) connected to the vent hole (5135).

10. The vehicle-mounted camera with autonomous defogging according to claim 3, characterized in that: The dust removal mechanism (530) comprises a horizontally arranged pressing plate (531) and a rubber strip (532) fixed on the pressing plate (531); one side of the rubber strip (532) is pressed against a side of the transparent plate (400) away from the lens module (110); a plurality of horizontally arranged strip grooves (5321) are provided on one side of the rubber strip (532); a vertical rod (533) is fixed to one end of the pressing plate (531); the top end of the vertical rod (533) is fixedly connected to the top end of the movable shaft (520) via a horizontal rod (534).

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