Air duct device of all-sky imager

Abstract

The utility model relates to an air duct device of an all-sky imager. The air duct device comprises an imager shell and a camera carrier shell. The imager shell and the camera carrier shell are both of a hollow cylindrical structure, and a cavity between the imager shell and the camera carrier shell forms a longitudinal air channel. A partition plate is arranged in the camera carrier shell and divides an inner cavity of the camera carrier shell into an upper cavity and a lower cavity; the upper cavity is used for installing a camera module, and an air inlet guide pipe is arranged in the lower cavity and communicated with the longitudinal air channel. An annular water baffle is mounted at the top opening of the camera carrier shell; an annular cover plate is mounted at a top opening of the imager shell; a transverse air channel is formed in the area between the annular cover plate and the annular water baffle. The camera module of the all-sky imager not only can effectively prevent dust, rain, snow and other sundries from entering the camera module of the all-sky imager, but also can melt accumulated snow at the camera lens part, has a drainage function, and prevents water from accumulating at the periphery of the camera module to influence the normal use of the camera module.

Description

Technical Field

[0001] The utility model relates to the technical field of all-sky observation in the meteorological field, and in particular to an air duct device of an all-sky imager. Background Art

[0002] All-sky imagers are instruments used to observe and record cloud cover in the sky and are commonly used in fields such as meteorological observation, astronomical research, and environmental monitoring.

[0003] All-sky imagers are usually used in outdoor environments, and the scene used is cloud map observation in the meteorological field. The camera is facing the sky and is easily affected by dust, rain and other pollutants. In the existing technology, dust covers are often used to prevent pollutants from entering the instrument, but the dust covers are still contaminated by dust, rain, etc., causing the camera to take blurry pictures. When encountering heavy rain and snow, snow or ice will accumulate on the dust cover, affecting the camera's photography. Utility Model Content

[0004] The utility model aims to provide an air duct device for an all-sky imager, which can solve the deficiencies in the prior art and can not only effectively prevent dust, rain, snow and other debris from entering the camera module of the all-sky imager, but also can melt the snow accumulated on the camera lens part of the camera module and has a drainage function to avoid moisture accumulation on the periphery of the camera module and affect the normal use of the camera module.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A wind duct device for an all-sky imager comprises an imager housing and a camera carrier housing coaxially arranged from outside to inside and a connecting plate connecting the imager housing and the camera carrier housing.

[0007] The imager housing and the camera carrier housing are both hollow cylindrical structures, and the cavity between the imager housing and the camera carrier housing forms a longitudinal air duct.

[0008] A partition is arranged inside the camera carrier shell, and the partition divides the inner cavity of the camera carrier shell into an upper cavity and a lower cavity; the upper cavity is used to install the camera module, and an air inlet duct is arranged in the lower cavity, and the air inlet duct is connected to the longitudinal air duct.

[0009] An annular water baffle is installed at the top opening of the camera carrier shell; an annular cover is installed at the top opening of the imager shell; the area between the annular cover and the annular water baffle forms a transverse air duct; the transverse air duct is connected to the longitudinal air duct.

[0010] As a further improvement of the above solution, a through hole is opened in the middle of the partition.

[0011] As a further improvement of the above solution, a heating component is installed in the transverse air duct.

[0012] As a further improvement of the above scheme, the annular water baffle plate and the annular cover plate are both provided with through holes; the lens of the camera module passes through the through holes on the annular water baffle plate and the annular cover plate in turn; and an air duct outlet is provided between the lens and the annular cover plate.

[0013] As a further improvement of the above solution, the air inlet duct is arranged horizontally, and its two ends are respectively fixed on the inner wall of the lower end of the camera carrier shell.

[0014] As a further improvement of the above solution, an air inlet is provided on the air inlet guide duct, and a fan is installed at the air inlet.

[0015] As a further improvement of the above solution, the annular water baffle is provided with screw holes for fixing the heating component.

[0016] As a further improvement of the above solution, the middle part of the annular cover plate is a flat plate, and the slope from the middle to the periphery is downward.

[0017] As a further improvement of the above solution, the middle part of the annular water baffle is a flat plate, the slope from the middle to the outer periphery is downward, and the slope of the annular water baffle is greater than the slope of the annular cover plate.

[0018] As a further improvement of the above solution, the transverse air duct and the longitudinal air duct are both annular.

[0019] Compared with the prior art, the advantages of the utility model are:

[0020] (1) The utility model can realize the water drainage function through the combined design of the imager housing and the camera carrier housing, and the through hole is opened on the partition. In addition, the integrated and detachable camera module is installed inside the camera carrier housing, which can prevent rain and snow from entering the camera module and reduce the impact of rain and snow on the camera lens. The imager housing and the camera carrier housing are both cylindrical structures with holes at the bottom and have a water drainage function. The camera module is an integrated module of the camera lens and is a separate structure from the camera carrier housing. The water flow inside the camera carrier housing will not enter the camera module, reducing the impact of rain and snow on the camera lens.

[0021] (2) The utility model designs an air duct structure consisting of a longitudinal air duct and a transverse air duct, and arranges an annular water baffle at the end of the air duct, which can both increase the air duct wind speed in the positive direction and achieve reverse water blocking. The gas in the longitudinal air duct passes through the annular heating component fixed on the upper surface of the annular water baffle, and the gas is heated by the annular heating component to become hot gas, and then enters the annular transverse air duct. As the annular longitudinal air duct transitions to the annular transverse air duct, the volume of the cavity gradually decreases. The wind speed of the hot gas in the annular transverse air duct increases. The hot gas is quickly blown out from the annular air duct outlet. A conical hot gas barrier is formed around the lens to melt the ice and snow around the lens, isolate the dust on the lens, and minimize the impact of dust, rain and snow on the camera lens.

[0022] (3) The air duct device of the all-sky imager described in the utility model has the functions of dustproof, rainproof and snowproof. The device can melt the snow on the camera lens and the ice and snow entering the air duct by arranging a heating component. Specifically, by arranging an annular heating component on the annular water baffle, the discharge of snow can be accelerated, so that the gas at the air outlet forms a conical hot gas barrier around the camera lens, melting the snow on the camera lens. The annular heating component heats the gas in the annular transverse air duct, and the snow in the annular transverse air duct is melted into water by the hot gas, thereby entering the interior of the camera carrier shell and being discharged through the through hole and the opening at the bottom of the imager shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of the air duct device of the all-sky imager in the utility model;

[0024] Figure 2 It is a side cross-sectional view of the air duct device of the all-sky imager in the utility model;

[0025] Figure 3 It is a bottom view of the air duct device of the all-sky imager in the utility model;

[0026] Figure 4 It is an internal diagram of the wind duct device of the all-sky imager in the utility model;

[0027] Figure 5 It is a top view of the air duct device of the all-sky imager in the utility model;

[0028] Figure 6 It is a structural schematic diagram of the annular cover plate in the utility model;

[0029] Figure 7 It is a structural schematic diagram of the annular water retaining plate in the utility model;

[0030] Figure 8 It is an application schematic diagram of the utility model.

[0031] in:

[0032] 1. All-sky imager, 2. Lens, 3. Support rod, 4. Central control module, 5. Screw hole, 6. Air inlet duct, 7. Air duct outlet, 8. Imager housing, 9. Camera carrier housing, 10. Camera module, 11. Annular cover plate, 12. Annular water baffle, 13. Heating component, 14. Through hole, 15. Longitudinal air duct, 16. Connecting plate, 17. Inner wall of lower cavity, 18. Air inlet, 19. Partition. DETAILED DESCRIPTION

[0033] The utility model is further described below in conjunction with the accompanying drawings:

[0034] like Figure 1 to Figure 7 The wind duct device of the all-sky imager shown in the figure comprises an imager housing 8 and a camera carrier housing 9 coaxially arranged from outside to inside and a connecting plate 16 connecting the imager housing 8 and the camera carrier housing 9.

[0035] The imager housing 8 and the camera carrier housing 9 are both hollow cylindrical structures, and the cavity between the imager housing 8 and the camera carrier housing 9 forms a longitudinal air duct 15. Specifically, the cylindrical outer wall of the camera carrier housing 9 and the cylindrical inner wall of the imager housing 9 form a cylindrical annular cavity, which is an annular longitudinal air duct 15. The bottom opening of the camera carrier housing 9 and the bottom opening of the imager housing 8 have a water drainage function. The imager housing 8 and the camera carrier housing 9 are both cylindrical structures with openings at the bottom, and the height of the camera carrier housing 9 is less than the height of the imager housing 8. The camera carrier housing 9 is located inside the imager housing 8, and the camera carrier housing 9 forms an annular structure with the imager housing 8. The upper section of the camera carrier housing 9 and the upper section of the imager housing 8 are horizontally aligned.

[0036] A partition 19 is provided inside the camera carrier housing 9, and the partition 19 divides the inner cavity of the camera carrier housing 9 into an upper cavity and a lower cavity; the upper cavity is used to install the camera module 10, and the lower cavity is provided with an air inlet duct 6, and the air inlet duct 6 is connected to the longitudinal air duct 15. A through hole 14 is provided in the middle of the partition 19 for draining water. The imager housing 8 and the camera carrier housing 9 form an annular cylindrical structure with a bottom opening, and the air inlet duct 6 arranged horizontally is vertically penetrated at the inner wall 17 of the lower cavity of the camera carrier housing 9. The air inlet duct 6 is in the shape of a pipe, and an air inlet 18 is provided directly below it. A fan is installed below the opening of the air inlet, and external air is sucked into the air inlet 18 by the fan. The two ends of the air inlet duct 6 are installed on the inner wall 17 of the lower cavity. The camera module 10 is a cylindrical structure, and the camera lens 2 is at the top of the camera module 10. The diameters of the camera module 10 , the camera carrier housing 9 , and the imager housing 8 are arranged from small to large in sequence, ensuring that the camera module 10 can be fixed in the camera carrier housing 9 .

[0037] An annular water baffle 12 is installed at the top opening of the camera carrier housing 9; an annular cover plate 11 is installed at the top opening of the imager housing 8; the area between the annular cover plate 11 and the annular water baffle 12 forms a transverse air duct; the transverse air duct is connected to the longitudinal air duct 15. The annular water baffle 12 has the functions of increasing the wind speed of the air duct in the positive direction and blocking water in the reverse direction.

[0038] The gas in the longitudinal air duct 25 passes through the annular heating component 13 fixed on the upper surface of the annular water baffle 12, and the gas is heated by the annular heating component 13 to become hot gas, and enters the annular transverse air duct. Since the slope of the annular water baffle 12 is greater than the slope of the annular cover plate 11, the cavity volume of the annular transverse air duct gradually decreases, and the wind speed is accelerated. When the all-sky imaging system encounters heavy rain and snow weather, when rain and snow enter the air duct pipe from the annular air duct outlet, the hot gas in the annular transverse air duct will melt the ice and snow into water, and the annular water baffle prevents the water from entering the longitudinal air duct.

[0039] As a further improvement of the above scheme, a heating component 13 is installed in the transverse air duct. The annular water baffle plate 12 is provided with screw holes 5 for fixing the heating component. The heating component 13 is installed on the annular water baffle plate 12 through screws and screw holes. The annular heating component 13 is fixed on the upper surface of the annular water baffle plate 12. When the air of the annular longitudinal air duct 15 is blown into the annular transverse air duct, it will pass through the annular heating component 13, and the air will be heated by the annular heating component 13 and become hot gas. The annular transverse air duct is connected to the air duct outlet.

[0040] As a further improvement of the above scheme, the annular water baffle 12 and the annular cover plate 11 are provided with through holes; the lens 2 of the camera module 10 passes through the through holes on the annular water baffle 12 and the annular cover plate 11 in turn; an air duct outlet 7 is provided between the lens 2 and the annular cover plate 11. The diameter of the circular hole of the annular water baffle 12 is smaller than the inner diameter of the cylindrical body of the camera carrier shell 9. When water flows into the interior of the camera carrier shell 9, it flows out through the bottom opening of the camera carrier shell 9 and the bottom opening of the imager housing 8, and will not flow into the camera module 10. The camera module 10 is an integrated module of the camera lens, and is a separate structure from the camera carrier shell 9. The water flow inside the camera carrier shell 9 will not enter the camera module 10, reducing the impact of rain and snow on the camera lens.

[0041] As a further improvement of the above solution, the air inlet duct is arranged horizontally, and its two ends are respectively fixed to the inner wall of the lower end of the camera carrier housing. The air inlet duct 6 is provided with an air inlet 18, and a fan is installed at the air inlet 18. The fan is used to inhale external air into the air duct.

[0042] As a further improvement of the above scheme, the middle part of the annular cover plate 11 is a flat plate, and the slope from the middle to the periphery is downward. The middle part of the annular water baffle plate 12 is a flat plate, and the slope from the middle to the periphery is downward, and the slope of the annular water baffle plate 12 is greater than that of the annular cover plate 11.

[0043] The annular transverse air duct is formed into an annular cavity by the inner wall of the annular cover plate 11 and the upper surface of the annular water baffle plate 12. The annular longitudinal air duct 15 is connected to the annular transverse air duct. The volume of the cavity gradually decreases from the annular longitudinal air duct 15 to the annular transverse air duct. The air duct outlet 7 is an annular structure surrounding the camera lens 10. The lens 2 of the integrated camera module protrudes from the circular hole of the annular cover plate 11 and leaves a gap with the circular hole. The gap is the annular air duct outlet 7. The air duct outlet 7 is composed of an annular cover plate 11, an annular water baffle plate 12, a heating component 13, and an air duct outlet 7. The annular cover plate 11 is an annular structure with a circular hole in the middle, and the directions from the periphery of the hole to the periphery of the annular cover plate 11 are horizontal and slope downward in turn. The annular cover plate 11 is fixed to the upper section of the imager housing 8 by buckling. The annular water baffle plate 12 is an annular structure with a circular hole in the middle, and the slope is downward from the periphery of the hole, and the slope is greater than the slope of the annular cover plate 11. The diameter of the circular hole of the annular water baffle plate 12 is larger than the diameter of the camera module 10, and smaller than the inner diameter of the cylindrical body of the camera carrier housing 9. The annular water baffle plate 12 is buckled and fixed to the upper section of the camera carrier housing 9, forming a circle of annular water baffle strips inside the camera carrier housing 9. There is a certain distance between the inner wall of the annular cover plate 11 and the upper surface of the annular water baffle plate 12, and the distance changes from large to small when viewed from the direction of the air duct.

[0044] The working process of the utility model is:

[0045] like Figure 8 The all-sky imager system shown includes an all-sky imager 1, a central control module 4 and a support rod 3. The air duct device shown in the utility model is located inside the all-sky imager 1, and the air duct outlet 7 is located around the camera lens 2 at the top of the all-sky imager. The all-sky imager is located at the top of the support rod 3, the side of the support rod is the central control module 4, and the bottom of the support rod is designed to be a device that can be fixed on the ground.

[0046] The central control module 4 has a power supply and a control system. When the all-sky imager system is powered on, the electric fan at the bottom of the all-sky imager starts to work and sucks in external air into the air duct. External air enters from the air inlet 18 of the horizontally arranged air inlet duct 6, and enters the longitudinal air duct 15 from the left and right pipe openings of the horizontal air inlet duct 6. The gas in the longitudinal air duct 15 passes through the annular heating component 13 fixed on the upper surface of the annular water baffle 12, and the gas is heated by the annular heating component 13 to become hot gas and enter the annular transverse air duct. Since the slope of the annular water baffle 12 is greater than the slope of the annular cover plate 11, the cavity volume of the annular transverse air duct gradually decreases, which speeds up the wind speed. The hot gas in the annular transverse air duct is quickly blown out from the annular air duct outlet 7. A conical hot gas barrier is formed around the camera lens 2 to isolate dust, rain and snow to the greatest extent.

[0047] When the all-sky imaging system encounters heavy rain and snow weather, when the rain and snow enter the air duct from the annular air duct outlet 7, the hot gas in the annular transverse air duct will melt the ice and snow into water, and the annular water baffle 12 will prevent the water from entering the longitudinal air duct 15. The diameter of the circular hole of the annular water baffle 12 is smaller than the diameter of the inner side of the cylinder of the camera carrier shell 9. The water will flow into the camera carrier shell 9, and then flow out through the bottom opening of the camera carrier shell 9 (i.e., the through hole 14) and the bottom opening of the imager housing 8, and will not enter the camera module 10.

[0048] The above-described embodiments are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A wind duct device for an all-sky imager, characterized in that: The device comprises an imager housing (8) and a camera carrier housing (9) coaxially arranged from outside to inside, and a connecting plate (16) connecting the imager housing (8) and the camera carrier housing (9); The imager housing (8) and the camera carrier housing (9) are both hollow cylindrical structures, and the cavity between the imager housing (8) and the camera carrier housing (9) forms a longitudinal air duct (15); A partition (19) is provided in the camera carrier shell (9), and the partition (19) divides the inner cavity of the camera carrier shell (9) into an upper cavity and a lower cavity; the upper cavity is used to install the camera module (10), and an air inlet duct (6) is provided in the lower cavity, and the air inlet duct (6) is connected to the longitudinal air duct (15); An annular water baffle (12) is installed at the top opening of the camera carrier shell (9); an annular cover plate (11) is installed at the top opening of the imager housing (8); a transverse air duct is formed in the area between the annular cover plate (11) and the annular water baffle (12); and the transverse air duct is connected to the longitudinal air duct (15).

2. The wind duct device of the all-sky imager according to claim 1, characterized in that: A through hole (14) is provided in the middle of the partition (19).

3. The wind duct device of the all-sky imager according to claim 1, characterized in that: A heating component (13) is installed in the transverse air duct.

4. The wind duct device of the all-sky imager according to claim 1, characterized in that: The annular water baffle plate (12) and the annular cover plate (11) are both provided with through holes; the lens (2) of the camera module (10) passes through the through holes on the annular water baffle plate (12) and the annular cover plate (11) in sequence; and an air duct outlet (7) is provided between the lens (2) and the annular cover plate (11).

5. The wind duct device of the all-sky imager according to claim 1, characterized in that: The air inlet guide pipe is arranged horizontally, and two ends of the air inlet guide pipe are respectively fixed on the inner wall of the lower end of the camera carrier shell.

6. The wind duct device of the all-sky imager according to claim 1, characterized in that: The air inlet guide pipe (6) is provided with an air inlet (18), and a fan is installed at the air inlet (18).

7. The wind duct device of the all-sky imager according to claim 3, characterized in that: The annular water baffle plate (12) is provided with screw holes (5) for fixing the heating component.

8. The wind duct device of the all-sky imager according to claim 1, characterized in that: The middle part of the annular cover plate (11) is a flat plate, and the slope from the middle to the outer periphery is downward.

9. The wind duct device of the all-sky imager according to claim 8, characterized in that: The middle part of the annular water baffle plate (12) is a flat plate, and the slope from the middle to the outer periphery is downward, and the slope of the annular water baffle plate (12) is greater than the slope of the annular cover plate (11).

10. The wind duct device of the all-sky imager according to claim 1, characterized in that: The transverse air duct and the longitudinal air duct are both annular.

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