CN217283050U - Video camera - Google Patents

Abstract

The utility model relates to a camera, which comprises a lens component and a rainproof component; the lens component comprises a lens; the rain-proof component is arranged at the top of the lens component and comprises an airflow generating device and a wind guide piece, the wind guide piece is provided with an air inlet, a first air outlet and a second air outlet, the first air outlet faces the lens, and the second air outlet faces the object side of the lens; the air flow output by the air flow generating device can flow into the air guide piece from the air inlet and flow out from the first air outlet and the second air outlet. In the camera, the air guide is arranged at the top of the lens assembly, and the second air outlet of the air guide faces the object side of the lens, so that the air flow flowing out of the second air outlet can form an air curtain for preventing rainwater from falling onto the surface of the lens on the front side of the lens; and because first air outlet is towards the camera lens, consequently can blow the drop of water top-down that remains on the camera lens surface by the air current of first air outlet outflow to ensure the definition and the accuracy of camera lens shooting picture.

Description

Video camera

Technical Field

The utility model relates to a supervisory equipment technical field especially relates to a camera.

Background

Be applied to open air surveillance camera head often can face abominable sleet weather, and the rainwater can constantly drift and hang on the window surface of camera, influences the picture quality of camera image, and reduce resolution ratio influences surveillance video's definition and accuracy.

Some cameras are provided with a rain shielding plate above the lens, but rainwater still possibly falls on the surface of the window when falling obliquely, and some cameras are provided with a windscreen wiper on the surface of the lens, but the windscreen wiper can intermittently block the sight, and the surface of the window is easy to damage after being used for a long time.

SUMMERY OF THE UTILITY MODEL

In view of the above, it is necessary to provide a camera capable of preventing rainwater from falling to the surface of the lens and removing rainwater that has flowed on the surface of the lens to ensure the clarity of a shot picture of the lens.

The utility model provides a camera, which comprises a lens component, a lens and a lens holder; the rainproof assembly is arranged at the top of the lens assembly and comprises an airflow generating device and a wind guide piece, the wind guide piece is provided with an air inlet, a first air outlet and a second air outlet, the first air outlet faces the lens, and the second air outlet faces the object side of the lens; the air flow output by the air flow generating device can flow into the air guide piece from the air inlet and flow out from the first air outlet and the second air outlet.

In the camera, the air guide is arranged at the top of the lens assembly, and the second air outlet of the air guide faces the object side of the lens, so that the air flow flowing out of the second air outlet can form an air curtain for blocking rainwater from falling onto the surface of the lens on the front side of the lens, and meanwhile, the trend of the rainwater can be changed when the rainfall is small, and the rainwater is prevented from falling onto the surface of the lens; and because the air guide is arranged at the top of the lens component, and the first air outlet faces the lens, the air flow flowing out of the first air outlet can blow the water drops remained on the surface of the lens from top to bottom, so that the definition and the accuracy of the shot picture of the lens are guaranteed.

In one embodiment, the air flow generating device comprises a first air flow generating device and a second air flow generating device, and the air inlet comprises a first air inlet and a second air inlet; the air flow output by the first air flow generating device flows into the air guide piece from the first air inlet and flows out from the first air outlet; and the air flow output by the second air flow generating device flows into the air guide piece from the second air inlet and flows out from the second air outlet.

So set up, first air current generating device and second air current generating device are respectively to first air outlet and second air outlet output air current, can strengthen wind-force, improve the efficiency of getting rid of the drop of water that remains on the camera lens surface, and the reinforcing air curtain blocks the ability that rainwater falls to the camera lens surface.

In one embodiment, the first air outlet and the second air outlet are provided in a plurality of numbers.

So set up, a plurality of first air outlets can improve the efficiency that will remain the drop of water on lens surface and blow off, and a plurality of second air outlets can improve the ability that the air curtain blocks rainwater and falls to the lens surface.

In one embodiment, the lens assembly further comprises a housing having a window, the lens is disposed in the housing, and the lens faces the window; the rainproof assembly is arranged on the outer side of the top wall of the shell.

So set up, the heat that the long-time work of casing can avoid air current generating device to produce influences the normal work of camera lens to, can also protect the camera lens not influenced by external environment.

In one embodiment, the rain-proof assembly further includes a rain-proof cover disposed on the top of the air guide, and the rain-proof cover extends obliquely upward toward the object side of the lens.

So set up, rain-proof cover also can block that the rainwater falls to the camera lens surface to rain-proof cover upwards extends towards the incline of the object side of camera lens, can avoid the extension section to block the shooting sight of camera lens.

In one embodiment, the rain cover is rotatably connected with the shell around a certain axis.

So set up, can adjust the rain-proof cover for the degree of sheltering from of camera lens subassembly according to the angle of field of camera lens and the abominable degree in sleet weather among the in-service use process, guarantee that the camera can be applicable to multiple different environment.

In one embodiment, the rain cover comprises a top plate and two side plates which are fixed with each other.

So set up, the roof is used for blockking the rainwater that falls from the upside, and the curb plate is used for blockking the rainwater that falls from both sides, improves the ability that rain-proof cover blockked the rainwater.

In one embodiment, the camera further comprises a rotating member passing through the side plate and connected to the side wall of the housing such that the rain shield is rotatable relative to the housing about the rotating member.

So set up, can dismantle fast or install rain-proof cover to maintain or change.

In one embodiment, the side plate is provided with an arc-shaped hole, the side wall of the housing is provided with a locking portion, and the camera further comprises a fixing member, wherein the fixing member can extend into the arc-shaped hole and is matched with the locking portion so as to lock the rotation of the rain cover relative to the housing at any position.

By the arrangement, the fixing piece can be fixed with the locking part and tightly press the edge of the arc-shaped hole so as to lock the rotation of the rain cover relative to the shell, so that the stability of the rain cover is ensured, and the looseness of the rain cover is prevented; simultaneously, the arc-shaped hole can also limit the rotation angle of the rain cover, so that the rotation angle of the rain cover is prevented from being too large and shielding the sight of the lens.

In one embodiment, the parts of the two side plates, which extend beyond the lens, are provided with air vents.

So set up, ventilative mouth can see through the side and come the wind to prevent that the wind-force is too big and lead to the camera to rock.

In one embodiment, the window is inclined away from the lens along the direction from the top to the bottom of the lens assembly.

So set up, the window that the slope set up can prevent to a certain extent rainwater adhesion and improve the velocity of water flow to the air current direction slope of following the outflow of first air outlet can also further accelerate the drop of water flow velocity on window surface under the effect of air current.

In one embodiment, the outer surface of the window is coated with a hydrophobic coating.

So set up, window surface coating's hydrophobic coating can promote drop of water flow and ice and snow to clear away.

Drawings

Fig. 1 is a schematic structural diagram of a camera according to an embodiment of the present invention;

fig. 2 is an exploded view of fig. 1 provided by the present invention;

fig. 3 is a cross-sectional view of fig. 1 provided by the present invention;

fig. 4 is an enlarged view of a point a in fig. 3 provided by the present invention.

Description of the main elements

1. A lens assembly; 11. a lens; 12. a housing; 121. a window; 122. a locking portion; 2. a rain-proof component; 21. an air flow generating device; 22. an air guide member; 221. an air inlet; 222. a first air outlet; 223. a second air outlet; 23. a rain cover; 231. a top plate; 232. a side plate; 2321. an arc-shaped hole; 2322. a ventilation opening; 4. a rotating member; 5. a fixing member; 6. a power supply control component; 7. a light supplement lamp assembly; 8. and (5) sealing rings.

The present invention is further described in detail with reference to the drawings and the detailed description.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

Be applied to open air surveillance camera head often can face abominable sleet weather, and the rainwater can constantly drift and hang on the window surface of camera, influences the picture quality of camera image, and reduce resolution ratio influences surveillance video's definition and accuracy. In the related art, although a part of cameras are provided with a rain shielding plate above the lens or provided with an air curtain in front of the lens to shield part of rainwater, the rainwater may still fall on the surface of the window when falling obliquely under the action of natural wind, and the residual water drops on the surface of the window still cannot be removed. Therefore, the wiper is arranged on the surface of the lens of some cameras to remove the residual water drops on the surface of the window, but the wiper can discontinuously block the sight and easily damage the surface of the window after being used for a long time; some cameras will remain the water droplet on the surface of the window through being provided with the blowing port towards the window around and blow or dry, but when the rainwater carries the dust, the water stain is remained easily on the surface of the window blow-dried or dried, and the definition of the image picture is obtained.

In order to solve the above problem, as shown in fig. 1 to 4, the present invention provides a camera, which can prevent rainwater from floating to the surface of a lens, and can also remove rainwater that has flowed and hung on the surface of the lens, thereby ensuring the definition of the shot picture of the lens.

As shown in fig. 3 to 4, specifically, the camera includes a lens assembly 1 and a rain-proof assembly 2; the lens assembly 1 includes a lens 11; the rain-proof component 2 is disposed on the top of the lens component 1, the rain-proof component 2 includes an airflow generating device 21 and a wind guiding member 22, the wind guiding member 22 has an air inlet 221, a first air outlet 222 and a second air outlet 223, the first air outlet 222 faces the lens 11, and the second air outlet 223 faces the object side of the lens 11; the airflow output by the airflow generating device 21 can flow into the air guide 22 from the air inlet 221 and flow out from the first air outlet 222 and the second air outlet 223.

As described above, in the related art, some cameras have a wiper blade disposed on the surface of a lens to remove the residual water drops on the surface of a window, but the wiper blade may block the view intermittently and may damage the surface of the window after long-term use; some cameras will remain the water droplet on the surface of the window through being provided with the blowing port towards the window around and blow or dry, but when the rainwater carries the dust, the water stain is remained easily on the surface of the window blow-dried or dried, and the definition of the image picture is obtained. In the camera provided by the embodiment of the present invention, because the wind guide 22 is disposed at the top of the lens assembly 1, and the first air outlet 222 faces the lens 11, the air flow flowing out from the first air outlet 222 can blow off the water drops remaining on the surface of the lens 11 from top to bottom, so that even if the rain water carries dust, the dust can fall along with the water drops, thereby ensuring that no water stain remains on the surface of the lens 11; moreover, the airflow does not contact the lens 11 in a reciprocating manner like a wiper, which may cause damage to the lens 11 or block the view of the lens 11, thereby ensuring the definition and accuracy of the shot image.

And simultaneously, in the camera provided by the embodiment of the utility model, because wind-guiding piece 22 sets up in the top of camera lens subassembly 1 to second air outlet 223 is towards the thing side of camera lens 11, consequently, can form the air curtain that is used for keeping off rainwater and falls to camera lens 11 surface by the air current that second air outlet 223 flowed out in the front side of camera lens 11, can also change the trend of rainwater simultaneously when the rainfall is less, prevents that rainwater from falling to camera lens 11 surface.

As shown in fig. 2 to 4, the lens assembly 1 further includes a housing 12 having a window 121, the lens 11 is disposed in the housing 12, the lens 11 faces the window 121, and the rain-proof assembly 2 is disposed outside a top wall of the housing 12. The housing 12 can protect the lens 11 from the external environment, and the rain-proof component 2 is disposed on the top wall of the housing 12, so that the housing 12 can prevent the heat generated by the long-time operation of the airflow generating device 21 from affecting the normal operation of the lens 11.

Furthermore, the camera further includes a power control assembly 6 and a fill-in light assembly 7 disposed in the housing 12. The sealing ring 8 is arranged at the joint of the window 121 and the shell 12, the sealing ring 8 can prevent external water mist from entering the shell 12 to affect the normal use of each device, and certainly, the joint of the window 121 and the shell 12 can be sealed in other forms such as dispensing.

As shown in fig. 2 to 3, in the illustrated embodiment, the air guide 22 is approximately a single air guide structure, and an air duct is independently formed inside the air guide, and the air guide may be an integrated structure or a split structure; in another embodiment, the air guide 22 may be a plurality of plate bodies, and form a structure having an internal air duct by being enclosed with the top wall of the casing 12.

In one embodiment, there is only one air channel in the air guide 22, and the number of the air flow generating devices 21 and the number of the air inlets 221 are both one, and the air flow output by the air flow generating devices 21 flows into the air channel of the air guide 22 from the air inlets 221 and flows out from the first air outlets 222 and the second air outlets 223. In another embodiment, the air guide 22 has two air ducts therein, the air inlet includes a first air inlet and a second air inlet, and each air duct is provided with an air inlet and an air outlet, respectively, and the airflow generating device 21 includes a first airflow generating device and a second airflow generating device; the airflow output by the first airflow generating device flows into the first air duct of the air guide 22 from the first air inlet and flows out from the first air outlet 222; the airflow output by the second airflow generating device flows into the second air duct of the air guide 22 from the second air inlet, and flows out from the second air outlet 223. The first airflow generating device and the second airflow generating device respectively output airflow for the first air outlet 222 and the second air outlet 223, so that wind power is enhanced, the efficiency of removing water drops remained on the surface of the window 121 is improved, and the capability of the air curtain for preventing rainwater from falling on the surface of the window 121 is enhanced.

The airflow generating device 21 may be a centrifugal fan, an axial fan, an air pump, or other devices capable of generating an airflow, and is not limited in particular. The air flows from the first air outlet 222 and the second air outlet 223 can be cold air, and the cold air can condense the gas in the air into water to form water drops with larger weight, so that the adsorption capacity of the water drops and the glass surface is relatively reduced, the flowing falling speed of the large water drops is promoted, and the efficiency of removing the water drops is improved; the air flows from the first air outlet 222 and the second air outlet 223 may be hot air, and the hot air can promote vaporization and volatilization of small water drops on the surface of the lens 11 and dry the surface of the window after blowing large water drops, so as to improve the efficiency of removing water drops; of course, the first air outlet 222 and the second air outlet 223 can also freely switch air sources with different temperatures as required.

The air inlet 221 is provided with a filter screen or foam for filtering dust in the air. The air inlet 221 may be in communication with both sides of the air flow generating device 21, or in communication with the rear side of the air flow generating device 21, and the specific position is not particularly limited.

In an embodiment, the number of the first air outlets 222 and the number of the second air outlets 223 are both set to be plural, the plural first air outlets 222 can improve the efficiency of blowing off the water drops remaining on the surface of the lens 11, and the plural second air outlets 223 can improve the ability of the air curtain to block the rain water from falling on the surface of the lens 11. The first air outlet 222 and the second air outlet 223 are respectively arranged along the width direction of the lens assembly 1 at regular intervals. Of course, in other embodiments, the first air outlet 222 and the second air outlet 223 may also be a strip-shaped air outlet and respectively extend along the width direction of the lens assembly 1.

As shown in fig. 1 to fig. 3, the rain-proof assembly 2 further includes a rain-proof cover 23 disposed on the top of the wind guide 22, and the rain-proof cover 23 extends upward and slantwise toward the object side of the lens 11. Rain-proof cover 23 also can block that rainwater falls to camera lens 11 surface to rain-proof cover 23 upwards extends towards the slope of the thing side of camera lens 11, can avoid the extension section to block the shooting sight of camera lens 11. Rain-proof cover 23 includes roof 231 and two curb plates 232 of mutual fixation, and roof 231 is used for blockking the rainwater that falls from the upside, and curb plate 232 is used for blockking the rainwater that falls from both sides, further improves rain-proof cover 23 and blocks the ability of rainwater.

The part of two curb plates 232 that extend beyond camera lens 11 has seted up ventilative mouth 2322, and ventilative mouth 2322 can see through the side and come the wind to prevent that the wind-force is too big and lead to the camera to rock, ventilative mouth 2322 is the shutter formula structure, thereby can prevent that the rainwater from passing through ventilative mouth 2322 splash to window 121 surface from the side.

As shown in fig. 1 to 2, the side plate 232 is rotatably connected to the side wall of the housing 12 around a certain axis, so that the shielding degree of the rain cover 23 relative to the lens assembly 1 can be adjusted according to the angle of view of the lens 11 and the severity of rain and snow weather in the actual use process, and the camera can be suitable for various different environments.

In one embodiment, the camera further comprises a swivel member 4, the swivel member 4 passing through the side plate 232 and being connected to a side wall of the housing 12, such that the rain shield 23 is able to swivel about the swivel member 4 relative to the housing 12. The rotating member 4 may be a screw, and the screw penetrates through the side plate 232 and is fixed to the housing 12 through thread fit, so that the rain cover 23 can be quickly detached or installed for maintenance or replacement. Of course, in other embodiments, the side plate 232 may be connected to the side wall of the housing 12 through a rotation pin or other structures as long as it can ensure that the rain cover 23 can rotate relative to the housing 12.

It is understood that the rotation of the rain cover 23 relative to the housing 12 may be manually adjusted by rotation, or may be a motor or other external tool capable of rotating the rain cover 23, and is not limited in this respect.

As shown in fig. 1 to 2, the side plate 232 is provided with an arc-shaped hole 2321, the side wall of the housing 12 is provided with a locking portion 122, the camera further includes a fixing member 5, and the fixing member 5 can extend into the arc-shaped hole 2321 and cooperate with the locking portion 122 to lock the rotation of the rain cover 23 relative to the housing 12 at any position. When the rain cover 23 needs to be adjusted, the fixing member 5 is separated from the locking portion 122, so that the angle adjustment of the rain cover 23 can be conveniently realized; after the angle is adjusted to a proper angle, the fixing piece 5 extends inwards into the arc-shaped hole 2321 from the outer side of the side plate 232 and is fixed with the locking portion 122, and the edge of the arc-shaped hole 2321 is pressed tightly to lock the rotation of the rain-proof cover 23 relative to the shell 12, so that the stability of the rain-proof cover 23 is ensured, and the looseness of the rain-proof cover 23 is prevented; simultaneously, the arc-shaped hole 2321 can also limit the rotation angle of the rain cover 23, so that the phenomenon that the rotation angle of the rain cover 23 is too large to block the sight of the lens 11 is prevented.

In one embodiment, the fixing member 5 is a screw, the locking portion 122 is a threaded hole engaged with the screw, and the fixing member 5 extends inward from the outer side of the side plate 232 into the arc-shaped hole 2321 and engages with the threaded hole of the locking portion 122 to press and fix the edge of the arc-shaped hole 2321 between the fixing member 5 and the housing 12. In other embodiments, the fixing member 5 and the locking portion 122 may be fixed by plugging, snapping, or other forms.

As shown in fig. 1 to 3, the window 121 is disposed to be inclined in a direction away from the lens 11 in a direction from the top to the bottom of the lens assembly 1, and an outer surface of the window 121 is coated with a hydrophobic coating. The window 121 arranged obliquely can prevent rainwater from adhering and improve the water flow speed to a certain extent, and the flow speed of water drops on the surface of the window 121 can be further increased under the action of the airflow by inclining along the airflow direction flowing out of the first air outlet 222; the hydrophobic coating coated on the surface of the window 121 can promote the flow of water drops and the removal of ice and snow, and can be a hydrophobic film, an ice-repelling film and the like. The window 121 may be made of plastic material, glass material, etc., as long as it is ensured that the window 121 does not affect the shooting effect of the lens 11, which is not limited herein. The window 121 may also be a heating window, which can promote the vaporization and volatilization of water droplets on the surface of the window 121 after heating.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (12)

1. A camera, comprising:

a lens assembly (1) comprising a lens (11);

the rainproof assembly (2) is arranged at the top of the lens assembly (1), the rainproof assembly (2) comprises an airflow generating device (21) and an air guide (22), the air guide (22) is provided with an air inlet (221), a first air outlet (222) and a second air outlet (223), the first air outlet (222) faces the lens (11), and the second air outlet (223) faces the object side of the lens (11); the airflow output by the airflow generating device (21) can flow into the air guide (22) from the air inlet (221) and flow out from the first air outlet (222) and the second air outlet (223).

2. The camera according to claim 1, wherein the airflow generating device (21) comprises a first airflow generating device and a second airflow generating device, and the air inlet (221) comprises a first air inlet and a second air inlet;

the airflow output by the first airflow generating device flows into the air guide piece (22) from the first air inlet and flows out from the first air outlet (222); the air flow output by the second air flow generating device flows into the air guide component (22) from the second air inlet and flows out from the second air outlet (223).

3. The camera according to claim 1, wherein the first outlet (222) and the second outlet (223) are provided in plural numbers.

4. The camera according to claim 1, wherein the lens assembly (1) further comprises a housing (12) having a window (121), the lens (11) being disposed within the housing (12) with the lens (11) facing the window (121);

the rainproof assembly (2) is arranged on the outer side of the top wall of the shell (12).

5. The camera according to claim 4, wherein the rain-proof assembly (2) further comprises a rain-proof cover (23) disposed on top of the air guide (22), the rain-proof cover (23) extending obliquely upward toward the object side of the lens (11).

6. Camera according to claim 5, characterized in that the rain shield (23) is pivotally connected to the housing (12).

7. The camera according to claim 6, characterized in that the rain shield (23) comprises a top plate (231) and two side plates (232) fixed to each other.

8. The camera of claim 7, further comprising a rotation member (4), the rotation member (4) passing through the side plate (232) and being connected to a side wall of the housing (12) such that the rain shield (23) is rotatable relative to the housing (12) about the rotation member (4).

9. The camera according to claim 7, wherein the side plate (232) is provided with an arc-shaped hole (2321), the side wall of the housing (12) is provided with a locking portion (122), and the camera further comprises a fixing member (5), and the fixing member (5) can extend into the arc-shaped hole (2321) and cooperate with the locking portion (122) to lock the rain shield (23) at any position.

10. The camera according to claim 7, wherein the portion of the two side plates (232) extending beyond the lens (11) is provided with a ventilation opening (2322).

11. The camera according to claim 4, characterized in that the viewing window (121) is arranged obliquely away from the lens (11) in a direction from top to bottom of the lens assembly (1).

12. The camera according to any of the claims 4 to 11, characterized in that the outer surface of the viewing window (121) is coated with a hydrophobic coating.

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