RU146715U1 - EXTERIOR SURVEILLANCE PROTECTION CASING - Google Patents

Abstract

1. A casing for protection against contamination of outdoor surveillance equipment, comprising a closed case, the front end of which has an optical window that opens into a tube made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the camera’s visibility zone, characterized in that in the lower or side at least one hole is made of a part of said tube, through which the tube communicates with the external environment through an air duct fixed to the bottom or side wall of the casing body, while and a heating element is installed in the duct to create a temperature difference between the ambient air and the air inside the tube. 2. A casing according to claim 1, characterized in that the heating element is a radiator of a video camera. The casing according to claim 1, characterized in that the duct extends along the casing body and has an air inlet in the rear part. The casing according to claim 1, characterized in that an air filter is installed in the rear of the duct. The casing according to claim 1, characterized in that the duct is fixed in the lower part of the casing and is connected to the inner cavity of the tube through openings made in the lower part of the tube adjacent to the casing of the casing. 6. The casing according to claim 1, characterized in that a temperature sensor is additionally installed inside the duct.

Description

The invention relates to equipment for outdoor surveillance and means for protecting it from adverse external influences, and more particularly, to a casing for protection against contamination of outdoor surveillance equipment. The utility model can be used in any sector of the economy where video recording and video surveillance are used, in particular, in vehicle security and control systems.

The use of video cameras for outdoor monitoring is associated with the need for their regular maintenance, since when operating outdoors the equipment is exposed to adverse environmental influences. This is especially true in the autumn-winter-spring period when installing cameras near the roadway or in industrial areas. In such conditions, contamination in the form of dust, fogging, drops of water, snow, ice, etc., can accumulate on the equipment surface, including on the optical glass of the casing.

Thanks to the use of special housings (cases, boxes) to protect video equipment and heating elements inside the housing, it was possible to partially limit the influence of adverse environmental factors on the video equipment, as well as to somewhat stabilize the temperature regime of its operation (see, for example, patent RU 52226 U1, IPC: G08B 13 / 196, H05K 5/00, published March 10, 2006, patent RU 40512 U1, IPC: G08B 13/196, H05K 5/00, H05K 5/02, published September 10, 2004, patent US 7440025B, IPC: H04N 5/225, published October 21, 2008). However, the main problems mentioned above remained unresolved. Installing a visor on the protective casing of the camcorder ensures its protection only from rainfall from above. From below and from the sides, the optical window of the casing remains completely unprotected from contamination.

It is known to use a protective hood for WizeBox thermal casings (description on the website: http://videoglaz.ru/good.php?id=9871). According to the description, the hood is made of steel and is designed to protect the glass of the thermal casing from splashes and dust, to increase the vandal resistance of the thermal casing, to prevent light from entering the lens, to increase the contrast of the image of television cameras by reducing the influence of background illumination. The disadvantage of this equipment is that it cannot effectively prevent dust particles from settling, fogging, and ice formation on the casing glass. Particles of dust and moisture suspended in the air can easily enter the inner surface of the hood and settle both on it and on the glass of the casing, which leads to the need for additional maintenance and cleaning of the equipment. In difficult climatic conditions, this can significantly increase maintenance costs and reduce the quality of equipment operation.

The closest analogue of the claimed utility model is the technical solution disclosed in patent RU 2439838 C1 (IPC: H04N 5/64, published January 10, 2012). It describes a casing to prevent contamination of the glass of the front window of the casing of the outdoor surveillance camera. According to the description, a pipe is installed on the outside of the glass of the casing, the first end of which is open to the environment, and the second end closes the specified glass. Using a blower installed inside the casing, create pressure in this pipe that exceeds the pressure outside it, with a heater, heat the air flow in the closed casing of the casing, and the air entering the inlet of the blower machine is cleaned with a filter. This decision is aimed at preventing the accumulation of dust, fogging, the accumulation of water droplets, snow, and icing of the glass of the front window of the casing of the outdoor surveillance camera.

The most significant drawback of the above analogue is that, in accordance with it, air flows through the entire casing and make it leaky, which is extremely undesirable for outdoor equipment. Despite the presence of an air filter in the design of the casing, dust particles and excess moisture will inevitably fall inside it, which will lead to their subsidence on the inner surface of the casing itself, on electronic equipment, circuit boards, the inner side of the casing glass and even the optical glass of the camera. This can reduce the transparency of the glass, the quality of the camera and even disable the equipment, not to mention the need for more frequent and expensive maintenance.

This utility model relates to a casing for protection against contamination of outdoor surveillance equipment.

The technical result consists in minimizing the number of cycles and the cost of maintaining equipment for outdoor monitoring and maintaining its high performance and quality for a long period of time, as well as preventing the formation of contaminants on the optical window of the video camera for outdoor monitoring, including dust settling , drops of water, snow, fogging and icing.

The specified technical result is achieved in that the casing for protection against contamination of outdoor surveillance equipment contains a closed case, the front end of which has an optical window that opens inside the tube, made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the camera’s visibility zone, while in the lower or a side of said tube at least one hole is made through which the tube communicates with the external environment through an air duct fixed to the bottom or side Tenke housing body, inside the duct is installed a heating element for creating a temperature difference between the ambient air and the air inside the tube.

In a preferred embodiment, the heating element is a radiator of a video camera. In some cases, an additional heating element may be installed in the duct.

In a preferred embodiment, the casing duct is secured along the casing body and has an air inlet at the rear.

To clean the air entering the duct from the outside from dust and other mechanical impurities, the duct is equipped with an air filter. It is preferably placed in the rear of the duct for easier replacement and maintenance of the casing.

In a preferred embodiment, the duct is secured to the lower part of the casing and connected to the inner cavity of the tube through an opening made in the lower part of the tube adjacent to the casing.

To control the temperature inside the duct and the tube, a temperature sensor can be additionally installed in the duct.

In FIG. 1 shows a diagram of a casing equipped with a heating element for supplying air to the tube.

The casing contains a closed housing 1, inside of which there is a video camera 2 (see. Fig. 1). At the front end of the housing 1 of the casing there is a glass 7, forming an optical window of the casing of the camera. At the front end of the housing 1 of the casing a tube 3 is fixed, made in the form of a pipe of arbitrary section. The tube is stationary or through a hinge connected with its rear end to the wall of the front end of the housing 1 so that the inner walls of the tube 3 form the boundaries of the visibility zone for the video camera 2 installed inside the housing 1.

The tube 3 may be made of any suitable material, for example, iron or plastic. The surface of the tube 3 can be treated with a special heat-insulating coating. The cross section of the tube tube 3 can be selected depending on the modification of the camera body and the operating conditions of the equipment. The most common is the use of tubes with a circular cross-section of the pipe.

For casings, on the front end of the housing 1 of which there are two or more optical windows 7, tubes 3 are used, consisting of several tubes, each of which can form the boundaries of the visibility zone for each individual camera 2.

For ease of maintenance, the tube 3 can be mounted on the front end of the casing using a hinge. In addition, the tube 3 in some cases is made composite, with the possibility of changing its length due to the displacement of the inner part of the tube relative to the outside. Those. for the purposes of this utility model, it is possible to use a telescopic tube with a variable length. It should be noted that the use of the above tube 3 at the front end of the casing makes it unnecessary to install a protective visor on the casing 1.

The housing 1 of the casing is equipped with an air duct 4, which runs along the housing 1 and ends with an air inlet 6 in its rear part. The atmospheric air entering through the duct 4 enters the tube 3 through an opening made in its wall. Such a hole is preferably located in the lower rear, closest to the housing 1 of the tube 3.

A heating element 5 is provided inside the duct 4. It may be a radiator of the video camera, which transfers the heat generated during the operation of the video equipment into the duct 4, thereby creating a temperature difference between the outside air and the air inside the duct. The location of the heating element 5 inside the duct 4 is selected so that the warmer air rises, falling through an opening in the bottom or side of the tube 3 inside it. Preferred is the location of the heating element 5 in front of the duct 4, closer to the hole in the tube 3. When heated in the duct 4, atmospheric air enters the tube 3 and displaces part of the air from it, creating a continuous air flow. Depending on the external temperature and the amount of heat emitted by the heating element 5, the air flow rate may vary.

In conditions where the radiator of the video camera is not enough to heat the air inside the duct 4 to the desired temperature, an additional heating element can be installed there. In such cases, the casing may be additionally equipped with a temperature sensor, the readings from which affect the applied voltage to the additional heating element.

To clean the atmospheric air from mechanical impurities and excess moisture in the rear of the duct 4 of the casing install an air filter. It can be located both on the outside and on the inside of the duct. It is advisable that the design and location of the air filter are convenient for quick replacement.

To facilitate maintenance of the duct 4 and the elements installed inside it, the duct 4 itself can be mounted on the housing of the casing using a swivel.

Claims (6)

1. A casing for protection against contamination of outdoor surveillance equipment, comprising a closed case, the front end of which has an optical window that opens into a tube made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the camera’s visibility zone, characterized in that in the lower or side at least one hole is made of a part of said tube, through which the tube communicates with the external environment through an air duct fixed to the bottom or side wall of the casing body, while and a heating element is installed in the duct to create a temperature difference between the ambient air and the air inside the tube. 2. The casing according to claim 1, characterized in that the heating element is a radiator of a video camera. 3. The casing according to claim 1, characterized in that the duct extends along the casing body and has an air inlet at the rear. 4. The casing according to claim 1, characterized in that an air filter is installed in the rear of the duct. 5. The casing according to claim 1, characterized in that the duct is fixed in the lower part of the casing and is connected to the inner cavity of the tube through openings made in the lower part of the tube adjacent to the casing. 6. The casing according to claim 1, characterized in that a temperature sensor is additionally installed inside the duct.

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