RU2799487C1 - Surveillance camera protective cover - Google Patents

Abstract

FIELD: surveillance equipment.

SUBSTANCE: invention relates to means of protecting an outdoor surveillance video camera from adverse external influences. The technical result is to improve the quality of the casing and increase the duration of the casing by improving the quality of cleaning the incoming air, preventing moisture and precipitation from entering the casing, directed blowing of the protective glass, which prevents glass contamination and maintaining the required temperature and humidity inside the casing. The protective cover contains a closed body consisting of a cover and a base, with a front window consisting of a frame with through holes and transparent glass, a pipe is installed on the outer side of the glass, a video camera, a fan, an air flow heater, a microprocessor control unit and a power supply, an air temperature sensor and an air humidity sensor connected to it are installed inside the body. A gravitational air purification unit with internal vertical partitions on the upper and lower parts is fixed to the rear end of the case at the fan intake, with an inlet having a protective visor and a metal mesh, an outlet opposite to the fan. Above the upper opening in the frame of the front window of the housing, a guide visor is made, which ensures the direction of the air flow onto the glass.

EFFECT: improved quality of the casing and increase the duration of the casing by improving the quality of cleaning the incoming air, preventing moisture and precipitation from entering the casing, directed blowing of the protective glass, which prevents glass contamination and maintaining the required temperature and humidity inside the casing.

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Description

The invention relates to equipment for outdoor surveillance, and in particular to means for its protection from adverse external influences.

A case for a television camera is known, containing a package comprising a lower flat part and an upper part with a front window, a feeder, a heat transfer fan, electrical connections (patent RU No. 2280959, publ. 20.09.2003).

The disadvantage of this case is the low efficiency of protecting the front window of the camcorder housing from dirt.

A protective casing of an outdoor surveillance video camera is known, containing a closed housing, the front end of which has an optical window opening inside a tube made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the visibility zone of the video camera, while the lower or side part of the said tube is provided with at least one hole through which the rear part of the tube closest to the body communicates with the external environment through an air duct fixed on the bottom or side wall of the casing body, while an air-forcing element is installed inside the air duct to create excess pressure inside the tube (patent RU No. 2573426, publ. 20.01 .2016).

A protective casing of an outdoor surveillance video camera is known, containing a closed housing, the front end of which has an optical window opening inside a tube made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the visibility zone of the video camera, at least one is made in the lower or side part of the specified tube an opening through which the tube communicates with the external environment through an air duct fixed on the bottom or side wall of the casing body, while a heating element is installed inside the air duct to create a temperature difference between the ambient air and the air inside the tube (patent RU No. 146715, publ. 20.10.2014 ). The blowing of the protective glass is implemented outside the case from below or from the side.

The disadvantages of the known casings are the rapid clogging of the filter and insufficient air flow for blowing, as well as an increase in size due to the presence of an external blower.

The closest technical solution is a protective housing for an outdoor surveillance video camera, containing a closed housing consisting of a cover and a base, with a front window consisting of a frame with through holes and transparent glass, a pipe is installed on the outside of the glass, a video camera, a fan, an air flow heater, a microprocessor control unit and a power supply connected to it, an air temperature sensor and an air humidity sensor inside this housing (patent RU No. 2439838, publ. 10.01.2012). The casing is equipped with an air cleaning filter installed at the inlet of the blower, designed to clean the incoming air from the external environment. The casing prevents the glass of the front window of the casing of the outdoor surveillance camera from becoming dirty.

The disadvantage of the protective cover is low efficiency due to the rapid clogging of the barrier-type air filter (due to the accumulation of dust, debris, fluff, insects), which leads to an increase in the frequency of maintenance of the cover to replace or clean the filter, to a decrease in the effectiveness of preventing contamination of the protective glass (accumulation dust, fogging, accumulation of water droplets, snow and ice) and maintaining the required temperature and humidity inside the housing due to insufficient air circulation. Also, the disadvantages are the susceptibility of the filter to precipitation and moisture, which reduces its reliability and durability, the risk of damage with subsequent wear of the fan and the ingress of debris and dirt into the casing. Also, because the airflow is not directed directly at the glass, it causes the glass to fog up and ice up, which degrades the image quality of the camera.

The technical objectives of the invention are to improve the quality of the casing and increase the duration of the casing by improving the quality of cleaning the incoming air, preventing the ingress of moisture and precipitation into the casing, as well as directed blowing of the protective glass, preventing contamination of the protective glass (accumulation of dust, fogging, accumulation of water drops). , snow and icing) and maintaining the required temperature and humidity inside the casing.

Technical problems are solved by a protective casing of an outdoor surveillance video camera, containing a closed housing consisting of a cover and a base, with a front window consisting of a frame with through holes and transparent glass, a pipe is installed on the outside of the glass, a video camera, a fan, and a flow heater are installed inside the closed housing air, a microprocessor control unit and a power supply unit connected to it, an air temperature sensor and an air humidity sensor inside this housing.

What is new is that a gravitational air purification unit with internal vertical partitions on the upper and lower parts is fixed to the rear end of the closed case at the fan intake, with an inlet having a protective visor and a metal mesh, an outlet opposite the fan, and above the upper hole in the frame the front window of the closed body is made with a guide visor, which ensures the direction of the air flow on the glass.

In FIG. 1 shows a diagram of the protective casing of an outdoor surveillance video camera.

The protective cover of the outdoor surveillance video camera contains a closed housing 1, consisting of two parts - a cover 2 and a base 3. A video camera 4, a fan 5, an air flow heater 6, a microprocessor control unit 7 containing a microprocessor and connected to it are installed on the base inside the housing 1 power supply, air temperature sensor and air humidity sensor (not shown in the diagram). In the front end of the housing 1, the front window of the casing is made, consisting of a frame 8 and transparent glass 9 attached to it. A pipe 10 is installed on the outer side of the glass 9, the inner walls of which form the boundaries of the visibility zone of the video camera 4. In the frame 8 of the window in the front end of the closed housing 1, several holes 11 are made for the passage of air from the housing 1 into the pipe 10.

In the rear part of the casing at the intake of the fan 5, a gravity air purification unit 12 is installed with internal vertical partitions 13 fixed alternately on the upper 14 and lower part 15 of the surface of the gravity air purification unit 12, with an inlet 16 having a protective visor 17 and a metal mesh 18 , as well as the outlet 19 opposite the fan 5. The block 12 has the shape of a parallelepiped, the height of the partitions 13 is not less than 2/3 of the height of the block 12, and the distance between the partitions is 20 mm. Block 12 is attached to body 1 with screws (not shown in the diagram). Grid 18 is placed and fixed on the inlet of block 12 and is made of metal wire with a cell of 1 mm. The visor 17 can be made of plastic or metal; it is attached to the gravitational air purification unit 12 with screws (not shown in the diagram). The width of the visor 17 is equal to the width of the block 12, the length is selected taking into account the overlap of the inlet 16 at least 10 mm.

The upper opening 20 in the frame 8 of the window in the front end of the closed housing 1 has a guide visor 21 for directing the air flow onto the glass 9. The visor 21 is made of plastic, attached to the pipe 10 with a screw (not shown in the diagram). The width of the visor 21 is equal to the width of the upper hole 20, the length is 10 mm.

The fan 5 and the heater 6 can operate both in a constant mode during the operation of the video camera 4, and periodically to maintain the temperature and humidity inside the housing 1 within acceptable values.

The air from the environment through the gravity cleaning unit 12 enters the fan 5, then heats up, passing through the heater 6. The heated air through the holes 11 in the frame 8 is fed into the pipe 10. The flow of heated air supplied under high pressure generated by the fan 5 prevents filling pipes 10 with dirt, snow, frost, moisture, dust and their contact with transparent glass 9.

When the air flow is turned due to the presence of internal vertical partitions 13, mechanical impurities, dust and small debris are deposited on the lower part 15 of the gravity cleaning unit 12 between the internal vertical partitions 13. The presence of a protective visor 17 above the inlet 16 prevents moisture and precipitation from entering inside block gravitational air purification 12 and the casing 1, and the metal mesh 18 prevents large debris and insects from entering the casing. The use of the gravitational method of air purification from suspended mechanical impurities and dust makes it possible to increase the efficiency of the operational properties of the protective casing by increasing the access and circulation of clean air, increasing at least 2 times the period between technological maintenance of the casing in comparison with the prototype, in which they were replaced or cleaned filter, heater, fan, cleaning the inner surface of the casing.

The upper opening 20 in the frame 8 of the window in the front end of the closed housing 1 has a guide cap 21 for directing the air flow directly onto the glass 9, which provides more effective protection of the glass from dirt compared to the prototype, especially when fogging and icing.

Thus, the protective casing of the outdoor surveillance video camera provides an increase in the quality of operation of the casing and an increase in the duration of the period of uninterrupted operation of the casing and outdoor surveillance video camera by improving the quality of cleaning the incoming air, preventing moisture and precipitation from entering the casing, as well as directed blowing of the protective glass, which prevents contamination of the protective glass (accumulation of dust, fogging, accumulation of drops of water, snow and icing) and maintaining the required temperature and humidity inside the casing.

Claims (1)

Protective casing of an outdoor surveillance video camera, containing a closed housing consisting of a cover and a base, with a front window consisting of a frame with through holes and transparent glass, a pipe is installed on the outer side of the glass, a video camera, a fan, an air flow heater, a microprocessor are installed inside the closed housing a control unit and a power supply connected to it, an air temperature sensor and an air humidity sensor inside this housing, characterized in that a gravity air purification unit with internal vertical partitions on the upper and lower parts, with an inlet is fixed to the rear end of the closed housing at the fan intake , having a protective visor and a metal mesh, with an outlet opening opposite the fan, and above the upper opening in the frame of the front window of the closed case, a guiding visor is made to direct the air flow onto the glass.

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