RU2790180C1 - Surveillance camera housing - Google Patents

Abstract

FIELD: outdoor video surveillance.

SUBSTANCE: invention relates to equipment for outdoor video surveillance. The effect is achieved in that the casing of the video camera contains a closed body (1) consisting of a cover (2) and a base (3). At the front end of the housing there is a frame (6) and a transparent glass attached to it (7). A pipe (8) is installed on the outer side of the glass. In the lower part of the pipe, two holes (9) are made at an angle β equal to 45 degrees, ensuring the direction of the air flow to the center of the protective glass and to the outer open part of the pipe. Through the holes (9) the pipe communicates with the external environment through the air duct (11). The air duct is fixed on the bottom wall of the housing. A fan (12) and an air flow heater (13) are installed inside the air duct, and internal parallel partitions (14) are installed in front of the heater, rigidly attached alternately to the upper and lower parts of the air duct housing at an angle α equal to 45 degrees. At the end of the rear part of the air duct, a metal mesh (18) is installed in the inlet, and a protective cap (19) is installed outside above the inlet.

EFFECT: improving the efficiency of preventing contamination of the protective glass of the camcorder body.

1 cl, 1 dwg

Description

The invention relates to equipment for outdoor surveillance, and in particular to means for protecting it from adverse external influences (dust, insects, rain, snow, etc.).

A well-known casing of an external surveillance video camera that prevents pollution of the glass of the front window, containing a housing consisting of a base and a cover, a video camera, a heater, a blower, a microprocessor unit are installed inside the housing, a window is made on the first end of the housing and a pipe is installed on the outside of the window, on a filter is installed at the second end of the housing (patent RU No. 2439838, published on 01/10/2012).

The disadvantage of the housing is the rapid clogging of the barrier-type air filter, which leads to an increase in the frequency of maintenance of the housing housing and the internal equipment of the housing to replace or clean the filter, and as a result, to a decrease in the effectiveness of preventing contamination of the protective glass (accumulation of dust, fogging, accumulation of drops of water, snow and icing) due to insufficient air circulation. Also, the disadvantages are the susceptibility of the filter to precipitation and moisture, which also reduces its reliability and durability, the risk of damage with subsequent wear of the fan and the ingress of debris and dirt into the housing housing.

In addition, the disadvantage is that the air flow passes inside the casing and makes it leaky, which is highly undesirable for outdoor equipment. Despite the presence of an air filter in the design of the casing, dust particles and excess moisture will inevitably get inside it, which will lead to their settling on the inner surface of the casing itself, on electronic equipment, circuit boards, the inside of the casing glass and even the optical glass of the camera. This can reduce the transparency of the glass, the performance of the camera, and even damage equipment, not to mention the need for more frequent and expensive maintenance.

The closest technical solution is a housing for an outdoor surveillance video camera, containing a closed housing consisting of a cover and a base, a video camera is installed on the basis of the housing, the front end of the housing has an optical window that opens inside a tube made in the form of a pipe of arbitrary section, the inner walls of which form the boundaries of the zone visibility of the video camera, while the lower or side part of the specified 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 housing housing, while the blowing air is installed inside the air duct an element for creating excess pressure inside the tube, a temperature sensor and a fan. An air filter is installed in the rear part of the air duct (patent RU No. 2573426, published on January 20, 2016).

The disadvantages are:

- low efficiency of atmospheric air purification from mechanical impurities and excess moisture due to rapid clogging of the filter and getting wet, freezing, which reduces the flow of air for blowing, reduces the overhaul period;

- low efficiency of the impact of the air flow coming out of the blower at an angle of 90 degrees to the tube (pipe), which reduces the effectiveness of glass protection and blowing dust and debris out of the tube (pipe).

The technical objectives of the invention are to increase the efficiency of preventing contamination of the protective glass (accumulation of dust, fogging, accumulation of drops of water, snow and icing) by improving the quality of purification of incoming air and its supply, reducing the overhaul period of the casing, as well as expanding the arsenal of technical means for protecting outdoor video cameras observations from adverse external influences.

Technical problems are solved by a casing of an outdoor surveillance video camera, containing a closed casing, consisting of two parts - a cover and a base, a video camera, a microprocessor control unit containing a microprocessor and a power supply connected to it, are installed on the base of the casing, a front casing window is made on the front end of the casing, consisting from a frame and transparent glass attached to it, a pipe is installed on the outer side of the glass, the inner walls of which form the boundaries of the visibility zone of the video camera, while in the lower part of the pipe there are holes through which the pipe communicates with the external environment through an air duct fixed on the lower wall of the housing housing , a fan and an air flow heater are installed inside the duct.

What is new is that in the rear part inside the air duct in front of the heater, internal parallel partitions are installed, rigidly attached in turn to the upper and lower parts of the air duct body at an angle α equal to 45 degrees, a metal mesh is installed at the end of the rear part of the air duct in the inlet, and outside above a protective cap is installed at the inlet, two holes are made in the pipe at an angle β equal to 45 degrees, ensuring the direction of the air flow to the center of the protective glass and to the outer open part of the pipe.

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

The casing of the outdoor surveillance video camera contains a closed housing 1, consisting of two parts - a cover 2 and a base 3, on which a video camera 4, a microprocessor control unit 5 are installed, containing a microprocessor and a power supply unit connected to it (not shown in the figure). At the front end of the housing 1 there is a front window of the casing, consisting of a frame 6 and transparent glass 7 attached to it. A pipe 8 is installed on the outer side of the glass 7, the inner walls of which form the boundaries of the visibility zone of the video camera 4, while in the lower part of the pipe 8 there are two holes 9, made at an angle β equal to 45 degrees, with sockets 10, through which the pipe 8 communicates with the external environment through the air duct 11, fixed on the lower wall of the housing 1 of the casing. A fan 12 and an air flow heater 13 are installed inside the air duct 11.

Internal parallel baffles 14 are installed inside the air duct 11 in the rear part. The internal parallel baffles 14 are rigidly attached alternately to the upper 15 and lower 16 parts of the air duct housing 11 at an angle α equal to 45 degrees (either by spot welding or made by a single design with the upper and lower parts of the housing duct). Partitions 14 are made of metal, have a thickness of at least 2 mm and a length at which between the partition 14 and the opposite side of the duct 11 (from the one to which it is attached) there was space for air passage (at least 5 mm). At the end of the rear part of the air duct in the inlet 17, a metal mesh 18 is installed and fixed, and a protective visor 19 is installed outside the inlet. (not shown in the figure). The metal protective cap 19 is attached to the air duct with 11 screws (not shown in the figure).

Two holes 9 in the pipe 8 are made in such a way that when the air is supplied, the air flow is divided into two parts, the first flow at an angle of 45 degrees is directed directly to the center of the protective glass 7, and the second flow at an angle of 45 degrees to the outer open part of the pipe 8. Flares 10 allow directing air to the glass 7 and the open part of the pipe 8, made of plastic, attached to the inner surface of the pipe 8 with screws (not shown in the figure).

The housing 1 of the casing is made of metal of a round shape or a semicircular section, in which the base is made flat. Pipe 8 is made of metal or plastic of circular cross section. The duct 11 is made of metal and has the shape of a trapezoidal section. All parts are interconnected by hinges and screws (not shown in the figure).

The upper 15 and lower 16 parts of the air duct 11 are connected by screws (not shown in the figure), when cleaning the air duct 11, the lower part 16 is dismantled by unscrewing the screws, which makes it possible to simplify the maintenance process without disassembling the entire casing. The distance between the baffles 14 is 15 mm.

The ingress of heated air directly onto the center of the protective glass 7 makes it possible to prevent its fogging or icing as much as possible, the angle of 45 degrees ensures a uniform supply of air flow to the glass 7.

The ingress of the air flow directly into the center of the outlet of the pipe 8 makes it possible to exclude as much as possible the ingress of dust, debris, insects, dirt and precipitation into the pipe 8 and further onto the glass 7, the angle of 45 degrees allows for a uniform flow of air into the center of the outlet of the pipe 8.

Air from the environment through the grid 18 and the inlet 17 of the rear wall of the duct enters the duct 11, thanks to the fan 12, which creates a pressure difference, and heats up, passing through the heater 13. The flow of heated air, forming a spray cone supplied under high pressure created by the fan 12, prevents the pipe 8 from filling with dirt, snow, frost, moisture, dust and getting them on the transparent glass 7.

When the air flow collides and turns, due to the presence of internal vertical partitions 14, mechanical impurities, dust, insects and small debris are deposited on the lower part of the gravity cleaning unit between the partitions. The execution of partitions 14 at an angle α - 45 degrees allows for the gradual accumulation of dust and small particles in the space between the partitions 14 and the lower part 16 of the duct 11, which eliminates its rapid clogging, and also prevents the circulation of dust and small particles with their entry into the duct 11. The presence of a protective visor 19 above the inlet 17 prevents the ingress of moisture and precipitation into the casing, and the metal mesh 18 prevents large debris and insects from entering the casing.

The air flow at the outlet of the duct is divided into two parts, the first at an angle of 45 degrees was directed directly to the center of the protective glass, and the second at an angle of 45 degrees to the outer open part of the pipe. This allows, unlike the prototype, to increase the efficiency of preventing fogging or icing of the protective glass and preventing dust and debris from entering the glass.

Thus, the proposed design of the protective casing of the outdoor surveillance video camera provides an increase in the quality of cleaning of incoming air and its supply, an increase in the overhaul period of the casing between maintenance of the casing in comparison with the prototype by at least 2 times, which increases the efficiency of preventing contamination of the protective glass of the housing (dust accumulation , fogging, accumulation of water droplets, snow, insects and icing). The arsenal of technical means of protecting outdoor surveillance cameras from adverse external influences is also expanding.

Claims (1)

The housing of the outdoor surveillance video camera, containing a closed housing, consisting of two parts - a cover and a base, a video camera, a microprocessor control unit containing a microprocessor and a power supply connected to it, are installed on the base of the housing, a front window of the housing is made on the front end of the housing, consisting of a frame and transparent glass attached to it, a pipe is installed on the outer side of the glass, the inner walls of which form the boundaries of the visibility zone of the video camera, while in the lower part of the pipe there are holes through which the pipe communicates with the external environment through an air duct fixed on the bottom wall of the casing inside the air duct a fan and an air flow heater are installed, characterized in that in the rear part inside the air duct, in front of the heater, internal parallel partitions are installed, rigidly attached alternately to the upper and lower parts of the air duct body at an angle α equal to 45 degrees, at the end of the rear part of the air duct into the inlet a metal mesh is installed in the hole, and a protective cap is installed outside above the inlet, two holes are made in the pipe at an angle β equal to 45 degrees, ensuring the direction of the air flow to the center of the protective glass and to the outer open part of the pipe.

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