Monitoring camera

Abstract

The invention relates to the technical field of communication, in particular to a monitoring camera. Hot air in the monitoring camera can be always blown towards window glass over against a core window, so that the window glass over against the core window is prevented from fogging, or dissipation of fog on the window glass over against the core window can be accelerated. The monitoring camera provided by the embodiment of the invention comprises a core assembly, the window glass, a first air guide part, a heater and a first fan, wherein the first air guide part is fixedly arranged on the periphery of the core assembly; the first air guide part is provided with a first air inlet; the first air guide part is provided with a first air outlet in a position over against the core window; an air outlet side of the first fan faces a coverage area of the first air inlet during rotation of the first air guide part; the heater is used for heating air current on the air outlet side of the first fan; and the first air guide part is used for rotating driven by the core assembly, and guiding heated air current from the first air inlet to the first air outlet.

Description

technical field [0001] The invention relates to the technical field of communications, in particular to a monitoring camera. Background technique [0002] There are various types of outdoor video surveillance equipment, such as barrel cameras, bolt cameras, dome cameras, dome cameras, etc. All kinds of video surveillance equipment include movement components and protective covers, which are used to protect movement components from damage. The bottom of the protective cover is usually a window glass, and the lens in the movement component captures the external image through the window glass to achieve the purpose of monitoring; during the operation of the video surveillance equipment, as the climate changes (for example: rain, snow) As the air humidity increases, the humidity inside the protective cover also increases. Since the core components of the video surveillance equipment will generate a certain amount of heat during operation, when the temperature drops, the inner wa...

AI Technical Summary

Problems solved by technology

[0002] There are various types of outdoor video surveillance equipment, such as barrel cameras, bolt cameras, dome cameras, dome cameras, etc. All kinds of video surveillance equipment include movement components and protective covers, which are used to protect movement components from damage. The bottom of the protective cover is usually a window glass, and the lens in the movement component captures the external image through the window glass to achieve the purpose of monitoring; during the operation of the video surveillance equipment, as the climate changes (for example: rain, snow) As the air humidity increases, the humidity inside the protective cover also increases. Since the core components of the video surveillance equipment will generate a certain amount of heat during operation, when the temperature drops, the inner wall of the window glass will be damaged due to the large temperature difference between inside and outside. Large and form water mist, so that the lens of the movement components cannot obtain a clear image due to water mist or frost on the window glass, which will affect the effect of the window glass to capture images, thus reducing the monitoring effect of video surveillance equipment

[0003] In the prior art, the following methods are usually used to defog the video monitoring equipment: The first method is: plating conductive indium tin oxide on the surface of the window glass or adding a heating wire on the window glass, through the self-heating of the window glass To reduce the temperature difference between the inside and outside of the window glass, thereby reducing the fogging phenomenon; because the window glass is usually made of glass or plastic with poor thermal conductivity, when heated by a heating wire, it will cause uneven temperature distribution and make the window glass easy to break , plating conductive material on the window glass will affect the transparency of the transparent dome cover, thereby affecting the shooting effect

The second method is: add a semiconductor refrigeration module inside the protective cover, and condense the moisture in the air through cooling to discharge the outside of the transparent dome cover, thereby reducing the air humidity inside the window glass and preventing fogging; the technical cost of this method is relatively high , requires additional current for control, and needs to design drainage holes, which is not conducive to the waterproof protection of the camera

The third method is to add a fan and a heater inside the protective cover to enhance the flow of hot air for demisting; specifically, see figure 1 , the video camera includes a protective cover 7, a movement assembly 1, the window glass 2 is located below the protective cover 7, the movement assembly 1 is arranged close to the window glass 2, and is arranged on the inner wall of the protective cover 7 There is a fan 42 and a heater 41. The internal air flow of the protective cover 7 flows along the gap between the core assembly 1 and the window glass 2 when the fan 42 is working, and the air flow exchanges heat with the heater 41 to form hot air to Reduce the temperature difference between the inside and outside of the window glass to achieve the purpose of anti-fog and defog; The phenomenon that the temperature is low, therefore, when the lens in the movement assembly 1 faces the area with a lower temperature, the phenomenon that the camera cannot clearly obtain the image of the monitoring area through the window glass 2 will still occur

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