KR101733712B1 - Closed Circuit Television Using Thermoelectric Element - Google Patents

Abstract

The present invention relates to a closed circuit television using a thermoelectric element, which can cool a CCTV camera easily and efficiently, and prevent dust or foreign materials from adhering to a transparent window in front of a camera lens. The present invention provides an industrial CCTV including a base (10) and a camera body (20) provided on the base (10) and having a camera module (21) therein. The industrial CCTV further includes a thermoelectric element cooling unit (30) for cooling the water by the thermoelectric element and supplying the water to the camera body (20).

Description

Closed Circuit Television Using Thermoelectric Element (CCTV)

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an industrial CCTV installed in a worksite such as a steelworks or a cogeneration power plant where a lot of dust is generated and is high in temperature. More specifically, Cooling water is supplied to the camera main body by cooling the water in the thermoelectric-element cooling unit so that a piping line for supplying the cooling water from the cooling unit to the camera body is not required and air is blown from the air purge unit, The present invention relates to an industrial CCTV using a thermoelectric element capable of preventing the adhesion of the thermoelectric element.

Generally, a closed circuit television (CCTV) system refers to a closed circuit television system in which transmission and reception of images are connected by wire or wireless and can not be received arbitrarily except for a reception target.

The CCTV system (hereinafter, simply referred to as 'CCTV') includes a camera for capturing a specific place and a monitor for implementing an image photographed by the camera, and is used for industrial, educational, medical, It is used for various purposes such as traffic control and disaster prevention.

In the above steelworks or cogeneration plant, CCTV is installed close to a furnace or a combustion furnace to observe progress of the work.

Accordingly, in the case of the industrial CCTV installed in the steelworks or the cogeneration plant, it is necessary to supply the cooling water or the cooling air to prevent the camera from being overheated by the high temperature.

As a method of lowering the temperature of the camera module, there is a method of supplying cooling water or cooling air to the camera module.

However, the system using the cooling water or the cooling air requires a separate cooling apparatus for cooling water or air.

In addition, CCTV cameras installed at steelworks or cogeneration plants are usually installed at high positions because they need to observe the working conditions of blast furnaces or combustion furnaces.

Accordingly, a separate piping line with a high position in which a CCTV camera is installed from a cooling device installed on the ground should be installed.

As a result, not only the construction cost is increased but also the maintenance cost of the piping line is increased.

In addition, in the steelworks or the cogeneration plant, much dust or foreign matter is generated due to the nature of the operation. When such dust or foreign matter adheres to the transparent window of the camera lens, the image quality is deteriorated.

Accordingly, it is inconvenient to periodically remove dust or foreign substances attached to the transparent window of the CCTV camera installed at a high position.

Particularly, dust or foreign matter generated during the work process is combined with moisture in the air and fixed to the transparent window of the camera lens. In this case, it becomes more difficult to remove dust and foreign matter.

Also, in the conventional CCTV, a step for fixing the transparent window is formed, and dust or foreign matter is accumulated on the step.

As a result of searching the prior art related to the present invention, a large number of patent documents have been searched and some of them will be described as follows.

Patent Document 1 discloses a CCTV installation box provided with a cleaning device. A CCTV camera is installed inside, an upper portion is opened, and an interior is formed in an empty housing, a front window is formed on the front side, A cover coupled to the upper plate, a wiper disposed in a front side of the cover, the wiper moving in the left and right direction to clean the rear end of the cover by contacting the rear end thereof, and a wiper A driving pulley engaged with the driving motor, a driven pulley connected to the driving pulley through a belt, and a driven pulley connected to the driving pulley and the driven pulley, wherein the driving pulley and the driven pulley are disposed, And a fixing bracket provided on the belt and coupled with the upper end of the link, It includes a luer binary wiper drive unit, and a cleaning liquid ejecting portion and a link locking means for securing the link for spraying wash liquid on the transparent plate.

Patent Document 2 relates to a marine CCTV having a wiper capable of removing an attached base by using a wiper even if a base of seawater adheres to a front window of a case. A case having an internal space for accommodating the camera module and having a transparent window at the front thereof; A sensor for detecting presence or absence of a foreign substance in the transparent window; A wiper rotatably provided on a front side of the case and adapted to receive power from a driving motor to remove foreign substances present in the transparent window; And a spray nozzle for spraying water, which is supplied through a storage tank and a pump provided in the internal space, onto the entire surface of the transparent window.

Patent Document 3 relates to a foreign substance removing device for a front surface of a camera, which comprises a CCTV camera, a protective film made of a transparent material on the front surface of the CCTV camera, A wiper motor coupled to the outside of the CCTV camera for driving the wiper and a wiper motor for driving the wiper module according to the amount of foreign matter sensed by the sensor, A wiper module including a control unit for driving the wiper module; And a wiper that moves on the protection film by the wiper module to remove foreign matter.

KR 10-2015-0050664 A KR 10-2012-0112913 A KR 10-2009-0019434 A

SUMMARY OF THE INVENTION It is an object of the present invention to provide a CCTV camera installed in a high-temperature working environment in which dust is generated in a large amount easily and efficiently.

Another object of the present invention is to eliminate the necessity of a separate cooling device for cooling the CCTV camera with water and to eliminate the necessity of providing a separate piping line for supplying the cooling water from the cooling device to the camera body.

It is still another object of the present invention to prevent the temperature of the camera module from becoming high due to a high temperature working environment as much as possible.

It is still another object of the present invention to provide an air curtain in a transparent window at the front of a camera lens to prevent dust or foreign matter from adhering thereto.

It is a further object of the present invention to provide a camera module in which a camera module is cooled by replacing or replacing the inner pipe by supplying cooling air in place of cooling water, .

According to an aspect of the present invention, there is provided an industrial CCTV including a base, and a camera body provided on the base and having a camera module therein, the industrial CCTV comprising: And a thermoelectric element cooling unit for cooling the water and supplying it to the camera body.

The thermoelectric-element cooling unit may include a cooling-water supply pipe for supplying cooling water to the camera body, and a cooling-water recovery pipe for recovering cooling water from the camera module.

A cooling water supply pipe for supplying the cooling water supplied from the thermoelectric element cooling unit to the camera body and a cooling water discharge pipe for discharging the cooling water from the camera body are provided on the rear surface of the camera body.

And a cooling water replenishing port for replenishing the cooling water is further provided on one side of the upper portion of the camera body.

The camera body includes a cylindrical outer housing, an inner pipe spaced apart from the outer housing by a predetermined distance, a camera module provided inside the inner pipe, and a camera cover provided on the upper portion of the outer housing, And a control unit.

And the cooling water is circulated through the space formed between the outer housing and the inner pipe.

Further, a heat insulating material is further provided on the inner surface of the inner pipe.

Further, the base may further include an angle adjusting unit for adjusting the camera body in the forward and backward directions.

In addition, the camera body is provided with a plurality of rollers for rotating the camera body.

In addition, the inner pipe is detachably attached to the camera body, the inner pipe is removed or replaced with another pipe, and then the camera module is cooled by cooling air instead of cooling water.

The apparatus further includes a camera cover for covering the upper portion of the camera body, and an air purge portion provided at an upper portion of the camera cover to supply air to a transparent window provided on a front surface of the camera lens.

The air purge portion may include an air introduction pipe for introducing air, an air blowing fan for blowing the air introduced through the air introduction pipe to the air ejection port side, and an air ejection port for ejecting air toward the transparent window .

And a heat reflecting coating layer is further formed on an outer surface of the transparent window.

And an inclined portion is formed on the outer periphery of the transparent window so that dust or foreign matter easily flows out.

And a sensor for detecting presence or absence of dust or foreign matter on the transparent window.

The camera body may further include a temperature sensor for sensing the temperature of the camera module.

Industrial Applicability According to the present invention, an industrial CCTV camera installed in a high-temperature working environment in which a large amount of dust is generated can be easily and efficiently cooled.

Further, there is no need to provide a separate cooling device for cooling the CCTV camera with the cooling water, and there is no need to provide a piping line for supplying the cooling water from the cooling device to the camera body, thereby reducing the installation cost.

Also, the temperature of the camera module is prevented from rising due to the surrounding environment.

In addition, the air curtain is formed in front of the camera lens to prevent dust or foreign matter from adhering to the camera lens, and particulate matter or foreign matter can be prevented from being bonded to moisture in front of the camera lens.

This has the effect of preventing the deterioration of the image quality of the image due to the attachment of dust or foreign matter in a working environment in which a lot of dust is generated.

In addition, the inner pipe installed in the camera main body is configured to be detachable so that the camera module can be cooled by supplying cooling air instead of cooling water by removing or replacing the inner pipe.

Thereby, the mold cost of the camera body can be reduced, and the manufacturing cost of the camera body can be reduced.

Further, the angle of view of the CCTV camera can be easily controlled by the angle adjuster provided on the base and the rollers provided on the camera body.

1 is a perspective view of an industrial CCTV according to the present invention;
2 is a plan view of an industrial CCTV in accordance with the present invention;
3 is a front view of an industrial CCTV according to the present invention;
4 is a side view of an industrial CCTV in accordance with the present invention;
5 is a side cross-sectional view of an industrial CCTV in accordance with the present invention;

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 to 4, the industrial CCTV according to the present invention includes a base 10, a camera body 20 provided on the base 10 and having a camera module 21 therein, The CCTV further includes a thermoelectric element cooling unit 30 for cooling the water by the thermoelectric element and supplying the coolant to the camera body 20 on one side of the base 10. [

The thermoelectric-element cooling unit 30 cools water by using a Peltier effect of a thermoelectric element.

Peltier effect refers to the effect of connecting two metal ends having different properties and then applying current to the metal to cause heat to be generated at one of the junctions of the metal while the other is cooled by being deprived of heat. Or air can be cooled.

At this time, if semiconductor elements having different conductivity types are used in place of the above-mentioned metals, the endothermic and exothermic effects can be increased.

The thermoelectric element can control endothermic and exothermic effects according to the amount of current, and is applied to a refrigerator or a thermostatic chamber having a small capacity.

The technique of cooling water or air by the thermoelectric element is well known in the art, so a detailed description thereof will be omitted.

As shown in FIGS. 1 and 2, the thermoelectric-element cooling unit 30 includes a cooling water supply pipe 30a for supplying cooling water to the camera body 20, And a cooling water recovery pipe 30b.

A cooling water supply pipe 27a for supplying the cooling water supplied from the thermoelectric element cooling unit 30 to the camera body 20 is provided on the rear surface of the camera body 20, A cooling water discharge pipe 27b is provided.

Although not shown in the drawing, a pump for circulating cooling water is provided inside the thermoelectric-element cooling unit 30. [

With the above-described structure, the cooling water cooled by the thermoelectric-element cooling unit 30 can be supplied to the camera body 20, cooled, and then circulated to the thermoelectric-element cooling unit 30 again.

1, a cooling water replenishing port 26 for replenishing the cooling water is further provided on one side of the upper portion of the camera body 20. As shown in Fig.

5, the camera body 20 includes a cylindrical outer housing 23, an inner pipe 22 spaced apart from the outer housing 23 to form a space S, A camera module 21 provided inside the inner pipe 22 and a camera cover 25 provided at an upper portion of the outer housing 23.

5, reference numeral 29 denotes a socket 29 for supplying power to the camera module 21, 27c denotes a case in which the camera module 21 is cooled by air (which will be described later) Fig.

The cooling water cooled by the thermoelectric element cooling unit 30 flows through the space S formed between the outer housing 23 and the inner pipe 22, Can be cooled.

Further, as shown in the enlarged view of FIG. 5, it is preferable that a heat insulating material 28 is further provided on the inner surface of the inner pipe 22. The temperature of the camera module 21 can be prevented from rising by the heat insulating material 28 as much as possible.

As shown in FIG. 4, the base 10 further includes an angle adjusting unit 12 for adjusting the camera body 20 in the forward and backward directions.

The angle adjusting unit 12 may include a slot on the circular arc so that the camera body 20 can be moved in the forward and backward directions (right and left directions in FIG. 4).

As shown in FIG. 3, the camera body 20 is provided with a plurality of rollers 20a capable of rotating the camera body 20.

The viewing angle of the camera body 20 can be freely adjusted by the angle adjusting unit 12 and the roller 20a.

The inner pipe 22 is detachably attached to the camera body 20.

With the above structure, after the inner pipe 22 is removed or replaced with another pipe, the camera module 21 may be cooled by cooling air instead of cooling water.

Accordingly, only the inner pipe 22 is replaced without changing the structure of the camera body 20, and the cooling method using cooling water can be changed to the cooling method using cooling air.

In other words, since the same camera body can be used as the cooling water supply system and the cooling air supply system, the mold cost and manufacturing cost of the camera body can be reduced.

The industrial CCTV of the present invention includes a camera cover 25 for covering the upper portion of the camera body 20 and a transparent window provided on the front side of the camera lens 21a, 21b. ≪ / RTI >

As shown in Fig. 5, the air purge portion 24 includes an air introduction pipe 24a for introducing air, an air blowing fan 24b for blowing the air introduced through the air introduction pipe 24a to the air discharge port side A fan 24c, and an air outlet 24b for injecting air toward the transparent window 21b.

An opening 25a is formed in the front portion of the camera lid 25 so as to allow the air outlet 24b of the air purge portion 24 to pass therethrough, as shown in FIG.

By forming the air curtain by the air purge unit 24 described above, it is possible to prevent dust or foreign matter from adhering to the transparent window 21b provided in front of the camera lens 21a.

Further, a heat reflecting coating layer is formed on the outer surface of the transparent window 21b, so that external heat can be minimally transferred to the inside of the camera module 21.

5, an inclined portion 21c is formed on the outer periphery of the transparent window 21b to allow dust and foreign matter to flow easily.

There is a problem in that a step is formed on the outer periphery of a normal transparent window to fix it, and dust or foreign matter accumulates on the step.

However, if the inclined portion 21c is formed on the outer periphery of the transparent window 21b as in the present invention, the above phenomenon can be prevented.

Further, a detection sensor (not shown) for detecting whether dust or foreign matter is attached to the transparent window 21b may be provided so that the air purge unit 24 is automatically operated when the amount of the foreign substance reaches a predetermined amount or more.

The camera module 21 may further include a temperature sensor (not shown) to control the thermoelectric element cooling unit 30 to be automatically operated when the temperature of the camera module 21 becomes equal to or higher than a predetermined temperature.

In addition, the control of the thermoelectric-element cooling unit 30 and the air purge unit 20 can be performed individually by providing a control panel under the CCTV, or can control each CCTV in a control room equipped with a CCTV monitor .

Hereinafter, the operation and effect of the industrial CCTV according to the present invention will be described.

5, the space S between the outer housing 23 and the inner pipe 22 is filled with water through a coolant replenishing port 26 provided in the camera body 20. [

Subsequently, when power is applied to the thermoelectric-element cooling section 30 to operate the water, the water is cooled in the thermoelectric-element cooling section 30.

2, the cooling water is supplied from the cooling water supply pipe 30a of the thermoelectric element cooling unit 30 to the camera body 20 (see FIG. 2) by operating a pump (not shown) provided in the thermoelectric element cooling unit 30, ) Cooling water supply pipe 27a.

The cooling water introduced into the cooling water supply pipe 27a of the camera body 20 cools the camera module 21 while circulating along the space S.

The cooling water is discharged from the camera body 20 through the cooling water discharge pipe 27b and then recovered to the thermoelectric element cooling unit 30 through the cooling water return pipe 30b.

The air blowing fan 24c provided in the air purge section 24 is operated to introduce air through the air introducing pipe 24a and spray it onto the transparent window 21b to form an air curtain, Thereby preventing foreign matter from adhering.

Industrial CCTV installed in a steel plant or a cogeneration plant is exposed to a high temperature working environment, so it is necessary to cool the camera module.

However, according to the cooling method using the conventional cooling device, a piping line must be provided from a cooling device for cooling water or air to a camera body installed at a high position.

That is, the CCTV camera is usually installed at a high position to observe the progress of the operation, and a cooling device for cooling water or air is provided on the ground.

Accordingly, a piping line connecting the cooling device and the camera body must be installed. Therefore, there is a problem in that a cost associated with installation of a piping line is added, and maintenance work is inconvenient.

However, according to the present invention, since the structure is such that the water is cooled in the thermoelectric-element cooler formed integrally with the camera body on the base and then supplied to the camera body, the structure is very simple.

In addition, it is not necessary to install a pipeline from the cooling device installed on the ground to the camera body installed at a high position.

Further, by forming air curtains by spraying air onto the transparent window by the air purge portion, it is possible to prevent dust or foreign matter from adhering to the transparent window.

Further, since the heat insulating material is provided inside the inner pipe of the camera body and the heat reflecting coating layer is formed on the transparent window, the temperature rise inside the camera module can be suppressed as much as possible.

Further, the position of the camera body can be easily adjusted by the angle adjusting unit provided on the base and the rollers provided on the camera body.

In addition, since the inner pipe of the camera body is detachably assembled, if the inner pipe is removed or replaced with another pipe, the camera module can be cooled using cooling air instead of cooling water.

That is, without changing the structure of the camera main body, the cooling water using method and the cool air using method can be used in a compatible manner.

Accordingly, the mold cost and the manufacturing cost of the camera main body can be reduced.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it is to be understood that the invention is not limited to the disclosed exemplary embodiments. It will be understood by those skilled in the art that many changes and modifications may be made without departing from the scope of the invention as defined in the appended claims.

And all such modifications and changes as fall within the scope of the present invention are therefore to be regarded as being within the scope of the present invention.

10: Base 12: Angle adjusting part
20: Camera body 20a: Roller
21: Camera module 21a: Camera lens (Lens)
21b: transparent window 22: inner pipe (pipe)
23: outer housing 24: air purge part
24a: air inlet pipe 24b: air outlet port
24c: blower fan 25: camera cover
26: Cooling water replenishment port 27a: Cooling water supply pipe
27b: Cooling water discharge pipe 27c: Air outlet
28: Insulation material 29: Socket
30: thermoelectric element cooling section 30a: cooling water supply pipe
30b: Cooling water recovery pipe
S: space portion

Claims (16)

A camera body 20 provided at an upper portion of the base 10 and having a camera module 21 therein; a cooling unit 20 for cooling water by a thermoelectric element on one side of the base 10; And a thermoelectric element cooling unit (30) for supplying the camera body (20)
The thermoelectric-element cooling section (30)
A cooling water supply pipe 30a for supplying cooling water to the camera body 20 and a cooling water recovery pipe 30b for recovering cooling water from the camera module 21,
A cooling water supply pipe 27a for supplying the cooling water supplied from the thermoelectric element cooling unit 30 to the camera body 20 is provided on the rear surface of the camera body 20, And a cooling water discharge pipe (27b)
The camera body (20)
A cylindrical outer housing 23,
An inner pipe 22 spaced apart from the outer housing 23 by a predetermined distance to form a space S,
A camera module 21 provided inside the inner pipe 22,
And a camera cover (25) provided at an upper portion of the outer housing (23)
The inner pipe 22 is detachably attached to the camera body 20 so that the camera module 21 can be cooled by cooling air instead of cooling water after the inner pipe is removed or replaced with another pipe ,
A camera lid 25 for covering the upper portion of the camera body 20,
Further comprising an air purge portion (24) provided on an upper portion of the camera lid (25) for supplying air to a transparent window (21b) provided on a front surface of the camera lens (21a)
The air purge section (24)
An air introduction pipe 24a for introducing air,
A blowing fan 24c for blowing the air introduced through the air introduction pipe 24a toward the air discharge port side,
And an air outlet 24b for injecting air toward the transparent window 21b,
And a thermally reflective coating layer is further formed on the outer surface of the transparent window (21b). delete delete The method according to claim 1,
And a cooling water replenishing port (26) for replenishing cooling water is further provided on an upper side of the camera body (20). delete The method according to claim 1,
Wherein the cooling water is circulated through the space (S) formed between the outer housing (23) and the inner pipe (22). The method according to claim 1,
And a heat insulating material (28) is further provided on the inner surface of the inner pipe (22). The method according to claim 1,
Further comprising an angle adjusting unit (12) for adjusting the camera body (20) in the fore and aft direction to the base (10). The method according to claim 1,
Wherein the camera body (20) is provided with a plurality of rollers (20a) capable of rotating the camera body (20). delete delete delete delete The method according to claim 1,
And an inclined portion (21c) is formed on the outer circumference of the transparent window (21b) so that dust or foreign matter easily flows out. The method according to claim 1,
Wherein the transparent window (21b) is further provided with a detection sensor for detecting whether dust or foreign matter is attached to the transparent window (21b). The method according to claim 1,
Wherein the camera body (20) further comprises a temperature sensor for sensing the temperature of the camera module (21).

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