JP2019012109A - Camera device with soil removal function - Google Patents

Abstract

To provide a camera device which can clean an imaging window effectively by using a discharge of air, and can prevent generation of twist or tangle of signal transmission cord in drainage pipes effectively.SOLUTION: A camera device comprises: a water proof capsule 12 having an imaging window 11; a camera body 13 contained in the water proof capsule and acquiring images through the imaging window; an air hose 25 connected to the water proof capsule and sending air into the water proof capsule; an air discharge nozzle 18 which is communicated to inside of the water proof capsule and can discharge air in the water proof capsule toward the front surface of the imaging window; and a signal transmission cord 26 transmitting image signal captured by the camera body. The signal transmission cord is contained in the air hose along the long direction of the air hose.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a camera device having a function of removing dirt, particularly including moisture, which can observe a state in a drain pipe of an apartment house, for example.

  In recent years, from the viewpoint of effective use of land, high-rise apartment buildings have been constructed in urban areas and their suburbs. Domestic wastewater (sewage) discharged from this building-type apartment house is discharged from an exclusive drain pipe installed in each individual house to an external horizontal pipe through a common vertical pipe installed inside the building. The As a result, a good living environment is maintained.

  By the way, since this domestic wastewater (sewage) contains a large amount of residue, fats and oils, etc., not only the above-mentioned exclusive drainage pipe but also solid matter on the pipe wall of the common drainage pipe (the vertical pipe and the horizontal pipe) May adhere and block the drainage pipe after a considerable period of time. Moreover, a bad odor is emitted from this solid substance, and the living environment may be deteriorated. In order to prevent such deterioration of the living environment and maintain a favorable living environment, it is necessary to clean the dedicated drain pipe and the common drain pipe at regular intervals.

Conventionally, a high-pressure water jet cleaning method (hereinafter referred to as a high-pressure cleaning method) has been adopted as one means for cleaning (removing) the solid matter adhering to the drain pipe. In this high-pressure washing method, high-pressure water is sprayed from a spray nozzle attached to the tip of a hose toward a solid substance adhering to the drain pipe, and the solid substance is peeled off from the pipe wall and removed.
The present applicant has proposed a water pipe cleaning method capable of monitoring the state of cleaning in the pipe by inserting a small waterproof camera immediately after the injection nozzle when performing the above-described high pressure cleaning method. This is disclosed in Patent Document 1.

By the way, as a preliminary survey before such high-pressure washing is performed, for example, a small waterproof camera (camera head) may be inserted into the vertical tube from the upper floor to the lower floor, and the state inside the tube may be observed.
In conducting this preliminary survey, in general, drainage is not prohibited in the entire apartment building, but in order to insert the camera head into the pipe, domestic wastewater and toilet drainage adhere to the imaging window on the front of the camera head. In many cases, the field of view of the camera becomes poor.

Even when there is no domestic wastewater or toilet drainage as described above, hot water etc. is drained into the drainage pipe, so there is a problem that the front of the camera head is clouded due to the influence of temperature and humidity. The dirt adhering to the film is peeled off by the camera head and adheres to the front surface, causing a problem of obstructing the field of view.
As described above, whenever the field of view of the camera is hindered by dirt or the like, the camera head is lifted and cleaned, and the operation of inserting it again into the tube is unavoidable. Therefore, it is necessary to devise such as conducting a preliminary survey by selecting a time zone where the drainage of the apartment house is relatively low.

  Further, as disclosed in Patent Document 1, when the camera head is inserted into the pipe during high-pressure cleaning, in addition to the above-described problems, the camera head receives splashing of cleaning water from the spray nozzle and high-pressure water. Due to the temperature and humidity increase. Therefore, the imaging window in front of the camera head is affected by water droplets and humidity adhering to the imaging window, and the field of view of the camera actually becomes poor within a short time.

  Therefore, an attempt is made to put the camera head alone after cleaning the inside of the tube and observe the cleaning state inside the tube, but for a while after cleaning the inside of the tube, mist-like moisture (water smoke) drifts in the tube. In addition, the temperature of the camera remains, resulting in poor visibility of the camera. Therefore, it is necessary to devise such as inserting the camera head after a further time after the cleaning operation, and the reduction in work efficiency is unavoidable.

In order to solve the above-described problems in this type of camera device for observing the state in the drain pipe, it is conceivable to have a function of removing dirt on the imaging window in front of the camera head.
For example, a surveillance camera installed on the road or the like has been proposed that has a function of removing water droplets and dirt adhering to the imaging window by receiving rainwater or the like. As an example, Patent Document 2 discloses a configuration in which an air discharge nozzle is installed toward a dome cover that covers a camera body. Then, water droplets and dirt adhering to the dome cover can be removed by discharging compressed air (described as a shock wave in Patent Document 2) from the discharge nozzle toward the dome cover. It becomes.

JP 2002-27598 A JP 2015-25939 A

The present invention uses a camera head for observing the inside of a water distribution pipe or the like as shown in Patent Document 1, and in order to remove the dirt of its imaging window, dirt that contains water in particular as shown in Patent Document 2 It is an object of the present invention to provide a camera device having a function of removing the camera.
In this case, it is necessary to connect at least a transmission cord for sending out a video signal photographed by the camera body to the camera head, and the compressed air necessary for removing dirt on the imaging window of the camera head It is also necessary to connect an air hose for sending to the head side.

In addition, when the camera head is inserted into the pipe together with the spray nozzle for cleaning the inside of the pipe, a high-pressure water hose for sending cleaning water to the spray nozzle is also inserted into the drain pipe. Therefore, they are twisted and entangled with each other in a narrow pipe, which causes problems such as smooth work being excluded.
Further, in a pipe containing moisture, especially a signal transmission code for sending a video signal causes a failure even if it is slightly damaged, and has a factor that hinders work.

  Therefore, the main problem to be solved by the present invention is that the imaging window can be effectively cleaned by using air discharge, and the arrangement of the signal transmission cord and the air hose connected to the camera head is devised. By providing the above, for example, it is possible to effectively prevent the signal transmission cord and the air hose from being twisted or entangled in the drain pipe, and to provide a camera device that can contribute to improvement of work efficiency. In the point.

  A camera device with a dirt removing function according to the present invention made to solve the above-described problems includes a waterproof capsule having an imaging window, and a camera body that is accommodated in the waterproof capsule and acquires an image through the imaging window And an air hose connected to the waterproof capsule and for sending air into the waterproof capsule, and an air discharge nozzle communicating with the waterproof capsule and capable of discharging the air in the waterproof capsule toward the front surface of the imaging window And a signal transmission code for transmitting a video signal picked up by the camera body, wherein the signal transmission code is accommodated in the air hose along the length direction of the air hose. .

  In this case, in one preferred embodiment, the imaging window is formed at a front end portion of the waterproof capsule, the air hose is connected to a rear end portion of the waterproof capsule, and the side wall of the waterproof capsule is aligned along the axial direction. The air sent by the air hose can be discharged from the air discharge nozzle through the communication hole formed in this way.

  In the first aspect of the camera device with a dirt removal function according to the present invention, a front end cover member and the air discharge nozzle are formed at the front end portion of the waterproof capsule so as to surround the periphery of the imaging window. The nozzle forming member is disposed, and the tip cover member and the nozzle forming member are each formed with a tapered portion whose diameter increases from the front end portion toward the side surface of the waterproof capsule.

  In the second embodiment of the camera device with a dirt removing function according to the present invention, a ring-shaped nozzle in which the air discharge nozzle is formed at the front end portion of the waterproof capsule so as to surround the imaging window. A forming member is disposed, and the nozzle forming member is formed with a taper portion whose diameter increases from the front end portion toward the side surface of the waterproof capsule.

  Furthermore, the other end of the air hose connected to the waterproof capsule is connected to an air supply source via an air delivery control device, and the air delivery control device is set at a predetermined time interval or by manual operation. It is desirable to have a function of sending air from the air supply source to the waterproof capsule at an arbitrary timing.

  According to the above-described camera device with a dirt removal function, the compressed air sent to the waterproof capsule (camera head) side by the air hose is intermittently directed toward the imaging window disposed on the front surface of the waterproof capsule by the air discharge nozzle, or It is discharged at an arbitrary timing. Therefore, every time compressed air is discharged from the nozzle, the dirt on the imaging window is removed, and clear imaging by the camera body housed in the waterproof capsule can be made possible.

In this case, the signal transmission code for transmitting the video signal from the camera body is accommodated along the length of the air hose in the air hose that feeds air into the waterproof capsule.
Therefore, for example, it is possible to effectively prevent the occurrence of twisting or entanglement between the air hose and the signal transmission cord in the drain pipe, in addition to the hose that sends cleaning water to the spray nozzle. it can. Thus, it is possible to provide a camera device that guarantees reliable protection of the signal transmission code and can contribute to improvement of work efficiency.

It is a schematic diagram which shows a mode that the camera head was thrown into the vertical pipe of a water distribution pipe with the nozzle for washing | cleaning. It is sectional drawing of the state which fractured | ruptured the camera head of the 1st form in the center. It is the front view which expanded and showed the state which looked at the camera head of the 1st form from the front. It is sectional drawing of the state which fractured | ruptured the camera head of the 2nd form in the center. It is the front view which expanded and showed the state which looked at the camera head of the 2nd form from the front. It is the partial perspective view which showed the structure of the branch joint which branches an air hose and a signal transmission cord. It is the schematic diagram which showed the video monitor connected to a branch joint, an air sending control apparatus, and an air supply source.

A camera device with a dirt removing function according to the present invention will be described based on an embodiment shown in the drawings.
FIG. 1 shows a state in which a high-pressure water injection nozzle 1 and a camera head 10 are inserted into a vertical pipe A of a water distribution pipe. The high-pressure water injection nozzle 1 is formed in a cylindrical shape as a whole, connected to the rotary joint 3, a nozzle body 2 that sprays high-pressure water while rotating, a rotary joint 3 that rotatably supports the nozzle body 2. A high-pressure water hose 4 is provided.
Thereby, the high-pressure water sent by the high-pressure water hose 4 is injected from the injection port 2 a of the nozzle body 2 through the rotary joint 3.

In the nozzle body 2 shown in this example, a plurality of (for example, four) high-pressure water injection ports 2 a are formed at equal intervals in the circumferential direction, and the axis of each injection port 2 a is the same as that of the nozzle body 2. It is formed in a direction along the circumference.
Therefore, the nozzle body 2 rotates about the rotary joint 3 by the reaction force of the high-pressure water ejected from each ejection port 2a. Thereby, the spray water from each spray port 2a is sprayed evenly in the pipes of the water distribution pipes, and the solid matter or the like adhering to the pipes receives the high-pressure water, and is efficiently peeled off and removed from the pipe walls.

A camera head 10 is arranged on the upper part of the water distribution pipe (longitudinal pipe A) at a predetermined interval with respect to the position of the spray nozzle 1. A specific configuration of the camera head 10 will be described later with reference to FIGS. 2 to 5, but the camera head 10 is suspended by an air hose 25. And the latching body 30 provided with the wire is attached to the nearest part of the camera head 10 of the air hose 25, The camera head 10 is a part of the high-pressure water hose 4 which suspends the injection nozzle 1 by this latching body 30. Are locked together.
Further, the spray nozzle 1 and the camera head 10 are controlled so as to move in the water distribution pipe (longitudinal pipe A) at a constant interval. Thereby, the washing state in the pipe A by the injection nozzle 1 can be imaged by a camera body described later in the camera head 10.

2 and 3 show the configuration of the camera head 10 according to the first embodiment. The camera head 10 has a waterproof capsule 12 that is formed in a cylindrical shape and has an imaging window 11 at a front end, and a waterproof capsule 12 inside. And a camera (video camera) main body 13 that acquires video through the imaging window 11. The camera body 13 shown in this example uses an infrared video camera.
In addition, the imaging window 11 on the front surface of the waterproof capsule 12 is provided with a disk-shaped see-through glass (shown by the same reference numeral 11 as the imaging window) as shown in FIG. A tip cover member 14 formed in a C shape so as to surround the nozzle and a nozzle forming member 15 are attached.

The tip cover member 14 is fastened to the waterproof capsule 12 by three screws indicated by reference numeral 16, and the nozzle forming member 15 is fastened to the waterproof capsule 12 by two screws indicated by reference numeral 17. The tip cover member 14 and the nozzle forming member 15 are formed with tapered portions 14a and 15a that increase in diameter from the respective front end portions toward the side surface of the waterproof capsule 12.
The tapered portions 14a and 15a formed on the front surface of the camera head 10 are, for example, as a pre-inspection before performing high-pressure cleaning, when the camera head 10 is put into the tube A alone, the corners at the tip of the camera head 10 are used. The corners can contribute to reducing the degree of contamination of the imaging window 11 by removing the dirt accumulated on the inner wall of the tube A.

An air discharge nozzle 18 is attached to the nozzle forming member 15, and the air discharge nozzle 18 is provided with a waterproof capsule through a communication hole 12 a formed in the side wall of the waterproof capsule 12 along the axial direction. The air supplied into the air 12 can be discharged from the air discharge nozzle 18.
That is, the nozzle hole formed in the air discharge nozzle 18 is bent at an acute angle with respect to the communication hole 12 a formed linearly along the side wall of the waterproof capsule 12. Thereby, the air supplied into the waterproof capsule 12 can be discharged from the air discharge nozzle 18 toward the see-through glass 11 of the imaging window.

  A lid 19 that closes the waterproof capsule 12 is attached to the rear of the waterproof capsule 12, and the lid 19 is fastened by a screw (not shown) that is screwed into a lid fastening hole 12 b formed in the waterproof capsule 12. Is done. The camera main body 13 in the waterproof capsule 12 is sealed and fixed by two O-rings 21 disposed between the inner periphery of the waterproof capsule 12 and the back side of the camera main body 13 has a waterproof capsule. 12 is sealed by an O-ring 22 disposed between the rear end portion 12 and the lid 18.

  A joint 23 is attached to the lid 19, and an air hose 25 is connected through the joint 23. Thereby, the air sent into the waterproof capsule 12 via the air hose 25 can be discharged toward the see-through glass 11 of the imaging window from the air discharge nozzle 18 arranged in the nozzle forming member 15.

The camera body 13 is connected with a signal transmission cord 26 for transmitting the captured video signal. The signal transmission cord 26 is accommodated in the air hose 25 along the length of the air hose. .
The signal transmission code 26 shown in this embodiment also functions as a power cord that sends out a video signal from the camera (video camera) main body 13 and takes in a DC power source for operating the camera main body 13. .

4 and 5 show the configuration of the camera head 10 according to the second embodiment, and parts corresponding to the respective portions of the camera head 10 according to the first embodiment described with reference to FIGS. 2 and 3 are denoted by the same reference numerals. It is attached. Therefore, the detailed description is abbreviate | omitted suitably.
The camera head 10 according to the second embodiment is equipped with a normal (visible light) video camera body 13 instead of the infrared camera according to the first embodiment, and therefore surrounds the camera lens as shown in FIG. A plurality of white light emitting LEDs 27 are mounted.
The LED 27 is lit by a DC power supplied via a power cord 26 that also serves as a signal transmission code from the camera body 13 described above.

  Further, in the camera head 10 of the second embodiment, a ring-shaped nozzle forming member 15 is used, and an air discharge nozzle 18 is L-shaped on the nozzle forming member 15 as shown in FIG. It is drilled in a shape. And the air sent through the air hose 25 is connected to the nozzle forming member 15 via the communication hole 19a formed in the lid 19 and the communication hole 12a formed in the side wall of the waterproof capsule 12 along the axial direction. The air discharge nozzle 18 discharges the air.

  The nozzle hole of the air discharge nozzle 18 formed in the nozzle forming member 15 is bent at an acute angle with respect to the communication hole 12 a formed linearly along the side wall of the waterproof capsule 12. Thereby, the air sent by the air hose 25 can be discharged toward the see-through glass 11 of the imaging window.

  The nozzle forming member 15 is fastened to the waterproof capsule 12 by six screws 17 shown in FIG. 5 via a ring-shaped packing 28 disposed between the front end portion of the waterproof capsule 12. A ring-shaped packing 29 is also interposed between the waterproof capsule 12 and the lid 19 attached to the rear portion thereof, thereby constituting a waterproof function for the camera body 13. The nozzle forming member 15 is formed with a tapered portion 15 a that increases in diameter from the front end portion toward the side surface of the waterproof capsule 12. The tapered portion 15a has an arc shape with a slight roundness as compared with the camera head 10 of the first embodiment.

6 and 7 show an air supply source for supplying air or the like to the camera head of the first embodiment (FIGS. 2 and 3) or the camera head of the second embodiment (FIGS. 4 and 5). The example of each apparatus arrange | positioned at the work site side containing is shown.
FIG. 6 shows a branch joint 31, and this branch joint 31 functions to branch the air hose 25 and the signal transmission cord 26 connected to the camera head 10. That is, in the branch body 32, the air hose 25 is connected to an air hose 33 having a plug 34, and the air hose 33 is divided into a transmission cord 26 having a jack 36 at the tip. The transmission cord 26 is sealed with a packing 35 provided in the branch body 32.

  The jack 36 is connected to a video monitor 37 shown in FIG. 7 so that an image captured by the camera body 13 can be viewed. In addition, a data recording card 38 can be attached to the video monitor 37, and the captured video can be recorded on the data recording card 38.

  The code | symbol 41 shown in FIG. 7 has shown the air compressor as an air supply source. The air from the air supply source 41 is sent to the air delivery control device 43. That is, the socket 42 arranged in the air supply source 41 and the plug 44 arranged in the air delivery control device 43 are connected by an air hose (not shown). And the plug 34 of the branch joint 31 is connected to the socket 45 arrange | positioned at the air delivery control apparatus 43, and the air from the air delivery control apparatus 43 is sent to the above-mentioned camera head 10 side.

The air delivery control device 43 receives air from the air supply source 41, and sends out air to the camera head 10 side intermittent shot mode in which air is intermittently delivered at predetermined time intervals, and manual operation is optional. The function of selecting the one-shot mode for sending out air at the timing is provided.
That is, as shown in FIG. 7, a power lamp 46 indicating that the air delivery control device 43 is operable is disposed on the front surface of the air delivery control device 43. A toggle switch 47 capable of selecting each mode is arranged.

  The toggle switch 47 is turned off by placing the operation element in the center. Then, the intermittent shot mode is selected by tilting the operator of the toggle switch 47 upward, for example, and the air delivery control device 43 keeps the air constant every predetermined time (for example, 5 to 10 seconds). Time (for example, 1 second or less) acts to send out to the camera head 10 side.

  Therefore, the air sent from the air delivery control device 43 side is received, and the compressed air is discharged from the air discharge nozzle 18 of the camera head 10 toward the fluoroscopic glass 11 of the imaging window at predetermined time intervals. Thereby, water droplets and dirt adhering to the see-through glass 11 of the imaging window are blown off by the compressed air from the nozzle 18 and cleaned, and a clear image can always be taken by the camera body 13.

On the other hand, the one-shot mode is selected by, for example, depressing the operator of the toggle switch 47 provided in the air delivery control device 43 downward. In this case, each time the push switch (one-shot ON switch) 48 disposed below the toggle switch 47 is operated, the air delivery control device 43 keeps air for a certain time (for example, one second or less), and the camera head. Send to 10 side. Thereby, water droplets and dirt adhering to the see-through glass 11 of the imaging window are similarly cleaned, and a clear image can be taken by the camera body 13.
The one-shot mode described above has a function of sending air from the air supply source 41 to the camera head 10 at an arbitrary timing by manual operation. It can be used effectively when it occurs in the house or when the dirt does not occur even for a relatively long time.

  According to the camera device having the dirt removing function described above, the intermittent shot mode and the one-shot mode can be selected and the air is supplied discontinuously to the camera head 10 side. Thus, the dirt on the imaging window can be cleaned. Therefore, when the air compressor 41 is used as an air supply source, a sufficient result can be obtained by preparing a relatively small air compressor, which can contribute to improving work efficiency.

Further, the signal transmission cord 26 that obtains the video signal from the camera head 10 side is configured to be accommodated in the air hose 25 that feeds air to the camera head 10 side along the length direction of the air hose.
Therefore, in a narrow drainage pipe, it is possible to prevent the signal transmission cord 26 from being twisted or entangled including the air hose 25 and the high-pressure water hose 4 that sends cleaning water to the spray nozzle 1. As a result, reliable protection of the signal transmission code 25 is ensured, and it is possible to provide a camera device that can contribute to an improvement in work efficiency. An effect can be obtained.

  In the above-described embodiment, an example is shown in which an air compressor is used as an air supply source. Commercially available dust sprays can also be used.

DESCRIPTION OF SYMBOLS 1 Injection nozzle 4 High pressure water hose 10 Camera head 11 Imaging window (transparent glass)
DESCRIPTION OF SYMBOLS 12 Waterproof capsule 12a Communication hole 13 Camera body 14 Tip cover member 14a Taper part 15 Nozzle formation member 15a Taper part 18 Air discharge nozzle 19 Lid body 19a Communication hole 23 Joint 25 Air hose 26 Signal transmission cord (power cord)
31 Branch joint 36 Jack 37 Video monitor 38 Data recording card 41 Air supply source (air compressor)
43 Air delivery control device 46 Power lamp 47 Toggle switch 48 One-shot button A Water pipe (vertical pipe)

Claims (5)

A waterproof capsule having an imaging window;
A camera body that is housed in the waterproof capsule and acquires an image through the imaging window;
An air hose connected to the waterproof capsule and sending air into the waterproof capsule;
An air discharge nozzle communicating with the inside of the waterproof capsule and capable of discharging the air in the waterproof capsule toward the front surface of the imaging window;
A signal transmission code for transmitting a video signal imaged by the camera body;
And the signal transmission cord is accommodated in the air hose along the length direction of the air hose.   The imaging window is formed at the front end portion of the waterproof capsule, the air hose is connected to the rear end portion of the waterproof capsule, and through a communication hole formed along the axial direction on the side wall of the waterproof capsule, The camera device with a dirt removing function according to claim 1, wherein the air sent by the air hose can be discharged from the air discharge nozzle.   A front end cover member and a nozzle forming member on which the air discharge nozzle is formed are arranged at the front end portion of the waterproof capsule so as to surround the periphery of the imaging window. The camera device with a dirt removing function according to claim 2, wherein a taper portion having a diameter increasing from a front end portion of the waterproof capsule toward a side surface of the waterproof capsule is formed.   A ring-shaped nozzle forming member in which the air discharge nozzle is formed is disposed at the front end portion of the waterproof capsule so as to surround the periphery of the imaging window, and the waterproof capsule from the front end portion is disposed on the nozzle forming member. The camera device with a dirt removing function according to claim 2, wherein a taper portion having a diameter increasing toward a side surface of the device is formed.   The other end of the air hose connected to the waterproof capsule is connected to an air supply source via an air delivery control device, and the air delivery control device can be set at a predetermined time interval or by manual operation. 5. The camera device with a dirt removing function according to claim 1, further comprising a function of sending air from the air supply source to the waterproof capsule at a timing.

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