KR101860275B1 - Endoscope unit - Google Patents

Abstract

An endoscope unit includes a photographing part having an image pickup device for converting photographed image data into an electric signal, a connection part having a flexible circuit board for transmission which is electrically connected to the image pickup device and transmits the electric signal converted by the image pickup device to an image processing device, and a ground part which is provided in the photographing part and discharges noise introduced into the photographing part or the connection part due to electrical contact with a grounded object to the outside through the grounded object. It is possible to prevent the data from being damaged due to the influx of noise.

Description

ENDOSCOPE UNIT}

The present invention relates to an endoscope unit.

A steam generator in a nuclear power plant has a number of heat transfer tubes, and the gap between the heat transfer tubes and the heat transfer tubes is very narrow. However, sludge and foreign matter may flow into the gaps between the heat transfer tubes and damage the heat transfer tubes. In order to prevent damage to such a tube, a visual inspection is periodically performed. In order to perform a smooth inspection even in a narrow gap, an endoscopic inspection is carried out by connecting a camera to a flexible thin plate having straightness and ductility.

However, in the related art, there has been a problem that noise is introduced in the process of transmitting the image data obtained through inspection through the flexible thin plate, and errors are generated in the transmitted data.

In the conventional endoscope devices, a camera and an illumination device for an endoscope inspection are connected to an endoscope device by soldering. However, it takes a long time to connect by soldering. In case of poor connection, soldering is removed and a camera and a lighting device There was also a time-consuming problem to reconnect.

An object of the present invention is to provide an endoscope unit which can be easily handled even in a narrow space and can prevent data from being damaged due to the inflow of noise.

Another object of the present invention is to provide an endoscope unit that is easy to connect and detach from a camera and a lighting device.

In one example, the endoscope unit comprises: an imaging section having an imaging element for converting photographed image data into an electric signal; A connection part having a flexible circuit board for transmission which is electrically connected to the image pickup device and transmits an electric signal converted by the image pickup device to the image processing device; And noise generated in the process of transmitting the image data and transmitted to the photographing unit or the connecting unit, which is provided on the outer surface of the photographing unit and which is in contact with the grounded object which is in contact with the ground as an inspection object, And a grounding part for conducting the photographing part and the grounded object to each other so as to be discharged to the ground.

According to the present invention, it is possible to prevent the noise introduced into the photographing unit and / or the connection unit from being directly discharged to the outside through a grounded object before the noise is transmitted to the image processing apparatus, thereby preventing damage to the electric signal.

In addition, according to the present invention, the imaging unit is detachably coupled to the connection unit in the form of a module, so that it is easy to combine the imaging unit and replace the imaging unit when the imaging unit fails.

According to the present invention, there is provided a signal line shielding body and a power line shielding body which surround signal lines and power line lines formed on a flexible circuit board in a three-dimensional shape, so that even when an electric signal is transmitted to an image processing apparatus, noise is prevented from flowing into the signal line .

1 is a schematic view showing a state in which an endoscope unit according to an embodiment of the present invention performs an endoscopic examination.
2 is a schematic view showing a state in which a connection portion of an endoscope unit according to an embodiment of the present invention is wound.
3 is a perspective view showing a state in which the driving part of the present invention moves the connection part.
4 is a front view showing the photographing unit of the present invention.
5 is a rear view showing the photographing unit of the present invention.
6 is a front view showing a photographing unit including the housing of the present invention.
7 is a rear view showing the photographing unit including the housing of the present invention.
8 is a perspective view showing a laminated state of the flexible circuit board for transmission.
9 is a cross-sectional view of the flexible circuit board for transmission of FIG. 8 taken along the line AA.

Hereinafter, some embodiments of the present invention will be described in detail with reference to exemplary drawings. It should be noted that, in adding reference numerals to the constituent elements of the drawings, the same constituent elements are denoted by the same reference symbols as possible even if they are shown in different drawings. In the following description, well-known functions or constructions are not described in detail since they would obscure the understanding of the embodiments of the present invention.

1 is a schematic view showing a state in which an endoscope unit according to an embodiment of the present invention performs an endoscopic examination. 2 is a schematic view showing a state in which a connection portion of an endoscope unit according to an embodiment of the present invention is wound. 3 is a perspective view showing a state in which the driving part of the present invention moves the connection part. Hereinafter, an endoscope unit according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3. FIG.

The endoscope unit according to an embodiment of the present invention is for inspecting a plurality of heat transfer tubes of a steam generator in a nuclear power plant, for example. The endoscope unit includes a photographing unit 1, a connection unit 2, a ground unit 3, 5).

First, the photographing section 1 is configured to photograph an inspection object g such as a heat transfer pipe. As shown in FIG. 3, the photographing unit 1 is provided with a foreign substance removing unit 7 to remove foreign substances found during the inspection.

The connection unit 2 has a configuration for connecting the image processing apparatus 4 for controlling the image data and the photographing unit 1 to transmit the image data acquired from the photographing unit 1 to the image processing apparatus 4 . The main body 5 is electrically connected to the image processing apparatus 4 and is provided with a space for winding up the connection unit 2 and storing it. As shown in FIG. 2, the connecting portion 2 is wound into the main body 5 and stored, and then can be taken out to a position to be inspected. The connection unit 2 is electrically connected to the image processing apparatus 4 through a connector or a terminal 2a and can transmit the image data to the image processing apparatus 4 (refer to FIG. 1).

At this time, the connector or terminal 2a is connected to the slip ring 5a through engagement with a connector (not shown) formed in a circuit board (not shown) provided at the center of the main body 5, and the slip ring 5a (Not shown) and the image processing device 4 and the control device (not shown) of the rear stage, thereby enabling power and various signals to be transmitted and received. The slip ring 5a refers to both a contact type and a non-contact type, and includes all the techniques for establishing an electrical connection with the rotating body 5.

The endoscope unit may further include a driving unit 6 for moving the connecting unit 2 so that the driving unit 6 moves the connecting unit 2 toward the front of the photographing unit 1 (II) which is the opposite direction of the first direction (I) or the first direction (I).

The driving unit 6 may include a rotating cylindrical body 60 and a driving projection 61 protruding from the outer surface of the body 60. The connection part 2 may further include a driving hole 25 formed at predetermined intervals along the longitudinal direction. The drive projection 61 can be sequentially inserted into the drive hole 25 in accordance with the rotation of the body 60 and the drive projection 61 inserted in the drive hole 25 is rotated to connect the connection portion 2 to the body 60 in a direction corresponding to the rotating direction of the rotating shaft.

As shown in FIG. 2, the photographing unit 1 is provided with a magnet 18, and the main body 5 is provided with a sensor 50. The sensor 50 can sense the magnetism of the magnet 18. That is, when the connecting portion 2 is sufficiently wound around the second direction by the driving portion 6 and the photographing portion 1 approaches the main body 5, the sensor 50 senses the magnetism of the magnet 18, It can be confirmed that the winding of the winding unit 2 is completed. Therefore, it is possible to prevent the problem that the photographing unit 1 is wound into the main body 5 and damaged.

The grounding unit 3 is configured to make electrical contact with a grounded object g, which is an object to be inspected such as a heat transfer pipe, for discharging the noise introduced into the photographing unit 1 and / or the connecting unit 2 to the outside. The grounding section 3 is provided in the photographing section 1 and electrically contacts the grounded object g like the heat transfer tube to ground the noise introduced into the photographing section 1 and / (G).

Hereinafter, each configuration will be described in more detail.

Shooting section

4 is a front view showing the photographing unit of the present invention. 5 is a rear view showing the photographing unit of the present invention. 6 is a front view showing a photographing unit including the housing of the present invention. 7 is a rear view showing the photographing unit including the housing of the present invention. Hereinafter, the photographing unit of the endoscope unit according to the embodiment of the present invention will be described in detail with reference to FIG. 4 to FIG.

The photographing section 1 includes a photographing device 11 for photographing the object to be inspected and converting the photographed image data into an electric signal. The photographing section 1 may include a photographing lens 110 for photographing an object to be inspected and an illumination device 13 for providing a visual field around the object to be inspected (refer to FIG. 3). As the image pickup device 11, a CCD sensor or a CMOS sensor Or the like can be used.

4 and 5, the photographing section 1 is configured such that the image capturing device 11, the illumination device 13, and the like are formed in a shape embedded in the circuit board 10 for image capture, . The circuit board 10 for image pickup may include a printed circuit board, a flexible printed circuit board or a rigid flexible printed circuit board, and the image pickup element 11 And the lighting device 13 may be built in the circuit board 10 for imaging in advance and may be modularly constructed.

The fact that the photographing section 1 is constructed in a modular manner can be obtained by arranging the image capturing device 11 and the illumination device 13 or the like in a configuration separate from the connection section 2 in a state in which the image capturing circuit board 10 is embedded . That is, the circuit board 10 for imaging can be electrically and mechanically detachably coupled to the connecting portion 2 (a flexible circuit board 20 to be described later), and the imaging device 11 and the lighting device 13 Can be operated by being electrically connected to circuits formed on the circuit board 10 for image capture and coupling the circuit board 10 for image capture with the connection portion 2.

Therefore, if the user has prepared a plurality of modularly arranged photographing units 1 and a problem occurs in the imaging device 11 or the illuminating device 13, It is possible to normalize the endoscope unit by separating and joining the prepared new imaging unit 1 to the connection unit 2. [

The photographing unit 1 may further include a signal expansion board 17. [ The signal expanding board 17 is for extending a distance at which the electric signal converted by the imaging element 11 is transmitted to the image processing apparatus 4 through the connection portion 2 and includes an image pickup element 11 and a connection portion 2).

Conventionally, there is a problem that the length of the connection portion can not be made long because the distance over which the electric signal can be transmitted from the photographing portion is limited. However, according to the present invention, since the photographing unit 1 further includes the signal expanding board 17, the length of the connecting portion 2 can be made longer than that of the related art, so that the examination distance that the endoscope unit can examine is also extended .

The signal expansion board can refer to a board with serial or serial communication (I2C, SPI, CAN, 485, LIN, USB, I2S, MOST50), buffer, and OP AMP. Although a separate board is shown in FIG. 4 as being provided in the photographing unit 1, it is possible to use serial communication or serial communication (I2C, SPI, CAN, 485, LIN, USB, I2S, MOST50) May be provided so as to be embedded in the circuit board 10 for image capture.

On the other hand, as shown in Figs. 6 and 7, the circuit board 10 for imaging, the imaging element 11, the lighting apparatus 13, and the like can be molded 15 by epoxy or silicone. The imaging element 11 and the illumination device 13 can be firmly fixed to the circuit board by molding the imaging section 1 with epoxy or silicone so that the imaging element 11, (13) and the like can be prevented from being affected by dust or moisture.

Alternatively, the photographing section 1 may further include a housing 15. The housing 15 can accommodate the circuit board 10 for imaging. 6 and 7, reference numeral 15 may represent a housing or may represent a molding.

The photographing unit 1 can form one module in a state in which the circuit board 10 for imaging is housed in the housing 15. [ Therefore, the endoscope unit can be completed by coupling the housing 15 to the connection portion 2, and the replacement of the imaging portion 1 can also be performed by separating the housing 15 from the connection portion 2.

Grounding portion

Hereinafter, a grounding portion of an endoscope unit according to an embodiment of the present invention will be described with reference to FIGS. 1, 4 to 7. FIG.

1, the grounding section 3 is provided in the photographing section 1 and is in electrical contact with a grounded object g, such as a heat transfer tube, so that the photographing section 1 and / 2) to the outside through the grounded object (g). Here, the grounding is a chassis ground or frame ground, and the contact area is wider than the signal ground formed in the circuit pattern, so that a relatively excellent grounding effect can be obtained. The grounding unit 3 may be provided to be electrically connected to a signal grounding ground (not shown) formed on the flexible circuit board 20 for transmission. By reducing the potential difference and increasing the grounding area relatively, May be further increased.

At this time, the ground portion 3 is formed in a size and shape so as to be able to contact a plurality of grounded objects g at the same time, so that multiple contacts are made so that noise can be discharged to the outside through the plurality of grounded objects g . As the number of grounded objects g to which the grounding section 3 contacts is increased, the rate at which the introduced noise is emitted may also increase.

The noise introduced into the photographing section 1 or the connecting section 2 by the grounding section 3 is provided in the photographing section 1 so that noise that has been grounded before moving to the connecting section 2 and the image processing apparatus 4 side It is possible to prevent the electric signal from being damaged by the noise in the process of being transmitted to the image processing apparatus 4. [ Therefore, it is possible to transmit high-quality image data to the image processing apparatus 4.

The grounding unit 3 may include a conductor 30 embedded in at least one of both surfaces of the circuit board 10 for image capture. 5, it is shown that the conductor 30 is embedded in the rear surface of the circuit board 10 for imaging. However, the conductor 30 can also be embedded in the front surface of the circuit board 10 for imaging.

The grounding unit 3 is embedded in the circuit board 10 for imaging and electrically connected to the object g to which the circuit board 10 for imaging is grounded during the endoscopic examination of the photographing unit 1 through the conductor 30 The noise introduced into the photographing section 1 or the connecting section 2 can be discharged to the outside through the circuit board 10 for imaging, the conductor 30 and the grounded object g. That is, since the grounding unit 3 is provided in the photographing unit 1, the photographing unit 1 can perform endoscopic inspection and also can discharge noise.

The grounding unit 3 may further include protrusions (not shown) protruding from the outer surface of the conductor 30 and in direct contact with the grounded object g. The shape of the protrusions is not particularly limited and may be, for example, a linear shape, a plate shape, a square shape, a circular shape, a streamline shape, a lattice shape, The protrusion is led out from the outer surface of the conductor 30, so that the contact between the grounding part 3 and the grounded object g can be made more smoothly.

6 and 7, when the photographing unit 1 includes the housing 15, the housing 15 can be electrically connected to the circuit board 10 for photographing, and the grounding unit 3 May be provided on the outer surface of the housing 15. That is, the grounding portion 3 can be provided on the outer surface of the housing 15, and the noise is transmitted to the circuit board 10 for imaging, the housing 15, (15), the ground (3), and the grounded object (g).

At this time, the grounding part 3 may include a conductor 30 provided on at least one of both surfaces of the housing 15, and the housing 15 itself may be made of a conductive material, May serve as the grounding part 3.

Connection

8 is a perspective view showing a laminated state of the flexible circuit board for transmission. 9 is a cross-sectional view of the flexible circuit board for transmission of FIG. 8 taken along line A-A. Hereinafter, with reference to FIGS. 6, 8 and 9, a connecting portion of an endoscope unit according to an embodiment of the present invention will be described.

As described above, the connecting section 2 connects the photographing section 1 and the image processing apparatus 4 to move the photographing section 1 toward the object to be photographed, and transmits the image data photographed by the photographing section 1 To the image processing apparatus 4. At this time, the connection section 2 has a flexible circuit board 20 for transmission to transmit the electric signal converted by the image pickup device 11 to the image processing apparatus 4. [ The flexible circuit board 20 for transmission can be electrically connected to the image pickup device 11 and can transmit the electric signal converted by the image pickup device 11 to the image processing device 4. [

The connecting portion 2 can be mechanically and electrically detachably coupled to the photographing portion 1. [ More specifically, the circuit board 10 for image pickup of the photographing section 1 has a first terminal 10a formed in a self-pattern on the side of the flexible circuit board 20 for transmission, May have a second terminal 20a formed in a self-pattern on the side of the circuit board 10 for imaging. The circuit board 10 for imaging may further include a first connector (not shown) for receiving the first terminal 10a, and the second terminal 20a may be slidably coupled to the inside of the first connector 20a The first terminal 10a and the second terminal 20a are electrically coupled to each other so that the connection portion 2 and the photographing portion 1 can be detachably coupled to each other (see FIG. 6). With this configuration, the photographing unit 1 can be easily coupled and separated to the connecting portion 2 in a modular fashion.

However, the present invention is not limited to this, and a second connector (not shown) for receiving the second terminal 20a may be provided on the flexible circuit board 20 for transmission so that the first terminal 10a is slidingly coupled to the second connector And the first connector provided on the circuit board for imaging 10 and the second connector provided on the flexible circuit board for transmission are detachably butt-coupled to each other so that the first terminal 10a and the second terminal 20a may be electrically connected to each other.

8, the flexible circuit board 20 for transmission may include at least one signal line 21, at least one power line 22, a signal line shield 24 and a power line shield 26 have.

First, the signal line 21 is configured to transmit an electric signal to the image processing device 4 or the like. The power line 22 is a configuration for supplying power to the image pickup device 11, the illumination device 13, . Here, the signal line 21 and the power supply line 22 refer to a thin circuit pattern printed on the flexible circuit board 20 for transmission.

The signal line shield 24 surrounds at least a part of the surface of the signal line 21 and can prevent noise from flowing into the signal line 21. [ The power line shield 26 surrounds at least a part of the surface of the power supply line 22 and can prevent noise generated from the power supply line 22 from flowing into the signal line 21. [

As the signal line shielding member 24 and the power line shielding member 26, a copper foil having the same material as the signal line 21 and the power line 22, or a silver foil or an EMI shielding member having excellent shielding effect may be used. The shapes of the signal line shielding body 24 and the power line shielding body 26 are not particularly limited and various patterns such as a net shape, a plate shape, a linear shape or a lattice shape can be used.

The signal line shield 24 and the power line shield 26 surround the periphery of the signal line 21 and the power line 22 and extend along the longitudinal direction of the signal line 21 and the power line 22, Dimensional shape that extends from one side to the other side. By forming the shielding body in a three-dimensional shape, the shielding performance can be improved by protecting the entire surface of the signal line 21 and the power line 22.

The transmission flexible printed circuit board 20 may further include a frame grounding unit (not shown) connected to the signal line shielding unit 24 and the power line shielding unit 26. Noises or the like introduced into the signal line shielding body 24 or the power line shielding body 26 without flowing into the signal line 21 can be discharged to the outside through the frame grounding portion. As described above, the ground for signal grounding can also be provided on the flexible circuit board 20 for transmission. By reducing the potential difference between the frame grounding portion and the signal grounding ground and increasing the grounding area, .

Therefore, in the endoscope unit according to the embodiment of the present invention, the noise introduced through the grounded object (g) is discharged from the photographing section (1) side, and the noise introduced into the signal line shielding body (24) Can be discharged.

However, unlike a general signal (power) cable, the signal line 21 and the power line 22 provided on the flexible circuit board 20 for transmission are printed in a thin film form, so that the signal line 21 and the power line 22 It may not be easy to form a shielding member of a shape surrounded by a three-dimensional shape. The flexible circuit board (20) for transmission according to the present invention is characterized in that a plurality of layers are stacked to form a three-dimensional signal line shield (24) and a power line shielding body (26).

8 and 9, the flexible circuit board 20 for transmission extends from one side to the other side of the flexible circuit board 20 for transmission, and has a signal line 21 and a power line 22 on the upper side, And a lower insulator 201 and an upper insulator 205 stacked on the upper and lower sides with the intermediate insulator 203 interposed therebetween. An uppermost insulator 207 may be stacked on the upper side of the upper insulator 205. The lower insulator 201, the intermediate insulator 203, the upper insulator 205, and the uppermost insulator 207 may be polyimide films.

The signal line shield 24 may include a side signal line shield 241, a lower signal line shield 243, an upper signal line shield 245 and a signal line plated through hole 246. The side signal line shielding body 241 is provided on the upper side of the intermediate insulator 203 and may be provided on the left and right sides of the signal line 21. [ The lower signal line shield 243 is provided on the upper side of the lower insulator 201 and may be provided at a position corresponding to the signal line 21 and the side signal line shield 241. The upper signal line shield 245 is provided on the upper side of the upper insulator 205 and may be provided at a position corresponding to the signal line 21 and the side signal line shield 241.

The signal line plated through hole 246 can be electrically connected to the upper signal line shield 245, the side signal line shield 241 and the lower signal line shield 243 through at least a part of the flexible circuit board 20 for transmission . A plurality of signal line plated through holes 246 may be provided along the longitudinal direction of the signal line 21. [

Likewise, the power line shield 26 may include a side power line shield 261, a bottom power line shield 263, an upper power line shield 265 and a power line plated through hole 266. The side power line shield 261 is provided on the upper side of the intermediate insulator 203 and may be provided on the right and left sides of the power line 22. The lower power line shield 263 is provided on the upper side of the lower insulator 201 and may be provided at a position corresponding to the power line 22 and the side power line shield 261. The upper power line shield 265 is provided on the upper side of the upper insulator 205 and may be provided at a position corresponding to the power line 22 and the side power line shield 261.

The power line plated-through hole 266 penetrates at least a part of the flexible circuit board 20 for transmission so that the upper power line shield 265, the side power line shield 261 and the lower power line shield 263 are electrically . A plurality of power line plated-through holes 266 may be provided along the longitudinal direction of the power source line 22.

As described above, since the flexible circuit board 20 for transmission has a laminated structure, the three-dimensional signal line shield 24 and the power line shield 26 surrounding the signal line 21 and the power line 22 are formed The noise to be introduced into the signal line 21 and the like can be effectively blocked.

If the signal line 21 and the signal line shield 24 are brought into contact with each other or the power line 22 and the power line shield 26 are in contact with each other, noise may flow into the signal line 21 or the power line 22 It is necessary to prevent the signal line shield 21, the signal line shield 24 and the power line 22 from contacting with the power line shield 26. 9, an upper insulator 205 is laminated between the signal line 21, the upper signal line shield 245, the power line 22, and the upper power line shield 265, and the signal line 21, Since the intermediate insulator 203 is laminated between the shielding body 243 and the power line 22 and the lower power line shielding body 263, contact between the signal line 21 and the power line 22 and the shielding bodies is prevented .

The flexible circuit board 20 for transmission can be integrally formed by applying pressure to the laminated structure. The intermediate insulator 203 and the upper insulator 205 are pressed against each other, A side insulator 204 is formed between the shielding body 241 and the power line 22 and the side power line shielding body 261 so that the signal line 21 and the side signal line shielding body 241 and the power line 22, The contact between the contact portions 261 can also be prevented

The foregoing description is merely illustrative of the technical idea of the present invention, and various changes and modifications may be made by those skilled in the art without departing from the essential characteristics of the present invention. Therefore, the embodiments disclosed in the present invention are intended to illustrate rather than limit the scope of the present invention, and the scope of the technical idea of the present invention is not limited by these embodiments. The scope of protection of the present invention should be construed according to the following claims, and all technical ideas within the scope of equivalents should be construed as falling within the scope of the present invention.

1:
2: Connection
2a: Connector or terminal
3: Ground
4: Image processing device
5: Body
6:
7: Foreign body removing device
10: Circuit board for image pickup
10a: first terminal
11:
13: Lighting device
15: Housing or molding
17: Signal Expansion Board
18: Magnet
20: Flexible circuit board for transmission
20a: second terminal
21: Signal line
22: Power line
24: Signal line shield
25: driving hole
26: Power line shield
30: conductor
50: Sensor
60: Body
61: driving projection
110: lens
201: lower insulator
203: medium insulator
204: Side signal line (power line) insulator
205: upper insulator
207: top insulator
241: Side signal line shield
243: Lower signal line shield
245: upper signal line shield
246: Signal line plated through hole
261: Side power line shielding
263: Lower power line shield
265: Top power line shield
266: Power line plated through hole
g: Grounded object (heat transfer pipe)

Claims (18)

An imaging section having an imaging element for converting photographed image data into an electric signal;
A connection part having a flexible circuit board for transmission which is electrically connected to the image pickup device and transmits an electric signal converted by the image pickup device to an image processing device; And
A noise generated in the process of transmitting the image data and flowing into the photographing unit or the connecting unit by the contact of the photographing unit with a grounded object which is provided on the outer surface of the photographing unit and which is in contact with the ground as an inspection object, And a grounding part for conducting the photographing part and the grounded object to each other so as to be discharged to the ground through the grounded object. The method according to claim 1,
Wherein the ground unit has a size that can contact with a plurality of the grounded objects at the same time and contacts the plurality of grounded objects to thereby transmit the noise introduced into the photographing unit or the connecting unit through the plurality of grounded objects To the endoscope unit. The method according to claim 1,
Wherein the grounding portion is electrically connected to a ground for signal ground formed on the flexible circuit board for transmission so as to reduce a potential difference with the grounded object and to increase a grounding area. The method according to claim 1,
Wherein the imaging section is formed in a shape in which the imaging element is embedded in a circuit board for imaging,
Wherein the imaging circuit board and the flexible circuit board for transmission are electrically and mechanically detachably coupled. The method of claim 4,
Wherein the grounding portion includes a conductor embedded in at least one of both surfaces of the circuit board for image pickup,
And the noise is discharged to the ground by bringing the circuit board for imaging into contact with the grounded object through the conductor. The method of claim 4,
Wherein the imaging circuit board includes a printed circuit board (PCB), a flexible printed circuit board (FPCB), or a rigid printed circuit board (RFPCB). The method of claim 4,
Wherein the circuit board for image pickup has a first terminal formed in a self-pattern on the side of the flexible circuit board for transmission,
The flexible circuit board for transmission has a second terminal formed in a self-pattern on the side of the circuit board for imaging,
The second terminal is slidably coupled to the inside of the first connector accommodating the first terminal or the first terminal is slidingly coupled to the inside of the second connector accommodating the second terminal, Wherein the imaging circuit board and the flexible circuit board for transmission are detachably coupled. The method of claim 5,
Wherein the grounding portion further comprises protrusions protruding from the outer surface of the conductor and contacting the grounded object. The method of claim 4,
Wherein the photographing unit further includes a housing accommodating the circuit board for photographing and electrically connected to the circuit board for photographing,
Wherein the grounding portion is provided on an outer surface of the housing,
Wherein the noise is discharged to the ground through the circuit board for photographing, the housing, the ground, and the grounded object. The method according to claim 1,
Wherein the photographing section further comprises a signal expansion board electrically connected to the imaging element and the flexible circuit board for transmission and for extending a distance over which the electrical signal is transmitted toward the image processing apparatus. The method of claim 4,
Wherein the imaging circuit board is provided with a signal expanding element electrically connected to the imaging element and the flexible circuit board for transmission and for extending a distance over which the electrical signal is transmitted toward the image processing apparatus. The method according to claim 1,
A main body for winding the connection portion and storing the connection portion therein; And
Further comprising: a sensor provided in the main body, for sensing the magnetism of a magnet provided in the photographing portion to thereby confirm that the connection portion is wound inside the main body. The method according to claim 1,
Wherein the flexible circuit board for transmission comprises:
At least one signal line for transmitting the electrical signal to the image processing apparatus;
At least one power line for supplying power to the imaging element; And
A signal line shield surrounding at least a part of a surface of the signal line and preventing the noise from flowing into the signal line; a signal line shield surrounding at least a part of the surface of the power line, And a power line shielding member. 14. The method of claim 13,
Wherein the signal line shielding body is formed in a three-dimensional shape surrounding the signal line and extending from one side to the other side of the transmission flexible circuit board along the longitudinal direction of the signal line,
Wherein the power line shield is formed in a three-dimensional shape that surrounds the power line and extends from one side of the flexible circuit board for transmission to the other side along the longitudinal direction of the power line. 14. The method of claim 13,
Wherein the flexible circuit board for transmission further comprises at least a signal line shielding member and a signal line insulator provided between the signal line shielding member and disconnecting the electrical connection between the signal line shielding member and the signal line shielding member. 14. The method of claim 13,
Wherein the flexible circuit board for transmission further comprises a power line insulator which includes at least the power line shield and is provided between the power line and the power line shield to cut off the electrical connection between the power line and the power line shield, Endoscopic unit. 14. The method of claim 13,
The flexible circuit board for transmission comprises an intermediate insulator extending from one side of the flexible circuit board for transmission to the other side and having the signal line and the power line on the upper side and a lower insulator laminated on the upper and lower sides with the intermediate insulator interposed therebetween, A top insulator,
Wherein the signal line shielding body includes a side signal line shield provided on the right and left sides of the signal line provided on the upper side of the intermediate insulator with a side insulator interposed therebetween and a signal line shield provided on a position corresponding to the signal line and the side signal line shield, And an upper signal line shield provided at a position corresponding to the signal line and the side signal line shield on the upper side of the upper insulator,
Wherein the power line shield comprises: a side power line shield provided on left and right sides of the power line, the side power line shield being provided on the upper side of the intermediate insulator with a side insulator interposed therebetween; and a power line shield provided on the power line and the side power line shield And an upper power line shield provided at a position corresponding to the power line and the side power line shielding unit, the upper power line shielding unit being provided on the upper insulator. 18. The method of claim 17,
The signal line shielding unit is further provided along the longitudinal direction of the signal line and further includes a signal line plated through hole for electrically connecting the upper signal line shield, the side signal line shield, and the lower signal line shield through the transmission flexible circuit board and,
The power line shielding unit may include a plurality of power line shielding members disposed along the longitudinal direction of the power line and electrically connecting the upper power line shielding member, the side power line shielding member, and the lower power line shielding member, The endoscope unit according to claim 1, further comprising a through hole.

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