JP4563100B2 - Endoscope device - Google Patents

Description

  The present invention relates to an endoscope apparatus having a drum portion around which an elongated insertion portion is wound.

  As is well known, endoscopes are widely used in the medical field and the industrial field. Endoscopes used in the medical field include various types of treatment tools that are used to observe organs in a body cavity by inserting an elongated insertion portion into a body cavity, or inserted into an insertion channel of a treatment tool as necessary. Can be treated.

  In addition, endoscopes used in the industrial field perform observations and various treatments of damaged and corroded sites by inserting a long and thin insertion part into a jet engine or piping of a power plant. Can do.

  Therefore, the insertion part of the industrial endoscope is formed to be very long compared to the medical use so that the inside of the long pipe can be sufficiently observed. The elongated insertion part of the industrial endoscope is wrapped around the outer periphery of the rotatable drum part arranged in the storage case of the endoscope device when not performing endoscopy, and is made as compact as possible. It is stored and stored in the endoscope apparatus.

  In the storage case of the endoscope apparatus, in addition to the drum unit described above, a power source unit, a light source unit that supplies illumination light to the insertion unit, and a camera control unit that performs signal processing on the imaging element at the distal end of the insertion unit An electric bending device having a drive mechanism for electrically bending the bending portion of the insertion portion, an electric bending control circuit portion for controlling the bending state of the bending portion by driving the electric bending device, and the like. Yes.

  The endoscope apparatus is configured to supply power from the power supply unit to the light source unit, the CCU, the electric bending device, the electric bending control circuit unit, and the like. In addition, a technique for arranging electric parts such as a light source unit and a CCU in the drum unit in order to reduce the size of the storage case is also well known.

  By the way, for example, the light source unit, the CCU, and the like generate heat when power is supplied. At this time, if heat is generated above a certain temperature, the light source part is cracked or the atmosphere in the drum is excessively heated, and heat is transmitted to the parts arranged in the other drum parts, which adversely affects the parts. May affect.

  In addition, the heat generating part that heats the atmosphere in the drum part such as the light source part is not necessarily arranged at the rotation center of the drum part. Therefore, the position of the heat generating unit such as the light source unit moves each time the drum unit rotates due to the winding condition of the endoscope insertion unit with respect to the outer periphery of the drum unit. For this reason, the heat generating portion is not always located at the specific position after the drum portion rotation is stopped.

  For example, in Patent Document 1, a large fan with a large air volume that sends air from the outside of the drum unit to every corner of the drum unit into a space in the storage case generated by arranging the light source unit, CCU, and the like in the drum unit. Was established. In addition, an endoscope apparatus has been proposed in which a storage case is provided with an intake portion for intake of air for cooling and a discharge portion for discharging the cooled atmosphere from the storage case.

In this endoscope apparatus, air sucked from an air intake section is sent to every corner of the drum section using a large fan, and the atmosphere used for cooling from the inside of the drum section is supplied from the exhaust section to the outside of the storage case. By doing so, the heat of the heat generating portion and the atmosphere in the drum portion heated by the heat generating portion are reliably cooled.
Japanese Patent Laid-Open No. 2001-264643

  However, since the endoscope apparatus proposed in Patent Document 1 uses a large fan, there is a problem that the storage case in which the fan is disposed is enlarged and the endoscope apparatus itself is enlarged.

  Further, when the fan is increased in size, noise such as wind noise of the fan in the case and motor noise for driving the fan increases, and it is necessary to take measures against noise.

  Furthermore, when electrical components such as the light source unit and CCU are arranged in the drum unit, an air ventilation path is considered so that air is reliably sent from the outside of the drum unit to the heat generating unit arranged in the drum unit. There is a disadvantage that the layout in the drum portion is restricted and the degree of freedom in design is limited.

  The present invention has been made in view of the above problems and the above circumstances, and can efficiently and reliably cool the heat generating portion disposed in the drum portion, and the layout of the members disposed in the drum portion. It is an object of the present invention to provide an endoscope apparatus that increases the degree of freedom and achieves downsizing and noise reduction of the apparatus.

In order to achieve the above object, an endoscope apparatus according to the present invention is provided with a rotatable drum portion that is flexible and capable of winding an elongated endoscope insertion portion around an outer peripheral surface or feeding it from the outer peripheral surface. An endoscope apparatus, wherein the drum portion is configured to have a space inside by a plurality of outer wall portions, and a through hole that communicates the inside and the outside of the drum portion with a rotation center of the outer wall portion of the drum portion. And a member for pivotally supporting the drum portion via a hollow pivot shaft having one end fixed to the outer wall portion so as to cover the outer periphery of the through hole. A heat generating part is disposed inside the drum part, and one end is connected to the heat generating part inside the drum part and the hollow part of the rotating shaft, and the other end rotates the drum part. that heat transfer means connected to the member to be movably supported is disposed And butterflies.

  According to the present invention, the heat generating portion disposed in the drum portion can be efficiently and surely cooled, the degree of freedom of layout of the members disposed in the drum portion is increased, and the apparatus is reduced in size and noise. Can be realized.

Embodiments of the present invention will be described below with reference to the drawings.
(First embodiment)
FIG. 1 is a perspective view showing a part of the endoscope apparatus showing the first embodiment of the present invention, and FIG. 2 is a diagram showing a configuration in which a part of the drum part and peripheral members in FIG. It is the partial perspective view shown.

  As shown in FIG. 1, an endoscope apparatus 1 is composed of an industrial endoscope (hereinafter referred to as an endoscope) 2 that is flexible and has an elongated insertion portion 21, and a storage case 8. Is configured. The storage case 8 is composed of a box 81 having a moving wheel 99 at the lower part and a lid 82 connected to the upper part of the box 81 so as to be openable and closable. Is stored. Note that the endoscope 2 may be a medical endoscope.

  A drum handle 141 for winding the insertion portion 21 of the endoscope 2 is attached to an outer peripheral surface 3a of a drum portion 3 described later disposed in the box 81 on the side surface of the box 81 of the storage case 8. A drum take-up lid 140 is provided.

  In addition, a monitor 7 for displaying an image of a region to be examined imaged by the endoscope 2 is disposed on the upper surface of the box 81. Furthermore, a hole 65 </ b> A that is an opening of an air flow path restricting portion 65 described later is formed on the upper surface of the box body 81.

  Inside the box 81 of the storage case 8, there is provided a buffer material (not shown) that absorbs an impact force applied to the stored endoscope 2 from the outside. Further, when the endoscope 2 is housed in the box 81, the insertion portion 21 of the endoscope 2 is wound around the outer peripheral surface 3a or when the endoscope 2 is used, the insertion portion 21 is moved to the outer peripheral surface. The drum unit 3, the main body 4, the power supply unit 40, the power distribution board 41 (see FIG. 2), and the like that are fed out from 3a are stored.

  As shown in FIG. 2, the power supply unit 40 is connected to the drum unit 3 via a power distribution board 41 and a cable (hereinafter referred to as FFC (Flat Flexible Cable)) 42. Specifically, the output connector 40 a of the power supply unit 40 is connected to the power distribution board 41.

  Further, the FFC 42 having a length corresponding to the number of rotations of the drum unit 3 and configured in a flexible and flat shape is wound around the rotation shaft 31 of the drum unit 3, and one end of the FFC 42 is, for example, It is connected to a camera control unit (not shown) (hereinafter referred to as CCU) disposed in the drum unit 3, and the other end is connected to the power distribution board 41. Therefore, the power supplied from the power supply unit 40 is supplied to the drum unit 3 via the FFC 42 by the power distribution board 41.

  The drum portion 3 is made of, for example, aluminum, and has a flange shape constituted by a tubular member having an upper surface plate 3j, a lower surface plate 3k, and an outer peripheral surface 3a which are outer wall portions. A through-hole 3jh (see FIG. 3) that connects the inside 3i of the drum portion 3 to the outside is formed at the rotation center 3s of the upper surface plate 3j of the drum portion 3. A heat generating unit 32, a heat pipe 100, and the like, which will be described later, are disposed in the interior 3i of the drum unit 3.

  Inside the apparatus main body 4, a power supply unit, an image recording unit substrate of the endoscope apparatus 1, a connection cable for connecting various substrates and the units, and the like (not shown) are arranged. Further, an air flow path restricting portion 65 that is an air ventilation path and a heat sink 77 that is a cooling means are disposed.

  Next, the internal structure of the box 81 will be described with reference to FIGS. 3 is a perspective front view of the box showing the configuration of the members disposed inside the box in FIG. 1, and FIG. 4 shows the configuration of the members disposed inside the drum portion of FIG. It is a see-through | perspective perspective view of a drum part.

  As shown in FIG. 3, one end 31a of a hollow rotating shaft 31 having a space 31i therein is arranged on the drum portion 3 so as to cover the outer periphery of a through hole 3jh formed in the rotating center 3s of the upper surface plate 3j. It is connected to a bearing (not shown) disposed at the rotation center 3s of the face plate 3j. In addition, the diameter of the internal space 31i of the rotating shaft 31 is the same as or larger than the diameter of the through hole 3jh. The other end 31 b of the rotating shaft 31 is connected to a bearing (not shown) disposed on one side surface of the apparatus body 4. Therefore, the apparatus main body 4 is a member that pivotally supports the drum portion 3 via the hollow rotation shaft 31.

  As shown in FIG. 4, a heat generating part 32, a heat pipe 100, a control board 150 for supplying power and various signals to various electrical components disposed in the internal part 3 i of the drum part 3, a drum 3 A motor 151 and the like for rotating the portion 3 are provided.

  The heat generating part 32 is configured by a member that generates heat when power is supplied, for example. For example, the main part is connected to the base end of the insertion part 21 by a lamp part for supplying illumination light to a base end face of a light guide (not shown) inserted through the insertion part 21 and a lighting device (both not shown). A CCU that performs signal processing on a configured light source unit or a charge coupled device type solid-state imaging device (not shown) disposed at the distal end of the insertion unit 21 may be used. Hereinafter, the heat generating part 32 will be described by taking the light source part as an example.

  As shown in FIGS. 3 and 4, the light source unit 32 is disposed near the outer peripheral surface 3 a of the inner part 3 i of the drum unit 3 together with various control boards 150 and a motor 151. Therefore, the light source unit 32 rotates integrally with the drum unit 3.

  The heat pipe 100 is disposed in the interior 3 i of the drum portion 3 and the interior space 31 i of the rotating shaft 31 by being bent as follows. First, by bending one end of the heat pipe 100 into a crank shape, one end is connected to one side surface of the light source unit 32 as shown in FIGS. 3 and 4, and then the drum unit 3 is rotated. At the center 3s, it is bent toward the apparatus body 4 side, inserted into a through hole 3jh formed in the upper surface plate 3j and the internal space 31i of the rotating shaft 31, and the other end is connected to one side surface of the apparatus body 4. Yes.

  In the heat pipe 100, for example, a small amount of liquid is enclosed in a metal pipe lined with a net-like material called wick, and when the liquid is heated on one side, it becomes a vapor stream and moves to the other side, and is cooled on the other side. It is also a known heat transfer medium utilizing a convection structure that liquefies and returns to the original state through the wick.

  A heat sink 77 serving as a cooling unit is disposed in the apparatus main body 4 at a position close to the position where the other end of the heat pipe 100 is connected. A heat sink is a metal plate used for heat dissipation, a so-called heat dissipation plate, and is generally used for cooling components that may malfunction due to heat generation. The heat sink 77 may be connected to the other end of the heat pipe 100 and rotate with the rotation of the drum unit 3.

  Inside the apparatus main body 4, an air flow path restricting portion 65, which is an air ventilation path formed of sheet metal or a heat insulating material, is fixed to the inner wall of the apparatus main body 4. One end of the air flow path restricting portion 65 is opened as a hole 65 </ b> A on the upper surface of the box 81, and the other end is opened near the heat sink 77. Therefore, the air flow path restriction portion 65 and the opening 65 </ b> A are located in the box body 81 regardless of the rotation of the drum portion 3.

  Hereinafter, the operation of the endoscope apparatus 1 of the present embodiment configured as described above will be described. First, when the light source unit 32 generates heat, heat of the light source unit 32 is transmitted to the heat pipe 100 from one end connected to one side surface of the light source unit 32, and further, the heat is transferred from the other end of the heat pipe 100 to the heat sink. 77. Thereafter, the atmosphere N is exhausted from the opening 65 </ b> A to the outside of the box 81 by the heat radiation of the heat sink 77 through the air flow path restricting portion 65. Thereby, the heat of the light source unit 32 is reliably cooled.

  At this time, the heat pipe 100 is inserted from the inside 3 i of the drum portion 3 into the through hole 3 jh formed in the rotation center 3 s of the upper surface plate 3 j of the drum portion 3 and the internal space 31 i of the rotation shaft 31. Therefore, when the insertion portion of the endoscope 2 is extended from the outer peripheral surface 3a of the drum portion 3 or wound around the outer peripheral surface 3a, the heat pipe 100 is twisted even if the drum portion 3 rotates. There is no. Therefore, the heat from the light source unit 32 can be reliably transmitted to the heat sink 77 provided in the apparatus main body 4 at any rotational position of the drum unit 3.

  Further, since the air flow path restricting portion 65 is made of sheet metal, a heat insulating material, or the like, heat is prevented from being transmitted to various members disposed inside the apparatus main body 4 due to heat radiation of the heat sink 77. Can do.

  Further, by using the heat pipe 100 for cooling the light source unit 32, it is possible to improve the quietness as compared with the case where a fan is used for cooling the light source unit 32. Furthermore, since the heat pipe 100 itself does not generate heat, it does not heat the atmosphere in the interior 3i of the drum portion 3, and thus prevents heat from being propagated to other electrical components disposed in the interior 3i of the drum portion 3. be able to.

  Further, since the heat pipe 100 can be bent into a desired shape, the layout of various members is not easily restricted in the interior 3i of the drum portion 3, and the degree of freedom in design can be increased.

  Further, since the cooling fan is not used for cooling the light source unit 32, the drum unit 3 can be reduced in size, and as a result, the box 81 of the storage case 8 can be reduced in size. The entire endoscope apparatus 1 can be reduced in size.

  Hereinafter, a modification of the present embodiment will be described with reference to FIGS. In the present embodiment, it has been shown that one end of the heat pipe 100 is connected to one side surface of the light source unit 32. Not limited to this, as shown in FIG. 5, one end of the heat pipe 100 may be connected to a certain part in the drum unit 3, for example, a top plate 3 j or a part having a metal exterior in the drum unit 3. Good.

  Further, as shown in FIG. 6, one end of the heat pipe 100 is not limited to the inside of the drum portion 3, but may be connected to an arbitrary position on the outer wall portion of the drum portion 3, for example, the outer wall portion of the upper surface plate 3j.

  In this way, by connecting one end of the heat pipe 100 to a part of the drum part 3, the atmosphere inside the drum part 3i can be lowered to a predetermined temperature or lower.

  Furthermore, in this Embodiment, although the example which uses one heat pipe 100 was given and demonstrated, it is not restricted to this, As long as the diameter of the internal space 31i of the rotating shaft 31 permits, it uses how many. It goes without saying that it is also good.

  Moreover, although the light source part 32 was shown arrange | positioned near the outer peripheral surface 3a of the inside 3i of the drum part 3, not only this but it may be arrange | positioned on the rotation center 3s of the drum part 3. Good. In this case, the heat pipe 100 is inserted into the interior 3 i of the drum portion 3 and the interior space 31 i of the rotating shaft 31 without being bent.

  Furthermore, another modification will be described below. In this embodiment, the heat generating part cooled by the heat pipe is shown by taking the light source part 32 as an example. However, the heat generating part may be a CCU, and is also disposed in the drum part and generates heat when supplied with power. Of course, any electrical component may be used.

  Hereinafter, another modification will be described. In the above-described embodiment, an example in which one light source unit is cooled has been shown. However, it is needless to say that the present invention can be applied to all heat generating units disposed in the drum unit 3. That is, you may make it cool a light source part, CCU, and another electric component simultaneously using a heat pipe.

  Furthermore, another modification will be described below with reference to FIGS. In the present embodiment, it has been shown that the apparatus main body 4 pivotally supports the drum portion 3 via the hollow rotation shaft 31. Not limited to this, as shown in FIGS. 7 and 8, the rotation shaft 31 may be configured to use a bearing 70 via a rotation ring 71. Further, as shown in FIG. 9, a configuration using only the bearing 70 may be used.

(Second Embodiment)
FIG. 10 is a perspective view showing a part of the endoscope apparatus according to the second embodiment of the present invention, and FIG. 11 is a diagram showing the structure of members disposed inside the box in FIG. It is a see-through | perspective front view of the box shown.

  The configuration of the endoscope apparatus 201 according to the second embodiment exhausts the heat of the heat pipe 100 to the outside of the box body 81 as compared with the endoscope apparatus 1 shown in FIGS. However, the only difference is that a fan 177 is used instead of the heat sink 77. Therefore, only this difference will be described, the same reference numerals are given to the same components as those in the first embodiment, and the description thereof will be omitted. Also in the present embodiment, the heat generation part will be described by taking the light source part 32 as an example.

  As shown in FIG. 10, a hole 65 </ b> A that is an opening of the air flow path restriction unit 65 is formed on the upper surface of the box 81 and on the apparatus main body 4 side. In the present embodiment, the hole 65A is an intake hole for sucking air A into a box to be described later.

  In addition, a hole 185 communicating with the inside of the box 81 is formed on the upper surface of the box 81 on the drum winding lid 140 side. In the present embodiment, the hole 185 is an exhaust hole for exhausting an atmosphere A ′ in the box 81 described later to the outside of the box 81.

  Inside the apparatus main body 4, a power supply unit, an image recording unit substrate of the endoscope apparatus 1, a connection cable for connecting various substrates and the units, and the like (not shown) are arranged. Further, an air flow path restriction unit 65 that is an air ventilation path and a fan 177 that is a cooling means are disposed.

  Specifically, as shown in FIG. 11, a fan 177 serving as a cooling unit is disposed in the apparatus main body 4 at a position close to a position where the other end of the heat pipe 100 is connected.

  Inside the apparatus main body 4, an air flow path restricting portion 65, which is an air ventilation path formed of a sheet metal or a heat insulating material, is disposed inside the apparatus main body 4 together with a built-in object. One end of the air flow path restricting portion 65 is opened as an intake hole 65 </ b> A on the upper surface of the box 81, and the other end is opened near the fan 177. Therefore, the air flow path restriction portion 65 and the intake hole 65 </ b> A are located in the box 81 regardless of the rotation of the drum portion 3.

  Hereinafter, the operation of the endoscope apparatus 201 of the present embodiment configured as described above will be described. First, when the light source unit 32 generates heat, the heat of the light source unit 32 is transmitted to the heat pipe 100 from one end of the heat pipe connected to one side surface of the light source unit 32. Thereafter, the heat transmitted to the other end of the heat pipe 100 is exhausted from the other end to the outside of the box 81 through the exhaust hole 185 by the fan 177.

  Specifically, as shown in FIG. 11, when the fan 177 rotates in one direction, the air A outside the box body 81 is introduced from the intake hole 65 </ b> A to the fan 177 through the air flow path restriction unit 65. . A temperature sensor may be provided in the interior 3i of the drum unit 3, and the fan 177 may be rotated only when the temperature sensor reaches a specified temperature or higher.

  Thereafter, the heat transferred to the other end of the heat pipe 100 is cooled by the air A, and the cooled atmosphere A ′ passes through the inside of the box body 81, and is exhausted from the exhaust hole 185 to the outside of the box body 81 by the fan 177. Exhausted. As a result, the heat of the light source unit 32 is reliably cooled.

  At this time, the heat pipe 100 is inserted from the inside 3 i of the drum portion 3 into the through hole 3 jh formed in the rotation center 3 s of the upper surface plate 3 j of the drum portion 3 and the internal space 31 i of the rotation shaft 31. Therefore, when the insertion portion of the endoscope 2 is extended from the outer peripheral surface 3a of the drum portion 3 or wound around the outer peripheral surface 3a, the heat pipe 100 is twisted even if the drum portion 3 rotates. There is no. Therefore, the heat from the light source unit 32 can be reliably transmitted to the fan 177 disposed in the apparatus main body 4 at any rotational position of the drum unit 3.

Other effects are the same as those of the endoscope apparatus 1 according to the first embodiment described above.
Hereinafter, modifications of the present embodiment will be shown. In the present embodiment, it has been shown that by rotating the fan 177 in one direction, the air A is sucked into the box 81 from the suction hole 65A and the atmosphere A ′ is exhausted from the exhaust hole 185.

  Not limited to this, by rotating the fan 177 in the direction opposite to the one direction, the air A is sucked into the box 81 from the exhaust hole 185 and the atmosphere A ′ is exhausted from the intake hole 65A. May be.

  Hereinafter, another modification will be described. Also in the present embodiment, the example in which one heat pipe 100 is used has been described. However, the present invention is not limited to this. Needless to say.

  Furthermore, another modification will be described below. In the present embodiment, it has been shown that the fan 177 serving as a cooling means is disposed in the apparatus main body 4 at a position close to the position where the other end of the heat pipe 100 is connected.

  Not limited to this, the heat sink 77 shown in the first embodiment described above is disposed in the apparatus main body 4 at a position close to the position where the other end of the heat pipe 100 is connected. A fan 177 may be disposed at a position facing the heat sink 77. According to such a structure, the heat of the light source part 32 can be cooled more effectively.

  At this time, the fan 177 is connected to the heat sink 77 and may rotate with the drum unit 3 or may be fixed to the apparatus main body 4 regardless of the rotation of the drum unit 3.

  Further, the other modification example in the second embodiment may be applied to the modification example in the first embodiment described above.

  Hereinafter, another modification will be described with reference to FIGS. In the first embodiment and the second embodiment described above, one end of the heat pipe 100 is connected to one side surface of the light source unit 32 disposed inside the drum unit 3, and the other end is the apparatus main body. 4 is shown to be connected to one side or heat sink 77.

  Not limited to this, as shown in FIG. 12, one end is connected to a position other than the position where one end of the heat pipe 100 of the light source unit 32 is connected, and the other end is an outer wall portion in the drum 3, for example, the lower surface plate 3k. A heat pipe 200 connected to the drum unit 3 may be separately provided.

  According to such a configuration, the heat of the light source unit 32 is dissipated by the heat pipe 200 in the outer wall portion of the drum unit made of aluminum metal or the like, so that the heat of the light source unit 32 is cooled more effectively can do.

  Even in this case, by rotating the fan 177 in the direction opposite to the one direction, the air A is sucked into the box 81 from the exhaust hole 185 and the atmosphere A ′ is exhausted from the intake hole 65A. You may do it.

  Further, as shown in FIG. 13, even if a fan 277 is further provided at the position where the other end of the heat pipe 200 of the lower surface plate 3k of the drum unit 3 is connected, the heat of the light source unit 32 is more effectively obtained. Can be cooled. Further, a heat sink may be used instead of the fan 277.

  Furthermore, in the first embodiment and the second embodiment described above, the heat sink 77 or the fan 177 is disposed in the apparatus main body 4 at a position close to the position where the other end of the heat pipe 100 is connected. Even though the heat sink 77 or the fan 177 is not provided, the same effects as those of the first embodiment and the second embodiment described above can be obtained.

[Appendix]
As described in detail above, according to the embodiment of the present invention, the following configuration can be obtained. That is,
(1) An endoscope apparatus in which a flexible drum portion capable of winding a flexible and slender endoscope insertion portion around an outer peripheral surface or feeding it from the outer peripheral surface is disposed in a box body,
The drum portion is configured to have a space inside by a plurality of outer wall portions, and a through hole is formed at the rotation center of the outer wall portion of the drum portion to communicate the inside and the outside of the drum portion,
A member that pivotally supports the drum portion via a hollow pivot shaft having one end fixed to the outer wall portion so as to cover the outer periphery of the through hole is disposed,
Inside the drum part, a heating part is arranged,
A heat pipe having one end connected to the heat generating portion and the other end connected to a member that pivotally supports the drum portion is disposed inside the drum portion and the hollow portion of the rotating shaft. An endoscope apparatus characterized by comprising:

  (2) The endoscope apparatus according to appendix 1, wherein the heat generating unit is at least one of a light source unit of the endoscope and a control unit of a camera disposed in the endoscope. .

  (3) A cooling means is disposed at a position where the other end of the heat pipe of the member that pivotally supports the drum portion is connected. Endoscopic device.

  (4) The endoscope apparatus according to appendix 3, wherein the cooling means is a heat sink or a fan.

  (5) The box is formed with at least one hole for air intake / exhaust, and at least one hole and a cooling means disposed on a member that pivotally supports the drum portion, The endoscope apparatus according to any one of appendices 1 to 4, wherein an air ventilation path that connects the two is formed.

  (6) Additional notes 1 to 5, wherein a heat pipe having one end connected to the heat generating portion and the other end connected to the outer wall portion of the drum portion is further disposed inside the drum portion. The endoscope apparatus according to any one of the above.

  (7) The endoscope apparatus according to appendix 6, wherein a cooling means is disposed at a position where the other end of the heat pipe of the outer wall portion of the drum portion is connected.

  (8) The endoscope apparatus according to appendix 7, wherein the cooling means is a heat sink or a fan.

The perspective view which fractured | ruptured and showed a part of endoscope apparatus which shows 1st Embodiment of this invention. FIG. 2 is a partially transparent perspective view showing a configuration in which a part of a drum portion and peripheral members in FIG. 1 is broken. The transparent front view of the box which shows the structure of the member arrange | positioned inside the box in FIG. The perspective view of the drum part which shows the structure of the member arrange | positioned inside the drum part of FIG. The perspective view of the drum part which shows the modification of the structure of the member arrange | positioned inside the drum part of FIG. The perspective view of the drum part which shows the modification which connected the other end of the heat pipe to the exterior of the drum part. Sectional drawing which showed the other example of a connection of the drum part in FIG. 3, and an apparatus main body. FIG. 8 is a partial perspective view of FIG. 7. Sectional drawing which showed the further example of a connection of a drum part and an apparatus main body. The perspective view which broke and showed a part of endoscope apparatus which shows 2nd Embodiment of this invention. FIG. 11 is a transparent front view of a box body showing a configuration of members disposed inside the box body in FIG. 10. The perspective front view of the box which shows the modification of the structure of the member arrange | positioned inside the box in FIG. The perspective front view of the box which shows the further another modification of the structure of the member arrange | positioned inside the box in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Endoscope apparatus 3 ... Drum part 3a ... Outer peripheral surface 3i ... Internal space 3j ... Upper surface board 3jh ... Through-hole 3k ... Lower surface board 3s ... Drum rotation center 4 ... Apparatus main body 21 ... Endoscope insertion part 31 ... Hollow rotating shaft 32 ... Light source part (heat generating part)
65 ... Air flow path restricting part 65A ... Hole 77 ... Heat sink 81 ... Box body 100 ... Heat pipe 177 ... Fan 185 ... Hole 200 ... Heat pipe 201 ... Endoscope device 277 ... Heat sink 277 ... Fan agent Patent attorney Susumu Ito

Claims (4)

An endoscope apparatus in which a flexible and slender endoscope insertion portion is wound around an outer peripheral surface or a rotatable drum portion that can be fed out from the outer peripheral surface is disposed in a box body,
The drum portion is configured to have a space inside by a plurality of outer wall portions, and a through hole is formed at the rotation center of the outer wall portion of the drum portion to communicate the inside and the outside of the drum portion,
A member that pivotally supports the drum portion via a hollow pivot shaft having one end fixed to the outer wall portion so as to cover the outer periphery of the through hole is disposed,
Inside the drum part, a heating part is arranged,
A heat transfer means having one end connected to the heat generating portion and the other end connected to a member that pivotally supports the drum portion is disposed in the drum portion and in the hollow portion of the rotating shaft. Endoscope apparatus characterized by being made.
The endoscope apparatus according to claim 1, wherein the heat generating unit is at least one of a light source unit of the endoscope and a control unit of a camera disposed in the endoscope.
The endoscope apparatus according to claim 1, wherein a cooling unit is disposed at a position where the other end of the heat transfer unit is connected.
  The endoscope apparatus according to claim 3, wherein the cooling means is a heat sink or a fan.

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