WO2016170941A1

WO2016170941A1 - Endoscope

Info

Publication number: WO2016170941A1
Application number: PCT/JP2016/060422
Authority: WO
Inventors: 圭司郎新谷
Original assignee: オリンパス株式会社
Priority date: 2015-04-24
Filing date: 2016-03-30
Publication date: 2016-10-27

Abstract

This endoscope (1) includes: a manipulable section 3; a manipulable section main body 8 which has a main body space 8S that is a closed space and which is suitable for gripping by a hand; a heat source 10 which is disposed in the main body space 8S of the manipulable section main body 8; a heat sink 30 which collects the heat generated from the heat source 10 by conduction; and a cover portion 9 which has a covering space 9S that covers and surrounds the heat sink 30 and a vent 9h that connects the inside of the covering space 9S with the outside.

Description

Endoscope

This invention relates to the endoscope which provided the heat source in the space part of the operation part, or the space part of the vicinity.

In recent years, endoscopes have been used in the medical field and industrial field.

Endoscopes used in the medical field can observe the inside of the body by inserting the insertion portion into the body, which is the subject. An endoscope has a configuration in which an insertion portion and an operation portion are integrated, or a configuration in which the insertion portion and the operation portion are separable. In addition, the insertion portion includes a hard type and a soft type. In addition, there is an endoscope in which an imaging unit is provided in the insertion unit, and an endoscope in which an imaging unit is provided in the operation unit.

On the other hand, an endoscope used in the industrial field inserts a soft insertion portion into a subject jet engine, a factory piping, etc., and inspects for the presence of scratches or corrosion. Be able to.

In an endoscope having a long transmission line connecting an image pickup device provided at the distal end of the insertion portion and, for example, a video processor, a relay substrate that amplifies the signal of the image pickup device in the operation portion in order to improve image quality There is something that provided. According to this configuration, it is possible to improve the image quality while reducing the diameter of the signal cable (Japanese Patent Application Laid-Open No. 2009-279148).

In addition, regardless of the medical field or the industrial field, a battery-driven endoscope equipped with a rechargeable battery is realized as an endoscope. A battery-driven endoscope is easy to carry and can be used in places where there is no power source, so it is suitable for emergency use.

For example, Japanese Patent Application Laid-Open No. 2003-135395 discloses an endoscope apparatus in which a battery-type light source using a dry battery as a power source is detachably attached to an endoscope operation unit.

Japanese Unexamined Patent Publication No. 2006-280542 discloses an electronic endoscope in which battery power is supplied to each part of the electronic endoscope from a power supply unit controlled by a CPU. In this electronic endoscope, a configuration in which an LED light source is arranged at the distal end portion and a configuration in which the LED light source is arranged not in the distal end portion but in the operation portion and guided to the distal end portion by a light guide are shown.

However, heat is emitted from a substrate such as a relay substrate, an LED light source, and an illumination lamp. In general, the operation portion of the endoscope and the battery housing portion have a sealed space, and a heat source is provided in the sealed space. For this reason, when the endoscope is used for a long time, the heat generated from the heat source raises the temperature in the sealed space, and the surface temperature of the exterior operation unit or the battery housing surface rises. .

Further, when the surface temperature of the operation unit or the surface temperature of the battery housing unit becomes high, it may adversely affect the gripping property of the operation unit and cause a decrease in operability.

The present invention has been made in view of the above circumstances, and suppresses the temperature rise of the heat source provided in the sealed space, so that the surface temperature of the operation unit held by the hand or the surface temperature of the battery housing unit becomes high. An object of the present invention is to provide an endoscope that is excellent in operability by preventing it.

An endoscope according to an aspect of the present invention includes an insertion portion that is inserted into a subject, an operation portion that is provided on a proximal end side of the insertion portion, and a first chamber that is a sealed space, and is gripped by hand. A first exterior part that constitutes the operation unit suitable for performing, a heat source disposed in a first chamber of the first exterior part, a heat concentration part that collects heat generated from the heat source by conduction, and A second chamber that is a space surrounding the heat concentrating portion; and a second exterior portion that constitutes the operation portion having a communication path that connects the second chamber and the outside.

The figure explaining the structure of the endoscope provided with the operation part which is comprised by the 1st exterior part and the 2nd exterior part, and suppresses the temperature rise of the heat source provided in the 1st chamber. The figure explaining the other structure of the operation part which suppresses the temperature rise of the heat source provided in the 1st chamber. The figure explaining another structure of the operation part which suppresses the temperature rise of the heat source provided in the 1st chamber. The figure explaining the other structure of the operation part which suppresses the temperature rise of the heat source provided in the 1st chamber. The figure explaining the other structural example of the endoscope provided with the operation part comprised by the operation part main body which has a 1st chamber, and the cover part which has a 2nd chamber. The figure explaining the structure of the operation part which radiates the heat of the heat source provided in the first chamber to the outside from the heat radiator provided in the second chamber The figure explaining the structure which has arrange | positioned the pipe base end part of a 1st heat pipe to a 1st through-hole, and has arrange | positioned the pipe base end part of a 2nd heat pipe to a 2nd through-hole. The figure which shows the portable endoscope which a battery type light source can attach or detach freely The figure explaining the connection part of an operation part and a battery type light source The figure explaining the structure which thermally radiates the heat of the heat source provided in the first chamber from the second chamber to the outside An enlarged view for explaining an endoscope in which a battery-type light source is integrally fixed to an operation unit

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

In addition, each drawing used for the following description is shown schematically, and in order to show each component to the extent that it can be recognized on the drawing, the dimensional relationship and scale of each member are for each component. The scales are different, and the present invention is limited to the quantity of components described in these drawings, the shape of components, the ratio of the sizes of components, and the relative positional relationship of each component. It is not limited to.

As shown in FIG. 1, the endoscope 1 mainly includes an insertion portion 2 and an operation portion 3 provided on the proximal end side of the insertion portion 2.

The insertion portion 2 is configured by connecting a hard distal end portion 4 in order from the distal end side, a bending portion 5 that can be bent in the vertical direction, and a flexible tube portion 6 having flexibility.

An imaging element 7 is built in the distal end portion 4 of the insertion portion 2, and an observation window (not shown) and an illumination window (not shown) are provided on the distal end surface.

The operation unit 3 includes, for example, a resin operation unit main body 8 that is a first exterior unit including a first chamber, and a resin cover unit 9 that is a second exterior unit including a second chamber. Configured.

The operation portion main body 8 includes a grip portion formed in a shape suitable for being gripped by a user's hand, and includes an up / down knob 8a serving as a bending operation device for bending the bending portion 5,

various operation buttons

8b, 8c etc. are provided. The up / down knob 8a, the

various operation buttons

8b, 8c, and the like are operated by the user's fingers.

The operation unit main body 8 includes a main body space 8S that is a sealed space as a first chamber. In the main body space 8S, a heat source 10, a heat pipe 20 that is a heat transfer body, and a heat sink 30 that is a heat concentrating portion are disposed. Has been.

The heat source 10 is a substrate on which electronic components are mounted, or a light emitting element such as an LED light source. The heat pipe 20 has a first end and a second end. The heat source 10 is connected to a distal end portion 21 which is a first end, and a disc-shaped heat sink is connected to a proximal end portion 22 which is a second end. 30 is connected. That is, the heat source 10 is connected to the heat sink 30 via the heat pipe 20. Note that the heat source 10 may be directly connected to the heat sink 30.

The heat sink 30 has, for example, a disk shape having a first surface 31 to which the base end portion 22 is connected and a second surface 32 that is the opposite surface of the first surface 31. A fin portion (not shown) that increases the surface area and enhances the cooling effect may be provided on the second surface 32 side.

A first through hole 8h that connects the main body space 8S and the outside is formed in the base end wall surface 8w of the base end side wall portion of the operation unit main body 8. The first through-hole 8h is integrally fixed so that the outer peripheral surface of the heat sink 30 is in close contact and watertight.

The cover portion 9 has, for example, a dome shape and includes a covering space 9S as a second chamber. The cover portion 9 is provided with two or more ventilation holes 9h, which are through holes, for example, as communication paths that connect the outside and the covering space 9S.

The opening side end surface 9 f of the cover portion 9 is disposed on the outer side surface 8 o of the base end wall surface 8 w of the operation unit main body 8. In this arrangement state, the second surface 32 of the heat sink 30 is arranged in the covering space 9S.

According to this configuration, it is possible to prevent the user's finger holding the operation unit main body 8 by the cover unit 9 from erroneously touching the second surface 32 of the heat sink 30 exposed on the base end wall surface 8w. Further, since the outside and the inside of the covering space 9S are in communication with each other through the vent hole 9h, the second surface 32 of the heat sink 30 disposed in the covering space 9S is always exposed to the outside air to enter from the vent hole 9h. Be exposed.

In addition, the hole diameter of the vent hole 9h is set so as to prevent the user's fingers from directly touching the second surface 32 of the heat sink 30, that is, to prevent entry into the covering space 9S.

According to the endoscope 1 described above, part of the heat generated from the heat source 10 is conducted to the tip 21 of the heat pipe 20. Thereafter, the heat conducted to the distal end portion 21 of the heat pipe 20 is conducted from the distal end portion 21 to the proximal end portion 22.

The heat transferred to the base end portion 22 is absorbed from the first surface 31 side of the heat sink 30 and is transferred to the second surface 32 side to be dissipated. Since the second surface 32 is exposed to the outside air, heat is efficiently radiated.

As a result, the temperature rise of the heat source 10 is suppressed.

Thus, in the structure which arrange | positions the heat source 10 in the operation part main body 8 of the operation part 3, the 2nd surface 32 where the heat source 10 is exposed to external air through the heat pipe 20 or directly by the vent hole 9h. Conducted to the heat sink 30 fixed to the operation unit body 8 having

As a result, part of the heat generated from the heat source 10 is radiated to the outside from the second surface 32 of the heat sink 30 via the heat pipe 20.

Therefore, the temperature rise of the heat source 10 is suppressed, the amount of heat radiated from the heat source 10 into the main body space 8S of the operation unit main body 8 is reduced, and the occurrence of the problem that the surface temperature of the operation unit main body 8 increases to a high temperature can be prevented. .

The operation unit body 8 is configured by assembling a plurality of members (not shown) and fixing them together.

Further, the operation portion main body 8 and the cover portion 9 are configured to be detachable, and the cover portion 9 is integrally fixed to the operation portion main body 8 by, for example, a mounting screw which is a connecting member (not shown). ing. Therefore, the endoscope 1 can be cleaned and disinfected after removing the cover 9 from the operation unit body 8 by removing the mounting screws.

Further, the operation unit main body 8 and the cover unit 9 can be freely attached and detached by providing a male screw part on the outer peripheral surface of the operation unit main body 8 and a female screw part on the inner peripheral surface of the cover unit 9 or vice versa. You may make it comprise.

Referring to FIG. 2, another configuration example of the operation unit will be described.

2, the operation unit 3A includes an operation unit main body 8A and a cover unit 9A.

In the main body space 8S of the operation unit main body 8A, a heat source 10, a heat pipe 20, and a heat sink 30 are disposed. In the present embodiment, the second surface 32 of the heat sink 30 is attached and fixed to the inner surface wall 8i of the proximal end wall surface 8w. That is, the operation portion main body 8A does not require the first through hole 8h.

On the other hand, the configuration of the cover portion 9A is substantially the same as that of the above-described embodiment, and a plurality of notches 9c are provided on the opening side end face 9f instead of the vent holes 9h.

With this configuration, the notch 9c plays the same role as the vent hole 9h by attaching the cover portion 9 to the operation portion main body 8.

Other configurations are the same as those in the above-described embodiment, and the same members are denoted by the same reference numerals and description thereof is omitted.

In the present embodiment, the opening side end surface 9f of the cover portion 9A is disposed on the outer side surface 8o of the base end wall surface 8w of the operation portion main body 8A. As a result, the outer side surface 8o of the base end wall surface 8w is disposed in the covering space 9S.

According to this configuration, the outer side surface 8o of the base end wall surface 8w enters the notch 9c and is constantly exposed to the outside air to lower the temperature.

As a result, a part of the heat generated from the heat source 10 is conducted to the heat sink 30 through the heat pipe 20 or directly, and then the base end from the second surface 32 of the heat sink 30 through the interface of the inner wall 8i. Conducted to the wall surface 8w.

The conducted heat is radiated from the base end wall surface 8w by the outside surface 8o of the base end wall surface 8w being exposed to the outside air, and the temperature rise of the heat source 10 is suppressed.

Therefore, the same operation and effect as the above-described embodiment can be obtained.

Referring to FIG. 3, another configuration example of the operation unit will be described.

As shown in FIG. 3, the operation unit 3 </ b> B includes an operation unit body 8 and, for example, a cover unit 9. A heat source 10 is disposed in the main body space 8S of the operation unit main body 8, and the heat source 10 is directly attached and fixed to the inner wall 8i of the base end wall surface 8w.

Other configurations are the same as those of the embodiment shown in FIG. 1 described above, and the same members are denoted by the same reference numerals and description thereof is omitted.

In the present embodiment, the outer side surface 8o of the proximal end wall surface 8w is disposed in the covering space 9S by disposing the opening side end surface 9f of the cover portion 9 on the outer surface 8o of the proximal end wall surface 8w of the operation unit main body 8. The

According to this configuration, a part of the heat generated from the heat source 10 is directly conducted from the heat source 10 to the proximal end wall surface 8w through the interface of the inner wall surface 8i. The conducted heat is radiated from the base wall surface 8w by the outside surface 8o of the base wall surface 8w being exposed to the outside air, and the temperature rise of the heat source 10 is suppressed, and the same as in the above-described embodiment. Actions and effects can be obtained.

Referring to FIG. 4, another configuration example of the operation unit will be described.

As shown in FIG. 4, the operation unit 3 </ b> C includes an operation unit body 8 </ b> C and, for example, a cover unit 9. In the present embodiment, the heat source 10 and the heat pipe 20 are disposed in the main body space 8S of the operation unit main body 8C.

The base end wall surface 8w is provided with a pipe hole 8p which is a second through hole.

The pipe hole 8p communicates with the main body space 8S and the outside, and is integrally fixed so that the outer peripheral surface of the heat pipe 20 is in close contact with the pipe hole 8p to maintain watertightness.

According to this configuration, the base end portion 22 side of the heat pipe 20 can protrude from the outer side surface 8o of the base end wall surface 8w, and the heat sink 30 can be disposed outside the outer side surface 8o of the base end wall surface 8w.

The configuration of the cover portion 9 is substantially the same as that of the above-described embodiment. By disposing the opening side end surface 9f of the cover portion 9 on the outer side surface 8o of the base end wall surface 8w of the operation portion main body 8C, the cover portion 9 is provided in the covering space 9S. Are arranged on the base end 22 side of the heat sink 30 and the heat pipe 20.

According to this configuration, the base end portion 22 side of the heat pipe 20 protruding from the outer side surface 8o of the base end wall surface 8w and the heat sink 30 are constantly exposed to the outside air as they enter from the air holes 9h.

As a result, a part of the heat generated from the heat source 10 is conducted to the heat sink 30 through the heat pipe 20 and is radiated from the base end portion 22 of the heat pipe 20 and the heat sink 30 that are constantly exposed to the outside air. 10 temperature rise is suppressed.

Here, another configuration example of the endoscope will be described with reference to FIGS. 5A and 5B.

The endoscope of the present embodiment is, for example, a portable endoscope. As shown in FIG. 5A, the endoscope 40 is mainly configured by including an insertion portion 41 and an operation portion 42. Yes.

The insertion portion 41 is configured by connecting a rigid distal end portion 43, a bending portion 44 that can be bent in the vertical direction, and a flexible tube portion 45 having flexibility in order from the distal end side.

An imaging element (not shown) is built in the distal end portion 43 of the insertion portion 41, and an observation window (not shown) and an illumination window (not shown) are provided on the distal end surface.

The operation part 42 is an exterior part, and is composed of an operation part body 50 that is a first exterior part having a first chamber, and a cover part 60 that is a second exterior part having a second chamber. . The cover unit 60 also serves as a battery case that is detachable from the operation unit body 50.

As shown in FIG. 5B, the operation unit main body 50 includes a main body space 51 as a first chamber. In the main body space 51, a heat source 70, a heat sink 71 for heat absorption, and

heat pipes

72 and 73 as heat transfer bodies are arranged. Has been.

The heat source 70 is a substrate 74 on which electronic components are mounted, or a light source such as an LED light source 75, and heat is emitted from the substrate 74 and the LED light source 75 during endoscopic observation.

The heat-absorbing heat sink 71 is a heat-absorbing body that absorbs the heat of the substrate 74, and the heat-absorbing heat sink 71 is integrally connected to one surface side of the substrate 74 that the first heat pipe 72 faces.

The first heat pipe 72 has a first end and a second end, and a tip end portion 72a which is the first end is connected to the other surface which is the opposite surface of the one surface of the heat sink 71 for heat absorption. The second heat pipe 73 has a first end and a second end, and a tip end portion 73 a that is the first end is connected to the LED light source 75.

On the other hand, the pipe

base end portions

72 b and 73 b of the

heat pipes

72 and 73 are disposed at the base end portion 52 of the operation unit main body 50. In the present embodiment, the pipe base end portion 72 b of the first heat pipe 72 and the pipe base end portion 73 b of the second heat pipe 73 are integral.

In the arrangement state described above, the base end surfaces 72f and 73f of the pipe

base end portions

72b and 73b and the surface of the base end portion 52 are arranged in the same plane, that is, in plane matching.

On the other hand, the battery cell 62 is disposed in the cover part internal space 61 which is the second chamber of the cover part 60. The battery cell 62 is a power supply unit that supplies power to the electronic components mounted on the substrate 74 and the LED light source 75.

A heat sink 76 for heat dissipation is provided on the proximal side wall 53 of the operation unit main body 50. One surface of the heat sink 76 for heat dissipation is a contact surface 76f. The base end surface 72f of the pipe base end portion 72b of the first heat pipe 72 and the base end surface 73f of the pipe base end portion 73b of the second heat pipe 73 are in contact with the contact surface 76f.

In addition, the surface opposite to the contact surface 76f is a heat radiating surface and is provided with a plurality of fins. The side surface of the heat sink 76 for heat dissipation is integrally fixed so as to maintain watertightness in a through hole 55 provided in the proximal end wall surface 53 of the operation unit main body 50.

In addition, a plurality of ventilation holes 77 which are through-holes passing through the outside and the cover portion internal space 61 are arranged in the circumferential direction on the outer peripheral surface on the front end side of the cover portion 60.

In the present embodiment, a fixing ring (not shown) having, for example, an internal thread portion is rotatably provided in the cover portion 60, and an external thread portion is provided on the base end side outer peripheral surface of the operation portion main body 50.

The cover portion 60 and the operation portion main body 50 are integrally fixed by screwing the female screw portion of the fixing ring into the male screw portion, whereby the operation portion 42 is configured. At this time, the heat dissipation surface of the heat sink 76 for heat dissipation is covered with the cover portion 60.

According to this configuration, the outside and the inside of the cover portion internal space 61 are always in communication with each other through the vent hole 77. Therefore, the heat sink 76 for heat dissipation provided in the cover portion internal space 61 is always exposed to the outside air as it enters from the vent hole 77.

Therefore, the heat generated from the substrate 74 is absorbed by the heat sink 71 for heat absorption, then conducted to the distal end portion 72a of the first heat pipe 72, and then moves to the proximal end portion 72b.

On the other hand, the heat generated from the LED light source 75 is conducted to the distal end portion 73a of the second heat pipe 73 and then moves to the proximal end portion 73b.

Thus, in the structure which arrange | positions the heat source 70 in the operation part main body 50 of the operation part 42, the front-end |

tip parts

72a and 73a of the

heat pipes

72 and 73 are connected to the heat source 70, and the

base end parts

72b and 73b are for heat dissipation. The heat sink 76 is placed in close contact. Then, the base end side portion of the heat sink 76 for heat dissipation is disposed in the cover portion internal space 61 of the cover portion 60 having the air holes 77.

As a result, a part of the heat generated from the heat source 70 is conducted to the

end portions

72a and 73a of the

heat pipes

72 and 73, and thereafter, the heat pipe 70 is always exposed to the outside air and closely attached to the heat sink 76 for heat dissipation. It is moved to the

base end portions

72 b and 73 b, and then is absorbed by the heat sink 76 for heat dissipation and dissipated from the heat sink 76.

Therefore, the temperature rise of the heat source 70 is suppressed, the amount of heat radiated from the heat source 70 into the main body space 51 of the operation unit main body 50 decreases, and the surface temperature of the operation unit main body 50 rises to a high temperature. Can be prevented. Moreover, although the heat sink 70 becomes high temperature, a user's finger | toe does not touch a high-temperature part by being covered with the cover part 60 to which the heat sinking surface of the heat sink 70 was fixed.

The pipe base end portion 72b of the first heat pipe 72 and the pipe base end portion 73b of the second heat pipe 73 may be separate. In this configuration, instead of watertightly fixing the side surface of the heat sink 76 for heat dissipation to the through hole 54 provided in the proximal end wall surface 53 of the operation unit main body 50, the proximal end portion of the first heat pipe 72 is shown in FIG. 5C. 72b is fixed in a watertight manner to the first through hole 55 provided in the base end wall surface 53 of the operation unit main body 50, and the base end portion 73b of the second heat pipe 73 is provided in the base end wall surface 53 of the operation unit main body 50. You may fix to the 2nd through-hole 56 watertight.

Further, the

heat pipes

72 and 73 and the heat sink 76 for heat dissipation may be configured integrally. In this configuration, a base end portion (not shown) configured integrally is fixed in a watertight manner to a through hole 54 provided in the base end wall surface 53 of the operation unit main body 50.

Next, another configuration example of the endoscope will be described with reference to FIGS. 6A to 6D.

The endoscope of the present embodiment is a portable endoscope in which a battery-type light source is detachable. As shown in FIG. 6A, the endoscope 100 includes an insertion unit 101, an operation unit 102, a battery type. The light source 103 is mainly configured. Reference numeral 104 denotes an eyepiece.

The insertion portion 101 is configured by connecting a rigid distal end portion 105 in order from the distal end side, a bending portion 106 that can be bent in the vertical direction, and a flexible tube portion 107 having flexibility.

An observation window (not shown) and an illumination window (not shown) are provided on the distal end surface of the distal end portion 105 of the insertion unit 101, and an image guide fiber that transmits an observation image to the eyepiece unit 104 in the insertion unit 101. A light guide fiber (not shown) for transmitting illumination light (not shown) and illumination light is inserted and arranged.

As shown in FIG. 6B, the battery-type light source 103 is an illumination light supply unit, and is detachable with respect to the connection unit 110 provided on the side of the operation unit 102. The connection part 110 is provided with a connection base 111 and a light guide base 112, and a male screw part 113 is provided on the outer periphery of the connection base 111.

Note that one end of the light guide fiber is disposed in the light guide base 112, and the other end faces the illumination window.

As shown in FIG. 6C, the battery-type light source 103 is an exterior part, and an illumination lamp 121 and a battery (not shown) such as a dry battery or a storage battery that supplies power to the illumination lamp 121 are incorporated therein. .

Reference numeral 120 shown in FIGS. 6B and 6C is an attachment portion and is provided in the battery-type light source 103.

The mounting portion 120 is detachable from the connecting portion 110 of the endoscope 100, that is, can be attached and detached. Reference numeral 122 denotes a lamp storage unit in which the illumination lamp 121 is stored. Reference numeral 123 denotes a battery storage unit in which a battery (not shown) that supplies power to the illumination lamp 121 is stored.

The mounting portion 120 is mainly provided with a pipe-shaped mounting portion main body 124 in which the light guide base 112 is inserted and disposed, and a cylindrical female threaded portion 125 that is screwed into the male threaded portion 113 on the inner peripheral surface. An attachment ring 126 and a connection base 128 on which the attachment ring 126 is rotatably arranged are provided.

Numeral 126h is a vent hole, which is a through hole that passes through the outer periphery of the attachment ring 126 and the ring internal space 127 of the attachment ring 126. A plurality of vent holes 126 h are arranged in the circumferential direction of the mounting ring 126. The ring internal space 127 is a space that can be a second chamber.

The connection base 128 is fixed at a predetermined position on the front end side of the lamp housing tube 129. The illumination lamp 121 is disposed in the lamp housing hole 130 of the lamp housing tube 129. Reference numeral 131 denotes a lamp contact portion. The illumination lamp 121 is connected in contact with the lamp contact portion 131 and is disposed in the lamp storage space 129 </ b> S serving as a first chamber located on the distal end side of the contact portion 131.

In the present embodiment, the lamp housing cylinder 129 is a heat transfer body, and an illumination lamp 121 that is a heat source is connected to a lamp contact portion 131 provided on the first end side. The connection cap 128 is a heat radiating body and is connected to the other end of the lamp housing cylinder 129 that is the second end.

In addition, the code | symbol 132 of FIG. 6B is a power switch.

The operation of the endoscope 100 described above will be described.

When using the endoscope 100, the user attaches the attachment part 120 of the battery-type light source 103 to the connection part 110 of the operation part 102. That is, the female screw part 125 of the attachment ring 126 is screwed into the male screw part 113 provided on the connection base 111 of the connection part 110. Then, as shown in FIG. 6D, the battery-type light source 103 is integrally fixed and disposed on the operation unit 102, the light guide base 112 is engaged and disposed in the attachment main body 124, and the connection base 111 is in the ring internal space 127. Placed inside. As a result, the opening on the front end side of the ring inner space 127 is closed by the connection cap 111 or the like, and the ring inner space 127 is configured as the second chamber.

Next, the user operates the power switch 132 to turn it on. Then, the illumination lamp 121 is turned on, illumination light is supplied to the light incident end of the light guide fiber, is transmitted through the light guide fiber, and is irradiated onto the observation site from the illumination window.

The heat generated from the illumination lamp 121 is conducted from the lamp contact portion 131 to the lamp housing tube 129. The connection cap 128 disposed in the second chamber is always exposed to the outside air because the second chamber communicates with the outside through the vent hole 126h. Therefore, the heat conducted to the storage cylinder 129 is then conducted to the connection cap 128 and radiated.

Thus, in the configuration in which the illumination lamp 121 serving as a heat source is provided inside the battery-type light source 103 attached to the operation unit 102, the illumination lamp 121 is connected to the lamp contact portion 131 of the lamp housing cylinder 129, and the lamp housing cylinder is connected. The base end portion of 129 is placed in close contact with the connection base 128 arranged in the second chamber. Then, the second chamber is communicated with the outside through the vent hole 126h.

As a result, since the connection base 128 arranged in the second chamber is always exposed to the outside air, the heat generated from the illumination lamp 121 is not trapped in the lamp storage cylinder 129, and the connection base 128 is removed from the lamp storage cylinder 129. It is conducted and is dissipated.

Therefore, the heat generated from the illumination lamp 121 is conducted to the exterior parts such as the lamp housing part 122 and the battery housing part 123 of the battery-type light source 103, and the occurrence of a problem that the surface temperature rises to a high temperature can be prevented. The operation unit 102 can be prevented from being heated.

The present invention is not limited to the embodiments described above, and various modifications can be made without departing from the spirit of the invention.

In the above-described embodiment, an endoscope apparatus having an endoscope in which an insertion unit and an operation unit are integrally formed has been described. However, an imaging device that can separate the insertion unit and the operation unit and is a heat source. Can also be adopted in an embodiment having an endoscope arranged in the operation unit.

According to the present invention, the temperature rise of the heat source provided in the sealed space is suppressed, and the surface temperature of the operation unit held by the hand or the surface temperature of the battery housing unit is prevented from becoming high, and the operability is excellent. An endoscope can be realized.

This application is filed on the basis of the priority claim of Japanese Patent Application No. 2015-089706 filed in Japan on April 24, 2015. The above disclosure is included in the present specification and claims. Shall be quoted.

Claims

An operation unit having a gripper suitable for gripping by a user;
A first exterior part having a first chamber which is a sealed space and constituting the operation part suitable for gripping by hand;
A heat source disposed in the first chamber of the first exterior portion;
A heat concentration part that collects heat generated from the heat source by conduction; and
A second chamber that is a space surrounding the heat concentrating portion, and a second exterior portion that constitutes the operation portion having a communication path that connects the second chamber and the outside;
An endoscope comprising:
The heat concentrating part is a heat radiating body having a first surface and a second surface opposite to the first surface,
The heat source is connected to the first surface of the heat radiating body directly or via a heat transfer body having a first end and a second end. Endoscope.
The heat radiator is fixed in a watertight manner to a first through hole that communicates between the first chamber provided in the wall portion of the first exterior portion and the outside, and is attached to the wall portion of the first exterior portion. The endoscope according to claim 2, wherein the second surface of the radiator is exposed, and the exposed second surface is disposed in the second chamber of the second exterior portion.
In the configuration in which the outer surface of the wall portion of the first exterior portion is disposed in the second chamber of the second exterior portion,
The second surface of the radiator is attached and fixed to the inner wall of the wall of the first exterior part, and the heat collected in the radiator is further conducted to the wall of the first exterior part. The endoscope according to claim 2.
In the configuration in which the outer surface of the wall portion of the first exterior portion is disposed in the second chamber of the second exterior portion,
The heat source is attached and fixed to the inner wall of the wall portion of the first exterior portion, and heat generated from the heat source is conducted to the wall portion of the first exterior portion by conduction. The endoscope described.
In the configuration in which the heat transfer body is watertightly fixed to a second through hole that connects the first chamber and the outside provided in the wall portion of the first exterior part,
The said heat radiating body is arrange | positioned on the outer side of the wall part of the said 1st exterior part, and at least this heat radiating body is arrange | positioned in the said 2nd chamber of the said 2nd exterior part. Endoscope.
The communication path connecting the second chamber and the outside is a vent or notch, and the size of the vent or notch prevents fingers from entering the second chamber. The endoscope according to claim 1, wherein:
The endoscope according to any one of claims 2 to 7, wherein the second exterior part is detachable from the first exterior part.
The notch is provided on the opening side end face side of the second exterior part, and the notch is configured as the communication path by mounting the second exterior part on the first exterior part. The endoscope according to claim 7.
The endoscope according to claim 7, wherein the number of the vent holes is two or more.