JP2007029196A - Adaptor for endoscope and endoscope - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an adaptor for an endoscope and an endoscope which facilitate efficient radiation of heat generated at illumination units. <P>SOLUTION: The adaptor for an endoscope 17 is attached detachably to an insertion section of an endoscope. The adaptor comprises the illumination units 23 for irradiating illumination light to a subject, an observation optical system 28 for observing the subject, an outer frame 21 on which the illumination units 23 and the observation optical system 28 are arranged, an illumination support member 44 for supporting the illumination units 23, and a columnar optical support member 31 extending from the proximity of the distal end to the proximal end of the outer frame 21 for supporting the observation optical system 28. Each of the illumination support member 44 and the optical support member 31 is made of a single member, and the illumination support member 44 is attached to the optical support member 31. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an endoscope adapter and an endoscope for observing a subject.

  In recent years, in various fields such as the medical field and the industrial field, an endoscope including an insertion part that is inserted into a subject and an endoscope adapter that is detachably attached to the insertion part is used. (For example, refer to Patent Document 1). The endoscope adapter is provided with an LED for irradiating the subject with illumination light and a spherical adapter-side electrode terminal. A compression spring is provided between the LEDs and the adapter-side electrode terminal, and the adapter-side electrode terminal protrudes and appears from the rear end surface of the endoscope adapter by the compression spring. .

Here, when the LED emits light, the LED emits heat. Therefore, it is necessary to dissipate the heat in order to prevent discoloration or failure of the LED or an adverse effect on the observation image. Therefore, heat is radiated by conducting heat from the LED to the adapter side electrode and conducting from the adapter side electrode to the insertion portion.
JP 2004-341546 A

  However, in the endoscope as described above, the heat from the LED is transmitted to the adapter side electrode via the compression spring. However, the compression spring is formed by winding a metal wire in a coil shape, so that its entire length However, since the sectional area is small, the heat cannot be efficiently conducted to the adapter-side electrode portion.

  This invention is made | formed in view of such a situation, Comprising: The endoscope adapter and endoscope which can radiate | emit the heat emitted from the illumination part easily and effectively are provided. With the goal.

In order to solve the above problems, the present invention provides the following means.
An endoscope adapter according to the present invention is an endoscope adapter that is detachably attached to an insertion portion of an endoscope, and illuminates a subject with illumination light, and observes the subject. An observation optical system, an outer frame portion provided with the illumination unit and the observation optical system, an illumination support member for supporting the illumination unit, and extending from the vicinity of the distal end portion of the outer frame portion to the base end portion. A columnar optical support member that supports the observation optical system inside, and the illumination support member and the optical support member are each composed of a single member, and the illumination support member is attached to the optical support member. It is attached.

In the endoscope adapter according to the present invention, the heat generated from the illumination unit is conducted from the illumination support member to the optical support member. That is, the illumination support member and the optical support member serve as a heat dissipation path. Here, since the optical support member has a columnar shape, the total length of the heat radiation path is smaller and the cross-sectional area is larger than the spring. Furthermore, since the illumination support member and the optical support member are each composed of a single member, heat is efficiently conducted through each member.
Thereby, the heat generated from the illumination unit can be efficiently conducted to the base end side of the optical support member.

  Moreover, the endoscope adapter according to the present invention is characterized in that an elastic member having thermal conductivity is provided between the illumination support member and the optical support member.

In the endoscope adapter according to the present invention, heat generated from the illumination unit is conducted to the illumination support member, and is conducted from the illumination support member to the optical support member via the elastic member.
Here, it is difficult in manufacturing to make the surface of the illumination support member and the surface of the optical support member uniformly contact each other without a gap.
In this endoscope adapter, by interposing an elastic member, the contact area between the illumination support member and the optical support member can be increased, and heat can be conducted more efficiently.

  In addition, the endoscope adapter according to the present invention is an adhesive having thermal conductivity between the illumination support member and the optical support member and bonding the illumination support member and the optical support member. Is provided.

In the endoscope adapter according to the present invention, an adhesive is injected between the illumination support member and the optical support member, and the illumination support member and the optical support member are bonded. Then, heat generated from the illumination unit is conducted to the illumination support member, and is conducted from the illumination support member to the optical support member via the adhesive.
Thereby, by bonding the illumination support member and the optical support member with the adhesive, the contact area between the illumination support member and the optical support member can be increased, and conduction can be performed more efficiently.

  An endoscope adapter according to the present invention is an endoscope adapter that is detachably attached to an insertion portion of an endoscope, and includes an illumination unit that irradiates a subject with illumination light, and the subject. An observation optical system for observation, an outer frame portion provided with the illumination unit and the observation optical system, an illumination support unit having an illumination support member that supports the illumination unit, and a distal end portion of the outer frame unit. A columnar optical support member that extends to the end and supports the observation optical system therein, and the illumination support portion is attached to the optical support member, and the illumination support portion is attached to the outer frame portion. An opening is formed between the illumination support and the optical support member, and the heat transfer member has a higher thermal conductivity than the optical support member. Is provided.

In the endoscope adapter according to the present invention, heat generated from the illumination unit is conducted to the illumination support unit, and is conducted from the illumination support unit mainly to the heat conducting member. Then, by passing through the heat conducting member, it passes over the connection portion between the illumination supporting portion and the optical supporting member and conducts to the optical supporting member.
Thereby, the heat generated from the illumination unit can be more efficiently conducted to the base end portion of the optical support member.
The “illumination support part” may be composed of a single member, or may be composed of a plurality of members such as an illumination support member and a member that supports the illumination support member.

  The endoscope adapter according to the present invention is characterized in that the heat conducting member is formed by solidifying a liquid member injected into the opening.

In the endoscope adapter according to the present invention, a liquid member is injected into the opening and the liquid member is solidified to form a heat conducting member.
Here, since the liquid member itself can be deformed according to the space, by injecting the liquid member into the opening, the heat conducting member can be easily formed and installed according to the shape in the opening. Instead, the contact area between the illumination support portion and the heat conduction member and between the optical support member and the heat conduction member can be increased.

  In the endoscope adapter according to the present invention, an overhang groove having a larger diameter than the opening diameter of the opening is provided in the opening, and the heat conducting member is provided with the overhang groove. An overhanging portion to be fitted is provided.

In the endoscope adapter according to the present invention, when the projecting portion is fitted into the projecting groove in the opening, the heat conduction member is restricted from moving in a direction perpendicular to the radial direction of the opening. The
This prevents the heat conducting member from falling out of the opening.

  The endoscope adapter according to the present invention is characterized in that the projecting groove is formed across the illumination support part, the optical support member, and the outer frame part.

  In the endoscope adapter according to the present invention, the depth dimension of the overhang groove can be increased as much as possible without increasing the diameter of the outer frame portion, and therefore the volume of the heat conducting member can be increased. Can do. Therefore, the heat conduction efficiency can be further improved.

  An endoscope adapter according to the present invention is an endoscope adapter that is detachably attached to an insertion portion of an endoscope, and includes an illumination unit that irradiates a subject with illumination light, and the subject. An observation optical system for observation, an outer frame portion provided with the illumination unit and the observation optical system, an illumination support unit having an illumination support member that supports the illumination unit, and a distal end portion of the outer frame unit. A columnar optical support member extending to the end and supporting the observation optical system therein, and extending to either the illumination support unit or the optical support member to the other The extending portion and the other are attached to the outer frame portion by the same screw.

  In the endoscope adapter according to the present invention, since the extension part and the other are attached to the outer frame part by the same screw, rather than attaching the illumination support member and the optical support member individually, It can be assembled quickly and easily. Further, by screwing, the extension portion and the other can be more closely attached, and the heat conduction efficiency can be improved.

  The endoscope adapter according to the present invention is characterized in that the screw is made of a member having higher thermal conductivity than the optical support member.

In the endoscope adapter according to the present invention, the heat generated from the illuminating unit is conducted to the extending part through the screw and further conducted to the rear end part of the optical support member.
Thereby, not only the effect similar to the above can be produced, but also the heat conduction efficiency can be further improved.

  An endoscope according to the present invention includes the endoscope adapter according to any one of claims 1 to 9 and an insertion portion to which the endoscope adapter is detachably attached. It is characterized by providing.

  In the endoscope according to the present invention, the same effects as those of the endoscope adapter according to any one of claims 1 to 9 can be obtained.

  According to the present invention, the heat generated from the illumination unit can be efficiently conducted to the base end side of the optical support member, so that the heat generated from the illumination unit can be easily and effectively dissipated. it can.

(Embodiment 1)
Hereinafter, an endoscope according to a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows an endoscope 1 as a first embodiment of the present invention.
The endoscope 1 includes a long insertion portion 2 having a bending portion 7 that can be bent, and a main body portion 3 that is connected to the insertion portion 2 and performs various operations.

The main body portion 3 is formed in a substantially box shape, and an operation panel 6 for performing a bending operation of the insertion portion 2 is provided on a side wall portion thereof. A monitor 8 for projecting an observation image is provided on the top surface of the main body 3. Further, the main body 3 is provided with a power supply unit 11 for supplying power.
Moreover, the base end part of the insertion part 2 is connected with the main-body part 3 so that attachment or detachment is possible via the connection part not shown. On the other hand, as shown in FIG. 2, a CCD 16 as an imaging means is built in the distal end portion of the insertion portion 2. In addition, a male screw portion 12 extending over the entire circumference is formed on the outer peripheral surface of the insertion portion 2.

Further, an insertion portion side electrode terminal 13 electrically connected to the power supply portion 11 shown in FIG. An optical adapter (endoscope adapter) 17 for monocular side viewing is detachably attached to the distal end portion of such an insertion portion 2.
As shown in FIGS. 3 and 4, the optical adapter 17 includes a main body outer frame portion (outer frame portion) 21 formed in a bottomed cylindrical shape, and a mounting hood portion 22 formed in a substantially cylindrical shape. Yes. The main body outer frame portion 21 and the mounting hood portion 22 are connected to each other on the same axis and rotatably with respect to each other. The axis is the axis L of the optical adapter 17.
The main body outer frame portion 21 is formed of stainless steel or the like, and an LED (illumination portion) 23 that irradiates illumination light is provided on the side wall portion thereof. The LED 23 is attached to an LED support block (illumination support member) 44 described later.

  An observation window 26 is provided in the side wall portion of the main body outer frame portion 21 and in the vicinity of the LED 23 for capturing reflected light from the subject. Further, a columnar optical support member 31 is installed on the axis L inside the main body outer frame portion 21. The optical support member 31 extends from the vicinity of the distal end portion 42 of the main body outer frame portion 21 to the proximal end portion 43. A through hole 32 oriented in the direction of the axis L is formed at the center of the optical support member 31. The through hole 32 has a large diameter hole 33 having a larger diameter and a diameter dimension larger than that of the large diameter hole 33. The small-diameter hole 34 is small. The large diameter hole 33 is disposed on the distal end side of the optical support member 31, and the small diameter hole 34 is disposed on the proximal end side.

The large-diameter hole 33 is provided with a prism 27 that changes the traveling direction of the reflected light taken from the observation window 26 to the rear in the direction of the axis L. In addition, an observation optical system 28 is provided on the axis L behind the prism 27 (back in the direction of the axis L) and in the small diameter hole 34. That is, the observation optical system 28 is supported in the main body outer frame portion 21 by the optical support member 31.
Further, an adapter side electrode terminal 37 is provided at the rear end of the main body outer frame portion 21, and the adapter side electrode terminal 37 is electrically connected to the LED 23 via a power cable (not shown). .

The mounting hood portion 22 is formed of stainless steel or the like, and a first female screw portion 38 extending over the entire circumference is formed at the rear end portion of the inner peripheral surface thereof. Further, a second female screw portion 39 is formed at a predetermined interval from the first female screw portion 38 to the tip side.
Under such a configuration, when the distal end of the insertion portion 2 is inserted into the rear end of the optical adapter 17 and the mounting hood portion 22 is rotated, first, the male screw portion 12 and the first female screw portion 38 are screwed together. It is like that. When the mounting hood portion 22 is further rotated, the male screw portion 12 gets over the first female screw portion 38 and is screwed into the second female screw portion 39, whereby the optical adapter 17 is brought into contact with the distal end of the insertion portion 2. It is designed to be detachable. In other words, the first female screw portion 38 functions as a retainer for preventing the optical adapter 17 from falling off the insertion portion 2.

Furthermore, the LED 23 in this embodiment is supported by a solidly formed LED support block 44, and the LED support block 44 is in a block shape that fills the internal space of the distal end portion 42 of the main body outer frame portion 21. Is formed. The LED support block 44 is attached to the tip of the optical support member 31 via a joint 48.
In addition, the optical support member 31 and the LED support block 44 in the present embodiment are each composed of a single member without joining a plurality of members.
Further, an elastic member 47 having thermal conductivity is provided between the LED support block 44 and the optical support member 31 in the joint portion 48. The thickness dimension of the elastic member 47 is set larger than the gap dimension between the LED support block 44 and the optical support member 31 in the joint portion 48 in a natural state where no pressure is applied. Therefore, the elastic member 47 is elastically deformed between the LED support block 44 and the optical support member 31 and is in close contact with both.

Next, the operation of the endoscope 1 configured as described above in the present embodiment will be described.
First, the optical adapter 17 is attached to the distal end of the insertion portion 2 as described above. As a result, the adapter side electrode terminal 37 and the insertion portion side electrode terminal 13 are electrically connected, and power is supplied from the power source portion 11 to the LED 23 via a power cable (not shown). Then, the insertion unit 2 is inserted into the subject, and illumination light is emitted from the LED 23. At this time, the reflected light from the subject is taken into the optical adapter 17 through the observation window 26. The captured reflected light forms an image on the CCD 16 via the prism 27 and the observation optical system 28. Then, an output signal from the CCD 16 is sent to a predetermined circuit and further supplied to the monitor 8. As a result, an observation image is displayed on the monitor 8, and a predetermined examination of the subject is performed while viewing the observation image.

In these series of inspections, when power is supplied to the LEDs 23 and the LEDs 23 are driven, the LEDs 23 generate heat. This heat is dissipated as follows.
That is, the heat from the LED 23 is conducted to the upper end portion of the LED support block 44 in FIG. 3 and further conducted to the lower end portion of the LED support block 44. The heat conducted to the lower end portion is conducted to the front end portion of the optical support member 31 through the elastic member 47 and further conducted to the rear end portion of the optical support member 31. That is, the LED support block 44 and the optical support member 31 serve as a heat dissipation path.
Here, since the LED support block 44 is a solid block and the optical support member 31 is cylindrical, the overall length of the heat radiation path is smaller and the cross-sectional area is larger than the spring. In addition, since the LED support block 44 and the optical support member 31 are formed of a single member, heat is more easily transmitted than a plurality of members in which a plurality of members are joined.
Further, the heat conducted to the rear end portion of the optical support member 31 is conducted from the adapter side electrode terminal 37 to the insertion portion side electrode terminal 13 and further conducted to the proximal end side of the insertion portion 2. Thereby, the heat generated from the LED 23 is dissipated.

As described above, according to the endoscope 1 in the present embodiment, not only the total length of the heat dissipation path is small and the cross-sectional area is large, but also the LED support block 44 and the optical support member 31 are formed from a single component. The generated heat can be efficiently conducted from the upper end portion of the LED support block 44 to the rear end portion of the optical support member 31. Therefore, the heat from the LED 23 can be radiated easily and effectively.
Further, an elastic member 47 is provided between the LED support block 44 and the optical support member 31, and the thickness dimension of the elastic member 47 is set to be larger than the gap dimension. The contact area between the block 44 and the optical support member 31 can be increased, and heat can be conducted more efficiently.

In the present embodiment, the optical adapter 17 is used for side view, but the present invention is not limited to this, and it may be used for direct view as shown in FIG. In this case, the LED 23 is attached to a donut-shaped LED substrate (illumination support member) 49. The LED substrate 49 is composed of a single component. An adhesive 52 having thermal conductivity is provided between the LED substrate 49 and the optical support member 31, and the LED substrate 49 and the optical support member 31 are bonded to each other. The heat generated from the LED 23 is conducted from the LED substrate 49 to the optical support member 31 via the adhesive 52.
Thereby, the contact area between the LED substrate 49 and the optical support member 31 can be increased by the adhesive 52, and heat can be more efficiently conducted.
Note that either the elastic member 47 or the adhesive 52 may be provided between the LED substrate 49 and the optical support member 31. Furthermore, neither the elastic member 47 nor the adhesive 52 need be provided. For example, as shown in FIG. 6, the LED support block 44 and the optical support member 31 may be brought into direct contact with each other. Thereby, the structure of the optical adapter 17 can be simplified. However, as described above, it is preferable to provide the elastic member 47 or the adhesive 42 from the viewpoint of heat conduction efficiency.

Further, in the present embodiment, a monocular type in which the observation optical system 28 is arranged on the axis L is not limited to this, but the observation optical system is arranged along the axis L as shown in FIGS. A binocular type in which the systems 28 are arranged in two rows may be used. As shown in FIG. 9, the optical support member 31 in the case of the binocular type includes a support main body portion 54 that supports the observation optical system 28, and an outer cylinder portion 53 provided on the outer periphery of the distal end of the support main body portion 54. I have. An LED substrate 49 is attached to the front end surface of the outer cylinder portion 53. Then, the heat from the LED 23 is conducted to the adapter side electrode terminal 37 through the LED substrate 49, the outer cylinder portion 53 and the support main body portion 54.
In such a configuration, by providing the outer cylinder portion 53, even a binocular elongated optical adapter 17 can be assembled easily and quickly.

(Embodiment 2)
Next, a second embodiment of the present invention will be described.
10 and 11 show a second embodiment of the present invention.
10 and 11, the same components as those shown in FIGS. 1 to 9 are denoted by the same reference numerals, and the description thereof is omitted.
This embodiment and the first embodiment have the same basic configuration, and only the differences will be described here.

In the present embodiment, the LED 23 is attached to an LED substrate (illumination support member) 49 ′, and the LED substrate 49 ′ is attached to a solid support block 63. The LED substrate 49 ′ and the support block 63 function as an LED support portion (illumination support portion) 62 that supports the LEDs 23. That is, the LED support part 62 is composed of a plurality of members of the LED substrate 49 ′ and the support block 63.
The support block 63 is formed in a block shape so as to fill the internal space of the distal end portion 42 of the main body outer frame portion 21. The support block 63 is attached to the tip of the optical support member 31 through the joint portion 48.

In addition, an opening 57 is formed in the main body outer frame portion 21 so as to straddle the support block 63 and the optical support member 31. That is, the joint portion 48 that is a boundary line between the support block 63 and the optical support member 31 is arranged at a position that coincides with the opening 57. The opening 57 is provided with a solder portion (heat conduction member) 58 having higher heat conductivity than the support block 63 and the optical support member 31. The solder portion 58 is formed by injecting liquid solder (liquid member) into the opening 57 and solidifying the liquid solder after a predetermined time. The solder portion 58 extends over the support block 63 and the optical support member 31.
Under such a configuration, heat generated from the LED 23 is conducted to the upper end portion of the support block 63 via the LED substrate 49 ′. Further, the heat is conducted from the upper end portion of the support block 63 to the lower end portion, and is conducted mainly from the lower end portion to the solder portion 58. Then, by passing through the solder portion 58, it passes over the joint portion 48 and is conducted to the optical support member 31.

As described above, according to the endoscope 1 in the present embodiment, the heat generated from the LED 23 can be more efficiently conducted to the base end portion of the optical support member 31 by passing the solder portion 58. it can.
Further, since the solder part 58 is formed by injecting liquid solder into the opening part 57, the solder part 58 serving as a heat radiation path can be easily installed according to the shape in the opening part 57. In addition, the contact area between the support block 63 and the solder portion 58 and between the optical support member 31 and the solder portion 58 can be increased.

In the present embodiment, the solder portion 58 is used. However, the present invention is not limited to this, and a metal such as copper or aluminum or a resin having thermal conductivity such as silicon may be used.
In addition, the solder part 58 is formed by injecting liquid solder into the opening 57. However, the present invention is not limited to this, and a member formed in advance according to the shape in the opening 57 may be installed. .
Furthermore, although the LED support portion 62 made of a plurality of members is provided, instead of this, the LED support block 44 in the first embodiment made of a single member may be provided.

  Moreover, as shown in FIG. 12, the optical adapter 17 for direct viewing may be sufficient. Then, the LED substrate 49 may be attached to a donut-shaped LED case 59, and the LED case 59 may be attached to the optical support member 31. That is, the LED substrate 49 and the LED case 59 function as the LED support portion 62 ′.

(Embodiment 3)
Next, a third embodiment of the present invention will be described.
FIG. 13 shows a third embodiment of the present invention.
In the present embodiment, an overhanging groove 64 having a diameter d ₂ larger than the opening diameter d ₁ is formed in the main body outer frame portion 21 inside the opening 57. Then, liquid solder is injected into the opening portion 57 to form a solder portion 58. The solder portion 58 is formed with an overhang portion 66 projecting radially outward, and the overhang portion 66 is fitted in the overhang groove 64. That is, the opening portion 57 and the solder portion 58 have a convex shape as a whole in a side view.

With this configuration, when the solder portion 58 tries to move in a direction perpendicular to the radial direction of the opening 57 (depth direction of the opening 57), the movement is restricted by the overhanging portion 66 and the overhanging groove 64. Is done.
Thereby, not only the same effect as the invention according to the second embodiment can be obtained, but also the solder portion 58 is prevented from falling off from the opening portion 57.
In addition, since the solder portion 58 is formed by injecting liquid solder into the opening portion 57, even if the opening portion 57 has a complicated shape such as a convex shape, the solder portion is formed in the opening portion 57. 58 can be easily installed.

In the present embodiment, the optical adapter 17 is used for side view, but the present invention is not limited to this, and it may be used for direct view as shown in FIG.
Further, although the overhang groove 64 is formed in the main body outer frame portion 21, it is not limited to this, and as shown in FIG. 15, the overhang groove 64 is formed in the LED support block 44 and the optical support member 31, You may make it connect this overhanging groove | channel 64 and the opening part 57. FIG. Further, as shown in FIG. 16, an overhanging portion 66 may be formed across the LED support block 44 and the optical support member 31 and the main body outer frame portion 21. Thereby, the depth dimension h of the overhanging groove 64 can be increased as much as possible without increasing the diameter of the main body outer frame portion 21, and thus the volume of the solder portion 58 can be increased. Therefore, the heat conduction efficiency can be further improved.

  Moreover, although the opening part 57 and the solder part 58 have made the convex shape as a whole when seen from the side, it is not restricted to this, The shape etc. can be changed suitably. For example, an inclined portion that gradually decreases in diameter toward the opening end may be provided in the opening portion 57. Further, the overhanging portion 66 may be formed over the entire circumference of the opening 57 or may be formed in a part of the circumferential direction.

(Embodiment 4)
Next, a fourth embodiment of the present invention will be described.
FIG. 17 shows a fourth embodiment of the present invention.
In this embodiment, the main body outer frame portion 21 is formed with a screw opening 68 oriented in a direction orthogonal to the axis L. Furthermore, an extending portion 67 extending from the distal end surface to the LED support block 44 side along the axis L direction is integrally provided on the distal end surface of the optical support member 31. A stop hole 70 is formed in the extending portion 67 at a position corresponding to the screw opening 68. The LED support block 44 is formed with a screw hole 71 that coincides with the stop hole 70. Then, the same screw 72 is passed through the screw opening 68 and the retaining hole 70, and the screw 72 is screwed into the screw hole 71, whereby the optical support member 31 and the LED support block 44 through the extending portion 67. It is attached in the main body outer frame portion 21.

  As described above, since the optical support member 31 and the LED support block 44 are attached to the main body outer frame portion 21 with the same screw 72, the LED support block 44 and the optical support member 31 are faster than attaching them individually. And it can be assembled easily. Moreover, by screwing, the extension part 67 and the optical support member 31 can be more closely stuck, and heat conduction efficiency can be improved.

In addition, although the extended part 67 was provided in the optical support member 31, it is not restricted to this, You may make it provide the extended part extended to the optical support member 31 side in the LED support block 44. FIG.
Further, the screw 72 may be made of a member having higher thermal conductivity than the LED support block 44 and the optical support member 31. In this case, the heat generated from the LED 23 is conducted to the proximal end portion of the optical support member 31 through the LED support block 44, the screw 72, and the extending portion 67. Thereby, heat conduction efficiency can be improved further.
Furthermore, as shown in FIG. 18, the optical adapter 17 may be used for direct viewing. For example, an extending portion 67 that extends toward the optical support member 31 is provided on the rear end surface of the LED case 59. Thereby, positioning of the LED support part 62 can be performed easily, and it can assemble quickly and easily rather than attaching the LED support part 62 and the optical support member 31 separately. Moreover, by screwing, the extension part 67 and the optical support member 31 can be more closely stuck, and heat conduction efficiency can be improved.

In the second to fourth embodiments, the optical adapter 17 is a monocular type, but it may be a binocular type.
The technical scope of the present invention is not limited to the above embodiment, and various modifications can be made without departing from the spirit of the present invention.

1 is an overall configuration diagram showing a first embodiment of an endoscope according to the present invention. It is explanatory drawing which expands and shows a mode that the adapter for endoscopes is attached to the front-end | tip of the insertion part of FIG. It is a sectional side view which expands and shows the adapter for endoscopes of FIG. It is a figure which shows a mode that the adapter for endoscopes of FIG. 2 was seen from another viewpoint, Comprising: It is a perspective view which fractures | ruptures and shows a part of attachment hood part. It is a sectional side view which shows the example which applied the adapter for endoscopes of FIG. 3 as a monocular direct view type. It is a sectional side view which shows the modification of the adapter for endoscopes of FIG. It is a sectional side view which shows the example which applied the adapter for endoscopes of FIG. 3 as a binocular side view type. It is a sectional side view which shows the example which applied the adapter for endoscopes of FIG. 3 as a binocular direct-view type. It is a sectional side view which shows the modification of the adapter for binocular direct-view type endoscopes of FIG. It is a figure which shows the principal part of 2nd Embodiment of the endoscope which concerns on this invention, Comprising: It is a sectional side view which shows the adapter for endoscopes. It is a perspective view which fractures | ruptures and shows a part of endoscope adapter of FIG. It is a sectional side view which shows the example which applied the adapter for endoscopes of FIG. 10 as a monocular direct view type. It is a figure which shows the principal part of 3rd Embodiment of the endoscope which concerns on this invention, Comprising: It is a sectional side view which shows the adapter for endoscopes. It is a sectional side view which shows the example which applied the adapter for endoscopes of FIG. 13 as a monocular direct view type. FIG. 14 is a side cross-sectional view illustrating a modification example of an overhang groove or the like of the endoscope adapter of FIG. 13. It is a sectional side view which shows other modifications, such as an overhanging groove | channel of the adapter for endoscopes of FIG. It is a figure which shows the principal part of 4th Embodiment of the endoscope which concerns on this invention, Comprising: It is a sectional side view which shows the adapter for endoscopes. FIG. 18 is a side sectional view showing an example in which the endoscope adapter of FIG. 17 is applied as a monocular direct-view type.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Endoscope 2 Insertion part 17 Optical adapter (Adapter for endoscopes)
21 Body frame (outer frame)
23 LED (illumination part)
28 Observation optical system 31 Optical support member 44 LED support block (illumination support member)
47 Elastic member 49 LED substrate (lighting support member)
52 Adhesive 58 Solder Part (Heat Conductive Member)
62 LED support (illumination support)
64 Overhang groove 66 Overhang portion 67 Extension portion 72 Screw d ₁ Opening diameter

Claims (10)

An endoscope adapter that is detachably attached to an insertion portion of an endoscope,
An illumination unit for illuminating the subject with illumination light;
An observation optical system for observing the subject;
An outer frame provided with these illumination unit and observation optical system, and
An illumination support member for supporting the illumination unit;
A columnar optical support member extending from the vicinity of the distal end portion of the outer frame portion to the proximal end portion and supporting the observation optical system therein, and
The illumination support member and the optical support member are each composed of a single member,
An endoscope adapter, wherein the illumination support member is attached to the optical support member.   The endoscope adapter according to claim 1, wherein an elastic member having thermal conductivity is provided between the illumination support member and the optical support member.   2. An adhesive having thermal conductivity and adhering the illumination support member and the optical support member is provided between the illumination support member and the optical support member. The adapter for endoscopes described in 1. An endoscope adapter that is detachably attached to an insertion portion of an endoscope,
An illumination unit for illuminating the subject with illumination light;
An observation optical system for observing the subject;
An outer frame provided with these illumination unit and observation optical system, and
An illumination support unit having an illumination support member for supporting the illumination unit;
A columnar optical support member extending from the distal end portion of the outer frame portion to the proximal end portion and supporting the observation optical system inside,
The illumination support portion is attached to the optical support member,
The outer frame portion is formed with an opening spanning the illumination support portion and the optical support member. The opening extends over the illumination support portion and the optical support member, and is formed from the optical support member. An endoscope adapter, wherein a heat conductive member having high heat conductivity is provided.   The endoscope adapter according to claim 4, wherein the heat conducting member is formed by solidifying a liquid member injected into the opening. Inside the opening is provided an overhanging groove set to a larger diameter than the opening diameter of the opening,
6. The endoscope adapter according to claim 4, wherein the heat conducting member is provided with an overhanging portion that fits into the overhanging groove.   The endoscope adapter according to claim 6, wherein the projecting groove is formed across the illumination support part, the optical support member, and the outer frame part. An endoscope adapter that is detachably attached to an insertion portion of an endoscope,
An illumination unit for illuminating the subject with illumination light;
An observation optical system for observing the subject;
An outer frame provided with these illumination unit and observation optical system, and
An illumination support unit having an illumination support member for supporting the illumination unit;
A columnar optical support member that extends from the distal end portion to the proximal end portion of the outer frame portion and supports the observation optical system therein, and
Either one of the illumination support part or the optical support member is provided with an extension part extending to the other,
The extension adapter and the other are attached to the outer frame portion with the same screw.   The endoscope adapter according to claim 8, wherein the screw is made of a member having higher thermal conductivity than the optical support member. An endoscope adapter according to any one of claims 1 to 9,
An endoscope comprising: an insertion portion to which the endoscope adapter is detachably attached.

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