JP2005253511A - Endoscope device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve the maintenability by facilitating the attachment/detachment of an LED part. <P>SOLUTION: A plurality of LED bare chips 12 and electrodes 10A and 10B are mounted on a mounting base 9, and the electrodes 10A and 10B are connected to the respective LED bare chips 12 to form an LED lighting unit 8. The LED lighting unit 8 is detachably attached to an adapter body 7 retaining an endoscope lens by screws 22 and the like. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an endoscope apparatus in which an illuminating means using an LED is arranged in an insertion portion that is inserted into a lumen of an endoscopic object.

  An endoscope apparatus used for industrial use or medical use is provided with an optical system for observation or imaging at the distal end side of an insertion portion to be inserted into a lumen, and for an endoscopic object in the lumen. Illumination means for illuminating the surroundings are provided. As this illuminating means, a device that irradiates an object with light from an external light source through an optical fiber is often used. In recent years, a light emitting diode (referred to as “LED” in this specification) is used. ) Is directly attached to the insertion portion, and the periphery of the endoscopic object is irradiated by the light of the LED (for example, see Patent Documents 1 and 2).

  In the endoscope apparatus described in Patent Document 1, a plurality of LED package chips (LED bare chips are packaged together with an electrode, a phosphor layer, a sealing layer, and the like) at a front end portion of a lens holder that accommodates an endoscope lens. .) Are integrally attached, and these are fixed in a cylindrical casing at the distal end of the insertion portion.

In addition, the endoscope apparatus described in Patent Document 2 is a conductor in which a lens holder for housing an endoscope lens is assembled to an axial center portion of a ceramic insertion portion main body, and a plurality of LED package chips are attached. The layer is integrally assembled to the insert body. The conductor layer passes from the front surface side of the insertion portion main body to the rear side through the inner peripheral portion of the insertion portion main body, and is fixed by soldering to the connection terminal of the power supply unit on the rear side of the insertion portion main body.
Japanese Patent Laid-Open No. 2001-311879 JP 2002-51971 A

  However, in the former endoscope apparatus, since a plurality of LED package chips are directly attached to the lens holder, the lens holder must be removed when the LED portion is repaired or replaced. There is a problem that the assembly becomes large.

  In the latter endoscope apparatus, the conductor layer to which the LED package chip is attached extends from the front side of the insertion unit body to the rear side, and is fixed to the connection terminal of the power supply unit on the rear side of the insertion unit body. When the LED part is repaired or parts are replaced, the LED cannot be easily removed from the insertion portion main body unless the components are destroyed.

  Therefore, the present invention is intended to provide an endoscope apparatus that is easy to mount and remove the LED portion and has excellent maintainability.

  In order to achieve the above object, an endoscope apparatus according to the present invention is an endoscope apparatus in which illumination means using LEDs are provided in an insertion portion inserted into a lumen of an endoscopic object. An LED bare chip and an electrode are attached, and further, this electrode and each LED bare chip are connected to form an LED illumination unit, and this LED illumination unit is detachably attached to the insertion portion main body holding the endoscope lens. did.

  In the case of this endoscope apparatus, when repairing or replacing parts of the LED portion, the LED lighting unit is removed from the insertion portion main body, and repair and replacement of parts are proceeded in that state. Then, after completing the repair or replacement of the parts, the LED lighting unit is attached to the insertion portion main body again.

  Here, it is preferable that the soldering portion of the power supply wiring with respect to the electrode on the mounting base is disposed on the front side of the LED lighting unit in the attaching / detaching direction. When it does in this way, the soldering part of power supply wiring can be melt | dissolved from the attachment / detachment direction front side, and an LED lighting unit can be removed from an insertion part main body in the state.

  Further, in this case, a through hole along the attachment / detachment direction of the LED lighting unit is formed in the mounting base and the electrode, and a terminal portion of the power supply wiring is protruded in a direction along the attachment / detachment direction of the LED lighting unit. It is preferable that the LED lighting unit is assembled to the insertion portion main body so that the terminal portion of the power supply wiring protrudes from the terminal, and the terminal portion of the power supply wiring protruding from the through hole and the hole edge of the through hole of the electrode are soldered. In this case, when assembling the LED lighting unit, the terminal part of the power supply wiring protrudes from the mounting base and the through hole of the electrode, and in this state, the terminal part and the power source are easily soldered from the front side in the attaching / detaching direction of the LED lighting unit. Can be attached. Moreover, when removing the LED lighting unit, the solder of the terminal part of the power supply wiring is melted from the front side of the attaching / detaching direction of the LED lighting unit, and the LED lighting unit can be easily moved away from the terminal part of the power supply wiring. Can be removed.

  In addition, a cover member having a retaining portion that prevents the LED lighting unit from coming off is provided, and the cover member is detachably fixed to the insertion portion main body while the LED lighting unit is pressed by the cover member. good. In this case, since the cover member is fixed to the insertion portion main body with the cover member preventing the LED illumination unit from coming off, the LED illumination unit is not damaged or distorted due to attachment / detachment.

  Further, at this time, the cover member may be provided with a cylindrical wall, and the cylindrical wall may be screwed and fixed to the insertion portion main body. In this case, the cover member can be easily and reliably attached to and removed from the insertion portion main body without increasing the number of parts.

  When the LED lighting unit is directly fixed to the insertion portion main body, the mounting base and the insertion portion main body are provided with screw holes substantially perpendicular to the attaching / detaching direction of the LED unit, and the attachment base and the insertion portion main body. In addition, recesses between the screw holes and facing each other are provided, and a screw having a screw part provided only on the tip side is inserted from the one screw hole and screwed into the other screw hole. When the screw portion of the screw and the other screw hole are disengaged, the screw portion at the tip of the screw may be locked over the recessed portions of both the mounting base and the insertion portion main body.

  In this case, a screw is inserted into the screw hole of the mounting base and the insertion portion main body, and the screw portion of the screw is screwed into the other screw hole, whereby the LED lighting unit is fixed to the insertion portion main body. At this time, since the screw is tightened in a direction substantially orthogonal to the LED lighting unit, the LED lighting unit is reliably prevented from falling off. Also, even when the endoscope device is in use, etc., even if the screw is loosened and the screw end of the screw may come off the other screw hole, the screw end of the screw will be inserted into the mounting base at this time. The screw is positioned between the recesses of the main body, and one screw hole prevents further removal of the screw. At this time, the screw portion at the tip of the screw is locked over both the recessed portions of the mounting base and the insertion portion main body, so that the LED illumination unit is prevented from falling off.

  When the LED lighting unit is fixed to the insertion portion main body via the cover member, the cover member and the insertion portion main body are each provided with screw holes substantially perpendicular to the attaching / detaching direction of the cover member, and the cover member. In addition, the insertion part body is further provided with recesses between these screw holes and facing each other, and a screw with a screw part provided only on the tip side is inserted from the one screw hole and screwed into the other screw hole. When the screw portion of the screw tip and the screw hole of the other screw are unscrewed, the screw portion of the screw tip may be locked across the recesses of both the cover member and the insertion portion main body. .

  In this case, since the screw is tightened in a direction substantially orthogonal to the attaching / detaching direction of the cover member, the cover is reliably prevented from falling off. Also, even if the screw tightening is loosened and the screw part at the screw tip may come off from the other screw hole, at this time, the screw screw is prevented from further coming off by one screw hole, and the screw tip The screw member is locked across the cover member and the recess of the insertion portion main body, thereby preventing the cover member from falling off.

  According to the present invention, since a plurality of LED bare chips are unitized together with electrodes and are detachably attached to the insertion portion main body as LED lighting units, the attachment and detachment of the LED portions are facilitated, and the maintainability is greatly improved.

  Next, embodiments of the present invention will be described with reference to the drawings. In the following description of each embodiment, the same portions are denoted by the same reference numerals, and redundant descriptions are omitted.

First, the first embodiment shown in FIGS. 1 to 6 will be described.
FIG. 2 shows a schematic configuration of the entire endoscope apparatus according to the present invention. As shown in the figure, the endoscope apparatus has a box shape in which a lens adapter 2 is connected to a distal end side of a long flexible tube 1 and a base end of the insertion portion 3 is connected. The apparatus main body 4 is provided.

  In this endoscope apparatus, a CCD (not shown) as an imaging unit is provided in the insertion section 3, and an image signal captured by the CCD is passed through a signal line inside the flexible tube 1 and the apparatus main body section 4. The signal processed by the signal processing circuit (not shown) is displayed on the liquid crystal panel 5 as image display means as an image. The apparatus main body 4 incorporates a main power circuit (not shown) connected to a battery power source in addition to the signal processing circuit.

  The insertion portion 3 to be inserted into the lumen is provided with the lens adapter 2 on the distal end side of the flexible tube 1 as described above. More specifically, the distal end side of the flexible tube 1 is made of a hard material such as metal. The connecting plug 6 is provided, and the lens adapter 2 is detachably provided at the tip of the connecting plug 6. The above-mentioned CCD is provided at the tip of the connection plug 6 and an electrode (not shown) for supplying a current to the lens adapter 2 side is provided. In FIG. 2B, reference numeral 2A denotes a side view type replacement lens adapter.

  The lens adapter 2 shown in FIGS. 1 and 3 is a so-called direct-view type, and an objective lens group (not shown) that faces the object to be viewed and connects the image on the CCD of the connection plug 6 is axially provided. Are arranged in series. This objective lens group is accommodated in the axial center part of the adapter main body 7 shown in FIG. In this embodiment, the adapter main body 7 constitutes the insertion portion main body in the present invention. Further, the adapter body 7 has a protruding portion 7a whose diameter is reduced to a multi-stepped shape with respect to the base-side general surface, and the entire outer periphery of the protruding portion 7a is substantially a bottomed cylinder as shown in FIG. An LED lighting unit 8 having a shape is attached.

  As shown in FIGS. 1 and 3, the LED lighting unit 8 is an insulating plate-like member in which a mounting base 9 formed of a metal material having good thermal conductivity such as aluminum and a pair of electrodes 10A and 10B are embedded. 11 and a plurality of LED bare chips 12 fixed to the mounting base 9, and each LED bare chip 12 is connected to electrodes 10A and 10B by wire wiring 13 as shown in FIG. The LED lighting unit 8 is assembled in advance in another place before being assembled to the adapter body 7.

  As shown in FIG. 3, the mounting base 9 is superposed and fixed to the base body 14 in which a perforated disk-like support wall 14 a is extended on the inner surface of the cylindrical wall 14 b and the front surface of the support wall 14 a of the base body 14. The cavity member 15 is formed of an arc-shaped flat plate, and a plurality of receiving holes 16 are formed on the flat plate at equal intervals in the circumferential direction. The housing hole 16 of the cavity member 15 forms a recess portion 17 (see FIGS. 1 and 4) that opens to the front side together with the support wall 14a, and the LED bare chip 12 is disposed in each recess portion 17. It is like that. The surfaces of the base body 14 and the cavity member 15 are subjected to an insulation process such as anodizing. Further, an insulating material such as plastic may be used.

  Further, the insulating plate-like member 11 is formed in a substantially sector shape, and is adhered and fixed to a circular arc region where the cavity member 15 is not disposed on the front surface of the support wall 14a. The insulating plate member 11 has the electrodes 10A and 10B embedded in the base material made of a flexible insulating material as described above, and the front surfaces of the electrodes 10A and 10B are exposed from the outer surface of the base material. Yes.

  Here, the LED bare chips 12 attached to the attachment base 9 are arranged side by side so that the respective electrode portions face forward. The electrode portions of the LED bare chips 12 and the electrodes 10A on the insulating plate member 11 are arranged. , 10B are connected by wire bonding (wire wiring 13) on the front side thereof.

  In the case of this embodiment, each LED bare chip 12 is a blue LED or a purple LED, and a fluorescent light made of a YAG (yttrium, aluminum, garnet) -based fluorescent resin is used on the front side to obtain white light. A body layer 18 is disposed. As described above, the phosphor layer 18 disposed on the front side of each LED bare chip 12 is connected to the electrode metals 10A and 10B by wire bonding as described above. It is formed by pouring into the accommodation hole 16 (recessed portion 17) from the front side, and drying and solidifying as it is.

  Further, as shown in FIG. 6, the LED lighting unit 8 has a cylindrical wall 14 b of the base body 14 fitted into the protruding portion 7 a of the adapter body 7 from the front side in the axial direction, and in this state, is fixed detachably by screws 22. ing. Specifically, insertion holes 23 and screw holes 24 along the radial direction are respectively formed in corresponding portions of the cylindrical wall 14 b of the base body 14 and the adapter body 7, and these insertion holes 23 and screw holes 24 are formed. The LED lighting unit 8 is fixed to the adapter main body 7 by inserting the tip of the screw 22 into the screw and tightening the screw 22 from the outside.

  In addition, through holes 19, which penetrate in the plate thickness direction (the same direction as the direction in which the LED lighting unit 8 is attached / detached), are formed in the electrodes 10 </ b> A and 10 </ b> B of the insulating plate-like member 11 and the support wall 14 a of the mounting base 9. 20 (see FIGS. 3 to 6) is formed, and the terminal portion 21a of the power supply wiring 21 provided on the adapter body 7 side is drawn forward through the through holes 20 and 19, and the front side of the through hole 19 is The holes are fixed to the electrodes 10A and 10B by soldering.

  Here, as shown in FIG. 5, the terminal portion 21a of the power supply wiring 21 provided on the adapter body 7 side protrudes forward along the attaching / detaching direction (axial direction) of the LED lighting unit 8, and is supported. The through holes 20 and 19 of the wall 14a and the insulating plate-like member 11 are formed along the attaching / detaching direction as described above. When soldering and fixing the terminal portion 21a of the power supply wiring 21 to the electrodes 10A and 10B, first, the adapter main body 7 (not shown in FIG. 5) is positioned while aligning the LED lighting unit 8 as shown in FIG. At this time, as shown in FIG. 5 (B), the terminal portion 21a of the power wiring 21 is projected forward from the through holes 20 and 19 on the LED illumination unit 8 side. From this state, the LED lighting unit 8 is fixed to the adapter body 7 with the screws 22 as described above, and the terminal portion 21a of the power supply wiring 21 is connected to the hole edge on the front side of the electrodes 10A and 10B from the front side of the LED lighting unit 8. Finally, as shown in FIG. 5C, an unnecessary portion at the tip of the terminal portion 21a is cut off. In the figure, reference numeral 25 denotes a soldering portion.

  In the endoscope apparatus of this embodiment, as described above, the electrodes 10A and 10B and the plurality of LED bare chips 12 are attached to the attachment base 9 to form the LED illumination unit 8, and the adapter body 7 is a unit. Since it is assembled so as to be detachable, when the LED portion is repaired or replaced after the product is completed, the LED unit 8 and the LED unit 8 can be removed from the adapter body 7 and work can be efficiently performed outside the body 7.

That is, when removing the LED lighting unit 8 from the adapter main body 7, the screws 22 are removed from the outer peripheral side surface of the base main body 14, and the solder of the electrodes 10A and 10B is melted from the front side of the LED lighting unit 8 in that state. In this state, the LED lighting unit 8 is pulled out to the front side, and at this time, the terminal portion 21 a of the power supply wiring 21 is removed from the through holes 19 and 20.
Further, the reassembly of the LED unit 8 can be easily performed as described above.

  Therefore, in this endoscope apparatus, since the LED can be easily detached from the adapter main body 7 as a unit, the work efficiency at the time of maintenance is greatly improved, and the work efficiency at the time of shipment is also improved.

  In addition, since this endoscope apparatus is provided with the soldering portion 25 of the power supply wiring 21 on the front side in the attaching / detaching direction of the LED lighting unit 8, it is possible to easily melt or re-solder the solder during maintenance. There is also an advantage that it can be done. In particular, in this embodiment, the end portions 21a of the power supply wiring 21 are protruded forward in the attachment / detachment direction, while the through holes 19 and 20 are formed in the electrode metals 10A and 10B and the mounting base 9 along the attachment / detachment direction. Therefore, a series of operations such as melting of the solder and detachment of the LED lighting unit 8 can be efficiently performed, and the LED lighting unit 8 can be easily soldered.

  In the first embodiment, the insertion hole 23 is formed in the cylindrical wall 14b of the mounting base 9, and the screw hole 24 is formed in the protruding portion 7a of the adapter body 7. However, the second embodiment shown in FIG. As in the embodiment, the cylindrical wall 14b of the mounting base 9 and the protruding portion 7a of the adapter body 7 are respectively formed with screw holes 30 and 31 along the radial direction, and the inner peripheral surface of the cylindrical wall 14b and the protruding portion 7a. It is also possible to form indentations 32 and 33 opposite to each other between the screw holes 30 and 31 on the outer peripheral surface, and to screw them together with a screw 34 having a screw portion 34a only at the tip.

  In the case of the second embodiment, the screw 34 is screwed into the screw hole 30 on the mounting base 9 side and finally screwed into the screw hole 31 on the adapter main body 7 side. At this time, the mounting base 9 is detachably fixed by the screw 34 as in the first embodiment, but the screw portion 34a at the tip of the screw, the recessed portions 32 and 33, the screw hole 31 on the mounting base 9 side, and the like. The LED lighting unit 8 functions as a drop-off prevention unit as follows.

  That is, in this endoscope apparatus, since the screws 34 are screwed in from a direction substantially perpendicular to the attaching / detaching direction of the LED illumination unit 8, the LED illumination unit 8 is unlikely to drop out originally, but it is unlikely to be used over time. Even if the screw 34 is loosened, the screw part 34a at the tip of the screw stays on the cylindrical wall 14b and the depressions 32 and 33 of the protrusion 7a, and at this time, the screw part 34a is in both depressions. By being locked to the walls 32 and 33, the LED lighting unit 8 is reliably prevented from falling off. When the screw portion 34a at the tip of the screw is displaced between the recess portions 32 and 33, the screw portion 34a is prevented from coming off by the screw hole 30 of the cylindrical wall 14b.

  Further, in the above, a screw having a head is used as means for fixing the LED lighting unit 8 to the adapter main body 7 in a detachable manner. However, as in the third embodiment shown in FIG. The LED lighting unit 8 and the adapter main body 7 may be fixed by a screw (hereinafter referred to as “芋 screw 40”). That is, in the third embodiment, the insertion hole 41 of the male screw 40 and the locking recess 42 are formed coaxially in the cylindrical wall 14b of the LED lighting unit 8, while the insertion hole 41 is formed on the adapter body 7 side. A screw hole 43 that coincides with the shaft center is formed, and the screw 40 is screwed into the screw hole 43 of the adapter body 7 from the insertion hole 41 of the cylindrical wall 14b, and the distal end and the base end of the screw 40 are engaged with the locking recess 42. The LED illumination unit 8 is fixed to the adapter body 7 by engaging with the insertion hole 41. As a means for detachably fixing the LED lighting unit 8, a spring pin 50 can be used as in the fourth embodiment shown in FIG.

Next, a fifth embodiment shown in FIGS. 10 to 12 will be described.
The endoscope apparatus of this embodiment is greatly different from that of the above-described embodiment in that the LED illumination unit 108 is detachably fixed to the adapter main body 107 via a substantially cylindrical cover member 60. . More specifically, the shape of the mounting base 109 of the LED lighting unit 108 is also slightly different, and the base body 114 of the mounting base 109 is formed in a perforated disk shape so that it can be accommodated in the cover member 60. The cover member 60 has an inward flange 60b extending at one end of the cylindrical wall 60a, and a thread groove (not shown) is cut on the inner peripheral surface of the other end. The inward flange 60b constitutes a retaining portion that prevents the LED illumination unit 108 from being detached. Further, the other end portion of the cover member 60 is directly tightened and fixed to a screw portion 61 formed on the outer peripheral surface of the adapter main body 107.

  The endoscope apparatus of this embodiment can basically obtain the same operational effects as those of the other embodiments described above, but instead of directly fixing the LED illumination unit 108 to the adapter main body 107, the cover member 60 is provided. Since it is fixed to the adapter main body 107 while being pressed down by the inward flange 60b, there is a further advantage that it is difficult to cause damage or distortion associated with the attachment or detachment of the LED illumination unit 108 or the like.

  In the case of this embodiment, since a thread groove is formed in the cylindrical wall 60a of the cover member 60, and this cylindrical wall 60a is directly screwed and fixed to the adapter main body 107, the cover member 60 is detachably fixed. Therefore, there is an advantage that a separate part such as a screw is not required, the number of parts is reduced, and workability at the time of disassembling and assembling is improved.

  Here, the embodiment has been described in which a screw groove is formed in the cylindrical wall 60a of the cover member 60 and screwed directly into the adapter main body 107. However, the adapter is attached with a screw or the like from a direction substantially perpendicular to the attaching / detaching direction of the cover member. You may make it fix to a main body. Further, at this time, screw holes and recesses similar to those of the embodiment shown in FIG. 7 are formed on the side surfaces of the cover member and the adapter main body, respectively, and the cover member and the adapter main body are connected by screws having a screw portion only at the tip. You may make it screw. In this case as well, when the screw portion at the tip of the screw is removed from the other screw hole, the cover member can be more reliably prevented from falling off if the screw portion is locked across the two recessed portions. It becomes possible.

  FIGS. 13 and 14 show a sixth embodiment of the present invention. An endoscope apparatus according to this embodiment is obtained by applying the basic structure according to the present invention to a side-view type lens adapter 202. FIG. . In this apparatus, a step surface 70 is provided on the side surface of the tip of the adapter main body 207, and an imaging window 71 and an LED illumination unit 208 are arranged in parallel on the step surface 70.

  In the LED illumination unit 208, the mounting base 209 is configured by the base main body 214 and the cavity member 215 as in the first embodiment. The base main body 214 is formed in a substantially rectangular shape in plan view. The tongue piece 72 is bent at one end side. And as shown in FIG. 14, the cavity member 215 overlapped and fixed to the front surface of the base main body 214 is formed in a substantially rectangular shape as a whole, and square cutouts 73 are respectively formed at the centers of the opposing long sides. A rectangular insulating plate-like member 211A, 211B is disposed at each notch position. Each of the insulating plate-like members 211A and 211B has electrodes 10A and 10B, respectively, and each of the electrodes 10A and 10B is fixed to the terminal portion 21a of the power supply wiring 21 by soldering. In addition, the connection structure of the power supply wiring 21 and the electrodes 10A and 10B, the point that the LED bare chip 12 is disposed in the accommodation hole 16 of the cavity member 215, and the LED bare chips 12 are connected to the electrodes 10A and 10B by wire bonding. The point which the fluorescent substance layer 18 (refer FIG. 13) is provided in the front surface of each LED bare chip 12, etc. is the same as that of 1st Embodiment.

  The stepped surface 70 of the adapter main body 207 is provided with a substantially rectangular recess 74 into which the LED lighting unit 208 is fitted, and an insertion hole 75 communicating with the recess 74 is formed on the front end surface of the adapter main body 207. Is provided. In this embodiment, the direction substantially orthogonal to the step surface 70 is the attaching / detaching direction of the LED lighting unit 208, and the tongue piece 72 of the mounting base 209 is coaxial with the insertion hole 75 when assembled to the adapter body 207. A screw hole 76 is provided. In the case of this embodiment, the screw 22 is fastened to the screw hole 76 of the mounting base 209 through the insertion hole 75 in a state where the LED illumination unit 208 is fitted in the recess 74 of the adapter main body 207.

  The endoscope apparatus of this embodiment is different from the first embodiment in shape, but can obtain substantially the same operational effects.

  Note that the screw fixing portions of the adapter main body 207 and the LED lighting unit 208 can adopt the same structure as that of the embodiment shown in FIG. Further, as in the seventh embodiment shown in FIG. 15, a screw hole 90 is provided at the front end portion of the adapter main body 207, and a screw member 91 such as a male screw is screwed into the screw hole 90. The LED lighting unit 208 may be pressed and fixed. Furthermore, when fixing the LED lighting unit 208 more reliably, a concave portion 92 and a convex portion 93 are formed on the tip surface of the screw member 91 and the end surface of the LED lighting unit 208 as in the eighth embodiment shown in FIG. May be formed, and the LED illumination unit 208 may be pressed and fixed by the screw member 91 so that the peripheral area of the projection 93 of the LED illumination unit 208 is surrounded by the recess 92.

  FIGS. 17 and 18 show a ninth embodiment of the present invention. The endoscope apparatus of this embodiment employs a side-view type lens adapter 302 similar to that of the sixth embodiment, but the LED illumination unit 308 disposed in the recess 74 is a front end of the adapter main body 308. It is fixed via a half-cylindrical cover member 360 that covers the part. The cover member 360 is provided with a window 81 that is slightly smaller than the size of the LED illumination unit 308 on a half surface 80 corresponding to the stepped surface 70 of the adapter main body 308, and an edge 81 a of the window 81 is an LED illumination unit 308. It serves as a retaining part that prevents the slipping out of the body. The window 81 may be provided with a cover glass. The cover member 360 is screwed and fixed to the adapter main body 308 with screws 22.

Although the endoscope apparatus of this embodiment is different in shape from the fifth embodiment, substantially the same operational effects can be obtained. In the case of this embodiment as well, the screw fixing portions of the cover member 360 and the adapter main body 308 can adopt the same structure as that of the embodiment shown in FIG.

  The embodiments of the present invention are not limited to those described above. For example, each of the above-described embodiments is an endoscope apparatus of a type that displays an image captured by a CCD on an image display means such as a liquid crystal panel. However, it may be an endoscope apparatus in which an observer directly looks into an image captured by an objective lens group from an eyepiece through an image guide such as an optical fiber.

The disassembled perspective view of the principal part which shows 1st Embodiment of this invention. The figure which combined the perspective view (A) which shows the whole schematic structure of the endoscope apparatus of the embodiment, and the perspective view (B) of a front-end | tip part. The disassembled perspective view of the LED lighting unit of the embodiment. The front view of the LED lighting unit of the embodiment. Sectional drawing which shows the soldering process of the embodiment. The longitudinal cross-sectional view which shows the lens adapter of the embodiment. Partial sectional view showing a second embodiment of the present invention The cross-sectional view which shows the 3rd Embodiment of this invention. The cross-sectional view which shows 4th Embodiment of this invention. The disassembled perspective view which shows 5th Embodiment of this invention. The disassembled perspective view which shows the same embodiment. The longitudinal cross-sectional view which shows the same embodiment. The disassembled perspective view which shows 6th Embodiment of this invention. The disassembled perspective view which shows the same embodiment. The fragmentary sectional view which shows 7th Embodiment of this invention. The fragmentary sectional view which shows 8th Embodiment of this invention. The disassembled perspective view which shows the 9th Embodiment of this invention. The disassembled perspective view which shows the same embodiment.

Explanation of symbols

7, 107, 207, 307 Adapter body (insertion unit body)
8, 108, 208, 308 LED lighting unit 9, 109, 209 Mounting base 10A, 10B Electrode 12 LED bare chip 19, 20 Through hole 21 Power supply wiring 25 Soldering part 30, 31 Screw hole 32, 33 Recessed part 34 Screw 34a Screw Part 60 Inward flange (Retaining part)
81a Edge (Retaining part)

Claims (7)

In an endoscope apparatus in which an illuminating means by an LED is provided in an insertion portion to be inserted into a lumen of an endoscopic object,
A plurality of LED bare chips and electrodes are attached to the mounting base, and the electrodes and each LED bare chip are connected to form an LED illumination unit, and this LED illumination unit is attached to and detached from the main body of the insertion portion holding the endoscope lens. An endoscope apparatus characterized by being attached in a possible manner.   The endoscope apparatus according to claim 1, wherein a soldering portion of the power supply wiring with respect to the electrode on the mounting base is disposed on the front side of the LED illumination unit in the detaching direction.   A through hole is formed in the mounting base and the electrode along the attaching / detaching direction of the LED lighting unit, and a terminal portion of the power supply wiring is projected in a direction along the attaching / detaching direction of the LED lighting unit. The LED lighting unit is assembled to the insertion portion main body so that the portion protrudes, and the terminal portion of the power supply wiring protruding from the through hole and the hole edge of the through hole of the electrode are soldered. The endoscope apparatus described.   A cover member provided with a retaining portion for preventing the LED illumination unit from coming off is provided, and the cover member is detachably fixed to the insertion portion main body in a state where the LED illumination unit is pressed by the cover member. The endoscope apparatus according to any one of Items 1 to 3.   The endoscope apparatus according to claim 4, wherein the cover member is provided with a cylindrical wall, and the cylindrical wall is screwed and fixed to the insertion portion main body.   The mounting base and the insertion portion main body are provided with screw holes that are substantially orthogonal to the attaching / detaching direction of the LED unit, and the mounting base and the insertion portion main body are further provided with recesses that face each other between the screw holes. When a screw having a thread portion provided only on the tip side is inserted from the one screw hole and screwed into the other screw hole, and the screw portion of the screw tip and the other screw hole are unscrewed, The endoscope apparatus according to any one of claims 1 to 3, wherein a screw portion at a screw tip is locked across a recess portion of both the mounting base and the insertion portion main body. The cover member and the insertion portion main body are each provided with screw holes that are substantially perpendicular to the attaching / detaching direction of the cover member, and the cover member and the insertion portion main body are further provided with recessed portions that face each other between these screw holes. When a screw having a threaded portion provided only on the tip side is inserted from the one screw hole and screwed into the other screw hole, and the screwed portion of the screw tip and the other screw hole are disengaged, The endoscope apparatus according to claim 4, wherein a screw portion at a screw tip is engaged with both recesses of the cover member and the insertion portion main body.

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