JP3579302B2 - Light source device for endoscope - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an endoscope light source device that supplies illumination light to a light guide of an endoscope.
[0002]
[Prior art]
A light source lamp used for an endoscope light source device that is inserted into a body cavity or the like and supplies illumination light to an endoscope for performing an endoscope inspection is used, for example, after using for several hundred hours, a new light source lamp is used. It will need to be replaced.
[0003]
For this reason, a normal endoscope light source device has a structure in which a light source lamp can be taken out of a lamp house and replaced with a new light source lamp. In this case, the light source lamp emits a large amount of light and generates a large amount of heat.Therefore, in order to effectively radiate the heat, the anode and the cathode of the light source lamp are attached to the heat sink, and each heat sink is attached to the heat sink. A structure in which cooling air is blown from a fan to dissipate heat is adopted. The anode and cathode portions of the light source lamp are detachably connected to an electrode member connected to a light source lamp lighting power supply circuit via a heat sink so that lighting power is supplied.
[0004]
Therefore, when replacing the light source lamp, take out the light source lamp attached to the heat sink, remove the old light source lamp, attach the new light source lamp to the heat sink, attach it to the predetermined position in the lamp house, and attach each heat sink. It is necessary to connect to the electrode member.
As a conventional example of an endoscope light source device, for example, there is one shown in FIGS. 4 and 5 of Japanese Patent Application No. 11-131386 (corresponding to Japanese Patent Publication No. 7-70850).
[0005]
In this conventional example, a rod-shaped fastening member having a cylindrical knob at one end and a male thread at the other end is inserted into each of the heat sinks on the anode and cathode sides respectively attached to the anode and cathode of the light source lamp. By turning the knob, an electrode member having a female screw portion in the lamp house is connected and fastened and electrically connected.
The positioning between the heat sink and the electrode member is performed by the positioning pin and the receiving portion.
[0006]
[Problems to be solved by the invention]
In the above conventional example, it is necessary to rotate the knob several times at the time of attachment / detachment, and when opening the lamp replacement door portion of the light source device for an endoscope and putting a finger inside to operate, the knob is rotated several times. Work becomes difficult and workability is poor.
In addition, the dimensional accuracy of the positioning pin and the receiving portion needs to be extremely high, which makes design and processing difficult.
[0007]
In the embodiment described in Japanese Patent Application No. 11-131386, in order to eliminate the latter disadvantage, a tapered block material is sandwiched between one heat sink and the knob shape. The heat sink also has a tapered surface.
[0008]
Further, a positioning projection is provided on the optical base according to the direction of the tapered surface.
Also in this prior example, it is necessary to rotate the knob several times at the time of attachment and detachment, and there is a disadvantage that workability is poor.
[0009]
As a common problem in both the prior art and the prior art, it is difficult to make the axis of the lamp horizontal when both heat sinks are in contact with the optical base (processing accuracy of each part and angular misalignment of both heat sinks). In order to avoid this problem, it is necessary to keep both heat sinks suspended in the air with positioning pins and connector parts, but there is concern about positioning accuracy and strength.
[0010]
(Object of the invention)
The present invention has been made in view of the above points, and an object of the present invention is to provide a light source device for an endoscope provided with a heat sink structure which has good workability for attachment and detachment and high positioning accuracy.
[0011]
[Means for Solving the Problems]
An endoscope light source device according to the present invention includes an illumination lamp for generating illumination light, a heat sink having a heat radiation function and holding the illumination lamp, and a rotating member rotatably provided on the heat sink. And a key-like member provided on the rotating member, and the key-like member provided on the rotating member is rotated at a predetermined angle to lock the key-like member between a keyed position and a non-keyed position. A lamp housing part having an insertion opening into which the heat sink means can be inserted, and a surface contact with the heat sink means provided in the lamp house part with the heat sink means inserted. A keyed member that engages with the key-like member when the key-like member is positioned at the key-holding position by operating the gripping means while positioning the key-like member;A lamp replacement door for replacing the lighting lamp;,A storage portion provided inside the lamp replacement door and for storing the gripping means only when the key-like member is engaged with the key-like member at the key-holding position.,
Further, the endoscope light source device includes an optical base portion having a bottom portion and a side portion forming an insertion opening of the lamp house portion.,The heat sink means is positioned by surface contact between a bottom surface and a side surface of the optical base.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First Embodiment)
1 to 8 relate to a first embodiment of the present invention. FIG. 1 shows a side portion of a main part of an endoscope light source device according to the first embodiment, and FIG. FIG. 3 shows the state in which the cathode heat sink is set in the predetermined mounting position and the state in which the cathode heat sink is set in the mounting state. 4 shows a plan view of the anode side heat sink and a front view of the anode side block, FIG. 5 shows a lamp replacement door, and FIG. 6 shows a front view, a side view, etc. of the anode side heat sink. 7 shows the structure of the anode-side electrode block, and FIG. 8 shows a rod-shaped fastening member.
[0013]
As shown in FIG. 1, in an endoscope light source device 1 according to a first embodiment of the present invention, an optical base 3 formed of an insulating member is mounted on a chassis 2, and a lamp house 4 is mounted on the optical base 3. The anode-side heat sink 6A and the cathode-side heat sink 6B in a state where the xenon lamp 5 as a light source lamp is mounted in the lamp house 4 are detachably mounted at predetermined mounting positions.
[0014]
In addition, the lamp house 4 at the portion facing the cathode side end face, which is the emission side of the emitted light in the cylindrical xenon lamp 5, is opened, and the illumination optical path (the light path) emitted from the cathode side end face of the xenon lamp 5 to the front. The illumination light of the xenon lamp 5 is provided to a light guide connector receiver (or scope receiver) 8 at a position in front of a condensing lens disposed along an optical axis (indicated by reference numeral O in FIG. 1) and a stop (not shown). And the illumination light can be supplied to the end face of the light guide 9 of the endoscope which is detachably attached to the light guide connector receiver 8.
[0015]
A rear end of the chassis 2 is connected to a lower end of a rear panel (not shown), and a top cover 10 is connected to an upper end of the rear panel. An opening is formed on one side surface of the top cover 10, and the opening is detachably covered with a lamp replacement door 11 (see FIG. 5). By removing the lamp replacement door 11, the xenon lamp 5 is removed. The anode-side heatsink 6A and the cathode-side heatsink 6B (abbreviated as a heatsink with a lamp or a lamp unit) to which are attached the anode-side electrode blocks shown in FIGS. 13A and the cathode-side electrode block 13B can be detached or attached to the opposite side.
[0016]
For example, as shown in FIG. 5, the lamp house 4 has an opening on one side (left side) on the lamp replacement door 11 side, and a heat sink with a lamp is inserted into the lamp house 4 from the lamp replacement door 11 through this opening. I am able to escape. Therefore, as shown in FIG. 1, the optical base 3 is provided with a guide groove 3A into which the bottom surface of the anode side heat sink 6A is fitted in a direction perpendicular to the optical axis O and is movable in a direction perpendicular to the optical axis O. It is.
[0017]
Then, the heat sink with the lamp is guided to the mounting position side by the guide groove 3A, and the heat sink with the lamp is inclined from the optical axis O direction by the bottom surface of the guide groove 3A and the two wall surfaces (projection surfaces) 14 projecting upward from the bottom surface. The positioning in the height direction and the positioning in the front-rear direction can be performed with high precision so as not to occur.
Further, as described later, the optical base 3 is provided with a notch 3B that does not interfere with the bottom of the cathode-side heat sink 6B in a direction orthogonal to the optical axis O.
[0018]
As shown in FIG. 5, the lamp replacement door side 11 can be removed from the side of the top cover 10 by removing two screws 15 on the lamp replacement door side.
[0019]
Also, near the right side surface of the lamp house 4 opposite to the lamp replacement door 11 side, the anode side and cathode side electrode blocks 13A, to which the terminals of the connection cable connected to the output terminal of the lamp lighting power supply circuit are connected. 13B (only 13A is shown in FIG. 5, but is shown in FIGS. 2 and 3) is positioned and fixed on the optical base 3 to stand upright.
[0020]
For example, as shown in FIG. 4 or FIG. 7, the anode-side electrode block 13A is provided with a connection portion 16 for connecting the connection cable by making the upper end of the substantially plate-shaped member L-shaped or thick. Then, as shown in FIG. 2 or FIG. 5, the upper end of the connection portion 16 is exposed in the cutout portion of the lamp house 4, thereby making it easier to connect the end portion of the connection cable.
The inside of the connecting portion 16 is cut out so that the corner of the lamp house 4 enters.
[0021]
As shown in FIG. 2, the anode-side electrode block 13 </ b> A has its base end inserted into an electrode block fixing groove 17 provided on the optical base 3. , And is fixed with screws in a state where it is positioned in surface contact with one wall surface forming the groove portion 17.
In this case, the groove 17 or the side surface 18 is parallel to the optical axis O.
[0022]
The anode-side electrode block 13A is provided with a hole 21 passing through the plate near the center thereof so that the rod-shaped fastening member 12 rotatably attached to the anode-side heat sink 6A can be inserted and removed. . The hole 21 expands in a tapered shape on the side where the tip of the rod-shaped fastening member 12 is inserted, so that the rod-shaped fastening member 12 is easily inserted, and when the rod-shaped fastening member 12 is inserted and fixed to the anode-side electrode block 13A, the rod-shaped fastening member 12 is opened. (Ring-shaped, from the anode-side heat sink 6A).
[0023]
Further, a fastening spring 22 for fastening and fixing the rod-shaped fastening member 12 is fixed to the anode-side electrode block 13A at the outlet of the hole 21 with two screws as shown in FIG. 4B. .
[0024]
The anode-side heat sink 6A is, for example, as shown in FIG. 6, in which the anode of the xenon lamp 5 is fitted into a cylindrical portion 23 having a cylindrical shape at the center portion, and radially inward in the vicinity of the longitudinal center position of the cylindrical portion 23. The xenon lamp 5 is provided with a mounting portion 24 projecting therefrom so that the end of the xenon lamp 5 on the anode side can be positioned and fixed with a screw. It has a frame structure in which the front ends are connected by a substantially square frame plate 26. Each of the plate surfaces is shaped to be parallel to the optical axis O when mounted, and a fan (not shown) blows cooling air from the direction parallel to the optical axis O to radiate heat.
The anode-side heat sink 6A has a high thermal conductivity, can be reduced in weight, and is formed of a metal member such as aluminum having good electrical conductivity.
[0025]
As shown in FIG. 2, a guide hole 27 is provided below the center of the anode-side heat sink 6 </ b> A to pass the rod-shaped fastening member 12 in a direction orthogonal to the optical axis O. A projection 28 protrudes (toward the lamp replacement door 11) from a surface of the anode-side heat sink 6 </ b> A on the base end side of the bar-shaped fastening member 12, and the projection 28 also has a hole communicating with the guide hole 27. It is provided.
[0026]
The cylindrical hole-shaped fastening member 12 is rotatably inserted into the guide hole 27. At the base end of the rod-shaped fastening member 12, a butterfly-shaped knob portion 29 for performing a rotating operation is provided, and a stopper is provided at a position slightly behind the tip. FIG. 8 shows the shape of the rod-shaped fastening member 12.
[0027]
At the tip of the rod-shaped fastening member 12, there is provided a fastening groove 31 into which a fastening spring 22 facing the outlet of the hole 21 of the anode-side electrode block 13A enters. The groove portion 31 is provided in a spiral shape. When the rod-shaped fastening member 12 is projected from the hole 21 of the anode-side electrode block 13A, the fastening spring 22 enters and the rod-shaped fastening member 12 is rotated (rotated) by 90 degrees. The fastening spring 22 bites (enters) into a deep portion and can be fastened and fixed. FIG. 4A is a plan view of the anode-side heat sink 6A and the anode-side electrode block 13A in the fixed state.
[0028]
In this fastening and fixing state, the right end surface of the anode-side heat sink 6A abuts on the end surface of the anode-side electrode block 13A by surface contact, so that the center axis of the xenon lamp 5 can be positioned so as not to be shifted in the left-right direction from the optical axis O direction. Like that.
[0029]
That is, in the present embodiment, the center axis of the xenon lamp 5 is parallel to the optical axis O direction by bringing the bottom surface of the anode-side heat sink 6A into surface contact with the bottom surface of the guide groove 3A of the optical base 3 and the both wall surfaces 14 thereof. The height direction coincides with the optical axis O so that it does not tilt, and is positioned in the front-rear direction. Further, the right end surface of the anode-side heat sink 6A is in surface contact with the end surface of the anode-side electrode block 13A, and the center of the xenon lamp 5 is moved. Positioning is performed so that the axis does not deviate from the optical axis O direction in the left-right direction, and a highly accurate positioning structure is employed in which the center axis of the xenon lamp 5 matches the optical axis O direction with a simple structure. And thislight sourceThe illumination light can be condensed and supplied to the end face of the light guide 9 of the endoscope mounted on the device 1.
[0030]
On the other hand, the cathode side heat sink 6B is similar to the anode side heat sink 6A, but as shown in FIG. 3, the xenon lamp 5 is housed in the semi-cylindrical lamp fixing recess 32 of the heat sink which is divided into approximately two equal parts. It is structured to be fixed by a connecting spring 33 and a detachable fixing mechanism 34. The cathode side heat sink 6B is also provided with a guide hole 27 through which the rod-shaped fastening member 12 is inserted, and by operating the knob 29 at the base end, the fastening groove 31 at the tip end is formed into the cathode side electrode block 13B. Can be fastened and fixed to a fastening spring 22 provided near the outlet of the hole 21 of FIG.
[0031]
Further, in the present embodiment, when the xenon lamp 5 is attached to the anode-side heat sink 6A and the cathode-side heat sink 6B, the positioning of the anode-side heat sink 6A and the cathode-side heat sink 6B around the central axis is not completed. Even if it is attached in a state, it is positioned with reference to the anode-side heat sink 6A, for example, so that even if the positioning around the central axis is not perfect, it can be mounted accurately without being affected by it.
[0032]
For this reason, a cutout 3B is provided in a portion of the optical base 3 where the cathode-side heat sink 6B is inserted into and removed from the mounting position, and the xenon lamp 5 is fixed (held) with the cathode-side heat sink 6B deviated from an optimum position. ) Does not hit the bottom surface of the optical base 3 (does not interfere).
[0033]
That is, in the state where the anode side heat sink 6A is fastened and fixed to the mounting position, the bottom surface of the anode side heat sink 6A is in contact with the bottom surface of the guide groove 3A of the optical base 3, but the cathode side heat sink 6B is lifted up from the optical base 3 and It is fastened and fixed to the side electrode block 6B.
[0034]
In this case, as shown in FIGS. 2, 4A, 5A and 5B, the anode-side electrode block 13A is mounted on the anode-side electrode block 13A so that the weight of the cathode-side heat sink 6B does not incline the anode-side heat sink 6A. Adjacently, a leaf spring 35 is provided so as to protrude to the left (on the side of the mounting position of the anode-side heat sink 6A, that is, the right side of the anode-side heat sink 6A corresponding to the position where the leaf spring 35 protrudes). A notch (or opening) 36 is provided in the surface portion, and a leaf spring 35 enters into the notch 36 in the mounted state, and a bottom side frame plate 37 adjacent to the notch 36 of the anode side heat sink 6A at the tip side. Is biased so as to press down, thereby preventing the mounted heat sink with lamp from tilting.
[0035]
Further, in the present embodiment, as shown in FIG. 5, for example, a resin insulating block 38 is provided inside the lamp replacement door 11, and the rod-shaped fastening member 12 is fastened to the insulating block 38. Only in the state, a storage groove 39 in which the knob 29 is stored is provided.
[0036]
Therefore, unless the two knobs 29 are securely set to the fastening state, the knobs 29 of the rod-shaped fastening member 12 cannot be stored in the storage grooves 39, and therefore the lamp replacement door 11 cannot be closed. ing.
[0037]
If the lamp replacement door 11 is not mounted so as to close (the opening thereof), an interlock switch (not shown) is turned off, so that the power supply of the light source device 1 cannot be turned on.
[0038]
The lamp replacement door 11 is not mounted so as to close the opening in an incompletely mounted state, thereby preventing the light source device 1 from being turned on and used.
[0039]
The operation of the endoscope light source device 1 having such a configuration will be described below.
When the xenon lamp 5 is used for an endoscope inspection for the life of the xenon lamp 5 using the endoscope light source device 1, it is necessary to replace the xenon lamp 5 with a new one.
[0040]
In this case, the lamp replacement door 11 is opened, the heat sink with the lamp is removed, and the lamp replacement door 11 is taken out. And the old keyCThe non-lamp 5 is removed from the anode side heat sink 6A and the cathode side heat sink 6B, and a new xenon lamp 5 is attached to the anode side heat sink 6A and the cathode side heat sink 6B.
[0041]
Then, as shown in FIG. 2A, the anode-side heat sink 6A is fitted and inserted into the deep side along the guide groove 3A of the optical base 3. 2A, the right end surface of the anode side heat sink 6A is brought into contact with the end surface of the anode side electrode block 13A. In this state, the fastening spring 22 is inserted into the fastening groove 31 at the tip of the rod-shaped fastening member 12, and the knob 29 at the rear end of the rod-shaped fastening member 12 near the projection 28 of the anode-side heat sink 6A is turned by 90 °. When rotated, the fastening groove 31 and the fastening spring 22 are in a fastening and fixed state.
[0042]
In this state, the bottom surface and the right side surface of the anode-side heat sink 6A are in surface contact with the optical base 3 and the anode-side electrode block 13A, and are fixed at a predetermined mounting position in a highly accurate positioning state by this surface contact.
[0043]
On the other hand, as shown in FIG. 3, the cathode side heat sink 6B can be fastened and fixed to the cathode side electrode block 13B only by rotating the knob 29 at the rear end of the rod-shaped fastening member 90 by 90 °.
[0044]
In this case, the cathode sideHiThe heat sink 6 </ b> B is fastened and fixed to the cathode-side electrode block 13 </ b> B by the notch 3 </ b> B provided in the optical base 3 without being in contact with the optical base 3.
[0045]
That is, the cathode-side heat sink (front-side heat sink) 6B is fastened and fixed on the cutout 3B of the optical base 3 so as to be electrically connected to the cathode-side electrode block 13B, and is in a state of hanging from the xenon lamp 5. .
[0046]
In this state, in the mounted state, the bottom side plate surface 37 of the anode side heat sink 6A is pressed down by the plate spring 35 as shown in FIG. 3 so that the positioning state is not affected by the weight of the cathode side heat sink 6B or the like.LikeThe elastic force acts on the surface.
[0047]
Therefore, when the heat sink with the lamp attached to the mounting position is the anode-side heat sink 6A and the cathode-side heat sink 6B, the xenon lamp 5 is inserted into the lamp house 4 with the positioning around the central axis not being perfect. In addition, the mounting can be performed by a simple operation in a highly accurate positioning state without being affected by the above.
[0048]
This embodiment has the following effects.
According to the present embodiment, the detachability of the lamp unit is good.
In other words, the structure is such that the fastening portion 29 of the rod-shaped fastening member 12 can be fastened and fixed in the mounted state and released from the fastened state by simply rotating the knob 29 by 90 °. Attachment / detachment work can be easily performed at the position.
[0049]
In addition, the lamp unit can be mounted with high positional accuracy.
That is, due to the surface contact between the anode heat sink 6A and the electrode block 13A and between the anode heat sink 6A and the optical base 3 in a wide range, a constant high accuracy can be always maintained even when the attachment and detachment are repeatedly performed.
[0050]
In addition, by providing a handle-shaped projection 28 projecting toward the lamp replacement door 11 on both heat sinks 6A and 6B, the pivoting position can be set near the opening of the lamp replacement door 11, and the work at the time of replacement is further improved. The property can be improved.
[0051]
In addition, when the knob 29 of the rod-shaped fastening member 12 is not at the proper position (the position where the heat sinks 6A and 6B are electrically attached to the electrode blocks 13A and 13B) inside the lamp replacement door 11, By providing the resin block 38 having such a shape as to cause interference, it is possible to prevent a phenomenon that the lamp lighting charge is supplied in an insufficiently mounted state.
[0052]
(Second embodiment)
Next, a second embodiment of the present invention will be described with reference to FIG. In the first embodiment, the heat sink with lamp (lamp unit) is configured to be fastened and fixed to the anode-side and cathode-side electrode blocks 13A and 13B by two rod-shaped fastening members 12, respectively. The cathode-side heat sink 6B is electrically connected to the cathode-side electrode block 13B by fastening and fixing the rod-shaped fastening member 12 provided on the anode-side heatsink 6A to the anode-side electrode block 13A as in the first embodiment. It has a structure.
[0053]
Therefore, in the present embodiment, as shown in FIG. 9, the bar-shaped fastening member 12 is not provided on the cathode side heat sink 6B (therefore, the guide hole 21 is not provided), and the left side is provided on the cathode side electrode block 13B. (Lamp replacement door 11 side) A substantially key-shaped leaf spring 41 is provided with its base end fixed with a screw so as to protrude therefrom. When the cathode side heat sink 6B is set at the mounting position, this leaf spring 41 becomes the cathode. The cathode side electrode block 13B is electrically connected to the cathode side heat sink 6B via the leaf spring 41, corresponding to the right side surface of the side electrode block 13B.
[0054]
According to the present embodiment, the same effects as those of the first embodiment can be obtained, and the lamp unit can be attached / detached by operating only the anode-side rod-shaped fastening member 12, so that the attaching / detaching operation is easier. It becomes.
The leaf spring 41 and the contact portion thereof may be plated electrically (gold, silver, rhodium, etc.), or a plate-like member that has been plated electrically may be fixed with screws (the conductivity is increased). And high durability).
[0055]
(Third embodiment)
Next, a third embodiment of the present invention will be described with reference to FIGS. FIG. 10 is a perspective view showing a main part of a fastening and fixing mechanism using a rod-shaped fastening member and an anode-side electrode block according to a third embodiment of the present invention, FIG. 11 shows the shape of the anode-side electrode block, and FIG. FIG. 4 shows a side view of the side heat sink.
[0056]
This embodiment differs from the second embodiment, for example, in the fastening and fixing mechanism.
As shown in FIG. 12, a hook-shaped projection 51 (also shown in FIG. 10) is provided at the tip of a rod-shaped fastening member 12 provided to be inserted into a guide hole of the anode-side electrode block 13A. As shown in FIGS. 10 and 11, a key-shaped hole 52 is provided through which the distal end side of the bar-shaped fastening member 12 provided with the hook-shaped projection 51 can pass.
[0057]
A groove 53 extending laterally from the hole 52 is provided on the back side surface (the right side surface when using the same expression as in the first and second embodiments) of the anode-side electrode block 13A. The hook-shaped projection 51 can be housed in the groove 53 by rotating the tip end side of the hole 12 through the hole 52 and then rotating it 90 degrees.
[0058]
As shown in FIG. 12, a coil-shaped spring 54 is provided on the base end side of the rod-shaped fastening member 12, and the hook-shaped projection 51 is moved to the base end side of the rod-shaped fastening member 12 by this spring 54. It is energizing.
[0059]
Other configurations are the same as those of the second embodiment.
[0060]
In the present embodiment, in order to set the mounting state, the distal end of the rod-shaped fastening member 12 is passed through the hole 52, and the proximal end thereof is pushed toward the distal end (against the urging force of the spring 54) so that the hook 51 is moved to the anode side. The hook 51 can be engaged with the fastening groove 53 by protruding from the back surface side of the hole 51 of the electrode block 13A and rotating, and then, by stopping the pushing, the hook is pressed by the urging force (elastic force) of the spring 54. 51 is fastened and fixed by pressing it against the bottom of the groove 53.
Further, when detaching from the mounted state, an operation reverse to the above may be performed. It is necessary to press when rotating in this way, but in other respects, it can be attached and detached by an operation of rotating by 90 ° in substantially the same manner as in the second embodiment.
[0061]
According to the present embodiment, substantially the same effects as in the second embodiment are obtained. Further, the structure of the fastening mechanism is simpler than in the case of the second embodiment, and the cost can be further reduced.
[0062]
Further, according to the present embodiment, it is easy to set the rotation angle between the state of the fastening state and the state of the released state to other than 90 °. For example, if the formation direction of the groove 53 is provided at an angle of 45 ° from the upper direction, the mounting state and the mounting release state can be set by simply rotating by 45 °.
[0063]
When a lamp whose emitted light is close to parallel light is used, it is not necessary to consider the displacement of the lamp unit in the front-rear direction very much. In this case, the positioning projection by the optical base 3 may not be provided (the positioning in the front-rear direction may be a degree of surface contact at the time of fastening with the electrode block).
[0064]
As described above, the predetermined angle at which the rod-shaped fastening member 12 is rotated to set the fastened state and the fastened state released may be other than 90 °. In this case, in consideration of operability, the angle is desirably one rotation or less.
The present invention is not limited to the heat sink shape and the direction of the cooling air described above, and the shape of the heat sink and the direction of the cooling air may be changed.
[0065]
[Appendix]
1. An illumination lamp for generating illumination light;
Heat sink means having a heat dissipation function and holding the lighting lamp,
A rotating member rotatably provided on the heat sink means,
A key-shaped member provided on the rotating member;
Gripping means provided on the rotating member, wherein the key-shaped member can be rotated between a keyed position and a non-keyed position by rotating the rotary member at a predetermined angle;
A lamp house part having an insertion port into which the heat sink means can be inserted,
When the key-shaped member is provided in the lamp house portion and is positioned in surface contact with the heat sink means in a state in which the heat sink means is inserted, and the key-shaped member is positioned at the key lock position by operating the gripping means. A keyed member engaged with the key-shaped member,
A light source device for an endoscope, comprising:
[0066]
2. An illumination lamp having a first electrode portion and a second electrode portion and generating illumination light;
A first heat sink means having a heat dissipation function and holding the first electrode of the lighting lamp;
A second heat sink means having a heat dissipation function and holding the second electrode of the lighting lamp;
A rotating member rotatably provided on at least one of the first heat sink means or the second heat sink means;
A key-shaped member provided on the rotating member;
Gripping means provided on the rotating member, wherein the key-like member can be rotated between a keyed position and a non-keyed position by rotating the rotating member by a predetermined angle;
A lamp house portion having an insertion port into which a heat sink member including the first and second heat sink means can be inserted;
A keyed member that is provided in the lamp house portion and that engages with the key-shaped member when the grip member is operated to position the key-shaped member in the key-locking position with the heat sink member inserted. Components,
A light source device for an endoscope, comprising:
[0067]
3. An illumination lamp having a first electrode portion and a second electrode portion and generating illumination light;
A first heat sink means having a heat dissipation function and holding the first electrode of the lighting lamp;
A second heat sink means having a heat dissipation function and holding the second electrode of the lighting lamp;
A first rotating member rotatably provided on the first heat sink means,
A first key-shaped member provided on the first rotating member;
The first key-like member is provided on the first rotary member, and the first key-like member is turned between a first lock position and a first non-lock position by rotating the first rotary member by a predetermined angle. First gripping means rotatable between;
A second rotating member rotatably provided on the second heat sink means,
A second key-shaped member provided on the second rotating member;
The second key-like member is provided at the second pivoting member, and the second key-like member is pivoted at a predetermined angle by rotating the second pivoting member at a predetermined angle. Second gripping means rotatable between;
A lamp house portion having an insertion opening into which a heat sink member comprising the first and second heat sink means can be inserted;
A first power supply electrode that is provided in the lamp house portion and that engages with the first heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
A second power supply electrode that is provided in the lamp house portion and that engages with the second heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
When the first key-shaped member is located at the first key-locking position by operating the first holding means in a state where the heat sink member is inserted, the first key-shaped member is provided in the lamp house portion. A first keyed member engaged with the first keyed member;
When the second key-like member is located at the second key-holding position by operating the second gripping means in a state where the heat sink member is inserted, the second key-like member is provided in the lamp house portion. A second keyed member engaged with the second keyed member;
A light source device for an endoscope, comprising:
[0068]
4. In the supplementary note 1, the positioning in surface contact with the heat sink means is positioning by surface contact between a bottom surface and a side surface forming an insertion opening of the lamp house.
[0069]
5. In an endoscope light source device having a lamp cooling heat sink,
A rod-shaped fastening member is rotatably inserted into each of the heat sinks on the cathode side and the anode side, and by rotating a rear end of the rod-shaped fastening member by a predetermined angle, a fastening portion for fastening by turning the tip is installed in the housing. A light source device for an endoscope, characterized in that it can be set to a fastening state and a release state of the fastening state at an engaging portion of the electrode block provided with the lamp lighting electrode.
[0070]
6. In Supplementary Note 5, one of the electrode blocks on either the cathode side or the anode side is simply connected to the electrode.
[0071]
7. In the supplementary note 6, a bar-shaped fastening member and a fastening structure by rotation at a predetermined angle and rotation are provided on the side of the anode and cathode heat sinks where the electrode blocks are fixed, and the heat sink on the side where the electrode blocks are not fixed is an electrode spring inside the housing. And an elastic member that presses the heat sink on the side where the rod-shaped fastening member is provided to the optical base is provided, and a gap is provided between the heat sink and the optical base.
[0072]
8. In additions 5 to 7, an insulating (resin or the like) block is provided inside the lamp replacement door, and the block is provided with a slit that does not cause interference only when the knob of the rod-shaped fastening member is at a predetermined position. .
[0073]
【The invention's effect】
According to the present invention as described above,The heat sink means for holding the lighting lamp,It can be easily attached and detached by an operation of rotating the rotating member by a predetermined angle in a high positioning state due to surface contact.Also, since the storage portion for storing the gripping means is provided inside the lamp replacement door only when the key-like member is engaged with the key-like member at the key-holding position, the engagement state can be reliably ensured. Otherwise, the lamp replacement door cannot be closed, and only when the lamp replacement door is completely closed, the heat sink means for holding the lighting lamp can be securely attached to the lamp house..
[Brief description of the drawings]
FIG. 1 is a side view showing a main part of a light source device for an endoscope according to a first embodiment of the present invention in a partial cross section.
FIG. 2 is a cross-sectional view showing a state in which an anode-side heat sink is set to a predetermined mounting position and a state in which the heat sink is set to a mounted state as viewed from the front side.
FIG. 3 is a cross-sectional view showing a state in which the cathode-side heat sink is set to a predetermined mounting position and a state in which the heat sink is set to a mounted state when viewed from the front side.
FIG. 4 is a plan view of an anode side heat sink and a front view of an anode side block.
FIG. 5 is a plan view, a front view, and a side sectional view showing a lamp replacement door.
FIG. 6 is a left side view, a front view, a right side view, and a cross-sectional view taken along a line AA of the anode-side heat sink, partially cut away.
FIG. 7 is a plan view, a front view, and a side view showing the structure of an anode-side electrode block.
FIG. 8 is a side view and a rear view showing a rod-shaped fastening member.
FIG. 9 is a cross-sectional view illustrating a state in which a cathode-side heat sink is set to a predetermined mounting position and a state in which the cathode-side heat sink is set to a mounted state when viewed from the front according to the second embodiment of the present invention.
FIG. 10 is a perspective view showing a main part of a fastening structure according to a third embodiment of the present invention.
FIG. 11 is a diagram showing a shape of an anode-side electrode block.
FIG. 12 is a side view showing an anode-side heat sink provided with a rod-shaped fastening member.
[Explanation of symbols]
1. Light source device for endoscope
2. Chassis
3. Optical base
3A: Guide groove
3B ... notch
4: Lamp house
5 xenon lamp
6A: Anode side heat sink
6B: Heat sink on the cathode side
7 ... Condensing lens
9 ... Light guide
11 ... Lamp replacement door
12 ... Bar-shaped fastening member
13A: Anode-side electrode block
13B ... Cathode side electrode block
14 ... Both wall surfaces (projection surface)
21 ... hole
22 ... fastening spring
23 ... cylindrical part
27… Guide hole
28 Projection
29 ... knob
31 ... fastening groove
35 ... leaf spring

Claims (7)

An illumination lamp for generating illumination light;
Heat sink means having a heat radiation function and holding the lighting lamp,
A rotating member rotatably provided on the heat sink means,
A key-shaped member provided on the rotating member;
Gripping means provided on the rotating member, wherein the key-shaped member can be rotated between a keyed position and a non-keyed position by rotating the rotary member at a predetermined angle;
A lamp house part having an insertion port into which the heat sink means can be inserted,
When the key-shaped member is provided in the lamp house portion and is positioned in surface contact with the heat sink means in a state in which the heat sink means is inserted, and the key-shaped member is positioned at the key lock position by operating the gripping means. A keyed member engaged with the key-shaped member,
A lamp replacement door for replacing the lighting lamp,
A storage portion provided inside the lamp replacement door, for storing the gripping means only when the key-shaped member is engaged with the keyed member at a key-locking position;
A light source device for an endoscope, comprising: An illumination lamp having a first electrode portion and a second electrode portion and generating illumination light;
First heat sink means having a heat dissipation function and holding the first electrode portion of the lighting lamp;
A second heat sink means having a heat dissipation function and holding the second electrode portion of the illumination lamp;
A rotating member rotatably provided on the first heat sink means;
A key-shaped member provided on the rotating member;
Gripping means provided on the rotating member, wherein the key-like member can be rotated between a keyed position and a non-keyed position by rotating the rotating member by a predetermined angle;
A lamp house portion having an insertion port into which a heat sink member including the first and second heat sink means can be inserted;
A keyed member that is provided in the lamp house portion and that engages with the key-shaped member when the grip member is operated to position the key-shaped member in the key-locking position with the heat sink member inserted. Components,
A lamp replacement door for replacing the lighting lamp,
A storage portion provided inside the lamp replacement door, for storing the gripping means only when the key-shaped member is engaged with the keyed member at a key-locking position;
A light source device for an endoscope, comprising: An illumination lamp having a first electrode portion and a second electrode portion and generating illumination light;
First heat sink means having a heat dissipation function and holding the first electrode portion of the lighting lamp;
A second heat sink means having a heat dissipation function and holding the second electrode portion of the illumination lamp;
A first rotating member rotatably provided on the first heat sink means,
A first key-shaped member provided on the first rotating member;
The first key-like member is provided on the first rotary member, and the first key-like member is turned between a first lock position and a first non-lock position by rotating the first rotary member by a predetermined angle. First gripping means rotatable between;
A second rotating member rotatably provided on the second heat sink means,
A second key-shaped member provided on the second rotating member;
The second key-like member is provided at the second pivoting member, and the second key-like member is pivoted at a predetermined angle by rotating the second pivoting member at a predetermined angle. Second gripping means rotatable between;
A lamp house portion having an insertion port into which a heat sink member including the first and second heat sink means can be inserted;
A first power supply electrode that is provided in the lamp house portion and that engages with the first heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
A second power supply electrode provided in the lamp house portion, wherein the second power supply electrode engages with the second heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
When the first key-shaped member is located at the first key-locking position by operating the first holding means in a state where the heat sink member is inserted, the first key-shaped member is provided in the lamp house portion. A first keyed member engaged with the first keyed member;
When the second key-like member is located at the second key-holding position by operating the second gripping means in a state where the heat sink member is inserted, the second key-like member is provided in the lamp house portion. A second keyed member engaged with the second keyed member;
A lamp replacement door for replacing the lighting lamp,
The first and second key-like members are provided inside the lamp replacement door, and the first and second key-like members are respectively engaged with the first and second key-like members at key-locking positions, respectively. And a storage unit for storing the second gripping means,
A light source device for an endoscope, comprising: An optical base portion having a bottom portion and a side portion forming an insertion opening of the lamp house portion,
2. The light source device for an endoscope according to claim 1, wherein the heat sink means is positioned by surface contact between a bottom surface and a side surface of the optical base. An optical base portion having a bottom portion and a side portion forming an insertion opening of the lamp house portion,
The light source device for an endoscope according to claim 2, wherein the first heat sink means is positioned by surface contact between a bottom surface and a side surface of the optical base. An optical base portion having a bottom portion forming an insertion opening of the lamp house portion; and an elastic member for biasing the first heat sink means against the bottom portion of the optical base portion,
6. The light source device for an endoscope according to claim 2, wherein the optical base portion is shaped so as not to interfere with the second heat sink means. A first power supply electrode that is provided in the lamp house portion and that engages with the first heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
A second power supply electrode that is provided in the lamp house portion and that engages with the second heat sink means to supply power when the heat sink member is inserted into the lamp house portion;
The light source device for an endoscope according to claim 2, wherein the second heat sink means is configured not to be fixed to the lamp house portion and to contact the second power supply electrode. .

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