JPH1031163A - Optical microscope device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make impossible replacement of lamp until the temperature in a lamp house body drops to a temperature at which the hand is touched with their hand without hindrance. SOLUTION: Between the lamp house body 1 having a lighting mechanism in which a light source unit 15 is constituted attachablly/detachablly upward via a hinge 14 to the lamp house body 1, and the movable part 2a of a lid 2, one end of a lock member 11 formed of shape memory alloy is fixed on the inside surface of the lid 2 side and another end is disengaged so that the shape of the disengaged end is changed by thermal change. Thus, a locking mechanism is provided that when a temperature in the lamp house body 1 is higher than a reference value, the part changed in shape catches the inside surface of the lamp house body 1, while when lower than the reference value, the shape returns to an original shape and releasing the lock.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an optical microscope apparatus in which a light source unit can be inserted into and removed from a lamp house for replacing a light source lamp.

[0002]

2. Description of the Related Art Conventionally, as an example of this type of optical microscope apparatus, there has been known a device disclosed in Japanese Utility Model Publication No. 7-20649. As shown in FIG. 7 (a cross-sectional view showing a basic configuration), the optical microscope apparatus of the present invention has a light source unit 20.
Can be inserted into and removed from the lamp house 1.

In this case, the light source unit 20 includes a lid 2 to which the handle 3 is fixed, a support frame 4 fixed to the inner surface of the lid 2,
The lamp 5 attached to the support frame 4 is attached to the inner surface of the lid 2 and is connected to the socket 6 via the lead wire 8 and the lid 2 is automatically connected to a power connector (not shown) on the lamp house main body 1 side. And a connector 7 connected to the

On the other hand, a support frame 9 is fixed to the inner surface of the lamp house main body 1 side, and a light guide 10 is attached to the support frame 9. The end face 10a of the light guide 10 is located at a position facing the lamp 5 when the light source unit 20 is inserted into and fixed to the lamp house main body 1, and the light emitted from the lamp 5 is applied to the end face of the light guide 10 to emit the light. Is transmitted via a light guide 10 to an illumination system of an optical microscope device (not shown).

When replacing the lamp 5 in this apparatus, the light source unit 20 which has been used is pulled out from the lamp house main body 1 and a spare light source unit whose lamp replacement has been completed is inserted instead. It is made to let. However, since it is expensive to prepare a spare light source unit for replacement, usually, the currently used light source unit 20 is pulled out from the lamp house main body 1, and
After replacing the disconnected lamp, the light source unit 20 is inserted into the lamp house main body 1 again to make up for one light source unit 20 in time.

In order to prevent the light source unit 20 pulled out from the lamp house main body 1 from being lost or damaged, a hinge 14 connects one side of the light source unit 20 to the lamp house main body 1 as shown in FIG. By connecting and opening the lid 2 via the hinge 11, the light source unit 20 is opened.
May be exposed from the lamp house body 1. Therefore, in this case, since the light source unit 20 and the lamp house main body 1 are connected to each other via the hinge 14 and cannot be separated, there is no possibility that the light source unit 20 is lost.

In this apparatus, when the light source unit 20 is inserted into the lamp house main body 1 and the movable portion of the lid 2 and the lamp house main body 1 are fixed to each other with fixing screws 12 when the lamp 5 is replaced. In this case, the fixing screw 12 is removed, and the light source unit 20 can be turned around the hinge 14 so that the light source unit 20 can be exposed outside the lamp house body 1.

[0008]

When the lamp 5 is disconnected during use, the user needs to touch the lamp to replace the lamp. Immediately after the disconnection, the lamp and its surroundings become hot. In this state, the user wears gloves, opens the lid 2, and takes out the light source unit 20. Alternatively, it is conceivable to wait until the temperature drops, but there is a problem that it is not known how long the temperature should be waited. Alternatively, it is conceivable to replace the lamp 5 using tweezers or the like, but with tweezers there is a possibility that the glass tube constituting the lamp may be damaged.

Particularly, in the invention disclosed in Japanese Utility Model Publication No. 7-20649, the above-mentioned problem can be avoided by preparing a spare light source unit 20, but the provision of a spare lamp group is not a large scale. However, there is a problem that it is difficult to adopt a microscope of a widespread class because of its large scale and high cost. Further, it is conceivable to prepare a dedicated replacement tool that can be replaced without directly touching the lamp, but there is a problem that attaching the dedicated tool to each microscope increases costs.

Therefore, the present invention has been made in view of the above-mentioned problems, and has a configuration in which the lamp cannot be replaced until the temperature of the lamp house main body is reduced to a temperature that does not cause any trouble even if the hand is touched. The purpose is to provide.

[0011]

According to a first aspect of the present invention, there is provided an optical microscope apparatus in which a light source unit can be inserted into and removed from a lamp house. When the temperature inside the lamp house is higher than the specified value, the movable part of the light source unit is locked to the lamp house side, and when the temperature inside the lamp house is lower than the specified value, the lock mechanism is released. It is characterized by the following. As a result, the lamp cannot be replaced until the temperature inside the lamp house drops to a temperature at which it can be touched.

According to a second aspect of the present invention, as the lock member constituting the lock mechanism, a material that changes its shape by a change in temperature is used, and the lock mechanism can be opened and closed by the change in shape.

As a material which changes its shape due to the above-mentioned temperature change, for example, a shape memory alloy is known. A lock member is formed using this shape memory alloy, and the portion in which the shape has changed utilizing the change in shape of the lock member due to a change in temperature is configured to open and close the lock mechanism. When it rises above the prescribed value, the deformed portion of the shape memory alloy is hooked and locked on the lamp house main body side, and the light source unit cannot be taken out from the lamp house main body.

Further, when the temperature in the lamp house falls below a predetermined value, the lamp house is deformed and returns to its original shape, the hook is released, the lock is released, and the light source unit can be taken out of the lamp house body. Become. In other words, it is a notification that the interior of the lamp house is at a high temperature while the lamp is locked, and it is understood that the temperature has dropped to a temperature at which the lamp can be replaced with bare hands when the lock is released. The light source unit in the optical microscope device can be inserted or removed by rotating the light source unit via a hinge to expose the light source unit without separating it from the lamp house, or by pulling the light source unit out of the lamp house and removing the lamp. There is a type that is exposed by completely separating from the house.

[0015]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to the drawings. In each of the embodiments, common points are assigned the same reference numerals and correspond to each other to omit redundant description.

(Embodiment 1) FIGS. 1 to 3 show Embodiment 1 of the present invention. FIG. 1 is a sectional view showing an illumination mechanism of an optical microscope apparatus, and FIGS. It is operation | movement explanatory drawing seen from the side.

As shown in FIG. 1, the illumination mechanism of the optical microscope apparatus according to the present embodiment is configured so that the light source unit 15 can be inserted into and removed from the lamp house body 1 upward. , Lid 2 to which handle 3 is fixed
And a support frame 4 fixed to the inner surface thereof, a lamp 5 mounted on the support frame 4, and a lamp mounted on the inner surface of the lid 2 and connected via a socket 6 and a lead wire 8. It comprises a power supply connector (not shown) on the house body 1 side and a connector 7 which is automatically connected.

On the other hand, a light guide (not shown) is attached to the inner surface of the lamp house main body 1 so as to face the lamp 5, and the light emitted from the lamp 5 provided in the light source unit 15 is received at the end surface of the light guide. This light is transmitted to an illumination system of an optical microscope device (not shown).

In this configuration, one side of the light source unit 15 has a hinge 14 with respect to the lamp house body 1.
Is connected rotatably through the other side, and the other side facing the side connected by the hinge 14, that is, the movable side 2a
Is fixed to the lamp house body 1 with screws 12,
Further, one end 11a of a lock member 11 made of a shape memory alloy that deforms due to a temperature change with respect to the inner surface near the movable side 2a is fixed, and the other end is connected to an open end 11b (see FIG. 2) bent into a substantially L shape. Has formed. When the lock member 11 is deformed due to a temperature change, the open end 11 b is arranged to be hooked on the back surface side of the lamp house body 1.

The material of the shape memory alloy is N
There are i-Ti-based alloys, Cu-Zn-Al-based alloys, and the like, which can have a property of restoring the shape at each temperature by a temperature change by performing an external processing operation during the production of the alloy.

FIGS. 2 and 3 are views of the light source unit 15 as viewed from above, and show a state in which the lid 2 of the light source unit 15 is fixed to the opening 13 of the lamp house body 1 with screws 12. . In these figures, one end 11a of the lock member 11 is fixed to the inner surface of the lid 2, and the open end 11b is open to be displaceable.

As shown in FIG. 2, when the inside of the lamp house main body 1 is at a normal temperature equal to or lower than a prescribed value, the lock member 11 is not locked in the opening 13 of the lamp house main body 1, that is, locked. Not in a state. Further, as shown in FIG. 3, when the temperature inside the lamp house main body 1 is equal to or higher than a specified value, the lock member 11 is deformed in accordance with the temperature change, and the open end 11b moves to the back side of the opening 13 of the lamp house main body 1. As a result, the locked state, that is, the open end 11b serves as a claw and is locked.

According to the present embodiment, the shape of the lock member 11 constituting the lock mechanism is made of a shape memory alloy which is deformed by a change in temperature. Is locked, it becomes impossible to take it out of the lamp house main body 1. At a temperature lower than the specified value, the lock is released and the light source unit 15 can be taken out. That is, in the locked state, the lid 2 does not open even if the user loosens the screw 12 to replace the lamp, so that the light source unit 1
5 cannot be taken out. Therefore, the hot lamp 5
No more touching the hands.

In order to prevent the user from judging this condition as a failure due to the fact that the cover 2 does not open at high temperatures, it is preferable to attach a warning label or the like to make the user understand. In addition, the operability can be further improved if the lock can be released by using a special tool or the like in case of urgent replacement of the lamp 5.

(Embodiment 2) FIGS. 4 to 6 show Embodiment 2 of the present invention. FIG. 4 is a sectional view showing an illumination mechanism of an optical microscope apparatus, and FIGS. It is operation | movement explanatory drawing seen from the side surface side.

As shown in FIG. 4, the illumination mechanism of the optical microscope apparatus according to the present embodiment is configured such that the light source unit 30 can be inserted into and removed from the lamp house body 21 in the horizontal direction. It is an example in which the lock mechanism of the present invention is applied to a microscope device. Note that the material used for the lock member is the same as that of the first embodiment, and a description thereof will be omitted.

The light source unit 30 includes a lamp socket 24 for mounting the lamp 22 on the upper surface of the support member 23.
, The optical member 25 and the illumination light path tube 27 are fixed, and the entire light source unit 30 is fixed to the lamp house body 21 by tightening the upper part of the illumination light path tube 27 and the lamp house body 21 with fixing screws 26. It is fixed. Reference numeral 28 in the drawing denotes an electrode for connecting a lead wire (not shown).

In this configuration, one end 29a of the lock member 29 made of a shape memory alloy is fixed to the lamp house main body 21 and the other end is opened, and the open end 29b is opened on the upper surface of the illumination optical path tube 27. It is bent so that it can be inserted into. When the inside of the lamp house main body 21 is at a normal temperature equal to or lower than a specified value, the lock member 29 is in a state where its open end 29b is not locked in the locking hole 31, as shown in FIG. When the temperature in the lamp house main body 21 is equal to or higher than the specified value, the lock member 29 is deformed as the temperature changes as shown in FIG.
The deformed open end 29b is inserted into the locking hole 31 of the illumination optical path tube 27, that is, the open end 29b functions as a claw, and the light source unit 30 and the lamp house main body 21 cannot be separated from each other in a locked state. .

In the apparatus having this configuration, if the lamp 22 is disconnected during use, even if the user loosens the fixing screw 26 to replace the lamp 22, the lamp house
While the inside of the housing 1 keeps the temperature equal to or higher than the specified value, the open end 29b of the lock member is in the state of being hooked in the hook hole 31 of the illumination optical path tube 27. Can not be taken from When the temperature in the lamp house main body 21 drops to a temperature equal to or lower than the specified value, the locking member is deformed in accordance with the temperature change, so that the lock is automatically released and the light source unit 30 can be taken out. Therefore, in a high temperature state, the light source unit 30
Can not be taken out, so that it is not necessary to touch the hot lamp 22 with a hand.

As described above, the light source unit 30 cannot be taken out of the lamp house main body 21 when the temperature is higher than the specified value, but in order to prevent the user from judging this state as a failure as in the first embodiment. It is preferable to attach a warning label or the like for understanding. In addition, the operability can be further improved if the lock can be released by using a special tool or the like in case of urgent replacement of the lamp 5.

According to the present embodiment, the first embodiment
The same operation and effect as described above can be obtained. Note that the present invention is not limited to the first and second embodiments, and various modifications or changes are possible. For example, the first and second embodiments
Although the shape memory alloy is used for the lock members 11 and 29 in this embodiment, the same effect can be obtained by using a bimetal in which two or more metals having different coefficients of thermal expansion are joined instead. In addition, any mechanism that changes its form reversibly with temperature can be applied to the present invention.
For example, it is conceivable that a small cylinder is filled with a liquid having a high coefficient of thermal expansion. In this case, since the cylinder head moves in accordance with a change in the temperature of the outside air, a similar effect can be obtained by incorporating the cylinder head as a lock mechanism.

[0032]

According to the first and second aspects of the present invention, the use of a material which deforms in response to a temperature change in the lamp house, such as a shape memory alloy, has a structure which can be opened and closed with respect to the house opening. By using a lock mechanism that prevents the lid from opening and closing for the optical microscope device, the user is notified that the lamp cannot be replaced in a high temperature condition that requires gloves inside, and the lamp cannot be replaced. can do.
Further, even in an optical microscope apparatus having a structure in which the lamp and the lamp supporting member are pulled out from the entire cover constituting the lamp house, a lock such that the entire cover and the lamp supporting member cannot be separated using a shape memory alloy or the like. By configuring the mechanism, it is possible to obtain an effect of notifying the user that the lamp cannot be replaced unless the temperature in the lamp house falls below the specified value.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an illumination mechanism of an optical microscope device according to a first embodiment of the present invention.

FIG. 2 is an operation explanatory view of the lock portion viewed from the upper surface side.

FIG. 3 is an operation explanatory view of the lock portion viewed from the upper surface side.

FIG. 4 is a sectional view showing an illumination mechanism of an optical microscope device according to a second embodiment of the present invention.

FIG. 5 is an operation explanatory view of the lock portion viewed from a side.

FIG. 6 is an explanatory view of the operation of the lock section viewed from the side.

FIG. 7 is a sectional view showing an illumination mechanism of a conventional optical microscope device.

FIG. 8 is a cross-sectional view showing an illumination mechanism of a conventional optical microscope device.

[Explanation of symbols]

 1, 21 Lamp house body 2 Lid 3 Handle 4, 9 Support frame 5, 22 Lamp 6, 24 Socket 7 Connector 8, 28 Electrode 10 Light guide 11, 29 Lock member 12, 26 Fixing screw 13 Lamp house opening 14 Hinge 15 , 30 light source unit 23 lamp support member 25 optical member 27 illumination light path tube 31 locking hole

Claims (2)

[Claims] In an optical microscope apparatus wherein a light source unit can be inserted into and removed from a lamp house, when the temperature in the lamp house is higher than a specified value when the light source unit is taken out of the lamp house, the light source unit is movable. An optical microscope apparatus comprising: a lock mechanism that locks a part to a lamp house side and releases the lock when the temperature in the lamp house is equal to or lower than a predetermined value. 2. The optical microscope according to claim 1, wherein the lock mechanism is formed of a lock member made of a material whose shape changes due to a change in temperature, and the lock mechanism is opened and closed by changing the shape of the lock member. apparatus.