JPH01217801A - Device for installing light source lamp - Google Patents

Abstract

PURPOSE:To enhance the accuracy in aligning an optical axis with an optical system by holding a light source lamp detachably at heat sinks so as to be fixed, and thereby concurrently arranging the heat sinks at positions where the optical axis of the lamp is aligned with the optical axis of the optical system. CONSTITUTION:The positions in arrangement are determined in such a way, that the light out-going direction of a light source lamp 8 is aligned with the optical axis of an optical system so that both No.2 heat sink 3 and No.1 heat sink 2 are fixed. Then, an upper heat sink 2a and an upper heat sink 3a are opened so as to let the lamp 8 be fit in the recess faces 2b1 and 3b1 of the sinks 2b and 3b in such a way that the rear end section of the anode side electrode 8a of a xenon lamp 8 is joined with the stepped section 10 in the recess face of the lower heat sink 2b. Then, the upper faces of the lower heat sinks 2b and 3b are joined with the lower faces of the upper sinks 2a and 3a so as to let the electrodes 8a and 8b of the lamp 8 be coupled with the recesses 2a1 and 3a1 of the upper sinks so that the lamp 8 is held at the top and the bottom for letting the lamp 8 be firmly fixed onto the sinks 2 and 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a mounting device for a light source lamp, and more particularly to a mounting device for a light source lamp consisting of a short arc lamp requiring a heat sink.

[Prior art] In recent years, light source lamps for sending illumination light to endoscopes, etc.
Short arc lamps with high brightness and a large amount of heat are used. This light source lamp is attached to a light source device via a heat sink made of an endothermic material for thermal cooling.

The mounting means for this light source lamp is 5181
As disclosed in Japanese Patent No. 8 and Japanese Unexamined Patent Publication No. 60-208005, for example, a device for attaching a cylindrical xenon lamp to a light source device is as shown in FIG. The anode side of the first heat sink 52 is fixed to the first heat sink 52 with screws 55, and the cathode side is fixed to the elastic member 56 of the second heat sink 53. The second heat sink 52,53 is shown in FIG. 8(B).
As shown in FIG. 2, the xenon lamp 54 was fixed in a lamp house 51, and the optical axes of the xenon lamp 54 and the optical system for sending light were aligned.

In addition, when installing a bulb-type xenon lamp to a light source device,
Normally, as shown in FIG. 9, after attaching the connecting terminal 63 to the cathode side electrode of the xenon lamp 61 with a nut 65, the base of the anode side electrode of the xenon lamp 61 is directly attached to the lamp mount 62 with a nut 64. I fixed it while aligning the optical axis with the optical system. As described above, conventional xenon lamp fixing means fix the lamp electrode to a heat sink or lamp mount using screws or nuts.

[Problems to be Solved by the Invention] However, the conventional xenon lamp mounting means shown in FIG. 8 first attaches the xenon lamp 54 to the heat sink 52.
53, the heat sinks 52 and 53 are attached to the lamp house 51 while aligning the optical axis, which makes the work extremely complicated and troublesome when replacing the lamp. Furthermore, since the mounting screws 55 are small, they are difficult to mount and there is a high risk of them being lost.

In addition, the xenon lamp mounting means shown in Fig. 9 above uses nuts to secure it to the mounting base and attach the terminals, so the work of replacing the lamp is complicated, similar to the mounting means shown in Fig. 8 above. In addition, they had exactly the same problems, such as the risk of damaging the lamp during the work.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned conventional problems by allowing lamps to be replaced with a simple operation without directly screwing the light source lamp to the heat sink, and to improve the light connection between the lamp and the optical system. To provide a mounting device for a light source lamp which allows accurate axis alignment.

[Means and effects for solving the problem] In order to achieve the above object, the present invention provides a mounting device for a light source lamp consisting of a short arc lamp requiring a heat sink, in which the light source lamp is detachably held in the heat sink. The heat sink is characterized in that a fixing means is provided and the heat sink is disposed at a position where the optical axis of the lamp coincides with the optical axis of the optical system.

[Embodiments] The present invention will be described below based on illustrated embodiments. 1st
The figure is an exploded perspective view of a mounting device for a light source lamp made of a cylindrical xenon lamp, showing a first embodiment of the present invention, and FIG. It is a top view showing a process.

This mounting device 1 for a cylindrical light source lamp consists of a pair of upper and lower heat sinks 2a, 2 that hold and fix an anode side electrode 8a of a xenon lamp 8 (see FIG. 2), which is a light source lamp.
a first heat sink 2 consisting of b, and a cathode side electrode 8
two sets of heat sinks 2, a second heat sink 3 consisting of a pair of upper and lower heat sinks 3a and 3b, which hold and fix b;
It is composed of 3. The upper heat sinks 2a and 3a of the heat sink 2.3 are formed to have substantially the same shape and the same size, and the lower heat sink 2b.

3b are also formed to have approximately the same shape and size, and the anode side electrode 8a and cathode side electrode of the xenon lamp 8 are located at the center of the opposing surfaces of the heat sinks 2a, 2b and 3a, 3b for the upper and lower +ti, respectively. Semi-cylindrical concave surface 2 a 1+ 2 b t +3a1, 3b that grips 8b
, and a large number of heat sinks are formed above and below it.

Further, wing-shaped mounting plates are formed on the left and right sides of the concave surface, respectively. The mounting plates of the first and upper heat sinks 2a and 2b are each provided with a through hole and a screw threading hole, and the upper heat sink 2a is mounted by the screw 5 inserted into the through hole and screwed into the threading hole. It is configured to be detachably fixed to the lower heat sink 2b. on the other hand,
The second upper and lower heat sinks 3a, 3b are connected by a hinge 4 at the edge of the mounting plate on the side thereof, and the upper heat sink 3a can be opened and closed with respect to the lower heat sink 3b. The mounting plate on the other side is provided with a through hole and a screw threading hole, respectively, and the upper heat sink 3a is fixed to the lower heat sink 3b by screws 5. Furthermore, fixing plates extending left and right are formed at the bottom of each of the lower heat sinks 2b and 3b, and an electrode terminal 6 for supplying current to the lamp 8 is attached to one of the fixing plates. In order to absorb the thermal expansion of the xenon lamp 8, a fixing hole through which a positioning bolt 7 passes is formed in the fixing plate extending to the left and right of the lower heat sink 3b of the heat sink 3 that holds the cathode side electrode 8b. It is formed by a play hole 9.

Further, a stepped portion 10 is formed on the rear side of the concave surface provided at the center of the heat sinks 2a, 2b in order to hold the rear end portion of the anode side electrode 8a of the xenon lamp 8.

The light source lamp mounting device 1 of this embodiment configured as described above operates as follows. First, as shown in FIG. 2, the position of the light source lamp 8 is determined so that the light emission direction of the light source lamp 8 matches the optical axis of the optical system, and the lamp 8 is held at the same position. Next, the second heat sink 3 is fixed with bolts 7 through the play holes 9, and the first heat sink 2 is fixed behind it. Thereafter, as shown in FIG. 1, the upper heat sink 2a of the first heat sink 2 is removed from the lower heat sink 2b, and the upper heat sink 3a of the second heat sink 3 is opened, and the xenon lamp 8 is removed as shown in FIG. The xenon lamp 8 is placed on the concave surface 2 of the heat sink 2b, 3b so that the rear end of the anode electrode 8a of
Insert into b1 and 3b1. Upper heat sinks 2a and 3 are placed on the upper surfaces of lower heat sinks 2b and 3b, respectively.
The lower surfaces of a are brought into contact with each other, and the concave surfaces 2 a , 3 a t
is the anode side electrode 8a of the lamp 8.

■ Fit the cathode side electrode 8b and sandwich the xenon lamp 8 from above and below, then screw the screws 5 by hand into the screw holes, respectively, and connect the upper and lower heat sinks 2a, 2.
b, 3a, and 3b are fixed, and the xenon lamp 8 is firmly fixed to the heat sinks 2 and 3.

In this way, according to this mounting device, the xenon lamp 8 is
A detachable first heat sink 2a.

2b and a second heat sink 3a that can be opened and closed.

3b, the optical axis alignment with the optical system can be adjusted and installed extremely easily. Therefore, there is no need to directly fix the xenon lamp to the heat sink with screws or the like as in the conventional case, and the xenon lamp can be easily replaced by simply removing the upper heat sink.

In this embodiment, the xenon lamp 8 is fixed to the heat sink 2゜3 by hand-cranked screws 5 and hinges 4, but these fixing means are not limited to these, and the reverse combination may be used. Also, both heat sinks 2
, 3 may be fixed together with only hand-cranked screws 5, or the upper and lower heat sinks of both heat sinks 2 and 3 may be connected with hinges 4, respectively, and fixed with hand-cranked screws 5. In addition, the upper and lower heat sinks 2a,
2b, 3a, and 3b may be fixed by a locking mechanism consisting of a removable latching member 11, as shown in Fig. Ta3. In this way, the work of replacing the light source lamp can be made easier.

FIG. 4 is a perspective view of a light source lamp mounting device showing a second embodiment of the present invention. In this embodiment, a bulb-type xenon lamp is used as the light source lamp. The light source lamp mounting device 21 in this embodiment is configured almost the same as the light source lamp mounting device 1 shown in FIG. Stop, I'll omit the explanation. Note that since the bulb-type xenon lamp 28 is normally installed vertically as shown in the figure, the light source lamp installation device f! of this embodiment is used. Heat sink in 21 22.23
Although there are some differences in shape, as is clear from the figure, the structure is exactly the same as the heat sinks 2 and 3 shown in FIG. 1, and the functions and effects are also the same.

FIG. 5 shows a third embodiment of the present invention, and is a perspective view showing a state of a cylindrical xenon lamp mounting device before the lamp is mounted.

The light source lamp mounting device 31 in this embodiment is also constructed in substantially the same manner as the light source lamp mounting device 1 shown in FIG. , the explanation thereof will be omitted. In this light source lamp mounting device 31, a cylindrical xenon lamp 8
(See Figure 2) Each pair of upper and lower heat sinks 32 in two sets of heat sinks 32° 33 grip the electrode portions at both ends.
a.

32b, 33a, and 33b are connected at their long sides by hinges 34', both heat sinks 32 and 33 are double-opened, and many heat sinks are formed. This structure is different from the light source lamp mounting device 1 shown in FIG. 1 above, and the other functions of the structure 2 are exactly the same.

According to this embodiment, it is possible to obtain the effect that the lamp can be easily installed and replaced from the side. Further, in this case as well, if a latching fitting 11 as shown in FIG. 3 is used, it is possible to further facilitate the installation and replacement of the lamp.

FIG. 6 shows a lamp mounting device according to a fourth embodiment of the present invention. This embodiment is also a case where a light source lamp made of a cylindrical xenon lamp is attached.

FIG. 7 is a sectional view showing a state in which the cylindrical light source lamp is held by the light source lamp mounting device.

The lamp mounting device 41 in this embodiment consists of a heat sink 42 that holds an anode side electrode 48a and a heat sink 43 that holds a cathode side electrode 48b, and a through hole in the center of the heat sink 42 into which a xenon lamp 44 is fitted from the rear. 45 is drilled. This through hole 45
is formed to have a size corresponding to the outer diameter of the xenon lamp 44. Also, in the center of the heat sink 43, there is a through hole 4 opposite to the through hole 45 of the heat sink 42.
6 is drilled. This through hole 46 is provided with a locking stepped portion 47 in the middle thereof, which forms a stopper for positioning the xenon lamp 48, with which the front end surface of the xenon lamp 48 comes into contact.

The xenon lamp mounting device of this embodiment configured as described above inserts the xenon lamp 48 from its tip end (cathode side) toward the through hole 45 of the heat sink 42, so that its tip end face is The fitting is made as shown in FIG. 7 until it comes into contact with the locking step 47 of the through hole 46 of the heat sink 43. After that, it may be fixed by appropriate means.

According to this embodiment, there is no need to open or remove a part of the heat sinks 42, 43, so the lamp installation and
Not only does the replacement work become easier, but it can also be installed without taking up extra space.

Furthermore, fine adjustment of the optical axis alignment of the lamp in each of the above embodiments is performed by providing a stopper on the heat sink on the side fixed to the chassis or the like, and aligning one end of the lamp with this stopper.

[Effects of the Invention] As explained above, according to the present invention, there is no need to directly screw the light source lamp to the heat sink.
Since the lamp can be installed and replaced in a short time and the lamp can be positioned at the same time, the accuracy of optical axis alignment with the optical system can be increased. In addition, since no extra force is applied to the lamp when fixing the lamp, accidents such as lamp damage can be minimized. It is possible to provide a mounting device for a light source lamp that is particularly free of problems.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of a light source lamp mounting device showing a first embodiment of the present invention, and Fig. 2 shows the light source lamp mounting device of Fig. 1 above, with the upper heat sink removed and the lamp installed. FIG. 3 is a perspective view showing an example of a locking means for a pair of upper and lower heat sinks; FIG. FIG. 5 is an exploded perspective view of a mounting device for a light source lamp according to a third embodiment of the present invention; FIG. FIG. 7 is a longitudinal cross-sectional view showing a cylindrical light source lamp held in the light source lamp mounting device of FIG. 6; Fig. 8 (A) is a side view showing how the light source lamp is mounted in a conventional cylindrical light source lamp mounting device, and Fig. 8 (B) shows how the light source lamp attached to the heat sink is mounted to the lamp house. FIG. 9 is a side view showing an example of a conventional bulb-type light source lamp mounting device. 1.21, 31.41... Light source lamp mounting device

Claims (1)

[Claims] (1) In a mounting device for a light source lamp consisting of a short arc lamp that requires a heat sink, a means for removably holding and fixing the light source lamp to the heat sink is provided, and the heat sink is connected so that the optical axis of the lamp is the optical axis of the optical system. 1. A mounting device for a light source lamp, characterized in that the device is arranged at a position that corresponds to the position of the light source lamp.