JPS60208005A - Light source - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a light source device for sending illumination light to, for example, an endoscope.

[Background technology of the invention and its problems]

In recent years, high-brightness lamps have been developed and put into practical use, but high-brightness lamps generate a lot of heat when turned on. In this case, the body of the high-intensity lamp itself becomes extremely hot. For this reason, it has been proposed that the member holding the rung be used as a heat sink to achieve thermal cooling (Jikko Sho 58 =
25582, Japanese Patent Application Laid-open No. 58-67232)
. However, the exit end of the lamp body tends to become particularly hot when lit, but with the above structure, by simply joining the heat sink to the outer peripheral surface of the lamp body, the heat conduction from the aluminum to the heat sink is sufficient compared to the amount of heat generated. isn't it.

Therefore, when the lamp is turned on, the temperature near the exit end of the lamp body becomes high, which poses a problem.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances, and its purpose is to achieve a simple solution while reducing the percentage of the lamp body.
Another objective is to drastically improve cooling efficiency in the injection side portion.

[Summary of the invention]

In the present invention, an insertion groove is formed at the injection gllll end edge K of the lamp body, and a part of the heat dissipation member is inserted into and abutted against the insertion groove, thereby improving the efficiency of heat conduction to the heat dissipation member. This is a light source device.

[Embodiments of the invention]

Hereinafter, each embodiment of the present invention will be described based on the drawings.

1 to 5 show a light embodiment of the present invention. FIG. 1 shows a light source lamp unit l incorporated into an endoscope light source device, and this light source rung unit l has a light source rung 4 made of a xenon rung held in a lamp house 2 by a holding mechanism 3 to be described later. .

This light source lamp 4 is constructed as shown in FIG. That is, the injection window 6 is formed in one end of the cylindrical lamp body 5, and the other end 1 is formed as the first cap 7. The first cap 7 has a two-stage structure consisting of a small diameter portion 8 located at the outermost end and a large diameter portion 9 continuous to the inner side. Further, a large-diameter second base II is formed on the outer peripheral portion of the rung body 5 outside the injection window 6. A plurality of screw holes 12 are formed in the end surface of the small diameter portion 8. Furthermore, a discriminating cap 13 is fitted onto the first cap 7, which is selectively installed depending on the type of light source device in which the light source rung 4 is installed. This discrimination cap 13 is completely adjacent to the first metal rod 7 and is tightly fitted to the large diameter portion 9VC thereof. The cap 13 is tightened and fixed by a tightening band 14. Also, the cap 13 is inserted into the end face of the rung body 5 on the side of the injection window 6 along the entire circumference of the end edge. A groove I5 is also formed. This insertion groove 15Vc has a shape 5 into which a projection 17 provided on a heat radiation tube 16 as a heat radiation member to be described later is fitted and abutted.

On the other hand, the holding mechanism 3 is constructed as shown in FIG. That is, the upper and lower parts of the lamp house 2 are provided with bases III made of an electrically insulating material, respectively.
19 is installed, and each of the bases 78, 19 is fixedly attached to the lamp house 2 by means of setscrews 20, respectively.

Mata, each base 18. 9, front and rear heat sinks 21 and 22 are respectively installed in a state where they face each other and are spaced apart from each other. Both ends of each heat sink 21.22 are attached to its base 18.19 by means of mounting screws 23.
The installation is fixed at ℃. Each heat sink 27.22 has a large number of heat dissipation fins 721a...
・.

22B... is provided.

A first mounting hole 24 into which the first base 7 of the rung body 5 is lowered is formed in the rear heat sink 22.

This first mounting hole 24 differs in size depending on the type of the light source device, and is large enough to tightly cover the discrimination cap 13 described above (as shown in the drawing), and a small diameter portion 8t of the cap 7. - Not shown to be large enough to fit tightly. ) and are selected accordingly. And Kono 141
After fitting into the mounting hole 24 of the heat sink 22, a fastening screw 25 passing through the heat sink 22 is screwed into the screw hole 12 and fastened and fixed to the heat sink 22.

Further, the front heat sink 21VC is formed with a second mounting hole 26 through which the radiation MW 16 is passed.
The shoulder portion of the f-tube 160 is fitted onto the outer periphery of the second base 11 of the rung body 5.

Further, a male thread 27 is formed on the outer periphery of the rear end of the heat dissipation tube 16, and is identified by screwing this male thread into the heat sink 21 described above using 27-karat gold. In addition, the heat sink 16
A circumferential groove 28 is formed in the inner surface portion of the second cap 11VC to which the second cap I1VC is fitted.
A spring member 29 that presses against I is fitted.

Further, as described above, the heat dissipation tube 16 is formed with a protrusion 17 along its inner circumference that is fitted into and abuts the insertion groove 15, and the protrusion 17 enters inside the lamp body 5 and comes into close contact with it. ing.

A heat ray absorbing filter 3I is attached to the opening at the tip of the heat radiation tube 16. Further, a plurality of heat radiation fins 32 are provided around the outer periphery of the heat radiation tube 16.

On the other hand, an opening window 33 is formed in the front wall of the Langhaus 2 corresponding to the exit end of the light source lamp 4, and another heat ray absorbing filter 34 is disposed in the opening window 33VC. In other words, the filter 34 is attached to the frame 35. Further, the filter 34 is divided into two parts, upper and lower, and the upper end part is pressed by a presser spring 36. In other words, this filter 34 has two upper and lower parts.
Since the light source lamps 4 are divided into two parts, even if they are heated when all of the light source lamps 4 are turned on, no large distortion occurs, and durability can be improved.

Further, as shown in FIG. 3, a cooling fan 37 is installed on the side of the light source lamp 4, and includes the light source lamp 4, the heat sink I6, and each heat sink 21, 2211C.
The trap is designed to blow air to cool them down.

According to the above combination, the temperature at the periphery of the injection end of the rung body 5, which is considered to be heated the most during steady lighting, reached 90°C. Chinami K, heat sink 16, Toto 1
7 is provided, and this protrusion 17f is inserted into the insertion groove 15 of the lamp body 5.
In the case of the conventional method, which does not use the method of inserting the tube into the tube, the temperature at the same location is 170°C.

Of course, with the above configuration, the temperature of other parts of the rung body 5 will drop more than that.

FIGS. 6 and 7 show an embodiment of the second embodiment of the present invention. In this embodiment, the heat dissipation tube 16f is not directly connected to the insertion groove 15 of the rung body 5, but is connected via a ring member 41ff. One end of the ring member 4Z is fitted into the insertion groove 15 as the fitting edge 42, and the other end is fitted into the inner surface of the heat dissipation tube 16. Also, $t 5L for insertion.
As shown in FIG. 7, /C is fitted with a spring 43 formed by bending a band-shaped elastic plate into a polygonal annular shape. Soshi℃,
This spring 43 allows the above-mentioned fitting edge 42 to be inserted #I#1
It is designed to be brought into close contact with the inner surface of 5.

In this example, the temperature at the injection edge of the rung body 5 dropped to 140° C. during steady lighting. By the way, K, when the above ring member 4I is removed, the temperature at the same point becomes 1.
O raised to 70°C Figure 8 shows a third embodiment of the invention. In this embodiment, in order to enhance the thermal coupling between the ring member 41 and the lamp body 5 in the second embodiment, a coil spring 45 that presses the ring member 41'f and the lamp body 59111 is disposed inside the heat dissipation tube 16. It is something. In addition, the heat ray absorption filter 46
is attached to the ring member 41.

Further, FIG. 9 shows an embodiment of the fourth embodiment of the present invention. This embodiment uses the heat sink 22'IC directly connected to 51
This protrusion 51f is used for inserting the rung body 5.
It is pressurized to fit 5VC.

〔Effect of the invention〕

As explained above, the present invention can dramatically improve the cooling efficiency of the lamp body, especially the injection side portion which tends to be at the highest temperature, with a simple configuration.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view of the light source lamp section in the first embodiment of the present invention, FIG. 2 is an enlarged side sectional view of the main parts thereof, FIG. 3 is an exploded perspective view thereof, and FIG. Similarly, FIG. 5 is an exploded perspective view of the heat ray absorption filter portion, FIG. 6 is a side sectional view of the main part of the second embodiment of the present invention, and FIG. 7 is the same light source. FIG. 8 is an exploded perspective view of the rung portion, FIG. 8 is a side sectional view of the main part in the third embodiment of the present invention, and FIG. 9 is a side sectional view of the main part in the fourth embodiment of the invention. . l...Light source rung part, 4...Light source lamp, 5...Lamp body, 6...Emission window,! 5...Insertion groove, 16.
... Heat sink, J7... Projection, 21... Heat sink,
22... Heat sink, 42... Fitting edge, 51 Projection. Applicant's agent Patent attorney Atsushi Tsuboi

Claims (1)

[Claims] In a light source device in which a rung body of a light source rung is supported by a heat radiating member and the lamp body is cooled by heat conduction to the heat radiator, an insertion groove is formed at the exit side edge of the rung body; A light source device characterized in that a part of a heat dissipating member is inserted into and brought into contact with an insertion groove.