JPS6330816A - Light source device - Google Patents

Abstract

PURPOSE:To make the constitution simple and small in size by constituting a cooling fan by using a rotary filter or its driving part in common. CONSTITUTION:A rotary filter 20 of a light source device for an electronic scope is installed on a projecting optical axis L of a light source 21 in a body of the light source device, and an illuminating light from the light source 21 is made incident on an incident end of a light guide which has been connected to a connecting port. Between each part of each filter R, G and B, blades 26,... are provided, respectively, in accordance with the light source 21, and the blades 26,... are constituted so that air is jetted to the light source 21 by the rotation of the rotary filter 20. When the light source device is operated, the rotary filter 20 is rotated by a motor 24, the illuminating light is resolved into three colors successively and made to transmit, and the illuminating light beams of each color are made incident on the incident end of the light guide of the electronic scope which has been connected to the connecting port. Simultaneously, an air stream is generated in the vertical direction against the surface of its rotating body 22, and the light source 21 is air-cooled by jetting the air to the light source 21.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a light source device that generates illumination light for, for example, an electronic scope.

[Conventional technology]

Conventionally, a light source device for an endoscope, for example, one for an electronic scope is configured as shown in FIG. In this light source device, a light source lamp 1 is provided with a radiation fin 2, which is forcibly cooled by an electric fan 3 (see Japanese Patent Application Laid-Open No. 60-208005 on this point). Also, the 9th
As shown in the figure, the light emitted from the light source lamp 1 is transmitted to the optical system 4.
The light enters the endoscope 5 through the. moreover.

A rotary filter 6 for color-separating the light from the light source lamp 1 is inserted in the optical system 4, and is rotationally driven by a motor 7. Further, the main body 8 of the light source device is formed with an air inlet 9a and an air outlet 9b.
Air sucked in by the electric fan 3 from the air suction port 9a passes through the control circuit section 10, passes through the light source lamp 1, and is discharged to the outside from the air discharge port 9b.

In addition, 11 is a lighting control circuit, which is connected to another electric fan 1.
2, air is cooled by the air sucked in from the air suction port 13a, and the air is discharged to the outside from the air discharge port 13b.

[Problem that the invention seeks to solve]

By the way, in the conventional device described above, an electric fan 3 is used to cool the light source lamp 1.

In addition to the electric fan 3 itself, it is also necessary to design the layout of the parts for fixing the electric fan 3 and the flow of air. Therefore, it has the disadvantage that it is complicated, large-sized, and expensive.

The present invention has been made in view of the above circumstances.

The purpose is to provide a light source device that can be made compact with a simple configuration and can be provided at low cost.

[Means and effects for solving the problems] In order to solve the above problems, the present invention provides an illumination light source and a light emitted from the light source inside the main body of the device, which has a connection port for connecting the light guide of the electronic scope. an optical system that guides the illumination light to the incident end of the light guide; further provided is a rotating filter that color-separates the light passing through the optical system; and a driving device that rotationally drives the rotating filter; This light source device is provided with an air supply vane that is rotationally driven to send air toward the light source to air-cool the light source.

〔Example〕

1 to 4 show a first embodiment of the present invention. The rotating filter 20 of the light source device for an electronic scope in this embodiment is installed within the main body of the light source device, on the emitted optical axis of the light source 21, as shown in FIG. Further, the main body of this light source device is provided with a connection port for connecting a light guide of an electronic scope, and the illumination light from the light source 21 is made to enter the input end of the light guide connected to this connection port. ing.

Further, the rotating filter 20 has a rotating shaft 23 of a rotating body 22 connected to a motor 24 serving as a driving device, and is rotationally driven by the motor 24.

As shown in FIG. 2, the rotary body 22 of the rotary filter 20 is provided with three filters R, G, and B that separate illumination light into respective colors in order to obtain image signals using a field sequential method.

In addition, the light source 2 is located between each of the filters R, G, and B.
1 and 26 blades respectively. ...is provided. This feather26. ... is designed to blow air toward the light source 21 by rotating the rotary filter 20.

Note that the main body of this light source device for an electronic scope is formed with an air inlet 9a and an air outlet 9b as in the conventional example, and also has a control circuit section 10 and a lighting control circuit 11.
．． Related to this is another electric fan 12. An air intake hole 13a, an air outlet 13b, etc. are provided.

By the way, the above-mentioned blade 26. The specific structure of . . . is as shown in FIG. 3 or 4, for example. That is, in the one shown in FIG. 3, one piece of a member bent into an L-shape is attached to the surface of the rotating body 22 with a screw. In addition, in the case of the one shown in FIG. 4, a part of the rotating body 22 is cut and raised, and each blade 26. ...
It forms the By rotating the two-rotation filter 20, air is generated in a direction perpendicular to the surface of the rotating body 22 and is blown toward the light source 21.

Therefore, by operating the light source device, the motor 24
The rotary filter 20 rotates, and the illumination light is sequentially separated into three colors and transmitted, and the illumination light of each color is made to enter the input end of the light guide of the electronic scope connected to the connection port in the main body of the light source device. . At the same time, air is generated perpendicularly to the surface of the rotating body 22 due to the rotation of the rotating filter 20, and the air is blown toward the light source 21. Then, the light source 21 is air-cooled.

5 and 6 show a second embodiment of the invention.

In this embodiment, an air supply vane 26 is provided on the rotating shaft 23 of the rotating body 22. Cooling air is then blown from the side of the light source 21.

FIGS. 7 and 8 show a third embodiment of the present invention.

In this embodiment, a rotary shaft 30 is provided behind the motor 24 and protrudes from the rotary shaft 30, and air supply vanes 26 are provided on this rotary shaft 30. Cooling air is sprayed from the side of the light source 21 by the air supply vane 26 which rotates together with the rotating shaft 30 by the operation of the motor 24.

Note that the present invention is not limited to the above-mentioned embodiments, and for example, each filter R in the rotary body 22 of the rotary filter 20
, G, cut B itself diagonally.

This may be configured as a blade 26. Further, in this method, one of the filters R, G, and B may be selected and used as the blade 26.

〔Effect of the invention〕

As explained above, according to the present invention, there is no need to provide an electric fan for cooling the light source, and the cooling fan is configured by also using the one-rotation filter or its driving part, so the configuration can be simplified and miniaturized, and the cost can be reduced. A light source device can be provided.

[Brief explanation of the drawing]

FIG. 1 is a side view of the main parts in the first embodiment of the present invention,
FIG. 2 is a rear view of the rotary filter portion of the first embodiment, FIGS. 3 and 4 are perspective views showing the blade portion, and FIG. 5 is a main part of the second embodiment of the present invention. , FIG. 6 is a rear view of the frontispiece filter portion of the second embodiment, FIG. 7 is a side view of the main part of the third embodiment of the invention, and FIG. 8 is a second embodiment of the same. FIG. 9 is a front view of the rotary filter portion of the embodiment, and FIG. 9 is a schematic configuration diagram of a conventional light source device. 4...Optical system, 8...Main body, 20...Rotating filter. 24...Motor, 26...Blade. Applicant's representative Patent attorney Atsushi Tsuboi Figure 1 Figure 2 Figure 7 Figure 8 Procedural amendments Showa year; Application No. 61-174795 2, Name of the invention Light source device 3, Relationship to the amended case Patent applicant (037) Olympus Optical Industry Co., Ltd. 4, Agent 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo No. UBE Building patent claims are amended as shown in the attached sheet. 2. Scope of Claims (1) A device body having a connection port for connecting a light guide of an electronic scope and having a built-in illumination light source therein; an optical system that guides the light to the incident end of the light guide, a rotating filter that is provided within the device main body and that separates the light that passes through the optical system, and a drive device that rotationally drives the rotating filter;
A light source device comprising an air supply vane which is rotationally driven by the drive device to send air toward the light source and cool the light source. (2) The light source device according to claim 1, wherein the blade is provided on the rotating filter. (3) The light source device according to claim 1, wherein the blade is provided on a drive shaft of the drive device.

Claims (3)

[Claims] (1) A device body that has a connection port for connecting the light guide of an electronic scope and has a built-in illumination light source, and a device body that is installed in the device body and directs the illumination light emitted from the light source to the incident end of the light guide. a rotating filter that is provided within the main body of the apparatus and separates the light passing through the optical system; a driving device that rotationally drives the rotating filter; and a rotating filter that is rotationally driven by the driving device and directed toward the light source. A light source device characterized by comprising: an air supply vane that sends air and cools the light source. (2) The light source device according to claim 1, wherein the blade is provided on the rotating filter. (3) The light source device according to claim 1, wherein the blade is provided on a drive shaft of the drive device.