JPH0555847B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an endoscope light source device that supplies illumination light to an endoscope.

[Technical Background of the Invention and Problems Therewith] A light source device that supplies illumination light to an endoscope uses a high-intensity lamp, so when it is turned on, the lamp itself and its socket become extremely hot. For example, the temperature of the socket rises to around 260℃. It is undesirable to use the lamp at such a high temperature because it not only shortens the life of the lamp but also heats surrounding electronic components. Indeed, there are conventional light source devices in which a cooling fan is provided inside the case body. However, in this conventional method, an attempt is made to cool the entire case body by blowing air evenly and simultaneously. Therefore, the cooling capacity near the lamp, where the temperature is highest, was not necessarily sufficient.

[Object of the invention] The present invention has been made focusing on the above circumstances, and
The purpose is to provide a light source device for an endoscope that has a simple configuration and can efficiently air-cool a lighting lamp section.

[Summary of the Invention] The light source device for an endoscope of the present invention includes a light source lamp part provided in a case body, an inlet part surrounding the light source lamp part and into which wind flows in, and an inlet part through which wind flows out. An enclosing member having an outflow port, which is opposed to the outflow port of the enclosing member, creates air passing from the inflow port in the enclosing member to the outflow port, and has an air suction area that includes the outflow port and the flow of air. a blowing means larger than the outlet; and a blowing means disposed near the inlet of the enclosure member and outside of the inlet, the optical axis (L1) of the light source lamp, and the optical axis (L1) of the light source lamp.
and an air baffle plate provided substantially parallel to a line (L) that connects the axis (L2) passing through the center of the inlet portion.

The airflow plate and its arrangement structure form an efficient flow of air toward the light source lamp.

[Embodiment of the Invention] Hereinafter, an embodiment of the present invention will be described based on the drawings.

Reference numeral 1 in FIG. 1 is a case body of an endoscope light source device. A socket 2 is provided on the front wall of the case body 1, and a light guide connector 3 of an endoscope is attached to the socket 2. Note that a light guide tube 4 is provided protruding from the light guide connector 3, and the incident end surface of the light guide is disposed at the tip of the light guide tube 4.

Further, located on the axis of the light guide tube 4 and within the case body 1, a light source lamp section 5 is disposed, which is comprised of a lamp 5c having a reflecting mirror 5b attached to a socket 5a. This light source lamp part 5
is attached to the lamp holder 7 together with a spare lamp section 6 that can replace the light source lamp section 5.

The lamp holder 7 is supported by a slide mechanism 8 so that it can reciprocate horizontally and horizontally. As shown in FIG. 3, the slide mechanism 8 is connected to a movable ball guide via two rows of bearing balls 12 to a fixed ball guide 11 which is attached and fixed to the support plate 9 in a horizontally horizontal direction. 13 is slidably inserted into the lamp holder 7, and the lamp holder 7 is fixedly attached to the movable ball guide 13. Note that 14 is a frame that holds the bearing ball group 12. The lamp holder 7 is moved horizontally and horizontally by the slide mechanism 8, but normally the lamp holder 7 is
As shown in the figure, the lamp 5c of the light source lamp unit 5 to be lit is positioned so as to face and match the tip of the light guide tube 4.

The spare lamp section 6 is located on the horizontal right side of the light source lamp section 5 and is attached to its lamp holder 7. When the light source lamp section 5 breaks down and becomes unusable, the spare lamp section 6 is installed in the lamp holder 7 as shown in Fig. 4. Then, move horizontally to the left as shown in FIG.
is now being placed in its place. Note that the lamp holders 7 are held in their respective positions by temporary fixing mechanisms (not shown).

The lamp holder 7 also has an operating lever 15.
is installed. This operating lever 15 is led out to the outside of the case body 1, so that a lamp switching operation can be performed from the outside using this operating lever 15.

A shutter plate 16, a diaphragm plate 17, and a condensing lens 18 are arranged between the light guide tube 4 and the light source lamp section 5. The shutter plate 16 and the aperture plate 17 are each operated by driving means (not shown). Further, the condenser lens 18 is supported by the support plate 9.

On the other hand, behind the support plate 9 is the lamp holder 7.
and the light source lamp section 5 including the slide mechanism 8
and a plate material surrounding the spare lamp part 6,
An enclosure member 21 that forms a cooling chamber 20 inside is installed. That is, the enclosure member 21 consists of a rising plate 22 disposed behind both lamp parts 5 and 6 and a top plate 23 disposed on the upper surface of the rising plate 22. The bottom plate 1a also substantially constitutes a part of the enclosure member 21 as a front wall and a bottom wall of the enclosure member 21. As shown in FIG. 1, the left side portion of the rising plate 22 is bent to narrow the distance from the support plate 9, so that the outlet portion 24 is biased toward the support plate 9.
is formed. A blower 25 as a blowing means is provided opposite to the outlet 24 , and the air suction action range of the blower 25 includes the outlet 24 and is larger than the outlet 24 . This blower 25 causes the surrounding member 2 to be
The cooling chamber 20 inside the cooling chamber 1 is designed to suck air therein. Further, the upper surface of the enclosure member 21 on the opposite side to the outflow port 24 remains open, and this opening forms an inflow port 26 for air.

Furthermore, a baffle plate 27 is provided near the inflow port 26 to collect outside air (wind) and guide it into the inflow port 26 and to create a flow of air toward the light source lamp section 5. There is. This air conditioning board 2
Reference numeral 7 extends from the inlet port 26 side of the upper surface plate 23 and tilts it diagonally upward, and the base portion of the air regulating plate 27 is located above and opposite to the light source lamp portion 5 . Furthermore, as shown in FIG.
is arranged near the inlet port 26 of the enclosure member 21 and outside the inlet port 26. Then, a line (L) connecting the optical axis (L1) of the light source lamp section 5 and an axis (L2) parallel to the optical axis (L1) of the light source lamp section 5 and passing through the center of the inlet section 26 is drawn. It is placed almost parallel to the

However, in the configuration of the above embodiment, the blower 2
When the air blower 5 is operated, the blower 25 absorbs air from various parts within the case body 1 and discharges air flowing in from the opposite side of the case body 1 to the outside of the case body 1.
Then, various parts inside the case body 1 are air-cooled. However, since the suction port of the blower 25 is installed close to the outflow port 24 of the enclosing member 21, suction is drawn from other parts of the case body 1, and at the same time, especially through the cooling chamber 20. Suction. Therefore, as shown in FIG. 2, air (wind) enters the cooling chamber 20 from the inflow port 26 and cools the light source lamp unit 5 that is being lit while traveling toward the outflow port 24. . Further, the air (wind) entering the inlet port 26 is collected by the air baffle plate 27, flows into the light source lamp section 5 in the cooling chamber 20, and concentrates on the light source lamp section 5. It cools it down. In addition, as shown in FIG. 1, the outlet portion 24 is narrowed and biased towards the support plate 9, that is, the lamp holder 7, so that the flow gathers toward the light source lamp portion 5, and thereby The light source lamp section 5
can be cooled more intensively.

On the other hand, when the lamp 5c of the light source lamp section 5 that has been lit up until now burns out and becomes unusable, it is switched to the spare lamp section 6. That is, the lamp holder 7 is moved by the operation lever 15, and the fourth
As shown in the figure and FIG. 5, the preliminary lamp section 6 is placed in place of the position where the light source lamp section 5 was previously located. Then, this spare lamp section 6 is used for lighting. Further, this preliminary lamp section 6 is cooled by the same effect as described above.

[Effects of the Invention] As described above, the present invention provides an enclosing member that surrounds a light source lamp to be lit and has an inflow port through which cooling air flows in and an outflow port through which cooling air flows out, and further includes a The part is approximately parallel to the line (L) connecting the optical axis (L1) of the light source lamp and the axis (L2) that is parallel to the optical axis (L1) of this light source lamp and passes through the center of the inlet. Parallel air conditioning plates are provided to collect and guide the wind to the inlet portion, and at the same time create a flow of wind toward the light source lamp portion. Therefore, the light source lamp section used for lighting can be efficiently cooled. In addition, the life of the light source lamp section that is lit can be extended. Additionally, it is possible to prevent a rise in surrounding temperature. The enclosing member blocks radiant heat and prevents surrounding electronic components from being heated. In addition, since the air blowing means has an air suction action range that includes the above-mentioned outlet and is larger than the outlet, one air blowing means can suck air from other parts of the case body, such as the light guide tube, etc. at the same time. Can be cooled. moreover,
Since the enclosure member is configured as a lamp house, it serves as a protective wall for other electronic components when replacing the lamp, thereby ensuring safety by preventing electric shock and the like. Further, the configuration of the present invention is relatively simple as described above, and is especially economical because the light source lamp section is efficiently cooled without adding an air blower.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention; FIG. 1 is a plan view schematically showing the main parts, FIG. 2 is a front view schematically showing the main parts, and FIG. 3 is a front view schematically showing the main parts. FIG. 4 is a side sectional view of the main part; FIG. 4 is a plan view schematically showing the main part when the spare lamp part is used;
The figure is a front view schematically showing the main parts when using the spare lamp section. 1...Case body, 5...Lamp part for light source, 2
DESCRIPTION OF SYMBOLS 1... Enclosing member, 24... Outlet part, 26... Inlet part, 27... Current plate.

Claims (1)

[Claims] 1. A light source lamp section provided in the case body, an enclosing member that surrounds the light source lamp section and has an inlet section through which wind flows in and an outlet section through which wind flows out, and a flow a blowing means that faces the outlet and generates air passing from the inlet to the outlet in the enclosure member, and has a blowing and suction action area that includes the outlet and is larger than the outlet; and an inlet of the enclosure member. A lamp is placed outside the inlet in the vicinity and connects the optical axis (L1) of the light source lamp and an axis (L2) that is parallel to the optical axis (L1) of the light source lamp and passes through the center of the inlet. 1. A light source device for an endoscope, comprising: a baffle plate provided substantially parallel to a line (L).