JP2001004926A - Electronic endoscope device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve cost effectiveness, to reduce the size of respective casings and to improve a managing property by housing a video signal processing device and a light source into the first casing and supplying the power source output of a power source device in the second casing to the device in the first casing. SOLUTION: The video signal processing device 2 is built in the first casing 10 provided with a connector to which the electronic endoscope device 1 is freely attachably and detachably connected. The power source device 3 for supplying illumination light to the electronic endoscope device 1 and a first controller 7A are also built therein. The power source device 4 for converting a commercial AC power source supplied from a commercial power source input 6 to the respective power sources of the characteristics necessary for the devices 2, 3 and 7A on the first casing 10 side is built in the second casing 20 disposed completely separately from the first casing 10. The first and second first casings 10 and 20 are connected to each other by a conductor 30 for the power source and a signal line 40. The stabilized powder source output from the power source device 4 in the second casing 20 is supplied to the video signal processing device 2, light source device 3, first controller 7A, etc., in the first casing 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic endoscope apparatus for performing video signal processing and illumination light supply for an electronic endoscope.

[0002]

2. Description of the Related Art FIG. 11 shows a conventional electronic endoscope apparatus, which processes an image pickup signal sent from an electronic endoscope (electronic scope) 1 for picking up an endoscope observation image by a solid-state image pickup device. Signal processing device 2 and electronic endoscope 1 for performing
A light source device 3 for generating illumination light to be supplied to the power supply and a power supply device 4 for converting commercial AC power input from a commercial power input 6 into various power supplies having characteristics suitable for them are included as one unit in each device. Are housed in one housing.

[0003]

As described above, the conventional electronic endoscope apparatus having a structure in which everything is integrated becomes large in size, which not only hinders the arrangement of the storage space and the movement of the electronic endoscope apparatus, but also causes a problem. In some cases, it is uneconomical to replace or replace a part when it is necessary to make an improvement or replacement.

Further, if the video signal processing device and its power supply device are arranged in the same housing, it is difficult to prevent noise radiated from the power supply circuit from jumping into the video signal processing device. May decrease.

Further, in order to prevent noise from jumping into the video signal processing device, an electrical shield is provided,
It is conceivable to increase the distance between the power supply device and other devices. However, a new shielding member is required or the size of the housing is increased, causing the above-described problem.

Therefore, the present invention can be easily arranged, can be partially improved or replaced economically, and can prevent a decrease in image quality due to the influence of noise from the power supply circuit of the video signal processing apparatus. It is an object to provide an electronic endoscope device.

[0007]

In order to achieve the above object, an electronic endoscope apparatus according to the present invention comprises an imaging signal transmitted from an electronic endoscope for imaging an endoscope observation image by a solid-state imaging device. And a light source for generating illumination light to be supplied to an electronic endoscope are housed in a first housing and provided independently of the first housing. A power supply device that converts the power supplied to the commercial power input into a power supply having characteristics compatible with the device in the first housing and outputs the power, and accommodates the power supply in the second housing. The power supply output from the device is supplied to the device in the first housing via a conductive wire.

In the case where the light source is a xenon lamp or the like, the power supply for the light source is preferably disposed in the first housing.
In the case where the light source is a halogen lamp or the like, the power supply device for the light source may be disposed in the second housing.

[0009] A main power switch for manually turning on / off the power supply device disposed in the second housing is attached to the second housing, and a power supply input from the power supply device to the first housing is provided. A sub power switch for manually turning on / off the power supply may be attached to the first housing side.

[0010] Then, a control device for interlocking control of the power supply device and the video signal processing device is disposed in the first and second housings, and both control devices are connected by a signal line, so that the first and second control devices are connected. The devices in the second housing can be controlled in an interlocked manner.

Further, a sub power switch for turning on / off a power supply to a device disposed in the first housing may be controlled by a control device disposed in the first housing.

[0012]

Embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows a first embodiment of the present invention, and 1 is an electronic endoscope (electronic scope) that captures an endoscope observation image using a solid-state imaging device.

An electronic endoscope 1 is provided in a first housing 10 provided with a connector to which the electronic endoscope 1 is detachably connected.
A video signal processing device 2 for outputting a drive signal to the camera and processing an imaging signal sent from the electronic endoscope 1 is built in.

A television monitor for displaying an endoscope observation image is also connected to the video signal processing device 2. The power supply for supplying drive power to the video signal processing device 2 is not built in the first housing 10 at all.

The first housing 10 also incorporates a light source device 3 for supplying illumination light to the electronic endoscope 1. The light source device 3 includes a xenon lamp as a light source lamp and a step-up transformer for obtaining a high voltage (for example, several thousand volts) for starting and lighting the xenon lamp. Therefore, since the length of the high-voltage transmission portion is short, noise during lighting can be reduced.

The first housing 10 incorporates a first control device 7A having a microprocessor, for example, and performs various controls necessary for the operation of the video signal processing device 2 and the light source device 3. I have.

In a second housing 20 provided completely separated from the first housing 10, a commercial AC power supplied from a commercial power input 6 is supplied to a device 2 on the first housing 10 side. A power supply device 4 for converting each of the power supplies having characteristics required for 3, 7A into a power supply is built in. Between the commercial power input 6 and the power supply 4,
Main power switch 5 for power on / off operation
Is connected.

FIG. 2 shows a configuration example of the power supply device 4,
An AC voltage is input in parallel to the plurality of stabilized power supply blocks 43 through the input switch 41 and the fuse 42, and the converted power is output to the stabilized power supply block 43 in each stabilized power supply block 43. .

FIG. 3 shows an example of the configuration of the stabilized power supply block 43. An AC input is first transformed by an insulating transformer 431, and is converted to a DC by a rectifier circuit 432. And
The voltage generated by the voltage dividing circuit 434 and the reference voltage 435 are
The error amplifier circuit 436 feeds back to the control circuit 433 to output a stabilized power supply.

Returning to FIG. 1, a second control unit 7B having a microprocessor, for example, is built in the second housing 20, and performs various controls necessary for the operation of the power supply unit 4.

The second housing 20 and the first housing 1 as described above.
0 is connected to the power supply conductive line 30 and the signal line 40, and is connected to the power supply device 4 disposed in the second housing 20.
Is supplied to the video signal processing device 2, the light source device 3, the first control device 7A, and the like in the first housing 10 via the power supply conductive line 30.

The first housing 10 is connected to the first housing 10 via a signal line 40.
The first control device 7A in the inside and the second control device 7B in the second case 20 are connected, for example, the first case 10
The information signal on the first housing 10 side is sent to the second control device 7B on the second housing 20 side so that the devices 2 and 3 in the inside can obtain the optimum power input according to the situation. Based on this, a control signal is output from the second control device 7B to the power supply device 4.

The power supply conductive line 30 and the signal line 40 are combined into a single cable, and a first cable is provided at both ends.
A so-called collective connector that can be collectively connected to each of the housing 10 and the second housing 20 is attached.

As described above, the first housing 10 containing the video signal processing device 2 and the light source device 3 and the second housing 20 containing the power supply device 4 are completely separated from each other. Thus, when it is desired to improve or replace a part of the apparatus, it is not necessary to replace the entire apparatus.

Further, since the video signal processing device 2 is disposed in the housing 10 completely different from the power supply device 4, a decrease in image quality due to the influence of noise on the video signal processing device 2 from the power supply device 4 is prevented. A good endoscope image can be output.

Further, since the size of each of the housings 10 and 20 can be reduced, and the arrangement of the first housing 10 and the second housing 20 can be changed according to the situation such as a place or movement. Good controllability.

FIG. 4 shows an example in which the first housing 10 and the second housing 20 are arranged side by side, and FIG. 5 shows the first housing 10 and the second housing 2.
FIG. 6 shows an example in which the first case 10 and the second case 20 are stacked up and down, and FIG. 7 shows an example in which the first case 10 and the second case 20 are moved. An example in which the cart 100 is loaded in a formula is shown. Reference numeral 11 denotes a connector for connecting the electronic endoscope 1.

In such an arrangement, horizontal arrangement (FIG. 4)
In addition, in the case of stacking vertically (FIG. 6), the operation relating to the first housing 10 and the operation relating to the second housing 20 are separated on the entire surface, so that it is easy to understand and the operability is good. In the case of vertical stacking (FIG. 6), if the second housing 20 having the power supply device is placed on the lower side, the center of gravity is lowered, so that the entire electronic endoscope device is stabilized.

Further, in the case of cart loading (FIG. 7), the relatively light first housing 10 of the electronic endoscope apparatus can be brought to an easily operable height. Compared to the electronic endoscope device, the stability of the cart is not impaired.

FIG. 8 shows a second embodiment of the present invention, in which only the lamp 3a in the light source device 3 is connected to the first housing 10.
And the lamp power supply 3b is disposed in the second housing 20, and the lamp power supply 3b is connected by a lamp conductor 50 therebetween. Others are the same as the first embodiment.

When a lamp that does not require a high voltage, such as a halogen lamp, is used as the lamp 3a,
By separating the video signal processing device 2 and the lamp power supply 3b into different casings 10 and 20 in this manner, the influence of noise from the lamp power supply 3b on the video signal processing device 2 can be reduced.

FIG. 9 shows a third embodiment of the present invention, in which a sub-manual switch 5A is disposed on the first housing 10 side, and the output end of the power supply conductive line 30 is connected to the sub-switch 5 at one end.
A, so that power input from the power supply device 4 can be turned on / off on the first housing 10 side. Others are the same as the first embodiment. By arranging the sub-manual switch 5A on the first housing 10 side as described above, power saving on the first housing 10 side can be achieved.

FIG. 10 shows a fourth embodiment of the present invention. In the first housing 10 side, not only the input from the signal line 40 but also the input from the power supply conductive line 30 are set to the first state. The video signal processing device 2 and the light source device 3 are received by the control device 7A.
The first controller 7A can control the power supply to the power supply as needed. Reference numeral 9 denotes a switch that is on / off controlled for that purpose. Others are the same as the first embodiment.

In this way, power can be automatically and selectively supplied to each device in the first housing 10 according to the operation mode of the electronic endoscope device, thereby achieving power saving. Can be.

[0035]

According to the present invention, in an electronic endoscope apparatus, a video signal processing device and a light source are housed in a first housing, and a power supply device is housed in a second housing. The power output from the power supply device in the case is connected to the first through a conductive wire.
By supplying the power to the devices inside the housing, it is not necessary to replace the whole unit when it is necessary to improve or replace a part of the housing, so that it is economical and the size of each housing can be reduced. It is possible to change the arrangement of the respective housings according to the situation such as the storage space and the movement, so that the handling property is good. Further, it is possible to prevent a decrease in image quality due to the influence of noise from the power supply circuit on the video signal processing device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating a configuration of an electronic endoscope apparatus according to a first embodiment of the present invention.

FIG. 2 is a block diagram showing a circuit of the power supply device according to the first embodiment of the present invention.

FIG. 3 is a block diagram showing a stabilized power supply circuit according to the first embodiment of the present invention.

FIG. 4 is a perspective view of a state where two housings according to the first embodiment of the present invention are arranged side by side.

FIG. 5 is a perspective view showing a state in which two housings according to the first embodiment of the present invention are arranged in front and rear.

FIG. 6 is a schematic side view showing a state in which two housings according to the first embodiment of the present invention are stacked up and down.

FIG. 7 is a schematic side view showing a state where two housings according to the first embodiment of the present invention are stacked on a cart.

FIG. 8 is a block diagram illustrating a configuration of an electronic endoscope apparatus according to a second embodiment of the present invention.

FIG. 9 is a block diagram illustrating a configuration of an electronic endoscope apparatus according to a third embodiment of the present invention.

FIG. 10 is a block diagram illustrating a configuration of an electronic endoscope apparatus according to a fourth embodiment of the present invention.

FIG. 11 is a block diagram showing a configuration of a conventional electronic endoscope device.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic endoscope 2 video signal processing device 3 light source device 4 power supply device 5 main power switch 6 commercial power input 7A, 7B control device 10 first housing 20 second housing 30 power supply conductive line 40 signal line 50 Lead wire for lamp

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2H040 BA00 DA00 GA02 4C061 AA00 BB01 CC06 DD00 GG01 HH60 JJ15 5C054 AA01 BA10 CC07 HA12

Claims (7)

[Claims] 1. An image signal processing device for processing an image signal sent from an electronic endoscope for imaging an endoscope observation image by a solid-state image sensor, and an illumination for supplying the image signal to the electronic endoscope. A light source for generating light is housed in a first housing, and a power supplied to a commercial power input is supplied to the first housing in a second housing provided independently of the first housing. A power supply device that converts and outputs a power supply having characteristics compatible with the device in the first housing is accommodated, and a power output output from the power supply device in the second housing is connected to the first housing through a conductive wire. An electronic endoscope device, wherein the electronic endoscope device is supplied to the device. 2. An electronic endoscope apparatus according to claim 1, wherein a power supply device for said light source is disposed in said first housing. 3. The electronic endoscope device according to claim 1, wherein a power supply device for the light source is disposed in the second housing. 4. The electronic endoscope device according to claim 1, wherein a main power switch for manually turning on / off the power device is mounted on the second housing. 5. A sub power switch for manually turning on / off a power input from the power supply device to the first housing is attached to the first housing.
The electronic endoscope device according to claim 1. 6. A control device for interlocking control of the power supply device and the video signal processing device is disposed in the first and second housings, and both control devices are connected by a signal line. The electronic endoscope apparatus according to claim 1, 2, 3, or 4. 7. A sub power switch for turning on / off a power supply to a device disposed in the first housing,
The electronic endoscope apparatus according to claim 6, wherein the electronic endoscope apparatus is controlled by a control device disposed on the first housing side.