JP4320088B2 - Electronic endoscope device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electronic endoscope apparatus for performing video signal processing and illumination light supply to an electronic endoscope.
[0002]
[Prior art]
FIG. 11 shows a conventional electronic endoscope apparatus, which is a video signal for processing an imaging signal sent from an electronic endoscope (electronic scope) 1 that captures an endoscope observation image by a solid-state imaging device. A power source for converting the processing device 2, the light source device 3 for generating illumination light to be supplied to the electronic endoscope 1, and the commercial AC power input from the commercial power source input 6 into various power sources having characteristics suitable for them The apparatus 4 is accommodated in one housing as each in-apparatus unit.
[0003]
[Problems to be solved by the invention]
As described above, the conventional electronic endoscope apparatus having an integrated structure becomes large in size, which not only hinders the handling of placement and movement, but also improves or replaces a part. Sometimes it is uneconomical to have to replace the whole thing when you want.
[0004]
In addition, 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, thereby reducing the image quality. There is a case.
[0005]
In order to prevent noise from entering the video signal processing device, it may be possible to electrically shield it or take a distance between the power supply device and other devices, but a new shielding member is required. Or the case becomes large and causes the above-mentioned problems.
[0006]
Accordingly, the present invention is an electronic endoscope that can be easily handled, can be partly improved and replaced economically, and can prevent deterioration in image quality due to the influence of noise from the power supply circuit of the video signal processing apparatus. An object is to provide a mirror device.
[0007]
[Means for Solving the Problems]
In order to achieve the above object, an electronic endoscope apparatus of the present invention is a video signal processing apparatus for processing an imaging signal sent from an electronic endoscope that images an endoscopic observation image with a solid-state imaging device. And a light source for generating illumination light to be supplied to the electronic endoscope in the first housing, and in a second housing provided independently from the first housing, A power supply device that converts the power supplied to the commercial power supply input into a power supply having characteristics suitable for the device in the first housing and outputs the power is accommodated, and the power output output from the power device in the second housing is conducted. This is supplied to the device in the first housing via a line.
[0008]
When the light source is a xenon lamp or the like, the power source device of the light source may be arranged in the first housing. When the light source is a halogen lamp or the like, the power source device of the light source is arranged in the second housing. Good.
[0009]
Also, a main power switch for manually turning on / off the power supply device arranged in the second housing is attached to the second housing side, and the power input from the power supply device to the first housing is manually operated. A sub power switch for turning on / off 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 signal lines, whereby the first and second Interlocking control of the devices in the housing can be performed.
[0011]
Further, the sub power switch for turning on / off the power supply to the device arranged in the first housing may be controlled by the control device arranged on the first housing side.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a first embodiment of the present invention. Reference numeral 1 denotes an electronic endoscope (electronic scope) that captures an endoscope observation image with a solid-state imaging device.
[0013]
In the first casing 10 provided with a connector to which the electronic endoscope 1 is detachably connected, a drive signal is output to the electronic endoscope 1 or sent from the electronic endoscope 1. A video signal processing device 2 for processing an incoming image signal is incorporated.
[0014]
A television monitor for displaying an endoscopic observation image is also connected to the video signal processing device 2. A power supply portion for supplying drive power to the video signal processing device 2 is not built in the first casing 10 at all.
[0015]
The first housing 10 also includes 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 lamp. Therefore, since the length of the high-voltage transmission part is short, noise during lighting can be reduced.
[0016]
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.
[0017]
The second casing 20 provided completely separated from the first casing 10 is supplied with commercial AC power supplied from the commercial power input 6 by the devices 2, 3, 7A on the first casing 10 side. A power supply device 4 for converting each power source having the necessary characteristics is incorporated. A main power switch 5 for turning on / off the power is connected between the commercial power input 6 and the power supply device 4.
[0018]
FIG. 2 shows a configuration example of the power supply device 4, and 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 each of the stabilized power supply blocks 43 corresponds to the purpose. The output is converted to a stabilized power supply with characteristics.
[0019]
FIG. 3 shows a configuration example of the stabilized power supply block 43, and the AC input is first transformed by the insulation transformer 431 and converted to DC by the rectifier circuit 432. The voltage generated by the voltage dividing circuit 434 and the reference voltage 435 are fed back from the error amplifying circuit 436 to the control circuit 433, and a stabilized power output is performed.
[0020]
Returning to FIG. 1, the second housing 20 includes a second control device 7 </ b> B having a microprocessor, for example, and performs various controls necessary for the operation of the power supply device 4.
[0021]
The second casing 20 and the first casing 10 are connected by the power supply conductive line 30 and the signal line 40, and the power supply device 4 disposed in the second casing 20 The stabilized power output is supplied to the video signal processing device 2, the light source device 3, the first control device 7 </ b> A and the like in the first housing 10 through the power supply conductive line 30.
[0022]
Further, the first control device 7A in the first housing 10 and the second control device 7B in the second housing 20 are connected via the signal line 40, for example, the first housing 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 10 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.
[0023]
Note that the power supply conductive line 30 and the signal line 40 are combined into one cable, and both ends thereof can be collectively connected to the first casing 10 side and the second casing 20 side, respectively. A so-called collective connector is attached.
[0024]
In this way, 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. It is economical because it is not necessary to replace the whole when it is necessary to improve or replace.
[0025]
In addition, since the video signal processing device 2 is disposed in a completely different housing 10 from the power supply device 4, deterioration of image quality due to the influence of noise from the power supply device 4 to the video signal processing device 2 is prevented, and the internal An endoscopic image can be output.
[0026]
Moreover, each housing | casing 10 and 20 can be reduced in size, and since arrangement | positioning of the 1st housing | casing 10 and the 2nd housing | casing 20 can be changed according to situations, such as a place and movement, handling property is easy. Good.
[0027]
4 shows an example in which the first casing 10 and the second casing 20 are arranged side by side, FIG. 5 shows an example in which the first casing 10 and the second casing 20 are arranged in the front-rear direction, and FIG. FIG. 7 shows an example in which the first casing 10 and the second casing 20 are stacked up and down, and FIG. 7 shows an example in which the first casing 10 and the second casing 20 are stacked in the mobile cart 100. Yes. Reference numeral 11 denotes a connector for connecting the electronic endoscope 1.
[0028]
In such an arrangement, in the case of side-by-side (FIG. 4) and vertical stacking (FIG. 6), the operation related to the first casing 10 and the operation related to the second casing 20 are separated on the entire surface. It becomes easy and operability is good. In the case of stacking vertically (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 apparatus is stable.
[0029]
In the case of cart loading (FIG. 7), the relatively lighter first casing 10 of the electronic endoscope apparatus can be brought to a height that can be easily operated. The stability of the cart is not impaired compared to the mirror device.
[0030]
FIG. 8 shows a second embodiment of the present invention, in which only the lamp 3 a in the light source device 3 is arranged in the first housing 10, and the lamp power source 3 b is in the second housing 20. They are arranged, and the lamp conductor 50 is connected between them. Others are the same as in the first embodiment.
[0031]
When a lamp that does not require a high voltage, such as a halogen lamp, is used as the lamp 3a, the video signal processing device 2 and the lamp power source 3b are separated into different housings 10 and 20 in this way. The influence of noise on the video signal processing device 2 from the power supply 3b can be reduced.
[0032]
FIG. 9 shows a third embodiment of the present invention, in which a sub manual switch 5A is arranged on the first housing 10 side, and the output end of the power supply conductive line 30 is connected to the sub switch 5A at one end. The power input from the power supply device 4 can be turned on / off on the first housing 10 side. Others are the same as in the first embodiment. Thus, by arranging the sub manual switch 5A on the first housing 10 side, power saving on the first housing 10 side can be achieved.
[0033]
FIG. 10 shows a fourth embodiment of the present invention. On 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 is the first control device 7A. The power supply to the video signal processing device 2 and the light source device 3 can be controlled as necessary in the first control device 7A. 9 is a switch that is on / off controlled for this purpose. Others are the same as in the first embodiment.
[0034]
By doing in this way, the power supply to each apparatus in the 1st housing | casing 10 can be automatically performed selectively according to the operation mode of an electronic endoscope apparatus, and power saving can be achieved.
[0035]
【The invention's effect】
According to the present invention, in the electronic endoscope apparatus, the video signal processing device and the light source are accommodated in the first housing, the power supply device is accommodated in the second housing, and the power supply in the second housing is accommodated. By supplying the power output output from the device to the device in the first housing via the conductive wire, it is not necessary to replace the whole when it is necessary to improve or replace a part of the device. Since each case can be reduced in size and the arrangement of each case can be changed according to the situation such as placement or movement, the handling is good. Furthermore, it is possible to prevent the image quality from being degraded due to the influence of noise from the power supply circuit on the video signal processing apparatus.
[Brief description of the drawings]
FIG. 1 is a block diagram showing 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 showing a state in which two housings according to the first embodiment of the present invention are arranged side by side.
FIG. 5 is a perspective view of a state in which two housings according to the first embodiment of the present invention are arranged in the front-rear direction.
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 of the first embodiment of the present invention in a state where two housings are stacked on a cart.
FIG. 8 is a block diagram showing a configuration of an electronic endoscope apparatus according to a second embodiment of the present invention.
FIG. 9 is a block diagram showing a configuration of an electronic endoscope apparatus according to a third embodiment of the present invention.
FIG. 10 is a block diagram showing 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 apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Electronic endoscope 2 Video signal processing apparatus 3 Light source apparatus 4 Power supply apparatus 5 Main power switch 6 Commercial power input 7A, 7B Control apparatus 10 1st housing | casing 20 2nd housing | casing 30 Power supply conductive line 40 Signal line 50 Lead wire for lamp

Claims (6)

An image signal processing device for processing an image signal sent from an electronic endoscope that picks up an endoscope observation image by a solid-state imaging device, and illumination light to be supplied to the electronic endoscope Is housed in the first housing,
A power supply that converts the power supplied to the commercial power input into a power supply having characteristics suitable for the device in the first housing and outputs the power in a second housing that is provided independently of the first housing. to accommodate the equipment,
While supplying a power output output from the power supply device in the second housing to the device in the first housing via a conductive wire ,
An electronic endoscope apparatus, wherein a main power switch for manually turning on / off the power supply apparatus is attached to the second casing side . The electronic endoscope apparatus according to claim 1, wherein a step-up transformer for obtaining a voltage for starting and lighting the light source is disposed in the first casing. The electronic endoscope apparatus according to claim 1, wherein a power supply device for the light source is disposed in the second casing. The electronic internal unit according to claim 1, 2, or 3, wherein 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 side. Endoscopic device. A control device for interlocking control of the power supply device and the video signal processing device is disposed in the first and second casings, and both control devices are connected by a signal line. Or the electronic endoscope apparatus of 3. 6. The electronic endoscope according to claim 5 , wherein a sub power switch for turning on / off a power source for the device disposed in the first housing is controlled by a control device disposed on the first housing side. apparatus.

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