JP2002248079A - Endoscope unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an endoscope unit for rapidly executing an action for normally lighting a lamp by noting a cause of turning off the lamp or a decrease in a light amount to a user. SOLUTION: This endoscope unit comprises the lamp 22 for irradiating an illumination light for illuminating a subject, and a power supply means 24 for supplying a power for lighting the lamp. Further, the endoscope unit comprises a condition detecting means disposed at the lamp 22 or near the lamp 22 to detect predetermined conditions regarding the lamp, and a noting means for noting the state of the lamp to an operator based on the detected result of the detecting means. The detecting means is a temperature detecting means for detecting whether or not the temperature of the lamp 22 or near the lamp 22 is a predetermined temperature or higher, or a power detecting means 51 for detecting whether or not a current or a voltage to be supplied from the power supply means to the lamp is below a predetermined current value or below a predetermined voltage value.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an endoscope, and more particularly, to an endoscope apparatus provided with a lamp for supplying illumination light for observation to an illumination optical system provided in the endoscope.

[0002]

2. Description of the Related Art As is well known, electronic endoscope apparatuses are widely used in the medical and industrial fields. In particular, an electronic endoscope apparatus used in the medical field is used for observing, diagnosing, treating, etc. an organ by inserting an elongated insertion portion into a body cavity of a patient. For this reason, various configurations are incorporated so that a malfunction does not adversely affect the human body during use.

In a general electronic endoscope device, a lamp provided in a light source device is turned on, and light emitted from the lamp is provided to an electronic endoscope (hereinafter simply referred to as an endoscope) by a condenser lens. Is condensed to the illumination light connector, and the condensed light is guided to the end of the endoscope by the light guide provided in the endoscope, and the illumination light is directed toward the subject through the illumination lens. Irradiation.

An observation image of a subject illuminated by the illumination light is supplied to a power supply or a driving pulse through a cable which is built in the distal end portion of the endoscope and is inserted through an insertion portion by an observation lens disposed in the distal end portion of the endoscope. An image is formed on an imaging surface of a solid-state imaging device such as a CCD (hereinafter, referred to as a CCD).
Then, the imaging signal of the optical image photoelectrically converted by the CCD is converted into a video signal by a video processor which is an external device and output to a display device. Various data such as a date and a management number input by a keyboard connected to the video processor are displayed together with an endoscopic observation image displayed on the screen of the display device.

[0005] Since the insertion portion of the endoscope is inserted into the body cavity from the mouth or anus of a patient, the thickness of the endoscope is limited in consideration of the insertability. Also, due to the characteristics of the light guide, such as the material, the amount of illumination emitted toward the subject is attenuated from the amount of light emitted from the lamp of the light source device. For this reason, a high-power lamp is mounted in the light source device in advance so that even if the light amount is attenuated, a light amount that does not hinder observation is obtained.

Generally, a high power lamp generates a large amount of heat. The light source device is provided with a cooling means such as a blower fan and a ventilation port in order to store the lamp in a closed space of the light source device housing. As a result, the temperature in the device housing is cooled to a temperature at which an electronic circuit or the like provided in the housing operates normally.

However, if the blower fan is defective or the ventilation port is closed for some reason, cooling will not be performed properly. Then, the temperature inside the device housing may rise above the specification of the electronic endoscope device due to the heat generated by the lamp, and a problem may occur in the electronic circuit and the like.

For this purpose, a temperature detecting means is provided in the housing,
By turning off the lamp when the temperature of the lamp or the inside of the housing becomes equal to or higher than the predetermined temperature, the temperature in the housing is prevented from rising to the predetermined temperature or higher.

[0009] Further, the lamp mounted on the light source device may be abnormal due to the lamp life. As an abnormality of the lamp, for example, in the case of a halogen lamp, there is a decrease in the applied current and applied voltage of the lamp due to disconnection and welding of tungsten. When such an abnormality occurs in the lamp, the lamp is turned off or the amount of light decreases,
Observation cannot be performed because illumination light necessary for observing the subject cannot be obtained.

As a countermeasure, Japanese Patent Laid-Open No. 10-19223
No. 8 discloses that a plurality of lamps are mounted on a light source device, and lamps other than the lamp being used are put in a standby state. A configuration is shown in which the observation can be continued by switching the lamp in the standby state and lighting the standby lamp.

However, in the case where the lamps can be switched, as a result of the switching, the arrangement position of the lamps may not be at an appropriate position for being condensed by the condenser lens for some reason. Is not sufficiently condensed, and the illumination light amount required for observation may not be obtained.

In addition to such a problem that observation cannot be performed, the switching of the lamp to be turned on causes a change in the cooling efficiency due to a change in the position of the heat source, resulting in abnormal temperatures in the lamp and the housing. There was a possibility that a problem of rising would occur.

In order to solve these problems, some lamps are provided with a lamp position detecting means for detecting whether or not a lamp to be used is arranged at an appropriate position. If the lamp position detecting means detects that the lamp position is not located at a normal position, the lamp is turned off to prevent the temperature inside the lamp and the housing from abnormally rising. I was

[0014]

However, in such a device, when the lamp is turned off as described above, in the prior art, the temperature inside the housing increases due to a failure of the cooling means of the light source device. The illumination light is not collected because the lamp is turned off to prevent the lamp from being turned off, or the lamp is turned off or the amount of light is reduced due to the life of the lamp, or the lamp is not arranged at a normal position. In a state where the user does not know the cause such as whether the amount of light is reduced or the lamp is turned off, the operator cannot obtain the amount of illumination light suitable for observation, and interrupts the observation.

In order to release the interruption, the user has to refer to the instruction manual to understand the cause of the lamp extinguishing or the reason for the decrease in the amount of light. There was a problem that it was troublesome to take a look, was not quick, and the observation could not be returned promptly.

[0016]

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and informs a user of a cause of turning off a lamp or a decrease in the amount of light so that a procedure for turning on the lamp normally can be performed promptly. It is intended to provide an endoscope apparatus.

An endoscope apparatus according to the present invention is an endoscope apparatus comprising: a lamp for emitting illumination light for illuminating a subject; and power supply means for supplying power for lighting the lamp. Placed near the lamp,
Condition detecting means for detecting predetermined conditions related to the lamp;
Notifying means for notifying the operator of the state of the lamp based on the detection result of the condition detecting means.

More preferably, the condition detecting means comprises:
This is a temperature detecting means for detecting whether the temperature of the lamp or the vicinity of the lamp is equal to or higher than a predetermined temperature. Alternatively, the condition detecting means is a power detecting means for detecting whether a current or voltage supplied from the power supply means to the lamp is equal to or less than a predetermined current value or voltage value.

According to this configuration, the user is notified of the lamp state from the temperature detecting means or the power detecting means through the notifying means, so that prompt action can be taken.

[0020]

Embodiments of the present invention will be described below with reference to the drawings.

FIGS. 1 to 7 are views for explaining a first embodiment of the present invention. FIG. 1 is a configuration diagram for explaining the configuration of the electronic endoscope device. FIG. 2 is a diagram for explaining the configuration of the electronic endoscope. FIG. 3 is a block diagram for explaining a configuration inside the endoscope apparatus main body. FIG. 4 is a diagram for explaining a positional relationship between a cooling passage and a lamp provided in the endoscope apparatus body for cooling the vicinity of the lamp. FIG. 5 is a diagram for explaining the operation of the changeover switch of the temperature detection operation unit. FIG. 6 is a diagram illustrating an example of an endoscope observation image. FIG. 7 is a diagram showing an endoscope observation image in a notification state.

As shown in FIG. 1, the electronic endoscope apparatus according to the present embodiment has an insertion portion 1 inserted into a body cavity of a patient for observation.
An electronic endoscope (hereinafter abbreviated as an endoscope) 1 having a built-in solid-state imaging device such as a CCD (hereinafter referred to as a CCD).
, The endoscope apparatus main body 2 and the keyboard 3. The main body 2 includes a processor unit that performs a process of converting an image signal transmitted from a CCD built in the insertion unit 11 into a video signal, a process of displaying an observed image and various data on a monitor (not shown), and the like. And a light source unit having a built-in lamp, which will be described later, for supplying illumination light to the endoscope 1. Keyboard 3
Are connected to the endoscope apparatus main body 2 to input characters and numerals such as patient data and observation data.

As shown in FIGS. 1 and 2, the endoscope 1 has an elongated insertion portion 11, an operation portion 12 connected to the base end of the insertion portion 11, and a side portion of the operation portion 12. And a universal cord 13 extending from the cable.

The insertion portion 11 is formed by sequentially connecting a rigid distal end portion 14, a bendable bending portion 15, and a flexible tube portion 16 having flexibility from the distal end side. The operation section 12 is provided with a bending operation knob 17 for bending the bending section 15. The universal code 1
3 has a device connector 2 of the endoscope device main body 2 at the base end thereof.
a, a connector 18a for detachably connecting an illumination connector 18a for transmitting irradiation light, and a signal connector 18b for inputting and outputting electric signals
Is provided.

A CCD for photoelectrically converting an optical image of the subject of the observation unit into an image pickup signal is provided in the distal end component unit 14 of the insertion unit 11.
19 are arranged. A signal cable 20 extending from the CCD 19 to a signal connector 18b of the endoscope connector 18 is inserted through the insertion portion 11, the operation portion 12, and the universal cord 13. The insertion section 1
1, a light guide 21 for guiding outgoing light emitted from a lamp of the endoscope apparatus main body 2 as illumination light for irradiating the interior of a patient's body cavity within the operation unit 12 and the universal cord 13.
Is inserted.

As shown in FIG. 3, a lamp 22 for supplying illumination light to the light guide 21 is provided in the endoscope apparatus main body 2.
A light source unit 23 provided with the like, a process of generating a video signal based on an imaging signal transmitted from the CCD 19, various controls for displaying an observed image and various data on a monitor,
And a processor unit 30 for performing the same.

The device connector 2a of the endoscope device body 2 is provided with an illumination light connector 2b and an electric signal connector 2c corresponding to the light source unit 23 and the processor unit 30, respectively.

The light source unit 23 includes a lamp 22 that mainly generates illumination light, a lamp power supply unit 24 that is a power supply unit that supplies power to the lamp 22, and a condenser lens 25.
, A cooling fan 26, and a temperature detection operation unit 27. The condenser lens 25 is connected to the device connector 2a.
Endoscope connector 1 connected to the illumination light connector 2b
The light emitted from the lamp 22 is focused on the end face of the illumination connector 18a. The cooling fan 26 is
The heat generated from the lamp 22 is discharged to the outside of the apparatus housing to prevent the temperature of the lamp 22 and the vicinity of the lamp from rising. The temperature detection operation unit 27
A condition detecting means disposed near the lamp 22, which is a temperature detecting means for performing a predetermined switching operation when detecting that the temperature of the lamp or the vicinity of the lamp has exceeded a predetermined temperature.

As shown in FIG. 4, the endoscope device main body 2 is provided with a suction port 28a for taking in air for cooling and the cooling fan 26 to discharge heated air near the lamp to the outside. And a cooling channel 28 formed by providing an exhaust port 28b.

As shown in FIG. 5, the temperature detecting operation unit 2
When the temperature near the lamp is equal to or lower than a predetermined temperature (hereinafter referred to as a normal temperature state), the changeover switch 27a provided in the switch 7 is in a short-circuit state as indicated by a solid line, and the temperature near the lamp is equal to or higher than the predetermined temperature. When a state (hereinafter, referred to as an abnormal temperature state) is detected, a switching operation is performed to open the circuit as indicated by a broken line, and a detection signal is output to the CPU 31. That is, as shown in FIG. 5, the circuit configuration is such that an "L" signal is output to the CPU in a normal temperature state and an "H" signal is output in an abnormal temperature state.

On the other hand, the processor unit 30 includes a CPU 3
1, a signal processing unit 32, and a warning report notification unit 3 as notification means
3 is comprised. The CPU 31 mainly stores data such as lighting control of the lamp 22, patient data, date and time, and a management number input from the keyboard 3. The signal processing unit 32 is connected to the electrical signal connector 2c of the device connector 2a to which the endoscope connector 18 is connected,
Supply of power and drive pulses to the CCD 19;
Upon receiving the image signal output from D19, the image signal is processed into a video signal and output to a display device, and processing such as displaying the date and time and management number input from the keyboard 3 on the screen of the display device is performed. The alarm report notification unit 33 includes the temperature detection operation unit 2
When the abnormal temperature state is detected in step 7, the notification means notifies the user of the abnormal temperature state through the CPU 31.

The operation of the endoscope apparatus main body 2 configured as described above will be described.

When the lamp 22 of the endoscope apparatus body 2 is turned on, the light emitted from the lamp 22 passes through the condenser lens 25 and is applied to the end face of the illumination connector 18a connected to the illumination light connector 2b. The light is collected and the cooling fan 26 starts rotating.

The light condensed on the illumination connector 18a is transmitted by the light guide 21 and emitted from the distal end component 14 of the insertion portion 11 forward as illumination light.

As the lamp 22 continues to be turned on, the temperature of the lamp 22 rises and the temperature near the lamp rises. At this time, the lamp 22
Is disposed in the cooling channel 28 having the suction port 28a and the exhaust port 28b, so that the heated fan near the lamp is exhausted from the exhaust port 28b to the outside by the cooling fan 26, and the suction port is Outside air flows into the vicinity of the lamp from 28a to cool the vicinity of the lamp. As a result, the temperature in the endoscope apparatus main body 2 is maintained at the normal temperature state without increasing to a temperature at which an electronic circuit provided in the housing causes a failure or a failure.

At this time, in the temperature detecting operation section 27,
Since the temperature near the lamp is maintained at the normal temperature, the changeover switch 27a is short-circuited and the signal "L" is output to the CPU 31. Since the signal “L” is input to the CPU 31, the CPU 31 does not output a control signal for urging the warning to the alarm reporting unit 33.

The observation image in the body cavity illuminated by the illumination light forms an image on the imaging surface of the CCD 19 driven by a power supply or a driving pulse supplied from the signal processing unit 32 and is photoelectrically converted into an imaging signal. . This imaging signal is input to the signal processing unit 32 via the signal cable 20, the signal connector 18b, and the electrical signal connector 2c.

The image pickup signal input from the CCD 19 to the signal processing section 32 is subjected to noise reduction processing such as correlated double sampling and processing such as gain control.
The data is output as a video signal to a monitor, which is an external device, together with the data held in 31. As a result, FIG.
As shown in FIG. 7, an endoscopic observation image is displayed on the screen 40 of the display device.

During the observation with the endoscope, if the suction port 28a or the exhaust port 28b or the middle part of the cooling channel 28 is blocked for some reason, or the cooling fan 26 does not operate normally. In this case, the cooling becomes insufficient and the temperature near the lamp rises.

When the temperature of the lamp or the vicinity of the lamp becomes equal to or higher than a predetermined temperature, the temperature detecting operation section 27 reacts to the abnormal temperature state, that is, detects the abnormal temperature state,
The changeover switch 27a is switched from the short-circuit state to the open state. As a result, the temperature detection operation unit 27
Changes from the "L" signal to the "H" signal.

When the CPU 31 receives the "H" signal,
In order to prevent the temperature from rising, the lamp power supply unit 24 is controlled to stop the supply of power to the lamp 22 to turn off the lamp 22 and to output a control signal to the alarm report notification unit 33 to prompt a notification. . Accordingly, the alert notification unit 33 performs a notification operation of notifying the operator that the lamp 22 is turned off due to the abnormal temperature inside the apparatus housing.

That is, the CPU 31 controls the lamp 22
Simultaneously with the control for turning off the lamp, the alarm report notifying unit 33 performs a notifying operation to check that the lamp has been turned off due to an abnormal temperature state on the endoscopic observation image as shown in FIG. A predetermined message, a mark, a symbol (not shown), or the like to be notified to a person or the like is displayed on the message display unit 41 to notify the operator that an abnormality has occurred.
In addition, as a notification method, a predetermined sound may be generated by a buzzer or the like in addition to a message, a mark, or a symbol to notify the operator. In that case, the warning report notifying section 33 is provided with a sound control means.

When the lamp 22 is turned off, there is no heat source, so that the temperature of the lamp 22 and the vicinity of the lamp gradually decrease, thereby avoiding a failure of the electronic circuit.

As described above, the temperature detecting operation section for detecting whether or not the temperature of the lamp or the vicinity of the lamp is equal to or higher than the predetermined temperature is provided near the lamp which is the heat source in the endoscope apparatus body. An alarm reporting unit is provided to notify the operator of the temperature condition when the condition is detected.
Therefore, when a failure occurs in the cooling of the endoscope apparatus body and the temperature of the lamp and the vicinity of the lamp becomes higher than a predetermined temperature, a detection signal is output from the temperature detection operation unit to the CPU, and the lamp is turned off. While preventing a further rise in temperature, the operator can be immediately notified of the cause of the lamp being turned off.

As a result, the operator who has received the notification can take measures to eliminate the problem of cooling and quickly continue the examination.

In this embodiment, when the CPU 31 receives the "H" signal from the temperature detecting section 27, the CPU 31 controls the lamp 22 to be turned off, and at the same time, causes the alarm report section 33 to perform a notification operation. But the CPU
When the “31” receives the “H” signal generated by the temperature detection operation unit 27, the alarm report notification unit 33 first performs a notification operation.
The CPU 3 is controlled in advance so that the amount of light of the lamp is dimmed so as not to hinder observation, or the lamp 22 is turned on until a certain time after which there is no possibility that a failure occurs in an electronic circuit or the like.
1 may store a coping program. Accordingly, when the inside of the apparatus housing becomes in an abnormal temperature state, the operator promptly removes the endoscope insertion portion 11 from the body cavity while watching the endoscopic observation image before the lamp is turned off, and then has room. To deal with cooling problems.

Next, the processor section of the endoscope system according to the first embodiment will be described with reference to a more detailed circuit block diagram.

First, FIG. 8 is a block diagram showing the configuration of the entire endoscope system.

The endoscope 201 converts endoscope images (video signals) of the subject, which are captured by a CCD (not shown) attached to the distal end, into various video signal processing and system control via a video signal cable 202. 204 that performs
Output to The endoscope 201 and the processor 204 are connected by a scope connector 231.

The processor 204 includes a CPU 207, a memory 209, an address bus / data bus (not shown), a memory address coder 208a, and an I / O address coder 2
08b, I / O port (PIO) 223, display controller 206 for drawing characters, keyboard controller (KBC) 212 for controlling a keyboard, light source unit 21
0, connection with a video signal processing unit 205 for performing analog / digital conversion, color correction, contour enhancement, white balance processing, and the like on the video signal obtained from the endoscope 201, an operation panel 213, and various recording devices , A video signal output connector 229b used for connecting a monitor, a keyboard connector 229a used for connecting a keyboard, and the like. These connectors are connected to various recording devices 214 for recording endoscopic image data, a monitor 216 for displaying endoscopic images, and a keyboard 215 for inputting various data and controlling the system.

The light source section 210 supplies illumination light necessary for observation to an observation site. The light source section 210 includes a lamp 227, a lamp power supply section 228, a lamp cooling fan 230, And some lamp abnormality detection means. The lamp light 221 emitted from the light source 210 is
By passing through the condenser lens 217, the light is focused to the optical path hole 237 in the scope connector 231,
The endoscope 201 reaches the distal end portion of the endoscope 201 via the optical disc 03. The light source 210 is controlled by the CPU.

The endoscope image that has been subjected to various kinds of video signal processing by the video signal processing unit 205 is once input to the display controller 206. Here, the display controller 2
Reference numeral 06 superimposes patient data, date and time, various messages, and the like on the endoscope image, and outputs the result to the monitor 216 and the recording device 214 via the video signal output connector. The display controller 206 is controlled by the CPU 207.

When controlling the lighting of the lamp, it is necessary to take a countermeasure on the assumption that an abnormality occurs in the light source section 210. A countermeasure when an abnormal lamp temperature (excessive heat) occurs will be described with reference to FIG. FIG. 9 shows FIG.
FIG. 3 is a diagram showing a specific configuration of a light source unit 210 in the middle.

A serial signal including a control signal for turning on / off the lamp 227 is output from the CPU 207 to a serial / parallel converter (hereinafter, also referred to as SPC) 218.
In the serial / parallel converter (SPC) 218,
After the serial signal is converted into a parallel signal, a lamp lighting control signal 219 is output to the lamp power supply unit 228 to control the lighting / extinguishing of the lamp 227. When the lamp 227 is turned on, the lamp light is condensed in the optical path hole 37 of the scope connector 31 by transmitting through the condenser lens 217, and emitted from the end of the endoscope 201 via the light guide 3. The lamp 227 is cooled by a lamp cooling fan 230 to prevent the temperature of the lamp 227 and its surroundings from becoming abnormally high.

However, if the lamp cooling fan 230 fails or an abnormal temperature rise exceeding the cooling capacity of the lamp cooling fan 230 occurs, there is a possibility that the filament of the lamp 227 is blown or the circuit around the lamp is damaged.

Therefore, a lamp temperature detector 224 is provided in the vicinity of the lamp 227, and the lamp 22 is turned on when the lamp 227 is turned on.
7 and its surrounding temperature are constantly monitored, and if the temperature of the lamp 27 exceeds a predetermined value, the lamp temperature error signal 220
a is output to the PIO 223. The lamp temperature error information reaches the CPU 207. When the CPU 207 detects the lamp temperature error, the CPU 207 immediately displays a warning message of the occurrence of the lamp temperature error on the monitor 216 to the user via the display controller 206. By visually appealing for the occurrence of the abnormality from the monitor 16, the user can quickly detect the abnormality of the system and respond quickly.

If an abnormal lamp temperature occurs, there is a risk of fusing the filament or damaging the circuit. Therefore, it is desirable to immediately stop using the system and turn off the power. Therefore, when a lamp temperature abnormality occurs, the operation of the operation panel 213 (for example, turning on / off the pump, switching the dimming mode, and the like).
However, the operation panel information transmitted to the CPU 207 via the PIO 223 may be ignored on the CPU 207 side to prompt the user to immediately stop using the system. Further, after a certain period of time (for example, 60 seconds) after the occurrence of a lamp temperature abnormality, the lamp 22
By turning off the light 7, the fusing of the filament and the breakage of the circuit may be reliably prevented.

However, here, the lamp temperature error signal 220
When transmitting a to the CPU 207 via the PIO 223 (using a parallel signal) and transmitting the lamp lighting control signal 219 to the lamp power supply unit 228 via the SPC 218 (using a serial signal), a lamp temperature error signal is generated. 220a serial signal and lamp lighting control signal 2
A parallel signal may be used for transmission of the signal 19, both may be serial signals, or both may be parallel signals.

In addition to displaying a message on the monitor 216, a warning LED may be provided on an operation panel or the like as a warning means when a lamp temperature abnormality occurs. May be used, or a combination thereof.

FIG. 10 is a flowchart showing the processing by the CPU when a lamp temperature abnormality occurs.

After the power is turned on, first, the lamp temperature detector 22
4 to the PIO 223, the lamp temperature error signal 220a
Is output as “L”. This is because, since the lamp temperature error signal 220a is of positive logic, it is necessary to reset the lamp temperature abnormality detection operation by first setting this to "L" immediately after turning on the power. After the lamp temperature error signal 220a is set to "L", the lamp temperature detection unit 2
At 24, detection of the lamp temperature is started. As a result of the lamp temperature detection, if the lamp temperature is equal to or lower than a predetermined value (that is, within an appropriate temperature range), “L” is output as the lamp temperature error signal 220a. Thereafter, detection of the lamp temperature is performed. Therefore, unless a lamp temperature abnormality occurs, the lamp temperature detection is continuously performed continuously.

On the other hand, when the lamp temperature becomes equal to or higher than a predetermined value (that is, an abnormal lamp temperature occurs), the lamp temperature detecting section 2
24 to the PIO 223, the lamp temperature error signal 220
"H" signal is output as a. This "H" signal is
When supplied to the PU 207, the result of step (hereinafter abbreviated as “S”) 101 becomes YES, and the CPU 207 displays a message of “abnormal lamp temperature” on the monitor 216 via the display controller 206 (S 102). If a lamp temperature abnormality occurs, the operation of the operation panel
PIO 22 assigned to communicate to PU 207
The port 3 is invalidated (S103). Further, 60 seconds after the occurrence of the lamp abnormality, the CPU 207 sets the lamp power supply unit 2
28 is forcibly turned off (S104), and the lamp 27 is turned off. As a result, the temperature of the lamp 27 in the abnormally overheated state drops, and it is possible to avoid the fusing of the filament, the breakage of the circuit, and the like.

After the power is turned on, the temperature signal from the lamp temperature detecting unit is converted from analog to digital and converted into a CPU signal.
7, and the CPU 207 may detect whether the temperature exceeds a predetermined value.

Next, a second embodiment will be described.
FIGS. 11 to 13 are views for explaining a second embodiment of the present invention. FIG. 11 is a block diagram for explaining a configuration inside the endoscope apparatus main body. FIG. 12 is a diagram for explaining a state in which tungsten of the lamp is blown. FIG. 13 is a view for explaining a state in which a welded portion is formed on tungsten of a lamp.

As shown in the figure, in the light source section 23a of the endoscope apparatus main body 2A of the present embodiment, instead of the temperature detecting operation section 27 of the first embodiment provided near the lamp 22, a condition detecting means is used. A power detection operation section 51 as power detection means is provided.

The power supply detection operation section 51 operates in a state where the voltage and current supplied from the lamp power supply section 24 to the lamp 22 are lower than a predetermined voltage value or current value (hereinafter, such a state when the lamp is abnormal). Is detected, the power supply detection operation unit 51 is operated in the same manner as the temperature detection operation unit 27.
, And outputs a detection signal to the CPU 31. That is, the power detection operation unit 51
When the lamp is normal, the CPU 31 outputs “L”.
This is a circuit configuration that outputs a signal and outputs an “H” signal when the lamp is abnormal. Other configurations are the same as those of the first embodiment, and the same members are denoted by the same reference numerals and description thereof will be omitted.

The endoscope apparatus main body 2A configured as described above
The operation of will be described.

When power is supplied to the lamp 22 of the endoscope apparatus main body 2A, the power supply detection operation section 51 detects the state of the lamp 22, and when it is detected that the lamp is not abnormal, the CPU 31 outputs "L". Output a signal. This allows
The CPU 31 controls the lamp power supply unit 24 to control the lamp 2.
2 is turned on.

Then, the light emitted from the lamp 22 passes through the condenser lens 25 and is condensed on the end face of the illumination connector 18a connected to the illumination light connector 2b, transmitted through the light guide 21 and transmitted to the insertion section 11 Is irradiated as illumination light from the front end component 14 toward the front.

However, the lamp 22 has a limitation on the time during which it can be turned on, that is, a lamp life. Therefore, when the lamp 22 is turned on and observation is continued, the lamp 22 always reaches the end of its life.

When the lamp 22 is a halogen lamp,
As shown in FIG. 9, when the lamp 22 reaches the end of its life, the tungsten 52 is blown and becomes open to stop current from flowing, or as shown in FIG. A weld 53 is formed. At this time, since the resistance value of the tungsten 52 decreases, the applied voltage of the lamp 22 becomes lower than an appropriate value, and the light amount of the lamp 22 decreases.

That is, when the applied current or applied voltage of the lamp 22 decreases due to the fusing or the welding portion 53 of the tungsten 52, the power supply detecting operation unit 51 detects a lamp abnormality and the CPU 31 The output signal is switched from the "L" signal to the "H" signal which is a signal at the time of lamp abnormality.

As a result, the CP receiving the "H" signal
At U31, a control signal for urging the warning to be sent to the alarm report notification unit 33 is output. Thus, the warning notification unit 33 performs a notification operation to notify the operator that the lamp 22 is turned off or the light amount is reduced due to the lamp abnormality.

That is, the CPU 31 controls the lamp 22
Simultaneously with the control to turn off the lamp, the alarm report notifying unit 33 performs a notifying operation, and as shown in FIG. 7, the lamp 22 is turned off or the amount of light is reduced due to a lamp abnormality on the endoscopic observation image. A predetermined message, a mark, a symbol (not shown), or the like that informs the operator or the like is displayed on the message display unit 41 to notify the operator that an abnormality has occurred. In addition, the notification method is a message,
A predetermined sound may be generated by a buzzer or the like in addition to the mark or the symbol to notify the operator. In that case, the warning report notifying section 33 is provided with a sound control means.

As described above, the power supply detecting section for detecting the lamp abnormality is provided in the endoscope apparatus main body, and the alarm report notifying section for notifying the operator of the lamp abnormality is provided. When the lamp is turned off or the amount of light decreases due to the occurrence of, the cause can be promptly notified to the operator.

As a result, the operator who has received the notification can take measures to replace the lamp and quickly continue the examination.

Next, the light source section of the endoscope system according to the second embodiment will be described in more detail. Figure 1
FIG. 4 is a diagram illustrating a specific configuration of a light source unit of the endoscope system according to the second embodiment. Other configurations are the same as those of the first embodiment, and the same components as those shown in FIGS. 8 and 9 are denoted by the same reference numerals and description thereof is omitted.

A countermeasure when an abnormal lamp current or abnormal lamp voltage occurs will be described with reference to FIG. FIG. 14 shows a specific configuration of the light source unit 210 in FIG.
The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted.

In the lamp 227, the filament may be blown depending on the life or the like. In some cases, the filament is welded immediately after fusing. In the former case, since no current flows through the filament, the lamp 227 does not turn on (abnormal current). In the latter case, the current flows but the resistance of the filament decreases. Light intensity cannot be obtained (abnormal voltage). Therefore, in both the case of the abnormal current and the case of the abnormal voltage, it is not possible to perform appropriate observation, and it is necessary to notify the user who is the surgeon of this.

Therefore, the current and voltage of the lamp 227 are constantly monitored. That is, when a current abnormality occurs, the lamp current detection unit 226 detects this, and outputs a lamp current error signal 220c to the PIO 223. Further, when a voltage abnormality occurs, the lamp voltage detection unit 225 detects this, and outputs a lamp voltage error signal 220b to the PIO 223. The CPU 207 receiving the lamp error information from the PIO 223 immediately displays a lamp current / voltage error occurrence warning message on the monitor 216 to the user via the display controller 206.
By visually appealing the occurrence of the abnormality from the monitor 216, the user can quickly detect the abnormality of the system and take appropriate measures such as replacing the lamp.

However, as a warning means when a lamp current / voltage abnormality occurs, not only a message is displayed on the monitor 216, but also a warning LED may be provided on an operation panel or the like to give a visual warning. , A visual warning means using a buzzer, or a combination thereof.

FIG. 15 is a flowchart of the processing of the CPU when a lamp current / voltage abnormality occurs.

After the power is turned on, an “L” signal is output from the lamp current detector 226 to the PIO 223 as a lamp current error signal 220 c.
5 to the PIO 223, the lamp voltage error signal 220b
And an “L” signal is output. This is because both the lamp current error signal 220c and the lamp voltage error signal 220b are of positive logic, so that they are first turned on immediately after power-on.
It is necessary to reset the lamp current / voltage abnormality detection operation by setting L ”to“ L ”. Both the lamp current error signal 220c and the lamp voltage error signal 220b are set to“
After "L", the lamp current detection unit 226 and the lamp voltage detection unit 225 start detecting the lamp current and the lamp voltage, respectively. As a result of the lamp current detection, if the lamp current is "0" (current abnormality). For example, an "H" signal is output to the PIO 223 as the lamp current error signal 220c, and the output of the "H" signal is transmitted to the CPU 207. In the CPU 207, the output of the "H" signal indicates that the lamp current has been output. Is determined to be “0”, the result is YES in S111, and if the result is YES in S111, “a lamp current / voltage abnormality has occurred” is displayed on the monitor 216.
The display controller 2 displays a message ("Lamp current abnormality may occur") on the monitor 216.
Then, a control signal is output to 06 (S113).

On the other hand, even if the lamp current is a normal value in S111, if the lamp voltage falls below a predetermined value (voltage abnormality), "H" is set to PI as the lamp voltage error signal 220b.
Output to O223. The lamp voltage error signal 22
When the CPU 207 receives 0b, the CPU 207 sends a control signal to the display controller 206 to display a message of “lamp current / voltage abnormality” (or “lamp voltage abnormality”) on the monitor 216 on the monitor 216. Output (S113).

If an error message "abnormal lamp current / voltage" is displayed in S113, the user must immediately turn off the power and replace the lamp in order to continue the inspection. If you turn off the monitor 21
6 to delete the error message from above, a predetermined key of the keyboard 215 (for example, an “Esc” key)
By pressing, the message is deleted. Therefore, the CPU 207 determines whether a predetermined key for message deletion has been pressed (S11).
4) If the predetermined key is not pressed and the power is not turned off, the result of S114 is NO, and the error message remains displayed on the monitor 216. When a predetermined key is pressed, YES is determined in S114, and the error message on the monitor 216 is deleted.

When the lamp current detection result is a normal value and the lamp voltage detection result is equal to or more than a predetermined value, that is, when there is no abnormality in the lamp 227, the PIO 223
On the other hand, the lamp current error signal 220c and the lamp voltage error signal 220b both output an "L" signal.
Then, the side lamp current / voltage is detected (feedback to S202). Therefore, unless an abnormality occurs in the lamp 27, the lamp current / voltage detection is continuously performed.

Next, a third embodiment will be described.

FIGS. 16 to 18 are views for explaining the third embodiment of the present invention. FIG. 16 is a block diagram for explaining a configuration of an endoscope apparatus main body including two lamps. FIG. 17 is a diagram for explaining a state in which the first lamp is used as an illumination lamp. Figure 1
FIG. 8 is a diagram for explaining a state in which the second lamp is used as an illumination lamp.

As shown in FIG. 16, the light source 23b of the endoscope apparatus main body 2B of the present embodiment is provided with two lamps for supplying illumination light, and one of the lamps is used for observation. When the lamp is turned off, even if the lamp becomes unusable in the middle, the lamp is switched so that observation can be continued.

The light source 23b of the endoscope apparatus main body 2B
Are two lamps 61a and 61b and a lamp holder 62
, A lever 63, a first lamp position detecting section 64a and a second lamp position detecting section 64b, which are condition detecting means disposed near the respective lamps 61a and 61b, and a lamp power supply section 24a. . Lamp holder 6
Reference numeral 2 denotes a lamp holding member formed so that the lamps 61a and 61b can move in a predetermined direction in the endoscope apparatus main body. The lever 63 has one end fixed to the lamp holder 62, the grip 63 a at the other end is disposed on the front panel 2 d side, and the grip 63 a slides to illuminate the lamp 61 a or the lamp 61 b. It is a moving operation member arranged in the optical path. The first lamp position detector 64a outputs a detection signal to the CPU when the lamp 61a is located at a predetermined position in the illumination optical path.
A lamp position detecting means for outputting to 31. The second lamp position detector 64b outputs a detection signal when the lamp 61b is located at a predetermined position in the illumination optical path.
1 is a lamp position detecting means for outputting to 1. The lamp power supply unit 24a selectively supplies power to the lamp 61a or the lamp 61b based on a control signal from the CPU 31 that has received the detection signals output from the lamp position detection units 64a and 64b.

The first lamp position detecting section 64a and the second lamp position detecting section 64b operate a changeover switch (not shown) in the same manner as the temperature detecting section 27 and the power detecting section 51 to operate the CPU 31. Output the detection signal.

The first lamp position detector 64a and the second lamp position detector 64a
C to which the detection signal from the lamp position detector 64b is input
When receiving the detection signal from the first lamp position detection unit 64a, the PU 31 outputs a control signal for supplying power to the lamp 61a to the lamp power supply unit 24a, and the detection signal from the second lamp position detection unit 64b. When it receives the control signal, it outputs a control signal for supplying power to the lamp 61b to the lamp power supply unit 24a. When neither the first lamp position detector 64a nor the second lamp position detector 64b receives a detection signal, that is, both the lamps 61a and 61b are arranged at predetermined positions in the illumination light path. If not, a control signal is output to the warning report notification unit 33 to prompt the operator to output a display notifying that neither lamp is located at the predetermined position.

As described above, the logical operation of the lamp and the lamp position detector is as follows.

When the first lamp position detector 64a is in the detection state and the second lamp position detector 64b is in the non-detection state,
The lamp 61a is turned on. On the other hand, when the first lamp position detector 64a is in the non-detection state and the second lamp position detector 64b is in the detection state, the lamp 61b is turned on. When the first lamp position detector 64a and the second lamp position detector 64b are both in the non-detection state, the lamps 61a,
61b is a non-lighting state. At this time, since neither of the lamps is located at the predetermined position, the CPU 31 outputs a control signal for notifying the alarm reporting unit 33 of the abnormality.

When both the first lamp position detecting section 64a and the second lamp position detecting section 64b are in the detecting state, the CPU 31 outputs a control signal to notify the alarm reporting section 33 of the abnormality also in this case.

Therefore, as shown in FIGS. 16 and 17, when the lamp 61a is arranged at a predetermined position in the illumination light path and is turned on, the other lamp 61b enters a standby state at a position deviating from the illumination light path. At this time, the gripping portion 63a of the lever 63 disposed in the lever moving groove 66 provided in the lower part of the front panel 2d of the endoscope apparatus main body 2B.
Are located at the left end of the lever movement groove 66 in the figure. As described above, by operating the lever 63, a lamp is selected from a plurality of lamps included in the endoscope apparatus, and the selected lamp is arranged in the illumination optical path, and another lamp that is not selected is illuminated. The lamp holder is moved so as to be located at a standby position outside the path.

When the lamp 61b is arranged in the illumination light path and turned on, the grip 63a of the lever 63 is moved to the lever moving groove 66 in FIG.
Move to the right end of At this time, when the first lamp position detector 64a is in the non-detection state and the second lamp position detector 64b is in the detection state, the lamp 61b is turned on.

The other structures are the same as those of the first and second embodiments described above, and the same members are denoted by the same reference numerals and description thereof will be omitted.

The endoscope apparatus main body 2B configured as described above
The operation of will be described.

First, one of the lamps, for example, the lamp 61a
As shown in FIG. 17, the grip portion 63a of the lever 63 disposed on the front panel 2d is positioned at the left end of the lever movement groove 66 in order to arrange in the illumination optical path. At this time, while the first lamp position detector 64a is in the detection state, the second lamp position detector 64b is in the undetected state,
The CPU 31 controls the lamp power supply unit 24a to supply power only to the lamp 61a. As a result, the lamp 61a is turned on, and the light emitted from the lamp 61a is transmitted through the condenser lens 25, the light guide 21, and the like, and is emitted from the distal end component 14 toward the front as illumination light.

During the inspection with the endoscope, the lamp 61a
May be cut due to the life or the like. in this case,
As shown in FIG. 18, an operation is performed to move the grip portion 63 a of the lever 63 disposed on the front panel 2 d to the right of the lever movement groove 66. Then, the lamp holder 62
Are slid in the same direction, the lamp 61a is displaced from the illumination light path, and the lamp 61b that has been on standby moves into the illumination light path.

At this time, the first lamp position detector 64
a is in an undetected state, and the second lamp position detector 6
When 4b enters the detection state, a control signal is output from the CPU 31 to the lamp power supply 24a, and instead of supplying power from the lamp power supply 24a to the lamp 61a, power is supplied to the lamp 61b. As a result, the lamp 61b is turned on and the observation with the endoscope can be continued.

If the switching operation is interrupted while the gripping portion 63a of the lever 63 is being slid, if neither of the lamps 61a and 61b is arranged in the illumination light path, that is, Since the first lamp position detector 64a and the second lamp position detector 64b are in the non-detection state, the CPU 31 outputs a control signal for notifying the warning to the alarm reporting unit 33, and the lamp power supply unit 24a transmits the lamp 61a, The supply of power to 61b is stopped. At this time, a predetermined message notifying the operator or the like that the lamp is turned off due to an abnormal lamp position is displayed on the message display section 41 on the endoscopic observation image as shown in FIG. A buzzer sound is issued at the same time. In that case, the warning report notifying section 33 is provided with a sound control means.

The first lamp position detecting section 64a and the second lamp position detecting section 64b enter an undetected state when switching occurs. Therefore, in order to prevent the notification message from being displayed or the buzzer from being issued during the switching, the first lamp position detection unit 64a and the second lamp position detection unit 64b are set to the non-detection state. After a lapse of a predetermined time, a control signal is output from the CPU 31 to the alarm report notification unit 33. The predetermined time is a time sufficient for the operator or a person concerned to perform the lamp switching operation. Within this predetermined time, the first lamp position detecting section 64a and the second lamp position detecting section 64b
Is not detected, the message indicating that the lamp is off due to the abnormal lamp position is not displayed on the message display unit 41.

As described above, in a case where a plurality of lamps are provided in preparation for the lamp being cut out during the inspection by the endoscope and the arrangement position of the lamps can be switched by the user, the lamps are arranged at predetermined positions in the illumination optical path. In addition to providing a lamp position detecting unit for detecting whether or not the lamp is turned on, a warning reporting unit for notifying an operator that the lamp position is abnormal is provided. Thus, if the lamp is turned off because the lamp position is not located at the predetermined position, the cause can be promptly notified to the operator.

As a result, the operator who has received the notification can take measures such as adjusting the lever position and quickly continue the examination.

Next, the light source section of the endoscope system according to the third embodiment will be described in more detail. Figure 1
FIG. 9 is a diagram showing a specific configuration of a light source unit of the endoscope system according to the third embodiment. Other configurations are the same as those of the first and second embodiments, and the same components as those shown in FIGS. 8 and 9 are denoted by the same reference numerals and description thereof is omitted.

A countermeasure in the event of a lamp position abnormality will be described with reference to FIG. FIG. 19 is a diagram showing a specific configuration of the light source unit 210 in FIG. The same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof will be omitted.

As described in the second embodiment, there is a possibility that the lamp cannot be used due to fusing of the filament. Therefore, as a countermeasure, the system should be equipped with two lamps in advance (A lamp and B lamp), and a mechanism should be provided so that even if one lamp becomes unusable, it can be replaced with the other lamp immediately. Is valid.

Accordingly, the A lamp 227a and the B lamp 22
7b are provided. The lighting control method for each of the two lamps is the same as the lamp control method of the first embodiment.
That is, by outputting a lighting control signal from the CPU 207, the A control signal is output via the SPC 218 and the lamp power supply unit 228.
Lighting / extinguishing of the lamp 227a and the B lamp 227b is controlled. However, the condition for turning on the lamp 227a or 227b is that the lamp 22 is placed on a predetermined optical path 236.
7a or 227b is located. FIG.
The lamp lighting control based on this condition will be described with reference to FIG. FIG. 20 shows that the B lamp 227b is in the optical path 2
FIG. 14 is a diagram for explaining a case in which the position is located on a line 36; FIG.
FIG. 1 is a diagram for explaining a case where the A lamp 227a is located on the optical path 236.

When one of the two lamps becomes unusable, it is desirable to be able to replace the lamp quickly and easily. Therefore, first, the A lamp 227a and the B lamp 227b are fixed to the lamp holder 233. The lamp 227 and the lamp holder 233 have a mechanism that can be easily attached and detached (not shown). Lamp holder 233
Is mounted on the slide rail 234 and can move smoothly on the slide rail 234 only in the rail direction. The lamp holder 233 is provided with a lamp lever 235. When the user grips and moves the lamp lever 235 left and right, the lamp holder 233 also moves left and right on the slide rail 234. The A lamp 227a and the B lamp 227b fixed to the lamp holder 233 also move left and right on the slide rail 234 in synchronization with this movement.

On the other hand, the optical path 236 in the present system refers to a line connecting the center of the condenser lens 217 and the optical path hole 237. The optical path 236 and the slide rail 234 are orthogonal. When the center of the A lamp 227a or the B lamp 227b is located on the optical path 236, the light guide 20
The light quantity of the lamp light emitted to 3 becomes maximum. In order to obtain a clear endoscopic image, it is desirable that the amount of lamp light is maximum during observation. Therefore, it is necessary to position the lamp 227 on the optical path 236 during observation. Conversely, when the lamp 227 is out of the optical path 236, it is not optimal observation conditions, and thus it is desirable that the lamp 227 be prohibited from lighting. Therefore, it is assumed that only when the A lamp 227a or the B lamp 227b is located on the optical path 236, that lamp is turned on. Thereby, the present system can always provide the user with an optimal endoscopic image.

As means for the CPU 207 to detect whether or not the lamp is positioned on the optical path 236, a lamp position detecting terminal and a lamp holder terminal are provided as a pair. Lamp holder terminal 229a and lamp holder terminal 22
9b is fixed to the lamp holder 233. Therefore, when the user grips the lamp lever 235 and moves the lamp holder 233, the lamp holder terminal 229 also moves. On the other hand, the position detection terminal 211a of the A lamp contacts the lamp holder terminal 229a only when the A lamp 227a is located on the optical path 236 as shown in FIG.
The B lamp position detection terminal 211b is connected to the lamp holder terminal 22 only when the B lamp 227b is positioned on the optical path 236.
9b is fixed inside the endoscope apparatus main body so as to be in contact with 9b. Therefore, a state where the lamp position detection terminal 211 and the lamp holder terminal 229 forming a pair are in contact with each other is a state where the lamp can be turned on. However, the movable range of the lamp holder 233 is limited, and the lamp holder terminal 229a and the B lamp position detection terminal 211b or the lamp holder terminal 229b and the A lamp position detection terminal 2
There is no contact with 11a. A lamp position detector 2
32a outputs an A lamp position error signal 220d to the PIO 223 when the A lamp position detection terminal 211a and the lamp holder terminal 229a are not in contact with each other. The B lamp position detecting section 232b is connected to the B lamp position detecting terminal 21.
1b and the lamp holder terminal 229b are in a non-contact state,
B ramp position error signal 220e for PIO 223
Is output. PIO 223 is a lamp position error signal 2
20 is output to the CPU 207, and the CPU 207 selects a lamp whose lamp position is not in error, and instructs to light only the selected lamp.

The specific relationship between the lamp position and the lighting instruction is as shown in the following table.

[0115]

【table】

In the case of i), the A lamp 227a located on the optical path 236
Is turned on, and in the case of ii), the B lamp 227b located on the optical path 236 is turned on. In the case of iii), since both lamps are outside the optical path 236, both lamps remain off. iii) is a state of an abnormal lamp position, and at this time, the amount of lamp light emitted from the end of the endoscope 201 is insufficient for observation. Therefore, the CPU 207
Displays a warning message on the monitor 216 via the display controller 206 that a lamp position abnormality has occurred. By visually appealing the occurrence of an abnormality from the monitor 216, the user can quickly detect the abnormality of the system and perform processing such as moving the lamp to an appropriate position.

However, as a warning means when a lamp current / voltage abnormality occurs, not only a message is displayed on the monitor 216 but also a warning LED may be provided on an operation panel or the like to give a visual warning. Audible warning means using a buzzer may be used, or a combination thereof may be used.

FIG. 22 is a flowchart of the processing by the CPU when a lamp position abnormality occurs.

After the power is turned on, the A lamp position detector 232a
To PIO 223 from A ramp position error signal 220d
Is output as “H”, and the B lamp position detection unit 23
2b to PIO 223, B ramp position error signal 22
"H" is output as 0e (both signals are positive logic). Thus, the CPU 207 causes the lamp power supply unit 22 to operate.
8 is instructed to turn off the two lamps. That is, immediately after the power is turned on, the two lamps A and B are considered to be in the position abnormal state, and immediately after the start, the two lamps are always turned off.

Next, the B lamp position detecting section 232b
When the position of the lamp is detected and the B lamp is on the optical path 236, the lamp B is detected from the B lamp position detection terminal 211b.
“H” is output to the position detector 232b. At this time, the B lamp position detector 32b sends the B
An "L" signal is output as the lamp position error signal 220e. At this time, since the A lamp cannot be located on the optical path 236, the A lamp position
2a to PIO 223, A ramp position error signal 22
An “H” signal is output as 0d.

The CPU 207 stores the table data and the PI
Based on these information from O223, it is determined whether or not the B lamp is at an appropriate position. In the case described above, the CPU
At 207, it is determined that the B lamp is at the proper position,
YES is obtained at 121. Then, the CPU 207 executes the SP
A serial signal for instructing to turn on the lamp is output to C218 (S125). The SPC 218 converts this serial signal into a parallel signal, and supplies it to the lamp power supply unit 228.
, A B lamp lighting instruction signal is output. Thereby, the B lamp is turned on.

On the other hand, in S121, the B lamp is turned on the optical path 236.
If not, an “L” signal is output from the B lamp position detection terminal 211b to the B lamp position detection unit 232b. At this time, the PIO is output from the B lamp position detector 232b.
223 as a B lamp position error signal 220e "
An H ″ signal is output.

Further, when the A lamp is on the optical path 236, "H" is output from the A lamp position detecting terminal 211a to the lamp position detecting section 232a. Then, “L” is output from the A lamp position detection unit 232 to the PIO 223 as the A lamp position error signal 220d.

The CPU 207 stores the table data and the PI
Based on these pieces of information from O223, it is determined whether the A lamp is at an appropriate position. In the case described above, the CPU
At 207, it is determined that the A lamp is at the proper position,
YES is at 122. Then, A
A serial signal instructing to turn on the lamp is output (S1
23). As a result, the A lamp is turned on.

At S122, the A lamp is turned on the optical path 23.
6 is not on the A lamp position detection terminal 211a.
“L” is output to the lamp position detector 232a. At this time, the AIO position detection unit 232a
223 to “H” as the lamp position error signal 220 d
A signal is output. In this case, both the A lamp and the B lamp are off the optical path 236. PIO223
CPU 207 that has received these pieces of information
A serial signal for instructing to turn off both the A lamp and the B lamp is output to 218 (S124). The SPC 218 converts this serial signal into a parallel signal, and outputs an instruction to turn off both the A lamp and the B lamp to the lamp power supply unit 228, so that both lamps are not turned on. Then, the CPU 207 displays a warning message of “abnormal lamp position” on the monitor 216 via the display controller 206 (S126).

After the lamp A is turned on, the lamp B is turned on, or a lamp position abnormality occurrence message is displayed, the lamp position is detected again (return to S121). Therefore, the detection of the lamp position is continuously performed at all times.

By the way, in the electronic endoscope apparatus, an isolation circuit is necessary for transmitting and receiving signals between the patient circuit and the secondary circuit. When an electronic endoscope apparatus uses a digital signal processor (DSP), an application circuit is mainly determined. If the application circuit is divided in the middle of the application circuit, a large number of signals to be transmitted and received are generated. There was an inconvenience that the size increased accordingly. For this reason, it has been desired to reduce the size of the insulating circuit. For this reason, in the embodiment described above, as shown in FIG. 23, the transmission of the video signal to and from the secondary circuit is transmitted as a Y / C signal through the isolation circuit. FIG. 23 is a block diagram for explaining a schematic configuration of the electronic endoscope device.

That is, as shown in FIG. 23, the electronic endoscope apparatus mainly includes the endoscope 1, the processor section 30, the endoscope apparatus main body 2, and the like. The processor unit 30 performs a process of converting an imaging signal transmitted from the CCD 19 built in the endoscope 1 into a video signal, a process of displaying an observed image and various data on a monitor (not shown), and the like. The endoscope apparatus main body 2 is formed, for example, integrally with a light source unit 23 having a built-in lamp for supplying illumination light to the endoscope 1.

The operation section 12 of the endoscope 1 is provided with a white balance adjustment switch (hereinafter abbreviated as WB switch) 12a for giving an adjustment value when the processor section 30 performs white balance adjustment on the video signal. Have been.

The processor section 30 which is a patient circuit in the endoscope apparatus main body 2 is provided with a crystal oscillator (also referred to as CXO) 81 for generating a reference clock.
The reference clock signal generated from XO81 (hereinafter referred to as reference C)
K signal) is supplied to a timing generator (also referred to as TG) 82 in the patient circuit and a video signal processing DSP 80 having a function of obtaining a video signal that can be displayed on a monitor.

The timing generator 82 generates a CCD drive signal based on the reference CK signal, and drives the CCD 19 via the CCD driver 83 at that timing. The CCD 1 driven at this timing
9 generates an output signal corresponding to the subject. The CCD 19 has, for example, cyan (Cy) as a filter,
Complementary filters for yellow (Ye), magenta (Mg), and green (G) are provided.

The electric charge imaged and accumulated on the light receiving surface of the CCD 19 is interlaced readout by two-line simultaneous readout according to the drive signal output from the CCD driver 83, and is sent to the processor 30 via the signal cable 20. Transmitted.

The transmitted image signal is first transmitted to the preamplifier 8
In step 4, the signal is amplified with a predetermined gain to compensate for the loss caused by the transmission of the signal cable 20, and a CDS (correlated double sampling) circuit 85 performs a process of extracting a video signal component from the image signal, and an AGC (auto gain) Control) circuit 86.

The video signal input to the AGC circuit 86 is
After adjusting the level of the video signal by adjusting the gain,
The video signal is output to the color separation circuit 88 of the video signal processing DSP 80 by converting the video signal from an analog signal to a digital signal.

The color separation circuit 88 converts the input video signal into a luminance signal Y, a color difference signal RY, and a color difference signal BY. The color difference signals separated by the color separation circuit 88 are in a line-sequential state of RY and BY. That is, it is a line-sequentialized color difference signal in which the RY and BY signals are output alternately for each line, and this line-sequentialized color difference signal is output to the synchronization circuit 89.

The color difference signal input to the synchronization circuit 89 is synchronized with the RY and BY signals by switching the output destination for each line in accordance with the reference CK signal sent from the timing generator 82. Is output to a WB (white balance) circuit 90 as a synchronized color difference signal.

In the WB circuit 90, the level of the white balance of the input synchronized color difference signal is adjusted. This W
In the B circuit 90, the WB
By pressing the switch 12a, the respective gains are adjusted so that RY and BY become equal. Then, the color difference signal whose level has been adjusted is converted to a D / A converter 91.
Is output to

On the other hand, the luminance signal after color separation by the color separation circuit 88 passes through the D / A
It is output to the conversion unit 91.

The luminance signal and the RY and BY line-sequential color difference signals input to the D / A converter 91 are converted from digital signals to analog signals. Then, the digitized RY and BY line-sequential color difference signals are
3, and the digitized luminance signal is output to the isolation circuit 94.

The encoder 93 orthogonally modulates the RY and BY line-sequential color difference signals and outputs them as color signals (C signals) to an isolation circuit 94 capable of transmitting a high-frequency analog signal.

As a result, the isolation circuit 9
4 is in the form of a luminance signal Y and a color signal C in an analog state. Therefore, the analogized luminance signal Y and color signal C are transmitted from the isolation circuit 94 to the secondary circuit.

The luminance signal and the chrominance signal transmitted to the secondary circuit are input to a 75Ω driver 95 and a mixer 96, respectively. The mixer section 96 combines the luminance signal and the chrominance signal to generate a VBS (composite video signal). Since the mixer 96 has a built-in 75Ω driver, VBS is directly used as a monitor output.

Thereafter, the signal is guided to a connector (not shown) connected to an external device, and a VBS signal and a Y / C separated video signal are output from the endoscope apparatus main body 2.

As described above, the chrominance signal is modulated in the patient circuit, the RY and BY line-sequential chrominance signals are converted into C signals, and the luminance signal and the chrominance signals converted into analog signals from the isolation circuit. Is transmitted to the secondary circuit, thereby reducing the number of transmission paths. Other configurations are the same as those of the other embodiments described above, and the same members are denoted by the same reference numerals and description thereof will be omitted.

By the way, in the electronic endoscope apparatus, not only an endoscope image but also patient data and the like are displayed on the screen of the monitor. When the patient data is input via an input device such as a keyboard, the monitor is used. For this reason, the monitor of the electronic endoscope apparatus is required to be easy to see, and at the same time, operability and ease of use combined with a keyboard are desired.

FIG. 24 is a diagram for explaining the configuration of the electronic endoscope apparatus. As shown in FIG. 24, the electronic endoscope device 100 includes an electronic endoscope 101, a processor 102,
A monitor 103 connected to the processor 102 for displaying an endoscope image and the like; and a keyboard 1 connected to the processor 102 for inputting various data and controlling the system.
04 and various recording devices 1 for recording endoscope image data and the like
05. The processor 102 includes a CCD (not shown) built in the distal end of the electronic endoscope 101.
And a circuit for processing the endoscopic image of the subject imaged by the CCD into a predetermined video signal.

The processor 102 includes at least a video signal processing unit 111 for performing analog / digital conversion, color correction, contour emphasis, white balance processing, and the like on a video signal obtained from the electronic endoscope 101, and a CPU (central processing unit). A unit) 112, a memory 113, an address bus and a data bus (not shown) not shown, a memory address coder, and a decoder 11 such as an I / O address decoder.
4. Scope connector 115 connected to the electronic endoscope 101 as various input / output ports, video signal output connector 116 connected to the monitor 103, keyboard connector 117 connected to the keyboard 104, connected to the recording device And a display controller 119 for drawing characters. Further, for example, an operation panel 120 as external input means is provided on a front panel or the like of the processor 102. Reference numeral 121 denotes a keyboard controller (K
BC), and reference numeral 122 denotes a parallel input / output circuit (PI
O).

FIG. 25 is a diagram showing an example of a screen displayed on the monitor screen. As shown in FIG. 25, a screen for pre-registering patient data in the electronic endoscope apparatus, that is, a so-called registration screen 123 is displayed on the screen of the monitor 103. FIG. 26 is a diagram showing another example of the screen displayed on the monitor screen. As shown in FIG.
On the screen 03, a so-called call screen 124 for calling the patient data and the like registered by the registration screen 123 is displayed.

These screens 123 and 124 are both displayed on the screen of the monitor 103 by performing a predetermined operation.

That is, the registration screen 123 is displayed on the screen of the monitor 103 by selecting a “registration key” (not shown) which is a predetermined function key provided on the keyboard 104. Note that the memory 11 of the processor 102 is
The number of persons that can be registered in the number 3 is predetermined, and it is not possible to register more patient data than the prescribed number.

When the "registration key" is pressed, if there is patient data already registered in the memory 113, the patient name is displayed as shown in FIG. 25 (the patient name is changed from 1 in FIG. 25). 3 is indicated by a symbol). If the number of patient data registered in the memory 113 is less than the maximum number of data that can be registered, the character "No Data" indicating that the data is unregistered is displayed on the screen. When "No Data" is selected on the registration screen 123, the pre-registration of the patient data can be performed according to the instruction.

On the other hand, the call screen 124 is displayed on the screen of the monitor 103 by selecting a "call key" (not shown) which is a predetermined function key provided on the keyboard 104. When the “call key” is pressed, a list of patient names registered in advance on the registration screen 123 is displayed. When an arbitrary patient name is selected from the list of patient names, the registered patient data, such as name, ID number, date of birth, etc., is displayed on the endoscope screen of the monitor 103. Displayed above (not shown).

Further, in the endoscope apparatus 100 of this embodiment, when the “switching key” which is a predetermined function key provided on the keyboard 104 is pressed while the registration screen 123 is being displayed, the call screen 124 is immediately displayed. It has been migrated. That is, if the user wants to call the patient data immediately after pre-inputting the data on the registration screen 123, the registration screen 123 is closed once and the “call key”
The screen shifts to the call screen 124 only by pressing the "switch key" without performing the complicated operation of pressing. Similarly, while the call screen 124 is being displayed, by pressing a “switch key” which is a predetermined function key provided on the keyboard 104, the screen immediately shifts to the registration screen 123.

As described above, by providing the "switching key", the keyboard operation can be simplified and the operability can be greatly improved.

In the above-described embodiment, the "switching key" is a function key provided on the keyboard. However, the "switching key" is not limited to the function key, and is not used for other operations. , For example, a “cursor” key or a “Tab” key, or a combination of a plurality of keys, for example, a “Ctrl” key + “F1” key.

When the "switch key" is depressed, the screens that can be shifted include the registration screen 123 and the call screen 124.
However, the present invention is not limited to this, and may be configured to switch to another screen such as a system setting screen (not shown).

FIG. 27 is a diagram for explaining another configuration of the electronic endoscope apparatus. As shown in FIG. 27, when the recording device 105 connected to the processor 102 for recording the endoscope image data is, for example, a printer 106, when the printer 106 prints out, as an arbitrary caption on photographic paper, A function is provided for the user to arbitrarily input a hospital name, a comment, etc., and to print a designated character. The caption can be input by remote control from the processor 102 in addition to the caption input by the printer 106 itself. Other configurations are the same as those of the other embodiments described above, and the same members are denoted by the same reference numerals and description thereof will be omitted.

Here, the caption input by the remote control from the processor 102 will be described. FIG. 28 is a diagram for describing an example of a screen displayed on the monitor screen.

For example, when the surgeon wants to input a caption while observing the endoscope image displayed on the screen of the monitor 103, the surgeon can use the keyboard 1
The user presses a “caption key” which is a predetermined function key provided on the device 04. Then, as shown in FIG. 28, a caption input window 126 which is a window dedicated to caption input is displayed on the endoscope image 125 displayed on the screen of the monitor 103,
It enters the caption input standby state.

Here, the operator inputs an arbitrary caption via the keyboard 104. As a result, when the printing paper is output from the printer 106, the caption input to the caption input window 126 is printed at a predetermined position together with the endoscope image.

As described above, the caption window 12
When inputting a caption by using the
Since the caption can be input simply by operating the keyboard 104 connected to the keyboard 02, the operation is easier than when the caption is input from the printer main body.

However, the “caption key” is not limited to a function key provided on the keyboard 104, but may be any key not used for other operations.
For example, a “cursor” key or a “Tab” key may be used, and a combination of a plurality of keys as described above,
For example, a “Ctrl” key + “F2” key may be used.

In the electronic endoscope device 100,
When inputting patient data and the like or inputting a caption using the keyboard 104, input can be performed in different input modes, such as alphanumeric input by ASCII input, katakana input by Roman alphabet input, and katakana input by kana input. I have.

These input modes can be switched by using a predetermined function key “input mode switching key” provided on the keyboard 104.

More specifically, the input mode of the keyboard 104 when the power is turned on is the ASCII input mode.
When the "input mode switching key" is pressed in this state, the input mode is switched to the Roman character input mode. next,
When the "input mode switching key" is pressed in this state, the input mode is switched to the kana input mode. Further, in this state, when the "input mode switching key" is pressed, the input mode is switched again to the ASCII input mode. That is, every time the "input mode switching key" is pressed, the input mode is toggled from ASCII → Roman → Kana → ASCII →.
It switches in the order of. Thus, the user can easily perform the input mode switching operation.

In this embodiment, the cursor is set for each input mode so that the user can clearly recognize whether the current input mode is the ASCII input mode, the Roman character input mode, or the kana input mode. Are displayed in different colors.

That is, for example, in the ASCII input mode, the cursor is displayed in white, in the Roman alphabet input mode, the cursor is displayed in green, and in the kana input mode, the cursor is displayed in blue. Thus, when the user performs the input mode switching operation,
The input mode can be identified instantly by looking at the color of the cursor displayed on the screen.

The "switching key" for switching the input mode is not limited to the function key provided on the keyboard 104, but may be any key not used for other operations, for example, a "cursor" key or a "Tab" key.
It may be a key or a combination of a plurality of keys, for example, a “Ctrl” key + “F3” key. Also,
The color of the cursor to be assigned for each input mode is not limited to the above-described color, and a desired color may be assigned to each mode.

By the way, one of various signal processes performed by the video signal processing section 111 on the video signal obtained from the electronic endoscope 101 is photometry. This photometry is performed by the video signal processing unit 111 detecting the brightness of the video signal for each pixel of the CCD, discriminating between a bright portion and a dark portion in the total pixel area of the CCD, and based on the result. When a large part of the total pixel area is displayed on the screen of the monitor 103 as an endoscope image, photometry may be performed on the total pixel area of the CCD. In the case where only the monitor 103 is displayed on the monitor 103, the monitor 10
If the photometry including the photometry result around the central portion of the CCD that is not displayed in 3 is performed, appropriate dimming cannot be performed.

FIG. 29 shows a case where most of the total pixel area is displayed on the screen of the monitor 103 as an endoscope image so that the processor 102 can select the photometric area A according to the situation. As shown, photometry is performed by photometry over the entire surface. FIG. 29 is a diagram for explaining the entire surface photometry.
In FIG. 29, a hatched portion, that is, an area A of the entire screen is a photometric area. When only the center portion of the total pixel area is displayed on the screen of the monitor 103 as an endoscope image, as shown in FIG. 30, photometry is performed by center-weighted photometry. FIG. 30 is a diagram for explaining center-weighted photometry. In FIG. 30, a rectangular area A at the center of the screen is a photometric area. The switching of the photometric method is performed on the system setup screen 127 shown in FIG.
FIG. 31 is a diagram showing an example of a screen for switching between these photometric methods.

The system setup screen 127 includes:
This is displayed by pressing a “system setup key” which is a predetermined function key (not shown) provided on the keyboard 104. The system setup screen 127 includes “Full” 128 and “Center” 1
There are two photometric modes, 29 and 29, "Full" 128
Is selected, the entire photometry state shown in FIG. 29 is set, and "C
When “enter” 129 is selected, the center-weighted metering state shown in FIG. 30 is set.

Therefore, by displaying the system setup screen 127, the user can easily select a photometry method and always perform observation in the best dimming state.

The present invention is not limited to the above-described embodiment, but can be variously modified without departing from the gist of the invention.

Note that the configuration described above has the following additional features from the configuration described above.

[Additional remarks] (1) An endoscope apparatus comprising: a lamp for emitting illumination light for illuminating a subject; and power supply means for supplying power for lighting the lamp. An endoscope comprising: a condition detecting means disposed in the vicinity and detecting a predetermined condition relating to a lamp; and a notifying means for notifying a state of the lamp based on a detection result of the condition detecting means. apparatus.

(2) The endoscope according to claim 1, wherein the condition detecting means is a temperature detecting means for detecting whether or not the temperature of the lamp or the vicinity of the lamp is equal to or higher than a predetermined temperature. apparatus.

(3) The condition detecting means is a power detecting means for detecting whether the current or voltage supplied from the power supply means to the lamp is equal to or less than a predetermined current value or a predetermined voltage value. The endoscope apparatus according to claim 1, characterized in that:

(4) Further, selecting means for selecting a lamp from a plurality of lamps of the endoscope apparatus, and judging whether or not the lamp selected by the selecting means is at an appropriate position. And a notifying unit that, when the judging unit determines that the lamp selected by the selecting unit is not at the proper position, notifies the lamp that the lamp is not at the proper position. 2. The endoscope apparatus according to claim 1, wherein

(5) The apparatus further comprises a lamp holder for holding the plurality of lamps, wherein the selecting means arranges the selected lamps in the illumination light path and places other unselected lamps on standby outside the illumination path. A moving member that moves the lamp holder so as to be arranged at a position, and the determining unit is a position detecting unit that detects whether at least one of the plurality of lamps is arranged at a predetermined position. 5. The endoscope apparatus according to claim 4, wherein:

(6) The notification means controls display of the display means so that predetermined visual information corresponding to predetermined conditions relating to the lamp detected by the detection means is displayed on the predetermined display means. The endoscope apparatus according to claim 1, wherein the endoscope apparatus is a display control unit.

(7) The endoscope according to claim 1, wherein the notifying means is sounding control means for generating a predetermined sound corresponding to a predetermined condition relating to the lamp detected by the detecting means. Mirror device.

(8) When the temperature detecting means detects that the temperature has exceeded a predetermined temperature, the notifying means transmits predetermined visual information indicating that the lamp is at or above a predetermined temperature. 3. The endoscope apparatus according to claim 2, wherein the display control means is a display control means for controlling display of the display means so as to display the information on the display means.

(9) When the temperature detecting means detects that the temperature has exceeded a predetermined temperature, the notifying means generates a predetermined sound indicating that the lamp is at or above a predetermined temperature. 3. The endoscope apparatus according to claim 2, wherein the endoscope apparatus is a means.

(10) In the notification means, the power detection means detects that the current supplied to the lamp is equal to or less than a predetermined current value or the voltage supplied to the lamp is equal to or less than a predetermined voltage value. At this time, the display control of the display means is performed such that predetermined visual information indicating that the current or voltage supplied to the lamp is equal to or less than a predetermined current value or equal to or less than a predetermined voltage value is displayed on the predetermined display means. 4. The endoscope apparatus according to claim 3, wherein the endoscope apparatus is a display control unit that performs the operation.

(11) In the notification means, the power detection means detects that the current supplied to the lamp is equal to or less than a predetermined current value or the voltage supplied to the lamp is equal to or less than a predetermined voltage value. And a generation control means for generating a predetermined sound indicating that a current or a voltage supplied to the lamp is equal to or less than a predetermined current value or a predetermined voltage value. Endoscope device.

[0185]

As described above, according to the present invention,
It is possible to realize an endoscope apparatus that can notify a user of the cause of turning off the lamp or reducing the amount of light to the user, and can promptly perform a process of turning on the lamp normally.

[Brief description of the drawings]

FIG. 1 is a configuration diagram for explaining a configuration of an electronic endoscope apparatus.

FIG. 2 is a diagram illustrating a configuration of an electronic endoscope.

FIG. 3 is a block diagram for explaining a configuration inside an endoscope apparatus main body according to the first embodiment.

FIG. 4 is a diagram for explaining a positional relationship between a cooling passage and a lamp provided in the main body of the endoscope for cooling the vicinity of the lamp.

FIG. 5 is a diagram for explaining an operation of a changeover switch of a temperature detection operation unit.

FIG. 6 is a diagram showing an example of an endoscope observation image.

FIG. 7 is a diagram illustrating an example of an endoscope observation image in a notification state.

FIG. 8 is a block diagram showing a configuration of the entire endoscope system.

FIG. 9 is a diagram illustrating a specific configuration of a light source unit in FIG. 8;

FIG. 10 is a flowchart illustrating a process performed by a CPU when a lamp temperature abnormality occurs.

FIG. 11 is a block diagram illustrating a configuration of an endoscope apparatus main body according to a second embodiment of the present invention.

FIG. 12 is a diagram for explaining a state in which tungsten of a lamp is melted.

FIG. 13 is a view for explaining a state in which a welded portion is formed on tungsten of a lamp.

FIG. 14 is a diagram showing a specific configuration of a light source unit of the endoscope system according to the second embodiment.

FIG. 15 is a flowchart of a process performed by a CPU when a lamp current / voltage abnormality occurs.

FIG. 16 is a block diagram illustrating a configuration of an endoscope apparatus main body according to a third embodiment of the present invention.

FIG. 17 is a diagram illustrating a state in which the first lamp is used as an illumination lamp.

FIG. 18 is a diagram illustrating a state in which the second lamp is used as a lighting lamp.

FIG. 19 is a diagram illustrating a specific configuration of a light source unit of the endoscope system according to the third embodiment.

FIG. 20 is a diagram for describing a case where a B lamp is located on an optical path.

FIG. 21 is a diagram for describing a case where an A lamp is located on an optical path.

FIG. 22 is a flowchart of a process performed by a CPU when a lamp position abnormality occurs.

FIG. 23 is a block diagram illustrating a schematic configuration of an electronic endoscope apparatus.

FIG. 24 is a diagram illustrating a configuration of an electronic endoscope device.

FIG. 25 is a diagram showing an example of a screen displayed on the monitor screen.

FIG. 26 is a diagram showing another example of the screen displayed on the monitor screen.

FIG. 27 is a diagram for explaining another configuration of the electronic endoscope device.

FIG. 28 is a diagram illustrating an example of a screen displayed on the monitor screen.

FIG. 29 is a diagram for explaining full-surface photometry.

FIG. 30 is a diagram for explaining center-weighted photometry.

FIG. 31 is a diagram illustrating an example of a screen for switching between these photometric methods.

[Description of Signs] 1, 201 ... Endoscope 2, 2A ... Endoscope device main body 2a ... Device connector 2b ... Illumination light connector 2c ... Electric signal connector 3 ...・ Keyboard 11 ・ ・ ・ Insertion part 12 ・ ・ ・ Operation part 13 ・ ・ ・ Universal cord 14 ・ ・ ・ Tip constituent part 15 ・ ・ ・ Bending part 16 ・ ・ ・ Flexible tube part 17 ・ ・ ・ Bending operation knob 18 ・..Endoscope connector 18a ... Illumination connector 18b ... Signal connector 19 ... CCD 20 ... Signal cable 21 ... Light guide 22, 61a, 61b ... Lamp 23, 23a, 23b ..Light source unit 26 ... Cooling fan 28 ... Cooling channel 28a ... Suction port 28b ... Exhaust port 27 ... Temperature detection operation unit 30 ... Processor unit 31 ... CPU 32 ... Signal processing 33 ... alarm notifying unit 62 ... lamp holder 63 ... lever 224 ... lamp temperature detector 231 ... scope connector

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) H04N 5/225 H04N 5/225 C // A61B 1/00 300 A61B 1/00 300D (72) Inventor Iwasaki Tomoki 2-43-2 Hatagaya, Shibuya-ku, Tokyo F-term in Olympus Optical Industry Co., Ltd. WW18 YY04 YY12 YY18 5C022 AA08 AB15 AB40 AC18

Claims (3)

[Claims] 1. An endoscope apparatus comprising: a lamp that emits illumination light for illuminating a subject; and a power supply unit that supplies power for lighting the lamp. An endoscope apparatus comprising: condition detecting means for detecting a predetermined condition relating to a lamp; and notifying means for notifying a state of the lamp based on a detection result of the condition detecting means. 2. An endoscope apparatus according to claim 1, wherein said condition detecting means is a temperature detecting means for detecting whether the temperature of the lamp or the vicinity of the lamp is equal to or higher than a predetermined temperature. . 3. The condition detecting means is a power detecting means for detecting whether a current or a voltage supplied to the lamp from the power supply means is equal to or less than a predetermined current value or a predetermined voltage value. The endoscope apparatus according to claim 1, wherein: