Endoscope device cooling device and endoscope treatment device

Abstract

The cooling device for an endoscope of the present application has: a case having a first communication portion and a second communication portion which communicate with the outside at mutually different positions; a first fan; an air duct which covers a heat generating body provided in the case and which is connected to the first fan, and which generates a first air current by driving of the first fan; and a second fan which is provided in an opening formed by the second communication portion, the air duct having: a first opening portion which forms an opening through which the first air current generated by the first fan passes; a second opening portion which forms an opening at a position downstream of the heat generating body from the first air current; a third opening portion which forms an opening on a surface opposite to a part of an inner wall of the case, which makes the outside and the inside of the air duct communicate in a direction different from the first air current; and a wall portion which is provided in the vicinity of the third opening portion of the air duct, and which extends from the surface of the third opening portion toward the outside of the air duct.

Description

Technical Field

[0001] This invention relates to a cooling device for endoscopes and an endoscope processing device. Background Technology

[0002] In the past, endoscopic systems have been used in the medical field to observe the interior of a subject. An endoscope is typically inserted into a patient or other subject by a flexible, elongated insertion port, and illumination of the interior is achieved by light emanating from the tip of this insertion port (see, for example, Patent Document 1). Furthermore, the endoscope may have a built-in light source connected to a processing device that controls the endoscope. This processing device includes an intake port for drawing air in from the outside and an exhaust port for expelling air from the outside. A fan circulates the air within the housing (box) of the processing device, thus ventilating the interior.

[0003] Existing technical documents

[0004] Patent documents

[0005] Patent Document 1: Japanese Patent No. 6246451 Summary of the Invention

[0006] The problem that the invention aims to solve

[0007] However, if the fan drive stops when the processing unit is in use, the airflow speed inside the housing may slow down, reducing the efficiency of ventilation.

[0008] The present invention was made in view of the above circumstances, and its object is to provide an endoscope cooling device that can efficiently ventilate the housing even when the fan drive is stopped.

[0009] Methods for solving problems

[0010] To solve the aforementioned problems and achieve the objective, the endoscope cooling device of the present invention is characterized by comprising: a housing having a first communication portion and a second communication portion communicating with the outside at different locations; a first fan that generates airflow by driving; an air duct that covers a heating element disposed on the housing and is connected to the first fan, the air duct generating a first airflow by driving the first fan; and a second fan disposed at an opening formed by the second communication portion, the air duct having: a first opening portion that allows the outside of the air duct to communicate with the outside of the housing. The duct is internally connected and forms an opening through which the first airflow generated by the first fan passes; a second opening that connects the outside of the duct to the inside, and is formed downstream of the heating element in the first airflow; a third opening that forms on a surface opposite to a portion of the inner wall of the housing, allowing the outside and inside of the duct to connect in a direction different from the first airflow; and a wall portion disposed near the third opening of the duct, extending from the formation of the third opening toward the outside of the duct.

[0011] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, the third opening is located downstream of the first airflow from the first fan.

[0012] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, the heating element has a heating element and a heat sink in contact with the heating element, the first airflow passes through the heat sink, and when viewed from the through direction of the opening formed by the third opening, the third opening is provided at a position containing the heat sink.

[0013] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, the air duct also has a fourth opening, which is located upstream of the first airflow than the first fan.

[0014] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, the endoscope cooling device further includes a control unit, which determines whether the first fan has stopped when driving the first fan and the second fan, and increases the output of the second fan when it is determined that the first fan has stopped.

[0015] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, when the control unit performs drive control on the first fan and the second fan, it determines whether the second fan has stopped, and if it determines that the second fan has stopped, it increases the output of the first fan.

[0016] Furthermore, the endoscope cooling device of the present invention is characterized in that, in the above invention, the second fan is disposed at a position downstream of the first airflow from the second opening.

[0017] Furthermore, the endoscope cooling device of the present invention is characterized by comprising: a housing having a first connecting portion and a second connecting portion communicating with the outside at different locations; a first fan that generates airflow by driving; an air duct that covers a heating element disposed on the housing and is connected to the first fan, the air duct generating a first airflow by driving the first fan; a component having a plane opposite a predetermined surface of the air duct; and a second fan disposed at an opening formed by the second connecting portion, the air duct having: a first opening portion, the first opening portion allowing the... The duct is connected to the outside and the inside, forming an opening through which the first airflow generated by the first fan passes; a second opening, which connects the outside and the inside of the duct, is formed at a position downstream of the heating element in the first airflow; a third opening, which forms an opening on a surface opposite to the plane of the component, allowing the outside and the inside of the duct to connect in a direction different from the first airflow; and a wall portion, which is disposed near the third opening of the duct and extends from the formation of the third opening toward the outside of the duct.

[0018] Invention Effects

[0019] According to the present invention, the following effect is achieved: even when the fan drive stops, the air inside the housing can be exchanged efficiently. Attached Figure Description

[0020] Figure 1 This is a diagram showing a schematic structure of the endoscope system according to Embodiment 1 of the present invention.

[0021] Figure 2 This is a block diagram illustrating the schematic structure of an endoscope system according to Embodiment 1 of the present invention.

[0022] Figure 3 This is a diagram illustrating the structure of the processing device included in the endoscope system according to Embodiment 1 of the present invention.

[0023] Figure 4 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 1 of the present invention.

[0024] Figure 5 Is with Figure 4 A partial sectional view of the cooling section corresponding to the AA-line section shown.

[0025] Figure 6This is a perspective view showing the structure of the air duct provided in the processing device of the endoscope system according to Embodiment 1 of the present invention.

[0026] Figure 7 This is a top view showing the structure of the air duct provided in the processing device of the endoscope system according to Embodiment 1 of the present invention.

[0027] Figure 8 yes Figure 7 The BB line section view shown.

[0028] Figure 9 This diagram illustrates the airflow in the cooling device.

[0029] Figure 10 This is a perspective view showing the structure of the air duct provided in the processing device of the endoscope system in a modified example 1 of embodiment 1 of the present invention.

[0030] Figure 11 This is a top view showing the structure of the air duct provided in the processing device of the endoscope system in a modified example 1 of embodiment 1 of the present invention.

[0031] Figure 12 yes Figure 11 The CC-line sectional view shown.

[0032] Figure 13 This is a perspective view showing the structure of the air duct provided in the processing device of the endoscope system in a modified embodiment 2 of the present invention.

[0033] Figure 14 This is a top view showing the structure of the air duct provided in the processing device of the endoscope system in a modified embodiment 2 of the present invention.

[0034] Figure 15 yes Figure 14 The DD-line cross-sectional view shown.

[0035] Figure 16 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 3 of embodiment 1 of the present invention.

[0036] Figure 17 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified embodiment 3 of the present invention.

[0037] Figure 18 yes Figure 17 The EE line section view shown.

[0038] Figure 19This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 4 of embodiment 1 of the present invention.

[0039] Figure 20 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 4 of embodiment 1 of the present invention.

[0040] Figure 21 yes Figure 20 The FF line section view shown.

[0041] Figure 22 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 5 of embodiment 1 of the present invention.

[0042] Figure 23 This is a top view showing the structure of the air duct provided in the processing device of the endoscope system of Embodiment 1, Modified Example 5 of the present invention.

[0043] Figure 24 yes Figure 23 The cross-sectional view shown is a GG line view.

[0044] Figure 25 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 2 of the present invention.

[0045] Figure 26 This is a perspective view showing the structure of the air duct provided in the processing device of the endoscope system according to Embodiment 2 of the present invention.

[0046] Figure 27 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in a modified embodiment of the present invention, 2.

[0047] Figure 28 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in a modified embodiment of the present invention, 2.

[0048] Figure 29 Is with Figure 28 The HH line section shown is a partial cross-sectional view of the air duct.

[0049] Figure 30 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 3 of the present invention.

[0050] Figure 31 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 4 of the present invention.

[0051] Figure 32 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 5 of the present invention. Detailed Implementation

[0052] Hereinafter, embodiments (hereinafter referred to as "implementations") for carrying out the present invention will be described. In these embodiments, a medical endoscope system that captures and displays images within a patient or other subject body will be described as an example of a system incorporating the cooling device for an endoscope according to the present invention. However, the present invention is not limited to these embodiments. Furthermore, in the accompanying drawings, the same reference numerals are used to denote the same parts.

[0053] (Implementation Method 1)

[0054] Figure 1 This is a diagram showing a schematic structure of the endoscope system according to Embodiment 1 of the present invention. Figure 2 This is a block diagram showing the general structure of the endoscope system of Embodiment 1.

[0055] Figure 1 and Figure 2 The endoscope system 1 shown includes: an endoscope 2, which takes images of the body by inserting its tip into the body of the patient; a processing unit 3, which has an illumination section 3a that generates illumination light emitted from the tip of the endoscope 2, performs prescribed signal processing on the image signals taken by the endoscope 2, and uniformly controls the operation of the endoscope system 1 as a whole; and a display device 4, which displays the in vivo images generated by the signal processing of the processing unit 3.

[0056] The endoscope 2 has: an insertion part 21, which is in a flexible, elongated shape; an operation part 22, which is connected to the base end of the insertion part 21 and receives input of various operation signals; and a universal cable 23, which extends from the operation part 22 in a direction different from the direction of extension of the insertion part 21, and has built-in various cables for connection to the processing device 3 (including the illumination part 3a).

[0057] The insertion part 21 has: a front end 24, which houses an imaging element 244, the imaging element 244 being composed of pixels arranged in a two-dimensional manner that generate signals by receiving light and performing photoelectric conversion; a flexible bending part 25, which is composed of multiple bending blocks; and a long, flexible tube part 26, which is connected to the base end of the bending part 25 and is flexible. The insertion part 21 is inserted into the body cavity of the subject, and the imaging element 244 captures images of the subject, such as biological tissues, located in areas not reached by external light.

[0058] The front end portion 24 includes: a light guide 241, which is made of glass fiber or the like, and forms a light guide path for the light emitted by the illumination unit 3a; an illumination lens 242, which is disposed at the front end of the light guide 241; an optical system 243 for focusing light; and an imaging element 244 (imaging unit), which is disposed at the imaging position of the optical system 243, receives the light focused by the optical system 243, converts it into an electrical signal, and performs prescribed signal processing.

[0059] The optical system 243 is constructed using one or more lenses and has an optical zoom function that changes the field of view and a focusing function that changes the focal point.

[0060] The imaging element 244 performs photoelectric conversion on light from the optical system 243 to generate an electrical signal (image signal). Specifically, the imaging element 244 includes: a light-receiving section 244a, which is composed of a matrix of multiple pixels, each of which has a photodiode that stores a charge corresponding to the amount of light, a capacitor that converts the charge transferred from the photodiode into a voltage level, etc., and each pixel performs photoelectric conversion on light from the optical system 243 to generate an electrical signal; and a readout section 244b, which sequentially reads out the electrical signal generated by the pixel arbitrarily selected as the readout target from the multiple pixels of the light-receiving section 244a, and outputs it as an image signal. The imaging element 244 is implemented, for example, using a CCD (Charge Coupled Device) image sensor or a CMOS (Complementary Metal Oxide Semiconductor) image sensor.

[0061] Additionally, the endoscope 2 may also have a memory (not shown) that stores execution and control programs for causing the imaging element 244 to perform various actions, as well as data containing identification information of the endoscope 2. The identification information includes the endoscope 2's inherent information (ID), model year, specifications, and transmission method, etc.

[0062] The operating unit 22 includes: a bending knob 221 that bends the bending portion 25 in the up-down and left-right directions; a treatment instrument insertion portion 222 that inserts treatment instruments such as biopsy forceps, electrosurgical scalpels, and examination probes into the body cavity of the subject; and multiple switches 223 serving as operation inputs that input operation indication signals for peripheral devices such as the air supply unit, water supply unit, and screen display control, in addition to the treatment device 3. Treatment instruments inserted through the treatment instrument insertion portion 222 protrude from the opening (not shown) through the treatment instrument channel (not shown) at the front end 24.

[0063] The general-purpose cable 23 has at least a built-in light guide 241 and a bundled cable 245 consisting of multiple signal lines. The bundled cable 245 includes signal lines for transmitting camera signals, signal lines for transmitting drive signals for driving the camera element 244, and signal lines for transmitting and receiving information including inherent information related to the endoscope 2 (camera element 244). Furthermore, while this embodiment describes the use of signal lines to transmit electrical signals, optical signals can also be transmitted, and signals can also be transmitted between the endoscope 2 and the processing device 3 via wireless communication.

[0064] Next, the structure of the processing device 3 will be described. The processing device 3 includes an illumination unit 3a, a processor unit 3b, and a cooling unit 3c. The cooling unit 3c is equivalent to a cooling device.

[0065] First, the structure of the lighting unit 3a will be described. The lighting unit 3a includes a light source unit 300, a light source driver 310, and a lighting control unit 320.

[0066] The light source unit 300 includes one or more light sources that emit light of a preset wavelength band, and an optical system that guides the light emitted by the light source to the light guide 241.

[0067] Under the control of the lighting control unit 320, the light source driver 310 supplies current to each light source, causing the light source to emit light.

[0068] The lighting control unit 320 controls the amount of power supplied to the light source and controls the driving timing of the light source based on the control signal (dimming signal) from the control unit 33.

[0069] Next, the structure of the processor unit 3b will be described. The processor unit 3b includes an image processing unit 31, an input unit 32, a control unit 33, and a storage unit 34.

[0070] The image processing unit 31 receives image data of various colors of illumination light captured by the imaging element 244 from the endoscope 2. Upon receiving analog image data from the endoscope 2, the image processing unit 31 performs A / D conversion to generate a digital imaging signal. Furthermore, upon receiving image data as light signals from the endoscope 2, the image processing unit 31 performs photoelectric conversion to generate digital image data.

[0071] The image processing unit 31 performs prescribed image processing on the image data received from the endoscope 2 to generate an image and outputs it to the display device 4. Here, the prescribed image processing includes simultaneous processing, grayscale correction processing, and color correction processing. The image processing unit 31 generates an image signal containing the internal image generated through the above image processing. Furthermore, the image processing unit 31 can also adjust the gain according to the brightness of the image. The image processing unit 31 is configured using a general-purpose processor such as a CPU (Central Processing Unit) or a dedicated processor such as an ASIC (Application Specific Integrated Circuit) that performs specific functions.

[0072] The input unit 32 is implemented using a keyboard, mouse, switch, or touch panel, and accepts various signals such as action indication signals that instruct the endoscope system 1 to move. Alternatively, the input unit 32 may include a switch installed on the operation unit 22, or a portable terminal such as an external tablet computer.

[0073] The control unit 33 performs drive control of each component, including the imaging element 244 and the illumination unit 3a, as well as input / output control of information for each component. The control unit 33 refers to control information data (e.g., readout timing) stored in the storage unit 34 for camera control and sends it as a drive signal to the imaging element 244 via a predetermined signal line included in the cable 245. The control unit 33 is configured using a dedicated processor, such as a general-purpose processor like a CPU or an ASIC that performs specific functions.

[0074] The storage unit 34 stores various programs used to operate the endoscope system 1, as well as data including various parameters required for the operation of the endoscope system 1. Additionally, the storage unit 34 stores identification information for the processing device 3. This identification information includes the processing device 3's unique ID, model year, and specifications.

[0075] In addition, the storage unit 34 stores various programs, including image acquisition processing programs for executing the image acquisition processing method of the processing device 3. These programs can also be widely distributed by recording on computer-readable recording media such as hard disks, flash memory, CD-ROMs, DVD-ROMs, and floppy disks. Furthermore, these programs can also be obtained by downloading them via a communication network. The communication network mentioned here can be implemented through existing public landline networks, LANs (Local Area Networks), WANs (Wide Area Networks), etc., and can be either wired or wireless.

[0076] The storage unit 34 with the above structure is implemented using ROM (Read Only Memory) pre-installed with various programs, RAM, hard disk, etc., which store the operation parameters and data of each process.

[0077] Display device 4 displays a display image corresponding to the image signal received from processing device 3 (image processing unit 31) via image cable. Display device 4 is configured using a monitor such as liquid crystal or organic EL (electroluminescence).

[0078] Here, refer to Figure 3 The housing of the processing device 3 will be described. Figure 3 This diagram illustrates the structure of the processing device included in the endoscope system according to Embodiment 1 of the present invention. The processing device 3 is configured to house components within a housing 30, which serves as a case. A first connecting portion 30a and a second connecting portion 30b are formed on the housing 30, communicating between the outside and the inside of the housing 30. The first connecting portion 30a and the second connecting portion 30b are formed on different surfaces of the housing 30, and on surfaces different from the surface to which the endoscope 2 is attached. A second fan 340, described later, is provided in an opening formed on the inside side of the housing 30 within the opening of the second connecting portion 30b. Driven by the second fan 340, air is drawn in from the first connecting portion 30a and exhausted from the second connecting portion 30b.

[0079] Next, the structure of the cooling unit 3c will be explained. Figure 4 This is a diagram illustrating the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 1 of the present invention. Figure 5 Is with Figure 4 The cooling section 3c is a partial cross-sectional view of the section corresponding to line AA shown. The cooling section 3c includes a first fan 330, a first detection unit 331, a second fan 340, a second detection unit 341, a control unit 350, a heat sink 360, and an air duct 370.

[0080] The first fan 330 and the second fan 340 generate airflow by being driven. The first fan 330 and the second fan 340 are configured such that their airflow directions (blade orientation) are perpendicular to each other.

[0081] The first detection unit 331 detects the driving status of the first fan 330 and outputs it to the control unit 350.

[0082] The second detection unit 341 detects the driving status of the second fan 340 and outputs it to the control unit 350.

[0083] The first detection unit 331 and the second detection unit 341 acquire the current value as the driving state and output it as the detection value to the control unit 350.

[0084] The control unit 350 performs drive control of the first fan 330 and the second fan 340, etc. The control unit 350 outputs the detection results obtained from the first detection unit 331 and the second detection unit 341 to the control unit 33, and performs drive control of the first fan 330 and the second fan 340 according to the control signal from the control unit 33.

[0085] When the control unit 350 determines that the first fan 330 has stopped based on the detection value of the first detection unit 331, it increases the output (speed) of the second fan 340, thereby increasing the airflow caused by the drive of the second fan 340. Conversely, when the control unit 350 determines that the second fan 340 has stopped based on the detection value of the second detection unit 341, it increases the output (speed) of the first fan 330, thereby increasing the airflow caused by the drive of the first fan 330. A threshold for determining whether the drive has stopped is preset, and the control unit 350 compares this threshold with the detection value to determine whether the fan has stopped. Furthermore, if the control unit 350 cannot read the speed of a fan, it increases the speed of the fan other than the one whose speed cannot be read.

[0086] The control unit 350 is composed of a dedicated processor, such as a general-purpose processor like a CPU or an ASIC, which performs specific functions using various arithmetic circuits.

[0087] The heat sink 360 is disposed on any of the substrates 321 to 323 on which circuits constituting the control unit 33, the lighting control unit 320, the control unit 350, etc., are mounted. Figure 4 , 5 The diagram shows an example of a circuit mounted on a substrate 321. A heat sink 360 absorbs heat generated in the substrate 321 and dissipates it to the outside. Furthermore, a heat-generating element (e.g., a circuit) in the substrate and the heat sink 360 in contact with that heat-generating element constitute a heat-generating body.

[0088] Figure 6 This is a perspective view showing the structure of the air duct in the processing device provided in the endoscope system of Embodiment 1 of the present invention. Figure 7 This is a top view showing the structure of the air duct in the processing device provided in the endoscope system of Embodiment 1 of the present invention. Figure 8 yes Figure 7 The BB line section view shown.

[0089] An air duct 370 is disposed on the substrate 321 and covers the heat sink 360. The air duct 370 is box-shaped with steps. A first opening 371, a second opening 372, and a third opening 373 are formed in the air duct 370. The first opening 371, the second opening 372, and the third opening 373 are each formed with a rectangular outer edge.

[0090] The first opening 371 is formed at a position that becomes the first connecting portion 30a when the air duct 370 is disposed on the substrate 321. The second opening 372 is formed at a position that becomes the second connecting portion 30b relative to the first opening 371 when the air duct 370 is disposed on the substrate 321. Specifically, the second opening 372 is formed at a position downstream of the heat source in the airflow (airflow F1 described later) flowing from the first opening 371 toward the second opening 372. In addition, the second fan 340 is disposed at a position downstream of the second opening 372 in the airflow flowing from the first opening 371 toward the second opening 372.

[0091] A first fan 330 is provided at the first opening 371. Driven by the first fan 330, the formation of the gas flow (airflow) that draws air into the air duct 370 through the first opening 371 and discharges it to the outside of the air duct 370 through the second opening 372 can be made more stable.

[0092] Here, the air duct 370 is connected to the first fan 330. Figure 5 The image shows an example of physical contact between the air duct 370 and the first fan 330. However, as long as air can be drawn into the air duct 370 by the drive of the first fan 330 to generate airflow, the structure can also be one in which the first fan 330 and the air duct 370 do not physically contact each other.

[0093] The third opening 373 is located downstream of the first opening 371 in the airflow flowing from the first opening 371 toward the second opening 372. The third opening 373 is formed between the first opening 371 and the second opening 372. The third opening 373 is formed on a wall surface that does not intersect the flow path of the air entering from the first opening 371 and exiting from the second opening 372, and is here formed on the wall surface opposite to the substrate 321.

[0094] A wall portion 374 is erected on the outer edge of the third opening 373 of the air duct 370. The wall portion 374 extends toward the outside of the air duct 370. Specifically, the wall portion 374 extends perpendicularly to the forming surface of the third opening 373. The forming surface of the opening, as referred to here, is the surface of the air duct having the outer edge forming the opening.

[0095] In a top view viewed from a direction perpendicular to the forming surface of the third opening 373, the wall portion 374 is U-shaped with its base at the outer edge of the second opening 372 side of the third opening 373. Specifically, the wall portion 374 has: a first wall portion 374a disposed on the second opening 372 side; a second wall portion 374b extending from one end of the first wall portion 374a toward the first opening 371 side; and a third wall portion 374c extending from the other end of the first wall portion 374a toward the first opening 371 side. In the wall portion 374, the second wall portion 374b and the third wall portion 374c are parallel to each other. In addition, an example in which the wall portion 374 is provided at the outer edge of the third opening portion 373 will be described. However, it is acceptable as long as it is near the outer edge of the opening of the third opening portion 373 and at a distance sufficient to draw in air that collides with the wall portion 374 into the third opening portion 373. Alternatively, the wall portion 374 may be provided at a position away from the outer edge of the opening of the third opening portion 373.

[0096] Figure 9 This diagram illustrates the airflow in the cooling device. When the first fan 330 and the second fan 340 are driven, an airflow F1 is generated in the housing 30. This airflow F1 enters the air duct 370 from the first connecting portion 30a, exits through the radiator 360 from the second opening 372 to the outside of the air duct 370, and exits to the outside of the housing 30 via the second connecting portion 30b. This airflow F1 is generated by driving the first fan 330, forming a flow path of air through the first opening 371 and the second opening 372. Airflow F1 corresponds to the first airflow.

[0097] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370 from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370, where air enters from the third opening 373 and exits from the second opening 372. After entering the housing 30, the air in the airflow F2 collides with the wall 374 and flows towards the third opening 373, entering the air duct 370. By generating the airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 stops.

[0098] To maintain airflow, the third opening 373 is preferably formed upstream of the radiator 360 (heat-generating element). For example, viewed from the through direction of the opening (hole) formed by the third opening 373, the third opening 373 is located where the opening includes at least a portion of the radiator 360 (see reference). Figure 4 ).

[0099] In Embodiment 1 described above, as a structure for releasing heat drawn into the radiator 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370 that supplies air to the radiator 360. A wall portion 374, erected from the third opening 373 and used to supply air into the air duct 370, is also formed. According to Embodiment 1, even when the fan is stopped, air colliding with the wall portion 374 is drawn into the air duct 370 via the third opening 373, maintaining airflow to the radiator 360 and thus enabling efficient ventilation inside the housing.

[0100] (Modification 1 of Implementation Method 1)

[0101] Next, refer to Figures 10-12 A variation of Embodiment 1 of the present invention will be described. Figure 10 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in a modified example 1 of embodiment 1 of the present invention. Figure 11 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in a modified example 1 of embodiment 1 of the present invention. Figure 12 yes Figure 11 The CC-line cross-sectional view is shown. The endoscope system of this modified example 1 is identical in structure except that the air duct 370 of the endoscope system 1 described above is replaced with air duct 370A. Hereinafter, the air duct 370A, whose structure differs from that of embodiment 1, will be described.

[0102] Air duct 370A is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370A is box-shaped with steps. A first opening 371, a second opening 372 and a third opening 373 are formed in air duct 370A.

[0103] A wall portion 374A is erected on the outer edge of the third opening 373 of the air duct 370A. The wall portion 374A extends perpendicularly to the forming surface of the third opening 373. The wall portion 374A extends in a plate-like shape from the outer edge of the second opening 372 side of the third opening 373. Specifically, the wall portion 374A is composed only of a first wall portion 374a.

[0104] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0105] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370A from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370A, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9 After entering the housing 30, the air in airflow F2 collides with the wall portion 374A and flows towards the third opening 373, entering the air duct 370A. Even though the wall portion 374A is only erected on the side of the second opening 372, it can still supply air into the air duct 370A by being formed at the position where it collides with the air. Thanks to the generation of airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 is stopped.

[0106] In Modification 1 described above, as a structure for releasing heat drawn into the radiator 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370A that supplies air to the radiator 360. A wall portion 374A is also formed, vertically extending outward from the third opening 373, for supplying air into the air duct 370A. According to Modification 1, even when the fan is stopped, air colliding with the wall portion 374A is drawn into the air duct 370A via the third opening 373, maintaining airflow to the radiator 360 and thus enabling efficient ventilation within the housing.

[0107] (Modification 2 of Implementation Method 1)

[0108] Next, refer to Figures 13-15 A variation of Embodiment 1 of the present invention, Example 2, will be described. Figure 13 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified embodiment 2 of the present invention. Figure 14 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified embodiment 2 of the present invention. Figure 15 yes Figure 14 The DD-line cross-sectional view is shown. The endoscope system of this modified example 2 is identical in structure to the endoscope system 1 described above, except that the air duct 370 is replaced with air duct 370B. Hereinafter, the air duct 370B, which has a structure different from that of embodiment 1, will be described.

[0109] Air duct 370B is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370B is box-shaped with steps. A first opening 371, a second opening 372 and a third opening 373A are formed in air duct 370B.

[0110] The third opening 373A forms an opening with a trapezoidal outer edge. The upper base of the trapezoid of the third opening 373A is located on the side of the second opening 372.

[0111] A wall portion 374B is erected on the outer edge of the third opening 373A of the air duct 370B. The wall portion 374B extends perpendicularly to the forming surface of the third opening 373A. In a top view viewed from a direction perpendicular to the forming surface of the third opening 373A, the wall portion 374B has a U-shape with its base at the outer edge (corresponding to the upper bottom) of the second opening 372 side of the third opening 373A. Specifically, the wall portion 374B has: a first wall portion 374d, which is provided on the second opening 372 side; a second wall portion 374e, which extends from one end of the first wall portion 374d toward the first opening 371 side; and a third wall portion 374f, which extends from the other end of the first wall portion 374d toward the first opening 371 side.

[0112] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0113] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370B from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370B, where air enters from the third opening 373A and exits from the second opening 372 (see reference). Figure 9 After entering the housing 30, the air in airflow F2 collides with the wall portion 374B and flows towards the third opening 373A, entering the air duct 370B. By forming the wall portion 374B at the location where it collides with the air entering the housing 30, air can be supplied into the air duct 370B. Through the generation of airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 is stopped.

[0114] In Modification 2 described above, as a structure for releasing heat drawn into the radiator 360 to the outside of the housing, a third opening 373A, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370B that supplies air to the radiator 360. A wall portion 374B is also formed, vertically extending outward from the third opening 373A, for supplying air into the air duct 370B. According to Modification 2, even when the fan is stopped, air colliding with the wall portion 374B is drawn into the air duct 370B via the third opening 373A, maintaining airflow to the radiator 360 and thus enabling efficient ventilation within the housing.

[0115] (Modification 3 of Implementation Method 1)

[0116] Next, refer to Figures 16-18 A variation of Embodiment 1 of the present invention, Example 3, will be described. Figure 16 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 3 of embodiment 1 of the present invention. Figure 17 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified embodiment 3 of the present invention. Figure 18 yes Figure 17 The EE-line cross-sectional view is shown. The endoscope system of this modified example 3 has the same structure except that the air duct 370 of the endoscope system 1 described above is replaced with air duct 370C. Hereinafter, the air duct 370C, which has a structure different from that of embodiment 1, will be described.

[0117] Air duct 370C is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370C is box-shaped with steps. A first opening 371, a second opening 372 and a third opening 373 are formed in air duct 370C.

[0118] A wall portion 374C is erected on the outer edge of the third opening 373 of the air duct 370C. The wall portion 374C extends perpendicularly to the forming surface of the third opening 373. In a top view viewed from a direction perpendicular to the forming surface of the third opening 373, the wall portion 374C has a U-shape with its base at the outer edge of the second opening 372 side of the third opening 373. Specifically, the wall portion 374C has: a first wall portion 374g, which is provided on the second opening 372 side; a second wall portion 374h, which extends from one end of the first wall portion 374g toward the first opening 371 side; and a third wall portion 374i, which extends from the other end of the first wall portion 374g toward the first opening 371 side. The first wall portion 374g is inclined toward the first opening 371 side relative to the forming surface of the third opening 373. Furthermore, the second wall portion 374h and the third wall portion 374i extend perpendicularly to the forming surface of the third opening portion 373.

[0119] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0120] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370C from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370C, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9After entering the housing 30, the air in airflow F2 collides with the wall portion 374C and flows towards the third opening 373, entering the air duct 370C. By forming the wall portion 374C at the location where it collides with the air entering the housing 30, air can be supplied into the air duct 370C. Through the generation of airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 is stopped.

[0121] In the modified example 3 described above, as a structure for releasing heat drawn into the radiator 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370C that supplies air to the radiator 360. A wall portion 374C is also formed, vertically extending outward from the third opening 373, for supplying air into the air duct 370C. According to modified example 3, even when the fan is stopped, air colliding with the wall portion 374C is drawn into the air duct 370C through the third opening 373, maintaining airflow to the radiator 360 and thus enabling efficient ventilation inside the housing.

[0122] Furthermore, according to Modification 3, since the first wall portion 374g is inclined toward the third opening portion 373, compared with the structure in Embodiment 1 where the forming surfaces of the first wall portion and the third opening portion extend perpendicularly, external air can be efficiently drawn into the air duct 370C.

[0123] (Modification 4 of Implementation Method 1)

[0124] Next, refer to Figures 19-21 A variation 4 of Embodiment 1 of the present invention will be described. Figure 19 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 4 of embodiment 1 of the present invention. Figure 20 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 4 of embodiment 1 of the present invention. Figure 21 yes Figure 20 The FF-line cross-sectional view is shown. The endoscope system in this modified example 4 has the same structure except that the air duct 370 of the endoscope system 1 described above is replaced with air duct 370D. Hereinafter, the air duct 370D, which has a structure different from that of embodiment 1, will be described.

[0125] Air duct 370D is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370D is box-shaped with steps. A first opening 371, a second opening 372 and a third opening 373 are formed in air duct 370D.

[0126] A wall portion 374D is erected on the outer edge of the third opening 373 of the air duct 370D. The wall portion 374D comprises: a first wall portion 374a, which is disposed on the side of the second opening 372; a second wall portion 374b, which extends from one end of the first wall portion 374a toward the side of the first opening 371; a third wall portion 374c, which extends from the other end of the first wall portion 374a toward the side of the first opening 371; and a cover portion 374j, which is connected to the ends of the first wall portion 374a, the second wall portion 374b, and the third wall portion 374c on the side opposite to the side connected to the third opening 373, thus covering the third opening 373. The wall portion 374D is a structure in which the cover portion 374j is provided on the aforementioned wall portion 374.

[0127] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0128] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370D from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370D, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9 After entering the housing 30, the air in airflow F2 collides with the wall 374D and flows towards the third opening 373, entering the air duct 370D. By drawing air in through the wall 374D, air can be supplied into the air duct 370D. Through the generation of airflow F2, the airflow through the heat sink 360 can be maintained even when the first fan 330 is stopped.

[0129] In the modified example 4 described above, as a structure for releasing the heat taken in by the heat sink 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370D that supplies air to the heat sink 360. A wall portion 374D is also formed, vertically extending outward from the third opening 373, for supplying air into the air duct 370D. According to modified example 4, even when the fan is stopped, the air colliding with the wall portion 374D is still taken into the air duct 370D via the third opening 373, maintaining the passage of air to the heat sink 360, thus enabling efficient ventilation within the housing.

[0130] In addition, according to Modification 4, the wall portion 374D has a cover portion 374j, which reliably draws in the air passing through the third opening portion 373, thus enabling the external air to be drawn into the air duct 370D more efficiently.

[0131] (Modification 5 of Implementation Method 1)

[0132] Next, refer to Figures 22-24 A variation 5 of Embodiment 1 of the present invention will be described. Figure 22 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 5 of embodiment 1 of the present invention. Figure 23 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in the modified example 5 of embodiment 1 of the present invention. Figure 23 yes Figure 22 The diagram shows a cross-sectional view along line GG. The endoscope system in this modified example 5 has the same structure as the endoscope system 1 described above, except that the air duct 370 is changed to air duct 370E. Hereinafter, the air duct 370E, which has a structure different from that in embodiment 1, will be described.

[0133] Air duct 370E is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370E is box-shaped with steps. A first opening 371, a second opening 372 and a third opening 373 are formed in air duct 370E.

[0134] A wall portion 374E is erected on the outer edge of the third opening 373 of the air duct 370E. The wall portion 374E comprises: a first wall portion 374g, which is disposed on the side of the second opening 372; a second wall portion 374h, which extends from one end of the first wall portion 374g toward the side of the first opening 371; a third wall portion 374i, which extends from the other end of the first wall portion 374g toward the side of the first opening 371; and a cover portion 374k, which is connected to the ends of the first wall portion 374g, the second wall portion 374h, and the third wall portion 374i on the side opposite to the side connected to the third opening 373, thus covering the third opening 373. The wall portion 374E is a structure in which the cover portion 374k is provided on the wall portion 374C described above.

[0135] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0136] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370E from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370E, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9After entering the housing 30, the air in airflow F2 collides with the wall portion 374E and flows towards the third opening 373, entering the air duct 370E. By forming the wall portion 374E at the location where it collides with the air entering the housing 30, air can be supplied into the air duct 370E. Through the generation of airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 is stopped.

[0137] In Modification 5 described above, as a structure for releasing heat drawn into the radiator 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370E that supplies air to the radiator 360. A wall portion 374E, erected vertically from the third opening 373 and used to supply air into the air duct 370E, is also formed. According to Modification 5, even when the fan is stopped, air colliding with the wall portion 374E is drawn into the air duct 370E via the third opening 373, maintaining airflow to the radiator 360 and thus enabling efficient ventilation within the housing.

[0138] In addition, according to Modification 5, the wall portion 374E has a cover portion 374k, which reliably draws in the air passing through the third opening portion 373, thus enabling the external air to be drawn into the air duct 370E more efficiently.

[0139] (Implementation Method 2)

[0140] Next, refer to Figure 25 and Figure 26 Embodiment 2 of the present invention will be described. Figure 25 This diagram illustrates the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 2 of the present invention. Figure 26 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system according to Embodiment 2 of the present invention. The endoscope system of Embodiment 2 is identical in structure to the endoscope system 1 described above, except that the air duct 370 is replaced with air duct 370F. Hereinafter, the air duct 370F, which has a different structure from that of Embodiment 1, will be described.

[0141] Air duct 370F is disposed on substrate 321 in the same manner as air duct 370, covering heat sink 360. Air duct 370F is box-shaped with steps. A first opening 371, a second opening 372, a third opening 373, and a fourth opening 375 are formed in air duct 370F. The fourth opening 375 is an opening with a rectangular outer edge. In addition, a wall portion 374 is erected on the outer edge of the third opening 373 of air duct 370F.

[0142] The fourth opening 375 is formed at a position on the side of the first communication portion 30a when the air duct 370F is disposed on the substrate 321. Specifically, the fourth opening 375 is formed at a position upstream of the first opening 371 in the air flow path (e.g., airflow F1) in the air duct 370F.

[0143] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0144] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370F from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370F, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9 After entering the housing 30, the air in airflow F2 collides with the wall 374 and flows towards the third opening 373, entering the air duct 370F. By drawing air in through the wall 374, air can be supplied into the air duct 370F. Through the generation of airflow F2, the airflow through the radiator 360 can be maintained even when the first fan 330 is stopped.

[0145] Furthermore, air is drawn into the air duct 370F from the fourth opening 375. Therefore, compared to the case where air is drawn in only from the third opening 373, the amount of air drawn in through the air duct 370F increases, thereby increasing the amount of air passing through the radiator 360.

[0146] In Embodiment 2 described above, as a structure for releasing heat taken in by the radiator 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370F that supplies air to the radiator 360. A wall portion 374, erected from the third opening 373 and used to supply air into the air duct 370F, is also formed. According to Embodiment 2, similar to Embodiment 1, even when the fan is stopped, air colliding with the wall portion 374 is still taken into the air duct 370F via the third opening 373, maintaining airflow to the radiator 360 and thus enabling efficient ventilation inside the housing.

[0147] In addition, according to embodiment 2, a fourth opening 375 is formed in the air duct 370F, and air is also drawn in from the fourth opening 375. Therefore, the amount of air passing through the air duct 370F can be increased, and the radiator 360 can be cooled more efficiently.

[0148] (A variation of Implementation Method 2)

[0149] Next, refer to Figures 27-29 A variation of Embodiment 2 of the present invention will be described. Figure 27 This is a perspective view showing the structure of the air duct in the processing device of the endoscope system provided in a modified embodiment of the present invention, 2. Figure 28 This is a top view showing the structure of the air duct in the processing device of the endoscope system provided in a modified embodiment of the present invention, 2. Figure 29 yes Figure 28 The diagram shows a cross-sectional view along line HH. The endoscope system in this modified example has the same structure as in Embodiment 2, except that the air duct 370F is replaced with air duct 370G. Hereinafter, the air duct 370G, which has a different structure from Embodiment 2, will be described.

[0150] Similar to the air duct 370F, the air duct 370G has a first opening 371, a second opening 372, a third opening 373, and a fourth opening 375. In addition, a wall portion 374 is erected on the outer edge of the third opening 373 of the air duct 370G.

[0151] A protrusion 376 is erected on the outer edge of the fourth opening 375 of the air duct 370G. The protrusion 376 extends perpendicularly from the outer edge of the fourth opening 375 and from the forming surface of the fourth opening 375. The protrusion 376 surrounds at least a portion of the fourth opening 375. Figures 27-29 The convex portion 376 shown extends from the outer edge of the rectangle that forms the fourth opening portion 375, corresponding to the outer edge of three sides.

[0152] Here, with the first fan 330 and the second fan 340 driven, an airflow F1 is generated in the housing 30 (see reference). Figure 9 ).

[0153] On the other hand, when the first fan 330 stops, the airflow entering the air duct 370G from the first opening 371 stagnates. At this time, an airflow F2 is generated in the air duct 370G, where air enters from the third opening 373 and exits from the second opening 372 (see reference). Figure 9 After entering the housing 30, the air in airflow F2 collides with the wall 374 and flows towards the third opening 373, entering the air duct 370G. By drawing air in through the wall 374, air can be supplied into the air duct 370G. Through the generation of airflow F2, the airflow through the heat sink 360 can be maintained even when the first fan 330 is stopped.

[0154] Furthermore, air is drawn into the air duct 370G through the fourth opening 375. Therefore, compared to the case where air is drawn in only through the third opening 373, the amount of air drawn into the air duct 370G increases, allowing for a greater amount of air to pass through the radiator 360. At this time, since the protrusion 376 ensures that air near the fourth opening 375 is drawn in without any omissions, external air can be drawn into the air duct 370G more efficiently.

[0155] In the modified example described above, as a structure for releasing heat taken into the heat sink 360 to the outside of the housing, a third opening 373, different from the first opening 371 where the first fan 330 is installed, is formed in the air duct 370G that supplies air to the heat sink 360. A wall portion 374, erected from the third opening 373 and used to supply air into the air duct 370G, is also formed. According to the modified example, even when the fan is stopped, air colliding with the wall portion 374 is still drawn into the air duct 370G through the third opening 373, maintaining airflow to the heat sink 360 and thus enabling efficient ventilation inside the housing.

[0156] In addition, according to this modified example, a fourth opening 375 is formed in the air duct 370G, and a protrusion 376 surrounding a part of the fourth opening 375 is provided. Therefore, air can also be drawn in from the fourth opening 375. As a result, the amount of air passing through the air duct 370G can be increased, and the radiator 360 can be cooled more efficiently.

[0157] (Implementation Method 3)

[0158] Next, refer to Figure 30 Embodiment 3 of the present invention will be described. Figure 30 This diagram illustrates the structure of the cooling unit provided in the processing apparatus of the endoscope system according to Embodiment 3 of the present invention. The endoscope system of Embodiment 3 is identical in structure to the endoscope system described above, except for the change in the arrangement angle of the first fan 330 in Endoscope System 1.

[0159] In this embodiment 3, the first fan 330 is arranged at a 45° angle relative to the airflow direction (blade arrangement direction) of the second fan 340. However, as long as air can be supplied to the air duct 370, the angle is not limited to 45° and can be set to an angle other than 90° (vertical).

[0160] In Embodiment 3 described above, the same effects as in Embodiment 1 can be obtained. Furthermore, by adjusting the airflow direction of the first fan 330, the air intake efficiency of the air duct 370 can be improved.

[0161] (Implementation Method 4)

[0162] Next, refer to Figure 31 Embodiment 4 of the present invention will be described. Figure 31 This diagram illustrates the structure of the cooling unit provided in the processing apparatus of the endoscope system according to Embodiment 4 of the present invention. The endoscope system of Embodiment 4 is identical in structure to the endoscope system described above, except for the change in the structure of the housing 30 in Endoscope System 1.

[0163] In this embodiment 4, a stepped portion 301 protruding into the interior of the housing 30A is formed on the wall surface (inner wall) opposite to the third opening 373 of the air duct 370. By forming the stepped portion 301, the distance between the wall portion 374 and the inner wall of the housing 30A is reduced, thereby reducing the amount of air passing between the wall portion 374 and the inner wall of the housing 30A. As a result, the amount of air taken in from the third opening 373 can be increased.

[0164] In Embodiment 4 described above, the same effects as in Embodiment 1 can be obtained. Furthermore, by adjusting the protrusion of the step portion 301, the air intake efficiency of the air duct 370 can be adjusted.

[0165] (Implementation Method 5)

[0166] Next, refer to Figure 32 Embodiment 5 of the present invention will be described. Figure 32 This diagram illustrates the structure of the cooling unit provided in the processing device of the endoscope system according to Embodiment 5 of the present invention.

[0167] In this embodiment 5, a plate-shaped component 324 is disposed between the inner wall of the housing 30 and the air duct 370. The component 324 has a plane opposite to the forming surface of the third opening 373 of the air duct 370. With the arrangement of the component 324, the distance between the wall portion 374 and the component 324 becomes smaller than the distance between the inner wall of the housing 30 and the air duct 370, thereby increasing the amount of air drawn in from the third opening 373.

[0168] In Embodiment 5 described above, the same effect as in Embodiment 1 can be obtained. Furthermore, by adjusting the position and angle of component 324, the air intake efficiency of the air duct 370 can be adjusted.

[0169] Furthermore, in the embodiments 1 to 5 described above, an example was given in which the lighting unit 3a and the processing device 3 are integrated. However, the lighting unit 3a and the processing device 3 may also be separate units, for example, with the light source unit 300, the light source driver 310, and the lighting control unit 320 provided outside the processing device 3. In this case, the cooling unit 3c can be provided in each part having a heat-generating element.

[0170] Furthermore, in the above embodiments 1 to 5, examples were described in which the first opening 371, the second opening 372, and the third opening 373 are respectively formed with rectangular or trapezoidal outer edges, but they can also be configured to form elliptical or circular openings.

[0171] Furthermore, in the above embodiments 1 to 5, it was described that the endoscope system of the present invention is an endoscope system 1 that uses a flexible endoscope 2 to observe biological tissues or the like inside the body of the patient, but it can also be applied to rigid endoscopes, industrial endoscopes for observing the properties of materials, and endoscope systems that use an endoscope system in which a camera is connected to the eyepiece of an optical endoscope such as a fiber optic endoscope or an optical viewing tube.

[0172] Industrial availability

[0173] As described above, the endoscope cooling device of the present invention is useful for efficiently ventilating the housing even when the fan drive is stopped.

[0174] Label Explanation

[0175] 1. Endoscopic system

[0176] 2. Endoscope

[0177] 3. Processing device

[0178] 3a Lighting Department

[0179] 3b Processor Unit

[0180] 3C Cooling Section

[0181] 4 Display devices

[0182] 21 Insertion section

[0183] 22 Operations Department

[0184] 23 General purpose cables

[0185] 24. Front end

[0186] 25. Bend

[0187] 26 Flexible tube section

[0188] 30, 30A housing

[0189] 30a First connecting part

[0190] 30b Second connecting part

[0191] 31 Image Processing Department

[0192] 32 Input Section

[0193] 33, 350 Control Department

[0194] 34 Storage Department

[0195] 221 Bent knob

[0196] 222 Processor insertion section

[0197] 223 switch

[0198] 241 Optical Guide

[0199] 242 Illumination Lens

[0200] 243 Optical System

[0201] 244 camera elements

[0202] 244a Light-receiving section

[0203] 244b Readout Section

[0204] 245 bundled cable

[0205] 300 Light Source Department

[0206] 301 Step Section

[0207] 310 Light Source Driver

[0208] 320 Lighting Control Department

[0209] 321~323 base plate

[0210] 324 components

[0211] 330 First Fan

[0212] 331 First Inspection Department

[0213] 340 Second Fan

[0214] 341 Second Inspection Department

[0215] 360 Heatsink

[0216] 370, 370A~370G air duct

[0217] 371 First opening

[0218] 372 Second opening

[0219] 373, 373A Third opening

[0220] 374, 374A~374E Wall section

[0221] 374a, 374d, 374g, First wall section

[0222] 374b, 374e, 374h, second wall section

[0223] 374c, 374f, 374i, third wall section

[0224] 374j, 374k cover

[0225] 375 Fourth opening

[0226] 376 convex part

[0227] F1 and F2 airflow

Claims

1. A cooling device for an endoscope, characterized in that, The cooling device for the endoscope apparatus includes: box; The first connecting part is a hole provided in the box; The second connecting part is a hole provided in the box; A second fan, disposed in the second connecting portion, exhausts gas introduced into the box from the first connecting portion to the outside of the box through the second connecting portion, thereby generating airflow within the box; and An air duct, which houses the heat-generating element intended for cooling, is located within the housing in a manner that allows airflow to pass through it. The air duct has the following features: The first opening is located upstream of the heating element; The first fan is disposed at the first opening and guides the airflow into the air duct so that it comes into contact with the heating element. The second opening, located downstream of the heating element, directs the airflow drawn in by the first fan out of the duct. The third opening is located downstream of the first opening and upstream of the second opening, and opens in the same direction as the opening surface of the first opening. as well as The wall portion is raised in such a way that the downstream edge of the third opening is higher than the upstream edge, so that when the first fan stops, the gas flows from the third opening into the air duct, thereby rectifying the airflow; The wall portion includes: a first wall portion disposed on the side of the second opening, a second wall portion extending from one end of the first wall portion toward the side of the first opening, and a third wall portion extending from the other end of the first wall portion toward the side of the first opening.

2. The cooling device for an endoscope apparatus according to claim 1, wherein, The third opening is arranged laterally and positioned on the step relative to the first opening.

3. The cooling device for an endoscope apparatus according to claim 1, wherein, The heating element has a heating element and a heat sink in contact with the heating element. Whether the gas flows in from the first opening or from the third opening, the gas passes through the radiator.

4. The cooling device for an endoscope apparatus according to claim 1, wherein, The air duct also has a fourth opening, which is located upstream of the first fan in the airflow.

5. The cooling device for an endoscope apparatus according to claim 1, wherein, The cooling device for the endoscope also includes a control unit, which determines whether the first fan has stopped when driving the first fan and the second fan, and increases the output of the second fan if the first fan has stopped.

6. The cooling device for an endoscope apparatus according to claim 5, wherein, When the control unit performs drive control on the first fan and the second fan, it determines whether the second fan has stopped. If it determines that the second fan has stopped, it increases the output of the first fan.

7. The cooling device for an endoscope apparatus according to claim 1, wherein, The cooling device for the endoscope apparatus has a plate-shaped component that is spaced at a predetermined distance from and covers the third opening.

8. The cooling device for an endoscope apparatus according to claim 1, wherein, In the air duct, the third opening is arranged laterally relative to the first opening. The air duct is configured such that the third opening is closer to the inner surface of the box than the first opening.

9. The cooling device for an endoscope apparatus according to claim 1, wherein, The first fan deploys its blades in the same plane direction as the opening surface of the first opening.

10. An endoscope processing device, characterized in that, The endoscope processing apparatus includes the cooling device for the endoscope apparatus as described in claim 1.

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