WO2015178054A1 - 冷却装置及び内視鏡用光源装置 - Google Patents
冷却装置及び内視鏡用光源装置 Download PDFInfo
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- WO2015178054A1 WO2015178054A1 PCT/JP2015/055426 JP2015055426W WO2015178054A1 WO 2015178054 A1 WO2015178054 A1 WO 2015178054A1 JP 2015055426 W JP2015055426 W JP 2015055426W WO 2015178054 A1 WO2015178054 A1 WO 2015178054A1
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- heat
- flow path
- light emitting
- disposed
- heat radiating
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/12—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements
- A61B1/128—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with cooling or rinsing arrangements provided with means for regulating temperature
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0669—Endoscope light sources at proximal end of an endoscope
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/502—Cooling arrangements characterised by the adaptation for cooling of specific components
- F21V29/503—Cooling arrangements characterised by the adaptation for cooling of specific components of light sources
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V29/00—Protecting lighting devices from thermal damage; Cooling or heating arrangements specially adapted for lighting devices or systems
- F21V29/50—Cooling arrangements
- F21V29/60—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air
- F21V29/67—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans
- F21V29/673—Cooling arrangements characterised by the use of a forced flow of gas, e.g. air characterised by the arrangement of fans the fans being used for intake
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D15/00—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies
- F28D15/02—Heat-exchange apparatus with the intermediate heat-transfer medium in closed tubes passing into or through the conduit walls ; Heat-exchange apparatus employing intermediate heat-transfer medium or bodies in which the medium condenses and evaporates, e.g. heat pipes
- F28D15/0275—Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B23/00—Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices
- G02B23/24—Instruments or systems for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B23/2476—Non-optical details, e.g. housings, mountings, supports
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L23/00—Details of semiconductor or other solid state devices
- H01L23/34—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements
- H01L23/46—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids
- H01L23/467—Arrangements for cooling, heating, ventilating or temperature compensation ; Temperature sensing arrangements involving the transfer of heat by flowing fluids by flowing gases, e.g. air
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H05K7/00—Constructional details common to different types of electric apparatus
- H05K7/20—Modifications to facilitate cooling, ventilating, or heating
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B1/00—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor
- A61B1/06—Instruments for performing medical examinations of the interior of cavities or tubes of the body by visual or photographical inspection, e.g. endoscopes; Illuminating arrangements therefor with illuminating arrangements
- A61B1/0661—Endoscope light sources
- A61B1/0684—Endoscope light sources using light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D1/00—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators
- F28D1/02—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid
- F28D1/0233—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels
- F28D1/024—Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, in which the other heat-exchange medium is a large body of fluid, e.g. domestic or motor car radiators with heat-exchange conduits immersed in the body of fluid with air flow channels with an air driving element
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
- F28D21/00—Heat-exchange apparatus not covered by any of the groups F28D1/00 - F28D20/00
- F28D2021/0019—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for
- F28D2021/0028—Other heat exchangers for particular applications; Heat exchange systems not otherwise provided for for cooling heat generating elements, e.g. for cooling electronic components or electric devices
- F28D2021/0029—Heat sinks
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L2924/00—Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
- H01L2924/0001—Technical content checked by a classifier
- H01L2924/0002—Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
Definitions
- the present invention relates to a cooling device and an endoscope light source device for cooling a plurality of heat generating portions.
- a light source device for an endoscope which includes a plurality of solid light emitting elements such as LEDs and laser diodes.
- a cooling device for cooling the solid light emitting element Since the solid light emitting element generates heat during driving, it is necessary to provide a cooling device for cooling the solid light emitting element when the solid light emitting element is used as the light source in the endoscope light source device.
- a cooling device for cooling a solid light emitting element a heat radiating part such as a heat sink is disposed in a flow path through which air as a cooling medium flows, and heat generated by the solid light emitting element by a heat transfer part such as a heat pipe is provided.
- a configuration for transferring to the heat radiating unit is conceivable.
- a cooling device provided in an endoscope light source device including a plurality of solid state light emitting elements
- a plurality of heat radiation portions corresponding to the number of solid state light emitting elements must be disposed in a flow path through which air as a cooling medium flows. Therefore, it is difficult to reduce the size of the cooling device.
- the surface area of the heat dissipating part must be increased toward the downstream side. This is because the temperature of the air increases as it is downstream.
- the decrease in cooling efficiency can be compensated for by increasing the surface area of the heat dissipating part, but this leads to an increase in the size of the apparatus.
- the present invention has been made in view of the above-described points, and an object of the present invention is to downsize a cooling device and a light source device for an endoscope that have a plurality of heat radiation portions and heat transfer portions.
- a cooling device includes a flow path through which a cooling medium passes, and a plurality of heat generated by a plurality of heat generating portions disposed along one side surface of the flow path outside the flow path.
- a plurality of heat transfer parts connecting the heat receiving part and the heat radiating part, and transferring heat between the heat receiving part and the heat radiating part.
- a first channel disposed near the one side surface, and a second channel disposed between the one side surface with the first channel interposed therebetween.
- the heat receiving part is one or more upstream heat receiving parts located on the upstream side of the flow path, and one or more downstream heat receiving parts excluding the upstream heat receiving part
- the heat dissipating part is disposed in the first flow path
- the heat transfer part is provided in one of the upstream heat receiving part and the downstream heat receiving part.
- One or a plurality of connected second heat radiating portions, and one of the first heat radiating portion and the second heat radiating portion connected to the upstream heat receiving portion via the heat transfer portion is the other.
- the heat transfer section which is disposed upstream of the flow path and connected to the second heat radiating section, is disposed so as to pass through the first flow path.
- an endoscope light source device includes a plurality of solid-state light emitting elements as a plurality of heat generating portions and the cooling device.
- FIG. 4 is a sectional view taken along line IV-IV in FIG. 3.
- FIG. 5 is a VV cross-sectional view of FIG. 3. It is a figure which shows the modification of a cooling device. It is a figure which shows the structure of an illumination light emitting device. It is a front view of a mirror holding frame. It is IX-IX sectional drawing of FIG. It is a figure for demonstrating the structure of the light source device 1 for endoscopes of 2nd Embodiment.
- the endoscope light source device 1 of the present embodiment is a device that emits light for illuminating an object observed by the endoscope 100.
- the endoscope 100 has a configuration in which a predetermined observation site in a subject such as a human body or a structure is optically imaged and output to a display device (not shown). Since the configuration of the endoscope 100 is well known, the description thereof will be omitted.
- the endoscope light source device 1 has a connector portion 2 to which a plug portion 101 provided in an endoscope 100 is connected.
- One end 102 a of an optical fiber cable 102 inserted into the endoscope 100 is disposed in the plug portion 101.
- Light incident on one end 102 a of the optical fiber cable 102 is emitted toward the subject of the endoscope 100 from the other end 102 b.
- the endoscope light source device 1 has a plurality of solid light emitting elements as will be described later, and makes light emitted from the solid light emitting elements enter one end 102a of an optical fiber cable 102 connected to the connector portion 2.
- the endoscope light source device 1 includes a cooling device 20 for cooling the solid state light emitting elements (not shown in FIG. 1).
- air is discharged from the air inlet 20 a that is an opening for introducing the air that is the cooling medium into the flow channel 21 provided in the cooling device 20 and the flow channel 21.
- An exhaust port 20b which is an opening for the purpose, is provided. That is, the flow path 21 is a tubular part through which air as a cooling medium passes.
- an intake port 20a is provided on the side surface of the endoscope light source device 1 and an exhaust port 20b is provided on the back surface.
- the locations where the intake port 20a and the exhaust port 20b are provided are as follows. It is not limited to the embodiment.
- the intake port 20a and the exhaust port 20b may be provided on any one of the front surface, the back surface, the top surface, the bottom surface, and the side surface of the endoscope light source device 1.
- the intake port 20a and the exhaust port 20b may be provided on the same surface of the endoscope light source device 1.
- FIG. 2 is a diagram showing an electrical and optical configuration of the endoscope light source device 1.
- the endoscope light source device 1 includes an illumination light emitting device 10, a power supply unit 3, a control unit 4, a light source driving unit 5, an in-casing cooling fan 6, and light source cooling fans 26 and 27.
- the power supply unit 3 is a device that supplies power for driving each part of the endoscope light source device 1.
- the control unit 4 includes an arithmetic device (CPU), a storage device (RAM), an auxiliary storage device, an input / output device, and the like.
- the operation of the endoscope light source device 1 is based on a predetermined program.
- the light source driving unit 5 is an apparatus having an electric circuit that drives a solid-state light emitting element to be described later according to a command from the control unit 4.
- the illumination light emitting device 10 of this embodiment includes four solid-state light emitting elements 11a, 11b, 11c, and 11d.
- Each solid light emitting element 11a, 11b, 11c, 11d may be either a laser diode or a light emitting diode (LED).
- emits is not specifically limited.
- the solid light emitting elements 11 a, 11 b, 11 c, and 11 d are electrically connected to the light source driving unit 5, and emit light according to an electric signal output from the light source driving unit 5. Further, the intensity of the light emitted from the solid light emitting elements 11a, 11b, 11c, and 11d changes according to the electrical signal output from the light source driving unit 5.
- the four solid-state light emitting elements 11a, 11b, 11c, and 11d are LEDs that emit light in a predetermined wavelength range centering on different wavelengths.
- Light emitted from the four solid-state light emitting elements 11a, 11b, 11c, and 11d is collimated by collimator lenses 13a, 13b, 13c, and 13d, and then collected by the dichroic mirrors 12a, 12b, and 12c. Led to.
- the condensing lens 14 condenses the light emitted from the four solid-state light emitting elements 11 a, 11 b, 11 c, and 11 d on one end 102 a of the optical fiber cable 102 located in the connector unit 2.
- the optical axis O when the axis passing through the center of the condensing lens 14 is the optical axis O, one solid light emitting element 11d is disposed on the optical axis O, and the other three solid light emitting elements.
- the elements 11a, 11b, and 11c are disposed at positions off the optical axis O.
- the optical axis O is the central axis of the light emitted from the illumination light emitting device 10.
- each of the solid light emitting elements 11a, 11b, 11c, and 11d are axes O1, O2, O3, and O4, the axis O4 is parallel to the optical axis O.
- the three solid-state light emitting elements 11a, 11b, and 11c are arranged so that the axes O1, O2, and O3 are orthogonal to the optical axis O on the same plane including the optical axis O. Further, on the same plane including the optical axis O, the solid light emitting elements 11a, 11b, and 11c are all arranged on the same side (lower side in FIG. 2) with respect to the optical axis O.
- the collimator lenses 13a, 13b, 13c, and 13d are disposed in front of the solid light emitting elements 11a, 11b, 11c, and 11d, respectively, and emit light from the solid light emitting elements 11a, 11b, 11c, and 11d as parallel light. To do.
- Dichroic mirrors 12a, 12b, and 12c are provided in front of the three collimator lenses 13a, 13b, and 13c.
- the dichroic mirrors 12a, 12b, and 12c are arranged along the optical axis O.
- the dichroic mirrors 12a, 12b, and 12c are arranged so that the reflection surface is orthogonal to the plane including the optical axis O and the axes O1, O2, and O3, and the reflection surface is inclined 45 degrees with respect to the optical axis O on the plane. It is installed.
- the reflective surface of the dichroic mirror 12a reflects light in a predetermined wavelength band including the wavelength of light emitted from the solid light emitting element 11a and transmits light in other wavelength bands.
- the reflection surface of the dichroic mirror 12b reflects light in a predetermined wavelength band including the wavelength of light emitted from the solid light emitting element 11b and transmits light in other wavelength bands.
- the reflecting surface of the dichroic mirror 12c reflects light in a predetermined wavelength band including the wavelength of light emitted from the solid light emitting element 11c and transmits light in other wavelength bands.
- the four solid-state light emitting elements 11a, 11b, 11c, and 11d are arranged so that the central axes of the light emitted from each of them are located on the same plane. Yes. It can be said that the four solid-state light emitting elements 11a, 11b, 11c, and 11d are sequentially arranged in a predetermined direction along the optical axis O. The four solid light emitting elements 11a, 11b, 11c, and 11d are arranged so as not to overlap each other in the direction orthogonal to the optical axis O.
- the number of the solid light emitting elements provided in the illumination light emitting device 10 is not limited to four, and may be two or more.
- the in-casing cooling fan 6 is an electric fan that discharges air in the casing of the endoscope light source device 1.
- the number of rotations of the cooling fan 6 in the housing is detected by the control unit 4.
- the control unit 4 can change the rotation speed of the cooling fan 6 in the housing. Note that a plurality of in-casing cooling fans 6 may be provided.
- the light source cooling fans 26 and 27 are electric fans provided in the cooling device 20 described later.
- the number of rotations of the light source cooling fans 26 and 27 is detected by the control unit 4.
- the control unit 4 can change the rotational speed of the light source cooling fans 26 and 27. Note that two or more light source cooling fans may be provided.
- FIG. 3 is a diagram showing the configuration of the cooling device 20.
- the cooling device 20 is a device that cools the solid light emitting elements 11 a, 11 b, 11 c, and 11 d that are heat generating parts included in the illumination light emitting device 10.
- the cooling device 20 includes a flow path 21, a heat receiving part 22, a heat radiating part 23, and a heat transfer part 24.
- the flow path 21 is a part through which air as a cooling medium passes.
- the channel 21 has a section extending in a direction along the optical axis O. That is, the flow path 21 has a section through which air as a cooling medium flows along the arrangement direction of the solid light emitting elements 11a, 11b, 11c, and 11d.
- One end of the flow path 21 is connected to an intake port 20a provided in the casing, and the other end of the flow path 21 is connected to an exhaust port 20b provided in the casing.
- the air that is the cooling medium flows in a direction from the intake port 20a toward the exhaust port 20b. That is, in the flow channel 21, the direction approaching the intake port 20a is the upstream side of the air flow in the flow channel 21, and the direction approaching the exhaust port 20b is the downstream side.
- the flow path 21 extends along the arrangement direction of the three solid light emitting elements 11a, 11b, and 11c in the vicinity of the back side of the three solid light emitting elements 11a, 11b, and 11c.
- the back surfaces of the three solid-state light emitting elements 11a, 11b, and 11c are surfaces that face in opposite directions to the surfaces that emit the respective lights. That is, three solid light emitting elements 11a, 11b, and 11c are located between the flow path 21 and the optical axis O.
- the four solid-state light emitting elements 11 a, 11 b, 11 c, and 11 d that are a plurality of heat generating portions arranged along the optical axis O are arranged in the flow path 21 along the side surface 21 c of the flow path 21. Are arranged in the order in which the air flows. In FIG. 3, the direction in which the air that is the cooling medium flows in the flow path 21 is indicated by an arrow F.
- the flow channel 21 is divided into two, a first flow channel 21 a and a second flow channel 21 b.
- first flow channel 21a and the second flow channel 21b which are two flow channels, are formed.
- the first channel 21a and the second channel 21b may be formed of independent members.
- the first flow path 21a and the second flow path 21b of the present embodiment have rectangular cross-sectional shapes, but the cross sections of the first flow path 21a and the second flow path 21b.
- the shape may be other shapes such as a circle and a semicircle.
- the first flow path 21a is disposed close to the side surface 21c. Moreover, the 2nd flow path 21b is arrange
- the plurality of heat receiving portions 22 are provided in proximity to each of the four solid-state light emitting elements 11a, 11b, 11c, and 11d, which are a plurality of heat generating portions.
- the plurality of heat receiving portions 22 are members to which heat generated by the solid light emitting elements 11a, 11b, 11c, and 11d is transmitted.
- the heat receiving portion 22 and the solid light emitting elements 11a, 11b, 11c, and 11d may be in contact with each other or in contact with a member that transfers heat therebetween.
- each heat receiving part 22 is arrange
- the shape of the heat receiving part 22 is solid light emitting element 11a, 11b, The shape is not particularly limited as long as it does not block the light emitted from 11c and 11d.
- the four solid light emitting elements 11a, 11b, 11c, and 11d that are the plurality of heat generating portions, corresponding to the two solid light emitting elements 11a and 11b located on the upstream side of the air flow in the flow path 21.
- the two heat receiving portions 22 provided are referred to as upstream heat receiving portions 22a.
- the four solid-state light emitting elements 11a, 11b, 11c, and 11d which are a plurality of heat generating portions, one excluding the upstream heat receiving portion is referred to as a downstream heat receiving portion 22b.
- the plurality of heat radiating portions 23 are heat sinks disposed in the flow path 21.
- the cooling device 10 has four heat radiating portions 23 that are the same number as the heat receiving portions 22.
- the four heat dissipating parts 23 include two first heat dissipating parts 23a disposed in the first flow path 21a and two second heat dissipating parts 23b disposed in the second flow path 21b.
- the two first heat radiating portions 23a are connected to the two downstream heat receiving portions 22b via the heat transfer portions 24, which are heat transfer means, respectively.
- the heat transfer unit 24 is a heat pipe as an example.
- the heat transfer section 24 is not limited to the form of a heat pipe, and may be a member that efficiently transfers heat. That is, the two first heat radiating portions 23 a are provided corresponding to the two solid light emitting elements 11 c and 11 d located on the downstream side of the air flow in the flow path 21.
- the number of heat transfer sections 24 connecting the first heat radiating section 23a and the downstream heat receiving section 22b is appropriately determined according to the amount of heat to be transferred, and may be one or plural. May be.
- the two first heat radiating portions 23 a are arranged in the first flow path 21 a so as not to overlap each other when viewed from the direction along the air flow direction. Further, as shown in FIG. 3, the two first heat radiating portions 23a are arranged in the first flow path 21a so that at least a part thereof overlaps when viewed from a direction orthogonal to the air flow direction. ing.
- the two second heat radiating portions 23b are connected to the two upstream heat receiving portions 22a via the heat transfer portions 25, which are heat transfer means, respectively.
- the heat transfer unit 25 is a heat pipe as an example in the present embodiment.
- the heat transfer unit 25 is not limited to the form of a heat pipe, and may be any member that efficiently transfers heat. That is, the two second heat radiating portions 23b are provided corresponding to the two solid light emitting elements 11a and 11b located on the upstream side of the air flow in the flow path 21.
- the number of heat transfer sections 25 connecting the second heat radiating section 23b and the upstream heat receiving section 22a is appropriately determined according to the amount of heat to be transferred, and may be one or plural. May be.
- the two second heat radiating portions 23b are arranged in the second flow path 21b so as not to overlap each other when viewed from the direction along the air flow direction. Further, as shown in FIG. 3, the two second heat radiating portions 23b are disposed in the second flow path 21b so that at least a part thereof overlaps when viewed from a direction orthogonal to the air flow direction. ing.
- the two 2nd thermal radiation parts 23b have a larger surface area than the two 1st thermal radiation parts 23a.
- the heat-transfer part 25 which connects the 2nd thermal radiation part 23b and the upstream heat receiving part 22a is arrange
- the light source device 1 includes the light source cooling fans 26 and 27 which are two electric fans.
- the light source cooling fans 26 and 27 are for flowing air as a cooling medium at a predetermined flow rate in the first flow path 21a and the second flow path 21b, respectively.
- the light source cooling fans 26 and 27 are disposed in the vicinity of the exhaust port 20b. That is, the light source cooling fans 26 and 27 are disposed on the downstream side of the first heat radiating portion 23a and the second heat radiating portion 23b. In the present embodiment, as an example, the light source cooling fans 26 and 27 are axial fans.
- positioning location of the light source cooling fans 26 and 27 will be specifically limited if the air can be flowed by the predetermined flow volume in the 1st flow path 21a and the 2nd flow path 21b. is not.
- at least one of the light source cooling fans 26 and 27 may be disposed in the vicinity of the intake port 20a.
- at least one of the light source cooling fans 26 and 27 may be a centrifugal fan (blower fan).
- the light source cooling fan 26 provided in the first flow path 21a is a blower fan, and is disposed on the upstream side of the first heat radiating portion 23a.
- the light source cooling fans 26 and 27 are operated, and a predetermined flow rate of air is caused to flow through the first flow path 21a and the second flow path 21b, whereby the solid light emitting element 11a,
- the heat transferred to the heat receiving part 22 from 11b, 11c, 11d can be radiated in the heat radiating part 23. That is, the cooling device 20 can cool the solid light emitting elements 11a, 11b, 11c, and 11d.
- the flow path 21 through which the air that is the cooling medium flows is the first flow path 21 a that is close to the solid light emitting elements 11 a, 11 b, 11 c, and 11 d that are the heat generating units, and the first flow path 21 a.
- the second light channel 21b provided on the opposite side of the solid light emitting elements 11a, 11b, 11c, and 11d is divided into two parts with the flow channel 21a interposed therebetween.
- the two first heat radiating portions 23a disposed in the first flow path 21a do not overlap when viewed from the direction along the air flow direction and are adjacent to each other in the direction orthogonal to the flow direction. It is installed.
- the two second heat radiating portions 23b disposed in the second flow path 21b do not overlap when viewed from the direction along the air flow direction and are adjacent to each other in the direction orthogonal to the flow direction. It is installed. With this configuration, all the first heat radiating portions 23a and the second heat radiating portions 23b are exposed to air having the same temperature as the room temperature taken in from the intake port 20a. Therefore, the surface areas of the first heat radiating part 23a and the second heat radiating part 23b can be reduced, and the cooling device 1 can be reduced in size.
- the length of the heat transfer portion 24 can be shortened, and the heat transfer portion 24 can be shortened. Therefore, the surface area can be reduced. Similarly, the cross-sectional area of the first flow path 20a and the light source cooling fan 26 can be reduced, and the cooling device 1 can be downsized.
- the heat transfer part 25 is routed so as to pass through the first flow path 21a.
- the length can be shortened. Since the heat transfer section 25 is longer than the heat transfer section 24, the surface area of the second heat radiating section 23b needs to be larger than that of the first heat radiating section 23a, but the heat transfer section 25 is routed in the shortest distance. Thus, the increase in the surface area of the second heat radiating portion 23b can be minimized.
- the present invention it is possible to reduce the size of a cooling device having a plurality of heat dissipating sections and heat transfer sections. Further, the endoscope light source device 1 including the cooling device 20 according to the present invention can be reduced in size.
- the two first heat radiating portions 23a disposed in the first flow path 21a are connected to the downstream heat receiving section 22b via the heat transfer section.
- the first flow path 21a The two first heat dissipating parts 23a disposed inside may be connected to the upstream heat receiving part 22a via a heat transfer part.
- the two second heat radiating portions 23b disposed in the second flow path 21b are connected to the downstream heat receiving portion 22b via the heat transfer portion.
- the condenser lens 14, the dichroic mirrors 12a, 12b, 12c and the collimator lenses 13a, 13b, 13c, 13d are fixed to a single holding frame 15.
- the holding frame 15 includes a first wall surface 15a and a second wall surface 15b, which are two flat plate-like portions that are orthogonal to the optical axis O and separated in a direction along the optical axis O, and the first wall surface 15a and the second wall surface 15b.
- a third wall surface 15c which is a flat portion parallel to the optical axis O, and the third wall surface 15a and the second wall surface 15b.
- the third wall surface 15c is parallel to the optical axis O and the third wall surface 15b.
- 4th wall surface 15d which is a flat-plate-shaped site
- the first wall surface 15a is formed with a through hole 16 centered on the optical axis O.
- a condensing lens 14 is fixed in the through hole 16.
- the condenser lens 14 is positioned by being fitted into the through hole 16.
- a through hole 17d centered on the optical axis O is formed in the second wall surface portion 15b.
- a collimator lens 13d is fixed in the through hole 17d.
- the collimator lens 13d is positioned by being fitted into the through hole 17d.
- the third wall surface portion 15c is formed with three through-holes 17a, 17b, and 17c centered on three axes that are orthogonal to the optical axis O and parallel to each other.
- Collimator lenses 13a, 13b, and 13c are fixed in the through holes 17a, 17b, and 17c.
- the collimator lenses 13a, 13b, and 13c are positioned by being fitted into the through holes 17a, 17b, and 17c.
- the mirror holding frame 18 includes a base portion 18b in contact with the fourth wall surface portion 15d and a frame portion 18c standing upright from the base portion 18 to the fourth wall surface portion 15d.
- the frame portion 18c is a rectangular frame-like portion into which the dichroic mirrors 12a, 12b, and 12c are fitted.
- a mirror retainer 18d is fixed to the frame 18c with screws 18e.
- the dichroic mirrors 12a, 12b, and 12c are fixed to the frame portion 18c by the mirror press 18d.
- Notches 18f are formed at both ends of the side of the frame 18c where the base 18b is provided, that is, the side close to the fourth wall surface 15d.
- the notch portion 18f is provided so that the pin 19 standing on the fourth wall surface portion 15d can come into contact with the reflecting surface 18g of the dichroic mirrors 12a, 12b, and 12c.
- a pair of pins 19 are provided for each dichroic mirror 12a, 12b, 12c.
- the dichroic mirrors 12a, 12b, and 12c are fixed to the frame portion 18c by using the mirror presser 18d and the screw 18e. Then, the mirror holding frame 18 is fixed with the screws 18a while the reflecting surfaces 18g of the dichroic mirrors 12a, 12b, and 12c are brought into contact with the pair of pins 19. As described above, the reflecting surfaces 18g of the dichroic mirrors 12a, 12b, and 12c are brought into contact with the pair of pins 19 fixed to the fourth wall surface portion 15d of the holding frame 15, thereby positioning the dichroic mirrors 12a, 12b, and 12c. Made.
- the holding frame 15 that is a single member, the condensing lens 14, the dichroic mirrors 12a, 12b, and 12c that are all optical members that constitute the illumination light emitting device 10, and the collimator.
- the lenses 13a, 13b, 13c, and 13d are positioned and fixed. For this reason, the positioning operation
- the endoscope light source device 1 of the present embodiment shown in FIG. 10 includes a Peltier element 30 and is different from the first embodiment in that the solid light-emitting element is cooled by the Peltier element 30.
- a Peltier element 30 is disposed in the vicinity of at least one of the solid light emitting elements 11a, 11b, 11c, and 11d.
- the Peltier element 30 is provided in the vicinity of the solid light emitting element 11d.
- the operation of the Peltier element 30 is controlled by the Peltier element driving unit 31.
- the Peltier device driving unit 31 can detect whether or not the Peltier device 30 has failed.
- the endoscope light source device 1 detects the temperature of the in-casing temperature detecting unit 32 that detects the temperature in the casing, the solid-state light emitting element temperature detecting unit 33 that detects the temperature of the solid light emitting element 11d, and the temperature of the Peltier element 30.
- a Peltier element temperature detecting unit 34 is provided.
- the in-casing temperature detection unit 32, the solid state light emitting element temperature detection unit 33, and the Peltier element temperature detection unit 34 are electrically connected to the control unit 4.
- the endoscope light source device 1 of the present embodiment includes a light source cooling fan 28 that air-cools the solid light emitting elements 11a, 11b, 11c, and 11d, and an in-housing cooling fan 6 that discharges air in the housing.
- the rotational speeds of the light source cooling fan 28 and the in-casing cooling fan 6 are detected by the control unit 4. Further, the control unit 4 can change the rotational speeds of the light source cooling fan 28 and the in-casing cooling fan 6.
- the control unit 4 includes the number of rotations of the light source cooling fan 28 and the in-casing cooling fan 6, output signals from the in-casing temperature detection unit 32, the solid state light emitting element temperature detection unit 33, and the Peltier element temperature detection unit 34, and the Peltier element. Based on the output signal from the drive part 31, the operation
- the control unit 4 controls the rotation speed of the light source cooling fan 28 and the cooling fan 6 in the casing and the operation of the Peltier element 30 so that the temperature of the solid light emitting element 10d and the temperature in the casing are within predetermined target temperature ranges, respectively. Control.
- the control unit 4 causes the solid light emitting element 11a. , 11b, 11c, and 11d are stopped. Further, even when the temperature of the Peltier element 30 exceeds a predetermined temperature, the control unit 4 stops driving the solid light emitting elements 11a, 11b, 11c, and 11d.
- the control unit 4 stops driving the Peltier element 30 until the temperature of the Peltier element 30 exceeds the temperature in the casing. This is because condensation occurs when the temperature of the Peltier element 30 becomes lower than the temperature in the housing.
- control unit 4 determines that the solid light emitting element temperature detection unit 33 has failed, the control unit 4 stops driving the solid light emitting elements 11a, 11b, 11c, and 11d. In addition, when the control unit 4 determines that the in-case temperature detection unit 32 has failed, the control unit 4 maximizes the number of rotations of the in-case cooling fan 6.
- the control unit 4 determines that the Peltier element 30 and / or the Peltier element temperature detection unit 34 has failed, the control unit 4 stops driving the Peltier element 30 and rotates the light source cooling fan 28 and the in-casing cooling fan 6. Maximize the number. Further, in this case, the control unit 4 reduces the light intensity of the solid light emitting elements 11a, 11b, 11c, and 11d, and the solid light emitting elements 11a, 11b, 11c, and 11d are only cooled by the light source cooling fan 28 and the cooling fan 6 in the housing. To be able to drive continuously. That is, even when the Peltier element 30 breaks down during operation of the endoscope light source device 1 or when the temperature of the Peltier element 30 cannot be detected, the emission of illumination light is continued.
- the present invention is not limited to the above-described embodiment, and can be appropriately changed without departing from the spirit or idea of the invention that can be read from the claims and the entire specification, and a cooling device with such a change.
- the endoscope light source device is also included in the technical scope of the present invention.
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Abstract
Description
本実施形態の内視鏡用光源装置1は、内視鏡100によって観察される対象を照明するための光を発する装置である。内視鏡100は、人体や構造物等の被検体内の所定の観察部位を光学的に撮像し、図示しない表示装置に出力する構成を有する。内視鏡100の構成は周知であるため、説明を省略するものとする。
以下に、本発明の第2の実施形態を説明する。以下では第1の実施形態との相違点のみを説明するものとし、第1の実施形態と同様の構成要素については同一の符号を付し、その説明を適宜に省略するものとする。
Claims (6)
- 冷却媒体が通過する流路と、
前記流路外において、前記流路の一側面に沿って配設された複数の発熱部が発する熱が伝達される複数の受熱部と、
前記流路内に配設された複数の放熱部と、
前記受熱部及び前記放熱部を接続し、前記受熱部及び前記放熱部との間で熱を伝達する複数の伝熱部と、
を具備し、
前記流路は、前記一側面に近接して配設された第1流路、及び前記一側面との間に前記第1流路を挟んで配設された第2流路に分割されており、
前記受熱部は、前記流路の上流側に位置する一つ又は複数の上流側受熱部、及び前記上流側受熱部を除く一つ又は複数の下流側受熱部、を含み、
前記放熱部は、前記第1流路内に配設され、前記上流側受熱部及び前記下流側受熱部のうちの一方に前記伝熱部を介して接続された一つ又は複数の第1放熱部、及び前記第2流路内に配設され、前記上流側受熱部及び前記下流側受熱部のうちの他方に前記伝熱部を介して接続された一つ又は複数の第2放熱部、を含み、
前記第1放熱部及び前記第2放熱部のうち、前記上流側受熱部に前記伝熱部を介して接続された方が、他方よりも前記流路の上流側に配設されており、
前記第2放熱部に接続された前記伝熱部は、前記第1流路内を通過するように配設されている
ことを特徴とする冷却装置。 - 前記第1放熱部は複数であって、前記複数の第1放熱部は、冷却媒体の流れ方向に直交する方向において少なくとも一部が重なり合うように配設されている
ことを特徴とする請求項1に記載の冷却装置。 - 前記複数の第1放熱部は、冷却媒体の流れ方向に沿う方向から見た場合において、互いに重ならないように配設されている
ことを特徴とする請求項2に記載の冷却装置。 - 前記第2放熱部は複数であって、前記第1流路又は前記第2流路内において、前記複数の第2放熱部は、冷却媒体の流れ方向に直交する方向において少なくとも一部が重なり合うように配設されている
ことを特徴とする請求項1から3のいずれか一項に記載の冷却装置。 - 前記複数の第2放熱部は、冷却媒体の流れ方向に沿う方向から見た場合において、互いに重ならないように配設されている
ことを特徴とする請求項4に記載の冷却装置。 - 複数の発熱部としての複数の固体発光素子と、請求項1に記載の冷却装置と、を備えることを特徴とする内視鏡用光源装置。
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CN201580008238.1A CN105979851B (zh) | 2014-05-21 | 2015-02-25 | 冷却装置和内窥镜用光源装置 |
JP2015550512A JP5942049B2 (ja) | 2014-05-21 | 2015-02-25 | 冷却装置及び内視鏡用光源装置 |
EP15796597.1A EP3090679A4 (en) | 2014-05-21 | 2015-02-25 | Cooling device, and light source device for endoscope |
US15/238,285 US10092174B2 (en) | 2014-05-21 | 2016-08-16 | Endoscope light source apparatus |
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JP2014-105494 | 2014-05-21 | ||
JP2014105494 | 2014-05-21 |
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US15/238,285 Continuation US10092174B2 (en) | 2014-05-21 | 2016-08-16 | Endoscope light source apparatus |
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US (1) | US10092174B2 (ja) |
EP (1) | EP3090679A4 (ja) |
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WO2016167031A1 (ja) * | 2015-04-14 | 2016-10-20 | オリンパス株式会社 | 冷却装置及び内視鏡用光源装置 |
WO2017175568A1 (ja) * | 2016-04-04 | 2017-10-12 | オリンパス株式会社 | 内視鏡装置 |
WO2017187830A1 (ja) * | 2016-04-27 | 2017-11-02 | オリンパス株式会社 | 冷却装置及び内視鏡用光源装置 |
EP3263009A3 (de) * | 2016-06-30 | 2018-04-25 | Karl Storz SE & Co. KG | Vorrichtung für die videoendoskopie |
WO2018216381A1 (ja) * | 2017-05-22 | 2018-11-29 | オリンパス株式会社 | 冷却装置 |
CN113164028A (zh) * | 2018-12-18 | 2021-07-23 | 奥林巴斯株式会社 | 内窥镜用光源装置和具有该内窥镜用光源装置的内窥镜 |
US11156350B2 (en) | 2018-08-24 | 2021-10-26 | Olympus Corporation | Light source device |
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CN109124546B (zh) * | 2018-08-31 | 2021-10-22 | 上海澳华内镜股份有限公司 | 一种内窥镜照明用冷却系统及内窥镜 |
DE102019114885B3 (de) | 2019-06-03 | 2020-08-13 | Karl Storz Se & Co. Kg | Vorrichtung zur Wärmeableitung aus einer endoskopischen Beleuchtungseinrichtung |
WO2020247864A1 (en) * | 2019-06-05 | 2020-12-10 | FOHSE Inc. | Led luminaire thermal management system |
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US10617290B2 (en) | 2016-04-27 | 2020-04-14 | Olympus Corporation | Light source apparatus for endoscope having first second and third heat sinks for respective light sources and a first air flow through the first and third heat sinks and a merged air flow through the second heat sink |
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CN113164028A (zh) * | 2018-12-18 | 2021-07-23 | 奥林巴斯株式会社 | 内窥镜用光源装置和具有该内窥镜用光源装置的内窥镜 |
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EP3090679A1 (en) | 2016-11-09 |
EP3090679A4 (en) | 2017-11-08 |
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JPWO2015178054A1 (ja) | 2017-04-20 |
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US20160353984A1 (en) | 2016-12-08 |
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