# US 2016/0353984 A1 · Cooling device and endoscope light source apparatus

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- Number: US 2016/0353984 A1
- Document ID: US20160353984A1
- Status: Published application
- Kind: A1
- Application number: 15/238,285
- Filed: 2016-08-16
- Published: 2016-12-08
- Earliest claimed: 2014-05-21
- Assignees: Olympus Corporation
- Applicants: Olympus Corporation
- Inventors: Yutaka SHIROTA; Takahiro MASAKI
- Web page: https://patentgrep.com/patent/US20160353984A1

## CPC

- A61B 1/128: {provided with means for regulating temperature}
- A61B 1/0669: {at proximal end of an endoscope}
- F21V 29/503: of light sources (cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H10H20/858)
- F21V 29/60: characterised by the use of a forced flow of gas, e.g. air
- F21V 29/673: {the fans being used for intake}
- F28D 15/0275: {Arrangements for coupling heat-pipes together or with other structures, e.g. with base blocks; Heat pipe cores}
- G02B 23/24: Instruments {or systems} for viewing the inside of hollow bodies, e.g. fibrescopes
- G02B 23/2476: {Non-optical details, e.g. housings, mountings, supports}
- H05K 7/20: Modifications to facilitate cooling, ventilating, or heating
- H10W 40/43: by flowing gases, e.g. forced air cooling
- A61B 1/0684: {using light emitting diodes [LED]}
- F28D 1/024: {with an air driving element}
- F28D 2021/0029: {Heat sinks}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- F21V: FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F28D: HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT (fluid heaters having heat generating means and heat transferring means F24H; furnaces F27; details of heat-exchange apparatus of general)
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- H05K: PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A cooling device according to the invention includes: a first flow channel configured so that a coolant passes; a first heat receiving portion; a first heat radiating portion arranged in the first flow channel; a first heat transferring portion configured to transfer heat from the first heat receiving portion to the first heat radiating portion; a second flow channel configured so that the coolant passes; a second heat receiving portion; a second heat radiating portion arranged in the second flow channel; and a second heat transferring portion configured having a longer length than the first heat transferring portion and transferring heat from the second heat receiving portion to the second heat radiating portion. The second heat radiating portion is configured having a larger surface area than the first heat radiating portion.

## Claims

### Claim 1

A cooling device comprising:
a first flow channel configured so that a coolant passes;
a first heat receiving portion configured so that heat generated by a first heat generating portion, between the heat generated by the first heat generating portion and heat generated by a second generating portion, is transferred, the first and second heat generating portions being arranged along one side surface of the first flow channel outside the first flow channel;
a first heat radiating portion arranged in the first flow channel;
a first heat transferring portion configured to connect the first heat receiving portion and the first heat radiating portion and transfer heat from the first heat receiving portion to the first heat radiating portion;
a second flow channel configured so that the coolant passes, the second flow channel being provided with the first flow channel sandwiched between the one side surface and the second flow channel;
a second heat receiving portion configured so that the heat generated by the second heat generating portion is transferred;
a second heat radiating portion arranged in the second flow channel; and
a second heat transferring portion configured having a longer length than the first heat transferring portion and configured to connect the second heat receiving portion and the second heat radiating portion and transfer heat from the second heat receiving portion to the second heat radiating portion; wherein
the second heat radiating portion is configured having a larger surface area than the first heat radiating portion.

### Claim 2 (depends on 1)

The cooling device according to claim 1, wherein a plurality of the first heat radiating portions are provided, and the plurality of first heat radiating portions are arranged so that at least parts are overlapped in a direction orthogonal to a flow direction of the coolant.

### Claim 3 (depends on 2)

The cooling device according to claim 2, wherein the plurality of first heat radiating portions are arranged so as not to be mutually overlapped when seen from a direction along the flow direction of the coolant.

### Claim 4 (depends on 1)

The cooling device according to claim 1, wherein a plurality of the second heat radiating portions are provided, and the plurality of second heat radiating portions are arranged so that at least parts are overlapped in the direction orthogonal to the flow direction of the coolant, in the second flow channel.

### Claim 5 (depends on 4)

The cooling device according to claim 4, wherein the plurality of second heat radiating portions are arranged so as not to be mutually overlapped when seen from the direction along the flow direction of the coolant.

### Claim 6 (depends on 1)

An endoscope light source apparatus comprising a plurality of solid light emitting devices as the first and second heat generating portions, and the cooling device according to claim 1.