# US 2019/0174030 A1 · Image pickup apparatus with cooling mechanism

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- Number: US 2019/0174030 A1
- Document ID: US20190174030A1
- Status: Published application
- Kind: A1
- Application number: 16/203,834
- Filed: 2018-11-29
- Published: 2019-06-06
- Earliest claimed: 2017-12-05
- Assignees: Canon Kabushiki Kaisha
- Applicants: Canon Kabushiki Kaisha
- Inventors: Yasuhiro Kojima
- Web page: https://patentgrep.com/patent/US20190174030A1

## CPC

- H04N 23/51: Housings
- G03B 17/55: with provision for heating or cooling, e.g. in aircraft
- G05D 23/1919: {characterised by the type of controller}
- H04N 23/52: Elements optimising image sensor operation, e.g. for electromagnetic interference [EMI] protection or temperature control by heat transfer or cooling elements
- H04N 23/54: Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION
- G03B: APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR (optical parts of such apparatus G02B; photosensitive materials or processes for photographic purposes G03C; apparatus for processing exposed photographic materials G03D)
- G05D: SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES

## Abstract

An image pickup apparatus which is capable of efficiently cooling itself using a general-purpose ice pack so as to be able to shoot without heating an exterior surface thereof to a high temperature even under a high temperature environment. A cooling unit of the image pickup apparatus has a first duct having an inlet, a second duct connected to the first duct, and a third duct having an outlet and connected to the second duct. The second duct is thermally connected to a first heat source, the third duct is thermally connected to a second heat source that generates a larger amount of heat than the first heat source, and air taken in through the inlet passes through the first duct, the second duct, and the third duct in this order and is discharged through the outlet.

## Claims

### Claim 1

An image pickup apparatus comprising:
a cooler configured to comprise a first duct having an inlet, a second duct connected to the first duct, and a third duct having an outlet and connected to the second duct,
wherein the second duct is thermally connected to a first heat source, the third duct is thermally connected to a second heat source that generates a larger amount of heat than the first heat source, and air taken in through the inlet passes through the first duct, the second duct, and the third duct in this order and is discharged through the outlet.

### Claim 2 (depends on 1)

The image pickup apparatus according to claim 1, wherein the first duct and the second duct are placed substantially perpendicularly to each other, and the second duct and the third duct are placed substantially perpendicularly to each other.

### Claim 3 (depends on 2)

The image pickup apparatus according to claim 2, wherein the first duct and the third duct are placed substantially parallel to each other.

### Claim 4 (depends on 2)

The image pickup apparatus according to claim 2, wherein the first duct is placed on an upper side of the image pickup apparatus, and the third duct is placed on a lower side of the image pickup apparatus.

### Claim 5 (depends on 1)

The image pickup apparatus according to claim 1 wherein the first heat source includes an image pickup device.

### Claim 6 (depends on 1)

The image pickup apparatus according to claim 1 wherein an ice pack is allowed to come into contact with an exterior surface of the first duct.

### Claim 7 (depends on 1)

The image pickup apparatus according to claim 1, wherein a plurality of screw insertion holes is provided on an exterior surface of the first duct.

### Claim 8 (depends on 7)

The image pickup apparatus according to claim 7, wherein rib-shaped portions for forming threads of screw members to be inserted into the screw insertion holes are provided on an inner side of the exterior surface, and the rib-shaped portions are fin-shaped.

### Claim 9 (depends on 1)

The image pickup apparatus according to claim 1 wherein the second duct is provided with fin-shaped portions of a heat sink.

### Claim 10 (depends on 9)

The image pickup apparatus according to claim 9, wherein a second inlet is formed on the second duct closer to the first duct than the fin-shaped portions of the heat sink, and a lid member that covers the second inlet such that the second inlet is able to open and close is provided.