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JP-2026074777-A - Imaging device

JP2026074777AJP 2026074777 AJP2026074777 AJP 2026074777AJP-2026074777-A

Abstract

[Problem] To provide an imaging device that can reduce the deterioration of dehumidification performance. [Solution] The system comprises an image sensor 103a, a cooling means 107 for cooling the image sensor 103a, a case comprising a first case 101 and a second case 102 for housing the image sensor 103a and the cooling means 107, a dehumidifying means 109 attached to the first case 101 for dehumidifying the inside of the case, a heat dissipation section 108 provided in the second case 102 and thermally connected to the cooling means 107, and flow paths 12 to 14 installed adjacent to the case for generating intake and exhaust airflow by a blower, wherein the heat dissipation section 108 is located inside the flow paths 12 to 14, and the moisture-dissipating surface 109a of the dehumidifying means 109 is located on the intake side of the heat dissipation section 108 and exposed inside the flow paths 12 to 14. [Selection Diagram] Figure 4

Inventors

  • 安武 佑太

Assignees

  • キヤノン株式会社

Dates

Publication Date
20260507
Application Date
20241021

Claims (12)

  1. Image sensor and A cooling means for cooling the image sensor, A case comprising a first case and a second case, which houses the image sensor and the cooling means, A dehumidifying means attached to the first case for dehumidifying the inside of the case, A heat dissipation section is provided in the second case and is thermally connected to the cooling means, The case is provided with a passage that is installed adjacent to the aforementioned case and generates an airflow for intake and exhaust by a blowing means, The heat dissipation section is arranged inside the flow path. An imaging device characterized in that the moisture-releasing surface of the dehumidifying means is arranged to be exposed inside the flow path on the intake side of the heat dissipation section.
  2. The imaging apparatus according to claim 1, characterized in that the first case is positioned on the side facing the shooting direction, and the second case is positioned on the side opposite to the shooting direction.
  3. The second case has through holes for leading out the cable connected to the image sensor and the cable connected to the cooling means to the outside. The imaging apparatus according to claim 1 or 2, characterized in that the through hole is located on the same side as the dehumidifying means with respect to the image sensor.
  4. The aforementioned flow path is installed adjacent to the second case, The imaging apparatus according to claim 1 or 2, characterized in that the moisture-releasing surface of the dehumidifying means is exposed to the inside of the flow path through an opening provided in the second case.
  5. The aforementioned flow path is installed adjacent to the first case and the second case, The imaging apparatus according to claim 1 or 2, characterized in that the moisture-releasing surface of the dehumidifying means is exposed to the inside of the flow path through an opening provided in the first case.
  6. The imaging apparatus according to claim 1 or 2, characterized in that the first case is made of a material with lower thermal conductivity compared to the second case.
  7. The imaging apparatus according to claim 1 or 2, characterized in that the second case is made of metal.
  8. The imaging apparatus according to claim 1 or 2, characterized in that the first case is made of resin.
  9. The imaging apparatus according to claim 1 or 2, characterized in that an insulating material is interposed between the first case and the second case.
  10. The dehumidifying means is provided with a holding member, The imaging apparatus according to claim 1 or 2, characterized in that the retaining member is attached to the first case via the retaining member.
  11. The imaging apparatus according to claim 10, characterized in that the holding member is made of resin.
  12. The imaging apparatus according to claim 1 or 2, characterized in that the cooling means is a Peltier element.

Description

This invention relates to an imaging apparatus equipped with a dehumidifying means. Conventionally, imaging devices equipped with a cooling element to cool the image sensor have been provided in order to suppress the deterioration of image quality due to the temperature rise of the image sensor. In this type of imaging device, due to the characteristic that the cooling element can cool the image sensor to below ambient temperature, condensation may occur inside the housing that houses the image sensor due to the cooling of the cooling element. If condensation occurs inside the housing that houses the image sensor, it is thought that problems such as short circuits in electrical components may occur. As a countermeasure, a configuration has been proposed that includes a dehumidifying means for dehumidifying the inside of the housing that houses the image sensor. For example, Patent Document 1 discloses a technology that allows moisture to be efficiently released by embedding the dehumidifying means in the wall surface near the cooling means. Japanese Patent Publication No. 2009-152972 This is an exploded perspective view of the imaging device according to the first embodiment.This is a perspective view of the imaging unit and its surrounding structure of the imaging apparatus according to the first embodiment.This is an exploded perspective view of the imaging unit of the imaging device according to the first embodiment.This is a cross-sectional view of the imaging unit and its surrounding structure of an imaging device according to the first embodiment.This is an exploded perspective view of the imaging unit of the imaging device according to the second embodiment.This is a cross-sectional view of the imaging unit and its surrounding structure of an imaging device according to the second embodiment.This is a perspective view of the imaging unit and its surrounding structure of the imaging apparatus according to the third embodiment.This is an exploded perspective view of the imaging unit of the imaging device according to the third embodiment.This is a cross-sectional view of the imaging unit and its surrounding structure of an imaging device according to the third embodiment. The following describes preferred embodiments of the present invention with reference to the attached drawings. Note that descriptions of components, parts, mounting structures, etc., that are not directly related to the present invention may be omitted or not shown. Furthermore, for the sake of clarity, the shapes of components and parts may be described in a simplified manner. <First Embodiment> Referring to Figure 1, the schematic configuration of the imaging device 1 according to the first embodiment will be described. Figure 1 is an exploded perspective view of the imaging device 1. In this application, the front and back directions are defined with the shooting direction, which is the direction in which the image sensor 103a of the imaging unit 100 faces, as the front. The imaging device 1 comprises a main housing 4, a front housing 5, a rear housing 6, a first side panel 7, and a second side panel 8. The front housing 5, the rear housing 6, the first side panel 7, and the second side panel 8 are fixed to the main housing 4 by fastening members (not shown), forming the exterior of the imaging device 1. Inside the imaging device 1, as will be described later, an imaging unit 100, an intake duct 12, an exhaust duct 13, a fan unit 14, and a control board 15 are installed. The front housing 5 is provided with a mount portion 5a to which an interchangeable lens for photographing a subject is attached. The rear housing 6 has a number of through holes (not shown), from which connectors (not shown) for connecting the imaging device 1 to external equipment and buttons (not shown) for inputting instructions to the imaging device 1 protrude. The first side panel 7 has an air intake port 7a. The air intake port 7a communicates with an air intake duct 12 installed inside the imaging device 1 and draws air into the air intake duct 12. The second side panel 8 has an exhaust port 8a. The exhaust port 8a communicates with an exhaust duct 13 installed inside the imaging device 1, and exhausts air from the exhaust duct 13. Next, the internal configuration of the imaging device 1 will be described with reference to Figures 2 to 4. Figure 2 is a perspective view of the imaging unit 100 and its surrounding structure. Figure 3 is an exploded perspective view of the imaging unit 100. Figure 4 is a cross-sectional view of the imaging unit 100 and its surrounding structure. The case (housing) of the imaging unit 100 comprises a first case 101 positioned on the side facing the imaging direction and a second case 102 positioned on the side opposite to the imaging direction, with a substantially sealed space formed inside. The second case 102 has a substantially plate shape, and the first case 101 has a substantially thin box shape with an opening on the si