JP2021196521A - Camera device - Google Patents

Abstract

To make radiation performance and compactification compatible, in a camera device equipped with a housing made of a magnesium alloy.SOLUTION: A camera device C is equipped with a housing 10 that stores a battery 2, and an imaging element 12 and a control substrate 13 housed in the housing 10. The housing 10 has a pair of side wall portions 15L and 15R disposed so as to oppose to each other across the battery 2 and formed by a magnesium alloy. The pair of side wall portions 15L and 15R is composed of a first side wall portion 15L thermally united with the imaging element 12, and a second side wall portion 15R configured separately from the first side wall portion 15L and thermally united with the control substrate 13.SELECTED DRAWING: Figure 7

Description

The present disclosure relates to a camera device.

For example, Patent Document 1 discloses a television camera housing including a chassis body made of a magnesium alloy. According to Patent Document 1, the weight of the TV camera housing can be reduced by forming the chassis body with a magnesium alloy and using the chassis body as a part of the housing.

Further, Patent Document 2 discloses a digital camera housing made of magnesium alloy, which houses a battery or the like. According to Patent Document 2, each of the image sensor and the substrate and the digital camera housing are thermally coupled via the heat transfer member, and the heat generated by each component is dissipated from the digital camera housing. be able to.

Jikkai Sho 56-163366 Gazette Japanese Unexamined Patent Publication No. 2009-86346

However, since the configuration according to Patent Document 2 may transfer heat between the image pickup device and the substrate, there is room for improvement in terms of heat dissipation performance. In order to deal with this, it is conceivable to additionally provide a heat radiating member made of a magnesium alloy or the like, but it is inconvenient to newly install the parts in order to make the camera device compact.

The technology disclosed here was made in view of this point, and the purpose thereof is to achieve both heat dissipation performance and compactification in a camera device provided with a magnesium alloy housing. ..

The first aspect of the present disclosure relates to a camera device. This camera device includes a housing including a battery, an image sensor and a control board housed in the housing, and the housing is arranged so as to face each other with the battery interposed therebetween and magnesium. It has a pair of side wall portions formed of an alloy, and the pair of side wall portions is configured as a separate body from the first side wall portion that is thermally coupled to the image pickup element and the first side wall portion. It consists of a second side wall portion that is thermally coupled to the control substrate.

According to the first aspect, the image sensor is radiated through the first side wall portion, while the control substrate is radiated through the second side wall portion. As a result, heat transfer between the image sensor and the control substrate can be suppressed, and heat dissipation performance can be improved. Further, by sandwiching the battery between the first side wall portion and the second side wall portion, the entire camera device can be compactly configured while thermally separating the first side wall portion and the second side wall portion. ..

As described above, according to the first aspect, in a camera device provided with a magnesium alloy housing, both heat dissipation performance and compactification can be achieved at the same time.

Further, according to the second aspect of the present disclosure, the control board may be accommodated in the space between the second side wall portion and the battery.

According to the second aspect, the control board can be compactly accommodated without impairing the thermal coupling with the second side wall portion. This is effective in achieving both heat dissipation performance and compactification in the camera device.

Further, according to the third aspect of the present disclosure, a metal plate-shaped member is arranged between the control board and the second side wall portion, and the control board is connected to the control board via the plate-shaped member. It may be thermally coupled to the second side wall portion.

According to the third aspect, by connecting the control substrate and the second side wall portion via the plate-shaped member, it is advantageous to improve the heat dissipation performance in the camera device.

Further, according to the fourth aspect of the present disclosure, a battery case for accommodating the battery is arranged between the first side wall portion and the second side wall portion, and the battery case is the first side wall portion. It may be thermally coupled to at least one of the side wall portion and the second side wall portion.

According to the fourth aspect, heat dissipation of the battery can be promoted through the first side wall portion, the second side wall portion, and the like. This is advantageous for improving the heat dissipation performance of the camera device.

Further, according to the fifth aspect of the present disclosure, the camera device may include an exterior cover that covers at least the first side wall portion and the second side wall portion of the housing.

According to the fifth aspect, by providing the exterior cover, it is possible to suppress corrosion of the first side wall portion and the second side wall portion.

Further, according to the sixth aspect of the present disclosure, the upper surface of the housing may be formed of synthetic resin, and a switch may be provided on the upper surface of the housing.

According to the sixth aspect, by forming the upper surface of the housing with synthetic resin, overheating in the peripheral portion of the switch can be suppressed, and by extension, the switch can be operated more safely.

As described above, according to the present disclosure, in a camera device provided with a magnesium alloy housing, both heat dissipation performance and compactification can be achieved at the same time.

FIG. 1 is a perspective view illustrating the appearance of the camera device. FIG. 2 is an exploded perspective view showing a state in which the exterior cover is removed from the camera device. FIG. 3 is a perspective view showing the camera body as viewed from the front. FIG. 4 is an exploded perspective view showing a state in which the first side wall portion is removed from the camera body. FIG. 5 is a perspective view showing the camera body as viewed from the rear. FIG. 6 is an exploded perspective view showing a state in which the second side wall portion is removed from the camera body. FIG. 7 is a vertical sectional view illustrating the internal structure of the camera device.

Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. The following description is an example.

FIG. 1 is a perspective view illustrating the appearance of the camera device C, and FIG. 2 is an exploded perspective view showing a state in which the exterior cover 100 is removed from the camera device C.

In the following description, "front" refers to the direction in which the image pickup lens 11 of the camera device C points, and "rear" refers to the opposite direction. “Up”, “bottom”, “left”, and “right” are also defined with reference to the direction in which the image pickup lens 11 points.

The camera device C according to the present embodiment can be attached to, for example, the head of a human body. When mounted on a human body, the direction along the optical axis A of the image pickup lens 11, that is, the front-back direction of the camera device C coincides with the front-back direction seen from the wearer.

Hereinafter, the configuration of the camera device C will be described in detail.

<Camera device>
FIG. 3 is a perspective view showing the camera body 1 as viewed from the front, and FIG. 4 is an exploded perspective view showing a state in which the first side wall portion 15L is removed from the camera body 1. Further, FIG. 5 is a perspective view showing the camera body 1 as viewed from the rear, and FIG. 6 is an exploded perspective view showing a state in which the second side wall portion 15R is removed from the camera body 1. Further, FIG. 7 is a vertical sectional view illustrating the internal structure of the camera device C.

As shown in FIG. 1, the camera device C includes a camera body 1 that functions as a camera having an image pickup lens 11 and an exterior cover 100 that covers the camera body 1. Among these elements, the camera body 1 is operated by being supplied with electric power from the built-in battery 2 instead of being supplied with electric power from the outside through a power cable or the like.

-Camera body-
Specifically, the camera body 1 includes a housing 10 that houses the battery 2, an image pickup lens 11 provided on the front surface of the housing 10, an image pickup element 12 housed in the housing 10, and a control substrate. It has a battery case 20 for accommodating the battery 2, and a lid portion 14 arranged on the rear surface of the housing 10 and opening and closing the battery case 20.

The housing 10 is formed in a rectangular box shape that extends in the front-rear direction and has a shorter dimension in the left-right direction than in the up-down direction. Inside the housing 10 according to the present embodiment, an image pickup lens 11, an image pickup element 12, a battery case 20, and a battery 2 housed in the battery case 20 are housed in this order from the front.

Further, the left and right side surfaces of the housing 10 are each made of a member made of a magnesium alloy. Specifically, the housing 10 according to the present embodiment has a pair of side wall portions 15L and 15R arranged so as to face each other with the battery 2 interposed therebetween and formed of a magnesium alloy.

Hereinafter, of the pair of side wall portions 15L and 15R, one that partitions the left side surface of the housing 10 is referred to as a first side wall portion 15L, and the other that partitions the right side surface of the housing 10 is referred to as a second side wall portion 15R. do. As illustrated in FIG. 7, the first side wall portion 15L and the second side wall portion 15R are configured as separate members from each other. Further, an image sensor 12, a control substrate 13, a battery case 20, and a battery 2 are arranged between the first side wall portion 15L and the second side wall portion 15R.

Further, at least the upper surface of the housing 10 is partitioned by a separate case body 10a with respect to the first side wall portion 15L and the second side wall portion 15R. Specifically, the case body 10a according to the present embodiment is formed of a member made of synthetic resin. The case body 10a partitions the upper surface, the lower surface, the front surface, and the rear surface of the housing 10, and at the same time, constitutes a storage space for the battery 2 together with the battery case 20. A switch 3 pressed by the user is provided on the upper surface of the housing 10 partitioned by the case body 10a. By pressing the switch 3, the camera body 1 can be operated.

The image pickup lens 11 is arranged near the front surface of the housing 10, and is exposed from the front surface toward the front. As shown in FIG. 1, the image pickup lens 11 is configured to protrude from the front surface of the exterior cover 100 even when the exterior cover 100 is attached to the camera body 1.

The image pickup device 12 includes, for example, a CCD image sensor, a CMOS image sensor, or the like. In particular, the image pickup device 12 according to the present embodiment is arranged behind the image pickup lens 11 and in front of the battery case 20.

Further, as illustrated in FIGS. 3 and 7, the image pickup device 12 is thermally coupled to the first side wall portion 15L. Specifically, a heat transfer sheet 16 having heat transfer properties is connected to the rear surface of the image pickup device 12 according to the present embodiment. One end of the heat transfer sheet 16 is connected to the image pickup device 12 as described above, while the other end of the heat transfer sheet 16 is connected to the first side wall portion 15L. By this connection, the image pickup device 12 and the first side wall portion 15L are thermally coupled via the heat transfer sheet 16.

The battery case 20 is formed in a rectangular thin box shape that extends in the front-rear direction and has a shorter dimension in the left-right direction than in the up-down direction. The battery case 20 can accommodate, for example, a rectangular thin box-shaped battery 2 whose dimensions in the left-right direction are shorter than those in the up-down direction and the front-back direction. The battery 2 is housed in a posture in which the longitudinal direction thereof is along the front-rear direction. The dimensions of the battery case 20 in the vertical direction are shorter than the dimensions of the first side wall portion 15L and the second side wall portion 15R in the same direction. Similarly, the dimensions of the battery case 20 in the front-rear direction are shorter than the dimensions of the first side wall portion 15L and the second side wall portion 15R in the same direction.

More specifically, the battery case 20 has a first case portion 21 constituting the right half portion thereof and a second case portion 22 constituting the left half portion thereof. The first case portion 21 and the second case portion 22 are configured as separate members from each other. Of these, the first case portion 21 is configured in a box shape with its left side open, and is provided with a terminal (not shown) for receiving power from the battery 2. On the other hand, the second case portion 22 is configured in a lid shape that closes the opening of the first case portion 21. The second case portion 22 is configured as a resin member, and is thermally coupled to the first side wall portion 15L via the sheet-shaped heat transfer members 19a and 19c. Although a through hole (see FIG. 4) penetrating the first side wall portion 15L in the thickness direction is provided in the central portion of the first side wall portion 15L, the through hole is exemplified in FIGS. 3 and 4. It is covered with a cover member 19b.

The control board 13 is made of, for example, an application specific integrated circuit (ASIC) or the like. The control board 13 controls the image pickup by the camera body 1. The control board 13 according to the present embodiment is accommodated in the space between the second side wall portion 15R and the battery 2 in a posture along the vertical direction and the front-back direction.

Further, a metal heat transfer plate 17 is arranged between the control substrate 13 and the second side wall portion 15R. Specifically, the heat transfer plate 17 according to the present embodiment is made of, for example, an aluminum alloy, and is formed in a plate shape extending in the front-rear direction and the up-down direction. The heat transfer plate 17 is housed in close contact with the second side wall portion 15R. By accommodating in such a state, the heat transfer plate 17 and the second side wall portion 15R are thermally coupled.

Further, as illustrated in FIGS. 6 and 7, the control substrate 13 is thermally coupled to the second side wall portion 15R. Specifically, a sheet-shaped heat transfer member 18 is attached to the control substrate 13 according to the present embodiment. The front and back surfaces of the heat transfer member 18 are in contact with the control substrate 13, while the other surface is in contact with the heat transfer plate 17. By these contacts, the control substrate 13 and the second side wall portion 15R are thermally coupled to each other via the heat transfer member 18 and the heat transfer plate 17.

-Exterior cover-
As illustrated in FIG. 2, the exterior cover 100 includes a front cover 100F that covers the front surface of the housing 10 of the camera body 1, an upper surface cover 100T that covers the upper surface of the housing 10, and a lower surface cover that covers the lower surface of the housing 10. It has 100B, a left side cover 100L that covers the left side surface of the housing 10, and a right side cover 100R that covers the right side side of the housing 10. The exterior cover 100 made of these members covers at least the first side wall portion 15L and the second side wall portion 15R in the housing 10 of the camera body 1. In particular, in the present embodiment, the exterior cover 100 covers the first side wall portion 15L and the second side wall portion 15R.

<About heat dissipation performance>
As illustrated in FIG. 7, in the camera device 1 according to the present embodiment, the image sensor 12 dissipates heat through the first side wall portion 15L, while the control board 13 dissipates heat through the second side wall portion 15R. be able to. As a result, heat transfer between the image pickup device 12 and the control substrate 13 can be suppressed, and heat dissipation performance can be improved. Further, by sandwiching the battery 2 between the first side wall portion 15L and the second side wall portion 15R, the first side wall portion 15L and the second side wall portion 15R are thermally separated, and the entire camera device 1 is made compact. Can be configured in.

As described above, according to the present embodiment, in the camera device 1 provided with the magnesium alloy housing 10, both heat dissipation performance and compactification can be achieved at the same time.

Further, as illustrated in FIG. 7, by accommodating the control substrate 13 in the space between the second side wall portion 15R and the battery 2, control is performed without impairing the thermal coupling with the second side wall portion 15R. The substrate 13 can be accommodated compactly. This is effective in achieving both heat dissipation performance and compactification in the camera device 1.

Further, as illustrated in FIG. 7, by thermally coupling the control substrate 13 and the second side wall portion 15R via the heat transfer plate 17, it is advantageous to improve the heat dissipation performance in the camera device 1.

Further, as illustrated in FIG. 7, by thermally coupling the battery case 20 and the first side wall portion 15L, heat dissipation of the battery 2 can be promoted through the first side wall portion 15L. This is advantageous for improving the heat dissipation performance of the camera device 1.

Further, as illustrated in FIGS. 1 and 2, the provision of the exterior cover 100 makes it possible to suppress corrosion of the first side wall portion 15L and the second side wall portion 15R.

Further, by forming the case body 10a forming the upper surface of the housing 10 with synthetic resin, overheating in the peripheral portion of the switch 3 can be suppressed, and by extension, the switch 3 can be operated more safely.

<< Other Embodiments >>
In the above embodiment, the battery case 20 and the first side wall portion 15L are configured to be thermally coupled, but the present disclosure is not limited to such a configuration. For example, the battery case 20 may be thermally coupled to the second side wall portion 15R, or the battery case 20 may be thermally coupled to the first side wall portion 15L and the second side wall portion 15R.

C Camera device 1 Camera body 10 Housing 12 Image sensor 13 Control board 15L First side wall 15R Second side wall 2 Battery 20 Battery case 100 Exterior cover

Claims (6)

A housing that houses batteries and
An image sensor and a control board housed in the housing are provided.
The housing has a pair of side walls arranged so as to face each other across the battery and formed of a magnesium alloy.
The pair of side wall portions
A first side wall portion that is thermally coupled to the image sensor,
A camera device characterized by being configured separately from the first side wall portion and including a second side wall portion thermally coupled to the control substrate. In the camera device according to claim 1,
The camera device is characterized in that the control board is housed in a space between the second side wall portion and the battery. In the camera device according to claim 2,
A metal plate-shaped member is arranged between the control board and the second side wall portion.
The camera device is characterized in that the control substrate is thermally coupled to the second side wall portion via the plate-shaped member. In the camera device according to any one of claims 1 to 3.
A battery case for accommodating the battery is arranged between the first side wall portion and the second side wall portion.
The battery case is a camera device characterized in that it is thermally coupled to at least one of the first side wall portion and the second side wall portion. In the camera device according to any one of claims 1 to 4.
A camera device including an exterior cover that covers at least the first side wall portion and the second side wall portion of the housing. In the camera device according to any one of claims 1 to 5.
The upper surface of the housing is made of synthetic resin.
A camera device characterized in that a switch is provided on the upper surface of the housing.

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