JP2014212514A - Portable camera for broadcasting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To achieve a camera structure for enhancing the cooling efficiency of a camera and enabling a cameraman to perform a camera operation without worrying about noise and warm air generated and discharged from a fan and a temperature rise in a camera case, etc. concerning a portable camera for broadcasting, for example.SOLUTION: A portable camera for broadcasting includes: at least one intake port arranged in a peripheral wall of a camera housing; an exhaust fan arranged in a rear bottom part of the camera housing; a flow passage where cooling air taken in from the intake port to the inside of the camera housing flows between base plates inside the camera housing; and a flow passage where the cooling air flows along an outer peripheral inner wall surface inside the camera housing. The cooling air cools heat sources inside the camera housing so as to suppress the temperature rise of a camera housing wall, and is exhausted to an obliquely lower and rear part from the exhaust fan.

Description

  The present invention relates to a camera mechanism, and more particularly to cooling of a camera mechanism by air cooling.

FIG. 6 is an external view of a conventional broadcast camera, and particularly shows an example of a portable broadcast camera that can be easily carried by a cameraman.
The portable camera for broadcasting is an image that the operator carries on the shoulder and images the lens toward the subject, and is composed of a camera body 1 having a lens mounting part 3 in front and a camera adapter part 2 that can be attached. . A handle 4 is provided on the upper part of the camera body 1 and is easy to carry. In a state where the camera body 1 and the camera adapter unit 2 are connected, a shoulder pad 5 having a curved shape is attached to the lower side so that the cameraman can operate while holding the shoulder pad.

FIG. 7 is a vertical sectional view showing the internal state of the camera in FIG. 6 described above. The camera body 1 and the camera adapter unit 2 are respectively provided with fans 6a and 6b. Substrates 7a and 7b on which various electric and electronic components including heat generating components are mounted are arranged vertically vertically so as to be orthogonal to the optical axis of a camera lens (not shown).
Here, in the camera body 1, outside air (cold air) is sucked from the intake port 8a near the shoulder pad 5 below the body part, and various electric and electronic components mounted on the board 7a of the camera body 1 are cooled to The raised air is exhausted from the upper part of the camera body 1 by the fan 6a provided at the upper part.
In the camera adapter unit 2, outside air (cold air) is sucked from the intake port 8b below the camera adapter unit 2, and various electric and electronic components mounted on the board 7b of the camera adapter unit 2 are cooled to increase the temperature. The air is exhausted from the inside of the camera adapter unit 2 by the fan 6b provided at the rear, and exhausted downward through the duct to the outside of the camera.
Here, the direction of the wind flow by each intake and exhaust is indicated by arrows in the figure. As described above, heat generated in various electric and electronic components is released to the outside by forced air cooling by approximately lower intake and upper exhaust.

JP 2012-1752055 A

In the above-described camera, the camera body 1 and the camera adapter unit 2 are separated by a partition 9, and an air cooling fan is provided separately for each, and heat generated by various electric and electronic components is released to the outside by forced convection. .
For this reason, the fact that the air cooling fans 6a and 6b are separately disposed in the camera body 1 and the camera adapter unit 2 causes restrictions on the arrangement of the substrates, complicates the flow path of the cold air sucked from the outside, and efficiently. Could not cool.

  Further, when the cameraman (operator) takes a picture with the camera on his shoulder, the camera is in a positional relationship approaching the cameraman's head (not shown), and the cooling exhaust fan 6a provided at the upper part of the camera body is used. Since the generated noise and the exhausted warm air (exhaust air) give an unpleasant feeling to the photographer, only a small fan can be used so as not to give an unpleasant feeling. For this reason, if the heat generated by various built-in electric and electronic components is large, cooling is difficult. Furthermore, if the sucked cooling air cannot sufficiently cool the camera case, the temperature of the camera case becomes high, which causes a problem that the cameraman is uncomfortable.

  In view of the above-described problems, the present invention realizes a camera structure that enhances the cooling efficiency of the camera and allows the cameraman to operate the camera without worrying about the noise generated by the fan, the warm air discharged, and the temperature rise of the camera case. For the purpose.

  In order to solve the above-described problems, a portable broadcast camera according to the present invention includes at least one air inlet provided in a peripheral wall of a camera housing, an exhaust fan at a rear bottom portion of the camera housing, and the air inlet. The cooling air sucked into the camera housing from the inside of the camera housing includes a flow path that flows between the substrates in the camera housing, and a flow path that flows along the outer peripheral inner wall surface of the camera housing. A heat source inside the body is cooled, and a temperature rise of the camera casing wall is suppressed, and the exhaust fan is exhausted obliquely downward and rearward.

  In order to solve the above-described problems, a portable broadcast camera according to the present invention includes an intake port on the upper surface or side surface of the camera case, an intake port on the lower side of the camera case, and a rear side of the camera case. An exhaust fan at the bottom, a flow path through which cooling air sucked into the camera casing from the intake port flows between the substrates in the camera casing, and a flow path that flows along the outer peripheral inner wall surface in the camera casing; And the cooling air cools a heat source inside the camera casing and suppresses a rise in the temperature of the camera casing wall, and is exhausted obliquely downward and rearward from the exhaust fan.

  In order to solve the above-described problem, a portable broadcast camera according to the present invention is a portable broadcast camera, wherein the upper and side air intakes of the camera housing, the lower air intake of the camera housing, and the camera An exhaust fan at the rear bottom of the housing, a flow path through which cooling air sucked into the camera housing from the intake port flows between the substrates in the camera housing, and an outer peripheral inner wall surface in the camera housing And a cooling channel that cools a heat source inside the camera housing and suppresses a temperature rise of the camera housing wall, and is exhausted obliquely downward and rearward from the exhaust fan.

  In order to solve the above-described problems, each of the portable portable broadcast cameras according to the present invention includes a heat source that is larger than the heat source inside the camera casing on the inner peripheral wall surface in the camera casing, and at least the side surface. The cooling air sucked from the air intake port flows so as to directly blow against the heat source disposed on the outer peripheral inner wall surface.

  According to the present invention, it is possible to realize a camera structure that has high cooling efficiency and that the cameraman does not care about the warm air (exhaust air) discharged by the fan and the temperature rise of the camera case.

FIG. 1A is a side view of an external appearance of a broadcasting camera according to an embodiment of the present invention as seen from the side of the camera. Further, FIG. It is a figure explaining the CC cross-section direction. FIG. 1B is a front view of the appearance of the broadcasting camera according to the embodiment of the present invention as viewed from the camera lens mounting side, and further illustrates the BB cross-sectional direction of FIG. It is. FIG. 2A is a perspective view of the appearance of the broadcasting camera of FIG. 1 according to the first embodiment of the present invention as seen from the rear side obliquely below the camera. FIG. 2B is a perspective view of an external view of the broadcasting camera of FIG. 1 according to the first embodiment of the present invention as seen from the front obliquely above the camera. FIG. 3A is an AA horizontal sectional view of an example showing an internal state (substrate vertical placement) of the broadcasting camera of FIG. 2 which is the first embodiment of the present invention. FIG. 3B is a vertical sectional view taken along the line B-B of an example showing the internal state (substrate vertical placement) of the broadcasting camera of FIG. 2 according to the first embodiment of the present invention. FIG. 3C is a CC vertical sectional view of an example showing an internal state (substrate vertical placement) of the broadcasting camera of FIG. 2 which is the first embodiment of the present invention. FIG. 4A is an AA horizontal sectional view of an example showing an internal state (horizontal mounting of the substrate) of the broadcasting camera according to the second embodiment of the present invention. FIG. 4B is a BB vertical sectional view of an example showing an internal state (horizontal placement of the substrate) of the broadcasting camera according to the second embodiment of the present invention. FIG. 4C is a C-C vertical cross-sectional view of an example showing an internal state (horizontal placement of the substrate) of the broadcasting camera according to the second embodiment of the present invention. FIG. 5A is an AA horizontal sectional view of an example showing an internal state of the broadcasting camera of the dockable camera according to the third embodiment of the present invention (board vertical orientation). FIG. 5B is a BB vertical sectional view of an example showing an internal state of the broadcasting camera of the dockable camera according to the third embodiment of the present invention (substrate vertical orientation). FIG. 6 is an external view of a conventional broadcast camera. FIG. 7 is a vertical sectional view showing the internal state of the conventional broadcast camera in FIG.

  A broadcasting camera according to an embodiment of the present invention is provided with at least one air inlet on the entire peripheral wall of the camera case, an exhaust fan is installed at the rear bottom of the camera, and the sucked cooling air is supplied to various electric and electronic devices inside the camera. The parts are cooled one after the other, and a flow path is provided near the inner wall of the camera case to prevent a rise in the temperature of the camera case by flowing a part of the sucked cooling air. The structure is such that warm exhaust (warm air) is ejected obliquely downward from an exhaust fan installed at the bottom.

  Further, the broadcasting camera according to an embodiment of the present invention is provided with an intake port on the side or upper surface and lower surface in front of the camera and an exhaust fan at the rear bottom portion of the camera, thereby The flow is made to flow from the front inside the camera toward the rear bottom surface, and the sucked cooling air cools the heat of the heat source member inside the camera, and a part of the sucked cooling air flows near the inner wall surface of the camera. The temperature rise of the camera case can be efficiently suppressed.

  In addition, the broadcasting camera according to an embodiment of the present invention has a suction port on the top, side, and bottom of the front of the camera, and an exhaust fan at the bottom of the rear of the camera, thereby reducing the flow of the sucked cooling air. A flow is directed from the front upper surface and side surfaces inside the camera toward the rear bottom surface, and the sucked cooling air cools the heat of the heat source member inside the camera, and a part of the sucked cooling air is part of the camera. It can flow in the flow path near the inner wall surface and efficiently suppress the temperature rise of the camera case.

The broadcasting camera according to an embodiment of the present invention is configured such that a plurality of substrate surfaces arranged inside the camera are arranged horizontally so as to be substantially parallel to the optical axis of the camera lens, and are arranged vertically or horizontally. Any of the horizontal positions may be used, and they may be aligned in the same direction for the vertical horizontal position or the horizontal horizontal position, or may be arranged in combination with the vertical horizontal position or the horizontal horizontal position.
In the broadcast camera according to the embodiment of the present invention, the exhaust fan disposed at the rear bottom is disposed so that the airflow direction is exhausted obliquely downward.

As a first embodiment of the present invention, an air cooling mechanism in a broadcast portable camera will be described as an example with reference to FIGS. Note that members having the same functions as those in FIGS. Further, white arrows shown in the figure indicate the flow of air in the intake, exhaust, or camera. 1A is a side view of a broadcasting camera, FIG. 1B is a front view, FIGS. 2A and 2B are external views of the present invention, and FIG. FIG. 2B is a perspective view from the front direction obliquely above the camera.
2 (a) and 2 (b), the intake port (side intake port 10a) on the front side surface of the camera casing, the upper intake port (upper surface intake port 11), and the lower front intake port (front lower portion). An air inlet 12) is arranged. Further, an exhaust port (rear bottom exhaust port 20) is disposed at the rear bottom as required. Furthermore, an air inlet (side air inlet 10b) on the side surface near the center of the camera casing is disposed as necessary.

  FIG. 3 shows the first embodiment of the present invention, and is a view showing the respective cross-sectional directions of FIG. 1A and FIG. 1B. FIG. 3A shows the camera as viewed from above. FIG. 3B is a diagram showing a BB vertical sectional direction seen from the side, and FIG. 3C is a diagram showing a CC vertical sectional direction seen from the front.

3 (a), 3 (b), and 3 (c) are examples illustrating the state in which the board layout inside the broadcasting camera of FIG. 2 according to the first embodiment of the present invention is in a vertically horizontal state. 3A is a cross-sectional view taken along the line AA shown in FIG. 1A, FIG. 3B is a cross-sectional view taken along the line BB shown in FIG. 1B, and FIG. It is CC sectional drawing shown to).
Inside the camera, heat-generating components are mounted in various places, such as a board or module that mounts the image sensor drive unit, a board or module that executes signal processing, or a board or module that includes an FPGA or DSP For example, the heat source 30, the heat source 31, and the camera internal heat source 32 shown in FIG.
The board or module on which the heat source is placed is placed horizontally so that its surface is substantially parallel to the side of the camera, as shown in each figure, except for the board or module on which the image sensor drive unit is mounted. Is arranged.

A fan 40 that forcibly exhausts the air inside the camera is disposed at the bottom of the rear of the camera. When the fan 40 is operated, outside air (cold air) is sucked from the side air inlet 10a and the side air inlet 10b, and the outside air (cold air) that is sucked in Flows into the flow path space surrounded by the outer wall 13a of the camera body 1 and the guide plate 35, and flows as indicated by arrows 100, 101, 102, and the cooling fin 30f on the heat source 30 and the cooling fin on the heat source 31. While taking heat from 31f, the temperature rise of the outer wall 13a of the camera body 1 due to heat generation of the heat source 30 and the heat source 31 is suppressed, and the fan 40 exhausts air from the rear bottom exhaust port 20 to the outside of the camera.
In particular, when the heat generation amount of the heat source 30 and the heat source 31 is larger than the camera internal heat source 32, since the heat source 30 and the heat source 31 are arranged on the outer wall 13a side of the camera body 1, the cold air is directly supplied from the side intake port 10a and the side intake port 10b. Then, the cool air is blown to the heat source and can be efficiently cooled. Furthermore, when the cameraman holds the camera on his right shoulder, the side air inlet 10a and the side air inlet 10b are located on the opposite side of the cameraman's head, so there is an unpleasant feeling such as the outside air (cold air) flowing into the body. It becomes more advantageous without feeling.

On the other hand, when the fan 40 is operated, cold air is sucked from the upper air inlet 11 as indicated by an arrow 110 and from the front lower air inlet 12 as indicated by an arrow 111, and the board 36a arranged in a vertical horizontal position. Flows on the substrate 36b as indicated by an arrow 112. The cool air cools the camera internal heat source 32a and the camera internal heat source 32b, changes the direction downward as indicated by an arrow 115 by the fan 40, and passes through the fan 40 from the rear bottom exhaust port 20 to the outside of the camera. So that it is exhausted. As shown in FIG. 3B, the upper surface intake port 11 is structured such that when the cameraman holds the camera on the right shoulder, the upper surface intake port 11 is sucked from the side of the upper part of the camera opposite to the cameraman's head. Therefore, the structure is such that the flow of cool air that is inhaled is less likely to be noticed by the photographer.
Further, the cool air sucked from the upper surface inlet 11 flows along the ceiling wall 13c of the camera body 1 as indicated by the arrow 113, so that the temperature rise of the ceiling wall 13c of the camera body 1 is suppressed. Further, the cold air drawn from the lower front intake port 12 flows into a flow path space surrounded by the outer wall 13b of the camera body 1, the substrate 36a, and the substrate 36b as indicated by an arrow 112, and as indicated by an arrow 114. As described above, by flowing along the floor wall 13d of the camera body 1, the temperature rise of the outer wall 13b and the floor wall 13d of the camera body 1 is suppressed.

  Note that the fan 40 is disposed obliquely so that exhaust is performed obliquely downward and rearward from the rear bottom of the camera. This obliquely rearward rearward arrangement makes it difficult for the cameraman and other people around to absorb the warm air exhausted by absorbing heat from the camera internal heat source 32 when the cameraman is holding the camera. Further, the fan 40 may have any structure as long as the exhaust is arranged obliquely downward and rearward from the rear bottom of the camera, for example, the fan 40 is arranged vertically downward without being obliquely arranged, A duct may be provided in the exhaust portion of the fan 40 in such a shape that exhaust is performed obliquely downward and rearward.

Next, another embodiment of the camera internal structure different from the above-described FIG. 3 will be described.
FIG. 4 is an example showing an internal state (horizontal mounting of the substrate) of the broadcasting camera according to the second embodiment of the present invention. FIG. 4 (a) is a horizontal cross-sectional view taken along line AA shown in FIG. 1 (a). FIG. 4B is a BB vertical sectional view shown in FIG. 1B, and FIG. 4C is a CC vertical sectional view shown in FIG.
Unlike the first embodiment shown in FIG. 3, the substrate inside the camera on which modules, heat generating components and the like are mounted is parallel to the optical axis of the camera lens (not shown) except for the substrate and the module that form the drive unit of the image sensor. It is arranged horizontally and horizontally. In addition, the same member as FIG. 3 or the arrow which shows the flow of the cold air which acts the same, etc. attach the same number, and abbreviate | omit description.

When the fan 40 is operated, at the same time, as shown by the arrow 110 from the upper surface intake port 11 and as indicated by the arrow 111 from the front lower intake port 12, cold air is sucked and the substrate 37a and the substrate placed horizontally horizontally It flows on 37b as shown by an arrow 120. Then, this cool air cools the camera internal heat source 32a and the camera internal heat source 32b, changes the direction downward as indicated by arrows 114 and 115, and is directed from the rear bottom exhaust port 20 to the outside of the camera by the fan 40 as indicated by arrow 116. Exhausted. As shown in FIG. 3B, the upper surface intake port 11 is structured such that when the cameraman holds the camera on the right shoulder, the air is sucked from the side of the upper part of the camera opposite to the cameraman's head. Therefore, the structure is such that the flow of cool air that is inhaled is less likely to be noticed by the photographer.
Further, the cool air sucked from the upper surface inlet 11 flows along the ceiling wall 13c of the camera body 1 as indicated by the arrow 113, so that the temperature rise of the ceiling wall 13c of the camera body 1 is suppressed. Further, the cold air drawn from the front lower intake port 12 flows along the outer wall 13b of the camera body 1 as indicated by an arrow 120, and along the floor wall 13d of the camera body 1 as indicated by an arrow 114. By flowing, the temperature rise of the outer wall 13b and the floor wall 13d of the camera body 1 is suppressed.
Even when the substrate is horizontally placed, the cooling efficiency similar to the cooling efficiency in the case of vertically placed according to FIG. 3 as the first embodiment described above can be realized.

For example, in FIG. 3 (substrate vertical placement) which is the first embodiment described above, it is suitable when the substrates and modules installed in the camera are substantially the same size. Or it becomes easy to insert / extract from the back.
On the other hand, FIG. 4 (board horizontal placement), which is the second embodiment described above, is suitable when each board or module installed in the camera has a different size, and specifically close to the fan. The board or the module at the position is suitable when the board or the module at the position is small (meaning that the length is short) with respect to the board or the module at a far position. Further, on the rear side inside the camera, a space area close to the fan is secured, and the exhaust area is made larger, so that exhaust can be performed more efficiently. In addition, by making the substrate closer to the fan smaller, it is possible to make the flow more difficult to stagnate and to exhaust more efficiently.
As described above, the layout of the internal circuit board is laid out from the vertical orientation of the conventional camera to the horizontal orientation or horizontal orientation that is almost parallel to the optical axis of the camera lens. The road will be simplified and the structure will allow efficient exhaust.

As described above in detail, according to the embodiment of the present invention, the space inside the camera can be enlarged by arranging the exhaust fan at the rear bottom, and the fan can be enlarged. it can.
For example, by laying out an exhaust fan only on the rear bottom, the space inside the camera (main body and adapter) can be expanded, and a large fan can be applied. Even if the large-diameter fan (diameter D) is rotated at a low speed of N, the air volume Qo when the small fan (diameter Do) is rotated at a high speed of No, Q / Qo = (fan diameter ratio As indicated by (cubic) × (rotational speed ratio) = [D / Do] ³ × [N / No], a large air volume is obtained as the air volume Q of the large-diameter fan. In the case of a large fan, the noise level SL of the fan is reduced by reducing the rotational speed N of the large-diameter fan as shown by the calculation formula SL = SLo + 10 × LOG ([N / No] ⁵ ). Fan noise can be greatly reduced in proportion to the fifth power of the rotational speed ratio (N / No) with respect to the rotational speed No of the fan.

Further, according to the embodiment of the present invention, when the cameraman holds the camera over the shoulder, the fan is located farther from the cameraman's ear than the conventional structure, so that the noise generated by the fan and the exhausted warm air can be reduced. Since the influence of unpleasant feeling can be greatly reduced and the fan air volume can be increased, the air can flow also in the vicinity of the inner wall of the camera case, so that an increase in the temperature of the camera case can be suppressed.
In addition, the exhaust air blown from the exhaust fan provided at the rear bottom of the camera is blown diagonally downward, so that the cameraman and other adjacent people can feel the fan noise and the unpleasant feeling caused by the exhausted warm air. There is an effect that can not be given.
Further, by concentrating the cooling fans at the bottom of the rear, there is an effect that the number of fans to be used is reduced and resource saving, power saving and cost reduction can be achieved.

Regarding the fan being arranged obliquely at the bottom of the rear of the camera, as a suitable fan arrangement angle, for example, when it is arranged to be inclined downward by about 50 degrees in the horizontal plane, the exhausted warm air is directed to people or objects behind the camera It is effective in that it is difficult to be sprayed.
As a preferred range of fan arrangement angle, if the fan is facing downward, the angle is 15 degrees forward and backward with a horizontal plane of 35 degrees downward, that is, about 20 to 50 degrees. The influence of discomfort caused by exhaust on people and things can be reduced.

In addition, the embodiment of the present invention can be applied to either a dockable type or an integrated type in which the front and rear can be separated by providing a fan in the chassis part which is the base on the bottom side, which enables a product design with a high degree of freedom. Become.
2 and 3 as an embodiment of the present invention, or the camera mechanism in FIGS. 2 and 4 can be applied to the dockable camera shown in FIG. 5 including a main body and an adapter. The third embodiment will be described.
That is, in the dockable camera, there is a partition 9 between the camera main body 1 and the camera adapter unit 2, so by providing an opening in the partition 9, air is sucked from the upper surface intake port 11 and the front lower intake port 12. The cool air cools the heat sources mounted on the camera body 1 and the camera adapter 2 one after another, and is exhausted from the rear bottom exhaust port 20 to the outside of the camera by the fan 40. Further, the side air inlet 10a on the front side of the camera casing shown in FIG. 2 is provided on the side surface of the camera body, and the side air inlet (side air inlet 10b) near the center of the camera casing is provided on the adapter side. Thus, the heat source in the space surrounded by the outer wall 13a of the camera body 1 and the guide plate 35 can also be efficiently cooled.

  According to the embodiment of the present invention, in a broadcasting portable camera, a predetermined heat source is disposed on the side surface of the camera, and an exhaust fan is disposed on the rear bottom of the camera with respect to the heat source inside the camera. As a result, the cool air sucked from the camera side, the camera top, or the camera bottom flows efficiently, taking heat from the main heat source arranged on the camera side or the heat source inside the camera, and becoming warm air outside the camera housing Can be exhausted.

  The broadcast camera (broadcast portable camera) as an embodiment of the present invention has been described above, but the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Can be implemented.

1 Camera body, 2 Camera adapter part, 3 Lens mounting part, 4 Handle, 5 Shoulder pad, 6a, 6b Fan, 7a, 7b Board, 8a, 8b Air inlet, 9 Partition, 10a, 10b Side air inlet, 11 Top air intake 12 Front lower air inlet, 13a, 13b Outer wall, 13c Ceiling wall, 13d Floor wall, 20 Rear bottom exhaust, 30, 31 Heat source, 30f, 31f Cooling fin, 32a, 32b Camera internal heat source, 35 Guide plate, 36a, 36b Vertical horizontal board, 37a, 37b Horizontal horizontal board, 40 fans, 100, 101, 102, 110, 111, 112, 113, 114, 115, 116, 120 Arrows indicating the direction of wind flow

Claims (4)

In portable broadcast cameras,
At least one air inlet provided in the peripheral wall of the camera housing;
An exhaust fan at the rear bottom of the camera housing;
The cooling air sucked into the camera casing from the intake port flows between the substrates in the camera casing, and the flow path flows along the outer peripheral inner wall surface in the camera casing,
The portable broadcast camera according to claim 1, wherein the cooling air cools a heat source inside the camera casing and is exhausted obliquely downward and rearward from the exhaust fan while suppressing a temperature rise of the camera casing wall.
In portable broadcast cameras,
An inlet on the top or side of the camera casing, and an inlet on the bottom of the camera casing,
An exhaust fan at the rear bottom of the camera housing;
The cooling air sucked into the camera casing from the intake port flows between the substrates in the camera casing, and the flow path flows along the outer peripheral inner wall surface in the camera casing,
The portable broadcast camera according to claim 1, wherein the cooling air cools a heat source inside the camera casing and is exhausted obliquely downward and rearward from the exhaust fan while suppressing a temperature rise of the camera casing wall.
In portable broadcast cameras,
An inlet on the upper and side surfaces of the camera casing, an inlet on the lower part of the camera casing,
An exhaust fan at the rear bottom of the camera housing;
The cooling air sucked into the camera casing from the intake port flows between the substrates in the camera casing, and the flow path flows along the outer peripheral inner wall surface in the camera casing,
The portable broadcast camera according to claim 1, wherein the cooling air cools a heat source inside the camera casing and is exhausted obliquely downward and rearward from the exhaust fan while suppressing a temperature rise of the camera casing wall.
The broadcast portable camera according to any one of claims 1 to 3,
A heat source larger than the heat source inside the camera casing is arranged on the outer peripheral inner wall surface in the camera casing so that at least the cooling air sucked from the intake port on the side surface directly blows on the heat source arranged on the outer peripheral inner wall surface. A portable camera for broadcasting,

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