JP6285240B2 - Broadcast portable camera - Google Patents

Broadcast portable camera Download PDF

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JP6285240B2
JP6285240B2 JP2014064070A JP2014064070A JP6285240B2 JP 6285240 B2 JP6285240 B2 JP 6285240B2 JP 2014064070 A JP2014064070 A JP 2014064070A JP 2014064070 A JP2014064070 A JP 2014064070A JP 6285240 B2 JP6285240 B2 JP 6285240B2
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camera
camera casing
air
fan
heat source
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JP2014212514A (en
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佐藤 純一
純一 佐藤
崇弘 大黒
崇弘 大黒
森 浩之
浩之 森
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Hitachi Kokusai Electric Inc
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本発明はカメラ機構に関するものであり、特に空冷によるカメラ機構の冷却に関するものである。   The present invention relates to a camera mechanism, and more particularly to cooling of a camera mechanism by air cooling.

図6は、従来の放送用カメラの外観図で、特にカメラマンが容易に持ち運び可能な放送用ポータブルカメラの一例を示すものである。
放送用のポータブルカメラは、操作者が肩に担いでレンズを被写体に向けて撮像するものであり、前方にレンズ装着部3を有するカメラ本体1と、アタッチメント可能なカメラアダプタ部2から構成される。カメラ本体1の上部には取っ手4が備えられ、持ち運びが容易である。カメラ本体1とカメラアダプタ部2が接続された状態では、下方には湾曲形状を成す肩パッド5が取り付けられ、カメラマンが肩に担いで操作出来るようになっている。
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.

図7は、上述した図6におけるカメラの内部状態を示す垂直断面図である。カメラ本体1、カメラアダプタ部2には、それぞれ内部にファン6a,6bが設けられている。発熱部品を含む各種電気、電子部品を搭載した基板7a、7bは、カメラレンズ(図示せず)光軸と直交する様に垂直縦置きに配置されている。
ここで、カメラ本体1では、該本体部下方の肩パッド5近傍の吸気口8aより外気(冷気)が吸入され、カメラ本体1の基板7aに搭載された各種電気、電子部品を冷却し、温度上昇した空気が上部に備えられたファン6aによりカメラ本体1上部から排気される。
また、カメラアダプタ部2では、該カメラアダプタ部2下方の吸気口8bより外気(冷気)が吸入され、該カメラアダプタ部2の基板7bに搭載された各種電気、電子部品を冷却し、温度上昇した空気が後方に備えられたファン6bによってカメラアダプタ部2内部より排気され、ダクトを通ってカメラ外部へ下方方向に排気される。
ここで、各々の吸気と排気による風流の方向を図中に矢印で示す。このように、各種電気、電子部品で発生した熱は、おおよそ下方吸気、上方排気による強制空冷によって外部に放出される。
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.

特開2012−172055号公報JP 2012-1752055 A

前述のカメラにおいては、カメラ本体1とカメラアダプタ部2とが仕切り9で分断され、それぞれ別々に空冷ファンが設けられ、各種電気、電子部品で発生した熱は強制対流によって外部に放出されている。
そのため、カメラ本体1、カメラアダプタ部2に別々に空冷ファン6a、6bが配置されていることは、基板の配置に制限が生じ、外部から吸入される冷気の流路が複雑になり、効率よく冷却することができなかった。
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.

更に、カメラマン(操作者)がカメラを肩に担いで撮影する際、カメラはカメラマンの頭部(図示せず)に接近する位置関係となり、カメラ本体上部に設けられた冷却用排気のファン6aから発生する騒音と排出される暖気(排気)がカメラマンに不快感を与えることから、不快感を与えない様に小さなファンしか用いることが出来なかった。このため、内蔵する各種電気、電子部品が発生する熱が大きいと、冷却が困難であった。更に、吸入された冷却風がカメラケースを充分冷却できないと、カメラケースの温度が高くなり、カメラマンに不快感を与えてしまう問題点が生じていた。   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.

本発明は、上述した課題に鑑み、カメラの冷却効率を高めると共に、カメラマンがファンから発する騒音と排出される暖気、及びカメラケースの温度上昇などを気にせずカメラ操作が出来るカメラ構造を実現することを目的とする。   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.

上述した課題を解決するために、本発明に係る放送用ポータブルカメラは、カメラ筐体の周囲壁に少なくとも一つ設けた吸気口と、前記カメラ筐体の後方底部の排気ファンと、前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、前記冷却風が前記カメラ筐体内部の熱源を冷却し、カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする。   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.

また、上述した課題を解決するために、本発明に係る放送用ポータブルカメラは、カメラ筐体上面、或は側面の吸気口と、前記カメラ筐体下部の吸気口と、前記カメラ筐体の後方底部の排気ファンと、前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、前記冷却風が前記カメラ筐体内部の熱源を冷却し、カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする。   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.

また、上述した課題を解決するために、本発明に係る放送用ポータブルカメラは、放送用ポータブルカメラにおいて、カメラ筐体上面及び側面の吸気口と、前記カメラ筐体下部の吸気口と、前記カメラ筐体の後方底部の排気ファンと、前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、前記冷却風が前記カメラ筐体内部の熱源を冷却し、カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする。   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.

また、上述した課題を解決するために、上記それぞれの本発明に係る放送用ポータブルカメラは、前記カメラ筐体内部熱源より大きい熱源を前記カメラ筐体内の前記外周内壁面に配置し、少なくとも前記側面の吸気口から吸入した冷却風が前記外周内壁面に配置した前記熱源に直接吹き当るように流れることを特徴とする。   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.

本発明により、冷却効率が高く、また、カメラマンがファンによる騒音と排出される暖気(排気)、及びカメラケースの温度上昇などが気にならないカメラ構造を実現することができる。   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.

図1(a)は、本発明の一実施形態である放送用カメラの外観をカメラ真横から見た側面図であり、更に、図3(a)のA−A断面方向、および図3(c)のC−C断面方向を説明する図である。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. 図1(b)は、本発明の一実施形態である放送用カメラの外観をカメラレンズ装着側から見た正面図であり、更に、図3(b)のB−B断面方向を説明する図である。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. 図2(a)は、本発明の第一の実施形態である図1の放送用カメラの外観をカメラ斜め下の後方方向から見た斜視図である。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. 図2(b)は、本発明の第一の実施形態である図1の放送用カメラの外観図をカメラ斜め上の前方方向から見た斜視図である。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. 図3(a)は、本発明の第一の実施形態である図2の放送用カメラの内部状態(基板垂直横置き)を示す一例図のA−A水平断面図である。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. 図3(b)は、本発明の第一の実施形態である図2の放送用カメラの内部状態(基板垂直横置き)を示す一例図のB−B垂直断面図である。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. 図3(c)は、本発明の第一の実施形態である図2放送用カメラの内部状態(基板垂直横置き)を示す一例図のC−C垂直断面図である。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. 図4(a)は、本発明の第二の実施形態であるの放送用カメラの内部状態(基板水平横置き)を示す一例図のA−A水平断面図である。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. 図4(b)は、本発明の第二の実施形態である放送用カメラの内部状態(基板水平横置き)を示す一例図のB−B垂直断面図である。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. 図4(c)は、本発明の第二の実施形態である放送用カメラの内部状態(基板水平横置き)を示す一例図のC−C垂直断面図である。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. 図5(a)は、本発明の第三の実施形態であるドッカブル型カメラの放送用カメラ内部状態(基板垂直縦置き)を示す一例図のA−A水平断面図である。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). 図5(b)は、本発明の第三の実施形態であるドッカブル型カメラの放送用カメラ内部状態(基板垂直縦置き)を示す一例図のB−B垂直断面図である。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). 図6は、従来の放送用カメラの外観図である。FIG. 6 is an external view of a conventional broadcast camera. 図7は、図6における従来の放送用カメラの内部状態を示す垂直断面図である。FIG. 7 is a vertical sectional view showing the internal state of the conventional broadcast camera in FIG.

本発明の一実施例に係る放送用カメラは、カメラケース全周壁に少なくとも一つの吸気口を設け、カメラの後方底部に排気用ファンを設置し、吸入した冷却風がカメラ内部の各種電気、電子部品を次々冷却して流れるようにすると共に、カメラケースの内壁面近傍に流路を設けて上記の吸入した冷却風の一部を流すことによりカメラケースの温度上昇を抑え、そして、カメラの後方底部に設置した排気用ファンから温排気(暖気)を斜め下向きに噴出させる構造とするものである。   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.

また、本発明の一実施例に係る放送用カメラは、該カメラ前方の側面または上面、及び下面に吸気口を設け、且つ、カメラの後方底部に排気ファンを設けることで、吸入した冷却風の流れを該カメラ内部の前方から後方底面に向かう流れにし、前記吸入した冷却風が該カメラ内部の熱源部材の熱を冷却すると共に、前記吸入した冷却風の一部を該カメラの内壁面近傍流路に流し、該カメラケースの温度上昇を効率よく抑さえることができる。   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.

また、本発明の一実施例に係る放送用カメラは、該カメラ前方の上面と側面及び下面に吸気口を設け、該カメラの後方底部に排気ファンを設けることで、吸入した冷却風の流れを該カメラ内部の前方上面と側面、及び下面から後方底面に向かう流れにし、前記吸入した冷却風が該カメラ内部の熱源部材の熱を冷却すると共に、前記吸入した冷却風の一部を該カメラの内壁面近傍流路に流し、該カメラケースの温度上昇を効率よく抑さえることができる。   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.

また、本発明の一実施例に係る放送用カメラは、該カメラの内部に配置する複数の基板面をカメラレンズ光軸とほぼ平行となるように横置きに配置し、垂直横置きまたは水平横置きの何れでも良く、垂直横置き又は水平横置きにすべて同じ向きに揃えても、或は垂直横置き、水平横置きと組み合わせて配置してもよい。
また、本発明の一実施例に係る放送用カメラは、後方底部に配置された排気ファンは、風流方向が斜め下の後方に排気されるよう配置される。
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.

本発明の特に第一の実施形態として、放送用のポータブルカメラにおける空冷機構を実施例として図1、2、3の図面を参照しながら説明する。なお、図6,7と同じ機能を果たす部材は同じ番号をつけて説明を省略する。更に、図中に示す白抜き矢印は、吸気、排気またはカメラ内部の風の流れを示すものである。図1(a)は放送用カメラの側面図、図1(b)は正面図であり、図2(a)、図2(b)は本発明の外観図であり、図2(a)はカメラ斜め下の後方方向からの斜視図、図2(b)はカメラ斜め上の前方方向からの斜視図である。
図2(a)、図2(b)において、カメラの筐体の前方側面の吸気口(サイド吸気口10a)、上方部の吸気口(上面吸気口11)、前方下部の吸気口(前方下部吸気口12)が配置されている。また、必要に応じて後方底部には排気口(後方底部排気口20)が配置されている。さらに、必要に応じてカメラの筐体の中央付近の側面の吸気口(サイド吸気口10b)が配置されている。
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.

図3は、本発明の第一の実施形態であり、前述した図1(a)、図1(b)の各断面方向を示す図であり、図3(a)はカメラを上面から見たA−A水平断面方向、図3(b)は側面から見たB−B垂直断面方向、図3(c)は正面から見たC−C垂直断面方向を示す図ある。   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.

図3(a), 図3(b), 図3(c)は、本発明の第一の実施形態である図2の放送用カメラの内部の基板配置が垂直横置き状態を示す一例図であり、図3(a)は図1(a)に示すA−A断面図、図3(b)は図1(b)に示すB−B断面図、図3(c)は図1(a)に示すC−C断面図である。
カメラ内部には、撮像素子の駆動部を搭載する基板やモジュール、信号処理を実行する基板やモジュール、また、FPGAやDSP等が搭載された基板やモジュールなど、発熱部品が各所に搭載されるものであり、例えば図3(a)に示す熱源30、熱源31、カメラ内部熱源32が発熱部品に該当する。
上述した熱源が配置された基板やモジュールは、撮像素子の駆動部を搭載する基板やモジュールを除き、各図に示されるように、その面がカメラの側面とほぼ平行となるように垂直横置きに配置されている。
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.

カメラ内部の空気を強制排気するファン40はカメラ後方底部に配置され、ファン40が稼動すると、サイド吸気口10a、及びサイド吸気口10bから外気(冷気)が吸入され、吸入された外気(冷気)は、カメラ本体1の外側壁13aとガイド板35で囲まれた流路空間に流れ込み、矢印100、101、102に示すように流れ、熱源30上の冷却フィン30f、及び熱源31上の冷却フィン31fから熱を奪うと共に、熱源30、熱源31の発熱によるカメラ本体1の外側壁13aの温度上昇を抑え、ファン40により後方底部排気口20からカメラ外部へ排気される。
特に、熱源30、熱源31の発熱量がカメラ内部熱源32より大きい場合、熱源30、熱源31をカメラ本体1の外側壁13a側に配置したので、サイド吸気口10a、サイド吸気口10bから直接冷気を吸い込んで冷気が熱源に吹き付けられ、効率良く冷却することが可能となる。更に、カメラマンがカメラを右肩に担いだ場合、サイド吸気口10a及びサイド吸気口10bはカメラマンの頭部と反対側に位置するので、吸入する外気(冷気)流が体に当たるなどの不快感を感じることがなく一層有利になる。
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.

一方、ファン40が稼動すると、同時に上面吸気口11から矢印110に示すように、また、前方下部吸気口12から矢印111に示すように、冷気が吸入され、垂直横置きに配置された基板36a、基板36b上を矢印112に示すように流れる。そして、この冷気は、カメラ内部熱源32a,カメラ内部熱源32bを冷却し、ファン40により矢印115のように下方に向きを変え、ファン40を介して後方底部排気口20からカメラ外部へ矢印116のように排気される。なお、上面吸気口11は、図3(b)に図示したように、カメラマンがカメラを右肩に担いだ場合、カメラマンの頭部と反対側となるカメラ上部の側面より吸入される構造となるため、吸入される冷気の流れがカメラマンにとって気になり難い構造である。
更に、上面吸気口11から吸入された冷気は、矢印113に示すようにカメラ本体1の天井壁13cに沿って流れることでカメラ本体1の天井壁13cの温度上昇が抑えられる。更に、前方下部吸気口12から吸入された冷気は、矢印112に示すようにカメラ本体1の外側壁13bと基板36a、基板36bとで囲まれた流路空間に流れ、また、矢印114に示すようにカメラ本体1の床壁13dに沿って流れることでカメラ本体1の外側壁13b、及び床壁13dの温度上昇が抑えられる。
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.

なお、ファン40は、排気がカメラの後方底部から斜め下後方に行われるように斜めに配置されている。この斜め下後方配置により、カメラマンがカメラを担いだ状態において、カメラ内部熱源32の熱を吸収して排気される暖気がカメラマン及び周囲にいる他の人にも吹き付けられ難い構造としている。また、ファン40は、排気がカメラの後方底部から斜め下後方に行われるように配置されていればどのような構造でもよく、例えばファン40を斜めに配置せずに垂直下向きに配置して、ファン40の排気部に斜め下後方に排気が行われるような形状でダクトを設けてもよい。   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.

次に、前述の図3とは異なるカメラ内部構造の他の実施例を説明する。
図4は本発明の第二の実施形態である放送用カメラの内部状態(基板水平横置き)を示す一例図であり、図4(a)は図1(a)に示すA−A水平断面図、図4(b)は図1(b)に示すB−B垂直断面図、図4(c)は図1(a)に示すC−C垂直断面図である。
モジュール、発熱部品などを搭載するカメラ内部の基板は、第一の実施形態である図3と異なり、撮像素子の駆動部をなす基板やモジュールを除き、カメラレンズ(図示せず)光軸と平行する様に水平横置きに配置されている。なお、図3と同じ部材や同じ作用をする冷気の流れを示す矢印などは、同じ番号を付け説明を省略する。
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 cool air which acts the same, attaches the same number and abbreviate | omits description.

ファン40が稼動すると、同時に上面吸気口11から矢印110に示すように、また、前方下部吸気口12から矢印111に示すように、冷気が吸入され、水平横置きに配置された基板37a, 基板37b上を矢印120に示すように流れる。そして、この冷気は、カメラ内部熱源32a, カメラ内部熱源32bを冷却し、矢印114、矢印115のように下方に向きを変え、ファン40により後方底部排気口20からカメラ外部へ矢印116のように排気される。なお、上面吸気口11は、図3(b)に図示したように、カメラマンがカメラを右肩に担いだ場合、カメラマンの頭部と反対側となるカメラ上部の側面より吸気される構造となるため、吸入される冷気の流れがカメラマンにとって気になり難い構造である。
更に、上面吸気口11から吸入された冷気は、矢印113に示すようにカメラ本体1の天井壁13cに沿って流れることでカメラ本体1の天井壁13cの温度上昇が抑えられる。更に、前方下部吸気口12から吸入された冷気は、矢印120に示すようにカメラ本体1の外側壁13bに沿って流れ、また、矢印114に示すようにカメラ本体1の床壁13dに沿って流れることでカメラ本体1の外側壁13b、及び床壁13dの温度上昇が抑えられる。
この基板が水平横置きの場合にも、前述した第一の実施形態である図3による垂直横置きの場合の冷却効率と同様の冷却効率を実現することができる。
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.

例えば、前述した第一の実施形態である図3(基板垂直横置き)では、カメラ内部に設置される各基板やモジュールがほぼ同じサイズである場合に適しており、各基板やモジュールを例えば正面または背面から挿抜することが容易となる。
一方、前述した第二の実施形態である図4(基板水平横置き)では、カメラ内部に設置される各基板やモジュールが異なるサイズである場合に適しており、具体的には、ファンに近い位置の基板やモジュールは遠い位置の基板やモジュールに対して小さな(長さの短い、の意)サイズのものである場合に適している。また、カメラ内部の後方側においては、ファンに近い空間領域が確保され、排気領域をより大きくしていることで、より効率的に排気することができる。また、ファンに近い基板をより小さくすることで、より淀み難い流れとすることができ、より効率的に排気することができる。
以上のように、内部の基板配置を従来のカメラの垂直縦置きから、カメラレンズ光軸とほぼ平行とする垂直横置き、或は水平横置きにレイアウトすることで、複雑であった冷却通風流路を単純化させ、効率良く排気できる構造とする。
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.

以上に詳述したように、本発明の実施の形態によれば、後方底部に排気用のファンを配置することにより、カメラ内部の空間を拡大することもでき、またファンを大型化することもできる。
例えば、後方底部だけに排気用のファンをレイアウトすることにより、カメラ(本体とアダプタ部)内部の空間を拡大させ、大型ファンの適用が可能となる。大口径ファン(口径D)を回転数Nと低速で回転させても、小型ファン(口径Do)を回転数Noと高速で回転させた時の風量Qoより、Q/Qo=(ファン径比の三乗)×(回転数比)=[D/Do]3×[N/No]と示すように、大口径ファンの風量Qは、大きな風量が得られる。更に大型ファンの場合には、ファンの騒音レベルSLは、SL=SLo+10×LOG([N/No]5)と計算式で示すように、大口径ファンの回転数Nを小さくすると、小型ファンの回転数Noに対して回転数比(N/No)の5乗に比例して、ファン騒音は大幅に低減出来る。
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.

また、本発明の実施の形態によれば、カメラマンがカメラを肩にかついだ時、ファンは、従来の構造と比較してカメラマンの耳より遠方に位置するので、ファンによる騒音や排出される暖気の不快感の影響が大幅に低減できる構造となり、且つ、ファン風量が増大出来るので、カメラケース内壁近傍にも風を流すことが出来るため、カメラケースの温度上昇を抑えられる効果がある。
また、カメラの後方底部に備えた排気用のファンからの排気風を斜め下向きに噴出させる構造にしたことで、カメラマン及び隣接する他の人にもファンの騒音と排出される暖気による不快感を与えないようにすることが出来る効果がある。
また、冷却ファンを後方底部に集約することで、使用するファンの数を減らし、省資源、省電力、低コスト化が達成出来るなどの効果がある。
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.

ファンがカメラ後方底部に斜めに配置されることについて、好適なファンの配置角度としては、例えば水平面50度程度下向きに傾けて配置した場合、排気される暖気がカメラの後方に居る人や物に対して吹き付けられ難くなるという点で有効である。
好適なファンの配置角度の範囲としては、ファンが下を向いている状態を基準にしたときに、水平面35度下向きを中心とした前後15度角、すなわち、20度から50度程度であれば、人や物に対する排気による不快感の影響を少なくすることができる。
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.

また、本発明の実施の形態は、底側の土台となるシャーシ部分にファンを設けることで、前後が分離できるドッカブル型でも一体型でも適用可能となるため、自由度の高い製品設計が可能となる。
また、本発明の実施形態である図2と図3、または図2と図4におけるカメラ機構を、本体部とアダプタ部から構成される図5に示すドッカブル型カメラに於いても適用出来る本発明の第三の実施形態について説明する。
即ち、ドッカブル型カメラにでは、カメラ本体部1とカメラアダプタ部2との間に仕切り9が存在するので、仕切り9に開口を設けることで、上面吸気口11及び前方下部吸気口12から吸入された冷気は、カメラ本体部1とカメラアダプタ部2に搭載された熱源を次々冷却し、ファン40により後方底部排気口20からカメラ外部へ排気される。更に、図2に示したカメラの筐体の前方側のサイド吸気口10aをカメラ本体の側面に、カメラの筐体の中央付近の側面の吸気口(サイド吸気口10b)をアダプタ部側に設けることで、カメラ本体1の外側壁13aとガイド板35で囲まれた空間の熱源も効率よく冷却することができる。
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.

本発明の実施形態によれば、放送用のポータブルカメラにおいて、所定の熱源をカメラの側面側に配置し、またカメラ内部の熱源に対しても、カメラの後方底部に排気用ファンを配置することにより、カメラの側面、カメラ天面、またはカメラ下面より吸気した冷気が効率よく流れることにより、カメラの側面側に配置した主要熱源またはカメラ内部の熱源の熱を奪い、暖気となってカメラ筐体外に排気することができる。   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.

以上、本発明の実施形態としての放送カメラ(放送用ポータブルカメラ)について説明したが、本発明は上述した実施形態に限定されるものではなく、本発明の趣旨を逸脱しない範囲で種々変形して実施することができる。   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 カメラ本体、2 カメラアダプタ部、3 レンズ装着部、4 取っ手、5 肩パッド、6a,6b ファン、7a,7b 基板、8a,8b 吸気口、9 仕切り、10a,10b サイド吸気口、11 上面吸気口、12 前方下部吸気口、13a,13b 外側壁、13c 天井壁、13d 床壁、20 後方底部排気口、30,31 熱源、30f,31f 冷却フィン、32a,32b カメラ内部熱源、35 ガイド板、36a,36b 垂直横置き基板、37a, 37b 水平横置き基板、40 ファン、100,101,102,110,111,112,113,114,115,116,120 風の流れ方向を示す矢印

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 (3)

放送用ポータブルカメラにおいて、
カメラ筐体の周囲壁に少なくとも一つ設けた吸気口と、
前記カメラ筐体の後方底部の排気ファンと、
前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、
前記冷却風が前記カメラ筐体内部の熱源を冷却し、カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする放送用ポータブルカメラ。
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.
放送用ポータブルカメラにおいて、
カメラ筐体上面、或は側面の吸気口と、前記カメラ筐体下部の吸気口と、
前記カメラ筐体の後方底部の排気ファンと、
前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、
前記冷却風が前記カメラ筐体内部の熱源を冷却し、カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする放送用ポータブルカメラ。
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.
放送用ポータブルカメラにおいて、
カメラ筐体上面及び側面の吸気口と、前記カメラ筐体下部の吸気口と、
前記カメラ筐体の後方底部の排気ファンと、
前記吸気口から前記カメラ筐体内部に吸入された冷却風が前記カメラ筐体内の基板間を流れる流路と、前記カメラ筐体内の外周内壁面に沿って流れる流路と備え、
前記冷却風が前記カメラ筐体内部の熱源を冷却し、前記カメラ筐体壁の温度上昇を抑えて前記排気ファンから斜め下後方に排気されることを特徴とする放送用ポータブルカメラ。
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.
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