JP2017116816A - Imaging device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging device capable of reducing a size of a device main body and enhancing heat radiation efficiency, and further, capable of securing a suction and exhaust space even when approaching a wall upon photographing.SOLUTION: An imaging device is installed on one side surface in a width direction of a device main body, and includes: a suction port 230 for sucking an outside air by the driving of a fan 300 and an exhaust port 240 for exhausting the sucked air; and a duct 301 provided inside the device main body and having a suction part 325 in communication with the suction port 230, an exhaust part 327 in communication with the exhaust port 240, and a cooling part 326 to which the suction part 325 and the exhaust part 327 are connected, respectively. The suction part 325 and the exhaust part 327 are connected to the cooling part 326 in a direction to cross the cooling part 326, respectively. A space 307 surrounded by the cooling part 326, the suction part 325, and the exhaust part 327 is installed with an attachment part for detachably attaching a recording medium. The attachment part is arranged to be protruded to the outside of the width direction of the device main body from the suction part 230 and the exhaust port 240.SELECTED DRAWING: Figure 17

Description

  The present invention relates to an imaging apparatus such as a digital video camera for business use such as broadcasting, and more particularly to an imaging apparatus having a forced air cooling structure using a fan.

  Broadcasting and other professional digital camcorders have many shooting styles in which the photographer holds the camera body on his shoulder, and in order to reduce the burden on the photographer's shoulder, A shoulder pad is provided at the part that hits the shoulder.

  In addition, this type of digital video camera is required to be downsized, but with the demand for higher functionality and higher image quality, it leads to an increase in power consumption, higher exterior temperature and guaranteed internal electrical element temperature. Thermal runaway caused by exceeding In the case of a shoulder-mounted type digital video camera, the photographer's face is located near one side of the camera body, so an air intake and exhaust port are provided on the other side of the camera body and forced air cooling is performed by a fan. Technology has been proposed (Patent Document 1). In this proposal, a compartment is provided so that raindrops and the like do not enter the camera body even if the intake port and the exhaust port are enlarged.

JP 2009-151037 A

  However, in Patent Document 1, since there is no duct structure from the intake port to the exhaust port, it is difficult to efficiently dissipate heat generated by the internal electric elements. In addition, since the intake and exhaust ports are located on the same plane as the side exterior of the camera body, if the side of the camera body approaches a wall or the like during shooting, the intake and exhaust ports are blocked by the wall. Air can no longer be sucked or exhausted, and thermal runaway may occur.

  Accordingly, the present invention provides an image pickup apparatus that can reduce the size of the apparatus main body, increase heat dissipation efficiency, and can secure an air intake / exhaust space even when approaching a wall at the time of photographing. The purpose is to provide.

  In order to achieve the above object, an imaging apparatus according to the present invention includes a fan, an air inlet that is disposed on one side surface in the width direction of the apparatus main body, and sucks external air by driving the fan. An air outlet that is disposed on one side surface in the width direction and that generates an airflow of air sucked from the air inlet by driving the fan and exhausts the airflow; and an air outlet provided inside the apparatus main body. An intake portion communicating with the exhaust port, an exhaust portion communicating with the exhaust port, and a duct having a cooling portion to which the intake portion and the exhaust portion are connected, respectively. A recording medium is detachably mounted in a space inside the duct that is connected to the cooling unit in a direction intersecting the cooling unit and surrounded by the cooling unit, the intake unit, and the exhaust unit. Department and entrance / exit At least one of the members of the terminal portion is disposed, said member is characterized by being arranged to protrude outwardly in the width direction of the apparatus main body from the intake port and the exhaust port.

  According to the present invention, there is provided an imaging apparatus that can reduce the size of the apparatus main body, increase heat dissipation efficiency, and can secure an air intake / exhaust space even when approaching a wall at the time of photographing. Can be provided.

1 is an external perspective view of a digital video camera that is an example of an embodiment of an imaging apparatus of the present invention. It is a disassembled perspective view of the digital video camera shown in FIG. (A) is the figure which looked at the camera main body from the front side, (b) is the side view on the right side seeing from the front side of the camera main body. (A) is a left side view as seen from the front side of the camera body, and (b) is a view as seen from the upper side of the camera body when the left side surface part is in contact with the wall as seen from the front side of the camera body. . It is a perspective view which shows the state which removed the intake cover and the exhaust cover from the intake port and exhaust port of the camera main body, respectively. It is a disassembled perspective view of a camera main body. It is the perspective view seen from the back side of the front cover unit. (A) is the perspective view seen from the back surface side of the right cover unit, (b) is the perspective view of a back cover unit. (A) is the perspective view seen from the surface side of the left cover unit, (b) is the perspective view which looked at the left cover unit shown to (a) from the back surface side. (A) is the perspective view seen from the back side of the card board unit, (b) is the perspective view seen from the bottom face side of the card board unit. (A) is the perspective view seen from the back side of the camera main body of the main unit, (b) is the perspective view seen from the front side of the camera main body of the main unit. (A) is the perspective view seen from the attachment surface side to the fan duct unit of a main board | substrate, (b) is the perspective view seen from the back surface side of the main board | substrate shown to (a). (A) is the perspective view seen from the attachment surface side to the fan duct unit of a sub board | substrate, (b) is the perspective view seen from the back surface side of the sub board | substrate shown to (a). (A) is a perspective view of a network board, (b) is a perspective view of a video compression circuit board. It is a perspective view of a power supply board. (A) is the perspective view seen from the back side of the camera main body of a fan duct unit, (b) is the perspective view seen from the front side of the camera main body of a fan duct unit. FIG. 17A is a side view of the fan duct unit viewed from the direction of arrow D in FIG. 16B, and FIG. 17B is a top view of the fan duct unit shown in FIG. (A) is the perspective view of a fan, (b) is the perspective view which looked at the fan shown to (a) from the back side. It is a perspective view of a fan rubber. (A) is the perspective view which looked at the state which built the fan into fan rubber from the suction side of a fan, and (b) is the perspective view which looked at the state where the fan was built in fan rubber from the discharge side of the fan. (A) The perspective view which looked at the right duct from the back side of the camera main body, (b) is the figure which looked at the right duct shown to (a) from the arrow E direction. (A) is the perspective view of a left duct, (b) is the figure which looked at the left duct shown to (a) from the arrow F direction. (A) is the perspective view of the left duct rear, (b) is the perspective view which looked at the left duct rear shown to (a) from the arrow G direction. It is a disassembled perspective view of a fan duct unit. It is the sectional view on the AA line of Fig.17 (a). It is the BB sectional view taken on the line of Fig.17 (a).

  Hereinafter, an example of an embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is an external perspective view of a digital video camera which is an example of an embodiment of an imaging apparatus of the present invention. FIG. 2 is an exploded perspective view of the digital video camera shown in FIG.

  As shown in FIGS. 1 and 2, the digital video camera of this embodiment is provided with an interchangeable lens barrel 101 detachably provided on the front side (subject side) of the camera body 100, and the bottom surface of the camera body. The shoulder unit 103 is detachably provided. A handle portion 102 and a viewfinder portion 104 are detachably provided on the upper surface portion of the camera body 100. The viewfinder unit 104 is disposed on the front side of the handle unit 102 and above the lens barrel 101. The lens barrel 101 and the viewfinder unit 104 are electrically connected to the camera body 100 via a contact portion while being mounted on the camera body 100, respectively. The camera body 100 corresponds to an example of the apparatus body of the present invention.

  3A is a view of the camera body 100 viewed from the front side, and FIG. 3B is a right side view of the camera body 100 viewed from the front side. 4A is a left side view as seen from the front side of the camera body 100, and FIG. 4B is a view of the camera body 100 when the left side face portion is in contact with the wall 215 as seen from the front side of the camera body 100. It is the figure seen from the upper surface side.

  As shown in FIG. 3A, the camera body 100 is provided with an imaging button 201, an imaging element 200, and the like. The imaging device 200 is configured by a CMOS sensor, a CCD sensor, or the like, photoelectrically converts a subject image formed through the photographing optical system of the lens barrel 101, and outputs the subject image to an image processing unit (not shown). As illustrated in FIG. 3B, a power button 202, an operation button group 203, an operation dial 204, and a display unit 205 are provided on the right side surface as viewed from the front side of the camera body 100.

  Further, as shown in FIG. 4A, a card lid 210, an external input / output terminal portion are provided on a left side surface portion which is one side surface portion in the width direction of the camera body 100 when viewed from the front side of the camera body 100. 220, a photographing button 206, an intake port 230, and an exhaust port 240 are provided. The card lid 210 covers an opening of a card slot (not shown) so that it can be opened and closed. The intake port 230 is disposed on the front side (right side in the figure) of the camera body 100, and the exhaust port 240 is disposed on the back side of the camera body 100. Then, the camera body 100 sucks external air from the intake port 230 by driving the fan 300 described later, and discharges the airflow generated by driving the fan 300 from the exhaust port 240.

  In the digital video camera of this embodiment, the photographer takes a picture with the shoulder unit 103 placed on the right shoulder. Therefore, the photographer's face is adjacent to the right side when viewed from the front side of the camera body 100, but the exhaust port 240 is located at the left side when viewed from the front side of the camera body 100. The exhaust air from the air does not hit the photographer's face and does not cause discomfort.

  Further, as shown in FIG. 4B, since the card cover 210 and the external input / output terminal portion 220 protrude outside the camera body 100 with respect to the air intake port 230 and the air exhaust port 240, the air intake port is formed by the wall 215. 230 and the exhaust port 240 are not blocked. Therefore, the air flow of the intake / exhaust air indicated by the arrows in FIG. 4B is not obstructed, the heat can be efficiently radiated, and the camera body 100 can be sufficiently cooled.

  FIG. 5 is a perspective view showing a state where the intake cover 231 and the exhaust cover 241 are removed from the intake port 230 and the exhaust port 240 of the camera body 100, respectively. As shown in FIG. 5, the intake cover 231 and the exhaust cover 241 are fixed to the camera body 100 by screws 234, respectively.

  An intake filter 232 is incorporated inside the intake cover 231. The intake filter 232 is made of urethane foam having a complete open cell structure, and can prevent dust and the like sucked together with air from entering the inside during intake. The intake filter 232 is a relatively thick filter, and can obtain a high dust collection rate with respect to the air sucked from the intake cover 231.

  In addition, an exhaust filter 242 made of the same material as the intake filter 232 is incorporated inside the exhaust cover 241, and dust and the like are prevented from entering the interior from the exhaust cover 241, similarly to the intake port 230. be able to.

  FIG. 6 is an exploded perspective view of the camera body 100. As shown in FIG. 6, the camera body 100 forms an exterior with a front cover unit 251, a right cover unit 252, a left cover unit 253, a back cover unit 254, a top cover unit 255, and a bottom cover unit 256. The main unit 250 is covered with these cover units 251 to 256. The top cover unit 255 and the bottom cover unit 256 are provided with a plurality of screw holes 257, and external devices, accessories, and the like can be attached to the camera body 100.

  FIG. 7 is a perspective view of the front cover unit 251 viewed from the back side. As shown in FIG. 7, the front cover unit 251 is provided with a sensor substrate 258 on which the image sensor 200 is mounted and a mount portion 208 (see FIG. 3A) for fixing the lens barrel 101. .

  As described above, since the imaging element 200 is configured with a CMOS sensor or a CCD sensor, there is a problem that noise and the like increase due to heat generated by the element itself, and image quality deteriorates. Further, since the circuit on the sensor substrate 258 also generates heat and supplies heat to the image sensor 200, it is necessary to dissipate the heat around the image sensor 200 and the sensor substrate 258. For this reason, the sensor heat dissipation plate 259 is fixed to the sensor substrate 258 with screws or the like for heat dissipation.

  FIG. 8A is a perspective view of the right cover unit 252 as viewed from the back side, and FIG. 8B is a perspective view of the back cover unit 254. The right cover unit 252 is provided with a display control board 260 as shown in FIG. On the display control board 260, shooting settings and images during shooting are displayed on the display unit 205, and the settings of the camera body 100 are set according to the input contents of switches such as the power button 202, operation button group 203, and operation dial 204. A control IC (not shown) for controlling is mounted. The display control board 260 is electrically connected to a later-described main board 400 (see FIG. 11A) included in the main unit 250.

  Further, as shown in FIG. 8B, the back cover unit 254 is provided with a battery terminal 225, and the camera body 100 can be operated by supplying power from a battery (not shown).

  FIG. 9A is a perspective view of the left cover unit 253 viewed from the front surface side, and FIG. 9B is a perspective view of the left cover unit 253 shown in FIG. 9A viewed from the back surface side.

  As shown in FIG. 9A, the left cover unit 253 is provided with an audio output terminal 221 and an audio input terminal 222 as the external input / output terminal unit 220. The audio output terminal 221 and the audio input terminal 222 are respectively connected to a signal control board 262 and a sub board 401 described later included in the main unit 250. When a cable or the like is connected to the audio output terminal 221 or the audio input terminal 222, the cable or the like can be pulled out obliquely to the rear side with respect to the camera body 100, so that the cable or the like does not get in the way during shooting. Yes. Since it is necessary to arrange a substrate or the like inside the external input / output terminal portion 220, a large space inside the left cover unit 253 is required.

  Further, the left cover unit 253 is provided with a card lid 210 that covers an opening of a card slot (not shown) of a card board unit 261 (described later) on which a recording medium for recording video is detachably mounted. ing. In the card slot of the card board unit 261, a recording medium such as a memory card can be detachably mounted from the lateral direction of the camera body 100, thereby making it easy to insert and remove the recording medium.

  As shown in FIG. 9B, the left cover unit 253 is provided with a signal control board 262, a card board unit 261, and the like. The signal control board 262 and the card board unit 261 are connected to a main board 400 and a sub board 401, which will be described later, by wire harnesses or the like, and perform video and audio signal communication.

  FIG. 10A is a perspective view seen from the back side of the card board unit 261, and FIG. 10B is a perspective view seen from the bottom side of the card board unit 261.

  As shown in FIG. 10A, the card board unit 261 is electrically connected to a video compression circuit board 403 described later. The card substrate unit 261 includes two card substrates 263a and 263b for recording video on a recording medium, and three storage card substrates 264 for storing a setting storage file at the time of shooting by the camera body 100. Two substrates are provided.

  When recording a video with a high resolution and a high frame rate, it is necessary to cool the recording medium because the IC in the recording medium generates heat. For this reason, a heat radiating rubber (not shown) is provided on the card substrates 263a and 263b to radiate heat to the heat radiating plate 268. The three substrates 263a, 263b, 264 and the heat sink 268 are fixed with screws or the like while being positioned on the metal card substrate base 265.

  Further, as shown in FIG. 10B, the card board base 265 is provided with a card cooling fan 266, and heat is radiated by applying exhaust air from the card cooling fan 266 to the card board base 265 and the heat radiating plate 268. It is carried out. Further, a card heat radiation rubber 267 that dissipates heat to the bottom cover unit 256 is attached to the heat radiation plate 268.

  11A is a perspective view of the main unit 250 as seen from the back side of the camera body 100, and FIG. 11B is a perspective view of the main unit 250 as seen from the front side of the camera body 100.

  As shown in FIG. 11, the main unit 250 includes a fan duct unit 301, a main board 400, a sub board 401, a network board 402, a video compression circuit board 403, a power board 404, a main board heat sink 410, and a sub board heat sink 411. Have The main board heat sink 410 and the sub board heat sink 411 are formed of a sheet metal member such as copper or aluminum having excellent thermal conductivity, and perform heat dissipation of the heat generating components mounted on the main board 400 and the sub board 401, respectively. Yes.

  In the camera body 100, the power consumption increases in the order of the main board 400, the sub board 401, the video compression circuit board 403, and the power board 404. By fixing the plurality of substrates 400 to 404 accompanied with these heat generations to the fan duct unit 301 and transferring the heat, it is possible to cool the plurality of substrates 400 to 404 at a time. Since the main board 400, the sub board 401, the network board 402, and the video compression circuit board 403 are required to communicate at high speed, a thin coaxial wire or the like is used for connection between the boards.

  Next, the main board 400, sub board 401, network board 402, video compression circuit board 403, and power supply board 404 will be described with reference to FIGS.

  12A is a perspective view of the main board 400 viewed from the side of the mounting surface to the fan duct unit 301, and FIG. 12B is a perspective view of the main board 400 viewed from the back side of the main board 400 shown in FIG. is there.

  As shown in FIG. 12, the main substrate 400 is electrically connected to all electronic devices, and therefore, a large number of ICs are mounted, and the main substrate 400 has the largest area in the camera body 100. On the side of the main substrate 400 shown in FIG. 12A, a front-end IC 600 that processes signals from the sensor substrate 258, a video processing IC 602 that performs color adjustment processing on the video, and these ICs 600 and 602 are used. A memory 603 to be used is mounted. The front-end IC 600, the video processing IC 602, and the memory 603 are mounted on the fan duct unit 301 side because they consume a large amount of power and generate a large amount of heat, and heat generated using heat radiation rubber (not shown) Heat is transferred to the duct unit 301.

  A circuit component 604 for supplying power to the front end IC 600 and the video processing IC 602 is mounted on the side of the main board 400 shown in FIG. The heat generated in the circuit component 604 is transferred to the main board heat radiating plate 410 (see FIG. 11A)) and radiated.

  FIG. 13A is a perspective view of the sub-board 401 viewed from the side where the fan duct unit 301 is attached, and FIG. 13B is a perspective view of the sub-board 401 shown in FIG. is there.

  On the side of the sub-board 401 shown in FIG. 13A, a back-end IC 611 and a format conversion IC 612 that receive video data from the video processing IC 602 of the main board 400 and convert the video format optimal for each external input / output. Etc. are implemented. A back-end IC 611 and a format conversion IC 612 are also mounted on the fan duct unit 301 side of the sub-board 401, and heat generated in each IC 611, 612 is transferred to the fan duct unit 301 using heat radiation rubber (not shown). .

  A circuit component 613 for supplying power to the back-end IC 611 and the format conversion IC 612 is mounted on the side of the sub-substrate 401 shown in FIG. 13B. The heat of the circuit component 613 is sub-substrate heat sink 411. The heat is transferred to the heat (see FIG. 11B).

  14A is a perspective view of the network board 402, and FIG. 14B is a perspective view of the video compression circuit board 403.

  As shown in FIG. 14A, a communication IC 621 for controlling wireless communication such as WIFI is mounted on the network board 402, and images taken in the camera body 100 can be transmitted to an external device. . As shown in FIG. 14B, the video compression circuit board 403 receives video data from the video processing IC 602 of the main board 400 and writes video on the recording medium at a high resolution and a high frame rate. A compression IC 631 is mounted.

  FIG. 15 is a perspective view of the power supply board 404. As shown in FIG. 15, the power supply board 404 supplies power to the main board 400, the sub board 401, the network board 402, the video compression circuit board 403, and the electric devices in the camera body 100. Since the power consumption of the entire camera body 100 is large, components such as a relatively large capacitor 641 and a coil 642 are mounted on the power supply board 404. The power supply board 404 is connected to the main board 400 by a BtoB connector 643, and supplies power to a large number of electrical devices by using many pins of the BtoB connector 643.

  16A is a perspective view of the fan duct unit 301 viewed from the back side of the camera body 100, and FIG. 16B is a perspective view of the fan duct unit 301 viewed from the front side of the camera body 100. FIG. 17A is a side view of the fan duct unit 301 viewed from the direction of arrow D in FIG. 16B, and FIG. 17B is a top view of the fan duct unit 301 shown in FIG.

  As shown in FIG. 16, a right duct 302, a left duct 303, and a left duct rear 304 are fixed to the fan duct unit 301 with screws 305. Inside the fan duct unit 301, as shown in FIGS. 16B and 17A, two fans 300, which are small axial fans incorporated in the fan rubber 306, are arranged in the vertical direction in the figure. Is provided. By adopting a small axial fan as the fan 300, the fan duct unit 301 can be reduced in size, and the camera body 100 is reduced in size. Further, by incorporating the fan 300 into the fan rubber 306, vibration generated when the fan 300 rotates is reduced.

  In FIG. 17B, the fan duct unit 301 can be roughly divided into an intake portion 325, a cooling portion 326, and an exhaust portion 327, which are indicated by broken lines. The air intake unit 325 communicates with an air intake port 230 provided in the left cover unit 253 of the camera body 100, and sends air from the outside of the camera body 100 to the cooling unit 326.

  In the cooling unit 326, heat is exchanged with air by a right duct fin 331 and a left duct fin 341 for cooling described later. Thus, by cooling the fan duct unit 301, the IC mounted on the main board 400, the sub board 401, and the like can be cooled. The exhaust unit 327 communicates with an exhaust port 240 provided in the left cover unit 253 of the camera body 100, and exhausts air heated by heat exchange.

  Here, the cooling unit 326 extends in the optical axis direction along the exterior inner surface of the right cover unit 252 that forms the other side surface in the width direction of the camera body 100 when viewed from the front side of the camera body 100. . In addition, the intake portion 325 is connected to the end portion of the cooling portion 326 on the front side of the camera body 100 at a substantially right angle, and the exhaust portion 327 is the end portion of the cooling portion 326 on the back side of the camera body 100. Are connected at an obtuse angle. For this reason, the fan duct unit 301 is substantially U-shaped.

  In FIG. 17B, Wd indicates the width dimension of the right duct 302 and the left duct 303, and Wf indicates the width dimension of the fan 300. In the fan duct unit 301 of the present embodiment, the relationship of Wd <Wf is possible by arranging the fan 300 in the vicinity of the connection portion between the cooling unit 326 and the exhaust unit 327. As a result, the fan duct unit 301 can be thinned, and thus the camera body 100 can be thinned.

  Further, by making the fan duct unit 301 substantially U-shaped, the main board 400 having a relatively large area can be disposed outside the cooling unit 326 (upper side in FIG. 17B). The sub-board 401 having a relatively small area can be disposed inside the. In addition, the right duct fin 331 (see FIG. 21B) of the right duct 302 outside the cooling unit 326 can be elongated in the direction in which the wind flows, and the main board 400 can be effectively cooled. .

  Furthermore, by making the fan duct unit 301 substantially U-shaped, a space 307 can be provided in a portion inside the fan duct unit 301 (lower side in FIG. 17B). The card substrate unit 261 and the external input / output terminal unit 220 have a large depth dimension in the width direction of the camera body 100 and require a large space in the width direction of the camera body 100. In the present embodiment, the card substrate unit 261 is disposed in a substantially U-shaped inner portion of the fan duct unit 301, that is, in a space 307 surrounded by the intake portion 325, the cooling portion 326, and the exhaust portion 327. 100 can be reduced in the width direction. Thereby, the camera body 100 can be downsized. The card board unit 261 corresponds to an example of the mounting portion of the present invention.

  As shown in FIG. 17B, the fan duct unit 301 is formed in a substantially U shape, so that the intake port 230 and the exhaust port 240 can be arranged in the left cover unit 253. The right duct 302, the left duct 303, and the left duct rear 304 are formed of a metal material such as aluminum or magnesium, and the fan rubber 306 is formed of an elastic material such as silicon.

  Next, the fan 300 will be described with reference to FIG. 18A is a perspective view of the fan 300, and FIG. 18B is a perspective view of the fan 300 shown in FIG. 18A viewed from the back side.

  As shown in FIG. 18, the fan 300 has an exterior formed by a resin frame 310, and has a fan wire 312 for electrically connecting to the main board 400 and a fan board (not shown). A motor (not shown) that is electrically connected via a fan substrate is held inside the fan 300, and the blade 313 is rotated by the motor to generate a pressure difference and send air. In addition, as a means for detecting the rotation of the blade 313, the blade 313 is provided with a magnet (not shown), and the fan substrate is provided with a hall element (not shown). The number of rotations of the blade 313 is detected and the blade 313 is detected. Is provided with feedback control so that the rotation speed becomes a predetermined rotational speed.

  Thus, the fan 300 has a function of sucking air from the suction side and discharging it from the discharge side, and can control the rotation speed. In general, an axial fan can obtain a sufficiently large air volume by rotating the blades 313 at a low speed. By rotating the blade 313 at a low speed, noise noise such as wind noise and motor noise can be suppressed, which is optimal for a digital video camera.

  Next, the fan rubber 306 will be described with reference to FIGS. 19 and 20. FIG. 19 is a perspective view of the fan rubber 306. As shown in FIG. 19, the fan rubber 306 is provided with an outer rib 321, an inner rib 322, and a notch 323 formed of a rubber member such as silicon rubber. The inner ribs 322 are provided at the four corners inside the fan rubber 306.

  20A is a perspective view of the state in which the fan 300 is incorporated in the fan rubber 306 as viewed from the suction side of the fan 300, and FIG. 20B is a state in which the fan 300 is incorporated in the fan rubber 306 in the discharge side of the fan 300. It is the perspective view seen from.

  As shown in FIG. 20, the fan rubber 306 holds the fan 300 by being sandwiched by the inner ribs 322 so as not to cover the suction side and discharge side openings of the fan 300. At this time, as shown in FIG. 20B, the fan wire 312 of the fan 300 is pulled out from the notch 323, thereby assembling the outer shape of the fan 300 and the inner diameter of the fan rubber 306 without any gaps. Can do.

  Next, the right duct 302 will be described with reference to FIG. 21A is a perspective view of the right duct 302 viewed from the back side of the camera body 100, and FIG. 21B is a view of the right duct 302 shown in FIG.

  As shown in FIG. 21A, the right duct 302 includes a main board 400, a main board fixing part 332 for fixing the power board 404 with screws or the like, and a power board fixing part 333. Further, the right duct 302 is provided with right duct convex portions 334 at positions corresponding to the front end IC 600, the video processing IC 602, and the memory 603 mounted on the main board 400, respectively. The size of the right duct convex portion 334 is substantially the same as that of a heat radiation rubber (not shown) attached to the right duct convex portion 334. As a result, the heat generated by the front end IC 600, the video processing IC 602, and the memory 603 can be transmitted to the right duct convex portion 334 via the heat radiation rubber.

  As shown in FIG. 21B, the right duct 302 and the fan rubber 306 incorporating the fan 300 are held between the right duct upper wall 336 and the right duct lower wall 337 inside the right duct 302. A fan rubber holding rib 335 is provided. A plurality of right duct fins 331 are arranged in parallel in the height direction of the camera body 100 at a predetermined interval in order to enlarge the heat radiation area. Further, right duct ribs 338 are provided at the left and right end positions of the right duct fin 331 of the right duct upper wall 336 and the right duct lower wall 337, respectively. The installation purpose of the right duct rib 338 will be described later.

  Next, the left duct 303 will be described with reference to FIG. 22A is a perspective view of the left duct 303, and FIG. 22B is a view of the left duct 303 shown in FIG.

  As shown in FIG. 22A, the left duct 303 is provided with a sub board fixing portion 342 for fixing the sub board 401 and the sub board heat sink 411 with screws or the like. Further, the left duct 303 is provided with a left duct convex portion 344 at a position corresponding to the back-end IC 611, the format conversion IC 612 and the like mounted on the sub-board 401. The size of the left duct convex portion 344 is substantially the same as the heat radiating rubber attached to the left duct convex portion 344. As a result, the heat generated by the back-end IC 611 and the format conversion IC 612 can be transmitted to the left duct convex portion 344 via the heat radiation rubber. Further, the left duct 303 is provided with a left duct fixing portion 347 for fixing the left duct rear 304.

  As shown in FIG. 22B, a plurality of left duct fins 341 arranged in parallel in the height direction of the camera body 100 at a predetermined interval in order to increase the heat radiation area are provided inside the left duct 303. A separation wall 343 is provided at a substantially central portion inside the left duct 303. When the right duct 302 and the left duct 303 are combined, the separation wall 343 separates the internal space into two upper and lower parts. By incorporating the right duct upper wall 336 and the right duct lower wall 337 of the right duct 302 into the left duct upper wall 345 and the left duct lower wall 346 of the left duct 303, the gap of the fan duct unit 301 is eliminated, and dust, etc. Rain water can be prevented from entering.

  Next, the left duct rear 304 will be described with reference to FIG. 23A is a perspective view of the left duct rear 304, and FIG. 23B is a perspective view of the left duct rear 304 shown in FIG.

  As shown in FIG. 23A, the left duct rear 304 is provided with a board fixing portion 353 for fixing the video compression circuit board 403 with screws or the like. Further, the left duct rear 304 is provided with a heat radiation flat surface portion 355 at a position corresponding to the video compression IC 631 mounted on the video compression circuit board 403. The heat generated by the video compression IC 631 can be transmitted to the heat radiation flat portion 355 via a heat radiation rubber (not shown).

  As shown in FIG. 23 (b), inside the left duct rear 304, a plurality of left duct rear fins 351 for expanding the heat radiation area, and two fan mounting portions for holding the fan rubber 306 in which the fan 300 is mounted. 352 is provided. In addition, a separation wall 354 is provided at a substantially central portion inside the left duct rear 304. The separation wall 354 separates the internal space into two when the left duct rear 304 is incorporated in the right duct 302. As a result, the exhaust air from one of the two fans 300 is prevented from being sucked into the other fan 300, and the air heated by the right duct fin 331 and the left duct fin 341 is removed from the outside of the camera body 100. Can be reliably exhausted.

  Next, the fan duct unit 301 will be described with reference to FIG. FIG. 24 is an exploded perspective view of the fan duct unit 301. As shown in FIG. 24, the fan rubber 306 is incorporated in the fan incorporating portion 352 of the left duct rear 304 with the outer rib 321 in contact therewith, whereby the fan 300 is held. In this way, the vibration generated by the rotation of the blade 313 of the fan 300 is prevented from affecting the camera body 100. Further, since the outer rib 321 is also in contact with the right duct 302, there is also an effect of preventing the backflow of air in the fan duct unit 301.

  FIG. 25 is a cross-sectional view taken along line AA in FIG. FIG. 26 is a cross-sectional view taken along line BB in FIG. FIG. 26 is a cross-sectional view at the position of the right duct rib 338 of the right duct 302 shown in FIG.

  As shown in FIG. 25, the fan duct unit 301 includes a left duct fin 341 of the left duct 303 between right duct fins 331 adjacent to each other in the height direction of the camera body 100 of the right duct 302 (vertical direction in the figure). Has been inserted. That is, the plurality of right duct fins 331 and the plurality of left duct fins 341 are alternately arranged in the height direction of the camera body 100. Thus, the air sucked by the fan 300 can cool the right duct 302 and the left duct 303 by passing through the gap between the right duct fin 331 and the left duct fin 341.

  A duct upper space 361 is formed between the right duct upper wall 336 of the right duct 302 and the uppermost left duct fin 341 of the left duct 303. A duct lower space 362 is formed between the right duct lower wall 337 of the right duct 302 and the lowermost left duct fin 341 of the left duct 303. The duct upper space 361 and the duct lower space 362 are both wider than the space between the right duct fin 331 and the left duct fin 341.

  In this embodiment, as shown in FIG. 26, the right duct rib 338 described above is provided in the right duct 302, so that the volume of the duct upper space 361 and the duct lower space 362 is partially reduced. This makes it difficult for the air flowing through the duct upper space 361 and the duct lower space 362 to flow, and increases the flow velocity of the air at the center of the fan duct unit 301 to enhance the heat dissipation effect by the fins 331 and 341.

  As described above, in this embodiment, the card substrate unit 261 that requires a large space in the width direction of the camera body 100 is arranged in the space 307 in the substantially U-shaped inner portion of the fan duct unit 301. Thereby, the camera body 100 can be thinned in the width direction, and the camera body 100 can be downsized.

  In the present embodiment, the main board 400 having a relatively large area is disposed outside the cooling section 326 of the substantially U-shaped fan duct unit 301, and the sub-board having a relatively small area is disposed inside the cooling section 326. 401 can be arranged. Thereby, the heat generated by the heating elements mounted on the substrates 400 and 401 can be cooled by exchanging heat with the cooling unit 326, and the heat radiation efficiency can be improved.

  Furthermore, in the present embodiment, the card lid 210 and the external input / output terminal portion 220 of the card board unit 261 are arranged so as to protrude outside the camera body 100 with respect to the air inlet 230 and the air outlet 240. For this reason, even when the side surface of the camera body 100 approaches the wall at the time of photographing, the air inlet 230 and the exhaust outlet 240 are not blocked by the wall 215, and an air intake / exhaust space can be secured. Accordingly, the air flow of the intake and exhaust air indicated by the arrows in FIG. 4B is not obstructed, and heat can be radiated efficiently, and the camera body 100 can be sufficiently cooled.

  The configuration of the present invention is not limited to that exemplified in the above embodiment, and the material, shape, dimensions, form, number, arrangement location, and the like can be changed as appropriate without departing from the scope of the present invention. It is.

100 Camera body 230 Intake port 240 Exhaust port 300 Fan 301 Fan duct unit 325 Intake unit 326 Cooling unit 327 Exhaust unit 400 Main board 401 Sub board

Claims (5)

With fans,
An air inlet that is disposed on one side surface in the width direction of the apparatus main body and sucks external air by driving the fan;
An exhaust port that is disposed on one side surface in the width direction of the apparatus body, generates an airflow of air sucked from the intake port by driving the fan, and discharges the airflow;
A duct provided inside the apparatus main body and having an intake portion communicating with the intake port, an exhaust portion communicating with the exhaust port, and a cooling portion to which the intake portion and the exhaust portion are respectively connected. ,
The intake part and the exhaust part are each connected to the cooling part in a direction intersecting the cooling part,
In a space inside the duct surrounded by the cooling unit, the intake unit, and the exhaust unit, at least one member of a mounting unit and an input / output terminal unit on which a recording medium is detachably mounted is disposed. ,
The image pickup apparatus according to claim 1, wherein the member is disposed so as to protrude outward in the width direction of the apparatus main body from the intake port and the exhaust port.   The imaging apparatus according to claim 1, wherein the air intake portion of the duct is connected to the cooling portion so as to intersect the cooling portion at a substantially right angle.   The imaging apparatus according to claim 1, wherein the exhaust part of the duct is connected to the cooling part so as to intersect an obtuse angle with respect to the cooling part.   The imaging device according to claim 3, wherein the fan is provided at a connection portion between the exhaust portion and the cooling portion of the duct.   5. The air intake port according to claim 1, wherein the air intake port is disposed on a front side which is a subject side of the apparatus main body, and the exhaust port is disposed on a back side of the apparatus main body. The imaging device described in 1.