JP2018191022A - Electric device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure which can efficiently cool a control element which generates heat when data is transferred in a communication jack.SOLUTION: An electric device incorporates a cooling fan into a body part and has a jack lid which covers a communication jack part provided at the body part. The electric device includes: a suction port which suctions outer air into an external case of the body part by driving of the cooling fan; and an exhaust port which is provided at the exterior case and exhausts airflow generated by the driving of the cooling fan. One of a suction port and an exhaust port which are different from the suction port and the exhaust port is formed at an exposed part exposed when the jack lid is opened.SELECTED DRAWING: Figure 7

Description

  The present invention relates to an electronic device having a forced air cooling structure.

  In recent years, there has been a problem of thermal runaway caused by exceeding the guaranteed temperature of internal electric elements as the electronic devices with smaller size and higher functionality are demanded by the market. Among electronic devices, in particular, in imaging devices, power consumption has increased when shooting and external output are performed due to an increase in the number of shooting pixels and an increase in shooting frame rate. Therefore, an imaging device that applies a forced air cooling structure using a fan has been proposed (Patent Document 1).

JP 2006-295855 A

  In the preceding example, the housing provided with the forced air cooling structure is provided with an intake port for sucking air by a fan and an exhaust port for discharging heat warmed by heat exchange inside the imaging device. However, there is only one intake and one exhaust. Since it is only possible to cool a plurality of substrates uniformly, it is difficult to efficiently cool a control element that generates heat when data is transferred by a communication jack.

  1) In order to achieve the above object, an electronic apparatus according to claim 1 is an electronic apparatus having a built-in cooling fan in a main body and a jack lid that covers a communication jack provided in the main body. A suction port that sucks external air into the exterior case of the main body by driving the cooling fan; and an exhaust port that is provided in the exterior case and discharges airflow generated by driving the cooling fan. In the exposed portion exposed when the jack lid is opened, either an intake port or an exhaust port different from the intake port and the exhaust port is formed.

  2) The electronic device according to claim 2 is the electronic device according to claim 1, wherein the communication jack is a jack for communicating a video signal.

  3) The imaging device according to claim 3 is the imaging device according to claim 1 or 2, wherein the input / output signal control element of the communication jack is mounted in the vicinity of the jack, and the jack lid is opened. An airflow exhausted to the exhaust port exposed by the operation or an airflow sucked from the intake port exposed by the opening operation of the jack lid exhausts the input / output signal control element.

  According to the imaging device according to the present invention, the main body can be reduced in size by disposing either the intake port or the exhaust port inside the jack cover that is opened to use a jack that communicates signals. In addition, there is an effect that the control element that generates heat when data is transferred at high speed by the jack can be efficiently cooled.

The block diagram which shows the structure of the imaging device main body 100 Front left upper perspective view of imaging device main body 100 Rear right upper perspective view of the imaging device main body 100 Rear left upper perspective view of imaging device main body 100 Left side perspective view of the imaging device main body 100 with the jack lid 160 removed. The figure which shows the flow of the wind inside the imaging device main body 100 of the state which has closed the jack lid | cover 160. FIG. The figure which shows the flow of the wind inside the imaging device main body 100 of the state which has opened the jack lid | cover 160. FIG.

  Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram showing the configuration of the imaging device, and FIG. 2 is a front upper right perspective view of the imaging device main body 100.

  As shown in FIG. 1, the imaging apparatus main body 100 includes an optical lens group including an optical control system such as focus and zoom, a lens unit 101 including a diaphragm, an imaging unit 102 including an imaging element such as a CCD, and a camera signal processing unit 103. , Compression / decompression processing unit 104, display unit 105, recording / playback processing unit 106, card control unit 107, microphone 109, audio signal processing unit 110, memory 111, memory control unit 112, CPU 113, operation unit 114, output signal processing unit 115 , A digital I / F 116, a power supply control unit 117, a fan control unit 124, and a fan 300. The functional blocks are connected to each other via a data bus 118 so that data communication is possible.

  In such an imaging apparatus main body 100, the memory 111 has a program storage area and a data work area, and is used by time sharing in each functional block via the data bus 118, and is controlled and controlled by the memory control unit 112. It is managed.

  The CPU 113 is a central processing circuit that performs overall control of the entire imaging apparatus main body 100 by executing a predetermined program. The operation unit 114 has a function of instructing the CPU 113 to perform an operation based on a key operation from the user. The zoom knob 114 a and the moving image shooting button 114 b are disposed on the rotary grip portion 130 that can rotate with respect to the imaging device main body 100, and form a part of the operation portion 114. The zoom knob 114a can perform a zoom operation to change the angle of view of the lens to the wide side or the tele side, and the moving image shooting button 114b can be started / stopped by moving the image.

  The digital I / F 116 is an HDMI jack 161 (described later) that transmits and receives a signal in accordance with a standard such as HDMI (High-Definition Multimedia Interface) (registered trademark).

  The memory card 119 is a detachable flash memory such as an SD card or a CF (Compact Flash) card, and records shooting data and audio data.

  The power supply control unit 117 includes a battery detection circuit, a DC-DC converter, a switch circuit that switches a block to be energized, and the like, and detects whether or not a battery is installed, the type of battery, and the remaining battery level.

  Next, a shooting operation, a recording operation, and a reproduction operation of the imaging device according to the first embodiment of the present invention will be described.

  For example, when a photographing operation and a recording operation are instructed by the operation unit 114, light from the subject becomes an optical signal whose predetermined brightness, angle of view, focus, and the like are controlled by the lens unit 101. Is entered against. The imaging unit 102 converts the input optical signal into an electrical signal and outputs it to the camera signal processing unit 103. The camera signal processing unit 103 converts this electric signal into a digital image signal. The image signal is subjected to signal processing such as color separation, gradation correction, and white balance adjustment, and then output. The audio signal processor 110 outputs the audio signal as audio data by gain-controlling the audio signal input from the microphone 109 to a predetermined level and digitizing it.

  The compression / decompression processing unit 104 compresses and encodes the image data output from the camera signal processing unit 103 and the audio data output from the audio signal processing unit 110 using a predetermined compression encoding method. The display unit 105 includes a liquid crystal display unit 105a disposed at the rear of the imaging apparatus main body 100 shown in FIGS. 2 and 3 to be described later. The compression / decompression processing unit 104 converts the shooting data to be compression-encoded into an image signal. Display as an image. Further, the display unit 105 displays the operation status of the imaging device main body 100 as on-screen display information as necessary.

  The recording / playback processing unit 106 performs error correction coding processing, modulation processing, and the like on the data after compression coding obtained by the compression / decompression processing unit 104, and the card control unit 107 performs memory card 119 as a recording medium. To record.

  On the other hand, when a reproduction operation is instructed by the operation unit 114, the recording / reproduction processing unit 106 detects original digital data from data read from the memory card 119, and performs processing such as error correction and demodulation. Further, a clock synchronized with the reproduced data is generated by a PLL (Phase Locked Loop) circuit.

The compression / decompression processing unit 104 performs decompression processing corresponding to a predetermined compression encoding method on the data output from the recording / playback processing unit 106, and acquires shooting data and audio data before compression encoding. The display unit 105 displays the reproduction data obtained by the compression / decompression processing unit 104.
The output signal processing unit 115 performs signal processing for outputting the video / audio data received via the data bus 118 from the digital I / F 116, and outputs the signal to the external device 121 connected to the digital I / F 116.

  The rotation speed of the fan 300 is controlled by the fan control unit 124 by PWM (pulse width modulation) control, and the CPU 113 and other internal electric elements are forcibly air-cooled.

  Next, an appearance configuration and an operation state of the imaging device main body 100 according to the first embodiment of the invention will be described.

  3 is a rear upper right perspective view of the imaging device main body 100, FIG. 4 is a rear left upper perspective view, and FIG. 5 is a left perspective view with the jack lid 160 removed.

  The exterior surface of the imaging device main body 100 is provided with an intake port 140 on the grip side surface for sucking outside air by driving a fan 300 provided inside the imaging device main body 100. Further, an exhaust port 150 (to be described later) for discharging an airflow generated by driving the fan 300 is provided on the opposite side of the main body.

  As shown in FIGS. 4 and 5, a jack lid 160 that covers the HDMI jack 161 is disposed in the vicinity of the exhaust port 150. When the jack lid 160 is removed, a sub air inlet 142 is provided in the vicinity of the HDMI jack 161. ing.

  6A and 6B are diagrams illustrating the flow of wind inside the imaging apparatus main body 100 in a state in which the jack lid 160 is closed. In particular, FIG. 6A is a diagram viewed from the right rear, and FIG. 6B is a diagram viewed from the top. . 6 shows only the grip side cover 141 that forms the intake port 140, the operation surface side cover 151 that forms the exhaust port 150, the main board 200, and the fan 300 for convenience. As indicated by the arrows in the figure, the cooled air sucked from the air inlet 140 cools the internal electric elements mounted on the main board 200 and is exhausted from the air outlet 150 by the fan 300.

  FIG. 7 is a view showing the flow of wind inside the imaging apparatus main body 100 in a state where the jack lid 160 is opened in order to use the HDMI jack 161, and in particular, (a) is a view seen from the left front. (B) is the figure seen from the upper part. 7 also shows only the grip side cover 141 that forms the intake port 140, the operation surface side cover 151 that forms the exhaust port 150, the main board 200, and the fan 300 for convenience.

  An element 201 including an output signal processing unit 115 is mounted in the immediate vicinity of the HDMI jack 161 on the main board 200, and high-speed data exchange is possible between the element 201 and the HDMI jack 161. When the signal is transmitted to the external device 121 by using it, the power consumption of the element 201 is increased, but it becomes very hot. However, since the jack lid 160 is open, the cold outside air can be sucked also from the sub air intake 142, and the element 201 can be efficiently cooled. The air sucked from the sub air intake port 142 spreads inside the imaging apparatus main body 100 as indicated by an arrow in the drawing, and is exhausted from the exhaust port 150 by the fan 300 together with the air sucked from the air intake port 140.

  As shown in FIGS. 5 and 6, the flow of the air inside the imaging apparatus main body 100 is different between the opened state and the closed state of the jack lid 160, and the element 201 can be efficiently cooled when the jack lid 160 is opened. it can.

  Although the present invention has been described in detail based on preferred embodiments thereof, the present invention is not limited to these specific embodiments, and various forms within the scope of the present invention are also included in the present invention. included. Further, in the present embodiment, the description has been made so that the intake port is in the vicinity of the jack, but the case of being an exhaust port may also be included. A case where the positional relationship between the intake port and the exhaust port of the imaging device main body is different is also included in the present invention. Moreover, you may combine suitably a part of above-mentioned embodiment.

100 imaging device main body, 101 lens unit, 102 imaging unit,
103 camera signal processing unit, 104 compression / decompression processing unit, 105 display unit,
106 recording / playback processing unit, 107 card control unit, 108 grip rotation detection unit,
109 microphone, 110 audio signal processor, 111 memory,
112 memory control unit, 113 CPU, 114 operation unit,
115 output signal processing unit, 116 digital I / F, 117 power supply control unit,
118 data bus, 119 memory card, 121 external device,
124 fan control unit, 130 rotating grip unit, 140 air inlet,
141 grip side cover, 142 sub-intake port, 150 exhaust port,
151 Operation side cover, 160 jack cover, 161 HDMI jack,
200 main board, 201 elements, 300 fans

Claims (3)

In an electronic apparatus having a jack lid that covers a communication jack portion provided in the main body portion, incorporating a cooling fan in the main body portion,
A suction port for sucking external air into the exterior case of the main body by driving the cooling fan;
An exhaust port that is provided in the outer case and discharges airflow generated by driving the cooling fan;
An electronic apparatus in which an intake port or an exhaust port different from the suction port and the exhaust port is formed in an exposed portion exposed when the jack lid is opened.   The electronic device according to claim 1, wherein the communication jack is a jack for communicating a video signal.   The input / output signal control element of the communication jack is mounted in the vicinity of the jack, and the air flow exhausted to the exhaust port exposed by the opening operation of the jack lid, or the air intake port exposed by the opening operation of the jack lid The electronic apparatus according to claim 1, wherein an air flow that is sucked exhausts heat from the input / output signal control element.