JP2017126924A - Imaging apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an imaging apparatus which reduces discomfort of a user due to high temperature exhaust.SOLUTION: An imaging apparatus includes a suction port for taking in the air from the outside of the body, an exhaust port for discharging the air to the outside of the body, a blower for exhausting from the exhaust port, and a temperature detector for detecting the temperature in the body. A first threshold is set so that the interior of the body is not broken at high temperature, and a second threshold is set so that the exhaust temperature does not cause discomfort. When the blower is stopping (S402 YES), and the temperature detected by the temperature detector is higher than the first threshold (S404 YES), the blower is operated intermittently (S405), and when the blower is operating intermittently, and the temperature detected by the temperature detector is lower than the second threshold (S407 YES), the blower is operated continuously (S408).SELECTED DRAWING: Figure 4

Description

  The present invention relates to an imaging apparatus including a fan.

  In recent years, along with downsizing of an imaging apparatus and increase in power consumption, the imaging apparatus cools the inside of the imaging apparatus using a fan. Further, the imaging device records the sound being recorded. At this time, if the fan is rotating, the sound of the fan enters, and the sound of the fan that is not the recording target is recorded.

  In order to solve this problem, there are countermeasures such as stopping the fan or rotating it at a low speed, and the conventional image pickup device has a mode for stopping the fan, and the control for rotating the fan before the image pickup device main body breaks due to high temperature is provided. It has been proposed (see Patent Document 1).

JP 2011-61546 A

  However, in Patent Document 1 described above, the temperature in the imaging device is high when the fan is stopped. When the rotation of the fan is started in order to cool the image pickup apparatus, the high-temperature air in the image pickup apparatus is exhausted.

  In order to reduce the user's discomfort, it is effective to reduce the displacement of the fan. Therefore, the lowest voltage that can be driven in a voltage-driven fan and the lowest duty that can be driven in a PWM-controlled fan. Exhaust was performed at the value, but there was a request to reduce the air volume.

In order to solve the above-described problem, an imaging apparatus according to claim 1 according to the present invention includes:
The main body includes an intake port for taking in air from the outside of the main body, an exhaust port for discharging air to the outside of the main body, a blower unit for exhausting air from the exhaust port, and a temperature detection unit for detecting the temperature inside the main body. A first threshold value set so that the inside does not break at high temperature and a second threshold value set so that the exhaust temperature does not feel uncomfortable, and when the air blowing unit is stopped, When the temperature detected by the temperature detection unit is higher than the first threshold, the air blowing unit is intermittently operated, and when the air blowing unit is intermittently operated, the temperature detected by the temperature detection unit is higher than the second threshold. It has the ventilation control means which operates the said ventilation part continuously when it is low.
An image pickup apparatus according to a second aspect of the present invention includes:
The imaging apparatus according to claim 1, further comprising a plurality of air blowing units, wherein the plurality of air blowing units do not simultaneously blow air during the intermittent operation.

  According to the imaging apparatus of the present invention, it is possible to reduce the amount of high-temperature exhaust when starting to rotate the fan from the fan stop state, and to reduce discomfort due to the high-temperature exhaust to the user.

It is a block diagram which shows the structural example of the imaging device by this embodiment. It is an external appearance perspective view of the imaging device by this embodiment. It is an internal structure schematic diagram seen from the Z direction of the imaging device according to the present embodiment. It is a flowchart which shows the ventilation control process by the imaging device of this embodiment.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings.

  FIG. 1 is a block diagram illustrating a configuration example of the imaging apparatus main body 100 according to the present embodiment. FIG. 2 is an external perspective view of the imaging apparatus according to the present embodiment. FIG. 3 is a schematic diagram of the internal structure as viewed from the Z direction of the imaging apparatus according to the present embodiment.

  1 to 3, an imaging unit 101 includes an imaging lens 301, a CCD or CMOS element that converts an optical image into an electric signal, and an A / D converter that converts an analog signal into a digital signal. Thus, the subject image is converted into a digital signal and the captured image data is output.

  The voice input unit 110 includes a microphone that converts voice into an electrical signal, and outputs voice data.

  The ROM 103 is an electrically erasable / recordable memory, such as an EEPROM. The ROM 103 stores constants, programs, etc. for the operation of the CPU 102. Here, the program is a program for executing various flowcharts described later in the present embodiment. The CPU 102 controls the entire imaging apparatus main body 100. By executing the program recorded in the ROM 103 described above, each process of the present embodiment to be described later is realized.

  A RAM 104 is a system memory, a work memory, an image memory, and an audio memory, and a RAM or the like is used. In the RAM 104, constants and variables for operation of the CPU 102, programs read from the ROM 103, and the like are expanded.

  The temperature detection unit 105 is disposed in the vicinity of the substrate 303 on which the CPU 102, the ROM 103, and the RAM 104 are disposed. The temperature detection unit 304 that outputs temperature data of the substrate 303 is disposed in the vicinity of the image sensor 301. The image sensor includes a temperature detection unit 302 that outputs temperature data 301. A thermistor or the like is used for each temperature detection unit.

  The display unit 106 displays an image using image data that the CPU 102 transmits to the RAM 104. A liquid crystal panel, an organic EL, or the like is used for the display unit 106.

  The recording unit 107 records image data and audio data that the CPU 102 transmits to the RAM 104. The recording unit 107 is a recording medium such as a memory card for recording image data and audio data, and includes a semiconductor memory, a magnetic disk, a magnetic tape, and the like.

  An operation unit 108 indicates a part related to an operation including a shutter button 201 provided on the imaging apparatus main body 100, a power button 200, a touch panel 202 provided to overlap the display unit 106, and the like. The power button 200 turns on and off the power of the imaging apparatus main body 100. When the shutter button 201 is operated, image data and audio data to be photographed are stored in the recording unit 107.

  The touch panel 202 acts as various function buttons by selecting and operating various icons displayed on the display unit 106 provided in an overlapping manner. Examples of function buttons include a shooting mode switching button, a zoom button, and a menu button. For example, when the zoom button is pressed, the zoom function is started and the angle of view suitable for the shooting scene can be obtained. The user can make various settings intuitively by operating the touch panel 202 in which the buttons displayed on the display unit 106 are overlapped.

  The fan 109 includes an intake port 203 for taking outside air into the imaging apparatus main body 100, an exhaust port 204 for discharging air from the imaging apparatus main body 100 to the outside, and a ventilation path between the intake port 203 and the exhaust port 204. Wind through the duct 305.

  The CPU 102 has a fan control unit that controls the motor by driving the fan 109 by controlling the rotation speed by changing the input voltage value to the motor or the input voltage called PWM control to a rectangular wave. .

  Other configurations used in the imaging device include a power supply unit for driving the imaging device body, a terminal unit for input / output of video / audio signals, a strobe / light unit for illuminating a subject, etc. In order to use a well-known fact, the illustration and detailed description are omitted here.

  FIG. 4 is a flowchart of the first air blowing control process in the present embodiment. Each process in this flowchart is realized by the CPU 102 developing and executing a program stored in the ROM 103 on the RAM 104.

  In FIG. 4, in step S <b> 401, the CPU 102 determines whether there is a command to turn on the power using the power button 200. If the CPU 102 determines that there is no power ON command from the power button 200, the process returns to step S401. If the CPU determines that the power button 200 has issued a command to turn on the power, the process proceeds to step S402.

  In step S402, the CPU 102 determines whether the fan is stopped by the air blowing control unit. If the CPU 102 determines that the fan is not stopped, the process returns to step S402. If the CPU 102 determines that the fan is stopped, the process proceeds to step S403.

  In step S403, the CPU 102 detects the temperature data in the main body by the temperature detection means, writes it in the RAM 104, and proceeds to step S404.

  In step S404, the CPU 102 compares the temperature data in the main body written in the RAM 104 with the first threshold value for reducing the temperature in the main body previously written in the ROM 103 and the magnitude of the data. When the temperature data in the main body written in the RAM 104 is smaller than the first threshold, the CPU 102 returns to step S403. When the temperature data in the main body written in the RAM 104 is larger than the first threshold, the CPU 102 proceeds to step S405.

  In step S405, the CPU 102 causes the fan 109 to intermittently operate using the air blowing control unit, and the process proceeds to step S406.

  In step S406, the CPU 102 detects the temperature data in the main body by the temperature detection means, writes it in the RAM 104, and proceeds to step S407.

  In step S407, the CPU 102 compares the temperature data in the main body written in the RAM 104 with the second threshold value set in advance so that the exhaust temperature written in the ROM 103 does not feel uncomfortable, and the magnitude of the data. . When the temperature data in the main body written in the RAM 104 is larger than the second threshold value, the CPU 102 returns to step S406. When the temperature data in the main body written in the RAM 104 is smaller than the second threshold value, the CPU 102 proceeds to step S408.

  In step S408, the CPU 102 causes the fan 109 to continuously operate the fan 109 using the air blowing control unit, and the process proceeds to step S409.

  In step S409, the CPU 102 determines whether there is an instruction to turn off the power by the power button 200. If the CPU 102 determines that there is no power-off command from the power button 200, the process returns to step S408. If the CPU 102 determines that the power button 200 is instructed to turn off the power, the process proceeds to step S410.

  When a plurality of fans are mounted, the same effect can be obtained with a plurality of fans by performing the intermittent operation without moving the plurality of fans at the same time in the intermittent operation of step S405.

  As described above, according to the embodiment of the present invention, it is possible to reduce the amount of high-temperature exhaust when starting the rotation of the fan from the fan stopped state, and to reduce discomfort caused by the high-temperature exhaust to the user. It becomes.

100 imaging device main body, 101 imaging unit, 102 CPU, 103 ROM,
104 RAM, 105 temperature detection unit, 106 display unit, 107 recording unit,
108 operation unit, 109 fan, 110 voice input unit, 111 battery,
200 power button, 201 shutter button, 202 touch panel, 203 air inlet,
204 exhaust port, 300 photographing lens, 301 image sensor,
302 Image sensor temperature detection unit, 303 substrate, 304 substrate temperature detection unit,
305 Duct, 306 Heat conduction member, Z imaging device vertical direction,
W Direction of external air passing through duct 305

Claims (2)

The main body includes an intake port for taking in air from the outside of the main body, an exhaust port for discharging air to the outside of the main body, a blower unit for exhausting air from the exhaust port, and a temperature detection unit for detecting the temperature inside the main body. A first threshold value set so that the inside does not break at high temperature and a second threshold value set so that the exhaust temperature does not feel uncomfortable, and when the air blowing unit is stopped, When the temperature detected by the temperature detection unit is higher than the first threshold, the air blowing unit is intermittently operated, and when the air blowing unit is intermittently operated, the temperature detected by the temperature detection unit is higher than the second threshold. An image pickup apparatus comprising air blow control means for continuously operating the air blow unit when low. The imaging apparatus according to claim 1, further comprising a plurality of air blowing units, wherein the plurality of air blowing units do not simultaneously blow air during the intermittent operation.