Imaging device, control method, and program

Abstract

To determine a portion to be preferentially cooled depending on a photographing method or by a photographing environment.SOLUTION: An imaging apparatus includes temperature detection means for detecting a temperature inside the imaging apparatus and a temperature outside the imaging apparatus, first cooling means for cooling the outside of the imaging apparatus on the basis of the temperature detected by the temperature detection means, and control means for controlling second cooling means for cooling the inside of the imaging apparatus. The control means controls to drive the first cooling means and the second cooling means when photographing an image in a first mode and controls to drive at least the second cooling means when photographing an image in a second mode.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a technique for controlling a cooling device that cools the interior and exterior of an imaging device. [Background technology]

[0002] Patent Document 1 describes a method for controlling a single fan and a wind direction plate so that when there are multiple heat sources inside an imaging device, air is blown in order from the heat source with the highest rate of temperature rise in shooting mode. Patent Document 2 describes a method for displaying temperature information each time the internal temperature of the device exceeds a threshold temperature, and for notifying the user that the fan will operate when the temperature exceeds the threshold for starting fan operation. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2019-193174 [Patent Document 2] Japanese Patent Application Laid-Open No. 2014-042172 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in the method described in Patent Document 1, a single fan cools multiple heat sources in descending order of temperature rise rate, so some areas may not be cooled depending on the imaging method or imaging environment.

[0005] Therefore, an object of the present invention is to make it possible to determine a region to be cooled with priority in accordance with the imaging method or imaging environment. [Means for solving the problem]

[0006] In order to solve the above problems and achieve the object, an imaging device of the present invention includes a temperature detection means for detecting an internal temperature of the imaging device and an external temperature of the imaging device, a control means for controlling a first cooling means for cooling the external part of the imaging device and a second cooling means for cooling the internal part of the imaging device based on the temperatures detected by the temperature detection means, and a determination means for determining whether photography is in the first mode or the second mode; and the control means comprises: The aforementioned When photographing in a first mode, the first cooling means and the second cooling means are controlled to be driven; The aforementioned When photographing in the second mode, at least the second cooling means is controlled to be driven. The first mode is handheld shooting, and the second mode is shooting other than handheld shooting. . [Effects of the Invention]

[0007] According to the present invention, it is possible to determine the region to be cooled preferentially depending on the imaging method or imaging environment. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a block diagram for explaining components of an imaging device 100 and a cooling device 200 according to the first embodiment. [Figure 2] 1 is a diagram for explaining an example of the arrangement of an internal cooling section 202 of a cooling device 200 attached to the imaging device 100. FIG. [Figure 3] 10 is a flowchart for explaining a control method of the cooling device 200 by the imaging device 100 of the first embodiment. [Figure 4] 4 is a flowchart for explaining a method of controlling the cooling device 200 by the imaging device 100 when it is determined in step S302 of FIG. 3 that the first mode is selected. [Figure 5] 4 is a flowchart for explaining a method of controlling the cooling device 200 by the imaging device 100 when it is determined in step S302 of FIG. 3 that the second mode is selected. [Figure 6]FIG. 10 is a diagram for explaining the drive start timing of the external cooling unit 203 in response to an external temperature T1 of the imaging device 100 and the drive start timing of the internal cooling unit 202 in response to an internal temperature T2 of the imaging device 100 in the first mode. [Figure 7] 10 is a diagram for explaining the timing at which the internal cooling unit 202 starts driving in response to the internal temperature T3 of the imaging device 100 in the second mode. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0009] Hereinafter, embodiments will be described in detail with reference to the accompanying drawings. Note that the following embodiments do not limit the scope of the invention claimed. Although multiple features are described in the embodiments, not all of these multiple features are necessarily essential to the invention, and multiple features may be combined arbitrarily. Furthermore, in the accompanying drawings, the same reference numerals are used to designate the same or similar components, and redundant explanations will be omitted.

[0010] [Embodiment 1] Fig. 1 is a block diagram illustrating components of an imaging device 100 and a cooling device 200 according to embodiment 1. Fig. 2 is a diagram illustrating an example of the arrangement of an internal cooling unit 202 of the cooling device 200 attached to the imaging device 100.

[0011] The cooling device 200 is an accessory device that can be attached to and detached from the main body of the image capturing device 100. Note that, in the first embodiment, a configuration is described in which the cooling device 200 is configured separately from the image capturing device 100 and attached to an accessory attachment unit (not shown) of the image capturing device 100, but the internal cooling unit 202 and the external cooling unit 203 may be built into the image capturing device 100.

[0012] In addition, in embodiment 1, the imaging device 100 is described as being a single-lens reflex digital camera, but this is not limited to a single-lens reflex digital camera, and the imaging device 100 may be a compact camera, a video camera, or any other device that has a built-in cooling device 200 or can be equipped with a cooling device 200.

[0013] [Device configuration] First, the components of the imaging device 100 will be described with reference to FIGS.

[0014] The system control unit 101 has a microprocessor that controls the entire imaging device 100. The system control unit 101 controls each component of the imaging device 100 by executing a program stored in a storage unit 109, which will be described later. Here, the program refers to a program for executing the processing of the flowchart of the first embodiment, which will be described later.

[0015] The optical system control unit 102 controls the imaging optical system including the lens, aperture, shutter, and mechanisms for driving them.

[0016] The imaging unit 103 has an image sensor configured with photoelectric conversion elements such as a CCD or CMOS that converts an optical image of a subject formed by an imaging optical system into an electrical signal. The imaging unit 103 also has an A / D conversion unit that converts an analog image signal generated by capturing the optical image of the subject into a digital signal.

[0017] The system control unit 101 performs predetermined calculations using the image data generated by the imaging unit 103, and based on the results obtained, controls the imaging optical system using the lens control unit 102 to perform AF (autofocus) processing and AE (automatic exposure) processing.

[0018] The temperature detection unit 104 detects the temperature inside and outside (exterior) of the image capture device 100. The temperature detection unit 104 detects the temperature using temperature detection elements arranged inside and outside the image capture device 100. The system control unit 101 controls the driving of an internal cooling unit 202 and an external cooling unit 203 of the cooling device 200, which will be described later, in accordance with the temperature detected by the temperature detection unit 104.

[0019] The memory unit 105 stores image data output from the imaging unit 103 and image data to be displayed on the display unit 107. The memory unit 105 has a storage capacity sufficient to store video and audio for a predetermined period of time. The memory unit 105 stores temperature data inside and outside the imaging device 100 detected by the temperature detection unit 104, and temperature information such as a temperature change rate for each imaging method calculated from the temperature data.

[0020] The operation unit 106 includes switches, buttons, dials, etc. that accept user operations such as power on / off, shooting preparation instructions, shooting instructions, menu screen display, and operation mode change. The operation unit 106 also includes a touch sensor that can detect touch operations on the display unit 107, which will be described later. The operation mode of the imaging device 100 can be switched, for example, to a still image shooting mode, a video recording mode, or a playback mode. In the still image shooting mode, a single-shot shooting mode or a continuous-shot shooting mode can be selected. In the video recording mode, a recording image quality such as FHD or 4K and a frame rate such as 30P, 60P, or 120P can be selected.

[0021] When a shutter button included in the operation unit 106 is half-pressed, a shooting preparation instruction (shutter switch signal SW1 ON) is input from the operation unit 106 to the system control unit 101. The system control unit 101 starts AF processing, AE processing, WB (white balance) processing, EF (flash light control) processing, etc. using image data at the time of receiving the shooting preparation instruction.

[0022] Furthermore, when a shutter button included in the operation unit 106 is fully pressed, a shooting instruction (shutter switch signal SW2 ON) is input from the operation unit 106 to the system control unit 101. Upon receiving the shooting instruction, the control unit 101 starts a series of shooting processes from reading out a signal from the imaging unit 103 to writing the captured image into the storage unit 109 as an image file.

[0023] The display unit 107 includes an LCD or an organic EL display, and displays the shooting status of the imaging device 100, captured images, various settings, operation modes, etc. The display unit 107 is provided with a touch sensor. The touch sensor can detect contact (touch operation) with the display surface of the display unit 107 (touch operation surface of the touch sensor).

[0024] The communication unit 108 is an interface that connects to an external device so as to be able to communicate with the external device. The communication unit 108 is a wireless LAN, a wired LAN, a USB, a Bluetooth (registered trademark), or the like, and is capable of transmitting and receiving various signals or data to and from the external device, and remotely controlling the imaging device 100 from the external device.

[0025] The storage unit 109 is a non-volatile memory such as a ROM, a memory card, a hard disk, etc. The storage unit 109 stores image files, constants for the operation of the system control unit 101, programs, etc.

[0026] The power supply control unit 110 is configured with a battery detection circuit, a DC-DC converter, a switch circuit for switching between powered blocks, etc., and detects whether a battery is installed, the type of battery, and the remaining battery capacity. The power supply control unit 110 also controls the DC-DC converter based on the on / off status of the power switch, the battery detection results, instructions from the system control unit 101, etc., and supplies the required voltage to each component, including the cooling device 200, for the required period of time.

[0027] The power supply unit 114 is composed of a rechargeable battery such as a NiCd battery, a NiMH battery, or a Li-ion battery, an AC adapter, etc. The power supply unit 114 outputs electric power to the power supply control unit 110 and the power supply unit 204 of the cooling device 200.

[0028] The communication control unit 111 controls transmission and reception of data to and from an external device connected via the communication unit 108. The communication control unit 111 transmits temperature information for each imaging method calculated by the system control unit 101 using temperature data detected by the temperature detection unit 104 to the temperature information calculation unit 205 of the cooling device 200. The communication control unit 111 also transmits imaging state information such as vibrations and posture changes of the imaging device 100 detected by the posture detection unit 113 to the temperature information calculation unit 205 of the cooling device 200.

[0029] The audio control unit 112 converts audio data input via a microphone or the like into a digital signal and stores it in the storage unit 109, or reads out the audio data stored in the storage unit 109 and outputs it from a speaker or the like. In the video shooting mode, the audio control unit 112 can record audio data in synchronization with video data, and in the still image shooting mode, can record audio data attached to still image data.

[0030] The orientation detection unit 113 detects vibrations and orientation changes of the imaging device 100 caused by the user's hand shake, camera work, etc. An acceleration sensor, a gyro sensor, or the like is used for the orientation detection unit 113. The system control unit 101 performs vibration isolation control by operating a shift lens included in the shooting unit 103 in accordance with the vibrations and orientation changes of the imaging device 100 detected by the orientation detection unit 113. Furthermore, based on the vibrations and orientation changes of the imaging device 100 detected by the orientation detection unit 113, the system control unit 101 determines whether the user is using the imaging device 100 for handheld shooting or for other shooting methods.

[0031] Next, the components of the cooling device 200 will be described with reference to FIGS.

[0032] The cooling control unit 201 controls the operation of the internal cooling unit 202 and the external cooling unit 203. The internal cooling unit 202 and the external cooling unit 203 each include a fan and a motor for driving the fan. As shown in FIG. 2 , the internal cooling unit 202 is provided in a location capable of cooling the inside of the imaging device 100. Depending on the operation mode of the imaging device 100, the inside of the imaging device 100 can become hot due to heat sources such as the processor of the system control unit 101, the imaging unit 103, and the power supply control unit 110. For this reason, the internal temperature of the imaging device 100 is cooled by the internal cooling unit 202 so that it does not exceed a temperature limit. The external cooling unit 203 is provided in a location capable of cooling the exterior of the imaging device 100. The exterior of the imaging device 100 is, for example, the grip unit 120 by which a user holds the imaging device 100. When handheld photography is performed, the temperature rises when the user grips the grip section 120, so the external cooling section 203 cools the image capture device 100 so that the external temperature does not exceed a temperature limit.

[0033] The temperature information calculation unit 205 calculates the temperature change rate inside and outside the imaging device 100 from the temperature data inside and outside the imaging device 100 received from the communication control unit 111 of the imaging device 100. Then, the temperature information calculation unit 205 transmits the calculation result to the cooling control unit 201 and the system control unit 101 of the imaging device 100.

[0034] The cooling control unit 201 controls the driving of the internal cooling unit 202 and the external cooling unit 203 based on the temperature change rate input from the temperature information calculation unit 205 , thereby cooling the inside and outside of the imaging device 100 .

[0035] The temperature information calculation unit 205 calculates the internal temperature rise times D2, D3 and the external temperature rise time D1 of the imaging device 100 using the temperature change rate, and transmits them to the imaging device 100. The system control unit 101 displays a drive warning for the internal cooling unit 202 and the external cooling unit 203 on the display unit 107 based on a comparison between the internal temperature rise times D2, D3 and the external temperature rise time D1 of the imaging device 100 received from the cooling device 200 and the time thresholds DA, DB, DC.

[0036] The power supply unit 204 receives power from the power supply unit 114 of the imaging device 100 and an external power supply connected to a power supply connection unit 206, and supplies the power to each component of the cooling device 200. The power supply unit 204 can convert the voltage supplied from the imaging device 100 and the external power supply into a voltage appropriate for operating each component of the cooling device 200.

[0037] [Method for controlling the cooling device 200 by the imaging device 100] Next, a control method for the cooling device 200 by the imaging device 100 of the first embodiment will be described with reference to FIGS.

[0038] FIG. 3 is a flowchart for explaining a control method of the cooling device 200 by the imaging device 100 of the first embodiment.

[0039] The processing in FIGS. 3 to 5 is realized by the system control unit 101 executing a program stored in the storage unit 109 to control each component of the imaging device 100.

[0040] In step S301, the system control unit 101 determines whether the power has been turned on by the operation unit 106. If the system control unit 101 determines that the power has not been turned on, it repeats the determination operation until the power is turned on. If the system control unit 101 determines that the power has been turned on, the process proceeds to step S302.

[0041] In step S302, the system control unit 101 determines the shooting method. Based on the vibration and change in posture of the imaging device 100 detected by the posture detection unit 113, the system control unit 101 determines whether the user will shoot in a first mode including handheld shooting, or in a second mode including shooting using a tripod or the like other than handheld shooting.

[0042] If it is determined that the first mode is selected, the system control unit 101 displays on the display unit 107 that cooling will be performed in the first mode, and the process proceeds to step S400 shown in FIG.

[0043] If it is determined that the second mode is selected, the system control unit 101 displays on the display unit 107 that cooling will be performed in the second mode, and the process proceeds to step S500 shown in FIG.

[0044] In the first embodiment, a control method is described according to the shooting method, whether handheld or not, but a control method may be used according to the shooting environment, such as the shooting location (indoors / outdoors) and the temperature.

[0045] <First mode> Next, an example of operation when it is determined in step S302 of FIG. 3 that the first mode is selected will be described with reference to FIGS.

[0046] FIG. 4 is a flowchart for explaining a method for controlling the cooling device 200 by the imaging device 100 when it is determined in step S302 of FIG. 3 that the first mode is selected.

[0047] In step S401, the system control unit 101 sets an external cooling unit drive threshold value TA, which is a temperature at which the external cooling device 202 is driven.

[0048] In step S402 , the system control unit 101 causes the temperature detection unit 104 to measure a first external temperature T1 and a first internal temperature T2 of the image capture device 100 .

[0049] In step S403, the system control unit 101 measures the second external temperature T2 and the second internal temperature T2' again a predetermined time after the temperature measurement in step S402.

[0050] In step S404, the system control unit 101 calculates the external temperature change rate ΔT1 (e.g., T1' / T1) using the first external temperature T1 and the second external temperature T1' measured in steps S402 and S403 using the temperature information calculation unit 205 of the cooling device 200.

[0051] In step S405, the system control unit 101 determines whether the external temperature T1 is rising using the external temperature change rate ΔT1 calculated in step S404. If the system control unit 101 determines that the external temperature T1 is rising, the process proceeds to step S406. If the system control unit 101 determines that the external temperature T1 is falling, the process proceeds to step S411. In step S406, the system control unit 101 causes the temperature information calculation unit 205 to calculate the external temperature rise time D1 until the external air temperature T1 reaches the external cooling unit drive threshold value TA, using the external temperature change rate ΔT1.

[0052] In step S407, the system control unit 101 determines whether the external temperature rise time D1 calculated in step S406 is equal to or shorter than a predetermined time threshold DA. If the system control unit 101 determines that the external temperature rise time D1 is equal to or shorter than the predetermined time threshold DA (D1≦DA), the process proceeds to step S4208 because the time until the external temperature T1 reaches the external cooling unit drive threshold TA is short. If the system control unit 101 determines that the external temperature rise time D1 is longer than the predetermined time threshold DA (D1>DA), the process proceeds to step S414.

[0053] In step S408, the system control unit 101 displays a warning to drive the external cooling device 202 on the display unit 107.

[0054] In step S409, the system control unit 101 determines whether the second external temperature T1' exceeds the external cooling unit drive threshold TA. If the system control unit 101 determines that the second external temperature T1' exceeds the external cooling unit drive threshold TA (T1'>TA), the process proceeds to step S410. If the system control unit 101 determines that the second external temperature T1' is equal to or less than the external cooling unit drive threshold TA (T1'≦TA), the process proceeds to step S414.

[0055] In step S410, the system control unit 101 starts driving the external cooling unit 203, and the process proceeds to step S414.

[0056] In step S411, if the external temperature T1 is decreasing from the external temperature change rate ΔT1 in step S405, the system control unit 101 determines whether the external cooling device 202 is operating. If the system control unit 101 determines that the external cooling device 202 is not operating, the process proceeds to step S414. If the system control unit 101 determines that the external cooling device 202 is operating, the process proceeds to step S412.

[0057] In step S412, the system control unit 101 determines whether the second external temperature T1' is equal to or less than the external cooling unit drive threshold TA. If the system control unit 101 determines that the second external temperature T1' is equal to or less than the external cooling unit drive threshold TA (T1'≦>TA), the process proceeds to step S413. If the system control unit 101 determines that the second external temperature T1' exceeds the external cooling determination threshold TA (T1'>TA), the process proceeds to step S414.

[0058] In step S413, the system control unit 101 stops driving the external cooling device 202, and the process proceeds to step S414.

[0059] In step S414, the system control unit 101 calculates the internal temperature change rate ΔT2 (e.g., T2' / T2) using the first internal temperature T2 and the second internal temperature T2' measured in steps S402 and S403 using the temperature information calculation unit 205 of the cooling device 200.

[0060] In step S415, the system control unit 101 determines whether the internal temperature T2 is increasing using the internal temperature change rate ΔT2 calculated in step S414. If the system control unit 101 determines that the internal temperature T2 is increasing, the process proceeds to step S416. If the system control unit 101 determines that the internal temperature T2 is decreasing, the process proceeds to step S421. In step S416, the system control unit 101 causes the temperature information calculation unit 205 to calculate the internal temperature rise time D2 until the internal temperature T2 reaches the internal cooling unit drive threshold value TB, using the internal temperature change rate ΔT2.

[0061] In step S417, the system control unit 101 determines whether the internal temperature rise time D2 calculated in step S416 is equal to or shorter than a predetermined time threshold DB. If the system control unit 101 determines that the internal temperature rise time D2 is equal to or shorter than the predetermined time threshold DB (D2≦DB), the time until the internal temperature T2 reaches the internal cooling unit drive threshold TB is short, and the process proceeds to step S418. If the system control unit 101 determines that the internal temperature rise time D2 is longer than the predetermined time threshold DB (DB>D2), the process proceeds to step S424.

[0062] In step S418, the system control unit 101 displays a warning to drive the internal cooling unit 202 on the display unit 107.

[0063] In step S419, the system control unit 101 determines whether the second internal temperature T2' exceeds the internal cooling unit drive threshold TB. If the system control unit 101 determines that the second internal temperature T2' exceeds the internal cooling unit drive threshold TB, the process proceeds to step S420. If the system control unit 101 determines that the second internal temperature T2' is equal to or lower than the internal cooling unit drive threshold TB, the process proceeds to step S414.

[0064] In step S420, the system control unit 101 starts driving the internal cooling unit 202, and the process proceeds to step S424.

[0065] In step S421, if the internal temperature T2 is decreasing from the internal temperature change rate ΔT2 in step S415, the system control unit 101 determines whether the internal cooling unit 202 is operating. If the system control unit 101 determines that the internal cooling unit 202 is not operating, the process proceeds to step S424, and if the system control unit 101 determines that the internal cooling unit 202 is operating, the process proceeds to step S422.

[0066] In step S422, the system control unit 101 determines whether the second internal temperature T2' is equal to or less than the internal cooling unit drive threshold TB. If the system control unit 101 determines that the second internal temperature T2' is equal to or less than the internal cooling unit drive threshold TB (T2'≦TB), the process proceeds to step S423. If the system control unit 101 determines that the second internal temperature T2' exceeds the internal cooling unit drive threshold TB (T2'>TB), the process proceeds to step S424.

[0067] In step S423, the system control unit 101 stops driving the internal cooling unit 202, and the process proceeds to step S424.

[0068] In step S424, the system control unit 101 determines whether a control end event for handheld shooting has occurred. If the system control unit 101 determines that a control end event for handheld shooting has occurred, it ends the flowchart in Fig. 4. If the system control unit 101 determines that a control end event for handheld shooting has not occurred, it returns the process to step S402.

[0069] An event for ending handheld photography control occurs, for example, when the imaging device 100 is powered off or when the device transitions to a power-saving mode.

[0070] FIG. 6 is a diagram for explaining the drive start timing of the external cooling unit 203 in response to the external temperature T1 of the imaging device 100 and the drive start timing of the internal cooling unit 202 in response to the internal temperature T2 in the first mode.

[0071] 6, when the first mode is determined, an external cooling unit drive threshold value TA is set for the image capture device 100. In addition, the first external temperature T1 and the second external temperature T1' are measured, an external temperature change rate ΔT1 is calculated, and an external temperature rise time D1 until the external temperature T1 reaches the external cooling unit drive threshold value TA is calculated from the external temperature change rate ΔT1.

[0072] When the external temperature rise time D1 is less than or equal to a predetermined time threshold DA and the time until the external temperature T1 reaches the external cooling unit drive threshold TA is short, a drive warning for the external cooling unit 203 is displayed on the display unit 107. When the second external temperature T1' exceeds the external cooling unit drive threshold TA, the drive signal for driving the external cooling unit 203 is set to Hi, and the external cooling unit 203 is driven.

[0073] Also, the first internal temperature T2 and the second internal temperature T2' are measured, the internal temperature change rate ΔT2 is calculated, and from the internal temperature change rate ΔT2, the internal temperature rise time D2 until the internal temperatures T2 and T2' reach the internal cooling unit drive threshold TB is calculated. When the internal temperature rise time D2 is less than or equal to a predetermined time threshold DB and the time until the internal temperature T2 reaches the internal cooling unit drive threshold TB is short, a drive warning for the internal cooling unit 202 is displayed on the display unit 107. When the second internal temperature T2' exceeds the internal cooling unit drive threshold TB, the drive signal for driving the internal cooling unit 202 is set to Hi, and the internal cooling unit 202 is driven.

[0074] Note that the internal cooling unit drive threshold TB is set to a temperature lower than the external cooling unit drive threshold TA (TB < TA). As a result, the internal cooling unit 202 is driven in a state where the temperature is lower than that of the external cooling unit 203, so that the inside of the imaging device 100 is preferentially cooled rather than the outside.

[0075] Also, a limit temperature T2max is set for the internal temperature T2 of the imaging device 100. When the internal temperature T2 of the imaging device 100 exceeds the limit temperature T2max, the operation of the components inside the imaging device 100 is restricted or stopped. Also, a limit temperature T1max is set for the external temperature T1 of the imaging device 100. When the external temperature T1 of the imaging device 100 exceeds the limit temperature T1max, the operation of all components including the exterior of the imaging device 100 is restricted or stopped.

[0076] <Second Mode> Next, referring to FIGS. 5 and 7, a method for controlling the cooling device 200 by the imaging device 100 when it is determined to be in the second mode in step S302 of FIG. 3 will be described.

[0077] FIG. 5 is a flowchart for explaining a method for controlling the cooling device 200 by the imaging device 100 when it is determined in step S302 of FIG. 3 that the second mode is selected.

[0078] In step S501, the system control unit 101 resets the setting of the external cooling unit drive threshold value TA.

[0079] In step S502, the system control unit 101 causes the temperature detection unit 104 to measure the first internal temperature T3 of the image capture device 100.

[0080] In step S503, the system control unit 101 measures the second internal temperature T3' again after a predetermined time has elapsed since the temperature measurement in step S502.

[0081] In step S504, the system control unit 101 calculates the internal temperature change rate ΔT3 (e.g., T3' / T3) using the first internal temperature T3 and the second internal temperature T3' measured in steps S502 and S503 using the temperature information calculation unit 205 of the cooling device 200.

[0082] In step S505, the system control unit 101 determines whether the internal temperature is rising using the internal temperature change rate ΔT3 calculated in step S504. If the system control unit 101 determines that the internal temperature is rising, the process proceeds to step S506, and if the system control unit 101 determines that the internal temperature is falling, the process proceeds to step S511.

[0083] In step S506, the system control unit 101 causes the temperature information calculation unit 205 to calculate the internal temperature rise time D3 up to the internal cooling unit drive threshold value TC using the internal temperature change rate ΔT3.

[0084] In step S507, the system control unit 101 determines whether the internal temperature rise time D3 calculated in step S506 is equal to or shorter than a predetermined time threshold DC. If the system control unit 101 determines that the internal temperature rise time D3 is equal to or shorter than the predetermined time threshold DC (D3≦DC), the time until the internal temperature T3 reaches the internal cooling unit activation threshold TC is short, and the process proceeds to step S508. If the system control unit 101 determines that the internal temperature rise time D3 is longer than the predetermined time threshold DC (DC>D3), the process proceeds to step S514.

[0085] In step S508, the system control unit 101 displays a warning to drive the internal cooling unit 202 on the display unit 107.

[0086] In step S509, the system control unit 101 determines whether the second internal temperature T3' exceeds the internal cooling unit drive threshold value TC. If the system control unit 101 determines that the second internal temperature T3' exceeds the internal cooling unit drive threshold value TC, the process proceeds to step S510. If the system control unit 101 determines that the second internal temperature T3' is equal to or less than the internal cooling unit drive threshold value TC, the process proceeds to step S514.

[0087] In step S510, the system control unit 101 starts driving the internal cooling unit 202, and the process proceeds to step S514.

[0088] In step S511, if the internal temperature increase rate ΔT3 is decreasing in step S505, the system control unit 101 determines whether the internal cooling unit 202 is operating. If the system control unit 101 determines that the internal cooling unit 202 is not operating, the process proceeds to step S514. If the system control unit 101 determines that the internal cooling unit 202 is operating, the process proceeds to step S512.

[0089] In step S512, the system control unit 101 determines whether the second internal temperature T3' is equal to or less than the internal cooling unit drive threshold value TC. If the system control unit 101 determines that the second internal temperature T3' is equal to or less than the internal cooling unit drive threshold value TC (T3'≦TC), the process proceeds to step S513. If the system control unit 101 determines that the second internal temperature T3' exceeds the internal cooling unit drive threshold value TC (TC>T3'), the process proceeds to step S514.

[0090] In step S513, the system control unit 101 stops driving the internal cooling unit 202, and the process proceeds to step S514.

[0091] In step S514, the system control unit 101 determines whether a control end event for shooting other than handheld shooting has occurred. If the system control unit 101 determines that a control end event for shooting other than handheld shooting has occurred, it ends the flowchart in Fig. 5. If the system control unit 101 determines that a control end event for shooting other than handheld shooting has not occurred, it returns the process to step S502.

[0092] An event for ending handheld photography control occurs, for example, when the imaging device 100 is powered off or when the device transitions to a power-saving mode.

[0093] FIG. 7 is a diagram for explaining the drive start timing of the internal cooling unit 202 according to the internal temperature T3 of the imaging device 100 in the second mode.

[0094] 7, if the second mode is determined, the external cooling determination threshold TA of the imaging device 100 is reset. The first internal temperature T3 and the second internal temperature T3' are measured, and the internal temperature change rate ΔT3 is calculated. From the internal temperature change rate ΔT3, the internal temperature rise time D3 required for the internal temperatures T2 and T2' to reach the internal cooling unit drive threshold TC is calculated. If the internal temperature rise time D3 is equal to or less than a predetermined time threshold DC and the time required for the internal temperature T3 to reach the internal cooling unit drive threshold TC is short, a drive warning for the internal cooling unit 202 is displayed on the display unit 107. If the second internal temperature T3' exceeds the internal cooling unit drive threshold TC, the drive signal for driving the internal cooling unit 202 is set to Hi, and the internal cooling unit 202 is driven.

[0095] A limit temperature T3max is set for the internal temperature T3 of the imaging device 100, and if the internal temperature T3 of the imaging device 100 exceeds the limit temperature T3max, the operation of the components inside the imaging device 100 is limited or stopped. Also, a limit temperature T1max is set for the external temperature T1 of the imaging device 100, and if the external temperature T1 of the imaging device 100 exceeds the limit temperature T1max, the operation of all components including the exterior of the imaging device 100 is limited or stopped.

[0096] As described above, according to the first embodiment, when cooling image capture device 100 with cooling device 200, in a first mode including handheld shooting, cooling device 200 is controlled so as to cool both the outside and the inside of image capture device 100. Also, in a second mode including shooting modes other than handheld shooting, cooling device 200 is controlled so as to preferentially cool the inside of image capture device 100. In this way, it becomes possible to determine the part to be preferentially cooled depending on the shooting method or shooting environment.

[0097] In the second mode, the cooling device 200 is controlled to cool the inside of the imaging device 100. However, when shooting outdoors in a season with a high maximum temperature, etc., it is assumed that the temperature of the exterior of the imaging device 100 will also become high. In such a case, not only the inside of the imaging device 100 but also the outside may be cooled. In this case, the internal cooling unit drive threshold TC is set to a temperature lower than the external cooling unit drive threshold TA (TC < TA). As a result, the internal cooling unit 202 is driven in a state where its temperature is lower than that of the external cooling unit 203, so that the inside of the imaging device 100 is preferentially cooled compared to the outside.

[0098] [Other Embodiments] The present invention can also be realized by supplying a program that realizes one or more functions of the above-described embodiments to a system or device via a network or a storage medium, and having one or more processors in a computer of the system or device read and execute the program. It can also be realized by a circuit (for example, an ASIC) that realizes one or more functions.

[0099] The invention is not limited to the above-described embodiments, and various changes and modifications are possible without departing from the spirit and scope of the invention. Therefore, claims are appended to disclose the scope of the invention.

Explanation of Reference Numerals

[0100] 100... Imaging device, 101... System control unit, 104... Temperature detection unit, 200... Cooling device, 201... Cooling control unit, 202... Internal cooling unit, 203... External cooling unit, 205... Temperature information calculation unit

Claims

1. a temperature detection means for detecting an internal temperature of the imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit; a determination means for determining whether photography is in the first mode or the second mode, the control means controls the first cooling means and the second cooling means to be driven when photographing in the first mode, and controls the second cooling means to be driven when photographing in the second mode; An imaging apparatus, wherein the first mode is handheld photography, and the second mode is photography other than handheld photography.

2. an attitude detection means for detecting vibration of the imaging device; the determining means determines that the photographing is handheld when a predetermined vibration is detected by the attitude detecting means, 2. The imaging apparatus according to claim 1, wherein if the predetermined vibration is not detected, it is determined that the imaging is other than handheld imaging.

3. A temperature detection means for detecting an internal temperature of an imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit, the control means controls the first cooling means and the second cooling means to be driven when photographing in a first mode, and controls the second cooling means to be driven when photographing in a second mode; The control means In the first mode, the driving of the first cooling means is controlled based on a first temperature threshold, and the driving of the second cooling means is controlled based on a second temperature threshold that is lower than the first temperature threshold; In the second mode of photography, the first temperature threshold is reset, and the drive of the second cooling means is controlled based on a third temperature threshold.

4. the control means, in photographing in the first mode, drives the first cooling means when the temperature outside the imaging device exceeds the first temperature threshold, and drives the second cooling means when the temperature inside the imaging device exceeds the second temperature threshold; 4. The imaging device according to claim 3, wherein, in the second mode of imaging, the second cooling means is controlled to be driven when the temperature inside the imaging device exceeds the third temperature threshold.

5. A temperature detection means for detecting an internal temperature of an imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit, the control means controls the first cooling means and the second cooling means to be driven when photographing in a first mode, and controls the second cooling means to be driven when photographing in a second mode; The control means calculating a rate of change of temperature inside the imaging device and a rate of change of temperature outside the imaging device; calculating a time until the temperature outside the imaging device reaches a predetermined temperature based on a rate of change of the temperature outside the imaging device, and notifying that the first cooling means is to be driven based on the calculated time; An imaging device characterized by calculating the time it takes for the temperature inside the imaging device to reach a predetermined temperature based on a rate of change of the temperature inside the imaging device, and notifying that the second cooling means will be driven based on the calculated time.

6. the control means, in photographing in the first mode, performs control to drive the first cooling means when the temperature outside the imaging device is rising based on a rate of change of the temperature outside the imaging device, and performs control to stop the first cooling means when the temperature outside the imaging device is falling, When the temperature inside the imaging device is rising based on a rate of change of the temperature inside the imaging device, control is performed to drive the second cooling means, and when the temperature inside the imaging device is falling, control is performed to stop the second cooling means; In the second mode, when the temperature inside the imaging device is rising based on a rate of change of the temperature inside the imaging device, control is performed to drive the second cooling means; 6. The imaging device according to claim 5, wherein when the temperature inside the imaging device is decreasing, the second cooling means is stopped.

7. 7. The imaging device according to claim 1, wherein a cooling device including the first cooling means and the second cooling means is attachable to the imaging device.

8. A control method for an imaging device, comprising: The imaging device is a temperature detection means for detecting an internal temperature of the imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit, The control method includes: a step of determining whether photography is in a first mode or a second mode; a step of controlling the first cooling means and the second cooling means to be driven when photographing is performed in the first mode, and controlling the second cooling means to be driven when photographing is performed in the second mode, 10. A method for controlling an image capturing apparatus, wherein the first mode is handheld photography, and the second mode is photography other than handheld photography.

9. A control method for an imaging device, comprising: The imaging device is a temperature detection means for detecting an internal temperature of the imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit, The control method includes: a step of controlling the first cooling means and the second cooling means to be driven when photographing is performed in a first mode, and controlling the second cooling means to be driven when photographing is performed in a second mode, In the controlling step, In the first mode, the driving of the first cooling means is controlled based on a first temperature threshold, and the driving of the second cooling means is controlled based on a second temperature threshold that is lower than the first temperature threshold; A control method for an imaging apparatus, characterized in that, in the second mode of imaging, the first temperature threshold is reset, and driving of the second cooling means is controlled based on a third temperature threshold.

10. A control method for an imaging device, comprising: The imaging device is a temperature detection means for detecting an internal temperature of the imaging device and an external temperature of the imaging device; a control unit that controls a first cooling unit that cools the outside of the imaging device and a second cooling unit that cools the inside of the imaging device based on the temperature detected by the temperature detection unit, The control method includes: a step of controlling the first cooling means and the second cooling means to be driven when photographing is performed in a first mode, and controlling the second cooling means to be driven when photographing is performed in a second mode, In the controlling step, calculating a rate of change of temperature inside the imaging device and a rate of change of temperature outside the imaging device; calculating a time until the temperature outside the imaging device reaches a predetermined temperature based on a rate of change of the temperature outside the imaging device, and notifying that the first cooling means is to be driven based on the calculated time; A control method for an imaging device, comprising: calculating a time for the temperature inside the imaging device to reach a predetermined temperature based on a rate of change of the temperature inside the imaging device; and notifying the user that the second cooling means will be driven based on the calculated time.

11. A program for causing a computer to execute the control method for an imaging device described in any one of claims 8 to 10.

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