electronic machinery

Abstract

To provide an electronic apparatus capable of generating an excellent voice by reducing both of a wind noise and a mechanical operation noise becoming noises in sound recording and in video recording.SOLUTION: An imaging apparatus 1 which is the electronic apparatus includes a microphone unit 200 which has a microphone storage part 300 and is movable between a first position where the microphone unit 200 is stored inside an imaging apparatus main body 10 and a second position where the microphone unit 200 is projected to the outside of the imaging apparatus main body 10. The microphone storage part 300 has a first opening 302b and a second opening 302c. The first opening 302b is exposed to the outside of the imaging apparatus main body 10 regardless of the position of the microphone unit 200. The second opening 302c is hermetically closed by the imaging apparatus main body 10 inside the imaging apparatus main body 10, in such a state that the microphone unit 200 is in the first position and is exposed to the outside of the imaging apparatus main body 10, in such a state that the microphone unit 200 is in the second position.SELECTED DRAWING: Figure 7

Description

Technical Field

[0001] The present invention relates to an electronic device.

Background Art

[0002] In recent years, imaging devices that can capture still images while following the design shape of an electronic still camera and can also capture (record) and play back moving images have been increasingly popular. Along with this popularity, it is also desired that the imaging device can record high-quality audio.

[0003] By the way, a general imaging device is configured to be able to execute operations such as changing the magnification by moving a part of a frame member that holds a photographing lens in the optical axis direction during photographing, or focusing by driving and controlling a part of the photographing lens. When such operations are executed, driving sounds are generated from the driving motor itself for such operations, the driving force transmission mechanism for transmitting the driving force of the driving motor, etc., or sliding sounds are generated due to the movement of the frame member. In particular, a photographing lens used in an interchangeable lens imaging device has a structure in which the aperture diameter is changed by rotating an aperture ring or the like. Also in this case, driving sounds are generated from the driving motor itself for driving the aperture blades, the driving force transmission mechanism for transmitting the driving force of the driving motor, etc., or friction sounds due to rubbing between the aperture blades are generated. In addition, in a general imaging device, for example, operation members such as a release button for instructing the start of photographing, a zoom button for instructing the zoom operation of the lens, and an electronic dial for changing setting items such as photographing conditions are arranged on the exterior. And when the operation member is operated, an operating sound from the operation member is generated and propagates through the exterior of the imaging device. Such mechanical operating sounds may be input to and recorded by the microphone during video shooting.

[0004] Furthermore, when shooting outdoors, wind can blow against the microphone, resulting in recorded wind noise. Wind noise is considered noise because it is a type of audio information that the photographer does not want to record. Therefore, it is desirable to reduce this noise during audio recording. For example, Patent Document 1 discloses a device comprising a microphone, a porous filter element placed over the microphone, and a cylindrical case that holds the microphone and the porous filter element and is provided with a group of sound holes. With this configuration, the device described in Patent Document 1 can reduce wind noise by attenuating wind pressure and expelling the wind that enters the cylindrical case to the outside. [Prior art documents] [Patent Documents]

[0005] [Patent Document 1] Japanese Patent Publication No. 2004-297765 [Overview of the project] [Problems that the invention aims to solve]

[0006] However, mechanical operating noise can also be considered noise, just like wind noise. If the device described in Patent Document 1 is mounted on an imaging device that has relatively loud mechanical operating noise, such as the drive noise of the photographic lens's drive motor, wind noise can be reduced, but mechanical operating noise may enter through the sound holes of the cylindrical case and be recorded as noise.

[0007] Therefore, the objective of the present invention is to provide an electronic device that can reduce both wind noise and mechanical operating noise, which can become noise during recording or video recording, and enable the generation of good sound. [Means for solving the problem]

[0008] To achieve the above objective, the electronic device of the present invention comprises a main body, a drive unit provided in the main body that generates operating noise when driven, a microphone, a holding member that holds the microphone, and a case that houses the microphone together with the holding member, and a microphone unit that is movable between a first position housed inside the main body and a second position protruding outside the main body, the case having a first opening that penetrates through its interior and exterior, and a second opening that penetrates through its interior and exterior at a different position from the first opening, the holding member having a communication portion that connects the first opening and the second opening inside the case, the first opening being exposed to the outside of the main body regardless of the position of the microphone unit, and the second opening being sealed inside the main body when the microphone unit is in the first position, and exposed to the outside of the main body when the microphone unit is in the second position. The main body is made of an elastic material and has a sealing member that seals the second opening when the microphone unit is in the first position, and has a locking member that can be moved to take between a fixed state that fixes the microphone unit in the first position and a released state that releases the fixed state, the sealing member is moved together with the locking member and seals the second opening when the locking member is in the fixed state It is characterized by doing so. [Effects of the Invention]

[0009] According to the present invention, it is possible to reduce both wind noise and mechanical operating noise that can become noise during recording or video recording, thereby enabling the generation of high-quality sound. [Brief explanation of the drawing]

[0010] [Figure 1] This is a perspective view of an imaging device to which the electronic device of the present invention is applied ((a) is a front perspective view, (b) is a rear perspective view). [Figure 2] Figure 1 is a block diagram showing an example of the configuration of the control system of the imaging device. [Figure 3] Figure 1 is a perspective view showing the displacement state of the microphone unit of the imaging device ((a) is a rear perspective view showing the microphone unit in its retracted state, and (b) is a rear perspective view showing the microphone unit in its popped-up state). [Figure 4] This diagram shows the stored state of the microphone unit ((a) is a rear view, (b) is a cross-sectional view of (a) along line AA, and (c) is a cross-sectional view of (a) along line BB). [Figure 5]The diagram shows the microphone unit in its popped-up state ((a) is a rear view, (b) is a cross-sectional view of (a) along line AA, and (c) is a cross-sectional view of (a) along line BB). [Figure 6] This is a perspective view of the holding member of the imaging device shown in Figure 1. [Figure 7] These are cross-sectional views of the microphone unit when cut along a plane containing the center line of the microphone ((a) is a cross-sectional view in the retracted state, and (b) is a cross-sectional view in the pop-up state). [Figure 8] This is a conceptual diagram showing the sound recorded by the microphone unit ((a) is a conceptual diagram showing the sound recorded in the retracted state, and (b) is a conceptual diagram showing the sound recorded in the popped-up state). [Modes for carrying out the invention]

[0011] Embodiments of the present invention will be described in detail below with reference to the drawings. However, the configurations described in the following embodiments are merely illustrative, and the scope of the present invention is not limited to the configurations described in the embodiments. In this embodiment, the case in which the electronic device of the present invention is applied to an imaging device that captures images will be described. Note that the electronic device of the present invention is not limited to being applied to an imaging device.

[0012] Figure 1 is a perspective view of an imaging device to which the electronic device of the present invention is applied ((a) is a front perspective view, (b) is a rear perspective view). The imaging device 1 shown in Figure 1 has an imaging device body (main body) 10. As shown in Figure 1(a), the imaging device body 10 has a lens mount 21 provided on its front surface. As a result, a photographic lens 150 having a lens barrel 155 is detachably attached to the imaging device body 10. The imaging device body 10 also has an operating member 103 provided on its top surface. The operating member 103 consists of a plurality of buttons, dials, etc., for the user to perform settings and shooting operations. In this embodiment, the operating member 103 includes a power lever 31 for switching the power ON and OFF, a shutter button 32 for performing shooting operations, and a mode dial 33 for switching shooting modes. A microphone unit 200 for recording sound is also provided on the top surface of the imaging device body 10. This recording includes recording during video recording. As shown in Figure 1(b), the imaging device body 10 has a rear monitor 40, a video button 34, and a menu button 35 located on its back. The rear monitor 40 is a display unit that has, for example, an LCD screen or an OLED screen and displays captured images and live view images. The video button 34 is a button that is operated when shooting video. The menu button 35 is a button that is operated, for example, when making various settings such as imaging conditions.

[0013] Figure 2 is a block diagram showing an example of the control system configuration of the imaging device shown in Figure 1. As shown in Figure 2, the photographic lens 150 has an optical lens 151, an aperture 152, an image stabilization drive unit (in-lens image stabilization drive unit) 153, and a focus drive unit 154. These are housed in the lens barrel 155. The optical lens 151 is an optical lens composed of multiple lenses. The focus drive unit 154 performs focusing by driving a part of the optical lens 151 based on the result of AF processing. The aperture 152 and the shutter button 32 are controlled based on the result of AE processing.

[0014] The imaging device body 10 incorporates a camera shake control unit (in-lens camera shake control unit) 124, an image sensor 111, an A / D conversion unit 106, an image processing unit 107, and a camera shake drive unit (in-body camera shake drive unit) 112. The camera shake control unit 124 controls the camera shake drive unit 153 to counteract the movement of the imaging device 1 caused by, for example, the user's camera shake, and controls the attitude and position of the optical lens 151. The image sensor 111 is an image sensor such as a CCD or CMOS that converts subject information acquired via the photographic lens 150 into electrical signals. The image sensor 111, together with the camera shake drive unit 112, constitutes the image sensor unit 110. The A / D conversion unit 106 converts the analog image signal from the image sensor 111 into digital image data. The image processing unit 107 performs predetermined image processing, such as pixel interpolation and color conversion, on the image data output from the A / D conversion unit 106.

[0015] The imaging device body 10 also incorporates a system control unit 101, an image stabilization control unit (internal image stabilization control unit) 108, a shutter control unit 121, an aperture control unit 122, a distance measuring control unit 123, and a power supply control unit 102. The system control unit 101 consists of a microcomputer unit including a CPU and controls the entire imaging device 1 and its various parts. The image stabilization control unit 108 controls the image stabilization drive unit 112 to counteract the movement of the imaging device 1 caused by, for example, the user's hand shake, and controls the attitude and position of the image sensor unit 110. The shutter control unit 121 controls the shutter button 32. The aperture control unit 122 controls the aperture 152. The distance measuring control unit 123 controls the focus adjustment of the photographic lens 150. The power supply control unit 102 consists of a power supply detection circuit, a DC-DC converter, a switch circuit for switching the circuit block that supplies power, and performs functions such as detecting whether a power supply unit such as a rechargeable battery is installed, the type of power supply unit, and the remaining battery level. Specifically, the power control unit 102 controls the DC-DC converter based on the detection results from the power control unit 102 and the instructions from the system control unit 101, supplying the required voltage to each part, including the recording medium, for the required period of time.

[0016] In addition, the imaging device main body 10 incorporates a microphone (hereinafter referred to as "mic") 201, a microphone (hereinafter referred to as "mic") 202, and a noise canceling microphone (hereinafter referred to as "NC mic") 210. The mics 201, 202, and the NC mic 210 are voice input parts, that is, sound collection parts. By arranging the mics 201, 202, and the NC mic 210 at different positions, different voice waveforms can be obtained. As the mics 201, 202, for example, according to the use of the imaging device 1, a monaural microphone or a stereo microphone is used. The NC mic 210 is a microphone that obtains voice waveforms (noise) unintended by the user. The voice processing unit 125 performs NC processing such as calculating the voice waveform obtained by the NC mic 210 on the voice waveforms obtained from the mics 201 and 202. Thereby, voice with more suppressed noise can be generated.

[0017] In addition, the imaging device main body 10 incorporates a voice processing unit 125, a memory 170, a speaker 130, and an external IF 160. In addition to NC processing, the voice processing unit 125 performs settings for localization, compressor processing, equalizer processing, etc. on the voice waveforms obtained from the mics 201 and 202. Thereby, suitable voice can be generated. Then, the generated voice is stored in the memory 170. In addition, the voice processing unit 125 performs voice generation processing to output the voice waveform stored in the memory 170 from the speaker 130. The external IF 160 is an interface for transmitting and receiving voice and video with an external electronic device.

[0018] Figure 3 is a perspective view showing the displacement state of the microphone unit of the imaging device shown in Figure 1 ((a) is a rear perspective view showing the microphone unit 200 in its retracted state, and (b) is a rear perspective view showing the microphone unit in its popped-up state). In Figure 3, the width direction of the imaging device is the "X direction", the height direction of the imaging device is the "Y direction", and the thickness direction of the imaging device is the "Z direction". As shown in Figure 3, the imaging device 1 has a microphone unit 200. The microphone unit 200 has a microphone 201, a microphone 202, two holding members 309, and a microphone housing (case) 300. Microphones 201 and 202 are arranged side by side in the X direction. One of the two holding members 309 holds microphone 201, and the other holding member 309 holds microphone 202. Microphones 201 and 202 are each housed in the microphone housing 300 along with their respective holding members 309. Since microphones 201 and 202 have the same configuration except for their placement, microphone 201 will be treated as the representative example below.

[0019] The microphone unit 200 is supported so as to be movable in the Z direction above the imaging device main body 10, and can take a storage state (stored state) shown in FIG. 3(a) and a pop-up state (projected state) shown in FIG. 3(b). In the state shown in FIG. 3(a), the microphone unit 200 is located at a first position stored inside the imaging device main body 10. In the state shown in FIG. 3(b), the microphone unit 200 is located at a second position protruding outside the imaging device main body 10. Further, a lock lever (locking member) 301 adjacent to the positive Z side of the microphone unit 200 is provided on the imaging device main body 10. The lock lever 301 is an operation member that can be moved and operated to take a fixed state of fixing the microphone unit 200 at the first position and a release state of releasing the fixed state. When the microphone unit 200 is in the storage state, by moving the lock lever 301 in the positive Z direction, the tension of a tension spring 306 described later is released. Thereby, the fixed state with respect to the microphone unit 200 is released, and the microphone unit 200 moves in the positive Y direction to enter the pop-up state. Also, when the microphone unit 200 is in the pop-up state, it can be returned to the storage state by pushing down the microphone unit 200 in the negative Y direction.

[0020] FIG. 4 is a diagram showing the storage state of the microphone unit ((a) is a rear view, (b) is a cross-sectional view taken along line A-A of (a), and (c) is a cross-sectional view taken along line B-B of (a)). FIG. 5 is a diagram showing the pop-up state of the microphone unit ((a) is a rear view, (b) is a cross-sectional view taken along line A-A of (a), and (c) is a cross-sectional view taken along line B-B of (a)).

[0021] As mentioned above, the microphone unit 200 has a microphone housing section 300. As shown in Figures 4(b) and 5(b), this microphone housing section 300 is composed of a box-shaped upper case 302 and a box-shaped lower case 303 inserted from below the upper case 302. The microphone 201, held by a holding member 309, and the microphone 202, also held by a holding member 309, are housed together in the space enclosed by the upper case 302 and the lower case 303. In particular, each holding member 309 is sandwiched between the upper case 302 and the lower case 303. This prevents misalignment of the microphones 201 and 202 within the microphone housing section 300.

[0022] The imaging device body 10 has a front cover 304 and a rear cover 305. The front cover 304 and the rear cover 305 are positioned opposite each other at the front and rear of the imaging device body 10 via a microphone unit 200 (microphone housing 300). As a result, the microphone unit 200 is sandwiched between the front cover 304 and the rear cover 305 and supported so as to be movable in the vertical direction. In addition, a tension spring 306 for biasing the microphone unit 200 is positioned inside the imaging device body 10 on the rear cover 305 side. The tension spring 306 is made of a tension coil spring, with one end (upper end) engaging with a hook portion 305a provided on the rear cover 305 and the other end (lower end) engaging with a hook portion 303a provided on the lower case 303. The hook portion 305a is a fixed end, and the hook portion 303a is a movable end. Then, in the state shown in Figure 4(b), that is, in the retracted state of the microphone unit 200, the tension spring 306 is in its most extended state. As a result, the tension spring 306 can act on the microphone unit 200 with a biasing force that displaces it from the retracted state (first position) to the popped-up state (second position).

[0023] As shown in Figures 4(c) and 5(c), a compression spring 307 is arranged inside the imaging device body 10 as a biasing member that biases the lock lever 301. The compression spring 307 is made of a compression coil spring and is compressed between the lock lever 301 on the front side of the compression spring 307 and the plate 308 on the back side of the compression spring 307. As a result, the compression spring 307 can act on the lock lever 301 to exert a biasing force that biases the lock lever 301 toward the upper case 302. The lock lever 301 also has a lock portion 301a that protrudes forward. The upper case 302 has a contact portion 302a that the lock portion 301a can engage with and contact. When the lock portion 301a engages with the contact portion 302a, the microphone unit 200 can maintain its stored state against the biasing force of the tension spring 306 (see Figure 4(c)). Furthermore, the biasing force of the compression spring 307 maintains the engagement state between the locking portion 301a and the contact portion 302a. Also, when the lock lever 301 is moved away from the upper case 302 against the biasing force of the compression spring 307, the engagement state between the locking portion 301a and the contact portion 302a is revealed. As a result, the microphone unit 200 can be displaced upward from the stored state to the pop-up state, i.e., upward, by the biasing force of the tension spring 306 (see Figure 5(c)). At this time, the stopper portion 303b of the lower case 303 of the microphone unit 200 comes into contact with the contact portion 305b of the rear cover 305. This restricts the upward movement limit of the microphone unit 200, and thus maintains the pop-up state of the microphone unit 200.

[0024] As mentioned above, the imaging device 1 (imaging device body 10) is equipped with a focus drive unit 154, an image stabilization drive unit 153, an aperture 152, an image stabilization drive unit 112, an operating member 103, etc., which move or rotate when driven. These are drive units that produce mechanical operating noise (operating noise) when driven. Mechanical operating noise can be considered noise because it is the type of audio information that the photographer does not want recorded by the microphone unit 200. Also, when shooting outdoors, for example, wind may blow against the imaging device 1, and wind noise may be recorded by the microphone unit 200. Wind noise can also be considered noise, similar to mechanical operating noise. Therefore, the imaging device 1 is configured to reduce such noise when recording audio. The following describes this configuration and its operation.

[0025] Figure 6 is a perspective view of the holding member of the imaging device shown in Figure 1. The holding member 309 shown in Figure 6 is cylindrical, and a microphone 201 can be inserted into it through the opening 309a. In this way, the microphone 201 is held by the holding member 309. At this time, the microphone 201 is held with its sound collection direction facing upward. A protrusion 309b is formed around the opening 309a, projecting upward in Figure 6. The protrusion 309b is the part that is pressed and compressed by the upper case 302 of the microphone housing 300. In addition, a groove (notch) 309c is formed on the outer circumference of the holding member 309, oriented vertically in Figure 6. This groove 309c functions as a communication part that connects the first opening 302b and the second opening 302c of the microphone housing 300, which will be described later. In this embodiment, the groove 309c is formed from the protrusion 309b to partway along the vertical direction (central axis direction) of the retaining member 309, but is not limited to this. For example, the groove 309c may be formed along the entire length of the retaining member 309. The retaining member 309 is made of an elastic material such as silicone rubber or ethylene propylene diene rubber (EPDM). This prevents noise transmitted through solids from being collected by the microphone 201, and also allows the microphone 201 to float within the retaining member 309.

[0026] Figure 7 is a cross-sectional view of the microphone unit when cut along a plane containing the center line of the microphone ((a) is a cross-sectional view in the retracted state, and (b) is a cross-sectional view in the pop-up state). As shown in Figures 7(a) and 7(b), the microphone housing 300 has a first opening 302b and a second opening 302c provided in the upper case 302. The first opening 302b and the second opening 302c are each composed of through holes that penetrate the inside and outside of the upper case 302 (microphone housing 300). The first opening 302b and the second opening 302c come in pairs, and in this embodiment, two pairs are provided (see Figure 3(b)). One pair is for microphone 201, and the other pair is for microphone 202. Since each pair has the same configuration except for their placement, the first opening 302b and the second opening 302c for microphone 201 will be described representatively below.

[0027] The first opening 302b primarily functions as a sound hole for collecting sound towards the microphone 201. The second opening 302c primarily functions as an air vent (air release hole) for releasing air that has flowed in through the first opening 302b. In this embodiment, the shapes of the first opening 302b and the second opening 302c are oval, but are not limited to this. Furthermore, the shapes of the first opening 302b and the second opening 302c may be the same or different.

[0028] The first opening 302b and the second opening 302c are located in different positions. Specifically, the first opening 302b is located on the top plate 302d of the top case 302, and the second opening 302c is located on the back plate 302e of the top case 302. As a result, the opening direction of the first opening 302b and the opening direction of the second opening 302c are different. That is, the opening direction of the first opening 302b is perpendicular to the optical axis O150 of the photographic lens 150 (lens barrel 155) (upward), and the opening direction of the second opening 302c is in the direction of the optical axis O150 (rearward). Furthermore, the first opening 302b and the second opening 302c are connected spatially inside the microphone storage section 300 via the groove 309c of the retaining member 309.

[0029] As shown in Figures 7(a) and 7(b), the first opening 302b is exposed to the outside of the imaging device body 10 regardless of the position of the microphone unit 200, that is, regardless of whether the microphone unit 200 is in the retracted state or the popped-up state. This allows sound collection (recording) by the microphone unit 200 in either the retracted or popped-up state. The photographer can choose whether to use the microphone unit 200 in the retracted state or the popped-up state during recording, depending on the specifications of the imaging lens 150 and the shooting environment. For example, if the mechanical operating noise of the imaging lens 150 is relatively low and shooting is done indoors, it is expected to be used in the retracted state, while if the mechanical operating noise of the imaging lens 150 is relatively high and shooting is done outdoors, it is expected to be used in the popped-up state.

[0030] Furthermore, in the microphone unit 200, the combination of the upward orientation of the first opening 302b and the upward orientation of the microphone 201 within the holding member 309 improves sound collection efficiency. In addition, a porous member 310 made of a porous material such as urethane is placed between the top plate 302d of the upper case 302 and the microphone 201. The porous member 310 is held by the holding member 309 together with the microphone 201. The porous member 310 can attenuate wind entering through the first opening 302b. This reduces wind noise, which is a source of noise, and enables the generation of good sound.

[0031] As shown in Figure 7(a), when the microphone unit 200 is in its stored state (when the microphone unit 200 is in the first position), the second opening 302c is located inside the imaging device body 10. The second opening 302c is then closed, or sealed, from the rear side by a sealing member (sealing member) 311. The sealing member 311 is integrally molded or fixed to the front side of the lock lever 301. As a result, the sealing member 311 is moved together with the lock lever 301, and when the lock lever 301 is in the aforementioned fixed state, the second opening 302c can be sealed. The sealing member 311 is also made of an elastic material, similar to the retaining member 309. In this stored state, even if mechanical operating noise generated from drive units such as the focus drive unit 154 inside the imaging device 1 reaches the second opening 302c by air propagation or solid propagation, the sealing member 311 can prevent it from entering the second opening 302c. This reduces the mechanical operating noise (background noise) picked up by the microphone 201, enabling the generation of good sound. When the microphone unit 200 is stored, the closure member 311 is biased toward the second opening 302c together with the lock lever 301 by the compression spring 307. As a result, the closure member 311 is pressed against the second opening 302c, allowing it to be firmly closed. Furthermore, the drive units such as the focus drive unit 154, the image stabilization drive unit 153, and the aperture 152, and the second opening 302c are arranged on opposite sides of each other via the microphone 201. This allows the second opening 302c to be kept as far away from these drive units as possible, thus contributing to the reduction of mechanical operating noise picked up by the microphone 201.

[0032] As shown in Figure 7(b), when the microphone unit 200 is in the pop-up state (when the microphone unit 200 is in the second position), the second opening 302c is exposed to the outside of the imaging device body 10. In this pop-up state, wind entering from the first opening 302b is attenuated by the porous member 310, then passes through the groove 309c, and is discharged to the outside of the imaging device body 10 from the second opening 302c. This reduces wind noise picked up as noise by the microphone 201 compared to the retracted state, enabling the generation of good sound. Also, as shown in Figure 7(b), when the imaging device 1 is viewed from the direction of arrow A (direction perpendicular to the optical axis O150), the first opening 302b and the second opening 302c are located on the same straight line (virtual line O7). This allows wind entering from the first opening 302b to be quickly released from the second opening 302c, contributing to the reduction of wind noise. In addition, in the imaging device 1, wind is not limited to entering through the first opening 302b and being discharged through the second opening 302c; the reverse is also possible. Specifically, wind may enter through the second opening 302c and be discharged through the first opening 302b. In this case as well, the wind noise collected as noise by the microphone 201 can be reduced compared to the stored state, enabling the generation of good sound. Furthermore, since the second opening 302c faces the rear side of the imaging device body 10, the intrusion of mechanical operating noise into the second opening 302c due to air propagation can be reduced. Also, in the pop-up state, the distance between the microphone unit 200 and the imaging lens 150 is greater than in the stored state, and the coupling between the microphone unit 200 and the imaging device body 10 is weakened. As a result, the levitation effect of the microphone 201 by the holding member 309 is enhanced. This reduces the transmission of mechanical operating noise generated from the focus drive unit 154 of the imaging lens 150 to the microphone 201.

[0033] As shown in Figure 7(b), in the pop-up state, the closure member 311 is retracted from the microphone unit 200 to a position that seals the second opening 302c. This prevents mechanical operating noise from being transmitted to the microphone unit 200 via the closure member 311. Preferably, the front surface of the closure member 311 and the front surface of the locking portion 301a of the lock lever 301 are located on the same plane. This prevents excessive forward protrusion of the locking portion 301a, for example, and thus allows for a thinner imaging device 1.

[0034] Figure 8 is a conceptual diagram showing the sound recorded by the microphone unit ((a) is a conceptual diagram showing the sound recorded in the retracted state, and (b) is a conceptual diagram showing the sound recorded in the pop-up state). In Figures 8(a) and 8(b), the sound 400 to be recorded is airborne sound such as the voice of the subject or photographer, or ambient sounds. Noise 401 consists of solid-borne and airborne noise, such as the drive motor noise of the focus drive unit 154 generated from the photographic lens 150 and wind noise. Microphones 201 and 202 each collect the sound 400 to be recorded, along with solid-borne and airborne noise 401. In addition, the NC microphone 210 records internal sounds generated from the imaging device body 10, such as the mechanical operation sound of the drive motor of the focus drive unit 154 generated from the photographic lens 150, mainly as solid-borne noise.

[0035] The audio processing unit 125 performs noise cancellation (NC) processing to remove the sound picked up by the NC microphone 210 and the sound corresponding to the frequency of wind noise from the sound picked up by microphones 201 and 202. Then, as shown in Figure 8(a), the audio processing unit 125 generates the NC-processed sound 402 from which the noise 401 has been removed. Although not shown in the figure, depending on the amount of noise 401 and the frequency band in which it occurs, some of the sound 400 to be recorded may be removed, or some of the noise may remain because it has not been completely processed.

[0036] In the pop-up state of the microphone unit 200, as described above, the distance between the microphone unit 200 and the imaging lens 150 increases, and the coupling between the microphone unit 200 and the imaging device body 10 weakens, enhancing the levitation effect of microphones 201 and 202. In addition, the second opening 302c of the microphone unit 200 is exposed to the outside of the imaging device body 10, allowing wind that has entered through the first opening 302b to be discharged to the outside. Microphones 201 and 202 collect noise 403 along with the audio 400 to be recorded, but noise such as mechanical operating noise generated from the imaging lens 150 is mainly transmitted through the air. Furthermore, wind noise is also reduced, so as shown in Figure 8(b), the noise 403 is less than the noise 401 in the retracted state. The audio processing unit 125 performs NC processing to remove the audio collected by the NC microphone 210 and the audio corresponding to the frequency of wind noise from the audio collected by microphones 201 and 202. The audio processing unit 125 then generates the noise-canceling (NC) processed audio 404, from which the noise 403 has been removed. In the pop-up state, the noise-canceling (NC) processed audio 404 can be generated with the noise 403 removed without compromising the audio 400 to be recorded, compared to the retracted state.

[0037] As described above, the imaging device 1 reduces both wind noise and mechanical operating noise that can become noise during recording and video recording, enabling the generation of good sound. In this embodiment, the closing member 311 is movable together with the lock lever 301, but is not limited to this, and may be fixed to the rear cover 305 (imaging device body 10), for example. In this case, the imaging device 1 is configured such that when the microphone unit 200 is in the stored state, the microphone storage section 300 is pressed against the closing member 311. This allows the closing member 311 to close the second opening 302c. In such a configuration, it is preferable that the closing member 311 is fixed in the vertical direction, which is the direction of movement of the microphone unit 200, or at an angle to the rear cover 305. On the other hand, it is preferable that the second opening 302c is open in a direction facing the closing member 311.

[0038] Although preferred embodiments of the present invention have been described above, the present invention is not limited to the embodiments described above, and various modifications and changes are possible within the scope of its gist. [Explanation of symbols]

[0039] 1. Imaging device 154 Focus drive unit 200 Microphone Units 201, 202 Microphone 300 Microphone storage compartment (case) 301 Lock lever (locking component) 302b 1st opening 302c 2nd opening 309 Retaining member 311 Closure member (sealing member)

Claims

1. The main body and The main body is provided with a drive unit that generates operating noise when driven, The microphone unit comprises a microphone, a holding member for holding the microphone, and a case for housing the microphone together with the holding member, and is movable between a first position stored inside the main body and a second position protruding outside the main body. The case has a first opening that penetrates through its interior and exterior, and a second opening that penetrates through its interior and exterior at a different location from the first opening. The retaining member has a communication portion that connects the first opening and the second opening inside the case, The first opening is exposed to the outside of the main body regardless of the position of the microphone unit, and the second opening is sealed inside the main body when the microphone unit is in the first position, and is exposed to the outside of the main body when the microphone unit is in the second position. The main body is, It is made of an elastic material and has a sealing member that seals the second opening when the microphone unit is in the first position, The microphone unit has a locking member that can be moved to take between a fixed state, which fixes the microphone unit to the first position, and a released state, which releases the fixed state. The electronic device is characterized in that the sealing member is moved together with the locking member, and seals the second opening when the locking member is in the fixed state.

2. The electronic device according to claim 1, characterized in that the opening direction of the first opening and the opening direction of the second opening are different from each other.

3. The main body has a lens barrel that can be detachably attached to it. The electronic device according to claim 2, characterized in that the opening direction of the first aperture is oriented perpendicular to the optical axis of the lens barrel, and the opening direction of the second aperture is oriented in the direction of the optical axis of the lens barrel.

4. The electronic device according to claim 3, characterized in that when viewed from a direction perpendicular to the optical axis of the lens barrel, the first aperture and the second aperture are arranged on the same straight line.

5. The electronic device according to any one of claims 1 to 4, characterized in that the second opening and the drive unit are arranged on opposite sides of each other via the microphone.

6. The holding member is cylindrical, The electronic device according to any one of claims 1 to 5, characterized in that the communication portion is composed of a groove provided on the outer circumference of the holding member.

7. The electronic device according to any one of claims 1 to 6, characterized in that the holding member is made of an elastic material.

8. The electronic device according to any one of claims 1 to 7, characterized in that the sealing member retracts from the position that seals the second opening when the microphone unit is in the second position.

9. The electronic device according to any one of claims 1 to 8, characterized in that the main body portion has a biasing member that biases the sealing member toward the second opening when the microphone unit is in the first position.

10. The electronic device according to any one of claims 1 to 7, characterized in that the sealing member is fixed to the main body.

11. The electronic device according to any one of claims 1 to 10, characterized in that the microphone is a monaural microphone or a stereo microphone.

12. The electronic device according to any one of claims 1 to 11, characterized in that it is an imaging device for capturing images.

Images