JP6682755B2 - Camera device - Google Patents

Description

  The present disclosure relates to a camera device mounted on a moving body such as a bicycle.

  In recent years, action camera devices such as cycle recorders have begun to appear on the market. When using these action camera devices, recording may be performed during movie shooting, and the demand for action camera devices with a built-in microphone is increasing.

  On the other hand, when a microphone is arranged in the housing of the camera device, if an opening is simply provided in the housing to collect sound, an airflow may enter through the opening and make a wind noise and become noise.

  Therefore, in order to prevent the airflow from entering the opening, a wind noise prevention member such as glass wool is provided as disclosed in Patent Document 1, or a protruding partition member is disclosed as disclosed in Patent Document 2. It is proposed to provide such.

JP 2012-147137 A JP, 2005-130055, A

  However, an action camera device such as a cycle recorder is used outdoors for a long time in a state where it is exposed to outside air or rain and wind. As disclosed in Patent Document 1, when glass wool is used as a wind noise prevention member, there is a possibility that the glass wool may be scattered or deteriorated by being exposed to the outside air for a long time and may not function.

  Further, as disclosed in Patent Document 2, when the partition member protruding from the housing is provided, there is a safety problem when a person touches the projecting partition member.

  The present disclosure has been made in view of the above points, and an object thereof is to provide a camera device having a microphone that has a simple and safe configuration, prevents wind noise, and has a high-quality sound collecting function. It is in.

  In order to achieve the above-mentioned object, in the technique disclosed herein, an opening for collecting sound of a microphone is provided on a vertical wall of a step portion provided in a housing of a camera device, and the opening is movable by a moving body. It is arranged so that it faces backward with respect to the direction.

  Specifically, the camera device disclosed herein is a camera device to be mounted on a moving body, and the camera device includes a housing having an opening for collecting sound and a microphone installed inside the housing. And the housing has a step portion that faces the inside of the housing on at least one of the surfaces that are substantially parallel to the moving direction of the moving body, and is arranged so as to intersect with the moving direction. The vertical wall is provided with an opening, and the opening is opened rearward in the moving direction.

  According to this configuration, it is possible to effectively use the vertical wall of the stepped portion of the housing and prevent the airflow from directly entering the sound collecting opening, so that even when used in the open air for a long time, The function of preventing wind noise collection can be stably maintained. Further, since no protrusion is provided, it is possible to ensure safety when operating or removing the camera device.

  Further, another camera device disclosed herein is a camera device to be mounted on a moving body, and the camera device is installed inside a housing having a first opening for collecting sound. The microphone includes a microphone and a cover member that covers a surface of the housing on which the microphone is arranged, and the cover member has a step portion that faces the inside of the housing on at least one of surfaces substantially parallel to a moving direction of the moving body. A second opening is provided in the vertical wall of the step portion that is provided so as to intersect with the moving direction, and the second opening is opened rearward in the moving direction. It is characterized by being

  The camera device has a plurality of microphones and a plurality of openings or second openings corresponding to the plurality of microphones, and the plurality of openings or the second openings are in a direction intersecting the moving direction of the vertical wall. It is preferable that they are provided separately from each other.

  According to this configuration, by providing the openings separately on the left and right, the sound can be collected in stereo, and even if a wind noise is generated on one side, the other microphone does not pick up the sound. it can.

  The camera device preferably has a speaker between the plurality of microphones, and has another opening corresponding to the speaker between the plurality of openings or the second opening.

  According to this structure, the voice input / output unit can be downsized by providing the speaker opening between the left and right microphone openings.

  The step portion preferably has an inclined surface provided so as to extend from the bottom portion of the vertical wall toward the surface extending in the movement direction.

  According to this configuration, by providing the inclined surface, the airflow generated during movement easily flows along the inclined surface. This makes it difficult for the airflow to flow into the opening provided on the vertical wall, and reliably prevents wind noise from being collected.

  As described above, according to the present disclosure, it is possible to prevent the microphone from picking up wind noise and realize a camera device having high-quality sound collection performance.

It is a perspective view which shows the outline of a camera apparatus. It is a disassembled structural drawing of the housing part of a camera apparatus. FIG. 3 is a perspective view showing an outline of a battery storage box to which a microphone and a speaker are attached, as seen from diagonally above and front. It is the perspective view which looked at the battery storage box of FIG. 3 from the diagonally lower front. It is the figure which looked at the battery storage box of FIG. 3 from the diagonally lower back. It is sectional drawing in the VI-VI line of FIG. It is the perspective view which looked at the deck cover from diagonally upper back. It is a cross-sectional schematic diagram which shows the flow of the airflow in the vicinity of a step part when an opening is provided in the bottom part of a step part. FIG. 6 is a schematic cross-sectional view showing the flow of airflow in the vicinity of the step portion when an opening is provided in the vertical wall of the step portion according to the embodiment. FIG. 4 is a schematic cross-sectional view showing the flow of airflow in the vicinity of the step portion when the bottom of the step portion is an inclined surface according to the embodiment.

  Hereinafter, the present embodiment will be described in detail with reference to the drawings. The following description of the preferred embodiments is merely exemplary in nature.

  In the present description, unless otherwise specified, “front” and “rear” refer to the side on which the imaging lens of the camera device is arranged and the opposite side, and “upper” and “lower” refer to the housing. The side where the opening for collecting sound is provided and the opposite side. In addition, “left and right” refers to left and right in the front-back direction with “front” as a reference.

(Structure of camera device)
FIG. 1 is a perspective view showing an outline of a camera device according to the present embodiment, and FIG. 2 is an exploded structural view of a housing part of the camera device.

  FIG. 3 is a perspective view showing an outline of a battery storage box to which a microphone and a speaker are attached according to the present embodiment, which is viewed obliquely from above and front, and FIG. 4 is a perspective view viewed from obliquely below front. 5 is a view seen from diagonally below and from the rear. FIG. 6 is a sectional view taken along line VI-VI in FIG. It has been revised along with the drawing review.

  FIG. 7 is a perspective view of the deck cover as seen obliquely from above and rear.

1 and 2, the detailed structure of the housing, the image pickup unit, and the like are omitted.
Further, in FIG. 7, illustration is omitted except for the peripheral portion of the step portion 5 a of the deck cover 5.

  The camera device 1 according to the present embodiment is attached to a moving body, for example, a running body such as a bicycle or a motorcycle or a flying body such as a drone so that the imaging lens 6 faces the moving direction.

  The camera device 1 includes an imaging lens 6 on the front surface and an operation button 7 on the upper surface. The operation button 8 is used to determine whether to turn on / off the power supply or start / stop recording. The liquid crystal monitor 9 displays information such as that recording is in progress and the charge status of the battery.

  The housing 2 of the camera device has an upper housing 3, a lower housing 4, and a deck cover 5. The upper housing 3 and the lower housing 4 are screwed and fastened to each other. Further, a deck cover 5 is attached on the upper housing 3, and the deck cover 5 is fitted in the upper housing 3. A lid 10 is provided on the rear surface of the housing 2 for opening and closing when a recording medium such as a battery or an SD card is taken in and out.

  An imaging unit (not shown), a control board 14 (see FIG. 4), and a battery storage box 30 are housed inside the housing 2.

  The image pickup unit has an image sensor (not shown) and a heat dissipation part 12 (see FIG. 6), and is provided inside the housing 2 so as to face the image pickup lens 6. The light incident on the imaging lens 6 is condensed on the imaging surface of the image sensor, and the optical signal is converted into an electric signal.

  The camera device 1 has an antenna section (not shown) and a communication board 19 on which a wireless LAN communication circuit is arranged. The antenna section is in the upper housing 3, and the communication board 19 is the battery storage box 30. Are attached to the upper surface of each.

  The antenna unit and the communication board 19 are provided to receive GPS (Global Positioning System) signals and signals from a wireless LAN and obtain position information.

  The GPS signal and the signal from the wireless LAN received by the antenna unit are processed by the communication board 19 and then recorded on the memory element or the recording medium on the control board 14 (see FIG. 4) through the flexible wiring 39. . The recorded position information is used, for example, to add moving position information and map information to the image information of the captured moving image.

  The battery storage box 30 stores therein a battery 34 such as an alkaline battery or a lithium ion battery, and electric power is supplied from the battery to each electronic component of the camera device 1.

  According to the camera device of the present embodiment, it is possible to add position information and voice or sound information by recording to a moving image taken while moving, and it is easy to remain clearly in the memory of the driver. You can get a movie that is easy to trace.

(Mark and speaker mounting structure)
As shown in FIGS. 3, 4 and 5, the battery storage box 30 has a substantially rectangular parallelepiped shape, the rear surface of the battery storage box 30 has an opening 30a, and when the lid 10 of the housing 2 is opened. Then, the battery 34 (see FIG. 2) is housed in the battery housing box 30 through the opening 30a. An external terminal (not shown) of the battery 34 is connected to a battery terminal portion 35 provided inside the front surface of the battery housing box 30. The battery terminal portion 35 supplies electric power to the control board 14 and the like from a terminal extending outside the front surface of the battery housing box 30 through a wiring (not shown).

  The control board 14 is attached to the lower surface of the battery storage box 30, and on the upper surface and the lower surface of the control board 14, a large number of electronic components 15 such as an LSI and a synchronous DRAM for processing electric signals from the image sensor, Electronic circuitry is provided. Further, the control board 14 is provided with a storage medium housing portion 16 for housing a memory card such as an SD card, and a connection terminal port 17 for exchanging a signal according to a standard such as USB with the outside.

  Further, on the upper surface of the battery housing box 30, a board mounting portion 30b for mounting the communication board 19, a microphone mounting portion 30c, and a speaker mounting portion 30d are provided. The board mounting portion 30b, the microphone mounting portion 30c, and the speaker mounting portion 30d are integrally formed of resin and configured.

  As shown in FIGS. 3 to 6, the battery housing box 30 is fastened to a metal plate member 31 placed so as to cover the upper surface thereof. Specifically, the positioning boss 30g provided in the battery housing box 30 is inserted into the positioning hole 31a provided in the metal plate material 31, and is screwed and fastened at a plurality of locations.

  The laterally extending portions 31b of the metal plate material 31 are extended to the right side surface and the left side surface of the main body portion 31 up to near the lower surface of the main body portion 31, respectively.

  As shown in FIG. 4, on the left side surface of the battery storage box 30, a plurality of wirings for fixing the wirings 37 and 38 that connect the microphone 32 and the speaker 33 to the control board 14 on the lower surface of the battery storage box 30. The fixed portion 30f is provided. Each of the wiring fixing portions 30f has a substantially annular shape with a part cut out, and the wirings 37 and 38 are sandwiched between the individual wiring fixing portions 30f so that slack and excess tension are not generated in the main body. It is fixed to the left side surface of the portion 30.

  The wiring fixing portion 30f is also integrally molded with the battery housing box 30 with resin.

(Structure of voice input / output opening)
The microphone 32 collects, for example, a voice emitted by the driver while moving or a sound from the surrounding environment, and converts vibration generated by the voice or the sound by the microphone into an electric signal. In many cases, the converted electric signal is subjected to signal processing by the electronic component 15 or the like arranged on the control board 14 and recorded in a memory element or a recording medium accommodated in the recording medium accommodating portion 16.

  The speaker 33 outputs, for example, a signal sound indicating that the battery level is low, or that the destination has been reached.

  As shown in FIG. 3 to FIG. 5, one microphone mounting portion 30c is provided on each of the left and right sides of the speaker mounting portion 30d, and a substantially cylindrical shape having an opening at the top and a part of the side surface cut out. The shape. When viewed from above, the microphone mounting portion 30c has a substantially C shape. The microphone 32 is inserted and fixed to the microphone mounting portion 30c via the annular rubber 36.

  The speaker mounting portion 30d has a shape sandwiched between two arcs when viewed from above, and the speaker 33 is mounted between the arcs. The speaker 33 is attached to the upper surface of the speaker attachment portion 30d with an adhesive such as double-sided tape. A cloth (not shown) is attached to the upper surface of the speaker 33 in order to prevent the silicone sheet, which will be described later, from rubbing and breaking the peripheral portion of the speaker 33 made of metal.

  In addition, as shown in FIGS. 4 and 6, the microphone mounting portion 30c and the speaker mounting portion 30d are integrally provided so as to project further forward than the front surface of the battery housing box 30. The speaker mounting portion 30d has reinforcing ribs 31e extending downward along the front surface of the main body portion 30 at the bottom portion thereof.

  The upper surface of the microphone 32 and the upper surface of the speaker 33 are arranged so as to be substantially flush with each other.

  By integrating the microphone mounting portion 30c and the speaker mounting portion 30d, these strengths can be improved as a whole. Further, the reinforcing rib 31e further improves the strength against external force from above. Therefore, damage when the microphone 32 and the speaker 33 are assembled can be prevented.

  The microphone mounting portion 30c and the speaker mounting portion 30d are arranged so as to project above the upper surface of the main body portion 30.

  As shown in FIG. 2, a recess 3a that faces the inside of the housing 2 is provided on the upper surface of the upper housing 3, and openings 3c and 3d are provided on the bottom 3b of the recess 3a. .

  The openings 3c are provided one by one in the left-right direction with the openings 3d interposed therebetween. Two openings 3d are provided between the plurality of openings 3c so as to be separated from each other in the left-right direction.

  The number of openings 3d may be two or more.

  The recess 3a shown in FIG. 2 is covered with a waterproof sheet (not shown) to prevent moisture such as rainwater from entering the camera device 1 from the outside. The waterproof sheet is made of, for example, silicone. By providing a plurality of openings 3d spaced apart in the left-right direction, a part of the upper housing 3 can be left between the plurality of openings 3d. If the seat hangs downward due to the entry of rainwater or the like, the seat may be torn. When the sheet hits a portion of the remaining upper housing 3, the amount of bending of the sheet can be reduced, and the sheet can be prevented from breaking.

  Further, as shown in FIGS. 6 and 7, a step portion 5a that faces the inside of the housing 2 is provided on the upper surface of the deck cover 5, and the vertical wall 5b of the step portion 5a has an opening 5c, 5d are provided respectively.

  The openings 5c are provided one by one in the left-right direction with the openings 5d interposed therebetween.

  The openings 3c and 5c are openings for collecting sound of the microphone 32, and the openings 3d and 5d are openings for output from the speaker 33.

  Further, as shown in FIG. 6, the microphone 32 attached to the microphone attaching portion 30c is arranged at a position close to the sound collecting openings 3c and 5c. Similarly, the speaker 33 attached to the speaker attachment portion 30d is arranged at a position close to the output openings 3d and 5d.

  Here, the structure of the step portion 5a will be further described.

  FIG. 8 is a schematic cross-sectional view showing the flow of air flow in the vicinity of the step when the opening is provided at the bottom of the step. FIG. 9 is a schematic cross-sectional view showing the flow of airflow in the vicinity of the step portion when an opening is provided in the vertical wall of the step portion according to the present embodiment. FIG. 10 is a schematic cross-sectional view showing the flow of airflow in the vicinity of the step portion when the bottom of the step portion is an inclined surface according to the present embodiment.

  As shown in FIGS. 9 and 10, the vertical wall 5b is provided on the front surface side of the step portion 5a so as to be substantially orthogonal to the front-rear direction, and the openings 5c and 5d face rearward. ing.

  Further, as shown in FIGS. 6, 7 and 10, the bottom of the step portion 5a is an inclined surface provided so as to extend from the bottom of the vertical wall 5b toward the upper surface of the deck cover 5.

  The inclined surface is a linear flat surface when viewed from the left and right direction.

  Note that, as shown in FIG. 9, the bottom portion of the step portion 5a may be substantially orthogonal to the vertical wall 5b.

(Operation and effect in this embodiment)
Next, the function and effect of this embodiment will be described with reference to FIGS. 8 to 10.

  In the present embodiment, since the moving body moves toward the front of the camera device 1, the moving airflow flows from the front toward the rear of the camera device 1. Therefore, the vertical wall 5b is arranged substantially orthogonal to the moving direction.

  At this time, the moving airflow flows along the upper surface of the deck cover 5, while at the step portion 5a, a part of the airflow flows toward the bottom portion of the step portion 5a.

  As shown in FIG. 8, when the opening 5c is provided at the bottom of the step portion 5a, the airflow flowing toward the bottom flows into the opening 5c. At this time, a wind noise is generated in the vicinity of the opening 5c, and if the microphone 32 picks up the noise, it becomes noise, and the sound collection quality of the microphone 32 deteriorates.

  On the other hand, as shown in FIG. 9, when the vertical wall 5b of the step portion 5a is provided with the opening 5c, the airflow flowing toward the bottom of the step portion 5a does not directly hit the vertical wall 5b.

  Further, due to the influence of the airflow flowing in the moving direction (front-back direction), a negative pressure is generated in the vicinity of the vertical wall 5b with respect to the atmosphere above the deck cover. From the above, the airflow can be suppressed from flowing into the opening 5c. Therefore, the generation of wind noise can be prevented, and the sound collection quality of the microphone 32 is improved.

  In the structures shown in FIGS. 8 and 9, depending on the relationship between the height H of the vertical wall 5b and the length L of the bottom portion, for example, when the airflow collides with the rear side or the left and right vertical walls, Turbulence may be generated in the step portion 5a and flow into the opening 5c.

  Therefore, as shown in FIG. 10, if the opening 5c is provided in the vertical wall 5b of the stepped portion 5a and the bottom of the stepped portion 5a is formed as an inclined surface facing upward, the vertical wall on the rear side can be eliminated. There is no airflow collision at. In addition, the area of the left and right vertical walls is also reduced, and the frequency of air flow collisions on these is reduced. Furthermore, since the moving airflow comes to flow upward along the inclined surface, it is possible to more reliably prevent the airflow from flowing into the opening 5c and the wind noise caused thereby.

  As described above, according to the present embodiment, the sound collection opening 5c of the microphone 32 is formed in the direction crossing the moving direction of the vertical wall of the step portion 5a facing the inside of the housing 2. By providing the vertical wall 5b arranged on the moving side (front side) of the moving body, it is possible to prevent the moving airflow from flowing into the opening 5c. As a result, the generation of wind noise near the opening is suppressed, and high-quality sound with less noise can be collected by the microphone 32.

  Since the sound collection quality of the microphone 32 is improved, the moving image captured while moving can be comfortably watched when the moving image is reproduced and viewed later. Also, sound information other than the voice recorded during shooting can be saved in a high-quality state with less noise.

  Further, since the sound collecting opening 5c is provided in the step portion 5a directed inward from the upper surface of the deck cover 5, the partition member of the air flow is prevented from protruding to the outside of the housing, and a person collects the sound. It is safe even if it touches the vicinity of the portion 5c.

  Further, by providing the sound collecting openings 5c with the output opening 5 of the speaker 33 interposed therebetween in the left-right direction, stereo sound collection is possible and at the same time, a wind noise is generated from one of the openings. Even if you pick up, you can avoid picking up that sound from the other opening. As a result, it is possible to prevent the sound collection quality from deteriorating.

  Further, the speaker 33 and the microphone 32 can be arranged close to each other, and the audio input / output unit can be downsized.

  In the present embodiment, the vertical wall 5b is provided so as to be substantially orthogonal to the moving direction (front-back direction), but the vertical wall 5b may be provided at a position that intersects the moving direction at an angle. It suffices that it is provided so as to avoid the position where the air flow therein flows directly into the opening 5c.

  Further, in the present embodiment, the inclined surface at the bottom of the step portion 5a is a flat surface that extends linearly when viewed in the left-right direction, but it is a curved surface that is convex upward when viewed in the left-right direction. Good. The latter curved shape increases the strength against external force from above.

  Although the voice input / output opening is provided on the upper surface of the housing 2 in the present embodiment, it may be provided on the right side surface, the left side surface, or the lower surface of the housing 2.

  In that case, the positions of the openings 3c and 3d and the positions of the microphone 32 and the speaker 33 also change according to the positions 5c and 5d of the openings.

  When the openings 5c and 5d are provided on the lower surface of the camera device 1, the deck cover 5 may be attached to the lower surface of the lower housing 4. The openings 3c and 3d may be provided in the lower housing.

  Further, the microphone 32 and the speaker 33 may be attached to the lower surface of the battery housing box 30.

  When the openings 5c and 5d are provided on the right side surface or the left side surface of the camera device 1, the deck cover 5 may be attached to the right side surface or the left side surface of the housing 2.

  Alternatively, the sound coming from the opening 5c may be directly collected by the microphone 32 without providing the openings 3c and 3d. The sound output from the speaker 33 may be directly output from the opening 5d.

  When the stereoscopic sound collection is performed by providing the opening 5c on the right or left side of the camera device 1, the two openings 5c and 5c are arranged side by side in the vertical direction. The output opening 5d of the speaker 33 may be arranged between the two openings 5c and 5c, and the openings 5c and 5d may be arranged vertically. The same applies to the positional relationship between the two openings 3c, the positional relationship between the openings 3c and 3d, the positional relationship between the two microphones 32, and the positional relationship between the microphones 32 and the speakers 33.

  In the present embodiment, the battery storage box 30, the microphone mounting portion 30c, and the speaker mounting portion 30d are integrally molded of resin, but the microphone mounting portion 30c, the speaker mounting portion 30d, and the battery storage portion It may be provided separately from the box 30.

  Although the communication board 19 is arranged on the upper surface of the battery storage box 30, it may be attached to the upper housing 3.

  Further, although the wire fixing portion 30f is provided on the left side surface of the battery housing box 30, it may be provided on the right side surface.

  The number of operation buttons 7 is not limited to this embodiment, and may be more or less.

  It should be noted that the camera device according to the present embodiment is not limited to the application mounted on a bicycle, a motorcycle, a drone, or the like, and may be used for other digital cameras.

  The present disclosure prevents the collection of wind noise by providing a sound collecting opening in a vertical wall that is arranged in a direction that intersects the moving direction of a step portion that faces the inside of the housing of the camera device. Therefore, it is useful when applied to a camera device such as a cycle recorder mounted on a moving body.

1 camera device 2 housing 3 upper housing 3c sound collecting opening 3d speaker output opening 4 lower housing 5 deck cover 5a step 5b vertical wall 5c sound collecting opening 5d speaker output opening 30 battery storage Box 30c Microphone mounting part 30d Speaker mounting part 31 Metal plate 32 Microphone 33 Speaker

Claims (5)

A camera device to be mounted on a moving body,
The camera device includes a housing having an opening for collecting sound,
A microphone installed inside the housing,
The housing has a step portion that faces the inside of the housing on at least one of the surfaces substantially parallel to the moving direction of the moving body,
The opening is provided in a vertical wall of the step portion, which is arranged so as to intersect with the moving direction,
The camera device, wherein the opening is open rearward in the moving direction. A camera device to be mounted on a moving body,
The camera device includes a housing having a first opening for collecting sound,
A microphone installed inside the housing,
A cover member that covers a surface of the housing on which the microphone is arranged,
The cover member has a step portion facing the inside of the housing on at least one of the surfaces substantially parallel to the moving direction of the moving body,
A second opening is provided on a vertical wall of the step portion that is arranged so as to intersect with the moving direction,
The camera device, wherein the second opening is open rearward in the moving direction. The camera device has a plurality of the microphones and a plurality of the openings or the second openings corresponding to the plurality of the microphones,
The camera device according to claim 1, wherein the plurality of openings or the second openings are provided separately from each other in a direction intersecting the movement direction of the vertical wall. The camera device has a speaker between the plurality of microphones,
The camera device according to claim 3, wherein another opening corresponding to the speaker is provided between the plurality of openings or the second opening.   5. The camera device according to claim 1, wherein the step portion has an inclined surface provided so as to extend from a bottom portion of the vertical wall toward a surface substantially parallel to the movement direction.