JP2007194708A - Camera and electronic equipment - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a camera that can prevent sounds produced inside a body from being delivered to a microphone, and to provide electronic equipment. <P>SOLUTION: An opening 122 of a microphone rubber 120 is provided with a tapered face 124, whereby the inner diameter of the opening 122 is greater toward a front cover 200. A bottomed cylindrical microphone rubber press contact part 210 projected backwardly is provided to an inner face of a front cover 200. When the front cover 200 is fitted to a body 100, a bottom 212 of the microphone rubber press contact part 210 enters inside of the opening 122 of the microphone rubber 120, and a curved part 214 is pressed into contact with the tapered face 124 to press the tapered face 124. The microphone rubber press contact part 210 is abutted against the entire circumference of the inner circumferential face of the opening 122. Since the sounds, produced inside a camera 1 such as operation sound of a lens drive mechanism 102, are shut off by the microphone rubber 120 and the microphone rubber press contact part 210, the sound will not reach a sound collecting face 111 of a microphone 110. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a camera and an electronic device provided with a microphone.

  There is known an electronic device in which a microphone holder that holds a microphone is attached in contact with a housing of the electronic device (see Patent Document 1).

Japanese Patent Laid-Open No. 10-285259

  However, in a conventional electronic device, if a microphone and a microphone holder are disposed on the curved surface portion of the housing, a gap may be formed at a contact portion between the microphone holder and the housing. Therefore, the sound generated inside the casing is transmitted to the microphone through this gap and collected.

(1) A camera according to a first aspect of the present invention includes an imaging optical system, a driving mechanism for the imaging optical system, a microphone, and an elastic material. The camera has an opening in front of the sound collection surface of the microphone and holds the microphone. A microphone holding member and a molded portion that is provided on the inner surface of the body and contacts the inner peripheral surface of the opening.
(2) According to a second aspect of the present invention, in the camera according to the first aspect, the molded portion abuts over the entire circumference on the inner peripheral surface side of the opening.
(3) The invention according to claim 3 is the camera according to claim 1, further comprising pressing means for pressing the microphone holding member holding the microphone toward the molding portion.
(4) According to a fourth aspect of the present invention, in the camera according to the first aspect, the microphone holding member has a holding member side abutting portion formed such that the diameter of the opening portion increases toward the body side. The holding member side contact portion is in contact with the molded portion.
(5) According to a fifth aspect of the present invention, in the camera according to the first aspect, the molded part has a body side abutting part formed so that the outer diameter decreases toward the microphone holding member side, The side abutting portion abuts on the microphone holding member.
(6) According to a sixth aspect of the present invention, in the camera according to the first aspect, the microphone holding member includes a deformation promoting portion formed so as to promote deformation near the opening when the microphone holding member comes into contact with the molded portion. It is characterized by having.
(7) An electronic device according to a seventh aspect of the present invention includes a microphone and an elastic material, and has an opening on the front surface of the sound collection surface of the microphone, and is provided on a microphone holding member that holds the microphone and an inner surface of the body. And a molding part that abuts on the inner peripheral surface side of the opening.
(8) According to an eighth aspect of the present invention, in the electronic device according to the seventh aspect, the molded portion abuts over the entire circumference on the inner peripheral surface side of the opening.
(9) The electronic device according to claim 7, further comprising pressing means for pressing the microphone holding member holding the microphone toward the molded portion.
(10) In the electronic device according to claim 7, the microphone holding member has a holding member side abutting portion formed so that the diameter of the opening increases toward the body side. The holding member side contact portion is in contact with the molding portion.
(11) According to an eleventh aspect of the present invention, in the electronic device according to the seventh aspect, the molded part has a body side abutting part formed so that the outer diameter decreases toward the microphone holding member side, The body-side contact portion is in contact with the microphone holding member.
(12) According to a twelfth aspect of the present invention, in the electronic device according to the seventh aspect of the present invention, the microphone holding member is formed so that the deformation in the vicinity of the opening is promoted when coming into contact with the molded portion. It is characterized by having.

  According to the present invention, it is possible to prevent sound generated inside the body from being transmitted to the microphone and collected.

  With reference to FIGS. 1-4, one Embodiment of the camera and electronic device by this invention is described. In the present embodiment, the front, rear, left, right, and up and down directions are defined as described in each drawing. FIG. 1 is a diagram illustrating a front cover and an internal structure of a camera as an example of an electronic apparatus. The camera 1 includes a main body unit 100 and a front cover 200 attached to the main body unit 100. The camera 1 also includes a rear cover attached to the rear portion of the main body 100, but the description thereof is omitted in FIG.

  The main body 100 includes a lens barrel 101 that holds a lens for capturing a subject image, a lens driving mechanism 102 that drives a lens held by the lens barrel 101 for focusing and focal length change, A control board 103 for controlling each part of the camera 1 is provided. In addition, the main body 100 is provided with a microphone 110 for recording a sound together with a subject image and a microphone rubber 120 for holding the microphone 110.

  FIG. 2 is a cross-sectional view of the microphone 110 and the microphone rubber 120. The microphone 110 is a substantially cylindrical capacitor microphone. The microphone 110 is provided with a sound collecting surface 111 on one end face and a terminal 112 for outputting an audio signal on the other end face. One end of a cord 113 is connected to the terminal 112. The other end of the cord 113 is connected to the control board 103.

  The microphone rubber 120 is a substantially bottomed cylindrical member having one end opened and the other end closed, and is substantially axisymmetric with respect to the axis AX1. The microphone rubber 120 is made of rubber. The microphone rubber 120 includes a microphone holding part 121 that holds the microphone 110, an opening 122 in front of the microphone holding part 121, and a cord lead part 128 provided on the other end side.

  The microphone holding portion 121 is a groove-like portion provided on the inner peripheral surface of the microphone rubber 120 and holds the outer periphery of the substantially columnar microphone 110. The opening 122 is a space from the front end face of the microphone holding part 121 to the opening end face of the microphone rubber 120. The opening 122 has a cylindrical inner surface portion 123 having a constant inner diameter along the front-rear direction, and a tapered surface 124 that has a conical shape with an inner diameter increasing from the front end of the cylindrical inner surface portion 123 toward the front.

  The microphone 110 is held by the microphone holding unit 121 with the sound collection surface 111 facing the opening 122 of the microphone rubber 120. The cord 113 is drawn out of the microphone rubber 120 from the cord drawing portion 128.

  The microphone rubber 120 is attached to the microphone rubber attachment part 130 of the main body part 100. The microphone rubber attaching part 130 is provided in the lower front of the main body part 100 and in the vicinity of the lower right of the lens barrel 101. When the microphone rubber 120 is attached to the microphone rubber attachment portion 130, the sound collection surface 111 of the microphone 110 faces the front of the main body 100, and the axis AX1 of the microphone rubber 120 is parallel to the front-rear direction of the main body 100.

  The front cover 200 is a member obtained by processing a metal plate by drawing or the like, and is attached to the front portion of the main body 100 to constitute a part of the body (exterior) of the camera 1. The front cover 200 is provided with a lens barrel opening 201 and a microphone rubber contact portion 210. The appearance of the front cover 200 has a curved shape that inclines backward as the vicinity of the front lower portion 202 goes downward. The inner surface of the front cover 200 has a curved shape that inclines toward the rear as the vicinity of the front lower portion 202 moves downward, following the appearance.

  The lens barrel opening 201 is an opening that allows the lens barrel 101 to extend forward of the camera 1. When the front cover 200 is attached to the main body portion 100, the front-rear direction and the vertical and horizontal directions of the front cover 200 coincide with the front-rear direction and the vertical and horizontal directions of the main body portion 100.

  FIG. 3 is a cross-sectional view of the vicinity of the front lower portion 202 including the microphone rubber contact portion 210 when viewed from the left side. The microphone rubber contact portion 210 is a molding portion provided inside the front lower portion 202 so as to protrude rearward, and has a substantially bottomed cylindrical shape with the axis AX2 as the central axis. The microphone rubber contact portion 210 includes a cylindrical portion 211 corresponding to a cylindrical portion of a bottomed cylinder having an axis AX2 as a central axis, and a bottom portion 212 provided at the rear end of the cylindrical portion 211 and corresponding to the bottom portion of the bottomed cylinder. Have The bottom portion 212 is provided with a hole 213 that penetrates the bottom portion 212 in the front-rear direction.

  The axis AX2 is parallel to the front-rear direction of the front cover 200. Therefore, the cylindrical portion 211 extends parallel to the front-rear direction of the front cover 200. The bottom 212 is perpendicular to the front-rear direction of the front cover 200. When the front cover 200 is attached to the main body 100, the axis AX2 coincides with the axis AX1.

  FIG. 4 is a cross-sectional view of the vicinity of the front lower portion 202 including the microphone rubber contact portion 210 when viewed from the left side when the front cover 200 is attached to the main body portion 100. When the front cover 200 is attached to the main body 100, the bottom 212 of the microphone rubber contact portion 210 enters the inside of the opening 122 of the microphone rubber 120, and a curved portion (curved portion) 214 from the cylindrical portion 211 to the bottom 212 is a tapered surface. Abut against 124 and press.

  As a result, the tapered surface 124 is elastically deformed and is in close contact with the curved portion 214 over the entire circumference of the tapered surface 124 in the circumferential direction. That is, the microphone rubber contact portion 210 contacts over the entire circumference of the inner peripheral surface of the opening 122. The space that the sound collection surface 111 faces communicates with the space outside the front cover 200 through the hole 213, but the space inside the front cover 200 and outside the microphone rubber 120 is Spatially insulated.

  For example, when a moving image is taken together with sound by the camera 1, a focusing operation is performed according to the movement of the subject, so that the lens driving mechanism 102 operates to generate an operating sound. In addition, even when the photographer is instructed to change the focal length while shooting a moving image, the lens driving mechanism 102 operates to generate an operating sound. Sound generated inside the camera 1, such as the operating sound of the lens driving mechanism 102, is blocked by the microphone rubber 120 and the microphone rubber contact portion 210, and thus does not reach the sound collection surface 111 of the microphone 110. Note that the sound outside the camera 1 reaches the sound collection surface 111 of the microphone 110 through the hole 213 and is collected by the microphone 110. Thereby, since the sound generated inside the camera 1 can be prevented from being recorded, the recorded sound can be improved in sound quality.

  Note that the microphone rubber 120 has a substantially bottomed cylindrical shape with the axis AX1 as the central axis, and the microphone rubber contact portion 210 has a substantially bottomed cylindrical shape with the axis AX2 as the central axis. Therefore, even if the microphone rubber 120 is attached to the microphone rubber attachment portion 130 at an arbitrary phase centered on the axis AX1, the microphone rubber contact portion 210 contacts the entire circumference of the inner peripheral surface of the opening 122, and the contact The state never changes. Accordingly, when attaching the microphone rubber 120 to the microphone rubber attachment portion 130, it is not necessary to consider the phase around the axis AX1 of the microphone rubber 120, and the microphone rubber 120 can be easily attached to the microphone rubber attachment portion 130. Assembling costs can be reduced.

The camera 1 described above has the following operational effects.
(1) The microphone rubber contact portion 210 is configured to contact the inner peripheral surface of the opening 122. Therefore, the microphone rubber contact portion 210 and the microphone rubber 120 can be contacted without being affected by the curved surface shape in the vicinity of the front lower portion 202, and thus generated inside the camera 1 such as an operating sound of the lens driving mechanism 102. Can be blocked by the microphone rubber 120 and the microphone rubber contact portion 210. Thereby, since the sound generated inside the camera 1 can be prevented from being recorded, the recorded sound can be improved in sound quality.

(2) The microphone rubber contact portion 210 and the inner peripheral surface of the opening portion 122 are configured to contact over the entire circumference of the inner peripheral surface of the opening portion 122. Thereby, since there is no gap between the microphone rubber 120 and the microphone rubber contact portion 210, the recorded sound can be reliably improved in sound quality.

(3) When the front cover 200 is attached to the main body portion 100, the curved portion 214 of the microphone rubber contact portion 210 is configured to contact and press against the tapered surface 124. Thereby, since the microphone rubber 120 and the microphone rubber contact portion 210 can be contacted only by attaching the front cover 200 to the main body portion 100, the assembly of the camera 1 can be facilitated.

(4) The opening 122 of the microphone rubber 120 is configured to be provided with a tapered surface 124 whose inner diameter increases toward the front cover 200. Therefore, only by attaching the front cover 200 toward the main body 100 from the front, the microphone rubber contact portion 210 contacts the entire circumference of the inner peripheral surface of the opening 122. Thereby, since the structure of the microphone rubber 120 and the microphone rubber contact part 210 can be simplified, the manufacturing cost of the camera 1 can be reduced.

---- Modified example ---
(1) In the above description, the tapered surface 124 is provided at one end of the microphone rubber 120 on the opening side. That is, the inner surface in the vicinity of the end face of the cylinder having a constant outer shape is formed in a tapered shape, but the present invention is not limited to this. For example, as shown in FIG. 5, a cylindrical portion (small-diameter cylindrical portion) 125 having a small outer diameter extends from the opening-side end portion of the microphone rubber 120, and a tapered surface 124 is provided in the vicinity of the opening-side end surface of the small-diameter cylindrical portion 125. May be. Thus, by reducing the thickness in the radial direction of the microphone rubber 120 in the vicinity of the taper surface 124, elastic deformation in the vicinity of the taper surface 124 can be promoted when the microphone rubber contact portion 210 is in contact. Thereby, since the contact part of the microphone rubber 120 and the microphone rubber contact part 210 comes into close contact, the sound generated inside the camera 1 can be surely blocked by the contact part.

(2) In the above description, the tapered surface 124 is provided on the microphone rubber 120 so that the diameter of the opening increases toward the front cover 200 side, but the present invention is not limited to this. For example, as shown in FIG. 6, the microphone rubber contact portion 210 may be formed so that the outer diameter decreases toward the microphone rubber 120 side. That is, with the axis AX2 as the central axis, the microphone rubber contact portion 210 has a conical tapered cylindrical portion 215 whose outer diameter decreases toward the rear, and a bottom portion 212 provided at the rear end of the tapered cylindrical portion 215. May be formed. Thereby, since the outer peripheral surface of the taper cylindrical part 215 is contact | abutted over the perimeter of the inner peripheral surface of the opening part 122, there exists an effect similar to the above-mentioned case. In the case where the tapered cylindrical portion 215 is provided, the tapered surface 124 described above may not be provided in the opening 122 of the microphone rubber 120 as shown in FIG.

(3) In the above description, the microphone 110 is a condenser microphone, but the present invention is not limited to this, and may be another type of microphone such as a dynamic microphone.

(4) In the above description, the material of the microphone rubber 120 is rubber, but it may be an elastic material that is elastically deformed by an external force. For example, it may be a gel material or a soft plastic. Also, a sponge-like material may be used.

(5) In the above description, the front cover 200 is a member obtained by processing a metal plate by drawing or the like, but the present invention is not limited to this. For example, the front cover 200 may be manufactured by a processing method other than drawing, such as manufacturing the front cover 200 by metal cutting. The material of the front cover 200 is not limited to metal, and may be resin or the like.

(6) In the above description, the microphone 110 and the microphone rubber 120 are disposed so that the sound collection surface 111 faces forward, that is, in the same direction as the subject side of the lens barrel 101. However, the microphone 110 has no directivity. For example, the microphone 110 and the microphone rubber 120 may be disposed so that the sound collection surface 111 faces upward or sideward. Further, the above-described microphone, microphone rubber 120, microphone rubber contact portion 210, and the like may be provided at two locations on the left and right sides so that stereo recording can be performed.
(7) You may combine each embodiment and modification which were mentioned above, respectively.

  The present invention is not limited to the embodiment described above, and a microphone, a microphone holding member made of an elastic material that has an opening on the front surface of the sound collection surface of the microphone and holds the microphone, and a body And an electronic device having various structures provided with a molded portion that is provided on the inner surface of the opening and abuts on the inner peripheral surface side of the opening.

It is a figure which shows the front part cover and internal structure of the camera. It is sectional drawing of the microphone 110 and the microphone rubber | gum 120. FIG. It is sectional drawing when the vicinity of the front lower part 202 containing the microphone rubber contact part 210 is seen from the left side. FIG. 6 is a cross-sectional view of the vicinity of the front lower portion 202 including the microphone rubber contact portion 210 when viewed from the left side when the front cover 200 is attached to the main body portion 100. It is a figure which shows a modification. It is a figure which shows a modification.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Camera 100 Main body part 101 Lens barrel 102 Lens drive mechanism 110 Microphone 111 Sound collecting surface 120 Microphone rubber 122 Opening part 124 Tapered surface 125 Small diameter cylindrical part 200 Front cover 210 Microphone rubber contact part 214 Curved part 215 Tapered cylindrical part

Claims (12)

An imaging optical system;
A drive mechanism of the imaging optical system;
With a microphone,
A microphone holding member that is made of an elastic material, has an opening on the front surface of the sound collection surface of the microphone, and holds the microphone;
A camera comprising: a molding portion provided on an inner surface of the body and abutting on an inner peripheral surface side of the opening portion. The camera of claim 1,
The said shaping | molding part contact | abuts over the perimeter of the inner peripheral surface side of the said opening part, The camera characterized by the above-mentioned. The camera of claim 1,
The camera further comprising pressing means for pressing the microphone holding member holding the microphone toward the forming portion. The camera of claim 1,
The microphone holding member has a holding member side abutting portion formed so that the diameter of the opening increases toward the body side, and abuts on the molding portion at the holding member side abutting portion. Camera characterized by. The camera of claim 1,
The molded part has a body side contact part formed so that an outer diameter decreases toward the microphone holding member side, and contacts the microphone holding member at the body side contact part. Camera. The camera of claim 1,
The camera according to claim 1, wherein the microphone holding member includes a deformation promoting portion formed so as to promote deformation near the opening when the microphone holding member comes into contact with the forming portion. With a microphone,
A microphone holding member that is made of an elastic material, has an opening on the front surface of the sound collection surface of the microphone, and holds the microphone;
An electronic apparatus comprising: a molding portion provided on an inner surface of the body and abutting on an inner peripheral surface side of the opening portion. The electronic device according to claim 7,
The electronic device according to claim 1, wherein the molded portion is in contact with the entire circumference on the inner peripheral surface side of the opening. The electronic device according to claim 7,
An electronic apparatus further comprising pressing means for pressing the microphone holding member holding the microphone toward the molding portion. The electronic device according to claim 7,
The microphone holding member has a holding member side abutting portion formed so that the diameter of the opening increases toward the body side, and abuts on the molding portion at the holding member side abutting portion. Electronic equipment characterized by The electronic device according to claim 7,
The molded part has a body side contact part formed so that an outer diameter decreases toward the microphone holding member side, and contacts the microphone holding member at the body side contact part. Electronic equipment. The electronic device according to claim 7,
2. The electronic apparatus according to claim 1, wherein the microphone holding member has a deformation promoting portion formed so as to promote deformation near the opening when the microphone holding member comes into contact with the forming portion.

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