JP2018037499A - Housing for electronic apparatus and imaging device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a housing for electronic apparatus having a waterproof function and a microphone function, capable of achieving higher impact resistance.SOLUTION: The housing for electronic apparatus, provided with a microphone inside the housing, includes: a recessed part formed on a surface of the housing; an opening part formed in the recessed part and serving as a sound hole of the microphone; and a first rib surrounding the periphery of the opening part and erected in the recessed part. The first rib does not project from the surface of the housing.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a housing of an electronic device that is installed and used outdoors, and more particularly to a structure of a housing of an outdoor surveillance camera with improved impact resistance.

  2. Description of the Related Art Conventionally, surveillance cameras installed and used outdoors are provided with waterproof performance because they are used by being exposed to wind and rain. Some surveillance cameras are also equipped with impact resistance that can withstand vandalism by suspicious individuals. In addition, some other surveillance cameras are equipped with a microphone that collects ambient environmental sounds. The microphone is arranged inside the camera, and a sound hole for passing sound is provided in front of the microphone. In a surveillance camera that is fixed outdoors and has a built-in microphone, rainwater adheres to the surface of the camera enclosure due to rain, etc., and the rainwater closes the sound hole of the microphone. There was a problem that sound quality deteriorated.

  In order to solve the above problems, Patent Document 1 discloses a housing structure of an electronic device in which a rib is formed around a sound hole portion.

Utility Model Registration No. 2538037

  However, in the case structure of the electronic device represented by the above-mentioned Patent Document 1, since the rib protrudes from the case, it is easy to be hit by a suspicious person. There was a problem that the load was concentrated and the internal structure was easily damaged.

A housing of an electronic device provided with a microphone inside a housing,
A recess provided on the surface of the housing;
An opening which is provided in the recess and is a sound hole of the microphone;
Surrounding the periphery of the opening, consisting of a first rib erected in the recess,
The casing of the electronic device, wherein the first rib does not protrude from the surface of the casing.

  In the case structure of an electronic device having a waterproof function and a microphone function, higher impact resistance can be provided.

A perspective view and an enlarged view of a dome type surveillance camera in an embodiment of the present invention The disassembled perspective view of the dome shape surveillance camera in embodiment of this invention Sectional drawing and enlarged view of a dome type surveillance camera in an embodiment of the present invention The perspective view and enlarged view of the dome type surveillance camera in the 1st modification of this invention The perspective view and enlarged view of the dome type surveillance camera in the 2nd modification of this invention

  Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings and FIGS. FIG. 1 is a perspective view of a dome-type surveillance camera 10 according to the present embodiment, and the right figure in FIG. 1 is an enlarged view of a portion A.

  The dome cover 101 is a transparent or translucent plastic cover member. The upper cover 102 and the lower cover 103 are metal cover members, for example, made of aluminum die casting. The dome cover 101, the upper cover 102, and the lower cover 103 are a housing of the surveillance camera. The upper cover 102 has a microphone sound hole 154. Details of the structure around the microphone will be described later.

  FIG. 2 is an exploded perspective view of the dome type surveillance camera 10 according to the present embodiment. FIG. 3 is a cross-sectional view and an enlarged view of the dome type surveillance camera 10 in the present embodiment.

  The dome holder 106 is fixed to the upper cover 102 with a screw or the like. A dome cover 101 and a waterproof rubber 105 are disposed between the dome holder 106 and the upper cover 102. The waterproof rubber 105 is a waterproof member between the dome cover 101 and the upper cover 102. The upper cover 102 is attached to the lower cover 103 with screws 107. A waterproof rubber 104 is arranged between the upper cover 102 and the lower cover 103. The waterproof rubber 104 is a waterproof member between the upper cover 102 and the lower cover 103.

  The lower cover 103 supports the main base 111 and the main electric board 113 with bosses (not shown) and is fixed with screws (not shown). Further, the bottom surface of the lower cover 103 is provided with an attachment structure (not shown) for fixing to an installation place such as a ceiling or a wall. The cover 112 is fixed to the main base 111 with screws or the like (not shown). A microphone unit 150 is formed between the main base 111 and the cover 112.

  The main base 111 holds the pan rotation unit 120 so that the pan rotation is possible. The pan rotation unit 120 holds the camera unit 130 in a tiltable manner. In other words, the camera unit 130 is capable of pan rotation and tilt rotation. The camera unit 130 includes a lens (not shown), an image sensor (not shown), and the like, and shoots a shooting target and generates a video signal. The camera unit 130 is disposed in the dome cover, and corresponds to an imaging unit in the present invention. The camera unit 130 is connected to the main electric board 113 by a transmission cable (not shown), and a video signal generated by the camera unit 130 is transmitted to the main electric board 113 through the transmission cable.

  The main electric board 113 processes the transmitted video signal and performs compression coding processing on the processed video signal. Further, the main electric board 113 distributes the video signal subjected to the compression encoding process to an external camera control device via a network, for example. In addition, although the main electric board 113 in this embodiment shall be comprised with one board | substrate, it is not restricted to this. For example, the main electric board 113 may be configured by two or more boards.

  The microphone 153 collects environmental sounds around the camera. The microphone 153 is held by a microphone holder 152. The microphone holder 152 is made of an elastic member such as rubber. By constituting the elastic member, the transmission of vibration to the microphone 153 is reduced. The microphone holder 152 holding the microphone 153 is disposed between the main base 111 and the cover 112. The microphone 153 is connected to the main electric board 113 by a transmission cable (not shown), and the audio signal generated by the microphone 153 is transmitted to the main electric board 113 through the transmission cable.

  A sound hole 154 is provided near the microphone 153 of the upper cover 101. The sound hole 154 is an opening formed in the upper cover 102. The sheet 151 is attached to the upper cover 102 with a double-sided tape (not shown). The sheet 151 is a porous film or a rubber thin film, prevents water from entering and allows sound to pass through. The sheet 151 is affixed so as to block the entry of water from the sound hole 154. The microphone holder 152 is pressed so that the sheet 151 does not peel off. Since the sound hole 154 is empty in the upper cover 102 and the sheet 151 allows sound to pass therethrough, the microphone 153 can collect sound around the camera.

  The concave portion 155 has a concave shape provided in the upper cover 102. The rib 161 has a rib shape that is provided inside the recess 155 and is erected toward the outside of the housing. The rib 161 is formed so as to surround the sound hole 154. The rib 161 corresponds to a first rib. The rib 161 is integrally formed with the upper cover 102. The rib 161 does not protrude from the housing surface S near the recess 155 of the upper cover 102.

  The dome type surveillance camera 10 is used by being installed on a wall surface. If the camera is installed on an outdoor wall, rainwater may adhere to the enclosure during rain. Rainwater adhering to the surface of the enclosure flows down along the alternate long and short dash line in FIG. 1 along the surface of the enclosure. The rainwater that adheres to the upper part of the microphone unit 150 and flows to the inside of the recess 155 is restricted by the rib 161 when it comes around the sound hole 154. Since the rainwater flowing on the surface of the enclosure does not block the sound hole 154, the rib 161 reduces sound quality deterioration during rainfall.

  Moreover, since the rib 161 does not protrude from the housing surface S, it is difficult to be hit even when struck by a suspicious person or the like. If the rib is projected many times, the load concentrates at the same location. However, in the case of the configuration of the present invention, the load does not concentrate around the microphone unit 150, so that the impact resistance of the camera is improved. Can do.

  The rib 161 is formed in a substantially annular shape. When formed in a substantially annular shape, rainwater easily flows around the rib 161. In addition, when formed in a substantially annular shape, it becomes difficult for rainwater adhering to the housing to enter the sound hole 154. Therefore, the annular shape of the rib 161 contributes to a reduction in sound quality deterioration during rainfall.

  The rib 161 is formed away from the sound hole 154. The surface constituting the inner wall of the rib 161 and the surface constituting the sound hole 154 are separate surfaces. A bottom surface of the recess is formed between the surface constituting the inner wall of the rib 161 and the surface constituting the sound hole 154. When the rib 161 is separated from the sound hole 154, the length of the sound hole 154 is shortened. When the length of the sound hole 154 is shortened, the sound reverberation in the sound hole 154 is reduced, which contributes to a reduction in sound quality deterioration.

  The thickness of the surface of the upper cover 102 and the inner wall surface of the upper cover is T1. The thickness of the inner surface of the recess 155 and the inner wall surface of the upper cover is T2. The thickness T1 of the upper cover 101 and the thickness T2 of the recess are configured to satisfy T1> T2. By setting T1> T2, the length of the sound hole 154 is shortened, which contributes to a reduction in sound quality deterioration.

  Subsequently, a first modification of the present invention will be described with reference to FIG. Here, FIG. 4 is a perspective view of the dome type surveillance camera 10 in the first modified example of the present invention, and the right view of FIG. 4 is an enlarged view of a B portion. In this modification, the same reference numerals are given to the same elements as those corresponding to the above-described embodiment, and the description thereof is omitted.

  The rib 261 is provided in the recess and has a rib shape erected toward the outside of the housing. The rib 261 corresponds to a first rib. The rib 261 does not protrude from the housing surface S of the upper cover 202. Rainwater adhering to the surface of the enclosure flows down along the surface of the enclosure along the alternate long and short dash line in FIG. When the rainwater adhering to the upper part of the microphone 150 and flowing into the recess comes around the sound hole 254, the flow is restricted by the rib 261. Since the rainwater flowing on the surface of the enclosure does not block the sound hole 254, the rib 261 contributes to a reduction in sound quality deterioration during rainfall.

  Since the rainwater adhering to the surface of the housing is restricted in flow by the ribs 261, the sound hole 254 is not easily blocked. However, if rainwater adheres directly to the inside of the rib 261, the sound hole 254 may be blocked. A slit 262 is formed in the rib 261. Rainwater that enters the inside of the rib 261 or the inside of the sound hole 254 is drained from the slit 262 along the dotted line path in FIG. Since rainwater is drained from the slit 262, the slit 262 contributes to the reduction of sound quality degradation during rain.

  If the surveillance camera is a wall surface, it is installed at a high place and used to look down on the surveillance object. In order to efficiently collect sound in the shooting direction, the microphone unit 150 is disposed below the dome cover 101.

  Since the microphone unit 150 is disposed on the lower side of the dome cover 101, it is easy to collect sound on the monitoring target side. The slit 262 is disposed on the opposite side of the dome cover 101 with the sound hole 254 interposed therebetween. By providing the slit 262 in the direction facing the dome cover 101, it is possible to achieve both sound quality improvement during normal use and sound quality improvement during rain.

  Then, the 2nd modification of this invention is described using FIG. Here, FIG. 5 is a perspective view of the dome-type surveillance camera 10 in the second modification of the present invention, and the right view of FIG. 5 is an enlarged view of a C portion. In this modification, the same reference numerals are given to the same elements as those corresponding to the above-described embodiment, and the description thereof is omitted.

  A second rib 362 is provided outside the first rib 361. The first rib 361 and the second rib 362 have a rib shape that is provided in the recess and is erected toward the outside of the housing. The first rib 361 and the second rib 362 do not protrude from the housing surface S of the upper cover 302.

  A slit 363 is provided in the first rib 361. The slit 363 is disposed between the second rib 362 and the sound hole 354. A plurality of combinations of the slits 363 and the second ribs 362 are provided. In this embodiment, there are two sets, and they are arranged substantially opposite to each other across the sound hole 354.

  The second rib 362 restricts the intrusion of rainwater from the slit 363 into the first rib 361. Rainwater adhering to the surface of the enclosure flows down along the surface of the enclosure along the alternate long and short dash line in FIG. When rainwater adhering above the microphone 150 and flowing into the recess comes around the sound hole 354, the flow is restricted by the first rib 361 and the second rib 362. The first rib 361 and the second rib 362 are configured so that rainwater that has flowed on the surface of the housing is less likely to block the sound hole 354, which contributes to a reduction in sound quality degradation during rainfall. If rainwater adheres directly to the inside of the first rib 361, the sound hole 354 may be blocked. A slit 363 is formed in the first rib 361. Since the slit 363 is formed, the rainwater that enters the first rib 361 is drained along the dotted line in FIG. Since rainwater is drained, the slits 363 contribute to the reduction of sound quality degradation.

  By adopting a double structure of the first rib 361 and the second rib 362, it is possible to achieve both the regulation of rainwater flowing on the surface of the housing and the drainage of rainwater directly attached to the inside of the first rib 361. Can do. Also, with this configuration, rainwater can be regulated and drained even if the camera installation direction is reversed upside down. Therefore, the present invention can achieve both improvement in sound quality during rainfall, regardless of the installation direction of the camera.

  As mentioned above, although preferable embodiment of this invention was described, this invention is not limited only to this embodiment, A various deformation | transformation and change are possible within the range of the summary.

101 Dome cover 102 Upper cover 103 Lower cover 153 Microphone 154 Sound hole 155 Concave portion 161 Rib

Claims (7)

A housing of an electronic device provided with a microphone inside a housing,
A recess provided on the surface of the housing;
An opening which is provided in the recess and is a sound hole of the microphone;
Surrounding the periphery of the opening, consisting of a first rib erected in the recess,
The casing of the electronic device, wherein the first rib does not protrude from the surface of the casing.   The casing of the electronic device according to claim 1, wherein the first rib has a substantially annular shape.   The casing of the electronic device according to claim 1, wherein the first rib is separated from the opening.   The thickness of the said housing is thicker than the thickness of the said recessed part, The housing of the electronic device of any one of Claims 1-3 characterized by the above-mentioned.   The housing of the electronic device according to claim 1, wherein the first rib is provided with a slit. The electronic device includes a dome cover,
An imaging device having imaging means disposed in the dome cover,
The imaging device having a housing according to claim 5, wherein the slit is disposed on the opposite side of the dome cover with the opening interposed therebetween. The second rib is erected in the recess and outside the first rib, and does not protrude from the surface of the housing,
The slit is disposed between the second rib and the opening;
The imaging device having the housing of the electronic device according to claim 5 and the housing according to claim 6, wherein a plurality of the second ribs and the slit are provided.

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