JP6412454B2 - Intercom equipment - Google Patents

Description

  The present invention relates to an intercom device equipped with a camera for imaging visitors and the like, for example.

  2. Description of the Related Art Conventionally, interphone devices such as interphone slave units installed at entrances or the like have been equipped with cameras for imaging visitors. Further, it has been devised that the camera is held in a camera holder that rotates about the left and right direction as an axis, and the imaging angle in the vertical direction, that is, the tilt angle can be adjusted according to the installation environment of the intercom device. In an intercom device equipped with a camera capable of adjusting the tilt angle, the lens center line and the rotation axis of the camera holder intersect the peripheral surface of the camera holder surrounding the camera lens. When the camera holder is attached to the case, a spherical contact surface that can contact the spherical surface of the camera holder is formed on the case that pivotally supports the camera holder. By configuring the surface and the contact surface to be in close contact with each other, the occurrence of condensation in the lens cover attached to the front side of the lens has been prevented (for example, Patent Document 1).

JP 2012-175660 A

  In recent years, downsizing of a camera holder has been desired, and in particular, in the structure described in Patent Document 1, downsizing of the left and right width (width in the axial direction of the camera holder) is desired. However, if the left and right width of the camera holder is simply narrowed, a gap will be formed between the spherical surface and the contact surface on both the left and right sides of the peripheral surface of the camera holder, causing condensation within the lens cover. Problem arises. Further, if the spherical surface and the contact surface are brought into contact with each other on both the left and right sides, the camera holder cannot be rotated in the first place.

  Therefore, the present invention has been made in view of the above-described problems, and it is possible to reduce the size of the camera holder that can adjust the tilt angle, in particular, to reduce the left-right width while preventing the occurrence of condensation. It is intended to provide intercom equipment.

  In order to achieve the above object, the invention described in claim 1 of the present invention is an interphone device in which a camera for imaging the front of the main body case is attached in the main body case so that the tilt angle thereof can be adjusted. The camera holder that holds the camera is formed in a box shape that has a lens hole that exposes the lens on the front surface and opens to the rear side, and the rotation shaft projects from the left and right side surfaces of the camera holder to the left and right sides, respectively. Furthermore, the surface of the upper and lower surfaces of the camera holder is a spherical surface centering on the intersection of the center line of the lens and the axis of the rotation axis, and the surfaces of the left and right side surfaces of the camera holder are rotated. A spherical surface that swells outward, centered on a position that is a predetermined distance away from the intersection, on the axis of the moving axis and away from the intersection, while the camera holder is fitted into the body case from the rear side A cylindrical opening for exposing the lens to the front side of the main body case and a pair of shaft support portions for supporting the rotation shaft are provided, and a camera holder is fitted on the inner surface of the opening portion. In this case, the camera holder is characterized in that the upper surface, the lower surface, and the left and right side surfaces of the camera holder are in contact with each other.

  According to the first aspect of the present invention, the camera holder for holding the camera is formed in a box shape having a lens hole for exposing the lens on the front surface and opened on the rear side, and from both left and right side surfaces of the camera holder. Rotating shafts project from the left and right sides, respectively, and the upper and lower surface portions of the camera holder are spherical with the intersection of the center line of the lens and the axis of the rotating shaft as the center. The left and right side surfaces are spherical surfaces that bulge outwardly on the axis of the rotation axis and away from the intersection at a predetermined distance from the intersection, while the camera case is attached to the body case. A cylindrical opening for allowing the lens to be exposed from the rear side and exposing the lens to the front side of the main body case and a pair of shaft support portions for supporting the rotation shaft are provided, and the inner surface of the opening portion is attached to the camera holder. The camera holder has a spherical surface with which the top surface, bottom surface, and left and right side surfaces of the camera holder can come into contact with each other, so that the camera holder can be rotated, that is, the camera tilt angle can be adjusted. It is possible to always maintain a close contact state between the peripheral surface of the holder and the inner surface of the opening, and it is possible to prevent the occurrence of condensation on the front side of the lens. Further, the bulge of the camera holder particularly in the left-right direction can be suppressed, and the camera holder can be miniaturized.

  According to the present invention, while the rotation of the camera holder, that is, the adjustment of the tilt angle of the camera can be performed, the contact state between the peripheral surface of the camera holder and the inner surface of the opening can always be maintained. It is possible to prevent the occurrence of condensation. Further, the bulge of the camera holder particularly in the left-right direction can be suppressed, and the camera holder can be miniaturized.

It is explanatory drawing which showed the intercom cordless handset from the front side. It is the perspective explanatory view which showed the intercom cordless handset from the rear side. It is the perspective explanatory view which showed the front case of the intercom cordless handset in the state where the camera holder was attached from the front side. It is the perspective explanatory view which showed the front case of the intercom cordless handset in the state where the camera holder was attached from the rear side. It is the perspective explanatory view which showed the front case in the state from which the camera holder was removed from the rear side. It is the perspective explanatory view which showed the front case in the state from which the camera holder was removed from the front side. It is a perspective explanatory view of a camera holder, (a) is shown from the front side, (b) is shown from the rear side, respectively. It is explanatory drawing of a camera holder, (a) is shown from the front side, (b) is shown from the right side, (c) is each shown from the lower side. It is explanatory drawing which showed the attaching part vicinity of the camera holder in the AA cross section in FIG. It is explanatory drawing which showed the attachment part vicinity of the camera holder in the BB line cross section in FIG.

  Hereinafter, an intercom slave which is an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an explanatory view showing the intercom slave 1 from the front side. FIG. 2 is a perspective explanatory view showing the intercom slave 1 from the rear side. FIG. 3 is a perspective explanatory view showing the front case 2 of the intercom handset 1 with the camera holder 11 attached from the front side. FIG. 4 is a perspective explanatory view showing the front case 2 of the intercom handset 1 with the camera holder 11 attached from the rear side. FIG. 5 is a perspective explanatory view showing the front case 2 with the camera holder 11 removed from the rear side. FIG. 6 is a perspective explanatory view showing the front case 2 with the camera holder 11 removed from the front side. FIG. 7 is a perspective explanatory view of the camera holder 11, where (a) is shown from the front side and (b) is shown from the rear side. FIG. 8 is an explanatory diagram of the camera holder 11, where (a) is shown from the front side, (b) is shown from the right side, and (c) is shown from the bottom side. FIG. 9 is an explanatory view showing the vicinity of the attachment portion of the camera holder 11 in the cross section along the line AA in FIG. FIG. 10 is an explanatory view showing the vicinity of the attachment portion of the camera holder 11 in the cross section taken along line BB in FIG.

  The intercom handset 1 has a main body case including a front case 2 disposed on the front side and a rear case 3 disposed on the rear side. A camera window 4 is provided in the upper front portion of the main body case, and the camera is installed in the main body case so that the lens 5 (shown in FIG. 9 and the like) is exposed in the camera window 4. On the right side of the camera window 4, a microphone unit 6 for calling is provided. Furthermore, a call button 7 that is operated when a visitor calls a resident and a speaker unit 8 for a call are provided below the camera window 4. Such an intercom handset 1 is installed on the wall surface of the entrance of the dwelling unit. When a call button 7 is operated by a visitor, an interphone master unit (not shown) installed in the dwelling unit. And activate the camera to capture the visitors. In addition, 9 is a lens cover assembled to the front case 2 so as to cover the camera window 4, and 10 is a decorative cover attached to the front surface of the front case 2. In addition, the video imaged by the camera is displayed on a monitor provided in the intercom base unit.

  When the camera is installed in the main body case, the lens 5 is held by the camera holder 11. The camera holder 11 is a synthetic resin member formed in a substantially rectangular box shape that opens to the rear side. The surfaces of the upper surface portion 11a, the lower surface portion 11b, and the left and right side surface portions 11c and 11d are described later. It is formed into a spherical shape like this. A lens hole 12 for exposing the lens 5 is formed in the front surface of the camera holder 11. Further, at the rear end edges of the left and right side surface portions 11c and 11d of the camera holder 11, opposed to each other through the center of the lens hole 12, there are provided rotating shafts 13 protruding outward in the left and right directions. An operation piece 14 for adjusting the tilt angle of the camera holder 11 is provided on the left rotation shaft 13 as viewed from the front side. The operation piece 14 is formed in a disc shape with the rotation shaft 13 as a center, and has an operation claw 15 that protrudes forward from the outer peripheral surface and an operation knob 16 that protrudes rearward from the outer peripheral surface. ing. Further, an angle adjusting portion 17 in which a plurality of locking concave portions are arranged in parallel in the circumferential direction is provided at the proximal end portion of the operation claw 15 on the outer peripheral edge of the operation piece 14. Reference numeral 18 denotes a board fixing portion for screwing the camera board.

  Further, the surfaces of the upper surface portion 11a and the lower surface portion 11d of the camera holder 11 are, as in the conventional case, the center line of the lens 5 (also the center of the lens hole 12) and the rotation axis line of the camera holder 11 (center line of the rotation shaft 13). ) Is a spherical surface with the center O1 as the point at which it intersects. Specifically, the surface of the upper surface portion 11a is a spherical surface with a radius r1, and the surface of the lower surface portion 11b is a spherical surface with a radius r2. On the other hand, the surface of the left side surface portion 11c as viewed from the front side of the camera holder 11 is not on the intersection with the center line of the lens 5 but on the rotation axis of the camera holder 11, but on the right side from the intersection ( Specifically, the spherical surface bulges outward from the radius r3 with the center O2 at a position 50 mm away). That is, the surface of the side surface portion 11c is a spherical surface having a smaller curvature than the surfaces of the upper surface portion 11a and the lower surface portion 11d, that is, a spherical surface close to a so-called flat surface, and the swelling of the camera holder 11 to the left side is suppressed. . In addition, the surface of the right side surface portion 11d as viewed from the front side of the camera holder 11 is similar to the side surface portion 11c from the intersection of the rotation axis line of the camera holder 11 and the center line of the lens 5, and the rotation axis line of the camera holder 11 A spherical surface that bulges outward from the center (not shown) centered at a position away from the left side (specifically, this is also 50 mm), and the bulge of the camera holder 11 to the right side is suppressed.

  On the other hand, a cylindrical holding wall 21 is provided on the rear surface of the front case 2 as an attachment structure for attaching the camera holder 11. The holding wall 21 is erected on the rear side along the opening edge of the camera window 4, and the inner surfaces of the holding wall 21 are the surfaces of the upper surface portion 11 a, the lower surface portion 11 b, and the left and right side surface portions 11 c and 11 d of the camera holder 11. The spherical surface is abuttable. Therefore, when the camera holder 11 is fitted into the holding wall 21, as shown in FIGS. 9 and 10, the upper surface portion 11 a and the lower surface portion 11 b of the camera holder 11 and the surfaces of the left and right side surface portions 11 c and 11 d and the holding wall 21. The camera holder 11 is attached to the rear surface side of the front case 2 with the inner surface of the front case 2 in close contact. In addition, on the rear surface of the front case 2, bearing portions 22, 22 for pivotally supporting the rotation shafts 13, 13 of the camera holder 11 are provided at positions on the left and right outer sides of the camera window 4. In addition, an operation window 23 for allowing the operation claw 15 of the operation piece 14 to protrude to the front side of the front case 2 is opened at a position adjacent to the left of the bearing portion 22 on the left side (viewed from the front side) in the front case 2. ing. Further, the left bearing portion 22 is integrally provided with an elastic locking piece 24. The elastic locking piece 24 is formed as a tongue piece that extends to the rear side of the operation window 23 and then extends to the front side (inside the operation window 23), and is formed in the left-right direction (the rotation axis direction of the camera holder 11). Has elasticity. Further, a locking projection 25 that can be locked to the angle adjusting portion 17 is provided on the outer surface of the distal end portion of the elastic locking piece 24.

  The camera holder 11 as described above is mounted on the bearings 22 and 22 after the lens 5 is attached with the lens exposed from the lens hole 12 or the camera substrate 19 (shown in FIG. 9 or the like) is fixed. It is attached to the rear surface side of the front case 2 by being fitted into the holding wall 21 while pivoting the dynamic shafts 13 and 13. In the attached state, the operation piece 14 faces the elastic locking piece 24, and the locking projection 25 is locked in any locking recess of the angle adjusting portion 17. It is maintained by the urging force of the elastic locking piece 24. Furthermore, the operation claw 15 protrudes to the front side of the front case 2 through the operation window 23, and the operator operates the operation claw 15 in the vertical direction from the front side of the main body case to attach the elastic locking piece 24. The tilt angle of the camera can be adjusted by changing the mounting recess of the locking projection 25 to resist the force and changing the mounting posture of the camera holder 11. On the other hand, when the rear case 3 is assembled to the rear surface of the front case 2, the operation knob 16 protrudes to the rear surface side of the rear case 3 through an operation hole 26 (shown in FIG. 2) provided in the rear case 3. . Therefore, the operator operates the operation knob 16 in the up and down direction, and changes the locking recess in which the locking projection 25 is locked against the urging force of the elastic locking piece 24, thereby The tilt angle of the camera can be adjusted even from the rear side. The peripheral surface of the camera holder 11 (the upper surface portion 11a, the lower surface portion 11b, and the surfaces of the left and right side surface portions 11c and 11d) is a spherical surface as described above. In addition, the contact state between the peripheral surface of the camera holder 11 and the inner surface of the holding wall 21 is maintained.

  According to the intercom handset 1 having the above-described configuration, the surfaces of the upper surface portion 11a and the lower surface portion 11d of the camera holder 11 formed in a box shape having the lens hole 12 on the front surface and opened on the rear side. The spherical surface with the center O1 at the point where the center line of the lens 5 and the rotation axis of the camera holder 11 intersect is formed, and the surface of the left side surface portion 11c as viewed from the front side of the camera holder 11 is the surface of the camera holder 11. Although it is on the rotation axis, it is not an intersection with the center line of the lens 5, but a spherical surface bulging outward with the center O2 at a position away from the intersection to the right side (position away from the self by a predetermined distance), Further, the surface of the right side surface portion 11d as viewed from the front side of the camera holder 11 is a position away from the intersection to the left side as in the case of the side surface portion 11c (predetermined distance to the side away from itself). A cylinder that swells outward with the center of the distant position as a center, and is erected on the rear side of the front case 2 along the opening edge of the camera window 4 so that the camera holder 11 can be fitted from the rear side. A holding wall 21 is provided, and the inner surface of the holding wall 21 is a spherical surface on which the upper surface portion 11a, the lower surface portion 11b, and the left and right side surface portions 11c, 11d of the camera holder 11 can come into contact. Accordingly, the camera holder 11 can be rotated, that is, the tilt angle of the camera can be adjusted, and the close contact state between the peripheral surface of the camera holder 11 and the inner surface of the holding wall 21 can be always maintained, thereby preventing the occurrence of condensation. be able to. In addition, the bulge of the camera holder 11 in the left-right direction can be particularly suppressed, and the camera holder 11 can be reduced in size.

Further, the operation claw 15 extending from the rotation shaft 13 to the front side is provided integrally with the rotation shaft 13, and when the operation window 23 is opened in the front case 2 and the camera holder 11 is attached, the operation claw 15 is moved to the operation window. It projects from the front side of the front case 2 through 23. On the other hand, an operation knob 16 extending integrally from the rotary shaft 13 to the rear side is provided integrally with the rotary shaft 13, and an operation hole 26 is opened in the rear case 3 so that the camera case 11 is attached to the front case 2. When the rear case 3 is assembled, the operation knob 16 protrudes to the rear surface side of the rear case 3 through the operation hole 26. Therefore, the tilt angle of the camera can be adjusted from both the front and rear sides of the main body case, and the workability is very good.
Further, an elastic locking piece 24 having elasticity in the left-right direction is provided on the bearing portion 22, and a locking projection 25 is projected from the distal end portion of the elastic locking piece 24. The operation piece 14 that opposes the piece 24 is provided, and a plurality of engagement recesses that can be engaged with the engagement protrusions 25 are provided on the surface of the operation piece 14 that faces the elastic engagement piece 24. A plurality of angle adjusting portions 17 are provided in parallel along the circumference centered at the center, and the locking state between the locking projection 25 and the locking recess is maintained by the urging force of the elastic locking piece 24. At the same time, the tilt angle of the camera is adjusted by changing the locking recess that the locking projection 25 locks against the urging force. Accordingly, since the camera holder 11 is integrally provided with a structure for maintaining the tilt angle of the camera holder 11 as well as a member for operating the tilt angle of the camera, it is necessary to install another dedicated member. The configuration can be rationalized.

  Note that the intercom device according to the present invention is not limited to the aspect of the above-described embodiment. The interphone device is not limited to the overall configuration of the interphone device, and the configuration related to the camera holder, the tilt angle maintaining mechanism, and the like. The present invention can be changed as needed without departing from the spirit of the invention.

For example, in the above-described embodiment, the structure related to the adjustment of the tilt angle such as the operation piece 14, the operation claw 15, and the operation knob 16 is concentrated on the left rotation shaft 13, and a part of the structure is provided on the right side. The rotation shaft 13 may be provided, and the location where the structure related to the adjustment of the tilt angle is provided can be appropriately changed.
Moreover, in the said embodiment, although the latching protrusion 25 is each provided in the front case 2 side and the latching recessed part is provided in the rotating shaft 13, the latching recessed part is provided in the front case 2 side, and the rotating shaft 13 side is provided. It is possible to provide locking protrusions, respectively, and even if an elastic locking portion is provided on the rotating shaft 13 side, there is no problem.

Further, when the surface of the upper and lower surface portions of the camera holder and the left and right side surface portions are made spherical, the radius is set and the center is set to be limited to the values in the above embodiment. There is nothing.
Furthermore, as a structure related to the adjustment of the tilt angle, it is possible to provide only one of the operation claw 15 and the operation knob 16.
In addition, in the above-described embodiment, an interphone slave device that is an example of an interphone device has been described. However, as long as a camera capable of adjusting the tilt angle is provided, the interphone slave device may be another interphone device such as an interphone master device. There is no problem.

  1 .. Interphone cordless handset (interphone equipment) 2 .... Front case (main body case) 3 .... Rear case (main body case) 4 .... Camera window (opening) 5 .... Lens, 11 .... Camera Holder 11a ··· Upper surface portion 11b ·· Lower surface portion 11c, 11d · Side surface portion 12 · · Lens hole 13 · · Rotating shaft 14 · · Operation piece 15 · · · Operation claw 16 · · · Operation knob, 17 .. Angle adjustment part, 21 .. Holding wall (opening), 22 .. Bearing part, 23 .. Operation window, 24 .. Elastic locking piece, 25. Operation hole.

Claims (1)

In the main body case, an interphone device in which a camera for imaging the front of the main body case is attached so that the tilt angle thereof can be adjusted,
The camera holder for holding the camera is formed in a box shape having a lens hole for exposing the lens on the front surface and opened to the rear side, and the rotation shaft projects from the left and right side surfaces of the camera holder to the left and right sides, respectively. Set up
Furthermore, the surface of the upper surface portion and the lower surface portion of the camera holder is a spherical surface centering on the intersection of the center line of the lens and the axis of the rotation shaft, and the surfaces of the left and right side surfaces of the camera holder are On the axis of the rotation shaft, and a spherical surface that bulges outward centered on a position away from the intersection by a predetermined distance toward the side away from itself,
A cylindrical opening for allowing the camera holder to be fitted into the main body case from the rear side and exposing the lens to the front side of the main body case, and a pair of shaft support portions for supporting the rotating shaft. The interphone is characterized in that the inner surface of the opening is a spherical surface on which the upper surface, the lower surface, and the left and right side surfaces of the camera holder can come into contact when the camera holder is fitted. machine.

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