JP2008035105A - Front door slave unit with camera for interphone device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To change the imaging direction of a camera having a simple configuration, without having to move the camera, and to easily change the imaging direction of the camera, even after the operation. <P>SOLUTION: A disc-shaped prism 1 is installed, substantially in parallel with a camera lens 7a on the front face of a camera 7. A prism 1 is arranged so as to be exposed, by forming an opening part 21 in a camera cover 2 for protecting the camera 7, and is rotatably, operatated within a plane in parallel with the camera lens 7a. A positioning structure, consisting of a notch 18 and a protrusion 19 for carrying out positioning at a plurality of different angles in the case of rotating the prism 1 is installed between the prism 1 and a case 9b. The camera cover 2 is formed so as to be detachable, and the imaging direction of the camera 7 is changed, by rotation operating of the prism 1, even after the execution. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a camera-equipped entrance slave unit of an interphone device, and more particularly to an improvement of a pan / tilt mechanism of a camera.

  The intercom unit's camera-equipped cordless handset changes the position of the visitor that fits in the camera depending on the configuration of the installed entrance and the height of the installed entrance. Some are configured to allow changes. As such a conventional configuration, the direction can be manually changed (see, for example, Patent Document 1), or it can be changed electrically, so that it can be changed each time according to the visitor by operating the living room master unit. There are some (see, for example, Patent Document 2).

JP 63-126382 A JP 2001-128156 A

However, what is performed manually is mainly performed at the time of construction, and since it is assumed that the camera is used in a fixed state after construction, it is difficult to change the camera angle after construction. Removal work was necessary. In the case of the configuration described in Patent Document 1, the imaging direction is changed by changing the angle of the substrate itself on which the camera is assembled by operating the operation unit on the back of the entrance unit case. A space for rotating the substrate and a space for moving the camera along with the space are required, and the case becomes thicker and larger.
On the other hand, the one that can operate the camera direction from the above-mentioned living room master is convenient and convenient, but the camera control mechanism is necessary, so that the structure is complicated and expensive.

  Therefore, in view of such a problem, the present invention can change the imaging direction of the camera with a simple configuration without having to provide a camera movement space, and easily change the imaging direction of the camera even after construction. It is an object of the present invention to provide an entrance phone with a camera for an intercom device.

In order to solve the above problems, the intercom device with a camera of the intercom device according to the invention of claim 1 is provided with a disk-shaped prism disposed substantially in parallel with the lens of the camera on the front surface of the camera, It is held by a camera cover for protection and can be rotated in a plane parallel to the camera lens, and the prism is mounted between the prism and the entrance unit case or between the prism and the camera cover. It is equipped with a positioning structure that can be positioned at multiple different angles when rotated in a plane parallel to the lens, and the camera cover is detachably attached to the entrance unit case so that the prism can be rotated from the front of the entrance case. It is characterized by that.
According to this configuration, the pan / tilt operation of the camera can be performed by rotating the prism at the time of construction, and the imaging direction can be changed without moving the camera (the base on which the camera is mounted). Therefore, it is not necessary to provide a moving space for the camera and a moving space for the substrate to which the camera is attached, and the entrance unit case can be made thin and small. Also, the prism is configured to rotate within a plane parallel to the camera lens, and does not require a power source. Therefore, the prism can be brought closer to the camera, and the prism installation space can be reduced.
Furthermore, since the prism can be fixed at multiple angles, the best imaging direction can be easily selected according to the installation environment of the entrance unit, and the prism angle can be changed simply by operating the camera cover. The troublesome work of removing the case is not necessary, and the user can easily change the prism angle even after construction.

According to a second aspect of the present invention, in the first aspect of the present invention, the camera cover has an opening that exposes the polarization plane of the prism, and holds the periphery of the prism.
With this configuration, since the prism is exposed, a protective member on the front surface of the prism is not required, and the combined thickness of the rhythm and the camera cover can be reduced, and the thickness of the entrance unit case can be further reduced.

The invention of claim 3 is characterized in that, in the invention of claim 1 or 2, illumination means for enabling imaging even at night is arranged on the front face of the entrance unit case adjacent to the camera cover.
With this configuration, since the illumination unit is disposed outside the camera cover, the irradiated light is not reflected on the camera cover and reflected on the camera.

According to the present invention, since it is possible to change the imaging direction without moving the camera during construction, it is not necessary to provide a moving space for the camera and a moving space for the board to which the camera is attached, and the entrance unit case is thin and small. Can be. Also, the prism is configured to rotate within a plane parallel to the camera lens, and does not require a power source. Therefore, the prism can be brought closer to the camera, and the prism installation space can be reduced.
Furthermore, since the prism can be fixed at multiple angles, the best imaging direction can be easily selected according to the installation environment of the entrance unit, and the prism angle can be changed simply by operating the camera cover. The troublesome work of removing the case is not necessary, and the user can easily change the prism angle even after construction.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, embodiments of the invention will be described in detail with reference to the drawings. 1 to 3 show a camera-equipped entrance cordless handset according to the present invention, FIG. 1 is a front view, FIG. 2 is an external view with a camera cover removed, and FIG. 3 is a longitudinal sectional view (cross section taken along line AA). Figure). In these figures, 1 is a prism, 2 is a camera cover, 3 is a light emitting diode as an illumination means, 4 is a microphone, 5 is a speaker, 6 is a call button, 7 is a camera incorporating an image sensor, and 8 is waterproof. Packing 9a is under the case that is the main body of the camera-equipped entrance slave unit, and 9b is over the case that closes the front surface of the case lower 9a.

  A camera cover housing portion 11 for installing the camera cover 2 is recessed in the upper front portion of the case top 9b forming a part of the entrance child device case, and the camera 7 is disposed in the center thereof. The camera 7 is mounted on a substrate 13 assembled to the lower case 9a, and the camera lens 7a is disposed so as to be exposed from a camera placement portion 12 having an opening formed in the camera cover housing portion 11. A circular prism housing portion 15 is further recessed in the camera cover housing portion 11 around the camera placement portion 12.

  A ring-shaped packing housing portion 16 is recessed in the prism housing portion 15 so as to surround the camera placement portion 12, and the packing 8 housed therein is pressed against the camera 7 by the prism 1 disposed on the front surface. It is configured to protect against rainwater.

  The prism 1 is formed in a disc shape, and an engagement frame 1a that engages with the back of the camera cover 2 is provided in a skirt shape. And as shown in FIG. 3, the back surface is inclined and the thickness continuously changes at a constant rate in a constant direction. By utilizing the change in the refractive index due to the inclination, the prism 1 is arranged in parallel with the front surface of the camera lens 7a and rotated in the parallel plane, thereby changing the refraction direction of the incident light of the camera 7 and changing the imaging direction. Is configured to be changed.

  Further, the engagement frame 1a is provided with notches 18 for positioning the prism 1 at equal intervals in the four directions of the periphery, and at four locations on the peripheral wall portion of the prism accommodating portion 15 on the corresponding case 9b, Similarly, four protrusions 19 that engage with the notches 18 are provided. With the positioning structure including the notches 18 and the protrusions 19, the prism 1 can be fixed every time it rotates 90 degrees.

  The camera cover 2 includes an opening 21 that exposes the prism 1, and a locking member 22 that locks the case upper 9 b is provided at both the upper side end bent in an L shape and the lower front surface. The locking member 22 provided on the upper side is a protruding piece 22a that engages with a recess (not shown) provided on the case upper 9b, and the locking member 22 provided on the lower side is provided on the case upper 9b. This is a claw piece 22 b inserted and locked in the stop hole 23. The locking action between the claw piece 22b and the locking hole 23 can be released by performing an operation of pulling the camera cover 2 forward. A pair of protruding pieces 22a and claw pieces 22b are provided.

The thickness of the portion of the prism 1 exposed from the camera cover 2 (height from the engagement frame 1a) is the same as that of the camera cover 2, and the front surface of the prism 1 and the front surface of the camera cover 2 are flush with each other. It is formed to become. The camera cover housing 11 is formed to a depth that matches the thickness of the camera cover 2, and is formed so that the front surface of the case top 9 b and the front surface of the camera cover 2 are flush with each other.
Thus, even if the prism 1 and the camera cover 2 are integrated, and the camera cover 2 and the case top 9b are integrated, and the camera cover 2 has an opening, there is no sense of incongruity in appearance. The shape is aesthetically preferable.

  Thus, since the pan / tilt operation of the camera can be performed by rotating the prism at the time of construction, the imaging direction can be changed without moving the camera (the base on which the camera is mounted). Therefore, it is not necessary to provide a moving space for the camera and a moving space for the substrate to which the camera is attached, and the entrance unit case can be made thin and small. Specifically, as an example of the size of the prism, the thickness is 5 mm and the diameter is 30 mm. Considering the thickness of the camera cover 2, if there is a space of about 3 mm in front of the camera, the configuration of the present invention is important. Part prisms can be assembled.

Also, the prism is configured to rotate within a plane parallel to the camera lens, and does not require a power source. Therefore, the prism can be brought closer to the camera, and the prism installation space can be reduced.
Furthermore, since the prism can be fixed at multiple angles, the best imaging direction can be easily selected according to the installation environment of the entrance unit, and the prism angle can be changed simply by operating the camera cover. The troublesome work of removing the case is not necessary, and the user can easily change the prism angle even after construction.
Further, by exposing the prism from the camera cover, the combined thickness of the prism and the camera cover can be reduced, and the thickness of the entrance unit case can be further reduced.

In addition, since the prism angle can be changed by simply opening the camera cover, the angle can be changed easily without the need for the troublesome work of removing the entrance unit case, and the user can operate the prism by himself, which is convenient.
Further, since the illumination means is arranged outside the camera cover, the irradiated light is not reflected on the camera cover or the like and reflected on the camera.

In the above embodiment, the prism 1 can be positioned every 90 ° (every quarter rotation). However, if at least more notches 18 are provided, for example, 36 pieces are provided, the prism 1 can be rotated every 10 °. Positioning is possible, and finer angle control is possible.
The prism 1 is exposed by providing the camera cover 2 with the opening 21, but the entire prism 1 may be covered with the camera cover without providing the opening 21. By covering, it can be set as the structure where rainwater does not enter more easily.
Furthermore, instead of changing the imaging range up, down, left and right, using a camera equipped with a zoom-in / zoom-out lens allows the image to be captured to be enlarged or reduced freely.
In addition, although the prism 1 positioning structure is provided between the entrance unit case (upper case 9 b), it may be provided between the prism cover 1 and the camera cover 2.

It is a front view which shows an example of embodiment of the entrance child machine with a camera of the intercom apparatus which concerns on this invention. It is an external view of the state which removed the camera cover of the entrance child machine with a camera of FIG. It is the sectional view on the AA line of FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Prism 2 ... Camera cover 3 ... Light-emitting diode 7 ... Camera 7a ... Camera lens 9a ... On case 11 ... Camera cover accommodation part 15 ... Prism accommodation part 18 .. Notches, 19 .. Projections, 21 .. Openings, 22 .. Locking members.

Claims (3)

A disc-shaped prism arranged approximately in parallel with the camera lens is provided on the front of the camera. The prism is held by a camera cover for protecting the camera and can be rotated in a plane parallel to the camera lens. Because
A positioning structure capable of positioning at a plurality of different angles when the prism is rotated in a plane parallel to the camera lens, between the prism and the entrance unit case or between the prism and the camera cover,
An intercom device-equipped entrance slave unit with a camera, wherein the camera cover is detachably attached to the entrance slave unit case, and the prism can be rotated from the front of the entrance case. 2. The door extension device with a camera of an intercom apparatus according to claim 1, wherein the camera cover has an opening for exposing a polarization plane of the prism and holds the periphery of the prism. The intercom device camera-equipped entrance slave unit according to claim 1 or 2, wherein illumination means for enabling imaging even at night is arranged on a front surface of the entrance slave unit case adjacent to the camera cover.

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