JP6453100B2 - Entrance cordless machine with camera - Google Patents

Description

  The present invention relates to a camera-equipped cordless handset for a visitor to call a resident.

  2. Description of the Related Art Conventionally, there is a front door with a camera having a camera function for confirming a visitor. Depending on the installation location and the surrounding environment of this camera-equipped entrance cordless handset, sunlight or downlight irradiation light may enter the camera lens. In this case, it is difficult to check the camera image at the time of calling or monitoring. Therefore, for example, it has been proposed to reduce sunlight incident on the camera lens by attaching a hood component (direct light avoidance plate), which is a separate component from the entrance device, to the main body case of the entrance device. (See Patent Document 1).

JP 2008-060908 A

  In the configuration in which the hood part is attached to the upper part of the main body case of the entrance unit as in the technique described in Patent Document 1, the influence on the overall appearance and design of the entrance unit becomes large. However, if the hood part is designed to be small in consideration of this influence, light such as sunlight or downlight irradiation light cannot be sufficiently shielded, and light incident on the camera lens cannot be reduced.

  Accordingly, an object of the present invention is to provide a camera-equipped entrance cordless handset that can reduce the light incident on the camera lens while suppressing the influence on the overall appearance and design.

In order to achieve the above-mentioned object,
A camera lens,
A body case including a first surface on which an opening for exposing the camera lens is formed;
A translucent cover member that covers the periphery of the opening and is mounted on the first surface;
A shielding member that is formed in an internal region defined by the cover member on the first surface and shields at least a part of light emitted from a light source located above the main body case and incident on the camera lens; .

  In the conventional configuration in which the shielding member (hood part) is attached to the upper part of the main body case, the light incident on the camera lens from above cannot be reduced unless the shielding member is formed with a certain size or larger. On the other hand, according to the said structure, the shielding member is provided in the internal area | region of the cover member in the 1st surface of a main body case. Thus, since the shielding member is disposed at a position closer to the camera lens as compared with the conventional configuration, the camera lens can be used even if the shielding member has a shape (size) that can be accommodated in the inner region of the cover member. Light entering from above can be shielded. Moreover, since this shielding member is covered with the cover member, it is not conspicuous when viewed from the outside, and the influence on the overall appearance and design of the camera-equipped entrance slave unit is small. Therefore, according to the said structure, the light which injects into a camera lens can be reduced, suppressing the influence which it has on the external appearance and design of the whole entrance unit with a camera.

Moreover, in the entrance child machine with a camera of the present invention,
The shielding member may be disposed between the opening and the light source when viewed from a direction perpendicular to the first surface.

  According to this configuration, the light incident from above the camera lens can be reduced by the shielding member disposed between the opening and the light source.

Moreover, in the entrance child machine with a camera of the present invention,
The shielding member may be formed in a plate shape on the first surface so as to protrude along a direction away from the first surface in the internal region.

  According to this configuration, light incident on the camera lens can be reduced by a plate-like configuration that is not conspicuous when viewed from the outside.

Moreover, in the entrance child machine with a camera of the present invention,
The tip of the shielding member may be disposed outside the imaging range of the camera using the camera lens.

  According to this structure, it can prevent that the front-end | tip part of a plate-shaped shielding member reflects in a camera image.

Moreover, in the entrance child machine with a camera of the present invention,
The shielding member is
A first shielding portion formed in a plate shape on the first surface so as to protrude along a direction away from the first surface in the inner region;
A second plate formed on the first surface so as to protrude along the direction away from the first surface in the internal region at a position closer to the light source than the first shielding portion. And a shielding portion.

  According to this configuration, even when the position of the light source with respect to the camera-equipped entrance child device is changed, the light incident on the camera lens can be shielded by the first shielding portion and the second shielding portion.

Moreover, in the entrance child machine with a camera of the present invention,
The distal end portion of the first shielding portion may be disposed at a position closer to the first surface in the inner region than the distal end portion of the second shielding portion.

  According to this configuration, the first shielding portion and the second shielding portion cause not only a flare-like ghost caused by light incident on the camera lens but also a point-like shape caused by reflected light (stray light) inside the cover member. Generation of ghosts and bright line ghosts can be suppressed.

Moreover, in the entrance child machine with a camera of the present invention,
The distal end portion of the first shielding portion and the distal end portion of the second shielding portion may be disposed outside the imaging range of the camera using the camera lens.

  According to this structure, it can prevent that the front-end | tip part of a 1st shielding part and the front-end | tip part of a 2nd shielding part are reflected in a camera image | video.

Moreover, in the entrance child machine with a camera of the present invention,
The front end surface of the shielding member may have an inclined surface that inclines so as to approach the first surface in the internal region from the upper end portion toward the lower end portion.

  According to this configuration, even if the position of the light source with respect to the camera-equipped entrance child device changes, the light incident on the camera lens can be shielded by the shielding member.

Moreover, in the entrance child machine with a camera of the present invention,
The upper end part and the lower end part of the shielding member may be arranged outside the imaging range of the camera using the camera lens.

  According to this configuration, the shielding member can be prevented from being reflected in the camera image.

Moreover, in the entrance child machine with a camera of the present invention,
You may provide the tilt mechanism which can change the direction of the imaging range of the camera using the said camera lens.

  According to this configuration, the camera lens is incident on the camera lens without affecting the overall appearance and design of the camera-equipped handset even when the camera lens is in a posture in which light from the light source can easily enter. Can reduce light.

  According to the entrance unit with a camera of the present invention, it is possible to reduce the light incident on the camera lens while suppressing the influence on the overall appearance and design.

It is a front view showing an entrance child machine with a camera concerning an embodiment of the present invention. It is sectional drawing in the AA of the entrance child machine with a camera shown in FIG. It is a fragmentary perspective view of the entrance child machine with a camera shown in FIG. It is a figure when a cover member is removed in the entrance child machine with a camera shown in FIG. It is a light ray figure for demonstrating the function of a shielding member, Comprising: (a) when a shielding member is not provided, (b) when a shielding member is provided and a downlight is a close position, (c) is a shielding member. It is a figure in case a downlight is in a position far away. It is a figure explaining the reflection phenomenon of the light which appears on the imaging screen of a camera, Comprising: (a) is a screen when a shielding member is not provided, (b) is a screen when a shielding member is provided. It is a perspective view of the entrance child machine with a camera for explaining modification 1 of a shielding member. It is sectional drawing in the BB line of the entrance child machine with a camera shown in FIG. It is a light ray figure for demonstrating the function of an inclination shielding part. It is a perspective view of the entrance child machine with a camera for explaining modification 2 of a shielding member. It is a ray diagram for demonstrating the function of a one-step shielding structure. It is a figure explaining the reflection phenomenon of the light at the time of providing the one-step shielding structure.

Hereinafter, an example of this embodiment will be described in detail with reference to the drawings.
As shown in FIGS. 1 and 2, the camera-equipped entrance cordless handset 1 includes a main body case 10. The main body case 10 includes a front member 10a and a rear member 10b. Each part of the camera-equipped entrance slave unit is housed in the housing space formed by the front member 10a and the rear member 10b.

  On the front surface (an example of the first surface) 11 of the front member 10a, a call button 12 and a recess 31 are provided. The bottom surface 32 of the recess 31 is provided with an opening 13, a first shielding portion 14A, and a second shielding portion 14B (an example of a shielding member). A cover member 15 is attached to the front surface 11 of the main body case 10 so as to cover the recess 31. The front surface 11 of the main body case 10 means the surface facing the visitor on the front side of the camera-equipped entrance child device 1, that is, the front surface of the front member 10 a of the main body case 10. A bottom surface 32 is also included in the front surface 11.

  The call button 12 is pressed when calling a resident.

  A camera lens 24 is disposed inside the opening 13 when viewed from the front side perpendicular to the front surface 11. The opening 13 is formed in a circular shape, for example, on the bottom surface 32 of the recess 31. A part of the spherical surface of the camera lens 24 is exposed from the inside of the main body case 10 to the outside through the opening 13. An imaging element 23 such as a CCD (charge-coupled device) or a CMOS (complementary metal oxide semiconductor) is provided behind the camera lens 24. The imaging unit 23 and the camera lens 24 constitute a camera unit 20. The camera unit 20 is attached to a tilt base (an example of a tilt mechanism) 22 that can change the orientation of the imaging range of the camera.

  The cover member 15 is formed of a substantially transparent resin material having translucency, and is disposed so as to cover the camera lens 24 to protect the camera lens 24 from the outside. The cover member 15 is attached on the front surface 11 so as to cover the periphery of the opening 13 from the front side of the main body case 10. A space (an example of an internal region) S is formed between the cover member 15 and the front surface 11 (bottom surface 32) of the main body case 10. In this space S, a first shielding part 14A and a second shielding part 14B are provided.

  The cover member 15 is attached so that a part of the cover member 15 is fitted into the recess 31. Part of the fitted cover member 15 protrudes forward from the recess 31. Light diffusion portions 15a and 15b are provided on the left and right sides of the cover member 15 for diffusing light toward the front of the camera-equipped entrance child device 1. The fitted cover member 15 may be configured not to protrude from the recess 31 to the outside.

  In the first shielding part 14A and the second shielding part 14B, a part of light emitted from a light source (for example, a downlight) located above the body case 10 (for example, the ceiling of the entrance) is incident on the camera lens 24. Shield. The first shielding part 14A and the second shielding part 14B are respectively provided at positions that shield light traveling from the outside through the cover member 15 toward the camera lens 24.

  The first shielding part 14 </ b> A and the second shielding part 14 </ b> B of this example are formed in a plate shape extending in the left-right direction of the main body case 10. The first shielding portion 14A and the second shielding portion 14B are provided on the front surface 11 so as to be juxtaposed in the vertical direction so as to protrude along a direction away from the front surface 11 (bottom surface 32). The second shielding part 14B is provided at an upper position closer to the downlight than the first shielding part 14A when viewed from the front side perpendicular to the front surface 11. Further, the second shielding portion 14B is formed so that the protruding length from the front surface is larger than that of the first shielding portion 14A. The first shielding part 14A and the second shielding part 14B are arranged between the ceiling downlight and the opening 13 in the vertical direction when viewed from the front side perpendicular to the front surface 11.

  As shown in FIGS. 3 and 4, the tip surface 33A of the first shielding part 14A and the tip surface 33B of the second shielding part 14B are each formed in an arc shape. The first shield 14A on the side close to the camera lens 24 is formed with a smaller value of R (curvature radius) at the arc portion than the second shield 14B on the side far from the downlight.

  Next, functions of the first shielding part 14A and the second shielding part 14B that shield the light of the downlight 41 provided on the ceiling of the entrance will be described with reference to FIGS. In FIG. 5, a range that can be captured by the camera lens 24 is illustrated as an imaging range 42.

First, before explaining the function of the shielding member of this example, the case where the first shielding portion 14A and the second shielding portion 14B are not provided will be described with reference to FIGS. 5 (a) and 6 (a). To do.
In this case, a part of the light emitted from the downlight 41 passes through the cover member 15 and is directly incident on the camera lens 24 as indicated by the light L1, for example, causing the flare-like ghost 51 in the captured image. Become. Further, a part of the light L1 is reflected by the surface of the camera lens 24 and travels toward the cover member 15, is further reflected by the inner surface of the cover member 15, enters the camera lens 24, and appears as a point ghost 52 in the captured image. It will cause to generate. As the light of the downlight 41 enters the camera lens 24 in this way, the reflected light appears as a flare-like ghost 51 or a dot-like ghost 52 in the image 50 captured by the camera lens 24.

  On the other hand, when the first shielding part 14A and the second shielding part 14B are provided, as shown in FIGS. 5B and 5C, the first shielding part 14A and the second shielding part 14B. As a result, the light of the downlight 41 is blocked.

  As shown in FIG. 5B, when the downlight 41 is attached at a position close to the entrance door unit 1 with the camera (the interval 43 is short), the light emitted from the downlight 41 is directed toward the camera lens 24. Most of the traveling light is shielded by the upper surface of the second shielding part 14B, for example, as indicated by the light L2. A part L3 of the light emitted from the downlight 41 is reflected by the inner surface of the cover member 15 after being reflected by the front end surface 33B of the second shielding part 14B, and then by the first shielding part 14A. Shielded by the top surface. In this way, the light emitted from the downlight 41 and directed to the camera lens 24 is shielded by the first shielding part 14A and the second shielding part 14B.

  Next, a case where the downlight 41 is attached at a position far from the camera-equipped entrance child device 1 as shown in FIG. 5C (the interval 44 is long) will be described. In this case, much of the light emitted from the downlight 41 and traveling to the camera lens 24 is shielded by the upper surface of the first shielding portion 14A as indicated by light L4, for example. Note that the light emitted from the downlight 41 and reflected by the distal end surface 33A of the first shielding portion 14A is, for example, the inner surface of the cover member 15 at a position that does not enter the imaging range 42 of the camera lens 24 as indicated by the light L5. And then proceed in a direction away from the camera lens 24.

  Note that the tip portions including the tip surfaces of the first shielding portion 14A and the second shielding portion 14B are obtained when the camera unit 20 is tilted by the tilt base 22 as shown in FIGS. Even if it exists, it arrange | positions outside the imaging range 42 so that it may not be reflected on the imaging screen of a camera.

  By providing the first shielding portion 14A and the second shielding portion 14B that shield the light of the downlight 41 in this manner, an image 55 captured using the camera lens 24 as shown in FIG. 6B. There is no reflection of irradiation light. In this way, a camera image in which the flare-like ghost 51 and the dot-like ghost 52 do not appear can be obtained.

  By the way, in the conventional configuration in which the shielding member (hood part) is attached to the upper part of the main body case, the light incident on the camera lens from the upper side is sufficiently shielded unless the shielding member is formed with a certain size or more. Can not. However, the configuration in which a large hood part is attached to the upper portion of the main body case is notable from the outside because it stands out from the outside.

  On the other hand, according to the entrance unit with camera 1 of the present embodiment, a space in which the first shielding portion 14A and the second shielding portion 14B are partitioned by the front surface 11 of the main body case 10 and the cover member 15. S is provided. For this reason, since the 1st shielding part 14A and the 2nd shielding part 14B are covered with cover member 15, they are not conspicuous seeing from the outside.

  Further, the first shielding portion 14 </ b> A and the second shielding portion 14 </ b> B are disposed at a position close to the camera lens 24 as compared with the hood component having the conventional configuration. For this reason, even if the first shielding part 14A and the second shielding part 14B have a shape (size) that can be accommodated in the space S, the downlight that enters the camera lens 24 from above is provided. The 41 light can be sufficiently shielded.

  Further, the tip surface 33A of the first shielding portion 14A and the tip surface 33B of the second shielding portion 14B arranged in parallel on the upper side of the camera lens 24 are formed in an arc shape, and the tip surface 33A and the tip surface 33B are formed. They are arranged so as not to enter the imaging range 42. By providing a two-stage shielding structure with these two shielding portions (14A, 14B), the downlight 41 can be installed near or far away from the entrance unit with camera 1. As shown in FIGS. 5B and 5C, the light incident on the camera lens 24 can be sufficiently shielded. As a result, as shown in FIG. 6B, a flare-like ghost caused by light incident on the camera lens 24, a point-like ghost or bright line caused by reflected light (stray light) inside the cover member 15 Generation of a ghost can be suppressed.

  Further, in this example, the tilt base 22 that can change the orientation of the imaging range of the camera lens 24 is provided. However, even when the posture of the camera lens 24 is changed, the first shielding portion 14A. And the light of the downlight 41 can be sufficiently shielded by the second shielding portion 14B.

  As described above, according to the camera-equipped entrance slave unit 1, it is possible to reduce the light incident on the camera lens 24 while suppressing the influence on the overall appearance and design.

(Modification 1)
Next, Modification 1 of the shielding member will be described with reference to FIGS. In addition, description is abbreviate | omitted by attaching | subjecting the same code | symbol to the component same as embodiment mentioned above.
The shielding member of this example is a member having an inclined surface (hereinafter referred to as an inclined shielding portion 61). The inclined shielding portion 61 is formed in a substantially trapezoidal column shape that is long in the left-right direction, and is disposed on the bottom surface 32 (front surface 11) of the recess 31 so as to extend in the left-right direction of the main body case 10 above the camera lens 24. Has been. The front end surface 61 </ b> A of the inclined shielding portion 61 is an inclined surface that is inclined so as to gradually approach the bottom surface 32 from the upper end portion 62 toward the lower end portion 63. Further, the upper end 62 to the lower end 63 are formed in an arc shape so that the value of the radius of curvature gradually decreases from the upper end 62 toward the lower end 63. The lower end portion from the upper end portion 62 of the inclined shielding portion 61 is disposed so as not to enter the imaging range 42 of the camera lens 24.

  As shown in FIG. 9, the light traveling from the downlight 41 toward the camera lens 24 is shielded by the upper surface 64 of the inclined shielding part 61, for example, as indicated by the light L6. Further, the light reflected by the front end surface 61 </ b> A of the inclined shielding portion 61 is reflected by the cover member 15 without entering the imaging range 42 of the camera lens 24, and then proceeds in a direction deviating from the camera lens 24. Since the tip surface 61A is formed in an arc shape, the light reflected by the tip surface 61A spreads and travels so as to be dispersed.

  As described above, even when the inclined shielding portion 61 is used, light incident on the camera lens 24 can be reduced while suppressing the influence on the overall appearance and design as in the above embodiment.

(Modification 2)
Next, Modification Example 2 of the shielding member will be described with reference to FIGS. In addition, description is abbreviate | omitted by attaching | subjecting the same code | symbol to the component same as embodiment mentioned above.
The shielding member of this example constitutes a one-stage shielding structure (hereinafter referred to as a shielding part 71). The shielding part 71 is formed in a plate shape on the bottom surface 32, and projects along the direction away from the bottom surface 32 in the space S. In the space S, the shielding part 71 is provided above the camera lens 24 so as to extend in the left-right direction of the main body case 10. The front end surface 72 of the shielding part 71 is formed in an arc shape. Further, the distal end portion including the distal end surface 72 of the shielding portion 71 is provided outside the imaging range 42 of the camera lens 24.

  As shown in FIG. 11, the light traveling from the downlight 41 toward the camera lens 24 is shielded by the upper surface 73 of the shielding portion 71, for example, as indicated by the light L7. Further, the light emitted from the downlight 41 and reflected by the front end surface 72 of the shielding portion 71 is incident on the camera lens 24 after being reflected by the inner surface of the cover member 15 as indicated by light L8, for example. In addition, since the front end surface 72 is formed in an arc shape, the light reflected by the front end surface 72 spreads and travels so as to be dispersed in the left-right direction.

  According to such a configuration, as shown in FIG. 11, most of the light of the downlight 41 that enters the camera lens 24 from above is shielded by the upper surface 73 of the shielding portion 71. Thereby, the light incident on the camera lens 24 is reflected only by the front end surface 72 of the shielding part 71 and further reflected by the inner surface of the cover member 15. This light is reflected on the inner surface of the cover member 15 after being dispersed left and right by the arcuate tip surface 72 of the shielding portion 71. For this reason, as shown in FIG. 12, a bright-line ghost 82 may appear in the image 81 captured by the camera lens 24, but the ghost is thin and inconspicuous. Thus, even when the shielding part 71 is used, it is possible to reduce the light incident on the camera lens 24 while suppressing the influence on the overall appearance and design.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimension, numerical value, form, number, location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, in the above-described embodiment and each modified example, the configuration example in which the concave portion 31 is provided on the front surface 11 of the front member 10a and the opening portion and the shielding member are provided on the bottom surface 32 of the concave portion 31 has been described. For example, a configuration in which the cover member 15 is attached to the front surface 11 of the front member 10 a without providing the recess 31, and an opening or a shielding member is provided on the area surface of the front surface 11 partitioned by the cover member 15 may be employed. .

DESCRIPTION OF SYMBOLS 1: Entrance child machine with a camera, 10: Main body case, 11: Front surface (an example of 1st surface), 13: Opening part, 14A: 1st shielding part (an example of shielding member), 14B: 2nd shielding member (Example of shielding member), 15: Cover member, S: Space, 22: Tilt base (Example of tilt mechanism), 23: Image sensor, 24: Camera lens, 31: Recess, 32: Bottom surface, 33A, 33B: Tip Surface, 41: downlight, 42: imaging range, 61: inclined shielding part (an example of a shielding member), 61A: tip surface, 62: upper end part, 63: lower end part, 71: shielding part (an example of shielding member), 72: Tip surface

Claims (8)

A camera lens,
A main body case formed of a front member and a rear member, wherein an opening for exposing the camera lens is formed on the front surface of the front member;
A translucent cover member that covers the periphery of the opening and is mounted on the front surface;
A shielding member that is formed in an internal region defined by the cover member on the front surface and shields at least a part of light emitted from a light source located above the main body case and incident on the camera lens;
A tilt mechanism that is arranged inside an accommodation space formed by the front member and the rear member, and that can change the direction of the imaging range of the camera using the camera lens;
With
The shielding member is formed on the front surface so as to protrude along a direction away from the front surface in the inner region.
Entrance child machine with camera. The entrance unit with a camera according to claim 1, wherein the shielding member is disposed between the opening and the light source when viewed from a direction perpendicular to the front surface . The front-end | tip part of the said shielding member is an entrance child machine with a camera of Claim 1 or Claim 2 arrange | positioned outside the imaging range of the camera using the said camera lens. The shielding member is
A first shielding part formed in a plate shape on the front surface so as to protrude along a direction away from the front surface in the internal region;
A second shielding part formed in a plate shape so as to protrude along the direction away from the front surface in the internal region at a position closer to the light source than the first shielding part on the front surface; ,
The entrance child machine with a camera of Claim 1 or Claim 2 which has these. The tip portion of the first shielding part, the second from the front end portion of the shield portion is arranged at a position closer to the front surface of the interior region, the entrance door station with a camera according to claim 4. The camera according to claim 4 or 5, wherein a distal end portion of the first shielding portion and a distal end portion of the second shielding portion are arranged outside an imaging range of a camera using the camera lens. Entrance door extension machine. 3. The camera according to claim 1, wherein the front end surface of the shielding member has an inclined surface that is inclined from the upper end portion toward the lower end portion so as to approach the front surface in the internal region. Entrance door extension machine. The entrance part with a camera according to claim 7 , wherein an upper end part and a lower end part of the shielding member are disposed outside an imaging range of a camera using the camera lens.