Intercom equipment

Abstract

To provide an intercom device that makes it possible to operate pan / tilt of a camera even after installation on a wall or the like and adjust a camera's image angle.SOLUTION: When a pan operation unit 32 that is exposed on the front of the body case is turned in the left and right direction, a pan adjusting member 30 is turned and a first connection piece 25 is linked to the pan adjusting member 30, an angle adjusting member 20 tilts about the vertical direction as an axis as the first connection piece 25 moves, and thereby a pan angle of a camera 10 is adjusted. When a tilt operation unit 37 that is exposed on the front of the body case is turned in the vertical direction, a tilt adjusting member 35 is turned and a second connection piece 26 is linked to the tilt adjusting member 35, the angle adjusting member 20 tilts about the left and right direction as an axis as the second connection piece 26 moves, and thereby a tilt angle of the camera 10 is adjusted.SELECTED DRAWING: Figure 8

Description

[Technical Field]

[0001] The present invention relates to an intercom device equipped with a camera for capturing an image of a visitor. [Background technology]

[0002] Conventionally, intercom devices such as intercom handsets that are installed at entrances or the like to allow visitors to call residents are equipped with cameras for capturing images of visitors. Some of these intercom devices have cameras that can be panned and tilted. For example, the intercom device described in Patent Document 1 has an operation knob for panning and tilting the camera located on the back of the main body case, making it possible to adjust the camera orientation to suit the installation environment. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2011-49989 Summary of the Invention [Problem to be solved by the invention]

[0004] In conventional intercom devices that allow for pan / tilt camera operation, the operation knob is provided on the back of the main body case as mentioned above, so it is naturally not possible to adjust the camera's imaging angle after installation on a wall, etc. However, even if adjustments are made and installation is done, there is still a desire to be able to change the camera's orientation after installation.

[0005] Therefore, the present invention has been made in consideration of the above problems, and aims to provide an intercom device that allows the camera to be panned / tilted even after installation on a wall surface, etc., and that allows the camera's imaging angle to be adjusted. [Means for solving the problem]

[0006] In order to achieve the above object, the present invention provides an intercom device in which a camera that captures an image in front of the main body case and an operation structure for operating the pan / tilt angle of the camera are provided within a main body case, the operation structure including an angle adjustment member that is integrated with the camera on the rear side of the camera, a pan adjustment member that is connected to the angle adjustment member and is pivotally supported on the main body case so as to be rotatable about an axis in the up-down direction, and a tilt adjustment member that is connected to the angle adjustment member and is pivotally supported on the main body case so as to be rotatable about an axis in the left-right direction. The angle adjustment member is provided with a first connecting protrusion that protrudes in the up-down direction and a second connecting protrusion that protrudes in the left-right direction, while the pan adjustment member is provided with a pan operation section exposed on the front surface of the main body case and a first connecting section to which the first connecting protrusion is connected, and the first connecting section extends in the front-rear direction on both the left and right sides of the first connecting protrusion, and when the pan adjustment member rotates around an axis in the up-down direction, it interferes with the first connecting protrusion to link the first connecting protrusion, and when the tilt adjustment member rotates around an axis in the left-right direction, it interferes with the first connecting protrusion The tilt adjustment member is provided with a tilt operation portion exposed on the front surface of the main body case and a second connection portion to which the second connection protrusion is connected, and the second connection portion extends in the front-rear direction on both the top and bottom of the second connection protrusion, and when the tilt adjustment member rotates around an axis in the left-right direction, it interferes with the second connection protrusion to link the second connection protrusion, and when the pan adjustment member rotates around an axis in the up-down direction, it moves in the front-rear direction of the second connection protrusion without interfering with the second connection protrusion. When the pan operation unit is rotated left or right, the pan adjustment member rotates and the first connecting protrusion moves in conjunction with the first connecting protrusion, and as the first connecting protrusion moves, the angle adjustment member tilts around an axis in the vertical direction, thereby adjusting the pan angle of the camera. On the other hand, when the tilt operation unit is rotated up or down, the tilt adjustment member rotates and the second connecting protrusion moves in conjunction with the second connecting protrusion, and as the second connecting protrusion moves, the angle adjustment member tilts around an axis in the horizontal direction, thereby adjusting the tilt angle of the camera. [Effects of the Invention]

[0007] According to the present invention, when the pan operation unit exposed on the front of the main body case is rotated left or right, the pan adjustment member rotates and the first connecting protrusion moves in conjunction, and as the first connecting protrusion moves, the angle adjustment member tilts about an axis in the vertical direction, thereby adjusting the pan angle of the camera, while when the tilt operation unit exposed on the front of the main body case is rotated up or down, the tilt adjustment member rotates and the second connecting protrusion moves in conjunction, and as the second connecting protrusion moves, the angle adjustment member tilts about an axis in the horizontal direction, thereby adjusting the tilt angle of the camera. Therefore, even after installation on a wall or the like, it is possible to operate the pan / tilt of the camera from the front side of the main body case, and it is possible to provide an intercom device in which the imaging angle of the camera can be adjusted. [Brief explanation of the drawings]

[0008] [Figure 1] FIG. 2 is an explanatory diagram showing the intercom handset from the front. [Figure 2] FIG. 10 is an explanatory diagram showing the main body case from the front with the decorative cover removed. [Figure 3] FIG. 2 is an explanatory diagram showing the intercom handset from the rear. [Figure 4] FIG. 2 is a perspective explanatory view showing the rear side of the front case. [Figure 5] FIG. 2 is a perspective explanatory view showing the front side of the rear case. [Figure 6] FIG. 2 is an explanatory diagram showing the camera and operation structure in an assembled state from the front. [Figure 7] 1A and 1B are perspective explanatory views showing the camera and operation structure in an assembled state, in which FIG. 1A shows the camera from the front side and FIG. 1B shows the camera from the rear side. [Figure 8] FIG. 2 is an explanatory perspective view showing the camera and the operating structure in exploded form from the front. [Figure 9] FIG. 2 is an explanatory perspective view showing the camera and the operating structure disassembled from the rear side. [Figure 10] 2 is an explanatory diagram showing an enlarged view of a camera portion in a cross section taken along line AA in FIG. 1. FIG. [Figure 11]FIG. 2 is an explanatory diagram showing a cross section along line BB in FIG. [Figure 12] 1A and 1B are explanatory diagrams showing the camera and operation structure when the camera is facing forward, where (a) shows the bottom and (b) shows the left side. [Figure 13] 10A to 10C are explanatory diagrams showing the camera and operation structure when the camera is facing left, where (a) shows the front, (b) shows the bottom, and (c) shows the left side. [Figure 14] 13. (a) is an explanatory diagram showing a cross section taken along line CC in FIG. 13, and (b) is an explanatory diagram showing a cross section taken along line DD in FIG. [Figure 15] 1A to 1C are explanatory diagrams showing the camera and operation structure when the camera is facing upward, where (a) shows the front, (b) shows the bottom, and (c) shows the left side. [Figure 16] 15, and (b) is an explanatory diagram showing a cross section taken along line FF in FIG. [Figure 17] 10A, 10B, and 10C are explanatory diagrams showing the camera and operation structure when the camera is facing diagonally upward to the left, where (a) shows the front, (b) shows the back, and (c) shows the top. DETAILED DESCRIPTION OF THE INVENTION

[0009] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An intercom slave unit according to an embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

[0010] FIG. 1 is an explanatory diagram showing the intercom handset 1 from the front. FIG. 2 is an explanatory diagram showing the main body case from the front with the decorative cover 4 removed. FIG. 3 is an explanatory diagram showing the intercom handset 1 from the rear. FIG. 4 is an explanatory perspective view showing the rear side of the front case 2. FIG. 5 is an explanatory perspective view showing the front side of the rear case 3. FIG. 6 is an explanatory diagram showing the camera 10 and operation structure in an assembled state from the front. FIG. 7 is an explanatory perspective view showing the camera 10 and operation structure in an assembled state, with (a) showing it from the front and (b) showing it from the rear. FIG. 8 is an explanatory perspective view showing the camera 10 and operation structure in an exploded view from the front. FIG. 9 is an explanatory perspective view showing the camera 10 and operation structure in an exploded view from the rear. FIG. 10 is an explanatory enlarged view of the camera 10 in a cross section taken along line AA in FIG. 1. FIG. 11 is an explanatory view showing a cross section taken along line BB in FIG. 1. FIG. 12 is an explanatory diagram showing the camera 10 and its operating structure when the camera 10 faces forward, with (a) showing the bottom and (b) showing the left side. FIG. 13 is an explanatory diagram showing the camera 10 and its operating structure when the camera 10 faces left, with (a) showing the front, (b) showing the bottom, and (c) showing the left side. FIG. 14(a) is an explanatory diagram showing a cross section taken along line CC in FIG. 13, and FIG. 14(b) is an explanatory diagram showing a cross section taken along line DD in FIG. 13. FIG. 15 is an explanatory diagram showing the camera 10 and its operating structure when the camera 10 faces upward, with (a) showing the front, (b) showing the bottom, and (c) showing the left side. FIG. 16(a) is an explanatory diagram showing a cross section taken along line EE in FIG. 15, and FIG. 16(b) is an explanatory diagram showing a cross section taken along line FF in FIG. 13. FIG. 17 is an explanatory diagram showing the camera 10 and the operating structure when the camera 10 is facing diagonally upward to the left, where (a) shows the front, (b) shows the back, and (c) shows the top.

[0011] The intercom handset 1 includes a main body case consisting of a front case 2 and a rear case 3, and a decorative cover 4 attached to the front of the main body case. A camera window 5 is provided at the top front of the main body case, and a camera 10 is installed inside the main body case so that a lens 6 is exposed through the camera window 5. A microphone 7 for calls is provided to the right of the camera window 5. A speaker 8 for calls and a call button 9 that a visitor operates to call the resident are provided below the camera window 5. The intercom handset 1 is mounted on a wall, such as the entrance to a residence, via a mounting base 60. When a visitor operates the call button 9, the intercom handset 1 calls an intercom master unit (not shown) installed in the residence and activates the camera 10 to capture an image of the visitor. Images captured by the camera 10 are displayed on the monitor of the intercom master unit. Reference numeral 61 denotes a camera cover attached to the decorative cover 4 so as to cover the front of the camera window 5.

[0012] Here, a structure for panning / tilting the camera 10, which is the main part of the present invention, will be described. Camera 10 has a lens 6, a lens holding member 19 that holds lens 6, a camera holder 11 that houses lens holding member 19, and a camera board 12 that has various elements mounted thereon and is screwed to lens holding member 19. The operating structure for panning and tilting camera 10 includes an angle adjustment member 20 disposed on the rear side of camera board 12, and a pan adjustment member 30 and a tilt adjustment member 35 that are connected to angle adjustment member 20.

[0013] The camera holder 11 includes a main body 13 capable of accommodating a lens holding member 19. The main body 13 is formed in a dome shape that bulges forward and is open at the rear, and a spherical portion 13a is formed on the surface of the main body 13. A lens hole 14 for exposing the lens 6 is formed in the front portion of the main body 13. The lens holding member 19 is held in a state in which the lens 6 is exposed in the lens hole 14 via an elastically deformable packing 18 (as shown in FIGS. 10 and 11). A first positioning piece 15a protruding vertically upward from the center line of the lens 6 and a second positioning piece 15b protruding horizontally to the right from the center line of the lens 6 are provided on the periphery of the opening at the rear end of the main body 13. In addition, three fixing legs 16, 16... that protrude rearward are provided at the rear end of main body 13, and when camera board 12 is screwed to lens holding member 19, each fixing leg 16 protrudes rearward beyond camera board 12 through a through-hole 17 provided in camera board 12. Note that spherical portion 13a is a spherical surface centered at a predetermined first position on the center line of lens 6.

[0014] The angle adjustment member 20 is a synthetic resin member including a circular cover-shaped base 21 that bulges rearward and three legs 22, 22... that protrude forward from the periphery of the base 21. The rear surface of the base 21 is spherically shaped, and a rear-operable knob 23 that protrudes rearward is provided at the top of the rear surface of the base 21 (the point that bulges furthest rearward). Four positioning protrusions 24, 24... are provided around the rear-operable knob 23 on the rear surface of the base 21. A first connecting piece 25 that protrudes vertically downward is provided on the periphery of the base 21 at a position vertically downward from the rear-operable knob 23, while a second connecting piece 26 that protrudes horizontally left is provided on the periphery of the base 21 at a position horizontally to the left of the rear-operable knob 23. Both the first connecting piece 25 and the second connecting piece 26 are formed in the shape of a regular square prism. The first connecting piece 25 has a front surface, a back surface, both left and right side surfaces, and a bottom surface, while the second connecting piece 26 has a front surface, a back surface, both top and bottom surfaces, and a left side surface. Additionally, the tip surface of each leg 22 has an insertion hole 27 into which the fixed leg 16 of the camera holder 11 can be loosely inserted. The depth of each insertion hole 27 is deeper than the length of the fixed leg 16 that protrudes rearward from the camera board 12, so that when integrated with the camera holder 11, a gap is formed between the bottom of the insertion hole 27 and the tip of the fixed leg 16. The diameter of the insertion hole 27 is slightly larger than the diameter of the fixed leg 16. The front surface of the base 21 is provided with support ribs 28, 28 that protrude forward. When integrated with the camera holder 11, the tips of the support ribs 28, 28 are close to the rear surface of the camera board 12, stabilizing the attachment of the angle adjustment member 20.

[0015] The pan adjustment member 30 is a synthetic resin component including a pan rotation shaft 31 extending in the vertical direction (i.e., the axial direction), a pan operation unit 32 integrally molded on the lower end of the pan rotation shaft 31, and a first passageway 33 integrally molded on the upper end of the pan rotation shaft 31. The pan operation unit 32 is molded in the shape of a semicircular plate whose thickness extends vertically and protrudes forward from the pan rotation shaft 31, and its front surface serves as an operation surface. The first passageway 33 extends rearward from the pan rotation shaft 31 and has a pair of left and right wall portions extending in the front-to-rear direction and a bottom portion connecting the lower ends of the wall portions. The left-to-right width of the first passageway 33 (i.e., the width of the gap between the wall portions) is approximately the same as the left-to-right width of the first connecting piece 25, allowing the first connecting piece 25 to be inserted into the first passageway 33 from above. By inserting the first connecting piece 25 into the first passage portion 33, the first passage portion 33 holds the first connecting piece 25 in a state that restricts movement in the left-right direction while allowing movement in the front-rear direction. Note that the first passage portion 33 does not extend linearly in the front-rear direction, but extends in an arc shape when viewed from the side, following the movement trajectory of the first connecting piece 25 that accompanies the tilt operation of the camera 10.

[0016] The tilt adjustment member 35 is identical to the pan adjustment member 30 rotated 90° to the left around an axis in the front-to-rear direction. It includes a tilt rotation shaft 36 extending in the left-to-right direction (axial direction), a tilt operation unit 37 integrally molded on the left end of the tilt rotation shaft 36, and a second passage portion 38 integrally molded on the right end of the tilt rotation shaft 36. The tilt operation unit 37 is molded in a semicircular plate shape with a thickness in the left-to-right direction that protrudes forward from the tilt rotation shaft 36, and its front surface serves as an operation surface. The second passage portion 38 extends rearward from the tilt rotation shaft 36 and has a pair of upper and lower wall portions extending in the front-to-rear direction and a left portion connecting the left ends of the wall portions. It is molded in a passage shape that opens to the right. The vertical width of the second passage portion 38 is approximately the same as the vertical width of the second connecting piece 26, allowing the second connecting piece 26 to be inserted into the second passage portion 38 from the right. Then, by inserting the second connecting piece 26 into the second passage section 38, the second passage section 38 holds the second connecting piece 26 in a state that restricts movement in the up-down direction while allowing movement in the front-to-rear direction. Note that, like the first passage section 34, the second passage section 38 does not extend linearly in the front-to-rear direction, but rather extends in an arc when viewed from above along the movement trajectory of the second connecting piece 26 that accompanies the panning operation of the camera 10.

[0017] Meanwhile, on the rear surface of the front case 2, a holding wall 40 that holds the camera holder 11 protrudes rearward along the periphery of the camera window 5 as a structure that enables pan / tilt operations of the camera 10. When the camera 10 is installed in the main body case, the inner surface of the holding wall 40 abuts against the spherical portion 13a of the camera holder 11, and the abutting state between the holding wall 40 and the spherical portion 13a is maintained even during pan / tilt operations of the camera 10. Also, below the camera window 5 in the front case 2, a pan operation window 41 for exposing the pan operation unit 32 is opened, and on the periphery of the opening of the pan operation window 41 on the rear surface of the front case 2, a pan bearing portion 42 that is U-shaped when viewed from above and opens rearward is provided for supporting the pan rotation shaft 31 so that the pan rotation shaft 31 is rotatable about an axis in the vertical direction. Meanwhile, a tilt operation window 43 for exposing the tilt operation unit 37 is opened to the left of the camera window 5 in the front case 2, and a tilt bearing portion 44 is provided around the periphery of the opening of the tilt operation window 43 on the rear surface of the front case 2. The tilt bearing portion 44 is U-shaped in a side view and opens rearward, and supports the tilt rotation shaft 36 rotatably about an axis in the left-right direction. In addition, a pair of restriction walls 45, 45 protrude rearward above and to the right of the camera window 5 on the rear surface of the front case 2. These restriction walls 45 do not hold the first positioning piece 15a or the second positioning piece 15b, but are located on the left and right or above and below both of the first positioning piece 15a and the second positioning piece 15b when the camera 10 is assembled, and serve to roughly position the position of the camera 10. The pan operation window 41 and the tilt operation window 43 are opened in locations that will be covered by the decorative cover 4 attached to the front case 2.

[0018] Furthermore, a rear operation window 46 for exposing the rear operation knob 23 is opened in a location on the rear case 3 that will be behind the camera window 5 when the rear case 3 is assembled to the front case 2. A rear guide portion 47, whose front surface is a spherical surface that can abut against the rear surface of the base 21, is provided around the rear operation window 46 on the front surface of the rear case 3 as a structure that enables pan / tilt operations of the camera 10, and guides the movement of the base 21 in association with pan / tilt operations of the camera 10 while remaining in contact with the rear surface of the base 21. Furthermore, a large number of positioning recesses 48 (more than the number of positioning protrusions 24) are provided on the front surface of the rear guide portion 47, with which the positioning protrusions 24 can be engaged. In addition, a pan shaft support piece 49 protrudes forward below rear operation window 46 on the front surface of rear case 3. This piece abuts against pan rotation shaft 31 from the rear side when assembled to front case 2, pivotally supports pan rotation shaft 31, and restricts rearward movement of pan rotation shaft 31. Meanwhile, a tilt shaft support piece 50 protrudes forward on the left side of rear operation window 46 on the front surface of rear case 3. This piece abuts against tilt rotation shaft 36 from the rear side when assembled to front case 2, pivotally supports tilt rotation shaft 36, and restricts rearward movement of tilt rotation shaft 36.

[0019] To install the camera 10 as described above to enable pan / tilt operation, the camera holder 11 is placed over the lens holding member 19, to which the camera board 12 has been previously screwed, from the front, and the fixed legs 16, 16·· are inserted into the through-holes 17, 17·· to house the lens holding member 19 within the main body 13, thereby constructing the camera 10. First, on the rear side of the front case 2, the first positioning piece 15a and the second positioning piece 15b are positioned between the restriction walls 45, 45, respectively, and the spherical portion 13a of the camera holder 11 is brought into contact with the holding wall 40, thereby positioning the camera 10 so that the lens 6 is exposed within the camera window 5. Next, the fixed legs 16, 16·· that protrude rearward beyond the camera board 12 are loosely inserted into the loose insertion holes 27, 27·· to place the angle adjustment member 20 on the rear surface of the camera board 12, and the camera holder 11 and the angle adjustment member 20 are integrated together. Furthermore, pan adjustment member 30 is attached by holding pan rotation shaft 31 in pan bearing portion 42 while pan operation unit 32 protrudes forward from pan operation window 41 and positioning first connecting piece 25 in first passage portion 33. Meanwhile, tilt operation unit 37 protrudes forward from tilt operation window 43 and positioning second connecting piece 26 in second passage portion 38, holding tilt rotation shaft 36 in tilt bearing portion 44, and attaching tilt adjustment member 35. Finally, rear operation knob 23 protrudes rearward from rear operation window 46, and rear case 3 is assembled to front case 2. Camera 10 is sandwiched from the front and rear between front case 2 and rear case 3, and is installed so that it can be panned and tilted.

[0020] With the camera 10 installed in this manner, the pan rotation shaft 31 is sandwiched from the front and rear by the pan bearing portion 42 and the pan shaft support piece 49, and is supported rotatably around a vertical axis passing through the center of the spherical portion 13a of the camera holder 11. The first connecting piece 25 is sandwiched from the left and right by the wall portion of the first passage portion 33 of the pan adjustment member 30, and is located at a position eccentric to the pan rotation shaft 31. When the position of the pan adjustment member 30 changes in response to the rotation of the pan operation unit 32, the first connecting piece 25 interferes with the first passage portion 33 and moves in conjunction with the change in position of the pan adjustment member 30 (moves around the pan rotation shaft 31), whereas when the position of the tilt adjustment member 35 changes in response to the rotation of the tilt operation unit 37, the first connecting piece 25 moves in the front-to-rear direction within the first passage portion 33 without interfering with the first passage portion 33. On the other hand, tilt rotation shaft 36 is sandwiched from the front and rear by tilt bearing portion 44 and tilt shaft support piece 50, and is supported rotatably around a horizontal axis that passes through the center of spherical portion 13a of camera holder 11. Also, second connecting piece 26 is sandwiched from above and below by the wall portion of second passage portion 38 of tilt adjustment member 35, and is located at a position eccentric to tilt rotation shaft 36, so that when the position of pan adjustment member 30 changes in response to rotation of pan operation unit 32, second connecting piece 26 moves in the front-to-rear direction within second passage portion 38 without interfering with second passage portion 38, whereas when the position of tilt adjustment member 35 changes in response to rotation of tilt operation unit 37, second passage portion 38 interferes with second connecting piece 26 and moves in conjunction with the change in position of tilt adjustment member 35 (moves around tilt rotation shaft 36). Furthermore, the positioning protrusions 24, 24... of the angle adjustment member 20 are engaged with either one of the positioning recesses 48, 48... of the rear case 3, and the camera 10 is held at a predetermined pan / tilt angle by the elastic force of the packing 18 or the like. The center line of the lens 6, the axis of the pan rotation shaft 31, and the axis of the tilt rotation shaft 36 intersect at the center of the spherical portion 13a (the above-mentioned first position), and the rotation axis of the pan adjustment member 30 becomes the rotation axis of the camera holder 11 in the pan direction, and the rotation axis of the tilt adjustment member 35 becomes the rotation axis of the camera holder 11 in the tilt direction.

[0021] To adjust the pan / tilt angle of the camera 10 (i.e., to pan / tilt the camera 10), the pan operation unit 32 and / or tilt operation unit 37 protruding forward from the main body case may be operated. To rotate the camera 10 in the pan direction, the pan operation unit 32 may be rotated left or right. For example, to point the camera 10 leftward, the pan operation unit 32 may be rotated leftward as shown in FIG. 13 . This causes the pan adjustment member 30 to change its position so that the first passage portion 33 tilts rightward about the pan rotation shaft 31, as shown in FIG. 14( a). This causes the first connecting piece 25 to move in conjunction with the change in position of the pan adjustment member 30. Meanwhile, the second connecting piece 26 moves rearward within the second passage portion 38 without changing the position of the tilt adjustment member 35, as shown in FIG. 14( b). Therefore, angle adjustment member 20, and therefore camera 10, changes its position to face left while maintaining the abutting state between spherical portion 13a and holding wall 40, and the pan angle of camera 10 is adjusted.

[0022] On the other hand, to rotate camera 10 in the tilt direction, tilt operation unit 37 is rotated up or down. For example, to point camera 10 upward, tilt operation unit 37 is rotated upward as shown in FIG. 15. Then, as shown in FIG. 16(a), tilt adjustment member 35 changes its position so that second passage portion 38 tilts downward about tilt rotation shaft 36, and second connecting piece 26 moves in conjunction with the change in position of tilt adjustment member 35. Meanwhile, first connecting piece 25 moves forward within first passage portion 33 without changing the position of pan adjustment member 30, as shown in FIG. 16(b). Therefore, angle adjustment member 20, and therefore camera 10, change their position upward while maintaining the abutment state between spherical portion 13a and holding wall 40, and the tilt angle of camera 10 is adjusted.

[0023] The angle of the camera 10 is not adjusted only in the pan direction or only in the tilt direction. By operating both the pan adjustment member 30 and the tilt adjustment member 35, the camera 10 can be panned and tilted diagonally upward to the left ( FIG. 17 ) or diagonally downward to the right. This diagonal operation (particularly when the pan adjustment member 30 and the tilt adjustment member 35 are operated simultaneously) applies a load to the angle adjustment member 20 in the direction of rotation about the front-to-rear direction. However, because the first connecting piece 25 and the second connecting piece 26 are positioned within the first passage portion 33 and the second passage portion 38, respectively, as described above, the angle adjustment member 20, and therefore the camera 10, does not rotate about the front-to-rear direction. Furthermore, the pan angle and tilt angle of the camera 10 can be adjusted in the same manner as described above by operating the rear operation knob 23 instead of the pan adjustment member 30 or the tilt adjustment member 35. Furthermore, when the camera 10 is panned / tilted, the positioning protrusions 24, 24... engage with other positioning recesses 48, 48..., thereby holding the camera 10 at the adjusted angle. In addition, if the decorative cover 4 is attached after panning / tilting the camera 10, the pan adjustment member 30, pan operation window 41, tilt adjustment member 35, and tilt operation window 43 can be covered with the decorative cover 4.

[0024] Intercom slave 1 having the above-described configuration has an operating structure for panning / tilting camera 10, in which angle adjustment member 20 is provided on the rear side of camera board 12 and integrated with camera holder 11 disposed in front of camera board 12, and angle adjustment member 20 is provided with first connecting piece 25 protruding vertically downward and second connecting piece 26 protruding horizontally to the left. In addition, pan adjustment member 30 is provided on the main body case and is pivotally supported on a vertical axis, and pan adjustment member 30 is provided with pan operation section 32 exposed in pan operation window 41 opened in front case 2, and first passage section 33 which is a passage extending in the front-rear direction and into which first connecting piece 25 can be inserted from above. Meanwhile, the main body case is provided with tilt adjustment member 35 that is pivotally supported about an axis in the left-right direction, and tilt adjustment member 35 is provided with tilt operation section 37 that is exposed in tilt operation window 43 opened in front case 2, and second passage section 38 that is a passage extending in the front-rear direction and into which second connecting piece 26 can be inserted from the right. When pan operation section 32 is rotated left-right, pan adjustment member 30 rotates about an axis in the up-down direction, and first connecting piece 25 moves in conjunction with first passage section 33 in a manner that interferes with it, while second connecting piece 26 moves in the front-rear direction within second passage section 38 without interfering with it, causing angle adjustment member 20 to tilt about an axis in the up-down direction, and ultimately adjusting the pan angle of camera 10. Furthermore, when tilt operation unit 37 is rotated in the up-down direction, tilt adjustment member 35 rotates about an axis in the left-right direction, and second connecting piece 26 moves in conjunction with second passage portion 38 while interfering with it, while first connecting piece 25 moves in the front-rear direction within first passage portion 33 without interfering with it, causing angle adjustment member 20 to tilt about an axis in the left-right direction, thereby adjusting the tilt angle of camera 10. Therefore, even after installation on a wall or the like, intercom handset 1 can be configured such that camera 10 can be panned / tilted from the front side of the main body case, and the imaging angle of camera 10 can be adjusted.

[0025] The intercom device of the present invention is not limited to the above-described embodiment, and the overall configuration of the intercom device, as well as the configuration of the camera and the configuration related to adjusting the imaging angle, can be appropriately modified as needed within the scope of the present invention.

[0026] For example, in the above embodiment, the connecting parts provided on the pan adjustment member and the tilt adjustment member are both formed in the shape of a passage extending in the front-to-rear direction, but it is also possible to configure each connecting part as a pair of rods extending in the front-to-rear direction rather than in the shape of a passage. Furthermore, in the above embodiment, the first and second connecting projections are formed in a square pillar shape, but there is no problem if they are cylindrical projections. Furthermore, in the above embodiment, the first connecting protrusion protrudes downward and the pan adjustment member is provided on the underside of the camera, but it is also possible for the first connecting protrusion to protrude upward and for the pan adjustment member to be provided on the upper side of the camera.Similarly, it is also possible for the second connecting protrusion to protrude to the right side instead of the left side and for the tilt operation member to be provided on the right side instead of the left side of the camera.

[0027] Furthermore, in the above embodiment, the camera is configured to be able to be panned / tilted from the rear side of the main body case, but it may be configured so that the camera can be panned / tilted only from the front side of the main body case. Furthermore, in the above embodiment, the rear surface of the base of the angle adjustment member is brought into contact with the rear guide portion of the rear case to improve the stability of operation during pan / tilt operations, but this configuration is not necessary as long as the pan adjustment member and tilt adjustment member are pivotally supported.

[0028] Furthermore, in the above embodiment, as components for enabling the camera to be held at the desired pan / tilt angles, a positioning protrusion is provided on the angle adjustment member and a positioning recess is provided on the rear guide member, but for example, a member for holding the camera in a predetermined position may be provided separately near the pan adjustment member or tilt adjustment member, and the specific configuration for enabling the camera to be held at the desired pan / tilt angles may also be designed and modified as appropriate. In addition, although the above embodiment describes an intercom handset, which is an example of an intercom device, the present invention can also be suitably applied to other intercom devices, such as an intercom master unit or a front door handset of an apartment building intercom system, as long as it is equipped with a camera. [Explanation of symbols]

[0029] 1··Intercom handset (intercom device), 2··Front case (main body case), 3··Rear case (main body case), 6··Lens, 10··Camera, 11··Camera holder, 12··Camera board, 20··Angle adjustment member, 25··First connecting piece (first connecting protrusion), 26··Second connecting piece (second connecting protrusion), 30··Pan adjustment member, 31··Pan rotation shaft, 32··Pan operation unit, 33··First passage unit (first connecting unit), 35··Tilt adjustment member, 36··Tilt rotation shaft, 37··Tilt operation unit, 38··Second passage unit (second connecting unit), 41··Pan operation window, 42··Pan bearing unit, 43··Tilt operation window, 44··Tilt bearing unit, 49··Pan shaft support piece, 50··Tilt shaft support piece.

Claims

[Claim 1] An intercom device having a camera in a main body case for capturing an image in front of the main body case and an operating structure for operating the pan / tilt angle of the camera, The operation structure includes an angle adjustment member integrated with the camera on the rear side of the camera, a pan adjustment member connected to the angle adjustment member and pivotally supported on the main body case so as to be rotatable about an axis in the up-down direction, and a tilt adjustment member connected to the angle adjustment member and pivotally supported on the main body case so as to be rotatable about an axis in the left-right direction, The angle adjustment member is provided with a first connecting protrusion that protrudes in the up-down direction and a second connecting protrusion that protrudes in the left-right direction, the pan adjustment member is provided with a pan operation portion exposed on a front surface of the main body case and a first connecting portion to which the first connecting protrusion is connected; the first connecting portion extends in the front-rear direction on both the left and right sides of the first connecting protrusion, and when the pan adjustment member rotates about an axis in the up-down direction, it interferes with the first connecting protrusion to move the first connecting protrusion in conjunction with the first connecting protrusion, and when the tilt adjustment member rotates about an axis in the left-right direction, it does not interfere with the first connecting protrusion and allows the first connecting protrusion to move in the front-rear direction, the tilt adjustment member is provided with a tilt operation portion exposed on a front surface of the main body case and a second connecting portion to which the second connecting protrusion is connected, the second connecting portion extends in the front-rear direction on both the upper and lower sides of the second connecting protrusion, and when the tilt adjustment member rotates about an axis in the left-right direction, it interferes with the second connecting protrusion to move the second connecting protrusion in conjunction with the tilt adjustment member, and when the pan adjustment member rotates about an axis in the up-down direction, it does not interfere with the second connecting protrusion and allows the second connecting protrusion to move in the front-rear direction, When the pan operation unit is rotated left and right, the pan adjustment member rotates and the first connecting protrusion moves in conjunction with the rotation, and the angle adjustment member tilts about an axis in the vertical direction as the first connecting protrusion moves, thereby adjusting the pan angle of the camera. This intercom device is characterized in that when the tilt operating unit is rotated in the vertical direction, the tilt adjustment member rotates and the second connecting protrusion moves in conjunction with it, and as the second connecting protrusion moves, the angle adjustment member tilts around an axis in the horizontal direction, thereby adjusting the tilt angle of the camera.

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