Intercom equipment

Abstract

This intercom system provides a stable microphone placement in the microphone mounting area, resulting in stable sound quality. [Solution] A microphone mounting section 40 is provided projecting to the rear of the front case 21, which is formed in a cylindrical shape with an open rear end and capable of housing and installing a microphone 25. A microphone cover section 52 is also provided to cover the opening of the microphone mounting section 40. The microphone 25 housed in the microphone mounting section 40 is then held in place from both the front and rear by the rear surface of the front case 21 and the microphone cover section 52.

Description

Technical Field

[0001] The present invention relates to an intercom device such as a collective entrance machine.

Background Art

[0002] Conventionally, in an intercom device such as a collective entrance machine as described in Patent Document 1, a microphone unit and a speaker unit for a visitor and a resident to talk to each other are provided.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In a conventional general intercom device, a cylindrical microphone installation part is provided inside the main body case of the intercom device, and the microphone part is configured by fitting a microphone into the microphone installation part. However, simply fitting the microphone into the microphone installation part easily causes variations in the fitting state of the microphone, and as a result, problems such as deterioration of sound quality may occur.

[0005] Therefore, the present invention has been made in view of the above problems, and aims to provide an intercom device in which the installation state of the microphone in the microphone installation part is stable, and as a result, the sound quality can also be stabilized.

Means for Solving the Problems

[0006] To achieve the above objective, the invention described in claim 1 of the present invention is an intercom device in which a microphone is installed inside a main body case, wherein a microphone installation portion is formed in a cylindrical shape with an open inner end face and capable of installing a microphone in a stored state, and is provided protruding inward from the inner surface of the main body case, and a microphone cover portion is provided that can cover the opening of the microphone installation portion, and the microphone housed in the microphone installation portion is sandwiched from both sides in the inward and outward direction by the inner surface of the main body case and the microphone cover portion. According to the invention described in claim 1, the microphone housed in the microphone mounting section is clamped from both sides in an inward and outward direction by the inner surface of the main body case and the microphone cover section. As a result, the mounting state of the microphone in the microphone mounting section can be stabilized, and consequently, the sound quality can also be stabilized.

[0007] The invention described in claim 2 is characterized in that, in the invention described in claim 1, a liquid crystal display device and an insulating cover that covers the liquid crystal display device from the rear are installed inside the main body case, and a microphone cover portion is provided on the insulating cover. According to the invention described in claim 2, since the microphone cover portion is provided on the insulating cover that covers the liquid crystal display device from the rear, the number of parts can be reduced, and the microphone cover portion can be installed at the same time as the insulating cover is installed, which also simplifies the assembly work of the intercom equipment. [Effects of the Invention]

[0008] According to the present invention, a microphone mounting section is provided within the main body case, which is formed in a cylindrical shape with an open inner end face, allowing a microphone to be installed in a stored state. This section protrudes inward from the inner surface of the main body case, and a microphone cover is provided that can cover the opening of the microphone mounting section. The microphone stored in the microphone mounting section is held between the inner surface of the main body case and the microphone cover from both sides in an inward and outward direction. As a result, the installation state of the microphone in the microphone mounting section can be stabilized, and consequently, the sound quality can also be stabilized. [Brief explanation of the drawing]

[0009] [Figure 1] This is an explanatory diagram showing the main entrance panel from the front. [Figure 2] This is an explanatory diagram showing the main entrance panel from the rear. [Figure 3] This is an explanatory diagram showing the entrance door unit from the front. [Figure 4] This is an explanatory diagram showing the entrance door unit from the right side. [Figure 5] This is an explanatory diagram showing the entrance door unit from the left side. [Figure 6] This is a perspective view diagram showing the entrance door unit in a disassembled state, viewed from the front. [Figure 7] This is a perspective view diagram showing the entrance door unit in a disassembled state, viewed from the rear. [Figure 8] This is an explanatory diagram showing the entrance door unit from the rear, with the rear case removed. [Figure 9] This is an explanatory diagram showing the front case from the rear. [Figure 10] This is an explanatory diagram showing the LCD cover component from the front. [Figure 11] This is an explanatory diagram showing an enlarged view of the area around the speaker in the cross-section along line AA in Figure 3. [Figure 12] This is an explanatory diagram showing an enlarged view of the area around the microphone in the BB line cross-section in Figure 3. [Figure 13] This is an explanatory diagram showing an enlarged view of the area around the speaker in the CC line cross-section in Figure 4. [Figure 14] This is an explanatory diagram showing an enlarged view of the area around the microphone in the DD line cross-section in Figure 5. [Modes for carrying out the invention]

[0010] The following describes in detail, based on the drawings, a multi-unit entrance unit which is one embodiment of the present invention.

[0011] Fig. 1 is an explanatory view showing the collective entrance machine 1 from the front. Fig. 2 is an explanatory view showing the collective entrance machine 1 from the rear. Fig. 3 is an explanatory view showing the entrance machine body 2 from the front side. Fig. 4 is an explanatory view showing the entrance machine body 2 from the right side. Fig. 5 is an explanatory view showing the entrance machine body 2 from the left side. Fig. 6 is a perspective explanatory view showing the entrance machine body 2 in a disassembled state from the front side. Fig. 7 is a perspective explanatory view showing the entrance machine body 2 in a disassembled state from the rear side. Fig. 8 is an explanatory view showing the entrance machine body 2 with the rear case 22 removed from the rear side. Fig. 9 is an explanatory view showing the front case 21 from the rear side. Fig. 10 is an explanatory view showing the liquid crystal cover member 24 from the front side. Fig. 11 is an explanatory view showing an enlarged view around the speaker unit 6 in the cross section taken along the line A-A in Fig. 3. Fig. 12 is an explanatory view showing an enlarged view around the microphone unit 5 in the cross section taken along the line B-B in Fig. 3. Fig. 13 is an explanatory view showing an enlarged view around the speaker unit 6 in the cross section taken along the line C-C in Fig. 4. Fig. 14 is an explanatory view showing an enlarged view around the microphone unit 5 in the cross section taken along the line D-D in Fig. 5.

[0012] The collective entrance machine 1 is installed on the wall of the main entrance of an apartment house as part of a so-called apartment house intercom system, and includes an entrance machine body 2 provided with a display / operation unit 3 having a function as a touch panel, and a synthetic resin decorative cover 4 assembled to the entrance machine body 2 in a state where the display / operation unit 3 of the entrance machine body 2 is exposed. Further, a microphone unit 5 and a speaker unit 6 for communication are provided on the front surface of the entrance machine body 2, and a camera unit 7 for imaging the front is also provided. Then, when the display / operation unit 3 is operated by a visitor to specify a called household and a call operation is performed, the collective entrance machine 1 calls the intercom master unit (not shown) of the corresponding household and activates the camera unit 7 to photograph the visitor.

[0013] Here, the structure of the microphone unit 5 in the collective entrance machine 1 which is the main part of the present invention will be described. The makeup cover 4 is formed into a box shape that opens at the rear, and integrally includes a front plate 11 that is substantially rectangular in a front view, and an upper plate, a lower plate, a left side plate, and a right side plate that extend rearward from each peripheral edge of the front plate 11. Further, a rectangular opening that is long in the vertical direction is provided at a substantially central portion of the front plate 11, and the opening serves as a window 16 for exposing the display / operation unit 3 of the entrance machine body 2.

[0014] On the other hand, the entrance machine body 2 includes a main body case formed by assembling a front case 21 and a rear case 22. And inside the main body case, a liquid crystal display device 23 that constitutes the display unit / operation unit 3, a liquid crystal cover member 24 assembled so as to cover the rear of the liquid crystal display device 23, a microphone 25, a speaker 26, and a control board 27 that controls the operation of the entrance machine body 2 are installed.

[0015] On the front surface of the front case 21, ribs that protrude forward are peripherally provided in a rectangular frame shape. These ribs include an upper rib 31 that extends in the left-right direction at the upper part of the front case 21, a lower rib 32 that extends in the left-right direction at the lower part, a left rib 33 that extends in the vertical direction so as to connect the left ends of both ribs 31 and 32, and a right rib 34 that extends in the vertical direction so as to connect the right ends. And the space surrounded by such ribs functions as a glass plate mounting portion for fitting a glass plate 35 that constitutes a capacitive touch panel. Note that the ribs have substantially the same vertical length and horizontal width as the window 16 of the makeup cover 4, and when the makeup cover 4 is assembled to the front surface of the entrance machine body 2, the ribs are positioned adjacent to the opening edge of the window 16. Further, a display opening 45 for exposing the screen of the liquid crystal display device 23 is provided at a portion inside the glass plate mounting portion in the front case 21.

[0016] Furthermore, a speaker grid 36 is provided in the upper right corner of the glass plate 35 to signal sound emitted from the speaker 26 to the front of the main entrance unit 1. In addition, a cylindrical speaker mounting section 37 for installing the speaker 26 is provided on the rear surface of the front case 21, on the back side of the speaker grid 36. Moreover, a speaker opening 42 is provided in the upper right corner of the front surface of the front case 21, within the glass plate mounting section, to expose the space inside the speaker mounting section 37 to the front of the front case 21. In addition, a notch is provided at the upper end of the right rib 34, and this notch exposes the space behind the glass plate 35 within the glass plate mounting section, and in front of the speaker opening 42, to the right side of the front case 21. In other words, the opening formed by the notch in the right rib 34 and the space inside the speaker mounting section 37, particularly the space in front of the speaker 26, are in communication through the speaker opening 42. Therefore, the notch at the upper end of the right rib 34 functions as a speaker hole 38 for signaling sound emitted from the speaker 26 to the front of the main entrance unit 1.

[0017] On the other hand, a short notch is provided in the left rib 33 at approximately the center in the vertical direction, and a reset switch 39 for resetting the settings of the main entrance unit 1 is provided within this notch. This reset switch 39 is located behind the front end of the left rib 33. Furthermore, on the rear surface of the front case 21, on the back side of the lower left corner of the glass plate mounting section, that is, on the rear side of the glass plate 35, a microphone mounting section 40 is provided for installing the microphone 25 in a stored state. The microphone mounting section 40 is formed in a cylindrical shape with an open rear end. In addition, a microphone opening 43 is provided at the lower left corner of the front of the front case 21, within the glass plate mounting section, to expose the space inside the microphone mounting section 40 to the front of the front case 21. Moreover, a notch is also provided at the lower end of the left rib 33, and this notch exposes the space behind the glass plate 35 within the glass plate mounting section and in front of the microphone opening 43 to the left side of the front case 21. In other words, the opening formed by cutting out the lower end of the left rib 33 communicates with the space within the microphone mounting section 40, particularly the space in front of the microphone 25, via the microphone opening 43. Therefore, the cutout at the lower end of the left rib 33 functions as a microphone hole 41 for collecting sound emitted in front of the main entrance unit 1 into the microphone 25.

[0018] Furthermore, the LCD cover member 24 is an insulating cover body with a rectangular shape when viewed from the front, and screw fastening portions 51, 51 are provided on the upper right side and the lower left side for screwing itself to the rear surface of the front case 21. In addition, below the screw fastening portion 51 on the left side, there is a microphone cover portion 52 that covers the microphone mounting portion 40 from the rear when the LCD cover member 24 is screwed in. The microphone cover portion 52 is formed in a substantially cylindrical shape having a substantially circular plate body and a peripheral wall portion that protrudes forward from the outer edge of the plate body. When covering the microphone mounting portion 40, the rear end of the microphone mounting portion 40 enters into the microphone cover portion 52, and the front surface of the plate body of the microphone cover portion 52 comes into contact with the rear end of the microphone mounting portion 40 and the rear surface of the microphone 25 inside the microphone mounting portion 40. Note that 53 is a wiring cutout for passing a cable extending from the microphone 25.

[0019] The decorative cover 4 is assembled so as to cover the entrance unit body 2 from the front, with the ribs inserted into the window 16 from the rear. By assembling it in this way, the ribs are positioned along the opening edge of the window 16 as described above, and the ribs protect the glass plate 35 from coming into contact with the decorative cover 4. However, the notches provided in the left and right ribs 33 and 34 allow the speaker hole 38 and microphone hole 41, which are sandwiched between the glass plate 35 and the opening edge of the window 16 from the left and right, to open to the front of the entrance unit 1, and the reset switch 39 can be operated from the front of the entrance unit 1.

[0020] Furthermore, on the rear side of the front case 21, the microphone 25 is placed in the microphone mounting section 40, and the liquid crystal display device 23 is placed so that the screen is exposed in the display opening 45. Then, the liquid crystal cover member 24 is screwed to the rear surface of the front case 21 so as to cover the liquid crystal display device 23 from the rear, completing the installation of the microphone 25 and the liquid crystal display device 23. At this time, as described above, the rear end of the microphone mounting section 40 is inserted into the microphone cover section 52, and the microphone 25 is sandwiched from the front and rear between the rear surface of the front case 21 and the plate body of the microphone cover section 52 (as shown in Figure 12).

[0021] In the multi-unit entrance unit 1 having the above configuration, a microphone mounting section 40 is provided projecting to the rear of the front case 21, which is formed in a cylindrical shape with an open rear end and capable of housing and installing a microphone 25. A microphone cover section 52 is also provided that can cover the opening of the microphone mounting section 40. The microphone 25 housed in the microphone mounting section 40 is held between the rear surface of the front case 21 and the microphone cover section 52, thereby stabilizing the installation state of the microphone 25 in the microphone mounting section 40, and consequently stabilizing the sound quality.

[0022] Furthermore, since the liquid crystal display device 23 and an insulating liquid crystal cover member 24 that covers the liquid crystal display device 23 from the rear are installed inside the main body case of the entrance unit 2, and the liquid crystal cover member 24 is provided with a microphone cover portion 52, the number of parts can be reduced, and the microphone cover portion 52 can be installed along with the installation of the liquid crystal cover member 24, thereby simplifying the assembly work of the collective entrance unit 1.

[0023] Furthermore, a rib protruding forward is provided around the front of the main body case of the entrance unit 2, and the area surrounded by the rib serves as a glass plate mounting area for fitting the glass plate 35. When the decorative cover 4 is assembled to the entrance unit 2, the rib is positioned along the opening edge of the window 16. Also, on the rear surface of the front case 21, a cylindrical speaker mounting area 37 and a microphone mounting area 40 are provided at the rear of the glass plate 35, with a speaker 26 installed in the speaker mounting area 37 and a microphone 25 installed in the microphone mounting area 40. In addition, a speaker opening 42 is provided in the area within the glass plate mounting area on the front of the front case 21 to expose the space inside the speaker mounting area 37 to the front of the front case 21, and a microphone opening 43 is provided to expose the space inside the microphone mounting area 40 to the front of the front case 21. In addition, a portion of the right rib 34, which constitutes the rib, is cut out, and the opening formed by this cutout is configured to communicate with the space in front of the speaker 26 within the speaker installation section 37 via the speaker opening 42. This allows the cutout in the right rib 34 to function as a speaker hole 38 for signaling sound emitted from the speaker 26 to the front of the main entrance unit 1. Similarly, a portion of the left rib 33, which also constitutes the rib, is cut out, and the opening formed by this cutout is configured to communicate with the space in front of the microphone 25 within the microphone installation section 40 via the microphone opening 43. This allows the cutout in the left rib 33 to function as a microphone hole 41 for collecting sound emitted in front of the main entrance unit 1 into the microphone 25. In this way, the cutouts provided in the ribs that surround and protect the glass plate 35 are used as communication holes for making calls, thus streamlining the structure of the front of the main entrance unit 1.

[0024] In addition, the left rib 33 has another cutout, and a reset switch 39, which can be operated by pushing it in from the front of the main case, is provided within this cutout. By using the cutout in the rib that surrounds and protects the glass plate 35 to install the reset switch 39, the structure of the front of the main entrance unit 1 can be further streamlined.

[0025] Furthermore, the intercom equipment according to the present invention can be modified as necessary, without departing from the spirit of the present invention, not only in terms of the overall configuration of the intercom equipment, but also in terms of the configuration related to the microphone installation section, etc.

[0026] For example, in the above embodiment, a microphone cover is provided on the insulating cover, but there is no problem in configuring the microphone cover as a component independent of the insulating cover. It may be configured as a component that only has the function of a microphone cover, or as an element of a separate component different from the insulating cover. Furthermore, if a microphone is installed inside the main unit case, the present invention can be suitably applied to other intercom equipment such as intercom sub-units and intercom master units. [Explanation of Symbols]

[0027] 1. Entrance unit (intercom equipment), 5. Microphone unit, 21. Front case, 23. LCD display unit, 24. LCD cover component, 25. Microphone, 40. Microphone mounting section, 41. Microphone hole, 43. Microphone opening, 52. Microphone cover unit, 53. Wiring cutout.

Claims

1. An intercom device in which a microphone is installed inside the main unit case, Within the main body case, a microphone mounting section is provided, which is formed in a cylindrical shape with an open inner end face and capable of housing the microphone, and protrudes inward from the inner surface of the main body case; and a microphone cover section is provided that can cover the opening of the microphone mounting section. An intercom device characterized in that the microphone housed in the microphone mounting section is held from both sides in an inward and outward direction by the inner surface of the main body case and the microphone cover section.

2. A liquid crystal display device and an insulating cover that covers the liquid crystal display device from the rear are installed inside the main body case, The intercom device according to claim 1, characterized in that the microphone cover portion is provided on the insulating cover.

Images