JP2009152794A - Interphone slave unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an interphone slave unit which has an acoustic insulating function and enables proper communication, without using acoustic insulating members whose attaching work or the like takes much time and labor. <P>SOLUTION: On the rear surface of a decorative panel, an acoustic insulating protrusion 15 surrounding the circumference of a microphone hole 23 is formed so as to protrude backward, and the insulating protrusion 15 is made to be brought into contact with the front surface of the front case and surround even the circumference of a sound collecting hole, in a state where the decorative panel is attached to the front case. By adopting this structure, it becomes possible to prevent sound, or the like, emitted from a speaker section, for example, from reaching a microphone, to perform proper communication, without using acoustic insulating members whose attaching work or the like takes much time and effort. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to an intercom handset installed at a front door or the like for a visitor to call a resident.

  2. Description of the Related Art Conventionally, interphone handsets installed at a front door or the like are generally known in which a cover case such as a decorative panel is attached to the front surface of a main body case. The intercom handset is made of a synthetic resin that surrounds the sound collecting hole opened on the front surface of the main body case and the microphone hole opened on the decorative panel between the front surface of the main body case and the rear surface of the decorative panel. By interposing the sound insulation member, noise is prevented from reaching the microphone portion provided for the telephone call.

Japanese Utility Model Publication No. 5-97154

  However, in the configuration described in Patent Document 1, one side of the sound insulation member has to be attached to the front surface of the main body case and the other side to the rear surface of the decorative panel, for example. . Further, when removing the decorative panel due to maintenance, replacement of the decorative panel, etc., the sound insulation member must be peeled off and then bonded again, and the work becomes complicated. Furthermore, when the decorative panel is removed, the sound insulation member is damaged, and the sound insulation member must be replaced.

  Therefore, the present invention has been made in view of the above problems, and an intercom handset that has a sound insulation function and can perform a suitable call without using a sound insulation member that is troublesome in mounting work or the like is provided. To do.

In order to achieve the above object, the invention according to claim 1 of the present invention is characterized in that a microphone for making a call with a room base unit installed in a room or the like is built in the main body case. This is an interphone handset that has a decorative panel attached to the front of the main unit case, and a sound collecting hole on the front of the main unit case and a microphone hole on the decorative panel to transmit sound and the like to the microphone. And, on the rear surface of the decorative panel, a ridge that surrounds the periphery of the microphone hole protrudes rearward, and the ridge is connected to the front surface of the main body case in a state of being attached to the main body case of the decorative panel. It surrounds the sound collection hole in contact or close proximity.
According to this configuration, when the decorative panel is attached to the main body case, the surroundings of the sound collecting hole and the microphone hole are surrounded by the protruding strip portion protruding from the rear surface of the decorative panel. Therefore, for example, it is possible to prevent the voice or the like reported from the speaker unit from reaching the microphone without using a sound-insulating member that is troublesome for attachment work or the like, and a suitable call can be made.

The invention according to claim 2 is the invention according to claim 1, wherein the ridges are provided so as to surround only the left and right sides and the upper side of the microphone hole, and at least the microphone hole on the rear surface of the decorative panel. On both the left and right sides, at the position between the microphone hole and the ridge, a water draining groove is provided in the vertical direction to guide the water that has entered the rear side of the decorative panel through the microphone hole downward. It is characterized by.
According to this configuration, the water that has entered the gap between the decorative panel and the front surface of the main body case can flow downward through the microphone hole by the drainage groove provided on the rear surface of the decorative panel. Moreover, since the protruding line part is provided so as to surround only the left and right sides and the upper side of the microphone hole, water does not accumulate in the protruding line part. Therefore, the water that has entered through the microphone hole is stored so as to cover the sound collection hole, and it is possible to prevent the occurrence of the situation that the sound collection function is disturbed, and the function of preventing entry into the main body case is improved. Can be planned.

  According to the present invention, the projecting strip projecting on the rear surface of the decorative panel is configured to surround the sound collecting hole and the microphone hole when mounting the decorative panel to the main body case. Therefore, the intercom handset can have a sound insulation function and can perform a suitable call without using a sound insulation member that is troublesome.

Hereinafter, an intercom handset serving as an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is an explanatory diagram showing the interphone slave unit 1 from the front side, and FIG. 2 is an explanatory diagram showing the interphone slave unit 1 from the bottom side. FIG. 3 is an explanatory view showing the intercom handset 1 with the decorative panel 2 removed.

  The intercom handset 1 is installed on the wall surface of the entrance via a mounting base (not shown) and is connected to a room base unit (not shown) installed in the room or the like so as to be able to communicate with the front case. 3 and the rear case 4 and a decorative panel 2 attached to the front surface of the main body case 5 so as to cover a part of the front surface of the front case 3. The main body case 5 is provided with a call button 6 for a visitor to call a resident, a microphone unit 7 and a speaker unit 8 for a call, a camera unit 9 for imaging a visitor, and a decorative panel 2. Are provided with the locking holes 10, 10.

Here, the microphone part 7 which is a main part of the present invention will be described in detail with reference to FIG. FIG. 4 is an explanatory perspective view showing the vicinity of the microphone portion 7 of the main body case 5 in an enlarged manner.
The microphone unit 7 includes a microphone (not shown) provided in the main body case 5, a bottomed sound collection space 11 recessed at a front position of the microphone (front case 3), and voice and the like to the microphone. From a sound collecting hole 12 elongated in the vertical direction along the right edge in the sound collecting space 11 to be transmitted, and a concave first drain groove 13 extending downward from the lower end of the sound collecting hole 12. Become. The first draining groove 13 has a width of 0.5 mm in the left-right direction and a depth of 0.2 mm in the front-rear direction, and draws water droplets to be retained in the sound collecting hole 12 into the groove by a capillary phenomenon. It is designed to flow downward. In addition, a shallow concave contact recess 14 is provided at the periphery of the sound collection space 11, and when the decorative panel 2 is attached, the rear end surface of the sound insulating protrusion 15 protruding from the decorative panel 2 is abutted. It comes to touch.

Next, the location corresponding to the microphone part 7 of the decorative panel 2 will be described in detail with reference to FIG. FIG. 5 is an enlarged perspective view illustrating the vicinity of the microphone hole 23 on the rear surface of the decorative panel 2.
The decorative panel 2 is a plate-like member in which a window 21 for exposing the calling button 6, the speaker unit 8, the camera unit 9 and the like is opened in the center, and the position corresponding to each locking hole 10 of the main body case 5 The arrowhead-like locking piece 22 projects rearward. Further, a microphone hole 23 for exposing the sound collection hole 12 is opened at a position corresponding to the microphone unit 7.

  Further, a pair of second drain grooves 24 and 24 are formed on the rear surface of the decorative panel 2. The second drain grooves 24, 24 have a width of 0.7 mm in the left-right direction and a depth of 0.5 mm in the front-rear direction, and from the lower edge of the microphone hole 23 along the left and right side edges of the microphone hole 23. Also, the water that has entered between the decorative panel 2 and the front case 3 through the microphone hole 23 is drawn into the groove by capillary action and flows downward.

  In addition, a U-shaped sound insulation projection 15 is provided so as to protrude rearward so as to surround the outside of the microphone hole 23 and the second drainage grooves 24, 24. The sound insulation protrusion 15 is provided in a posture that opens downward, and does not hinder the downward flow of water by the second drainage grooves 24, 24. Further, the sound insulation protrusion 15 comes into contact with the contact recess 14 of the front case 3 along with the attachment of the decorative panel 2 to the main body case 5 so as to cover the sound collection space 11 from above and from the left and right sides.

Here, the water draining action in the intercom handset 1 will be described.
The intercom handset 1 is installed at the entrance or the like with the decorative panel 2 attached to the front surface of the main body case 5, and in the microphone unit 7, water first enters through the microphone hole 23 of the decorative panel 2. It will be. However, in the intercom handset 1, the water that has entered through the microphone holes 23 is guided downward by the second drain grooves 24, 24, and the arrival at the microphone portion 7, that is, the sound collection holes 12, etc. is suppressed. The sound insulation protrusion 15 prevents unnecessary diffusion of the water that has entered through the microphone hole 23 to the periphery, and the water is efficiently drained by the second drainage grooves 24 and 24. In addition, the water guided downward by the second drainage groove 24 flows to the bottom of the intercom handset 1 through the front surface of the front case 3 or the rear surface of the decorative panel 2, and is formed on the front surface of the front case 3. It is discharged to the outside through the drain recesses 30 and 30.

  Even if the second drain grooves 24, 24 are provided, the water may reach the sound collection space 11 and may collect so as to close the sound collection hole 12. However, in the intercom handset 1, the water is guided downward by the first drain groove 13 to prevent the water collecting hole 12 from being retained and entering the main body case 5 through the sound collecting hole 12. . Note that the water guided downward by the first drain groove 13 also flows down to the bottom of the interphone slave unit 1 and is then discharged through the drain recesses 30 and 30 as described above.

  According to the intercom handset 1 having the above-described configuration, the first drain groove 13 extends downward from the lower end of the sound collecting hole 12 opened in the front case 3, and stops at the sound collecting hole 12. The water to be stored is made to flow downward. Accordingly, it is possible to prevent a situation where water is collected so as to cover the sound collection hole 12 and it is difficult for voice to reach the microphone, and the function of preventing water from entering the main body case 5 is also enhanced.

  Moreover, since the protrusion etc. which protrude further ahead from the front surface of main body case 5 are not provided, the front surface of main body case 5 (microphone part 7 periphery) can be shape | molded in flat shape, and the structure by the side of the decorative panel 2 is provided. It is possible to simplify, it is also possible to use a conventionally used decorative panel or the like instead of the decorative panel 2, and is versatile.

  Further, a pair of second drainage grooves 24, 24 are provided on the rear surface of the decorative panel 2 so as to extend below the lower edge of the microphone hole 23 along the left and right side edges of the microphone hole 23. The water that has entered through the water flows downward. Therefore, it is possible to further improve the function of preventing retention to the sound collecting hole 12 and the function of preventing water from entering the main body case 5.

  Furthermore, the decorative panel 2 is provided with a sound insulation projection 15 so as to surround the outside of the microphone hole 23 and the second drainage grooves 24, 24, and the sound insulation projection 15 is attached to the body case 5 of the decoration panel 2. Since it contacts with the contact recessed part 14 of the front case 3, unnecessary diffusion to the circumference | surroundings of the water which permeated through the microphone hole 23 can be prevented. Accordingly, not only the function of preventing water from entering the main body case 5 can be further improved, but also the water draining operation by the second drain grooves 24 and 24 can be performed more efficiently.

  In addition, since the sound collection space 11 is covered by the sound insulation projection 15 from above and from the left and right sides, it is possible to suppress the arrival of sound reported from the speaker unit 8 to the microphone. In this case, the voice of the visitor is not mixed with noise, and a suitable call can be made. Moreover, since it is possible to cover the upper and left and right sides of the sound collection space 11 simply by attaching the decorative panel 2, it is not necessary to attach a sound insulation member one by one as in the prior art, and it is easy to use.

  In addition, the intercom handset according to the present invention is not limited to the aspect described in the above embodiment, and the configuration related to the main body case and the decorative panel is necessary without departing from the spirit of the present invention. It can be changed accordingly.

For example, the shape and design of the decorative panel can be changed as appropriate, and instead of the decorative panel 2 described in the above embodiment, a flat decorative panel (so-called door sleeve panel) 35 as shown in FIG. It is also possible to use it. In addition, in FIG. 6, the same code | symbol is attached | subjected about the component similar to the decorative panel 2. FIG. Moreover, the said decorative panel 35 may be equipped with the 2nd water draining groove | channel 24 similar to the decorative panel 2, the sound insulation protrusion 15, etc. in the rear surface, and does not need to be provided.
Moreover, the design and design of the dimensions and number of the second drainage grooves 24 provided on the decorative panel side and the presence / absence of the second drainage grooves 24 can be appropriately changed, and only one second drainage groove 24 is provided. Of course, it is possible to configure the intercom handset 1 by attaching a decorative panel that does not have the second drainage groove 24 to the main body case.
Furthermore, it goes without saying that the design of the dimensions and the like of the first drain groove 13 can be changed as appropriate.
In addition, the shape and the like of the sound insulation projection 15 are not limited to those described in the above embodiment, and the same is true even if the sound insulation projection 15 is provided so as to be close to the front surface of the main body case 5 when the decorative panel is attached. The effect of can be produced. Moreover, in the said embodiment, although the sound insulation protrusion 15 is formed in the U shape open | released below, even if it forms the sound insulation protrusion 15 so that the sound collection hole 12 and the microphone hole 23 may completely surround the upper and lower sides, and right and left Good.

It is explanatory drawing which showed the intercom cordless handset from the front side. It is explanatory drawing which showed the intercom cordless handset from the bottom face side. It is explanatory drawing which showed the intercom subunit | mobile_unit of the state which removed the decorative panel. It is perspective explanatory drawing which expanded and showed the microphone part vicinity of the main body case. It is perspective explanatory drawing which expanded and showed the microphone hole vicinity of the decorative panel rear surface. It is explanatory drawing which showed the example of a change of a decorative panel.

Explanation of symbols

  1 ・ ・ Interphone cordless handset, 2 ・ 35 ・ ・ Makeup panel, 3 ・ ・ Front case, 4 ・ Back case, 5 ・ ・ Main body case, 7 ・ Microphone part, 11 ・ ・ Sound collection space, 12 ・ ・ Collection Sound hole, 13 .... first drain groove, 14 .... contact recess, 15 .... sound insulation projection (projection), 21..window, 22..locking piece, 23..microphone hole, 24.・ Second drainage groove (drainage groove), 30.

Claims (2)

A microphone for making a call with a living room main unit installed in a living room or the like is built in the main body case, while a decorative panel is attached to the front of the main body case, and voice etc. is sent to the microphone. In order to transmit, an interphone cordless handset in which a sound collecting hole is opened on the front surface of the main body case and a microphone hole is opened in the decorative panel,
On the rear surface of the decorative panel, a protruding ridge that surrounds the periphery of the microphone hole protrudes backward, and the protruding ridge is attached to the main body case of the decorative panel. An intercom handset that surrounds the sound collecting hole in contact with or close to a front surface.   The ridges are provided so as to surround only the left and right sides and the upper side of the microphone hole, and at least the left and right sides of the microphone hole on the rear surface of the decorative panel, and the microphone holes and the ridges. A drainage groove for guiding water that has entered the rear side of the decorative panel through the microphone hole in a downward direction is formed in a vertical direction at a position between The intercom handset described in 1.

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