JP2009147737A - Intercom slave set - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an intercom slave set which surely prevents even relatively small waterdrops from accumulating in a sound collecting hole without providing ribs or the like projecting forward from a body case. <P>SOLUTION: On a front face of a body case 5, a sound collecting hole 12 for transferring voices or the like to a microphone is opened and a first drain groove 13 for guiding downward water accumulating in the sound collecting hole 12 extends downward from a lower end of the sound collecting hole 12. Therefore, water is prevented from accumulating to cover the sound collecting hole 12 to hinder transmission of voices to the microphone, and water is prevented from entering the body case 5. <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.

  Conventionally, in interphone handsets that are often installed outdoors such as entrances, water drops accumulate to cover the sound collection holes provided for calls with the room base unit. One problem that needs to be solved is the problem that the received sound volume cannot be secured. Therefore, in order to solve the problem, a rib projecting forward is provided below the sound collecting hole formed in the front surface of the main body case, and the rib balances the surface tension of the water droplets that try to accumulate in the sound collecting hole. The structure (for example, patent document 1) which broke and flowed below is proposed.

JP 2001-177616 A

However, the configuration described in Patent Document 1 is effective when the water droplets are relatively large, but the water droplets are relatively small, that is, when the amount of water flowing into the sound collection hole is small. However, not only did the ribs not sufficiently exhibit the function of preventing retention, but conversely, water droplets were retained on the upper surface of the ribs and the sound collection function of the sound collection holes was hindered.
Moreover, since the rib is protrudingly provided in front of the main body case, when the decorative panel is attached to the front surface of the main body case, the opening portion for exposing the rib to the decorative panel, the storage portion for storing the rib, etc. Since it is necessary to provide the components, the design and configuration of the decorative panel that can be mounted is limited, and a decorative panel of the type that has been used in the past (that is, a type that does not have an opening or a storage section) must be installed. There was also a problem that it was not possible.

  Therefore, the present invention has been made in view of the above problem, and without providing a rib or the like protruding forward from the main body case, even if the water droplets are relatively small, the water droplets can be reliably supplied to the sound collection holes. It is an object of the present invention to provide an intercom slave device having a structure capable of preventing the stoppage.

In order to achieve the above object, the invention according to claim 1 of the present invention has a built-in microphone inside the main body case for making a call with a room main unit installed in a room or the like. The intercom slave unit has a sound collecting hole for transmitting sound and the like to the microphone on the front surface of the main body case, and a first drain groove for guiding water accumulated in the sound collecting hole downward, It is characterized by extending downward from the lower end of the sound collecting hole.
According to this configuration, the water to be retained in the sound collecting hole can be flowed downward by the first drain groove, so that the water collects so as to cover the sound collecting hole and it is difficult for the microphone to reach the sound. And the like, and the function of preventing water from entering the main body case can be improved. Moreover, since the protrusion which protrudes further forward from the front surface of the main body case is not provided, the front surface of the main body case can be formed in a relatively flat shape. Therefore, when the decorative panel is attached to the main body case, the configuration on the decorative panel side can be simplified, and a conventional decorative panel or the like can be attached, which is highly versatile.

The invention according to claim 2 is the invention according to claim 1, wherein a decorative panel is attached to the front surface of the main body case, and a microphone hole for exposing the sound collecting hole is provided in the decorative panel, and a microphone is provided. The second drainage groove for guiding the water that has entered the gap between the main body case and the decorative panel through the hole downward is recessed on the rear surface of the decorative panel and downward from the lower end of the microphone hole. Features.
According to this configuration, the second drain groove provided on the rear surface of the decorative panel allows the water that has entered the gap between the decorative panel and the front surface of the main body case to flow downward through the microphone hole. It is possible to further improve the function of preventing retention in the sound collecting hole and the function of preventing entry into the main body case.

According to a third aspect of the present invention, in the second aspect of the present invention, a protrusion is provided on the rear surface of the decorative panel so as to surround the left and right outer sides and the upper side of the second drain groove and the microphone hole. The strip portion is in contact with or close to the front surface of the main body case when the decorative panel is attached to the main body case, and covers the left and right sides and the upper side of the sound collecting hole.
According to this configuration, the left and right sides and the upper side of the microphone hole and the sound collecting hole are covered by the protruding strips provided so as to surround the outer side of the microphone hole and the second drainage groove. Can prevent unnecessary diffusion of the infiltrated water into the surroundings. Therefore, not only the function of preventing water from entering the main body case can be further improved, but also the water draining operation by the second water drain groove can be performed more efficiently. Further, the ridge portion can suppress, for example, the arrival of the sound reported from the speaker portion to the microphone, thereby enabling a suitable call.

  According to the present invention, a sound collecting hole for transmitting sound or the like to the microphone is opened on the front surface of the main body case, and the first water drain groove for guiding water accumulated in the sound collecting hole downward is collected. Since the sound hole extends downward from the lower end of the sound hole, water can be collected to cover the sound collection hole, making it difficult for voice to reach the microphone. It is also possible to improve the intrusion prevention function.

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.

  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.

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 ・ ・ Make-up panel, 3 ・ ・ Front case, 4 ・ Back case, 5 ・ ・ Main body case, 7 ・ Microphone unit, 11 ・ ・ Sound collection space, 12 ・ ・Sound hole, 13 .... first drain groove, 14 .... contact recess, 15 .... sound insulation projection (projection), 21..window, 22..locking piece, 23..microphone hole, 24. -2nd water drain groove, 30 ... water drain recessed part.

Claims (3)

It is an intercom handset that has a built-in microphone inside the main body case for making a call with a base unit installed in a living room, etc.
A sound collecting hole for transmitting sound or the like to the microphone is opened on the front surface of the main body case, and a first water drain groove for guiding water accumulated in the sound collecting hole downward is provided in the sound collecting hole. An intercom handset that extends downward from the lower end of the door. A decorative panel is attached to the front surface of the main body case,
The decorative panel is provided with a microphone hole for exposing the sound collecting hole, and second water for guiding water that has entered the gap between the main body case and the decorative panel downward through the microphone hole. The intercom handset according to claim 1, wherein a cut groove is provided in a recessed manner on a rear surface of the decorative panel and downward from a lower end of the microphone hole.   On the rear surface of the decorative panel, a ridge is provided so as to surround the second drain groove and the left and right outer sides and the upper side of the microphone hole, and the ridge is attached to the main body case of the decorative panel. 3. The intercom handset according to claim 2, wherein the left and right sides and the upper side of the sound collection hole are covered in contact with or close to the front surface of the main body case.

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