JP2023017241A - Intercom slave unit - Google Patents

Abstract

To provide an intercom slave unit capable of preventing a speaker from getting damaged or getting wet without causing loss of volume or sound quality.SOLUTION: In a state where a speech button 7 is mounted on a front panel 2, a sound outlet X is formed on the upper side of button hole 214. The sound outlet X is located below the bottom of a speaker 30 without facing the speaker 30. The speaker 30 and the sound outlet X communicate with each other, via a speaker hole 313, and a space between the front panel 2 and a front case 3. The sound from the speaker 30 is emitted forward from the sound outlet X.SELECTED DRAWING: Figure 4

Description

The present disclosure relates to the structure of an intercom handset.

In the interphone handset, when a call button is pressed, a call is started, and the voice from the called party is emitted from a sound emitting hole (hole or groove for sound emitting) provided on the front panel. In Patent Document 1, a button mounting frame is provided at a position facing the speaker on the front panel, a call button is mounted on the button mounting frame, and a sound output opening is formed on the frame of the button mounting frame so that sound from the speaker is emitted. An interphone handset emitted through the sound outlet is disclosed.

JP 2008-252576 A

Normally, the sound output port of the intercom slave unit is provided at the front (front) of the front panel where the camera for photographing the operator, operation buttons, etc. are provided, and at a position facing the speaker. In this case, the speaker may be damaged if an object is inserted through the sound outlet for mischief or the like. Also, if rainwater enters from the sound outlet, the speaker will get wet. In addition, exposure to sunlight (ultraviolet rays) entering through the sound outlet accelerates deterioration of the speaker. To avoid these problems, simply reducing the size of the sound output causes a decrease in volume and sound quality.

A non-limiting embodiment of the present disclosure contributes to providing an intercom slave unit that can prevent speaker deterioration, damage, etc., without causing a decrease in volume or sound quality.

An intercom slave unit of the present disclosure includes a main body, a speaker attached to the main body, and a front panel attached to the front of the main body having a sound output opening for emitting sound from the speaker. A sound path from the speaker to the sound outlet is secured between the main body and the front panel, and the sound outlet does not face the speaker when viewed from the front in the front-rear direction of the main body. , located below the lower end of the speaker.

It should be noted that these generic or specific aspects may be implemented in systems, integrated circuits, computer programs, or recording media, and any combination of systems, devices, methods, integrated circuits, computer programs and recording media. may be implemented with

According to one aspect of the present disclosure, it is possible to prevent speaker deterioration and the like without causing a decrease in volume or sound quality.

Front view of an intercom slave unit according to an embodiment of the present disclosure FIG. 10 is a front view of the intercom cordless handset according to the embodiment of the present disclosure with the front panel removed; Side cross-sectional view of an intercom slave unit according to an embodiment of the present disclosure Side partial cross-sectional view of an intercom slave unit according to an embodiment of the present disclosure 1 is an exploded perspective view of an intercom slave unit according to an embodiment of the present disclosure; FIG. FIG. 4 is a perspective view of a single button of an intercom slave device according to an embodiment of the present disclosure; FIG. 5 is a diagram for explaining how buttons are attached to an intercom cordless handset according to an embodiment of the present disclosure;

(Embodiment)
Hereinafter, embodiments of the present disclosure will be described in detail with reference to the drawings as appropriate. However, more detailed description than necessary may be omitted. For example, detailed descriptions of well-known matters and redundant descriptions of substantially the same configurations may be omitted. This is to avoid unnecessary verbosity in the following description and to facilitate understanding by those skilled in the art.

It should be noted that the accompanying drawings and the following description are provided for a thorough understanding of the present disclosure by those skilled in the art and are not intended to limit the claimed subject matter.

TECHNICAL FIELD The present disclosure relates to an intercom handset, and more particularly to a camera-equipped intercom handset. The intercom slave unit constitutes an intercom system together with the intercom master unit. The intercom slave unit is installed, for example, outdoors (for example, at the entrance) of a dwelling unit of a house or collective housing, and the intercom main unit is installed indoors of a dwelling unit of a house or collective housing. The intercom slave unit and the intercom master unit are connected to each other by, for example, a transmission line, so that a call can be made between the intercom slave unit and the intercom master unit, and the situation outside the room can be visually recognized by the camera of the intercom slave unit.

(overall structure)
In the following, the directions of up/down, left/right, and front/rear of the interphone handset 1 of the present embodiment will be defined and explained using the up/down, left/right, and front/rear arrows shown in FIG. These arrows are merely described for the purpose of assisting the explanation and are not substantial. Moreover, these directions are not meant to limit the direction of use of the intercom cordless handset 1 .

First, the overall configuration of the intercom cordless handset 1 will be described with reference to FIGS. 1 to 5. FIG. FIG. 1 is a front view of the intercom slave unit 1, and FIG. 2 is a front view of the intercom slave unit 1 with the front panel 2 removed. 3 is a side cross-sectional view of the intercom slave unit 1, which is a cross-sectional view taken along the line AA in FIG. FIG. 4 is a side partial cross-sectional view of the interphone handset 1, and is an enlarged view of the B portion in FIG. FIG. 5 is an exploded perspective view of the intercom cordless handset 1. FIG.

The intercom slave unit 1 is composed of a front panel 2, a front case 3, a substrate part 4, a rear case 5, and a wall mount adapter 6. - 特許庁Note that the front case 3, the substrate portion 4 and the rear case 5 constitute the handset main body 1a.

The front panel 2 is elongated in the vertical direction as a whole. The front panel 2 is in the shape of a flat rectangular box with an open rear surface. A call button 7 and a button holder 8 (see FIGS. 6 and 7) are attached to the front panel 2, and the front side of the handset main body 1a (the side opposite to the side housed in the wall-mounted adapter 6) is equipped with a call button 7 and a button holder 8. It is attached.

On the front of the front panel 2, there are a circular camera hole 211 for projecting forward the lens portion 21 of the camera 20 and the camera protection member 301 of the front case 3, a microphone hole 212 for collecting the sound of the microphone 40, and an LED 50. A rectangular emission hole 213 for emitting light and a rectangular button hole 214 for projecting the call button 7 forward are formed. The long side of the buttonhole 214 is longer than the outer diameter of the speaker 30 . As will be described later, the button hole 214 forms a sound output port X for outputting the sound from the speaker 30 to the external front surface (that is, the direction in which the operator should be) due to the relationship with the call button 7. .

The front case 3 is elongated in the vertical direction as a whole. The front case 3 is in the shape of a flat rectangular box with an open rear surface.

A camera protection member 301 for protecting the camera 20 and a light diffusion panel 302 for diffusing light emitted from the LEDs 50 are attached to the front case 3 . The camera protection member 301 is formed with a lens hole 311 for allowing the lens portion 21 of the camera 20 to protrude forward. The front case 3 is also formed with a microphone hole 312 for collecting sound from the microphone 40, a speaker hole 313 for emitting sound from the speaker 30, and a button hole 314 for projecting the call button 7 forward. ing. Sound insulation walls (ribs) 321 are formed in the upper and side portions of the speaker hole 313 of the front case 3 to prevent the sound emitted from the speaker 30 from spreading outside the desired area.

The board section 4 is divided into, for example, a main board 401, a camera board 402a, and a microphone board 402b. Note that the camera board 402a and the microphone board 402b may be collectively called a sub-board 402. FIG. The main substrate 401, the camera substrate 402a, and the microphone substrate 402b are printed wiring boards, and circuit patterns (conductor patterns) are formed on their surfaces. The camera board 402 a and the microphone board 402 b are finally electrically connected to the main board 401 . The camera board 402a and the microphone board 402b may be independently connected to the main board 401 by wiring, or one of the camera board 402a and the microphone board 402b may be connected to the main board 401 via the other board. may be connected. A speaker 30 , LEDs (Light Emitting Diodes) 50 and 55 , and a switch 60 are mounted on the main board 401 . The camera 20 is mounted on the camera board 402a, and the microphone 40 is mounted on the microphone board 402b.

The camera 20 captures an image of a subject such as a visitor, converts the captured image data into an electrical signal (video data), and transmits the electrical signal (video data) to the intercom main unit. The speaker 30 converts an electric signal (audio data) received from the intercom base unit into audio and outputs the audio. The microphone 40 converts the voice of the visitor into an electrical signal (voice data) and transmits the electrical signal to the intercom base unit.

After the operator presses the call button 7, the LED 50 emits light when the camera 20 captures an image of the operator, for example, when it is determined that the installation environment of the intercom slave unit 1 is dark using an illuminance sensor or the like. Diffused light is emitted from the emission holes 213 through the diffusion panel 302 . In addition, the LED 55 emits light from a light guide lens 711 attached to the call button 7 so that the position of the call button 7 can be easily recognized.

The switch 60 is turned on by pressing the call button 7 by the visitor. A ringing signal is thereby generated. The call signal is transmitted to the intercom master unit.

The rear case 5 is elongated in the vertical direction as a whole. The rear case 5 has a flat rectangular box shape with an open front surface, and accommodates the substrate portion 4 .

The wall-mounted adapter 6 is elongated in the vertical direction as a whole. The wall-mounted adapter 6 is in the shape of a flat rectangular box with an open front surface. The wall-hanging adapter 6 can accommodate the child device main body 1a in a state of being attached in advance to a wall of a house, a pillar at the entrance, or the like, in order to facilitate installation of the child device main body 1a.

(Button configuration)
Next, the configuration and attachment state of the call button 7 of the intercom cordless handset 1 will be described with reference to FIGS. 6 and 7. FIG. FIG. 6 is a perspective view of the call button 7 alone of the intercom cordless handset 1. FIG. FIG. 7 is a diagram for explaining how the call button 7 of the intercom cordless handset 1 is attached.

A light guiding lens 711 for guiding light emitted from the LED 55 is screwed to the call button 7 . A part of the light guide lens 711 is exposed from the front central portion of the main portion 721 of the call button 7 .

A main portion 721 of the call button 7 has a substantially rectangular shape when viewed from the front, and its long sides are slightly shorter than the long sides of the button hole 214 . In order to form the sound outlet X, the short side (height) of the main portion 721 of the call button 7 is formed shorter than the short side of the button hole 214 .

The call button 7 has arm portions 722a and 722b for attaching the call button 7 to the front panel 2, and sound insulation walls (ribs) for preventing the sound emitted from the speaker 30 from spreading outside the desired area. 723 is formed.

The call button 7 is swingably engaged with the front panel 2 at arm portions 722a and 722b in a state in which the front surface of the main portion 721 of the call button 7 protrudes forward from the button hole 214 from the rear surface of the front panel 2. stop.

With the call button 7 locked to the front panel 2 , the button holder 8 is screwed to the front panel 2 from the rear surface of the front panel 2 via a spring 731 so as to press the call button 7 . As a result, the call button 7 is displaced rearward to turn on the switch 60 in response to the visitor's push operation, and is displaced forward by the biasing force of the spring 731 to turn off the switch 60 .

With the call button 7 attached to the front panel 2 , the sound outlet X is formed between the main portion 721 of the call button 7 and the button hole 214 , in other words, on the upper side of the button hole 214 . Sound from the speaker 30 is emitted to the outside through the sound outlet X. As shown in FIG.

(Assembly process)
The rear case 5 is assembled to the front case 3 by fitting while accommodating the substrate portion 4 . Since the front case 3 and the rear case 5 are connected with almost no gap, the intrusion of water from the connecting portion is suppressed without using a waterproof packing or the like. A waterproof packing is attached around the lens portion 21 of the camera 20 . When the front case 3 and the rear case 5 are joined together, the lens hole 311 is closed by the waterproof packing of the lens part 21 , and water is prevented from entering through the camera hole 211 .

The front case 3 is attached to the wall-mount adapter 6 by screws while the rear case 5 containing the substrate 4 is connected.

The front panel 2 has locking pawls on its rear surface, which are locked to the locking grooves of the front case 3 in a one-to-one manner. Thereby, the front panel 2 is detachably attached to the front case 3 . If the user wishes to change the design or color of the intercom cordless handset 1, he or she can do so by simply exchanging the front panel 2. FIG.

In the intercom slave unit 1 of the present disclosure, when the front panel 2 is attached to the front case 3 , the sound output port X does not face the speaker 30 and is positioned below the lower end of the speaker 30 .

In addition, in the intercom slave unit 1 of the present disclosure, the speaker 30 and the sound output port X communicate with each other via the speaker hole 313 and the space between the front panel 2 and the front case 3 . In other words, a sound path from the speaker 30 to the sound outlet X is secured.

(Speaker emitted sound path)
As shown in FIG. 4, the sound from the speaker 30 passes through the speaker hole 313, passes through the space between the front panel 2 and the front case 3, and is emitted forward from the sound outlet X. As shown in FIG.

A sound insulation wall 723 is formed on the call button 7 so as to substantially block the space between the front panel 2 and the front case 3 at the lower portion of the sound emitting port X when the call button 7 is not pressed. there is Sound insulation walls 321 are provided above and on both sides of the speaker hole 313 of the front case 3 so as to block the space between the front panel 2 and the front case 3 .

These sound insulation walls 321 and 723 improve the airtightness of the space between the front panel 2 and the front case 3, including the portions communicating with the speaker 30 and the sound emission port X.

<effect>
As described above, according to the present embodiment, the sound path from the speaker 30 to the sound outlet X is secured, and the sound outlet X is located below the lower end of the speaker 30 without facing the speaker 30. is formed to As a result, it is possible to prevent the speaker 30 from being damaged, getting wet with rain water, exposing the speaker 30 to ultraviolet rays, etc., without causing a decrease in volume or sound quality.

Furthermore, by providing a sound insulation wall 723 on the call button 7 and a sound insulation wall 321 on the front case 3, the sound from the speaker 30 is prevented from spreading outside the desired area, and directed to pass through the sound emission opening X, Acoustic performance can be improved.

It should be noted that the present disclosure is not limited to the above-described embodiments in terms of the type, arrangement, number, etc. of the members, and deviates from the gist of the invention, such as by appropriately replacing the constituent elements with those having equivalent effects. It can be changed appropriately as long as it does not occur.

INDUSTRIAL APPLICABILITY The present disclosure is suitable for use in an intercom slave unit of an intercom system.

1 intercom cordless handset 2 front panel 3 front case 4 substrate 5 rear case 6 wall mount adapter 7 call button 8 button holder 20 camera 21 lens 30 speaker 40 microphone 50, 55 LED (Light Emitting Diode)
60 switch 211 camera hole 212 microphone hole 213 emission hole 214 button hole 301 camera protection member 302 light diffusion panel 311 lens hole 312 microphone hole 313 speaker hole 314 button hole 321 sound insulation wall (rib)
401 main board 402 sub-board 402a camera board 402b microphone board 711 light guide lens 721 main part 722a, 722b arm part 723 sound insulation wall (rib)
731 Spring

Claims (3)

the main body;
a speaker attached to the main body;
a front panel having a sound outlet for emitting sound from the speaker and attached to the front of the main body;
and
A sound path from the speaker to the sound outlet is secured between the main body and the front panel,
When viewed from the front in the front-rear direction of the main body, the sound outlet does not face the speaker and is positioned below the lower end of the speaker.
intercom handset. A button hole is formed in the front panel,
a call button that is swingably attached to the front panel and partly exposed from the button hole;
the sound outlet is formed in an upper side portion of the button hole that is not blocked by the exposed portion of the call button;
A sound insulation wall is formed in the call button so as to substantially block the space between the main body and the front panel at the lower part of the sound outlet.
The interphone slave unit according to claim 1. A sound insulation wall is formed on the main body so as to substantially block the space between the main body and the front panel at the upper portion and both outer sides of the speaker.
The interphone slave unit according to claim 1 or 2.

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