JPH04132764U - Door phone handset - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) The present invention relates to an intercom door intercom unit that is attached to the entrance, door, gatepost, etc. of a residence or office, etc., and allows calls to be made both indoors and outdoors. .

(Background Art) In general, doorbells are widely used in residences from the viewpoint of crime prevention and the like.

Conventionally, there is an example of this type of door intercom handset h as shown in FIG. 6, which includes a handset body d in which devices such as a speaker a, a microphone b, a push button switch c, etc. are installed, and a handset body d that can be attached or detached from the body d. It consists of a cover e that can be attached, and a sound input/output grating f is provided on the front of the cover e to give directivity to the sound of the speaker a.

(Problem to be solved by the invention) In the door intercom handset described in the conventional example, as shown in FIG. 8, since the position m of the caller cannot be specified, an omnidirectional microphone b is used. Since microphone b and speaker a are located close to each other, when the sensitivity of microphone b is increased, the sound from speaker a wraps around, causing howling. There is a problem in that it is not possible to prevent this (see Figure 9).

The present invention was devised in view of the above-mentioned actual situation, and its purpose is to provide a door intercom slave unit that can prevent howling during calls and improve microphone sensitivity to improve conversation performance. It is on offer.

(Means for solving the problem) In the present invention, the following measures were taken to achieve the above object.

That is, the present invention provides a door intercom handset consisting of a handset body and a cover to which devices such as a speaker, a microphone, a switch, etc. are attached, and the microphone is mounted so as to be swingable or swingable up and down and left and right. There is.

(Function) According to the present invention, since the highly directional microphone attached to the main body of the handset can be directed toward the caller, the echoing of the speaker sound is reduced and howling can be prevented.

(Example) Hereinafter, an example of the present invention will be described based on the drawings.

FIGS. 1 to 3 show an embodiment, and 1 is a doorphone slave unit with a microphone 2, a speaker 3, and a push button 4.
It consists of devices such as, a substantially box-shaped handset main body 5 to which these devices are attached, and a substantially box-shaped cover 6 fitted to the main body 5.

The microphone 2 and the speaker 3 are located at both the upper and lower ends, and are arranged so that the distance between them is as long as possible. The microphone 2 is of a unidirectional (high directivity) type, and as shown in FIG. 3, a horizontal shaft-shaped microphone adjustment lever 8 is rotatably attached to a square plate-shaped microphone holder 7. The sound inlet side is attached so that it can swing vertically through the . A microphone fitting hole 9 is provided at the center of the front surface of the microphone holder 7, and a lever support hole 10 is provided orthogonally to the hole 9, and the lever support hole 10 is rotatably inserted into the hole 10 and rotated by a rubber pusher 11. Unless the microphone 2 is rotated vertically, the adjusted position of the microphone 2 is maintained. Further, a vertical shaft 12 is fixed to the center of the upper and lower surfaces of the microphone holder 7, and the vertical shaft 12 is rotatably supported by the handset main body 5. , the microphone 2 is configured to swing left and right.

The handset main body 5 is provided with a rectangular microphone opening 13 on the front surface 5a corresponding to the microphone 2, and a lever insertion opening 14 that is long in the front-back direction is provided on the side wall 5b.

A speaker sound outlet 15 with grid-like directivity is provided on the front surface of the cover 6, and a sound inlet 16 of the microphone 2 is provided corresponding to the microphone opening 13, and further corresponding to the push button switch 4. A push button 4a is attached thereto. Incidentally, it is preferable that the speaker sound outlet 15 is oriented such that the sound 2 is emitted in both left and right directions.

In the embodiment described above, since the microphone 2 has high directivity, by emitting sound from the speaker in the left-right direction, the amount of sound going around to the microphone 2 is extremely reduced, and howling is prevented. Furthermore, by instructing the caller to hold the microphone adjustment lever 8 and point the microphone 2 in the direction of the caller, voice input can be ensured and communication performance can be improved. That is, it is possible to provide the microphone directivity as shown by the two-dot chain line 17 in FIGS. 4 and 5, and it is possible to reliably input the voice of the caller 18, and to reduce the sound feedback from the speaker 3. .

The present invention is not limited to the above-mentioned embodiment, and the microphone can be supported in a swingable manner using, for example, a spherical support mechanism.

(Effects of the invention) As described above, this invention provides a door intercom handset consisting of a handset body and a cover to which devices such as a speaker, a microphone, and a switch are attached, in which the microphone oscillates or swings vertically and horizontally. Since it is possible to install the speaker, it is possible to increase the sensitivity by using a highly directional speaker, and it also reduces the amount of sound reflected from the speaker, prevents the occurrence of howling, and improves communication performance. I can do it.

[Brief explanation of the drawing]

Figures 1 to 5 show an embodiment of the present invention. Figure 1 is an overall perspective view, Figure 2 is an enlarged perspective view of the main part of the handset body, and Figure 3 is an enlarged perspective view of the microphone holder. 4 and 5 are plan and side views for explaining microphone directivity, FIGS. 6 to 9 show conventional examples, FIG. 6 is a front view, FIG. 7 is a plan view, and FIG.
9 and 9 are a plan view and a side view for explaining the microphone directivity. 1...Door phone handset, 2...Microphone, 3
... Speaker, 4 ... Push button switch, 5 ... Handset main body, 6 ... Cover, 7 ... Microphone holder, 8 ...
...Microphone adjustment lever.

Claims (1)

[Scope of utility model registration request] 1. A door intercom handset consisting of a handset body and a cover to which devices such as a speaker, a microphone, a switch, etc. are attached, and a cover, wherein the microphone is mounted so as to be swingable or swingable up, down, left and right.