JPS59223096A - Combined head phone with microphone - Google Patents

Abstract

PURPOSE:To realize an inexpensive head phone with a microphone by using a dynamic loudspeaker not only as a sound outputting means, but also as a sound inputting means, namely, as a microphone. CONSTITUTION:A dynamic loudspeaker 7 is fixed to a buffle 8 and sounds are discharged from the sound releasing hole of the buffle 8 through a pad 3. The outside air can enter a space formed by a speaker box 2 and buffle 8 by means of a pipe 4 through a sound colector 5. A sound which enters through a notch 9 passes through the pipe 4 and vibrates the air in the speaker box 2. Then the vibrated air moves the diaphragm of the dynamic loudspeaker 7 and the sound is transduced into an electric signal. Since the diaphragm of the loudspeaker 7 is made light and thin, the sounds can be detected over a range from a low to high temperature. Since the transceiver equipped with this loudspeaker 7 does not make transmission and reception simultaneously, the dynamic loudspeaker 7 works as a loudspeaker at the time of transmission and as a microphone at the time of reception.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a handphone with a microphone used in a transceiver or the like.

Conventionally, most headphone headphones with a microphone have a condenser microphone placed from near the speaker box on one side of the headphone to the mouth using a flexible 7' pipe or the like. L
However, in toy transceivers, the headphone with a microphone has a disadvantage in that it accounts for a large proportion of the cost, and it has been desired to reduce the price of the headphone with a microphone.

The present invention focuses on the fact that the diaphragm of a headphone speaker is thin and light, so it can pick up sound with almost the same frequency characteristics as a dynamic microphone, and provides a structure that allows the speaker to double as a microphone, thereby producing inexpensive headphones with a microphone. The purpose is to cultivate it.

Hereinafter, the present invention will be explained in detail based on FIGS. 1 to 4. FIG. 1 is an external view of an embodiment of the present invention, and FIG. 2 is a sectional view of the speaker box section in FIG. 1. 1 and 2, 1 is a hair band, 2 is a speaker box, 3 is a pad, 4 is a pipe that amplifies the sound from the mouth and guides the sound into the speaker box 2, and 5 is a sound collector; is a code that transmits electrical signals. In FIG. 2, reference numeral 7 designates an electrodynamic sub-category having a thin and light diaphragm, and a baffle 81C, which emits sound from the sound emitting hole of the baffle 8 through the pad 3. The space created by the speaker box 2 and the baffle 8 allows outside air to enter and exit through a pipe 4 and a sound collector 5. FIG. 3 is a diagram showing an example of the structure of a sound collecting section, in which there is a notch 9 near the tip of the pipe 4 that serves as an entrance for sound, and this is made so as to face the user's mouth. It is covered with a sponge 10 to prevent wind noise. The sound entering from the notch 9 is transmitted through the pipe 4 and vibrates the air inside the speaker box 2. Then, electrodynamic speaker 7
It moves the diaphragm of the diaphragm and converts sound into electrical signals. Since the diaphragm of the electrodynamic speaker 7 is thin and light, it can detect everything from low tones to high temperatures. Therefore, even when used as a microphone, the sound is not muffled and clear sound quality can be obtained.

Transceivers do not transmit and receive at the same time.
The electrodynamic speaker 7 functions as a speaker during reception, and functions as a personal phone during transmission.

FIG. 4 is a block diagram of a transceiver when the speaker also serves as a microphone. 11 is an antenna, 12 is a receiving circuit for reproducing audio signals, and an audio amplifier for amplifying the 13Fi audio signal, which drives the dynamic N-type speaker 7.

The illustrated state is a receiving state, but if the two illustrated switches are simultaneously switched, the transmitting state is established. In this case, the audio signal received by the electrodynamic speaker 7 is amplified by the audio amplifier 13 and modulated by the transmitting circuit 14. High frequency waves are emitted from the antenna 11.

As described above, according to the present invention, it is possible to actually see a transceiver of the transceiver type at a lower cost, and at the same time, the sound quality of the microphone can be obtained as high as that of a dynamic microphone.

[Brief explanation of drawings]

Fig. 1 is an external view of an embodiment of the present invention, Fig. 2 is a sectional view of the speaker box section, Fig. 3 is a diagram showing an example of the structure of the sound collector, and Fig. 4 is a diagram showing the structure of the speaker box. FIG. 2 is a block diagram of a transceiver for dual use. 1...Hair band 2...Speaker box 3...Pad 4...Pipe 5...°゛...Sound collector 6...Cord 7... Electrodynamic speakers and above Applicant Daini Seikogo Co., Ltd. No. 1121 Figure 2 Figure 3 [2] Figure 4

Claims (1)

[Claims] A hair band, a speaker box attached to the end of the band, a pipe that guides the space inside the speaker box to the mouth of the headphone user, and an electrodynamic speaker attached to the baffle surface of the speaker box,
Headphones that also function as a microphone, characterized in that the electrodynamic speaker is used not only as a voice output means, but also as a microphone, which is a voice input means.