JPH09294295A - Antibacterial headphone - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the ear pad clean at all times by applying antibacterial treatment to a part of the ear pad at least 10 contact with ears so as to stop the propagation of bacteria on the ear pad. SOLUTION: An antibacterial headphone 1 is used for, e.g. an electronic piano with a silencing playing function and is provided with a head band 2, a couple of ear pads 3, 3 fitted to both ends of the head band 2, a cord 4 extended from the ear pads 3, and a ;lug 5 at each tip of the cord 4. The ear pad 3 is made up of a case 6 and a cover 7 fitted to the inside of the case 6, and each cover 7 in direct contact with each ear is made of a synthetic resin in which an antibacterial agent is blended. Thus, the propagation of bacteria on the cover 7 is stopped by the antibacterial action of the antibacterial agent so as to keep the cover 7 clean at all times. Thus, playing is conducted pleasantly without caring about invasion of bacteria in the body via the ear.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antibacterial headphone having an antibacterial function for suppressing the growth of bacteria.

[0002]

The present applicant has already disclosed an antibacterial keyboard in which the keyboard of a keyboard instrument is subjected to antibacterial treatment (Japanese Patent Application No. 7-1.
07374). The antibacterial function is added to the keyboard, especially in the case of keyboard musical instruments, because it is often shared by many people in schools, etc., and bacteria attached to the finger of one person plays next through the keyboard. This is because there is a risk that the finger may move to the finger of another person.

[0003]

By the way, there is a recent keyboard instrument such as an electronic piano or an acoustic piano with a mute performance function, which plays while listening to the performance sound through headphones. Needless to say, when using headphones, the ear pads are applied directly to the ears. Therefore, considering the recent trend toward cleanliness, not only the keyboard but also the headphones
It is preferable to maintain cleanliness at all times to prevent bacteria from entering the body via the ears.

The present invention has been made in order to solve such problems, and provides antibacterial headphones capable of always maintaining cleanliness by suppressing the growth of bacteria in the ear pads. Is intended.

[0005]

In order to achieve the above object, an antibacterial headphone of the present invention is provided with an ear pad to be mounted on an ear, and at least a portion of the ear pad that comes into contact with the ear is subjected to an antibacterial treatment. It is characterized by being. According to this antibacterial headphone, since the part of the ear pad that comes into contact with the ear is subjected to antibacterial treatment, the action of the antibacterial agent contained therein prevents the growth of bacteria at the part that comes into contact with the ear. , Always kept clean. As a result, without worrying about the invasion of bacteria into the body via the ear,
You can use the headphones with confidence.

In this case, the ear pad has a case and a cover detachably attached to the inside of the case, and the cover is made of a synthetic resin mixed with an antibacterial agent and molded. It is preferable. According to this configuration,
The cover becomes the part that comes into contact with the ear, and the antibacterial function can be easily added to the cover only by mixing the antibacterial agent with the synthetic resin before molding. In addition, the cover is detachably attached to the case, so if the antibacterial effect weakens due to long-term use etc., simply replace the cover with a new one to easily restore the antibacterial function. be able to.

In this case, it is preferable that the antibacterial agent is mixed with the synthetic resin in a ratio of 0.5 to 2.0% by weight. If the content of the antibacterial agent is less than 0.5%, the antibacterial effect is not sufficiently exerted, while if it exceeds 2.0%, the antibacterial effect does not increase so much, the cost is high, and the relationship such as strength is high. Therefore, molding becomes difficult. Therefore, by setting the content of the antibacterial agent in the above range, the antibacterial effect can be efficiently exhibited.

In these cases, it is preferable that the antibacterial agent contains one or more metals selected from the group consisting of silver, copper and zinc. Since all of these metals have antibacterial activity, the antibacterial effect can be effectively exhibited by mixing them with a synthetic resin. Of these metals, metallic silver is used as crowns and tableware,
It is particularly preferable because it is highly safe for the human body, and in that case, it is more preferable to use calcium phosphate as a carrier carrying metallic silver. This is because calcium phosphate is used as a standard for food additives and cosmetic raw materials and is as safe as metallic silver.

Alternatively, the antibacterial agent is preferably a ceramic body obtained by sintering and mixing metallic silver and calcium phosphate. Such a ceramic body is produced, for example, by sintering a mixture of calcium phosphate and a silver compound at a high temperature of 1000 ° C. or higher, and converting all silver ions in the silver compound into metallic silver in this sintering process. . Since the ceramic body is subjected to high heat treatment, there is no risk of decomposition, deterioration or discoloration even when mixed with synthetic resin and molded, and it has excellent stability without elution or volatilization. Antimicrobial activity is retained when used. In addition, discoloration due to elution of silver ions does not occur.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Preferred embodiments of the present invention will now be described in detail with reference to the drawings. FIG. 1 shows headphones to which the present invention is applied. The antibacterial headphone 1 is used, for example, in an electronic piano with a mute performance function, and includes a headband 2, a pair of ear pads 3 and 3 attached to both ends of the headband 2, and an ear pad 3. Extension cord 4 and plug 5 at its tip
And In the case of mute performance, the plug 5 is connected to an output terminal for headphones (not shown) of the electronic piano, and the ear pads 3 and 3 are applied to both ears to listen to the performance sound while performing.

Each of the ear pads 3 comprises a case 6 and a cover 7 attached to the inside thereof, and these are all formed by integrally molding synthetic resin. The cover 7 has a shape as shown in FIG. 2 and is detachably attached to the case 6 by screwing or fitting with the case 6. Further, since the cover 7 corresponds to a portion that directly contacts the ear, it is manufactured while performing antibacterial treatment, for example, by the following method.

Methyl methacrylate resin pellets as acrylic resin and "Apacider A" as antibacterial agent.
(Manufactured by Sangi Co., Ltd.), 0.5 to 2.0% by weight of apacider A is mixed with the methyl methacrylate resin, and the mixture is uniformly dispersed. Then, the cover 7 is molded by an injection molding machine. Note that Apacider A has calcium phosphate (hydroxyapatite or tricalcium phosphate) as a carrier, on which metallic silver is supported, and 1000 parts of a mixture of calcium phosphate and a silver compound is used.
Sintering is performed at a high temperature of ℃ or more, and in this sintering process, a ceramic body in which all silver ions in the silver compound are metallic silver is produced. The fact that all silver ions became metallic silver was analyzed by atomic absorption spectrometry (analysis limit was 0.05 ppm),
This can be confirmed by the fact that silver ions do not elute in water at all.

As described above, according to the antibacterial headphone 1, since the cover 7 that directly comes into contact with the ears during use is made of the synthetic resin mixed with the antibacterial agent, the antibacterial effect of the antibacterial agent is achieved. It is possible to prevent the growth of bacteria on the cover 7 and keep it clean at all times. Therefore, it is possible to comfortably and comfortably perform without worrying about the invasion of bacteria into the body through the ear. Further, since the cover 7 is originally manufactured by molding synthetic resin, the antibacterial effect can be easily imparted only by mixing the antibacterial agent before molding as in the present embodiment.

Furthermore, since Apacider A, that is, a ceramic body obtained by sintering and mixing metallic silver and calcium phosphate is used as an antibacterial agent, it is highly safe to the human body and environment due to its components, and it must be a ceramic body. Therefore, it is also excellent in stability and can exert an antibacterial effect for a long period of time. Also, the cover 7 is the case 6
Even if the antibacterial effect is weakened due to long-term use, the antibacterial function can be easily restored only by replacing the cover 7 with a new one.

The present invention is not limited to the embodiments described above, but can be implemented in various modes.
For example, in the embodiment, an example in which the present invention is applied to headphones for an electronic piano has been described, but it goes without saying that the present invention can also be applied to headphones used for other purposes such as for audio equipment. Further, as a modified example of the present invention, for example, it is also possible to apply to an earphone such as a portable tape recorder. Further, the kind of the antibacterial agent is not limited to the exemplified apacider A, that is, a ceramic body obtained by sintering and mixing metallic silver and calcium phosphate, and may include other metals such as copper and zinc having antibacterial activity. As the carrier, a substance other than calcium phosphate may be used, and it is not essential that the carrier be in the form of a ceramic body. In addition, the configuration of the details can be appropriately changed without departing from the spirit of the present invention.

[0016]

As described above in detail, the antibacterial headphone of the present invention has an effect that the cleanliness can be always maintained by suppressing the growth of bacteria in the ear pad.

[Brief description of drawings]

FIG. 1 is a perspective view of an antibacterial headphone to which the present invention is applied.

2 is a perspective view showing a cover of the antibacterial headphones of FIG. 1. FIG.

[Explanation of symbols]

 1 Antibacterial headphones 3 Ear pads 6 Case 7 Cover

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display area A01N 59/20 A01N 59/20 Z // H04R 1/12 H04R 1/12

Claims (5)

[Claims] 1. An antibacterial headphone comprising an earpiece attached to an ear, and at least a portion of the earpiece that comes into contact with the ear is subjected to antibacterial treatment. 2. The ear pad has a case and a cover detachably attached to the inside of the case, and the cover is made of synthetic resin mixed with an antibacterial agent. The antibacterial headphone according to claim 1, wherein: 3. The antibacterial headphone according to claim 1, wherein the antibacterial agent is mixed in a proportion of 0.5 to 2.0% by weight with respect to the synthetic resin. 4. The antibacterial headphone according to claim 1, wherein the antibacterial agent contains at least one metal selected from the group consisting of silver, copper and zinc. 5. The antibacterial headphone according to claim 1, wherein the antibacterial agent is a ceramic body obtained by sintering and mixing metallic silver and calcium phosphate.