JPH02113490U - - Google Patents
Info
- Publication number
- JPH02113490U JPH02113490U JP2301789U JP2301789U JPH02113490U JP H02113490 U JPH02113490 U JP H02113490U JP 2301789 U JP2301789 U JP 2301789U JP 2301789 U JP2301789 U JP 2301789U JP H02113490 U JPH02113490 U JP H02113490U
- Authority
- JP
- Japan
- Prior art keywords
- electroacoustic transducer
- acoustic groove
- plate
- headphone device
- back cavity
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Headphones And Earphones (AREA)
- Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2301789U JPH02113490U (en]) | 1989-02-28 | 1989-02-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2301789U JPH02113490U (en]) | 1989-02-28 | 1989-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02113490U true JPH02113490U (en]) | 1990-09-11 |
Family
ID=31241655
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2301789U Pending JPH02113490U (en]) | 1989-02-28 | 1989-02-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02113490U (en]) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385694A (zh) * | 2018-12-26 | 2020-07-07 | 铁三角有限公司 | 头戴式耳机 |
| JP2020191511A (ja) * | 2019-05-20 | 2020-11-26 | 株式会社オーディオテクニカ | ヘッドホン |
-
1989
- 1989-02-28 JP JP2301789U patent/JPH02113490U/ja active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111385694A (zh) * | 2018-12-26 | 2020-07-07 | 铁三角有限公司 | 头戴式耳机 |
| JP2020107947A (ja) * | 2018-12-26 | 2020-07-09 | 株式会社オーディオテクニカ | ヘッドホン |
| CN111385694B (zh) * | 2018-12-26 | 2023-11-03 | 铁三角有限公司 | 头戴式耳机 |
| JP2020191511A (ja) * | 2019-05-20 | 2020-11-26 | 株式会社オーディオテクニカ | ヘッドホン |