| (19) |
 |
|
(11) |
EP 0 477 858 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
28.10.1992 Bulletin 1992/44 |
| (43) |
Date of publication A2: |
|
01.04.1992 Bulletin 1992/14 |
| (22) |
Date of filing: 24.09.1991 |
|
|
| (84) |
Designated Contracting States: |
|
DE FR |
| (30) |
Priority: |
28.09.1990 JP 257082/90
28.09.1990 JP 257088/90
28.09.1990 JP 259124/90
28.09.1990 JP 259137/90
|
| (71) |
Applicant: TOSHIBA LIGHTING &
TECHNOLOGY CORPORATION |
|
Minato-ku,
Tokyo-To (JP) |
|
| (72) |
Inventors: |
|
- Ezaki, Shiro
Yokohama-shi,
Kanagawa-ken (JP)
- Yokokawa, Tetsuya
Yokosuka-shi,
Kanagawa-ken (JP)
- Kimura, Mitsutoshi
Yokosuka-shi,
Kanagawa-ken (JP)
- Ishizuka, Akio
Yokohama-shi,
Kanagawa-ken (JP)
|
| (74) |
Representative: Blumbach Weser Bergen Kramer
Zwirner Hoffmann
Patentanwälte |
|
Radeckestrasse 43
81245 München
81245 München (DE) |
|
| |
|
| (54) |
An inductance coil device and a manufacturing method thereof |
(57) This invention provides a small sized inductance coil and in particular, provides
a small sized flat type inductance coil (11). The inductance coil (11) comprises a
coiled electroconductive member (15) having a wide dimension and a narrow dimension
in directions intersecting one another in cross section and coiled so that the direction
of the wide dimension of said coiled electroconductive member (15) is parallel to
a coiling axis of said coiled electroconductive member (15) and that an outline of
said coiled electroconductive member (15) is formed in a plane.
According to the above structure, the inductance coil (11) does not become so large,
because the width of the electroconductive member (15) in the direction which is parallel
to the plane is small.