Electronic device

Patent metadata

Field	Value
Publication number	US-9823625-B2
Application number	US-201514660653-A
Country	US
Kind code	B2
Filing date	Mar 17, 2015
Priority date	Mar 18, 2014
Publication date	Nov 21, 2017
Grant date	Nov 21, 2017

Abstract

An electronic device includes a dial, a module and a solar panel. The module is arranged under the dial and including a circular polarization antenna which includes a power feed point and a radiating electrode. The solar panel is arranged between the dial and the module and has an area corresponding to an area of the dial in a face direction thereof. The solar panel is constituted by a plurality of solar cells including a solar cell that has a light receiving surface arranged at a position corresponding to the radiating electrode.

First claim

What is claimed is:

1. An electronic device, comprising:
a dial;
a module arranged under the dial and including a circular polarization antenna which includes a power feed point and a radiating electrode; and
a solar panel arranged between the dial and the module and having an area corresponding to an area of the dial in a face direction thereof,
wherein the solar panel comprises a plurality of solar cells, and includes an electrode stacked portion including a metal electrode and a transparent electrode and an electrode removed portion which has been subjected to removal of the metal electrode and the transparent electrode;
wherein a solar cell comprising the electrode stacked portion has a light receiving surface arranged at a position corresponding to the radiating electrode among the plurality of solar cells is electrically connected to an adjacent solar cell; and
wherein the electrode removed portion, in which the metal electrode and the transparent electrode are not present, is provided at least at a part of a region of the solar panel which corresponds to an outer portion of a planar shape of the radiating electrode of the circular polarization antenna, such that the outer portion of the radiating electrode does not overlap with the electrode stacked portion.

2. The electronic device according to claim 1 , wherein:
a pointer shaft is provided in a center of the module,
a plurality of pointers are connected to the pointer shaft to rotate about the pointer shaft on a top face of the dial, and
the circular polarization antenna is arranged at a position away from the pointer shaft.

3. The electronic device according to claim 2 , wherein:
a through hole is provided in the circular polarization antenna, and
the light receiving surface arranged at the position corresponding to the radiating electrode is connected to another light receiving surface via the through hole provided in the circular polarization antenna.

4. The electronic device according to claim 2 , wherein the plurality of solar cells are arranged radially about the pointer shaft in such a manner that pointers moving over the plurality of solar cells overlap at least two solar cells.

5. The electronic device according to claim 2 , wherein the light receiving surface arranged at the position corresponding to the radiating electrode is connected to another light receiving surface at a connecting position apart from the power feed point.

6. The electronic device according to claim 1 , wherein:
a through hole is provided in the circular polarization antenna, and
the light receiving surface arranged at the position corresponding to the radiating electrode is connected to another light receiving surface via the through hole provided in the circular polarization antenna.

7. The electronic device according to claim 6 , wherein:
a pointer shaft is provided in a center of the module,
a plurality of pointers are connected to the pointer shaft to rotate about the pointer shaft on a top face of the dial, and
the plurality of solar cells are arranged radially about the pointer shaft in such a manner that pointers moving over the plurality of solar cells overlap at least two solar cells.

8. The electronic device according to claim 1 , wherein:
a pointer shaft is provided in a center of the module,
a plurality of pointers are connected to the pointer shaft to rotate about the pointer shaft on a top face of the dial, and
the plurality of solar cells are arranged radially about the pointer shaft in such a manner that pointers moving over the plurality of solar cells overlap at least two solar cells.

9. The electronic device according to claim 1 , wherein the light receiving surface arranged at the position corresponding to the radiating electrode is connected to another light receiving surface at a connecting position apart from the power feed point.

Assignees

• Casio Computer Co Ltd

Inventors

• Abe Kazuaki
• Iwanaga Masakuni
• Yano Junro
• Saito Yuta

Classifications

• G04R60/06

  Antennas attached to or integrated in clock or watch bodies · CPC title

• G04R20/04

  Tuning or receiving; Circuits therefor · CPC title

• G04C10/02 Primary

  the power supply being a radioactive {or photovoltaic} source · CPC title

• G04R60/12

  inside metal cases · CPC title

• G04G19/00 Primary

  Electric power supply circuits specially adapted for use in electronic time-pieces · CPC title