JPS5939670Y2 - Dial structure with Taiyo battery - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to a dial structure with a solar cell.

Generally, the voltage generated per solar cell is low, and therefore a plurality of solar cells are provided and electrically connected in series to create the voltage required by the load section.

As shown in FIG. 1, the electrical connection structure of this solar cell is such that the solar cells 10, 10' are arranged in a three-dimensional order in an oblique state, and the solar cell 10 is electrically conductive with the adjacent solar cell 1σ. A device is known in which electrical conduction is achieved without using a member, but the ends of the solar cell 10 are exposed and unsightly, and the thickness t of the overlapped portion of the solar cell 10 and the solar cell 10' is Increasing size and pursuing thinner design
This is not a good thing as it goes against the ideal of a watch without a clock.

In addition, as shown in FIG. 2, the solar cells 10, 10' are arranged in a planar order in an orderly manner, and a conductive member such as a wire is connected between them.
Some devices have a structure in which electrical connections are made by bonding, but this bonding process is extremely difficult, and there is a risk that the wires may be accidentally cut when handling the solar cells that have been connected.

The present invention was devised in view of the above-mentioned problems, and involves fixing a solar cell having an upper electrode on one side and a lower electrode on the other side at a predetermined position on the electrode pattern of a printed circuit board that is attached to a metal substrate. Electrically connecting the lower electrode to the electrode pattern - On the other hand, the upper end of the conductive rubber is brought into contact with the upper electrode, and the lower end of the conductive rubber is brought into contact with the electrode pattern to connect the upper electrode through the conductive rubber. electrically connected to the electrode pattern, stacking a plastic dial plate from above to press and hold the solar cell against the printed circuit board via the conductive rubber, and providing a light-receiving surface of the solar cell on the plastic dial plate; The outer periphery of the plastic dial plate is exposed through a window, and the outer periphery of the plastic dial plate is hooked to the outer periphery of the metal substrate, and the structure allows easy and reliable electrical connection between solar cells. The purpose is to provide

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

3 and 4 show examples of the present invention, in which 10 is a solar cell having one electrode section 11 on the top surface and the other electrode section 12 on the bottom surface, and 20 is a solar cell with printed wiring on the top surface. This is a printed circuit board on which an electrode pattern 21 is provided, and this printed circuit board 20 is made of a flexible thin sheet.

Reference numeral 30 is a cross-sectional conductive rubber whose upper end 31 is in contact with the upper surface electrode 11 and whose lower end 32 is in contact with the electrode pattern 21 .

40 is a metal substrate having legs 41 on its lower surface, and the printed circuit board 20 is attached to the upper surface of this metal substrate 40.

50 is a plastic dial plate, and conductive rubber 30 is attached to the outer periphery of the lower surface.
Hook part 5 for fixing the dial plate 50 to the recess 51 where it is stored.
2 is provided.

53 is a window for directing outside light to the solar cell 10.

The solar cell 10 is fixed to a predetermined position on the electrode pattern 21 of the printed circuit board 20 by soldering, so that the lower surface electrode 12 of the solar cell 10 is electrically connected to the electrode pattern 21.

On the other hand, the upper surface electrode 11 is electrically connected to the electrode pattern 21 via the conductive rubber 20.

The cut plastic dial 50 has a hook portion 5 on the outer periphery of the metal substrate 40.
2 and is firmly fixed to the metal substrate 40, the conductive rubber 30 attached to the recess 51 is attached to the printed circuit board 2.
0, and is strongly and reliably in contact with the upper surface electrode 11 and the pattern electrode 21.

As described above, according to the present invention, the lower electrode of the solar cell is fixed to the electrode pattern of the printed circuit board, the upper electrode is electrically connected to the electrode pattern through the conductive rubber, and conductive by suppressing the plastic dial plate. Since the structure has a reliable rubber contact, electrical connection between the solar cells can be easily and reliably established.

In addition, when an external force is applied to the plastic dial, the elasticity of the conductive rubber reduces the impact force applied to the top surface of the solar cell, making the solar cell resistant to cracking.

[Brief explanation of the drawing]

1 and 2 are side views showing electrical connection arrays of a conventional solar cell, and FIGS. 3 and 4 are top views and sectional views showing an embodiment of the present invention.

Claims (1)

[Scope of utility model registration request] A printed circuit board is attached to the upper surface of a metal substrate having legs on the lower surface, a solar cell is fixed at a predetermined position on the electrode pattern of the printed circuit board, and the lower electrode of the solar cell is electrically connected to the electrode pattern, On the other hand, the upper end of the conductive rubber is brought into contact with the upper electrode of the solar cell, and the lower end of the conductive rubber is brought into contact with the electrode pattern of the printed circuit board, so that the upper end of the solar cell is brought into contact with the electrode pattern of the conductive rubber. The solar cell is electrically connected to the printed circuit board from above exclusively via the conductive rubber, and the light-receiving surface of the solar cell is provided on the plastic dial. A dial plate structure with a solar cell, characterized in that a hook portion exposed through a window and provided on the outer periphery of the plastic dial plate is engaged with the outer periphery of the metal substrate.