| 摘要 |
First and second tapered holes are provided at facing positions of the first and second circuit boards. The elastic spacer including first and second spacers is attached between them to couple the two in parallel and thereby facilitate attachment of the two to a back panel. The first spacer is provided at one end part with a tapered part which fits with the first tapered hole and the second spacer is provided at one end part with a tapered part which fits with the second tapered hole. A spring is inserted between the two spacers. The first spacer is fit in the tapered hole and fastened by a screw to the first circuit board. The second circuit board is fastened by a screw to the first spacer in a state fitting the second tapered hole over the second spacer with the second circuit board approaching the first circuit board. |
