Electronic machine

1. An electronic machine comprising:

a casing body having an electronic circuit board insertion port on one surface;

a plurality of electronic circuit boards each including: a circuit board, on which electronic components are mounted; and a front panel connected to the circuit board and having a first conductive side portion located in a longitudinal direction side portion and a second conductive side portion located opposite to the first conductive side portion, the plurality of electronic circuit boards being inserted in parallel through the electronic circuit board insertion port of the casing body with gaps between the front panels adjacent to each other; and

a conduction device having a first bridge body, and in electronic circuit boards adjacent to each other in the plurality of electronic circuit boards, the first bridge body electrically conducting the first conductive side portion of the front panel in one electronic circuit board of the electronic circuit boards adjacent to each other and the second conductive side portion of the front panel in another electronic circuit board that faces the first conductive side portion via a gap,

wherein each of the plurality of electronic circuit boards has a plurality of engagement portions on the first conductive side portion and the second conductive side portion along the longitudinal direction, the conduction means has a plurality of first bridge bodies, and each of the first bridge bodies is a conductive plate having: one end screwed to a selected engagement portion of a plurality of engagement portions provided on the first conductive side portion of the front panel in one electronic circuit board of electronic circuit boards adjacent to each other and another end screwed to a selected engagement portion of a plurality of engagement portions provided on the second conductive side portion of the front panel in another electronic circuit board.

2. The electronic machine according to claim 1 , wherein the casing body has conductive portions on both sides of the electronic circuit board insertion port, and

the conduction device has a second bridge body for electrically conducting one conductive portion of the casing body and the first conductive side portion of the front panel in an electronic circuit board that faces the one conductive portion via a gap and a third bridge body for electrically conducting another conductive portion of the casing body and the second conductive side portion of the front panel in an electronic circuit board that faces the other conductive portion via a gap.

3. The electronic machine according to claim 1 , wherein in the plurality of electronic circuit boards, the plurality of engagement portions provided on the first conductive side portion and the second conductive side portion are holes.

4. The electronic machine according to claim 3 , wherein in the plurality of electronic circuit boards, the holes serving as the plurality of engagement portions provided on the first conductive side portion and the second conductive side portion are internally threaded.

5. The electronic machine according to claim 1 , wherein the conduction device has a plurality of first bridge bodies, and

each of the first bridge bodies has a spring-shaped retaining portion inserted through a gap located between electronic circuit boards adjacent to each other and serving as position deviation and retention.

6. The electronic machine according to claim 2 , wherein in the plurality of electronic circuit boards, the plurality of engagement portions provided on the first conductive side portion and the second conductive side portion are holes.

7. The electronic machine according to claim 6 , wherein in the plurality of electronic circuit boards, the holes serving as the plurality of engagement portions provided on the first conductive side portion and the second conductive side portion are internally threaded.

8. The electronic machine according to claim 2 , wherein the conduction device has a plurality of first bridge bodies, and

each of the first bridge bodies has a spring-shaped retaining portion inserted through a gap located between electronic circuit boards adjacent to each other and serving as position deviation and retention.

9. An electronic machine comprising:

a casing body having an electronic circuit board insertion port on one surface;

a plurality of electronic circuit boards each including: a circuit board, on which electronic components are mounted; and a front panel connected to the circuit board and having a first conductive side portion located in a longitudinal direction side portion and a second conductive side portion located opposite to the first conductive side portion, the plurality of electronic circuit boards being inserted in parallel through the electronic circuit board insertion port of the casing body with gaps between the front panels adjacent to each other; and

conduction means having a first bridge body, and in electronic circuit boards adjacent to each other in the plurality of electronic circuit boards, the first bridge body electrically conducting the first conductive side portion of the front panel in one electronic circuit board of the electronic circuit boards adjacent to each other and the second conductive side portion of the front panel in another electronic circuit board that faces the first conductive side portion via a gap,

wherein the conduction means has a plurality of first bridge bodies, and

each of the first bridge bodies has a spring-shaped insertion portion inserted into a gap located between electronic circuit boards adjacent to each other and for applying pressure to facing side surfaces of the electronic circuit boards adjacent to each other,

wherein a surface of the front panel of each of the plurality of electronic circuit boards is made of a nonconductive member, the first conductive side portion and the second conductive side portion are longitudinal side surfaces, and the insertion portion of each of the plurality of first bridge bodies is made of a conductive member.

10. The electronic machine according to claim 9 , wherein

the casing body has conductive portions on both sides of the electronic circuit board insertion port, and

the conduction means has a second bridge body for electrically conducting one conductive portion of the casing body and the first conductive side portion of the front panel in an electronic circuit board that faces the one conductive portion via a gap and a third bridge body for electrically conducting another conductive portion of the casing body and the second conductive side portion of the front panel in an electronic circuit board that faces the other conductive portion via a gap.