In-vehicle sound emitting device
One form of an in-vehicle sound emitting device includes a front case and a rear case. The front case is partitioned from the rear case by a partition plate made from a metal plate. Rear space inside the rear case is sealed, and an electronic circuit is disposed in the rear space. A loudspeaker is mounted in front space inside the front case. By using two of the partition plates having the same structure, the front case having the incorporated loudspeaker and the rear case having the incorporated electronic circuit can be disposed separately.
1. An in-vehicle sound emitting device comprising:
a case;
a loudspeaker incorporated in the case; and
an electronic circuit incorporated in the case,
wherein the case includes a front case that forms front space, a rear case that forms rear space, and a partition plate that partitions the front space from the rear space,
wherein the loudspeaker is incorporated in the front space, and the electronic circuit is incorporated in the rear space, and
wherein the front case is fastened to the partition plate by a front screw fastening unit, the rear case is fastened to the partition plate by a rear screw fastening unit, and the front screw fastening unit and the rear screw fastening unit are disposed at different locations in a plate surface direction of the partition plate.
2. The in-vehicle sound emitting device according to claim 1 , wherein:
no hole of the front screw fastening unit is present in a partition wall portion of the partition plate that covers an opening of the rear case with the rear case fastened to the partition plate; and
a hole of the rear screw fastening unit is present in the partition wall portion of the partition plate that covers an opening of the front case with the front case fastened to the partition plate.
3. The in-vehicle sound emitting device according to claim 2 , wherein the front screw fastening unit is located on the outer side of the rear screw fastening unit in the partition wall portion of the partition plate.
4. The in-vehicle sound emitting device according to claim 3 , wherein:
the front case has a flange-like front joining/fixing portion including the front screw fastening unit, and the rear case has a flange-like rear joining/fixing portion including the rear screw fastening unit, and
the front screw fastening unit is located on the outer side of the rear joining/fixing portion so as not to overlap the rear joining/fixing portion as viewed in a front-rear direction, and the rear screw fastening unit is located on the inner side of the front joining/fixing portion so as not to overlap the front joining/fixing portion as viewed in the front-rear direction.
5. The in-vehicle sound emitting device according to claim 1 , wherein:
two of the partition plates having the same structure are used,
the front case is fastened to one of the partition plates, and the rear case is fastened to the other, and
the front case and the rear case are installed in a vehicle body with the front case and the rear case being separated from each other.
6. The in-vehicle sound emitting device according to claim 5 , wherein:
no hole of the front screw fastening unit is present in a partition wall portion of the partition plate that covers an opening of the rear case with the rear case fastened to the partition plate, and
a hole of the rear screw fastening unit is present in the partition wall portion of the partition plate that covers an opening of the front case with the front case fastened to the partition plate.
7. The in-vehicle sound emitting device according to claim 6 , wherein the front screw fastening unit is located on the outer side of the rear screw fastening unit in the partition wall portion of the partition plate.
8. The in-vehicle sound emitting device according to any one of claim 1 , wherein:
the partition plate is made of a metal, and
the partition plate is in direct contact with a heat generating part of the electronic circuit inside the rear space or in indirect contact with the heat generating part via a heat transfer member.