In-vehicle device

1 . An in-vehicle device comprising:

a substrate on which a power supply circuit unit to which a voltage and a current of an in-vehicle battery are supplied and which distributes the voltage and the current therein and a power supply-related component around the power supply circuit unit are mounted;

a connector which is mounted on the substrate and electrically connects an external device and the substrate; and

a housing which accommodates the substrate therein and includes a connector attachment portion which defines an attachment position of the connector, wherein:

the housing includes at least one wall portion protruding toward the substrate inside the housing and extending along an attachment direction of the connector;

the at least one wall portion is disposed at a position overlapping the connector when viewed from the attachment direction of the connector;

a first wall portion and a second wall portion which are disposed to face each other with the power supply-related component interposed therebetween are provided as the at least one wall portion;

a gap which a foreign solid matter is able to intrude from an outside of the housing is formed between the connector and the connector attachment portion;

the housing includes a front surface portion on which the connector attachment portion is provided and a back surface portion facing the front surface portion;

the first wall portion is disposed at a position overlapping a first connector in the connector when viewed from the attachment direction of the connector;

when a state where a test probe having a diameter of 1 mm and a length of 100 mm is pushed in with a pressing force of 1 N through a gap between a second connector adjacent to the first connector and the connector attachment portion disposed around the second connector on the first connector side, the test probe comes into contact with a corner portion of the second connector on the front surface portion side, and the test probe comes into contact with a corner portion of the connector attachment portion on the back surface portion side is defined as a first maximum movable state of the test probe toward the power supply-related component; and

in the first maximum movable state, the first wall portion extends from the back surface portion toward the front surface portion up to a position where a distal end portion of the test probe abuts on the first wall portion.

2 . The in-vehicle device according to claim 1 , wherein;

at least one of the first wall portion and the second wall portion is disposed to cover the gap between the connector and the connector attachment portion.

3 . The in-vehicle device according to claim 1 , wherein:

the in-vehicle device satisfies IP4X defined in IEC standard 60529.

4 . The in-vehicle device according to claim 1 , wherein:

the connector attachment portion is provided in the front surface portion of the housing, and

the first wall portion extends toward the front surface portion starting from the back surface portion of the housing facing the front surface portion, so as to intersect with a boundary line defining a maximum movable region of the foreign solid matter intruding through the gap between the connector and the connector attachment portion.

5 . The in-vehicle device according to claim 1 , wherein:

a height of the at least one wall portion is a height that does not allow contact with the substrate.

6 . The in-vehicle device according to claim 1 , wherein:

the first wall portion is disposed closer to a center of the housing than the second wall portion.

7 . The in-vehicle device according to claim 1 , wherein:

the at least one wall portion is integrally formed with the housing.

8 . The in-vehicle device according to claim 1 , wherein;

the at least one wall portion is a member separate from the housing.

9 . The in-vehicle device according to claim 1 , wherein:

a plurality of connectors are provided, and

a gap into which a test probe having a diameter of 1 mm and a length of 100 mm is able to be pushed with a pressing force of 1 N is formed between each of the plurality of connectors and the connector attachment portion disposed around each of the plurality of connectors.

10 . The in-vehicle device according to claim 1 , wherein:

a gap into which a test probe having a diameter of 1 mm and a length of 100 mm is able to be pushed with a pressing force of 1 N is formed between the first connector and the connector attachment portion disposed below the first connector,

the connector is mounted on the substrate without any gap from the substrate, and

when the test probe is pushed in through the gap between the first connector and the connector attachment portion disposed below the first connector, the distal end portion of the test probe abuts on an end portion of the substrate on the connector attachment portion side.

11 . The in-vehicle device according to claim 1 , wherein

when a state where a test probe having a diameter of 1 mm and a length of 100 mm is pushed in with a pressing force of 1 N through a gap between the first connector and the connector attachment portion disposed around a left and a right of the first connector and provided on an opposite side of the second connector, the test probe comes into contact with a corner portion on the front surface portion side of the connector attachment portion disposed around the first connector, and the test probe comes into contact with a corner portion of the first connector on the back surface portion side is defined as a second maximum movable state of the test probe toward the power supply-related component,

in the second maximum movable state, the second wall portion extends from the back surface portion toward the front surface portion up to a position where the distal end portion of the test probe abuts on the second wall portion.