An on-vehicle electronic device comprising: at least one guide unit (21, 22) including a pair of first and second guide units (21, 22); a device main body that reciprocates along the guide unit (21, 22); and a drive mechanism that causes the device main body to reciprocate, wherein the drive mechanism includes at least one drive arm (31, 41) that has a base portion (31a, 41a) supported such that the drive arm (31, 41) is rotatable about at least one support shaft (33, 43), a rotation driver that rotates the drive arm (31, 41), and at least one connection link (36, 46) that connects a tip portion (31b, 41b) of the drive arm (31, 41) and the device main body, wherein the connection link (36, 46) and the drive arm (31, 41) are connected to each other such that the connection link (36, 46) and the drive arm (31, 41) are rotatable relative to each other about an arm-side connection shaft (34, 44), and wherein the connection link (36, 46) and the device main body are connected to each other such that the connection link (36, 46) and the device main body are rotatable relative to each other about a main body-side connection shaft (35, 45) characterized in that the at least one drive arm (31, 41) includes a pair of first and second drive arms, the at least one connection link (36, 46) includes a pair of first and second connection links, and the at least one support shaft (33, 43) includes a pair of first and second support shafts, in a first drive link, the first support shaft is positioned on the first guide unit side and the first connection link is positioned on the second guide unit side, and in a second drive link, the second support shaft is positioned on the second guide unit side and the second connection link is positioned on the first guide unit side. at least one guide unit (21, 22) including a pair of first and second guide units (21, 22); a device main body that reciprocates along the guide unit (21, 22); and a drive mechanism that causes the device main body to reciprocate, wherein the drive mechanism includes at least one drive arm (31, 41) that has a base portion (31a, 41a) supported such that the drive arm (31, 41) is rotatable about at least one support shaft (33, 43), a rotation driver that rotates the drive arm (31, 41), and at least one connection link (36, 46) that connects a tip portion (31b, 41b) of the drive arm (31, 41) and the device main body, wherein the connection link (36, 46) and the drive arm (31, 41) are connected to each other such that the connection link (36, 46) and the drive arm (31, 41) are rotatable relative to each other about an arm-side connection shaft (34, 44), and wherein the connection link (36, 46) and the device main body are connected to each other such that the connection link (36, 46) and the device main body are rotatable relative to each other about a main body-side connection shaft (35, 45) characterized in that the at least one drive arm (31, 41) includes a pair of first and second drive arms, the at least one connection link (36, 46) includes a pair of first and second connection links, and the at least one support shaft (33, 43) includes a pair of first and second support shafts, in a first drive link, the first support shaft is positioned on the first guide unit side and the first connection link is positioned on the second guide unit side, and in a second drive link, the second support shaft is positioned on the second guide unit side and the second connection link is positioned on the first guide unit side.