Patent attributes
An onboard power supply device includes capacitors, a holder holding the capacitors, a mounting board having the capacitors mounted thereon and having the holder fixed thereto, and a heat-generating component mounted on the mounting board. Each of the capacitors includes a capacitor body and a lead terminal extending from the capacitor body. The holder includes a base part, first holding parts bundled by the base part and holding the capacitors, second holding parts each connected to a corresponding one of the first holding parts, and a fixing part extending from an outer edge of the base part toward the mounting board and fixed to the mounting board. The capacitor body of each of the capacitors is held by a corresponding one of the first holding parts. The lead terminal of each of the capacitors is held by a corresponding one of the second holding parts. The mounting board has a through-hole therein through which the lead terminal passes. The through-hole is connected to the lead terminal. The corresponding one of the second holding parts has a holding through-hole therein extending along a through-axis coinciding with the through-hole. An inner wall of the holding through-hole contacts the lead terminal. This onboard power supply device has a small size.
