Why are the fuse blown out in the cigarette lighter?

The fuse in a cigarette lighter may blow due to several reasons, primarily caused by an overload of electrical current. This can happen if a device with too high a wattage is plugged into the lighter, or if there's a short circuit within the lighter or the wiring. Additionally, corrosion or damage to the lighter socket can also lead to increased resistance and result in a blown fuse. Regular maintenance and using appropriate devices can help prevent this issue.