Abstract: An emergency light device includes a housing having an upper flange, a barrel having a peripheral rib engaged with the flange for latching the barrel to the housing and having a partition for forming two compartments, a plate disposed in the upper compartment and secured to the barrel and having a number of light members, a circuit board disposed in the lower compartment of the barrel and secured to the barrel and having a control circuit for controlling the light members, and a battery for energizing the light members, the circuit board and the plate may be solidly secured to the partition of the barrel, and the barrel may be quickly attached to the housing and to a hood, and the light device may be used as a flashlight or a hand-held light, and a night light.