Lock with key storage room

A lock assembly comprising:

• a box having a first part and a second part which is pivotably mounted to the first part to define a room between the first and second parts;
• a number wheel unit connected to the first part or the second part, the number wheel unit including multiple number wheels which are partially extending through slots defined through a wall of the first part or the second part, each number wheel being semi-transparent wheel, a resilient member located on one side of the number wheel unit;
• a shackle unit connected to one of the first and second parts that is not connected with the number wheel unit, the shackle unit including a locking member and a U-shaped shackle which includes a first end and a second end, the first end of the U-shaped shackle pivotably connected to the one of the first and second parts that is not connected with the number wheel unit, the second end of the U-shaped shackle detachably engaged with the locking member, the locking member being shifted to release the second end of the U-shaped shackle from the locking member, an engaging member connected to the one of the first and second parts that is not connected with the number wheel unit, the engaging member engaged with the resilient member when the first and second parts are mounted to each other, and
• a light-emitting unit located beside the number wheel unit and located within the room, the light-emitting unit including a transparent cover, a power source and a light-emitting member, the power source accommodated in the transparent cover, the light-emitting member connected to transparent cover and located corresponding to the number wheel unit, the light-emitting member electrically connected to the power source so as to illuminate the number wheels and the room.