Abstract: A light assembly as used with street construction barricades is disclosed. In one embodiment, there is a base having a supporting platform with recesses in its upper surface, the recesses having a bottom, side walls and an open top. The recesses also have access holes in a recess side wall leading into the recesses from the exterior. A removable casing fits over the base to form a housing therewith. The casing has an interior cavity with side walls and a top extending above the recesses. A coupling connects the base to the casing upon substantially lateral movement of the base under the cavity. This restricts the vertical movement of the base relative to the casing. Batteries are insertable in the casing cavity so as to recede into the recesses upon assembly of the casing and base. The batteries will then block disassembly by limiting lateral movement of the casing relative to the base. A special tool is insertable in the access holes to push the batteries out of the recesses so as to allow disassembly.

Abstract: A light assembly as used with street construction barricades is disclosed. In one embodiment, there is a base having a supporting platform with recesses in its upper surface, the recesses having a bottom, side walls and an open top. The recesses also have access holes in the bottom leading into the recesses from the exterior. A removable casing fits over the base to form a housing therewith. The casing has an interior cavity with side walls and a top extending above the recesses. A coupling connects the base to the casing upon substantially lateral movement of the base under the cavity. This restricts the vertical movement of the base relative to the casing. Batteries are insertable in the casing cavity so as to recede into the recesses upon assembly of the casing and base. The batteries will then block disassembly by limiting lateral movement of the casing relative to the base. A special tool is insertable in the access holes to push the batteries out of the recesses so as to allow disassembly.

Abstract: A warning light housing includes a casing having an aperture which aligns with a chamber in the base to present a receptacle for receiving a plug-type lock. With the lock residing within the receptacle, separation of the base and casing is prohibited thus preventing access to the housing interior. The lock includes a latch element which is selectively movable between locking and non-locking positions by turning a key within the lock. In its locking position, the latch element extends radially outwardly from the lock periphery into a slot in the housing base to restrain the lock within the receptacle; and, in its non-locking position, the latch element lies within the lock periphery allowing removal of the lock from the receptacle.