Abstract: A barrel adjustment and retaining assembly includes a barrel body having an end surface, a seat body having a protrusion, a limiting component and an adjustment barrel. The seat body is movable relative to the barrel body. The protrusion is moved toward the end surface when the seat body moves from a pre-assembly position to an assembly position. The limiting component is clamped between the protrusion and the end surface to deform such that an outer diameter of the limiting component is increased when the seat body moves from the pre-assembly position to the assembly position. The adjustment barrel is sleeved slidably on the barrel body. The clamped limiting component is confined within a hole portion of the adjustment barrel.

Abstract: A lamp with light guide lens for lateral includes a body, a light-emitting element, a light guide lens and a movable housing which are disposed on the body. When the movable housing moves until the light guide lens is located within the hole of a reflection cup of the movable housing, the lateral light from the light guide lens will be reflected by the reflection cup and emitted out of the front light-passing portion, when the movable housing moves until the light guide lens is not within the hole, and the lateral light-passing portion extends out of the body, the lateral light from the light guide lens will be emitted out of the lateral light-passing portion.

Abstract: A barrel adjustment and retaining assembly includes a barrel body having an end surface, a seat body having a protrusion, a limiting component and an adjustment barrel. The seat body is movable relative to the barrel body. The protrusion is moved toward the end surface when the seat body moves from a pre-assembly position to an assembly position. The limiting component is clamped between the protrusion and the end surface to deform such that an outer diameter of the limiting component is increased when the seat body moves from the pre-assembly position to the assembly position. The adjustment barrel is sleeved slidably on the barrel body. The clamped limiting component is confined within a hole portion of the adjustment barrel.

Abstract: A lamp with lateral capability is provided with a body and a movable housing movably disposed on the body. A light emitting element disposed in the body cooperates with a light guide lens to emit lateral light. Light is allowed to be collectively emitted from the front light-passing portion of the movable housing in a forward emission manner by moving the movable housing to a position where the light guide lens is located within the movable housing, or the light can be emitted from the lateral light-passing portion in lateral emission manner by moving the movable housing to a position where the light guide lens is not located within the movable housing.