The present invention is intended to fix a rod lens to a casing and not only prevent looseness thereof but also facilitate an assembling work, and includes: a casing 2 having a bottom wall part 21 and a pair of side wall parts 22, 23 extending upward from this bottom wall part 21; a rod-shaped lens 4 provided above an LED substrate 3 and along a longitudinal direction inside the casing 2; and a fixing mechanism 5 for fixing the lens 4 to the pair of side wall parts 22, 23, wherein the fixing mechanism 5 includes: an upward surface 51a provided along the longitudinal direction in an inner surface of the side wall parts 22, 23; a downward surface 52a provided along the longitudinal direction in a side peripheral surface of the lens 4; a concave groove 53 provided along the longitudinal direction above the upward surface 51a in the inner surface of each of the side wall parts 22, 23; and an elastic body 54 fitting into the concave groove 53 to be in contact with the side peripheral surface of the lens 4 in a state that the downward surface 52a is in contact with the upward surface 51a.
F21V 17/16 - Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening by deformation of parts of the lighting device; Snap action mounting
F21S 4/28 - Lighting devices or systems using a string or strip of light sources with light sources held by or within elongate supports rigid, e.g. LED bars
F21V 5/04 - Refractors for light sources of lens shape
F21V 8/00 - Use of light guides, e.g. fibre optic devices, in lighting devices or systems
F21K 99/00 - Subject matter not provided for in other groups of this subclass