Abstract: A dustproof lens for an LED road lamp has an incident surface and an exit surface. The exit surface is flat. The incident surface is saddle-shaped and has a section in a shape of a concave curve along a road direction and in a shape of a convex curve vertically to the road direction. A lens module thereof has the dustproof lenses jointed with each other and has an integrally flat exit plane. The dustproof lens and its module, while meeting requirements in distributing lights for road lighting, adopt a flat surface for emitting lights, in such a manner that the lens is protected from dusts piled up thereon, can be cleaned simply, and is better fit for using. By accomplishing modularization of the lens module in production and assembly, a productive efficiency of lamps is greatly improved.

Abstract: A dustproof lens for an LED road lamp has an incident surface and an exit surface. The exit surface is flat. The incident surface is saddle-shaped and has a section in a shape of a concave curve along a road direction and in a shape of a convex curve vertically to the road direction. A lens module thereof has the dustproof lenses jointed with each other and has an integrally flat exit plane. The dustproof lens and its module, while meeting requirements in distributing lights for road lighting, adopt a flat surface for emitting lights, in such a manner that the lens is protected from dusts piled up thereon, can be cleaned simply, and is better fit for using. By accomplishing modularization of the lens module in production and assembly, a productive efficiency of lamps is greatly improved.

Abstract: A luminous sign using encapsulated LED chips with a neon light effect, comprising: a light guide, the front shape of which is the shape of a character with a selected width and height; an illumination channel, the shape of which is matched the shape of the light guide, the illumination channel and the light guide integrated into one piece; at least one PCB, the shape of which is matched the shape of the illumination channel, being placed underneath the illumination channel; a plurality of LED chips being spacedly disposed as a linear or strip array on the PCB by chip bonding method; the light guide, the illumination channel and the PCB form a closed light cavity, encapsulated with encapsulant doped with diffusion diluent; the encapsulated light guide, illumination channel and PCB are mounted on a supporting frame to form a character shape.