Abstract: A refraction lens is integrally formed by transparent material including glass and acrylic. The refraction lens includes a body, wherein an incidence face and a light emitting face respectively formed on two opposite sides of the body. In the preferred embodiment, the body is a cylindrical structure, the incidence face is convex structure and the emitting face has at least one collecting unit formed thereon. The at least one collecting unit includes multiple collecting portions arranged in array, wherein each collecting portion is peripherally protruded from the emitting face. Each correcting portion is formed with a curved top for providing a dotted collecting effect.

Abstract: A backlight refraction lens includes a body formed with an incident face and an emergent face, wherein the incident face has a raised periphery and an axis formed with an angle with an axis of the body, the angle, between the axis of the incident face and the axis of the body, set between 35 degrees to 65 degrees such that the ray light going into the body along an incident angle within 15-45 degrees is mostly projected from the emergent face after being refracted. The backlight refraction lens promotes the visibility and identification of objects on the outdoor kanban board when the outdoor kanban board is in a backlight condition such that the conventional LEDs are unnecessary to the outdoor kanban board that has a series of backlight refraction lens in accordance with the present invention mounted thereon.

Abstract: A backlight refraction lens includes a body formed with an incident face and an emergent face, wherein the incident face has a raised periphery and an axis formed with an angle with an axis of the body, the angle, between the axis of the incident face and the axis of the body, set between 35 degrees to 65 degrees such that the ray light going into the body along an incident angle within 15-45 degrees is mostly projected from the emergent face after being refracted. The backlight refraction lens promotes the visibility and identification of objects on the outdoor kanban board when the outdoor kanban board is in a backlight condition such that the conventional LEDs are unnecessary to the outdoor kanban board that has a series of backlight refraction lens in accordance with the present invention mounted thereon.

Abstract: A marking board with back-focusing and brightness enhancement effect has a board body having a plate-type pattern to define a marking surface and a rear surface. Of which the marking surface is provided with a marking portion. Multiple through-holes are arranged at interval within the range of the marking portion on the marking surface of the board. Multiple light-focusing lenses are installed on the rear surface of the board body correspondingly to the through-holes. The light focusing lenses include a transparent protruding end, a light-focusing member and at least a positioning member. The sunlight or preset light source could be back-focused via said light-focusing lens, and transmitted via the marking surface, so as to enhance the brightness, promote the identification effect of the marking portion and significantly reduce the cost with better applicability and industrial and economic benefits.

Abstract: An LED lighting device with backup switching function has a device main body, configured with at least one LED fitting part and one power supply part. At least one LED component is configured on the LED fitting part and has a main lighting circuit. A backup lighting circuit is fitted inside the same LED component as the main lighting circuit or inside a different LED component. A backup switching processor is electrically connected to and fitted between the main lighting circuit and backup lighting circuit and is connected to the power supply. Based on the automatic detection function of the backup switching processor, in case of short circuit or broken circuit of the main lighting circuit, the switching processor will automatically switch to the backup lighting circuit and maintain continuous lighting of the LED component, and consequently increase the lifecycle of the LED component and reduce repair frequency and cost.