A light guide comprising: a body transmittable to light, with the body including a first end face on an end thereof, with the body further including a light emitting portion, a deflecting portion, and two lateral sides (14, 15), with the light emitting portion and the deflecting portion opposite to each other, with each of the two lateral sides (14, 15) connected to the light emitting portion and the deflecting portion, with the first end face connected to the deflecting portion and each of the two lateral sides (14, 15); and a plurality of light guiding elements, with the plurality of light guiding elements arranged on the deflecting portion, wherein each of the plurality of light guiding elements includes a curved face, with the curved face being a conical surface or a part of the conical surface, and with the curved face coupled to the deflecting portion, characterized in that the plurality of light guiding elements is arranged on the deflecting portion in a single row between and spaced from the two lateral sides (14, 15), with a cross section of the body extending perpendicular to the single row extending through no more than one of the plurality of light guiding elements; wherein the curved face of each of the plurality of light guiding elements is directly facing the two lateral sides (14, 15); and wherein the curved face includes a portion connected to the deflecting portion, with the portion of the curved face extending along the deflecting portion and forming a bottom face, with the deflecting portion having a width between the two lateral sides (14, 15), with the bottom face of each of the plurality of light guiding elements having a bottom face width in a direction perpendicular to the two lateral sides (14, 15), with the bottom face width being smaller than the width of the deflecting portion, wherein said configuration allows a light ray to be transmitted between each light guiding element and the two lateral sides (14, 15); wherein the plurality of light guiding elements including first, second and third light guiding elements (2a, 2b, 2c) disposed in sequence, wherein the two lateral sides (14, 15) and the first, second and third light guiding elements (2a, 2b, 2c) are configured with one of the two lateral sides (14, 15) deflecting at least a portion of a light ray hitting the curved face of the first light guiding element to hit the second light guiding element or the third light guiding element, and with the second light guiding element or the third light guiding element reflecting the deflected portion of the light ray to emit through the light emitting portion. a body transmittable to light, with the body including a first end face on an end thereof, with the body further including a light emitting portion, a deflecting portion, and two lateral sides (14, 15), with the light emitting portion and the deflecting portion opposite to each other, with each of the two lateral sides (14, 15) connected to the light emitting portion and the deflecting portion, with the first end face connected to the deflecting portion and each of the two lateral sides (14, 15); and a plurality of light guiding elements, with the plurality of light guiding elements arranged on the deflecting portion, wherein each of the plurality of light guiding elements includes a curved face, with the curved face being a conical surface or a part of the conical surface, and with the curved face coupled to the deflecting portion, characterized in that the plurality of light guiding elements is arranged on the deflecting portion in a single row between and spaced from the two lateral sides (14, 15), with a cross section of the body extending perpendicular to the single row extending through no more than one of the plurality of light guiding elements; wherein the curved face of each of the plurality of light guiding elements is directly facing the two lateral sides (14, 15); and wherein the curved face includes a portion connected to the deflecting portion, with the portion of the curved face extending along the deflecting portion and forming a bottom face, with the deflecting portion having a width between the two lateral sides (14, 15), with the bottom face of each of the plurality of light guiding elements having a bottom face width in a direction perpendicular to the two lateral sides (14, 15), with the bottom face width being smaller than the width of the deflecting portion, wherein said configuration allows a light ray to be transmitted between each light guiding element and the two lateral sides (14, 15); wherein the plurality of light guiding elements including first, second and third light guiding elements (2a, 2b, 2c) disposed in sequence, wherein the two lateral sides (14, 15) and the first, second and third light guiding elements (2a, 2b, 2c) are configured with one of the two lateral sides (14, 15) deflecting at least a portion of a light ray hitting the curved face of the first light guiding element to hit the second light guiding element or the third light guiding element, and with the second light guiding element or the third light guiding element reflecting the deflected portion of the light ray to emit through the light emitting portion.