Patent ID: 8070307

Claim:
A light-emitting warning device of a safety helmet, comprising: a helmet main body, an annular locating groove and a receiving cavity being formed on an outer face of the helmet main body, the locating groove having two end sections in communication with or adjacent to the receiving cavity; a light guide element, which is an elongated flexible strip body with light guiding property, the light guide element being received in the locating groove, two end sections of the light guide element extending into the receiving cavity, the light guide element being at least partially exposed to outer side of the locating groove; and a light source control mechanism having at least one internal light source body and at least one control switch, by means of the control switch, a state of electric connection between the light source body and a power source being variable, whereby when the light source body is turned on, the light source body projects light into the end sections of the light guide element that extend into the receiving cavity, wherein the receiving cavity communicates with the locating groove via at least one through hole formed in the helmet main body such that the through hole extends from the receiving cavity to the locating groove, and the through hole is formed in a middle section of the locating groove in communication with an interior of the helmet main body.