Lighting alarm device of safety helmet

Abstract

The invention relates to a lighting alarm device of a safety helmet, mainly comprising a helmet body, an elongated flexible light guide assembly, a light source and a control mechanism, wherein the peripheral side of a shell of the helmet body is annularly provided with a positioning groove and a containing recess, and two end parts of the positioning groove are respectively communicated with the containing recess; the elongated flexible light guide assembly has a light guide characteristic, and two end parts of the elongated flexible light guide assembly respectively extend into the containing recess to combine with the light source and the control mechanism; and the sides of the light source and the control mechanism are provided with light ray projecting holes so that light rays can be guided into the elongated flexible light guide assembly. A light ring covering a large area can be formed on the periphery of the shell to enhance integral lighting alarm effect through the uniform light guide characteristic of the light guide assembly; the positioning groove into which the light guide assembly is embedded is at least partially provided with a through hole, and the light guide assembly can penetrate through the shell through the through hole so as to stabilize and position the light guide assembly and prevent the light guide assembly from desquamating and further enhance the outwards convex degree of the light guide assembly to enlarge light diffusion area.

Description

technical field [0001] The invention relates to a luminous warning device for a safety helmet, in particular to a luminous warning device for a safety helmet with stable combination and positioning, good luminous efficiency and improved warning effect. Background technique [0002] There is a structure in which a warning strip is nested around the periphery of the helmet shell, please refer to Figure 1, the warning strip 5 is a flexible transparent strip body 50, and a number of evenly distributed warning lights 51 are placed in it. , and each warning light 51 can be operated by a control circuit to light up and flash on the periphery of the helmet shell, thereby providing a luminous warning effect in the dark; however, this warning strip 5 with several warning lights (or LEDs) 51 structure, because it needs to include many warning lights 51, not only the cost is relatively expensive, but also consumes relatively high power energy during use, the frequency of battery replace...

AI Technical Summary

Problems solved by technology

[0002] There is a structure in which a warning strip is nested around the periphery of the helmet shell, please refer to Figure 1, the warning strip 5 is a flexible transparent strip body 50, and a number of evenly distributed warning lights 51 are placed in it. , and each warning light 51 can be operated by a control circuit to light up and flash on the periphery of the helmet shell, thereby providing a luminous warning effect in the dark; however, this warning strip 5 with several warning lights (or LEDs) 51 structure, because it needs to include many warning lights 51, not only the cost is relatively expensive, but also consumes relatively high power energy during use, the frequency of battery replacement is relatively high, and its overall weight is relatively heavy, and the burden of wearing is relatively large. It is inconvenient and not in line with economic benefits; moreover, because the warning light 51 for light-emitting has the directionality of illumination, if the number of lights used is too small, the overall light display range may be reduced or insufficient or not obvious, so In order to ensure sufficient number of warning lights and sufficient installation space for each warning light, it is necessary to remove the structure of a large space area on the body of the helmet, which directly affects the structural strength of the helmet. There are problems in implementation, and it directly affects Its safety in use is not yet an ideal design

[0003] Another traditional structure disclosed in Fig. 2 is to open a groove 61 on the edge of the inner helmet 6 of the safety helmet, and place a light guide strip 62 and LED 63 in the groove 61, and the inner helmet 6 is placed in the An upper cover 64 and a lower cover 65 are combined on the outer side, and the light guide strip 62 can be fixed by using the upper and lower covers (64, 65) respectively extending into the groove 61 with one edge. A groove 66 is used for accommodating a battery pack 67, and a control circuit device 68 with a switch is fixed between the inner helmet 6 and the lower cover 65, and the control circuit device 68 drives the LED 63 to emit light by means of the switch, and uses the guide The light strip 62 guides the light to the periphery of the helmet. Although this structure can effectively reduce energy consumption, the internal surface of the groove 61 where the light guide strip 62 is embedded has an extremely low reflectivity to light, and the upper and lower covers (64, 65) edge spacing and matching conditions between the grooves 61 to insert the light guide strip 62, not only the assembly method is extremely difficult, resulting in increased manufacturing costs, affecting the competitiveness of the product, but also the light guide strip 62 If it is not properly combined in the groove 61, it is easy to fall off during use. In light cases, the structure of the light guide strip 62 is damaged. In severe cases, when it falls off, it is more likely that the bullet hits the knight's face or outlines the neck, causing injury. and dangerous phenomena; therefore, in order to prevent the light guide strip 62 from falling off, the opening width of the groove 61 is generally set to be smaller than the diameter of the light guide strip 62, so that it can be embedded in the groove 61, but such The measures will inevitably reduce the visible area of ​​the light guide strip 62, seriously affecting the external light intensity and scattering area of ​​the light guide strip 62, which is not ideal in design; The connecting part with the control circuit device is also exposed, which is easy for external moisture and dust to infiltrate, making the light guide strip 62 easy to be damp and affecting its light diffusion effect, resulting in a lack of application

[0004] Another example is the structure disclosed in U.S. Patent No. 6,007,213, in which a recessed channel is provided on the outer surface of an inner shell, and a fiber optic cable (recessed channel) can be accommodated in the recessed channel. optical cable), and the two ends of the optical fiber cable can be connected to a light source (light source) through a connector (connector), and the light source can be connected to a power source (power source) through a switch (switch), and in The outer side of the inner shell can be combined and covered with an outer shell, and a transparent area (transparent area) corresponding to the extension position of the optical fiber cable is provided on the outer shell, so that the light generated by the light source can pass through the optical fiber cable. The wire is guided outwards and radiated outwards through the transparent area on the shell; although this structure can form protection on the outer surface of the optical fiber cable and related components through the shell to improve the service life and reliability of the overall structure, However, in actual development and production, since the slotting channel is located on the inner shell and the transparent area is located on the outer shell, the two (inner and outer shell) must be produced with excellent precision, otherwise if there is ( If the positions of the inlay channel and the transparent area do not match, it will affect the degree of bonding between the inner shell, the outer shell and the optical fiber cable, which may easily cause defective products. In addition, the transparent area forms a light barrier outside the optical fiber cable. If the transparency is not good Or errors in assembly accuracy will affect the external scattering effect of the light of the optical fiber cable. As a result, the production cost will inevitably increase, and the defective rate of the product will also increase with the difficulty of processing. Further improvements should be made. necessary

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