| 摘要 |
PURPOSE:To elongate the distance of projection by fitting the infrared ray light emitting diode of an emitter into a package, directing it frontward. CONSTITUTION:A through hole for passing a power cable 2 is opened in the proper place of a package 1. Moreover, a plurality of infrared ray light emitting diodes 5 are arranged on the surface of a board 4, which is of a disc shape so as to be fit in the package 1, and the infrared ray light emitting diodes 5 are wired on the rear. A plurality of infrared ray light emitting diodes 5 are wired in series to form a set of light emitting array, and plural sets of arrays are wired in parallel. Each light emitting array is provided with a resistor, and an emitter 6, whose power cord 2 is distributed on the other side of the board 4, is installed inside the package, so that the side of infrared ray light emitting diodes may be frontward, from the side of opening of the package 1. Then, the emitter 6 and the package 1 are fixed to each other by setting resin material 7 or the like, which has waterproof property, between the emitter 6 and the armor case 1. |
