High lighting-effect low power-consumption light-emitting diode (LED) area light source initiative-passive light-emitting alarm device

Abstract

The invention relates to a high lighting-effect low power-consumption light-emitting diode (LED) area light source initiative-passive light-emitting alarm device, which comprises an alarm device body, wherein outer frames are respectively arranged on the periphery of the alarm device body, a clamping groove is formed among the four outer frames, a baseboard is arranged at the bottom end of the clamping groove, a light-emitting device is connected onto the baseboard, and a bag is wrapped on the periphery of the light-emitting device. The light-emitting device comprises a light guiding plate, a strip-shaped circuit board is formed on at least one side of the periphery of the light guiding plate, and a plurality of LEDs are evenly distributed on the strip-shaped circuit board. A first reverse-reflection optical film is bonded at the top end of the light guiding board, a bottom layer high reflection ratio optical film is arranged at the bottom end of the light guiding board, an alarm label formed by a second reverse-reflection optical film is bonded on the top surface of the bottom layer high reflection ratio optical film, and the strip-shaped circuit board is connected with an external power source adapter through leads. The high lighting-effect low power-consumption LED area light source driving and driven light-emitting alarm device has the advantages of being capable of not only initiatively emitting light and displaying alarm information clearly, but also passively emitting light by reflecting lights of an external power source in return mode and displaying alarm information clearly.

Description

technical field [0001] The invention relates to a warning device, in particular to an active and passive light-emitting warning device of an LED surface light source with high light efficiency and low power consumption. Background technique [0002] As a kind of safety facility, warning signs mainly remind people of matters that should be paid attention to in the form of patterns or words. At present, the warning signs that are commonly used and used mainly include: ordinary signs (non-luminous, non-reflective), reflective signs (reflective but not luminous), luminous signs (luminous but not reflective), and a small amount of LED light-emitting diodes installed on the surface of reflective signs glowing reflective sign. in: [0003] Ordinary signs can only be used during the day or in environments with very good lighting conditions because they can neither emit light nor reflect light. [0004] Reflective signs are generally engraved or printed with retro-reflective opti...

AI Technical Summary

Problems solved by technology

This technology is largely affected by the size, structure, pattern or text complexity of the reflective signboard. When the signboard is large or the pattern and text are more complicated, a large number of LEDs are needed to outline the pattern or text. Not to mention fill patterns or text

Therefore, the patterns or characters displayed by this technology are generally monotonous and abstract, and there are also problems of high power consumption, black spots and black spots when individual LEDs are damaged, which will affect the integrity and visibility of the entire pattern or characters. question

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