Another structure type of LED panel light is from the side light guide advertising use light guide box evolved, because the use of LED compared to the fluorescent tube or CCFL tube thinner, more lightweight features, the product structure can be very thin. Throughout the development of LED panel lights, most enterprises are this as the entry point, one of the Hong Kong listed companies from 2005 to invest in considerable advertising, apparently LED panel lights have been more and more attention from the industry. Some people believe that the LED panel light industry should not blindly pursue ultra-thin LED panel lights. First of all, the structure of LED light is from the side of the light guide plate through the light guide plate, reflection dot, reflection plate and other reflection and refraction, in the front of the light, although the problem of glare is solved, but its light efficiency will be in each path of its light conduction will have a corresponding degree of loss, therefore, the LED panel lamp sales in so many years is not imagined so much, I think the main reason is that it is not good to use, the price is on the high side, and the actual illumination is not enough. In addition, some customers because of the blind pursuit of ultra-thin LED panel lamp, the desire to replace the traditional office ceiling grille lamp with its advantages, but did not think that there is enough space for the ceiling at this time, its ultra-thin characteristics can not be reflected, the light efficiency is low, resulting in its light efficiency can not reach the traditional fluorescent lamp grille lamp illuminance, Will affect the end user's evaluation of LED lighting industry.
