Ultra-thin advertising lamp box with LED (light emitting diode) as light source
A technology of advertising light boxes and LED light strips, which is applied in the field of advertising light boxes, can solve the problems of uneven illumination of ultra-thin advertising light boxes, complicated installation of low-power LED light sources, etc., and achieve the effect of ensuring uniformity
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[0039] The present invention changes the light distribution (that is, the spatial distribution of light intensity) of the LED light source by using a light distribution lens on the LED point light source, so that light source points that are far apart can achieve uniform illumination at a shorter vertical lighting distance.
[0040] The ultra-thin advertising light box of the present invention includes a light box body, a canvas positioned at the front end of the light box body, and an LED dot matrix composed of LED single lights behind the canvas. The distance between adjacent LED single lights in the LED dot matrix is greater than 10 cm and each An LED single lamp is provided with a luminous body and a light distribution lens installed on the luminous body. The light distribution lens enables the LED single light to meet the following requirements: when the light intensity on the canvas is half of the peak value, the W / T value is greater than 1, where W is the distance betw...
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