Interior light transmission LED lighting device of light box

Abstract

The invention discloses an interior light transmission LED lighting device of a light box. The device comprises a box body, an LED light source and an optical system; the box body is a hollow cavity, the periphery of the box body is provided with a lighttight containing groove, and the containing groove is communicated with the cavity; the LED light source is installed on the middle of one edge of the containing groove, and the LED light source is further connected with a heat dissipation element and a driving power source which are externally arranged on the surface of the containing groove. The optical system is composed of a first optical element arranged on one side, provided with the LED light source, of the containing groove, a second optical element arranged in the containing groove relative to the LED light source, third optical elements arranged in the containing groove on the two sides of the LED light source and fourth optical elements arranged in corners of the containing groove, and a reflective sheeting capable of adjusting light road is arranged on the middle of the lower end of the first optical element. The interior light transmission LED lighting device of the light box has the advantages that the lighting is uniform, the circuit connection is simple, maintenance is convenient, the normal service life of the light source is guaranteed, and energy conservation and environment protection are achieved.

Description

technical field [0001] The invention relates to the technical field of internal light-transmitting lighting equipment, in particular to an internal light-transmitting LED lighting device for an advertising light box with uniform illumination, energy saving and long life. Background technique [0002] Lighting or advertising light boxes mainly use the light source in the box to irradiate outward, so that the content on the display or advertising panel can be clearly displayed for the public in the dark, so as to play the role of guidance or publicity. [0003] Most of the traditional light boxes use a plurality of fluorescent tubes as the light source to illuminate the content on the panel. However, the number of light source units in this light box is large, which makes the circuit connection more complicated, and consumes more power, taking up more electricity. Resources and electricity cost are high, and when working, because the light source is enclosed in the box, the he...

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Problems solved by technology

[0003] Most of the traditional light boxes use a plurality of fluorescent tubes as the light source to illuminate the content on the panel. However, the number of light source units in this light box is large, which makes the circuit connection more complicated, and consumes more power, taking up more electricity. Resources and electricity cost are high, and when working, because the light source is enclosed in the box, the heat generated by the light source cannot be dissipated to the outside in time, which is easy to shorten the normal service life of the light source, and it is difficult to maintain. In addition, multiple units The light source is prone to light blind spots, so that when the public watches the content of the panel, there will be light and dark bands, which will affect the visual effect of viewing

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