LED light-emitting lamp box

Abstract

The invention discloses an LED light-emitting lamp box which comprises an aluminum alloy profile, aluminum alloy crosspieces, an aluminum alloy plate, a lamp panel, a transformer, a printing canvas, light uniformizing cloth and light leakage preventing cloth. The aluminum alloy section bar is formed by fixedly connecting first aluminum alloy profile and second aluminum alloy profiles, one side ofthe top of each second aluminum alloy profile is connected with the corresponding first aluminum alloy profile, and a first fixing platform is arranged on the other side of each second aluminum alloyprofile. Second fixing platforms are arranged at the tops of the aluminum alloy crosspieces, fixing clamping grooves are formed in the first fixing platforms and the second fixing platforms, and a plurality of aluminum alloy crosspieces are arranged between the two second aluminum alloy profiles. The lamp panel is fixedly connected to the top of the first fixing platforms and the top of the secondfixing platforms through screws and the fixing clamping grooves. The transformer is installed on the side, facing the aluminum alloy crosspieces, of the lamp panel. Corner brace fixing positions fixedly connected with the aluminum alloy plate are arranged at the two ends, away from each other, of the first aluminum alloy profiles.

Description

technical field [0001] The invention relates to the field of LED light-emitting light boxes, in particular to an LED light-emitting light box. Background technique [0002] At present, the structure of the existing LED light box is mainly assembled from four parts: the backboard, the light source, the canvas, and the profiles. The backboard is a flat rectangular plate made of PVC material, which is mainly used to fix the light source; A kind of LED light strip is mostly used, which is long and hard; the canvas is a square textile fabric, which can be printed with some patterns for decoration; the profile is an aluminum strip with a cross-sectional shape and size, which is used as an outer frame for Fixed backplane, fixed canvas; [0003] However, the existing LED luminous light box has the following three shortcomings: [0004] Safety: The power supply, circuit and light source are placed in the same internal space, there are safety hazards such as short circuit and high t...

AI Technical Summary

Problems solved by technology

[0004] Safety: The power supply, circuit and light source are placed in the same internal space, there are safety hazards such as short circuit and high temperature causing fire, and the flame retardant level of the PVC backboard installed with LED light strips is low;

[0005] Lifespan: several heating main parts (power supply, wire, light source, etc.) Working in the environment, the life will be shortened accordingly, and the life will be halved for every 10 degrees higher than the zero point (50 degrees);

[0006] Effect: When the traditional light bar is made in the light box, after it is installed on the back panel, the distance between the lamp and the lamp is controlled manually, resulting in a large error in the distance between the lamp and the lamp, which affects the uniformity of the canvas light source (such as fishbone pattern , light spots, shadows, etc.); light strips, wires, and power sources on the surface of the backplane directly affect the second, third... reflections inside the light box, thereby affecting the brightness of the canvas light source (such as shadows, dark areas, etc.); There are few options for the length and size of the light bar, and the span of the light distance is large, which cannot meet the application requirements of all sizes of light boxes and uniform performance; the light source is directly on the canvas, so only thicker canvas can be selected (otherwise it will leak light), and the thick canvas has poor light transmission and particles. Thickness and other shortcomings affect the performance of the picture; the wires of the traditional light box are arranged irregularly, if a wire inside the light box is short-circuited or damaged, it will cause a large area of ​​the light box to be unlit

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