LED (Light Emitting Diode) advertising display screen

Abstract

The invention provides an LED (Light Emitting Diode) advertising display screen. The LED advertising display screen comprises a screen body, a surface cover, a light transmitting cover, an LED light source assembly and a heat dissipation plate; the surface cover is formed by transparent glass or transparent resin; one side of the surface cover is flexibly connected with the screen body; the other side of the surface cover is connected with a lamp housing through a fastener cam lock or a lock catch; the light transmitting cover and the lamp housing form a light source chamber; the LED light source assembly is arranged in the light source chamber; the LED light source assembly comprises a substrate and a plurality of LED light sources which are fixed on the substrate; the substrate is fixed on one side of the heat dissipation plate; heat dissipation burrs are welded on the other side of the heat dissipation plate; every heat dissipation burr is in a conical shape; the diameter of the cross section of every heat dissipation burr is gradually reduced from the welding end to the other end; the heat dissipation plate and the lamp housing form a heat dissipation chamber; the heat dissipation burrs are arranged in the heat dissipation chamber. According to the LED advertising display screen, every heat dissipation burr is in a conical shape and accordingly the heat dissipation area is increased, meanwhile the ventilation performance of the heat dissipation plate is improved, the heat dissipation effect is improved, and accordingly the service life of the display screen is effectively extended and the cost is low.

Description

technical field [0001] The invention relates to an LED advertisement display screen. Background technique [0002] LED has the characteristics of environmental protection and pollution-free, low power consumption, high luminous efficiency, long life, etc. Therefore, LED will become the best choice for energy-saving renovation. The difference between LED and conventional lamps is that the LED light source adopts low-voltage DC power supply and high-efficiency white light synthesized by GaN-based power blue LED and yellow, which has unique features such as high efficiency, safety, energy saving, environmental protection, long life, fast response speed, and high color rendering index. advantage. The outer cover can be made, high temperature resistance up to 135 degrees, low temperature resistance up to -45 degrees. [0003] When the advertising display screen is used, the heat generated by the light source needs to be well dissipated to make the advertising display screen...

AI Technical Summary

Problems solved by technology

[0003] When the advertising display screen is used, the heat generated by the light source needs to be well dissipated to make the advertising display screen have a longer service life. The heat dissipation plate in the lighting fixture of the existing advertising display screen adopts a plate shape or a sheet shape , the ventilation of this heat sink is relatively insufficient, which affects the heat dissipation of the heat sink

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