Light-emitting diode (LED) light engine module

Abstract

The invention relates to a light-emitting diode (LED) light engine module which comprises an LED module light source (1), a secondary optical lens (2), a radiator (3) and a power supply (4). The LED module light source (1) comprises a substrate (1.5), a plurality of LED chips (1.1) are welded on the substrate (1.5), a box dam (1.2) is further arranged on the substrate (1.5), the LED chips (1.1) are all located in the middle of the box dam (1.2), the secondary optical lens (2) is covered on the LED chips (1.1), the substrate (1.5) of the LED module light source (1) is fixed on the top portion of the radiator (3), a silica gel pad sheet (3.1) is arranged between the LED module light source (1) and the substrate (1.5), and the power supply (4) is fixed on the lateral wall of the radiator (3), and the power supply (4) is electrically connected with a printed wire on the substrate (1.5). The LED light engine module is high in lighting effect, and easy to assemble and maintain.

Description

technical field [0001] The invention relates to an LED light engine module, which belongs to the technical field of lighting. Background technique [0002] Light-emitting diodes (Light Emitting Diodes, LED) have significant advantages such as energy saving, environmental protection, and long life, and are widely used in road lighting, indoor lighting, special lighting and other fields. At present, my country's lighting electricity consumption accounts for 12% of the country's total electricity consumption, while about 81% of my country's electricity is still thermal power generation, which consumes a lot of raw coal, and at the same time produces a large amount of harmful gas emissions such as smoke, CO2, SO2, etc., which is extremely serious for environmental pollution. . Among them, the main source of electricity for lighting is urban road lighting. With the further maturity of LED technology and the continuous decline in cost, it has gradually become a new energy-saving t...

AI Technical Summary

Problems solved by technology

Among them, the "multi-dot matrix" LED street light structure adopts the structural method of "radiator + multiple independent 1-3W LED light sources connected in series and parallel + PC / PMMA lens + dust-proof glass cover + driving power supply", which has many defects : ①Multiple independent LED light sources are connected in series and parallel, and the failure of a single LED light source will easily cause the failure of the entire LED lamp; ②The PC / PMMA lens has low light transmittance and poor UV resistance, so it cannot be directly exposed to the air, and a protective glass cover is required; ③Anti- The dust glass cover is fragile and the light transmittance is low; these defects lead to the generally low efficacy of LED street lighting with this structure (the overall lighting efficacy is about 70-80lm / W), and it is difficult to maintain and other obvious defects

Another "modular" LED street light structure adopts the structure of "radiator + several high-power LED module integrated light sources (50W, 80W, 100W and other module integrated light sources) + glass lens". Defect: Whether it is 50W, 80W, 100W LED module integrated light source, 50, 80, 100 LED chips are concentrated in one bracket, connected by gold wire, the gold wire is easy to break, and the high-power LED module emits light. Concentrated heat and unsatisfactory heat dissipation results in serious LED street lighting degradation, and the service life is far less than the nominal 30,000 hours, and it is also difficult to maintain due to the low integration of each component

Therefore, the current two mainstream technical directions of LED street lamps have the defects of low light efficiency, short life, complicated production process and difficult maintenance in the later stage.

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