The technical problem of LED as the lighting source of the ship the LED light must be composed of a luminaire, an optical component, a structural shell, etc. The ship equipment is in the environment of large voltage fluctuation range, electromagnetic interference, vibration, shock, salt mist, high temperature and humidity, oil mist and mould, and puts forward higher requirements for the reliability and maintainability of the work of marine lighting equipment.
The use of the environment is far higher than the general general lighting environment, so the marine LED lamps and lanterns are different from the general lighting products, the use of the marine environment for the development of ships dedicated LED lighting, and need to solve the following technical problems:
(1) through optical design to solve the problem of marine led light. Led belongs to point Light source, if direct exposure to the eye, will feel dazzling, people uncomfortable, so the lighting must be special treatment to achieve a soft, not dazzling effect.
(2) to solve the problem of heat dissipation. LED is a power device, affected by the current and temperature, power, the high temperature produced by the chip will lead to a sharp decline in LED light-emitting efficiency, electrode damage, accelerated aging of epoxy resin, light decay fast, and even the end of life.
Therefore, to improve the cooling capacity is to ensure that led life is the most critical issue. Lighting to pass a reasonable cooling design, to ensure that the LED heat can be quickly passed out, only the LED node temperature of less than 105 ℃ to ensure the life of the light source. In order to ensure reliable use in the voltage fluctuation environment, we must follow the design standard of switching power supply, design open circuit and short-circuit protection, over temperature protection, overload protection, constant current output, and have thunder and anti surge design (which can effectively prevent lightning strikes above 4kv), For power 50WLED drives to increase the soft start
(3) to solve the salt spray corrosion problem. LED light source silicon wafer Although the epoxy resin closed, but the LED pad is still exposed, welding parts in the salt mist corrosion prone to failure, resulting in LED failure. Can be solved by two methods: ① to improve the product’s shell protection level, to ensure that there is no water vapor inside the lamp, ② selection of LED products with salt spray characteristics
(4) to solve the blue light hazard problem. Wholesale solar marine lighting can get white light to be used for illumination. At present, the most common way to get white light is to use the blue LED chip to stimulate fluorescent powder, LED radiation blue, blue and is divided into two parts, a part of the blue light-emitting phosphor emitting yellow-green light, the other part of the fluorescence projection and the resulting yellow-green light mixed with white light. This property determines that there must be a blue light in the LEDs emitted. But blue light can damage people’s retinas.