LED illuminating apparatus and a radiating structure thereof

Abstract

The invention provides an LED illuminating apparatus and a radiating structure thereof. The LED illuminating apparatus comprises a protective cover plate, an LED light emitting module composed of an LED base plate and LED particles, and light-transmission plates which are combined to form a lamp and connected with a power supply. The light-transmission plates and the protective cover plate form a box structure, the LED base plate is fixedly arranged in the middle, and each 3-10 particles of the LED particles are connected in series to form a group of LEDs which are welded on the LED base plate. A light-dispersing film is adhered at the inner side of the light-penetrating wall of the light-transmission plate and a reflecting layer is arranged at the inner side of the trunk bulkhead of the light-transmission plate. The light given out by the LED light emitting module can be uniformly and softly radiated in a direction needing illumination after being dispersed by the light-transmission plate. In addition, the invention provides the radiating structure applicable to the LED illuminating apparatus, which is composed of a base plate, LED particles and copper (or aluminum) coated on the front surface or back face of the base plate. The invention has excellent radiating effect, low cost and long LED service life, saves energy, protects environment, and adequately satisfies the popularization and application of the LEDs with different powers.

Description

technical field [0001] The invention relates to an LED illuminating device and its heat dissipation structure, which is suitable for any place where lighting is required, and the heat dissipation structure is respectively suitable for low-power or high-power LED lighting. Background technique [0002] Lighting devices are basic facilities, and the light sources usually used are high-power fluorescent lamps, incandescent lamps, and halogen lamps. The disadvantages of using realistic light sources are: 1. The lamp tube is easily broken during transportation and installation, which brings many disadvantages to the construction; 2. The high breakage rate of the lamp tube increases the cost of use; 3. The life of the real light source is generally relatively Short, need to replace the lamp tube frequently, the continuous working life of the general incandescent lamp is about 1200 hours, the continuous working life of the fluorescent lamp and the halogen lamp is about 3000 hours; ...

AI Technical Summary

Problems solved by technology

The disadvantages of using realistic light sources are: 1. The lamp tube is easily broken during transportation and installation, which brings many disadvantages to the construction; 2. The high breakage rate of the lamp tube increases the cost of use; 3. The life of the real light source is generally relatively Short, need to replace the lamp tube frequently, the continuous working life of the general incandescent lamp is about 1200 hours, the continuous working life of the fluorescent lamp and the halogen lamp is about 3000 hours; The rectifier of the fluorescent lamp is easily damaged, and the cost of frequent replacement of the lamp tube and maintenance is high; 5. For fluorescent lamp lighting, it also needs high voltage to start, and it takes a certain time to start to light, with low efficiency and high power consumption. And fluorescent lamps contain mercury, which has certain pollution to the environment and is also a well-known shortcoming.

Generally, low-power LEDs use PCB boards as substrates. PCB boards are generally made of organic resin and other raw materials, and are directly wired on the PCB board without heat dissipation treatment. This kind of PCB board has poor thermal conductivity. When using LEDs that generate heat , the heat is not easy to dissipate, causing the junction temperature of the LED to rise, which directly affects the light efficiency of the LED, accelerates its light decay, and reduces the service life of the LED

In recent years, some aluminum substrates have been used as LED substrates, which are conducive to the heat dissipation of LEDs. However, due to the high price of aluminum substrates, they are not suitable for low-power LEDs. Due to cost factors, they cannot be widely used in the market.

For high-power LEDs, it is generally used to print circuits on aluminum substrates, and then dissipate heat through an external heat sink. Since there is an insulating layer on the aluminum substrate, the thermal resistance is also large, and this method cannot achieve the best heat conduction effect.

[0005] After retrieving Chinese patents, there are some inventions related to the application of LED lighting, but their connection arrangement is different from the present invention, and there is no heat dissipation structure, and the realized work efficiency, function and service life cannot meet the requirements of LED in the market. Vigorously popularize and apply, and cannot solve the technical problems existing in existing lighting devices

Images