LED flat light structure analysis and planning considerations

the structure of the surface light source first has the following information:
1. Aluminum Structure
appearance structure, and the main structure of the LED heat dissipation-usually using AL6063, aluminum extrusion die, the upfront cost of low investment, the appearance of beautiful treatment, heat dissipation, the previous days to see the exhibition also found that there are manufacturers to do die-casting structure, so the IP level can do a higher point, and seal the light better, all beautiful, But the upfront cost of tooling is higher
2. Dispersing Board
The light Guide plate evenly scattered, as well as blocking dot function-dispersion board usually use Acrylic 2.0 sheet or PC material, the cost of acrylic low and light transmittance than pc higher, acrylic brittle anti-aging function is weak, the PC's offer is slightly valuable, but anti-aging function strong. Dispersion board in the future can not see DOT, and light transmittance at 905 at the mercy of. Acrylic transmittance in 925,pc is 881. We are able to select the dispersion board according to the demand, usually use the acrylic material
3. Light Guide Plate
the next side of the LED light through the dot refraction to change the light point of view scattered-the guide plate is the heart of the flat lamp, dot planning is very important, network planning is not good, see all the light effect is very poor, will usually present 1. Center bright, synchronicity side dark 2. The light Biolion side, the center Dark 3. Part of the dark area is remarkable.
Light Guide Plate of a large part in the planning of the DOT, followed by the selection of the plate, but blindly looking for the brand plate is not right, because many brands like Japan's Mitsubishi, most of its good plate is a good order, many stores out of the Mitsubishi plate more for some scrap, Its low transmittance is not as high as the plate, so the selection of the plate does not have to look at the plate manufacturers, as long as the test light transmittance high luminous efficiency OK, would have been able to
4. Reflective Paper
reflection of the Light guide plate on the opposite side-usually RW250
5. Rear cover Plate
sealed light body-usually Al aluminum, the whole texture is strong, and can play a little heat dissipation effect
6.LED Light Source
usually use 3528 people also use 5630 and 5050,5630 and 5050 light effect is not high and dot planning difficult, the versatility is poor, but the cost is low. 3528 light Efficiency high dot versatility, usually just beginning to do can buy other's guide plate application, do not need to design from scratch proofing
7. Drive Power
Lamp Driver--now there are 2 kinds of power supply mode 1. Direct cross-flow power supply (high power, pf value up to 0.95, cost-effective) 2. Constant pressure belt cross-flow form (functional stability, but low power, high cost) is usually used in this form is the request of Certified customers planning, Because the luminaire is a 24V input low-voltage lamps, do not need to do safety regulations, direct use of the safety of the power supply can be shipped to various countries.

issues to be aware of during the planning of production
1. Thermal conductivity of the thinner the better, the best use of self-adhesive conductive adhesive, otherwise it will affect the thermal conductivity.
2. The selection of dispersing plate, now on the market many do flat light is usually selected for the smooth surface of the dispersion board, the dispersion board has a flaw, electrostatic, in the production process of a simple absorption of dust in the light, and in the long-term use in the dusty will pass through various paths into the lamp body, will form a lamp bright spots. In the early days of the use of dispersed dispersion board, this dispersion board light effect is good, static electricity is small, can prevent dust into the light in the body of the bright spot, but the dispersion plate transmittance is lower than 85-880, whether or not to choose this depends on our own planning meaning.
3.LED lamp selection, as far as possible the use of high-power lamps, because the side light-emitting flat light in the heat dissipation and luminous flux output are limited, power dissipation will have an impact, and low light efficiency.
4. Into the surface of the adhesive reflective paper as far as possible not to glue, glue will suck light, and the simple appearance of Bright edge, but a large area of the light guide plate is the need to stick a little, otherwise it will present a shadow, because the reflective paper is not sticky, in the light body loose warping will present this kind of situation.

Kunming LED display Yunnan LED display

Pu ' er tea house talk about Daquan

Www.wenxuekongjian.com

Www.zhaoshuoshuo.com

Www.wenxuekongjian.com

This article is from the "10546422" blog, please be sure to keep this source http://10556422.blog.51cto.com/10546422/1677120

LED flat light construction analysis and planning considerations