How are LEDs work inside?And will more consumers see the brighter prospect of LEDs?

LEDs last between 40,000 and 95,000 hours, and if an LED operates for 12 hours daily this would potentially give a life span of approx 20 years.

An LEDs longevity all comes down to the question of lumen depreciation. Some experts reckon that once an LED reaches 30% depreciation its lifespan is pretty much over, although in fairness it will continue to work but with reduced light output.

Not surprisingly one of the key operating factors impacting LED lifetime performance relates to the temperature at the junction where the diode connects to its base. The theory is simple enough. Keep junction temperatures low and the rate of lumen depreciation decreases. What’s needed here is effective heat dissipation designs and there are plenty of those around. The real design challenge is that most LEDs are contained within a resin that is just not that good at letting heat go.

The heat that LEDs generate stems from the P-N junction that is created in semiconductor–based devices.

As electrons travel in the structure of the semiconductor they fill electron holes and emit photons, a form of light. The heat developed at the P-N junction is actually electrical energy that has not been converted into light. It is imperative that this heat be conducted away via conduction, convection or radiation methods.

So LEDs must efficiently transfer as much heat as possible away from the P-N junction because a heat-stressed LED will lose efficiency and light output will diminish and could possible fail altogether. So what is the recent breakthrough that will add to consumer confidence? Well, it involves a claim that LED system costs can be cut by 40% which is no mean feat.

The LED Bulb of  EUROLEDS SARL. 

A recently launched market research report at MarketResearchReports.com reports the market forecast of the Asia Pacific consumption of light emitting diode (LED) lamps in General Lighting applications, which mentions the forecast from 2014-2019.

Lewes, DE -- (ReleaseWire) -- 03/05/2015 -- The market forecast is segmented by 8-major LED Lamp categories and 3-major End-User categories: Government, Commercial / Industrial and Residential. The study also provides a detailed forecast by geographical segments: China, Korea, Japan and Rest of Asia.

According to this report – in 2014, the APAC region consumption value of LED lamps, which are used in General Lighting, reached USD 2.72 billion and would be increasing to USD 6.67 billion in 2019. Market forecast data in this report refers to consumption (use) for a particular calendar year; therefore, this data is not cumulative data. The consumption value will increase with strongly rising quantity growth partially offset by declining average prices. All values and prices in this report are at factory-levels, and are in current dollars, which include the effect of a forecasted 5 percent annual inflation rate over the forecast period.

General Lighting Stationary Applications: General Lighting is lighting that is used to provide the main illumination of an area. It includes Directional Lighting, Supplementary Lighting and Architectural Lighting in the General Lighting category. In 2015, "architainment lighting" – a blend of architectural and event lighting has been added to the General Lighting segment. LED lamps used in signage (digital sign boards) and displays (back-lighting units for LCD/other screens) are not included in the General Lighting segment; however, lamps used in display windows or display cases (for example: retail store displays) are now included in the General Lighting segment. LEDs in signals (for example traffic signals), portable flashlights (torches) and decorative Christmas/holiday lighting are not included in the market forecast data for this study.

LEDs are used in both functional and decorative light fixtures, with an advantage of energy savings. Compared to incandescent lighting, LED-based solid-state lighting (SSL) delivers visible light with reduced heat. In addition, its solid-state nature provides for greater resistance to shock, vibration and wear, thereby significantly increasing its lifespan.

According to this report, General Lighting LED lamp consumption in APAC is forecast to reach USD 6.67 Billion in 2019.

NEW CEILING LIGHT ! ! LED Suspended Downlight 30W/60W

To complete our bussiness illumination lighting products ,we have add new ceiling light of different voltage on our webset http://www.ledgrossiste.fr .Whether for a new building or renovating an existing space, if you use LED lights,you could benefit from solutions synonyms lighting, light quality , energy savings ,or substantial service . LEDGROSSISTE ceiling luminaire can be used to replace conventional lighting in general lighting applications.

it can be used for large offices , conference rooms , department stores and specialty stores , laboratories , airports and some civil division .

General Characteristic			Mark	F
Power and Lumens	30W  3000LM		Life Span	50000hr
LED Quantity	1pc		Lighting Decay after 5000hr	5%
Color	Cool White/Natural White/Warm White		Property of Light
Color Temperature	6000K/4500K/2700K		Color rendering index	80
Light Source Replaceable	Yes		Electric Characteristic
Driver included	Yes		Voltage	AC85~265V
Safty Class	Class II		Frequency	50-60 Hz
IP	IP20		PFC	＞0.95
IK	IK08		Install Feature
Beam Angle	120°		Installation	Inset Clip
Material	Aluminum / PC		Product Data
Lamp Shell Color	White		Item No.	HB00730
Dimmable	No		Product Name	LED Suspended Downlight
Cable	3*1.0mm²		Pieces per pack	1pc
Operating Temperature	(-)40℃ ～ 55℃		Packs per carton	4pc
Glow-wire Test	850°C/5		Weight	2.2kg/pc
Certificate of CE	CE/ RoHS		Dimension	145*300*355mm

Features:

Instant start when lighting on.

Very low energy consumption; at least 80 % savings.

Easy to install , and it fits easily and offers an ideal lighting for all living rooms or shops.

High color rendering index (CRI > 80), for vivid colors.

Pure and elegant design.