2014 is a particularly important year for the LED lighting industry. Since this year, European and American countries have officially eliminated the 40~60W incandescent bulbs that are the most used in the civilian market. This provides an opportunity for the promotion and application of LED lighting in the general consumer market, and makes LED replacement bulbs a hot segment. market. According to the research firm McKinsey's forecast, LED bulb shipments will increase rapidly at a compound annual growth rate of 57 from 2012 to 2016. In 2016, global solid-state lighting LED bulb shipments are expected to reach 2.6 billion pieces. In 2020, it will reach a scale of 4.8 billion pieces.
However, while the market is rapidly developing, today's LED lighting industry is facing a common problem: how to reduce the system cost while continuously improving the use value of the product. On the one hand, in order to enter a broader civilian market, the target price of LED lamps has declined rapidly in recent years, prompting the product to move toward higher integration; on the other hand, as the LED lighting market gradually revolves around a small number of large suppliers. The integration has made the market put forward more stringent requirements for the application value of the lamps. The reliability, service life, performance in environmental protection, energy saving and intelligent control have become the primary considerations. Especially in the demand for dimming function of LED lamps, an important feature of the current market development is that dimming is no longer just to achieve the goal of energy saving, but more to reflect the gradual improvement of people's quality of life requirements. Therefore, smooth dimming performance, wireless dimming function, integration with a variety of sensors, etc., are greatly valued for the use of LED lighting in the livelihood market.
Intelligent driving, adapt to a wide range of working environments In general lighting applications, LED lights need to be replaced with Triac dimmers in order to replace incandescent lamps, so that on the one hand, the brightness can be adjusted according to the actual lighting requirements, thus saving energy consumption; It also creates a variety of lighting ambiences and situations for home or business applications. For color lighting applications, such as architectural lighting and stage lighting, PWM dimming can be used to modulate various color LED luminaires. Speaking of the challenges faced by current dimming technology, VenShan, vice president of analog devices marketing at ISSI, said: Triacs have leading edge, trailing edge and digital dimmers, and TRIAC dimmers are LED drivers. A sinusoidal alternating voltage with periodic chopping is provided, so the driver chip must convert this AC chopping power supply into a power supply that the LED can use. In addition, the flickering problem that occurs during the dimming process of the luminaire is also a problem that manufacturers often encounter when designing the luminaire.
To this end, ISSI offers a broad portfolio of HBLED driver ICs, the IS31LT3350 and IS31LT3360 are DC-DCLED driver ICs for PWM dimming or analog dimming; in addition, AC-DC driver ICs include constant current driver IS31LT3932 And the IS31LT3935, which supports dimming. In particular, the IS31LT3935 is a flicker-free series of devices that use ISSI's proprietary AccuDim technology to mimic the efficiency of incandescent bulbs, allowing the dimmer to maintain a high power factor while simultaneously Supports leading edge, trailing edge, and digital dimmers, which saves bill of materials (BOM) costs by providing fewer external component counts.
Speaking of the development trend of dimming performance of LED lamps at this stage, Doug Bailey, vice president of marketing for PowerIntegrations (PI), said: Increasing the intelligence level of the driver level will increase the application value in light output. It is also a good opportunity to introduce new products with enhanced control features. New products with better dimming circuits and compatibility with more thyristors will gain an important market position as the market will require products to support more customers for a wider range of working conditions or environments. In order to achieve a quick and easy design, and can be transplanted into different lighting design products, to help lighting engineers improve work efficiency and shorten the time to market.
Taking PI's recently introduced LYTSwitch-4 driver IC as an example, this device for high voltage applications provides accurate output current and high efficiency for LED bulb and tube applications, high bay lighting, and excellent dimming performance. Even when used with leading edge and trailing edge TRIAC dimmers and with a low conduction angle, the power supply design is still NEMASSL-7 compliant, and the drive starts faster, usually less than 500 milliseconds, even when turned on When the light output is less than 10, the starting speed is also fast, so that the phenomenon of sudden brightening can be eliminated.
In addition to the LED bulb replacement market, the ROHM related person in charge added that the current thyristor dimming has been basically popular, but it is limited to the replacement of the previous luminaire products. The future demand will be PWM dimming technology. The downlights and ceiling lamps have been confirmed in the fast-growing Japanese LED lighting market. The development focus of LED lighting dimming technology will be attributed to PWM dimming through MCU, which can be through wired or wireless communication technologies (such as Wi-Fi, ZigBee, Bluetooth).
It is understood that ROHM has a PWM dimming reference design for a variety of LED driver chips, and is supported by its LAPISSemiconductor subsidiary's low-power MCU and wireless technology integrated solutions to meet a variety of application needs. For example, the BM1050AF reference design for PWM dimming downlights can be applied to most downlights below 100W for complete linear dimming, and the low-power MCU can be powered from the BM1050AF's power supply pin to ensure low power The dimming performance required for power consumption and high speed processing. In addition, ROHM Shenzhen Design Center is also based on the reference design of this drive and MCU, customized design for a variety of different needs, and won the praise of users.
|
Material |
Galvanized iron wire or PVC coated iron wire |
|
Surface Treatment |
PVC coated,PVC sprayed,electric galvanized ,hot dipped galvanized |
|
Wire Diameter |
1.0-6.0mm |
|
Mesh Opening |
20*20mm,50*50mm,60*60mm,80*80mm,100*100mm etc. |
|
Mesh Height |
0.5m-6m |
|
Mesh Length |
4m-50m |
|
Post & Rail Diameter |
32mm,42mm,50mm,60mm,76mm,89mm etc |
|
Post & Rail Thickness |
1.5mm,2.0mm,3.0mm,4.0mm,5.0mm etc |
1.PVC coated chain link mesh:
In this process, iron wire is first coated with zinc and then covered with a vinyl polymer coating that helps prevent rust and adds color.
2.Chain link mesh packing:
a.The rolls ended with jute or plastic bags
b.Pallet
c.As you required
3.Chain link mesh hole size:
45mm*45mm--100mm*100mm
4.Chain link mesh wire diameter :
3.0mm to 5.0mm
5.Chain link mesh uses:
Mainly used in leisure sportsfield,basketball field,park ,garden, green field ,parking field , waterways,residence safeguard etc.
Pvc Coated Fencing,Pvc Chain Link Fence,Pvc Chain Link Wire Mesh,Galvanized Chain Link Wire Mesh
Hebei Yicheng Wire Mesh Products Co., Ltd , https://www.yc-fence.com