As an important component of the Yangtze River Delta economic circle, Hangzhou's economic aggregate ranked fourth in the provincial capital cities in 2012. Today, Hangzhou is an important production base and estuary for the LED lighting industry, and has received extensive attention from the industry. “Hangzhou has a good foundation as a manufacturing center for traditional lighting fixtures.†Zhang Xiaofei, CEO of Gaogong LED, said that although Zhejiang is temporarily behind the Guangdong region with the rise of LEDs, LED lighting applications in Hangzhou have developed rapidly in the past two years. .
Seminar organizer - Gaogong LED CEO Dr. Zhang Xiaofei
Since the second half of last year, the pace of structural adjustment of the lighting industry in Zhejiang has accelerated, and traditional lighting has gradually turned to LED lighting. Weng Maoyuan, chairman of the Zhejiang Lighting Association, said: "From January to June this year, the export value of LED lighting products in Zhejiang Province (excluding Ningbo) reached 450 million US dollars." Among them, the export volume of large enterprises has doubled, and this year is expected. At the end of the year, the export volume of LED products in Zhejiang will reach 10 billion yuan.
Weng Maoyuan, Chairman of Zhejiang Lighting Association
But overall, Hangzhou lighting companies are still mostly small and medium-sized enterprises, mostly export-oriented. Statistics show that there are currently hundreds of companies involved in the export of LED lamps. Although there are advantages in export channels, with the maturity of the European and American markets, the quality demand for LED export products will also become higher and higher, and the selection and optimization of the supply chain of LED manufacturing enterprises will be more and more important.
Seminar site
This seminar invited Gong Wen, general manager of Jingtai Optoelectronics, Li Zhaohua, deputy general manager of Mingwei Electronics, Lu Dawei, chief engineer of Zhejiang Yuanda Electronics, Hua Shunxiang, general manager of Zhongheng Paiwei Power Sales Department, and Qi Kaitai, general manager of Likoda Optoelectronics. Liu Yanfeng, deputy general manager of the inductive testing, made a wonderful keynote speech and discussed in depth the positioning and optimization of the supply chain for the positioning of small and medium-sized enterprises.
Gong Wen, General Manager of Shenzhen Jingtai Photoelectric Co., Ltd.
Gong Wen, general manager of Jingtai Optoelectronics, demand for higher light quality
Indoor lighting pays more attention to light quality RA: 80 becomes the standard, 90 becomes the target Light color: close to Planck curve Spot: uniform, no glare Color tolerance: Mike Adam ellipse, 5SDCM
Li Zhaohua, Deputy General Manager of Shenzhen Mingwei Electronics Co., Ltd.
Li Zhaohua, deputy general manager of Mingwei Electronics
Topology comparison
| Â | advantage | Disadvantage |
| Isolated (PSR Flyback ) | No requirements for the safety of the luminaire | High cost, low efficiency |
| Non-isolated (buck-boost ) (buck ) | Low cost, high efficiency | High safety requirements for lamps |
| Linear constant current Linear | High production efficiency and easy integration | Need high voltage LED light and COB basic cooperation |
Lu Dawei, Chief Engineer, Zhejiang Yuanda Electronic Development Co., Ltd.
Yuanda Electronics Chief Engineer Lu Dawei
Interpretation of delamination, blistering and cracking of aluminum-based circuit boards
Reasons (1) Causes of the board The copper layer dielectric layer is defective or pressed;
(2) The production process of making circuit boards is not standardized;
(3) reflow parameters;
(4) The circuit board is damp.
Hua Shunxiang, General Manager, Sales Department, Hangzhou Zhongheng Paiwei Power Co., Ltd.
Hua Shunxiang, General Manager of Zhongheng Paiwei Sales Department
LED lighting products status and failure analysis:
General Manager of Shenzhen Likeda Optoelectronics Co., Ltd.
Li Keda, General Manager
2 optical optical distribution requirements for different products
Indoor: spotlights, downlights, PA lights, etc., need to consider the light efficiency, illumination, control 100K-200K color temperature change interval;
Outdoor: floodlights, stage lights, wall washers, etc., need to consider evenly mixed light, clean spots.
Liu Yanfeng, Deputy General Manager of Shanghai Incentive Testing Technology Service Co., Ltd.
Liu Yanfeng, deputy general manager of excitation testing
Test evolutionary history
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