Project Title:
Intelligent Omnidirectional LED Bulb
Project Reference:
ART/134CP
Project Period:
20130315 - 20140214
Funds Approved (HK$’000):
5331
Project Coordinator:
Dr Enboa Wu
Deputy Project Coordinator:
/
Deliverable:
1) Omnidirectional emission LED bulb It aims to replace 40W incandescent bulb (or equivalent to 9W CFL lamp replacement). A non-imaging optical technology will be used to develop an omni-reflective optics for re-constructing the narrowed beam emission pattern from LED into wide angle emission of the LED bulb in both forward and backward regions. This optics, combined with "to be developed" LED driving circuit design & commercial LED components will create a LED bulb to replace 40W incandescent light bulb (or 9W CFL equivalent) that fullfils light distribution requirement of US Energy Star; luminous flux output (485lm) requirement of Japan & exceeds lamp efficiency requirement (66lm/W) according to grade 1 label in CFL's "Mandatory Energy Efficient Labeling Scheme" in Hong Kong. Deliverable Specifications: a) Lumen Output: equal to or great than 485lm b) Lamp Efficiency: equal to or greater than 66lm/W c) Input Voltage: 100 / 120 / 220 VAC d) Light Intensity distribution: Fulfills US Energy Star Criteria on Integral Lamp 2) High lumen ouptut (> 800lm), high efficient (<10W) omnidirectional emission LED bulb It aims to replace 60W incandescent bulb (or equivalent to 13W CFL lamp replacement). Chip-on-board LED packaging technology, combined with omni-reflective optics and LED driving circuit, will be used to optimize the overall lamp efficiency. "Birdcage" technology (US7701055) will be also implemented in the bulb to enhance heat dissipation capability. The resultant bulb is therefore, to replace 60W incandescent lamp that fullfils requirements in US, Japan and Hong Kong. 20 prototypes will be provided to Housing Authority for energy efficiency test in Public Rental Estates. Deliverable Specifications: a) Lumen Output: equal to or greater than 810lm b) Lamp Efficiency: equal to or greater than 80 lm/W c) Input Voltage: 100 / 120 / 220 VAC d) Light Intensity Distribution: Fulfills US Energy Star Criteria on Integral Lamp
Research Group:
Ms Li Zhou
Mr Yang Yue
Ms Yuen Yan Lam
Ms Sammie WAN
Mr Bruce P.S. Lam
Mr Wai Kin Luk
Mr Tat Delfin Mancilla Lam
Mr Suet Man Yau
Mr Luis Ng
Mr Kai Cheong Kwan
Mr Ka King, Matthew Wong
Mr Tik Shun, Dickson Leung
Mr Chuen Kuen, Dave Yeung
Ms Xiao Zhuang, Juanna Yao
Ms Man Yee, Irene Pang
Mr Chi Kit Lam
Dr Pau Yee Lim
Mr Kin Ken Kwun
Dr Yingkai Jiang
Ms Yuan, Fiona Wang
Dr Ou, Lindy Dong
Mr Pei Chin Ryan Chung
Mr Hong Xu
Dr Ka Cheung, Dick Kwok
Dr Chun Zhang
Mr Man On, William Fu
Dr Yin Ching Tony Chau
Mr Shui Lung, Charles Kuan
Ms Yuen Han Kwan
Mr Wai Keung Tony Lo
Ms Wai Kee, Vicky Lai
Mr Fu Wa Eric Tong
Ms Linlu Liu
Mr Kam Lai Wong
Mr Siu Lung Lui
Sponsor:
Hong Kong Housing Authority
LEEAN Technology Company Limited
LEEAN Technology Company Limited (Technology Licensing) [Sponsor]
Shenzhen Eastfield Lighting Co., Ltd. [Sponsor]
Shenzhen LED Collecion Enterprises Co. Ltd.
Shenzhen LED Collecion Enterprises Co. Ltd. (Technology Licensing) [Sponsor]
Description:
The objective of this project is to promote energy efficient & environmentally clean "LED bulb" replacing inefficient incandescent & mercury embedded CFL lamps in domestic application. We are proposing an “Intelligent Omni-directional LED bulb” to achieve such goal in 11 months. This project will develop a technology platform for Omni-directional light bulb with light intensity distribution closely matched to that of incandescent light bulb for replacing CFL lamp (or equivalent 60W incandescent bulb) at a lower cost. Deliverables of the project include (1) an Omnidirectional LED bulb to replace 9W (or 40W incandescent bulb equivalent) and (2) an Omnidirectional LED bulb to replace 13W CFL lamp (or 60W incandescent bulb equivalent) The major challenges in this project are (1) uniform light emission over wide angle emission and (2) exceedingly high thermal density on limited space for heat dissipation. To solve these issues, we are going to develop (1) an opto-thermal reflector situated inside the bulb so as on one hand to precisely control the light emission pattern and on the other hand, to share some of thermal loading from the housing and dissipated the heat to the ambient through thermal radiation; (2) chip-on-board LED module, with full integration on optical reflector and electrical solution so as to maximize the overall lamp efficiency. We will work with Housing Authority to test out these technologies & products in Public Rental Estates & Elderly Centre respectively for energy saving & color temperature effect tests. With such technology platform developed, Hong Kong will benefit from this replacement bulb to further save electricity consumption and reduce environment pollution issue (potentially leak out of mercury in CFL). More than that, with consistent color temperature changeable features embedded, it provides “just right” light effects to suit different user scenarios so as to create more harmony society in HK.
