The document summarizes the eco-optimization of a lighting product. Researchers from Nottingham Trent University and Ona Product S.L. identified several areas for improvement in the prototype, including access for repair, driver protection, joint friction, upgrade ability, thermal efficiency, and ingress protection. The optimizations included new joints for easy upgrade and rotation, an improved heat sink for better thermal performance using less material, easier access for repair and disassembly, and stronger protection against water and dust. Further work was suggested to optimize the light diffuser.

1. Jose Casamayor, Sakthi B. Gowder, Daizhong Su, Paul Johnson
Advanced Design and Manufacturing Engineering Centre
School of Architecture, Design and the Built Environment , Nottingham Trent University, UK
Juan Costa
Ona Product S.L. Spain
http://www.ecolightsproject.eu/
http://www.recycleled.eu/
Eco-lighting Product Design

2. October 11, 2013 2
OUTLINE
 Eco-optimization
 Case study
 Areas to optimize
 Results
 Further optimization work

3. October 11, 2013 3
ECO-OPTIMIZATION
 Eco-optimization is to optimize a product, by focusing in different
areas to maximize/minimize with the final aim to reduce its
environmental impact.

4. October 11, 2013 4
CASE STUDY
 The Lighting product was developed by Ona Product S.L, Spain and
Nottingham Trent University with the support of UK SIS grant and
NTU funding
 With the support of the European Commission under CIP Eco-
innovation programme, the ‘Ecolights’ project consortium
members further developed the product for market deployment.
 The prototype developed need to be eco-optimized.

5. October 11, 2013 5
AREAS TO OPTIMIZE
Based on the analysis of the ref. prototype several areas were
selected for optimization:
1. Access/disassembly: It does not allow easy access for repair and
disassembly. Joints have to be broken in order to have access to
components or dismantle the product totally.
2. Driver arrestment: Current casing design does not arrest the
driver, so this can be damaged if the lighting is moved abruptly,
leading to premature end of life of driver.
3. Joints: Units rotate with too much friction among them, which
scratches the surface damaging the units’ surface. Also they do not
allow units rotate 360°, constraining light control, which lead to
energy waste (light were is not needed).
4. Upgrade: More units cannot be added, so the product can become
obsolete in a shorter period of time. Modular design allows for
upgrade over time.

6. October 11, 2013 6
AREAS TO OPTIMIZE
5. Thermal efficiency-heat sinks: Heat is one the common
problems with LEDs. Thermal efficiency of the heat-sink had to be
improved to improve heat diffusion and extend the lifespan of the
LEDs.
6. Ingress Protection (IP) rating: The product has to satisfy IP 45
standards, in order to be more durable under wet conditions (i.e.,
toilet).
7. Material reduction: Material used in the casing and other
components have to be optimized/minimized.

7. October 11, 2013 7
RESULTS

8. October 11, 2013 8
RESULTS
Possibility to upgrade – new joints

9. October 11, 2013 9
RESULTS
Improved thermal efficiency – new heat-sink

10. October 11, 2013 10
RESULTS
same material and 50 % more thermal efficient

11. October 11, 2013 11
RESULTS
Improved thermal efficiency – new heat-sink

12. October 11, 2013 12
RESULTS
Easy access – easier repair/disassembly

13. October 11, 2013 13
RESULTS
Driver arrestment – less prone to break under motion

14. October 11, 2013 14
RESULTS
Less components – easier/shorter disassembly time

15. October 11, 2013 15
RESULTS
New joints – easier/shorter disassembly time and better
rotation

16. October 11, 2013 16
RESULTS
Better Ingress Protection (IP)

17. October 11, 2013 17
FURTHER OPTIMIZATION WORK
• Light diffusor: Light output depends on the light diffusor, the
design of the diffusor have to be analysed and optimized to produce
maximum light output whilst keeping glare levels below human
harm threshold.

18. THANK YOU FOR LISTENING
Any questions?
More information at:
http://www.ecolightsproject.eu/
http://www.recycleled.eu/