Our presentation in GCIT1015

1. GCIT1015 - Section 2
Chan Hei Man (13215760)
Chan Nok Yiu (13204270)
Li Yue (13250094)
November 27, 2013

2. Objectives
 Examine the development in lighting over the years
 Discover the advantages and disadvantages of LED light
 Investigate if the improvements in lighting are consistent
with users’ preference on various aspects (E.g. price,
design, etc. )
 Find out how the innovation in lighting can improve our
daily lives on various aspects (E.g. home, office, industries,
etc.)
 Raise public’s concern on energy conservation

3. Work Division
Task
Member
Project Background & Content
Chan Hei Man, Chan Nok Yiu, Li Yue
Survey & Data Processing
Chan Hei Man, Chan Nok Yiu, Li Yue
Data Analysis
Chan Hei Man, Chan Nok Yiu, Li Yue
Multimedia Content
Chan Nok Yiu, Li Yue
Conclusion
Chan Hei Man, Li Yue
PowerPoint Design
Chan Hei Man, Chan Nok Yiu

4. Search Strategies

5. Mind Map

6. Presentation Flow

7. Project Background
---Developments in lighting
Incandescent
bulb
Fire
Gaslights
LED Lights
Oil
Lights
Fluorescent
bulb
Electric
Lights
• SMD LED bulb
• COB LED bulb
• MCOB LED
bulb

8. Development of light bulbs

9. Online Survey
 Target: The General Public
 https://qtrial.qualtrics.com/SE/?SID=SV_0wdb8yjHy
N047u5

10. Chart 1: Users’ expectations when
purchasing light bulbs
Relative Importance of Various Factors
When Purchasing Light Bulbs
(1:Most Important; 5:least Important)
Price
Life span
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
3.5
3
Design
4.5
2.5
Energy
consumption
4
Brightness

11. Chart 2: Users’ Opinions LED Light bulbs
(Advantages)
Users’ Opinions on the Advantages of LED Light
Bulbs Over Traditional Tungsten Light Bulbs
Price
10%
Life span
26%
Design
15%
Energy
consumption
29%
Brightness
20%

12. Advantages of LED lights
 Environmentally friendly
 Energy efficient
 Durable
 Controllable

13. Chart 3: Users’ Opinions LED Light bulbs
(Disadvantages)
Users' Opinions on the Disadvantages of LED Lights
70
63.625
60
52.69
49.92
50
Expensive
43.29
Color Shift
40
Not Stable
32.98
Not Technical
30
Not as Flexible as
Incandescent Lamps
20
10
0
Expensive
Color Shift
Not Stable
Not Technical
Not as Flexible as
Incandescent Lamps

14. Disadvantages of LED lights
 Shift color due to age and temperature
 Must be supplied with the correct voltage and current
at a constant flow
 Restricted by the technology
 Maybe more expensive than
incandescent lights

15. Chart 4: Users’ Opinions LED Light bulbs
(Applications)
Interviewees' opinions on the possible use of LED lights
80
68.75
70
62.5
77.08
66.67
68.75
66.67
60
70.83
50
40
30
20
10
0
Retail
Outdoor
spaces
Industry
Household
Offices
Healthcare
Hospitality

16. Applications of LED lights
 Household
 Office
 Retail
 Hospitality
 Industry
 Outdoor area
 Healthcare

17. Video (Applications)

18. Chart 5: Users’ Awareness on
Energy Conservation
Rating on
Energy Conservation Awareness
7.5
Yourself
Hong Kong
People
5
0
1
2
(0: Least concern)
3
4
5
6
7
8
9
10
(10: Most concern)

19. Conclusion
LED lights:
 Most significant symbol of innovation in lighting
 Increasing importance to our daily life
 Ideal for many applications
 Still have some drawbacks
 Allow us to live a more energy efficient and ecofriendly life

20. References
 Wikipedia
 http://zh.wikipedia.org/zh-tw/%E7%87%88
 Youtube
 https://www.youtube.com/watch?v=9OdOkU7JWX8
 https://www.youtube.com/watch?v=jT8WUqURjMk
 Other websites
 http://www.continental-lighting.com/ledbasics/advantages-disadvantages.php
 http://www.prweb.com/releases/2013/9/prweb11122962.ht
m
 http://www.lighting.philips.com.hk/en
 http://www.sunshinelamp.net/

21. References
 Newspaper
 Vogel, B. (2013). Inter airport
europe 2013: LED specialists
unveil new products. Jane's
Airport Review, 25(10) Retrieved
from
http://search.proquest.com/doc
view/1442191883?accountid=1144
0
 Journal
 Global LED lighting market
worth $42 billion by 2019.
(2013, Oct 09). M2 Presswire.
Retrieved from
http://search.proquest.com/doc
view/1440186835?accountid=1144
0