Development of Design Rules for a LED Spot Light Module

Development of Design Rules for a LED Spot Light Module

Janssen, L.P.A.

Bakker, C.A. (mentor)
Verwaal, M. (mentor)
Coninx, K.M. (mentor)

Industrial Design Engineering

Design Engineering

Master of Science Integrated Product Design

2010-04-08

This thesis clarifies the graduation project for the master program of Integrated Product Design at the University of Technology Delft. It describes the development of an application guide for the Fortimo SLM (Spot Lighting Module). The Fortimo SLM is a light engine, based on LED technology and consists of a LED spot light module and driver combination. Philips Lighting needs an application guide for the Fortimo SLM. This involves a document which describes the functional specifications of the SLM module and driver. Secondly the requirements for the interfaces are defined towards the complete fixture. To demonstrate the feasibility of a fixture with the Fortimo SLM a reference luminaire is designed. Currently an application guide is available for down lighting modules and outdoor modules and drivers. This does not fulfill all the needs of a spot light fixture builder (OEM). Therefore the goal of this thesis is to provide the additional design rules that are necessary for a spot light fixture builder. Part 1: Analysis During the analysis phase, the gap between the design guide of the down lighting module and the requirements that can be expected from a spot light fixture builder are investigated. Therefore the perspective of the OEM is investigated towards their customers. This defines the typical requirements that are necessary for the fixture builder (OEM). This to minimize the risk that design rules outside the technical scope of the OEM Philips relation are overseen. The missing aspect, which has to be researched by the development of concepts, and finally the reference fixture design are: - The optimal conditions for the secondary optics and how a clear light beam can be created; - The different options and restrictions of heat sinking, and how the module can be cooled most efficiently; - The possibilities and limitations towards the usage of track lighting. And how this influences the complete fixture design. Also the major trends that the design of fixture builder will have to deal with are described. During the development of the reference fixture, these trends have to be kept in mind: the light effect, flexibility and sustainability, and how the different concepts influence this. Part 2: Design During the design phase, the design requirements of the track lighting application are clarified. From the general requirements several concepts are developed. This to align with the trends that OEMs have to deal with in the their new fixture portfolio; flexibility, transparency and compact with LED. The three concepts are evaluated and compared. One is chosen to develop into a reference luminaire, based on the following objectives: (1) Provide guidance to prevent luminaire builders to make standard mistakes, (2) Give direction towards the market, (3) Make a practical example of the feasibility of the module The two concepts that fit the goal of the application guide the best are transparency and flexibility. The biggest difference between these concepts is the use of respectively a passive and an active cooled heat sink. Where the application guide is intended for direct use, active cooling is preferred. This type of cooling does also fit the developments of the complementary partners and will therefore be the best fit to the market. On the other hand, passive cooling scores better related to sustainability. It is recommended to keep the possibilities of passive cooling in mind and communicate this towards the complementary partners, when the LEDs are increased in performance. Finally, the concept “flexibility” is selected to develop into a reference luminaire. Part 3: Application guide The analysis and the product development has generated several insights, regarding the usage of the Fortimo SLM. This information is used to write an build-in guide for the new application.

LED
spot light module

http://resolver.tudelft.nl/uuid:4983bb85-046a-4106-b0e0-b37022dc09a9

2011-04-08

Campus only

Student theses

master thesis

(c) 2010 Janssen, L.P.A.