Can Anyone help me out?

[gle]

I need to calculate the number of LEDs for outside (road) lighting. Tha luminous flux on the road is 30 lux, and the lamp is at a height of 12 meters. How much luminous flux do I need for the lamp? So, how many LEDs do I have to use to get this? Can I reach a 60 watts for this lamp?
What LED can I use? :ohgeez:

 

[deadrx7conv]

Chart here and similar to most LED street lights. But, some have different spreads whether floody or spotty. But, looks like you're looking at over 120w of LEDs or more.

http://www.gg-energy.com/LED_Street_light_fixture.cfm

 

[jason 77]

Are you talking about buying a pre-made unit or making one your self? With the 30 lux, is that what the current light is putting out, if so how are you measuring this?

 

[AnAppleSnail]

I need to calculate the number of LEDs for outside (road) lighting. Tha luminous flux on the road is 30 lux, and the lamp is at a height of 12 meters. How much luminous flux do I need for the lamp? So, how many LEDs do I have to use to get this? Can I reach a 60 watts for this lamp?
What LED can I use? :ohgeez:

You can convert lux on an area to lumens. How much area is it lighting? The width of a street and two sidewalks, for how much distance? You'll want to use an array of LEDs.

 

[gle]

Are you talking about buying a pre-made unit or making one your self? With the 30 lux, is that what the current light is putting out, if so how are you measuring this?

I am talking of making a unit by myself. The 30 lux is given by a standard...:)

 

[AnAppleSnail]

I am talking of making a unit by myself. The 30 lux is given by a standard...:)

1 lux = 1 lumen per meter squared. So you need 30 lumens of output per meter illuminated, plus losses. How much area does each light need to light?