LED Shower Light Water Powered

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tom baker

tom baker

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Master Electrician
Sylvania has a water powered LED shower light:
http://store.sylvania.com/show_item.cfm?i=72450
About $40.
Its an interesting product and shows some of the applications that LEDs can have.
I just finished my committee report for the traffic signal organization on the lighting developments, the title could of been "Comning Soon to a Street Near You- LED Lighting".

Other applications you'll see soon are LED parking garage lighting.
 
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tom baker said:
Sylvania has a water powered LED shower light:
http://store.sylvania.com/show_item.cfm?i=72450
About $40.
Its an interesting product and shows some of the applications that LEDs can have.
I just finished my committee report for the traffic signal organization on the lighting developments, the title could of been "Comning Soon to a Street Near You- LED Lighting".

Other applications you'll see soon are LED parking garage lighting.
Click to expand...

Tom, I hope you put in your report that after six months the traffic signals with LED's look as if some one stole about 1/3 of them. The ones in my area that have been converted now look like a weird connect-the-dot light.
 
ceb58 said:
Tom, I hope you put in your report that after six months the traffic signals with LED's look as if some one stole about 1/3 of them. The ones in my area that have been converted now look like a weird connect-the-dot light.
Click to expand...

Thats a driver failure in the module. Poor design.
We've had LED signal heads for 10+ years, as with others, we are now on our second generation. But no one know how long LEDs signal heads, or in general LEDs will last.

The life of an LED is determined by the junction temperature. Its felt some may go past 60,000 hours but there is no documentation on that yet.
So for right now the life is termed L70, or the hours until the output falls to 70% of initial.
 
tom baker said:
Thats a driver failure in the module. Poor design.
We've had LED signal heads for 10+ years, as with others, we are now on our second generation. But no one know how long LEDs signal heads, or in general LEDs will last.

The life of an LED is determined by the junction temperature. Its felt some may go past 60,000 hours but there is no documentation on that yet.
So for right now the life is termed L70, or the hours until the output falls to 70% of initial.
Click to expand...

That's a good explanation, Tom.
Now let me translate.
These things are new and expensive, we dont know how long they last, live with it:grin:
 
Tom,
Does your report address the issue of the LEDs not running hot enough to melt the snow and ice off them? The contractors in this area that service the traffic signals are getting service calls to clean the snow and ice off so the signals can be seen.
 
don_resqcapt19 said:
Tom,
Does your report address the issue of the LEDs not running hot enough to melt the snow and ice off them? .
Click to expand...

This is pretty weird, I just saw my first instance of that not more then 2 hours ago and I wanted to ask Tom about it. I had also come to the conclusion the LEDs where not hot enough to keep up with the snow.

My area is now experiencing a wind driven snow at 19 F and some major intersections I went through looked 'dead' and traffic was a mess. Once I got close I could see my direction was blocked but other directions apparently could see the light. It seemed extremely dangerous and I would think they have to address this.
 
ceb58 said:
That's a good explanation, Tom.
Now let me translate.
These things are new and expensive, we don't know how long they last, live with it:grin:
Click to expand...

Maybe your area buys from the wrong supplier?

We have had them in this area for many years and I can't remember seeing any not working. :smile:
 
iwire said:
Maybe your area buys from the wrong supplier?

We have had them in this area for many years and I can't remember seeing any not working. :smile:
Click to expand...

Yea, but in my area it's not 19 f'en degrees with blowing snow:grin:

I know you are such a hardy bunch of people:smile:
 
don_resqcapt19 said:
Tom,
Does your report address the issue of the LEDs not running hot enough to melt the snow and ice off them? The contractors in this area that service the traffic signals are getting service calls to clean the snow and ice off so the signals can be seen.
Click to expand...


Ya guys you are not alone on this matter the commercal truckers did have issue with early LED's on the trailer lights they were not hot enough to keep the snow or ice build up melting it.

I try to recall there were one manufacter did add a invisbile heater grid on the LED lens to keep the snow and ice melted { it is a low voltage verison so I don't know about the 120 v verison will work unless sorta of self regulated heater in there.

Merci,Marc
 
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