LED SMD 5050 Bulbs

[morley]

We currently have 12SMD 5050 Cool White Led bulbs In 2 scone type lights in the rear of our 5er above our reclining chairs. These Led bulbs in theses scones do not allow for enough light for reading while sitting in these chairs. ( Some of this is due to the positioning of the fixtures on the rear wall of our unit). Will changing these LED bulbs to 48SMD Cool White LED bulbs increase the light enough for reading?. The 48 SMD bulbs supposedly have approximately 450 lumens. The LED bulbs are T10 Festoon Panel type.
What are your thoughts on this change? Will it help with enough light for reading?
Thanks for your comments,
Morley

[morley]

Thanks Guys for all of your thoughts, much appreciated.
Morley

[MEXICOWANDERER]

Will give a report on the 195 chips as soon as they arrive.

[NinerBikes]

I've used 48 SMD's that were 1210's, not 5050's. Draws about .4 to .5 amps per panel. My light fixture uses two of these, and they draw 0.8 to 0.9 amps at around 12.6V per fixture, turned on.

Link

[Almot]

MEXICOWANDERER wrote:
"Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood"

Now, I wanna see you stuff that plate, into a scone.

This is why I brought up the subject of 190 L/watt

Ah, see, this is why I brought the subject of cobs :). Or replace scone with dome. Seriously though, I like the idea of 190L/watt - if it doesn't cost too much. Like audiobooks too.

[MEXICOWANDERER]

"Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood"

Now, I wanna see you stuff that plate, into a scone.

This is why I brought up the subject of 190 L/watt

[Gdetrailer]

tenbear wrote:
Getting back to the original post, 12 5050 lights will not be very bright. If the 48 SMD lights are 48 5050 they will be substantially brighter. But, there is more involved than number and type of LEDs as landyacht mentioned.

IMHO your best bet is to buy a couple of the lights you think may be right and try them. Once you find what you like, buy enough to fill your needs.

Well sort of..

The 5730 LEDs that Landyaccht mentioned ARE substantially BRIGHTER AND quite a bit more energy efficient.

5050s are .22W LEDs (not quite 1/4W)with 12-15 lumens PER CHIP (equiv to 54-68 lumens per watt)

5730s are .5W LEDs (1/2W) 50-60 lumens PER CHIP (equiv to 100-120 lumens per watt).

So it only takes six 5730 LEDs to get the same light as a qty of 48 of the 5050s and at the same time using LESS power!

[Almot]

Can anybody just answer the OP question? 🙂 Without going into 20 years of LED history?

Yes, 48*5050 should be enough for reading. Those 12*5050 that you have, I only use where it doesn't matter - like in the kitchen hood.

You might want to experiment with cob lights as well, they disperse the light at wider angle.

[tenbear]

Getting back to the original post, 12 5050 lights will not be very bright. If the 48 SMD lights are 48 5050 they will be substantially brighter. But, there is more involved than number and type of LEDs as landyacht mentioned.

IMHO your best bet is to buy a couple of the lights you think may be right and try them. Once you find what you like, buy enough to fill your needs.

[Kayteg1]

LED also have to run with some electronic board, what takes some power as well.
I installed main LED on my new house.
Now this is picture of part of the house, where balcony has incandescent bulbs and the rest is LED.
The point is that balcony single fixture takes about the same wattage what all other lights on the picture combined.
Expand the picture to see the difference.
I am fan of bright white, or 6000K btw

[MEXICOWANDERER]

3 watts goes in

One watt worth of light

3 amps goes in

Two watts worth of light

Now. Where or where do those extra watts go?

Electromagnetic force? Microwaves? Spin a motor? Sound waves?

Energy just does not disappear. Three watts in - one watt worth of light.

Oh where oh where does it go?

The biggest obstacle with LED lighting is the chip versus heat sink area ratio.

This is why many lamp peddlers lie so bad about wattage and lumens. They use a 3-watt chip, then discover it needs a heatsink far in excess of what the boutique lamp body can handle. So they cut way way back on the driver current. Tah-Dah! A one watt lamp advertised as a three watt.

I've tried LED bulbs versus a standard 1156 in scone lamps. The incandescent bulbs were light years brighter than twenty dollar highly touted LED bulbs.

I don't flip on a light to get eye strain.

And I am not too crazy about spending 35 dollars for a heat sink and multiple fans for a 300 watt large area lamp.

The standard convection heat sink for a 10 watt high quality CREE or Bridgelux chip is ninety millimeters in diameter. Three inches and change. And an inch thick. And twelve dollars.

The 37-watt PAR LED floodlight in my kitchen weighs three pounds and some-odd ounces.

THAT is the reason greatly enhanced lumen output excites me, not merely energy usage.

[Kayteg1]

MEXICOWANDERER wrote:
Or 2 amps versus 1 amp for the same amount of light?

I really do think before I post this stuff 🙂

I assume you might live in place with no electricity, so stretching battery life on everyday use is important.
In my RVing I drive at least every 3 days, so get full batteries recharge from the engine.
My coffee maker via inverter takes about 150 amp from my batteries, so even full 1 amp more for lights is not going to worry me.
Manu fact, I did not convert few fluorescent lights in my camper.
That is simply not cost-efficient at this time.

[MEXICOWANDERER]

Or 2 amps versus 1 amp for the same amount of light?

I really do think before I post this stuff 🙂

[Kayteg1]

I did what Roy did for some fixtures, but bought direct replacement LED bulbs for the fixture he is showing.
I learn that you buy the biggest number of LED you can find for that application and I remember my boards have 48 pcs.
When the boards have to be used in some fixtures due to wedge, or tube sockets, I like rounded LED bulbs for overhead lights as they spread the light more evenly.
New technology Mexico is mentioning might sound interesting, but do I really care if my lights use 1 amp , or 0.98 amp?
I think the biggest advantage is LED panel in refrigerator. Not only much more light, but the old tube bulb at 10W did produce noticeable heat.
With those self-stick boards I am thinking about adding 2 more for the fridge and if I figure out a switch, one for freezer as well.

[Chris_Bryant]

I see the COB panels taking off- I got a flashlight using that technology, and man is it ultra bright. The COB tech puts the LED directly on the circuit board for better heat dissipation, plus fits a lot more in a given space.
COB panels look like this: