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Lighting Science Soft White DuraBulb LED

Lighting Science Soft White DuraBulb LED

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A rather interesting concept, somewhat reminiscent of the Cree "4Flow" bulbs Home Depot used to sell. These interesting units feature a plastic outer envelope (and yes, it is slotted, presumably for cooling) with a glass "pane" with LED filament ribbon diodes skirting such, perpendicular to the axis of the lamp. I affectionately think of them as "wiffle balls". They do boast dimmability which is an arguable plus in and of itself.

This design arguably wouldn't do well in wet and/or dirty environments, although they do boast being shatter-resistant, a plus. I might use them in table lamps as a result.

I haven't tried them yet but when I do I will report back. I actually kind of like how they look.

Driver looks simplistic so I'm curious about 60hz flicker or lack thereof although most filament LEDs seem to be fairly flicker free unless they are extremely low power units.

Special thanks to fellow member Icefoglights for these!

IMG_5677.JPG IMG_5358.JPG IMG_5343.JPG IMG_5323.JPG

Light Information

Light Information

Manufacturer:Lighting Science
Model Reference:LSA19DB60WEW271202PK
Lamp
Lamp Type:LED filament
Base:E26
Service Life:10,000 hours
Fixture
Location:College, AK
Electrical
Wattage:7.5
Optical
Lumen Output:700
Color Temperature:2700K
Physical/Production
Factory Location:China, go figure!
Fabrication Date:2010's
Application/Use:Energy saving replacement to 60w incandescent

File information

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Album name:ace100w120v / LEDs
Keywords:Lamps
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Date added:Nov 17, 2018
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dor123
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Nov 17, 2018 at 02:01 AM Author: dor123
LED filaments can only be cooled by an inert gas, so they requires a glass envelope. The air isn't enough to cool LED filament, and I think that the slots on this lamp, won't help to cool the LEDs but only the driver.
Some LED lamps may consists of only a simple series resistor, similar to indicator LED, which may result in a 60hz flickering, or a capacitive driver, which result in a 120hz flickering.

I"m don't speak English well, and rely on online translating to write in this site.
Please forgive me if my choice of my words looks like offensive, while that isn't my intention.

I only working with the European date format (dd.mm.yyyy).

I lives in Israel, which is a 230-240V, 50hz country.

rjluna2
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Robert


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Nov 17, 2018 at 03:15 PM Author: rjluna2
The other enemies of this open concept envelope construction are the dust attraction could lead to overheat the LEDs dies

Pretty, please no more Chinese failure.

ace100w120v
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Feb 23, 2019 at 07:56 PM Author: ace100w120v
Dust, bugs, cooking grease...all those things.

These are now in use in two different places in the house I'm currently living in here. Their light quality is quite yellowish.
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