Can these be used in completely closed ceiling fixtures (most can't)?
1622821
Use just like any other light bulb - they are made to be replacement for a std bulb.
1622822
I'm really not sure, but i don't see why not. Mine are in vanity lighting so the end is opened. I love the light that these put out.
1622823
I don't know they do get very hot at the base that is why they are made out of metal at the bottom to act as a heat sync.
1622824
Hello Patricia. I have an overhead kitchen light fixture that used to eat regular incandescent bulbs in a matter of a few months, then compact fluorescent bulbs also in a matter on a few months. I have two of these LED bulbs and they run much cooler. Be aware that they are not as bright but the glass enclosure does not get hot. I barely even gets warm. My answer is Yes.
229597
I am not sure I used mine for the light fixtures in my ceiling sorry I wasn't much of a help you could probably google it to see if others have used it for that
215062
I use them with enclosed fixtures so far without any issues. However the thing to remember is how they fit dimension wise. My ceiling lights are enclosed and are big enough to accomodate the extra length of the bulb. Also, I have noticed the heat factor is low compared to incandescent bulbs, so in my opinion these bulbs are just fine for enclosed fixtures. Hope this helps
141907
The box states: "do not use where directly exposed to water". It also specifies that they should not be used in a completely enclosed fixture.I am sure you can find an LED replacement bulb someplace that is suitable for your landscape fixtures though.
161705
These won't work with a screw on socket at all. They have a little transformer that has to be hardwired. There is then a little wire coming from the light that plugs into another little wire coming off of the transformer. These lights are great if you need a solution where you only have 1/2" of clearance in your ceiling hole (and you can get inside the ceiling to run the wiring). If you have room for a full on can light system then I would recommend going that route with screw in LEDs.
661809
No, you would have to take the bottom off. There is very little room to maneuver from the opening on the top, nor can you see down into the fixture, since it's so close to the ceiling. That said, most ceiling fixtures are not left on for hours a day, every day. If you use long life bulbs, you're looking at not having to change them for years.
236770
Bulbs by Switch and a few others are rated for fully enclosed fixtures. For whatever it's worth...according to the "EarthLED" web site, this type of Cree bulb (either 40W-equivalent or 60W-equivalent) is not rated for fully enclosed fixtures. I see that some have answered "yes" so maybe it's ok after all. I'll go with the published ratings...
538149
That question is a tricky one. It depends how the manufacturer and what the manufacturer uses to dissipate heat generated at the junction between the circuit board and the LED. In sealed industrial LED applications, the heat sinks are enormous and can tolerate the junction inefficiency. I seriously doubt that residential LED bulbs are designed for that purpose, so I would not recommend using these in a sealed fixture.
1682138
You can use these anywhere you please. Just be sure they get screwed into something solid. Even if used on a ceiling, they need to "bite" into the wood underneath. If you only screw them into the plaster/drywall etc. they will just pull out when a load is applied. Hope this helps.
1213549
NOHowever, they are not water proof and with exposed contacts, could short out. Note that the center for a connection is supposed to be positive but often is not. The lamps will not work unless polarity is correct, they are diodes after all.
880547
We hung them from lights on a ceiling fan and just didn't use the fan. We tied them with slip knots. Hope this helps.
538144
i dont really think it good to place it in a closed fixture. It may gets hotter & hotter and eventually shortens LED lifetime quite a lot.
2142863
The packaging indicates you should not use these bulbs in a completely enclosed fixture. It doesn't say if there are safety concerns, or if the primary concern is decreased bulb life due to heat generation (which is minimal anyway).
397377
haven't had any problems with this. I have them in enclosed globes both ceiling and wall and they do just fine. I think the key is that it not be a sealed fixture. In other words, if air/dust can get into the globe it's probably going to be fine. If the light has a seal / gasket of some sort around it to make it airtight/dust proof, then I wouldn't recommend it. Best LED lights I've purchased so far!
982385
Obviously the bulbs are not meant to get wet but if the bulb is completely sealed I assume these would work OK.
1722638
No. I don't think they would work, because the style of them is so that the pressure from itself holds the item, and it would not work turned up to the ceiling.
451851
I'll say yes, with this caveat: Like any halogen bulb these things get hot and they really should not be used in an enclosed fixture with no airflow or very bad airflow. I put these in a chandelier in my parent's house that really did not have good airflow, just a small opening at the top; and in that situation the lifetime of the bulbs is shortened.