We just got some of these bulbs. We found them terribly hot to touch (bottom) after 2 hours of use. Is it normal? Arn't they supposed to be cold?
70135
I did not get to use mine in the pot-lights I wanted to used it in, because they were too wide for the fixture, so I did not experience this. I would keep a close eye on this problem and not use them for extended times.
70136
Mine stay very cool. I have a fairly recently in stalled wall switch. I don't know if that makes a difference.
70137
probably not.. depends upon the design of the bulb and the fixture they are being used in. I am using them in the bathroom in an overhead fixture, where they are seldom on for more than 30 &gt; 60 minutes, and would not know how warm they get as they are out of my normal reach. However, the heat sink on most LED bulbs I have dealt with does become quite warm (to the point where you can not unscrew them without a glove or something) after being on for a while. So, i would say any "120 vac house lighting" bulb would not be cold after 2 hrs, as they are pushing a lot of power thru the LED's (to get the maximum brightness) and need to dump the excess heat into the heat sink (which is why they have the big heat sinks and say do not use them in totally enclosed fixtures where the heat can't get out).
70138
The bulb is effectively 3 parts. The top part (the glass section) is where the emitters are (1100 lumens is very achievable with one emitter, but this design probably uses multiple). If this gets too hot to touch, that's bad. The second section (with the fancy fluting, and which should be metal) is the heatsink. It is perfectly normal for this section to become too hot to touch during normal operation. The third, very bottom section (smooth plastic) should not be getting too warm to touch during normal use, as this is where all the fancy electronics sit.
70139
We have twelve of them in our kitchen and they get too warm to touch after being on for awhile.
1780982
Anthony, I'm a bit slow on installing these, I bought 8 fixtures last year and another 2 recently. T8 fixtures are supposed to work well in low temperatures (20 F) so I'm trusting the liturature I read and what I've heard from coworkers enought to buy 10 of these fixtures. Sorry I don't yet have first hand experience.
1932821
No, they are Compact Fluorescent Lighbulbs, similar to the ones you have in your home. Those don't get hot at all. They are not incandescent lights.
1326459
I have no idea, I put them in a line of lights on my ceiling. They are not as bright as the ones I took out and I don't think they are hot.
815063
No! The LED units, while not cool during operation, is no where near as hot as the halogen bulbs that I replaced.
1840995
Yes, indeed! They DO GET hot! Don't touch. But they don't emit heat like incandescent bulbs do: ie they are cooler in that regard.
1952857
I'm using them outside in a fixture that has a vented top & solid sides. They replaced incandenscents that worked OK and after a couple months seem to be doing fine. I'm in a warm & humid climate; can't speak to what would happen if very cold.
1863331
The bulb itself is a little hot to the touch if held for a few seconds but it's not as hot as a typical light bulb. With the shade on heat can barely be felt on the outside of the shade.
649545
The ic rating is usually only concidered a factor when using incandescent bulbs.....because they emit a lot more watts = heat. These LEDs don't get hot at all! I left them on for many hours, after the initial install, and checked to see how hot they were and they were still slightly above room temperature.
1925385
You really can't tell they give off any heat at all, I've never noticed them to be excessively warm. You can use an LED instead but I have yet to find an LED that doesn't really stick out in that lightbulb design, the LEDs have a lot of plastic in their design as opposed to the halogens that have a sleek, metal look to them.
1004529
I know from my own use that the "bulb" doesn't get too hot to touch, but the ceramic base of it does get hot. Personally, I wouldn't put one in a fully enclosed lighting fixture for that reason. It IS a great light bulb, however. Wonderful lighting in my desk lamp.
34864
Sorry, I can't answer since I did not order my bulbs until sometime in mid April 2014. they have worked GREAT since then, but no really cold weather.
785286
I did not see a "color temperature" rating, but the bulbs are fairly close to the "white light" from older incandescent bulbs. I think you wouldhave to check with the manufacturer for more detail than that. Sorry.
252125
They are LEDs so you shouldn't have a problem. I didn't notice them getting all that hot. Granted, I haven't left them on for hours at a time and then tested.
106993
They are rated for -40c if you look at there specifications , most LED fixture like the cold better than excessive heat.
1467941
salam,first of all the bulbs will damage in 5 minutes so you have to buy new bulbs then if you use it continuous for 3-4 ours the base will melt.this is what happened with me
2263187
The color is bright white (really neither blue or yellow) and I'm not sure about temp. I don't feel any heat when the lights are on. We put them on a dimmer so we can adjust according to our needs. They are very bright which might be a concern for some.