I’ve started to see bulbs like this at stores. It is a halogen bulb in a standard incandescent bulb package.
I assume that these are a product of the “light bulb ban” (aka Energy Independence and Security Act of 2007).
I thought that halogens put out too much heat and therefor could not be used in a standard light fixture? Did something change?
A traditional incandescent bulb also gets hot, so standard light fixtures are designed to keep anything combustible away from the bulb (e.g., the cloth shade in a table lamp).
The globes of halogen lamps do run significantly hotter than conventional glass incandescents. However the lamps linked to are not just halogens - by the simple expedient of keeping the conventional large glass envelope and putting a halogen inside, instead of a conventional filament, the lamp is rendered safe for the same use as conventional lamps. The larger surface area means the lamp will get no hotter than a conventional one. (Indeed, since the halogen is a bit more efficient, there is a smidgen less waste heat, and the lamp will be a tiny fraction cooler than an equivalent conventional lamp with the same light output.)
Bulbs like that have been around a long time - for any use where someone wanted halogen lighting characteristics in a standard fixture. Most incandescent fixtures aren’t protected against the extremely hot glass capsule of a halogen, so they wrap it in a standard bulb - which also serves where the bulbs are visible and part of the lamp design.
The “light bulb ban” simply set efficiency standards that ordinary incandescents can’t meet. A smaller halogen can produce as much light (of a nicer spectrum, too) at lower wattage.
Surely this is all history now - I am moving over to LED as the old lights give up the ghost. Expensive to buy, yes, but they use very little energy, give out no heat and last for ages without fading.
LEDs are not there yet - not there in the sense that they will get much better than they currently are in terms of colour rendition. Current LEDs have pretty poor colour rendition, as they are far from being black body radiators. (Which is why people like halogen lighting). But there is a good chance that progress with quantum dots will yield white LED lighting with very high colour rendition, at which point is probably is game over for competing technology. I’m still hanging back on replacing all my lighting - although I do have some LEDs.
The new Cree TW series are just becoming available nationally and are somewhat OK at color rendering (although they still dim poorly). I’m starting to use them, either the bulbs or the integrated trims in places like the outside can lights, where they should be totally sealed against bugs and water, and the porch light which is on all night.
… CREE means LED… They are on the side track of LED technology.
The question was about the Halogen bulbs… For the same size bulb, the temperature must be related to the ELECTRICAL power put into it.
So you can put a 60 W halogen incandescent in where a 60W indcandescent (not halogen) goes… And get more light from it. Or save power by using a 45 Watt Halogen for the same amount of light.
The smaller bulb may be hotter, so always use the same size bulb. The idea that halogens were hotter comes from comparing a large bulb with a small bulb, when trying to light your rooms.
The envelope of a halogen lamp is much hotter than that of an incandescent “bulb.”
Halogens typically operate at an envelope temperature of greater than 500°F, easily hot enough to start a fire.
These replacements for a 60 watt incandescent are generally marked 60 42 watts on the packet, your buying a 42 watt halogen bulb.