Temperature of LED Bulbs
bbstx
4 years ago
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bbstx
4 years agoRelated Discussions
Please help to decide: Daylight or soft white
Comments (8)I went to Home Depot and saw the bright white, I think it might be 3200 - 3500. I am trying to go more economical route by going for HD ecosmart integrated with trim. I am also thinking about buying trim and CFL bulb, then buy the right color temperature once led bulbs are cheaper. Is Anyone going this route?...See Moreled fixtures versus led bulbs
Comments (48)Several comments 1. The typical operating temperature for Led diodes is much wider i.e. most should operate between -40 to +140 degrees celsius. Real example The max junction temperature for a Cree XM-L Led diode is ~ 150 celsius or 50 above the boiling point of water. 2. There is a wide selection of LED diodes on the market with a wide range of color, efficiencies, current drive, voltage, ... 3. A LED lamp's longevity is affected by how the lamp/ fixture designer design decisions for example- i. Over driving the current at the expense of lifespan. ii. Which LED components to use - more efficient vs greater max output vs cheaper (given the anticipated production run), ... iii. The quality of the other necessary components - capacitors, resistors, ... iv. The quality of the manufacturing process. SMT (surface mount technology) consistently beats the quality of manual soldering and individual wires. 4. Active cooling (i.e. - fan) is no longer used - not effective or cost efficient, prone to failure and reduces the overall efficiency. The use of the motherboard as a heat sink/ spreader is preferred. The Switch lightbulb utilizes an inert liquid and convection circulation to sink the heat produced. 5. The pricing will drop more when the the LED diode costs are reduced as well as when lighting device designers figure out how to reduce the BOM (bill of materials) cost and simplify the manufacturing process. FWIW, the L prize bulb is not competitive with the Cree bulb (or even the newer Philips LED bulbs) from both a manufacturing and end user consumer standpoint. 6. From an electrical standpoint, the E26 connector is no less efficient than a GU24/ bi-pin connector / wire nuts. 7. The more advanced LED deployments today are done in aircraft, automotive and custom home designs where cost is less of a concern. 8. For the rest, it will take a while before more and better fixtures/ lamps designed with LEDs in mind appear since most folks are used to the traditional glass forms ( bulb, tubes)....See Morewhat temperature are your led ucls?
Comments (15)5000K is close to "daylight". 6000K is going to come across as quite blue. 2700-3000K is considered a "warm white" and is close to what we are used to in our homes with incandescent lighting. One of the things that is interesting is that LEDs don't become significantly yellower when dimmed (if you are doing so) like what incandescent does. Our lighting will be a mix of temperatures - all toward the "warm white" to slightly neutral end of things. We have the Ecosmart (Cree) 4" can lights installed - those are 2700K. Our UC lighting will be 3000K. And our pendants are at 3300K. Our UC and pendants aren't installed yet, but I do expect that the pendant lights will read a bit "cooler" than the rest of our lights. Personally, at night, I like lights a little on the warm side - it seems cozier. And I'm perfectly fine with my kitchen having a different look in the day as opposed to night. Also, I will say that it was interesting going from having the 65 watt incandescents in the recessed lighting and then putting in the Ecosmart 4" (also rated as being "about the same as 65 watt"...the room is SO much brighter...extremely glad that we will have our dimmers. Over time, LEDs do fade a bit, so in my estimation, it's better to be too bright and turn them back than too dark and wishing for more light. Also, as we get older, we need more light to see, so that was another consideration as well when we are possibly "overlighting"....See MoreXpost-LED Temperature in Various Spots of Kitchen
Comments (10)I think you should do the same LED temps throughout the kitchen. I don't know if 300k will make a difference. My installation is the 2700k, the cool option would have been 5000k in my brand which is noticeable to me. For me the colors of LED's have a different look compared to incandescent or CFL's. I have a brand called Diode LED. I chose them when I saw a nice display at my electrical wholesaler/retailer. This company also has an online retail business called Elemental LED. When I talked with Elemental LED about this very question, they recommended staying with the warm white. The fellow I talked with said he had warm white throughout his house. He said the cooler white is better for retail displays/stores. So I went with the all warm white (2700k)....See Morebbstx
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