The Philips Dubai lamp

3 posts / 0 new
Last post
Last seen: 1 hour 15 min ago
Joined: 04/21/2018 - 11:29
Posts: 421
Location: Europe
The Philips Dubai lamp

What’s up with these lamps?
Are they really that good? They say Dubai 3W shines like 60W Rest of the world

Last seen: 5 hours 25 min ago
Joined: 06/22/2018 - 09:18
Posts: 1036
Location: USA

First of all, a 60W equivalent lamp should produce 800 lumens. I expected better from Philips than to advertise a 600 lumen lamp as 60W equivalent. The true equivalent would be a 4W lamp.

I’ve seen 7.5W, 800 lumen lamps in the US for a few years.

Philips claimed over 7 years ago they had achieved 200lm/W at the lamp level (what we would call “out the front”) and would have a product on the market by 2015.

Regardless, 200 lumens per Watt is possible with the best LED’s currently available, especially when underdriven, which means using more emitters per lamp. I don’t know Philips lineup, but Virence was recently raving about the efficiency of the Nichia N757h-F1, which he was offering in his store. The 80 CRI rank is rated at as high 242lm/W at the emitter level.

So this kind of efficiency is definitely possible if the market wants it. The tradeoffs are higher cost, higher CCT’s and lower to medium CRI if you want the best efficiency, and a need to use very high efficiency drivers that so far have poor power factors and no dimming.

Last seen: 2 weeks 2 days ago
Joined: 10/04/2012 - 17:32
Posts: 84

The video explains it pretty well. These are better built versions of their globally available bulbs. They aren’t made to look better, just to last longer and be efficient. There are probably better CRI options you can buy for the same price as importing those. I like bigClives video. I think the Dubai project didn’t consider CRI, it would have been great if they did.

One takeaway, the company making the product looks to sales for profits. Here they limited the product to a government who paid for a product that wouldn’t need replacing as often and factored that into the price. The waste or landfill generation isn’t really factored into to how most manufacturers stay in business. Dubai could factor in the cost of its landfills, utility grid, and agreement with Philips.