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Thread: Hitachi Appliances to Release 80 W-equivalent LED Bulb

  1. #1
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    Default Hitachi Appliances to Release 80 W-equivalent LED Bulb

    http://www.ledinside.com/hitachi_app..._bulb_20120523

    Hitachi Appliances is to release 80 W-equivalent LED bulb on June 15th.

    The new bulb gives off almost 1160 lumens, and consumes 11.4 watts. It can be available in E26-base, and diffuses light like the incandescent light bulb. With the new bulb, it can not only improve the brightness, but also reduce power consumption.

    SL
    A quick search on the Net did not yield any details on color temp or retail price.

  2. #2

    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    I know Philips is selling a 75W bulb at Home Depot. Switch, Osram and GE have all anounced similar products release soon.
    But, why should I buy a 80W bulb than a 75W one?

  3. #3
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    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    Quote Originally Posted by BM_lol View Post
    I know Philips is selling a 75W bulb at Home Depot. Switch, Osram and GE have all anounced similar products release soon.
    But, why should I buy a 80W bulb than a 75W one?
    Because the efficacy is over 100 lumens per watt?

  4. #4

    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    Quote Originally Posted by slebans View Post
    Because the efficacy is over 100 lumens per watt?
    I'm interested in its technology (direct white/red + blue/cool white + lower CRI) and bulb price to achieve >100 lumen per watt.

  5. #5
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    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    Don't expect to see these in North America anytime soon.

    There was a thread about a Toshiba E-core bulb in Japan. It is basically, 8.7 watts and outputs 810 lumens. That is 93 lm/W.

    The US version is showing 7.8 watts and outputs only 350 lumens. That is only 44.9 lm/W.

    An LED light bulb designer explained the reason:
    Quote Originally Posted by sendjerry View Post
    There are few differences between these 2 models
    1. The model with high efficacy only sold in Japanese market where there is no safety codes required, maybe soon in the future but not now. The models sold in US market must pass the safety codes of FCC or UL. In order to pass the safety requirement, there are some components in the model for Japanese market must be replaced but that makes power efficacy drop. That 810lm@8.7W model has EMS issue and its power factor is only around 0.6. I am a LED light bulb designer. We have the same problem. In order to pass the safety codes like FCC or CE (for European market), we have to push the power consumption to 10 watts to generate 800 lm but it passes the FCC and CE. This is why the efficacy is so different in these two models.
    2. Another difference between these 2 models is that the 810lm@ 8.7W model uses COB type emitters (66 small emitters) and the one with is SMT type (7 large emitters). Heat dissipation is easier for COB type.
    3. The body of the model is larger and heavier. It weights 160g instead of 135. Its heat sink is big and more powerful to dissipate heat which also makes the power efficacy higher.
    http://www.candlepowerforums.com/vb/...=1#post3427218

  6. #6

    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    It's the bulb's data sheet.
    71 lm/w in warm color is not bad...

    http://www.hitachi.co.jp/New/cnews/m...12/05/0511.pdf

  7. #7
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    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    Quote Originally Posted by patrickhuang View Post
    It's the bulb's data sheet.
    71 lm/w in warm color is not bad...

    http://www.hitachi.co.jp/New/cnews/m...12/05/0511.pdf
    Thanks for posting that link, Patrick. Would you be able to translate the Color Temp values for both bulbs spec'd in the Datasheet?

    60 Watt equivalent:
    11.4 watts
    810 lumens
    71 lumens per watt

    80 Watt equivalent:
    11.4 watts
    1160 lumens
    101 lumens per watt

    Thanks!

  8. #8

    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    There are no CCT values in the datasheet , It just said 電球色(warm color) and 昼光色(cold color), but in general, warm color value in Japan is 2700K, and cold color is 5000K.

  9. #9

    Default Re: Hitachi Appliances to Release 80 W-equivalent LED Bulb

    71 lm/w in warm color is not bad...
    Only if the color stays consistent.

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