[Nhcoll-l] [EXTERN] Re: LED lights in collections

[Angela Hornsby]

Thanks for the input and resources, everyone.  This is really helpful,
especially the CCI bulletin which I had not run across yet!

Angela

--
Angela Hornsby, Ph.D. (she)
Zoological Collections Manager (MMNH / JFBM)
Bell Museum
University of Minnesota
https://www.bellmuseum.umn.edu/zoological-collections/



On Thu, Jan 23, 2025 at 2:31 PM Dirk Neumann <d.neumann at leibniz-lib.de>
wrote:

> .. depending on the quality of the LED bulbs, they can be a great
> opportunity to significantly reduce UV-emissions and UV-induced damage,
> e.g. compared to old neon lights. But not all are.
>
> Also, retrofitting old neon light sockets with modern LED bulbs however
> may create problems and should be considered with great care, because old
> and especially historic ballast units may fail and even start burning.
>
> This is also mentioned in the CCI Technical Bulleting Dee just shared
> (thanks for sharing!)
>
> All the best
> Dirk
>
>
>
>
> Am 23.01.2025 um 19:38 schrieb Callomon,Paul:
>
> Changing to LEDs makes sense in many ways. They consume a fraction of the
> energy used by incandescent or even fluorescent bulbs, and do not get
> anywhere near as hot. Both factors reduce stress on older light fixtures
> and thus the danger of sparking. They do not have ballasts, unlike
> fluorescents, and are a straight swap-out.
>
>
>
> The only possible issue is that their color temperature tends to be higher
> than that of incandescents. Some LED bulbs can be configured to “cool” or
> “warm” modes with a switch, but most are set at the factory. Cool LEDs can
> change the visual perception of colors in exhibits and shared spaces,
> though that can also be good – many dioramas and specimen displays look
> better with higher color temperature lighting, and up to now that has often
> been achieved with halogen bulbs that get very hot indeed and eat a lot of
> power.
>
>
>
> One caveat is that the optimistic durability figures many makers give –
> “lasts seven years!” are just that, optimistic. These bulbs are almost all
> made in China and to keep the price down, the QC is not all it might be.
> I’ve had them fail or start flickering (which can’t be fixed) in less than
> a year in some cases.
>
>
>
>
>
> *Paul Callomon*
> *Collection Manager, Malacology and General Invertebrates*
> ------------------------------
>
> *Academy of Natural Sciences of Drexel University, Philadelphia*
> *callomon at ansp.org <callomon at ansp.org> Tel 215-405-5096 - Fax 215-299-1170*
>
>
>
>
>
> *From:* Nhcoll-l <nhcoll-l-bounces at mailman.yale.edu>
> <nhcoll-l-bounces at mailman.yale.edu> *On Behalf Of *Angela Hornsby
> *Sent:* Thursday, January 23, 2025 1:29 PM
> *To:* nhcoll-l at mailman.yale.edu
> *Subject:* [Nhcoll-l] LED lights in collections
>
>
>
> *External.*
>
> Hi everyone,
>
>
>
> Our campus facilities management would like to change all of our general
> lighting in non-public collections spaces (dry and wet) to LEDs.  I haven't
> found any sources suggesting major negatives (e.g.,
> https://www.nps.gov/museum/publications/mhi/chap4.pdf).
>
>
>
> Does anyone have experience with the change to LEDs, particularly any
> unanticipated effects?
>
>
>
> Thanks,
>
>
>
> Angela
>
>
>
> --
>
> Angela Hornsby, Ph.D. (she)
>
> Zoological Collections Manager (MMNH / JFBM)
>
> Bell Museum
>
> University of Minnesota
>
> https://www.bellmuseum.umn.edu/zoological-collections/
>
>
>
> _______________________________________________
> Nhcoll-l mailing listNhcoll-l at mailman.yale.eduhttps://mailman.yale.edu/mailman/listinfo/nhcoll-l
>
> _______________________________________________
> NHCOLL-L is brought to you by the Society for the Preservation of
> Natural History Collections (SPNHC), an international society whose
> mission is to improve the preservation, conservation and management of
> natural history collections to ensure their continuing value to
> society. See http://www.spnhc.org for membership information.
> Advertising on NH-COLL-L is inappropriate.
>
>
> --
>
> ******
>
>
>
> *Dirk Neumann*
>
> Collection Manager, Hamburg
>
>
>
> Postal address:
>
> *Museum of Nature Hamburg*
> Leibniz Institute for the Analysis
>
> of Biodiversity Change
>
> Dirk Neumann
>
> Martin-Luther-King-Platz 3
>
> 20146 Hamburg
> +49 40 238 317 – 628
>
> *d.neumann at leibniz-lib.de <d.neumann at leibniz-lib.de>*
>
> www.leibniz-lib.de
>
>
>
> --
> Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
> Postanschrift: Adenauerallee 127, 53113 Bonn, Germany
>
> Stiftung des öffentlichen Rechts;
> Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian
> Grüter (Kaufm. Geschäftsführer)
> Sitz der Stiftung: Adenauerallee 160 in Bonn
> Vorsitzender des Stiftungsrates: Dr. Michael Wappelhorst
>
>
> --
> Stiftung Leibniz-Institut zur Analyse des Biodiversitätswandels
> Postanschrift: Adenauerallee 127, 53113 Bonn, Germany
>
> Stiftung des öffentlichen Rechts;
> Generaldirektion: Prof. Dr. Bernhard Misof (Generaldirektor), Adrian
> Grüter (Kaufm. Geschäftsführer)
> Sitz der Stiftung: Adenauerallee 160 in Bonn
> Vorsitzender des Stiftungsrates: Dr. Michael Wappelhorst
> _______________________________________________
> Nhcoll-l mailing list
> Nhcoll-l at mailman.yale.edu
> https://mailman.yale.edu/mailman/listinfo/nhcoll-l
>
> _______________________________________________
> NHCOLL-L is brought to you by the Society for the Preservation of
> Natural History Collections (SPNHC), an international society whose
> mission is to improve the preservation, conservation and management of
> natural history collections to ensure their continuing value to
> society. See http://www.spnhc.org for membership information.
> Advertising on NH-COLL-L is inappropriate.
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mailman.yale.edu/pipermail/nhcoll-l/attachments/20250123/db2ecffd/attachment.html>