It is currently Thu Mar 28, 2024 1:27 pm

All times are UTC






Post new topic Reply to topic  [ 24 posts ] 


Author Message
 Post subject: Re: Induction lamps
PostPosted: Sat Jun 21, 2014 2:27 pm 
Offline
Member
User avatar

Joined: Thu Nov 12, 2009 8:46 pm
Posts: 540
Images: 11
Location: Colchester, Essex
Phosco152 wrote:
Elsewhere in Bedfordshire, columns that did have MA50s on them now also sport new induction lanterns, and close up.

Funnily enough I've also seen one or two induction lanterns in Dunstable, but the ones I saw were only mounted at 8 metres.

Sadly I have no day photos, as the lantern didn't look out of place until night time fell, but I did manage to grab a couple of (hand-held, believe it or not) night photos of one of the lanterns:

Image
A close-up of an induction lantern in St Mary's Gate, Dunstable. Photograph taken in December 2012.

Notably, the induction lamp in this lantern is shorter than the one photographed by Phosco152, perhaps to take account of the lower mounting height.

Image
The induction lantern in context with a SON lantern on the B489 West Street in the background. Photograph taken in December 2012.

Noting how rare examples of induction street lighting are, I purchased one on Ebay a while back to add to the collection, and for quite a lot less than Ebay's current crop of induction street lanterns.

Image
This unbadged lantern has the prosaic appearance of a modern SON lantern, and may even be a retrofit. These photographs were taken in June 2014.

Image
The enclosed 80W induction lamp itself takes on the appearance of a beefy circular fluorescent tube. The lantern is internally geared with the electronic ballast hidden inside the canopy.

Image
The lamp does kick out a good, strong white light, perhaps about 50% brighter than the equivalent 80W high pressure mercury lamp.

The shape of induction lamps however, makes it difficult to optically control their light output. When coupled with their average luminous efficiency, this may explain the lack of popularity of induction street lanterns on Britain's roads compared to other available white light sources.


Last edited by David on Mon Oct 09, 2017 10:32 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Induction lamps
PostPosted: Sat Jun 21, 2014 5:15 pm 
Offline
Site Administration
User avatar

Joined: Mon Nov 09, 2009 5:38 pm
Posts: 3402
Images: 27
Location: Salisbury
As ever cracking pics David.

Your night time shot shows there must be another variant in use to the lantern I pictured. Whilst the finned sections look similar, the bowl aperture isn't quite the same shape.

The light also appears to be of a cooler colour temperature than your own example. Also I hadn't seen circular lamps like that before - they always seemed to be of the square type.


Top
 Profile  Personal album 
 
 Post subject: Re: Induction lamps
PostPosted: Fri Apr 10, 2015 6:48 pm 
Offline
Formerly Paspie
User avatar

Joined: Sun Feb 05, 2012 2:29 pm
Posts: 114
David wrote:
Image
Pardon the thread bump but having looked on GSV and studied some of the induction lanterns available, I think the one in the pic may be the one featured here, the RD09 from Indo Lighting.


Last edited by Paianni on Fri Apr 10, 2015 8:33 pm, edited 1 time in total.

Top
 Profile  
 
 Post subject: Re: Induction lamps
PostPosted: Fri Apr 10, 2015 8:18 pm 
Offline
Formerly Paspie
User avatar

Joined: Sun Feb 05, 2012 2:29 pm
Posts: 114
The GSV link for David's lantern is here.


Top
 Profile  
 

Display posts from previous:  Sort by  


Post new topic Reply to topic  [ 24 posts ] 

All times are UTC



You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Jump to:  

Who is online

Users browsing this forum: No registered users and 12 guests



Search for:

cron