Return to the thumbnail page Display/hide file information See previous file See next file

Cheap emergency light

Cheap emergency light

Click to view full size image

This light has nothing but a small cluster of 5mm LEDs in each "eye". Probably not very effective in a power outage.

SAM_1310.JPG SAM_1284.JPG SAM_1274.JPG SAM_1263.JPG

Light Information

Light Information

Lamp
Lamp Type:5mm LED
Shape/Finish:5mm LED
Fixture
Fixture Type:Emergency light
Physical/Production
Application/Use:"Emergency" lighting

File information

File information

Download: Download this File
Filename:SAM_1274.JPG
Album name:Lumex120 / Other
Keywords:Miscellaneous
File Size:301 KB
Date added:Sep 26, 2015
Dimensions:2465 x 1848 pixels
Displayed:99 times
URL:https://www.lighting-gallery.net/gallery/displayimage.php?pos=-112048
Favorites:Add to Favorites
Comments
streetlight98
Sr. Member
****
Offline

Gender: Male
Posts: 323
View Gallery

Mike McCann


GoL 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Sep 26, 2015 at 07:59 PM Author: streetlight98
I find emergency lights are not that effective period lol. Most of the ones at my school don't even work. You'd think with LEDs, they'd use the same wattage of LEDs as they would with the halogens so there'd be more light since the output from a typical emergency light is miserable.

To resist is to piss in the wind, anyone who does will end up smelling.

Mercurylamps
Hero Member
*****
Offline

Gender: Male
Posts: 530
View Gallery

240V 50Hz


View Profile Personal Message (Offline)
Sep 26, 2015 at 08:40 PM Author: Mercurylamps
Funny you mention that Mike, I am fairly handy with electronics and I decided to make a home made emergency light that charges and maintains a trickle charge on a 12v sealed lead acid battery and a relay would change over battery connections to a 12v 2x T58W fluorescent fitting. I tested the fitting regularly by unplugging it from the wall socket.

It worked everytime, that is until we had a real power cut. For some reason when the power went off, the 12v fluorescent fitting went BANG! and fried it's circuitry as well as blowing the 3 amp fuse I installed on the positive terminal of the battery. The fluorescent fitting I used was a cheap Chinese unit, probably poorly built.
streetlight98
Sr. Member
****
Offline

Gender: Male
Posts: 323
View Gallery

Mike McCann


GoL 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Sep 27, 2015 at 06:21 AM Author: streetlight98
Hmm that's really strange. Could there have been a power surge or something? Seems really odd that it would work fine if manually disconnected but not work when naturally disconnected?

To resist is to piss in the wind, anyone who does will end up smelling.

Mercurylamps
Hero Member
*****
Offline

Gender: Male
Posts: 530
View Gallery

240V 50Hz


View Profile Personal Message (Offline)
Sep 27, 2015 at 06:30 AM Author: Mercurylamps
Well I designed the circuit so that the light would come on after a 10 second time delay, and the 12v fluorescent fitting is completely isolated from the rest of the circuitry by a relay that is energised while there is a power supply. What had happened was the power cut, then after ten seconds when the relay changed over the fluorescent inverter board fried itself blowing a transister as well as the fuse on the battery. I put it down to a poor quality Chinese 12v 2x T58W fitting that didn't like being powered for short periods of time (for testing purposes). Perhaps I'd have better luck with an LED strip. I should dig it out, it's in the garage somewhere collecting dust.

It was a fun little project a few years back I have to admit.
Ash
Hero Member
*****
Offline

Posts: 3618
View Gallery


View Profile Personal Message (Offline)
Sep 27, 2015 at 07:22 AM Author: Ash
When you unplug it you disconnected the Earthing too. This time you have not. Maybe some weird circuit happened through the PE such as - Battery - terminal - Charger - Mains Earth - Lantern body - HF ballast body - tab in some transistor connected to it for heatsinking

My eemrgency lights are plain Fluorescents connected to computer UPS unit
Mercurylamps
Hero Member
*****
Offline

Gender: Male
Posts: 530
View Gallery

240V 50Hz


View Profile Personal Message (Offline)
Sep 28, 2015 at 12:10 AM Author: Mercurylamps
Ash, there was no physical earth connected to the fluorescent fitting. It's just a cheap one designed to run off a 12v source, with positive and negative terminals. I think it was just poor design but I may have to dig it out if I can find it. If I remember the transisters were in a TO92 casing.
lightinglover8902
Hero Member
*****
Offline

Gender: Male
Posts: 521
View Gallery

Power distributor: CenterPoint Energy. 120V 60Hz


GoL UCP_yo1gHzReqS19MjJMXUKg
View Profile Personal Message (Offline)
Dec 29, 2015 at 10:45 AM Author: lightinglover8902
I seen one in Lowe's on their shelves, new in boxes. But they cost $39 dollars to get one.

streetlight98
Sr. Member
****
Offline

Gender: Male
Posts: 323
View Gallery

Mike McCann


GoL 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Dec 29, 2015 at 11:39 AM Author: streetlight98
I have two emergency lights (NOS from the 1990s) made by Cooper Sure-Lites but I need batteries for them. I don't know what kind of batteries I need.

To resist is to piss in the wind, anyone who does will end up smelling.

lightinglover8902
Hero Member
*****
Offline

Gender: Male
Posts: 521
View Gallery

Power distributor: CenterPoint Energy. 120V 60Hz


GoL UCP_yo1gHzReqS19MjJMXUKg
View Profile Personal Message (Offline)
Dec 29, 2015 at 11:41 AM Author: lightinglover8902
Hmm, what voltage output do they take?

streetlight98
Sr. Member
****
Offline

Gender: Male
Posts: 323
View Gallery

Mike McCann


GoL 88219189@N04/albums
View Profile WWW Personal Message (Offline)
Dec 29, 2015 at 11:47 AM Author: streetlight98
6V. It requires four batteries. 10AH I think? But I don't know if that's combined or per battery. I would have assumed that the batteries came with it. And IDK if they have to be Sure-Lites batteries or if I can use any battery with that rating. It also allows for "remote heads" to be linked too, which is cool. I don't plan to use them for the time being anyway but will be cool to hang them up in my basement when I get my own place. Maybe I'll even get LED remote heads for them at some point.

To resist is to piss in the wind, anyone who does will end up smelling.

lightinglover8902
Hero Member
*****
Offline

Gender: Male
Posts: 521
View Gallery

Power distributor: CenterPoint Energy. 120V 60Hz


GoL UCP_yo1gHzReqS19MjJMXUKg
View Profile Personal Message (Offline)
Dec 29, 2015 at 11:48 AM Author: lightinglover8902
Ok, by the way, I might get a emergency light soon.

Medved
Hero Member
*****
Offline

Gender: Male
Posts: 4149
View Gallery

View Profile Personal Message (Offline)
Dec 29, 2015 at 01:52 PM Author: Medved
@The emergency lighting power: These things are lways designed towards the required lumen output and minimum run time required by the relevant safety standard. So if that means an 10W incandescent on a 6V/5Ah battery, that will be in the fixture.
If some new technology (e.g. F8T5 fluorescent) the same output with just 4W power input, the replacement fixture will use the F8T5 operated at only 4W with only a 6V/2Ah battery.
If a LED offers the same with just 1W input, it will most likely use that 1W LED powered from three 1Ah NiCd or NiMH cells (probably some 2/3SC size or so), probably this case.
You will never find any replacement offering higher output or longer run time, the replacement will be only smaller, lighter and/or cheaper than the incandescent original.

No more selfballasted c***

© 2005-2019 Lighting-Gallery.net | Powered by: Coppermine Photo Gallery