High power LED Desk Lamp / Goose neck lamp

This might be a little too detailed, but if you're like me (for better or worse) that might be exactly what you want-2, 3 watt LEDs mounted on 3, 1/4" aluminum disks. First disk screwed into two disks held together by JB-weld (with thermal paste sandwiched in between each disk) for accessibility(i.e. for bringing the LEDs outside the lamp head). The last two disks, the ones glued together, are mounted to a threaded piece of PVC (male) by JB weld which is fixed to the inside of the lamp head, also by JB weld. As yall can see I cut the lamp head into two pieces. Being that I cannot stick my hand through an aluminum disk, I had to create a port of entry behind it so that I could access the electronics(i.e. some constant current drivers I mounted on a circuit board connected up to the switch connected to the mains), hence cutting the head into two pieces. As you can also see from the video, a threaded, female piece of PVC is glued into the back piece so that I can attach it to the front piece. This is then attached to the already existing mount for the entire lamp head. Given the length of the conduit, it was not strong enough to hold up the lamp head, mainly because it has a fatty heat sink. The aluminum pipe reduces that length. So you have much less torque and therefore force on the end of the conduit, which means you don't get extreme droop. This pipe is held within two 1/2" thick aluminum disks which simply ensures that the base counterbalances the head. (Oh and if you were to buy everything I have here new, you would probably be forking out at least $60. Luckily, I have access to free scrap metal, which is where the bulk of the cost would go.)
BOM
Lamp before retrofit-$11
Aluminum-Free
Access to Machine shop-Free
LEDs: 2($2.20)
Drivers: 2($1.50)
JB Weld: $4
Thermal Compound:$4
Wire:Free
Solder:Free
Total: $26.40

Category:

Science & Technology

Tags:

• High
• Power
• high
• power
• LED
• retrofit
• desk
• lamp
• goose
• neck
• led
• LEDs
• leds
• electronics