How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

In an old garage, workshop, utility shed or utility room, there is always a nook that lacks light even on the brightest sunny day. Pulling electrical wiring there to connect a light bulb is impractical, both from an organizational and economic point of view, and from fire safety.
There is a very simple, free and safe way to illuminate such dark corners, which has been successfully and widely used for more than 17 years in developing countries in Southeast Asia, Africa and South America.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

To implement it, no special knowledge, sophisticated skills, special tools or any scarce, rarely found materials are required. Every inquisitive person can cope with this work.

Will need


  • Plastic transparent drinks bottle with a volume of 1.5-2 liters;
  • Corrugated or flat galvanized iron sheet;
  • rubber sealant;
  • bleach (or any liquid chlorine-containing product);
  • distilled or filtered water;
  • sandpaper or wire brush;
  • metal scissors;
  • pliers;
  • electric drill;
  • chisel and hammer;
  • cardboard and marker;
  • self-tapping screws, screws, bolts or rivets.

Solar bulb manufacturing process


It consists of several distinct stages.
How to make a solar lamp from a bottle

1. We apply two concentric circles to a sheet of smooth or corrugated iron using pre-prepared cardboard circles (templates), the first of which corresponds to the outer diameter of the bottle at a distance of 1/3 from its neck, the second - 20 mm less.
How to make a solar lamp from a bottle

2. Using a chisel and a hammer, make a three-sided notch deep into the sheet on a smaller circle and bend the resulting “tooth” with pliers. The resulting “window” is needed to use metal scissors and cut out a smaller circle along the previously drawn circle.
3. Using the same metal scissors, we make diametric cuts to the mark of a large circle about 20 mm wide. Slightly straighten the sheet in the area of ​​the notches and use pliers to bend them outward by about 45 degrees.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

4. Using sandpaper or a metal brush, we process the outer perimeter of the bottle in the area of ​​its contact with the notches of the corrugated sheet (this is necessary for better adhesion of the sealant to the surface of the plastic container).
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

5. Apply sealant using a glue gun or simply with a stick around the circumference of the bottle at the point of its contact with the corrugated sheet. We put the sheet on the bottle from the neck to the previously applied adhesive belt. After this, we repeat the application of sealant on top of the sheet along the surface of the notches.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

6. We compact the sealant on both sides and distribute it evenly to create a sealed annular belt. If there is not enough sealing compound in some places, add it with a glue gun.
How to make a solar lamp from a bottle

7. Pour bleach into a plastic bottle at the rate of 2 caps per 1 liter of distilled water.This is necessary so that the water in the bottle does not spoil for a long time (does not bloom). Fill the container with clean water and screw the lid tightly.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

8. Cut a hole in the roof at the planned location for the outer diameter of the bottle using a chisel, hammer and metal scissors.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

9. We insert a bottle of water and bleach into the resulting hole up to the corrugated iron sheet attached to it, having previously degreased the contact area on the roof and covered it with glue.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

10. Apply sealant around the hole.
How to make a solar lamp from a bottle

We make several through holes around the perimeter of the sheet and fasten it to the roof with self-tapping screws, screws or bolts, rivets.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

11. We completely cover the bottle cap with a layer of sealant, which is necessary not only to prevent water evaporation, but also to protect the cap from ultraviolet rays, from which it fades, cracks and, ultimately, crumbles.
How to make a solar lamp from a bottle

Result


How to make a solar lamp from a bottle

Many people are interested in the nature of the glow of a solar bulb from a plastic bottle. This occurs due to the refraction of sunlight in water and the effective dispersion of light inside a dark room. Experiments have shown that the luminosity of a two-liter bottle of water approximately corresponds to a 50 ± 10-watt incandescent light bulb.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

In order for the solar lamp to properly emit light, it is necessary to keep the outer surface of the bottle clean and periodically remove accumulated dust and dirt from it.
How to make a solar lamp from a bottle

How to make a solar lamp from a bottle

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Comments (6)
  1. Guest Andrey
    #1 Guest Andrey Guests April 15, 2019 10:21
    0
    Anyone living in such slums is unlikely to read this article.
  2. Akril
    #2 Akril Guests 15 April 2019 16:06
    3
    Oh my goodness, the sun has gone and the light has gone out, some kind of shaitan..)))
  3. Guest Vitaly
    #3 Guest Vitaly Guests 16 April 2019 08:09
    4
    This will work for the countries of Africa and Southeast Asia, but for Russia with its frosts it will not work.
    1. Akril
      #4 Akril Guests 16 April 2019 09:40
      1
      Yes, it’s only for them; for all other civilized people, the Chinese have mastered LED in all quantities and variants.
    2. Dmitry Spitsyn
      #5 Dmitry Spitsyn Guests 17 April 2019 15:33
      0
      It’s okay, we invented the window. If there is no glass, then you can tighten it with a bullish bubble.
      1. Akril
        #6 Akril Guests 19 April 2019 12:27
        0
        Well, well, if the craftsmen had made a hole in my roof and inserted a bottle filled with silicone, I would have given themfig I would have broken my arms and forced him to buy a roof.