The difference between cold light source and heat source

Cold light source: A cold light source is a light source (firefly, neon, LED, etc.) that is excited by chemical energy, electrical energy, or biological energy. Has a very good optical, flashing characteristics. When an object emits light, its temperature is not higher than the ambient temperature. This kind of illumination is called a cold light source. For example, an LED uses a combination of electron-hole pairs to emit light. Strictly speaking, LED light-emitting diodes are electroluminescence and heat generation, but they are lower than light sources such as incandescent lamps. The LED electro-optical conversion efficiency is about 30%, of which the internal quantum efficiency is about 70% (close to the theoretical limit), and the external quantum efficiency is about 50%. (This is just experimental data, not an exact value)

Thermal light source: A light source that is excited by thermal energy, such as an incandescent lamp that emits heat at a temperature of 3,000-4,000 K. Incandescent lamps have 80-90% energy conversion energy, and about 10% energy is converted into light energy. Therefore, the luminous efficiency is low. We are not defined as a cold light source or a thermal light source depending on the temperature of the lamp housing.

Christmas light

Are you still looking for that little something extra to liven up your living room and party decorations? Offering a fun way to feature photos at birthdays, Christmas, weddings, parties and retirement celebrations, these string lights work well with many decor types including dorm rooms, bedrooms, and living areas, adding that special glow for homemade crafts and decorations. Whatever creative vision you have, they will surely be a great fit and brighten the mood wherever they are. They are the perfect cost and energy efficient solution to all of your home dcor desires. Elevate your entertainer status and be the talk of the town at your next event with these one of a kind photo clip Led String Lights.

Product Feartures:

1.)High Quality & Energy Efficient:The tube lights is IP65 Waterproof, dustproof; transparent PC material, corrosion resistant, cost resistant, aging resistant, more durable; free from time and space constraints. Low power consumption and energy saving.

2.) Meteor Shower Effect with Romantic Aesthetic: Led meteor shower lights, the light of every bulb turns on and out one by one in sequence and quickly just like meteor shower or falling snow in the night sky, multi-colored, very beautiful. It can be used as one, or be connected (as much as five string lights).

3.) Package Content: 1 x LED Meteor Shower Light

Led Icicle Light

Led Icicle Lights,Led Icicle Christmas Lights,White Led Icicle Lights,Led Ice Cycle Lights

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