Làm thế nào để chọn được bóng đèn hoàn hảo cho chiếu sáng của bạn - Phần 1
Một bài báo được chúng tôi sưu tầm trên wikihow và đăng tải lại trên Japan Lighting, bài viết:
Japanlighting.com - How to Choose the Perfect Light Bulb for Your Lighting Fixture tạm dịch là: Làm thế nào để chọn được bóng đèn hoàn hảo cho chiếu sáng của bạn
Part 1: Understanding Light Bulb Basics
Phần 1: Hiểu biết cơ bản về bóng đèn
Even though light bulbs are fairly basic in function, there are so many options available that you can easily get lost. Rather than buying the first bulb that 'looks like it will work', take the time to find the perfect bulb for your fixture. You'll not only save money in the long run, you'll end up with the most attractive lighting for your home, and prevent a possible fire from using the wrong option.
- Using a light bulb with wattage above the maximum that the fixture can handle is a major fire hazard.
- You can use a light bulb with wattage less than what your fixture asks for.
- The more lumens, the closer the appearance of the light is to that of natural sunlight.
- Make sure to check the socket type and size of your lighting fixture so that you know what light bulbs you need.
- There are 4 commonly used thread size groups for mains supply lamps: Candelabra - E12 North America, E11 in Europe; Intermediate - E17 North America, E14 (Small ES, SES) in Europe; medium or standard - E26 (MES) in North America, E27 (ES) in Europe; Mogul - Mogul: E39 North America, E40 (Goliath ES) in Europe.
- The number after the E refers to the external diameter of the light bulb's thread in millimeters. For example, E27 means that the external diameter of the thread is 27 millimeters.
- Incandescent bulbs generally have the shortest life expectancy.
- Halogen bulbs are cheap upgrades over traditional incandescent bulbs, having improved efficiency and lifespan with only a small increase in price.
- Compact fluorescent bulbs have a lifespan that is several times better than an incandescent light bulb but the lifespan is reduced significantly if the bulb is switched on and off frequently.
- LED bulbs have arguably the longest lifespan of all light bulbs, several times better than an incandescent light bulb and significantly better than most fluorescent bulbs. Manufacturers are giving long warranties to confirm the long lifespan of LED bulbs, typically 15,000 hours (15 years at 3 hours/day), and to support 50,000 switch cycles.
- Light appearance is measured in temperature using the Kelvin scale. Color temperatures in the range 2700K–3000K are considered "warm white". 3500K-4500K would be "neutral white", sometimes called "bright white", over 5000K would be "cool white" or "daylight". (These names are approximate descriptions. Lower color temperatures are warmer/yellower; higher temperatures are cooler/bluer).