电子驱动提高零售照明效率

电子驱动提高零售照明效率

　　在零售、招待和许多商业设施照明方面，美学考虑占主导地位。然而，各国政府越来越关注零售环境中的能源消耗问题。照明占能源成本的很大一部分，因为商店需要在整个营业时间保持照明。组织如加利福尼亚能源委员会已经起草了建议零售商，希望鼓励他们寻求照明更节能的方法。¹帮助提高效率的过程中，电力电子控制，新的照明技术来提供更大的选择光源提供更低的电力需求和颜色和输出水平更大的控制。

　　例如，调光支持变得很重要。商店现在被划分为光区，使人们能够在靠近窗户的地方收获自然采光，并根据室外的天气条件将能源消耗降到最低限度。此外，对灯光颜色的精心控制可以产生更吸引人的显示屏，节省大量的能源。例如，一项由伦斯勒理工学院的研究人员发现，彩色的灯光–本例主要蓝色LED–随着提供功率减少了30%的购物者比明亮，无色照明中比较好的一种主观印象的使用。²研究表明颜色对比度比整体照明水平更重要。

　　The demand forhigh-brightness lighting in the retail environment has led to the widespreaduse of halogen lighting in many publicareas. Traditional retail lighting uses halogen lampsrated at 150 W to illuminate items for sale in stores. Today， the same amount of lumen outputcanbeachieved using HID lighting elements that consume a third of that power. Traditionally， HID lamps have been used mainly for high-bay installations where high area coverage is needed but the lighting technology is moving into track-lighting fixtures suitable for the office and retail environment. This trend has been helped by the adoption of HID lighting in the automotive market， wheresimilar-sized bulbs are employed.

　　Metal-halide sources are available that produce 2500 lumens from a 30 W power input， making it possible to build intense spotlights that can be used for impressive window displays in the retail environment. However， these lamps demandintelligent electronics to maintain control and deal with some potential drawbacks. Without electronic control， HID lamps can take a long time to start up and cannot be restarted for as long as 20 minutes after power has been withdrawn （Figure 1）。