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护眼灯选什么牌子?菲宝告诉你,认准这几个关键指标

发布日期:2018-06-06 14:25:10编辑:chen

“护眼灯”近年来成为一个越来越热的词,市面上大大小小的台灯品牌,也纷纷把“护眼灯”三个字敲入了他们的宣传语中,然而到目前为止,国家并没有出台针对“护眼灯”的统一标准。2015年底,质检总局组织开展了“护眼灯”质量安全风险检测,结果显示,超9成样品达不到检测的要求。需要注意的是,此次检测,质检总局依据的主要是国内外读写作业台灯和有关照明标准要求,也就是说,这些标榜“护眼”、“无频闪”的所谓“护眼灯”,连台灯的基本要求都达不到,更不要说“护眼”了。

然而即便是这样的情况,家长对孩子视力的重视是与日俱增的,市场对“护眼灯”的需求也是客观存在的。那在“国标”暂时缺位的现在,家长们应该怎么去伪存真,挑选真正具有良好光学性能的灯具呢?

为了节能环保,保护环境,LED灯已逐渐成为市面灯具主流,因此在此不再赘述关于LED灯、卤素灯及白炽灯等的优缺点比较。我们知道,LED灯具是从2014年9月1日起正式被纳入国家强制性认证范围,但是需要注意的是3C认证并不是质量标志,而只是一种最基础的安全认证,国家目前为止并没有对“护眼灯”的性能有一套完整的规范说明,当然,从存在于建筑行业的《建筑照明设计标准》、《灯和灯系统的光生物安全性》、《读写作业台灯性能要求》以及属于自愿性认证的《台灯认证规范》当中,也不难找到一些国家对具有良好光学性能的灯具应达到的指标。

首先是照度,通俗的理解就是有多少光照射到作业面上。其次是照度均匀度,指规定表面上的最小照度与平均照度之比,光线分布越均匀说明照度越好。《台灯认证规范》明确了达到A级或AA级水平的照度及照度均匀度要求:以灯具出光口的几何中心的垂直投影点为圆心,位于眼睛的正前方,靠近眼睛一侧的投射范围内,离圆心的半径距离为300mm的三分之一扇形以内,AA级照度应大于500lx,A级照度应大于250lx;离圆心的半径距离为500mm的三分之一扇形被前面的扇形截下的区域以内,AA级照度应大于300lx,A级照度应大于 150lx。每个区域内的照度均匀度(最大值/最小值)不得大于3。

然后是色温,它反映的是颜色的温度。根据LED的发光原理,LED照明产品不可避免存在蓝光的成分,含量过高会对眼睛造成严重的“蓝光危害”,《建筑照明设计标准》和《台灯认证规范》都明确了LED产品色温不应高于4000K。再就是显色指数,《建筑照明设计标准》和《台灯认证规范》都明确要求显色指数Ra不应低于80,关于显指还有一个指标R9,美国能源之星的光源认证要求LED光源R9不能小于0,然而最新的权威研究证实仅看R9数值并不一定靠谱,更不是R9数值越大越好。至于频闪,《台灯认证规范》指出,光输出波形频率应大于3125Hz。最后是遮光性,如果灯具产品的遮光性不佳,会导致产生眩光效应,《台灯认证规范》明确了针对LED产品,在指定条件下应看不到2000cd/m2以上的光源及反射器内壁或透光结构。

所以,对于“护眼灯”来说,照度足且均匀,无频闪、无眩光、无辐射、高显指几方面的性能,以及杜绝“蓝光危害”,色温不超过4000K这些指标一个都不能少。而作为普通的消费者,在没有专业的检测仪器,也不具备足够的相关知识经验的情况下,该怎么判断自己选择的护眼灯是否合格呢?一个比较简单的办法是查认证,事实上,国际国内有不少机构是可以提供检测服务的,下面我们就给大家简单介绍一下这些认证。

1 IEEE防频闪认证

电气和电子工程师协会(即 IEEE)是一个国际性的电子技术与信息科学工程师的协会。IEEE于2013年4月发布IEEEPAR1789:2013《Draft Risk Assessment-Potential health effects of flicker from LED lighting》,给出了波动深度及频闪指数的“不可察觉”及“低风险”限制,并定义了波动深度和频闪指数。

2 IEC/EN 62471 光生物安全性认证

IEC/EN 62471 的目的是为了评估与不同灯和灯系统相关的光辐射危害, 并全面取代 IEC/EN60825 标准中关于LED 产品能量等级的要求,增加了光生物方面的要求,包括辐射强度,辐射亮度等,并根据测试数据对产品进行危害分级,包括豁免级,低危害,中等危害,高危害级别。

3 IEC/TR 62778:2014蓝光危害认证

IEC/TR 62778:2014的目的是应用IEC 62471对LED光源和灯具的蓝光危害进行评价。IEC 62471是一个综合性的平行标准,描述了所有潜在的健康危害,从光谱的紫外、可见光和红外波段。IEC/TR 62778:2014是一个仅针对IEC 62471:2006标准的第4.3.3条和第4.3.4条所描述的视网膜蓝光危害的技术报告。

 4 欧盟标准委员会CEN-EMF电磁辐射认证

欧洲标准化委员会(即CEN)宗旨在于促进成员国之间的标准化协作,制定本地区需要的欧洲标准(EN,除电工行业以外)和协调文件(HD)。欧盟出台相关措施对电磁场(EMF)的限值和测量方法进行规定,旨在保护暴露在电磁场中的人体头部和躯干的中枢神经系统组织,减少其对人体造成的不良影响。

5 RoHS环保认证

RoHS是由欧盟立法制定的一项强制性标准,该标准的目的在于消除电器电子产品中的铅、汞、镉、六价铬、多溴联苯和多溴二苯醚共6项物质,并重点规定了铅的含量不能超过0.1%,主要用于规范电子电气产品的材料及工艺标准,使之更加有利于人体健康及环境保护。

6 CQC认证

CQC标志认证是中国质量认证中心开展的自愿性产品认证业务之一,以加施CQC标志的方式表明产品符合相关的质量、安全、性能、电磁兼容等认证要求,认证范围涉及机械设备、电力设备、电器、电子产品、纺织品、建材等500多种产品。CQC标志认证重点关注安全、电磁兼容、性能、有害物质限量(RoHS)等直接反映产品质量和影响消费者人身和财产安全的指标,旨在维护消费者利益,促进提高产品质量,增强国内企业的国际竞争力。 

以上几项是针对LED灯具的各项“护眼”指标的专项认证,也可以说是“质量认证”,另外世界各国也各自有一些关于产品在本国流通需达到相关标准的准入门槛性认证,也可以说是“安全认证”,如中国的3C认证,欧盟CE认证,美国FCC认证,日本PSE认证等等。

当然,也有虽不是地区准入强制性认证,但是在国际上具有一定权威的认证,如ul认证、VDE认证、能源之星认证。

一般来说,台灯各项指标相关的认证越多即质量越有保障,而准入性门槛认证的差异,则反映的是该公司的国际目标市场战略的不同。回归到主题,目前市面上打着“护眼”概念的各大品牌台灯,他们的认证又是怎样的呢?

我们搜索网上主要的电商平台,结合销量、价格及台灯相关指数等因素选取了几个品牌进行统计,发现:

平均价位在500元左右,累计销量数千件(数据来源于京东)的孩视宝、松下等品牌护眼灯,官方宣布只有 CQC认证一项认证;飞利浦品牌护眼灯有国家3C认证、欧盟光生物安全认证EN62471,CEN-EMF电磁辐射认证、CQC认证等4项认证。平均价位在1500元左右,累计销量数千件的爱德华医生护眼灯有3C认证,CQC认证,欧盟光生物安全认证EN62471等3项认证;明基护眼灯通过了国家3C认证,欧盟CE认证,美国FCC认证,北美ETL认证,韩国KC认证,台湾地区BSMI 认证以及欧盟光生物安全EN62471等8项认证;而Fitkid菲宝智能护眼灯则通过了IEC蓝光认证、IEC生物危害认证、IEEE频闪认证、CEN-EMF电磁辐射认证、欧盟RoHS环保认证、欧盟CE安全认证、美国FCC安全认证、中国大陆3C质量认证、中国香港HUKST灯珠质量认证、中国香港HUKST整灯质量认证等10项认证,可以说是目前为止认证最为齐全的一款产品。

我们看看百度百科对LED灯的使用建议:从安全角度看,产品应符合相关的国际、国家标准。由于LED是新产品,中国国家标准滞后,仅提供产品合格测试。所以国际安全认证(如GS、CE、UL等)才是衡量LED灯品质的标准,同时拥有国际安全认证和国家产品质量合格证的厂家并不多,采购时需要仔细鉴别证书真伪。有国际安全认证的产品,价格一般较高。

所以,各位知道怎么挑选护眼灯了吗?

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