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A型灯泡

常见的普通梨形灯泡
(重定向自A系灯泡
一颗A型灯泡

A型灯泡英语:A-series light bulb),指的是一种“经典”的梨形电灯泡,大多配有爱迪生螺口底座。自20世纪早期起,此类灯泡一直是最常见的日常电灯。A型灯泡的型号后面的数字表示其最宽处直径,在北美按18英寸(3.2毫米)为一单位计算,[1][2]在欧洲、印度则以毫米计。[3][4][5]

目录

形状编辑

最常用的A型灯泡是A19灯泡,[2]其最宽处直径为198英寸(60毫米),因此在公制单位中也叫做A60灯泡。[4]一般的A19灯泡长4 38英寸(11厘米)。

按照美国ANSI C79.1-2002、印度IS 14897:2000[3]、日本JIS C 7710:1988[6]定义,A型灯泡符合“由一个末端的球形和一段曲面相切连接到灯泡颈部”形成的形状,其中曲面本身的曲率半径指向灯泡外部,且大于灯泡末端球的半径。美国能源之星认证对于节能万向灯泡的要求则仅有“符合相应ANSI形状的最大半径、最小长度、最长长度”一点。[7](14.1)

接口编辑

A型灯泡常配有约1英寸(25毫米)长的E26(直径26毫米,100–120V)或E27(直径27毫米,220–240V)螺口。在英国英联邦国家的老式灯具上也可见到使用B22拧口的A型灯泡。[8]

类型编辑

 
一颗A60(A19)规格、E27螺口的LED灯泡

历史上大部分A型灯泡都是白熾燈,但现在也有采用较新的电灯技术(如节能灯LED灯等)的版本,用以替代相应尺寸的白炽灯。[4][5]

轶闻编辑

据媒体报道,有网友曾发帖称“不能把灯泡放进嘴里”,结果引来好奇者尝试,果真把灯泡卡在口中、无法取出。[9]有糖果厂商受此启发,生产灯泡形状、大小的棒棒糖[10]

参考资料编辑

  1. ^ Lamp Size and Comparison Features [灯泡大小及特征对比] (PDF). WW Grainger Inc. (英语). A=Arbitrary [...] Lamp size (maximum lamp diameter) is expressed by a number representing eighths of an inch. 
  2. ^ 2.0 2.1 Light Bulb Reference Guide [灯泡参考指南]. Superior Lighting (英语). The letter indicates the shape of the bulb and the number relates to the diameter of the bulb in eighths of an inch. The most commonly used household bulb is the A-19. 
  3. ^ 3.0 3.1 IS 14897 (2000): Glass Bulb Designation System for Lamps - Guide (PDF). [21 March 2017]. A bulb shape having a spherical and [sic; end?] section that is joined to the neck by a radius [...] A60: An “A” shape bulb with a nominal major diameter of 60 mm. 
  4. ^ 4.0 4.1 4.2 Light Bulb Shapes and Sizes Explained [灯泡大小及尺寸详解]. LED University. EagleLight (英语). 'A' type bulb shapes are standard house hold light bulbs. The number after the bulb shape is the number of eighths of an inch in diameter. For non-imperial measured bulbs the number following the bulb shape is the number of centimeters [sic] at the widest point of the bulb. Standard bulb sizes include A19 for imperial measurements and A60 for a slightly smaller metric measured bulb. 
  5. ^ 5.0 5.1 LED Start GLS: 40, 60, 75 & 90w equivalents (PDF). 通用电气照明. 
  6. ^ JIS C 7710:1988 電球類ガラス管球の形式の表し方. [2017-03-21] (日语). 
  7. ^ ENERGY STAR Eligibility Criteria Version 2.0, Rev. Oct-2016 (PDF). [2017-03-21] (英语). Lamp shall comply with ANSI minimum overall length (min OAL), maximum overall length (MOL) and maximum lamp diameter values, where they exist 
  8. ^ Light fixtures and light bulb sizes [灯具及灯泡尺寸]. www.tuxgraphics.org. [2017-02-28] (英语). 
  9. ^ 网友发帖:不能把灯泡放进嘴里 试者"中招". 新华网. 钱江晚报. 2010-03-17 [2017-03-14]. 
  10. ^ 滿足你的好奇心《燈泡棒棒糖》把糖果放進嘴巴就沒問題了吧~. 宅宅新闻 (中文(台灣)‎). 

参见编辑

  • MR16:命名规则类似、带反射镜的灯泡规格