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在眼耳鼻喉科临床工作中,额镜是不可缺少的检查或治疗工具,伹目前使用的额镜需要固定的光源或电源,依靠凹镜的反光观察,必须将镜片调到一定位置,检查者才能看清被检部位。使用时常常受到环境和条件的限制,初学者也不易掌握。笔者通过实践,设计制作一种交直流电聚光头灯(见附图),即在万向关节上接一根“L”形金属管,金属管远端装一普通小灯泡,附加一个调节焦距的聚光筒,电线自金属管内通过与灯泡接触,根据需要,灯泡可以随时变换。用直流电时,以0.3 A、3.8V的普通小灯泡作光源,3节1.5V的干电池作电源,将插头接上电池盒即可;用交流电时,以0.3 A,6.3V的普通小灯泡作光源,将插头与变压器输出线接头相接,适当调节灯光即可进行检查。其反光焦点之光斑直径在25～40cm、距离间为2 cm。通过临床应用,认为这种聚光头灯结
In the ENT clinical work, the frontal mirror is an indispensable examination or treatment tool, 伹 the current use of the frontal mirror requires a fixed light source or power supply, depending on the concave mirror of the reflective observation, the lens must be transferred to a certain position, the examiner To be able to see the seized parts. Often used by the environment and conditions, beginners are not easy to grasp. Through practice, the author designs and manufactures a kind of AC-DC spotlight (see the attached drawing), which is connected with a “L” shaped metal tube at the universal joint. The distal end of the metal tube is equipped with an ordinary small light bulb, Condenser tube, wire from the metal tube through contact with the bulb, according to the need, the bulb can be changed at any time. With DC, 0.3 A, 3.8V common small light bulb as a light source, 3 1.5V dry batteries for power supply, the plug can be connected to the battery box; with AC, to 0.3 A, 6.3V ordinary light bulb for Light source, the plug and transformer output line connector phase, the appropriate light can be checked. The focal spot of its reflective spot diameter 25 ~ 40cm, the distance between 2 cm. Through clinical application, this spotlight head knot is considered