公开(公告)号：US20060250787A1

公开(公告)日：2006-11-09

申请号：US11418296

申请日：2006-05-05

Applicant: David Ho ,  Yi Xing

Inventor： David Ho ,  Yi Xing

IPC: F21L4/00 ,  F21L13/00

CPC classification number: F21L4/005 ,  F21V33/0052 ,  F21Y2115/10

Abstract: A pointer pen which is disclosed includes a rechargeable battery, a switch, a light-emitting element, and an interface unit including a voltage transforming and charging circuit and a USB connecter. The USB connector may be plugged into a USB port of a device (e.g., laptop computer) when the battery run down. Thereafter, an external power is supplied to the voltage transforming and charging circuit for voltage transformation through the connection between the USB connector and the USB port. The transformed voltage is then supplied to the battery for charging. The pointer pen has a prolonged operating time and is capable for being charged quickly in a convenient way when its battery runs down while a lecture is given.

Abstract translation: 公开的指针笔包括可再充电电池，开关，发光元件以及包括电压转换和充电电路和USB连接器的接口单元。 当电池电量耗尽时，USB连接器可能会插入设备（例如笔记本电脑）的USB端口。 此后，通过USB连接器和USB端口之间的连接，向变压充电电路提供外部电力进行电压转换。 然后将变换的电压提供给用于充电的电池。 指针笔具有延长的操作时间，并且当给出讲座时其电池电量下降时，能够以便利的方式快速充电。