Ultraviolet and LED based keyboard

Abstract

The present invention discloses an ultraviolet and LED based keyboard. The keyboard comprises a control module, a human body sensor, a light-sensitive sensor and light emitting modules one-to-one corresponding to keys on the keyboard. The light emitting modules are disposed on substrates of the keys. The light emitting modules each comprise an ultraviolet lamp, an LED dimmer, and an LED lamp. The ultraviolet lamps are connected with the control module, and the LED lamps are connected with the control module by the LED dimmers. Characters on key caps of the keys are all made of translucent plastic. LED lamps of the ultraviolet lamps all radiate towards the key caps. The control module is used to, according to the light intensity in an external environment of the keyboard, control the LED lamps to work and adjust the brightness of the LED lamps, and when a distance between the keyboard and a person is greater than a preset distance threshold, to control the ultraviolet lamps to perform sterilization. The ultraviolet and LED based keyboard provided by the present invention is simple in structure and convenient in use; enables the characters on the key caps to be clearly seen when light is insufficient in the evening; and can perform sterilization automatically.

Description

technical field [0001] The present invention relates to input devices, in particular to a keyboard based on ultraviolet light and LEDs. Background technique [0002] The keyboard is the most commonly used and most important input device. Through the keyboard, English letters, numbers, punctuation marks, etc. can be input into the computer, so as to issue commands and input data to the computer. The keyboard is composed of a group of key switches assembled together in an array. Every time a key is pressed, the corresponding switch circuit is connected, and the code for engraving the key is sent to the computer through the interface circuit. The overall classification can be divided into five categories: desktop keyboards, notebook computer keyboards, industrial computer keyboards, dual-control keyboards, and ultra-thin keyboards according to applications. [0003] The keyboard in the PCXT / AT era is mainly based on 83 keys, and it has lasted for a long time, but it has been e...

AI Technical Summary

Problems solved by technology

[0014] However, laser etching still does not solve the problem that the characters on the keycaps are difficult to read at night when the light is low

[0015] In addition, because the keyboard is not sealed, it is easy to breed bacteria, and the existing keyboards generally do not have a sterilization function.