Backlight button, capable of automatically adjusting brightness according to ambient light intensity change, of switch/socket panel
A socket panel, automatic adjustment technology, applied in the direction of electroluminescence light source, light source, electric light source, etc., can solve the problems of affecting sleep, bright backlight brightness, etc., to avoid affecting sleep, to meet dual needs, and to be easy to use.
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Embodiment 1
[0017] A switch panel backlight button that can automatically adjust brightness according to changes in ambient light intensity, such as figure 1 As shown, it includes a touch button 2 arranged on the switch panel 1, and the touch button 2 is provided with a backlight control circuit. Such as image 3 As shown, the backlight control circuit includes a backlight, a triode, a photosensitive sensor and a power supply. The backlight adopts an LED lamp D1, the photosensitive sensor adopts a photoresistor D2, and the power supply is a 3.3V direct current converted from a 220V alternating current through a power conversion module. Power supply (the power conversion process is a prior art, and will not be repeated here). The anode of the LED lamp D1 is connected to the 3.3V DC power supply through the first resistor R3, and its cathode is grounded; at the same time, the anode of the LED lamp D1 is also connected to the collector of the triode Q1 through the current limiting resistor ...
Embodiment 2
[0019] A backlight button on the socket panel that can automatically adjust the brightness according to the change of ambient light intensity, such as figure 2 As shown, it includes a touch button 2 and a socket 4 arranged on the socket panel 3 , and a backlight control circuit is arranged inside the touch button 2 . The specific structure of the backlight control circuit is the same as that in Embodiment 1, and will not be repeated here.
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