CN209710380U - A kind of LED light - Google Patents

Abstract

The utility model provides a kind of LED light, including integrated transporting discharging, triode, switch, resistance, capacitor, diode and LED.The LED light constitutes the impulse wave generator of a duty ratio gradual change by integrated transporting discharging, and when turning on light, oscillator generates the impulse wave that duty ratio gradually rises, and drives LED after triode power amplification, keeps the lamplight brightness of LED light cumulative.This LED light is used as bedside lamp, when avoidable sleeping at night is turned on light, the mutation of light brings stimulation to human eye, improves the comfort level of human eye.

Description

A kind of LED light

Technical field

The utility model relates to a kind of gradually bright Novel LED lights of light when turn on light, and belong to electronic technology field.

Background technique

It gets up when night, opens that moment of headlamp, unexpected light brings intense stimulus to human eye, feels that human eye not It is suitable.Utility model patent " a kind of light controller (patent No. 2015208375373) to brighten step by step " describes a kind of device, should Device realizes lamp and brightens step by step function, but the device only makes light in two-stage brightness change when turning on light, and brightness is still dashed forward Become, therefore, effect is not good enough.

Utility model content

The utility model provides a kind of LED light, and when turning on light, lamplight brightness is continuously cumulative, avoid unexpected strong light to Human eye brings stimulation, improves the comfort level of human eye.

The specific technical solution that the utility model is taken is as follows:

A kind of LED light, the LED light include integrated transporting discharging U1, triode Q1, Light-emitting diode LED 1, diode D1 and D2, Capacitor C1~C3, resistance R1~R8 and switch K1, wherein a termination+5V of switch K1, one end of another terminating resistor R1 integrate The positive supply feeder ear of amplifier U1 and the anode of Light-emitting diode LED 1；One end of another terminating resistor R2 of resistance R1, resistance One end of R3 and the anode of capacitor C3, the other end of resistance R2 and the cathode ground connection of capacitor C3；The negative supply of integrated transporting discharging U1 supplies Electric end ground connection, the other end of normal phase input end connecting resistance R3 and one end of resistance R4, export the other end, the resistance of terminating resistor R4 One end of R7, the anode of diode D1 and diode D2 cathode, anti-phase input terminates one end of one end of capacitor C1, resistance R5 It is grounded with the other end of one end of resistance R6, capacitor C1, the cathode of another termination capacitor C2 of resistance R5, the anode of capacitor C2 connects The cathode of diode D1, the anode of another terminating diode D2 of resistance R6；The other end of the base stage connecting resistance R7 of triode Q1, Emitter ground connection, one end of collector connecting resistance R8, the cathode of the other end sending and receiving optical diode LED1 of resistance R8；Light-emitting diodes Pipe LED1 uses illuminating LED.

The utility model has the following beneficial effects: the utility model provides a kind of LED light, when turning on light, lamplight brightness connects Continue cumulative.This LED light is used as bedside lamp, when can avoid sleeping at night, unexpected strong light brings stimulation to human eye, improves people The comfort level of eye.

Detailed description of the invention

Fig. 1 is the circuit diagram of the utility model.

Specific embodiment

1 pair of the utility model is described further with reference to the accompanying drawing.

A kind of LED light, the LED light include integrated transporting discharging U1, triode Q1, Light-emitting diode LED 1, diode D1 and D2, Capacitor C1~C3, resistance R1~R8 and switch K1, wherein a termination+5V of switch K1, one end of another terminating resistor R1 integrate The positive supply feeder ear of amplifier U1 and the anode of Light-emitting diode LED 1；One end of another terminating resistor R2 of resistance R1, resistance One end of R3 and the anode of capacitor C3, the other end of resistance R2 and the cathode ground connection of capacitor C3；The negative supply of integrated transporting discharging U1 supplies Electric end ground connection, the other end of normal phase input end connecting resistance R3 and one end of resistance R4, export the other end, the resistance of terminating resistor R4 One end of R7, the anode of diode D1 and diode D2 cathode, anti-phase input terminates one end of one end of capacitor C1, resistance R5 It is grounded with the other end of one end of resistance R6, capacitor C1, the cathode of another termination capacitor C2 of resistance R5, the anode of capacitor C2 connects The cathode of diode D1, the anode of another terminating diode D2 of resistance R6；The other end of the base stage connecting resistance R7 of triode Q1, Emitter ground connection, one end of collector connecting resistance R8, the cathode of the other end sending and receiving optical diode LED1 of resistance R8；Light-emitting diodes Pipe LED1 uses illuminating LED.

Integrated transporting discharging U1 and its peripheral cell constitute an impulse wave generator, wherein resistance R1 and resistance R2 series connection point Pressure, provides 2.5V reference voltage, and the impulse wave generator for forming amplifier U1 can starting of oscillation under single supply；Resistance R3 and R4 are provided Instant voltage positive feedback；It is negative anti-that resistance R5, resistance R6, diode D1, diode D2, capacitor C2 and capacitor C1 provide lagging voltage Feedback, when amplifier U1 exports high level, high level charges to capacitor C1 through diode D1, capacitor C2 and resistance R5, and works as amplifier When U1 exports low level, capacitor C1 discharges to low level through resistance R6 and diode D2；Triode Q1 is exported pulse by amplifier U1 Wave driving, when impulse wave is low level, triode Q1 cut-off, Light-emitting diode LED 1 is gone out, when impulse wave is high level, three Pole pipe Q1 saturation conduction, Light-emitting diode LED 1 is bright, but since the frequency of impulse wave is higher, human eye just feels light emitting diode LED1 continuous luminous, if the duty ratio of impulse wave is small, it is weak that human eye feels that Light-emitting diode LED 1 shines, if the duty ratio of impulse wave Greatly, then feel 1 strong light of Light-emitting diode LED.

When power switch K1 is just switched on, since capacitor C2 is without energy storage, and its capacity is much larger than the capacity of capacitor C1, works as amplifier When U1 output high level charges to capacitor C1 through diode D1, capacitor C2 and resistance R5, capacitor C2 is equivalent to short circuit, to charging Speed influences very little, and charge constant is about R5C1, when capacitor C1 through resistance R6 and diode D2 amplifier U1 is exported it is low When level discharges, discharge time constant is about R6C1, because of the resistance value of 5 times of resistance R5 of resistance value of resistance R6, discharge time constant The duty ratio of R6C1 also 5 times of charge constant R5C1, the impulse wave of pulse oscillator output are small, and Light-emitting diode LED 1 is sent out Light, but brightness is lower.With time retardation, capacitor C1 constantly charge and discharge, and every time to the charging current of capacitor C1, all flow through Capacitor C2, so that capacitor C2 both end voltage gradually rises, and the gradually rising of capacitor C2 both end voltage, it will lead to the charging to capacitor C1 Electric current gradually declines, and pulse oscillator output impulse wave duty ratio gradually rises, and it is cumulative strong that human eye feels that Light-emitting diode LED 1 shines. After several seconds, capacitor C2 tends to be fully charged, when amplifier U1 exports high level, tends to 0 to the charging current of capacitor C1, amplifier U1 is defeated The duty ratio of impulse wave tends to 1 out, and it is in most bright state that Light-emitting diode LED 1, which shines,.

Claims (1)

1. a kind of LED light, it is characterized in that: the LED light includes integrated transporting discharging U1, triode Q1, Light-emitting diode LED 1, diode D1 and D2, capacitor C1~C3, resistance R1~R8 and switch K1, wherein a termination+5V of switch K1, the one of another terminating resistor R1 It holds, the anode of the positive supply feeder ear of integrated transporting discharging U1 and Light-emitting diode LED 1；The one of another terminating resistor R2 of resistance R1 The anode at end, one end of resistance R3 and capacitor C3, the other end of resistance R2 and the cathode ground connection of capacitor C3；Integrated transporting discharging U1's is negative Power supply side ground connection, the other end of normal phase input end connecting resistance R3 and one end of resistance R4, output terminating resistor R4's is another End, one end of resistance R7, the anode of diode D1 and diode D2 cathode, anti-phase input terminates one end of capacitor C1, resistance One end of R5 and one end of resistance R6, the other end ground connection of capacitor C1, the cathode of another termination capacitor C2 of resistance R5, capacitor C2 Anode connect the cathode of diode D1, the anode of another terminating diode D2 of resistance R6；The base stage connecting resistance R7 of triode Q1 The other end, emitter ground connection, one end of collector connecting resistance R8, the other end sending and receiving optical diode LED1's of resistance R8 is negative Pole；Light-emitting diode LED 1 uses illuminating LED.