CN205040069U

CN205040069U - Timing LED table lamp with an automatic light meter

Info

Publication number: CN205040069U
Application number: CN201520773410.XU
Authority: CN
Inventors: 陈浩明
Original assignee: Meizhou Jinming Lighting Co Ltd
Current assignee: Meizhou Jinming Lighting Co Ltd
Priority date: 2015-10-08
Filing date: 2015-10-08
Publication date: 2016-02-17
Anticipated expiration: 2025-10-08

Abstract

The utility model discloses a timing LED table lamp with an automatic light meter, including potentiometre RP1, electrode slice A, electric capacity C4 and chip IC1, potentiometre RP1's slip end, LED lamps and lanterns H, double base diode V3's second base, power VCC, chip IC1's pin 4 and chip IC1's pin 8, another stiff end connection electric capacity C1 of potentiometre RP1, chip IC1's pin 6 and chip IC1's pin 7 are connected to stiff end of potentiometre RP1. The utility model discloses timing LED table lamp with an automatic light meter uses phototriode as the detecting light intensity component, can be automatically according to the luminance of environment light intensity adjusting station lamp to abandon traditional key switch, used the control of touch mode, still had regularly function simultaneously, consequently had the manifold advantage of simple structure, convenient to use and function.

Description

A kind of timing automatic dimming LED (Light Emitting Diode) desk lamp

Technical field

The utility model relates to field of LED illumination, specifically a kind of timing automatic dimming LED (Light Emitting Diode) desk lamp.

Background technology

Usually, be all use desk lamp to provide illumination when people work or learn evening, so not only oneself can work and study, but also can not be affected other people.Just because of it provides very big convenience to people, so, nowadays desk lamp comes into huge numbers of families, become life essential product, but current desk lamp brightness can only rely on people's manual operation to regulate, and a lot of teenager is easy to ignore the impact of light on eyesight when learning, thus cause hypometropia.

Utility model content

The purpose of this utility model is the timing automatic dimming LED (Light Emitting Diode) desk lamp providing a kind of structure simple, easy to use, to solve the problem proposed in above-mentioned background technology.

For achieving the above object, the utility model provides following technical scheme:

A kind of timing automatic dimming LED (Light Emitting Diode) desk lamp, comprises potentiometer RP1, electrode slice A, electric capacity C4 and chip IC 1, a stiff end of described potentiometer RP1 connects the sliding end of potentiometer RP1, LED lamp H, second base stage of double base diode V3, power supply VCC, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, another stiff end of potentiometer RP1 connects electric capacity C1, the pin 6 of chip IC 1 and the pin 7 of chip IC 1, the pin 2 of chip IC 1 connects electric capacity C4, and the other end of the other end connecting electrode sheet A of electric capacity C4, electric capacity C1 connects electric capacity C2, electric capacity C3, resistance R2, a stiff end of potentiometer RP2, the sliding end of potentiometer RP2, switch S 1, the negative electrode of unidirectional thyristor Q1 and the pin 1 of chip IC 1, the pin 3 contact resistance R1 of chip IC 1 and the collector electrode of triode V1, the emitter of triode V1 connects another stiff end of potentiometer RP2 and the base stage of triode V2, the collector electrode of triode V2 connects the other end of electric capacity C3 and the emitter of double base diode V3, the other end of the first base stage contact resistance R2 of double base diode V3 and the control pole of unidirectional thyristor Q1, the other end of anode connecting valve S1 of unidirectional thyristor Q1 and the other end of LED lamp H, the model of described chip IC 1 is NE555.

As preferred version of the present utility model: described triode V1 is phototriode.

Compared with prior art, the beneficial effects of the utility model are: the utility model timing automatic dimming LED (Light Emitting Diode) desk lamp uses phototriode as light-intensity test element, can environmentally light intensity regulating desk lamp brightness automatically, and abandon traditional key switch, use touch manner controls, also there is timing function simultaneously, therefore there is the advantage of simple, the easy to use and diverse in function of structure.

Accompanying drawing explanation

Fig. 1 is the circuit diagram of timing automatic dimming LED (Light Emitting Diode) desk lamp.

Embodiment

Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.

Refer to Fig. 1, a kind of timing automatic dimming LED (Light Emitting Diode) desk lamp, comprises potentiometer RP1, electrode slice A, electric capacity C4 and chip IC 1, a stiff end of described potentiometer RP1 connects the sliding end of potentiometer RP1, LED lamp H, second base stage of double base diode V3, power supply VCC, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, another stiff end of potentiometer RP1 connects electric capacity C1, the pin 6 of chip IC 1 and the pin 7 of chip IC 1, the pin 2 of chip IC 1 connects electric capacity C4, and the other end of the other end connecting electrode sheet A of electric capacity C4, electric capacity C1 connects electric capacity C2, electric capacity C3, resistance R2, a stiff end of potentiometer RP2, the sliding end of potentiometer RP2, switch S 1, the negative electrode of unidirectional thyristor Q1 and the pin 1 of chip IC 1, the pin 3 contact resistance R1 of chip IC 1 and the collector electrode of triode V1, the emitter of triode V1 connects another stiff end of potentiometer RP2 and the base stage of triode V2, the collector electrode of triode V2 connects the other end of electric capacity C3 and the emitter of double base diode V3, the other end of the first base stage contact resistance R2 of double base diode V3 and the control pole of unidirectional thyristor Q1, the other end of anode connecting valve S1 of unidirectional thyristor Q1 and the other end of LED lamp H, the model of described chip IC 1 is NE555.

Triode V1 is phototriode.

Operation principle of the present utility model is: chip IC 1 and peripheral cell thereof form monostable circuit, and timing is set by potentiometer RP1 and electric capacity C1.When RP1 is minimum value, timing is about 20min; When RP1 is maximum, timing is about 60min.Chip IC 1 also doubles as the use touching turn on lights.Electrode slice A is connected on the 2nd pin of chip IC 1 by electric capacity C4, when there being people's Touching electrode A, is equivalent to defeated people undersuing.Q end exports high level, and V1 and RP2 dividing potential drop makes V2 conducting, and collector current charges to electric capacity C3, and when making V3 conducting, the control pole of unidirectional thyristor Q1 is triggered, and LED group H is lit.When dim, the ce electrode resistance of V1 becomes large, and now the base potential of V2 reduces, the be of V2 increases, and V2 collector current increases, and C3 charges quickening, trigger impulse moves forward, LED group H both end voltage increases, then brightness increases, and vice versa, thus reach the object of intelligent dimming, if need to use desk lamp to open for a long time, short circuit unidirectional thyristor Q1 can be carried out by Closing Switch S1, thus keep desk lamp to open work for a long time.

Claims

1. a timing automatic dimming LED (Light Emitting Diode) desk lamp, comprises potentiometer RP1, electrode slice A, electric capacity C4 and chip IC 1, is characterized in that, a stiff end of described potentiometer RP1 connects the sliding end of potentiometer RP1, LED lamp H, second base stage of double base diode V3, power supply VCC, the pin 4 of chip IC 1 and the pin 8 of chip IC 1, another stiff end of potentiometer RP1 connects electric capacity C1, the pin 6 of chip IC 1 and the pin 7 of chip IC 1, the pin 2 of chip IC 1 connects electric capacity C4, and the other end of the other end connecting electrode sheet A of electric capacity C4, electric capacity C1 connects electric capacity C2, electric capacity C3, resistance R2, a stiff end of potentiometer RP2, the sliding end of potentiometer RP2, switch S 1, the negative electrode of unidirectional thyristor Q1 and the pin 1 of chip IC 1, the pin 3 contact resistance R1 of chip IC 1 and the collector electrode of triode V1, the emitter of triode V1 connects another stiff end of potentiometer RP2 and the base stage of triode V2, the collector electrode of triode V2 connects the other end of electric capacity C3 and the emitter of double base diode V3, the other end of the first base stage contact resistance R2 of double base diode V3 and the control pole of unidirectional thyristor Q1, the other end of anode connecting valve S1 of unidirectional thyristor Q1 and the other end of LED lamp H, the model of described chip IC 1 is NE555.

2. a kind of timing automatic dimming LED (Light Emitting Diode) desk lamp according to claim 1, it is characterized in that, described triode V1 is phototriode.