CN204887564U - Eyeshield LED table lamp - Google Patents
Eyeshield LED table lamp Download PDFInfo
- Publication number
- CN204887564U CN204887564U CN201520522495.4U CN201520522495U CN204887564U CN 204887564 U CN204887564 U CN 204887564U CN 201520522495 U CN201520522495 U CN 201520522495U CN 204887564 U CN204887564 U CN 204887564U
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- resistance
- triode
- connects
- potentiometer
- electric capacity
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Abstract
The utility model discloses an eyeshield LED table lamp, including resistance R1, potentiometre RP1, chip IC1 and bidirectional thyristor Q1, potentiometre RP1's stiff end and triode V1's base is connected to resistance R1 one end connecting resistance R2, resistance R4, electric capacity C1, triode V1's projecting pole, double base diode V4's first base, potentiometre RP2's stiff end and chip IC1's pin 3, resistance R1's the other end. The utility model discloses eyeshield LED table lamp circuit structure is simple, components and parts are few, has increased light filling lamp and light -sensitive element on the basis of basic desk lamp, can automatic open the light filling lamp when meetting desk lamp luminance reduction, reaches the mesh of additional luminance to effectively protect user's eyesight, have consequently that the cost of manufacture is low, an advantage of convenient to use and stable performance.
Description
Technical field
The utility model relates to a kind of desk lamp, specifically a kind of eye-protection LED 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, the brightness running into the situation desk lamps such as under-voltage or fluorescent tube is aging can reduce, and causes damage to the eyesight of people, especially teenager is easy to ignore the impact of light on eyesight when learning, thus causes hypometropia.
Utility model content
The purpose of this utility model is the eye-protection LED 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 eye-protection LED desk lamp, comprise resistance R1, potentiometer RP1, chip IC 1 and bidirectional thyristor Q1, described resistance R1 one end contact resistance R2, resistance R4, electric capacity C1, the emitter of triode V1, first base stage of double base diode V4, a stiff end of potentiometer RP2 and the pin 3 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1 and the base stage of triode V1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, resistance R3, resistance R5, the other end of electric capacity C1, electric capacity C2, electric capacity C3, the negative electrode of diode D1, the emitter of triode V2 and the pin 2 of chip IC 1, the other end of the anode contact resistance R2 of diode D1, the other end of collector electrode contact resistance R3 of triode V1 and the base stage of triode V2, the collector electrode of triode V2 connects another stiff end of potentiometer RP2, the base stage of the sliding end connecting triode V3 of potentiometer PR2, the other end of the emitter contact resistance R4 of triode V3, the collector electrode of triode V3 connects the other end of electric capacity C3 and the emitter of double base diode V4, the other end of the second base stage contact resistance R5 of double base diode V4 and the control pole of bidirectional thyristor Q1, the pin 1 of chip IC 1 connects the other end and the power supply VCC of electric capacity C2, a main electrode of bidirectional thyristor Q1 connects LED group L1, the other end of LED group L1 connects power supply VCC and LED group L2, the other end of LED group L2 connects another main electrode of bidirectional thyristor Q1 and ground connection, the model of described chip IC 1 is LM7805.
As preferred version of the present utility model: described power supply VCC is 24V direct current.
As preferred version of the present utility model: resistance R1 is photo resistance.
Compared with prior art; the beneficial effects of the utility model are: the utility model eye-protection LED desk lamp circuit structure is simple, components and parts are few; the basis of basic desk lamp adds light compensating lamp and light-sensitive element; run into when desk lamp brightness reduces and automatically can open light compensating lamp; reach the object of supplementary brightness; thus the eyesight of available protecting user, therefore there is the advantage of low, the easy to use and stable performance of cost of manufacture.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of eye-protection LED 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 eye-protection LED desk lamp, comprise resistance R1, potentiometer RP1, chip IC 1 and bidirectional thyristor Q1, described resistance R1 one end contact resistance R2, resistance R4, electric capacity C1, the emitter of triode V1, first base stage of double base diode V4, a stiff end of potentiometer RP2 and the pin 3 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1 and the base stage of triode V1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, resistance R3, resistance R5, the other end of electric capacity C1, electric capacity C2, electric capacity C3, the negative electrode of diode D1, the emitter of triode V2 and the pin 2 of chip IC 1, the other end of the anode contact resistance R2 of diode D1, the other end of collector electrode contact resistance R3 of triode V1 and the base stage of triode V2, the collector electrode of triode V2 connects another stiff end of potentiometer RP2, the base stage of the sliding end connecting triode V3 of potentiometer PR2, the other end of the emitter contact resistance R4 of triode V3, the collector electrode of triode V3 connects the other end of electric capacity C3 and the emitter of double base diode V4, the other end of the second base stage contact resistance R5 of double base diode V4 and the control pole of bidirectional thyristor Q1, the pin 1 of chip IC 1 connects the other end and the power supply VCC of electric capacity C2, a main electrode of bidirectional thyristor Q1 connects LED group L1, the other end of LED group L1 connects power supply VCC and LED group L2, the other end of LED group L2 connects another main electrode of bidirectional thyristor Q1 and ground connection, the model of described chip IC 1 is LM7805.
Power supply VCC is 24V direct current.Resistance R1 is photo resistance.
Operation principle of the present utility model is: the LED group L1 in circuit is light compensating lamp, LED group L2 is illuminating lamp, after switching on power, L2 is lit, the power of light is controlled after photo resistance R1 and potentiometer RP1 dividing potential drop, triode V3 is charged to electric capacity C3 by its collector electrode, when the charging of electric capacity C3 reaches certain value, double base diode V5 emitter obtains electric, V5 conducting, thus trigger the control pole of bidirectional thyristor Q1, bidirectional thyristor Q1 conducting, light compensating lamp L1 lights, when dim, the collector electrode On current of triode V1 increases thereupon, triode V3 increases the charging current of electric capacity C1, the angle of flow of bidirectional thyristor Q1 is made to become large, the brightness of light compensating lamp L1 is along with increase, otherwise, during light grow, the brightness of light compensating lamp L1 reduces.Thus reach Intelligent supplemental lighting, the object of vision protection.
Claims (3)
1. an eye-protection LED desk lamp, comprise resistance R1, potentiometer RP1, chip IC 1 and bidirectional thyristor Q1, it is characterized in that, described resistance R1 one end contact resistance R2, resistance R4, electric capacity C1, the emitter of triode V1, first base stage of double base diode V4, a stiff end of potentiometer RP2 and the pin 3 of chip IC 1, the other end of resistance R1 connects a stiff end of potentiometer RP1 and the base stage of triode V1, another stiff end of potentiometer RP1 connects the sliding end of potentiometer RP1, resistance R3, resistance R5, the other end of electric capacity C1, electric capacity C2, electric capacity C3, the negative electrode of diode D1, the emitter of triode V2 and the pin 2 of chip IC 1, the other end of the anode contact resistance R2 of diode D1, the other end of collector electrode contact resistance R3 of triode V1 and the base stage of triode V2, the collector electrode of triode V2 connects another stiff end of potentiometer RP2, the base stage of the sliding end connecting triode V3 of potentiometer PR2, the other end of the emitter contact resistance R4 of triode V3, the collector electrode of triode V3 connects the other end of electric capacity C3 and the emitter of double base diode V4, the other end of the second base stage contact resistance R5 of double base diode V4 and the control pole of bidirectional thyristor Q1, the pin 1 of chip IC 1 connects the other end and the power supply VCC of electric capacity C2, a main electrode of bidirectional thyristor Q1 connects LED group L1, the other end of LED group L1 connects power supply VCC and LED group L2, the other end of LED group L2 connects another main electrode of bidirectional thyristor Q1 and ground connection, the model of described chip IC 1 is LM7805.
2. a kind of eye-protection LED desk lamp according to claim 1, is characterized in that, described power supply VCC is 24V direct current.
3. a kind of eye-protection LED desk lamp according to claim 1, is characterized in that, described resistance R1 is photo resistance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522495.4U CN204887564U (en) | 2015-07-17 | 2015-07-17 | Eyeshield LED table lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520522495.4U CN204887564U (en) | 2015-07-17 | 2015-07-17 | Eyeshield LED table lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204887564U true CN204887564U (en) | 2015-12-16 |
Family
ID=54831881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520522495.4U Expired - Fee Related CN204887564U (en) | 2015-07-17 | 2015-07-17 | Eyeshield LED table lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204887564U (en) |
-
2015
- 2015-07-17 CN CN201520522495.4U patent/CN204887564U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20160717 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |